1 /* $NetBSD: biz22.c,v 1.9 2004/04/23 22:11:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)biz22.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: biz22.c,v 1.9 2004/04/23 22:11:44 christos Exp $"); 38 #endif /* not lint */ 39 40 #include "tip.h" 41 42 #define DISCONNECT_CMD "\20\04" /* disconnection string */ 43 44 static int btimeout = 0; 45 static jmp_buf timeoutbuf; 46 47 static int biz_dialer __P((char *, const char *)); 48 static int cmd __P((const char *)); 49 static int detect __P((const char *)); 50 static void sigALRM __P((int)); 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(num, mod) 59 char *num; 60 const char *mod; 61 { 62 int connected = 0; 63 char cbuf[40]; 64 65 if (boolean(value(VERBOSE))) 66 printf("\nstarting call..."); 67 /* 68 * Disable auto-answer and configure for tone/pulse 69 * dialing 70 */ 71 if (cmd("\02K\r")) { 72 printf("can't initialize bizcomp..."); 73 return (0); 74 } 75 (void)strncpy(cbuf, "\02.\r", sizeof(cbuf) - 1); 76 cbuf[1] = *mod; 77 if (cmd(cbuf)) { 78 printf("can't set dialing mode..."); 79 return (0); 80 } 81 (void)snprintf(cbuf, sizeof cbuf, "\02D%s\r", num); 82 write(FD, cbuf, strlen(cbuf)); 83 if (!detect("7\r")) { 84 printf("can't get dial tone..."); 85 return (0); 86 } 87 if (boolean(value(VERBOSE))) 88 printf("ringing..."); 89 /* 90 * The reply from the BIZCOMP should be: 91 * 2 \r or 7 \r failure 92 * 1 \r success 93 */ 94 connected = detect("1\r"); 95 #ifdef ACULOG 96 if (btimeout) { 97 char line[80]; 98 99 (void)snprintf(line, sizeof line, "%d second dial timeout", 100 (int)number(value(DIALTIMEOUT))); 101 logent(value(HOST), num, "biz1022", line); 102 } 103 #endif 104 if (btimeout) 105 biz22_disconnect(); /* insurance */ 106 return (connected); 107 } 108 109 int 110 biz22w_dialer(num, acu) 111 char *num, *acu; 112 { 113 114 return (biz_dialer(num, "W")); 115 } 116 117 int 118 biz22f_dialer(num, acu) 119 char *num, *acu; 120 { 121 122 return (biz_dialer(num, "V")); 123 } 124 125 void 126 biz22_disconnect() 127 { 128 129 write(FD, DISCONNECT_CMD, 4); 130 sleep(2); 131 tcflush(FD, TCIOFLUSH); 132 } 133 134 void 135 biz22_abort() 136 { 137 138 write(FD, "\02", 1); 139 } 140 141 static void 142 sigALRM(dummy) 143 int dummy; 144 { 145 146 btimeout = 1; 147 longjmp(timeoutbuf, 1); 148 } 149 150 static int 151 cmd(s) 152 const char *s; 153 { 154 sig_t f; 155 char c; 156 157 write(FD, s, strlen(s)); 158 f = signal(SIGALRM, sigALRM); 159 if (setjmp(timeoutbuf)) { 160 biz22_abort(); 161 signal(SIGALRM, f); 162 return (1); 163 } 164 alarm(number(value(DIALTIMEOUT))); 165 read(FD, &c, 1); 166 alarm(0); 167 signal(SIGALRM, f); 168 c &= 0177; 169 return (c != '\r'); 170 } 171 172 static int 173 detect(s) 174 const char *s; 175 { 176 sig_t f; 177 char c; 178 179 #if __GNUC__ /* XXX pacify gcc */ 180 (void)&s; 181 #endif 182 183 f = signal(SIGALRM, sigALRM); 184 btimeout = 0; 185 while (*s) { 186 if (setjmp(timeoutbuf)) { 187 biz22_abort(); 188 break; 189 } 190 alarm(number(value(DIALTIMEOUT))); 191 read(FD, &c, 1); 192 alarm(0); 193 c &= 0177; 194 if (c != *s++) 195 return (0); 196 } 197 signal(SIGALRM, f); 198 return (btimeout == 0); 199 } 200