cu.c revision 1.12
1 /* $NetBSD: cu.c,v 1.12 2006/04/02 22:19:26 tls Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <getopt.h> 34 35 #ifndef lint 36 #if 0 37 static char sccsid[] = "@(#)cu.c 8.1 (Berkeley) 6/6/93"; 38 #endif 39 __RCSID("$NetBSD: cu.c,v 1.12 2006/04/02 22:19:26 tls Exp $"); 40 #endif /* not lint */ 41 42 #include "tip.h" 43 44 static void cuhelp(void); 45 static void cuusage(void); 46 47 /* 48 * Botch the interface to look like cu's 49 */ 50 void 51 cumain(argc, argv) 52 int argc; 53 char *argv[]; 54 { 55 int i, phonearg = 0; 56 int parity = 0; /* 0 is no parity */ 57 int flow = -1; /* -1 is "tandem" ^S/^Q */ 58 static int helpme = 0, nostop = 0; 59 char useresc = '~'; 60 static char sbuf[12], brbuf[16]; 61 extern char *optarg; 62 extern int optind; 63 64 static struct option longopts[] = { 65 { "help", no_argument, &helpme, 1 }, 66 { "escape", required_argument, NULL, 'E' }, 67 { "flow", required_argument, NULL, 'F' }, 68 { "parity", required_argument, NULL, 'P' }, 69 { "phone", required_argument, NULL, 'c' }, 70 { "port", required_argument, NULL, 'a' }, 71 { "line", required_argument, NULL, 'l' }, 72 { "speed", required_argument, NULL, 's' }, 73 { "halfduplex", no_argument, NULL, 'h' }, 74 { "nostop", no_argument, &nostop, 1 }, 75 { NULL, 0, NULL, 0 } 76 }; 77 78 79 if (argc < 2) 80 cuusage(); 81 82 CU = NULL; 83 DV = NULL; 84 BR = DEFBR; 85 86 while((ch = getopt_long(argc, argv, 87 "E:F:P:a:p:c:l:s:heot0123456789", longopts, NULL)) != -1) { 88 89 if (helpme == 1) cuhelp(); 90 91 switch(ch) { 92 93 case 'E': 94 if(strlen(optarg) > 1) 95 errx(3, "only one escape character allowed"); 96 useresc = optarg[0]; 97 break; 98 case 'F': 99 if (strncmp(optarg, "hard", sizeof("hard") - 1 ) == 0) 100 flow = 1; 101 else 102 if (strncmp(optarg, "soft", 103 sizeof("soft") - 1 ) == 0) 104 flow = -1; 105 else 106 if(strcmp(optarg, "none") != 0) 107 errx(3, "bad flow setting"); 108 else 109 flow = 0; 110 break; 111 case 'P': 112 if(strcmp(optarg, "even") == 0) 113 parity = -1; 114 else 115 if(strcmp(optarg, "odd") == 0) 116 parity = 1; 117 else 118 if(strcmp(optarg, "none") != 0) 119 errx(3, "bad parity setting"); 120 else 121 parity = 0; 122 break; 123 case 'a': 124 case 'p': 125 CU = optarg; 126 break; 127 case 'c': 128 phonearg = 1; 129 PN = optarg; 130 break; 131 case 'l': 132 if (DV != NULL) 133 errx(3,"more than one line specified"); 134 if(strchr(optarg, '/')) 135 DV=optarg; 136 else 137 asprintf(&DV, "/dev/%s", optarg); 138 break; 139 case 's': 140 BR = atoi(optarg); 141 break; 142 case 'h': 143 HD = TRUE; 144 break; 145 case 'e': 146 if (parity != 0) 147 errx(3, "more than one parity specified"); 148 parity = -1; /* even */ 149 break; 150 case 'o': 151 if (parity != 0) 152 errx(3, "more than one parity specified"); 153 parity = 1; /* odd */ 154 break; 155 case 't': 156 HW = 1, DU = -1; 157 break; 158 case '0': case '1': case '2': case '3': case '4': 159 case '5': case '6': case '7': case '8': case '9': 160 snprintf(brbuf, sizeof(brbuf) -1, "%s%c", 161 brbuf, ch); 162 BR = atoi(brbuf); 163 break; 164 default: 165 if (nostop == 0) 166 