ctl.c

早期freebsd实现

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#include "bsd.h"

#if	defined(TALK_43) || defined(TALK_42) 

#ifndef lint
static char sccsid[] = "@(#)ctl.c	5.2 (Berkeley) 3/13/86";
#endif

/*
 * 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_ctl.h"

struct	sockaddr_in daemon_addr = { AF_INET };
struct	sockaddr_in ctl_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;

CTL_MSG msg;

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

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