3 // $Id: spamass-milter.cpp,v 1.90 2006/03/23 21:41:36 dnelson Exp $
6 // - a rather trivial SpamAssassin Sendmail Milter plugin
8 // for information about SpamAssassin please see
9 // http://www.spamassassin.org
11 // for information about Sendmail please see
12 // http://www.sendmail.org
14 // Copyright (c) 2002 Georg C. F. Greve <greve@gnu.org>,
15 // all rights maintained by FSF Europe e.V.,
16 // Villa Vogelsang, Antonienallee 1, 45279 Essen, Germany
19 // {{{ License, Contact, Notes & Includes
21 // This program is free software; you can redistribute it and/or modify
22 // it under the terms of the GNU General Public License as published by
23 // the Free Software Foundation; either version 2 of the License, or
24 // (at your option) any later version.
26 // This program is distributed in the hope that it will be useful,
27 // but WITHOUT ANY WARRANTY; without even the implied warranty of
28 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 // GNU General Public License for more details.
31 // You should have received a copy of the GNU General Public License
32 // along with this program; if not, write to the Free Software
33 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
36 // Michael Brown <michaelb@opentext.com>
41 // The libmilter for sendmail works callback-oriented, so if you have no
42 // experience with event-driven programming, the following may be hard for
45 // The code should be reasonably thread-safe. No guarantees, though.
47 // This program roughly does the following steps:
49 // 1. register filter with libmilter & set up socket
50 // 2. register the callback functions defined in this file
51 // -- wait for mail to show up --
52 // 3. start spamc client
53 // 4. assemble mail since libmilter passes it in pieces and put
54 // these parts in the output pipe to spamc.
55 // 5. when the mail is complete, close the pipe.
56 // 6. read output from spamc, close input pipe and clean up PID
57 // 7. check for the flags affected by SpamAssassin and set/change
59 // 8. replace the body with the one provided by SpamAssassin if the
60 // mail was rated spam, unless -m is specified
61 // 9. free all temporary data
62 // 10. tell sendmail to let the mail to go on (default) or be discarded
63 // -- wait for mail to show up -- (restart at 3)
69 #include <arpa/inet.h>
70 #include <sys/types.h>
73 #include <netinet/in.h>
88 #include "subst_poll.h"
103 #include "libmilter/mfapi.h"
104 //#include "libmilter/mfdef.h"
106 #if !HAVE_DECL_STRSEP
107 char *strsep(char **stringp, const char *delim);
110 #if !HAVE_DECL_DAEMON
111 int daemon(int nochdir, int noclose);
118 #include "spamass-milter.h"
124 #ifndef INADDR_LOOPBACK
125 #define INADDR_LOOPBACK 0x7F000001
130 static const char Id[] = "$Id: spamass-milter.cpp,v 1.90 2006/03/23 21:41:36 dnelson Exp $";
132 struct smfiDesc smfilter =
134 "SpamAssassin", // filter name
135 SMFI_VERSION, // version code -- leave untouched
136 SMFIF_ADDHDRS|SMFIF_CHGHDRS|SMFIF_CHGBODY, // flags
137 mlfi_connect, // info filter callback
138 mlfi_helo, // HELO filter callback
139 mlfi_envfrom, // envelope sender filter callback
140 mlfi_envrcpt, // envelope recipient filter callback
141 mlfi_header, // header filter callback
142 mlfi_eoh, // end of header callback
143 mlfi_body, // body filter callback
144 mlfi_eom, // end of message callback
145 mlfi_abort, // message aborted callback
146 mlfi_close, // connection cleanup callback
149 const char *const debugstrings[] = {
150 "ALL", "FUNC", "POLL", "UORI", "STR", "MISC", "NET", "SPAMC", "RCPT",
155 int flag_debug = (1<<D_ALWAYS);
156 bool flag_reject = false;
157 int reject_score = -1;
158 bool dontmodifyspam = false; // Don't modify/add body or spam results headers
159 bool dontmodify = false; // Don't add SA headers, ever.
160 bool flag_sniffuser = false;
161 char *defaultuser; /* Username to send to spamc if there are multiple recipients */
162 char *defaultdomain; /* Domain to append if incoming address has none */
164 struct networklist ignorenets;
167 bool flag_bucket = false;
168 bool flag_bucket_only = false;
170 bool flag_full_email = false; /* pass full email address to spamc */
171 bool flag_expand = false; /* alias/virtusertable expansion */
172 bool ignore_authenticated_senders = false;
173 bool warnedmacro = false; /* have we logged that we couldn't fetch a macro? */
175 #if defined(__FreeBSD__) /* popen bug - see PR bin/50770 */
176 static pthread_mutex_t popen_mutex = PTHREAD_MUTEX_INITIALIZER;
182 main(int argc, char* argv[])
185 const char *args = "fd:mMp:P:r:u:D:i:Ib:B:e:x";
188 char *pidfilename = NULL;
189 FILE *pidfile = NULL;
191 #ifdef HAVE_VERBOSE_TERMINATE_HANDLER
192 std::set_terminate (__gnu_cxx::__verbose_terminate_handler);
195 openlog("spamass-milter", LOG_PID, LOG_MAIL);
197 /* Process command line options */
198 while ((c = getopt(argc, argv, args)) != -1) {
204 parse_debuglevel(optarg);
207 spamdhost = strdup(optarg);
210 flag_full_email = true;
211 defaultdomain = strdup(optarg);
214 debug(D_MISC, "Parsing ignore list");
215 parse_networklist(optarg, &ignorenets);
218 debug(D_MISC, "Ignore authenticated senders");
219 ignore_authenticated_senders = true;
222 dontmodifyspam = true;
223 smfilter.xxfi_flags &= ~SMFIF_CHGBODY;
227 dontmodifyspam = true;
228 smfilter.xxfi_flags &= ~(SMFIF_CHGBODY|SMFIF_CHGHDRS);
231 sock = strdup(optarg);
234 pidfilename = strdup(optarg);
238 reject_score = atoi(optarg);
241 flag_sniffuser = true;
242 defaultuser = strdup(optarg);
248 fprintf(stderr, "Can only have one -b or -B flag\n");
255 flag_bucket_only = true;
256 smfilter.xxfi_flags |= SMFIF_DELRCPT; // May delete recipients
258 // we will modify the recipient list; if spamc returns
259 // indicating that this mail is spam, the message will be
260 // sent to <optarg>@localhost
261 smfilter.xxfi_flags |= SMFIF_ADDRCPT; // May add recipients
262 // XXX we should probably verify that optarg is vaguely sane
263 spambucket = strdup( optarg );
274 if (flag_full_email && !flag_sniffuser)
276 fprintf(stderr, "-e flag requires -u\n");
280 /* remember the remainer of the arguments so we can pass them to spamc */
281 spamc_argc = argc - optind;
282 spamc_argv = argv + optind;
285 cout << PACKAGE_NAME << " - Version " << PACKAGE_VERSION << endl;
286 cout << "SpamAssassin Sendmail Milter Plugin" << endl;
287 cout << "Usage: spamass-milter -p socket [-b|-B bucket] [-d xx[,yy...]] [-D host]" << endl;
288 cout << " [-e defaultdomain] [-f] [-i networks] [-I] [-m] [-M]" << endl;
