1/*	$OpenBSD: v3451.c,v 1.9 2006/03/17 19:17:13 moritz Exp $	*/
2/*	$NetBSD: v3451.c,v 1.6 1997/02/11 09:24:20 mrg Exp $	*/
3
4/*
5 * Copyright (c) 1983, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)v3451.c	8.1 (Berkeley) 6/6/93";
39static const char rcsid[] = "$OpenBSD: v3451.c,v 1.9 2006/03/17 19:17:13 moritz Exp $";
40#endif
41#endif /* not lint */
42
43/*
44 * Routines for calling up on a Vadic 3451 Modem
45 */
46#include "tip.h"
47
48static	jmp_buf Sjbuf;
49
50static void	vawrite(char *, int);
51static int	expect(char *);
52static void	alarmtr(int);
53static int	notin(char *, char *);
54static int	prefix(char *, char *);
55
56int
57v3451_dialer(char *num, char *acu)
58{
59	sig_t func;
60	int ok;
61	int slow = number(value(BAUDRATE)) < 1200;
62	char phone[50];
63	struct termios cntrl;
64
65	/*
66	 * Get in synch
67	 */
68	vawrite("I\r", 1 + slow);
69	vawrite("I\r", 1 + slow);
70	vawrite("I\r", 1 + slow);
71	vawrite("\005\r", 2 + slow);
72	if (!expect("READY")) {
73		printf("can't synchronize with vadic 3451\n");
74#ifdef ACULOG
75		logent(value(HOST), num, "vadic", "can't synch up");
76#endif
77		return (0);
78	}
79	tcgetattr(FD, &cntrl);
80	term.c_cflag |= HUPCL;
81	tcsetattr(FD, TCSANOW, &cntrl);
82	sleep(1);
83	vawrite("D\r", 2 + slow);
84	if (!expect("NUMBER?")) {
85		printf("Vadic will not accept dial command\n");
86#ifdef ACULOG
87		logent(value(HOST), num, "vadic", "will not accept dial");
88#endif
89		return (0);
90	}
91	(void)snprintf(phone, sizeof phone, "%s\r", num);
92	vawrite(phone, 1 + slow);
93	if (!expect(phone)) {
94		printf("Vadic will not accept phone number\n");
95#ifdef ACULOG
96		logent(value(HOST), num, "vadic", "will not accept number");
97#endif
98		return (0);
99	}
100	func = signal(SIGINT,SIG_IGN);
101	/*
102	 * You cannot interrupt the Vadic when its dialing;
103	 * even dropping DTR does not work (definitely a
104	 * brain damaged design).
105	 */
106	vawrite("\r", 1 + slow);
107	vawrite("\r", 1 + slow);
108	if (!expect("DIALING:")) {
109		printf("Vadic failed to dial\n");
110#ifdef ACULOG
111		logent(value(HOST), num, "vadic", "failed to dial");
112#endif
113		return (0);
114	}
115	if (boolean(value(VERBOSE)))
116		printf("\ndialing...");
117	ok = expect("ON LINE");
118	signal(SIGINT, func);
119	if (!ok) {
120		printf("call failed\n");
121#ifdef ACULOG
122		logent(value(HOST), num, "vadic", "call failed");
123#endif
124		return (0);
125	}
126	tcflush(FD, TCIOFLUSH);
127	return (1);
128}
129
130void
131v3451_disconnect(void)
132{
133	close(FD);
134}
135
136void
137v3451_abort(void)
138{
139	close(FD);
140}
141
142static void
143vawrite(char *cp, int delay)
144{
145	for (; *cp; sleep(delay), cp++)
146		write(FD, cp, 1);
147}
148
149static int
150expect(char *cp)
151{
152	char buf[300];
153	char *rp = buf;
154	int timeout = 30, online = 0;
155
156	if (strcmp(cp, "\"\"") == 0)
157		return (1);
158	*rp = 0;
159	/*
160	 * If we are waiting for the Vadic to complete
161	 * dialing and get a connection, allow more time
162	 * Unfortunately, the Vadic times out 24 seconds after
163	 * the last digit is dialed
164	 */
165	online = strcmp(cp, "ON LINE") == 0;
166	if (online)
167		timeout = number(value(DIALTIMEOUT));
168	signal(SIGALRM, alarmtr);
169	if (setjmp(Sjbuf))
170		return (0);
171	alarm(timeout);
172	while (notin(cp, buf) && rp < buf + sizeof (buf) - 1) {
173		if (online && notin("FAILED CALL", buf) == 0)
174			return (0);
175		if (read(FD, rp, 1) < 0) {
176			alarm(0);
177			return (0);
178		}
179		if (*rp &= 0177)
180			rp++;
181		*rp = '\0';
182	}
183	alarm(0);
184	return (1);
185}
186
187/*ARGSUSED*/
188static void
189alarmtr(int signo)
190{
191	longjmp(Sjbuf, 1);
192}
193
194static int
195notin(char *sh, char *lg)
196{
197	for (; *lg; lg++)
198		if (prefix(sh, lg))
199			return (0);
200	return (1);
201}
202
203static int
204prefix(char *s1, char *s2)
205{
206	char c;
207
208	while ((c = *s1++) == *s2++)
209		if (c == '\0')
210			return (1);
211	return (c == '\0');
212}
213