2 ** send.c -- send a composed message
4 ** This code is Copyright (c) 2002, by the authors of nmh. See the
5 ** COPYRIGHT file in the root directory of the nmh distribution for
6 ** complete copyright information.
13 #include <h/signals.h>
19 #ifdef TIME_WITH_SYS_TIME
20 # include <sys/time.h>
23 # ifdef TM_IN_SYS_TIME
24 # include <sys/time.h>
30 int debugsw = 0; /* global */
35 char *annotext = NULL;
36 char *distfile = NULL;
40 /* name of temp file for body content */
41 static char body_file_name[MAXPATHLEN + 1];
42 /* name of mhbuild composition temporary file */
43 static char composition_file_name[MAXPATHLEN + 1];
44 static int field_size; /* size of header field buffer */
45 static char *field; /* header field buffer */
46 static FILE *draft_file; /* draft file pointer */
47 static FILE *body_file; /* body file pointer */
48 static FILE *composition_file; /* composition file pointer */
53 static int sendsbr(char **, int, char *, struct stat *, int);
54 static void armed_done(int) NORETURN;
55 static void alert(char *, int);
56 static int tmp_fd(void);
57 static void anno(struct stat *);
58 static int sendaux(char **, int, char *, struct stat *);
59 static int attach(char *);
60 static void clean_up_temporary_files(void);
61 static int get_line(void);
62 static void make_mime_composition_file_entry(char *);
65 static struct swit switches[] = {
67 { "alias aliasfile", 0 },
95 main(int argc, char **argv)
97 int msgp = 0, nfiles = 0, distsw = 0, vecp = 1;
100 char *cp, *maildir = NULL;
101 char buf[BUFSIZ], **ap, **argp, **arguments;
102 char *msgs[MAXARGS], *vec[MAXARGS];
103 char *files[MAXARGS];
110 setlocale(LC_ALL, "");
112 invo_name = mhbasename(argv[0]);
114 /* read user profile/context */
117 arguments = getarguments(invo_name, argc, argv, 1);
120 vec[vecp++] = "-library";
121 vec[vecp++] = getcpy(toabsdir("+"));
123 while ((cp = *argp++)) {
125 switch (smatch(++cp, switches)) {
127 ambigsw(cp, switches);
130 adios(NULL, "-%s unknown\n", cp);
133 snprintf(buf, sizeof(buf),
134 "%s [file] [switches]",
136 print_help(buf, switches, 1);
139 print_version(invo_name);
166 debugsw++; /* fall */
174 if (!(cp = *argp++) || *cp == '-') {
175 adios(NULL, "missing argument to %s",
184 files[nfiles++] = cp;
191 /* check for "Aliasfile:" profile entry */
192 if ((cp = context_find("Aliasfile"))) {
195 for (ap=brkstring(dp=getcpy(cp), " ", "\n"); ap && *ap; ap++) {
196 vec[vecp++] = "-alias";
197 vec[vecp++] = getcpy(etcpath(*ap));
201 if (!msgp && !nfiles) {
202 msgs[msgp++] = seq_cur;
204 maildir = toabsdir(draftfolder);
206 if (chdir(maildir) == NOTOK) {
207 adios(maildir, "unable to change directory to");
210 if (!(mp = folder_read(draftfolder))) {
211 adios(NULL, "unable to read draft folder %s", draftfolder);
213 if (mp->nummsg == 0) {
214 adios(NULL, "no messages in draft folder %s", draftfolder);
216 /* parse all the message ranges/sequences and set SELECTED */
217 for (msgnum = 0; msgnum < msgp; msgnum++) {
218 if (!m_convert(mp, msgs[msgnum])) {
224 for (msgp = 0, msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
225 if (is_selected(mp, msgnum)) {
226 files[nfiles++] = getcpy(m_name(msgnum));
227 unset_exists(mp, msgnum);
231 mp->msgflags |= SEQMOD;
234 if (!(cp = getenv("SIGNATURE")) || !*cp) {
235 if ((cp = context_find("signature")) && *cp) {
236 m_putenv("SIGNATURE", cp);
240 for (msgnum = 0; msgnum < nfiles; msgnum++) {
241 if (stat(files[msgnum], &st) == NOTOK) {
242 adios(files[msgnum], "unable to stat draft file");
246 if (!(annotext = getenv("mhannotate")) || !*annotext) {
