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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)cmd3.c 8.2 (Berkeley) 4/20/95";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
46 * Mail -- a mail program
48 * Still more user commands.
52 * Process a shell escape by saving signals, ignoring signals,
59 sig_t sigint = signal(SIGINT, SIG_IGN);
63 if (strlcpy(cmd, str, sizeof(cmd)) >= sizeof(cmd))
65 if (bangexp(cmd, sizeof(cmd)) < 0)
67 if ((sh = value("SHELL")) == NULL)
69 (void)run_command(sh, 0, -1, -1, "-c", cmd, NULL);
70 (void)signal(SIGINT, sigint);
76 * Fork an interactive shell.
83 sig_t sigint = signal(SIGINT, SIG_IGN);
86 if ((sh = value("SHELL")) == NULL)
88 (void)run_command(sh, 0, -1, -1, NULL, NULL, NULL);
89 (void)signal(SIGINT, sigint);
95 * Expand the shell escape by expanding unescaped !'s into the
96 * last issued command where possible.
103 char bangbuf[BUFSIZ];
104 static char lastbang[BUFSIZ];
111 while (*cp != '\0') {
113 if (n < strlen(lastbang)) {
115 printf("Command buffer overflow\n");
119 if (strlcpy(cp2, lastbang, sizeof(bangbuf) - (cp2 - bangbuf))
120 >= sizeof(bangbuf) - (cp2 - bangbuf))
122 cp2 += strlen(lastbang);
123 n -= strlen(lastbang);
127 if (*cp == '\\' && cp[1] == '!') {
140 printf("!%s\n", bangbuf);
141 (void)fflush(stdout);
143 if (strlcpy(str, bangbuf, strsize) >= strsize)
145 if (strlcpy(lastbang, bangbuf, sizeof(lastbang)) >= sizeof(lastbang))
151 * Print out a nice help message from some file or another.
160 if ((f = Fopen(_PATH_HELP, "r")) == NULL) {
161 warn("%s", _PATH_HELP);
164 while ((c = getc(f)) != EOF)
171 * Change user's working directory.
179 if (*arglist == NULL) {
184 if ((cp = expand(*arglist)) == NULL)
197 if (value("Replyall") == NULL && value("flipr") == NULL)
198 return (dorespond(msgvec));
200 return (doRespond(msgvec));
204 * Reply to a list of messages. Extract each name from the
205 * message header and send them off to mail1()
212 char *cp, *rcv, *replyto;
217 if (msgvec[1] != 0) {
218 printf("Sorry, can't reply to multiple messages at once\n");
221 mp = &message[msgvec[0] - 1];
224 if ((rcv = skin(hfield("from", mp))) == NULL)
225 rcv = skin(nameof(mp, 1));
226 if ((replyto = skin(hfield("reply-to", mp))) != NULL)
227 np = extract(replyto, GTO);
228 else if ((cp = skin(hfield("to", mp))) != NULL)
229 np = extract(cp, GTO);
234 * Delete my name from the reply list,
235 * and with it, all my alternate names.
237 np = delname(np, myname);
239 for (ap = altnames; *ap != NULL; ap++)
240 np = delname(np, *ap);
241 if (np != NULL && replyto == NULL)
242 np = cat(np, extract(rcv, GTO));
243 else if (np == NULL) {
245 printf("Empty reply-to field -- replying to author\n");
246 np = extract(rcv, GTO);
249 if ((head.h_subject = hfield("subject", mp)) == NULL)
250 head.h_subject = hfield("subj", mp);
251 head.h_subject = reedit(head.h_subject);
252 if (replyto == NULL && (cp = skin(hfield("cc", mp))) != NULL) {
253 np = elide(extract(cp, GCC));
254 np = delname(np, myname);
256 for (ap = altnames; *ap != NULL; ap++)
257 np = delname(np, *ap);
262 head.h_smopts = NULL;
263 head.h_replyto = value("REPLYTO");
264 head.h_inreplyto = skin(hfield("message-id", mp));
270 * Modify the subject we are replying to to begin with Re: if
271 * it does not already.
281 if ((subj[0] == 'r' || subj[0] == 'R') &&
282 (subj[1] == 'e' || subj[1] == 'E') &&
285 newsubj = salloc(strlen(subj) + 5);
286 sprintf(newsubj, "Re: %s", subj);
291 * Preserve the named messages, so that they will be sent
292 * back to the system mailbox.
302 printf("Cannot \"preserve\" in edit mode\n");
305 for (ip = msgvec; *ip != 0; ip++) {
307 mp = &message[mesg-1];
308 mp->m_flag |= MPRESERVE;
316 * Mark all given messages as unread.
324 for (ip = msgvec; *ip != 0; ip++) {
325 dot = &message[*ip-1];
326 dot->m_flag &= ~(MREAD|MTOUCH);
327 dot->m_flag |= MSTATUS;
333 * Print the size of each message.
342 for (ip = msgvec; *ip != 0; ip++) {
344 mp = &message[mesg-1];
345 printf("%d: %ld/%ld\n", mesg, mp->m_lines, mp->m_size);
351 * Quit quickly. If we are sourcing, just pop the input level
352 * by returning an error.
