1 /* $OpenBSD: cu.c,v 1.19 2006/05/25 08:41:52 jmc Exp $ */ 2 /* $NetBSD: cu.c,v 1.5 1997/02/11 09:24:05 mrg Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1983, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)cu.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: cu.c,v 1.19 2006/05/25 08:41:52 jmc Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include "tip.h" 46 47 static void cuusage(void); 48 49 /* 50 * Botch the interface to look like cu's 51 */ 52 void 53 cumain(int argc, char *argv[]) 54 { 55 int ch, i, parity; 56 long l; 57 char *cp; 58 static char sbuf[12]; 59 60 if (argc < 2) 61 cuusage(); 62 CU = DV = NOSTR; 63 BR = DEFBR; 64 parity = 0; /* none */ 65 66 /* 67 * We want to accept -# as a speed. It's easiest to look through 68 * the arguments, replace -# with -s#, and let getopt() handle it. 69 */ 70 for (i = 1; i < argc; i++) { 71 if (argv[i][0] == '-' && 72 argv[i][1] >= '0' && argv[i][1] <= '9') { 73 asprintf(&cp, "-s%s", argv[i] + 1); 74 if (cp == NULL) { 75 fprintf(stderr, 76 "%s: cannot convert -# to -s#\n", 77 __progname); 78 exit(3); 79 } 80 argv[i] = cp; 81 } 82 } 83 84 while ((ch = getopt(argc, argv, "a:l:s:htoe")) != -1) { 85 switch (ch) { 86 case 'a': 87 CU = optarg; 88 break; 89 case 'l': 90 if (DV != NULL) { 91 fprintf(stderr, 92 "%s: cannot specificy multiple -l options\n", 93 __progname); 94 exit(3); 95 } 96 if (strchr(optarg, '/')) 97 DV = optarg; 98 else 99 asprintf(&DV, "/dev/%s", optarg); 100 break; 101 case 's': 102 l = strtol(optarg, &cp, 10); 103 if (*cp != '\0' || l < 0 || l >= INT_MAX) { 104 fprintf(stderr, "%s: unsupported speed %s\n", 105 __progname, optarg); 106 exit(3); 107 } 108 BR = (int)l; 109 break; 110 case 'h': 111 setboolean(value(LECHO), TRUE); 112 HD = TRUE; 113 break; 114 case 't': 115 HW = 1, DU = -1; 116 break; 117 case 'o': 118 if (parity != 0) 119 parity = 0; /* -e -o */ 120 else 121 parity = 1; /* odd */ 122 break; 123 case 'e': 124 if (parity != 0) 125 parity = 0; /* -o -e */ 126 else 127 parity = -1; /* even */ 128 break; 129 default: 130 cuusage(); 131 break; 132 } 133 } 134 argc -= optind; 135 argv += optind; 136 137 switch (argc) { 138 case 1: 139 PN = argv[0]; 140 break; 141 case 0: 142 break; 143 default: 144 cuusage(); 145 break; 146 } 147 148 signal(SIGINT, cleanup); 149 signal(SIGQUIT, cleanup); 150 signal(SIGHUP, cleanup); 151 signal(SIGTERM, cleanup); 152 signal(SIGCHLD, SIG_DFL); 153 154 /* 155 * The "cu" host name is used to define the 156 * attributes of the generic dialer. 157 */ 158 (void)snprintf(sbuf, sizeof(sbuf), "cu%ld", BR); 159 if ((i = hunt(sbuf)) == 0) { 160 printf("all ports busy\n"); 161 exit(3); 162 } 163 if (i == -1) { 164 printf("link down\n"); 165 (void)uu_unlock(uucplock); 166 exit(3); 167 } 168 setbuf(stdout, NULL); 169 loginit(); 170 user_uid(); 171 vinit(); 172 switch (parity) { 173 case -1: 174 setparity("even"); 175 break; 176 case 1: 177 setparity("odd"); 178 break; 179 default: 180 setparity("none"); 181 break; 182 } 183 setboolean(value(VERBOSE), FALSE); 184 if (HW && ttysetup(BR)) { 185 fprintf(stderr, "%s: unsupported speed %ld\n", 186 __progname, BR); 187 daemon_uid(); 188 (void)uu_unlock(uucplock); 189 exit(3); 190 } 191 if (con()) { 192 printf("Connect failed\n"); 193 daemon_uid(); 194 (void)uu_unlock(uucplock); 195 exit(1); 196 } 197 if (!HW && ttysetup(BR)) { 198 fprintf(stderr, "%s: unsupported speed %ld\n", 199 __progname, BR); 200 daemon_uid(); 201 (void)uu_unlock(uucplock); 202 exit(3); 203 } 204 } 205 206 static void 207 cuusage(void) 208 { 209 fprintf(stderr, "usage: cu [-ehot] [-a acu] [-l line] " 210 "[-s speed | -speed] [phone-number]\n"); 211 exit(8); 212 } 213