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/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "tip.h"
#define MAXRETRY 3 /* sync up retry count */
#define DISCONNECT_CMD "\21\25\11\24" /* disconnection string */
static int detect(char *);
static int bizsync(int);
static void echo(char *);
static void flush(char *);
static void sigALRM(void);
static int timeout = 0;
static sigjmp_buf timeoutbuf;
void biz31_disconnect(void);
/*
* Dial up on a BIZCOMP Model 1031 with either
* tone dialing (mod = "f")
* pulse dialing (mod = "w")
*/
static int
biz_dialer(char *num, char *mod)
{
int connected = 0;
if (!bizsync(FD)) {
logent(value(HOST), "", "biz", "out of sync");
(void) printf("bizcomp out of sync\n");
delock(uucplock);
exit(0);
}
if (boolean(value(VERBOSE)))
(void) printf("\nstarting call...");
echo("#\rk$\r$\n"); /* disable auto-answer */
echo("$>$.$ #\r"); /* tone/pulse dialing */
echo(mod);
echo("$\r$\n");
echo("$>$.$ #\re$ "); /* disconnection sequence */
echo(DISCONNECT_CMD);
echo("\r$\n$\r$\n");
echo("$>$.$ #\rr$ "); /* repeat dial */
echo(num);
echo("\r$\n");
if (boolean(value(VERBOSE)))
(void) printf("ringing...");
/*
* The reply from the BIZCOMP should be:
* `^G NO CONNECTION\r\n^G\r\n' failure
* ` CONNECTION\r\n^G' success
*/
connected = detect(" ");
#ifdef ACULOG
if (timeout) {
char line[80];
(void) sprintf(line, "%d second dial timeout",
number(value(DIALTIMEOUT)));
logent(value(HOST), num, "biz", line);
}
#endif
if (!connected)
flush(" NO CONNECTION\r\n\07\r\n");
else
flush("CONNECTION\r\n\07");
if (timeout)
biz31_disconnect(); /* insurance */
return (connected);
}
/* ARGSUSED */
int
biz31w_dialer(char *num, char *acu)
{
return (biz_dialer(num, "w"));
}
/* ARGSUSED */
int
biz31f_dialer(char *num, char *acu)
{
return (biz_dialer(num, "f"));
}
void
biz31_disconnect(void)
{
(void) write(FD, DISCONNECT_CMD, 4);
(void) sleep(2);
(void) ioctl(FD, TCFLSH, TCOFLUSH);
}
void
biz31_abort(void)
{
(void) write(FD, "\33", 1);
}
static void
echo(char *s)
{
char c;
while (c = *s++) {
switch (c) {
case '$':
(void) read(FD, &c, 1);
s++;
break;
case '#':
c = *s++;
(void) write(FD, &c, 1);
break;
default:
(void) write(FD, &c, 1);
(void) read(FD, &c, 1);
}
}
}
static void
sigALRM(void)
{
timeout = 1;
siglongjmp(timeoutbuf, 1);
}
static int
detect(char *s)
{
char c;
sig_handler_t f;
f = signal(SIGALRM, (sig_handler_t)sigALRM);
timeout = 0;
while (*s) {
if (sigsetjmp(timeoutbuf, 1)) {
(void) printf("\07timeout waiting for reply\n");
biz31_abort();
break;
}
(void) alarm(number(value(DIALTIMEOUT)));
(void) read(FD, &c, 1);
(void) alarm(0);
if (c != *s++)
break;
}
(void) signal(SIGALRM, f);
return (timeout == 0);
}
static void
flush(char *s)
{
char c;
sig_handler_t f;
f = signal(SIGALRM, (sig_handler_t)sigALRM);
while (*s++) {
if (sigsetjmp(timeoutbuf, 1))
break;
(void) alarm(10);
(void) read(FD, &c, 1);
(void) alarm(0);
}
(void) signal(SIGALRM, f);
timeout = 0; /* guard against disconnection */
}
/*
* This convoluted piece of code attempts to get
* the bizcomp in sync. If you don't have the capacity or nread
* call there are gory ways to simulate this.
*/
static int
bizsync(int fd)
{
#ifdef FIOCAPACITY
struct capacity b;
#define chars(b) ((b).cp_nbytes)
#define IOCTL FIOCAPACITY
#endif
#ifdef FIONREAD
long b;
#define chars(b) (b)
#define IOCTL FIONREAD
#endif
int already = 0;
char buf[10];
retry:
if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0 && chars(b) > 0)
(void) ioctl(fd, TCFLSH, TCIOFLUSH);
(void) write(fd, "\rp>\r", 4);
(void) sleep(1);
if (ioctl(fd, IOCTL, (caddr_t)&b) >= 0) {
if (chars(b) != 10) {
nono:
if (already > MAXRETRY)
return (0);
(void) write(fd, DISCONNECT_CMD, 4);
(void) sleep(2);
already++;
goto retry;
} else {
(void) read(fd, buf, 10);
if (strncmp(buf, "p >\r\n\r\n>", 8))
goto nono;
}
}
return (1);
}
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