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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1994 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* this file contains the I/O handling and the exchange of
* edit characters. This connection itself is established in ctl.c
*/
#include "talk.h"
#include <stdio.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/filio.h>
#include <libintl.h>
#define A_LONG_TIME 10000000
#define STDIN_MASK (1<<fileno(stdin)) /* the bit mask for standard input */
extern int errno;
extern int sys_nerr;
/*
* The routine to do the actual talking
*/
void
talk()
{
register int read_template, sockt_mask;
int read_set, nb;
char buf[BUFSIZ];
struct timeval wait;
message(gettext("Connection established"));
beep(); beep(); beep();
current_line = 0;
sockt_mask = (1<<sockt);
/*
* wait on both the other process (sockt_mask) and
* standard input ( STDIN_MASK )
*/
read_template = sockt_mask | STDIN_MASK;
forever {
read_set = read_template;
wait.tv_sec = A_LONG_TIME;
wait.tv_usec = 0;
nb = select(32, (fd_set *)&read_set, 0, 0, &wait);
if (nb <= 0) {
/* We may be returning from an interrupt handler */
if (errno == EINTR) {
read_set = read_template;
continue;
} else {
/* panic, we don't know what happened */
p_error(
gettext("Unexpected error from select"));
quit();
}
}
if (read_set & sockt_mask) {
/* There is data on sockt */
nb = read(sockt, buf, sizeof (buf));
if (nb <= 0) {
message(gettext("Connection closed. Exiting"));
pause(); /* wait for Ctrl-C */
quit();
} else {
display(&rem_win, buf, nb);
}
}
if (read_set & STDIN_MASK) {
/*
* we can't make the tty non_blocking, because
* curses's output routines would screw up
*/
ioctl(0, FIONREAD, (struct sgttyb *)&nb);
nb = read(0, buf, nb);
display(&my_win, buf, nb);
write(sockt, buf, nb);
/* We might lose data here because sockt is non-blocking */
}
}
}
/*
* p_error prints the system error message on the standard location
* on the screen and then exits. (i.e. a curses version of perror)
*/
void
p_error(string)
char *string;
{
char *sys;
if (errno < sys_nerr) {
sys = strerror(errno);
} else {
sys = gettext("Unknown error");
}
wmove(my_win.x_win, current_line%my_win.x_nlines, 0);
wprintw(my_win.x_win, "[%s : %s (%d)]\n", string, sys, errno);
wrefresh(my_win.x_win);
move(LINES-1, 0);
refresh();
quit();
}
/* display string in the standard location */
void
message(string)
char *string;
{
wmove(my_win.x_win, current_line%my_win.x_nlines, 0);
wprintw(my_win.x_win, "[%s]\n", string);
wrefresh(my_win.x_win);
}
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