pax_global_header00006660000000000000000000000064152160150140014505gustar00rootroot0000000000000052 comment=97e2196c35899bc44da53590ccccaa6b3d908b90 clamsmtp-1.10.2/000077500000000000000000000000001521601501400134065ustar00rootroot00000000000000clamsmtp-1.10.2/AUTHORS000066400000000000000000000011521521601501400144550ustar00rootroot00000000000000AUTHOR: Stef Walter CONTRIBUTORS: Andreas Steinmetz Rubio Vaughan Olivier Beyssac PATCHES: Berk D. Demir João Carlos Mendes Luís Jasper Slits Yamamoto Takao Ben Mesman Chris Mason Laurent Papier Piotr Klaban Greg Hackney Billy B. Bilano Loic Le Loarer clamsmtp-1.10.2/COPYING000066400000000000000000000027411521601501400144450ustar00rootroot00000000000000 Copyright (c) 2004, Stefan Walter All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * The names of contributors to this software may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. clamsmtp-1.10.2/ChangeLog000066400000000000000000000126311521601501400151630ustar00rootroot000000000000001.10.1 [2025-01-29] - Fix compilation issues on Linux 1.10 [2007-06-30] - Make the XFOWARD HELO available as a environment variable in scripts. [Glenn Matthys] - Send an RSET to the server after filter fails an email. 1.9 [2007-05-28] - Resolve any DNS name for each connection. - Use my real name 'Stefan Walter' See: http://memberwebs.com/nielsen/ 1.8 [2006-09-05] - Fix dumb bug with 'Action' config line - Added support for setting the REMOTE variable when an XFORWARD command is seen. 1.7 [2006-08-10] - Fix crasher when connection goes down unexpectedly. - Add support for letting virus emails pass. - Better message for 'busy' [Akihiro Sagawa] 1.6 [2005-10-21] - IMPORTANT: Removed support for listening on ports under < 1024 See: http://memberwebs.com/stef/software/clamsmtp/faq.html#low-ports - Support embedded NULLs in email data. - Fix problems with not listening properly when in daemon mode - Fix warnings when compiled with gcc 4.0 - Handle empty addresses properly in logs. - Don't let exchange send it's strange binary data through the proxy - More Solaris fixes :( - Don't reject emails when server is overloaded or errors. - Don't reject emails when starting the filter command fails. 1.5 [2005-07-31] - Handle condition of server refusing data transfers more gracefully. - Less chatty when setting timeouts fail - Drop privileges after binding to port. Allows listening on ports < 1024 - Ported to Solaris - Fix problem with binding to certain 'long' addresses 1.4.1 [2005-04-15] - Fixed bug (introduced in 1.4) when Header was not present. 1.4 [2005-03-24] - Documentation fixes [Sean Franklin] - Don't leak file descriptors when clamsmtpd can't connect to outgoing SMTP server [Chris Mason] - Now accepts special format arguments on 'Header' line [Olivier Beyssac] - Supress weird warnings when looking up names of local unix connections. 1.3 [2005-01-27] - Fixed crasher when outgoing connection couldn't be established - Removed erroneous chown line from clamsmtpd.sh 1.2 [2004-12-02] - XCLIENT support - Drop XCLIENT commands coming in from clients for security. - Added the sample virus_action.sh script to the distribution - Documentation fixes [Olivier Beyssac] 1.1 [2004-10-30] - Added CLIENT and SERVER variables to VirusAction script environment. - Even better logging for network errors. - Print out clamsmtp version in debug logs - Allow configuration of server keep alives (NOOPs). Default to none 1.0 [2004-10-21] - Removed user option from startup script (use User config option) - Don't send lines that are too long to syslog [Ben Mesman] - Stable release 0.9.6 [2004-10-10] - Fixed problem when filtering the last of a list of EHLO responses - Send NOOPs to the server when receiving data slowly from client to prevent timeouts on the server side. - Made the log line always keep the status, rather than dropping of the end in the case of many recipeints. 0.9.5 [2004-10-01] - Fixed problems with the select zeroing out timeouts. - Added support for setting the PidFile from the config file 0.9 [2004-09-23] - Don't quit when too many threads created - Restructured smtp passthru system so it can be used by other apps - Better IO and SMTP parsing - Changed default header to be similar to Amavis - Compiles and runs on systems without error checking mutexes - Ability to drop privileges and run as a different user [Rubio Vaughan] - Fixed config file bugs - Virus Actions. Run a script every time a virus is found. - By default don't use ClamAV sessions. This fixes several stability problems that were being experienced with clamd. 0.8 [2004-09-07] - clamsmtpd now uses a configuration file - Transparent proxy support [Andreas Steinmetz] - Compile option -Wall only enabled on debug builds - Sample script changed due to configuartion file - Fixed other minor bugs 0.7 [2004-08-29] - Added support for ESMTP [Andreas Steinmetz] - Fixed crash when too many connections established - Announce ourselves as 'clamsmtp' in EHLO/HELO responses which fixes 'loopback' problems with certain versions of Postfix 1.x - Better IO performance under heavy load - Fixed most warnings when compiled with -Wall - Fixed other minor bugs 0.6 [2004-08-17] - Proper adding of customized header [Berk D. Demir] - Fixes to documentation [Jasper Slits] 0.5 [2004-08-02] - Announce ourselves as 'clamsmtp' in banner to prevent loop warnings - Fixed endless loop that occurred on failure to connect out [João Carlos Mendes Luís] - Added option for leaving all files in temp directory (debugging purposes) - Prints version number when run with -v 0.4 [2004-07-22] - Option for quarantining files with viruses - Fixed problem with returning wrong SMTP error code - Handling timeouts properly - Fixed stupid problem with sockets not getting closed properly 0.3 [2004-07-20] - Small log format changes - When no port specified for out address, connect back to original IP - Bug fixes to address parsing and formatting code - Fixed problem with AV header not being added [Yamamoto Takao] - Send our own initial banner to prevent complaints about loops 0.2 [2004-07-09] - Initial public release - Sliently dropping viruses is the default - Limit to old SMTP (not ESMTP) - Added logging - Many bug fixes - Adds a header to email 0.1 [2004-07-08] - Initial implementation clamsmtp-1.10.2/INSTALL000066400000000000000000000366261521601501400144540ustar00rootroot00000000000000Installation Instructions ************************* Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free Software Foundation, Inc. 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UtpikjsHpHsb[ ^ P k  }x ,q4$adiv/#I  S  D s * N  q L ' qp]I6"t^I54tr6sr=\)~IH h3#define SMTP_FEAT_RSP "250 XFILTERED" CRLF#define SMTP_EHLO_RSP "250-smtp.passthru" CRLF#define SMTP_HELO_RSP "250 smtp.passthru" CRLF#define SMTP_BANNER "220 smtp.passthru" CRLF#define SMTP_XCLIENT "XCLIENT ADDR=%s" CRLF#define SMTP_RSET "RSET" CRLF#define SMTP_NOOP "NOOP" CRLF#define SMTP_DATA "DATA" CRLF#define SMTP_REJPREFIX "550 Content Rejected; "#define SMTP_OK "250 Ok" CRLF#define SMTP_NOTAUTH "554 Insufficient authorization" CRLF#define SMTP_NOTSUPP "502 Command not implemented" CRLF#define SMTP_FAILED "451 Local Error" CRLF#define SMTP_DATAINTERMED "354 Start mail input; end with ." CRLF#define SMTP_STARTFAILED "421 Local Error, cannot start thread" CRLF#define SMTP_STARTBUSY "421 Server busy, too many connections" CRLF#define SMTP_TOOLONG "500 Line too long" CRLF#define CRLF "\r\n" */ * DATA/* -----------------------------------------------------------------------spthread_t;} int fd; /* The file descriptor or -1 */ pthread_t tid; /* Written to by the main thread */{typedef struct spthread */ * STRUCTURES/* -----------------------------------------------------------------------#endif#include #ifdef LINUX_TRANSPARENT_PROXY#include "sppriv.h"#include "stringx.h"#include "sock_any.h"#include "compat.h"#include "usuals.h"#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define _GNU_SOURCE */ * Olivier Beyssac * Rubio Vaughan * Andreas Steinmetz * Stefan Walter * CONTRIBUTORS * * * DAMAGE. * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * * software without specific prior written permission. * used to endorse or promote products derived from this * * The names of contributors to this software may not be * other materials provided with the distribution. * the following disclaimer in the documentation and/or * above copyright notice, this list of conditions and * * Redistributions in binary form must reproduce the * following disclaimer. * copyright notice, this list of conditions and the * * Redistributions of source code must retain the above * * are met: * modification, are permitted provided that the following conditions * Redistribution and use in source and binary forms, with or without * * All rights reserved. * Copyright (c) 2004, Stefan Walter/*ad NiB9rlgYONM} return 0; } sp_messagex(NULL, LOG_DEBUG, "parsed option: %s: %s", p, t); errx(2, "invalid config line: %s", p); /* If not recognized then it's invalid */ if(sp_parse_option(p, t) == 0) /* Pass it through our options parsers */ p = trim_space(p); t = trim_space(t); t++; *t = 0;ad4slg(#_<# H  3 1 , S k e Y  M A  RIwv43rSIb60+ xZU9Hut { if(bind(sock, &SANY_ADDR(g_state.listenaddr), SANY_LEN(g_state.listenaddr)) != 0) unlink(g_state.listenname); if(SANY_TYPE(g_state.listenaddr) == AF_UNIX) /* Unlink the socket file if it exists */ setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&tru, sizeof(tru)); fcntl(sock, F_SETFD, fcntl(sock, F_GETFD, 0) | FD_CLOEXEC); } exit(1); sp_message(NULL, LOG_CRIT, "couldn't open socket"); { if(sock < 0) sock = socket(SANY_TYPE(g_state.listenaddr), SOCK_STREAM, 0); /* Create the socket */ siginterrupt(SIGTERM, 1); siginterrupt(SIGINT, 1); signal(SIGTERM, on_quit); signal(SIGINT, on_quit); signal(SIGHUP, SIG_IGN); signal(SIGPIPE, SIG_IGN); /* Handle some signals */ } openlog(g_state.name, 0, LOG_MAIL); /* Open the system log */ g_state.daemonized = 1; sp_messagex(NULL, LOG_DEBUG, "running as a daemon"); } exit(1); sp_message(NULL, LOG_ERR, "couldn't run as daemon"); { if(daemon(0, 0) == -1) /* Fork a daemon nicely here */ { if(g_state.debug_level == -1) /* When set to this we daemonize */ drop_privileges(); /* Drop privileges before daemonizing */ sp_messagex(NULL, LOG_DEBUG, "starting up (%s)...", VERSION); warnx("the " CFG_OUTADDR " option will be ignored when " CFG_TRANSPARENT " is enabled"); else if(g_state.outname != NULL && g_state.transparent) /* ... unless we're in transparent proxy mode */ errx(2, "no " CFG_OUTADDR " specified."); if(g_state.outname == NULL && !g_state.transparent) /* This option has no default, but is required ... */ } warnx("configuration file not found: %s", configfile); */ * file will cause the following checks to fail * as it comes from the app. Usually lack of a configuration * configuration file or not, but we can't do that any longer * We used to do a check here before whether it was the default /* { if(parse_config_file(configfile) == -1) /* Now parse the configuration file */ g_state.pidfile = pidfile; g_state.debug_level = dbg_level; errx(2, "invalid debug log level (must be between 1 and 4)"); if(!(dbg_level == -1 || dbg_level <= LOG_DEBUG)) ASSERT(g_state.name); ASSERT(configfile); int tru = 1; int sock;{int sp_run(const char* configfile, const char* pidfile, int dbg_level) } errx(1, "threading problem. can't create mutex or condition var"); pthread_mutex_init(&g_mutex, &g_mtxattr) != 0)#endif pthread_mutexattr_settype(&g_mtxattr, MUTEX_TYPE) ||#ifdef HAVE_ERR_MUTEX if(pthread_mutexattr_init(&g_mtxattr) != 0 || /* Create the main mutex and condition variable */ ASSERT(r == 1); r = sp_parse_option(CFG_LISTENADDR, DEFAULT_SOCKET); /* We need the default to parse into a useable form, so we do this: */ g_state.name = name; g_state.directory = _PATH_TMP; g_state.keepalives = DEFAULT_KEEPALIVES; g_state.timeout.tv_sec = DEFAULT_TIMEOUT; g_state.max_threads = DEFAULT_MAXTHREADS; g_state.debug_level = -1; /* Setup the defaults */ sp_message(NULL, LOG_DEBUG, "%s (%s)", name, VERSION); memset(&g_state, 0, sizeof(g_state)); ASSERT(name); int r;{void sp_init(const char* name) */ * BASIC RUN FUNCTIONALITY adpzaJI*gF76 D ~ } 9 8  c U :  u =   *  }Y@?tbaxuked#"]O4 rdY pthread_join(threads[i].tid, NULL); sp_messagex(NULL, LOG_DEBUG, "cleaning up completed thread"); } close(fd); shutdown(fd, SHUT_RDWR); sp_unlock(); threads[i].fd = -1; fd = threads[i].fd; sp_lock(); { if(threads[i].fd != -1) { if(threads[i].tid != 0) /* Clean up quit threads */ { for(i = 0; i < g_state.max_threads; i++) /* Quit all threads here */ sp_messagex(NULL, LOG_DEBUG, "waiting for threads to quit"); } } fd = -1; close(fd); shutdown(fd, SHUT_RDWR); write(fd, SMTP_STARTBUSY, KL(SMTP_STARTBUSY)); sp_messagex(NULL, LOG_ERR, "too many connections open (max %d). sent busy response", g_state.max_threads); { if(fd != -1) /* Check to make sure we have a thread */ } } break; fd = -1; sp_messagex(NULL, LOG_DEBUG, "created thread for connection"); } break; fd = -1; close(fd); shutdown(fd, SHUT_RDWR); write(fd, SMTP_STARTFAILED, KL(SMTP_STARTFAILED)); sp_message(NULL, LOG_ERR, "couldn't create thread"); errno = r; { if(r != 0) (void*)(threads + i)); r = pthread_create(&(threads[i].tid), NULL, thread_main, threads[i].fd = fd; { if(fd != -1 && threads[i].tid == 0) /* Start a new thread if neccessary */ }#endif } sp_messagex(NULL, LOG_DEBUG, "active connection thread: %x", (int)threads[i].tid); /* For debugging connection problems: */ { else#ifdef _DEBUG } threads[i].tid = 0; pthread_join(threads[i].tid, NULL); sp_messagex(NULL, LOG_DEBUG, "cleaning up completed thread"); { if(x == -1) sp_unlock(); x = threads[i].fd; sp_lock(); { if(threads[i].tid != 0) /* Find a thread to run or clean up old threads */ { for(i = 0; i < g_state.max_threads; i++) /* Look for thread and also clean up others */ fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC); sp_message(NULL, LOG_DEBUG, "couldn't set timeouts on incoming connection"); setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) < 0) if(setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) < 0 || /* Set timeouts on client */ } continue; break; if(sp_is_quit()) }; break; sp_message(NULL, LOG_ERR, "couldn't accept a connection"); default: break; sp_message(NULL, LOG_ERR, "couldn't accept a connection"); case ECONNABORTED: break; case EAGAIN: case EINTR: { switch(errno) { if(fd == -1) fd = accept(sock, NULL, NULL);ad0}x\PJ$#vQD > 5  y t d b a 7 5 $ #  x Y S N 6 0  p j I ' !   q o ^ X .  {yN5 w^IH{hg)i&udc=;:mhNM spio_attach(ctx, &(ctx->client), client, &peeraddr); /* Setup the incoming connection. This also fills in peeraddr for us */ ASSERT(client != -1); const char* outname; char buf[MAXPATHLEN]; struct sockaddr_any* outaddr; struct sockaddr_any addr; struct sockaddr_any peeraddr;{static int make_connections(spctx_t* ctx, int client)} return (void*)(ret == 0 ? 0 : 1); sp_unlock(); thread->fd = -1; sp_lock(); /* mark this as done */ } done_thread(ctx); spio_write_data(ctx, &(ctx->client), SMTP_STARTFAILED); if(!processing && ret == -1 && spio_valid(&(ctx->client))) /* Let the client know about fatal errors */ { if(ctx)cleanup: ret = smtp_passthru(ctx); processing = 1; /* call the processor */ } RETURN(-1); /* new_context() should have already logged reason */ close(fd); /* Special case. We don't have a context so clean up descriptor */ { if(sp_is_quit() || (ctx = init_thread(fd)) == NULL) /* Sometimes we get to this point and then quit is noted */ sp_unlock(); fd = thread->fd; /* Get the client socket */ sp_lock(); siginterrupt(SIGTERM, 1); siginterrupt(SIGINT, 1); ASSERT(thread); int fd; int ret = 0; int processing = 0; spctx_t* ctx = NULL; spthread_t* thread = (spthread_t*)arg;{static void* thread_main(void* arg)} cb_del_context(ctx); cleanup_context(ctx); /* Clean up file stuff */ spio_disconnect(ctx, &(ctx->server)); spio_disconnect(ctx, &(ctx->client)); ASSERT(ctx);{static void done_thread(spctx_t* ctx)} ctx->logline[0] = 0; } ctx->xforwardhelo = NULL; free(ctx->xforwardhelo); { if(ctx->xforwardhelo) } ctx->xforwardaddr = NULL; free(ctx->xforwardaddr); { if(ctx->xforwardaddr) } ctx->sender = NULL; free(ctx->sender); { if(ctx->sender) } ctx->recipients = NULL; free(ctx->recipients); { if(ctx->recipients) } ctx->cachename[0] = 0; unlink(ctx->cachename); { if(ctx->cachename[0]) } ctx->cachefile = NULL; fclose(ctx->cachefile); { if(ctx->cachefile) ASSERT(ctx);{static void cleanup_context(spctx_t* ctx)} return ctx; } } ctx = NULL; cb_del_context(ctx); { if(make_connections(ctx, fd) == -1) /* Connect to the outgoing server ... */ sp_messagex(ctx, LOG_DEBUG, "processing %d on thread %x", fd, (int)pthread_self()); sp_unlock(); g_unique_id++; if(g_unique_id == 0) /* We don't care about wraps, but we don't want zero */ ctx->id = g_unique_id++; /* Assign a unique id to the connection */ sp_lock(); spio_init(&(ctx->client), "CLIENT"); spio_init(&(ctx->server), "SERVER"); memset(ctx, 0, sizeof(*ctx)); { if(ctx) ctx = cb_new_context(); spctx_t* ctx;{static spctx_t* init_thread(int fd)} free(threads); } } threads[i].tid = 0;adszW8/mdE } v l  w '   V P  o i O 6  b  u'nh\;~^ ZXK8KHlD8~g]C+'& /* Client has data available, read a line and process */ } RETURN(-1); neterror = 1; { if(mask == ~0) mask = spio_select(ctx, &(ctx->client), &(ctx->server), NULL); { while(!sp_is_quit()) #define S_LINE ctx->server.line #define C_LINE ctx->client.line spio_valid(&(ctx->server))); ASSERT(spio_valid(&(ctx->client)) && int xclient_sent = 0; /* Have we sent an XCLIENT command? */ int xclient_sup = 0; /* Is XCLIENT supported? */ /* XCLIENT is for use in access control */ int filter_host = 0; /* Next response is 250 hostname, which we change */ int first_rsp = 1; /* The first 220 response from server to be filtered */ int neterror = 0; unsigned int mask; int r, cont, ret = 0; const char* p; char* t;{static int smtp_passthru(spctx_t* ctx) */ * SMTP HANDLING/* ----------------------------------------------------------------------------------} return 0; return -1; if(spio_connect(ctx, &(ctx->server), outaddr, outname) == -1) /* Connect to the server */ } outname = "unknown"; else outname = buf; if(sock_any_ntop(outaddr, buf, MAXPATHLEN, 0) != -1) { if(outaddr != &(g_state.outaddr)) /* Reparse name if needed */ } sp_messagex(ctx, LOG_WARNING, "couldn't resolve " CFG_OUTADDR ": %s", g_state.outname); else memcpy(&(g_state.outaddr), &addr, sizeof(g_state.outaddr)); if(sock_any_pton(g_state.outname, &addr, SANY_OPT_DEFPORT(25)) != -1) /* Resolve any DNS name again */ { else /* Not transparent proxy or loopback */#endif } outaddr = &addr; memcpy(&(addr.s.in.sin6_addr), &(peeraddr.s.in.sin6_addr), sizeof(addr.s.in.sin6_addr)); memcpy(&addr, &(g_state.outaddr), sizeof(addr)); /* Use the incoming IP as the default */ { outaddr->s.in.in6.sin_addr.s_addr == 0) else if(SANY_TYPE(*outaddr) == AF_INET6 && /* IPv6 loopback? */#ifdef HAVE_INET6 } outaddr = &addr; memcpy(&(addr.s.in.sin_addr), &(peeraddr.s.in.sin_addr), sizeof(addr.s.in.sin_addr)); memcpy(&addr, &(g_state.outaddr), sizeof(addr)); /* Use the incoming IP as the default */ { outaddr->s.in.sin_addr.s_addr == 0) else if(SANY_TYPE(*outaddr) == AF_INET && /* Check for loopback option */ } outaddr = &addr; } return -1; sp_messagex(ctx, LOG_ERR, "loop detected in transparent proxying"); { if(sock_any_cmp(&addr, &peeraddr, SANY_OPT_NOPORT) == 0) /* Check address types */ } return -1; sp_message(ctx, LOG_ERR, "couldn't get source address for transparent proxying"); {#endif if(getsockname(ctx->client.fd, &SANY_ADDR(addr), &SANY_LEN(addr)) == -1)#else if(getsockopt(ctx->client.fd, SOL_IP, SO_ORIGINAL_DST, &SANY_ADDR(addr), &SANY_LEN(addr)) == -1)#ifdef LINUX_TRANSPARENT_PROXY SANY_LEN(addr) = sizeof(addr); memset(&addr, 0, sizeof(addr)); { if(g_state.transparent) /* For transparent proxying we have to discover the address to connect to */ outname = g_state.outname; outaddr = &(g_state.outaddr); /* Create the server connection address */ sp_messagex(ctx, LOG_INFO, "accepted connection from: %s", ctx->client.peername);adbwvD-W76 A   n N x : , r ] I V65~XW1 eUp!~;-~]OB2bR { is_first_word(C_LINE, BDAT_CMD, KL(BDAT_CMD))) else if(is_first_word(C_LINE, STARTTLS_CMD, KL(STARTTLS_CMD)) || */ * This is just for errant clients. * filtered out their service extensions earlier in the EHLO response. * We don't like these commands. Filter them out. We should have /* } filter_host = 1; /* Filter host as with EHLO above */ xclient_sup = 1; sp_messagex(ctx, LOG_DEBUG, "XCLIENT support assumed"); { else if(is_first_word(C_LINE, HELO_CMD, KL(HELO_CMD))) */ * by backing up one on the protocol. * for security reasons, so that a client can't get around filtering * We always support XCLIENT on a HELO type connection. We do this /* } filter_host = 1; /* EHLO can have multline responses so we set a flag */ { else if(is_first_word(C_LINE, EHLO_CMD, KL(EHLO_CMD))) */ * to prevent complaints about mail loops * We need our response to HELO and EHLO to be modified in order /* } continue; /* Command handled */ cleanup_context(ctx); /* Done with that email */ sp_messagex(ctx, LOG_INFO, "%s", ctx->logline); /* Print the log out for this email */ RETURN(-1); if(cb_check_data(ctx) == -1) */ * transparent * sending of the data to the server, making the av check * Now go into scan mode. This also handles the eventual /* RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_DATAINTERMED) == -1) /* Send back the intermediate response to the client */ { if(is_first_word(C_LINE, DATA_CMD, KL(DATA_CMD))) /* Handle the DATA section via our AV checker */ } xclient_sent = 1; sp_messagex(ctx, LOG_WARNING, "server didn't accept XCLIENT"); if(!get_successful_rsp(S_LINE, NULL)) RETURN(-1); if(read_server_response(ctx) == -1) RETURN(-1); if(spio_write_dataf(ctx, &(ctx->server), SMTP_XCLIENT, ctx->client.peername) == -1) sp_messagex(ctx, LOG_DEBUG, "sending XCLIENT"); { if(xclient_sup && !xclient_sent && g_state.xclient) */ * connection command. * At this point we may want to send our XCLIENT. This is a per /* filter_host = 0; /* Only valid after EHLO or HELO commands */ } continue; RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_TOOLONG) == -1) { if(LINE_TOO_LONG(r)) /* We don't let clients send really long lines */ RETURN(0); if(r == 0) /* Client disconnected, we're done */ RETURN(-1); if((r = spio_read_line(ctx, &(ctx->client), SPIO_DISCARD)) == -1) { if(mask & 1)ad ^V6!^ h Z w b < "   } a ` J @ ? u t ] B A i " Ep<,<;~l^]LD9 cleanup_context(ctx); /* A new email so cleanup */ RETURN(-1); cont ? SMTP_EHLO_RSP : SMTP_HELO_RSP) == -1) if(spio_write_data(ctx, &(ctx->client), sp_messagex(ctx, LOG_DEBUG, "intercepting host response"); filter_host = 0; * sure to only replace the first one. */ /* Can have multi-line responses, and we want to be { if(filter_host) */ * filter that to prevent loopback errors. * on the 250 response after a EHLO or HELO. This is where we * Certain mail servers (Postfix 1.x in particular) do a loop check /* { if((p = get_successful_rsp(S_LINE, &cont)) != NULL) } } continue; /* Command handled */ RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_BANNER) == -1) sp_messagex(ctx, LOG_DEBUG, "intercepting initial response"); { if(is_first_word(S_LINE, START_RSP, KL(START_RSP))) first_rsp = 0; { if(first_rsp) */ * an arbitrary but identifying string. * as their domain name, and RFC 2821 allows us to use * instead. No properly configured server would have this * expects one of those to be its own name. We use 'clamsmtp' * 'localhost' don't work because the receiving mail server * In different situations using the local hostname or * * to the client server that we're in a wierd loop. * This allows us to change header so that it doesn't look * We intercept the first response we get from the server. /* sp_messagex(ctx, LOG_WARNING, "SMTP response line too long. discarded extra"); if(LINE_TOO_LONG(r)) RETURN(0); if(r == 0) RETURN(-1); if((r = spio_read_line(ctx, &(ctx->server), SPIO_DISCARD)) == -1) { if(mask & 2) /* Server has data available, read a line and forward */ } continue; RETURN(-1); if(spio_write_data(ctx, &(ctx->server), C_LINE) == -1) /* All other commands just get passed through to server */ } continue; /* Command handled */ RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_NOTAUTH) == -1) sp_messagex(ctx, LOG_WARNING, "client attempted use of privileged XCLIENT feature"); { else if(is_first_word(C_LINE, XCLIENT_CMD, KL(XCLIENT_CMD))) */ * privileged IP address to change an audit trail or relay etc... * from our client through. This could lead to a client using our * For security reasons we're not about to forward any XCLIENTs /* } continue; /* Command handled */ RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_NOTSUPP) == -1) sp_messagex(ctx, LOG_DEBUG, "ESMTP feature not supported");ad[PP@ x .  F i  R 9  r P 6 za?)m: }Y)p^+ae* r`C0[ * variables (see sp_setup_forked). * we store address for use in our forked process environment * If the client sends an XFORWARD, and the server accepted it, /* } } strcat(ctx->recipients, t); ctx->recipients[0] = 0; else strcat(ctx->recipients, "\n"); if(r != 0) /* Recipients are separated by lines */ { if(ctx->recipients) ctx->recipients = (char*)reallocf(ctx->recipients, r + strlen(t) + 2); r = ctx->recipients ? strlen(ctx->recipients) : 0; /* Make note of the recipient for later */ sp_add_log(ctx, "to=", t); t = parse_address(C_LINE + r); { else if((r = check_first_word(C_LINE, TO_CMD, KL(TO_CMD), SMTP_DELIMS)) > 0) /* RCPT TO (that the server accepted) */ } strcpy(ctx->sender, t); if(ctx->sender) ctx->sender = (char*)reallocf(ctx->sender, strlen(t) + 1); /* Make note of the sender for later */ sp_add_log(ctx, "from=", t); t = parse_address(C_LINE + r); { if((r = check_first_word(C_LINE, FROM_CMD, KL(FROM_CMD), SMTP_DELIMS)) > 0) /* MAIL FROM (that the server accepted) */ } } continue; } RETURN(-1); if(spio_write_data(ctx, &(ctx->client), SMTP_FEAT_RSP) == -1) { if(!cont) */ * to replace it with something else * If this is the last line in the EHLO response we need /* sp_messagex(ctx, LOG_DEBUG, "filtered ESMTP feature: %s", trim_space((char*)p)); { is_first_word(p, ESMTP_XEXCH50, KL(ESMTP_XEXCH50))) is_first_word(p, ESMTP_XCLIENT, KL(ESMTP_XCLIENT)) || is_first_word(p, ESMTP_CHECK, KL(ESMTP_CHECK)) || is_first_word(p, ESMTP_BINARY, KL(ESMTP_BINARY)) || is_first_word(p, ESMTP_CHUNK, KL(ESMTP_CHUNK)) || is_first_word(p, ESMTP_TLS, KL(ESMTP_TLS)) || if(is_first_word(p, ESMTP_PIPELINE, KL(ESMTP_PIPELINE)) || } xclient_sup = 1; sp_messagex(ctx, LOG_DEBUG, "XCLIENT supported"); { if(is_first_word(p, ESMTP_XCLIENT, KL(ESMTP_XCLIENT))) */ * wants XCLIENTs or not. (In contrast to old SMTP above). * On ESMTP connections we let the server tell us whether it /* { if(is_first_word(C_LINE, EHLO_CMD, KL(EHLO_CMD))) */ * to support. For example pipelining or TLS. * Filter out any EHLO responses that we can't or don't want /* } continue;adz9#\F1 j <  R @   z y c Q K B 9 8 T ) % $ ` X S /    wqlQONjXC(d^YN9-nf`C>|vra_^&$lkJ) zy strlcat(t, prefix, l); strlcat(t, ", ", l); if(ctx->logline[0] != 0) *t = 0; l = SP_LOG_LINE_LEN - l; t += l; l = SP_LOG_LINE_LEN - x; if(l + x >= SP_LOG_LINE_LEN) x = 2 + strlen(prefix) + strlen(line) + 1; /* Add up necessary lengths */ ASSERT(l <= SP_LOG_LINE_LEN); int x; int l = strlen(t); char* t = ctx->logline;{void sp_add_log(spctx_t* ctx, char* prefix, char* line)} return NULL; } return line + 4; *cont = (line[3] == '-'); if(cont) { (line[3] == ' ' || line[3] == '-')) if(line[0] == '2' && isdigit(line[1]) && isdigit(line[2]) && line = trim_start(line); */ * and the continued response '250-xxxx' type * We check for both '250 xxx' type replies /*{static const char* get_successful_rsp(const char* line, int* cont)} return t; *e = 0; return NULL; if(!e) } e = t + strcspn(t, " \t"); { else } e = strchr(t, ']'); t++; { if(*t == '[') /* Find the end of the thingy */ return NULL; if(!*t) t = trim_start(t + 1); return NULL; if(*t != '=') t = trim_start(t + strlen(part)); /* equals sign and surrounding */ return NULL; if(!t) t = strcasestr(line, part); char* e; char* t;{static char* parse_xforward(char* line, const char* part)} return trim_end(line); } } return line; line++; *t = 0; { if((t = strchr(line, '>')) != NULL) { if(line[0] == '<') return("<>"); if(strncmp(line, "<>", 2) == 0) */ * as well as accept other addresses. * We parse out emails in the form of /* line = trim_start(line); char* t;{static char* parse_address(char* line) */ * SMTP PASSTHRU FUNCTIONS FOR DATA CHECK/* -----------------------------------------------------------------------------} return ret; spio_write_data(ctx, &(ctx->client), SMTP_FAILED); if(!neterror && ret == -1 && spio_valid(&(ctx->client)))cleanup: } } continue; RETURN(-1); if(spio_write_data(ctx, &(ctx->client), S_LINE) == -1) } } cleanup_context(ctx); { else if(is_first_word(C_LINE, RSET_CMD, KL(RSET_CMD))) /* RSET */ } } strcpy(ctx->xforwardhelo, t); if(ctx->xforwardhelo) ctx->xforwardhelo = (char*)reallocf(ctx->xforwardhelo, strlen(t) + 1); { if((t = parse_xforward (C_LINE + KL(XFORWARD_CMD), "HELO"))) } strcpy(ctx->xforwardaddr, t); if(ctx->xforwardaddr) ctx->xforwardaddr = (char*)reallocf(ctx->xforwardaddr, strlen(t) + 1); { if((t = parse_xforward (C_LINE + KL(XFORWARD_CMD), "ADDR"))) { else if(is_first_word(C_LINE, XFORWARD_CMD, KL(XFORWARD_CMD))) */adOxca`.,! B/" ^  n h c !   