1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "@(#)acu.c 5.8 (Berkeley) 3/2/91"; 36 #endif /* not lint */ 37 38 #include "tip.h" 39 40 static acu_t *acu = NOACU; 41 static int conflag; 42 static void acuabort(); 43 static acu_t *acutype(); 44 static jmp_buf jmpbuf; 45 /* 46 * Establish connection for tip 47 * 48 * If DU is true, we should dial an ACU whose type is AT. 49 * The phone numbers are in PN, and the call unit is in CU. 50 * 51 * If the PN is an '@', then we consult the PHONES file for 52 * the phone numbers. This file is /etc/phones, unless overriden 53 * by an exported shell variable. 54 * 55 * The data base files must be in the format: 56 * host-name[ \t]*phone-number 57 * with the possibility of multiple phone numbers 58 * for a single host acting as a rotary (in the order 59 * found in the file). 60 */ 61 char * 62 connect() 63 { 64 register char *cp = PN; 65 char *phnum, string[256]; 66 FILE *fd; 67 int tried = 0; 68 69 if (!DU) { /* regular connect message */ 70 if (CM != NOSTR) 71 pwrite(FD, CM, size(CM)); 72 logent(value(HOST), "", DV, "call completed"); 73 return (NOSTR); 74 } 75 /* 76 * @ =>'s use data base in PHONES environment variable 77 * otherwise, use /etc/phones 78 */ 79 signal(SIGINT, acuabort); 80 signal(SIGQUIT, acuabort); 81 if (setjmp(jmpbuf)) { 82 signal(SIGINT, SIG_IGN); 83 signal(SIGQUIT, SIG_IGN); 84 printf("\ncall aborted\n"); 85 logent(value(HOST), "", "", "call aborted"); 86 if (acu != NOACU) { 87 boolean(value(VERBOSE)) = FALSE; 88 if (conflag) 89 disconnect(NOSTR); 90 else 91 (*acu->acu_abort)(); 92 } 93 return ("interrupt"); 94 } 95 if ((acu = acutype(AT)) == NOACU) 96 return ("unknown ACU type"); 97 if (*cp != '@') { 98 while (*cp) { 99 for (phnum = cp; *cp && *cp != ','; cp++) 100 ; 101 if (*cp) 102 *cp++ = '\0'; 103 104 if (conflag = (*acu->acu_dialer)(phnum, CU)) { 105 logent(value(HOST), phnum, acu->acu_name, 106 "call completed"); 107 return (NOSTR); 108 } else 109 logent(value(HOST), phnum, acu->acu_name, 110 "call failed"); 111 tried++; 112 } 113 } else { 114 if ((fd = fopen(PH, "r")) == NOFILE) { 115 printf("%s: ", PH); 116 return ("can't open phone number file"); 117 } 118 while (fgets(string, sizeof(string), fd) != NOSTR) { 119 for (cp = string; !any(*cp, " \t\n"); cp++) 120 ; 121 if (*cp == '\n') { 122 fclose(fd); 123 return ("unrecognizable host name"); 124 } 125 *cp++ = '\0'; 126 if (strcmp(string, value(HOST))) 127 continue; 128 while (any(*cp, " \t")) 129 cp++; 130 if (*cp == '\n') { 131 fclose(fd); 132 return ("missing phone number"); 133 } 134 for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++) 135 ; 136 if (*cp) 137 *cp++ = '\0'; 138 139 if (conflag = (*acu->acu_dialer)(phnum, CU)) { 140 fclose(fd); 141 logent(value(HOST), phnum, acu->acu_name, 142 "call completed"); 143 return (NOSTR); 144 } else 145 logent(value(HOST), phnum, acu->acu_name, 146 "call failed"); 147 tried++; 148 } 149 fclose(fd); 150 } 151 if (!tried) 152 logent(value(HOST), "", acu->acu_name, "missing phone number"); 153 else 154 (*acu->acu_abort)(); 155 return (tried ? "call failed" : "missing phone number"); 156 } 157 158 disconnect(reason) 159 char *reason; 160 { 161 if (!conflag) { 162 logent(value(HOST), "", DV, "call terminated"); 163 return; 164 } 165 if (reason == NOSTR) { 166 logent(value(HOST), "", acu->acu_name, "call terminated"); 167 if (boolean(value(VERBOSE))) 168 printf("\r\ndisconnecting..."); 169 } else 170 logent(value(HOST), "", acu->acu_name, reason); 171 (*acu->acu_disconnect)(); 172 } 173 174 static void 175 acuabort(s) 176 { 177 signal(s, SIG_IGN); 178 longjmp(jmpbuf, 1); 179 } 180 181 static acu_t * 182 acutype(s) 183 register char *s; 184 { 185 register acu_t *p; 186 extern acu_t acutable[]; 187 188 for (p = acutable; p->acu_name != '\0'; p++) 189 if (!strcmp(s, p->acu_name)) 190 return (p); 191 return (NOACU); 192 } 193