1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 #pragma ident "%Z%%M% %I% %E% SMI"
41
42 #include "rcv.h"
43 #ifndef preSVr4
44 #include <locale.h>
45 #endif
46
47 /*
48 * mailx -- a modified version of a University of California at Berkeley
49 * mail program
50 *
51 * Startup -- interface with user.
52 */
53
54 static void hdrstop(int);
55
56 static jmp_buf hdrjmp;
57
58 const char *const version = "mailx version 5.0";
59
60 /*
61 * Find out who the user is, copy his mail file (if exists) into
62 * /tmp/Rxxxxx and set up the message pointers. Then, print out the
63 * message headers and read user commands.
64 *
65 * Command line syntax:
66 * mailx [ -i ] [ -r address ] [ -h number ] [ -f [ name ] ]
67 * or:
68 * mailx [ -i ] [ -r address ] [ -h number ] people ...
69 *
70 * and a bunch of other options.
71 */
72
73 int
main(int argc,char ** argv)74 main(int argc, char **argv)
75 {
76 register char *ef;
77 register int argp;
78 int mustsend, f, goerr = 0;
79 void (*prevint)(int);
80 int loaded = 0;
81 struct termio tbuf;
82 struct termios tbufs;
83 int c;
84 char *cwd, *mf;
85
86 /*
87 * Set up a reasonable environment.
88 * Figure out whether we are being run interactively, set up
89 * all the temporary files, buffer standard output, and so forth.
90 */
91
92 #ifndef preSVr4
93 (void)setlocale(LC_ALL, "");
94 #endif
95 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
96 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
97 #endif
98 (void) textdomain(TEXT_DOMAIN);
99
100 #ifdef SIGCONT
101 sigset(SIGCONT, SIG_DFL);
102 #endif
103 rpterr = 0; /* initialize; set when we output to stderr */
104 progname = argv[0];
105 if (progname[strlen(progname) - 1] != 'x') {
106 assign("bsdcompat", "");
107 assign("escapeok", ""); /* XXX */
108 }
109 myegid = getegid();
110 myrgid = getgid();
111 myeuid = geteuid();
112 myruid = getuid();
113 mypid = getpid();
114 setgid(myrgid);
115 setuid(myruid);
116 inithost();
117 intty = isatty(0);
118 if (ioctl(1, TCGETS, &tbufs) < 0) {
119 if (ioctl(1, TCGETA, &tbuf)==0) {
120 outtty = 1;
121 baud = tbuf.c_cflag & CBAUD;
122 } else
123 baud = B9600;
124 } else {
125 outtty = 1;
126 baud = cfgetospeed(&tbufs);
127 }
128 image = -1;
129
130 /*
131 * Now, determine how we are being used.
132 * We successively pick off instances of -r, -h, -f, and -i.
133 * If called as "rmail" we note this fact for letter sending.
134 * If there is anything left, it is the base of the list
135 * of users to mail to. Argp will be set to point to the
136 * first of these users.
137 */
138
139 ef = NOSTR;
140 argp = -1;
141 mustsend = 0;
142 if (argc > 0 && **argv == 'r')
143 rmail++;
144 while ((c = getopt(argc, argv, "b:Bc:defFh:HiInNr:s:u:UtT:vV~")) != EOF)
145 switch (c) {
146 case 'e':
147 /*
148 * exit status only
149 */
150 exitflg++;
151 break;
152
153 case 'r':
154 /*
155 * Next argument is address to be sent along
156 * to the mailer.
157 */
158 mustsend++;
159 rflag = optarg;
160 break;
161
162 case 'T':
163 /*
164 * Next argument is temp file to write which
165 * articles have been read/deleted for netnews.
166 */
167 Tflag = optarg;
168 if ((f = creat(Tflag, TEMPPERM)) < 0) {
169 perror(Tflag);
170 exit(1);
171 }
172 close(f);
173 /* fall through for -I too */
174 /* FALLTHROUGH */
175
176 case 'I':
177 /*
178 * print newsgroup in header summary
179 */
180 newsflg++;
181 break;
182
183 case 'u':
184 /*
185 * Next argument is person's mailbox to use.
186 * Treated the same as "-f /var/mail/user".
187 */
188 {
189 static char u[PATHSIZE];
190 snprintf(u, sizeof (u), "%s%s", maildir, optarg);
191 ef = u;
192 break;
193 }
194
195 case 'i':
196 /*
197 * User wants to ignore interrupts.
198 * Set the variable "ignore"
199 */
200 assign("ignore", "");
201 break;
202
203 case 'U':
204 UnUUCP++;
205 break;
206
207 case 'd':
208 assign("debug", "");
209 break;
210
211 case 'h':
212 /*
213 * Specified sequence number for network.
214 * This is the number of "hops" made so
215 * far (count of times message has been
216 * forwarded) to help avoid infinite mail loops.
217 */
218 mustsend++;
219 hflag = atoi(optarg);
220 if (hflag == 0) {
221 fprintf(stderr,
222 gettext("-h needs non-zero number\n"));
223 goerr++;
224 }
225 break;
226
227 case 's':
228 /*
229 * Give a subject field for sending from
230 * non terminal
231 */
232 mustsend++;
233 sflag = optarg;
234 break;
235
236 case 'c': /* Cc: from command line */
237 mustsend++;
238 cflag = optarg;
239 break;
240
241 case 'b': /* Bcc: from command line */
242 mustsend++;
243 bflag = optarg;
244 break;
245
246 case 'f':
247 /*
248 * User is specifying file to "edit" with mailx,
249 * as opposed to reading system mailbox.
250 * If no argument is given after -f, we read his/her
251 * $MBOX file or mbox in his/her home directory.
