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
40 /* TODO longjmp() globbering as in cmd1.c and cmd3.c (see there)
41 * TODO Problem: Popen doesn't encapsulate all cases of open failures,
42 * TODO may leave child running if fdopen() fails! */
45 * Most strcpy/sprintf functions have been changed to strncpy/snprintf to
46 * correct several buffer overruns (at least one ot them was exploitable).
47 * Sat Jun 20 04:58:09 CEST 1998 Alvaro Martinez Echevarria <alvaro@lander.es>
49 * Note: We set egid to realgid ... and only if we need the egid we will
50 * switch back temporary. Nevertheless, I do not like seg faults.
51 * Werner Fink, <werner@suse.de>
56 #ifdef HAVE_NL_LANGINFO
57 # include <langinfo.h>
63 #include <sys/ioctl.h>
72 * Mail -- a mail program
74 * Startup -- interface with user.
77 static sigjmp_buf hdrjmp
;
80 sighandler_type dflpipe
= SIG_DFL
;
82 static void hdrstop(int signo
);
83 static void setscreensize(int dummy
);
86 main(int argc
, char *argv
[])
88 const char optstr
[] = "A:a:Bb:c:DdEeFfHIiNnO:q:Rr:S:s:T:tu:Vv~",
90 "Usage:\t%s [-BDdEFintv~] [-A acc] [-a attachment]\n"
91 "\t\t[-b bcc-addr] [-c cc-addr] [-O mtaopt [-O mtaopt-arg]]\n"
92 "\t\t[-q file] [-r from-addr] [-S var[=value]]\n"
93 "\t\t[-s subject] to-addr...\n"
94 "\t%s [-BDdEeHIiNnRv~] [-A acct]\n"
95 "\t\t[-S var[=value]] [-T name] -f [file]\n"
96 "\t%s [-BDdEeiNnRv~] [-A acc] [-S var[=value]] [-u user]\n";
99 struct name
*to
, *cc
, *bcc
, *smopts
;
100 struct attachment
*attach
;
101 char *cp
, *subject
, *ef
, *qf
, *fromaddr
, *Aflag
;
102 char existonly
, headersonly
, sendflag
, nosrc
, Eflag
, Fflag
, tflag
;
104 sighandler_type prevint
;
107 * Absolutely the first thing we do is save our egid
108 * and set it to the rgid, so that we can safely run
109 * setgid. We use the sgid (saved set-gid) to allow ourselves
110 * to revert to the egid if we want (temporarily) to become
113 effectivegid
= getegid();
115 if (setgid(realgid
) < 0) {
121 progname
= strrchr(argv
[0], '/');
122 if (progname
!= NULL
)
127 * Set up a reasonable environment.
128 * Figure out whether we are being run interactively,
129 * start the SIGCHLD catcher, and so forth.
131 safe_signal(SIGCHLD
, sigchild
);
132 is_a_tty
[0] = isatty(0);
133 is_a_tty
[1] = isatty(1);
135 assign("interactive", "");
137 safe_signal(SIGPIPE
, dflpipe
= SIG_IGN
);
139 assign("header", "");
141 #ifdef HAVE_SETLOCALE
142 setlocale(LC_ALL
, "");
143 mb_cur_max
= MB_CUR_MAX
;
144 # if defined HAVE_NL_LANGINFO && defined CODESET
145 if (value("ttycharset") == NULL
&& (cp
= nl_langinfo(CODESET
)) != NULL
)
146 assign("ttycharset", cp
);
148 # if defined HAVE_MBTOWC && defined HAVE_WCTYPE_H
149 if (mb_cur_max
> 1) {
151 if (mbtowc(&wc
, "\303\266", 2) == 2 && wc
== 0xF6 &&
152 mbtowc(&wc
, "\342\202\254", 3) == 3 &&
161 # ifdef NL_CAT_LOCALE
166 catd
= catopen(CATNAME
, i
);
169 iconvd
= (iconv_t
) -1;
173 * Now, determine how we are being used.
