Annotation of src/usr.bin/mail/main.c, Revision 1.27
1.27 ! deraadt 1: /* $OpenBSD: main.c,v 1.26 2014/12/16 18:37:17 millert Exp $ */
1.5 millert 2: /* $NetBSD: main.c,v 1.7 1997/05/13 06:15:57 mikel Exp $ */
1.2 deraadt 3:
1.1 deraadt 4: /*
5: * Copyright (c) 1980, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.18 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #include "rcv.h"
34: #include <fcntl.h>
1.2 deraadt 35: #include <sys/ioctl.h>
1.1 deraadt 36: #include "extern.h"
37:
1.16 millert 38: __dead void usage(void);
39: int main(int, char **);
1.10 millert 40:
1.1 deraadt 41: /*
42: * Mail -- a mail program
43: *
44: * Startup -- interface with user.
45: */
46:
47: int
1.16 millert 48: main(int argc, char **argv)
1.1 deraadt 49: {
1.10 millert 50: int i;
1.1 deraadt 51: struct name *to, *cc, *bcc, *smopts;
52: char *subject;
53: char *ef;
54: char nosrc = 0;
1.5 millert 55: char *rc;
1.17 millert 56: extern const char version[];
1.1 deraadt 57:
58: /*
59: * Set up a reasonable environment.
60: * Figure out whether we are being run interactively,
61: * start the SIGCHLD catcher, and so forth.
62: */
1.6 millert 63: (void)signal(SIGCHLD, sigchild);
1.15 millert 64: (void)signal(SIGPIPE, SIG_IGN);
1.1 deraadt 65: if (isatty(0))
66: assign("interactive", "");
67: image = -1;
68: /*
69: * Now, determine how we are being used.
70: * We successively pick off - flags.
71: * If there is anything left, it is the base of the list
72: * of users to mail to. Argp will be set to point to the
73: * first of these users.
74: */
1.7 millert 75: ef = NULL;
1.16 millert 76: to = NULL;
77: cc = NULL;
78: bcc = NULL;
79: smopts = NULL;
1.7 millert 80: subject = NULL;
1.24 millert 81: while ((i = getopt(argc, argv, "EIN:b:c:dfins:u:v")) != -1) {
1.1 deraadt 82: switch (i) {
83: case 'u':
84: /*
85: * Next argument is person to pretend to be.
86: */
1.27 ! deraadt 87: if (strlen(optarg) >= LOGIN_NAME_MAX)
1.14 millert 88: errx(1, "username `%s' too long", optarg);
1.3 deraadt 89: unsetenv("MAIL");
1.1 deraadt 90: myname = optarg;
1.11 millert 91: uflag = 1;
1.1 deraadt 92: break;
93: case 'i':
94: /*
95: * User wants to ignore interrupts.
96: * Set the variable "ignore"
97: */
98: assign("ignore", "");
99: break;
100: case 'd':
101: debug++;
102: break;
103: case 's':
104: /*
105: * Give a subject field for sending from
106: * non terminal
107: */
108: subject = optarg;
109: break;
110: case 'f':
111: /*
112: * User is specifying file to "edit" with Mail,
113: * as opposed to reading system mailbox.
1.25 millert 114: * We read his mbox file unless another file
115: * is specified after the arguments.
116: */
117: ef = "&";
1.1 deraadt 118: break;
119: case 'n':
120: /*
121: * User doesn't want to source /usr/lib/Mail.rc
122: */
123: nosrc++;
124: break;
125: case 'N':
126: /*
127: * Avoid initial header printing.
128: */
129: assign("noheader", "");
130: break;
131: case 'v':
132: /*
133: * Send mailer verbose flag
134: */
135: assign("verbose", "");
136: break;
137: case 'I':
138: /*
139: * We're interactive
140: */
141: assign("interactive", "");
142: break;
143: case 'c':
144: /*
145: * Get Carbon Copy Recipient list
146: */
147: cc = cat(cc, nalloc(optarg, GCC));
148: break;
149: case 'b':
150: /*
151: * Get Blind Carbon Copy Recipient list
152: */
153: bcc = cat(bcc, nalloc(optarg, GBCC));
154: break;
1.21 martynas 155: case 'E':
156: /*
157: * Don't send messages with an empty body.
