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 <sys/cdefs.h> 36 #ifndef lint 37 #endif /* not lint */ 38 39 #include "tip.h" 40 41 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 42 43 static int dialtimeout = 0; 44 static jmp_buf timeoutbuf; 45 46 static int biz_dialer(char *, char *); 47 static void sigALRM(int); 48 static int cmd(char *); 49 static int detect(char *); 50 51 /* 52 * Dial up on a BIZCOMP Model 1022 with either 53 * tone dialing (mod = "V") 54 * pulse dialing (mod = "W") 55 */ 56 static int 57 biz_dialer(char *num, char *mod) 58 { 59 int connected = 0; 60 char cbuf[40]; 61 62 if (boolean(value(VERBOSE))) 63 printf("\nstarting call..."); 64 /* 65 * Disable auto-answer and configure for tone/pulse 66 * dialing 67 */ 68 if (cmd("\02K\r")) { 69 printf("can't initialize bizcomp..."); 70 return (0); 71 } 72 (void)strlcpy(cbuf, "\02.\r", sizeof cbuf); 73 cbuf[1] = *mod; 74 if (cmd(cbuf)) { 75 printf("can't set dialing mode..."); 76 return (0); 77 } 78 (void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num); 79 write(FD, cbuf, strlen(cbuf)); 80 if (!detect("7\r")) { 81 printf("can't get dial tone..."); 82 return (0); 83 } 84 if (boolean(value(VERBOSE))) 85 printf("ringing..."); 86 /* 87 * The reply from the BIZCOMP should be: 88 * 2 \r or 7 \r failure 89 * 1 \r success 90 */ 91 connected = detect("1\r"); 92 #ifdef ACULOG 93 if (dialtimeout) { 94 char line[80]; 95 96 (void)snprintf(line, sizeof line, "%ld second dial timeout", 97 number(value(DIALTIMEOUT))); 98 logent(value(HOST), num, "biz1022", line); 99 } 100 #endif 101 if (dialtimeout) 102 biz22_disconnect(); /* insurance */ 103 return (connected); 104 } 105 106 int 107 biz22w_dialer(char *num, char *acu) 108 { 109 return (biz_dialer(num, "W")); 110 } 111 112 int 113 biz22f_dialer(char *num, char *acu) 114 { 115 return (biz_dialer(num, "V")); 116 } 117 118 void 119 biz22_disconnect(void) 120 { 121 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 122 sleep(2); 123 tcflush(FD, TCIOFLUSH); 124 } 125 126 void 127 biz22_abort(void) 128 { 129 write(FD, "\02", 1); 130 } 131 132 /*ARGSUSED*/ 133 static void 134 sigALRM(int signo) 135 { 136 dialtimeout = 1; 137 longjmp(timeoutbuf, 1); 138 } 139 140 static int 141 cmd(char *s) 142 { 143 sig_t f; 144 char c; 145 146 write(FD, s, strlen(s)); 147 f = signal(SIGALRM, sigALRM); 148 if (setjmp(timeoutbuf)) { 149 biz22_abort(); 150 signal(SIGALRM, f); 151 return (1); 152 } 153 alarm(number(value(DIALTIMEOUT))); 154 read(FD, &c, 1); 155 alarm(0); 156 signal(SIGALRM, f); 157 c &= 0177; 158 return (c != '\r'); 159 } 160 161 static int 162 detect(char *s) 163 { 164 sig_t f; 165 char c; 166 167 f = signal(SIGALRM, sigALRM); 168 dialtimeout = 0; 169 while (*s) { 170 if (setjmp(timeoutbuf)) { 171 biz22_abort(); 172 break; 173 } 174 alarm(number(value(DIALTIMEOUT))); 175 read(FD, &c, 1); 176 alarm(0); 177 c &= 0177; 178 if (c != *s++) 179 return (0); 180 } 181 signal(SIGALRM, f); 182 return (dialtimeout == 0); 183 } 184