3 * slocal.c -- asynchronously filter and deliver new mail
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
11 * Under sendmail, users should add the line
13 * "| /usr/local/nmh/lib/slocal"
15 * to their $HOME/.forward file.
19 /* Changed to use getutent() and friends. Assumes that when getutent() exists,
20 * a number of other things also exist. Please check.
21 * Ruud de Rooij <ruud@ruud.org> Sun, 28 May 2000 17:28:55 +0200
25 #include <h/dropsbr.h>
26 #include <h/rcvmail.h>
27 #include <h/signals.h>
34 #include <sys/ioctl.h>
37 /* This define is needed for Berkeley db v2 and above to
38 * make the header file expose the 'historical' ndbm APIs.
39 * We define it unconditionally because this is simple and
42 #define DB_DBM_HSEARCH 1
52 # define UTMP_FILE _PATH_UTMP
54 # define UTMP_FILE "/etc/utmp"
59 static struct swit switches[] = {
61 { "addr address", 0 },
67 { "sender address", 0 },
69 { "mailbox file", 0 },
71 { "home directory", -4 },
75 { "maildelivery file", 0 },
80 #define SUPPRESSDUP 10
82 #define NSUPPRESSDUP 11
83 { "nosuppressdup", 0 },
93 static int globbed = 0; /* have we built "vars" table yet? */
94 static int parsed = 0; /* have we built header field table yet */
95 static int utmped = 0; /* have we scanned umtp(x) file yet */
96 static int suppressdup = 0; /* are we suppressing duplicate messages? */
98 static int verbose = 0;
101 static char *addr = NULL;
102 static char *user = NULL;
103 static char *info = NULL;
104 static char *file = NULL;
105 static char *sender = NULL;
106 static char *envelope = NULL; /* envelope information ("From " line) */
107 static char *mbox = NULL;
108 static char *home = NULL;
110 static struct passwd *pw; /* passwd file entry */
112 static char ddate[BUFSIZ]; /* record the delivery date */
115 static jmp_buf myctx;
117 /* flags for pair->p_flags */
119 #define P_ADR 0x01 /* field is address */
120 #define P_HID 0x02 /* special (fake) field */
132 * Lookup table for matching fields and patterns
133 * in messages. The rest of the table is added
134 * when the message is parsed.
136 static struct pair hdrs[NVEC + 1] = {
137 { "source", NULL, P_HID },
138 { "addr", NULL, P_HID },
139 { "Return-Path", NULL, P_ADR },
140 { "Reply-To", NULL, P_ADR },
141 { "From", NULL, P_ADR },
142 { "Sender", NULL, P_ADR },
143 { "To", NULL, P_ADR },
144 { "cc", NULL, P_ADR },
145 { "Resent-Reply-To", NULL, P_ADR },
146 { "Resent-From", NULL, P_ADR },
147 { "Resent-Sender", NULL, P_ADR },
148 { "Resent-To", NULL, P_ADR },
149 { "Resent-cc", NULL, P_ADR },
154 * The list of builtin variables to expand in a string
155 * before it is executed by the "pipe" or "qpipe" action.
