xref: /openbsd-src/usr.bin/talk/talk.c (revision 734909455d9253e8b5b07aea0f2b1944bbb3cb23)

/*	$OpenBSD: talk.c,v 1.12 2016/03/08 20:07:46 mestre Exp $	*/
/*	$NetBSD: talk.c,v 1.3 1994/12/09 02:14:25 jtc Exp $	*/

/*
 * 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 <err.h>
#include <string.h>
#include <unistd.h>

#include "talk.h"
#include "talk_ctl.h"

/*
 * talk:	A visual form of write. Using sockets, a two way
 *		connection is set up between the two people talking.
 *		With the aid of curses, the screen is split into two
 *		windows, and each users text is added to the window,
 *		one character at a time...
 *
 *		Written by Kipp Hickman
 *
 *		Modified to run under 4.1a by Clem Cole and Peter Moore
 *		Modified to run between hosts by Peter Moore, 8/19/82
 *		Modified to run under 4.1c by Peter Moore 3/17/83
 */

int
main(int argc, char *argv[])
{
	if (pledge("stdio rpath inet dns getpw tty", NULL) == -1)
		err(1, "pledge");

	get_names(argc, argv);
	init_display();
	open_ctl();
	open_sockt();
	start_msgs();
	if (!check_local())
		invite_remote();
	end_msgs();
	set_edit_chars();

	if (his_machine_addr.s_addr == my_machine_addr.s_addr) {
		if (pledge("stdio tty", NULL) == -1)
			err(1, "pledge");
	} else {
		if (pledge("stdio inet tty", NULL) == -1)
			err(1, "pledge");
	}

	talk();
	return (0);
}