150 lines
3.6 KiB
C
150 lines
3.6 KiB
C
/* $OpenBSD: dn11.c,v 1.9 2006/03/17 19:17:13 moritz Exp $ */
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/* $NetBSD: dn11.c,v 1.4 1995/10/29 00:49:53 pk Exp $ */
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/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)dn11.c 8.1 (Berkeley) 6/6/93";
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static const char rcsid[] = "$OpenBSD: dn11.c,v 1.9 2006/03/17 19:17:13 moritz Exp $";
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#endif
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#endif /* not lint */
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/*
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* Routines for dialing up on DN-11
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*/
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#include "tip.h"
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static jmp_buf jmpbuf;
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static pid_t child = -1, dn;
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static void alarmtr(int);
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int
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dn_dialer(char *num, char *acu)
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{
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int lt, nw;
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int timelim;
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struct termios cntrl;
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if (boolean(value(VERBOSE)))
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printf("\nstarting call...");
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if ((dn = open(acu, 1)) < 0) {
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if (errno == EBUSY)
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printf("line busy...");
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else
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printf("acu open error...");
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return (0);
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}
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if (setjmp(jmpbuf)) {
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kill(child, SIGKILL);
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close(dn);
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return (0);
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}
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signal(SIGALRM, alarmtr);
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timelim = 5 * strlen(num);
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alarm(timelim < 30 ? 30 : timelim);
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if ((child = fork()) == 0) {
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/*
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* ignore this stuff for aborts
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*/
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signal(SIGALRM, SIG_IGN);
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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sleep(2);
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nw = write(dn, num, lt = strlen(num));
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exit(nw != lt);
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}
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/*
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* open line - will return on carrier
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*/
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if ((FD = open(DV, 2)) < 0) {
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if (errno == EIO)
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printf("lost carrier...");
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else
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printf("dialup line open failed...");
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alarm(0);
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kill(child, SIGKILL);
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close(dn);
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return (0);
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}
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alarm(0);
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tcgetattr(dn, &cntrl);
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cntrl.c_cflag |= HUPCL;
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tcsetattr(dn, TCSANOW, &cntrl);
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signal(SIGALRM, SIG_DFL);
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while ((nw = wait(<)) != child && nw != -1)
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;
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fflush(stdout);
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close(dn);
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if (lt != 0) {
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close(FD);
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return (0);
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}
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return (1);
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}
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/*ARGSUSED*/
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static void
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alarmtr(int signo)
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{
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alarm(0);
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longjmp(jmpbuf, 1);
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}
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/*
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* Insurance, for some reason we don't seem to be
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* hanging up...
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*/
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void
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dn_disconnect(void)
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{
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sleep(2);
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if (FD > 0)
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ioctl(FD, TIOCCDTR, 0);
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close(FD);
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}
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void
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dn_abort(void)
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{
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sleep(2);
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if (child > 0)
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kill(child, SIGKILL);
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if (dn > 0)
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close(dn);
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if (FD > 0)
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ioctl(FD, TIOCCDTR, 0);
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close(FD);
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}
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