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 "tip.h" 36 37 static acu_t *acu = NOACU; 38 static int conflag; 39 static void acuabort(int); 40 static acu_t *acutype(char *); 41 static jmp_buf jmpbuf; 42 /* 43 * Establish connection for tip 44 * 45 * If DU is true, we should dial an ACU whose type is AT. 46 * The phone numbers are in PN, and the call unit is in CU. 47 * 48 * If the PN is an '@', then we consult the PHONES file for 49 * the phone numbers. This file is /etc/phones, unless overridden 50 * by an exported shell variable. 51 * 52 * The data base files must be in the format: 53 * host-name[ \t]*phone-number 54 * with the possibility of multiple phone numbers 55 * for a single host acting as a rotary (in the order 56 * found in the file). 57 */ 58 char * 59 con(void) 60 { 61 char *cp = PN; 62 char *phnum, string[256]; 63 FILE *fd; 64 volatile int tried = 0; 65 66 if (!DU) { /* regular connect message */ 67 if (CM != NOSTR) 68 parwrite(FD, CM, size(CM)); 69 logent(value(HOST), "", DV, "call completed"); 70 return (NOSTR); 71 } 72 /* 73 * @ =>'s use data base in PHONES environment variable 74 * otherwise, use /etc/phones 75 */ 76 signal(SIGINT, acuabort); 77 signal(SIGQUIT, acuabort); 78 if (setjmp(jmpbuf)) { 79 signal(SIGINT, SIG_IGN); 80 signal(SIGQUIT, SIG_IGN); 81 printf("\ncall aborted\n"); 82 logent(value(HOST), "", "", "call aborted"); 83 if (acu != NOACU) { 84 setboolean(value(VERBOSE), FALSE); 85 if (conflag) 86 disconnect(NOSTR); 87 else 88 (*acu->acu_abort)(); 89 } 90 return ("interrupt"); 91 } 92 if ((acu = acutype(AT)) == NOACU) 93 return ("unknown ACU type"); 94 if (*cp != '@') { 95 while (*cp) { 96 phnum = cp; 97 cp += strcspn(cp, ","); 98 if (*cp != '\0') 99 *cp++ = '\0'; 100 101 if (strlen(phnum) == 0) 102 continue; 103 104 conflag = (*acu->acu_dialer)(phnum, CU); 105 if (conflag) 106 break; 107 108 logent(value(HOST), phnum, acu->acu_name, "call failed"); 109 tried++; 110 } 111 } else { 112 if ((fd = fopen(PH, "r")) == NOFILE) { 113 printf("%s: ", PH); 114 return ("can't open phone number file"); 115 } 116 while (fgets(string, sizeof(string), fd) != NOSTR) { 117 cp = &string[strcspn(string, " \t\n")]; 118 if (*cp != '\0') 119 *cp++ = '\0'; 120 121 if (strcmp(string, value(HOST)) != 0) 122 continue; 123 124 cp += strspn(cp, " \t\n"); 125 phnum = cp; 126 *(cp + strcspn(cp, ",\n")) = '\0'; 127 128 if (strlen(phnum) == 0) 129 continue; 130 131 conflag = (*acu->acu_dialer)(phnum, CU); 132 if (conflag) 133 break; 134 135 logent(value(HOST), phnum, acu->acu_name, "call failed"); 136 tried++; 137 } 138 fclose(fd); 139 } 140 if (conflag) { 141 if (CM != NOSTR) 142 parwrite(FD, CM, size(CM)); 143 logent(value(HOST), phnum, acu->acu_name, "call completed"); 144 return (NOSTR); 145 } else if (!tried) { 146 logent(value(HOST), "", acu->acu_name, "missing phone number"); 147 return ("missing phone number"); 148 } else { 149 (*acu->acu_abort)(); 150 return ("call failed"); 151 } 152 } 153 154 void 155 disconnect(char *reason) 156 { 157 if (!conflag) { 158 logent(value(HOST), "", DV, "call terminated"); 159 return; 160 } 161 if (reason == NOSTR) { 162 logent(value(HOST), "", acu->acu_name, "call terminated"); 163 if (boolean(value(VERBOSE))) 164 printf("\r\ndisconnecting..."); 165 } else 166 logent(value(HOST), "", acu->acu_name, reason); 167 (*acu->acu_disconnect)(); 168 } 169 170 static void 171 acuabort(int s) 172 { 173 signal(s, SIG_IGN); 174 longjmp(jmpbuf, 1); 175 } 176 177 static acu_t * 178 acutype(char *s) 179 { 180 acu_t *p; 181 extern acu_t acutable[]; 182 183 for (p = acutable; p->acu_name != NULL; p++) 184 if (!strcmp(s, p->acu_name)) 185 return (p); 186 return (NOACU); 187 } 188