1 /* $OpenBSD: biz31.c,v 1.10 2006/03/17 19:17:13 moritz Exp $ */ 2 /* $NetBSD: biz31.c,v 1.5 1997/02/11 09:24:14 mrg Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1983, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include "tip.h" 36 37 #define MAXRETRY 3 /* sync up retry count */ 38 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */ 39 40 static int biz_dialer(char *, char *); 41 static int bizsync(int); 42 static int echo(char *); 43 static void sigALRM(int); 44 static int detect(char *); 45 static int flush(char *); 46 static int bizsync(int); 47 48 static int timeout = 0; 49 static jmp_buf timeoutbuf; 50 51 /* 52 * Dial up on a BIZCOMP Model 1031 with either 53 * tone dialing (mod = "f") 54 * pulse dialing (mod = "w") 55 */ 56 static int 57 biz_dialer(char *num, char *mod) 58 { 59 int connected = 0; 60 61 if (!bizsync(FD)) { 62 logent(value(HOST), "", "biz", "out of sync"); 63 printf("bizcomp out of sync\n"); 64 delock(uucplock); 65 exit(0); 66 } 67 if (boolean(value(VERBOSE))) 68 printf("\nstarting call..."); 69 echo("#\rk$\r$\n"); /* disable auto-answer */ 70 echo("$>$.$ #\r"); /* tone/pulse dialing */ 71 echo(mod); 72 echo("$\r$\n"); 73 echo("$>$.$ #\re$ "); /* disconnection sequence */ 74 echo(DISCONNECT_CMD); 75 echo("\r$\n$\r$\n"); 76 echo("$>$.$ #\rr$ "); /* repeat dial */ 77 echo(num); 78 echo("\r$\n"); 79 if (boolean(value(VERBOSE))) 80 printf("ringing..."); 81 /* 82 * The reply from the BIZCOMP should be: 83 * `^G NO CONNECTION\r\n^G\r\n' failure 84 * ` CONNECTION\r\n^G' success 85 */ 86 connected = detect(" "); 87 #ifdef ACULOG 88 if (timeout) { 89 char line[80]; 90 91 (void)snprintf(line, sizeof line, "%ld second dial timeout", 92 number(value(DIALTIMEOUT))); 93 logent(value(HOST), num, "biz", line); 94 } 95 #endif 96 if (!connected) 97 flush(" NO CONNECTION\r\n\07\r\n"); 98 else 99 flush("CONNECTION\r\n\07"); 100 if (timeout) 101 biz31_disconnect(); /* insurance */ 102 return (connected); 103 } 104 105 int 106 biz31w_dialer(char *num, char *acu) 107 { 108 return (biz_dialer(num, "w")); 109 } 110 111 int 112 biz31f_dialer(char *num, char *acu) 113 { 114 return (biz_dialer(num, "f")); 115 } 116 117 void 118 biz31_disconnect(void) 119 { 120 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1); 121 sleep(2); 122 tcflush(FD, TCIOFLUSH); 123 } 124 125 void 126 biz31_abort(void) 127 { 128 write(FD, "\33", 1); 129 } 130 131 static int 132 echo(char *s) 133 { 134 char c; 135 136 while (c = *s++) switch (c) { 137 138 case '$': 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 /*ARGSUSED*/ 155 static void 156 sigALRM(int signo) 157 { 158 timeout = 1; 159 longjmp(timeoutbuf, 1); 160 } 161 162 static int 163 detect(char *s) 164 { 165 sig_t f; 166 char c; 167 168 f = signal(SIGALRM, sigALRM); 169 timeout = 0; 170 while (*s) { 171 if (setjmp(timeoutbuf)) { 172 printf("\07timeout waiting for reply\n"); 173 biz31_abort(); 174 break; 175 } 176 alarm(number(value(DIALTIMEOUT))); 177 read(FD, &c, 1); 178 alarm(0); 179 if (c != *s++) 180 break; 181 } 182 signal(SIGALRM, f); 183 return (timeout == 0); 184 } 185 186 static int 187 flush(char *s) 188 { 189 sig_t f; 190 char c; 191 192 f = signal(SIGALRM, sigALRM); 193 while (*s++) { 194 if (setjmp(timeoutbuf)) 195 break; 196 alarm(10); 197 read(FD, &c, 1); 198 alarm(0); 199 } 200 signal(SIGALRM, f); 201 timeout = 0; /* guard against disconnection */ 202 } 203 204 /* 205 * This convoluted piece of code attempts to get 206 * the bizcomp in sync. If you don't have the capacity or nread 207 * call there are gory ways to simulate this. 208 */ 209 static int 210 bizsync(int fd) 211 { 212 #ifdef FIOCAPACITY 213 struct capacity b; 214 # define chars(b) ((b).cp_nbytes) 215 # define IOCTL FIOCAPACITY 216 #endif 217 #ifdef FIONREAD 218 long b; 219 # define chars(b) (b) 220 # define IOCTL FIONREAD 221 #endif 222 int already = 0; 223 char buf[10]; 224 225 retry: 226 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0) 227 tcflush(FD, TCIOFLUSH); 228 write(fd, "\rp>\r", 4); 229 sleep(1); 230 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) { 231 if (chars(b) != 10) { 232 nono: 233 if (already > MAXRETRY) 234 return (0); 235 write(fd, DISCONNECT_CMD, 4); 236 sleep(2); 237 already++; 238 goto retry; 239 } else { 240 read(fd, buf, 10); 241 if (strncmp(buf, "p >\r\n\r\n>", 8)) 242 goto nono; 243 } 244 } 245 return (1); 246 } 247