zlib-1.2.11.dfsg/0000755000175000017500000000000013162250451013331 5ustar brooniebrooniezlib-1.2.11.dfsg/crc32.h0000644000175000017500000007354211747346064014446 0ustar brooniebroonie/* crc32.h -- tables for rapid CRC calculation * Generated automatically by crc32.c */ local const z_crc_t FAR crc_table[TBLS][256] = { { 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL, 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL, 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL, 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL, 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL, 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL, 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL, 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL, 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL, 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL, 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL, 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL, 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL, 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL, 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL, 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL, 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL, 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL, 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL, 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL, 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL, 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL, 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL, 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL, 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL, 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL, 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL, 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL, 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL, 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL, 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL, 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL, 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL, 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL, 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL, 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL, 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL, 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL, 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL, 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL, 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL, 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL, 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL, 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL, 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL, 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL, 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL, 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL, 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL, 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, 0x2d02ef8dUL #ifdef BYFOUR }, { 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL, 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL, 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL, 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL, 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL, 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL, 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL, 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL, 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL, 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL, 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL, 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL, 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL, 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL, 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL, 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL, 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL, 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL, 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL, 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL, 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL, 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL, 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL, 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL, 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL, 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL, 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL, 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL, 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL, 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL, 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL, 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL, 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL, 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL, 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL, 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL, 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL, 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL, 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL, 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL, 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL, 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL, 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL, 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL, 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL, 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL, 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL, 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL, 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL, 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL, 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL, 0x9324fd72UL }, { 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL, 0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL, 0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL, 0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL, 0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL, 0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL, 0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL, 0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL, 0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL, 0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL, 0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL, 0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL, 0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL, 0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL, 0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL, 0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL, 0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL, 0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL, 0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL, 0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL, 0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL, 0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL, 0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL, 0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL, 0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL, 0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL, 0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL, 0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL, 0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL, 0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL, 0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL, 0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL, 0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL, 0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL, 0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL, 0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL, 0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL, 0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL, 0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL, 0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL, 0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL, 0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL, 0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL, 0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL, 0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL, 0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL, 0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL, 0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL, 0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL, 0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL, 0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL, 0xbe9834edUL }, { 0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL, 0x37def032UL, 0x256b5fdcUL, 0x9dd738b9UL, 0xc5b428efUL, 0x7d084f8aUL, 0x6fbde064UL, 0xd7018701UL, 0x4ad6bfb8UL, 0xf26ad8ddUL, 0xe0df7733UL, 0x58631056UL, 0x5019579fUL, 0xe8a530faUL, 0xfa109f14UL, 0x42acf871UL, 0xdf7bc0c8UL, 0x67c7a7adUL, 0x75720843UL, 0xcdce6f26UL, 0x95ad7f70UL, 0x2d111815UL, 0x3fa4b7fbUL, 0x8718d09eUL, 0x1acfe827UL, 0xa2738f42UL, 0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL, 0xb28700d0UL, 0x2f503869UL, 0x97ec5f0cUL, 0x8559f0e2UL, 0x3de59787UL, 0x658687d1UL, 0xdd3ae0b4UL, 0xcf8f4f5aUL, 0x7733283fUL, 0xeae41086UL, 0x525877e3UL, 0x40edd80dUL, 0xf851bf68UL, 0xf02bf8a1UL, 0x48979fc4UL, 0x5a22302aUL, 0xe29e574fUL, 0x7f496ff6UL, 0xc7f50893UL, 0xd540a77dUL, 0x6dfcc018UL, 0x359fd04eUL, 0x8d23b72bUL, 0x9f9618c5UL, 0x272a7fa0UL, 0xbafd4719UL, 0x0241207cUL, 0x10f48f92UL, 0xa848e8f7UL, 0x9b14583dUL, 0x23a83f58UL, 0x311d90b6UL, 0x89a1f7d3UL, 0x1476cf6aUL, 0xaccaa80fUL, 0xbe7f07e1UL, 0x06c36084UL, 0x5ea070d2UL, 0xe61c17b7UL, 0xf4a9b859UL, 0x4c15df3cUL, 0xd1c2e785UL, 0x697e80e0UL, 0x7bcb2f0eUL, 0xc377486bUL, 0xcb0d0fa2UL, 0x73b168c7UL, 0x6104c729UL, 0xd9b8a04cUL, 0x446f98f5UL, 0xfcd3ff90UL, 0xee66507eUL, 0x56da371bUL, 0x0eb9274dUL, 0xb6054028UL, 0xa4b0efc6UL, 0x1c0c88a3UL, 0x81dbb01aUL, 0x3967d77fUL, 0x2bd27891UL, 0x936e1ff4UL, 0x3b26f703UL, 0x839a9066UL, 0x912f3f88UL, 0x299358edUL, 0xb4446054UL, 0x0cf80731UL, 0x1e4da8dfUL, 0xa6f1cfbaUL, 0xfe92dfecUL, 0x462eb889UL, 0x549b1767UL, 0xec277002UL, 0x71f048bbUL, 0xc94c2fdeUL, 0xdbf98030UL, 0x6345e755UL, 0x6b3fa09cUL, 0xd383c7f9UL, 0xc1366817UL, 0x798a0f72UL, 0xe45d37cbUL, 0x5ce150aeUL, 0x4e54ff40UL, 0xf6e89825UL, 0xae8b8873UL, 0x1637ef16UL, 0x048240f8UL, 0xbc3e279dUL, 0x21e91f24UL, 0x99557841UL, 0x8be0d7afUL, 0x335cb0caUL, 0xed59b63bUL, 0x55e5d15eUL, 0x47507eb0UL, 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0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL, 0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL, 0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL, 0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL, 0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL, 0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL, 0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL, 0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL, 0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL, 0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL, 0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL, 0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL, 0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL, 0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL, 0x546044b4UL, 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0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL, 0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL, 0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL, 0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL, 0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL, 0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL, 0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL, 0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL, 0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL, 0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL, 0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL, 0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL, 0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL, 0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL, 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL, 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL, 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL, 0xf10605deUL #endif } }; zlib-1.2.11.dfsg/INDEX0000644000175000017500000000370411727156724014144 0ustar brooniebroonieCMakeLists.txt cmake build file ChangeLog history of changes FAQ Frequently Asked Questions about zlib INDEX this file Makefile dummy Makefile that tells you to ./configure Makefile.in template for Unix Makefile README guess what configure configure script for Unix make_vms.com makefile for VMS test/example.c zlib usages examples for build testing test/minigzip.c minimal gzip-like functionality for build testing test/infcover.c inf*.c code coverage for build coverage testing treebuild.xml XML description of source file dependencies zconf.h.cmakein zconf.h template for cmake zconf.h.in zconf.h template for configure zlib.3 Man page for zlib zlib.3.pdf Man page in PDF format zlib.map Linux symbol information zlib.pc.in Template for pkg-config descriptor zlib.pc.cmakein zlib.pc template for cmake zlib2ansi perl script to convert source files for C++ compilation amiga/ makefiles for Amiga SAS C as400/ makefiles for AS/400 doc/ documentation for formats and algorithms msdos/ makefiles for MSDOS nintendods/ makefile for Nintendo DS old/ makefiles for various architectures and zlib documentation files that have not yet been updated for zlib 1.2.x qnx/ makefiles for QNX watcom/ makefiles for OpenWatcom win32/ makefiles for Windows zlib public header files (required for library use): zconf.h zlib.h private source files used to build the zlib library: adler32.c compress.c crc32.c crc32.h deflate.c deflate.h gzclose.c gzguts.h gzlib.c gzread.c gzwrite.c infback.c inffast.c inffast.h inffixed.h inflate.c inflate.h inftrees.c inftrees.h trees.c trees.h uncompr.c zutil.c zutil.h source files for sample programs See examples/README.examples unsupported contributions by third parties See contrib/README.contrib zlib-1.2.11.dfsg/make_vms.com0000644000175000017500000006344211726537746015667 0ustar brooniebroonie$! make libz under VMS written by $! Martin P.J. Zinser $! $! In case of problems with the install you might contact me at $! zinser@zinser.no-ip.info(preferred) or $! martin.zinser@eurexchange.com (work) $! $! Make procedure history for Zlib $! $!------------------------------------------------------------------------------ $! Version history $! 0.01 20060120 First version to receive a number $! 0.02 20061008 Adapt to new Makefile.in $! 0.03 20091224 Add support for large file check $! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite $! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in $! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new exmples $! subdir path, update module search in makefile.in $! 0.07 20120115 Triggered by work done by Alexey Chupahin completly redesigned $! shared image creation $! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared $! image $! 0.09 20120305 SMS. P1 sets builder ("MMK", "MMS", " " (built-in)). $! "" -> automatic, preference: MMK, MMS, built-in. $! $ on error then goto err_exit $! $ true = 1 $ false = 0 $ tmpnam = "temp_" + f$getjpi("","pid") $ tt = tmpnam + ".txt" $ tc = tmpnam + ".c" $ th = tmpnam + ".h" $ define/nolog tconfig 'th' $ its_decc = false $ its_vaxc = false $ its_gnuc = false $ s_case = False $! $! Setup variables holding "config" information $! $ Make = "''p1'" $ name = "Zlib" $ version = "?.?.?" $ v_string = "ZLIB_VERSION" $ v_file = "zlib.h" $ ccopt = "/include = []" $ lopts = "" $ dnsrl = "" $ aconf_in_file = "zconf.h.in#zconf.h_in#zconf_h.in" $ conf_check_string = "" $ linkonly = false $ optfile = name + ".opt" $ mapfile = name + ".map" $ libdefs = "" $ vax = f$getsyi("HW_MODEL").lt.1024 $ axp = f$getsyi("HW_MODEL").ge.1024 .and. f$getsyi("HW_MODEL").lt.4096 $ ia64 = f$getsyi("HW_MODEL").ge.4096 $! $! 2012-03-05 SMS. $! Why is this needed? And if it is needed, why not simply ".not. vax"? $! $!!! if axp .or. ia64 then set proc/parse=extended $! $ whoami = f$parse(f$environment("Procedure"),,,,"NO_CONCEAL") $ mydef = F$parse(whoami,,,"DEVICE") $ mydir = f$parse(whoami,,,"DIRECTORY") - "][" $ myproc = f$parse(whoami,,,"Name") + f$parse(whoami,,,"type") $! $! Check for MMK/MMS $! $ if (Make .eqs. "") $ then $ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS" $ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK" $ else $ Make = f$edit( Make, "trim") $ endif $! $ gosub find_version $! $ open/write topt tmp.opt $ open/write optf 'optfile' $! $ gosub check_opts $! $! Look for the compiler used $! $ gosub check_compiler $ close topt $ close optf $! $ if its_decc $ then $ ccopt = "/prefix=all" + ccopt $ if f$trnlnm("SYS") .eqs. "" $ then $ if axp $ then $ define sys sys$library: $ else $ ccopt = "/decc" + ccopt $ define sys decc$library_include: $ endif $ endif $! $! 2012-03-05 SMS. $! Why /NAMES = AS_IS? Why not simply ".not. vax"? And why not on VAX? $! $ if axp .or. ia64 $ then $ ccopt = ccopt + "/name=as_is/opt=(inline=speed)" $ s_case = true $ endif $ endif $ if its_vaxc .or. its_gnuc $ then $ if f$trnlnm("SYS").eqs."" then define sys sys$library: $ endif $! $! Build a fake configure input header $! $ open/write conf_hin config.hin $ write conf_hin "#undef _LARGEFILE64_SOURCE" $ close conf_hin $! $! $ i = 0 $FIND_ACONF: $ fname = f$element(i,"#",aconf_in_file) $ if fname .eqs. "#" then goto AMISS_ERR $ if f$search(fname) .eqs. "" $ then $ i = i + 1 $ goto find_aconf $ endif $ open/read/err=aconf_err aconf_in 'fname' $ open/write aconf zconf.h $ACONF_LOOP: $ read/end_of_file=aconf_exit aconf_in line $ work = f$edit(line, "compress,trim") $ if f$extract(0,6,work) .nes. "#undef" $ then $ if f$extract(0,12,work) .nes. "#cmakedefine" $ then $ write aconf line $ endif $ else $ cdef = f$element(1," ",work) $ gosub check_config $ endif $ goto aconf_loop $ACONF_EXIT: $ write aconf "" $ write aconf "/* VMS specifics added by make_vms.com: */" $ write aconf "#define VMS 1" $ write aconf "#include " $ write aconf "#include " $ write aconf "#ifdef _LARGEFILE" $ write aconf "# define off64_t __off64_t" $ write aconf "# define fopen64 fopen" $ write aconf "# define fseeko64 fseeko" $ write aconf "# define lseek64 lseek" $ write aconf "# define ftello64 ftell" $ write aconf "#endif" $ write aconf "#if !defined( __VAX) && (__CRTL_VER >= 70312000)" $ write aconf "# define HAVE_VSNPRINTF" $ write aconf "#endif" $ close aconf_in $ close aconf $ if f$search("''th'") .nes. "" then delete 'th';* $! Build the thing plain or with mms $! $ write sys$output "Compiling Zlib sources ..." $ if make.eqs."" $ then $ if (f$search( "example.obj;*") .nes. "") then delete example.obj;* $ if (f$search( "minigzip.obj;*") .nes. "") then delete minigzip.obj;* $ CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" - adler32.c zlib.h zconf.h $ CALL MAKE compress.OBJ "CC ''CCOPT' compress" - compress.c zlib.h zconf.h $ CALL MAKE crc32.OBJ "CC ''CCOPT' crc32" - crc32.c zlib.h zconf.h $ CALL MAKE deflate.OBJ "CC ''CCOPT' deflate" - deflate.c deflate.h zutil.h zlib.h zconf.h $ CALL MAKE gzclose.OBJ "CC ''CCOPT' gzclose" - gzclose.c zutil.h zlib.h zconf.h $ CALL MAKE gzlib.OBJ "CC ''CCOPT' gzlib" - gzlib.c zutil.h zlib.h zconf.h $ CALL MAKE gzread.OBJ "CC ''CCOPT' gzread" - gzread.c zutil.h zlib.h zconf.h $ CALL MAKE gzwrite.OBJ "CC ''CCOPT' gzwrite" - gzwrite.c zutil.h zlib.h zconf.h $ CALL MAKE infback.OBJ "CC ''CCOPT' infback" - infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h $ CALL MAKE inffast.OBJ "CC ''CCOPT' inffast" - inffast.c zutil.h zlib.h zconf.h inffast.h $ CALL MAKE inflate.OBJ "CC ''CCOPT' inflate" - inflate.c zutil.h zlib.h zconf.h infblock.h $ CALL MAKE inftrees.OBJ "CC ''CCOPT' inftrees" - inftrees.c zutil.h zlib.h zconf.h inftrees.h $ CALL MAKE trees.OBJ "CC ''CCOPT' trees" - trees.c deflate.h zutil.h zlib.h zconf.h $ CALL MAKE uncompr.OBJ "CC ''CCOPT' uncompr" - uncompr.c zlib.h zconf.h $ CALL MAKE zutil.OBJ "CC ''CCOPT' zutil" - zutil.c zutil.h zlib.h zconf.h $ write sys$output "Building Zlib ..." $ CALL MAKE libz.OLB "lib/crea libz.olb *.obj" *.OBJ $ write sys$output "Building example..." $ CALL MAKE example.OBJ "CC ''CCOPT' [.test]example" - [.test]example.c zlib.h zconf.h $ call make example.exe "LINK example,libz.olb/lib" example.obj libz.olb $ write sys$output "Building minigzip..." $ CALL MAKE minigzip.OBJ "CC ''CCOPT' [.test]minigzip" - [.test]minigzip.c zlib.h zconf.h $ call make minigzip.exe - "LINK minigzip,libz.olb/lib" - minigzip.obj libz.olb $ else $ gosub crea_mms $ write sys$output "Make ''name' ''version' with ''Make' " $ 'make' $ endif $! $! Create shareable image $! $ gosub crea_olist $ write sys$output "Creating libzshr.exe" $ call map_2_shopt 'mapfile' 'optfile' $ LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,'optfile'/opt $ write sys$output "Zlib build completed" $ delete/nolog tmp.opt;* $ exit $AMISS_ERR: $ write sys$output "No source for config.hin found." $ write sys$output "Tried any of ''aconf_in_file'" $ goto err_exit $CC_ERR: $ write sys$output "C compiler required to build ''name'" $ goto err_exit $ERR_EXIT: $ set message/facil/ident/sever/text $ close/nolog optf $ close/nolog topt $ close/nolog aconf_in $ close/nolog aconf $ close/nolog out $ close/nolog min $ close/nolog mod $ close/nolog h_in $ write sys$output "Exiting..." $ exit 2 $! $! $MAKE: SUBROUTINE !SUBROUTINE TO CHECK DEPENDENCIES $ V = 'F$Verify(0) $! P1 = What we are trying to make $! P2 = Command to make it $! P3 - P8 What it depends on $ $ If F$Search(P1) .Eqs. "" Then Goto Makeit $ Time = F$CvTime(F$File(P1,"RDT")) $arg=3 $Loop: $ Argument = P'arg $ If Argument .Eqs. "" Then Goto Exit $ El=0 $Loop2: $ File = F$Element(El," ",Argument) $ If File .Eqs. " " Then Goto Endl $ AFile = "" $Loop3: $ OFile = AFile $ AFile = F$Search(File) $ If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl $ If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit $ Goto Loop3 $NextEL: $ El = El + 1 $ Goto Loop2 $EndL: $ arg=arg+1 $ If arg .Le. 8 Then Goto Loop $ Goto Exit $ $Makeit: $ VV=F$VERIFY(0) $ write sys$output P2 $ 'P2 $ VV='F$Verify(VV) $Exit: $ If V Then Set Verify $ENDSUBROUTINE $!------------------------------------------------------------------------------ $! $! Check command line options and set symbols accordingly $! $!------------------------------------------------------------------------------ $! Version history $! 0.01 20041206 First version to receive a number $! 0.02 20060126 Add new "HELP" target $ CHECK_OPTS: $ i = 1 $ OPT_LOOP: $ if i .lt. 9 $ then $ cparm = f$edit(p'i',"upcase") $! $! Check if parameter actually contains something $! $ if f$edit(cparm,"trim") .nes. "" $ then $ if cparm .eqs. "DEBUG" $ then $ ccopt = ccopt + "/noopt/deb" $ lopts = lopts + "/deb" $ endif $ if f$locate("CCOPT=",cparm) .lt. f$length(cparm) $ then $ start = f$locate("=",cparm) + 1 $ len = f$length(cparm) - start $ ccopt = ccopt + f$extract(start,len,cparm) $ if f$locate("AS_IS",f$edit(ccopt,"UPCASE")) .lt. f$length(ccopt) - then s_case = true $ endif $ if cparm .eqs. "LINK" then linkonly = true $ if f$locate("LOPTS=",cparm) .lt. f$length(cparm) $ then $ start = f$locate("=",cparm) + 1 $ len = f$length(cparm) - start $ lopts = lopts + f$extract(start,len,cparm) $ endif $ if f$locate("CC=",cparm) .lt. f$length(cparm) $ then $ start = f$locate("=",cparm) + 1 $ len = f$length(cparm) - start $ cc_com = f$extract(start,len,cparm) if (cc_com .nes. "DECC") .and. - (cc_com .nes. "VAXC") .and. - (cc_com .nes. "GNUC") $ then $ write sys$output "Unsupported compiler choice ''cc_com' ignored" $ write sys$output "Use DECC, VAXC, or GNUC instead" $ else $ if cc_com .eqs. "DECC" then its_decc = true $ if cc_com .eqs. "VAXC" then its_vaxc = true $ if cc_com .eqs. "GNUC" then its_gnuc = true $ endif $ endif $ if f$locate("MAKE=",cparm) .lt. f$length(cparm) $ then $ start = f$locate("=",cparm) + 1 $ len = f$length(cparm) - start $ mmks = f$extract(start,len,cparm) $ if (mmks .eqs. "MMK") .or. (mmks .eqs. "MMS") $ then $ make = mmks $ else $ write sys$output "Unsupported make choice ''mmks' ignored" $ write sys$output "Use MMK or MMS instead" $ endif $ endif $ if cparm .eqs. "HELP" then gosub bhelp $ endif $ i = i + 1 $ goto opt_loop $ endif $ return $!------------------------------------------------------------------------------ $! $! Look for the compiler used $! $! Version history $! 0.01 20040223 First version to receive a number $! 0.02 20040229 Save/set value of decc$no_rooted_search_lists $! 0.03 20060202 Extend handling of GNU C $! 0.04 20090402 Compaq -> hp $CHECK_COMPILER: $ if (.not. (its_decc .or. its_vaxc .or. its_gnuc)) $ then $ its_decc = (f$search("SYS$SYSTEM:DECC$COMPILER.EXE") .nes. "") $ its_vaxc = .not. its_decc .and. (F$Search("SYS$System:VAXC.Exe") .nes. "") $ its_gnuc = .not. (its_decc .or. its_vaxc) .and. (f$trnlnm("gnu_cc") .nes. "") $ endif $! $! Exit if no compiler available $! $ if (.not. (its_decc .or. its_vaxc .or. its_gnuc)) $ then goto CC_ERR $ else $ if its_decc $ then $ write sys$output "CC compiler check ... hp C" $ if f$trnlnm("decc$no_rooted_search_lists") .nes. "" $ then $ dnrsl = f$trnlnm("decc$no_rooted_search_lists") $ endif $ define/nolog decc$no_rooted_search_lists 1 $ else $ if its_vaxc then write sys$output "CC compiler check ... VAX C" $ if its_gnuc $ then $ write sys$output "CC compiler check ... GNU C" $ if f$trnlnm(topt) then write topt "gnu_cc:[000000]gcclib.olb/lib" $ if f$trnlnm(optf) then write optf "gnu_cc:[000000]gcclib.olb/lib" $ cc = "gcc" $ endif $ if f$trnlnm(topt) then write topt "sys$share:vaxcrtl.exe/share" $ if f$trnlnm(optf) then write optf "sys$share:vaxcrtl.exe/share" $ endif $ endif $ return $!------------------------------------------------------------------------------ $! $! If MMS/MMK are available dump out the descrip.mms if required $! $CREA_MMS: $ write sys$output "Creating descrip.mms..." $ create descrip.mms $ open/append out descrip.mms $ copy sys$input: out $ deck # descrip.mms: MMS description file for building zlib on VMS # written by Martin P.J. Zinser # OBJS = adler32.obj, compress.obj, crc32.obj, gzclose.obj, gzlib.obj\ gzread.obj, gzwrite.obj, uncompr.obj, infback.obj\ deflate.obj, trees.obj, zutil.obj, inflate.obj, \ inftrees.obj, inffast.obj $ eod $ write out "CFLAGS=", ccopt $ write out "LOPTS=", lopts $ write out "all : example.exe minigzip.exe libz.olb" $ copy sys$input: out $ deck @ write sys$output " Example applications available" libz.olb : libz.olb($(OBJS)) @ write sys$output " libz available" example.exe : example.obj libz.olb link $(LOPTS) example,libz.olb/lib minigzip.exe : minigzip.obj libz.olb link $(LOPTS) minigzip,libz.olb/lib clean : delete *.obj;*,libz.olb;*,*.opt;*,*.exe;* # Other dependencies. adler32.obj : adler32.c zutil.h zlib.h zconf.h compress.obj : compress.c zlib.h zconf.h crc32.obj : crc32.c zutil.h zlib.h zconf.h deflate.obj : deflate.c deflate.h zutil.h zlib.h zconf.h example.obj : [.test]example.c zlib.h zconf.h gzclose.obj : gzclose.c zutil.h zlib.h zconf.h gzlib.obj : gzlib.c zutil.h zlib.h zconf.h gzread.obj : gzread.c zutil.h zlib.h zconf.h gzwrite.obj : gzwrite.c zutil.h zlib.h zconf.h inffast.obj : inffast.c zutil.h zlib.h zconf.h inftrees.h inffast.h inflate.obj : inflate.c zutil.h zlib.h zconf.h inftrees.obj : inftrees.c zutil.h zlib.h zconf.h inftrees.h minigzip.obj : [.test]minigzip.c zlib.h zconf.h trees.obj : trees.c deflate.h zutil.h zlib.h zconf.h uncompr.obj : uncompr.c zlib.h zconf.h zutil.obj : zutil.c zutil.h zlib.h zconf.h infback.obj : infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h $ eod $ close out $ return $!------------------------------------------------------------------------------ $! $! Read list of core library sources from makefile.in and create options $! needed to build shareable image $! $CREA_OLIST: $ open/read min makefile.in $ open/write mod modules.opt $ src_check_list = "OBJZ =#OBJG =" $MRLOOP: $ read/end=mrdone min rec $ i = 0 $SRC_CHECK_LOOP: $ src_check = f$element(i, "#", src_check_list) $ i = i+1 $ if src_check .eqs. "#" then goto mrloop $ if (f$extract(0,6,rec) .nes. src_check) then goto src_check_loop $ rec = rec - src_check $ gosub extra_filnam $ if (f$element(1,"\",rec) .eqs. "\") then goto mrloop $MRSLOOP: $ read/end=mrdone min rec $ gosub extra_filnam $ if (f$element(1,"\",rec) .nes. "\") then goto mrsloop $MRDONE: $ close min $ close mod $ return $!------------------------------------------------------------------------------ $! $! Take record extracted in crea_olist and split it into single filenames $! $EXTRA_FILNAM: $ myrec = f$edit(rec - "\", "trim,compress") $ i = 0 $FELOOP: $ srcfil = f$element(i," ", myrec) $ if (srcfil .nes. " ") $ then $ write mod f$parse(srcfil,,,"NAME"), ".obj" $ i = i + 1 $ goto feloop $ endif $ return $!------------------------------------------------------------------------------ $! $! Find current Zlib version number $! $FIND_VERSION: $ open/read h_in 'v_file' $hloop: $ read/end=hdone h_in rec $ rec = f$edit(rec,"TRIM") $ if (f$extract(0,1,rec) .nes. "#") then goto hloop $ rec = f$edit(rec - "#", "TRIM") $ if f$element(0," ",rec) .nes. "define" then goto hloop $ if f$element(1," ",rec) .eqs. v_string $ then $ version = 'f$element(2," ",rec)' $ goto hdone $ endif $ goto hloop $hdone: $ close h_in $ return $!------------------------------------------------------------------------------ $! $CHECK_CONFIG: $! $ in_ldef = f$locate(cdef,libdefs) $ if (in_ldef .lt. f$length(libdefs)) $ then $ write aconf "#define ''cdef' 1" $ libdefs = f$extract(0,in_ldef,libdefs) + - f$extract(in_ldef + f$length(cdef) + 1, - f$length(libdefs) - in_ldef - f$length(cdef) - 1, - libdefs) $ else $ if (f$type('cdef') .eqs. "INTEGER") $ then $ write aconf "#define ''cdef' ", 'cdef' $ else $ if (f$type('cdef') .eqs. "STRING") $ then $ write aconf "#define ''cdef' ", """", '''cdef'', """" $ else $ gosub check_cc_def $ endif $ endif $ endif $ return $!------------------------------------------------------------------------------ $! $! Check if this is a define relating to the properties of the C/C++ $! compiler $! $ CHECK_CC_DEF: $ if (cdef .eqs. "_LARGEFILE64_SOURCE") $ then $ copy sys$input: 'tc' $ deck #include "tconfig" #define _LARGEFILE #include int main(){ FILE *fp; fp = fopen("temp.txt","r"); fseeko(fp,1,SEEK_SET); fclose(fp); } $ eod $ test_inv = false $ comm_h = false $ gosub cc_prop_check $ return $ endif $ write aconf "/* ", line, " */" $ return $!------------------------------------------------------------------------------ $! $! Check for properties of C/C++ compiler $! $! Version history $! 0.01 20031020 First version to receive a number $! 0.02 20031022 Added logic for defines with value $! 0.03 20040309 Make sure local config file gets not deleted $! 0.04 20041230 Also write include for configure run $! 0.05 20050103 Add processing of "comment defines" $CC_PROP_CHECK: $ cc_prop = true $ is_need = false $ is_need = (f$extract(0,4,cdef) .eqs. "NEED") .or. (test_inv .eq. true) $ if f$search(th) .eqs. "" then create 'th' $ set message/nofac/noident/nosever/notext $ on error then continue $ cc 'tmpnam' $ if .not. ($status) then cc_prop = false $ on error then continue $! The headers might lie about the capabilities of the RTL $ link 'tmpnam',tmp.opt/opt $ if .not. ($status) then cc_prop = false $ set message/fac/ident/sever/text $ on error then goto err_exit $ delete/nolog 'tmpnam'.*;*/exclude='th' $ if (cc_prop .and. .not. is_need) .or. - (.not. cc_prop .and. is_need) $ then $ write sys$output "Checking for ''cdef'... yes" $ if f$type('cdef_val'_yes) .nes. "" $ then $ if f$type('cdef_val'_yes) .eqs. "INTEGER" - then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_yes) $ if f$type('cdef_val'_yes) .eqs. "STRING" - then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_yes) $ else $ call write_config f$fao("#define !AS 1",cdef) $ endif $ if (cdef .eqs. "HAVE_FSEEKO") .or. (cdef .eqs. "_LARGE_FILES") .or. - (cdef .eqs. "_LARGEFILE64_SOURCE") then - call write_config f$string("#define _LARGEFILE 1") $ else $ write sys$output "Checking for ''cdef'... no" $ if (comm_h) $ then call write_config f$fao("/* !AS */",line) $ else $ if f$type('cdef_val'_no) .nes. "" $ then $ if f$type('cdef_val'_no) .eqs. "INTEGER" - then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_no) $ if f$type('cdef_val'_no) .eqs. "STRING" - then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_no) $ else $ call write_config f$fao("#undef !AS",cdef) $ endif $ endif $ endif $ return $!------------------------------------------------------------------------------ $! $! Check for properties of C/C++ compiler with multiple result values $! $! Version history $! 0.01 20040127 First version $! 0.02 20050103 Reconcile changes from cc_prop up to version 0.05 $CC_MPROP_CHECK: $ cc_prop = true $ i = 1 $ idel = 1 $ MT_LOOP: $ if f$type(result_'i') .eqs. "STRING" $ then $ set message/nofac/noident/nosever/notext $ on error then continue $ cc 'tmpnam'_'i' $ if .not. ($status) then cc_prop = false $ on error then continue $! The headers might lie about the capabilities of the RTL $ link 'tmpnam'_'i',tmp.opt/opt $ if .not. ($status) then cc_prop = false $ set message/fac/ident/sever/text $ on error then goto err_exit $ delete/nolog 'tmpnam'_'i'.*;* $ if (cc_prop) $ then $ write sys$output "Checking for ''cdef'... ", mdef_'i' $ if f$type(mdef_'i') .eqs. "INTEGER" - then call write_config f$fao("#define !AS !UL",cdef,mdef_'i') $ if f$type('cdef_val'_yes) .eqs. "STRING" - then call write_config f$fao("#define !AS !AS",cdef,mdef_'i') $ goto msym_clean $ else $ i = i + 1 $ goto mt_loop $ endif $ endif $ write sys$output "Checking for ''cdef'... no" $ call write_config f$fao("#undef !AS",cdef) $ MSYM_CLEAN: $ if (idel .le. msym_max) $ then $ delete/sym mdef_'idel' $ idel = idel + 1 $ goto msym_clean $ endif $ return $!------------------------------------------------------------------------------ $! $! Write configuration to both permanent and temporary config file $! $! Version history $! 0.01 20031029 First version to receive a number $! $WRITE_CONFIG: SUBROUTINE $ write aconf 'p1' $ open/append confh 'th' $ write confh 'p1' $ close confh $ENDSUBROUTINE $!------------------------------------------------------------------------------ $! $! Analyze the project map file and create the symbol vector for a shareable $! image from it $! $! Version history $! 0.01 20120128 First version $! 0.02 20120226 Add pre-load logic $! $ MAP_2_SHOPT: Subroutine $! $ SAY := "WRITE_ SYS$OUTPUT" $! $ IF F$SEARCH("''P1'") .EQS. "" $ THEN $ SAY "MAP_2_SHOPT-E-NOSUCHFILE: Error, inputfile ''p1' not available" $ goto exit_m2s $ ENDIF $ IF "''P2'" .EQS. "" $ THEN $ SAY "MAP_2_SHOPT: Error, no output file provided" $ goto exit_m2s $ ENDIF $! $ module1 = "deflate#deflateEnd#deflateInit_#deflateParams#deflateSetDictionary" $ module2 = "gzclose#gzerror#gzgetc#gzgets#gzopen#gzprintf#gzputc#gzputs#gzread" $ module3 = "gzseek#gztell#inflate#inflateEnd#inflateInit_#inflateSetDictionary" $ module4 = "inflateSync#uncompress#zlibVersion#compress" $ open/read map 'p1 $ if axp .or. ia64 $ then $ open/write aopt a.opt $ open/write bopt b.opt $ write aopt " CASE_SENSITIVE=YES" $ write bopt "SYMBOL_VECTOR= (-" $ mod_sym_num = 1 $ MOD_SYM_LOOP: $ if f$type(module'mod_sym_num') .nes. "" $ then $ mod_in = 0 $ MOD_SYM_IN: $ shared_proc = f$element(mod_in, "#", module'mod_sym_num') $ if shared_proc .nes. "#" $ then $ write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",- f$edit(shared_proc,"upcase"),shared_proc) $ write bopt f$fao("!AS=PROCEDURE,-",shared_proc) $ mod_in = mod_in + 1 $ goto mod_sym_in $ endif $ mod_sym_num = mod_sym_num + 1 $ goto mod_sym_loop $ endif $MAP_LOOP: $ read/end=map_end map line $ if (f$locate("{",line).lt. f$length(line)) .or. - (f$locate("global:", line) .lt. f$length(line)) $ then $ proc = true $ goto map_loop $ endif $ if f$locate("}",line).lt. f$length(line) then proc = false $ if f$locate("local:", line) .lt. f$length(line) then proc = false $ if proc $ then $ shared_proc = f$edit(line,"collapse") $ chop_semi = f$locate(";", shared_proc) $ if chop_semi .lt. f$length(shared_proc) then - shared_proc = f$extract(0, chop_semi, shared_proc) $ write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",- f$edit(shared_proc,"upcase"),shared_proc) $ write bopt f$fao("!AS=PROCEDURE,-",shared_proc) $ endif $ goto map_loop $MAP_END: $ close/nolog aopt $ close/nolog bopt $ open/append libopt 'p2' $ open/read aopt a.opt $ open/read bopt b.opt $ALOOP: $ read/end=aloop_end aopt line $ write libopt line $ goto aloop $ALOOP_END: $ close/nolog aopt $ sv = "" $BLOOP: $ read/end=bloop_end bopt svn $ if (svn.nes."") $ then $ if (sv.nes."") then write libopt sv $ sv = svn $ endif $ goto bloop $BLOOP_END: $ write libopt f$extract(0,f$length(sv)-2,sv), "-" $ write libopt ")" $ close/nolog bopt $ delete/nolog/noconf a.opt;*,b.opt;* $ else $ if vax $ then $ open/append libopt 'p2' $ mod_sym_num = 1 $ VMOD_SYM_LOOP: $ if f$type(module'mod_sym_num') .nes. "" $ then $ mod_in = 0 $ VMOD_SYM_IN: $ shared_proc = f$element(mod_in, "#", module'mod_sym_num') $ if shared_proc .nes. "#" $ then $ write libopt f$fao("UNIVERSAL=!AS",- f$edit(shared_proc,"upcase")) $ mod_in = mod_in + 1 $ goto vmod_sym_in $ endif $ mod_sym_num = mod_sym_num + 1 $ goto vmod_sym_loop $ endif $VMAP_LOOP: $ read/end=vmap_end map line $ if (f$locate("{",line).lt. f$length(line)) .or. - (f$locate("global:", line) .lt. f$length(line)) $ then $ proc = true $ goto vmap_loop $ endif $ if f$locate("}",line).lt. f$length(line) then proc = false $ if f$locate("local:", line) .lt. f$length(line) then proc = false $ if proc $ then $ shared_proc = f$edit(line,"collapse") $ chop_semi = f$locate(";", shared_proc) $ if chop_semi .lt. f$length(shared_proc) then - shared_proc = f$extract(0, chop_semi, shared_proc) $ write libopt f$fao("UNIVERSAL=!AS",- f$edit(shared_proc,"upcase")) $ endif $ goto vmap_loop $VMAP_END: $ else $ write sys$output "Unknown Architecture (Not VAX, AXP, or IA64)" $ write sys$output "No options file created" $ endif $ endif $ EXIT_M2S: $ close/nolog map $ close/nolog libopt $ endsubroutine zlib-1.2.11.dfsg/uncompr.c0000644000175000017500000000562613031760615015174 0ustar brooniebroonie/* uncompr.c -- decompress a memory buffer * Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #define ZLIB_INTERNAL #include "zlib.h" /* =========================================================================== Decompresses the source buffer into the destination buffer. *sourceLen is the byte length of the source buffer. Upon entry, *destLen is the total size of the destination buffer, which must be large enough to hold the entire uncompressed data. (The size of the uncompressed data must have been saved previously by the compressor and transmitted to the decompressor by some mechanism outside the scope of this compression library.) Upon exit, *destLen is the size of the decompressed data and *sourceLen is the number of source bytes consumed. Upon return, source + *sourceLen points to the first unused input byte. uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer, or Z_DATA_ERROR if the input data was corrupted, including if the input data is an incomplete zlib stream. */ int ZEXPORT uncompress2 (dest, destLen, source, sourceLen) Bytef *dest; uLongf *destLen; const Bytef *source; uLong *sourceLen; { z_stream stream; int err; const uInt max = (uInt)-1; uLong len, left; Byte buf[1]; /* for detection of incomplete stream when *destLen == 0 */ len = *sourceLen; if (*destLen) { left = *destLen; *destLen = 0; } else { left = 1; dest = buf; } stream.next_in = (z_const Bytef *)source; stream.avail_in = 0; stream.zalloc = (alloc_func)0; stream.zfree = (free_func)0; stream.opaque = (voidpf)0; err = inflateInit(&stream); if (err != Z_OK) return err; stream.next_out = dest; stream.avail_out = 0; do { if (stream.avail_out == 0) { stream.avail_out = left > (uLong)max ? max : (uInt)left; left -= stream.avail_out; } if (stream.avail_in == 0) { stream.avail_in = len > (uLong)max ? max : (uInt)len; len -= stream.avail_in; } err = inflate(&stream, Z_NO_FLUSH); } while (err == Z_OK); *sourceLen -= len + stream.avail_in; if (dest != buf) *destLen = stream.total_out; else if (stream.total_out && err == Z_BUF_ERROR) left = 1; inflateEnd(&stream); return err == Z_STREAM_END ? Z_OK : err == Z_NEED_DICT ? Z_DATA_ERROR : err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR : err; } int ZEXPORT uncompress (dest, destLen, source, sourceLen) Bytef *dest; uLongf *destLen; const Bytef *source; uLong sourceLen; { return uncompress2(dest, destLen, source, &sourceLen); } zlib-1.2.11.dfsg/zlib2ansi0000755000175000017500000000746710514212073015166 0ustar brooniebroonie#!/usr/bin/perl # Transform K&R C function definitions into ANSI equivalent. # # Author: Paul Marquess # Version: 1.0 # Date: 3 October 2006 # TODO # # Asumes no function pointer parameters. unless they are typedefed. # Assumes no literal strings that look like function definitions # Assumes functions start at the beginning of a line use strict; use warnings; local $/; $_ = <>; my $sp = qr{ \s* (?: /\* .*? \*/ )? \s* }x; # assume no nested comments my $d1 = qr{ $sp (?: [\w\*\s]+ $sp)* $sp \w+ $sp [\[\]\s]* $sp }x ; my $decl = qr{ $sp (?: \w+ $sp )+ $d1 }xo ; my $dList = qr{ $sp $decl (?: $sp , $d1 )* $sp ; $sp }xo ; while (s/^ ( # Start $1 ( # Start $2 .*? # Minimal eat content ( ^ \w [\w\s\*]+ ) # $3 -- function name \s* # optional whitespace ) # $2 - Matched up to before parameter list \( \s* # Literal "(" + optional whitespace ( [^\)]+ ) # $4 - one or more anythings except ")" \s* \) # optional whitespace surrounding a Literal ")" ( (?: $dList )+ ) # $5 $sp ^ { # literal "{" at start of line ) # Remember to $1 //xsom ) { my $all = $1 ; my $prefix = $2; my $param_list = $4 ; my $params = $5; StripComments($params); StripComments($param_list); $param_list =~ s/^\s+//; $param_list =~ s/\s+$//; my $i = 0 ; my %pList = map { $_ => $i++ } split /\s*,\s*/, $param_list; my $pMatch = '(\b' . join('|', keys %pList) . '\b)\W*$' ; my @params = split /\s*;\s*/, $params; my @outParams = (); foreach my $p (@params) { if ($p =~ /,/) { my @bits = split /\s*,\s*/, $p; my $first = shift @bits; $first =~ s/^\s*//; push @outParams, $first; $first =~ /^(\w+\s*)/; my $type = $1 ; push @outParams, map { $type . $_ } @bits; } else { $p =~ s/^\s+//; push @outParams, $p; } } my %tmp = map { /$pMatch/; $_ => $pList{$1} } @outParams ; @outParams = map { " $_" } sort { $tmp{$a} <=> $tmp{$b} } @outParams ; print $prefix ; print "(\n" . join(",\n", @outParams) . ")\n"; print "{" ; } # Output any trailing code. print ; exit 0; sub StripComments { no warnings; # Strip C & C++ coments # From the perlfaq $_[0] =~ s{ /\* ## Start of /* ... */ comment [^*]*\*+ ## Non-* followed by 1-or-more *'s ( [^/*][^*]*\*+ )* ## 0-or-more things which don't start with / ## but do end with '*' / ## End of /* ... */ comment | ## OR C++ Comment // ## Start of C++ comment // [^\n]* ## followed by 0-or-more non end of line characters | ## OR various things which aren't comments: ( " ## Start of " ... " string ( \\. ## Escaped char | ## OR [^"\\] ## Non "\ )* " ## End of " ... " string | ## OR ' ## Start of ' ... ' string ( \\. ## Escaped char | ## OR [^'\\] ## Non '\ )* ' ## End of ' ... ' string | ## OR . ## Anything other char [^/"'\\]* ## Chars which doesn't start a comment, string or escape ) }{$2}gxs; } zlib-1.2.11.dfsg/inftrees.c0000644000175000017500000003130713036730604015323 0ustar brooniebroonie/* inftrees.c -- generate Huffman trees for efficient decoding * Copyright (C) 1995-2017 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "zutil.h" #include "inftrees.h" #define MAXBITS 15 const char inflate_copyright[] = " inflate 1.2.11 Copyright 1995-2017 Mark Adler "; /* If you use the zlib library in a product, an acknowledgment is welcome in the documentation of your product. If for some reason you cannot include such an acknowledgment, I would appreciate that you keep this copyright string in the executable of your product. */ /* Build a set of tables to decode the provided canonical Huffman code. The code lengths are lens[0..codes-1]. The result starts at *table, whose indices are 0..2^bits-1. work is a writable array of at least lens shorts, which is used as a work area. type is the type of code to be generated, CODES, LENS, or DISTS. On return, zero is success, -1 is an invalid code, and +1 means that ENOUGH isn't enough. table on return points to the next available entry's address. bits is the requested root table index bits, and on return it is the actual root table index bits. It will differ if the request is greater than the longest code or if it is less than the shortest code. */ int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work) codetype type; unsigned short FAR *lens; unsigned codes; code FAR * FAR *table; unsigned FAR *bits; unsigned short FAR *work; { unsigned len; /* a code's length in bits */ unsigned sym; /* index of code symbols */ unsigned min, max; /* minimum and maximum code lengths */ unsigned root; /* number of index bits for root table */ unsigned curr; /* number of index bits for current table */ unsigned drop; /* code bits to drop for sub-table */ int left; /* number of prefix codes available */ unsigned used; /* code entries in table used */ unsigned huff; /* Huffman code */ unsigned incr; /* for incrementing code, index */ unsigned fill; /* index for replicating entries */ unsigned low; /* low bits for current root entry */ unsigned mask; /* mask for low root bits */ code here; /* table entry for duplication */ code FAR *next; /* next available space in table */ const unsigned short FAR *base; /* base value table to use */ const unsigned short FAR *extra; /* extra bits table to use */ unsigned match; /* use base and extra for symbol >= match */ unsigned short count[MAXBITS+1]; /* number of codes of each length */ unsigned short offs[MAXBITS+1]; /* offsets in table for each length */ static const unsigned short lbase[31] = { /* Length codes 257..285 base */ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; static const unsigned short lext[31] = { /* Length codes 257..285 extra */ 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 77, 202}; static const unsigned short dbase[32] = { /* Distance codes 0..29 base */ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 0, 0}; static const unsigned short dext[32] = { /* Distance codes 0..29 extra */ 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 64, 64}; /* Process a set of code lengths to create a canonical Huffman code. The code lengths are lens[0..codes-1]. Each length corresponds to the symbols 0..codes-1. The Huffman code is generated by first sorting the symbols by length from short to long, and retaining the symbol order for codes with equal lengths. Then the code starts with all zero bits for the first code of the shortest length, and the codes are integer increments for the same length, and zeros are appended as the length increases. For the deflate format, these bits are stored backwards from their more natural integer increment ordering, and so when the decoding tables are built in the large loop below, the integer codes are incremented backwards. This routine assumes, but does not check, that all of the entries in lens[] are in the range 0..MAXBITS. The caller must assure this. 1..MAXBITS is interpreted as that code length. zero means that that symbol does not occur in this code. The codes are sorted by computing a count of codes for each length, creating from that a table of starting indices for each length in the sorted table, and then entering the symbols in order in the sorted table. The sorted table is work[], with that space being provided by the caller. The length counts are used for other purposes as well, i.e. finding the minimum and maximum length codes, determining if there are any codes at all, checking for a valid set of lengths, and looking ahead at length counts to determine sub-table sizes when building the decoding tables. */ /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ for (len = 0; len <= MAXBITS; len++) count[len] = 0; for (sym = 0; sym < codes; sym++) count[lens[sym]]++; /* bound code lengths, force root to be within code lengths */ root = *bits; for (max = MAXBITS; max >= 1; max--) if (count[max] != 0) break; if (root > max) root = max; if (max == 0) { /* no symbols to code at all */ here.op = (unsigned char)64; /* invalid code marker */ here.bits = (unsigned char)1; here.val = (unsigned short)0; *(*table)++ = here; /* make a table to force an error */ *(*table)++ = here; *bits = 1; return 0; /* no symbols, but wait for decoding to report error */ } for (min = 1; min < max; min++) if (count[min] != 0) break; if (root < min) root = min; /* check for an over-subscribed or incomplete set of lengths */ left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= count[len]; if (left < 0) return -1; /* over-subscribed */ } if (left > 0 && (type == CODES || max != 1)) return -1; /* incomplete set */ /* generate offsets into symbol table for each length for sorting */ offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + count[len]; /* sort symbols by length, by symbol order within each length */ for (sym = 0; sym < codes; sym++) if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym; /* Create and fill in decoding tables. In this loop, the table being filled is at next and has curr index bits. The code being used is huff with length len. That code is converted to an index by dropping drop bits off of the bottom. For codes where len is less than drop + curr, those top drop + curr - len bits are incremented through all values to fill the table with replicated entries. root is the number of index bits for the root table. When len exceeds root, sub-tables are created pointed to by the root entry with an index of the low root bits of huff. This is saved in low to check for when a new sub-table should be started. drop is zero when the root table is being filled, and drop is root when sub-tables are being filled. When a new sub-table is needed, it is necessary to look ahead in the code lengths to determine what size sub-table is needed. The length counts are used for this, and so count[] is decremented as codes are entered in the tables. used keeps track of how many table entries have been allocated from the provided *table space. It is checked for LENS and DIST tables against the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in the initial root table size constants. See the comments in inftrees.h for more information. sym increments through all symbols, and the loop terminates when all codes of length max, i.e. all codes, have been processed. This routine permits incomplete codes, so another loop after this one fills in the rest of the decoding tables with invalid code markers. */ /* set up for code type */ switch (type) { case CODES: base = extra = work; /* dummy value--not used */ match = 20; break; case LENS: base = lbase; extra = lext; match = 257; break; default: /* DISTS */ base = dbase; extra = dext; match = 0; } /* initialize state for loop */ huff = 0; /* starting code */ sym = 0; /* starting code symbol */ len = min; /* starting code length */ next = *table; /* current table to fill in */ curr = root; /* current table index bits */ drop = 0; /* current bits to drop from code for index */ low = (unsigned)(-1); /* trigger new sub-table when len > root */ used = 1U << root; /* use root table entries */ mask = used - 1; /* mask for comparing low */ /* check available table space */ if ((type == LENS && used > ENOUGH_LENS) || (type == DISTS && used > ENOUGH_DISTS)) return 1; /* process all codes and make table entries */ for (;;) { /* create table entry */ here.bits = (unsigned char)(len - drop); if (work[sym] + 1U < match) { here.op = (unsigned char)0; here.val = work[sym]; } else if (work[sym] >= match) { here.op = (unsigned char)(extra[work[sym] - match]); here.val = base[work[sym] - match]; } else { here.op = (unsigned char)(32 + 64); /* end of block */ here.val = 0; } /* replicate for those indices with low len bits equal to huff */ incr = 1U << (len - drop); fill = 1U << curr; min = fill; /* save offset to next table */ do { fill -= incr; next[(huff >> drop) + fill] = here; } while (fill != 0); /* backwards increment the len-bit code huff */ incr = 1U << (len - 1); while (huff & incr) incr >>= 1; if (incr != 0) { huff &= incr - 1; huff += incr; } else huff = 0; /* go to next symbol, update count, len */ sym++; if (--(count[len]) == 0) { if (len == max) break; len = lens[work[sym]]; } /* create new sub-table if needed */ if (len > root && (huff & mask) != low) { /* if first time, transition to sub-tables */ if (drop == 0) drop = root; /* increment past last table */ next += min; /* here min is 1 << curr */ /* determine length of next table */ curr = len - drop; left = (int)(1 << curr); while (curr + drop < max) { left -= count[curr + drop]; if (left <= 0) break; curr++; left <<= 1; } /* check for enough space */ used += 1U << curr; if ((type == LENS && used > ENOUGH_LENS) || (type == DISTS && used > ENOUGH_DISTS)) return 1; /* point entry in root table to sub-table */ low = huff & mask; (*table)[low].op = (unsigned char)curr; (*table)[low].bits = (unsigned char)root; (*table)[low].val = (unsigned short)(next - *table); } } /* fill in remaining table entry if code is incomplete (guaranteed to have at most one remaining entry, since if the code is incomplete, the maximum code length that was allowed to get this far is one bit) */ if (huff != 0) { here.op = (unsigned char)64; /* invalid code marker */ here.bits = (unsigned char)(len - drop); here.val = (unsigned short)0; next[huff] = here; } /* set return parameters */ *table += used; *bits = root; return 0; } zlib-1.2.11.dfsg/gzlib.c0000644000175000017500000004032713036730604014615 0ustar brooniebroonie/* gzlib.c -- zlib functions common to reading and writing gzip files * Copyright (C) 2004-2017 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "gzguts.h" #if defined(_WIN32) && !defined(__BORLANDC__) && !defined(__MINGW32__) # define LSEEK _lseeki64 #else #if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 # define LSEEK lseek64 #else # define LSEEK lseek #endif #endif /* Local functions */ local void gz_reset OF((gz_statep)); local gzFile gz_open OF((const void *, int, const char *)); #if defined UNDER_CE /* Map the Windows error number in ERROR to a locale-dependent error message string and return a pointer to it. Typically, the values for ERROR come from GetLastError. The string pointed to shall not be modified by the application, but may be overwritten by a subsequent call to gz_strwinerror The gz_strwinerror function does not change the current setting of GetLastError. */ char ZLIB_INTERNAL *gz_strwinerror (error) DWORD error; { static char buf[1024]; wchar_t *msgbuf; DWORD lasterr = GetLastError(); DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, error, 0, /* Default language */ (LPVOID)&msgbuf, 0, NULL); if (chars != 0) { /* If there is an \r\n appended, zap it. */ if (chars >= 2 && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { chars -= 2; msgbuf[chars] = 0; } if (chars > sizeof (buf) - 1) { chars = sizeof (buf) - 1; msgbuf[chars] = 0; } wcstombs(buf, msgbuf, chars + 1); LocalFree(msgbuf); } else { sprintf(buf, "unknown win32 error (%ld)", error); } SetLastError(lasterr); return buf; } #endif /* UNDER_CE */ /* Reset gzip file state */ local void gz_reset(state) gz_statep state; { state->x.have = 0; /* no output data available */ if (state->mode == GZ_READ) { /* for reading ... */ state->eof = 0; /* not at end of file */ state->past = 0; /* have not read past end yet */ state->how = LOOK; /* look for gzip header */ } state->seek = 0; /* no seek request pending */ gz_error(state, Z_OK, NULL); /* clear error */ state->x.pos = 0; /* no uncompressed data yet */ state->strm.avail_in = 0; /* no input data yet */ } /* Open a gzip file either by name or file descriptor. */ local gzFile gz_open(path, fd, mode) const void *path; int fd; const char *mode; { gz_statep state; z_size_t len; int oflag; #ifdef O_CLOEXEC int cloexec = 0; #endif #ifdef O_EXCL int exclusive = 0; #endif /* check input */ if (path == NULL) return NULL; /* allocate gzFile structure to return */ state = (gz_statep)malloc(sizeof(gz_state)); if (state == NULL) return NULL; state->size = 0; /* no buffers allocated yet */ state->want = GZBUFSIZE; /* requested buffer size */ state->msg = NULL; /* no error message yet */ /* interpret mode */ state->mode = GZ_NONE; state->level = Z_DEFAULT_COMPRESSION; state->strategy = Z_DEFAULT_STRATEGY; state->direct = 0; while (*mode) { if (*mode >= '0' && *mode <= '9') state->level = *mode - '0'; else switch (*mode) { case 'r': state->mode = GZ_READ; break; #ifndef NO_GZCOMPRESS case 'w': state->mode = GZ_WRITE; break; case 'a': state->mode = GZ_APPEND; break; #endif case '+': /* can't read and write at the same time */ free(state); return NULL; case 'b': /* ignore -- will request binary anyway */ break; #ifdef O_CLOEXEC case 'e': cloexec = 1; break; #endif #ifdef O_EXCL case 'x': exclusive = 1; break; #endif case 'f': state->strategy = Z_FILTERED; break; case 'h': state->strategy = Z_HUFFMAN_ONLY; break; case 'R': state->strategy = Z_RLE; break; case 'F': state->strategy = Z_FIXED; break; case 'T': state->direct = 1; break; default: /* could consider as an error, but just ignore */ ; } mode++; } /* must provide an "r", "w", or "a" */ if (state->mode == GZ_NONE) { free(state); return NULL; } /* can't force transparent read */ if (state->mode == GZ_READ) { if (state->direct) { free(state); return NULL; } state->direct = 1; /* for empty file */ } /* save the path name for error messages */ #ifdef WIDECHAR if (fd == -2) { len = wcstombs(NULL, path, 0); if (len == (z_size_t)-1) len = 0; } else #endif len = strlen((const char *)path); state->path = (char *)malloc(len + 1); if (state->path == NULL) { free(state); return NULL; } #ifdef WIDECHAR if (fd == -2) if (len) wcstombs(state->path, path, len + 1); else *(state->path) = 0; else #endif #if !defined(NO_snprintf) && !defined(NO_vsnprintf) (void)snprintf(state->path, len + 1, "%s", (const char *)path); #else strcpy(state->path, path); #endif /* compute the flags for open() */ oflag = #ifdef O_LARGEFILE O_LARGEFILE | #endif #ifdef O_BINARY O_BINARY | #endif #ifdef O_CLOEXEC (cloexec ? O_CLOEXEC : 0) | #endif (state->mode == GZ_READ ? O_RDONLY : (O_WRONLY | O_CREAT | #ifdef O_EXCL (exclusive ? O_EXCL : 0) | #endif (state->mode == GZ_WRITE ? O_TRUNC : O_APPEND))); /* open the file with the appropriate flags (or just use fd) */ state->fd = fd > -1 ? fd : ( #ifdef WIDECHAR fd == -2 ? _wopen(path, oflag, 0666) : #endif open((const char *)path, oflag, 0666)); if (state->fd == -1) { free(state->path); free(state); return NULL; } if (state->mode == GZ_APPEND) { LSEEK(state->fd, 0, SEEK_END); /* so gzoffset() is correct */ state->mode = GZ_WRITE; /* simplify later checks */ } /* save the current position for rewinding (only if reading) */ if (state->mode == GZ_READ) { state->start = LSEEK(state->fd, 0, SEEK_CUR); if (state->start == -1) state->start = 0; } /* initialize stream */ gz_reset(state); /* return stream */ return (gzFile)state; } /* -- see zlib.h -- */ gzFile ZEXPORT gzopen(path, mode) const char *path; const char *mode; { return gz_open(path, -1, mode); } /* -- see zlib.h -- */ gzFile ZEXPORT gzopen64(path, mode) const char *path; const char *mode; { return gz_open(path, -1, mode); } /* -- see zlib.h -- */ gzFile ZEXPORT gzdopen(fd, mode) int fd; const char *mode; { char *path; /* identifier for error messages */ gzFile gz; if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL) return NULL; #if !defined(NO_snprintf) && !defined(NO_vsnprintf) (void)snprintf(path, 7 + 3 * sizeof(int), "", fd); #else sprintf(path, "", fd); /* for debugging */ #endif gz = gz_open(path, fd, mode); free(path); return gz; } /* -- see zlib.h -- */ #ifdef WIDECHAR gzFile ZEXPORT gzopen_w(path, mode) const wchar_t *path; const char *mode; { return gz_open(path, -2, mode); } #endif /* -- see zlib.h -- */ int ZEXPORT gzbuffer(file, size) gzFile file; unsigned size; { gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return -1; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return -1; /* make sure we haven't already allocated memory */ if (state->size != 0) return -1; /* check and set requested size */ if ((size << 1) < size) return -1; /* need to be able to double it */ if (size < 2) size = 2; /* need two bytes to check magic header */ state->want = size; return 0; } /* -- see zlib.h -- */ int ZEXPORT gzrewind(file) gzFile file; { gz_statep state; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; /* check that we're reading and that there's no error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return -1; /* back up and start over */ if (LSEEK(state->fd, state->start, SEEK_SET) == -1) return -1; gz_reset(state); return 0; } /* -- see zlib.h -- */ z_off64_t ZEXPORT gzseek64(file, offset, whence) gzFile file; z_off64_t offset; int whence; { unsigned n; z_off64_t ret; gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return -1; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return -1; /* check that there's no error */ if (state->err != Z_OK && state->err != Z_BUF_ERROR) return -1; /* can only seek from start or relative to current position */ if (whence != SEEK_SET && whence != SEEK_CUR) return -1; /* normalize offset to a SEEK_CUR specification */ if (whence == SEEK_SET) offset -= state->x.pos; else if (state->seek) offset += state->skip; state->seek = 0; /* if within raw area while reading, just go there */ if (state->mode == GZ_READ && state->how == COPY && state->x.pos + offset >= 0) { ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR); if (ret == -1) return -1; state->x.have = 0; state->eof = 0; state->past = 0; state->seek = 0; gz_error(state, Z_OK, NULL); state->strm.avail_in = 0; state->x.pos += offset; return state->x.pos; } /* calculate skip amount, rewinding if needed for back seek when reading */ if (offset < 0) { if (state->mode != GZ_READ) /* writing -- can't go backwards */ return -1; offset += state->x.pos; if (offset < 0) /* before start of file! */ return -1; if (gzrewind(file) == -1) /* rewind, then skip to offset */ return -1; } /* if reading, skip what's in output buffer (one less gzgetc() check) */ if (state->mode == GZ_READ) { n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ? (unsigned)offset : state->x.have; state->x.have -= n; state->x.next += n; state->x.pos += n; offset -= n; } /* request skip (if not zero) */ if (offset) { state->seek = 1; state->skip = offset; } return state->x.pos + offset; } /* -- see zlib.h -- */ z_off_t ZEXPORT gzseek(file, offset, whence) gzFile file; z_off_t offset; int whence; { z_off64_t ret; ret = gzseek64(file, (z_off64_t)offset, whence); return ret == (z_off_t)ret ? (z_off_t)ret : -1; } /* -- see zlib.h -- */ z_off64_t ZEXPORT gztell64(file) gzFile file; { gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return -1; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return -1; /* return position */ return state->x.pos + (state->seek ? state->skip : 0); } /* -- see zlib.h -- */ z_off_t ZEXPORT gztell(file) gzFile file; { z_off64_t ret; ret = gztell64(file); return ret == (z_off_t)ret ? (z_off_t)ret : -1; } /* -- see zlib.h -- */ z_off64_t ZEXPORT gzoffset64(file) gzFile file; { z_off64_t offset; gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return -1; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return -1; /* compute and return effective offset in file */ offset = LSEEK(state->fd, 0, SEEK_CUR); if (offset == -1) return -1; if (state->mode == GZ_READ) /* reading */ offset -= state->strm.avail_in; /* don't count buffered input */ return offset; } /* -- see zlib.h -- */ z_off_t ZEXPORT gzoffset(file) gzFile file; { z_off64_t ret; ret = gzoffset64(file); return ret == (z_off_t)ret ? (z_off_t)ret : -1; } /* -- see zlib.h -- */ int ZEXPORT gzeof(file) gzFile file; { gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return 0; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return 0; /* return end-of-file state */ return state->mode == GZ_READ ? state->past : 0; } /* -- see zlib.h -- */ const char * ZEXPORT gzerror(file, errnum) gzFile file; int *errnum; { gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return NULL; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return NULL; /* return error information */ if (errnum != NULL) *errnum = state->err; return state->err == Z_MEM_ERROR ? "out of memory" : (state->msg == NULL ? "" : state->msg); } /* -- see zlib.h -- */ void ZEXPORT gzclearerr(file) gzFile file; { gz_statep state; /* get internal structure and check integrity */ if (file == NULL) return; state = (gz_statep)file; if (state->mode != GZ_READ && state->mode != GZ_WRITE) return; /* clear error and end-of-file */ if (state->mode == GZ_READ) { state->eof = 0; state->past = 0; } gz_error(state, Z_OK, NULL); } /* Create an error message in allocated memory and set state->err and state->msg accordingly. Free any previous error message already there. Do not try to free or allocate space if the error is Z_MEM_ERROR (out of memory). Simply save the error message as a static string. If there is an allocation failure constructing the error message, then convert the error to out of memory. */ void ZLIB_INTERNAL gz_error(state, err, msg) gz_statep state; int err; const char *msg; { /* free previously allocated message and clear */ if (state->msg != NULL) { if (state->err != Z_MEM_ERROR) free(state->msg); state->msg = NULL; } /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */ if (err != Z_OK && err != Z_BUF_ERROR) state->x.have = 0; /* set error code, and if no message, then done */ state->err = err; if (msg == NULL) return; /* for an out of memory error, return literal string when requested */ if (err == Z_MEM_ERROR) return; /* construct error message with path */ if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) { state->err = Z_MEM_ERROR; return; } #if !defined(NO_snprintf) && !defined(NO_vsnprintf) (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3, "%s%s%s", state->path, ": ", msg); #else strcpy(state->msg, state->path); strcat(state->msg, ": "); strcat(state->msg, msg); #endif } #ifndef INT_MAX /* portably return maximum value for an int (when limits.h presumed not available) -- we need to do this to cover cases where 2's complement not used, since C standard permits 1's complement and sign-bit representations, otherwise we could just use ((unsigned)-1) >> 1 */ unsigned ZLIB_INTERNAL gz_intmax() { unsigned p, q; p = 1; do { q = p; p <<= 1; p++; } while (p > q); return q >> 1; } #endif zlib-1.2.11.dfsg/gzguts.h0000644000175000017500000001524313032130646015031 0ustar brooniebroonie/* gzguts.h -- zlib internal header definitions for gz* operations * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #ifdef _LARGEFILE64_SOURCE # ifndef _LARGEFILE_SOURCE # define _LARGEFILE_SOURCE 1 # endif # ifdef _FILE_OFFSET_BITS # undef _FILE_OFFSET_BITS # endif #endif #ifdef HAVE_HIDDEN # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) #else # define ZLIB_INTERNAL #endif #include #include "zlib.h" #ifdef STDC # include # include # include #endif #ifndef _POSIX_SOURCE # define _POSIX_SOURCE #endif #include #ifdef _WIN32 # include #endif #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32) # include #endif #if defined(_WIN32) || defined(__CYGWIN__) # define WIDECHAR #endif #ifdef WINAPI_FAMILY # define open _open # define read _read # define write _write # define close _close #endif #ifdef NO_DEFLATE /* for compatibility with old definition */ # define NO_GZCOMPRESS #endif #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) # ifndef HAVE_VSNPRINTF # define HAVE_VSNPRINTF # endif #endif #if defined(__CYGWIN__) # ifndef HAVE_VSNPRINTF # define HAVE_VSNPRINTF # endif #endif #if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410) # ifndef HAVE_VSNPRINTF # define HAVE_VSNPRINTF # endif #endif #ifndef HAVE_VSNPRINTF # ifdef MSDOS /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), but for now we just assume it doesn't. */ # define NO_vsnprintf # endif # ifdef __TURBOC__ # define NO_vsnprintf # endif # ifdef WIN32 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ # if !defined(vsnprintf) && !defined(NO_vsnprintf) # if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) # define vsnprintf _vsnprintf # endif # endif # endif # ifdef __SASC # define NO_vsnprintf # endif # ifdef VMS # define NO_vsnprintf # endif # ifdef __OS400__ # define NO_vsnprintf # endif # ifdef __MVS__ # define NO_vsnprintf # endif #endif /* unlike snprintf (which is required in C99), _snprintf does not guarantee null termination of the result -- however this is only used in gzlib.c where the result is assured to fit in the space provided */ #if defined(_MSC_VER) && _MSC_VER < 1900 # define snprintf _snprintf #endif #ifndef local # define local static #endif /* since "static" is used to mean two completely different things in C, we define "local" for the non-static meaning of "static", for readability (compile with -Dlocal if your debugger can't find static symbols) */ /* gz* functions always use library allocation functions */ #ifndef STDC extern voidp malloc OF((uInt size)); extern void free OF((voidpf ptr)); #endif /* get errno and strerror definition */ #if defined UNDER_CE # include # define zstrerror() gz_strwinerror((DWORD)GetLastError()) #else # ifndef NO_STRERROR # include # define zstrerror() strerror(errno) # else # define zstrerror() "stdio error (consult errno)" # endif #endif /* provide prototypes for these when building zlib without LFS */ #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); #endif /* default memLevel */ #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif /* default i/o buffer size -- double this for output when reading (this and twice this must be able to fit in an unsigned type) */ #define GZBUFSIZE 8192 /* gzip modes, also provide a little integrity check on the passed structure */ #define GZ_NONE 0 #define GZ_READ 7247 #define GZ_WRITE 31153 #define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */ /* values for gz_state how */ #define LOOK 0 /* look for a gzip header */ #define COPY 1 /* copy input directly */ #define GZIP 2 /* decompress a gzip stream */ /* internal gzip file state data structure */ typedef struct { /* exposed contents for gzgetc() macro */ struct gzFile_s x; /* "x" for exposed */ /* x.have: number of bytes available at x.next */ /* x.next: next output data to deliver or write */ /* x.pos: current position in uncompressed data */ /* used for both reading and writing */ int mode; /* see gzip modes above */ int fd; /* file descriptor */ char *path; /* path or fd for error messages */ unsigned size; /* buffer size, zero if not allocated yet */ unsigned want; /* requested buffer size, default is GZBUFSIZE */ unsigned char *in; /* input buffer (double-sized when writing) */ unsigned char *out; /* output buffer (double-sized when reading) */ int direct; /* 0 if processing gzip, 1 if transparent */ /* just for reading */ int how; /* 0: get header, 1: copy, 2: decompress */ z_off64_t start; /* where the gzip data started, for rewinding */ int eof; /* true if end of input file reached */ int past; /* true if read requested past end */ /* just for writing */ int level; /* compression level */ int strategy; /* compression strategy */ /* seek request */ z_off64_t skip; /* amount to skip (already rewound if backwards) */ int seek; /* true if seek request pending */ /* error information */ int err; /* error code */ char *msg; /* error message */ /* zlib inflate or deflate stream */ z_stream strm; /* stream structure in-place (not a pointer) */ } gz_state; typedef gz_state FAR *gz_statep; /* shared functions */ void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *)); #if defined UNDER_CE char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error)); #endif /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t value -- needed when comparing unsigned to z_off64_t, which is signed (possible z_off64_t types off_t, off64_t, and long are all signed) */ #ifdef INT_MAX # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) #else unsigned ZLIB_INTERNAL gz_intmax OF((void)); # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) #endif zlib-1.2.11.dfsg/inflate.h0000644000175000017500000001473213032130646015132 0ustar brooniebroonie/* inflate.h -- internal inflate state definition * Copyright (C) 1995-2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* WARNING: this file should *not* be used by applications. It is part of the implementation of the compression library and is subject to change. Applications should only use zlib.h. */ /* define NO_GZIP when compiling if you want to disable gzip header and trailer decoding by inflate(). NO_GZIP would be used to avoid linking in the crc code when it is not needed. For shared libraries, gzip decoding should be left enabled. */ #ifndef NO_GZIP # define GUNZIP #endif /* Possible inflate modes between inflate() calls */ typedef enum { HEAD = 16180, /* i: waiting for magic header */ FLAGS, /* i: waiting for method and flags (gzip) */ TIME, /* i: waiting for modification time (gzip) */ OS, /* i: waiting for extra flags and operating system (gzip) */ EXLEN, /* i: waiting for extra length (gzip) */ EXTRA, /* i: waiting for extra bytes (gzip) */ NAME, /* i: waiting for end of file name (gzip) */ COMMENT, /* i: waiting for end of comment (gzip) */ HCRC, /* i: waiting for header crc (gzip) */ DICTID, /* i: waiting for dictionary check value */ DICT, /* waiting for inflateSetDictionary() call */ TYPE, /* i: waiting for type bits, including last-flag bit */ TYPEDO, /* i: same, but skip check to exit inflate on new block */ STORED, /* i: waiting for stored size (length and complement) */ COPY_, /* i/o: same as COPY below, but only first time in */ COPY, /* i/o: waiting for input or output to copy stored block */ TABLE, /* i: waiting for dynamic block table lengths */ LENLENS, /* i: waiting for code length code lengths */ CODELENS, /* i: waiting for length/lit and distance code lengths */ LEN_, /* i: same as LEN below, but only first time in */ LEN, /* i: waiting for length/lit/eob code */ LENEXT, /* i: waiting for length extra bits */ DIST, /* i: waiting for distance code */ DISTEXT, /* i: waiting for distance extra bits */ MATCH, /* o: waiting for output space to copy string */ LIT, /* o: waiting for output space to write literal */ CHECK, /* i: waiting for 32-bit check value */ LENGTH, /* i: waiting for 32-bit length (gzip) */ DONE, /* finished check, done -- remain here until reset */ BAD, /* got a data error -- remain here until reset */ MEM, /* got an inflate() memory error -- remain here until reset */ SYNC /* looking for synchronization bytes to restart inflate() */ } inflate_mode; /* State transitions between above modes - (most modes can go to BAD or MEM on error -- not shown for clarity) Process header: HEAD -> (gzip) or (zlib) or (raw) (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT -> HCRC -> TYPE (zlib) -> DICTID or TYPE DICTID -> DICT -> TYPE (raw) -> TYPEDO Read deflate blocks: TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK STORED -> COPY_ -> COPY -> TYPE TABLE -> LENLENS -> CODELENS -> LEN_ LEN_ -> LEN Read deflate codes in fixed or dynamic block: LEN -> LENEXT or LIT or TYPE LENEXT -> DIST -> DISTEXT -> MATCH -> LEN LIT -> LEN Process trailer: CHECK -> LENGTH -> DONE */ /* State maintained between inflate() calls -- approximately 7K bytes, not including the allocated sliding window, which is up to 32K bytes. */ struct inflate_state { z_streamp strm; /* pointer back to this zlib stream */ inflate_mode mode; /* current inflate mode */ int last; /* true if processing last block */ int wrap; /* bit 0 true for zlib, bit 1 true for gzip, bit 2 true to validate check value */ int havedict; /* true if dictionary provided */ int flags; /* gzip header method and flags (0 if zlib) */ unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */ unsigned long check; /* protected copy of check value */ unsigned long total; /* protected copy of output count */ gz_headerp head; /* where to save gzip header information */ /* sliding window */ unsigned wbits; /* log base 2 of requested window size */ unsigned wsize; /* window size or zero if not using window */ unsigned whave; /* valid bytes in the window */ unsigned wnext; /* window write index */ unsigned char FAR *window; /* allocated sliding window, if needed */ /* bit accumulator */ unsigned long hold; /* input bit accumulator */ unsigned bits; /* number of bits in "in" */ /* for string and stored block copying */ unsigned length; /* literal or length of data to copy */ unsigned offset; /* distance back to copy string from */ /* for table and code decoding */ unsigned extra; /* extra bits needed */ /* fixed and dynamic code tables */ code const FAR *lencode; /* starting table for length/literal codes */ code const FAR *distcode; /* starting table for distance codes */ unsigned lenbits; /* index bits for lencode */ unsigned distbits; /* index bits for distcode */ /* dynamic table building */ unsigned ncode; /* number of code length code lengths */ unsigned nlen; /* number of length code lengths */ unsigned ndist; /* number of distance code lengths */ unsigned have; /* number of code lengths in lens[] */ code FAR *next; /* next available space in codes[] */ unsigned short lens[320]; /* temporary storage for code lengths */ unsigned short work[288]; /* work area for code table building */ code codes[ENOUGH]; /* space for code tables */ int sane; /* if false, allow invalid distance too far */ int back; /* bits back of last unprocessed length/lit */ unsigned was; /* initial length of match */ }; zlib-1.2.11.dfsg/ChangeLog0000644000175000017500000023133113036730604015111 0ustar brooniebroonie ChangeLog file for zlib Changes in 1.2.11 (15 Jan 2017) - Fix deflate stored bug when pulling last block from window - Permit immediate deflateParams changes before any deflate input Changes in 1.2.10 (2 Jan 2017) - Avoid warnings on snprintf() return value - Fix bug in deflate_stored() for zero-length input - Fix bug in gzwrite.c that produced corrupt gzip files - Remove files to be installed before copying them in Makefile.in - Add warnings when compiling with assembler code Changes in 1.2.9 (31 Dec 2016) - Fix contrib/minizip to permit unzipping with desktop API [Zouzou] - Improve contrib/blast to return unused bytes - Assure that gzoffset() is correct when appending - Improve compress() and uncompress() to support large lengths - Fix bug in test/example.c where error code not saved - Remedy Coverity warning [Randers-Pehrson] - Improve speed of gzprintf() in transparent mode - Fix inflateInit2() bug when windowBits is 16 or 32 - Change DEBUG macro to ZLIB_DEBUG - Avoid uninitialized access by gzclose_w() - Allow building zlib outside of the source directory - Fix bug that accepted invalid zlib header when windowBits is zero - Fix gzseek() problem on MinGW due to buggy _lseeki64 there - Loop on write() calls in gzwrite.c in case of non-blocking I/O - Add --warn (-w) option to ./configure for more compiler warnings - Reject a window size of 256 bytes if not using the zlib wrapper - Fix bug when level 0 used with Z_HUFFMAN or Z_RLE - Add --debug (-d) option to ./configure to define ZLIB_DEBUG - Fix bugs in creating a very large gzip header - Add uncompress2() function, which returns the input size used - Assure that deflateParams() will not switch functions mid-block - Dramatically speed up deflation for level 0 (storing) - Add gzfread(), duplicating the interface of fread() - Add gzfwrite(), duplicating the interface of fwrite() - Add deflateGetDictionary() function - Use snprintf() for later versions of Microsoft C - Fix *Init macros to use z_ prefix when requested - Replace as400 with os400 for OS/400 support [Monnerat] - Add crc32_z() and adler32_z() functions with size_t lengths - Update Visual Studio project files [AraHaan] Changes in 1.2.8 (28 Apr 2013) - Update contrib/minizip/iowin32.c for Windows RT [Vollant] - Do not force Z_CONST for C++ - Clean up contrib/vstudio [Roß] - Correct spelling error in zlib.h - Fix mixed line endings in contrib/vstudio Changes in 1.2.7.3 (13 Apr 2013) - Fix version numbers and DLL names in contrib/vstudio/*/zlib.rc Changes in 1.2.7.2 (13 Apr 2013) - Change check for a four-byte type back to hexadecimal - Fix typo in win32/Makefile.msc - Add casts in gzwrite.c for pointer differences Changes in 1.2.7.1 (24 Mar 2013) - Replace use of unsafe string functions with snprintf if available - Avoid including stddef.h on Windows for Z_SOLO compile [Niessink] - Fix gzgetc undefine when Z_PREFIX set [Turk] - Eliminate use of mktemp in Makefile (not always available) - Fix bug in 'F' mode for gzopen() - Add inflateGetDictionary() function - Correct comment in deflate.h - Use _snprintf for snprintf in Microsoft C - On Darwin, only use /usr/bin/libtool if libtool is not Apple - Delete "--version" file if created by "ar --version" [Richard G.] - Fix configure check for veracity of compiler error return codes - Fix CMake compilation of static lib for MSVC2010 x64 - Remove unused variable in infback9.c - Fix argument checks in gzlog_compress() and gzlog_write() - Clean up the usage of z_const and respect const usage within zlib - Clean up examples/gzlog.[ch] comparisons of different types - Avoid shift equal to bits in type (caused endless loop) - Fix uninitialized value bug in gzputc() introduced by const patches - Fix memory allocation error in examples/zran.c [Nor] - Fix bug where gzopen(), gzclose() would write an empty file - Fix bug in gzclose() when gzwrite() runs out of memory - Check for input buffer malloc failure in examples/gzappend.c - Add note to contrib/blast to use binary mode in stdio - Fix comparisons of differently signed integers in contrib/blast - Check for invalid code length codes in contrib/puff - Fix serious but very rare decompression bug in inftrees.c - Update inflateBack() comments, since inflate() can be faster - Use underscored I/O function names for WINAPI_FAMILY - Add _tr_flush_bits to the external symbols prefixed by --zprefix - Add contrib/vstudio/vc10 pre-build step for static only - Quote --version-script argument in CMakeLists.txt - Don't specify --version-script on Apple platforms in CMakeLists.txt - Fix casting error in contrib/testzlib/testzlib.c - Fix types in contrib/minizip to match result of get_crc_table() - Simplify contrib/vstudio/vc10 with 'd' suffix - Add TOP support to win32/Makefile.msc - Suport i686 and amd64 assembler builds in CMakeLists.txt - Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h - Add vc11 and vc12 build files to contrib/vstudio - Add gzvprintf() as an undocumented function in zlib - Fix configure for Sun shell - Remove runtime check in configure for four-byte integer type - Add casts and consts to ease user conversion to C++ - Add man pages for minizip and miniunzip - In Makefile uninstall, don't rm if preceding cd fails - Do not return Z_BUF_ERROR if deflateParam() has nothing to write Changes in 1.2.7 (2 May 2012) - Replace use of memmove() with a simple copy for portability - Test for existence of strerror - Restore gzgetc_ for backward compatibility with 1.2.6 - Fix build with non-GNU make on Solaris - Require gcc 4.0 or later on Mac OS X to use the hidden attribute - Include unistd.h for Watcom C - Use __WATCOMC__ instead of __WATCOM__ - Do not use the visibility attribute if NO_VIZ defined - Improve the detection of no hidden visibility attribute - Avoid using __int64 for gcc or solo compilation - Cast to char * in gzprintf to avoid warnings [Zinser] - Fix make_vms.com for VAX [Zinser] - Don't use library or built-in byte swaps - Simplify test and use of gcc hidden attribute - Fix bug in gzclose_w() when gzwrite() fails to allocate memory - Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen() - Fix bug in test/minigzip.c for configure --solo - Fix contrib/vstudio project link errors [Mohanathas] - Add ability to choose the builder in make_vms.com [Schweda] - Add DESTDIR support to mingw32 win32/Makefile.gcc - Fix comments in win32/Makefile.gcc for proper usage - Allow overriding the default install locations for cmake - Generate and install the pkg-config file with cmake - Build both a static and a shared version of zlib with cmake - Include version symbols for cmake builds - If using cmake with MSVC, add the source directory to the includes - Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta] - Move obsolete emx makefile to old [Truta] - Allow the use of -Wundef when compiling or using zlib - Avoid the use of the -u option with mktemp - Improve inflate() documentation on the use of Z_FINISH - Recognize clang as gcc - Add gzopen_w() in Windows for wide character path names - Rename zconf.h in CMakeLists.txt to move it out of the way - Add source directory in CMakeLists.txt for building examples - Look in build directory for zlib.pc in CMakeLists.txt - Remove gzflags from zlibvc.def in vc9 and vc10 - Fix contrib/minizip compilation in the MinGW environment - Update ./configure for Solaris, support --64 [Mooney] - Remove -R. from Solaris shared build (possible security issue) - Avoid race condition for parallel make (-j) running example - Fix type mismatch between get_crc_table() and crc_table - Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler] - Fix the path to zlib.map in CMakeLists.txt - Force the native libtool in Mac OS X to avoid GNU libtool [Beebe] - Add instructions to win32/Makefile.gcc for shared install [Torri] Changes in 1.2.6.1 (12 Feb 2012) - Avoid the use of the Objective-C reserved name "id" - Include io.h in gzguts.h for Microsoft compilers - Fix problem with ./configure --prefix and gzgetc macro - Include gz_header definition when compiling zlib solo - Put gzflags() functionality back in zutil.c - Avoid library header include in crc32.c for Z_SOLO - Use name in GCC_CLASSIC as C compiler for coverage testing, if set - Minor cleanup in contrib/minizip/zip.c [Vollant] - Update make_vms.com [Zinser] - Remove unnecessary gzgetc_ function - Use optimized byte swap operations for Microsoft and GNU [Snyder] - Fix minor typo in zlib.h comments [Rzesniowiecki] Changes in 1.2.6 (29 Jan 2012) - Update the Pascal interface in contrib/pascal - Fix function numbers for gzgetc_ in zlibvc.def files - Fix configure.ac for contrib/minizip [Schiffer] - Fix large-entry detection in minizip on 64-bit systems [Schiffer] - Have ./configure use the compiler return code for error indication - Fix CMakeLists.txt for cross compilation [McClure] - Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes] - Fix compilation of contrib/minizip on FreeBSD [Marquez] - Correct suggested usages in win32/Makefile.msc [Shachar, Horvath] - Include io.h for Turbo C / Borland C on all platforms [Truta] - Make version explicit in contrib/minizip/configure.ac [Bosmans] - Avoid warning for no encryption in contrib/minizip/zip.c [Vollant] - Minor cleanup up contrib/minizip/unzip.c [Vollant] - Fix bug when compiling minizip with C++ [Vollant] - Protect for long name and extra fields in contrib/minizip [Vollant] - Avoid some warnings in contrib/minizip [Vollant] - Add -I../.. -L../.. to CFLAGS for minizip and miniunzip - Add missing libs to minizip linker command - Add support for VPATH builds in contrib/minizip - Add an --enable-demos option to contrib/minizip/configure - Add the generation of configure.log by ./configure - Exit when required parameters not provided to win32/Makefile.gcc - Have gzputc return the character written instead of the argument - Use the -m option on ldconfig for BSD systems [Tobias] - Correct in zlib.map when deflateResetKeep was added Changes in 1.2.5.3 (15 Jan 2012) - Restore gzgetc function for binary compatibility - Do not use _lseeki64 under Borland C++ [Truta] - Update win32/Makefile.msc to build test/*.c [Truta] - Remove old/visualc6 given CMakefile and other alternatives - Update AS400 build files and documentation [Monnerat] - Update win32/Makefile.gcc to build test/*.c [Truta] - Permit stronger flushes after Z_BLOCK flushes - Avoid extraneous empty blocks when doing empty flushes - Permit Z_NULL arguments to deflatePending - Allow deflatePrime() to insert bits in the middle of a stream - Remove second empty static block for Z_PARTIAL_FLUSH - Write out all of the available bits when using Z_BLOCK - Insert the first two strings in the hash table after a flush Changes in 1.2.5.2 (17 Dec 2011) - fix ld error: unable to find version dependency 'ZLIB_1.2.5' - use relative symlinks for shared libs - Avoid searching past window for Z_RLE strategy - Assure that high-water mark initialization is always applied in deflate - Add assertions to fill_window() in deflate.c to match comments - Update python link in README - Correct spelling error in gzread.c - Fix bug in gzgets() for a concatenated empty gzip stream - Correct error in comment for gz_make() - Change gzread() and related to ignore junk after gzip streams - Allow gzread() and related to continue after gzclearerr() - Allow gzrewind() and gzseek() after a premature end-of-file - Simplify gzseek() now that raw after gzip is ignored - Change gzgetc() to a macro for speed (~40% speedup in testing) - Fix gzclose() to return the actual error last encountered - Always add large file support for windows - Include zconf.h for windows large file support - Include zconf.h.cmakein for windows large file support - Update zconf.h.cmakein on make distclean - Merge vestigial vsnprintf determination from zutil.h to gzguts.h - Clarify how gzopen() appends in zlib.h comments - Correct documentation of gzdirect() since junk at end now ignored - Add a transparent write mode to gzopen() when 'T' is in the mode - Update python link in zlib man page - Get inffixed.h and MAKEFIXED result to match - Add a ./config --solo option to make zlib subset with no library use - Add undocumented inflateResetKeep() function for CAB file decoding - Add --cover option to ./configure for gcc coverage testing - Add #define ZLIB_CONST option to use const in the z_stream interface - Add comment to gzdopen() in zlib.h to use dup() when using fileno() - Note behavior of uncompress() to provide as much data as it can - Add files in contrib/minizip to aid in building libminizip - Split off AR options in Makefile.in and configure - Change ON macro to Z_ARG to avoid application conflicts - Facilitate compilation with Borland C++ for pragmas and vsnprintf - Include io.h for Turbo C / Borland C++ - Move example.c and minigzip.c to test/ - Simplify incomplete code table filling in inflate_table() - Remove code from inflate.c and infback.c that is impossible to execute - Test the inflate code with full coverage - Allow deflateSetDictionary, inflateSetDictionary at any time (in raw) - Add deflateResetKeep and fix inflateResetKeep to retain dictionary - Fix gzwrite.c to accommodate reduced memory zlib compilation - Have inflate() with Z_FINISH avoid the allocation of a window - Do not set strm->adler when doing raw inflate - Fix gzeof() to behave just like feof() when read is not past end of file - Fix bug in gzread.c when end-of-file is reached - Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF - Document gzread() capability to read concurrently written files - Remove hard-coding of resource compiler in CMakeLists.txt [Blammo] Changes in 1.2.5.1 (10 Sep 2011) - Update FAQ entry on shared builds (#13) - Avoid symbolic argument to chmod in Makefile.in - Fix bug and add consts in contrib/puff [Oberhumer] - Update contrib/puff/zeros.raw test file to have all block types - Add full coverage test for puff in contrib/puff/Makefile - Fix static-only-build install in Makefile.in - Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno] - Add libz.a dependency to shared in Makefile.in for parallel builds - Spell out "number" (instead of "nb") in zlib.h for total_in, total_out - Replace $(...) with `...` in configure for non-bash sh [Bowler] - Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen] - Add solaris* to Linux* in configure to allow gcc use [Groffen] - Add *bsd* to Linux* case in configure [Bar-Lev] - Add inffast.obj to dependencies in win32/Makefile.msc - Correct spelling error in deflate.h [Kohler] - Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc - Add test to configure for GNU C looking for gcc in output of $cc -v - Add zlib.pc generation to win32/Makefile.gcc [Weigelt] - Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not - Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense - Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser) - Make stronger test in zconf.h to include unistd.h for LFS - Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack] - Fix zlib.h LFS support when Z_PREFIX used - Add updated as400 support (removed from old) [Monnerat] - Avoid deflate sensitivity to volatile input data - Avoid division in adler32_combine for NO_DIVIDE - Clarify the use of Z_FINISH with deflateBound() amount of space - Set binary for output file in puff.c - Use u4 type for crc_table to avoid conversion warnings - Apply casts in zlib.h to avoid conversion warnings - Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller] - Improve inflateSync() documentation to note indeterminancy - Add deflatePending() function to return the amount of pending output - Correct the spelling of "specification" in FAQ [Randers-Pehrson] - Add a check in configure for stdarg.h, use for gzprintf() - Check that pointers fit in ints when gzprint() compiled old style - Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler] - Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt] - Add debug records in assmebler code [Londer] - Update RFC references to use http://tools.ietf.org/html/... [Li] - Add --archs option, use of libtool to configure for Mac OS X [Borstel] Changes in 1.2.5 (19 Apr 2010) - Disable visibility attribute in win32/Makefile.gcc [Bar-Lev] - Default to libdir as sharedlibdir in configure [Nieder] - Update copyright dates on modified source files - Update trees.c to be able to generate modified trees.h - Exit configure for MinGW, suggesting win32/Makefile.gcc - Check for NULL path in gz_open [Homurlu] Changes in 1.2.4.5 (18 Apr 2010) - Set sharedlibdir in configure [Torok] - Set LDFLAGS in Makefile.in [Bar-Lev] - Avoid mkdir objs race condition in Makefile.in [Bowler] - Add ZLIB_INTERNAL in front of internal inter-module functions and arrays - Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C - Don't use hidden attribute when it is a warning generator (e.g. Solaris) Changes in 1.2.4.4 (18 Apr 2010) - Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok] - Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty - Try to use bash or ksh regardless of functionality of /bin/sh - Fix configure incompatibility with NetBSD sh - Remove attempt to run under bash or ksh since have better NetBSD fix - Fix win32/Makefile.gcc for MinGW [Bar-Lev] - Add diagnostic messages when using CROSS_PREFIX in configure - Added --sharedlibdir option to configure [Weigelt] - Use hidden visibility attribute when available [Frysinger] Changes in 1.2.4.3 (10 Apr 2010) - Only use CROSS_PREFIX in configure for ar and ranlib if they exist - Use CROSS_PREFIX for nm [Bar-Lev] - Assume _LARGEFILE64_SOURCE defined is equivalent to true - Avoid use of undefined symbols in #if with && and || - Make *64 prototypes in gzguts.h consistent with functions - Add -shared load option for MinGW in configure [Bowler] - Move z_off64_t to public interface, use instead of off64_t - Remove ! from shell test in configure (not portable to Solaris) - Change +0 macro tests to -0 for possibly increased portability Changes in 1.2.4.2 (9 Apr 2010) - Add consistent carriage returns to readme.txt's in masmx86 and masmx64 - Really provide prototypes for *64 functions when building without LFS - Only define unlink() in minigzip.c if unistd.h not included - Update README to point to contrib/vstudio project files - Move projects/vc6 to old/ and remove projects/ - Include stdlib.h in minigzip.c for setmode() definition under WinCE - Clean up assembler builds in win32/Makefile.msc [Rowe] - Include sys/types.h for Microsoft for off_t definition - Fix memory leak on error in gz_open() - Symbolize nm as $NM in configure [Weigelt] - Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt] - Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined - Fix bug in gzeof() to take into account unused input data - Avoid initialization of structures with variables in puff.c - Updated win32/README-WIN32.txt [Rowe] Changes in 1.2.4.1 (28 Mar 2010) - Remove the use of [a-z] constructs for sed in configure [gentoo 310225] - Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech] - Restore "for debugging" comment on sprintf() in gzlib.c - Remove fdopen for MVS from gzguts.h - Put new README-WIN32.txt in win32 [Rowe] - Add check for shell to configure and invoke another shell if needed - Fix big fat stinking bug in gzseek() on uncompressed files - Remove vestigial F_OPEN64 define in zutil.h - Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE - Avoid errors on non-LFS systems when applications define LFS macros - Set EXE to ".exe" in configure for MINGW [Kahle] - Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill] - Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev] - Add DLL install in win32/makefile.gcc [Bar-Lev] - Allow Linux* or linux* from uname in configure [Bar-Lev] - Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev] - Add cross-compilation prefixes to configure [Bar-Lev] - Match type exactly in gz_load() invocation in gzread.c - Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func - Provide prototypes for *64 functions when building zlib without LFS - Don't use -lc when linking shared library on MinGW - Remove errno.h check in configure and vestigial errno code in zutil.h Changes in 1.2.4 (14 Mar 2010) - Fix VER3 extraction in configure for no fourth subversion - Update zlib.3, add docs to Makefile.in to make .pdf out of it - Add zlib.3.pdf to distribution - Don't set error code in gzerror() if passed pointer is NULL - Apply destination directory fixes to CMakeLists.txt [Lowman] - Move #cmakedefine's to a new zconf.in.cmakein - Restore zconf.h for builds that don't use configure or cmake - Add distclean to dummy Makefile for convenience - Update and improve INDEX, README, and FAQ - Update CMakeLists.txt for the return of zconf.h [Lowman] - Update contrib/vstudio/vc9 and vc10 [Vollant] - Change libz.dll.a back to libzdll.a in win32/Makefile.gcc - Apply license and readme changes to contrib/asm686 [Raiter] - Check file name lengths and add -c option in minigzip.c [Li] - Update contrib/amd64 and contrib/masmx86/ [Vollant] - Avoid use of "eof" parameter in trees.c to not shadow library variable - Update make_vms.com for removal of zlibdefs.h [Zinser] - Update assembler code and vstudio projects in contrib [Vollant] - Remove outdated assembler code contrib/masm686 and contrib/asm586 - Remove old vc7 and vc8 from contrib/vstudio - Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe] - Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open() - Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant] - Remove *64 functions from win32/zlib.def (they're not 64-bit yet) - Fix bug in void-returning vsprintf() case in gzwrite.c - Fix name change from inflate.h in contrib/inflate86/inffas86.c - Check if temporary file exists before removing in make_vms.com [Zinser] - Fix make install and uninstall for --static option - Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta] - Update readme.txt in contrib/masmx64 and masmx86 to assemble Changes in 1.2.3.9 (21 Feb 2010) - Expunge gzio.c - Move as400 build information to old - Fix updates in contrib/minizip and contrib/vstudio - Add const to vsnprintf test in configure to avoid warnings [Weigelt] - Delete zconf.h (made by configure) [Weigelt] - Change zconf.in.h to zconf.h.in per convention [Weigelt] - Check for NULL buf in gzgets() - Return empty string for gzgets() with len == 1 (like fgets()) - Fix description of gzgets() in zlib.h for end-of-file, NULL return - Update minizip to 1.1 [Vollant] - Avoid MSVC loss of data warnings in gzread.c, gzwrite.c - Note in zlib.h that gzerror() should be used to distinguish from EOF - Remove use of snprintf() from gzlib.c - Fix bug in gzseek() - Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant] - Fix zconf.h generation in CMakeLists.txt [Lowman] - Improve comments in zconf.h where modified by configure Changes in 1.2.3.8 (13 Feb 2010) - Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer] - Use z_off64_t in gz_zero() and gz_skip() to match state->skip - Avoid comparison problem when sizeof(int) == sizeof(z_off64_t) - Revert to Makefile.in from 1.2.3.6 (live with the clutter) - Fix missing error return in gzflush(), add zlib.h note - Add *64 functions to zlib.map [Levin] - Fix signed/unsigned comparison in gz_comp() - Use SFLAGS when testing shared linking in configure - Add --64 option to ./configure to use -m64 with gcc - Fix ./configure --help to correctly name options - Have make fail if a test fails [Levin] - Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson] - Remove assembler object files from contrib Changes in 1.2.3.7 (24 Jan 2010) - Always gzopen() with O_LARGEFILE if available - Fix gzdirect() to work immediately after gzopen() or gzdopen() - Make gzdirect() more precise when the state changes while reading - Improve zlib.h documentation in many places - Catch memory allocation failure in gz_open() - Complete close operation if seek forward in gzclose_w() fails - Return Z_ERRNO from gzclose_r() if close() fails - Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL - Return zero for gzwrite() errors to match zlib.h description - Return -1 on gzputs() error to match zlib.h description - Add zconf.in.h to allow recovery from configure modification [Weigelt] - Fix static library permissions in Makefile.in [Weigelt] - Avoid warnings in configure tests that hide functionality [Weigelt] - Add *BSD and DragonFly to Linux case in configure [gentoo 123571] - Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212] - Avoid access of uninitialized data for first inflateReset2 call [Gomes] - Keep object files in subdirectories to reduce the clutter somewhat - Remove default Makefile and zlibdefs.h, add dummy Makefile - Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_ - Remove zlibdefs.h completely -- modify zconf.h instead Changes in 1.2.3.6 (17 Jan 2010) - Avoid void * arithmetic in gzread.c and gzwrite.c - Make compilers happier with const char * for gz_error message - Avoid unused parameter warning in inflate.c - Avoid signed-unsigned comparison warning in inflate.c - Indent #pragma's for traditional C - Fix usage of strwinerror() in glib.c, change to gz_strwinerror() - Correct email address in configure for system options - Update make_vms.com and add make_vms.com to contrib/minizip [Zinser] - Update zlib.map [Brown] - Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok] - Apply various fixes to CMakeLists.txt [Lowman] - Add checks on len in gzread() and gzwrite() - Add error message for no more room for gzungetc() - Remove zlib version check in gzwrite() - Defer compression of gzprintf() result until need to - Use snprintf() in gzdopen() if available - Remove USE_MMAP configuration determination (only used by minigzip) - Remove examples/pigz.c (available separately) - Update examples/gun.c to 1.6 Changes in 1.2.3.5 (8 Jan 2010) - Add space after #if in zutil.h for some compilers - Fix relatively harmless bug in deflate_fast() [Exarevsky] - Fix same problem in deflate_slow() - Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown] - Add deflate_rle() for faster Z_RLE strategy run-length encoding - Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding - Change name of "write" variable in inffast.c to avoid library collisions - Fix premature EOF from gzread() in gzio.c [Brown] - Use zlib header window size if windowBits is 0 in inflateInit2() - Remove compressBound() call in deflate.c to avoid linking compress.o - Replace use of errno in gz* with functions, support WinCE [Alves] - Provide alternative to perror() in minigzip.c for WinCE [Alves] - Don't use _vsnprintf on later versions of MSVC [Lowman] - Add CMake build script and input file [Lowman] - Update contrib/minizip to 1.1 [Svensson, Vollant] - Moved nintendods directory from contrib to . - Replace gzio.c with a new set of routines with the same functionality - Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above - Update contrib/minizip to 1.1b - Change gzeof() to return 0 on error instead of -1 to agree with zlib.h Changes in 1.2.3.4 (21 Dec 2009) - Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility - Update comments in configure and Makefile.in for default --shared - Fix test -z's in configure [Marquess] - Build examplesh and minigzipsh when not testing - Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h - Import LDFLAGS from the environment in configure - Fix configure to populate SFLAGS with discovered CFLAGS options - Adapt make_vms.com to the new Makefile.in [Zinser] - Add zlib2ansi script for C++ compilation [Marquess] - Add _FILE_OFFSET_BITS=64 test to make test (when applicable) - Add AMD64 assembler code for longest match to contrib [Teterin] - Include options from $SFLAGS when doing $LDSHARED - Simplify 64-bit file support by introducing z_off64_t type - Make shared object files in objs directory to work around old Sun cc - Use only three-part version number for Darwin shared compiles - Add rc option to ar in Makefile.in for when ./configure not run - Add -WI,-rpath,. to LDFLAGS for OSF 1 V4* - Set LD_LIBRARYN32_PATH for SGI IRIX shared compile - Protect against _FILE_OFFSET_BITS being defined when compiling zlib - Rename Makefile.in targets allstatic to static and allshared to shared - Fix static and shared Makefile.in targets to be independent - Correct error return bug in gz_open() by setting state [Brown] - Put spaces before ;;'s in configure for better sh compatibility - Add pigz.c (parallel implementation of gzip) to examples/ - Correct constant in crc32.c to UL [Leventhal] - Reject negative lengths in crc32_combine() - Add inflateReset2() function to work like inflateEnd()/inflateInit2() - Include sys/types.h for _LARGEFILE64_SOURCE [Brown] - Correct typo in doc/algorithm.txt [Janik] - Fix bug in adler32_combine() [Zhu] - Catch missing-end-of-block-code error in all inflates and in puff Assures that random input to inflate eventually results in an error - Added enough.c (calculation of ENOUGH for inftrees.h) to examples/ - Update ENOUGH and its usage to reflect discovered bounds - Fix gzerror() error report on empty input file [Brown] - Add ush casts in trees.c to avoid pedantic runtime errors - Fix typo in zlib.h uncompress() description [Reiss] - Correct inflate() comments with regard to automatic header detection - Remove deprecation comment on Z_PARTIAL_FLUSH (it stays) - Put new version of gzlog (2.0) in examples with interruption recovery - Add puff compile option to permit invalid distance-too-far streams - Add puff TEST command options, ability to read piped input - Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but _LARGEFILE64_SOURCE not defined - Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart - Fix deflateSetDictionary() to use all 32K for output consistency - Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h) - Clear bytes after deflate lookahead to avoid use of uninitialized data - Change a limit in inftrees.c to be more transparent to Coverity Prevent - Update win32/zlib.def with exported symbols from zlib.h - Correct spelling errors in zlib.h [Willem, Sobrado] - Allow Z_BLOCK for deflate() to force a new block - Allow negative bits in inflatePrime() to delete existing bit buffer - Add Z_TREES flush option to inflate() to return at end of trees - Add inflateMark() to return current state information for random access - Add Makefile for NintendoDS to contrib [Costa] - Add -w in configure compile tests to avoid spurious warnings [Beucler] - Fix typos in zlib.h comments for deflateSetDictionary() - Fix EOF detection in transparent gzread() [Maier] Changes in 1.2.3.3 (2 October 2006) - Make --shared the default for configure, add a --static option - Add compile option to permit invalid distance-too-far streams - Add inflateUndermine() function which is required to enable above - Remove use of "this" variable name for C++ compatibility [Marquess] - Add testing of shared library in make test, if shared library built - Use ftello() and fseeko() if available instead of ftell() and fseek() - Provide two versions of all functions that use the z_off_t type for binary compatibility -- a normal version and a 64-bit offset version, per the Large File Support Extension when _LARGEFILE64_SOURCE is defined; use the 64-bit versions by default when _FILE_OFFSET_BITS is defined to be 64 - Add a --uname= option to configure to perhaps help with cross-compiling Changes in 1.2.3.2 (3 September 2006) - Turn off silly Borland warnings [Hay] - Use off64_t and define _LARGEFILE64_SOURCE when present - Fix missing dependency on inffixed.h in Makefile.in - Rig configure --shared to build both shared and static [Teredesai, Truta] - Remove zconf.in.h and instead create a new zlibdefs.h file - Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant] - Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt] Changes in 1.2.3.1 (16 August 2006) - Add watcom directory with OpenWatcom make files [Daniel] - Remove #undef of FAR in zconf.in.h for MVS [Fedtke] - Update make_vms.com [Zinser] - Use -fPIC for shared build in configure [Teredesai, Nicholson] - Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen] - Use fdopen() (not _fdopen()) for Interix in zutil.h [Bäck] - Add some FAQ entries about the contrib directory - Update the MVS question in the FAQ - Avoid extraneous reads after EOF in gzio.c [Brown] - Correct spelling of "successfully" in gzio.c [Randers-Pehrson] - Add comments to zlib.h about gzerror() usage [Brown] - Set extra flags in gzip header in gzopen() like deflate() does - Make configure options more compatible with double-dash conventions [Weigelt] - Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen] - Fix uninstall target in Makefile.in [Truta] - Add pkgconfig support [Weigelt] - Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt] - Replace set_data_type() with a more accurate detect_data_type() in trees.c, according to the txtvsbin.txt document [Truta] - Swap the order of #include and #include "zlib.h" in gzio.c, example.c and minigzip.c [Truta] - Shut up annoying VS2005 warnings about standard C deprecation [Rowe, Truta] (where?) - Fix target "clean" from win32/Makefile.bor [Truta] - Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe] - Update zlib www home address in win32/DLL_FAQ.txt [Truta] - Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove] - Enable browse info in the "Debug" and "ASM Debug" configurations in the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta] - Add pkgconfig support [Weigelt] - Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h, for use in win32/zlib1.rc [Polushin, Rowe, Truta] - Add a document that explains the new text detection scheme to doc/txtvsbin.txt [Truta] - Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta] - Move algorithm.txt into doc/ [Truta] - Synchronize FAQ with website - Fix compressBound(), was low for some pathological cases [Fearnley] - Take into account wrapper variations in deflateBound() - Set examples/zpipe.c input and output to binary mode for Windows - Update examples/zlib_how.html with new zpipe.c (also web site) - Fix some warnings in examples/gzlog.c and examples/zran.c (it seems that gcc became pickier in 4.0) - Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain un-versioned, the patch adds versioning only for symbols introduced in zlib-1.2.0 or later. It also declares as local those symbols which are not designed to be exported." [Levin] - Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure - Do not initialize global static by default in trees.c, add a response NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess] - Don't use strerror() in gzio.c under WinCE [Yakimov] - Don't use errno.h in zutil.h under WinCE [Yakimov] - Move arguments for AR to its usage to allow replacing ar [Marot] - Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson] - Improve inflateInit() and inflateInit2() documentation - Fix structure size comment in inflate.h - Change configure help option from --h* to --help [Santos] Changes in 1.2.3 (18 July 2005) - Apply security vulnerability fixes to contrib/infback9 as well - Clean up some text files (carriage returns, trailing space) - Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant] Changes in 1.2.2.4 (11 July 2005) - Add inflatePrime() function for starting inflation at bit boundary - Avoid some Visual C warnings in deflate.c - Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit compile - Fix some spelling errors in comments [Betts] - Correct inflateInit2() error return documentation in zlib.h - Add zran.c example of compressed data random access to examples directory, shows use of inflatePrime() - Fix cast for assignments to strm->state in inflate.c and infback.c - Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer] - Move declarations of gf2 functions to right place in crc32.c [Oberhumer] - Add cast in trees.c t avoid a warning [Oberhumer] - Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer] - Update make_vms.com [Zinser] - Initialize state->write in inflateReset() since copied in inflate_fast() - Be more strict on incomplete code sets in inflate_table() and increase ENOUGH and MAXD -- this repairs a possible security vulnerability for invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for discovering the vulnerability and providing test cases. - Add ia64 support to configure for HP-UX [Smith] - Add error return to gzread() for format or i/o error [Levin] - Use malloc.h for OS/2 [Necasek] Changes in 1.2.2.3 (27 May 2005) - Replace 1U constants in inflate.c and inftrees.c for 64-bit compile - Typecast fread() return values in gzio.c [Vollant] - Remove trailing space in minigzip.c outmode (VC++ can't deal with it) - Fix crc check bug in gzread() after gzungetc() [Heiner] - Add the deflateTune() function to adjust internal compression parameters - Add a fast gzip decompressor, gun.c, to examples (use of inflateBack) - Remove an incorrect assertion in examples/zpipe.c - Add C++ wrapper in infback9.h [Donais] - Fix bug in inflateCopy() when decoding fixed codes - Note in zlib.h how much deflateSetDictionary() actually uses - Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used) - Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer] - Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer] - Add gzdirect() function to indicate transparent reads - Update contrib/minizip [Vollant] - Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer] - Add casts in crc32.c to avoid warnings [Oberhumer] - Add contrib/masmx64 [Vollant] - Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant] Changes in 1.2.2.2 (30 December 2004) - Replace structure assignments in deflate.c and inflate.c with zmemcpy to avoid implicit memcpy calls (portability for no-library compilation) - Increase sprintf() buffer size in gzdopen() to allow for large numbers - Add INFLATE_STRICT to check distances against zlib header - Improve WinCE errno handling and comments [Chang] - Remove comment about no gzip header processing in FAQ - Add Z_FIXED strategy option to deflateInit2() to force fixed trees - Add updated make_vms.com [Coghlan], update README - Create a new "examples" directory, move gzappend.c there, add zpipe.c, fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html. - Add FAQ entry and comments in deflate.c on uninitialized memory access - Add Solaris 9 make options in configure [Gilbert] - Allow strerror() usage in gzio.c for STDC - Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer] - Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant] - Use z_off_t for adler32_combine() and crc32_combine() lengths - Make adler32() much faster for small len - Use OS_CODE in deflate() default gzip header Changes in 1.2.2.1 (31 October 2004) - Allow inflateSetDictionary() call for raw inflate - Fix inflate header crc check bug for file names and comments - Add deflateSetHeader() and gz_header structure for custom gzip headers - Add inflateGetheader() to retrieve gzip headers - Add crc32_combine() and adler32_combine() functions - Add alloc_func, free_func, in_func, out_func to Z_PREFIX list - Use zstreamp consistently in zlib.h (inflate_back functions) - Remove GUNZIP condition from definition of inflate_mode in inflate.h and in contrib/inflate86/inffast.S [Truta, Anderson] - Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson] - Update projects/README.projects and projects/visualc6 [Truta] - Update win32/DLL_FAQ.txt [Truta] - Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta] - Deprecate Z_ASCII; use Z_TEXT instead [Truta] - Use a new algorithm for setting strm->data_type in trees.c [Truta] - Do not define an exit() prototype in zutil.c unless DEBUG defined - Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta] - Add comment in zlib.h for Z_NO_FLUSH parameter to deflate() - Fix Darwin build version identification [Peterson] Changes in 1.2.2 (3 October 2004) - Update zlib.h comments on gzip in-memory processing - Set adler to 1 in inflateReset() to support Java test suite [Walles] - Add contrib/dotzlib [Ravn] - Update win32/DLL_FAQ.txt [Truta] - Update contrib/minizip [Vollant] - Move contrib/visual-basic.txt to old/ [Truta] - Fix assembler builds in projects/visualc6/ [Truta] Changes in 1.2.1.2 (9 September 2004) - Update INDEX file - Fix trees.c to update strm->data_type (no one ever noticed!) - Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown] - Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE) - Add limited multitasking protection to DYNAMIC_CRC_TABLE - Add NO_vsnprintf for VMS in zutil.h [Mozilla] - Don't declare strerror() under VMS [Mozilla] - Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize - Update contrib/ada [Anisimkov] - Update contrib/minizip [Vollant] - Fix configure to not hardcode directories for Darwin [Peterson] - Fix gzio.c to not return error on empty files [Brown] - Fix indentation; update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas [Truta] - Update mkasm.bat in contrib/masmx86 [Truta] - Update contrib/untgz [Truta] - Add projects/README.projects [Truta] - Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta] - Update win32/DLL_FAQ.txt [Truta] - Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta] - Remove an unnecessary assignment to curr in inftrees.c [Truta] - Add OS/2 to exe builds in configure [Poltorak] - Remove err dummy parameter in zlib.h [Kientzle] Changes in 1.2.1.1 (9 January 2004) - Update email address in README - Several FAQ updates - Fix a big fat bug in inftrees.c that prevented decoding valid dynamic blocks with only literals and no distance codes -- Thanks to "Hot Emu" for the bug report and sample file - Add a note to puff.c on no distance codes case. Changes in 1.2.1 (17 November 2003) - Remove a tab in contrib/gzappend/gzappend.c - Update some interfaces in contrib for new zlib functions - Update zlib version number in some contrib entries - Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta] - Support shared libraries on Hurd and KFreeBSD [Brown] - Fix error in NO_DIVIDE option of adler32.c Changes in 1.2.0.8 (4 November 2003) - Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas - Add experimental NO_DIVIDE #define in adler32.c - Possibly faster on some processors (let me know if it is) - Correct Z_BLOCK to not return on first inflate call if no wrap - Fix strm->data_type on inflate() return to correctly indicate EOB - Add deflatePrime() function for appending in the middle of a byte - Add contrib/gzappend for an example of appending to a stream - Update win32/DLL_FAQ.txt [Truta] - Delete Turbo C comment in README [Truta] - Improve some indentation in zconf.h [Truta] - Fix infinite loop on bad input in configure script [Church] - Fix gzeof() for concatenated gzip files [Johnson] - Add example to contrib/visual-basic.txt [Michael B.] - Add -p to mkdir's in Makefile.in [vda] - Fix configure to properly detect presence or lack of printf functions - Add AS400 support [Monnerat] - Add a little Cygwin support [Wilson] Changes in 1.2.0.7 (21 September 2003) - Correct some debug formats in contrib/infback9 - Cast a type in a debug statement in trees.c - Change search and replace delimiter in configure from % to # [Beebe] - Update contrib/untgz to 0.2 with various fixes [Truta] - Add build support for Amiga [Nikl] - Remove some directories in old that have been updated to 1.2 - Add dylib building for Mac OS X in configure and Makefile.in - Remove old distribution stuff from Makefile - Update README to point to DLL_FAQ.txt, and add comment on Mac OS X - Update links in README Changes in 1.2.0.6 (13 September 2003) - Minor FAQ updates - Update contrib/minizip to 1.00 [Vollant] - Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta] - Update POSTINC comment for 68060 [Nikl] - Add contrib/infback9 with deflate64 decoding (unsupported) - For MVS define NO_vsnprintf and undefine FAR [van Burik] - Add pragma for fdopen on MVS [van Burik] Changes in 1.2.0.5 (8 September 2003) - Add OF to inflateBackEnd() declaration in zlib.h - Remember start when using gzdopen in the middle of a file - Use internal off_t counters in gz* functions to properly handle seeks - Perform more rigorous check for distance-too-far in inffast.c - Add Z_BLOCK flush option to return from inflate at block boundary - Set strm->data_type on return from inflate - Indicate bits unused, if at block boundary, and if in last block - Replace size_t with ptrdiff_t in crc32.c, and check for correct size - Add condition so old NO_DEFLATE define still works for compatibility - FAQ update regarding the Windows DLL [Truta] - INDEX update: add qnx entry, remove aix entry [Truta] - Install zlib.3 into mandir [Wilson] - Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta] - Adapt the zlib interface to the new DLL convention guidelines [Truta] - Introduce ZLIB_WINAPI macro to allow the export of functions using the WINAPI calling convention, for Visual Basic [Vollant, Truta] - Update msdos and win32 scripts and makefiles [Truta] - Export symbols by name, not by ordinal, in win32/zlib.def [Truta] - Add contrib/ada [Anisimkov] - Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta] - Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant] - Add contrib/masm686 [Truta] - Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm [Truta, Vollant] - Update contrib/delphi; rename to contrib/pascal; add example [Truta] - Remove contrib/delphi2; add a new contrib/delphi [Truta] - Avoid inclusion of the nonstandard in contrib/iostream, and fix some method prototypes [Truta] - Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip [Truta] - Avoid the use of backslash (\) in contrib/minizip [Vollant] - Fix file time handling in contrib/untgz; update makefiles [Truta] - Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines [Vollant] - Remove contrib/vstudio/vc15_16 [Vollant] - Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta] - Update README.contrib [Truta] - Invert the assignment order of match_head and s->prev[...] in INSERT_STRING [Truta] - Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings [Truta] - Compare function pointers with 0, not with NULL or Z_NULL [Truta] - Fix prototype of syncsearch in inflate.c [Truta] - Introduce ASMINF macro to be enabled when using an ASM implementation of inflate_fast [Truta] - Change NO_DEFLATE to NO_GZCOMPRESS [Truta] - Modify test_gzio in example.c to take a single file name as a parameter [Truta] - Exit the example.c program if gzopen fails [Truta] - Add type casts around strlen in example.c [Truta] - Remove casting to sizeof in minigzip.c; give a proper type to the variable compared with SUFFIX_LEN [Truta] - Update definitions of STDC and STDC99 in zconf.h [Truta] - Synchronize zconf.h with the new Windows DLL interface [Truta] - Use SYS16BIT instead of __32BIT__ to distinguish between 16- and 32-bit platforms [Truta] - Use far memory allocators in small 16-bit memory models for Turbo C [Truta] - Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in zlibCompileFlags [Truta] - Cygwin has vsnprintf [Wilson] - In Windows16, OS_CODE is 0, as in MSDOS [Truta] - In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson] Changes in 1.2.0.4 (10 August 2003) - Minor FAQ updates - Be more strict when checking inflateInit2's windowBits parameter - Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well - Add gzip wrapper option to deflateInit2 using windowBits - Add updated QNX rule in configure and qnx directory [Bonnefoy] - Make inflate distance-too-far checks more rigorous - Clean up FAR usage in inflate - Add casting to sizeof() in gzio.c and minigzip.c Changes in 1.2.0.3 (19 July 2003) - Fix silly error in gzungetc() implementation [Vollant] - Update contrib/minizip and contrib/vstudio [Vollant] - Fix printf format in example.c - Correct cdecl support in zconf.in.h [Anisimkov] - Minor FAQ updates Changes in 1.2.0.2 (13 July 2003) - Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons - Attempt to avoid warnings in crc32.c for pointer-int conversion - Add AIX to configure, remove aix directory [Bakker] - Add some casts to minigzip.c - Improve checking after insecure sprintf() or vsprintf() calls - Remove #elif's from crc32.c - Change leave label to inf_leave in inflate.c and infback.c to avoid library conflicts - Remove inflate gzip decoding by default--only enable gzip decoding by special request for stricter backward compatibility - Add zlibCompileFlags() function to return compilation information - More typecasting in deflate.c to avoid warnings - Remove leading underscore from _Capital #defines [Truta] - Fix configure to link shared library when testing - Add some Windows CE target adjustments [Mai] - Remove #define ZLIB_DLL in zconf.h [Vollant] - Add zlib.3 [Rodgers] - Update RFC URL in deflate.c and algorithm.txt [Mai] - Add zlib_dll_FAQ.txt to contrib [Truta] - Add UL to some constants [Truta] - Update minizip and vstudio [Vollant] - Remove vestigial NEED_DUMMY_RETURN from zconf.in.h - Expand use of NO_DUMMY_DECL to avoid all dummy structures - Added iostream3 to contrib [Schwardt] - Replace rewind() with fseek() for WinCE [Truta] - Improve setting of zlib format compression level flags - Report 0 for huffman and rle strategies and for level == 0 or 1 - Report 2 only for level == 6 - Only deal with 64K limit when necessary at compile time [Truta] - Allow TOO_FAR check to be turned off at compile time [Truta] - Add gzclearerr() function [Souza] - Add gzungetc() function Changes in 1.2.0.1 (17 March 2003) - Add Z_RLE strategy for run-length encoding [Truta] - When Z_RLE requested, restrict matches to distance one - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE - Correct FASTEST compilation to allow level == 0 - Clean up what gets compiled for FASTEST - Incorporate changes to zconf.in.h [Vollant] - Refine detection of Turbo C need for dummy returns - Refine ZLIB_DLL compilation - Include additional header file on VMS for off_t typedef - Try to use _vsnprintf where it supplants vsprintf [Vollant] - Add some casts in inffast.c - Enchance comments in zlib.h on what happens if gzprintf() tries to write more than 4095 bytes before compression - Remove unused state from inflateBackEnd() - Remove exit(0) from minigzip.c, example.c - Get rid of all those darn tabs - Add "check" target to Makefile.in that does the same thing as "test" - Add "mostlyclean" and "maintainer-clean" targets to Makefile.in - Update contrib/inflate86 [Anderson] - Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant] - Add msdos and win32 directories with makefiles [Truta] - More additions and improvements to the FAQ Changes in 1.2.0 (9 March 2003) - New and improved inflate code - About 20% faster - Does not allocate 32K window unless and until needed - Automatically detects and decompresses gzip streams - Raw inflate no longer needs an extra dummy byte at end - Added inflateBack functions using a callback interface--even faster than inflate, useful for file utilities (gzip, zip) - Added inflateCopy() function to record state for random access on externally generated deflate streams (e.g. in gzip files) - More readable code (I hope) - New and improved crc32() - About 50% faster, thanks to suggestions from Rodney Brown - Add deflateBound() and compressBound() functions - Fix memory leak in deflateInit2() - Permit setting dictionary for raw deflate (for parallel deflate) - Fix const declaration for gzwrite() - Check for some malloc() failures in gzio.c - Fix bug in gzopen() on single-byte file 0x1f - Fix bug in gzread() on concatenated file with 0x1f at end of buffer and next buffer doesn't start with 0x8b - Fix uncompress() to return Z_DATA_ERROR on truncated input - Free memory at end of example.c - Remove MAX #define in trees.c (conflicted with some libraries) - Fix static const's in deflate.c, gzio.c, and zutil.[ch] - Declare malloc() and free() in gzio.c if STDC not defined - Use malloc() instead of calloc() in zutil.c if int big enough - Define STDC for AIX - Add aix/ with approach for compiling shared library on AIX - Add HP-UX support for shared libraries in configure - Add OpenUNIX support for shared libraries in configure - Use $cc instead of gcc to build shared library - Make prefix directory if needed when installing - Correct Macintosh avoidance of typedef Byte in zconf.h - Correct Turbo C memory allocation when under Linux - Use libz.a instead of -lz in Makefile (assure use of compiled library) - Update configure to check for snprintf or vsnprintf functions and their return value, warn during make if using an insecure function - Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that is lost when library is used--resolution is to build new zconf.h - Documentation improvements (in zlib.h): - Document raw deflate and inflate - Update RFCs URL - Point out that zlib and gzip formats are different - Note that Z_BUF_ERROR is not fatal - Document string limit for gzprintf() and possible buffer overflow - Note requirement on avail_out when flushing - Note permitted values of flush parameter of inflate() - Add some FAQs (and even answers) to the FAQ - Add contrib/inflate86/ for x86 faster inflate - Add contrib/blast/ for PKWare Data Compression Library decompression - Add contrib/puff/ simple inflate for deflate format description Changes in 1.1.4 (11 March 2002) - ZFREE was repeated on same allocation on some error conditions. This creates a security problem described in http://www.zlib.org/advisory-2002-03-11.txt - Returned incorrect error (Z_MEM_ERROR) on some invalid data - Avoid accesses before window for invalid distances with inflate window less than 32K. - force windowBits > 8 to avoid a bug in the encoder for a window size of 256 bytes. (A complete fix will be available in 1.1.5). Changes in 1.1.3 (9 July 1998) - fix "an inflate input buffer bug that shows up on rare but persistent occasions" (Mark) - fix gzread and gztell for concatenated .gz files (Didier Le Botlan) - fix gzseek(..., SEEK_SET) in write mode - fix crc check after a gzeek (Frank Faubert) - fix miniunzip when the last entry in a zip file is itself a zip file (J Lillge) - add contrib/asm586 and contrib/asm686 (Brian Raiter) See http://www.muppetlabs.com/~breadbox/software/assembly.html - add support for Delphi 3 in contrib/delphi (Bob Dellaca) - add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti) - do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren) - use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks) - added a FAQ file - Support gzdopen on Mac with Metrowerks (Jason Linhart) - Do not redefine Byte on Mac (Brad Pettit & Jason Linhart) - define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young) - avoid some warnings with Borland C (Tom Tanner) - fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant) - emulate utime() for WIN32 in contrib/untgz (Gilles Vollant) - allow several arguments to configure (Tim Mooney, Frodo Looijaard) - use libdir and includedir in Makefile.in (Tim Mooney) - support shared libraries on OSF1 V4 (Tim Mooney) - remove so_locations in "make clean" (Tim Mooney) - fix maketree.c compilation error (Glenn, Mark) - Python interface to zlib now in Python 1.5 (Jeremy Hylton) - new Makefile.riscos (Rich Walker) - initialize static descriptors in trees.c for embedded targets (Nick Smith) - use "foo-gz" in example.c for RISCOS and VMS (Nick Smith) - add the OS/2 files in Makefile.in too (Andrew Zabolotny) - fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane) - fix maketree.c to allow clean compilation of inffixed.h (Mark) - fix parameter check in deflateCopy (Gunther Nikl) - cleanup trees.c, use compressed_len only in debug mode (Christian Spieler) - Many portability patches by Christian Spieler: . zutil.c, zutil.h: added "const" for zmem* . Make_vms.com: fixed some typos . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists . msdos/Makefile.msc: remove "default rtl link library" info from obj files . msdos/Makefile.*: use model-dependent name for the built zlib library . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc: new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT) - use define instead of typedef for Bytef also for MSC small/medium (Tom Lane) - replace __far with _far for better portability (Christian Spieler, Tom Lane) - fix test for errno.h in configure (Tim Newsham) Changes in 1.1.2 (19 March 98) - added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant) See http://www.winimage.com/zLibDll/unzip.html - preinitialize the inflate tables for fixed codes, to make the code completely thread safe (Mark) - some simplifications and slight speed-up to the inflate code (Mark) - fix gzeof on non-compressed files (Allan Schrum) - add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs) - use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn) - added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny) - add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori) - do not wrap extern "C" around system includes (Tom Lane) - mention zlib binding for TCL in README (Andreas Kupries) - added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert) - allow "make install prefix=..." even after configure (Glenn Randers-Pehrson) - allow "configure --prefix $HOME" (Tim Mooney) - remove warnings in example.c and gzio.c (Glenn Randers-Pehrson) - move Makefile.sas to amiga/Makefile.sas Changes in 1.1.1 (27 Feb 98) - fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson) - remove block truncation heuristic which had very marginal effect for zlib (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the compression ratio on some files. This also allows inlining _tr_tally for matches in deflate_slow. - added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier) Changes in 1.1.0 (24 Feb 98) - do not return STREAM_END prematurely in inflate (John Bowler) - revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler) - compile with -DFASTEST to get compression code optimized for speed only - in minigzip, try mmap'ing the input file first (Miguel Albrecht) - increase size of I/O buffers in minigzip.c and gzio.c (not a big gain on Sun but significant on HP) - add a pointer to experimental unzip library in README (Gilles Vollant) - initialize variable gcc in configure (Chris Herborth) Changes in 1.0.9 (17 Feb 1998) - added gzputs and gzgets functions - do not clear eof flag in gzseek (Mark Diekhans) - fix gzseek for files in transparent mode (Mark Diekhans) - do not assume that vsprintf returns the number of bytes written (Jens Krinke) - replace EXPORT with ZEXPORT to avoid conflict with other programs - added compress2 in zconf.h, zlib.def, zlib.dnt - new asm code from Gilles Vollant in contrib/asm386 - simplify the inflate code (Mark): . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new() . ZALLOC the length list in inflate_trees_fixed() instead of using stack . ZALLOC the value area for huft_build() instead of using stack . Simplify Z_FINISH check in inflate() - Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8 - in inftrees.c, avoid cc -O bug on HP (Farshid Elahi) - in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with the declaration of FAR (Gilles VOllant) - install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann) - read_buf buf parameter of type Bytef* instead of charf* - zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout) - do not redeclare unlink in minigzip.c for WIN32 (John Bowler) - fix check for presence of directories in "make install" (Ian Willis) Changes in 1.0.8 (27 Jan 1998) - fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant) - fix gzgetc and gzputc for big endian systems (Markus Oberhumer) - added compress2() to allow setting the compression level - include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong) - use constant arrays for the static trees in trees.c instead of computing them at run time (thanks to Ken Raeburn for this suggestion). To create trees.h, compile with GEN_TREES_H and run "make test". - check return code of example in "make test" and display result - pass minigzip command line options to file_compress - simplifying code of inflateSync to avoid gcc 2.8 bug - support CC="gcc -Wall" in configure -s (QingLong) - avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn) - fix test for shared library support to avoid compiler warnings - zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant) - check for TARGET_OS_MAC in addition to MACOS (Brad Pettit) - do not use fdopen for Metrowerks on Mac (Brad Pettit)) - add checks for gzputc and gzputc in example.c - avoid warnings in gzio.c and deflate.c (Andreas Kleinert) - use const for the CRC table (Ken Raeburn) - fixed "make uninstall" for shared libraries - use Tracev instead of Trace in infblock.c - in example.c use correct compressed length for test_sync - suppress +vnocompatwarnings in configure for HPUX (not always supported) Changes in 1.0.7 (20 Jan 1998) - fix gzseek which was broken in write mode - return error for gzseek to negative absolute position - fix configure for Linux (Chun-Chung Chen) - increase stack space for MSC (Tim Wegner) - get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant) - define EXPORTVA for gzprintf (Gilles Vollant) - added man page zlib.3 (Rick Rodgers) - for contrib/untgz, fix makedir() and improve Makefile - check gzseek in write mode in example.c - allocate extra buffer for seeks only if gzseek is actually called - avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant) - add inflateSyncPoint in zconf.h - fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def Changes in 1.0.6 (19 Jan 1998) - add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code) - Fix a deflate bug occurring only with compression level 0 (thanks to Andy Buckler for finding this one). - In minigzip, pass transparently also the first byte for .Z files. - return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress() - check Z_FINISH in inflate (thanks to Marc Schluper) - Implement deflateCopy (thanks to Adam Costello) - make static libraries by default in configure, add --shared option. - move MSDOS or Windows specific files to directory msdos - suppress the notion of partial flush to simplify the interface (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4) - suppress history buffer provided by application to simplify the interface (this feature was not implemented anyway in 1.0.4) - next_in and avail_in must be initialized before calling inflateInit or inflateInit2 - add EXPORT in all exported functions (for Windows DLL) - added Makefile.nt (thanks to Stephen Williams) - added the unsupported "contrib" directory: contrib/asm386/ by Gilles Vollant 386 asm code replacing longest_match(). contrib/iostream/ by Kevin Ruland A C++ I/O streams interface to the zlib gz* functions contrib/iostream2/ by Tyge Løvset Another C++ I/O streams interface contrib/untgz/ by "Pedro A. Aranda Guti\irrez" A very simple tar.gz file extractor using zlib contrib/visual-basic.txt by Carlos Rios How to use compress(), uncompress() and the gz* functions from VB. - pass params -f (filtered data), -h (huffman only), -1 to -9 (compression level) in minigzip (thanks to Tom Lane) - use const for rommable constants in deflate - added test for gzseek and gztell in example.c - add undocumented function inflateSyncPoint() (hack for Paul Mackerras) - add undocumented function zError to convert error code to string (for Tim Smithers) - Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code. - Use default memcpy for Symantec MSDOS compiler. - Add EXPORT keyword for check_func (needed for Windows DLL) - add current directory to LD_LIBRARY_PATH for "make test" - create also a link for libz.so.1 - added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura) - use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX) - added -soname for Linux in configure (Chun-Chung Chen, - assign numbers to the exported functions in zlib.def (for Windows DLL) - add advice in zlib.h for best usage of deflateSetDictionary - work around compiler bug on Atari (cast Z_NULL in call of s->checkfn) - allow compilation with ANSI keywords only enabled for TurboC in large model - avoid "versionString"[0] (Borland bug) - add NEED_DUMMY_RETURN for Borland - use variable z_verbose for tracing in debug mode (L. Peter Deutsch). - allow compilation with CC - defined STDC for OS/2 (David Charlap) - limit external names to 8 chars for MVS (Thomas Lund) - in minigzip.c, use static buffers only for 16-bit systems - fix suffix check for "minigzip -d foo.gz" - do not return an error for the 2nd of two consecutive gzflush() (Felix Lee) - use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau) - added makelcc.bat for lcc-win32 (Tom St Denis) - in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe) - Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion. - check for unistd.h in configure (for off_t) - remove useless check parameter in inflate_blocks_free - avoid useless assignment of s->check to itself in inflate_blocks_new - do not flush twice in gzclose (thanks to Ken Raeburn) - rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h - use NO_ERRNO_H instead of enumeration of operating systems with errno.h - work around buggy fclose on pipes for HP/UX - support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson) - fix configure if CC is already equal to gcc Changes in 1.0.5 (3 Jan 98) - Fix inflate to terminate gracefully when fed corrupted or invalid data - Use const for rommable constants in inflate - Eliminate memory leaks on error conditions in inflate - Removed some vestigial code in inflate - Update web address in README Changes in 1.0.4 (24 Jul 96) - In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF bit, so the decompressor could decompress all the correct data but went on to attempt decompressing extra garbage data. This affected minigzip too. - zlibVersion and gzerror return const char* (needed for DLL) - port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno) - use z_error only for DEBUG (avoid problem with DLLs) Changes in 1.0.3 (2 Jul 96) - use z_streamp instead of z_stream *, which is now a far pointer in MSDOS small and medium models; this makes the library incompatible with previous versions for these models. (No effect in large model or on other systems.) - return OK instead of BUF_ERROR if previous deflate call returned with avail_out as zero but there is nothing to do - added memcmp for non STDC compilers - define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly) - define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO) - better check for 16-bit mode MSC (avoids problem with Symantec) Changes in 1.0.2 (23 May 96) - added Windows DLL support - added a function zlibVersion (for the DLL support) - fixed declarations using Bytef in infutil.c (pb with MSDOS medium model) - Bytef is define's instead of typedef'd only for Borland C - avoid reading uninitialized memory in example.c - mention in README that the zlib format is now RFC1950 - updated Makefile.dj2 - added algorithm.doc Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion] - fix array overlay in deflate.c which sometimes caused bad compressed data - fix inflate bug with empty stored block - fix MSDOS medium model which was broken in 0.99 - fix deflateParams() which could generate bad compressed data. - Bytef is define'd instead of typedef'ed (work around Borland bug) - added an INDEX file - new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32), Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas) - speed up adler32 for modern machines without auto-increment - added -ansi for IRIX in configure - static_init_done in trees.c is an int - define unlink as delete for VMS - fix configure for QNX - add configure branch for SCO and HPUX - avoid many warnings (unused variables, dead assignments, etc...) - no fdopen for BeOS - fix the Watcom fix for 32 bit mode (define FAR as empty) - removed redefinition of Byte for MKWERKS - work around an MWKERKS bug (incorrect merge of all .h files) Changes in 0.99 (27 Jan 96) - allow preset dictionary shared between compressor and decompressor - allow compression level 0 (no compression) - add deflateParams in zlib.h: allow dynamic change of compression level and compression strategy. - test large buffers and deflateParams in example.c - add optional "configure" to build zlib as a shared library - suppress Makefile.qnx, use configure instead - fixed deflate for 64-bit systems (detected on Cray) - fixed inflate_blocks for 64-bit systems (detected on Alpha) - declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2) - always return Z_BUF_ERROR when deflate() has nothing to do - deflateInit and inflateInit are now macros to allow version checking - prefix all global functions and types with z_ with -DZ_PREFIX - make falloc completely reentrant (inftrees.c) - fixed very unlikely race condition in ct_static_init - free in reverse order of allocation to help memory manager - use zlib-1.0/* instead of zlib/* inside the tar.gz - make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion -Wstrict-prototypes -Wmissing-prototypes" - allow gzread on concatenated .gz files - deflateEnd now returns Z_DATA_ERROR if it was premature - deflate is finally (?) fully deterministic (no matches beyond end of input) - Document Z_SYNC_FLUSH - add uninstall in Makefile - Check for __cpluplus in zlib.h - Better test in ct_align for partial flush - avoid harmless warnings for Borland C++ - initialize hash_head in deflate.c - avoid warning on fdopen (gzio.c) for HP cc -Aa - include stdlib.h for STDC compilers - include errno.h for Cray - ignore error if ranlib doesn't exist - call ranlib twice for NeXTSTEP - use exec_prefix instead of prefix for libz.a - renamed ct_* as _tr_* to avoid conflict with applications - clear z->msg in inflateInit2 before any error return - initialize opaque in example.c, gzio.c, deflate.c and inflate.c - fixed typo in zconf.h (_GNUC__ => __GNUC__) - check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode) - fix typo in Make_vms.com (f$trnlnm -> f$getsyi) - in fcalloc, normalize pointer if size > 65520 bytes - don't use special fcalloc for 32 bit Borland C++ - use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc... - use Z_BINARY instead of BINARY - document that gzclose after gzdopen will close the file - allow "a" as mode in gzopen. - fix error checking in gzread - allow skipping .gz extra-field on pipes - added reference to Perl interface in README - put the crc table in FAR data (I dislike more and more the medium model :) - added get_crc_table - added a dimension to all arrays (Borland C can't count). - workaround Borland C bug in declaration of inflate_codes_new & inflate_fast - guard against multiple inclusion of *.h (for precompiled header on Mac) - Watcom C pretends to be Microsoft C small model even in 32 bit mode. - don't use unsized arrays to avoid silly warnings by Visual C++: warning C4746: 'inflate_mask' : unsized array treated as '__far' (what's wrong with far data in far model?). - define enum out of inflate_blocks_state to allow compilation with C++ Changes in 0.95 (16 Aug 95) - fix MSDOS small and medium model (now easier to adapt to any compiler) - inlined send_bits - fix the final (:-) bug for deflate with flush (output was correct but not completely flushed in rare occasions). - default window size is same for compression and decompression (it's now sufficient to set MAX_WBITS in zconf.h). - voidp -> voidpf and voidnp -> voidp (for consistency with other typedefs and because voidnp was not near in large model). Changes in 0.94 (13 Aug 95) - support MSDOS medium model - fix deflate with flush (could sometimes generate bad output) - fix deflateReset (zlib header was incorrectly suppressed) - added support for VMS - allow a compression level in gzopen() - gzflush now calls fflush - For deflate with flush, flush even if no more input is provided. - rename libgz.a as libz.a - avoid complex expression in infcodes.c triggering Turbo C bug - work around a problem with gcc on Alpha (in INSERT_STRING) - don't use inline functions (problem with some gcc versions) - allow renaming of Byte, uInt, etc... with #define. - avoid warning about (unused) pointer before start of array in deflate.c - avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c - avoid reserved word 'new' in trees.c Changes in 0.93 (25 June 95) - temporarily disable inline functions - make deflate deterministic - give enough lookahead for PARTIAL_FLUSH - Set binary mode for stdin/stdout in minigzip.c for OS/2 - don't even use signed char in inflate (not portable enough) - fix inflate memory leak for segmented architectures Changes in 0.92 (3 May 95) - don't assume that char is signed (problem on SGI) - Clear bit buffer when starting a stored block - no memcpy on Pyramid - suppressed inftest.c - optimized fill_window, put longest_match inline for gcc - optimized inflate on stored blocks. - untabify all sources to simplify patches Changes in 0.91 (2 May 95) - Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h - Document the memory requirements in zconf.h - added "make install" - fix sync search logic in inflateSync - deflate(Z_FULL_FLUSH) now works even if output buffer too short - after inflateSync, don't scare people with just "lo world" - added support for DJGPP Changes in 0.9 (1 May 95) - don't assume that zalloc clears the allocated memory (the TurboC bug was Mark's bug after all :) - let again gzread copy uncompressed data unchanged (was working in 0.71) - deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented - added a test of inflateSync in example.c - moved MAX_WBITS to zconf.h because users might want to change that. - document explicitly that zalloc(64K) on MSDOS must return a normalized pointer (zero offset) - added Makefiles for Microsoft C, Turbo C, Borland C++ - faster crc32() Changes in 0.8 (29 April 95) - added fast inflate (inffast.c) - deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this is incompatible with previous versions of zlib which returned Z_OK. - work around a TurboC compiler bug (bad code for b << 0, see infutil.h) (actually that was not a compiler bug, see 0.81 above) - gzread no longer reads one extra byte in certain cases - In gzio destroy(), don't reference a freed structure - avoid many warnings for MSDOS - avoid the ERROR symbol which is used by MS Windows Changes in 0.71 (14 April 95) - Fixed more MSDOS compilation problems :( There is still a bug with TurboC large model. Changes in 0.7 (14 April 95) - Added full inflate support. - Simplified the crc32() interface. The pre- and post-conditioning (one's complement) is now done inside crc32(). WARNING: this is incompatible with previous versions; see zlib.h for the new usage. Changes in 0.61 (12 April 95) - workaround for a bug in TurboC. example and minigzip now work on MSDOS. Changes in 0.6 (11 April 95) - added minigzip.c - added gzdopen to reopen a file descriptor as gzFile - added transparent reading of non-gziped files in gzread. - fixed bug in gzread (don't read crc as data) - fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose). - don't allocate big arrays in the stack (for MSDOS) - fix some MSDOS compilation problems Changes in 0.5: - do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but not yet Z_FULL_FLUSH. - support decompression but only in a single step (forced Z_FINISH) - added opaque object for zalloc and zfree. - added deflateReset and inflateReset - added a variable zlib_version for consistency checking. - renamed the 'filter' parameter of deflateInit2 as 'strategy'. Added Z_FILTERED and Z_HUFFMAN_ONLY constants. Changes in 0.4: - avoid "zip" everywhere, use zlib instead of ziplib. - suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush if compression method == 8. - added adler32 and crc32 - renamed deflateOptions as deflateInit2, call one or the other but not both - added the method parameter for deflateInit2. - added inflateInit2 - simplied considerably deflateInit and inflateInit by not supporting user-provided history buffer. This is supported only in deflateInit2 and inflateInit2. Changes in 0.3: - prefix all macro names with Z_ - use Z_FINISH instead of deflateEnd to finish compression. - added Z_HUFFMAN_ONLY - added gzerror() zlib-1.2.11.dfsg/zlib.pc.cmakein0000644000175000017500000000044611727156724016244 0ustar brooniebroonieprefix=@CMAKE_INSTALL_PREFIX@ exec_prefix=@CMAKE_INSTALL_PREFIX@ libdir=@INSTALL_LIB_DIR@ sharedlibdir=@INSTALL_LIB_DIR@ includedir=@INSTALL_INC_DIR@ Name: zlib Description: zlib compression library Version: @VERSION@ Requires: Libs: -L${libdir} -L${sharedlibdir} -lz Cflags: -I${includedir} zlib-1.2.11.dfsg/trees.h0000644000175000017500000002043011362641066014631 0ustar brooniebroonie/* header created automatically with -DGEN_TREES_H */ local const ct_data static_ltree[L_CODES+2] = { {{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}}, {{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}}, {{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}}, {{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}}, {{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}}, {{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}}, {{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}}, {{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}}, {{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}}, {{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}}, {{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}}, {{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}}, {{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}}, {{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}}, {{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}}, {{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}}, {{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}}, {{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}}, {{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}}, {{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}}, {{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}}, {{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}}, {{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}}, {{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}}, {{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}}, {{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}}, {{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}}, {{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}}, {{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}}, {{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}}, {{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}}, {{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}}, {{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}}, {{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}}, {{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}}, {{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}}, {{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}}, {{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}}, {{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}}, {{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}}, {{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}}, {{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}}, {{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}}, {{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}}, {{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}}, {{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}}, {{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}}, {{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}}, {{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}}, {{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}}, {{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}}, {{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}}, {{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}}, {{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}}, {{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}}, {{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}}, {{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}}, {{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}} }; local const ct_data static_dtree[D_CODES] = { {{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}}, {{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}}, {{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}}, {{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}}, {{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}}, {{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}} }; const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = { 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17, 18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29 }; const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= { 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28 }; local const int base_length[LENGTH_CODES] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 0 }; local const int base_dist[D_CODES] = { 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576 }; zlib-1.2.11.dfsg/crc32.c0000644000175000017500000003334513032130646014420 0ustar brooniebroonie/* crc32.c -- compute the CRC-32 of a data stream * Copyright (C) 1995-2006, 2010, 2011, 2012, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h * * Thanks to Rodney Brown for his contribution of faster * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing * tables for updating the shift register in one step with three exclusive-ors * instead of four steps with four exclusive-ors. This results in about a * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3. */ /* @(#) $Id$ */ /* Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore protection on the static variables used to control the first-use generation of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should first call get_crc_table() to initialize the tables before allowing more than one thread to use crc32(). DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h. */ #ifdef MAKECRCH # include # ifndef DYNAMIC_CRC_TABLE # define DYNAMIC_CRC_TABLE # endif /* !DYNAMIC_CRC_TABLE */ #endif /* MAKECRCH */ #include "zutil.h" /* for STDC and FAR definitions */ /* Definitions for doing the crc four data bytes at a time. */ #if !defined(NOBYFOUR) && defined(Z_U4) # define BYFOUR #endif #ifdef BYFOUR local unsigned long crc32_little OF((unsigned long, const unsigned char FAR *, z_size_t)); local unsigned long crc32_big OF((unsigned long, const unsigned char FAR *, z_size_t)); # define TBLS 8 #else # define TBLS 1 #endif /* BYFOUR */ /* Local functions for crc concatenation */ local unsigned long gf2_matrix_times OF((unsigned long *mat, unsigned long vec)); local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat)); local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2)); #ifdef DYNAMIC_CRC_TABLE local volatile int crc_table_empty = 1; local z_crc_t FAR crc_table[TBLS][256]; local void make_crc_table OF((void)); #ifdef MAKECRCH local void write_table OF((FILE *, const z_crc_t FAR *)); #endif /* MAKECRCH */ /* Generate tables for a byte-wise 32-bit CRC calculation on the polynomial: x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1. Polynomials over GF(2) are represented in binary, one bit per coefficient, with the lowest powers in the most significant bit. Then adding polynomials is just exclusive-or, and multiplying a polynomial by x is a right shift by one. If we call the above polynomial p, and represent a byte as the polynomial q, also with the lowest power in the most significant bit (so the byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p, where a mod b means the remainder after dividing a by b. This calculation is done using the shift-register method of multiplying and taking the remainder. The register is initialized to zero, and for each incoming bit, x^32 is added mod p to the register if the bit is a one (where x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by x (which is shifting right by one and adding x^32 mod p if the bit shifted out is a one). We start with the highest power (least significant bit) of q and repeat for all eight bits of q. The first table is simply the CRC of all possible eight bit values. This is all the information needed to generate CRCs on data a byte at a time for all combinations of CRC register values and incoming bytes. The remaining tables allow for word-at-a-time CRC calculation for both big-endian and little- endian machines, where a word is four bytes. */ local void make_crc_table() { z_crc_t c; int n, k; z_crc_t poly; /* polynomial exclusive-or pattern */ /* terms of polynomial defining this crc (except x^32): */ static volatile int first = 1; /* flag to limit concurrent making */ static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26}; /* See if another task is already doing this (not thread-safe, but better than nothing -- significantly reduces duration of vulnerability in case the advice about DYNAMIC_CRC_TABLE is ignored) */ if (first) { first = 0; /* make exclusive-or pattern from polynomial (0xedb88320UL) */ poly = 0; for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++) poly |= (z_crc_t)1 << (31 - p[n]); /* generate a crc for every 8-bit value */ for (n = 0; n < 256; n++) { c = (z_crc_t)n; for (k = 0; k < 8; k++) c = c & 1 ? poly ^ (c >> 1) : c >> 1; crc_table[0][n] = c; } #ifdef BYFOUR /* generate crc for each value followed by one, two, and three zeros, and then the byte reversal of those as well as the first table */ for (n = 0; n < 256; n++) { c = crc_table[0][n]; crc_table[4][n] = ZSWAP32(c); for (k = 1; k < 4; k++) { c = crc_table[0][c & 0xff] ^ (c >> 8); crc_table[k][n] = c; crc_table[k + 4][n] = ZSWAP32(c); } } #endif /* BYFOUR */ crc_table_empty = 0; } else { /* not first */ /* wait for the other guy to finish (not efficient, but rare) */ while (crc_table_empty) ; } #ifdef MAKECRCH /* write out CRC tables to crc32.h */ { FILE *out; out = fopen("crc32.h", "w"); if (out == NULL) return; fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n"); fprintf(out, " * Generated automatically by crc32.c\n */\n\n"); fprintf(out, "local const z_crc_t FAR "); fprintf(out, "crc_table[TBLS][256] =\n{\n {\n"); write_table(out, crc_table[0]); # ifdef BYFOUR fprintf(out, "#ifdef BYFOUR\n"); for (k = 1; k < 8; k++) { fprintf(out, " },\n {\n"); write_table(out, crc_table[k]); } fprintf(out, "#endif\n"); # endif /* BYFOUR */ fprintf(out, " }\n};\n"); fclose(out); } #endif /* MAKECRCH */ } #ifdef MAKECRCH local void write_table(out, table) FILE *out; const z_crc_t FAR *table; { int n; for (n = 0; n < 256; n++) fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", (unsigned long)(table[n]), n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", ")); } #endif /* MAKECRCH */ #else /* !DYNAMIC_CRC_TABLE */ /* ======================================================================== * Tables of CRC-32s of all single-byte values, made by make_crc_table(). */ #include "crc32.h" #endif /* DYNAMIC_CRC_TABLE */ /* ========================================================================= * This function can be used by asm versions of crc32() */ const z_crc_t FAR * ZEXPORT get_crc_table() { #ifdef DYNAMIC_CRC_TABLE if (crc_table_empty) make_crc_table(); #endif /* DYNAMIC_CRC_TABLE */ return (const z_crc_t FAR *)crc_table; } /* ========================================================================= */ #define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8) #define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1 /* ========================================================================= */ unsigned long ZEXPORT crc32_z(crc, buf, len) unsigned long crc; const unsigned char FAR *buf; z_size_t len; { if (buf == Z_NULL) return 0UL; #ifdef DYNAMIC_CRC_TABLE if (crc_table_empty) make_crc_table(); #endif /* DYNAMIC_CRC_TABLE */ #ifdef BYFOUR if (sizeof(void *) == sizeof(ptrdiff_t)) { z_crc_t endian; endian = 1; if (*((unsigned char *)(&endian))) return crc32_little(crc, buf, len); else return crc32_big(crc, buf, len); } #endif /* BYFOUR */ crc = crc ^ 0xffffffffUL; while (len >= 8) { DO8; len -= 8; } if (len) do { DO1; } while (--len); return crc ^ 0xffffffffUL; } /* ========================================================================= */ unsigned long ZEXPORT crc32(crc, buf, len) unsigned long crc; const unsigned char FAR *buf; uInt len; { return crc32_z(crc, buf, len); } #ifdef BYFOUR /* This BYFOUR code accesses the passed unsigned char * buffer with a 32-bit integer pointer type. This violates the strict aliasing rule, where a compiler can assume, for optimization purposes, that two pointers to fundamentally different types won't ever point to the same memory. This can manifest as a problem only if one of the pointers is written to. This code only reads from those pointers. So long as this code remains isolated in this compilation unit, there won't be a problem. For this reason, this code should not be copied and pasted into a compilation unit in which other code writes to the buffer that is passed to these routines. */ /* ========================================================================= */ #define DOLIT4 c ^= *buf4++; \ c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \ crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24] #define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4 /* ========================================================================= */ local unsigned long crc32_little(crc, buf, len) unsigned long crc; const unsigned char FAR *buf; z_size_t len; { register z_crc_t c; register const z_crc_t FAR *buf4; c = (z_crc_t)crc; c = ~c; while (len && ((ptrdiff_t)buf & 3)) { c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); len--; } buf4 = (const z_crc_t FAR *)(const void FAR *)buf; while (len >= 32) { DOLIT32; len -= 32; } while (len >= 4) { DOLIT4; len -= 4; } buf = (const unsigned char FAR *)buf4; if (len) do { c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); } while (--len); c = ~c; return (unsigned long)c; } /* ========================================================================= */ #define DOBIG4 c ^= *buf4++; \ c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \ crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24] #define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4 /* ========================================================================= */ local unsigned long crc32_big(crc, buf, len) unsigned long crc; const unsigned char FAR *buf; z_size_t len; { register z_crc_t c; register const z_crc_t FAR *buf4; c = ZSWAP32((z_crc_t)crc); c = ~c; while (len && ((ptrdiff_t)buf & 3)) { c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); len--; } buf4 = (const z_crc_t FAR *)(const void FAR *)buf; while (len >= 32) { DOBIG32; len -= 32; } while (len >= 4) { DOBIG4; len -= 4; } buf = (const unsigned char FAR *)buf4; if (len) do { c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); } while (--len); c = ~c; return (unsigned long)(ZSWAP32(c)); } #endif /* BYFOUR */ #define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */ /* ========================================================================= */ local unsigned long gf2_matrix_times(mat, vec) unsigned long *mat; unsigned long vec; { unsigned long sum; sum = 0; while (vec) { if (vec & 1) sum ^= *mat; vec >>= 1; mat++; } return sum; } /* ========================================================================= */ local void gf2_matrix_square(square, mat) unsigned long *square; unsigned long *mat; { int n; for (n = 0; n < GF2_DIM; n++) square[n] = gf2_matrix_times(mat, mat[n]); } /* ========================================================================= */ local uLong crc32_combine_(crc1, crc2, len2) uLong crc1; uLong crc2; z_off64_t len2; { int n; unsigned long row; unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */ unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */ /* degenerate case (also disallow negative lengths) */ if (len2 <= 0) return crc1; /* put operator for one zero bit in odd */ odd[0] = 0xedb88320UL; /* CRC-32 polynomial */ row = 1; for (n = 1; n < GF2_DIM; n++) { odd[n] = row; row <<= 1; } /* put operator for two zero bits in even */ gf2_matrix_square(even, odd); /* put operator for four zero bits in odd */ gf2_matrix_square(odd, even); /* apply len2 zeros to crc1 (first square will put the operator for one zero byte, eight zero bits, in even) */ do { /* apply zeros operator for this bit of len2 */ gf2_matrix_square(even, odd); if (len2 & 1) crc1 = gf2_matrix_times(even, crc1); len2 >>= 1; /* if no more bits set, then done */ if (len2 == 0) break; /* another iteration of the loop with odd and even swapped */ gf2_matrix_square(odd, even); if (len2 & 1) crc1 = gf2_matrix_times(odd, crc1); len2 >>= 1; /* if no more bits set, then done */ } while (len2 != 0); /* return combined crc */ crc1 ^= crc2; return crc1; } /* ========================================================================= */ uLong ZEXPORT crc32_combine(crc1, crc2, len2) uLong crc1; uLong crc2; z_off_t len2; { return crc32_combine_(crc1, crc2, len2); } uLong ZEXPORT crc32_combine64(crc1, crc2, len2) uLong crc1; uLong crc2; z_off64_t len2; { return crc32_combine_(crc1, crc2, len2); } zlib-1.2.11.dfsg/msdos/0000755000175000017500000000000013162250104014451 5ustar brooniebrooniezlib-1.2.11.dfsg/msdos/Makefile.emx0000644000175000017500000000264712556064077016734 0ustar brooniebroonie# Makefile for zlib. Modified for emx 0.9c by Chr. Spieler, 6/17/98. # Copyright (C) 1995-1998 Jean-loup Gailly. # For conditions of distribution and use, see copyright notice in zlib.h # To compile, or to compile and test, type: # # make -fmakefile.emx; make test -fmakefile.emx # CC=gcc #CFLAGS=-MMD -O #CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7 #CFLAGS=-MMD -g -DZLIB_DEBUG CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \ -Wstrict-prototypes -Wmissing-prototypes # If cp.exe is available, replace "copy /Y" with "cp -fp" . CP=copy /Y # If gnu install.exe is available, replace $(CP) with ginstall. INSTALL=$(CP) # The default value of RM is "rm -f." If "rm.exe" is found, comment out: RM=del LDLIBS=-L. -lzlib LD=$(CC) -s -o LDSHARED=$(CC) INCL=zlib.h zconf.h LIBS=zlib.a AR=ar rcs prefix=/usr/local exec_prefix = $(prefix) OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \ uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o TEST_OBJS = example.o minigzip.o all: example.exe minigzip.exe test: all ./example echo hello world | .