2 * Copyright (c) 1980, 1993
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)names.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/mail/names.c,v 1.4.6.3 2003/01/06 05:46:03 mikeh Exp $
35 * $DragonFly: src/usr.bin/mail/names.c,v 1.5 2004/09/08 03:01:11 joerg Exp $
39 * Mail -- a mail program
49 * Allocate a single element of a name list,
50 * initialize its name field to the passed
54 nalloc(char *str, int ntype)
58 np = (struct name *)salloc(sizeof(*np));
62 np->n_name = savestr(str);
67 * Find the tail of a list and return it.
70 tailof(struct name *name)
77 while (np->n_flink != NULL)
83 * Extract a list of names from a line,
84 * and make a list of names from it.
85 * Return the list or NULL if none found.
88 extract(char *line, int ntype)
91 struct name *top, *np, *t;
93 if (line == NULL || *line == '\0')
95 if ((nbuf = malloc(strlen(line) + 1)) == NULL)
96 err(1, "Out of memory");
100 while ((cp = yankword(cp, nbuf)) != NULL) {
101 t = nalloc(nbuf, ntype);
114 * Turn a list of names into a string of the same names.
117 detract(struct name *np, int ntype)
123 comma = ntype & GCOMMA;
129 fprintf(stderr, "detract asked to insert commas\n");
130 for (p = np; p != NULL; p = p->n_flink) {
131 if (ntype && (p->n_type & GMASK) != ntype)
133 s += strlen(p->n_name) + 1;
142 for (p = np; p != NULL; p = p->n_flink) {
143 if (ntype && (p->n_type & GMASK) != ntype)
145 cp += strlcpy(cp, p->n_name, strlen(p->n_name) + 1);
146 if (comma && p->n_flink != NULL)
151 if (comma && *--cp == ',')
157 * Grab a single word (liberal word)
158 * Throw away things between ()'s, and take anything between <>.
161 yankword(char *ap, char *wbuf)
172 while (*cp != '\0') {
184 } else if (*cp == ' ' || *cp == '\t' || *cp == ',')
190 for (cp2 = wbuf; *cp && (*cp2++ = *cp++) != '>';)
193 for (cp2 = wbuf; *cp != '\0' && strchr(" \t,(", *cp) == NULL;
201 * Grab a single login name (liberal word).
202 * Throw away things between ()'s, take anything between <>,
203 * and look for words before metacharacters %, @, !.
206 yanklogin(char *ap, char *wbuf)
208 char *cp, *cp2, *cp_temp;
218 while (*cp != '\0') {
230 } else if (*cp == ' ' || *cp == '\t' || *cp == ',') {
238 * Now, let's go forward till we meet the needed character,
239 * and step one word back.
242 /* First, remember current point. */
247 * Note that we look ahead in a cycle. This is safe, since
248 * non-end of string is checked first.
250 while (*cp != '\0' && strchr("@%!", *(cp + 1)) == NULL)
254 * Now, start stepping back to the first non-word character,
255 * while counting the number of symbols in a word.
257 while (cp != cp_temp && strchr(" \t,<>", *(cp - 1)) == NULL) {
262 /* Finally, grab the word forward. */
274 * For each recipient in the passed name list with a /
275 * in the name, append the message to the end of the named file
276 * and remove him from the recipient list.
278 * Recipients whose name begins with | are piped through the given
279 * program and removed.
282 outof(struct name *names, FILE *fo, struct header *hp)
285 struct name *np, *top;
295 if (!isfileaddr(np->n_name) && np->n_name[0] != '|') {
299 ispipe = np->n_name[0] == '|';
301 fname = np->n_name+1;
303 fname = expand(np->n_name);
306 * See if we have copied the complete message out yet.
312 char tempname[PATHSIZE];
314 snprintf(tempname, sizeof(tempname),
315 "%s/mail.ReXXXXXXXXXX", tmpdir);
316 if ((fd = mkstemp(tempname)) == -1 ||
317 (fout = Fdopen(fd, "a")) == NULL) {
318 warn("%s", tempname);
322 image = open(tempname, O_RDWR);
325 warn("%s", tempname);
330 fcntl(image, F_SETFD, 1);
331 fprintf(fout, "From %s %s", myname, date);
333 GTO|GSUBJECT|GCC|GREPLYTO|GINREPLYTO|GNL);
334 while ((c = getc(fo)) != EOF)
340 warn("%s", tempname);
349 * Now either copy "image" to the desired file
350 * or give it as the standard input to the desired
351 * program as appropriate.
361 * We can't really reuse the same image file,
362 * because multiple piped recipients will
363 * share the same lseek location and trample
366 if ((sh = value("SHELL")) == NULL)
369 sigaddset(&nset, SIGHUP);
370 sigaddset(&nset, SIGINT);
371 sigaddset(&nset, SIGQUIT);
372 pid = start_command(sh, &nset, image, -1, "-c", fname,
381 if ((fout = Fopen(fname, "a")) == NULL) {
386 if ((f = dup(image)) < 0) {
390 fin = Fdopen(f, "r");
392 fprintf(stderr, "Can't reopen image\n");
398 while ((c = getc(fin)) != EOF)
412 * In days of old we removed the entry from the
413 * the list; now for sake of header expansion
414 * we leave it in and mark it as deleted.
