ctl.h

早期freebsd实现

/*-
 * Copyright (c) 1983, 1985
 *	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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 *
 *	@(#)ctl.h	5.1 (Berkeley) 6/6/85
 */

/*
 * ctl.h describes the structure that
 * talk and talkd pass back and forth.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#define	NAME_SIZE	9
#define	TTY_SIZE	16
#define	HOST_NAME_LENGTH 256

#define MAX_LIFE	60	/* max time daemon saves invitations */
/* RING_WAIT should be 10's of seconds less than MAX_LIFE */
#define RING_WAIT	30	/* time to wait before refreshing invitation */

/* type values */
#define LEAVE_INVITE	0
#define LOOK_UP		1
#define DELETE		2
#define ANNOUNCE	3

/* answer values */
#define SUCCESS		0
#define NOT_HERE	1
#define FAILED		2
#define MACHINE_UNKNOWN	3
#define PERMISSION_DENIED 4
#define UNKNOWN_REQUEST	5

typedef struct ctl_response {
	char	type;
	char	answer;
	int	id_num;
	struct	sockaddr_in addr;
} CTL_RESPONSE;

typedef struct ctl_msg {
	char	type;
	char	l_name[NAME_SIZE];
	char	r_name[NAME_SIZE];
	int	id_num;
	int	pid;
	char	r_tty[TTY_SIZE];
	struct	sockaddr_in addr;
	struct	sockaddr_in ctl_addr;
} CTL_MSG;