\minigzip | .\minigzip -d %.o : %.c $(CC) $(CFLAGS) -c $< -o $@ zlib.a: $(OBJS) $(AR) $@ $(OBJS) %.exe : %.o $(LIBS) $(LD) $@ $< $(LDLIBS) .PHONY : clean clean: $(RM) *.d $(RM) *.o $(RM) *.exe $(RM) zlib.a $(RM) foo.gz DEPS := $(wildcard *.d) ifneq ($(DEPS),) include $(DEPS) endif zlib-1.2.11.dfsg/msdos/Makefile.bor0000644000175000017500000000603211664533204016705 0ustar brooniebroonie# Makefile for zlib # Borland C++ # Last updated: 15-Mar-2003 # To use, do "make -fmakefile.bor" # To compile in small model, set below: MODEL=s # WARNING: the small model is supported but only for small values of # MAX_WBITS and MAX_MEM_LEVEL. For example: # -DMAX_WBITS=11 -DDEF_WBITS=11 -DMAX_MEM_LEVEL=3 # If you wish to reduce the memory requirements (default 256K for big # objects plus a few K), you can add to the LOC macro below: # -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14 # See zconf.h for details about the memory requirements. # ------------ Turbo C++, Borland C++ ------------ # Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7) # should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added # to the declaration of LOC here: LOC = $(LOCAL_ZLIB) # type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc. CPU_TYP = 0 # memory model: one of s, m, c, l (small, medium, compact, large) MODEL=l # replace bcc with tcc for Turbo C++ 1.0, with bcc32 for the 32 bit version CC=bcc LD=bcc AR=tlib # compiler flags # replace "-O2" by "-O -G -a -d" for Turbo C++ 1.0 CFLAGS=-O2 -Z -m$(MODEL) $(LOC) LDFLAGS=-m$(MODEL) -f- # variables ZLIB_LIB = zlib_$(MODEL).lib OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj # targets all: $(ZLIB_LIB) example.exe minigzip.exe .c.obj: $(CC) -c $(CFLAGS) $*.c adler32.obj: adler32.c zlib.h zconf.h compress.obj: compress.c zlib.h zconf.h crc32.obj: crc32.c zlib.h zconf.h crc32.h deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h gzread.obj: gzread.c zlib.h zconf.h gzguts.h gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h uncompr.obj: uncompr.c zlib.h zconf.h zutil.obj: zutil.c zutil.h zlib.h zconf.h example.obj: test/example.c zlib.h zconf.h minigzip.obj: test/minigzip.c zlib.h zconf.h # the command line is cut to fit in the MS-DOS 128 byte limit: $(ZLIB_LIB): $(OBJ1) $(OBJ2) -del $(ZLIB_LIB) $(AR) $(ZLIB_LIB) $(OBJP1) $(AR) $(ZLIB_LIB) $(OBJP2) example.exe: example.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB) minigzip.exe: minigzip.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB) test: example.exe minigzip.exe example echo hello world | minigzip | minigzip -d clean: -del *.obj -del *.lib -del *.exe -del zlib_*.bak -del foo.gz zlib-1.2.11.dfsg/msdos/Makefile.dj20000644000175000017500000000507412556064077016617 0ustar brooniebroonie# Makefile for zlib. Modified for djgpp v2.0 by F. J. Donahoe, 3/15/96. # Copyright (C) 1995-1998 Jean-loup Gailly. # For conditions of distribution and use, see copyright notice in zlib.h # To compile, or to compile and test, type: # # make -fmakefile.dj2; make test -fmakefile.dj2 # # To install libz.a, zconf.h and zlib.h in the djgpp directories, type: # # make install -fmakefile.dj2 # # after first defining LIBRARY_PATH and INCLUDE_PATH in djgpp.env as # in the sample below if the pattern of the DJGPP distribution is to # be followed. Remember that, while 'es around <=> are ignored in # makefiles, they are *not* in batch files or in djgpp.env. # - - - - - # [make] # INCLUDE_PATH=%\>;INCLUDE_PATH%%\DJDIR%\include # LIBRARY_PATH=%\>;LIBRARY_PATH%%\DJDIR%\lib # BUTT=-m486 # - - - - - # Alternately, these variables may be defined below, overriding the values # in djgpp.env, as # INCLUDE_PATH=c:\usr\include # LIBRARY_PATH=c:\usr\lib CC=gcc #CFLAGS=-MMD -O #CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7 #CFLAGS=-MMD -g -DZLIB_DEBUG CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \ -Wstrict-prototypes -Wmissing-prototypes # If cp.exe is available, replace "copy /Y" with "cp -fp" . CP=copy /Y # If gnu install.exe is available, replace $(CP) with ginstall. INSTALL=$(CP) # The default value of RM is "rm -f." If "rm.exe" is found, comment out: RM=del LDLIBS=-L. -lz LD=$(CC) -s -o LDSHARED=$(CC) INCL=zlib.h zconf.h LIBS=libz.a AR=ar rcs prefix=/usr/local exec_prefix = $(prefix) OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \ uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o OBJA = # to use the asm code: make OBJA=match.o TEST_OBJS = example.o minigzip.o all: example.exe minigzip.exe check: test test: all ./example echo hello world | .\minigzip | .\minigzip -d %.o : %.c $(CC) $(CFLAGS) -c $< -o $@ libz.a: $(OBJS) $(OBJA) $(AR) $@ $(OBJS) $(OBJA) %.exe : %.o $(LIBS) $(LD) $@ $< $(LDLIBS) # INCLUDE_PATH and LIBRARY_PATH were set for [make] in djgpp.env . .PHONY : uninstall clean install: $(INCL) $(LIBS) -@if not exist $(INCLUDE_PATH)\nul mkdir $(INCLUDE_PATH) -@if not exist $(LIBRARY_PATH)\nul mkdir $(LIBRARY_PATH) $(INSTALL) zlib.h $(INCLUDE_PATH) $(INSTALL) zconf.h $(INCLUDE_PATH) $(INSTALL) libz.a $(LIBRARY_PATH) uninstall: $(RM) $(INCLUDE_PATH)\zlib.h $(RM) $(INCLUDE_PATH)\zconf.h $(RM) $(LIBRARY_PATH)\libz.a clean: $(RM) *.d $(RM) *.o $(RM) *.exe $(RM) libz.a $(RM) foo.gz DEPS := $(wildcard *.d) ifneq ($(DEPS),) include $(DEPS) endif zlib-1.2.11.dfsg/msdos/Makefile.tc0000644000175000017500000000514111664533204016531 0ustar brooniebroonie# Makefile for zlib # Turbo C 2.01, Turbo C++ 1.01 # Last updated: 15-Mar-2003 # To use, do "make -fmakefile.tc" # To compile in small model, set below: MODEL=s # WARNING: the small model is supported but only for small values of # MAX_WBITS and MAX_MEM_LEVEL. For example: # -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3 # If you wish to reduce the memory requirements (default 256K for big # objects plus a few K), you can add to CFLAGS below: # -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14 # See zconf.h for details about the memory requirements. # ------------ Turbo C 2.01, Turbo C++ 1.01 ------------ MODEL=l CC=tcc LD=tcc AR=tlib # CFLAGS=-O2 -G -Z -m$(MODEL) -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3 CFLAGS=-O2 -G -Z -m$(MODEL) LDFLAGS=-m$(MODEL) -f- # variables ZLIB_LIB = zlib_$(MODEL).lib OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj # targets all: $(ZLIB_LIB) example.exe minigzip.exe .c.obj: $(CC) -c $(CFLAGS) $*.c adler32.obj: adler32.c zlib.h zconf.h compress.obj: compress.c zlib.h zconf.h crc32.obj: crc32.c zlib.h zconf.h crc32.h deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h gzread.obj: gzread.c zlib.h zconf.h gzguts.h gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h uncompr.obj: uncompr.c zlib.h zconf.h zutil.obj: zutil.c zutil.h zlib.h zconf.h example.obj: test/example.c zlib.h zconf.h minigzip.obj: test/minigzip.c zlib.h zconf.h # the command line is cut to fit in the MS-DOS 128 byte limit: $(ZLIB_LIB): $(OBJ1) $(OBJ2) -del $(ZLIB_LIB) $(AR) $(ZLIB_LIB) $(OBJP1) $(AR) $(ZLIB_LIB) $(OBJP2) example.exe: example.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB) minigzip.exe: minigzip.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB) test: example.exe minigzip.exe example echo hello world | minigzip | minigzip -d clean: -del *.obj -del *.lib -del *.exe -del zlib_*.bak -del foo.gz zlib-1.2.11.dfsg/msdos/Makefile.msc0000644000175000017500000000555411664533204016715 0ustar brooniebroonie# Makefile for zlib # Microsoft C 5.1 or later # Last updated: 19-Mar-2003 # To use, do "make makefile.msc" # To compile in small model, set below: MODEL=S # If you wish to reduce the memory requirements (default 256K for big # objects plus a few K), you can add to the LOC macro below: # -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14 # See zconf.h for details about the memory requirements. # ------------- Microsoft C 5.1 and later ------------- # Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7) # should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added # to the declaration of LOC here: LOC = $(LOCAL_ZLIB) # Type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc. CPU_TYP = 0 # Memory model: one of S, M, C, L (small, medium, compact, large) MODEL=L CC=cl CFLAGS=-nologo -A$(MODEL) -G$(CPU_TYP) -W3 -Oait -Gs $(LOC) #-Ox generates bad code with MSC 5.1 LIB_CFLAGS=-Zl $(CFLAGS) LD=link LDFLAGS=/noi/e/st:0x1500/noe/farcall/packcode # "/farcall/packcode" are only useful for `large code' memory models # but should be a "no-op" for small code models. # variables ZLIB_LIB = zlib_$(MODEL).lib OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj # targets all: $(ZLIB_LIB) example.exe minigzip.exe .c.obj: $(CC) -c $(LIB_CFLAGS) $*.c adler32.obj: adler32.c zlib.h zconf.h compress.obj: compress.c zlib.h zconf.h crc32.obj: crc32.c zlib.h zconf.h crc32.h deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h gzread.obj: gzread.c zlib.h zconf.h gzguts.h gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \ inffast.h inffixed.h inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h uncompr.obj: uncompr.c zlib.h zconf.h zutil.obj: zutil.c zutil.h zlib.h zconf.h example.obj: test/example.c zlib.h zconf.h $(CC) -c $(CFLAGS) $*.c minigzip.obj: test/minigzip.c zlib.h zconf.h $(CC) -c $(CFLAGS) $*.c # the command line is cut to fit in the MS-DOS 128 byte limit: $(ZLIB_LIB): $(OBJ1) $(OBJ2) if exist $(ZLIB_LIB) del $(ZLIB_LIB) lib $(ZLIB_LIB) $(OBJ1); lib $(ZLIB_LIB) $(OBJ2); example.exe: example.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) example.obj,,,$(ZLIB_LIB); minigzip.exe: minigzip.obj $(ZLIB_LIB) $(LD) $(LDFLAGS) minigzip.obj,,,$(ZLIB_LIB); test: example.exe minigzip.exe example echo hello world | minigzip | minigzip -d clean: -del *.obj -del *.lib -del *.exe -del *.map -del zlib_*.bak -del foo.gz zlib-1.2.11.dfsg/treebuild.xml0000644000175000017500000000610613036730604016040 0ustar brooniebroonie zip compression library zlib-1.2.11.dfsg/infback.c0000644000175000017500000005427313032130646015104 0ustar brooniebroonie/* infback.c -- inflate using a call-back interface * Copyright (C) 1995-2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* This code is largely copied from inflate.c. Normally either infback.o or inflate.o would be linked into an application--not both. The interface with inffast.c is retained so that optimized assembler-coded versions of inflate_fast() can be used with either inflate.c or infback.c. */ #include "zutil.h" #include "inftrees.h" #include "inflate.h" #include "inffast.h" /* function prototypes */ local void fixedtables OF((struct inflate_state FAR *state)); /* strm provides memory allocation functions in zalloc and zfree, or Z_NULL to use the library memory allocation functions. windowBits is in the range 8..15, and window is a user-supplied window and output buffer that is 2**windowBits bytes. */ int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size) z_streamp strm; int windowBits; unsigned char FAR *window; const char *version; int stream_size; { struct inflate_state FAR *state; if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || stream_size != (int)(sizeof(z_stream))) return Z_VERSION_ERROR; if (strm == Z_NULL || window == Z_NULL || windowBits < 8 || windowBits > 15) return Z_STREAM_ERROR; strm->msg = Z_NULL; /* in case we return an error */ if (strm->zalloc == (alloc_func)0) { #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zalloc = zcalloc; strm->opaque = (voidpf)0; #endif } if (strm->zfree == (free_func)0) #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zfree = zcfree; #endif state = (struct inflate_state FAR *)ZALLOC(strm, 1, sizeof(struct inflate_state)); if (state == Z_NULL) return Z_MEM_ERROR; Tracev((stderr, "inflate: allocated\n")); strm->state = (struct internal_state FAR *)state; state->dmax = 32768U; state->wbits = (uInt)windowBits; state->wsize = 1U << windowBits; state->window = window; state->wnext = 0; state->whave = 0; return Z_OK; } /* Return state with length and distance decoding tables and index sizes set to fixed code decoding. Normally this returns fixed tables from inffixed.h. If BUILDFIXED is defined, then instead this routine builds the tables the first time it's called, and returns those tables the first time and thereafter. This reduces the size of the code by about 2K bytes, in exchange for a little execution time. However, BUILDFIXED should not be used for threaded applications, since the rewriting of the tables and virgin may not be thread-safe. */ local void fixedtables(state) struct inflate_state FAR *state; { #ifdef BUILDFIXED static int virgin = 1; static code *lenfix, *distfix; static code fixed[544]; /* build fixed huffman tables if first call (may not be thread safe) */ if (virgin) { unsigned sym, bits; static code *next; /* literal/length table */ sym = 0; while (sym < 144) state->lens[sym++] = 8; while (sym < 256) state->lens[sym++] = 9; while (sym < 280) state->lens[sym++] = 7; while (sym < 288) state->lens[sym++] = 8; next = fixed; lenfix = next; bits = 9; inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); /* distance table */ sym = 0; while (sym < 32) state->lens[sym++] = 5; distfix = next; bits = 5; inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); /* do this just once */ virgin = 0; } #else /* !BUILDFIXED */ # include "inffixed.h" #endif /* BUILDFIXED */ state->lencode = lenfix; state->lenbits = 9; state->distcode = distfix; state->distbits = 5; } /* Macros for inflateBack(): */ /* Load returned state from inflate_fast() */ #define LOAD() \ do { \ put = strm->next_out; \ left = strm->avail_out; \ next = strm->next_in; \ have = strm->avail_in; \ hold = state->hold; \ bits = state->bits; \ } while (0) /* Set state from registers for inflate_fast() */ #define RESTORE() \ do { \ strm->next_out = put; \ strm->avail_out = left; \ strm->next_in = next; \ strm->avail_in = have; \ state->hold = hold; \ state->bits = bits; \ } while (0) /* Clear the input bit accumulator */ #define INITBITS() \ do { \ hold = 0; \ bits = 0; \ } while (0) /* Assure that some input is available. If input is requested, but denied, then return a Z_BUF_ERROR from inflateBack(). */ #define PULL() \ do { \ if (have == 0) { \ have = in(in_desc, &next); \ if (have == 0) { \ next = Z_NULL; \ ret = Z_BUF_ERROR; \ goto inf_leave; \ } \ } \ } while (0) /* Get a byte of input into the bit accumulator, or return from inflateBack() with an error if there is no input available. */ #define PULLBYTE() \ do { \ PULL(); \ have--; \ hold += (unsigned long)(*next++) << bits; \ bits += 8; \ } while (0) /* Assure that there are at least n bits in the bit accumulator. If there is not enough available input to do that, then return from inflateBack() with an error. */ #define NEEDBITS(n) \ do { \ while (bits < (unsigned)(n)) \ PULLBYTE(); \ } while (0) /* Return the low n bits of the bit accumulator (n < 16) */ #define BITS(n) \ ((unsigned)hold & ((1U << (n)) - 1)) /* Remove n bits from the bit accumulator */ #define DROPBITS(n) \ do { \ hold >>= (n); \ bits -= (unsigned)(n); \ } while (0) /* Remove zero to seven bits as needed to go to a byte boundary */ #define BYTEBITS() \ do { \ hold >>= bits & 7; \ bits -= bits & 7; \ } while (0) /* Assure that some output space is available, by writing out the window if it's full. If the write fails, return from inflateBack() with a Z_BUF_ERROR. */ #define ROOM() \ do { \ if (left == 0) { \ put = state->window; \ left = state->wsize; \ state->whave = left; \ if (out(out_desc, put, left)) { \ ret = Z_BUF_ERROR; \ goto inf_leave; \ } \ } \ } while (0) /* strm provides the memory allocation functions and window buffer on input, and provides information on the unused input on return. For Z_DATA_ERROR returns, strm will also provide an error message. in() and out() are the call-back input and output functions. When inflateBack() needs more input, it calls in(). When inflateBack() has filled the window with output, or when it completes with data in the window, it calls out() to write out the data. The application must not change the provided input until in() is called again or inflateBack() returns. The application must not change the window/output buffer until inflateBack() returns. in() and out() are called with a descriptor parameter provided in the inflateBack() call. This parameter can be a structure that provides the information required to do the read or write, as well as accumulated information on the input and output such as totals and check values. in() should return zero on failure. out() should return non-zero on failure. If either in() or out() fails, than inflateBack() returns a Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it was in() or out() that caused in the error. Otherwise, inflateBack() returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format error, or Z_MEM_ERROR if it could not allocate memory for the state. inflateBack() can also return Z_STREAM_ERROR if the input parameters are not correct, i.e. strm is Z_NULL or the state was not initialized. */ int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc) z_streamp strm; in_func in; void FAR *in_desc; out_func out; void FAR *out_desc; { struct inflate_state FAR *state; z_const unsigned char FAR *next; /* next input */ unsigned char FAR *put; /* next output */ unsigned have, left; /* available input and output */ unsigned long hold; /* bit buffer */ unsigned bits; /* bits in bit buffer */ unsigned copy; /* number of stored or match bytes to copy */ unsigned char FAR *from; /* where to copy match bytes from */ code here; /* current decoding table entry */ code last; /* parent table entry */ unsigned len; /* length to copy for repeats, bits to drop */ int ret; /* return code */ static const unsigned short order[19] = /* permutation of code lengths */ {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; /* Check that the strm exists and that the state was initialized */ if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; /* Reset the state */ strm->msg = Z_NULL; state->mode = TYPE; state->last = 0; state->whave = 0; next = strm->next_in; have = next != Z_NULL ? strm->avail_in : 0; hold = 0; bits = 0; put = state->window; left = state->wsize; /* Inflate until end of block marked as last */ for (;;) switch (state->mode) { case TYPE: /* determine and dispatch block type */ if (state->last) { BYTEBITS(); state->mode = DONE; break; } NEEDBITS(3); state->last = BITS(1); DROPBITS(1); switch (BITS(2)) { case 0: /* stored block */ Tracev((stderr, "inflate: stored block%s\n", state->last ? " (last)" : "")); state->mode = STORED; break; case 1: /* fixed block */ fixedtables(state); Tracev((stderr, "inflate: fixed codes block%s\n", state->last ? " (last)" : "")); state->mode = LEN; /* decode codes */ break; case 2: /* dynamic block */ Tracev((stderr, "inflate: dynamic codes block%s\n", state->last ? " (last)" : "")); state->mode = TABLE; break; case 3: strm->msg = (char *)"invalid block type"; state->mode = BAD; } DROPBITS(2); break; case STORED: /* get and verify stored block length */ BYTEBITS(); /* go to byte boundary */ NEEDBITS(32); if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { strm->msg = (char *)"invalid stored block lengths"; state->mode = BAD; break; } state->length = (unsigned)hold & 0xffff; Tracev((stderr, "inflate: stored length %u\n", state->length)); INITBITS(); /* copy stored block from input to output */ while (state->length != 0) { copy = state->length; PULL(); ROOM(); if (copy > have) copy = have; if (copy > left) copy = left; zmemcpy(put, next, copy); have -= copy; next += copy; left -= copy; put += copy; state->length -= copy; } Tracev((stderr, "inflate: stored end\n")); state->mode = TYPE; break; case TABLE: /* get dynamic table entries descriptor */ NEEDBITS(14); state->nlen = BITS(5) + 257; DROPBITS(5); state->ndist = BITS(5) + 1; DROPBITS(5); state->ncode = BITS(4) + 4; DROPBITS(4); #ifndef PKZIP_BUG_WORKAROUND if (state->nlen > 286 || state->ndist > 30) { strm->msg = (char *)"too many length or distance symbols"; state->mode = BAD; break; } #endif Tracev((stderr, "inflate: table sizes ok\n")); /* get code length code lengths (not a typo) */ state->have = 0; while (state->have < state->ncode) { NEEDBITS(3); state->lens[order[state->have++]] = (unsigned short)BITS(3); DROPBITS(3); } while (state->have < 19) state->lens[order[state->have++]] = 0; state->next = state->codes; state->lencode = (code const FAR *)(state->next); state->lenbits = 7; ret = inflate_table(CODES, state->lens, 19, &(state->next), &(state->lenbits), state->work); if (ret) { strm->msg = (char *)"invalid code lengths set"; state->mode = BAD; break; } Tracev((stderr, "inflate: code lengths ok\n")); /* get length and distance code code lengths */ state->have = 0; while (state->have < state->nlen + state->ndist) { for (;;) { here = state->lencode[BITS(state->lenbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if (here.val < 16) { DROPBITS(here.bits); state->lens[state->have++] = here.val; } else { if (here.val == 16) { NEEDBITS(here.bits + 2); DROPBITS(here.bits); if (state->have == 0) { strm->msg = (char *)"invalid bit length repeat"; state->mode = BAD; break; } len = (unsigned)(state->lens[state->have - 1]); copy = 3 + BITS(2); DROPBITS(2); } else if (here.val == 17) { NEEDBITS(here.bits + 3); DROPBITS(here.bits); len = 0; copy = 3 + BITS(3); DROPBITS(3); } else { NEEDBITS(here.bits + 7); DROPBITS(here.bits); len = 0; copy = 11 + BITS(7); DROPBITS(7); } if (state->have + copy > state->nlen + state->ndist) { strm->msg = (char *)"invalid bit length repeat"; state->mode = BAD; break; } while (copy--) state->lens[state->have++] = (unsigned short)len; } } /* handle error breaks in while */ if (state->mode == BAD) break; /* check for end-of-block code (better have one) */ if (state->lens[256] == 0) { strm->msg = (char *)"invalid code -- missing end-of-block"; state->mode = BAD; break; } /* build code tables -- note: do not change the lenbits or distbits values here (9 and 6) without reading the comments in inftrees.h concerning the ENOUGH constants, which depend on those values */ state->next = state->codes; state->lencode = (code const FAR *)(state->next); state->lenbits = 9; ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), &(state->lenbits), state->work); if (ret) { strm->msg = (char *)"invalid literal/lengths set"; state->mode = BAD; break; } state->distcode = (code const FAR *)(state->next); state->distbits = 6; ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, &(state->next), &(state->distbits), state->work); if (ret) { strm->msg = (char *)"invalid distances set"; state->mode = BAD; break; } Tracev((stderr, "inflate: codes ok\n")); state->mode = LEN; case LEN: /* use inflate_fast() if we have enough input and output */ if (have >= 6 && left >= 258) { RESTORE(); if (state->whave < state->wsize) state->whave = state->wsize - left; inflate_fast(strm, state->wsize); LOAD(); break; } /* get a literal, length, or end-of-block code */ for (;;) { here = state->lencode[BITS(state->lenbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if (here.op && (here.op & 0xf0) == 0) { last = here; for (;;) { here = state->lencode[last.val + (BITS(last.bits + last.op) >> last.bits)]; if ((unsigned)(last.bits + here.bits) <= bits) break; PULLBYTE(); } DROPBITS(last.bits); } DROPBITS(here.bits); state->length = (unsigned)here.val; /* process literal */ if (here.op == 0) { Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? "inflate: literal '%c'\n" : "inflate: literal 0x%02x\n", here.val)); ROOM(); *put++ = (unsigned char)(state->length); left--; state->mode = LEN; break; } /* process end of block */ if (here.op & 32) { Tracevv((stderr, "inflate: end of block\n")); state->mode = TYPE; break; } /* invalid code */ if (here.op & 64) { strm->msg = (char *)"invalid literal/length code"; state->mode = BAD; break; } /* length code -- get extra bits, if any */ state->extra = (unsigned)(here.op) & 15; if (state->extra != 0) { NEEDBITS(state->extra); state->length += BITS(state->extra); DROPBITS(state->extra); } Tracevv((stderr, "inflate: length %u\n", state->length)); /* get distance code */ for (;;) { here = state->distcode[BITS(state->distbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if ((here.op & 0xf0) == 0) { last = here; for (;;) { here = state->distcode[last.val + (BITS(last.bits + last.op) >> last.bits)]; if ((unsigned)(last.bits + here.bits) <= bits) break; PULLBYTE(); } DROPBITS(last.bits); } DROPBITS(here.bits); if (here.op & 64) { strm->msg = (char *)"invalid distance code"; state->mode = BAD; break; } state->offset = (unsigned)here.val; /* get distance extra bits, if any */ state->extra = (unsigned)(here.op) & 15; if (state->extra != 0) { NEEDBITS(state->extra); state->offset += BITS(state->extra); DROPBITS(state->extra); } if (state->offset > state->wsize - (state->whave < state->wsize ? left : 0)) { strm->msg = (char *)"invalid distance too far back"; state->mode = BAD; break; } Tracevv((stderr, "inflate: distance %u\n", state->offset)); /* copy match from window to output */ do { ROOM(); copy = state->wsize - state->offset; if (copy < left) { from = put + copy; copy = left - copy; } else { from = put - state->offset; copy = left; } if (copy > state->length) copy = state->length; state->length -= copy; left -= copy; do { *put++ = *from++; } while (--copy); } while (state->length != 0); break; case DONE: /* inflate stream terminated properly -- write leftover output */ ret = Z_STREAM_END; if (left < state->wsize) { if (out(out_desc, state->window, state->wsize - left)) ret = Z_BUF_ERROR; } goto inf_leave; case BAD: ret = Z_DATA_ERROR; goto inf_leave; default: /* can't happen, but makes compilers happy */ ret = Z_STREAM_ERROR; goto inf_leave; } /* Return unused input */ inf_leave: strm->next_in = next; strm->avail_in = have; return ret; } int ZEXPORT inflateBackEnd(strm) z_streamp strm; { if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) return Z_STREAM_ERROR; ZFREE(strm, strm->state); strm->state = Z_NULL; Tracev((stderr, "inflate: end\n")); return Z_OK; } zlib-1.2.11.dfsg/adler32.c0000644000175000017500000001212413032130646014730 0ustar brooniebroonie/* adler32.c -- compute the Adler-32 checksum of a data stream * Copyright (C) 1995-2011, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #include "zutil.h" local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2)); #define BASE 65521U /* largest prime smaller than 65536 */ #define NMAX 5552 /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ #define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;} #define DO2(buf,i) DO1(buf,i); DO1(buf,i+1); #define DO4(buf,i) DO2(buf,i); DO2(buf,i+2); #define DO8(buf,i) DO4(buf,i); DO4(buf,i+4); #define DO16(buf) DO8(buf,0); DO8(buf,8); /* use NO_DIVIDE if your processor does not do division in hardware -- try it both ways to see which is faster */ #ifdef NO_DIVIDE /* note that this assumes BASE is 65521, where 65536 % 65521 == 15 (thank you to John Reiser for pointing this out) */ # define CHOP(a) \ do { \ unsigned long tmp = a >> 16; \ a &= 0xffffUL; \ a += (tmp << 4) - tmp; \ } while (0) # define MOD28(a) \ do { \ CHOP(a); \ if (a >= BASE) a -= BASE; \ } while (0) # define MOD(a) \ do { \ CHOP(a); \ MOD28(a); \ } while (0) # define MOD63(a) \ do { /* this assumes a is not negative */ \ z_off64_t tmp = a >> 32; \ a &= 0xffffffffL; \ a += (tmp << 8) - (tmp << 5) + tmp; \ tmp = a >> 16; \ a &= 0xffffL; \ a += (tmp << 4) - tmp; \ tmp = a >> 16; \ a &= 0xffffL; \ a += (tmp << 4) - tmp; \ if (a >= BASE) a -= BASE; \ } while (0) #else # define MOD(a) a %= BASE # define MOD28(a) a %= BASE # define MOD63(a) a %= BASE #endif /* ========================================================================= */ uLong ZEXPORT adler32_z(adler, buf, len) uLong adler; const Bytef *buf; z_size_t len; { unsigned long sum2; unsigned n; /* split Adler-32 into component sums */ sum2 = (adler >> 16) & 0xffff; adler &= 0xffff; /* in case user likes doing a byte at a time, keep it fast */ if (len == 1) { adler += buf[0]; if (adler >= BASE) adler -= BASE; sum2 += adler; if (sum2 >= BASE) sum2 -= BASE; return adler | (sum2 << 16); } /* initial Adler-32 value (deferred check for len == 1 speed) */ if (buf == Z_NULL) return 1L; /* in case short lengths are provided, keep it somewhat fast */ if (len < 16) { while (len--) { adler += *buf++; sum2 += adler; } if (adler >= BASE) adler -= BASE; MOD28(sum2); /* only added so many BASE's */ return adler | (sum2 << 16); } /* do length NMAX blocks -- requires just one modulo operation */ while (len >= NMAX) { len -= NMAX; n = NMAX / 16; /* NMAX is divisible by 16 */ do { DO16(buf); /* 16 sums unrolled */ buf += 16; } while (--n); MOD(adler); MOD(sum2); } /* do remaining bytes (less than NMAX, still just one modulo) */ if (len) { /* avoid modulos if none remaining */ while (len >= 16) { len -= 16; DO16(buf); buf += 16; } while (len--) { adler += *buf++; sum2 += adler; } MOD(adler); MOD(sum2); } /* return recombined sums */ return adler | (sum2 << 16); } /* ========================================================================= */ uLong ZEXPORT adler32(adler, buf, len) uLong adler; const Bytef *buf; uInt len; { return adler32_z(adler, buf, len); } /* ========================================================================= */ local uLong adler32_combine_(adler1, adler2, len2) uLong adler1; uLong adler2; z_off64_t len2; { unsigned long sum1; unsigned long sum2; unsigned rem; /* for negative len, return invalid adler32 as a clue for debugging */ if (len2 < 0) return 0xffffffffUL; /* the derivation of this formula is left as an exercise for the reader */ MOD63(len2); /* assumes len2 >= 0 */ rem = (unsigned)len2; sum1 = adler1 & 0xffff; sum2 = rem * sum1; MOD(sum2); sum1 += (adler2 & 0xffff) + BASE - 1; sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem; if (sum1 >= BASE) sum1 -= BASE; if (sum1 >= BASE) sum1 -= BASE; if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1); if (sum2 >= BASE) sum2 -= BASE; return sum1 | (sum2 << 16); } /* ========================================================================= */ uLong ZEXPORT adler32_combine(adler1, adler2, len2) uLong adler1; uLong adler2; z_off_t len2; { return adler32_combine_(adler1, adler2, len2); } uLong ZEXPORT adler32_combine64(adler1, adler2, len2) uLong adler1; uLong adler2; z_off64_t len2; { return adler32_combine_(adler1, adler2, len2); } zlib-1.2.11.dfsg/qnx/0000755000175000017500000000000013162250104014132 5ustar brooniebrooniezlib-1.2.11.dfsg/qnx/package.qpg0000644000175000017500000001444013036730604016251 0ustar brooniebroonie Library Medium 2.0 zlib zlib alain.bonnefoy@icbt.com Public public www.gzip.org/zlib Jean-Loup Gailly,Mark Adler www.gzip.org/zlib zlib@gzip.org A massively spiffy yet delicately unobtrusive compression library. zlib is designed to be a free, general-purpose, legally unencumbered, lossless data compression library for use on virtually any computer hardware and operating system. http://www.gzip.org/zlib 1.2.11 Medium Stable No License Software Development/Libraries and Extensions/C Libraries zlib,compression qnx6 qnx6 None Developer Install Post No Ignore No Optional InstallOver zlib InstallOver zlib-dev zlib-1.2.11.dfsg/zutil.h0000644000175000017500000001572713032130646014664 0ustar brooniebroonie/* zutil.h -- internal interface and configuration of the compression library * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* WARNING: this file should *not* be used by applications. It is part of the implementation of the compression library and is subject to change. Applications should only use zlib.h. */ /* @(#) $Id$ */ #ifndef ZUTIL_H #define ZUTIL_H #ifdef HAVE_HIDDEN # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) #else # define ZLIB_INTERNAL #endif #include "zlib.h" #if defined(STDC) && !defined(Z_SOLO) # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) # include # endif # include # include #endif #ifdef Z_SOLO typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ #endif #ifndef local # define local static #endif /* since "static" is used to mean two completely different things in C, we define "local" for the non-static meaning of "static", for readability (compile with -Dlocal if your debugger can't find static symbols) */ typedef unsigned char uch; typedef uch FAR uchf; typedef unsigned short ush; typedef ush FAR ushf; typedef unsigned long ulg; extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ /* (size given to avoid silly warnings with Visual C++) */ #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] #define ERR_RETURN(strm,err) \ return (strm->msg = ERR_MSG(err), (err)) /* To be used only when the state is known to be valid */ /* common constants */ #ifndef DEF_WBITS # define DEF_WBITS MAX_WBITS #endif /* default windowBits for decompression. MAX_WBITS is for compression only */ #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif /* default memLevel */ #define STORED_BLOCK 0 #define STATIC_TREES 1 #define DYN_TREES 2 /* The three kinds of block type */ #define MIN_MATCH 3 #define MAX_MATCH 258 /* The minimum and maximum match lengths */ #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ /* target dependencies */ #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) # define OS_CODE 0x00 # ifndef Z_SOLO # if defined(__TURBOC__) || defined(__BORLANDC__) # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) /* Allow compilation with ANSI keywords only enabled */ void _Cdecl farfree( void *block ); void *_Cdecl farmalloc( unsigned long nbytes ); # else # include # endif # else /* MSC or DJGPP */ # include # endif # endif #endif #ifdef AMIGA # define OS_CODE 1 #endif #if defined(VAXC) || defined(VMS) # define OS_CODE 2 # define F_OPEN(name, mode) \ fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") #endif #ifdef __370__ # if __TARGET_LIB__ < 0x20000000 # define OS_CODE 4 # elif __TARGET_LIB__ < 0x40000000 # define OS_CODE 11 # else # define OS_CODE 8 # endif #endif #if defined(ATARI) || defined(atarist) # define OS_CODE 5 #endif #ifdef OS2 # define OS_CODE 6 # if defined(M_I86) && !defined(Z_SOLO) # include # endif #endif #if defined(MACOS) || defined(TARGET_OS_MAC) # define OS_CODE 7 # ifndef Z_SOLO # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os # include /* for fdopen */ # else # ifndef fdopen # define fdopen(fd,mode) NULL /* No fdopen() */ # endif # endif # endif #endif #ifdef __acorn # define OS_CODE 13 #endif #if defined(WIN32) && !defined(__CYGWIN__) # define OS_CODE 10 #endif #ifdef _BEOS_ # define OS_CODE 16 #endif #ifdef __TOS_OS400__ # define OS_CODE 18 #endif #ifdef __APPLE__ # define OS_CODE 19 #endif #if defined(_BEOS_) || defined(RISCOS) # define fdopen(fd,mode) NULL /* No fdopen() */ #endif #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX # if defined(_WIN32_WCE) # define fdopen(fd,mode) NULL /* No fdopen() */ # ifndef _PTRDIFF_T_DEFINED typedef int ptrdiff_t; # define _PTRDIFF_T_DEFINED # endif # else # define fdopen(fd,type) _fdopen(fd,type) # endif #endif #if defined(__BORLANDC__) && !defined(MSDOS) #pragma warn -8004 #pragma warn -8008 #pragma warn -8066 #endif /* provide prototypes for these when building zlib without LFS */ #if !defined(_WIN32) && \ (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); #endif /* common defaults */ #ifndef OS_CODE # define OS_CODE 3 /* assume Unix */ #endif #ifndef F_OPEN # define F_OPEN(name, mode) fopen((name), (mode)) #endif /* functions */ #if defined(pyr) || defined(Z_SOLO) # define NO_MEMCPY #endif #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) /* Use our own functions for small and medium model with MSC <= 5.0. * You may have to use the same strategy for Borland C (untested). * The __SC__ check is for Symantec. */ # define NO_MEMCPY #endif #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) # define HAVE_MEMCPY #endif #ifdef HAVE_MEMCPY # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ # define zmemcpy _fmemcpy # define zmemcmp _fmemcmp # define zmemzero(dest, len) _fmemset(dest, 0, len) # else # define zmemcpy memcpy # define zmemcmp memcmp # define zmemzero(dest, len) memset(dest, 0, len) # endif #else void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); #endif /* Diagnostic functions */ #ifdef ZLIB_DEBUG # include extern int ZLIB_INTERNAL z_verbose; extern void ZLIB_INTERNAL z_error OF((char *m)); # define Assert(cond,msg) {if(!(cond)) z_error(msg);} # define Trace(x) {if (z_verbose>=0) fprintf x ;} # define Tracev(x) {if (z_verbose>0) fprintf x ;} # define Tracevv(x) {if (z_verbose>1) fprintf x ;} # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} #else # define Assert(cond,msg) # define Trace(x) # define Tracev(x) # define Tracevv(x) # define Tracec(c,x) # define Tracecv(c,x) #endif #ifndef Z_SOLO voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, unsigned size)); void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); #endif #define ZALLOC(strm, items, size) \ (*((strm)->zalloc))((strm)->opaque, (items), (size)) #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} /* Reverse the bytes in a 32-bit value */ #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) #endif /* ZUTIL_H */ zlib-1.2.11.dfsg/gzwrite.c0000644000175000017500000004546513036730604015211 0ustar brooniebroonie/* gzwrite.c -- zlib functions for writing gzip files * Copyright (C) 2004-2017 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "gzguts.h" /* Local functions */ local int gz_init OF((gz_statep)); local int gz_comp OF((gz_statep, int)); local int gz_zero OF((gz_statep, z_off64_t)); local z_size_t gz_write OF((gz_statep, voidpc, z_size_t)); /* Initialize state for writing a gzip file. Mark initialization by setting state->size to non-zero. Return -1 on a memory allocation failure, or 0 on success. */ local int gz_init(state) gz_statep state; { int ret; z_streamp strm = &(state->strm); /* allocate input buffer (double size for gzprintf) */ state->in = (unsigned char *)malloc(state->want << 1); if (state->in == NULL) { gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } /* only need output buffer and deflate state if compressing */ if (!state->direct) { /* allocate output buffer */ state->out = (unsigned char *)malloc(state->want); if (state->out == NULL) { free(state->in); gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } /* allocate deflate memory, set up for gzip compression */ strm->zalloc = Z_NULL; strm->zfree = Z_NULL; strm->opaque = Z_NULL; ret = deflateInit2(strm, state->level, Z_DEFLATED, MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy); if (ret != Z_OK) { free(state->out); free(state->in); gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } strm->next_in = NULL; } /* mark state as initialized */ state->size = state->want; /* initialize write buffer if compressing */ if (!state->direct) { strm->avail_out = state->size; strm->next_out = state->out; state->x.next = strm->next_out; } return 0; } /* Compress whatever is at avail_in and next_in and write to the output file. Return -1 if there is an error writing to the output file or if gz_init() fails to allocate memory, otherwise 0. flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH, then the deflate() state is reset to start a new gzip stream. If gz->direct is true, then simply write to the output file without compressing, and ignore flush. */ local int gz_comp(state, flush) gz_statep state; int flush; { int ret, writ; unsigned have, put, max = ((unsigned)-1 >> 2) + 1; z_streamp strm = &(state->strm); /* allocate memory if this is the first time through */ if (state->size == 0 && gz_init(state) == -1) return -1; /* write directly if requested */ if (state->direct) { while (strm->avail_in) { put = strm->avail_in > max ? max : strm->avail_in; writ = write(state->fd, strm->next_in, put); if (writ < 0) { gz_error(state, Z_ERRNO, zstrerror()); return -1; } strm->avail_in -= (unsigned)writ; strm->next_in += writ; } return 0; } /* run deflate() on provided input until it produces no more output */ ret = Z_OK; do { /* write out current buffer contents if full, or if flushing, but if doing Z_FINISH then don't write until we get to Z_STREAM_END */ if (strm->avail_out == 0 || (flush != Z_NO_FLUSH && (flush != Z_FINISH || ret == Z_STREAM_END))) { while (strm->next_out > state->x.next) { put = strm->next_out - state->x.next > (int)max ? max : (unsigned)(strm->next_out - state->x.next); writ = write(state->fd, state->x.next, put); if (writ < 0) { gz_error(state, Z_ERRNO, zstrerror()); return -1; } state->x.next += writ; } if (strm->avail_out == 0) { strm->avail_out = state->size; strm->next_out = state->out; state->x.next = state->out; } } /* compress */ have = strm->avail_out; ret = deflate(strm, flush); if (ret == Z_STREAM_ERROR) { gz_error(state, Z_STREAM_ERROR, "internal error: deflate stream corrupt"); return -1; } have -= strm->avail_out; } while (have); /* if that completed a deflate stream, allow another to start */ if (flush == Z_FINISH) deflateReset(strm); /* all done, no errors */ return 0; } /* Compress len zeros to output. Return -1 on a write error or memory allocation failure by gz_comp(), or 0 on success. */ local int gz_zero(state, len) gz_statep state; z_off64_t len; { int first; unsigned n; z_streamp strm = &(state->strm); /* consume whatever's left in the input buffer */ if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) return -1; /* compress len zeros (len guaranteed > 0) */ first = 1; while (len) { n = GT_OFF(state->size) || (z_off64_t)state->size > len ? (unsigned)len : state->size; if (first) { memset(state->in, 0, n); first = 0; } strm->avail_in = n; strm->next_in = state->in; state->x.pos += n; if (gz_comp(state, Z_NO_FLUSH) == -1) return -1; len -= n; } return 0; } /* Write len bytes from buf to file. Return the number of bytes written. If the returned value is less than len, then there was an error. */ local z_size_t gz_write(state, buf, len) gz_statep state; voidpc buf; z_size_t len; { z_size_t put = len; /* if len is zero, avoid unnecessary operations */ if (len == 0) return 0; /* allocate memory if this is the first time through */ if (state->size == 0 && gz_init(state) == -1) return 0; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return 0; } /* for small len, copy to input buffer, otherwise compress directly */ if (len < state->size) { /* copy to input buffer, compress when full */ do { unsigned have, copy; if (state->strm.avail_in == 0) state->strm.next_in = state->in; have = (unsigned)((state->strm.next_in + state->strm.avail_in) - state->in); copy = state->size - have; if (copy > len) copy = len; memcpy(state->in + have, buf, copy); state->strm.avail_in += copy; state->x.pos += copy; buf = (const char *)buf + copy; len -= copy; if (len && gz_comp(state, Z_NO_FLUSH) == -1) return 0; } while (len); } else { /* consume whatever's left in the input buffer */ if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1) return 0; /* directly compress user buffer to file */ state->strm.next_in = (z_const Bytef *)buf; do { unsigned n = (unsigned)-1; if (n > len) n = len; state->strm.avail_in = n; state->x.pos += n; if (gz_comp(state, Z_NO_FLUSH) == -1) return 0; len -= n; } while (len); } /* input was all buffered or compressed */ return put; } /* -- see zlib.h -- */ int ZEXPORT gzwrite(file, buf, len) gzFile file; voidpc buf; unsigned len; { gz_statep state; /* get internal structure */ if (file == NULL) return 0; state = (gz_statep)file; /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return 0; /* since an int is returned, make sure len fits in one, otherwise return with an error (this avoids a flaw in the interface) */ if ((int)len < 0) { gz_error(state, Z_DATA_ERROR, "requested length does not fit in int"); return 0; } /* write len bytes from buf (the return value will fit in an int) */ return (int)gz_write(state, buf, len); } /* -- see zlib.h -- */ z_size_t ZEXPORT gzfwrite(buf, size, nitems, file) voidpc buf; z_size_t size; z_size_t nitems; gzFile file; { z_size_t len; gz_statep state; /* get internal structure */ if (file == NULL) return 0; state = (gz_statep)file; /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return 0; /* compute bytes to read -- error on overflow */ len = nitems * size; if (size && len / size != nitems) { gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t"); return 0; } /* write len bytes to buf, return the number of full items written */ return len ? gz_write(state, buf, len) / size : 0; } /* -- see zlib.h -- */ int ZEXPORT gzputc(file, c) gzFile file; int c; { unsigned have; unsigned char buf[1]; gz_statep state; z_streamp strm; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; strm = &(state->strm); /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return -1; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return -1; } /* try writing to input buffer for speed (state->size == 0 if buffer not initialized) */ if (state->size) { if (strm->avail_in == 0) strm->next_in = state->in; have = (unsigned)((strm->next_in + strm->avail_in) - state->in); if (have < state->size) { state->in[have] = (unsigned char)c; strm->avail_in++; state->x.pos++; return c & 0xff; } } /* no room in buffer or not initialized, use gz_write() */ buf[0] = (unsigned char)c; if (gz_write(state, buf, 1) != 1) return -1; return c & 0xff; } /* -- see zlib.h -- */ int ZEXPORT gzputs(file, str) gzFile file; const char *str; { int ret; z_size_t len; gz_statep state; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return -1; /* write string */ len = strlen(str); ret = gz_write(state, str, len); return ret == 0 && len != 0 ? -1 : ret; } #if defined(STDC) || defined(Z_HAVE_STDARG_H) #include /* -- see zlib.h -- */ int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va) { int len; unsigned left; char *next; gz_statep state; z_streamp strm; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; strm = &(state->strm); /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return Z_STREAM_ERROR; /* make sure we have some buffer space */ if (state->size == 0 && gz_init(state) == -1) return state->err; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return state->err; } /* do the printf() into the input buffer, put length in len -- the input buffer is double-sized just for this function, so there is guaranteed to be state->size bytes available after the current contents */ if (strm->avail_in == 0) strm->next_in = state->in; next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in); next[state->size - 1] = 0; #ifdef NO_vsnprintf # ifdef HAS_vsprintf_void (void)vsprintf(next, format, va); for (len = 0; len < state->size; len++) if (next[len] == 0) break; # else len = vsprintf(next, format, va); # endif #else # ifdef HAS_vsnprintf_void (void)vsnprintf(next, state->size, format, va); len = strlen(next); # else len = vsnprintf(next, state->size, format, va); # endif #endif /* check that printf() results fit in buffer */ if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0) return 0; /* update buffer and position, compress first half if past that */ strm->avail_in += (unsigned)len; state->x.pos += len; if (strm->avail_in >= state->size) { left = strm->avail_in - state->size; strm->avail_in = state->size; if (gz_comp(state, Z_NO_FLUSH) == -1) return state->err; memcpy(state->in, state->in + state->size, left); strm->next_in = state->in; strm->avail_in = left; } return len; } int ZEXPORTVA gzprintf(gzFile file, const char *format, ...) { va_list va; int ret; va_start(va, format); ret = gzvprintf(file, format, va); va_end(va); return ret; } #else /* !STDC && !Z_HAVE_STDARG_H */ /* -- see zlib.h -- */ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20) gzFile file; const char *format; int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20; { unsigned len, left; char *next; gz_statep state; z_streamp strm; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; strm = &(state->strm); /* check that can really pass pointer in ints */ if (sizeof(int) != sizeof(void *)) return Z_STREAM_ERROR; /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return Z_STREAM_ERROR; /* make sure we have some buffer space */ if (state->size == 0 && gz_init(state) == -1) return state->error; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return state->error; } /* do the printf() into the input buffer, put length in len -- the input buffer is double-sized just for this function, so there is guaranteed to be state->size bytes available after the current contents */ if (strm->avail_in == 0) strm->next_in = state->in; next = (char *)(strm->next_in + strm->avail_in); next[state->size - 1] = 0; #ifdef NO_snprintf # ifdef HAS_sprintf_void sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); for (len = 0; len < size; len++) if (next[len] == 0) break; # else len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); # endif #else # ifdef HAS_snprintf_void snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); len = strlen(next); # else len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); # endif #endif /* check that printf() results fit in buffer */ if (len == 0 || len >= state->size || next[state->size - 1] != 0) return 0; /* update buffer and position, compress first half if past that */ strm->avail_in += len; state->x.pos += len; if (strm->avail_in >= state->size) { left = strm->avail_in - state->size; strm->avail_in = state->size; if (gz_comp(state, Z_NO_FLUSH) == -1) return state->err; memcpy(state->in, state->in + state->size, left); strm->next_in = state->in; strm->avail_in = left; } return (int)len; } #endif /* -- see zlib.h -- */ int ZEXPORT gzflush(file, flush) gzFile file; int flush; { gz_statep state; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return Z_STREAM_ERROR; /* check flush parameter */ if (flush < 0 || flush > Z_FINISH) return Z_STREAM_ERROR; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return state->err; } /* compress remaining data with requested flush */ (void)gz_comp(state, flush); return state->err; } /* -- see zlib.h -- */ int ZEXPORT gzsetparams(file, level, strategy) gzFile file; int level; int strategy; { gz_statep state; z_streamp strm; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; strm = &(state->strm); /* check that we're writing and that there's no error */ if (state->mode != GZ_WRITE || state->err != Z_OK) return Z_STREAM_ERROR; /* if no change is requested, then do nothing */ if (level == state->level && strategy == state->strategy) return Z_OK; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) return state->err; } /* change compression parameters for subsequent input */ if (state->size) { /* flush previous input with previous parameters before changing */ if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1) return state->err; deflateParams(strm, level, strategy); } state->level = level; state->strategy = strategy; return Z_OK; } /* -- see zlib.h -- */ int ZEXPORT gzclose_w(file) gzFile file; { int ret = Z_OK; gz_statep state; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; /* check that we're writing */ if (state->mode != GZ_WRITE) return Z_STREAM_ERROR; /* check for seek request */ if (state->seek) { state->seek = 0; if (gz_zero(state, state->skip) == -1) ret = state->err; } /* flush, free memory, and close file */ if (gz_comp(state, Z_FINISH) == -1) ret = state->err; if (state->size) { if (!state->direct) { (void)deflateEnd(&(state->strm)); free(state->out); } free(state->in); } gz_error(state, Z_OK, NULL); free(state->path); if (close(state->fd) == -1) ret = Z_ERRNO; free(state); return ret; } zlib-1.2.11.dfsg/zutil.c0000644000175000017500000001621013036730604014647 0ustar brooniebroonie/* zutil.c -- target dependent utility functions for the compression library * Copyright (C) 1995-2017 Jean-loup Gailly * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #include "zutil.h" #ifndef Z_SOLO # include "gzguts.h" #endif z_const char * const z_errmsg[10] = { (z_const char *)"need dictionary", /* Z_NEED_DICT 2 */ (z_const char *)"stream end", /* Z_STREAM_END 1 */ (z_const char *)"", /* Z_OK 0 */ (z_const char *)"file error", /* Z_ERRNO (-1) */ (z_const char *)"stream error", /* Z_STREAM_ERROR (-2) */ (z_const char *)"data error", /* Z_DATA_ERROR (-3) */ (z_const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */ (z_const char *)"buffer error", /* Z_BUF_ERROR (-5) */ (z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */ (z_const char *)"" }; const char * ZEXPORT zlibVersion() { return ZLIB_VERSION; } uLong ZEXPORT zlibCompileFlags() { uLong flags; flags = 0; switch ((int)(sizeof(uInt))) { case 2: break; case 4: flags += 1; break; case 8: flags += 2; break; default: flags += 3; } switch ((int)(sizeof(uLong))) { case 2: break; case 4: flags += 1 << 2; break; case 8: flags += 2 << 2; break; default: flags += 3 << 2; } switch ((int)(sizeof(voidpf))) { case 2: break; case 4: flags += 1 << 4; break; case 8: flags += 2 << 4; break; default: flags += 3 << 4; } switch ((int)(sizeof(z_off_t))) { case 2: break; case 4: flags += 1 << 6; break; case 8: flags += 2 << 6; break; default: flags += 3 << 6; } #ifdef ZLIB_DEBUG flags += 1 << 8; #endif #if defined(ASMV) || defined(ASMINF) flags += 1 << 9; #endif #ifdef ZLIB_WINAPI flags += 1 << 10; #endif #ifdef BUILDFIXED flags += 1 << 12; #endif #ifdef DYNAMIC_CRC_TABLE flags += 1 << 13; #endif #ifdef NO_GZCOMPRESS flags += 1L << 16; #endif #ifdef NO_GZIP flags += 1L << 17; #endif #ifdef PKZIP_BUG_WORKAROUND flags += 1L << 20; #endif #ifdef FASTEST flags += 1L << 21; #endif #if defined(STDC) || defined(Z_HAVE_STDARG_H) # ifdef NO_vsnprintf flags += 1L << 25; # ifdef HAS_vsprintf_void flags += 1L << 26; # endif # else # ifdef HAS_vsnprintf_void flags += 1L << 26; # endif # endif #else flags += 1L << 24; # ifdef NO_snprintf flags += 1L << 25; # ifdef HAS_sprintf_void flags += 1L << 26; # endif # else # ifdef HAS_snprintf_void flags += 1L << 26; # endif # endif #endif return flags; } #ifdef ZLIB_DEBUG #include # ifndef verbose # define verbose 0 # endif int ZLIB_INTERNAL z_verbose = verbose; void ZLIB_INTERNAL z_error (m) char *m; { fprintf(stderr, "%s\n", m); exit(1); } #endif /* exported to allow conversion of error code to string for compress() and * uncompress() */ const char * ZEXPORT zError(err) int err; { return ERR_MSG(err); } #if defined(_WIN32_WCE) /* The Microsoft C Run-Time Library for Windows CE doesn't have * errno. We define it as a global variable to simplify porting. * Its value is always 0 and should not be used. */ int errno = 0; #endif #ifndef HAVE_MEMCPY void ZLIB_INTERNAL zmemcpy(dest, source, len) Bytef* dest; const Bytef* source; uInt len; { if (len == 0) return; do { *dest++ = *source++; /* ??? to be unrolled */ } while (--len != 0); } int ZLIB_INTERNAL zmemcmp(s1, s2, len) const Bytef* s1; const Bytef* s2; uInt len; { uInt j; for (j = 0; j < len; j++) { if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1; } return 0; } void ZLIB_INTERNAL zmemzero(dest, len) Bytef* dest; uInt len; { if (len == 0) return; do { *dest++ = 0; /* ??? to be unrolled */ } while (--len != 0); } #endif #ifndef Z_SOLO #ifdef SYS16BIT #ifdef __TURBOC__ /* Turbo C in 16-bit mode */ # define MY_ZCALLOC /* Turbo C malloc() does not allow dynamic allocation of 64K bytes * and farmalloc(64K) returns a pointer with an offset of 8, so we * must fix the pointer. Warning: the pointer must be put back to its * original form in order to free it, use zcfree(). */ #define MAX_PTR 10 /* 10*64K = 640K */ local int next_ptr = 0; typedef struct ptr_table_s { voidpf org_ptr; voidpf new_ptr; } ptr_table; local ptr_table table[MAX_PTR]; /* This table is used to remember the original form of pointers * to large buffers (64K). Such pointers are normalized with a zero offset. * Since MSDOS is not a preemptive multitasking OS, this table is not * protected from concurrent access. This hack doesn't work anyway on * a protected system like OS/2. Use Microsoft C instead. */ voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size) { voidpf buf; ulg bsize = (ulg)items*size; (void)opaque; /* If we allocate less than 65520 bytes, we assume that farmalloc * will return a usable pointer which doesn't have to be normalized. */ if (bsize < 65520L) { buf = farmalloc(bsize); if (*(ush*)&buf != 0) return buf; } else { buf = farmalloc(bsize + 16L); } if (buf == NULL || next_ptr >= MAX_PTR) return NULL; table[next_ptr].org_ptr = buf; /* Normalize the pointer to seg:0 */ *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4; *(ush*)&buf = 0; table[next_ptr++].new_ptr = buf; return buf; } void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) { int n; (void)opaque; if (*(ush*)&ptr != 0) { /* object < 64K */ farfree(ptr); return; } /* Find the original pointer */ for (n = 0; n < next_ptr; n++) { if (ptr != table[n].new_ptr) continue; farfree(table[n].org_ptr); while (++n < next_ptr) { table[n-1] = table[n]; } next_ptr--; return; } Assert(0, "zcfree: ptr not found"); } #endif /* __TURBOC__ */ #ifdef M_I86 /* Microsoft C in 16-bit mode */ # define MY_ZCALLOC #if (!defined(_MSC_VER) || (_MSC_VER <= 600)) # define _halloc halloc # define _hfree hfree #endif voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size) { (void)opaque; return _halloc((long)items, size); } void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) { (void)opaque; _hfree(ptr); } #endif /* M_I86 */ #endif /* SYS16BIT */ #ifndef MY_ZCALLOC /* Any system without a special alloc function */ #ifndef STDC extern voidp malloc OF((uInt size)); extern voidp calloc OF((uInt items, uInt size)); extern void free OF((voidpf ptr)); #endif voidpf ZLIB_INTERNAL zcalloc (opaque, items, size) voidpf opaque; unsigned items; unsigned size; { (void)opaque; return sizeof(uInt) > 2 ? 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OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o OBJC = $(OBJZ) $(OBJG) PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG) # to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo OBJA = PIC_OBJA = OBJS = $(OBJC) $(OBJA) PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA) all: static shared static: example$(EXE) minigzip$(EXE) shared: examplesh$(EXE) minigzipsh$(EXE) all64: example64$(EXE) minigzip64$(EXE) check: test test: all teststatic testshared teststatic: static @TMPST=tmpst_$$; \ if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \ echo ' *** zlib test OK ***'; \ else \ echo ' *** zlib test FAILED ***'; false; \ fi; \ rm -f $$TMPST testshared: shared @LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \ LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \ DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \ SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \ TMPSH=tmpsh_$$; \ if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \ echo ' *** zlib shared test OK ***'; \ else \ echo ' *** zlib shared test FAILED ***'; false; \ fi; \ rm -f $$TMPSH test64: all64 @TMP64=tmp64_$$; \ if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \ echo ' *** zlib 64-bit test OK ***'; \ else \ echo ' *** zlib 64-bit test FAILED ***'; false; \ fi; \ rm -f $$TMP64 infcover.o: $(SRCDIR)test/infcover.c $(SRCDIR)zlib.h zconf.h $(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/infcover.c infcover: infcover.o libz.a $(CC) $(CFLAGS) -o $@ infcover.o libz.a cover: infcover rm -f *.gcda ./infcover gcov inf*.c libz.a: $(OBJS) $(AR) $(ARFLAGS) $@ $(OBJS) -@ ($(RANLIB) $@ || true) >/dev/null 2>&1 match.o: match.S $(CPP) match.S > _match.s $(CC) -c _match.s mv _match.o match.o rm -f _match.s match.lo: match.S $(CPP) match.S > _match.s $(CC) -c -fPIC _match.s mv _match.o match.lo rm -f _match.s example.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h $(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/example.c minigzip.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h $(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/minigzip.c example64.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h $(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/example.c minigzip64.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h $(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/minigzip.c adler32.o: $(SRCDIR)adler32.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)adler32.c crc32.o: $(SRCDIR)crc32.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)crc32.c deflate.o: $(SRCDIR)deflate.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)deflate.c infback.o: $(SRCDIR)infback.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)infback.c inffast.o: $(SRCDIR)inffast.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inffast.c inflate.o: $(SRCDIR)inflate.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inflate.c inftrees.o: $(SRCDIR)inftrees.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inftrees.c trees.o: $(SRCDIR)trees.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)trees.c zutil.o: $(SRCDIR)zutil.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)zutil.c compress.o: $(SRCDIR)compress.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)compress.c uncompr.o: $(SRCDIR)uncompr.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)uncompr.c gzclose.o: $(SRCDIR)gzclose.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzclose.c gzlib.o: $(SRCDIR)gzlib.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzlib.c gzread.o: $(SRCDIR)gzread.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzread.c gzwrite.o: $(SRCDIR)gzwrite.c $(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzwrite.c adler32.lo: $(SRCDIR)adler32.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/adler32.o $(SRCDIR)adler32.c -@mv objs/adler32.o $@ crc32.lo: $(SRCDIR)crc32.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/crc32.o $(SRCDIR)crc32.c -@mv objs/crc32.o $@ deflate.lo: $(SRCDIR)deflate.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/deflate.o $(SRCDIR)deflate.c -@mv objs/deflate.o $@ infback.lo: $(SRCDIR)infback.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/infback.o $(SRCDIR)infback.c -@mv objs/infback.o $@ inffast.lo: $(SRCDIR)inffast.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inffast.o $(SRCDIR)inffast.c -@mv objs/inffast.o $@ inflate.lo: $(SRCDIR)inflate.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inflate.o $(SRCDIR)inflate.c -@mv objs/inflate.o $@ inftrees.lo: $(SRCDIR)inftrees.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inftrees.o $(SRCDIR)inftrees.c -@mv objs/inftrees.o $@ trees.lo: $(SRCDIR)trees.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/trees.o $(SRCDIR)trees.c -@mv objs/trees.o $@ zutil.lo: $(SRCDIR)zutil.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/zutil.o $(SRCDIR)zutil.c -@mv objs/zutil.o $@ compress.lo: $(SRCDIR)compress.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/compress.o $(SRCDIR)compress.c -@mv objs/compress.o $@ uncompr.lo: $(SRCDIR)uncompr.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/uncompr.o $(SRCDIR)uncompr.c -@mv objs/uncompr.o $@ gzclose.lo: $(SRCDIR)gzclose.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzclose.o $(SRCDIR)gzclose.c -@mv objs/gzclose.o $@ gzlib.lo: $(SRCDIR)gzlib.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzlib.o $(SRCDIR)gzlib.c -@mv objs/gzlib.o $@ gzread.lo: $(SRCDIR)gzread.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzread.o $(SRCDIR)gzread.c -@mv objs/gzread.o $@ gzwrite.lo: $(SRCDIR)gzwrite.c -@mkdir objs 2>/dev/null || test -d objs $(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzwrite.o $(SRCDIR)gzwrite.c -@mv objs/gzwrite.o $@ placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a $(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS) rm -f $(SHAREDLIB) $(SHAREDLIBM) ln -s $@ $(SHAREDLIB) ln -s $@ $(SHAREDLIBM) -@rmdir objs example$(EXE): example.o $(STATICLIB) $(CC) $(CFLAGS) -o $@ example.o $(TEST_LDFLAGS) minigzip$(EXE): minigzip.o $(STATICLIB) $(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS) examplesh$(EXE): example.o $(SHAREDLIBV) $(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV) minigzipsh$(EXE): minigzip.o $(SHAREDLIBV) $(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV) example64$(EXE): example64.o $(STATICLIB) $(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS) minigzip64$(EXE): minigzip64.o $(STATICLIB) $(CC) $(CFLAGS) -o $@ minigzip64.o $(TEST_LDFLAGS) install-libs: $(LIBS) -@if [ ! -d $(DESTDIR)$(exec_prefix) ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi -@if [ ! -d $(DESTDIR)$(libdir) ]; then mkdir -p $(DESTDIR)$(libdir); fi -@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi -@if [ ! -d $(DESTDIR)$(man3dir) ]; then mkdir -p $(DESTDIR)$(man3dir); fi -@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi rm -f $(DESTDIR)$(libdir)/$(STATICLIB) cp $(STATICLIB) $(DESTDIR)$(libdir) chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB) -@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1 -@if test -n "$(SHAREDLIBV)"; then \ rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \ cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \ echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \ chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \ echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \ rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \ ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \ ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \ ($(LDCONFIG) || true) >/dev/null 2>&1; \ fi rm -f $(DESTDIR)$(man3dir)/zlib.3 cp $(SRCDIR)zlib.3 $(DESTDIR)$(man3dir) chmod 644 $(DESTDIR)$(man3dir)/zlib.3 rm -f $(DESTDIR)$(pkgconfigdir)/zlib.pc cp zlib.pc $(DESTDIR)$(pkgconfigdir) chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc # The ranlib in install is needed on NeXTSTEP which checks file times # ldconfig is for Linux install: install-libs -@if [ ! -d $(DESTDIR)$(includedir) ]; then mkdir -p $(DESTDIR)$(includedir); fi rm -f $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h cp $(SRCDIR)zlib.h zconf.h $(DESTDIR)$(includedir) chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h uninstall: cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h cd $(DESTDIR)$(libdir) && rm -f libz.a; \ if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \ rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \ fi cd $(DESTDIR)$(man3dir) && rm -f zlib.3 cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc docs: zlib.3.pdf zlib.3.pdf: $(SRCDIR)zlib.3 groff -mandoc -f H -T ps $(SRCDIR)zlib.3 | ps2pdf - $@ zconf.h.cmakein: $(SRCDIR)zconf.h.in -@ TEMPFILE=zconfh_$$; \ echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\ sed -f $$TEMPFILE $(SRCDIR)zconf.h.in > $@ &&\ touch -r $(SRCDIR)zconf.h.in $@ &&\ rm $$TEMPFILE zconf: $(SRCDIR)zconf.h.in cp -p $(SRCDIR)zconf.h.in zconf.h mostlyclean: clean clean: rm -f *.o *.lo *~ \ example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \ example64$(EXE) minigzip64$(EXE) \ infcover \ libz.* foo.gz so_locations \ _match.s maketree contrib/infback9/*.o rm -rf objs rm -f *.gcda *.gcno *.gcov rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov maintainer-clean: distclean distclean: clean zconf zconf.h.cmakein docs rm -f Makefile zlib.pc configure.log -@rm -f .DS_Store @if [ -f Makefile.in ]; then \ printf 'all:\n\t-@echo "Please use ./configure first. Thank you."\n' > Makefile ; \ printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile ; \ touch -r $(SRCDIR)Makefile.in Makefile ; fi @if [ ! -f zconf.h.in ]; then rm -f zconf.h zconf.h.cmakein ; fi @if [ ! -f zlib.3 ]; then rm -f zlib.3.pdf ; fi tags: etags $(SRCDIR)*.[ch] adler32.o zutil.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h gzclose.o gzlib.o gzread.o gzwrite.o: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h compress.o example.o minigzip.o uncompr.o: $(SRCDIR)zlib.h zconf.h crc32.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h deflate.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h infback.o inflate.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h inffast.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h inftrees.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h trees.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h adler32.lo zutil.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h gzclose.lo gzlib.lo gzread.lo gzwrite.lo: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h compress.lo example.lo minigzip.lo uncompr.lo: $(SRCDIR)zlib.h zconf.h crc32.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h deflate.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h infback.lo inflate.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h inffast.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h inftrees.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h trees.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h zlib-1.2.11.dfsg/zlib.map0000644000175000017500000000266113032130646014774 0ustar brooniebroonieZLIB_1.2.0 { global: compressBound; deflateBound; inflateBack; inflateBackEnd; inflateBackInit_; inflateCopy; local: deflate_copyright; inflate_copyright; inflate_fast; inflate_table; zcalloc; zcfree; z_errmsg; gz_error; gz_intmax; _*; }; ZLIB_1.2.0.2 { gzclearerr; gzungetc; zlibCompileFlags; } ZLIB_1.2.0; ZLIB_1.2.0.8 { deflatePrime; } ZLIB_1.2.0.2; ZLIB_1.2.2 { adler32_combine; crc32_combine; deflateSetHeader; inflateGetHeader; } ZLIB_1.2.0.8; ZLIB_1.2.2.3 { deflateTune; gzdirect; } ZLIB_1.2.2; ZLIB_1.2.2.4 { inflatePrime; } ZLIB_1.2.2.3; ZLIB_1.2.3.3 { adler32_combine64; crc32_combine64; gzopen64; gzseek64; gztell64; inflateUndermine; } ZLIB_1.2.2.4; ZLIB_1.2.3.4 { inflateReset2; inflateMark; } ZLIB_1.2.3.3; ZLIB_1.2.3.5 { gzbuffer; gzoffset; gzoffset64; gzclose_r; gzclose_w; } ZLIB_1.2.3.4; ZLIB_1.2.5.1 { deflatePending; } ZLIB_1.2.3.5; ZLIB_1.2.5.2 { deflateResetKeep; gzgetc_; inflateResetKeep; } ZLIB_1.2.5.1; ZLIB_1.2.7.1 { inflateGetDictionary; gzvprintf; } ZLIB_1.2.5.2; ZLIB_1.2.9 { inflateCodesUsed; inflateValidate; uncompress2; gzfread; gzfwrite; deflateGetDictionary; adler32_z; crc32_z; } ZLIB_1.2.7.1; zlib-1.2.11.dfsg/inflate.c0000644000175000017500000015302013032130646015117 0ustar brooniebroonie/* inflate.c -- zlib decompression * Copyright (C) 1995-2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* * Change history: * * 1.2.beta0 24 Nov 2002 * - First version -- complete rewrite of inflate to simplify code, avoid * creation of window when not needed, minimize use of window when it is * needed, make inffast.c even faster, implement gzip decoding, and to * improve code readability and style over the previous zlib inflate code * * 1.2.beta1 25 Nov 2002 * - Use pointers for available input and output checking in inffast.c * - Remove input and output counters in inffast.c * - Change inffast.c entry and loop from avail_in >= 7 to >= 6 * - Remove unnecessary second byte pull from length extra in inffast.c * - Unroll direct copy to three copies per loop in inffast.c * * 1.2.beta2 4 Dec 2002 * - Change external routine names to reduce potential conflicts * - Correct filename to inffixed.h for fixed tables in inflate.c * - Make hbuf[] unsigned char to match parameter type in inflate.c * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset) * to avoid negation problem on Alphas (64 bit) in inflate.c * * 1.2.beta3 22 Dec 2002 * - Add comments on state->bits assertion in inffast.c * - Add comments on op field in inftrees.h * - Fix bug in reuse of allocated window after inflateReset() * - Remove bit fields--back to byte structure for speed * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths * - Change post-increments to pre-increments in inflate_fast(), PPC biased? * - Add compile time option, POSTINC, to use post-increments instead (Intel?) * - Make MATCH copy in inflate() much faster for when inflate_fast() not used * - Use local copies of stream next and avail values, as well as local bit * buffer and bit count in inflate()--for speed when inflate_fast() not used * * 1.2.beta4 1 Jan 2003 * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings * - Move a comment on output buffer sizes from inffast.c to inflate.c * - Add comments in inffast.c to introduce the inflate_fast() routine * - Rearrange window copies in inflate_fast() for speed and simplification * - Unroll last copy for window match in inflate_fast() * - Use local copies of window variables in inflate_fast() for speed * - Pull out common wnext == 0 case for speed in inflate_fast() * - Make op and len in inflate_fast() unsigned for consistency * - Add FAR to lcode and dcode declarations in inflate_fast() * - Simplified bad distance check in inflate_fast() * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new * source file infback.c to provide a call-back interface to inflate for * programs like gzip and unzip -- uses window as output buffer to avoid * window copying * * 1.2.beta5 1 Jan 2003 * - Improved inflateBack() interface to allow the caller to provide initial * input in strm. * - Fixed stored blocks bug in inflateBack() * * 1.2.beta6 4 Jan 2003 * - Added comments in inffast.c on effectiveness of POSTINC * - Typecasting all around to reduce compiler warnings * - Changed loops from while (1) or do {} while (1) to for (;;), again to * make compilers happy * - Changed type of window in inflateBackInit() to unsigned char * * * 1.2.beta7 27 Jan 2003 * - Changed many types to unsigned or unsigned short to avoid warnings * - Added inflateCopy() function * * 1.2.0 9 Mar 2003 * - Changed inflateBack() interface to provide separate opaque descriptors * for the in() and out() functions * - Changed inflateBack() argument and in_func typedef to swap the length * and buffer address return values for the input function * - Check next_in and next_out for Z_NULL on entry to inflate() * * The history for versions after 1.2.0 are in ChangeLog in zlib distribution. */ #include "zutil.h" #include "inftrees.h" #include "inflate.h" #include "inffast.h" #ifdef MAKEFIXED # ifndef BUILDFIXED # define BUILDFIXED # endif #endif /* function prototypes */ local int inflateStateCheck OF((z_streamp strm)); local void fixedtables OF((struct inflate_state FAR *state)); local int updatewindow OF((z_streamp strm, const unsigned char FAR *end, unsigned copy)); #ifdef BUILDFIXED void makefixed OF((void)); #endif local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf, unsigned len)); local int inflateStateCheck(strm) z_streamp strm; { struct inflate_state FAR *state; if (strm == Z_NULL || strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) return 1; state = (struct inflate_state FAR *)strm->state; if (state == Z_NULL || state->strm != strm || state->mode < HEAD || state->mode > SYNC) return 1; return 0; } int ZEXPORT inflateResetKeep(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; strm->total_in = strm->total_out = state->total = 0; strm->msg = Z_NULL; if (state->wrap) /* to support ill-conceived Java test suite */ strm->adler = state->wrap & 1; state->mode = HEAD; state->last = 0; state->havedict = 0; state->dmax = 32768U; state->head = Z_NULL; state->hold = 0; state->bits = 0; state->lencode = state->distcode = state->next = state->codes; state->sane = 1; state->back = -1; Tracev((stderr, "inflate: reset\n")); return Z_OK; } int ZEXPORT inflateReset(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; state->wsize = 0; state->whave = 0; state->wnext = 0; return inflateResetKeep(strm); } int ZEXPORT inflateReset2(strm, windowBits) z_streamp strm; int windowBits; { int wrap; struct inflate_state FAR *state; /* get the state */ if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; /* extract wrap request from windowBits parameter */ if (windowBits < 0) { wrap = 0; windowBits = -windowBits; } else { wrap = (windowBits >> 4) + 5; #ifdef GUNZIP if (windowBits < 48) windowBits &= 15; #endif } /* set number of window bits, free window if different */ if (windowBits && (windowBits < 8 || windowBits > 15)) return Z_STREAM_ERROR; if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) { ZFREE(strm, state->window); state->window = Z_NULL; } /* update state and reset the rest of it */ state->wrap = wrap; state->wbits = (unsigned)windowBits; return inflateReset(strm); } int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size) z_streamp strm; int windowBits; const char *version; int stream_size; { int ret; struct inflate_state FAR *state; if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || stream_size != (int)(sizeof(z_stream))) return Z_VERSION_ERROR; if (strm == Z_NULL) return Z_STREAM_ERROR; strm->msg = Z_NULL; /* in case we return an error */ if (strm->zalloc == (alloc_func)0) { #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zalloc = zcalloc; strm->opaque = (voidpf)0; #endif } if (strm->zfree == (free_func)0) #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zfree = zcfree; #endif state = (struct inflate_state FAR *) ZALLOC(strm, 1, sizeof(struct inflate_state)); if (state == Z_NULL) return Z_MEM_ERROR; Tracev((stderr, "inflate: allocated\n")); strm->state = (struct internal_state FAR *)state; state->strm = strm; state->window = Z_NULL; state->mode = HEAD; /* to pass state test in inflateReset2() */ ret = inflateReset2(strm, windowBits); if (ret != Z_OK) { ZFREE(strm, state); strm->state = Z_NULL; } return ret; } int ZEXPORT inflateInit_(strm, version, stream_size) z_streamp strm; const char *version; int stream_size; { return inflateInit2_(strm, DEF_WBITS, version, stream_size); } int ZEXPORT inflatePrime(strm, bits, value) z_streamp strm; int bits; int value; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (bits < 0) { state->hold = 0; state->bits = 0; return Z_OK; } if (bits > 16 || state->bits + (uInt)bits > 32) return Z_STREAM_ERROR; value &= (1L << bits) - 1; state->hold += (unsigned)value << state->bits; state->bits += (uInt)bits; return Z_OK; } /* Return state with length and distance decoding tables and index sizes set to fixed code decoding. Normally this returns fixed tables from inffixed.h. If BUILDFIXED is defined, then instead this routine builds the tables the first time it's called, and returns those tables the first time and thereafter. This reduces the size of the code by about 2K bytes, in exchange for a little execution time. However, BUILDFIXED should not be used for threaded applications, since the rewriting of the tables and virgin may not be thread-safe. */ local void fixedtables(state) struct inflate_state FAR *state; { #ifdef BUILDFIXED static int virgin = 1; static code *lenfix, *distfix; static code fixed[544]; /* build fixed huffman tables if first call (may not be thread safe) */ if (virgin) { unsigned sym, bits; static code *next; /* literal/length table */ sym = 0; while (sym < 144) state->lens[sym++] = 8; while (sym < 256) state->lens[sym++] = 9; while (sym < 280) state->lens[sym++] = 7; while (sym < 288) state->lens[sym++] = 8; next = fixed; lenfix = next; bits = 9; inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); /* distance table */ sym = 0; while (sym < 32) state->lens[sym++] = 5; distfix = next; bits = 5; inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); /* do this just once */ virgin = 0; } #else /* !BUILDFIXED */ # include "inffixed.h" #endif /* BUILDFIXED */ state->lencode = lenfix; state->lenbits = 9; state->distcode = distfix; state->distbits = 5; } #ifdef MAKEFIXED #include /* Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also defines BUILDFIXED, so the tables are built on the fly. makefixed() writes those tables to stdout, which would be piped to inffixed.h. A small program can simply call makefixed to do this: void makefixed(void); int main(void) { makefixed(); return 0; } Then that can be linked with zlib built with MAKEFIXED defined and run: a.out > inffixed.h */ void makefixed() { unsigned low, size; struct inflate_state state; fixedtables(&state); puts(" /* inffixed.h -- table for decoding fixed codes"); puts(" * Generated automatically by makefixed()."); puts(" */"); puts(""); puts(" /* WARNING: this file should *not* be used by applications."); puts(" It is part of the implementation of this library and is"); puts(" subject to change. Applications should only use zlib.h."); puts(" */"); puts(""); size = 1U << 9; printf(" static const code lenfix[%u] = {", size); low = 0; for (;;) { if ((low % 7) == 0) printf("\n "); printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op, state.lencode[low].bits, state.lencode[low].val); if (++low == size) break; putchar(','); } puts("\n };"); size = 1U << 5; printf("\n static const code distfix[%u] = {", size); low = 0; for (;;) { if ((low % 6) == 0) printf("\n "); printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits, state.distcode[low].val); if (++low == size) break; putchar(','); } puts("\n };"); } #endif /* MAKEFIXED */ /* Update the window with the last wsize (normally 32K) bytes written before returning. If window does not exist yet, create it. This is only called when a window is already in use, or when output has been written during this inflate call, but the end of the deflate stream has not been reached yet. It is also called to create a window for dictionary data when a dictionary is loaded. Providing output buffers larger than 32K to inflate() should provide a speed advantage, since only the last 32K of output is copied to the sliding window upon return from inflate(), and since all distances after the first 32K of output will fall in the output data, making match copies simpler and faster. The advantage may be dependent on the size of the processor's data caches. */ local int updatewindow(strm, end, copy) z_streamp strm; const Bytef *end; unsigned copy; { struct inflate_state FAR *state; unsigned dist; state = (struct inflate_state FAR *)strm->state; /* if it hasn't been done already, allocate space for the window */ if (state->window == Z_NULL) { state->window = (unsigned char FAR *) ZALLOC(strm, 1U << state->wbits, sizeof(unsigned char)); if (state->window == Z_NULL) return 1; } /* if window not in use yet, initialize */ if (state->wsize == 0) { state->wsize = 1U << state->wbits; state->wnext = 0; state->whave = 0; } /* copy state->wsize or less output bytes into the circular window */ if (copy >= state->wsize) { zmemcpy(state->window, end - state->wsize, state->wsize); state->wnext = 0; state->whave = state->wsize; } else { dist = state->wsize - state->wnext; if (dist > copy) dist = copy; zmemcpy(state->window + state->wnext, end - copy, dist); copy -= dist; if (copy) { zmemcpy(state->window, end - copy, copy); state->wnext = copy; state->whave = state->wsize; } else { state->wnext += dist; if (state->wnext == state->wsize) state->wnext = 0; if (state->whave < state->wsize) state->whave += dist; } } return 0; } /* Macros for inflate(): */ /* check function to use adler32() for zlib or crc32() for gzip */ #ifdef GUNZIP # define UPDATE(check, buf, len) \ (state->flags ? crc32(check, buf, len) : adler32(check, buf, len)) #else # define UPDATE(check, buf, len) adler32(check, buf, len) #endif /* check macros for header crc */ #ifdef GUNZIP # define CRC2(check, word) \ do { \ hbuf[0] = (unsigned char)(word); \ hbuf[1] = (unsigned char)((word) >> 8); \ check = crc32(check, hbuf, 2); \ } while (0) # define CRC4(check, word) \ do { \ hbuf[0] = (unsigned char)(word); \ hbuf[1] = (unsigned char)((word) >> 8); \ hbuf[2] = (unsigned char)((word) >> 16); \ hbuf[3] = (unsigned char)((word) >> 24); \ check = crc32(check, hbuf, 4); \ } while (0) #endif /* Load registers with state in inflate() for speed */ #define LOAD() \ do { \ put = strm->next_out; \ left = strm->avail_out; \ next = strm->next_in; \ have = strm->avail_in; \ hold = state->hold; \ bits = state->bits; \ } while (0) /* Restore state from registers in inflate() */ #define RESTORE() \ do { \ strm->next_out = put; \ strm->avail_out = left; \ strm->next_in = next; \ strm->avail_in = have; \ state->hold = hold; \ state->bits = bits; \ } while (0) /* Clear the input bit accumulator */ #define INITBITS() \ do { \ hold = 0; \ bits = 0; \ } while (0) /* Get a byte of input into the bit accumulator, or return from inflate() if there is no input available. */ #define PULLBYTE() \ do { \ if (have == 0) goto inf_leave; \ have--; \ hold += (unsigned long)(*next++) << bits; \ bits += 8; \ } while (0) /* Assure that there are at least n bits in the bit accumulator. If there is not enough available input to do that, then return from inflate(). */ #define NEEDBITS(n) \ do { \ while (bits < (unsigned)(n)) \ PULLBYTE(); \ } while (0) /* Return the low n bits of the bit accumulator (n < 16) */ #define BITS(n) \ ((unsigned)hold & ((1U << (n)) - 1)) /* Remove n bits from the bit accumulator */ #define DROPBITS(n) \ do { \ hold >>= (n); \ bits -= (unsigned)(n); \ } while (0) /* Remove zero to seven bits as needed to go to a byte boundary */ #define BYTEBITS() \ do { \ hold >>= bits & 7; \ bits -= bits & 7; \ } while (0) /* inflate() uses a state machine to process as much input data and generate as much output data as possible before returning. The state machine is structured roughly as follows: for (;;) switch (state) { ... case STATEn: if (not enough input data or output space to make progress) return; ... make progress ... state = STATEm; break; ... } so when inflate() is called again, the same case is attempted again, and if the appropriate resources are provided, the machine proceeds to the next state. The NEEDBITS() macro is usually the way the state evaluates whether it can proceed or should return. NEEDBITS() does the return if the requested bits are not available. The typical use of the BITS macros is: NEEDBITS(n); ... do something with BITS(n) ... DROPBITS(n); where NEEDBITS(n) either returns from inflate() if there isn't enough input left to load n bits into the accumulator, or it continues. BITS(n) gives the low n bits in the accumulator. When done, DROPBITS(n) drops the low n bits off the accumulator. INITBITS() clears the accumulator and sets the number of available bits to zero. BYTEBITS() discards just enough bits to put the accumulator on a byte boundary. After BYTEBITS() and a NEEDBITS(8), then BITS(8) would return the next byte in the stream. NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return if there is no input available. The decoding of variable length codes uses PULLBYTE() directly in order to pull just enough bytes to decode the next code, and no more. Some states loop until they get enough input, making sure that enough state information is maintained to continue the loop where it left off if NEEDBITS() returns in the loop. For example, want, need, and keep would all have to actually be part of the saved state in case NEEDBITS() returns: case STATEw: while (want < need) { NEEDBITS(n); keep[want++] = BITS(n); DROPBITS(n); } state = STATEx; case STATEx: As shown above, if the next state is also the next case, then the break is omitted. A state may also return if there is not enough output space available to complete that state. Those states are copying stored data, writing a literal byte, and copying a matching string. When returning, a "goto inf_leave" is used to update the total counters, update the check value, and determine whether any progress has been made during that inflate() call in order to return the proper return code. Progress is defined as a change in either strm->avail_in or strm->avail_out. When there is a window, goto inf_leave will update the window with the last output written. If a goto inf_leave occurs in the middle of decompression and there is no window currently, goto inf_leave will create one and copy output to the window for the next call of inflate(). In this implementation, the flush parameter of inflate() only affects the return code (per zlib.h). inflate() always writes as much as possible to strm->next_out, given the space available and the provided input--the effect documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers the allocation of and copying into a sliding window until necessary, which provides the effect documented in zlib.h for Z_FINISH when the entire input stream available. So the only thing the flush parameter actually does is: when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it will return Z_BUF_ERROR if it has not reached the end of the stream. */ int ZEXPORT inflate(strm, flush) z_streamp strm; int flush; { struct inflate_state FAR *state; z_const unsigned char FAR *next; /* next input */ unsigned char FAR *put; /* next output */ unsigned have, left; /* available input and output */ unsigned long hold; /* bit buffer */ unsigned bits; /* bits in bit buffer */ unsigned in, out; /* save starting available input and output */ unsigned copy; /* number of stored or match bytes to copy */ unsigned char FAR *from; /* where to copy match bytes from */ code here; /* current decoding table entry */ code last; /* parent table entry */ unsigned len; /* length to copy for repeats, bits to drop */ int ret; /* return code */ #ifdef GUNZIP unsigned char hbuf[4]; /* buffer for gzip header crc calculation */ #endif static const unsigned short order[19] = /* permutation of code lengths */ {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; if (inflateStateCheck(strm) || strm->next_out == Z_NULL || (strm->next_in == Z_NULL && strm->avail_in != 0)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */ LOAD(); in = have; out = left; ret = Z_OK; for (;;) switch (state->mode) { case HEAD: if (state->wrap == 0) { state->mode = TYPEDO; break; } NEEDBITS(16); #ifdef GUNZIP if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */ if (state->wbits == 0) state->wbits = 15; state->check = crc32(0L, Z_NULL, 0); CRC2(state->check, hold); INITBITS(); state->mode = FLAGS; break; } state->flags = 0; /* expect zlib header */ if (state->head != Z_NULL) state->head->done = -1; if (!(state->wrap & 1) || /* check if zlib header allowed */ #else if ( #endif ((BITS(8) << 8) + (hold >> 8)) % 31) { strm->msg = (char *)"incorrect header check"; state->mode = BAD; break; } if (BITS(4) != Z_DEFLATED) { strm->msg = (char *)"unknown compression method"; state->mode = BAD; break; } DROPBITS(4); len = BITS(4) + 8; if (state->wbits == 0) state->wbits = len; if (len > 15 || len > state->wbits) { strm->msg = (char *)"invalid window size"; state->mode = BAD; break; } state->dmax = 1U << len; Tracev((stderr, "inflate: zlib header ok\n")); strm->adler = state->check = adler32(0L, Z_NULL, 0); state->mode = hold & 0x200 ? DICTID : TYPE; INITBITS(); break; #ifdef GUNZIP case FLAGS: NEEDBITS(16); state->flags = (int)(hold); if ((state->flags & 0xff) != Z_DEFLATED) { strm->msg = (char *)"unknown compression method"; state->mode = BAD; break; } if (state->flags & 0xe000) { strm->msg = (char *)"unknown header flags set"; state->mode = BAD; break; } if (state->head != Z_NULL) state->head->text = (int)((hold >> 8) & 1); if ((state->flags & 0x0200) && (state->wrap & 4)) CRC2(state->check, hold); INITBITS(); state->mode = TIME; case TIME: NEEDBITS(32); if (state->head != Z_NULL) state->head->time = hold; if ((state->flags & 0x0200) && (state->wrap & 4)) CRC4(state->check, hold); INITBITS(); state->mode = OS; case OS: NEEDBITS(16); if (state->head != Z_NULL) { state->head->xflags = (int)(hold & 0xff); state->head->os = (int)(hold >> 8); } if ((state->flags & 0x0200) && (state->wrap & 4)) CRC2(state->check, hold); INITBITS(); state->mode = EXLEN; case EXLEN: if (state->flags & 0x0400) { NEEDBITS(16); state->length = (unsigned)(hold); if (state->head != Z_NULL) state->head->extra_len = (unsigned)hold; if ((state->flags & 0x0200) && (state->wrap & 4)) CRC2(state->check, hold); INITBITS(); } else if (state->head != Z_NULL) state->head->extra = Z_NULL; state->mode = EXTRA; case EXTRA: if (state->flags & 0x0400) { copy = state->length; if (copy > have) copy = have; if (copy) { if (state->head != Z_NULL && state->head->extra != Z_NULL) { len = state->head->extra_len - state->length; zmemcpy(state->head->extra + len, next, len + copy > state->head->extra_max ? state->head->extra_max - len : copy); } if ((state->flags & 0x0200) && (state->wrap & 4)) state->check = crc32(state->check, next, copy); have -= copy; next += copy; state->length -= copy; } if (state->length) goto inf_leave; } state->length = 0; state->mode = NAME; case NAME: if (state->flags & 0x0800) { if (have == 0) goto inf_leave; copy = 0; do { len = (unsigned)(next[copy++]); if (state->head != Z_NULL && state->head->name != Z_NULL && state->length < state->head->name_max) state->head->name[state->length++] = (Bytef)len; } while (len && copy < have); if ((state->flags & 0x0200) && (state->wrap & 4)) state->check = crc32(state->check, next, copy); have -= copy; next += copy; if (len) goto inf_leave; } else if (state->head != Z_NULL) state->head->name = Z_NULL; state->length = 0; state->mode = COMMENT; case COMMENT: if (state->flags & 0x1000) { if (have == 0) goto inf_leave; copy = 0; do { len = (unsigned)(next[copy++]); if (state->head != Z_NULL && state->head->comment != Z_NULL && state->length < state->head->comm_max) state->head->comment[state->length++] = (Bytef)len; } while (len && copy < have); if ((state->flags & 0x0200) && (state->wrap & 4)) state->check = crc32(state->check, next, copy); have -= copy; next += copy; if (len) goto inf_leave; } else if (state->head != Z_NULL) state->head->comment = Z_NULL; state->mode = HCRC; case HCRC: if (state->flags & 0x0200) { NEEDBITS(16); if ((state->wrap & 4) && hold != (state->check & 0xffff)) { strm->msg = (char *)"header crc mismatch"; state->mode = BAD; break; } INITBITS(); } if (state->head != Z_NULL) { state->head->hcrc = (int)((state->flags >> 9) & 1); state->head->done = 1; } strm->adler = state->check = crc32(0L, Z_NULL, 0); state->mode = TYPE; break; #endif case DICTID: NEEDBITS(32); strm->adler = state->check = ZSWAP32(hold); INITBITS(); state->mode = DICT; case DICT: if (state->havedict == 0) { RESTORE(); return Z_NEED_DICT; } strm->adler = state->check = adler32(0L, Z_NULL, 0); state->mode = TYPE; case TYPE: if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave; case TYPEDO: if (state->last) { BYTEBITS(); state->mode = CHECK; break; } NEEDBITS(3); state->last = BITS(1); DROPBITS(1); switch (BITS(2)) { case 0: /* stored block */ Tracev((stderr, "inflate: stored block%s\n", state->last ? " (last)" : "")); state->mode = STORED; break; case 1: /* fixed block */ fixedtables(state); Tracev((stderr, "inflate: fixed codes block%s\n", state->last ? " (last)" : "")); state->mode = LEN_; /* decode codes */ if (flush == Z_TREES) { DROPBITS(2); goto inf_leave; } break; case 2: /* dynamic block */ Tracev((stderr, "inflate: dynamic codes block%s\n", state->last ? " (last)" : "")); state->mode = TABLE; break; case 3: strm->msg = (char *)"invalid block type"; state->mode = BAD; } DROPBITS(2); break; case STORED: BYTEBITS(); /* go to byte boundary */ NEEDBITS(32); if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { strm->msg = (char *)"invalid stored block lengths"; state->mode = BAD; break; } state->length = (unsigned)hold & 0xffff; Tracev((stderr, "inflate: stored length %u\n", state->length)); INITBITS(); state->mode = COPY_; if (flush == Z_TREES) goto inf_leave; case COPY_: state->mode = COPY; case COPY: copy = state->length; if (copy) { if (copy > have) copy = have; if (copy > left) copy = left; if (copy == 0) goto inf_leave; zmemcpy(put, next, copy); have -= copy; next += copy; left -= copy; put += copy; state->length -= copy; break; } Tracev((stderr, "inflate: stored end\n")); state->mode = TYPE; break; case TABLE: NEEDBITS(14); state->nlen = BITS(5) + 257; DROPBITS(5); state->ndist = BITS(5) + 1; DROPBITS(5); state->ncode = BITS(4) + 4; DROPBITS(4); #ifndef PKZIP_BUG_WORKAROUND if (state->nlen > 286 || state->ndist > 30) { strm->msg = (char *)"too many length or distance symbols"; state->mode = BAD; break; } #endif Tracev((stderr, "inflate: table sizes ok\n")); state->have = 0; state->mode = LENLENS; case LENLENS: while (state->have < state->ncode) { NEEDBITS(3); state->lens[order[state->have++]] = (unsigned short)BITS(3); DROPBITS(3); } while (state->have < 19) state->lens[order[state->have++]] = 0; state->next = state->codes; state->lencode = (const code FAR *)(state->next); state->lenbits = 7; ret = inflate_table(CODES, state->lens, 19, &(state->next), &(state->lenbits), state->work); if (ret) { strm->msg = (char *)"invalid code lengths set"; state->mode = BAD; break; } Tracev((stderr, "inflate: code lengths ok\n")); state->have = 0; state->mode = CODELENS; case CODELENS: while (state->have < state->nlen + state->ndist) { for (;;) { here = state->lencode[BITS(state->lenbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if (here.val < 16) { DROPBITS(here.bits); state->lens[state->have++] = here.val; } else { if (here.val == 16) { NEEDBITS(here.bits + 2); DROPBITS(here.bits); if (state->have == 0) { strm->msg = (char *)"invalid bit length repeat"; state->mode = BAD; break; } len = state->lens[state->have - 1]; copy = 3 + BITS(2); DROPBITS(2); } else if (here.val == 17) { NEEDBITS(here.bits + 3); DROPBITS(here.bits); len = 0; copy = 3 + BITS(3); DROPBITS(3); } else { NEEDBITS(here.bits + 7); DROPBITS(here.bits); len = 0; copy = 11 + BITS(7); DROPBITS(7); } if (state->have + copy > state->nlen + state->ndist) { strm->msg = (char *)"invalid bit length repeat"; state->mode = BAD; break; } while (copy--) state->lens[state->have++] = (unsigned short)len; } } /* handle error breaks in while */ if (state->mode == BAD) break; /* check for end-of-block code (better have one) */ if (state->lens[256] == 0) { strm->msg = (char *)"invalid code -- missing end-of-block"; state->mode = BAD; break; } /* build code tables -- note: do not change the lenbits or distbits values here (9 and 6) without reading the comments in inftrees.h concerning the ENOUGH constants, which depend on those values */ state->next = state->codes; state->lencode = (const code FAR *)(state->next); state->lenbits = 9; ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), &(state->lenbits), state->work); if (ret) { strm->msg = (char *)"invalid literal/lengths set"; state->mode = BAD; break; } state->distcode = (const code FAR *)(state->next); state->distbits = 6; ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, &(state->next), &(state->distbits), state->work); if (ret) { strm->msg = (char *)"invalid distances set"; state->mode = BAD; break; } Tracev((stderr, "inflate: codes ok\n")); state->mode = LEN_; if (flush == Z_TREES) goto inf_leave; case LEN_: state->mode = LEN; case LEN: if (have >= 6 && left >= 258) { RESTORE(); inflate_fast(strm, out); LOAD(); if (state->mode == TYPE) state->back = -1; break; } state->back = 0; for (;;) { here = state->lencode[BITS(state->lenbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if (here.op && (here.op & 0xf0) == 0) { last = here; for (;;) { here = state->lencode[last.val + (BITS(last.bits + last.op) >> last.bits)]; if ((unsigned)(last.bits + here.bits) <= bits) break; PULLBYTE(); } DROPBITS(last.bits); state->back += last.bits; } DROPBITS(here.bits); state->back += here.bits; state->length = (unsigned)here.val; if ((int)(here.op) == 0) { Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? "inflate: literal '%c'\n" : "inflate: literal 0x%02x\n", here.val)); state->mode = LIT; break; } if (here.op & 32) { Tracevv((stderr, "inflate: end of block\n")); state->back = -1; state->mode = TYPE; break; } if (here.op & 64) { strm->msg = (char *)"invalid literal/length code"; state->mode = BAD; break; } state->extra = (unsigned)(here.op) & 15; state->mode = LENEXT; case LENEXT: if (state->extra) { NEEDBITS(state->extra); state->length += BITS(state->extra); DROPBITS(state->extra); state->back += state->extra; } Tracevv((stderr, "inflate: length %u\n", state->length)); state->was = state->length; state->mode = DIST; case DIST: for (;;) { here = state->distcode[BITS(state->distbits)]; if ((unsigned)(here.bits) <= bits) break; PULLBYTE(); } if ((here.op & 0xf0) == 0) { last = here; for (;;) { here = state->distcode[last.val + (BITS(last.bits + last.op) >> last.bits)]; if ((unsigned)(last.bits + here.bits) <= bits) break; PULLBYTE(); } DROPBITS(last.bits); state->back += last.bits; } DROPBITS(here.bits); state->back += here.bits; if (here.op & 64) { strm->msg = (char *)"invalid distance code"; state->mode = BAD; break; } state->offset = (unsigned)here.val; state->extra = (unsigned)(here.op) & 15; state->mode = DISTEXT; case DISTEXT: if (state->extra) { NEEDBITS(state->extra); state->offset += BITS(state->extra); DROPBITS(state->extra); state->back += state->extra; } #ifdef INFLATE_STRICT if (state->offset > state->dmax) { strm->msg = (char *)"invalid distance too far back"; state->mode = BAD; break; } #endif Tracevv((stderr, "inflate: distance %u\n", state->offset)); state->mode = MATCH; case MATCH: if (left == 0) goto inf_leave; copy = out - left; if (state->offset > copy) { /* copy from window */ copy = state->offset - copy; if (copy > state->whave) { if (state->sane) { strm->msg = (char *)"invalid distance too far back"; state->mode = BAD; break; } #ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR Trace((stderr, "inflate.c too far\n")); copy -= state->whave; if (copy > state->length) copy = state->length; if (copy > left) copy = left; left -= copy; state->length -= copy; do { *put++ = 0; } while (--copy); if (state->length == 0) state->mode = LEN; break; #endif } if (copy > state->wnext) { copy -= state->wnext; from = state->window + (state->wsize - copy); } else from = state->window + (state->wnext - copy); if (copy > state->length) copy = state->length; } else { /* copy from output */ from = put - state->offset; copy = state->length; } if (copy > left) copy = left; left -= copy; state->length -= copy; do { *put++ = *from++; } while (--copy); if (state->length == 0) state->mode = LEN; break; case LIT: if (left == 0) goto inf_leave; *put++ = (unsigned char)(state->length); left--; state->mode = LEN; break; case CHECK: if (state->wrap) { NEEDBITS(32); out -= left; strm->total_out += out; state->total += out; if ((state->wrap & 4) && out) strm->adler = state->check = UPDATE(state->check, put - out, out); out = left; if ((state->wrap & 4) && ( #ifdef GUNZIP state->flags ? hold : #endif ZSWAP32(hold)) != state->check) { strm->msg = (char *)"incorrect data check"; state->mode = BAD; break; } INITBITS(); Tracev((stderr, "inflate: check matches trailer\n")); } #ifdef GUNZIP state->mode = LENGTH; case LENGTH: if (state->wrap && state->flags) { NEEDBITS(32); if (hold != (state->total & 0xffffffffUL)) { strm->msg = (char *)"incorrect length check"; state->mode = BAD; break; } INITBITS(); Tracev((stderr, "inflate: length matches trailer\n")); } #endif state->mode = DONE; case DONE: ret = Z_STREAM_END; goto inf_leave; case BAD: ret = Z_DATA_ERROR; goto inf_leave; case MEM: return Z_MEM_ERROR; case SYNC: default: return Z_STREAM_ERROR; } /* Return from inflate(), updating the total counts and the check value. If there was no progress during the inflate() call, return a buffer error. Call updatewindow() to create and/or update the window state. Note: a memory error from inflate() is non-recoverable. */ inf_leave: RESTORE(); if (state->wsize || (out != strm->avail_out && state->mode < BAD && (state->mode < CHECK || flush != Z_FINISH))) if (updatewindow(strm, strm->next_out, out - strm->avail_out)) { state->mode = MEM; return Z_MEM_ERROR; } in -= strm->avail_in; out -= strm->avail_out; strm->total_in += in; strm->total_out += out; state->total += out; if ((state->wrap & 4) && out) strm->adler = state->check = UPDATE(state->check, strm->next_out - out, out); strm->data_type = (int)state->bits + (state->last ? 64 : 0) + (state->mode == TYPE ? 128 : 0) + (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0); if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK) ret = Z_BUF_ERROR; return ret; } int ZEXPORT inflateEnd(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (state->window != Z_NULL) ZFREE(strm, state->window); ZFREE(strm, strm->state); strm->state = Z_NULL; Tracev((stderr, "inflate: end\n")); return Z_OK; } int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength) z_streamp strm; Bytef *dictionary; uInt *dictLength; { struct inflate_state FAR *state; /* check state */ if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; /* copy dictionary */ if (state->whave && dictionary != Z_NULL) { zmemcpy(dictionary, state->window + state->wnext, state->whave - state->wnext); zmemcpy(dictionary + state->whave - state->wnext, state->window, state->wnext); } if (dictLength != Z_NULL) *dictLength = state->whave; return Z_OK; } int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength) z_streamp strm; const Bytef *dictionary; uInt dictLength; { struct inflate_state FAR *state; unsigned long dictid; int ret; /* check state */ if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (state->wrap != 0 && state->mode != DICT) return Z_STREAM_ERROR; /* check for correct dictionary identifier */ if (state->mode == DICT) { dictid = adler32(0L, Z_NULL, 0); dictid = adler32(dictid, dictionary, dictLength); if (dictid != state->check) return Z_DATA_ERROR; } /* copy dictionary to window using updatewindow(), which will amend the existing dictionary if appropriate */ ret = updatewindow(strm, dictionary + dictLength, dictLength); if (ret) { state->mode = MEM; return Z_MEM_ERROR; } state->havedict = 1; Tracev((stderr, "inflate: dictionary set\n")); return Z_OK; } int ZEXPORT inflateGetHeader(strm, head) z_streamp strm; gz_headerp head; { struct inflate_state FAR *state; /* check state */ if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if ((state->wrap & 2) == 0) return Z_STREAM_ERROR; /* save header structure */ state->head = head; head->done = 0; return Z_OK; } /* Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found or when out of input. When called, *have is the number of pattern bytes found in order so far, in 0..3. On return *have is updated to the new state. If on return *have equals four, then the pattern was found and the return value is how many bytes were read including the last byte of the pattern. If *have is less than four, then the pattern has not been found yet and the return value is len. In the latter case, syncsearch() can be called again with more data and the *have state. *have is initialized to zero for the first call. */ local unsigned syncsearch(have, buf, len) unsigned FAR *have; const unsigned char FAR *buf; unsigned len; { unsigned got; unsigned next; got = *have; next = 0; while (next < len && got < 4) { if ((int)(buf[next]) == (got < 2 ? 0 : 0xff)) got++; else if (buf[next]) got = 0; else got = 4 - got; next++; } *have = got; return next; } int ZEXPORT inflateSync(strm) z_streamp strm; { unsigned len; /* number of bytes to look at or looked at */ unsigned long in, out; /* temporary to save total_in and total_out */ unsigned char buf[4]; /* to restore bit buffer to byte string */ struct inflate_state FAR *state; /* check parameters */ if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR; /* if first time, start search in bit buffer */ if (state->mode != SYNC) { state->mode = SYNC; state->hold <<= state->bits & 7; state->bits -= state->bits & 7; len = 0; while (state->bits >= 8) { buf[len++] = (unsigned char)(state->hold); state->hold >>= 8; state->bits -= 8; } state->have = 0; syncsearch(&(state->have), buf, len); } /* search available input */ len = syncsearch(&(state->have), strm->next_in, strm->avail_in); strm->avail_in -= len; strm->next_in += len; strm->total_in += len; /* return no joy or set up to restart inflate() on a new block */ if (state->have != 4) return Z_DATA_ERROR; in = strm->total_in; out = strm->total_out; inflateReset(strm); strm->total_in = in; strm->total_out = out; state->mode = TYPE; return Z_OK; } /* Returns true if inflate is currently at the end of a block generated by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored block. When decompressing, PPP checks that at the end of input packet, inflate is waiting for these length bytes. */ int ZEXPORT inflateSyncPoint(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; return state->mode == STORED && state->bits == 0; } int ZEXPORT inflateCopy(dest, source) z_streamp dest; z_streamp source; { struct inflate_state FAR *state; struct inflate_state FAR *copy; unsigned char FAR *window; unsigned wsize; /* check input */ if (inflateStateCheck(source) || dest == Z_NULL) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)source->state; /* allocate space */ copy = (struct inflate_state FAR *) ZALLOC(source, 1, sizeof(struct inflate_state)); if (copy == Z_NULL) return Z_MEM_ERROR; window = Z_NULL; if (state->window != Z_NULL) { window = (unsigned char FAR *) ZALLOC(source, 1U << state->wbits, sizeof(unsigned char)); if (window == Z_NULL) { ZFREE(source, copy); return Z_MEM_ERROR; } } /* copy state */ zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream)); zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state)); copy->strm = dest; if (state->lencode >= state->codes && state->lencode <= state->codes + ENOUGH - 1) { copy->lencode = copy->codes + (state->lencode - state->codes); copy->distcode = copy->codes + (state->distcode - state->codes); } copy->next = copy->codes + (state->next - state->codes); if (window != Z_NULL) { wsize = 1U << state->wbits; zmemcpy(window, state->window, wsize); } copy->window = window; dest->state = (struct internal_state FAR *)copy; return Z_OK; } int ZEXPORT inflateUndermine(strm, subvert) z_streamp strm; int subvert; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; #ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR state->sane = !subvert; return Z_OK; #else (void)subvert; state->sane = 1; return Z_DATA_ERROR; #endif } int ZEXPORT inflateValidate(strm, check) z_streamp strm; int check; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return Z_STREAM_ERROR; state = (struct inflate_state FAR *)strm->state; if (check) state->wrap |= 4; else state->wrap &= ~4; return Z_OK; } long ZEXPORT inflateMark(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return -(1L << 16); state = (struct inflate_state FAR *)strm->state; return (long)(((unsigned long)((long)state->back)) << 16) + (state->mode == COPY ? state->length : (state->mode == MATCH ? state->was - state->length : 0)); } unsigned long ZEXPORT inflateCodesUsed(strm) z_streamp strm; { struct inflate_state FAR *state; if (inflateStateCheck(strm)) return (unsigned long)-1; state = (struct inflate_state FAR *)strm->state; return (unsigned long)(state->next - state->codes); } zlib-1.2.11.dfsg/test/0000755000175000017500000000000013162250104014303 5ustar brooniebrooniezlib-1.2.11.dfsg/test/example.c0000644000175000017500000004077013032130646016116 0ustar brooniebroonie/* example.c -- usage example of the zlib compression library * Copyright (C) 1995-2006, 2011, 2016 Jean-loup Gailly * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #include "zlib.h" #include #ifdef STDC # include # include #endif #if defined(VMS) || defined(RISCOS) # define TESTFILE "foo-gz" #else # define TESTFILE "foo.gz" #endif #define CHECK_ERR(err, msg) { \ if (err != Z_OK) { \ fprintf(stderr, "%s error: %d\n", msg, err); \ exit(1); \ } \ } static z_const char hello[] = "hello, hello!"; /* "hello world" would be more standard, but the repeated "hello" * stresses the compression code better, sorry... */ static const char dictionary[] = "hello"; static uLong dictId; /* Adler32 value of the dictionary */ void test_deflate OF((Byte *compr, uLong comprLen)); void test_inflate OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); void test_large_deflate OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); void test_large_inflate OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); void test_flush OF((Byte *compr, uLong *comprLen)); void test_sync OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); void test_dict_deflate OF((Byte *compr, uLong comprLen)); void test_dict_inflate OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); int main OF((int argc, char *argv[])); #ifdef Z_SOLO void *myalloc OF((void *, unsigned, unsigned)); void myfree OF((void *, void *)); void *myalloc(q, n, m) void *q; unsigned n, m; { (void)q; return calloc(n, m); } void myfree(void *q, void *p) { (void)q; free(p); } static alloc_func zalloc = myalloc; static free_func zfree = myfree; #else /* !Z_SOLO */ static alloc_func zalloc = (alloc_func)0; static free_func zfree = (free_func)0; void test_compress OF((Byte *compr, uLong comprLen, Byte *uncompr, uLong uncomprLen)); void test_gzio OF((const char *fname, Byte *uncompr, uLong uncomprLen)); /* =========================================================================== * Test compress() and uncompress() */ void test_compress(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { int err; uLong len = (uLong)strlen(hello)+1; err = compress(compr, &comprLen, (const Bytef*)hello, len); CHECK_ERR(err, "compress"); strcpy((char*)uncompr, "garbage"); err = uncompress(uncompr, &uncomprLen, compr, comprLen); CHECK_ERR(err, "uncompress"); if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad uncompress\n"); exit(1); } else { printf("uncompress(): %s\n", (char *)uncompr); } } /* =========================================================================== * Test read/write of .gz files */ void test_gzio(fname, uncompr, uncomprLen) const char *fname; /* compressed file name */ Byte *uncompr; uLong uncomprLen; { #ifdef NO_GZCOMPRESS fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n"); #else int err; int len = (int)strlen(hello)+1; gzFile file; z_off_t pos; file = gzopen(fname, "wb"); if (file == NULL) { fprintf(stderr, "gzopen error\n"); exit(1); } gzputc(file, 'h'); if (gzputs(file, "ello") != 4) { fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err)); exit(1); } if (gzprintf(file, ", %s!", "hello") != 8) { fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err)); exit(1); } gzseek(file, 1L, SEEK_CUR); /* add one zero byte */ gzclose(file); file = gzopen(fname, "rb"); if (file == NULL) { fprintf(stderr, "gzopen error\n"); exit(1); } strcpy((char*)uncompr, "garbage"); if (gzread(file, uncompr, (unsigned)uncomprLen) != len) { fprintf(stderr, "gzread err: %s\n", gzerror(file, &err)); exit(1); } if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad gzread: %s\n", (char*)uncompr); exit(1); } else { printf("gzread(): %s\n", (char*)uncompr); } pos = gzseek(file, -8L, SEEK_CUR); if (pos != 6 || gztell(file) != pos) { fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n", (long)pos, (long)gztell(file)); exit(1); } if (gzgetc(file) != ' ') { fprintf(stderr, "gzgetc error\n"); exit(1); } if (gzungetc(' ', file) != ' ') { fprintf(stderr, "gzungetc error\n"); exit(1); } gzgets(file, (char*)uncompr, (int)uncomprLen); if (strlen((char*)uncompr) != 7) { /* " hello!" */ fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err)); exit(1); } if (strcmp((char*)uncompr, hello + 6)) { fprintf(stderr, "bad gzgets after gzseek\n"); exit(1); } else { printf("gzgets() after gzseek: %s\n", (char*)uncompr); } gzclose(file); #endif } #endif /* Z_SOLO */ /* =========================================================================== * Test deflate() with small buffers */ void test_deflate(compr, comprLen) Byte *compr; uLong comprLen; { z_stream c_stream; /* compression stream */ int err; uLong len = (uLong)strlen(hello)+1; c_stream.zalloc = zalloc; c_stream.zfree = zfree; c_stream.opaque = (voidpf)0; err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); CHECK_ERR(err, "deflateInit"); c_stream.next_in = (z_const unsigned char *)hello; c_stream.next_out = compr; while (c_stream.total_in != len && c_stream.total_out < comprLen) { c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */ err = deflate(&c_stream, Z_NO_FLUSH); CHECK_ERR(err, "deflate"); } /* Finish the stream, still forcing small buffers: */ for (;;) { c_stream.avail_out = 1; err = deflate(&c_stream, Z_FINISH); if (err == Z_STREAM_END) break; CHECK_ERR(err, "deflate"); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); } /* =========================================================================== * Test inflate() with small buffers */ void test_inflate(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { int err; z_stream d_stream; /* decompression stream */ strcpy((char*)uncompr, "garbage"); d_stream.zalloc = zalloc; d_stream.zfree = zfree; d_stream.opaque = (voidpf)0; d_stream.next_in = compr; d_stream.avail_in = 0; d_stream.next_out = uncompr; err = inflateInit(&d_stream); CHECK_ERR(err, "inflateInit"); while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) { d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */ err = inflate(&d_stream, Z_NO_FLUSH); if (err == Z_STREAM_END) break; CHECK_ERR(err, "inflate"); } err = inflateEnd(&d_stream); CHECK_ERR(err, "inflateEnd"); if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad inflate\n"); exit(1); } else { printf("inflate(): %s\n", (char *)uncompr); } } /* =========================================================================== * Test deflate() with large buffers and dynamic change of compression level */ void test_large_deflate(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { z_stream c_stream; /* compression stream */ int err; c_stream.zalloc = zalloc; c_stream.zfree = zfree; c_stream.opaque = (voidpf)0; err = deflateInit(&c_stream, Z_BEST_SPEED); CHECK_ERR(err, "deflateInit"); c_stream.next_out = compr; c_stream.avail_out = (uInt)comprLen; /* At this point, uncompr is still mostly zeroes, so it should compress * very well: */ c_stream.next_in = uncompr; c_stream.avail_in = (uInt)uncomprLen; err = deflate(&c_stream, Z_NO_FLUSH); CHECK_ERR(err, "deflate"); if (c_stream.avail_in != 0) { fprintf(stderr, "deflate not greedy\n"); exit(1); } /* Feed in already compressed data and switch to no compression: */ deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY); c_stream.next_in = compr; c_stream.avail_in = (uInt)comprLen/2; err = deflate(&c_stream, Z_NO_FLUSH); CHECK_ERR(err, "deflate"); /* Switch back to compressing mode: */ deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED); c_stream.next_in = uncompr; c_stream.avail_in = (uInt)uncomprLen; err = deflate(&c_stream, Z_NO_FLUSH); CHECK_ERR(err, "deflate"); err = deflate(&c_stream, Z_FINISH); if (err != Z_STREAM_END) { fprintf(stderr, "deflate should report Z_STREAM_END\n"); exit(1); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); } /* =========================================================================== * Test inflate() with large buffers */ void test_large_inflate(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { int err; z_stream d_stream; /* decompression stream */ strcpy((char*)uncompr, "garbage"); d_stream.zalloc = zalloc; d_stream.zfree = zfree; d_stream.opaque = (voidpf)0; d_stream.next_in = compr; d_stream.avail_in = (uInt)comprLen; err = inflateInit(&d_stream); CHECK_ERR(err, "inflateInit"); for (;;) { d_stream.next_out = uncompr; /* discard the output */ d_stream.avail_out = (uInt)uncomprLen; err = inflate(&d_stream, Z_NO_FLUSH); if (err == Z_STREAM_END) break; CHECK_ERR(err, "large inflate"); } err = inflateEnd(&d_stream); CHECK_ERR(err, "inflateEnd"); if (d_stream.total_out != 2*uncomprLen + comprLen/2) { fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out); exit(1); } else { printf("large_inflate(): OK\n"); } } /* =========================================================================== * Test deflate() with full flush */ void test_flush(compr, comprLen) Byte *compr; uLong *comprLen; { z_stream c_stream; /* compression stream */ int err; uInt len = (uInt)strlen(hello)+1; c_stream.zalloc = zalloc; c_stream.zfree = zfree; c_stream.opaque = (voidpf)0; err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION); CHECK_ERR(err, "deflateInit"); c_stream.next_in = (z_const unsigned char *)hello; c_stream.next_out = compr; c_stream.avail_in = 3; c_stream.avail_out = (uInt)*comprLen; err = deflate(&c_stream, Z_FULL_FLUSH); CHECK_ERR(err, "deflate"); compr[3]++; /* force an error in first compressed block */ c_stream.avail_in = len - 3; err = deflate(&c_stream, Z_FINISH); if (err != Z_STREAM_END) { CHECK_ERR(err, "deflate"); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); *comprLen = c_stream.total_out; } /* =========================================================================== * Test inflateSync() */ void test_sync(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { int err; z_stream d_stream; /* decompression stream */ strcpy((char*)uncompr, "garbage"); d_stream.zalloc = zalloc; d_stream.zfree = zfree; d_stream.opaque = (voidpf)0; d_stream.next_in = compr; d_stream.avail_in = 2; /* just read the zlib header */ err = inflateInit(&d_stream); CHECK_ERR(err, "inflateInit"); d_stream.next_out = uncompr; d_stream.avail_out = (uInt)uncomprLen; err = inflate(&d_stream, Z_NO_FLUSH); CHECK_ERR(err, "inflate"); d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */ err = inflateSync(&d_stream); /* but skip the damaged part */ CHECK_ERR(err, "inflateSync"); err = inflate(&d_stream, Z_FINISH); if (err != Z_DATA_ERROR) { fprintf(stderr, "inflate should report DATA_ERROR\n"); /* Because of incorrect adler32 */ exit(1); } err = inflateEnd(&d_stream); CHECK_ERR(err, "inflateEnd"); printf("after inflateSync(): hel%s\n", (char *)uncompr); } /* =========================================================================== * Test deflate() with preset dictionary */ void test_dict_deflate(compr, comprLen) Byte *compr; uLong comprLen; { z_stream c_stream; /* compression stream */ int err; c_stream.zalloc = zalloc; c_stream.zfree = zfree; c_stream.opaque = (voidpf)0; err = deflateInit(&c_stream, Z_BEST_COMPRESSION); CHECK_ERR(err, "deflateInit"); err = deflateSetDictionary(&c_stream, (const Bytef*)dictionary, (int)sizeof(dictionary)); CHECK_ERR(err, "deflateSetDictionary"); dictId = c_stream.adler; c_stream.next_out = compr; c_stream.avail_out = (uInt)comprLen; c_stream.next_in = (z_const unsigned char *)hello; c_stream.avail_in = (uInt)strlen(hello)+1; err = deflate(&c_stream, Z_FINISH); if (err != Z_STREAM_END) { fprintf(stderr, "deflate should report Z_STREAM_END\n"); exit(1); } err = deflateEnd(&c_stream); CHECK_ERR(err, "deflateEnd"); } /* =========================================================================== * Test inflate() with a preset dictionary */ void test_dict_inflate(compr, comprLen, uncompr, uncomprLen) Byte *compr, *uncompr; uLong comprLen, uncomprLen; { int err; z_stream d_stream; /* decompression stream */ strcpy((char*)uncompr, "garbage"); d_stream.zalloc = zalloc; d_stream.zfree = zfree; d_stream.opaque = (voidpf)0; d_stream.next_in = compr; d_stream.avail_in = (uInt)comprLen; err = inflateInit(&d_stream); CHECK_ERR(err, "inflateInit"); d_stream.next_out = uncompr; d_stream.avail_out = (uInt)uncomprLen; for (;;) { err = inflate(&d_stream, Z_NO_FLUSH); if (err == Z_STREAM_END) break; if (err == Z_NEED_DICT) { if (d_stream.adler != dictId) { fprintf(stderr, "unexpected dictionary"); exit(1); } err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary, (int)sizeof(dictionary)); } CHECK_ERR(err, "inflate with dict"); } err = inflateEnd(&d_stream); CHECK_ERR(err, "inflateEnd"); if (strcmp((char*)uncompr, hello)) { fprintf(stderr, "bad inflate with dict\n"); exit(1); } else { printf("inflate with dictionary: %s\n", (char *)uncompr); } } /* =========================================================================== * Usage: example [output.gz [input.gz]] */ int main(argc, argv) int argc; char *argv[]; { Byte *compr, *uncompr; uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */ uLong uncomprLen = comprLen; static const char* myVersion = ZLIB_VERSION; if (zlibVersion()[0] != myVersion[0]) { fprintf(stderr, "incompatible zlib version\n"); exit(1); } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) { fprintf(stderr, "warning: different zlib version\n"); } printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n", ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags()); compr = (Byte*)calloc((uInt)comprLen, 1); uncompr = (Byte*)calloc((uInt)uncomprLen, 1); /* compr and uncompr are cleared to avoid reading uninitialized * data and to ensure that uncompr compresses well. */ if (compr == Z_NULL || uncompr == Z_NULL) { printf("out of memory\n"); exit(1); } #ifdef Z_SOLO (void)argc; (void)argv; #else test_compress(compr, comprLen, uncompr, uncomprLen); test_gzio((argc > 1 ? argv[1] : TESTFILE), uncompr, uncomprLen); #endif test_deflate(compr, comprLen); test_inflate(compr, comprLen, uncompr, uncomprLen); test_large_deflate(compr, comprLen, uncompr, uncomprLen); test_large_inflate(compr, comprLen, uncompr, uncomprLen); test_flush(compr, &comprLen); test_sync(compr, comprLen, uncompr, uncomprLen); comprLen = uncomprLen; test_dict_deflate(compr, comprLen); test_dict_inflate(compr, comprLen, uncompr, uncomprLen); free(compr); free(uncompr); return 0; } zlib-1.2.11.dfsg/test/infcover.c0000644000175000017500000006022313032130646016271 0ustar brooniebroonie/* infcover.c -- test zlib's inflate routines with full code coverage * Copyright (C) 2011, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* to use, do: ./configure --cover && make cover */ #include #include #include #include #include "zlib.h" /* get definition of internal structure so we can mess with it (see pull()), and so we can call inflate_trees() (see cover5()) */ #define ZLIB_INTERNAL #include "inftrees.h" #include "inflate.h" #define local static /* -- memory tracking routines -- */ /* These memory tracking routines are provided to zlib and track all of zlib's allocations and deallocations, check for LIFO operations, keep a current and high water mark of total bytes requested, optionally set a limit on the total memory that can be allocated, and when done check for memory leaks. They are used as follows: z_stream strm; mem_setup(&strm) initializes the memory tracking and sets the zalloc, zfree, and opaque members of strm to use memory tracking for all zlib operations on strm mem_limit(&strm, limit) sets a limit on the total bytes requested -- a request that exceeds this limit will result in an allocation failure (returns NULL) -- setting the limit to zero means no limit, which is the default after mem_setup() mem_used(&strm, "msg") prints to stderr "msg" and the total bytes used mem_high(&strm, "msg") prints to stderr "msg" and the high water mark mem_done(&strm, "msg") ends memory tracking, releases all allocations for the tracking as well as leaked zlib blocks, if any. If there was anything unusual, such as leaked blocks, non-FIFO frees, or frees of addresses not allocated, then "msg" and information about the problem is printed to stderr. If everything is normal, nothing is printed. mem_done resets the strm members to Z_NULL to use the default memory allocation routines on the next zlib initialization using strm. */ /* these items are strung together in a linked list, one for each allocation */ struct mem_item { void *ptr; /* pointer to allocated memory */ size_t size; /* requested size of allocation */ struct mem_item *next; /* pointer to next item in list, or NULL */ }; /* this structure is at the root of the linked list, and tracks statistics */ struct mem_zone { struct mem_item *first; /* pointer to first item in list, or NULL */ size_t total, highwater; /* total allocations, and largest total */ size_t limit; /* memory allocation limit, or 0 if no limit */ int notlifo, rogue; /* counts of non-LIFO frees and rogue frees */ }; /* memory allocation routine to pass to zlib */ local void *mem_alloc(void *mem, unsigned count, unsigned size) { void *ptr; struct mem_item *item; struct mem_zone *zone = mem; size_t len = count * (size_t)size; /* induced allocation failure */ if (zone == NULL || (zone->limit && zone->total + len > zone->limit)) return NULL; /* perform allocation using the standard library, fill memory with a non-zero value to make sure that the code isn't depending on zeros */ ptr = malloc(len); if (ptr == NULL) return NULL; memset(ptr, 0xa5, len); /* create a new item for the list */ item = malloc(sizeof(struct mem_item)); if (item == NULL) { free(ptr); return NULL; } item->ptr = ptr; item->size = len; /* insert item at the beginning of the list */ item->next = zone->first; zone->first = item; /* update the statistics */ zone->total += item->size; if (zone->total > zone->highwater) zone->highwater = zone->total; /* return the allocated memory */ return ptr; } /* memory free routine to pass to zlib */ local void mem_free(void *mem, void *ptr) { struct mem_item *item, *next; struct mem_zone *zone = mem; /* if no zone, just do a free */ if (zone == NULL) { free(ptr); return; } /* point next to the item that matches ptr, or NULL if not found -- remove the item from the linked list if found */ next = zone->first; if (next) { if (next->ptr == ptr) zone->first = next->next; /* first one is it, remove from list */ else { do { /* search the linked list */ item = next; next = item->next; } while (next != NULL && next->ptr != ptr); if (next) { /* if found, remove from linked list */ item->next = next->next; zone->notlifo++; /* not a LIFO free */ } } } /* if found, update the statistics and free the item */ if (next) { zone->total -= next->size; free(next); } /* if not found, update the rogue count */ else zone->rogue++; /* in any case, do the requested free with the standard library function */ free(ptr); } /* set up a controlled memory allocation space for monitoring, set the stream parameters to the controlled routines, with opaque pointing to the space */ local void mem_setup(z_stream *strm) { struct mem_zone *zone; zone = malloc(sizeof(struct mem_zone)); assert(zone != NULL); zone->first = NULL; zone->total = 0; zone->highwater = 0; zone->limit = 0; zone->notlifo = 0; zone->rogue = 0; strm->opaque = zone; strm->zalloc = mem_alloc; strm->zfree = mem_free; } /* set a limit on the total memory allocation, or 0 to remove the limit */ local void mem_limit(z_stream *strm, size_t limit) { struct mem_zone *zone = strm->opaque; zone->limit = limit; } /* show the current total requested allocations in bytes */ local void mem_used(z_stream *strm, char *prefix) { struct mem_zone *zone = strm->opaque; fprintf(stderr, "%s: %lu allocated\n", prefix, zone->total); } /* show the high water allocation in bytes */ local void mem_high(z_stream *strm, char *prefix) { struct mem_zone *zone = strm->opaque; fprintf(stderr, "%s: %lu high water mark\n", prefix, zone->highwater); } /* release the memory allocation zone -- if there are any surprises, notify */ local void mem_done(z_stream *strm, char *prefix) { int count = 0; struct mem_item *item, *next; struct mem_zone *zone = strm->opaque; /* show high water mark */ mem_high(strm, prefix); /* free leftover allocations and item structures, if any */ item = zone->first; while (item != NULL) { free(item->ptr); next = item->next; free(item); item = next; count++; } /* issue alerts about anything unexpected */ if (count || zone->total) fprintf(stderr, "** %s: %lu bytes in %d blocks not freed\n", prefix, zone->total, count); if (zone->notlifo) fprintf(stderr, "** %s: %d frees not LIFO\n", prefix, zone->notlifo); if (zone->rogue) fprintf(stderr, "** %s: %d frees not recognized\n", prefix, zone->rogue); /* free the zone and delete from the stream */ free(zone); strm->opaque = Z_NULL; strm->zalloc = Z_NULL; strm->zfree = Z_NULL; } /* -- inflate test routines -- */ /* Decode a hexadecimal string, set *len to length, in[] to the bytes. This decodes liberally, in that hex digits can be adjacent, in which case two in a row writes a byte. Or they can be delimited by any non-hex character, where the delimiters are ignored except when a single hex digit is followed by a delimiter, where that single digit writes a byte. The returned data is allocated and must eventually be freed. NULL is returned if out of memory. If the length is not needed, then len can be NULL. */ local unsigned char *h2b(const char *hex, unsigned *len) { unsigned char *in, *re; unsigned next, val; in = malloc((strlen(hex) + 1) >> 1); if (in == NULL) return NULL; next = 0; val = 1; do { if (*hex >= '0' && *hex <= '9') val = (val << 4) + *hex - '0'; else if (*hex >= 'A' && *hex <= 'F') val = (val << 4) + *hex - 'A' + 10; else if (*hex >= 'a' && *hex <= 'f') val = (val << 4) + *hex - 'a' + 10; else if (val != 1 && val < 32) /* one digit followed by delimiter */ val += 240; /* make it look like two digits */ if (val > 255) { /* have two digits */ in[next++] = val & 0xff; /* save the decoded byte */ val = 1; /* start over */ } } while (*hex++); /* go through the loop with the terminating null */ if (len != NULL) *len = next; re = realloc(in, next); return re == NULL ? in : re; } /* generic inflate() run, where hex is the hexadecimal input data, what is the text to include in an error message, step is how much input data to feed inflate() on each call, or zero to feed it all, win is the window bits parameter to inflateInit2(), len is the size of the output buffer, and err is the error code expected from the first inflate() call (the second inflate() call is expected to return Z_STREAM_END). If win is 47, then header information is collected with inflateGetHeader(). If a zlib stream is looking for a dictionary, then an empty dictionary is provided. inflate() is run until all of the input data is consumed. */ local void inf(char *hex, char *what, unsigned step, int win, unsigned len, int err) { int ret; unsigned have; unsigned char *in, *out; z_stream strm, copy; gz_header head; mem_setup(&strm); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, win); if (ret != Z_OK) { mem_done(&strm, what); return; } out = malloc(len); assert(out != NULL); if (win == 47) { head.extra = out; head.extra_max = len; head.name = out; head.name_max = len; head.comment = out; head.comm_max = len; ret = inflateGetHeader(&strm, &head); assert(ret == Z_OK); } in = h2b(hex, &have); assert(in != NULL); if (step == 0 || step > have) step = have; strm.avail_in = step; have -= step; strm.next_in = in; do { strm.avail_out = len; strm.next_out = out; ret = inflate(&strm, Z_NO_FLUSH); assert(err == 9 || ret == err); if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT) break; if (ret == Z_NEED_DICT) { ret = inflateSetDictionary(&strm, in, 1); assert(ret == Z_DATA_ERROR); mem_limit(&strm, 1); ret = inflateSetDictionary(&strm, out, 0); assert(ret == Z_MEM_ERROR); mem_limit(&strm, 0); ((struct inflate_state *)strm.state)->mode = DICT; ret = inflateSetDictionary(&strm, out, 0); assert(ret == Z_OK); ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_BUF_ERROR); } ret = inflateCopy(©, &strm); assert(ret == Z_OK); ret = inflateEnd(©); assert(ret == Z_OK); err = 9; /* don't care next time around */ have += strm.avail_in; strm.avail_in = step > have ? have : step; have -= strm.avail_in; } while (strm.avail_in); free(in); free(out); ret = inflateReset2(&strm, -8); assert(ret == Z_OK); ret = inflateEnd(&strm); assert(ret == Z_OK); mem_done(&strm, what); } /* cover all of the lines in inflate.c up to inflate() */ local void cover_support(void) { int ret; z_stream strm; mem_setup(&strm); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit(&strm); assert(ret == Z_OK); mem_used(&strm, "inflate init"); ret = inflatePrime(&strm, 5, 31); assert(ret == Z_OK); ret = inflatePrime(&strm, -1, 0); assert(ret == Z_OK); ret = inflateSetDictionary(&strm, Z_NULL, 0); assert(ret == Z_STREAM_ERROR); ret = inflateEnd(&strm); assert(ret == Z_OK); mem_done(&strm, "prime"); inf("63 0", "force window allocation", 0, -15, 1, Z_OK); inf("63 18 5", "force window replacement", 0, -8, 259, Z_OK); inf("63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, Z_OK); inf("3 0", "use fixed blocks", 0, -15, 1, Z_STREAM_END); inf("", "bad window size", 0, 1, 0, Z_STREAM_ERROR); mem_setup(&strm); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit_(&strm, ZLIB_VERSION - 1, (int)sizeof(z_stream)); assert(ret == Z_VERSION_ERROR); mem_done(&strm, "wrong version"); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit(&strm); assert(ret == Z_OK); ret = inflateEnd(&strm); assert(ret == Z_OK); fputs("inflate built-in memory routines\n", stderr); } /* cover all inflate() header and trailer cases and code after inflate() */ local void cover_wrap(void) { int ret; z_stream strm, copy; unsigned char dict[257]; ret = inflate(Z_NULL, 0); assert(ret == Z_STREAM_ERROR); ret = inflateEnd(Z_NULL); assert(ret == Z_STREAM_ERROR); ret = inflateCopy(Z_NULL, Z_NULL); assert(ret == Z_STREAM_ERROR); fputs("inflate bad parameters\n", stderr); inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR); inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR); inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR); inf("8 99", "set window size from header", 0, 0, 0, Z_OK); inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR); inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END); inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1, Z_DATA_ERROR); inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length", 0, 47, 0, Z_STREAM_END); inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR); inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT); inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK); mem_setup(&strm); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, -8); strm.avail_in = 2; strm.next_in = (void *)"\x63"; strm.avail_out = 1; strm.next_out = (void *)&ret; mem_limit(&strm, 1); ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR); mem_limit(&strm, 0); memset(dict, 0, 257); ret = inflateSetDictionary(&strm, dict, 257); assert(ret == Z_OK); mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256); ret = inflatePrime(&strm, 16, 0); assert(ret == Z_OK); strm.avail_in = 2; strm.next_in = (void *)"\x80"; ret = inflateSync(&strm); assert(ret == Z_DATA_ERROR); ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_STREAM_ERROR); strm.avail_in = 4; strm.next_in = (void *)"\0\0\xff\xff"; ret = inflateSync(&strm); assert(ret == Z_OK); (void)inflateSyncPoint(&strm); ret = inflateCopy(©, &strm); assert(ret == Z_MEM_ERROR); mem_limit(&strm, 0); ret = inflateUndermine(&strm, 1); assert(ret == Z_DATA_ERROR); (void)inflateMark(&strm); ret = inflateEnd(&strm); assert(ret == Z_OK); mem_done(&strm, "miscellaneous, force memory errors"); } /* input and output functions for inflateBack() */ local unsigned pull(void *desc, unsigned char **buf) { static unsigned int next = 0; static unsigned char dat[] = {0x63, 0, 2, 0}; struct inflate_state *state; if (desc == Z_NULL) { next = 0; return 0; /* no input (already provided at next_in) */ } state = (void *)((z_stream *)desc)->state; if (state != Z_NULL) state->mode = SYNC; /* force an otherwise impossible situation */ return next < sizeof(dat) ? (*buf = dat + next++, 1) : 0; } local int push(void *desc, unsigned char *buf, unsigned len) { buf += len; return desc != Z_NULL; /* force error if desc not null */ } /* cover inflateBack() up to common deflate data cases and after those */ local void cover_back(void) { int ret; z_stream strm; unsigned char win[32768]; ret = inflateBackInit_(Z_NULL, 0, win, 0, 0); assert(ret == Z_VERSION_ERROR); ret = inflateBackInit(Z_NULL, 0, win); assert(ret == Z_STREAM_ERROR); ret = inflateBack(Z_NULL, Z_NULL, Z_NULL, Z_NULL, Z_NULL); assert(ret == Z_STREAM_ERROR); ret = inflateBackEnd(Z_NULL); assert(ret == Z_STREAM_ERROR); fputs("inflateBack bad parameters\n", stderr); mem_setup(&strm); ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); strm.avail_in = 2; strm.next_in = (void *)"\x03"; ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL); assert(ret == Z_STREAM_END); /* force output error */ strm.avail_in = 3; strm.next_in = (void *)"\x63\x00"; ret = inflateBack(&strm, pull, Z_NULL, push, &strm); assert(ret == Z_BUF_ERROR); /* force mode error by mucking with state */ ret = inflateBack(&strm, pull, &strm, push, Z_NULL); assert(ret == Z_STREAM_ERROR); ret = inflateBackEnd(&strm); assert(ret == Z_OK); mem_done(&strm, "inflateBack bad state"); ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); ret = inflateBackEnd(&strm); assert(ret == Z_OK); fputs("inflateBack built-in memory routines\n", stderr); } /* do a raw inflate of data in hexadecimal with both inflate and inflateBack */ local int try(char *hex, char *id, int err) { int ret; unsigned len, size; unsigned char *in, *out, *win; char *prefix; z_stream strm; /* convert to hex */ in = h2b(hex, &len); assert(in != NULL); /* allocate work areas */ size = len << 3; out = malloc(size); assert(out != NULL); win = malloc(32768); assert(win != NULL); prefix = malloc(strlen(id) + 6); assert(prefix != NULL); /* first with inflate */ strcpy(prefix, id); strcat(prefix, "-late"); mem_setup(&strm); strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, err < 0 ? 47 : -15); assert(ret == Z_OK); strm.avail_in = len; strm.next_in = in; do { strm.avail_out = size; strm.next_out = out; ret = inflate(&strm, Z_TREES); assert(ret != Z_STREAM_ERROR && ret != Z_MEM_ERROR); if (ret == Z_DATA_ERROR || ret == Z_NEED_DICT) break; } while (strm.avail_in || strm.avail_out == 0); if (err) { assert(ret == Z_DATA_ERROR); assert(strcmp(id, strm.msg) == 0); } inflateEnd(&strm); mem_done(&strm, prefix); /* then with inflateBack */ if (err >= 0) { strcpy(prefix, id); strcat(prefix, "-back"); mem_setup(&strm); ret = inflateBackInit(&strm, 15, win); assert(ret == Z_OK); strm.avail_in = len; strm.next_in = in; ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL); assert(ret != Z_STREAM_ERROR); if (err) { assert(ret == Z_DATA_ERROR); assert(strcmp(id, strm.msg) == 0); } inflateBackEnd(&strm); mem_done(&strm, prefix); } /* clean up */ free(prefix); free(win); free(out); free(in); return ret; } /* cover deflate data cases in both inflate() and inflateBack() */ local void cover_inflate(void) { try("0 0 0 0 0", "invalid stored block lengths", 1); try("3 0", "fixed", 0); try("6", "invalid block type", 1); try("1 1 0 fe ff 0", "stored", 0); try("fc 0 0", "too many length or distance symbols", 1); try("4 0 fe ff", "invalid code lengths set", 1); try("4 0 24 49 0", "invalid bit length repeat", 1); try("4 0 24 e9 ff ff", "invalid bit length repeat", 1); try("4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1); try("4 80 49 92 24 49 92 24 71 ff ff 93 11 0", "invalid literal/lengths set", 1); try("4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1); try("4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1); try("2 7e ff ff", "invalid distance code", 1); try("c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1); /* also trailer mismatch just in inflate() */ try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1); try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1", "incorrect length check", -1); try("5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0); try("5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f", "long code", 0); try("ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0); try("ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c", "long distance and extra", 0); try("ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 " "0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0); inf("2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258, Z_STREAM_END); inf("63 18 5 40 c 0", "window wrap", 3, -8, 300, Z_OK); } /* cover remaining lines in inftrees.c */ local void cover_trees(void) { int ret; unsigned bits; unsigned short lens[16], work[16]; code *next, table[ENOUGH_DISTS]; /* we need to call inflate_table() directly in order to manifest not- enough errors, since zlib insures that enough is always enough */ for (bits = 0; bits < 15; bits++) lens[bits] = (unsigned short)(bits + 1); lens[15] = 15; next = table; bits = 15; ret = inflate_table(DISTS, lens, 16, &next, &bits, work); assert(ret == 1); next = table; bits = 1; ret = inflate_table(DISTS, lens, 16, &next, &bits, work); assert(ret == 1); fputs("inflate_table not enough errors\n", stderr); } /* cover remaining inffast.c decoding and window copying */ local void cover_fast(void) { inf("e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68" " ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, Z_DATA_ERROR); inf("25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49" " 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258, Z_DATA_ERROR); inf("3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258, Z_DATA_ERROR); inf("1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258, Z_DATA_ERROR); inf("d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0", "fast 2nd level codes and too far back", 0, -8, 258, Z_DATA_ERROR); inf("63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, Z_OK); inf("63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0", "contiguous and wrap around window", 6, -8, 259, Z_OK); inf("63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259, Z_STREAM_END); } int main(void) { fprintf(stderr, "%s\n", zlibVersion()); cover_support(); cover_wrap(); cover_back(); cover_inflate(); cover_trees(); cover_fast(); return 0; } zlib-1.2.11.dfsg/test/minigzip.c0000644000175000017500000003666513032130646016321 0ustar brooniebroonie/* minigzip.c -- simulate gzip using the zlib compression library * Copyright (C) 1995-2006, 2010, 2011, 2016 Jean-loup Gailly * For conditions of distribution and use, see copyright notice in zlib.h */ /* * minigzip is a minimal implementation of the gzip utility. This is * only an example of using zlib and isn't meant to replace the * full-featured gzip. No attempt is made to deal with file systems * limiting names to 14 or 8+3 characters, etc... Error checking is * very limited. So use minigzip only for testing; use gzip for the * real thing. On MSDOS, use only on file names without extension * or in pipe mode. */ /* @(#) $Id$ */ #include "zlib.h" #include #ifdef STDC # include # include #endif #ifdef USE_MMAP # include # include # include #endif #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) # include # include # ifdef UNDER_CE # include # endif # define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) #else # define SET_BINARY_MODE(file) #endif #if defined(_MSC_VER) && _MSC_VER < 1900 # define snprintf _snprintf #endif #ifdef VMS # define unlink delete # define GZ_SUFFIX "-gz" #endif #ifdef RISCOS # define unlink remove # define GZ_SUFFIX "-gz" # define fileno(file) file->__file #endif #if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os # include /* for fileno */ #endif #if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) #ifndef WIN32 /* unlink already in stdio.h for WIN32 */ extern int unlink OF((const char *)); #endif #endif #if defined(UNDER_CE) # include # define perror(s) pwinerror(s) /* Map the Windows error number in ERROR to a locale-dependent error message string and return a pointer to it. Typically, the values for ERROR come from GetLastError. The string pointed to shall not be modified by the application, but may be overwritten by a subsequent call to strwinerror The strwinerror function does not change the current setting of GetLastError. */ static char *strwinerror (error) DWORD error; { static char buf[1024]; wchar_t *msgbuf; DWORD lasterr = GetLastError(); DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, error, 0, /* Default language */ (LPVOID)&msgbuf, 0, NULL); if (chars != 0) { /* If there is an \r\n appended, zap it. */ if (chars >= 2 && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { chars -= 2; msgbuf[chars] = 0; } if (chars > sizeof (buf) - 1) { chars = sizeof (buf) - 1; msgbuf[chars] = 0; } wcstombs(buf, msgbuf, chars + 1); LocalFree(msgbuf); } else { sprintf(buf, "unknown win32 error (%ld)", error); } SetLastError(lasterr); return buf; } static void pwinerror (s) const char *s; { if (s && *s) fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ())); else fprintf(stderr, "%s\n", strwinerror(GetLastError ())); } #endif /* UNDER_CE */ #ifndef GZ_SUFFIX # define GZ_SUFFIX ".gz" #endif #define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) #define BUFLEN 16384 #define MAX_NAME_LEN 1024 #ifdef MAXSEG_64K # define local static /* Needed for systems with limitation on stack size. */ #else # define local #endif #ifdef Z_SOLO /* for Z_SOLO, create simplified gz* functions using deflate and inflate */ #if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE) # include /* for unlink() */ #endif void *myalloc OF((void *, unsigned, unsigned)); void myfree OF((void *, void *)); void *myalloc(q, n, m) void *q; unsigned n, m; { (void)q; return calloc(n, m); } void myfree(q, p) void *q, *p; { (void)q; free(p); } typedef struct gzFile_s { FILE *file; int write; int err; char *msg; z_stream strm; } *gzFile; gzFile gzopen OF((const char *, const char *)); gzFile gzdopen OF((int, const char *)); gzFile gz_open OF((const char *, int, const char *)); gzFile gzopen(path, mode) const char *path; const char *mode; { return gz_open(path, -1, mode); } gzFile gzdopen(fd, mode) int fd; const char *mode; { return gz_open(NULL, fd, mode); } gzFile gz_open(path, fd, mode) const char *path; int fd; const char *mode; { gzFile gz; int ret; gz = malloc(sizeof(struct gzFile_s)); if (gz == NULL) return NULL; gz->write = strchr(mode, 'w') != NULL; gz->strm.zalloc = myalloc; gz->strm.zfree = myfree; gz->strm.opaque = Z_NULL; if (gz->write) ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0); else { gz->strm.next_in = 0; gz->strm.avail_in = Z_NULL; ret = inflateInit2(&(gz->strm), 15 + 16); } if (ret != Z_OK) { free(gz); return NULL; } gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") : fopen(path, gz->write ? "wb" : "rb"); if (gz->file == NULL) { gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm)); free(gz); return NULL; } gz->err = 0; gz->msg = ""; return gz; } int gzwrite OF((gzFile, const void *, unsigned)); int gzwrite(gz, buf, len) gzFile gz; const void *buf; unsigned len; { z_stream *strm; unsigned char out[BUFLEN]; if (gz == NULL || !gz->write) return 0; strm = &(gz->strm); strm->next_in = (void *)buf; strm->avail_in = len; do { strm->next_out = out; strm->avail_out = BUFLEN; (void)deflate(strm, Z_NO_FLUSH); fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); } while (strm->avail_out == 0); return len; } int gzread OF((gzFile, void *, unsigned)); int gzread(gz, buf, len) gzFile gz; void *buf; unsigned len; { int ret; unsigned got; unsigned char in[1]; z_stream *strm; if (gz == NULL || gz->write) return 0; if (gz->err) return 0; strm = &(gz->strm); strm->next_out = (void *)buf; strm->avail_out = len; do { got = fread(in, 1, 1, gz->file); if (got == 0) break; strm->next_in = in; strm->avail_in = 1; ret = inflate(strm, Z_NO_FLUSH); if (ret == Z_DATA_ERROR) { gz->err = Z_DATA_ERROR; gz->msg = strm->msg; return 0; } if (ret == Z_STREAM_END) inflateReset(strm); } while (strm->avail_out); return len - strm->avail_out; } int gzclose OF((gzFile)); int gzclose(gz) gzFile gz; { z_stream *strm; unsigned char out[BUFLEN]; if (gz == NULL) return Z_STREAM_ERROR; strm = &(gz->strm); if (gz->write) { strm->next_in = Z_NULL; strm->avail_in = 0; do { strm->next_out = out; strm->avail_out = BUFLEN; (void)deflate(strm, Z_FINISH); fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); } while (strm->avail_out == 0); deflateEnd(strm); } else inflateEnd(strm); fclose(gz->file); free(gz); return Z_OK; } const char *gzerror OF((gzFile, int *)); const char *gzerror(gz, err) gzFile gz; int *err; { *err = gz->err; return gz->msg; } #endif static char *prog; void error OF((const char *msg)); void gz_compress OF((FILE *in, gzFile out)); #ifdef USE_MMAP int gz_compress_mmap OF((FILE *in, gzFile out)); #endif void gz_uncompress OF((gzFile in, FILE *out)); void file_compress OF((char *file, char *mode)); void file_uncompress OF((char *file)); int main OF((int argc, char *argv[])); /* =========================================================================== * Display error message and exit */ void error(msg) const char *msg; { fprintf(stderr, "%s: %s\n", prog, msg); exit(1); } /* =========================================================================== * Compress input to output then close both files. */ void gz_compress(in, out) FILE *in; gzFile out; { local char buf[BUFLEN]; int len; int err; #ifdef USE_MMAP /* Try first compressing with mmap. If mmap fails (minigzip used in a * pipe), use the normal fread loop. */ if (gz_compress_mmap(in, out) == Z_OK) return; #endif for (;;) { len = (int)fread(buf, 1, sizeof(buf), in); if (ferror(in)) { perror("fread"); exit(1); } if (len == 0) break; if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err)); } fclose(in); if (gzclose(out) != Z_OK) error("failed gzclose"); } #ifdef USE_MMAP /* MMAP version, Miguel Albrecht */ /* Try compressing the input file at once using mmap. Return Z_OK if * if success, Z_ERRNO otherwise. */ int gz_compress_mmap(in, out) FILE *in; gzFile out; { int len; int err; int ifd = fileno(in); caddr_t buf; /* mmap'ed buffer for the entire input file */ off_t buf_len; /* length of the input file */ struct stat sb; /* Determine the size of the file, needed for mmap: */ if (fstat(ifd, &sb) < 0) return Z_ERRNO; buf_len = sb.st_size; if (buf_len <= 0) return Z_ERRNO; /* Now do the actual mmap: */ buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); if (buf == (caddr_t)(-1)) return Z_ERRNO; /* Compress the whole file at once: */ len = gzwrite(out, (char *)buf, (unsigned)buf_len); if (len != (int)buf_len) error(gzerror(out, &err)); munmap(buf, buf_len); fclose(in); if (gzclose(out) != Z_OK) error("failed gzclose"); return Z_OK; } #endif /* USE_MMAP */ /* =========================================================================== * Uncompress input to output then close both files. */ void gz_uncompress(in, out) gzFile in; FILE *out; { local char buf[BUFLEN]; int len; int err; for (;;) { len = gzread(in, buf, sizeof(buf)); if (len < 0) error (gzerror(in, &err)); if (len == 0) break; if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { error("failed fwrite"); } } if (fclose(out)) error("failed fclose"); if (gzclose(in) != Z_OK) error("failed gzclose"); } /* =========================================================================== * Compress the given file: create a corresponding .gz file and remove the * original. */ void file_compress(file, mode) char *file; char *mode; { local char outfile[MAX_NAME_LEN]; FILE *in; gzFile out; if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { fprintf(stderr, "%s: filename too long\n", prog); exit(1); } #if !defined(NO_snprintf) && !defined(NO_vsnprintf) snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX); #else strcpy(outfile, file); strcat(outfile, GZ_SUFFIX); #endif in = fopen(file, "rb"); if (in == NULL) { perror(file); exit(1); } out = gzopen(outfile, mode); if (out == NULL) { fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); exit(1); } gz_compress(in, out); unlink(file); } /* =========================================================================== * Uncompress the given file and remove the original. */ void file_uncompress(file) char *file; { local char buf[MAX_NAME_LEN]; char *infile, *outfile; FILE *out; gzFile in; unsigned len = strlen(file); if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { fprintf(stderr, "%s: filename too long\n", prog); exit(1); } #if !defined(NO_snprintf) && !defined(NO_vsnprintf) snprintf(buf, sizeof(buf), "%s", file); #else strcpy(buf, file); #endif if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { infile = file; outfile = buf; outfile[len-3] = '\0'; } else { outfile = file; infile = buf; #if !defined(NO_snprintf) && !defined(NO_vsnprintf) snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX); #else strcat(infile, GZ_SUFFIX); #endif } in = gzopen(infile, "rb"); if (in == NULL) { fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); exit(1); } out = fopen(outfile, "wb"); if (out == NULL) { perror(file); exit(1); } gz_uncompress(in, out); unlink(infile); } /* =========================================================================== * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] * -c : write to standard output * -d : decompress * -f : compress with Z_FILTERED * -h : compress with Z_HUFFMAN_ONLY * -r : compress with Z_RLE * -1 to -9 : compression level */ int main(argc, argv) int argc; char *argv[]; { int copyout = 0; int uncompr = 0; gzFile file; char *bname, outmode[20]; #if !defined(NO_snprintf) && !defined(NO_vsnprintf) snprintf(outmode, sizeof(outmode), "%s", "wb6 "); #else strcpy(outmode, "wb6 "); #endif prog = argv[0]; bname = strrchr(argv[0], '/'); if (bname) bname++; else bname = argv[0]; argc--, argv++; if (!strcmp(bname, "gunzip")) uncompr = 1; else if (!strcmp(bname, "zcat")) copyout = uncompr = 1; while (argc > 0) { if (strcmp(*argv, "-c") == 0) copyout = 1; else if (strcmp(*argv, "-d") == 0) uncompr = 1; else if (strcmp(*argv, "-f") == 0) outmode[3] = 'f'; else if (strcmp(*argv, "-h") == 0) outmode[3] = 'h'; else if (strcmp(*argv, "-r") == 0) outmode[3] = 'R'; else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' && (*argv)[2] == 0) outmode[2] = (*argv)[1]; else break; argc--, argv++; } if (outmode[3] == ' ') outmode[3] = 0; if (argc == 0) { SET_BINARY_MODE(stdin); SET_BINARY_MODE(stdout); if (uncompr) { file = gzdopen(fileno(stdin), "rb"); if (file == NULL) error("can't gzdopen stdin"); gz_uncompress(file, stdout); } else { file = gzdopen(fileno(stdout), outmode); if (file == NULL) error("can't gzdopen stdout"); gz_compress(stdin, file); } } else { if (copyout) { SET_BINARY_MODE(stdout); } do { if (uncompr) { if (copyout) { file = gzopen(*argv, "rb"); if (file == NULL) fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); else gz_uncompress(file, stdout); } else { file_uncompress(*argv); } } else { if (copyout) { FILE * in = fopen(*argv, "rb"); if (in == NULL) { perror(*argv); } else { file = gzdopen(fileno(stdout), outmode); if (file == NULL) error("can't gzdopen stdout"); gz_compress(in, file); } } else { file_compress(*argv, outmode); } } } while (argv++, --argc); } return 0; } zlib-1.2.11.dfsg/nintendods/0000755000175000017500000000000013162250104015471 5ustar brooniebrooniezlib-1.2.11.dfsg/nintendods/README0000644000175000017500000000032111313610176016352 0ustar brooniebroonieThis Makefile requires devkitARM (http://www.devkitpro.org/category/devkitarm/) and works inside "contrib/nds". It is based on a devkitARM template. Eduardo Costa January 3, 2009 zlib-1.2.11.dfsg/nintendods/Makefile0000644000175000017500000001120511313607701017135 0ustar brooniebroonie#--------------------------------------------------------------------------------- .SUFFIXES: #--------------------------------------------------------------------------------- ifeq ($(strip $(DEVKITARM)),) $(error "Please set DEVKITARM in your environment. export DEVKITARM=devkitARM") endif include $(DEVKITARM)/ds_rules #--------------------------------------------------------------------------------- # TARGET is the name of the output # BUILD is the directory where object files & intermediate files will be placed # SOURCES is a list of directories containing source code # DATA is a list of directories containing data files # INCLUDES is a list of directories containing header files #--------------------------------------------------------------------------------- TARGET := $(shell basename $(CURDIR)) BUILD := build SOURCES := ../../ DATA := data INCLUDES := include #--------------------------------------------------------------------------------- # options for code generation #--------------------------------------------------------------------------------- ARCH := -mthumb -mthumb-interwork CFLAGS := -Wall -O2\ -march=armv5te -mtune=arm946e-s \ -fomit-frame-pointer -ffast-math \ $(ARCH) CFLAGS += $(INCLUDE) -DARM9 CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions ASFLAGS := $(ARCH) -march=armv5te -mtune=arm946e-s LDFLAGS = -specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map) #--------------------------------------------------------------------------------- # list of directories containing libraries, this must be the top level containing # include and lib #--------------------------------------------------------------------------------- LIBDIRS := $(LIBNDS) #--------------------------------------------------------------------------------- # no real need to edit anything past this point unless you need to add additional # rules for different file extensions #--------------------------------------------------------------------------------- ifneq ($(BUILD),$(notdir $(CURDIR))) #--------------------------------------------------------------------------------- export OUTPUT := $(CURDIR)/lib/libz.a export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \ $(foreach dir,$(DATA),$(CURDIR)/$(dir)) export DEPSDIR := $(CURDIR)/$(BUILD) CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c))) CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp))) SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s))) BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*))) #--------------------------------------------------------------------------------- # use CXX for linking C++ projects, CC for standard C #--------------------------------------------------------------------------------- ifeq ($(strip $(CPPFILES)),) #--------------------------------------------------------------------------------- export LD := $(CC) #--------------------------------------------------------------------------------- else #--------------------------------------------------------------------------------- export LD := $(CXX) #--------------------------------------------------------------------------------- endif #--------------------------------------------------------------------------------- export OFILES := $(addsuffix .o,$(BINFILES)) \ $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o) export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \ $(foreach dir,$(LIBDIRS),-I$(dir)/include) \ -I$(CURDIR)/$(BUILD) .PHONY: $(BUILD) clean all #--------------------------------------------------------------------------------- all: $(BUILD) @[ -d $@ ] || mkdir -p include @cp ../../*.h include lib: @[ -d $@ ] || mkdir -p $@ $(BUILD): lib @[ -d $@ ] || mkdir -p $@ @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile #--------------------------------------------------------------------------------- clean: @echo clean ... @rm -fr $(BUILD) lib #--------------------------------------------------------------------------------- else DEPENDS := $(OFILES:.o=.d) #--------------------------------------------------------------------------------- # main targets #--------------------------------------------------------------------------------- $(OUTPUT) : $(OFILES) #--------------------------------------------------------------------------------- %.bin.o : %.bin #--------------------------------------------------------------------------------- @echo $(notdir $<) @$(bin2o) -include $(DEPENDS) #--------------------------------------------------------------------------------------- endif #--------------------------------------------------------------------------------------- zlib-1.2.11.dfsg/trees.c0000644000175000017500000012536113036726102014630 0ustar brooniebroonie/* trees.c -- output deflated data using Huffman coding * Copyright (C) 1995-2017 Jean-loup Gailly * detect_data_type() function provided freely by Cosmin Truta, 2006 * For conditions of distribution and use, see copyright notice in zlib.h */ /* * ALGORITHM * * The "deflation" process uses several Huffman trees. The more * common source values are represented by shorter bit sequences. * * Each code tree is stored in a compressed form which is itself * a Huffman encoding of the lengths of all the code strings (in * ascending order by source values). The actual code strings are * reconstructed from the lengths in the inflate process, as described * in the deflate specification. * * REFERENCES * * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification". * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc * * Storer, James A. * Data Compression: Methods and Theory, pp. 49-50. * Computer Science Press, 1988. ISBN 0-7167-8156-5. * * Sedgewick, R. * Algorithms, p290. * Addison-Wesley, 1983. ISBN 0-201-06672-6. */ /* @(#) $Id$ */ /* #define GEN_TREES_H */ #include "deflate.h" #ifdef ZLIB_DEBUG # include #endif /* =========================================================================== * Constants */ #define MAX_BL_BITS 7 /* Bit length codes must not exceed MAX_BL_BITS bits */ #define END_BLOCK 256 /* end of block literal code */ #define REP_3_6 16 /* repeat previous bit length 3-6 times (2 bits of repeat count) */ #define REPZ_3_10 17 /* repeat a zero length 3-10 times (3 bits of repeat count) */ #define REPZ_11_138 18 /* repeat a zero length 11-138 times (7 bits of repeat count) */ local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */ = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}; local const int extra_dbits[D_CODES] /* extra bits for each distance code */ = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */ = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}; local const uch bl_order[BL_CODES] = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}; /* The lengths of the bit length codes are sent in order of decreasing * probability, to avoid transmitting the lengths for unused bit length codes. */ /* =========================================================================== * Local data. These are initialized only once. */ #define DIST_CODE_LEN 512 /* see definition of array dist_code below */ #if defined(GEN_TREES_H) || !defined(STDC) /* non ANSI compilers may not accept trees.h */ local ct_data static_ltree[L_CODES+2]; /* The static literal tree. Since the bit lengths are imposed, there is no * need for the L_CODES extra codes used during heap construction. However * The codes 286 and 287 are needed to build a canonical tree (see _tr_init * below). */ local ct_data static_dtree[D_CODES]; /* The static distance tree. (Actually a trivial tree since all codes use * 5 bits.) */ uch _dist_code[DIST_CODE_LEN]; /* Distance codes. The first 256 values correspond to the distances * 3 .. 