/*
 * $Id$
 *
 * Copyright (C) 2012 Smile Communications, jason.penton@smilecoms.com
 * Copyright (C) 2012 Smile Communications, richard.good@smilecoms.com
 *
 * The initial version of this code was written by Dragos Vingarzan
 * (dragos(dot)vingarzan(at)fokus(dot)fraunhofer(dot)de and the
 * Fruanhofer Institute. It was and still is maintained in a separate
 * branch of the original SER. We are therefore migrating it to
 * Kamailio/SR and look forward to maintaining it from here on out.
 * 2011/2012 Smile Communications, Pty. Ltd.
 * ported/maintained/improved by
 * Jason Penton (jason(dot)penton(at)smilecoms.com and
 * Richard Good (richard(dot)good(at)smilecoms.com) as part of an
 * effort to add full IMS support to Kamailio/SR using a new and
 * improved architecture
 *
 * NB: Alot of this code was originally part of OpenIMSCore,
 * FhG Fokus.
 * Copyright (C) 2004-2006 FhG Fokus
 * Thanks for great work! This is an effort to
 * break apart the various CSCF functions into logically separate
 * components. We hope this will drive wider use. We also feel
 * that in this way the architecture is more complete and thereby easier
 * to manage in the Kamailio/SR environment
 *
 * 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 _UL_CALLBACKS_H
#define _UL_CALLBACKS_H

#include "../../core/dprint.h"
#include "../../core/parser/msg_parser.h"
#include "../../core/parser/contact/parse_contact.h"
#include "../../core/ut.h"
#include "../ims_usrloc_pcscf/usrloc.h"
#include "../../lib/ims/ims_getters.h"

struct pcontact;

#define PCSCF_CONTACT_INSERT (1 << 0)
#define PCSCF_CONTACT_UPDATE (1 << 1)
#define PCSCF_CONTACT_DELETE (1 << 2)
#define PCSCF_CONTACT_EXPIRE (1 << 3)
#define PCSCF_MAX ((1 << 4) - 1)

typedef void(ul_cb)(struct pcontact *c, int type,
		void *param); /*! \brief callback function prototype */
typedef int (*register_ulcb_t)(struct pcontact *c, int cb_types, ul_cb f,
		void *param); /*! \brief register callback function prototype */
typedef int (*is_ulcb_registered_t)(struct pcontact *c, ul_cb f);

struct ul_callback
{
	int types;		 /*!< types of events that trigger the callback*/
	ul_cb *callback; /*!< callback function */
	void *param;	 /*!< param to be passed to callback function */
	//param_free_cb* callback_param_free;
	struct ul_callback *next;
};

struct ulcb_head_list
{
	struct ul_callback *first;
	int reg_types;
};

extern struct ulcb_head_list
		*ulcb_list; /*!< this is the list for the INSERT callbacks*/

#define exists_ulcb_type(_types_) ((ulcb_list->reg_types) | (_types_))

int init_ulcb_list(void);
void destroy_ulcb_list(void);
void destroy_ul_callbacks_list(struct ul_callback *cb);
int register_ulcb(struct pcontact *c, int types, ul_cb f, void *param);
void delete_ulcb(struct pcontact *c, int type);
int register_ulcb_method(struct pcontact *c, int types, ul_cb f, void *param);
void run_ul_callbacks(int type, struct pcontact *c);
void run_ul_create_callbacks(struct pcontact *c);
int is_ulcb_registered(struct pcontact *c, ul_cb f);

#endif