249 if (!(altmsg = getenv("mhaltmsg")) || !*altmsg) {
250 altmsg = NULL; /* used by dist interface - see below */
253 if ((cp = getenv("mhdist")) && *cp && (distsw = atoi(cp)) && altmsg) {
254 vec[vecp++] = "-dist";
255 distfile = getcpy(m_mktemp2(altmsg, invo_name, NULL, NULL));
256 if (link(altmsg, distfile) == NOTOK) {
257 if (errno != EXDEV) {
258 adios(distfile, "unable to link %s to",
262 distfile = getcpy(m_mktemp2(NULL, invo_name,
264 if ((in = open(altmsg, O_RDONLY)) == NOTOK) {
265 adios(altmsg, "unable to open");
268 if ((out = creat(distfile, (int)st2.st_mode & 0777)) ==
270 adios(distfile, "unable to write");
272 cpydata(in, out, altmsg, distfile);
280 if (!altmsg || stat(altmsg, &st) == NOTOK) {
289 vec[0] = mhbasename(postproc);
292 for (msgnum = 0; msgnum < nfiles; msgnum++) {
293 switch (sendsbr(vec, vecp, files[msgnum], &st, 1)) {
310 ** message sending back-end
313 sendsbr(char **vec, int vecp, char *drft, struct stat *st, int rename_drft)
317 char *original_draft;
318 char *p; /* string pointer for building file name */
321 ** Save the original name of the draft file. The name of the
322 ** draft file is changed to a temporary file containing the built
323 ** MIME message if there are attachments. We need the original
324 ** name so that it can be renamed after the message is sent.
326 original_draft = drft;
329 ** Convert the draft to a MIME message.
330 ** Use the mhbuild composition file for the draft if there was
331 ** a successful conversion because that now contains the MIME
332 ** message. A nice side effect of this is that it leaves the
333 ** original draft file untouched so that it can be retrieved
334 ** and modified if desired.
336 switch (attach(drft)) {
338 drft = composition_file_name;
349 switch (setjmp(env)) {
351 status = sendaux(vec, vecp, drft, st) ? NOTOK : OK;
352 /* rename the original draft */
353 if (rename_drft && status == OK &&
354 rename(original_draft, strncpy(buffer,
355 m_backup(original_draft), sizeof(buffer)))
357 advise(buffer, "unable to rename %s to", drft);
372 ** Get rid of any temporary files that we created for attachments.
373 ** Also get rid of the renamed composition file that mhbuild
374 ** leaves as a turd. It looks confusing, but we use the body
375 ** file name to help build the renamed composition file name.
377 if (drft == composition_file_name) {
378 clean_up_temporary_files();
380 if (strlen(composition_file_name) >=
381 sizeof (composition_file_name) - 6) {
382 advise(NULL, "unable to remove original composition file.");
384 if (!(p = strrchr(composition_file_name, '/'))) {
385 p = composition_file_name;
389 strcpy(body_file_name, p);
391 strcpy(p, body_file_name);
394 unlink(composition_file_name);
402 attach(char *draft_file_name)
404 char buf[MAXPATHLEN + 6];
408 int non_ascii; /* msg body contains non-ASCII chars */
409 int length; /* length of attachment header field name */
412 if (!(draft_file = fopen(draft_file_name, "r"))) {
413 adios(NULL, "can't open draft file `%s'.", draft_file_name);
416 /* We'll grow the buffer as needed. */
417 field = (char *)mh_xmalloc(field_size = 256);
420 ** Scan the draft file for an attachment header field name.
422 length = strlen(attach_hdr);
424 while (get_line() != EOF && *field != '\0' && *field != '-') {
425 if (strncasecmp(field, attach_hdr, length)==0 &&
426 field[length] == ':') {
432 ** Look for at least one non-blank line in the body of the
433 ** message which indicates content in the body.
434 ** Check if body contains at least one non-blank (= not empty)
435 ** and if it contains any non-ASCII chars (= need MIME).
