df.c revision 113163 
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 113163 2003-04-06 08:30:25Z imp $");
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)df.c	8.1 (Berkeley) 6/6/93";
43static char rcsid[] = "$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();
55static void df_disconnect(void);
56
57int
58df02_dialer(num, acu)
59	char *num, *acu;
60{
61
62	return (df_dialer(num, acu, 0));
63}
64
65int
66df03_dialer(num, acu)
67	char *num, *acu;
68{
69
70	return (df_dialer(num, acu, 1));
71}
72
73int
74df_dialer(num, acu, df03)
75	char *num, *acu;
76	int df03;
77{
78	int f = FD;
79	struct termios cntrl;
80	int speed = 0;
81	char c = '\0';
82
83	tcgetattr(f, &cntrl);
84	cntrl.c_cflag |= HUPCL;
85	tcsetattr(f, TCSANOW, &cntrl);
86	if (setjmp(Sjbuf)) {
87		printf("connection timed out\r\n");
88		df_disconnect();
89		return (0);
90	}
91	if (boolean(value(VERBOSE)))
92		printf("\ndialing...");
93	fflush(stdout);
94#ifdef TIOCMSET
95	if (df03) {
96		int st = TIOCM_ST;	/* secondary Transmit flag */
97
98		tcgetattr(f, &cntrl);
99		speed = cfgetospeed(&cntrl);
100		if (speed != B1200) {	/* must dial at 1200 baud */
101			cfsetospeed(&cntrl, B1200);
102			cfsetispeed(&cntrl, B1200);
103			tcsetattr(f, TCSAFLUSH, &cntrl);
104			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
105		} else
106			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
107	}
108#endif
109	signal(SIGALRM, timeout);
110	alarm(5 * strlen(num) + 10);
111	tcflush(f, TCIOFLUSH);
112	write(f, "\001", 1);
113	sleep(1);
114	write(f, "\002", 1);
115	write(f, num, strlen(num));
116	read(f, &c, 1);
117#ifdef TIOCMSET
118	if (df03 && speed != B1200) {
119		cfsetospeed(&cntrl, speed);
120		cfsetispeed(&cntrl, speed);
121		tcsetattr(f, TCSAFLUSH, &cntrl);
122	}
123#endif
124	return (c == 'A');
125}
126
127static void
128df_disconnect(void)
129{
130	write(FD, "\001", 1);
131	sleep(1);
132	tcflush(FD, TCIOFLUSH);
133}
134
135
136void
137df_abort()
138{
139
140	df_disconnect();
141}
142
143
144static void
145timeout()
146{
147
148	longjmp(Sjbuf, 1);
149}
150