157 static struct pair vars[] = {
158 { "sender", NULL, P_NIL },
159 { "address", NULL, P_NIL },
160 { "size", NULL, P_NIL },
161 { "reply-to", NULL, P_CHK },
162 { "info", NULL, P_NIL },
166 extern char **environ;
171 static int localmail (int, char *);
172 static int usr_delivery (int, char *, int);
173 static int split (char *, char **);
174 static int parse (int);
175 static void expand (char *, char *, int);
176 static void glob (int);
177 static struct pair *lookup (struct pair *, char *);
178 static int logged_in (void);
179 static int timely (char *, char *);
180 static int usr_file (int, char *, int);
181 static int usr_pipe (int, char *, char *, char **, int);
182 static int usr_folder (int, char *);
183 static void alrmser (int);
184 static void get_sender (char *, char **);
185 static int copy_message (int, char *, int);
186 static void verbose_printf (char *fmt, ...);
187 static void adorn (char *, char *, ...);
188 static void debug_printf (char *fmt, ...);
189 static int suppress_duplicates (int, char *);
190 static char *trim (char *);
194 main (int argc, char **argv)
198 char *cp, *mdlvr = NULL, buf[BUFSIZ];
199 char mailbox[BUFSIZ], tmpfil[BUFSIZ];
200 char **argp, **arguments;
203 setlocale(LC_ALL, "");
205 invo_name = r1bindex (*argv, '/');
207 /* foil search of user profile/context */
208 if (context_foil (NULL) == -1)
211 mts_init (invo_name);
212 arguments = getarguments (invo_name, argc, argv, 0);
215 /* Parse arguments */
216 while ((cp = *argp++)) {
218 switch (smatch (++cp, switches)) {
220 ambigsw (cp, switches);
223 adios (NULL, "-%s unknown", cp);
226 snprintf (buf, sizeof(buf),
227 "%s [switches] [address info sender]", invo_name);
228 print_help (buf, switches, 0);
231 print_version(invo_name);
235 if (!(addr = *argp++))/* allow -xyz arguments */
236 adios (NULL, "missing argument to %s", argp[-2]);
239 if (!(info = *argp++))/* allow -xyz arguments */
240 adios (NULL, "missing argument to %s", argp[-2]);
243 if (!(user = *argp++))/* allow -xyz arguments */
244 adios (NULL, "missing argument to %s", argp[-2]);
247 if (!(file = *argp++) || *file == '-')
248 adios (NULL, "missing argument to %s", argp[-2]);
251 if (!(sender = *argp++))/* allow -xyz arguments */
252 adios (NULL, "missing argument to %s", argp[-2]);
255 if (!(mbox = *argp++) || *mbox == '-')
256 adios (NULL, "missing argument to %s", argp[-2]);
259 if (!(home = *argp++) || *home == '-')
260 adios (NULL, "missing argument to %s", argp[-2]);
264 if (!(cp = *argp++) || *cp == '-')
265 adios (NULL, "missing argument to %s", argp[-2]);
267 adios (NULL, "only one maildelivery file at a time!");
290 switch (argp - (argv + 1)) {
306 addr = getusername ();
308 user = (cp = strchr(addr, '.')) ? ++cp : addr;
309 if ((pw = getpwnam (user)) == NULL)
310 adios (NULL, "no such local user as %s", user);
312 if (chdir (pw->pw_dir) == -1)
316 if (geteuid() == 0) {
318 initgroups (pw->pw_name, pw->pw_gid);
325 setbuf (stdin, NULL);
327 /* Record the delivery time */
328 if ((now = dlocaltimenow ()) == NULL)
329 adios (NULL, "unable to ascertain local time");
330 snprintf (ddate, sizeof(ddate), "Delivery-Date: %s\n", dtimenow (0));
333 * Copy the message to a temporary file
338 /* getting message from file */
339 if ((tempfd = open (file, O_RDONLY)) == -1)
340 adios (file, "unable to open");
342 debug_printf ("retrieving message from file \"%s\"\n", file);
343 if ((fd = copy_message (tempfd, tmpfil, 1)) == -1)
344 adios (NULL, "unable to create temporary file");
347 /* getting message from stdin */
349 debug_printf ("retrieving message from stdin\n");
350 if ((fd = copy_message (fileno (stdin), tmpfil, 1)) == -1)
351 adios (NULL, "unable to create temporary file");
355 debug_printf ("temporary file=\"%s\"\n", tmpfil);
357 /* Delete the temp file now or a copy of every single message passed through
358 slocal will be left in the /tmp directory until deleted manually! This
359 unlink() used to be under an 'else' of the 'if (debug)' above, but since
360 some people like to always run slocal with -debug and log the results,
361 the /tmp directory would get choked over time. Of course, now that we
362 always delete the temp file, the "temporary file=" message above is
363 somewhat pointless -- someone watching debug output wouldn't have a
364 chance to 'tail -f' or 'ln' the temp file before it's unlinked. The best
365 thing would be to delay this unlink() until later if debug == 1, but I'll
366 leave that for someone who cares about the temp-file-accessing
367 functionality (they'll have to watch out for cases where we adios()). */
370 if (!(fp = fdopen (fd, "r+")))
371 adios (NULL, "unable to access temporary file");
374 * If no sender given, extract it
375 * from envelope information. */
377 get_sender (envelope, &sender);
380 snprintf (mailbox, sizeof(mailbox), "%s/%s",
381 mmdfldir[0] ? mmdfldir : pw->pw_dir,
382 mmdflfil[0] ? mmdflfil : pw->pw_name);
389 debug_printf ("addr=\"%s\"\n", trim(addr));
390 debug_printf ("user=\"%s\"\n", trim(user));
391 debug_printf ("info=\"%s\"\n", trim(info));
392 debug_printf ("sender=\"%s\"\n", trim(sender));
393 debug_printf ("envelope=\"%s\"\n", envelope ? trim(envelope) : "");
394 debug_printf ("mbox=\"%s\"\n", trim(mbox));
395 debug_printf ("home=\"%s\"\n", trim(home));
396 debug_printf ("ddate=\"%s\"\n", trim(ddate));
397 debug_printf ("now=%02d:%02d\n\n", now->tw_hour, now->tw_min);
400 /* deliver the message */
401 status = localmail (fd, mdlvr);
403 done (status != -1 ? RCV_MOK : RCV_MBX);
409 * Main routine for delivering message.
