3 * inc.c -- incorporate messages from a maildrop into a folder
9 /* Revised: Sat Apr 14 17:08:17 PDT 1990 (marvit@hplabs)
10 * Added hpux hacks to set and reset gid to be "mail" as needed. The reset
11 * is necessary so inc'ed mail is the group of the inc'er, rather than
12 * "mail". We setgid to egid only when [un]locking the mail file. This
13 * is also a major security precaution which will not be explained here.
15 * Fri Feb 7 16:04:57 PST 1992 John Romine <bug-mh@ics.uci.edu>
16 * NB: I'm not 100% sure that this setgid stuff is secure even now.
24 # include <h/dropsbr.h>
25 # include <h/popsbr.h>
32 #include <h/fmt_scan.h>
33 #include <h/scansbr.h>
34 #include <h/signals.h>
35 #include <zotnet/tws/tws.h>
36 #include <zotnet/mts/mts.h>
41 # define POPminc(a) (a)
47 # define RPOPminc(a) (a)
49 # define RPOPminc(a) 0
53 # define APOPminc(a) (a)
55 # define APOPminc(a) 0
59 # define KPOPminc(a) (a)
61 # define KPOPminc(a) 0
64 static struct swit switches[] = {
66 { "audit audit-file", 0 },
76 { "form formatfile", 0 },
78 { "format string", 5 },
80 { "host hostname", POPminc (-4) },
82 { "user username", POPminc (-4) },
84 { "pack file", POPminc (-4) },
86 { "nopack", POPminc (-6) },
88 { "apop", APOPminc (-4) },
90 { "noapop", APOPminc (-6) },
92 { "rpop", RPOPminc (-4) },
94 { "norpop", RPOPminc (-6) },
104 { "width columns", 0 },
112 { "kpop", KPOPminc (-4) },
119 * flags for the mail source
125 static int snoop = 0;
128 extern char response[];
130 static char *packfile = NULL;
136 static int mbx_style = MMDF_FORMAT;
137 static int pd = NOTOK;
138 static FILE *pf = NULL;
143 * For setting and returning to "mail" gid
146 static int return_gid;
152 char *map_name(char *);
156 static int pop_action(char *);
157 static int pop_pack(char *);
158 static int map_count(void);
163 main (int argc, char **argv)
165 int chgflag = 1, trnflag = 1;
166 int noisy = 1, width = 0, locked = 0;
167 int rpop, i, hghnum, msgnum;
169 char *cp, *maildir, *folder = NULL;
170 char *format = NULL, *form = NULL;
171 char *newmail, *host = NULL, *user = NULL;
172 char *audfile = NULL, *from = NULL;
173 char buf[BUFSIZ], **argp, *nfs, **arguments;
176 FILE *in, *aud = NULL;
179 int nmsgs, nbytes, p = 0;
188 struct hes_postoffice *po;
193 setlocale(LC_ALL, "");
195 invo_name = r1bindex (argv[0], '/');
197 /* read user profile/context */
200 mts_init (invo_name);
201 arguments = getarguments (invo_name, argc, argv, 1);
208 * use MAILHOST environment variable if present,
210 * If that fails, use the default (if any)
211 * provided by mts.conf in mts_init()
213 if ((tmphost = getenv("MAILHOST")) != NULL)
215 else if ((po = hes_getmailhost(getusername())) != NULL &&
216 strcmp(po->po_type, "POP") == 0)
217 pophost = po->po_host;
220 * If there is a valid "pophost" entry in mts.conf,
221 * then use it as the default host.
223 if (pophost && *pophost)
226 if ((cp = getenv ("MHPOPDEBUG")) && *cp)
232 while ((cp = *argp++)) {
234 switch (smatch (++cp, switches)) {
236 ambigsw (cp, switches);
239 adios (NULL, "-%s unknown", cp);
242 snprintf (buf, sizeof(buf), "%s [+folder] [switches]", invo_name);
243 print_help (buf, switches, 1);
246 print_version(invo_name);
250 if (!(cp = *argp++) || *cp == '-')
251 adios (NULL, "missing argument to %s", argp[-2]);
252 audfile = getcpy (m_maildir (cp));
266 * The flag `trnflag' has the value:
268 * 2 if -truncate is given
269 * 1 by default (truncating is default)
270 * 0 if -notruncate is given
280 if (!(cp = *argp++) || *cp == '-')
281 adios (NULL, "missing argument to %s", argp[-2]);
282 from = path (cp, TFILE);
285 * If the truncate file is in default state,
286 * change to not truncate.