p b ` _ % #    Z L  y t L 4 .   ^+"ve# lfa83caK50Sq\ZYqO if(time(&t) == (time_t)-1 || /* Get a basic date like: 'Wed Jun 30 21:49:08 1993' */ time_t t; struct tm t2; size_t date_len;{static void make_date(spctx_t* ctx, char* date)/* Important: |date| should be at least MAX_DATE_LENGTH long */} return count; sp_messagex(ctx, LOG_DEBUG, "wrote %d bytes to cache", count); return -1; if(sp_write_data(ctx, NULL, 0) < 0) /* End the caching */ } return -1; /* Message already printed */ if((r = sp_write_data(ctx, data, r)) < 0) count += r; return -1; /* Message already printed */ if(r < 0) { while((r = sp_read_data(ctx, &data)) != 0) const char* data; int r, count = 0;{int sp_cache_data(spctx_t* ctx)} return len; } return -1; sp_message(ctx, LOG_ERR, "couldn't write to cache file: %s", ctx->cachename); { if(ferror(ctx->cachefile)) fwrite(buf, 1, len, ctx->cachefile); } sp_messagex(ctx, LOG_DEBUG, "created cache file: %s", ctx->cachename); fcntl(tfd, F_SETFD, fcntl(tfd, F_GETFD, 0) | FD_CLOEXEC); } return -1; sp_message(ctx, LOG_ERR, "couldn't open cache file"); close(tfd); if(tfd != -1) { (ctx->cachefile = fdopen(tfd, "w")) == NULL) if((tfd = mkstemp(ctx->cachename)) == -1 || g_state.directory, g_state.name); snprintf(ctx->cachename, MAXPATHLEN, "%s/%s.XXXXXX", unlink(ctx->cachename); if(ctx->cachename[0]) /* Make sure afore mentioned file is gone */ int tfd; { if(!ctx->cachefile) /* Make sure we have a file open */ } return r; } ctx->cachefile = NULL; } r = -1; sp_message(ctx, LOG_ERR, "couldn't write to cache file: %s", ctx->cachename); { if(fclose(ctx->cachefile) == EOF) { if(ctx->cachefile) { if(!buf) /* When a null buffer close the cache file */ ASSERT(ctx); int r = 0; {int sp_write_data(spctx_t* ctx, const char* buf, int len)} return r; *data = ctx->client.line; ctx->_crlf = (strcmp(CRLF, ctx->client.line + (r - KL(CRLF))) == 0); /* Check if this line ended with a CRLF */ return 0; if(ctx->_crlf && strcmp(ctx->client.line, DATA_END_SIG) == 0) } do_server_noop(ctx); if((ctx->server.last_action + g_state.keepalives) < time(NULL)) */ * to let it know we're still around. * had any interaction with the server recently then send something * During this time we're just reading from the client. If we haven't /* { if(g_state.keepalives > 0) }; return -1; /* Message already printed */ case -1: return -1; sp_messagex(ctx, LOG_ERR, "unexpected end of data from client"); case 0: { switch(r = spio_read_line(ctx, &(ctx->client), SPIO_QUIET)) *data = NULL; ASSERT(data); ASSERT(ctx); int r;{int sp_read_data(spctx_t* ctx, const char** data)} trim_end(t); /* Skip later white space */ strlcat(t, line, l); line = trim_start(line); /* Skip initial white space */ad }t_OIB. = \ 9   N M & z N 2  b ~ | { 9 \LGe[@2qZE,wYB6 S3}]E.~^F/ case '%': break; p += l; remaining -= l; strncpy(p, date, remaining); l = strlen(date); make_date(ctx, date); if(date[0] == 0) case 'd': break; p += l; remaining -= l; strncpy(p, ctx->client.localname, remaining); l = strlen(ctx->client.localname); case 'l': break; p += l; remaining -= l; strncpy(p, ctx->client.peername, remaining); l = strlen(ctx->client.peername); case 'i': { switch(*(++f)) { else if(f[0] == '%' && f[1] != 0) */ * %d: date * %l: server's IP * %i: client's IP * Special symbols: /* } --remaining; ++p; } break; *p = *f; default: break; *p = '\t'; case 't': break; *p = '\n'; case 'n': break; *p = '\r'; case 'r': { switch(*(++f)) { if(f[0] == '\\' && f[1] != 0) /* A backslash escapes certain characters */ { for(f = format_str; *f && remaining > 0; f++) /* Parse the format string and replace special characters with our data */ p = header; remaining = MAX_HEADER_LENGTH - 1; date[0] = 0; char* p; const char* f; int remaining, l; char date[MAX_DATE_LENGTH];{static int make_header(spctx_t* ctx, const char* format_str, char* header)/* Important: |header| should be a buffer of MAX_HEADER_LENGTH */} date[MAX_DATE_LENGTH - 1] = 0; /* Break it off just in case */ }#endif tzname[lt->tm_isdst ? 1 : 0]); " %+03d%02d (%s)", (int)(off / HOUR_MIN), (int)(abs(off) % HOUR_MIN), snprintf(date + date_len, MAX_DATE_LENGTH - date_len, off += 1; else if (lt->tm_sec >= gmt.tm_sec + MIN_SEC) off -= 1; if (lt->tm_sec <= gmt.tm_sec - MIN_SEC) off += DAY_MIN; else if (lt->tm_yday > gmt.tm_yday) off -= DAY_MIN; else if (lt->tm_yday < gmt.tm_yday) off += DAY_MIN; else if (lt->tm_year > gmt.tm_year) off -= DAY_MIN; if (lt->tm_year < gmt.tm_year) off = (lt->tm_hour - gmt.tm_hour) * HOUR_MIN + lt->tm_min - gmt.tm_min; lt = localtime(&t); gmt = *gmtime(&t); int off; struct tm *lt; struct tm gmt; #define MIN_SEC 60 #define HOUR_MIN 60 #define DAY_MIN (24 * HOUR_MIN) /* Apparently Solaris needs this nasty hack.... */#else tzname[t2.tm_isdst ? 1 : 0]); (int)(timezone / 3600), (int)(timezone % 3600), snprintf(date + date_len, MAX_DATE_LENGTH - date_len, " %+03d%02d (%s)", const char *tzname[2] = { t2.tm_zone, t2.tm_zone }; time_t timezone = t2.tm_gmtoff;#ifdef HAVE_TM_GMTOFF { date_len = strlen(date); trim_end(date); } return; date[0] = 0; sp_message(ctx, LOG_WARNING, "unable to get date for header"); { !asctime_r(&t2, date)) !localtime_r(&t, &t2) || ad xkTB8/"iU w V : * ) k L    Y E ? 6  n m 3 ~ 9 ,    i) <HB6h1%AU:" if(ferror(file)) } RETURN(-1); if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)line, rc) == -1) } } header[0] = '\0'; RETURN(-1); spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)CRLF, KL(CRLF)) == -1) if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)header, header_len) == -1 || { if(is_blank_line(line)) */ * At this point we add in our virus checked header. * The first blank line we see means the headers are done. /* { if(header[0] != '\0') strncpy(line, ". " CRLF, SP_LINE_LENGTH); if(strcmp(line, "." CRLF) == 0) */ * have filters that accidentally put this in. * This won't occur much in clamsmtpd, but proxsmtpd might * it doesn't end the email. We do this by adding a space. * If the line is . we need to change it so that /* { while((rc = getline(&line, &line_len, file)) != -1) /* Transfer actual file data */ } header[0] = '\0'; RETURN(-1); spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)CRLF, KL(CRLF)) == -1) if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)header, header_len) == -1 || { if(header[0] != '\0' && header_prepend) /* If we have to prepend the header, do it */ } header_prepend = 1; if(is_first_word(RCVD_HEADER, header, KL(RCVD_HEADER))) header_len = make_header(ctx, headertmpl, header); { if(headertmpl) sp_messagex(ctx, LOG_DEBUG, "sending from cache file: %s", ctx->cachename); } RETURN(0); sp_messagex(ctx, LOG_DEBUG, "server refused data transfer"); RETURN(-1); if(spio_write_data(ctx, &(ctx->client), ctx->server.line) == -1) { if(!is_first_word(ctx->server.line, DATA_RSP, KL(DATA_RSP))) /* If server returns an error then tell the client */ RETURN(-1); if(read_server_response(ctx) == -1) RETURN(-1); if(spio_write_data(ctx, &(ctx->server), SMTP_DATA) == -1) /* Ask the server for permission to send data */ } RETURN(-1); sp_message(ctx, LOG_ERR, "couldn't open cache file: %s", ctx->cachename); { if(file == NULL) file = fopen(ctx->cachename, "r"); /* Open the file */ RETURN(-1); if((line = (char *)malloc(line_len)) == NULL) line_len = SP_LINE_LENGTH; /* Alloc line buffer */ memset(header, 0, sizeof(header)); ASSERT(!ctx->cachefile); /* File must be closed */ ASSERT(ctx->cachename[0]); /* Must still be around */ ssize_t rc; int header_prepend = 0; size_t header_len, line_len; char header[MAX_HEADER_LENGTH] = ""; char *line; int ret = 0; FILE* file = 0;{int sp_done_data(spctx_t* ctx, const char *headertmpl)} return l >= MAX_HEADER_LENGTH ? MAX_HEADER_LENGTH - 1 : l; l = p - header; header[MAX_HEADER_LENGTH - 1] = 0; p[1] = 0; if((p + 1) < (header + MAX_HEADER_LENGTH)) } } remaining--; *(p++) = *f; { else } }; break; sp_messagex(ctx, LOG_WARNING, "invalid header symbol: %%%c", *f); default: break; ++p; *p = '%'; ad2VP$F  x k 3 .    t a \ @   a O J & 9  } j i * caVQ$ne9ul^\[20 ~|OM) to[1(g4/e21 setenv("SERVER", ctx->server.peername, 1); if(spio_valid(&(ctx->server))) setenv("REMOTE_HELO", ctx->xforwardhelo, 1); if(ctx->xforwardhelo) setenv("REMOTE", ctx->xforwardaddr, 1); if(ctx->xforwardaddr) setenv("CLIENT", ctx->client.peername, 1); if(spio_valid(&(ctx->client))) setenv("EMAIL", ctx->cachename, 1); if(file && ctx->cachename[0]) setenv("RECIPIENTS", ctx->recipients, 1); if(ctx->recipients) setenv("SENDER", ctx->sender, 1); if(ctx->sender) siginterrupt(SIGTERM, 0); siginterrupt(SIGINT, 0); signal(SIGTERM, SIG_DFL); signal(SIGINT, SIG_DFL); signal(SIGHUP, SIG_DFL); signal(SIGPIPE, SIG_DFL); /* Signals we've messed with */{void sp_setup_forked(spctx_t* ctx, int file) } } spio_read_line(ctx, &(ctx->server), SPIO_DISCARD); if(spio_write_data(ctx, &(ctx->server), SMTP_NOOP) != -1) { if(spio_valid(&(ctx->server))){static void do_server_noop(spctx_t* ctx)} return 0; sp_messagex(ctx, LOG_WARNING, "SMTP response line too long. discarded extra"); if(LINE_TOO_LONG(r)) } return 0; spio_write_data(ctx, &(ctx->client), SMTP_FAILED); /* Tell the client it went wrong */ sp_messagex(ctx, LOG_ERR, "server disconnected unexpectedly"); { if(r == 0) return -1; if((r = spio_read_line(ctx, &(ctx->server), SPIO_DISCARD)) == -1) /* Read response line from the server */ int r;{static int read_server_response(spctx_t* ctx)} return 0; return -1; read_server_response(ctx) == -1) if(spio_write_data(ctx, &(ctx->server), SMTP_RSET) == -1 || /* Tell the server to forget about the current message */ return -1; if(spio_write_data(ctx, &(ctx->client), smtp_status) == -1) } smtp_status = buf; buf[sizeof(buf) - 1] = 0; smtp_status, crlf ? CRLF : ""); snprintf(buf, sizeof(buf), "%s%.256s%s", pref ? SMTP_REJPREFIX : "", /* Note that we truncate long lines */ { if(pref || crlf) crlf = 1; if(strcmp(smtp_status + (len - KL(CRLF)), CRLF) != 0) /* We need a CRLF at the end */ pref = 1; if(x == 0 || t != smtp_status + 3) /* We need 3 digits and CRLF at the end for a premade SMTP message */ len = strlen(smtp_status); x = strtol(smtp_status, &t, 10); smtp_status = SMTP_FAILED; if(smtp_status == NULL) int crlf = 0; int pref = 0; int len, x; char* t = NULL; char buf[256 + KL(SMTP_REJPREFIX) + KL(CRLF) + 1];{int sp_fail_data(spctx_t* ctx, const char* smtp_status)} return ret; fclose(file); /* read-only so no error check */ if(file) free(line); if(line) cleanup: RETURN(-1); if(spio_write_data(ctx, &(ctx->client), ctx->server.line) == -1) RETURN(-1); if(read_server_response(ctx) == -1) /* Okay read the response from the server and echo it to the client */ sp_messagex(ctx, LOG_DEBUG, "sent email data"); } RETURN(-1); spio_write_data(ctx, &(ctx->client), SMTP_FAILED); /* Tell the client it went wrong */ { if(ferror(file) || spio_write_data(ctx, &(ctx->server), DATA_END_SIG) == -1) sp_message(ctx, LOG_ERR, "error reading cache file: %s", ctx->cachename);ad3 ,uiec@'&hbC/)  O F  R E 2 p O F + ) ( B @ 0 +  ~ o m b _ Q ? 8 5 ' [UTN(% zt'!XRPOZT{jd[+%wql93 ret = 1; errx(2, "invalid setting: " CFG_KEEPALIVES); if(*t || g_state.keepalives < 0) g_state.keepalives = strtol(value, &t, 10); { else if(strcasecmp(CFG_KEEPALIVES, name) == 0) } ret = 1; errx(2, "invalid setting: " CFG_TIMEOUT); if(*t || g_state.timeout.tv_sec <= 0) g_state.timeout.tv_sec = strtol(value, &t, 10); { else if(strcasecmp(CFG_TIMEOUT, name) == 0) } ret = 1; errx(2, "invalid setting: " CFG_MAXTHREADS " (must be between 1 and 1024)"); if(*t || g_state.max_threads <= 1 || g_state.max_threads >= 1024) g_state.max_threads = strtol(value, &t, 10); { if(strcasecmp(CFG_MAXTHREADS, name) == 0) int ret = 0; char* t;{int sp_parse_option(const char* name, const char* value) */ * CONFIG FILE/* -----------------------------------------------------------------------------} } sp_message(NULL, LOG_CRIT, "threading problem. couldn't unlock mutex"); errno = r; { if(r != 0) int r = pthread_mutex_unlock(&g_mutex);{void sp_unlock() }#endif } sp_message(NULL, LOG_DEBUG, "thread unblocked: %d", pthread_self()); { else if(wait)#ifdef _DEBUG } sp_message(NULL, LOG_CRIT, "threading problem. couldn't lock mutex"); errno = r; { if(r != 0) #endif r = pthread_mutex_lock(&g_mutex);#else } r = pthread_mutex_lock(&g_mutex); sp_message(NULL, LOG_DEBUG, "thread will block: %d", pthread_self()); wait = 1; { if(r == EBUSY) r = pthread_mutex_trylock(&g_mutex);#ifdef _DEBUG #endif int wait = 0;#ifdef _DEBUG int r;{void sp_lock() */ * LOCKING/* -----------------------------------------------------------------------} va_end(ap); vmessage(ctx, level, 1, msg, ap); va_start(ap, msg); va_list ap;{void sp_message(spctx_t* ctx, int level, const char* msg, ...)} va_end(ap); vmessage(ctx, level, 0, msg, ap); va_start(ap, msg); va_list ap;{void sp_messagex(spctx_t* ctx, int level, const char* msg, ...)} vwarnx(buf, ap); else vsyslog(level, buf, ap); if(g_state.daemonized) /* Either to syslog or stderr */ buf[MAX_MSGLEN - 1] = 0; strncat(buf, strerror(e), MAX_M strncat(buf, strerror(e), MAX_MSGLEN - 1); sp_lock(); strerror_r(e, buf + len, MAX_MSGLEN - len); */ len = strlen(buf); /* strerror_r doesn't want to work for us for some reason { if(err) snprintf(buf, MAX_MSGLEN, "%s%s", msg, err ? ": " : ""); else snprintf(buf, MAX_MSGLEN, "%06X: %s%s", ctx->id, msg, err ? ": " : ""); if(ctx) ASSERT(msg); } return; if(g_state.debug_level < level) { else } return; if(level >= LOG_DEBUG) { if(g_state.daemonized) int e = errno; char buf[MAX_MSGLEN] = { 0, };{ const char* msg, va_list ap)static void vmessage(spctx_t* ctx, int level, int err, #define MAX_MSGLEN 1024const char kMsgDelimiter[] = ": "; */ * LOGGING/* ----------------------------------------------------------------------------------} setenv("TMPDIR", g_state.directory, 1); adTC=0X7&  n  \   j G 6 0 + w q l < 6  m ` ; * $ # fdPB5(f4Mb% p\XD?ja:\O /* Null terminate and split value part */ errx(2, "invalid config line: %s", p); if(t == NULL) t = strchr(p, ':'); /* Look for the break between name: value */ continue; if(*p == 0 || *p == '#') /* Comments and empty lines */ p = trim_start(p); n = t + 1; p = n; /* Do this before cleaning below */ *t = 0; { while((t = strchr(n, '\n')) != NULL) /* Go through lines and process them */ n = g_state._p; p[len + 1] = 0; p[len] = '\n'; p = g_state._p; /* Double null terminate the data */ sp_messagex(NULL, LOG_DEBUG, "read config file: %s", configfile); fclose(f); err(1, "couldn't read config file: %s", configfile); if(fread(g_state._p, 1, len, f) != len) /* And read in one block */ errx(1, "out of memory"); if((g_state._p = (char*)malloc(len + 2)) == NULL) err(1, "couldn't seek config file: %s", configfile); if(fseek(f, 0, SEEK_END) == -1 || (len = ftell(f)) == -1 || fseek(f, 0, SEEK_SET) == -1) /* Figure out size */ } err(1, "couldn't open config file: %s", configfile); else return -1; if((errno == ENOENT || errno == ENOTDIR)) /* Soft errors when default config file and not found */ { if(f == NULL) f = fopen(configfile, "r"); ASSERT(!g_state._p); ASSERT(configfile); char* n; char* t; char* p; long len; FILE* f = NULL;{static int parse_config_file(const char* configfile) } return ret; ret = 1; if(cb_parse_option(name, value) == 1) /* Always pass through to program */ } ret = 1; g_state.pidfile = value; else g_state.pidfile = NULL; if(strlen(value) == 0) sp_messagex(NULL, LOG_WARNING, "ignoring pid file specified on the command line. "); if(g_state.pidfile != NULL) { else if(strcasecmp(CFG_PIDFILE, name) == 0) } ret = 1; g_state.user = value; errx(2, "invalid setting: " CFG_USER); if(strlen(value) == 0) { else if(strcasecmp(CFG_USER, name) == 0) } ret = 1; g_state.directory = value; errx(2, "invalid setting: " CFG_DIRECTORY); if(strlen(value) == 0) { else if(strcasecmp(CFG_DIRECTORY, name) == 0) } ret = 1; errx(2, "invalid value for " CFG_TRANSPARENT); if((g_state.transparent = strtob(value)) == -1) { else if(strcasecmp(CFG_TRANSPARENT, name) == 0) } ret = 1; g_state.listenname = value; errx(2, "invalid " CFG_LISTENADDR " socket name or ip: %s", value); if(sock_any_pton(value, &(g_state.listenaddr), SANY_OPT_DEFANY | SANY_OPT_DEFPORT(DEFAULT_PORT)) == -1) { else if(strcasecmp(CFG_LISTENADDR, name) == 0) } ret = 1; g_state.outname = value; errx(2, "invalid " CFG_OUTADDR " socket name or ip: %s", value); if(sock_any_pton(value, &(g_state.outaddr), SANY_OPT_DEFPORT(25)) == -1) { else if(strcasecmp(CFG_OUTADDR, name) == 0) } ret = 1; errx(2, "invalid value for " CFG_XCLIENT); if((g_state.xclient = strtob(value)) == -1) { else if(strcasecmp(CFG_XCLIENT, name) == 0) }adkg@}Z2  | V / .  y x /   x 4   w ] Y  W : 6 4  d8T?;:VJFEcDBxQ,h@r76/* ----------------------------------------------------------------------------------int sp_parse_option(const char* name, const char* option);/* Used externally in some cases */static void do_server_noop(spctx_t* ctx);static const char* get_successful_rsp(const char* line, int* cont);static char* parse_xforward(char* line, const char* part);static char* parse_address(char* line);static int parse_config_file(const char* configfile);static int read_server_response(spctx_t* ctx);static int make_connections(spctx_t* ctx, int client);static int smtp_passthru(spctx_t* ctx);static void* thread_main(void* arg);static void connection_loop(int sock);static void pid_file(int write);static void drop_privileges();static void on_quit(int signal); */ * FORWARD DECLARATIONS/* ----------------------------------------------------------------------- pthread_mutexattr_t g_mtxattr;pthread_mutex_t g_mutex; /* The main mutex */unsigned int g_unique_id = 0x00100000; /* For connection ids */spstate_t g_state; /* The state and configuration of the daemon */ */ * GLOBALS/* -----------------------------------------------------------------------#define DEFAULT_KEEPALIVES 0#define DEFAULT_TIMEOUT 180#define DEFAULT_MAXTHREADS 64#define DEFAULT_PORT 10025#define DEFAULT_SOCKET "10025" */ * DEFAULT SETTINGS/* -----------------------------------------------------------------------#define CFG_XCLIENT "XClient"#define CFG_PIDFILE "PidFile"#define CFG_USER "User"#define CFG_KEEPALIVES "KeepAlives"#define CFG_DIRECTORY "TempDirectory"#define CFG_TRANSPARENT "TransparentProxy"#define CFG_LISTENADDR "Listen"#define CFG_OUTADDR "OutAddress"#define CFG_TIMEOUT "TimeOut"#define CFG_MAXTHREADS "MaxConnections" */ * sp_parse_option (below) * clamsmtpd.c, except add option to spstate_t (sppriv.h) and parse in * - When adding configuration options follow the instructions in * file. More likely it'll go into clamsmtpd.c * - Be sure that your configuration option needs to go into this * * CONFIGURATION OPTIONS/* -----------------------------------------------------------------------#define LINE_TOO_LONG(l) ((l) >= (SP_LINE_LENGTH - 2))#define MAX_DATE_LENGTH 64 */ * information behind * length at least 26". We'll need some more bytes to put timezone * asctime_r manpage: "stores the string in a user-supplied buffer of/*#define MAX_HEADER_LENGTH 1024/* Maximum length of the header argument */#define CFG_DELIMS ": \t"/* The set of delimiters that can be present between config and value */#define RCVD_HEADER "Received:"#define START_RSP "220"#define OK_RSP "250"#define DATA_RSP "354"#define DATA_END_SIG "." CRLF#define XFORWARD_CMD "XFORWARD"#define XCLIENT_CMD "XCLIENT"#define BDAT_CMD "BDAT"#define STARTTLS_CMD "STARTTLS"#define RSET_CMD "RSET"#define DATA_CMD "DATA"#define TO_CMD "RCPT TO"#define FROM_CMD "MAIL FROM"#define EHLO_CMD "EHLO"#define HELO_CMD "HELO"#define ESMTP_XEXCH50 "XEXCH50" #define ESMTP_XCLIENT "XCLIENT"#define ESMTP_CHECK "CHECKPOINT"#define ESMTP_BINARY "BINARYMIME"#define ESMTP_CHUNK "CHUNKING"#define ESMTP_TLS "STARTTLS"#define ESMTP_PIPELINE "PIPELINING"#define SMTP_MULTI_DELIMS " -"#define SMTP_DELIMS "\r\n\t :"adi@;ID)( B % # "   m h U ; :    z e _ D : | S 3  z S . v:-MKHG'% :0#mL}wricBg oih { while(!sp_is_quit()) /* Now loop and accept the connections */ } return; sp_messagex(NULL, LOG_CRIT, "out of memory"); { if(!threads) threads = (spthread_t*)calloc(g_state.max_threads, sizeof(spthread_t)); /* Create the thread buffers */ int fd, i, x, r; spthread_t* threads = NULL;{static void connection_loop(int sock)} } sp_messagex(NULL, LOG_DEBUG, "removed pid file: %s", g_state.pidfile); unlink(g_state.pidfile); { else } sp_messagex(NULL, LOG_DEBUG, "wrote pid file: %s", g_state.pidfile); } sp_message(NULL, LOG_ERR, "couldn't write to pid file: %s", g_state.pidfile); if(fclose(f) == EOF) sp_message(NULL, LOG_ERR, "couldn't write to pid file: %s", g_state.pidfile); if(ferror(f)) fprintf(f, "%d\n", (int)getpid()); { else } sp_message(NULL, LOG_ERR, "couldn't open pid file: %s", g_state.pidfile); { if(f == NULL) FILE* f = fopen(g_state.pidfile, "w"); { if(write) return; if(!g_state.pidfile){static void pid_file(int write) } sp_messagex(NULL, LOG_WARNING, "running as root is NOT recommended"); if(geteuid() == 0) } sp_messagex(NULL, LOG_DEBUG, "switched to user %s (uid %d, gid %d)", g_state.user, pw->pw_uid, pw->pw_gid); err(1, "unable to completely drop privileges"); if(setreuid(-1, 0) == 0) /* A paranoia check */ err(1, "unable to switch to user: %s (uid %d, gid %d)", g_state.user, pw->pw_uid, pw->pw_gid); setuid(pw->pw_uid) == -1) if(setgid(pw->pw_gid) == -1 || errx(1, "couldn't look up user: %s", g_state.user); if(pw == NULL) pw = getpwnam(g_state.user); else /* must be a name */ pw = getpwuid(uid); if(!t[0]) /* successful parse */ uid = strtol(g_state.user, &t, 10); } return; sp_messagex(NULL, LOG_WARNING, "must be started as root to switch to user: %s", g_state.user); { if(geteuid() != 0) { if(g_state.user) uid_t uid; struct passwd* pw; char* t;{static void drop_privileges()} g_state.quit = 1;{static void on_quit(int signal)} memset(&g_state, 0, sizeof(g_state)); free(g_state._p); if(g_state._p) pthread_mutexattr_destroy(&g_mtxattr); pthread_mutex_destroy(&g_mutex); /* Close the mutex */{void sp_done()} return g_state.quit ? 1 : 0;{int sp_is_quit()} kill(getpid(), SIGTERM); /* The handler sets the flag and this also interrupts io */{void sp_quit()} return 0; sp_messagex(NULL, LOG_DEBUG, "stopped processing"); close(sock); /* Our listen socket */ pid_file(0); connection_loop(sock); sp_messagex(NULL, LOG_DEBUG, "accepting connections"); pid_file(1); } exit(1); sp_message(NULL, LOG_CRIT, "couldn't listen on socket"); { if(listen(sock, 5) != 0) /* Let 5 connections queue up */ sp_messagex(NULL, LOG_DEBUG, "created socket: %s", g_state.listenname); } exit(1); sp_message(NULL, LOG_CRIT, "couldn't bind to address: %s", g_state.listenname);adqjI@%#"~|{<:*% ~ z x i g \ Y K 9 2 / !  U O N H "     t n !    R L J I T N  ud^U%qkf3- ret = 1; errx(2, "invalid setting: " CFG_KEEPALIVES); if(*t || g_state.keepalives < 0) g_state.keepalives = strtol(value, &t, 10); { else if(strcasecmp(CFG_KEEPALIVES, name) == 0) } ret = 1; errx(2, "invalid setting: " CFG_TIMEOUT); if(*t || g_state.timeout.tv_sec <= 0) g_state.timeout.tv_sec = strtol(value, &t, 10); { else if(strcasecmp(CFG_TIMEOUT, name) == 0) } ret = 1; errx(2, "invalid setting: " CFG_MAXTHREADS " (must be between 1 and 1024)"); if(*t || g_state.max_threads <= 1 || g_state.max_threads >= 1024) g_state.max_threads = strtol(value, &t, 10); { if(strcasecmp(CFG_MAXTHREADS, name) == 0) int ret = 0; char* t;{int sp_parse_option(const char* name, const char* value) */ * CONFIG FILE/* -----------------------------------------------------------------------------} } sp_message(NULL, LOG_CRIT, "threading problem. couldn't unlock mutex"); errno = r; { if(r != 0) int r = pthread_mutex_unlock(&g_mutex);{void sp_unlock() }#endif } sp_message(NULL, LOG_DEBUG, "thread unblocked: %d", pthread_self()); { else if(wait)#ifdef _DEBUG } sp_message(NULL, LOG_CRIT, "threading problem. couldn't lock mutex"); errno = r; { if(r != 0) #endif r = pthread_mutex_lock(&g_mutex);#else } r = pthread_mutex_lock(&g_mutex); sp_message(NULL, LOG_DEBUG, "thread will block: %d", pthread_self()); wait = 1; { if(r == EBUSY) r = pthread_mutex_trylock(&g_mutex);#ifdef _DEBUG #endif int wait = 0;#ifdef _DEBUG int r;{void sp_lock() */ * LOCKING/* -----------------------------------------------------------------------} va_end(ap); vmessage(ctx, level, 1, msg, ap); va_start(ap, msg); va_list ap;{void sp_message(spctx_t* ctx, int level, const char* msg, ...)} va_end(ap); vmessage(ctx, level, 0, msg, ap); va_start(ap, msg); va_list ap;{void sp_messagex(spctx_t* ctx, int level, const char* msg, ...)} vwarnx(buf, ap); else vsyslog(level, buf, ap); if(g_state.daemonized) /* Either to syslog or stderr */ buf[MAX_MSGLEN - 1] = 0; /* As a precaution */ } sp_unlock();clamsmtp-1.10.2/common/compat.c000066400000000000000000000274321521601501400163350ustar00rootroot00000000000000/* * Copyright (c) 2004-2005, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * * * PORTIONS FROM OPENBSD: ------------------------------------------------- * * Copyright (c) 1998 Todd C. Miller * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "usuals.h" #include "compat.h" #include #include #ifndef HAVE_REALLOCF void* reallocf(void* ptr, size_t size) { void* ret = realloc(ptr, size); if(!ret && size) free(ptr); return ret; } #endif #ifndef HAVE_STRLWR char* strlwr(char* s) { char* t = s; while(*t) { *t = tolower(*t); t++; } return s; } #endif #ifndef HAVE_STRUPR char* strupr(char* s) { char* t = s; while(*t) { *t = toupper(*t); t++; } return s; } #endif #ifndef HAVE_STRLCPY size_t strlcpy(char* dst, const char* src, size_t siz) { char* d = dst; const char* s = src; size_t n = siz; /* Copy as many bytes as will fit */ if(n != 0 && --n != 0) { do { if((*d++ = *s++) == 0) break; } while(--n != 0); } /* Not enough room in dst, add NUL and traverse rest of src */ if(n == 0) { if(siz != 0) *d = '\0'; /* NUL-terminate dst */ while (*s++) ; } return s - src - 1; /* count does not include NUL */ } #endif #ifndef HAVE_STRLCAT size_t strlcat(char* dst, const char* src, size_t siz) { char* d = dst; const char* s = src; size_t n = siz; size_t dlen; /* Find the end of dst and adjust bytes left but don't go past end */ while(n-- != 0 && *d != '\0') d++; dlen = d - dst; n = siz - dlen; if(n == 0) return dlen + strlen(s); while(*s != '\0') { if(n != 1) { *d++ = *s; n--; } s++; } *d = '\0'; return dlen + (s - src); /* count does not include NUL */ } #endif #ifndef HAVE_STRCASESTR const char* strcasestr(const char *s, const char *find) { char c, sc; size_t len; if((c = *find++) != 0) { c = tolower((unsigned char)c); len = strlen(find); do { do { if((sc = *s++) == 0) return (NULL); } while((char)tolower((unsigned char)sc) != c); } while (strncasecmp(s, find, len) != 0); s--; } return((const char*)s); } #endif #ifndef HAVE_SETENV #include int setenv(const char* name, const char* value, int overwrite) { char* t; int r; if(getenv(name) && !overwrite) return 0; t = (char*)malloc((strlen(name) + strlen(value) + 2) * sizeof(char)); if(!t) return -1; sprintf(t, "%s=%s", name, value); r = putenv(t); if(r != 0) free(t); return r; } #endif #ifndef HAVE_DAEMON #include #include #include #include #include int daemon(int nochdir, int noclose) { struct sigaction osa, sa; int oerrno, fd, osa_ok; pid_t newgrp; /* A SIGHUP may be thrown when the parent exits below. */ sigemptyset(&sa.sa_mask); sa.sa_handler = SIG_IGN; sa.sa_flags = 0; osa_ok = sigaction(SIGHUP, &sa, &osa); switch(fork()) { case -1: return -1; case 0: break; default: _exit(0); } newgrp = setsid(); oerrno = errno; if(osa_ok != -1) sigaction(SIGHUP, &osa, NULL); if(newgrp == -1) { errno = oerrno; return -1; } if(!nochdir) chdir("/"); if(!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) { dup2(fd, STDIN_FILENO); dup2(fd, STDOUT_FILENO); dup2(fd, STDERR_FILENO); if(fd > 2) close(fd); } return 0; } #endif #ifndef HAVE_GETLINE ssize_t getline(char** lineptr, size_t* n, FILE* stream) { return getdelim(lineptr, n, '\n', stream); } #endif #ifndef HAVE_GETDELIM ssize_t getdelim(char** lineptr, size_t* n, int delim, FILE* stream) { size_t written = 0; int allocated, ch; ssize_t ret = -1; char* p; if(!n || !lineptr || !stream) { errno = EINVAL; return -1; } /* Track whether we allocated this or not */ allocated = !