158: */
159: assign("skipempty", "");
160: break;
1.15 millert 161: default:
162: usage();
163: /*NOTREACHED*/
1.1 deraadt 164: }
165: }
1.25 millert 166: if (ef != NULL) {
167: /* Check for optional mailbox file name. */
168: if (optind < argc) {
169: ef = argv[optind++];
170: if (optind < argc)
171: errx(1, "Cannot give -f and people to send to");
172: }
173: } else {
1.26 millert 174: for (i = optind; argv[i]; i++)
1.25 millert 175: to = cat(to, nalloc(argv[i], GTO));
176: }
1.1 deraadt 177: /*
178: * Check for inconsistent arguments.
179: */
1.16 millert 180: if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL))
1.5 millert 181: errx(1, "You must specify direct recipients with -s, -c, or -b");
1.15 millert 182: /*
183: * Block SIGINT except where we install an explicit handler for it.
184: */
185: sigemptyset(&intset);
186: sigaddset(&intset, SIGINT);
187: (void)sigprocmask(SIG_BLOCK, &intset, NULL);
188: /*
189: * Initialization.
190: */
1.1 deraadt 191: tinit();
192: setscreensize();
193: input = stdin;
194: rcvmode = !to;
195: spreserve();
196: if (!nosrc)
197: load(_PATH_MASTER_RC);
198: /*
199: * Expand returns a savestr, but load only uses the file name
200: * for fopen, so it's safe to do this.
201: */
1.5 millert 202: if ((rc = getenv("MAILRC")) == 0)
203: rc = "~/.mailrc";
204: load(expand(rc));
1.1 deraadt 205: if (!rcvmode) {
206: mail(to, cc, bcc, smopts, subject);
207: /*
208: * why wait?
209: */
210: exit(senderr);
211: }
212: /*
213: * Ok, we are reading mail.
214: * Decide whether we are editing a mailbox or reading
215: * the system mailbox, and open up the right stuff.
216: */
1.7 millert 217: if (ef == NULL)
1.1 deraadt 218: ef = "%";
219: if (setfile(ef) < 0)
220: exit(1); /* error already reported */
221:
1.15 millert 222: if (value("quiet") == NULL)
223: (void)printf("Mail version %s. Type ? for help.\n",
224: version);
225: announce();
226: (void)fflush(stdout);
1.1 deraadt 227: commands();
1.15 millert 228: (void)ignoresig(SIGHUP, NULL, NULL);
229: (void)ignoresig(SIGINT, NULL, NULL);
230: (void)ignoresig(SIGQUIT, NULL, NULL);
1.1 deraadt 231: quit();
232: exit(0);
233: }
234:
235: /*
236: * Compute what the screen size for printing headers should be.
237: * We use the following algorithm for the height:
238: * If baud rate < 1200, use 9
239: * If baud rate = 1200, use 14
240: * If baud rate > 1200, use 24 or ws_row
241: * Width is either 80 or ws_col;
242: */
243: void
1.16 millert 244: setscreensize(void)
1.1 deraadt 245: {
246: struct termios tbuf;
247: struct winsize ws;
248: speed_t ospeed;
249:
250: if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0)
251: ws.ws_col = ws.ws_row = 0;
252: if (tcgetattr(1, &tbuf) < 0)
253: ospeed = 9600;
254: else
255: ospeed = cfgetospeed(&tbuf);
1.8 millert 256: if (ospeed < B1200)
1.1 deraadt 257: screenheight = 9;
1.8 millert 258: else if (ospeed == B1200)
1.1 deraadt 259: screenheight = 14;
260: else if (ws.ws_row != 0)
261: screenheight = ws.ws_row;
262: else
263: screenheight = 24;
264: if ((realscreenheight = ws.ws_row) == 0)
265: realscreenheight = 24;
266: if ((screenwidth = ws.ws_col) == 0)
267: screenwidth = 80;
1.15 millert 268: }
269:
270: __dead void
1.16 millert 271: usage(void)
1.15 millert 272: {
273:
1.22 jmc 274: fprintf(stderr, "usage: %s [-dEIinv] [-b list] [-c list] "
1.20 sobrado 275: "[-s subject] to-addr ...\n", __progname);
1.22 jmc 276: fprintf(stderr, " %s [-dEIiNnv] -f [file]\n", __progname);
277: fprintf(stderr, " %s [-dEIiNnv] [-u user]\n", __progname);
1.15 millert 278: exit(1);
1.1 deraadt 279: }
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