2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static char sccsid[] = "@(#)collect.c 8.2 (Berkeley) 4/19/94";
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * Mail -- a mail program
41 * Collect input from standard input, handling
50 * Read a message from standard output and return a read file to it
55 * The following hokiness with global variables is so that on
56 * receipt of an interrupt signal, the partial message can be salted
57 * away on dead.letter.
60 static sig_t saveint; /* Previous SIGINT value */
61 static sig_t savehup; /* Previous SIGHUP value */
62 static sig_t savetstp; /* Previous SIGTSTP value */
63 static sig_t savettou; /* Previous SIGTTOU value */
64 static sig_t savettin; /* Previous SIGTTIN value */
65 static FILE *collf; /* File for saving away */
66 static int hadintr; /* Have seen one SIGINT so far */
68 static jmp_buf colljmp; /* To get back to work */
69 static int colljmp_p; /* whether to long jump */
70 static jmp_buf collabort; /* To end collection with error */
73 collect(struct header *hp, int printheaders)
76 int lc, cc, escape, eofcount, fd, c, t;
77 char linebuf[LINESIZE], tempname[PATHSIZE], *cp, getsub;
79 int longline, lastlong, rc; /* So we don't make 2 or more lines
80 out of a long input line. */
84 * Start catching signals from here, but we're still die on interrupts
85 * until we're in the main loop.
87 (void)sigemptyset(&nset);
88 (void)sigaddset(&nset, SIGINT);
89 (void)sigaddset(&nset, SIGHUP);
90 (void)sigprocmask(SIG_BLOCK, &nset, NULL);
91 if ((saveint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
92 (void)signal(SIGINT, collint);
93 if ((savehup = signal(SIGHUP, SIG_IGN)) != SIG_IGN)
94 (void)signal(SIGHUP, collhup);
95 savetstp = signal(SIGTSTP, collstop);
96 savettou = signal(SIGTTOU, collstop);
97 savettin = signal(SIGTTIN, collstop);
98 if (setjmp(collabort) || setjmp(colljmp)) {
102 (void)sigprocmask(SIG_UNBLOCK, &nset, NULL);
105 (void)snprintf(tempname, sizeof(tempname),
106 "%s/mail.RsXXXXXXXXXX", tmpdir);
107 if ((fd = mkstemp(tempname)) == -1 ||
108 (collf = Fdopen(fd, "w+")) == NULL) {
109 warn("%s", tempname);
115 * If we are going to prompt for a subject,
116 * refrain from printing a newline after
117 * the headers (since some people mind).
119 t = GTO|GSUBJECT|GCC|GNL;
121 if (hp->h_subject == NULL && value("interactive") != NULL &&
122 (value("ask") != NULL || value("asksub") != NULL))
125 puthead(hp, stdout, t);
126 (void)fflush(stdout);
128 if ((cp = value("escape")) != NULL)
136 if (!setjmp(colljmp)) {
141 * Come here for printing the after-signal message.
142 * Duplicate messages won't be printed because
143 * the write is aborted if we get a SIGTTOU.
147 (void)fflush(stdout);
149 "\n(Interrupt -- one more to kill letter)\n");
151 printf("(continue)\n");
152 (void)fflush(stdout);
157 c = readline(stdin, linebuf, LINESIZE);
160 if (value("interactive") != NULL &&
161 value("ignoreeof") != NULL && ++eofcount < 25) {
162 printf("Use \".\" to terminate letter\n");
168 longline = c == LINESIZE - 1;
171 if (linebuf[0] == '.' && linebuf[1] == '\0' &&
172 value("interactive") != NULL && !lastlong &&
173 (value("dot") != NULL || value("ignoreeof") != NULL))
175 if (linebuf[0] != escape || value("interactive") == NULL ||
177 if (putline(collf, linebuf, !longline) < 0)
185 * On double escape, just send the single one.
186 * Otherwise, it's an error.
189 if (putline(collf, &linebuf[1], !longline) < 0)
194 printf("Unknown tilde escape.\n");
204 * Shell escape, send the balance of the
212 * Escape to command mode, but be nice!
214 execute(&linebuf[2], 1);
218 * Simulate end of file on input.