413 localmail (int fd, char *mdlvr)
415 /* check if this message is a duplicate */
417 suppress_duplicates(fd, mdlvr ? mdlvr : ".maildelivery") == DONE)
420 /* delivery according to personal Maildelivery file */
421 if (usr_delivery (fd, mdlvr ? mdlvr : ".maildelivery", 0) != -1)
424 /* delivery according to global Maildelivery file */
425 if (usr_delivery (fd, maildelivery, 1) != -1)
429 verbose_printf ("(delivering to standard mail spool)\n");
431 /* last resort - deliver to standard mail spool */
432 return usr_file (fd, mbox, MBOX_FORMAT);
436 #define matches(a,b) (stringdex (b, a) >= 0)
439 * Parse the delivery file, and process incoming message.
443 usr_delivery (int fd, char *delivery, int su)
445 int i, accept, status=1, won, vecp, next;
446 char *field, *pattern, *action, *result, *string;
447 char buffer[BUFSIZ], tmpbuf[BUFSIZ];
448 char *cp, *vec[NVEC];
453 /* open the delivery file */
454 if ((fp = fopen (delivery, "r")) == NULL)
457 /* check if delivery file has bad ownership or permissions */
458 if (fstat (fileno (fp), &st) == -1
459 || (st.st_uid != 0 && (su || st.st_uid != pw->pw_uid))
460 || st.st_mode & (S_IWGRP|S_IWOTH)) {
462 verbose_printf ("WARNING: %s has bad ownership/modes (su=%d,uid=%d,owner=%d,mode=0%o)\n",
463 delivery, su, (int) pw->pw_uid, (int) st.st_uid, (int) st.st_mode);
471 /* read and process delivery file */
472 while (fgets (buffer, sizeof(buffer), fp)) {
473 /* skip comments and empty lines */
474 if (*buffer == '#' || *buffer == '\n')
477 /* zap trailing newline */
478 if ((cp = strchr(buffer, '\n')))
481 /* split buffer into fields */
482 vecp = split (buffer, vec);
484 /* check for too few fields */
487 debug_printf ("WARNING: entry with only %d fields, skipping.\n", vecp);
492 for (i = 0; vec[i]; i++)
493 debug_printf ("vec[%d]: \"%s\"\n", i, trim(vec[i]));
502 /* find out how to perform the action */
507 * If previous condition failed, don't
508 * do this - else fall through
511 continue; /* else fall */
515 * If already delivered, skip this action. Else
516 * consider delivered if action is successful.
519 continue; /* else fall */
524 * Take action, and consider delivered if
525 * action is successful.
534 * Take action, but don't consider delivered, even
535 * if action is successful
542 if (!mh_strcasecmp (vec[5], "select")) {
543 if (logged_in () != -1)
545 if (vecp > 7 && timely (vec[6], vec[7]) == -1)
550 /* check if the field matches */
558 * "default" matches only if the message hasn't
559 * been delivered yet.
561 if (!mh_strcasecmp (field, "default")) {
568 /* parse message and build lookup table */
569 if (!parsed && parse (fd) == -1) {
574 * find header field in lookup table, and
575 * see if the pattern matches.
