1 /* $OpenBSD: main.c,v 1.31 2015/02/08 23:40:34 deraadt 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 #include "rcv.h" 34 #include <fcntl.h> 35 #include <sys/ioctl.h> 36 #include "extern.h" 37 38 __dead void usage(void); 39 int main(int, char **); 40 41 /* 42 * Mail -- a mail program 43 * 44 * Startup -- interface with user. 45 */ 46 47 int 48 main(int argc, char **argv) 49 { 50 int i; 51 struct name *to, *cc, *bcc, *smopts; 52 char *fromaddr; 53 char *subject; 54 char *ef; 55 char nosrc = 0; 56 char *rc; 57 extern const char version[]; 58 59 /* 60 * Set up a reasonable environment. 61 * Figure out whether we are being run interactively, 62 * start the SIGCHLD catcher, and so forth. 63 */ 64 (void)signal(SIGCHLD, sigchild); 65 (void)signal(SIGPIPE, SIG_IGN); 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 fromaddr = NULL; 82 subject = NULL; 83 while ((i = getopt(argc, argv, "EINb:c:dfinr:s:u:v")) != -1) { 84 switch (i) { 85 case 'u': 86 /* 87 * Next argument is person to pretend to be. 88 */ 89 if (strlen(optarg) >= LOGIN_NAME_MAX) 90 errx(1, "username `%s' too long", optarg); 91 unsetenv("MAIL"); 92 myname = optarg; 93 uflag = 1; 94 break; 95 case 'i': 96 /* 97 * User wants to ignore interrupts. 98 * Set the variable "ignore" 99 */ 100 assign("ignore", ""); 101 break; 102 case 'd': 103 debug++; 104 break; 105 case 'r': 106 /* 107 * Set From: address 108 */ 109 fromaddr = optarg; 110 break; 111 case 's': 112 /* 113 * Give a subject field for sending from 114 * non terminal 115 */ 116 subject = optarg; 117 break; 118 case 'f': 119 /* 120 * User is specifying file to "edit" with Mail, 121 * as opposed to reading system mailbox. 122 * We read his mbox file unless another file 123 * is specified after the arguments. 124 */ 125 ef = "&"; 126 break; 127 case 'n': 128 /* 129 * User doesn't want to source /usr/lib/Mail.rc 130 */ 131 nosrc = 1; 132 break; 133 case 'N': 134 /* 135 * Avoid initial header printing. 136 */ 137 assign("noheader", ""); 138 break; 139 case 'v': 140 /* 141 * Send mailer verbose flag 142 */ 143 assign("verbose", ""); 144 break; 145 case 'I': 146 /* 147 * We're interactive 148 */ 149 assign("interactive", ""); 150 break; 151 case 'c': 152 /* 153 * Get Carbon Copy Recipient list 154 */ 155 cc = cat(cc, nalloc(optarg, GCC)); 156 break; 157 case 'b': 158 /* 159 * Get Blind Carbon Copy Recipient list 160 */ 161 bcc = cat(bcc, nalloc(optarg, GBCC)); 162 break; 163 case 'E': 164 /* 165 * Don't send messages with an empty body. 166 */ 167 assign("skipempty", ""); 168 break; 169 default: 170 usage(); 171 /*NOTREACHED*/ 172 } 173 } 174 if (ef != NULL) { 175 /* Check for optional mailbox file name. */ 176 if (optind < argc) { 177 ef = argv[optind++]; 178 if (optind < argc) 179 errx(1, "Cannot give -f and people to send to"); 180 } 181 } else { 182 for (i = optind; argv[i]; i++) 183 to = cat(to, nalloc(argv[i], GTO)); 184 } 185 /* 186 * Check for inconsistent arguments. 187 */ 188 if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL || 189 fromaddr != NULL)) 190 errx(1, "You must specify direct recipients with -s, -c, -b, " 191 "or -r"); 192 /* 193 * Block SIGINT except where we install an explicit handler for it. 194 */ 195 sigemptyset(&intset); 196 sigaddset(&intset, SIGINT); 197 (void)sigprocmask(SIG_BLOCK, &intset, NULL); 198 /* 199 * Initialization. 200 */ 201 tinit(); 202 setscreensize(); 203 input = stdin; 204 rcvmode = !to; 205 spreserve(); 206 if (!nosrc) 207 load(_PATH_MASTER_RC); 208 /* 209 * Expand returns a savestr, but load only uses the file name 210 * for fopen, so it's safe to do this. 211 */ 212 if ((rc = getenv("MAILRC")) == 0) 213 rc = "~/.mailrc"; 214 load(expand(rc)); 215 if (!rcvmode) { 216 mail(to, cc, bcc, smopts, fromaddr, subject); 217 /* 218 * why wait? 219 */ 220 exit(senderr); 221 } 222 /* 223 * Ok, we are reading mail. 224 * Decide whether we are editing a mailbox or reading 225 * the system mailbox, and open up the right stuff. 226 */ 227 if (ef == NULL) 228 ef = "%"; 229 if (setfile(ef) < 0) 230 exit(1); /* error already reported */ 231 232 if (value("quiet") == NULL) 233 (void)printf("Mail version %s. Type ? for help.\n", 234 version); 235 announce(); 236 (void)fflush(stdout); 237 commands(); 238 (void)ignoresig(SIGHUP, NULL, NULL); 239 (void)ignoresig(SIGINT, NULL, NULL); 240 (void)ignoresig(SIGQUIT, NULL, NULL); 241 quit(); 242 exit(0); 243 } 244 245 /* 246 * Compute what the screen size for printing headers should be. 247 * We use the following algorithm for the height: 248 * If baud rate < 1200, use 9 249 * If baud rate = 1200, use 14 250 * If baud rate > 1200, use 24 or ws_row 251 * Width is either 80 or ws_col; 252 */ 253 void 254 setscreensize(void) 255 { 256 struct termios tbuf; 257 struct winsize ws; 258 speed_t ospeed; 259 260 if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0) 261 ws.ws_col = ws.ws_row = 0; 262 if (tcgetattr(1, &tbuf) < 0) 263 ospeed = 9600; 264 else 265 ospeed = cfgetospeed(&tbuf); 266 if (ospeed < B1200) 267 screenheight = 9; 268 else if (ospeed == B1200) 269 screenheight = 14; 270 else if (ws.ws_row != 0) 271 screenheight = ws.ws_row; 272 else 273 screenheight = 24; 274 if ((realscreenheight = ws.ws_row) == 0) 275 realscreenheight = 24; 276 if ((screenwidth = ws.ws_col) == 0) 277 screenwidth = 80; 278 } 279 280 __dead void 281 usage(void) 282 { 283 284 fprintf(stderr, "usage: %s [-dEIinv] [-b list] [-c list] " 285 "[-r from-addr] [-s subject] to-addr ...\n", __progname); 286 fprintf(stderr, " %s [-dEIiNnv] -f [file]\n", __progname); 287 fprintf(stderr, " %s [-dEIiNnv] [-u user]\n", __progname); 288 exit(1); 289 } 290