(*lineptr); #ifdef HAVE_FLOCKFILE /* Affects performance on Solaris. */ flockfile(stream); #endif for(;;) { if(!*lineptr) *n = 0; /* Reallocate if we need more space */ if(written == *n - 1) { *n = *n ? *n * 2 : 256; if(!(p = (char*)realloc(*lineptr, *n))) { if(allocated && *lineptr) free(*lineptr); errno = ENOMEM; ret = -1; goto finally; } *lineptr = p; } while(written < *n - 1) { #ifdef HAVE_FLOCKFILE ch = getc_unlocked(stream); #else ch = fgetc(stream); #endif if(ferror(stream)) { if(allocated && *lineptr) free(*lineptr); ret = -1; goto finally; } if(ch != EOF) (*lineptr)[written++] = ch; /* Done, null terminate, return */ if(ch == EOF || ch == delim) { (*lineptr)[written] = 0; ret = written ? written : -1; goto finally; } } } finally: #ifdef HAVE_FLOCKFILE funlockfile(stream); #endif return ret; } #endif #ifndef HAVE_ERR_H #include #include #include #include extern char** __argv; static const char* calc_prog_name() { static char prognamebuf[256]; static int prepared = 0; if(!prepared) { const char* beg = strrchr(__argv[0], '\\'); const char* temp = strrchr(__argv[0], '/'); beg = (beg > temp) ? beg : temp; beg = (beg) ? beg + 1 : __argv[0]; temp = strrchr(__argv[0], '.'); temp = (temp > beg) ? temp : __argv[0] + strlen(__argv[0]); if((temp - beg) > 255) temp = beg + 255; strncpy(prognamebuf, beg, temp - beg); prognamebuf[temp - beg] = 0; prepared = 1; } return prognamebuf; } static FILE* err_file; /* file to use for error output */ /* * This is declared to take a `void *' so that the caller is not required * to include first. However, it is really a `FILE *', and the * manual page documents it as such. */ void err_set_file(void *fp) { if (fp) err_file = fp; else err_file = stderr; } void err(int eval, const char *fmt, ...) { va_list ap; va_start(ap, fmt); verrc(eval, errno, fmt, ap); va_end(ap); } void verr(int eval, const char *fmt, va_list ap) { verrc(eval, errno, fmt, ap); } void errc(int eval, int code, const char *fmt, ...) { va_list ap; va_start(ap, fmt); verrc(eval, code, fmt, ap); va_end(ap); } void verrc(int eval, int code, const char *fmt, va_list ap) { if (err_file == 0) err_set_file((FILE *)0); fprintf(err_file, "%s: ", calc_prog_name()); if (fmt != NULL) { vfprintf(err_file, fmt, ap); fprintf(err_file, ": "); } fprintf(err_file, "%s\n", strerror(code)); exit(eval); } void errx(int eval, const char *fmt, ...) { va_list ap; va_start(ap, fmt); verrx(eval, fmt, ap); va_end(ap); } void verrx(int eval, const char *fmt, va_list ap) { if (err_file == 0) err_set_file((FILE *)0); fprintf(err_file, "%s: ", calc_prog_name()); if (fmt != NULL) vfprintf(err_file, fmt, ap); fprintf(err_file, "\n"); exit(eval); } void warn(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vwarnc(errno, fmt, ap); va_end(ap); } void vwarn(const char *fmt, va_list ap) { vwarnc(errno, fmt, ap); } void warnc(int code, const char *fmt, ...) { va_list ap; va_start(ap, fmt); vwarnc(code, fmt, ap); va_end(ap); } void vwarnc(int code, const char *fmt, va_list ap) { if (err_file == 0) err_set_file((FILE *)0); fprintf(err_file, "%s: ", calc_prog_name()); if (fmt != NULL) { vfprintf(err_file, fmt, ap); fprintf(err_file, ": "); } fprintf(err_file, "%s\n", strerror(code)); } void warnx(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vwarnx(fmt, ap); va_end(ap); } void vwarnx(const char *fmt, va_list ap) { if(err_file == 0) err_set_file((FILE*)0); fprintf(err_file, "%s: ", calc_prog_name()); if(fmt != NULL) vfprintf(err_file, fmt, ap); fprintf(err_file, "\n"); } #endif clamsmtp-1.10.2/common/compat.h000066400000000000000000000073661521601501400163460ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef _COMPAT_H_ #define _COMPAT_H_ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #ifndef HAVE_STDARG_H #error ERROR: Must have a working stdarg.h header #else #include #endif #ifdef WITH_DMALLOC #include "dmalloc.h" #endif #ifndef HAVE_REALLOCF void* reallocf(void* p, size_t sz); #endif #include #if HAVE_ERR_MUTEX == 1 # define MUTEX_TYPE PTHREAD_MUTEX_ERRORCHECK_NP #else # if HAVE_ERR_MUTEX == 2 # define MUTEX_TYPE PTHREAD_MUTEX_ERRORCHECK # else # undef MUTEX_TYPE # endif #endif #ifndef HAVE_STRLWR char* strlwr(char* s); #endif #ifndef HAVE_STRUPR char* strupr(char* s); #endif #ifndef HAVE_STRLCAT size_t strlcat(char *dst, const char *src, size_t size); #endif #ifndef HAVE_STRLCPY size_t strlcpy(char *dst, const char *src, size_t size); #endif #ifndef HAVE_STRCASESTR const char* strcasestr(const char *s, const char *find); #endif #ifndef HAVE_SETENV int setenv(const char* name, const char* value, int overwrite); #endif #ifndef HAVE_DAEMON int daemon(int nochdir, int noclose); #endif #ifndef HAVE_GETLINE ssize_t getline(char** lineptr, size_t* n, FILE* stream); #endif #ifndef HAVE_GETDELIM ssize_t getdelim(char** lineptr, size_t* n, int delim, FILE* stream); #endif #ifdef HAVE_ERR_H #include #else #include void err_set_file(void *fp); void err_set_exit(void (*ef)(int)); void err(int eval, const char *fmt, ...); void verr(int eval, const char *fmt, va_list ap); void errc(int eval, int code, const char *fmt, ...); void verrc(int eval, int code, const char *fmt, va_list ap); void errx(int eval, const char *fmt, ...); void verrx(int eval, const char *fmt, va_list ap); void warn(const char *fmt, ...); void vwarn(const char *fmt, va_list ap); void warnc(int code, const char *fmt, ...); void vwarnc(int code, const char *fmt, va_list ap); void warnx(const char *fmt, ...); void vwarnx(const char *fmt, va_list ap); #endif #ifdef HAVE_PATHS_H #include #endif #ifndef _PATH_DEVNULL #define _PATH_DEVNULL "/dev/null" #endif #ifndef _PATH_TMP #define _PATH_TMP "/tmp" #endif #endif /* _COMPAT_H_ */ clamsmtp-1.10.2/common/smtppass.c000066400000000000000000001672331521601501400167300ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stefan Walter * Andreas Steinmetz * Rubio Vaughan * Olivier Beyssac */ #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usuals.h" #include "compat.h" #include "sock_any.h" #include "stringx.h" #include "sppriv.h" #ifdef LINUX_TRANSPARENT_PROXY #include #endif /* ----------------------------------------------------------------------- * STRUCTURES */ typedef struct spthread { pthread_t tid; /* Written to by the main thread */ int fd; /* The file descriptor or -1 */ } spthread_t; /* ----------------------------------------------------------------------- * DATA */ #define CRLF "\r\n" #define SMTP_TOOLONG "500 Line too long" CRLF #define SMTP_STARTBUSY "421 Server busy, too many connections" CRLF #define SMTP_STARTFAILED "421 Local Error, cannot start thread" CRLF #define SMTP_DATAINTERMED "354 Start mail input; end with ." CRLF #define SMTP_FAILED "451 Local Error" CRLF #define SMTP_NOTSUPP "502 Command not implemented" CRLF #define SMTP_NOTAUTH "554 Insufficient authorization" CRLF #define SMTP_OK "250 Ok" CRLF #define SMTP_REJPREFIX "550 Content Rejected; " #define SMTP_DATA "DATA" CRLF #define SMTP_NOOP "NOOP" CRLF #define SMTP_RSET "RSET" CRLF #define SMTP_XCLIENT "XCLIENT ADDR=%s" CRLF #define SMTP_BANNER "220 smtp.passthru" CRLF #define SMTP_HELO_RSP "250 smtp.passthru" CRLF #define SMTP_EHLO_RSP "250-smtp.passthru" CRLF #define SMTP_FEAT_RSP "250 XFILTERED" CRLF #define SMTP_DELIMS "\r\n\t :" #define SMTP_MULTI_DELIMS " -" #define ESMTP_PIPELINE "PIPELINING" #define ESMTP_TLS "STARTTLS" #define ESMTP_CHUNK "CHUNKING" #define ESMTP_BINARY "BINARYMIME" #define ESMTP_CHECK "CHECKPOINT" #define ESMTP_XCLIENT "XCLIENT" #define ESMTP_XEXCH50 "XEXCH50" #define HELO_CMD "HELO" #define EHLO_CMD "EHLO" #define FROM_CMD "MAIL FROM" #define TO_CMD "RCPT TO" #define DATA_CMD "DATA" #define RSET_CMD "RSET" #define STARTTLS_CMD "STARTTLS" #define BDAT_CMD "BDAT" #define XCLIENT_CMD "XCLIENT" #define XFORWARD_CMD "XFORWARD" #define DATA_END_SIG "." CRLF #define DATA_RSP "354" #define OK_RSP "250" #define START_RSP "220" #define RCVD_HEADER "Received:" /* The set of delimiters that can be present between config and value */ #define CFG_DELIMS ": \t" /* Maximum length of the header argument */ #define MAX_HEADER_LENGTH 1024 /* * asctime_r manpage: "stores the string in a user-supplied buffer of * length at least 26". We'll need some more bytes to put timezone * information behind */ #define MAX_DATE_LENGTH 64 #define LINE_TOO_LONG(l) ((l) >= (SP_LINE_LENGTH - 2)) /* ----------------------------------------------------------------------- * CONFIGURATION OPTIONS * * - Be sure that your configuration option needs to go into this * file. More likely it'll go into clamsmtpd.c * - When adding configuration options follow the instructions in * clamsmtpd.c, except add option to spstate_t (sppriv.h) and parse in * sp_parse_option (below) */ #define CFG_MAXTHREADS "MaxConnections" #define CFG_TIMEOUT "TimeOut" #define CFG_OUTADDR "OutAddress" #define CFG_LISTENADDR "Listen" #define CFG_TRANSPARENT "TransparentProxy" #define CFG_DIRECTORY "TempDirectory" #define CFG_KEEPALIVES "KeepAlives" #define CFG_USER "User" #define CFG_PIDFILE "PidFile" #define CFG_XCLIENT "XClient" /* ----------------------------------------------------------------------- * DEFAULT SETTINGS */ #define DEFAULT_SOCKET "10025" #define DEFAULT_PORT 10025 #define DEFAULT_MAXTHREADS 64 #define DEFAULT_TIMEOUT 180 #define DEFAULT_KEEPALIVES 0 /* ----------------------------------------------------------------------- * GLOBALS */ spstate_t g_state; /* The state and configuration of the daemon */ unsigned int g_unique_id = 0x00100000; /* For connection ids */ pthread_mutex_t g_mutex; /* The main mutex */ pthread_mutexattr_t g_mtxattr; /* ----------------------------------------------------------------------- * FORWARD DECLARATIONS */ static void on_quit(int signal); static void drop_privileges(); static void pid_file(int write); static void connection_loop(int sock); static void* thread_main(void* arg); static int smtp_passthru(spctx_t* ctx); static int make_connections(spctx_t* ctx, int client); static int read_server_response(spctx_t* ctx); static int parse_config_file(const char* configfile); static char* parse_address(char* line); static char* parse_xforward(char* line, const char* part); static const char* get_successful_rsp(const char* line, int* cont); static void do_server_noop(spctx_t* ctx); /* Used externally in some cases */ int sp_parse_option(const char* name, const char* option); /* ---------------------------------------------------------------------------------- * BASIC RUN FUNCTIONALITY */ void sp_init(const char* name) { int r; ASSERT(name); memset(&g_state, 0, sizeof(g_state)); sp_message(NULL, LOG_DEBUG, "%s (%s)", name, VERSION); /* Setup the defaults */ g_state.debug_level = -1; g_state.max_threads = DEFAULT_MAXTHREADS; g_state.timeout.tv_sec = DEFAULT_TIMEOUT; g_state.keepalives = DEFAULT_KEEPALIVES; g_state.directory = _PATH_TMP; g_state.name = name; /* We need the default to parse into a useable form, so we do this: */ r = sp_parse_option(CFG_LISTENADDR, DEFAULT_SOCKET); ASSERT(r == 1); /* Create the main mutex and condition variable */ if(pthread_mutexattr_init(&g_mtxattr) != 0 || #ifdef HAVE_ERR_MUTEX pthread_mutexattr_settype(&g_mtxattr, MUTEX_TYPE) || #endif pthread_mutex_init(&g_mutex, &g_mtxattr) != 0) errx(1, "threading problem. can't create mutex or condition var"); } int sp_run(const char* configfile, const char* pidfile, int dbg_level) { int sock; int tru = 1; ASSERT(configfile); ASSERT(g_state.name); if(!(dbg_level == -1 || dbg_level <= LOG_DEBUG)) errx(2, "invalid debug log level (must be between 1 and 4)"); g_state.debug_level = dbg_level; g_state.pidfile = pidfile; /* Now parse the configuration file */ if(parse_config_file(configfile) == -1) { /* * We used to do a check here before whether it was the default * configuration file or not, but we can't do that any longer * as it comes from the app. Usually lack of a configuration * file will cause the following checks to fail */ warnx("configuration file not found: %s", configfile); } /* This option has no default, but is required ... */ if(g_state.outname == NULL && !g_state.transparent) errx(2, "no " CFG_OUTADDR " specified."); /* ... unless we're in transparent proxy mode */ else if(g_state.outname != NULL && g_state.transparent) warnx("the " CFG_OUTADDR " option will be ignored when " CFG_TRANSPARENT " is enabled"); sp_messagex(NULL, LOG_DEBUG, "starting up (%s)...", VERSION); /* Drop privileges before daemonizing */ drop_privileges(); /* When set to this we daemonize */ if(g_state.debug_level == -1) { /* Fork a daemon nicely here */ if(daemon(0, 0) == -1) { sp_message(NULL, LOG_ERR, "couldn't run as daemon"); exit(1); } sp_messagex(NULL, LOG_DEBUG, "running as a daemon"); g_state.daemonized = 1; /* Open the system log */ openlog(g_state.name, 0, LOG_MAIL); } /* Handle some signals */ signal(SIGPIPE, SIG_IGN); signal(SIGHUP, SIG_IGN); signal(SIGINT, on_quit); signal(SIGTERM, on_quit); siginterrupt(SIGINT, 1); siginterrupt(SIGTERM, 1); /* Create the socket */ sock = socket(SANY_TYPE(g_state.listenaddr), SOCK_STREAM, 0); if(sock < 0) { sp_message(NULL, LOG_CRIT, "couldn't open socket"); exit(1); } fcntl(sock, F_SETFD, fcntl(sock, F_GETFD, 0) | FD_CLOEXEC); setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *)&tru, sizeof(tru)); /* Unlink the socket file if it exists */ if(SANY_TYPE(g_state.listenaddr) == AF_UNIX) unlink(g_state.listenname); if(bind(sock, &SANY_ADDR(g_state.listenaddr), SANY_LEN(g_state.listenaddr)) != 0) { sp_message(NULL, LOG_CRIT, "couldn't bind to address: %s", g_state.listenname); exit(1); } sp_messagex(NULL, LOG_DEBUG, "created socket: %s", g_state.listenname); /* Let 5 connections queue up */ if(listen(sock, 5) != 0) { sp_message(NULL, LOG_CRIT, "couldn't listen on socket"); exit(1); } pid_file(1); sp_messagex(NULL, LOG_DEBUG, "accepting connections"); connection_loop(sock); pid_file(0); /* Our listen socket */ close(sock); sp_messagex(NULL, LOG_DEBUG, "stopped processing"); return 0; } void sp_quit() { /* The handler sets the flag and this also interrupts io */ kill(getpid(), SIGTERM); } int sp_is_quit() { return g_state.quit ? 1 : 0; } void sp_done() { /* Close the mutex */ pthread_mutex_destroy(&g_mutex); pthread_mutexattr_destroy(&g_mtxattr); if(g_state._p) free(g_state._p); memset(&g_state, 0, sizeof(g_state)); } static void on_quit(int signal) { g_state.quit = 1; } static void drop_privileges() { char* t; struct passwd* pw; uid_t uid; if(g_state.user) { if(geteuid() != 0) { sp_messagex(NULL, LOG_WARNING, "must be started as root to switch to user: %s", g_state.user); return; } uid = strtol(g_state.user, &t, 10); if(!t[0]) /* successful parse */ pw = getpwuid(uid); else /* must be a name */ pw = getpwnam(g_state.user); if(pw == NULL) errx(1, "couldn't look up user: %s", g_state.user); if(setgid(pw->pw_gid) == -1 || setuid(pw->pw_uid) == -1) err(1, "unable to switch to user: %s (uid %d, gid %d)", g_state.user, pw->pw_uid, pw->pw_gid); /* A paranoia check */ if(setreuid(-1, 0) == 0) err(1, "unable to completely drop privileges"); sp_messagex(NULL, LOG_DEBUG, "switched to user %s (uid %d, gid %d)", g_state.user, pw->pw_uid, pw->pw_gid); } if(geteuid() == 0) sp_messagex(NULL, LOG_WARNING, "running as root is NOT recommended"); } static void pid_file(int write) { if(!g_state.pidfile) return; if(write) { FILE* f = fopen(g_state.pidfile, "w"); if(f == NULL) { sp_message(NULL, LOG_ERR, "couldn't open pid file: %s", g_state.pidfile); } else { fprintf(f, "%d\n", (int)getpid()); if(ferror(f)) sp_message(NULL, LOG_ERR, "couldn't write to pid file: %s", g_state.pidfile); if(fclose(f) == EOF) sp_message(NULL, LOG_ERR, "couldn't write to pid file: %s", g_state.pidfile); } sp_messagex(NULL, LOG_DEBUG, "wrote pid file: %s", g_state.pidfile); } else { unlink(g_state.pidfile); sp_messagex(NULL, LOG_DEBUG, "removed pid file: %s", g_state.pidfile); } } static void connection_loop(int sock) { spthread_t* threads = NULL; int fd, i, x, r; /* Create the thread buffers */ threads = (spthread_t*)calloc(g_state.max_threads, sizeof(spthread_t)); if(!threads) { sp_messagex(NULL, LOG_CRIT, "out of memory"); return; } /* Now loop and accept the connections */ while(!sp_is_quit()) { fd = accept(sock, NULL, NULL); if(fd == -1) { switch(errno) { case EINTR: case EAGAIN: break; case ECONNABORTED: sp_message(NULL, LOG_ERR, "couldn't accept a connection"); break; default: sp_message(NULL, LOG_ERR, "couldn't accept a connection"); break; }; if(sp_is_quit()) break; continue; } /* Set timeouts on client */ if(setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) < 0 || setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) < 0) sp_message(NULL, LOG_DEBUG, "couldn't set timeouts on incoming connection"); fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC); /* Look for thread and also clean up others */ for(i = 0; i < g_state.max_threads; i++) { /* Find a thread to run or clean up old threads */ if(threads[i].tid != 0) { sp_lock(); x = threads[i].fd; sp_unlock(); if(x == -1) { sp_messagex(NULL, LOG_DEBUG, "cleaning up completed thread"); pthread_join(threads[i].tid, NULL); threads[i].tid = 0; } #ifdef _DEBUG else { /* For debugging connection problems: */ sp_messagex(NULL, LOG_DEBUG, "active connection thread: %x", (int)threads[i].tid); } #endif } /* Start a new thread if neccessary */ if(fd != -1 && threads[i].tid == 0) { threads[i].fd = fd; r = pthread_create(&(threads[i].tid), NULL, thread_main, (void*)(threads + i)); if(r != 0) { errno = r; sp_message(NULL, LOG_ERR, "couldn't create thread"); write(fd, SMTP_STARTFAILED, KL(SMTP_STARTFAILED)); shutdown(fd, SHUT_RDWR); close(fd); fd = -1; break; } sp_messagex(NULL, LOG_DEBUG, "created thread for connection"); fd = -1; break; } } /* Check to make sure we have a thread */ if(fd != -1) { sp_messagex(NULL, LOG_ERR, "too many connections open (max %d). sent busy response", g_state.max_threads); write(fd, SMTP_STARTBUSY, KL(SMTP_STARTBUSY)); shutdown(fd, SHUT_RDWR); close(fd); fd = -1; } } sp_messagex(NULL, LOG_DEBUG, "waiting for threads to quit"); /* Quit all threads here */ for(i = 0; i < g_state.max_threads; i++) { /* Clean up quit threads */ if(threads[i].tid != 0) { if(threads[i].fd != -1) { sp_lock(); fd = threads[i].fd; threads[i].fd = -1; sp_unlock(); shutdown(fd, SHUT_RDWR); close(fd); } sp_messagex(NULL, LOG_DEBUG, "cleaning up completed thread"); pthread_join(threads[i].tid, NULL); threads[i].tid = 0; } } free(threads); } static spctx_t* init_thread(int fd) { spctx_t* ctx; ctx = cb_new_context(); if(ctx) { memset(ctx, 0, sizeof(*ctx)); spio_init(&(ctx->server), "SERVER"); spio_init(&(ctx->client), "CLIENT"); sp_lock(); /* Assign a unique id to the connection */ ctx->id = g_unique_id++; /* We don't care about wraps, but we don't want zero */ if(g_unique_id == 0) g_unique_id++; sp_unlock(); sp_messagex(ctx, LOG_DEBUG, "processing %d on thread %x", fd, (int)pthread_self()); /* Connect to the outgoing server ... */ if(make_connections(ctx, fd) == -1) { cb_del_context(ctx); ctx = NULL; } } return ctx; } static void cleanup_context(spctx_t* ctx) { ASSERT(ctx); if(ctx->cachefile) { fclose(ctx->cachefile); ctx->cachefile = NULL; } if(ctx->cachename[0]) { unlink(ctx->cachename); ctx->cachename[0] = 0; } if(ctx->recipients) { free(ctx->recipients); ctx->recipients = NULL; } if(ctx->sender) { free(ctx->sender); ctx->sender = NULL; } if(ctx->xforwardaddr) { free(ctx->xforwardaddr); ctx->xforwardaddr = NULL; } if(ctx->xforwardhelo) { free(ctx->xforwardhelo); ctx->xforwardhelo = NULL; } ctx->logline[0] = 0; } static void done_thread(spctx_t* ctx) { ASSERT(ctx); spio_disconnect(ctx, &(ctx->client)); spio_disconnect(ctx, &(ctx->server)); /* Clean up file stuff */ cleanup_context(ctx); cb_del_context(ctx); } static void* thread_main(void* arg) { spthread_t* thread = (spthread_t*)arg; spctx_t* ctx = NULL; int processing = 0; int ret = 0; int fd; ASSERT(thread); siginterrupt(SIGINT, 1); siginterrupt(SIGTERM, 1); sp_lock(); /* Get the client socket */ fd = thread->fd; sp_unlock(); /* Sometimes we get to this point and then quit is noted */ if(sp_is_quit() || (ctx = init_thread(fd)) == NULL) { /* Special case. We don't have a context so clean up descriptor */ close(fd); /* new_context() should have already logged reason */ RETURN(-1); } /* call the processor */ processing = 1; ret = smtp_passthru(ctx); cleanup: if(ctx) { /* Let the client know about fatal errors */ if(!processing && ret == -1 && spio_valid(&(ctx->client))) spio_write_data(ctx, &(ctx->client), SMTP_STARTFAILED); done_thread(ctx); } /* mark this as done */ sp_lock(); thread->fd = -1; sp_unlock(); return (void*)(ret == 0 ? 0 : 1); } static int make_connections(spctx_t* ctx, int client) { struct sockaddr_any peeraddr; struct sockaddr_any addr; struct sockaddr_any* outaddr; char buf[MAXPATHLEN]; const char* outname; ASSERT(client != -1); /* Setup the incoming connection. This also fills in peeraddr for us */ spio_attach(ctx, &(ctx->client), client, &peeraddr); sp_messagex(ctx, LOG_INFO, "accepted connection from: %s", ctx->client.peername); /* Create the server connection address */ outaddr = &(g_state.outaddr); outname = g_state.outname; /* For transparent proxying we have to discover the address to connect to */ if(g_state.transparent) { memset(&addr, 0, sizeof(addr)); SANY_LEN(addr) = sizeof(addr); #ifdef LINUX_TRANSPARENT_PROXY if(getsockopt(ctx->client.fd, SOL_IP, SO_ORIGINAL_DST, &SANY_ADDR(addr), &SANY_LEN(addr)) == -1) #else if(getsockname(ctx->client.fd, &SANY_ADDR(addr), &SANY_LEN(addr)) == -1) #endif { sp_message(ctx, LOG_ERR, "couldn't get source address for transparent proxying"); return -1; } /* Check address types */ if(sock_any_cmp(&addr, &peeraddr, SANY_OPT_NOPORT) == 0) { sp_messagex(ctx, LOG_ERR, "loop detected in transparent proxying"); return -1; } outaddr = &addr; } /* Check for loopback option */ else if(SANY_TYPE(*outaddr) == AF_INET && outaddr->s.in.sin_addr.s_addr == 0) { /* Use the incoming IP as the default */ memcpy(&addr, &(g_state.outaddr), sizeof(addr)); memcpy(&(addr.s.in.sin_addr), &(peeraddr.s.in.sin_addr), sizeof(addr.s.in.sin_addr)); outaddr = &addr; } #ifdef HAVE_INET6 /* IPv6 loopback? */ else if(SANY_TYPE(*outaddr) == AF_INET6 && outaddr->s.in.in6.sin_addr.s_addr == 0) { /* Use the incoming IP as the default */ memcpy(&addr, &(g_state.outaddr), sizeof(addr)); memcpy(&(addr.s.in.sin6_addr), &(peeraddr.s.in.sin6_addr), sizeof(addr.s.in.sin6_addr)); outaddr = &addr; } #endif /* Not transparent proxy or loopback */ else { /* Resolve any DNS name again */ if(sock_any_pton(g_state.outname, &addr, SANY_OPT_DEFPORT(25)) != -1) memcpy(&(g_state.outaddr), &addr, sizeof(g_state.outaddr)); else sp_messagex(ctx, LOG_WARNING, "couldn't resolve " CFG_OUTADDR ": %s", g_state.outname); } /* Reparse name if needed */ if(outaddr != &(g_state.outaddr)) { if(sock_any_ntop(outaddr, buf, MAXPATHLEN, 0) != -1) outname = buf; else outname = "unknown"; } /* Connect to the server */ if(spio_connect(ctx, &(ctx->server), outaddr, outname) == -1) return -1; return 0; } /* ---------------------------------------------------------------------------------- * SMTP HANDLING */ static int smtp_passthru(spctx_t* ctx) { char* t; const char* p; int r, cont, ret = 0; unsigned int mask; int neterror = 0; int first_rsp = 1; /* The first 220 response from server to be filtered */ int filter_host = 0; /* Next response is 250 hostname, which we change */ /* XCLIENT is for use in access control */ int xclient_sup = 0; /* Is XCLIENT supported? */ int xclient_sent = 0; /* Have we sent an XCLIENT command? */ ASSERT(spio_valid(&(ctx->client)) && spio_valid(&(ctx->server))); #define C_LINE ctx->client.line #define S_LINE ctx->server.line while(!sp_is_quit()) { mask = spio_select(ctx, &(ctx->client), &(ctx->server), NULL); if(mask == ~0) { neterror = 1; RETURN(-1); } /* Client has data available, read a line and process */ if(mask & 1) { if((r = spio_read_line(ctx, &(ctx->client), SPIO_DISCARD)) == -1) RETURN(-1); /* Client disconnected, we're done */ if(r == 0) RETURN(0); /* We don't let clients send really long lines */ if(LINE_TOO_LONG(r)) { if(spio_write_data(ctx, &(ctx->client), SMTP_TOOLONG) == -1) RETURN(-1); continue; } /* Only valid after EHLO or HELO commands */ filter_host = 0; /* * At this point we may want to send our XCLIENT. This is a per * connection command. */ if(xclient_sup && !xclient_sent && g_state.xclient) { sp_messagex(ctx, LOG_DEBUG, "sending XCLIENT"); if(spio_write_dataf(ctx, &(ctx->server), SMTP_XCLIENT, ctx->client.peername) == -1) RETURN(-1); if(read_server_response(ctx) == -1) RETURN(-1); if(!get_successful_rsp(S_LINE, NULL)) sp_messagex(ctx, LOG_WARNING, "server didn't accept XCLIENT"); xclient_sent = 1; } /* Handle the DATA section via our AV checker */ if(is_first_word(C_LINE, DATA_CMD, KL(DATA_CMD))) { /* Send back the intermediate response to the client */ if(spio_write_data(ctx, &(ctx->client), SMTP_DATAINTERMED) == -1) RETURN(-1); /* * Now go into scan mode. This also handles the eventual * sending of the data to the server, making the av check * transparent */ if(cb_check_data(ctx) == -1) RETURN(-1); /* Print the log out for this email */ sp_messagex(ctx, LOG_INFO, "%s", ctx->logline); /* Done with that email */ cleanup_context(ctx); /* Command handled */ continue; } /* * We need our response to HELO and EHLO to be modified in order * to prevent complaints about mail loops */ else if(is_first_word(C_LINE, EHLO_CMD, KL(EHLO_CMD))) { /* EHLO can have multline responses so we set a flag */ filter_host = 1; } /* * We always support XCLIENT on a HELO type connection. We do this * for security reasons, so that a client can't get around filtering * by backing up one on the protocol. */ else if(is_first_word(C_LINE, HELO_CMD, KL(HELO_CMD))) { sp_messagex(ctx, LOG_DEBUG, "XCLIENT support assumed"); xclient_sup = 1; /* Filter host as with EHLO above */ filter_host = 1; } /* * We don't like these commands. Filter them out. We should have * filtered out their service extensions earlier in the EHLO response. * This is just for errant clients. */ else if(is_first_word(C_LINE, STARTTLS_CMD, KL(STARTTLS_CMD)) || is_first_word(C_LINE, BDAT_CMD, KL(BDAT_CMD))) { sp_messagex(ctx, LOG_DEBUG, "ESMTP feature not supported"); if(spio_write_data(ctx, &(ctx->client), SMTP_NOTSUPP) == -1) RETURN(-1); /* Command handled */ continue; } /* * For security reasons we're not about to forward any XCLIENTs * from our client through. This could lead to a client using our * privileged IP address to change an audit trail or relay etc... */ else if(is_first_word(C_LINE, XCLIENT_CMD, KL(XCLIENT_CMD))) { sp_messagex(ctx, LOG_WARNING, "client attempted use of privileged XCLIENT feature"); if(spio_write_data(ctx, &(ctx->client), SMTP_NOTAUTH) == -1) RETURN(-1); /* Command handled */ continue; } /* All other commands just get passed through to server */ if(spio_write_data(ctx, &(ctx->server), C_LINE) == -1) RETURN(-1); continue; } /* Server has data available, read a line and forward */ if(mask & 2) { if((r = spio_read_line(ctx, &(ctx->server), SPIO_DISCARD)) == -1) RETURN(-1); if(r == 0) RETURN(0); if(LINE_TOO_LONG(r)) sp_messagex(ctx, LOG_WARNING, "SMTP response line too long. discarded extra"); /* * We intercept the first response we get from the server. * This allows us to change header so that it doesn't look * to the client server that we're in a wierd loop. * * In different situations using the local hostname or * 'localhost' don't work because the receiving mail server * expects one of those to be its own name. We use 'clamsmtp' * instead. No properly configured server would have this * as their domain name, and RFC 2821 allows us to use * an arbitrary but identifying string. */ if(first_rsp) { first_rsp = 0; if(is_first_word(S_LINE, START_RSP, KL(START_RSP))) { sp_messagex(ctx, LOG_DEBUG, "intercepting initial response"); if(spio_write_data(ctx, &(ctx->client), SMTP_BANNER) == -1) RETURN(-1); /* Command handled */ continue; } } if((p = get_successful_rsp(S_LINE, &cont)) != NULL) { /* * Certain mail servers (Postfix 1.x in particular) do a loop check * on the 250 response after a EHLO or HELO. This is where we * filter that to prevent loopback errors. */ if(filter_host) { /* Can have multi-line responses, and we want to be * sure to only replace the first one. */ filter_host = 0; sp_messagex(ctx, LOG_DEBUG, "intercepting host response"); if(spio_write_data(ctx, &(ctx->client), cont ? SMTP_EHLO_RSP : SMTP_HELO_RSP) == -1) RETURN(-1); /* A new email so cleanup */ cleanup_context(ctx); continue; } /* * Filter out any EHLO responses that we can't or don't want * to support. For example pipelining or TLS. */ if(is_first_word(C_LINE, EHLO_CMD, KL(EHLO_CMD))) { /* * On ESMTP connections we let the server tell us whether it * wants XCLIENTs or not. (In contrast to old SMTP above). */ if(is_first_word(p, ESMTP_XCLIENT, KL(ESMTP_XCLIENT))) { sp_messagex(ctx, LOG_DEBUG, "XCLIENT supported"); xclient_sup = 1; } if(is_first_word(p, ESMTP_PIPELINE, KL(ESMTP_PIPELINE)) || is_first_word(p, ESMTP_TLS, KL(ESMTP_TLS)) || is_first_word(p, ESMTP_CHUNK, KL(ESMTP_CHUNK)) || is_first_word(p, ESMTP_BINARY, KL(ESMTP_BINARY)) || is_first_word(p, ESMTP_CHECK, KL(ESMTP_CHECK)) || is_first_word(p, ESMTP_XCLIENT, KL(ESMTP_XCLIENT)) || is_first_word(p, ESMTP_XEXCH50, KL(ESMTP_XEXCH50))) { sp_messagex(ctx, LOG_DEBUG, "filtered ESMTP feature: %s", trim_space((char*)p)); /* * If this is the last line in the EHLO response we need * to replace it with something else */ if(!cont) { if(spio_write_data(ctx, &(ctx->client), SMTP_FEAT_RSP) == -1) RETURN(-1); } continue; } } /* MAIL FROM (that the server accepted) */ if((r = check_first_word(C_LINE, FROM_CMD, KL(FROM_CMD), SMTP_DELIMS)) > 0) { t = parse_address(C_LINE + r); sp_add_log(ctx, "from=", t); /* Make note of the sender for later */ ctx->sender = (char*)reallocf(ctx->sender, strlen(t) + 1); if(ctx->sender) strcpy(ctx->sender, t); } /* RCPT TO (that the server accepted) */ else if((r = check_first_word(C_LINE, TO_CMD, KL(TO_CMD), SMTP_DELIMS)) > 0) { t = parse_address(C_LINE + r); sp_add_log(ctx, "to=", t); /* Make note of the recipient for later */ r = ctx->recipients ? strlen(ctx->recipients) : 0; ctx->recipients = (char*)reallocf(ctx->recipients, r + strlen(t) + 2); if(ctx->recipients) { /* Recipients are separated by lines */ if(r != 0) strcat(ctx->recipients, "\n"); else ctx->recipients[0] = 0; strcat(ctx->recipients, t); } } /* * If the client sends an XFORWARD, and the server accepted it, * we store address for use in our forked process environment * variables (see sp_setup_forked). */ else if(is_first_word(C_LINE, XFORWARD_CMD, KL(XFORWARD_CMD))) { if((t = parse_xforward (C_LINE + KL(XFORWARD_CMD), "ADDR"))) { ctx->xforwardaddr = (char*)reallocf(ctx->xforwardaddr, strlen(t) + 1); if(ctx->xforwardaddr) strcpy(ctx->xforwardaddr, t); } if((t = parse_xforward (C_LINE + KL(XFORWARD_CMD), "HELO"))) { ctx->xforwardhelo = (char*)reallocf(ctx->xforwardhelo, strlen(t) + 1); if(ctx->xforwardhelo) strcpy(ctx->xforwardhelo, t); } } /* RSET */ else if(is_first_word(C_LINE, RSET_CMD, KL(RSET_CMD))) { cleanup_context(ctx); } } if(spio_write_data(ctx, &(ctx->client), S_LINE) == -1) RETURN(-1); continue; } } cleanup: if(!neterror && ret == -1 && spio_valid(&(ctx->client))) spio_write_data(ctx, &(ctx->client), SMTP_FAILED); return ret; } /* ----------------------------------------------------------------------------- * SMTP PASSTHRU FUNCTIONS FOR DATA CHECK */ static char* parse_address(char* line) { char* t; line = trim_start(line); /* * We parse out emails in the form of * as well as accept other addresses. */ if(strncmp(line, "<>", 2) == 0) return("<>"); if(line[0] == '<') { if((t = strchr(line, '>')) != NULL) { *t = 0; line++; return line; } } return trim_end(line); } static char* parse_xforward(char* line, const char* part) { char* t; char* e; t = strcasestr(line, part); if(!t) return NULL; /* equals sign and surrounding */ t = trim_start(t + strlen(part)); if(*t != '=') return NULL; t = trim_start(t + 1); if(!