1 /*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.2 (Berkeley) 4/20/95
31 * $FreeBSD: src/usr.bin/mail/main.c,v 1.6.2.5 2003/01/06 05:46:03 mikeh Exp $
32 */
33
34 #define EXTERN
35 #include "rcv.h"
36 #include <fcntl.h>
37 #include "extern.h"
38
39 /*
40 * Mail -- a mail program
41 *
42 * Startup -- interface with user.
43 */
44
45 jmp_buf hdrjmp;
46
47 extern const char *version;
48
49 int
main(int argc,char ** argv)50 main(int argc, char **argv)
51 {
52 int i;
53 struct name *to, *cc, *bcc, *smopts;
54 char *subject, *replyto;
55 char *ef, *rc;
56 char nosrc = 0;
57 const char *progname;
58 sig_t prevint;
59
60 /*
61 * Set up a reasonable environment.
62 * Figure out whether we are being run interactively,
63 * start the SIGCHLD catcher, and so forth.
64 */
65 signal(SIGCHLD, sigchild);
66 if (isatty(0))
67 assign("interactive", "");
68 image = -1;
69 /*
70 * Now, determine how we are being used.
71 * We successively pick off - flags.
72 * If there is anything left, it is the base of the list
73 * of users to mail to. Argp will be set to point to the
74 * first of these users.
75 */
76 ef = NULL;
77 to = NULL;
78 cc = NULL;
79 bcc = NULL;
80 smopts = NULL;
81 subject = NULL;
82 while ((i = getopt(argc, argv, "FEHINT:b:c:edfins:u:v")) != -1) {
83 switch (i) {
84 case 'T':
85 /*
86 * Next argument is temp file to write which
87 * articles have been read/deleted for netnews.
88 */
89 Tflag = optarg;
90 if ((i = open(Tflag, O_CREAT | O_TRUNC | O_WRONLY,
91 0600)) < 0)
92 err(1, "%s", Tflag);
93 close(i);
94 break;
95 case 'u':
96 /*
97 * Next argument is person to pretend to be.
98 */
99 myname = optarg;
100 unsetenv("MAIL");
101 break;
102 case 'i':
103 /*
104 * User wants to ignore interrupts.
105 * Set the variable "ignore"
106 */
107 assign("ignore", "");
108 break;
109 case 'd':
110 debug++;
111 break;
112 case 'e':
113 /*
114 * User wants to check mail and exit.
115 */
116 assign("checkmode", "");
117 break;
118 case 'H':
119 /*
120 * User wants a header summary only.
121 */
122 assign("headersummary", "");
123 break;
124 case 'F':
125 /*
126 * User wants to record messages to files
127 * named after first recipient username.
128 */
129 assign("recordrecip", "");
130 break;
131 case 's':
132 /*
133 * Give a subject field for sending from
134 * non terminal
135 */
136 subject = optarg;
137 break;
138 case 'f':
139 /*
140 * User is specifying file to "edit" with Mail,
141 * as opposed to reading system mailbox.
142 * If no argument is given after -f, we read his
143 * mbox file.
144 *
145 * getopt() can't handle optional arguments, so here
146 * is an ugly hack to get around it.
147 */
148 if ((argv[optind] != NULL) && (argv[optind][0] != '-'))
149 ef = argv[optind++];
150 else
151 ef = "&";
152 break;
153 case 'n':
154 /*
155 * User doesn't want to source /usr/lib/Mail.rc
156 */
157 nosrc++;
158 break;
159 case 'N':
160 /*
161 * Avoid initial header printing.
162 */
163 assign("noheader", "");
164 break;
165 case 'v':
166 /*
167 * Send mailer verbose flag
168 */
169 assign("verbose", "");
170 break;
171 case 'I':
172 /*
173 * We're interactive
174 */
175 assign("interactive", "");
176 break;
177 case 'c':
178 /*
179 * Get Carbon Copy Recipient list
180 */
181 cc = cat(cc, nalloc(optarg, GCC));
182 break;
183 case 'b':
184 /*
185 * Get Blind Carbon Copy Recipient list
186 */
187 bcc = cat(bcc, nalloc(optarg, GBCC));
188 break;
189 case 'E':
190 /*
191 * Don't send empty files.
192 */
193 assign("dontsendempty", "");
194 break;
195 case '?':
196 progname = getprogname();
197 fprintf(stderr,
198 "Usage: %s [-EiInv] [-s subject] [-c cc-addr] [-b bcc-addr] [-F] to-addr ...\n"
199 " %*s [- sendmail-options ...]\n"
200 " %s [-EHiInNv] [-F] -f [name]\n"
201 " %s [-EHiInNv] [-F] [-u user]\n"
202 " %s -e [-f name]\n"
203 " %s -H\n", progname, (int)strlen(progname), "",
204 progname, progname, progname, progname);
205 exit(1);
206 }
207 }
208 for (i = optind; (argv[i] != NULL) && (*argv[i] != '-'); i++)
209 to = cat(to, nalloc(argv[i], GTO));
210 for (; argv[i] != NULL; i++)
211 smopts = cat(smopts, nalloc(argv[i], 0));
212 /*
213 * Check for inconsistent arguments.