223 * Force a quit of sending mail.
224 * Act like an interrupt happened.
231 * Exit, do not save in dead.letter.
236 * Grab a bunch of headers.
238 grabh(hp, GTO|GSUBJECT|GCC|GBCC);
242 * Add to the To list.
244 hp->h_to = cat(hp->h_to, extract(&linebuf[2], GTO));
248 * Set the Subject line.
251 while (isspace((unsigned char)*cp))
253 hp->h_subject = savestr(cp);
257 * Set the Reply-To line.
260 while (isspace((unsigned char)*cp))
262 hp->h_replyto = savestr(cp);
266 * Add to the CC list.
268 hp->h_cc = cat(hp->h_cc, extract(&linebuf[2], GCC));
272 * Add to the BCC list.
274 hp->h_bcc = cat(hp->h_bcc, extract(&linebuf[2], GBCC));
280 * Insert named variable in message.
285 while(isspace((unsigned char)*cp))
298 if(*cp != '\0' && (cp = value(cp)) != NULL) {
300 if(putline(collf, cp, 1) < 0)
307 * Read in the dead letter file.
309 if (strlcpy(linebuf + 2, getdeadletter(),
311 >= sizeof(linebuf) - 2) {
312 printf("Line buffer overflow\n");
320 * Search for the file name,
321 * then open it and copy the contents to collf.
324 while (isspace((unsigned char)*cp))
327 printf("Interpolate what file?\n");
335 * Insert stdout of command.
338 int nullfd, tempfd, rc;
339 char tempname2[PATHSIZE];
341 if ((nullfd = open(_PATH_DEVNULL, O_RDONLY, 0))
347 (void)snprintf(tempname2, sizeof(tempname2),
348 "%s/mail.ReXXXXXXXXXX", tmpdir);
349 if ((tempfd = mkstemp(tempname2)) == -1 ||
350 (fbuf = Fdopen(tempfd, "w+")) == NULL) {
351 warn("%s", tempname2);
354 (void)unlink(tempname2);
356 if ((sh = value("SHELL")) == NULL)
359 rc = run_command(sh, 0, nullfd, fileno(fbuf),
369 if (fsize(fbuf) == 0) {
371 "No bytes from command \"%s\"\n",
378 } else if (isdir(cp)) {
379 printf("%s: Directory\n", cp);
381 } else if ((fbuf = Fopen(cp, "r")) == NULL) {
385 printf("\"%s\" ", cp);
386 (void)fflush(stdout);
389 while ((rc = readline(fbuf, linebuf, LINESIZE)) >= 0) {
390 if (rc != LINESIZE - 1)
392 if ((t = putline(collf, linebuf,
393 rc != LINESIZE - 1)) < 0) {
400 printf("%d/%d\n", lc, cc);
404 * Write the message on a file.
407 while (*cp == ' ' || *cp == '\t')
410 fprintf(stderr, "Write what file!?\n");
413 if ((cp = expand(cp)) == NULL)
416 exwrite(cp, collf, 1);
423 * Interpolate the named messages, if we
424 * are in receiving mail mode. Does the
425 * standard list processing garbage.
426 * If ~f is given, we don't shift over.
428 if (forward(linebuf + 2, collf, tempname, c) < 0)
432 if ((fbuf = Fopen(_PATH_TILDE, "r")) == NULL) {
433 warn("%s", _PATH_TILDE);
436 while ((t = getc(fbuf)) != EOF)
442 * Print out the current state of the
443 * message without altering anything.
446 printf("-------\nMessage contains:\n");
447 puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
448 while ((t = getc(collf)) != EOF)
453 * Pipe message through command.
454 * Collect output as new message.
457 mespipe(collf, &linebuf[2]);
462 * Edit the current message.
463 * 'e' means to use EDITOR
464 * 'v' means to use VISUAL
481 (void)sigprocmask(SIG_BLOCK, &nset, NULL);
482 (void)signal(SIGINT, saveint);
483 (void)signal(SIGHUP, savehup);
484 (void)signal(SIGTSTP, savetstp);
485 (void)signal(SIGTTOU, savettou);
486 (void)signal(SIGTTIN, savettin);
487 (void)sigprocmask(SIG_UNBLOCK, &nset, NULL);
492 * Write a file, ex-like if f set.