289 cout << " [-P pidfile] [-r nn] [-u defaultuser] [-x]" << endl;
290 cout << " [-- spamc args ]" << endl;
291 cout << " -p socket: path to create socket" << endl;
292 cout << " -b bucket: redirect spam to this mail address. The orignal" << endl;
293 cout << " recipient(s) will not receive anything." << endl;
294 cout << " -B bucket: add this mail address as a BCC recipient of spam." << endl;
295 cout << " -d xx[,yy ...]: set debug flags. Logs to syslog" << endl;
296 cout << " -D host: connect to spamd at remote host (deprecated)" << endl;
297 cout << " -e defaultdomain: pass full email address to spamc instead of just\n"
298 " username. Uses 'defaultdomain' if there was none" << endl;
299 cout << " -f: fork into background" << endl;
300 cout << " -i: skip (ignore) checks from these IPs or netblocks" << endl;
301 cout << " example: -i 192.168.12.5,10.0.0.0/8,172.16.0.0/255.255.0.0" << endl;
302 cout << " -I: skip (ignore) checks if sender is authenticated" << endl;
303 cout << " -m: don't modify body, Content-type: or Subject:" << endl;
304 cout << " -M: don't modify the message at all" << endl;
305 cout << " -P pidfile: Put processid in pidfile" << endl;
306 cout << " -r nn: reject messages with a score >= nn with an SMTP error.\n"
307 " use -1 to reject any messages tagged by SA." << endl;
308 cout << " -u defaultuser: pass the recipient's username to spamc.\n"
309 " Uses 'defaultuser' if there are multiple recipients." << endl;
310 cout << " -x: pass email address through alias and virtusertable expansion." << endl;
311 cout << " -- spamc args: pass the remaining flags to spamc." << endl;
319 pidfile = fopen(pidfilename,"w");
322 fprintf(stderr, "Could not open pidfile: %s\n", strerror(errno));
325 /* leave the file open through the fork, since we don't know our pid
333 if (daemon(0, 0) == -1)
335 fprintf(stderr, "daemon() failed: %s\n", strerror(errno));
342 fprintf(pidfile, "%ld\n", (long)getpid());
349 if (stat(sock,&junk) == 0) unlink(sock);
352 (void) smfi_setconn(sock);
353 if (smfi_register(smfilter) == MI_FAILURE) {
354 fprintf(stderr, "smfi_register failed\n");
355 exit(EX_UNAVAILABLE);
357 debug(D_MISC, "smfi_register succeeded");
359 debug(D_ALWAYS, "spamass-milter %s starting", PACKAGE_VERSION);
361 debug(D_ALWAYS, "spamass-milter %s exiting", PACKAGE_VERSION);
369 /* Update a header if SA changes it, or add it if it is new. */
370 void update_or_insert(SpamAssassin* assassin, SMFICTX* ctx, string oldstring, t_setter setter, char *header )
372 string::size_type eoh1 = assassin->d().find("\n\n");
373 string::size_type eoh2 = assassin->d().find("\n\r\n");
374 string::size_type eoh = ( eoh1 < eoh2 ? eoh1 : eoh2 );
377 string::size_type oldsize;
379 debug(D_UORI, "u_or_i: looking at <%s>", header);
380 debug(D_UORI, "u_or_i: oldstring: <%s>", oldstring.c_str());
382 newstring = retrieve_field(assassin->d().substr(0, eoh), header);
383 debug(D_UORI, "u_or_i: newstring: <%s>", newstring.c_str());
385 oldsize = callsetter(*assassin,setter)(newstring);
389 if (newstring != oldstring)
391 /* change if old one was present, append if non-null */
392 char* cstr = const_cast<char*>(newstring.c_str());
395 debug(D_UORI, "u_or_i: changing");
396 smfi_chgheader(ctx, header, 1, newstring.size() > 0 ?
398 } else if (newstring.size() > 0)
400 debug(D_UORI, "u_or_i: inserting");
401 smfi_addheader(ctx, header, cstr);
405 debug(D_UORI, "u_or_i: no change");
413 // implement the changes suggested by SpamAssassin for the mail. Returns
414 // the milter error code.
416 assassinate(SMFICTX* ctx, SpamAssassin* assassin)
418 // find end of header (eol in last line of header)
419 // and beginning of body
420 string::size_type eoh1 = assassin->d().find("\n\n");
421 string::size_type eoh2 = assassin->d().find("\n\r\n");
422 string::size_type eoh = (eoh1 < eoh2) ? eoh1 : eoh2;
423 string::size_type bob = assassin->d().find_first_not_of("\r\n", eoh);
425 if (bob == string::npos)
426 bob = assassin->d().size();
428 update_or_insert(assassin, ctx, assassin->spam_flag(), &SpamAssassin::set_spam_flag, "X-Spam-Flag");
429 update_or_insert(assassin, ctx, assassin->spam_status(), &SpamAssassin::set_spam_status, "X-Spam-Status");
431 /* Summarily reject the message if SA tagged it, or if we have a minimum
432 score, reject if it exceeds that score. */
435 bool do_reject = false;
436 if (reject_score == -1 && !assassin->spam_flag().empty())
438 if (reject_score != -1)
441 const char *spam_status = assassin->spam_status().c_str();
442 /* SA 3.0 uses the keyword "score" */
443 rv = sscanf(spam_status,"%*s score=%d", &score);
446 /* SA 2.x uses the keyword "hits" */
447 rv = sscanf(spam_status,"%*s hits=%d", &score);
450 debug(D_ALWAYS, "Could not extract score from <%s>", spam_status);
453 debug(D_MISC, "SA score: %d", score);
454 if (score >= reject_score)
460 debug(D_MISC, "Rejecting");
461 smfi_setreply(ctx, "550", "5.7.1", "Blocked by SpamAssassin");
466 /* If we also want a copy of the spam, shell out to sendmail and
467 send another copy. The milter API will not let you send the
468 message AND return a failure code to the sender, so this is
469 the only way to do it. */
470 #if defined(__FreeBSD__)
474 #if defined(HAVE_ASPRINTF)
479 char *fmt="%s \"%s\"";
482 #if defined(HAVE_ASPRINTF)
483 asprintf(&buf, fmt, SENDMAIL, spambucket);
485 #if defined(HAVE_SNPRINTF)
486 snprintf(buf, sizeof(buf)-1, fmt, SENDMAIL, spambucket);
488 /* XXX possible buffer overflow here */
489 sprintf(buf, fmt, SENDMAIL, spambucket);
493 debug(D_COPY, "calling %s", buf);
494 #if defined(__FreeBSD__) /* popen bug - see PR bin/50770 */
495 rv = pthread_mutex_lock(&popen_mutex);
498 debug(D_ALWAYS, "Could not lock popen mutex: %s", strerror(rv));
505 debug(D_COPY, "popen failed(%s). Will not send a copy to spambucket", strerror(errno));
508 // Send message provided by SpamAssassin
509 fwrite(assassin->d().c_str(), assassin->d().size(), 1, p);
512 #if defined(__FreeBSD__)
513 rv = pthread_mutex_unlock(&popen_mutex);
516 debug(D_ALWAYS, "Could not unlock popen mutex: %s", strerror(rv));
520 #if defined(HAVE_ASPRINTF)
528 /* Drop the message into the spam bucket if it's spam */
530 if (!assassin->spam_flag().empty()) {
531 // first, add the spambucket address
532 if ( smfi_addrcpt( ctx, spambucket ) != MI_SUCCESS ) {
533 throw string( "Failed to add spambucket to recipients" );
535 if (flag_bucket_only) {
536 // Move recipients to a non-active header, one at a
537 // time. Note, this may generate multiple X-Spam-Orig-To
538 // headers, but that's okay.
