cu.c revision 1.10
1 /* $NetBSD: cu.c,v 1.10 2006/04/02 19:04:24 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 1.10 2006/04/02 19:04:24 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, parity = 0; /* 0 is no parity */ 56 static int helpme = 0; 57 char useresc = '~'; 58 static char sbuf[12], brbuf[16]; 59 extern char *optarg; 60 extern int optind; 61 62 static struct option longopts[] = { 63 { "help", no_argument, &helpme, 1 }, 64 { "escape", required_argument, NULL, 'E' }, 65 { "parity", required_argument, NULL, 'P' }, 66 { "phone", required_argument, NULL, 'c' }, 67 { "port", required_argument, NULL, 'a' }, 68 { "line", required_argument, NULL, 'l' }, 69 { "speed", required_argument, NULL, 's' }, 70 { "halfduplex", required_argument, NULL, 'h' }, 71 { NULL, 0, NULL, 0 } 72 }; 73 74 75 if (argc < 2) 76 cuusage(); 77 78 CU = NULL; 79 DV = NULL; 80 BR = DEFBR; 81 82 while((ch = getopt_long(argc, argv, 83 "E:P:a:p:c:l:s:heot0123456789", longopts, NULL)) != -1) { 84 85 if (helpme == 1) cuhelp(); 86 87 switch(ch) { 88 89 case 'E': 90 if(strlen(optarg) > 1) 91 errx(3, "only one escape character allowed"); 92 useresc = optarg[0]; 93 break; 94 case 'P': 95 if(strcmp(optarg, "even") == 0) 96 parity = -1; 97 else 98 if(strcmp(optarg, "odd") == 0) 99 parity = 1; 100 else 101 if(strcmp(optarg, "none") != 0) 102 errx(3, "bad parity setting"); 103 break; 104 case 'a': 105 case 'p': 106 CU = optarg; 107 break; 108 case 'c': 109 phonearg = 1; 110 PN = optarg; 111 break; 112 case 'l': 113 if (DV != NULL) 114 errx(3,"more than one line specified"); 115 if(strchr(optarg, '/')) 116 DV=optarg; 117 else 118 asprintf(&DV, "/dev/%s", optarg); 119 break; 120 case 's': 121 BR = atoi(optarg); 122 break; 123 case 'h': 124 setboolean(value(LECHO), TRUE); 125 HD = TRUE; 126 break; 127 case 'e': 128 if (parity != 0) 129 errx(3, "more than one parity specified"); 130 parity = -1; /* even */ 131 break; 132 case 'o': 133 if (parity != 0) 134 errx(3, "more than one parity specified"); 135 parity = 1; /* odd */ 136 break; 137 case 't': 138 HW = 1, DU = -1; 139 break; 140 case '0': case '1': case '2': case '3': case '4': 141 case '5': case '6': case '7': case '8': case '9': 142 snprintf(brbuf, sizeof(brbuf) -1, "%s%c", 143 brbuf, ch); 144 BR = atoi(brbuf); 145 break; 146 default: 147 cuusage(); 148 break; 149 } 150 } 151 152 argc -= optind; 153 argv += optind; 154 155 switch (argc) { 156 case 1: 157 if (phonearg) 158 errx(3, "more than one phone number specified"); 159 else 160 PN = argv[0]; 161 break; 162 case 0: 163 break; 164 default: 165 cuusage(); 166 break; 167 } 168 169 signal(SIGINT, cleanup); 170 signal(SIGQUIT, cleanup); 171 signal(SIGHUP, cleanup); 172 signal(SIGTERM, cleanup); 173 /* signal(SIGCHLD, SIG_DFL) */ /* XXX seems wrong */ 174 175 /* 176 * The "cu" host name is used to define the 177 * attributes of the generic dialer. 178 */ 179 (void)snprintf(sbuf, sizeof sbuf, "cu%d", (int)BR); 180 if ((i = hunt(sbuf)) == 0) { 181 errx(3,"all ports busy"); 182 } 183 if (i == -1) { 184 warnx("link down"); 185 (void)uu_unlock(uucplock); 186 exit(3); 187 } 188 setbuf(stdout, NULL); 189 loginit(); 190 user_uid(); 191 vinit(); 192 switch (parity) { 193 case -1: 194 setparity("even"); 195 break; 196 case 1: 197 setparity("odd"); 198 break; 199 case 0: 200 setparity("none"); 201 break; 202 default: 203 setparity("none"); 204 break; 205 } 206 setcharacter(value(ESCAPE), useresc); 207 setboolean(value(VERBOSE), FALSE); 208 if (HW) { 209 if (ttysetup(BR) != 0) { 210 warnx("unsupported speed %ld", BR); 211 daemon_uid(); 212 (void)uu_unlock(uucplock); 213 exit(3); 214 } 215 } 216 if (connect()) { 217 warnx("Connect failed"); 218 daemon_uid(); 219 (void)uu_unlock(uucplock); 220 exit(1); 221 } 222 if (!HW) { 223 if (ttysetup(BR) != 0) { 224 warnx("unsupported speed %ld", BR); 225 daemon_uid(); 226 (void)uu_unlock(uucplock); 227 exit(3); 228 } 229 } 230 } 231 232 static void 233 cuusage(void) 234 { 235 fprintf(stderr, "Usage: cu [options] [phone-number]\n" 236 "Use cu --help for help\n"); 237 exit(8); 238 } 239 240 static void 241 cuhelp(void) 242 { 243 fprintf(stderr, 244 "BSD tip/cu\n" 245 "Usage: cu [options] [phone-number]\n" 246 " -E,--escape char: Use this escape character\n" 247 " -a, -p,--port port: Use this port as ACU/Dialer\n" 248 " -c,--phone number: Call this number\n" 249 " -h: Echo characters locally (use \"half duplex\")\n" 250 " -e: Use even parity\n" 251 " -o: Use odd parity\n" 252 " -P,--parity {even,odd,none}: use even, odd, no parity\n" 253 " -l,-line line: Use this device (ttyXX)\n" 254 " -s,--speed,--baud speed,-#: Use this speed\n" 255 " -t: Connect via hard-wired connection\n"); 256 exit(0); 257 } 258
Indexes created Thu Sep 25 08:09:54 GMT 2025