439 while (get_line() != EOF) {
440 for (p = field; *p != '\0'; p++) {
441 if (*p != ' ' && *p != '\t') {
444 if (*p > 127 || *p < 0) {
448 if (has_body && non_ascii) {
449 break; /* that's been already enough information */
453 if (!has_attachment && non_ascii==0) {
454 /* We don't need to convert it to MIME. */
462 /* Make names for the temporary files. */
463 strncpy(body_file_name,
464 m_mktemp(toabsdir(invo_name), NULL, NULL),
465 sizeof (body_file_name));
466 strncpy(composition_file_name,
467 m_mktemp(toabsdir(invo_name), NULL, NULL),
468 sizeof (composition_file_name));
471 body_file = fopen(body_file_name, "w");
473 composition_file = fopen(composition_file_name, "w");
475 if ((has_body && !body_file) || !composition_file) {
476 clean_up_temporary_files();
477 adios(NULL, "unable to open all of the temporary files.");
480 /* Copy non-attachment header fields to the temp composition file. */
482 while (get_line() != EOF && *field && *field != '-') {
483 if (strncasecmp(field, attach_hdr, length) != 0 ||
484 field[length] != ':') {
485 fprintf(composition_file, "%s\n", field);
488 fputs("--------\n", composition_file);
491 /* Copy the message body to the temporary file. */
492 while ((c = getc(draft_file)) != EOF) {
497 /* Add a mhbuild MIME composition file line for the body */
498 /* charset will be discovered/guessed by buildmimeproc */
499 fprintf(composition_file, "#text/plain %s\n", body_file_name);
503 ** Now, go back to the beginning of the draft file and look for
504 ** header fields that specify attachments. Add a mhbuild MIME
505 ** composition file for each.
508 while (get_line() != EOF && *field && *field != '-') {
509 if (strncasecmp(field, attach_hdr, length) == 0 &&
510 field[length] == ':') {
511 for (p = field+length+1; *p==' ' || *p=='\t'; p++) {
515 /* forwarded message */
516 fprintf(composition_file, "#forw [forwarded message(s)] %s\n", p);
518 /* regular attachment */
519 make_mime_composition_file_entry(p);
523 fclose(composition_file);
526 ** We're ready to roll! Run mhbuild on the composition file.
527 ** Note that mhbuild is in the context as buildmimeproc.
529 sprintf(buf, "%s %s", buildmimeproc, composition_file_name);
531 if (system(buf) != 0) {
533 clean_up_temporary_files();
541 clean_up_temporary_files(void)
543 unlink(body_file_name);
544 unlink(composition_file_name);
552 int c; /* current character */
553 int n; /* number of bytes in buffer */
557 ** Get a line from the input file, growing the field buffer as
558 ** needed. We do this so that we can fit an entire line in the
559 ** buffer making it easy to do a string comparison on both the
560 ** field name and the field body which might be a long path name.
562 for (n = 0, p = field; (c = getc(draft_file)) != EOF; *p++ = c) {
563 if (c == '\n' && (c = getc(draft_file)) != ' ' && c != '\t') {
564 ungetc(c, draft_file);
568 if (++n >= field_size - 1) {
569 field = (char *)mh_xrealloc(field, field_size += 256);
579 make_mime_composition_file_entry(char *file_name)
584 char content_type[BUFSIZ];
586 char *cmd = mimetypequeryproc;
588 for (np = m_defs; np; np = np->n_next) {
589 if (strcasecmp(np->n_name, mimetypequery)==0) {
594 snprintf(cmdbuf, sizeof cmdbuf, "%s %s", cmd, file_name);
596 if (!(fp = popen(cmdbuf, "r"))) {
597 clean_up_temporary_files();
598 adios(NULL, "unable to determine content type with `%s'",
601 if (fgets(content_type, sizeof content_type, fp) &&
602 (cp = strrchr(content_type, '\n'))) {
605 strcpy(content_type, "application/octet-stream");
606 admonish(NULL, "problems with `%s', using fall back type `%s'",
607 cmdbuf, content_type);
611 /* TODO: don't use access(2) because it checks for ruid, not euid */
612 if (access(file_name, R_OK) != 0) {
613 clean_up_temporary_files();
614 adios(NULL, "unable to access file `%s'", file_name);
617 fprintf(composition_file, "#%s; name=\"%s\" <>{attachment}",
619 (!(cp = strrchr(file_name, '/'))) ? file_name : cp + 1);
621 fprintf(composition_file, " %s\n", file_name);
627 ** The back-end of the message sending back-end.
