1 /* $NetBSD: acu.c,v 1.18 2021/09/11 20:28:06 andvar 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 1.18 2021/09/11 20:28:06 andvar 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 __dead 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 overridden. 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 tip_connect(void) 67 { 68 char * volatile cp; 69 char *phnum, string[256]; 70 FILE *fd; 71 int volatile tried; 72 73 cp = PN; 74 tried = 0; 75 76 if (!DU) { /* regular connect message */ 77 if (CM != NULL) 78 xpwrite(FD, CM, strlen(CM)); 79 return (NULL); 80 } 81 /* 82 * @ =>'s use data base in PHONES environment variable 83 * otherwise, use /etc/phones 84 */ 85 (void)signal(SIGINT, acuabort); 86 (void)signal(SIGQUIT, acuabort); 87 if (setjmp(jmpbuf)) { 88 (void)signal(SIGINT, SIG_IGN); 89 (void)signal(SIGQUIT, SIG_IGN); 90 (void)printf("\ncall aborted\n"); 91 if (acu != NULL) { 92 setboolean(value(VERBOSE), FALSE); 93 if (conflag) 94 disconnect(NULL); 95 else 96 (*acu->acu_abort)(); 97 } 98 return ("interrupt"); 99 } 100 if ((acu = acutype(AT)) == NULL) 101 return ("unknown ACU type"); 102 if (*cp != '@') { 103 while (*cp) { 104 for (phnum = cp; *cp && *cp != ','; cp++) 105 ; 106 if (*cp) 107 *cp++ = '\0'; 108 109 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 110 if (CM != NULL) 111 xpwrite(FD, CM, strlen(CM)); 112 return (NULL); 113 } else 114 tried++; 115 } 116 } else { 117 if ((fd = fopen(PH, "r")) == NULL) { 118 (void)printf("%s: ", PH); 119 return ("can't open phone number file"); 120 } 121 while (fgets(string, sizeof(string), fd) != NULL) { 122 for (cp = string; !any(*cp, " \t\n"); cp++) 123 ; 124 if (*cp == '\n') { 125 (void)fclose(fd); 126 return ("unrecognizable host name"); 127 } 128 *cp++ = '\0'; 129 if (strcmp(string, value(HOST))) 130 continue; 131 while (any(*cp, " \t")) 132 cp++; 133 if (*cp == '\n') { 134 (void)fclose(fd); 135 return ("missing phone number"); 136 } 137 for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++) 138 ; 139 if (*cp) 140 *cp++ = '\0'; 141 142 if ((conflag = (*acu->acu_dialer)(phnum, CU)) != 0) { 143 (void)fclose(fd); 144 if (CM != NULL) 145 xpwrite(FD, CM, strlen(CM)); 146 return (NULL); 147 } else 148 tried++; 149 } 150 (void)fclose(fd); 151 } 152 if (!tried) { 153 } 154 else 155 (*acu->acu_abort)(); 156 return (tried ? "call failed" : "missing phone number"); 157 } 158 159 void 160 disconnect(const char *reason) 161 { 162 163 if (!conflag) { 164 return; 165 } 166 if (reason == NULL) { 167 if (boolean(value(VERBOSE))) 168 (void)printf("\r\ndisconnecting..."); 169 } else 170 (*acu->acu_disconnect)(); 171 } 172 173 static void 174 acuabort(int s) 175 { 176 177 (void)signal(s, SIG_IGN); 178 longjmp(jmpbuf, 1); 179 } 180 181 static acu_t * 182 acutype(char *s) 183 { 184 acu_t *p; 185 186 for (p = acutable; p->acu_name != NULL; p++) 187 if (!strcmp(s, p->acu_name)) 188 return (p); 189 return (NULL); 190 } 191
Indexes created Sun Sep 21 20:09:37 GMT 2025