/* conversation.h
 * Routines for building lists of packets that are part of a "conversation"
 *
 * $Id: conversation.h,v 1.4 2000/11/18 11:47:21 guy Exp $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@zing.org>
 * Copyright 1998 Gerald Combs
 *
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef __CONVERSATION_H__
#define __CONVERSATION_H__

/* 
* Conversation options values 
*/
#define NO_DST_ADDR 0x01
#define NO_DST_PORT 0x02

#include "packet.h"		/* for conversation dissector type */
/*
 * Data structure representing a conversation.
 */
typedef struct conversation_key {
	struct conversation_key *next;
	address	src;
	address	dst;
	port_type ptype;
	guint32	port_src;
	guint32	port_dst;
} conversation_key;

typedef struct conversation {
	struct conversation *next;	/* pointer to next conversation on hash chain */
	guint32	index;	/* unique ID for conversation */
	void	*data;	/* data our client can associate with a conversation */
	gboolean is_old_dissector;	/* XXX - nuke when everybody tvbuffified */
	union {
		old_dissector_t	old_d;
		dissector_t	new_d;
	} dissector; 			/* protocol dissector client can associate with conversation */
	guint	options;		/* wildcard flags */
	conversation_key *key_ptr;	/* pointer to the key for this conversation */
} conversation_t;

extern void conversation_init(void);

conversation_t *conversation_new(address *src, address *dst, port_type ptype,
    guint32 src_port, guint32 dst_port, void *data, guint options);

conversation_t *find_conversation(address *src, address *dst, port_type ptype,
    guint32 src_port, guint32 dst_port, guint options);

void old_conversation_set_dissector(conversation_t *conversation,
    old_dissector_t dissector);
void conversation_set_dissector(conversation_t *conversation,
    dissector_t dissector);
gboolean
try_conversation_dissector(address *src, address *dst, port_type ptype,
    guint32 src_port, guint32 dst_port, tvbuff_t *tvb, packet_info *pinfo,
    proto_tree *tree);

/* These routines are used to set undefined values for a conversation */

void conversation_set_port( conversation_t *conv, guint32 port);
void conversation_set_address( conversation_t *conv, address *addr);


#endif /* conversation.h */