*t) return NULL; /* Find the end of the thingy */ if(*t == '[') { t++; e = strchr(t, ']'); } else { e = t + strcspn(t, " \t"); } if(!e) return NULL; *e = 0; return t; } static const char* get_successful_rsp(const char* line, int* cont) { /* * We check for both '250 xxx' type replies * and the continued response '250-xxxx' type */ line = trim_start(line); if(line[0] == '2' && isdigit(line[1]) && isdigit(line[2]) && (line[3] == ' ' || line[3] == '-')) { if(cont) *cont = (line[3] == '-'); return line + 4; } return NULL; } void sp_add_log(spctx_t* ctx, char* prefix, char* line) { char* t = ctx->logline; int l = strlen(t); int x; ASSERT(l <= SP_LOG_LINE_LEN); /* Add up necessary lengths */ x = 2 + strlen(prefix) + strlen(line) + 1; if(l + x >= SP_LOG_LINE_LEN) l = SP_LOG_LINE_LEN - x; t += l; l = SP_LOG_LINE_LEN - l; *t = 0; if(ctx->logline[0] != 0) strlcat(t, ", ", l); strlcat(t, prefix, l); /* Skip initial white space */ line = trim_start(line); strlcat(t, line, l); /* Skip later white space */ trim_end(t); } int sp_read_data(spctx_t* ctx, const char** data) { int r; ASSERT(ctx); ASSERT(data); *data = NULL; switch(r = spio_read_line(ctx, &(ctx->client), SPIO_QUIET)) { case 0: sp_messagex(ctx, LOG_ERR, "unexpected end of data from client"); return -1; case -1: /* Message already printed */ return -1; }; if(g_state.keepalives > 0) { /* * During this time we're just reading from the client. If we haven't * had any interaction with the server recently then send something * to let it know we're still around. */ if((ctx->server.last_action + g_state.keepalives) < time(NULL)) do_server_noop(ctx); } if(ctx->_crlf && strcmp(ctx->client.line, DATA_END_SIG) == 0) return 0; /* Check if this line ended with a CRLF */ ctx->_crlf = (strcmp(CRLF, ctx->client.line + (r - KL(CRLF))) == 0); *data = ctx->client.line; return r; } int sp_write_data(spctx_t* ctx, const char* buf, int len) { int r = 0; ASSERT(ctx); /* When a null buffer close the cache file */ if(!buf) { if(ctx->cachefile) { if(fclose(ctx->cachefile) == EOF) { sp_message(ctx, LOG_ERR, "couldn't write to cache file: %s", ctx->cachename); r = -1; } ctx->cachefile = NULL; } return r; } /* Make sure we have a file open */ if(!ctx->cachefile) { int tfd; /* Make sure afore mentioned file is gone */ if(ctx->cachename[0]) unlink(ctx->cachename); snprintf(ctx->cachename, MAXPATHLEN, "%s/%s.XXXXXX", g_state.directory, g_state.name); if((tfd = mkstemp(ctx->cachename)) == -1 || (ctx->cachefile = fdopen(tfd, "w")) == NULL) { if(tfd != -1) close(tfd); sp_message(ctx, LOG_ERR, "couldn't open cache file"); return -1; } fcntl(tfd, F_SETFD, fcntl(tfd, F_GETFD, 0) | FD_CLOEXEC); sp_messagex(ctx, LOG_DEBUG, "created cache file: %s", ctx->cachename); } fwrite(buf, 1, len, ctx->cachefile); if(ferror(ctx->cachefile)) { sp_message(ctx, LOG_ERR, "couldn't write to cache file: %s", ctx->cachename); return -1; } return len; } int sp_cache_data(spctx_t* ctx) { int r, count = 0; const char* data; while((r = sp_read_data(ctx, &data)) != 0) { if(r < 0) return -1; /* Message already printed */ count += r; if((r = sp_write_data(ctx, data, r)) < 0) return -1; /* Message already printed */ } /* End the caching */ if(sp_write_data(ctx, NULL, 0) < 0) return -1; sp_messagex(ctx, LOG_DEBUG, "wrote %d bytes to cache", count); return count; } /* Important: |date| should be at least MAX_DATE_LENGTH long */ static void make_date(spctx_t* ctx, char* date) { size_t date_len; struct tm t2; time_t t; /* Get a basic date like: 'Wed Jun 30 21:49:08 1993' */ if(time(&t) == (time_t)-1 || !localtime_r(&t, &t2) || !asctime_r(&t2, date)) { sp_message(ctx, LOG_WARNING, "unable to get date for header"); date[0] = 0; return; } trim_end(date); date_len = strlen(date); { #ifdef HAVE_TM_GMTOFF time_t timezone = t2.tm_gmtoff; const char *tzname[2] = { t2.tm_zone, t2.tm_zone }; snprintf(date + date_len, MAX_DATE_LENGTH - date_len, " %+03d%02d (%s)", (int)(timezone / 3600), (int)(timezone % 3600), tzname[t2.tm_isdst ? 1 : 0]); #else /* Apparently Solaris needs this nasty hack.... */ #define DAY_MIN (24 * HOUR_MIN) #define HOUR_MIN 60 #define MIN_SEC 60 struct tm gmt; struct tm *lt; int off; gmt = *gmtime(&t); lt = localtime(&t); off = (lt->tm_hour - gmt.tm_hour) * HOUR_MIN + lt->tm_min - gmt.tm_min; if (lt->tm_year < gmt.tm_year) off -= DAY_MIN; else if (lt->tm_year > gmt.tm_year) off += DAY_MIN; else if (lt->tm_yday < gmt.tm_yday) off -= DAY_MIN; else if (lt->tm_yday > gmt.tm_yday) off += DAY_MIN; if (lt->tm_sec <= gmt.tm_sec - MIN_SEC) off -= 1; else if (lt->tm_sec >= gmt.tm_sec + MIN_SEC) off += 1; snprintf(date + date_len, MAX_DATE_LENGTH - date_len, " %+03d%02d (%s)", (int)(off / HOUR_MIN), (int)(abs(off) % HOUR_MIN), tzname[lt->tm_isdst ? 1 : 0]); #endif } /* Break it off just in case */ date[MAX_DATE_LENGTH - 1] = 0; } /* Important: |header| should be a buffer of MAX_HEADER_LENGTH */ static int make_header(spctx_t* ctx, const char* format_str, char* header) { char date[MAX_DATE_LENGTH]; int remaining, l; const char* f; char* p; date[0] = 0; remaining = MAX_HEADER_LENGTH - 1; p = header; /* Parse the format string and replace special characters with our data */ for(f = format_str; *f && remaining > 0; f++) { /* A backslash escapes certain characters */ if(f[0] == '\\' && f[1] != 0) { switch(*(++f)) { case 'r': *p = '\r'; break; case 'n': *p = '\n'; break; case 't': *p = '\t'; break; default: *p = *f; break; } ++p; --remaining; } /* * Special symbols: * %i: client's IP * %l: server's IP * %d: date */ else if(f[0] == '%' && f[1] != 0) { switch(*(++f)) { case 'i': l = strlen(ctx->client.peername); strncpy(p, ctx->client.peername, remaining); remaining -= l; p += l; break; case 'l': l = strlen(ctx->client.localname); strncpy(p, ctx->client.localname, remaining); remaining -= l; p += l; break; case 'd': if(date[0] == 0) make_date(ctx, date); l = strlen(date); strncpy(p, date, remaining); remaining -= l; p += l; break; case '%': *p = '%'; ++p; break; default: sp_messagex(ctx, LOG_WARNING, "invalid header symbol: %%%c", *f); break; }; } else { *(p++) = *f; remaining--; } } if((p + 1) < (header + MAX_HEADER_LENGTH)) p[1] = 0; header[MAX_HEADER_LENGTH - 1] = 0; l = p - header; return l >= MAX_HEADER_LENGTH ? MAX_HEADER_LENGTH - 1 : l; } int sp_done_data(spctx_t* ctx, const char *headertmpl) { FILE* file = 0; int ret = 0; char *line; char header[MAX_HEADER_LENGTH] = ""; size_t header_len, line_len; int header_prepend = 0; ssize_t rc; ASSERT(ctx->cachename[0]); /* Must still be around */ ASSERT(!ctx->cachefile); /* File must be closed */ memset(header, 0, sizeof(header)); /* Alloc line buffer */ line_len = SP_LINE_LENGTH; if((line = (char *)malloc(line_len)) == NULL) RETURN(-1); /* Open the file */ file = fopen(ctx->cachename, "r"); if(file == NULL) { sp_message(ctx, LOG_ERR, "couldn't open cache file: %s", ctx->cachename); RETURN(-1); } /* Ask the server for permission to send data */ if(spio_write_data(ctx, &(ctx->server), SMTP_DATA) == -1) RETURN(-1); if(read_server_response(ctx) == -1) RETURN(-1); /* If server returns an error then tell the client */ if(!is_first_word(ctx->server.line, DATA_RSP, KL(DATA_RSP))) { if(spio_write_data(ctx, &(ctx->client), ctx->server.line) == -1) RETURN(-1); sp_messagex(ctx, LOG_DEBUG, "server refused data transfer"); RETURN(0); } sp_messagex(ctx, LOG_DEBUG, "sending from cache file: %s", ctx->cachename); if(headertmpl) { header_len = make_header(ctx, headertmpl, header); if(is_first_word(RCVD_HEADER, header, KL(RCVD_HEADER))) header_prepend = 1; } /* If we have to prepend the header, do it */ if(header[0] != '\0' && header_prepend) { if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)header, header_len) == -1 || spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)CRLF, KL(CRLF)) == -1) RETURN(-1); header[0] = '\0'; } /* Transfer actual file data */ while((rc = getline(&line, &line_len, file)) != -1) { /* * If the line is . we need to change it so that * it doesn't end the email. We do this by adding a space. * This won't occur much in clamsmtpd, but proxsmtpd might * have filters that accidentally put this in. */ if(strcmp(line, "." CRLF) == 0) strncpy(line, ". " CRLF, SP_LINE_LENGTH); if(header[0] != '\0') { /* * The first blank line we see means the headers are done. * At this point we add in our virus checked header. */ if(is_blank_line(line)) { if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)header, header_len) == -1 || spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)CRLF, KL(CRLF)) == -1) RETURN(-1); header[0] = '\0'; } } if(spio_write_data_raw(ctx, &(ctx->server), (unsigned char*)line, rc) == -1) RETURN(-1); } if(ferror(file)) sp_message(ctx, LOG_ERR, "error reading cache file: %s", ctx->cachename); if(ferror(file) || spio_write_data(ctx, &(ctx->server), DATA_END_SIG) == -1) { /* Tell the client it went wrong */ spio_write_data(ctx, &(ctx->client), SMTP_FAILED); RETURN(-1); } sp_messagex(ctx, LOG_DEBUG, "sent email data"); /* Okay read the response from the server and echo it to the client */ if(read_server_response(ctx) == -1) RETURN(-1); if(spio_write_data(ctx, &(ctx->client), ctx->server.line) == -1) RETURN(-1); cleanup: if(line) free(line); if(file) fclose(file); /* read-only so no error check */ return ret; } int sp_fail_data(spctx_t* ctx, const char* smtp_status) { char buf[256 + KL(SMTP_REJPREFIX) + KL(CRLF) + 1]; char* t = NULL; int len, x; int pref = 0; int crlf = 0; if(smtp_status == NULL) smtp_status = SMTP_FAILED; x = strtol(smtp_status, &t, 10); len = strlen(smtp_status); /* We need 3 digits and CRLF at the end for a premade SMTP message */ if(x == 0 || t != smtp_status + 3) pref = 1; /* We need a CRLF at the end */ if(strcmp(smtp_status + (len - KL(CRLF)), CRLF) != 0) crlf = 1; if(pref || crlf) { /* Note that we truncate long lines */ snprintf(buf, sizeof(buf), "%s%.256s%s", pref ? SMTP_REJPREFIX : "", smtp_status, crlf ? CRLF : ""); buf[sizeof(buf) - 1] = 0; smtp_status = buf; } if(spio_write_data(ctx, &(ctx->client), smtp_status) == -1) return -1; /* Tell the server to forget about the current message */ if(spio_write_data(ctx, &(ctx->server), SMTP_RSET) == -1 || read_server_response(ctx) == -1) return -1; return 0; } static int read_server_response(spctx_t* ctx) { int r; /* Read response line from the server */ if((r = spio_read_line(ctx, &(ctx->server), SPIO_DISCARD)) == -1) return -1; if(r == 0) { sp_messagex(ctx, LOG_ERR, "server disconnected unexpectedly"); /* Tell the client it went wrong */ spio_write_data(ctx, &(ctx->client), SMTP_FAILED); return 0; } if(LINE_TOO_LONG(r)) sp_messagex(ctx, LOG_WARNING, "SMTP response line too long. discarded extra"); return 0; } static void do_server_noop(spctx_t* ctx) { if(spio_valid(&(ctx->server))) { if(spio_write_data(ctx, &(ctx->server), SMTP_NOOP) != -1) spio_read_line(ctx, &(ctx->server), SPIO_DISCARD); } } void sp_setup_forked(spctx_t* ctx, int file) { /* Signals we've messed with */ signal(SIGPIPE, SIG_DFL); signal(SIGHUP, SIG_DFL); signal(SIGINT, SIG_DFL); signal(SIGTERM, SIG_DFL); siginterrupt(SIGINT, 0); siginterrupt(SIGTERM, 0); if(ctx->sender) setenv("SENDER", ctx->sender, 1); if(ctx->recipients) setenv("RECIPIENTS", ctx->recipients, 1); if(file && ctx->cachename[0]) setenv("EMAIL", ctx->cachename, 1); if(spio_valid(&(ctx->client))) setenv("CLIENT", ctx->client.peername, 1); if(ctx->xforwardaddr) setenv("REMOTE", ctx->xforwardaddr, 1); if(ctx->xforwardhelo) setenv("REMOTE_HELO", ctx->xforwardhelo, 1); if(spio_valid(&(ctx->server))) setenv("SERVER", ctx->server.peername, 1); setenv("TMPDIR", g_state.directory, 1); } /* ---------------------------------------------------------------------------------- * LOGGING */ const char kMsgDelimiter[] = ": "; #define MAX_MSGLEN 1024 static void vmessage(spctx_t* ctx, int level, int err, const char* msg, va_list ap) { char buf[MAX_MSGLEN] = { 0, }; int e = errno; if(g_state.daemonized) { if(level >= LOG_DEBUG) return; } else { if(g_state.debug_level < level) return; } ASSERT(msg); if(ctx) snprintf(buf, MAX_MSGLEN, "%06X: %s%s", ctx->id, msg, err ? ": " : ""); else snprintf(buf, MAX_MSGLEN, "%s%s", msg, err ? ": " : ""); if(err) { /* strerror_r doesn't want to work for us for some reason len = strlen(buf); strerror_r(e, buf + len, MAX_MSGLEN - len); */ sp_lock(); strncat(buf, strerror(e), MAX_MSGLEN - 1); sp_unlock(); } /* As a precaution */ buf[MAX_MSGLEN - 1] = 0; /* Either to syslog or stderr */ if(g_state.daemonized) vsyslog(level, buf, ap); else vwarnx(buf, ap); } void sp_messagex(spctx_t* ctx, int level, const char* msg, ...) { va_list ap; va_start(ap, msg); vmessage(ctx, level, 0, msg, ap); va_end(ap); } void sp_message(spctx_t* ctx, int level, const char* msg, ...) { va_list ap; va_start(ap, msg); vmessage(ctx, level, 1, msg, ap); va_end(ap); } /* ----------------------------------------------------------------------- * LOCKING */ void sp_lock() { int r; #ifdef _DEBUG int wait = 0; #endif #ifdef _DEBUG r = pthread_mutex_trylock(&g_mutex); if(r == EBUSY) { wait = 1; sp_message(NULL, LOG_DEBUG, "thread will block: %d", pthread_self()); r = pthread_mutex_lock(&g_mutex); } #else r = pthread_mutex_lock(&g_mutex); #endif if(r != 0) { errno = r; sp_message(NULL, LOG_CRIT, "threading problem. couldn't lock mutex"); } #ifdef _DEBUG else if(wait) { sp_message(NULL, LOG_DEBUG, "thread unblocked: %d", pthread_self()); } #endif } void sp_unlock() { int r = pthread_mutex_unlock(&g_mutex); if(r != 0) { errno = r; sp_message(NULL, LOG_CRIT, "threading problem. couldn't unlock mutex"); } } /* ----------------------------------------------------------------------------- * CONFIG FILE */ int sp_parse_option(const char* name, const char* value) { char* t; int ret = 0; if(strcasecmp(CFG_MAXTHREADS, name) == 0) { g_state.max_threads = strtol(value, &t, 10); if(*t || g_state.max_threads <= 1 || g_state.max_threads >= 1024) errx(2, "invalid setting: " CFG_MAXTHREADS " (must be between 1 and 1024)"); ret = 1; } else if(strcasecmp(CFG_TIMEOUT, name) == 0) { g_state.timeout.tv_sec = strtol(value, &t, 10); if(*t || g_state.timeout.tv_sec <= 0) errx(2, "invalid setting: " CFG_TIMEOUT); ret = 1; } else if(strcasecmp(CFG_KEEPALIVES, name) == 0) { g_state.keepalives = strtol(value, &t, 10); if(*t || g_state.keepalives < 0) errx(2, "invalid setting: " CFG_KEEPALIVES); ret = 1; } else if(strcasecmp(CFG_XCLIENT, name) == 0) { if((g_state.xclient = strtob(value)) == -1) errx(2, "invalid value for " CFG_XCLIENT); ret = 1; } else if(strcasecmp(CFG_OUTADDR, name) == 0) { if(sock_any_pton(value, &(g_state.outaddr), SANY_OPT_DEFPORT(25)) == -1) errx(2, "invalid " CFG_OUTADDR " socket name or ip: %s", value); g_state.outname = value; ret = 1; } else if(strcasecmp(CFG_LISTENADDR, name) == 0) { if(sock_any_pton(value, &(g_state.listenaddr), SANY_OPT_DEFANY | SANY_OPT_DEFPORT(DEFAULT_PORT)) == -1) errx(2, "invalid " CFG_LISTENADDR " socket name or ip: %s", value); g_state.listenname = value; ret = 1; } else if(strcasecmp(CFG_TRANSPARENT, name) == 0) { if((g_state.transparent = strtob(value)) == -1) errx(2, "invalid value for " CFG_TRANSPARENT); ret = 1; } else if(strcasecmp(CFG_DIRECTORY, name) == 0) { if(strlen(value) == 0) errx(2, "invalid setting: " CFG_DIRECTORY); g_state.directory = value; ret = 1; } else if(strcasecmp(CFG_USER, name) == 0) { if(strlen(value) == 0) errx(2, "invalid setting: " CFG_USER); g_state.user = value; ret = 1; } else if(strcasecmp(CFG_PIDFILE, name) == 0) { if(g_state.pidfile != NULL) sp_messagex(NULL, LOG_WARNING, "ignoring pid file specified on the command line. "); if(strlen(value) == 0) g_state.pidfile = NULL; else g_state.pidfile = value; ret = 1; } /* Always pass through to program */ if(cb_parse_option(name, value) == 1) ret = 1; return ret; } static int parse_config_file(const char* configfile) { FILE* f = NULL; long len; char* p; char* t; char* n; ASSERT(configfile); ASSERT(!g_state._p); f = fopen(configfile, "r"); if(f == NULL) { /* Soft errors when default config file and not found */ if((errno == ENOENT || errno == ENOTDIR)) return -1; else err(1, "couldn't open config file: %s", configfile); } /* Figure out size */ if(fseek(f, 0, SEEK_END) == -1 || (len = ftell(f)) == -1 || fseek(f, 0, SEEK_SET) == -1) err(1, "couldn't seek config file: %s", configfile); if((g_state._p = (char*)malloc(len + 2)) == NULL) errx(1, "out of memory"); /* And read in one block */ if(fread(g_state._p, 1, len, f) != len) err(1, "couldn't read config file: %s", configfile); fclose(f); sp_messagex(NULL, LOG_DEBUG, "read config file: %s", configfile); /* Double null terminate the data */ p = g_state._p; p[len] = '\n'; p[len + 1] = 0; n = g_state._p; /* Go through lines and process them */ while((t = strchr(n, '\n')) != NULL) { *t = 0; p = n; /* Do this before cleaning below */ n = t + 1; p = trim_start(p); /* Comments and empty lines */ if(*p == 0 || *p == '#') continue; /* Look for the break between name: value */ t = strchr(p, ':'); if(t == NULL) errx(2, "invalid config line: %s", p); /* Null terminate and split value part */ *t = 0; t++; t = trim_space(t); p = trim_space(p); /* Pass it through our options parsers */ if(sp_parse_option(p, t) == 0) /* If not recognized then it's invalid */ errx(2, "invalid config line: %s", p); sp_messagex(NULL, LOG_DEBUG, "parsed option: %s: %s", p, t); } return 0; } clamsmtp-1.10.2/common/smtppass.h000066400000000000000000000221431521601501400167230ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __SMTPPASS_H__ #define __SMTPPASS_H__ /* Forward declarations */ struct sockaddr_any; struct spctx; /* ----------------------------------------------------------------------------- * BUFFERED MULTIPLEXING IO * * This isn't meant to be a replacement library for all sorts of IO * only things that are currently used go here. */ /* * A generous maximum line length. It needs to be longer than * a full path on this system can be, because we pass the file * name to clamd. */ #if 2000 > MAXPATHLEN #define SP_LINE_LENGTH 2000 #else #define SP_LINE_LENGTH (MAXPATHLEN + 128) #endif typedef struct spio { int fd; /* The file descriptor wrapped */ const char* name; /* The name for logging */ time_t last_action; /* Time of last action on descriptor */ char peername[MAXPATHLEN]; /* Name of the peer on other side of socket */ char localname[MAXPATHLEN]; /* Address where we accepted the connection */ /* Internal use only */ char line[SP_LINE_LENGTH]; char* _nx; size_t _ln; } spio_t; #define spio_valid(io) ((io) && (io)->fd != -1) /* Setup the io structure (allocated elsewhere) */ void spio_init(spio_t* io, const char* name); /* Attach an open descriptor to a socket, optionally returning the peer */ void spio_attach(struct spctx* ctx, spio_t* io, int fd, struct sockaddr_any* peer); /* Connect and disconnect from sockets */ int spio_connect(struct spctx* ctx, spio_t* io, const struct sockaddr_any* sany, const char* addrname); void spio_disconnect(struct spctx* ctx, spio_t* io); #define SPIO_TRIM 0x00000001 #define SPIO_DISCARD 0x00000002 #define SPIO_QUIET 0x00000004 /* Read a line from a socket. Use options above. Line * will be found in io->line */ int spio_read_line(struct spctx* ctx, spio_t* io, int opts); /* Write data to socket (must supply line endings if needed). * Guaranteed to accept all data or fail. */ int spio_write_data(struct spctx* ctx, spio_t* io, const char* data); int spio_write_dataf(struct spctx* ctx, spio_t* io, const char* fmt, ...); int spio_write_data_raw(struct spctx* ctx, spio_t* io, const unsigned char* buf, int len); /* Empty the given socket */ void spio_read_junk(struct spctx* sp, spio_t* io); /* Pass up to 31 spio_t*, followed by NULL. Returns bitmap of ready for reading */ unsigned int spio_select(struct spctx* ctx, ...); /* ----------------------------------------------------------------------------- * SMTP PASS THROUGH FUNCTIONALITY */ /* Log lines have to be under roughly 900 chars otherwise * they get truncated by syslog. */ #define SP_LOG_LINE_LEN 768 typedef struct spctx { unsigned int id; /* Identifier for the connection */ spio_t client; /* Connection to client */ spio_t server; /* Connection to server */ FILE* cachefile; /* The file handle for the cached file */ char cachename[MAXPATHLEN]; /* The name of the file that we cache into */ char logline[SP_LOG_LINE_LEN]; /* Log line */ char* sender; /* The email of the sender */ char* recipients; /* The email of the recipients */ char* xforwardaddr; /* The IP address proxied for */ char* xforwardhelo; /* The HELO/EHLO proxied for */ int _crlf; /* Private data */ } spctx_t; /* * sp_init initializes the SMTP Pass-Through functionality * The name passed is the name of the app */ void sp_init(const char* name); /* * This starts up the smtp pass thru program. It will call * the cb_* functions as appropriate. */ int sp_run(const char* configfile, const char* pidfile, int dbg_level); /* * Mark the application as shutting down. * A signal will interupt most IO. */ void sp_quit(); /* * Check if the application has been marked to quit. * Useful for checking after interupted IO. */ int sp_is_quit(); /* * Called to cleanup SMTP Pass-Through functionality just * before the application quits. */ void sp_done(); /* * clamsmtpd used to accept command line args. In order to * process those args it needs to send the values to the * config file routines. This is how it does that. */ #ifdef SP_LEGACY_OPTIONS int sp_parse_option(const char* name, const char* option); #endif /* * The following functions are to be called from within * the spc_check_data function. */ /* * Adds a piece of info to the log line */ void sp_add_log(spctx_t* ctx, char* prefix, char* line); /* * Reads a line of DATA from client. Or less than a line if * line is longer than LINE_LENGTH. No trimming or anything * is done on the read line. This will end automatically * when . is detected (in which case 0 will * be returned). The data is returned in data. */ int sp_read_data(spctx_t* ctx, const char** data); /* * Writes a line (or piece) of data to a file buffer which is * later sent to the client using sp_done_data. Calling it with * a NULL buffer closes the cache file. Guaranteed to accept * all data given to it or fail. */ int sp_write_data(spctx_t* ctx, const char* buf, int buflen); /* * Sends all DATA from the client into the cache. The cache * file is then available (in spctx_t->cachename) for use. */ int sp_cache_data(spctx_t* ctx); /* * Sends the data in file buffer off to server. This is * completes a successful mail transfer. */ int sp_done_data(spctx_t* ctx, const char *header); /* * Fails the data, deletes any temp data, and sends given * status to client or if NULL then SMTP_DATAFAILED */ int sp_fail_data(spctx_t* ctx, const char* smtp_status); /* * Setup the environment with context info. This is useful * if you're going to fork another process. Be sure to exec * soon after to prevent the strings from going out of scope. */ void sp_setup_forked(spctx_t* ctx, int file); /* * Log a message. levels are syslog levels. Syntax is just * like printf etc.. Can specify a ctx of NULL in which case * no connection prefix is prepended. */ void sp_message(spctx_t* ctx, int level, const char* msg, ...); void sp_messagex(spctx_t* ctx, int level, const char* msg, ...); /* * Lock or unlock the main mutex around thread common * functionality. */ void sp_lock(); void sp_unlock(); /* ----------------------------------------------------------------------------- * CALLBACKS IMPLMEMENTED BY PROGRAM */ /* * The following functions create and destroy contexts for a new * thread. Perform initialization in there and return a spctx * structure for the thread to use. Return NULL failed. Be sure * to log message. */ extern spctx_t* cb_new_context(); extern void cb_del_context(spctx_t* ctx); /* * Called when the data section of an email is being transferred. * Once inside this function you can transfer files using * sp_read_data, sp_write_data. * * After scanning or figuring out the status call either * sp_done_data or sp_fail_data. Most failures should be handled * internally using sp_fail_data, unless it's an out of memory * condition, or sp_fail_data failed. */ extern int cb_check_data(spctx_t* ctx); /* * Parse options from the config file. The memory for these * options will stay around until sp_done is called. Return 0 * for unrecognized options, 1 for recognized, and quit the * program for invalid. */ extern int cb_parse_option(const char* name, const char* value); #endif /* __SMTPPASS_H__ */ clamsmtp-1.10.2/common/sock_any.c000066400000000000000000000214701521601501400166540ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #include #include #include #include #include #include #include #include #include "sock_any.h" #include #define LOCALHOST_ADDR 0x7F000001 int sock_any_pton(const char* addr, struct sockaddr_any* any, int opts) { size_t l; char buf[256]; char* t; char* t2; int defport = (opts & 0xFFFF); memset(any, 0, sizeof(*any)); /* Just a port? */ do { #define PORT_CHARS "0123456789" #define PORT_MIN 1 #define PORT_MAX 5 int port = 0; l = strspn(addr, PORT_CHARS); if(l < PORT_MIN || l > PORT_MAX || addr[l] != 0) break; port = strtol(addr, &t2, 10); if(*t2 || port <= 0 || port >= 65536) break; any->s.in.sin_port = htons(port); /* Fill in the type based on defaults */ #ifdef HAVE_INET6 if(opts & SANY_OPT_DEFINET6) any->s.in.sin_family = AF_INET6; else #endif any->s.in.sin_family = AF_INET; /* Fill in the address based on defaults */ if(opts & SANY_OPT_DEFLOCAL) { #ifdef HAVE_INET6 if(opts & SANY_OPT_DEFINET6) memcpy(&(any->s.in.sin6_addr), &in6addr_loopback, sizeof(struct in6_addr)); else #endif any->s.