2 * S-nail - a mail user agent derived from Berkeley Mail.
4 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
5 * Copyright (c) 2012 Steffen "Daode" Nurpmeso.
8 * Copyright (c) 1980, 1993
9 * The Regents of the University of California. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * Most strcpy/sprintf functions have been changed to strncpy/snprintf to
42 * correct several buffer overruns (at least one ot them was exploitable).
43 * Sat Jun 20 04:58:09 CEST 1998 Alvaro Martinez Echevarria <alvaro@lander.es>
45 * Note: We set egid to realgid ... and only if we need the egid we will
46 * switch back temporary. Nevertheless, I do not like seg faults.
47 * Werner Fink, <werner@suse.de>
52 #ifdef HAVE_NL_LANGINFO
53 # include <langinfo.h>
59 #include <sys/ioctl.h>
68 * Mail -- a mail program
70 * Startup -- interface with user.
73 static sigjmp_buf hdrjmp
;
76 sighandler_type dflpipe
= SIG_DFL
;
78 static void hdrstop(int signo
);
79 static void setscreensize(int dummy
);
82 main(int argc
, char *argv
[])
84 const char optstr
[] = "A:a:Bb:c:DdEeFfHIiNnO:q:Rr:S:s:T:tu:Vv~",
86 "Usage:\t%s [-BDdEFintv~] [-A acc] [-a attachment]\n"
87 "\t\t[-b bcc-addr] [-c cc-addr] [-O mtaopt [-O mtaopt-arg]]\n"
88 "\t\t[-q file] [-r from-addr] [-S var[=value]]\n"
89 "\t\t[-s subject] to-addr...\n"
90 "\t%s [-BDdEeHIiNnRv~] [-A acct]\n"
91 "\t\t[-S var[=value]] [-T name] -f [file]\n"
92 "\t%s [-BDdEeiNnRv~] [-A acc] [-S var[=value]] [-u user]\n";
95 struct name
*to
, *cc
, *bcc
, *smopts
;
96 struct attachment
*attach
;
97 char *cp
, *subject
, *ef
, *qf
, *fromaddr
, *Aflag
;
98 char existonly
, headersonly
, sendflag
, nosrc
, Eflag
, Fflag
, tflag
;
100 sighandler_type prevint
;
103 * Absolutely the first thing we do is save our egid
104 * and set it to the rgid, so that we can safely run
105 * setgid. We use the sgid (saved set-gid) to allow ourselves
106 * to revert to the egid if we want (temporarily) to become
109 effectivegid
= getegid();
111 if (setgid(realgid
) < 0) {
117 progname
= strrchr(argv
[0], '/');
118 if (progname
!= NULL
)
123 * Set up a reasonable environment.
124 * Figure out whether we are being run interactively,
125 * start the SIGCHLD catcher, and so forth.
127 safe_signal(SIGCHLD
, sigchild
);
128 is_a_tty
[0] = isatty(0);
129 is_a_tty
[1] = isatty(1);
131 assign("interactive", "");
133 safe_signal(SIGPIPE
, dflpipe
= SIG_IGN
);
135 assign("header", "");
137 #ifdef HAVE_SETLOCALE
138 setlocale(LC_ALL
, "");
139 mb_cur_max
= MB_CUR_MAX
;
140 # if defined HAVE_NL_LANGINFO && defined CODESET
141 if (value("ttycharset") == NULL
&& (cp
= nl_langinfo(CODESET
)) != NULL
)
142 assign("ttycharset", cp
);
144 # if defined HAVE_MBTOWC && defined HAVE_WCTYPE_H
145 if (mb_cur_max
> 1) {
147 if (mbtowc(&wc
, "\303\266", 2) == 2 && wc
== 0xF6 &&
148 mbtowc(&wc
, "\342\202\254", 3) == 3 &&
157 # ifdef NL_CAT_LOCALE
162 catd
= catopen(CATNAME
, i
);
165 iconvd
= (iconv_t
) -1;
169 * Now, determine how we are being used.
