1 /* $OpenBSD: biz22.c,v 1.13 2006/03/17 19:17:13 moritz Exp $ */ 2 /* $NetBSD: biz22.c,v 1.6 1997/02/11 09:24:11 mrg 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 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 38 39 static int dialtimeout = 0; 40 static jmp_buf timeoutbuf; 41 42 static int biz_dialer(char *, char *); 43 static void sigALRM(int); 44 static int cmd(char *); 45 static int detect(char *); 46 47 /* 48 * Dial up on a BIZCOMP Model 1022 with either 49 * tone dialing (mod = "V") 50 * pulse dialing (mod = "W") 51 */ 52 static int 53 biz_dialer(char *num, char *mod) 54 { 55 int connected = 0; 56 char cbuf[40]; 57 58 if (boolean(value(VERBOSE))) 59 printf("\nstarting call..."); 60 /* 61 * Disable auto-answer and configure for tone/pulse 62 * dialing 63 */ 64 if (cmd("\02K\r")) { 65 printf("can't initialize bizcomp..."); 66 return (0); 67 } 68 (void)strlcpy(cbuf, "\02.\r", sizeof cbuf); 69 cbuf[1] = *mod; 70 if (cmd(cbuf)) { 71 printf("can't set dialing mode..."); 72 return (0); 73 } 74 (void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num); 75 write(FD, cbuf, strlen(cbuf)); 76 if (!detect("7\r")) { 77 printf("can't get dial tone..."); 78 return (0); 79 } 80 if (boolean(value(VERBOSE))) 81 printf("ringing..."); 82 /* 83 * The reply from the BIZCOMP should be: 84 * 2 \r or 7 \r failure 85 * 1 \r success 86 */ 87 connected = detect("1\r"); 88 #ifdef ACULOG 89 if (dialtimeout) { 90 char line[80]; 91 92 (void)snprintf(line, sizeof line, "%ld second dial timeout", 93 number(value(DIALTIMEOUT))); 94 logent(value(HOST), num, "biz1022", line); 95 } 96 #endif 97 if (dialtimeout) 98 biz22_disconnect(); /* insurance */ 99 return (connected); 100 } 101 102 int 103 biz22w_dialer(char *num, char *acu) 104 { 105 return (biz_dialer(num, "W")); 106 } 107 108 int 109 biz22f_dialer(char *num, char *acu) 110 { 111 return (biz_dialer(num, "V")); 112 } 113 114 void 115 biz22_disconnect(void) 116 { 117 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 118 sleep(2); 119 tcflush(FD, TCIOFLUSH); 120 } 121 122 void 123 biz22_abort(void) 124 { 125 write(FD, "\02", 1); 126 } 127 128 /*ARGSUSED*/ 129 static void 130 sigALRM(int signo) 131 { 132 dialtimeout = 1; 133 longjmp(timeoutbuf, 1); 134 } 135 136 static int 137 cmd(char *s) 138 { 139 sig_t f; 140 char c; 141 142 write(FD, s, strlen(s)); 143 f = signal(SIGALRM, sigALRM); 144 if (setjmp(timeoutbuf)) { 145 biz22_abort(); 146 signal(SIGALRM, f); 147 return (1); 148 } 149 alarm(number(value(DIALTIMEOUT))); 150 read(FD, &c, 1); 151 alarm(0); 152 signal(SIGALRM, f); 153 c &= 0177; 154 return (c != '\r'); 155 } 156 157 static int 158 detect(char *s) 159 { 160 sig_t f; 161 char c; 162 163 f = signal(SIGALRM, sigALRM); 164 dialtimeout = 0; 165 while (*s) { 166 if (setjmp(timeoutbuf)) { 167 biz22_abort(); 168 break; 169 } 170 alarm(number(value(DIALTIMEOUT))); 171 read(FD, &c, 1); 172 alarm(0); 173 c &= 0177; 174 if (c != *s++) 175 return (0); 176 } 177 signal(SIGALRM, f); 178 return (dialtimeout == 0); 179 } 180