biz31.c revision 1.1
1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "@(#)biz31.c 5.4 (Berkeley) 6/1/90"; 36 #endif /* not lint */ 37 38 #include "tip.h" 39 40 #define MAXRETRY 3 /* sync up retry count */ 41 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */ 42 43 static void sigALRM(); 44 static int timeout = 0; 45 static jmp_buf timeoutbuf; 46 47 /* 48 * Dial up on a BIZCOMP Model 1031 with either 49 * tone dialing (mod = "f") 50 * pulse dialing (mod = "w") 51 */ 52 static int 53 biz_dialer(num, mod) 54 char *num, *mod; 55 { 56 register int connected = 0; 57 58 if (!bizsync(FD)) { 59 logent(value(HOST), "", "biz", "out of sync"); 60 printf("bizcomp out of sync\n"); 61 delock(uucplock); 62 exit(0); 63 } 64 if (boolean(value(VERBOSE))) 65 printf("\nstarting call..."); 66 echo("#\rk$\r$\n"); /* disable auto-answer */ 67 echo("$>$.$ #\r"); /* tone/pulse dialing */ 68 echo(mod); 69 echo("$\r$\n"); 70 echo("$>$.$ #\re$ "); /* disconnection sequence */ 71 echo(DISCONNECT_CMD); 72 echo("\r$\n$\r$\n"); 73 echo("$>$.$ #\rr$ "); /* repeat dial */ 74 echo(num); 75 echo("\r$\n"); 76 if (boolean(value(VERBOSE))) 77 printf("ringing..."); 78 /* 79 * The reply from the BIZCOMP should be: 80 * `^G NO CONNECTION\r\n^G\r\n' failure 81 * ` CONNECTION\r\n^G' success 82 */ 83 connected = detect(" "); 84 #ifdef ACULOG 85 if (timeout) { 86 char line[80]; 87 88 sprintf(line, "%d second dial timeout", 89 number(value(DIALTIMEOUT))); 90 logent(value(HOST), num, "biz", line); 91 } 92 #endif 93 if (!connected) 94 flush(" NO CONNECTION\r\n\07\r\n"); 95 else 96 flush("CONNECTION\r\n\07"); 97 if (timeout) 98 biz31_disconnect(); /* insurance */ 99 return (connected); 100 } 101 102 biz31w_dialer(num, acu) 103 char *num, *acu; 104 { 105 106 return (biz_dialer(num, "w")); 107 } 108 109 biz31f_dialer(num, acu) 110 char *num, *acu; 111 { 112 113 return (biz_dialer(num, "f")); 114 } 115 116 biz31_disconnect() 117 { 118 119 write(FD, DISCONNECT_CMD, 4); 120 sleep(2); 121 ioctl(FD, TIOCFLUSH); 122 } 123 124 biz31_abort() 125 { 126 127 write(FD, "\33", 1); 128 } 129 130 static int 131 echo(s) 132 register char *s; 133 { 134 char c; 135 136 while (c = *s++) switch (c) { 137 138 case '$': 139 read(FD, &c, 1); 140 s++; 141 break; 142 143 case '#': 144 c = *s++; 145 write(FD, &c, 1); 146 break; 147 148 default: 149 write(FD, &c, 1); 150 read(FD, &c, 1); 151 } 152 } 153 154 static void 155 sigALRM() 156 { 157 158 timeout = 1; 159 longjmp(timeoutbuf, 1); 160 } 161 162 static int 163 detect(s) 164 register char *s; 165 { 166 sig_t f; 167 char c; 168 169 f = signal(SIGALRM, sigALRM); 170 timeout = 0; 171 while (*s) { 172 if (setjmp(timeoutbuf)) { 173 printf("\07timeout waiting for reply\n"); 174 biz31_abort(); 175 break; 176 } 177 alarm(number(value(DIALTIMEOUT))); 178 read(FD, &c, 1); 179 alarm(0); 180 if (c != *s++) 181 break; 182 } 183 signal(SIGALRM, f); 184 return (timeout == 0); 185 } 186 187 static int 188 flush(s) 189 register char *s; 190 { 191 sig_t f; 192 char c; 193 194 f = signal(SIGALRM, sigALRM); 195 while (*s++) { 196 if (setjmp(timeoutbuf)) 197 break; 198 alarm(10); 199 read(FD, &c, 1); 200 alarm(0); 201 } 202 signal(SIGALRM, f); 203 timeout = 0; /* guard against disconnection */ 204 } 205 206 /* 207 * This convoluted piece of code attempts to get 208 * the bizcomp in sync. If you don't have the capacity or nread 209 * call there are gory ways to simulate this. 210 */ 211 static int 212 bizsync(fd) 213 { 214 #ifdef FIOCAPACITY 215 struct capacity b; 216 # define chars(b) ((b).cp_nbytes) 217 # define IOCTL FIOCAPACITY 218 #endif 219 #ifdef FIONREAD 220 long b; 221 # define chars(b) (b) 222 # define IOCTL FIONREAD 223 #endif 224 register int already = 0; 225 char buf[10]; 226 227 retry: 228 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) 229 ioctl(fd, TIOCFLUSH); 230 write(fd, "\rp>\r", 4); 231 sleep(1); 232 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) { 233 if (chars(b) != 10) { 234 nono: 235 if (already > MAXRETRY) 236 return (0); 237 write(fd, DISCONNECT_CMD, 4); 238 sleep(2); 239 already++; 240 goto retry; 241 } else { 242 read(fd, buf, 10); 243 if (strncmp(buf, "p >\r\n\r\n>", 8)) 244 goto nono; 245 } 246 } 247 return (1); 248 } 249
Indexes created Wed Sep 24 14:09:57 GMT 2025