d030d2d2ae
plain 0 should be used. This happens to work because we #define NULL to 0, but is stylistically wrong and can cause problems for people trying to port bits of code to other environments. PR: 2752 Submitted by: Arne Henrik Juul <arnej@imf.unit.no>
403 lines
9.2 KiB
C
403 lines
9.2 KiB
C
/*
|
|
* Copyright (c) 1986, 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)multitech.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Routines for calling up on a Courier modem.
|
|
* Derived from Hayes driver.
|
|
*/
|
|
#include "tipconf.h"
|
|
#include "tip.h"
|
|
#include "acucommon.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
/* #define DEBUG */
|
|
#define MAXRETRY 5
|
|
/*
|
|
Configuration
|
|
*/
|
|
static CONST char *dial_command = "ATDT";
|
|
static CONST char *hangup_command = "ATH\r";
|
|
static CONST char *echo_off_command = "ATE0\r";
|
|
static CONST char *reset_command = "\rATZ\r";
|
|
static CONST char *init_string = "AT$BA0$SB38400&E1&E4&E13&E15Q0V1X4E0S0=0\r";
|
|
static CONST char *escape_sequence = "+++"; /* return to command escape sequence */
|
|
static CONST int lock_baud = 1;
|
|
static CONST unsigned int intercharacter_delay = 20;
|
|
static CONST unsigned int intercommand_delay = 250;
|
|
static CONST unsigned int escape_guard_time = 250;
|
|
static CONST unsigned int reset_delay = 2000;
|
|
|
|
/*
|
|
Forward declarations
|
|
*/
|
|
void multitech_write (int fd, CONST char *cp, int n);
|
|
void multitech_write_str (int fd, CONST char *cp);
|
|
void multitech_disconnect ();
|
|
void acu_nap (unsigned int how_long);
|
|
static void sigALRM ();
|
|
static int multitechsync ();
|
|
static int multitech_swallow (register char *match);
|
|
|
|
/*
|
|
Global vars
|
|
*/
|
|
static int timeout = 0;
|
|
static int connected = 0;
|
|
static jmp_buf timeoutbuf, intbuf;
|
|
|
|
int multitech_dialer (register char *num, char *acu)
|
|
{
|
|
register char *cp;
|
|
#if ACULOG
|
|
char line [80];
|
|
#endif
|
|
static int multitech_connect(), multitech_swallow();
|
|
|
|
if (lock_baud)
|
|
{
|
|
int i;
|
|
if ((i = speed(number(value(BAUDRATE)))) == 0)
|
|
return 0;
|
|
ttysetup (i);
|
|
}
|
|
|
|
if (boolean(value(VERBOSE)))
|
|
printf("Using \"%s\"\n", acu);
|
|
|
|
acu_hupcl ();
|
|
|
|
/*
|
|
* Get in synch.
|
|
*/
|
|
if (!multitechsync()) {
|
|
badsynch:
|
|
printf("can't synchronize with multitech\n");
|
|
#if ACULOG
|
|
logent(value(HOST), num, "multitech", "can't synch up");
|
|
#endif
|
|
return (0);
|
|
}
|
|
acu_nap (intercommand_delay);
|
|
|
|
multitech_write_str (FD, echo_off_command); /* turn off echoing */
|
|
|
|
sleep(1);
|
|
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
multitech_verbose_read();
|
|
#endif
|
|
|
|
acu_flush ();
|
|
|
|
acu_nap (intercommand_delay);
|
|
multitech_write_str (FD, init_string);
|
|
|
|
if (!multitech_swallow ("\r\nOK\r\n"))
|
|
goto badsynch;
|
|
|
|
fflush (stdout);
|
|
|
|
acu_nap (intercommand_delay);
|
|
multitech_write_str (FD, dial_command);
|
|
|
|
for (cp = num; *cp; cp++)
|
|
if (*cp == '=')
|
|
*cp = ',';
|
|
|
|
multitech_write_str (FD, num);
|
|
|
|
multitech_write_str (FD, "\r");
|
|
|
|
connected = multitech_connect();
|
|
|
|
#if ACULOG
|
|
if (timeout) {
|
|
sprintf(line, "%d second dial timeout",
|
|
number(value(DIALTIMEOUT)));
|
|
logent(value(HOST), num, "multitech", line);
|
|
}
|
|
#endif
|
|
if (timeout)
|
|
multitech_disconnect ();
|
|
return (connected);
|
|
}
|
|
|
|
void multitech_disconnect ()
|
|
{
|
|
int okay, retries;
|
|
for (retries = okay = 0; retries < 3 && !okay; retries++)
|
|
{
|
|
/* first hang up the modem*/
|
|
ioctl (FD, TIOCCDTR, 0);
|
|
acu_nap (escape_guard_time);
|
|
ioctl (FD, TIOCSDTR, 0);
|
|
acu_nap (escape_guard_time);
|
|
/*
|
|
* If not strapped for DTR control, try to get command mode.