539 while( !assassin->recipients.empty()) {
540 if ( smfi_addheader( ctx, "X-Spam-Orig-To", (char *)assassin->recipients.front().c_str()) != MI_SUCCESS ) {
541 throw string( "Failed to save recipient" );
544 // It's not 100% important that this succeeds, so we'll just warn on failure rather than bailing out.
545 if ( smfi_delrcpt( ctx, (char *)assassin->recipients.front().c_str()) != MI_SUCCESS ) {
546 // throw_error really just logs a warning as opposed to actually throw()ing
547 debug(D_ALWAYS, "Failed to remove recipient %s from the envelope", assassin->recipients.front().c_str() );
549 assassin->recipients.pop_front();
555 update_or_insert(assassin, ctx, assassin->spam_report(), &SpamAssassin::set_spam_report, "X-Spam-Report");
556 update_or_insert(assassin, ctx, assassin->spam_prev_content_type(), &SpamAssassin::set_spam_prev_content_type, "X-Spam-Prev-Content-Type");
557 update_or_insert(assassin, ctx, assassin->spam_level(), &SpamAssassin::set_spam_level, "X-Spam-Level");
558 update_or_insert(assassin, ctx, assassin->spam_checker_version(), &SpamAssassin::set_spam_checker_version, "X-Spam-Checker-Version");
561 // If SpamAssassin thinks it is spam, replace
566 // However, only issue the header replacement calls if the content has
567 // actually changed. If SA didn't change subject or content-type, don't
568 // replace here unnecessarily.
569 if (!dontmodifyspam && assassin->spam_flag().size()>0)
571 update_or_insert(assassin, ctx, assassin->subject(), &SpamAssassin::set_subject, "Subject");
572 update_or_insert(assassin, ctx, assassin->content_type(), &SpamAssassin::set_content_type, "Content-Type");
574 // Replace body with the one SpamAssassin provided
575 string::size_type body_size = assassin->d().size() - bob;
576 string body=assassin->d().substr(bob, string::npos);
577 if ( smfi_replacebody(ctx, (unsigned char *)body.c_str(), body_size) == MI_FAILURE )
578 throw string("error. could not replace body.");
582 return SMFIS_CONTINUE;
585 // retrieve the content of a specific field in the header
588 old_retrieve_field(const string& header, const string& field)
590 // look for beginning of content
591 string::size_type pos = find_nocase(header, "\n" + field + ": ");
593 // return empty string if not found
594 if (pos == string::npos)
596 debug(D_STR, "r_f: failed");
600 // look for end of field name
601 pos = find_nocase(header, " ", pos) + 1;
603 string::size_type pos2(pos);
606 if (pos2 == find_nocase(header, "\n", pos2))
609 // look for end of content
612 pos2 = find_nocase(header, "\n", pos2+1);
615 while ( pos2 < string::npos &&
616 isspace(header[pos2+1]) );
618 return header.substr(pos, pos2-pos);
622 // retrieve the content of a specific field in the header
625 retrieve_field(const string& header, const string& field)
628 string::size_type field_start = string::npos;
629 string::size_type field_end = string::npos;
630 string::size_type idx = 0;
632 while( field_start == string::npos ) {
633 idx = find_nocase( header, field + ":", idx );
636 if ( idx == string::npos ) {
640 // The string we've found needs to be either at the start of the
641 // headers string, or immediately following a "\n"
643 if ( header[ idx - 1 ] != '\n' ) {
644 idx++; // so we don't get stuck in an infinite loop
645 continue; // loop around again
652 // A mail field starts just after the header. Ideally, there's a
653 // space, but it's possible that there isn't.
654 field_start += field.length() + 1;
655 if ( field_start < ( header.length() - 1 ) && header[ field_start ] == ' ' ) {
659 // See if there's anything left, to shortcut the rest of the
661 if ( field_start == header.length() - 1 ) {
665 // The field continues to the end of line. If the start of the next
666 // line is whitespace, then the field continues.
668 while( field_end == string::npos ) {
669 idx = header.find( "\n", idx );
671 // if we don't find a "\n", gobble everything to the end of the headers
672 if ( idx == string::npos ) {
673 field_end = header.length();
675 // check the next character
676 if (( idx + 1 ) < header.length() && ( isspace( header[ idx + 1 ] ))) {
677 idx ++; // whitespace found, so wrap to the next line
684 /* if the header line ends in \r\n, don't return the \r */
685 if (header[field_end-1] == '\r')
688 string data = header.substr( field_start, field_end - field_start );
690 /* Replace all CRLF pairs with LF */
692 while ( (idx = data.find("\r\n", idx)) != string::npos )
694 data.replace(idx,2,"\n");
703 // {{{ MLFI callbacks
706 // Gets called once when a client connects to sendmail
708 // gets the originating IP address and checks it against the ignore list
709 // if it isn't in the list, store the IP in a structure and store a
710 // pointer to it in the private data area.
