/*
 * Copyright (C) 2005-2009 Voice Sistem SRL
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * Kamailio 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.
 *
 * Kamailio 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */


#ifndef routing_h
#define routing_h

#include "../../core/str.h"
#include "../../core/usr_avp.h"
#include "prefix_tree.h"
#include "dr_time.h"

#define RG_HASH_SIZE
#define RG_INIT_LEN 4;

/* the buckets for the rt_data rg_hash */
typedef struct hb_
{
	int rgid;
	ptree_t *pt;
	struct hb_ *next;
} hb_t;

/* routing data is comprised of:
	- a list of PSTN gw
	- a hash over routing groups containing
	pointers to the corresponding prefix trees
*/
typedef struct rt_data_
{
	/* list of PSTN gw */
	pgw_t *pgw_l;
	/* list of IP addr for PSTN gw */
	pgw_addr_t *pgw_addr_l;
	/* default routing list for prefixless rules */
	ptree_node_t noprefix;
	/* hash table with routing prefixes */
	ptree_t *pt;
} rt_data_t;

typedef struct _dr_group
{
	/* 0 - use grp ; 1 - use AVP */
	int type;
	union
	{
		unsigned int grp_id;
		struct _avp_id
		{
			int_str name;
			unsigned short type;
		} avp_id;
	} u;
} dr_group_t;

/* init new rt_data structure */
rt_data_t *build_rt_data(void);


/* add a PSTN gw in the list */
int add_dst(rt_data_t *,
		/* id */
		int,
		/* ip address */
		char *,
		/* strip len */
		int,
		/* pri prefix */
		char *,
		/* dst type*/
		int,
		/* dst attrs*/
		char *);

/* build a routing info list element */
rt_info_t *build_rt_info(int priority, dr_tmrec_t *time,
		/* ser routing table id */
		int route_id,
		/* list of destinations indexes */
		char *dstlst, pgw_t *pgw_l);

void del_pgw_list(pgw_t *pgw_l);

void free_rt_data(rt_data_t *, int);
#endif