214 */
215 if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL))
216 errx(1, "You must specify direct recipients with -s, -c, or -b.");
217 if (ef != NULL && to != NULL)
218 errx(1, "Cannot give -f and people to send to.");
219 tinit();
220 /*
221 * Initialize screensize now and watch for later terminal changes.
222 */
223 setscreensize(0);
224 if (signal(SIGWINCH, setscreensize) == SIG_ERR)
225 warnx("failed to catch SIGWINCH for terminal size changes");
226 input = stdin;
227 rcvmode = !to;
228 spreserve();
229 if (!nosrc) {
230 char *s, *path_rc;
231
232 if ((path_rc = malloc(sizeof(_PATH_MASTER_RC))) == NULL)
233 err(1, "malloc(path_rc) failed");
234
235 strcpy(path_rc, _PATH_MASTER_RC);
236 while ((s = strsep(&path_rc, ":")) != NULL)
237 if (*s != '\0')
238 load(s);
239 }
240 /*
241 * Expand returns a savestr, but load only uses the file name
242 * for fopen, so it's safe to do this.
243 */
244 if ((rc = getenv("MAILRC")) == NULL)
245 rc = "~/.mailrc";
246 load(expand(rc));
247
248 replyto = value("REPLYTO");
249 if (!rcvmode) {
250 mail(to, cc, bcc, smopts, subject, replyto);
251 /*
252 * why wait?
253 */
254 exit(senderr);
255 }
256
257 if (value("checkmode") != NULL) {
258 if (ef == NULL)
259 ef = "%s";
260 if (setfile(ef) <= 0) {
261 /* Either an error has occured, or no mail. */
262 exit(1);
263 } else {
264 exit(0);
265 }
266 /* NOTREACHED */
267 }
268 /*
269 * Ok, we are reading mail.
270 * Decide whether we are editing a mailbox or reading
271 * the system mailbox, and open up the right stuff.
272 */
273 if (ef == NULL)
274 ef = "%";
275 if (setfile(ef) < 0)
276 exit(1); /* error already reported */
277 if (setjmp(hdrjmp) == 0) {
278 if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
279 signal(SIGINT, hdrstop);
280 if (value("quiet") == NULL)
281 printf("Mail version %s. Type ? for help.\n",
282 version);
283 announce();
284 fflush(stdout);
285 signal(SIGINT, prevint);
286 }
287
288 /* If we were in header summary mode, it's time to exit. */
289 if (value("headersummary") != NULL)
290 exit(0);
291
292 commands();
293 signal(SIGHUP, SIG_IGN);
294 signal(SIGINT, SIG_IGN);
295 signal(SIGQUIT, SIG_IGN);
296 quit();
297 exit(0);
298 }
299
300 /*
301 * Interrupt printing of the headers.
302 */
303 /*ARGSUSED*/
304 void
hdrstop(int signo)305 hdrstop(int signo)
306 {
307 fflush(stdout);
308 fprintf(stderr, "\nInterrupt\n");
309 longjmp(hdrjmp, 1);
310 }
311
312 /*
313 * Compute what the screen size for printing headers should be.
314 * We use the following algorithm for the height:
315 * If baud rate < 1200, use 9
316 * If baud rate = 1200, use 14
317 * If baud rate > 1200, use 24 or ws_row
318 * Width is either 80 or ws_col;
319 */
320 void
setscreensize(int signo __unused)321 setscreensize(int signo __unused)
322 {
323 struct termios tbuf;
324 struct winsize ws;
325 speed_t speed;
326
327 if (ioctl(1, TIOCGWINSZ, (char *)&ws) < 0)
328 ws.ws_col = ws.ws_row = 0;
329 if (tcgetattr(1, &tbuf) < 0)
330 speed = B9600;
331 else
332 speed = cfgetospeed(&tbuf);
333 if (speed < B1200)
334 screenheight = 9;
335 else if (speed == B1200)
336 screenheight = 14;
337 else if (ws.ws_row != 0)
338 screenheight = ws.ws_row;
339 else
340 screenheight = 24;
341 if ((realscreenheight = ws.ws_row) == 0)
342 realscreenheight = 24;
343 if ((screenwidth = ws.ws_col) == 0)
344 screenwidth = 80;
345 }
346