170 * We successively pick off - flags.
171 * If there is anything left, it is the base of the list
172 * of users to mail to. Argp will be set to point to the
173 * first of these users.
176 to
= cc
= bcc
= smopts
= NULL
;
178 subject
= ef
= qf
= fromaddr
= Aflag
= NULL
;
179 existonly
= headersonly
= sendflag
= nosrc
=
180 Eflag
= Fflag
= tflag
= 0;
183 while ((i
= getopt(argc
, argv
, optstr
)) != EOF
) {
186 /* Execute an account command later on */
190 /* Get attachment filenames */
191 attach
= add_attachment(attach
, optarg
, 0);
192 if (attach
== NULL
) {
199 /* Make 0/1 line buffered */
200 setvbuf(stdin
, NULL
, _IOLBF
, 0);
201 setvbuf(stdout
, NULL
, _IOLBF
, 0);
204 /* Get Blind Carbon Copy Recipient list */
205 bcc
= cat(bcc
, checkaddrs(lextract(optarg
,GBCC
|GFULL
)));
209 /* Get Carbon Copy Recipient list */
210 cc
= cat(cc
, checkaddrs(lextract(optarg
, GCC
|GFULL
)));
214 assign("disconnected", "");
231 * User is specifying file to "edit" with Mail,
232 * as opposed to reading system mailbox.
233 * If no argument is given, we read his mbox file.
234 * Check for remaining arguments later.
242 /* Show Newsgroups: field in header summary */
246 /* Ignore interrupts */
247 assign("ignore", "");
250 /* Avoid initial header printing */
252 unset_internal("header");
255 /* Don't source "unspecified system start-up file" */
259 /* Additional options to pass-through to MTA */
260 smopts
= cat(smopts
, nalloc(optarg
, 0));
264 /* Quote file TODO drop? -Q with real quote?? what ? */
270 /* Open folders read-only */
274 /* Set From address. */
277 smopts
= cat(smopts
, nalloc("-r", 0));
278 smopts
= cat(smopts
, lextract(optarg
, GFULL
));
279 if (count(smopts
) != i
+ 2) {
280 fprintf(stderr
, tr(271,
281 "More than one address "
289 /* Set variable (do so later, after RC loading..) */
290 argv
[scnt
++] = optarg
;
291 /* TODO Also set -S directly (see TODO) */
305 * Next argument is temp file to write which
306 * articles have been read/deleted for netnews.
309 if ((i
= creat(Tflag
, 0600)) < 0) {
316 /* Read defined set of headers from mail to be send */
321 /* Set user name to pretend to be */
322 uflag
= myname
= optarg
;
330 assign("verbose", "");
333 /* Enable tilde escapes even in non-interactive mode */
338 usage
: fprintf(stderr
, tr(135, usagestr
),
339 progname
, progname
, progname
);
346 if (optind
+ 1 < argc
) {
347 fprintf(stderr
, tr(205,
348 "More than one file given with -f\n"));
354 for (i
= optind
; argv
[i
]; i
++)
355 to
= cat(to
, checkaddrs(lextract(argv
[i
], GTO
|GFULL
)));
358 /* Check for inconsistent arguments */
359 if (ef
!= NULL
&& to
!= NULL
) {
360 fprintf(stderr
, tr(137,
361 "Cannot give -f and people to send to.\n"));
364 if (sendflag
&& !tflag
&& to
== NULL
) {
365 fprintf(stderr
, tr(138,
366 "Send options without primary recipient specified.\n"));
369 if (Rflag
&& to
!= NULL
) {
370 fprintf(stderr
, "The -R option is meaningless in send mode.\n");
373 if (Iflag
&& ef
== NULL
) {
374 fprintf(stderr
, tr(204, "Need -f with -I.\n"));
381 if (value("interactive"))
382 if (safe_signal(SIGWINCH
, SIG_IGN
) != SIG_IGN
)
383 safe_signal(SIGWINCH
, setscreensize
);
386 rcvmode
= !to
&& !tflag
;
392 * Expand returns a savestr, but load only uses the file name
393 * for fopen, so it's safe to do this.