495 exwrite(char name[], FILE *fp, int f)
503 printf("\"%s\" ", name);
504 (void)fflush(stdout);
506 if (stat(name, &junk) >= 0 && S_ISREG(junk.st_mode)) {
508 fprintf(stderr, "%s: ", name);
509 fprintf(stderr, "File exists\n");
512 if ((of = Fopen(name, "w")) == NULL) {
518 while ((c = getc(fp)) != EOF) {
530 printf("%d/%ld\n", lc, cc);
531 (void)fflush(stdout);
536 * Edit the message being collected on fp.
537 * On return, make the edit file the new temp file.
540 mesedit(FILE *fp, int c)
542 sig_t sigint = signal(SIGINT, SIG_IGN);
543 FILE *nf = run_editor(fp, (off_t)-1, c, 0);
546 (void)fseeko(nf, (off_t)0, SEEK_END);
550 (void)signal(SIGINT, sigint);
554 * Pipe the message through the command.
555 * Old message is on stdin of command;
556 * New message collected from stdout.
557 * Sh -c must return 0 to accept the new message.
560 mespipe(FILE *fp, char cmd[])
564 sig_t sigint = signal(SIGINT, SIG_IGN);
565 char *sh, tempname[PATHSIZE];
567 (void)snprintf(tempname, sizeof(tempname),
568 "%s/mail.ReXXXXXXXXXX", tmpdir);
569 if ((fd = mkstemp(tempname)) == -1 ||
570 (nf = Fdopen(fd, "w+")) == NULL) {
571 warn("%s", tempname);
576 * stdin = current message.
577 * stdout = new message.
579 if ((sh = value("SHELL")) == NULL)
582 0, fileno(fp), fileno(nf), "-c", cmd, NULL) < 0) {
586 if (fsize(nf) == 0) {
587 fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
594 (void)fseeko(nf, (off_t)0, SEEK_END);
598 (void)signal(SIGINT, sigint);
602 * Interpolate the named messages into the current
603 * message, preceding each line with a tab.
604 * Return a count of the number of characters now in
605 * the message, or -1 if an error is encountered writing
606 * the message temporary. The flag argument is 'm' if we
607 * should shift over and 'f' if not.
610 forward(char ms[], FILE *fp, char *fn, int f)
613 struct ignoretab *ig;
616 msgvec = (int *)salloc((msgCount+1) * sizeof(*msgvec));
619 if (getmsglist(ms, msgvec, 0) < 0)
622 *msgvec = first(0, MMNORM);
624 printf("No appropriate messages\n");
629 if (f == 'f' || f == 'F')
631 else if ((tabst = value("indentprefix")) == NULL)
633 ig = isupper((unsigned char)f) ? NULL : ignore;
634 printf("Interpolating:");
635 for (; *msgvec != 0; msgvec++) {
636 struct message *mp = message + *msgvec - 1;
639 printf(" %d", *msgvec);
640 if (sendmessage(mp, fp, ig, tabst) < 0) {
650 * Print (continue) when continued after ^Z.
656 sig_t old_action = signal(s, SIG_DFL);
659 (void)sigemptyset(&nset);
660 (void)sigaddset(&nset, s);
661 (void)sigprocmask(SIG_UNBLOCK, &nset, NULL);
663 (void)sigprocmask(SIG_BLOCK, &nset, NULL);
664 (void)signal(s, old_action);
673 * On interrupt, come here to save the partial message in ~/dead.letter.
674 * Then jump out of the collection loop.
678 collint(int s __unused)
681 * the control flow is subtle, because we can be called from ~q.
684 if (value("ignore") != NULL) {
686 (void)fflush(stdout);
694 if (value("nosave") == NULL)
695 savedeadletter(collf);
696 longjmp(collabort, 1);
701 collhup(int s __unused)
704 savedeadletter(collf);
706 * Let's pretend nobody else wants to clean up,
707 * a true statement at this time.
713 savedeadletter(FILE *fp)
721 cp = getdeadletter();
723 dbuf = Fopen(cp, "a");
727 while ((c = getc(fp)) != EOF)