1 /* $OpenBSD: main.c,v 1.13 2001/09/07 01:19:15 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 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 char sccsid[] = "@(#)main.c 8.2 (Berkeley) 4/20/95"; 46 #else 47 static char rcsid[] = "$OpenBSD: main.c,v 1.13 2001/09/07 01:19:15 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 int main __P((int, char **)); 57 58 /* 59 * Mail -- a mail program 60 * 61 * Startup -- interface with user. 62 */ 63 64 sigjmp_buf hdrjmp; 65 66 int 67 main(argc, argv) 68 int argc; 69 char *argv[]; 70 { 71 int i; 72 struct name *to, *cc, *bcc, *smopts; 73 char *subject; 74 char *ef; 75 char nosrc = 0; 76 sig_t prevint; 77 char *rc; 78 79 /* 80 * Set up a reasonable environment. 81 * Figure out whether we are being run interactively, 82 * start the SIGCHLD catcher, and so forth. 83 */ 84 (void)signal(SIGCHLD, sigchild); 85 if (isatty(0)) 86 assign("interactive", ""); 87 image = -1; 88 /* 89 * Now, determine how we are being used. 90 * We successively pick off - flags. 91 * If there is anything left, it is the base of the list 92 * of users to mail to. Argp will be set to point to the 93 * first of these users. 94 */ 95 ef = NULL; 96 to = NIL; 97 cc = NIL; 98 bcc = NIL; 99 smopts = NIL; 100 subject = NULL; 101 while ((i = getopt(argc, argv, "INT:b:c:dfins:u:v")) != -1) { 102 switch (i) { 103 case 'T': 104 /* 105 * Next argument is temp file to write which 106 * articles have been read/deleted for netnews. 107 */ 108 Tflag = optarg; 109 if ((i = creat(Tflag, 0600)) < 0) 110 err(1, "%s", Tflag); 111 (void)close(i); 112 break; 113 case 'u': 114 /* 115 * Next argument is person to pretend to be. 116 */ 117 if (strlen(optarg) >= MAXLOGNAME) 118 errx(1, "username `%s' too long"); 119 unsetenv("MAIL"); 120 myname = optarg; 121 uflag = 1; 122 break; 123 case 'i': 124 /* 125 * User wants to ignore interrupts. 126 * Set the variable "ignore" 127 */ 128 assign("ignore", ""); 129 break; 130 case 'd': 131 debug++; 132 break; 133 case 's': 134 /* 135 * Give a subject field for sending from 136 * non terminal 137 */ 138 subject = optarg; 139 break; 140 case 'f': 141 /* 142 * User is specifying file to "edit" with Mail, 143 * as opposed to reading system mailbox. 144 * If no argument is given after -f, we read his 145 * mbox file. 146 * 147 * getopt() can't handle optional arguments, so here 148 * is an ugly hack to get around it. 149 */ 150 if ((argv[optind]) && (argv[optind][0] != '-')) 151 ef = argv[optind++]; 152 else 153 ef = "&"; 154 break; 155 case 'n': 156 /* 157 * User doesn't want to source /usr/lib/Mail.rc 158 */ 159 nosrc++; 160 break; 161 case 'N': 162 /* 163 * Avoid initial header printing. 164 */ 165 assign("noheader", ""); 166 break; 167 case 'v': 168 /* 169 * Send mailer verbose flag 170 */ 171 assign("verbose", ""); 172 break; 173 case 'I': 174 /* 175 * We're interactive 176 */ 177 assign("interactive", ""); 178 break; 179 case 'c': 180 /* 181 * Get Carbon Copy Recipient list 182 */ 183 cc = cat(cc, nalloc(optarg, GCC)); 184 break; 185 case 'b': 186 /* 187 * Get Blind Carbon Copy Recipient list 188 */ 189 bcc = cat(bcc, nalloc(optarg, GBCC)); 190 break; 191 case '?': 192 fprintf(stderr, "\ 193 Usage: %s [-iInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\ 194 [- sendmail-options ...]