rinetd/0040755000031000004540000000000007646657136011370 5ustar boutelldevrinetd/getopt.h0100740000031000004540000001070706662673677013047 0ustar boutelldev/* THIS IS HERE FOR WIN32's BENEFIT ONLY. */ /* Declarations for getopt. Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _GETOPT_H #define _GETOPT_H 1 #ifdef __cplusplus extern "C" { #endif /* For communication from `getopt' to the caller. When `getopt' finds an option that takes an argument, the argument value is returned here. Also, when `ordering' is RETURN_IN_ORDER, each non-option ARGV-element is returned here. */ extern char *optarg; /* Index in ARGV of the next element to be scanned. This is used for communication to and from the caller and for communication between successive calls to `getopt'. On entry to `getopt', zero means this is the first call; initialize. When `getopt' returns EOF, this is the index of the first of the non-option elements that the caller should itself scan. Otherwise, `optind' communicates from one call to the next how much of ARGV has been scanned so far. */ extern int optind; /* Callers store zero here to inhibit the error message `getopt' prints for unrecognized options. */ extern int opterr; /* Set to an option character which was unrecognized. */ extern int optopt; /* Describe the long-named options requested by the application. The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector of `struct option' terminated by an element containing a name which is zero. The field `has_arg' is: no_argument (or 0) if the option does not take an argument, required_argument (or 1) if the option requires an argument, optional_argument (or 2) if the option takes an optional argument. If the field `flag' is not NULL, it points to a variable that is set to the value given in the field `val' when the option is found, but left unchanged if the option is not found. To have a long-named option do something other than set an `int' to a compiled-in constant, such as set a value from `optarg', set the option's `flag' field to zero and its `val' field to a nonzero value (the equivalent single-letter option character, if there is one). For long options that have a zero `flag' field, `getopt' returns the contents of the `val' field. */ struct option { #if __STDC__ const char *name; #else char *name; #endif /* has_arg can't be an enum because some compilers complain about type mismatches in all the code that assumes it is an int. */ int has_arg; int *flag; int val; }; /* Names for the values of the `has_arg' field of `struct option'. */ #define no_argument 0 #define required_argument 1 #define optional_argument 2 #if __STDC__ || defined(PROTO) #if defined(__GNU_LIBRARY__) /* Many other libraries have conflicting prototypes for getopt, with differences in the consts, in stdlib.h. To avoid compilation errors, only prototype getopt for the GNU C library. */ extern int getopt (int argc, char *const *argv, const char *shortopts); #endif /* not __GNU_LIBRARY__ */ extern int getopt_long (int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind); extern int getopt_long_only (int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind); /* Internal only. Users should not call this directly. */ extern int _getopt_internal (int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind, int long_only); #else /* not __STDC__ */ extern int getopt (); extern int getopt_long (); extern int getopt_long_only (); extern int _getopt_internal (); #endif /* not __STDC__ */ #ifdef __cplusplus } #endif #endif /* _GETOPT_H */ rinetd/rinetd.c0100740000031000004540000010516507646657033013017 0ustar boutelldev#define VERSION "0.62" #ifdef WIN32 #include #include #include "getopt.h" #else #include #include #include #include #include #include #include #define INVALID_SOCKET (-1) #include #endif /* WIN32 */ #include #include #include #include #include #include #include #ifndef WIN32 /* Windows sockets compatibility defines */ #define INVALID_SOCKET (-1) #define SOCKET_ERROR (-1) int closesocket(int s); int closesocket(int s) { return close(s); } #define ioctlsocket ioctl #define MAKEWORD(a, b) #define WSAStartup(a, b) (0) #define WSACleanup() #ifdef __MAC__ /* The constants for these are a little screwy in the prelinked MSL GUSI lib and we can't rebuild it, so roll with it */ #define WSAEWOULDBLOCK EWOULDBLOCK #define WSAEAGAIN EAGAIN #define WSAEINPROGRESS EINPROGRESS #else #define WSAEWOULDBLOCK EWOULDBLOCK #define WSAEAGAIN EAGAIN #define WSAEINPROGRESS EINPROGRESS #endif /* __MAC__ */ #define WSAEINTR EINTR #define SOCKET int #define GetLastError() (errno) typedef struct { int dummy; } WSADATA; void Sleep(long ms); void Sleep(long ms) { struct timeval tv; tv.tv_sec = ms / 1000; tv.tv_usec = ms * 1000; select(0, 0, 0, 0, &tv); } #else /* WIN32 doesn't really have WSAEAGAIN */ #ifndef WSAEAGAIN #define WSAEAGAIN WSAEWOULDBLOCK #endif #endif /* WIN32 */ #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif #ifdef DEBUG #define PERROR perror #else #define PERROR(x) #endif /* DEBUG */ /* We've got to get FIONBIO from somewhere. Try the Solaris location if it isn't defined yet by the above includes. */ #ifndef FIONBIO #include #endif /* FIONBIO */ #include "match.h" SOCKET *seFds = 0; /* In network order, for network purposes */ struct in_addr *seLocalAddrs = 0; unsigned short *seLocalPorts = 0; /* In ASCII and local byte order, for logging purposes */ char **seFromHosts; int *seFromPorts; char **seToHosts; int *seToPorts; /* Offsets into list of allow and deny rules. Any rules prior to globalAllowRules and globalDenyRules are global rules. */ int *seAllowRules = 0; int *seAllowRulesTotal = 0; int globalAllowRules = 0; int *seDenyRules = 0; int *seDenyRulesTotal = 0; int globalDenyRules = 0; SOCKET *reFds = 0; SOCKET *loFds = 0; unsigned char *reAddresses = 0; int *coInputRPos = 0; int *coInputWPos = 0; int *coOutputRPos = 0; int *coOutputWPos = 0; int *coClosed = 0; int *coClosing = 0; int *reClosed = 0; int *loClosed = 0; int *coBytesInput = 0; int *coBytesOutput = 0; int *coLog = 0; int *coSe = 0; char **coInput = 0; char **coOutput = 0; char **allowRules = 0; char **denyRules = 0; int *denyRulesFor = 0; int seTotal = 0; int coTotal = 0; int allowRulesTotal = 0; int denyRulesTotal = 0; int maxfd = 0; char *logFileName = 0; char *pidLogFileName = 0; int logFormatCommon = 0; FILE *logFile = 0; /* If 'newsize' bytes can be allocated, *data is set to point to them, the previous data is copied, and 1 is returned. If 'size' bytes cannot be allocated, *data is UNCHANGED, and 0 is returned. */ #define SAFE_REALLOC(x, y, z) safeRealloc((void **) (x), (y), (z)) int safeRealloc(void **data, int oldsize, int newsize); /* se: (se)rver sockets re: (re)mote sockets lo: (lo)cal sockets (being redirected to) co: connections */ #define bufferSpace 1024 void readConfiguration(); /* Signal handlers */ void plumber(int s); void hup(int s); void term(int s); void initArrays(void); void RegisterPID(void); void selectLoop(void); void log(int i, int coSe, int result); int getAddress(char *host, struct in_addr *iaddr); char *logMessages[] = { "done-local-closed", "done-remote-closed", "accept-failed -", 0, "local-socket-failed -", 0, "local-bind-failed -", 0, "local-connect-failed -", 0, "not-allowed", 0, "denied", 0 }; #define logDone 0 #define logAcceptFailed 2 #define logLocalSocketFailed 4 #define logLocalBindFailed 6 #define logLocalConnectFailed 8 #define logNotAllowed 10 #define logDenied 12 #define logLocalClosedFirst 0 #define logRemoteClosedFirst 1 /* Option parsing */ typedef struct _rinetd_options RinetdOptions; struct _rinetd_options { char *conf_file; }; RinetdOptions options = { "/etc/rinetd.conf" }; int readArgs (int argc, char **argv, RinetdOptions *options); int main(int argc, char *argv[]) { WSADATA wsaData; int result = WSAStartup(MAKEWORD(1, 1), &wsaData); if (result != 0) { fprintf(stderr, "Your computer was not connected " "to the Internet at the time that " "this program was launched, or you " "do not have a 32-bit " "connection to the Internet."); exit(1); } readArgs(argc, argv, &options); #ifndef WIN32 #ifndef DEBUG if (!fork()) { if (!fork()) { #endif /* DEBUG */ signal(SIGPIPE, plumber); signal(SIGHUP, hup); #endif /* WIN32 */ signal(SIGTERM, term); initArrays(); readConfiguration(); RegisterPID(); selectLoop(); #ifndef WIN32 #ifndef DEBUG } else { exit(0); } } else { exit(0); } #endif /* DEBUG */ #endif /* WIN32 */ return 0; } int getConfLine(FILE *in, char *line, int space, int *lnum); int patternBad(char *pattern); void readConfiguration(void) { FILE *in; char line[16384]; int lnum = 0; int i; int ai; int di; if (seFds) { /* Close existing server sockets. */ for (i = 0; (i < seTotal); i++) { if (seFds[i] != -1) { closesocket(seFds[i]); free(seFromHosts[i]); free(seToHosts[i]); } } /* Free memory associated with previous set. */ free(seFds); free(seLocalAddrs); free(seLocalPorts); free(seFromHosts); free(seFromPorts); free(seToHosts); free(seToPorts); free(seAllowRules); free(seDenyRules); free(seAllowRulesTotal); free(seDenyRulesTotal); } seTotal = 0; if (allowRules) { /* Forget existing allow rules. */ for (i = 0; (i < allowRulesTotal); i++) { free(allowRules[i]); } /* Free memory associated with previous set. */ free(allowRules); globalAllowRules = 0; } allowRulesTotal = 0; if (denyRules) { /* Forget existing deny rules. */ for (i = 0; (i < denyRulesTotal); i++) { free(denyRules[i]); } /* Free memory associated with previous set. */ free(denyRules); globalDenyRules = 0; } denyRulesTotal = 0; if (logFileName) { free(logFileName); logFileName = 0; } if (pidLogFileName) { free(pidLogFileName); pidLogFileName = 0; } /* 1. Count the non-comment lines of each type and allocate space for the data. */ in = fopen(options.conf_file, "r"); if (!in) { fprintf(stderr, "rinetd: can't open %s\n", options.conf_file); exit(1); } while (1) { char *t = 0; if (!getConfLine(in, line, sizeof(line), &lnum)) { break; } t = strtok(line, " \t\r\n"); if (!strcmp(t, "logfile")) { continue; } else if (!strcmp(t, "pidlogfile")) { continue; } else if (!strcmp(t, "logcommon")) { continue; } else if (!strcmp(t, "allow")) { allowRulesTotal++; } else if (!strcmp(t, "deny")) { denyRulesTotal++; } else { /* A regular forwarding rule */ seTotal++; } } fclose(in); seFds = (SOCKET *) malloc(sizeof(int) * seTotal); if (!seFds) { goto lowMemory; } seLocalAddrs = (struct in_addr *) malloc(sizeof(struct in_addr) * seTotal); if (!seLocalAddrs) { goto lowMemory; } seLocalPorts = (unsigned short *) malloc(sizeof(unsigned short) * seTotal); if (!seLocalPorts) { goto lowMemory; } seFromHosts = (char **) malloc(sizeof(char *) * seTotal); if (!seFromHosts) { goto lowMemory; } seFromPorts = (int *) malloc(sizeof(int) * seTotal); if (!seFromPorts) { goto lowMemory; } seToHosts = (char **) malloc(sizeof(char *) * seTotal); if (!seToHosts) { goto lowMemory; } seToPorts = (int *) malloc(sizeof(int) * seTotal); if (!seToPorts) { goto lowMemory; } allowRules = (char **) malloc(sizeof(char *) * allowRulesTotal); if (!allowRules) { goto lowMemory; } denyRules = (char **) malloc(sizeof(char *) * denyRulesTotal); if (!denyRules) { goto lowMemory; } seAllowRules = (int *) malloc(sizeof(int) * seTotal); if (!seAllowRules) { goto lowMemory; } seAllowRulesTotal = (int *) malloc(sizeof(int) * seTotal); if (!seAllowRulesTotal) { goto lowMemory; } seDenyRules = (int *) malloc(sizeof(int) * seTotal); if (!seDenyRules) { goto lowMemory; } seDenyRulesTotal = (int *) malloc(sizeof(int) * seTotal); if (!seDenyRulesTotal) { goto lowMemory; } /* 2. Make a second pass to configure them. */ i = 0; ai = 0; di = 0; lnum = 0; in = fopen(options.conf_file, "r"); if (!in) { goto lowMemory; } if (seTotal > 0) { seAllowRulesTotal[i] = 0; seDenyRulesTotal[i] = 0; } while (1) { char *bindAddress; unsigned short bindPort; char *connectAddress; char *bindPortS; char *connectPortS; unsigned short connectPort; struct in_addr iaddr; struct sockaddr_in saddr; struct servent *service; int j; if (!getConfLine(in, line, sizeof(line), &lnum)) { break; } bindAddress = strtok(line, " \t\r\n"); if (!bindAddress) { fprintf(stderr, "rinetd: no bind address specified " "on line %d.