300 if (!(form = *argp++) || *form == '-')
301 adios (NULL, "missing argument to %s", argp[-2]);
305 if (!(format = *argp++) || *format == '-')
306 adios (NULL, "missing argument to %s", argp[-2]);
311 if (!(cp = *argp++) || *cp == '-')
312 adios (NULL, "missing argument to %s", argp[-2]);
317 if (!(host = *argp++) || *host == '-')
318 adios (NULL, "missing argument to %s", argp[-2]);
321 if (!(user = *argp++) || *user == '-')
322 adios (NULL, "missing argument to %s", argp[-2]);
327 if (!(cp = *argp++) || *cp == '-')
328 adios (NULL, "missing argument to %s", argp[-2]);
330 if (!(packfile = *argp++) || *packfile == '-')
331 adios (NULL, "missing argument to %s", argp[-2]);
363 if (*cp == '+' || *cp == '@') {
365 adios (NULL, "only one folder at a time!");
367 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
369 adios (NULL, "usage: %s [+folder] [switches]", invo_name);
374 return_gid = getegid(); /* Save effective gid, assuming we'll use it */
375 setgid(getgid()); /* Turn off extraordinary privileges */
376 #endif /* MAILGROUP */
381 if (from || !host || rpop <= 0)
386 * Where are we getting the new mail?
399 * Are we getting the mail from
402 if (inc_type == INC_POP) {
404 user = getusername ();
405 if ( strcmp( POPSERVICE, "kpop" ) == 0 ) {
408 if (kpop || ( rpop > 0))
409 pass = getusername ();
411 ruserpass (host, &user, &pass);
414 * initialize POP connection
416 if (pop_init (host, user, pass, snoop, kpop ? 1 : rpop, kpop) == NOTOK)
417 adios (NULL, "%s", response);
419 /* Check if there are any messages */
420 if (pop_stat (&nmsgs, &nbytes) == NOTOK)
421 adios (NULL, "%s", response);
427 adios (NULL, "no mail to incorporate");
433 * We will get the mail from a file
434 * (typically the standard maildrop)
437 if (inc_type == INC_FILE) {
440 else if ((newmail = getenv ("MAILDROP")) && *newmail)
441 newmail = m_mailpath (newmail);
442 else if ((newmail = context_find ("maildrop")) && *newmail)
443 newmail = m_mailpath (newmail);
445 newmail = concat (MAILDIR, "/", MAILFIL, NULL);
447 if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
448 adios (NULL, "no mail to incorporate");
452 /* skip the folder setup */
453 if ((inc_type == INC_POP) && packfile)
457 if (!context_find ("path"))
458 free (path ("./", TFOLDER));
460 folder = getfolder (0);
461 maildir = m_maildir (folder);
463 if (stat (maildir, &st) == NOTOK) {
465 adios (maildir, "error on folder");
466 cp = concat ("Create folder \"", maildir, "\"? ", NULL);
467 if (noisy && !getanswer (cp))
470 if (!makedir (maildir))
471 adios (NULL, "unable to create folder %s", maildir);
474 if (chdir (maildir) == NOTOK)
475 adios (maildir, "unable to change directory to");
477 /* read folder and create message structure */
478 if (!(mp = folder_read (folder)))
479 adios (NULL, "unable to read folder %s", folder);
485 if (inc_type == INC_FILE) {
486 if (access (newmail, W_OK) != NOTOK) {
489 SIGNAL (SIGHUP, SIG_IGN);
490 SIGNAL (SIGINT, SIG_IGN);
491 SIGNAL (SIGQUIT, SIG_IGN);
492 SIGNAL (SIGTERM, SIG_IGN);
496 setgid(return_gid); /* Reset gid to lock mail file */
497 #endif /* MAILGROUP */
499 /* lock and fopen the mail spool */
500 if ((in = lkfopen (newmail, "r")) == NULL)
501 adios (NULL, "unable to lock and fopen %s", newmail);
504 setgid(getgid()); /* Return us to normal privileges */
505 #endif /* MAILGROUP */
506 fstat (fileno(in), &s1);
509 if ((in = fopen (newmail, "r")) == NULL)
510 adios (newmail, "unable to read");