713 mlfi_connect(SMFICTX * ctx, char *hostname, _SOCK_ADDR * hostaddr)
715 struct context *sctx;
718 debug(D_FUNC, "mlfi_connect: enter");
720 /* allocate a structure to store the IP address (and SA object) in */
721 sctx = (struct context *)malloc(sizeof(*sctx));
724 /* not a socket; probably a local user calling sendmail directly */
725 /* set to 127.0.0.1 */
726 sctx->connect_ip.s_addr = htonl(INADDR_LOOPBACK);
729 sctx->connect_ip = ((struct sockaddr_in *) hostaddr)->sin_addr;
731 sctx->assassin = NULL;
734 /* store a pointer to it with setpriv */
735 rv = smfi_setpriv(ctx, sctx);
736 if (rv != MI_SUCCESS)
738 debug(D_ALWAYS, "smfi_setpriv failed!");
739 return SMFIS_TEMPFAIL;
741 /* debug(D_ALWAYS, "ZZZ set private context to %p", sctx); */
743 if (ip_in_networklist(sctx->connect_ip, &ignorenets))
745 debug(D_NET, "%s is in our ignore list - accepting message",
746 inet_ntoa(sctx->connect_ip));
747 debug(D_FUNC, "mlfi_connect: exit ignore");
751 // Tell Milter to continue
752 debug(D_FUNC, "mlfi_connect: exit");
754 return SMFIS_CONTINUE;
758 // Gets called on every "HELO"
760 // stores the result in the context structure
762 sfsistat mlfi_helo(SMFICTX * ctx, char * helohost)
764 struct context *sctx = (struct context*)smfi_getpriv(ctx);
767 sctx->helo = strdup(helohost);
769 return SMFIS_CONTINUE;
773 // Gets called first for all messages
775 // creates SpamAssassin object and makes pointer to it
776 // private data of this filter process
779 mlfi_envfrom(SMFICTX* ctx, char** envfrom)
781 SpamAssassin* assassin;
782 struct context *sctx = (struct context *)smfi_getpriv(ctx);
787 debug(D_ALWAYS, "smfi_getpriv failed!");
788 return SMFIS_TEMPFAIL;
790 /* debug(D_ALWAYS, "ZZZ got private context %p", sctx); */
792 if (ignore_authenticated_senders)
796 auth_authen = smfi_getsymval(ctx, "{auth_authen}");
797 debug(D_MISC, "auth_authen=%s", auth_authen ?: "<unauthenticated>");
801 debug(D_MISC, "sender authenticated (%s) - accepting message",
803 debug(D_FUNC, "mlfi_envfrom: exit ignore");
808 debug(D_FUNC, "mlfi_envfrom: enter");
810 // launch new SpamAssassin
811 assassin=new SpamAssassin;
812 } catch (string& problem)
814 throw_error(problem);
815 return SMFIS_TEMPFAIL;
818 assassin->set_connectip(string(inet_ntoa(sctx->connect_ip)));
820 // Store a pointer to the assassin object in our context struct
821 sctx->assassin = assassin;
823 // remember the MAIL FROM address
824 assassin->set_from(string(envfrom[0]));
826 queueid=smfi_getsymval(ctx,"i");
830 warnmacro("i", "ENVFROM");
832 assassin->queueid = queueid;
834 debug(D_MISC, "queueid=%s", queueid);
836 // tell Milter to continue
837 debug(D_FUNC, "mlfi_envfrom: exit");
839 return SMFIS_CONTINUE;
843 // Gets called once for each recipient
845 // stores the first recipient in the spamassassin object and
846 // stores all addresses and the number thereof (some redundancy)
851 mlfi_envrcpt(SMFICTX* ctx, char** envrcpt)
853 struct context *sctx = (struct context*)smfi_getpriv(ctx);
854 SpamAssassin* assassin = sctx->assassin;
856 #if defined(__FreeBSD__)
860 debug(D_FUNC, "mlfi_envrcpt: enter");
864 /* open a pipe to sendmail so we can do address expansion */
867 char *fmt="%s -bv \"%s\" 2>&1";
869 #if defined(HAVE_SNPRINTF)
870 snprintf(buf, sizeof(buf)-1, fmt, SENDMAIL, envrcpt[0]);
872 /* XXX possible buffer overflow here */
873 sprintf(buf, fmt, SENDMAIL, envrcpt[0]);
876 debug(D_RCPT, "calling %s", buf);
878 #if defined(__FreeBSD__) /* popen bug - see PR bin/50770 */
879 rv = pthread_mutex_lock(&popen_mutex);
882 debug(D_ALWAYS, "Could not lock popen mutex: %s", strerror(rv));
890 debug(D_RCPT, "popen failed(%s). Will not expand aliases", strerror(errno));
891 assassin->expandedrcpt.push_back(envrcpt[0]);
894 while (fgets(buf, sizeof(buf), p) != NULL)
897 /* strip trailing EOLs */
898 while (i > 0 && buf[i - 1] <= ' ')
901 debug(D_RCPT, "sendmail output: %s", buf);
902 /* From a quick scan of the sendmail source, a valid email
903 address gets printed via either
904 "deliverable: mailer %s, host %s, user %s"
905 or "deliverable: mailer %s, user %s"
907 if (strstr(buf, "... deliverable: mailer "))
909 char *p=strstr(buf,", user ");
910 /* anything after ", user " is the email address */
911 debug(D_RCPT, "user: %s", p+7);
912 assassin->expandedrcpt.push_back(p+7);
917 #if defined(__FreeBSD__)
918 rv = pthread_mutex_unlock(&popen_mutex);
921 debug(D_ALWAYS, "Could not unlock popen mutex: %s", strerror(rv));
927 assassin->expandedrcpt.push_back(envrcpt[0]);
929 debug(D_RCPT, "Total of %d actual recipients", (int)assassin->expandedrcpt.size());
931 if (assassin->numrcpt() == 0)
933 /* Send the envelope headers as X-Envelope-From: and
934 X-Envelope-To: so that SpamAssassin can use them in its
935 whitelist checks. Also forge as complete a dummy
936 Received: header as possible because SA gets a lot of
939 HReceived: $?sfrom $s $.$?_($?s$|from $.$_)
940 $.$?{auth_type}(authenticated$?{auth_ssf} bits=${auth_ssf}$.)