\n", lnum); continue; } if (!strcmp(bindAddress, "allow")) { char *pattern = strtok(0, " \t\r\n"); if (!pattern) { fprintf(stderr, "rinetd: nothing to allow " "specified on line %d.\n", lnum); continue; } if (patternBad(pattern)) { fprintf(stderr, "rinetd: illegal allow or " "deny pattern. Only digits, ., and\n" "the ? and * wild cards are allowed. " "For performance reasons, rinetd\n" "does not look up complete " "host names.\n"); continue; } allowRules[ai] = malloc(strlen(pattern) + 1); if (!allowRules[ai]) { goto lowMemory; } strcpy(allowRules[ai], pattern); if (i > 0) { if (seAllowRulesTotal[i - 1] == 0) { seAllowRules[i - 1] = ai; } seAllowRulesTotal[i - 1]++; } else { globalAllowRules++; } ai++; } else if (!strcmp(bindAddress, "deny")) { char *pattern = strtok(0, " \t\r\n"); if (!pattern) { fprintf(stderr, "rinetd: nothing to deny " "specified on line %d.\n", lnum); continue; } denyRules[di] = malloc(strlen(pattern) + 1); if (!denyRules[di]) { goto lowMemory; } strcpy(denyRules[di], pattern); if (i > 0) { if (seDenyRulesTotal[i - 1] == 0) { seDenyRules[i - 1] = di; } seDenyRulesTotal[i - 1]++; } else { globalDenyRules++; } di++; } else if (!strcmp(bindAddress, "logfile")) { char *nt = strtok(0, " \t\r\n"); if (!nt) { fprintf(stderr, "rinetd: no log file name " "specified on line %d.\n", lnum); continue; } logFileName = malloc(strlen(nt) + 1); if (!logFileName) { goto lowMemory; } strcpy(logFileName, nt); } else if (!strcmp(bindAddress, "pidlogfile")) { char *nt = strtok(0, " \t\r\n"); if (!nt) { fprintf(stderr, "rinetd: no PID log file name " "specified on line %d.\n", lnum); continue; } pidLogFileName = malloc(strlen(nt) + 1); if (!pidLogFileName) { goto lowMemory; } strcpy(pidLogFileName, nt); } else if (!strcmp(bindAddress, "logcommon")) { logFormatCommon = 1; } else { /* A regular forwarding rule. */ bindPortS = strtok(0, " \t\r\n"); if (!bindPortS) { fprintf(stderr, "rinetd: no bind port " "specified on line %d.\n", lnum); continue; } service = getservbyname(bindPortS, "tcp"); if (service) { bindPort = ntohs(service->s_port); } else { bindPort = atoi(bindPortS); } if ((bindPort == 0) || (bindPort >= 65536)) { fprintf(stderr, "rinetd: bind port missing " "or out of range on line %d.\n", lnum); continue; } connectAddress = strtok(0, " \t\r\n"); if (!connectAddress) { fprintf(stderr, "rinetd: no connect address " "specified on line %d.\n", lnum); continue; } connectPortS = strtok(0, " \t\r\n"); if (!connectPortS) { fprintf(stderr, "rinetd: no connect port " "specified on line %d.\n", lnum); continue; } service = getservbyname(connectPortS, "tcp"); if (service) { connectPort = ntohs(service->s_port); } else { connectPort = atoi(connectPortS); } if ((connectPort == 0) || (connectPort >= 65536)) { fprintf(stderr, "rinetd: bind port missing " "or out of range on line %d.\n", lnum); continue; } /* Turn all of this stuff into reasonable addresses */ if (!getAddress(bindAddress, &iaddr)) { fprintf(stderr, "rinetd: host %s could not be " "resolved on line %d.\n", bindAddress, lnum); continue; } /* Make a server socket */ seFds[i] = socket(PF_INET, SOCK_STREAM, 0); if (seFds[i] == INVALID_SOCKET) { fprintf(stderr, "rinetd: couldn't create " "server socket!\n"); seFds[i] = -1; continue; } #ifndef WIN32 if (seFds[i] > maxfd) { maxfd = seFds[i]; } #endif saddr.sin_family = AF_INET; memcpy(&saddr.sin_addr, &iaddr, sizeof(iaddr)); saddr.sin_port = htons(bindPort); j = 1; setsockopt(seFds[i], SOL_SOCKET, SO_REUSEADDR, (const char *) &j, sizeof(j)); if (bind(seFds[i], (struct sockaddr *) &saddr, sizeof(saddr)) == SOCKET_ERROR) { /* Warn -- don't exit. */ fprintf(stderr, "rinetd: couldn't bind to " "address %s port %d\n", bindAddress, bindPort); closesocket(seFds[i]); seFds[i] = INVALID_SOCKET; continue; } if (listen(seFds[i], 5) == SOCKET_ERROR) { /* Warn -- don't exit. */ fprintf(stderr, "rinetd: couldn't listen to " "address %s port %d\n", bindAddress, bindPort); closesocket(seFds[i]); seFds[i] = INVALID_SOCKET; continue; } ioctlsocket(seFds[i], FIONBIO, &j); if (!getAddress(connectAddress, &iaddr)) { /* Warn -- don't exit. */ fprintf(stderr, "rinetd: host %s could not be " "resolved on line %d.\n", bindAddress, lnum); closesocket(seFds[i]); seFds[i] = INVALID_SOCKET; continue; } seLocalAddrs[i] = iaddr; seLocalPorts[i] = htons(connectPort); seFromHosts[i] = malloc(strlen(bindAddress) + 1); if (!seFromHosts[i]) { goto lowMemory; } strcpy(seFromHosts[i], bindAddress); seFromPorts[i] = bindPort; seToHosts[i] = malloc(strlen(connectAddress) + 1); if (!seToHosts[i]) { goto lowMemory; } strcpy(seToHosts[i], connectAddress); seToPorts[i] = connectPort; i++; if (i < seTotal) { seAllowRulesTotal[i] = 0; seDenyRulesTotal[i] = 0; } } } /* Open the log file */ if (logFile) { fclose(logFile); logFile = 0; } if (logFileName) { logFile = fopen(logFileName, "a"); if (!logFile) { fprintf(stderr, "rinetd: could not open %s to append.\n", logFileName); } } return; lowMemory: fprintf(stderr, "rinetd: not enough memory to start rinetd.\n"); exit(1); } int getConfLine(FILE *in, char *line, int space, int *lnum) { char *p; while (1) { if (!fgets(line, space, in)) { return 0; } p = line; while (isspace(*p)) { p++; } if (!(*p)) { /* Blank lines are OK */ continue; } if (*p == '#') { /* Comment lines are also OK */ continue; } (*lnum)++; return 1; } } void initArrays(void) { int j; coTotal = 64; reFds = (SOCKET *) malloc(sizeof(int) * coTotal); loFds = (SOCKET *) malloc(sizeof(int) * coTotal); coInputRPos = (int *) malloc(sizeof(int) * coTotal); coInputWPos = (int *) malloc(sizeof(int) * coTotal); coOutputRPos = (int *) malloc(sizeof(int) * coTotal); coOutputWPos = (int *) malloc(sizeof(int) * coTotal); coClosed = (int *) malloc(sizeof(int) * coTotal); coClosing = (int *) malloc(sizeof(int) * coTotal); reClosed = (int *) malloc(sizeof(int) * coTotal); loClosed = (int *) malloc(sizeof(int) * coTotal); coInput = (char **) malloc(sizeof(char *) * coTotal); coOutput = (char **) malloc(sizeof(char *) * coTotal); coBytesInput = (int *) malloc(sizeof(int) * coTotal); coBytesOutput = (int *) malloc(sizeof(int) * coTotal); reAddresses = (unsigned char *) malloc(coTotal * 4); coLog = (int *) malloc(sizeof(int) * coTotal); coSe = (int *) malloc(sizeof(int) * coTotal); if ((!reFds) || (!loFds) || (!coInputRPos) || (!coInputWPos) || (!coOutputRPos) || (!coOutputWPos) || (!coClosed) || (!coClosing) || (!reClosed) || (!loClosed) || (!coInput) || (!coOutput) || (!coBytesInput) || (!coBytesOutput) || (!coLog) || (!coSe) || (!reAddresses)) { fprintf(stderr, "rinetd: not enough memory to start rinetd.\n"); exit(1); } for (j = 0; (j < coTotal); j++) { coClosed[j] = 1; coInput[j] = (char *) malloc(sizeof(char) * bufferSpace); coOutput[j] = (char *) malloc(sizeof(char) * bufferSpace); if ((!coInput[j]) || (!coOutput[j])) { fprintf(stderr, "rinetd: not enough memory to start " "rinetd.\n"); exit(1); } } } void selectPass(void); void selectLoop(void) { while (1) { selectPass(); } } void handleRemoteWrite(int i); void handleRemoteRead(int i); void handleLocalWrite(int i); void handleLocalRead(int i); void handleCloseFromLocal(int i); void handleCloseFromRemote(int i); void handleAccept(int i); void openLocalFd(int se, int i); int getAddress(char *host, struct in_addr *iaddr); void selectPass(void) { int i; fd_set readfds, writefds; FD_ZERO(&readfds); FD_ZERO(&writefds); /* Server sockets */ for (i = 0; (i < seTotal); i++) { if (seFds[i] != INVALID_SOCKET) { FD_SET(seFds[i], &readfds); } } /* Connection sockets */ for (i = 0; (i < coTotal); i++) { if (coClosed[i]) { continue; } if (coClosing[i]) { if (!reClosed[i]) { FD_SET(reFds[i], &writefds); } if (!loClosed[i]) { FD_SET(loFds[i], &writefds); } } /* Get more input if we have room for it */ if ((!reClosed[i]) && (coInputRPos[i] < bufferSpace)) { FD_SET(reFds[i], &readfds); } /* Send more output if we have any */ if ((!reClosed[i]) && (coOutputWPos[i] < coOutputRPos[i])) { FD_SET(reFds[i], &writefds); } /* Accept more output from the local server if there's room */ if ((!loClosed[i]) && (coOutputRPos[i] < bufferSpace)) { FD_SET(loFds[i], &readfds); } /* Send more input to the local server if we have any */ if ((!loClosed[i]) && (coInputWPos[i] < coInputRPos[i])) { FD_SET(loFds[i], &writefds); } } select(maxfd + 1, &readfds, &writefds, 0, 0); for (i = 0; (i < seTotal); i++) { if (seFds[i] != -1) { if (FD_ISSET(seFds[i], &readfds)) { handleAccept(i); } } } for (i = 0; (i < coTotal); i++) { if (coClosed[i]) { continue; } if (!reClosed[i]) { if (FD_ISSET(reFds[i], &readfds)) { handleRemoteRead(i); } } if (!reClosed[i]) { if (FD_ISSET(reFds[i], &writefds)) { handleRemoteWrite(i); } } if (!loClosed[i]) { if (FD_ISSET(loFds[i], &readfds)) { handleLocalRead(i); } } if (!loClosed[i]) { if (FD_ISSET(loFds[i], &writefds)) { handleLocalWrite(i); } } if (loClosed[i] && reClosed[i]) { coClosed[i] = 1; } } } void handleRemoteRead(int i) { int got; if (bufferSpace == coInputRPos[i]) { return; } got = recv(reFds[i], coInput[i] + coInputRPos[i], bufferSpace - coInputRPos[i], 0); if (got == 0) { /* Prepare for closing */ handleCloseFromRemote(i); return; } if (got < 0) { if (GetLastError() == WSAEWOULDBLOCK) { return; } if (GetLastError() == WSAEINPROGRESS) { return; } handleCloseFromRemote(i); return; } coBytesInput[i] += got; coInputRPos[i] += got; } void handleRemoteWrite(int i) { int got; if (coClosing[i] && (coOutputWPos[i] == coOutputRPos[i])) { reClosed[i] = 1; coClosed[i] = 1; PERROR("rinetd: local closed and no more output"); log(i, coSe[i], logDone | coLog[i]); closesocket(reFds[i]); return; } got = send(reFds[i], coOutput[i] + coOutputWPos[i], coOutputRPos[i] - coOutputWPos[i], 0); if (got < 0) { if (GetLastError() == WSAEWOULDBLOCK) { return; } if (GetLastError() == WSAEINPROGRESS) { return; } handleCloseFromRemote(i); return; } coOutputWPos[i] += got; if (coOutputWPos[i] == coOutputRPos[i]) { coOutputWPos[i] = 0; coOutputRPos[i] = 0; } coBytesOutput[i] += got; } void handleLocalRead(int i) { int got; if (bufferSpace == coOutputRPos[i]) { return; } got = recv(loFds[i], coOutput[i] + coOutputRPos[i], bufferSpace - coOutputRPos[i], 0); if (got == 0) { handleCloseFromLocal(i); return; } if (got < 0) { if (GetLastError() == WSAEWOULDBLOCK) { return; } if (GetLastError() == WSAEINPROGRESS) { return; } handleCloseFromLocal(i); return; } coOutputRPos[i] += got; } void handleLocalWrite(int i) { int got; if (coClosing[i] && (coInputWPos[i] == coInputRPos[i])) { loClosed[i] = 1; coClosed[i] = 1; PERROR("remote closed and no more input"); log(i, coSe[i], logDone | coLog[i]); closesocket(loFds[i]); return; } got = send(loFds[i], coInput[i] + coInputWPos[i], coInputRPos[i] - coInputWPos[i], 0); if (got < 0) { if (GetLastError() == WSAEWOULDBLOCK) { return; } if (GetLastError() == WSAEINPROGRESS) { return; } handleCloseFromLocal(i); return; } coInputWPos[i] += got; if (coInputWPos[i] == coInputRPos[i]) { coInputWPos[i] = 0; coInputRPos[i] = 0; } } void handleCloseFromLocal(int i) { int arg; coClosing[i] = 1; /* The local end fizzled out, so make sure we're all done with that */ PERROR("close from local"); closesocket(loFds[i]); loClosed[i] = 1; if (!reClosed[i]) { #ifndef LINUX #ifndef WIN32 /* Now set up the remote end for a polite closing */ /* Request a low-water mark equal to the entire output buffer, so the next write notification tells us for sure that we can close the socket. */ arg = 1024; setsockopt(reFds[i], SOL_SOCKET, SO_SNDLOWAT, &arg, sizeof(arg)); #endif /* WIN32 */ #endif /* LINUX */ coLog[i] = logLocalClosedFirst; } } void handleCloseFromRemote(int i) { int arg; coClosing[i] = 1; /* The remote end fizzled out, so make sure we're all done with that */ PERROR("close from remote"); closesocket(reFds[i]); reClosed[i] = 1; if (!loClosed[i]) { #ifndef LINUX #ifndef WIN32 /* Now set up the local end for a polite closing */ /* Request a low-water mark equal to the entire output buffer, so the next write notification tells us for sure that we can close the socket. */ arg = 1024; setsockopt(loFds[i], SOL_SOCKET, SO_SNDLOWAT, &arg, sizeof(arg)); #endif /* WIN32 */ #endif /* LINUX */ loClosed[i] = 0; coLog[i] = logRemoteClosedFirst; } } void refuse(int index, int logCode); void handleAccept(int i) { struct sockaddr addr; struct sockaddr_in *sin; unsigned char address[4]; char addressText[64]; int j; int addrlen; int index = -1; int o; SOCKET nfd; addrlen = sizeof(addr); nfd = accept(seFds[i], &addr, &addrlen); if (nfd == INVALID_SOCKET) { log(-1, i, logAcceptFailed); return; } #ifndef WIN32 if (nfd > maxfd) { maxfd = nfd; } #endif /* WIN32 */ j = 1; ioctlsocket(nfd, FIONBIO, &j); j = 0; #ifndef WIN32 setsockopt(nfd, SOL_SOCKET, SO_LINGER, &j, sizeof(j)); #endif for (j = 0; (j < coTotal); j++) { if (coClosed[j]) { index = j; break; } } if (index == -1) { o = coTotal; coTotal *= 2; if (!SAFE_REALLOC(&reFds, sizeof(int) * o, sizeof(SOCKET) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&loFds, sizeof(int) * o, sizeof(SOCKET) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coInputRPos, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coInputWPos, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coOutputRPos, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coOutputWPos, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coClosed, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coClosing, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&reClosed, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&loClosed, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coLog, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coSe, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coBytesInput, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&reAddresses, 4 * o, 4 * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coBytesOutput, sizeof(int) * o, sizeof(int) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coInput, sizeof(char *) * o, sizeof(char *) * coTotal)) { goto shortage; } if (!SAFE_REALLOC(&coOutput, sizeof(char *) * o, sizeof(char *) * coTotal)) { goto shortage; } for (j = o; (j < coTotal); j++) { coClosed[j] = 1; coInput[j] = (char *) malloc(sizeof(char) * bufferSpace); if (!coInput[j]) { int k; for (k = o; (k < j); k++) { free(coInput[k]); free(coOutput[k]); } goto shortage; } coOutput[j] = (char *) malloc(sizeof(char) * bufferSpace); if (!coOutput[j]) { int k; free(coInput[j]); for (k = o; (k < j); k++) { free(coInput[k]); free(coOutput[k]); } goto shortage; } } index = o; } coInputRPos[index] = 0; coInputWPos[index] = 0; coOutputRPos[index] = 0; coOutputWPos[index] = 0; coClosed[index] = 0; coClosing[index] = 0; reClosed[index] = 0; loClosed[index] = 0; reFds[index] = nfd; coBytesInput[index] = 0; coBytesOutput[index] = 0; coLog[index] = 0; coSe[index] = i; sin = (struct sockaddr_in *) &addr; memcpy(address, &(sin->sin_addr.s_addr), 4); memcpy(reAddresses + index * 4, address, 4); /* Now, do we want to accept this connection? Format it for comparison to a pattern. */ sprintf(addressText, "%d.%d.%d.%d", address[0], address[1], address[2], address[3]); /* 1. Check global allow rules. If there are no global allow rules, it's presumed OK at this step. If there are any, and it doesn't match at least one, kick it out. */ if (globalAllowRules) { int good = 0; for (j = 0; (j < globalAllowRules); j++) { if (match(addressText, allowRules[j])) { good = 1; break; } } if (!good) { refuse(index, logNotAllowed); return; } } /* 2. Check global deny rules. If it matches any of the global deny rules, kick it out. */ if (globalDenyRules) { for (j = 0; (j < globalDenyRules); j++) { if (match(addressText, denyRules[j])) { refuse(index, logDenied); } } } /* 3. Check allow rules specific to this forwarding rule. If there are none, it's OK. If there are any, it must match at least one. */ if (seAllowRulesTotal[i]) { int good = 0; for (j = 0; (j < seAllowRulesTotal[i]); j++) { if (match(addressText, allowRules[seAllowRules[i] + j])) { good = 1; break; } } if (!good) { refuse(index, logNotAllowed); return; } } /* 2. Check deny rules specific to this forwarding rule. If it matches any of the deny rules, kick it out. */ if (seDenyRulesTotal[i]) { for (j = 0; (j < seDenyRulesTotal[i]); j++) { if (match(addressText, denyRules[seDenyRules[i] + j])) { refuse(index, logDenied); } } } /* Now open a connection to the local server. This, too, is nonblocking. Why wait for anything when you don't have to? */ openLocalFd(i, index); return; shortage: fprintf(stderr, "rinetd: not enough memory to " "add slots. Currently %d slots.\n", o); /* Go back to the previous total number of slots */ coTotal = o; } void openLocalFd(int se, int i) { int j; struct sockaddr_in saddr; loFds[i] = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (loFds[i] == INVALID_SOCKET) { closesocket(reFds[i]); reClosed[i] = 1; loClosed[i] = 1; coClosed[i] = 1; log(i, coSe[i], logLocalSocketFailed); return; } #ifndef WIN32 if (loFds[i] > maxfd) { maxfd = loFds[i]; } #endif /* WIN32 */ /* Bind the local socket */ saddr.sin_family = AF_INET; saddr.sin_port = INADDR_ANY; saddr.sin_addr.s_addr = 0; if (bind(loFds[i], (struct sockaddr *) &saddr, sizeof(saddr)) == SOCKET_ERROR) { closesocket(loFds[i]); closesocket(reFds[i]); reClosed[i] = 1; loClosed[i] = 1; coClosed[i] = 1; log(i, coSe[i], logLocalBindFailed); return; } memset(&saddr, 0, sizeof(struct sockaddr_in)); saddr.sin_family = AF_INET; memcpy(&saddr.sin_addr, &seLocalAddrs[se], sizeof(struct in_addr)); saddr.sin_port = seLocalPorts[se]; #ifndef WIN32 #ifdef LINUX j = 0; setsockopt(loFds[i], SOL_SOCKET, SO_LINGER, &j, sizeof(j)); #else j = 1024; setsockopt(loFds[i], SOL_SOCKET, SO_SNDBUF, &j, sizeof(j)); #endif /* LINUX */ #endif /* WIN32 */ j = 1; ioctlsocket(loFds[i], FIONBIO, &j); if (connect(loFds[i], (struct sockaddr *)&saddr, sizeof(struct sockaddr_in)) == INVALID_SOCKET) { if ((GetLastError() != WSAEINPROGRESS) && (GetLastError() != WSAEWOULDBLOCK)) { PERROR("rinetd: connect"); closesocket(loFds[i]); closesocket(reFds[i]); reClosed[i] = 1; loClosed[i] = 1; coClosed[i] = 1; log(i, coSe[i], logLocalConnectFailed); return; } } } int getAddress(char *host, struct in_addr *iaddr) { char *p = host; int ishost = 0; while (*p) { if (!(isdigit(*p) || ((*p) == '.'))) { ishost = 1; break; } p++; } if (ishost) { struct hostent *h; h = gethostbyname(host); if (!h) { return 0; } memcpy( (void *) &iaddr->s_addr, (void *) h->h_addr, 4); return 1; } else { iaddr->s_addr = inet_addr(host); return 1; } } #ifndef WIN32 void plumber(int s) { /* Just reinstall */ signal(SIGPIPE, plumber); } void hup(int s) { /* Learn the new rules */ readConfiguration(); /* And reinstall the signal handler */ signal(SIGHUP, hup); } #endif /* WIN32 */ int safeRealloc(void **data, int oldsize, int newsize) { void *newData = malloc(newsize + 1); if (!newData) { return 0; } if (newsize < oldsize) { memcpy(newData, *data, newsize); } else { memcpy(newData, *data, oldsize); } *data = newData; return 1; } void RegisterPID(void) { FILE *pid_file; char *pid_file_name = "/var/run/rinetd.pid"; if (pidLogFileName) { pid_file_name = pidLogFileName; } /* add other systems with wherever they register processes */ #if defined(LINUX) pid_file = fopen(pid_file_name, "w"); if (pid_file == NULL) { /* non-fatal, non-Linux may lack /var/run... */ fprintf(stderr, "rinetd: Couldn't write to " "%s. PID was not logged.\n", pid_file_name); } else { /* error checking deliberately omitted */ fprintf(pid_file, "%d\n", getpid()); fclose(pid_file); } #endif /* LINUX */ } unsigned char nullAddress[4] = { 0, 0, 0, 0 }; struct tm *get_gmtoff(int *tz); void log(int i, int coSe, int result) { unsigned char *reAddress; int bytesOutput; int bytesInput; /* Bit of borrowing from Apache logging module here, thanks folks */ int timz; struct tm *t; char tstr[1024]; char sign; if (!log) { return; } t = get_gmtoff(&timz); sign = (timz < 0 ? '-' : '+'); if (timz < 0) { timz = -timz; } strftime(tstr, sizeof(tstr), "%d/%b/%Y:%H:%M:%S ", t); if (i != -1) { reAddress = reAddresses + i * 4; bytesOutput = coBytesOutput[i]; bytesInput = coBytesInput[i]; } else { reAddress = nullAddress; bytesOutput = 0; bytesInput = 0; } if (logFile) { if (logFormatCommon) { /* Fake a common log format log file in a way that most web analyzers can do something interesting with. We lie and say the protocol is HTTP because we don't want the web analyzer to reject the line. We also lie and claim success (code 200) because we don't want the web analyzer to ignore the line as an error and not analyze the "URL." We put a result message into our "URL" instead. The last field is an extra, giving the number of input bytes, after several placeholders meant to fill the positions frequently occupied by user agent, referrer, and server name information. */ fprintf(logFile, "%d.%d.%d.%d - - " "[%s %c%.2d%.2d] " "\"GET /rinetd-services/%s/%d/%s/%d/%s HTTP/1.0\" " "200 %d - - - %d\n", reAddress[0], reAddress[1], reAddress[2], reAddress[3], tstr, sign, timz / 60, timz % 60, seFromHosts[coSe], seFromPorts[coSe], seToHosts[coSe], seToPorts[coSe], logMessages[result], bytesOutput, bytesInput); } else { /* Write an rinetd-specific log entry with a less goofy format. */ fprintf(logFile, "%s\t%d.%d.%d.%d\t%s\t%d\t%s\t%d\t%d" "\t%d\t%s\n", tstr, reAddress[0], reAddress[1], reAddress[2], reAddress[3], seFromHosts[coSe], seFromPorts[coSe], seToHosts[coSe], seToPorts[coSe], bytesInput, bytesOutput, logMessages[result]); } } } int readArgs (int argc, char **argv, RinetdOptions *options) { int c; while (1) { int option_index = 0; static struct option long_options[] = { {"conf-file", 1, 0, 'c'}, {"help", 0, 0, 'h'}, {"version", 0, 0, 'v'}, {0, 0, 0, 0} }; c = getopt_long (argc, argv, "c:shv", long_options, &option_index); if (c == -1) { break; } switch (c) { case 'c': options->conf_file = malloc(strlen(optarg) + 1); if (!options->conf_file) { fprintf(stderr, "Not enough memory to " "launch rinetd.\n"); exit(1); } strcpy(options->conf_file, optarg); break; case 'h': printf("Usage: rinetd [OPTION]\n" " -c, --conf-file FILE read configuration " "from FILE\n" " -h, --help display this help\n" " -v, --version display version " "number\n\n"); printf("Most options are controlled through the\n" "configuration file. See the rinetd(8)\n" "manpage for more information.