258, the last 256 values correspond to the top 8 bits of * the 15 bit distances. */ uch _length_code[MAX_MATCH-MIN_MATCH+1]; /* length code for each normalized match length (0 == MIN_MATCH) */ local int base_length[LENGTH_CODES]; /* First normalized length for each code (0 = MIN_MATCH) */ local int base_dist[D_CODES]; /* First normalized distance for each code (0 = distance of 1) */ #else # include "trees.h" #endif /* GEN_TREES_H */ struct static_tree_desc_s { const ct_data *static_tree; /* static tree or NULL */ const intf *extra_bits; /* extra bits for each code or NULL */ int extra_base; /* base index for extra_bits */ int elems; /* max number of elements in the tree */ int max_length; /* max bit length for the codes */ }; local const static_tree_desc static_l_desc = {static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS}; local const static_tree_desc static_d_desc = {static_dtree, extra_dbits, 0, D_CODES, MAX_BITS}; local const static_tree_desc static_bl_desc = {(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS}; /* =========================================================================== * Local (static) routines in this file. */ local void tr_static_init OF((void)); local void init_block OF((deflate_state *s)); local void pqdownheap OF((deflate_state *s, ct_data *tree, int k)); local void gen_bitlen OF((deflate_state *s, tree_desc *desc)); local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count)); local void build_tree OF((deflate_state *s, tree_desc *desc)); local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code)); local void send_tree OF((deflate_state *s, ct_data *tree, int max_code)); local int build_bl_tree OF((deflate_state *s)); local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes, int blcodes)); local void compress_block OF((deflate_state *s, const ct_data *ltree, const ct_data *dtree)); local int detect_data_type OF((deflate_state *s)); local unsigned bi_reverse OF((unsigned value, int length)); local void bi_windup OF((deflate_state *s)); local void bi_flush OF((deflate_state *s)); #ifdef GEN_TREES_H local void gen_trees_header OF((void)); #endif #ifndef ZLIB_DEBUG # define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len) /* Send a code of the given tree. c and tree must not have side effects */ #else /* !ZLIB_DEBUG */ # define send_code(s, c, tree) \ { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \ send_bits(s, tree[c].Code, tree[c].Len); } #endif /* =========================================================================== * Output a short LSB first on the stream. * IN assertion: there is enough room in pendingBuf. */ #define put_short(s, w) { \ put_byte(s, (uch)((w) & 0xff)); \ put_byte(s, (uch)((ush)(w) >> 8)); \ } /* =========================================================================== * Send a value on a given number of bits. * IN assertion: length <= 16 and value fits in length bits. */ #ifdef ZLIB_DEBUG local void send_bits OF((deflate_state *s, int value, int length)); local void send_bits(s, value, length) deflate_state *s; int value; /* value to send */ int length; /* number of bits */ { Tracevv((stderr," l %2d v %4x ", length, value)); Assert(length > 0 && length <= 15, "invalid length"); s->bits_sent += (ulg)length; /* If not enough room in bi_buf, use (valid) bits from bi_buf and * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid)) * unused bits in value. */ if (s->bi_valid > (int)Buf_size - length) { s->bi_buf |= (ush)value << s->bi_valid; put_short(s, s->bi_buf); s->bi_buf = (ush)value >> (Buf_size - s->bi_valid); s->bi_valid += length - Buf_size; } else { s->bi_buf |= (ush)value << s->bi_valid; s->bi_valid += length; } } #else /* !ZLIB_DEBUG */ #define send_bits(s, value, length) \ { int len = length;\ if (s->bi_valid > (int)Buf_size - len) {\ int val = (int)value;\ s->bi_buf |= (ush)val << s->bi_valid;\ put_short(s, s->bi_buf);\ s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\ s->bi_valid += len - Buf_size;\ } else {\ s->bi_buf |= (ush)(value) << s->bi_valid;\ s->bi_valid += len;\ }\ } #endif /* ZLIB_DEBUG */ /* the arguments must not have side effects */ /* =========================================================================== * Initialize the various 'constant' tables. */ local void tr_static_init() { #if defined(GEN_TREES_H) || !defined(STDC) static int static_init_done = 0; int n; /* iterates over tree elements */ int bits; /* bit counter */ int length; /* length value */ int code; /* code value */ int dist; /* distance index */ ush bl_count[MAX_BITS+1]; /* number of codes at each bit length for an optimal tree */ if (static_init_done) return; /* For some embedded targets, global variables are not initialized: */ #ifdef NO_INIT_GLOBAL_POINTERS static_l_desc.static_tree = static_ltree; static_l_desc.extra_bits = extra_lbits; static_d_desc.static_tree = static_dtree; static_d_desc.extra_bits = extra_dbits; static_bl_desc.extra_bits = extra_blbits; #endif /* Initialize the mapping length (0..255) -> length code (0..28) */ length = 0; for (code = 0; code < LENGTH_CODES-1; code++) { base_length[code] = length; for (n = 0; n < (1< dist code (0..29) */ dist = 0; for (code = 0 ; code < 16; code++) { base_dist[code] = dist; for (n = 0; n < (1<>= 7; /* from now on, all distances are divided by 128 */ for ( ; code < D_CODES; code++) { base_dist[code] = dist << 7; for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) { _dist_code[256 + dist++] = (uch)code; } } Assert (dist == 256, "tr_static_init: 256+dist != 512"); /* Construct the codes of the static literal tree */ for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0; n = 0; while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++; while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++; while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++; while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++; /* Codes 286 and 287 do not exist, but we must include them in the * tree construction to get a canonical Huffman tree (longest code * all ones) */ gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count); /* The static distance tree is trivial: */ for (n = 0; n < D_CODES; n++) { static_dtree[n].Len = 5; static_dtree[n].Code = bi_reverse((unsigned)n, 5); } static_init_done = 1; # ifdef GEN_TREES_H gen_trees_header(); # endif #endif /* defined(GEN_TREES_H) || !defined(STDC) */ } /* =========================================================================== * Genererate the file trees.h describing the static trees. */ #ifdef GEN_TREES_H # ifndef ZLIB_DEBUG # include # endif # define SEPARATOR(i, last, width) \ ((i) == (last)? "\n};\n\n" : \ ((i) % (width) == (width)-1 ? ",\n" : ", ")) void gen_trees_header() { FILE *header = fopen("trees.h", "w"); int i; Assert (header != NULL, "Can't open trees.h"); fprintf(header, "/* header created automatically with -DGEN_TREES_H */\n\n"); fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n"); for (i = 0; i < L_CODES+2; i++) { fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code, static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5)); } fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n"); for (i = 0; i < D_CODES; i++) { fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code, static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5)); } fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n"); for (i = 0; i < DIST_CODE_LEN; i++) { fprintf(header, "%2u%s", _dist_code[i], SEPARATOR(i, DIST_CODE_LEN-1, 20)); } fprintf(header, "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n"); for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) { fprintf(header, "%2u%s", _length_code[i], SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20)); } fprintf(header, "local const int base_length[LENGTH_CODES] = {\n"); for (i = 0; i < LENGTH_CODES; i++) { fprintf(header, "%1u%s", base_length[i], SEPARATOR(i, LENGTH_CODES-1, 20)); } fprintf(header, "local const int base_dist[D_CODES] = {\n"); for (i = 0; i < D_CODES; i++) { fprintf(header, "%5u%s", base_dist[i], SEPARATOR(i, D_CODES-1, 10)); } fclose(header); } #endif /* GEN_TREES_H */ /* =========================================================================== * Initialize the tree data structures for a new zlib stream. */ void ZLIB_INTERNAL _tr_init(s) deflate_state *s; { tr_static_init(); s->l_desc.dyn_tree = s->dyn_ltree; s->l_desc.stat_desc = &static_l_desc; s->d_desc.dyn_tree = s->dyn_dtree; s->d_desc.stat_desc = &static_d_desc; s->bl_desc.dyn_tree = s->bl_tree; s->bl_desc.stat_desc = &static_bl_desc; s->bi_buf = 0; s->bi_valid = 0; #ifdef ZLIB_DEBUG s->compressed_len = 0L; s->bits_sent = 0L; #endif /* Initialize the first block of the first file: */ init_block(s); } /* =========================================================================== * Initialize a new block. */ local void init_block(s) deflate_state *s; { int n; /* iterates over tree elements */ /* Initialize the trees. */ for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0; for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0; for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0; s->dyn_ltree[END_BLOCK].Freq = 1; s->opt_len = s->static_len = 0L; s->last_lit = s->matches = 0; } #define SMALLEST 1 /* Index within the heap array of least frequent node in the Huffman tree */ /* =========================================================================== * Remove the smallest element from the heap and recreate the heap with * one less element. Updates heap and heap_len. */ #define pqremove(s, tree, top) \ {\ top = s->heap[SMALLEST]; \ s->heap[SMALLEST] = s->heap[s->heap_len--]; \ pqdownheap(s, tree, SMALLEST); \ } /* =========================================================================== * Compares to subtrees, using the tree depth as tie breaker when * the subtrees have equal frequency. This minimizes the worst case length. */ #define smaller(tree, n, m, depth) \ (tree[n].Freq < tree[m].Freq || \ (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m])) /* =========================================================================== * Restore the heap property by moving down the tree starting at node k, * exchanging a node with the smallest of its two sons if necessary, stopping * when the heap property is re-established (each father smaller than its * two sons). */ local void pqdownheap(s, tree, k) deflate_state *s; ct_data *tree; /* the tree to restore */ int k; /* node to move down */ { int v = s->heap[k]; int j = k << 1; /* left son of k */ while (j <= s->heap_len) { /* Set j to the smallest of the two sons: */ if (j < s->heap_len && smaller(tree, s->heap[j+1], s->heap[j], s->depth)) { j++; } /* Exit if v is smaller than both sons */ if (smaller(tree, v, s->heap[j], s->depth)) break; /* Exchange v with the smallest son */ s->heap[k] = s->heap[j]; k = j; /* And continue down the tree, setting j to the left son of k */ j <<= 1; } s->heap[k] = v; } /* =========================================================================== * Compute the optimal bit lengths for a tree and update the total bit length * for the current block. * IN assertion: the fields freq and dad are set, heap[heap_max] and * above are the tree nodes sorted by increasing frequency. * OUT assertions: the field len is set to the optimal bit length, the * array bl_count contains the frequencies for each bit length. * The length opt_len is updated; static_len is also updated if stree is * not null. */ local void gen_bitlen(s, desc) deflate_state *s; tree_desc *desc; /* the tree descriptor */ { ct_data *tree = desc->dyn_tree; int max_code = desc->max_code; const ct_data *stree = desc->stat_desc->static_tree; const intf *extra = desc->stat_desc->extra_bits; int base = desc->stat_desc->extra_base; int max_length = desc->stat_desc->max_length; int h; /* heap index */ int n, m; /* iterate over the tree elements */ int bits; /* bit length */ int xbits; /* extra bits */ ush f; /* frequency */ int overflow = 0; /* number of elements with bit length too large */ for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0; /* In a first pass, compute the optimal bit lengths (which may * overflow in the case of the bit length tree). */ tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */ for (h = s->heap_max+1; h < HEAP_SIZE; h++) { n = s->heap[h]; bits = tree[tree[n].Dad].Len + 1; if (bits > max_length) bits = max_length, overflow++; tree[n].Len = (ush)bits; /* We overwrite tree[n].Dad which is no longer needed */ if (n > max_code) continue; /* not a leaf node */ s->bl_count[bits]++; xbits = 0; if (n >= base) xbits = extra[n-base]; f = tree[n].Freq; s->opt_len += (ulg)f * (unsigned)(bits + xbits); if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits); } if (overflow == 0) return; Tracev((stderr,"\nbit length overflow\n")); /* This happens for example on obj2 and pic of the Calgary corpus */ /* Find the first bit length which could increase: */ do { bits = max_length-1; while (s->bl_count[bits] == 0) bits--; s->bl_count[bits]--; /* move one leaf down the tree */ s->bl_count[bits+1] += 2; /* move one overflow item as its brother */ s->bl_count[max_length]--; /* The brother of the overflow item also moves one step up, * but this does not affect bl_count[max_length] */ overflow -= 2; } while (overflow > 0); /* Now recompute all bit lengths, scanning in increasing frequency. * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all * lengths instead of fixing only the wrong ones. This idea is taken * from 'ar' written by Haruhiko Okumura.) */ for (bits = max_length; bits != 0; bits--) { n = s->bl_count[bits]; while (n != 0) { m = s->heap[--h]; if (m > max_code) continue; if ((unsigned) tree[m].Len != (unsigned) bits) { Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); s->opt_len += ((ulg)bits - tree[m].Len) * tree[m].Freq; tree[m].Len = (ush)bits; } n--; } } } /* =========================================================================== * Generate the codes for a given tree and bit counts (which need not be * optimal). * IN assertion: the array bl_count contains the bit length statistics for * the given tree and the field len is set for all tree elements. * OUT assertion: the field code is set for all tree elements of non * zero code length. */ local void gen_codes (tree, max_code, bl_count) ct_data *tree; /* the tree to decorate */ int max_code; /* largest code with non zero frequency */ ushf *bl_count; /* number of codes at each bit length */ { ush next_code[MAX_BITS+1]; /* next code value for each bit length */ unsigned code = 0; /* running code value */ int bits; /* bit index */ int n; /* code index */ /* The distribution counts are first used to generate the code values * without bit reversal. */ for (bits = 1; bits <= MAX_BITS; bits++) { code = (code + bl_count[bits-1]) << 1; next_code[bits] = (ush)code; } /* Check that the bit counts in bl_count are consistent. The last code * must be all ones. */ Assert (code + bl_count[MAX_BITS]-1 == (1<dyn_tree; const ct_data *stree = desc->stat_desc->static_tree; int elems = desc->stat_desc->elems; int n, m; /* iterate over heap elements */ int max_code = -1; /* largest code with non zero frequency */ int node; /* new node being created */ /* Construct the initial heap, with least frequent element in * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. * heap[0] is not used. */ s->heap_len = 0, s->heap_max = HEAP_SIZE; for (n = 0; n < elems; n++) { if (tree[n].Freq != 0) { s->heap[++(s->heap_len)] = max_code = n; s->depth[n] = 0; } else { tree[n].Len = 0; } } /* The pkzip format requires that at least one distance code exists, * and that at least one bit should be sent even if there is only one * possible code. So to avoid special checks later on we force at least * two codes of non zero frequency. */ while (s->heap_len < 2) { node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0); tree[node].Freq = 1; s->depth[node] = 0; s->opt_len--; if (stree) s->static_len -= stree[node].Len; /* node is 0 or 1 so it does not have extra bits */ } desc->max_code = max_code; /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, * establish sub-heaps of increasing lengths: */ for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n); /* Construct the Huffman tree by repeatedly combining the least two * frequent nodes. */ node = elems; /* next internal node of the tree */ do { pqremove(s, tree, n); /* n = node of least frequency */ m = s->heap[SMALLEST]; /* m = node of next least frequency */ s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */ s->heap[--(s->heap_max)] = m; /* Create a new node father of n and m */ tree[node].Freq = tree[n].Freq + tree[m].Freq; s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ? s->depth[n] : s->depth[m]) + 1); tree[n].Dad = tree[m].Dad = (ush)node; #ifdef DUMP_BL_TREE if (tree == s->bl_tree) { fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)", node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq); } #endif /* and insert the new node in the heap */ s->heap[SMALLEST] = node++; pqdownheap(s, tree, SMALLEST); } while (s->heap_len >= 2); s->heap[--(s->heap_max)] = s->heap[SMALLEST]; /* At this point, the fields freq and dad are set. We can now * generate the bit lengths. */ gen_bitlen(s, (tree_desc *)desc); /* The field len is now set, we can generate the bit codes */ gen_codes ((ct_data *)tree, max_code, s->bl_count); } /* =========================================================================== * Scan a literal or distance tree to determine the frequencies of the codes * in the bit length tree. */ local void scan_tree (s, tree, max_code) deflate_state *s; ct_data *tree; /* the tree to be scanned */ int max_code; /* and its largest code of non zero frequency */ { int n; /* iterates over all tree elements */ int prevlen = -1; /* last emitted length */ int curlen; /* length of current code */ int nextlen = tree[0].Len; /* length of next code */ int count = 0; /* repeat count of the current code */ int max_count = 7; /* max repeat count */ int min_count = 4; /* min repeat count */ if (nextlen == 0) max_count = 138, min_count = 3; tree[max_code+1].Len = (ush)0xffff; /* guard */ for (n = 0; n <= max_code; n++) { curlen = nextlen; nextlen = tree[n+1].Len; if (++count < max_count && curlen == nextlen) { continue; } else if (count < min_count) { s->bl_tree[curlen].Freq += count; } else if (curlen != 0) { if (curlen != prevlen) s->bl_tree[curlen].Freq++; s->bl_tree[REP_3_6].Freq++; } else if (count <= 10) { s->bl_tree[REPZ_3_10].Freq++; } else { s->bl_tree[REPZ_11_138].Freq++; } count = 0; prevlen = curlen; if (nextlen == 0) { max_count = 138, min_count = 3; } else if (curlen == nextlen) { max_count = 6, min_count = 3; } else { max_count = 7, min_count = 4; } } } /* =========================================================================== * Send a literal or distance tree in compressed form, using the codes in * bl_tree. */ local void send_tree (s, tree, max_code) deflate_state *s; ct_data *tree; /* the tree to be scanned */ int max_code; /* and its largest code of non zero frequency */ { int n; /* iterates over all tree elements */ int prevlen = -1; /* last emitted length */ int curlen; /* length of current code */ int nextlen = tree[0].Len; /* length of next code */ int count = 0; /* repeat count of the current code */ int max_count = 7; /* max repeat count */ int min_count = 4; /* min repeat count */ /* tree[max_code+1].Len = -1; */ /* guard already set */ if (nextlen == 0) max_count = 138, min_count = 3; for (n = 0; n <= max_code; n++) { curlen = nextlen; nextlen = tree[n+1].Len; if (++count < max_count && curlen == nextlen) { continue; } else if (count < min_count) { do { send_code(s, curlen, s->bl_tree); } while (--count != 0); } else if (curlen != 0) { if (curlen != prevlen) { send_code(s, curlen, s->bl_tree); count--; } Assert(count >= 3 && count <= 6, " 3_6?"); send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2); } else if (count <= 10) { send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3); } else { send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7); } count = 0; prevlen = curlen; if (nextlen == 0) { max_count = 138, min_count = 3; } else if (curlen == nextlen) { max_count = 6, min_count = 3; } else { max_count = 7, min_count = 4; } } } /* =========================================================================== * Construct the Huffman tree for the bit lengths and return the index in * bl_order of the last bit length code to send. */ local int build_bl_tree(s) deflate_state *s; { int max_blindex; /* index of last bit length code of non zero freq */ /* Determine the bit length frequencies for literal and distance trees */ scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code); scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code); /* Build the bit length tree: */ build_tree(s, (tree_desc *)(&(s->bl_desc))); /* opt_len now includes the length of the tree representations, except * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. */ /* Determine the number of bit length codes to send. The pkzip format * requires that at least 4 bit length codes be sent. (appnote.txt says * 3 but the actual value used is 4.) */ for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { if (s->bl_tree[bl_order[max_blindex]].Len != 0) break; } /* Update opt_len to include the bit length tree and counts */ s->opt_len += 3*((ulg)max_blindex+1) + 5+5+4; Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", s->opt_len, s->static_len)); return max_blindex; } /* =========================================================================== * Send the header for a block using dynamic Huffman trees: the counts, the * lengths of the bit length codes, the literal tree and the distance tree. * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. */ local void send_all_trees(s, lcodes, dcodes, blcodes) deflate_state *s; int lcodes, dcodes, blcodes; /* number of codes for each tree */ { int rank; /* index in bl_order */ Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, "too many codes"); Tracev((stderr, "\nbl counts: ")); send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ send_bits(s, dcodes-1, 5); send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ for (rank = 0; rank < blcodes; rank++) { Tracev((stderr, "\nbl code %2d ", bl_order[rank])); send_bits(s, s->bl_tree[bl_order[rank]].Len, 3); } Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */ Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */ Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); } /* =========================================================================== * Send a stored block */ void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last) deflate_state *s; charf *buf; /* input block */ ulg stored_len; /* length of input block */ int last; /* one if this is the last block for a file */ { send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */ bi_windup(s); /* align on byte boundary */ put_short(s, (ush)stored_len); put_short(s, (ush)~stored_len); zmemcpy(s->pending_buf + s->pending, (Bytef *)buf, stored_len); s->pending += stored_len; #ifdef ZLIB_DEBUG s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L; s->compressed_len += (stored_len + 4) << 3; s->bits_sent += 2*16; s->bits_sent += stored_len<<3; #endif } /* =========================================================================== * Flush the bits in the bit buffer to pending output (leaves at most 7 bits) */ void ZLIB_INTERNAL _tr_flush_bits(s) deflate_state *s; { bi_flush(s); } /* =========================================================================== * Send one empty static block to give enough lookahead for inflate. * This takes 10 bits, of which 7 may remain in the bit buffer. */ void ZLIB_INTERNAL _tr_align(s) deflate_state *s; { send_bits(s, STATIC_TREES<<1, 3); send_code(s, END_BLOCK, static_ltree); #ifdef ZLIB_DEBUG s->compressed_len += 10L; /* 3 for block type, 7 for EOB */ #endif bi_flush(s); } /* =========================================================================== * Determine the best encoding for the current block: dynamic trees, static * trees or store, and write out the encoded block. */ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last) deflate_state *s; charf *buf; /* input block, or NULL if too old */ ulg stored_len; /* length of input block */ int last; /* one if this is the last block for a file */ { ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */ int max_blindex = 0; /* index of last bit length code of non zero freq */ /* Build the Huffman trees unless a stored block is forced */ if (s->level > 0) { /* Check if the file is binary or text */ if (s->strm->data_type == Z_UNKNOWN) s->strm->data_type = detect_data_type(s); /* Construct the literal and distance trees */ build_tree(s, (tree_desc *)(&(s->l_desc))); Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, s->static_len)); build_tree(s, (tree_desc *)(&(s->d_desc))); Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, s->static_len)); /* At this point, opt_len and static_len are the total bit lengths of * the compressed block data, excluding the tree representations. */ /* Build the bit length tree for the above two trees, and get the index * in bl_order of the last bit length code to send. */ max_blindex = build_bl_tree(s); /* Determine the best encoding. Compute the block lengths in bytes. */ opt_lenb = (s->opt_len+3+7)>>3; static_lenb = (s->static_len+3+7)>>3; Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, s->last_lit)); if (static_lenb <= opt_lenb) opt_lenb = static_lenb; } else { Assert(buf != (char*)0, "lost buf"); opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ } #ifdef FORCE_STORED if (buf != (char*)0) { /* force stored block */ #else if (stored_len+4 <= opt_lenb && buf != (char*)0) { /* 4: two words for the lengths */ #endif /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. * Otherwise we can't have processed more than WSIZE input bytes since * the last block flush, because compression would have been * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to * transform a block into a stored block. */ _tr_stored_block(s, buf, stored_len, last); #ifdef FORCE_STATIC } else if (static_lenb >= 0) { /* force static trees */ #else } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) { #endif send_bits(s, (STATIC_TREES<<1)+last, 3); compress_block(s, (const ct_data *)static_ltree, (const ct_data *)static_dtree); #ifdef ZLIB_DEBUG s->compressed_len += 3 + s->static_len; #endif } else { send_bits(s, (DYN_TREES<<1)+last, 3); send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1, max_blindex+1); compress_block(s, (const ct_data *)s->dyn_ltree, (const ct_data *)s->dyn_dtree); #ifdef ZLIB_DEBUG s->compressed_len += 3 + s->opt_len; #endif } Assert (s->compressed_len == s->bits_sent, "bad compressed size"); /* The above check is made mod 2^32, for files larger than 512 MB * and uLong implemented on 32 bits. */ init_block(s); if (last) { bi_windup(s); #ifdef ZLIB_DEBUG s->compressed_len += 7; /* align on byte boundary */ #endif } Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, s->compressed_len-7*last)); } /* =========================================================================== * Save the match info and tally the frequency counts. Return true if * the current block must be flushed. */ int ZLIB_INTERNAL _tr_tally (s, dist, lc) deflate_state *s; unsigned dist; /* distance of matched string */ unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ { s->d_buf[s->last_lit] = (ush)dist; s->l_buf[s->last_lit++] = (uch)lc; if (dist == 0) { /* lc is the unmatched char */ s->dyn_ltree[lc].Freq++; } else { s->matches++; /* Here, lc is the match length - MIN_MATCH */ dist--; /* dist = match distance - 1 */ Assert((ush)dist < (ush)MAX_DIST(s) && (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++; s->dyn_dtree[d_code(dist)].Freq++; } #ifdef TRUNCATE_BLOCK /* Try to guess if it is profitable to stop the current block here */ if ((s->last_lit & 0x1fff) == 0 && s->level > 2) { /* Compute an upper bound for the compressed length */ ulg out_length = (ulg)s->last_lit*8L; ulg in_length = (ulg)((long)s->strstart - s->block_start); int dcode; for (dcode = 0; dcode < D_CODES; dcode++) { out_length += (ulg)s->dyn_dtree[dcode].Freq * (5L+extra_dbits[dcode]); } out_length >>= 3; Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", s->last_lit, in_length, out_length, 100L - out_length*100L/in_length)); if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1; } #endif return (s->last_lit == s->lit_bufsize-1); /* We avoid equality with lit_bufsize because of wraparound at 64K * on 16 bit machines and because stored blocks are restricted to * 64K-1 bytes. */ } /* =========================================================================== * Send the block data compressed using the given Huffman trees */ local void compress_block(s, ltree, dtree) deflate_state *s; const ct_data *ltree; /* literal tree */ const ct_data *dtree; /* distance tree */ { unsigned dist; /* distance of matched string */ int lc; /* match length or unmatched char (if dist == 0) */ unsigned lx = 0; /* running index in l_buf */ unsigned code; /* the code to send */ int extra; /* number of extra bits to send */ if (s->last_lit != 0) do { dist = s->d_buf[lx]; lc = s->l_buf[lx++]; if (dist == 0) { send_code(s, lc, ltree); /* send a literal byte */ Tracecv(isgraph(lc), (stderr," '%c' ", lc)); } else { /* Here, lc is the match length - MIN_MATCH */ code = _length_code[lc]; send_code(s, code+LITERALS+1, ltree); /* send the length code */ extra = extra_lbits[code]; if (extra != 0) { lc -= base_length[code]; send_bits(s, lc, extra); /* send the extra length bits */ } dist--; /* dist is now the match distance - 1 */ code = d_code(dist); Assert (code < D_CODES, "bad d_code"); send_code(s, code, dtree); /* send the distance code */ extra = extra_dbits[code]; if (extra != 0) { dist -= (unsigned)base_dist[code]; send_bits(s, dist, extra); /* send the extra distance bits */ } } /* literal or match pair ? */ /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, "pendingBuf overflow"); } while (lx < s->last_lit); send_code(s, END_BLOCK, ltree); } /* =========================================================================== * Check if the data type is TEXT or BINARY, using the following algorithm: * - TEXT if the two conditions below are satisfied: * a) There are no non-portable control characters belonging to the * "black list" (0..6, 14..25, 28..31). * b) There is at least one printable character belonging to the * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). * - BINARY otherwise. * - The following partially-portable control characters form a * "gray list" that is ignored in this detection algorithm: * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). * IN assertion: the fields Freq of dyn_ltree are set. */ local int detect_data_type(s) deflate_state *s; { /* black_mask is the bit mask of black-listed bytes * set bits 0..6, 14..25, and 28..31 * 0xf3ffc07f = binary 11110011111111111100000001111111 */ unsigned long black_mask = 0xf3ffc07fUL; int n; /* Check for non-textual ("black-listed") bytes. */ for (n = 0; n <= 31; n++, black_mask >>= 1) if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0)) return Z_BINARY; /* Check for textual ("white-listed") bytes. */ if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0 || s->dyn_ltree[13].Freq != 0) return Z_TEXT; for (n = 32; n < LITERALS; n++) if (s->dyn_ltree[n].Freq != 0) return Z_TEXT; /* There are no "black-listed" or "white-listed" bytes: * this stream either is empty or has tolerated ("gray-listed") bytes only. */ return Z_BINARY; } /* =========================================================================== * Reverse the first len bits of a code, using straightforward code (a faster * method would use a table) * IN assertion: 1 <= len <= 15 */ local unsigned bi_reverse(code, len) unsigned code; /* the value to invert */ int len; /* its bit length */ { register unsigned res = 0; do { res |= code & 1; code >>= 1, res <<= 1; } while (--len > 0); return res >> 1; } /* =========================================================================== * Flush the bit buffer, keeping at most 7 bits in it. */ local void bi_flush(s) deflate_state *s; { if (s->bi_valid == 16) { put_short(s, s->bi_buf); s->bi_buf = 0; s->bi_valid = 0; } else if (s->bi_valid >= 8) { put_byte(s, (Byte)s->bi_buf); s->bi_buf >>= 8; s->bi_valid -= 8; } } /* =========================================================================== * Flush the bit buffer and align the output on a byte boundary */ local void bi_windup(s) deflate_state *s; { if (s->bi_valid > 8) { put_short(s, s->bi_buf); } else if (s->bi_valid > 0) { put_byte(s, (Byte)s->bi_buf); } s->bi_buf = 0; s->bi_valid = 0; #ifdef ZLIB_DEBUG s->bits_sent = (s->bits_sent+7) & ~7; #endif } zlib-1.2.11.dfsg/zlib.h0000644000175000017500000027375713036730604014472 0ustar brooniebroonie/* zlib.h -- interface of the 'zlib' general purpose compression library version 1.2.11, January 15th, 2017 Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler jloup@gzip.org madler@alumni.caltech.edu The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). */ #ifndef ZLIB_H #define ZLIB_H #include "zconf.h" #ifdef __cplusplus extern "C" { #endif #define ZLIB_VERSION "1.2.11" #define ZLIB_VERNUM 0x12b0 #define ZLIB_VER_MAJOR 1 #define ZLIB_VER_MINOR 2 #define ZLIB_VER_REVISION 11 #define ZLIB_VER_SUBREVISION 0 /* The 'zlib' compression library provides in-memory compression and decompression functions, including integrity checks of the uncompressed data. This version of the library supports only one compression method (deflation) but other algorithms will be added later and will have the same stream interface. Compression can be done in a single step if the buffers are large enough, or can be done by repeated calls of the compression function. In the latter case, the application must provide more input and/or consume the output (providing more output space) before each call. The compressed data format used by default by the in-memory functions is the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped around a deflate stream, which is itself documented in RFC 1951. The library also supports reading and writing files in gzip (.gz) format with an interface similar to that of stdio using the functions that start with "gz". The gzip format is different from the zlib format. gzip is a gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. This library can optionally read and write gzip and raw deflate streams in memory as well. The zlib format was designed to be compact and fast for use in memory and on communications channels. The gzip format was designed for single- file compression on file systems, has a larger header than zlib to maintain directory information, and uses a different, slower check method than zlib. The library does not install any signal handler. The decoder checks the consistency of the compressed data, so the library should never crash even in the case of corrupted input. */ typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size)); typedef void (*free_func) OF((voidpf opaque, voidpf address)); struct internal_state; typedef struct z_stream_s { z_const Bytef *next_in; /* next input byte */ uInt avail_in; /* number of bytes available at next_in */ uLong total_in; /* total number of input bytes read so far */ Bytef *next_out; /* next output byte will go here */ uInt avail_out; /* remaining free space at next_out */ uLong total_out; /* total number of bytes output so far */ z_const char *msg; /* last error message, NULL if no error */ struct internal_state FAR *state; /* not visible by applications */ alloc_func zalloc; /* used to allocate the internal state */ free_func zfree; /* used to free the internal state */ voidpf opaque; /* private data object passed to zalloc and zfree */ int data_type; /* best guess about the data type: binary or text for deflate, or the decoding state for inflate */ uLong adler; /* Adler-32 or CRC-32 value of the uncompressed data */ uLong reserved; /* reserved for future use */ } z_stream; typedef z_stream FAR *z_streamp; /* gzip header information passed to and from zlib routines. See RFC 1952 for more details on the meanings of these fields. */ typedef struct gz_header_s { int text; /* true if compressed data believed to be text */ uLong time; /* modification time */ int xflags; /* extra flags (not used when writing a gzip file) */ int os; /* operating system */ Bytef *extra; /* pointer to extra field or Z_NULL if none */ uInt extra_len; /* extra field length (valid if extra != Z_NULL) */ uInt extra_max; /* space at extra (only when reading header) */ Bytef *name; /* pointer to zero-terminated file name or Z_NULL */ uInt name_max; /* space at name (only when reading header) */ Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */ uInt comm_max; /* space at comment (only when reading header) */ int hcrc; /* true if there was or will be a header crc */ int done; /* true when done reading gzip header (not used when writing a gzip file) */ } gz_header; typedef gz_header FAR *gz_headerp; /* The application must update next_in and avail_in when avail_in has dropped to zero. It must update next_out and avail_out when avail_out has dropped to zero. The application must initialize zalloc, zfree and opaque before calling the init function. All other fields are set by the compression library and must not be updated by the application. The opaque value provided by the application will be passed as the first parameter for calls of zalloc and zfree. This can be useful for custom memory management. The compression library attaches no meaning to the opaque value. zalloc must return Z_NULL if there is not enough memory for the object. If zlib is used in a multi-threaded application, zalloc and zfree must be thread safe. In that case, zlib is thread-safe. When zalloc and zfree are Z_NULL on entry to the initialization function, they are set to internal routines that use the standard library functions malloc() and free(). On 16-bit systems, the functions zalloc and zfree must be able to allocate exactly 65536 bytes, but will not be required to allocate more than this if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers returned by zalloc for objects of exactly 65536 bytes *must* have their offset normalized to zero. The default allocation function provided by this library ensures this (see zutil.c). To reduce memory requirements and avoid any allocation of 64K objects, at the expense of compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h). The fields total_in and total_out can be used for statistics or progress reports. After compression, total_in holds the total size of the uncompressed data and may be saved for use by the decompressor (particularly if the decompressor wants to decompress everything in a single step). */ /* constants */ #define Z_NO_FLUSH 0 #define Z_PARTIAL_FLUSH 1 #define Z_SYNC_FLUSH 2 #define Z_FULL_FLUSH 3 #define Z_FINISH 4 #define Z_BLOCK 5 #define Z_TREES 6 /* Allowed flush values; see deflate() and inflate() below for details */ #define Z_OK 0 #define Z_STREAM_END 1 #define Z_NEED_DICT 2 #define Z_ERRNO (-1) #define Z_STREAM_ERROR (-2) #define Z_DATA_ERROR (-3) #define Z_MEM_ERROR (-4) #define Z_BUF_ERROR (-5) #define Z_VERSION_ERROR (-6) /* Return codes for the compression/decompression functions. Negative values * are errors, positive values are used for special but normal events. */ #define Z_NO_COMPRESSION 0 #define Z_BEST_SPEED 1 #define Z_BEST_COMPRESSION 9 #define Z_DEFAULT_COMPRESSION (-1) /* compression levels */ #define Z_FILTERED 1 #define Z_HUFFMAN_ONLY 2 #define Z_RLE 3 #define Z_FIXED 4 #define Z_DEFAULT_STRATEGY 0 /* compression strategy; see deflateInit2() below for details */ #define Z_BINARY 0 #define Z_TEXT 1 #define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ #define Z_UNKNOWN 2 /* Possible values of the data_type field for deflate() */ #define Z_DEFLATED 8 /* The deflate compression method (the only one supported in this version) */ #define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ #define zlib_version zlibVersion() /* for compatibility with versions < 1.0.2 */ /* basic functions */ ZEXTERN const char * ZEXPORT zlibVersion OF((void)); /* The application can compare zlibVersion and ZLIB_VERSION for consistency. If the first character differs, the library code actually used is not compatible with the zlib.h header file used by the application. This check is automatically made by deflateInit and inflateInit. */ /* ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level)); Initializes the internal stream state for compression. The fields zalloc, zfree and opaque must be initialized before by the caller. If zalloc and zfree are set to Z_NULL, deflateInit updates them to use default allocation functions. The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: 1 gives best speed, 9 gives best compression, 0 gives no compression at all (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION requests a default compromise between speed and compression (currently equivalent to level 6). deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_STREAM_ERROR if level is not a valid compression level, or Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible with the version assumed by the caller (ZLIB_VERSION). msg is set to null if there is no error message. deflateInit does not perform any compression: this will be done by deflate(). */ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush)); /* deflate compresses as much data as possible, and stops when the input buffer becomes empty or the output buffer becomes full. It may introduce some output latency (reading input without producing any output) except when forced to flush. The detailed semantics are as follows. deflate performs one or both of the following actions: - Compress more input starting at next_in and update next_in and avail_in accordingly. If not all input can be processed (because there is not enough room in the output buffer), next_in and avail_in are updated and processing will resume at this point for the next call of deflate(). - Generate more output starting at next_out and update next_out and avail_out accordingly. This action is forced if the parameter flush is non zero. Forcing flush frequently degrades the compression ratio, so this parameter should be set only when necessary. Some output may be provided even if flush is zero. Before the call of deflate(), the application should ensure that at least one of the actions is possible, by providing more input and/or consuming more output, and updating avail_in or avail_out accordingly; avail_out should never be zero before the call. The application can consume the compressed output when it wants, for example when the output buffer is full (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK and with zero avail_out, it must be called again after making room in the output buffer because there might be more output pending. See deflatePending(), which can be used if desired to determine whether or not there is more ouput in that case. Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to decide how much data to accumulate before producing output, in order to maximize compression. If the parameter flush is set to Z_SYNC_FLUSH, all pending output is flushed to the output buffer and the output is aligned on a byte boundary, so that the decompressor can get all input data available so far. (In particular avail_in is zero after the call if enough output space has been provided before the call.) Flushing may degrade compression for some compression algorithms and so it should be used only when necessary. This completes the current deflate block and follows it with an empty stored block that is three bits plus filler bits to the next byte, followed by four bytes (00 00 ff ff). If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the output buffer, but the output is not aligned to a byte boundary. All of the input data so far will be available to the decompressor, as for Z_SYNC_FLUSH. This completes the current deflate block and follows it with an empty fixed codes block that is 10 bits long. This assures that enough bytes are output in order for the decompressor to finish the block before the empty fixed codes block. If flush is set to Z_BLOCK, a deflate block is completed and emitted, as for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to seven bits of the current block are held to be written as the next byte after the next deflate block is completed. In this case, the decompressor may not be provided enough bits at this point in order to complete decompression of the data provided so far to the compressor. It may need to wait for the next block to be emitted. This is for advanced applications that need to control the emission of deflate blocks. If flush is set to Z_FULL_FLUSH, all output is flushed as with Z_SYNC_FLUSH, and the compression state is reset so that decompression can restart from this point if previous compressed data has been damaged or if random access is desired. Using Z_FULL_FLUSH too often can seriously degrade compression. If deflate returns with avail_out == 0, this function must be called again with the same value of the flush parameter and more output space (updated avail_out), until the flush is complete (deflate returns with non-zero avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that avail_out is greater than six to avoid repeated flush markers due to avail_out == 0 on return. If the parameter flush is set to Z_FINISH, pending input is processed, pending output is flushed and deflate returns with Z_STREAM_END if there was enough output space. If deflate returns with Z_OK or Z_BUF_ERROR, this function must be called again with Z_FINISH and more output space (updated avail_out) but no more input data, until it returns with Z_STREAM_END or an error. After deflate has returned Z_STREAM_END, the only possible operations on the stream are deflateReset or deflateEnd. Z_FINISH can be used in the first deflate call after deflateInit if all the compression is to be done in a single step. In order to complete in one call, avail_out must be at least the value returned by deflateBound (see below). Then deflate is guaranteed to return Z_STREAM_END. If not enough output space is provided, deflate will not return Z_STREAM_END, and it must be called again as described above. deflate() sets strm->adler to the Adler-32 checksum of all input read so far (that is, total_in bytes). If a gzip stream is being generated, then strm->adler will be the CRC-32 checksum of the input read so far. (See deflateInit2 below.) deflate() may update strm->data_type if it can make a good guess about the input data type (Z_BINARY or Z_TEXT). If in doubt, the data is considered binary. This field is only for information purposes and does not affect the compression algorithm in any manner. deflate() returns Z_OK if some progress has been made (more input processed or more output produced), Z_STREAM_END if all input has been consumed and all output has been produced (only when flush is set to Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example if next_in or next_out was Z_NULL or the state was inadvertently written over by the application), or Z_BUF_ERROR if no progress is possible (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not fatal, and deflate() can be called again with more input and more output space to continue compressing. */ ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm)); /* All dynamically allocated data structures for this stream are freed. This function discards any unprocessed input and does not flush any pending output. deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state was inconsistent, Z_DATA_ERROR if the stream was freed prematurely (some input or output was discarded). In the error case, msg may be set but then points to a static string (which must not be deallocated). */ /* ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm)); Initializes the internal stream state for decompression. The fields next_in, avail_in, zalloc, zfree and opaque must be initialized before by the caller. In the current version of inflate, the provided input is not read or consumed. The allocation of a sliding window will be deferred to the first call of inflate (if the decompression does not complete on the first call). If zalloc and zfree are set to Z_NULL, inflateInit updates them to use default allocation functions. inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_VERSION_ERROR if the zlib library version is incompatible with the version assumed by the caller, or Z_STREAM_ERROR if the parameters are invalid, such as a null pointer to the structure. msg is set to null if there is no error message. inflateInit does not perform any decompression. Actual decompression will be done by inflate(). So next_in, and avail_in, next_out, and avail_out are unused and unchanged. The current implementation of inflateInit() does not process any header information -- that is deferred until inflate() is called. */ ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush)); /* inflate decompresses as much data as possible, and stops when the input buffer becomes empty or the output buffer becomes full. It may introduce some output latency (reading input without producing any output) except when forced to flush. The detailed semantics are as follows. inflate performs one or both of the following actions: - Decompress more input starting at next_in and update next_in and avail_in accordingly. If not all input can be processed (because there is not enough room in the output buffer), then next_in and avail_in are updated accordingly, and processing will resume at this point for the next call of inflate(). - Generate more output starting at next_out and update next_out and avail_out accordingly. inflate() provides as much output as possible, until there is no more input data or no more space in the output buffer (see below about the flush parameter). Before the call of inflate(), the application should ensure that at least one of the actions is possible, by providing more input and/or consuming more output, and updating the next_* and avail_* values accordingly. If the caller of inflate() does not provide both available input and available output space, it is possible that there will be no progress made. The application can consume the uncompressed output when it wants, for example when the output buffer is full (avail_out == 0), or after each call of inflate(). If inflate returns Z_OK and with zero avail_out, it must be called again after making room in the output buffer because there might be more output pending. The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH, Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much output as possible to the output buffer. Z_BLOCK requests that inflate() stop if and when it gets to the next deflate block boundary. When decoding the zlib or gzip format, this will cause inflate() to return immediately after the header and before the first block. When doing a raw inflate, inflate() will go ahead and process the first block, and will return when it gets to the end of that block, or when it runs out of data. The Z_BLOCK option assists in appending to or combining deflate streams. To assist in this, on return inflate() always sets strm->data_type to the number of unused bits in the last byte taken from strm->next_in, plus 64 if inflate() is currently decoding the last block in the deflate stream, plus 128 if inflate() returned immediately after decoding an end-of-block code or decoding the complete header up to just before the first byte of the deflate stream. The end-of-block will not be indicated until all of the uncompressed data from that block has been written to strm->next_out. The number of unused bits may in general be greater than seven, except when bit 7 of data_type is set, in which case the number of unused bits will be less than eight. data_type is set as noted here every time inflate() returns for all flush options, and so can be used to determine the amount of currently consumed input in bits. The Z_TREES option behaves as Z_BLOCK does, but it also returns when the end of each deflate block header is reached, before any actual data in that block is decoded. This allows the caller to determine the length of the deflate block header for later use in random access within a deflate block. 256 is added to the value of strm->data_type when inflate() returns immediately after reaching the end of the deflate block header. inflate() should normally be called until it returns Z_STREAM_END or an error. However if all decompression is to be performed in a single step (a single call of inflate), the parameter flush should be set to Z_FINISH. In this case all pending input is processed and all pending output is flushed; avail_out must be large enough to hold all of the uncompressed data for the operation to complete. (The size of the uncompressed data may have been saved by the compressor for this purpose.) The use of Z_FINISH is not required to perform an inflation in one step. However it may be used to inform inflate that a faster approach can be used for the single inflate() call. Z_FINISH also informs inflate to not maintain a sliding window if the stream completes, which reduces inflate's memory footprint. If the stream does not complete, either because not all of the stream is provided or not enough output space is provided, then a sliding window will be allocated and inflate() can be called again to continue the operation as if Z_NO_FLUSH had been used. In this implementation, inflate() always flushes as much output as possible to the output buffer, and always uses the faster approach on the first call. So the effects of the flush parameter in this implementation are on the return value of inflate() as noted below, when inflate() returns early when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of memory for a sliding window when Z_FINISH is used. If a preset dictionary is needed after this call (see inflateSetDictionary below), inflate sets strm->adler to the Adler-32 checksum of the dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise it sets strm->adler to the Adler-32 checksum of all output produced so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described below. At the end of the stream, inflate() checks that its computed Adler-32 checksum is equal to that saved by the compressor and returns Z_STREAM_END only if the checksum is correct. inflate() can decompress and check either zlib-wrapped or gzip-wrapped deflate data. The header type is detected automatically, if requested when initializing with inflateInit2(). Any information contained in the gzip header is not retained unless inflateGetHeader() is used. When processing gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output produced so far. The CRC-32 is checked against the gzip trailer, as is the uncompressed length, modulo 2^32. inflate() returns Z_OK if some progress has been made (more input processed or more output produced), Z_STREAM_END if the end of the compressed data has been reached and all uncompressed output has been produced, Z_NEED_DICT if a preset dictionary is needed at this point, Z_DATA_ERROR if the input data was corrupted (input stream not conforming to the zlib format or incorrect check value, in which case strm->msg points to a string with a more specific error), Z_STREAM_ERROR if the stream structure was inconsistent (for example next_in or next_out was Z_NULL, or the state was inadvertently written over by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if no progress was possible or if there was not enough room in the output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and inflate() can be called again with more input and more output space to continue decompressing. If Z_DATA_ERROR is returned, the application may then call inflateSync() to look for a good compression block if a partial recovery of the data is to be attempted. */ ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm)); /* All dynamically allocated data structures for this stream are freed. This function discards any unprocessed input and does not flush any pending output. inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state was inconsistent. */ /* Advanced functions */ /* The following functions are needed only in some special applications. */ /* ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy)); This is another version of deflateInit with more compression options. The fields next_in, zalloc, zfree and opaque must be initialized before by the caller. The method parameter is the compression method. It must be Z_DEFLATED in this version of the library. The windowBits parameter is the base two logarithm of the window size (the size of the history buffer). It should be in the range 8..15 for this version of the library. Larger values of this parameter result in better compression at the expense of memory usage. The default value is 15 if deflateInit is used instead. For the current implementation of deflate(), a windowBits value of 8 (a window size of 256 bytes) is not supported. As a result, a request for 8 will result in 9 (a 512-byte window). In that case, providing 8 to inflateInit2() will result in an error when the zlib header with 9 is checked against the initialization of inflate(). The remedy is to not use 8 with deflateInit2() with this initialization, or at least in that case use 9 with inflateInit2(). windowBits can also be -8..-15 for raw deflate. In this case, -windowBits determines the window size. deflate() will then generate raw deflate data with no zlib header or trailer, and will not compute a check value. windowBits can also be greater than 15 for optional gzip encoding. Add 16 to windowBits to write a simple gzip header and trailer around the compressed data instead of a zlib wrapper. The gzip header will have no file name, no extra data, no comment, no modification time (set to zero), no header crc, and the operating system will be set to the appropriate value, if the operating system was determined at compile time. If a gzip stream is being written, strm->adler is a CRC-32 instead of an Adler-32. For raw deflate or gzip encoding, a request for a 256-byte window is rejected as invalid, since only the zlib header provides a means of transmitting the window size to the decompressor. The memLevel parameter specifies how much memory should be allocated for the internal compression state. memLevel=1 uses minimum memory but is slow and reduces compression ratio; memLevel=9 uses maximum memory for optimal speed. The default value is 8. See zconf.h for total memory usage as a function of windowBits and memLevel. The strategy parameter is used to tune the compression algorithm. Use the value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no string match), or Z_RLE to limit match distances to one (run-length encoding). Filtered data consists mostly of small values with a somewhat random distribution. In this case, the compression algorithm is tuned to compress them better. The effect of Z_FILTERED is to force more Huffman coding and less string matching; it is somewhat intermediate between Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The strategy parameter only affects the compression ratio but not the correctness of the compressed output even if it is not set appropriately. Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler decoder for special applications. deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible with the version assumed by the caller (ZLIB_VERSION). msg is set to null if there is no error message. deflateInit2 does not perform any compression: this will be done by deflate(). */ ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm, const Bytef *dictionary, uInt dictLength)); /* Initializes the compression dictionary from the given byte sequence without producing any compressed output. When using the zlib format, this function must be called immediately after deflateInit, deflateInit2 or deflateReset, and before any call of deflate. When doing raw deflate, this function must be called either before any call of deflate, or immediately after the completion of a deflate block, i.e. after all input has been consumed and all output has been delivered when using any of the flush options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The compressor and decompressor must use exactly the same dictionary (see inflateSetDictionary). The dictionary should consist of strings (byte sequences) that are likely to be encountered later in the data to be compressed, with the most commonly used strings preferably put towards the end of the dictionary. Using a dictionary is most useful when the data to be compressed is short and can be predicted with good accuracy; the data can then be compressed better than with the default empty dictionary. Depending on the size of the compression data structures selected by deflateInit or deflateInit2, a part of the dictionary may in effect be discarded, for example if the dictionary is larger than the window size provided in deflateInit or deflateInit2. Thus the strings most likely to be useful should be put at the end of the dictionary, not at the front. In addition, the current implementation of deflate will use at most the window size minus 262 bytes of the provided dictionary. Upon return of this function, strm->adler is set to the Adler-32 value of the dictionary; the decompressor may later use this value to determine which dictionary has been used by the compressor. (The Adler-32 value applies to the whole dictionary even if only a subset of the dictionary is actually used by the compressor.) If a raw deflate was requested, then the Adler-32 value is not computed and strm->adler is not set. deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is inconsistent (for example if deflate has already been called for this stream or if not at a block boundary for raw deflate). deflateSetDictionary does not perform any compression: this will be done by deflate(). */ ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm, Bytef *dictionary, uInt *dictLength)); /* Returns the sliding dictionary being maintained by deflate. dictLength is set to the number of bytes in the dictionary, and that many bytes are copied to dictionary. dictionary must have enough space, where 32768 bytes is always enough. If deflateGetDictionary() is called with dictionary equal to Z_NULL, then only the dictionary length is returned, and nothing is copied. Similary, if dictLength is Z_NULL, then it is not set. deflateGetDictionary() may return a length less than the window size, even when more than the window size in input has been provided. It may return up to 258 bytes less in that case, due to how zlib's implementation of deflate manages the sliding window and lookahead for matches, where matches can be up to 258 bytes long. If the application needs the last window-size bytes of input, then that would need to be saved by the application outside of zlib. deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the stream state is inconsistent. */ ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest, z_streamp source)); /* Sets the destination stream as a complete copy of the source stream. This function can be useful when several compression strategies will be tried, for example when there are several ways of pre-processing the input data with a filter. The streams that will be discarded should then be freed by calling deflateEnd. Note that deflateCopy duplicates the internal compression state which can be quite large, so this strategy is slow and can consume lots of memory. deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_STREAM_ERROR if the source stream state was inconsistent (such as zalloc being Z_NULL). msg is left unchanged in both source and destination. */ ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm)); /* This function is equivalent to deflateEnd followed by deflateInit, but does not free and reallocate the internal compression state. The stream will leave the compression level and any other attributes that may have been set unchanged. deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent (such as zalloc or state being Z_NULL). */ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm, int level, int strategy)); /* Dynamically update the compression level and compression strategy. The interpretation of level and strategy is as in deflateInit2(). This can be used to switch between compression and straight copy of the input data, or to switch to a different kind of input data requiring a different strategy. If the compression approach (which is a function of the level) or the strategy is changed, and if any input has been consumed in a previous deflate() call, then the input available so far is compressed with the old level and strategy using deflate(strm, Z_BLOCK). There are three approaches for the compression levels 0, 1..3, and 4..9 respectively. The new level and strategy will take effect at the next call of deflate(). If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does not have enough output space to complete, then the parameter change will not take effect. In this case, deflateParams() can be called again with the same parameters and more output space to try again. In order to assure a change in the parameters on the first try, the deflate stream should be flushed using deflate() with Z_BLOCK or other flush request until strm.avail_out is not zero, before calling deflateParams(). Then no more input data should be provided before the deflateParams() call. If this is done, the old level and strategy will be applied to the data compressed before deflateParams(), and the new level and strategy will be applied to the the data compressed after deflateParams(). deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if there was not enough output space to complete the compression of the available input data before a change in the strategy or approach. Note that in the case of a Z_BUF_ERROR, the parameters are not changed. A return value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be retried with more output space. */ ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm, int good_length, int max_lazy, int nice_length, int max_chain)); /* Fine tune deflate's internal compression parameters. This should only be used by someone who understands the algorithm used by zlib's deflate for searching for the best matching string, and even then only by the most fanatic optimizer trying to squeeze out the last compressed bit for their specific input data. Read the deflate.c source code for the meaning of the max_lazy, good_length, nice_length, and max_chain parameters. deflateTune() can be called after deflateInit() or deflateInit2(), and returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream. */ ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm, uLong sourceLen)); /* deflateBound() returns an upper bound on the compressed size after deflation of sourceLen bytes. It must be called after deflateInit() or deflateInit2(), and after deflateSetHeader(), if used. This would be used to allocate an output buffer for deflation in a single pass, and so would be called before deflate(). If that first deflate() call is provided the sourceLen input bytes, an output buffer allocated to the size returned by deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed to return Z_STREAM_END. Note that it is possible for the compressed size to be larger than the value returned by deflateBound() if flush options other than Z_FINISH or Z_NO_FLUSH are used. */ ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm, unsigned *pending, int *bits)); /* deflatePending() returns the number of bytes and bits of output that have been generated, but not yet provided in the available output. The bytes not provided would be due to the available output space having being consumed. The number of bits of output not provided are between 0 and 7, where they await more bits to join them in order to fill out a full byte. If pending or bits are Z_NULL, then those values are not set. deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent. */ ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm, int bits, int value)); /* deflatePrime() inserts bits in the deflate output stream. The intent is that this function is used to start off the deflate output with the bits leftover from a previous deflate stream when appending to it. As such, this function can only be used for raw deflate, and must be used before the first deflate() call after a deflateInit2() or deflateReset(). bits must be less than or equal to 16, and that many of the least significant bits of value will be inserted in the output. deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the source stream state was inconsistent. */ ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm, gz_headerp head)); /* deflateSetHeader() provides gzip header information for when a gzip stream is requested by deflateInit2(). deflateSetHeader() may be called after deflateInit2() or deflateReset() and before the first call of deflate(). The text, time, os, extra field, name, and comment information in the provided gz_header structure are written to the gzip header (xflag is ignored -- the extra flags are set according to the compression level). The caller must assure that, if not Z_NULL, name and comment are terminated with a zero byte, and that if extra is not Z_NULL, that extra_len bytes are available there. If hcrc is true, a gzip header crc is included. Note that the current versions of the command-line version of gzip (up through version 1.3.x) do not support header crc's, and will report that it is a "multi-part gzip file" and give up. If deflateSetHeader is not used, the default gzip header has text false, the time set to zero, and os set to 255, with no extra, name, or comment fields. The gzip header is returned to the default state by deflateReset(). deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent. */ /* ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm, int windowBits)); This is another version of inflateInit with an extra parameter. The fields next_in, avail_in, zalloc, zfree and opaque must be initialized before by the caller. The windowBits parameter is the base two logarithm of the maximum window size (the size of the history buffer). It should be in the range 8..15 for this version of the library. The default value is 15 if inflateInit is used instead. windowBits must be greater than or equal to the windowBits value provided to deflateInit2() while compressing, or it must be equal to 15 if deflateInit2() was not used. If a compressed stream with a larger window size is given as input, inflate() will return with the error code Z_DATA_ERROR instead of trying to allocate a larger window. windowBits can also be zero to request that inflate use the window size in the zlib header of the compressed stream. windowBits can also be -8..-15 for raw inflate. In this case, -windowBits determines the window size. inflate() will then process raw deflate data, not looking for a zlib or gzip header, not generating a check value, and not looking for any check values for comparison at the end of the stream. This is for use with other formats that use the deflate compressed data format such as zip. Those formats provide their own check values. If a custom format is developed using the raw deflate format for compressed data, it is recommended that a check value such as an Adler-32 or a CRC-32 be applied to the uncompressed data as is done in the zlib, gzip, and zip formats. For most applications, the zlib format should be used as is. Note that comments above on the use in deflateInit2() applies to the magnitude of windowBits. windowBits can also be greater than 15 for optional gzip decoding. Add 32 to windowBits to enable zlib and gzip decoding with automatic header detection, or add 16 to decode only the gzip format (the zlib format will return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a CRC-32 instead of an Adler-32. Unlike the gunzip utility and gzread() (see below), inflate() will not automatically decode concatenated gzip streams. inflate() will return Z_STREAM_END at the end of the gzip stream. The state would need to be reset to continue decoding a subsequent gzip stream. inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_VERSION_ERROR if the zlib library version is incompatible with the version assumed by the caller, or Z_STREAM_ERROR if the parameters are invalid, such as a null pointer to the structure. msg is set to null if there is no error message. inflateInit2 does not perform any decompression apart from possibly reading the zlib header if present: actual decompression will be done by inflate(). (So next_in and avail_in may be modified, but next_out and avail_out are unused and unchanged.) The current implementation of inflateInit2() does not process any header information -- that is deferred until inflate() is called. */ ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm, const Bytef *dictionary, uInt dictLength)); /* Initializes the decompression dictionary from the given uncompressed byte sequence. This function must be called immediately after a call of inflate, if that call returned Z_NEED_DICT. The dictionary chosen by the compressor can be determined from the Adler-32 value returned by that call of inflate. The compressor and decompressor must use exactly the same dictionary (see deflateSetDictionary). For raw inflate, this function can be called at any time to set the dictionary. If the provided dictionary is smaller than the window and there is already data in the window, then the provided dictionary will amend what's there. The application must insure that the dictionary that was used for compression is provided. inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the expected one (incorrect Adler-32 value). inflateSetDictionary does not perform any decompression: this will be done by subsequent calls of inflate(). */ ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm, Bytef *dictionary, uInt *dictLength)); /* Returns the sliding dictionary being maintained by inflate. dictLength is set to the number of bytes in the dictionary, and that many bytes are copied to dictionary. dictionary must have enough space, where 32768 bytes is always enough. If inflateGetDictionary() is called with dictionary equal to Z_NULL, then only the dictionary length is returned, and nothing is copied. Similary, if dictLength is Z_NULL, then it is not set. inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the stream state is inconsistent. */ ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm)); /* Skips invalid compressed data until a possible full flush point (see above for the description of deflate with Z_FULL_FLUSH) can be found, or until all available input is skipped. No output is provided. inflateSync searches for a 00 00 FF FF pattern in the compressed data. All full flush points have this pattern, but not all occurrences of this pattern are full flush points. inflateSync returns Z_OK if a possible full flush point has been found, Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point has been found, or Z_STREAM_ERROR if the stream structure was inconsistent. In the success case, the application may save the current current value of total_in which indicates where valid compressed data was found. In the error case, the application may repeatedly call inflateSync, providing more input each time, until success or end of the input data. */ ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest, z_streamp source)); /* Sets the destination stream as a complete copy of the source stream. This function can be useful when randomly accessing a large stream. The first pass through the stream can periodically record the inflate state, allowing restarting inflate at those points when randomly accessing the stream. inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_STREAM_ERROR if the source stream state was inconsistent (such as zalloc being Z_NULL). msg is left unchanged in both source and destination. */ ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm)); /* This function is equivalent to inflateEnd followed by inflateInit, but does not free and reallocate the internal decompression state. The stream will keep attributes that may have been set by inflateInit2. inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent (such as zalloc or state being Z_NULL). */ ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm, int windowBits)); /* This function is the same as inflateReset, but it also permits changing the wrap and window size requests. The windowBits parameter is interpreted the same as it is for inflateInit2. If the window size is changed, then the memory allocated for the window is freed, and the window will be reallocated by inflate() if needed. inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent (such as zalloc or state being Z_NULL), or if the windowBits parameter is invalid. */ ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm, int bits, int value)); /* This function inserts bits in the inflate input stream. The intent is that this function is used to start inflating at a bit position in the middle of a byte. The provided bits will be used before any bytes are used from next_in. This function should only be used with raw inflate, and should be used before the first inflate() call after inflateInit2() or inflateReset(). bits must be less than or equal to 16, and that many of the least significant bits of value will be inserted in the input. If bits is negative, then the input stream bit buffer is emptied. Then inflatePrime() can be called again to put bits in the buffer. This is used to clear out bits leftover after feeding inflate a block description prior to feeding inflate codes. inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent. */ ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm)); /* This function returns two values, one in the lower 16 bits of the return value, and the other in the remaining upper bits, obtained by shifting the return value down 16 bits. If the upper value is -1 and the lower value is zero, then inflate() is currently decoding information outside of a block. If the upper value is -1 and the lower value is non-zero, then inflate is in the middle of a stored block, with the lower value equaling the number of bytes from the input remaining to copy. If the upper value is not -1, then it is the number of bits back from the current bit position in the input of the code (literal or length/distance pair) currently being processed. In that case the lower value is the number of bytes already emitted for that code. A code is being processed if inflate is waiting for more input to complete decoding of the code, or if it has completed decoding but is waiting for more output space to write the literal or match data. inflateMark() is used to mark locations in the input data for random access, which may be at bit positions, and to note those cases where the output of a code may span boundaries of random access blocks. The current location in the input stream can be determined from avail_in and data_type as noted in the description for the Z_BLOCK flush parameter for inflate. inflateMark returns the value noted above, or -65536 if the provided source stream state was inconsistent. */ ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm, gz_headerp head)); /* inflateGetHeader() requests that gzip header information be stored in the provided gz_header structure. inflateGetHeader() may be called after inflateInit2() or inflateReset(), and before the first call of inflate(). As inflate() processes the gzip stream, head->done is zero until the header is completed, at which time head->done is set to one. If a zlib stream is being decoded, then head->done is set to -1 to indicate that there will be no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be used to force inflate() to return immediately after header processing is complete and before any actual data is decompressed. The text, time, xflags, and os fields are filled in with the gzip header contents. hcrc is set to true if there is a header CRC. (The header CRC was valid if done is set to one.) If extra is not Z_NULL, then extra_max contains the maximum number of bytes to write to extra. Once done is true, extra_len contains the actual extra field length, and extra contains the extra field, or that field truncated if extra_max is less than extra_len. If name is not Z_NULL, then up to name_max characters are written there, terminated with a zero unless the length is greater than name_max. If comment is not Z_NULL, then up to comm_max characters are written there, terminated with a zero unless the length is greater than comm_max. When any of extra, name, or comment are not Z_NULL and the respective field is not present in the header, then that field is set to Z_NULL to signal its absence. This allows the use of deflateSetHeader() with the returned structure to duplicate the header. However if those fields are set to allocated memory, then the application will need to save those pointers elsewhere so that they can be eventually freed. If inflateGetHeader is not used, then the header information is simply discarded. The header is always checked for validity, including the header CRC if present. inflateReset() will reset the process to discard the header information. The application would need to call inflateGetHeader() again to retrieve the header from the next gzip stream. inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source stream state was inconsistent. */ /* ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits, unsigned char FAR *window)); Initialize the internal stream state for decompression using inflateBack() calls. The fields zalloc, zfree and opaque in strm must be initialized before the call. If zalloc and zfree are Z_NULL, then the default library- derived memory allocation routines are used. windowBits is the base two logarithm of the window size, in the range 8..15. window is a caller supplied buffer of that size. Except for special applications where it is assured that deflate was used with small window sizes, windowBits must be 15 and a 32K byte window must be supplied to be able to decompress general deflate streams. See inflateBack() for the usage of these routines. inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of the parameters are invalid, Z_MEM_ERROR if the internal state could not be allocated, or Z_VERSION_ERROR if the version of the library does not match the version of the header file. */ typedef unsigned (*in_func) OF((void FAR *, z_const unsigned char FAR * FAR *)); typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned)); ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm, in_func in, void FAR *in_desc, out_func out, void FAR *out_desc)); /* inflateBack() does a raw inflate with a single call using a call-back interface for input and output. This is potentially more efficient than inflate() for file i/o applications, in that it avoids copying between the output and the sliding window by simply making the window itself the output buffer. inflate() can be faster on modern CPUs when used with large buffers. inflateBack() trusts the application to not change the output buffer passed by the output function, at least until inflateBack() returns. inflateBackInit() must be called first to allocate the internal state and to initialize the state with the user-provided window buffer. inflateBack() may then be used multiple times to inflate a complete, raw deflate stream with each call. inflateBackEnd() is then called to free the allocated state. A raw deflate stream is one with no zlib or gzip header or trailer. This routine would normally be used in a utility that reads zip or gzip files and writes out uncompressed files. The utility would decode the header and process the trailer on its own, hence this routine expects only the raw deflate stream to decompress. This is different from the default behavior of inflate(), which expects a zlib header and trailer around the deflate stream. inflateBack() uses two subroutines supplied by the caller that are then called by inflateBack() for input and output. inflateBack() calls those routines until it reads a complete deflate stream and writes out all of the uncompressed data, or until it encounters an error. The function's parameters and return types are defined above in the in_func and out_func typedefs. inflateBack() will call in(in_desc, &buf) which should return the number of bytes of provided input, and a pointer to that input in buf. If there is no input available, in() must return zero -- buf is ignored in that case -- and inflateBack() will return a buffer error. inflateBack() will call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out() should return zero on success, or non-zero on failure. If out() returns non-zero, inflateBack() will return with an error. Neither in() nor out() are permitted to change the contents of the window provided to inflateBackInit(), which is also the buffer that out() uses to write from. The length written by out() will be at most the window size. Any non-zero amount of input may be provided by in(). For convenience, inflateBack() can be provided input on the first call by setting strm->next_in and strm->avail_in. If that input is exhausted, then in() will be called. Therefore strm->next_in must be initialized before calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in must also be initialized, and then if strm->avail_in is not zero, input will initially be taken from strm->next_in[0 .. strm->avail_in - 1]. The in_desc and out_desc parameters of inflateBack() is passed as the first parameter of in() and out() respectively when they are called. These descriptors can be optionally used to pass any information that the caller- supplied in() and out() functions need to do their job. On return, inflateBack() will set strm->next_in and strm->avail_in to pass back any unused input that was provided by the last in() call. The return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR if in() or out() returned an error, Z_DATA_ERROR if there was a format error in the deflate stream (in which case strm->msg is set to indicate the nature of the error), or Z_STREAM_ERROR if the stream was not properly initialized. In the case of Z_BUF_ERROR, an input or output error can be distinguished using strm->next_in which will be Z_NULL only if in() returned an error. If strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning non-zero. (in() will always be called before out(), so strm->next_in is assured to be defined if out() returns non-zero.) Note that inflateBack() cannot return Z_OK. */ ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm)); /* All memory allocated by inflateBackInit() is freed. inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream state was inconsistent. */ ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void)); /* Return flags indicating compile-time options. Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other: 1.0: size of uInt 3.2: size of uLong 5.4: size of voidpf (pointer) 7.6: size of z_off_t Compiler, assembler, and debug options: 8: ZLIB_DEBUG 9: ASMV or ASMINF -- use ASM code 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention 11: 0 (reserved) One-time table building (smaller code, but not thread-safe if true): 12: BUILDFIXED -- build static block decoding tables when needed 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed 14,15: 0 (reserved) Library content (indicates missing functionality): 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking deflate code when not needed) 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect and decode gzip streams (to avoid linking crc code) 18-19: 0 (reserved) Operation variations (changes in library functionality): 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate 21: FASTEST -- deflate algorithm with only one, lowest compression level 22,23: 0 (reserved) The sprintf variant used by gzprintf (zero is best): 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! 26: 0 = returns value, 1 = void -- 1 means inferred string length returned Remainder: 27-31: 0 (reserved) */ #ifndef Z_SOLO /* utility functions */ /* The following utility functions are implemented on top of the basic stream-oriented functions. To simplify the interface, some default options are assumed (compression level and memory usage, standard memory allocation functions). The source code of these utility functions can be modified if you need special options. */ ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)); /* Compresses the source buffer into the destination buffer. sourceLen is the byte length of the source buffer. Upon entry, destLen is the total size of the destination buffer, which must be at least the value returned by compressBound(sourceLen). Upon exit, destLen is the actual size of the compressed data. compress() is equivalent to compress2() with a level parameter of Z_DEFAULT_COMPRESSION. compress returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer. */ ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen, int level)); /* Compresses the source buffer into the destination buffer. The level parameter has the same meaning as in deflateInit. sourceLen is the byte length of the source buffer. Upon entry, destLen is the total size of the destination buffer, which must be at least the value returned by compressBound(sourceLen). Upon exit, destLen is the actual size of the compressed data. compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer, Z_STREAM_ERROR if the level parameter is invalid. */ ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen)); /* compressBound() returns an upper bound on the compressed size after compress() or compress2() on sourceLen bytes. It would be used before a compress() or compress2() call to allocate the destination buffer. */ ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)); /* Decompresses the source buffer into the destination buffer. sourceLen is the byte length of the source buffer. Upon entry, destLen is the total size of the destination buffer, which must be large enough to hold the entire uncompressed data. (The size of the uncompressed data must have been saved previously by the compressor and transmitted to the decompressor by some mechanism outside the scope of this compression library.) Upon exit, destLen is the actual size of the uncompressed data. uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In the case where there is not enough room, uncompress() will fill the output buffer with the uncompressed data up to that point. */ ZEXTERN int ZEXPORT uncompress2 OF((Bytef *dest, uLongf *destLen, const Bytef *source, uLong *sourceLen)); /* Same as uncompress, except that sourceLen is a pointer, where the length of the source is *sourceLen. On return, *sourceLen is the number of source bytes consumed. */ /* gzip file access functions */ /* This library supports reading and writing files in gzip (.gz) format with an interface similar to that of stdio, using the functions that start with "gz". The gzip format is different from the zlib format. gzip is a gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. */ typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */ /* ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode)); Opens a gzip (.gz) file for reading or writing. The mode parameter is as in fopen ("rb" or "wb") but can also include a compression level ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F' for fixed code compression as in "wb9F". (See the description of deflateInit2 for more information about the strategy parameter.) 'T' will request transparent writing or appending with no compression and not using the gzip format. "a" can be used instead of "w" to request that the gzip stream that will be written be appended to the file. "+" will result in an error, since reading and writing to the same gzip file is not supported. The addition of "x" when writing will create the file exclusively, which fails if the file already exists. On systems that support it, the addition of "e" when reading or writing will set the flag to close the file on an execve() call. These functions, as well as gzip, will read and decode a sequence of gzip streams in a file. The append function of gzopen() can be used to create such a file. (Also see gzflush() for another way to do this.) When appending, gzopen does not test whether the file begins with a gzip stream, nor does it look for the end of the gzip streams to begin appending. gzopen will simply append a gzip stream to the existing file. gzopen can be used to read a file which is not in gzip format; in this case gzread will directly read from the file without decompression. When reading, this will be detected automatically by looking for the magic two- byte gzip header. gzopen returns NULL if the file could not be opened, if there was insufficient memory to allocate the gzFile state, or if an invalid mode was specified (an 'r', 'w', or 'a' was not provided, or '+' was provided). errno can be checked to determine if the reason gzopen failed was that the file could not be opened. */ ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode)); /* gzdopen associates a gzFile with the file descriptor fd. File descriptors are obtained from calls like open, dup, creat, pipe or fileno (if the file has been previously opened with fopen). The mode parameter is as in gzopen. The next call of gzclose on the returned gzFile will also close the file descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd, mode);. The duplicated descriptor should be saved to avoid a leak, since gzdopen does not close fd if it fails. If you are using fileno() to get the file descriptor from a FILE *, then you will have to use dup() to avoid double-close()ing the file descriptor. Both gzclose() and fclose() will close the associated file descriptor, so they need to have different file descriptors. gzdopen returns NULL if there was insufficient memory to allocate the gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not provided, or '+' was provided), or if fd is -1. The file descriptor is not used until the next gz* read, write, seek, or close operation, so gzdopen will not detect if fd is invalid (unless fd is -1). */ ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size)); /* Set the internal buffer size used by this library's functions. The default buffer size is 8192 bytes. This function must be called after gzopen() or gzdopen(), and before any other calls that read or write the file. The buffer memory allocation is always deferred to the first read or write. Three times that size in buffer space is allocated. A larger buffer size of, for example, 64K or 128K bytes will noticeably increase the speed of decompression (reading). The new buffer size also affects the maximum length for gzprintf(). gzbuffer() returns 0 on success, or -1 on failure, such as being called too late. */ ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy)); /* Dynamically update the compression level or strategy. See the description of deflateInit2 for the meaning of these parameters. Previously provided data is flushed before the parameter change. gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not opened for writing, Z_ERRNO if there is an error writing the flushed data, or Z_MEM_ERROR if there is a memory allocation error. */ ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len)); /* Reads the given number of uncompressed bytes from the compressed file. If the input file is not in gzip format, gzread copies the given number of bytes into the buffer directly from the file. After reaching the end of a gzip stream in the input, gzread will continue to read, looking for another gzip stream. Any number of gzip streams may be concatenated in the input file, and will all be decompressed by gzread(). If something other than a gzip stream is encountered after a gzip stream, that remaining trailing garbage is ignored (and no error is returned). gzread can be used to read a gzip file that is being concurrently written. Upon reaching the end of the input, gzread will return with the available data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then gzclearerr can be used to clear the end of file indicator in order to permit gzread to be tried again. Z_OK indicates that a gzip stream was completed on the last gzread. Z_BUF_ERROR indicates that the input file ended in the middle of a gzip stream. Note that gzread does not return -1 in the event of an incomplete gzip stream. This error is deferred until gzclose(), which will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip stream. Alternatively, gzerror can be used before gzclose to detect this case. gzread returns the number of uncompressed bytes actually read, less than len for end of file, or -1 for error. If len is too large to fit in an int, then nothing is read, -1 is returned, and the error state is set to Z_STREAM_ERROR. */ ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems, gzFile file)); /* Read up to nitems items of size size from file to buf, otherwise operating as gzread() does. This duplicates the interface of stdio's fread(), with size_t request and return types. If the library defines size_t, then z_size_t is identical to size_t. If not, then z_size_t is an unsigned integer type that can contain a pointer. gzfread() returns the number of full items read of size size, or zero if the end of the file was reached and a full item could not be read, or if there was an error. gzerror() must be consulted if zero is returned in order to determine if there was an error. If the multiplication of size and nitems overflows, i.e. the product does not fit in a z_size_t, then nothing is read, zero is returned, and the error state is set to Z_STREAM_ERROR. In the event that the end of file is reached and only a partial item is available at the end, i.e. the remaining uncompressed data length is not a multiple of size, then the final partial item is nevetheless read into buf and the end-of-file flag is set. The length of the partial item read is not provided, but could be inferred from the result of gztell(). This behavior is the same as the behavior of fread() implementations in common libraries, but it prevents the direct use of gzfread() to read a concurrently written file, reseting and retrying on end-of-file, when size is not 1. */ ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len)); /* Writes the given number of uncompressed bytes into the compressed file. gzwrite returns the number of uncompressed bytes written or 0 in case of error. */ ZEXTERN z_size_t ZEXPORT gzfwrite OF((voidpc buf, z_size_t size, z_size_t nitems, gzFile file)); /* gzfwrite() writes nitems items of size size from buf to file, duplicating the interface of stdio's fwrite(), with size_t request and return types. If the library defines size_t, then z_size_t is identical to size_t. If not, then z_size_t is an unsigned integer type that can contain a pointer. gzfwrite() returns the number of full items written of size size, or zero if there was an error. If the multiplication of size and nitems overflows, i.e. the product does not fit in a z_size_t, then nothing is written, zero is returned, and the error state is set to Z_STREAM_ERROR. */ ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...)); /* Converts, formats, and writes the arguments to the compressed file under control of the format string, as in fprintf. gzprintf returns the number of uncompressed bytes actually written, or a negative zlib error code in case of error. The number of uncompressed bytes written is limited to 8191, or one less than the buffer size given to gzbuffer(). The caller should assure that this limit is not exceeded. If it is exceeded, then gzprintf() will return an error (0) with nothing written. In this case, there may also be a buffer overflow with unpredictable consequences, which is possible only if zlib was compiled with the insecure functions sprintf() or vsprintf() because the secure snprintf() or vsnprintf() functions were not available. This can be determined using zlibCompileFlags(). */ ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s)); /* Writes the given null-terminated string to the compressed file, excluding the terminating null character. gzputs returns the number of characters written, or -1 in case of error. */ ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len)); /* Reads bytes from the compressed file until len-1 characters are read, or a newline character is read and transferred to buf, or an end-of-file condition is encountered. If any characters are read or if len == 1, the string is terminated with a null character. If no characters are read due to an end-of-file or len < 1, then the buffer is left untouched. gzgets returns buf which is a null-terminated string, or it returns NULL for end-of-file or in case of error. If there was an error, the contents at buf are indeterminate. */ ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c)); /* Writes c, converted to an unsigned char, into the compressed file. gzputc returns the value that was written, or -1 in case of error. */ ZEXTERN int ZEXPORT gzgetc OF((gzFile file)); /* Reads one byte from the compressed file. gzgetc returns this byte or -1 in case of end of file or error. This is implemented as a macro for speed. As such, it does not do all of the checking the other functions do. I.e. it does not check to see if file is NULL, nor whether the structure file points to has been clobbered or not. */ ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file)); /* Push one character back onto the stream to be read as the first character on the next read. At least one character of push-back is allowed. gzungetc() returns the character pushed, or -1 on failure. gzungetc() will fail if c is -1, and may fail if a character has been pushed but not read yet. If gzungetc is used immediately after gzopen or gzdopen, at least the output buffer size of pushed characters is allowed. (See gzbuffer above.) The pushed character will be discarded if the stream is repositioned with gzseek() or gzrewind(). */ ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush)); /* Flushes all pending output into the compressed file. The parameter flush is as in the deflate() function. The return value is the zlib error number (see function gzerror below). gzflush is only permitted when writing. If the flush parameter is Z_FINISH, the remaining data is written and the gzip stream is completed in the output. If gzwrite() is called again, a new gzip stream will be started in the output. gzread() is able to read such concatenated gzip streams. gzflush should be called only when strictly necessary because it will degrade compression if called too often. */ /* ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file, z_off_t offset, int whence)); Sets the starting position for the next gzread or gzwrite on the given compressed file. The offset represents a number of bytes in the uncompressed data stream. The whence parameter is defined as in lseek(2); the value SEEK_END is not supported. If the file is opened for reading, this function is emulated but can be extremely slow. If the file is opened for writing, only forward seeks are supported; gzseek then compresses a sequence of zeroes up to the new starting position. gzseek returns the resulting offset location as measured in bytes from the beginning of the uncompressed stream, or -1 in case of error, in particular if the file is opened for writing and the new starting position would be before the current position. */ ZEXTERN int ZEXPORT gzrewind OF((gzFile file)); /* Rewinds the given file. This function is supported only for reading. gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) */ /* ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file)); Returns the starting position for the next gzread or gzwrite on the given compressed file. This position represents a number of bytes in the uncompressed data stream, and is zero when starting, even if appending or reading a gzip stream from the middle of a file using gzdopen(). gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) */ /* ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file)); Returns the current offset in the file being read or written. This offset includes the count of bytes that precede the gzip stream, for example when appending or when using gzdopen() for reading. When reading, the offset does not include as yet unused buffered input. This information can be used for a progress indicator. On error, gzoffset() returns -1. */ ZEXTERN int ZEXPORT gzeof OF((gzFile file)); /* Returns true (1) if the end-of-file indicator has been set while reading, false (0) otherwise. Note that the end-of-file indicator is set only if the read tried to go past the end of the input, but came up short. Therefore, just like feof(), gzeof() may return false even if there is no more data to read, in the event that the last read request was for the exact number of bytes remaining in the input file. This will happen if the input file size is an exact multiple of the buffer size. If gzeof() returns true, then the read functions will return no more data, unless the end-of-file indicator is reset by gzclearerr() and the input file has grown since the previous end of file was detected. */ ZEXTERN int ZEXPORT gzdirect OF((gzFile file)); /* Returns true (1) if file is being copied directly while reading, or false (0) if file is a gzip stream being decompressed. If the input file is empty, gzdirect() will return true, since the input does not contain a gzip stream. If gzdirect() is used immediately after gzopen() or gzdopen() it will cause buffers to be allocated to allow reading the file to determine if it is a gzip file. Therefore if gzbuffer() is used, it should be called before gzdirect(). When writing, gzdirect() returns true (1) if transparent writing was requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note: gzdirect() is not needed when writing. Transparent writing must be explicitly requested, so the application already knows the answer. When linking statically, using gzdirect() will include all of the zlib code for gzip file reading and decompression, which may not be desired.) */ ZEXTERN int ZEXPORT gzclose OF((gzFile file)); /* Flushes all pending output if necessary, closes the compressed file and deallocates the (de)compression state. Note that once file is closed, you cannot call gzerror with file, since its structures have been deallocated. gzclose must not be called more than once on the same file, just as free must not be called more than once on the same allocation. gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the last read ended in the middle of a gzip stream, or Z_OK on success. */ ZEXTERN int ZEXPORT gzclose_r OF((gzFile file)); ZEXTERN int ZEXPORT gzclose_w OF((gzFile file)); /* Same as gzclose(), but gzclose_r() is only for use when reading, and gzclose_w() is only for use when writing or appending. The advantage to using these instead of gzclose() is that they avoid linking in zlib compression or decompression code that is not used when only reading or only writing respectively. If gzclose() is used, then both compression and decompression code will be included the application when linking to a static zlib library. */ ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum)); /* Returns the error message for the last error which occurred on the given compressed file. errnum is set to zlib error number. If an error occurred in the file system and not in the compression library, errnum is set to Z_ERRNO and the application may consult errno to get the exact error code. The application must not modify the returned string. Future calls to this function may invalidate the previously returned string. If file is closed, then the string previously returned by gzerror will no longer be available. gzerror() should be used to distinguish errors from end-of-file for those functions above that do not distinguish those cases in their return values. */ ZEXTERN void ZEXPORT gzclearerr OF((gzFile file)); /* Clears the error and end-of-file flags for file. This is analogous to the clearerr() function in stdio. This is useful for continuing to read a gzip file that is being written concurrently. */ #endif /* !Z_SOLO */ /* checksum functions */ /* These functions are not related to compression but are exported anyway because they might be useful in applications using the compression library. */ ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len)); /* Update a running Adler-32 checksum with the bytes buf[0..len-1] and return the updated checksum. If buf is Z_NULL, this function returns the required initial value for the checksum. An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed much faster. Usage example: uLong adler = adler32(0L, Z_NULL, 0); while (read_buffer(buffer, length) != EOF) { adler = adler32(adler, buffer, length); } if (adler != original_adler) error(); */ ZEXTERN uLong ZEXPORT adler32_z OF((uLong adler, const Bytef *buf, z_size_t len)); /* Same as adler32(), but with a size_t length. */ /* ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2, z_off_t len2)); Combine two Adler-32 checksums into one. For two sequences of bytes, seq1 and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note that the z_off_t type (like off_t) is a signed integer. If len2 is negative, the result has no meaning or utility. */ ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len)); /* Update a running CRC-32 with the bytes buf[0..len-1] and return the updated CRC-32. If buf is Z_NULL, this function returns the required initial value for the crc. Pre- and post-conditioning (one's complement) is performed within this function so it shouldn't be done by the application. Usage example: uLong crc = crc32(0L, Z_NULL, 0); while (read_buffer(buffer, length) != EOF) { crc = crc32(crc, buffer, length); } if (crc != original_crc) error(); */ ZEXTERN uLong ZEXPORT crc32_z OF((uLong adler, const Bytef *buf, z_size_t len)); /* Same as crc32(), but with a size_t length. */ /* ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2)); Combine two CRC-32 check values into one. For two sequences of bytes, seq1 and seq2 with lengths len1 and len2, CRC-32 check values were calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32 check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and len2. */ /* various hacks, don't look :) */ /* deflateInit and inflateInit are macros to allow checking the zlib version * and the compiler's view of z_stream: */ ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level, const char *version, int stream_size)); ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm, const char *version, int stream_size)); ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method, int windowBits, int memLevel, int strategy, const char *version, int stream_size)); ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits, const char *version, int stream_size)); ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits, unsigned char FAR *window, const char *version, int stream_size)); #ifdef Z_PREFIX_SET # define z_deflateInit(strm, level) \ deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream)) # define z_inflateInit(strm) \ inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream)) # define z_deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ (strategy), ZLIB_VERSION, (int)sizeof(z_stream)) # define z_inflateInit2(strm, windowBits) \ inflateInit2_((strm), (windowBits), ZLIB_VERSION, \ (int)sizeof(z_stream)) # define z_inflateBackInit(strm, windowBits, window) \ inflateBackInit_((strm), (windowBits), (window), \ ZLIB_VERSION, (int)sizeof(z_stream)) #else # define deflateInit(strm, level) \ deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream)) # define inflateInit(strm) \ inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream)) # define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ (strategy), ZLIB_VERSION, (int)sizeof(z_stream)) # define inflateInit2(strm, windowBits) \ inflateInit2_((strm), (windowBits), ZLIB_VERSION, \ (int)sizeof(z_stream)) # define inflateBackInit(strm, windowBits, window) \ inflateBackInit_((strm), (windowBits), (window), \ ZLIB_VERSION, (int)sizeof(z_stream)) #endif #ifndef Z_SOLO /* gzgetc() macro and its supporting function and exposed data structure. Note * that the real internal state is much larger than the exposed structure. * This abbreviated structure exposes just enough for the gzgetc() macro. The * user should not mess with these exposed elements, since their names or * behavior could change in the future, perhaps even capriciously. They can * only be used by the gzgetc() macro. You have been warned. */ struct gzFile_s { unsigned have; unsigned char *next; z_off64_t pos; }; ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */ #ifdef Z_PREFIX_SET # undef z_gzgetc # define z_gzgetc(g) \ ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g)) #else # define gzgetc(g) \ ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g)) #endif /* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if * both are true, the application gets the *64 functions, and the regular * functions are changed to 64 bits) -- in case these are set on systems * without large file support, _LFS64_LARGEFILE must also be true */ #ifdef Z_LARGE64 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t)); ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t)); #endif #if !defined(ZLIB_INTERNAL) && defined(Z_WANT64) # ifdef Z_PREFIX_SET # define z_gzopen z_gzopen64 # define z_gzseek z_gzseek64 # define z_gztell z_gztell64 # define z_gzoffset z_gzoffset64 # define z_adler32_combine z_adler32_combine64 # define z_crc32_combine z_crc32_combine64 # else # define gzopen gzopen64 # define gzseek gzseek64 # define gztell gztell64 # define gzoffset gzoffset64 # define adler32_combine adler32_combine64 # define crc32_combine crc32_combine64 # endif # ifndef Z_LARGE64 ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int)); ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile)); ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); # endif #else ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *)); ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int)); ZEXTERN z_off_t ZEXPORT gztell OF((gzFile)); ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile)); ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t)); #endif #else /* Z_SOLO */ ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t)); ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t)); #endif /* !Z_SOLO */ /* undocumented functions */ ZEXTERN const char * ZEXPORT zError OF((int)); ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp)); ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void)); ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int)); ZEXTERN int ZEXPORT inflateValidate OF((z_streamp, int)); ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF ((z_streamp)); ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp)); ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp)); #if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(Z_SOLO) ZEXTERN gzFile ZEXPORT gzopen_w OF((const wchar_t *path, const char *mode)); #endif #if defined(STDC) || defined(Z_HAVE_STDARG_H) # ifndef Z_SOLO ZEXTERN int ZEXPORTVA gzvprintf Z_ARG((gzFile file, const char *format, va_list va)); # endif #endif #ifdef __cplusplus } #endif #endif /* ZLIB_H */ zlib-1.2.11.dfsg/zconf.h0000644000175000017500000003765213032130646014635 0ustar brooniebroonie/* zconf.h -- configuration of the zlib compression library * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #ifndef ZCONF_H #define ZCONF_H /* * If you *really* need a unique prefix for all types and library functions, * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. * Even better than compiling with -DZ_PREFIX would be to use configure to set * this permanently in zconf.h using "./configure --zprefix". */ #ifdef Z_PREFIX /* may be set to #if 1 by ./configure */ # define Z_PREFIX_SET /* all linked symbols and init macros */ # define _dist_code z__dist_code # define _length_code z__length_code # define _tr_align z__tr_align # define _tr_flush_bits z__tr_flush_bits # define _tr_flush_block z__tr_flush_block # define _tr_init z__tr_init # define _tr_stored_block z__tr_stored_block # define _tr_tally z__tr_tally # define adler32 z_adler32 # define adler32_combine z_adler32_combine # define adler32_combine64 z_adler32_combine64 # define adler32_z z_adler32_z # ifndef Z_SOLO # define compress z_compress # define compress2 z_compress2 # define compressBound z_compressBound # endif # define crc32 z_crc32 # define crc32_combine z_crc32_combine # define crc32_combine64 z_crc32_combine64 # define crc32_z z_crc32_z # define deflate z_deflate # define deflateBound z_deflateBound # define deflateCopy z_deflateCopy # define deflateEnd z_deflateEnd # define deflateGetDictionary z_deflateGetDictionary # define deflateInit z_deflateInit # define deflateInit2 z_deflateInit2 # define deflateInit2_ z_deflateInit2_ # define deflateInit_ z_deflateInit_ # define deflateParams z_deflateParams # define deflatePending z_deflatePending # define deflatePrime z_deflatePrime # define deflateReset z_deflateReset # define deflateResetKeep z_deflateResetKeep # define deflateSetDictionary z_deflateSetDictionary # define deflateSetHeader z_deflateSetHeader # define deflateTune z_deflateTune # define deflate_copyright z_deflate_copyright # define get_crc_table z_get_crc_table # ifndef Z_SOLO # define gz_error z_gz_error # define gz_intmax z_gz_intmax # define gz_strwinerror z_gz_strwinerror # define gzbuffer z_gzbuffer # define gzclearerr z_gzclearerr # define gzclose z_gzclose # define gzclose_r z_gzclose_r # define gzclose_w z_gzclose_w # define gzdirect z_gzdirect # define gzdopen z_gzdopen # define gzeof z_gzeof # define gzerror z_gzerror # define gzflush z_gzflush # define gzfread z_gzfread # define gzfwrite z_gzfwrite # define gzgetc z_gzgetc # define gzgetc_ z_gzgetc_ # define gzgets z_gzgets # define gzoffset z_gzoffset # define gzoffset64 z_gzoffset64 # define gzopen z_gzopen # define gzopen64 z_gzopen64 # ifdef _WIN32 # define gzopen_w z_gzopen_w # endif # define gzprintf z_gzprintf # define gzputc z_gzputc # define gzputs z_gzputs # define gzread z_gzread # define gzrewind z_gzrewind # define gzseek z_gzseek # define gzseek64 z_gzseek64 # define gzsetparams z_gzsetparams # define gztell z_gztell # define gztell64 z_gztell64 # define gzungetc z_gzungetc # define gzvprintf z_gzvprintf # define gzwrite z_gzwrite # endif # define inflate z_inflate # define inflateBack z_inflateBack # define inflateBackEnd z_inflateBackEnd # define inflateBackInit z_inflateBackInit # define inflateBackInit_ z_inflateBackInit_ # define inflateCodesUsed z_inflateCodesUsed # define inflateCopy z_inflateCopy # define inflateEnd z_inflateEnd # define inflateGetDictionary z_inflateGetDictionary # define inflateGetHeader z_inflateGetHeader # define inflateInit z_inflateInit # define inflateInit2 z_inflateInit2 # define inflateInit2_ z_inflateInit2_ # define inflateInit_ z_inflateInit_ # define inflateMark z_inflateMark # define inflatePrime z_inflatePrime # define inflateReset z_inflateReset # define inflateReset2 z_inflateReset2 # define inflateResetKeep z_inflateResetKeep # define inflateSetDictionary z_inflateSetDictionary # define inflateSync z_inflateSync # define inflateSyncPoint z_inflateSyncPoint # define inflateUndermine z_inflateUndermine # define inflateValidate z_inflateValidate # define inflate_copyright z_inflate_copyright # define inflate_fast z_inflate_fast # define inflate_table z_inflate_table # ifndef Z_SOLO # define uncompress z_uncompress # define uncompress2 z_uncompress2 # endif # define zError z_zError # ifndef Z_SOLO # define zcalloc z_zcalloc # define zcfree z_zcfree # endif # define zlibCompileFlags z_zlibCompileFlags # define zlibVersion z_zlibVersion /* all zlib typedefs in zlib.h and zconf.h */ # define Byte z_Byte # define Bytef z_Bytef # define alloc_func z_alloc_func # define charf z_charf # define free_func z_free_func # ifndef Z_SOLO # define gzFile z_gzFile # endif # define gz_header z_gz_header # define gz_headerp z_gz_headerp # define in_func z_in_func # define intf z_intf # define out_func z_out_func # define uInt z_uInt # define uIntf z_uIntf # define uLong z_uLong # define uLongf z_uLongf # define voidp z_voidp # define voidpc z_voidpc # define voidpf z_voidpf /* all zlib structs in zlib.h and zconf.h */ # define gz_header_s z_gz_header_s # define internal_state z_internal_state #endif #if defined(__MSDOS__) && !defined(MSDOS) # define MSDOS #endif #if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) # define OS2 #endif #if defined(_WINDOWS) && !defined(WINDOWS) # define WINDOWS #endif #if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__) # ifndef WIN32 # define WIN32 # endif #endif #if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) # if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) # ifndef SYS16BIT # define SYS16BIT # endif # endif #endif /* * Compile with -DMAXSEG_64K if the alloc function cannot allocate more * than 64k bytes at a time (needed on systems with 16-bit int). */ #ifdef SYS16BIT # define MAXSEG_64K #endif #ifdef MSDOS # define UNALIGNED_OK #endif #ifdef __STDC_VERSION__ # ifndef STDC # define STDC # endif # if __STDC_VERSION__ >= 199901L # ifndef STDC99 # define STDC99 # endif # endif #endif #if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) # define STDC #endif #if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) # define STDC #endif #if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) # define STDC #endif #if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) # define STDC #endif #if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ # define STDC #endif #ifndef STDC # ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ # define const /* note: need a more gentle solution here */ # endif #endif #if defined(ZLIB_CONST) && !defined(z_const) # define z_const const #else # define z_const #endif #ifdef Z_SOLO typedef unsigned long z_size_t; #else # define z_longlong long long # if defined(NO_SIZE_T) typedef unsigned NO_SIZE_T z_size_t; # elif defined(STDC) # include typedef size_t z_size_t; # else typedef unsigned long z_size_t; # endif # undef z_longlong #endif /* Maximum value for memLevel in deflateInit2 */ #ifndef MAX_MEM_LEVEL # ifdef MAXSEG_64K # define MAX_MEM_LEVEL 8 # else # define MAX_MEM_LEVEL 9 # endif #endif /* Maximum value for windowBits in deflateInit2 and inflateInit2. * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files * created by gzip. (Files created by minigzip can still be extracted by * gzip.) */ #ifndef MAX_WBITS # define MAX_WBITS 15 /* 32K LZ77 window */ #endif /* The memory requirements for deflate are (in bytes): (1 << (windowBits+2)) + (1 << (memLevel+9)) that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) plus a few kilobytes for small objects. For example, if you want to reduce the default memory requirements from 256K to 128K, compile with make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" Of course this will generally degrade compression (there's no free lunch). The memory requirements for inflate are (in bytes) 1 << windowBits that is, 32K for windowBits=15 (default value) plus about 7 kilobytes for small objects. */ /* Type declarations */ #ifndef OF /* function prototypes */ # ifdef STDC # define OF(args) args # else # define OF(args) () # endif #endif #ifndef Z_ARG /* function prototypes for stdarg */ # if defined(STDC) || defined(Z_HAVE_STDARG_H) # define Z_ARG(args) args # else # define Z_ARG(args) () # endif #endif /* The following definitions for FAR are needed only for MSDOS mixed * model programming (small or medium model with some far allocations). * This was tested only with MSC; for other MSDOS compilers you may have * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, * just define FAR to be empty. */ #ifdef SYS16BIT # if defined(M_I86SM) || defined(M_I86MM) /* MSC small or medium model */ # define SMALL_MEDIUM # ifdef _MSC_VER # define FAR _far # else # define FAR far # endif # endif # if (defined(__SMALL__) || defined(__MEDIUM__)) /* Turbo C small or medium model */ # define SMALL_MEDIUM # ifdef __BORLANDC__ # define FAR _far # else # define FAR far # endif # endif #endif #if defined(WINDOWS) || defined(WIN32) /* If building or using zlib as a DLL, define ZLIB_DLL. * This is not mandatory, but it offers a little performance increase. */ # ifdef ZLIB_DLL # if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) # ifdef ZLIB_INTERNAL # define ZEXTERN extern __declspec(dllexport) # else # define ZEXTERN extern __declspec(dllimport) # endif # endif # endif /* ZLIB_DLL */ /* If building or using zlib with the WINAPI/WINAPIV calling convention, * define ZLIB_WINAPI. * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. */ # ifdef ZLIB_WINAPI # ifdef FAR # undef FAR # endif # include /* No need for _export, use ZLIB.DEF instead. */ /* For complete Windows compatibility, use WINAPI, not __stdcall. */ # define ZEXPORT WINAPI # ifdef WIN32 # define ZEXPORTVA WINAPIV # else # define ZEXPORTVA FAR CDECL # endif # endif #endif #if defined (__BEOS__) # ifdef ZLIB_DLL # ifdef ZLIB_INTERNAL # define ZEXPORT __declspec(dllexport) # define ZEXPORTVA __declspec(dllexport) # else # define ZEXPORT __declspec(dllimport) # define ZEXPORTVA __declspec(dllimport) # endif # endif #endif #ifndef ZEXTERN # define ZEXTERN extern #endif #ifndef ZEXPORT # define ZEXPORT #endif #ifndef ZEXPORTVA # define ZEXPORTVA #endif #ifndef FAR # define FAR #endif #if !defined(__MACTYPES__) typedef unsigned char Byte; /* 8 bits */ #endif typedef unsigned int uInt; /* 16 bits or more */ typedef unsigned long uLong; /* 32 bits or more */ #ifdef SMALL_MEDIUM /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ # define Bytef Byte FAR #else typedef Byte FAR Bytef; #endif typedef char FAR charf; typedef int FAR intf; typedef uInt FAR uIntf; typedef uLong FAR uLongf; #ifdef STDC typedef void const *voidpc; typedef void FAR *voidpf; typedef void *voidp; #else typedef Byte const *voidpc; typedef Byte FAR *voidpf; typedef Byte *voidp; #endif #if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC) # include # if (UINT_MAX == 0xffffffffUL) # define Z_U4 unsigned # elif (ULONG_MAX == 0xffffffffUL) # define Z_U4 unsigned long # elif (USHRT_MAX == 0xffffffffUL) # define Z_U4 unsigned short # endif #endif #ifdef Z_U4 typedef Z_U4 z_crc_t; #else typedef unsigned long z_crc_t; #endif #ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_UNISTD_H #endif #ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_STDARG_H #endif #ifdef STDC # ifndef Z_SOLO # include /* for off_t */ # endif #endif #if defined(STDC) || defined(Z_HAVE_STDARG_H) # ifndef Z_SOLO # include /* for va_list */ # endif #endif #ifdef _WIN32 # ifndef Z_SOLO # include /* for wchar_t */ # endif #endif /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even * though the former does not conform to the LFS document), but considering * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as * equivalently requesting no 64-bit operations */ #if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 # undef _LARGEFILE64_SOURCE #endif #if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H) # define Z_HAVE_UNISTD_H #endif #ifndef Z_SOLO # if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) # include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ # ifdef VMS # include /* for off_t */ # endif # ifndef z_off_t # define z_off_t off_t # endif # endif #endif #if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 # define Z_LFS64 #endif #if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) # define Z_LARGE64 #endif #if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) # define Z_WANT64 #endif #if !defined(SEEK_SET) && !defined(Z_SOLO) # define SEEK_SET 0 /* Seek from beginning of file. */ # define SEEK_CUR 1 /* Seek from current position. */ # define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ #endif #ifndef z_off_t # define z_off_t long #endif #if !defined(_WIN32) && defined(Z_LARGE64) # define z_off64_t off64_t #else # if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO) # define z_off64_t __int64 # else # define z_off64_t z_off_t # endif #endif /* MVS linker does not support external names larger than 8 bytes */ #if defined(__MVS__) #pragma map(deflateInit_,"DEIN") #pragma map(deflateInit2_,"DEIN2") #pragma map(deflateEnd,"DEEND") #pragma map(deflateBound,"DEBND") #pragma map(inflateInit_,"ININ") #pragma map(inflateInit2_,"ININ2") #pragma map(inflateEnd,"INEND") #pragma map(inflateSync,"INSY") #pragma map(inflateSetDictionary,"INSEDI") #pragma map(compressBound,"CMBND") #pragma map(inflate_table,"INTABL") #pragma map(inflate_fast,"INFA") #pragma map(inflate_copyright,"INCOPY") #endif #endif /* ZCONF_H */ zlib-1.2.11.dfsg/gzclose.c0000644000175000017500000000124611335640000015137 0ustar brooniebroonie/* gzclose.c -- zlib gzclose() function * Copyright (C) 2004, 2010 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "gzguts.h" /* gzclose() is in a separate file so that it is linked in only if it is used. That way the other gzclose functions can be used instead to avoid linking in unneeded compression or decompression routines. */ int ZEXPORT gzclose(file) gzFile file; { #ifndef NO_GZCOMPRESS gz_statep state; if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file); #else return gzclose_r(file); #endif } zlib-1.2.11.dfsg/deflate.c0000644000175000017500000023205113036730604015107 0ustar brooniebroonie/* deflate.c -- compress data using the deflation algorithm * Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* * ALGORITHM * * The "deflation" process depends on being able to identify portions * of the input text which are identical to earlier input (within a * sliding window trailing behind the input currently being processed). * * The most straightforward technique turns out to be the fastest for * most input files: try all possible matches and select the longest. * The key feature of this algorithm is that insertions into the string * dictionary are very simple and thus fast, and deletions are avoided * completely. Insertions are performed at each input character, whereas * string matches are performed only when the previous match ends. So it * is preferable to spend more time in matches to allow very fast string * insertions and avoid deletions. The matching algorithm for small * strings is inspired from that of Rabin & Karp. A brute force approach * is used to find longer strings when a small match has been found. * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze * (by Leonid Broukhis). * A previous version of this file used a more sophisticated algorithm * (by Fiala and Greene) which is guaranteed to run in linear amortized * time, but has a larger average cost, uses more memory and is patented. * However the F&G algorithm may be faster for some highly redundant * files if the parameter max_chain_length (described below) is too large. * * ACKNOWLEDGEMENTS * * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and * I found it in 'freeze' written by Leonid Broukhis. * Thanks to many people for bug reports and testing. * * REFERENCES * * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification". * Available in http://tools.ietf.org/html/rfc1951 * * A description of the Rabin and Karp algorithm is given in the book * "Algorithms" by R. Sedgewick, Addison-Wesley, p252. * * Fiala,E.R., and Greene,D.H. * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595 * */ /* @(#) $Id$ */ #include "deflate.h" const char deflate_copyright[] = " deflate 1.2.11 Copyright 1995-2017 Jean-loup Gailly and Mark Adler "; /* If you use the zlib library in a product, an acknowledgment is welcome in the documentation of your product. If for some reason you cannot include such an acknowledgment, I would appreciate that you keep this copyright string in the executable of your product. */ /* =========================================================================== * Function prototypes. */ typedef enum { need_more, /* block not completed, need more input or more output */ block_done, /* block flush performed */ finish_started, /* finish started, need only more output at next deflate */ finish_done /* finish done, accept no more input or output */ } block_state; typedef block_state (*compress_func) OF((deflate_state *s, int flush)); /* Compression function. Returns the block state after the call. */ local int deflateStateCheck OF((z_streamp strm)); local void slide_hash OF((deflate_state *s)); local void fill_window OF((deflate_state *s)); local block_state deflate_stored OF((deflate_state *s, int flush)); local block_state deflate_fast OF((deflate_state *s, int flush)); #ifndef FASTEST local block_state deflate_slow OF((deflate_state *s, int flush)); #endif local block_state deflate_rle OF((deflate_state *s, int flush)); local block_state deflate_huff OF((deflate_state *s, int flush)); local void lm_init OF((deflate_state *s)); local void putShortMSB OF((deflate_state *s, uInt b)); local void flush_pending OF((z_streamp strm)); local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); #ifdef ASMV # pragma message("Assembler code may have bugs -- use at your own risk") void match_init OF((void)); /* asm code initialization */ uInt longest_match OF((deflate_state *s, IPos cur_match)); #else local uInt longest_match OF((deflate_state *s, IPos cur_match)); #endif #ifdef ZLIB_DEBUG local void check_match OF((deflate_state *s, IPos start, IPos match, int length)); #endif /* =========================================================================== * Local data */ #define NIL 0 /* Tail of hash chains */ #ifndef TOO_FAR # define TOO_FAR 4096 #endif /* Matches of length 3 are discarded if their distance exceeds TOO_FAR */ /* Values for max_lazy_match, good_match and max_chain_length, depending on * the desired pack level (0..9). The values given below have been tuned to * exclude worst case performance for pathological files. Better values may be * found for specific files. */ typedef struct config_s { ush good_length; /* reduce lazy search above this match length */ ush max_lazy; /* do not perform lazy search above this match length */ ush nice_length; /* quit search above this match length */ ush max_chain; compress_func func; } config; #ifdef FASTEST local const config configuration_table[2] = { /* good lazy nice chain */ /* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ /* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */ #else local const config configuration_table[10] = { /* good lazy nice chain */ /* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ /* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */ /* 2 */ {4, 5, 16, 8, deflate_fast}, /* 3 */ {4, 6, 32, 32, deflate_fast}, /* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */ /* 5 */ {8, 16, 32, 32, deflate_slow}, /* 6 */ {8, 16, 128, 128, deflate_slow}, /* 7 */ {8, 32, 128, 256, deflate_slow}, /* 8 */ {32, 128, 258, 1024, deflate_slow}, /* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */ #endif /* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4 * For deflate_fast() (levels <= 3) good is ignored and lazy has a different * meaning. */ /* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */ #define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0)) /* =========================================================================== * Update a hash value with the given input byte * IN assertion: all calls to UPDATE_HASH are made with consecutive input * characters, so that a running hash key can be computed from the previous * key instead of complete recalculation each time. */ #define UPDATE_HASH(s,h,c) (h = (((h)<hash_shift) ^ (c)) & s->hash_mask) /* =========================================================================== * Insert string str in the dictionary and set match_head to the previous head * of the hash chain (the most recent string with same hash key). Return * the previous length of the hash chain. * If this file is compiled with -DFASTEST, the compression level is forced * to 1, and no hash chains are maintained. * IN assertion: all calls to INSERT_STRING are made with consecutive input * characters and the first MIN_MATCH bytes of str are valid (except for * the last MIN_MATCH-1 bytes of the input file). */ #ifdef FASTEST #define INSERT_STRING(s, str, match_head) \ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ match_head = s->head[s->ins_h], \ s->head[s->ins_h] = (Pos)(str)) #else #define INSERT_STRING(s, str, match_head) \ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \ s->head[s->ins_h] = (Pos)(str)) #endif /* =========================================================================== * Initialize the hash table (avoiding 64K overflow for 16 bit systems). * prev[] will be initialized on the fly. */ #define CLEAR_HASH(s) \ s->head[s->hash_size-1] = NIL; \ zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head)); /* =========================================================================== * Slide the hash table when sliding the window down (could be avoided with 32 * bit values at the expense of memory usage). We slide even when level == 0 to * keep the hash table consistent if we switch back to level > 0 later. */ local void slide_hash(s) deflate_state *s; { unsigned n, m; Posf *p; uInt wsize = s->w_size; n = s->hash_size; p = &s->head[n]; do { m = *--p; *p = (Pos)(m >= wsize ? m - wsize : NIL); } while (--n); n = wsize; #ifndef FASTEST p = &s->prev[n]; do { m = *--p; *p = (Pos)(m >= wsize ? m - wsize : NIL); /* If n is not on any hash chain, prev[n] is garbage but * its value will never be used. */ } while (--n); #endif } /* ========================================================================= */ int ZEXPORT deflateInit_(strm, level, version, stream_size) z_streamp strm; int level; const char *version; int stream_size; { return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, version, stream_size); /* To do: ignore strm->next_in if we use it as window */ } /* ========================================================================= */ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, version, stream_size) z_streamp strm; int level; int method; int windowBits; int memLevel; int strategy; const char *version; int stream_size; { deflate_state *s; int wrap = 1; static const char my_version[] = ZLIB_VERSION; ushf *overlay; /* We overlay pending_buf and d_buf+l_buf. This works since the average * output size for (length,distance) codes is <= 24 bits. */ if (version == Z_NULL || version[0] != my_version[0] || stream_size != sizeof(z_stream)) { return Z_VERSION_ERROR; } if (strm == Z_NULL) return Z_STREAM_ERROR; strm->msg = Z_NULL; if (strm->zalloc == (alloc_func)0) { #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zalloc = zcalloc; strm->opaque = (voidpf)0; #endif } if (strm->zfree == (free_func)0) #ifdef Z_SOLO return Z_STREAM_ERROR; #else strm->zfree = zcfree; #endif #ifdef FASTEST if (level != 0) level = 1; #else if (level == Z_DEFAULT_COMPRESSION) level = 6; #endif if (windowBits < 0) { /* suppress zlib wrapper */ wrap = 0; windowBits = -windowBits; } #ifdef GZIP else if (windowBits > 15) { wrap = 2; /* write gzip wrapper instead */ windowBits -= 16; } #endif if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED || windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED || (windowBits == 8 && wrap != 1)) { return Z_STREAM_ERROR; } if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */ s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state)); if (s == Z_NULL) return Z_MEM_ERROR; strm->state = (struct internal_state FAR *)s; s->strm = strm; s->status = INIT_STATE; /* to pass state test in deflateReset() */ s->wrap = wrap; s->gzhead = Z_NULL; s->w_bits = (uInt)windowBits; s->w_size = 1 << s->w_bits; s->w_mask = s->w_size - 1; s->hash_bits = (uInt)memLevel + 7; s->hash_size = 1 << s->hash_bits; s->hash_mask = s->hash_size - 1; s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH); s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte)); s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos)); s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos)); s->high_water = 0; /* nothing written to s->window yet */ s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2); s->pending_buf = (uchf *) overlay; s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L); if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL || s->pending_buf == Z_NULL) { s->status = FINISH_STATE; strm->msg = ERR_MSG(Z_MEM_ERROR); deflateEnd (strm); return Z_MEM_ERROR; } s->d_buf = overlay + s->lit_bufsize/sizeof(ush); s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize; s->level = level; s->strategy = strategy; s->method = (Byte)method; return deflateReset(strm); } /* ========================================================================= * Check for a valid deflate stream state. Return 0 if ok, 1 if not. */ local int deflateStateCheck (strm) z_streamp strm; { deflate_state *s; if (strm == Z_NULL || strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) return 1; s = strm->state; if (s == Z_NULL || s->strm != strm || (s->status != INIT_STATE && #ifdef GZIP s->status != GZIP_STATE && #endif s->status != EXTRA_STATE && s->status != NAME_STATE && s->status != COMMENT_STATE && s->status != HCRC_STATE && s->status != BUSY_STATE && s->status != FINISH_STATE)) return 1; return 0; } /* ========================================================================= */ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength) z_streamp strm; const Bytef *dictionary; uInt dictLength; { deflate_state *s; uInt str, n; int wrap; unsigned avail; z_const unsigned char *next; if (deflateStateCheck(strm) || dictionary == Z_NULL) return Z_STREAM_ERROR; s = strm->state; wrap = s->wrap; if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead) return Z_STREAM_ERROR; /* when using zlib wrappers, compute Adler-32 for provided dictionary */ if (wrap == 1) strm->adler = adler32(strm->adler, dictionary, dictLength); s->wrap = 0; /* avoid computing Adler-32 in read_buf */ /* if dictionary would fill window, just replace the history */ if (dictLength >= s->w_size) { if (wrap == 0) { /* already empty otherwise */ CLEAR_HASH(s); s->strstart = 0; s->block_start = 0L; s->insert = 0; } dictionary += dictLength - s->w_size; /* use the tail */ dictLength = s->w_size; } /* insert dictionary into window and hash */ avail = strm->avail_in; next = strm->next_in; strm->avail_in = dictLength; strm->next_in = (z_const Bytef *)dictionary; fill_window(s); while (s->lookahead >= MIN_MATCH) { str = s->strstart; n = s->lookahead - (MIN_MATCH-1); do { UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); #ifndef FASTEST s->prev[str & s->w_mask] = s->head[s->ins_h]; #endif s->head[s->ins_h] = (Pos)str; str++; } while (--n); s->strstart = str; s->lookahead = MIN_MATCH-1; fill_window(s); } s->strstart += s->lookahead; s->block_start = (long)s->strstart; s->insert = s->lookahead; s->lookahead = 0; s->match_length = s->prev_length = MIN_MATCH-1; s->match_available = 0; strm->next_in = next; strm->avail_in = avail; s->wrap = wrap; return Z_OK; } /* ========================================================================= */ int ZEXPORT deflateGetDictionary (strm, dictionary, dictLength) z_streamp strm; Bytef *dictionary; uInt *dictLength; { deflate_state *s; uInt len; if (deflateStateCheck(strm)) return Z_STREAM_ERROR; s = strm->state; len = s->strstart + s->lookahead; if (len > s->w_size) len = s->w_size; if (dictionary != Z_NULL && len) zmemcpy(dictionary, s->window + s->strstart + s->lookahead - len, len); if (dictLength != Z_NULL) *dictLength = len; return Z_OK; } /* ========================================================================= */ int ZEXPORT deflateResetKeep (strm) z_streamp strm; { deflate_state *s; if (deflateStateCheck(strm)) { return Z_STREAM_ERROR; } strm->total_in = strm->total_out = 0; strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */ strm->data_type = Z_UNKNOWN; s = (deflate_state *)strm->state; s->pending = 0; s->pending_out = s->pending_buf; if (s->wrap < 0) { s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */ } s->status = #ifdef GZIP s->wrap == 2 ? GZIP_STATE : #endif s->wrap ? INIT_STATE : BUSY_STATE; strm->adler = #ifdef GZIP s->wrap == 2 ? crc32(0L, Z_NULL, 0) : #endif adler32(0L, Z_NULL, 0); s->last_flush = Z_NO_FLUSH; _tr_init(s); return Z_OK; } /* ========================================================================= */ int ZEXPORT deflateReset (strm) z_streamp strm; { int ret; ret = deflateResetKeep(strm); if (ret == Z_OK) lm_init(strm->state); return ret; } /* ========================================================================= */ int ZEXPORT deflateSetHeader (strm, head) z_streamp strm; gz_headerp head; { if (deflateStateCheck(strm) || strm->state->wrap != 2) return Z_STREAM_ERROR; strm->state->gzhead = head; return Z_OK; } /* ========================================================================= */ int ZEXPORT deflatePending (strm, pending, bits) unsigned *pending; int *bits; z_streamp strm; { if (deflateStateCheck(strm)) return Z_STREAM_ERROR; if (pending != Z_NULL) *pending = strm->state->pending; if (bits != Z_NULL) *bits = strm->state->bi_valid; return Z_OK; } /* ========================================================================= */ int ZEXPORT deflatePrime (strm, bits, value) z_streamp strm; int bits; int value; { deflate_state *s; int put; if (deflateStateCheck(strm)) return Z_STREAM_ERROR; s = strm->state; if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3)) return Z_BUF_ERROR; do { put = Buf_size - s->bi_valid; if (put > bits) put = bits; s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid); s->bi_valid += put; _tr_flush_bits(s); value >>= put; bits -= put; } while (bits); return Z_OK; } /* ========================================================================= */ int ZEXPORT deflateParams(strm, level, strategy) z_streamp strm; int level; int strategy; { deflate_state *s; compress_func func; if (deflateStateCheck(strm)) return Z_STREAM_ERROR; s = strm->state; #ifdef FASTEST if (level != 0) level = 1; #else if (level == Z_DEFAULT_COMPRESSION) level = 6; #endif if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) { return Z_STREAM_ERROR; } func = configuration_table[s->level].func; if ((strategy != s->strategy || func != configuration_table[level].func) && s->high_water) { /* Flush the last buffer: */ int err = deflate(strm, Z_BLOCK); if (err == Z_STREAM_ERROR) return err; if (strm->avail_out == 0) return Z_BUF_ERROR; } if (s->level != level) { if (s->level == 0 && s->matches != 0) { if (s->matches == 1) slide_hash(s); else CLEAR_HASH(s); s->matches = 0; } s->level = level; s->max_lazy_match = configuration_table[level].max_lazy; s->good_match = configuration_table[level].good_length; s->nice_match = configuration_table[level].nice_length; s->max_chain_length = configuration_table[level].max_chain; } s->strategy = strategy; return Z_OK; } /* ========================================================================= */ int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain) z_streamp strm; int good_length; int max_lazy; int nice_length; int max_chain; { deflate_state *s; if (deflateStateCheck(strm)) return Z_STREAM_ERROR; s = strm->state; s->good_match = (uInt)good_length; s->max_lazy_match = (uInt)max_lazy; s->nice_match = nice_length; s->max_chain_length = (uInt)max_chain; return Z_OK; } /* ========================================================================= * For the default windowBits of 15 and memLevel of 8, this function returns * a close to exact, as well as small, upper bound on the compressed size. * They are coded as constants here for a reason--if the #define's are * changed, then this function needs to be changed as well. The return * value for 15 and 8 only works for those exact settings. * * For any setting other than those defaults for windowBits and memLevel, * the value returned is a conservative worst case for the maximum expansion * resulting from using fixed blocks instead of stored blocks, which deflate * can emit on compressed data for some combinations of the parameters. * * This function could be more sophisticated to provide closer upper bounds for * every combination of windowBits and memLevel. But even the conservative * upper bound of about 14% expansion does not seem onerous for output buffer * allocation. */ uLong ZEXPORT deflateBound(strm, sourceLen) z_streamp strm; uLong sourceLen; { deflate_state *s; uLong complen, wraplen; /* conservative upper bound for compressed data */ complen = sourceLen + ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5; /* if can't get parameters, return conservative bound plus zlib wrapper */ if (deflateStateCheck(strm)) return complen + 6; /* compute wrapper length */ s = strm->state; switch (s->wrap) { case 0: /* raw deflate */ wraplen = 0; break; case 1: /* zlib wrapper */ wraplen = 6 + (s->strstart ? 