Put AJAX response functions in core
parent
4e06733ffb
commit
0430e6ba28
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@ -2535,6 +2535,91 @@ class H5PCore {
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return TRUE;
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}
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/**
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* Makes it easier to print response when AJAX request succeeds.
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*
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* @param mixed $data
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* @since 1.6.0
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*/
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public static function ajaxSuccess($data = NULL) {
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$response = array(
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'success' => TRUE
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);
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if ($message !== NULL) {
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$response['data'] = $data;
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}
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self::printJson($response);
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}
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/**
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* Makes it easier to print response when AJAX request fails.
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* Will exit after printing error.
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*
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* @param string $message
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* @since 1.6.0
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*/
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public static function ajaxError($message = NULL) {
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$response = array(
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'success' => FALSE
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);
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if ($message !== NULL) {
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$response['message'] = $message;
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}
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self::printJson($response);
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}
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/**
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* Print JSON headers with UTF-8 charset and json encode response data.
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* Makes it easier to respond using JSON.
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*
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* @param mixed $data
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*/
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private static function printJson($data) {
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header('Cache-Control: no-cache');
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header('Content-type: application/json; charset=utf-8');
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print json_encode($data);
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}
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/**
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* Get a new H5P security token for the given action.
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*
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* @param string $action
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* @return string token
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*/
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public static function createToken($action) {
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if (!isset($_SESSION['h5p_token'])) {
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// Create an unique key which is used to create action tokens for this session.
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$_SESSION['h5p_token'] = uniqid();
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}
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// Timefactor
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$time_factor = self::getTimeFactor();
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// Create and return token
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return substr(hash('md5', $action . $time_factor . $_SESSION['h5p_token']), -16, 13);
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}
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/**
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* Create a time based number which is unique for each 12 hour.
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* @return int
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*/
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private static function getTimeFactor() {
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return ceil(time() / (86400 / 2));
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}
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/**
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* Verify if the given token is valid for the given action.
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*
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* @param string $action
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* @param string $token
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* @return boolean valid token
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*/
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public static function validToken($action, $token) {
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$time_factor = self::getTimeFactor();
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return $token === substr(hash('md5', $action . $time_factor . $_SESSION['h5p_token']), -16, 13) || // Under 12 hours
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$token === substr(hash('md5', $action . ($time_factor - 1) . $_SESSION['h5p_token']), -16, 13); // Between 12-24 hours
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}
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}
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/**
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