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