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rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: ctl.c,v 1.11 2009/10/27 23:59:44 deraadt Exp $	*/
/*	$NetBSD: ctl.c,v 1.3 1994/12/09 02:14:10 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.
 */

/*
 * This file handles haggling with the various talk daemons to
 * get a socket to talk to. sockt is opened and connected in
 * the progress
 */

#include "talk.h"
#include <arpa/inet.h>
#include "talk_ctl.h"

struct	sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
struct	sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
struct	sockaddr_in my_addr = { sizeof(my_addr), AF_INET };

	/* inet addresses of the two machines */
struct	in_addr my_machine_addr;
struct	in_addr his_machine_addr;

u_short daemon_port;	/* port number of the talk daemon */

int	ctl_sockt;
int	sockt;
int	invitation_waiting = 0;

CTL_MSG msg;

void
open_sockt(void)
{
	socklen_t length;

	my_addr.sin_addr = my_machine_addr;
	my_addr.sin_port = 0;
	sockt = socket(AF_INET, SOCK_STREAM, 0);
	if (sockt == -1)
		quit("Bad socket", 1);
	if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
		quit("Binding local socket", 1);
	length = sizeof(my_addr);
	if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
		quit("Bad address for socket", 1);
}

/* open the ctl socket */
void
open_ctl(void)
{
	socklen_t length;

	ctl_addr.sin_port = 0;
	ctl_addr.sin_addr = my_machine_addr;
	ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
	if (ctl_sockt == -1)
		quit("Bad socket", 1);
	if (bind(ctl_sockt,
	    (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
		quit("Couldn't bind to control socket", 1);
	length = sizeof(ctl_addr);
	if (getsockname(ctl_sockt,
	    (struct sockaddr *)&ctl_addr, &length) == -1)
		quit("Bad address for ctl socket", 1);
}