public function invalidateApplicationResources(array $uris, SecurityToken $token) { foreach ($uris as $uri) { $request = new RemoteContentRequest($uri); $this->cache->invalidate($request->toHash()); // GET $request = new RemoteContentRequest($uri); $request->createRemoteContentRequestWithUri($uri); $this->cache->invalidate($request->toHash()); // GET & SIGNED $request = new RemoteContentRequest($uri); $request->setAuthType(RemoteContentRequest::$AUTH_SIGNED); $request->setNotSignedUri($uri); $this->cache->invalidate($request->toHash()); } if (Doctrine::getTable('SnsConfig')->get('is_use_outer_shindig', false) && Doctrine::getTable('SnsConfig')->get('is_relay_invalidation_notice', true)) { require_once 'OAuth.php'; $shindigUrl = Doctrine::getTable('SnsConfig')->get('shindig_url'); if (substr($shindigUrl, -1) !== '/') { $shindigUrl .= '/'; } $invalidateUrl = $shindigUrl . 'gadgets/api/rest/cache'; $key = Doctrine::getTable('SnsConfig')->get('shindig_backend_key'); $secret = Doctrine::getTable('SnsConfig')->get('shindig_backend_secret'); $consumer = new OAuthConsumer($key, $secret); $oauthRequest = OAuthRequest::from_consumer_and_token($consumer, null, 'POST', $invalidateUrl); $oauthRequest->set_parameter('xoauth_requestor_id', 1); $oauthRequest->sign_request(new OAuthSignatureMethod_HMAC_SHA1(), $consumer, null); $request = new RemoteContentRequest($invalidateUrl . '?xoauth_requestor_id=1'); $request->setMethod('POST'); $request->setContentType('application/json'); $request->setPostBody(json_encode(array('invalidationKeys' => $uris))); $request->setHeaders($oauthRequest->to_header()); $request->getOptions()->ignoreCache = true; $remoteContent = Shindig_Config::get('remote_content'); $fetcher = new $remoteContent(); $fetcher->fetch($request); } }
/** * Builds a request to retrieve the actual content. * * @param GadgetContext $context The rendering context. * @param MakeRequestOptions $params Options for crafting the request. * @param SecurityTokenDecoder $signer A signer needed for signed requests. * @return RemoteContentRequest An initialized request object. */ public function buildRequest(GadgetContext $context, MakeRequestOptions $params, SecurityTokenDecoder $signer = null) { // Check the protocol requested - curl doesn't really support file:// // requests but the 'error' should be handled properly $protocolSplit = explode('://', $params->getHref(), 2); if (count($protocolSplit) < 2) { throw new Exception("Invalid protocol specified"); } $protocol = strtoupper($protocolSplit[0]); if ($protocol != "HTTP" && $protocol != "HTTPS") { throw new Exception("Invalid protocol specified in url: " . htmlentities($protocol)); } $method = $params->getHttpMethod(); if ($method == 'POST' || $method == 'PUT') { // even if postData is an empty string, it will still post // (since RemoteContentRquest checks if its false) // so the request to POST is still honored $request = new RemoteContentRequest($params->getHref(), null, $params->getRequestBody()); } else { if ($method == 'DELETE' || $method == 'GET' || $method == 'HEAD') { $request = new RemoteContentRequest($params->getHref()); } else { throw new Exception("Invalid HTTP method."); } } $request->setMethod($method); if ($signer) { switch ($params->getAuthz()) { case 'SIGNED': $request->setAuthType(RemoteContentRequest::$AUTH_SIGNED); break; case 'OAUTH': $request->setAuthType(RemoteContentRequest::$AUTH_OAUTH); $request->setOAuthRequestParams($params->getOAuthRequestParameters()); break; } $st = $params->getSecurityTokenString(); if ($st === false) { throw new Exception("A security token is required for signed requests"); } $token = $context->validateToken($st, $signer); $request->setToken($token); } // Strip invalid request headers. This limits the utility of the // MakeRequest class a little bit, but ensures that none of the invalid // headers are present in any request going through this class. $headers = $params->getRequestHeadersArray(); if ($headers !== false) { $headers = $this->stripInvalidArrayKeys($headers, MakeRequest::$BAD_REQUEST_HEADERS); $params->setRequestHeaders($headers); } // The request expects headers to be stored as a normal header text blob. // ex: Content-Type: application/atom+xml // Accept-Language: en-us $formattedHeaders = $params->getFormattedRequestHeaders(); if ($formattedHeaders !== false) { $request->setHeaders($formattedHeaders); } return $request; }
