freebsd-dev/usr.bin/tip/libacu/df.c
Pedro F. Giffuni 8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:49:47 +00:00

140 lines
3.6 KiB
C

/* $OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $ */
/* $NetBSD: df.c,v 1.4 1995/10/29 00:49:51 pk Exp $ */
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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. 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef lint
#if 0
static char sccsid[] = "@(#)df.c 8.1 (Berkeley) 6/6/93";
static const char rcsid[] = "$OpenBSD: df.c,v 1.9 2006/03/17 19:17:13 moritz Exp $";
#endif
#endif /* not lint */
/*
* Dial the DF02-AC or DF03-AC
*/
#include "tip.h"
static jmp_buf Sjbuf;
static int df_dialer(char *, char *, int);
static void alrm_timeout(int);
int
df02_dialer(char *num, char *acu)
{
return (df_dialer(num, acu, 0));
}
int
df03_dialer(char *num, char *acu)
{
return (df_dialer(num, acu, 1));
}
static int
df_dialer(char *num, char *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, alrm_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(void)
{
write(FD, "\001", 1);
sleep(1);
tcflush(FD, TCIOFLUSH);
}
void
df_abort(void)
{
df_disconnect();
}
/*ARGSUSED*/
static void
alrm_timeout(int signo)
{
longjmp(Sjbuf, 1);
}