252 */
253 ef = (argc == optind || *argv[optind] == '-')
254 ? "" : argv[optind++];
255 if (*ef && *ef != '/' && *ef != '+')
256 cwd = getcwd(NOSTR, PATHSIZE);
257 break;
258
259 case 'F':
260 Fflag++;
261 mustsend++;
262 break;
263
264 case 'n':
265 /*
266 * User doesn't want to source
267 * /etc/mail/mailx.rc
268 */
269 nosrc++;
270 break;
271
272 case 'N':
273 /*
274 * Avoid initial header printing.
275 */
276 noheader++;
277 break;
278
279 case 'H':
280 /*
281 * Print headers and exit
282 */
283 Hflag++;
284 break;
285
286 case 'V':
287 puts(version);
288 return 0;
289
290 case '~':
291 /*
292 * Permit tildas no matter where
293 * the input is coming from.
294 */
295 assign("escapeok", "");
296 break;
297
298 case 'v':
299 /*
300 * Send mailer verbose flag
301 */
302 assign("verbose", "");
303 break;
304
305 case 'B':
306 /*
307 * Don't buffer output
308 * (Line buffered is good enough)
309 */
310 setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
311 setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
312 break;
313
314 case 't':
315 /*
316 * Like sendmail -t, read headers from text
317 */
318 tflag++;
319 mustsend++;
320 break;
321
322 case '?':
323 default:
324 goerr++;
325 break;
326 }
327
328 if (optind != argc)
329 argp = optind;
330
331 /*
332 * Check for inconsistent arguments.
333 */
334
335 if (newsflg && ef==NOSTR) {
336 fprintf(stderr, gettext("Need -f with -I flag\n"));
337 goerr++;
338 }
339 if (ef != NOSTR && argp != -1) {
340 fprintf(stderr,
341 gettext("Cannot give -f and people to send to.\n"));
342 goerr++;
343 }
344 if (exitflg && (mustsend || argp != -1))
345 exit(1); /* nonsense flags involving -e simply exit */
346 if (tflag && argp != -1) {
347 fprintf(stderr,
348 gettext("Ignoring recipients on command line with -t\n"));
349 argp = -1;
350 } else if (!tflag && mustsend && argp == -1) {
351 fprintf(stderr,
352 gettext("The flags you gave are used only when sending mail.\n"));
353 goerr++;
354 }
355 if (goerr) {
356 fprintf(stderr,
357 gettext("Usage: %s -eiIUdFntBNHvV~ -T FILE -u USER -h hops -r address\n"),
358 progname);
359 fprintf(stderr,
360 gettext("\t\t-s SUBJECT -f FILE users\n"));
361 exit(1);
362 }
363 tinit();
364 input = stdin;
365 rcvmode = !tflag && argp == -1;
366 if (!nosrc)
367 load(MASTER);
368
369 if (!rcvmode) {
370 load(Getf("MAILRC"));
371 if (tflag)
372 tmail();
373 else
374 mail(&argv[argp]);
375 exit(senderr ? senderr : rpterr);
376 }
377
378 /*
379 * Ok, we are reading mail.
380 * Decide whether we are editing a mailbox or reading
381 * the system mailbox, and open up the right stuff.
382 *
383 * Do this before sourcing the MAILRC, because there might be
384 * a 'chdir' there that breaks the -f option. But if the
385 * file specified with -f is a folder name, go ahead and
386 * source the MAILRC anyway so that "folder" will be defined.
387 */
388
389 nstrcpy(origname, PATHSIZE, mailname);
390 editfile = mailname;
391
392 if (ef != NOSTR) {
393 if (ef == NOSTR || *ef == '\0' || *ef == '+') {
394 load(Getf("MAILRC"));
395 loaded++;
396 }
397 ef = *ef ? safeexpand(ef) : Getf("MBOX");
398 nstrcpy(origname, PATHSIZE, ef);
399 if (ef[0] != '/') {
400 if (cwd == NOSTR)
401 cwd = getcwd(NOSTR, PATHSIZE);
402 nstrcat(cwd, PATHSIZE, "/");
403 nstrcat(cwd, PATHSIZE, ef);
404 ef = cwd;
405 }
406 editfile = ef;
407 edit++;
408 }
409
410 if (setfile(editfile, edit) < 0)
411 exit(1);
412
413 if (!loaded)
414 load(Getf("MAILRC"));
415 if (msgCount > 0 && !noheader && value("header") != NOSTR) {
416 if (setjmp(hdrjmp) == 0) {
417 if ((prevint = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
418 sigset(SIGINT, hdrstop);
419 announce();
420 fflush(stdout);
421 sigset(SIGINT, prevint);
422 }
423 }
424 if (Hflag || (!edit && msgCount == 0)) {
425 if (!Hflag) {
426 fprintf(stderr, gettext("No mail for %s\n"), myname);
427 Verhogen();
428 }
429 fflush(stdout);
430 exit(rpterr);
431 }
432 commands();
433 sigset(SIGHUP, SIG_IGN);
434 sigset(SIGINT, SIG_IGN);
435 sigset(SIGQUIT, SIG_IGN);
436 if (!outtty)
437 sigset(SIGPIPE, SIG_IGN);
438 if (edit)
439 edstop(0);
440 else {
441 quit(0);
442 Verhogen();
443 }
444 return (rpterr);
445 }
446
447 /*
448 * Interrupt printing of the headers.
449 */
450 static void
451 #ifdef __cplusplus
hdrstop(int)452 hdrstop(int)
453 #else
454 /* ARGSUSED */
455 hdrstop(int s)
456 #endif
457 {
458
459 fflush(stdout);
460 fprintf(stderr, gettext("\nInterrupt\n"));
461 # ifdef OLD_BSD_SIGS
462 sigrelse(SIGINT);
463 # endif
464 longjmp(hdrjmp, 1);
465 }
466