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK); } /* * Note the 'any' option is the default since we zero out * the entire structure above. */ any->namelen = sizeof(any->s.in); return AF_INET; } while(0); /* Look and see if we can parse an ipv4 address */ do { #define IPV4_PORT_CHARS #define IPV4_CHARS "0123456789." #define IPV4_MIN 3 #define IPV4_MAX 21 int port = 0; t = NULL; l = strlen(addr); if(l < IPV4_MIN || l > IPV4_MAX) break; strcpy(buf, addr); /* Find the last set that contains just numbers */ l = strspn(buf, IPV4_CHARS); if(l < IPV4_MIN) break; /* Either end of string or port */ if(buf[l] != 0 && buf[l] != ':') break; /* Get the port out */ if(buf[l] != 0) { t = buf + l + 1; buf[l] = 0; } if(t) { port = strtol(t, &t2, 10); if(*t2 || port <= 0 || port >= 65536) break; } any->s.in.sin_family = AF_INET; any->s.in.sin_port = htons((unsigned short)(port <= 0 ? defport : port)); if(inet_pton(AF_INET, buf, &(any->s.in.sin_addr)) <= 0) break; any->namelen = sizeof(any->s.in); return AF_INET; } while(0); #ifdef HAVE_INET6 do { #define IPV6_CHARS "0123456789:" #define IPV6_MIN 3 #define IPV6_MAX 51 int port = -1; t = NULL; l = strlen(addr); if(l < IPV6_MIN || l > IPV6_MAX) break; /* If it starts with a '[' then we can get port */ if(buf[0] == '[') { port = 0; addr++; } strcpy(buf, addr); /* Find the last set that contains just numbers */ l = strspn(buf, IPV6_CHARS); if(l < IPV6_MIN) break; /* Either end of string or port */ if(buf[l] != 0) { /* If had bracket, then needs to end with a bracket */ if(port != 0 || buf[l] != ']') break; /* Get the port out */ t = buf + l + 1; if(*t = ':') t++; } if(t) { port = strtol(t, &t, 10); if(*t || port <= 0 || port >= 65536) break; } any->s.in6.sin6_family = AF_INET6; any->s.in6.sin6_port = htons((unsigned short)port <= 0 : defport : port); if(inet_pton(AF_INET6, buf, &(any->s.in6.sin6_addr)) >= 0) break; any->namelen = sizeof(any->s.in6); return AF_INET6; } while(0); #endif /* A unix socket path */ do { /* No colon and must have a path component */ if(strchr(addr, ':') || !strchr(addr, '/')) break; l = strlen(addr); if(l >= sizeof(any->s.un.sun_path)) break; any->s.un.sun_family = AF_UNIX; strcpy(any->s.un.sun_path, addr); any->namelen = sizeof(any->s.un) - (sizeof(any->s.un.sun_path) - l); return AF_UNIX; } while(0); /* A DNS name and a port? */ do { struct addrinfo* res; int port = 0; t = NULL; l = strlen(addr); if(l >= 255 || !isalpha(addr[0])) break; /* Some basic illegal character checks */ if(strcspn(addr, " /\\") != l) break; strcpy(buf, addr); /* Find the last set that contains just numbers */ t = strchr(buf, ':'); if(t) { *t = 0; t++; } if(t) { port = strtol(t, &t2, 10); if(*t2 || port <= 0 || port >= 65536) break; } /* Try and resolve the domain name */ if(getaddrinfo(buf, NULL, NULL, &res) != 0 || !res) break; memcpy(&(any->s.a), res->ai_addr, sizeof(struct sockaddr)); any->namelen = res->ai_addrlen; freeaddrinfo(res); port = htons((unsigned short)(port <= 0 ? defport : port)); switch(any->s.a.sa_family) { case PF_INET: any->s.in.sin_port = port; break; #ifdef HAVE_INET6 case PF_INET6: any->s.in6.sin6_port = port; break; #endif }; return any->s.a.sa_family; } while(0); return -1; } int sock_any_ntop(const struct sockaddr_any* any, char* addr, size_t addrlen, int opts) { int len = 0; int port = 0; switch(any->s.a.sa_family) { case AF_UNIX: len = strlen(any->s.un.sun_path); if(addrlen < len + 1) { errno = ENOSPC; return -1; } strcpy(addr, any->s.un.sun_path); break; case AF_INET: if(inet_ntop(any->s.a.sa_family, &(any->s.in.sin_addr), addr, addrlen) == NULL) return -1; port = ntohs(any->s.in.sin_port); break; #ifdef HAVE_INET6 case AF_INET6: if(inet_ntop(any->s.a.sa_family, &(any->s.in6.sin6_addr), addr, addrlen) == NULL) return -1; port = ntohs(any->s.in6.sin6_port); break; #endif default: errno = EAFNOSUPPORT; return -1; } if(!(opts & SANY_OPT_NOPORT) && port != 0) { strncat(addr, ":", addrlen); addr[addrlen - 1] = 0; len = strlen(addr); addr += len; addrlen -= len; snprintf(addr, addrlen, "%d", port); } return 0; } int sock_any_cmp(const struct sockaddr_any* a1, const struct sockaddr_any* a2, int opts) { if(a1->s.a.sa_family != a2->s.a.sa_family) return -1; switch(a1->s.a.sa_family) { case AF_UNIX: return strcmp(a1->s.un.sun_path, a2->s.un.sun_path); case AF_INET: if(memcmp(&(a1->s.in.sin_addr), &(a2->s.in.sin_addr), sizeof(a2->s.in.sin_addr)) != 0) return -1; if(!(opts && SANY_OPT_NOPORT) && a1->s.in.sin_port != a2->s.in.sin_port) return -1; return 0; #ifdef HAVE_INET6 case AF_INET6: if(memcmp(&(a1->s.in6.sin6_addr), &(a2->s.in6.sin6_addr), sizeof(a2->s.in6.sin6_addr)) != 0) return -1; if(!(opts && SANY_OPT_NOPORT) && a1->s.in6.sin6_port != a2->s.in6.sin6_port) return -1; return 0; #endif default: errno = EAFNOSUPPORT; return -1; } } clamsmtp-1.10.2/common/sock_any.h000066400000000000000000000056441521601501400166660ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __SOCK_ANY_H__ #define __SOCK_ANY_H__ #include #include #include struct sockaddr_any { union _sockaddr_any { /* The header */ struct sockaddr a; /* The different types */ struct sockaddr_un un; struct sockaddr_in in; #ifdef HAVE_INET6 struct sockaddr_in6 in6; #endif } s; socklen_t namelen; }; #define SANY_ADDR(any) ((any).s.a) #define SANY_LEN(any) ((any).namelen) #define SANY_TYPE(any) ((any).s.a.sa_family) int sock_any_pton(const char* addr, struct sockaddr_any* any, int opts); /* The default port to fill in when no IP/IPv6 port specified */ #define SANY_OPT_DEFPORT(p) (int)((p) & 0xFFFF) /* When only port specified default to IPANY */ #define SANY_OPT_DEFANY 0x00000000 /* When only port specified default to LOCALHOST */ #define SANY_OPT_DEFLOCAL 0x00100000 /* When only port specified default to IPv6 */ #ifdef HAVE_INET6 #define SANY_OPT_DEFINET6 0x00200000 #endif int sock_any_ntop(const struct sockaddr_any* any, char* addr, size_t addrlen, int opts); /* Don't print or compare the port */ #define SANY_OPT_NOPORT 0x01000000 int sock_any_cmp(const struct sockaddr_any* a1, const struct sockaddr_any* a2, int opts); #endif /* __SOCK_ANY_H__ */ clamsmtp-1.10.2/common/spio.c000066400000000000000000000410121521601501400160120ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter */ /* * select() and stdio are basically mutually exclusive. * Hence all of this code to try to get some buffering * along with select IO multiplexing. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "compat.h" #include "usuals.h" #include "sock_any.h" #include "stringx.h" #include "sppriv.h" #define MAX_LOG_LINE 79 #define GET_IO_NAME(io) ((io)->name ? (io)->name : "??? ") #define HAS_EXTRA(io) ((io)->_ln > 0) static void close_raw(int* fd) { ASSERT(fd); shutdown(*fd, SHUT_RDWR); close(*fd); *fd = -1; } static void log_io_data(spctx_t* ctx, spio_t* io, const char* data, int read) { char buf[MAX_LOG_LINE + 1]; int pos, len; ASSERT(ctx && io && data); for(;;) { data += strspn(data, "\r\n"); if(!*data) break; pos = strcspn(data, "\r\n"); len = pos < MAX_LOG_LINE ? pos : MAX_LOG_LINE; memcpy(buf, data, len); buf[len] = 0; sp_messagex(ctx, LOG_DEBUG, "%s%s%s", GET_IO_NAME(io), read ? " < " : " > ", buf); data += pos; } } void spio_init(spio_t* io, const char* name) { ASSERT(io && name); memset(io, 0, sizeof(*io)); io->name = name; io->fd = -1; } void spio_attach(spctx_t* ctx, spio_t* io, int fd, struct sockaddr_any* peer) { struct sockaddr_any peeraddr; struct sockaddr_any locaddr; io->fd = fd; /* Get the address on which we accepted the connection */ memset(&locaddr, 0, sizeof(locaddr)); SANY_LEN(locaddr) = sizeof(locaddr); if(getsockname(fd, &SANY_ADDR(locaddr), &SANY_LEN(locaddr)) == -1 || sock_any_ntop(&locaddr, io->localname, MAXPATHLEN, SANY_OPT_NOPORT) == -1) { if (errno != EAFNOSUPPORT) sp_message(ctx, LOG_WARNING, "%s: couldn't get socket address", GET_IO_NAME(io)); strlcpy(io->localname, "UNKNOWN", MAXPATHLEN); } /* If the caller doesn't want the peer then use our own */ if (peer == NULL) peer = &peeraddr; memset(peer, 0, sizeof(*peer)); SANY_LEN(*peer) = sizeof(*peer); if(getpeername(fd, &SANY_ADDR(*peer), &SANY_LEN(*peer)) == -1 || sock_any_ntop(peer, io->peername, MAXPATHLEN, SANY_OPT_NOPORT) == -1) { if (errno != EAFNOSUPPORT) sp_message(ctx, LOG_WARNING, "%s: couldn't get peer address", GET_IO_NAME(io)); strlcpy(io->peername, "UNKNOWN", MAXPATHLEN); } /* As a double check */ io->line[0] = 0; io->_nx = NULL; io->_ln = 0; } int spio_connect(spctx_t* ctx, spio_t* io, const struct sockaddr_any* sany, const char* addrname) { int ret = 0; int fd; ASSERT(ctx && io && sany && addrname); ASSERT(io->fd == -1); if((fd = socket(SANY_TYPE(*sany), SOCK_STREAM, 0)) == -1) RETURN(-1); if(setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) == -1 || setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &(g_state.timeout), sizeof(g_state.timeout)) == -1) sp_messagex(ctx, LOG_DEBUG, "%s: couldn't set timeouts on connection", GET_IO_NAME(io)); fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC); if(connect(fd, &SANY_ADDR(*sany), SANY_LEN(*sany)) == -1) { close_raw(&fd); RETURN(-1); } spio_attach(ctx, io, fd, NULL); cleanup: if(ret < 0) { if(spio_valid(io)) close_raw(&(io->fd)); sp_message(ctx, LOG_ERR, "%s: couldn't connect to: %s", GET_IO_NAME(io), addrname); return -1; } ASSERT(io->fd != -1); sp_messagex(ctx, LOG_DEBUG, "%s connected to: %s", GET_IO_NAME(io), io->peername); return 0; } void spio_disconnect(spctx_t* ctx, spio_t* io) { ASSERT(ctx && io); if(spio_valid(io)) { close_raw(&(io->fd)); sp_messagex(ctx, LOG_DEBUG, "%s connection closed", GET_IO_NAME(io)); } } unsigned int spio_select(spctx_t* ctx, ...) { fd_set mask; spio_t* io; int ret = 0; int have = 0; int i = 0; va_list ap; struct timeval timeout; ASSERT(ctx); FD_ZERO(&mask); va_start(ap, ctx); while((io = va_arg(ap, spio_t*)) != NULL) { if(spio_valid(io)) { /* We can't handle more than 31 args */ if(i > (sizeof(int) * 8) - 2) break; /* Check if the buffer has something in it */ if(HAS_EXTRA(io)) ret |= (1 << i); /* Mark for select */ FD_SET(io->fd, &mask); have = 1; } i++; } va_end(ap); /* If any buffers had something present, then return */ if(ret != 0) return ret; /* No valid file descriptors */ if(!have) return ~0; for(;;) { /* Select can modify the timeout argument so we copy */ memcpy(&timeout, &(g_state.timeout), sizeof(timeout)); /* Otherwise wait on more data */ switch(select(FD_SETSIZE, &mask, NULL, NULL, &timeout)) { case 0: sp_messagex(ctx, LOG_ERR, "network operation timed out"); return ~0; case -1: if(errno == EINTR) { if(!sp_is_quit()) continue; } else sp_message(ctx, LOG_ERR, "couldn't select on sockets"); return ~0; }; break; } /* See what came in */ i = 0; va_start(ap, ctx); while((io = va_arg(ap, spio_t*)) != NULL) { if(spio_valid(io)) { /* We can't handle more than 31 args */ if(i > (sizeof(int) * 8) - 2) break; /* We have data on the descriptor, which is an action */ io->last_action = time(NULL); /* Check if the buffer has something in it */ if(FD_ISSET(io->fd, &mask)) ret |= (1 << i); } i++; } va_end(ap); return ret; } int read_raw(spctx_t* ctx, spio_t* io, int opts) { int len, x, count; char* at; char* p; /* * Just a refresher: * * _nx: Extra data read on last read. * _ln: Length of that extra data. * * _nx should never be equal to line when entering this function. * And _ln should always be less than a full buffer. */ count = 0; io->line[0] = 0; /* Remaining data in the buffer */ if(io->_nx && io->_ln > 0) { ASSERT(!io->_nx || io->_nx > io->line); ASSERT(io->_ln < SP_LINE_LENGTH); ASSERT(io->_nx + io->_ln <= io->line + SP_LINE_LENGTH); /* Check for a return in the current buffer */ if((p = (char*)memchr(io->_nx, '\n', io->_ln)) != NULL) { /* Move data to front */ x = (p - io->_nx) + 1; ASSERT(x > 0); memmove(io->line, io->_nx, x); /* Null teriminate it */ io->line[x] = 0; /* Do maintanence for next time around */ io->_ln -= x; io->_nx += x; /* A double check on the return value */ count += x; return count; } /* Otherwise move all old data to front */ memmove(io->line, io->_nx, io->_ln); count += io->_ln; /* We always leave space for a null terminator */ len = (SP_LINE_LENGTH - io->_ln) - 1; at = io->line + io->_ln; } /* No data at front just read straight in */ else { /* We always leave space for a null terminator */ len = SP_LINE_LENGTH - 1; at = io->line; } for(;;) { /* Read a block of data */ ASSERT(io->fd != -1); x = read(io->fd, at, sizeof(char) * len); if(x == -1) { if(errno == EINTR) { /* When the application is quiting */ if(sp_is_quit()) return -1; /* For any other signal we go again */ continue; } if(errno == ECONNRESET) /* Not usually a big deal so supresse the error */ sp_messagex(ctx, LOG_DEBUG, "%s: connection disconnected by peer", GET_IO_NAME(io)); else if(errno == EAGAIN) sp_messagex(ctx, LOG_WARNING, "%s: network read operation timed out", GET_IO_NAME(io)); else sp_message(ctx, LOG_ERR, "%s: couldn't read data from socket", GET_IO_NAME(io)); /* * The basic logic here is that if we've had a fatal error * reading from the socket once then we shut it down as it's * no good trying to read from again later. */ close_raw(&(io->fd)); return -1; } /* End of data */ else if(x == 0) { /* Maintenance for remaining data */ io->_nx = NULL; io->_ln = 0; return count; } /* Read data which is a descriptor action */ io->last_action = time(NULL); /* Check for a new line */ p = (char*)memchr(at, '\n', x); if(p != NULL) { p++; count += (p - at); /* Insert the null terminator */ len = x - (p - at); memmove(p + 1, p, len); *p = 0; /* Do maintenence for remaining data */ io->_nx = p + 1; io->_ln = len; return count; } /* Move the buffer pointer along */ at += x; len -= x; count += x; if(len <= 0) { /* Keep reading until we hit a new line */ if(opts & SPIO_DISCARD) { /* * K, basically the logic is that we're discarding * data and the data will be screwed up. So overwriting * some valid data in order to flush the line and * keep the buffering simple is a price we pay gladly :) */ ASSERT(128 < SP_LINE_LENGTH); at = (io->line + SP_LINE_LENGTH) - 128; len = 128; /* Go for next read */ continue; } io->_nx = NULL; io->_ln = 0; /* Null terminate */ io->line[SP_LINE_LENGTH] = 0; /* A double check on the return value */ return count; } } } int spio_read_line(spctx_t* ctx, spio_t* io, int opts) { int x, l; char* t; ASSERT(ctx && io); if(!spio_valid(io)) { sp_messagex(ctx, LOG_WARNING, "%s: tried to read from a closed connection", GET_IO_NAME(io)); return 0; } x = read_raw(ctx, io, opts); if(x > 0) { if(opts & SPIO_TRIM) { t = io->line; while(*t && isspace(*t)) t++; /* Bump the entire line down */ l = t - io->line; memmove(io->line, t, (x + 1) - l); x -= l; /* Now the end */ t = io->line + x; while(t > io->line && isspace(*(t - 1))) { *(--t) = 0; x--; } } if(!(opts & SPIO_QUIET)) log_io_data(ctx, io, io->line, 1); } return x; } int spio_write_data(spctx_t* ctx, spio_t* io, const char* data) { int len = strlen(data); ASSERT(ctx && io && data); if(!spio_valid(io)) { sp_message(ctx, LOG_ERR, "%s: connection closed. can't write data", GET_IO_NAME(io)); return -1; } log_io_data(ctx, io, data, 0); return spio_write_data_raw(ctx, io, (unsigned char*)data, len); } int spio_write_dataf(struct spctx* ctx, spio_t* io, const char* fmt, ...) { char buf[SP_LINE_LENGTH]; va_list ap; ASSERT(ctx && io && fmt); buf[0] = 0; va_start(ap, fmt); vsnprintf(buf, SP_LINE_LENGTH, fmt, ap); va_end(ap); buf[SP_LINE_LENGTH - 1] = 0; return spio_write_data(ctx, io, buf); } int spio_write_data_raw(spctx_t* ctx, spio_t* io, const unsigned char* buf, int len) { int r; ASSERT(ctx && io && buf); if(io->fd == -1) return 0; io->last_action = time(NULL); while(len > 0) { r = write(io->fd, buf, len); if(r > 0) { buf += r; len -= r; } else if(r == -1) { if(errno == EINTR) { /* When the application is quiting */ if(sp_is_quit()) return -1; /* For any other signal we go again */ continue; } /* * The basic logic here is that if we've had a fatal error * writing to the socket once then we shut it down as it's * no good trying to write to it again later. */ close_raw(&(io->fd)); if(errno == EAGAIN) sp_messagex(ctx, LOG_WARNING, "%s: network write operation timed out", GET_IO_NAME(io)); else sp_message(ctx, LOG_ERR, "%s: couldn't write data to socket", GET_IO_NAME(io)); return -1; } } return 0; } void spio_read_junk(spctx_t* ctx, spio_t* io) { char buf[16]; const char* t; int said = 0; int l; ASSERT(ctx); ASSERT(io); /* Truncate any data in buffer */ io->_ln = 0; io->_nx = 0; if(!spio_valid(io)) return; /* Make it non blocking */ fcntl(io->fd, F_SETFL, fcntl(io->fd, F_GETFL, 0) | O_NONBLOCK); for(;;) { l = read(io->fd, buf, sizeof(buf) - 1); if(l <= 0) break; io->last_action = time(NULL); buf[l] = 0; t = trim_start(buf); if(!said && *t) { sp_messagex(ctx, LOG_DEBUG, "%s: received junk data from daemon", GET_IO_NAME(io)); said = 1; } } fcntl(io->fd, F_SETFL, fcntl(io->fd, F_GETFL, 0) & ~O_NONBLOCK); } clamsmtp-1.10.2/common/sppriv.h000066400000000000000000000060541521601501400163770ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __SPPRIV_H__ #define __SPPRIV_H__ #include "smtppass.h" typedef struct spstate { /* Settings ------------------------------- */ int debug_level; /* The level to print stuff to console */ int max_threads; /* Maximum number of threads to process at once */ struct timeval timeout; /* Timeout for communication */ int keepalives; /* Send server keep alives at this interval */ int transparent; /* Transparent proxying */ int xclient; /* Send XFORWARD info */ const char* directory; /* The temp directory */ const char* user; /* User to run as */ const char* pidfile; /* The pid file for daemon */ const char* header; /* A header to include in the email */ struct sockaddr_any outaddr; /* The outgoing address */ const char* outname; struct sockaddr_any listenaddr; /* Address to listen on */ const char* listenname; /* State --------------------------------- */ const char* name; /* The name of the program */ int quit; /* Quit the process */ int daemonized; /* Whether process is daemonized or not */ /* Internal Use ------------------------- */ char* _p; } spstate_t; extern spstate_t g_state; #endif /* __SPPRIV_H__ */ clamsmtp-1.10.2/common/stringx.c000066400000000000000000000100641521601501400165410ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #include #include #include #include #include #include #include "usuals.h" #include "compat.h" #include "stringx.h" /* ---------------------------------------------------------------------------------- * Parsing */ int is_first_word(const char* line, const char* word, int len) { ASSERT(line); ASSERT(word); ASSERT(len > 0); while(*line && isspace(*line)) line++; if(strncasecmp(line, word, len) != 0) return 0; line += len; return !*line || isspace(*line); } int check_first_word(const char* line, const char* word, int len, char* delims) { const char* t; int found = 0; ASSERT(line); ASSERT(word); ASSERT(len > 0); t = line; while(*t && strchr(delims, *t)) t++; if(strncasecmp(t, word, len) != 0) return 0; t += len; while(*t && strchr(delims, *t)) { found = 1; t++; } return (!*t || found) ? t - line : 0; } int is_last_word(const char* line, const char* word, int len) { const char* t; ASSERT(line); ASSERT(word); ASSERT(len > 0); t = line + strlen(line); while(t > line && isspace(*(t - 1))) --t; if(t - len < line) return 0; return strncasecmp(t - len, word, len) == 0; } int is_blank_line(const char* line) { /* Small optimization */ if(!*line) return 1; while(*line && isspace(*line)) line++; return *line == 0; } char* trim_start(const char* data) { while(*data && isspace(*data)) ++data; return (char*)data; } char* trim_end(char* data) { char* t = data + strlen(data); while(t > data && isspace(*(t - 1))) { t--; *t = 0; } return data; } char* trim_space(char* data) { data = (char*)trim_start(data); return trim_end(data); } /* String to bool helper function */ int strtob(const char* str) { if(strcasecmp(str, "0") == 0 || strcasecmp(str, "no") == 0 || strcasecmp(str, "false") == 0 || strcasecmp(str, "f") == 0 || strcasecmp(str, "off") == 0) return 0; if(strcasecmp(str, "1") == 0 || strcasecmp(str, "yes") == 0 || strcasecmp(str, "true") == 0 || strcasecmp(str, "t") == 0 || strcasecmp(str, "on") == 0) return 1; return -1; } clamsmtp-1.10.2/common/stringx.h000066400000000000000000000041211521601501400165430ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __STRINGX_H__ #define __STRINGX_H__ int check_first_word(const char* line, const char* word, int len, char* delims); int is_first_word(const char* line, const char* word, int len); int is_last_word(const char* line, const char* word, int len); int is_blank_line(const char* line); char* trim_start(const char* data); char* trim_end(char* data); char* trim_space(char* data); int strtob(const char* str); #endif /* __STRINGX_H__ */ clamsmtp-1.10.2/common/usuals.h000066400000000000000000000044331521601501400163670ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __USUALS_H__ #define __USUALS_H__ #include #include "config.h" #include #include #include #include #include "compat.h" #ifndef NULL #define NULL 0 #endif #ifndef max #define max(a,b) (((a) > (b)) ? (a) : (b)) #endif #ifndef min #define min(a,b) (((a) < (b)) ? (a) : (b)) #endif #define countof(x) (sizeof(x) / sizeof(x[0])) #ifdef _DEBUG #include "assert.h" #define ASSERT(x) assert(x) #else #define ASSERT(x) #endif #define KL(s) ((sizeof(s) - 1) / sizeof(char)) #define RETURN(x) { ret = (x); goto cleanup; } #endif /* __USUALS_H__ */ clamsmtp-1.10.2/compile000077500000000000000000000163501521601501400147710ustar00rootroot00000000000000#! /bin/sh # Wrapper for compilers which do not understand '-c -o'. scriptversion=2018-03-07.03; # UTC # Copyright (C) 1999-2021 Free Software Foundation, Inc. # Written by Tom Tromey . # # 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, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # This file is maintained in Automake, please report # bugs to or send patches to # . nl=' ' # We need space, tab and new line, in precisely that order. Quoting is # there to prevent tools from complaining about whitespace usage. IFS=" "" $nl" file_conv= # func_file_conv build_file lazy # Convert a $build file to $host form and store it in $file # Currently only supports Windows hosts. If the determined conversion # type is listed in (the comma separated) LAZY, no conversion will # take place. func_file_conv () { file=$1 case $file in / | /[!/]*) # absolute file, and not a UNC file if test -z "$file_conv"; then # lazily determine how to convert abs files case `uname -s` in MINGW*) file_conv=mingw ;; CYGWIN* | MSYS*) file_conv=cygwin ;; *) file_conv=wine ;; esac fi case $file_conv/,$2, in *,$file_conv,*) ;; mingw/*) file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'` ;; cygwin/* | msys/*) file=`cygpath -m "$file" || echo "$file"` ;; wine/*) file=`winepath -w "$file" || echo "$file"` ;; esac ;; esac } # func_cl_dashL linkdir # Make cl look for libraries in LINKDIR func_cl_dashL () { func_file_conv "$1" if test -z "$lib_path"; then lib_path=$file else lib_path="$lib_path;$file" fi linker_opts="$linker_opts -LIBPATH:$file" } # func_cl_dashl library # Do a library search-path lookup for cl func_cl_dashl () { lib=$1 found=no save_IFS=$IFS IFS=';' for dir in $lib_path $LIB do IFS=$save_IFS if $shared && test -f "$dir/$lib.dll.lib"; then found=yes lib=$dir/$lib.dll.lib break fi if test -f "$dir/$lib.lib"; then found=yes lib=$dir/$lib.lib break fi if test -f "$dir/lib$lib.a"; then found=yes lib=$dir/lib$lib.a break fi done IFS=$save_IFS if test "$found" != yes; then lib=$lib.lib fi } # func_cl_wrapper cl arg... # Adjust compile command to suit cl func_cl_wrapper () { # Assume a capable shell lib_path= shared=: linker_opts= for arg do if test -n "$eat"; then eat= else case $1 in -o) # configure might choose to run compile as 'compile cc -o foo foo.c'. eat=1 case $2 in *.o | *.[oO][bB][jJ]) func_file_conv "$2" set x "$@" -Fo"$file" shift ;; *) func_file_conv "$2" set x "$@" -Fe"$file" shift ;; esac ;; -I) eat=1 func_file_conv "$2" mingw set x "$@" -I"$file" shift ;; -I*) func_file_conv "${1#-I}" mingw set x "$@" -I"$file" shift ;; -l) eat=1 func_cl_dashl "$2" set x "$@" "$lib" shift ;; -l*) func_cl_dashl "${1#-l}" set x "$@" "$lib" shift ;; -L) eat=1 func_cl_dashL "$2" ;; -L*) func_cl_dashL "${1#-L}" ;; -static) shared=false ;; -Wl,*) arg=${1#-Wl,} save_ifs="$IFS"; IFS=',' for flag in $arg; do IFS="$save_ifs" linker_opts="$linker_opts $flag" done IFS="$save_ifs" ;; -Xlinker) eat=1 linker_opts="$linker_opts $2" ;; -*) set x "$@" "$1" shift ;; *.cc | *.CC | *.cxx | *.CXX | *.[cC]++) func_file_conv "$1" set x "$@" -Tp"$file" shift ;; *.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO]) func_file_conv "$1" mingw set x "$@" "$file" shift ;; *) set x "$@" "$1" shift ;; esac fi shift done if test -n "$linker_opts"; then linker_opts="-link$linker_opts" fi exec "$@" $linker_opts exit 1 } eat= case $1 in '') echo "$0: No command. Try '$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: compile [--help] [--version] PROGRAM [ARGS] Wrapper for compilers which do not understand '-c -o'. Remove '-o dest.o' from ARGS, run PROGRAM with the remaining arguments, and rename the output as expected. If you are trying to build a whole package this is not the right script to run: please start by reading the file 'INSTALL'. Report bugs to . EOF exit $? ;; -v | --v*) echo "compile $scriptversion" exit $? ;; cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \ icl | *[/\\]icl | icl.exe | *[/\\]icl.exe ) func_cl_wrapper "$@" # Doesn't return... ;; esac ofile= cfile= for arg do if test -n "$eat"; then eat= else case $1 in -o) # configure might choose to run compile as 'compile cc -o foo foo.c'. # So we strip '-o arg' only if arg is an object. eat=1 case $2 in *.o | *.obj) ofile=$2 ;; *) set x "$@" -o "$2" shift ;; esac ;; *.c) cfile=$1 set x "$@" "$1" shift ;; *) set x "$@" "$1" shift ;; esac fi shift done if test -z "$ofile" || test -z "$cfile"; then # If no '-o' option was seen then we might have been invoked from a # pattern rule where we don't need one. That is ok -- this is a # normal compilation that the losing compiler can handle. If no # '.c' file was seen then we are probably linking. That is also # ok. exec "$@" fi # Name of file we expect compiler to create. cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'` # Create the lock directory. # Note: use '[/\\:.-]' here to ensure that we don't use the same name # that we are using for the .o file. Also, base the name on the expected # object file name, since that is what matters with a parallel build. lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d while true; do if mkdir "$lockdir" >/dev/null 2>&1; then break fi sleep 1 done # FIXME: race condition here if user kills between mkdir and trap. trap "rmdir '$lockdir'; exit 1" 1 2 15 # Run the compile. "$@" ret=$? if test -f "$cofile"; then test "$cofile" = "$ofile" || mv "$cofile" "$ofile" elif test -f "${cofile}bj"; then test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile" fi rmdir "$lockdir" exit $ret # Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC0" # time-stamp-end: "; # UTC" # End: clamsmtp-1.10.2/config.guess000077500000000000000000001430511521601501400157320ustar00rootroot00000000000000#!/usr/bin/sh # Attempt to guess a canonical system name. # Copyright 1992-2024 Free Software Foundation, Inc. # shellcheck disable=SC2006,SC2268 # see below for rationale timestamp='2024-01-01' # This file 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 3 of the License, 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, see . # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that # program. This Exception is an additional permission under section 7 # of the GNU General Public License, version 3 ("GPLv3"). # # Originally written by Per Bothner; maintained since 2000 by Ben Elliston. # # You can get the latest version of this script from: # https://git.savannah.gnu.org/cgit/config.git/plain/config.guess # # Please send patches to . # The "shellcheck disable" line above the timestamp inhibits complaints # about features and limitations of the classic Bourne shell that were # superseded or lifted in POSIX. 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GUESS=romp-ibm-aix # uname -m gives an 8 hex-code CPU id ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) GUESS=i386-ibm-aix ;; ia64:AIX:*:*) if test -x /usr/bin/oslevel ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=$UNAME_VERSION.