941 $.by $j ($v/$Z)$?r with $r$. id $i$?{tls_version}
942 (version=${tls_version} cipher=${cipher} bits=${cipher_bits} verify=${verify})$.$?u
948 const char *macro_b, *macro_i, *macro_j, *macro_r,
949 *macro_s, *macro_v, *macro_Z, *macro__;
953 macro_b = smfi_getsymval(ctx, "b");
958 strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %z", localtime(&tval));
960 warnmacro("b", "ENVRCPT");
964 macro_i = smfi_getsymval(ctx, "i");
968 warnmacro("i", "ENVRCPT");
971 /* FQDN of this site */
972 macro_j = smfi_getsymval(ctx, "j");
975 macro_j = "localhost";
976 warnmacro("j", "ENVRCPT");
979 /* Protocol used to receive the message */
980 macro_r = smfi_getsymval(ctx, "r");
984 warnmacro("r", "ENVRCPT");
987 /* Sendmail currently cannot pass us the {s} macro, but
988 I do not know why. Leave this in for the day sendmail is
989 fixed. Until that day, use the value remembered by
992 macro_s = smfi_getsymval(ctx, "s");
994 macro_s = sctx->helo;
998 /* Sendmail binary version */
999 macro_v = smfi_getsymval(ctx, "v");
1003 warnmacro("v", "ENVRCPT");
1006 /* Sendmail .cf version */
1007 macro_Z = smfi_getsymval(ctx, "Z");
1011 warnmacro("Z", "ENVRCPT");
1014 /* Validated sending site's address */
1015 macro__ = smfi_getsymval(ctx, "_");
1018 macro__ = "unknown";
1019 warnmacro("_", "ENVRCPT");
1022 assassin->output((string)"X-Envelope-From: "+assassin->from()+"\r\n");
1023 assassin->output((string)"X-Envelope-To: "+envrcpt[0]+"\r\n");
1025 assassin->output((string)
1026 "Received: from "+macro_s+" ("+macro__+")\r\n\t"+
1027 "by "+macro_j+"("+macro_v+"/"+macro_Z+") with "+macro_r+" id "+macro_i+"\r\n\t"+
1029 "(envelope-from "+assassin->from()+"\r\n");
1032 assassin->output((string)"X-Envelope-To: "+envrcpt[0]+"\r\n");
1034 /* increment RCPT TO: count */
1035 assassin->set_numrcpt();
1037 /* If we expanded to at least one user and we haven't recorded one yet,
1038 record the first one */
1039 if (!assassin->expandedrcpt.empty() && (assassin->rcpt().size() == 0))
1041 debug(D_RCPT, "remembering %s for spamc", assassin->expandedrcpt.front().c_str());
1042 assassin->set_rcpt(assassin->expandedrcpt.front());
1045 debug(D_RCPT, "remembering recipient %s", envrcpt[0]);
1046 assassin->recipients.push_back( envrcpt[0] ); // XXX verify that this worked
1048 debug(D_FUNC, "mlfi_envrcpt: exit");
1050 return SMFIS_CONTINUE;
1054 // Gets called repeatedly for all header fields
1056 // assembles the headers and passes them on to the SpamAssassin client
1057 // through the pipe.
1059 // only exception: SpamAssassin header fields (X-Spam-*) get suppressed
1060 // but are being stored in the SpamAssassin element.
1062 // this function also starts the connection with the SPAMC program the
1063 // first time it is called.
1067 mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
1069 SpamAssassin* assassin = ((struct context *)smfi_getpriv(ctx))->assassin;
1070 debug(D_FUNC, "mlfi_header: enter");
1072 // Check if the SPAMC program has already been run, if not we run it.
1073 if ( !(assassin->connected) )
1076 assassin->connected = 1; // SPAMC is getting ready to run
1077 assassin->Connect();
1079 catch (string& problem) {
1080 throw_error(problem);
1081 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1083 debug(D_FUNC, "mlfi_header: exit error connect");
1084 return SMFIS_TEMPFAIL;
1088 // Is it a "X-Spam-" header field?
1089 if ( cmp_nocase_partial("X-Spam-", headerf) == 0 )
1092 // memorize content of old fields
1094 if ( cmp_nocase_partial("X-Spam-Status", headerf) == 0 )
1095 assassin->set_spam_status(headerv);
1096 else if ( cmp_nocase_partial("X-Spam-Flag", headerf) == 0 )
1097 assassin->set_spam_flag(headerv);
1098 else if ( cmp_nocase_partial("X-Spam-Report", headerf) == 0 )
1099 assassin->set_spam_report(headerv);
1100 else if ( cmp_nocase_partial("X-Spam-Prev-Content-Type", headerf) == 0 )
1101 assassin->set_spam_prev_content_type(headerv);
1102 else if ( cmp_nocase_partial("X-Spam-Level", headerf) == 0 )
1103 assassin->set_spam_level(headerv);
1104 else if ( cmp_nocase_partial("X-Spam-Checker-Version", headerf) == 0 )
1105 assassin->set_spam_checker_version(headerv);
1108 /* Hm. X-Spam header, but not one we recognize. Pass it through. */
1114 debug(D_FUNC, "mlfi_header: suppress");
1115 return SMFIS_CONTINUE;
1119 // Content-Type: will be stored if present
1120 if ( cmp_nocase_partial("Content-Type", headerf) == 0 )
1121 assassin->set_content_type(headerv);
1123 // Subject: should be stored
1124 if ( cmp_nocase_partial("Subject", headerf) == 0 )
1125 assassin->set_subject(headerv);
1127 // assemble header to be written to SpamAssassin
1128 string header = string(headerf) + ": " + headerv + "\r\n";
1131 // write to SpamAssassin client
1132 assassin->output(header.c_str(),header.size());
1133 } catch (string& problem)
1135 throw_error(problem);
1136 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1138 debug(D_FUNC, "mlfi_header: exit error output");
1139 return SMFIS_TEMPFAIL;
1143 debug(D_FUNC, "mlfi_header: exit");
1145 return SMFIS_CONTINUE;
1149 // Gets called once when the header is finished.
1151 // writes empty line to SpamAssassin client to separate
1152 // headers from body.
1155 mlfi_eoh(SMFICTX* ctx)
1157 SpamAssassin* assassin = ((struct context *)smfi_getpriv(ctx))->assassin;
1159 debug(D_FUNC, "mlfi_eoh: enter");
1161 // Check if the SPAMC program has already been run, if not we run it.
1162 if ( !(assassin->connected) )
1165 assassin->connected = 1; // SPAMC is getting ready to run
1166 assassin->Connect();
1168 catch (string& problem) {
1169 throw_error(problem);
1170 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1173 debug(D_FUNC, "mlfi_eoh: exit error connect");
1174 return SMFIS_TEMPFAIL;
1179 // add blank line between header and body
1180 assassin->output("\r\n",2);
1181 } catch (string& problem)
1183 throw_error(problem);
1184 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1187 debug(D_FUNC, "mlfi_eoh: exit error output");
1188 return SMFIS_TEMPFAIL;
1193 debug(D_FUNC, "mlfi_eoh: exit");
1194 return SMFIS_CONTINUE;
1198 // Gets called repeatedly to transmit the body
1200 // writes everything directly to SpamAssassin client
1203 mlfi_body(SMFICTX* ctx, u_char *bodyp, size_t bodylen)
1205 debug(D_FUNC, "mlfi_body: enter");
1206 SpamAssassin* assassin = ((struct context *)smfi_getpriv(ctx))->assassin;
1210 assassin->output(bodyp, bodylen);
1211 } catch (string& problem)
1213 throw_error(problem);
1214 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1216 debug(D_FUNC, "mlfi_body: exit error");
1217 return SMFIS_TEMPFAIL;
1221 debug(D_FUNC, "mlfi_body: exit");
1222 return SMFIS_CONTINUE;
1226 // Gets called once at the end of mail processing
1228 // tells SpamAssassin client that the mail is complete
1229 // through EOF and then modifies the mail accordingly by
1230 // calling the "assassinate" function
1233 mlfi_eom(SMFICTX* ctx)
1235 SpamAssassin* assassin = ((struct context *)smfi_getpriv(ctx))->assassin;
1238 debug(D_FUNC, "mlfi_eom: enter");
1241 // close output pipe to signal EOF to SpamAssassin
1242 assassin->close_output();
1244 // read what the Assassin is telling us
1247 milter_status = assassinate(ctx, assassin);
1249 // now cleanup the element.
