/** * (non-PHPdoc) * @see common_user_auth_Adapter::authenticate() */ public function authenticate() { $service = new tao_models_classes_oauth_Service(); try { $service->validate($this->request); $ltiLaunchData = taoLti_models_classes_LtiLaunchData::fromRequest($this->request); return new taoLti_models_classes_LtiUser($ltiLaunchData); } catch (common_http_InvalidSignatureException $e) { throw new taoLti_models_classes_LtiException('Invalid LTI signature'); } }