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/* $OpenBSD: biz31.c,v 1.11 2009/10/27 23:59:45 deraadt Exp $ */
/* $NetBSD: biz31.c,v 1.5 1997/02/11 09:24:14 mrg 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 "tip.h"
#define MAXRETRY 3 /* sync up retry count */
#define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */
static int biz_dialer(char *, char *);
static int bizsync(int);
static int echo(char *);
static void sigALRM(int);
static int detect(char *);
static int flush(char *);
static int bizsync(int);
static int timeout = 0;
static jmp_buf timeoutbuf;
/*
* Dial up on a BIZCOMP Model 1031 with either
* tone dialing (mod = "f")
* pulse dialing (mod = "w")
*/
static int
biz_dialer(char *num, char *mod)
{
int connected = 0;
if (!bizsync(FD)) {
logent(value(HOST), "", "biz", "out of sync");
printf("bizcomp out of sync\n");
delock(uucplock);
exit(0);
}
if (boolean(value(VERBOSE)))
printf("\nstarting call...");
echo("#\rk$\r$\n"); /* disable auto-answer */
echo("$>$.$ #\r"); /* tone/pulse dialing */
echo(mod);
echo("$\r$\n");
echo("$>$.$ #\re$ "); /* disconnection sequence */
echo(DISCONNECT_CMD);
echo("\r$\n$\r$\n");
echo("$>$.$ #\rr$ "); /* repeat dial */
echo(num);
echo("\r$\n");
if (boolean(value(VERBOSE)))
printf("ringing...");
/*
* The reply from the BIZCOMP should be:
* `^G NO CONNECTION\r\n^G\r\n' failure
* ` CONNECTION\r\n^G' success
*/
connected = detect(" ");
#ifdef ACULOG
if (timeout) {
char line[80];
(void)snprintf(line, sizeof line, "%ld second dial timeout",
number(value(DIALTIMEOUT)));
logent(value(HOST), num, "biz", line);
}
#endif
if (!connected)
flush(" NO CONNECTION\r\n\07\r\n");
else
flush("CONNECTION\r\n\07");
if (timeout)
biz31_disconnect(); /* insurance */
return (connected);
}
int
biz31w_dialer(char *num, char *acu)
{
return (biz_dialer(num, "w"));
}
int
biz31f_dialer(char *num, char *acu)
{
return (biz_dialer(num, "f"));
}
void
biz31_disconnect(void)
{
write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1);
sleep(2);
tcflush(FD, TCIOFLUSH);
}
void
biz31_abort(void)
{
write(FD, "\33", 1);
}
static int
echo(char *s)
{
char c;
while (c = *s++) switch (c) {
case '$':
read(FD, &c, 1);
s++;
break;
case '#':
c = *s++;
write(FD, &c, 1);
break;
default:
write(FD, &c, 1);
read(FD, &c, 1);
}
}
/*ARGSUSED*/
static void
sigALRM(int signo)
{
timeout = 1;
longjmp(timeoutbuf, 1);
}
static int
detect(char *s)
{
sig_t f;
char c;
f = signal(SIGALRM, sigALRM);
timeout = 0;
while (*s) {
if (setjmp(timeoutbuf)) {
printf("\07timeout waiting for reply\n");
biz31_abort();
break;
}
alarm(number(value(DIALTIMEOUT)));
read(FD, &c, 1);
alarm(0);
if (c != *s++)
break;
}
signal(SIGALRM, f);
return (timeout == 0);
}
static int
flush(char *s)
{
sig_t f;
char c;
f = signal(SIGALRM, sigALRM);
while (*s++) {
if (setjmp(timeoutbuf))
break;
alarm(10);
read(FD, &c, 1);
alarm(0);
}
signal(SIGALRM, f);
timeout = 0; /* guard against disconnection */
}
/*
* This convoluted piece of code attempts to get
* the bizcomp in sync. If you don't have the capacity or nread
* call there are gory ways to simulate this.
*/
static int
bizsync(int fd)
{
#ifdef FIOCAPACITY
struct capacity b;
# define chars(b) ((b).cp_nbytes)
# define IOCTL FIOCAPACITY
#endif
#ifdef FIONREAD
long b;
# define chars(b) (b)
# define IOCTL FIONREAD
#endif
int already = 0;
char buf[10];
retry:
if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0)
tcflush(FD, TCIOFLUSH);
write(fd, "\rp>\r", 4);
sleep(1);
if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) {
if (chars(b) != 10) {
nono:
if (already > MAXRETRY)
return (0);
write(fd, DISCONNECT_CMD, 4);
sleep(2);
already++;
goto retry;
} else {
read(fd, buf, 10);
if (strncmp(buf, "p >\r\n\r\n>", 8))
goto nono;
}
}
return (1);
}
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