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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)acu.c 8.1 (Berkeley) 6/6/93"; 39 static const char rcsid[] = "$OpenBSD: acu.c,v 1.12 2006/03/17 14:43:06 moritz Exp $"; 40 #endif 41 #endif /* not lint */ 42 43 #include "tip.h" 44 45 static acu_t *acu = NOACU; 46 static int conflag; 47 static void acuabort(int); 48 static acu_t *acutype(char *); 49 static jmp_buf jmpbuf; 50 /* 51 * Establish connection for tip 52 * 53 * If DU is true, we should dial an ACU whose type is AT. 54 * The phone numbers are in PN, and the call unit is in CU. 55 * 56 * If the PN is an '@', then we consult the PHONES file for 57 * the phone numbers. This file is /etc/phones, unless overridden 58 * by an exported shell variable. 59 * 60 * The data base files must be in the format: 61 * host-name[ \t]*phone-number 62 * with the possibility of multiple phone numbers 63 * for a single host acting as a rotary (in the order 64 * found in the file). 65 */ 66 char * 67 con(void) 68 { 69 char *cp = PN; 70 char *phnum, string[256]; 71 FILE *fd; 72 volatile int tried = 0; 73 74 if (!DU) { /* regular connect message */ 75 if (CM != NOSTR) 76 parwrite(FD, CM, size(CM)); 77 logent(value(HOST), "", DV, "call completed"); 78 return (NOSTR); 79 } 80 /* 81 * @ =>'s use data base in PHONES environment variable 82 * otherwise, use /etc/phones 83 */ 84 signal(SIGINT, acuabort); 85 signal(SIGQUIT, acuabort); 86 if (setjmp(jmpbuf)) { 87 signal(SIGINT, SIG_IGN); 88 signal(SIGQUIT, SIG_IGN); 89 printf("\ncall aborted\n"); 90 logent(value(HOST), "", "", "call aborted"); 91 if (acu != NOACU) { 92 setboolean(value(VERBOSE), FALSE); 93 if (conflag) 94 disconnect(NOSTR); 95 else 96 (*acu->acu_abort)(); 97 } 98 return ("interrupt"); 99 } 100 if ((acu = acutype(AT)) == NOACU) 101 return ("unknown ACU type"); 102 if (*cp != '@') { 103 while (*cp) { 104 phnum = cp; 105 cp += strcspn(cp, ","); 106 if (*cp != '\0') 107 *cp++ = '\0'; 108 109 if (strlen(phnum) == 0) 110 continue; 111 112 conflag = (*acu->acu_dialer)(phnum, CU); 113 if (conflag) 114 break; 115 116 logent(value(HOST), phnum, acu->acu_name, "call failed"); 117 tried++; 118 } 119 } else { 120 if ((fd = fopen(PH, "r")) == NOFILE) { 121 printf("%s: ", PH); 122 return ("can't open phone number file"); 123 } 124 while (fgets(string, sizeof(string), fd) != NOSTR) { 125 cp = &string[strcspn(string, " \t\n")]; 126 if (*cp != '\0') 127 *cp++ = '\0'; 128 129 if (strcmp(string, value(HOST)) != 0) 130 continue; 131 132 cp += strspn(cp, " \t\n"); 133 phnum = cp; 134 *(cp + strcspn(cp, ",\n")) = '\0'; 135 136 if (strlen(phnum) == 0) 137 continue; 138 139 conflag = (*acu->acu_dialer)(phnum, CU); 140 if (conflag) 141 break; 142 143 logent(value(HOST), phnum, acu->acu_name, "call failed"); 144 tried++; 145 } 146 fclose(fd); 147 } 148 if (conflag) { 149 if (CM != NOSTR) 150 parwrite(FD, CM, size(CM)); 151 logent(value(HOST), phnum, acu->acu_name, "call completed"); 152 return (NOSTR); 153 } else if (!tried) { 154 logent(value(HOST), "", acu->acu_name, "missing phone number"); 155 return ("missing phone number"); 156 } else { 157 (*acu->acu_abort)(); 158 return ("call failed"); 159 } 160 } 161 162 void 163 disconnect(char *reason) 164 { 165 if (!conflag) { 166 logent(value(HOST), "", DV, "call terminated"); 167 return; 168 } 169 if (reason == NOSTR) { 170 logent(value(HOST), "", acu->acu_name, "call terminated"); 171 if (boolean(value(VERBOSE))) 172 printf("\r\ndisconnecting..."); 173 } else 174 logent(value(HOST), "", acu->acu_name, reason); 175 (*acu->acu_disconnect)(); 176 } 177 178 static void 179 acuabort(int s) 180 { 181 signal(s, SIG_IGN); 182 longjmp(jmpbuf, 1); 183 } 184 185 static acu_t * 186 acutype(char *s) 187 { 188 acu_t *p; 189 extern acu_t acutable[]; 190 191 for (p = acutable; p->acu_name != NULL; p++) 192 if (!strcmp(s, p->acu_name)) 193 return (p); 194 return (NOACU); 195 } 196