255 lines
5.5 KiB
C
255 lines
5.5 KiB
C
/* $OpenBSD: biz31.c,v 1.6 2001/10/24 18:38:58 millert Exp $ */
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/* $NetBSD: biz31.c,v 1.5 1997/02/11 09:24:14 mrg 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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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)biz31.c 8.1 (Berkeley) 6/6/93";
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#endif
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static char rcsid[] = "$OpenBSD: biz31.c,v 1.6 2001/10/24 18:38:58 millert Exp $";
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#endif /* not lint */
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#include "tip.h"
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#define MAXRETRY 3 /* sync up retry count */
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#define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */
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static void sigALRM();
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static int timeout = 0;
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static jmp_buf timeoutbuf;
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/*
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* Dial up on a BIZCOMP Model 1031 with either
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* tone dialing (mod = "f")
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* pulse dialing (mod = "w")
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*/
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static int
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biz_dialer(num, mod)
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char *num, *mod;
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{
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int connected = 0;
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if (!bizsync(FD)) {
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logent(value(HOST), "", "biz", "out of sync");
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printf("bizcomp out of sync\n");
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delock(uucplock);
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exit(0);
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}
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if (boolean(value(VERBOSE)))
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printf("\nstarting call...");
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echo("#\rk$\r$\n"); /* disable auto-answer */
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echo("$>$.$ #\r"); /* tone/pulse dialing */
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echo(mod);
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echo("$\r$\n");
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echo("$>$.$ #\re$ "); /* disconnection sequence */
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echo(DISCONNECT_CMD);
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echo("\r$\n$\r$\n");
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echo("$>$.$ #\rr$ "); /* repeat dial */
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echo(num);
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echo("\r$\n");
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if (boolean(value(VERBOSE)))
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printf("ringing...");
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/*
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* The reply from the BIZCOMP should be:
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* `^G NO CONNECTION\r\n^G\r\n' failure
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* ` CONNECTION\r\n^G' success
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*/
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connected = detect(" ");
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#ifdef ACULOG
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if (timeout) {
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char line[80];
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(void)sprintf(line, "%ld second dial timeout",
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number(value(DIALTIMEOUT)));
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logent(value(HOST), num, "biz", line);
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}
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#endif
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if (!connected)
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flush(" NO CONNECTION\r\n\07\r\n");
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else
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flush("CONNECTION\r\n\07");
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if (timeout)
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biz31_disconnect(); /* insurance */
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return (connected);
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}
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biz31w_dialer(num, acu)
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char *num, *acu;
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{
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return (biz_dialer(num, "w"));
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}
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biz31f_dialer(num, acu)
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char *num, *acu;
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{
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return (biz_dialer(num, "f"));
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}
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biz31_disconnect()
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{
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write(FD, DISCONNECT_CMD, 4);
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sleep(2);
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tcflush(FD, TCIOFLUSH);
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}
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biz31_abort()
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{
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write(FD, "\33", 1);
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}
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static int
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echo(s)
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char *s;
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{
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char c;
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while (c = *s++) switch (c) {
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case '$':
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read(FD, &c, 1);
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s++;
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break;
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case '#':
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c = *s++;
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write(FD, &c, 1);
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break;
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default:
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write(FD, &c, 1);
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read(FD, &c, 1);
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}
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}
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static void
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sigALRM()
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{
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timeout = 1;
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longjmp(timeoutbuf, 1);
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}
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static int
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detect(s)
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char *s;
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{
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sig_t f;
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char c;
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f = signal(SIGALRM, sigALRM);
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timeout = 0;
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while (*s) {
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if (setjmp(timeoutbuf)) {
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printf("\07timeout waiting for reply\n");
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biz31_abort();
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break;
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}
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alarm(number(value(DIALTIMEOUT)));
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read(FD, &c, 1);
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alarm(0);
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if (c != *s++)
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break;
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}
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signal(SIGALRM, f);
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return (timeout == 0);
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}
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static int
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flush(s)
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char *s;
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{
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sig_t f;
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char c;
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f = signal(SIGALRM, sigALRM);
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while (*s++) {
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if (setjmp(timeoutbuf))
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break;
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alarm(10);
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read(FD, &c, 1);
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alarm(0);
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}
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signal(SIGALRM, f);
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timeout = 0; /* guard against disconnection */
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}
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/*
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* This convoluted piece of code attempts to get
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* the bizcomp in sync. If you don't have the capacity or nread
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* call there are gory ways to simulate this.
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*/
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static int
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bizsync(fd)
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{
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#ifdef FIOCAPACITY
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struct capacity b;
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# define chars(b) ((b).cp_nbytes)
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# define IOCTL FIOCAPACITY
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#endif
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#ifdef FIONREAD
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long b;
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# define chars(b) (b)
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# define IOCTL FIONREAD
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#endif
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int already = 0;
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char buf[10];
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retry:
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if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0)
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tcflush(FD, TCIOFLUSH);
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write(fd, "\rp>\r", 4);
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sleep(1);
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if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) {
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if (chars(b) != 10) {
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nono:
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if (already > MAXRETRY)
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return (0);
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write(fd, DISCONNECT_CMD, 4);
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sleep(2);
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already++;
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goto retry;
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} else {
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read(fd, buf, 10);
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if (strncmp(buf, "p >\r\n\r\n>", 8))
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goto nono;
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}
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}
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return (1);
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}
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