\n"); exit (0); case 'v': printf ("rinetd %s\n", VERSION); exit (0); case '?': default: exit (1); } } return 0; } /* get_gmtoff was borrowed from Apache. Thanks folks. */ struct tm *get_gmtoff(int *tz) { time_t tt = time(NULL); struct tm gmt; struct tm *t; int days, hours, minutes; /* Assume we are never more than 24 hours away. */ gmt = *gmtime(&tt); /* remember gmtime/localtime return ptr to static */ t = localtime(&tt); /* buffer... so be careful */ days = t->tm_yday - gmt.tm_yday; hours = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + t->tm_hour - gmt.tm_hour); minutes = hours * 60 + t->tm_min - gmt.tm_min; *tz = minutes; return t; } int patternBad(char *pattern) { char *p = pattern; while (*p) { if (isdigit(*p) || ((*p) == '?') || ((*p) == '*') || ((*p) == '.')) { p++; } return 0; } return 1; } void refuse(int index, int logCode) { closesocket(reFds[index]); reClosed[index] = 1; loClosed[index] = 1; coClosed[index] = 1; log(index, coSe[index], logCode); } void term(int s) { /* Obey the request, but first flush the log */ if (logFile) { fclose(logFile); } exit(0); } rinetd/CHANGES0100644000031000004540000000402407646345325012352 0ustar boutelldevVersion 0.1: original version. Version 0.2: fixed bug when several reads are necessary on one end or the other before a write flushes them. Fixed bug which threw away data not yet sent to the other side on close, when running under Linux. Fixed associated bugs that probably affected other operating systems as well. Fixed bug causing long, perhaps indefinite pauses when a possible connection to a server socket went away before the accept() call, resulting in a blocking call. Version 0.3: fixed additional bugs relating to the code previously used only by non-Linux OSes. This should fix problems such as connections not going away when they should or connections being mysteriously closed. Most of that code is now used by Linux also, so it is likely that rinetd is much closer to bug-free on non-Linux platforms. Of course, I don't actually have any to play with it on. Version 0.4: added support for kill -1 (SIGHUP) and specification of service names instead of port numbers. Removed calls to realloc(), replacing them with code that should fail gracefully without crashing the program or breaking existing connections when another application is hogging memory. Version 0.5: added logging in both tab-delimited and web-server-style formats. No longer exits if an individual configuration file line generates an error. Added allow and deny rules. Added -c command line option to specify a configuration file. Version 0.51: fixed failure to check for an open log file before writing log entries. Version 0.52: documentation added regarding the ability to bind to all IP addresses, if desired, using the special address 0.0.0.0. Version 0.6: ported to Win32. Various compatibility fixes were made and some minor oversights without functional consequences were corrected. Version 0.61: fixed a bug in 0.6 which completely broke rinetd under Linux. Oops. Version 0.62: fixed a potential buffer overrun; prior versions failed to reallocate one of the arrays correctly when reallocating memory to accommodate more connections. Thanks to Sam Hocevar. rinetd/rinetd.80100644000031000004540000001543207646657060012744 0ustar boutelldev.\" Copyright (c) 1997, 1998, 1999, Thomas Boutell and Boutell.Com, Inc. .\" This software is released for free use under the terms of .\" the GNU Public License, version 2 or higher. .\" .Dd February 18, 1999 .Dt RINETD 8 .Os LINUX .Sh NAME .Nm rinetd .Nd internet .Dq redirection server .Sh SYNOPSIS .Nm /usr/sbin/rinetd .Sh VERSION Version 0.62, 04/14/2003. .Sh DESCRIPTION .Nm rinetd redirects TCP connections from one IP address and port to another. rinetd is a single-process server which handles any number of connections to the address/port pairs specified in the file /etc/rinetd.conf. Since rinetd runs as a single process using nonblocking I/O, it is able to redirect a large number of connections without a severe impact on the machine. This makes it practical to run TCP services on machines inside an IP masquerading firewall. rinetd does not redirect FTP, because FTP requires more than one socket. .Pp rinetd is typically launched at boot time, using the following syntax: .Pp /usr/sbin/rinetd .Pp The configuration file is found in the file /etc/rinetd.conf, unless another file is specified using the -c command line option. .Sh FORWARDING RULES Most entries in the configuration file are forwarding rules. The format of a forwarding rule is as follows: .Pp bindaddress bindport connectaddress connectport .Pp For example: .Pp 206.125.69.81 80 10.1.1.2 80 .Pp Would redirect all connections to port 80 of the "real" IP address 206.125.69.81, which could be a virtual interface, through rinetd to port 80 of the address 10.1.1.2, which would typically be a machine on the inside of a firewall which has no direct routing to the outside world. .Pp Although responding on individual interfaces rather than on all interfaces is one of rinetd's primary features, sometimes it is preferable to respond on all IP addresses that belong to the server. In this situation, the special IP address 0.0.0.0 can be used. For example: .Pp 0.0.0.0 23 10.1.1.2 23 .Pp Would redirect all connections to port 23, for all IP addresses assigned to the server. This is the default behavior for most other programs. .Pp Service names can be specified instead of port numbers. On most systems, service names are defined in the file /etc/services. .Pp Both IP addresses and hostnames are accepted for bindaddress and connectaddress. .Pp .Sh ALLOW AND DENY RULES Configuration files can also contain allow and deny rules. .Pp Allow rules which appear before the first forwarding rule are applied globally: if at least one global allow rule exists, and the address of a new connection does not satisfy at least one of the global allow rules, that connection is immediately rejected, regardless of any other rules. .Pp Allow rules which appear after a specific forwarding rule apply to that forwarding rule only. If at least one allow rule exists for a particular forwarding rule, and the address of a new connection does not satisfy at least one of the allow rules for that forwarding rule, that connection is immediately rejected, regardless of any other rules. .Pp Deny rules which appear before the first forwarding rule are applied globally: if the address of a new connection satisfies any of the global allow rules, that connection is immediately rejected, regardless of any other rules. .Pp Deny rules which appear after a specific forwarding rule apply to that forwarding rule only. If the address of a new connection satisfies any of the deny rules for that forwarding rule, that connection is immediately rejected, regardless of any other rules. .Pp The format of an allow rule is as follows: .Pp allow pattern .Pp Patterns can contain the following characters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, . (period), ?, and *. The ? wildcard matches any one character. The * wildcard matches any number of characters, including zero. .Pp For example: .Pp allow 206.125.69.* .Pp This allow rule matches all IP addresses in the 206.125.69 class C domain. .Pp Host names are NOT permitted in allow and deny rules. The performance cost of looking up IP addresses to find their corresponding names is prohibitive. Since rinetd is a single process server, all other connections would be forced to pause during the address lookup. .Pp .Sh LOGGING rinetd is able to produce a log file in either of two formats: tab-delimited and web server-style "common log format." .Pp By default, rinetd does not produce a log file. To activate logging, add the following line to the configuration file: .Pp logfile log-file-location .Pp Example: logfile /var/log/rinetd.log .Pp By default, rinetd logs in a simple tab-delimited format containing the following information: .Pp Date and time .Pp Client address .Pp Listening host .Pp Listening port .Pp Forwarded-to host .Pp Forwarded-to port .Pp Bytes received from client .Pp Bytes sent to client .Pp Result message .Pp To activate web server-style "common log format" logging, add the following line to the configuration file: .Pp logcommon .Sh COMMAND LINE OPTIONS The -c command line option is used to specify an alternate configuration file. .Pp The -h command line option produces a short help message. .Pp The -v command line option displays the version number. .Sh REINITIALIZING RINETD The kill -1 signal (SIGHUP) can be used to cause rinetd to reload its configuration file without interrupting existing connections. Under Linux\(tm the process id is saved in the file \fI/var/run/rinetd.pid\fR to facilitate the kill -HUP. An alternate filename can be provided by using the pidlogfile configuration file option. .Sh LIMITATIONS rinetd redirects TCP connections only. There is no support for UDP. rinetd only redirects protocols which use a single TCP socket. This rules out FTP. .Sh BUGS The server redirected to is not able to identify the host the client really came from. This cannot be corrected; however, the log produced by rinetd provides a way to obtain this information. Under Unix, Sockets would theoretically lose data when closed with SO_LINGER turned off, but in Linux this is not the case (kernel source comments support this belief on my part). On non-Linux Unix platforms, alternate code which uses a different trick to work around blocking close() is provided, but this code is untested. The logging is inadequate. The duration of each connection should be logged. .Sh LICENSE Copyright (c) 1997, 1998, 1999, Thomas Boutell and Boutell.Com, Inc. This software is released for free use under the terms of the GNU Public License, version 2 or higher. NO WARRANTY IS EXPRESSED OR IMPLIED. USE THIS SOFTWARE AT YOUR OWN RISK. .Sh CONTACT INFORMATION See http://www.boutell.com/rinetd/ for the latest release. Thomas Boutell can be reached by email: boutell@boutell.com .Sh THANKS Thanks are due to Bill Davidsen, Libor Pechachek, Sascha Ziemann, the Apache Group, and many others who have contributed advice and/or source code to this and other free software projects. rinetd/Makefile0100644000031000004540000000024606666557556013035 0ustar boutelldevCFLAGS=-DLINUX -g rinetd: rinetd.o match.o gcc rinetd.o match.o -o rinetd install: rinetd install -m 700 rinetd /usr/sbin install -m 644 rinetd.8 /usr/man/man8 rinetd/README0100644000031000004540000000140207646344023012226 0ustar boutelldevrinetd version 0.62, by Thomas Boutell. Released under the terms of the GNU General Public License, version 2 or later. This program is used to efficiently redirect connections from one IP address/port combination to another. It is useful when operating virtual servers, firewalls and the like. A binary for 32-bit Windows (95, 98, NT) is included (see the file rinetd.exe). Windows 3.1 is not supported. To build under Unix, check the Makefile for platform- specific details and then type make. To install, type "make install" as root. To build under Windows, use the provided project files with Microsoft Visual C++. Windows 3.1 is not supported. For documentation run "make install", then type "man rinetd" for details. Or, read index.html in your browser. rinetd/index.html0100644000031000004540000002044407646344152013355 0ustar boutelldev RINETD(8)
RINETD(8) Unix System Manager's Manual RINETD(8)

