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
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)cmd3.c 8.2 (Berkeley) 4/20/95
30 * $FreeBSD: src/usr.bin/mail/cmd3.c,v 1.4.6.4 2003/01/06 05:46:03 mikeh Exp $
37 * Mail -- a mail program
39 * Still more user commands.
43 * Process a shell escape by saving signals, ignoring signals,
49 sig_t sigint = signal(SIGINT, SIG_IGN);
53 if (strlcpy(cmd, str, sizeof(cmd)) >= sizeof(cmd))
55 if (bangexp(cmd, sizeof(cmd)) < 0)
57 if ((sh = value("SHELL")) == NULL)
59 run_command(sh, 0, -1, -1, "-c", cmd, NULL);
60 signal(SIGINT, sigint);
66 * Fork an interactive shell.
72 sig_t sigint = signal(SIGINT, SIG_IGN);
75 if ((sh = value("SHELL")) == NULL)
77 run_command(sh, 0, -1, -1, NULL, NULL, NULL);
78 signal(SIGINT, sigint);
84 * Expand the shell escape by expanding unescaped !'s into the
85 * last issued command where possible.
88 bangexp(char *str, size_t strsize)
91 static char lastbang[BUFSIZ];
100 if (n < strlen(lastbang)) {
102 printf("Command buffer overflow\n");
106 if (strlcpy(cp2, lastbang, sizeof(bangbuf) - (cp2 - bangbuf))
107 >= sizeof(bangbuf) - (cp2 - bangbuf))
109 cp2 += strlen(lastbang);
110 n -= strlen(lastbang);
114 if (*cp == '\\' && cp[1] == '!') {
127 printf("!%s\n", bangbuf);
130 if (strlcpy(str, bangbuf, strsize) >= strsize)
132 if (strlcpy(lastbang, bangbuf, sizeof(lastbang)) >= sizeof(lastbang))
138 * Print out a nice help message from some file or another.
147 if ((f = Fopen(_PATH_HELP, "r")) == NULL) {
148 warn("%s", _PATH_HELP);
151 while ((c = getc(f)) != EOF)
158 * Change user's working directory.
161 schdir(char **arglist)
165 if (*arglist == NULL) {
170 if ((cp = expand(*arglist)) == NULL)
182 if (value("Replyall") == NULL && value("flipr") == NULL)
183 return (dorespond(msgvec));
185 return (doRespond(msgvec));
189 * Reply to a list of messages. Extract each name from the
190 * message header and send them off to mail1()
193 dorespond(int *msgvec)
196 char *cp, *rcv, *replyto;
201 if (msgvec[1] != 0) {
202 printf("Sorry, can't reply to multiple messages at once\n");
205 mp = &message[msgvec[0] - 1];
208 if ((rcv = skin(hfield("from", mp))) == NULL)
209 rcv = skin(nameof(mp, 1));
210 if ((replyto = skin(hfield("reply-to", mp))) != NULL)
211 np = extract(replyto, GTO);
212 else if ((cp = skin(hfield("to", mp))) != NULL)
213 np = extract(cp, GTO);
218 * Delete my name from the reply list,
219 * and with it, all my alternate names.
221 np = delname(np, myname);
223 for (ap = altnames; *ap != NULL; ap++)
224 np = delname(np, *ap);
225 if (np != NULL && replyto == NULL)
226 np = cat(np, extract(rcv, GTO));
227 else if (np == NULL) {
229 printf("Empty reply-to field -- replying to author\n");
230 np = extract(rcv, GTO);
233 if ((head.h_subject = hfield("subject", mp)) == NULL)
234 head.h_subject = hfield("subj", mp);
235 head.h_subject = reedit(head.h_subject);
236 if (replyto == NULL && (cp = skin(hfield("cc", mp))) != NULL) {
237 np = elide(extract(cp, GCC));
238 np = delname(np, myname);
240 for (ap = altnames; *ap != NULL; ap++)
241 np = delname(np, *ap);
246 head.h_smopts = NULL;
247 head.h_replyto = value("REPLYTO");
248 head.h_inreplyto = skin(hfield("message-id", mp));
254 * Modify the subject we are replying to to begin with Re: if
255 * it does not already.
264 if ((subj[0] == 'r' || subj[0] == 'R') &&
265 (subj[1] == 'e' || subj[1] == 'E') &&
268 newsubj = salloc(strlen(subj) + 5);
269 sprintf(newsubj, "Re: %s", subj);
274 * Preserve the named messages, so that they will be sent
275 * back to the system mailbox.
278 preserve(int *msgvec)
284 printf("Cannot \"preserve\" in edit mode\n");
287 for (ip = msgvec; *ip != 0; ip++) {
289 mp = &message[mesg-1];
290 mp->m_flag |= MPRESERVE;
298 * Mark all given messages as unread.
305 for (ip = msgvec; *ip != 0; ip++) {
306 dot = &message[*ip-1];
307 dot->m_flag &= ~(MREAD|MTOUCH);
308 dot->m_flag |= MSTATUS;
314 * Print the size of each message.
322 for (ip = msgvec; *ip != 0; ip++) {
324 mp = &message[mesg-1];
325 printf("%d: %ld/%ld\n", mesg, mp->m_lines, mp->m_size);
331 * Quit quickly. If we are sourcing, just pop the input level
332 * by returning an error.