427 * Determine if the passed address is a local "send to file" address.
428 * If any of the network metacharacters precedes any slashes, it can't
429 * be a filename. We cheat with .'s to allow path names like ./...
432 isfileaddr(char *name)
438 for (cp = name; *cp != '\0'; cp++) {
439 if (*cp == '!' || *cp == '%' || *cp == '@')
448 * Map all of the aliased users in the invoker's mailrc
449 * file and insert them into the list.
450 * Changed after all these months of service to recursively
451 * expand names (2/14/80).
455 usermap(struct name *names)
457 struct name *new, *np, *cp;
458 struct grouphead *gh;
463 metoo = (value("metoo") != NULL);
465 if (np->n_name[0] == '\\') {
471 gh = findgroup(np->n_name);
474 new = gexpand(new, gh, metoo, np->n_type);
483 * Recursively expand a group name. We limit the expansion to some
484 * fixed level to keep things from going haywire.
485 * Direct recursion is not expanded for convenience.
489 gexpand(struct name *nlist, struct grouphead *gh, int metoo, int ntype)
492 struct grouphead *ngh;
497 if (depth > MAXEXP) {
498 printf("Expanding alias to depth larger than %d\n", MAXEXP);
502 for (gp = gh->g_list; gp != NULL; gp = gp->ge_link) {
506 if (strcmp(cp, gh->g_name) == 0)
508 if ((ngh = findgroup(cp)) != NULL) {
509 nlist = gexpand(nlist, ngh, metoo, ntype);
513 np = nalloc(cp, ntype);
515 * At this point should allow to expand
516 * to self if only person in group
518 if (gp == gh->g_list && gp->ge_link == NULL)
520 if (!metoo && strcmp(cp, myname) == 0)
523 nlist = put(nlist, np);
530 * Concatenate the two passed name lists, return the result.
533 cat(struct name *n1, struct name *n2)
548 * Unpack the name list onto a vector of strings.
549 * Return an error if the name list won't fit.
552 unpack(struct name *np)
556 int t, extra, metoo, verbose;
559 if ((t = count(n)) == 0)
560 errx(1, "No names to unpack");
562 * Compute the number of extra arguments we will need.
563 * We need at least two extra -- one for "mail" and one for
564 * the terminating 0 pointer. Additional spots may be needed
565 * to pass along -f to the host mailer.
569 metoo = value("metoo") != NULL;
572 verbose = value("verbose") != NULL;
575 top = (char **)salloc((t + extra) * sizeof(*top));
583 for (; n != NULL; n = n->n_flink)
584 if ((n->n_type & GDEL) == 0)
591 * Remove all of the duplicates from the passed name list by
592 * insertion sorting them, then checking for dups.
593 * Return the head of the new list.
596 elide(struct name *names)
598 struct name *np, *t, *new;
611 while (strcasecmp(t->n_name, np->n_name) < 0) {
612 if (t->n_flink == NULL)
618 * If we ran out of t's, put the new entry after
619 * the current value of t.
622 if (strcasecmp(t->n_name, np->n_name) < 0) {
632 * Otherwise, put the new entry in front of the
633 * current t. If at the front of the list,
634 * the new guy becomes the new head of the list.
648 * The normal case -- we are inserting into the
649 * middle of the list.
655 x->n_blink = t->n_blink;
656 t->n_blink->n_flink = x;
661 * Now the list headed up by new is sorted.
662 * Go through it and remove duplicates.
668 while (t->n_flink != NULL &&
669 strcasecmp(np->n_name, t->n_flink->n_name) == 0)
671 if (t == np || t == NULL) {
677 * Now t points to the last entry with the same name
678 * as np. Make np point beyond t.
681 np->n_flink = t->n_flink;
682 if (t->n_flink != NULL)
683 t->n_flink->n_blink = np;
690 * Put another node onto a list of names and return
694 put(struct name *list, struct name *node)
696 node->n_flink = list;
697 node->n_blink = NULL;
699 list->n_blink = node;
704 * Determine the number of undeleted elements in
705 * a name list and return it.
708 count(struct name *np)
712 for (c = 0; np != NULL; np = np->n_flink)
713 if ((np->n_type & GDEL) == 0)
719 * Delete the given name from a namelist.
722 delname(struct name *np, char *name)
726 for (p = np; p != NULL; p = p->n_flink)
727 if (strcasecmp(p->n_name, name) == 0) {
728 if (p->n_blink == NULL) {
729 if (p->n_flink != NULL)
730 p->n_flink->n_blink = NULL;
734 if (p->n_flink == NULL) {
735 if (p->n_blink != NULL)
736 p->n_blink->n_flink = NULL;
739 p->n_blink->n_flink = p->n_flink;
740 p->n_flink->n_blink = p->n_blink;
746 * Pretty print a name list
747 * Uncomment it if you need it.
752 prettyprint(struct name *name)
758 fprintf(stderr, "%s(%d) ", np->n_name, np->n_type);
761 fprintf(stderr, "\n");