1250 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1253 } catch (string& problem)
1255 throw_error(problem);
1256 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1258 debug(D_FUNC, "mlfi_eom: exit error");
1259 return SMFIS_TEMPFAIL;
1263 debug(D_FUNC, "mlfi_eom: exit");
1264 return milter_status;
1268 // Gets called on session-basis. This keeps things nice & quiet.
1271 mlfi_close(SMFICTX* ctx)
1273 struct context *sctx;
1274 debug(D_FUNC, "mlfi_close");
1276 sctx = (struct context*)smfi_getpriv(ctx);
1278 return SMFIS_ACCEPT;
1283 smfi_setpriv(ctx, NULL);
1285 return SMFIS_ACCEPT;
1289 // Gets called when things are being aborted.
1291 // kills the SpamAssassin object, its destructor should
1292 // take care of everything.
1295 mlfi_abort(SMFICTX* ctx)
1297 SpamAssassin* assassin = ((struct context *)smfi_getpriv(ctx))->assassin;
1299 debug(D_FUNC, "mlfi_abort");
1300 ((struct context *)smfi_getpriv(ctx))->assassin=NULL;
1303 return SMFIS_ACCEPT;
1308 // {{{ SpamAssassin Class
1311 // This is a new constructor for the SpamAssassin object. It simply
1312 // initializes two variables. The original constructor has been
1313 // renamed to Connect().
1315 SpamAssassin::SpamAssassin():
1324 SpamAssassin::~SpamAssassin()
1328 // close all pipes that are still open
1329 if (pipe_io[0][0] > -1) close(pipe_io[0][0]);
1330 if (pipe_io[0][1] > -1) close(pipe_io[0][1]);
1331 if (pipe_io[1][0] > -1) close(pipe_io[1][0]);
1332 if (pipe_io[1][1] > -1) close(pipe_io[1][1]);
1334 // child still running?
1337 // make sure the pid is valid
1342 // wait for child to terminate
1344 waitpid(pid, &status, 0);
1349 // Clean up the recip list. Might be overkill, but it's good housekeeping.
1350 while( !recipients.empty())
1352 recipients.pop_front();
1354 // Clean up the recip list. Might be overkill, but it's good housekeeping.
1355 while( !expandedrcpt.empty())
1357 expandedrcpt.pop_front();
1362 // This is the old SpamAssassin constructor. It has been renamed Connect(),
1363 // and is now called at the beginning of the mlfi_header() function.
1366 void SpamAssassin::Connect()
1368 // set up pipes for in- and output
1369 if (pipe(pipe_io[0]))
1370 throw string(string("pipe error: ")+string(strerror(errno)));
1371 if (pipe(pipe_io[1]))
1372 throw string(string("pipe error: ")+string(strerror(errno)));
1374 // now execute SpamAssassin client for contact with SpamAssassin spamd
1376 // start child process
1377 switch(pid = fork())
1380 // forking trouble. throw error.
1381 throw string(string("fork error: ")+string(strerror(errno)));
1386 // close unused pipes
1387 close(pipe_io[1][0]);
1388 close(pipe_io[0][1]);
1390 // redirect stdin(0), stdout(1) and stderr(2)
1391 dup2(pipe_io[0][0],0);
1392 dup2(pipe_io[1][1],1);
1393 dup2(pipe_io[1][1],2);
1398 // absolute path (determined in autoconf)
1399 // should be a little more secure
1400 // XXX arbitrary 100-argument max
1402 char** argv = (char**) malloc(100*sizeof(char*));
1403 argv[argc++] = SPAMC;
1406 argv[argc++] = "-u";
1407 if ( expandedrcpt.size() != 1 )
1409 // More (or less?) than one recipient, so we pass the default
1410 // username to SPAMC. This way special rules can be defined for
1411 // multi recipient messages.
1412 debug(D_RCPT, "%d recipients; spamc gets default username %s", (int)expandedrcpt.size(), defaultuser);
1413 argv[argc++] = defaultuser;
1416 // There is only 1 recipient so we pass the username
1417 // (converted to lowercase) to SPAMC. Don't worry about
1418 // freeing this memory as we're exec()ing anyhow.
1419 if (flag_full_email)
1420 argv[argc] = strlwr(strdup(full_user().c_str()));
1422 argv[argc] = strlwr(strdup(local_user().c_str()));
1424 debug(D_RCPT, "spamc gets %s", argv[argc]);
1431 argv[argc++] = "-d";
1432 argv[argc++] = spamdhost;
1436 memcpy(argv+argc, spamc_argv, spamc_argc * sizeof(char *));
1441 execvp(argv[0] , argv); // does not return!
1444 throw_error(string("execution error: ")+string(strerror(errno)));
1451 // close unused pipes
1452 close(pipe_io[0][0]);
1453 close(pipe_io[1][1]);
1457 // mark the pipes non-blocking
1458 if(fcntl(pipe_io[0][1], F_SETFL, O_NONBLOCK) == -1)
1459 throw string(string("Cannot set pipe01 nonblocking: ")+string(strerror(errno)));
1460 #if 0 /* don't really need to make the sink pipe nonblocking */
1461 if(fcntl(pipe_io[1][0], F_SETFL, O_NONBLOCK) == -1)
1462 throw string(string("Cannot set pipe10 nonblocking: ")+string(strerror(errno)));
1465 // we have to assume the client is running now.
1468 /* If we have any buffered output, write it now. */
1469 if (outputbuffer.size())
1471 output(outputbuffer);
1476 // write to SpamAssassin
1478 SpamAssassin::output(const void* buffer, long size)
1480 debug(D_FUNC, "::output enter");
1482 debug(D_SPAMC, "output \"%*.*s\"", (int)size, (int)size, (char *)buffer);
1484 // if there are problems, fail.
1486 throw string("tried output despite problems. failed.");
1488 /* If we haven't launched spamc yet, just store the data */
1491 /* Silly C++ can't tell the difference between
1492 (const char*, string::size_type) and
1493 (string::size_type, char), so we have to cast the parameters.
