1/*	$OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $	*/
2/*	$NetBSD: df.c,v 1.4 1995/10/29 00:49:51 pk 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 * Dial the DF02-AC or DF03-AC
37 */
38
39#include "tip.h"
40
41static jmp_buf Sjbuf;
42
43static int	df_dialer(char *, char *, int);
44static void	alrm_timeout(int);
45
46int
47df02_dialer(char *num, char *acu)
48{
49	return (df_dialer(num, acu, 0));
50}
51
52int
53df03_dialer(char *num, char *acu)
54{
55	return (df_dialer(num, acu, 1));
56}
57
58static int
59df_dialer(char *num, char *acu, int df03)
60{
61	int f = FD;
62	struct termios cntrl;
63	int speed = 0;
64	char c = '\0';
65
66	tcgetattr(f, &cntrl);
67	cntrl.c_cflag |= HUPCL;
68	tcsetattr(f, TCSANOW, &cntrl);
69	if (setjmp(Sjbuf)) {
70		printf("connection timed out\r\n");
71		df_disconnect();
72		return (0);
73	}
74	if (boolean(value(VERBOSE)))
75		printf("\ndialing...");
76	fflush(stdout);
77#ifdef TIOCMSET
78	if (df03) {
79		int st = TIOCM_ST;	/* secondary Transmit flag */
80
81		tcgetattr(f, &cntrl);
82		speed = cfgetospeed(&cntrl);
83		if (speed != B1200) {	/* must dial at 1200 baud */
84			cfsetospeed(&cntrl, B1200);
85			cfsetispeed(&cntrl, B1200);
86			tcsetattr(f, TCSAFLUSH, &cntrl);
87			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
88		} else
89			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
90	}
91#endif
92	signal(SIGALRM, alrm_timeout);
93	alarm(5 * strlen(num) + 10);
94	tcflush(f, TCIOFLUSH);
95	write(f, "\001", 1);
96	sleep(1);
97	write(f, "\002", 1);
98	write(f, num, strlen(num));
99	read(f, &c, 1);
100#ifdef TIOCMSET
101	if (df03 && speed != B1200) {
102		cfsetospeed(&cntrl, speed);
103		cfsetispeed(&cntrl, speed);
104		tcsetattr(f, TCSAFLUSH, &cntrl);
105	}
106#endif
107	return (c == 'A');
108}
109
110void
111df_disconnect(void)
112{
113	write(FD, "\001", 1);
114	sleep(1);
115	tcflush(FD, TCIOFLUSH);
116}
117
118void
119df_abort(void)
120{
121	df_disconnect();
122}
123
124/*ARGSUSED*/
125static void
126alrm_timeout(int signo)
127{
128	longjmp(Sjbuf, 1);
129}
130