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29 * @(#)collect.c 8.2 (Berkeley) 4/19/94
30 * $FreeBSD: src/usr.bin/mail/collect.c,v 1.4.6.3 2003/01/06 05:46:03 mikeh Exp $
31 * $DragonFly: src/usr.bin/mail/collect.c,v 1.4 2004/09/08 03:01:11 joerg Exp $
35 * Mail -- a mail program
37 * Collect input from standard input, handling
46 * Read a message from standard output and return a read file to it
51 * The following hokiness with global variables is so that on
52 * receipt of an interrupt signal, the partial message can be salted
53 * away on dead.letter.
56 static sig_t saveint; /* Previous SIGINT value */
57 static sig_t savehup; /* Previous SIGHUP value */
58 static sig_t savetstp; /* Previous SIGTSTP value */
59 static sig_t savettou; /* Previous SIGTTOU value */
60 static sig_t savettin; /* Previous SIGTTIN value */
61 static FILE *collf; /* File for saving away */
62 static int hadintr; /* Have seen one SIGINT so far */
64 static jmp_buf colljmp; /* To get back to work */
65 static int colljmp_p; /* whether to long jump */
66 static jmp_buf collabort; /* To end collection with error */
69 collect(struct header *hp, int printheaders)
72 int lc, cc, escape, eofcount, fd, c, t;
73 char linebuf[LINESIZE], tempname[PATHSIZE], *cp, getsub;
75 int longline, lastlong, rc; /* So we don't make 2 or more lines
76 out of a long input line. */
80 * Start catching signals from here, but we're still die on interrupts
81 * until we're in the main loop.
84 sigaddset(&nset, SIGINT);
85 sigaddset(&nset, SIGHUP);
86 sigprocmask(SIG_BLOCK, &nset, NULL);
87 if ((saveint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
88 signal(SIGINT, collint);
89 if ((savehup = signal(SIGHUP, SIG_IGN)) != SIG_IGN)
90 signal(SIGHUP, collhup);
91 savetstp = signal(SIGTSTP, collstop);
92 savettou = signal(SIGTTOU, collstop);
93 savettin = signal(SIGTTIN, collstop);
94 if (setjmp(collabort) || setjmp(colljmp)) {
98 sigprocmask(SIG_UNBLOCK, &nset, NULL);
101 snprintf(tempname, sizeof(tempname), "%s/mail.RsXXXXXXXXXX", tmpdir);
102 if ((fd = mkstemp(tempname)) == -1 ||
103 (collf = Fdopen(fd, "w+")) == NULL) {
104 warn("%s", tempname);
110 * If we are going to prompt for a subject,
111 * refrain from printing a newline after
112 * the headers (since some people mind).
114 t = GTO|GSUBJECT|GCC|GNL;
116 if (hp->h_subject == NULL && value("interactive") != NULL &&
117 (value("ask") != NULL || value("asksub") != NULL))
120 puthead(hp, stdout, t);
123 if ((cp = value("escape")) != NULL)
132 if (!setjmp(colljmp)) {
137 * Come here for printing the after-signal message.
138 * Duplicate messages won't be printed because
139 * the write is aborted if we get a SIGTTOU.
145 "\n(Interrupt -- one more to kill letter)\n");
147 printf("(continue)\n");
153 c = readline(stdin, linebuf, LINESIZE);
156 if (value("interactive") != NULL &&
157 value("ignoreeof") != NULL && ++eofcount < 25) {
158 printf("Use \".\" to terminate letter\n");
164 longline = c == LINESIZE - 1;
167 if (linebuf[0] == '.' && linebuf[1] == '\0' &&
168 value("interactive") != NULL && !lastlong &&
169 (value("dot") != NULL || value("ignoreeof") != NULL))
171 if (linebuf[0] != escape || value("interactive") == NULL ||
173 if (putline(collf, linebuf, !longline) < 0)
181 * On double escape, just send the single one.
182 * Otherwise, it's an error.
185 if (putline(collf, &linebuf[1], !longline) < 0)
190 printf("Unknown tilde escape.\n");
200 * Shell escape, send the balance of the
208 * Escape to command mode, but be nice!
