aboutsummaryrefslogtreecommitdiffstats
path: root/usr.bin/tip/libacu/df.c
blob: 2fa0a0b320a1c9cf5e657cf2c47ad9fa0d7481f2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
/*	$OpenBSD: df.c,v 1.5 2001/10/24 18:38:58 millert Exp $	*/
/*	$NetBSD: df.c,v 1.4 1995/10/29 00:49:51 pk Exp $	*/

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
#if 0
static char sccsid[] = "@(#)df.c	8.1 (Berkeley) 6/6/93";
#endif
static char rcsid[] = "$OpenBSD: df.c,v 1.5 2001/10/24 18:38:58 millert Exp $";
#endif /* not lint */

/*
 * Dial the DF02-AC or DF03-AC
 */

#include "tip.h"

static jmp_buf Sjbuf;
static void timeout();

int
df02_dialer(num, acu)
	char *num, *acu;
{

	return (df_dialer(num, acu, 0));
}

int
df03_dialer(num, acu)
	char *num, *acu;
{

	return (df_dialer(num, acu, 1));
}

int
df_dialer(num, acu, df03)
	char *num, *acu;
	int df03;
{
	int f = FD;
	struct termios cntrl;
	int speed = 0;
	char c = '\0';

	tcgetattr(f, &cntrl);
	cntrl.c_cflag |= HUPCL;
	tcsetattr(f, TCSANOW, &cntrl);
	if (setjmp(Sjbuf)) {
		printf("connection timed out\r\n");
		df_disconnect();
		return (0);
	}
	if (boolean(value(VERBOSE)))
		printf("\ndialing...");
	fflush(stdout);
#ifdef TIOCMSET
	if (df03) {
		int st = TIOCM_ST;	/* secondary Transmit flag */

		tcgetattr(f, &cntrl);
		speed = cfgetospeed(&cntrl);
		if (speed != B1200) {	/* must dial at 1200 baud */
			cfsetospeed(&cntrl, B1200);
			cfsetispeed(&cntrl, B1200);
			tcsetattr(f, TCSAFLUSH, &cntrl);
			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
		} else
			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
	}
#endif
	signal(SIGALRM, timeout);
	alarm(5 * strlen(num) + 10);
	tcflush(f, TCIOFLUSH);
	write(f, "\001", 1);
	sleep(1);
	write(f, "\002", 1);
	write(f, num, strlen(num));
	read(f, &c, 1);
#ifdef TIOCMSET
	if (df03 && speed != B1200) {
		cfsetospeed(&cntrl, speed);
		cfsetispeed(&cntrl, speed);
		tcsetattr(f, TCSAFLUSH, &cntrl);
	}
#endif
	return (c == 'A');
}

void
df_disconnect()
{
	write(FD, "\001", 1);
	sleep(1);
	tcflush(FD, TCIOFLUSH);
}


void
df_abort()
{

	df_disconnect();
}


static void
timeout()
{

	longjmp(Sjbuf, 1);
}