383 lines
8.4 KiB
C
383 lines
8.4 KiB
C
/* $NetBSD: courier.c,v 1.5 1995/10/29 00:49:50 pk Exp $ */
|
|
|
|
/*
|
|
* 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
|
|
#if 0
|
|
static char sccsid[] = "@(#)courier.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static char rcsid[] = "$NetBSD: courier.c,v 1.5 1995/10/29 00:49:50 pk Exp $";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Routines for calling up on a Courier modem.
|
|
* Derived from Hayes driver.
|
|
*/
|
|
#include "tip.h"
|
|
#include <sys/ioctl.h>
|
|
#include <stdio.h>
|
|
|
|
#define MAXRETRY 5
|
|
|
|
static void sigALRM();
|
|
static int timeout = 0;
|
|
static int connected = 0;
|
|
static jmp_buf timeoutbuf, intbuf;
|
|
static int coursync();
|
|
|
|
cour_dialer(num, acu)
|
|
register char *num;
|
|
char *acu;
|
|
{
|
|
register char *cp;
|
|
#ifdef ACULOG
|
|
char line[80];
|
|
#endif
|
|
struct termios cntrl;
|
|
static int cour_connect(), cour_swallow();
|
|
|
|
if (boolean(value(VERBOSE)))
|
|
printf("Using \"%s\"\n", acu);
|
|
|
|
tcgetattr(FD, &cntrl);
|
|
cntrl.c_cflag |= HUPCL;
|
|
tcsetattr(FD, TCSAFLUSH, &cntrl);
|
|
/*
|
|
* Get in synch.
|
|
*/
|
|
if (!coursync()) {
|
|
badsynch:
|
|
printf("can't synchronize with courier\n");
|
|
#ifdef ACULOG
|
|
logent(value(HOST), num, "courier", "can't synch up");
|
|
#endif
|
|
return (0);
|
|
}
|
|
cour_write(FD, "AT E0\r", 6); /* turn off echoing */
|
|
sleep(1);
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
cour_verbose_read();
|
|
#endif
|
|
tcflush(FD, TCIOFLUSH);
|
|
cour_write(FD, "AT C1 E0 H0 Q0 X6 V1\r", 21);
|
|
if (!cour_swallow("\r\nOK\r\n"))
|
|
goto badsynch;
|
|
fflush(stdout);
|
|
cour_write(FD, "AT D", 4);
|
|
for (cp = num; *cp; cp++)
|
|
if (*cp == '=')
|
|
*cp = ',';
|
|
cour_write(FD, num, strlen(num));
|
|
cour_write(FD, "\r", 1);
|
|
connected = cour_connect();
|
|
#ifdef ACULOG
|
|
if (timeout) {
|
|
sprintf(line, "%d second dial timeout",
|
|
number(value(DIALTIMEOUT)));
|
|
logent(value(HOST), num, "cour", line);
|
|
}
|
|
#endif
|
|
if (timeout)
|
|
cour_disconnect();
|
|
return (connected);
|
|
}
|
|
|
|
cour_disconnect()
|
|
{
|
|
/* first hang up the modem*/
|
|
ioctl(FD, TIOCCDTR, 0);
|
|
sleep(1);
|
|
ioctl(FD, TIOCSDTR, 0);
|
|
coursync(); /* reset */
|
|
close(FD);
|
|
}
|
|
|
|
cour_abort()
|
|
{
|
|
cour_write(FD, "\r", 1); /* send anything to abort the call */
|
|
cour_disconnect();
|
|
}
|
|
|
|
static void
|
|
sigALRM()
|
|
{
|
|
printf("\07timeout waiting for reply\n");
|
|
timeout = 1;
|
|
longjmp(timeoutbuf, 1);
|
|
}
|
|
|
|
static int
|
|
cour_swallow(match)
|
|
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);
|
|
}
|
|
|
|
struct baud_msg {
|
|
char *msg;
|
|
int baud;
|
|
} baud_msg[] = {
|
|
"", B300,
|
|
" 1200", B1200,
|
|
" 2400", B2400,
|
|
" 9600", B9600,
|
|
" 9600/ARQ", B9600,
|
|
0, 0,
|
|
};
|
|
|
|
static int
|
|
cour_connect()
|
|
{
|
|
char c;
|
|
int nc, nl, n;
|
|
char dialer_buf[64];
|
|
struct baud_msg *bm;
|
|
sig_t f;
|
|
|
|
if (cour_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 (cour_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;
|
|
for (bm = baud_msg ; bm->msg ; bm++)
|
|
if (strcmp(bm->msg,
|
|
dialer_buf+sizeof("CONNECT")-1) == 0) {
|
|
struct termios cntrl;
|
|
|
|
tcgetattr(FD, &cntrl);
|
|
cfsetospeed(&cntrl, bm->baud);
|
|
cfsetispeed(&cntrl, bm->baud);
|
|
tcsetattr(FD, TCSAFLUSH, &cntrl);
|
|
signal(SIGALRM, f);
|
|
#ifdef DEBUG
|
|
if (boolean(value(VERBOSE)))
|
|
printf("%s\r\n", dialer_buf);
|
|
#endif
|
|
return (1);
|
|
}
|
|
break;
|
|
}
|
|
dialer_buf[nc] = c;
|
|
#ifdef notdef
|
|
if (boolean(value(VERBOSE)))
|
|
putchar(c);
|
|
#endif
|
|
}
|
|
error1:
|
|
printf("%s\r\n", dialer_buf);
|
|
error:
|
|
signal(SIGALRM, f);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This convoluted piece of code attempts to get
|
|
* the courier in sync.