210 execute(&linebuf[2], 1);
214 * Simulate end of file on input.
219 * Force a quit of sending mail.
220 * Act like an interrupt happened.
227 * Exit, do not save in dead.letter.
232 * Grab a bunch of headers.
234 grabh(hp, GTO|GSUBJECT|GCC|GBCC);
238 * Add to the To list.
240 hp->h_to = cat(hp->h_to, extract(&linebuf[2], GTO));
244 * Set the Subject line.
247 while (isspace((unsigned char)*cp))
249 hp->h_subject = savestr(cp);
253 * Set the Reply-To line.
256 while (isspace((unsigned char)*cp))
258 hp->h_replyto = savestr(cp);
262 * Add to the CC list.
264 hp->h_cc = cat(hp->h_cc, extract(&linebuf[2], GCC));
268 * Add to the BCC list.
270 hp->h_bcc = cat(hp->h_bcc, extract(&linebuf[2], GBCC));
276 * Insert named variable in message.
281 while(isspace((unsigned char)*cp))
294 if(*cp != '\0' && (cp = value(cp)) != NULL) {
296 if(putline(collf, cp, 1) < 0)
303 * Read in the dead letter file.
305 if (strlcpy(linebuf + 2, getdeadletter(),
307 >= sizeof(linebuf) - 2) {
308 printf("Line buffer overflow\n");
316 * Search for the file name,
317 * then open it and copy the contents to collf.
320 while (isspace((unsigned char)*cp))
323 printf("Interpolate what file?\n");
331 * Insert stdout of command.
334 int nullfd, tempfd, rc;
335 char tempname2[PATHSIZE];
337 if ((nullfd = open("/dev/null", O_RDONLY, 0))
343 snprintf(tempname2, sizeof(tempname2),
344 "%s/mail.ReXXXXXXXXXX", tmpdir);
345 if ((tempfd = mkstemp(tempname2)) == -1 ||
346 (fbuf = Fdopen(tempfd, "w+")) == NULL) {
347 warn("%s", tempname2);
352 if ((sh = value("SHELL")) == NULL)
355 rc = run_command(sh, 0, nullfd, fileno(fbuf),
365 if (fsize(fbuf) == 0) {
367 "No bytes from command \"%s\"\n",
374 } else if (isdir(cp)) {
375 printf("%s: Directory\n", cp);
377 } else if ((fbuf = Fopen(cp, "r")) == NULL) {
381 printf("\"%s\" ", cp);
385 while ((rc = readline(fbuf, linebuf, LINESIZE)) >= 0) {
386 if (rc != LINESIZE - 1)
388 if ((t = putline(collf, linebuf,
389 rc != LINESIZE - 1)) < 0) {
396 printf("%d/%d\n", lc, cc);
400 * Write the message on a file.
403 while (*cp == ' ' || *cp == '\t')
406 fprintf(stderr, "Write what file!?\n");
409 if ((cp = expand(cp)) == NULL)
412 exwrite(cp, collf, 1);
419 * Interpolate the named messages, if we
420 * are in receiving mail mode. Does the
421 * standard list processing garbage.
422 * If ~f is given, we don't shift over.
424 if (forward(linebuf + 2, collf, tempname, c) < 0)
428 if ((fbuf = Fopen(_PATH_TILDE, "r")) == NULL) {
429 warn("%s", _PATH_TILDE);
432 while ((t = getc(fbuf)) != EOF)
438 * Print out the current state of the
439 * message without altering anything.
442 printf("-------\nMessage contains:\n");
443 puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
444 while ((t = getc(collf)) != EOF)
449 * Pipe message through command.
450 * Collect output as new message.
453 mespipe(collf, &linebuf[2]);
458 * Edit the current message.