NAME

rinetd -- internet ``redirection server''

SYNOPSIS

/usr/sbin/rinetd

VERSION

Version 0.62, 04/13/2003. Version 0.62 corrects a potential buffer overflow when reallocating memory to accommodate more connections. Upgrading is strongly recommended.

WHERE TO GET

For Linux: By anonymous FTP from ftp.boutell.com in the subdirectory boutell/rinetd as the file rinetd.tar.gz.

For Windows 95/98/NT: By anonymous FTP from ftp.boutell.com in the subdirectory boutell/rinetd as the file rinetd.zip.

DESCRIPTION

Redirects TCP connections from one IP address and port to another. rinetd is a single-process server which handles any number of connections to the address/port pairs specified in the file /etc/rinetd.conf. Since rinetd runs as a single process using nonblocking I/O, it is able to redirect a large number of connections without a severe impact on the machine. This makes it practical to run TCP services on machines inside an IP masquerading firewall. rinetd does not redirect FTP, because FTP requires more than one socket.

rinetd is typically launched at boot time, using the following syntax:

/usr/sbin/rinetd

The configuration file is found in the file /etc/rinetd.conf, unless another file is specified using the -c command line option.

FORWARDING RULES

Most entries in the configuration file are forwarding rules. The format of a forwarding rule is as follows: 

bindaddress bindport connectaddress connectport
For example: 
206.125.69.81 80 10.1.1.2 80
Would redirect all connections to port 80 of the "real" IP address 206.125.69.81, which could be a virtual interface, through rinetd to port 80 of the address 10.1.1.2, which would typically be a machine on the inside of a firewall which has no direct routing to the outside world.

Although responding on individual interfaces rather than on all interfaces is one of rinetd's primary features, sometimes it is preferable to respond on all IP addresses that belong to the server. In this situation, the special IP address 0.0.0.0 can be used. For example: 

0.0.0.0 23 10.1.1.2 23
Would redirect all connections to port 23, for all IP addresses assigned to the server. This is the default behavior for most other programs.

Service names can be specified instead of port numbers. On most systems, service names are defined in the file /etc/services.

Both IP addresses and hostnames are accepted for bindaddress and connectaddress.

ALLOW AND DENY RULES

Configuration files can also contain allow and deny rules.

Allow rules which appear before the first forwarding rule are applied globally: if at least one global allow rule exists, and the address of a new connection does not satisfy at least one of the global allow rules, that connection is immediately rejected, regardless of any other rules.

Allow rules which appear after a specific forwarding rule apply to that forwarding rule only. If at least one allow rule exists for a particular forwarding rule, and the address of a new connection does not satisfy at least one of the allow rules for that forwarding rule, that connection is immediately rejected, regardless of any other rules.

Deny rules which appear before the first forwarding rule are applied globally: if the address of a new connection satisfies any of the global allow rules, that connection is immediately rejected, regardless of any other rules.

Deny rules which appear after a specific forwarding rule apply to that forwarding rule only. If the address of a new connection satisfies any of the deny rules for that forwarding rule, that connection is immediately rejected, regardless of any other rules.

The format of an allow rule is as follows: 

allow pattern
Patterns can contain the following characters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, . (period), ?, and *. The ? wildcard matches any one character. The * wildcard matches any number of characters, including zero.

For example: 

allow 206.125.69.*
This allow rule matches all IP addresses in the 206.125.69 class C domain.

Host names are NOT permitted in allow and deny rules. The performance cost of looking up IP addresses to find their corresponding names is prohibitive. Since rinetd is a single process server, all other connections would be forced to pause during the address lookup.

LOGGING

rinetd is able to produce a log file in either of two formats: tab-delimited and web server-style "common log format."

By default, rinetd does not produce a log file. To activate logging, add the following line to the configuration file: 

logfile log-file-location
Example: 
logfile /var/log/rinetd.log
By default, rinetd logs in a simple tab-delimited format containing the following information:

Date and time
Client address
Listening host
Listening port
Forwarded-to host
Forwarded-to port
Bytes received from client
Bytes sent to client
Result message

To activate web server-style "common log format" logging, add the following line to the configuration file: 

logcommon

COMMAND LINE OPTIONS

The -c command line option is used to specify an alternate configuration file.

The -h command line option produces a short help message.

The -v command line option displays the version number.

REINITIALIZING RINETD

The kill -1 signal (SIGHUP) can be used to cause rinetd to reload its configuration file without interrupting existing connections. Under Linux(tm) the process id is saved in the file /var/run/rinetd.pid to facilitate the kill -HUP. An alternate file name can be provided by using the pidlogfile configuration file option.

BUGS

The server redirected to is not able to identify the host the client really came from. This cannot be corrected; however, the log produced by rinetd provides a way to obtain this information. Under Unix, sockets would theoretically lose data when closed with SO_LINGER turned off, but in Linux this is not the case (kernel source comments support this belief on my part). On non-Linux Unix platforms, alternate code which uses a different trick to work around blocking close() is provided, but this code is untested.

The logging is inadequate. The duration of the connection should be logged.

LICENSE

Copyright (c) 1997, 1998, 1999, Thomas Boutell and Boutell.Com, Inc. This software is released for free use under the terms of the GNU General Public License, version 2 or higher.

CONTACT INFORMATION

See the rinetd web page for the latest release. Thomas Boutell can be reached by email: boutell@boutell.com

