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 <sys/cdefs.h>
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)biz31.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] = "$OpenBSD: biz31.c,v 1.10 2006/03/17 19:17:13 moritz Exp $";
40 #endif
41 #endif /* not lint */
42
43 #include "tip.h"
44
45 #define MAXRETRY 3 /* sync up retry count */
46 #define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */
47
48 static int biz_dialer(char *, char *);
49 static int bizsync(int);
50 static int echo(char *);
51 static void sigALRM(int);
52 static int detect(char *);
53 static int flush(char *);
54 static int bizsync(int);
55
56 static int timeout = 0;
57 static jmp_buf timeoutbuf;
58
59 /*
60 * Dial up on a BIZCOMP Model 1031 with either
61 * tone dialing (mod = "f")
62 * pulse dialing (mod = "w")
63 */
64 static int
biz_dialer(char * num,char * mod)65 biz_dialer(char *num, char *mod)
66 {
67 int connected = 0;
68
69 if (!bizsync(FD)) {
70 logent(value(HOST), "", "biz", "out of sync");
71 printf("bizcomp out of sync\n");
72 delock(uucplock);
73 exit(0);
74 }
75 if (boolean(value(VERBOSE)))
76 printf("\nstarting call...");
77 echo("#\rk$\r$\n"); /* disable auto-answer */
78 echo("$>$.$ #\r"); /* tone/pulse dialing */
79 echo(mod);
80 echo("$\r$\n");
81 echo("$>$.$ #\re$ "); /* disconnection sequence */
82 echo(DISCONNECT_CMD);
83 echo("\r$\n$\r$\n");
84 echo("$>$.$ #\rr$ "); /* repeat dial */
85 echo(num);
86 echo("\r$\n");
87 if (boolean(value(VERBOSE)))
88 printf("ringing...");
89 /*
90 * The reply from the BIZCOMP should be:
91 * `^G NO CONNECTION\r\n^G\r\n' failure
92 * ` CONNECTION\r\n^G' success
93 */
94 connected = detect(" ");
95 #ifdef ACULOG
96 if (timeout) {
97 char line[80];
98
99 (void)snprintf(line, sizeof line, "%ld second dial timeout",
100 number(value(DIALTIMEOUT)));
101 logent(value(HOST), num, "biz", line);
102 }
103 #endif
104 if (!connected)
105 flush(" NO CONNECTION\r\n\07\r\n");
106 else
107 flush("CONNECTION\r\n\07");
108 if (timeout)
109 biz31_disconnect(); /* insurance */
110 return (connected);
111 }
112
113 int
biz31w_dialer(char * num,char * acu)114 biz31w_dialer(char *num, char *acu)
115 {
116 return (biz_dialer(num, "w"));
117 }
118
119 int
biz31f_dialer(char * num,char * acu)120 biz31f_dialer(char *num, char *acu)
121 {
122 return (biz_dialer(num, "f"));
123 }
124
125 void
biz31_disconnect(void)126 biz31_disconnect(void)
127 {
128 write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1);
129 sleep(2);
130 tcflush(FD, TCIOFLUSH);
131 }
132
133 void
biz31_abort(void)134 biz31_abort(void)
135 {
136 write(FD, "\33", 1);
137 }
138
139 static int
echo(char * s)140 echo(char *s)
141 {
142 char c;
143
144 while (c = *s++) switch (c) {
145
146 case '$':
147 read(FD, &c, 1);
148 s++;
149 break;
150
151 case '#':
152 c = *s++;
153 write(FD, &c, 1);
154 break;
155
156 default:
157 write(FD, &c, 1);
158 read(FD, &c, 1);
159 }
160 }
161
162 /*ARGSUSED*/
163 static void
sigALRM(int signo)164 sigALRM(int signo)
165 {
166 timeout = 1;
167 longjmp(timeoutbuf, 1);
168 }
169
170 static int
detect(char * s)171 detect(char *s)
172 {
173 sig_t f;
174 char c;
175
176 f = signal(SIGALRM, sigALRM);
177 timeout = 0;
178 while (*s) {
179 if (setjmp(timeoutbuf)) {
180 printf("\07timeout waiting for reply\n");
181 biz31_abort();
182 break;
183 }
184 alarm(number(value(DIALTIMEOUT)));
185 read(FD, &c, 1);
186 alarm(0);
187 if (c != *s++)
188 break;
189 }
190 signal(SIGALRM, f);
191 return (timeout == 0);
192 }
193
194 static int
flush(char * s)195 flush(char *s)
196 {
197 sig_t f;
198 char c;
199
200 f = signal(SIGALRM, sigALRM);
201 while (*s++) {
202 if (setjmp(timeoutbuf))
203 break;
204 alarm(10);
205 read(FD, &c, 1);
206 alarm(0);
207 }
208 signal(SIGALRM, f);
209 timeout = 0; /* guard against disconnection */
210 }
211
212 /*
213 * This convoluted piece of code attempts to get
214 * the bizcomp in sync. If you don't have the capacity or nread
215 * call there are gory ways to simulate this.
216 */
217 static int
bizsync(int fd)218 bizsync(int fd)
219 {
220 #ifdef FIOCAPACITY
221 struct capacity b;
222 # define chars(b) ((b).cp_nbytes)
223 # define IOCTL FIOCAPACITY
224 #endif
225 #ifdef FIONREAD
226 long b;
227 # define chars(b) (b)
228 # define IOCTL FIONREAD
229 #endif
230 int already = 0;
231 char buf[10];
232
233 retry:
234 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0)
235 tcflush(FD, TCIOFLUSH);
236 write(fd, "\rp>\r", 4);
237 sleep(1);
238 if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) {
239 if (chars(b) != 10) {
240 nono:
241 if (already > MAXRETRY)
242 return (0);
243 write(fd, DISCONNECT_CMD, 4);
244 sleep(2);
245 already++;
246 goto retry;
247 } else {
248 read(fd, buf, 10);
249 if (strncmp(buf, "p >\r\n\r\n>", 8))
250 goto nono;
251 }
252 }
253 return (1);
254 }
255