df.c revision 88276 
1/*	$OpenBSD: df.c,v 1.5 2001/10/24 18:38:58 millert 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. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/usr.bin/tip/libacu/df.c 88276 2001-12-20 14:25:46Z markm $");
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)df.c	8.1 (Berkeley) 6/6/93";
43static char rcsid[] = "$OpenBSD: df.c,v 1.5 2001/10/24 18:38:58 millert Exp $";
44#endif
45#endif /* not lint */
46
47/*
48 * Dial the DF02-AC or DF03-AC
49 */
50
51#include "tip.h"
52
53static jmp_buf Sjbuf;
54static void timeout();
55
56int
57df02_dialer(num, acu)
58	char *num, *acu;
59{
60
61	return (df_dialer(num, acu, 0));
62}
63
64int
65df03_dialer(num, acu)
66	char *num, *acu;
67{
68
69	return (df_dialer(num, acu, 1));
70}
71
72int
73df_dialer(num, acu, df03)
74	char *num, *acu;
75	int df03;
76{
77	int f = FD;
78	struct termios cntrl;
79	int speed = 0;
80	char c = '\0';
81
82	tcgetattr(f, &cntrl);
83	cntrl.c_cflag |= HUPCL;
84	tcsetattr(f, TCSANOW, &cntrl);
85	if (setjmp(Sjbuf)) {
86		printf("connection timed out\r\n");
87		df_disconnect();
88		return (0);
89	}
90	if (boolean(value(VERBOSE)))
91		printf("\ndialing...");
92	fflush(stdout);
93#ifdef TIOCMSET
94	if (df03) {
95		int st = TIOCM_ST;	/* secondary Transmit flag */
96
97		tcgetattr(f, &cntrl);
98		speed = cfgetospeed(&cntrl);
99		if (speed != B1200) {	/* must dial at 1200 baud */
100			cfsetospeed(&cntrl, B1200);
101			cfsetispeed(&cntrl, B1200);
102			tcsetattr(f, TCSAFLUSH, &cntrl);
103			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
104		} else
105			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
106	}
107#endif
108	signal(SIGALRM, timeout);
109	alarm(5 * strlen(num) + 10);
110	tcflush(f, TCIOFLUSH);
111	write(f, "\001", 1);
112	sleep(1);
113	write(f, "\002", 1);
114	write(f, num, strlen(num));
115	read(f, &c, 1);
116#ifdef TIOCMSET
117	if (df03 && speed != B1200) {
118		cfsetospeed(&cntrl, speed);
119		cfsetispeed(&cntrl, speed);
120		tcsetattr(f, TCSAFLUSH, &cntrl);
121	}
122#endif
123	return (c == 'A');
124}
125
126void
127df_disconnect()
128{
129	write(FD, "\001", 1);
130	sleep(1);
131	tcflush(FD, TCIOFLUSH);
132}
133
134
135void
136df_abort()
137{
138
139	df_disconnect();
140}
141
142
143static void
144timeout()
145{
146
147	longjmp(Sjbuf, 1);
148}
149