344 * Set or display a variable value. Syntax is similar to that
352 char varbuf[BUFSIZ], **ap, **p;
355 if (*arglist == NULL) {
356 for (h = 0, s = 1; h < HSHSIZE; h++)
357 for (vp = variables[h]; vp != NULL; vp = vp->v_link)
359 ap = (char **)salloc(s * sizeof(*ap));
360 for (h = 0, p = ap; h < HSHSIZE; h++)
361 for (vp = variables[h]; vp != NULL; vp = vp->v_link)
365 for (p = ap; *p != NULL; p++)
366 printf("%s\t%s\n", *p, value(*p));
370 for (ap = arglist; *ap != NULL; ap++) {
373 while (cp2 < varbuf + sizeof(varbuf) - 1 && *cp != '=' && *cp != '\0')
380 if (equal(varbuf, "")) {
381 printf("Non-null variable name required\n");
391 * Unset a bunch of variable values.
394 unset(char **arglist)
396 struct var *vp, *vp2;
401 for (ap = arglist; *ap != NULL; ap++) {
402 if ((vp2 = lookup(*ap)) == NULL) {
405 else if (!sourcing) {
406 printf("\"%s\": undefined variable\n", *ap);
412 if (vp2 == variables[h]) {
413 variables[h] = variables[h]->v_link;
419 for (vp = variables[h]; vp->v_link != vp2; vp = vp->v_link)
421 vp->v_link = vp2->v_link;
430 * Put add users to a group.
435 struct grouphead *gh;
437 char **ap, *gname, **p;
441 for (h = 0, s = 1; h < HSHSIZE; h++)
442 for (gh = groups[h]; gh != NULL; gh = gh->g_link)
444 ap = (char **)salloc(s * sizeof(*ap));
445 for (h = 0, p = ap; h < HSHSIZE; h++)
446 for (gh = groups[h]; gh != NULL; gh = gh->g_link)
450 for (p = ap; *p != NULL; p++)
454 if (argv[1] == NULL) {
460 if ((gh = findgroup(gname)) == NULL) {
461 gh = calloc(sizeof(*gh), 1);
462 gh->g_name = vcopy(gname);
464 gh->g_link = groups[h];
469 * Insert names from the command list into the group.
470 * Who cares if there are duplicates? They get tossed
474 for (ap = argv+1; *ap != NULL; ap++) {
475 gp = calloc(sizeof(*gp), 1);
476 gp->ge_name = vcopy(*ap);
477 gp->ge_link = gh->g_list;
484 * Sort the passed string vecotor into ascending dictionary
492 for (ap = list; *ap != NULL; ap++)
496 qsort(list, ap-list, sizeof(*list), diction);
500 * Do a dictionary order comparison of the arguments from
504 diction(const void *a, const void *b)
506 return (strcmp(*(const char **)a, *(const char **)b));
510 * The do nothing command for comments.
521 * Change to another file. With no argument, print information about
527 if (argv[0] == NULL) {
531 if (setfile(*argv) < 0)
538 * Expand file names like echo
545 for (ap = argv; *ap != NULL; ap++) {
547 if ((cp = expand(cp)) != NULL) {
560 if (value("Replyall") == NULL && value("flipr") == NULL)
561 return (doRespond(msgvec));
563 return (dorespond(msgvec));
567 * Reply to a series of messages by simply mailing to the senders
568 * and not messing around with the To: and Cc: lists as in normal
572 doRespond(int *msgvec)
580 for (ap = msgvec; *ap != 0; ap++) {
581 mp = &message[*ap - 1];
584 if ((cp = skin(hfield("from", mp))) == NULL)
585 cp = skin(nameof(mp, 2));
586 head.h_to = cat(head.h_to, extract(cp, GTO));
587 mid = skin(hfield("message-id", mp));
589 if (head.h_to == NULL)
591 mp = &message[msgvec[0] - 1];
592 if ((head.h_subject = hfield("subject", mp)) == NULL)
593 head.h_subject = hfield("subj", mp);
594 head.h_subject = reedit(head.h_subject);
597 head.h_smopts = NULL;
598 head.h_replyto = value("REPLYTO");
599 head.h_inreplyto = mid;
605 * Conditional commands. These allow one to parameterize one's
606 * .mailrc and do some things if sending, others if receiving.
614 printf("Illegal nested \"if\"\n");
629 printf("Unrecognized if-keyword: \"%s\"\n", cp);
636 * Implement 'else'. This is pretty simple -- we just
637 * flip over the conditional flag.
644 printf("\"Else\" without matching \"if\"\n");
656 printf("Mail's idea of conditions is screwed up\n");
664 * End of if statement. Just set cond back to anything.
670 printf("\"Endif\" without matching \"if\"\n");
678 * Set the list of alternate names.
681 alternates(char **namelist)
684 char **ap, **ap2, *cp;
686 c = argcount(namelist) + 1;
690 for (ap = altnames; *ap != NULL; ap++)
697 altnames = calloc((unsigned)c, sizeof(char *));
698 for (ap = namelist, ap2 = altnames; *ap != NULL; ap++, ap2++) {
699 cp = calloc((unsigned)strlen(*ap) + 1, sizeof(char));