174 * We successively pick off - flags.
175 * If there is anything left, it is the base of the list
176 * of users to mail to. Argp will be set to point to the
177 * first of these users.
180 to
= cc
= bcc
= smopts
= NULL
;
182 subject
= ef
= qf
= fromaddr
= Aflag
= NULL
;
183 existonly
= headersonly
= sendflag
= nosrc
=
184 Eflag
= Fflag
= tflag
= 0;
187 while ((i
= getopt(argc
, argv
, optstr
)) != EOF
) {
190 /* Execute an account command later on */
194 /* Get attachment filenames */
195 attach
= add_attachment(attach
, optarg
, 0);
196 if (attach
== NULL
) {
203 /* Make 0/1 line buffered */
204 setvbuf(stdin
, NULL
, _IOLBF
, 0);
205 setvbuf(stdout
, NULL
, _IOLBF
, 0);
208 /* Get Blind Carbon Copy Recipient list */
209 bcc
= cat(bcc
, checkaddrs(lextract(optarg
,GBCC
|GFULL
)));
213 /* Get Carbon Copy Recipient list */
214 cc
= cat(cc
, checkaddrs(lextract(optarg
, GCC
|GFULL
)));
218 assign("disconnected", "");
235 * User is specifying file to "edit" with Mail,
236 * as opposed to reading system mailbox.
237 * If no argument is given, we read his mbox file.
238 * Check for remaining arguments later.
246 /* Show Newsgroups: field in header summary */
250 /* Ignore interrupts */
251 assign("ignore", "");
254 /* Avoid initial header printing */
256 unset_internal("header");
259 /* Don't source "unspecified system start-up file" */
263 /* Additional options to pass-through to MTA */
264 smopts
= cat(smopts
, nalloc(optarg
, 0));
268 /* Quote file TODO drop? -Q with real quote?? what ? */
274 /* Open folders read-only */
278 /* Set From address. */
281 smopts
= cat(smopts
, nalloc("-r", 0));
282 smopts
= cat(smopts
, lextract(optarg
, GFULL
));
283 if (count(smopts
) != i
+ 2) {
284 fprintf(stderr
, tr(271,
285 "More than one address "
293 /* Set variable (do so later, after RC loading..) */
294 argv
[scnt
++] = optarg
;
303 * Next argument is temp file to write which
304 * articles have been read/deleted for netnews.
307 if ((i
= creat(Tflag
, 0600)) < 0) {
314 /* Read defined set of headers from mail to be send */
319 /* Set user name to pretend to be */
320 uflag
= myname
= optarg
;
328 assign("verbose", "");
331 /* Enable tilde escapes even in non-interactive mode */
336 usage
: fprintf(stderr
, tr(135, usagestr
),
337 progname
, progname
, progname
);
344 if (optind
+ 1 < argc
) {
345 fprintf(stderr
, tr(205,
346 "More than one file given with -f\n"));
352 for (i
= optind
; argv
[i
]; i
++)
353 to
= cat(to
, checkaddrs(lextract(argv
[i
], GTO
|GFULL
)));
356 /* Check for inconsistent arguments */
357 if (ef
!= NULL
&& to
!= NULL
) {
358 fprintf(stderr
, tr(137,
359 "Cannot give -f and people to send to.\n"));
362 if (sendflag
&& !tflag
&& to
== NULL
) {
363 fprintf(stderr
, tr(138,
364 "Send options without primary recipient specified.\n"));
367 if (Rflag
&& to
!= NULL
) {
368 fprintf(stderr
, "The -R option is meaningless in send mode.\n");
371 if (Iflag
&& ef
== NULL
) {
372 fprintf(stderr
, tr(204, "Need -f with -I.\n"));
379 if (value("interactive"))
380 if (safe_signal(SIGWINCH
, SIG_IGN
) != SIG_IGN
)
381 safe_signal(SIGWINCH
, setscreensize
);
384 rcvmode
= !to
&& !tflag
;
390 * Expand returns a savestr, but load only uses the file name
391 * for fopen, so it's safe to do this.