4 : 0); break; #ifdef GZIP case 2: /* gzip wrapper */ wraplen = 18; if (s->gzhead != Z_NULL) { /* user-supplied gzip header */ Bytef *str; if (s->gzhead->extra != Z_NULL) wraplen += 2 + s->gzhead->extra_len; str = s->gzhead->name; if (str != Z_NULL) do { wraplen++; } while (*str++); str = s->gzhead->comment; if (str != Z_NULL) do { wraplen++; } while (*str++); if (s->gzhead->hcrc) wraplen += 2; } break; #endif default: /* for compiler happiness */ wraplen = 6; } /* if not default parameters, return conservative bound */ if (s->w_bits != 15 || s->hash_bits != 8 + 7) return complen + wraplen; /* default settings: return tight bound for that case */ return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + (sourceLen >> 25) + 13 - 6 + wraplen; } /* ========================================================================= * Put a short in the pending buffer. The 16-bit value is put in MSB order. * IN assertion: the stream state is correct and there is enough room in * pending_buf. */ local void putShortMSB (s, b) deflate_state *s; uInt b; { put_byte(s, (Byte)(b >> 8)); put_byte(s, (Byte)(b & 0xff)); } /* ========================================================================= * Flush as much pending output as possible. All deflate() output, except for * some deflate_stored() output, goes through this function so some * applications may wish to modify it to avoid allocating a large * strm->next_out buffer and copying into it. (See also read_buf()). */ local void flush_pending(strm) z_streamp strm; { unsigned len; deflate_state *s = strm->state; _tr_flush_bits(s); len = s->pending; if (len > strm->avail_out) len = strm->avail_out; if (len == 0) return; zmemcpy(strm->next_out, s->pending_out, len); strm->next_out += len; s->pending_out += len; strm->total_out += len; strm->avail_out -= len; s->pending -= len; if (s->pending == 0) { s->pending_out = s->pending_buf; } } /* =========================================================================== * Update the header CRC with the bytes s->pending_buf[beg..s->pending - 1]. */ #define HCRC_UPDATE(beg) \ do { \ if (s->gzhead->hcrc && s->pending > (beg)) \ strm->adler = crc32(strm->adler, s->pending_buf + (beg), \ s->pending - (beg)); \ } while (0) /* ========================================================================= */ int ZEXPORT deflate (strm, flush) z_streamp strm; int flush; { int old_flush; /* value of flush param for previous deflate call */ deflate_state *s; if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) { return Z_STREAM_ERROR; } s = strm->state; if (strm->next_out == Z_NULL || (strm->avail_in != 0 && strm->next_in == Z_NULL) || (s->status == FINISH_STATE && flush != Z_FINISH)) { ERR_RETURN(strm, Z_STREAM_ERROR); } if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR); old_flush = s->last_flush; s->last_flush = flush; /* Flush as much pending output as possible */ if (s->pending != 0) { flush_pending(strm); if (strm->avail_out == 0) { /* Since avail_out is 0, deflate will be called again with * more output space, but possibly with both pending and * avail_in equal to zero. There won't be anything to do, * but this is not an error situation so make sure we * return OK instead of BUF_ERROR at next call of deflate: */ s->last_flush = -1; return Z_OK; } /* Make sure there is something to do and avoid duplicate consecutive * flushes. For repeated and useless calls with Z_FINISH, we keep * returning Z_STREAM_END instead of Z_BUF_ERROR. */ } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) && flush != Z_FINISH) { ERR_RETURN(strm, Z_BUF_ERROR); } /* User must not provide more input after the first FINISH: */ if (s->status == FINISH_STATE && strm->avail_in != 0) { ERR_RETURN(strm, Z_BUF_ERROR); } /* Write the header */ if (s->status == INIT_STATE) { /* zlib header */ uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8; uInt level_flags; if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2) level_flags = 0; else if (s->level < 6) level_flags = 1; else if (s->level == 6) level_flags = 2; else level_flags = 3; header |= (level_flags << 6); if (s->strstart != 0) header |= PRESET_DICT; header += 31 - (header % 31); putShortMSB(s, header); /* Save the adler32 of the preset dictionary: */ if (s->strstart != 0) { putShortMSB(s, (uInt)(strm->adler >> 16)); putShortMSB(s, (uInt)(strm->adler & 0xffff)); } strm->adler = adler32(0L, Z_NULL, 0); s->status = BUSY_STATE; /* Compression must start with an empty pending buffer */ flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } } #ifdef GZIP if (s->status == GZIP_STATE) { /* gzip header */ strm->adler = crc32(0L, Z_NULL, 0); put_byte(s, 31); put_byte(s, 139); put_byte(s, 8); if (s->gzhead == Z_NULL) { put_byte(s, 0); put_byte(s, 0); put_byte(s, 0); put_byte(s, 0); put_byte(s, 0); put_byte(s, s->level == 9 ? 2 : (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? 4 : 0)); put_byte(s, OS_CODE); s->status = BUSY_STATE; /* Compression must start with an empty pending buffer */ flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } } else { put_byte(s, (s->gzhead->text ? 1 : 0) + (s->gzhead->hcrc ? 2 : 0) + (s->gzhead->extra == Z_NULL ? 0 : 4) + (s->gzhead->name == Z_NULL ? 0 : 8) + (s->gzhead->comment == Z_NULL ? 0 : 16) ); put_byte(s, (Byte)(s->gzhead->time & 0xff)); put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff)); put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff)); put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff)); put_byte(s, s->level == 9 ? 2 : (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? 4 : 0)); put_byte(s, s->gzhead->os & 0xff); if (s->gzhead->extra != Z_NULL) { put_byte(s, s->gzhead->extra_len & 0xff); put_byte(s, (s->gzhead->extra_len >> 8) & 0xff); } if (s->gzhead->hcrc) strm->adler = crc32(strm->adler, s->pending_buf, s->pending); s->gzindex = 0; s->status = EXTRA_STATE; } } if (s->status == EXTRA_STATE) { if (s->gzhead->extra != Z_NULL) { ulg beg = s->pending; /* start of bytes to update crc */ uInt left = (s->gzhead->extra_len & 0xffff) - s->gzindex; while (s->pending + left > s->pending_buf_size) { uInt copy = s->pending_buf_size - s->pending; zmemcpy(s->pending_buf + s->pending, s->gzhead->extra + s->gzindex, copy); s->pending = s->pending_buf_size; HCRC_UPDATE(beg); s->gzindex += copy; flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } beg = 0; left -= copy; } zmemcpy(s->pending_buf + s->pending, s->gzhead->extra + s->gzindex, left); s->pending += left; HCRC_UPDATE(beg); s->gzindex = 0; } s->status = NAME_STATE; } if (s->status == NAME_STATE) { if (s->gzhead->name != Z_NULL) { ulg beg = s->pending; /* start of bytes to update crc */ int val; do { if (s->pending == s->pending_buf_size) { HCRC_UPDATE(beg); flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } beg = 0; } val = s->gzhead->name[s->gzindex++]; put_byte(s, val); } while (val != 0); HCRC_UPDATE(beg); s->gzindex = 0; } s->status = COMMENT_STATE; } if (s->status == COMMENT_STATE) { if (s->gzhead->comment != Z_NULL) { ulg beg = s->pending; /* start of bytes to update crc */ int val; do { if (s->pending == s->pending_buf_size) { HCRC_UPDATE(beg); flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } beg = 0; } val = s->gzhead->comment[s->gzindex++]; put_byte(s, val); } while (val != 0); HCRC_UPDATE(beg); } s->status = HCRC_STATE; } if (s->status == HCRC_STATE) { if (s->gzhead->hcrc) { if (s->pending + 2 > s->pending_buf_size) { flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } } put_byte(s, (Byte)(strm->adler & 0xff)); put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); strm->adler = crc32(0L, Z_NULL, 0); } s->status = BUSY_STATE; /* Compression must start with an empty pending buffer */ flush_pending(strm); if (s->pending != 0) { s->last_flush = -1; return Z_OK; } } #endif /* Start a new block or continue the current one. */ if (strm->avail_in != 0 || s->lookahead != 0 || (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) { block_state bstate; bstate = s->level == 0 ? deflate_stored(s, flush) : s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) : s->strategy == Z_RLE ? deflate_rle(s, flush) : (*(configuration_table[s->level].func))(s, flush); if (bstate == finish_started || bstate == finish_done) { s->status = FINISH_STATE; } if (bstate == need_more || bstate == finish_started) { if (strm->avail_out == 0) { s->last_flush = -1; /* avoid BUF_ERROR next call, see above */ } return Z_OK; /* If flush != Z_NO_FLUSH && avail_out == 0, the next call * of deflate should use the same flush parameter to make sure * that the flush is complete. So we don't have to output an * empty block here, this will be done at next call. This also * ensures that for a very small output buffer, we emit at most * one empty block. */ } if (bstate == block_done) { if (flush == Z_PARTIAL_FLUSH) { _tr_align(s); } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ _tr_stored_block(s, (char*)0, 0L, 0); /* For a full flush, this empty block will be recognized * as a special marker by inflate_sync(). */ if (flush == Z_FULL_FLUSH) { CLEAR_HASH(s); /* forget history */ if (s->lookahead == 0) { s->strstart = 0; s->block_start = 0L; s->insert = 0; } } } flush_pending(strm); if (strm->avail_out == 0) { s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */ return Z_OK; } } } if (flush != Z_FINISH) return Z_OK; if (s->wrap <= 0) return Z_STREAM_END; /* Write the trailer */ #ifdef GZIP if (s->wrap == 2) { put_byte(s, (Byte)(strm->adler & 0xff)); put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); put_byte(s, (Byte)((strm->adler >> 16) & 0xff)); put_byte(s, (Byte)((strm->adler >> 24) & 0xff)); put_byte(s, (Byte)(strm->total_in & 0xff)); put_byte(s, (Byte)((strm->total_in >> 8) & 0xff)); put_byte(s, (Byte)((strm->total_in >> 16) & 0xff)); put_byte(s, (Byte)((strm->total_in >> 24) & 0xff)); } else #endif { putShortMSB(s, (uInt)(strm->adler >> 16)); putShortMSB(s, (uInt)(strm->adler & 0xffff)); } flush_pending(strm); /* If avail_out is zero, the application will call deflate again * to flush the rest. */ if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */ return s->pending != 0 ? Z_OK : Z_STREAM_END; } /* ========================================================================= */ int ZEXPORT deflateEnd (strm) z_streamp strm; { int status; if (deflateStateCheck(strm)) return Z_STREAM_ERROR; status = strm->state->status; /* Deallocate in reverse order of allocations: */ TRY_FREE(strm, strm->state->pending_buf); TRY_FREE(strm, strm->state->head); TRY_FREE(strm, strm->state->prev); TRY_FREE(strm, strm->state->window); ZFREE(strm, strm->state); strm->state = Z_NULL; return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK; } /* ========================================================================= * Copy the source state to the destination state. * To simplify the source, this is not supported for 16-bit MSDOS (which * doesn't have enough memory anyway to duplicate compression states). */ int ZEXPORT deflateCopy (dest, source) z_streamp dest; z_streamp source; { #ifdef MAXSEG_64K return Z_STREAM_ERROR; #else deflate_state *ds; deflate_state *ss; ushf *overlay; if (deflateStateCheck(source) || dest == Z_NULL) { return Z_STREAM_ERROR; } ss = source->state; zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream)); ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state)); if (ds == Z_NULL) return Z_MEM_ERROR; dest->state = (struct internal_state FAR *) ds; zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state)); ds->strm = dest; ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte)); ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos)); ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos)); overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2); ds->pending_buf = (uchf *) overlay; if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL || ds->pending_buf == Z_NULL) { deflateEnd (dest); return Z_MEM_ERROR; } /* following zmemcpy do not work for 16-bit MSDOS */ zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte)); zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos)); zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos)); zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size); ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf); ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush); ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize; ds->l_desc.dyn_tree = ds->dyn_ltree; ds->d_desc.dyn_tree = ds->dyn_dtree; ds->bl_desc.dyn_tree = ds->bl_tree; return Z_OK; #endif /* MAXSEG_64K */ } /* =========================================================================== * Read a new buffer from the current input stream, update the adler32 * and total number of bytes read. All deflate() input goes through * this function so some applications may wish to modify it to avoid * allocating a large strm->next_in buffer and copying from it. * (See also flush_pending()). */ local unsigned read_buf(strm, buf, size) z_streamp strm; Bytef *buf; unsigned size; { unsigned len = strm->avail_in; if (len > size) len = size; if (len == 0) return 0; strm->avail_in -= len; zmemcpy(buf, strm->next_in, len); if (strm->state->wrap == 1) { strm->adler = adler32(strm->adler, buf, len); } #ifdef GZIP else if (strm->state->wrap == 2) { strm->adler = crc32(strm->adler, buf, len); } #endif strm->next_in += len; strm->total_in += len; return len; } /* =========================================================================== * Initialize the "longest match" routines for a new zlib stream */ local void lm_init (s) deflate_state *s; { s->window_size = (ulg)2L*s->w_size; CLEAR_HASH(s); /* Set the default configuration parameters: */ s->max_lazy_match = configuration_table[s->level].max_lazy; s->good_match = configuration_table[s->level].good_length; s->nice_match = configuration_table[s->level].nice_length; s->max_chain_length = configuration_table[s->level].max_chain; s->strstart = 0; s->block_start = 0L; s->lookahead = 0; s->insert = 0; s->match_length = s->prev_length = MIN_MATCH-1; s->match_available = 0; s->ins_h = 0; #ifndef FASTEST #ifdef ASMV match_init(); /* initialize the asm code */ #endif #endif } #ifndef FASTEST /* =========================================================================== * Set match_start to the longest match starting at the given string and * return its length. Matches shorter or equal to prev_length are discarded, * in which case the result is equal to prev_length and match_start is * garbage. * IN assertions: cur_match is the head of the hash chain for the current * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 * OUT assertion: the match length is not greater than s->lookahead. */ #ifndef ASMV /* For 80x86 and 680x0, an optimized version will be provided in match.asm or * match.S. The code will be functionally equivalent. */ local uInt longest_match(s, cur_match) deflate_state *s; IPos cur_match; /* current match */ { unsigned chain_length = s->max_chain_length;/* max hash chain length */ register Bytef *scan = s->window + s->strstart; /* current string */ register Bytef *match; /* matched string */ register int len; /* length of current match */ int best_len = (int)s->prev_length; /* best match length so far */ int nice_match = s->nice_match; /* stop if match long enough */ IPos limit = s->strstart > (IPos)MAX_DIST(s) ? s->strstart - (IPos)MAX_DIST(s) : NIL; /* Stop when cur_match becomes <= limit. To simplify the code, * we prevent matches with the string of window index 0. */ Posf *prev = s->prev; uInt wmask = s->w_mask; #ifdef UNALIGNED_OK /* Compare two bytes at a time. Note: this is not always beneficial. * Try with and without -DUNALIGNED_OK to check. */ register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1; register ush scan_start = *(ushf*)scan; register ush scan_end = *(ushf*)(scan+best_len-1); #else register Bytef *strend = s->window + s->strstart + MAX_MATCH; register Byte scan_end1 = scan[best_len-1]; register Byte scan_end = scan[best_len]; #endif /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. * It is easy to get rid of this optimization if necessary. */ Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); /* Do not waste too much time if we already have a good match: */ if (s->prev_length >= s->good_match) { chain_length >>= 2; } /* Do not look for matches beyond the end of the input. This is necessary * to make deflate deterministic. */ if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead; Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); do { Assert(cur_match < s->strstart, "no future"); match = s->window + cur_match; /* Skip to next match if the match length cannot increase * or if the match length is less than 2. Note that the checks below * for insufficient lookahead only occur occasionally for performance * reasons. Therefore uninitialized memory will be accessed, and * conditional jumps will be made that depend on those values. * However the length of the match is limited to the lookahead, so * the output of deflate is not affected by the uninitialized values. */ #if (defined(UNALIGNED_OK) && MAX_MATCH == 258) /* This code assumes sizeof(unsigned short) == 2. Do not use * UNALIGNED_OK if your compiler uses a different size. */ if (*(ushf*)(match+best_len-1) != scan_end || *(ushf*)match != scan_start) continue; /* It is not necessary to compare scan[2] and match[2] since they are * always equal when the other bytes match, given that the hash keys * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at * strstart+3, +5, ... up to strstart+257. We check for insufficient * lookahead only every 4th comparison; the 128th check will be made * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is * necessary to put more guard bytes at the end of the window, or * to check more often for insufficient lookahead. */ Assert(scan[2] == match[2], "scan[2]?"); scan++, match++; do { } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) && *(ushf*)(scan+=2) == *(ushf*)(match+=2) && *(ushf*)(scan+=2) == *(ushf*)(match+=2) && *(ushf*)(scan+=2) == *(ushf*)(match+=2) && scan < strend); /* The funny "do {}" generates better code on most compilers */ /* Here, scan <= window+strstart+257 */ Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); if (*scan == *match) scan++; len = (MAX_MATCH - 1) - (int)(strend-scan); scan = strend - (MAX_MATCH-1); #else /* UNALIGNED_OK */ if (match[best_len] != scan_end || match[best_len-1] != scan_end1 || *match != *scan || *++match != scan[1]) continue; /* The check at best_len-1 can be removed because it will be made * again later. (This heuristic is not always a win.) * It is not necessary to compare scan[2] and match[2] since they * are always equal when the other bytes match, given that * the hash keys are equal and that HASH_BITS >= 8. */ scan += 2, match++; Assert(*scan == *match, "match[2]?"); /* We check for insufficient lookahead only every 8th comparison; * the 256th check will be made at strstart+258. */ do { } while (*++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && scan < strend); Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); len = MAX_MATCH - (int)(strend - scan); scan = strend - MAX_MATCH; #endif /* UNALIGNED_OK */ if (len > best_len) { s->match_start = cur_match; best_len = len; if (len >= nice_match) break; #ifdef UNALIGNED_OK scan_end = *(ushf*)(scan+best_len-1); #else scan_end1 = scan[best_len-1]; scan_end = scan[best_len]; #endif } } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length != 0); if ((uInt)best_len <= s->lookahead) return (uInt)best_len; return s->lookahead; } #endif /* ASMV */ #else /* FASTEST */ /* --------------------------------------------------------------------------- * Optimized version for FASTEST only */ local uInt longest_match(s, cur_match) deflate_state *s; IPos cur_match; /* current match */ { register Bytef *scan = s->window + s->strstart; /* current string */ register Bytef *match; /* matched string */ register int len; /* length of current match */ register Bytef *strend = s->window + s->strstart + MAX_MATCH; /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. * It is easy to get rid of this optimization if necessary. */ Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); Assert(cur_match < s->strstart, "no future"); match = s->window + cur_match; /* Return failure if the match length is less than 2: */ if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1; /* The check at best_len-1 can be removed because it will be made * again later. (This heuristic is not always a win.) * It is not necessary to compare scan[2] and match[2] since they * are always equal when the other bytes match, given that * the hash keys are equal and that HASH_BITS >= 8. */ scan += 2, match += 2; Assert(*scan == *match, "match[2]?"); /* We check for insufficient lookahead only every 8th comparison; * the 256th check will be made at strstart+258. */ do { } while (*++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && *++scan == *++match && scan < strend); Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); len = MAX_MATCH - (int)(strend - scan); if (len < MIN_MATCH) return MIN_MATCH - 1; s->match_start = cur_match; return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead; } #endif /* FASTEST */ #ifdef ZLIB_DEBUG #define EQUAL 0 /* result of memcmp for equal strings */ /* =========================================================================== * Check that the match at match_start is indeed a match. */ local void check_match(s, start, match, length) deflate_state *s; IPos start, match; int length; { /* check that the match is indeed a match */ if (zmemcmp(s->window + match, s->window + start, length) != EQUAL) { fprintf(stderr, " start %u, match %u, length %d\n", start, match, length); do { fprintf(stderr, "%c%c", s->window[match++], s->window[start++]); } while (--length != 0); z_error("invalid match"); } if (z_verbose > 1) { fprintf(stderr,"\\[%d,%d]", start-match, length); do { putc(s->window[start++], stderr); } while (--length != 0); } } #else # define check_match(s, start, match, length) #endif /* ZLIB_DEBUG */ /* =========================================================================== * Fill the window when the lookahead becomes insufficient. * Updates strstart and lookahead. * * IN assertion: lookahead < MIN_LOOKAHEAD * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD * At least one byte has been read, or avail_in == 0; reads are * performed for at least two bytes (required for the zip translate_eol * option -- not supported here). */ local void fill_window(s) deflate_state *s; { unsigned n; unsigned more; /* Amount of free space at the end of the window. */ uInt wsize = s->w_size; Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); do { more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart); /* Deal with !@#$% 64K limit: */ if (sizeof(int) <= 2) { if (more == 0 && s->strstart == 0 && s->lookahead == 0) { more = wsize; } else if (more == (unsigned)(-1)) { /* Very unlikely, but possible on 16 bit machine if * strstart == 0 && lookahead == 1 (input done a byte at time) */ more--; } } /* If the window is almost full and there is insufficient lookahead, * move the upper half to the lower one to make room in the upper half. */ if (s->strstart >= wsize+MAX_DIST(s)) { zmemcpy(s->window, s->window+wsize, (unsigned)wsize - more); s->match_start -= wsize; s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ s->block_start -= (long) wsize; slide_hash(s); more += wsize; } if (s->strm->avail_in == 0) break; /* If there was no sliding: * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && * more == window_size - lookahead - strstart * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) * => more >= window_size - 2*WSIZE + 2 * In the BIG_MEM or MMAP case (not yet supported), * window_size == input_size + MIN_LOOKAHEAD && * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. * Otherwise, window_size == 2*WSIZE so more >= 2. * If there was sliding, more >= WSIZE. So in all cases, more >= 2. */ Assert(more >= 2, "more < 2"); n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more); s->lookahead += n; /* Initialize the hash value now that we have some input: */ if (s->lookahead + s->insert >= MIN_MATCH) { uInt str = s->strstart - s->insert; s->ins_h = s->window[str]; UPDATE_HASH(s, s->ins_h, s->window[str + 1]); #if MIN_MATCH != 3 Call UPDATE_HASH() MIN_MATCH-3 more times #endif while (s->insert) { UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); #ifndef FASTEST s->prev[str & s->w_mask] = s->head[s->ins_h]; #endif s->head[s->ins_h] = (Pos)str; str++; s->insert--; if (s->lookahead + s->insert < MIN_MATCH) break; } } /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, * but this is not important since only literal bytes will be emitted. */ } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); /* If the WIN_INIT bytes after the end of the current data have never been * written, then zero those bytes in order to avoid memory check reports of * the use of uninitialized (or uninitialised as Julian writes) bytes by * the longest match routines. Update the high water mark for the next * time through here. WIN_INIT is set to MAX_MATCH since the longest match * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. */ if (s->high_water < s->window_size) { ulg curr = s->strstart + (ulg)(s->lookahead); ulg init; if (s->high_water < curr) { /* Previous high water mark below current data -- zero WIN_INIT * bytes or up to end of window, whichever is less. */ init = s->window_size - curr; if (init > WIN_INIT) init = WIN_INIT; zmemzero(s->window + curr, (unsigned)init); s->high_water = curr + init; } else if (s->high_water < (ulg)curr + WIN_INIT) { /* High water mark at or above current data, but below current data * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up * to end of window, whichever is less. */ init = (ulg)curr + WIN_INIT - s->high_water; if (init > s->window_size - s->high_water) init = s->window_size - s->high_water; zmemzero(s->window + s->high_water, (unsigned)init); s->high_water += init; } } Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, "not enough room for search"); } /* =========================================================================== * Flush the current block, with given end-of-file flag. * IN assertion: strstart is set to the end of the current match. */ #define FLUSH_BLOCK_ONLY(s, last) { \ _tr_flush_block(s, (s->block_start >= 0L ? \ (charf *)&s->window[(unsigned)s->block_start] : \ (charf *)Z_NULL), \ (ulg)((long)s->strstart - s->block_start), \ (last)); \ s->block_start = s->strstart; \ flush_pending(s->strm); \ Tracev((stderr,"[FLUSH]")); \ } /* Same but force premature exit if necessary. */ #define FLUSH_BLOCK(s, last) { \ FLUSH_BLOCK_ONLY(s, last); \ if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \ } /* Maximum stored block length in deflate format (not including header). */ #define MAX_STORED 65535 /* Minimum of a and b. */ #define MIN(a, b) ((a) > (b) ? (b) : (a)) /* =========================================================================== * Copy without compression as much as possible from the input stream, return * the current block state. * * In case deflateParams() is used to later switch to a non-zero compression * level, s->matches (otherwise unused when storing) keeps track of the number * of hash table slides to perform. If s->matches is 1, then one hash table * slide will be done when switching. If s->matches is 2, the maximum value * allowed here, then the hash table will be cleared, since two or more slides * is the same as a clear. * * deflate_stored() is written to minimize the number of times an input byte is * copied. It is most efficient with large input and output buffers, which * maximizes the opportunites to have a single copy from next_in to next_out. */ local block_state deflate_stored(s, flush) deflate_state *s; int flush; { /* Smallest worthy block size when not flushing or finishing. By default * this is 32K. This can be as small as 507 bytes for memLevel == 1. For * large input and output buffers, the stored block size will be larger. */ unsigned min_block = MIN(s->pending_buf_size - 5, s->w_size); /* Copy as many min_block or larger stored blocks directly to next_out as * possible. If flushing, copy the remaining available input to next_out as * stored blocks, if there is enough space. */ unsigned len, left, have, last = 0; unsigned used = s->strm->avail_in; do { /* Set len to the maximum size block that we can copy directly with the * available input data and output space. Set left to how much of that * would be copied from what's left in the window. */ len = MAX_STORED; /* maximum deflate stored block length */ have = (s->bi_valid + 42) >> 3; /* number of header bytes */ if (s->strm->avail_out < have) /* need room for header */ break; /* maximum stored block length that will fit in avail_out: */ have = s->strm->avail_out - have; left = s->strstart - s->block_start; /* bytes left in window */ if (len > (ulg)left + s->strm->avail_in) len = left + s->strm->avail_in; /* limit len to the input */ if (len > have) len = have; /* limit len to the output */ /* If the stored block would be less than min_block in length, or if * unable to copy all of the available input when flushing, then try * copying to the window and the pending buffer instead. Also don't * write an empty block when flushing -- deflate() does that. */ if (len < min_block && ((len == 0 && flush != Z_FINISH) || flush == Z_NO_FLUSH || len != left + s->strm->avail_in)) break; /* Make a dummy stored block in pending to get the header bytes, * including any pending bits. This also updates the debugging counts. */ last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0; _tr_stored_block(s, (char *)0, 0L, last); /* Replace the lengths in the dummy stored block with len. */ s->pending_buf[s->pending - 4] = len; s->pending_buf[s->pending - 3] = len >> 8; s->pending_buf[s->pending - 2] = ~len; s->pending_buf[s->pending - 1] = ~len >> 8; /* Write the stored block header bytes. */ flush_pending(s->strm); #ifdef ZLIB_DEBUG /* Update debugging counts for the data about to be copied. */ s->compressed_len += len << 3; s->bits_sent += len << 3; #endif /* Copy uncompressed bytes from the window to next_out. */ if (left) { if (left > len) left = len; zmemcpy(s->strm->next_out, s->window + s->block_start, left); s->strm->next_out += left; s->strm->avail_out -= left; s->strm->total_out += left; s->block_start += left; len -= left; } /* Copy uncompressed bytes directly from next_in to next_out, updating * the check value. */ if (len) { read_buf(s->strm, s->strm->next_out, len); s->strm->next_out += len; s->strm->avail_out -= len; s->strm->total_out += len; } } while (last == 0); /* Update the sliding window with the last s->w_size bytes of the copied * data, or append all of the copied data to the existing window if less * than s->w_size bytes were copied. Also update the number of bytes to * insert in the hash tables, in the event that deflateParams() switches to * a non-zero compression level. */ used -= s->strm->avail_in; /* number of input bytes directly copied */ if (used) { /* If any input was used, then no unused input remains in the window, * therefore s->block_start == s->strstart. */ if (used >= s->w_size) { /* supplant the previous history */ s->matches = 2; /* clear hash */ zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size); s->strstart = s->w_size; } else { if (s->window_size - s->strstart <= used) { /* Slide the window down. */ s->strstart -= s->w_size; zmemcpy(s->window, s->window + s->w_size, s->strstart); if (s->matches < 2) s->matches++; /* add a pending slide_hash() */ } zmemcpy(s->window + s->strstart, s->strm->next_in - used, used); s->strstart += used; } s->block_start = s->strstart; s->insert += MIN(used, s->w_size - s->insert); } if (s->high_water < s->strstart) s->high_water = s->strstart; /* If the last block was written to next_out, then done. */ if (last) return finish_done; /* If flushing and all input has been consumed, then done. */ if (flush != Z_NO_FLUSH && flush != Z_FINISH && s->strm->avail_in == 0 && (long)s->strstart == s->block_start) return block_done; /* Fill the window with any remaining input. */ have = s->window_size - s->strstart - 1; if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) { /* Slide the window down. */ s->block_start -= s->w_size; s->strstart -= s->w_size; zmemcpy(s->window, s->window + s->w_size, s->strstart); if (s->matches < 2) s->matches++; /* add a pending slide_hash() */ have += s->w_size; /* more space now */ } if (have > s->strm->avail_in) have = s->strm->avail_in; if (have) { read_buf(s->strm, s->window + s->strstart, have); s->strstart += have; } if (s->high_water < s->strstart) s->high_water = s->strstart; /* There was not enough avail_out to write a complete worthy or flushed * stored block to next_out. Write a stored block to pending instead, if we * have enough input for a worthy block, or if flushing and there is enough * room for the remaining input as a stored block in the pending buffer. */ have = (s->bi_valid + 42) >> 3; /* number of header bytes */ /* maximum stored block length that will fit in pending: */ have = MIN(s->pending_buf_size - have, MAX_STORED); min_block = MIN(have, s->w_size); left = s->strstart - s->block_start; if (left >= min_block || ((left || flush == Z_FINISH) && flush != Z_NO_FLUSH && s->strm->avail_in == 0 && left <= have)) { len = MIN(left, have); last = flush == Z_FINISH && s->strm->avail_in == 0 && len == left ? 1 : 0; _tr_stored_block(s, (charf *)s->window + s->block_start, len, last); s->block_start += len; flush_pending(s->strm); } /* We've done all we can with the available input and output. */ return last ? finish_started : need_more; } /* =========================================================================== * Compress as much as possible from the input stream, return the current * block state. * This function does not perform lazy evaluation of matches and inserts * new strings in the dictionary only for unmatched strings or for short * matches. It is used only for the fast compression options. */ local block_state deflate_fast(s, flush) deflate_state *s; int flush; { IPos hash_head; /* head of the hash chain */ int bflush; /* set if current block must be flushed */ for (;;) { /* Make sure that we always have enough lookahead, except * at the end of the input file. We need MAX_MATCH bytes * for the next match, plus MIN_MATCH bytes to insert the * string following the next match. */ if (s->lookahead < MIN_LOOKAHEAD) { fill_window(s); if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { return need_more; } if (s->lookahead == 0) break; /* flush the current block */ } /* Insert the string window[strstart .. strstart+2] in the * dictionary, and set hash_head to the head of the hash chain: */ hash_head = NIL; if (s->lookahead >= MIN_MATCH) { INSERT_STRING(s, s->strstart, hash_head); } /* Find the longest match, discarding those <= prev_length. * At this point we have always match_length < MIN_MATCH */ if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) { /* To simplify the code, we prevent matches with the string * of window index 0 (in particular we have to avoid a match * of the string with itself at the start of the input file). */ s->match_length = longest_match (s, hash_head); /* longest_match() sets match_start */ } if (s->match_length >= MIN_MATCH) { check_match(s, s->strstart, s->match_start, s->match_length); _tr_tally_dist(s, s->strstart - s->match_start, s->match_length - MIN_MATCH, bflush); s->lookahead -= s->match_length; /* Insert new strings in the hash table only if the match length * is not too large. This saves time but degrades compression. */ #ifndef FASTEST if (s->match_length <= s->max_insert_length && s->lookahead >= MIN_MATCH) { s->match_length--; /* string at strstart already in table */ do { s->strstart++; INSERT_STRING(s, s->strstart, hash_head); /* strstart never exceeds WSIZE-MAX_MATCH, so there are * always MIN_MATCH bytes ahead. */ } while (--s->match_length != 0); s->strstart++; } else #endif { s->strstart += s->match_length; s->match_length = 0; s->ins_h = s->window[s->strstart]; UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]); #if MIN_MATCH != 3 Call UPDATE_HASH() MIN_MATCH-3 more times #endif /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not * matter since it will be recomputed at next deflate call. */ } } else { /* No match, output a literal byte */ Tracevv((stderr,"%c", s->window[s->strstart])); _tr_tally_lit (s, s->window[s->strstart], bflush); s->lookahead--; s->strstart++; } if (bflush) FLUSH_BLOCK(s, 0); } s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; if (flush == Z_FINISH) { FLUSH_BLOCK(s, 1); return finish_done; } if (s->last_lit) FLUSH_BLOCK(s, 0); return block_done; } #ifndef FASTEST /* =========================================================================== * Same as above, but achieves better compression. We use a lazy * evaluation for matches: a match is finally adopted only if there is * no better match at the next window position. */ local block_state deflate_slow(s, flush) deflate_state *s; int flush; { IPos hash_head; /* head of hash chain */ int bflush; /* set if current block must be flushed */ /* Process the input block. */ for (;;) { /* Make sure that we always have enough lookahead, except * at the end of the input file. We need MAX_MATCH bytes * for the next match, plus MIN_MATCH bytes to insert the * string following the next match. */ if (s->lookahead < MIN_LOOKAHEAD) { fill_window(s); if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { return need_more; } if (s->lookahead == 0) break; /* flush the current block */ } /* Insert the string window[strstart .. strstart+2] in the * dictionary, and set hash_head to the head of the hash chain: */ hash_head = NIL; if (s->lookahead >= MIN_MATCH) { INSERT_STRING(s, s->strstart, hash_head); } /* Find the longest match, discarding those <= prev_length. */ s->prev_length = s->match_length, s->prev_match = s->match_start; s->match_length = MIN_MATCH-1; if (hash_head != NIL && s->prev_length < s->max_lazy_match && s->strstart - hash_head <= MAX_DIST(s)) { /* To simplify the code, we prevent matches with the string * of window index 0 (in particular we have to avoid a match * of the string with itself at the start of the input file). */ s->match_length = longest_match (s, hash_head); /* longest_match() sets match_start */ if (s->match_length <= 5 && (s->strategy == Z_FILTERED #if TOO_FAR <= 32767 || (s->match_length == MIN_MATCH && s->strstart - s->match_start > TOO_FAR) #endif )) { /* If prev_match is also MIN_MATCH, match_start is garbage * but we will ignore the current match anyway. */ s->match_length = MIN_MATCH-1; } } /* If there was a match at the previous step and the current * match is not better, output the previous match: */ if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) { uInt max_insert = s->strstart + s->lookahead - MIN_MATCH; /* Do not insert strings in hash table beyond this. */ check_match(s, s->strstart-1, s->prev_match, s->prev_length); _tr_tally_dist(s, s->strstart -1 - s->prev_match, s->prev_length - MIN_MATCH, bflush); /* Insert in hash table all strings up to the end of the match. * strstart-1 and strstart are already inserted. If there is not * enough lookahead, the last two strings are not inserted in * the hash table. */ s->lookahead -= s->prev_length-1; s->prev_length -= 2; do { if (++s->strstart <= max_insert) { INSERT_STRING(s, s->strstart, hash_head); } } while (--s->prev_length != 0); s->match_available = 0; s->match_length = MIN_MATCH-1; s->strstart++; if (bflush) FLUSH_BLOCK(s, 0); } else if (s->match_available) { /* If there was no match at the previous position, output a * single literal. If there was a match but the current match * is longer, truncate the previous match to a single literal. */ Tracevv((stderr,"%c", s->window[s->strstart-1])); _tr_tally_lit(s, s->window[s->strstart-1], bflush); if (bflush) { FLUSH_BLOCK_ONLY(s, 0); } s->strstart++; s->lookahead--; if (s->strm->avail_out == 0) return need_more; } else { /* There is no previous match to compare with, wait for * the next step to decide. */ s->match_available = 1; s->strstart++; s->lookahead--; } } Assert (flush != Z_NO_FLUSH, "no flush?"); if (s->match_available) { Tracevv((stderr,"%c", s->window[s->strstart-1])); _tr_tally_lit(s, s->window[s->strstart-1], bflush); s->match_available = 0; } s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; if (flush == Z_FINISH) { FLUSH_BLOCK(s, 1); return finish_done; } if (s->last_lit) FLUSH_BLOCK(s, 0); return block_done; } #endif /* FASTEST */ /* =========================================================================== * For Z_RLE, simply look for runs of bytes, generate matches only of distance * one. Do not maintain a hash table. (It will be regenerated if this run of * deflate switches away from Z_RLE.) */ local block_state deflate_rle(s, flush) deflate_state *s; int flush; { int bflush; /* set if current block must be flushed */ uInt prev; /* byte at distance one to match */ Bytef *scan, *strend; /* scan goes up to strend for length of run */ for (;;) { /* Make sure that we always have enough lookahead, except * at the end of the input file. We need MAX_MATCH bytes * for the longest run, plus one for the unrolled loop. */ if (s->lookahead <= MAX_MATCH) { fill_window(s); if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) { return need_more; } if (s->lookahead == 0) break; /* flush the current block */ } /* See how many times the previous byte repeats */ s->match_length = 0; if (s->lookahead >= MIN_MATCH && s->strstart > 0) { scan = s->window + s->strstart - 1; prev = *scan; if (prev == *++scan && prev == *++scan && prev == *++scan) { strend = s->window + s->strstart + MAX_MATCH; do { } while (prev == *++scan && prev == *++scan && prev == *++scan && prev == *++scan && prev == *++scan && prev == *++scan && prev == *++scan && prev == *++scan && scan < strend); s->match_length = MAX_MATCH - (uInt)(strend - scan); if (s->match_length > s->lookahead) s->match_length = s->lookahead; } Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); } /* Emit match if have run of MIN_MATCH or longer, else emit literal */ if (s->match_length >= MIN_MATCH) { check_match(s, s->strstart, s->strstart - 1, s->match_length); _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush); s->lookahead -= s->match_length; s->strstart += s->match_length; s->match_length = 0; } else { /* No match, output a literal byte */ Tracevv((stderr,"%c", s->window[s->strstart])); _tr_tally_lit (s, s->window[s->strstart], bflush); s->lookahead--; s->strstart++; } if (bflush) FLUSH_BLOCK(s, 0); } s->insert = 0; if (flush == Z_FINISH) { FLUSH_BLOCK(s, 1); return finish_done; } if (s->last_lit) FLUSH_BLOCK(s, 0); return block_done; } /* =========================================================================== * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. * (It will be regenerated if this run of deflate switches away from Huffman.) */ local block_state deflate_huff(s, flush) deflate_state *s; int flush; { int bflush; /* set if current block must be flushed */ for (;;) { /* Make sure that we have a literal to write. */ if (s->lookahead == 0) { fill_window(s); if (s->lookahead == 0) { if (flush == Z_NO_FLUSH) return need_more; break; /* flush the current block */ } } /* Output a literal byte */ s->match_length = 0; Tracevv((stderr,"%c", s->window[s->strstart])); _tr_tally_lit (s, s->window[s->strstart], bflush); s->lookahead--; s->strstart++; if (bflush) FLUSH_BLOCK(s, 0); } s->insert = 0; if (flush == Z_FINISH) { FLUSH_BLOCK(s, 1); return finish_done; } if (s->last_lit) FLUSH_BLOCK(s, 0); return block_done; } zlib-1.2.11.dfsg/zlib.pc.in0000644000175000017500000000037611362525457015243 0ustar brooniebroonieprefix=@prefix@ exec_prefix=@exec_prefix@ libdir=@libdir@ sharedlibdir=@sharedlibdir@ includedir=@includedir@ Name: zlib Description: zlib compression library Version: @VERSION@ Requires: Libs: -L${libdir} -L${sharedlibdir} -lz Cflags: -I${includedir} zlib-1.2.11.dfsg/compress.c0000644000175000017500000000521313032130646015330 0ustar brooniebroonie/* compress.c -- compress a memory buffer * Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #define ZLIB_INTERNAL #include "zlib.h" /* =========================================================================== Compresses the source buffer into the destination buffer. The level parameter has the same meaning as in deflateInit. sourceLen is the byte length of the source buffer. Upon entry, destLen is the total size of the destination buffer, which must be at least 0.1% larger than sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer, Z_STREAM_ERROR if the level parameter is invalid. */ int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) Bytef *dest; uLongf *destLen; const Bytef *source; uLong sourceLen; int level; { z_stream stream; int err; const uInt max = (uInt)-1; uLong left; left = *destLen; *destLen = 0; stream.zalloc = (alloc_func)0; stream.zfree = (free_func)0; stream.opaque = (voidpf)0; err = deflateInit(&stream, level); if (err != Z_OK) return err; stream.next_out = dest; stream.avail_out = 0; stream.next_in = (z_const Bytef *)source; stream.avail_in = 0; do { if (stream.avail_out == 0) { stream.avail_out = left > (uLong)max ? max : (uInt)left; left -= stream.avail_out; } if (stream.avail_in == 0) { stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen; sourceLen -= stream.avail_in; } err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH); } while (err == Z_OK); *destLen = stream.total_out; deflateEnd(&stream); return err == Z_STREAM_END ? Z_OK : err; } /* =========================================================================== */ int ZEXPORT compress (dest, destLen, source, sourceLen) Bytef *dest; uLongf *destLen; const Bytef *source; uLong sourceLen; { return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); } /* =========================================================================== If the default memLevel or windowBits for deflateInit() is changed, then this function needs to be updated. */ uLong ZEXPORT compressBound (sourceLen) uLong sourceLen; { return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + (sourceLen >> 25) + 13; } zlib-1.2.11.dfsg/inffixed.h0000644000175000017500000001427411643220520015302 0ustar brooniebroonie /* inffixed.h -- table for decoding fixed codes * Generated automatically by makefixed(). */ /* WARNING: this file should *not* be used by applications. It is part of the implementation of this library and is subject to change. Applications should only use zlib.h. */ static const code lenfix[512] = { {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48}, {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128}, {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59}, {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176}, {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20}, {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100}, {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8}, {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216}, {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76}, {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114}, {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2}, {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148}, {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42}, {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86}, {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15}, {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236}, {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62}, {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142}, {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31}, {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162}, {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25}, {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105}, {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4}, {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202}, {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69}, {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125}, {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13}, {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195}, {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35}, {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91}, {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19}, {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246}, {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55}, {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135}, {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99}, {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190}, {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16}, {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96}, {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6}, {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209}, {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72}, {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116}, {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4}, {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153}, {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44}, {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82}, {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11}, {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229}, {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58}, {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138}, {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51}, {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173}, {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30}, {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110}, {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0}, {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195}, {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65}, {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121}, {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9}, {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258}, {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37}, {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93}, {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23}, {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251}, {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51}, {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131}, {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67}, {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183}, {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23}, {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103}, {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9}, {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223}, {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79}, {0,9,255} }; static const code distfix[32] = { {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025}, {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193}, {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385}, {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577}, {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073}, {22,5,193},{64,5,0} }; zlib-1.2.11.dfsg/CMakeLists.txt0000644000175000017500000001764313036730604016107 0ustar brooniebrooniecmake_minimum_required(VERSION 2.4.4) set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON) project(zlib C) set(VERSION "1.2.11") option(ASM686 "Enable building i686 assembly implementation") option(AMD64 "Enable building amd64 assembly implementation") set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables") set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries") set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers") set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages") set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files") include(CheckTypeSize) include(CheckFunctionExists) include(CheckIncludeFile) include(CheckCSourceCompiles) enable_testing() check_include_file(sys/types.h HAVE_SYS_TYPES_H) check_include_file(stdint.h HAVE_STDINT_H) check_include_file(stddef.h HAVE_STDDEF_H) # # Check to see if we have large file support # set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1) # We add these other definitions here because CheckTypeSize.cmake # in CMake 2.4.x does not automatically do so and we want # compatibility with CMake 2.4.x. if(HAVE_SYS_TYPES_H) list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H) endif() if(HAVE_STDINT_H) list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H) endif() if(HAVE_STDDEF_H) list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H) endif() check_type_size(off64_t OFF64_T) if(HAVE_OFF64_T) add_definitions(-D_LARGEFILE64_SOURCE=1) endif() set(CMAKE_REQUIRED_DEFINITIONS) # clear variable # # Check for fseeko # check_function_exists(fseeko HAVE_FSEEKO) if(NOT HAVE_FSEEKO) add_definitions(-DNO_FSEEKO) endif() # # Check for unistd.h # check_include_file(unistd.h Z_HAVE_UNISTD_H) if(MSVC) set(CMAKE_DEBUG_POSTFIX "d") add_definitions(-D_CRT_SECURE_NO_DEPRECATE) add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE) include_directories(${CMAKE_CURRENT_SOURCE_DIR}) endif() if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR) # If we're doing an out of source build and the user has a zconf.h # in their source tree... if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h) message(STATUS "Renaming") message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h") message(STATUS "to 'zconf.h.included' because this file is included with zlib") message(STATUS "but CMake generates it automatically in the build directory.") file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included) endif() endif() set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc) configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein ${ZLIB_PC} @ONLY) configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein ${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY) include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR}) #============================================================================ # zlib #============================================================================ set(ZLIB_PUBLIC_HDRS ${CMAKE_CURRENT_BINARY_DIR}/zconf.h zlib.h ) set(ZLIB_PRIVATE_HDRS crc32.h deflate.h gzguts.h inffast.h inffixed.h inflate.h inftrees.h trees.h zutil.h ) set(ZLIB_SRCS adler32.c compress.c crc32.c deflate.c gzclose.c gzlib.c gzread.c gzwrite.c inflate.c infback.c inftrees.c inffast.c trees.c uncompr.c zutil.c ) if(NOT MINGW) set(ZLIB_DLL_SRCS win32/zlib1.rc # If present will override custom build rule below. ) endif() if(CMAKE_COMPILER_IS_GNUCC) if(ASM686) set(ZLIB_ASMS contrib/asm686/match.S) elseif (AMD64) set(ZLIB_ASMS contrib/amd64/amd64-match.S) endif () if(ZLIB_ASMS) add_definitions(-DASMV) set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE) endif() endif() if(MSVC) if(ASM686) ENABLE_LANGUAGE(ASM_MASM) set(ZLIB_ASMS contrib/masmx86/inffas32.asm contrib/masmx86/match686.asm ) elseif (AMD64) ENABLE_LANGUAGE(ASM_MASM) set(ZLIB_ASMS contrib/masmx64/gvmat64.asm contrib/masmx64/inffasx64.asm ) endif() if(ZLIB_ASMS) add_definitions(-DASMV -DASMINF) endif() endif() # parse the full version number from zlib.h and include in ZLIB_FULL_VERSION file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents) string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*" "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents}) if(MINGW) # This gets us DLL resource information when compiling on MinGW. if(NOT CMAKE_RC_COMPILER) set(CMAKE_RC_COMPILER windres.exe) endif() add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj COMMAND ${CMAKE_RC_COMPILER} -D GCC_WINDRES -I ${CMAKE_CURRENT_SOURCE_DIR} -I ${CMAKE_CURRENT_BINARY_DIR} -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc) set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj) endif(MINGW) add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS}) add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS}) set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL) set_target_properties(zlib PROPERTIES SOVERSION 1) if(NOT CYGWIN) # This property causes shared libraries on Linux to have the full version # encoded into their final filename. We disable this on Cygwin because # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll # seems to be the default. # # This has no effect with MSVC, on that platform the version info for # the DLL comes from the resource file win32/zlib1.rc set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION}) endif() if(UNIX) # On unix-like platforms the library is almost always called libz set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z) if(NOT APPLE) set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"") endif() elseif(BUILD_SHARED_LIBS AND WIN32) # Creates zlib1.dll when building shared library version set_target_properties(zlib PROPERTIES SUFFIX "1.dll") endif() if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL ) install(TARGETS zlib zlibstatic RUNTIME DESTINATION "${INSTALL_BIN_DIR}" ARCHIVE DESTINATION "${INSTALL_LIB_DIR}" LIBRARY DESTINATION "${INSTALL_LIB_DIR}" ) endif() if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL ) install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}") endif() if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3") endif() if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL ) install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}") endif() #============================================================================ # Example binaries #============================================================================ add_executable(example test/example.c) target_link_libraries(example zlib) add_test(example example) add_executable(minigzip test/minigzip.c) target_link_libraries(minigzip zlib) if(HAVE_OFF64_T) add_executable(example64 test/example.c) target_link_libraries(example64 zlib) set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64") add_test(example64 example64) add_executable(minigzip64 test/minigzip.c) target_link_libraries(minigzip64 zlib) set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64") endif() zlib-1.2.11.dfsg/README0000644000175000017500000001210313036730604014211 0ustar brooniebroonieZLIB DATA COMPRESSION LIBRARY zlib 1.2.11 is a general purpose data compression library. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). All functions of the compression library are documented in the file zlib.h (volunteer to write man pages welcome, contact zlib@gzip.org). A usage example of the library is given in the file test/example.c which also tests that the library is working correctly. Another example is given in the file test/minigzip.c. The compression library itself is composed of all source files in the root directory. To compile all files and run the test program, follow the instructions given at the top of Makefile.in. In short "./configure; make test", and if that goes well, "make install" should work for most flavors of Unix. For Windows, use one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use make_vms.com. Questions about zlib should be sent to , or to Gilles Vollant for the Windows DLL version. The zlib home page is http://zlib.net/ . Before reporting a problem, please check this site to verify that you have the latest version of zlib; otherwise get the latest version and check whether the problem still exists or not. PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. Mark Nelson wrote an article about zlib for the Jan. 1997 issue of Dr. Dobb's Journal; a copy of the article is available at http://marknelson.us/1997/01/01/zlib-engine/ . The changes made in version 1.2.11 are documented in the file ChangeLog. Unsupported third party contributions are provided in directory contrib/ . zlib is available in Java using the java.util.zip package, documented at http://java.sun.com/developer/technicalArticles/Programming/compression/ . A Perl interface to zlib written by Paul Marquess is available at CPAN (Comprehensive Perl Archive Network) sites, including http://search.cpan.org/~pmqs/IO-Compress-Zlib/ . A Python interface to zlib written by A.M. Kuchling is available in Python 1.5 and later versions, see http://docs.python.org/library/zlib.html . zlib is built into tcl: http://wiki.tcl.tk/4610 . An experimental package to read and write files in .zip format, written on top of zlib by Gilles Vollant , is available in the contrib/minizip directory of zlib. Notes for some targets: - For Windows DLL versions, please see win32/DLL_FAQ.txt - For 64-bit Irix, deflate.c must be compiled without any optimization. With -O, one libpng test fails. The test works in 32 bit mode (with the -n32 compiler flag). The compiler bug has been reported to SGI. - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works when compiled with cc. - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is necessary to get gzprintf working correctly. This is done by configure. - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with other compilers. Use "make test" to check your compiler. - gzdopen is not supported on RISCOS or BEOS. - For PalmOs, see http://palmzlib.sourceforge.net/ Acknowledgments: The deflate format used by zlib was defined by Phil Katz. The deflate and zlib specifications were written by L. Peter Deutsch. Thanks to all the people who reported problems and suggested various improvements in zlib; they are too numerous to cite here. Copyright notice: (C) 1995-2017 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler jloup@gzip.org madler@alumni.caltech.edu If you use the zlib library in a product, we would appreciate *not* receiving lengthy legal documents to sign. The sources are provided for free but without warranty of any kind. The library has been entirely written by Jean-loup Gailly and Mark Adler; it does not include third-party code. If you redistribute modified sources, we would appreciate that you include in the file ChangeLog history information documenting your changes. Please read the FAQ for more information on the distribution of modified source versions. zlib-1.2.11.dfsg/zconf.h.cmakein0000644000175000017500000003773513032130646016245 0ustar brooniebroonie/* zconf.h -- configuration of the zlib compression library * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #ifndef ZCONF_H #define ZCONF_H #cmakedefine Z_PREFIX #cmakedefine Z_HAVE_UNISTD_H /* * If you *really* need a unique prefix for all types and library functions, * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. * Even better than compiling with -DZ_PREFIX would be to use configure to set * this permanently in zconf.h using "./configure --zprefix". */ #ifdef Z_PREFIX /* may be set to #if 1 by ./configure */ # define Z_PREFIX_SET /* all linked symbols and init macros */ # define _dist_code z__dist_code # define _length_code z__length_code # define _tr_align z__tr_align # define _tr_flush_bits z__tr_flush_bits # define _tr_flush_block z__tr_flush_block # define _tr_init z__tr_init # define _tr_stored_block z__tr_stored_block # define _tr_tally z__tr_tally # define adler32 z_adler32 # define adler32_combine z_adler32_combine # define adler32_combine64 z_adler32_combine64 # define adler32_z z_adler32_z # ifndef Z_SOLO # define compress z_compress # define compress2 z_compress2 # define compressBound z_compressBound # endif # define crc32 z_crc32 # define crc32_combine z_crc32_combine # define crc32_combine64 z_crc32_combine64 # define crc32_z z_crc32_z # define deflate z_deflate # define deflateBound z_deflateBound # define deflateCopy z_deflateCopy # define deflateEnd z_deflateEnd # define deflateGetDictionary z_deflateGetDictionary # define deflateInit z_deflateInit # define deflateInit2 z_deflateInit2 # define deflateInit2_ z_deflateInit2_ # define deflateInit_ z_deflateInit_ # define deflateParams z_deflateParams # define deflatePending z_deflatePending # define deflatePrime z_deflatePrime # define deflateReset z_deflateReset # define deflateResetKeep z_deflateResetKeep # define deflateSetDictionary z_deflateSetDictionary # define deflateSetHeader z_deflateSetHeader # define deflateTune z_deflateTune # define deflate_copyright z_deflate_copyright # define get_crc_table z_get_crc_table # ifndef Z_SOLO # define gz_error z_gz_error # define gz_intmax z_gz_intmax # define gz_strwinerror z_gz_strwinerror # define gzbuffer z_gzbuffer # define gzclearerr z_gzclearerr # define gzclose z_gzclose # define gzclose_r z_gzclose_r # define gzclose_w z_gzclose_w # define gzdirect z_gzdirect # define gzdopen z_gzdopen # define gzeof z_gzeof # define gzerror z_gzerror # define gzflush z_gzflush # define gzfread z_gzfread # define gzfwrite z_gzfwrite # define gzgetc z_gzgetc # define gzgetc_ z_gzgetc_ # define gzgets z_gzgets # define gzoffset z_gzoffset # define gzoffset64 z_gzoffset64 # define gzopen z_gzopen # define gzopen64 z_gzopen64 # ifdef _WIN32 # define gzopen_w z_gzopen_w # endif # define gzprintf z_gzprintf # define gzputc z_gzputc # define gzputs z_gzputs # define gzread z_gzread # define gzrewind z_gzrewind # define gzseek z_gzseek # define gzseek64 z_gzseek64 # define gzsetparams z_gzsetparams # define gztell z_gztell # define gztell64 z_gztell64 # define gzungetc z_gzungetc # define gzvprintf z_gzvprintf # define gzwrite z_gzwrite # endif # define inflate z_inflate # define inflateBack z_inflateBack # define inflateBackEnd z_inflateBackEnd # define inflateBackInit z_inflateBackInit # define inflateBackInit_ z_inflateBackInit_ # define inflateCodesUsed z_inflateCodesUsed # define inflateCopy z_inflateCopy # define inflateEnd z_inflateEnd # define inflateGetDictionary z_inflateGetDictionary # define inflateGetHeader z_inflateGetHeader # define inflateInit z_inflateInit # define inflateInit2 z_inflateInit2 # define inflateInit2_ z_inflateInit2_ # define inflateInit_ z_inflateInit_ # define inflateMark z_inflateMark # define inflatePrime z_inflatePrime # define inflateReset z_inflateReset # define inflateReset2 z_inflateReset2 # define inflateResetKeep z_inflateResetKeep # define inflateSetDictionary z_inflateSetDictionary # define inflateSync z_inflateSync # define inflateSyncPoint z_inflateSyncPoint # define inflateUndermine z_inflateUndermine # define inflateValidate z_inflateValidate # define inflate_copyright z_inflate_copyright # define inflate_fast z_inflate_fast # define inflate_table z_inflate_table # ifndef Z_SOLO # define uncompress z_uncompress # define uncompress2 z_uncompress2 # endif # define zError z_zError # ifndef Z_SOLO # define zcalloc z_zcalloc # define zcfree z_zcfree # endif # define zlibCompileFlags z_zlibCompileFlags # define zlibVersion z_zlibVersion /* all zlib typedefs in zlib.h and zconf.h */ # define Byte z_Byte # define Bytef z_Bytef # define alloc_func z_alloc_func # define charf z_charf # define free_func z_free_func # ifndef Z_SOLO # define gzFile z_gzFile # endif # define gz_header z_gz_header # define gz_headerp z_gz_headerp # define in_func z_in_func # define intf z_intf # define out_func z_out_func # define uInt z_uInt # define uIntf z_uIntf # define uLong z_uLong # define uLongf z_uLongf # define voidp z_voidp # define voidpc z_voidpc # define voidpf z_voidpf /* all zlib structs in zlib.h and zconf.h */ # define gz_header_s z_gz_header_s # define internal_state z_internal_state #endif #if defined(__MSDOS__) && !defined(MSDOS) # define MSDOS #endif #if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) # define OS2 #endif #if defined(_WINDOWS) && !defined(WINDOWS) # define WINDOWS #endif #if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__) # ifndef WIN32 # define WIN32 # endif #endif #if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) # if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) # ifndef SYS16BIT # define SYS16BIT # endif # endif #endif /* * Compile with -DMAXSEG_64K if the alloc function cannot allocate more * than 64k bytes at a time (needed on systems with 16-bit int). */ #ifdef SYS16BIT # define MAXSEG_64K #endif #ifdef MSDOS # define UNALIGNED_OK #endif #ifdef __STDC_VERSION__ # ifndef STDC # define STDC # endif # if __STDC_VERSION__ >= 199901L # ifndef STDC99 # define STDC99 # endif # endif #endif #if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) # define STDC #endif #if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) # define STDC #endif #if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) # define STDC #endif #if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) # define STDC #endif #if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ # define STDC #endif #ifndef STDC # ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ # define const /* note: need a more gentle solution here */ # endif #endif #if defined(ZLIB_CONST) && !defined(z_const) # define z_const const #else # define z_const #endif #ifdef Z_SOLO typedef unsigned long z_size_t; #else # define z_longlong long long # if defined(NO_SIZE_T) typedef unsigned NO_SIZE_T z_size_t; # elif defined(STDC) # include typedef size_t z_size_t; # else typedef unsigned long z_size_t; # endif # undef z_longlong #endif /* Maximum value for memLevel in deflateInit2 */ #ifndef MAX_MEM_LEVEL # ifdef MAXSEG_64K # define MAX_MEM_LEVEL 8 # else # define MAX_MEM_LEVEL 9 # endif #endif /* Maximum value for windowBits in deflateInit2 and inflateInit2. * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files * created by gzip. (Files created by minigzip can still be extracted by * gzip.) */ #ifndef MAX_WBITS # define MAX_WBITS 15 /* 32K LZ77 window */ #endif /* The memory requirements for deflate are (in bytes): (1 << (windowBits+2)) + (1 << (memLevel+9)) that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) plus a few kilobytes for small objects. For example, if you want to reduce the default memory requirements from 256K to 128K, compile with make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" Of course this will generally degrade compression (there's no free lunch). The memory requirements for inflate are (in bytes) 1 << windowBits that is, 32K for windowBits=15 (default value) plus about 7 kilobytes for small objects. */ /* Type declarations */ #ifndef OF /* function prototypes */ # ifdef STDC # define OF(args) args # else # define OF(args) () # endif #endif #ifndef Z_ARG /* function prototypes for stdarg */ # if defined(STDC) || defined(Z_HAVE_STDARG_H) # define Z_ARG(args) args # else # define Z_ARG(args) () # endif #endif /* The following definitions for FAR are needed only for MSDOS mixed * model programming (small or medium model with some far allocations). * This was tested only with MSC; for other MSDOS compilers you may have * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, * just define FAR to be empty. */ #ifdef SYS16BIT # if defined(M_I86SM) || defined(M_I86MM) /* MSC small or medium model */ # define SMALL_MEDIUM # ifdef _MSC_VER # define FAR _far # else # define FAR far # endif # endif # if (defined(__SMALL__) || defined(__MEDIUM__)) /* Turbo C small or medium model */ # define SMALL_MEDIUM # ifdef __BORLANDC__ # define FAR _far # else # define FAR far # endif # endif #endif #if defined(WINDOWS) || defined(WIN32) /* If building or using zlib as a DLL, define ZLIB_DLL. * This is not mandatory, but it offers a little performance increase. */ # ifdef ZLIB_DLL # if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) # ifdef ZLIB_INTERNAL # define ZEXTERN extern __declspec(dllexport) # else # define ZEXTERN extern __declspec(dllimport) # endif # endif # endif /* ZLIB_DLL */ /* If building or using zlib with the WINAPI/WINAPIV calling convention, * define ZLIB_WINAPI. * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. */ # ifdef ZLIB_WINAPI # ifdef FAR # undef FAR # endif # include /* No need for _export, use ZLIB.DEF instead. */ /* For complete Windows compatibility, use WINAPI, not __stdcall. */ # define ZEXPORT WINAPI # ifdef WIN32 # define ZEXPORTVA WINAPIV # else # define ZEXPORTVA FAR CDECL # endif # endif #endif #if defined (__BEOS__) # ifdef ZLIB_DLL # ifdef ZLIB_INTERNAL # define ZEXPORT __declspec(dllexport) # define ZEXPORTVA __declspec(dllexport) # else # define ZEXPORT __declspec(dllimport) # define ZEXPORTVA __declspec(dllimport) # endif # endif #endif #ifndef ZEXTERN # define ZEXTERN extern #endif #ifndef ZEXPORT # define ZEXPORT #endif #ifndef ZEXPORTVA # define ZEXPORTVA #endif #ifndef FAR # define FAR #endif #if !defined(__MACTYPES__) typedef unsigned char Byte; /* 8 bits */ #endif typedef unsigned int uInt; /* 16 bits or more */ typedef unsigned long uLong; /* 32 bits or more */ #ifdef SMALL_MEDIUM /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ # define Bytef Byte FAR #else typedef Byte FAR Bytef; #endif typedef char FAR charf; typedef int FAR intf; typedef uInt FAR uIntf; typedef uLong FAR uLongf; #ifdef STDC typedef void const *voidpc; typedef void FAR *voidpf; typedef void *voidp; #else typedef Byte const *voidpc; typedef Byte FAR *voidpf; typedef Byte *voidp; #endif #if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC) # include # if (UINT_MAX == 0xffffffffUL) # define Z_U4 unsigned # elif (ULONG_MAX == 0xffffffffUL) # define Z_U4 unsigned long # elif (USHRT_MAX == 0xffffffffUL) # define Z_U4 unsigned short # endif #endif #ifdef Z_U4 typedef Z_U4 z_crc_t; #else typedef unsigned long z_crc_t; #endif #ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_UNISTD_H #endif #ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_STDARG_H #endif #ifdef STDC # ifndef Z_SOLO # include /* for off_t */ # endif #endif #if defined(STDC) || defined(Z_HAVE_STDARG_H) # ifndef Z_SOLO # include /* for va_list */ # endif #endif #ifdef _WIN32 # ifndef Z_SOLO # include /* for wchar_t */ # endif #endif /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even * though the former does not conform to the LFS document), but considering * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as * equivalently requesting no 64-bit operations */ #if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 # undef _LARGEFILE64_SOURCE #endif #if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H) # define Z_HAVE_UNISTD_H #endif #ifndef Z_SOLO # if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) # include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ # ifdef VMS # include /* for off_t */ # endif # ifndef z_off_t # define z_off_t off_t # endif # endif #endif #if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 # define Z_LFS64 #endif #if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) # define Z_LARGE64 #endif #if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) # define Z_WANT64 #endif #if !defined(SEEK_SET) && !defined(Z_SOLO) # define SEEK_SET 0 /* Seek from beginning of file. */ # define SEEK_CUR 1 /* Seek from current position. */ # define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ #endif #ifndef z_off_t # define z_off_t long #endif #if !defined(_WIN32) && defined(Z_LARGE64) # define z_off64_t off64_t #else # if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO) # define z_off64_t __int64 # else # define z_off64_t z_off_t # endif #endif /* MVS linker does not support external names larger than 8 bytes */ #if defined(__MVS__) #pragma map(deflateInit_,"DEIN") #pragma map(deflateInit2_,"DEIN2") #pragma map(deflateEnd,"DEEND") #pragma map(deflateBound,"DEBND") #pragma map(inflateInit_,"ININ") #pragma map(inflateInit2_,"ININ2") #pragma map(inflateEnd,"INEND") #pragma map(inflateSync,"INSY") #pragma map(inflateSetDictionary,"INSEDI") #pragma map(compressBound,"CMBND") #pragma map(inflate_table,"INTABL") #pragma map(inflate_fast,"INFA") #pragma map(inflate_copyright,"INCOPY") #endif #endif /* ZCONF_H */ zlib-1.2.11.dfsg/FAQ0000644000175000017500000004027511664533204013700 0ustar brooniebroonie Frequently Asked Questions about zlib If your question is not there, please check the zlib home page http://zlib.net/ which may have more recent information. The lastest zlib FAQ is at http://zlib.net/zlib_faq.html 1. Is zlib Y2K-compliant? Yes. zlib doesn't handle dates. 2. Where can I get a Windows DLL version? The zlib sources can be compiled without change to produce a DLL. See the file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the precompiled DLL are found in the zlib web site at http://zlib.net/ . 3. Where can I get a Visual Basic interface to zlib? See * http://marknelson.us/1997/01/01/zlib-engine/ * win32/DLL_FAQ.txt in the zlib distribution 4. compress() returns Z_BUF_ERROR. Make sure that before the call of compress(), the length of the compressed buffer is equal to the available size of the compressed buffer and not zero. For Visual Basic, check that this parameter is passed by reference ("as any"), not by value ("as long"). 5. deflate() or inflate() returns Z_BUF_ERROR. Before making the call, make sure that avail_in and avail_out are not zero. When setting the parameter flush equal to Z_FINISH, also make sure that avail_out is big enough to allow processing all pending input. Note that a Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be made with more input or output space. A Z_BUF_ERROR may in fact be unavoidable depending on how the functions are used, since it is not possible to tell whether or not there is more output pending when strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a heavily annotated example. 6. Where's the zlib documentation (man pages, etc.)? It's in zlib.h . Examples of zlib usage are in the files test/example.c and test/minigzip.c, with more in examples/ . 7. Why don't you use GNU autoconf or libtool or ...? Because we would like to keep zlib as a very small and simple package. zlib is rather portable and doesn't need much configuration. 8. I found a bug in zlib. Most of the time, such problems are due to an incorrect usage of zlib. Please try to reproduce the problem with a small program and send the corresponding source to us at zlib@gzip.org . Do not send multi-megabyte data files without prior agreement. 9. Why do I get "undefined reference to gzputc"? If "make test" produces something like example.o(.text+0x154): undefined reference to `gzputc' check that you don't have old files libz.* in /usr/lib, /usr/local/lib or /usr/X11R6/lib. Remove any old versions, then do "make install". 10. I need a Delphi interface to zlib. See the contrib/delphi directory in the zlib distribution. 11. Can zlib handle .zip archives? Not by itself, no. See the directory contrib/minizip in the zlib distribution. 12. Can zlib handle .Z files? No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt the code of uncompress on your own. 13. How can I make a Unix shared library? By default a shared (and a static) library is built for Unix. So: make distclean ./configure make 14. How do I install a shared zlib library on Unix? After the above, then: make install However, many flavors of Unix come with a shared zlib already installed. Before going to the trouble of compiling a shared version of zlib and trying to install it, you may want to check if it's already there! If you can #include , it's there. The -lz option will probably link to it. You can check the version at the top of zlib.h or with the ZLIB_VERSION symbol defined in zlib.h . 15. I have a question about OttoPDF. We are not the authors of OttoPDF. The real author is on the OttoPDF web site: Joel Hainley, jhainley@myndkryme.com. 16. Can zlib decode Flate data in an Adobe PDF file? Yes. See http://www.pdflib.com/ . To modify PDF forms, see http://sourceforge.net/projects/acroformtool/ . 17. Why am I getting this "register_frame_info not found" error on Solaris? After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib generates an error such as: ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so: symbol __register_frame_info: referenced symbol not found The symbol __register_frame_info is not part of zlib, it is generated by the C compiler (cc or gcc). You must recompile applications using zlib which have this problem. This problem is specific to Solaris. See http://www.sunfreeware.com for Solaris versions of zlib and applications using zlib. 18. Why does gzip give an error on a file I make with compress/deflate? The compress and deflate functions produce data in the zlib format, which is different and incompatible with the gzip format. The gz* functions in zlib on the other hand use the gzip format. Both the zlib and gzip formats use the same compressed data format internally, but have different headers and trailers around the compressed data. 19. Ok, so why are there two different formats? The gzip format was designed to retain the directory information about a single file, such as the name and last modification date. The zlib format on the other hand was designed for in-memory and communication channel applications, and has a much more compact header and trailer and uses a faster integrity check than gzip. 20. Well that's nice, but how do I make a gzip file in memory? You can request that deflate write the gzip format instead of the zlib format using deflateInit2(). You can also request that inflate decode the gzip format using inflateInit2(). Read zlib.h for more details. 21. Is zlib thread-safe? Yes. However any library routines that zlib uses and any application- provided memory allocation routines must also be thread-safe. zlib's gz* functions use stdio library routines, and most of zlib's functions use the library memory allocation routines by default. zlib's *Init* functions allow for the application to provide custom memory allocation routines. Of course, you should only operate on any given zlib or gzip stream from a single thread at a time. 22. Can I use zlib in my commercial application? Yes. Please read the license in zlib.h. 23. Is zlib under the GNU license? No. Please read the license in zlib.h. 24. The license says that altered source versions must be "plainly marked". So what exactly do I need to do to meet that requirement? You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In particular, the final version number needs to be changed to "f", and an identification string should be appended to ZLIB_VERSION. Version numbers x.x.x.f are reserved for modifications to zlib by others than the zlib maintainers. For example, if the version of the base zlib you are altering is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also update the version strings in deflate.c and inftrees.c. For altered source distributions, you should also note the origin and nature of the changes in zlib.h, as well as in ChangeLog and README, along with the dates of the alterations. The origin should include at least your name (or your company's name), and an email address to contact for help or issues with the library. Note that distributing a compiled zlib library along with zlib.h and zconf.h is also a source distribution, and so you should change ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes in zlib.h as you would for a full source distribution. 25. Will zlib work on a big-endian or little-endian architecture, and can I exchange compressed data between them? Yes and yes. 26. Will zlib work on a 64-bit machine? Yes. It has been tested on 64-bit machines, and has no dependence on any data types being limited to 32-bits in length. If you have any difficulties, please provide a complete problem report to zlib@gzip.org 27. Will zlib decompress data from the PKWare Data Compression Library? No. The PKWare DCL uses a completely different compressed data format than does PKZIP and zlib. However, you can look in zlib's contrib/blast directory for a possible solution to your problem. 28. Can I access data randomly in a compressed stream? No, not without some preparation. If when compressing you periodically use Z_FULL_FLUSH, carefully write all the pending data at those points, and keep an index of those locations, then you can start decompression at those points. You have to be careful to not use Z_FULL_FLUSH too often, since it can significantly degrade compression. Alternatively, you can scan a deflate stream once to generate an index, and then use that index for random access. See examples/zran.c . 29. Does zlib work on MVS, OS/390, CICS, etc.? It has in the past, but we have not heard of any recent evidence. There were working ports of zlib 1.1.4 to MVS, but those links no longer work. If you know of recent, successful applications of zlib on these operating systems, please let us know. Thanks. 30. Is there some simpler, easier to read version of inflate I can look at to understand the deflate format? First off, you should read RFC 1951. Second, yes. Look in zlib's contrib/puff directory. 31. Does zlib infringe on any patents? As far as we know, no. In fact, that was originally the whole point behind zlib. Look here for some more information: http://www.gzip.org/#faq11 32. Can zlib work with greater than 4 GB of data? Yes. inflate() and deflate() will process any amount of data correctly. Each call of inflate() or deflate() is limited to input and output chunks of the maximum value that can be stored in the compiler's "unsigned int" type, but there is no limit to the number of chunks. Note however that the strm.total_in and strm_total_out counters may be limited to 4 GB. These counters are provided as a convenience and are not used internally by inflate() or deflate(). The application can easily set up its own counters updated after each call of inflate() or deflate() to count beyond 4 GB. compress() and uncompress() may be limited to 4 GB, since they operate in a single call. gzseek() and gztell() may be limited to 4 GB depending on how zlib is compiled. See the zlibCompileFlags() function in zlib.h. The word "may" appears several times above since there is a 4 GB limit only if the compiler's "long" type is 32 bits. If the compiler's "long" type is 64 bits, then the limit is 16 exabytes. 33. Does zlib have any security vulnerabilities? The only one that we are aware of is potentially in gzprintf(). If zlib is compiled to use sprintf() or vsprintf(), then there is no protection against a buffer overflow of an 8K string space (or other value as set by gzbuffer()), other than the caller of gzprintf() assuring that the output will not exceed 8K. On the other hand, if zlib is compiled to use snprintf() or vsnprintf(), which should normally be the case, then there is no vulnerability. The ./configure script will display warnings if an insecure variation of sprintf() will be used by gzprintf(). Also the zlibCompileFlags() function will return information on what variant of sprintf() is used by gzprintf(). If you don't have snprintf() or vsnprintf() and would like one, you can find a portable implementation here: http://www.ijs.si/software/snprintf/ Note that you should be using the most recent version of zlib. Versions 1.1.3 and before were subject to a double-free vulnerability, and versions 1.2.1 and 1.2.2 were subject to an access exception when decompressing invalid compressed data. 34. Is there a Java version of zlib? Probably what you want is to use zlib in Java. zlib is already included as part of the Java SDK in the java.util.zip package. If you really want a version of zlib written in the Java language, look on the zlib home page for links: http://zlib.net/ . 35. I get this or that compiler or source-code scanner warning when I crank it up to maximally-pedantic. Can't you guys write proper code? Many years ago, we gave up attempting to avoid warnings on every compiler in the universe. It just got to be a waste of time, and some compilers were downright silly as well as contradicted each other. So now, we simply make sure that the code always works. 36. Valgrind (or some similar memory access checker) says that deflate is performing a conditional jump that depends on an uninitialized value. Isn't that a bug? No. That is intentional for performance reasons, and the output of deflate is not affected. This only started showing up recently since zlib 1.2.x uses malloc() by default for allocations, whereas earlier versions used calloc(), which zeros out the allocated memory. Even though the code was correct, versions 1.2.4 and later was changed to not stimulate these checkers. 37. Will zlib read the (insert any ancient or arcane format here) compressed data format? Probably not. Look in the comp.compression FAQ for pointers to various formats and associated software. 38. How can I encrypt/decrypt zip files with zlib? zlib doesn't support encryption. The original PKZIP encryption is very weak and can be broken with freely available programs. To get strong encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib compression. For PKZIP compatible "encryption", look at http://www.info-zip.org/ 39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings? "gzip" is the gzip format, and "deflate" is the zlib format. They should probably have called the second one "zlib" instead to avoid confusion with the raw deflate compressed data format. While the HTTP 1.1 RFC 2616 correctly points to the zlib specification in RFC 1950 for the "deflate" transfer encoding, there have been reports of servers and browsers that incorrectly produce or expect raw deflate data per the deflate specification in RFC 1951, most notably Microsoft. So even though the "deflate" transfer encoding using the zlib format would be the more efficient approach (and in fact exactly what the zlib format was designed for), using the "gzip" transfer encoding is probably more reliable due to an unfortunate choice of name on the part of the HTTP 1.1 authors. Bottom line: use the gzip format for HTTP 1.1 encoding. 40. Does zlib support the new "Deflate64" format introduced by PKWare? No. PKWare has apparently decided to keep that format proprietary, since they have not documented it as they have previous compression formats. In any case, the compression improvements are so modest compared to other more modern approaches, that it's not worth the effort to implement. 41. I'm having a problem with the zip functions in zlib, can you help? There are no zip functions in zlib. You are probably using minizip by Giles Vollant, which is found in the contrib directory of zlib. It is not part of zlib. In fact none of the stuff in contrib is part of zlib. The files in there are not supported by the zlib authors. You need to contact the authors of the respective contribution for help. 42. The match.asm code in contrib is under the GNU General Public License. Since it's part of zlib, doesn't that mean that all of zlib falls under the GNU GPL? No. The files in contrib are not part of zlib. They were contributed by other authors and are provided as a convenience to the user within the zlib distribution. Each item in contrib has its own license. 43. Is zlib subject to export controls? What is its ECCN? zlib is not subject to export controls, and so is classified as EAR99. 44. Can you please sign these lengthy legal documents and fax them back to us so that we can use your software in our product? No. Go away. Shoo. zlib-1.2.11.dfsg/inffast.c0000644000175000017500000003126213036730604015136 0ustar brooniebroonie/* inffast.c -- fast decoding * Copyright (C) 1995-2017 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "zutil.h" #include "inftrees.h" #include "inflate.h" #include "inffast.h" #ifdef ASMINF # pragma message("Assembler code may have bugs -- use at your own risk") #else /* Decode literal, length, and distance codes and write out the resulting literal and match bytes until either not enough input or output is available, an end-of-block is encountered, or a data error is encountered. When large enough input and output buffers are supplied to inflate(), for example, a 16K input buffer and a 64K output buffer, more than 95% of the inflate execution time is spent in this routine. Entry assumptions: state->mode == LEN strm->avail_in >= 6 strm->avail_out >= 258 start >= strm->avail_out state->bits < 8 On return, state->mode is one of: LEN -- ran out of enough output space or enough available input TYPE -- reached end of block code, inflate() to interpret next block BAD -- error in block data Notes: - The maximum input bits used by a length/distance pair is 15 bits for the length code, 5 bits for the length extra, 15 bits for the distance code, and 13 bits for the distance extra. This totals 48 bits, or six bytes. Therefore if strm->avail_in >= 6, then there is enough input to avoid checking for available input while decoding. - The maximum bytes that a single length/distance pair can output is 258 bytes, which is the maximum length that can be coded. inflate_fast() requires strm->avail_out >= 258 for each loop to avoid checking for output space. */ void ZLIB_INTERNAL inflate_fast(strm, start) z_streamp strm; unsigned start; /* inflate()'s starting value for strm->avail_out */ { struct inflate_state FAR *state; z_const unsigned char FAR *in; /* local strm->next_in */ z_const unsigned char FAR *last; /* have enough input while in < last */ unsigned char FAR *out; /* local strm->next_out */ unsigned char FAR *beg; /* inflate()'s initial strm->next_out */ unsigned char FAR *end; /* while out < end, enough space available */ #ifdef INFLATE_STRICT unsigned dmax; /* maximum distance from zlib header */ #endif unsigned wsize; /* window size or zero if not using window */ unsigned whave; /* valid bytes in the window */ unsigned wnext; /* window write index */ unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */ unsigned long hold; /* local strm->hold */ unsigned bits; /* local strm->bits */ code const FAR *lcode; /* local strm->lencode */ code const FAR *dcode; /* local strm->distcode */ unsigned lmask; /* mask for first level of length codes */ unsigned dmask; /* mask for first level of distance codes */ code here; /* retrieved table entry */ unsigned op; /* code bits, operation, extra bits, or */ /* window position, window bytes to copy */ unsigned len; /* match length, unused bytes */ unsigned dist; /* match distance */ unsigned char FAR *from; /* where to copy match from */ /* copy state to local variables */ state = (struct inflate_state FAR *)strm->state; in = strm->next_in; last = in + (strm->avail_in - 5); out = strm->next_out; beg = out - (start - strm->avail_out); end = out + (strm->avail_out - 257); #ifdef INFLATE_STRICT dmax = state->dmax; #endif wsize = state->wsize; whave = state->whave; wnext = state->wnext; window = state->window; hold = state->hold; bits = state->bits; lcode = state->lencode; dcode = state->distcode; lmask = (1U << state->lenbits) - 1; dmask = (1U << state->distbits) - 1; /* decode literals and length/distances until end-of-block or not enough input data or output space */ do { if (bits < 15) { hold += (unsigned long)(*in++) << bits; bits += 8; hold += (unsigned long)(*in++) << bits; bits += 8; } here = lcode[hold & lmask]; dolen: op = (unsigned)(here.bits); hold >>= op; bits -= op; op = (unsigned)(here.op); if (op == 0) { /* literal */ Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? "inflate: literal '%c'\n" : "inflate: literal 0x%02x\n", here.val)); *out++ = (unsigned char)(here.val); } else if (op & 16) { /* length base */ len = (unsigned)(here.val); op &= 15; /* number of extra bits */ if (op) { if (bits < op) { hold += (unsigned long)(*in++) << bits; bits += 8; } len += (unsigned)hold & ((1U << op) - 1); hold >>= op; bits -= op; } Tracevv((stderr, "inflate: length %u\n", len)); if (bits < 15) { hold += (unsigned long)(*in++) << bits; bits += 8; hold += (unsigned long)(*in++) << bits; bits += 8; } here = dcode[hold & dmask]; dodist: op = (unsigned)(here.bits); hold >>= op; bits -= op; op = (unsigned)(here.op); if (op & 16) { /* distance base */ dist = (unsigned)(here.val); op &= 15; /* number of extra bits */ if (bits < op) { hold += (unsigned long)(*in++) << bits; bits += 8; if (bits < op) { hold += (unsigned long)(*in++) << bits; bits += 8; } } dist += (unsigned)hold & ((1U << op) - 1); #ifdef INFLATE_STRICT if (dist > dmax) { strm->msg = (char *)"invalid distance too far back"; state->mode = BAD; break; } #endif hold >>= op; bits -= op; Tracevv((stderr, "inflate: distance %u\n", dist)); op = (unsigned)(out - beg); /* max distance in output */ if (dist > op) { /* see if copy from window */ op = dist - op; /* distance back in window */ if (op > whave) { if (state->sane) { strm->msg = (char *)"invalid distance too far back"; state->mode = BAD; break; } #ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR if (len <= op - whave) { do { *out++ = 0; } while (--len); continue; } len -= op - whave; do { *out++ = 0; } while (--op > whave); if (op == 0) { from = out - dist; do { *out++ = *from++; } while (--len); continue; } #endif } from = window; if (wnext == 0) { /* very common case */ from += wsize - op; if (op < len) { /* some from window */ len -= op; do { *out++ = *from++; } while (--op); from = out - dist; /* rest from output */ } } else if (wnext < op) { /* wrap around window */ from += wsize + wnext - op; op -= wnext; if (op < len) { /* some from end of window */ len -= op; do { *out++ = *from++; } while (--op); from = window; if (wnext < len) { /* some from start of window */ op = wnext; len -= op; do { *out++ = *from++; } while (--op); from = out - dist; /* rest from output */ } } } else { /* contiguous in window */ from += wnext - op; if (op < len) { /* some from window */ len -= op; do { *out++ = *from++; } while (--op); from = out - dist; /* rest from output */ } } while (len > 2) { *out++ = *from++; *out++ = *from++; *out++ = *from++; len -= 3; } if (len) { *out++ = *from++; if (len > 1) *out++ = *from++; } } else { from = out - dist; /* copy direct from output */ do { /* minimum length is three */ *out++ = *from++; *out++ = *from++; *out++ = *from++; len -= 3; } while (len > 2); if (len) { *out++ = *from++; if (len > 1) *out++ = *from++; } } } else if ((op & 64) == 0) { /* 2nd level distance code */ here = dcode[here.val + (hold & ((1U << op) - 1))]; goto dodist; } else { strm->msg = (char *)"invalid distance code"; state->mode = BAD; break; } } else if ((op & 64) == 0) { /* 2nd level length code */ here = lcode[here.val + (hold & ((1U << op) - 1))]; goto dolen; } else if (op & 32) { /* end-of-block */ Tracevv((stderr, "inflate: end of block\n")); state->mode = TYPE; break; } else { strm->msg = (char *)"invalid literal/length code"; state->mode = BAD; break; } } while (in < last && out < end); /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ len = bits >> 3; in -= len; bits -= len << 3; hold &= (1U << bits) - 1; /* update state and return */ strm->next_in = in; strm->next_out = out; strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last)); strm->avail_out = (unsigned)(out < end ? 257 + (end - out) : 257 - (out - end)); state->hold = hold; state->bits = bits; return; } /* inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe): - Using bit fields for code structure - Different op definition to avoid & for extra bits (do & for table bits) - Three separate decoding do-loops for direct, window, and wnext == 0 - Special case for distance > 1 copies to do overlapped load and store copy - Explicit branch predictions (based on measured branch probabilities) - Deferring match copy and interspersed it with decoding subsequent codes - Swapping literal/length else - Swapping window/direct else - Larger unrolled copy loops (three is about right) - Moving len -= 3 statement into middle of loop */ #endif /* !ASMINF */ zlib-1.2.11.dfsg/amiga/0000755000175000017500000000000013162250104014402 5ustar brooniebrooniezlib-1.2.11.dfsg/amiga/Makefile.sas0000644000175000017500000000346711335641072016651 0ustar brooniebroonie# SMakefile for zlib # Modified from the standard UNIX Makefile Copyright Jean-loup Gailly # Osma Ahvenlampi # Amiga, SAS/C 6.56 & Smake CC=sc CFLAGS=OPT #CFLAGS=OPT CPU=68030 #CFLAGS=DEBUG=LINE LDFLAGS=LIB z.lib SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \ NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \ DEF=POSTINC OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \ uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o TEST_OBJS = example.o minigzip.o all: SCOPTIONS example minigzip check: test test: all example echo hello world | minigzip | minigzip -d install: z.lib copy clone zlib.h zconf.h INCLUDE: copy clone z.lib LIB: z.lib: $(OBJS) oml z.lib r $(OBJS) example: example.o z.lib $(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS) minigzip: minigzip.o z.lib $(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS) mostlyclean: clean clean: -delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS SCOPTIONS: Makefile.sas copy to $@ #include #include #include #define local static /* special data types */ typedef unsigned long long big_t; /* type for code counting */ typedef unsigned long long code_t; /* type for bit pattern counting */ struct tab { /* type for been here check */ size_t len; /* length of bit vector in char's */ char *vec; /* allocated bit vector */ }; /* The array for saving results, num[], is indexed with this triplet: syms: number of symbols remaining to code left: number of available bit patterns at length len len: number of bits in the codes currently being assigned Those indices are constrained thusly when saving results: syms: 3..totsym (totsym == total symbols to code) left: 2..syms - 1, but only the evens (so syms == 8 -> 2, 4, 6) len: 1..max - 1 (max == maximum code length in bits) syms == 2 is not saved since that immediately leads to a single code. left must be even, since it represents the number of available bit patterns at the current length, which is double the number at the previous length. left ends at syms-1 since left == syms immediately results in a single code. (left > sym is not allowed since that would result in an incomplete code.) len is less than max, since the code completes immediately when len == max. The offset into the array is calculated for the three indices with the first one (syms) being outermost, and the last one (len) being innermost. We build the array with length max-1 lists for the len index, with syms-3 of those for each symbol. There are totsym-2 of those, with each one varying in length as a function of sym. See the calculation of index in count() for the index, and the calculation of size in main() for the size of the array. For the deflate example of 286 symbols limited to 15-bit codes, the array has 284,284 entries, taking up 2.17 MB for an 8-byte big_t. More than half of the space allocated for saved results is actually used -- not all possible triplets are reached in the generation of valid Huffman codes. */ /* The array for tracking visited states, done[], is itself indexed identically to the num[] array as described above for the (syms, left, len) triplet. Each element in the array is further indexed by the (mem, rem) doublet, where mem is the amount of inflate table space used so far, and rem is the remaining unused entries in the current inflate sub-table. Each indexed element is simply one bit indicating whether the state has been visited or not. Since the ranges for mem and rem are not known a priori, each bit vector is of a variable size, and grows as needed to accommodate the visited states. mem and rem are used to calculate a single index in a triangular array. Since the range of mem is expected in the default case to be about ten times larger than the range of rem, the array is skewed to reduce the memory usage, with eight times the range for mem than for rem. See the calculations for offset and bit in beenhere() for the details. For the deflate example of 286 symbols limited to 15-bit codes, the bit vectors grow to total approximately 21 MB, in addition to the 4.3 MB done[] array itself. */ /* Globals to avoid propagating constants or constant pointers recursively */ local int max; /* maximum allowed bit length for the codes */ local int root; /* size of base code table in bits */ local int large; /* largest code table so far */ local size_t size; /* number of elements in num and done */ local int *code; /* number of symbols assigned to each bit length */ local big_t *num; /* saved results array for code counting */ local struct tab *done; /* states already evaluated array */ /* Index function for num[] and done[] */ #define INDEX(i,j,k) (((size_t)((i-1)>>1)*((i-2)>>1)+(j>>1)-1)*(max-1)+k-1) /* Free allocated space. Uses globals code, num, and done. */ local void cleanup(void) { size_t n; if (done != NULL) { for (n = 0; n < size; n++) if (done[n].len) free(done[n].vec); free(done); } if (num != NULL) free(num); if (code != NULL) free(code); } /* Return the number of possible Huffman codes using bit patterns of lengths len through max inclusive, coding syms symbols, with left bit patterns of length len unused -- return -1 if there is an overflow in the counting. Keep a record of previous results in num to prevent repeating the same calculation. Uses the globals max and num. */ local big_t count(int syms, int len, int left) { big_t sum; /* number of possible codes from this juncture */ big_t got; /* value returned from count() */ int least; /* least number of syms to use at this juncture */ int most; /* most number of syms to use at this juncture */ int use; /* number of bit patterns to use in next call */ size_t index; /* index of this case in *num */ /* see if only one possible code */ if (syms == left) return 1; /* note and verify the expected state */ assert(syms > left && left > 0 && len < max); /* see if we've done this one already */ index = INDEX(syms, left, len); got = num[index]; if (got) return got; /* we have -- return the saved result */ /* we need to use at least this many bit patterns so that the code won't be incomplete at the next length (more bit patterns than symbols) */ least = (left << 1) - syms; if (least < 0) least = 0; /* we can use at most this many bit patterns, lest there not be enough available for the remaining symbols at the maximum length (if there were no limit to the code length, this would become: most = left - 1) */ most = (((code_t)left << (max - len)) - syms) / (((code_t)1 << (max - len)) - 1); /* count all possible codes from this juncture and add them up */ sum = 0; for (use = least; use <= most; use++) { got = count(syms - use, len + 1, (left - use) << 1); sum += got; if (got == (big_t)0 - 1 || sum < got) /* overflow */ return (big_t)0 - 1; } /* verify that all recursive calls are productive */ assert(sum != 0); /* save the result and return it */ num[index] = sum; return sum; } /* Return true if we've been here before, set to true if not. Set a bit in a bit vector to indicate visiting this state. Each (syms,len,left) state has a variable size bit vector indexed by (mem,rem). The bit vector is lengthened if needed to allow setting the (mem,rem) bit. */ local int beenhere(int syms, int len, int left, int mem, int rem) { size_t index; /* index for this state's bit vector */ size_t offset; /* offset in this state's bit vector */ int bit; /* mask for this state's bit */ size_t length; /* length of the bit vector in bytes */ char *vector; /* new or enlarged bit vector */ /* point to vector for (syms,left,len), bit in vector for (mem,rem) */ index = INDEX(syms, left, len); mem -= 1 << root; offset = (mem >> 3) + rem; offset = ((offset * (offset + 1)) >> 1) + rem; bit = 1 << (mem & 7); /* see if we've been here */ length = done[index].len; if (offset < length && (done[index].vec[offset] & bit) != 0) return 1; /* done this! */ /* we haven't been here before -- set the bit to show we have now */ /* see if we need to lengthen the vector in order to set the bit */ if (length <= offset) { /* if we have one already, enlarge it, zero out the appended space */ if (length) { do { length <<= 1; } while (length <= offset); vector = realloc(done[index].vec, length); if (vector != NULL) memset(vector + done[index].len, 0, length - done[index].len); } /* otherwise we need to make a new vector and zero it out */ else { length = 1 << (len - root); while (length <= offset) length <<= 1; vector = calloc(length, sizeof(char)); } /* in either case, bail if we can't get the memory */ if (vector == NULL) { fputs("abort: unable to allocate enough memory\n", stderr); cleanup(); exit(1); } /* install the new vector */ done[index].len = length; done[index].vec = vector; } /* set the bit */ done[index].vec[offset] |= bit; return 0; } /* Examine all possible codes from the given node (syms, len, left). Compute the amount of memory required to build inflate's decoding tables, where the number of code structures used so far is mem, and the number remaining in the current sub-table is rem. Uses the globals max, code, root, large, and done. */ local void examine(int syms, int len, int left, int mem, int rem) { int least; /* least number of syms to use at this juncture */ int most; /* most number of syms to use at this juncture */ int use; /* number of bit patterns to use in next call */ /* see if we have a complete code */ if (syms == left) { /* set the last code entry */ code[len] = left; /* complete computation of memory used by this code */ while (rem < left) { left -= rem; rem = 1 << (len - root); mem += rem; } assert(rem == left); /* if this is a new maximum, show the entries used and the sub-code */ if (mem > large) { large = mem; printf("max %d: ", mem); for (use = root + 1; use <= max; use++) if (code[use]) printf("%d[%d] ", code[use], use); putchar('\n'); fflush(stdout); } /* remove entries as we drop back down in the recursion */ code[len] = 0; return; } /* prune the tree if we can */ if (beenhere(syms, len, left, mem, rem)) return; /* we need to use at least this many bit patterns so that the code won't be incomplete at the next length (more bit patterns than symbols) */ least = (left << 1) - syms; if (least < 0) least = 0; /* we can use at most this many bit patterns, lest there not be enough available for the remaining symbols at the maximum length (if there were no limit to the code length, this would become: most = left - 1) */ most = (((code_t)left << (max - len)) - syms) / (((code_t)1 << (max - len)) - 1); /* occupy least table spaces, creating new sub-tables as needed */ use = least; while (rem < use) { use -= rem; rem = 1 << (len - root); mem += rem; } rem -= use; /* examine codes from here, updating table space as we go */ for (use = least; use <= most; use++) { code[len] = use; examine(syms - use, len + 1, (left - use) << 1, mem + (rem ? 1 << (len - root) : 0), rem << 1); if (rem == 0) { rem = 1 << (len - root); mem += rem; } rem--; } /* remove entries as we drop back down in the recursion */ code[len] = 0; } /* Look at all sub-codes starting with root + 1 bits. Look at only the valid intermediate code states (syms, left, len). For each completed code, calculate the amount of memory required by inflate to build the decoding tables. Find the maximum amount of memory required and show the code that requires that maximum. Uses the globals max, root, and num. */ local void enough(int syms) { int n; /* number of remaing symbols for this node */ int left; /* number of unused bit patterns at this length */ size_t index; /* index of this case in *num */ /* clear code */ for (n = 0; n <= max; n++) code[n] = 0; /* look at all (root + 1) bit and longer codes */ large = 1 << root; /* base table */ if (root < max) /* otherwise, there's only a base table */ for (n = 3; n <= syms; n++) for (left = 2; left < n; left += 2) { /* look at all reachable (root + 1) bit nodes, and the resulting codes (complete at root + 2 or more) */ index = INDEX(n, left, root + 1); if (root + 1 < max && num[index]) /* reachable node */ examine(n, root + 1, left, 1 << root, 0); /* also look at root bit codes with completions at root + 1 bits (not saved in num, since complete), just in case */ if (num[index - 1] && n <= left << 1) examine((n - left) << 1, root + 1, (n - left) << 1, 1 << root, 0); } /* done */ printf("done: maximum of %d table entries\n", large); } /* Examine and show the total number of possible Huffman codes for a given maximum number of symbols, initial root table size, and maximum code length in bits -- those are the command arguments in that order. The default values are 286, 9, and 15 respectively, for the deflate literal/length code. The possible codes are counted for each number of coded symbols from two to the maximum. The counts for each of those and the total number of codes are shown. The maximum number of inflate table entires is then calculated across all possible codes. Each new maximum number of table entries and the associated sub-code (starting at root + 1 == 10 bits) is shown. To count and examine Huffman codes that are not length-limited, provide a maximum length equal to the number of symbols minus one. For the deflate literal/length code, use "enough". For the deflate distance code, use "enough 30 6". This uses the %llu printf format to print big_t numbers, which assumes that big_t is an unsigned long long. If the big_t type is changed (for example to a multiple precision type), the method of printing will also need to be updated. */ int main(int argc, char **argv) { int syms; /* total number of symbols to code */ int n; /* number of symbols to code for this run */ big_t got; /* return value of count() */ big_t sum; /* accumulated number of codes over n */ code_t word; /* for counting bits in code_t */ /* set up globals for cleanup() */ code = NULL; num = NULL; done = NULL; /* get arguments -- default to the deflate literal/length code */ syms = 286; root = 9; max = 15; if (argc > 1) { syms = atoi(argv[1]); if (argc > 2) { root = atoi(argv[2]); if (argc > 3) max = atoi(argv[3]); } } if (argc > 4 || syms < 2 || root < 1 || max < 1) { fputs("invalid arguments, need: [sym >= 2 [root >= 1 [max >= 1]]]\n", stderr); return 1; } /* if not restricting the code length, the longest is syms - 1 */ if (max > syms - 1) max = syms - 1; /* determine the number of bits in a code_t */ for (n = 0, word = 1; word; n++, word <<= 1) ; /* make sure that the calculation of most will not overflow */ if (max > n || (code_t)(syms - 2) >= (((code_t)0 - 1) >> (max - 1))) { fputs("abort: code length too long for internal types\n", stderr); return 1; } /* reject impossible code requests */ if ((code_t)(syms - 1) > ((code_t)1 << max) - 1) { fprintf(stderr, "%d symbols cannot be coded in %d bits\n", syms, max); return 1; } /* allocate code vector */ code = calloc(max + 1, sizeof(int)); if (code == NULL) { fputs("abort: unable to allocate enough memory\n", stderr); return 1; } /* determine size of saved results array, checking for overflows, allocate and clear the array (set all to zero with calloc()) */ if (syms == 2) /* iff max == 1 */ num = NULL; /* won't be saving any results */ else { size = syms >> 1; if (size > ((size_t)0 - 1) / (n = (syms - 1) >> 1) || (size *= n, size > ((size_t)0 - 1) / (n = max - 1)) || (size *= n, size > ((size_t)0 - 1) / sizeof(big_t)) || (num = calloc(size, sizeof(big_t))) == NULL) { fputs("abort: unable to allocate enough memory\n", stderr); cleanup(); return 1; } } /* count possible codes for all numbers of symbols, add up counts */ sum = 0; for (n = 2; n <= syms; n++) { got = count(n, 1, 2); sum += got; if (got == (big_t)0 - 1 || sum < got) { /* overflow */ fputs("abort: can't count that high!\n", stderr); cleanup(); return 1; } printf("%llu %d-codes\n", got, n); } printf("%llu total codes for 2 to %d symbols", sum, syms); if (max < syms - 1) printf(" (%d-bit length limit)\n", max); else puts(" (no length limit)"); /* allocate and clear done array for beenhere() */ if (syms == 2) done = NULL; else if (size > ((size_t)0 - 1) / sizeof(struct tab) || (done = calloc(size, sizeof(struct tab))) == NULL) { fputs("abort: unable to allocate enough memory\n", stderr); cleanup(); return 1; } /* find and show maximum inflate table usage */ if (root > max) /* reduce root to max length */ root = max; if ((code_t)syms < ((code_t)1 << (root + 1))) enough(syms); else puts("cannot handle minimum code lengths > root"); /* done */ cleanup(); return 0; } zlib-1.2.11.dfsg/examples/gzlog.c0000644000175000017500000012100713032130646016435 0ustar brooniebroonie/* * gzlog.c * Copyright (C) 2004, 2008, 2012, 2016 Mark Adler, all rights reserved * For conditions of distribution and use, see copyright notice in gzlog.h * version 2.2, 14 Aug 2012 */ /* gzlog provides a mechanism for frequently appending short strings to a gzip file that is efficient both in execution time and compression ratio. The strategy is to write the short strings in an uncompressed form to the end of the gzip file, only compressing when the amount of uncompressed data has reached a given threshold. gzlog also provides protection against interruptions in the process due to system crashes. The status of the operation is recorded in an extra field in the gzip file, and is only updated once the gzip file is brought to a valid state. The last data to be appended or compressed is saved in an auxiliary file, so that if the operation is interrupted, it can be completed the next time an append operation is attempted. gzlog maintains another auxiliary file with the last 32K of data from the compressed portion, which is preloaded for the compression of the subsequent data. This minimizes the impact to the compression ratio of appending. */ /* Operations Concept: Files (log name "foo"): foo.gz -- gzip file with the complete log foo.add -- last message to append or last data to compress foo.dict -- dictionary of the last 32K of data for next compression foo.temp -- temporary dictionary file for compression after this one foo.lock -- lock file for reading and writing the other files foo.repairs -- log file for log file recovery operations (not compressed) gzip file structure: - fixed-length (no file name) header with extra field (see below) - compressed data ending initially with empty stored block - uncompressed data filling out originally empty stored block and subsequent stored blocks as needed (16K max each) - gzip trailer - no junk at end (no other gzip streams) When appending data, the information in the first three items above plus the foo.add file are sufficient to recover an interrupted append operation. The extra field has the necessary information to restore the start of the last stored block and determine where to append the data in the foo.add file, as well as the crc and length of the gzip data before the append operation. The foo.add file is created before the gzip file is marked for append, and deleted after the gzip file is marked as complete. So if the append operation is interrupted, the data to add will still be there. If due to some external force, the foo.add file gets deleted between when the append operation was interrupted and when recovery is attempted, the gzip file will still be restored, but without the appended data. When compressing data, the information in the first two items above plus the foo.add file are sufficient to recover an interrupted compress operation. The extra field has the necessary information to find the end of the compressed data, and contains both the crc and length of just the compressed data and of the complete set of data including the contents of the foo.add file. Again, the foo.add file is maintained during the compress operation in case of an interruption. If in the unlikely event the foo.add file with the data to be compressed is missing due to some external force, a gzip file with just the previous compressed data will be reconstructed. In this case, all of the data that was to be compressed is lost (approximately one megabyte). This will not occur if all that happened was an interruption of the compress operation. The third state that is marked is the replacement of the old dictionary with the new dictionary after a compress operation. Once compression is complete, the gzip file is marked as being in the replace state. This completes the gzip file, so an interrupt after being so marked does not result in recompression. Then the dictionary file is replaced, and the gzip file is marked as completed. This state prevents the possibility of restarting compression with the wrong dictionary file. All three operations are wrapped by a lock/unlock procedure. In order to gain exclusive access to the log files, first a foo.lock file must be exclusively created. When all operations are complete, the lock is released by deleting the foo.lock file. If when attempting to create the lock file, it already exists and the modify time of the lock file is more than five minutes old (set by the PATIENCE define below), then the old lock file is considered stale and deleted, and the exclusive creation of the lock file is retried. To assure that there are no false assessments of the staleness of the lock file, the operations periodically touch the lock file to update the modified date. Following is the definition of the extra field with all of the information required to enable the above append and compress operations and their recovery if interrupted. Multi-byte values are stored little endian (consistent with the gzip format). File pointers are eight bytes long. The crc's and lengths for the gzip trailer are four bytes long. (Note that the length at the end of a gzip file is used for error checking only, and for large files is actually the length modulo 2^32.) The stored block length is two bytes long. The gzip extra field two-byte identification is "ap" for append. It is assumed that writing the extra field to the file is an "atomic" operation. That is, either all of the extra field is written to the file, or none of it is, if the operation is interrupted right at the point of updating the extra field. This is a reasonable assumption, since the extra field is within the first 52 bytes of the file, which is smaller than any expected block size for a mass storage device (usually 512 bytes or larger). Extra field (35 bytes): - Pointer to first stored block length -- this points to the two-byte length of the first stored block, which is followed by the two-byte, one's complement of that length. The stored block length is preceded by the three-bit header of the stored block, which is the actual start of the stored block in the deflate format. See the bit offset field below. - Pointer to the last stored block length. This is the same as above, but for the last stored block of the uncompressed data in the gzip file. Initially this is the same as the first stored block length pointer. When the stored block gets to 16K (see the MAX_STORE define), then a new stored block as added, at which point the last stored block length pointer is different from the first stored block length pointer. When they are different, the first bit of the last stored block header is eight bits, or one byte back from the block length. - Compressed data crc and length. This is the crc and length of the data that is in the compressed portion of the deflate stream. These are used only in the event that the foo.add file containing the data to compress is lost after a compress operation is interrupted. - Total data crc and length. This is the crc and length of all of the data stored in the gzip file, compressed and uncompressed. It is used to reconstruct the gzip trailer when compressing, as well as when recovering interrupted operations. - Final stored block length. This is used to quickly find where to append, and allows the restoration of the original final stored block state when an append operation is interrupted. - First stored block start as the number of bits back from the final stored block first length byte. This value is in the range of 3..10, and is stored as the low three bits of the final byte of the extra field after subtracting three (0..7). This allows the last-block bit of the stored block header to be updated when a new stored block is added, for the case when the first stored block and the last stored block are the same. (When they are different, the numbers of bits back is known to be eight.) This also allows for new compressed data to be appended to the old compressed data in the compress operation, overwriting the previous first stored block, or for the compressed data to be terminated and a valid gzip file reconstructed on the off chance that a compression operation was interrupted and the data to compress in the foo.add file was deleted. - The operation in process. This is the next two bits in the last byte (the bits under the mask 0x18). The are interpreted as 0: nothing in process, 1: append in process, 2: compress in process, 3: replace in process. - The top three bits of the last byte in the extra field are reserved and are currently set to zero. Main procedure: - Exclusively create the foo.lock file using the O_CREAT and O_EXCL modes of the system open() call. If the modify time of an existing lock file is more than PATIENCE seconds old, then the lock file is deleted and the exclusive create is retried. - Load the extra field from the foo.gz file, and see if an operation was in progress but not completed. If so, apply the recovery procedure below. - Perform the append procedure with the provided data. - If the uncompressed data in the foo.gz file is 1MB or more, apply the compress procedure. - Delete the foo.lock file. Append procedure: - Put what to append in the foo.add file so that the operation can be restarted if this procedure is interrupted. - Mark the foo.gz extra field with the append operation in progress. + Restore the original last-block bit and stored block length of the last stored block from the information in the extra field, in case a previous append operation was interrupted. - Append the provided data to the last stored block, creating new stored blocks as needed and updating the stored blocks last-block bits and lengths. - Update the crc and length with the new data, and write the gzip trailer. - Write over the extra field (with a single write operation) with the new pointers, lengths, and crc's, and mark the gzip file as not in process. Though there is still a foo.add file, it will be ignored since nothing is in process. If a foo.add file is leftover from a previously completed operation, it is truncated when writing new data to it. - Delete the foo.add file. Compress and replace procedures: - Read all of the uncompressed data in the stored blocks in foo.gz and write it to foo.add. Also write foo.temp with the last 32K of that data to provide a dictionary for the next invocation of this procedure. - Rewrite the extra field marking foo.gz with a compression in process. * If there is no data provided to compress (due to a missing foo.add file when recovering), reconstruct and truncate the foo.gz file to contain only the previous compressed data and proceed to the step after the next one. Otherwise ... - Compress the data with the dictionary in foo.dict, and write to the foo.gz file starting at the bit immediately following the last previously compressed block. If there is no foo.dict, proceed anyway with the compression at slightly reduced efficiency. (For the foo.dict file to be missing requires some external failure beyond simply the interruption of a compress operation.) During this process, the foo.lock file is periodically touched to assure that that file is not considered stale by another process before we're done. The deflation is terminated with a non-last empty static block (10 bits long), that is then located and written over by a last-bit-set empty stored block. - Append the crc and length of the data in the gzip file (previously calculated during the append operations). - Write over the extra field with the updated stored block offsets, bits back, crc's, and lengths, and mark foo.gz as in process for a replacement of the dictionary. @ Delete the foo.add file. - Replace foo.dict with foo.temp. - Write over the extra field, marking foo.gz as complete. Recovery procedure: - If not a replace recovery, read in the foo.add file, and provide that data to the appropriate recovery below. If there is no foo.add file, provide a zero data length to the recovery. In that case, the append recovery restores the foo.gz to the previous compressed + uncompressed data state. For the the compress recovery, a missing foo.add file results in foo.gz being restored to the previous compressed-only data state. - Append recovery: - Pick up append at + step above - Compress recovery: - Pick up compress at * step above - Replace recovery: - Pick up compress at @ step above - Log the repair with a date stamp in foo.repairs */ #include #include /* rename, fopen, fprintf, fclose */ #include /* malloc, free */ #include /* strlen, strrchr, strcpy, strncpy, strcmp */ #include /* open */ #include /* lseek, read, write, close, unlink, sleep, */ /* ftruncate, fsync */ #include /* errno */ #include /* time, ctime */ #include /* stat */ #include /* utimes */ #include "zlib.h" /* crc32 */ #include "gzlog.h" /* header for external access */ #define local static typedef unsigned int uint; typedef unsigned long ulong; /* Macro for debugging to deterministically force recovery operations */ #ifdef GZLOG_DEBUG #include /* longjmp */ jmp_buf gzlog_jump; /* where to go back to */ int gzlog_bail = 0; /* which point to bail at (1..8) */ int gzlog_count = -1; /* number of times through to wait */ # define BAIL(n) do { if (n == gzlog_bail && gzlog_count-- == 0) \ longjmp(gzlog_jump, gzlog_bail); } while (0) #else # define BAIL(n) #endif /* how old the lock file can be in seconds before considering it stale */ #define PATIENCE 300 /* maximum stored block size in Kbytes -- must be in 1..63 */ #define MAX_STORE 16 /* number of stored Kbytes to trigger compression (must be >= 32 to allow dictionary construction, and <= 204 * MAX_STORE, in order for >> 10 to discard the stored block headers contribution of five bytes each) */ #define TRIGGER 1024 /* size of a deflate dictionary (this cannot be changed) */ #define DICT 32768U /* values for the operation (2 bits) */ #define NO_OP 0 #define APPEND_OP 1 #define COMPRESS_OP 2 #define REPLACE_OP 3 /* macros to extract little-endian integers from an unsigned byte buffer */ #define PULL2(p) ((p)[0]+((uint)((p)[1])<<8)) #define PULL4(p) (PULL2(p)+((ulong)PULL2(p+2)<<16)) #define PULL8(p) (PULL4(p)+((off_t)PULL4(p+4)<<32)) /* macros to store integers into a byte buffer in little-endian order */ #define PUT2(p,a) do {(p)[0]=a;(p)[1]=(a)>>8;} while(0) #define PUT4(p,a) do {PUT2(p,a);PUT2(p+2,a>>16);} while(0) #define PUT8(p,a) do {PUT4(p,a);PUT4(p+4,a>>32);} while(0) /* internal structure for log information */ #define LOGID "\106\035\172" /* should be three non-zero characters */ struct log { char id[4]; /* contains LOGID to detect inadvertent overwrites */ int fd; /* file descriptor for .gz file, opened read/write */ char *path; /* allocated path, e.g. "/var/log/foo" or "foo" */ char *end; /* end of path, for appending suffices such as ".gz" */ off_t first; /* offset of first stored block first length byte */ int back; /* location of first block id in bits back from first */ uint stored; /* bytes currently in last stored block */ off_t last; /* offset of last stored block first length byte */ ulong ccrc; /* crc of compressed data */ ulong clen; /* length (modulo 2^32) of compressed data */ ulong tcrc; /* crc of total data */ ulong tlen; /* length (modulo 2^32) of total data */ time_t lock; /* last modify time of our lock file */ }; /* gzip header for gzlog */ local unsigned char log_gzhead[] = { 0x1f, 0x8b, /* magic gzip id */ 8, /* compression method is deflate */ 4, /* there is an extra field (no file name) */ 0, 0, 0, 0, /* no modification time provided */ 0, 0xff, /* no extra flags, no OS specified */ 39, 0, 'a', 'p', 35, 0 /* extra field with "ap" subfield */ /* 35 is EXTRA, 39 is EXTRA + 4 */ }; #define HEAD sizeof(log_gzhead) /* should be 16 */ /* initial gzip extra field content (52 == HEAD + EXTRA + 1) */ local unsigned char log_gzext[] = { 52, 0, 0, 0, 0, 0, 0, 0, /* offset of first stored block length */ 52, 0, 0, 0, 0, 0, 0, 0, /* offset of last stored block length */ 0, 0, 0, 0, 0, 0, 0, 0, /* compressed data crc and length */ 0, 0, 0, 0, 0, 0, 0, 0, /* total data crc and length */ 0, 0, /* final stored block data length */ 5 /* op is NO_OP, last bit 8 bits back */ }; #define EXTRA sizeof(log_gzext) /* should be 35 */ /* initial gzip data and trailer */ local unsigned char log_gzbody[] = { 1, 0, 0, 0xff, 0xff, /* empty stored block (last) */ 0, 0, 0, 0, /* crc */ 0, 0, 0, 0 /* uncompressed length */ }; #define BODY sizeof(log_gzbody) /* Exclusively create foo.lock in order to negotiate exclusive access to the foo.* files. If the modify time of an existing lock file is greater than PATIENCE seconds in the past, then consider the lock file to have been abandoned, delete it, and try the exclusive create again. Save the lock file modify time for verification of ownership. Return 0 on success, or -1 on failure, usually due to an access restriction or invalid path. Note that if stat() or unlink() fails, it may be due to another process noticing the abandoned lock file a smidge sooner and deleting it, so those are not flagged as an error. */ local int log_lock(struct log *log) { int fd; struct stat st; strcpy(log->end, ".lock"); while ((fd = open(log->path, O_CREAT | O_EXCL, 0644)) < 0) { if (errno != EEXIST) return -1; if (stat(log->path, &st) == 0 && time(NULL) - st.st_mtime > PATIENCE) { unlink(log->path); continue; } sleep(2); /* relinquish the CPU for two seconds while waiting */ } close(fd); if (stat(log->path, &st) == 0) log->lock = st.st_mtime; return 0; } /* Update the modify time of the lock file to now, in order to prevent another task from thinking that the lock is stale. Save the lock file modify time for verification of ownership. */ local void log_touch(struct log *log) { struct stat st; strcpy(log->end, ".lock"); utimes(log->path, NULL); if (stat(log->path, &st) == 0) log->lock = st.st_mtime; } /* Check the log file modify time against what is expected. Return true if this is not our lock. If it is our lock, touch it to keep it. */ local int log_check(struct log *log) { struct stat st; strcpy(log->end, ".lock"); if (stat(log->path, &st) || st.st_mtime != log->lock) return 1; log_touch(log); return 0; } /* Unlock a previously acquired lock, but only if it's ours. */ local void log_unlock(struct log *log) { if (log_check(log)) return; strcpy(log->end, ".lock"); unlink(log->path); log->lock = 0; } /* Check the gzip header and read in the extra field, filling in the values in the log structure. Return op on success or -1 if the gzip header was not as expected. op is the current operation in progress last written to the extra field. This assumes that the gzip file has already been opened, with the file descriptor log->fd. */ local int log_head(struct log *log) { int op; unsigned char buf[HEAD + EXTRA]; if (lseek(log->fd, 0, SEEK_SET) < 0 || read(log->fd, buf, HEAD + EXTRA) != HEAD + EXTRA || memcmp(buf, log_gzhead, HEAD)) { return -1; } log->first = PULL8(buf + HEAD); log->last = PULL8(buf + HEAD + 8); log->ccrc = PULL4(buf + HEAD + 16); log->clen = PULL4(buf + HEAD + 20); log->tcrc = PULL4(buf + HEAD + 24); log->tlen = PULL4(buf + HEAD + 28); log->stored = PULL2(buf + HEAD + 32); log->back = 3 + (buf[HEAD + 34] & 7); op = (buf[HEAD + 34] >> 3) & 3; return op; } /* Write over the extra field contents, marking the operation as op. Use fsync to assure that the device is written to, and in the requested order. This operation, and only this operation, is assumed to be atomic in order to assure that the log is recoverable in the event of an interruption at any point in the process. Return -1 if the write to foo.gz failed. */ local int log_mark(struct log *log, int op) { int ret; unsigned char ext[EXTRA]; PUT8(ext, log->first); PUT8(ext + 8, log->last); PUT4(ext + 16, log->ccrc); PUT4(ext + 20, log->clen); PUT4(ext + 24, log->tcrc); PUT4(ext + 28, log->tlen); PUT2(ext + 32, log->stored); ext[34] = log->back - 3 + (op << 3); fsync(log->fd); ret = lseek(log->fd, HEAD, SEEK_SET) < 0 || write(log->fd, ext, EXTRA) != EXTRA ? -1 : 0; fsync(log->fd); return ret; } /* Rewrite the last block header bits and subsequent zero bits to get to a byte boundary, setting the last block bit if last is true, and then write the remainder of the stored block header (length and one's complement). Leave the file pointer after the end of the last stored block data. Return -1 if there is a read or write failure on the foo.gz file */ local int log_last(struct log *log, int last) { int back, len, mask; unsigned char buf[6]; /* determine the locations of the bytes and bits to modify */ back = log->last == log->first ? log->back : 8; len = back > 8 ? 2 : 1; /* bytes back from log->last */ mask = 0x80 >> ((back - 1) & 7); /* mask for block last-bit */ /* get the byte to modify (one or two back) into buf[0] -- don't need to read the byte if the last-bit is eight bits back, since in that case the entire byte will be modified */ buf[0] = 0; if (back != 8 && (lseek(log->fd, log->last - len, SEEK_SET) < 0 || read(log->fd, buf, 1) != 1)) return -1; /* change the last-bit of the last stored block as requested -- note that all bits above the last-bit are set to zero, per the type bits of a stored block being 00 and per the convention that the bits to bring the stream to a byte boundary are also zeros */ buf[1] = 0; buf[2 - len] = (*buf & (mask - 1)) + (last ? mask : 0); /* write the modified stored block header and lengths, move the file pointer to after the last stored block data */ PUT2(buf + 2, log->stored); PUT2(buf + 4, log->stored ^ 0xffff); return lseek(log->fd, log->last - len, SEEK_SET) < 0 || write(log->fd, buf + 2 - len, len + 4) != len + 4 || lseek(log->fd, log->stored, SEEK_CUR) < 0 ? -1 : 0; } /* Append len bytes from data to the locked and open log file. len may be zero if recovering and no .add file was found. In that case, the previous state of the foo.gz file is restored. The data is appended uncompressed in deflate stored blocks. Return -1 if there was an error reading or writing the foo.gz file. */ local int log_append(struct log *log, unsigned char *data, size_t len) { uint put; off_t end; unsigned char buf[8]; /* set the last block last-bit and length, in case recovering an interrupted append, then position the file pointer to append to the block */ if (log_last(log, 1)) return -1; /* append, adding stored blocks and updating the offset of the last stored block as needed, and update the total crc and length */ while (len) { /* append as much as we can to the last block */ put = (MAX_STORE << 10) - log->stored; if (put > len) put = (uint)len; if (put) { if (write(log->fd, data, put) != put) return -1; BAIL(1); log->tcrc = crc32(log->tcrc, data, put); log->tlen += put; log->stored += put; data += put; len -= put; } /* if we need to, add a new empty stored block */ if (len) { /* mark current block as not last */ if (log_last(log, 0)) return -1; /* point to new, empty stored block */ log->last += 4 + log->stored + 1; log->stored = 0; } /* mark last block as last, update its length */ if (log_last(log, 1)) return -1; BAIL(2); } /* write the new crc and length trailer, and truncate just in case (could be recovering from partial append with a missing foo.add file) */ PUT4(buf, log->tcrc); PUT4(buf + 4, log->tlen); if (write(log->fd, buf, 8) != 8 || (end = lseek(log->fd, 0, SEEK_CUR)) < 0 || ftruncate(log->fd, end)) return -1; /* write the extra field, marking the log file as done, delete .add file */ if (log_mark(log, NO_OP)) return -1; strcpy(log->end, ".add"); unlink(log->path); /* ignore error, since may not exist */ return 0; } /* Replace the foo.dict file with the foo.temp file. Also delete the foo.add file, since the compress operation may have been interrupted before that was done. Returns 1 if memory could not be allocated, or -1 if reading or writing foo.gz fails, or if the rename fails for some reason other than foo.temp not existing. foo.temp not existing is a permitted error, since the replace operation may have been interrupted after the rename is done, but before foo.gz is marked as complete. */ local int log_replace(struct log *log) { int ret; char *dest; /* delete foo.add file */ strcpy(log->end, ".add"); unlink(log->path); /* ignore error, since may not exist */ BAIL(3); /* rename foo.name to foo.dict, replacing foo.dict if it exists */ strcpy(log->end, ".dict"); dest = malloc(strlen(log->path) + 1); if (dest == NULL) return -2; strcpy(dest, log->path); strcpy(log->end, ".temp"); ret = rename(log->path, dest); free(dest); if (ret && errno != ENOENT) return -1; BAIL(4); /* mark the foo.gz file as done */ return log_mark(log, NO_OP); } /* Compress the len bytes at data and append the compressed data to the foo.gz deflate data immediately after the previous compressed data. This overwrites the previous uncompressed data, which was stored in foo.add and is the data provided in data[0..len-1]. If this operation is interrupted, it picks up at the start of this routine, with the foo.add file read in again. If there is no data to compress (len == 0), then we simply terminate the foo.gz file after the previously compressed data, appending a final empty stored block and the gzip trailer. Return -1 if reading or writing the log.gz file failed, or -2 if there was a memory allocation failure. */ local int log_compress(struct log *log, unsigned char *data, size_t len) { int fd; uint got, max; ssize_t dict; off_t end; z_stream strm; unsigned char buf[DICT]; /* compress and append compressed data */ if (len) { /* set up for deflate, allocating memory */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; if (deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY) != Z_OK) return -2; /* read in dictionary (last 32K of data that was compressed) */ strcpy(log->end, ".dict"); fd = open(log->path, O_RDONLY, 0); if (fd >= 0) { dict = read(fd, buf, DICT); close(fd); if (dict < 0) { deflateEnd(&strm); return -1; } if (dict) deflateSetDictionary(&strm, buf, (uint)dict); } log_touch(log); /* prime deflate with last bits of previous block, position write pointer to write those bits and overwrite what follows */ if (lseek(log->fd, log->first - (log->back > 8 ? 2 : 1), SEEK_SET) < 0 || read(log->fd, buf, 1) != 1 || lseek(log->fd, -1, SEEK_CUR) < 0) { deflateEnd(&strm); return -1; } deflatePrime(&strm, (8 - log->back) & 7, *buf); /* compress, finishing with a partial non-last empty static block */ strm.next_in = data; max = (((uint)0 - 1) >> 1) + 1; /* in case int smaller than size_t */ do { strm.avail_in = len > max ? max : (uint)len; len -= strm.avail_in; do { strm.avail_out = DICT; strm.next_out = buf; deflate(&strm, len ? Z_NO_FLUSH : Z_PARTIAL_FLUSH); got = DICT - strm.avail_out; if (got && write(log->fd, buf, got) != got) { deflateEnd(&strm); return -1; } log_touch(log); } while (strm.avail_out == 0); } while (len); deflateEnd(&strm); BAIL(5); /* find start of empty static block -- scanning backwards the first one bit is the second bit of the block, if the last byte is zero, then we know the byte before that has a one in the top bit, since an empty static block is ten bits long */ if ((log->first = lseek(log->fd, -1, SEEK_CUR)) < 0 || read(log->fd, buf, 1) != 1) return -1; log->first++; if (*buf) { log->back = 1; while ((*buf & ((uint)1 << (8 - log->back++))) == 0) ; /* guaranteed to terminate, since *buf != 0 */ } else log->back = 10; /* update compressed crc and length */ log->ccrc = log->tcrc; log->clen = log->tlen; } else { /* no data to compress -- fix up existing gzip stream */ log->tcrc = log->ccrc; log->tlen = log->clen; } /* complete and truncate gzip stream */ log->last = log->first; log->stored = 0; PUT4(buf, log->tcrc); PUT4(buf + 4, log->tlen); if (log_last(log, 1) || write(log->fd, buf, 8) != 8 || (end = lseek(log->fd, 0, SEEK_CUR)) < 0 || ftruncate(log->fd, end)) return -1; BAIL(6); /* mark as being in the replace operation */ if (log_mark(log, REPLACE_OP)) return -1; /* execute the replace operation and mark the file as done */ return log_replace(log); } /* log a repair record to the .repairs file */ local void log_log(struct log *log, int op, char *record) { time_t now; FILE *rec; now = time(NULL); strcpy(log->end, ".repairs"); rec = fopen(log->path, "a"); if (rec == NULL) return; fprintf(rec, "%.24s %s recovery: %s\n", ctime(&now), op == APPEND_OP ? "append" : (op == COMPRESS_OP ? "compress" : "replace"), record); fclose(rec); return; } /* Recover the interrupted operation op. First read foo.add for recovering an append or compress operation. Return -1 if there was an error reading or writing foo.gz or reading an existing foo.add, or -2 if there was a memory allocation failure. */ local int log_recover(struct log *log, int op) { int fd, ret = 0; unsigned char *data = NULL; size_t len = 0; struct stat st; /* log recovery */ log_log(log, op, "start"); /* load foo.add file if expected and present */ if (op == APPEND_OP || op == COMPRESS_OP) { strcpy(log->end, ".add"); if (stat(log->path, &st) == 0 && st.st_size) { len = (size_t)(st.st_size); if ((off_t)len != st.st_size || (data = malloc(st.st_size)) == NULL) { log_log(log, op, "allocation failure"); return -2; } if ((fd = open(log->path, O_RDONLY, 0)) < 0) { log_log(log, op, ".add file read failure"); return -1; } ret = (size_t)read(fd, data, len) != len; close(fd); if (ret) { log_log(log, op, ".add file read failure"); return -1; } log_log(log, op, "loaded .add file"); } else log_log(log, op, "missing .add file!"); } /* recover the interrupted operation */ switch (op) { case APPEND_OP: ret = log_append(log, data, len); break; case COMPRESS_OP: ret = log_compress(log, data, len); break; case REPLACE_OP: ret = log_replace(log); } /* log status */ log_log(log, op, ret ? "failure" : "complete"); /* clean up */ if (data != NULL) free(data); return ret; } /* Close the foo.gz file (if open) and release the lock. */ local void log_close(struct log *log) { if (log->fd >= 0) close(log->fd); log->fd = -1; log_unlock(log); } /* Open foo.gz, verify the header, and load the extra field contents, after first creating the foo.lock file to gain exclusive access to the foo.* files. If foo.gz does not exist or is empty, then write the initial header, extra, and body content of an empty foo.gz log file. If there is an error creating the lock file due to access restrictions, or an error reading or writing the foo.gz file, or if the foo.gz file is not a proper log file for this object (e.g. not a gzip file or does not contain the expected extra field), then return true. If there is an error, the lock is released. Otherwise, the lock is left in place. */ local int log_open(struct log *log) { int op; /* release open file resource if left over -- can occur if lock lost between gzlog_open() and gzlog_write() */ if (log->fd >= 0) close(log->fd); log->fd = -1; /* negotiate exclusive access */ if (log_lock(log) < 0) return -1; /* open the log file, foo.gz */ strcpy(log->end, ".gz"); log->fd = open(log->path, O_RDWR | O_CREAT, 0644); if (log->fd < 0) { log_close(log); return -1; } /* if new, initialize foo.gz with an empty log, delete old dictionary */ if (lseek(log->fd, 0, SEEK_END) == 0) { if (write(log->fd, log_gzhead, HEAD) != HEAD || write(log->fd, log_gzext, EXTRA) != EXTRA || write(log->fd, log_gzbody, BODY) != BODY) { log_close(log); return -1; } strcpy(log->end, ".dict"); unlink(log->path); } /* verify log file and load extra field information */ if ((op = log_head(log)) < 0) { log_close(log); return -1; } /* check for interrupted process and if so, recover */ if (op != NO_OP && log_recover(log, op)) { log_close(log); return -1; } /* touch the lock file to prevent another process from grabbing it */ log_touch(log); return 0; } /* See gzlog.h for the description of the external methods below */ gzlog *gzlog_open(char *path) { size_t n; struct log *log; /* check arguments */ if (path == NULL || *path == 0) return NULL; /* allocate and initialize log structure */ log = malloc(sizeof(struct log)); if (log == NULL) return NULL; strcpy(log->id, LOGID); log->fd = -1; /* save path and end of path for name construction */ n = strlen(path); log->path = malloc(n + 9); /* allow for ".repairs" */ if (log->path == NULL) { free(log); return NULL; } strcpy(log->path, path); log->end = log->path + n; /* gain exclusive access and verify log file -- may perform a recovery operation if needed */ if (log_open(log)) { free(log->path); free(log); return NULL; } /* return pointer to log structure */ return log; } /* gzlog_compress() return values: 0: all good -1: file i/o error (usually access issue) -2: memory allocation failure -3: invalid log pointer argument */ int gzlog_compress(gzlog *logd) { int fd, ret; uint block; size_t len, next; unsigned char *data, buf[5]; struct log *log = logd; /* check arguments */ if (log == NULL || strcmp(log->id, LOGID)) return -3; /* see if we lost the lock -- if so get it again and reload the extra field information (it probably changed), recover last operation if necessary */ if (log_check(log) && log_open(log)) return -1; /* create space for uncompressed data */ len = ((size_t)(log->last - log->first) & ~(((size_t)1 << 10) - 1)) + log->stored; if ((data = malloc(len)) == NULL) return -2; /* do statement here is just a cheap trick for error handling */ do { /* read in the uncompressed data */ if (lseek(log->fd, log->first - 1, SEEK_SET) < 0) break; next = 0; while (next < len) { if (read(log->fd, buf, 5) != 5) break; block = PULL2(buf + 1); if (next + block > len || read(log->fd, (char *)data + next, block) != block) break; next += block; } if (lseek(log->fd, 0, SEEK_CUR) != log->last + 4 + log->stored) break; log_touch(log); /* write the uncompressed data to the .add file */ strcpy(log->end, ".add"); fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644); if (fd < 0) break; ret = (size_t)write(fd, data, len) != len; if (ret | close(fd)) break; log_touch(log); /* write the dictionary for the next compress to the .temp file */ strcpy(log->end, ".temp"); fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644); if (fd < 0) break; next = DICT > len ? len : DICT; ret = (size_t)write(fd, (char *)data + len - next, next) != next; if (ret | close(fd)) break; log_touch(log); /* roll back to compressed data, mark the compress in progress */ log->last = log->first; log->stored = 0; if (log_mark(log, COMPRESS_OP)) break; BAIL(7); /* compress and append the data (clears mark) */ ret = log_compress(log, data, len); free(data); return ret; } while (0); /* broke out of do above on i/o error */ free(data); return -1; } /* gzlog_write() return values: 0: all good -1: file i/o error (usually access issue) -2: memory allocation failure -3: invalid log pointer argument */ int gzlog_write(gzlog *logd, void *data, size_t len) { int fd, ret; struct log *log = logd; /* check arguments */ if (log == NULL || strcmp(log->id, LOGID)) return -3; if (data == NULL || len <= 0) return 0; /* see if we lost the lock -- if so get it again and reload the extra field information (it probably changed), recover last operation if necessary */ if (log_check(log) && log_open(log)) return -1; /* create and write .add file */ strcpy(log->end, ".add"); fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644); if (fd < 0) return -1; ret = (size_t)write(fd, data, len) != len; if (ret | close(fd)) return -1; log_touch(log); /* mark log file with append in progress */ if (log_mark(log, APPEND_OP)) return -1; BAIL(8); /* append data (clears mark) */ if (log_append(log, data, len)) return -1; /* check to see if it's time to compress -- if not, then done */ if (((log->last - log->first) >> 10) + (log->stored >> 10) < TRIGGER) return 0; /* time to compress */ return gzlog_compress(log); } /* gzlog_close() return values: 0: ok -3: invalid log pointer argument */ int gzlog_close(gzlog *logd) { struct log *log = logd; /* check arguments */ if (log == NULL || strcmp(log->id, LOGID)) return -3; /* close the log file and release the lock */ log_close(log); /* free structure and return */ if (log->path != NULL) free(log->path); strcpy(log->id, "bad"); free(log); return 0; } zlib-1.2.11.dfsg/examples/zran.c0000644000175000017500000003611613005413155016272 0ustar brooniebroonie/* zran.c -- example of zlib/gzip stream indexing and random access * Copyright (C) 2005, 2012 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h Version 1.1 29 Sep 2012 Mark Adler */ /* Version History: 1.0 29 May 2005 First version 1.1 29 Sep 2012 Fix memory reallocation error */ /* Illustrate the use of Z_BLOCK, inflatePrime(), and inflateSetDictionary() for random access of a compressed file. A file containing a zlib or gzip stream is provided on the command line. The compressed stream is decoded in its entirety, and an index built with access points about every SPAN bytes in the uncompressed output. The compressed file is left open, and can then be read randomly, having to decompress on the average SPAN/2 uncompressed bytes before getting to the desired block of data. An access point can be created at the start of any deflate block, by saving the starting file offset and bit of that block, and the 32K bytes of uncompressed data that precede that block. Also the uncompressed offset of that block is saved to provide a referece for locating a desired starting point in the uncompressed stream. build_index() works by decompressing the input zlib or gzip stream a block at a time, and at the end of each block deciding if enough uncompressed data has gone by to justify the creation of a new access point. If so, that point is saved in a data structure that grows as needed to accommodate the points. To use the index, an offset in the uncompressed data is provided, for which the latest access point at or preceding that offset is located in the index. The input file is positioned to the specified location in the index, and if necessary the first few bits of the compressed data is read from the file. inflate is initialized with those bits and the 32K of uncompressed data, and the decompression then proceeds until the desired offset in the file is reached. Then the decompression continues to read the desired uncompressed data from the file. Another approach would be to generate the index on demand. In that case, requests for random access reads from the compressed data would try to use the index, but if a read far enough past the end of the index is required, then further index entries would be generated and added. There is some fair bit of overhead to starting inflation for the random access, mainly copying the 32K byte dictionary. So if small pieces of the file are being accessed, it would make sense to implement a cache to hold some lookahead and avoid many calls to extract() for small lengths. Another way to build an index would be to use inflateCopy(). That would not be constrained to have access points at block boundaries, but requires more memory per access point, and also cannot be saved to file due to the use of pointers in the state. The approach here allows for storage of the index in a file. */ #include #include #include #include "zlib.h" #define local static #define SPAN 1048576L /* desired distance between access points */ #define WINSIZE 32768U /* sliding window size */ #define CHUNK 16384 /* file input buffer size */ /* access point entry */ struct point { off_t out; /* corresponding offset in uncompressed data */ off_t in; /* offset in input file of first full byte */ int bits; /* number of bits (1-7) from byte at in - 1, or 0 */ unsigned char window[WINSIZE]; /* preceding 32K of uncompressed data */ }; /* access point list */ struct access { int have; /* number of list entries filled in */ int size; /* number of list entries allocated */ struct point *list; /* allocated list */ }; /* Deallocate an index built by build_index() */ local void free_index(struct access *index) { if (index != NULL) { free(index->list); free(index); } } /* Add an entry to the access point list. If out of memory, deallocate the existing list and return NULL. */ local struct access *addpoint(struct access *index, int bits, off_t in, off_t out, unsigned left, unsigned char *window) { struct point *next; /* if list is empty, create it (start with eight points) */ if (index == NULL) { index = malloc(sizeof(struct access)); if (index == NULL) return NULL; index->list = malloc(sizeof(struct point) << 3); if (index->list == NULL) { free(index); return NULL; } index->size = 8; index->have = 0; } /* if list is full, make it bigger */ else if (index->have == index->size) { index->size <<= 1; next = realloc(index->list, sizeof(struct point) * index->size); if (next == NULL) { free_index(index); return NULL; } index->list = next; } /* fill in entry and increment how many we have */ next = index->list + index->have; next->bits = bits; next->in = in; next->out = out; if (left) memcpy(next->window, window + WINSIZE - left, left); if (left < WINSIZE) memcpy(next->window + left, window, WINSIZE - left); index->have++; /* return list, possibly reallocated */ return index; } /* Make one entire pass through the compressed stream and build an index, with access points about every span bytes of uncompressed output -- span is chosen to balance the speed of random access against the memory requirements of the list, about 32K bytes per access point. Note that data after the end of the first zlib or gzip stream in the file is ignored. build_index() returns the number of access points on success (>= 1), Z_MEM_ERROR for out of memory, Z_DATA_ERROR for an error in the input file, or Z_ERRNO for a file read error. On success, *built points to the resulting index. */ local int build_index(FILE *in, off_t span, struct access **built) { int ret; off_t totin, totout; /* our own total counters to avoid 4GB limit */ off_t last; /* totout value of last access point */ struct access *index; /* access points being generated */ z_stream strm; unsigned char input[CHUNK]; unsigned char window[WINSIZE]; /* initialize inflate */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, 47); /* automatic zlib or gzip decoding */ if (ret != Z_OK) return ret; /* inflate the input, maintain a sliding window, and build an index -- this also validates the integrity of the compressed data using the check information at the end of the gzip or zlib stream */ totin = totout = last = 0; index = NULL; /* will be allocated by first addpoint() */ strm.avail_out = 0; do { /* get some compressed data from input file */ strm.avail_in = fread(input, 1, CHUNK, in); if (ferror(in)) { ret = Z_ERRNO; goto build_index_error; } if (strm.avail_in == 0) { ret = Z_DATA_ERROR; goto build_index_error; } strm.next_in = input; /* process all of that, or until end of stream */ do { /* reset sliding window if necessary */ if (strm.avail_out == 0) { strm.avail_out = WINSIZE; strm.next_out = window; } /* inflate until out of input, output, or at end of block -- update the total input and output counters */ totin += strm.avail_in; totout += strm.avail_out; ret = inflate(&strm, Z_BLOCK); /* return at end of block */ totin -= strm.avail_in; totout -= strm.avail_out; if (ret == Z_NEED_DICT) ret = Z_DATA_ERROR; if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR) goto build_index_error; if (ret == Z_STREAM_END) break; /* if at end of block, consider adding an index entry (note that if data_type indicates an end-of-block, then all of the uncompressed data from that block has been delivered, and none of the compressed data after that block has been consumed, except for up to seven bits) -- the totout == 0 provides an entry point after the zlib or gzip header, and assures that the index always has at least one access point; we avoid creating an access point after the last block by checking bit 6 of data_type */ if ((strm.data_type & 128) && !(strm.data_type & 64) && (totout == 0 || totout - last > span)) { index = addpoint(index, strm.data_type & 7, totin, totout, strm.avail_out, window); if (index == NULL) { ret = Z_MEM_ERROR; goto build_index_error; } last = totout; } } while (strm.avail_in != 0); } while (ret != Z_STREAM_END); /* clean up and return index (release unused entries in list) */ (void)inflateEnd(&strm); index->list = realloc(index->list, sizeof(struct point) * index->have); index->size = index->have; *built = index; return index->size; /* return error */ build_index_error: (void)inflateEnd(&strm); if (index != NULL) free_index(index); return ret; } /* Use the index to read len bytes from offset into buf, return bytes read or negative for error (Z_DATA_ERROR or Z_MEM_ERROR). If data is requested past the end of the uncompressed data, then extract() will return a value less than len, indicating how much as actually read into buf. This function should not return a data error unless the file was modified since the index was generated. extract() may also return Z_ERRNO if there is an error on reading or seeking the input file. */ local int extract(FILE *in, struct access *index, off_t offset, unsigned char *buf, int len) { int ret, skip; z_stream strm; struct point *here; unsigned char input[CHUNK]; unsigned char discard[WINSIZE]; /* proceed only if something reasonable to do */ if (len < 0) return 0; /* find where in stream to start */ here = index->list; ret = index->have; while (--ret && here[1].out <= offset) here++; /* initialize file and inflate state to start there */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, -15); /* raw inflate */ if (ret != Z_OK) return ret; ret = fseeko(in, here->in - (here->bits ? 1 : 0), SEEK_SET); if (ret == -1) goto extract_ret; if (here->bits) { ret = getc(in); if (ret == -1) { ret = ferror(in) ? Z_ERRNO : Z_DATA_ERROR; goto extract_ret; } (void)inflatePrime(&strm, here->bits, ret >> (8 - here->bits)); } (void)inflateSetDictionary(&strm, here->window, WINSIZE); /* skip uncompressed bytes until offset reached, then satisfy request */ offset -= here->out; strm.avail_in = 0; skip = 1; /* while skipping to offset */ do { /* define where to put uncompressed data, and how much */ if (offset == 0 && skip) { /* at offset now */ strm.avail_out = len; strm.next_out = buf; skip = 0; /* only do this once */ } if (offset > WINSIZE) { /* skip WINSIZE bytes */ strm.avail_out = WINSIZE; strm.next_out = discard; offset -= WINSIZE; } else if (offset != 0) { /* last skip */ strm.avail_out = (unsigned)offset; strm.next_out = discard; offset = 0; } /* uncompress until avail_out filled, or end of stream */ do { if (strm.avail_in == 0) { strm.avail_in = fread(input, 1, CHUNK, in); if (ferror(in)) { ret = Z_ERRNO; goto extract_ret; } if (strm.avail_in == 0) { ret = Z_DATA_ERROR; goto extract_ret; } strm.next_in = input; } ret = inflate(&strm, Z_NO_FLUSH); /* normal inflate */ if (ret == Z_NEED_DICT) ret = Z_DATA_ERROR; if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR) goto extract_ret; if (ret == Z_STREAM_END) break; } while (strm.avail_out != 0); /* if reach end of stream, then don't keep trying to get more */ if (ret == Z_STREAM_END) break; /* do until offset reached and requested data read, or stream ends */ } while (skip); /* compute number of uncompressed bytes read after offset */ ret = skip ? 0 : len - strm.avail_out; /* clean up and return bytes read or error */ extract_ret: (void)inflateEnd(&strm); return ret; } /* Demonstrate the use of build_index() and extract() by processing the file provided on the command line, and the extracting 16K from about 2/3rds of the way through the uncompressed output, and writing that to stdout. */ int main(int argc, char **argv) { int len; off_t offset; FILE *in; struct access *index = NULL; unsigned char buf[CHUNK]; /* open input file */ if (argc != 2) { fprintf(stderr, "usage: zran file.gz\n"); return 1; } in = fopen(argv[1], "rb"); if (in == NULL) { fprintf(stderr, "zran: could not open %s for reading\n", argv[1]); return 1; } /* build index */ len = build_index(in, SPAN, &index); if (len < 0) { fclose(in); switch (len) { case Z_MEM_ERROR: fprintf(stderr, "zran: out of memory\n"); break; case Z_DATA_ERROR: fprintf(stderr, "zran: compressed data error in %s\n", argv[1]); break; case Z_ERRNO: fprintf(stderr, "zran: read error on %s\n", argv[1]); break; default: fprintf(stderr, "zran: error %d while building index\n", len); } return 1; } fprintf(stderr, "zran: built index with %d access points\n", len); /* use index by reading some bytes from an arbitrary offset */ offset = (index->list[index->have - 1].out << 1) / 3; len = extract(in, index, offset, buf, CHUNK); if (len < 0) fprintf(stderr, "zran: extraction failed: %s error\n", len == Z_MEM_ERROR ? "out of memory" : "input corrupted"); else { fwrite(buf, 1, len, stdout); fprintf(stderr, "zran: extracted %d bytes at %llu\n", len, offset); } /* clean up and exit */ free_index(index); fclose(in); return 0; } zlib-1.2.11.dfsg/examples/zlib_how.html0000644000175000017500000007220010347111270017650 0ustar brooniebroonie zlib Usage Example

