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 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)biz22.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 static const char rcsid[] = "$OpenBSD: biz22.c,v 1.13 2006/03/17 19:17:13 moritz Exp $"; 38 #endif /* not lint */ 39 40 #include "tip.h" 41 42 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 43 44 static int dialtimeout = 0; 45 static jmp_buf timeoutbuf; 46 47 static int biz_dialer(char *, char *); 48 static void sigALRM(int); 49 static int cmd(char *); 50 static int detect(char *); 51 52 /* 53 * Dial up on a BIZCOMP Model 1022 with either 54 * tone dialing (mod = "V") 55 * pulse dialing (mod = "W") 56 */ 57 static int 58 biz_dialer(char *num, char *mod) 59 { 60 int connected = 0; 61 char cbuf[40]; 62 63 if (boolean(value(VERBOSE))) 64 printf("\nstarting call..."); 65 /* 66 * Disable auto-answer and configure for tone/pulse 67 * dialing 68 */ 69 if (cmd("\02K\r")) { 70 printf("can't initialize bizcomp..."); 71 return (0); 72 } 73 (void)strlcpy(cbuf, "\02.\r", sizeof cbuf); 74 cbuf[1] = *mod; 75 if (cmd(cbuf)) { 76 printf("can't set dialing mode..."); 77 return (0); 78 } 79 (void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num); 80 write(FD, cbuf, strlen(cbuf)); 81 if (!detect("7\r")) { 82 printf("can't get dial tone..."); 83 return (0); 84 } 85 if (boolean(value(VERBOSE))) 86 printf("ringing..."); 87 /* 88 * The reply from the BIZCOMP should be: 89 * 2 \r or 7 \r failure 90 * 1 \r success 91 */ 92 connected = detect("1\r"); 93 #ifdef ACULOG 94 if (dialtimeout) { 95 char line[80]; 96 97 (void)snprintf(line, sizeof line, "%ld second dial timeout", 98 number(value(DIALTIMEOUT))); 99 logent(value(HOST), num, "biz1022", line); 100 } 101 #endif 102 if (dialtimeout) 103 biz22_disconnect(); /* insurance */ 104 return (connected); 105 } 106 107 int 108 biz22w_dialer(char *num, char *acu) 109 { 110 return (biz_dialer(num, "W")); 111 } 112 113 int 114 biz22f_dialer(char *num, char *acu) 115 { 116 return (biz_dialer(num, "V")); 117 } 118 119 void 120 biz22_disconnect(void) 121 { 122 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 123 sleep(2); 124 tcflush(FD, TCIOFLUSH); 125 } 126 127 void 128 biz22_abort(void) 129 { 130 write(FD, "\02", 1); 131 } 132 133 /*ARGSUSED*/ 134 static void 135 sigALRM(int signo) 136 { 137 dialtimeout = 1; 138 longjmp(timeoutbuf, 1); 139 } 140 141 static int 142 cmd(char *s) 143 { 144 sig_t f; 145 char c; 146 147 write(FD, s, strlen(s)); 148 f = signal(SIGALRM, sigALRM); 149 if (setjmp(timeoutbuf)) { 150 biz22_abort(); 151 signal(SIGALRM, f); 152 return (1); 153 } 154 alarm(number(value(DIALTIMEOUT))); 155 read(FD, &c, 1); 156 alarm(0); 157 signal(SIGALRM, f); 158 c &= 0177; 159 return (c != '\r'); 160 } 161 162 static int 163 detect(char *s) 164 { 165 sig_t f; 166 char c; 167 168 f = signal(SIGALRM, sigALRM); 169 dialtimeout = 0; 170 while (*s) { 171 if (setjmp(timeoutbuf)) { 172 biz22_abort(); 173 break; 174 } 175 alarm(number(value(DIALTIMEOUT))); 176 read(FD, &c, 1); 177 alarm(0); 178 c &= 0177; 179 if (c != *s++) 180 return (0); 181 } 182 signal(SIGALRM, f); 183 return (dialtimeout == 0); 184 } 185