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/* $OpenBSD: biz22.c,v 1.14 2009/10/27 23:59:45 deraadt Exp $ */
/* $NetBSD: biz22.c,v 1.6 1997/02/11 09:24:11 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 DISCONNECT_CMD "\20\04" /* disconnection string */
static int dialtimeout = 0;
static jmp_buf timeoutbuf;
static int biz_dialer(char *, char *);
static void sigALRM(int);
static int cmd(char *);
static int detect(char *);
/*
* Dial up on a BIZCOMP Model 1022 with either
* tone dialing (mod = "V")
* pulse dialing (mod = "W")
*/
static int
biz_dialer(char *num, char *mod)
{
int connected = 0;
char cbuf[40];
if (boolean(value(VERBOSE)))
printf("\nstarting call...");
/*
* Disable auto-answer and configure for tone/pulse
* dialing
*/
if (cmd("\02K\r")) {
printf("can't initialize bizcomp...");
return (0);
}
(void)strlcpy(cbuf, "\02.\r", sizeof cbuf);
cbuf[1] = *mod;
if (cmd(cbuf)) {
printf("can't set dialing mode...");
return (0);
}
(void)snprintf(cbuf, sizeof(cbuf), "\02D%s\r", num);
write(FD, cbuf, strlen(cbuf));
if (!detect("7\r")) {
printf("can't get dial tone...");
return (0);
}
if (boolean(value(VERBOSE)))
printf("ringing...");
/*
* The reply from the BIZCOMP should be:
* 2 \r or 7 \r failure
* 1 \r success
*/
connected = detect("1\r");
#ifdef ACULOG
if (dialtimeout) {
char line[80];
(void)snprintf(line, sizeof line, "%ld second dial timeout",
number(value(DIALTIMEOUT)));
logent(value(HOST), num, "biz1022", line);
}
#endif
if (dialtimeout)
biz22_disconnect(); /* insurance */
return (connected);
}
int
biz22w_dialer(char *num, char *acu)
{
return (biz_dialer(num, "W"));
}
int
biz22f_dialer(char *num, char *acu)
{
return (biz_dialer(num, "V"));
}
void
biz22_disconnect(void)
{
write(FD, DISCONNECT_CMD, sizeof(DISCONNECT_CMD)-1);
sleep(2);
tcflush(FD, TCIOFLUSH);
}
void
biz22_abort(void)
{
write(FD, "\02", 1);
}
/*ARGSUSED*/
static void
sigALRM(int signo)
{
dialtimeout = 1;
longjmp(timeoutbuf, 1);
}
static int
cmd(char *s)
{
sig_t f;
char c;
write(FD, s, strlen(s));
f = signal(SIGALRM, sigALRM);
if (setjmp(timeoutbuf)) {
biz22_abort();
signal(SIGALRM, f);
return (1);
}
alarm(number(value(DIALTIMEOUT)));
read(FD, &c, 1);
alarm(0);
signal(SIGALRM, f);
c &= 0177;
return (c != '\r');
}
static int
detect(char *s)
{
sig_t f;
char c;
f = signal(SIGALRM, sigALRM);
dialtimeout = 0;
while (*s) {
if (setjmp(timeoutbuf)) {
biz22_abort();
break;
}
alarm(number(value(DIALTIMEOUT)));
read(FD, &c, 1);
alarm(0);
c &= 0177;
if (c != *s++)
return (0);
}
signal(SIGALRM, f);
return (dialtimeout == 0);
}
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