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 * 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[] = "@(#)df.c	8.1 (Berkeley) 6/6/93";
39static const char rcsid[] = "$OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $";
40#endif
41#endif /* not lint */
42
43/*
44 * Dial the DF02-AC or DF03-AC
45 */
46
47#include "tip.h"
48
49static jmp_buf Sjbuf;
50
51static int	df_dialer(char *, char *, int);
52static void	alrm_timeout(int);
53
54int
55df02_dialer(char *num, char *acu)
56{
57	return (df_dialer(num, acu, 0));
58}
59
60int
61df03_dialer(char *num, char *acu)
62{
63	return (df_dialer(num, acu, 1));
64}
65
66static int
67df_dialer(char *num, char *acu, int df03)
68{
69	int f = FD;
70	struct termios cntrl;
71	int speed = 0;
72	char c = '\0';
73
74	tcgetattr(f, &cntrl);
75	cntrl.c_cflag |= HUPCL;
76	tcsetattr(f, TCSANOW, &cntrl);
77	if (setjmp(Sjbuf)) {
78		printf("connection timed out\r\n");
79		df_disconnect();
80		return (0);
81	}
82	if (boolean(value(VERBOSE)))
83		printf("\ndialing...");
84	fflush(stdout);
85#ifdef TIOCMSET
86	if (df03) {
87		int st = TIOCM_ST;	/* secondary Transmit flag */
88
89		tcgetattr(f, &cntrl);
90		speed = cfgetospeed(&cntrl);
91		if (speed != B1200) {	/* must dial at 1200 baud */
92			cfsetospeed(&cntrl, B1200);
93			cfsetispeed(&cntrl, B1200);
94			tcsetattr(f, TCSAFLUSH, &cntrl);
95			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
96		} else
97			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
98	}
99#endif
100	signal(SIGALRM, alrm_timeout);
101	alarm(5 * strlen(num) + 10);
102	tcflush(f, TCIOFLUSH);
103	write(f, "\001", 1);
104	sleep(1);
105	write(f, "\002", 1);
106	write(f, num, strlen(num));
107	read(f, &c, 1);
108#ifdef TIOCMSET
109	if (df03 && speed != B1200) {
110		cfsetospeed(&cntrl, speed);
111		cfsetispeed(&cntrl, speed);
112		tcsetattr(f, TCSAFLUSH, &cntrl);
113	}
114#endif
115	return (c == 'A');
116}
117
118void
119df_disconnect(void)
120{
121	write(FD, "\001", 1);
122	sleep(1);
123	tcflush(FD, TCIOFLUSH);
124}
125
126void
127df_abort(void)
128{
129	df_disconnect();
130}
131
132/*ARGSUSED*/
133static void
134alrm_timeout(int signo)
135{
136	longjmp(Sjbuf, 1);
137}
138