zlib Usage Example

We often get questions about how the deflate() and inflate() functions should be used. Users wonder when they should provide more input, when they should use more output, what to do with a Z_BUF_ERROR, how to make sure the process terminates properly, and so on. So for those who have read zlib.h (a few times), and would like further edification, below is an annotated example in C of simple routines to compress and decompress from an input file to an output file using deflate() and inflate() respectively. The annotations are interspersed between lines of the code. So please read between the lines. We hope this helps explain some of the intricacies of zlib.

Without further adieu, here is the program zpipe.c: 


/* zpipe.c: example of proper use of zlib's inflate() and deflate()
   Not copyrighted -- provided to the public domain
   Version 1.4  11 December 2005  Mark Adler */

/* Version history:
   1.0  30 Oct 2004  First version
   1.1   8 Nov 2004  Add void casting for unused return values
                     Use switch statement for inflate() return values
   1.2   9 Nov 2004  Add assertions to document zlib guarantees
   1.3   6 Apr 2005  Remove incorrect assertion in inf()
   1.4  11 Dec 2005  Add hack to avoid MSDOS end-of-line conversions
                     Avoid some compiler warnings for input and output buffers
 */
We now include the header files for the required definitions. From stdio.h we use fopen(), fread(), fwrite(), feof(), ferror(), and fclose() for file i/o, and fputs() for error messages. From string.h we use strcmp() for command line argument processing. From assert.h we use the assert() macro. From zlib.h we use the basic compression functions deflateInit(), deflate(), and deflateEnd(), and the basic decompression functions inflateInit(), inflate(), and inflateEnd(). 

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "zlib.h"
This is an ugly hack required to avoid corruption of the input and output data on Windows/MS-DOS systems. Without this, those systems would assume that the input and output files are text, and try to convert the end-of-line characters from one standard to another. That would corrupt binary data, and in particular would render the compressed data unusable. This sets the input and output to binary which suppresses the end-of-line conversions. SET_BINARY_MODE() will be used later on stdin and stdout, at the beginning of main(). 

#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include <fcntl.h>
#  include <io.h>
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif
CHUNK is simply the buffer size for feeding data to and pulling data from the zlib routines. Larger buffer sizes would be more efficient, especially for inflate(). If the memory is available, buffers sizes on the order of 128K or 256K bytes should be used. 

#define CHUNK 16384
The def() routine compresses data from an input file to an output file. The output data will be in the zlib format, which is different from the gzip or zip formats. The zlib format has a very small header of only two bytes to identify it as a zlib stream and to provide decoding information, and a four-byte trailer with a fast check value to verify the integrity of the uncompressed data after decoding. 

/* Compress from file source to file dest until EOF on source.
   def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_STREAM_ERROR if an invalid compression
   level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
   version of the library linked do not match, or Z_ERRNO if there is
   an error reading or writing the files. */
int def(FILE *source, FILE *dest, int level)
{
Here are the local variables for def(). ret will be used for zlib return codes. flush will keep track of the current flushing state for deflate(), which is either no flushing, or flush to completion after the end of the input file is reached. have is the amount of data returned from deflate(). The strm structure is used to pass information to and from the zlib routines, and to maintain the deflate() state. in and out are the input and output buffers for deflate(). 

    int ret, flush;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];
The first thing we do is to initialize the zlib state for compression using deflateInit(). This must be done before the first use of deflate(). The zalloc, zfree, and opaque fields in the strm structure must be initialized before calling deflateInit(). Here they are set to the zlib constant Z_NULL to request that zlib use the default memory allocation routines. An application may also choose to provide custom memory allocation routines here. deflateInit() will allocate on the order of 256K bytes for the internal state. (See zlib Technical Details.)

deflateInit() is called with a pointer to the structure to be initialized and the compression level, which is an integer in the range of -1 to 9. Lower compression levels result in faster execution, but less compression. Higher levels result in greater compression, but slower execution. The zlib constant Z_DEFAULT_COMPRESSION, equal to -1, provides a good compromise between compression and speed and is equivalent to level 6. Level 0 actually does no compression at all, and in fact expands the data slightly to produce the zlib format (it is not a byte-for-byte copy of the input). More advanced applications of zlib may use deflateInit2() here instead. Such an application may want to reduce how much memory will be used, at some price in compression. Or it may need to request a gzip header and trailer instead of a zlib header and trailer, or raw encoding with no header or trailer at all.