459 * 'e' means to use EDITOR
460 * 'v' means to use VISUAL
477 sigprocmask(SIG_BLOCK, &nset, NULL);
478 signal(SIGINT, saveint);
479 signal(SIGHUP, savehup);
480 signal(SIGTSTP, savetstp);
481 signal(SIGTTOU, savettou);
482 signal(SIGTTIN, savettin);
483 sigprocmask(SIG_UNBLOCK, &nset, NULL);
488 * Write a file, ex-like if f set.
491 exwrite(char *name, FILE *fp, int f)
499 printf("\"%s\" ", name);
502 if (stat(name, &junk) >= 0 && S_ISREG(junk.st_mode)) {
504 fprintf(stderr, "%s: ", name);
505 fprintf(stderr, "File exists\n");
508 if ((of = Fopen(name, "w")) == NULL) {
514 while ((c = getc(fp)) != EOF) {
526 printf("%d/%ld\n", lc, cc);
532 * Edit the message being collected on fp.
533 * On return, make the edit file the new temp file.
536 mesedit(FILE *fp, int c)
538 sig_t sigint = signal(SIGINT, SIG_IGN);
539 FILE *nf = run_editor(fp, (off_t)-1, c, 0);
542 fseeko(nf, (off_t)0, SEEK_END);
546 signal(SIGINT, sigint);
550 * Pipe the message through the command.
551 * Old message is on stdin of command;
552 * New message collected from stdout.
553 * Sh -c must return 0 to accept the new message.
556 mespipe(FILE *fp, char *cmd)
560 sig_t sigint = signal(SIGINT, SIG_IGN);
561 char *sh, tempname[PATHSIZE];
563 snprintf(tempname, sizeof(tempname), "%s/mail.ReXXXXXXXXXX", tmpdir);
564 if ((fd = mkstemp(tempname)) == -1 ||
565 (nf = Fdopen(fd, "w+")) == NULL) {
566 warn("%s", tempname);
571 * stdin = current message.
572 * stdout = new message.
574 if ((sh = value("SHELL")) == NULL)
576 if (run_command(sh, 0, fileno(fp), fileno(nf), "-c", cmd, NULL) < 0) {
580 if (fsize(nf) == 0) {
581 fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
588 fseeko(nf, (off_t)0, SEEK_END);
592 signal(SIGINT, sigint);
596 * Interpolate the named messages into the current
597 * message, preceding each line with a tab.
598 * Return a count of the number of characters now in
599 * the message, or -1 if an error is encountered writing
600 * the message temporary. The flag argument is 'm' if we
601 * should shift over and 'f' if not.
604 forward(char *ms, FILE *fp, char *fn, int f)
607 struct ignoretab *ig;
610 msgvec = (int *)salloc((msgCount+1) * sizeof(*msgvec));
613 if (getmsglist(ms, msgvec, 0) < 0)
616 *msgvec = first(0, MMNORM);
618 printf("No appropriate messages\n");
623 if (f == 'f' || f == 'F')
625 else if ((tabst = value("indentprefix")) == NULL)
627 ig = isupper((unsigned char)f) ? NULL : ignore;
628 printf("Interpolating:");
629 for (; *msgvec != 0; msgvec++) {
630 struct message *mp = message + *msgvec - 1;
633 printf(" %d", *msgvec);
634 if (sendmessage(mp, fp, ig, tabst) < 0) {
644 * Print (continue) when continued after ^Z.
650 sig_t old_action = signal(s, SIG_DFL);
655 sigprocmask(SIG_UNBLOCK, &nset, NULL);
657 sigprocmask(SIG_BLOCK, &nset, NULL);
658 signal(s, old_action);
667 * On interrupt, come here to save the partial message in ~/dead.letter.
668 * Then jump out of the collection loop.
675 * the control flow is subtle, because we can be called from ~q.
678 if (value("ignore") != NULL) {
688 if (value("nosave") == NULL)
689 savedeadletter(collf);
690 longjmp(collabort, 1);
698 savedeadletter(collf);
700 * Let's pretend nobody else wants to clean up,
701 * a true statement at this time.
707 savedeadletter(FILE *fp)
715 cp = getdeadletter();
717 dbuf = Fopen(cp, "a");
721 while ((c = getc(fp)) != EOF)