/*
 * Copyright (C) 2012 Andrew Mortensen
 *
 * This file is part of the sca module for Kamailio, a free SIP server.
 *
 * The sca module 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
 *
 * The sca module 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 SCA_UTIL_H
#define SCA_UTIL_H

#include "sca_common.h"

enum
{
	SCA_AOR_TYPE_AUTO = (1 << 0),
	SCA_AOR_TYPE_UAC = (1 << 1),
	SCA_AOR_TYPE_UAS = (1 << 2),
};

// get method, regardless of whether message is a request or response
int sca_get_msg_method(sip_msg_t *);

// populate a str pointer with contact uri from a SIP request or response
int sca_get_msg_contact_uri(sip_msg_t *, str *);

// convenient extraction of cseq number from Cseq header
int sca_get_msg_cseq_number(sip_msg_t *);

// convenient extraction of cseq method from Cseq header
int sca_get_msg_cseq_method(sip_msg_t *);

// convenient From header parsing and extraction
int sca_get_msg_from_header(sip_msg_t *, struct to_body **);

// convenient To header parsing and extraction
int sca_get_msg_to_header(sip_msg_t *, struct to_body **);

int sca_build_to_body_from_uri(sip_msg_t *, struct to_body **, str *);

// count number of characters requiring escape as defined by escape_common
int sca_uri_display_escapes_count(str *);

// convenient AoR extraction from sip: URIs
int sca_uri_extract_aor(str *, str *);

// convenient AoR creation from a Contact URI and another AoR
int sca_uri_build_aor(str *, int, str *, str *);

int sca_aor_create_from_info(str *, uri_type, str *, str *, str *);

int sca_create_canonical_aor_for_ua(sip_msg_t *, str *, int);
int sca_create_canonical_aor(sip_msg_t *, str *);

// convenient call hold detection
int sca_call_is_held(sip_msg_t *);

#endif // SCA_UTIL_H