1495 outputbuffer.append((const char *)buffer,(string::size_type)size);
1496 debug(D_FUNC, "::output exit1");
1500 // send to SpamAssassin
1506 struct pollfd fds[2];
1507 int nfds = 2, nready;
1508 fds[0].fd = pipe_io[0][1];
1509 fds[0].events = POLLOUT;
1510 fds[1].fd = pipe_io[1][0];
1511 fds[1].events = POLLIN;
1513 debug(D_POLL, "polling fds %d and %d", pipe_io[0][1], pipe_io[1][0]);
1514 nready = poll(fds, nfds, 1000);
1516 throw("poll failed");
1518 debug(D_POLL, "poll returned %d, fd0=%d, fd1=%d", nready, fds[0].revents, fds[1].revents);
1520 if (fds[1].revents & (POLLERR|POLLNVAL|POLLHUP))
1522 throw string("poll says my read pipe is busted");
1525 if (fds[0].revents & (POLLERR|POLLNVAL|POLLHUP))
1527 throw string("poll says my write pipe is busted");
1530 if (fds[1].revents & POLLIN)
1532 debug(D_POLL, "poll says I can read");
1536 if (fds[0].revents & POLLOUT)
1538 debug(D_POLL, "poll says I can write");
1539 switch(wsize = write(pipe_io[0][1], (char *)buffer + total, size - total))
1542 if (errno == EAGAIN)
1544 reason = string(strerror(errno));
1547 close(pipe_io[0][1]);
1548 close(pipe_io[1][0]);
1559 // wait until child is dead
1560 waitpid(pid, &status, 0);
1562 throw string(string("write error: ")+reason);
1566 debug(D_POLL, "wrote %ld bytes", wsize);
1570 } while ( total < size );
1572 debug(D_FUNC, "::output exit2");
1575 void SpamAssassin::output(const void* buffer)
1577 output(buffer, strlen((const char *)buffer));
1580 void SpamAssassin::output(string buffer)
1582 output(buffer.c_str(), buffer.size());
1585 // close output pipe
1587 SpamAssassin::close_output()
1589 if(close(pipe_io[0][1]))
1590 throw string(string("close error: ")+string(strerror(errno)));
1595 SpamAssassin::input()
1597 debug(D_FUNC, "::input enter");
1598 // if the child has exited or we experienced an error, return
1600 if (!running || error)
1602 debug(D_FUNC, "::input exit1");
1606 // keep reading from input pipe until it is empty
1607 empty_and_close_pipe();
1609 // that's it, we're through
1612 // wait until child is dead
1614 if(waitpid(pid, &status, 0)<0)
1617 throw string(string("waitpid error: ")+string(strerror(errno)));
1619 debug(D_FUNC, "::input exit2");
1623 // return reference to mail
1632 // get values of the different SpamAssassin fields
1635 SpamAssassin::spam_status()
1637 return x_spam_status;
1641 SpamAssassin::spam_flag()
1647 SpamAssassin::spam_report()
1649 return x_spam_report;
1653 SpamAssassin::spam_prev_content_type()
1655 return x_spam_prev_content_type;
1659 SpamAssassin::spam_checker_version()
1661 return x_spam_checker_version;
1665 SpamAssassin::spam_level()
1667 return x_spam_level;
1671 SpamAssassin::content_type()
1673 return _content_type;
1677 SpamAssassin::subject()
1683 SpamAssassin::rcpt()
1689 SpamAssassin::from()
1695 SpamAssassin::connectip()
1702 SpamAssassin::local_user()
1704 // assuming we have a recipient in the form: <username@somehost.somedomain>
1705 // (angle brackets optional) we return 'username'
1706 if (_rcpt[0] == '<')
1707 return _rcpt.substr(1, _rcpt.find_first_of("@+")-1);
1709 return _rcpt.substr(0, _rcpt.find_first_of("@+"));
1713 SpamAssassin::full_user()
1716 // assuming we have a recipient in the form: <username@somehost.somedomain>
1717 // (angle brackets optional) we return 'username@somehost.somedomain'
1718 if (_rcpt[0] == '<')
1719 name = _rcpt.substr(1, _rcpt.find('>')-1);
1722 if(name.find('@') == string::npos)
1724 /* if the name had no domain part (local delivery), append the default one */
1725 name = name + "@" + defaultdomain;
1731 SpamAssassin::numrcpt()
1737 SpamAssassin::set_numrcpt()
1744 SpamAssassin::set_numrcpt(const int val)
1751 // set the values of the different SpamAssassin
1752 // fields in our element. Returns former size of field
1755 SpamAssassin::set_spam_status(const string& val)
1757 string::size_type old = x_spam_status.size();
1758 x_spam_status = val;
1763 SpamAssassin::set_spam_flag(const string& val)
1765 string::size_type old = x_spam_flag.size();
1771 SpamAssassin::set_spam_report(const string& val)
1773 string::size_type old = x_spam_report.size();
1774 x_spam_report = val;
1779 SpamAssassin::set_spam_prev_content_type(const string& val)
1781 string::size_type old = x_spam_prev_content_type.size();
1782 x_spam_prev_content_type = val;
1787 SpamAssassin::set_spam_checker_version(const string& val)
1789 string::size_type old = x_spam_checker_version.size();
1790 x_spam_checker_version = val;
1795 SpamAssassin::set_spam_level(const string& val)
1797 string::size_type old = x_spam_level.size();
1803 SpamAssassin::set_content_type(const string& val)
1805 string::size_type old = _content_type.size();
1806 _content_type = val;
1811 SpamAssassin::set_subject(const string& val)
1813 string::size_type old = _subject.size();
1819 SpamAssassin::set_rcpt(const string& val)
1821 string::size_type old = _rcpt.size();
1827 SpamAssassin::set_from(const string& val)
1829 string::size_type old = _from.size();
1835 SpamAssassin::set_connectip(const string& val)
1837 string::size_type old = _connectip.size();
1843 // Read available output from SpamAssassin client
1846 SpamAssassin::read_pipe()
1853 debug(D_FUNC, "::read_pipe enter");
1855 if (pipe_io[1][0] == -1)
1857 debug(D_FUNC, "::read_pipe exit - shouldn't have been called?");
1861 size = read(pipe_io[1][0], iobuff, 1024);
1866 reason = string(strerror(errno));
1868 // Close remaining pipe.
