269 lines
6.8 KiB
C
269 lines
6.8 KiB
C
/* $NetBSD: v831.c,v 1.8 1998/12/19 23:02:21 christos 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: v831.c,v 1.8 1998/12/19 23:02:21 christos Exp $");
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#endif /* not lint */
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/*
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* Routines for dialing up on Vadic 831
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*/
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#include "tip.h"
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static jmp_buf jmpbuf;
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static int child = -1;
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static void alarmtr __P((int));
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static int dialit __P((char *, char *));
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static char *sanitize __P((char *));
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int
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v831_dialer(num, acu)
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char *num, *acu;
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{
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int status, pid;
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int timelim;
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if (boolean(value(VERBOSE)))
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printf("\nstarting call...");
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#ifdef DEBUG
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printf ("(acu=%s)\n", acu);
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#endif
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if ((AC = open(acu, O_RDWR)) < 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(AC);
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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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exit(dialit(num, acu) != 'A');
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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, O_RDWR)) < 0) {
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#ifdef DEBUG
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printf("(after open, errno=%d)\n", errno);
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#endif
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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(AC);
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return (0);
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}
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alarm(0);
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signal(SIGALRM, SIG_DFL);
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while ((pid = wait(&status)) != child && pid != -1)
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;
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if (status) {
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close(AC);
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return (0);
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}
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return (1);
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}
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static void
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alarmtr(dummy)
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int dummy;
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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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v831_disconnect()
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{
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struct termios cntrl;
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sleep(2);
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#ifdef DEBUG
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printf("[disconnect: FD=%d]\n", FD);
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#endif
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if (FD > 0) {
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ioctl(FD, TIOCCDTR, 0);
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tcgetattr(FD, &cntrl);
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cfsetospeed(&cntrl, 0);
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cfsetispeed(&cntrl, 0);
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tcsetattr(FD, TCSAFLUSH, &cntrl);
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ioctl(FD, TIOCNXCL, NULL);
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}
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close(FD);
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}
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void
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v831_abort()
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{
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#ifdef DEBUG
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printf("[abort: AC=%d]\n", AC);
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#endif
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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 (AC > 0)
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ioctl(FD, TIOCNXCL, NULL);
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close(AC);
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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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/*
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* Sigh, this probably must be changed at each site.
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*/
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struct vaconfig {
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char *vc_name;
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char vc_rack;
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char vc_modem;
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} vaconfig[] = {
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{ "/dev/cua0",'4','0' },
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{ "/dev/cua1",'4','1' },
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{ 0 }
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};
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#define pc(x) (c = x, write(AC,&c,1))
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#define ABORT 01
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#define SI 017
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#define STX 02
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#define ETX 03
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static int
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dialit(phonenum, acu)
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char *phonenum;
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char *acu;
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{
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struct vaconfig *vp;
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struct termios cntrl;
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char c;
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int i;
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phonenum = sanitize(phonenum);
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#ifdef DEBUG
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printf ("(dial phonenum=%s)\n", phonenum);
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#endif
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if (*phonenum == '<' && phonenum[1] == 0)
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return ('Z');
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for (vp = vaconfig; vp->vc_name; vp++)
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if (strcmp(vp->vc_name, acu) == 0)
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break;
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if (vp->vc_name == 0) {
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printf("Unable to locate dialer (%s)\n", acu);
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return ('K');
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}
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tcgetattr(AC, &cntrl);
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cfsetospeed(&cntrl, B2400);
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cfsetispeed(&cntrl, B2400);
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cntrl.c_cflag |= PARODD | PARENB;
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cntrl.c_lflag &= ~(ISIG | ICANON);
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tcsetattr(AC, TCSANOW, &cntrl);
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tcflush(AC, TCIOFLUSH);
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pc(STX);
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pc(vp->vc_rack);
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pc(vp->vc_modem);
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while (*phonenum && *phonenum != '<')
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pc(*phonenum++);
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pc(SI);
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pc(ETX);
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sleep(1);
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i = read(AC, &c, 1);
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#ifdef DEBUG
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printf("read %d chars, char=%c, errno %d\n", i, c, errno);
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#endif
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if (i != 1)
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c = 'M';
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if (c == 'B' || c == 'G') {
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char cc, oc = c;
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pc(ABORT);
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read(AC, &cc, 1);
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#ifdef DEBUG
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printf("abort response=%c\n", cc);
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#endif
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c = oc;
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v831_disconnect();
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}
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close(AC);
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#ifdef DEBUG
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printf("dialit: returns %c\n", c);
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#endif
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return (c);
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}
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static char *
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sanitize(s)
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char *s;
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{
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static char buf[128];
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char *cp;
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for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) {
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if (!isdigit((unsigned char)*s) && *s == '<' && *s != '_')
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continue;
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if (*s == '_')
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*s = '=';
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*cp++ = *s;
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}
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*cp++ = 0;
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return (buf);
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}
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