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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Olivier Paroz <github@oparoz.com>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @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\External;
-
- use OC\ForbiddenException;
- use OCP\Files\NotFoundException;
- use OCP\Files\StorageInvalidException;
- use OCP\Files\StorageNotAvailableException;
-
- class Scanner extends \OC\Files\Cache\Scanner {
- /** @var \OCA\Files_Sharing\External\Storage */
- protected $storage;
-
- /** {@inheritDoc} */
- public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $lock = true) {
- if (!$this->storage->remoteIsOwnCloud()) {
- return parent::scan($path, $recursive, $recursive, $lock);
- }
-
- $this->scanAll();
- }
-
- /**
- * Scan a single file and store it in the cache.
- * If an exception happened while accessing the external storage,
- * the storage will be checked for availability and removed
- * if it is not available any more.
- *
- * @param string $file file to scan
- * @param int $reuseExisting
- * @param int $parentId
- * @param array | null $cacheData existing data in the cache for the file to be scanned
- * @param bool $lock set to false to disable getting an additional read lock during scanning
- * @return array an array of metadata of the scanned file
- */
- public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true, $data = null) {
- try {
- return parent::scanFile($file, $reuseExisting);
- } catch (ForbiddenException $e) {
- $this->storage->checkStorageAvailability();
- } catch (NotFoundException $e) {
- // if the storage isn't found, the call to
- // checkStorageAvailable() will verify it and remove it
- // if appropriate
- $this->storage->checkStorageAvailability();
- } catch (StorageInvalidException $e) {
- $this->storage->checkStorageAvailability();
- } catch (StorageNotAvailableException $e) {
- $this->storage->checkStorageAvailability();
- }
- }
-
- /**
- * Checks the remote share for changes.
- * If changes are available, scan them and update
- * the cache.
- * @throws NotFoundException
- * @throws StorageInvalidException
- * @throws \Exception
- */
- public function scanAll() {
- try {
- $data = $this->storage->getShareInfo();
- } catch (\Exception $e) {
- $this->storage->checkStorageAvailability();
- throw new \Exception(
- 'Error while scanning remote share: "' .
- $this->storage->getRemote() . '" ' .
- $e->getMessage()
- );
- }
- if ($data['status'] === 'success') {
- $this->addResult($data['data'], '');
- } else {
- throw new \Exception(
- 'Error while scanning remote share: "' .
- $this->storage->getRemote() . '"'
- );
- }
- }
-
- /**
- * @param array $data
- * @param string $path
- */
- private function addResult($data, $path) {
- $id = $this->cache->put($path, $data);
- if (isset($data['children'])) {
- $children = [];
- foreach ($data['children'] as $child) {
- $children[$child['name']] = true;
- $this->addResult($child, ltrim($path . '/' . $child['name'], '/'));
- }
-
- $existingCache = $this->cache->getFolderContentsById($id);
- foreach ($existingCache as $existingChild) {
- // if an existing child is not in the new data, remove it
- if (!isset($children[$existingChild['name']])) {
- $this->cache->remove(ltrim($path . '/' . $existingChild['name'], '/'));
- }
- }
- }
- }
- }
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