577 if ((p = lookup (hdrs, field)) && (p->p_value != NULL)
578 && matches (p->p_value, pattern)) {
587 /* find out the action to perform */
590 /* deliver to quoted pipe */
591 if (mh_strcasecmp (action, "qpipe"))
592 continue; /* else fall */
594 expand (tmpbuf, string, fd);
595 if (split (tmpbuf, vec) < 1)
597 status = usr_pipe (fd, tmpbuf, vec[0], vec, 0);
601 /* deliver to pipe */
602 if (mh_strcasecmp (action, "pipe"))
603 continue; /* else fall */
607 expand (tmpbuf, string, fd);
610 status = usr_pipe (fd, tmpbuf, "/bin/sh", vec + 2, 0);
615 if (!mh_strcasecmp (action, "file")) {
616 status = usr_file (fd, string, MBOX_FORMAT);
619 /* deliver to nmh folder */
620 else if (mh_strcasecmp (action, "folder"))
621 continue; /* else fall */
623 status = usr_folder (fd, string);
628 if (!mh_strcasecmp (action, "mmdf")) {
629 status = usr_file (fd, string, MMDF_FORMAT);
633 else if (mh_strcasecmp (action, "mbox"))
634 continue; /* else fall */
638 status = usr_file (fd, string, MBOX_FORMAT);
643 if (mh_strcasecmp (action, "destroy"))
649 if (status) next = 0; /* action failed, mark for 'N' result */
651 if (accept && status == 0)
656 return (won ? 0 : -1);
663 * Split buffer into fields (delimited by whitespace or
664 * comma's). Return the number of fields found.
668 split (char *cp, char **vec)
675 /* split into a maximum of NVEC fields */
676 for (i = 0; i <= NVEC;) {
679 /* zap any whitespace and comma's */
680 while (isspace (*s) || *s == ',')
683 /* end of buffer, time to leave */
687 /* get double quote text as a single field */
689 for (vec[i++] = ++s; *s && *s != '"'; s++) {
691 * Check for escaped double quote. We need
692 * to shift the string to remove slash.
700 if (*s == '"') /* zap trailing double quote */
705 if (*s == QUOTE && *++s != '"')
709 /* move forward to next field delimiter */
710 while (*s && !isspace (*s) && *s != ',')
720 * Parse the headers of a message, and build the
721 * lookup table for matching fields and patterns.
730 char name[NAMESZ], field[BUFSIZ];
737 /* get a new FILE pointer to message */
738 if ((fd1 = dup (fd)) == -1)
740 if ((in = fdopen (fd1, "r")) == NULL) {
746 /* add special entries to lookup table */
747 if ((p = lookup (hdrs, "source")))
748 p->p_value = getcpy (sender);
749 if ((p = lookup (hdrs, "addr")))
750 p->p_value = getcpy (addr);
753 * Scan the headers of the message and build
756 for (i = 0, state = FLD;;) {
757 switch (state = m_getfld (state, name, field, sizeof(field), in)) {
761 lp = add (field, NULL);
762 while (state == FLDPLUS) {
763 state = m_getfld (state, name, field, sizeof(field), in);
764 lp = add (field, lp);
766 for (p = hdrs; p->p_name; p++) {
767 if (!mh_strcasecmp (p->p_name, name)) {
768 if (!(p->p_flags & P_HID)) {
769 if ((cp = p->p_value)) {
770 if (p->p_flags & P_ADR) {
771 dp = cp + strlen (cp) - 1;
774 cp = add (",\n\t", cp);
779 p->p_value = add (lp, cp);
785 if (p->p_name == NULL && i < NVEC) {
786 p->p_name = getcpy (name);
803 advise (NULL, "format error in message");
807 advise (NULL, "internal error in m_getfld");
815 if ((p = lookup (vars, "reply-to"))) {
816 if ((q = lookup (hdrs, "reply-to")) == NULL || q->p_value == NULL)
817 q = lookup (hdrs, "from");
818 p->p_value = getcpy (q ? q->p_value : "");
819 p->p_flags &= ~P_CHK;
821 debug_printf ("vars[%d]: name=\"%s\" value=\"%s\"\n",
822 p - vars, p->p_name, trim(p->p_value));
825 for (p = hdrs; p->p_name; p++)
826 debug_printf ("hdrs[%d]: name=\"%s\" value=\"%s\"\n",
827 p - hdrs, p->p_name, p->p_value ? trim(p->p_value) : "");
838 * Expand any builtin variables such as $(sender),
839 * $(address), etc., in a string.