515 setgid(getgid()); /* Return us to normal privileges */
516 #endif /* MAILGROUP */
519 if ((i = stat (audfile, &st)) == NOTOK)
520 advise (NULL, "Creating Receive-Audit: %s", audfile);
521 if ((aud = fopen (audfile, "a")) == NULL)
522 adios (audfile, "unable to append to");
524 chmod (audfile, m_gmprot ());
527 fprintf (aud, from ? "<<inc>> %s -ms %s\n"
528 : host ? "<<inc>> %s -host %s -user %s%s\n"
530 dtimenow (0), from ? from : host, user,
531 rpop < 0 ? " -apop" : rpop > 0 ? " -rpop" : "");
533 fprintf (aud, from ? "<<inc>> %s -ms %s\n" : "<<inc>> %s\n",
539 if (context_find ("mhe")) {
540 cp = concat (maildir, "/++", NULL);
542 if ((mhe = fopen (cp, "a")) == NULL)
543 admonish (cp, "unable to append to");
546 chmod (cp, m_gmprot ());
551 /* Get new format string */
552 nfs = new_fs (form, format, FORMAT);
555 printf ("Incorporating new mail into %s...\n\n", folder);
561 * Get the mail from a POP server
563 if (inc_type == INC_POP) {
565 packfile = path (packfile, TFILE);
566 if (stat (packfile, &st) == NOTOK) {
568 adios (packfile, "error on file");
569 cp = concat ("Create file \"", packfile, "\"? ", NULL);
570 if (noisy && !getanswer (cp))
574 msgnum = map_count ();
575 if ((pd = mbx_open (packfile, mbx_style, getuid(), getgid(), m_gmprot()))
577 adios (packfile, "unable to open");
578 if ((pf = fdopen (pd, "w+")) == NULL)
579 adios (NULL, "unable to fdopen %s", packfile);
581 hghnum = msgnum = mp->hghmsg;
583 * Check if we have enough message space for all the new
584 * messages. If not, then realloc the folder and add enough
585 * space for all new messages plus 10 additional slots.
587 if (mp->hghmsg + nmsgs >= mp->hghoff
588 && !(mp = folder_realloc (mp, mp->lowoff, mp->hghmsg + nmsgs + 10)))
589 adios (NULL, "unable to allocate folder storage");
592 for (i = 1; i <= nmsgs; i++) {
595 fseek (pf, 0L, SEEK_CUR);
598 fwrite (mmdlm1, 1, strlen (mmdlm1), pf);
601 if (pop_retr (i, pop_pack) == NOTOK)
602 adios (NULL, "%s", response);
604 fseek (pf, 0L, SEEK_CUR);
607 adios (packfile, "write error on");
608 fseek (pf, start, SEEK_SET);
610 cp = getcpy (m_name (msgnum));
611 if ((pf = fopen (cp, "w+")) == NULL)
612 adios (cp, "unable to write");
613 chmod (cp, m_gmprot ());
616 if (pop_retr (i, pop_action) == NOTOK)
617 adios (NULL, "%s", response);
620 adios (cp, "write error on");
621 fseek (pf, 0L, SEEK_SET);
623 switch (p = scan (pf, msgnum, 0, nfs, width,
624 packfile ? 0 : msgnum == mp->hghmsg + 1 && chgflag,
625 1, NULL, stop - start, noisy)) {
627 printf ("%*d empty\n", DMAXFOLDER, msgnum);
633 /* advise (cp, "unable to read"); already advised */
652 clear_msg_flags (mp, msgnum);
653 set_exists (mp, msgnum);
654 set_unseen (mp, msgnum);
655 mp->msgflags |= SEQMOD;
660 fseek (pf, stop, SEEK_SET);
661 fwrite (mmdlm2, 1, strlen (mmdlm2), pf);
662 if (fflush (pf) || ferror (pf)) {
666 adios (packfile, "write error on");
668 map_write (packfile, pd, 0, 0L, start, stop, pos, size, noisy);
670 if (ferror(pf) || fclose (pf)) {
675 adios (cp, "write error on");
680 if (trnflag && pop_dele (i) == NOTOK)
681 adios (NULL, "%s", response);
684 if (pop_quit () == NOTOK)
685 adios (NULL, "%s", response);
687 mbx_close (packfile, pd);
694 * Get the mail from file (usually mail spool)
696 if (inc_type == INC_FILE) {
697 m_unknown (in); /* the MAGIC invocation... */
698 hghnum = msgnum = mp->hghmsg;
701 * Check if we need to allocate more space for message status.