/** * Peforms the actual http fetching of the data-pipelining requests, all social requests * are made to $_SERVER['HTTP_HOST'] (the virtual host name of this server) / (optional) web_prefix / social / rpc, and * the httpRequest's are made to $_SERVER['HTTP_HOST'] (the virtual host name of this server) / (optional) web_prefix / gadgets / makeRequest * both request types use the current security token ($_GET['st']) when performing the requests so they happen in the correct context * * @param array $requests * @return array response */ private static function performRequests($requests, $context) { $jsonRequests = array(); $httpRequests = array(); $decodedResponse = array(); // Using the same gadget security token for all social & http requests so everything happens in the right context if (!isset($_GET['st'])) { throw new ExpressionException("No security token set, required for data-pipeling"); } $securityToken = $_GET['st']; foreach ($requests as $request) { switch ($request['type']) { case 'os:DataRequest': // Add to the social request batch $id = $request['key']; $method = $request['method']; // remove our internal fields so we can use the remainder as params unset($request['key']); unset($request['method']); unset($request['type']); if (isset($request['fields'])) { $request['fields'] = explode(',', $request['fields']); } $jsonRequests[] = array('method' => $method, 'id' => $id, 'params' => $request); break; case 'os:HttpRequest': $id = $request['key']; $url = $request['href']; $format = isset($request['format']) ? $request['format'] : 'json'; unset($request['key']); unset($request['type']); unset($request['href']); $httpRequests[$url] = array('id' => $id, 'url' => $url, 'format' => $format, 'queryStr' => implode('&', $request)); break; } } if (count($jsonRequests)) { // perform social api requests $request = new RemoteContentRequest('http://' . $_SERVER['HTTP_HOST'] . Config::get('web_prefix') . '/rpc?st=' . urlencode($securityToken) . '&format=json', "Content-Type: application/json\n", json_encode($jsonRequests)); $request->setMethod('POST'); $remoteFetcherClass = Config::get('remote_content_fetcher'); $remoteFetcher = new $remoteFetcherClass(); $basicRemoteContent = new BasicRemoteContent($remoteFetcher); $response = $basicRemoteContent->fetch($request); $decodedResponse = json_decode($response->getResponseContent(), true); } if (count($httpRequests)) { $requestQueue = array(); foreach ($httpRequests as $request) { $req = new RemoteContentRequest($_SERVER['HTTP_HOST'] . Config::get('web_prefix') . '/gadgets/makeRequest?url=' . urlencode($request['url']) . '&st=' . urlencode($securityToken) . (!empty($request['queryStr']) ? '&' . $request['queryStr'] : '')); $req->getOptions()->ignoreCache = $context->getIgnoreCache(); $req->setNotSignedUri($request['url']); $requestQueue[] = $req; } $basicRemoteContent = new BasicRemoteContent(); $resps = $basicRemoteContent->multiFetch($requestQueue); foreach ($resps as $response) { //FIXME: this isn't completely correct yet since this picks up the status code and headers // as they are returned by the makeRequest handler and not the ones from the original request $url = $response->getNotSignedUrl(); $id = $httpRequests[$url]['id']; // strip out the UNPARSEABLE_CRUFT (see makeRequestHandler.php) on assigning the body $resp = json_decode(str_replace("throw 1; < don't be evil' >", '', $response->getResponseContent()), true); if (is_array($resp)) { $statusCode = $response->getHttpCode(); $statusCodeMessage = $response->getHttpCodeMsg(); $headers = $response->getHeaders(); if (intval($statusCode) == 200) { $content = $httpRequests[$url]['format'] == 'json' ? json_decode($resp[$url]['body'], true) : $resp[$url]['body']; $toAdd = array('result' => array('content' => $content, 'status' => $statusCode, 'headers' => $headers)); } else { $content = $resp[$url]['body']; $toAdd = array('error' => array('code' => $statusCode, 'message' => $statusCodeMessage, 'result' => array('content' => $content, 'headers' => $headers))); } //$toAdd[$id] = array('id' => $id, 'result' => $httpRequests[$url]['format'] == 'json' ? json_decode($resp[$url]['body'], true) : $resp[$url]['body']); $decodedResponse[] = array('id' => $id, 'result' => $toAdd); } } } return $decodedResponse; }
/** * Renders a 'proxied content' view, for reference see: * http://opensocial-resources.googlecode.com/svn/spec/draft/OpenSocial-Data-Pipelining.xml * * @param Gadget $gadget * @param array $view */ public function renderGadget(Shindig_Gadget $gadget, $view) { $this->setGadget($gadget); if (Shindig_Config::get('P3P') != '') { header("P3P: " . Shindig_Config::get('P3P')); } /* TODO * We should really re-add OAuth fetching support some day, uses these view atributes: * $view['oauthServiceName'], $view['oauthTokenName'], $view['oauthRequestToken'], $view['oauthRequestTokenSecret']; */ $authz = $this->getAuthz($view); $refreshInterval = $this->getRefreshInterval($view); $href = $this->buildHref($view, $authz); if (count($view['dataPipelining'])) { $request = new RemoteContentRequest($href, "Content-type: application/json\n"); $request->setMethod('POST'); $request->getOptions()->ignoreCache = $gadget->gadgetContext->getIgnoreCache(); } else { // no data-pipelining set, use GET and set cache/refresh interval options $request = new RemoteContentRequest($href); $request->setMethod('GET'); $request->setRefreshInterval($refreshInterval); $request->getOptions()->ignoreCache = $gadget->gadgetContext->getIgnoreCache(); } $signingFetcherFactory = $gadgetSigner = false; if ($authz != 'none') { $gadgetSigner = Shindig_Config::get('security_token_signer'); $gadgetSigner = new $gadgetSigner(); $token = $gadget->gadgetContext->extractAndValidateToken($gadgetSigner); $request->setToken($token); $request->setAuthType($authz); $request->getOptions()->ownerSigned = $this->getSignOwner($view); $request->getOptions()->viewerSigned = $this->getSignViewer($view); $signingFetcherFactory = new SigningFetcherFactory(Shindig_Config::get("private_key_file")); } $remoteFetcherClass = Shindig_Config::get('remote_content_fetcher'); $remoteFetcher = new $remoteFetcherClass(); $basicRemoteContent = new BasicRemoteContent($remoteFetcher, $signingFetcherFactory, $gadgetSigner); // Cache POST's as if they were GET's, since we don't want to re-fetch and repost the social data for each view $basicRemoteContent->setCachePostRequest(true); if (($response = $basicRemoteContent->getCachedRequest($request)) == false) { // Don't fetch the data-pipelining social data unless we don't have a cached version of the gadget's content $dataPipeliningResults = DataPipelining::fetch($view['dataPipelining'], $this->context); // spec stats that the proxied content data-pipelinging data is *not* available to templates (to avoid duplicate posting // of the data to the gadget dev's server and once to js space), so we don't assign it to the data context, and just // post the json encoded results to the remote url. $request->setPostBody(json_encode($dataPipeliningResults)); $response = $basicRemoteContent->fetch($request); } if ($response->getHttpCode() != '200') { // an error occured fetching the proxied content's gadget content $content = '<html><body><h1>An error occured fetching the gadget content</h1><p>http error code: ' . $response->getHttpCode() . '</p><p>' . $response->getResponseContent() . '</body></html>'; } else { // fetched ok, build the response document and output it $content = $response->getResponseContent(); $content = $this->parseTemplates($content); $content = $this->rewriteContent($content); $content = $this->addTemplates($content); } echo $content; }