843 expand (char *s1, char *s2, int fd)
851 while ((c = *s2++)) {
852 if (c != '$' || *s2 != LPAREN) {
855 for (cp = ++s2; *s2 && *s2 != RPAREN; s2++)
862 if ((p = lookup (vars, cp))) {
863 if (!parsed && (p->p_flags & P_CHK))
866 strcpy (s1, p->p_value);
876 * Fill in the information missing from the "vars"
877 * table, which is necessary to expand any builtin
878 * variables in the string for a "pipe" or "qpipe"
892 if ((p = lookup (vars, "sender")))
893 p->p_value = getcpy (sender);
894 if ((p = lookup (vars, "address")))
895 p->p_value = getcpy (addr);
896 if ((p = lookup (vars, "size"))) {
897 snprintf (buffer, sizeof(buffer), "%d",
898 fstat (fd, &st) != -1 ? (int) st.st_size : 0);
899 p->p_value = getcpy (buffer);
901 if ((p = lookup (vars, "info")))
902 p->p_value = getcpy (info);
905 for (p = vars; p->p_name; p++)
906 debug_printf ("vars[%d]: name=\"%s\" value=\"%s\"\n",
907 p - vars, p->p_name, trim(p->p_value));
913 * Find a matching name in a lookup table. If found,
914 * return the "pairs" entry, else return NULL.
918 lookup (struct pair *pairs, char *key)
920 for (; pairs->p_name; pairs++)
921 if (!mh_strcasecmp (pairs->p_name, key))
929 * Check utmp(x) file to see if user is currently
944 while ((utp = getutent()) != NULL) {
946 #ifdef HAVE_STRUCT_UTMP_UT_TYPE
947 utp->ut_type == USER_PROCESS
951 && strncmp (user, utp->ut_name, sizeof(utp->ut_name)) == 0) {
955 return (utmped = DONE);
960 return (utmped = NOTOK);
972 if ((uf = fopen (UTMP_FILE, "r")) == NULL)
975 while (fread ((char *) &ut, sizeof(ut), 1, uf) == 1) {
976 if (ut.ut_name[0] != 0
977 && strncmp (user, ut.ut_name, sizeof(ut.ut_name)) == 0) {
981 return (utmped = DONE);
986 return (utmped = NOTOK);
990 #define check(t,a,b) if (t < a || t > b) return -1
991 #define cmpar(h1,m1,h2,m2) if (h1 < h2 || (h1 == h2 && m1 < m2)) return 0
994 timely (char *t1, char *t2)
996 int t1hours, t1mins, t2hours, t2mins;
998 if (sscanf (t1, "%d:%d", &t1hours, &t1mins) != 2)
1000 check (t1hours, 0, 23);
1001 check (t1mins, 0, 59);
1003 if (sscanf (t2, "%d:%d", &t2hours, &t2mins) != 2)
1005 check (t2hours, 0, 23);
1006 check (t2mins, 0, 59);
1008 cmpar (now->tw_hour, now->tw_min, t1hours, t1mins);
1009 cmpar (t2hours, t2mins, now->tw_hour, now->tw_min);
1016 * Deliver message by appending to a file.
1020 usr_file (int fd, char *mailbox, int mbx_style)
1025 verbose_printf ("delivering to file \"%s\"", mailbox);
1027 if (mbx_style == MBOX_FORMAT) {
1029 verbose_printf (" (mbox style)");
1033 verbose_printf (" (mmdf style)");
1037 /* open and lock the file */
1038 if ((md = mbx_open (mailbox, mbx_style, pw->pw_uid, pw->pw_gid, m_gmprot())) == -1) {
1040 adorn ("", "unable to open:");
1044 lseek (fd, (off_t) 0, SEEK_SET);
1046 /* append message to file */
1047 if (mbx_copy (mailbox, mbx_style, md, fd, mapping, NULL, verbose) == -1) {
1049 adorn ("", "error writing to:");
1053 /* close and unlock file */
1054 if (mbx_close (mailbox, md) == NOTOK) {
1056 adorn ("", "error closing:");
1061 verbose_printf (", success.\n");
1067 * Deliver message to a nmh folder.