393 if ((cp
= getenv("MAILRC")) != NULL
)
394 load(file_expand(cp
));
395 else if ((cp
= getenv("NAILRC")) != NULL
)
396 load(file_expand(cp
));
398 load(file_expand("~/.mailrc"));
399 if (getenv("NAIL_EXTRA_RC") == NULL
&&
400 (cp
= value("NAIL_EXTRA_RC")) != NULL
)
401 load(file_expand(cp
));
404 * Now we can set the account.
413 * Override 'skipemptybody' if '-E' flag was given.
416 assign("skipemptybody", "");
418 * -S arguments override rc files.
420 for (i
= 0; i
< scnt
; ++i
) {
430 * From address from command line overrides rc files.
433 assign("from", fromaddr
);
435 mail(to
, cc
, bcc
, smopts
, subject
, attach
, qf
, Fflag
, tflag
,
440 exit(senderr
? 1 : 0);
443 * Ok, we are reading mail.
444 * Decide whether we are editing a mailbox or reading
445 * the system mailbox, and open up the right stuff.
449 else if (*ef
== '@') {
451 * This must be treated specially to make invocation like
452 * -A imap -f @mailbox work.
454 if ((cp
= value("folder")) != NULL
&&
455 which_protocol(cp
) == PROTO_IMAP
)
456 strncpy(mailname
, cp
, PATHSIZE
)[PATHSIZE
-1] = '\0';
460 exit(1); /* error already reported */
464 if (mb
.mb_type
== MB_IMAP
)
465 imap_getheaders(1, msgCount
);
466 for (i
= 1; i
<= msgCount
; i
++)
467 printhead(i
, stdout
, 0);
470 callhook(mailname
, 0);
471 if (i
> 0 && value("emptystart") == NULL
)
473 if (sigsetjmp(hdrjmp
, 1) == 0) {
474 if ((prevint
= safe_signal(SIGINT
, SIG_IGN
)) != SIG_IGN
)
475 safe_signal(SIGINT
, hdrstop
);
477 if (value("quiet") == NULL
)
479 "%s version %s. Type ? for help.\n"),
480 value("bsdcompat") ? "Mail" : uagent
,
485 safe_signal(SIGINT
, prevint
);
488 if (mb
.mb_type
== MB_FILE
|| mb
.mb_type
== MB_MAILDIR
) {
489 safe_signal(SIGHUP
, SIG_IGN
);
490 safe_signal(SIGINT
, SIG_IGN
);
491 safe_signal(SIGQUIT
, SIG_IGN
);
493 strncpy(mboxname
, expand("&"), sizeof mboxname
)[sizeof mboxname
-1]='\0';
499 * Interrupt printing of the headers.
508 fprintf(stderr
, tr(141, "\nInterrupt\n"));
509 siglongjmp(hdrjmp
, 1);
513 * Compute what the screen size for printing headers should be.
514 * We use the following algorithm for the height:
515 * If baud rate < 1200, use 9
516 * If baud rate = 1200, use 14
517 * If baud rate > 1200, use 24 or ws_row
518 * Width is either 80 or ws_col;
522 setscreensize(int dummy
)
532 if (ioctl(1, TIOCGWINSZ
, &ws
) < 0)
533 ws
.ws_col
= ws
.ws_row
= 0;
535 if (tcgetattr(1, &tbuf
) < 0)
538 ospeed
= cfgetospeed(&tbuf
);
541 else if (ospeed
== B1200
)
544 else if (ws
.ws_row
!= 0)
545 scrnheight
= ws
.ws_row
;
550 if ((realscreenheight
= ws
.ws_row
) == 0)
551 realscreenheight
= 24;
554 if ((scrnwidth
= ws
.ws_col
) == 0)