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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Viktar Dubiniuk <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2018, ownCloud GmbH  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license AGPL-3.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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\FederatedFileSharing\Middleware;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\FederatedFileSharing\AddressHandler;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\FederatedFileSharing\FederatedShareProvider;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\FederatedFileSharing\Ocm\Exception\BadRequestException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\FederatedFileSharing\Ocm\Exception\ForbiddenException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\FederatedFileSharing\Ocm\Exception\NotImplementedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\App\IAppManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\ILogger;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IUserManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\Share;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\Share\IShare;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class OcmMiddleware  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package OCA\FederatedFileSharing\Controller\Middleware  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class OcmMiddleware { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @var FederatedShareProvider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $federatedShareProvider;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @var IAppManager  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $appManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @var IUserManager  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $userManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @var AddressHandler  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $addressHandler;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @var ILogger  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $logger;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param FederatedShareProvider $federatedShareProvider  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param IAppManager $appManager  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param IUserManager $userManager  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param AddressHandler $addressHandler  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param ILogger $logger  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function __construct(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                								FederatedShareProvider $federatedShareProvider,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                								IAppManager $appManager,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                								IUserManager $userManager,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                								AddressHandler $addressHandler,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                								ILogger $logger  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->federatedShareProvider = $federatedShareProvider;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->appManager = $appManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->userManager = $userManager;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->addressHandler = $addressHandler;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$this->logger = $logger;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Check if value an array has any null item  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string[] $params  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws BadRequestException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function assertNotNull($params) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (\is_array($params)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$nullKeys = \array_keys(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				\array_filter(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					$params,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					function ($b) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                						return $b === null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			if (\count($nullKeys) > 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$nullKeysAsString = \implode(',', $nullKeys); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				throw new BadRequestException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                					"Required parameters are missing: $nullKeysAsString"  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Get share by id, validate its type and token  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param int $id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $sharedSecret  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return IShare  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws BadRequestException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @throws ForbiddenException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function getValidShare($id, $sharedSecret) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$share = $this->federatedShareProvider->getShareById($id);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		} catch (Share\Exceptions\ShareNotFound $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			throw new BadRequestException("Share with id {$id} does not exist"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ($share->getShareType() !== FederatedShareProvider::SHARE_TYPE_REMOTE) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                     | 
                
                 | 
                			throw new BadRequestException("Share with id {$id} does not exist"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                		if ($share->getToken() !== $sharedSecret) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                			throw new ForbiddenException("The secret does not match"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                		return $share;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                	 * Make sure that incoming shares are enabled  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                	 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                	 * @throws NotImplementedException  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                	public function assertIncomingSharingEnabled() { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                		if (!$this->appManager->isEnabledForUser('files_sharing') | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                			|| !$this->federatedShareProvider->isIncomingServer2serverShareEnabled()  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                		) { | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                			throw new NotImplementedException();  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                	 * Make sure that outgoing shares are enabled  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                	 * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                	 * @throws NotImplementedException  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                	public function assertOutgoingSharingEnabled() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                		if (!$this->appManager->isEnabledForUser('files_sharing') | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                			|| !$this->federatedShareProvider->isOutgoingServer2serverShareEnabled()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                		) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                			throw new NotImplementedException();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                 |