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