1071 usr_folder (int fd, char *string)
1074 char folder[BUFSIZ], *vec[3];
1076 /* get folder name ready */
1078 strncpy(folder, string, sizeof(folder));
1080 snprintf(folder, sizeof(folder), "+%s", string);
1083 verbose_printf ("delivering to folder \"%s\"", folder + 1);
1085 vec[0] = "rcvstore";
1089 /* use rcvstore to put message in folder */
1090 status = usr_pipe (fd, "rcvstore", rcvstoreproc, vec, 1);
1094 * Currently, verbose status messages are handled by usr_pipe().
1098 verbose_printf (", success.\n");
1100 verbose_printf (", failed.\n");
1108 * Deliver message to a process.
1112 usr_pipe (int fd, char *cmd, char *pgm, char **vec, int suppress)
1115 int i, bytes, seconds, status;
1118 if (verbose && !suppress)
1119 verbose_printf ("delivering to pipe \"%s\"", cmd);
1121 lseek (fd, (off_t) 0, SEEK_SET);
1123 for (i = 0; (child_id = fork()) == -1 && i < 5; i++)
1130 adorn ("fork", "unable to");
1137 freopen ("/dev/null", "w", stdout);
1138 freopen ("/dev/null", "w", stderr);
1144 if ((fd = open ("/dev/tty", O_RDWR)) != -1) {
1145 ioctl (fd, TIOCNOTTY, NULL);
1148 #endif /* TIOCNOTTY */
1150 setpgid ((pid_t) 0, getpid ()); /* put in own process group */
1153 m_putenv ("USER", pw->pw_name);
1154 m_putenv ("HOME", pw->pw_dir);
1155 m_putenv ("SHELL", pw->pw_shell);
1161 /* parent process */
1162 if (!setjmp (myctx)) {
1163 SIGNAL (SIGALRM, alrmser);
1164 bytes = fstat (fd, &st) != -1 ? (int) st.st_size : 100;
1166 /* amount of time to wait depends on message size */
1168 /* give at least 5 minutes */
1170 } else if (bytes >= 90000) {
1171 /* a half hour is long enough */
1174 seconds = (bytes / 60) + 300;
1176 alarm ((unsigned int) seconds);
1177 status = pidwait (child_id, 0);
1182 verbose_printf (", success.\n");
1184 if ((status & 0xff00) == 0xff00)
1185 verbose_printf (", system error\n");
1187 pidstatus (status, stdout, ", failed");
1189 return (status == 0 ? 0 : -1);
1192 * Ruthlessly kill the child and anything
1193 * else in its process group.
1195 killpg(child_id, SIGKILL);
1197 verbose_printf (", timed-out; terminated\n");
1207 longjmp (myctx, DONE);
1212 * Get the `sender' from the envelope
1213 * information ("From " line).
1217 get_sender (char *envelope, char **sender)
1221 unsigned char buffer[BUFSIZ];
1223 if (envelope == NULL) {
1224 *sender = getcpy ("");
1228 i = strlen ("From ");
1229 strncpy (buffer, envelope + i, sizeof(buffer));
1230 if ((cp = strchr(buffer, '\n'))) {
1240 for (cp = buffer + strlen (buffer) - 1; cp >= buffer; cp--)
1245 *sender = getcpy (buffer);
1250 * Copy message into a temporary file.
1251 * While copying, it will do some header processing
1252 * including the extraction of the envelope information.
1256 copy_message (int qd, char *tmpfil, int fold)
1258 int i, first = 1, fd1, fd2;
1259 char buffer[BUFSIZ];
1263 tfile = m_mktemp2(NULL, invo_name, &fd1, NULL);
1264 if (tfile == NULL) return -1;
1266 strncpy (tmpfil, tfile, BUFSIZ);
1269 while ((i = read (qd, buffer, sizeof(buffer))) > 0)
1270 if (write (fd1, buffer, i) != i) {
1278 lseek (fd1, (off_t) 0, SEEK_SET);
1282 /* dup the fd for incoming message */
1283 if ((fd2 = dup (qd)) == -1) {
1288 /* now create a FILE pointer for it */
1289 if ((qfp = fdopen (fd2, "r")) == NULL) {
1295 /* dup the fd for temporary file */
1296 if ((fd2 = dup (fd1)) == -1) {
1302 /* now create a FILE pointer for it */
1303 if ((ffp = fdopen (fd2, "r+")) == NULL) {
1311 * copy message into temporary file
1312 * and massage the headers. Save
1313 * a copy of the "From " line for later.