We must check the return value of deflateInit() against the zlib constant Z_OK to make sure that it was able to allocate memory for the internal state, and that the provided arguments were valid. deflateInit() will also check that the version of zlib that the zlib.h file came from matches the version of zlib actually linked with the program. This is especially important for environments in which zlib is a shared library.

Note that an application can initialize multiple, independent zlib streams, which can operate in parallel. The state information maintained in the structure allows the zlib routines to be reentrant. 


    /* allocate deflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    ret = deflateInit(&strm, level);
    if (ret != Z_OK)
        return ret;
With the pleasantries out of the way, now we can get down to business. The outer do-loop reads all of the input file and exits at the bottom of the loop once end-of-file is reached. This loop contains the only call of deflate(). So we must make sure that all of the input data has been processed and that all of the output data has been generated and consumed before we fall out of the loop at the bottom. 

    /* compress until end of file */
    do {
We start off by reading data from the input file. The number of bytes read is put directly into avail_in, and a pointer to those bytes is put into next_in. We also check to see if end-of-file on the input has been reached. If we are at the end of file, then flush is set to the zlib constant Z_FINISH, which is later passed to deflate() to indicate that this is the last chunk of input data to compress. We need to use feof() to check for end-of-file as opposed to seeing if fewer than CHUNK bytes have been read. The reason is that if the input file length is an exact multiple of CHUNK, we will miss the fact that we got to the end-of-file, and not know to tell deflate() to finish up the compressed stream. If we are not yet at the end of the input, then the zlib constant Z_NO_FLUSH will be passed to deflate to indicate that we are still in the middle of the uncompressed data.

If there is an error in reading from the input file, the process is aborted with deflateEnd() being called to free the allocated zlib state before returning the error. We wouldn't want a memory leak, now would we? deflateEnd() can be called at any time after the state has been initialized. Once that's done, deflateInit() (or deflateInit2()) would have to be called to start a new compression process. There is no point here in checking the deflateEnd() return code. The deallocation can't fail. 


        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)deflateEnd(&strm);
            return Z_ERRNO;
        }
        flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
        strm.next_in = in;
The inner do-loop passes our chunk of input data to deflate(), and then keeps calling deflate() until it is done producing output. Once there is no more new output, deflate() is guaranteed to have consumed all of the input, i.e., avail_in will be zero. 

        /* run deflate() on input until output buffer not full, finish
           compression if all of source has been read in */
        do {
Output space is provided to deflate() by setting avail_out to the number of available output bytes and next_out to a pointer to that space. 

            strm.avail_out = CHUNK;
            strm.next_out = out;
Now we call the compression engine itself, deflate(). It takes as many of the avail_in bytes at next_in as it can process, and writes as many as avail_out bytes to next_out. Those counters and pointers are then updated past the input data consumed and the output data written. It is the amount of output space available that may limit how much input is consumed. Hence the inner loop to make sure that all of the input is consumed by providing more output space each time. Since avail_in and next_in are updated by deflate(), we don't have to mess with those between deflate() calls until it's all used up.

The parameters to deflate() are a pointer to the strm structure containing the input and output information and the internal compression engine state, and a parameter indicating whether and how to flush data to the output. Normally deflate will consume several K bytes of input data before producing any output (except for the header), in order to accumulate statistics on the data for optimum compression. It will then put out a burst of compressed data, and proceed to consume more input before the next burst. Eventually, deflate() must be told to terminate the stream, complete the compression with provided input data, and write out the trailer check value. deflate() will continue to compress normally as long as the flush parameter is Z_NO_FLUSH. Once the Z_FINISH parameter is provided, deflate() will begin to complete the compressed output stream. However depending on how much output space is provided, deflate() may have to be called several times until it has provided the complete compressed stream, even after it has consumed all of the input. The flush parameter must continue to be Z_FINISH for those subsequent calls.

There are other values of the flush parameter that are used in more advanced applications. You can force deflate() to produce a burst of output that encodes all of the input data provided so far, even if it wouldn't have otherwise, for example to control data latency on a link with compressed data. You can also ask that deflate() do that as well as erase any history up to that point so that what follows can be decompressed independently, for example for random access applications. Both requests will degrade compression by an amount depending on how often such requests are made.

deflate() has a return value that can indicate errors, yet we do not check it here. Why not? Well, it turns out that deflate() can do no wrong here. Let's go through deflate()'s return values and dispense with them one by one. The possible values are Z_OK, Z_STREAM_END, Z_STREAM_ERROR, or Z_BUF_ERROR. Z_OK is, well, ok. Z_STREAM_END is also ok and will be returned for the last call of deflate(). This is already guaranteed by calling deflate() with Z_FINISH until it has no more output. Z_STREAM_ERROR is only possible if the stream is not initialized properly, but we did initialize it properly. There is no harm in checking for Z_STREAM_ERROR here, for example to check for the possibility that some other part of the application inadvertently clobbered the memory containing the zlib state. Z_BUF_ERROR will be explained further below, but suffice it to say that this is simply an indication that deflate() could not consume more input or produce more output. deflate() can be called again with more output space or more available input, which it will be in this code. 


            ret = deflate(&strm, flush);    /* no bad return value */
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
Now we compute how much output deflate() provided on the last call, which is the difference between how much space was provided before the call, and how much output space is still available after the call. Then that data, if any, is written to the output file. We can then reuse the output buffer for the next call of deflate(). Again if there is a file i/o error, we call deflateEnd() before returning to avoid a memory leak. 

            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)deflateEnd(&strm);
                return Z_ERRNO;
            }
The inner do-loop is repeated until the last deflate() call fails to fill the provided output buffer. Then we know that deflate() has done as much as it can with the provided input, and that all of that input has been consumed. We can then fall out of this loop and reuse the input buffer.

The way we tell that deflate() has no more output is by seeing that it did not fill the output buffer, leaving avail_out greater than zero. However suppose that deflate() has no more output, but just so happened to exactly fill the output buffer! avail_out is zero, and we can't tell that deflate() has done all it can. As far as we know, deflate() has more output for us. So we call it again. But now deflate() produces no output at all, and avail_out remains unchanged as CHUNK. That deflate() call wasn't able to do anything, either consume input or produce output, and so it returns Z_BUF_ERROR. (See, I told you I'd cover this later.) However this is not a problem at all. Now we finally have the desired indication that deflate() is really done, and so we drop out of the inner loop to provide more input to deflate().

With flush set to Z_FINISH, this final set of deflate() calls will complete the output stream. Once that is done, subsequent calls of deflate() would return Z_STREAM_ERROR if the flush parameter is not Z_FINISH, and do no more processing until the state is reinitialized.

Some applications of zlib have two loops that call deflate() instead of the single inner loop we have here. The first loop would call without flushing and feed all of the data to deflate(). The second loop would call deflate() with no more data and the Z_FINISH parameter to complete the process. As you can see from this example, that can be avoided by simply keeping track of the current flush state. 


        } while (strm.avail_out == 0);
        assert(strm.avail_in == 0);     /* all input will be used */
Now we check to see if we have already processed all of the input file. That information was saved in the flush variable, so we see if that was set to Z_FINISH. If so, then we're done and we fall out of the outer loop. We're guaranteed to get Z_STREAM_END from the last deflate() call, since we ran it until the last chunk of input was consumed and all of the output was generated. 

        /* done when last data in file processed */
    } while (flush != Z_FINISH);
    assert(ret == Z_STREAM_END);        /* stream will be complete */
The process is complete, but we still need to deallocate the state to avoid a memory leak (or rather more like a memory hemorrhage if you didn't do this). Then finally we can return with a happy return value. 

    /* clean up and return */
    (void)deflateEnd(&strm);
    return Z_OK;
}
Now we do the same thing for decompression in the inf() routine. inf() decompresses what is hopefully a valid zlib stream from the input file and writes the uncompressed data to the output file. Much of the discussion above for def() applies to inf() as well, so the discussion here will focus on the differences between the two. 

/* Decompress from file source to file dest until stream ends or EOF.
   inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_DATA_ERROR if the deflate data is
   invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
   the version of the library linked do not match, or Z_ERRNO if there
   is an error reading or writing the files. */
int inf(FILE *source, FILE *dest)
{
The local variables have the same functionality as they do for def(). The only difference is that there is no flush variable, since inflate() can tell from the zlib stream itself when the stream is complete. 

    int ret;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];
The initialization of the state is the same, except that there is no compression level, of course, and two more elements of the structure are initialized. avail_in and next_in must be initialized before calling inflateInit(). This is because the application has the option to provide the start of the zlib stream in order for inflateInit() to have access to information about the compression method to aid in memory allocation. In the current implementation of zlib (up through versions 1.2.x), the method-dependent memory allocations are deferred to the first call of inflate() anyway. However those fields must be initialized since later versions of zlib that provide more compression methods may take advantage of this interface. In any case, no decompression is performed by inflateInit(), so the avail_out and next_out fields do not need to be initialized before calling.

Here avail_in is set to zero and next_in is set to Z_NULL to indicate that no input data is being provided. 


    /* allocate inflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit(&strm);
    if (ret != Z_OK)
        return ret;
The outer do-loop decompresses input until inflate() indicates that it has reached the end of the compressed data and has produced all of the uncompressed output. This is in contrast to def() which processes all of the input file. If end-of-file is reached before the compressed data self-terminates, then the compressed data is incomplete and an error is returned. 

    /* decompress until deflate stream ends or end of file */
    do {
We read input data and set the strm structure accordingly. If we've reached the end of the input file, then we leave the outer loop and report an error, since the compressed data is incomplete. Note that we may read more data than is eventually consumed by inflate(), if the input file continues past the zlib stream. For applications where zlib streams are embedded in other data, this routine would need to be modified to return the unused data, or at least indicate how much of the input data was not used, so the application would know where to pick up after the zlib stream. 

        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)inflateEnd(&strm);
            return Z_ERRNO;
        }
        if (strm.avail_in == 0)
            break;
        strm.next_in = in;
The inner do-loop has the same function it did in def(), which is to keep calling inflate() until has generated all of the output it can with the provided input. 

        /* run inflate() on input until output buffer not full */
        do {
Just like in def(), the same output space is provided for each call of inflate(). 

            strm.avail_out = CHUNK;
            strm.next_out = out;
Now we run the decompression engine itself. There is no need to adjust the flush parameter, since the zlib format is self-terminating. The main difference here is that there are return values that we need to pay attention to. Z_DATA_ERROR indicates that inflate() detected an error in the zlib compressed data format, which means that either the data is not a zlib stream to begin with, or that the data was corrupted somewhere along the way since it was compressed. The other error to be processed is Z_MEM_ERROR, which can occur since memory allocation is deferred until inflate() needs it, unlike deflate(), whose memory is allocated at the start by deflateInit().

Advanced applications may use deflateSetDictionary() to prime deflate() with a set of likely data to improve the first 32K or so of compression. This is noted in the zlib header, so inflate() requests that that dictionary be provided before it can start to decompress. Without the dictionary, correct decompression is not possible. For this routine, we have no idea what the dictionary is, so the Z_NEED_DICT indication is converted to a Z_DATA_ERROR.

inflate() can also return Z_STREAM_ERROR, which should not be possible here, but could be checked for as noted above for def(). Z_BUF_ERROR does not need to be checked for here, for the same reasons noted for def(). Z_STREAM_END will be checked for later. 


            ret = inflate(&strm, Z_NO_FLUSH);
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
            switch (ret) {
            case Z_NEED_DICT:
                ret = Z_DATA_ERROR;     /* and fall through */
            case Z_DATA_ERROR:
            case Z_MEM_ERROR:
                (void)inflateEnd(&strm);
                return ret;
            }
The output of inflate() is handled identically to that of deflate(). 

            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)inflateEnd(&strm);
                return Z_ERRNO;
            }
The inner do-loop ends when inflate() has no more output as indicated by not filling the output buffer, just as for deflate(). In this case, we cannot assert that strm.avail_in will be zero, since the deflate stream may end before the file does. 

        } while (strm.avail_out == 0);
The outer do-loop ends when inflate() reports that it has reached the end of the input zlib stream, has completed the decompression and integrity check, and has provided all of the output. This is indicated by the inflate() return value Z_STREAM_END. The inner loop is guaranteed to leave ret equal to Z_STREAM_END if the last chunk of the input file read contained the end of the zlib stream. So if the return value is not Z_STREAM_END, the loop continues to read more input. 

        /* done when inflate() says it's done */
    } while (ret != Z_STREAM_END);
At this point, decompression successfully completed, or we broke out of the loop due to no more data being available from the input file. If the last inflate() return value is not Z_STREAM_END, then the zlib stream was incomplete and a data error is returned. Otherwise, we return with a happy return value. Of course, inflateEnd() is called first to avoid a memory leak. 

    /* clean up and return */
    (void)inflateEnd(&strm);
    return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
}
That ends the routines that directly use zlib. The following routines make this a command-line program by running data through the above routines from stdin to stdout, and handling any errors reported by def() or inf().

zerr() is used to interpret the possible error codes from def() and inf(), as detailed in their comments above, and print out an error message. Note that these are only a subset of the possible return values from deflate() and inflate(). 


/* report a zlib or i/o error */
void zerr(int ret)
{
    fputs("zpipe: ", stderr);
    switch (ret) {
    case Z_ERRNO:
        if (ferror(stdin))
            fputs("error reading stdin\n", stderr);
        if (ferror(stdout))
            fputs("error writing stdout\n", stderr);
        break;
    case Z_STREAM_ERROR:
        fputs("invalid compression level\n", stderr);
        break;
    case Z_DATA_ERROR:
        fputs("invalid or incomplete deflate data\n", stderr);
        break;
    case Z_MEM_ERROR:
        fputs("out of memory\n", stderr);
        break;
    case Z_VERSION_ERROR:
        fputs("zlib version mismatch!\n", stderr);
    }
}
Here is the main() routine used to test def() and inf(). The zpipe command is simply a compression pipe from stdin to stdout, if no arguments are given, or it is a decompression pipe if zpipe -d is used. If any other arguments are provided, no compression or decompression is performed. Instead a usage message is displayed. Examples are zpipe < foo.txt > foo.txt.z to compress, and zpipe -d < foo.txt.z > foo.txt to decompress. 

/* compress or decompress from stdin to stdout */
int main(int argc, char **argv)
{
    int ret;

    /* avoid end-of-line conversions */
    SET_BINARY_MODE(stdin);
    SET_BINARY_MODE(stdout);

