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 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)biz22.c 8.1 (Berkeley) 6/6/93"; 39 static const char rcsid[] = "$OpenBSD: biz22.c,v 1.13 2006/03/17 19:17:13 moritz Exp $"; 40 #endif 41 #endif /* not lint */ 42 43 #include "tip.h" 44 45 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 46 47 static int dialtimeout = 0; 48 static jmp_buf timeoutbuf; 49 50 static int biz_dialer(char *, char *); 51 static void sigALRM(int); 52 static int cmd(char *); 53 static int detect(char *); 54 55 /* 56 * Dial up on a BIZCOMP Model 1022 with either 57 * tone dialing (mod = "V") 58 * pulse dialing (mod = "W") 59 */ 60 static int 61 biz_dialer(char *num, char *mod) 62 { 63 int connected = 0; 64 char cbuf[40]; 65 66 if (boolean(value(VERBOSE))) 67 printf("\nstarting call..."); 68 /* 69 * Disable auto-answer and configure for tone/pulse 70 * dialing 71 */ 72 if (cmd("\02K\r")) { 73 printf("can't initialize bizcomp..."); 74 return (0); 75 } 76 (void)strlcpy(cbuf, "\02.\r", sizeof cbuf); 77 cbuf[1] = *mod; 78 if (cmd(cbuf)) { 79 printf("can't set dialing mode..."); 80 return (0); 81 } 82 (void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num); 83 write(FD, cbuf, strlen(cbuf)); 84 if (!detect("7\r")) { 85 printf("can't get dial tone..."); 86 return (0); 87 } 88 if (boolean(value(VERBOSE))) 89 printf("ringing..."); 90 /* 91 * The reply from the BIZCOMP should be: 92 * 2 \r or 7 \r failure 93 * 1 \r success 94 */ 95 connected = detect("1\r"); 96 #ifdef ACULOG 97 if (dialtimeout) { 98 char line[80]; 99 100 (void)snprintf(line, sizeof line, "%ld second dial timeout", 101 number(value(DIALTIMEOUT))); 102 logent(value(HOST), num, "biz1022", line); 103 } 104 #endif 105 if (dialtimeout) 106 biz22_disconnect(); /* insurance */ 107 return (connected); 108 } 109 110 int 111 biz22w_dialer(char *num, char *acu) 112 { 113 return (biz_dialer(num, "W")); 114 } 115 116 int 117 biz22f_dialer(char *num, char *acu) 118 { 119 return (biz_dialer(num, "V")); 120 } 121 122 void 123 biz22_disconnect(void) 124 { 125 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 126 sleep(2); 127 tcflush(FD, TCIOFLUSH); 128 } 129 130 void 131 biz22_abort(void) 132 { 133 write(FD, "\02", 1); 134 } 135 136 /*ARGSUSED*/ 137 static void 138 sigALRM(int signo) 139 { 140 dialtimeout = 1; 141 longjmp(timeoutbuf, 1); 142 } 143 144 static int 145 cmd(char *s) 146 { 147 sig_t f; 148 char c; 149 150 write(FD, s, strlen(s)); 151 f = signal(SIGALRM, sigALRM); 152 if (setjmp(timeoutbuf)) { 153 biz22_abort(); 154 signal(SIGALRM, f); 155 return (1); 156 } 157 alarm(number(value(DIALTIMEOUT))); 158 read(FD, &c, 1); 159 alarm(0); 160 signal(SIGALRM, f); 161 c &= 0177; 162 return (c != '\r'); 163 } 164 165 static int 166 detect(char *s) 167 { 168 sig_t f; 169 char c; 170 171 f = signal(SIGALRM, sigALRM); 172 dialtimeout = 0; 173 while (*s) { 174 if (setjmp(timeoutbuf)) { 175 biz22_abort(); 176 break; 177 } 178 alarm(number(value(DIALTIMEOUT))); 179 read(FD, &c, 1); 180 alarm(0); 181 c &= 0177; 182 if (c != *s++) 183 return (0); 184 } 185 signal(SIGALRM, f); 186 return (dialtimeout == 0); 187 } 188