<?php
/*
#  Copyright (c) 2012, Gjøvik University College
#  All rights reserved.

#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:
#      * Redistributions of source code must retain the above copyright
#        notice, this list of conditions and the following disclaimer.
#      * 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.
#      * Neither the name of the Gjøvik University College 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 Gjøvik University College ''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 Gjøvik University College 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.
*/
require_once('config.php');
require_once('lib/auth_base.php');
require_once('lib/common_functions.php');
require_once('lib/db_functions.php');
require_once('lib/domain_functions.php');

$config = get_config();

$config['sql_link'] = @mysql_connect( 
	$config['sql_server'],
	$config['sql_username'],
	$config['sql_password']
);
if ( !$config['sql_link'] )
{
	print json_encode( array( 'response' => 'failed', 'cause' => 'error', 'detail' => 'Database connection failed.'));
	exit;
}

token_auth();

//*************************************************************************************	
	switch ( $_SERVER['PATH_INFO'] )
	{
		case "/list":
			// Very simple call: Provide a list of domains registered with kamailio.
			$domains = get_domains();
			if ( $domains == -1 )
				print json_encode( array( 'response' => 'failed', 'cause' => 'error', 'detail' => 'Database error.'));
			else
				print json_encode ( array( 'response' => 'ok', 'list' => $domains ) );
			break;
		case "/get_servers":
			if ( array_key_exists('domain', $_POST))
			{
				$domain = $_POST['domain'];
				if ( !$domain || $domain == "" )
					print json_encode ( array( 'response' => 'invalid', 'cause' => 'parameters') );

				$servers = get_servers( $domain );
				if ( !$servers )
				{
					print json_encode( array( 'response' => 'failed', 'cause' => 'nonexistant', 'detail' => 'Servers lookup failed for domain '. $domain ) );
					break;
				}
				$servers['domain'] = $domain;
				print json_encode ( array ( 'response' => 'ok', 'servers' => $servers ) );
				break;
			}
			print json_encode ( array( 'response' => 'invalid', 'cause' => 'parameters') );
			break;
			
		case "/set_servers":
			if ( 	array_key_exists('domain', $_POST)
				&& array_key_exists('registrar', $_POST)
				&& array_key_exists('r_port', $_POST)
				&& array_key_exists('proxy', $_POST)
				&& array_key_exists('p_port', $_POST)
				&& array_key_exists('prov_url', $_POST))
			{
				$domain = $_POST['domain'];
				$registrar = $_POST['registrar'];
				$r_port = $_POST['r_port'];
				$proxy = $_POST['proxy'];
				$p_port = $_POST['p_port'];
				$prov_url = $_POST['prov_url'];

				if (!($domain && $registrar && $r_port && $proxy && $p_port && $prov_url ))
				{
					print json_encode ( array( 'response' => 'invalid', 'cause' => 'parameters', 'detail' => 'One or more parameters NULL') );
					break;
				}

				if ( ! ( is_numeric( $r_port ) && is_numeric( $p_port ) ) )
				{
					print json_encode ( array( 'response' => 'invalid', 'cause' => 'parameters', 'detail' => 'One of the ports is not numeric.') );
					break;
				}

				if ( ! set_servers ( $domain, $registrar, $r_port, $proxy, $p_port, $prov_url ) )
				{
					print json_encode( array( 'response' => 'failed', 'cause' => 'error', 'detail' => 'Database error.'));
					break;
				}

				$servers = get_servers( $domain );
				$servers['domain'] = $domain;
				print json_encode ( array ( 'response' => 'ok', 'servers' => $servers ) );
				break;
			}
			print json_encode ( array( 'response' => 'invalid', 'cause' => 'parameters') );
			break;


		default:
			print json_encode ( array( 'response' => 'invalid') );
	}
//*************************************************************************************	
mysql_close( $config['sql_link'] );
?>