872b698bd4
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
375 lines
7.9 KiB
C
375 lines
7.9 KiB
C
/* $OpenBSD: t3000.c,v 1.14 2006/03/17 19:17:13 moritz Exp $ */
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/* $NetBSD: t3000.c,v 1.5 1997/02/11 09:24:18 mrg Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1992, 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. 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)t3000.c 8.1 (Berkeley) 6/6/93";
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static const char rcsid[] = "$OpenBSD: t3000.c,v 1.14 2006/03/17 19:17:13 moritz Exp $";
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#endif
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#endif /* not lint */
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/*
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* Routines for calling up on a Telebit T3000 modem.
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* Derived from Courier driver.
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*/
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#include "tip.h"
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#include <sys/ioctl.h>
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#include <stdio.h>
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#define MAXRETRY 5
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static int dialtimeout = 0;
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static int connected = 0;
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static jmp_buf timeoutbuf;
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static void sigALRM(int);
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static int t3000_swallow(char *);
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static int t3000_connect(void);
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static int t3000_sync(void);
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static void t3000_write(int, char *, int);
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static void t3000_nap(void);
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#ifdef DEBUG
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static void t3000_verbose_read(void);
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#endif
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int
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t3000_dialer(char *num, char *acu)
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{
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char *cp;
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struct termios cntrl;
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#ifdef ACULOG
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char line[80];
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#endif
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if (boolean(value(VERBOSE)))
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printf("Using \"%s\"\n", acu);
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tcgetattr(FD, &cntrl);
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cntrl.c_cflag |= HUPCL;
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tcsetattr(FD, TCSANOW, &cntrl);
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/*
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* Get in synch.
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*/
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if (!t3000_sync()) {
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badsynch:
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printf("can't synchronize with t3000\n");
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#ifdef ACULOG
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logent(value(HOST), num, "t3000", "can't synch up");
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#endif
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return (0);
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}
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t3000_write(FD, "AT E0\r", 6); /* turn off echoing */
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sleep(1);
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#ifdef DEBUG
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if (boolean(value(VERBOSE)))
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t3000_verbose_read();
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#endif
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tcflush(FD, TCIOFLUSH);
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t3000_write(FD, "AT E0 H0 Q0 X4 V1\r", 18);
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if (!t3000_swallow("\r\nOK\r\n"))
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goto badsynch;
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fflush(stdout);
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t3000_write(FD, "AT D", 4);
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for (cp = num; *cp; cp++)
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if (*cp == '=')
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*cp = ',';
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t3000_write(FD, num, strlen(num));
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t3000_write(FD, "\r", 1);
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connected = t3000_connect();
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#ifdef ACULOG
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if (dialtimeout) {
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(void)snprintf(line, sizeof line, "%ld second dial timeout",
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number(value(DIALTIMEOUT)));
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logent(value(HOST), num, "t3000", line);
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}
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#endif
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if (dialtimeout)
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t3000_disconnect();
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return (connected);
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}
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void
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t3000_disconnect(void)
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{
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/* first hang up the modem*/
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ioctl(FD, TIOCCDTR, 0);
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sleep(1);
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ioctl(FD, TIOCSDTR, 0);
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t3000_sync(); /* reset */
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close(FD);
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}
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void
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t3000_abort(void)
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{
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t3000_write(FD, "\r", 1); /* send anything to abort the call */
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t3000_disconnect();
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}
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/*ARGSUSED*/
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static void
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sigALRM(int signo)
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{
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printf("\07timeout waiting for reply\n");
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dialtimeout = 1;
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longjmp(timeoutbuf, 1);
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}
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static int
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t3000_swallow(char *match)
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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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dialtimeout = 0;
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do {
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if (*match =='\0') {
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signal(SIGALRM, f);
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return (1);
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}
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if (setjmp(timeoutbuf)) {
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signal(SIGALRM, f);
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return (0);
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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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c &= 0177;
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#ifdef DEBUG
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if (boolean(value(VERBOSE)))
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putchar(c);
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#endif
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} while (c == *match++);
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#ifdef DEBUG
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if (boolean(value(VERBOSE)))
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fflush(stdout);
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#endif
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signal(SIGALRM, SIG_DFL);
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return (0);
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}
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#ifndef B19200 /* XXX */
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#define B19200 EXTA
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#define B38400 EXTB
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#endif
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struct tbaud_msg {
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char *msg;
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int baud;
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int baud2;
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} tbaud_msg[] = {
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{ "", B300, 0 },
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{ " 1200", B1200, 0 },
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{ " 2400", B2400, 0 },
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{ " 4800", B4800, 0 },
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{ " 9600", B9600, 0 },
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{ " 14400", B19200, B9600 },
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{ " 19200", B19200, B9600 },
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{ " 38400", B38400, B9600 },
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{ " 57600", B38400, B9600 },
