1 /* $NetBSD: acu.c,v 1.12 2006/04/03 02:25:27 perry 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 1.12 2006/04/03 02:25:27 perry 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(int); 47 static acu_t *acutype(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(void) 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 return (NULL); 82 } 83 /* 84 * @ =>'s use data base in PHONES environment variable 85 * otherwise, use /etc/phones 86 */ 87 signal(SIGINT, acuabort); 88 signal(SIGQUIT, acuabort); 89 if (setjmp(jmpbuf)) { 90 signal(SIGINT, SIG_IGN); 91 signal(SIGQUIT, SIG_IGN); 92 printf("\ncall aborted\n"); 93 if (acu != NULL) { 94 setboolean(value(VERBOSE), FALSE); 95 if (conflag) 96 disconnect(NULL); 97 else 98 (*acu->acu_abort)(); 99 } 100 return ("interrupt"); 101 } 102 if ((acu = acutype(AT)) == NULL) 103 return ("unknown ACU type"); 104 if (*cp != '@') { 105 while (*cp) { 106 for (phnum = cp; *cp && *cp != ','; cp++) 107 ; 108 if (*cp) 109 *cp++ = '\0'; 110 111 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 112 if (CM != NULL) 113 xpwrite(FD, CM, strlen(CM)); 114 return (NULL); 115 } else 116 tried++; 117 } 118 } else { 119 if ((fd = fopen(PH, "r")) == NULL) { 120 printf("%s: ", PH); 121 return ("can't open phone number file"); 122 } 123 while (fgets(string, sizeof(string), fd) != NULL) { 124 for (cp = string; !any(*cp, " \t\n"); cp++) 125 ; 126 if (*cp == '\n') { 127 fclose(fd); 128 return ("unrecognizable host name"); 129 } 130 *cp++ = '\0'; 131 if (strcmp(string, value(HOST))) 132 continue; 133 while (any(*cp, " \t")) 134 cp++; 135 if (*cp == '\n') { 136 fclose(fd); 137 return ("missing phone number"); 138 } 139 for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++) 140 ; 141 if (*cp) 142 *cp++ = '\0'; 143 144 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 145 fclose(fd); 146 if (CM != NULL) 147 xpwrite(FD, CM, strlen(CM)); 148 return (NULL); 149 } else 150 tried++; 151 } 152 fclose(fd); 153 } 154 if (!tried) { 155 } 156 else 157 (*acu->acu_abort)(); 158 return (tried ? "call failed" : "missing phone number"); 159 } 160 161 void 162 disconnect(const char *reason) 163 { 164 165 if (!conflag) { 166 return; 167 } 168 if (reason == NULL) { 169 if (boolean(value(VERBOSE))) 170 printf("\r\ndisconnecting..."); 171 } else 172 (*acu->acu_disconnect)(); 173 } 174 175 static void 176 acuabort(int s) 177 { 178 179 signal(s, SIG_IGN); 180 longjmp(jmpbuf, 1); 181 } 182 183 static acu_t * 184 acutype(char *s) 185 { 186 acu_t *p; 187 188 for (p = acutable; p->acu_name != '\0'; p++) 189 if (!strcmp(s, p->acu_name)) 190 return (p); 191 return (NULL); 192 } 193