biz31.c revision 1.9
1 /* $NetBSD: biz31.c,v 1.9 2006/04/03 00:51:14 perry 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 1.9 2006/04/03 00:51:14 perry Exp $"); 38 #endif /* not lint */ 39 40 #include "tip.h" 41 42 #define MAXRETRY 3 /* sync up retry count */ 43 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */ 44 45 static void sigALRM(); 46 static int timeout = 0; 47 static jmp_buf timeoutbuf; 48 49 /* 50 * Dial up on a BIZCOMP Model 1031 with either 51 * tone dialing (mod = "f") 52 * pulse dialing (mod = "w") 53 */ 54 static int 55 biz_dialer(char *num, char *mod) 56 { 57 int connected = 0; 58 59 if (!bizsync(FD)) { 60 logent(value(HOST), "", "biz", "out of sync"); 61 printf("bizcomp out of sync\n"); 62 delock(uucplock); 63 exit(0); 64 } 65 if (boolean(value(VERBOSE))) 66 printf("\nstarting call..."); 67 echo("#\rk$\r$\n"); /* disable auto-answer */ 68 echo("$>$.$ #\r"); /* tone/pulse dialing */ 69 echo(mod); 70 echo("$\r$\n"); 71 echo("$>$.$ #\re$ "); /* disconnection sequence */ 72 echo(DISCONNECT_CMD); 73 echo("\r$\n$\r$\n"); 74 echo("$>$.$ #\rr$ "); /* repeat dial */ 75 echo(num); 76 echo("\r$\n"); 77 if (boolean(value(VERBOSE))) 78 printf("ringing..."); 79 /* 80 * The reply from the BIZCOMP should be: 81 * `^G NO CONNECTION\r\n^G\r\n' failure 82 * ` CONNECTION\r\n^G' success 83 */ 84 connected = detect(" "); 85 #ifdef ACULOG 86 if (timeout) { 87 char line[80]; 88 89 (void)snprintf(line, sizeof line, "%d second dial timeout", 90 number(value(DIALTIMEOUT))); 91 logent(value(HOST), num, "biz", line); 92 } 93 #endif 94 if (!connected) 95 flush(" NO CONNECTION\r\n\07\r\n"); 96 else 97 flush("CONNECTION\r\n\07"); 98 if (timeout) 99 biz31_disconnect(); /* insurance */ 100 return (connected); 101 } 102 103 biz31w_dialer(char *num, char *acu) 104 { 105 106 return (biz_dialer(num, "w")); 107 } 108 109 biz31f_dialer(char *num, char *acu) 110 { 111 112 return (biz_dialer(num, "f")); 113 } 114 115 biz31_disconnect(void) 116 { 117 118 write(FD, DISCONNECT_CMD, 4); 119 sleep(2); 120 tcflush(FD, TCIOFLUSH); 121 } 122 123 biz31_abort(void) 124 { 125 126 write(FD, "\33", 1); 127 } 128 129 static int 130 echo(char *s) 131 { 132 char c; 133 134 while (c = *s++) switch (c) { 135 case '$': 136 read(FD, &c, 1); 137 s++; 138 break; 139 140 case '#': 141 c = *s++; 142 write(FD, &c, 1); 143 break; 144 145 default: 146 write(FD, &c, 1); 147 read(FD, &c, 1); 148 } 149 } 150 151 static void 152 sigALRM(void) 153 { 154 155 timeout = 1; 156 longjmp(timeoutbuf, 1); 157 } 158 159 static int 160 detect(char *s) 161 { 162 sig_t f; 163 char c; 164 165 f = signal(SIGALRM, sigALRM); 166 timeout = 0; 167 while (*s) { 168 if (setjmp(timeoutbuf)) { 169 printf("\07timeout waiting for reply\n"); 170 biz31_abort(); 171 break; 172 } 173 alarm(number(value(DIALTIMEOUT))); 174 read(FD, &c, 1); 175 alarm(0); 176 if (c != *s++) 177 break; 178 } 179 signal(SIGALRM, f); 180 return (timeout == 0); 181 } 182 183 static int 184 flush(char *s) 185 { 186 sig_t f; 187 char c; 188 189 f = signal(SIGALRM, sigALRM); 190 while (*s++) { 191 if (setjmp(timeoutbuf)) 192 break; 193 alarm(10); 194 read(FD, &c, 1); 195 alarm(0); 196 } 197 signal(SIGALRM, f); 198 timeout = 0; /* guard against disconnection */ 199 } 200 201 /* 202 * This convoluted piece of code attempts to get 203 * the bizcomp in sync. If you don't have the capacity or nread 204 * call there are gory ways to simulate this. 205 */ 206 static int 207 bizsync(int fd) 208 { 209 #ifdef FIOCAPACITY 210 struct capacity b; 211 # define chars(b) ((b).cp_nbytes) 212 # define IOCTL FIOCAPACITY 213 #endif 214 #ifdef FIONREAD 215 long b; 216 # define chars(b) (b) 217 # define IOCTL FIONREAD 218 #endif 219 int already = 0; 220 char buf[10]; 221 222 retry: 223 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) 224 tcflush(FD, TCIOFLUSH); 225 write(fd, "\rp>\r", 4); 226 sleep(1); 227 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) { 228 if (chars(b) != 10) { 229 nono: 230 if (already > MAXRETRY) 231 return (0); 232 write(fd, DISCONNECT_CMD, 4); 233 sleep(2); 234 already++; 235 goto retry; 236 } else { 237 read(fd, buf, 10); 238 if (strncmp(buf, "p >\r\n\r\n>", 8)) 239 goto nono; 240 } 241 } 242 return (1); 243 } 244
Indexes created Fri Sep 26 08:10:20 GMT 2025