Move lib/ to PSR-4

1 files changed, 161 insertions, 0 deletions

diff --git a/apps/files_sharing/lib/Middleware/SharingCheckMiddleware.php b/apps/files_sharing/lib/Middleware/SharingCheckMiddleware.php
new file mode 100644
index 00000000000..a4a968b37fa
--- /dev/null
+++ b/apps/files_sharing/lib/Middleware/SharingCheckMiddleware.php
@@ -0,0 +1,161 @@
+<?php
+/**
+ * @author Lukas Reschke <lukas@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Roeland Jago Douma <rullzer@owncloud.com>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_Sharing\Middleware;
+
+use OCP\App\IAppManager;
+use OCP\AppFramework\Http\NotFoundResponse;
+use OCP\AppFramework\Middleware;
+use OCP\Files\NotFoundException;
+use OCP\IConfig;
+use OCP\AppFramework\Utility\IControllerMethodReflector;
+use OCA\Files_Sharing\Exceptions\S2SException;
+use OCP\AppFramework\Http\JSONResponse;
+
+/**
+ * Checks whether the "sharing check" is enabled
+ *
+ * @package OCA\Files_Sharing\Middleware
+ */
+class SharingCheckMiddleware extends Middleware {
+
+	/** @var string */
+	protected $appName;
+	/** @var IConfig */
+	protected $config;
+	/** @var IAppManager */
+	protected $appManager;
+	/** @var IControllerMethodReflector */
+	protected $reflector;
+
+	/***
+	 * @param string $appName
+	 * @param IConfig $config
+	 * @param IAppManager $appManager
+	 */
+	public function __construct($appName,
+								IConfig $config,
+								IAppManager $appManager,
+								IControllerMethodReflector $reflector
+								) {
+		$this->appName = $appName;
+		$this->config = $config;
+		$this->appManager = $appManager;
+		$this->reflector = $reflector;
+	}
+
+	/**
+	 * Check if sharing is enabled before the controllers is executed
+	 *
+	 * @param \OCP\AppFramework\Controller $controller
+	 * @param string $methodName
+	 * @throws NotFoundException
+	 */
+	public function beforeController($controller, $methodName) {
+		if(!$this->isSharingEnabled()) {
+			throw new NotFoundException('Sharing is disabled.');
+		}
+
+		if ($controller instanceof \OCA\Files_Sharing\Controllers\ExternalSharesController &&
+			!$this->externalSharesChecks()) {
+			throw new S2SException('Federated sharing not allowed');
+		} else if ($controller instanceof \OCA\Files_Sharing\Controllers\ShareController &&
+			!$this->isLinkSharingEnabled()) {
+			throw new NotFoundException('Link sharing is disabled');
+		}
+	}
+
+	/**
+	 * Return 404 page in case of a not found exception
+	 *
+	 * @param \OCP\AppFramework\Controller $controller
+	 * @param string $methodName
+	 * @param \Exception $exception
+	 * @return NotFoundResponse
+	 * @throws \Exception
+	 */
+	public function afterException($controller, $methodName, \Exception $exception) {
+		if(is_a($exception, '\OCP\Files\NotFoundException')) {
+			return new NotFoundResponse();
+		}
+
+		if (is_a($exception, '\OCA\Files_Sharing\Exceptions\S2SException')) {
+			return new JSONResponse($exception->getMessage(), 405);
+		}
+
+		throw $exception;
+	}
+
+	/**
+	 * Checks for externalshares controller
+	 * @return bool
+	 */
+	private function externalSharesChecks() {
+
+		if (!$this->reflector->hasAnnotation('NoIncomingFederatedSharingRequired') &&
+			$this->config->getAppValue('files_sharing', 'incoming_server2server_share_enabled', 'yes') !== 'yes') {
+			return false;
+		}
+
+		if (!$this->reflector->hasAnnotation('NoOutgoingFederatedSharingRequired') &&
+		    $this->config->getAppValue('files_sharing', 'outgoing_server2server_share_enabled', 'yes') !== 'yes') {
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Check whether sharing is enabled
+	 * @return bool
+	 */
+	private function isSharingEnabled() {
+		// FIXME: This check is done here since the route is globally defined and not inside the files_sharing app
+		// Check whether the sharing application is enabled
+		if(!$this->appManager->isEnabledForUser($this->appName)) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Check if link sharing is allowed
+	 * @return bool
+	 */
+	private function isLinkSharingEnabled() {
+		// Check if the shareAPI is enabled
+		if ($this->config->getAppValue('core', 'shareapi_enabled', 'yes') !== 'yes') {
+			return false;
+		}
+
+		// Check whether public sharing is enabled
+		if($this->config->getAppValue('core', 'shareapi_allow_links', 'yes') !== 'yes') {
+			return false;
+		}
+
+		return true;
+	}
+
+}