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<?php
/**
 * Rest endpoint.
 * The API REST endpoint.
 *
 * @package Elgg
 * @subpackage API
 * @author Curverider Ltd <info@elgg.com>
 * @link http://elgg.org/
 */

/**
 *  Start the Elgg engine
 */
require_once("../../engine/start.php");
global $CONFIG;

// Register the error handler
error_reporting(E_ALL);
set_error_handler('__php_api_error_handler');

// Register a default exception handler
set_exception_handler('__php_api_exception_handler');

// Check to see if the api is available
if ((isset($CONFIG->disable_api)) && ($CONFIG->disable_api == true)) {
	throw new SecurityException(elgg_echo('SecurityException:APIAccessDenied'));
}

// Register some default PAM methods, plugins can add their own
register_pam_handler('pam_auth_session_or_hmac'); // Command must either be authenticated by a hmac or the user is already logged in
register_pam_handler('pam_auth_usertoken', 'required'); // Either token present and valid OR method doesn't require one.
register_pam_handler('pam_auth_anonymous_method'); // Support anonymous functions

// Get parameter variables
$method = get_input('method');
$result = null;

// Authenticate session
if (pam_authenticate()) {
	// Authenticated somehow, now execute.
	$token = "";
	$params = get_parameters_for_method($method); // Use $CONFIG->input instead of $_REQUEST since this is called by the pagehandler
	if (isset($params['auth_token'])) {
		$token = $params['auth_token'];
	}

	$result = execute_method($method, $params, $token);
} else {
	throw new SecurityException(elgg_echo('SecurityException:NoAuthMethods'));
}

// Finally output
if (!($result instanceof GenericResult)) {
	throw new APIException(elgg_echo('APIException:ApiResultUnknown'));
}

// Output the result
page_draw($method, elgg_view("api/output", array("result" => $result)));