1315 i = strlen ("From ");
1316 while (fgets (buffer, sizeof(buffer), qfp)) {
1319 if (!strncmp (buffer, "From ", i)) {
1320 /* get copy of envelope information ("From " line) */
1321 envelope = getcpy (buffer);
1324 /* First go ahead and put "From " line in message */
1325 fputs (buffer, ffp);
1330 /* Put the delivery date in message */
1339 fputs (buffer, ffp);
1351 lseek (fd1, (off_t) 0, SEEK_SET);
1363 * Trim strings for pretty printing of debugging output
1369 char buffer[BUFSIZ*4];
1370 unsigned char *bp, *sp;
1375 /* copy string into temp buffer */
1376 strncpy (buffer, cp, sizeof(buffer));
1379 /* skip over leading whitespace */
1380 while (isspace(*bp))
1383 /* start at the end and zap trailing whitespace */
1384 for (sp = bp + strlen(bp) - 1; sp >= bp; sp--) {
1391 /* replace remaining whitespace with spaces */
1392 for (sp = bp; *sp; sp++)
1396 /* now return a copy */
1401 * Function for printing `verbose' messages.
1405 verbose_printf (char *fmt, ...)
1410 vfprintf (stdout, fmt, ap);
1413 fflush (stdout); /* now flush output */
1418 * Function for printing `verbose' delivery
1423 adorn (char *what, char *fmt, ...)
1429 eindex = errno; /* save the errno */
1430 fprintf (stdout, ", ");
1433 vfprintf (stdout, fmt, ap);
1438 fprintf (stdout, " %s: ", what);
1439 if ((s = strerror (eindex)))
1440 fprintf (stdout, "%s", s);
1442 fprintf (stdout, "Error %d", eindex);
1445 fputc ('\n', stdout);
1451 * Function for printing `debug' messages.
1455 debug_printf (char *fmt, ...)
1460 vfprintf (stderr, fmt, ap);
1466 * Check ndbm/db file(s) to see if the Message-Id of this
1467 * message matches the Message-Id of a previous message,
1468 * so we can discard it. If it doesn't match, we add the
1469 * Message-Id of this message to the ndbm/db file.
1472 suppress_duplicates (int fd, char *file)
1474 int fd1, lockfd, state, result;
1475 char *cp, buf[BUFSIZ], name[NAMESZ];
1480 if ((fd1 = dup (fd)) == -1)
1482 if (!(in = fdopen (fd1, "r"))) {
1488 for (state = FLD;;) {
1489 state = m_getfld (state, name, buf, sizeof(buf), in);
1494 /* Search for the message ID */
1495 if (mh_strcasecmp (name, "Message-ID")) {
1496 while (state == FLDPLUS)
1497 state = m_getfld (state, name, buf, sizeof(buf), in);
1501 cp = add (buf, NULL);
1502 while (state == FLDPLUS) {
1503 state = m_getfld (state, name, buf, sizeof(buf), in);
1506 key.dptr = trimcpy (cp);
1507 key.dsize = strlen (key.dptr) + 1;
1511 if (!(db = dbm_open (file, O_RDWR | O_CREAT, 0600))) {
1512 advise (file, "unable to perform dbm_open on");
1518 * Since it is difficult to portable lock a ndbm file,
1519 * we will open and lock the Maildelivery file instead.
1520 * This will fail if your Maildelivery file doesn't
1523 if ((lockfd = lkopen(file, O_RDWR, 0)) == -1) {
1524 advise (file, "unable to perform file locking on");
1529 value = dbm_fetch (db, key);
1532 verbose_printf ("Message-ID: %s\n already received on %s",
1536 value.dptr = ddate + sizeof("Delivery-Date:");
1537 value.dsize = strlen(value.dptr) + 1;
1538 if (dbm_store (db, key, value, DBM_INSERT))
1539 advise (file, "possibly corrupt file");
1544 lkclose(lockfd, file);