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<?php |
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/** |
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* @author Christoph Wurst <[email protected]> |
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* @author Lukas Reschke <[email protected]> |
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* @author Lukas Reschke <[email protected]> |
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* @author Thomas Müller <[email protected]> |
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* |
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* ownCloud - Mail |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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namespace OCA\Mail\Controller; |
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use Exception; |
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use OCP\IRequest; |
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use OCP\ISession; |
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use OCP\IURLGenerator; |
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use OCP\AppFramework\Controller; |
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use OCP\AppFramework\Http\TemplateResponse; |
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use OCA\Mail\Http\ProxyDownloadResponse; |
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class ProxyController extends Controller { |
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/** |
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* @var \OCP\IURLGenerator |
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*/ |
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private $urlGenerator; |
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/** |
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* @var \OCP\ISession |
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*/ |
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private $session; |
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/** |
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* @var string |
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*/ |
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private $referrer; |
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/** |
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* @var string |
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*/ |
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private $hostname; |
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/** |
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* @param string $appName |
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* @param \OCP\IRequest $request |
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* @param IURLGenerator $urlGenerator |
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* @param \OCP\ISession $session |
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*/ |
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public function __construct($appName, IRequest $request, |
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IURLGenerator $urlGenerator, ISession $session, $referrer, $hostname) { |
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parent::__construct($appName, $request); |
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$this->urlGenerator = $urlGenerator; |
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$this->session = $session; |
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$this->referrer = $referrer; |
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$this->hostname = $hostname; |
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} |
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/** |
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* @NoAdminRequired |
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* @NoCSRFRequired |
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* |
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* @param string $src |
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* |
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* @throws \Exception If the URL is not valid. |
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* @return TemplateResponse |
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*/ |
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public function redirect($src) { |
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$authorizedRedirect = false; |
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if (strpos($src, 'http://') !== 0 && strpos($src, 'https://') !== 0) { |
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throw new Exception('URL is not valid.', 1); |
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} |
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// If the request has a referrer from this domain redirect the user without interaction |
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// this is there to prevent an open redirector. |
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// Since we can't prevent the referrer from being added with a HTTP only header we rely on an |
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// additional JS file here. |
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if (parse_url($this->referrer, PHP_URL_HOST) === $this->hostname) { |
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$authorizedRedirect = true; |
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} |
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$params = [ |
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'authorizedRedirect' => $authorizedRedirect, |
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'url' => $src, |
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'urlHost' => parse_url($src, PHP_URL_HOST), |
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'mailURL' => $this->urlGenerator->linkToRoute('mail.page.index'), |
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]; |
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return new TemplateResponse($this->appName, 'redirect', $params, 'guest'); |
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} |
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/** |
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* @NoAdminRequired |
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* @NoCSRFRequired |
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* |
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* @param string $src |
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* |
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* TODO: Cache the proxied content to prevent unnecessary requests from the oC server |
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* The caching should also already happen in a cronjob so that the sender of the |
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* mail does not know whether the mail has been opened. |
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* |
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* @return ProxyDownloadResponse |
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*/ |
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public function proxy($src) { |
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// close the session to allow parallel downloads |
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$this->session->close(); |
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$content = $this->getUrlContent($src); |
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return new ProxyDownloadResponse($content, $src, 'application/octet-stream'); |
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} |
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/** |
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* Version hack for \OCP\IHelper |
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* |
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* @todo remove version-hack once core 8.1+ is supported |
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* |
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* @param type $src |
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* @return type |
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*/ |
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private function getUrlContent($src) { |
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$ocVersion = \OC::$server->getConfig()->getSystemValue('version', '0.0.0'); |
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if (version_compare($ocVersion, '8.2.0', '<')) { |
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return \OC::$server->getHTTPClientService()->newClient()->get($src); |
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} else { |
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return \OC::$server->getHelper()->getUrlContent($src); |
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} |
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} |
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} |
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owncloud /
mail
