biz31.c revision 1.8
1 /* $NetBSD: biz31.c,v 1.8 2003/08/07 11:16:21 agc 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[] = "@(#)biz31.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: biz31.c,v 1.8 2003/08/07 11:16:21 agc Exp $"); 38 #endif /* not lint */ 39 40 #include "tip.h" 41 42 #define MAXRETRY 3 /* sync up retry count */ 43 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */ 44 45 static void sigALRM(); 46 static int timeout = 0; 47 static jmp_buf timeoutbuf; 48 49 /* 50 * Dial up on a BIZCOMP Model 1031 with either 51 * tone dialing (mod = "f") 52 * pulse dialing (mod = "w") 53 */ 54 static int 55 biz_dialer(num, mod) 56 char *num, *mod; 57 { 58 int connected = 0; 59 60 if (!bizsync(FD)) { 61 logent(value(HOST), "", "biz", "out of sync"); 62 printf("bizcomp out of sync\n"); 63 delock(uucplock); 64 exit(0); 65 } 66 if (boolean(value(VERBOSE))) 67 printf("\nstarting call..."); 68 echo("#\rk$\r$\n"); /* disable auto-answer */ 69 echo("$>$.$ #\r"); /* tone/pulse dialing */ 70 echo(mod); 71 echo("$\r$\n"); 72 echo("$>$.$ #\re$ "); /* disconnection sequence */ 73 echo(DISCONNECT_CMD); 74 echo("\r$\n$\r$\n"); 75 echo("$>$.$ #\rr$ "); /* repeat dial */ 76 echo(num); 77 echo("\r$\n"); 78 if (boolean(value(VERBOSE))) 79 printf("ringing..."); 80 /* 81 * The reply from the BIZCOMP should be: 82 * `^G NO CONNECTION\r\n^G\r\n' failure 83 * ` CONNECTION\r\n^G' success 84 */ 85 connected = detect(" "); 86 #ifdef ACULOG 87 if (timeout) { 88 char line[80]; 89 90 (void)snprintf(line, sizeof line, "%d second dial timeout", 91 number(value(DIALTIMEOUT))); 92 logent(value(HOST), num, "biz", line); 93 } 94 #endif 95 if (!connected) 96 flush(" NO CONNECTION\r\n\07\r\n"); 97 else 98 flush("CONNECTION\r\n\07"); 99 if (timeout) 100 biz31_disconnect(); /* insurance */ 101 return (connected); 102 } 103 104 biz31w_dialer(num, acu) 105 char *num, *acu; 106 { 107 108 return (biz_dialer(num, "w")); 109 } 110 111 biz31f_dialer(num, acu) 112 char *num, *acu; 113 { 114 115 return (biz_dialer(num, "f")); 116 } 117 118 biz31_disconnect() 119 { 120 121 write(FD, DISCONNECT_CMD, 4); 122 sleep(2); 123 tcflush(FD, TCIOFLUSH); 124 } 125 126 biz31_abort() 127 { 128 129 write(FD, "\33", 1); 130 } 131 132 static int 133 echo(s) 134 char *s; 135 { 136 char c; 137 138 while (c = *s++) switch (c) { 139 case '$': 140 read(FD, &c, 1); 141 s++; 142 break; 143 144 case '#': 145 c = *s++; 146 write(FD, &c, 1); 147 break; 148 149 default: 150 write(FD, &c, 1); 151 read(FD, &c, 1); 152 } 153 } 154 155 static void 156 sigALRM() 157 { 158 159 timeout = 1; 160 longjmp(timeoutbuf, 1); 161 } 162 163 static int 164 detect(s) 165 char *s; 166 { 167 sig_t f; 168 char c; 169 170 f = signal(SIGALRM, sigALRM); 171 timeout = 0; 172 while (*s) { 173 if (setjmp(timeoutbuf)) { 174 printf("\07timeout waiting for reply\n"); 175 biz31_abort(); 176 break; 177 } 178 alarm(number(value(DIALTIMEOUT))); 179 read(FD, &c, 1); 180 alarm(0); 181 if (c != *s++) 182 break; 183 } 184 signal(SIGALRM, f); 185 return (timeout == 0); 186 } 187 188 static int 189 flush(s) 190 char *s; 191 { 192 sig_t f; 193 char c; 194 195 f = signal(SIGALRM, sigALRM); 196 while (*s++) { 197 if (setjmp(timeoutbuf)) 198 break; 199 alarm(10); 200 read(FD, &c, 1); 201 alarm(0); 202 } 203 signal(SIGALRM, f); 204 timeout = 0; /* guard against disconnection */ 205 } 206 207 /* 208 * This convoluted piece of code attempts to get 209 * the bizcomp in sync. If you don't have the capacity or nread 210 * call there are gory ways to simulate this. 211 */ 212 static int 213 bizsync(fd) 214 { 215 #ifdef FIOCAPACITY 216 struct capacity b; 217 # define chars(b) ((b).cp_nbytes) 218 # define IOCTL FIOCAPACITY 219 #endif 220 #ifdef FIONREAD 221 long b; 222 # define chars(b) (b) 223 # define IOCTL FIONREAD 224 #endif 225 int already = 0; 226 char buf[10]; 227 228 retry: 229 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) 230 tcflush(FD, TCIOFLUSH); 231 write(fd, "\rp>\r", 4); 232 sleep(1); 233 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) { 234 if (chars(b) != 10) { 235 nono: 236 if (already > MAXRETRY) 237 return (0); 238 write(fd, DISCONNECT_CMD, 4); 239 sleep(2); 240 already++; 241 goto retry; 242 } else { 243 read(fd, buf, 10); 244 if (strncmp(buf, "p >\r\n\r\n>", 8)) 245 goto nono; 246 } 247 } 248 return (1); 249 } 250
Indexes created Sat Sep 27 14:09:57 GMT 2025