1869 close(pipe_io[1][0]);
1879 // wait until child is dead
1880 waitpid(pid, &status, 0);
1882 // throw the error message that caused this trouble
1883 throw string(string("read error: ")+reason);
1884 } else if ( size == 0 )
1887 // EOF. Close the pipe
1888 if(close(pipe_io[1][0]))
1889 throw string(string("close error: ")+string(strerror(errno)));
1894 // append to mail buffer
1895 mail.append(iobuff, size);
1896 debug(D_POLL, "read %ld bytes", size);
1897 debug(D_SPAMC, "input \"%*.*s\"", (int)size, (int)size, iobuff);
1899 debug(D_FUNC, "::read_pipe exit");
1904 // Read all output from SpamAssassin client
1905 // and close the pipe
1908 SpamAssassin::empty_and_close_pipe()
1910 debug(D_FUNC, "::empty_and_close_pipe enter");
1913 debug(D_FUNC, "::empty_and_close_pipe exit");
1918 // {{{ Some small subroutines without much relation to functionality
1920 // output error message to syslog facility
1922 throw_error(const string& errmsg)
1925 syslog(LOG_ERR, "Thrown error: %s", errmsg.c_str());
1927 syslog(LOG_ERR, "Unknown error");
1930 /* Takes a comma or space-delimited string of debug tokens and sets the
1931 appropriate bits in flag_debug. "all" sets all the bits.
1933 void parse_debuglevel(char* string)
1937 /* make a copy so we don't overwrite argv[] */
1938 string = strdup(string);
1940 /* handle the old numeric values too */
1941 switch(atoi(string))
1944 flag_debug |= (1<<D_UORI) | (1<<D_STR);
1946 flag_debug |= (1<<D_POLL);
1948 flag_debug |= (1<<D_MISC) | (1<<D_FUNC);
1949 debug(D_ALWAYS, "Setting debug level to 0x%0x", flag_debug);
1956 while ((token = strsep(&string, ", ")))
1959 for (i=0; debugstrings[i]; i++)
1961 if(strcasecmp(token, "ALL")==0)
1963 flag_debug = (1<<D_MAX)-1;
1966 if(strcasecmp(token, debugstrings[i])==0)
1968 flag_debug |= (1<<i);
1973 if (!debugstrings[i])
1975 fprintf(stderr, "Invalid debug token \"%s\"\n", token);
1979 debug(D_ALWAYS, "Setting debug level to 0x%0x", flag_debug);
1984 Output a line to syslog using print format, but only if the appropriate
1985 debug level is set. The D_ALWAYS level is always enabled.
1987 void debug(enum debuglevel level, const char* fmt, ...)
1989 if ((1<<level) & flag_debug)
1991 #if defined(HAVE_VSYSLOG)
1994 vsyslog(LOG_ERR, fmt, vl);
1997 #if defined(HAVE_VASPRINTF)
2004 #if defined(HAVE_VASPRINTF)
2005 vasprintf(&buf, fmt, vl);
2007 #if defined(HAVE_VSNPRINTF)
2008 vsnprintf(buf, sizeof(buf)-1, fmt, vl);
2010 /* XXX possible buffer overflow here; be careful what you pass to debug() */
2011 vsprintf(buf, fmt, vl);
2015 syslog(LOG_ERR, "%s", buf);
2016 #if defined(HAVE_VASPRINTF)
2019 #endif /* vsyslog */
2023 // case-insensitive search
2025 find_nocase(const string& array, const string& pattern, string::size_type start)
2027 string::size_type pos(start);
2029 while (pos < array.size())
2031 string::size_type ctr = 0;
2033 while( (pos+ctr) < array.size() &&
2034 toupper(array[pos+ctr]) == toupper(pattern[ctr]) )
2037 if (ctr == pattern.size())
2039 debug(D_STR, "f_nc: <%s><%s>: hit", array.c_str(), pattern.c_str());
2047 debug(D_STR, "f_nc: <%s><%s>: nohit", array.c_str(), pattern.c_str());
2048 return string::npos;
2051 // compare case-insensitive
2053 cmp_nocase_partial(const string& s, const string& s2)
2055 string::const_iterator p=s.begin();
2056 string::const_iterator p2=s2.begin();
2058 while ( p != s.end() && p2 <= s2.end() ) {
2059 if (toupper(*p) != toupper(*p2))
2061 debug(D_STR, "c_nc_p: <%s><%s> : miss", s.c_str(), s2.c_str());
2062 return (toupper(*p) < toupper(*p2)) ? -1 : 1;
2068 debug(D_STR, "c_nc_p: <%s><%s> : hit", s.c_str(), s2.c_str());
2073 /* closeall() - close all FDs >= a specified value */
2074 void closeall(int fd)
2076 int fdlimit = sysconf(_SC_OPEN_MAX);
2077 while (fd < fdlimit)
2081 void parse_networklist(char *string, struct networklist *list)
2085 /* make a copy so we don't overwrite argv[] */
2086 string = strdup(string);
2088 while ((token = strsep(&string, ", ")))
2090 char *tnet = strsep(&token, "/");
2091 char *tmask = token;
2092 struct in_addr net, mask;
2094 if (list->num_nets % 10 == 0)
2095 list->nets = (struct net*)realloc(list->nets, sizeof(*list->nets) * (list->num_nets + 10));
2097 if (!inet_aton(tnet, &net))
2099 fprintf(stderr, "Could not parse \"%s\" as a network\n", tnet);
2105 if (strchr(tmask, '.') == NULL)
2110 ret = sscanf(tmask, "%u", &bits);
2111 if (ret != 1 || bits > 32)
2113 fprintf(stderr,"%s: bad CIDR value", tmask);
2116 mask.s_addr = htonl(~((1L << (32 - bits)) - 1) & 0xffffffff);
2117 } else if (!inet_aton(tmask, &mask))
2119 fprintf(stderr, "Could not parse \"%s\" as a netmask\n", tmask);
2123 mask.s_addr = 0xffffffff;
2126 char *snet = strdup(inet_ntoa(net));
2127 debug(D_MISC, "Adding %s/%s to network list", snet, inet_ntoa(mask));
2131 net.s_addr = net.s_addr & mask.s_addr;
2132 list->nets[list->num_nets].network = net;
2133 list->nets[list->num_nets].netmask = mask;
2139 int ip_in_networklist(struct in_addr ip, struct networklist *list)
2143 if (list->num_nets == 0)
2146 debug(D_NET, "Checking %s against:", inet_ntoa(ip));
2147 for (i = 0; i < list->num_nets; i++)
2149 debug(D_NET, "%s", inet_ntoa(list->nets[i].network));
2150 debug(D_NET, "/%s", inet_ntoa(list->nets[i].netmask));
2151 if ((ip.s_addr & list->nets[i].netmask.s_addr) == list->nets[i].network.s_addr)
2153 debug(D_NET, "Hit!");
2161 char *strlwr(char *str)
2172 /* Log a message about missing milter macros, but only the first time */
2173 void warnmacro(char *macro, char *scope)
2177 debug(D_ALWAYS, "Could not retrieve sendmail macro \"%s\"!. Please add it to confMILTER_MACROS_%s for better spamassassin results",
2183 // vim6:ai:noexpandtab