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{ " 7512", B9600, 0 },
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{ " 1275", B2400, 0 },
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{ " 7200", B9600, 0 },
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{ " 12000", B19200, B9600 },
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{ 0, 0, 0 },
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};
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static int
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t3000_connect(void)
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{
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char c;
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int nc, nl, n;
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char dialer_buf[64];
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struct tbaud_msg *bm;
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sig_t f;
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if (t3000_swallow("\r\n") == 0)
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return (0);
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f = signal(SIGALRM, sigALRM);
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again:
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nc = 0; nl = sizeof(dialer_buf)-1;
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bzero(dialer_buf, sizeof(dialer_buf));
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dialtimeout = 0;
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for (nc = 0, nl = sizeof(dialer_buf)-1 ; nl > 0 ; nc++, nl--) {
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if (setjmp(timeoutbuf))
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break;
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alarm(number(value(DIALTIMEOUT)));
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n = read(FD, &c, 1);
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alarm(0);
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if (n <= 0)
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break;
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c &= 0x7f;
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if (c == '\r') {
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if (t3000_swallow("\n") == 0)
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break;
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if (!dialer_buf[0])
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goto again;
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if (strcmp(dialer_buf, "RINGING") == 0 &&
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boolean(value(VERBOSE))) {
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#ifdef DEBUG
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printf("%s\r\n", dialer_buf);
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#endif
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goto again;
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}
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if (strncmp(dialer_buf, "CONNECT",
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sizeof("CONNECT")-1) != 0)
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break;
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for (bm = tbaud_msg ; bm->msg ; bm++)
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if (strcmp(bm->msg,
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dialer_buf+sizeof("CONNECT")-1) == 0) {
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struct termios cntrl;
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tcgetattr(FD, &cntrl);
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cfsetospeed(&cntrl, bm->baud);
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cfsetispeed(&cntrl, bm->baud);
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tcsetattr(FD, TCSAFLUSH, &cntrl);
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signal(SIGALRM, f);
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#ifdef DEBUG
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if (boolean(value(VERBOSE)))
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printf("%s\r\n", dialer_buf);
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#endif
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return (1);
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}
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break;
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}
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dialer_buf[nc] = c;
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#ifdef notdef
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if (boolean(value(VERBOSE)))
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putchar(c);
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#endif
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}
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printf("%s\r\n", dialer_buf);
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signal(SIGALRM, f);
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return (0);
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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 t3000 in sync.
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*/
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static int
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t3000_sync(void)
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{
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int already = 0;
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int len;
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char buf[40];
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while (already++ < MAXRETRY) {
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tcflush(FD, TCIOFLUSH);
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t3000_write(FD, "\rAT Z\r", 6); /* reset modem */
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bzero(buf, sizeof(buf));
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sleep(2);
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ioctl(FD, FIONREAD, &len);
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#if 1
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if (len == 0) len = 1;
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#endif
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if (len) {
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len = read(FD, buf, sizeof(buf));
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#ifdef DEBUG
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buf[len] = '\0';
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printf("t3000_sync: (\"%s\")\n\r", buf);
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#endif
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if (strchr(buf, '0') ||
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(strchr(buf, 'O') && strchr(buf, 'K')))
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return(1);
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}
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/*
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* If not strapped for DTR control,
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* try to get command mode.
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*/
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sleep(1);
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t3000_write(FD, "+++", 3);
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sleep(1);
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/*
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* Toggle DTR to force anyone off that might have left
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* the modem connected.
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*/
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ioctl(FD, TIOCCDTR, 0);
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sleep(1);
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ioctl(FD, TIOCSDTR, 0);
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}
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t3000_write(FD, "\rAT Z\r", 6);
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return (0);
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}
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static void
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t3000_write(int fd, char *cp, int n)
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{
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#ifdef notdef
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if (boolean(value(VERBOSE)))
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write(1, cp, n);
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#endif
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tcdrain(fd);
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t3000_nap();
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for ( ; n-- ; cp++) {
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write(fd, cp, 1);
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tcdrain(fd);
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t3000_nap();
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}
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}
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#ifdef DEBUG
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static void
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t3000_verbose_read(void)
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{
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int n = 0;
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char buf[BUFSIZ];
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if (ioctl(FD, FIONREAD, &n) < 0)
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return;
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if (n <= 0)
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return;
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if (read(FD, buf, n) != n)
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return;
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write(1, buf, n);
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}
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#endif
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/* Give the t3000 50 milliseconds between characters */
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static void
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t3000_nap(void)
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{
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struct timespec ts;
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ts.tv_sec = 0;
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ts.tv_nsec = 50 * 1000000;
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nanosleep(&ts, NULL);
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}
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