8a16b7a18f
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.
323 lines
7.3 KiB
C
323 lines
7.3 KiB
C
/* $OpenBSD: hayes.c,v 1.13 2006/03/17 19:17:13 moritz Exp $ */
|
|
/* $NetBSD: hayes.c,v 1.6 1997/02/11 09:24:17 mrg Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)hayes.c 8.1 (Berkeley) 6/6/93";
|
|
static const char rcsid[] = "$OpenBSD: hayes.c,v 1.13 2006/03/17 19:17:13 moritz Exp $";
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Routines for calling up on a Hayes Modem
|
|
* (based on the old VenTel driver).
|
|
* The modem is expected to be strapped for "echo".
|
|
* Also, the switches enabling the DTR and CD lines
|
|
* must be set correctly.
|
|
* NOTICE:
|
|
* The easy way to hang up a modem is always simply to
|
|
* clear the DTR signal. However, if the +++ sequence
|
|
* (which switches the modem back to local mode) is sent
|
|
* before modem is hung up, removal of the DTR signal
|
|
* has no effect (except that it prevents the modem from
|
|
* recognizing commands).
|
|
* (by Helge Skrivervik, Calma Company, Sunnyvale, CA. 1984)
|
|
*/
|
|
/*
|
|
* TODO:
|
|
* It is probably not a good idea to switch the modem
|
|
* state between 'verbose' and terse (status messages).
|
|
* This should be kicked out and we should use verbose
|
|
* mode only. This would make it consistent with normal
|
|
* interactive use thru the command 'tip dialer'.
|
|
*/
|
|
#include "tip.h"
|
|
|
|
#include <termios.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#define min(a,b) ((a < b) ? a : b)
|
|
|
|
static int dialtimeout = 0;
|
|
static jmp_buf timeoutbuf;
|
|
|
|
#define DUMBUFLEN 40
|
|
static char dumbuf[DUMBUFLEN];
|
|
|
|
#define DIALING 1
|
|
#define IDLE 2
|
|
#define CONNECTED 3
|
|
#define FAILED 4
|
|
static int state = IDLE;
|
|
|
|
static void sigALRM(int);
|
|
static char gobble(char *);
|
|
static void error_rep(char);
|
|
static void goodbye(void);
|
|
static int hay_sync(void);
|
|
|
|
int
|
|
hay_dialer(char *num, char *acu)
|
|
{
|
|
char *cp;
|
|
int connected = 0;
|
|
char dummy;
|
|
struct termios cntrl;
|
|
#ifdef ACULOG
|
|
char line[80];
|
|
#endif
|
|
if (hay_sync() == 0) /* make sure we can talk to the modem */
|
|
return(0);
|
|
if (boolean(value(VERBOSE)))
|
|
printf("\ndialing...");
|
|
fflush(stdout);
|
|
tcgetattr(FD, &cntrl);
|
|
cntrl.c_cflag |= HUPCL;
|
|
tcsetattr(FD, TCSANOW, &cntrl);
|
|
tcflush(FD, TCIOFLUSH);
|
|
write(FD, "ATv0\r", 5); /* tell modem to use short status codes */
|
|
gobble("\r");
|
|
gobble("\r");
|
|
write(FD, "ATTD", 4); /* send dial command */
|
|
for (cp = num; *cp; cp++)
|
|
if (*cp == '=')
|
|
*cp = ',';
|
|
write(FD, num, strlen(num));
|
|
state = DIALING;
|
|
write(FD, "\r", 1);
|
|
connected = 0;
|
|
if (gobble("\r")) {
|
|
if ((dummy = gobble("01234")) != '1')
|
|
error_rep(dummy);
|
|
else
|
|
connected = 1;
|
|
}
|
|
if (connected)
|
|
state = CONNECTED;
|
|
else {
|
|
state = FAILED;
|
|
return (connected); /* lets get out of here.. */
|
|
}
|
|
tcflush(FD, TCIOFLUSH);
|
|
#ifdef ACULOG
|
|
if (dialtimeout) {
|
|
(void)snprintf(line, sizeof line, "%ld second dial timeout",
|
|
number(value(DIALTIMEOUT)));
|
|
logent(value(HOST), num, "hayes", line);
|
|
}
|
|
#endif
|
|
if (dialtimeout)
|
|
hay_disconnect(); /* insurance */
|
|
return (connected);
|
|
}
|
|
|
|
void
|
|
hay_disconnect(void)
|
|
{
|
|
/* first hang up the modem*/
|
|
#ifdef DEBUG
|
|