|
|
*/
|
|
acu_nap (escape_guard_time);
|
|
multitech_write_str (FD, escape_sequence);
|
|
acu_nap (escape_guard_time);
|
|
multitech_write_str (FD, hangup_command);
|
|
okay = multitech_swallow ("\r\nOK\r\n");
|
|
}
|
|
if (!okay)
|
|
{
|
|
#if ACULOG
|
|
logent(value(HOST), "", "multitech", "can't hang up modem");
|
|
#endif
|
|
if (boolean(value(VERBOSE)))
|
|
printf("hang up failed\n");
|
|
}
|
|
close (FD);
|
|
}
|
|
|
|
void multitech_abort ()
|
|
{
|
|
multitech_write_str (FD, "\r"); /* send anything to abort the call */
|
|
multitech_disconnect ();
|
|
}
|
|
|
|
static void sigALRM ()
|
|
{
|
|
(void) printf("\07timeout waiting for reply\n");
|
|
timeout = 1;
|
|
longjmp(timeoutbuf, 1);
|
|
}
|
|
|
|
static int multitech_swallow (register char *match)
|
|
{
|
|
sig_t f;
|
|
char c;
|
|
|
|
f = signal(SIGALRM, sigALRM);
|
|
timeout = 0;
|
|
do {
|
|
if (*match =='\0') {
|
|
signal(SIGALRM, f);
|
|
return (1);
|
|
}
|
|
if (setjmp(timeoutbuf)) {
|
|
signal(SIGALRM, f);
|
|
return (0);
|
|
}
|
|
alarm(number(value(DIALTIMEOUT)));
|
|
read(FD, &c, 1);
|
|
alarm(0);
|
|
c &= 0177;
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
putchar(c);
|
|
#endif
|
|
} while (c == *match++);
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
fflush (stdout);
|
|
#endif
|
|
signal(SIGALRM, SIG_DFL);
|
|
return (0);
|
|
}
|
|
|
|
static struct baud_msg {
|
|
char *msg;
|
|
int baud;
|
|
} baud_msg[] = {
|
|
"", B300,
|
|
" 1200", B1200,
|
|
" 2400", B2400,
|
|
" 9600", B9600,
|
|
" 9600/ARQ", B9600,
|
|
0, 0,
|
|
};
|
|
|
|
static int multitech_connect ()
|
|
{
|
|
char c;
|
|
int nc, nl, n;
|
|
char dialer_buf[64];
|
|
struct baud_msg *bm;
|
|
sig_t f;
|
|
|
|
if (multitech_swallow("\r\n") == 0)
|
|
return (0);
|
|
f = signal(SIGALRM, sigALRM);
|
|
again:
|
|
nc = 0; nl = sizeof(dialer_buf)-1;
|
|
bzero(dialer_buf, sizeof(dialer_buf));
|
|
timeout = 0;
|
|
for (nc = 0, nl = sizeof(dialer_buf)-1 ; nl > 0 ; nc++, nl--) {
|
|
if (setjmp(timeoutbuf))
|
|
break;
|
|
alarm(number(value(DIALTIMEOUT)));
|
|
n = read(FD, &c, 1);
|
|
alarm(0);
|
|
if (n <= 0)
|
|
break;
|
|
c &= 0x7f;
|
|
if (c == '\r') {
|
|
if (multitech_swallow("\n") == 0)
|
|
break;
|
|
if (!dialer_buf[0])
|
|
goto again;
|
|
if (strcmp(dialer_buf, "RINGING") == 0 &&
|
|
boolean(value(VERBOSE))) {
|
|
#ifdef DEBUG
|
|
printf("%s\r\n", dialer_buf);
|
|
#endif
|
|
goto again;
|
|
}
|
|
if (strncmp(dialer_buf, "CONNECT",
|
|
sizeof("CONNECT")-1) != 0)
|
|
break;
|
|
if (lock_baud) {
|
|
signal(SIGALRM, f);
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