$UNAME_RELEASE fi GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` then GUESS=$SYSTEM_NAME else GUESS=rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then GUESS=rs6000-ibm-aix3.2.4 else GUESS=rs6000-ibm-aix3.2 fi ;; *:AIX:*:[4567]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if test -x /usr/bin/lslpp ; then IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \ awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` else IBM_REV=$UNAME_VERSION.$UNAME_RELEASE fi GUESS=$IBM_ARCH-ibm-aix$IBM_REV ;; *:AIX:*:*) GUESS=rs6000-ibm-aix ;; ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*) GUESS=romp-ibm-bsd4.4 ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and GUESS=romp-ibm-bsd$UNAME_RELEASE # 4.3 with uname added to ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) GUESS=rs6000-bull-bosx ;; DPX/2?00:B.O.S.:*:*) GUESS=m68k-bull-sysv3 ;; 9000/[34]??:4.3bsd:1.*:*) GUESS=m68k-hp-bsd ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) GUESS=m68k-hp-bsd4.4 ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'` case $UNAME_MACHINE in 9000/31?) HP_ARCH=m68000 ;; 9000/[34]??) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if test -x /usr/bin/getconf; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case $sc_cpu_version in 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case $sc_kernel_bits in 32) HP_ARCH=hppa2.0n ;; 64) HP_ARCH=hppa2.0w ;; '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 esac ;; esac fi if test "$HP_ARCH" = ""; then set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if test "$HP_ARCH" = hppa2.0w then set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | grep -q __LP64__ then HP_ARCH=hppa2.0w else HP_ARCH=hppa64 fi fi GUESS=$HP_ARCH-hp-hpux$HPUX_REV ;; ia64:HP-UX:*:*) HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'` GUESS=ia64-hp-hpux$HPUX_REV ;; 3050*:HI-UX:*:*) set_cc_for_build sed 's/^ //' << EOF > "$dummy.c" #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` && { echo "$SYSTEM_NAME"; exit; } GUESS=unknown-hitachi-hiuxwe2 ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*) GUESS=hppa1.1-hp-bsd ;; 9000/8??:4.3bsd:*:*) GUESS=hppa1.0-hp-bsd ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) GUESS=hppa1.0-hp-mpeix ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*) GUESS=hppa1.1-hp-osf ;; hp8??:OSF1:*:*) GUESS=hppa1.0-hp-osf ;; i*86:OSF1:*:*) if test -x /usr/sbin/sysversion ; then GUESS=$UNAME_MACHINE-unknown-osf1mk else GUESS=$UNAME_MACHINE-unknown-osf1 fi ;; parisc*:Lites*:*:*) GUESS=hppa1.1-hp-lites ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) GUESS=c1-convex-bsd ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) GUESS=c34-convex-bsd ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) GUESS=c38-convex-bsd ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) GUESS=c4-convex-bsd ;; CRAY*Y-MP:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=ymp-cray-unicos$CRAY_REL ;; CRAY*[A-Z]90:*:*:*) echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=t90-cray-unicos$CRAY_REL ;; CRAY*T3E:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=alphaev5-cray-unicosmk$CRAY_REL ;; CRAY*SV1:*:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=sv1-cray-unicos$CRAY_REL ;; *:UNICOS/mp:*:*) CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'` GUESS=craynv-cray-unicosmp$CRAY_REL ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'` GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL} ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL} ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE ;; sparc*:BSD/OS:*:*) GUESS=sparc-unknown-bsdi$UNAME_RELEASE ;; *:BSD/OS:*:*) GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE ;; arm:FreeBSD:*:*) UNAME_PROCESSOR=`uname -p` set_cc_for_build if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi else FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf fi ;; *:FreeBSD:*:*) UNAME_PROCESSOR=`uname -p` case $UNAME_PROCESSOR in amd64) UNAME_PROCESSOR=x86_64 ;; i386) UNAME_PROCESSOR=i586 ;; esac FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL ;; i*:CYGWIN*:*) GUESS=$UNAME_MACHINE-pc-cygwin ;; *:MINGW64*:*) GUESS=$UNAME_MACHINE-pc-mingw64 ;; *:MINGW*:*) GUESS=$UNAME_MACHINE-pc-mingw32 ;; *:MSYS*:*) GUESS=$UNAME_MACHINE-pc-msys ;; i*:PW*:*) GUESS=$UNAME_MACHINE-pc-pw32 ;; *:SerenityOS:*:*) GUESS=$UNAME_MACHINE-pc-serenity ;; *:Interix*:*) case $UNAME_MACHINE in x86) GUESS=i586-pc-interix$UNAME_RELEASE ;; authenticamd | genuineintel | EM64T) GUESS=x86_64-unknown-interix$UNAME_RELEASE ;; IA64) GUESS=ia64-unknown-interix$UNAME_RELEASE ;; esac ;; i*:UWIN*:*) GUESS=$UNAME_MACHINE-pc-uwin ;; amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) GUESS=x86_64-pc-cygwin ;; prep*:SunOS:5.*:*) SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'` GUESS=powerpcle-unknown-solaris2$SUN_REL ;; *:GNU:*:*) # the GNU system GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'` GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'` GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL ;; *:GNU/*:*:*) # other systems with GNU libc and userland GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"` GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC ;; x86_64:[Mm]anagarm:*:*|i?86:[Mm]anagarm:*:*) GUESS="$UNAME_MACHINE-pc-managarm-mlibc" ;; *:[Mm]anagarm:*:*) GUESS="$UNAME_MACHINE-unknown-managarm-mlibc" ;; *:Minix:*:*) GUESS=$UNAME_MACHINE-unknown-minix ;; aarch64:Linux:*:*) set_cc_for_build CPU=$UNAME_MACHINE LIBCABI=$LIBC if test "$CC_FOR_BUILD" != no_compiler_found; then ABI=64 sed 's/^ //' << EOF > "$dummy.c" #ifdef __ARM_EABI__ #ifdef __ARM_PCS_VFP ABI=eabihf #else ABI=eabi #endif #endif EOF cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'` eval "$cc_set_abi" case $ABI in eabi | eabihf) CPU=armv8l; LIBCABI=$LIBC$ABI ;; esac fi GUESS=$CPU-unknown-linux-$LIBCABI ;; aarch64_be:Linux:*:*) UNAME_MACHINE=aarch64_be GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; alpha:Linux:*:*) case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in EV5) UNAME_MACHINE=alphaev5 ;; EV56) UNAME_MACHINE=alphaev56 ;; PCA56) UNAME_MACHINE=alphapca56 ;; PCA57) UNAME_MACHINE=alphapca56 ;; EV6) UNAME_MACHINE=alphaev6 ;; EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep -q ld.so.1 if test "$?" = 0 ; then LIBC=gnulibc1 ; fi GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; arm*:Linux:*:*) set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then GUESS=$UNAME_MACHINE-unknown-linux-$LIBC else if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi else GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf fi fi ;; avr32*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; cris:Linux:*:*) GUESS=$UNAME_MACHINE-axis-linux-$LIBC ;; crisv32:Linux:*:*) GUESS=$UNAME_MACHINE-axis-linux-$LIBC ;; e2k:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; frv:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; hexagon:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; i*86:Linux:*:*) GUESS=$UNAME_MACHINE-pc-linux-$LIBC ;; ia64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; k1om:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; kvx:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; kvx:cos:*:*) GUESS=$UNAME_MACHINE-unknown-cos ;; kvx:mbr:*:*) GUESS=$UNAME_MACHINE-unknown-mbr ;; loongarch32:Linux:*:* | loongarch64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; m32r*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; m68*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; mips:Linux:*:* | mips64:Linux:*:*) set_cc_for_build IS_GLIBC=0 test x"${LIBC}" = xgnu && IS_GLIBC=1 sed 's/^ //' << EOF > "$dummy.c" #undef CPU #undef mips #undef mipsel #undef mips64 #undef mips64el #if ${IS_GLIBC} && defined(_ABI64) LIBCABI=gnuabi64 #else #if ${IS_GLIBC} && defined(_ABIN32) LIBCABI=gnuabin32 #else LIBCABI=${LIBC} #endif #endif #if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 CPU=mipsisa64r6 #else #if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6 CPU=mipsisa32r6 #else #if defined(__mips64) CPU=mips64 #else CPU=mips #endif #endif #endif #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) MIPS_ENDIAN=el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) MIPS_ENDIAN= #else MIPS_ENDIAN= #endif #endif EOF cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'` eval "$cc_set_vars" test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; } ;; mips64el:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; openrisc*:Linux:*:*) GUESS=or1k-unknown-linux-$LIBC ;; or32:Linux:*:* | or1k*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; padre:Linux:*:*) GUESS=sparc-unknown-linux-$LIBC ;; parisc64:Linux:*:* | hppa64:Linux:*:*) GUESS=hppa64-unknown-linux-$LIBC ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;; PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;; *) GUESS=hppa-unknown-linux-$LIBC ;; esac ;; ppc64:Linux:*:*) GUESS=powerpc64-unknown-linux-$LIBC ;; ppc:Linux:*:*) GUESS=powerpc-unknown-linux-$LIBC ;; ppc64le:Linux:*:*) GUESS=powerpc64le-unknown-linux-$LIBC ;; ppcle:Linux:*:*) GUESS=powerpcle-unknown-linux-$LIBC ;; riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; s390:Linux:*:* | s390x:Linux:*:*) GUESS=$UNAME_MACHINE-ibm-linux-$LIBC ;; sh64*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; sh*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; sparc:Linux:*:* | sparc64:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; tile*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; vax:Linux:*:*) GUESS=$UNAME_MACHINE-dec-linux-$LIBC ;; x86_64:Linux:*:*) set_cc_for_build CPU=$UNAME_MACHINE LIBCABI=$LIBC if test "$CC_FOR_BUILD" != no_compiler_found; then ABI=64 sed 's/^ //' << EOF > "$dummy.c" #ifdef __i386__ ABI=x86 #else #ifdef __ILP32__ ABI=x32 #endif #endif EOF cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'` eval "$cc_set_abi" case $ABI in x86) CPU=i686 ;; x32) LIBCABI=${LIBC}x32 ;; esac fi GUESS=$CPU-pc-linux-$LIBCABI ;; xtensa*:Linux:*:*) GUESS=$UNAME_MACHINE-unknown-linux-$LIBC ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. GUESS=i386-sequent-sysv4 ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION ;; i*86:OS/2:*:*) # If we were able to find 'uname', then EMX Unix compatibility # is probably installed. GUESS=$UNAME_MACHINE-pc-os2-emx ;; i*86:XTS-300:*:STOP) GUESS=$UNAME_MACHINE-unknown-stop ;; i*86:atheos:*:*) GUESS=$UNAME_MACHINE-unknown-atheos ;; i*86:syllable:*:*) GUESS=$UNAME_MACHINE-pc-syllable ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) GUESS=i386-unknown-lynxos$UNAME_RELEASE ;; i*86:*DOS:*:*) GUESS=$UNAME_MACHINE-pc-msdosdjgpp ;; i*86:*:4.*:*) UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL else GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL fi ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL else GUESS=$UNAME_MACHINE-pc-sysv32 fi ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i586. # Note: whatever this is, it MUST be the same as what config.sub # prints for the "djgpp" host, or else GDB configure will decide that # this is a cross-build. GUESS=i586-pc-msdosdjgpp ;; Intel:Mach:3*:*) GUESS=i386-pc-mach3 ;; paragon:*:*:*) GUESS=i860-intel-osf1 ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then GUESS=i860-stardent-sysv$UNAME_RELEASE # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. GUESS=i860-unknown-sysv$UNAME_RELEASE # Unknown i860-SVR4 fi ;; mini*:CTIX:SYS*5:*) # "miniframe" GUESS=m68010-convergent-sysv ;; mc68k:UNIX:SYSTEM5:3.51m) GUESS=m68k-convergent-sysv ;; M680?0:D-NIX:5.3:*) GUESS=m68k-diab-dnix ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; NCR*:*:4.2:* | MPRAS*:*:4.2:*) OS_REL='.3' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) GUESS=m68k-unknown-lynxos$UNAME_RELEASE ;; mc68030:UNIX_System_V:4.*:*) GUESS=m68k-atari-sysv4 ;; TSUNAMI:LynxOS:2.*:*) GUESS=sparc-unknown-lynxos$UNAME_RELEASE ;; rs6000:LynxOS:2.*:*) GUESS=rs6000-unknown-lynxos$UNAME_RELEASE ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) GUESS=powerpc-unknown-lynxos$UNAME_RELEASE ;; SM[BE]S:UNIX_SV:*:*) GUESS=mips-dde-sysv$UNAME_RELEASE ;; RM*:ReliantUNIX-*:*:*) GUESS=mips-sni-sysv4 ;; RM*:SINIX-*:*:*) GUESS=mips-sni-sysv4 ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` GUESS=$UNAME_MACHINE-sni-sysv4 else GUESS=ns32k-sni-sysv fi ;; PENTIUM:*:4.0*:*) # Unisys 'ClearPath HMP IX 4000' SVR4/MP effort # says GUESS=i586-unisys-sysv4 ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm GUESS=hppa1.1-stratus-sysv4 ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. GUESS=i860-stratus-sysv4 ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. GUESS=$UNAME_MACHINE-stratus-vos ;; *:VOS:*:*) # From Paul.Green@stratus.com. GUESS=hppa1.1-stratus-vos ;; mc68*:A/UX:*:*) GUESS=m68k-apple-aux$UNAME_RELEASE ;; news*:NEWS-OS:6*:*) GUESS=mips-sony-newsos6 ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if test -d /usr/nec; then GUESS=mips-nec-sysv$UNAME_RELEASE else GUESS=mips-unknown-sysv$UNAME_RELEASE fi ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. GUESS=powerpc-be-beos ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. GUESS=powerpc-apple-beos ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. GUESS=i586-pc-beos ;; BePC:Haiku:*:*) # Haiku running on Intel PC compatible. GUESS=i586-pc-haiku ;; ppc:Haiku:*:*) # Haiku running on Apple PowerPC GUESS=powerpc-apple-haiku ;; *:Haiku:*:*) # Haiku modern gcc (not bound by BeOS compat) GUESS=$UNAME_MACHINE-unknown-haiku ;; SX-4:SUPER-UX:*:*) GUESS=sx4-nec-superux$UNAME_RELEASE ;; SX-5:SUPER-UX:*:*) GUESS=sx5-nec-superux$UNAME_RELEASE ;; SX-6:SUPER-UX:*:*) GUESS=sx6-nec-superux$UNAME_RELEASE ;; SX-7:SUPER-UX:*:*) GUESS=sx7-nec-superux$UNAME_RELEASE ;; SX-8:SUPER-UX:*:*) GUESS=sx8-nec-superux$UNAME_RELEASE ;; SX-8R:SUPER-UX:*:*) GUESS=sx8r-nec-superux$UNAME_RELEASE ;; SX-ACE:SUPER-UX:*:*) GUESS=sxace-nec-superux$UNAME_RELEASE ;; Power*:Rhapsody:*:*) GUESS=powerpc-apple-rhapsody$UNAME_RELEASE ;; *:Rhapsody:*:*) GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE ;; arm64:Darwin:*:*) GUESS=aarch64-apple-darwin$UNAME_RELEASE ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` case $UNAME_PROCESSOR in unknown) UNAME_PROCESSOR=powerpc ;; esac if command -v xcode-select > /dev/null 2> /dev/null && \ ! xcode-select --print-path > /dev/null 2> /dev/null ; then # Avoid executing cc if there is no toolchain installed as # cc will be a stub that puts up a graphical alert # prompting the user to install developer tools. CC_FOR_BUILD=no_compiler_found else set_cc_for_build fi if test "$CC_FOR_BUILD" != no_compiler_found; then if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then case $UNAME_PROCESSOR in i386) UNAME_PROCESSOR=x86_64 ;; powerpc) UNAME_PROCESSOR=powerpc64 ;; esac fi # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_PPC >/dev/null then UNAME_PROCESSOR=powerpc fi elif test "$UNAME_PROCESSOR" = i386 ; then # uname -m returns i386 or x86_64 UNAME_PROCESSOR=$UNAME_MACHINE fi GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = x86; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE ;; *:QNX:*:4*) GUESS=i386-pc-qnx ;; NEO-*:NONSTOP_KERNEL:*:*) GUESS=neo-tandem-nsk$UNAME_RELEASE ;; NSE-*:NONSTOP_KERNEL:*:*) GUESS=nse-tandem-nsk$UNAME_RELEASE ;; NSR-*:NONSTOP_KERNEL:*:*) GUESS=nsr-tandem-nsk$UNAME_RELEASE ;; NSV-*:NONSTOP_KERNEL:*:*) GUESS=nsv-tandem-nsk$UNAME_RELEASE ;; NSX-*:NONSTOP_KERNEL:*:*) GUESS=nsx-tandem-nsk$UNAME_RELEASE ;; *:NonStop-UX:*:*) GUESS=mips-compaq-nonstopux ;; BS2000:POSIX*:*:*) GUESS=bs2000-siemens-sysv ;; DS/*:UNIX_System_V:*:*) GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "${cputype-}" = 386; then UNAME_MACHINE=i386 elif test "x${cputype-}" != x; then UNAME_MACHINE=$cputype fi GUESS=$UNAME_MACHINE-unknown-plan9 ;; *:TOPS-10:*:*) GUESS=pdp10-unknown-tops10 ;; *:TENEX:*:*) GUESS=pdp10-unknown-tenex ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) GUESS=pdp10-dec-tops20 ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) GUESS=pdp10-xkl-tops20 ;; *:TOPS-20:*:*) GUESS=pdp10-unknown-tops20 ;; *:ITS:*:*) GUESS=pdp10-unknown-its ;; SEI:*:*:SEIUX) GUESS=mips-sei-seiux$UNAME_RELEASE ;; *:DragonFly:*:*) DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'` GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case $UNAME_MACHINE in A*) GUESS=alpha-dec-vms ;; I*) GUESS=ia64-dec-vms ;; V*) GUESS=vax-dec-vms ;; esac ;; *:XENIX:*:SysV) GUESS=i386-pc-xenix ;; i*86:skyos:*:*) SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'` GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL ;; i*86:rdos:*:*) GUESS=$UNAME_MACHINE-pc-rdos ;; i*86:Fiwix:*:*) GUESS=$UNAME_MACHINE-pc-fiwix ;; *:AROS:*:*) GUESS=$UNAME_MACHINE-unknown-aros ;; x86_64:VMkernel:*:*) GUESS=$UNAME_MACHINE-unknown-esx ;; amd64:Isilon\ OneFS:*:*) GUESS=x86_64-unknown-onefs ;; *:Unleashed:*:*) GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE ;; *:Ironclad:*:*) GUESS=$UNAME_MACHINE-unknown-ironclad ;; esac # Do we have a guess based on uname results? if test "x$GUESS" != x; then echo "$GUESS" exit fi # No uname command or uname output not recognized. set_cc_for_build cat > "$dummy.c" < #include #endif #if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) #if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) #include #if defined(_SIZE_T_) || defined(SIGLOST) #include #endif #endif #endif main () { #if defined (sony) #if defined (MIPSEB) /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, I don't know.... */ printf ("mips-sony-bsd\n"); exit (0); #else #include printf ("m68k-sony-newsos%s\n", #ifdef NEWSOS4 "4" #else "" #endif ); exit (0); #endif #endif #if defined (NeXT) #if !defined (__ARCHITECTURE__) #define __ARCHITECTURE__ "m68k" #endif int version; version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; if (version < 4) printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); else printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); exit (0); #endif #if defined (MULTIMAX) || defined (n16) #if defined (UMAXV) printf ("ns32k-encore-sysv\n"); exit (0); #else #if defined (CMU) printf ("ns32k-encore-mach\n"); exit (0); #else printf ("ns32k-encore-bsd\n"); exit (0); #endif #endif #endif #if defined (__386BSD__) printf ("i386-pc-bsd\n"); exit (0); #endif #if defined (sequent) #if defined (i386) printf ("i386-sequent-dynix\n"); exit (0); #endif #if defined (ns32000) printf ("ns32k-sequent-dynix\n"); exit (0); #endif #endif #if defined (_SEQUENT_) struct utsname un; uname(&un); if (strncmp(un.version, "V2", 2) == 0) { printf ("i386-sequent-ptx2\n"); exit (0); } if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ printf ("i386-sequent-ptx1\n"); exit (0); } printf ("i386-sequent-ptx\n"); exit (0); #endif #if defined (vax) #if !defined (ultrix) #include #if defined (BSD) #if BSD == 43 printf ("vax-dec-bsd4.3\n"); exit (0); #else #if BSD == 199006 printf ("vax-dec-bsd4.3reno\n"); exit (0); #else printf ("vax-dec-bsd\n"); exit (0); #endif #endif #else printf ("vax-dec-bsd\n"); exit (0); #endif #else #if defined(_SIZE_T_) || defined(SIGLOST) struct utsname un; uname (&un); printf ("vax-dec-ultrix%s\n", un.release); exit (0); #else printf ("vax-dec-ultrix\n"); exit (0); #endif #endif #endif #if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__) #if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__) #if defined(_SIZE_T_) || defined(SIGLOST) struct utsname *un; uname (&un); printf ("mips-dec-ultrix%s\n", un.release); exit (0); #else printf ("mips-dec-ultrix\n"); exit (0); #endif #endif #endif #if defined (alliant) && defined (i860) printf ("i860-alliant-bsd\n"); exit (0); #endif exit (1); } EOF $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` && { echo "$SYSTEM_NAME"; exit; } # Apollos put the system type in the environment. test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; } echo "$0: unable to guess system type" >&2 case $UNAME_MACHINE:$UNAME_SYSTEM in mips:Linux | mips64:Linux) # If we got here on MIPS GNU/Linux, output extra information. cat >&2 <&2 <&2 </dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = "$UNAME_MACHINE" UNAME_RELEASE = "$UNAME_RELEASE" UNAME_SYSTEM = "$UNAME_SYSTEM" UNAME_VERSION = "$UNAME_VERSION" EOF fi exit 1 # Local variables: # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: clamsmtp-1.10.2/config.h.in000066400000000000000000000112531521601501400154330ustar00rootroot00000000000000/* config.h.in. Generated from configure.in by autoheader. */ /* Installation Prefix */ #undef CONF_PREFIX /* Define to 1 if you have the header file. */ #undef HAVE_ASSERT_H /* Define to 1 if you have the 'daemon' function. */ #undef HAVE_DAEMON /* Define to 1 if you have the header file. */ #undef HAVE_ERRNO_H /* Define to 1 if you have the header file. */ #undef HAVE_ERR_H /* "Error Mutex Type" */ #undef HAVE_ERR_MUTEX /* Define to 1 if you have the header file. */ #undef HAVE_FCNTL_H /* Define to 1 if you have the 'flockfile' function. */ #undef HAVE_FLOCKFILE /* Define to 1 if you have the 'getaddrinfo' function. */ #undef HAVE_GETADDRINFO /* Define to 1 if you have the 'getdelim' function. */ #undef HAVE_GETDELIM /* Define to 1 if you have the 'getline' function. */ #undef HAVE_GETLINE /* Define to 1 if you have the 'getopt' function. */ #undef HAVE_GETOPT /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if you have the 'dmalloc' library (-ldmalloc). */ #undef HAVE_LIBDMALLOC /* Define to 1 if you have the 'nsl' library (-lnsl). */ #undef HAVE_LIBNSL /* Define to 1 if you have the 'socket' library (-lsocket). */ #undef HAVE_LIBSOCKET /* Define to 1 if you have the header file. */ #undef HAVE_LIMITS_H /* Define to 1 if you have the header file. */ #undef HAVE_LINUX_NETFILTER_IPV4_H /* Define to 1 if you have the 'malloc' function. */ #undef HAVE_MALLOC /* Define to 1 if you have the 'memset' function. */ #undef HAVE_MEMSET /* Define to 1 if you have the header file. */ #undef HAVE_NETDB_H /* Define to 1 if you have the header file. */ #undef HAVE_PATHS_H /* Define if you have POSIX threads libraries and header files. */ #undef HAVE_PTHREAD /* Define to 1 if you have the 'realloc' function. */ #undef HAVE_REALLOC /* Define to 1 if you have the 'setenv' function. */ #undef HAVE_SETENV /* Define to 1 if you have the header file. */ #undef HAVE_STDARG_H /* Define to 1 if you have the header file. */ #undef HAVE_STDDEF_H /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDIO_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H /* Define to 1 if you have the 'strcasestr' function. */ #undef HAVE_STRCASESTR /* Define to 1 if you have the 'strchr' function. */ #undef HAVE_STRCHR /* Define to 1 if you have the 'strerror' function. */ #undef HAVE_STRERROR /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H /* Define to 1 if you have the header file. */ #undef HAVE_STRING_H /* Define to 1 if you have the 'strlcat' function. */ #undef HAVE_STRLCAT /* Define to 1 if you have the 'strlcpy' function. */ #undef HAVE_STRLCPY /* Define to 1 if you have the 'strlwr' function. */ #undef HAVE_STRLWR /* Define to 1 if you have the 'strncat' function. */ #undef HAVE_STRNCAT /* Define to 1 if you have the 'strncpy' function. */ #undef HAVE_STRNCPY /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* "Time Zone GMT Offset" */ #undef HAVE_TM_GMTOFF /* Define to 1 if you have the 'tolower' function. */ #undef HAVE_TOLOWER /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H /* Whether the system supports a linux type transparent proxy */ #undef LINUX_TRANSPARENT_PROXY /* Name of package */ #undef PACKAGE /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the home page for this package. */ #undef PACKAGE_URL /* Define to the version of this package. */ #undef PACKAGE_VERSION /* Define to the necessary symbol if this constant uses a non-standard name on your system. */ #undef PTHREAD_CREATE_JOINABLE /* Define to 1 if all of the C89 standard headers exist (not just the ones required in a freestanding environment). This macro is provided for backward compatibility; new code need not use it. */ #undef STDC_HEADERS /* Version number of package */ #undef VERSION /* malloc memory debugging */ #undef WITH_DMALLOC /* In debug mode */ #undef _DEBUG /* Define to empty if 'const' does not conform to ANSI C. */ #undef const /* Define as 'unsigned int' if doesn't define. */ #undef size_t clamsmtp-1.10.2/config.sub000077500000000000000000001077611521601501400154050ustar00rootroot00000000000000#!/usr/bin/sh # Configuration validation subroutine script. # Copyright 1992-2024 Free Software Foundation, Inc. # shellcheck disable=SC2006,SC2268 # see below for rationale timestamp='2024-01-01' # This file 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 3 of the License, 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, see . # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that # program. This Exception is an additional permission under section 7 # of the GNU General Public License, version 3 ("GPLv3"). # Please send patches to . # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # You can get the latest version of this script from: # https://git.savannah.gnu.org/cgit/config.git/plain/config.sub # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. The user should be able to distinguish # a failure to support a valid configuration from a meaningless # configuration. # The goal of this file is to map all the various variations of a given # machine specification into a single specification in the form: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM # or in some cases, the newer four-part form: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM # It is wrong to echo any other type of specification. # The "shellcheck disable" line above the timestamp inhibits complaints # about features and limitations of the classic Bourne shell that were # superseded or lifted in POSIX. However, this script identifies a wide # variety of pre-POSIX systems that do not have POSIX shells at all, and # even some reasonably current systems (Solaris 10 as case-in-point) still # have a pre-POSIX /bin/sh. me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS Canonicalize a configuration name. Options: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.sub ($timestamp) Copyright 1992-2024 Free Software Foundation, Inc. This is free software; see the source for copying conditions. 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Do not test the value of __STDC__, because some compilers set it to 0 while being otherwise adequately conformant. */ #if !defined __STDC__ # error "Compiler does not advertise C89 conformance" #endif #include #include struct stat; /* Most of the following tests are stolen from RCS 5.7 src/conf.sh. */ struct buf { int x; }; struct buf * (*rcsopen) (struct buf *, struct stat *, int); static char *e (char **p, int i) { return p[i]; } static char *f (char * (*g) (char **, int), char **p, ...) { char *s; va_list v; va_start (v,p); s = g (p, va_arg (v,int)); va_end (v); return s; } /* C89 style stringification. */ #define noexpand_stringify(a) #a const char *stringified = noexpand_stringify(arbitrary+token=sequence); /* C89 style token pasting. 