/* $NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland 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. 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>
#ifndef lint
#if 0
static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland Exp $");
#endif /* not lint */
/*
* Routines for dialing up on Vadic 831
*/
#include "tip.h"
static jmp_buf jmpbuf;
static int child = -1;
static void alarmtr(int);
static int dialit(char *, char *);
static char *sanitize(char *);
int
v831_dialer(char *num, char *acu)
{
int status, mypid;
int timelim;
if (boolean(value(VERBOSE)))
(void)printf("\nstarting call...");
#ifdef DEBUG
(void)printf("(acu=%s)\n", acu);
#endif
if ((AC = open(acu, O_RDWR)) < 0) {
if (errno == EBUSY)
(void)printf("line busy...");
else
(void)printf("acu open error...");
return (0);
}
if (setjmp(jmpbuf)) {
(void)kill(child, SIGKILL);
(void)close(AC);
return (0);
}
(void)signal(SIGALRM, alarmtr);
timelim = 5 * strlen(num);
(void)alarm((unsigned)(timelim < 30 ? 30 : timelim));
if ((child = fork()) == 0) {
/*
* ignore this stuff for aborts
*/
(void)signal(SIGALRM, SIG_IGN);
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
(void)sleep(2);
exit(dialit(num, acu) != 'A');
}
/*
* open line - will return on carrier
*/
if ((FD = open(DV, O_RDWR)) < 0) {
#ifdef DEBUG
(void)printf("(after open, errno=%d)\n", errno);
#endif
if (errno == EIO)
(void)printf("lost carrier...");
else
(void)printf("dialup line open failed...");
(void)alarm(0);
(void)kill(child, SIGKILL);
(void)close(AC);
return (0);
}
(void)alarm(0);
(void)signal(SIGALRM, SIG_DFL);
while ((mypid = wait(&status)) != child && mypid != -1)
;
if (status) {
(void)close(AC);
return (0);
}
return (1);
}
static void
/*ARGSUSED*/
alarmtr(int dummy __unused)
{
(void)alarm(0);
longjmp(jmpbuf, 1);
}
/*
* Insurance, for some reason we don't seem to be
* hanging up...
*/
void
v831_disconnect(void)
{
struct termios cntrl;
(void)sleep(2);
#ifdef DEBUG
(void)printf("[disconnect: FD=%d]\n", FD);
#endif
if (FD > 0) {
(void)ioctl(FD, TIOCCDTR, 0);
(void)tcgetattr(FD, &cntrl);
(void)cfsetospeed(&cntrl, 0);
(void)cfsetispeed(&cntrl, 0);
(void)tcsetattr(FD, TCSAFLUSH, &cntrl);
(void)ioctl(FD, TIOCNXCL, NULL);
}
(void)close(FD);
}
void
v831_abort(void)
{
#ifdef DEBUG
(void)printf("[abort: AC=%d]\n", AC);
#endif
(void)sleep(2);
if (child > 0)
(void)kill(child, SIGKILL);
if (AC > 0)
(void)ioctl(FD, TIOCNXCL, NULL);
(void)close(AC);
if (FD > 0)
(void)ioctl(FD, TIOCCDTR, 0);
(void)close(FD);
}
/*
* Sigh, this probably must be changed at each site.
*/
struct vaconfig {
const char *vc_name;
char vc_rack;
char vc_modem;
} vaconfig[] = {
{ "/dev/cua0",'4','0' },
{ "/dev/cua1",'4','1' },
{ 0, '\0', '\0' }
};
#define pc(x) (void)(c = x, write(AC,&c,1))
#define ABORT 01
#define SI 017
#define STX 02
#define ETX 03
static int
dialit(char *phonenum, char *acu)
{
struct vaconfig *vp;
struct termios cntrl;
char c;
int i;
phonenum = sanitize(phonenum);
#ifdef DEBUG
(void)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) {
(void)printf("Unable to locate dialer (%s)\n", acu);
return ('K');
}
(void)tcgetattr(AC, &cntrl);
(void)cfsetospeed(&cntrl, B2400);
(void)cfsetispeed(&cntrl, B2400);
cntrl.c_cflag |= PARODD | PARENB;
cntrl.c_lflag &= ~(ISIG | ICANON);
(void)tcsetattr(AC, TCSANOW, &cntrl);
(void)tcflush(AC, TCIOFLUSH);
pc(STX);
pc(vp->vc_rack);
pc(vp->vc_modem);
while (*phonenum && *phonenum != '<')
pc(*phonenum++);
pc(SI);
pc(ETX);
(void)sleep(1);
i = read(AC, &c, 1);
#ifdef DEBUG
(void)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);
(void)read(AC, &cc, 1);
#ifdef DEBUG
(void)printf("abort response=%c\n", cc);
#endif
c = oc;
v831_disconnect();
}
(void)close(AC);
#ifdef DEBUG
(void)printf("dialit: returns %c\n", c);
#endif
return (c);
}
static char *
sanitize(char *s)
{
static char buf[128];
char *cp;
for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) {
if (!isdigit((unsigned char)*s) && *s != '<' && *s != '_')
continue;
if (*s == '_')
*s = '=';
*cp++ = *s;
}
*cp++ = 0;
return (buf);
}