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
33 * @(#)aux.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/mail/aux.c,v 1.4.6.4 2003/01/06 05:46:03 mikeh Exp $
35 * $DragonFly: src/usr.bin/mail/aux.c,v 1.4 2004/09/08 03:01:11 joerg Exp $
44 * Mail -- a mail program
46 * Auxiliary functions.
49 static char *save2str(char *, char *);
52 * Return a pointer to a dynamic copy of the argument.
58 int size = strlen(str) + 1;
60 if ((new = salloc(size)) != NULL)
61 bcopy(str, new, size);
66 * Make a copy of new argument incorporating old one.
69 save2str(char *str, char *old)
72 int newsize = strlen(str) + 1;
73 int oldsize = old ? strlen(old) + 1 : 0;
75 if ((new = salloc(newsize + oldsize)) != NULL) {
77 bcopy(old, new, oldsize);
78 new[oldsize - 1] = ' ';
80 bcopy(str, new + oldsize, newsize);
86 * Touch the named message by setting its MTOUCH flag.
87 * Touched messages have the effect of not being sent
88 * back to the system mailbox on exit.
91 touch(struct message *mp)
94 if ((mp->m_flag & MREAD) == 0)
95 mp->m_flag |= MREAD|MSTATUS;
99 * Test to see if the passed file name is a directory.
100 * Return true if it is.
107 if (stat(name, &sbuf) < 0)
109 return (S_ISDIR(sbuf.st_mode));
113 * Count the number of arguments in the given string raw list.
116 argcount(char **argv)
120 for (ap = argv; *ap++ != NULL;)
122 return (ap - argv - 1);
126 * Return the desired header line from the passed message
127 * pointer (or NULL if the desired header field is not available).
130 hfield(const char *field, struct message *mp)
133 char linebuf[LINESIZE];
136 char *colon, *oldhfield = NULL;
139 if ((lc = mp->m_lines - 1) < 0)
141 if (readline(ibuf, linebuf, LINESIZE) < 0)
144 if ((lc = gethfield(ibuf, linebuf, lc, &colon)) < 0)
146 if ((hfield = ishfield(linebuf, colon, field)) != NULL)
147 oldhfield = save2str(hfield, oldhfield);
153 * Return the next header field found in the given message.
154 * Return >= 0 if something found, < 0 elsewise.
155 * "colon" is set to point to the colon in the header.
156 * Must deal with \ continuations & other such fraud.
159 gethfield(FILE *f, char *linebuf, int rem, char **colon)
161 char line2[LINESIZE];
168 if ((c = readline(f, linebuf, LINESIZE)) <= 0)
170 for (cp = linebuf; isprint((unsigned char)*cp) && *cp != ' ' && *cp != ':';
173 if (*cp != ':' || cp == linebuf)
176 * I guess we got a headline.
177 * Handle wraparounding
182 while (--cp >= linebuf && (*cp == ' ' || *cp == '\t'))
187 ungetc(c = getc(f), f);
188 if (c != ' ' && c != '\t')
190 if ((c = readline(f, line2, LINESIZE)) < 0)
193 for (cp2 = line2; *cp2 == ' ' || *cp2 == '\t'; cp2++)
196 if (cp + c >= linebuf + LINESIZE - 2)
209 * Check whether the passed line is a header line of
210 * the desired breed. Return the field body, or 0.
214 ishfield(char *linebuf, char *colon, const char *field)
219 if (strcasecmp(linebuf, field) != 0) {
224 for (cp++; *cp == ' ' || *cp == '\t'; cp++)
230 * Copy a string and lowercase the result.
231 * dsize: space left in buffer (including space for NULL)
234 istrncpy(char *dest, const char *src, size_t dsize)
237 strlcpy(dest, src, dsize);
239 *dest++ = tolower((unsigned char)*dest);
243 * The following code deals with input stacking to do source
244 * commands. All but the current file pointer are saved on
248 static int ssp; /* Top of file stack */
250 FILE *s_file; /* File we were in. */
251 int s_cond; /* Saved state of conditionals */
252 int s_loading; /* Loading .mailrc, etc. */
254 #define SSTACK_SIZE 64 /* XXX was NOFILE. */
255 static struct sstack sstack[SSTACK_SIZE];
258 * Pushdown current input file and switch to a new one.
259 * Set the global flag "sourcing" so that others will realize
260 * that they are no longer reading from a tty (in all probability).
263 source(char **arglist)
268 if ((cp = expand(*arglist)) == NULL)
270 if ((fi = Fopen(cp, "r")) == NULL) {
274 if (ssp >= SSTACK_SIZE - 1) {
275 printf("Too much \"sourcing\" going on.\n");
279 sstack[ssp].s_file = input;
280 sstack[ssp].s_cond = cond;
281 sstack[ssp].s_loading = loading;
291 * Pop the current input back to the previous level.
292 * Update the "sourcing" flag as appropriate.
