/**
* Adds a signature to the request
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @param $authorizationHeader Move the signature parameters into the Authorization header of the request
*/
public function sign(common_http_Request $request, common_http_Credentials $credentials, $authorizationHeader = false)
{
if (!$credentials instanceof tao_models_classes_oauth_Credentials) {
throw new tao_models_classes_oauth_Exception('Invalid credentals: ' . gettype($credentials));
}
$oauthRequest = $this->getOauthRequest($request);
$dataStore = new tao_models_classes_oauth_DataStore();
$consumer = $dataStore->getOauthConsumer($credentials);
$token = $dataStore->new_request_token($consumer);
$allInitialParameters = array();
$allInitialParameters = array_merge($allInitialParameters, $request->getParams());
$allInitialParameters = array_merge($allInitialParameters, $request->getHeaders());
//oauth_body_hash is used for the signing computation
if ($authorizationHeader) {
$oauth_body_hash = base64_encode(sha1($request->getBody(), true));
//the signature should be ciomputed from encoded versions
$allInitialParameters = array_merge($allInitialParameters, array("oauth_body_hash" => $oauth_body_hash));
}
//$authorizationHeader = self::buildAuthorizationHeader($signatureParameters);
$signedRequest = OAuthRequest::from_consumer_and_token($consumer, $token, $oauthRequest->get_normalized_http_method(), $oauthRequest->getUrl(), $allInitialParameters);
$signature_method = new OAuthSignatureMethod_HMAC_SHA1();
//common_logger::d('Base string: '.$signedRequest->get_signature_base_string());
$signedRequest->sign_request($signature_method, $consumer, $token);
common_logger::d('Base string from TAO/Joel: ' . $signedRequest->get_signature_base_string());
if ($authorizationHeader) {
$combinedParameters = $signedRequest->get_parameters();
$signatureParameters = array_diff_assoc($combinedParameters, $allInitialParameters);
$signatureParameters["oauth_body_hash"] = base64_encode(sha1($request->getBody(), true));
$signatureHeaders = array("Authorization" => self::buildAuthorizationHeader($signatureParameters));
$signedRequest = new common_http_Request($signedRequest->getUrl(), $signedRequest->get_normalized_http_method(), $request->getParams(), array_merge($signatureHeaders, $request->getHeaders()), $request->getBody());
} else {
$signedRequest = new common_http_Request($signedRequest->getUrl(), $signedRequest->get_normalized_http_method(), $signedRequest->get_parameters(), $request->getHeaders(), $request->getBody());
}
return $signedRequest;
}
/**
* Get common user uri associated to Lti user id
*
* @param $id string Identifier of LTI user
* @param $key string Oauth LTI consumer key
* @return array|null
* @throws \common_Exception
* @throws \tao_models_classes_oauth_Exception
*/
public function getUserId($id, $key)
{
$class = new \core_kernel_classes_Class(CLASS_LTI_USER);
$dataStore = new \tao_models_classes_oauth_DataStore();
try {
/** @var \core_kernel_classes_Resource $consumerResource */
$consumerResource = $dataStore->findOauthConsumerResource($key);
} catch (\tao_models_classes_oauth_Exception $e) {
throw new \common_exception_NotFound($e->getMessage());
}
$instances = $class->searchInstances(array(PROPERTY_USER_LTIKEY => $id, PROPERTY_USER_LTICONSUMER => $consumerResource), array('like' => false));
if (count($instances) > 1) {
throw new \common_Exception('Multiple user accounts found for user key: ' . $id);
}
/** @var \core_kernel_classes_Resource $ltiUser */
$ltiUser = count($instances) == 1 ? current($instances) : null;
if (!$ltiUser) {
return null;
}
return array('id' => $ltiUser->getUri());
}
public function deliveriesByProctor()
{
$deliveryData = array();
if (\common_ext_ExtensionsManager::singleton()->isInstalled('ltiDeliveryProvider')) {
/** @var DeliveryService $service */
$service = $this->getServiceManager()->get(DeliveryService::CONFIG_ID);
$deliveries = $service->getAccessibleDeliveries();
if (!empty($deliveries)) {
try {
$dataStore = new \tao_models_classes_oauth_DataStore();
$test_consumer = $dataStore->lookup_consumer('proctoring_key');
} catch (\tao_models_classes_oauth_Exception $e) {
$secret = uniqid('proctoring_');
\taoLti_models_classes_ConsumerService::singleton()->getRootClass()->createInstanceWithProperties(array(RDFS_LABEL => 'proctoring', PROPERTY_OAUTH_KEY => 'proctoring_key', PROPERTY_OAUTH_SECRET => $secret));
$test_consumer = new \OAuthConsumer('proctoring_key', $secret);
}
$session = \common_session_SessionManager::getSession();
$ltiData = array('lti_message_type' => 'basic-lti-launch-request', 'lti_version' => 'LTI-1p0', 'resource_link_id' => rand(0, 9999999), 'resource_link_title' => 'Launch Title', 'resource_link_label' => 'Launch label', 'context_title' => 'Launch Title', 'context_label' => 'Launch label', 'user_id' => $session->getUserUri(), 'roles' => 'Learner', 'lis_person_name_full' => $session->getUserLabel(), 'tool_consumer_info_product_family_code' => PRODUCT_NAME, 'tool_consumer_info_version' => TAO_VERSION, 'custom_skip_thankyou' => 'true', 'launch_presentation_return_url' => _url('logout', 'Main', 'tao'));
$hmac_method = new \OAuthSignatureMethod_HMAC_SHA1();
$test_token = new \OAuthToken($test_consumer, '');
foreach ($deliveries as $delivery) {
$launchUrl = LTIDeliveryTool::singleton()->getLaunchUrl(array('delivery' => $delivery->getUri()));
$acc_req = \OAuthRequest::from_consumer_and_token($test_consumer, $test_token, 'GET', $launchUrl, $ltiData);
$acc_req->sign_request($hmac_method, $test_consumer, $test_token);
$deliveryData[] = array('id' => $delivery->getUri(), 'label' => $delivery->getLabel(), 'url' => $acc_req->to_url(), 'text' => __('Test'));
}
}
}
$this->setData('title', __('Available Deliveries'));
if (\tao_helpers_Request::isAjax()) {
$this->returnJson(array('list' => $deliveryData));
} else {
try {
$testCenter = $this->getCurrentTestCenter();
$this->composeView('diagnostic-deliveries', array('list' => $deliveryData), array(BreadcrumbsHelper::testCenters(), BreadcrumbsHelper::testCenter($testCenter, TestCenterHelper::getTestCenters()), BreadcrumbsHelper::diagnostics($testCenter, array(BreadcrumbsHelper::deliveries($testCenter))), BreadcrumbsHelper::deliveriesByProctor($testCenter)));
} catch (\common_Exception $e) {
$this->composeView('diagnostic-deliveries', array('list' => $deliveryData), array(BreadcrumbsHelper::testCenters()));
}
}
}
/**
* Returns the LTI Consumer resource associated to this lti session
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @return core_kernel_classes_Resource resource of LtiConsumer
* @throws tao_models_classes_oauth_Exception thrown if no Consumer found for key
*/
public function getLtiConsumerResource($launchData)
{
$dataStore = new tao_models_classes_oauth_DataStore();
return $dataStore->findOauthConsumerResource($launchData->getOauthKey());
}
