df.c revision 7527 
1/*
2 * Copyright (c) 1983, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)df.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38/*
39 * Dial the DF02-AC or DF03-AC
40 */
41
42#include "tipconf.h"
43#include "tip.h"
44
45static jmp_buf Sjbuf;
46static void timeout();
47
48df02_dialer(num, acu)
49	char *num, *acu;
50{
51
52	return (df_dialer(num, acu, 0));
53}
54
55df03_dialer(num, acu)
56	char *num, *acu;
57{
58
59	return (df_dialer(num, acu, 1));
60}
61
62df_dialer(num, acu, df03)
63	char *num, *acu;
64	int df03;
65{
66	register int f = FD;
67	int speed = 0, rw = 2;
68	char c = '\0';
69
70	acu_hupcl ();
71
72	if (setjmp(Sjbuf)) {
73		printf("connection timed out\r\n");
74		df_disconnect();
75		return (0);
76	}
77	if (boolean(value(VERBOSE)))
78		printf("\ndialing...");
79	fflush(stdout);
80#ifdef TIOCMSET
81	if (df03) {
82		int st = TIOCM_ST;	/* secondary Transmit flag */
83
84		if ((speed = acu_getspeed ()) != B1200) {	/* must dial at 1200 baud */
85			acu_setspeed (B1200);
86			ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
87		} else
88			ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
89	}
90#endif
91	signal(SIGALRM, timeout);
92	alarm(5 * strlen(num) + 10);
93	ioctl(f, TIOCFLUSH, &rw);
94	write(f, "\001", 1);
95	sleep(1);
96	write(f, "\002", 1);
97	write(f, num, strlen(num));
98	read(f, &c, 1);
99#ifdef TIOCMSET
100	if (df03 && speed) {
101		acu_setspeed (speed);
102	}
103#endif
104	return (c == 'A');
105}
106
107df_disconnect()
108{
109	int rw = 2;
110
111	write(FD, "\001", 1);
112	sleep(1);
113	ioctl(FD, TIOCFLUSH, &rw);
114}
115
116
117df_abort()
118{
119
120	df_disconnect();
121}
122
123
124static void
125timeout()
126{
127
128	longjmp(Sjbuf, 1);
129}
130