printf("\rdisconnecting modem....\n\r");
|
|
#endif
|
|
ioctl(FD, TIOCCDTR, 0);
|
|
sleep(1);
|
|
ioctl(FD, TIOCSDTR, 0);
|
|
goodbye();
|
|
}
|
|
|
|
void
|
|
hay_abort(void)
|
|
{
|
|
write(FD, "\r", 1); /* send anything to abort the call */
|
|
hay_disconnect();
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static void
|
|
sigALRM(int signo)
|
|
{
|
|
printf("\07timeout waiting for reply\n\r");
|
|
dialtimeout = 1;
|
|
longjmp(timeoutbuf, 1);
|
|
}
|
|
|
|
static char
|
|
gobble(char *match)
|
|
{
|
|
char c;
|
|
sig_t f;
|
|
size_t i;
|
|
int status = 0;
|
|
|
|
f = signal(SIGALRM, sigALRM);
|
|
dialtimeout = 0;
|
|
#ifdef DEBUG
|
|
printf("\ngobble: waiting for %s\n", match);
|
|
#endif
|
|
do {
|
|
if (setjmp(timeoutbuf)) {
|
|
signal(SIGALRM, f);
|
|
return (0);
|
|
}
|
|
alarm(number(value(DIALTIMEOUT)));
|
|
read(FD, &c, 1);
|
|
alarm(0);
|
|
c &= 0177;
|
|
#ifdef DEBUG
|
|
printf("%c 0x%x ", c, c);
|
|
#endif
|
|
for (i = 0; i < strlen(match); i++)
|
|
if (c == match[i])
|
|
status = c;
|
|
} while (status == 0);
|
|
signal(SIGALRM, SIG_DFL);
|
|
#ifdef DEBUG
|
|
printf("\n");
|
|
#endif
|
|
return (status);
|
|
}
|
|
|
|
static void
|
|
error_rep(char c)
|
|
{
|
|
printf("\n\r");
|
|
switch (c) {
|
|
|
|
case '0':
|
|
printf("OK");
|
|
break;
|
|
|
|
case '1':
|
|
printf("CONNECT");
|
|
break;
|
|
|
|
case '2':
|
|
printf("RING");
|
|
break;
|
|
|
|
case '3':
|
|
printf("NO CARRIER");
|
|
break;
|
|
|
|
case '4':
|
|
printf("ERROR in input");
|
|
break;
|
|
|
|
case '5':
|
|
printf("CONNECT 1200");
|
|
break;
|
|
|
|
default:
|
|
printf("Unknown Modem error: %c (0x%x)", c, c);
|
|
}
|
|
printf("\n\r");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* set modem back to normal verbose status codes.
|
|
*/
|
|
static void
|
|
goodbye(void)
|
|
{
|
|
int len;
|
|
char c;
|
|
|
|
tcflush(FD, TCIOFLUSH);
|
|
if (hay_sync()) {
|
|
sleep(1);
|
|
#ifndef DEBUG
|
|
tcflush(FD, TCIOFLUSH);
|
|
#endif
|
|
write(FD, "ATH0\r", 5); /* insurance */
|
|
#ifndef DEBUG
|
|
c = gobble("03");
|
|
if (c != '0' && c != '3') {
|
|
printf("cannot hang up modem\n\r");
|
|
printf("please use 'tip dialer' to make sure the line is hung up\n\r");
|
|
}
|
|
#endif
|
|
sleep(1);
|
|
ioctl(FD, FIONREAD, &len);
|
|
#ifdef DEBUG
|
|
printf("goodbye1: len=%d -- ", len);
|
|
rlen = read(FD, dumbuf, min(len, DUMBUFLEN));
|
|
dumbuf[rlen] = '\0';
|
|
printf("read (%d): %s\r\n", rlen, dumbuf);
|
|
#endif
|
|
write(FD, "ATv1\r", 5);
|
|
sleep(1);
|
|
#ifdef DEBUG
|
|
ioctl(FD, FIONREAD, &len);
|
|
printf("goodbye2: len=%d -- ", len);
|
|
rlen = read(FD, dumbuf, min(len, DUMBUFLEN));
|
|
dumbuf[rlen] = '\0';
|
|
printf("read (%d): %s\r\n", rlen, dumbuf);
|
|
#endif
|
|
}
|
|
tcflush(FD, TCIOFLUSH);
|
|
ioctl(FD, TIOCCDTR, 0); /* clear DTR (insurance) */
|
|
close(FD);
|
|
}
|
|
|
|
#define MAXRETRY 5
|
|
|
|
static int
|
|
hay_sync(void)
|
|
{
|
|
int len, retry = 0;
|
|
|
|
while (retry++ <= MAXRETRY) {
|
|
write(FD, "AT\r", 3);
|
|
sleep(1);
|
|
ioctl(FD, FIONREAD, &len);
|
|
if (len) {
|
|
len = read(FD, dumbuf, min(len, DUMBUFLEN));
|
|
if (strchr(dumbuf, '0') ||
|
|
(strchr(dumbuf, 'O') && strchr(dumbuf, 'K')))
|
|
return(1);
|
|
#ifdef DEBUG
|
|
dumbuf[len] = '\0';
|
|
printf("hay_sync: (\"%s\") %d\n\r", dumbuf, retry);
|
|
#endif
|
|
}
|
|
ioctl(FD, TIOCCDTR, 0);
|
|
ioctl(FD, TIOCSDTR, 0);
|
|
}
|
|
printf("Cannot synchronize with hayes...\n\r");
|
|
return(0);
|
|
}
|