1/*	$NetBSD: v3451.c,v 1.12 2006/04/03 02:25:27 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
35static char sccsid[] = "@(#)v3451.c	8.1 (Berkeley) 6/6/93";
36#endif
37__RCSID("$NetBSD: v3451.c,v 1.12 2006/04/03 02:25:27 perry Exp $");
38#endif /* not lint */
39
40/*
41 * Routines for calling up on a Vadic 3451 Modem
42 */
43#include "tip.h"
44
45static	jmp_buf Sjbuf;
46
47static	void	alarmtr(int);
48static	int	expect(const char *);
49static	int	notin(const char *, char *);
50static	int	prefix(const char *, char *);
51static	void	vawrite(const char *, int);
52
53int
54/*ARGSUSED*/
55v3451_dialer(char *num, char *acu __unused)
56{
57	sig_t func;
58	int ok;
59	int slow = number(value(BAUDRATE)) < 1200;
60	char phone[50];
61	struct termios cntrl;
62
63	/*
64	 * Get in synch
65	 */
66	vawrite("I\r", 1 + slow);
67	vawrite("I\r", 1 + slow);
68	vawrite("I\r", 1 + slow);
69	vawrite("\005\r", 2 + slow);
70	if (!expect("READY")) {
71		(void)printf("can't synchronize with vadic 3451\n");
72		return (0);
73	}
74	(void)tcgetattr(FD, &cntrl);
75	term.c_cflag |= HUPCL;
76	(void)tcsetattr(FD, TCSANOW, &cntrl);
77	(void)sleep(1);
78	vawrite("D\r", 2 + slow);
79	if (!expect("NUMBER?")) {
80		(void)printf("Vadic will not accept dial command\n");
81		return (0);
82	}
83	(void)snprintf(phone, sizeof phone, "%s\r", num);
84	vawrite(phone, 1 + slow);
85	if (!expect(phone)) {
86		(void)printf("Vadic will not accept phone number\n");
87		return (0);
88	}
89	func = signal(SIGINT,SIG_IGN);
90	/*
91	 * You cannot interrupt the Vadic when its dialing;
92	 * even dropping DTR does not work (definitely a
93	 * brain damaged design).
94	 */
95	vawrite("\r", 1 + slow);
96	vawrite("\r", 1 + slow);
97	if (!expect("DIALING:")) {
98		(void)printf("Vadic failed to dial\n");
99		return (0);
100	}
101	if (boolean(value(VERBOSE)))
102		(void)printf("\ndialing...");
103	ok = expect("ON LINE");
104	(void)signal(SIGINT, func);
105	if (!ok) {
106		(void)printf("call failed\n");
107		return (0);
108	}
109	(void)tcflush(FD, TCIOFLUSH);
110	return (1);
111}
112
113void
114v3451_disconnect(void)
115{
116
117	(void)close(FD);
118}
119
120void
121v3451_abort(void)
122{
123
124	(void)close(FD);
125}
126
127static void
128vawrite(const char *cp, int delay)
129{
130
131	for (/*EMPTY*/; *cp; cp++) {
132		(void)write(FD, cp, 1);
133		(void)sleep((unsigned)delay);
134	}
135}
136
137static int
138expect(const char *cp)
139{
140	char buf[300];
141	char * volatile rp;
142	int volatile timeout;
143	int volatile online;
144
145	rp = buf;
146	timeout = 30;
147	online = 0;
148
149	if (strcmp(cp, "\"\"") == 0)
150		return (1);
151	*rp = 0;
152	/*
153	 * If we are waiting for the Vadic to complete
154	 * dialing and get a connection, allow more time
155	 * Unfortunately, the Vadic times out 24 seconds after
156	 * the last digit is dialed
157	 */
158	online = strcmp(cp, "ON LINE") == 0;
159	if (online)
160		timeout = number(value(DIALTIMEOUT));
161	(void)signal(SIGALRM, alarmtr);
162	if (setjmp(Sjbuf))
163		return (0);
164	(void)alarm((unsigned)timeout);
165	while (notin(cp, buf) && rp < buf + sizeof (buf) - 1) {
166		if (online && notin("FAILED CALL", buf) == 0)
167			return (0);
168		if (read(FD, rp, 1) < 0) {
169			(void)alarm(0);
170			return (0);
171		}
172		if (*rp &= 0177)
173			rp++;
174		*rp = '\0';
175	}
176	(void)alarm(0);
177	return (1);
178}
179
180static void
181/*ARGSUSED*/
182alarmtr(int dummy __unused)
183{
184
185	longjmp(Sjbuf, 1);
186}
187
188static int
189notin(const char *sh, char *lg)
190{
191
192	for (; *lg; lg++)
193		if (prefix(sh, lg))
194			return (0);
195	return (1);
196}
197
198static int
199prefix(const char *s1, char *s2)
200{
201	char c;
202
203	while ((c = *s1++) == *s2++)
204		if (c == '\0')
205			return (1);
206	return (c == '\0');
207}
208