1 /* $OpenBSD: main.c,v 1.20 2007/08/06 19:16:06 sobrado Exp $ */ 2 /* $NetBSD: main.c,v 1.7 1997/05/13 06:15:57 mikel Exp $ */ 3 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. 16 * 3. Neither the name of the University nor the names of its contributors 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 #ifndef lint 34 static const char copyright[] = 35 "@(#) Copyright (c) 1980, 1993\n\ 36 The Regents of the University of California. All rights reserved.\n"; 37 #endif /* not lint */ 38 39 #ifndef lint 40 #if 0 41 static const char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95"; 42 #else 43 static const char rcsid[] = "$OpenBSD: main.c,v 1.20 2007/08/06 19:16:06 sobrado Exp $"; 44 #endif 45 #endif /* not lint */ 46 47 #include "rcv.h" 48 #include <fcntl.h> 49 #include <sys/ioctl.h> 50 #include "extern.h" 51 52 __dead void usage(void); 53 int main(int, char **); 54 55 /* 56 * Mail -- a mail program 57 * 58 * Startup -- interface with user. 59 */ 60 61 int 62 main(int argc, char **argv) 63 { 64 int i; 65 struct name *to, *cc, *bcc, *smopts; 66 char *subject; 67 char *ef; 68 char nosrc = 0; 69 char *rc; 70 extern const char version[]; 71 72 /* 73 * Set up a reasonable environment. 74 * Figure out whether we are being run interactively, 75 * start the SIGCHLD catcher, and so forth. 76 */ 77 (void)signal(SIGCHLD, sigchild); 78 (void)signal(SIGPIPE, SIG_IGN); 79 if (isatty(0)) 80 assign("interactive", ""); 81 image = -1; 82 /* 83 * Now, determine how we are being used. 84 * We successively pick off - flags. 85 * If there is anything left, it is the base of the list 86 * of users to mail to. Argp will be set to point to the 87 * first of these users. 88 */ 89 ef = NULL; 90 to = NULL; 91 cc = NULL; 92 bcc = NULL; 93 smopts = NULL; 94 subject = NULL; 95 while ((i = getopt(argc, argv, "INT:b:c:dfins:u:v")) != -1) { 96 switch (i) { 97 case 'T': 98 /* 99 * Next argument is temp file to write which 100 * articles have been read/deleted for netnews. 101 */ 102 Tflag = optarg; 103 if ((i = creat(Tflag, 0600)) < 0) 104 err(1, "%s", Tflag); 105 (void)close(i); 106 break; 107 case 'u': 108 /* 109 * Next argument is person to pretend to be. 110 */ 111 if (strlen(optarg) >= MAXLOGNAME) 112 errx(1, "username `%s' too long", optarg); 113 unsetenv("MAIL"); 114 myname = optarg; 115 uflag = 1; 116 break; 117 case 'i': 118 /* 119 * User wants to ignore interrupts. 120 * Set the variable "ignore" 121 */ 122 assign("ignore", ""); 123 break; 124 case 'd': 125 debug++; 126 break; 127 case 's': 128 /* 129 * Give a subject field for sending from 130 * non terminal 131 */ 132 subject = optarg; 133 break; 134 case 'f': 135 /* 136 * User is specifying file to "edit" with Mail, 137 * as opposed to reading system mailbox. 138 * If no argument is given after -f, we read his 139 * mbox file. 140 * 141 * getopt() can't handle optional arguments, so here 142 * is an ugly hack to get around it. 143 */ 144 if ((argv[optind]) && (argv[optind][0] != '-')) 145 ef = argv[optind++]; 146 else 147 ef = "&"; 148 break; 149 case 'n': 150 /* 151 * User doesn't want to source /usr/lib/Mail.rc 152 */ 153 nosrc++; 154 break; 155 case 'N': 156 /* 157 * Avoid initial header printing. 