1 /* $OpenBSD: main.c,v 1.17 2001/11/21 15:28:25 millert 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1980, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static const char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95"; 46 #else 47 static const char rcsid[] = "$OpenBSD: main.c,v 1.17 2001/11/21 15:28:25 millert Exp $"; 48 #endif 49 #endif /* not lint */ 50 51 #include "rcv.h" 52 #include <fcntl.h> 53 #include <sys/ioctl.h> 54 #include "extern.h" 55 56 __dead void usage(void); 57 int main(int, char **); 58 59 /* 60 * Mail -- a mail program 61 * 62 * Startup -- interface with user. 63 */ 64 65 int 66 main(int argc, char **argv) 67 { 68 int i; 69 struct name *to, *cc, *bcc, *smopts; 70 char *subject; 71 char *ef; 72 char nosrc = 0; 73 char *rc; 74 extern const char version[]; 75 76 /* 77 * Set up a reasonable environment. 78 * Figure out whether we are being run interactively, 79 * start the SIGCHLD catcher, and so forth. 80 */ 81 (void)signal(SIGCHLD, sigchild); 82 (void)signal(SIGPIPE, SIG_IGN); 83 if (isatty(0)) 84 assign("interactive", ""); 85 image = -1; 86 /* 87 * Now, determine how we are being used. 88 * We successively pick off - flags. 89 * If there is anything left, it is the base of the list 90 * of users to mail to. Argp will be set to point to the 91 * first of these users. 92 */ 93 ef = NULL; 94 to = NULL; 95 cc = NULL; 96 bcc = NULL; 97 smopts = NULL; 98 subject = NULL; 99 while ((i = getopt(argc, argv, "INT:b:c:dfins:u:v")) != -1) { 100 switch (i) { 101 case 'T': 102 /* 103 * Next argument is temp file to write which 104 * articles have been read/deleted for netnews. 105 */ 106 Tflag = optarg; 107 if ((i = creat(Tflag, 0600)) < 0) 108 err(1, "%s", Tflag); 109 (void)close(i); 110 break; 111 case 'u': 112 /* 113 * Next argument is person to pretend to be. 114 */ 115 if (strlen(optarg) >= MAXLOGNAME) 116 errx(1, "username `%s' too long", optarg); 117 unsetenv("MAIL"); 118 myname = optarg; 119 uflag = 1; 120 break; 121 case 'i': 122 /* 123 * User wants to ignore interrupts. 124 * Set the variable "ignore" 125 */ 126 assign("ignore", ""); 127 break; 128 case 'd': 129 debug++; 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]) && (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 default: 190 usage(); 191 /*NOTREACHED*/ 192 } 193 } 194 for (i = optind; (argv[i]) && (*argv[i] != '-'); i++) 195 to = cat(to, nalloc(argv[i], GTO)); 196 for (; argv[i]; i++) 197 smopts = cat(smopts, nalloc(argv[i], 0)); 198 /* 199 * Check for inconsistent arguments. 200 */ 201 if (to == NULL && (subject != NULL || cc != NULL || bcc != NULL)) 202 errx(1, "You must specify direct recipients with -s, -c, or -b"); 203 if (ef != NULL && to != NULL) 204 errx(1, "Cannot give -f and people to send to"); 205 /* 206 * Block SIGINT except where we install an explicit handler for it. 207 */ 208 sigemptyset(&intset); 209 sigaddset(&intset, SIGINT); 210 (void)sigprocmask(SIG_BLOCK, &intset, NULL); 211 /* 212 * Initialization. 213 */ 214 tinit(); 215 setscreensize(); 216 input = stdin; 217 rcvmode = !to; 218 spreserve(); 219 if (!nosrc) 220 load(_PATH_MASTER_RC); 221 /* 222 * Expand returns a savestr, but load only uses the file name 223 * for fopen, so it's safe to do this. 224 */ 225 if ((rc = getenv("MAILRC")) == 0) 226 rc = "~/.mailrc"; 227 load(expand(rc)); 228 if (!rcvmode) { 229 mail(to, cc, bcc, smopts, subject); 230 /* 231 * why wait? 232 */ 233 exit(senderr); 234 } 235 /* 236 * Ok, we are reading mail. 237 * Decide whether we are editing a mailbox or reading 238 * the system mailbox, and open up the right stuff. 239 */ 240 if (ef == NULL) 241 ef = "%"; 242 if (setfile(ef) < 0) 243 exit(1); /* error already reported */ 244 245 if (value("quiet") == NULL) 246 (void)printf("Mail version %s. Type ? for help.\n", 247 version); 248 announce(); 249 (void)fflush(stdout); 250 commands(); 251 (void)ignoresig(SIGHUP, NULL, NULL); 252 (void)ignoresig(SIGINT, NULL, NULL); 253 (void)ignoresig(SIGQUIT, NULL, NULL); 254 quit(); 255 exit(0); 256 } 257 258 /* 259 * Compute what the screen size for printing headers should be. 260 * We use the following algorithm for the height: 261 * If baud rate < 1200, use 9 262 * If baud rate = 1200, use 14 263 * If baud rate > 1200, use 24 or ws_row 264 * Width is either 80 or ws_col; 265 */ 266 void 267 setscreensize(void) 268 { 269 struct termios tbuf; 270 struct winsize ws; 271 speed_t ospeed; 272 273 if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0) 274 ws.ws_col = ws.ws_row = 0; 275 if (tcgetattr(1, &tbuf) < 0) 276 ospeed = 9600; 277 else 278 ospeed = cfgetospeed(&tbuf); 279 if (ospeed < B1200) 280 screenheight = 9; 281 else if (ospeed == B1200) 282 screenheight = 14; 283 else if (ws.ws_row != 0) 284 screenheight = ws.ws_row; 285 else 286 screenheight = 24; 287 if ((realscreenheight = ws.ws_row) == 0) 288 realscreenheight = 24; 289 if ((screenwidth = ws.ws_col) == 0) 290 screenwidth = 80; 291 } 292 293 __dead void 294 usage(void) 295 { 296 297 fprintf(stderr, "usage: %s [-iInv] [-s subject] [-c cc-addr] " 298 "[-b bcc-addr] to-addr ...\n", __progname); 299 fprintf(stderr, " %*s [- sendmail-options ...]\n", 300 (int)strlen(__progname), ""); 301 fprintf(stderr, " %s [-iInNv] -f [name]\n", __progname); 302 fprintf(stderr, " %s [-iInNv] [-u user]\n", __progname); 303 exit(1); 304 } 305