1 /* $OpenBSD: acu.c,v 1.12 2006/03/17 14:43:06 moritz Exp $ */ 2 /* $NetBSD: acu.c,v 1.4 1996/12/29 10:34:03 cgd 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[] = "@(#)acu.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: acu.c,v 1.12 2006/03/17 14:43:06 moritz Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include "tip.h" 46 47 static acu_t *acu = NOACU; 48 static int conflag; 49 static void acuabort(int); 50 static acu_t *acutype(char *); 51 static jmp_buf jmpbuf; 52 /* 53 * Establish connection for tip 54 * 55 * If DU is true, we should dial an ACU whose type is AT. 56 * The phone numbers are in PN, and the call unit is in CU. 57 * 58 * If the PN is an '@', then we consult the PHONES file for 59 * the phone numbers. This file is /etc/phones, unless overridden 60 * by an exported shell variable. 61 * 62 * The data base files must be in the format: 63 * host-name[ \t]*phone-number 64 * with the possibility of multiple phone numbers 65 * for a single host acting as a rotary (in the order 66 * found in the file). 67 */ 68 char * 69 con(void) 70 { 71 char *cp = PN; 72 char *phnum, string[256]; 73 FILE *fd; 74 volatile int tried = 0; 75 76 if (!DU) { /* regular connect message */ 77 if (CM != NOSTR) 78 parwrite(FD, CM, size(CM)); 79 logent(value(HOST), "", DV, "call completed"); 80 return (NOSTR); 81 } 82 /* 83 * @ =>'s use data base in PHONES environment variable 84 * otherwise, use /etc/phones 85 */ 86 signal(SIGINT, acuabort); 87 signal(SIGQUIT, acuabort); 88 if (setjmp(jmpbuf)) { 89 signal(SIGINT, SIG_IGN); 90 signal(SIGQUIT, SIG_IGN); 91 printf("\ncall aborted\n"); 92 logent(value(HOST), "", "", "call aborted"); 93 if (acu != NOACU) { 94 setboolean(value(VERBOSE), FALSE); 95 if (conflag) 96 disconnect(NOSTR); 97 else 98 (*acu->acu_abort)(); 99 } 100 return ("interrupt"); 101 } 102 if ((acu = acutype(AT)) == NOACU) 103 return ("unknown ACU type"); 104 if (*cp != '@') { 105 while (*cp) { 106 phnum = cp; 107 cp += strcspn(cp, ","); 108 if (*cp != '\0') 109 *cp++ = '\0'; 110 111 if (strlen(phnum) == 0) 112 continue; 113 114 conflag = (*acu->acu_dialer)(phnum, CU); 115 if (conflag) 116 break; 117 118 logent(value(HOST), phnum, acu->acu_name, "call failed"); 119 tried++; 120 } 121 } else { 122 if ((fd = fopen(PH, "r")) == NOFILE) { 123 printf("%s: ", PH); 124 return ("can't open phone number file"); 125 } 126 while (fgets(string, sizeof(string), fd) != NOSTR) { 127 cp = &string[strcspn(string, " \t\n")]; 128 if (*cp != '\0') 129 *cp++ = '\0'; 130 131 if (strcmp(string, value(HOST)) != 0) 132 continue; 133 134 cp += strspn(cp, " \t\n"); 135 phnum = cp; 136 *(cp + strcspn(cp, ",\n")) = '\0'; 137 138 if (strlen(phnum) == 0) 139 continue; 140 141 conflag = (*acu->acu_dialer)(phnum, CU); 142 if (conflag) 143 break; 144 145 logent(value(HOST), phnum, acu->acu_name, "call failed"); 146 tried++; 147 } 148 fclose(fd); 149 } 150 if (conflag) { 151 if (CM != NOSTR) 152 parwrite(FD, CM, size(CM)); 153 logent(value(HOST), phnum, acu->acu_name, "call completed"); 154 return (NOSTR); 155 } else if (!tried) { 156 logent(value(HOST), "", acu->acu_name, "missing phone number"); 157 return ("missing phone number"); 158 } else { 159 (*acu->acu_abort)(); 160 return ("call failed"); 161 } 162 } 163 164 void 165 disconnect(char *reason) 166 { 167 if (!conflag) { 168 logent(value(HOST), "", DV, "call terminated"); 169 return; 170 } 171 if (reason == NOSTR) { 172 logent(value(HOST), "", acu->acu_name, "call terminated"); 173 if (boolean(value(VERBOSE))) 174 printf("\r\ndisconnecting..."); 175 } else 176 logent(value(HOST), "", acu->acu_name, reason); 177 (*acu->acu_disconnect)(); 178 } 179 180 static void 181 acuabort(int s) 182 { 183 signal(s, SIG_IGN); 184 longjmp(jmpbuf, 1); 185 } 186 187 static acu_t * 188 acutype(char *s) 189 { 190 acu_t *p; 191 extern acu_t acutable[]; 192 193 for (p = acutable; p->acu_name != NULL; p++) 194 if (!strcmp(s, p->acu_name)) 195 return (p); 196 return (NOACU); 197 } 198