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 * 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__FBSDID("$FreeBSD$");
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)v3451.c	8.1 (Berkeley) 6/6/93";
41static const char rcsid[] = "$OpenBSD: v3451.c,v 1.9 2006/03/17 19:17:13 moritz Exp $";
42#endif
43#endif /* not lint */
44
45/*
46 * Routines for calling up on a Vadic 3451 Modem
47 */
48#include "tip.h"
49
50static	jmp_buf Sjbuf;
51
52static void	vawrite(char *, int);
53static int	expect(char *);
54static void	alarmtr(int);
55static int	notin(char *, char *);
56static int	prefix(char *, char *);
57
58int
59v3451_dialer(char *num, char *acu)
60{
61	sig_t func;
62	int ok;
63	int slow = number(value(BAUDRATE)) < 1200;
64	char phone[50];
65	struct termios cntrl;
66
67	/*
68	 * Get in synch
69	 */
70	vawrite("I\r", 1 + slow);
71	vawrite("I\r", 1 + slow);
72	vawrite("I\r", 1 + slow);
73	vawrite("\005\r", 2 + slow);
74	if (!expect("READY")) {
75		printf("can't synchronize with vadic 3451\n");
76#ifdef ACULOG
77		logent(value(HOST), num, "vadic", "can't synch up");
78#endif
79		return (0);
80	}
81	tcgetattr(FD, &cntrl);
82	term.c_cflag |= HUPCL;
83	tcsetattr(FD, TCSANOW, &cntrl);
84	sleep(1);
85	vawrite("D\r", 2 + slow);
86	if (!expect("NUMBER?")) {
87		printf("Vadic will not accept dial command\n");
88#ifdef ACULOG
89		logent(value(HOST), num, "vadic", "will not accept dial");
90#endif
91		return (0);
92	}
93	(void)snprintf(phone, sizeof phone, "%s\r", num);
94	vawrite(phone, 1 + slow);
95	if (!expect(phone)) {
96		printf("Vadic will not accept phone number\n");
97#ifdef ACULOG
98		logent(value(HOST), num, "vadic", "will not accept number");
99#endif
100		return (0);
101	}
102	func = signal(SIGINT,SIG_IGN);
103	/*
104	 * You cannot interrupt the Vadic when its dialing;
105	 * even dropping DTR does not work (definitely a
106	 * brain damaged design).
107	 */
108	vawrite("\r", 1 + slow);
109	vawrite("\r", 1 + slow);
110	if (!expect("DIALING:")) {
111		printf("Vadic failed to dial\n");
112#ifdef ACULOG
113		logent(value(HOST), num, "vadic", "failed to dial");
114#endif
115		return (0);
116	}
117	if (boolean(value(VERBOSE)))
118		printf("\ndialing...");
119	ok = expect("ON LINE");
120	signal(SIGINT, func);
121	if (!ok) {
122		printf("call failed\n");
123#ifdef ACULOG
124		logent(value(HOST), num, "vadic", "call failed");
125#endif
126		return (0);
127	}
128	tcflush(FD, TCIOFLUSH);
129	return (1);
130}
131
132void
133v3451_disconnect(void)
134{
135	close(FD);
136}
137
138void
139v3451_abort(void)
140{
141	close(FD);
142}
143
144static void
145vawrite(char *cp, int delay)
146{
147	for (; *cp; sleep(delay), cp++)
148		write(FD, cp, 1);
149}
150
151static int
152expect(char *cp)
153{
154	char buf[300];
155	char *rp = buf;
156	int timeout = 30, online = 0;
157
158	if (strcmp(cp, "\"\"") == 0)
159		return (1);
160	*rp = 0;
161	/*
162	 * If we are waiting for the Vadic to complete
163	 * dialing and get a connection, allow more time
164	 * Unfortunately, the Vadic times out 24 seconds after
165	 * the last digit is dialed
166	 */
167	online = strcmp(cp, "ON LINE") == 0;
168	if (online)
169		timeout = number(value(DIALTIMEOUT));
170	signal(SIGALRM, alarmtr);
171	if (setjmp(Sjbuf))
172		return (0);
173	alarm(timeout);
174	while (notin(cp, buf) && rp < buf + sizeof (buf) - 1) {
175		if (online && notin("FAILED CALL", buf) == 0)
176			return (0);
177		if (read(FD, rp, 1) < 0) {
178			alarm(0);
179			return (0);
180		}
181		if (*rp &= 0177)
182			rp++;
183		*rp = '\0';
184	}
185	alarm(0);
186	return (1);
187}
188
189/*ARGSUSED*/
190static void
191alarmtr(int signo)
192{
193	longjmp(Sjbuf, 1);
194}
195
196static int
197notin(char *sh, char *lg)
198{
199	for (; *lg; lg++)
200		if (prefix(sh, lg))
201			return (0);
202	return (1);
203}
204
205static int
206prefix(char *s1, char *s2)
207{
208	char c;
209
210	while ((c = *s1++) == *s2++)
211		if (c == '\0')
212			return (1);
213	return (c == '\0');
214}
215