1 /* $NetBSD: acu.c,v 1.9 2004/04/23 22:11:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)acu.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: acu.c,v 1.9 2004/04/23 22:11:44 christos Exp $"); 38 #endif /* not lint */ 39 40 #include "tip.h" 41 42 static acu_t *acu = NULL; 43 static int conflag; 44 static jmp_buf jmpbuf; 45 46 static void acuabort __P((int)); 47 static acu_t *acutype __P((char *)); 48 49 /* 50 * Establish connection for tip 51 * 52 * If DU is true, we should dial an ACU whose type is AT. 53 * The phone numbers are in PN, and the call unit is in CU. 54 * 55 * If the PN is an '@', then we consult the PHONES file for 56 * the phone numbers. This file is /etc/phones, unless overriden 57 * by an exported shell variable. 58 * 59 * The data base files must be in the format: 60 * host-name[ \t]*phone-number 61 * with the possibility of multiple phone numbers 62 * for a single host acting as a rotary (in the order 63 * found in the file). 64 */ 65 const char * 66 connect() 67 { 68 char *cp = PN; 69 char *phnum, string[256]; 70 FILE *fd; 71 int tried = 0; 72 73 #if __GNUC__ /* XXX pacify gcc */ 74 (void)&cp; 75 (void)&tried; 76 #endif 77 78 if (!DU) { /* regular connect message */ 79 if (CM != NULL) 80 xpwrite(FD, CM, strlen(CM)); 81 logent(value(HOST), "", DV, "call completed"); 82 return (NULL); 83 } 84 /* 85 * @ =>'s use data base in PHONES environment variable 86 * otherwise, use /etc/phones 87 */ 88 signal(SIGINT, acuabort); 89 signal(SIGQUIT, acuabort); 90 if (setjmp(jmpbuf)) { 91 signal(SIGINT, SIG_IGN); 92 signal(SIGQUIT, SIG_IGN); 93 printf("\ncall aborted\n"); 94 logent(value(HOST), "", "", "call aborted"); 95 if (acu != NULL) { 96 setboolean(value(VERBOSE), FALSE); 97 if (conflag) 98 disconnect(NULL); 99 else 100 (*acu->acu_abort)(); 101 } 102 return ("interrupt"); 103 } 104 if ((acu = acutype(AT)) == NULL) 105 return ("unknown ACU type"); 106 if (*cp != '@') { 107 while (*cp) { 108 for (phnum = cp; *cp && *cp != ','; cp++) 109 ; 110 if (*cp) 111 *cp++ = '\0'; 112 113 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 114 if (CM != NULL) 115 xpwrite(FD, CM, strlen(CM)); 116 logent(value(HOST), phnum, acu->acu_name, 117 "call completed"); 118 return (NULL); 119 } else 120 logent(value(HOST), phnum, acu->acu_name, 121 "call failed"); 122 tried++; 123 } 124 } else { 125 if ((fd = fopen(PH, "r")) == NULL) { 126 printf("%s: ", PH); 127 return ("can't open phone number file"); 128 } 129 while (fgets(string, sizeof(string), fd) != NULL) { 130 for (cp = string; !any(*cp, " \t\n"); cp++) 131 ; 132 if (*cp == '\n') { 133 fclose(fd); 134 return ("unrecognizable host name"); 135 } 136 *cp++ = '\0'; 137 if (strcmp(string, value(HOST))) 138 continue; 139 while (any(*cp, " \t")) 140 cp++; 141 if (*cp == '\n') { 142 fclose(fd); 143 return ("missing phone number"); 144 } 145 for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++) 146 ; 147 if (*cp) 148 *cp++ = '\0'; 149 150 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 151 fclose(fd); 152 if (CM != NULL) 153 xpwrite(FD, CM, strlen(CM)); 154 logent(value(HOST), phnum, acu->acu_name, 155 "call completed"); 156 return (NULL); 157 } else 158 logent(value(HOST), phnum, acu->acu_name, 159 "call failed"); 160 tried++; 161 } 162 fclose(fd); 163 } 164 if (!tried) 165 logent(value(HOST), "", acu->acu_name, "missing phone number"); 166 else 167 (*acu->acu_abort)(); 168 return (tried ? "call failed" : "missing phone number"); 169 } 170 171 void 172 disconnect(reason) 173 const char *reason; 174 { 175 176 if (!conflag) { 177 logent(value(HOST), "", DV, "call terminated"); 178 return; 179 } 180 if (reason == NULL) { 181 logent(value(HOST), "", acu->acu_name, "call terminated"); 182 if (boolean(value(VERBOSE))) 183 printf("\r\ndisconnecting..."); 184 } else 185 logent(value(HOST), "", acu->acu_name, reason); 186 (*acu->acu_disconnect)(); 187 } 188 189 static void 190 acuabort(s) 191 int s; 192 { 193 194 signal(s, SIG_IGN); 195 longjmp(jmpbuf, 1); 196 } 197 198 static acu_t * 199 acutype(s) 200 char *s; 201 { 202 acu_t *p; 203 204 for (p = acutable; p->acu_name != '\0'; p++) 205 if (!strcmp(s, p->acu_name)) 206 return (p); 207 return (NULL); 208 } 209