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It is necessary to write \x00 == 0 to get something that is true only with -std. */ int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1]; /* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters inside strings and character constants. */ #define FOO(x) '\''x'\'' int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1]; int test (int i, double x); struct s1 {int (*f) (int a);}; struct s2 {int (*f) (double a);}; int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int), int, int);' # Test code for whether the C compiler supports C89 (body of main). ac_c_conftest_c89_main=' ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]); ' # Test code for whether the C compiler supports C99 (global declarations) ac_c_conftest_c99_globals=' /* Does the compiler advertise C99 conformance? */ #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L # error "Compiler does not advertise C99 conformance" #endif // See if C++-style comments work. #include extern int puts (const char *); extern int printf (const char *, ...); extern int dprintf (int, const char *, ...); extern void *malloc (size_t); extern void free (void *); // Check varargs macros. These examples are taken from C99 6.10.3.5. // dprintf is used instead of fprintf to avoid needing to declare // FILE and stderr. #define debug(...) dprintf (2, __VA_ARGS__) #define showlist(...) puts (#__VA_ARGS__) #define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__)) static void test_varargs_macros (void) { int x = 1234; int y = 5678; debug ("Flag"); debug ("X = %d\n", x); showlist (The first, second, and third items.); report (x>y, "x is %d but y is %d", x, y); } // Check long long types. #define BIG64 18446744073709551615ull #define BIG32 4294967295ul #define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0) #if !BIG_OK #error "your preprocessor is broken" #endif #if BIG_OK #else #error "your preprocessor is broken" #endif static long long int bignum = -9223372036854775807LL; static unsigned long long int ubignum = BIG64; struct incomplete_array { int datasize; double data[]; }; struct named_init { int number; const wchar_t *name; double average; }; typedef const char *ccp; static inline int test_restrict (ccp restrict text) { // Iterate through items via the restricted pointer. // Also check for declarations in for loops. for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i) continue; return 0; } // Check varargs and va_copy. static bool test_varargs (const char *format, ...) { va_list args; va_start (args, format); va_list args_copy; va_copy (args_copy, args); const char *str = ""; int number = 0; float fnumber = 0; while (*format) { switch (*format++) { case '\''s'\'': // string str = va_arg (args_copy, const char *); break; case '\''d'\'': // int number = va_arg (args_copy, int); break; case '\''f'\'': // float fnumber = va_arg (args_copy, double); break; default: break; } } va_end (args_copy); va_end (args); return *str && number && fnumber; } ' # Test code for whether the C compiler supports C99 (body of main). ac_c_conftest_c99_main=' // Check bool. _Bool success = false; success |= (argc != 0); // Check restrict. if (test_restrict ("String literal") == 0) success = true; char *restrict newvar = "Another string"; // Check varargs. success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234); test_varargs_macros (); // Check flexible array members. struct incomplete_array *ia = malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10)); ia->datasize = 10; for (int i = 0; i < ia->datasize; ++i) ia->data[i] = i * 1.234; // Work around memory leak warnings. free (ia); // Check named initializers. struct named_init ni = { .number = 34, .name = L"Test wide string", .average = 543.34343, }; ni.number = 58; int dynamic_array[ni.number]; dynamic_array[0] = argv[0][0]; dynamic_array[ni.number - 1] = 543; // work around unused variable warnings ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\'' || dynamic_array[ni.number - 1] != 543); ' # Test code for whether the C compiler supports C11 (global declarations) ac_c_conftest_c11_globals=' /* Does the compiler advertise C11 conformance? */ #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L # error "Compiler does not advertise C11 conformance" #endif // Check _Alignas. char _Alignas (double) aligned_as_double; char _Alignas (0) no_special_alignment; extern char aligned_as_int; char _Alignas (0) _Alignas (int) aligned_as_int; // Check _Alignof. enum { int_alignment = _Alignof (int), int_array_alignment = _Alignof (int[100]), char_alignment = _Alignof (char) }; _Static_assert (0 < -_Alignof (int), "_Alignof is signed"); // Check _Noreturn. int _Noreturn does_not_return (void) { for (;;) continue; } // Check _Static_assert. struct test_static_assert { int x; _Static_assert (sizeof (int) <= sizeof (long int), "_Static_assert does not work in struct"); long int y; }; // Check UTF-8 literals. #define u8 syntax error! char const utf8_literal[] = u8"happens to be ASCII" "another string"; // Check duplicate typedefs. typedef long *long_ptr; typedef long int *long_ptr; typedef long_ptr long_ptr; // Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1. struct anonymous { union { struct { int i; int j; }; struct { int k; long int l; } w; }; int m; } v1; ' # Test code for whether the C compiler supports C11 (body of main). ac_c_conftest_c11_main=' _Static_assert ((offsetof (struct anonymous, i) == offsetof (struct anonymous, w.k)), "Anonymous union alignment botch"); v1.i = 2; v1.w.k = 5; ok |= v1.i != 5; ' # Test code for whether the C compiler supports C11 (complete). ac_c_conftest_c11_program="${ac_c_conftest_c89_globals} ${ac_c_conftest_c99_globals} ${ac_c_conftest_c11_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} ${ac_c_conftest_c99_main} ${ac_c_conftest_c11_main} return ok; } " # Test code for whether the C compiler supports C99 (complete). ac_c_conftest_c99_program="${ac_c_conftest_c89_globals} ${ac_c_conftest_c99_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} ${ac_c_conftest_c99_main} return ok; } " # Test code for whether the C compiler supports C89 (complete). ac_c_conftest_c89_program="${ac_c_conftest_c89_globals} int main (int argc, char **argv) { int ok = 0; ${ac_c_conftest_c89_main} return ok; } " as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H" as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H" as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H" as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H" as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H" as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H" as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H" as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H" as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H" # Auxiliary files required by this configure script. ac_aux_files="config.guess config.sub compile missing install-sh" # Locations in which to look for auxiliary files. ac_aux_dir_candidates="${srcdir}${PATH_SEPARATOR}${srcdir}/..${PATH_SEPARATOR}${srcdir}/../.." # Search for a directory containing all of the required auxiliary files, # $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates. # If we don't find one directory that contains all the files we need, # we report the set of missing files from the *first* directory in # $ac_aux_dir_candidates and give up. ac_missing_aux_files="" ac_first_candidate=: printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR as_found=false for as_dir in $ac_aux_dir_candidates do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac as_found=: printf "%s\n" "$as_me:${as_lineno-$LINENO}: trying $as_dir" >&5 ac_aux_dir_found=yes ac_install_sh= for ac_aux in $ac_aux_files do # As a special case, if "install-sh" is required, that requirement # can be satisfied by any of "install-sh", "install.sh", or "shtool", # and $ac_install_sh is set appropriately for whichever one is found. if test x"$ac_aux" = x"install-sh" then if test -f "${as_dir}install-sh"; then printf "%s\n" "$as_me:${as_lineno-$LINENO}: ${as_dir}install-sh found" >&5 ac_install_sh="${as_dir}install-sh -c" elif test -f "${as_dir}install.sh"; then printf "%s\n" "$as_me:${as_lineno-$LINENO}: ${as_dir}install.sh found" >&5 ac_install_sh="${as_dir}install.sh -c" elif test -f "${as_dir}shtool"; then printf "%s\n" "$as_me:${as_lineno-$LINENO}: ${as_dir}shtool found" >&5 ac_install_sh="${as_dir}shtool install -c" else ac_aux_dir_found=no if $ac_first_candidate; then ac_missing_aux_files="${ac_missing_aux_files} install-sh" else break fi fi else if test -f "${as_dir}${ac_aux}"; then printf "%s\n" "$as_me:${as_lineno-$LINENO}: ${as_dir}${ac_aux} found" >&5 else ac_aux_dir_found=no if $ac_first_candidate; then ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}" else break fi fi fi done if test "$ac_aux_dir_found" = yes; then ac_aux_dir="$as_dir" break fi ac_first_candidate=false as_found=false done IFS=$as_save_IFS if $as_found then : else case e in #( e) as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5 ;; esac fi # These three variables are undocumented and unsupported, # and are intended to be withdrawn in a future Autoconf release. # They can cause serious problems if a builder's source tree is in a directory # whose full name contains unusual characters. if test -f "${ac_aux_dir}config.guess"; then ac_config_guess="$SHELL ${ac_aux_dir}config.guess" fi if test -f "${ac_aux_dir}config.sub"; then ac_config_sub="$SHELL ${ac_aux_dir}config.sub" fi if test -f "$ac_aux_dir/configure"; then ac_configure="$SHELL ${ac_aux_dir}configure" fi # Check that the precious variables saved in the cache have kept the same # value. ac_cache_corrupted=false for ac_var in $ac_precious_vars; do eval ac_old_set=\$ac_cv_env_${ac_var}_set eval ac_new_set=\$ac_env_${ac_var}_set eval ac_old_val=\$ac_cv_env_${ac_var}_value eval ac_new_val=\$ac_env_${ac_var}_value case $ac_old_set,$ac_new_set in set,) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&5 printf "%s\n" "$as_me: error: '$ac_var' was set to '$ac_old_val' in the previous run" >&2;} ac_cache_corrupted=: ;; ,set) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' was not set in the previous run" >&5 printf "%s\n" "$as_me: error: '$ac_var' was not set in the previous run" >&2;} ac_cache_corrupted=: ;; ,);; *) if test "x$ac_old_val" != "x$ac_new_val"; then # differences in whitespace do not lead to failure. ac_old_val_w=`echo x $ac_old_val` ac_new_val_w=`echo x $ac_new_val` if test "$ac_old_val_w" != "$ac_new_val_w"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: '$ac_var' has changed since the previous run:" >&5 printf "%s\n" "$as_me: error: '$ac_var' has changed since the previous run:" >&2;} ac_cache_corrupted=: else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&5 printf "%s\n" "$as_me: warning: ignoring whitespace changes in '$ac_var' since the previous run:" >&2;} eval $ac_var=\$ac_old_val fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: former value: '$ac_old_val'" >&5 printf "%s\n" "$as_me: former value: '$ac_old_val'" >&2;} { printf "%s\n" "$as_me:${as_lineno-$LINENO}: current value: '$ac_new_val'" >&5 printf "%s\n" "$as_me: current value: '$ac_new_val'" >&2;} fi;; esac # Pass precious variables to config.status. if test "$ac_new_set" = set; then case $ac_new_val in *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;; *) ac_arg=$ac_var=$ac_new_val ;; esac case " $ac_configure_args " in *" '$ac_arg' "*) ;; # Avoid dups. 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" >&6; } PTHREAD_CFLAGS="$flag" ;; pthread-config) # Extract the first word of "pthread-config", so it can be a program name with args. set dummy pthread-config; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_acx_pthread_config+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$acx_pthread_config"; then ac_cv_prog_acx_pthread_config="$acx_pthread_config" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_acx_pthread_config="yes" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_acx_pthread_config" && ac_cv_prog_acx_pthread_config="no" fi ;; esac fi acx_pthread_config=$ac_cv_prog_acx_pthread_config if test -n "$acx_pthread_config"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $acx_pthread_config" >&5 printf "%s\n" "$acx_pthread_config" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi if test x"$acx_pthread_config" = xno; then continue; fi PTHREAD_CFLAGS="`pthread-config --cflags`" PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" ;; *) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for the pthreads library -l$flag" >&5 printf %s "checking for the pthreads library -l$flag... " >&6; } PTHREAD_LIBS="-l$flag" ;; esac save_LIBS="$LIBS" save_CFLAGS="$CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # Check for various functions. We must include pthread.h, # since some functions may be macros. (On the Sequent, we # need a special flag -Kthread to make this header compile.) # We check for pthread_join because it is in -lpthread on IRIX # while pthread_create is in libc. We check for pthread_attr_init # due to DEC craziness with -lpthreads. We check for # pthread_cleanup_push because it is one of the few pthread # functions on Solaris that doesn't have a non-functional libc stub. # We try pthread_create on general principles. cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main (void) { pthread_t th; pthread_join(th, 0); pthread_attr_init(0); pthread_cleanup_push(0, 0); pthread_create(0,0,0,0); pthread_cleanup_pop(0); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : acx_pthread_ok=yes fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $acx_pthread_ok" >&5 printf "%s\n" "$acx_pthread_ok" >&6; } if test "x$acx_pthread_ok" = xyes; then break; fi PTHREAD_LIBS="" PTHREAD_CFLAGS="" done fi # Various other checks: if test "x$acx_pthread_ok" = xyes; then save_LIBS="$LIBS" LIBS="$PTHREAD_LIBS $LIBS" save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # Detect AIX lossage: threads are created detached by default # and the JOINABLE attribute has a nonstandard name (UNDETACHED). { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for joinable pthread attribute" >&5 printf %s "checking for joinable pthread attribute... " >&6; } cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main (void) { int attr=PTHREAD_CREATE_JOINABLE; ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ok=PTHREAD_CREATE_JOINABLE else case e in #( e) ok=unknown ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext if test x"$ok" = xunknown; then cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include int main (void) { int attr=PTHREAD_CREATE_UNDETACHED; ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ok=PTHREAD_CREATE_UNDETACHED else case e in #( e) ok=unknown ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext fi if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then printf "%s\n" "#define PTHREAD_CREATE_JOINABLE \$ok" >>confdefs.h fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${ok}" >&5 printf "%s\n" "${ok}" >&6; } if test x"$ok" = xunknown; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: we do not know how to create joinable pthreads" >&5 printf "%s\n" "$as_me: WARNING: we do not know how to create joinable pthreads" >&2;} fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if more special flags are required for pthreads" >&5 printf %s "checking if more special flags are required for pthreads... " >&6; } flag=no case "${host_cpu}-${host_os}" in *-aix* | *-freebsd*) flag="-D_THREAD_SAFE";; *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; esac { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ${flag}" >&5 printf "%s\n" "${flag}" >&6; } if test "x$flag" != xno; then PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" fi LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" # More AIX lossage: must compile with cc_r # Extract the first word of "cc_r", so it can be a program name with args. set dummy cc_r; ac_word=$2 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 printf %s "checking for $ac_word... " >&6; } if test ${ac_cv_prog_PTHREAD_CC+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -n "$PTHREAD_CC"; then ac_cv_prog_PTHREAD_CC="$PTHREAD_CC" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then ac_cv_prog_PTHREAD_CC="cc_r" printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS test -z "$ac_cv_prog_PTHREAD_CC" && ac_cv_prog_PTHREAD_CC="${CC}" fi ;; esac fi PTHREAD_CC=$ac_cv_prog_PTHREAD_CC if test -n "$PTHREAD_CC"; then { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PTHREAD_CC" >&5 printf "%s\n" "$PTHREAD_CC" >&6; } else { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 printf "%s\n" "no" >&6; } fi else PTHREAD_CC="$CC" fi # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: if test x"$acx_pthread_ok" = xyes; then printf "%s\n" "#define HAVE_PTHREAD 1" >>confdefs.h : else acx_pthread_ok=no echo "ERROR: Pthread support not found."; exit 1 fi ac_ext=c ac_cpp='$CPP $CPPFLAGS' ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' ac_compiler_gnu=$ac_cv_c_compiler_gnu LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS -D_POSIX_PTHREAD_SEMANTICS" # Some checks for Solaris { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getsockname in -lsocket" >&5 printf %s "checking for getsockname in -lsocket... " >&6; } if test ${ac_cv_lib_socket_getsockname+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-lsocket $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char getsockname (void); int main (void) { return getsockname (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_socket_getsockname=yes else case e in #( e) ac_cv_lib_socket_getsockname=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_getsockname" >&5 printf "%s\n" "$ac_cv_lib_socket_getsockname" >&6; } if test "x$ac_cv_lib_socket_getsockname" = xyes then : printf "%s\n" "#define HAVE_LIBSOCKET 1" >>confdefs.h LIBS="-lsocket $LIBS" fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for getaddrinfo in -lnsl" >&5 printf %s "checking for getaddrinfo in -lnsl... " >&6; } if test ${ac_cv_lib_nsl_getaddrinfo+y} then : printf %s "(cached) " >&6 else case e in #( e) ac_check_lib_save_LIBS=$LIBS LIBS="-lnsl $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. Use char because int might match the return type of a GCC builtin and then its argument prototype would still apply. The 'extern "C"' is for builds by C++ compilers; although this is not generally supported in C code supporting it here has little cost and some practical benefit (sr 110532). */ #ifdef __cplusplus extern "C" #endif char getaddrinfo (void); int main (void) { return getaddrinfo (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO" then : ac_cv_lib_nsl_getaddrinfo=yes else case e in #( e) ac_cv_lib_nsl_getaddrinfo=no ;; esac fi rm -f core conftest.err conftest.$ac_objext conftest.beam \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_nsl_getaddrinfo" >&5 printf "%s\n" "$ac_cv_lib_nsl_getaddrinfo" >&6; } if test "x$ac_cv_lib_nsl_getaddrinfo" = xyes then : printf "%s\n" "#define HAVE_LIBNSL 1" >>confdefs.h LIBS="-lnsl $LIBS" fi # Checks for header files. ac_header= ac_cache= for ac_item in $ac_header_c_list do if test $ac_cache; then ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default" if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then printf "%s\n" "#define $ac_item 1" >> confdefs.h fi ac_header= ac_cache= elif test $ac_header; then ac_cache=$ac_item else ac_header=$ac_item fi done if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes then : printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5 printf %s "checking for grep that handles long lines and -e... " >&6; } if test ${ac_cv_path_GREP+y} then : printf %s "(cached) " >&6 else case e in #( e) if test -z "$GREP"; then ac_path_GREP_found=false # Loop through the user's path and test for each of PROGNAME-LIST as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_prog in grep ggrep do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_GREP="$as_dir$ac_prog$ac_exec_ext" as_fn_executable_p "$ac_path_GREP" || continue # Check for GNU ac_path_GREP and select it if it is found. # Check for GNU $ac_path_GREP case `"$ac_path_GREP" --version 2>&1` in #( *GNU*) ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;; #( *) ac_count=0 printf %s 0123456789 >"conftest.in" while : do cat "conftest.in" "conftest.in" >"conftest.tmp" mv "conftest.tmp" "conftest.in" cp "conftest.in" "conftest.nl" printf "%s\n" 'GREP' >> "conftest.nl" "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break as_fn_arith $ac_count + 1 && ac_count=$as_val if test $ac_count -gt ${ac_path_GREP_max-0}; then # Best one so far, save it but keep looking for a better one ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_max=$ac_count fi # 10*(2^10) chars as input seems more than enough test $ac_count -gt 10 && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out;; esac $ac_path_GREP_found && break 3 done done done IFS=$as_save_IFS if test -z "$ac_cv_path_GREP"; then as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 fi else ac_cv_path_GREP=$GREP fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5 printf "%s\n" "$ac_cv_path_GREP" >&6; } GREP="$ac_cv_path_GREP" # Autoupdate added the next two lines to ensure that your configure # script's behavior did not change. They are probably safe to remove. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5 printf %s "checking for egrep... " >&6; } if test ${ac_cv_path_EGREP+y} then : printf %s "(cached) " >&6 else case e in #( e) if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 then ac_cv_path_EGREP="$GREP -E" else if test -z "$EGREP"; then ac_path_EGREP_found=false # Loop through the user's path and test for each of PROGNAME-LIST as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin do IFS=$as_save_IFS case $as_dir in #((( '') as_dir=./ ;; */) ;; *) as_dir=$as_dir/ ;; esac for ac_prog in egrep do for ac_exec_ext in '' $ac_executable_extensions; do ac_path_EGREP="$as_dir$ac_prog$ac_exec_ext" as_fn_executable_p "$ac_path_EGREP" || continue # Check for GNU ac_path_EGREP and select it if it is found. # Check for GNU $ac_path_EGREP case `"$ac_path_EGREP" --version 2>&1` in #( *GNU*) ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;; #( *) ac_count=0 printf %s 0123456789 >"conftest.in" while : do cat "conftest.in" "conftest.in" >"conftest.tmp" mv "conftest.tmp" "conftest.in" cp "conftest.in" "conftest.nl" printf "%s\n" 'EGREP' >> "conftest.nl" "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break as_fn_arith $ac_count + 1 && ac_count=$as_val if test $ac_count -gt ${ac_path_EGREP_max-0}; then # Best one so far, save it but keep looking for a better one ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_max=$ac_count fi # 10*(2^10) chars as input seems more than enough test $ac_count -gt 10 && break done rm -f conftest.in conftest.tmp conftest.nl conftest.out;; esac $ac_path_EGREP_found && break 3 done done done IFS=$as_save_IFS if test -z "$ac_cv_path_EGREP"; then as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5 fi else ac_cv_path_EGREP=$EGREP fi fi ;; esac fi { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5 printf "%s\n" "$ac_cv_path_EGREP" >&6; } EGREP="$ac_cv_path_EGREP" EGREP_TRADITIONAL=$EGREP ac_cv_path_EGREP_TRADITIONAL=$EGREP ac_fn_c_check_header_compile "$LINENO" "limits.h" "ac_cv_header_limits_h" "$ac_includes_default" if test "x$ac_cv_header_limits_h" = xyes then : printf "%s\n" "#define HAVE_LIMITS_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "err.h" "ac_cv_header_err_h" "$ac_includes_default" if test "x$ac_cv_header_err_h" = xyes then : printf "%s\n" "#define HAVE_ERR_H 1" >>confdefs.h fi ac_fn_c_check_header_compile "$LINENO" "paths.h" "ac_cv_header_paths_h" "$ac_includes_default" if test "x$ac_cv_header_paths_h" = xyes then : printf "%s\n" "#define HAVE_PATHS_H 1" >>confdefs.h fi for ac_header in unistd.h stdio.h stddef.h fcntl.h stdlib.h assert.h errno.h stdarg.h string.h netdb.h do : as_ac_Header=`printf "%s\n" "ac_cv_header_$ac_header" | sed "$as_sed_sh"` ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" if eval test \"x\$"$as_ac_Header"\" = x"yes" then : cat >>confdefs.h <<_ACEOF #define `printf "%s\n" "HAVE_$ac_header" | sed "$as_sed_cpp"` 1 _ACEOF else case e in #( e) echo "ERROR: Required C header missing"; exit 1 ;; esac fi done # Check for linux type transparent proxy support for ac_header in linux/netfilter_ipv4.h do : ac_fn_c_check_header_compile "$LINENO" "linux/netfilter_ipv4.h" "ac_cv_header_linux_netfilter_ipv4_h" " #ifdef HAVE_LIMITS_H #include #endif " if test "x$ac_cv_header_linux_netfilter_ipv4_h" = xyes then : printf "%s\n" "#define HAVE_LINUX_NETFILTER_IPV4_H 1" >>confdefs.h printf "%s\n" "#define LINUX_TRANSPARENT_PROXY 1" >>confdefs.h fi done # Checks for typedefs, structures, and compiler characteristics. { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for an ANSI C-conforming const" >&5 printf %s "checking for an ANSI C-conforming const... " >&6; } if test ${ac_cv_c_const+y} then : printf %s "(cached) " >&6 else case e in #( e) cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main (void) { #ifndef __cplusplus /* Ultrix mips cc rejects this sort of thing. */ typedef int charset[2]; const charset cs = { 0, 0 }; /* SunOS 4.1.1 cc rejects this. */ char const *const *pcpcc; char **ppc; /* NEC SVR4.0.2 mips cc rejects this. */ struct point {int x, y;}; static struct point const zero = {0,0}; /* IBM XL C 1.02.0.0 rejects this. It does not let you subtract one const X* pointer from another in an arm of an if-expression whose if-part is not a constant expression */ const char *g = "string"; pcpcc = &g + (g ? g-g : 0); /* HPUX 7.0 cc rejects these. */ ++pcpcc; ppc = (char**) pcpcc; pcpcc = (char const *const *) ppc; { /* SCO 3.2v4 cc rejects this sort of thing. */ char tx; char *t = &tx; char const *s = 0 ? 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IN NO EVENT SHALL THE dnl COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, dnl INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, dnl BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS dnl OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED dnl AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, dnl OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF dnl THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH dnl DAMAGE. dnl dnl dnl CONTRIBUTORS dnl Stef Walter dnl dnl Process this file with autoconf to produce a configure script. AC_INIT(clamsmtp, 1.10.2, stef@thewalter.net) AM_INIT_AUTOMAKE(clamsmtp, 1.10.2) LDFLAGS="$LDFLAGS -L/usr/local/lib" CFLAGS="$CFLAGS -I/usr/local/include" AC_CONFIG_SRCDIR([src/clamsmtpd.c]) AM_CONFIG_HEADER([config.h]) # Checks for programs. 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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, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . case $1 in '') echo "$0: No command. Try '$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: depcomp [--help] [--version] PROGRAM [ARGS] Run PROGRAMS ARGS to compile a file, generating dependencies as side-effects. Environment variables: depmode Dependency tracking mode. source Source file read by 'PROGRAMS ARGS'. object Object file output by 'PROGRAMS ARGS'. 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IN NO EVENT SHALL THE .\" COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, .\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS .\" OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED .\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, .\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF .\" THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH .\" DAMAGE. .\" .\" .\" CONTRIBUTORS .\" Stef Walter .\" .Dd September, 2004 .Dt clamsmtpd 8 .Os clamsmtp .Sh NAME .Nm clamsmtpd .Nd an SMTP server for scanning viruses via clamd .Sh SYNOPSIS .Nm .Op Fl d Ar level .Op Fl f Ar configfile .Op Fl p Ar pidfile .Nm .Fl v .Sh DESCRIPTION .Nm is an SMTP filter that allows you to check for viruses using the ClamAV anti-virus software. It accepts SMTP connections and forwards the SMTP commands and responses to another SMTP server. .Pp The DATA email body is intercepted and scanned before forwarding. By default email with viruses are dropped silently and logged without any additional action taken. .Pp .Nm aims to be lightweight and simple rather than have a myriad of options. The options it does have are configured by editing the .Xr clamsmtpd.conf 5 file. See the man page for .Xr clamsmtpd.conf 5 for more info on the default location of the configuration file. .Sh OPTIONS Previous versions had more options. These still work for now but have equivalents in .Xr clamsmtpd.conf 5 and are not documented here. The options are as follows. .Bl -tag -width Fl .It Fl d Don't detach from the console and run as a daemon. In addition the .Ar level argument specifies what level of error messages to display. 