298 printf("\"Source\" stack over-pop.\n");
304 printf("Unmatched \"if\"\n");
306 cond = sstack[ssp].s_cond;
307 loading = sstack[ssp].s_loading;
308 input = sstack[ssp].s_file;
315 * Touch the indicated file.
316 * This is nifty for the shell.
322 struct timeval tv[2];
326 gettimeofday(&tv[0], NULL);
328 TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
333 * Get sender's name from this message. If the message has
334 * a bunch of arpanet stuff in it, we may have to skin the name
335 * before returning it.
338 nameof(struct message *mp, int reptype)
342 cp = skin(name1(mp, reptype));
343 if (reptype != 0 || charcount(cp, '!') < 2)
345 cp2 = strrchr(cp, '!');
347 while (cp2 > cp && *cp2 != '!')
355 * Start of a "comment".
359 skip_comment(char *cp)
363 for (; nesting > 0 && *cp; cp++) {
381 * Skin an arpa net address according to the RFC 822 interpretation
387 char *nbuf, *bufend, *cp, *cp2;
388 int c, gotlt, lastsp;
392 if (strchr(name, '(') == NULL && strchr(name, '<') == NULL
393 && strchr(name, ' ') == NULL)
396 /* We assume that length(input) <= length(output) */
397 if ((nbuf = malloc(strlen(name) + 1)) == NULL)
398 err(1, "Out of memory");
402 for (cp = name, cp2 = bufend; (c = *cp++) != '\0'; ) {
405 cp = skip_comment(cp);
411 * Start of a "quoted-string".
412 * Copy it in its entirety.
414 while ((c = *cp) != '\0') {
420 else if ((c = *cp) != '\0') {
429 if (cp[0] == 'a' && cp[1] == 't' && cp[2] == ' ')
430 cp += 3, *cp2++ = '@';
432 if (cp[0] == '@' && cp[1] == ' ')
433 cp += 2, *cp2++ = '@';
447 while ((c = *cp) != '\0' && c != ',') {
450 cp = skip_comment(cp);
452 while ((c = *cp) != '\0') {
456 if (c == '\\' && *cp != '\0')
471 if (c == ',' && *cp == ' ' && !gotlt) {
482 if ((cp = realloc(nbuf, strlen(nbuf) + 1)) != NULL)
488 * Fetch the sender's name from the passed message.
490 * 0 -- get sender's name for display purposes
491 * 1 -- get sender's name for reply
492 * 2 -- get sender's name for Reply
495 name1(struct message *mp, int reptype)
497 char namebuf[LINESIZE];
498 char linebuf[LINESIZE];
503 if ((cp = hfield("from", mp)) != NULL)
505 if (reptype == 0 && (cp = hfield("sender", mp)) != NULL)
509 if (readline(ibuf, linebuf, LINESIZE) < 0)
510 return (savestr(namebuf));
512 for (cp = linebuf; *cp != '\0' && *cp != ' '; cp++)
514 for (; *cp == ' ' || *cp == '\t'; cp++)
516 for (cp2 = &namebuf[strlen(namebuf)];
517 *cp != '\0' && *cp != ' ' && *cp != '\t' &&
518 cp2 < namebuf + LINESIZE - 1;)
521 if (readline(ibuf, linebuf, LINESIZE) < 0)
522 return (savestr(namebuf));
523 if ((cp = strchr(linebuf, 'F')) == NULL)
524 return (savestr(namebuf));
525 if (strncmp(cp, "From", 4) != 0)
526 return (savestr(namebuf));
527 while ((cp = strchr(cp, 'r')) != NULL) {
528 if (strncmp(cp, "remote", 6) == 0) {
529 if ((cp = strchr(cp, 'f')) == NULL)
531 if (strncmp(cp, "from", 4) != 0)
533 if ((cp = strchr(cp, ' ')) == NULL)
540 cp2 = strrchr(namebuf, '!') + 1;
541 strlcpy(cp2, cp, sizeof(namebuf) - (cp2 - namebuf) - 1);
542 strcat(namebuf, "!");
547 return (savestr(namebuf));
551 * Count the occurances of c in str
554 charcount(char *str, int c)
559 for (i = 0, cp = str; *cp != '\0'; cp++)
566 * See if the given header field is supposed to be ignored.
569 isign(const char *field, struct ignoretab ignore[2])
571 char realfld[LINESIZE];
573 if (ignore == ignoreall)
576 * Lower-case the string, so that "Status" and "status"
577 * will hash to the same place.
579 istrncpy(realfld, field, sizeof(realfld));
580 if (ignore[1].i_count > 0)
581 return (!member(realfld, ignore + 1));
583 return (member(realfld, ignore));
587 member(char *realfield, struct ignoretab *table)
591 for (igp = table->i_head[hash(realfield)]; igp != NULL; igp = igp->i_link)
592 if (*igp->i_field == *realfield &&
593 equal(igp->i_field, realfield))