|
|
*/
|
|
static int
|
|
coursync()
|
|
{
|
|
int already = 0;
|
|
int len;
|
|
char buf[40];
|
|
|
|
while (already++ < MAXRETRY) {
|
|
tcflush(FD, TCIOFLUSH);
|
|
cour_write(FD, "\rAT Z\r", 6); /* reset modem */
|
|
bzero(buf, sizeof(buf));
|
|
sleep(1);
|
|
ioctl(FD, FIONREAD, &len);
|
|
if (len) {
|
|
len = read(FD, buf, sizeof(buf));
|
|
#ifdef DEBUG
|
|
buf[len] = '\0';
|
|
printf("coursync: (\"%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.
|
|
*/
|
|
sleep(1);
|
|
cour_write(FD, "+++", 3);
|
|
sleep(1);
|
|
/*
|
|
* Toggle DTR to force anyone off that might have left
|
|
* the modem connected.
|
|
*/
|
|
ioctl(FD, TIOCCDTR, 0);
|
|
sleep(1);
|
|
ioctl(FD, TIOCSDTR, 0);
|
|
}
|
|
cour_write(FD, "\rAT Z\r", 6);
|
|
return (0);
|
|
}
|
|
|
|
cour_write(fd, cp, n)
|
|
int fd;
|
|
char *cp;
|
|
int n;
|
|
{
|
|
#ifdef notdef
|
|
if (boolean(value(VERBOSE)))
|
|
write(1, cp, n);
|
|
#endif
|
|
tcdrain(fd);
|
|
cour_nap();
|
|
for ( ; n-- ; cp++) {
|
|
write(fd, cp, 1);
|
|
tcdrain(fd);
|
|
cour_nap();
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
cour_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
|
|
|
|
/*
|
|
* Code stolen from /usr/src/lib/libc/gen/sleep.c
|
|
*/
|
|
#define mask(s) (1<<((s)-1))
|
|
#define setvec(vec, a) \
|
|
vec.sv_handler = a; vec.sv_mask = vec.sv_onstack = 0
|
|
|
|
static napms = 50; /* Give the courier 50 milliseconds between characters */
|
|
|
|
static int ringring;
|
|
|
|
cour_nap()
|
|
{
|
|
|
|
static void cour_napx();
|
|
int omask;
|
|
struct itimerval itv, oitv;
|
|
register struct itimerval *itp = &itv;
|
|
struct sigvec vec, ovec;
|
|
|
|
timerclear(&itp->it_interval);
|
|
timerclear(&itp->it_value);
|
|
if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
|
|
return;
|
|
setvec(ovec, SIG_DFL);
|
|
omask = sigblock(mask(SIGALRM));
|
|
itp->it_value.tv_sec = napms/1000;
|
|
itp->it_value.tv_usec = ((napms%1000)*1000);
|
|
setvec(vec, cour_napx);
|
|
ringring = 0;
|
|
(void) sigvec(SIGALRM, &vec, &ovec);
|
|
(void) setitimer(ITIMER_REAL, itp, (struct itimerval *)0);
|
|
while (!ringring)
|
|
sigpause(omask &~ mask(SIGALRM));
|
|
(void) sigvec(SIGALRM, &ovec, (struct sigvec *)0);
|
|
(void) setitimer(ITIMER_REAL, &oitv, (struct itimerval *)0);
|
|
(void) sigsetmask(omask);
|
|
}
|
|
|
|
static void
|
|
cour_napx()
|
|
{
|
|
ringring = 1;
|
|
}
|