printf("%s\r\n", dialer_buf);
|
|
#endif
|
|
return (1);
|
|
}
|
|
for (bm = baud_msg ; bm->msg ; bm++)
|
|
if (strcmp(bm->msg, dialer_buf+sizeof("CONNECT")-1) == 0) {
|
|
if (!acu_setspeed (bm->baud))
|
|
goto error;
|
|
signal(SIGALRM, f);
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
printf("%s\r\n", dialer_buf);
|
|
#endif
|
|
return (1);
|
|
}
|
|
break;
|
|
}
|
|
dialer_buf[nc] = c;
|
|
}
|
|
error1:
|
|
printf("%s\r\n", dialer_buf);
|
|
error:
|
|
signal(SIGALRM, f);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This convoluted piece of code attempts to get
|
|
* the multitech in sync.
|
|
*/
|
|
static int multitechsync ()
|
|
{
|
|
int already = 0;
|
|
int len;
|
|
char buf[40];
|
|
|
|
while (already++ < MAXRETRY) {
|
|
acu_nap (intercommand_delay);
|
|
ioctl (FD, TIOCFLUSH, 0); /* flush any clutter */
|
|
multitech_write_str (FD, reset_command); /* reset modem */
|
|
bzero(buf, sizeof(buf));
|
|
acu_nap (reset_delay);
|
|
ioctl (FD, FIONREAD, &len);
|
|
if (len) {
|
|
len = read(FD, buf, sizeof(buf));
|
|
#ifdef DEBUG
|
|
buf [len] = '\0';
|
|
printf("multitechsync: (\"%s\")\n\r", buf);
|
|
#endif
|
|
if (index(buf, '0') ||
|
|
(index(buf, 'O') && index(buf, 'K')))
|
|
return(1);
|
|
}
|
|
/*
|
|
* If not strapped for DTR control,
|
|
* try to get command mode.
|
|
*/
|
|
acu_nap (escape_guard_time);
|
|
multitech_write_str (FD, escape_sequence);
|
|
acu_nap (escape_guard_time);
|
|
multitech_write_str (FD, hangup_command);
|
|
/*
|
|
* Toggle DTR to force anyone off that might have left
|
|
* the modem connected.
|
|
*/
|
|
acu_nap (escape_guard_time);
|
|
ioctl (FD, TIOCCDTR, 0);
|
|
acu_nap (escape_guard_time);
|
|
ioctl (FD, TIOCSDTR, 0);
|
|
}
|
|
acu_nap (intercommand_delay);
|
|
multitech_write_str (FD, reset_command);
|
|
return (0);
|
|
}
|
|
|
|
void multitech_write_str (int fd, const char *cp)
|
|
{
|
|
#ifdef DEBUG
|
|
printf ("multitech: sending %s\n", cp);
|
|
#endif
|
|
multitech_write (fd, cp, strlen (cp));
|
|
}
|
|
|
|
void multitech_write (int fd, const char *cp, int n)
|
|
{
|
|
acu_flush ();
|
|
acu_nap (intercharacter_delay);
|
|
for ( ; n-- ; cp++) {
|
|
write (fd, cp, 1);
|
|
acu_flush ();
|
|
acu_nap (intercharacter_delay);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
multitech_verbose_read()
|
|
{
|
|
int n = 0;
|
|
char buf[BUFSIZ];
|
|
|
|
if (ioctl(FD, FIONREAD, &n) < 0)
|
|
return;
|
|
if (n <= 0)
|
|
return;
|
|
if (read(FD, buf, n) != n)
|
|
return;
|
|
write(1, buf, n);
|
|
}
|
|
#endif
|
|
|
|
/* end of multitech.c */
|