1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. 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 8.1 (Berkeley) 6/6/93"; 36 #endif /* not lint */ 37 38 #include "tipconf.h" 39 #include "tip.h" 40 41 #define MAXRETRY 3 /* sync up retry count */ 42 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */ 43 44 static void sigALRM(); 45 static int timeout = 0; 46 static jmp_buf timeoutbuf; 47 48 /* 49 * Dial up on a BIZCOMP Model 1031 with either 50 * tone dialing (mod = "f") 51 * pulse dialing (mod = "w") 52 */ 53 static int 54 biz_dialer(num, mod) 55 char *num, *mod; 56 { 57 register 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$\n"); 77 if (boolean(value(VERBOSE))) 78 printf("ringing..."); 79 /* 80 * The reply from the BIZCOMP should be: 81 * `^G NO CONNECTION\r\n^G\r\n' failure 82 * ` CONNECTION\r\n^G' success 83 */ 84 connected = detect(" "); 85 #if ACULOG 86 if (timeout) { 87 char line[80]; 88 89 sprintf(line, "%d second dial timeout", 90 number(value(DIALTIMEOUT))); 91 logent(value(HOST), num, "biz", line); 92 } 93 #endif 94 if (!connected) 95 flush(" NO CONNECTION\r\n\07\r\n"); 96 else 97 flush("CONNECTION\r\n\07"); 98 if (timeout) 99 biz31_disconnect(); /* insurance */ 100 return (connected); 101 } 102 103 biz31w_dialer(num, acu) 104 char *num, *acu; 105 { 106 107 return (biz_dialer(num, "w")); 108 } 109 110 biz31f_dialer(num, acu) 111 char *num, *acu; 112 { 113 114 return (biz_dialer(num, "f")); 115 } 116 117 biz31_disconnect() 118 { 119 120 write(FD, DISCONNECT_CMD, 4); 121 sleep(2); 122 ioctl(FD, TIOCFLUSH); 123 } 124 125 biz31_abort() 126 { 127 128 write(FD, "\33", 1); 129 } 130 131 static int 132 echo(s) 133 register char *s; 134 { 135 char c; 136 137 while (c = *s++) switch (c) { 138 139 case '$': 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 register 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 register 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 register int already = 0; 226 char buf[10]; 227 228 retry: 229 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) 230 ioctl(fd, TIOCFLUSH); 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