THANKS

Thanks are due to Bill Davidsen, Libor Pechachek, Sascha Ziemann, Joel S. Noble, the Apache Group, and many others who have contributed advice, encouragement and/or source code to this and other open software projects. rinetd/rinetd.ncb0100740000031000004540000022200006662727474013327 0ustar boutelldevMicrosoft C/C++ program database 2.00 JG (VT Je J g ? ?  ^   ~ ddhudhudhu0St6V$V$V4V@ J & 0 P       ?  :  G kk 2P@  DE IJ >? ?@ :; ;<  BC X 67 d 78  @A  CDp 89} 9: AB HI EF FG( JK  H^ %' ) ./*! 13+n q-n/C `v1C3X x5X7393 )@;"=" B^? ACE 'G IggKjjL `M =>N7 45OooS NWn OXX= LMY^ NOZ q[ ^7 KL_ `{c{ sfk gi kO MNlffn p= 56q <=r1 34ssw P{cc| F} |XX|  ,- -. /0 01[ ! $% %&f !" 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End-of-string is considered to be a word constituent. ? is similarly considered to be a specialized word constituent. Match the word to the current position in s. Empty words automatically succeed. If the word matches s, and the word and s contain end-of-string at that point, return success. \ escapes the next character, including \ itself (6.0). For each *: Find the next occurrence of the next word and advance beyond it in both p and s. If the next word ends in end-of-string and is found successfully, return success, otherwise advance past the *. If the word is not found, return failure. If the next word is empty, advance past the *. Behavior of ?: advance one character in s and p. Addendum: consider the | character to be a logical OR separating distinct patterns. */ char *s = sorig; int escaped = 0; if (strstr(p, "WS-0000")) { if (strstr(s, "ws_ftp_pro.html")) { dummy = 1; } } while (1) { char *word; int wordLen; int wordPos; if (escaped) { /* This is like the default case, except that | doesn't end the pattern. */ escaped = 0; if ((*s == '\0') && (*p == '\0')) { return 1; } if (CASE(*p) != CASE(*s)) { goto nextPattern; } p++; s++; continue; } switch(*p) { case '\\': /* Escape the next character. */ escaped = 1; p++; continue; case '*': /* Find the next occurrence of the next word and advance beyond it in both p and s. If the next word ends in end-of-string and is found successfully, return success, otherwise advance past the *. If the word is not found, return failure. If the next word is empty, advance. */ p++; wordLen = 0; word = p; while (1) { if ((*p) == '*') { break; } wordLen++; if ((*p == '\0') || (*p == '|')) { break; } p++; } wordPos = 0; while (1) { if (wordPos == wordLen) { if ((*p == '\0') || (*p == '|')) { return 1; } break; } if ((((CASE(*s)) == CASE(word[wordPos])) || ((*s == '\0') && (word[wordPos] == '|'))) || (((*s != '\0') && (*s != '|')) && (word[wordPos] == '?'))) { wordPos++; s++; } else { s -= wordPos; if (!(*s)) { goto nextPattern; } s++; wordPos = 0; } } break; case '?': p++; s++; break; default: if ((*s == '\0') && ((*p == '\0') || (*p == '|'))) { return 1; } if (CASE(*p) != CASE(*s)) { goto nextPattern; } p++; s++; break; } continue; nextPattern: while (1) { if (*p == '\0') { return 0; } if (*p == '|') { p++; s = sorig; break; } p++; } } } #ifdef TEST_MATCH #include #include #include int main(int argc, char *argv[]) { char s[1024]; if (argc != 2) { fprintf(stderr, "Usage: match pattern\n"); return 1; } while (1) { if (!fgets(s, sizeof(s), stdin)) { break; } while (isspace(s[strlen(s) - 1])) { s[strlen(s) - 1] = '\0'; } printf("%s --> %s\n", s, argv[1]); if (match(s, argv[1])) { printf("Match\n"); } else { printf("No Match\n"); } } } #endif /* TEST_MATCH */ rinetd/match.h0100644000031000004540000000027406562646521012625 0ustar boutelldev#ifndef MATCH_H #define MATCH_H 1 extern int match(char *s, char *p); extern int matchNoCase(char *s, char *p); extern int matchBody(char *s, char *p, int nocase); #endif /* MATCH_H */ rinetd/rinetd.opt0100740000031000004540000013700006662727472013372 0ustar boutelldevࡱ>   I"#$%&'()*,-./012346789:;<=>@ABCDEFGHKLMNOPQRSUVWXYZ[\]Root Entry_[Workspace State  Browser Editorrinetdg:\rinetd\rinetd.dsp\rinetd.exe' has exited with code -1 (0xFFFFFFFF).!w"sWatchrdddd Variablesrxxdd RegistersrddddMemoryrxxdd Call Stackr"dd Disassemblyr6dd,XX : Workspace7 sdx d %& InfoViewer Topic@sdxddymbo, Results ListAsdd dd,Menu bar7t4d""Standard/t2Pd;Build&tyd Full Screent8n?odd Build MiniBar/undYwATL.uddResource.uddDialoguduControlsuddGraphicsu0dzJVdVColorsu0VwSdS Text Toolud(dd InfoViewer6udd Results List6 uddEdit.uddDebug6v{ddBrowse>vddSource ControlwddRecord`wdd WizardBar3 w~d;XYY@9~CDockWnd;Yw3~"w3~"P4~"aJ IhoJ IhuJ Ih|J JhJ $JhJ nJhJ JhK JhQK JhXK JhK KhK \KhK dKhK jKhK xKhL KhL Kh'L Kh0L KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM ,MhM lMhN Mh$N Mh.N MhMN MhWN MhfN MhmN MhtN MhN ?NhN UNhN \NhO NhRO NhhO NhpO NhwO NhO OhO *OhO 8OhO @OhO UOhO _OhO jOhP OhUP Oh%8n?oP PhP PhP $PhP 3PhP 8PhP ;PhP =PhP BPhP bPhP rPhQ Ph Q Ph#Q PhVQ PhxQ QhQ QhQ QhQ  QhQ "QhQ 'QhQ cQhQ sQhR QhR QhHR Qh^R QhaR QhR 7RhR :RhR vddSource ControlwddRecord`wdd WizardBar3 w~d;XYY@9~CDockWnd;Yw3~"w3~"P4~"aJ IhoJ IhuJ Ih|J JhJ $JhJ nJhJ JhK JhQK JhXK JhK KhK \KhK dKhK jKhK xKhL KhL Kh'L Kh0L KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM ,MhM lMhN Mh$N Mh.N MhMN MhWN MhfN MhmN MhtN MhN ?NhN UNhN \NhO NhRO NhhO NhpO NhwO NhO OhO *OhO 8OhO @OhO UOhO _OhO jOhP OhUP Oh%8n?oP PhP PhP $PhP 3PhP 8PhP ;PhP =PhP BPhP bPhP rPhQ Ph Q Ph#Q PhVQ PhxQ QhQ QhQ QhQ  QhQ "QhQ 'QhQ cQhQ sQhR QhR QhHR Qh^R QhaR QhR 7RhR :RhR vddSource ControlwddRecord`wdd WizardBar3 w~d;XYY@9~CDockWnd;Yw3~"w3~"P4~"aJ IhoJ IhuJ Ih|J JhJ $JhJ nJhJ JhK JhQK JhXK JhK KhK \KhK dKhK jKhK xKhL KhL Kh'L Kh0L KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM ,MhM lMhN Mh$N Mh.N MhMN MhWN MhfN MhmN MhtN MhN ?NhN UNhN \NhO NhRO NhhO NhpO NhwO NhO OhO *OhO 8OhO @OhO UOhO _OhO jOhP OhUP Oh%8n?oP PhP PhP $PhP 3PhP 8PhP ;PhP =PhP BPhP bPhP rPhQ Ph Q Ph#Q PhVQ PhxQ QhQ QhQ QhQ  QhQ "QhQ 'QhQ cQhQ sQhR QhR QhHR Qh^R QhaR QhR 7RhR :RhR rinetd classesrinetd classesFileView Workspace 'rinetd': 1 project(s) rinetd filesrinetd.crinetd.c Workspace 'rinetd': 1 project(s)InfoViewDeveloper ProductsDeveloper ProductsFileViewdd Call Stackr"dd Disassemblyr6dd,XX : Workspace7 sdx d %& InfoViewer Topic@sdxddymbo, Results ListAsdd dd,Menu bar7t4d""Standard/t2Pd;Build&tyd Full Screent8n?odd Build MiniBar/undYwATL.uddResource.uddDialoguduControlsuddGraphicsu0dzJVdVColorsu0VwSdS Text Toolud(dd InfoViewer6udd Results List6 uddEdit.uddDebug6v{ddBrowse>vddSource ControlwddRecord`wdd WizardBar3 w~d;XYY@9~CDockWnd;Yw3~"w3~"P4~"aJ IhoJ IhuJ Ih|J JhJ $JhJ nJhJ JhK JhQK JhXK JhK KhK \KhK dKhK jKhK xKhL KhL Kh'L Kh0L KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM ,MhM lMhN Mh$N Mh.N MhMN MhWN MhfN MhmN MhtN MhN ?NhN UNhN \NhO NhRO NhhO NhpO NhwO NhO OhO *OhO 8OhO @OhO UOhO _OhO jOhP OhUP Oh%8n?oP PhP PhP $PhP 3PhP 8PhP ;PhP =PhP BPhP bPhP rPhQ Ph Q Ph#Q PhVQ PhxQ QhQ QhQ QhQ  QhQ "QhQ 'QhQ cQhQ sQhR QhR QhHR Qh^R QhaR QhR 7RhR :RhR vddSource ControlwddRecord`wdd WizardBar3 w~d;XYY@9~CDockWnd;Yw3~"w3~"P4~"aJ IhoJ IhuJ Ih|J JhJ $JhJ nJhJ JhK JhQK JhXK JhK KhK \KhK dKhK jKhK xKhL KhL Kh'L Kh0L KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM 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KhFL KhLL KhL LhL 5LhL ?LhL ULhL bLhL lLhL wLhM LhM Lh M Lh'M Lh-M LhgM LhM  MhM MhM ,MhM lMhN Mh$N Mh.N MhMN MhWN MhfN MhmN MhtN MhN ?NhN UNhN \NhO NhRO NhhO NhpO NhwO NhO OhO *OhO 8OhO @OhO UOhO _OhO jOhP OhUP Oh%8n?oP PhP PhP $PhP 3PhP 8PhP ;PhP =PhP BPhP bPhP rPhQ Ph Q Ph#Q PhVQ PhxQ QhQ QhQ QhQ  QhQ "QhQ 'QhQ cQhQ sQhR QhR QhHR Qh^R QhaR QhR 7RhR :RhR  Package=<5> {{{ }}} Package=<4> {{{ }}} ############################################################################### Global: Package=<5> {{{ }}} Package=<3> {{{ }}} ############################################################################### rinetd/rinetd.dsp0100740000031000004540000000674306662727470013365 0ustar boutelldev# Microsoft Developer Studio Project File - Name="rinetd" - Package Owner=<4> # Microsoft Developer Studio Generated Build File, Format Version 5.00 # ** DO NOT EDIT ** # TARGTYPE "Win32 (x86) Console Application" 0x0103 CFG=rinetd - Win32 Debug !MESSAGE This is not a valid makefile. To build this project using NMAKE, !MESSAGE use the Export Makefile command and run !MESSAGE !MESSAGE NMAKE /f "rinetd.mak". !MESSAGE !MESSAGE You can specify a configuration when running NMAKE !MESSAGE by defining the macro CFG on the command line. For example: !MESSAGE !MESSAGE NMAKE /f "rinetd.mak" CFG="rinetd - Win32 Debug" !MESSAGE !MESSAGE Possible choices for configuration are: !MESSAGE !MESSAGE "rinetd - Win32 Release" (based on "Win32 (x86) Console Application") !MESSAGE "rinetd - Win32 Debug" (based on "Win32 (x86) Console Application") !MESSAGE # Begin Project # PROP Scc_ProjName "" # PROP Scc_LocalPath "" CPP=cl.exe RSC=rc.exe !IF "$(CFG)" == "rinetd - Win32 Release" # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 0 # PROP BASE Output_Dir "Release" # PROP BASE Intermediate_Dir "Release" # PROP BASE Target_Dir "" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 0 # PROP Output_Dir "Release" # PROP Intermediate_Dir "Release" # PROP Ignore_Export_Lib 0 # PROP Target_Dir "" # ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c # ADD CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c # ADD BASE RSC /l 0x409 /d "NDEBUG" # ADD RSC /l 0x409 /d "NDEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386 # ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib wsock32.lib /nologo /subsystem:console /machine:I386 !ELSEIF "$(CFG)" == "rinetd - Win32 Debug" # PROP BASE Use_MFC 0 # PROP BASE Use_Debug_Libraries 1 # PROP BASE Output_Dir "Debug" # PROP BASE Intermediate_Dir "Debug" # PROP BASE Target_Dir "" # PROP Use_MFC 0 # PROP Use_Debug_Libraries 1 # PROP Output_Dir "Debug" # PROP Intermediate_Dir "Debug" # PROP Ignore_Export_Lib 0 # PROP Target_Dir "" # ADD BASE CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c # ADD CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c # ADD BASE RSC /l 0x409 /d "_DEBUG" # ADD RSC /l 0x409 /d "_DEBUG" BSC32=bscmake.exe # ADD BASE BSC32 /nologo # ADD BSC32 /nologo LINK32=link.exe # ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept # ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib wsock32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept !ENDIF # Begin Target # Name "rinetd - Win32 Release" # Name "rinetd - Win32 Debug" # Begin Source File SOURCE=.\getopt.c # End Source File # Begin Source File SOURCE=.\match.c # End Source File # Begin Source File SOURCE=.