0 being the least, 4 the most. .It Fl f .Ar configfile specifies an alternate location for the .Nm configuration file. See .Xr clamsmtpd.conf 5 for more details on where the configuration file is located by default. .It Fl p .Ar pidfile specifies a location for the a process id file to be written to. This file contains the process id of .Nm and can be used to stop the daemon. .It Fl v Prints the clamsmtp version number and exits. .El .Sh LOGGING .Nm logs to .Xr syslogd by default under the 'mail' facility. You can also output logs to the console using the .Fl d option. .Sh LOOPBACK FEATURE In some cases it's advantageous to consolidate the virus scanning and filtering for several mail servers on one machine. .Nm allows this by providing a loopback feature to connect back to the IP that an SMTP connection comes in from. .Pp To use this feature specify only a port number (no IP address) for the .Ar OutAddress setting in the configuration file. This will cause .Nm to pass the email back to the said port on the incoming IP address. .Pp Make sure the .Ar MaxConnections setting is set high enough to handle the mail from all the servers without refusing connections. .Sh TRANSPARENT PROXY FEATURE A transparent proxy is a configuration on a gateway that routes certain types of traffic through a proxy server without any changes on the client computers. .Nm has support for transparent proxying of SMTP traffic by enabling the .Ar TransparentProxy setting. This type of setup usually involves firewall rules which redirect traffic to .Nm and the setup varies from OS to OS. The SMTP traffic will be forwarded to it's original destination after being scanned. .Pp When doing transparent proxying for outgoing email it's probably a good idea to turn on bounce notifications using the .Ar Action: bounce setting. Also note that some features (such as SSL/TLS) will not be available when going through the transparent proxy. .Pp Make sure that the .Ar MaxConnections setting is set high enough for your transparent proxying. Because .Nm is not being used as a filter inside a queue, which usually throttles the amount of email going through, this setting may need to be higher than usual. .Sh VIRUS ACTIONS Using the .Ar VirusAction option you can run a script or program whenever a virus is found. This may be handy in certain circumstances but it has several drawbacks. For one, the performance of the virus filtering will take a hit, perhaps DOS'ing your machine under heavy load. Secondly as with running any program there are security implications to be considered. .Pp Please consider the above carefully before implementing a virus action. .Pp The script is run without its output being logged, or return value being checked. Because of this you should test it thoroughly. Make sure it runs without problems under the user that .Xr clamsmtpd 8 is being run as. .Pp Various environment variables will be present when your script is run. You may need to escape them properly before use in your favorite scripting language. Failure to do this could lead to a REMOTE COMPROMISE of your machine. .Bl -tag -width Fl .It Ar CLIENT The network address of the SMTP client connected. .It Ar EMAIL When the .Ar Quarantine option is enabled, this specifies the file that the virus was saved to. .It Ar RECIPIENTS The email addresses of the email recipients. These are specified one per line, in standard address format. .It Ar REMOTE If .Nm is being used to filter email between SMTP servers, then this is the IP address of the original client. In order for this information to be present (a) the SMTP client (sending server) must an send an XFORWARD command and (b) the SMTP server (receiving server) must accept that XFORWARD command without error. .It Ar REMOTE_HELO If .Nm is being used to filter email between SMTP servers, then this is the HELO/EHLO banner of the original client. In order for this information to be present (a) the SMTP client (sending server) must an send an XFORWARD command and (b) the SMTP server (receiving server) must accept that XFORWARD command without error. .It Ar SENDER The email address for the sender of the email. .It Ar SERVER The network address of the SMTP server we're connected to. .It Ar TMPDIR The path to the temp directory in use. This is the same as the .Ar TempDirectory option. .It Ar VIRUS The name of the virus found. .El .Sh SECURITY There's no reason to run this daemon as root. It is meant as a filter and should listen on a high TCP port. It's probably a good idea to run it using the same user as the .Xr clamd 8 daemon. This way the temporary files it writes are accessible to .Xr clamd 8 .Pp Care should be taken with the directory that .Nm writes its temporary files to. In order to be secure, it should not be a world writeable location. Specify the directory using the .Ar TempDirectory setting. .Pp When using the .Ar VirusAction option make sure you understand the security issues involved. Unescaped environment variables can lead to execution of arbitrary shell commands on your machine. .Pp If running .Nm on a publicly accessible IP address or without a firewall please be sure to understand all the possible security issues. This is especially true if the loopback feature is used (see above). .Sh SEE ALSO .Xr clamsmtpd.conf 5 .Xr clamd 8 , .Xr clamdscan 1 .Sh AUTHOR .An Stef Walter Aq stef@memberwebs.com clamsmtp-1.10.2/doc/clamsmtpd.conf000066400000000000000000000030411521601501400170040ustar00rootroot00000000000000# ------------------------------------------------------------------------------ # SAMPLE CLAMSMTPD CONFIG FILE # ------------------------------------------------------------------------------ # # - Comments are a line that starts with a # # - All the options are found below with sample settings # The address to send scanned mail to. # This option is required unless TransparentProxy is enabled OutAddress: 10026 # The maximum number of connection allowed at once. # Be sure that clamd can also handle this many connections #MaxConnections: 64 # Amount of time (in seconds) to wait on network IO #TimeOut: 180 # Keep Alives (ie: NOOP's to server) #KeepAlives: 0 # Send XCLIENT commands to receiving server #XClient: off # Address to listen on (defaults to all local addresses on port 10025) #Listen: 0.0.0.0:10025 # The address clamd is listening on #ClamAddress: /var/run/clamav/clamd # A header to add to all scanned email #Header: X-Virus-Scanned: ClamAV using ClamSMTP # Directory for temporary files #TempDirectory: /tmp # What to do when we see a virus (use 'bounce' or 'pass' or 'drop' #Action: drop # Whether or not to keep virus files #Quarantine: off # Enable transparent proxy support #TransparentProxy: off # User to switch to #User: clamav # Virus actions: There's an option to run a script every time a virus is found. # !IMPORTANT! This can open a hole in your server's security big enough to drive # farm vehicles through. Be sure you know what you're doing. !IMPORTANT! #VirusAction: /path/to/some/script.sh clamsmtp-1.10.2/doc/clamsmtpd.conf.5000066400000000000000000000150001521601501400171450ustar00rootroot00000000000000.\" .\" Copyright (c) 2004, Stefan Walter .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" .\" * Redistributions of source code must retain the above .\" copyright notice, this list of conditions and the .\" following disclaimer. .\" * Redistributions in binary form must reproduce the .\" above copyright notice, this list of conditions and .\" the following disclaimer in the documentation and/or .\" other materials provided with the distribution. .\" * The names of contributors to this software may not be .\" used to endorse or promote products derived from this .\" software without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS .\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT .\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS .\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE .\" COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, .\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS .\" OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED .\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, .\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF .\" THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH .\" DAMAGE. .\" .\" .\" CONTRIBUTORS .\" Stef Walter .\" .Dd September, 2004 .Dt clamsmtpd.conf 5 .Os clamsmtp .Sh NAME .Nm clamsmtpd.conf .Nd the configuration file for .Xr clamsmtpd 8 .Sh DESCRIPTION .Xr clamsmtpd 8 reads a configuration file when starting up. The location of the file is dependent on how you compiled clamsmtp but it should usually be in either the .Pa /usr/local/etc/ or .Pa /etc/ directories. If .Xr clamsmtpd 8 does not find its configuration file it'll print a warning when it starts up along with the location it's expecting to find it in. You can also specify a different location for a config file by passing the .Fl f argument to .Xr clamsmtpd 8 .Pp The settings are specified one per line. The setting names come first, followed by a colon and then the value. Comments start with the '#' character on a line of their own. Whitespace is ignored at the beginning of line, end of line and around the colons. .Pp A sample configuration file can be found in the .Pa doc/ directory of the clamsmtp distribution. .Sh SETTINGS The various settings are as follows: .Bl -tag -width Fl .It Ar Action This option controls what .Xr clamsmtpd 8 does when it finds a virus. The options are: .Bl -inset .It Ar bounce Bounce the email. In most cases this is not a good idea since many viruses spoof sender addresses. .It Ar drop Silently drop the email. Recommended. .It Ar pass Pass on the email. Inserts an 'X-Virus-Infected' header. .El .Pp [ Default: drop ] .It Ar ClamAddress Specifies the address to connect to .Xr clamd 8 on. See syntax of addresses below. .Pp [ Default: .Pa /var/run/clamav/clamd ] .It Ar Header A header to add to scanned messages. Put an empty value to suppress adding a header. You can include the following special formatting characters in the string to include special values: .Bl -inset .It Ar %i Client IP Address .It Ar %l Local IP Address .It Ar %d Current Date .El .Pp You can also include the standard \\r or \\n escapes. .Pp [ Default: 'X-Virus-Scanned: ClamAV using ClamSMTP' ] .It Ar KeepAlives On slow connections the server will sometimes timeout before .Xr clamsmtpd 8 is finished scanning the file. This option sends NOOP's to the server to keep the connection alive. Specify the number of seconds, or 0 to disable. .Pp [ Default: 0 ] .It Ar Listen The address and port to listen for SMTP connections on. See syntax of addresses below. .Pp [ Default: port 10025 on all local IP addresses ] .It Ar PidFile Specifies a location for the a process id file to be written to. This file contains the process id of .Nm and can be used to stop the daemon. If the .Fl p argument is passed on the command line, then this setting will be ignored. .Pp [ Default: none ] .It Ar Quarantine Quarantine files that contain viruses by leaving them in the .Ar TempDirectory directory. The file names look like this (where X is a random character or number): .Pa virus.XXXXXX .Pp [ Default: off ] .It Ar MaxConnections Specifies the maximum number of connections to accept at once. .Xr clamd 8 also needs to be setup to accept at least this number of connections. .Pp [ Default: 64 ] .It Ar OutAddress The address of the SMTP server to send email to once it's been scanned. See syntax of addreses below. .Pp [ Required ] .It Ar TempDirectory The directory to write temp files to. This directory needs to be accessible to both .Xr clamd 8 and .Xr clamsmtpd 8 .Pp [ Default: .Pa /tmp ] .It Ar TimeOut The number of seconds to wait while reading data from network connections. .Pp [ Default: 180 seconds ] .It Ar TransparentProxy This option enables transparent proxy support, which allows you to route all SMTP traffic that's going through a gateway through clamsmtp which will then send it on to its final destination. This setup usually involves firewall rules which redirect traffic to clamsmtp, and the setup varies from OS to OS. .Pp [ Default: off ] .It Ar User The user to run as. If this option is specified then .Xr clamsmtpd 8 must be started as root. It will then drop root privileges and run as the specified user. The user can either be a name or a numerical user id. .Pp [ Optional ] .It Ar VirusAction This is a command to run when a virus is found. See the VIRUS ACTION section in .Xr clamsmtpd 8 for a discussion of this option. .Pp [ Default: off ] .It Ar XClient Send an XCLIENT command to the receiving server. This is useful for forwarding client addresses and connection info to servers that support this feature. .Pp [ Default: off ] .El .Sh ADDRESSES Addresses can be specified in multiple formats: .Bl -bullet .It Unix local addresses can be specified by specifying their full path. (ie: '/var/run/clamav/clamd'). .It IP addresses can be specified using dotted notation with a colon before the port number (ie: '127.0.0.1:3310'). .It IPv6 addresses are implemented but disabled. The code needs testing. .El .Sh SEE ALSO .Xr clamsmtpd 8 .Sh AUTHOR .An Stef Walter Aq stef@memberwebs.com clamsmtp-1.10.2/install-sh000077500000000000000000000361051521601501400154170ustar00rootroot00000000000000#!/usr/bin/sh # install - install a program, script, or datafile scriptversion=2023-11-23.18; # UTC # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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It's used safely in this case." @echo # Tell versions [3.59,3.63) of GNU make to not export all variables. # Otherwise a system limit (for SysV at least) may be exceeded. .NOEXPORT: # Tell GNU make to disable its built-in pattern rules. %:: %,v %:: RCS/%,v %:: RCS/% %:: s.% %:: SCCS/s.% clamsmtp-1.10.2/src/clamsmtpd.c000066400000000000000000000514201521601501400163270ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter */ #include #include #include #include #include #include #include #include #include "usuals.h" #include "compat.h" #include "sock_any.h" #include "stringx.h" #define SP_LEGACY_OPTIONS #include "smtppass.h" /* ----------------------------------------------------------------------- * STRUCTURES */ enum { ACTION_DROP, ACTION_BOUNCE, ACTION_PASS }; typedef struct clstate { /* Settings ------------------------------- */ struct sockaddr_any clamaddr; /* Address for connecting to clamd */ const char* clamname; const char* directory; /* The directory for temp files */ const char* virusaction; /* Program to run when event occurs */ int action; /* Which action to take on a virus */ int quarantine; /* Leave virus files in temp dir */ int debug_files; /* Leave all files in temp dir */ const char* header; /* A header to include in emails */ } clstate_t; typedef struct clctx { spctx_t sp; /* The main sp context */ spio_t clam; /* Connection to clamd */ } clctx_t; /* ----------------------------------------------------------------------- * STRINGS */ #define CRLF "\r\n" #define SMTP_DATAVIRUSOK "250 Virus Detected; Discarded Email" CRLF #define SMTP_DATAVIRUS "550 Virus Detected; Content Rejected" CRLF #define CLAM_OK "OK" #define CLAM_ERROR "ERROR" #define CLAM_FOUND "FOUND" #define CLAM_SCAN "SCAN " #ifdef USE_CLAM_SESSION #define CONNECT_RSP "PONG" #define CLAM_CONNECT "SESSION\nPING\n" #define CLAM_DISCONNECT "END\n" #endif #define DEFAULT_CONFIG CONF_PREFIX "/clamsmtpd.conf" #define DEFAULT_CLAMAV "/var/run/clamav/clamd" #define DEFAULT_HEADER "X-Virus-Scanned: ClamAV using ClamSMTP" #define VIRUS_HEADER "X-Virus-Infected: Virus Detected!" /* ----------------------------------------------------------------------- * CONFIGURATION OPTIONS * * - Be sure your option is relevant to this file. Certain options * should go into smtppass.c * - Add field to clstate_t structure (above) * - Add default (above) and set in main (below). Required options * are difficult to implement under the current structure. It's * better to have a sane default. * - Add config keyword (below) * - Parsing and validation of option in cb_parse_option (below) * - Document in the sample doc/clamsmtpd.conf * - Document in doc/clamsmtpd.conf.5 */ #define CFG_CLAMADDR "ClamAddress" #define CFG_DIRECTORY "TempDirectory" #define CFG_HEADER "Header" #define CFG_SCANHEADER "ScanHeader" #define CFG_HEADER "Header" #define CFG_BOUNCE "Bounce" #define CFG_ACTION "Action" #define CFG_QUARANTINE "Quarantine" #define CFG_DEBUGFILES "DebugFiles" #define CFG_VIRUSACTION "VirusAction" #define VAL_BOUNCE "bounce" #define VAL_DROP "drop" #define VAL_PASS "pass" /* ----------------------------------------------------------------------- * GLOBALS */ clstate_t g_clstate; /* ----------------------------------------------------------------------- * FORWARD DECLARATIONS */ static void usage(); static int connect_clam(clctx_t* ctx); static int disconnect_clam(clctx_t* ctx); static int virus_action(clctx_t* ctx, const char* virus); static int clam_scan_file(clctx_t* ctx, const char** virus); /* ----------------------------------------------------------------------- * SIMPLE MACROS */ /* ---------------------------------------------------------------------------------- * STARTUP ETC... */ #ifndef HAVE___ARGV char** __argv; #endif int main(int argc, char* argv[]) { const char* configfile = DEFAULT_CONFIG; const char* pidfile = NULL; int dbg_level = -1; int warnargs = 0; int ch = 0; int r; char* t; #ifndef HAVE___ARGV __argv = argv; #endif /* Configuration defaults */ memset(&g_clstate, 0, sizeof(g_clstate)); g_clstate.directory = _PATH_TMP; /* We need the default to parse into a useable form, so we do this: */ r = cb_parse_option(CFG_CLAMADDR, DEFAULT_CLAMAV); ASSERT(r == 1); sp_init("clamsmtpd"); /* COMPAT: Setup a default header */ sp_parse_option(CFG_HEADER, DEFAULT_HEADER); /* * We still accept our old arguments for compatibility reasons. * We fill them into the spstate structure directly */ /* Parse the arguments nicely */ while((ch = getopt(argc, argv, "bc:d:D:f:h:l:m:p:qt:v")) != -1) { switch(ch) { /* COMPAT: Actively reject messages */ case 'b': if((r = cb_parse_option(CFG_BOUNCE, "on")) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* COMPAT: Change the CLAM socket */ case 'c': if((r = cb_parse_option(CFG_CLAMADDR, "on")) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* Don't daemonize */ case 'd': dbg_level = strtol(optarg, &t, 10); if(*t) /* parse error */ errx(1, "invalid debug log level"); dbg_level += LOG_ERR; break; /* COMPAT: The directory for the files */ case 'D': if((r = sp_parse_option(CFG_DIRECTORY, optarg)) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* The configuration file */ case 'f': configfile = optarg; break; /* COMPAT: The header to add */ case 'h': if((r = cb_parse_option(CFG_HEADER, optarg)) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* COMPAT: Change our listening port */ case 'l': if((r = sp_parse_option("Listen", optarg)) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* COMPAT: The maximum number of threads */ case 'm': if((r = sp_parse_option("MaxConnections", optarg)) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* Write out a pid file */ case 'p': pidfile = optarg; break; /* COMPAT: The timeout */ case 't': if((r = sp_parse_option("TimeOut", optarg)) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* COMPAT: Leave virus files in directory */ case 'q': if((r = cb_parse_option(CFG_QUARANTINE, "on")) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* Print version number */ case 'v': printf("clamsmtpd (version %s)\n", VERSION); printf(" (config: %s)\n", DEFAULT_CONFIG); exit(0); break; /* COMPAT: Leave all files in the tmp directory */ case 'X': if((r = cb_parse_option(CFG_DEBUGFILES, "on")) < 0) usage(); ASSERT(r == 1); warnargs = 1; break; /* Usage information */ case '?': default: usage(); break; } } argc -= optind; argv += optind; if(argc > 1) usage(); if(argc == 1) { /* COMPAT: The out address */ if((r = sp_parse_option("OutAddress", argv[0])) < 0) usage(); ASSERT(r == 1); warnargs = 1; } if(warnargs) warnx("please use configuration file instead of command-line flags: %s", configfile); r = sp_run(configfile, pidfile, dbg_level); sp_done(); return r; } static void usage() { fprintf(stderr, "usage: clamsmtpd [-d debuglevel] [-f configfile] [-p pidfile]\n"); fprintf(stderr, " clamsmtpd -v\n"); exit(2); } /* ---------------------------------------------------------------------------------- * SP CALLBACKS */ int cb_check_data(spctx_t* sp) { int r = 0; const char* virus; clctx_t* ctx = (clctx_t*)sp; /* ClamAV doesn't like empty files */ if((r = sp_cache_data(sp)) > 0) { /* Connect to clamav */ if(!spio_valid(&(ctx->clam))) r = connect_clam(ctx); if(r != -1) r = clam_scan_file(ctx, &virus); } switch(r) { /* * There was an error tell the client. We haven't notified * the server about any of this yet */ case -1: if(sp_fail_data(sp, NULL) == -1) return -1; break; /* * No virus was found. Now we initiate a connection to the server * and transfer the file to it. */ case 0: if(sp_done_data(sp, g_clstate.header) == -1) return -1; break; /* * A virus was found, normally we just drop the email. But if * requested we can send a simple message back to our client. * The server doesn't know data was ever sent, and the client can * choose to reset the connection to reuse it if it wants. */ case 1: /* Any special post operation actions on the virus */ virus_action(ctx, virus); switch(g_clstate.action) { case ACTION_DROP: if(sp_fail_data(sp, SMTP_DATAVIRUSOK) == -1) return -1; break; case ACTION_BOUNCE: if(sp_fail_data(sp, SMTP_DATAVIRUS) == -1) return -1; break; case ACTION_PASS: if(sp_done_data(sp, VIRUS_HEADER) == -1) return -1; break; default: ASSERT(0 && "Invalid action"); break; } break; default: ASSERT(0 && "Invalid clam_scan_file return value"); break; }; return 0; } int cb_parse_option(const char* name, const char* value) { if(strcasecmp(CFG_CLAMADDR, name) == 0) { if(sock_any_pton(value, &(g_clstate.clamaddr), SANY_OPT_DEFLOCAL) == -1) errx(2, "invalid " CFG_CLAMADDR " socket name: %s", value); g_clstate.clamname = value; return 1; } /* COMPAT: Parse old header option */ else if(strcasecmp(CFG_SCANHEADER, name) == 0) { warnx("please use \"Header\" option instead of \"ScanHeader\""); g_clstate.header = trim_start(value); if(strlen(g_clstate.header) == 0) g_clstate.header = NULL; } else if(strcasecmp(CFG_HEADER, name) == 0) { g_clstate.header = trim_start(value); if(strlen(g_clstate.header) == 0) g_clstate.header = NULL; return 1; } else if(strcasecmp(CFG_DIRECTORY, name) == 0) { g_clstate.directory = value; return 1; } /* COMPAT: Subsumed by the 'Action' option */ else if(strcasecmp(CFG_BOUNCE, name) == 0) { int bounce = strtob(value); if(bounce == -1) errx(2, "invalid value for " CFG_BOUNCE); if(bounce) g_clstate.action = ACTION_BOUNCE; warnx("please use \"Action\" option instead of \"Bounce\""); return 1; } else if(strcasecmp(CFG_ACTION, name) == 0) { if(strcasecmp(VAL_BOUNCE, value) == 0) g_clstate.action = ACTION_BOUNCE; else if(strcasecmp(VAL_DROP, value) == 0) g_clstate.action = ACTION_DROP; else if(strcasecmp(VAL_PASS, value) == 0) g_clstate.action = ACTION_PASS; else errx(2, "invalid value for " CFG_ACTION); return 1; } else if(strcasecmp(CFG_QUARANTINE, name) == 0) { if((g_clstate.quarantine = strtob(value)) == -1) errx(2, "invalid value for " CFG_QUARANTINE); return 1; } else if(strcasecmp(CFG_DEBUGFILES, name) == 0) { if((g_clstate.debug_files = strtob(value)) == -1) errx(2, "invalid value for " CFG_DEBUGFILES); return 1; } else if(strcasecmp(CFG_VIRUSACTION, name) == 0) { g_clstate.virusaction = value; return 1; } return 0; } spctx_t* cb_new_context() { clctx_t* ctx = (clctx_t*)calloc(1, sizeof(clctx_t)); if(!ctx) { sp_messagex(NULL, LOG_CRIT, "out of memory"); return NULL; } /* Initial preparation of the structure */ spio_init(&(ctx->clam), "CLAMAV"); return &(ctx->sp); } void cb_del_context(spctx_t* sp) { clctx_t* ctx = (clctx_t*)sp; int x; ASSERT(sp); disconnect_clam(ctx); free(ctx); if(g_clstate.virusaction) { /* Cleanup any old actions */ while(waitpid(-1, &x, WNOHANG) > 0) ; } } /* ---------------------------------------------------------------------------------- * CLAM AV */ static int connect_clam(clctx_t* ctx) { int ret = 0; spctx_t* sp = &(ctx->sp); ASSERT(ctx); ASSERT(!spio_valid(&(ctx->clam))); if(spio_connect(sp, &(ctx->clam), &(g_clstate.clamaddr), g_clstate.clamname) == -1) RETURN(-1); spio_read_junk(sp, &(ctx->clam)); #ifdef USE_CLAM_SESSION /* Send a session and a check header to ClamAV */ if(spio_write_data(sp, &(ctx->clam), "SESSION\n") == -1) RETURN(-1); spio_read_junk(sp, &(ctx->clam)); /* if(spio_write_data(sp, &(ctx->clam), "PING\n") == -1 || spio_read_line(sp, &(ctx->clam), CLIO_DISCARD | CLIO_TRIM) == -1) RETURN(-1); if(strcmp(sp->line, CONNECT_RESPONSE) != 0) { sp_message(sp, LOG_ERR, "clamd sent an unexpected response: %s", ctx->line); RETURN(-1); } */ #endif cleanup: if(ret < 0 && spio_valid(&(ctx->clam))) spio_disconnect(sp, &(ctx->clam)); return ret; } static int disconnect_clam(clctx_t* ctx) { spctx_t* sp = &(ctx->sp); if(!spio_valid(&(ctx->clam))) return 0; #ifdef USE_CLAM_SESSION if(spio_write_data(sp, &(ctx->clam), CLAM_DISCONNECT) != -1) spio_read_junk(sp, &(ctx->clam)); #endif spio_disconnect(sp, &(ctx->clam)); return 0; } static int clam_scan_file(clctx_t* ctx, const char** virus) { int len, x; int ret = 0; char* line; spctx_t* sp = &(ctx->sp); /* Connect to clamav */ if(!spio_valid(&(ctx->clam))) { if(connect_clam(ctx) == -1) RETURN(-1); } ASSERT(ctx && virus); *virus = NULL; /* Needs to be long enough to hold path names */ ASSERT(SP_LINE_LENGTH > MAXPATHLEN + 32); line = ctx->clam.line; strcpy(line, CLAM_SCAN); strcat(line, sp->cachename); strcat(line, "\n"); if(spio_write_data(sp, &(ctx->clam), line) == -1) RETURN(-1); len = spio_read_line(sp, &(ctx->clam), SPIO_DISCARD | SPIO_TRIM); if(len == 0) { sp_messagex(sp, LOG_ERR, "clamd disconnected unexpectedly"); RETURN(-1); } if(is_last_word(line, CLAM_OK, KL(CLAM_OK))) { sp_add_log(sp, "status=", "CLEAN"); sp_messagex(sp, LOG_DEBUG, "no virus"); RETURN(0); } /* * When a virus is found the returned line from * clamd looks something like this: * * /path/to/virus: Virus.XXXX FOUND */ if(is_last_word(line, CLAM_FOUND, KL(CLAM_FOUND))) { x = strlen(sp->cachename); /* A little sanity check ... */ if(len > x + KL(CLAM_FOUND)) { /* Remove the "FOUND" from the end */ line[len - KL(CLAM_FOUND)] = 0; /* Skip the filename returned, and colon */ line += x + 1; line = trim_space(line); sp_messagex(sp, LOG_DEBUG, "found virus: %s", line); sp_add_log(sp, "status=VIRUS:", line); *virus = line; } else { sp_messagex(sp, LOG_WARNING, "couldn't parse virus name from clamd response: %s", line); sp_add_log(sp, "status=", "VIRUS"); *virus = "Unparsable.Virus.Name"; } RETURN(1); } if(is_last_word(line, CLAM_ERROR, KL(CLAM_ERROR))) { sp_messagex(sp, LOG_ERR, "clamav error: %s", line); sp_add_log(sp, "status=", "CLAMAV-ERROR"); RETURN(-1); } sp_add_log(sp, "status=", "CLAMAV-ERROR"); sp_messagex(sp, LOG_ERR, "unexepected response from clamd: %s", line); RETURN(-1); cleanup: #ifndef USE_CLAM_SESSION disconnect_clam(ctx); #endif return ret; } /* ---------------------------------------------------------------------------------- * TEMP FILE HANDLING */ static int virus_action(clctx_t* ctx, const char* virus) { char qfilename[MAXPATHLEN]; spctx_t* sp = &(ctx->sp); char* t; int i; pid_t pid; if(g_clstate.quarantine) { strlcpy(qfilename, g_clstate.directory, MAXPATHLEN); if (qfilename[strlen(qfilename) - 1] != '/') strlcat(qfilename, "/", MAXPATHLEN); strlcat(qfilename, "virus.", MAXPATHLEN); /* Points to null terminator */ t = qfilename + strlen(qfilename); /* * Yes, I know we're using mktemp. And yet we're doing it in * a safe manner due to the link command below not overwriting * existing files. */ for(;;) { /* Null terminate off the ending, and replace with X's for mktemp */ *t = 0; strlcat(qfilename, "XXXXXX", MAXPATHLEN); if(!mktemp(qfilename)) { sp_message(sp, LOG_ERR, "couldn't create quarantine file name"); return -1; } /* Try to link the file over to the temp */ if(link(sp->cachename, qfilename) == -1) { /* We don't want to allow race conditions */ if(errno == EEXIST) { sp_message(sp, LOG_WARNING, "race condition when quarantining virus file: %s", qfilename); continue; } sp_message(sp, LOG_ERR, "couldn't quarantine virus file"); return -1; } break; } sp_messagex(sp, LOG_INFO, "quarantined virus file as: %s", qfilename); } if(g_clstate.virusaction != NULL) { /* Cleanup any old actions */ while(waitpid(-1, &i, WNOHANG) > 0) ; sp_messagex(sp, LOG_DEBUG, "executing virus action: %s", g_clstate.virusaction); switch(pid = fork()) { case -1: sp_message(sp, LOG_ERR, "couldn't fork for virus action"); return -1; /* The child */ case 0: /* Close std descriptors */ for(i = 0; i <= 2; i++) close(i); /* Set the environment variables */ sp_setup_forked(sp, 0); /* When quarantining we can hand the file name off */ if(g_clstate.quarantine) setenv("EMAIL", qfilename, 1); if(virus) setenv("VIRUS", virus, 1); /* And execute the program */ execl("/bin/sh", "sh", "-c", g_clstate.virusaction, NULL); /* If that returned then there was an error, but there's * not much we can do about it. */ _exit(1); break; }; } return 0; } clamsmtp-1.10.2/src/clamsmtpd.h000066400000000000000000000033151521601501400163340ustar00rootroot00000000000000/* * Copyright (c) 2004, Stefan Walter * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * The names of contributors to this software may not be * used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * * CONTRIBUTORS * Stef Walter * */ #ifndef __CLAMSMTPD_H__ #define __CLAMSMTPD_H__ #endif /* __CLAMSMTPD_H__ */