\n\ 195 %s [-iInNv] -f [name]\n\ 196 %s [-iInNv] [-u user]\n", __progname, __progname, __progname); 197 exit(1); 198 } 199 } 200 for (i = optind; (argv[i]) && (*argv[i] != '-'); i++) 201 to = cat(to, nalloc(argv[i], GTO)); 202 for (; argv[i]; i++) 203 smopts = cat(smopts, nalloc(argv[i], 0)); 204 /* 205 * Check for inconsistent arguments. 206 */ 207 if (to == NIL && (subject != NULL || cc != NIL || bcc != NIL)) 208 errx(1, "You must specify direct recipients with -s, -c, or -b"); 209 if (ef != NULL && to != NIL) 210 errx(1, "Cannot give -f and people to send to"); 211 tinit(); 212 setscreensize(); 213 input = stdin; 214 rcvmode = !to; 215 spreserve(); 216 if (!nosrc) 217 load(_PATH_MASTER_RC); 218 /* 219 * Expand returns a savestr, but load only uses the file name 220 * for fopen, so it's safe to do this. 221 */ 222 if ((rc = getenv("MAILRC")) == 0) 223 rc = "~/.mailrc"; 224 load(expand(rc)); 225 if (!rcvmode) { 226 mail(to, cc, bcc, smopts, subject); 227 /* 228 * why wait? 229 */ 230 exit(senderr); 231 } 232 /* 233 * Ok, we are reading mail. 234 * Decide whether we are editing a mailbox or reading 235 * the system mailbox, and open up the right stuff. 236 */ 237 if (ef == NULL) 238 ef = "%"; 239 if (setfile(ef) < 0) 240 exit(1); /* error already reported */ 241 if (sigsetjmp(hdrjmp, 1) == 0) { 242 extern char *version; 243 244 if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN) 245 (void)signal(SIGINT, hdrstop); 246 if (value("quiet") == NULL) 247 (void)printf("Mail version %s. Type ? for help.\n", 248 version); 249 announce(); 250 (void)fflush(stdout); 251 (void)signal(SIGINT, prevint); 252 } 253 commands(); 254 (void)signal(SIGHUP, SIG_IGN); 255 (void)signal(SIGINT, SIG_IGN); 256 (void)signal(SIGQUIT, SIG_IGN); 257 quit(); 258 exit(0); 259 } 260 261 /* 262 * Interrupt printing of the headers. 263 */ 264 void 265 hdrstop(signo) 266 int signo; 267 { 268 269 fflush(stdout); 270 fputs("\nInterrupt\n", stderr); 271 siglongjmp(hdrjmp, 1); 272 } 273 274 /* 275 * Compute what the screen size for printing headers should be. 276 * We use the following algorithm for the height: 277 * If baud rate < 1200, use 9 278 * If baud rate = 1200, use 14 279 * If baud rate > 1200, use 24 or ws_row 280 * Width is either 80 or ws_col; 281 */ 282 void 283 setscreensize() 284 { 285 struct termios tbuf; 286 struct winsize ws; 287 speed_t ospeed; 288 289 if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0) 290 ws.ws_col = ws.ws_row = 0; 291 if (tcgetattr(1, &tbuf) < 0) 292 ospeed = 9600; 293 else 294 ospeed = cfgetospeed(&tbuf); 295 if (ospeed < B1200) 296 screenheight = 9; 297 else if (ospeed == B1200) 298 screenheight = 14; 299 else if (ws.ws_row != 0) 300 screenheight = ws.ws_row; 301 else 302 screenheight = 24; 303 if ((realscreenheight = ws.ws_row) == 0) 304 realscreenheight = 24; 305 if ((screenwidth = ws.ws_col) == 0) 306 screenwidth = 80; 307 } 308