702 * If so, then add space for an additional 100 messages.
704 if (msgnum >= mp->hghoff
705 && !(mp = folder_realloc (mp, mp->lowoff, mp->hghoff + 100))) {
706 advise (NULL, "unable to allocate folder storage");
712 /* copy file from spool to tmp file */
713 tmpfilenam = m_scratch ("", invo_name);
714 if ((fd = creat (tmpfilenam, m_gmprot ())) == NOTOK)
715 adios (tmpfilenam, "unable to create");
716 chmod (tmpfilenam, m_gmprot ());
717 if (!(in2 = fdopen (fd, "r+")))
718 adios (tmpfilenam, "unable to access");
721 /* link message into folder */
722 newmsg = folder_addmsg(mp, tmpfilenam);
725 /* create scanline for new message */
726 switch (i = scan (in, msgnum + 1, msgnum + 1, nfs, width,
727 msgnum == hghnum && chgflag, 1, NULL, 0L, noisy)) {
734 fputs ("inc aborted!\n", aud);
735 advise (NULL, "aborted!"); /* doesn't clean up locks! */
739 advise (NULL, "BUG in %s, number out of range", invo_name);
743 advise (NULL, "BUG in %s, scan() botch (%d)", invo_name, i);
759 clear_msg_flags (mp, msgnum);
760 set_exists (mp, msgnum);
761 set_unseen (mp, msgnum);
762 mp->msgflags |= SEQMOD;
770 if (p < 0) { /* error */
772 if (i < 0) { /* error */
776 /* Be sure we can unlock mail file */
778 #endif /* MAILGROUP */
780 lkfclose (in, newmail);
783 /* And then return us to normal privileges */
785 #endif /* MAILGROUP */
789 adios (NULL, "failed");
804 if ((inc_type == INC_POP) && packfile)
809 * truncate file we are incorporating from
811 if (inc_type == INC_FILE) {
813 if (stat (newmail, &st) != NOTOK && s1.st_mtime != st.st_mtime)
814 advise (NULL, "new messages have arrived!\007");
816 if ((i = creat (newmail, 0600)) != NOTOK)
819 admonish (newmail, "error zero'ing");
820 unlink(map_name(newmail));
824 printf ("%s not zero'd\n", newmail);
828 if (msgnum == hghnum) {
829 admonish (NULL, "no messages incorporated");
831 context_replace (pfolder, folder); /* update current folder */
833 mp->curmsg = hghnum + 1;
837 if (chgflag) /* sigh... */
838 seq_setcur (mp, mp->curmsg);
842 * unlock the mail spool
844 if (inc_type == INC_FILE) {
847 setgid(return_gid); /* Be sure we can unlock mail file */
848 #endif /* MAILGROUP */
850 lkfclose (in, newmail);
853 setgid(getgid()); /* And then return us to normal privileges */
854 #endif /* MAILGROUP */
860 seq_setunseen (mp, 0); /* set the Unseen-Sequence */
861 seq_save (mp); /* synchronize sequences */
862 context_save (); /* save the context file */
870 * Copy message message from spool into
871 * temporary file. Massage the "From " line
875 cpymsg (FILE *in, FILE *out)
878 char *tmpbuf, name[NAMESZ];
881 state = m_getfld (state, name, tmpbuf, rlwidth, in);
904 if (packfile && pd != NOTOK)
905 mbx_close (packfile, pd);
908 return 1; /* dead code to satisfy the compiler */
914 fprintf (pf, "%s\n", s);
915 stop += strlen (s) + 1;
916 return 0; /* Is return value used? This was missing before 1999-07-15. */
925 snprintf (buffer, sizeof(buffer), "%s\n", s);
926 for (j = 0; (j = stringdex (mmdlm1, buffer)) >= 0; buffer[j]++)
928 for (j = 0; (j = stringdex (mmdlm2, buffer)) >= 0; buffer[j]++)
931 size += strlen (buffer) + 1;
932 return 0; /* Is return value used? This was missing before 1999-07-15. */
943 if (stat (packfile, &st) == NOTOK)
945 if ((md = open (cp = map_name (packfile), O_RDONLY)) == NOTOK
946 || map_chk (cp, md, &d, (long) st.st_size, 1)) {