    /* do compression if no arguments */
    if (argc == 1) {
        ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* do decompression if -d specified */
    else if (argc == 2 && strcmp(argv[1], "-d") == 0) {
        ret = inf(stdin, stdout);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* otherwise, report usage */
    else {
        fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr);
        return 1;
    }
}
Copyright (c) 2004, 2005 by Mark Adler
Last modified 11 December 2005 zlib-1.2.11.dfsg/examples/fitblk.c0000644000175000017500000002062210253151740016567 0ustar brooniebroonie/* fitblk.c: example of fitting compressed output to a specified size Not copyrighted -- provided to the public domain Version 1.1 25 November 2004 Mark Adler */ /* Version history: 1.0 24 Nov 2004 First version 1.1 25 Nov 2004 Change deflateInit2() to deflateInit() Use fixed-size, stack-allocated raw buffers Simplify code moving compression to subroutines Use assert() for internal errors Add detailed description of approach */ /* Approach to just fitting a requested compressed size: fitblk performs three compression passes on a portion of the input data in order to determine how much of that input will compress to nearly the requested output block size. The first pass generates enough deflate blocks to produce output to fill the requested output size plus a specfied excess amount (see the EXCESS define below). The last deflate block may go quite a bit past that, but is discarded. The second pass decompresses and recompresses just the compressed data that fit in the requested plus excess sized buffer. The deflate process is terminated after that amount of input, which is less than the amount consumed on the first pass. The last deflate block of the result will be of a comparable size to the final product, so that the header for that deflate block and the compression ratio for that block will be about the same as in the final product. The third compression pass decompresses the result of the second step, but only the compressed data up to the requested size minus an amount to allow the compressed stream to complete (see the MARGIN define below). That will result in a final compressed stream whose length is less than or equal to the requested size. Assuming sufficient input and a requested size greater than a few hundred bytes, the shortfall will typically be less than ten bytes. If the input is short enough that the first compression completes before filling the requested output size, then that compressed stream is return with no recompression. EXCESS is chosen to be just greater than the shortfall seen in a two pass approach similar to the above. That shortfall is due to the last deflate block compressing more efficiently with a smaller header on the second pass. EXCESS is set to be large enough so that there is enough uncompressed data for the second pass to fill out the requested size, and small enough so that the final deflate block of the second pass will be close in size to the final deflate block of the third and final pass. MARGIN is chosen to be just large enough to assure that the final compression has enough room to complete in all cases. */ #include #include #include #include "zlib.h" #define local static /* print nastygram and leave */ local void quit(char *why) { fprintf(stderr, "fitblk abort: %s\n", why); exit(1); } #define RAWLEN 4096 /* intermediate uncompressed buffer size */ /* compress from file to def until provided buffer is full or end of input reached; return last deflate() return value, or Z_ERRNO if there was read error on the file */ local int partcompress(FILE *in, z_streamp def) { int ret, flush; unsigned char raw[RAWLEN]; flush = Z_NO_FLUSH; do { def->avail_in = fread(raw, 1, RAWLEN, in); if (ferror(in)) return Z_ERRNO; def->next_in = raw; if (feof(in)) flush = Z_FINISH; ret = deflate(def, flush); assert(ret != Z_STREAM_ERROR); } while (def->avail_out != 0 && flush == Z_NO_FLUSH); return ret; } /* recompress from inf's input to def's output; the input for inf and the output for def are set in those structures before calling; return last deflate() return value, or Z_MEM_ERROR if inflate() was not able to allocate enough memory when it needed to */ local int recompress(z_streamp inf, z_streamp def) { int ret, flush; unsigned char raw[RAWLEN]; flush = Z_NO_FLUSH; do { /* decompress */ inf->avail_out = RAWLEN; inf->next_out = raw; ret = inflate(inf, Z_NO_FLUSH); assert(ret != Z_STREAM_ERROR && ret != Z_DATA_ERROR && ret != Z_NEED_DICT); if (ret == Z_MEM_ERROR) return ret; /* compress what was decompresed until done or no room */ def->avail_in = RAWLEN - inf->avail_out; def->next_in = raw; if (inf->avail_out != 0) flush = Z_FINISH; ret = deflate(def, flush); assert(ret != Z_STREAM_ERROR); } while (ret != Z_STREAM_END && def->avail_out != 0); return ret; } #define EXCESS 256 /* empirically determined stream overage */ #define MARGIN 8 /* amount to back off for completion */ /* compress from stdin to fixed-size block on stdout */ int main(int argc, char **argv) { int ret; /* return code */ unsigned size; /* requested fixed output block size */ unsigned have; /* bytes written by deflate() call */ unsigned char *blk; /* intermediate and final stream */ unsigned char *tmp; /* close to desired size stream */ z_stream def, inf; /* zlib deflate and inflate states */ /* get requested output size */ if (argc != 2) quit("need one argument: size of output block"); ret = strtol(argv[1], argv + 1, 10); if (argv[1][0] != 0) quit("argument must be a number"); if (ret < 8) /* 8 is minimum zlib stream size */ quit("need positive size of 8 or greater"); size = (unsigned)ret; /* allocate memory for buffers and compression engine */ blk = malloc(size + EXCESS); def.zalloc = Z_NULL; def.zfree = Z_NULL; def.opaque = Z_NULL; ret = deflateInit(&def, Z_DEFAULT_COMPRESSION); if (ret != Z_OK || blk == NULL) quit("out of memory"); /* compress from stdin until output full, or no more input */ def.avail_out = size + EXCESS; def.next_out = blk; ret = partcompress(stdin, &def); if (ret == Z_ERRNO) quit("error reading input"); /* if it all fit, then size was undersubscribed -- done! */ if (ret == Z_STREAM_END && def.avail_out >= EXCESS) { /* write block to stdout */ have = size + EXCESS - def.avail_out; if (fwrite(blk, 1, have, stdout) != have || ferror(stdout)) quit("error writing output"); /* clean up and print results to stderr */ ret = deflateEnd(&def); assert(ret != Z_STREAM_ERROR); free(blk); fprintf(stderr, "%u bytes unused out of %u requested (all input)\n", size - have, size); return 0; } /* it didn't all fit -- set up for recompression */ inf.zalloc = Z_NULL; inf.zfree = Z_NULL; inf.opaque = Z_NULL; inf.avail_in = 0; inf.next_in = Z_NULL; ret = inflateInit(&inf); tmp = malloc(size + EXCESS); if (ret != Z_OK || tmp == NULL) quit("out of memory"); ret = deflateReset(&def); assert(ret != Z_STREAM_ERROR); /* do first recompression close to the right amount */ inf.avail_in = size + EXCESS; inf.next_in = blk; def.avail_out = size + EXCESS; def.next_out = tmp; ret = recompress(&inf, &def); if (ret == Z_MEM_ERROR) quit("out of memory"); /* set up for next reocmpression */ ret = inflateReset(&inf); assert(ret != Z_STREAM_ERROR); ret = deflateReset(&def); assert(ret != Z_STREAM_ERROR); /* do second and final recompression (third compression) */ inf.avail_in = size - MARGIN; /* assure stream will complete */ inf.next_in = tmp; def.avail_out = size; def.next_out = blk; ret = recompress(&inf, &def); if (ret == Z_MEM_ERROR) quit("out of memory"); assert(ret == Z_STREAM_END); /* otherwise MARGIN too small */ /* done -- write block to stdout */ have = size - def.avail_out; if (fwrite(blk, 1, have, stdout) != have || ferror(stdout)) quit("error writing output"); /* clean up and print results to stderr */ free(tmp); ret = inflateEnd(&inf); assert(ret != Z_STREAM_ERROR); ret = deflateEnd(&def); assert(ret != Z_STREAM_ERROR); free(blk); fprintf(stderr, "%u bytes unused out of %u requested (%lu input)\n", size - have, size, def.total_in); return 0; } zlib-1.2.11.dfsg/examples/zpipe.c0000644000175000017500000001426310347111237016450 0ustar brooniebroonie/* zpipe.c: example of proper use of zlib's inflate() and deflate() Not copyrighted -- provided to the public domain Version 1.4 11 December 2005 Mark Adler */ /* Version history: 1.0 30 Oct 2004 First version 1.1 8 Nov 2004 Add void casting for unused return values Use switch statement for inflate() return values 1.2 9 Nov 2004 Add assertions to document zlib guarantees 1.3 6 Apr 2005 Remove incorrect assertion in inf() 1.4 11 Dec 2005 Add hack to avoid MSDOS end-of-line conversions Avoid some compiler warnings for input and output buffers */ #include #include #include #include "zlib.h" #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) # include # include # define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) #else # define SET_BINARY_MODE(file) #endif #define CHUNK 16384 /* Compress from file source to file dest until EOF on source. def() returns Z_OK on success, Z_MEM_ERROR if memory could not be allocated for processing, Z_STREAM_ERROR if an invalid compression level is supplied, Z_VERSION_ERROR if the version of zlib.h and the version of the library linked do not match, or Z_ERRNO if there is an error reading or writing the files. */ int def(FILE *source, FILE *dest, int level) { int ret, flush; unsigned have; z_stream strm; unsigned char in[CHUNK]; unsigned char out[CHUNK]; /* allocate deflate state */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; ret = deflateInit(&strm, level); if (ret != Z_OK) return ret; /* compress until end of file */ do { strm.avail_in = fread(in, 1, CHUNK, source); if (ferror(source)) { (void)deflateEnd(&strm); return Z_ERRNO; } flush = feof(source) ? Z_FINISH : Z_NO_FLUSH; strm.next_in = in; /* run deflate() on input until output buffer not full, finish compression if all of source has been read in */ do { strm.avail_out = CHUNK; strm.next_out = out; ret = deflate(&strm, flush); /* no bad return value */ assert(ret != Z_STREAM_ERROR); /* state not clobbered */ have = CHUNK - strm.avail_out; if (fwrite(out, 1, have, dest) != have || ferror(dest)) { (void)deflateEnd(&strm); return Z_ERRNO; } } while (strm.avail_out == 0); assert(strm.avail_in == 0); /* all input will be used */ /* done when last data in file processed */ } while (flush != Z_FINISH); assert(ret == Z_STREAM_END); /* stream will be complete */ /* clean up and return */ (void)deflateEnd(&strm); return Z_OK; } /* Decompress from file source to file dest until stream ends or EOF. inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be allocated for processing, Z_DATA_ERROR if the deflate data is invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and the version of the library linked do not match, or Z_ERRNO if there is an error reading or writing the files. */ int inf(FILE *source, FILE *dest) { int ret; unsigned have; z_stream strm; unsigned char in[CHUNK]; unsigned char out[CHUNK]; /* allocate inflate state */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit(&strm); if (ret != Z_OK) return ret; /* decompress until deflate stream ends or end of file */ do { strm.avail_in = fread(in, 1, CHUNK, source); if (ferror(source)) { (void)inflateEnd(&strm); return Z_ERRNO; } if (strm.avail_in == 0) break; strm.next_in = in; /* run inflate() on input until output buffer not full */ do { strm.avail_out = CHUNK; strm.next_out = out; ret = inflate(&strm, Z_NO_FLUSH); assert(ret != Z_STREAM_ERROR); /* state not clobbered */ switch (ret) { case Z_NEED_DICT: ret = Z_DATA_ERROR; /* and fall through */ case Z_DATA_ERROR: case Z_MEM_ERROR: (void)inflateEnd(&strm); return ret; } have = CHUNK - strm.avail_out; if (fwrite(out, 1, have, dest) != have || ferror(dest)) { (void)inflateEnd(&strm); return Z_ERRNO; } } while (strm.avail_out == 0); /* done when inflate() says it's done */ } while (ret != Z_STREAM_END); /* clean up and return */ (void)inflateEnd(&strm); return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR; } /* report a zlib or i/o error */ void zerr(int ret) { fputs("zpipe: ", stderr); switch (ret) { case Z_ERRNO: if (ferror(stdin)) fputs("error reading stdin\n", stderr); if (ferror(stdout)) fputs("error writing stdout\n", stderr); break; case Z_STREAM_ERROR: fputs("invalid compression level\n", stderr); break; case Z_DATA_ERROR: fputs("invalid or incomplete deflate data\n", stderr); break; case Z_MEM_ERROR: fputs("out of memory\n", stderr); break; case Z_VERSION_ERROR: fputs("zlib version mismatch!\n", stderr); } } /* compress or decompress from stdin to stdout */ int main(int argc, char **argv) { int ret; /* avoid end-of-line conversions */ SET_BINARY_MODE(stdin); SET_BINARY_MODE(stdout); /* do compression if no arguments */ if (argc == 1) { ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION); if (ret != Z_OK) zerr(ret); return ret; } /* do decompression if -d specified */ else if (argc == 2 && strcmp(argv[1], "-d") == 0) { ret = inf(stdin, stdout); if (ret != Z_OK) zerr(ret); return ret; } /* otherwise, report usage */ else { fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr); return 1; } } zlib-1.2.11.dfsg/examples/gzlog.h0000644000175000017500000001071512014036070016440 0ustar brooniebroonie/* gzlog.h Copyright (C) 2004, 2008, 2012 Mark Adler, all rights reserved version 2.2, 14 Aug 2012 This software is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Mark Adler madler@alumni.caltech.edu */ /* Version History: 1.0 26 Nov 2004 First version 2.0 25 Apr 2008 Complete redesign for recovery of interrupted operations Interface changed slightly in that now path is a prefix Compression now occurs as needed during gzlog_write() gzlog_write() now always leaves the log file as valid gzip 2.1 8 Jul 2012 Fix argument checks in gzlog_compress() and gzlog_write() 2.2 14 Aug 2012 Clean up signed comparisons */ /* The gzlog object allows writing short messages to a gzipped log file, opening the log file locked for small bursts, and then closing it. The log object works by appending stored (uncompressed) data to the gzip file until 1 MB has been accumulated. At that time, the stored data is compressed, and replaces the uncompressed data in the file. The log file is truncated to its new size at that time. After each write operation, the log file is a valid gzip file that can decompressed to recover what was written. The gzlog operations can be interupted at any point due to an application or system crash, and the log file will be recovered the next time the log is opened with gzlog_open(). */ #ifndef GZLOG_H #define GZLOG_H /* gzlog object type */ typedef void gzlog; /* Open a gzlog object, creating the log file if it does not exist. Return NULL on error. Note that gzlog_open() could take a while to complete if it has to wait to verify that a lock is stale (possibly for five minutes), or if there is significant contention with other instantiations of this object when locking the resource. path is the prefix of the file names created by this object. If path is "foo", then the log file will be "foo.gz", and other auxiliary files will be created and destroyed during the process: "foo.dict" for a compression dictionary, "foo.temp" for a temporary (next) dictionary, "foo.add" for data being added or compressed, "foo.lock" for the lock file, and "foo.repairs" to log recovery operations performed due to interrupted gzlog operations. A gzlog_open() followed by a gzlog_close() will recover a previously interrupted operation, if any. */ gzlog *gzlog_open(char *path); /* Write to a gzlog object. Return zero on success, -1 if there is a file i/o error on any of the gzlog files (this should not happen if gzlog_open() succeeded, unless the device has run out of space or leftover auxiliary files have permissions or ownership that prevent their use), -2 if there is a memory allocation failure, or -3 if the log argument is invalid (e.g. if it was not created by gzlog_open()). This function will write data to the file uncompressed, until 1 MB has been accumulated, at which time that data will be compressed. The log file will be a valid gzip file upon successful return. */ int gzlog_write(gzlog *log, void *data, size_t len); /* Force compression of any uncompressed data in the log. This should be used sparingly, if at all. The main application would be when a log file will not be appended to again. If this is used to compress frequently while appending, it will both significantly increase the execution time and reduce the compression ratio. The return codes are the same as for gzlog_write(). */ int gzlog_compress(gzlog *log); /* Close a gzlog object. Return zero on success, -3 if the log argument is invalid. The log object is freed, and so cannot be referenced again. */ int gzlog_close(gzlog *log); #endif zlib-1.2.11.dfsg/examples/gun.c0000644000175000017500000006252713005413155016116 0ustar brooniebroonie/* gun.c -- simple gunzip to give an example of the use of inflateBack() * Copyright (C) 2003, 2005, 2008, 2010, 2012 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h Version 1.7 12 August 2012 Mark Adler */ /* Version history: 1.0 16 Feb 2003 First version for testing of inflateBack() 1.1 21 Feb 2005 Decompress concatenated gzip streams Remove use of "this" variable (C++ keyword) Fix return value for in() Improve allocation failure checking Add typecasting for void * structures Add -h option for command version and usage Add a bunch of comments 1.2 20 Mar 2005 Add Unix compress (LZW) decompression Copy file attributes from input file to output file 1.3 12 Jun 2005 Add casts for error messages [Oberhumer] 1.4 8 Dec 2006 LZW decompression speed improvements 1.5 9 Feb 2008 Avoid warning in latest version of gcc 1.6 17 Jan 2010 Avoid signed/unsigned comparison warnings 1.7 12 Aug 2012 Update for z_const usage in zlib 1.2.8 */ /* gun [ -t ] [ name ... ] decompresses the data in the named gzip files. If no arguments are given, gun will decompress from stdin to stdout. The names must end in .gz, -gz, .z, -z, _z, or .Z. The uncompressed data will be written to a file name with the suffix stripped. On success, the original file is deleted. On failure, the output file is deleted. For most failures, the command will continue to process the remaining names on the command line. A memory allocation failure will abort the command. If -t is specified, then the listed files or stdin will be tested as gzip files for integrity (without checking for a proper suffix), no output will be written, and no files will be deleted. Like gzip, gun allows concatenated gzip streams and will decompress them, writing all of the uncompressed data to the output. Unlike gzip, gun allows an empty file on input, and will produce no error writing an empty output file. gun will also decompress files made by Unix compress, which uses LZW compression. These files are automatically detected by virtue of their magic header bytes. Since the end of Unix compress stream is marked by the end-of-file, they cannot be concantenated. If a Unix compress stream is encountered in an input file, it is the last stream in that file. Like gunzip and uncompress, the file attributes of the original compressed file are maintained in the final uncompressed file, to the extent that the user permissions allow it. On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version 1.2.4) is on the same file, when gun is linked with zlib 1.2.2. Also the LZW decompression provided by gun is about twice as fast as the standard Unix uncompress command. */ /* external functions and related types and constants */ #include /* fprintf() */ #include /* malloc(), free() */ #include /* strerror(), strcmp(), strlen(), memcpy() */ #include /* errno */ #include /* open() */ #include /* read(), write(), close(), chown(), unlink() */ #include #include /* stat(), chmod() */ #include /* utime() */ #include "zlib.h" /* inflateBackInit(), inflateBack(), */ /* inflateBackEnd(), crc32() */ /* function declaration */ #define local static /* buffer constants */ #define SIZE 32768U /* input and output buffer sizes */ #define PIECE 16384 /* limits i/o chunks for 16-bit int case */ /* structure for infback() to pass to input function in() -- it maintains the input file and a buffer of size SIZE */ struct ind { int infile; unsigned char *inbuf; }; /* Load input buffer, assumed to be empty, and return bytes loaded and a pointer to them. read() is called until the buffer is full, or until it returns end-of-file or error. Return 0 on error. */ local unsigned in(void *in_desc, z_const unsigned char **buf) { int ret; unsigned len; unsigned char *next; struct ind *me = (struct ind *)in_desc; next = me->inbuf; *buf = next; len = 0; do { ret = PIECE; if ((unsigned)ret > SIZE - len) ret = (int)(SIZE - len); ret = (int)read(me->infile, next, ret); if (ret == -1) { len = 0; break; } next += ret; len += ret; } while (ret != 0 && len < SIZE); return len; } /* structure for infback() to pass to output function out() -- it maintains the output file, a running CRC-32 check on the output and the total number of bytes output, both for checking against the gzip trailer. (The length in the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and the output is greater than 4 GB.) */ struct outd { int outfile; int check; /* true if checking crc and total */ unsigned long crc; unsigned long total; }; /* Write output buffer and update the CRC-32 and total bytes written. write() is called until all of the output is written or an error is encountered. On success out() returns 0. For a write failure, out() returns 1. If the output file descriptor is -1, then nothing is written. */ local int out(void *out_desc, unsigned char *buf, unsigned len) { int ret; struct outd *me = (struct outd *)out_desc; if (me->check) { me->crc = crc32(me->crc, buf, len); me->total += len; } if (me->outfile != -1) do { ret = PIECE; if ((unsigned)ret > len) ret = (int)len; ret = (int)write(me->outfile, buf, ret); if (ret == -1) return 1; buf += ret; len -= ret; } while (len != 0); return 0; } /* next input byte macro for use inside lunpipe() and gunpipe() */ #define NEXT() (have ? 0 : (have = in(indp, &next)), \ last = have ? (have--, (int)(*next++)) : -1) /* memory for gunpipe() and lunpipe() -- the first 256 entries of prefix[] and suffix[] are never used, could have offset the index, but it's faster to waste the memory */ unsigned char inbuf[SIZE]; /* input buffer */ unsigned char outbuf[SIZE]; /* output buffer */ unsigned short prefix[65536]; /* index to LZW prefix string */ unsigned char suffix[65536]; /* one-character LZW suffix */ unsigned char match[65280 + 2]; /* buffer for reversed match or gzip 32K sliding window */ /* throw out what's left in the current bits byte buffer (this is a vestigial aspect of the compressed data format derived from an implementation that made use of a special VAX machine instruction!) */ #define FLUSHCODE() \ do { \ left = 0; \ rem = 0; \ if (chunk > have) { \ chunk -= have; \ have = 0; \ if (NEXT() == -1) \ break; \ chunk--; \ if (chunk > have) { \ chunk = have = 0; \ break; \ } \ } \ have -= chunk; \ next += chunk; \ chunk = 0; \ } while (0) /* Decompress a compress (LZW) file from indp to outfile. The compress magic header (two bytes) has already been read and verified. There are have bytes of buffered input at next. strm is used for passing error information back to gunpipe(). lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of file, read error, or write error (a write error indicated by strm->next_in not equal to Z_NULL), or Z_DATA_ERROR for invalid input. */ local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp, int outfile, z_stream *strm) { int last; /* last byte read by NEXT(), or -1 if EOF */ unsigned chunk; /* bytes left in current chunk */ int left; /* bits left in rem */ unsigned rem; /* unused bits from input */ int bits; /* current bits per code */ unsigned code; /* code, table traversal index */ unsigned mask; /* mask for current bits codes */ int max; /* maximum bits per code for this stream */ unsigned flags; /* compress flags, then block compress flag */ unsigned end; /* last valid entry in prefix/suffix tables */ unsigned temp; /* current code */ unsigned prev; /* previous code */ unsigned final; /* last character written for previous code */ unsigned stack; /* next position for reversed string */ unsigned outcnt; /* bytes in output buffer */ struct outd outd; /* output structure */ unsigned char *p; /* set up output */ outd.outfile = outfile; outd.check = 0; /* process remainder of compress header -- a flags byte */ flags = NEXT(); if (last == -1) return Z_BUF_ERROR; if (flags & 0x60) { strm->msg = (char *)"unknown lzw flags set"; return Z_DATA_ERROR; } max = flags & 0x1f; if (max < 9 || max > 16) { strm->msg = (char *)"lzw bits out of range"; return Z_DATA_ERROR; } if (max == 9) /* 9 doesn't really mean 9 */ max = 10; flags &= 0x80; /* true if block compress */ /* clear table */ bits = 9; mask = 0x1ff; end = flags ? 256 : 255; /* set up: get first 9-bit code, which is the first decompressed byte, but don't create a table entry until the next code */ if (NEXT() == -1) /* no compressed data is ok */ return Z_OK; final = prev = (unsigned)last; /* low 8 bits of code */ if (NEXT() == -1) /* missing a bit */ return Z_BUF_ERROR; if (last & 1) { /* code must be < 256 */ strm->msg = (char *)"invalid lzw code"; return Z_DATA_ERROR; } rem = (unsigned)last >> 1; /* remaining 7 bits */ left = 7; chunk = bits - 2; /* 7 bytes left in this chunk */ outbuf[0] = (unsigned char)final; /* write first decompressed byte */ outcnt = 1; /* decode codes */ stack = 0; for (;;) { /* if the table will be full after this, increment the code size */ if (end >= mask && bits < max) { FLUSHCODE(); bits++; mask <<= 1; mask++; } /* get a code of length bits */ if (chunk == 0) /* decrement chunk modulo bits */ chunk = bits; code = rem; /* low bits of code */ if (NEXT() == -1) { /* EOF is end of compressed data */ /* write remaining buffered output */ if (outcnt && out(&outd, outbuf, outcnt)) { strm->next_in = outbuf; /* signal write error */ return Z_BUF_ERROR; } return Z_OK; } code += (unsigned)last << left; /* middle (or high) bits of code */ left += 8; chunk--; if (bits > left) { /* need more bits */ if (NEXT() == -1) /* can't end in middle of code */ return Z_BUF_ERROR; code += (unsigned)last << left; /* high bits of code */ left += 8; chunk--; } code &= mask; /* mask to current code length */ left -= bits; /* number of unused bits */ rem = (unsigned)last >> (8 - left); /* unused bits from last byte */ /* process clear code (256) */ if (code == 256 && flags) { FLUSHCODE(); bits = 9; /* initialize bits and mask */ mask = 0x1ff; end = 255; /* empty table */ continue; /* get next code */ } /* special code to reuse last match */ temp = code; /* save the current code */ if (code > end) { /* Be picky on the allowed code here, and make sure that the code we drop through (prev) will be a valid index so that random input does not cause an exception. The code != end + 1 check is empirically derived, and not checked in the original uncompress code. If this ever causes a problem, that check could be safely removed. Leaving this check in greatly improves gun's ability to detect random or corrupted input after a compress header. In any case, the prev > end check must be retained. */ if (code != end + 1 || prev > end) { strm->msg = (char *)"invalid lzw code"; return Z_DATA_ERROR; } match[stack++] = (unsigned char)final; code = prev; } /* walk through linked list to generate output in reverse order */ p = match + stack; while (code >= 256) { *p++ = suffix[code]; code = prefix[code]; } stack = p - match; match[stack++] = (unsigned char)code; final = code; /* link new table entry */ if (end < mask) { end++; prefix[end] = (unsigned short)prev; suffix[end] = (unsigned char)final; } /* set previous code for next iteration */ prev = temp; /* write output in forward order */ while (stack > SIZE - outcnt) { while (outcnt < SIZE) outbuf[outcnt++] = match[--stack]; if (out(&outd, outbuf, outcnt)) { strm->next_in = outbuf; /* signal write error */ return Z_BUF_ERROR; } outcnt = 0; } p = match + stack; do { outbuf[outcnt++] = *--p; } while (p > match); stack = 0; /* loop for next code with final and prev as the last match, rem and left provide the first 0..7 bits of the next code, end is the last valid table entry */ } } /* Decompress a gzip file from infile to outfile. strm is assumed to have been successfully initialized with inflateBackInit(). The input file may consist of a series of gzip streams, in which case all of them will be decompressed to the output file. If outfile is -1, then the gzip stream(s) integrity is checked and nothing is written. The return value is a zlib error code: Z_MEM_ERROR if out of memory, Z_DATA_ERROR if the header or the compressed data is invalid, or if the trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip stream) follows a valid gzip stream. */ local int gunpipe(z_stream *strm, int infile, int outfile) { int ret, first, last; unsigned have, flags, len; z_const unsigned char *next = NULL; struct ind ind, *indp; struct outd outd; /* setup input buffer */ ind.infile = infile; ind.inbuf = inbuf; indp = &ind; /* decompress concatenated gzip streams */ have = 0; /* no input data read in yet */ first = 1; /* looking for first gzip header */ strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */ for (;;) { /* look for the two magic header bytes for a gzip stream */ if (NEXT() == -1) { ret = Z_OK; break; /* empty gzip stream is ok */ } if (last != 31 || (NEXT() != 139 && last != 157)) { strm->msg = (char *)"incorrect header check"; ret = first ? Z_DATA_ERROR : Z_ERRNO; break; /* not a gzip or compress header */ } first = 0; /* next non-header is junk */ /* process a compress (LZW) file -- can't be concatenated after this */ if (last == 157) { ret = lunpipe(have, next, indp, outfile, strm); break; } /* process remainder of gzip header */ ret = Z_BUF_ERROR; if (NEXT() != 8) { /* only deflate method allowed */ if (last == -1) break; strm->msg = (char *)"unknown compression method"; ret = Z_DATA_ERROR; break; } flags = NEXT(); /* header flags */ NEXT(); /* discard mod time, xflgs, os */ NEXT(); NEXT(); NEXT(); NEXT(); NEXT(); if (last == -1) break; if (flags & 0xe0) { strm->msg = (char *)"unknown header flags set"; ret = Z_DATA_ERROR; break; } if (flags & 4) { /* extra field */ len = NEXT(); len += (unsigned)(NEXT()) << 8; if (last == -1) break; while (len > have) { len -= have; have = 0; if (NEXT() == -1) break; len--; } if (last == -1) break; have -= len; next += len; } if (flags & 8) /* file name */ while (NEXT() != 0 && last != -1) ; if (flags & 16) /* comment */ while (NEXT() != 0 && last != -1) ; if (flags & 2) { /* header crc */ NEXT(); NEXT(); } if (last == -1) break; /* set up output */ outd.outfile = outfile; outd.check = 1; outd.crc = crc32(0L, Z_NULL, 0); outd.total = 0; /* decompress data to output */ strm->next_in = next; strm->avail_in = have; ret = inflateBack(strm, in, indp, out, &outd); if (ret != Z_STREAM_END) break; next = strm->next_in; have = strm->avail_in; strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */ /* check trailer */ ret = Z_BUF_ERROR; if (NEXT() != (int)(outd.crc & 0xff) || NEXT() != (int)((outd.crc >> 8) & 0xff) || NEXT() != (int)((outd.crc >> 16) & 0xff) || NEXT() != (int)((outd.crc >> 24) & 0xff)) { /* crc error */ if (last != -1) { strm->msg = (char *)"incorrect data check"; ret = Z_DATA_ERROR; } break; } if (NEXT() != (int)(outd.total & 0xff) || NEXT() != (int)((outd.total >> 8) & 0xff) || NEXT() != (int)((outd.total >> 16) & 0xff) || NEXT() != (int)((outd.total >> 24) & 0xff)) { /* length error */ if (last != -1) { strm->msg = (char *)"incorrect length check"; ret = Z_DATA_ERROR; } break; } /* go back and look for another gzip stream */ } /* clean up and return */ return ret; } /* Copy file attributes, from -> to, as best we can. This is best effort, so no errors are reported. The mode bits, including suid, sgid, and the sticky bit are copied (if allowed), the owner's user id and group id are copied (again if allowed), and the access and modify times are copied. */ local void copymeta(char *from, char *to) { struct stat was; struct utimbuf when; /* get all of from's Unix meta data, return if not a regular file */ if (stat(from, &was) != 0 || (was.st_mode & S_IFMT) != S_IFREG) return; /* set to's mode bits, ignore errors */ (void)chmod(to, was.st_mode & 07777); /* copy owner's user and group, ignore errors */ (void)chown(to, was.st_uid, was.st_gid); /* copy access and modify times, ignore errors */ when.actime = was.st_atime; when.modtime = was.st_mtime; (void)utime(to, &when); } /* Decompress the file inname to the file outnname, of if test is true, just decompress without writing and check the gzip trailer for integrity. If inname is NULL or an empty string, read from stdin. If outname is NULL or an empty string, write to stdout. strm is a pre-initialized inflateBack structure. When appropriate, copy the file attributes from inname to outname. gunzip() returns 1 if there is an out-of-memory error or an unexpected return code from gunpipe(). Otherwise it returns 0. */ local int gunzip(z_stream *strm, char *inname, char *outname, int test) { int ret; int infile, outfile; /* open files */ if (inname == NULL || *inname == 0) { inname = "-"; infile = 0; /* stdin */ } else { infile = open(inname, O_RDONLY, 0); if (infile == -1) { fprintf(stderr, "gun cannot open %s\n", inname); return 0; } } if (test) outfile = -1; else if (outname == NULL || *outname == 0) { outname = "-"; outfile = 1; /* stdout */ } else { outfile = open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0666); if (outfile == -1) { close(infile); fprintf(stderr, "gun cannot create %s\n", outname); return 0; } } errno = 0; /* decompress */ ret = gunpipe(strm, infile, outfile); if (outfile > 2) close(outfile); if (infile > 2) close(infile); /* interpret result */ switch (ret) { case Z_OK: case Z_ERRNO: if (infile > 2 && outfile > 2) { copymeta(inname, outname); /* copy attributes */ unlink(inname); } if (ret == Z_ERRNO) fprintf(stderr, "gun warning: trailing garbage ignored in %s\n", inname); break; case Z_DATA_ERROR: if (outfile > 2) unlink(outname); fprintf(stderr, "gun data error on %s: %s\n", inname, strm->msg); break; case Z_MEM_ERROR: if (outfile > 2) unlink(outname); fprintf(stderr, "gun out of memory error--aborting\n"); return 1; case Z_BUF_ERROR: if (outfile > 2) unlink(outname); if (strm->next_in != Z_NULL) { fprintf(stderr, "gun write error on %s: %s\n", outname, strerror(errno)); } else if (errno) { fprintf(stderr, "gun read error on %s: %s\n", inname, strerror(errno)); } else { fprintf(stderr, "gun unexpected end of file on %s\n", inname); } break; default: if (outfile > 2) unlink(outname); fprintf(stderr, "gun internal error--aborting\n"); return 1; } return 0; } /* Process the gun command line arguments. See the command syntax near the beginning of this source file. */ int main(int argc, char **argv) { int ret, len, test; char *outname; unsigned char *window; z_stream strm; /* initialize inflateBack state for repeated use */ window = match; /* reuse LZW match buffer */ strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; ret = inflateBackInit(&strm, 15, window); if (ret != Z_OK) { fprintf(stderr, "gun out of memory error--aborting\n"); return 1; } /* decompress each file to the same name with the suffix removed */ argc--; argv++; test = 0; if (argc && strcmp(*argv, "-h") == 0) { fprintf(stderr, "gun 1.6 (17 Jan 2010)\n"); fprintf(stderr, "Copyright (C) 2003-2010 Mark Adler\n"); fprintf(stderr, "usage: gun [-t] [file1.gz [file2.Z ...]]\n"); return 0; } if (argc && strcmp(*argv, "-t") == 0) { test = 1; argc--; argv++; } if (argc) do { if (test) outname = NULL; else { len = (int)strlen(*argv); if (strcmp(*argv + len - 3, ".gz") == 0 || strcmp(*argv + len - 3, "-gz") == 0) len -= 3; else if (strcmp(*argv + len - 2, ".z") == 0 || strcmp(*argv + len - 2, "-z") == 0 || strcmp(*argv + len - 2, "_z") == 0 || strcmp(*argv + len - 2, ".Z") == 0) len -= 2; else { fprintf(stderr, "gun error: no gz type on %s--skipping\n", *argv); continue; } outname = malloc(len + 1); if (outname == NULL) { fprintf(stderr, "gun out of memory error--aborting\n"); ret = 1; break; } memcpy(outname, *argv, len); outname[len] = 0; } ret = gunzip(&strm, *argv, outname, test); if (outname != NULL) free(outname); if (ret) break; } while (argv++, --argc); else ret = gunzip(&strm, NULL, NULL, test); /* clean up */ inflateBackEnd(&strm); return ret; } zlib-1.2.11.dfsg/examples/gzjoin.c0000644000175000017500000003346412012377244016630 0ustar brooniebroonie/* gzjoin -- command to join gzip files into one gzip file Copyright (C) 2004, 2005, 2012 Mark Adler, all rights reserved version 1.2, 14 Aug 2012 This software is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Mark Adler madler@alumni.caltech.edu */ /* * Change history: * * 1.0 11 Dec 2004 - First version * 1.1 12 Jun 2005 - Changed ssize_t to long for portability * 1.2 14 Aug 2012 - Clean up for z_const usage */ /* gzjoin takes one or more gzip files on the command line and writes out a single gzip file that will uncompress to the concatenation of the uncompressed data from the individual gzip files. gzjoin does this without having to recompress any of the data and without having to calculate a new crc32 for the concatenated uncompressed data. gzjoin does however have to decompress all of the input data in order to find the bits in the compressed data that need to be modified to concatenate the streams. gzjoin does not do an integrity check on the input gzip files other than checking the gzip header and decompressing the compressed data. They are otherwise assumed to be complete and correct. Each joint between gzip files removes at least 18 bytes of previous trailer and subsequent header, and inserts an average of about three bytes to the compressed data in order to connect the streams. The output gzip file has a minimal ten-byte gzip header with no file name or modification time. This program was written to illustrate the use of the Z_BLOCK option of inflate() and the crc32_combine() function. gzjoin will not compile with versions of zlib earlier than 1.2.3. */ #include /* fputs(), fprintf(), fwrite(), putc() */ #include /* exit(), malloc(), free() */ #include /* open() */ #include /* close(), read(), lseek() */ #include "zlib.h" /* crc32(), crc32_combine(), inflateInit2(), inflate(), inflateEnd() */ #define local static /* exit with an error (return a value to allow use in an expression) */ local int bail(char *why1, char *why2) { fprintf(stderr, "gzjoin error: %s%s, output incomplete\n", why1, why2); exit(1); return 0; } /* -- simple buffered file input with access to the buffer -- */ #define CHUNK 32768 /* must be a power of two and fit in unsigned */ /* bin buffered input file type */ typedef struct { char *name; /* name of file for error messages */ int fd; /* file descriptor */ unsigned left; /* bytes remaining at next */ unsigned char *next; /* next byte to read */ unsigned char *buf; /* allocated buffer of length CHUNK */ } bin; /* close a buffered file and free allocated memory */ local void bclose(bin *in) { if (in != NULL) { if (in->fd != -1) close(in->fd); if (in->buf != NULL) free(in->buf); free(in); } } /* open a buffered file for input, return a pointer to type bin, or NULL on failure */ local bin *bopen(char *name) { bin *in; in = malloc(sizeof(bin)); if (in == NULL) return NULL; in->buf = malloc(CHUNK); in->fd = open(name, O_RDONLY, 0); if (in->buf == NULL || in->fd == -1) { bclose(in); return NULL; } in->left = 0; in->next = in->buf; in->name = name; return in; } /* load buffer from file, return -1 on read error, 0 or 1 on success, with 1 indicating that end-of-file was reached */ local int bload(bin *in) { long len; if (in == NULL) return -1; if (in->left != 0) return 0; in->next = in->buf; do { len = (long)read(in->fd, in->buf + in->left, CHUNK - in->left); if (len < 0) return -1; in->left += (unsigned)len; } while (len != 0 && in->left < CHUNK); return len == 0 ? 1 : 0; } /* get a byte from the file, bail if end of file */ #define bget(in) (in->left ? 0 : bload(in), \ in->left ? (in->left--, *(in->next)++) : \ bail("unexpected end of file on ", in->name)) /* get a four-byte little-endian unsigned integer from file */ local unsigned long bget4(bin *in) { unsigned long val; val = bget(in); val += (unsigned long)(bget(in)) << 8; val += (unsigned long)(bget(in)) << 16; val += (unsigned long)(bget(in)) << 24; return val; } /* skip bytes in file */ local void bskip(bin *in, unsigned skip) { /* check pointer */ if (in == NULL) return; /* easy case -- skip bytes in buffer */ if (skip <= in->left) { in->left -= skip; in->next += skip; return; } /* skip what's in buffer, discard buffer contents */ skip -= in->left; in->left = 0; /* seek past multiples of CHUNK bytes */ if (skip > CHUNK) { unsigned left; left = skip & (CHUNK - 1); if (left == 0) { /* exact number of chunks: seek all the way minus one byte to check for end-of-file with a read */ lseek(in->fd, skip - 1, SEEK_CUR); if (read(in->fd, in->buf, 1) != 1) bail("unexpected end of file on ", in->name); return; } /* skip the integral chunks, update skip with remainder */ lseek(in->fd, skip - left, SEEK_CUR); skip = left; } /* read more input and skip remainder */ bload(in); if (skip > in->left) bail("unexpected end of file on ", in->name); in->left -= skip; in->next += skip; } /* -- end of buffered input functions -- */ /* skip the gzip header from file in */ local void gzhead(bin *in) { int flags; /* verify gzip magic header and compression method */ if (bget(in) != 0x1f || bget(in) != 0x8b || bget(in) != 8) bail(in->name, " is not a valid gzip file"); /* get and verify flags */ flags = bget(in); if ((flags & 0xe0) != 0) bail("unknown reserved bits set in ", in->name); /* skip modification time, extra flags, and os */ bskip(in, 6); /* skip extra field if present */ if (flags & 4) { unsigned len; len = bget(in); len += (unsigned)(bget(in)) << 8; bskip(in, len); } /* skip file name if present */ if (flags & 8) while (bget(in) != 0) ; /* skip comment if present */ if (flags & 16) while (bget(in) != 0) ; /* skip header crc if present */ if (flags & 2) bskip(in, 2); } /* write a four-byte little-endian unsigned integer to out */ local void put4(unsigned long val, FILE *out) { putc(val & 0xff, out); putc((val >> 8) & 0xff, out); putc((val >> 16) & 0xff, out); putc((val >> 24) & 0xff, out); } /* Load up zlib stream from buffered input, bail if end of file */ local void zpull(z_streamp strm, bin *in) { if (in->left == 0) bload(in); if (in->left == 0) bail("unexpected end of file on ", in->name); strm->avail_in = in->left; strm->next_in = in->next; } /* Write header for gzip file to out and initialize trailer. */ local void gzinit(unsigned long *crc, unsigned long *tot, FILE *out) { fwrite("\x1f\x8b\x08\0\0\0\0\0\0\xff", 1, 10, out); *crc = crc32(0L, Z_NULL, 0); *tot = 0; } /* Copy the compressed data from name, zeroing the last block bit of the last block if clr is true, and adding empty blocks as needed to get to a byte boundary. If clr is false, then the last block becomes the last block of the output, and the gzip trailer is written. crc and tot maintains the crc and length (modulo 2^32) of the output for the trailer. The resulting gzip file is written to out. gzinit() must be called before the first call of gzcopy() to write the gzip header and to initialize crc and tot. */ local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot, FILE *out) { int ret; /* return value from zlib functions */ int pos; /* where the "last block" bit is in byte */ int last; /* true if processing the last block */ bin *in; /* buffered input file */ unsigned char *start; /* start of compressed data in buffer */ unsigned char *junk; /* buffer for uncompressed data -- discarded */ z_off_t len; /* length of uncompressed data (support > 4 GB) */ z_stream strm; /* zlib inflate stream */ /* open gzip file and skip header */ in = bopen(name); if (in == NULL) bail("could not open ", name); gzhead(in); /* allocate buffer for uncompressed data and initialize raw inflate stream */ junk = malloc(CHUNK); strm.zalloc = Z_NULL; strm.zfree = Z_NULL; strm.opaque = Z_NULL; strm.avail_in = 0; strm.next_in = Z_NULL; ret = inflateInit2(&strm, -15); if (junk == NULL || ret != Z_OK) bail("out of memory", ""); /* inflate and copy compressed data, clear last-block bit if requested */ len = 0; zpull(&strm, in); start = in->next; last = start[0] & 1; if (last && clr) start[0] &= ~1; strm.avail_out = 0; for (;;) { /* if input used and output done, write used input and get more */ if (strm.avail_in == 0 && strm.avail_out != 0) { fwrite(start, 1, strm.next_in - start, out); start = in->buf; in->left = 0; zpull(&strm, in); } /* decompress -- return early when end-of-block reached */ strm.avail_out = CHUNK; strm.next_out = junk; ret = inflate(&strm, Z_BLOCK); switch (ret) { case Z_MEM_ERROR: bail("out of memory", ""); case Z_DATA_ERROR: bail("invalid compressed data in ", in->name); } /* update length of uncompressed data */ len += CHUNK - strm.avail_out; /* check for block boundary (only get this when block copied out) */ if (strm.data_type & 128) { /* if that was the last block, then done */ if (last) break; /* number of unused bits in last byte */ pos = strm.data_type & 7; /* find the next last-block bit */ if (pos != 0) { /* next last-block bit is in last used byte */ pos = 0x100 >> pos; last = strm.next_in[-1] & pos; if (last && clr) in->buf[strm.next_in - in->buf - 1] &= ~pos; } else { /* next last-block bit is in next unused byte */ if (strm.avail_in == 0) { /* don't have that byte yet -- get it */ fwrite(start, 1, strm.next_in - start, out); start = in->buf; in->left = 0; zpull(&strm, in); } last = strm.next_in[0] & 1; if (last && clr) in->buf[strm.next_in - in->buf] &= ~1; } } } /* update buffer with unused input */ in->left = strm.avail_in; in->next = in->buf + (strm.next_in - in->buf); /* copy used input, write empty blocks to get to byte boundary */ pos = strm.data_type & 7; fwrite(start, 1, in->next - start - 1, out); last = in->next[-1]; if (pos == 0 || !clr) /* already at byte boundary, or last file: write last byte */ putc(last, out); else { /* append empty blocks to last byte */ last &= ((0x100 >> pos) - 1); /* assure unused bits are zero */ if (pos & 1) { /* odd -- append an empty stored block */ putc(last, out); if (pos == 1) putc(0, out); /* two more bits in block header */ fwrite("\0\0\xff\xff", 1, 4, out); } else { /* even -- append 1, 2, or 3 empty fixed blocks */ switch (pos) { case 6: putc(last | 8, out); last = 0; case 4: putc(last | 0x20, out); last = 0; case 2: putc(last | 0x80, out); putc(0, out); } } } /* update crc and tot */ *crc = crc32_combine(*crc, bget4(in), len); *tot += (unsigned long)len; /* clean up */ inflateEnd(&strm); free(junk); bclose(in); /* write trailer if this is the last gzip file */ if (!clr) { put4(*crc, out); put4(*tot, out); } } /* join the gzip files on the command line, write result to stdout */ int main(int argc, char **argv) { unsigned long crc, tot; /* running crc and total uncompressed length */ /* skip command name */ argc--; argv++; /* show usage if no arguments */ if (argc == 0) { fputs("gzjoin usage: gzjoin f1.gz [f2.gz [f3.gz ...]] > fjoin.gz\n", stderr); return 0; } /* join gzip files on command line and write to stdout */ gzinit(&crc, &tot, stdout); while (argc--) gzcopy(*argv++, argc, &crc, &tot, stdout); /* done */ return 0; } zlib-1.2.11.dfsg/examples/gzappend.c0000644000175000017500000004112112035651003017116 0ustar brooniebroonie/* gzappend -- command to append to a gzip file Copyright (C) 2003, 2012 Mark Adler, all rights reserved version 1.2, 11 Oct 2012 This software is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Mark Adler madler@alumni.caltech.edu */ /* * Change history: * * 1.0 19 Oct 2003 - First version * 1.1 4 Nov 2003 - Expand and clarify some comments and notes * - Add version and copyright to help * - Send help to stdout instead of stderr * - Add some preemptive typecasts * - Add L to constants in lseek() calls * - Remove some debugging information in error messages * - Use new data_type definition for zlib 1.2.1 * - Simplfy and unify file operations * - Finish off gzip file in gztack() * - Use deflatePrime() instead of adding empty blocks * - Keep gzip file clean on appended file read errors * - Use in-place rotate instead of auxiliary buffer * (Why you ask? Because it was fun to write!) * 1.2 11 Oct 2012 - Fix for proper z_const usage * - Check for input buffer malloc failure */ /* gzappend takes a gzip file and appends to it, compressing files from the command line or data from stdin. The gzip file is written to directly, to avoid copying that file, in case it's large. Note that this results in the unfriendly behavior that if gzappend fails, the gzip file is corrupted. This program was written to illustrate the use of the new Z_BLOCK option of zlib 1.2.x's inflate() function. This option returns from inflate() at each block boundary to facilitate locating and modifying the last block bit at the start of the final deflate block. Also whether using Z_BLOCK or not, another required feature of zlib 1.2.x is that inflate() now provides the number of unusued bits in the last input byte used. gzappend will not work with versions of zlib earlier than 1.2.1. gzappend first decompresses the gzip file internally, discarding all but the last 32K of uncompressed data, and noting the location of the last block bit and the number of unused bits in the last byte of the compressed data. The gzip trailer containing the CRC-32 and length of the uncompressed data is verified. This trailer will be later overwritten. Then the last block bit is cleared by seeking back in the file and rewriting the byte that contains it. Seeking forward, the last byte of the compressed data is saved along with the number of unused bits to initialize deflate. A deflate process is initialized, using the last 32K of the uncompressed data from the gzip file to initialize the dictionary. If the total uncompressed data was less than 32K, then all of it is used to initialize the dictionary. The deflate output bit buffer is also initialized with the last bits from the original deflate stream. From here on, the data to append is simply compressed using deflate, and written to the gzip file. When that is complete, the new CRC-32 and uncompressed length are written as the trailer of the gzip file. */ #include #include #include #include #include #include "zlib.h" #define local static #define LGCHUNK 14 #define CHUNK (1U << LGCHUNK) #define DSIZE 32768U /* print an error message and terminate with extreme prejudice */ local void bye(char *msg1, char *msg2) { fprintf(stderr, "gzappend error: %s%s\n", msg1, msg2); exit(1); } /* return the greatest common divisor of a and b using Euclid's algorithm, modified to be fast when one argument much greater than the other, and coded to avoid unnecessary swapping */ local unsigned gcd(unsigned a, unsigned b) { unsigned c; while (a && b) if (a > b) { c = b; while (a - c >= c) c <<= 1; a -= c; } else { c = a; while (b - c >= c) c <<= 1; b -= c; } return a + b; } /* rotate list[0..len-1] left by rot positions, in place */ local void rotate(unsigned char *list, unsigned len, unsigned rot) { unsigned char tmp; unsigned cycles; unsigned char *start, *last, *to, *from; /* normalize rot and handle degenerate cases */ if (len < 2) return; if (rot >= len) rot %= len; if (rot == 0) return; /* pointer to last entry in list */ last = list + (len - 1); /* do simple left shift by one */ if (rot == 1) { tmp = *list; memcpy(list, list + 1, len - 1); *last = tmp; return; } /* do simple right shift by one */ if (rot == len - 1) { tmp = *last; memmove(list + 1, list, len - 1); *list = tmp; return; } /* otherwise do rotate as a set of cycles in place */ cycles = gcd(len, rot); /* number of cycles */ do { start = from = list + cycles; /* start index is arbitrary */ tmp = *from; /* save entry to be overwritten */ for (;;) { to = from; /* next step in cycle */ from += rot; /* go right rot positions */ if (from > last) from -= len; /* (pointer better not wrap) */ if (from == start) break; /* all but one shifted */ *to = *from; /* shift left */ } *to = tmp; /* complete the circle */ } while (--cycles); } /* structure for gzip file read operations */ typedef struct { int fd; /* file descriptor */ int size; /* 1 << size is bytes in buf */ unsigned left; /* bytes available at next */ unsigned char *buf; /* buffer */ z_const unsigned char *next; /* next byte in buffer */ char *name; /* file name for error messages */ } file; /* reload buffer */ local int readin(file *in) { int len; len = read(in->fd, in->buf, 1 << in->size); if (len == -1) bye("error reading ", in->name); in->left = (unsigned)len; in->next = in->buf; return len; } /* read from file in, exit if end-of-file */ local int readmore(file *in) { if (readin(in) == 0) bye("unexpected end of ", in->name); return 0; } #define read1(in) (in->left == 0 ? readmore(in) : 0, \ in->left--, *(in->next)++) /* skip over n bytes of in */ local void skip(file *in, unsigned n) { unsigned bypass; if (n > in->left) { n -= in->left; bypass = n & ~((1U << in->size) - 1); if (bypass) { if (lseek(in->fd, (off_t)bypass, SEEK_CUR) == -1) bye("seeking ", in->name); n -= bypass; } readmore(in); if (n > in->left) bye("unexpected end of ", in->name); } in->left -= n; in->next += n; } /* read a four-byte unsigned integer, little-endian, from in */ unsigned long read4(file *in) { unsigned long val; val = read1(in); val += (unsigned)read1(in) << 8; val += (unsigned long)read1(in) << 16; val += (unsigned long)read1(in) << 24; return val; } /* skip over gzip header */ local void gzheader(file *in) { int flags; unsigned n; if (read1(in) != 31 || read1(in) != 139) bye(in->name, " not a gzip file"); if (read1(in) != 8) bye("unknown compression method in", in->name); flags = read1(in); if (flags & 0xe0) bye("unknown header flags set in", in->name); skip(in, 6); if (flags & 4) { n = read1(in); n += (unsigned)(read1(in)) << 8; skip(in, n); } if (flags & 8) while (read1(in) != 0) ; if (flags & 16) while (read1(in) != 0) ; if (flags & 2) skip(in, 2); } /* decompress gzip file "name", return strm with a deflate stream ready to continue compression of the data in the gzip file, and return a file descriptor pointing to where to write the compressed data -- the deflate stream is initialized to compress using level "level" */ local int gzscan(char *name, z_stream *strm, int level) { int ret, lastbit, left, full; unsigned have; unsigned long crc, tot; unsigned char *window; off_t lastoff, end; file gz; /* open gzip file */ gz.name = name; gz.fd = open(name, O_RDWR, 0); if (gz.fd == -1) bye("cannot open ", name); gz.buf = malloc(CHUNK); if (gz.buf == NULL) bye("out of memory", ""); gz.size = LGCHUNK; gz.left = 0; /* skip gzip header */ gzheader(&gz); /* prepare to decompress */ window = malloc(DSIZE); if (window == NULL) bye("out of memory", ""); strm->zalloc = Z_NULL; strm->zfree = Z_NULL; strm->opaque = Z_NULL; ret = inflateInit2(strm, -15); if (ret != Z_OK) bye("out of memory", " or library mismatch"); /* decompress the deflate stream, saving append information */ lastbit = 0; lastoff = lseek(gz.fd, 0L, SEEK_CUR) - gz.left; left = 0; strm->avail_in = gz.left; strm->next_in = gz.next; crc = crc32(0L, Z_NULL, 0); have = full = 0; do { /* if needed, get more input */ if (strm->avail_in == 0) { readmore(&gz); strm->avail_in = gz.left; strm->next_in = gz.next; } /* set up output to next available section of sliding window */ strm->avail_out = DSIZE - have; strm->next_out = window + have; /* inflate and check for errors */ ret = inflate(strm, Z_BLOCK); if (ret == Z_STREAM_ERROR) bye("internal stream error!", ""); if (ret == Z_MEM_ERROR) bye("out of memory", ""); if (ret == Z_DATA_ERROR) bye("invalid compressed data--format violated in", name); /* update crc and sliding window pointer */ crc = crc32(crc, window + have, DSIZE - have - strm->avail_out); if (strm->avail_out) have = DSIZE - strm->avail_out; else { have = 0; full = 1; } /* process end of block */ if (strm->data_type & 128) { if (strm->data_type & 64) left = strm->data_type & 0x1f; else { lastbit = strm->data_type & 0x1f; lastoff = lseek(gz.fd, 0L, SEEK_CUR) - strm->avail_in; } } } while (ret != Z_STREAM_END); inflateEnd(strm); gz.left = strm->avail_in; gz.next = strm->next_in; /* save the location of the end of the compressed data */ end = lseek(gz.fd, 0L, SEEK_CUR) - gz.left; /* check gzip trailer and save total for deflate */ if (crc != read4(&gz)) bye("invalid compressed data--crc mismatch in ", name); tot = strm->total_out; if ((tot & 0xffffffffUL) != read4(&gz)) bye("invalid compressed data--length mismatch in", name); /* if not at end of file, warn */ if (gz.left || readin(&gz)) fprintf(stderr, "gzappend warning: junk at end of gzip file overwritten\n"); /* clear last block bit */ lseek(gz.fd, lastoff - (lastbit != 0), SEEK_SET); if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name); *gz.buf = (unsigned char)(*gz.buf ^ (1 << ((8 - lastbit) & 7))); lseek(gz.fd, -1L, SEEK_CUR); if (write(gz.fd, gz.buf, 1) != 1) bye("writing after seek to ", name); /* if window wrapped, build dictionary from window by rotating */ if (full) { rotate(window, DSIZE, have); have = DSIZE; } /* set up deflate stream with window, crc, total_in, and leftover bits */ ret = deflateInit2(strm, level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY); if (ret != Z_OK) bye("out of memory", ""); deflateSetDictionary(strm, window, have); strm->adler = crc; strm->total_in = tot; if (left) { lseek(gz.fd, --end, SEEK_SET); if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name); deflatePrime(strm, 8 - left, *gz.buf); } lseek(gz.fd, end, SEEK_SET); /* clean up and return */ free(window); free(gz.buf); return gz.fd; } /* append file "name" to gzip file gd using deflate stream strm -- if last is true, then finish off the deflate stream at the end */ local void gztack(char *name, int gd, z_stream *strm, int last) { int fd, len, ret; unsigned left; unsigned char *in, *out; /* open file to compress and append */ fd = 0; if (name != NULL) { fd = open(name, O_RDONLY, 0); if (fd == -1) fprintf(stderr, "gzappend warning: %s not found, skipping ...\n", name); } /* allocate buffers */ in = malloc(CHUNK); out = malloc(CHUNK); if (in == NULL || out == NULL) bye("out of memory", ""); /* compress input file and append to gzip file */ do { /* get more input */ len = read(fd, in, CHUNK); if (len == -1) { fprintf(stderr, "gzappend warning: error reading %s, skipping rest ...\n", name); len = 0; } strm->avail_in = (unsigned)len; strm->next_in = in; if (len) strm->adler = crc32(strm->adler, in, (unsigned)len); /* compress and write all available output */ do { strm->avail_out = CHUNK; strm->next_out = out; ret = deflate(strm, last && len == 0 ? Z_FINISH : Z_NO_FLUSH); left = CHUNK - strm->avail_out; while (left) { len = write(gd, out + CHUNK - strm->avail_out - left, left); if (len == -1) bye("writing gzip file", ""); left -= (unsigned)len; } } while (strm->avail_out == 0 && ret != Z_STREAM_END); } while (len != 0); /* write trailer after last entry */ if (last) { deflateEnd(strm); out[0] = (unsigned char)(strm->adler); out[1] = (unsigned char)(strm->adler >> 8); out[2] = (unsigned char)(strm->adler >> 16); out[3] = (unsigned char)(strm->adler >> 24); out[4] = (unsigned char)(strm->total_in); out[5] = (unsigned char)(strm->total_in >> 8); out[6] = (unsigned char)(strm->total_in >> 16); out[7] = (unsigned char)(strm->total_in >> 24); len = 8; do { ret = write(gd, out + 8 - len, len); if (ret == -1) bye("writing gzip file", ""); len -= ret; } while (len); close(gd); } /* clean up and return */ free(out); free(in); if (fd > 0) close(fd); } /* process the compression level option if present, scan the gzip file, and append the specified files, or append the data from stdin if no other file names are provided on the command line -- the gzip file must be writable and seekable */ int main(int argc, char **argv) { int gd, level; z_stream strm; /* ignore command name */ argc--; argv++; /* provide usage if no arguments */ if (*argv == NULL) { printf( "gzappend 1.2 (11 Oct 2012) Copyright (C) 2003, 2012 Mark Adler\n" ); printf( "usage: gzappend [-level] file.gz [ addthis [ andthis ... ]]\n"); return 0; } /* set compression level */ level = Z_DEFAULT_COMPRESSION; if (argv[0][0] == '-') { if (argv[0][1] < '0' || argv[0][1] > '9' || argv[0][2] != 0) bye("invalid compression level", ""); level = argv[0][1] - '0'; if (*++argv == NULL) bye("no gzip file name after options", ""); } /* prepare to append to gzip file */ gd = gzscan(*argv++, &strm, level); /* append files on command line, or from stdin if none */ if (*argv == NULL) gztack(NULL, gd, &strm, 1); else do { gztack(*argv, gd, &strm, argv[1] == NULL); } while (*++argv != NULL); return 0; } zlib-1.2.11.dfsg/contrib/0000755000175000017500000000000013162250707014775 5ustar brooniebrooniezlib-1.2.11.dfsg/contrib/README.contrib0000644000175000017500000000616213031626563017323 0ustar brooniebroonieAll files under this contrib directory are UNSUPPORTED. There were provided by users of zlib and were not tested by the authors of zlib. Use at your own risk. Please contact the authors of the contributions for help about these, not the zlib authors. Thanks. ada/ by Dmitriy Anisimkov Support for Ada See http://zlib-ada.sourceforge.net/ amd64/ by Mikhail Teterin asm code for AMD64 See patch at http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/96393 asm686/ by Brian Raiter asm code for Pentium and PPro/PII, using the AT&T (GNU as) syntax See http://www.muppetlabs.com/~breadbox/software/assembly.html blast/ by Mark Adler Decompressor for output of PKWare Data Compression Library (DCL) delphi/ by Cosmin Truta Support for Delphi and C++ Builder dotzlib/ by Henrik Ravn Support for Microsoft .Net and Visual C++ .Net gcc_gvmat64/by Gilles Vollant GCC Version of x86 64-bit (AMD64 and Intel EM64t) code for x64 assembler to replace longest_match() and inflate_fast() infback9/ by Mark Adler Unsupported diffs to infback to decode the deflate64 format inflate86/ by Chris Anderson Tuned x86 gcc asm code to replace inflate_fast() iostream/ by Kevin Ruland A C++ I/O streams interface to the zlib gz* functions iostream2/ by Tyge Løvset Another C++ I/O streams interface iostream3/ by Ludwig Schwardt and Kevin Ruland Yet another C++ I/O streams interface masmx64/ by Gilles Vollant x86 64-bit (AMD64 and Intel EM64t) code for x64 assembler to replace longest_match() and inflate_fast(), also masm x86 64-bits translation of Chris Anderson inflate_fast() masmx86/ by Gilles Vollant x86 asm code to replace longest_match() and inflate_fast(), for Visual C++ and MASM (32 bits). Based on Brian Raiter (asm686) and Chris Anderson (inflate86) minizip/ by Gilles Vollant Mini zip and unzip based on zlib Includes Zip64 support by Mathias Svensson See http://www.winimage.com/zLibDll/minizip.html pascal/ by Bob Dellaca et al. Support for Pascal puff/ by Mark Adler Small, low memory usage inflate. Also serves to provide an unambiguous description of the deflate format. testzlib/ by Gilles Vollant Example of the use of zlib untgz/ by Pedro A. Aranda Gutierrez A very simple tar.gz file extractor using zlib vstudio/ by Gilles Vollant Building a minizip-enhanced zlib with Microsoft Visual Studio Includes vc11 from kreuzerkrieg and vc12 from davispuh zlib-1.2.11.dfsg/contrib/testzlib/0000755000175000017500000000000013162250104016624 5ustar brooniebrooniezlib-1.2.11.dfsg/contrib/testzlib/testzlib.txt0000644000175000017500000000031510201411670021222 0ustar brooniebroonieTo build testzLib with Visual Studio 2005: copy to a directory file from : - root of zLib tree - contrib/testzlib - contrib/masmx86 - contrib/masmx64 - contrib/vstudio/vc7 and open testzlib8.slnzlib-1.2.11.dfsg/contrib/testzlib/testzlib.c0000644000175000017500000001673312112340455020645 0ustar brooniebroonie#include #include #include #include "zlib.h" void MyDoMinus64(LARGE_INTEGER *R,LARGE_INTEGER A,LARGE_INTEGER B) { R->HighPart = A.HighPart - B.HighPart; if (A.LowPart >= B.LowPart) R->LowPart = A.LowPart - B.LowPart; else { R->LowPart = A.LowPart - B.LowPart; R->HighPart --; } } #ifdef _M_X64 // see http://msdn2.microsoft.com/library/twchhe95(en-us,vs.80).aspx for __rdtsc unsigned __int64 __rdtsc(void); void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64) { // printf("rdtsc = %I64x\n",__rdtsc()); pbeginTime64->QuadPart=__rdtsc(); } LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf) { LARGE_INTEGER LIres; unsigned _int64 res=__rdtsc()-((unsigned _int64)(beginTime64.QuadPart)); LIres.QuadPart=res; // printf("rdtsc = %I64x\n",__rdtsc()); return LIres; } #else #ifdef _M_IX86 void myGetRDTSC32(LARGE_INTEGER * pbeginTime64) { DWORD dwEdx,dwEax; _asm { rdtsc mov dwEax,eax mov dwEdx,edx } pbeginTime64->LowPart=dwEax; pbeginTime64->HighPart=dwEdx; } void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64) { myGetRDTSC32(pbeginTime64); } LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf) { LARGE_INTEGER LIres,endTime64; myGetRDTSC32(&endTime64); LIres.LowPart=LIres.HighPart=0; MyDoMinus64(&LIres,endTime64,beginTime64); return LIres; } #else void myGetRDTSC32(LARGE_INTEGER * pbeginTime64) { } void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64) { } LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf) { LARGE_INTEGER lr; lr.QuadPart=0; return lr; } #endif #endif void BeginCountPerfCounter(LARGE_INTEGER * pbeginTime64,BOOL fComputeTimeQueryPerf) { if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(pbeginTime64))) { pbeginTime64->LowPart = GetTickCount(); pbeginTime64->HighPart = 0; } } DWORD GetMsecSincePerfCounter(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf) { LARGE_INTEGER endTime64,ticksPerSecond,ticks; DWORDLONG ticksShifted,tickSecShifted; DWORD dwLog=16+0; DWORD dwRet; if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(&endTime64))) dwRet = (GetTickCount() - beginTime64.LowPart)*1; else { MyDoMinus64(&ticks,endTime64,beginTime64); QueryPerformanceFrequency(&ticksPerSecond); { ticksShifted = Int64ShrlMod32(*(DWORDLONG*)&ticks,dwLog); tickSecShifted = Int64ShrlMod32(*(DWORDLONG*)&ticksPerSecond,dwLog); } dwRet = (DWORD)((((DWORD)ticksShifted)*1000)/(DWORD)(tickSecShifted)); dwRet *=1; } return dwRet; } int ReadFileMemory(const char* filename,long* plFileSize,unsigned char** pFilePtr) { FILE* stream; unsigned char* ptr; int retVal=1; stream=fopen(filename, "rb"); if (stream==NULL) return 0; fseek(stream,0,SEEK_END); *plFileSize=ftell(stream); fseek(stream,0,SEEK_SET); ptr=malloc((*plFileSize)+1); if (ptr==NULL) retVal=0; else { if (fread(ptr, 1, *plFileSize,stream) != (*plFileSize)) retVal=0; } fclose(stream); *pFilePtr=ptr; return retVal; } int main(int argc, char *argv[]) { int BlockSizeCompress=0x8000; int BlockSizeUncompress=0x8000; int cprLevel=Z_DEFAULT_COMPRESSION ; long lFileSize; unsigned char* FilePtr; long lBufferSizeCpr; long lBufferSizeUncpr; long lCompressedSize=0; unsigned char* CprPtr; unsigned char* UncprPtr; long lSizeCpr,lSizeUncpr; DWORD dwGetTick,dwMsecQP; LARGE_INTEGER li_qp,li_rdtsc,dwResRdtsc; if (argc<=1) { printf("run TestZlib [BlockSizeCompress] [BlockSizeUncompress] [compres. level]\n"); return 0; } if (ReadFileMemory(argv[1],&lFileSize,&FilePtr)==0) { printf("error reading %s\n",argv[1]); return 1; } else printf("file %s read, %u bytes\n",argv[1],lFileSize); if (argc>=3) BlockSizeCompress=atol(argv[2]); if (argc>=4) BlockSizeUncompress=atol(argv[3]); if (argc>=5) cprLevel=(int)atol(argv[4]); lBufferSizeCpr = lFileSize + (lFileSize/0x10) + 0x200; lBufferSizeUncpr = lBufferSizeCpr; CprPtr=(unsigned char*)malloc(lBufferSizeCpr + BlockSizeCompress); BeginCountPerfCounter(&li_qp,TRUE); dwGetTick=GetTickCount(); BeginCountRdtsc(&li_rdtsc); { z_stream zcpr; int ret=Z_OK; long lOrigToDo = lFileSize; long lOrigDone = 0; int step=0; memset(&zcpr,0,sizeof(z_stream)); deflateInit(&zcpr,cprLevel); zcpr.next_in = FilePtr; zcpr.next_out = CprPtr; do { long all_read_before = zcpr.total_in; zcpr.avail_in = min(lOrigToDo,BlockSizeCompress); zcpr.avail_out = BlockSizeCompress; ret=deflate(&zcpr,(zcpr.avail_in==lOrigToDo) ? Z_FINISH : Z_SYNC_FLUSH); lOrigDone += (zcpr.total_in-all_read_before); lOrigToDo -= (zcpr.total_in-all_read_before); step++; } while (ret==Z_OK); lSizeCpr=zcpr.total_out; deflateEnd(&zcpr); dwGetTick=GetTickCount()-dwGetTick; dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE); dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE); printf("total compress size = %u, in %u step\n",lSizeCpr,step); printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.); printf("defcpr time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.); printf("defcpr result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart); } CprPtr=(unsigned char*)realloc(CprPtr,lSizeCpr); UncprPtr=(unsigned char*)malloc(lBufferSizeUncpr + BlockSizeUncompress); BeginCountPerfCounter(&li_qp,TRUE); dwGetTick=GetTickCount(); BeginCountRdtsc(&li_rdtsc); { z_stream zcpr; int ret=Z_OK; long lOrigToDo = lSizeCpr; long lOrigDone = 0; int step=0; memset(&zcpr,0,sizeof(z_stream)); inflateInit(&zcpr); zcpr.next_in = CprPtr; zcpr.next_out = UncprPtr; do { long all_read_before = zcpr.total_in; zcpr.avail_in = min(lOrigToDo,BlockSizeUncompress); zcpr.avail_out = BlockSizeUncompress; ret=inflate(&zcpr,Z_SYNC_FLUSH); lOrigDone += (zcpr.total_in-all_read_before); lOrigToDo -= (zcpr.total_in-all_read_before); step++; } while (ret==Z_OK); lSizeUncpr=zcpr.total_out; inflateEnd(&zcpr); dwGetTick=GetTickCount()-dwGetTick; dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE); dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE); printf("total uncompress size = %u, in %u step\n",lSizeUncpr,step); printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.); printf("uncpr time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.); printf("uncpr result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart); } if (lSizeUncpr==lFileSize) { if (memcmp(FilePtr,UncprPtr,lFileSize)==0) printf("compare ok\n"); } return 0; } zlib-1.2.11.dfsg/contrib/minizip/0000755000175000017500000000000013162250104016443 5ustar brooniebrooniezlib-1.2.11.dfsg/contrib/minizip/iowin32.h0000644000175000017500000000152311336233350020114 0ustar brooniebroonie/* iowin32.h -- IO base function header for compress/uncompress .zip Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt */ #include #ifdef __cplusplus extern "C" { #endif void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def)); void fill_win32_filefunc64 OF((zlib_filefunc64_def* pzlib_filefunc_def)); void fill_win32_filefunc64A OF((zlib_filefunc64_def* pzlib_filefunc_def)); void fill_win32_filefunc64W OF((zlib_filefunc64_def* pzlib_filefunc_def)); #ifdef __cplusplus } #endif zlib-1.2.11.dfsg/contrib/minizip/make_vms.com0000644000175000017500000000160511336232230020750 0ustar brooniebroonie$ if f$search("ioapi.h_orig") .eqs. "" then copy ioapi.h ioapi.h_orig $ open/write zdef vmsdefs.h $ copy sys$input: zdef $ deck #define unix #define fill_zlib_filefunc64_32_def_from_filefunc32 fillzffunc64from #define Write_Zip64EndOfCentralDirectoryLocator Write_Zip64EoDLocator #define Write_Zip64EndOfCentralDirectoryRecord Write_Zip64EoDRecord #define Write_EndOfCentralDirectoryRecord Write_EoDRecord $ eod $ close zdef $ copy vmsdefs.h,ioapi.h_orig ioapi.h $ cc/include=[--]/prefix=all ioapi.c $ cc/include=[--]/prefix=all miniunz.c $ cc/include=[--]/prefix=all unzip.c $ cc/include=[--]/prefix=all minizip.c $ cc/include=[--]/prefix=all zip.c $ link miniunz,unzip,ioapi,[--]libz.olb/lib $ link minizip,zip,ioapi,[--]libz.olb/lib $ mcr []minizip test minizip_info.txt $ mcr []miniunz -l test.zip $ rename minizip_info.txt; minizip_info.txt_old $ mcr []miniunz test.zip $ delete test.zip;* $exit zlib-1.2.11.dfsg/contrib/minizip/configure.ac0000644000175000017500000000142313036730604020741 0ustar brooniebroonie# -*- Autoconf -*- # Process this file with autoconf to produce a configure script. AC_INIT([minizip], [1.2.11], [bugzilla.redhat.com]) AC_CONFIG_SRCDIR([minizip.c]) AM_INIT_AUTOMAKE([foreign]) LT_INIT AC_MSG_CHECKING([whether to build example programs]) AC_ARG_ENABLE([demos], AC_HELP_STRING([--enable-demos], [build example programs])) AM_CONDITIONAL([COND_DEMOS], [test "$enable_demos" = yes]) if test "$enable_demos" = yes then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) fi case "${host}" in *-mingw* | mingw*) WIN32="yes" ;; *) ;; esac AM_CONDITIONAL([WIN32], [test "${WIN32}" = "yes"]) AC_SUBST([HAVE_UNISTD_H], [0]) AC_CHECK_HEADER([unistd.h], [HAVE_UNISTD_H=1], []) AC_CONFIG_FILES([Makefile minizip.pc]) AC_OUTPUT zlib-1.2.11.dfsg/contrib/minizip/mztools.h0000644000175000017500000000130411706614353020335 0ustar brooniebroonie/* Additional tools for Minizip Code: Xavier Roche '2004 License: Same as ZLIB (www.gzip.org) */ #ifndef _zip_tools_H #define _zip_tools_H #ifdef __cplusplus extern "C" { #endif #ifndef _ZLIB_H #include "zlib.h" #endif #include "unzip.h" /* Repair a ZIP file (missing central directory) file: file to recover fileOut: output file after recovery fileOutTmp: temporary file name used for recovery */ extern int ZEXPORT unzRepair(const char* file, const char* fileOut, const char* fileOutTmp, uLong* nRecovered, uLong* bytesRecovered); #ifdef __cplusplus } #endif #endif zlib-1.2.11.dfsg/contrib/minizip/MiniZip64_info.txt0000644000175000017500000000575011336232700021762 0ustar brooniebroonieMiniZip - Copyright (c) 1998-2010 - by Gilles Vollant - version 1.1 64 bits from Mathias Svensson Introduction --------------------- MiniZip 1.1 is built from MiniZip 1.0 by Gilles Vollant ( http://www.winimage.com/zLibDll/minizip.html ) When adding ZIP64 support into minizip it would result into risk of breaking compatibility with minizip 1.0. All possible work was done for compatibility. Background --------------------- When adding ZIP64 support Mathias Svensson found that Even Rouault have added ZIP64 support for unzip.c into minizip for a open source project called gdal ( http://www.gdal.org/ ) That was used as a starting point. And after that ZIP64 support was added to zip.c some refactoring and code cleanup was also done. Changed from MiniZip 1.0 to MiniZip 1.1 --------------------------------------- * Added ZIP64 support for unzip ( by Even Rouault ) * Added ZIP64 support for zip ( by Mathias Svensson ) * Reverted some changed that Even Rouault did. * Bunch of patches received from Gulles Vollant that he received for MiniZip from various users. * Added unzip patch for BZIP Compression method (patch create by Daniel Borca) * Added BZIP Compress method for zip * Did some refactoring and code cleanup Credits Gilles Vollant - Original MiniZip author Even Rouault - ZIP64 unzip Support Daniel Borca - BZip Compression method support in unzip Mathias Svensson - ZIP64 zip support Mathias Svensson - BZip Compression method support in zip Resources ZipLayout http://result42.com/projects/ZipFileLayout Command line tool for Windows that shows the layout and information of the headers in a zip archive. Used when debugging and validating the creation of zip files using MiniZip64 ZIP App Note http://www.pkware.com/documents/casestudies/APPNOTE.TXT Zip File specification Notes. * To be able to use BZip compression method in zip64.c or unzip64.c the BZIP2 lib is needed and HAVE_BZIP2 need to be defined. License ---------------------------------------------------------- Condition of use and distribution are the same than zlib : This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. ---------------------------------------------------------- zlib-1.2.11.dfsg/contrib/minizip/Makefile.am0000644000175000017500000000146211734230525020512 0ustar brooniebroonielib_LTLIBRARIES = libminizip.la if COND_DEMOS bin_PROGRAMS = miniunzip minizip endif zlib_top_srcdir = $(top_srcdir)/../.. zlib_top_builddir = $(top_builddir)/../.. AM_CPPFLAGS = -I$(zlib_top_srcdir) AM_LDFLAGS = -L$(zlib_top_builddir) if WIN32 iowin32_src = iowin32.c iowin32_h = iowin32.h endif libminizip_la_SOURCES = \ ioapi.c \ mztools.c \ unzip.c \ zip.c \ ${iowin32_src} libminizip_la_LDFLAGS = $(AM_LDFLAGS) -version-info 1:0:0 -lz minizip_includedir = $(includedir)/minizip minizip_include_HEADERS = \ crypt.h \ ioapi.h \ mztools.h \ unzip.h \ zip.h \ ${iowin32_h} pkgconfigdir = $(libdir)/pkgconfig pkgconfig_DATA = minizip.pc EXTRA_PROGRAMS = miniunzip minizip miniunzip_SOURCES = miniunz.c miniunzip_LDADD = libminizip.la minizip_SOURCES = minizip.c minizip_LDADD = libminizip.la -lz zlib-1.2.11.dfsg/contrib/minizip/zip.c0000644000175000017500000020046213005413155017420 0ustar brooniebroonie/* zip.c -- IO on .zip files using zlib Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt Changes Oct-2009 - Mathias Svensson - Remove old C style function prototypes Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions. Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data It is used when recreting zip archive with RAW when deleting items from a zip. ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed. Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required) Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer */ #include #include #include #include #include "zlib.h" #include "zip.h" #ifdef STDC # include # include # include #endif #ifdef NO_ERRNO_H extern int errno; #else # include #endif #ifndef local # define local static #endif /* compile with -Dlocal if your debugger can't find static symbols */ #ifndef VERSIONMADEBY # define VERSIONMADEBY (0x0) /* platform depedent */ #endif #ifndef Z_BUFSIZE #define Z_BUFSIZE (64*1024) //(16384) #endif #ifndef Z_MAXFILENAMEINZIP #define Z_MAXFILENAMEINZIP (256) #endif #ifndef ALLOC # define ALLOC(size) (malloc(size)) #endif #ifndef TRYFREE # define TRYFREE(p) {if (p) free(p);} #endif /* #define SIZECENTRALDIRITEM (0x2e) #define SIZEZIPLOCALHEADER (0x1e) */ /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ // NOT sure that this work on ALL platform #define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsigned long)(b))) << 32)) #ifndef SEEK_CUR #define SEEK_CUR 1 #endif #ifndef SEEK_END #define SEEK_END 2 #endif #ifndef SEEK_SET #define SEEK_SET 0 #endif #ifndef DEF_MEM_LEVEL #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif #endif const char zip_copyright[] =" zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; #define SIZEDATA_INDATABLOCK (4096-(4*4)) #define LOCALHEADERMAGIC (0x04034b50) #define CENTRALHEADERMAGIC (0x02014b50) #define ENDHEADERMAGIC (0x06054b50) #define ZIP64ENDHEADERMAGIC (0x6064b50) #define ZIP64ENDLOCHEADERMAGIC (0x7064b50) #define FLAG_LOCALHEADER_OFFSET (0x06) #define CRC_LOCALHEADER_OFFSET (0x0e) #define SIZECENTRALHEADER (0x2e) /* 46 */ typedef struct linkedlist_datablock_internal_s { struct linkedlist_datablock_internal_s* next_datablock; uLong avail_in_this_block; uLong filled_in_this_block; uLong unused; /* for future use and alignment */ unsigned char data[SIZEDATA_INDATABLOCK]; } linkedlist_datablock_internal; typedef struct linkedlist_data_s { linkedlist_datablock_internal* first_block; linkedlist_datablock_internal* last_block; } linkedlist_data; typedef struct { z_stream stream; /* zLib stream structure for inflate */ #ifdef HAVE_BZIP2 bz_stream bstream; /* bzLib stream structure for bziped */ #endif int stream_initialised; /* 1 is stream is initialised */ uInt pos_in_buffered_data; /* last written byte in buffered_data */ ZPOS64_T pos_local_header; /* offset of the local header of the file currenty writing */ char* central_header; /* central header data for the current file */ uLong size_centralExtra; uLong size_centralheader; /* size of the central header for cur file */ uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader but that are not used */ uLong flag; /* flag of the file currently writing */ int method; /* compression method of file currenty wr.*/ int raw; /* 1 for directly writing raw data */ Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/ uLong dosDate; uLong crc32; int encrypt; int zip64; /* Add ZIP64 extened information in the extra field */ ZPOS64_T pos_zip64extrainfo; ZPOS64_T totalCompressedData; ZPOS64_T totalUncompressedData; #ifndef NOCRYPT unsigned long keys[3]; /* keys defining the pseudo-random sequence */ const z_crc_t* pcrc_32_tab; int crypt_header_size; #endif } curfile64_info; typedef struct { zlib_filefunc64_32_def z_filefunc; voidpf filestream; /* io structore of the zipfile */ linkedlist_data central_dir;/* datablock with central dir in construction*/ int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/ curfile64_info ci; /* info on the file curretly writing */ ZPOS64_T begin_pos; /* position of the beginning of the zipfile */ ZPOS64_T add_position_when_writing_offset; ZPOS64_T number_entry; #ifndef NO_ADDFILEINEXISTINGZIP char *globalcomment; #endif } zip64_internal; #ifndef NOCRYPT #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED #include "crypt.h" #endif local linkedlist_datablock_internal* allocate_new_datablock() { linkedlist_datablock_internal* ldi; ldi = (linkedlist_datablock_internal*) ALLOC(sizeof(linkedlist_datablock_internal)); if (ldi!=NULL) { ldi->next_datablock = NULL ; ldi->filled_in_this_block = 0 ; ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ; } return ldi; } local void free_datablock(linkedlist_datablock_internal* ldi) { while (ldi!=NULL) { linkedlist_datablock_internal* ldinext = ldi->next_datablock; TRYFREE(ldi); ldi = ldinext; } } local void init_linkedlist(linkedlist_data* ll) { ll->first_block = ll->last_block = NULL; } local void free_linkedlist(linkedlist_data* ll) { free_datablock(ll->first_block); ll->first_block = ll->last_block = NULL; } local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) { linkedlist_datablock_internal* ldi; const unsigned char* from_copy; if (ll==NULL) return ZIP_INTERNALERROR; if (ll->last_block == NULL) { ll->first_block = ll->last_block = allocate_new_datablock(); if (ll->first_block == NULL) return ZIP_INTERNALERROR; } ldi = ll->last_block; from_copy = (unsigned char*)buf; while (len>0) { uInt copy_this; uInt i; unsigned char* to_copy; if (ldi->avail_in_this_block==0) { ldi->next_datablock = allocate_new_datablock(); if (ldi->next_datablock == NULL) return ZIP_INTERNALERROR; ldi = ldi->next_datablock ; ll->last_block = ldi; } if (ldi->avail_in_this_block < len) copy_this = (uInt)ldi->avail_in_this_block; else copy_this = (uInt)len; to_copy = &(ldi->data[ldi->filled_in_this_block]); for (i=0;ifilled_in_this_block += copy_this; ldi->avail_in_this_block -= copy_this; from_copy += copy_this ; len -= copy_this; } return ZIP_OK; } /****************************************************************************/ #ifndef NO_ADDFILEINEXISTINGZIP /* =========================================================================== Inputs a long in LSB order to the given file nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T) */ local int zip64local_putValue OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte)); local int zip64local_putValue (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte) { unsigned char buf[8]; int n; for (n = 0; n < nbByte; n++) { buf[n] = (unsigned char)(x & 0xff); x >>= 8; } if (x != 0) { /* data overflow - hack for ZIP64 (X Roche) */ for (n = 0; n < nbByte; n++) { buf[n] = 0xff; } } if (ZWRITE64(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte) return ZIP_ERRNO; else return ZIP_OK; } local void zip64local_putValue_inmemory OF((void* dest, ZPOS64_T x, int nbByte)); local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte) { unsigned char* buf=(unsigned char*)dest; int n; for (n = 0; n < nbByte; n++) { buf[n] = (unsigned char)(x & 0xff); x >>= 8; } if (x != 0) { /* data overflow - hack for ZIP64 */ for (n = 0; n < nbByte; n++) { buf[n] = 0xff; } } } /****************************************************************************/ local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm) { uLong year = (uLong)ptm->tm_year; if (year>=1980) year-=1980; else if (year>=80) year-=80; return (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) | ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour)); } /****************************************************************************/ local int zip64local_getByte OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi)); local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def,voidpf filestream,int* pi) { unsigned char c; int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1); if (err==1) { *pi = (int)c; return ZIP_OK; } else { if (ZERROR64(*pzlib_filefunc_def,filestream)) return ZIP_ERRNO; else return ZIP_EOF; } } /* =========================================================================== Reads a long in LSB order from the given gz_stream. Sets */ local int zip64local_getShort OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX)); local int zip64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) { uLong x ; int i = 0; int err; err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x = (uLong)i; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((uLong)i)<<8; if (err==ZIP_OK) *pX = x; else *pX = 0; return err; } local int zip64local_getLong OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX)); local int zip64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) { uLong x ; int i = 0; int err; err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x = (uLong)i; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((uLong)i)<<8; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((uLong)i)<<16; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((uLong)i)<<24; if (err==ZIP_OK) *pX = x; else *pX = 0; return err; } local int zip64local_getLong64 OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX)); local int zip64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX) { ZPOS64_T x; int i = 0; int err; err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x = (ZPOS64_T)i; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<8; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<16; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<24; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<32; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<40; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<48; if (err==ZIP_OK) err = zip64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((ZPOS64_T)i)<<56; if (err==ZIP_OK) *pX = x; else *pX = 0; return err; } #ifndef BUFREADCOMMENT #define BUFREADCOMMENT (0x400) #endif /* Locate the Central directory of a zipfile (at the end, just before the global comment) */ local ZPOS64_T zip64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { unsigned char* buf; ZPOS64_T uSizeFile; ZPOS64_T uBackRead; ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ ZPOS64_T uPosFound=0; if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) return 0; uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); if (uMaxBack>uSizeFile) uMaxBack = uSizeFile; buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); if (buf==NULL) return 0; uBackRead = 4; while (uBackReaduMaxBack) uBackRead = uMaxBack; else uBackRead+=BUFREADCOMMENT; uReadPos = uSizeFile-uBackRead ; uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) break; if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) break; for (i=(int)uReadSize-3; (i--)>0;) if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) { uPosFound = uReadPos+i; break; } if (uPosFound!=0) break; } TRYFREE(buf); return uPosFound; } /* Locate the End of Zip64 Central directory locator and from there find the CD of a zipfile (at the end, just before the global comment) */ local ZPOS64_T zip64local_SearchCentralDir64 OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { unsigned char* buf; ZPOS64_T uSizeFile; ZPOS64_T uBackRead; ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ ZPOS64_T uPosFound=0; uLong uL; ZPOS64_T relativeOffset; if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) return 0; uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); if (uMaxBack>uSizeFile) uMaxBack = uSizeFile; buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); if (buf==NULL) return 0; uBackRead = 4; while (uBackReaduMaxBack) uBackRead = uMaxBack; else uBackRead+=BUFREADCOMMENT; uReadPos = uSizeFile-uBackRead ; uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) break; if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) break; for (i=(int)uReadSize-3; (i--)>0;) { // Signature "0x07064b50" Zip64 end of central directory locater if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07)) { uPosFound = uReadPos+i; break; } } if (uPosFound!=0) break; } TRYFREE(buf); if (uPosFound == 0) return 0; /* Zip64 end of central directory locator */ if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0) return 0; /* the signature, already checked */ if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) return 0; /* number of the disk with the start of the zip64 end of central directory */ if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) return 0; if (uL != 0) return 0; /* relative offset of the zip64 end of central directory record */ if (zip64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=ZIP_OK) return 0; /* total number of disks */ if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) return 0; if (uL != 1) return 0; /* Goto Zip64 end of central directory record */ if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0) return 0; /* the signature */ if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK) return 0; if (uL != 0x06064b50) // signature of 'Zip64 end of central directory' return 0; return relativeOffset; } int LoadCentralDirectoryRecord(zip64_internal* pziinit) { int err=ZIP_OK; ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ ZPOS64_T size_central_dir; /* size of the central directory */ ZPOS64_T offset_central_dir; /* offset of start of central directory */ ZPOS64_T central_pos; uLong uL; uLong number_disk; /* number of the current dist, used for spaning ZIP, unsupported, always 0*/ uLong number_disk_with_CD; /* number the the disk with central dir, used for spaning ZIP, unsupported, always 0*/ ZPOS64_T number_entry; ZPOS64_T number_entry_CD; /* total number of entries in the central dir (same than number_entry on nospan) */ uLong VersionMadeBy; uLong VersionNeeded; uLong size_comment; int hasZIP64Record = 0; // check first if we find a ZIP64 record central_pos = zip64local_SearchCentralDir64(&pziinit->z_filefunc,pziinit->filestream); if(central_pos > 0) { hasZIP64Record = 1; } else if(central_pos == 0) { central_pos = zip64local_SearchCentralDir(&pziinit->z_filefunc,pziinit->filestream); } /* disable to allow appending to empty ZIP archive if (central_pos==0) err=ZIP_ERRNO; */ if(hasZIP64Record) { ZPOS64_T sizeEndOfCentralDirectory; if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0) err=ZIP_ERRNO; /* the signature, already checked */ if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK) err=ZIP_ERRNO; /* size of zip64 end of central directory record */ if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &sizeEndOfCentralDirectory)!=ZIP_OK) err=ZIP_ERRNO; /* version made by */ if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionMadeBy)!=ZIP_OK) err=ZIP_ERRNO; /* version needed to extract */ if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionNeeded)!=ZIP_OK) err=ZIP_ERRNO; /* number of this disk */ if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK) err=ZIP_ERRNO; /* number of the disk with the start of the central directory */ if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK) err=ZIP_ERRNO; /* total number of entries in the central directory on this disk */ if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &number_entry)!=ZIP_OK) err=ZIP_ERRNO; /* total number of entries in the central directory */ if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&number_entry_CD)!=ZIP_OK) err=ZIP_ERRNO; if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0)) err=ZIP_BADZIPFILE; /* size of the central directory */ if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&size_central_dir)!=ZIP_OK) err=ZIP_ERRNO; /* offset of start of central directory with respect to the starting disk number */ if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&offset_central_dir)!=ZIP_OK) err=ZIP_ERRNO; // TODO.. // read the comment from the standard central header. size_comment = 0; } else { // Read End of central Directory info if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) err=ZIP_ERRNO; /* the signature, already checked */ if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK) err=ZIP_ERRNO; /* number of this disk */ if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK) err=ZIP_ERRNO; /* number of the disk with the start of the central directory */ if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK) err=ZIP_ERRNO; /* total number of entries in the central dir on this disk */ number_entry = 0; if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK) err=ZIP_ERRNO; else number_entry = uL; /* total number of entries in the central dir */ number_entry_CD = 0; if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK) err=ZIP_ERRNO; else number_entry_CD = uL; if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0)) err=ZIP_BADZIPFILE; /* size of the central directory */ size_central_dir = 0; if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK) err=ZIP_ERRNO; else size_central_dir = uL; /* offset of start of central directory with respect to the starting disk number */ offset_central_dir = 0; if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK) err=ZIP_ERRNO; else offset_central_dir = uL; /* zipfile global comment length */ if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &size_comment)!=ZIP_OK) err=ZIP_ERRNO; } if ((central_posz_filefunc, pziinit->filestream); return ZIP_ERRNO; } if (size_comment>0) { pziinit->globalcomment = (char*)ALLOC(size_comment+1); if (pziinit->globalcomment) { size_comment = ZREAD64(pziinit->z_filefunc, pziinit->filestream, pziinit->globalcomment,size_comment); pziinit->globalcomment[size_comment]=0; } } byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir); pziinit->add_position_when_writing_offset = byte_before_the_zipfile; { ZPOS64_T size_central_dir_to_read = size_central_dir; size_t buf_size = SIZEDATA_INDATABLOCK; void* buf_read = (void*)ALLOC(buf_size); if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir + byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0) err=ZIP_ERRNO; while ((size_central_dir_to_read>0) && (err==ZIP_OK)) { ZPOS64_T read_this = SIZEDATA_INDATABLOCK; if (read_this > size_central_dir_to_read) read_this = size_central_dir_to_read; if (ZREAD64(pziinit->z_filefunc, pziinit->filestream,buf_read,(uLong)read_this) != read_this) err=ZIP_ERRNO; if (err==ZIP_OK) err = add_data_in_datablock(&pziinit->central_dir,buf_read, (uLong)read_this); size_central_dir_to_read-=read_this; } TRYFREE(buf_read); } pziinit->begin_pos = byte_before_the_zipfile; pziinit->number_entry = number_entry_CD; if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET) != 0) err=ZIP_ERRNO; return err; } #endif /* !NO_ADDFILEINEXISTINGZIP*/ /************************************************************/ extern zipFile ZEXPORT zipOpen3 (const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def) { zip64_internal ziinit; zip64_internal* zi; int err=ZIP_OK; ziinit.z_filefunc.zseek32_file = NULL; ziinit.z_filefunc.ztell32_file = NULL; if (pzlib_filefunc64_32_def==NULL) fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64); else ziinit.z_filefunc = *pzlib_filefunc64_32_def; ziinit.filestream = ZOPEN64(ziinit.z_filefunc, pathname, (append == APPEND_STATUS_CREATE) ? (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) : (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING)); if (ziinit.filestream == NULL) return NULL; if (append == APPEND_STATUS_CREATEAFTER) ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END); ziinit.begin_pos = ZTELL64(ziinit.z_filefunc,ziinit.filestream); ziinit.in_opened_file_inzip = 0; ziinit.ci.stream_initialised = 0; ziinit.number_entry = 0; ziinit.add_position_when_writing_offset = 0; init_linkedlist(&(ziinit.central_dir)); zi = (zip64_internal*)ALLOC(sizeof(zip64_internal)); if (zi==NULL) { ZCLOSE64(ziinit.z_filefunc,ziinit.filestream); return NULL; } /* now we add file in a zipfile */ # ifndef NO_ADDFILEINEXISTINGZIP ziinit.globalcomment = NULL; if (append == APPEND_STATUS_ADDINZIP) { // Read and Cache Central Directory Records err = LoadCentralDirectoryRecord(&ziinit); } if (globalcomment) { *globalcomment = ziinit.globalcomment; } # endif /* !NO_ADDFILEINEXISTINGZIP*/ if (err != ZIP_OK) { # ifndef NO_ADDFILEINEXISTINGZIP TRYFREE(ziinit.globalcomment); # endif /* !NO_ADDFILEINEXISTINGZIP*/ TRYFREE(zi); return NULL; } else { *zi = ziinit; return (zipFile)zi; } } extern zipFile ZEXPORT zipOpen2 (const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc32_def) { if (pzlib_filefunc32_def != NULL) { zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def); return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill); } else return zipOpen3(pathname, append, globalcomment, NULL); } extern zipFile ZEXPORT zipOpen2_64 (const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def) { if (pzlib_filefunc_def != NULL) { zlib_filefunc64_32_def zlib_filefunc64_32_def_fill; zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def; zlib_filefunc64_32_def_fill.ztell32_file = NULL; zlib_filefunc64_32_def_fill.zseek32_file = NULL; return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill); } else return zipOpen3(pathname, append, globalcomment, NULL); } extern zipFile ZEXPORT zipOpen (const char* pathname, int append) { return zipOpen3((const void*)pathname,append,NULL,NULL); } extern zipFile ZEXPORT zipOpen64 (const void* pathname, int append) { return zipOpen3(pathname,append,NULL,NULL); } int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_extrafield_local, const void* extrafield_local) { /* write the local header */ int err; uInt size_filename = (uInt)strlen(filename); uInt size_extrafield = size_extrafield_local; err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC, 4); if (err==ZIP_OK) { if(zi->ci.zip64) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);/* version needed to extract */ else err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */ } if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2); if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2); if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4); // CRC / Compressed size / Uncompressed size will be filled in later and rewritten later if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */ if (err==ZIP_OK) { if(zi->ci.zip64) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* compressed size, unknown */ else err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */ } if (err==ZIP_OK) { if(zi->ci.zip64) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* uncompressed size, unknown */ else err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */ } if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2); if(zi->ci.zip64) { size_extrafield += 20; } if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield,2); if ((err==ZIP_OK) && (size_filename > 0)) { if (ZWRITE64(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename) err = ZIP_ERRNO; } if ((err==ZIP_OK) && (size_extrafield_local > 0)) { if (ZWRITE64(zi->z_filefunc, zi->filestream, extrafield_local, size_extrafield_local) != size_extrafield_local) err = ZIP_ERRNO; } if ((err==ZIP_OK) && (zi->ci.zip64)) { // write the Zip64 extended info short HeaderID = 1; short DataSize = 16; ZPOS64_T CompressedSize = 0; ZPOS64_T UncompressedSize = 0; // Remember position of Zip64 extended info for the local file header. (needed when we update size after done with file) zi->ci.pos_zip64extrainfo = ZTELL64(zi->z_filefunc,zi->filestream); err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)HeaderID,2); err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)DataSize,2); err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)UncompressedSize,8); err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)CompressedSize,8); } return err; } /* NOTE. When writing RAW the ZIP64 extended information in extrafield_local and extrafield_global needs to be stripped before calling this function it can be done with zipRemoveExtraInfoBlock It is not done here because then we need to realloc a new buffer since parameters are 'const' and I want to minimize unnecessary allocations. */ extern int ZEXPORT zipOpenNewFileInZip4_64 (zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase, int zip64) { zip64_internal* zi; uInt size_filename; uInt size_comment; uInt i; int err = ZIP_OK; # ifdef NOCRYPT (crcForCrypting); if (password != NULL) return ZIP_PARAMERROR; # endif if (file == NULL) return ZIP_PARAMERROR; #ifdef HAVE_BZIP2 if ((method!=0) && (method!=Z_DEFLATED) && (method!=Z_BZIP2ED)) return ZIP_PARAMERROR; #else if ((method!=0) && (method!=Z_DEFLATED)) return ZIP_PARAMERROR; #endif zi = (zip64_internal*)file; if (zi->in_opened_file_inzip == 1) { err = zipCloseFileInZip (file); if (err != ZIP_OK) return err; } if (filename==NULL) filename="-"; if (comment==NULL) size_comment = 0; else size_comment = (uInt)strlen(comment); size_filename = (uInt)strlen(filename); if (zipfi == NULL) zi->ci.dosDate = 0; else { if (zipfi->dosDate != 0) zi->ci.dosDate = zipfi->dosDate; else zi->ci.dosDate = zip64local_TmzDateToDosDate(&zipfi->tmz_date); } zi->ci.flag = flagBase; if ((level==8) || (level==9)) zi->ci.flag |= 2; if (level==2) zi->ci.flag |= 4; if (level==1) zi->ci.flag |= 6; if (password != NULL) zi->ci.flag |= 1; zi->ci.crc32 = 0; zi->ci.method = method; zi->ci.encrypt = 0; zi->ci.stream_initialised = 0; zi->ci.pos_in_buffered_data = 0; zi->ci.raw = raw; zi->ci.pos_local_header = ZTELL64(zi->z_filefunc,zi->filestream); zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafield_global + size_comment; zi->ci.size_centralExtraFree = 32; // Extra space we have reserved in case we need to add ZIP64 extra info data zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralExtraFree); zi->ci.size_centralExtra = size_extrafield_global; zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4); /* version info */ zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)versionMadeBy,2); zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2); zip64local_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2); zip64local_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2); zip64local_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4); zip64local_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/ zip64local_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/ zip64local_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/ zip64local_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2); zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2); zip64local_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2); zip64local_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/ if (zipfi==NULL) zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2); else zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2); if (zipfi==NULL) zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4); else zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4); if(zi->ci.pos_local_header >= 0xffffffff) zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)0xffffffff,4); else zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header - zi->add_position_when_writing_offset,4); for (i=0;ici.central_header+SIZECENTRALHEADER+i) = *(filename+i); for (i=0;ici.central_header+SIZECENTRALHEADER+size_filename+i) = *(((const char*)extrafield_global)+i); for (i=0;ici.central_header+SIZECENTRALHEADER+size_filename+ size_extrafield_global+i) = *(comment+i); if (zi->ci.central_header == NULL) return ZIP_INTERNALERROR; zi->ci.zip64 = zip64; zi->ci.totalCompressedData = 0; zi->ci.totalUncompressedData = 0; zi->ci.pos_zip64extrainfo = 0; err = Write_LocalFileHeader(zi, filename, size_extrafield_local, extrafield_local); #ifdef HAVE_BZIP2 zi->ci.bstream.avail_in = (uInt)0; zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; zi->ci.bstream.total_in_hi32 = 0; zi->ci.bstream.total_in_lo32 = 0; zi->ci.bstream.total_out_hi32 = 0; zi->ci.bstream.total_out_lo32 = 0; #endif zi->ci.stream.avail_in = (uInt)0; zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; zi->ci.stream.next_out = zi->ci.buffered_data; zi->ci.stream.total_in = 0; zi->ci.stream.total_out = 0; zi->ci.stream.data_type = Z_BINARY; #ifdef HAVE_BZIP2 if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED || zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) #else if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) #endif { if(zi->ci.method == Z_DEFLATED) { zi->ci.stream.zalloc = (alloc_func)0; zi->ci.stream.zfree = (free_func)0; zi->ci.stream.opaque = (voidpf)0; if (windowBits>0) windowBits = -windowBits; err = deflateInit2(&zi->ci.stream, level, Z_DEFLATED, windowBits, memLevel, strategy); if (err==Z_OK) zi->ci.stream_initialised = Z_DEFLATED; } else if(zi->ci.method == Z_BZIP2ED) { #ifdef HAVE_BZIP2 // Init BZip stuff here zi->ci.bstream.bzalloc = 0; zi->ci.bstream.bzfree = 0; zi->ci.bstream.opaque = (voidpf)0; err = BZ2_bzCompressInit(&zi->ci.bstream, level, 0,35); if(err == BZ_OK) zi->ci.stream_initialised = Z_BZIP2ED; #endif } } # ifndef NOCRYPT zi->ci.crypt_header_size = 0; if ((err==Z_OK) && (password != NULL)) { unsigned char bufHead[RAND_HEAD_LEN]; unsigned int sizeHead; zi->ci.encrypt = 1; zi->ci.pcrc_32_tab = get_crc_table(); /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/ sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting); zi->ci.crypt_header_size = sizeHead; if (ZWRITE64(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead) err = ZIP_ERRNO; } # endif if (err==Z_OK) zi->in_opened_file_inzip = 1; return err; } extern int ZEXPORT zipOpenNewFileInZip4 (zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, raw, windowBits, memLevel, strategy, password, crcForCrypting, versionMadeBy, flagBase, 0); } extern int ZEXPORT zipOpenNewFileInZip3 (zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, raw, windowBits, memLevel, strategy, password, crcForCrypting, VERSIONMADEBY, 0, 0); } extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits,int memLevel, int strategy, const char* password, uLong crcForCrypting, int zip64) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, raw, windowBits, memLevel, strategy, password, crcForCrypting, VERSIONMADEBY, 0, zip64); } extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, raw, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, NULL, 0, VERSIONMADEBY, 0, 0); } extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int zip64) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, raw, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, NULL, 0, VERSIONMADEBY, 0, zip64); } extern int ZEXPORT zipOpenNewFileInZip64 (zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void*extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int zip64) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, 0, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, NULL, 0, VERSIONMADEBY, 0, zip64); } extern int ZEXPORT zipOpenNewFileInZip (zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void*extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level) { return zipOpenNewFileInZip4_64 (file, filename, zipfi, extrafield_local, size_extrafield_local, extrafield_global, size_extrafield_global, comment, method, level, 0, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, NULL, 0, VERSIONMADEBY, 0, 0); } local int zip64FlushWriteBuffer(zip64_internal* zi) { int err=ZIP_OK; if (zi->ci.encrypt != 0) { #ifndef NOCRYPT uInt i; int t; for (i=0;ici.pos_in_buffered_data;i++) zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab, zi->ci.buffered_data[i],t); #endif } if (ZWRITE64(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data) != zi->ci.pos_in_buffered_data) err = ZIP_ERRNO; zi->ci.totalCompressedData += zi->ci.pos_in_buffered_data; #ifdef HAVE_BZIP2 if(zi->ci.method == Z_BZIP2ED) { zi->ci.totalUncompressedData += zi->ci.bstream.total_in_lo32; zi->ci.bstream.total_in_lo32 = 0; zi->ci.bstream.total_in_hi32 = 0; } else #endif { zi->ci.totalUncompressedData += zi->ci.stream.total_in; zi->ci.stream.total_in = 0; } zi->ci.pos_in_buffered_data = 0; return err; } extern int ZEXPORT zipWriteInFileInZip (zipFile file,const void* buf,unsigned int len) { zip64_internal* zi; int err=ZIP_OK; if (file == NULL) return ZIP_PARAMERROR; zi = (zip64_internal*)file; if (zi->in_opened_file_inzip == 0) return ZIP_PARAMERROR; zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len); #ifdef HAVE_BZIP2 if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw)) { zi->ci.bstream.next_in = (void*)buf; zi->ci.bstream.avail_in = len; err = BZ_RUN_OK; while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0)) { if (zi->ci.bstream.avail_out == 0) { if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) err = ZIP_ERRNO; zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; } if(err != BZ_RUN_OK) break; if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) { uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32; // uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32; err=BZ2_bzCompress(&zi->ci.bstream, BZ_RUN); zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore_lo) ; } } if(err == BZ_RUN_OK) err = ZIP_OK; } else #endif { zi->ci.stream.next_in = (Bytef*)buf; zi->ci.stream.avail_in = len; while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0)) { if (zi->ci.stream.avail_out == 0) { if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) err = ZIP_ERRNO; zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; zi->ci.stream.next_out = zi->ci.buffered_data; } if(err != ZIP_OK) break; if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) { uLong uTotalOutBefore = zi->ci.stream.total_out; err=deflate(&zi->ci.stream, Z_NO_FLUSH); if(uTotalOutBefore > zi->ci.stream.total_out) { int bBreak = 0; bBreak++; } zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ; } else { uInt copy_this,i; if (zi->ci.stream.avail_in < zi->ci.stream.avail_out) copy_this = zi->ci.stream.avail_in; else copy_this = zi->ci.stream.avail_out; for (i = 0; i < copy_this; i++) *(((char*)zi->ci.stream.next_out)+i) = *(((const char*)zi->ci.stream.next_in)+i); { zi->ci.stream.avail_in -= copy_this; zi->ci.stream.avail_out-= copy_this; zi->ci.stream.next_in+= copy_this; zi->ci.stream.next_out+= copy_this; zi->ci.stream.total_in+= copy_this; zi->ci.stream.total_out+= copy_this; zi->ci.pos_in_buffered_data += copy_this; } } }// while(...) } return err; } extern int ZEXPORT zipCloseFileInZipRaw (zipFile file, uLong uncompressed_size, uLong crc32) { return zipCloseFileInZipRaw64 (file, uncompressed_size, crc32); } extern int ZEXPORT zipCloseFileInZipRaw64 (zipFile file, ZPOS64_T uncompressed_size, uLong crc32) { zip64_internal* zi; ZPOS64_T compressed_size; uLong invalidValue = 0xffffffff; short datasize = 0; int err=ZIP_OK; if (file == NULL) return ZIP_PARAMERROR; zi = (zip64_internal*)file; if (zi->in_opened_file_inzip == 0) return ZIP_PARAMERROR; zi->ci.stream.avail_in = 0; if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) { while (err==ZIP_OK) { uLong uTotalOutBefore; if (zi->ci.stream.avail_out == 0) { if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) err = ZIP_ERRNO; zi->ci.stream.avail_out = (uInt)Z_BUFSIZE; zi->ci.stream.next_out = zi->ci.buffered_data; } uTotalOutBefore = zi->ci.stream.total_out; err=deflate(&zi->ci.stream, Z_FINISH); zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ; } } else if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) { #ifdef HAVE_BZIP2 err = BZ_FINISH_OK; while (err==BZ_FINISH_OK) { uLong uTotalOutBefore; if (zi->ci.bstream.avail_out == 0) { if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO) err = ZIP_ERRNO; zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE; zi->ci.bstream.next_out = (char*)zi->ci.buffered_data; } uTotalOutBefore = zi->ci.bstream.total_out_lo32; err=BZ2_bzCompress(&zi->ci.bstream, BZ_FINISH); if(err == BZ_STREAM_END) err = Z_STREAM_END; zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore); } if(err == BZ_FINISH_OK) err = ZIP_OK; #endif } if (err==Z_STREAM_END) err=ZIP_OK; /* this is normal */ if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK)) { if (zip64FlushWriteBuffer(zi)==ZIP_ERRNO) err = ZIP_ERRNO; } if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw)) { int tmp_err = deflateEnd(&zi->ci.stream); if (err == ZIP_OK) err = tmp_err; zi->ci.stream_initialised = 0; } #ifdef HAVE_BZIP2 else if((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw)) { int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream); if (err==ZIP_OK) err = tmperr; zi->ci.stream_initialised = 0; } #endif if (!zi->ci.raw) { crc32 = (uLong)zi->ci.crc32; uncompressed_size = zi->ci.totalUncompressedData; } compressed_size = zi->ci.totalCompressedData; # ifndef NOCRYPT compressed_size += zi->ci.crypt_header_size; # endif // update Current Item crc and sizes, if(compressed_size >= 0xffffffff || uncompressed_size >= 0xffffffff || zi->ci.pos_local_header >= 0xffffffff) { /*version Made by*/ zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)45,2); /*version needed*/ zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)45,2); } zip64local_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/ if(compressed_size >= 0xffffffff) zip64local_putValue_inmemory(zi->ci.central_header+20, invalidValue,4); /*compr size*/ else zip64local_putValue_inmemory(zi->ci.central_header+20, compressed_size,4); /*compr size*/ /// set internal file attributes field if (zi->ci.stream.data_type == Z_ASCII) zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2); if(uncompressed_size >= 0xffffffff) zip64local_putValue_inmemory(zi->ci.central_header+24, invalidValue,4); /*uncompr size*/ else zip64local_putValue_inmemory(zi->ci.central_header+24, uncompressed_size,4); /*uncompr size*/ // Add ZIP64 extra info field for uncompressed size if(uncompressed_size >= 0xffffffff) datasize += 8; // Add ZIP64 extra info field for compressed size if(compressed_size >= 0xffffffff) datasize += 8; // Add ZIP64 extra info field for relative offset to local file header of current file if(zi->ci.pos_local_header >= 0xffffffff) datasize += 8; if(datasize > 0) { char* p = NULL; if((uLong)(datasize + 4) > zi->ci.size_centralExtraFree) { // we can not write more data to the buffer that we have room for. return ZIP_BADZIPFILE; } p = zi->ci.central_header + zi->ci.size_centralheader; // Add Extra Information Header for 'ZIP64 information' zip64local_putValue_inmemory(p, 0x0001, 2); // HeaderID p += 2; zip64local_putValue_inmemory(p, datasize, 2); // DataSize p += 2; if(uncompressed_size >= 0xffffffff) { zip64local_putValue_inmemory(p, uncompressed_size, 8); p += 8; } if(compressed_size >= 0xffffffff) { zip64local_putValue_inmemory(p, compressed_size, 8); p += 8; } if(zi->ci.pos_local_header >= 0xffffffff) { zip64local_putValue_inmemory(p, zi->ci.pos_local_header, 8); p += 8; } // Update how much extra free space we got in the memory buffer // and increase the centralheader size so the new ZIP64 fields are included // ( 4 below is the size of HeaderID and DataSize field ) zi->ci.size_centralExtraFree -= datasize + 4; zi->ci.size_centralheader += datasize + 4; // Update the extra info size field zi->ci.size_centralExtra += datasize + 4; zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)zi->ci.size_centralExtra,2); } if (err==ZIP_OK) err = add_data_in_datablock(&zi->central_dir, zi->ci.central_header, (uLong)zi->ci.size_centralheader); free(zi->ci.central_header); if (err==ZIP_OK) { // Update the LocalFileHeader with the new values. ZPOS64_T cur_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream); if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0) err = ZIP_ERRNO; if (err==ZIP_OK) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */ if(uncompressed_size >= 0xffffffff || compressed_size >= 0xffffffff ) { if(zi->ci.pos_zip64extrainfo > 0) { // Update the size in the ZIP64 extended field. if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_zip64extrainfo + 4,ZLIB_FILEFUNC_SEEK_SET)!=0) err = ZIP_ERRNO; if (err==ZIP_OK) /* compressed size, unknown */ err = zip64local_putValue(&zi->z_filefunc, zi->filestream, uncompressed_size, 8); if (err==ZIP_OK) /* uncompressed size, unknown */ err = zip64local_putValue(&zi->z_filefunc, zi->filestream, compressed_size, 8); } else err = ZIP_BADZIPFILE; // Caller passed zip64 = 0, so no room for zip64 info -> fatal } else { if (err==ZIP_OK) /* compressed size, unknown */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4); if (err==ZIP_OK) /* uncompressed size, unknown */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4); } if (ZSEEK64(zi->z_filefunc,zi->filestream, cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0) err = ZIP_ERRNO; } zi->number_entry ++; zi->in_opened_file_inzip = 0; return err; } extern int ZEXPORT zipCloseFileInZip (zipFile file) { return zipCloseFileInZipRaw (file,0,0); } int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eocd_pos_inzip) { int err = ZIP_OK; ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writing_offset; err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDLOCHEADERMAGIC,4); /*num disks*/ if (err==ZIP_OK) /* number of the disk with the start of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /*relative offset*/ if (err==ZIP_OK) /* Relative offset to the Zip64EndOfCentralDirectory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream, pos,8); /*total disks*/ /* Do not support spawning of disk so always say 1 here*/ if (err==ZIP_OK) /* number of the disk with the start of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)1,4); return err; } int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) { int err = ZIP_OK; uLong Zip64DataSize = 44; err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDHEADERMAGIC,4); if (err==ZIP_OK) /* size of this 'zip64 end of central directory' */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)Zip64DataSize,8); // why ZPOS64_T of this ? if (err==ZIP_OK) /* version made by */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2); if (err==ZIP_OK) /* version needed */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2); if (err==ZIP_OK) /* number of this disk */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); if (err==ZIP_OK) /* number of the disk with the start of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); if (err==ZIP_OK) /* total number of entries in the central dir on this disk */ err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8); if (err==ZIP_OK) /* total number of entries in the central dir */ err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8); if (err==ZIP_OK) /* size of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)size_centraldir,8); if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */ { ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset; err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (ZPOS64_T)pos,8); } return err; } int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) { int err = ZIP_OK; /*signature*/ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4); if (err==ZIP_OK) /* number of this disk */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2); if (err==ZIP_OK) /* number of the disk with the start of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2); if (err==ZIP_OK) /* total number of entries in the central dir on this disk */ { { if(zi->number_entry >= 0xFFFF) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record else err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2); } } if (err==ZIP_OK) /* total number of entries in the central dir */ { if(zi->number_entry >= 0xFFFF) err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record else err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2); } if (err==ZIP_OK) /* size of the central directory */ err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4); if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */ { ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset; if(pos >= 0xffffffff) { err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)0xffffffff,4); } else err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)(centraldir_pos_inzip - zi->add_position_when_writing_offset),4); } return err; } int Write_GlobalComment(zip64_internal* zi, const char* global_comment) { int err = ZIP_OK; uInt size_global_comment = 0; if(global_comment != NULL) size_global_comment = (uInt)strlen(global_comment); err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2); if (err == ZIP_OK && size_global_comment > 0) { if (ZWRITE64(zi->z_filefunc,zi->filestream, global_comment, size_global_comment) != size_global_comment) err = ZIP_ERRNO; } return err; } extern int ZEXPORT zipClose (zipFile file, const char* global_comment) { zip64_internal* zi; int err = 0; uLong size_centraldir = 0; ZPOS64_T centraldir_pos_inzip; ZPOS64_T pos; if (file == NULL) return ZIP_PARAMERROR; zi = (zip64_internal*)file; if (zi->in_opened_file_inzip == 1) { err = zipCloseFileInZip (file); } #ifndef NO_ADDFILEINEXISTINGZIP if (global_comment==NULL) global_comment = zi->globalcomment; #endif centraldir_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream); if (err==ZIP_OK) { linkedlist_datablock_internal* ldi = zi->central_dir.first_block; while (ldi!=NULL) { if ((err==ZIP_OK) && (ldi->filled_in_this_block>0)) { if (ZWRITE64(zi->z_filefunc,zi->filestream, ldi->data, ldi->filled_in_this_block) != ldi->filled_in_this_block) err = ZIP_ERRNO; } size_centraldir += ldi->filled_in_this_block; ldi = ldi->next_datablock; } } free_linkedlist(&(zi->central_dir)); pos = centraldir_pos_inzip - zi->add_position_when_writing_offset; if(pos >= 0xffffffff || zi->number_entry > 0xFFFF) { ZPOS64_T Zip64EOCDpos = ZTELL64(zi->z_filefunc,zi->filestream); Write_Zip64EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip); Write_Zip64EndOfCentralDirectoryLocator(zi, Zip64EOCDpos); } if (err==ZIP_OK) err = Write_EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip); if(err == ZIP_OK) err = Write_GlobalComment(zi, global_comment); if (ZCLOSE64(zi->z_filefunc,zi->filestream) != 0) if (err == ZIP_OK) err = ZIP_ERRNO; #ifndef NO_ADDFILEINEXISTINGZIP TRYFREE(zi->globalcomment); #endif TRYFREE(zi); return err; } extern int ZEXPORT zipRemoveExtraInfoBlock (char* pData, int* dataLen, short sHeader) { char* p = pData; int size = 0; char* pNewHeader; char* pTmp; short header; short dataSize; int retVal = ZIP_OK; if(pData == NULL || *dataLen < 4) return ZIP_PARAMERROR; pNewHeader = (char*)ALLOC(*dataLen); pTmp = pNewHeader; while(p < (pData + *dataLen)) { header = *(short*)p; dataSize = *(((short*)p)+1); if( header == sHeader ) // Header found. { p += dataSize + 4; // skip it. do not copy to temp buffer } else { // Extra Info block should not be removed, So copy it to the temp buffer. memcpy(pTmp, p, dataSize + 4); p += dataSize + 4; size += dataSize + 4; } } if(size < *dataLen) { // clean old extra info block. memset(pData,0, *dataLen); // copy the new extra info block over the old if(size > 0) memcpy(pData, pNewHeader, size); // set the new extra info size *dataLen = size; retVal = ZIP_OK; } else retVal = ZIP_ERRNO; TRYFREE(pNewHeader); return retVal; } zlib-1.2.11.dfsg/contrib/minizip/unzip.c0000644000175000017500000021261713005413155017770 0ustar brooniebroonie/* unzip.c -- IO for uncompress .zip files using zlib Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications of Unzip for Zip64 Copyright (C) 2007-2008 Even Rouault Modifications for Zip64 support on both zip and unzip Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt ------------------------------------------------------------------------------------ Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of compatibility with older software. The following is from the original crypt.c. Code woven in by Terry Thorsen 1/2003. Copyright (c) 1990-2000 Info-ZIP. All rights reserved. See the accompanying file LICENSE, version 2000-Apr-09 or later (the contents of which are also included in zip.h) for terms of use. If, for some reason, all these files are missing, the Info-ZIP license also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h] The encryption/decryption parts of this source code (as opposed to the non-echoing password parts) were originally written in Europe. The whole source package can be freely distributed, including from the USA. (Prior to January 2000, re-export from the US was a violation of US law.) This encryption code is a direct transcription of the algorithm from Roger Schlafly, described by Phil Katz in the file appnote.txt. This file (appnote.txt) is distributed with the PKZIP program (even in the version without encryption capabilities). ------------------------------------------------------------------------------------ Changes in unzip.c 2007-2008 - Even Rouault - Addition of cpl_unzGetCurrentFileZStreamPos 2007-2008 - Even Rouault - Decoration of symbol names unz* -> cpl_unz* 2007-2008 - Even Rouault - Remove old C style function prototypes 2007-2008 - Even Rouault - Add unzip support for ZIP64 Copyright (C) 2007-2008 Even Rouault Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again). Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G should only read the compressed/uncompressed size from the Zip64 format if the size from normal header was 0xFFFFFFFF Oct-2009 - Mathias Svensson - Applied some bug fixes from paches recived from Gilles Vollant Oct-2009 - Mathias Svensson - Applied support to unzip files with compression mathod BZIP2 (bzip2 lib is required) Patch created by Daniel Borca Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer Copyright (C) 1998 - 2010 Gilles Vollant, Even Rouault, Mathias Svensson */ #include #include #include #ifndef NOUNCRYPT #define NOUNCRYPT #endif #include "zlib.h" #include "unzip.h" #ifdef STDC # include # include # include #endif #ifdef NO_ERRNO_H extern int errno; #else # include #endif #ifndef local # define local static #endif /* compile with -Dlocal if your debugger can't find static symbols */ #ifndef CASESENSITIVITYDEFAULT_NO # if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) # define CASESENSITIVITYDEFAULT_NO # endif #endif #ifndef UNZ_BUFSIZE #define UNZ_BUFSIZE (16384) #endif #ifndef UNZ_MAXFILENAMEINZIP #define UNZ_MAXFILENAMEINZIP (256) #endif #ifndef ALLOC # define ALLOC(size) (malloc(size)) #endif #ifndef TRYFREE # define TRYFREE(p) {if (p) free(p);} #endif #define SIZECENTRALDIRITEM (0x2e) #define SIZEZIPLOCALHEADER (0x1e) const char unz_copyright[] = " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; /* unz_file_info_interntal contain internal info about a file in zipfile*/ typedef struct unz_file_info64_internal_s { ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */ } unz_file_info64_internal; /* file_in_zip_read_info_s contain internal information about a file in zipfile, when reading and decompress it */ typedef struct { char *read_buffer; /* internal buffer for compressed data */ z_stream stream; /* zLib stream structure for inflate */ #ifdef HAVE_BZIP2 bz_stream bstream; /* bzLib stream structure for bziped */ #endif ZPOS64_T pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ uLong stream_initialised; /* flag set if stream structure is initialised*/ ZPOS64_T offset_local_extrafield;/* offset of the local extra field */ uInt size_local_extrafield;/* size of the local extra field */ ZPOS64_T pos_local_extrafield; /* position in the local extra field in read*/ ZPOS64_T total_out_64; uLong crc32; /* crc32 of all data uncompressed */ uLong crc32_wait; /* crc32 we must obtain after decompress all */ ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */ ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/ zlib_filefunc64_32_def z_filefunc; voidpf filestream; /* io structore of the zipfile */ uLong compression_method; /* compression method (0==store) */ ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ int raw; } file_in_zip64_read_info_s; /* unz64_s contain internal information about the zipfile */ typedef struct { zlib_filefunc64_32_def z_filefunc; int is64bitOpenFunction; voidpf filestream; /* io structore of the zipfile */ unz_global_info64 gi; /* public global information */ ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/ ZPOS64_T num_file; /* number of the current file in the zipfile*/ ZPOS64_T pos_in_central_dir; /* pos of the current file in the central dir*/ ZPOS64_T current_file_ok; /* flag about the usability of the current file*/ ZPOS64_T central_pos; /* position of the beginning of the central dir*/ ZPOS64_T size_central_dir; /* size of the central directory */ ZPOS64_T offset_central_dir; /* offset of start of central directory with respect to the starting disk number */ unz_file_info64 cur_file_info; /* public info about the current file in zip*/ unz_file_info64_internal cur_file_info_internal; /* private info about it*/ file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current file if we are decompressing it */ int encrypted; int isZip64; # ifndef NOUNCRYPT unsigned long keys[3]; /* keys defining the pseudo-random sequence */ const z_crc_t* pcrc_32_tab; # endif } unz64_s; #ifndef NOUNCRYPT #include "crypt.h" #endif /* =========================================================================== Read a byte from a gz_stream; update next_in and avail_in. Return EOF for end of file. IN assertion: the stream s has been successfully opened for reading. */ local int unz64local_getByte OF(( const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi)); local int unz64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi) { unsigned char c; int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1); if (err==1) { *pi = (int)c; return UNZ_OK; } else { if (ZERROR64(*pzlib_filefunc_def,filestream)) return UNZ_ERRNO; else return UNZ_EOF; } } /* =========================================================================== Reads a long in LSB order from the given gz_stream. Sets */ local int unz64local_getShort OF(( const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX)); local int unz64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX) { uLong x ; int i = 0; int err; err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x = (uLong)i; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((uLong)i)<<8; if (err==UNZ_OK) *pX = x; else *pX = 0; return err; } local int unz64local_getLong OF(( const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX)); local int unz64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX) { uLong x ; int i = 0; int err; err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x = (uLong)i; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((uLong)i)<<8; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((uLong)i)<<16; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x += ((uLong)i)<<24; if (err==UNZ_OK) *pX = x; else *pX = 0; return err; } local int unz64local_getLong64 OF(( const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX)); local int unz64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX) { ZPOS64_T x ; int i = 0; int err; err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x = (ZPOS64_T)i; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<8; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<16; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<24; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<32; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<40; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<48; if (err==UNZ_OK) err = unz64local_getByte(pzlib_filefunc_def,filestream,&i); x |= ((ZPOS64_T)i)<<56; if (err==UNZ_OK) *pX = x; else *pX = 0; return err; } /* My own strcmpi / strcasecmp */ local int strcmpcasenosensitive_internal (const char* fileName1, const char* fileName2) { for (;;) { char c1=*(fileName1++); char c2=*(fileName2++); if ((c1>='a') && (c1<='z')) c1 -= 0x20; if ((c2>='a') && (c2<='z')) c2 -= 0x20; if (c1=='\0') return ((c2=='\0') ? 0 : -1); if (c2=='\0') return 1; if (c1c2) return 1; } } #ifdef CASESENSITIVITYDEFAULT_NO #define CASESENSITIVITYDEFAULTVALUE 2 #else #define CASESENSITIVITYDEFAULTVALUE 1 #endif #ifndef STRCMPCASENOSENTIVEFUNCTION #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal #endif /* Compare two filename (fileName1,fileName2). If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi or strcasecmp) If iCaseSenisivity = 0, case sensitivity is defaut of your operating system (like 1 on Unix, 2 on Windows) */ extern int ZEXPORT unzStringFileNameCompare (const char* fileName1, const char* fileName2, int iCaseSensitivity) { if (iCaseSensitivity==0) iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE; if (iCaseSensitivity==1) return strcmp(fileName1,fileName2); return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2); } #ifndef BUFREADCOMMENT #define BUFREADCOMMENT (0x400) #endif /* Locate the Central directory of a zipfile (at the end, just before the global comment) */ local ZPOS64_T unz64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); local ZPOS64_T unz64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { unsigned char* buf; ZPOS64_T uSizeFile; ZPOS64_T uBackRead; ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ ZPOS64_T uPosFound=0; if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) return 0; uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); if (uMaxBack>uSizeFile) uMaxBack = uSizeFile; buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); if (buf==NULL) return 0; uBackRead = 4; while (uBackReaduMaxBack) uBackRead = uMaxBack; else uBackRead+=BUFREADCOMMENT; uReadPos = uSizeFile-uBackRead ; uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) break; if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) break; for (i=(int)uReadSize-3; (i--)>0;) if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06)) { uPosFound = uReadPos+i; break; } if (uPosFound!=0) break; } TRYFREE(buf); return uPosFound; } /* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */ local ZPOS64_T unz64local_SearchCentralDir64 OF(( const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)); local ZPOS64_T unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) { unsigned char* buf; ZPOS64_T uSizeFile; ZPOS64_T uBackRead; ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */ ZPOS64_T uPosFound=0; uLong uL; ZPOS64_T relativeOffset; if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0) return 0; uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream); if (uMaxBack>uSizeFile) uMaxBack = uSizeFile; buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4); if (buf==NULL) return 0; uBackRead = 4; while (uBackReaduMaxBack) uBackRead = uMaxBack; else uBackRead+=BUFREADCOMMENT; uReadPos = uSizeFile-uBackRead ; uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ? (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos); if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0) break; if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize) break; for (i=(int)uReadSize-3; (i--)>0;) if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07)) { uPosFound = uReadPos+i; break; } if (uPosFound!=0) break; } TRYFREE(buf); if (uPosFound == 0) return 0; /* Zip64 end of central directory locator */ if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0) return 0; /* the signature, already checked */ if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) return 0; /* number of the disk with the start of the zip64 end of central directory */ if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) return 0; if (uL != 0) return 0; /* relative offset of the zip64 end of central directory record */ if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK) return 0; /* total number of disks */ if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) return 0; if (uL != 1) return 0; /* Goto end of central directory record */ if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0) return 0; /* the signature */ if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK) return 0; if (uL != 0x06064b50) return 0; return relativeOffset; } /* Open a Zip file. path contain the full pathname (by example, on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer "zlib/zlib114.zip". If the zipfile cannot be opened (file doesn't exist or in not valid), the return value is NULL. Else, the return value is a unzFile Handle, usable with other function of this unzip package. */ local unzFile unzOpenInternal (const void *path, zlib_filefunc64_32_def* pzlib_filefunc64_32_def, int is64bitOpenFunction) { unz64_s us; unz64_s *s; ZPOS64_T central_pos; uLong uL; uLong number_disk; /* number of the current dist, used for spaning ZIP, unsupported, always 0*/ uLong number_disk_with_CD; /* number the the disk with central dir, used for spaning ZIP, unsupported, always 0*/ ZPOS64_T number_entry_CD; /* total number of entries in the central dir (same than number_entry on nospan) */ int err=UNZ_OK; if (unz_copyright[0]!=' ') return NULL; us.z_filefunc.zseek32_file = NULL; us.z_filefunc.ztell32_file = NULL; if (pzlib_filefunc64_32_def==NULL) fill_fopen64_filefunc(&us.z_filefunc.zfile_func64); else us.z_filefunc = *pzlib_filefunc64_32_def; us.is64bitOpenFunction = is64bitOpenFunction; us.filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING); if (us.filestream==NULL) return NULL; central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream); if (central_pos) { uLong uS; ZPOS64_T uL64; us.isZip64 = 1; if (ZSEEK64(us.z_filefunc, us.filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) err=UNZ_ERRNO; /* the signature, already checked */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; /* size of zip64 end of central directory record */ if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK) err=UNZ_ERRNO; /* version made by */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) err=UNZ_ERRNO; /* version needed to extract */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK) err=UNZ_ERRNO; /* number of this disk */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) err=UNZ_ERRNO; /* number of the disk with the start of the central directory */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) err=UNZ_ERRNO; /* total number of entries in the central directory on this disk */ if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK) err=UNZ_ERRNO; /* total number of entries in the central directory */ if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK) err=UNZ_ERRNO; if ((number_entry_CD!=us.gi.number_entry) || (number_disk_with_CD!=0) || (number_disk!=0)) err=UNZ_BADZIPFILE; /* size of the central directory */ if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK) err=UNZ_ERRNO; /* offset of start of central directory with respect to the starting disk number */ if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK) err=UNZ_ERRNO; us.gi.size_comment = 0; } else { central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream); if (central_pos==0) err=UNZ_ERRNO; us.isZip64 = 0; if (ZSEEK64(us.z_filefunc, us.filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0) err=UNZ_ERRNO; /* the signature, already checked */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; /* number of this disk */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK) err=UNZ_ERRNO; /* number of the disk with the start of the central directory */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK) err=UNZ_ERRNO; /* total number of entries in the central dir on this disk */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; us.gi.number_entry = uL; /* total number of entries in the central dir */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; number_entry_CD = uL; if ((number_entry_CD!=us.gi.number_entry) || (number_disk_with_CD!=0) || (number_disk!=0)) err=UNZ_BADZIPFILE; /* size of the central directory */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; us.size_central_dir = uL; /* offset of start of central directory with respect to the starting disk number */ if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK) err=UNZ_ERRNO; us.offset_central_dir = uL; /* zipfile comment length */ if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK) err=UNZ_ERRNO; } if ((central_pospfile_in_zip_read!=NULL) unzCloseCurrentFile(file); ZCLOSE64(s->z_filefunc, s->filestream); TRYFREE(s); return UNZ_OK; } /* Write info about the ZipFile in the *pglobal_info structure. No preparation of the structure is needed return UNZ_OK if there is no problem. */ extern int ZEXPORT unzGetGlobalInfo64 (unzFile file, unz_global_info64* pglobal_info) { unz64_s* s; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; *pglobal_info=s->gi; return UNZ_OK; } extern int ZEXPORT unzGetGlobalInfo (unzFile file, unz_global_info* pglobal_info32) { unz64_s* s; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; /* to do : check if number_entry is not truncated */ pglobal_info32->number_entry = (uLong)s->gi.number_entry; pglobal_info32->size_comment = s->gi.size_comment; return UNZ_OK; } /* Translate date/time from Dos format to tm_unz (readable more easilty) */ local void unz64local_DosDateToTmuDate (ZPOS64_T ulDosDate, tm_unz* ptm) { ZPOS64_T uDate; uDate = (ZPOS64_T)(ulDosDate>>16); ptm->tm_mday = (uInt)(uDate&0x1f) ; ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ; ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ; ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800); ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ; ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ; } /* Get Info about the current file in the zipfile, with internal only info */ local int unz64local_GetCurrentFileInfoInternal OF((unzFile file, unz_file_info64 *pfile_info, unz_file_info64_internal *pfile_info_internal, char *szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char *szComment, uLong commentBufferSize)); local int unz64local_GetCurrentFileInfoInternal (unzFile file, unz_file_info64 *pfile_info, unz_file_info64_internal *pfile_info_internal, char *szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char *szComment, uLong commentBufferSize) { unz64_s* s; unz_file_info64 file_info; unz_file_info64_internal file_info_internal; int err=UNZ_OK; uLong uMagic; long lSeek=0; uLong uL; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; if (ZSEEK64(s->z_filefunc, s->filestream, s->pos_in_central_dir+s->byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET)!=0) err=UNZ_ERRNO; /* we check the magic */ if (err==UNZ_OK) { if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) err=UNZ_ERRNO; else if (uMagic!=0x02014b50) err=UNZ_BADZIPFILE; } if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK) err=UNZ_ERRNO; unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date); if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) err=UNZ_ERRNO; file_info.compressed_size = uL; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) err=UNZ_ERRNO; file_info.uncompressed_size = uL; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK) err=UNZ_ERRNO; // relative offset of local header if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) err=UNZ_ERRNO; file_info_internal.offset_curfile = uL; lSeek+=file_info.size_filename; if ((err==UNZ_OK) && (szFileName!=NULL)) { uLong uSizeRead ; if (file_info.size_filename0) && (fileNameBufferSize>0)) if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead) err=UNZ_ERRNO; lSeek -= uSizeRead; } // Read extrafield if ((err==UNZ_OK) && (extraField!=NULL)) { ZPOS64_T uSizeRead ; if (file_info.size_file_extraz_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) lSeek=0; else err=UNZ_ERRNO; } if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0)) if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead) err=UNZ_ERRNO; lSeek += file_info.size_file_extra - (uLong)uSizeRead; } else lSeek += file_info.size_file_extra; if ((err==UNZ_OK) && (file_info.size_file_extra != 0)) { uLong acc = 0; // since lSeek now points to after the extra field we need to move back lSeek -= file_info.size_file_extra; if (lSeek!=0) { if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) lSeek=0; else err=UNZ_ERRNO; } while(acc < file_info.size_file_extra) { uLong headerId; uLong dataSize; if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK) err=UNZ_ERRNO; /* ZIP64 extra fields */ if (headerId == 0x0001) { uLong uL; if(file_info.uncompressed_size == MAXU32) { if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK) err=UNZ_ERRNO; } if(file_info.compressed_size == MAXU32) { if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK) err=UNZ_ERRNO; } if(file_info_internal.offset_curfile == MAXU32) { /* Relative Header offset */ if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK) err=UNZ_ERRNO; } if(file_info.disk_num_start == MAXU32) { /* Disk Start Number */ if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK) err=UNZ_ERRNO; } } else { if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0) err=UNZ_ERRNO; } acc += 2 + 2 + dataSize; } } if ((err==UNZ_OK) && (szComment!=NULL)) { uLong uSizeRead ; if (file_info.size_file_commentz_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0) lSeek=0; else err=UNZ_ERRNO; } if ((file_info.size_file_comment>0) && (commentBufferSize>0)) if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead) err=UNZ_ERRNO; lSeek+=file_info.size_file_comment - uSizeRead; } else lSeek+=file_info.size_file_comment; if ((err==UNZ_OK) && (pfile_info!=NULL)) *pfile_info=file_info; if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) *pfile_info_internal=file_info_internal; return err; } /* Write info about the ZipFile in the *pglobal_info structure. No preparation of the structure is needed return UNZ_OK if there is no problem. */ extern int ZEXPORT unzGetCurrentFileInfo64 (unzFile file, unz_file_info64 * pfile_info, char * szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char* szComment, uLong commentBufferSize) { return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL, szFileName,fileNameBufferSize, extraField,extraFieldBufferSize, szComment,commentBufferSize); } extern int ZEXPORT unzGetCurrentFileInfo (unzFile file, unz_file_info * pfile_info, char * szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char* szComment, uLong commentBufferSize) { int err; unz_file_info64 file_info64; err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL, szFileName,fileNameBufferSize, extraField,extraFieldBufferSize, szComment,commentBufferSize); if ((err==UNZ_OK) && (pfile_info != NULL)) { pfile_info->version = file_info64.version; pfile_info->version_needed = file_info64.version_needed; pfile_info->flag = file_info64.flag; pfile_info->compression_method = file_info64.compression_method; pfile_info->dosDate = file_info64.dosDate; pfile_info->crc = file_info64.crc; pfile_info->size_filename = file_info64.size_filename; pfile_info->size_file_extra = file_info64.size_file_extra; pfile_info->size_file_comment = file_info64.size_file_comment; pfile_info->disk_num_start = file_info64.disk_num_start; pfile_info->internal_fa = file_info64.internal_fa; pfile_info->external_fa = file_info64.external_fa; pfile_info->tmu_date = file_info64.tmu_date, pfile_info->compressed_size = (uLong)file_info64.compressed_size; pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size; } return err; } /* Set the current file of the zipfile to the first file. return UNZ_OK if there is no problem */ extern int ZEXPORT unzGoToFirstFile (unzFile file) { int err=UNZ_OK; unz64_s* s; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; s->pos_in_central_dir=s->offset_central_dir; s->num_file=0; err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, &s->cur_file_info_internal, NULL,0,NULL,0,NULL,0); s->current_file_ok = (err == UNZ_OK); return err; } /* Set the current file of the zipfile to the next file. return UNZ_OK if there is no problem return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. */ extern int ZEXPORT unzGoToNextFile (unzFile file) { unz64_s* s; int err; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; if (!s->current_file_ok) return UNZ_END_OF_LIST_OF_FILE; if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */ if (s->num_file+1==s->gi.number_entry) return UNZ_END_OF_LIST_OF_FILE; s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ; s->num_file++; err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, &s->cur_file_info_internal, NULL,0,NULL,0,NULL,0); s->current_file_ok = (err == UNZ_OK); return err; } /* Try locate the file szFileName in the zipfile. For the iCaseSensitivity signification, see unzStringFileNameCompare return value : UNZ_OK if the file is found. It becomes the current file. UNZ_END_OF_LIST_OF_FILE if the file is not found */ extern int ZEXPORT unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity) { unz64_s* s; int err; /* We remember the 'current' position in the file so that we can jump * back there if we fail. */ unz_file_info64 cur_file_infoSaved; unz_file_info64_internal cur_file_info_internalSaved; ZPOS64_T num_fileSaved; ZPOS64_T pos_in_central_dirSaved; if (file==NULL) return UNZ_PARAMERROR; if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP) return UNZ_PARAMERROR; s=(unz64_s*)file; if (!s->current_file_ok) return UNZ_END_OF_LIST_OF_FILE; /* Save the current state */ num_fileSaved = s->num_file; pos_in_central_dirSaved = s->pos_in_central_dir; cur_file_infoSaved = s->cur_file_info; cur_file_info_internalSaved = s->cur_file_info_internal; err = unzGoToFirstFile(file); while (err == UNZ_OK) { char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1]; err = unzGetCurrentFileInfo64(file,NULL, szCurrentFileName,sizeof(szCurrentFileName)-1, NULL,0,NULL,0); if (err == UNZ_OK) { if (unzStringFileNameCompare(szCurrentFileName, szFileName,iCaseSensitivity)==0) return UNZ_OK; err = unzGoToNextFile(file); } } /* We failed, so restore the state of the 'current file' to where we * were. */ s->num_file = num_fileSaved ; s->pos_in_central_dir = pos_in_central_dirSaved ; s->cur_file_info = cur_file_infoSaved; s->cur_file_info_internal = cur_file_info_internalSaved; return err; } /* /////////////////////////////////////////// // Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) // I need random access // // Further optimization could be realized by adding an ability // to cache the directory in memory. The goal being a single // comprehensive file read to put the file I need in a memory. */ /* typedef struct unz_file_pos_s { ZPOS64_T pos_in_zip_directory; // offset in file ZPOS64_T num_of_file; // # of file } unz_file_pos; */ extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos) { unz64_s* s; if (file==NULL || file_pos==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; if (!s->current_file_ok) return UNZ_END_OF_LIST_OF_FILE; file_pos->pos_in_zip_directory = s->pos_in_central_dir; file_pos->num_of_file = s->num_file; return UNZ_OK; } extern int ZEXPORT unzGetFilePos( unzFile file, unz_file_pos* file_pos) { unz64_file_pos file_pos64; int err = unzGetFilePos64(file,&file_pos64); if (err==UNZ_OK) { file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory; file_pos->num_of_file = (uLong)file_pos64.num_of_file; } return err; } extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos) { unz64_s* s; int err; if (file==NULL || file_pos==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; /* jump to the right spot */ s->pos_in_central_dir = file_pos->pos_in_zip_directory; s->num_file = file_pos->num_of_file; /* set the current file */ err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, &s->cur_file_info_internal, NULL,0,NULL,0,NULL,0); /* return results */ s->current_file_ok = (err == UNZ_OK); return err; } extern int ZEXPORT unzGoToFilePos( unzFile file, unz_file_pos* file_pos) { unz64_file_pos file_pos64; if (file_pos == NULL) return UNZ_PARAMERROR; file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory; file_pos64.num_of_file = file_pos->num_of_file; return unzGoToFilePos64(file,&file_pos64); } /* // Unzip Helper Functions - should be here? /////////////////////////////////////////// */ /* Read the local header of the current zipfile Check the coherency of the local header and info in the end of central directory about this file store in *piSizeVar the size of extra info in local header (filename and size of extra field data) */ local int unz64local_CheckCurrentFileCoherencyHeader (unz64_s* s, uInt* piSizeVar, ZPOS64_T * poffset_local_extrafield, uInt * psize_local_extrafield) { uLong uMagic,uData,uFlags; uLong size_filename; uLong size_extra_field; int err=UNZ_OK; *piSizeVar = 0; *poffset_local_extrafield = 0; *psize_local_extrafield = 0; if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile + s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0) return UNZ_ERRNO; if (err==UNZ_OK) { if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK) err=UNZ_ERRNO; else if (uMagic!=0x04034b50) err=UNZ_BADZIPFILE; } if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) err=UNZ_ERRNO; /* else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) err=UNZ_BADZIPFILE; */ if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK) err=UNZ_ERRNO; if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) err=UNZ_ERRNO; else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method)) err=UNZ_BADZIPFILE; if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) && /* #ifdef HAVE_BZIP2 */ (s->cur_file_info.compression_method!=Z_BZIP2ED) && /* #endif */ (s->cur_file_info.compression_method!=Z_DEFLATED)) err=UNZ_BADZIPFILE; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */ err=UNZ_ERRNO; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */ err=UNZ_ERRNO; else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0)) err=UNZ_BADZIPFILE; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */ err=UNZ_ERRNO; else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0)) err=UNZ_BADZIPFILE; if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */ err=UNZ_ERRNO; else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0)) err=UNZ_BADZIPFILE; if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK) err=UNZ_ERRNO; else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename)) err=UNZ_BADZIPFILE; *piSizeVar += (uInt)size_filename; if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK) err=UNZ_ERRNO; *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_filename; *psize_local_extrafield = (uInt)size_extra_field; *piSizeVar += (uInt)size_extra_field; return err; } /* Open for reading data the current file in the zipfile. If there is no error and the file is opened, the return value is UNZ_OK. */ extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method, int* level, int raw, const char* password) { int err=UNZ_OK; uInt iSizeVar; unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; ZPOS64_T offset_local_extrafield; /* offset of the local extra field */ uInt size_local_extrafield; /* size of the local extra field */ # ifndef NOUNCRYPT char source[12]; # else if (password != NULL) return UNZ_PARAMERROR; # endif if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; if (!s->current_file_ok) return UNZ_PARAMERROR; if (s->pfile_in_zip_read != NULL) unzCloseCurrentFile(file); if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK) return UNZ_BADZIPFILE; pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s)); if (pfile_in_zip_read_info==NULL) return UNZ_INTERNALERROR; pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE); pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; pfile_in_zip_read_info->pos_local_extrafield=0; pfile_in_zip_read_info->raw=raw; if (pfile_in_zip_read_info->read_buffer==NULL) { TRYFREE(pfile_in_zip_read_info); return UNZ_INTERNALERROR; } pfile_in_zip_read_info->stream_initialised=0; if (method!=NULL) *method = (int)s->cur_file_info.compression_method; if (level!=NULL) { *level = 6; switch (s->cur_file_info.flag & 0x06) { case 6 : *level = 1; break; case 4 : *level = 2; break; case 2 : *level = 9; break; } } if ((s->cur_file_info.compression_method!=0) && /* #ifdef HAVE_BZIP2 */ (s->cur_file_info.compression_method!=Z_BZIP2ED) && /* #endif */ (s->cur_file_info.compression_method!=Z_DEFLATED)) err=UNZ_BADZIPFILE; pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc; pfile_in_zip_read_info->crc32=0; pfile_in_zip_read_info->total_out_64=0; pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method; pfile_in_zip_read_info->filestream=s->filestream; pfile_in_zip_read_info->z_filefunc=s->z_filefunc; pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile; pfile_in_zip_read_info->stream.total_out = 0; if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw)) { #ifdef HAVE_BZIP2 pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0; pfile_in_zip_read_info->bstream.bzfree = (free_func)0; pfile_in_zip_read_info->bstream.opaque = (voidpf)0; pfile_in_zip_read_info->bstream.state = (voidpf)0; pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; pfile_in_zip_read_info->stream.zfree = (free_func)0; pfile_in_zip_read_info->stream.opaque = (voidpf)0; pfile_in_zip_read_info->stream.next_in = (voidpf)0; pfile_in_zip_read_info->stream.avail_in = 0; err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0); if (err == Z_OK) pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED; else { TRYFREE(pfile_in_zip_read_info); return err; } #else pfile_in_zip_read_info->raw=1; #endif } else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw)) { pfile_in_zip_read_info->stream.zalloc = (alloc_func)0; pfile_in_zip_read_info->stream.zfree = (free_func)0; pfile_in_zip_read_info->stream.opaque = (voidpf)0; pfile_in_zip_read_info->stream.next_in = 0; pfile_in_zip_read_info->stream.avail_in = 0; err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); if (err == Z_OK) pfile_in_zip_read_info->stream_initialised=Z_DEFLATED; else { TRYFREE(pfile_in_zip_read_info); return err; } /* windowBits is passed < 0 to tell that there is no zlib header. * Note that in this case inflate *requires* an extra "dummy" byte * after the compressed stream in order to complete decompression and * return Z_STREAM_END. * In unzip, i don't wait absolutely Z_STREAM_END because I known the * size of both compressed and uncompressed data */ } pfile_in_zip_read_info->rest_read_compressed = s->cur_file_info.compressed_size ; pfile_in_zip_read_info->rest_read_uncompressed = s->cur_file_info.uncompressed_size ; pfile_in_zip_read_info->pos_in_zipfile = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + iSizeVar; pfile_in_zip_read_info->stream.avail_in = (uInt)0; s->pfile_in_zip_read = pfile_in_zip_read_info; s->encrypted = 0; # ifndef NOUNCRYPT if (password != NULL) { int i; s->pcrc_32_tab = get_crc_table(); init_keys(password,s->keys,s->pcrc_32_tab); if (ZSEEK64(s->z_filefunc, s->filestream, s->pfile_in_zip_read->pos_in_zipfile + s->pfile_in_zip_read->byte_before_the_zipfile, SEEK_SET)!=0) return UNZ_INTERNALERROR; if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12) return UNZ_INTERNALERROR; for (i = 0; i<12; i++) zdecode(s->keys,s->pcrc_32_tab,source[i]); s->pfile_in_zip_read->pos_in_zipfile+=12; s->encrypted=1; } # endif return UNZ_OK; } extern int ZEXPORT unzOpenCurrentFile (unzFile file) { return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); } extern int ZEXPORT unzOpenCurrentFilePassword (unzFile file, const char* password) { return unzOpenCurrentFile3(file, NULL, NULL, 0, password); } extern int ZEXPORT unzOpenCurrentFile2 (unzFile file, int* method, int* level, int raw) { return unzOpenCurrentFile3(file, method, level, raw, NULL); } /** Addition for GDAL : START */ extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64( unzFile file) { unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; s=(unz64_s*)file; if (file==NULL) return 0; //UNZ_PARAMERROR; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return 0; //UNZ_PARAMERROR; return pfile_in_zip_read_info->pos_in_zipfile + pfile_in_zip_read_info->byte_before_the_zipfile; } /** Addition for GDAL : END */ /* Read bytes from the current file. buf contain buffer where data must be copied len the size of buf. return the number of byte copied if somes bytes are copied return 0 if the end of file was reached return <0 with error code if there is an error (UNZ_ERRNO for IO error, or zLib error for uncompress error) */ extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len) { int err=UNZ_OK; uInt iRead = 0; unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return UNZ_PARAMERROR; if (pfile_in_zip_read_info->read_buffer == NULL) return UNZ_END_OF_LIST_OF_FILE; if (len==0) return 0; pfile_in_zip_read_info->stream.next_out = (Bytef*)buf; pfile_in_zip_read_info->stream.avail_out = (uInt)len; if ((len>pfile_in_zip_read_info->rest_read_uncompressed) && (!(pfile_in_zip_read_info->raw))) pfile_in_zip_read_info->stream.avail_out = (uInt)pfile_in_zip_read_info->rest_read_uncompressed; if ((len>pfile_in_zip_read_info->rest_read_compressed+ pfile_in_zip_read_info->stream.avail_in) && (pfile_in_zip_read_info->raw)) pfile_in_zip_read_info->stream.avail_out = (uInt)pfile_in_zip_read_info->rest_read_compressed+ pfile_in_zip_read_info->stream.avail_in; while (pfile_in_zip_read_info->stream.avail_out>0) { if ((pfile_in_zip_read_info->stream.avail_in==0) && (pfile_in_zip_read_info->rest_read_compressed>0)) { uInt uReadThis = UNZ_BUFSIZE; if (pfile_in_zip_read_info->rest_read_compressedrest_read_compressed; if (uReadThis == 0) return UNZ_EOF; if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, pfile_in_zip_read_info->filestream, pfile_in_zip_read_info->pos_in_zipfile + pfile_in_zip_read_info->byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET)!=0) return UNZ_ERRNO; if (ZREAD64(pfile_in_zip_read_info->z_filefunc, pfile_in_zip_read_info->filestream, pfile_in_zip_read_info->read_buffer, uReadThis)!=uReadThis) return UNZ_ERRNO; # ifndef NOUNCRYPT if(s->encrypted) { uInt i; for(i=0;iread_buffer[i] = zdecode(s->keys,s->pcrc_32_tab, pfile_in_zip_read_info->read_buffer[i]); } # endif pfile_in_zip_read_info->pos_in_zipfile += uReadThis; pfile_in_zip_read_info->rest_read_compressed-=uReadThis; pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->read_buffer; pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis; } if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw)) { uInt uDoCopy,i ; if ((pfile_in_zip_read_info->stream.avail_in == 0) && (pfile_in_zip_read_info->rest_read_compressed == 0)) return (iRead==0) ? UNZ_EOF : iRead; if (pfile_in_zip_read_info->stream.avail_out < pfile_in_zip_read_info->stream.avail_in) uDoCopy = pfile_in_zip_read_info->stream.avail_out ; else uDoCopy = pfile_in_zip_read_info->stream.avail_in ; for (i=0;istream.next_out+i) = *(pfile_in_zip_read_info->stream.next_in+i); pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy; pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, pfile_in_zip_read_info->stream.next_out, uDoCopy); pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy; pfile_in_zip_read_info->stream.avail_in -= uDoCopy; pfile_in_zip_read_info->stream.avail_out -= uDoCopy; pfile_in_zip_read_info->stream.next_out += uDoCopy; pfile_in_zip_read_info->stream.next_in += uDoCopy; pfile_in_zip_read_info->stream.total_out += uDoCopy; iRead += uDoCopy; } else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED) { #ifdef HAVE_BZIP2 uLong uTotalOutBefore,uTotalOutAfter; const Bytef *bufBefore; uLong uOutThis; pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in; pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in; pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in; pfile_in_zip_read_info->bstream.total_in_hi32 = 0; pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out; pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out; pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out; pfile_in_zip_read_info->bstream.total_out_hi32 = 0; uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32; bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out; err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream); uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32; uOutThis = uTotalOutAfter-uTotalOutBefore; pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in; pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in; pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32; pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out; pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out; pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32; if (err==BZ_STREAM_END) return (iRead==0) ? UNZ_EOF : iRead; if (err!=BZ_OK) break; #endif } // end Z_BZIP2ED else { ZPOS64_T uTotalOutBefore,uTotalOutAfter; const Bytef *bufBefore; ZPOS64_T uOutThis; int flush=Z_SYNC_FLUSH; uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; bufBefore = pfile_in_zip_read_info->stream.next_out; /* if ((pfile_in_zip_read_info->rest_read_uncompressed == pfile_in_zip_read_info->stream.avail_out) && (pfile_in_zip_read_info->rest_read_compressed == 0)) flush = Z_FINISH; */ err=inflate(&pfile_in_zip_read_info->stream,flush); if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL)) err = Z_DATA_ERROR; uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; uOutThis = uTotalOutAfter-uTotalOutBefore; pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis; pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis)); pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; iRead += (uInt)(uTotalOutAfter - uTotalOutBefore); if (err==Z_STREAM_END) return (iRead==0) ? UNZ_EOF : iRead; if (err!=Z_OK) break; } } if (err==Z_OK) return iRead; return err; } /* Give the current position in uncompressed data */ extern z_off_t ZEXPORT unztell (unzFile file) { unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return UNZ_PARAMERROR; return (z_off_t)pfile_in_zip_read_info->stream.total_out; } extern ZPOS64_T ZEXPORT unztell64 (unzFile file) { unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; if (file==NULL) return (ZPOS64_T)-1; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return (ZPOS64_T)-1; return pfile_in_zip_read_info->total_out_64; } /* return 1 if the end of file was reached, 0 elsewhere */ extern int ZEXPORT unzeof (unzFile file) { unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return UNZ_PARAMERROR; if (pfile_in_zip_read_info->rest_read_uncompressed == 0) return 1; else return 0; } /* Read extra field from the current file (opened by unzOpenCurrentFile) This is the local-header version of the extra field (sometimes, there is more info in the local-header version than in the central-header) if buf==NULL, it return the size of the local extra field that can be read if buf!=NULL, len is the size of the buffer, the extra header is copied in buf. the return value is the number of bytes copied in buf, or (if <0) the error code */ extern int ZEXPORT unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len) { unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; uInt read_now; ZPOS64_T size_to_read; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return UNZ_PARAMERROR; size_to_read = (pfile_in_zip_read_info->size_local_extrafield - pfile_in_zip_read_info->pos_local_extrafield); if (buf==NULL) return (int)size_to_read; if (len>size_to_read) read_now = (uInt)size_to_read; else read_now = (uInt)len ; if (read_now==0) return 0; if (ZSEEK64(pfile_in_zip_read_info->z_filefunc, pfile_in_zip_read_info->filestream, pfile_in_zip_read_info->offset_local_extrafield + pfile_in_zip_read_info->pos_local_extrafield, ZLIB_FILEFUNC_SEEK_SET)!=0) return UNZ_ERRNO; if (ZREAD64(pfile_in_zip_read_info->z_filefunc, pfile_in_zip_read_info->filestream, buf,read_now)!=read_now) return UNZ_ERRNO; return (int)read_now; } /* Close the file in zip opened with unzOpenCurrentFile Return UNZ_CRCERROR if all the file was read but the CRC is not good */ extern int ZEXPORT unzCloseCurrentFile (unzFile file) { int err=UNZ_OK; unz64_s* s; file_in_zip64_read_info_s* pfile_in_zip_read_info; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; pfile_in_zip_read_info=s->pfile_in_zip_read; if (pfile_in_zip_read_info==NULL) return UNZ_PARAMERROR; if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) && (!pfile_in_zip_read_info->raw)) { if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) err=UNZ_CRCERROR; } TRYFREE(pfile_in_zip_read_info->read_buffer); pfile_in_zip_read_info->read_buffer = NULL; if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED) inflateEnd(&pfile_in_zip_read_info->stream); #ifdef HAVE_BZIP2 else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED) BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream); #endif pfile_in_zip_read_info->stream_initialised = 0; TRYFREE(pfile_in_zip_read_info); s->pfile_in_zip_read=NULL; return err; } /* Get the global comment string of the ZipFile, in the szComment buffer. uSizeBuf is the size of the szComment buffer. return the number of byte copied or an error code <0 */ extern int ZEXPORT unzGetGlobalComment (unzFile file, char * szComment, uLong uSizeBuf) { unz64_s* s; uLong uReadThis ; if (file==NULL) return (int)UNZ_PARAMERROR; s=(unz64_s*)file; uReadThis = uSizeBuf; if (uReadThis>s->gi.size_comment) uReadThis = s->gi.size_comment; if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0) return UNZ_ERRNO; if (uReadThis>0) { *szComment='\0'; if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis) return UNZ_ERRNO; } if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) *(szComment+s->gi.size_comment)='\0'; return (int)uReadThis; } /* Additions by RX '2004 */ extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) { unz64_s* s; if (file==NULL) return 0; //UNZ_PARAMERROR; s=(unz64_s*)file; if (!s->current_file_ok) return 0; if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) if (s->num_file==s->gi.number_entry) return 0; return s->pos_in_central_dir; } extern uLong ZEXPORT unzGetOffset (unzFile file) { ZPOS64_T offset64; if (file==NULL) return 0; //UNZ_PARAMERROR; offset64 = unzGetOffset64(file); return (uLong)offset64; } extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) { unz64_s* s; int err; if (file==NULL) return UNZ_PARAMERROR; s=(unz64_s*)file; s->pos_in_central_dir = pos; s->num_file = s->gi.number_entry; /* hack */ err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info, &s->cur_file_info_internal, NULL,0,NULL,0,NULL,0); s->current_file_ok = (err == UNZ_OK); return err; } extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) { return unzSetOffset64(file,pos); } zlib-1.2.11.dfsg/contrib/minizip/minizip.pc.in0000644000175000017500000000040711660025707021066 0ustar brooniebroonieprefix=@prefix@ exec_prefix=@exec_prefix@ libdir=@libdir@ includedir=@includedir@/minizip Name: minizip Description: Minizip zip file manipulation library Requires: Version: @PACKAGE_VERSION@ Libs: -L${libdir} -lminizip Libs.private: -lz Cflags: -I${includedir} zlib-1.2.11.dfsg/contrib/minizip/crypt.h0000644000175000017500000001117712112341016017761 0ustar brooniebroonie/* crypt.h -- base code for crypt/uncrypt ZIPfile Version 1.01e, February 12th, 2005 Copyright (C) 1998-2005 Gilles Vollant This code is a modified version of crypting code in Infozip distribution The encryption/decryption parts of this source code (as opposed to the non-echoing password parts) were originally written in Europe. The whole source package can be freely distributed, including from the USA. (Prior to January 2000, re-export from the US was a violation of US law.) This encryption code is a direct transcription of the algorithm from Roger Schlafly, described by Phil Katz in the file appnote.txt. This file (appnote.txt) is distributed with the PKZIP program (even in the version without encryption capabilities). If you don't need crypting in your application, just define symbols NOCRYPT and NOUNCRYPT. This code support the "Traditional PKWARE Encryption". The new AES encryption added on Zip format by Winzip (see the page http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong Encryption is not supported. */ #define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8)) /*********************************************************************** * Return the next byte in the pseudo-random sequence */ static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) { unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an * unpredictable manner on 16-bit systems; not a problem * with any known compiler so far, though */ temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2; return (int)(((temp * (temp ^ 1)) >> 8) & 0xff); } /*********************************************************************** * Update the encryption keys with the next byte of plain text */ static int update_keys(unsigned long* pkeys,const z_crc_t* pcrc_32_tab,int c) { (*(pkeys+0)) = CRC32((*(pkeys+0)), c); (*(pkeys+1)) += (*(pkeys+0)) & 0xff; (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1; { register int keyshift = (int)((*(pkeys+1)) >> 24); (*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift); } return c; } /*********************************************************************** * Initialize the encryption keys and the random header according to * the given password. */ static void init_keys(const char* passwd,unsigned long* pkeys,const z_crc_t* pcrc_32_tab) { *(pkeys+0) = 305419896L; *(pkeys+1) = 591751049L; *(pkeys+2) = 878082192L; while (*passwd != '\0') { update_keys(pkeys,pcrc_32_tab,(int)*passwd); passwd++; } } #define zdecode(pkeys,pcrc_32_tab,c) \ (update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab))) #define zencode(pkeys,pcrc_32_tab,c,t) \ (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c)) #ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED #define RAND_HEAD_LEN 12 /* "last resort" source for second part of crypt seed pattern */ # ifndef ZCR_SEED2 # define ZCR_SEED2 3141592654UL /* use PI as default pattern */ # endif static int crypthead(const char* passwd, /* password string */ unsigned char* buf, /* where to write header */ int bufSize, unsigned long* pkeys, const z_crc_t* pcrc_32_tab, unsigned long crcForCrypting) { int n; /* index in random header */ int t; /* temporary */ int c; /* random byte */ unsigned char header[RAND_HEAD_LEN-2]; /* random header */ static unsigned calls = 0; /* ensure different random header each time */ if (bufSize> 7) & 0xff; header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t); } /* Encrypt random header (last two bytes is high word of crc) */ init_keys(passwd, pkeys, pcrc_32_tab); for (n = 0; n < RAND_HEAD_LEN-2; n++) { buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t); } buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t); buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t); return n; } #endif zlib-1.2.11.dfsg/contrib/minizip/ioapi.c0000644000175000017500000002004111706614365017724 0ustar brooniebroonie/* ioapi.h -- IO base function header for compress/uncompress .zip part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt */ #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS))) #define _CRT_SECURE_NO_WARNINGS #endif #if defined(__APPLE__) || defined(IOAPI_NO_64) // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions #define FOPEN_FUNC(filename, mode) fopen(filename, mode) #define FTELLO_FUNC(stream) ftello(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin) #else #define FOPEN_FUNC(filename, mode) fopen64(filename, mode) #define FTELLO_FUNC(stream) ftello64(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin) #endif #include "ioapi.h" voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) { if (pfilefunc->zfile_func64.zopen64_file != NULL) return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); else { return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); } } long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) { if (pfilefunc->zfile_func64.zseek64_file != NULL) return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); else { uLong offsetTruncated = (uLong)offset; if (offsetTruncated != offset) return -1; else return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); } } ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) { if (pfilefunc->zfile_func64.zseek64_file != NULL) return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); else { uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); if ((tell_uLong) == MAXU32) return (ZPOS64_T)-1; else return tell_uLong; } } void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) { p_filefunc64_32->zfile_func64.zopen64_file = NULL; p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; p_filefunc64_32->zfile_func64.ztell64_file = NULL; p_filefunc64_32->zfile_func64.zseek64_file = NULL; p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; } static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) { FILE* file = NULL; const char* mode_fopen = NULL; if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) mode_fopen = "rb"; else if (mode & ZLIB_FILEFUNC_MODE_EXISTING) mode_fopen = "r+b"; else if (mode & ZLIB_FILEFUNC_MODE_CREATE) mode_fopen = "wb"; if ((filename!