158 */ 159 assign("noheader", ""); 160 break; 161 case 'v': 162 /* 163 * Send mailer verbose flag 164 */ 165 assign("verbose", ""); 166 break; 167 case 'I': 168 /* 169 * We're interactive 170 */ 171 assign("interactive", ""); 172 break; 173 case 'c': 174 /* 175 * Get Carbon Copy Recipient list 176 */ 177 cc = cat(cc, nalloc(optarg, GCC)); 178 break; 179 case 'b': 180 /* 181 * Get Blind Carbon Copy Recipient list 182 */ 183 bcc = cat(bcc, nalloc(optarg, GBCC)); 184 break; 185 default: 186 usage(); 187 /*NOTREACHED*/ 188 } 189 } 190 for (i = optind; (argv[i]) && (*argv[i] != '-'); i++) 191 to = cat(to, nalloc(argv[i], GTO)); 192 for (; argv[i]; i++) 193 smopts = cat(smopts, nalloc(argv[i], 0)); 194 /* 195 * Check for inconsistent arguments. 196 */ 197 if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL)) 198 errx(1, "You must specify direct recipients with -s, -c, or -b"); 199 if (ef != NULL && to != NULL) 200 errx(1, "Cannot give -f and people to send to"); 201 /* 202 * Block SIGINT except where we install an explicit handler for it. 203 */ 204 sigemptyset(&intset); 205 sigaddset(&intset, SIGINT); 206 (void)sigprocmask(SIG_BLOCK, &intset, NULL); 207 /* 208 * Initialization. 209 */ 210 tinit(); 211 setscreensize(); 212 input = stdin; 213 rcvmode = !to; 214 spreserve(); 215 if (!nosrc) 216 load(_PATH_MASTER_RC); 217 /* 218 * Expand returns a savestr, but load only uses the file name 219 * for fopen, so it's safe to do this. 220 */ 221 if ((rc = getenv("MAILRC")) == 0) 222 rc = "~/.mailrc"; 223 load(expand(rc)); 224 if (!rcvmode) { 225 mail(to, cc, bcc, smopts, subject); 226 /* 227 * why wait? 228 */ 229 exit(senderr); 230 } 231 /* 232 * Ok, we are reading mail. 233 * Decide whether we are editing a mailbox or reading 234 * the system mailbox, and open up the right stuff. 235 */ 236 if (ef == NULL) 237 ef = "%"; 238 if (setfile(ef) < 0) 239 exit(1); /* error already reported */ 240 241 if (value("quiet") == NULL) 242 (void)printf("Mail version %s. Type ? for help.\n", 243 version); 244 announce(); 245 (void)fflush(stdout); 246 commands(); 247 (void)ignoresig(SIGHUP, NULL, NULL); 248 (void)ignoresig(SIGINT, NULL, NULL); 249 (void)ignoresig(SIGQUIT, NULL, NULL); 250 quit(); 251 exit(0); 252 } 253 254 /* 255 * Compute what the screen size for printing headers should be. 256 * We use the following algorithm for the height: 257 * If baud rate < 1200, use 9 258 * If baud rate = 1200, use 14 259 * If baud rate > 1200, use 24 or ws_row 260 * Width is either 80 or ws_col; 261 */ 262 void 263 setscreensize(void) 264 { 265 struct termios tbuf; 266 struct winsize ws; 267 speed_t ospeed; 268 269 if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0) 270 ws.ws_col = ws.ws_row = 0; 271 if (tcgetattr(1, &tbuf) < 0) 272 ospeed = 9600; 273 else 274 ospeed = cfgetospeed(&tbuf); 275 if (ospeed < B1200) 276 screenheight = 9; 277 else if (ospeed == B1200) 278 screenheight = 14; 279 else if (ws.ws_row != 0) 280 screenheight = ws.ws_row; 281 else 282 screenheight = 24; 283 if ((realscreenheight = ws.ws_row) == 0) 284 realscreenheight = 24; 285 if ((screenwidth = ws.ws_col) == 0) 286 screenwidth = 80; 287 } 288 289 __dead void 290 usage(void) 291 { 292 293 fprintf(stderr, "usage: %s [-Iinv] [-b list] [-c list] " 294 "[-s subject] to-addr ...\n", __progname); 295 fprintf(stderr, " %*s [-sendmail-options ...]\n", 296 (int)strlen(__progname), ""); 297 fprintf(stderr, " %s [-IiNnv] -f [name]\n", __progname); 298 fprintf(stderr, " %s [-IiNnv] [-u user]\n", __progname); 299 exit(1); 300 } 301