365 * Set or display a variable value. Syntax is similar to that
374 char varbuf[BUFSIZ], **ap, **p;
377 if (*arglist == NULL) {
378 for (h = 0, s = 1; h < HSHSIZE; h++)
379 for (vp = variables[h]; vp != NULL; vp = vp->v_link)
381 ap = (char **)salloc(s * sizeof(*ap));
382 for (h = 0, p = ap; h < HSHSIZE; h++)
383 for (vp = variables[h]; vp != NULL; vp = vp->v_link)
387 for (p = ap; *p != NULL; p++)
388 printf("%s\t%s\n", *p, value(*p));
392 for (ap = arglist; *ap != NULL; ap++) {
395 while (cp2 < varbuf + sizeof(varbuf) - 1 && *cp != '=' && *cp != '\0')
402 if (equal(varbuf, "")) {
403 printf("Non-null variable name required\n");
413 * Unset a bunch of variable values.
419 struct var *vp, *vp2;
424 for (ap = arglist; *ap != NULL; ap++) {
425 if ((vp2 = lookup(*ap)) == NULL) {
428 else if (!sourcing) {
429 printf("\"%s\": undefined variable\n", *ap);
435 if (vp2 == variables[h]) {
436 variables[h] = variables[h]->v_link;
442 for (vp = variables[h]; vp->v_link != vp2; vp = vp->v_link)
444 vp->v_link = vp2->v_link;
453 * Put add users to a group.
459 struct grouphead *gh;
461 char **ap, *gname, **p;
465 for (h = 0, s = 1; h < HSHSIZE; h++)
466 for (gh = groups[h]; gh != NULL; gh = gh->g_link)
468 ap = (char **)salloc(s * sizeof(*ap));
469 for (h = 0, p = ap; h < HSHSIZE; h++)
470 for (gh = groups[h]; gh != NULL; gh = gh->g_link)
474 for (p = ap; *p != NULL; p++)
478 if (argv[1] == NULL) {
484 if ((gh = findgroup(gname)) == NULL) {
485 gh = calloc(sizeof(*gh), 1);
486 gh->g_name = vcopy(gname);
488 gh->g_link = groups[h];
493 * Insert names from the command list into the group.
494 * Who cares if there are duplicates? They get tossed
498 for (ap = argv+1; *ap != NULL; ap++) {
499 gp = calloc(sizeof(*gp), 1);
500 gp->ge_name = vcopy(*ap);
501 gp->ge_link = gh->g_list;
508 * Sort the passed string vecotor into ascending dictionary
517 for (ap = list; *ap != NULL; ap++)
521 qsort(list, ap-list, sizeof(*list), diction);
525 * Do a dictionary order comparison of the arguments from
532 return (strcmp(*(const char **)a, *(const char **)b));
536 * The do nothing command for comments.
548 * Change to another file. With no argument, print information about
556 if (argv[0] == NULL) {
560 if (setfile(*argv) < 0)
567 * Expand file names like echo
575 for (ap = argv; *ap != NULL; ap++) {
577 if ((cp = expand(cp)) != NULL) {
591 if (value("Replyall") == NULL && value("flipr") == NULL)
592 return (doRespond(msgvec));
594 return (dorespond(msgvec));
598 * Reply to a series of messages by simply mailing to the senders
599 * and not messing around with the To: and Cc: lists as in normal
612 for (ap = msgvec; *ap != 0; ap++) {
613 mp = &message[*ap - 1];
616 if ((cp = skin(hfield("from", mp))) == NULL)
617 cp = skin(nameof(mp, 2));
618 head.h_to = cat(head.h_to, extract(cp, GTO));
619 mid = skin(hfield("message-id", mp));
621 if (head.h_to == NULL)
623 mp = &message[msgvec[0] - 1];
624 if ((head.h_subject = hfield("subject", mp)) == NULL)
625 head.h_subject = hfield("subj", mp);
626 head.h_subject = reedit(head.h_subject);
629 head.h_smopts = NULL;
630 head.h_replyto = value("REPLYTO");
631 head.h_inreplyto = mid;
637 * Conditional commands. These allow one to parameterize one's
638 * .mailrc and do some things if sending, others if receiving.
647 printf("Illegal nested \"if\"\n");
662 printf("Unrecognized if-keyword: \"%s\"\n", cp);
669 * Implement 'else'. This is pretty simple -- we just
670 * flip over the conditional flag.
678 printf("\"Else\" without matching \"if\"\n");
690 printf("Mail's idea of conditions is screwed up\n");
698 * End of if statement. Just set cond back to anything.
705 printf("\"Endif\" without matching \"if\"\n");
713 * Set the list of alternate names.
720 char **ap, **ap2, *cp;
722 c = argcount(namelist) + 1;
726 for (ap = altnames; *ap != NULL; ap++)
732 (void)free(altnames);
733 altnames = calloc((unsigned)c, sizeof(char *));
734 for (ap = namelist, ap2 = altnames; *ap != NULL; ap++, ap2++) {
735 cp = calloc((unsigned)strlen(*ap) + 1, sizeof(char));