\rinetd.c # End Source File # End Target # End Project rinetd/getopt.c0100740000031000004540000005346006662676102013027 0ustar boutelldev/* THIS IS HERE FOR WIN32's BENEFIT ONLY. */ /* Getopt for GNU. NOTE: getopt is now part of the C library, so if you don't know what "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu before changing it! Copyright (C) 1987, 88, 89, 90, 91, 92, 1993 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #ifndef __STDC__ # ifndef const # define const # endif #endif /* This tells Alpha OSF/1 not to define a getopt prototype in . */ #ifndef _NO_PROTO #define _NO_PROTO #endif #include /* Comment out all this code if we are using the GNU C Library, and are not actually compiling the library itself. This code is part of the GNU C Library, but also included in many other GNU distributions. Compiling and linking in this code is a waste when using the GNU C library (especially if it is a shared library). Rather than having every GNU program understand `configure --with-gnu-libc' and omit the object files, it is simpler to just do this in the source for each such file. */ #if defined (_LIBC) || !defined (__GNU_LIBRARY__) /* This needs to come after some library #include to get __GNU_LIBRARY__ defined. */ #ifdef __GNU_LIBRARY__ /* Don't include stdlib.h for non-GNU C libraries because some of them contain conflicting prototypes for getopt. */ #include #endif /* GNU C library. */ /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a long-named option. Because this is not POSIX.2 compliant, it is being phased out. */ /* #define GETOPT_COMPAT */ /* This version of `getopt' appears to the caller like standard Unix `getopt' but it behaves differently for the user, since it allows the user to intersperse the options with the other arguments. As `getopt' works, it permutes the elements of ARGV so that, when it is done, all the options precede everything else. Thus all application programs are extended to handle flexible argument order. Setting the environment variable POSIXLY_CORRECT disables permutation. Then the behavior is completely standard. GNU application programs can use a third alternative mode in which they can distinguish the relative order of options and other arguments. */ #include "getopt.h" /* For communication from `getopt' to the caller. When `getopt' finds an option that takes an argument, the argument value is returned here. Also, when `ordering' is RETURN_IN_ORDER, each non-option ARGV-element is returned here. */ char *optarg = 0; /* Index in ARGV of the next element to be scanned. This is used for communication to and from the caller and for communication between successive calls to `getopt'. On entry to `getopt', zero means this is the first call; initialize. When `getopt' returns EOF, this is the index of the first of the non-option elements that the caller should itself scan. Otherwise, `optind' communicates from one call to the next how much of ARGV has been scanned so far. */ /* XXX 1003.2 says this must be 1 before any call. */ int optind = 0; /* The next char to be scanned in the option-element in which the last option character we returned was found. This allows us to pick up the scan where we left off. If this is zero, or a null string, it means resume the scan by advancing to the next ARGV-element. */ static char *nextchar; /* Callers store zero here to inhibit the error message for unrecognized options. */ int opterr = 1; /* Set to an option character which was unrecognized. This must be initialized on some systems to avoid linking in the system's own getopt implementation. */ #define BAD_OPTION '\0' int optopt = BAD_OPTION; /* Describe how to deal with options that follow non-option ARGV-elements. If the caller did not specify anything, the default is REQUIRE_ORDER if the environment variable POSIXLY_CORRECT is defined, PERMUTE otherwise. REQUIRE_ORDER means don't recognize them as options; stop option processing when the first non-option is seen. This is what Unix does. This mode of operation is selected by either setting the environment variable POSIXLY_CORRECT, or using `+' as the first character of the list of option characters. PERMUTE is the default. We permute the contents of ARGV as we scan, so that eventually all the non-options are at the end. This allows options to be given in any order, even with programs that were not written to expect this. RETURN_IN_ORDER is an option available to programs that were written to expect options and other ARGV-elements in any order and that care about the ordering of the two. We describe each non-option ARGV-element as if it were the argument of an option with character code 1. Using `-' as the first character of the list of option characters selects this mode of operation. The special argument `--' forces an end of option-scanning regardless of the value of `ordering'. In the case of RETURN_IN_ORDER, only `--' can cause `getopt' to return EOF with `optind' != ARGC. */ static enum { REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER } ordering; #ifdef __GNU_LIBRARY__ /* We want to avoid inclusion of string.h with non-GNU libraries because there are many ways it can cause trouble. On some systems, it contains special magic macros that don't work in GCC. */ #include #define my_index strchr #define my_strlen strlen #else /* Avoid depending on library functions or files whose names are inconsistent. */ #if __STDC__ || defined(PROTO) extern char *getenv(const char *name); extern int strcmp (const char *s1, const char *s2); extern int strncmp(const char *s1, const char *s2, int n); static int my_strlen(const char *s); static char *my_index (const char *str, int chr); #else extern char *getenv (); #endif static int my_strlen (str) const char *str; { int n = 0; while (*str++) n++; return n; } static char * my_index (str, chr) const char *str; int chr; { while (*str) { if (*str == chr) return (char *) str; str++; } return 0; } #endif /* GNU C library. */ /* Handle permutation of arguments. */ /* Describe the part of ARGV that contains non-options that have been skipped. `first_nonopt' is the index in ARGV of the first of them; `last_nonopt' is the index after the last of them. */ static int first_nonopt; static int last_nonopt; /* Exchange two adjacent subsequences of ARGV. One subsequence is elements [first_nonopt,last_nonopt) which contains all the non-options that have been skipped so far. The other is elements [last_nonopt,optind), which contains all the options processed since those non-options were skipped. `first_nonopt' and `last_nonopt' are relocated so that they describe the new indices of the non-options in ARGV after they are moved. To perform the swap, we first reverse the order of all elements. So all options now come before all non options, but they are in the wrong order. So we put back the options and non options in original order by reversing them again. For example: original input: a b c -x -y reverse all: -y -x c b a reverse options: -x -y c b a reverse non options: -x -y a b c */ #if __STDC__ || defined(PROTO) static void exchange (char **argv); #endif static void exchange (argv) char **argv; { char *temp, **first, **last; /* Reverse all the elements [first_nonopt, optind) */ first = &argv[first_nonopt]; last = &argv[optind-1]; while (first < last) { temp = *first; *first = *last; *last = temp; first++; last--; } /* Put back the options in order */ first = &argv[first_nonopt]; first_nonopt += (optind - last_nonopt); last = &argv[first_nonopt - 1]; while (first < last) { temp = *first; *first = *last; *last = temp; first++; last--; } /* Put back the non options in order */ first = &argv[first_nonopt]; last_nonopt = optind; last = &argv[last_nonopt-1]; while (first < last) { temp = *first; *first = *last; *last = temp; first++; last--; } } /* Scan elements of ARGV (whose length is ARGC) for option characters given in OPTSTRING. If an element of ARGV starts with '-', and is not exactly "-" or "--", then it is an option element. The characters of this element (aside from the initial '-') are option characters. If `getopt' is called repeatedly, it returns successively each of the option characters from each of the option elements. If `getopt' finds another option character, it returns that character, updating `optind' and `nextchar' so that the next call to `getopt' can resume the scan with the following option character or ARGV-element. If there are no more option characters, `getopt' returns `EOF'. Then `optind' is the index in ARGV of the first ARGV-element that is not an option. (The ARGV-elements have been permuted so that those that are not options now come last.) OPTSTRING is a string containing the legitimate option characters. If an option character is seen that is not listed in OPTSTRING, return BAD_OPTION after printing an error message. If you set `opterr' to zero, the error message is suppressed but we still return BAD_OPTION. If a char in OPTSTRING is followed by a colon, that means it wants an arg, so the following text in the same ARGV-element, or the text of the following ARGV-element, is returned in `optarg'. Two colons mean an option that wants an optional arg; if there is text in the current ARGV-element, it is returned in `optarg', otherwise `optarg' is set to zero. If OPTSTRING starts with `-' or `+', it requests different methods of handling the non-option ARGV-elements. See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. Long-named options begin with `--' instead of `-'. Their names may be abbreviated as long as the abbreviation is unique or is an exact match for some defined option. If they have an argument, it follows the option name in the same ARGV-element, separated from the option name by a `=', or else the in next ARGV-element. When `getopt' finds a long-named option, it returns 0 if that option's `flag' field is nonzero, the value of the option's `val' field if the `flag' field is zero. The elements of ARGV aren't really const, because we permute them. But we pretend they're const in the prototype to be compatible with other systems. LONGOPTS is a vector of `struct option' terminated by an element containing a name which is zero. LONGIND returns the index in LONGOPT of the long-named option found. It is only valid when a long-named option has been found by the most recent call. If LONG_ONLY is nonzero, '-' as well as '--' can introduce long-named options. */ int _getopt_internal (argc, argv, optstring, longopts, longind, long_only) int argc; char *const *argv; const char *optstring; const struct option *longopts; int *longind; int long_only; { int option_index; optarg = 0; /* Initialize the internal data when the first call is made. Start processing options with ARGV-element 1 (since ARGV-element 0 is the program name); the sequence of previously skipped non-option ARGV-elements is empty. */ if (optind == 0) { first_nonopt = last_nonopt = optind = 1; nextchar = NULL; /* Determine how to handle the ordering of options and nonoptions. */ if (optstring[0] == '-') { ordering = RETURN_IN_ORDER; ++optstring; } else if (optstring[0] == '+') { ordering = REQUIRE_ORDER; ++optstring; } else if (getenv ("POSIXLY_CORRECT") != NULL) ordering = REQUIRE_ORDER; else ordering = PERMUTE; } if (nextchar == NULL || *nextchar == '\0') { if (ordering == PERMUTE) { /* If we have just processed some options following some non-options, exchange them so that the options come first. */ if (first_nonopt != last_nonopt && last_nonopt != optind) exchange ((char **) argv); else if (last_nonopt != optind) first_nonopt = optind; /* Now skip any additional non-options and extend the range of non-options previously skipped. */ while (optind < argc && (argv[optind][0] != '-' || argv[optind][1] == '\0') #ifdef GETOPT_COMPAT && (longopts == NULL || argv[optind][0] != '+' || argv[optind][1] == '\0') #endif /* GETOPT_COMPAT */ ) optind++; last_nonopt = optind; } /* Special ARGV-element `--' means premature end of options. Skip it like a null option, then exchange with previous non-options as if it were an option, then skip everything else like a non-option. */ if (optind != argc && !strcmp (argv[optind], "--")) { optind++; if (first_nonopt != last_nonopt && last_nonopt != optind) exchange ((char **) argv); else if (first_nonopt == last_nonopt) first_nonopt = optind; last_nonopt = argc; optind = argc; } /* If we have done all the ARGV-elements, stop the scan and back over any non-options that we skipped and permuted. */ if (optind == argc) { /* Set the next-arg-index to point at the non-options that we previously skipped, so the caller will digest them. */ if (first_nonopt != last_nonopt) optind = first_nonopt; return EOF; } /* If we have come to a non-option and did not permute it, either stop the scan or describe it to the caller and pass it by. */ if ((argv[optind][0] != '-' || argv[optind][1] == '\0') #ifdef GETOPT_COMPAT && (longopts == NULL || argv[optind][0] != '+' || argv[optind][1] == '\0') #endif /* GETOPT_COMPAT */ ) { if (ordering == REQUIRE_ORDER) return EOF; optarg = argv[optind++]; return 1; } /* We have found another option-ARGV-element. Start decoding its characters. */ nextchar = (argv[optind] + 1 + (longopts != NULL && argv[optind][1] == '-')); } if (longopts != NULL && ((argv[optind][0] == '-' && (argv[optind][1] == '-' || long_only)) #ifdef