628 ** Annotate original message, and call `postproc' to send message.
631 sendaux(char **vec, int vecp, char *drft, struct stat *st)
638 ** fd collects the output of postproc, and is used for the
639 ** failure notice if we need to send one in alert().
641 fd = pushsw ? tmp_fd() : NOTOK;
644 if (distfile && distout(drft, distfile, backup) == NOTOK) {
649 for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++) {
654 /* oops -- fork error */
655 adios("fork", "unable to");
656 break; /* NOT REACHED */
660 ** child process -- send it
662 ** If fd is ok, then we are pushing and fd points to temp
663 ** file, so capture anything on stdout and stderr there.
666 dup2(fd, fileno(stdout));
667 dup2(fd, fileno(stderr));
670 execvp(postproc, vec);
671 fprintf(stderr, "unable to exec ");
674 break; /* NOT REACHED */
677 /* parent process -- wait for it */
678 if ((status = pidwait(child_id, NOTOK)) == OK) {
684 ** If postproc failed, and we have good fd (which
685 ** means we pushed), then mail error message
686 ** (and possibly the draft) back to the user.
692 advise(NULL, "message not delivered to anyone");
696 if (rename(backup, drft) == NOTOK) {
697 advise(drft, "unable to rename %s to",
710 ** Mail error notification (and possibly a copy of the
711 ** message) back to the user, using the mailproc
714 alert(char *file, int out)
720 for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++) {
726 /* oops -- fork error */
727 advise("fork", "unable to");
730 /* child process -- send it */
731 SIGNAL(SIGHUP, SIG_IGN);
732 SIGNAL(SIGINT, SIG_IGN);
733 SIGNAL(SIGQUIT, SIG_IGN);
734 SIGNAL(SIGTERM, SIG_IGN);
736 if ((in = open(file, O_RDONLY)) == NOTOK) {
737 admonish(file, "unable to re-open");
739 lseek(out, (off_t) 0, SEEK_END);
740 strncpy(buf, "\nMessage not delivered to anyone.\n", sizeof(buf));
741 write(out, buf, strlen(buf));
742 strncpy(buf, "\n------- Unsent Draft\n\n", sizeof(buf));
743 write(out, buf, strlen(buf));
744 cpydgst(in, out, file, "temporary file");
746 strncpy(buf, "\n------- End of Unsent Draft\n", sizeof(buf));
747 write(out, buf, strlen(buf));
748 if (rename(file, strncpy(buf, m_backup(file), sizeof(buf))) == NOTOK) {
749 admonish(buf, "unable to rename %s to", file);
753 lseek(out, (off_t) 0, SEEK_SET);
754 dup2(out, fileno(stdin));
756 /* create subject for error notification */
757 snprintf(buf, sizeof(buf), "send failed on %s",
758 forwsw ? "enclosed draft" : file);
760 execlp(mailproc, mhbasename(mailproc), getusername(),
761 "-subject", buf, NULL);
762 fprintf(stderr, "unable to exec ");
766 default: /* no waiting... */
778 tfile = m_mktemp2(NULL, invo_name, &fd, NULL);
779 if (tfile == NULL) return NOTOK;
783 advise(NULL, "temporary file %s selected", tfile);
785 if (unlink(tfile) == NOTOK) {
786 advise(tfile, "unable to remove");
795 anno(struct stat *st)
801 if (altmsg && (stat(altmsg, &st2) == NOTOK ||
802 st->st_mtime != st2.st_mtime ||
803 st->st_dev != st2.st_dev ||
804 st->st_ino != st2.st_ino)) {
806 admonish(NULL, "$mhaltmsg mismatch");
811 if (!(folder = getenv("mhfolder")) || !*folder) {
813 admonish(NULL, "$mhfolder not set");
817 if (!(msgs = getenv("mhmessages")) || !*msgs) {
819 admonish(NULL, "$mhmessages not set");
824 advise(NULL, "annotate as `%s': %s %s", annotext,
827 snprintf(buf, sizeof buf, "anno -comp '%s' '+%s' %s",
828 annotext, folder, msgs);
829 if (system(buf) != 0) {
830 advise(NULL, "unable to annotate");
836 armed_done(int status)
838 longjmp(env, status ? status : NOTOK);