=NULL) && (mode_fopen != NULL)) file = fopen(filename, mode_fopen); return file; } static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) { FILE* file = NULL; const char* mode_fopen = NULL; if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) mode_fopen = "rb"; else if (mode & ZLIB_FILEFUNC_MODE_EXISTING) mode_fopen = "r+b"; else if (mode & ZLIB_FILEFUNC_MODE_CREATE) mode_fopen = "wb"; if ((filename!=NULL) && (mode_fopen != NULL)) file = FOPEN_FUNC((const char*)filename, mode_fopen); return file; } static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) { uLong ret; ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); return ret; } static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) { uLong ret; ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); return ret; } static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) { long ret; ret = ftell((FILE *)stream); return ret; } static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) { ZPOS64_T ret; ret = FTELLO_FUNC((FILE *)stream); return ret; } static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) { int fseek_origin=0; long ret; switch (origin) { case ZLIB_FILEFUNC_SEEK_CUR : fseek_origin = SEEK_CUR; break; case ZLIB_FILEFUNC_SEEK_END : fseek_origin = SEEK_END; break; case ZLIB_FILEFUNC_SEEK_SET : fseek_origin = SEEK_SET; break; default: return -1; } ret = 0; if (fseek((FILE *)stream, offset, fseek_origin) != 0) ret = -1; return ret; } static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) { int fseek_origin=0; long ret; switch (origin) { case ZLIB_FILEFUNC_SEEK_CUR : fseek_origin = SEEK_CUR; break; case ZLIB_FILEFUNC_SEEK_END : fseek_origin = SEEK_END; break; case ZLIB_FILEFUNC_SEEK_SET : fseek_origin = SEEK_SET; break; default: return -1; } ret = 0; if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0) ret = -1; return ret; } static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) { int ret; ret = fclose((FILE *)stream); return ret; } static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) { int ret; ret = ferror((FILE *)stream); return ret; } void fill_fopen_filefunc (pzlib_filefunc_def) zlib_filefunc_def* pzlib_filefunc_def; { pzlib_filefunc_def->zopen_file = fopen_file_func; pzlib_filefunc_def->zread_file = fread_file_func; pzlib_filefunc_def->zwrite_file = fwrite_file_func; pzlib_filefunc_def->ztell_file = ftell_file_func; pzlib_filefunc_def->zseek_file = fseek_file_func; pzlib_filefunc_def->zclose_file = fclose_file_func; pzlib_filefunc_def->zerror_file = ferror_file_func; pzlib_filefunc_def->opaque = NULL; } void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) { pzlib_filefunc_def->zopen64_file = fopen64_file_func; pzlib_filefunc_def->zread_file = fread_file_func; pzlib_filefunc_def->zwrite_file = fwrite_file_func; pzlib_filefunc_def->ztell64_file = ftell64_file_func; pzlib_filefunc_def->zseek64_file = fseek64_file_func; pzlib_filefunc_def->zclose_file = fclose_file_func; pzlib_filefunc_def->zerror_file = ferror_file_func; pzlib_filefunc_def->opaque = NULL; } zlib-1.2.11.dfsg/contrib/minizip/iowin32.c0000644000175000017500000003361712177325263020131 0ustar brooniebroonie/* iowin32.c -- IO base function header for compress/uncompress .zip Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt */ #include #include "zlib.h" #include "ioapi.h" #include "iowin32.h" #ifndef INVALID_HANDLE_VALUE #define INVALID_HANDLE_VALUE (0xFFFFFFFF) #endif #ifndef INVALID_SET_FILE_POINTER #define INVALID_SET_FILE_POINTER ((DWORD)-1) #endif // see Include/shared/winapifamily.h in the Windows Kit #if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API))) #if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP) #define IOWIN32_USING_WINRT_API 1 #endif #endif voidpf ZCALLBACK win32_open_file_func OF((voidpf opaque, const char* filename, int mode)); uLong ZCALLBACK win32_read_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); uLong ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size)); ZPOS64_T ZCALLBACK win32_tell64_file_func OF((voidpf opaque, voidpf stream)); long ZCALLBACK win32_seek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); int ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream)); int ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream)); typedef struct { HANDLE hf; int error; } WIN32FILE_IOWIN; static void win32_translate_open_mode(int mode, DWORD* lpdwDesiredAccess, DWORD* lpdwCreationDisposition, DWORD* lpdwShareMode, DWORD* lpdwFlagsAndAttributes) { *lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0; if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) { *lpdwDesiredAccess = GENERIC_READ; *lpdwCreationDisposition = OPEN_EXISTING; *lpdwShareMode = FILE_SHARE_READ; } else if (mode & ZLIB_FILEFUNC_MODE_EXISTING) { *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ; *lpdwCreationDisposition = OPEN_EXISTING; } else if (mode & ZLIB_FILEFUNC_MODE_CREATE) { *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ; *lpdwCreationDisposition = CREATE_ALWAYS; } } static voidpf win32_build_iowin(HANDLE hFile) { voidpf ret=NULL; if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE)) { WIN32FILE_IOWIN w32fiow; w32fiow.hf = hFile; w32fiow.error = 0; ret = malloc(sizeof(WIN32FILE_IOWIN)); if (ret==NULL) CloseHandle(hFile); else *((WIN32FILE_IOWIN*)ret) = w32fiow; } return ret; } voidpf ZCALLBACK win32_open64_file_func (voidpf opaque,const void* filename,int mode) { const char* mode_fopen = NULL; DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ; HANDLE hFile = NULL; win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes); #ifdef IOWIN32_USING_WINRT_API #ifdef UNICODE if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL); #else if ((filename!=NULL) && (dwDesiredAccess != 0)) { WCHAR filenameW[FILENAME_MAX + 0x200 + 1]; MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200); hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL); } #endif #else if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL); #endif return win32_build_iowin(hFile); } voidpf ZCALLBACK win32_open64_file_funcA (voidpf opaque,const void* filename,int mode) { const char* mode_fopen = NULL; DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ; HANDLE hFile = NULL; win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes); #ifdef IOWIN32_USING_WINRT_API if ((filename!=NULL) && (dwDesiredAccess != 0)) { WCHAR filenameW[FILENAME_MAX + 0x200 + 1]; MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200); hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL); } #else if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL); #endif return win32_build_iowin(hFile); } voidpf ZCALLBACK win32_open64_file_funcW (voidpf opaque,const void* filename,int mode) { const char* mode_fopen = NULL; DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ; HANDLE hFile = NULL; win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes); #ifdef IOWIN32_USING_WINRT_API if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFile2((LPCWSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition,NULL); #else if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL); #endif return win32_build_iowin(hFile); } voidpf ZCALLBACK win32_open_file_func (voidpf opaque,const char* filename,int mode) { const char* mode_fopen = NULL; DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ; HANDLE hFile = NULL; win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes); #ifdef IOWIN32_USING_WINRT_API #ifdef UNICODE if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL); #else if ((filename!=NULL) && (dwDesiredAccess != 0)) { WCHAR filenameW[FILENAME_MAX + 0x200 + 1]; MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200); hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL); } #endif #else if ((filename!=NULL) && (dwDesiredAccess != 0)) hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL); #endif return win32_build_iowin(hFile); } uLong ZCALLBACK win32_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size) { uLong ret=0; HANDLE hFile = NULL; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream) -> hf; if (hFile != NULL) { if (!ReadFile(hFile, buf, size, &ret, NULL)) { DWORD dwErr = GetLastError(); if (dwErr == ERROR_HANDLE_EOF) dwErr = 0; ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; } } return ret; } uLong ZCALLBACK win32_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size) { uLong ret=0; HANDLE hFile = NULL; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream) -> hf; if (hFile != NULL) { if (!WriteFile(hFile, buf, size, &ret, NULL)) { DWORD dwErr = GetLastError(); if (dwErr == ERROR_HANDLE_EOF) dwErr = 0; ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; } } return ret; } static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *newPos, DWORD dwMoveMethod) { #ifdef IOWIN32_USING_WINRT_API return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod); #else LONG lHigh = pos.HighPart; DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod); BOOL fOk = TRUE; if (dwNewPos == 0xFFFFFFFF) if (GetLastError() != NO_ERROR) fOk = FALSE; if ((newPos != NULL) && (fOk)) { newPos->LowPart = dwNewPos; newPos->HighPart = lHigh; } return fOk; #endif } long ZCALLBACK win32_tell_file_func (voidpf opaque,voidpf stream) { long ret=-1; HANDLE hFile = NULL; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream) -> hf; if (hFile != NULL) { LARGE_INTEGER pos; pos.QuadPart = 0; if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT)) { DWORD dwErr = GetLastError(); ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; ret = -1; } else ret=(long)pos.LowPart; } return ret; } ZPOS64_T ZCALLBACK win32_tell64_file_func (voidpf opaque, voidpf stream) { ZPOS64_T ret= (ZPOS64_T)-1; HANDLE hFile = NULL; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream)->hf; if (hFile) { LARGE_INTEGER pos; pos.QuadPart = 0; if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT)) { DWORD dwErr = GetLastError(); ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; ret = (ZPOS64_T)-1; } else ret=pos.QuadPart; } return ret; } long ZCALLBACK win32_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin) { DWORD dwMoveMethod=0xFFFFFFFF; HANDLE hFile = NULL; long ret=-1; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream) -> hf; switch (origin) { case ZLIB_FILEFUNC_SEEK_CUR : dwMoveMethod = FILE_CURRENT; break; case ZLIB_FILEFUNC_SEEK_END : dwMoveMethod = FILE_END; break; case ZLIB_FILEFUNC_SEEK_SET : dwMoveMethod = FILE_BEGIN; break; default: return -1; } if (hFile != NULL) { LARGE_INTEGER pos; pos.QuadPart = offset; if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod)) { DWORD dwErr = GetLastError(); ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; ret = -1; } else ret=0; } return ret; } long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T offset,int origin) { DWORD dwMoveMethod=0xFFFFFFFF; HANDLE hFile = NULL; long ret=-1; if (stream!=NULL) hFile = ((WIN32FILE_IOWIN*)stream)->hf; switch (origin) { case ZLIB_FILEFUNC_SEEK_CUR : dwMoveMethod = FILE_CURRENT; break; case ZLIB_FILEFUNC_SEEK_END : dwMoveMethod = FILE_END; break; case ZLIB_FILEFUNC_SEEK_SET : dwMoveMethod = FILE_BEGIN; break; default: return -1; } if (hFile) { LARGE_INTEGER pos; pos.QuadPart = offset; if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod)) { DWORD dwErr = GetLastError(); ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr; ret = -1; } else ret=0; } return ret; } int ZCALLBACK win32_close_file_func (voidpf opaque, voidpf stream) { int ret=-1; if (stream!=NULL) { HANDLE hFile; hFile = ((WIN32FILE_IOWIN*)stream) -> hf; if (hFile != NULL) { CloseHandle(hFile); ret=0; } free(stream); } return ret; } int ZCALLBACK win32_error_file_func (voidpf opaque,voidpf stream) { int ret=-1; if (stream!=NULL) { ret = ((WIN32FILE_IOWIN*)stream) -> error; } return ret; } void fill_win32_filefunc (zlib_filefunc_def* pzlib_filefunc_def) { pzlib_filefunc_def->zopen_file = win32_open_file_func; pzlib_filefunc_def->zread_file = win32_read_file_func; pzlib_filefunc_def->zwrite_file = win32_write_file_func; pzlib_filefunc_def->ztell_file = win32_tell_file_func; pzlib_filefunc_def->zseek_file = win32_seek_file_func; pzlib_filefunc_def->zclose_file = win32_close_file_func; pzlib_filefunc_def->zerror_file = win32_error_file_func; pzlib_filefunc_def->opaque = NULL; } void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def) { pzlib_filefunc_def->zopen64_file = win32_open64_file_func; pzlib_filefunc_def->zread_file = win32_read_file_func; pzlib_filefunc_def->zwrite_file = win32_write_file_func; pzlib_filefunc_def->ztell64_file = win32_tell64_file_func; pzlib_filefunc_def->zseek64_file = win32_seek64_file_func; pzlib_filefunc_def->zclose_file = win32_close_file_func; pzlib_filefunc_def->zerror_file = win32_error_file_func; pzlib_filefunc_def->opaque = NULL; } void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def) { pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA; pzlib_filefunc_def->zread_file = win32_read_file_func; pzlib_filefunc_def->zwrite_file = win32_write_file_func; pzlib_filefunc_def->ztell64_file = win32_tell64_file_func; pzlib_filefunc_def->zseek64_file = win32_seek64_file_func; pzlib_filefunc_def->zclose_file = win32_close_file_func; pzlib_filefunc_def->zerror_file = win32_error_file_func; pzlib_filefunc_def->opaque = NULL; } void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def) { pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW; pzlib_filefunc_def->zread_file = win32_read_file_func; pzlib_filefunc_def->zwrite_file = win32_write_file_func; pzlib_filefunc_def->ztell64_file = win32_tell64_file_func; pzlib_filefunc_def->zseek64_file = win32_seek64_file_func; pzlib_filefunc_def->zclose_file = win32_close_file_func; pzlib_filefunc_def->zerror_file = win32_error_file_func; pzlib_filefunc_def->opaque = NULL; } zlib-1.2.11.dfsg/contrib/minizip/miniunz.c0000644000175000017500000004254311420623010020303 0ustar brooniebroonie/* miniunz.c Version 1.1, February 14h, 2010 sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications of Unzip for Zip64 Copyright (C) 2007-2008 Even Rouault Modifications for Zip64 support on both zip and unzip Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) */ #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) #ifndef __USE_FILE_OFFSET64 #define __USE_FILE_OFFSET64 #endif #ifndef __USE_LARGEFILE64 #define __USE_LARGEFILE64 #endif #ifndef _LARGEFILE64_SOURCE #define _LARGEFILE64_SOURCE #endif #ifndef _FILE_OFFSET_BIT #define _FILE_OFFSET_BIT 64 #endif #endif #ifdef __APPLE__ // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions #define FOPEN_FUNC(filename, mode) fopen(filename, mode) #define FTELLO_FUNC(stream) ftello(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin) #else #define FOPEN_FUNC(filename, mode) fopen64(filename, mode) #define FTELLO_FUNC(stream) ftello64(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin) #endif #include #include #include #include #include #include #ifdef _WIN32 # include # include #else # include # include #endif #include "unzip.h" #define CASESENSITIVITY (0) #define WRITEBUFFERSIZE (8192) #define MAXFILENAME (256) #ifdef _WIN32 #define USEWIN32IOAPI #include "iowin32.h" #endif /* mini unzip, demo of unzip package usage : Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir] list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT if it exists */ /* change_file_date : change the date/time of a file filename : the filename of the file where date/time must be modified dosdate : the new date at the MSDos format (4 bytes) tmu_date : the SAME new date at the tm_unz format */ void change_file_date(filename,dosdate,tmu_date) const char *filename; uLong dosdate; tm_unz tmu_date; { #ifdef _WIN32 HANDLE hFile; FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite; hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE, 0,NULL,OPEN_EXISTING,0,NULL); GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite); DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal); LocalFileTimeToFileTime(&ftLocal,&ftm); SetFileTime(hFile,&ftm,&ftLastAcc,&ftm); CloseHandle(hFile); #else #ifdef unix || __APPLE__ struct utimbuf ut; struct tm newdate; newdate.tm_sec = tmu_date.tm_sec; newdate.tm_min=tmu_date.tm_min; newdate.tm_hour=tmu_date.tm_hour; newdate.tm_mday=tmu_date.tm_mday; newdate.tm_mon=tmu_date.tm_mon; if (tmu_date.tm_year > 1900) newdate.tm_year=tmu_date.tm_year - 1900; else newdate.tm_year=tmu_date.tm_year ; newdate.tm_isdst=-1; ut.actime=ut.modtime=mktime(&newdate); utime(filename,&ut); #endif #endif } /* mymkdir and change_file_date are not 100 % portable As I don't know well Unix, I wait feedback for the unix portion */ int mymkdir(dirname) const char* dirname; { int ret=0; #ifdef _WIN32 ret = _mkdir(dirname); #elif unix ret = mkdir (dirname,0775); #elif __APPLE__ ret = mkdir (dirname,0775); #endif return ret; } int makedir (newdir) char *newdir; { char *buffer ; char *p; int len = (int)strlen(newdir); if (len <= 0) return 0; buffer = (char*)malloc(len+1); if (buffer==NULL) { printf("Error allocating memory\n"); return UNZ_INTERNALERROR; } strcpy(buffer,newdir); if (buffer[len-1] == '/') { buffer[len-1] = '\0'; } if (mymkdir(buffer) == 0) { free(buffer); return 1; } p = buffer+1; while (1) { char hold; while(*p && *p != '\\' && *p != '/') p++; hold = *p; *p = 0; if ((mymkdir(buffer) == -1) && (errno == ENOENT)) { printf("couldn't create directory %s\n",buffer); free(buffer); return 0; } if (hold == 0) break; *p++ = hold; } free(buffer); return 1; } void do_banner() { printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n"); printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n"); } void do_help() { printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \ " -e Extract without pathname (junk paths)\n" \ " -x Extract with pathname\n" \ " -v list files\n" \ " -l list files\n" \ " -d directory to extract into\n" \ " -o overwrite files without prompting\n" \ " -p extract crypted file using password\n\n"); } void Display64BitsSize(ZPOS64_T n, int size_char) { /* to avoid compatibility problem , we do here the conversion */ char number[21]; int offset=19; int pos_string = 19; number[20]=0; for (;;) { number[offset]=(char)((n%10)+'0'); if (number[offset] != '0') pos_string=offset; n/=10; if (offset==0) break; offset--; } { int size_display_string = 19-pos_string; while (size_char > size_display_string) { size_char--; printf(" "); } } printf("%s",&number[pos_string]); } int do_list(uf) unzFile uf; { uLong i; unz_global_info64 gi; int err; err = unzGetGlobalInfo64(uf,&gi); if (err!=UNZ_OK) printf("error %d with zipfile in unzGetGlobalInfo \n",err); printf(" Length Method Size Ratio Date Time CRC-32 Name\n"); printf(" ------ ------ ---- ----- ---- ---- ------ ----\n"); for (i=0;i0) ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size); /* display a '*' if the file is crypted */ if ((file_info.flag & 1) != 0) charCrypt='*'; if (file_info.compression_method==0) string_method="Stored"; else if (file_info.compression_method==Z_DEFLATED) { uInt iLevel=(uInt)((file_info.flag & 0x6)/2); if (iLevel==0) string_method="Defl:N"; else if (iLevel==1) string_method="Defl:X"; else if ((iLevel==2) || (iLevel==3)) string_method="Defl:F"; /* 2:fast , 3 : extra fast*/ } else if (file_info.compression_method==Z_BZIP2ED) { string_method="BZip2 "; } else string_method="Unkn. "; Display64BitsSize(file_info.uncompressed_size,7); printf(" %6s%c",string_method,charCrypt); Display64BitsSize(file_info.compressed_size,7); printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n", ratio, (uLong)file_info.tmu_date.tm_mon + 1, (uLong)file_info.tmu_date.tm_mday, (uLong)file_info.tmu_date.tm_year % 100, (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min, (uLong)file_info.crc,filename_inzip); if ((i+1)='a') && (rep<='z')) rep -= 0x20; } while ((rep!='Y') && (rep!='N') && (rep!='A')); } if (rep == 'N') skip = 1; if (rep == 'A') *popt_overwrite=1; } if ((skip==0) && (err==UNZ_OK)) { fout=FOPEN_FUNC(write_filename,"wb"); /* some zipfile don't contain directory alone before file */ if ((fout==NULL) && ((*popt_extract_without_path)==0) && (filename_withoutpath!=(char*)filename_inzip)) { char c=*(filename_withoutpath-1); *(filename_withoutpath-1)='\0'; makedir(write_filename); *(filename_withoutpath-1)=c; fout=FOPEN_FUNC(write_filename,"wb"); } if (fout==NULL) { printf("error opening %s\n",write_filename); } } if (fout!=NULL) { printf(" extracting: %s\n",write_filename); do { err = unzReadCurrentFile(uf,buf,size_buf); if (err<0) { printf("error %d with zipfile in unzReadCurrentFile\n",err); break; } if (err>0) if (fwrite(buf,err,1,fout)!=1) { printf("error in writing extracted file\n"); err=UNZ_ERRNO; break; } } while (err>0); if (fout) fclose(fout); if (err==0) change_file_date(write_filename,file_info.dosDate, file_info.tmu_date); } if (err==UNZ_OK) { err = unzCloseCurrentFile (uf); if (err!=UNZ_OK) { printf("error %d with zipfile in unzCloseCurrentFile\n",err); } } else unzCloseCurrentFile(uf); /* don't lose the error */ } free(buf); return err; } int do_extract(uf,opt_extract_without_path,opt_overwrite,password) unzFile uf; int opt_extract_without_path; int opt_overwrite; const char* password; { uLong i; unz_global_info64 gi; int err; FILE* fout=NULL; err = unzGetGlobalInfo64(uf,&gi); if (err!=UNZ_OK) printf("error %d with zipfile in unzGetGlobalInfo \n",err); for (i=0;i #include #include "zlib.h" #if defined(USE_FILE32API) #define fopen64 fopen #define ftello64 ftell #define fseeko64 fseek #else #ifdef __FreeBSD__ #define fopen64 fopen #define ftello64 ftello #define fseeko64 fseeko #endif #ifdef _MSC_VER #define fopen64 fopen #if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC))) #define ftello64 _ftelli64 #define fseeko64 _fseeki64 #else // old MSC #define ftello64 ftell #define fseeko64 fseek #endif #endif #endif /* #ifndef ZPOS64_T #ifdef _WIN32 #define ZPOS64_T fpos_t #else #include #define ZPOS64_T uint64_t #endif #endif */ #ifdef HAVE_MINIZIP64_CONF_H #include "mz64conf.h" #endif /* a type choosen by DEFINE */ #ifdef HAVE_64BIT_INT_CUSTOM typedef 64BIT_INT_CUSTOM_TYPE ZPOS64_T; #else #ifdef HAS_STDINT_H #include "stdint.h" typedef uint64_t ZPOS64_T; #else /* Maximum unsigned 32-bit value used as placeholder for zip64 */ #define MAXU32 0xffffffff #if defined(_MSC_VER) || defined(__BORLANDC__) typedef unsigned __int64 ZPOS64_T; #else typedef unsigned long long int ZPOS64_T; #endif #endif #endif #ifdef __cplusplus extern "C" { #endif #define ZLIB_FILEFUNC_SEEK_CUR (1) #define ZLIB_FILEFUNC_SEEK_END (2) #define ZLIB_FILEFUNC_SEEK_SET (0) #define ZLIB_FILEFUNC_MODE_READ (1) #define ZLIB_FILEFUNC_MODE_WRITE (2) #define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3) #define ZLIB_FILEFUNC_MODE_EXISTING (4) #define ZLIB_FILEFUNC_MODE_CREATE (8) #ifndef ZCALLBACK #if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK) #define ZCALLBACK CALLBACK #else #define ZCALLBACK #endif #endif typedef voidpf (ZCALLBACK *open_file_func) OF((voidpf opaque, const char* filename, int mode)); typedef uLong (ZCALLBACK *read_file_func) OF((voidpf opaque, voidpf stream, void* buf, uLong size)); typedef uLong (ZCALLBACK *write_file_func) OF((voidpf opaque, voidpf stream, const void* buf, uLong size)); typedef int (ZCALLBACK *close_file_func) OF((voidpf opaque, voidpf stream)); typedef int (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream)); typedef long (ZCALLBACK *tell_file_func) OF((voidpf opaque, voidpf stream)); typedef long (ZCALLBACK *seek_file_func) OF((voidpf opaque, voidpf stream, uLong offset, int origin)); /* here is the "old" 32 bits structure structure */ typedef struct zlib_filefunc_def_s { open_file_func zopen_file; read_file_func zread_file; write_file_func zwrite_file; tell_file_func ztell_file; seek_file_func zseek_file; close_file_func zclose_file; testerror_file_func zerror_file; voidpf opaque; } zlib_filefunc_def; typedef ZPOS64_T (ZCALLBACK *tell64_file_func) OF((voidpf opaque, voidpf stream)); typedef long (ZCALLBACK *seek64_file_func) OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); typedef voidpf (ZCALLBACK *open64_file_func) OF((voidpf opaque, const void* filename, int mode)); typedef struct zlib_filefunc64_def_s { open64_file_func zopen64_file; read_file_func zread_file; write_file_func zwrite_file; tell64_file_func ztell64_file; seek64_file_func zseek64_file; close_file_func zclose_file; testerror_file_func zerror_file; voidpf opaque; } zlib_filefunc64_def; void fill_fopen64_filefunc OF((zlib_filefunc64_def* pzlib_filefunc_def)); void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def)); /* now internal definition, only for zip.c and unzip.h */ typedef struct zlib_filefunc64_32_def_s { zlib_filefunc64_def zfile_func64; open_file_func zopen32_file; tell_file_func ztell32_file; seek_file_func zseek32_file; } zlib_filefunc64_32_def; #define ZREAD64(filefunc,filestream,buf,size) ((*((filefunc).zfile_func64.zread_file)) ((filefunc).zfile_func64.opaque,filestream,buf,size)) #define ZWRITE64(filefunc,filestream,buf,size) ((*((filefunc).zfile_func64.zwrite_file)) ((filefunc).zfile_func64.opaque,filestream,buf,size)) //#define ZTELL64(filefunc,filestream) ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream)) //#define ZSEEK64(filefunc,filestream,pos,mode) ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode)) #define ZCLOSE64(filefunc,filestream) ((*((filefunc).zfile_func64.zclose_file)) ((filefunc).zfile_func64.opaque,filestream)) #define ZERROR64(filefunc,filestream) ((*((filefunc).zfile_func64.zerror_file)) ((filefunc).zfile_func64.opaque,filestream)) voidpf call_zopen64 OF((const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)); long call_zseek64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)); ZPOS64_T call_ztell64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)); void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32); #define ZOPEN64(filefunc,filename,mode) (call_zopen64((&(filefunc)),(filename),(mode))) #define ZTELL64(filefunc,filestream) (call_ztell64((&(filefunc)),(filestream))) #define ZSEEK64(filefunc,filestream,pos,mode) (call_zseek64((&(filefunc)),(filestream),(pos),(mode))) #ifdef __cplusplus } #endif #endif zlib-1.2.11.dfsg/contrib/minizip/mztools.c0000644000175000017500000001772211706614365020346 0ustar brooniebroonie/* Additional tools for Minizip Code: Xavier Roche '2004 License: Same as ZLIB (www.gzip.org) */ /* Code */ #include #include #include #include "zlib.h" #include "unzip.h" #define READ_8(adr) ((unsigned char)*(adr)) #define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) ) #define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) ) #define WRITE_8(buff, n) do { \ *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \ } while(0) #define WRITE_16(buff, n) do { \ WRITE_8((unsigned char*)(buff), n); \ WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \ } while(0) #define WRITE_32(buff, n) do { \ WRITE_16((unsigned char*)(buff), (n) & 0xffff); \ WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \ } while(0) extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered) const char* file; const char* fileOut; const char* fileOutTmp; uLong* nRecovered; uLong* bytesRecovered; { int err = Z_OK; FILE* fpZip = fopen(file, "rb"); FILE* fpOut = fopen(fileOut, "wb"); FILE* fpOutCD = fopen(fileOutTmp, "wb"); if (fpZip != NULL && fpOut != NULL) { int entries = 0; uLong totalBytes = 0; char header[30]; char filename[1024]; char extra[1024]; int offset = 0; int offsetCD = 0; while ( fread(header, 1, 30, fpZip) == 30 ) { int currentOffset = offset; /* File entry */ if (READ_32(header) == 0x04034b50) { unsigned int version = READ_16(header + 4); unsigned int gpflag = READ_16(header + 6); unsigned int method = READ_16(header + 8); unsigned int filetime = READ_16(header + 10); unsigned int filedate = READ_16(header + 12); unsigned int crc = READ_32(header + 14); /* crc */ unsigned int cpsize = READ_32(header + 18); /* compressed size */ unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */ unsigned int fnsize = READ_16(header + 26); /* file name length */ unsigned int extsize = READ_16(header + 28); /* extra field length */ filename[0] = extra[0] = '\0'; /* Header */ if (fwrite(header, 1, 30, fpOut) == 30) { offset += 30; } else { err = Z_ERRNO; break; } /* Filename */ if (fnsize > 0) { if (fnsize < sizeof(filename)) { if (fread(filename, 1, fnsize, fpZip) == fnsize) { if (fwrite(filename, 1, fnsize, fpOut) == fnsize) { offset += fnsize; } else { err = Z_ERRNO; break; } } else { err = Z_ERRNO; break; } } else { err = Z_ERRNO; break; } } else { err = Z_STREAM_ERROR; break; } /* Extra field */ if (extsize > 0) { if (extsize < sizeof(extra)) { if (fread(extra, 1, extsize, fpZip) == extsize) { if (fwrite(extra, 1, extsize, fpOut) == extsize) { offset += extsize; } else { err = Z_ERRNO; break; } } else { err = Z_ERRNO; break; } } else { err = Z_ERRNO; break; } } /* Data */ { int dataSize = cpsize; if (dataSize == 0) { dataSize = uncpsize; } if (dataSize > 0) { char* data = malloc(dataSize); if (data != NULL) { if ((int)fread(data, 1, dataSize, fpZip) == dataSize) { if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) { offset += dataSize; totalBytes += dataSize; } else { err = Z_ERRNO; } } else { err = Z_ERRNO; } free(data); if (err != Z_OK) { break; } } else { err = Z_MEM_ERROR; break; } } } /* Central directory entry */ { char header[46]; char* comment = ""; int comsize = (int) strlen(comment); WRITE_32(header, 0x02014b50); WRITE_16(header + 4, version); WRITE_16(header + 6, version); WRITE_16(header + 8, gpflag); WRITE_16(header + 10, method); WRITE_16(header + 12, filetime); WRITE_16(header + 14, filedate); WRITE_32(header + 16, crc); WRITE_32(header + 20, cpsize); WRITE_32(header + 24, uncpsize); WRITE_16(header + 28, fnsize); WRITE_16(header + 30, extsize); WRITE_16(header + 32, comsize); WRITE_16(header + 34, 0); /* disk # */ WRITE_16(header + 36, 0); /* int attrb */ WRITE_32(header + 38, 0); /* ext attrb */ WRITE_32(header + 42, currentOffset); /* Header */ if (fwrite(header, 1, 46, fpOutCD) == 46) { offsetCD += 46; /* Filename */ if (fnsize > 0) { if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) { offsetCD += fnsize; } else { err = Z_ERRNO; break; } } else { err = Z_STREAM_ERROR; break; } /* Extra field */ if (extsize > 0) { if (fwrite(extra, 1, extsize, fpOutCD) == extsize) { offsetCD += extsize; } else { err = Z_ERRNO; break; } } /* Comment field */ if (comsize > 0) { if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) { offsetCD += comsize; } else { err = Z_ERRNO; break; } } } else { err = Z_ERRNO; break; } } /* Success */ entries++; } else { break; } } /* Final central directory */ { int entriesZip = entries; char header[22]; char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools"; int comsize = (int) strlen(comment); if (entriesZip > 0xffff) { entriesZip = 0xffff; } WRITE_32(header, 0x06054b50); WRITE_16(header + 4, 0); /* disk # */ WRITE_16(header + 6, 0); /* disk # */ WRITE_16(header + 8, entriesZip); /* hack */ WRITE_16(header + 10, entriesZip); /* hack */ WRITE_32(header + 12, offsetCD); /* size of CD */ WRITE_32(header + 16, offset); /* offset to CD */ WRITE_16(header + 20, comsize); /* comment */ /* Header */ if (fwrite(header, 1, 22, fpOutCD) == 22) { /* Comment field */ if (comsize > 0) { if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) { err = Z_ERRNO; } } } else { err = Z_ERRNO; } } /* Final merge (file + central directory) */ fclose(fpOutCD); if (err == Z_OK) { fpOutCD = fopen(fileOutTmp, "rb"); if (fpOutCD != NULL) { int nRead; char buffer[8192]; while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) { if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) { err = Z_ERRNO; break; } } fclose(fpOutCD); } } /* Close */ fclose(fpZip); fclose(fpOut); /* Wipe temporary file */ (void)remove(fileOutTmp); /* Number of recovered entries */ if (err == Z_OK) { if (nRecovered != NULL) { *nRecovered = entries; } if (bytesRecovered != NULL) { *bytesRecovered = totalBytes; } } } else { err = Z_STREAM_ERROR; } return err; } zlib-1.2.11.dfsg/contrib/minizip/Makefile0000644000175000017500000000071111320315464020107 0ustar brooniebroonieCC=cc CFLAGS=-O -I../.. UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a ZIP_OBJS = minizip.o zip.o ioapi.o ../../libz.a .c.o: $(CC) -c $(CFLAGS) $*.c all: miniunz minizip miniunz: $(UNZ_OBJS) $(CC) $(CFLAGS) -o $@ $(UNZ_OBJS) minizip: $(ZIP_OBJS) $(CC) $(CFLAGS) -o $@ $(ZIP_OBJS) test: miniunz minizip ./minizip test readme.txt ./miniunz -l test.zip mv readme.txt readme.old ./miniunz test.zip clean: /bin/rm -f *.o *~ minizip miniunz zlib-1.2.11.dfsg/contrib/minizip/minizip.c0000644000175000017500000003527211706614532020312 0ustar brooniebroonie/* minizip.c Version 1.1, February 14h, 2010 sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications of Unzip for Zip64 Copyright (C) 2007-2008 Even Rouault Modifications for Zip64 support on both zip and unzip Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) */ #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) #ifndef __USE_FILE_OFFSET64 #define __USE_FILE_OFFSET64 #endif #ifndef __USE_LARGEFILE64 #define __USE_LARGEFILE64 #endif #ifndef _LARGEFILE64_SOURCE #define _LARGEFILE64_SOURCE #endif #ifndef _FILE_OFFSET_BIT #define _FILE_OFFSET_BIT 64 #endif #endif #ifdef __APPLE__ // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions #define FOPEN_FUNC(filename, mode) fopen(filename, mode) #define FTELLO_FUNC(stream) ftello(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin) #else #define FOPEN_FUNC(filename, mode) fopen64(filename, mode) #define FTELLO_FUNC(stream) ftello64(stream) #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin) #endif #include #include #include #include #include #include #ifdef _WIN32 # include # include #else # include # include # include # include #endif #include "zip.h" #ifdef _WIN32 #define USEWIN32IOAPI #include "iowin32.h" #endif #define WRITEBUFFERSIZE (16384) #define MAXFILENAME (256) #ifdef _WIN32 uLong filetime(f, tmzip, dt) char *f; /* name of file to get info on */ tm_zip *tmzip; /* return value: access, modific. and creation times */ uLong *dt; /* dostime */ { int ret = 0; { FILETIME ftLocal; HANDLE hFind; WIN32_FIND_DATAA ff32; hFind = FindFirstFileA(f,&ff32); if (hFind != INVALID_HANDLE_VALUE) { FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal); FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0); FindClose(hFind); ret = 1; } } return ret; } #else #ifdef unix || __APPLE__ uLong filetime(f, tmzip, dt) char *f; /* name of file to get info on */ tm_zip *tmzip; /* return value: access, modific. and creation times */ uLong *dt; /* dostime */ { int ret=0; struct stat s; /* results of stat() */ struct tm* filedate; time_t tm_t=0; if (strcmp(f,"-")!=0) { char name[MAXFILENAME+1]; int len = strlen(f); if (len > MAXFILENAME) len = MAXFILENAME; strncpy(name, f,MAXFILENAME-1); /* strncpy doesnt append the trailing NULL, of the string is too long. */ name[ MAXFILENAME ] = '\0'; if (name[len - 1] == '/') name[len - 1] = '\0'; /* not all systems allow stat'ing a file with / appended */ if (stat(name,&s)==0) { tm_t = s.st_mtime; ret = 1; } } filedate = localtime(&tm_t); tmzip->tm_sec = filedate->tm_sec; tmzip->tm_min = filedate->tm_min; tmzip->tm_hour = filedate->tm_hour; tmzip->tm_mday = filedate->tm_mday; tmzip->tm_mon = filedate->tm_mon ; tmzip->tm_year = filedate->tm_year; return ret; } #else uLong filetime(f, tmzip, dt) char *f; /* name of file to get info on */ tm_zip *tmzip; /* return value: access, modific. and creation times */ uLong *dt; /* dostime */ { return 0; } #endif #endif int check_exist_file(filename) const char* filename; { FILE* ftestexist; int ret = 1; ftestexist = FOPEN_FUNC(filename,"rb"); if (ftestexist==NULL) ret = 0; else fclose(ftestexist); return ret; } void do_banner() { printf("MiniZip 1.1, demo of zLib + MiniZip64 package, written by Gilles Vollant\n"); printf("more info on MiniZip at http://www.winimage.com/zLibDll/minizip.html\n\n"); } void do_help() { printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] [-j] file.zip [files_to_add]\n\n" \ " -o Overwrite existing file.zip\n" \ " -a Append to existing file.zip\n" \ " -0 Store only\n" \ " -1 Compress faster\n" \ " -9 Compress better\n\n" \ " -j exclude path. store only the file name.\n\n"); } /* calculate the CRC32 of a file, because to encrypt a file, we need known the CRC32 of the file before */ int getFileCrc(const char* filenameinzip,void*buf,unsigned long size_buf,unsigned long* result_crc) { unsigned long calculate_crc=0; int err=ZIP_OK; FILE * fin = FOPEN_FUNC(filenameinzip,"rb"); unsigned long size_read = 0; unsigned long total_read = 0; if (fin==NULL) { err = ZIP_ERRNO; } if (err == ZIP_OK) do { err = ZIP_OK; size_read = (int)fread(buf,1,size_buf,fin); if (size_read < size_buf) if (feof(fin)==0) { printf("error in reading %s\n",filenameinzip); err = ZIP_ERRNO; } if (size_read>0) calculate_crc = crc32(calculate_crc,buf,size_read); total_read += size_read; } while ((err == ZIP_OK) && (size_read>0)); if (fin) fclose(fin); *result_crc=calculate_crc; printf("file %s crc %lx\n", filenameinzip, calculate_crc); return err; } int isLargeFile(const char* filename) { int largeFile = 0; ZPOS64_T pos = 0; FILE* pFile = FOPEN_FUNC(filename, "rb"); if(pFile != NULL) { int n = FSEEKO_FUNC(pFile, 0, SEEK_END); pos = FTELLO_FUNC(pFile); printf("File : %s is %lld bytes\n", filename, pos); if(pos >= 0xffffffff) largeFile = 1; fclose(pFile); } return largeFile; } int main(argc,argv) int argc; char *argv[]; { int i; int opt_overwrite=0; int opt_compress_level=Z_DEFAULT_COMPRESSION; int opt_exclude_path=0; int zipfilenamearg = 0; char filename_try[MAXFILENAME+16]; int zipok; int err=0; int size_buf=0; void* buf=NULL; const char* password=NULL; do_banner(); if (argc==1) { do_help(); return 0; } else { for (i=1;i='0') && (c<='9')) opt_compress_level = c-'0'; if ((c=='j') || (c=='J')) opt_exclude_path = 1; if (((c=='p') || (c=='P')) && (i+1='a') && (rep<='z')) rep -= 0x20; } while ((rep!='Y') && (rep!='N') && (rep!='A')); if (rep=='N') zipok = 0; if (rep=='A') opt_overwrite = 2; } } if (zipok==1) { zipFile zf; int errclose; # ifdef USEWIN32IOAPI zlib_filefunc64_def ffunc; fill_win32_filefunc64A(&ffunc); zf = zipOpen2_64(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc); # else zf = zipOpen64(filename_try,(opt_overwrite==2) ? 2 : 0); # endif if (zf == NULL) { printf("error opening %s\n",filename_try); err= ZIP_ERRNO; } else printf("creating %s\n",filename_try); for (i=zipfilenamearg+1;(i='0') || (argv[i][1]<='9'))) && (strlen(argv[i]) == 2))) { FILE * fin; int size_read; const char* filenameinzip = argv[i]; const char *savefilenameinzip; zip_fileinfo zi; unsigned long crcFile=0; int zip64 = 0; zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour = zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0; zi.dosDate = 0; zi.internal_fa = 0; zi.external_fa = 0; filetime(filenameinzip,&zi.tmz_date,&zi.dosDate); /* err = zipOpenNewFileInZip(zf,filenameinzip,&zi, NULL,0,NULL,0,NULL / * comment * /, (opt_compress_level != 0) ? Z_DEFLATED : 0, opt_compress_level); */ if ((password != NULL) && (err==ZIP_OK)) err = getFileCrc(filenameinzip,buf,size_buf,&crcFile); zip64 = isLargeFile(filenameinzip); /* The path name saved, should not include a leading slash. */ /*if it did, windows/xp and dynazip couldn't read the zip file. */ savefilenameinzip = filenameinzip; while( savefilenameinzip[0] == '\\' || savefilenameinzip[0] == '/' ) { savefilenameinzip++; } /*should the zip file contain any path at all?*/ if( opt_exclude_path ) { const char *tmpptr; const char *lastslash = 0; for( tmpptr = savefilenameinzip; *tmpptr; tmpptr++) { if( *tmpptr == '\\' || *tmpptr == '/') { lastslash = tmpptr; } } if( lastslash != NULL ) { savefilenameinzip = lastslash+1; // base filename follows last slash. } } /**/ err = zipOpenNewFileInZip3_64(zf,savefilenameinzip,&zi, NULL,0,NULL,0,NULL /* comment*/, (opt_compress_level != 0) ? Z_DEFLATED : 0, opt_compress_level,0, /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */ -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, password,crcFile, zip64); if (err != ZIP_OK) printf("error in opening %s in zipfile\n",filenameinzip); else { fin = FOPEN_FUNC(filenameinzip,"rb"); if (fin==NULL) { err=ZIP_ERRNO; printf("error in opening %s for reading\n",filenameinzip); } } if (err == ZIP_OK) do { err = ZIP_OK; size_read = (int)fread(buf,1,size_buf,fin); if (size_read < size_buf) if (feof(fin)==0) { printf("error in reading %s\n",filenameinzip); err = ZIP_ERRNO; } if (size_read>0) { err = zipWriteInFileInZip (zf,buf,size_read); if (err<0) { printf("error in writing %s in the zipfile\n", filenameinzip); } } } while ((err == ZIP_OK) && (size_read>0)); if (fin) fclose(fin); if (err<0) err=ZIP_ERRNO; else { err = zipCloseFileInZip(zf); if (err!=ZIP_OK) printf("error in closing %s in the zipfile\n", filenameinzip); } } } errclose = zipClose(zf,NULL); if (errclose != ZIP_OK) printf("error in closing %s\n",filename_try); } else { do_help(); } free(buf); return 0; } zlib-1.2.11.dfsg/contrib/minizip/zip.h0000644000175000017500000003600611336233336017434 0ustar brooniebroonie/* zip.h -- IO on .zip files using zlib Version 1.1, February 14h, 2010 part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) Modifications for Zip64 support Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) For more info read MiniZip_info.txt --------------------------------------------------------------------------- Condition of use and distribution are the same than zlib : This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. --------------------------------------------------------------------------- Changes See header of zip.h */ #ifndef _zip12_H #define _zip12_H #ifdef __cplusplus extern "C" { #endif //#define HAVE_BZIP2 #ifndef _ZLIB_H #include "zlib.h" #endif #ifndef _ZLIBIOAPI_H #include "ioapi.h" #endif #ifdef HAVE_BZIP2 #include "bzlib.h" #endif #define Z_BZIP2ED 12 #if defined(STRICTZIP) || defined(STRICTZIPUNZIP) /* like the STRICT of WIN32, we define a pointer that cannot be converted from (void*) without cast */ typedef struct TagzipFile__ { int unused; } zipFile__; typedef zipFile__ *zipFile; #else typedef voidp zipFile; #endif #define ZIP_OK (0) #define ZIP_EOF (0) #define ZIP_ERRNO (Z_ERRNO) #define ZIP_PARAMERROR (-102) #define ZIP_BADZIPFILE (-103) #define ZIP_INTERNALERROR (-104) #ifndef DEF_MEM_LEVEL # if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 # else # define DEF_MEM_LEVEL MAX_MEM_LEVEL # endif #endif /* default memLevel */ /* tm_zip contain date/time info */ typedef struct tm_zip_s { uInt tm_sec; /* seconds after the minute - [0,59] */ uInt tm_min; /* minutes after the hour - [0,59] */ uInt tm_hour; /* hours since midnight - [0,23] */ uInt tm_mday; /* day of the month - [1,31] */ uInt tm_mon; /* months since January - [0,11] */ uInt tm_year; /* years - [1980..2044] */ } tm_zip; typedef struct { tm_zip tmz_date; /* date in understandable format */ uLong dosDate; /* if dos_date == 0, tmu_date is used */ /* uLong flag; */ /* general purpose bit flag 2 bytes */ uLong internal_fa; /* internal file attributes 2 bytes */ uLong external_fa; /* external file attributes 4 bytes */ } zip_fileinfo; typedef const char* zipcharpc; #define APPEND_STATUS_CREATE (0) #define APPEND_STATUS_CREATEAFTER (1) #define APPEND_STATUS_ADDINZIP (2) extern zipFile ZEXPORT zipOpen OF((const char *pathname, int append)); extern zipFile ZEXPORT zipOpen64 OF((const void *pathname, int append)); /* Create a zipfile. pathname contain on Windows XP a filename like "c:\\zlib\\zlib113.zip" or on an Unix computer "zlib/zlib113.zip". if the file pathname exist and append==APPEND_STATUS_CREATEAFTER, the zip will be created at the end of the file. (useful if the file contain a self extractor code) if the file pathname exist and append==APPEND_STATUS_ADDINZIP, we will add files in existing zip (be sure you don't add file that doesn't exist) If the zipfile cannot be opened, the return value is NULL. Else, the return value is a zipFile Handle, usable with other function of this zip package. */ /* Note : there is no delete function into a zipfile. If you want delete file into a zipfile, you must open a zipfile, and create another Of couse, you can use RAW reading and writing to copy the file you did not want delte */ extern zipFile ZEXPORT zipOpen2 OF((const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc_def)); extern zipFile ZEXPORT zipOpen2_64 OF((const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def)); extern int ZEXPORT zipOpenNewFileInZip OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level)); extern int ZEXPORT zipOpenNewFileInZip64 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int zip64)); /* Open a file in the ZIP for writing. filename : the filename in zip (if NULL, '-' without quote will be used *zipfi contain supplemental information if extrafield_local!=NULL and size_extrafield_local>0, extrafield_local contains the extrafield data the the local header if extrafield_global!=NULL and size_extrafield_global>0, extrafield_global contains the extrafield data the the local header if comment != NULL, comment contain the comment string method contain the compression method (0 for store, Z_DEFLATED for deflate) level contain the level of compression (can be Z_DEFAULT_COMPRESSION) zip64 is set to 1 if a zip64 extended information block should be added to the local file header. this MUST be '1' if the uncompressed size is >= 0xffffffff. */ extern int ZEXPORT zipOpenNewFileInZip2 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw)); extern int ZEXPORT zipOpenNewFileInZip2_64 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int zip64)); /* Same than zipOpenNewFileInZip, except if raw=1, we write raw file */ extern int ZEXPORT zipOpenNewFileInZip3 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits, int memLevel, int strategy, const char* password, uLong crcForCrypting)); extern int ZEXPORT zipOpenNewFileInZip3_64 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits, int memLevel, int strategy, const char* password, uLong crcForCrypting, int zip64 )); /* Same than zipOpenNewFileInZip2, except windowBits,memLevel,,strategy : see parameter strategy in deflateInit2 password : crypting password (NULL for no crypting) crcForCrypting : crc of file to compress (needed for crypting) */ extern int ZEXPORT zipOpenNewFileInZip4 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits, int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase )); extern int ZEXPORT zipOpenNewFileInZip4_64 OF((zipFile file, const char* filename, const zip_fileinfo* zipfi, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, const char* comment, int method, int level, int raw, int windowBits, int memLevel, int strategy, const char* password, uLong crcForCrypting, uLong versionMadeBy, uLong flagBase, int zip64 )); /* Same than zipOpenNewFileInZip4, except versionMadeBy : value for Version made by field flag : value for flag field (compression level info will be added) */ extern int ZEXPORT zipWriteInFileInZip OF((zipFile file, const void* buf, unsigned len)); /* Write data in the zipfile */ extern int ZEXPORT zipCloseFileInZip OF((zipFile file)); /* Close the current file in the zipfile */ extern int ZEXPORT zipCloseFileInZipRaw OF((zipFile file, uLong uncompressed_size, uLong crc32)); extern int ZEXPORT zipCloseFileInZipRaw64 OF((zipFile file, ZPOS64_T uncompressed_size, uLong crc32)); /* Close the current file in the zipfile, for file opened with parameter raw=1 in zipOpenNewFileInZip2 uncompressed_size and crc32 are value for the uncompressed size */ extern int ZEXPORT zipClose OF((zipFile file, const char* global_comment)); /* Close the zipfile */ extern int ZEXPORT zipRemoveExtraInfoBlock OF((char* pData, int* dataLen, short sHeader)); /* zipRemoveExtraInfoBlock - Added by Mathias Svensson Remove extra information block from a extra information data for the local file header or central directory header It is needed to remove ZIP64 extra information blocks when before data is written if using RAW mode. 0x0001 is the signature header for the ZIP64 extra information blocks usage. Remove ZIP64 Extra information from a central director extra field data zipRemoveExtraInfoBlock(pCenDirExtraFieldData, &nCenDirExtraFieldDataLen, 0x0001); Remove ZIP64 Extra information from a Local File Header extra field data zipRemoveExtraInfoBlock(pLocalHeaderExtraFieldData, &nLocalHeaderExtraFieldDataLen, 0x0001); */ #ifdef __cplusplus } #endif #endif /* _zip64_H */ zlib-1.2.11.dfsg/contrib/minizip/MiniZip64_Changes.txt0000644000175000017500000000015511336232700022371 0ustar brooniebroonie MiniZip 1.1 was derrived from MiniZip at version 1.01f Change in 1.0 (Okt 2009) - **TODO - Add history** zlib-1.2.11.dfsg/contrib/minizip/miniunzip.10000644000175000017500000000350512123706051020555 0ustar brooniebroonie.\" Hey, EMACS: -*- nroff -*- .TH miniunzip 1 "Nov 7, 2001" .\" Please adjust this date whenever revising the manpage. .\" .\" Some roff macros, for reference: .\" .nh disable hyphenation .\" .hy enable hyphenation .\" .ad l left justify .\" .ad b justify to both left and right margins .\" .nf disable filling .\" .fi enable filling .\" .br insert line break .\" .sp insert n+1 empty lines .\" for manpage-specific macros, see man(7) .SH NAME miniunzip - uncompress and examine ZIP archives .SH SYNOPSIS .B miniunzip .RI [ -exvlo ] zipfile [ files_to_extract ] [-d tempdir] .SH DESCRIPTION .B minizip is a simple tool which allows the extraction of compressed file archives in the ZIP format used by the MS-DOS utility PKZIP. It was written as a demonstration of the .IR zlib (3) library and therefore lack many of the features of the .IR unzip (1) program. .SH OPTIONS A number of options are supported. With the exception of .BI \-d\ tempdir these must be supplied before any other arguments and are: .TP .BI \-l\ ,\ \-\-v List the files in the archive without extracting them. .TP .B \-o Overwrite files without prompting for confirmation. .TP .B \-x Extract files (default). .PP The .I zipfile argument is the name of the archive to process. The next argument can be used to specify a single file to extract from the archive. Lastly, the following option can be specified at the end of the command-line: .TP .BI \-d\ tempdir Extract the archive in the directory .I tempdir rather than the current directory. .SH SEE ALSO .BR minizip (1), .BR zlib (3), .BR unzip (1). .SH AUTHOR This program was written by Gilles Vollant. This manual page was written by Mark Brown . The -d tempdir option was added by Dirk Eddelbuettel . zlib-1.2.11.dfsg/contrib/minizip/minizip.10000644000175000017500000000266612123706051020221 0ustar brooniebroonie.\" Hey, EMACS: -*- nroff -*- .TH minizip 1 "May 2, 2001" .\" Please adjust this date whenever revising the manpage. .\" .\" Some roff macros, for reference: .\" .nh disable hyphenation .\" .hy enable hyphenation .\" .ad l left justify .\" .ad b justify to both left and right margins .\" .nf disable filling .\" .fi enable filling .\" .br insert line break .\" .sp insert n+1 empty lines .\" for manpage-specific macros, see man(7) .SH NAME minizip - create ZIP archives .SH SYNOPSIS .B minizip .RI [ -o ] zipfile [ " files" ... ] .SH DESCRIPTION .B minizip is a simple tool which allows the creation of compressed file archives in the ZIP format used by the MS-DOS utility PKZIP. It was written as a demonstration of the .IR zlib (3) library and therefore lack many of the features of the .IR zip (1) program. .SH OPTIONS The first argument supplied is the name of the ZIP archive to create or .RI -o in which case it is ignored and the second argument treated as the name of the ZIP file. If the ZIP file already exists it will be overwritten. .PP Subsequent arguments specify a list of files to place in the ZIP archive. If none are specified then an empty archive will be created. .SH SEE ALSO .BR miniunzip (1), .BR zlib (3), .BR zip (1). .SH AUTHOR This program was written by Gilles Vollant. This manual page was written by Mark Brown . zlib-1.2.11.dfsg/deflate.h0000644000175000017500000003153613032130646015115 0ustar brooniebroonie/* deflate.h -- internal compression state * Copyright (C) 1995-2016 Jean-loup Gailly * For conditions of distribution and use, see copyright notice in zlib.h */ /* WARNING: this file should *not* be used by applications. It is part of the implementation of the compression library and is subject to change. Applications should only use zlib.h. */ /* @(#) $Id$ */ #ifndef DEFLATE_H #define DEFLATE_H #include "zutil.h" /* define NO_GZIP when compiling if you want to disable gzip header and trailer creation by deflate(). NO_GZIP would be used to avoid linking in the crc code when it is not needed. For shared libraries, gzip encoding should be left enabled. */ #ifndef NO_GZIP # define GZIP #endif /* =========================================================================== * Internal compression state. */ #define LENGTH_CODES 29 /* number of length codes, not counting the special END_BLOCK code */ #define LITERALS 256 /* number of literal bytes 0..255 */ #define L_CODES (LITERALS+1+LENGTH_CODES) /* number of Literal or Length codes, including the END_BLOCK code */ #define D_CODES 30 /* number of distance codes */ #define BL_CODES 19 /* number of codes used to transfer the bit lengths */ #define HEAP_SIZE (2*L_CODES+1) /* maximum heap size */ #define MAX_BITS 15 /* All codes must not exceed MAX_BITS bits */ #define Buf_size 16 /* size of bit buffer in bi_buf */ #define INIT_STATE 42 /* zlib header -> BUSY_STATE */ #ifdef GZIP # define GZIP_STATE 57 /* gzip header -> BUSY_STATE | EXTRA_STATE */ #endif #define EXTRA_STATE 69 /* gzip extra block -> NAME_STATE */ #define NAME_STATE 73 /* gzip file name -> COMMENT_STATE */ #define COMMENT_STATE 91 /* gzip comment -> HCRC_STATE */ #define HCRC_STATE 103 /* gzip header CRC -> BUSY_STATE */ #define BUSY_STATE 113 /* deflate -> FINISH_STATE */ #define FINISH_STATE 666 /* stream complete */ /* Stream status */ /* Data structure describing a single value and its code string. */ typedef struct ct_data_s { union { ush freq; /* frequency count */ ush code; /* bit string */ } fc; union { ush dad; /* father node in Huffman tree */ ush len; /* length of bit string */ } dl; } FAR ct_data; #define Freq fc.freq #define Code fc.code #define Dad dl.dad #define Len dl.len typedef struct static_tree_desc_s static_tree_desc; typedef struct tree_desc_s { ct_data *dyn_tree; /* the dynamic tree */ int max_code; /* largest code with non zero frequency */ const static_tree_desc *stat_desc; /* the corresponding static tree */ } FAR tree_desc; typedef ush Pos; typedef Pos FAR Posf; typedef unsigned IPos; /* A Pos is an index in the character window. We use short instead of int to * save space in the various tables. IPos is used only for parameter passing. */ typedef struct internal_state { z_streamp strm; /* pointer back to this zlib stream */ int status; /* as the name implies */ Bytef *pending_buf; /* output still pending */ ulg pending_buf_size; /* size of pending_buf */ Bytef *pending_out; /* next pending byte to output to the stream */ ulg pending; /* nb of bytes in the pending buffer */ int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ gz_headerp gzhead; /* gzip header information to write */ ulg gzindex; /* where in extra, name, or comment */ Byte method; /* can only be DEFLATED */ int last_flush; /* value of flush param for previous deflate call */ /* used by deflate.c: */ uInt w_size; /* LZ77 window size (32K by default) */ uInt w_bits; /* log2(w_size) (8..16) */ uInt w_mask; /* w_size - 1 */ Bytef *window; /* Sliding window. Input bytes are read into the second half of the window, * and move to the first half later to keep a dictionary of at least wSize * bytes. With this organization, matches are limited to a distance of * wSize-MAX_MATCH bytes, but this ensures that IO is always * performed with a length multiple of the block size. Also, it limits * the window size to 64K, which is quite useful on MSDOS. * To do: use the user input buffer as sliding window. */ ulg window_size; /* Actual size of window: 2*wSize, except when the user input buffer * is directly used as sliding window. */ Posf *prev; /* Link to older string with same hash index. To limit the size of this * array to 64K, this link is maintained only for the last 32K strings. * An index in this array is thus a window index modulo 32K. */ Posf *head; /* Heads of the hash chains or NIL. */ uInt ins_h; /* hash index of string to be inserted */ uInt hash_size; /* number of elements in hash table */ uInt hash_bits; /* log2(hash_size) */ uInt hash_mask; /* hash_size-1 */ uInt hash_shift; /* Number of bits by which ins_h must be shifted at each input * step. It must be such that after MIN_MATCH steps, the oldest * byte no longer takes part in the hash key, that is: * hash_shift * MIN_MATCH >= hash_bits */ long block_start; /* Window position at the beginning of the current output block. Gets * negative when the window is moved backwards. */ uInt match_length; /* length of best match */ IPos prev_match; /* previous match */ int match_available; /* set if previous match exists */ uInt strstart; /* start of string to insert */ uInt match_start; /* start of matching string */ uInt lookahead; /* number of valid bytes ahead in window */ uInt prev_length; /* Length of the best match at previous step. Matches not greater than this * are discarded. This is used in the lazy match evaluation. */ uInt max_chain_length; /* To speed up deflation, hash chains are never searched beyond this * length. A higher limit improves compression ratio but degrades the * speed. */ uInt max_lazy_match; /* Attempt to find a better match only when the current match is strictly * smaller than this value. This mechanism is used only for compression * levels >= 4. */ # define max_insert_length max_lazy_match /* Insert new strings in the hash table only if the match length is not * greater than this length. This saves time but degrades compression. * max_insert_length is used only for compression levels <= 3. */ int level; /* compression level (1..9) */ int strategy; /* favor or force Huffman coding*/ uInt good_match; /* Use a faster search when the previous match is longer than this */ int nice_match; /* Stop searching when current match exceeds this */ /* used by trees.c: */ /* Didn't use ct_data typedef below to suppress compiler warning */ struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ struct tree_desc_s l_desc; /* desc. for literal tree */ struct tree_desc_s d_desc; /* desc. for distance tree */ struct tree_desc_s bl_desc; /* desc. for bit length tree */ ush bl_count[MAX_BITS+1]; /* number of codes at each bit length for an optimal tree */ int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ int heap_len; /* number of elements in the heap */ int heap_max; /* element of largest frequency */ /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. * The same heap array is used to build all trees. */ uch depth[2*L_CODES+1]; /* Depth of each subtree used as tie breaker for trees of equal frequency */ uchf *l_buf; /* buffer for literals or lengths */ uInt lit_bufsize; /* Size of match buffer for literals/lengths. There are 4 reasons for * limiting lit_bufsize to 64K: * - frequencies can be kept in 16 bit counters * - if compression is not successful for the first block, all input * data is still in the window so we can still emit a stored block even * when input comes from standard input. (This can also be done for * all blocks if lit_bufsize is not greater than 32K.) * - if compression is not successful for a file smaller than 64K, we can * even emit a stored file instead of a stored block (saving 5 bytes). * This is applicable only for zip (not gzip or zlib). * - creating new Huffman trees less frequently may not provide fast * adaptation to changes in the input data statistics. (Take for * example a binary file with poorly compressible code followed by * a highly compressible string table.) Smaller buffer sizes give * fast adaptation but have of course the overhead of transmitting * trees more frequently. * - I can't count above 4 */ uInt last_lit; /* running index in l_buf */ ushf *d_buf; /* Buffer for distances. To simplify the code, d_buf and l_buf have * the same number of elements. To use different lengths, an extra flag * array would be necessary. */ ulg opt_len; /* bit length of current block with optimal trees */ ulg static_len; /* bit length of current block with static trees */ uInt matches; /* number of string matches in current block */ uInt insert; /* bytes at end of window left to insert */ #ifdef ZLIB_DEBUG ulg compressed_len; /* total bit length of compressed file mod 2^32 */ ulg bits_sent; /* bit length of compressed data sent mod 2^32 */ #endif ush bi_buf; /* Output buffer. bits are inserted starting at the bottom (least * significant bits). */ int bi_valid; /* Number of valid bits in bi_buf. All bits above the last valid bit * are always zero. */ ulg high_water; /* High water mark offset in window for initialized bytes -- bytes above * this are set to zero in order to avoid memory check warnings when * longest match routines access bytes past the input. This is then * updated to the new high water mark. */ } FAR deflate_state; /* Output a byte on the stream. * IN assertion: there is enough room in pending_buf. */ #define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);} #define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1) /* Minimum amount of lookahead, except at the end of the input file. * See deflate.c for comments about the MIN_MATCH+1. */ #define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD) /* In order to simplify the code, particularly on 16 bit machines, match * distances are limited to MAX_DIST instead of WSIZE. */ #define WIN_INIT MAX_MATCH /* Number of bytes after end of data in window to initialize in order to avoid memory checker errors from longest match routines */ /* in trees.c */ void ZLIB_INTERNAL _tr_init OF((deflate_state *s)); int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc)); void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf, ulg stored_len, int last)); void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s)); void ZLIB_INTERNAL _tr_align OF((deflate_state *s)); void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len, int last)); #define d_code(dist) \ ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)]) /* Mapping from a distance to a distance code. dist is the distance - 1 and * must not have side effects. _dist_code[256] and _dist_code[257] are never * used. */ #ifndef ZLIB_DEBUG /* Inline versions of _tr_tally for speed: */ #if defined(GEN_TREES_H) || !defined(STDC) extern uch ZLIB_INTERNAL _length_code[]; extern uch ZLIB_INTERNAL _dist_code[]; #else extern const uch ZLIB_INTERNAL _length_code[]; extern const uch ZLIB_INTERNAL _dist_code[]; #endif # define _tr_tally_lit(s, c, flush) \ { uch cc = (c); \ s->d_buf[s->last_lit] = 0; \ s->l_buf[s->last_lit++] = cc; \ s->dyn_ltree[cc].Freq++; \ flush = (s->last_lit == s->lit_bufsize-1); \ } # define _tr_tally_dist(s, distance, length, flush) \ { uch len = (uch)(length); \ ush dist = (ush)(distance); \ s->d_buf[s->last_lit] = dist; \ s->l_buf[s->last_lit++] = len; \ dist--; \ s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \ s->dyn_dtree[d_code(dist)].Freq++; \ flush = (s->last_lit == s->lit_bufsize-1); \ } #else # define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c) # define _tr_tally_dist(s, distance, length, flush) \ flush = _tr_tally(s, distance, length) #endif #endif /* DEFLATE_H */ zlib-1.2.11.dfsg/Makefile0000644000175000017500000000014411632602263014772 0ustar brooniebroonieall: -@echo "Please use ./configure first. Thank you." distclean: make -f Makefile.in distclean zlib-1.2.11.dfsg/gzread.c0000644000175000017500000004771413032130646014765 0ustar brooniebroonie/* gzread.c -- zlib functions for reading gzip files * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler * For conditions of distribution and use, see copyright notice in zlib.h */ #include "gzguts.h" /* Local functions */ local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *)); local int gz_avail OF((gz_statep)); local int gz_look OF((gz_statep)); local int gz_decomp OF((gz_statep)); local int gz_fetch OF((gz_statep)); local int gz_skip OF((gz_statep, z_off64_t)); local z_size_t gz_read OF((gz_statep, voidp, z_size_t)); /* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from state->fd, and update state->eof, state->err, and state->msg as appropriate. This function needs to loop on read(), since read() is not guaranteed to read the number of bytes requested, depending on the type of descriptor. */ local int gz_load(state, buf, len, have) gz_statep state; unsigned char *buf; unsigned len; unsigned *have; { int ret; unsigned get, max = ((unsigned)-1 >> 2) + 1; *have = 0; do { get = len - *have; if (get > max) get = max; ret = read(state->fd, buf + *have, get); if (ret <= 0) break; *have += (unsigned)ret; } while (*have < len); if (ret < 0) { gz_error(state, Z_ERRNO, zstrerror()); return -1; } if (ret == 0) state->eof = 1; return 0; } /* Load up input buffer and set eof flag if last data loaded -- return -1 on error, 0 otherwise. Note that the eof flag is set when the end of the input file is reached, even though there may be unused data in the buffer. Once that data has been used, no more attempts will be made to read the file. If strm->avail_in != 0, then the current data is moved to the beginning of the input buffer, and then the remainder of the buffer is loaded with the available data from the input file. */ local int gz_avail(state) gz_statep state; { unsigned got; z_streamp strm = &(state->strm); if (state->err != Z_OK && state->err != Z_BUF_ERROR) return -1; if (state->eof == 0) { if (strm->avail_in) { /* copy what's there to the start */ unsigned char *p = state->in; unsigned const char *q = strm->next_in; unsigned n = strm->avail_in; do { *p++ = *q++; } while (--n); } if (gz_load(state, state->in + strm->avail_in, state->size - strm->avail_in, &got) == -1) return -1; strm->avail_in += got; strm->next_in = state->in; } return 0; } /* Look for gzip header, set up for inflate or copy. state->x.have must be 0. If this is the first time in, allocate required memory. state->how will be left unchanged if there is no more input data available, will be set to COPY if there is no gzip header and direct copying will be performed, or it will be set to GZIP for decompression. If direct copying, then leftover input data from the input buffer will be copied to the output buffer. In that case, all further file reads will be directly to either the output buffer or a user buffer. If decompressing, the inflate state will be initialized. gz_look() will return 0 on success or -1 on failure. */ local int gz_look(state) gz_statep state; { z_streamp strm = &(state->strm); /* allocate read buffers and inflate memory */ if (state->size == 0) { /* allocate buffers */ state->in = (unsigned char *)malloc(state->want); state->out = (unsigned char *)malloc(state->want << 1); if (state->in == NULL || state->out == NULL) { free(state->out); free(state->in); gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } state->size = state->want; /* allocate inflate memory */ state->strm.zalloc = Z_NULL; state->strm.zfree = Z_NULL; state->strm.opaque = Z_NULL; state->strm.avail_in = 0; state->strm.next_in = Z_NULL; if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */ free(state->out); free(state->in); state->size = 0; gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } } /* get at least the magic bytes in the input buffer */ if (strm->avail_in < 2) { if (gz_avail(state) == -1) return -1; if (strm->avail_in == 0) return 0; } /* look for gzip magic bytes -- if there, do gzip decoding (note: there is a logical dilemma here when considering the case of a partially written gzip file, to wit, if a single 31 byte is written, then we cannot tell whether this is a single-byte file, or just a partially written gzip file -- for here we assume that if a gzip file is being written, then the header will be written in a single operation, so that reading a single byte is sufficient indication that it is not a gzip file) */ if (strm->avail_in > 1 && strm->next_in[0] == 31 && strm->next_in[1] == 139) { inflateReset(strm); state->how = GZIP; state->direct = 0; return 0; } /* no gzip header -- if we were decoding gzip before, then this is trailing garbage. Ignore the trailing garbage and finish. */ if (state->direct == 0) { strm->avail_in = 0; state->eof = 1; state->x.have = 0; return 0; } /* doing raw i/o, copy any leftover input to output -- this assumes that the output buffer is larger than the input buffer, which also assures space for gzungetc() */ state->x.next = state->out; if (strm->avail_in) { memcpy(state->x.next, strm->next_in, strm->avail_in); state->x.have = strm->avail_in; strm->avail_in = 0; } state->how = COPY; state->direct = 1; return 0; } /* Decompress from input to the provided next_out and avail_out in the state. On return, state->x.have and state->x.next point to the just decompressed data. If the gzip stream completes, state->how is reset to LOOK to look for the next gzip stream or raw data, once state->x.have is depleted. Returns 0 on success, -1 on failure. */ local int gz_decomp(state) gz_statep state; { int ret = Z_OK; unsigned had; z_streamp strm = &(state->strm); /* fill output buffer up to end of deflate stream */ had = strm->avail_out; do { /* get more input for inflate() */ if (strm->avail_in == 0 && gz_avail(state) == -1) return -1; if (strm->avail_in == 0) { gz_error(state, Z_BUF_ERROR, "unexpected end of file"); break; } /* decompress and handle errors */ ret = inflate(strm, Z_NO_FLUSH); if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) { gz_error(state, Z_STREAM_ERROR, "internal error: inflate stream corrupt"); return -1; } if (ret == Z_MEM_ERROR) { gz_error(state, Z_MEM_ERROR, "out of memory"); return -1; } if (ret == Z_DATA_ERROR) { /* deflate stream invalid */ gz_error(state, Z_DATA_ERROR, strm->msg == NULL ? "compressed data error" : strm->msg); return -1; } } while (strm->avail_out && ret != Z_STREAM_END); /* update available output */ state->x.have = had - strm->avail_out; state->x.next = strm->next_out - state->x.have; /* if the gzip stream completed successfully, look for another */ if (ret == Z_STREAM_END) state->how = LOOK; /* good decompression */ return 0; } /* Fetch data and put it in the output buffer. Assumes state->x.have is 0. Data is either copied from the input file or decompressed from the input file depending on state->how. If state->how is LOOK, then a gzip header is looked for to determine whether to copy or decompress. Returns -1 on error, otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the end of the input file has been reached and all data has been processed. */ local int gz_fetch(state) gz_statep state; { z_streamp strm = &(state->strm); do { switch(state->how) { case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */ if (gz_look(state) == -1) return -1; if (state->how == LOOK) return 0; break; case COPY: /* -> COPY */ if (gz_load(state, state->out, state->size << 1, &(state->x.have)) == -1) return -1; state->x.next = state->out; return 0; case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */ strm->avail_out = state->size << 1; strm->next_out = state->out; if (gz_decomp(state) == -1) return -1; } } while (state->x.have == 0 && (!state->eof || strm->avail_in)); return 0; } /* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */ local int gz_skip(state, len) gz_statep state; z_off64_t len; { unsigned n; /* skip over len bytes or reach end-of-file, whichever comes first */ while (len) /* skip over whatever is in output buffer */ if (state->x.have) { n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ? (unsigned)len : state->x.have; state->x.have -= n; state->x.next += n; state->x.pos += n; len -= n; } /* output buffer empty -- return if we're at the end of the input */ else if (state->eof && state->strm.avail_in == 0) break; /* need more data to skip -- load up output buffer */ else { /* get more output, looking for header if required */ if (gz_fetch(state) == -1) return -1; } return 0; } /* Read len bytes into buf from file, or less than len up to the end of the input. Return the number of bytes read. If zero is returned, either the end of file was reached, or there was an error. state->err must be consulted in that case to determine which. */ local z_size_t gz_read(state, buf, len) gz_statep state; voidp buf; z_size_t len; { z_size_t got; unsigned n; /* if len is zero, avoid unnecessary operations */ if (len == 0) return 0; /* process a skip request */ if (state->seek) { state->seek = 0; if (gz_skip(state, state->skip) == -1) return 0; } /* get len bytes to buf, or less than len if at the end */ got = 0; do { /* set n to the maximum amount of len that fits in an unsigned int */ n = -1; if (n > len) n = len; /* first just try copying data from the output buffer */ if (state->x.have) { if (state->x.have < n) n = state->x.have; memcpy(buf, state->x.next, n); state->x.next += n; state->x.have -= n; } /* output buffer empty -- return if we're at the end of the input */ else if (state->eof && state->strm.avail_in == 0) { state->past = 1; /* tried to read past end */ break; } /* need output data -- for small len or new stream load up our output buffer */ else if (state->how == LOOK || n < (state->size << 1)) { /* get more output, looking for header if required */ if (gz_fetch(state) == -1) return 0; continue; /* no progress yet -- go back to copy above */ /* the copy above assures that we will leave with space in the output buffer, allowing at least one gzungetc() to succeed */ } /* large len -- read directly into user buffer */ else if (state->how == COPY) { /* read directly */ if (gz_load(state, (unsigned char *)buf, n, &n) == -1) return 0; } /* large len -- decompress directly into user buffer */ else { /* state->how == GZIP */ state->strm.avail_out = n; state->strm.next_out = (unsigned char *)buf; if (gz_decomp(state) == -1) return 0; n = state->x.have; state->x.have = 0; } /* update progress */ len -= n; buf = (char *)buf + n; got += n; state->x.pos += n; } while (len); /* return number of bytes read into user buffer */ return got; } /* -- see zlib.h -- */ int ZEXPORT gzread(file, buf, len) gzFile file; voidp buf; unsigned len; { gz_statep state; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; /* check that we're reading and that there's no (serious) error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return -1; /* since an int is returned, make sure len fits in one, otherwise return with an error (this avoids a flaw in the interface) */ if ((int)len < 0) { gz_error(state, Z_STREAM_ERROR, "request does not fit in an int"); return -1; } /* read len or fewer bytes to buf */ len = gz_read(state, buf, len); /* check for an error */ if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR) return -1; /* return the number of bytes read (this is assured to fit in an int) */ return (int)len; } /* -- see zlib.h -- */ z_size_t ZEXPORT gzfread(buf, size, nitems, file) voidp buf; z_size_t size; z_size_t nitems; gzFile file; { z_size_t len; gz_statep state; /* get internal structure */ if (file == NULL) return 0; state = (gz_statep)file; /* check that we're reading and that there's no (serious) error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return 0; /* compute bytes to read -- error on overflow */ len = nitems * size; if (size && len / size != nitems) { gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t"); return 0; } /* read len or fewer bytes to buf, return the number of full items read */ return len ? gz_read(state, buf, len) / size : 0; } /* -- see zlib.h -- */ #ifdef Z_PREFIX_SET # undef z_gzgetc #else # undef gzgetc #endif int ZEXPORT gzgetc(file) gzFile file; { int ret; unsigned char buf[1]; gz_statep state; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; /* check that we're reading and that there's no (serious) error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return -1; /* try output buffer (no need to check for skip request) */ if (state->x.have) { state->x.have--; state->x.pos++; return *(state->x.next)++; } /* nothing there -- try gz_read() */ ret = gz_read(state, buf, 1); return ret < 1 ? -1 : buf[0]; } int ZEXPORT gzgetc_(file) gzFile file; { return gzgetc(file); } /* -- see zlib.h -- */ int ZEXPORT gzungetc(c, file) int c; gzFile file; { gz_statep state; /* get internal structure */ if (file == NULL) return -1; state = (gz_statep)file; /* check that we're reading and that there's no (serious) error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return -1; /* process a skip request */ if (state->seek) { state->seek = 0; if (gz_skip(state, state->skip) == -1) return -1; } /* can't push EOF */ if (c < 0) return -1; /* if output buffer empty, put byte at end (allows more pushing) */ if (state->x.have == 0) { state->x.have = 1; state->x.next = state->out + (state->size << 1) - 1; state->x.next[0] = (unsigned char)c; state->x.pos--; state->past = 0; return c; } /* if no room, give up (must have already done a gzungetc()) */ if (state->x.have == (state->size << 1)) { gz_error(state, Z_DATA_ERROR, "out of room to push characters"); return -1; } /* slide output data if needed and insert byte before existing data */ if (state->x.next == state->out) { unsigned char *src = state->out + state->x.have; unsigned char *dest = state->out + (state->size << 1); while (src > state->out) *--dest = *--src; state->x.next = dest; } state->x.have++; state->x.next--; state->x.next[0] = (unsigned char)c; state->x.pos--; state->past = 0; return c; } /* -- see zlib.h -- */ char * ZEXPORT gzgets(file, buf, len) gzFile file; char *buf; int len; { unsigned left, n; char *str; unsigned char *eol; gz_statep state; /* check parameters and get internal structure */ if (file == NULL || buf == NULL || len < 1) return NULL; state = (gz_statep)file; /* check that we're reading and that there's no (serious) error */ if (state->mode != GZ_READ || (state->err != Z_OK && state->err != Z_BUF_ERROR)) return NULL; /* process a skip request */ if (state->seek) { state->seek = 0; if (gz_skip(state, state->skip) == -1) return NULL; } /* copy output bytes up to new line or len - 1, whichever comes first -- append a terminating zero to the string (we don't check for a zero in the contents, let the user worry about that) */ str = buf; left = (unsigned)len - 1; if (left) do { /* assure that something is in the output buffer */ if (state->x.have == 0 && gz_fetch(state) == -1) return NULL; /* error */ if (state->x.have == 0) { /* end of file */ state->past = 1; /* read past end */ break; /* return what we have */ } /* look for end-of-line in current output buffer */ n = state->x.have > left ? left : state->x.have; eol = (unsigned char *)memchr(state->x.next, '\n', n); if (eol != NULL) n = (unsigned)(eol - state->x.next) + 1; /* copy through end-of-line, or remainder if not found */ memcpy(buf, state->x.next, n); state->x.have -= n; state->x.next += n; state->x.pos += n; left -= n; buf += n; } while (left && eol == NULL); /* return terminated string, or if nothing, end of file */ if (buf == str) return NULL; buf[0] = 0; return str; } /* -- see zlib.h -- */ int ZEXPORT gzdirect(file) gzFile file; { gz_statep state; /* get internal structure */ if (file == NULL) return 0; state = (gz_statep)file; /* if the state is not known, but we can find out, then do so (this is mainly for right after a gzopen() or gzdopen()) */ if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0) (void)gz_look(state); /* return 1 if transparent, 0 if processing a gzip stream */ return state->direct; } /* -- see zlib.h -- */ int ZEXPORT gzclose_r(file) gzFile file; { int ret, err; gz_statep state; /* get internal structure */ if (file == NULL) return Z_STREAM_ERROR; state = (gz_statep)file; /* check that we're reading */ if (state->mode != GZ_READ) return Z_STREAM_ERROR; /* free memory and close file */ if (state->size) { inflateEnd(&(state->strm)); free(state->out); free(state->in); } err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK; gz_error(state, Z_OK, NULL); free(state->path); ret = close(state->fd); free(state); return ret ? Z_ERRNO : err; } zlib-1.2.11.dfsg/os400/0000755000175000017500000000000013162250104014171 5ustar brooniebrooniezlib-1.2.11.dfsg/os400/README4000000644000175000017500000000351713036730604015313 0ustar brooniebroonie ZLIB version 1.2.11 for OS/400 installation instructions 1) Download and unpack the zlib tarball to some IFS directory. (i.e.: /path/to/the/zlib/ifs/source/directory) If the installed IFS command suppors gzip format, this is straightforward, else you have to unpack first to some directory on a system supporting it, then move the whole directory to the IFS via the network (via SMB or FTP). 2) Edit the configuration parameters in the compilation script. EDTF STMF('/path/to/the/zlib/ifs/source/directory/os400/make.sh') Tune the parameters according to your needs if not matching the defaults. Save the file and exit after edition. 3) Enter qshell, then work in the zlib OS/400 specific directory. QSH cd /path/to/the/zlib/ifs/source/directory/os400 4) Compile and install sh make.sh The script will: - create the libraries, objects and IFS directories for the zlib environment, - compile all modules, - create a service program, - create a static and a dynamic binding directory, - install header files for C/C++ and for ILE/RPG, both for compilation in DB2 and IFS environments. That's all. Notes: For OS/400 ILE RPG programmers, a /copy member defining the ZLIB API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC). In the ILE environment, the same definitions are available from file zlib.inc located in the same IFS include directory as the C/C++ header files. Please read comments in this member for more information. Remember that most foreign textual data are ASCII coded: this implementation does not handle conversion from/to ASCII, so text data code conversions must be done explicitely. Mainly for the reason above, always open zipped files in binary mode. zlib-1.2.11.dfsg/os400/zlib.inc0000644000175000017500000010003313036730604015631 0ustar brooniebroonie * ZLIB.INC - Interface to the general purpose compression library * * ILE RPG400 version by Patrick Monnerat, DATASPHERE. * Version 1.2.11 * * * WARNING: * Procedures inflateInit(), inflateInit2(), deflateInit(), * deflateInit2() and inflateBackInit() need to be called with * two additional arguments: * the package version string and the stream control structure. * size. This is needed because RPG lacks some macro feature. * Call these procedures as: * inflateInit(...: ZLIB_VERSION: %size(z_stream)) * /if not defined(ZLIB_H_) /define ZLIB_H_ * ************************************************************************** * Constants ************************************************************************** * * Versioning information. * D ZLIB_VERSION C '1.2.11' D ZLIB_VERNUM C X'12a0' D ZLIB_VER_MAJOR C 1 D ZLIB_VER_MINOR C 2 D ZLIB_VER_REVISION... D C 11 D ZLIB_VER_SUBREVISION... D C 0 * * Other equates. * D Z_NO_FLUSH C 0 D Z_PARTIAL_FLUSH... D C 1 D Z_SYNC_FLUSH C 2 D Z_FULL_FLUSH C 3 D Z_FINISH C 4 D Z_BLOCK C 5 D Z_TREES C 6 * D Z_OK C 0 D Z_STREAM_END C 1 D Z_NEED_DICT C 2 D Z_ERRNO C -1 D Z_STREAM_ERROR C -2 D Z_DATA_ERROR C -3 D Z_MEM_ERROR C -4 D Z_BUF_ERROR C -5 D Z_VERSION_ERROR C -6 * D Z_NO_COMPRESSION... D C 0 D Z_BEST_SPEED C 1 D Z_BEST_COMPRESSION... D C 9 D Z_DEFAULT_COMPRESSION... D C -1 * D Z_FILTERED C 1 D Z_HUFFMAN_ONLY C 2 D Z_RLE C 3 D Z_DEFAULT_STRATEGY... D C 0 * D Z_BINARY C 0 D Z_ASCII C 1 D Z_UNKNOWN C 2 * D Z_DEFLATED C 8 * D Z_NULL C 0 * ************************************************************************** * Types ************************************************************************** * D z_streamp S * Stream struct ptr D gzFile S * File pointer D gz_headerp S * D z_off_t S 10i 0 Stream offsets D z_off64_t S 20i 0 Stream offsets * ************************************************************************** * Structures ************************************************************************** * * The GZIP encode/decode stream support structure. * D z_stream DS align based(z_streamp) D zs_next_in * Next input byte D zs_avail_in 10U 0 Byte cnt at next_in D zs_total_in 10U 0 Total bytes read D zs_next_out * Output buffer ptr D zs_avail_out 10U 0 Room left @ next_out D zs_total_out 10U 0 Total bytes written D zs_msg * Last errmsg or null D zs_state * Internal state D zs_zalloc * procptr Int. state allocator D zs_free * procptr Int. state dealloc. D zs_opaque * Private alloc. data D zs_data_type 10i 0 ASC/BIN best guess D zs_adler 10u 0 Uncompr. adler32 val D 10U 0 Reserved D 10U 0 Ptr. alignment * ************************************************************************** * Utility function prototypes ************************************************************************** * D compress PR 10I 0 extproc('compress') D dest 65535 options(*varsize) Destination buffer D destLen 10U 0 Destination length D source 65535 const options(*varsize) Source buffer D sourceLen 10u 0 value Source length * D compress2 PR 10I 0 extproc('compress2') D dest 65535 options(*varsize) Destination buffer D destLen 10U 0 Destination length D source 65535 const options(*varsize) Source buffer D sourceLen 10U 0 value Source length D level 10I 0 value Compression level * D compressBound PR 10U 0 extproc('compressBound') D sourceLen 10U 0 value * D uncompress PR 10I 0 extproc('uncompress') D dest 65535 options(*varsize) Destination buffer D destLen 10U 0 Destination length D source 65535 const options(*varsize) Source buffer D sourceLen 10U 0 value Source length * D uncompress2 PR 10I 0 extproc('uncompress2') D dest 65535 options(*varsize) Destination buffer D destLen 10U 0 Destination length D source 65535 const options(*varsize) Source buffer D sourceLen 10U 0 Source length * /if not defined(LARGE_FILES) D gzopen PR extproc('gzopen') D like(gzFile) D path * value options(*string) File pathname D mode * value options(*string) Open mode /else D gzopen PR extproc('gzopen64') D like(gzFile) D path * value options(*string) File pathname D mode * value options(*string) Open mode * D gzopen64 PR extproc('gzopen64') D like(gzFile) D path * value options(*string) File pathname D mode * value options(*string) Open mode /endif * D gzdopen PR extproc('gzdopen') D like(gzFile) D fd 10I 0 value File descriptor D mode * value options(*string) Open mode * D gzbuffer PR 10I 0 extproc('gzbuffer') D file value like(gzFile) File pointer D size 10U 0 value * D gzsetparams PR 10I 0 extproc('gzsetparams') D file value like(gzFile) File pointer D level 10I 0 value D strategy 10I 0 value * D gzread PR 10I 0 extproc('gzread') D file value like(gzFile) File pointer D buf 65535 options(*varsize) Buffer D len 10u 0 value Buffer length * D gzfread PR 20I 0 extproc('gzfread') D buf 65535 options(*varsize) Buffer D size 20u 0 value Buffer length D nitems 20u 0 value Buffer length D file value like(gzFile) File pointer * D gzwrite PR 10I 0 extproc('gzwrite') D file value like(gzFile) File pointer D buf 65535 const options(*varsize) Buffer D len 10u 0 value Buffer length * D gzfwrite PR 20I 0 extproc('gzfwrite') D buf 65535 options(*varsize) Buffer D size 20u 0 value Buffer length D nitems 20u 0 value Buffer length D file value like(gzFile) File pointer * D gzputs PR 10I 0 extproc('gzputs') D file value like(gzFile) File pointer D s * value options(*string) String to output * D gzgets PR * extproc('gzgets') D file value like(gzFile) File pointer D buf 65535 options(*varsize) Read buffer D len 10i 0 value Buffer length * D gzputc PR 10i 0 extproc('gzputc') D file value like(gzFile) File pointer D c 10I 0 value Character to write * D gzgetc PR 10i 0 extproc('gzgetc') D file value like(gzFile) File pointer * D gzgetc_ PR 10i 0 extproc('gzgetc_') D file value like(gzFile) File pointer * D gzungetc PR 10i 0 extproc('gzungetc') D c 10I 0 value Character to push D file value like(gzFile) File pointer * D gzflush PR 10i 0 extproc('gzflush') D file value like(gzFile) File pointer D flush 10I 0 value Type of flush * /if not defined(LARGE_FILES) D gzseek PR extproc('gzseek') D like(z_off_t) D file value like(gzFile) File pointer D offset value like(z_off_t) Offset D whence 10i 0 value Origin /else D gzseek PR extproc('gzseek64') D like(z_off_t) D file value like(gzFile) File pointer D offset value like(z_off_t) Offset D whence 10i 0 value Origin * D gzseek64 PR extproc('gzseek64') D like(z_off64_t) D file value like(gzFile) File pointer D offset value like(z_off64_t) Offset D whence 10i 0 value Origin /endif * D gzrewind PR 10i 0 extproc('gzrewind') D file value like(gzFile) File pointer * /if not defined(LARGE_FILES) D gztell PR extproc('gztell') D like(z_off_t) D file value like(gzFile) File pointer /else D gztell PR extproc('gztell64') D like(z_off_t) D file value like(gzFile) File pointer * D gztell64 PR extproc('gztell64') D like(z_off64_t) D file value like(gzFile) File pointer /endif * /if not defined(LARGE_FILES) D gzoffset PR extproc('gzoffset') D like(z_off_t) D file value like(gzFile) File pointer /else D gzoffset PR extproc('gzoffset64') D like(z_off_t) D file value like(gzFile) File pointer * D gzoffset64 PR extproc('gzoffset64') D like(z_off64_t) D file value like(gzFile) File pointer /endif * D gzeof PR 10i 0 extproc('gzeof') D file value like(gzFile) File pointer * D gzdirect PR 10i 0 extproc('gzdirect') D file value like(gzFile) File pointer * D gzclose_r PR 10i 0 extproc('gzclose_r') D file value like(gzFile) File pointer * D gzclose_w PR 10i 0 extproc('gzclose_w') D file value like(gzFile) File pointer * D gzclose PR 10i 0 extproc('gzclose') D file value like(gzFile) File pointer * D gzerror PR * extproc('gzerror') Error string D file value like(gzFile) File pointer D errnum 10I 0 Error code * D gzclearerr PR extproc('gzclearerr') D file value like(gzFile) File pointer * ************************************************************************** * Basic function prototypes ************************************************************************** * D zlibVersion PR * extproc('zlibVersion') Version string * D deflateInit PR 10I 0 extproc('deflateInit_') Init. compression D strm like(z_stream) Compression stream D level 10I 0 value Compression level D version * value options(*string) Version string D stream_size 10i 0 value Stream struct. size * D deflate PR 10I 0 extproc('deflate') Compress data D strm like(z_stream) Compression stream D flush 10I 0 value Flush type required * D deflateEnd PR 10I 0 extproc('deflateEnd') Termin. compression D strm like(z_stream) Compression stream * D inflateInit PR 10I 0 extproc('inflateInit_') Init. expansion D strm like(z_stream) Expansion stream D version * value options(*string) Version string D stream_size 10i 0 value Stream struct. size * D inflate PR 10I 0 extproc('inflate') Expand data D strm like(z_stream) Expansion stream D flush 10I 0 value Flush type required * D inflateEnd PR 10I 0 extproc('inflateEnd') Termin. expansion D strm like(z_stream) Expansion stream * ************************************************************************** * Advanced function prototypes ************************************************************************** * D deflateInit2 PR 10I 0 extproc('deflateInit2_') Init. compression D strm like(z_stream) Compression stream D level 10I 0 value Compression level D method 10I 0 value Compression method D windowBits 10I 0 value log2(window size) D memLevel 10I 0 value Mem/cmpress tradeoff D strategy 10I 0 value Compression strategy D version * value options(*string) Version string D stream_size 10i 0 value Stream struct. size * D deflateSetDictionary... D PR 10I 0 extproc('deflateSetDictionary') Init. dictionary D strm like(z_stream) Compression stream D dictionary 65535 const options(*varsize) Dictionary bytes D dictLength 10U 0 value Dictionary length * D deflateCopy PR 10I 0 extproc('deflateCopy') Compress strm 2 strm D dest like(z_stream) Destination stream D source like(z_stream) Source stream * D deflateReset PR 10I 0 extproc('deflateReset') End and init. stream D strm like(z_stream) Compression stream * D deflateParams PR 10I 0 extproc('deflateParams') Change level & strat D strm like(z_stream) Compression stream D level 10I 0 value Compression level D strategy 10I 0 value Compression strategy * D deflateTune PR 10I 0 extproc('deflateTune') D strm like(z_stream) Compression stream D good 10I 0 value D lazy 10I 0 value D nice 10I 0 value D chain 10I 0 value * D deflateBound PR 10U 0 extproc('deflateBound') Change level & strat D strm like(z_stream) Compression stream D sourcelen 10U 0 value Compression level * D deflatePending PR 10I 0 extproc('deflatePending') Change level & strat D strm like(z_stream) Compression stream D pending 10U 0 Pending bytes D bits 10I 0 Pending bits * D deflatePrime PR 10I 0 extproc('deflatePrime') Change level & strat D strm like(z_stream) Compression stream D bits 10I 0 value # of bits to insert D value 10I 0 value Bits to insert * D inflateInit2 PR 10I 0 extproc('inflateInit2_') Init. expansion D strm like(z_stream) Expansion stream D windowBits 10I 0 value log2(window size) D version * value options(*string) Version string D stream_size 10i 0 value Stream struct. size * D inflateSetDictionary... D PR 10I 0 extproc('inflateSetDictionary') Init. dictionary D strm like(z_stream) Expansion stream D dictionary 65535 const options(*varsize) Dictionary bytes D dictLength 10U 0 value Dictionary length * D inflateGetDictionary... D PR 10I 0 extproc('inflateGetDictionary') Get dictionary D strm like(z_stream) Expansion stream D dictionary 65535 options(*varsize) Dictionary bytes D dictLength 10U 0 Dictionary length * D deflateGetDictionary... D PR 10I 0 extproc('deflateGetDictionary') Get dictionary D strm like(z_stream) Expansion stream D dictionary 65535 options(*varsize) Dictionary bytes D dictLength 10U 0 Dictionary length * D inflateSync PR 10I 0 extproc('inflateSync') Sync. expansion D strm like(z_stream) Expansion stream * D inflateCopy PR 10I 0 extproc('inflateCopy') D dest like(z_stream) Destination stream D source like(z_stream) Source stream * D inflateReset PR 10I 0 extproc('inflateReset') End and init. stream D strm like(z_stream) Expansion stream * D inflateReset2 PR 10I 0 extproc('inflateReset2') End and init. stream D strm like(z_stream) Expansion stream D windowBits 10I 0 value Log2(buffer size) * D inflatePrime PR 10I 0 extproc('inflatePrime') Insert bits D strm like(z_stream) Expansion stream D bits 10I 0 value Bit count D value 10I 0 value Bits to insert * D inflateMark PR 10I 0 extproc('inflateMark') Get inflate info D strm like(z_stream) Expansion stream * D inflateCodesUsed... PR 20U 0 extproc('inflateCodesUsed') D strm like(z_stream) Expansion stream * D inflateValidate... PR 20U 0 extproc('inflateValidate') D strm like(z_stream) Expansion stream D check 10I 0 value * D inflateGetHeader... PR 10U 0 extproc('inflateGetHeader') D strm like(z_stream) Expansion stream D head like(gz_headerp) * D deflateSetHeader... PR 10U 0 extproc('deflateSetHeader') D strm like(z_stream) Expansion stream D head like(gz_headerp) * D inflateBackInit... D PR 10I 0 extproc('inflateBackInit_') D strm like(z_stream) Expansion stream D windowBits 10I 0 value Log2(buffer size) D window 65535 options(*varsize) Buffer D version * value options(*string) Version string D stream_size 10i 0 value Stream struct. size * D inflateBack PR 10I 0 extproc('inflateBack') D strm like(z_stream) Expansion stream D in * value procptr Input function D in_desc * value Input descriptor D out * value procptr Output function D out_desc * value Output descriptor * D inflateBackEnd PR 10I 0 extproc('inflateBackEnd') D strm like(z_stream) Expansion stream * D zlibCompileFlags... D PR 10U 0 extproc('zlibCompileFlags') * ************************************************************************** * Checksum function prototypes ************************************************************************** * D adler32 PR 10U 0 extproc('adler32') New checksum D adler 10U 0 value Old checksum D buf 65535 const options(*varsize) Bytes to accumulate D len 10U 0 value Buffer length * D adler32_combine... PR 10U 0 extproc('adler32_combine') New checksum D adler1 10U 0 value Old checksum D adler2 10U 0 value Old checksum D len2 20U 0 value Buffer length * D adler32_z PR 10U 0 extproc('adler32_z') New checksum D adler 10U 0 value Old checksum D buf 65535 const options(*varsize) Bytes to accumulate D len 20U 0 value Buffer length * D crc32 PR 10U 0 extproc('crc32') New checksum D crc 10U 0 value Old checksum D buf 65535 const options(*varsize) Bytes to accumulate D len 10U 0 value Buffer length * D crc32_combine... PR 10U 0 extproc('crc32_combine') New checksum D crc1 10U 0 value Old checksum D crc2 10U 0 value Old checksum D len2 20U 0 value Buffer length * D crc32_z PR 10U 0 extproc('crc32_z') New checksum D crc 10U 0 value Old checksum D buf 65535 const options(*varsize) Bytes to accumulate D len 20U 0 value Buffer length * ************************************************************************** * Miscellaneous function prototypes ************************************************************************** * D zError PR * extproc('zError') Error string D err 10I 0 value Error code * D inflateSyncPoint... D PR 10I 0 extproc('inflateSyncPoint') D strm like(z_stream) Expansion stream * D get_crc_table PR * extproc('get_crc_table') Ptr to ulongs * D inflateUndermine... D PR 10I 0 extproc('inflateUndermine') D strm like(z_stream) Expansion stream D arg 10I 0 value Error code * D inflateResetKeep... D PR 10I 0 extproc('inflateResetKeep') End and init. stream D strm like(z_stream) Expansion stream * D deflateResetKeep... D PR 10I 0 extproc('deflateResetKeep') End and init. stream D strm like(z_stream) Expansion stream * /endif zlib-1.2.11.dfsg/os400/make.sh0000644000175000017500000002474713036726074015476 0ustar brooniebroonie#!/bin/sh # # ZLIB compilation script for the OS/400. # # # This is a shell script since make is not a standard component of OS/400. ################################################################################ # # Tunable configuration parameters. # ################################################################################ TARGETLIB='ZLIB' # Target OS/400 program library STATBNDDIR='ZLIB_A' # Static binding directory. DYNBNDDIR='ZLIB' # Dynamic binding directory. SRVPGM="ZLIB" # Service program. IFSDIR='/zlib' # IFS support base directory. TGTCCSID='500' # Target CCSID of objects DEBUG='*NONE' # Debug level OPTIMIZE='40' # Optimisation level OUTPUT='*NONE' # Compilation output option. TGTRLS='V6R1M0' # Target OS release export TARGETLIB STATBNDDIR DYNBNDDIR SRVPGM IFSDIR export TGTCCSID DEBUG OPTIMIZE OUTPUT TGTRLS ################################################################################ # # OS/400 specific definitions. # ################################################################################ LIBIFSNAME="/QSYS.LIB/${TARGETLIB}.LIB" ################################################################################ # # Procedures. # ################################################################################ # action_needed dest [src] # # dest is an object to build # if specified, src is an object on which dest depends. # # exit 0 (succeeds) if some action has to be taken, else 1. action_needed() { [ ! -e "${1}" ] && return 0 [ "${2}" ] || return 1 [ "${1}" -ot "${2}" ] && return 0 return 1 } # make_module module_name source_name [additional_definitions] # # Compile source name into module if needed. # As side effect, append the module name to variable MODULES. # Set LINK to "YES" if the module has been compiled. make_module() { MODULES="${MODULES} ${1}" MODIFSNAME="${LIBIFSNAME}/${1}.MODULE" CSRC="`basename \"${2}\"`" if action_needed "${MODIFSNAME}" "${2}" then : elif [ ! "`sed -e \"//,/<\\\\/source>/!d\" \ -e '/ tmphdrfile # Need to translate to target CCSID. CMD="CPY OBJ('`pwd`/tmphdrfile') TOOBJ('${DEST}')" CMD="${CMD} TOCCSID(${TGTCCSID}) DTAFMT(*TEXT) REPLACE(*YES)" system "${CMD}" # touch -r "${HFILE}" "${DEST}" rm -f tmphdrfile fi IFSFILE="${IFSDIR}/include/`basename \"${HFILE}\"`" if action_needed "${IFSFILE}" "${DEST}" then rm -f "${IFSFILE}" ln -s "${DEST}" "${IFSFILE}" fi done # Install the ILE/RPG header file. HFILE="${SCRIPTDIR}/zlib.inc" DEST="${SRCPF}/ZLIB.INC.MBR" if action_needed "${DEST}" "${HFILE}" then CMD="CPY OBJ('${HFILE}') TOOBJ('${DEST}')" CMD="${CMD} TOCCSID(${TGTCCSID}) DTAFMT(*TEXT) REPLACE(*YES)" system "${CMD}" # touch -r "${HFILE}" "${DEST}" fi IFSFILE="${IFSDIR}/include/`basename \"${HFILE}\"`" if action_needed "${IFSFILE}" "${DEST}" then rm -f "${IFSFILE}" ln -s "${DEST}" "${IFSFILE}" fi # Create and compile the identification source file. echo '#pragma comment(user, "ZLIB version '"${VERSION}"'")' > os400.c echo '#pragma comment(user, __DATE__)' >> os400.c echo '#pragma comment(user, __TIME__)' >> os400.c echo '#pragma comment(copyright, "Copyright (C) 1995-2017 Jean-Loup Gailly, Mark Adler. OS/400 version by P. Monnerat.")' >> os400.c make_module OS400 os400.c LINK= # No need to rebuild service program yet. MODULES= # Get source list. CSOURCES=`sed -e '/= 199901L # ifndef STDC99 # define STDC99 # endif # endif #endif #if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) # define STDC #endif #if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) # define STDC #endif #if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) # define STDC #endif #if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) # define STDC #endif #if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ # define STDC #endif #ifndef STDC # ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ # define const /* note: need a more gentle solution here */ # endif #endif #if defined(ZLIB_CONST) && !defined(z_const) # define z_const const #else # define z_const #endif #ifdef Z_SOLO typedef unsigned long z_size_t; #else # define z_longlong long long # if defined(NO_SIZE_T) typedef unsigned NO_SIZE_T z_size_t; # elif defined(STDC) # include typedef size_t z_size_t; # else typedef unsigned long z_size_t; # endif # undef z_longlong #endif /* Maximum value for memLevel in deflateInit2 */ #ifndef MAX_MEM_LEVEL # ifdef MAXSEG_64K # define MAX_MEM_LEVEL 8 # else # define MAX_MEM_LEVEL 9 # endif #endif /* Maximum value for windowBits in deflateInit2 and inflateInit2. * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files * created by gzip. (Files created by minigzip can still be extracted by * gzip.) */ #ifndef MAX_WBITS # define MAX_WBITS 15 /* 32K LZ77 window */ #endif /* The memory requirements for deflate are (in bytes): (1 << (windowBits+2)) + (1 << (memLevel+9)) that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) plus a few kilobytes for small objects. For example, if you want to reduce the default memory requirements from 256K to 128K, compile with make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" Of course this will generally degrade compression (there's no free lunch). The memory requirements for inflate are (in bytes) 1 << windowBits that is, 32K for windowBits=15 (default value) plus about 7 kilobytes for small objects. */ /* Type declarations */ #ifndef OF /* function prototypes */ # ifdef STDC # define OF(args) args # else # define OF(args) () # endif #endif #ifndef Z_ARG /* function prototypes for stdarg */ # if defined(STDC) || defined(Z_HAVE_STDARG_H) # define Z_ARG(args) args # else # define Z_ARG(args) () # endif #endif /* The following definitions for FAR are needed only for MSDOS mixed * model programming (small or medium model with some far allocations). * This was tested only with MSC; for other MSDOS compilers you may have * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, * just define FAR to be empty. */ #ifdef SYS16BIT # if defined(M_I86SM) || defined(M_I86MM) /* MSC small or medium model */ # define SMALL_MEDIUM # ifdef _MSC_VER # define FAR _far # else # define FAR far # endif # endif # if (defined(__SMALL__) || defined(__MEDIUM__)) /* Turbo C small or medium model */ # define SMALL_MEDIUM # ifdef __BORLANDC__ # define FAR _far # else # define FAR far # endif # endif #endif #if defined(WINDOWS) || defined(WIN32) /* If building or using zlib as a DLL, define ZLIB_DLL. * This is not mandatory, but it offers a little performance increase. */ # ifdef ZLIB_DLL # if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) # ifdef ZLIB_INTERNAL # define ZEXTERN extern __declspec(dllexport) # else # define ZEXTERN extern __declspec(dllimport) # endif # endif # endif /* ZLIB_DLL */ /* If building or using zlib with the WINAPI/WINAPIV calling convention, * define ZLIB_WINAPI. * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. */ # ifdef ZLIB_WINAPI # ifdef FAR # undef FAR # endif # include /* No need for _export, use ZLIB.DEF instead. */ /* For complete Windows compatibility, use WINAPI, not __stdcall. */ # define ZEXPORT WINAPI # ifdef WIN32 # define ZEXPORTVA WINAPIV # else # define ZEXPORTVA FAR CDECL # endif # endif #endif #if defined (__BEOS__) # ifdef ZLIB_DLL # ifdef ZLIB_INTERNAL # define ZEXPORT __declspec(dllexport) # define ZEXPORTVA __declspec(dllexport) # else # define ZEXPORT __declspec(dllimport) # define ZEXPORTVA __declspec(dllimport) # endif # endif #endif #ifndef ZEXTERN # define ZEXTERN extern #endif #ifndef ZEXPORT # define ZEXPORT #endif #ifndef ZEXPORTVA # define ZEXPORTVA #endif #ifndef FAR # define FAR #endif #if !defined(__MACTYPES__) typedef unsigned char Byte; /* 8 bits */ #endif typedef unsigned int uInt; /* 16 bits or more */ typedef unsigned long uLong; /* 32 bits or more */ #ifdef SMALL_MEDIUM /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ # define Bytef Byte FAR #else typedef Byte FAR Bytef; #endif typedef char FAR charf; typedef int FAR intf; typedef uInt FAR uIntf; typedef uLong FAR uLongf; #ifdef STDC typedef void const *voidpc; typedef void FAR *voidpf; typedef void *voidp; #else typedef Byte const *voidpc; typedef Byte FAR *voidpf; typedef Byte *voidp; #endif #if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC) # include # if (UINT_MAX == 0xffffffffUL) # define Z_U4 unsigned # elif (ULONG_MAX == 0xffffffffUL) # define Z_U4 unsigned long # elif (USHRT_MAX == 0xffffffffUL) # define Z_U4 unsigned short # endif #endif #ifdef Z_U4 typedef Z_U4 z_crc_t; #else typedef unsigned long z_crc_t; #endif #ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_UNISTD_H #endif #ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ # define Z_HAVE_STDARG_H #endif #ifdef STDC # ifndef Z_SOLO # include /* for off_t */ # endif #endif #if defined(STDC) || defined(Z_HAVE_STDARG_H) # ifndef Z_SOLO # include /* for va_list */ # endif #endif #ifdef _WIN32 # ifndef Z_SOLO # include /* for wchar_t */ # endif #endif /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even * though the former does not conform to the LFS document), but considering * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as * equivalently requesting no 64-bit operations */ #if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1 # undef _LARGEFILE64_SOURCE #endif #if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H) # define Z_HAVE_UNISTD_H #endif #ifndef Z_SOLO # if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE) # include /* for SEEK_*, off_t, and _LFS64_LARGEFILE */ # ifdef VMS # include /* for off_t */ # endif # ifndef z_off_t # define z_off_t off_t # endif # endif #endif #if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0 # define Z_LFS64 #endif #if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64) # define Z_LARGE64 #endif #if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64) # define Z_WANT64 #endif #if !defined(SEEK_SET) && !defined(Z_SOLO) # define SEEK_SET 0 /* Seek from beginning of file. */ # define SEEK_CUR 1 /* Seek from current position. */ # define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ #endif #ifndef z_off_t # define z_off_t long #endif #if !defined(_WIN32) && defined(Z_LARGE64) # define z_off64_t off64_t #else # if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO) # define z_off64_t __int64 # else # define z_off64_t z_off_t # endif #endif /* MVS linker does not support external names larger than 8 bytes */ #if defined(__MVS__) #pragma map(deflateInit_,"DEIN") #pragma map(deflateInit2_,"DEIN2") #pragma map(deflateEnd,"DEEND") #pragma map(deflateBound,"DEBND") #pragma map(inflateInit_,"ININ") #pragma map(inflateInit2_,"ININ2") #pragma map(inflateEnd,"INEND") #pragma map(inflateSync,"INSY") #pragma map(inflateSetDictionary,"INSEDI") #pragma map(compressBound,"CMBND") #pragma map(inflate_table,"INTABL") #pragma map(inflate_fast,"INFA") #pragma map(inflate_copyright,"INCOPY") #endif #endif /* ZCONF_H */ zlib-1.2.11.dfsg/watcom/0000755000175000017500000000000013162250104014616 5ustar brooniebrooniezlib-1.2.11.dfsg/watcom/watcom_f.mak0000644000175000017500000000263711335643252017131 0ustar brooniebroonie# Makefile for zlib # OpenWatcom flat model # Last updated: 28-Dec-2005 # To use, do "wmake -f watcom_f.mak" C_SOURCE = adler32.c compress.c crc32.c deflate.c & gzclose.c gzlib.c gzread.c gzwrite.c & infback.c inffast.c inflate.c inftrees.c & trees.c uncompr.c zutil.c OBJS = adler32.obj compress.obj crc32.obj deflate.obj & gzclose.obj gzlib.obj gzread.obj gzwrite.obj & infback.obj inffast.obj inflate.obj inftrees.obj & trees.obj uncompr.obj zutil.obj CC = wcc386 LINKER = wcl386 CFLAGS = -zq -mf -3r -fp3 -s -bt=dos -oilrtfm -fr=nul -wx ZLIB_LIB = zlib_f.lib .C.OBJ: $(CC) $(CFLAGS) $[@ all: $(ZLIB_LIB) example.exe minigzip.exe $(ZLIB_LIB): $(OBJS) wlib -b -c $(ZLIB_LIB) -+adler32.obj -+compress.obj -+crc32.obj wlib -b -c $(ZLIB_LIB) -+gzclose.obj -+gzlib.obj -+gzread.obj -+gzwrite.obj wlib -b -c $(ZLIB_LIB) -+deflate.obj -+infback.obj wlib -b -c $(ZLIB_LIB) -+inffast.obj -+inflate.obj -+inftrees.obj wlib -b -c $(ZLIB_LIB) -+trees.obj -+uncompr.obj -+zutil.obj example.exe: $(ZLIB_LIB) example.obj $(LINKER) -ldos32a -fe=example.exe example.obj $(ZLIB_LIB) minigzip.exe: $(ZLIB_LIB) minigzip.obj $(LINKER) -ldos32a -fe=minigzip.exe minigzip.obj $(ZLIB_LIB) clean: .SYMBOLIC del *.obj del $(ZLIB_LIB) @echo Cleaning done zlib-1.2.11.dfsg/watcom/watcom_l.mak0000644000175000017500000000257711335643154017143 0ustar brooniebroonie# Makefile for zlib # OpenWatcom large model # Last updated: 28-Dec-2005 # To use, do "wmake -f watcom_l.mak" C_SOURCE = adler32.c compress.c crc32.c deflate.c & gzclose.c gzlib.c gzread.c gzwrite.c & infback.c inffast.c inflate.c inftrees.c & trees.c uncompr.c zutil.c OBJS = adler32.obj compress.obj crc32.obj deflate.obj & gzclose.obj gzlib.obj gzread.obj gzwrite.obj & infback.obj inffast.obj inflate.obj inftrees.obj & trees.obj uncompr.obj zutil.obj CC = wcc LINKER = wcl CFLAGS = -zq -ml -s -bt=dos -oilrtfm -fr=nul -wx ZLIB_LIB = zlib_l.lib .C.OBJ: $(CC) $(CFLAGS) $[@ all: $(ZLIB_LIB) example.exe minigzip.exe $(ZLIB_LIB): $(OBJS) wlib -b -c $(ZLIB_LIB) -+adler32.obj -+compress.obj -+crc32.obj wlib -b -c $(ZLIB_LIB) -+gzclose.obj -+gzlib.obj -+gzread.obj -+gzwrite.obj wlib -b -c $(ZLIB_LIB) -+deflate.obj -+infback.obj wlib -b -c $(ZLIB_LIB) -+inffast.obj -+inflate.obj -+inftrees.obj wlib -b -c $(ZLIB_LIB) -+trees.obj -+uncompr.obj -+zutil.obj example.exe: $(ZLIB_LIB) example.obj $(LINKER) -fe=example.exe example.obj $(ZLIB_LIB) minigzip.exe: $(ZLIB_LIB) minigzip.obj $(LINKER) -fe=minigzip.exe minigzip.obj $(ZLIB_LIB) clean: .SYMBOLIC del *.obj del $(ZLIB_LIB) @echo Cleaning done zlib-1.2.11.dfsg/configure0000755000175000017500000006712413031771660015257 0ustar brooniebroonie#!/bin/sh # configure script for zlib. # # Normally configure builds both a static and a shared library. # If you want to build just a static library, use: ./configure --static # # To impose specific compiler or flags or install directory, use for example: # prefix=$HOME CC=cc CFLAGS="-O4" ./configure # or for csh/tcsh users: # (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure) # Incorrect settings of CC or CFLAGS may prevent creating a shared library. # If you have problems, try without defining CC and CFLAGS before reporting # an error. # start off configure.log echo -------------------- >> configure.log echo $0 $* >> configure.log date >> configure.log # get source directory SRCDIR=`dirname $0` if test $SRCDIR = "."; then ZINC="" ZINCOUT="-I." SRCDIR="" else ZINC='-include zconf.h' ZINCOUT='-I. -I$(SRCDIR)' SRCDIR="$SRCDIR/" fi # set command prefix for cross-compilation if [ -n "${CHOST}" ]; then uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`" CROSS_PREFIX="${CHOST}-" fi # destination name for static library STATICLIB=libz.a # extract zlib version numbers from zlib.h VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h` VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < ${SRCDIR}zlib.h` VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h` VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h` # establish commands for library building if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then AR=${AR-"${CROSS_PREFIX}ar"} test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log else AR=${AR-"ar"} test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log fi ARFLAGS=${ARFLAGS-"rc"} if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"} test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log else RANLIB=${RANLIB-"ranlib"} fi if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then NM=${NM-"${CROSS_PREFIX}nm"} test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log else NM=${NM-"nm"} fi # set defaults before processing command line options LDCONFIG=${LDCONFIG-"ldconfig"} LDSHAREDLIBC="${LDSHAREDLIBC--lc}" ARCHS= prefix=${prefix-/usr/local} exec_prefix=${exec_prefix-'${prefix}'} libdir=${libdir-'${exec_prefix}/lib'} sharedlibdir=${sharedlibdir-'${libdir}'} includedir=${includedir-'${prefix}/include'} mandir=${mandir-'${prefix}/share/man'} shared_ext='.so' shared=1 solo=0 cover=0 zprefix=0 zconst=0 build64=0 gcc=0 warn=0 debug=0 old_cc="$CC" old_cflags="$CFLAGS" OBJC='$(OBJZ) $(OBJG)' PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)' # leave this script, optionally in a bad way leave() { if test "$*" != "0"; then echo "** $0 aborting." | tee -a configure.log fi rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version echo -------------------- >> configure.log echo >> configure.log echo >> configure.log exit $1 } # process command line options while test $# -ge 1 do case "$1" in -h* | --help) echo 'usage:' | tee -a configure.log echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log exit 0 ;; -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;; -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;; -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;; --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;; -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;; -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;; -p* | --prefix) prefix="$2"; shift; shift ;; -e* | --eprefix) exec_prefix="$2"; shift; shift ;; -l* | --libdir) libdir="$2"; shift; shift ;; -i* | --includedir) includedir="$2"; shift; shift ;; -s* | --shared | --enable-shared) shared=1; shift ;; -t | --static) shared=0; shift ;; --solo) solo=1; shift ;; --cover) cover=1; shift ;; -z* | --zprefix) zprefix=1; shift ;; -6* | --64) build64=1; shift ;; -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;; --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;; --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;; -c* | --const) zconst=1; shift ;; -w* | --warn) warn=1; shift ;; -d* | --debug) debug=1; shift ;; *) echo "unknown option: $1" | tee -a configure.log echo "$0 --help for help" | tee -a configure.log leave 1;; esac done # temporary file name test=ztest$$ # put arguments in log, also put test file in log if used in arguments show() { case "$*" in *$test.c*) echo === $test.c === >> configure.log cat $test.c >> configure.log echo === >> configure.log;; esac echo $* >> configure.log } # check for gcc vs. cc and set compile and link flags based on the system identified by uname cat > $test.c <&1` in *gcc*) gcc=1 ;; *clang*) gcc=1 ;; esac show $cc -c $test.c if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then echo ... using gcc >> configure.log CC="$cc" CFLAGS="${CFLAGS--O3}" SFLAGS="${CFLAGS--O3} -fPIC" if test "$ARCHS"; then CFLAGS="${CFLAGS} ${ARCHS}" LDFLAGS="${LDFLAGS} ${ARCHS}" fi if test $build64 -eq 1; then CFLAGS="${CFLAGS} -m64" SFLAGS="${SFLAGS} -m64" fi if test "$warn" -eq 1; then if test "$zconst" -eq 1; then CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST" else CFLAGS="${CFLAGS} -Wall -Wextra -pedantic" fi fi if test $debug -eq 1; then CFLAGS="${CFLAGS} -DZLIB_DEBUG" SFLAGS="${SFLAGS} -DZLIB_DEBUG" fi if test -z "$uname"; then uname=`(uname -s || echo unknown) 2>/dev/null` fi case "$uname" in Linux* | linux* | GNU | GNU/* | solaris*) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;; *BSD | *bsd* | DragonFly) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} LDCONFIG="ldconfig -m" ;; CYGWIN* | Cygwin* | cygwin* | OS/2*) EXE='.exe' ;; MINGW* | mingw*) # temporary bypass rm -f $test.[co] $test $test$shared_ext echo "Please use win32/Makefile.gcc instead." | tee -a configure.log leave 1 LDSHARED=${LDSHARED-"$cc -shared"} LDSHAREDLIBC="" EXE='.exe' ;; QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4 # (alain.bonnefoy@icbt.com) LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;; HP-UX*) LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"} case `(uname -m || echo unknown) 2>/dev/null` in ia64) shared_ext='.so' SHAREDLIB='libz.so' ;; *) shared_ext='.sl' SHAREDLIB='libz.sl' ;; esac ;; Darwin* | darwin*) shared_ext='.dylib' SHAREDLIB=libz$shared_ext SHAREDLIBV=libz.$VER$shared_ext SHAREDLIBM=libz.$VER1$shared_ext LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} if libtool -V 2>&1 | grep Apple > /dev/null; then AR="libtool" else AR="/usr/bin/libtool" fi ARFLAGS="-o" ;; *) LDSHARED=${LDSHARED-"$cc -shared"} ;; esac else # find system name and corresponding cc options CC=${CC-cc} gcc=0 echo ... using $CC >> configure.log if test -z "$uname"; then uname=`(uname -sr || echo unknown) 2>/dev/null` fi case "$uname" in HP-UX*) SFLAGS=${CFLAGS-"-O +z"} CFLAGS=${CFLAGS-"-O"} # LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"} LDSHARED=${LDSHARED-"ld -b"} case `(uname -m || echo unknown) 2>/dev/null` in ia64) shared_ext='.so' SHAREDLIB='libz.so' ;; *) shared_ext='.sl' SHAREDLIB='libz.sl' ;; esac ;; IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."} CFLAGS=${CFLAGS-"-ansi -O2"} LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"} CFLAGS=${CFLAGS-"-O -std1"} LDFLAGS="${LDFLAGS} -Wl,-rpath,." LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;; OSF1*) SFLAGS=${CFLAGS-"-O -std1"} CFLAGS=${CFLAGS-"-O -std1"} LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;; QNX*) SFLAGS=${CFLAGS-"-4 -O"} CFLAGS=${CFLAGS-"-4 -O"} LDSHARED=${LDSHARED-"cc"} RANLIB=${RANLIB-"true"} AR="cc" ARFLAGS="-A" ;; SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "} CFLAGS=${CFLAGS-"-O3"} LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;; SunOS\ 5* | solaris*) LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"} SFLAGS=${CFLAGS-"-fast -KPIC"} CFLAGS=${CFLAGS-"-fast"} if test $build64 -eq 1; then # old versions of SunPRO/Workshop/Studio don't support -m64, # but newer ones do. Check for it. flag64=`$CC -flags | egrep -- '^-m64'` if test x"$flag64" != x"" ; then CFLAGS="${CFLAGS} -m64" SFLAGS="${SFLAGS} -m64" else case `(uname -m || echo unknown) 2>/dev/null` in i86*) SFLAGS="$SFLAGS -xarch=amd64" CFLAGS="$CFLAGS -xarch=amd64" ;; *) SFLAGS="$SFLAGS -xarch=v9" CFLAGS="$CFLAGS -xarch=v9" ;; esac fi fi if test -n "$ZINC"; then ZINC='-I- -I. -I$(SRCDIR)' fi ;; SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"} CFLAGS=${CFLAGS-"-O2"} LDSHARED=${LDSHARED-"ld"} ;; SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"} CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"} LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;; UNIX_System_V\ 4.2.0) SFLAGS=${CFLAGS-"-KPIC -O"} CFLAGS=${CFLAGS-"-O"} LDSHARED=${LDSHARED-"cc -G"} ;; UNIX_SV\ 4.2MP) SFLAGS=${CFLAGS-"-Kconform_pic -O"} CFLAGS=${CFLAGS-"-O"} LDSHARED=${LDSHARED-"cc -G"} ;; OpenUNIX\ 5) SFLAGS=${CFLAGS-"-KPIC -O"} CFLAGS=${CFLAGS-"-O"} LDSHARED=${LDSHARED-"cc -G"} ;; AIX*) # Courtesy of dbakker@arrayasolutions.com SFLAGS=${CFLAGS-"-O -qmaxmem=8192"} CFLAGS=${CFLAGS-"-O -qmaxmem=8192"} LDSHARED=${LDSHARED-"xlc -G"} ;; # send working options for other systems to zlib@gzip.org *) SFLAGS=${CFLAGS-"-O"} CFLAGS=${CFLAGS-"-O"} LDSHARED=${LDSHARED-"cc -shared"} ;; esac fi # destination names for shared library if not defined above SHAREDLIB=${SHAREDLIB-"libz$shared_ext"} SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"} SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"} echo >> configure.log # define functions for testing compiler and library characteristics and logging the results cat > $test.c </dev/null; then try() { show $* test "`( $* ) 2>&1 | tee -a configure.log`" = "" } echo - using any output from compiler to indicate an error >> configure.log else try() { show $* ( $* ) >> configure.log 2>&1 ret=$? if test $ret -ne 0; then echo "(exit code "$ret")" >> configure.log fi return $ret } fi tryboth() { show $* got=`( $* ) 2>&1` ret=$? printf %s "$got" >> configure.log if test $ret -ne 0; then return $ret fi test "$got" = "" } cat > $test.c << EOF int foo() { return 0; } EOF echo "Checking for obsessive-compulsive compiler options..." >> configure.log if try $CC -c $CFLAGS $test.c; then : else echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log leave 1 fi echo >> configure.log # see if shared library build supported cat > $test.c <> configure.log show "$NM $test.o | grep _hello" if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then CPP="$CPP -DNO_UNDERLINE" echo Checking for underline in external names... No. | tee -a configure.log else echo Checking for underline in external names... Yes. | tee -a configure.log fi ;; esac echo >> configure.log # check for size_t cat > $test.c < #include size_t dummy = 0; EOF if try $CC -c $CFLAGS $test.c; then echo "Checking for size_t... Yes." | tee -a configure.log need_sizet=0 else echo "Checking for size_t... No." | tee -a configure.log need_sizet=1 fi echo >> configure.log # find the size_t integer type, if needed if test $need_sizet -eq 1; then cat > $test.c < $test.c < int main(void) { if (sizeof(void *) <= sizeof(int)) puts("int"); else if (sizeof(void *) <= sizeof(long)) puts("long"); else puts("z_longlong"); return 0; } EOF else echo "Checking for long long... No." | tee -a configure.log cat > $test.c < int main(void) { if (sizeof(void *) <= sizeof(int)) puts("int"); else puts("long"); return 0; } EOF fi if try $CC $CFLAGS -o $test $test.c; then sizet=`./$test` echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log else echo "Failed to find a pointer-size integer type." | tee -a configure.log leave 1 fi fi if test $need_sizet -eq 1; then CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}" SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}" fi echo >> configure.log # check for large file support, and if none, check for fseeko() cat > $test.c < off64_t dummy = 0; EOF if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1" SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1" ALL="${ALL} all64" TEST="${TEST} test64" echo "Checking for off64_t... Yes." | tee -a configure.log echo "Checking for fseeko... Yes." | tee -a configure.log else echo "Checking for off64_t... No." | tee -a configure.log echo >> configure.log cat > $test.c < int main(void) { fseeko(NULL, 0, 0); return 0; } EOF if try $CC $CFLAGS -o $test $test.c; then echo "Checking for fseeko... Yes." | tee -a configure.log else CFLAGS="${CFLAGS} -DNO_FSEEKO" SFLAGS="${SFLAGS} -DNO_FSEEKO" echo "Checking for fseeko... No." | tee -a configure.log fi fi echo >> configure.log # check for strerror() for use by gz* functions cat > $test.c < #include int main() { return strlen(strerror(errno)); } EOF if try $CC $CFLAGS -o $test $test.c; then echo "Checking for strerror... Yes." | tee -a configure.log else CFLAGS="${CFLAGS} -DNO_STRERROR" SFLAGS="${SFLAGS} -DNO_STRERROR" echo "Checking for strerror... No." | tee -a configure.log fi # copy clean zconf.h for subsequent edits cp -p ${SRCDIR}zconf.h.in zconf.h echo >> configure.log # check for unistd.h and save result in zconf.h cat > $test.c < int main() { return 0; } EOF if try $CC -c $CFLAGS $test.c; then sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h mv zconf.temp.h zconf.h echo "Checking for unistd.h... Yes." | tee -a configure.log else echo "Checking for unistd.h... No." | tee -a configure.log fi echo >> configure.log # check for stdarg.h and save result in zconf.h cat > $test.c < int main() { return 0; } EOF if try $CC -c $CFLAGS $test.c; then sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h mv zconf.temp.h zconf.h echo "Checking for stdarg.h... Yes." | tee -a configure.log else echo "Checking for stdarg.h... No." | tee -a configure.log fi # if the z_ prefix was requested, save that in zconf.h if test $zprefix -eq 1; then sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h mv zconf.temp.h zconf.h echo >> configure.log echo "Using z_ prefix on all symbols." | tee -a configure.log fi # if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists if test $solo -eq 1; then sed '/#define ZCONF_H/a\ #define Z_SOLO ' < zconf.h > zconf.temp.h mv zconf.temp.h zconf.h OBJC='$(OBJZ)' PIC_OBJC='$(PIC_OBJZ)' fi # if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X if test $cover -eq 1; then CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage" if test -n "$GCC_CLASSIC"; then CC=$GCC_CLASSIC fi fi echo >> configure.log # conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions # (using stdarg or not), with or without "n" (proving size of buffer), and with or without a # return value. The most secure result is vsnprintf() with a return value. snprintf() with a # return value is secure as well, but then gzprintf() will be limited to 20 arguments. cat > $test.c < #include #include "zconf.h" int main() { #ifndef STDC choke me #endif return 0; } EOF if try $CC -c $CFLAGS $test.c; then echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log echo >> configure.log cat > $test.c < #include int mytest(const char *fmt, ...) { char buf[20]; va_list ap; va_start(ap, fmt); vsnprintf(buf, sizeof(buf), fmt, ap); va_end(ap); return 0; } int main() { return (mytest("Hello%d\n", 1)); } EOF if try $CC $CFLAGS -o $test $test.c; then echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log echo >> configure.log cat >$test.c < #include int mytest(const char *fmt, ...) { int n; char buf[20]; va_list ap; va_start(ap, fmt); n = vsnprintf(buf, sizeof(buf), fmt, ap); va_end(ap); return n; } int main() { return (mytest("Hello%d\n", 1)); } EOF if try $CC -c $CFLAGS $test.c; then echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log else CFLAGS="$CFLAGS -DHAS_vsnprintf_void" SFLAGS="$SFLAGS -DHAS_vsnprintf_void" echo "Checking for return value of vsnprintf()... No." | tee -a configure.log echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log echo " can build but will be open to possible string-format security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log fi else CFLAGS="$CFLAGS -DNO_vsnprintf" SFLAGS="$SFLAGS -DNO_vsnprintf" echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log echo >> configure.log cat >$test.c < #include int mytest(const char *fmt, ...) { int n; char buf[20]; va_list ap; va_start(ap, fmt); n = vsprintf(buf, fmt, ap); va_end(ap); return n; } int main() { return (mytest("Hello%d\n", 1)); } EOF if try $CC -c $CFLAGS $test.c; then echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log else CFLAGS="$CFLAGS -DHAS_vsprintf_void" SFLAGS="$SFLAGS -DHAS_vsprintf_void" echo "Checking for return value of vsprintf()... No." | tee -a configure.log echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log echo " can build but will be open to possible string-format security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log fi fi else echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log echo >> configure.log cat >$test.c < int mytest() { char buf[20]; snprintf(buf, sizeof(buf), "%s", "foo"); return 0; } int main() { return (mytest()); } EOF if try $CC $CFLAGS -o $test $test.c; then echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log echo >> configure.log cat >$test.c < int mytest() { char buf[20]; return snprintf(buf, sizeof(buf), "%s", "foo"); } int main() { return (mytest()); } EOF if try $CC -c $CFLAGS $test.c; then echo "Checking for return value of snprintf()... Yes." | tee -a configure.log else CFLAGS="$CFLAGS -DHAS_snprintf_void" SFLAGS="$SFLAGS -DHAS_snprintf_void" echo "Checking for return value of snprintf()... No." | tee -a configure.log echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log echo " can build but will be open to possible string-format security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log fi else CFLAGS="$CFLAGS -DNO_snprintf" SFLAGS="$SFLAGS -DNO_snprintf" echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log echo >> configure.log cat >$test.c < int mytest() { char buf[20]; return sprintf(buf, "%s", "foo"); } int main() { return (mytest()); } EOF if try $CC -c $CFLAGS $test.c; then echo "Checking for return value of sprintf()... Yes." | tee -a configure.log else CFLAGS="$CFLAGS -DHAS_sprintf_void" SFLAGS="$SFLAGS -DHAS_sprintf_void" echo "Checking for return value of sprintf()... No." | tee -a configure.log echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log echo " can build but will be open to possible string-format security" | tee -a configure.log echo " vulnerabilities." | tee -a configure.log fi fi fi # see if we can hide zlib internal symbols that are linked between separate source files if test "$gcc" -eq 1; then echo >> configure.log cat > $test.c <> configure.log echo ALL = $ALL >> configure.log echo AR = $AR >> configure.log echo ARFLAGS = $ARFLAGS >> configure.log echo CC = $CC >> configure.log echo CFLAGS = $CFLAGS >> configure.log echo CPP = $CPP >> configure.log echo EXE = $EXE >> configure.log echo LDCONFIG = $LDCONFIG >> configure.log echo LDFLAGS = $LDFLAGS >> configure.log echo LDSHARED = $LDSHARED >> configure.log echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log echo OBJC = $OBJC >> configure.log echo PIC_OBJC = $PIC_OBJC >> configure.log echo RANLIB = $RANLIB >> configure.log echo SFLAGS = $SFLAGS >> configure.log echo SHAREDLIB = $SHAREDLIB >> configure.log echo SHAREDLIBM = $SHAREDLIBM >> configure.log echo SHAREDLIBV = $SHAREDLIBV >> configure.log echo STATICLIB = $STATICLIB >> configure.log echo TEST = $TEST >> configure.log echo VER = $VER >> configure.log echo Z_U4 = $Z_U4 >> configure.log echo SRCDIR = $SRCDIR >> configure.log echo exec_prefix = $exec_prefix >> configure.log echo includedir = $includedir >> configure.log echo libdir = $libdir >> configure.log echo mandir = $mandir >> configure.log echo prefix = $prefix >> configure.log echo sharedlibdir = $sharedlibdir >> configure.log echo uname = $uname >> configure.log # udpate Makefile with the configure results sed < ${SRCDIR}Makefile.in " /^CC *=/s#=.*#=$CC# /^CFLAGS *=/s#=.*#=$CFLAGS# /^SFLAGS *=/s#=.*#=$SFLAGS# /^LDFLAGS *=/s#=.*#=$LDFLAGS# /^LDSHARED *=/s#=.*#=$LDSHARED# /^CPP *=/s#=.*#=$CPP# /^STATICLIB *=/s#=.*#=$STATICLIB# /^SHAREDLIB *=/s#=.*#=$SHAREDLIB# /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# /^AR *=/s#=.*#=$AR# /^ARFLAGS *=/s#=.*#=$ARFLAGS# /^RANLIB *=/s#=.*#=$RANLIB# /^LDCONFIG *=/s#=.*#=$LDCONFIG# /^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC# /^EXE *=/s#=.*#=$EXE# /^SRCDIR *=/s#=.*#=$SRCDIR# /^ZINC *=/s#=.*#=$ZINC# /^ZINCOUT *=/s#=.*#=$ZINCOUT# /^prefix *=/s#=.*#=$prefix# /^exec_prefix *=/s#=.*#=$exec_prefix# /^libdir *=/s#=.*#=$libdir# /^sharedlibdir *=/s#=.*#=$sharedlibdir# /^includedir *=/s#=.*#=$includedir# /^mandir *=/s#=.*#=$mandir# /^OBJC *=/s#=.*#= $OBJC# /^PIC_OBJC *=/s#=.*#= $PIC_OBJC# /^all: */s#:.*#: $ALL# /^test: */s#:.*#: $TEST# " > Makefile # create zlib.pc with the configure results sed < ${SRCDIR}zlib.pc.in " /^CC *=/s#=.*#=$CC# /^CFLAGS *=/s#=.*#=$CFLAGS# /^CPP *=/s#=.*#=$CPP# /^LDSHARED *=/s#=.*#=$LDSHARED# /^STATICLIB *=/s#=.*#=$STATICLIB# /^SHAREDLIB *=/s#=.*#=$SHAREDLIB# /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV# /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM# /^AR *=/s#=.*#=$AR# /^ARFLAGS *=/s#=.*#=$ARFLAGS# /^RANLIB *=/s#=.*#=$RANLIB# /^EXE *=/s#=.*#=$EXE# /^prefix *=/s#=.*#=$prefix# /^exec_prefix *=/s#=.*#=$exec_prefix# /^libdir *=/s#=.*#=$libdir# /^sharedlibdir *=/s#=.*#=$sharedlibdir# /^includedir *=/s#=.*#=$includedir# /^mandir *=/s#=.*#=$mandir# /^LDFLAGS *=/s#=.*#=$LDFLAGS# " | sed -e " s/\@VERSION\@/$VER/g; " > zlib.pc # done leave 0 zlib-1.2.11.dfsg/zlib.30000644000175000017500000001057513036730604014370 0ustar brooniebroonie.TH ZLIB 3 "15 Jan 2017" .SH NAME zlib \- compression/decompression library .SH SYNOPSIS [see .I zlib.h for full description] .SH DESCRIPTION The .I zlib library is a general purpose data compression library. The code is thread safe, assuming that the standard library functions used are thread safe, such as memory allocation routines. It provides in-memory compression and decompression functions, including integrity checks of the uncompressed data. This version of the library supports only one compression method (deflation) but other algorithms may be added later with the same stream interface. .LP Compression can be done in a single step if the buffers are large enough or can be done by repeated calls of the compression function. In the latter case, the application must provide more input and/or consume the output (providing more output space) before each call. .LP The library also supports reading and writing files in .IR gzip (1) (.gz) format with an interface similar to that of stdio. .LP The library does not install any signal handler. The decoder checks the consistency of the compressed data, so the library should never crash even in the case of corrupted input. .LP All functions of the compression library are documented in the file .IR zlib.h . The distribution source includes examples of use of the library in the files .I test/example.c and .IR test/minigzip.c, as well as other examples in the .IR examples/ directory. .LP Changes to this version are documented in the file .I ChangeLog that accompanies the source. .LP .I zlib is built in to many languages and operating systems, including but not limited to Java, Python, .NET, PHP, Perl, Ruby, Swift, and Go. .LP An experimental package to read and write files in the .zip format, written on top of .I zlib by Gilles Vollant (info@winimage.com), is available at: .IP http://www.winimage.com/zLibDll/minizip.html and also in the .I contrib/minizip directory of the main .I zlib source distribution. .SH "SEE ALSO" The .I zlib web site can be found at: .IP http://zlib.net/ .LP The data format used by the .I zlib library is described by RFC (Request for Comments) 1950 to 1952 in the files: .IP http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format) .br http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format) .br http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format) .LP Mark Nelson wrote an article about .I zlib for the Jan. 1997 issue of Dr. Dobb's Journal; a copy of the article is available at: .IP http://marknelson.us/1997/01/01/zlib-engine/ .SH "REPORTING PROBLEMS" Before reporting a problem, please check the .I zlib web site to verify that you have the latest version of .IR zlib ; otherwise, obtain the latest version and see if the problem still exists. Please read the .I zlib FAQ at: .IP http://zlib.net/zlib_faq.html .LP before asking for help. Send questions and/or comments to zlib@gzip.org, or (for the Windows DLL version) to Gilles Vollant (info@winimage.com). .SH AUTHORS AND LICENSE Version 1.2.11 .LP Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler .LP This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. .LP Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: .LP .nr step 1 1 .IP \n[step]. 3 The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. .IP \n+[step]. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. .IP \n+[step]. This notice may not be removed or altered from any source distribution. .LP Jean-loup Gailly Mark Adler .br jloup@gzip.org madler@alumni.caltech.edu .LP The deflate format used by .I zlib was defined by Phil Katz. The deflate and .I zlib specifications were written by L. Peter Deutsch. Thanks to all the people who reported problems and suggested various improvements in .IR zlib ; who are too numerous to cite here. .LP UNIX manual page by R. P. C. Rodgers, U.S. National Library of Medicine (rodgers@nlm.nih.gov). .\" end of man page zlib-1.2.11.dfsg/doc/0000755000175000017500000000000013162250434014077 5ustar brooniebrooniezlib-1.2.11.dfsg/doc/txtvsbin.txt0000644000175000017500000001211110436352650016521 0ustar brooniebroonieA Fast Method for Identifying Plain Text Files ============================================== Introduction ------------ Given a file coming from an unknown source, it is sometimes desirable to find out whether the format of that file is plain text. Although this may appear like a simple task, a fully accurate detection of the file type requires heavy-duty semantic analysis on the file contents. It is, however, possible to obtain satisfactory results by employing various heuristics. Previous versions of PKZip and other zip-compatible compression tools were using a crude detection scheme: if more than 80% (4/5) of the bytes found in a certain buffer are within the range [7..127], the file is labeled as plain text, otherwise it is labeled as binary. A prominent limitation of this scheme is the restriction to Latin-based alphabets. Other alphabets, like Greek, Cyrillic or Asian, make extensive use of the bytes within the range [128..255], and texts using these alphabets are most often misidentified by this scheme; in other words, the rate of false negatives is sometimes too high, which means that the recall is low. Another weakness of this scheme is a reduced precision, due to the false positives that may occur when binary files containing large amounts of textual characters are misidentified as plain text. In this article we propose a new, simple detection scheme that features a much increased precision and a near-100% recall. This scheme is designed to work on ASCII, Unicode and other ASCII-derived alphabets, and it handles single-byte encodings (ISO-8859, MacRoman, KOI8, etc.) and variable-sized encodings (ISO-2022, UTF-8, etc.). Wider encodings (UCS-2/UTF-16 and UCS-4/UTF-32) are not handled, however. The Algorithm ------------- The algorithm works by dividing the set of bytecodes [0..255] into three categories: - The white list of textual bytecodes: 9 (TAB), 10 (LF), 13 (CR), 32 (SPACE) to 255. - The gray list of tolerated bytecodes: 7 (BEL), 8 (BS), 11 (VT), 12 (FF), 26 (SUB), 27 (ESC). - The black list of undesired, non-textual bytecodes: 0 (NUL) to 6, 14 to 31. If a file contains at least one byte that belongs to the white list and no byte that belongs to the black list, then the file is categorized as plain text; otherwise, it is categorized as binary. (The boundary case, when the file is empty, automatically falls into the latter category.) Rationale --------- The idea behind this algorithm relies on two observations. The first observation is that, although the full range of 7-bit codes [0..127] is properly specified by the ASCII standard, most control characters in the range [0..31] are not used in practice. The only widely-used, almost universally-portable control codes are 9 (TAB), 10 (LF) and 13 (CR). There are a few more control codes that are recognized on a reduced range of platforms and text viewers/editors: 7 (BEL), 8 (BS), 11 (VT), 12 (FF), 26 (SUB) and 27 (ESC); but these codes are rarely (if ever) used alone, without being accompanied by some printable text. Even the newer, portable text formats such as XML avoid using control characters outside the list mentioned here. The second observation is that most of the binary files tend to contain control characters, especially 0 (NUL). Even though the older text detection schemes observe the presence of non-ASCII codes from the range [128..255], the precision rarely has to suffer if this upper range is labeled as textual, because the files that are genuinely binary tend to contain both control characters and codes from the upper range. On the other hand, the upper range needs to be labeled as textual, because it is used by virtually all ASCII extensions. In particular, this range is used for encoding non-Latin scripts. Since there is no counting involved, other than simply observing the presence or the absence of some byte values, the algorithm produces consistent results, regardless what alphabet encoding is being used. (If counting were involved, it could be possible to obtain different results on a text encoded, say, using ISO-8859-16 versus UTF-8.) There is an extra category of plain text files that are "polluted" with one or more black-listed codes, either by mistake or by peculiar design considerations. In such cases, a scheme that tolerates a small fraction of black-listed codes would provide an increased recall (i.e. more true positives). This, however, incurs a reduced precision overall, since false positives are more likely to appear in binary files that contain large chunks of textual data. Furthermore, "polluted" plain text should be regarded as binary by general-purpose text detection schemes, because general-purpose text processing algorithms might not be applicable. Under this premise, it is safe to say that our detection method provides a near-100% recall. Experiments have been run on many files coming from various platforms and applications. We tried plain text files, system logs, source code, formatted office documents, compiled object code, etc. The results confirm the optimistic assumptions about the capabilities of this algorithm. -- Cosmin Truta Last updated: 2006-May-28 zlib-1.2.11.dfsg/doc/algorithm.txt0000644000175000017500000002216711632757755016660 0ustar brooniebroonie1. Compression algorithm (deflate) The deflation algorithm used by gzip (also zip and zlib) is a variation of LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in the input data. The second occurrence of a string is replaced by a pointer to the previous string, in the form of a pair (distance, length). Distances are limited to 32K bytes, and lengths are limited to 258 bytes. When a string does not occur anywhere in the previous 32K bytes, it is emitted as a sequence of literal bytes. (In this description, `string' must be taken as an arbitrary sequence of bytes, and is not restricted to printable characters.) Literals or match lengths are compressed with one Huffman tree, and match distances are compressed with another tree. The trees are stored in a compact form at the start of each block. The blocks can have any size (except that the compressed data for one block must fit in available memory). A block is terminated when deflate() determines that it would be useful to start another block with fresh trees. (This is somewhat similar to the behavior of LZW-based _compress_.) Duplicated strings are found using a hash table. All input strings of length 3 are inserted in the hash table. A hash index is computed for the next 3 bytes. If the hash chain for this index is not empty, all strings in the chain are compared with the current input string, and the longest match is selected. The hash chains are searched starting with the most recent strings, to favor small distances and thus take advantage of the Huffman encoding. The hash chains are singly linked. There are no deletions from the hash chains, the algorithm simply discards matches that are too old. To avoid a worst-case situation, very long hash chains are arbitrarily truncated at a certain length, determined by a runtime option (level parameter of deflateInit). So deflate() does not always find the longest possible match but generally finds a match which is long enough. deflate() also defers the selection of matches with a lazy evaluation mechanism. After a match of length N has been found, deflate() searches for a longer match at the next input byte. If a longer match is found, the previous match is truncated to a length of one (thus producing a single literal byte) and the process of lazy evaluation begins again. Otherwise, the original match is kept, and the next match search is attempted only N steps later. The lazy match evaluation is also subject to a runtime parameter. If the current match is long enough, deflate() reduces the search for a longer match, thus speeding up the whole process. If compression ratio is more important than speed, deflate() attempts a complete second search even if the first match is already long enough. The lazy match evaluation is not performed for the fastest compression modes (level parameter 1 to 3). For these fast modes, new strings are inserted in the hash table only when no match was found, or when the match is not too long. This degrades the compression ratio but saves time since there are both fewer insertions and fewer searches. 2. Decompression algorithm (inflate) 2.1 Introduction The key question is how to represent a Huffman code (or any prefix code) so that you can decode fast. The most important characteristic is that shorter codes are much more common than longer codes, so pay attention to decoding the short codes fast, and let the long codes take longer to decode. inflate() sets up a first level table that covers some number of bits of input less than the length of longest code. It gets that many bits from the stream, and looks it up in the table. The table will tell if the next code is that many bits or less and how many, and if it is, it will tell the value, else it will point to the next level table for which inflate() grabs more bits and tries to decode a longer code. How many bits to make the first lookup is a tradeoff between the time it takes to decode and the time it takes to build the table. If building the table took no time (and if you had infinite memory), then there would only be a first level table to cover all the way to the longest code. However, building the table ends up taking a lot longer for more bits since short codes are replicated many times in such a table. What inflate() does is simply to make the number of bits in the first table a variable, and then to set that variable for the maximum speed. For inflate, which has 286 possible codes for the literal/length tree, the size of the first table is nine bits. Also the distance trees have 30 possible values, and the size of the first table is six bits. Note that for each of those cases, the table ended up one bit longer than the ``average'' code length, i.e. the code length of an approximately flat code which would be a little more than eight bits for 286 symbols and a little less than five bits for 30 symbols. 2.2 More details on the inflate table lookup Ok, you want to know what this cleverly obfuscated inflate tree actually looks like. You are correct that it's not a Huffman tree. It is simply a lookup table for the first, let's say, nine bits of a Huffman symbol. The symbol could be as short as one bit or as long as 15 bits. If a particular symbol is shorter than nine bits, then that symbol's translation is duplicated in all those entries that start with that symbol's bits. For example, if the symbol is four bits, then it's duplicated 32 times in a nine-bit table. If a symbol is nine bits long, it appears in the table once. If the symbol is longer than nine bits, then that entry in the table points to another similar table for the remaining bits. Again, there are duplicated entries as needed. The idea is that most of the time the symbol will be short and there will only be one table look up. (That's whole idea behind data compression in the first place.) For the less frequent long symbols, there will be two lookups. If you had a compression method with really long symbols, you could have as many levels of lookups as is efficient. For inflate, two is enough. So a table entry either points to another table (in which case nine bits in the above example are gobbled), or it contains the translation for the symbol and the number of bits to gobble. Then you start again with the next ungobbled bit. You may wonder: why not just have one lookup table for how ever many bits the longest symbol is? The reason is that if you do that, you end up spending more time filling in duplicate symbol entries than you do actually decoding. At least for deflate's output that generates new trees every several 10's of kbytes. You can imagine that filling in a 2^15 entry table for a 15-bit code would take too long if you're only decoding several thousand symbols. At the other extreme, you could make a new table for every bit in the code. In fact, that's essentially a Huffman tree. But then you spend too much time traversing the tree while decoding, even for short symbols. So the number of bits for the first lookup table is a trade of the time to fill out the table vs. the time spent looking at the second level and above of the table. Here is an example, scaled down: The code being decoded, with 10 symbols, from 1 to 6 bits long: A: 0 B: 10 C: 1100 D: 11010 E: 11011 F: 11100 G: 11101 H: 11110 I: 111110 J: 111111 Let's make the first table three bits long (eight entries): 000: A,1 001: A,1 010: A,1 011: A,1 100: B,2 101: B,2 110: -> table X (gobble 3 bits) 111: -> table Y (gobble 3 bits) Each entry is what the bits decode as and how many bits that is, i.e. how many bits to gobble. Or the entry points to another table, with the number of bits to gobble implicit in the size of the table. Table X is two bits long since the longest code starting with 110 is five bits long: 00: C,1 01: C,1 10: D,2 11: E,2 Table Y is three bits long since the longest code starting with 111 is six bits long: 000: F,2 001: F,2 010: G,2 011: G,2 100: H,2 101: H,2 110: I,3 111: J,3 So what we have here are three tables with a total of 20 entries that had to be constructed. That's compared to 64 entries for a single table. Or compared to 16 entries for a Huffman tree (six two entry tables and one four entry table). Assuming that the code ideally represents the probability of the symbols, it takes on the average 1.25 lookups per symbol. That's compared to one lookup for the single table, or 1.66 lookups per symbol for the Huffman tree. There, I think that gives you a picture of what's going on. For inflate, the meaning of a particular symbol is often more than just a letter. It can be a byte (a "literal"), or it can be either a length or a distance which indicates a base value and a number of bits to fetch after the code that is added to the base value. Or it might be the special end-of-block code. The data structures created in inftrees.c try to encode all that information compactly in the tables. Jean-loup Gailly Mark Adler jloup@gzip.org madler@alumni.caltech.edu References: [LZ77] Ziv J., Lempel A., ``A Universal Algorithm for Sequential Data Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3, pp. 337-343. ``DEFLATE Compressed Data Format Specification'' available in http://tools.ietf.org/html/rfc1951 zlib-1.2.11.dfsg/old/0000755000175000017500000000000013162250104014102 5ustar brooniebrooniezlib-1.2.11.dfsg/old/Makefile.riscos0000644000175000017500000000726710265040507017064 0ustar brooniebroonie# Project: zlib_1_03 # Patched for zlib 1.1.2 rw@shadow.org.uk 19980430 # test works out-of-the-box, installs `somewhere' on demand # Toolflags: CCflags = -c -depend !Depend -IC: -g -throwback -DRISCOS -fah C++flags = -c -depend !Depend -IC: -throwback Linkflags = -aif -c++ -o $@ ObjAsmflags = -throwback -NoCache -depend !Depend CMHGflags = LibFileflags = -c -l -o $@ Squeezeflags = -o $@ # change the line below to where _you_ want the library installed. libdest = lib:zlib # Final targets: @.lib: @.o.adler32 @.o.compress @.o.crc32 @.o.deflate @.o.gzio \ @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil @.o.trees \ @.o.uncompr @.o.zutil LibFile $(LibFileflags) @.o.adler32 @.o.compress @.o.crc32 @.o.deflate \ @.o.gzio @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil \ @.o.trees @.o.uncompr @.o.zutil test: @.minigzip @.example @.lib @copy @.lib @.libc A~C~DF~L~N~P~Q~RS~TV @echo running tests: hang on. @/@.minigzip -f -9 libc @/@.minigzip -d libc-gz @/@.minigzip -f -1 libc @/@.minigzip -d libc-gz @/@.minigzip -h -9 libc @/@.minigzip -d libc-gz @/@.minigzip -h -1 libc @/@.minigzip -d libc-gz @/@.minigzip -9 libc @/@.minigzip -d libc-gz @/@.minigzip -1 libc @/@.minigzip -d libc-gz @diff @.lib @.libc @echo that should have reported '@.lib and @.libc identical' if you have diff. @/@.example @.fred @.fred @echo that will have given lots of hello!'s. @.minigzip: @.o.minigzip @.lib C:o.Stubs Link $(Linkflags) @.o.minigzip @.lib C:o.Stubs @.example: @.o.example @.lib C:o.Stubs Link $(Linkflags) @.o.example @.lib C:o.Stubs install: @.lib cdir $(libdest) cdir $(libdest).h @copy @.h.zlib $(libdest).h.zlib A~C~DF~L~N~P~Q~RS~TV @copy @.h.zconf $(libdest).h.zconf A~C~DF~L~N~P~Q~RS~TV @copy @.lib $(libdest).lib A~C~DF~L~N~P~Q~RS~TV @echo okay, installed zlib in $(libdest) clean:; remove @.minigzip remove @.example remove @.libc -wipe @.o.* F~r~cV remove @.fred # User-editable dependencies: .c.o: cc $(ccflags) -o $@ $< # Static dependencies: # Dynamic dependencies: o.example: c.example o.example: h.zlib o.example: h.zconf o.minigzip: c.minigzip o.minigzip: h.zlib o.minigzip: h.zconf o.adler32: c.adler32 o.adler32: h.zlib o.adler32: h.zconf o.compress: c.compress o.compress: h.zlib o.compress: h.zconf o.crc32: c.crc32 o.crc32: h.zlib o.crc32: h.zconf o.deflate: c.deflate o.deflate: h.deflate o.deflate: h.zutil o.deflate: h.zlib o.deflate: h.zconf o.gzio: c.gzio o.gzio: h.zutil o.gzio: h.zlib o.gzio: h.zconf o.infblock: c.infblock o.infblock: h.zutil o.infblock: h.zlib o.infblock: h.zconf o.infblock: h.infblock o.infblock: h.inftrees o.infblock: h.infcodes o.infblock: h.infutil o.infcodes: c.infcodes o.infcodes: h.zutil o.infcodes: h.zlib o.infcodes: h.zconf o.infcodes: h.inftrees o.infcodes: h.infblock o.infcodes: h.infcodes o.infcodes: h.infutil o.infcodes: h.inffast o.inffast: c.inffast o.inffast: h.zutil o.inffast: h.zlib o.inffast: h.zconf o.inffast: h.inftrees o.inffast: h.infblock o.inffast: h.infcodes o.inffast: h.infutil o.inffast: h.inffast o.inflate: c.inflate o.inflate: h.zutil o.inflate: h.zlib o.inflate: h.zconf o.inflate: h.infblock o.inftrees: c.inftrees o.inftrees: h.zutil o.inftrees: h.zlib o.inftrees: h.zconf o.inftrees: h.inftrees o.inftrees: h.inffixed o.infutil: c.infutil o.infutil: h.zutil o.infutil: h.zlib o.infutil: h.zconf o.infutil: h.infblock o.infutil: h.inftrees o.infutil: h.infcodes o.infutil: h.infutil o.trees: c.trees o.trees: h.deflate o.trees: h.zutil o.trees: h.zlib o.trees: h.zconf o.trees: h.trees o.uncompr: c.uncompr o.uncompr: h.zlib o.uncompr: h.zconf o.zutil: c.zutil o.zutil: h.zutil o.zutil: h.zlib o.zutil: h.zconf zlib-1.2.11.dfsg/old/Makefile.emx0000644000175000017500000000266012556064077016360 0ustar brooniebroonie# Makefile for zlib. Modified for emx/rsxnt by Chr. Spieler, 6/16/98. # Copyright (C) 1995-1998 Jean-loup Gailly. # For conditions of distribution and use, see copyright notice in zlib.h # To compile, or to compile and test, type: # # make -fmakefile.emx; make test -fmakefile.emx # CC=gcc -Zwin32 #CFLAGS=-MMD -O #CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7 #CFLAGS=-MMD -g -DZLIB_DEBUG CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \ -Wstrict-prototypes -Wmissing-prototypes # If cp.exe is available, replace "copy /Y" with "cp -fp" . CP=copy /Y # If gnu install.exe is available, replace $(CP) with ginstall. INSTALL=$(CP) # The default value of RM is "rm -f." If "rm.exe" is found, comment out: RM=del LDLIBS=-L. -lzlib LD=$(CC) -s -o LDSHARED=$(CC) INCL=zlib.h zconf.h LIBS=zlib.a AR=ar rcs prefix=/usr/local exec_prefix = $(prefix) OBJS = adler32.o compress.o crc32.o deflate.o gzclose.o gzlib.o gzread.o \ gzwrite.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o TEST_OBJS = example.o minigzip.o all: example.exe minigzip.exe test: all ./example echo hello world | .\minigzip | .\minigzip -d %.o : %.c $(CC) $(CFLAGS) -c $< -o $@ zlib.a: $(OBJS) $(AR) $@ $(OBJS) %.exe : %.o $(LIBS) $(LD) $@ $< $(LDLIBS) .PHONY : clean clean: $(RM) *.d $(RM) *.o $(RM) *.exe $(RM) zlib.a $(RM) foo.gz DEPS := $(wildcard *.d) ifneq ($(DEPS),) include $(DEPS) endif zlib-1.2.11.dfsg/old/os2/0000755000175000017500000000000013162250104014605 5ustar brooniebrooniezlib-1.2.11.dfsg/old/os2/Makefile.os20000644000175000017500000001001512556064077016766 0ustar brooniebroonie# Makefile for zlib under OS/2 using GCC (PGCC) # For conditions of distribution and use, see copyright notice in zlib.h # To compile and test, type: # cp Makefile.os2 .. # cd .. # make -f Makefile.os2 test # This makefile will build a static library z.lib, a shared library # z.dll and a import library zdll.lib. You can use either z.lib or # zdll.lib by specifying either -lz or -lzdll on gcc's command line CC=gcc -Zomf -s CFLAGS=-O6 -Wall #CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7 #CFLAGS=-g -DZLIB_DEBUG #CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \ # -Wstrict-prototypes -Wmissing-prototypes #################### BUG WARNING: ##################### ## infcodes.c hits a bug in pgcc-1.0, so you have to use either ## -O# where # <= 4 or one of (-fno-ommit-frame-pointer or -fno-force-mem) ## This bug is reportedly fixed in pgcc >1.0, but this was not tested CFLAGS+=-fno-force-mem LDFLAGS=-s -L. -lzdll -Zcrtdll LDSHARED=$(CC) -s -Zomf -Zdll -Zcrtdll VER=1.1.0 ZLIB=z.lib SHAREDLIB=z.dll SHAREDLIBIMP=zdll.lib LIBS=$(ZLIB) $(SHAREDLIB) $(SHAREDLIBIMP) AR=emxomfar cr IMPLIB=emximp RANLIB=echo TAR=tar SHELL=bash prefix=/usr/local exec_prefix = $(prefix) OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \ zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o inffast.o TEST_OBJS = example.o minigzip.o DISTFILES = README INDEX ChangeLog configure Make*[a-z0-9] *.[ch] descrip.mms \ algorithm.txt zlib.3 msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \ nt/Makefile.nt nt/zlib.dnt contrib/README.contrib contrib/*.txt \ contrib/asm386/*.asm contrib/asm386/*.c \ contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/iostream/*.cpp \ contrib/iostream/*.h contrib/iostream2/*.h contrib/iostream2/*.cpp \ contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32 all: example.exe minigzip.exe test: all @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \ echo hello world | ./minigzip | ./minigzip -d || \ echo ' *** minigzip test FAILED ***' ; \ if ./example; then \ echo ' *** zlib test OK ***'; \ else \ echo ' *** zlib test FAILED ***'; \ fi $(ZLIB): $(OBJS) $(AR) $@ $(OBJS) -@ ($(RANLIB) $@ || true) >/dev/null 2>&1 $(SHAREDLIB): $(OBJS) os2/z.def $(LDSHARED) -o $@ $^ $(SHAREDLIBIMP): os2/z.def $(IMPLIB) -o $@ $^ example.exe: example.o $(LIBS) $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS) minigzip.exe: minigzip.o $(LIBS) $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS) clean: rm -f *.o *~ example minigzip libz.a libz.so* foo.gz distclean: clean zip: mv Makefile Makefile~; cp -p Makefile.in Makefile rm -f test.c ztest*.c v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\ zip -ul9 zlib$$v $(DISTFILES) mv Makefile~ Makefile dist: mv Makefile Makefile~; cp -p Makefile.in Makefile rm -f test.c ztest*.c d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\ rm -f $$d.tar.gz; \ if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \ files=""; \ for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \ cd ..; \ GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \ if test ! -d $$d; then rm -f $$d; fi mv Makefile~ Makefile tags: etags *.[ch] depend: makedepend -- $(CFLAGS) -- *.[ch] # DO NOT DELETE THIS LINE -- make depend depends on it. adler32.o: zlib.h zconf.h compress.o: zlib.h zconf.h crc32.o: zlib.h zconf.h deflate.o: deflate.h zutil.h zlib.h zconf.h example.o: zlib.h zconf.h gzio.o: zutil.h zlib.h zconf.h infblock.o: infblock.h inftrees.h infcodes.h infutil.h zutil.h zlib.h zconf.h infcodes.o: zutil.h zlib.h zconf.h infcodes.o: inftrees.h infblock.h infcodes.h infutil.h inffast.h inffast.o: zutil.h zlib.h zconf.h inftrees.h inffast.o: infblock.h infcodes.h infutil.h inffast.h inflate.o: zutil.h zlib.h zconf.h infblock.h inftrees.o: zutil.h zlib.h zconf.h inftrees.h infutil.o: zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h minigzip.o: zlib.h zconf.h trees.o: deflate.h zutil.h zlib.h zconf.h trees.h uncompr.o: zlib.h zconf.h zutil.o: zutil.h zlib.h zconf.h zlib-1.2.11.dfsg/old/os2/zlib.def0000644000175000017500000000141206476221612016237 0ustar brooniebroonie; ; Slightly modified version of ../nt/zlib.dnt :-) ; LIBRARY Z DESCRIPTION "Zlib compression library for OS/2" CODE PRELOAD MOVEABLE DISCARDABLE DATA PRELOAD MOVEABLE MULTIPLE EXPORTS adler32 compress crc32 deflate deflateCopy deflateEnd deflateInit2_ deflateInit_ deflateParams deflateReset deflateSetDictionary gzclose gzdopen gzerror gzflush gzopen gzread gzwrite inflate inflateEnd inflateInit2_ inflateInit_ inflateReset inflateSetDictionary inflateSync uncompress zlibVersion gzprintf gzputc gzgetc gzseek gzrewind gztell gzeof gzsetparams zError inflateSyncPoint get_crc_table compress2 gzputs gzgets zlib-1.2.11.dfsg/old/visual-basic.txt0000644000175000017500000001365407747106546017264 0ustar brooniebroonieSee below some functions declarations for Visual Basic. Frequently Asked Question: Q: Each time I use the compress function I get the -5 error (not enough room in the output buffer). A: Make sure that the length of the compressed buffer is passed by reference ("as any"), not by value ("as long"). Also check that before the call of compress this length is equal to the total size of the compressed buffer and not zero. From: "Jon Caruana" Subject: Re: How to port zlib declares to vb? Date: Mon, 28 Oct 1996 18:33:03 -0600 Got the answer! (I haven't had time to check this but it's what I got, and looks correct): He has the following routines working: compress uncompress gzopen gzwrite gzread gzclose Declares follow: (Quoted from Carlos Rios , in Vb4 form) #If Win16 Then 'Use Win16 calls. Declare Function compress Lib "ZLIB.DLL" (ByVal compr As String, comprLen As Any, ByVal buf As String, ByVal buflen As Long) As Integer Declare Function uncompress Lib "ZLIB.DLL" (ByVal uncompr As String, uncomprLen As Any, ByVal compr As String, ByVal lcompr As Long) As Integer Declare Function gzopen Lib "ZLIB.DLL" (ByVal filePath As String, ByVal mode As String) As Long Declare Function gzread Lib "ZLIB.DLL" (ByVal file As Long, ByVal uncompr As String, ByVal uncomprLen As Integer) As Integer Declare Function gzwrite Lib "ZLIB.DLL" (ByVal file As Long, ByVal uncompr As String, ByVal uncomprLen As Integer) As Integer Declare Function gzclose Lib "ZLIB.DLL" (ByVal file As Long) As Integer #Else Declare Function compress Lib "ZLIB32.DLL" (ByVal compr As String, comprLen As Any, ByVal buf As String, ByVal buflen As Long) As Integer Declare Function uncompress Lib "ZLIB32.DLL" (ByVal uncompr As String, uncomprLen As Any, ByVal compr As String, ByVal lcompr As Long) As Long Declare Function gzopen Lib "ZLIB32.DLL" (ByVal file As String, ByVal mode As String) As Long Declare Function gzread Lib "ZLIB32.DLL" (ByVal file As Long, ByVal uncompr As String, ByVal uncomprLen As Long) As Long Declare Function gzwrite Lib "ZLIB32.DLL" (ByVal file As Long, ByVal uncompr As String, ByVal uncomprLen As Long) As Long Declare Function gzclose Lib "ZLIB32.DLL" (ByVal file As Long) As Long #End If -Jon Caruana jon-net@usa.net Microsoft Sitebuilder Network Level 1 Member - HTML Writer's Guild Member Here is another example from Michael that he says conforms to the VB guidelines, and that solves the problem of not knowing the uncompressed size by storing it at the end of the file: 'Calling the functions: 'bracket meaning: [optional] {Range of possible values} 'Call subCompressFile( [, , [level of compression {1..9}]]) 'Call subUncompressFile() Option Explicit Private lngpvtPcnSml As Long 'Stores value for 'lngPercentSmaller' Private Const SUCCESS As Long = 0 Private Const strFilExt As String = ".cpr" Private Declare Function lngfncCpr Lib "zlib.dll" Alias "compress2" (ByRef dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long, ByVal level As Integer) As Long Private Declare Function lngfncUcp Lib "zlib.dll" Alias "uncompress" (ByRef dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long) As Long Public Sub subCompressFile(ByVal strargOriFilPth As String, Optional ByVal strargCprFilPth As String, Optional ByVal intLvl As Integer = 9) Dim strCprPth As String Dim lngOriSiz As Long Dim lngCprSiz As Long Dim bytaryOri() As Byte Dim bytaryCpr() As Byte lngOriSiz = FileLen(strargOriFilPth) ReDim bytaryOri(lngOriSiz - 1) Open strargOriFilPth For Binary Access Read As #1 Get #1, , bytaryOri() Close #1 strCprPth = IIf(strargCprFilPth = "", strargOriFilPth, strargCprFilPth) 'Select file path and name strCprPth = strCprPth & IIf(Right(strCprPth, Len(strFilExt)) = strFilExt, "", strFilExt) 'Add file extension if not exists lngCprSiz = (lngOriSiz * 1.01) + 12 'Compression needs temporary a bit more space then original file size ReDim bytaryCpr(lngCprSiz - 1) If lngfncCpr(bytaryCpr(0), lngCprSiz, bytaryOri(0), lngOriSiz, intLvl) = SUCCESS Then lngpvtPcnSml = (1# - (lngCprSiz / lngOriSiz)) * 100 ReDim Preserve bytaryCpr(lngCprSiz - 1) Open strCprPth For Binary Access Write As #1 Put #1, , bytaryCpr() Put #1, , lngOriSiz 'Add the the original size value to the end (last 4 bytes) Close #1 Else MsgBox "Compression error" End If Erase bytaryCpr Erase bytaryOri End Sub Public Sub subUncompressFile(ByVal strargFilPth As String) Dim bytaryCpr() As Byte Dim bytaryOri() As Byte Dim lngOriSiz As Long Dim lngCprSiz As Long Dim strOriPth As String lngCprSiz = FileLen(strargFilPth) ReDim bytaryCpr(lngCprSiz - 1) Open strargFilPth For Binary Access Read As #1 Get #1, , bytaryCpr() Close #1 'Read the original file size value: lngOriSiz = bytaryCpr(lngCprSiz - 1) * (2 ^ 24) _ + bytaryCpr(lngCprSiz - 2) * (2 ^ 16) _ + bytaryCpr(lngCprSiz - 3) * (2 ^ 8) _ + bytaryCpr(lngCprSiz - 4) ReDim Preserve bytaryCpr(lngCprSiz - 5) 'Cut of the original size value ReDim bytaryOri(lngOriSiz - 1) If lngfncUcp(bytaryOri(0), lngOriSiz, bytaryCpr(0), lngCprSiz) = SUCCESS Then strOriPth = Left(strargFilPth, Len(strargFilPth) - Len(strFilExt)) Open strOriPth For Binary Access Write As #1 Put #1, , bytaryOri() Close #1 Else MsgBox "Uncompression error" End If Erase bytaryCpr Erase bytaryOri End Sub Public Property Get lngPercentSmaller() As Long lngPercentSmaller = lngpvtPcnSml End Property zlib-1.2.11.dfsg/old/descrip.mms0000644000175000017500000000301106103507075016255 0ustar brooniebroonie# descrip.mms: MMS description file for building zlib on VMS # written by Martin P.J. Zinser cc_defs = c_deb = .ifdef __DECC__ pref = /prefix=all .endif OBJS = adler32.obj, compress.obj, crc32.obj, gzio.obj, uncompr.obj,\ deflate.obj, trees.obj, zutil.obj, inflate.obj, infblock.obj,\ inftrees.obj, infcodes.obj, infutil.obj, inffast.obj CFLAGS= $(C_DEB) $(CC_DEFS) $(PREF) all : example.exe minigzip.exe @ write sys$output " Example applications available" libz.olb : libz.olb($(OBJS)) @ write sys$output " libz available" example.exe : example.obj libz.olb link example,libz.olb/lib minigzip.exe : minigzip.obj libz.olb link minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib clean : delete *.obj;*,libz.olb;* # Other dependencies. adler32.obj : zutil.h zlib.h zconf.h compress.obj : zlib.h zconf.h crc32.obj : zutil.h zlib.h zconf.h deflate.obj : deflate.h zutil.h zlib.h zconf.h example.obj : zlib.h zconf.h gzio.obj : zutil.h zlib.h zconf.h infblock.obj : zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h infcodes.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h infcodes.h inffast.h inffast.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h inffast.h inflate.obj : zutil.h zlib.h zconf.h infblock.h inftrees.obj : zutil.h zlib.h zconf.h inftrees.h infutil.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h minigzip.obj : zlib.h zconf.h trees.obj : deflate.h zutil.h zlib.h zconf.h uncompr.obj : zlib.h zconf.h zutil.obj : zutil.h zlib.h zconf.h zlib-1.2.11.dfsg/old/README0000644000175000017500000000020510122052133014752 0ustar brooniebroonieThis directory contains files that have not been updated for zlib 1.2.x (Volunteers are encouraged to help clean this up. Thanks.)