GETOPT_COMPAT || argv[optind][0] == '+' #endif /* GETOPT_COMPAT */ )) { const struct option *p; char *s = nextchar; int exact = 0; int ambig = 0; const struct option *pfound = NULL; int indfound = 0; while (*s && *s != '=') s++; /* Test all options for either exact match or abbreviated matches. */ for (p = longopts, option_index = 0; p->name; p++, option_index++) if (!strncmp (p->name, nextchar, s - nextchar)) { if (s - nextchar == my_strlen (p->name)) { /* Exact match found. */ pfound = p; indfound = option_index; exact = 1; break; } else if (pfound == NULL) { /* First nonexact match found. */ pfound = p; indfound = option_index; } else /* Second nonexact match found. */ ambig = 1; } if (ambig && !exact) { if (opterr) fprintf (stderr, "%s: option `%s' is ambiguous\n", argv[0], argv[optind]); nextchar += my_strlen (nextchar); optind++; return BAD_OPTION; } if (pfound != NULL) { option_index = indfound; optind++; if (*s) { /* Don't test has_arg with >, because some C compilers don't allow it to be used on enums. */ if (pfound->has_arg) optarg = s + 1; else { if (opterr) { if (argv[optind - 1][1] == '-') /* --option */ fprintf (stderr, "%s: option `--%s' doesn't allow an argument\n", argv[0], pfound->name); else /* +option or -option */ fprintf (stderr, "%s: option `%c%s' doesn't allow an argument\n", argv[0], argv[optind - 1][0], pfound->name); } nextchar += my_strlen (nextchar); return BAD_OPTION; } } else if (pfound->has_arg == 1) { if (optind < argc) optarg = argv[optind++]; else { if (opterr) fprintf (stderr, "%s: option `%s' requires an argument\n", argv[0], argv[optind - 1]); nextchar += my_strlen (nextchar); return optstring[0] == ':' ? ':' : BAD_OPTION; } } nextchar += my_strlen (nextchar); if (longind != NULL) *longind = option_index; if (pfound->flag) { *(pfound->flag) = pfound->val; return 0; } return pfound->val; } /* Can't find it as a long option. If this is not getopt_long_only, or the option starts with '--' or is not a valid short option, then it's an error. Otherwise interpret it as a short option. */ if (!long_only || argv[optind][1] == '-' #ifdef GETOPT_COMPAT || argv[optind][0] == '+' #endif /* GETOPT_COMPAT */ || my_index (optstring, *nextchar) == NULL) { if (opterr) { if (argv[optind][1] == '-') /* --option */ fprintf (stderr, "%s: unrecognized option `--%s'\n", argv[0], nextchar); else /* +option or -option */ fprintf (stderr, "%s: unrecognized option `%c%s'\n", argv[0], argv[optind][0], nextchar); } nextchar = (char *) ""; optind++; return BAD_OPTION; } } /* Look at and handle the next option-character. */ { char c = *nextchar++; char *temp = my_index (optstring, c); /* Increment `optind' when we start to process its last character. */ if (*nextchar == '\0') ++optind; if (temp == NULL || c == ':') { if (opterr) { #if 0 if (c < 040 || c >= 0177) fprintf (stderr, "%s: unrecognized option, character code 0%o\n", argv[0], c); else fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c); #else /* 1003.2 specifies the format of this message. */ fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); #endif } optopt = c; return BAD_OPTION; } if (temp[1] == ':') { if (temp[2] == ':') { /* This is an option that accepts an argument optionally. */ if (*nextchar != '\0') { optarg = nextchar; optind++; } else optarg = 0; nextchar = NULL; } else { /* This is an option that requires an argument. */ if (*nextchar != '\0') { optarg = nextchar; /* If we end this ARGV-element by taking the rest as an arg, we must advance to the next element now. */ optind++; } else if (optind == argc) { if (opterr) { #if 0 fprintf (stderr, "%s: option `-%c' requires an argument\n", argv[0], c); #else /* 1003.2 specifies the format of this message. */ fprintf (stderr, "%s: option requires an argument -- %c\n", argv[0], c); #endif } optopt = c; if (optstring[0] == ':') c = ':'; else c = BAD_OPTION; } else /* We already incremented `optind' once; increment it again when taking next ARGV-elt as argument. */ optarg = argv[optind++]; nextchar = NULL; } } return c; } } int getopt (argc, argv, optstring) int argc; char *const *argv; const char *optstring; { return _getopt_internal (argc, argv, optstring, (const struct option *) 0, (int *) 0, 0); } int getopt_long (argc, argv, options, long_options, opt_index) int argc; char *const *argv; const char *options; const struct option *long_options; int *opt_index; { return _getopt_internal (argc, argv, options, long_options, opt_index, 0); } #endif /* _LIBC or not __GNU_LIBRARY__. */ #ifdef TEST /* Compile with -DTEST to make an executable for use in testing the above definition of `getopt'. */ int main (argc, argv) int argc; char **argv; { int c; int digit_optind = 0; while (1) { int this_option_optind = optind ? optind : 1; c = getopt (argc, argv, "abc:d:0123456789"); if (c == EOF) break; switch (c) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': if (digit_optind != 0 && digit_optind != this_option_optind) printf ("digits occur in two different argv-elements.\n"); digit_optind = this_option_optind; printf ("option %c\n", c); break; case 'a': printf ("option a\n"); break; case 'b': printf ("option b\n"); break; case 'c': printf ("option c with value `%s'\n", optarg); break; case BAD_OPTION: break; default: printf ("?? getopt returned character code 0%o ??\n", c); } } if (optind < argc) { printf ("non-option ARGV-elements: "); while (optind < argc) printf ("%s ", argv[optind++]); printf ("\n"); } exit (0); } #endif /* TEST */ rinetd/rinetd.plg0100740000031000004540000000417506662677660013363 0ustar boutelldev--------------------Configuration: rinetd - Win32 Debug-------------------- Begining build with project "g:\rinetd\rinetd.dsp", at root. Active configuration is Win32 (x86) Console Application (based on Win32 (x86) Console Application) Project's tools are: "32-bit C/C++ Compiler for 80x86" with flags "/nologo /MLd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /Fp"Debug/rinetd.pch" /YX /Fo"Debug/" /Fd"Debug/" /FD /c " "Win32 Resource Compiler" with flags "/l 0x409 /d "_DEBUG" " "Browser Database Maker" with flags "/nologo /o"Debug/rinetd.bsc" " "COFF Linker for 80x86" with flags "kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib wsock32.lib /nologo /subsystem:console /incremental:yes /pdb:"Debug/rinetd.pdb" /debug /machine:I386 /out:"Debug/rinetd.exe" /pdbtype:sept " "Custom Build" with flags "" "" with flags "" Creating temp file "c:\windows\TEMP\RSP10D4.TMP" with contents Creating command line "cl.exe @c:\windows\TEMP\RSP10D4.TMP" Creating temp file "c:\windows\TEMP\RSP10D5.TMP" with contents Creating command line "link.exe @c:\windows\TEMP\RSP10D5.TMP" Compiling... rinetd.c G:\rinetd\rinetd.c(965) : warning C4101: 'arg' : unreferenced local variable G:\rinetd\rinetd.c(992) : warning C4101: 'arg' : unreferenced local variable G:\rinetd\rinetd.c(1367) : warning C4101: 'pid_file' : unreferenced local variable Linking... LINK : LNK6004: Debug/rinetd.exe not found or not built by the last incremental link; performing full link rinetd.exe - 0 error(s), 3 warning(s) rinetd/.CHANGES.swp0100600000031000004540000003000007646344176013224 0ustar boutelldevb0VIM 6.16A}~boutellboutell.com~boutell/src/rinetd/CHANGESU3210#"! Utp1ad1s? p>  ] & _ 1 h g 6  p o >   _ -   Version 0.62: broke rinetd under Linux. Oops.Version 0.61: fixed a bug in 0.6 which completelyfunctional consequences were corrected.fixes were made and some minor oversights withoutVersion 0.6: ported to Win32. Various compatibilityusing the special address 0.0.0.0.ability to bind to all IP addresses, if desired,Version 0.52: documentation added regarding thelog file before writing log entries.Version 0.51: fixed failure to check for an open-c command line option to specify a configuration file.an error. Added allow and deny rules. Added an individual configuration file line generatesand web-server-style formats. No longer exits ifVersion 0.5: added logging in both tab-delimitedwhen another application is hogging memory.crashing the program or breaking existing connectionsthem with code that should fail gracefully withoutport numbers. Removed calls to realloc(), replacingand specification of service names instead ofVersion 0.4: added support for kill -1 (SIGHUP)actually have any to play with it on.to bug-free on non-Linux platforms. Of course, I don't Linux also, so it is likely that rinetd is much closer mysteriously closed. Most of that code is now used by going away when they should or connections beingThis should fix problems such as connections notthe code previously used only by non-Linux OSes.Version 0.3: fixed additional bugs relating toresulting in a blocking call.server socket went away before the accept() call,indefinite pauses when a possible connection to asystems as well. Fixed bug causing long, perhapsassociated bugs that probably affected other operatingother side on close, when running under Linux. FixedFixed bug which threw away data not yet sent to theon one end or the other before a write flushes them.Version 0.2: fixed bug when several reads are necessaryVersion 0.1: original version.rinetd/rinetd.exe0100755000031000004540000107011507646344635013362 0ustar boutelldevMZ@ !L!This program cannot be run in DOS mode. $PELə>(^ 8^ p@p 0.text\^ `.dataTpb@.bss.idata0d@.stabĕlB.stabstrl%@&BUEEP54q@EPhp@hp@ZÐU8q@t{|@@t58q@PZPZ@ t58q@PbZPaZ@@t58q@P:ZP9ZÍvUVSE11=w=sO=tv=t9=t7tjj Yujj YMtLj >jjYujjYt{Y t jл؍e[^USh@HZ@Y_&Y05p@5p@ à YSZUjp@1ÐUjp@yÍvUEvEE8u vEvUÉU吋E8uE;U u UEۍv1ÉU @U‰U p@PEЉEvE;Er&EUEU EUEEС @U‰U p@0@) @ @PEЉEE;Er&EUEU EUEEС @U‰U p@0@0@PEЉEvE;Er&EUEU EUEEPOSIXLY_CORRECT--%s: option `%s' is ambiguous %s: option `--%s' doesn't allow an argument %s: option `%c%s' doesn't allow an argument %s: option `%s' requires an argument %s: unrecognized option `--%s' %s: unrecognized option `%c%s' %s: illegal option -- %c t&%s: option requires an argument -- %c U0VSp@= p@ p@0@ @@E8-u@EHE8+u@E/h@CUt@ @=@t@8=@ @;0@t0@; p@tE P-0@; p@t p@ @ p@;E}2 p@E :-u p@E B:u  p@븡 p@0@ p@;Eh@ p@E R0TuZ p@ @;0@t 0@; p@tE P[ @;0@u p@ @E0@E p@ p@;Eu# @;0@t @ p@ p@E :-u p@E B:uAv=@u Y p@E p@ p@0 p@U 1Ƀ}t p@4] 43F>-uAˉ@}p p@E :-U p@E B:-t }u2@EEEEEE8t E8=u EvEEEE8uvE@)P@PERRuVE@)ӃER9uEEEEE*}uEEEEEEEe}tf}u`=p@t/ p@E RE Rh@@@PcQ@PZ@ p@1J}EE p@E8ExtE@p@v=p@ p@E P@8-u'ERE Rh @@@PPBvER p@E PRE RhL@@@PpP @Pg@1]vEx p@;E}! p@E p@ p@q=p@t3 p@E PPE Rh@@@PO@P@E8:u:1v@P@}tEUExtUBUJ 1gvEP Wv}t> p@E B:-t&@REPM=p@tz p@E B:-u'@PE Rh@@@PN>v@P p@E PE Rh@@@PN @ @ p@1v@U@EPEPE@8u p@}t }:t==p@t!EPE Rh @@@PMEp@1E@8:E8:u8@8t@p@ p@ p@@v@8t@p@ p@r p@;EuJ=p@t!EPE Rh,@@@PCMEp@E8:uE:E p@E p@ p@@Ue[^ÐUjjjEPE PEP ‰vÉUjEPEPEPE PEP ‰vÍ&'deniednot-allowedlocal-connect-failed -local-bind-failed -local-socket-failed -accept-failed -done-remote-closeddone-local-closed/etc/rinetd.confYour computer was not connected to the Internet at the time that this program was launched, or you do not have a 32-bit connection to the Internet.UJpPh~Illt&h,@@@PJjKhp@E PEPAhle@jJ]<:1rrinetd: can't open %s logfilepidlogfilelogcommonallowdenyt&rinetd: no bind address specified on line %d. rinetd: nothing to allow specified on line %d. rinetd: illegal allow or deny pattern. Only digits, ., and the ? and * wild cards are allowed. For performance reasons, rinetd does not look up complete host names. rinetd: nothing to deny specified on line %d. rinetd: no log file name specified on line %d. rinetd: no PID log file name specified on line %d. rinetd: no bind port specified on line %d. tcprinetd: bind port missing or out of range on line %d. 'rinetd: no connect address specified on line %d. &'rinetd: no connect port specified on line %d. rinetd: host %s could not be resolved on line %d. 'rinetd: couldn't create server socket! rinetd: couldn't bind to address %s port %d rinetd: couldn't listen to address %s port %d a rinetd: could not open %s to append. rinetd: not enough memory to start rinetd. 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