395 if ((cp
= getenv("MAILRC")) != NULL
)
396 load(file_expand(cp
));
397 else if ((cp
= getenv("NAILRC")) != NULL
)
398 load(file_expand(cp
));
400 load(file_expand("~/.mailrc"));
401 if (getenv("NAIL_EXTRA_RC") == NULL
&&
402 (cp
= value("NAIL_EXTRA_RC")) != NULL
)
403 load(file_expand(cp
));
406 * Now we can set the account.
415 * Override 'skipemptybody' if '-E' flag was given.
418 assign("skipemptybody", "");
420 * -S arguments override rc files.
422 for (i
= 0; i
< scnt
; ++i
) {
432 * From address from command line overrides rc files.
435 assign("from", fromaddr
);
437 mail(to
, cc
, bcc
, smopts
, subject
, attach
, qf
, Fflag
, tflag
,
442 exit(senderr
? 1 : 0);
445 * Ok, we are reading mail.
446 * Decide whether we are editing a mailbox or reading
447 * the system mailbox, and open up the right stuff.
451 else if (*ef
== '@') {
453 * This must be treated specially to make invocation like
454 * -A imap -f @mailbox work.
456 if ((cp
= value("folder")) != NULL
&&
457 which_protocol(cp
) == PROTO_IMAP
)
458 strncpy(mailname
, cp
, PATHSIZE
)[PATHSIZE
-1] = '\0';
462 exit(1); /* error already reported */
466 if (mb
.mb_type
== MB_IMAP
)
467 imap_getheaders(1, msgCount
);
468 for (i
= 1; i
<= msgCount
; i
++)
469 printhead(i
, stdout
, 0);
472 callhook(mailname
, 0);
473 if (i
> 0 && value("emptystart") == NULL
)
475 if (sigsetjmp(hdrjmp
, 1) == 0) {
476 if ((prevint
= safe_signal(SIGINT
, SIG_IGN
)) != SIG_IGN
)
477 safe_signal(SIGINT
, hdrstop
);
479 if (value("quiet") == NULL
)
481 "%s version %s. Type ? for help.\n"),
482 value("bsdcompat") ? "Mail" : uagent
,
487 safe_signal(SIGINT
, prevint
);
490 if (mb
.mb_type
== MB_FILE
|| mb
.mb_type
== MB_MAILDIR
) {
491 safe_signal(SIGHUP
, SIG_IGN
);
492 safe_signal(SIGINT
, SIG_IGN
);
493 safe_signal(SIGQUIT
, SIG_IGN
);
495 strncpy(mboxname
, expand("&"), sizeof mboxname
)[sizeof mboxname
-1]='\0';
501 * Interrupt printing of the headers.
510 fprintf(stderr
, tr(141, "\nInterrupt\n"));
511 siglongjmp(hdrjmp
, 1);
515 * Compute what the screen size for printing headers should be.
516 * We use the following algorithm for the height:
517 * If baud rate < 1200, use 9
518 * If baud rate = 1200, use 14
519 * If baud rate > 1200, use 24 or ws_row
520 * Width is either 80 or ws_col;
524 setscreensize(int dummy
)
534 if (ioctl(1, TIOCGWINSZ
, &ws
) < 0)
535 ws
.ws_col
= ws
.ws_row
= 0;
537 if (tcgetattr(1, &tbuf
) < 0)
540 ospeed
= cfgetospeed(&tbuf
);
543 else if (ospeed
== B1200
)
546 else if (ws
.ws_row
!= 0)
547 scrnheight
= ws
.ws_row
;
552 if ((realscreenheight
= ws
.ws_row
) == 0)
553 realscreenheight
= 24;
556 if ((scrnwidth
= ws
.ws_col
) == 0)