*/ interface ClientCredentialsInterface extends ClientInterface { /** * Make sure that the client credentials is valid. * * @param $client_id * Client identifier to be check with. * @param $client_secret * (optional) If a secret is required, check that they've given the right one. * * @return * TRUE if the client credentials are valid, and MUST return FALSE if it isn't. * @endcode * * @see http://tools.ietf.org/html/rfc6749#section-3.1 * * @ingroup oauth2_section_3 */ public function checkClientCredentials($client_id, $client_secret = null); }