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 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)biz22.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: biz22.c,v 1.13 2006/03/17 19:17:13 moritz Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 #include "tip.h" 46 47 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 48 49 static int dialtimeout = 0; 50 static jmp_buf timeoutbuf; 51 52 static int biz_dialer(char *, char *); 53 static void sigALRM(int); 54 static int cmd(char *); 55 static int detect(char *); 56 57 /* 58 * Dial up on a BIZCOMP Model 1022 with either 59 * tone dialing (mod = "V") 60 * pulse dialing (mod = "W") 61 */ 62 static int 63 biz_dialer(char *num, char *mod) 64 { 65 int connected = 0; 66 char cbuf[40]; 67 68 if (boolean(value(VERBOSE))) 69 printf("\nstarting call..."); 70 /* 71 * Disable auto-answer and configure for tone/pulse 72 * dialing 73 */ 74 if (cmd("\02K\r")) { 75 printf("can't initialize bizcomp..."); 76 return (0); 77 } 78 (void)strlcpy(cbuf, "\02.\r", sizeof cbuf); 79 cbuf[1] = *mod; 80 if (cmd(cbuf)) { 81 printf("can't set dialing mode..."); 82 return (0); 83 } 84 (void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num); 85 write(FD, cbuf, strlen(cbuf)); 86 if (!detect("7\r")) { 87 printf("can't get dial tone..."); 88 return (0); 89 } 90 if (boolean(value(VERBOSE))) 91 printf("ringing..."); 92 /* 93 * The reply from the BIZCOMP should be: 94 * 2 \r or 7 \r failure 95 * 1 \r success 96 */ 97 connected = detect("1\r"); 98 #ifdef ACULOG 99 if (dialtimeout) { 100 char line[80]; 101 102 (void)snprintf(line, sizeof line, "%ld second dial timeout", 103 number(value(DIALTIMEOUT))); 104 logent(value(HOST), num, "biz1022", line); 105 } 106 #endif 107 if (dialtimeout) 108 biz22_disconnect(); /* insurance */ 109 return (connected); 110 } 111 112 int 113 biz22w_dialer(char *num, char *acu) 114 { 115 return (biz_dialer(num, "W")); 116 } 117 118 int 119 biz22f_dialer(char *num, char *acu) 120 { 121 return (biz_dialer(num, "V")); 122 } 123 124 void 125 biz22_disconnect(void) 126 { 127 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 128 sleep(2); 129 tcflush(FD, TCIOFLUSH); 130 } 131 132 void 133 biz22_abort(void) 134 { 135 write(FD, "\02", 1); 136 } 137 138 /*ARGSUSED*/ 139 static void 140 sigALRM(int signo) 141 { 142 dialtimeout = 1; 143 longjmp(timeoutbuf, 1); 144 } 145 146 static int 147 cmd(char *s) 148 { 149 sig_t f; 150 char c; 151 152 write(FD, s, strlen(s)); 153 f = signal(SIGALRM, sigALRM); 154 if (setjmp(timeoutbuf)) { 155 biz22_abort(); 156 signal(SIGALRM, f); 157 return (1); 158 } 159 alarm(number(value(DIALTIMEOUT))); 160 read(FD, &c, 1); 161 alarm(0); 162 signal(SIGALRM, f); 163 c &= 0177; 164 return (c != '\r'); 165 } 166 167 static int 168 detect(char *s) 169 { 170 sig_t f; 171 char c; 172 173 f = signal(SIGALRM, sigALRM); 174 dialtimeout = 0; 175 while (*s) { 176 if (setjmp(timeoutbuf)) { 177 biz22_abort(); 178 break; 179 } 180 alarm(number(value(DIALTIMEOUT))); 181 read(FD, &c, 1); 182 alarm(0); 183 c &= 0177; 184 if (c != *s++) 185 return (0); 186 } 187 signal(SIGALRM, f); 188 return (dialtimeout == 0); 189 } 190