cuusage(); 167 break; 168 } 169 } 170 171 argc -= optind; 172 argv += optind; 173 174 switch (argc) { 175 case 1: 176 if (phonearg) 177 errx(3, "more than one phone number specified"); 178 else 179 PN = argv[0]; 180 break; 181 case 0: 182 break; 183 default: 184 cuusage(); 185 break; 186 } 187 188 signal(SIGINT, cleanup); 189 signal(SIGQUIT, cleanup); 190 signal(SIGHUP, cleanup); 191 signal(SIGTERM, cleanup); 192 /* signal(SIGCHLD, SIG_DFL) */ /* XXX seems wrong */ 193 194 /* 195 * The "cu" host name is used to define the 196 * attributes of the generic dialer. 197 */ 198 (void)snprintf(sbuf, sizeof sbuf, "cu%d", (int)BR); 199 if ((i = hunt(sbuf)) == 0) { 200 errx(3,"all ports busy"); 201 } 202 if (i == -1) { 203 warnx("link down"); 204 (void)uu_unlock(uucplock); 205 exit(3); 206 } 207 setbuf(stdout, NULL); 208 #ifdef ACULOG 209 loginit(); 210 #endif 211 user_uid(); 212 vinit(); 213 switch (parity) { 214 case -1: 215 setparity("even"); 216 break; 217 case 1: 218 setparity("odd"); 219 break; 220 case 0: 221 setparity("none"); 222 break; 223 default: 224 setparity("none"); 225 break; 226 } 227 228 switch (flow) { 229 case -1: 230 if(nostop) { 231 setboolean(value(TAND), FALSE); 232 setboolean(value(HARDWAREFLOW), FALSE); 233 } 234 else { 235 setboolean(value(TAND), TRUE); 236 setboolean(value(HARDWAREFLOW), FALSE); 237 } 238 break; 239 case 1: 240 setboolean(value(TAND), FALSE); 241 setboolean(value(HARDWAREFLOW), TRUE); 242 break; 243 case 0: 244 default: 245 setboolean(value(TAND), FALSE); 246 setboolean(value(HARDWAREFLOW), FALSE); 247 break; 248 } 249 setcharacter(value(ESCAPE), useresc); 250 setboolean(value(VERBOSE), FALSE); 251 if (HD) 252 setboolean(value(LECHO), TRUE); 253 if (HW) { 254 if (ttysetup(BR) != 0) { 255 warnx("unsupported speed %ld", BR); 256 daemon_uid(); 257 (void)uu_unlock(uucplock); 258 exit(3); 259 } 260 } 261 if (connect()) { 262 warnx("Connect failed"); 263 daemon_uid(); 264 (void)uu_unlock(uucplock); 265 exit(1); 266 } 267 if (!HW) { 268 if (ttysetup(BR) != 0) { 269 warnx("unsupported speed %ld", BR); 270 daemon_uid(); 271 (void)uu_unlock(uucplock); 272 exit(3); 273 } 274 } 275 } 276 277 static void 278 cuusage(void) 279 { 280 fprintf(stderr, "Usage: cu [options] [phone-number]\n" 281 "Use cu --help for help\n"); 282 exit(8); 283 } 284 285 static void 286 cuhelp(void) 287 { 288 fprintf(stderr, 289 "BSD tip/cu\n" 290 "Usage: cu [options] [phone-number]\n" 291 " -E,--escape char: Use this escape character\n" 292 " -F,--flow {hard,soft,none}: Use RTS/CTS, ^S/^Q, no flow control\n" 293 " --nostop: Do not use software flow control\n" 294 " -a, -p,--port port: Use this port as ACU/Dialer\n" 295 " -c,--phone number: Call this number\n" 296 " -h,--halfduplex: Echo characters locally (use \"half duplex\")\n" 297 " -e: Use even parity\n" 298 " -o: Use odd parity\n" 299 " -P,--parity {even,odd,none}: use even, odd, no parity\n" 300 " -l,-line line: Use this device (ttyXX)\n" 301 " -s,--speed,--baud speed,-#: Use this speed\n" 302 " -t: Connect via hard-wired connection\n"); 303 exit(0); 304 } 305
Indexes created Thu Sep 25 02:09:54 GMT 2025