FreeBSD-5.3/usr.bin/tip/libacu/v831.c
/* $OpenBSD: v831.c,v 1.6 2001/11/19 19:02:16 mpech Exp $ */
/* $NetBSD: v831.c,v 1.5 1996/12/29 10:42:01 cgd Exp $ */
/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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: src/usr.bin/tip/libacu/v831.c,v 1.3 2001/12/20 14:25:46 markm Exp $");
#ifndef lint
#if 0
static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93";
static char rcsid[] = "$OpenBSD: v831.c,v 1.6 2001/11/19 19:02:16 mpech Exp $";
#endif
#endif /* not lint */
/*
* Routines for dialing up on Vadic 831
*/
#include "tip.h"
#include <termios.h>
void v831_abort();
static void alarmtr();
static int dialit();
static char *sanitize();
static jmp_buf jmpbuf;
static int child = -1;
int
v831_dialer(num, acu)
char *num, *acu;
{
int status, pid;
int timelim;
if (boolean(value(VERBOSE)))
printf("\nstarting call...");
#ifdef DEBUG
printf ("(acu=%s)\n", acu);
#endif
if ((AC = open(acu, O_RDWR)) < 0) {
if (errno == EBUSY)
printf("line busy...");
else
printf("acu open error...");
return (0);
}
if (setjmp(jmpbuf)) {
kill(child, SIGKILL);
close(AC);
return (0);
}
signal(SIGALRM, alarmtr);
timelim = 5 * strlen(num);
alarm(timelim < 30 ? 30 : timelim);
if ((child = fork()) == 0) {
/*
* ignore this stuff for aborts
*/
signal(SIGALRM, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
sleep(2);
exit(dialit(num, acu) != 'A');
}
/*
* open line - will return on carrier
*/
if ((FD = open(DV, O_RDWR)) < 0) {
#ifdef DEBUG
printf("(after open, errno=%d)\n", errno);
#endif
if (errno == EIO)
printf("lost carrier...");
else
printf("dialup line open failed...");
alarm(0);
kill(child, SIGKILL);
close(AC);
return (0);
}
alarm(0);
signal(SIGALRM, SIG_DFL);
while ((pid = wait(&status)) != child && pid != -1)
;
if (status) {
close(AC);
return (0);
}
return (1);
}
static void
alarmtr()
{
alarm(0);
longjmp(jmpbuf, 1);
}
/*
* Insurance, for some reason we don't seem to be
* hanging up...
*/
void
v831_disconnect()
{
struct termios cntrl;
sleep(2);
#ifdef DEBUG
printf("[disconnect: FD=%d]\n", FD);
#endif
if (FD > 0) {
ioctl(FD, TIOCCDTR, 0);
tcgetattr(FD, &cntrl);
cfsetospeed(&cntrl, 0);
cfsetispeed(&cntrl, 0);
tcsetattr(FD, TCSAFLUSH, &cntrl);
ioctl(FD, TIOCNXCL, NULL);
}
close(FD);
}
void
v831_abort()
{
#ifdef DEBUG
printf("[abort: AC=%d]\n", AC);
#endif
sleep(2);
if (child > 0)
kill(child, SIGKILL);
if (AC > 0)
ioctl(FD, TIOCNXCL, NULL);
close(AC);
if (FD > 0)
ioctl(FD, TIOCCDTR, 0);
close(FD);
}
/*
* Sigh, this probably must be changed at each site.
*/
struct vaconfig {
char *vc_name;
char vc_rack;
char vc_modem;
} vaconfig[] = {
{ "/dev/cua0",'4','0' },
{ "/dev/cua1",'4','1' },
{ 0 }
};
#define pc(x) (c = x, write(AC,&c,1))
#define ABORT 01
#define SI 017
#define STX 02
#define ETX 03
static int
dialit(phonenum, acu)
char *phonenum;
char *acu;
{
struct vaconfig *vp;
struct termios cntrl;
char c;
int i;
phonenum = sanitize(phonenum);
#ifdef DEBUG
printf ("(dial phonenum=%s)\n", phonenum);
#endif
if (*phonenum == '<' && phonenum[1] == 0)
return ('Z');
for (vp = vaconfig; vp->vc_name; vp++)
if (strcmp(vp->vc_name, acu) == 0)
break;
if (vp->vc_name == 0) {
printf("Unable to locate dialer (%s)\n", acu);
return ('K');
}
tcgetattr(AC, &cntrl);
cfsetospeed(&cntrl, B2400);
cfsetispeed(&cntrl, B2400);
cntrl.c_cflag |= PARODD | PARENB;
cntrl.c_lflag &= ~(ISIG | ICANON);
tcsetattr(AC, TCSANOW, &cntrl);
tcflush(AC, TCIOFLUSH);
pc(STX);
pc(vp->vc_rack);
pc(vp->vc_modem);
while (*phonenum && *phonenum != '<')
pc(*phonenum++);
pc(SI);
pc(ETX);
sleep(1);
i = read(AC, &c, 1);
#ifdef DEBUG
printf("read %d chars, char=%c, errno %d\n", i, c, errno);
#endif
if (i != 1)
c = 'M';
if (c == 'B' || c == 'G') {
char cc, oc = c;
pc(ABORT);
read(AC, &cc, 1);
#ifdef DEBUG
printf("abort response=%c\n", cc);
#endif
c = oc;
v831_disconnect();
}
close(AC);
#ifdef DEBUG
printf("dialit: returns %c\n", c);
#endif
return (c);
}
static char *
sanitize(s)
char *s;
{
static char buf[128];
char *cp;
for (cp = buf; *s; s++) {
if (!isdigit(*s) && *s == '<' && *s != '_')
continue;
if (*s == '_')
*s = '=';
*cp++ = *s;
}
*cp++ = 0;
return (buf);
}