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- <?php
- /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Bjoern Schiessle <bjoern@schiessle.org>
- * @author Björn Schießle <bjoern@schiessle.org>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Michael Gapczynski <GapczynskiM@gmail.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Vincent Petry <vincent@nextcloud.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\ShareBackend;
- use OCA\FederatedFileSharing\FederatedShareProvider;
- use OCP\Share\IShare;
- class File implements \OCP\Share_Backend_File_Dependent {
- public const FORMAT_SHARED_STORAGE = 0;
- public const FORMAT_GET_FOLDER_CONTENTS = 1;
- public const FORMAT_FILE_APP_ROOT = 2;
- public const FORMAT_OPENDIR = 3;
- public const FORMAT_GET_ALL = 4;
- public const FORMAT_PERMISSIONS = 5;
- public const FORMAT_TARGET_NAMES = 6;
- private $path;
- /** @var FederatedShareProvider */
- private $federatedShareProvider;
- public function __construct(FederatedShareProvider $federatedShareProvider = null) {
- if ($federatedShareProvider) {
- $this->federatedShareProvider = $federatedShareProvider;
- } else {
- $this->federatedShareProvider = \OC::$server->query(FederatedShareProvider::class);
- }
- }
- public function isValidSource($itemSource, $uidOwner) {
- try {
- $path = \OC\Files\Filesystem::getPath($itemSource);
- // FIXME: attributes should not be set here,
- // keeping this pattern for now to avoid unexpected
- // regressions
- $this->path = \OC\Files\Filesystem::normalizePath(basename($path));
- return true;
- } catch (\OCP\Files\NotFoundException $e) {
- return false;
- }
- }
- public function getFilePath($itemSource, $uidOwner) {
- if (isset($this->path)) {
- $path = $this->path;
- $this->path = null;
- return $path;
- } else {
- try {
- $path = \OC\Files\Filesystem::getPath($itemSource);
- return $path;
- } catch (\OCP\Files\NotFoundException $e) {
- return false;
- }
- }
- }
- /**
- * create unique target
- *
- * @param string $itemSource
- * @param string $shareWith
- * @param array $exclude (optional)
- * @return string
- */
- public function generateTarget($itemSource, $shareWith, $exclude = null) {
- $shareFolder = \OCA\Files_Sharing\Helper::getShareFolder();
- $target = \OC\Files\Filesystem::normalizePath($shareFolder . '/' . basename($itemSource));
- // for group shares we return the target right away
- if ($shareWith === false) {
- return $target;
- }
- \OC\Files\Filesystem::initMountPoints($shareWith);
- $view = new \OC\Files\View('/' . $shareWith . '/files');
- if (!$view->is_dir($shareFolder)) {
- $dir = '';
- $subdirs = explode('/', $shareFolder);
- foreach ($subdirs as $subdir) {
- $dir = $dir . '/' . $subdir;
- if (!$view->is_dir($dir)) {
- $view->mkdir($dir);
- }
- }
- }
- $excludeList = is_array($exclude) ? $exclude : [];
- return \OCA\Files_Sharing\Helper::generateUniqueTarget($target, $excludeList, $view);
- }
- public function formatItems($items, $format, $parameters = null) {
- if ($format === self::FORMAT_SHARED_STORAGE) {
- // Only 1 item should come through for this format call
- $item = array_shift($items);
- return [
- 'parent' => $item['parent'],
- 'path' => $item['path'],
- 'storage' => $item['storage'],
- 'permissions' => $item['permissions'],
- 'uid_owner' => $item['uid_owner'],
- ];
- } elseif ($format === self::FORMAT_GET_FOLDER_CONTENTS) {
- $files = [];
- foreach ($items as $item) {
- $file = [];
- $file['fileid'] = $item['file_source'];
- $file['storage'] = $item['storage'];
- $file['path'] = $item['file_target'];
- $file['parent'] = $item['file_parent'];
- $file['name'] = basename($item['file_target']);
- $file['mimetype'] = $item['mimetype'];
- $file['mimepart'] = $item['mimepart'];
- $file['mtime'] = $item['mtime'];
- $file['encrypted'] = $item['encrypted'];
- $file['etag'] = $item['etag'];
- $file['uid_owner'] = $item['uid_owner'];
- $file['displayname_owner'] = $item['displayname_owner'];
- $storage = \OC\Files\Filesystem::getStorage('/');
- $cache = $storage->getCache();
- $file['size'] = $item['size'];
- $files[] = $file;
- }
- return $files;
- } elseif ($format === self::FORMAT_OPENDIR) {
- $files = [];
- foreach ($items as $item) {
- $files[] = basename($item['file_target']);
- }
- return $files;
- } elseif ($format === self::FORMAT_GET_ALL) {
- $ids = [];
- foreach ($items as $item) {
- $ids[] = $item['file_source'];
- }
- return $ids;
- } elseif ($format === self::FORMAT_PERMISSIONS) {
- $filePermissions = [];
- foreach ($items as $item) {
- $filePermissions[$item['file_source']] = $item['permissions'];
- }
- return $filePermissions;
- } elseif ($format === self::FORMAT_TARGET_NAMES) {
- $targets = [];
- foreach ($items as $item) {
- $targets[] = $item['file_target'];
- }
- return $targets;
- }
- return [];
- }
- /**
- * check if server2server share is enabled
- *
- * @param int $shareType
- * @return boolean
- */
- public function isShareTypeAllowed($shareType) {
- if ($shareType === IShare::TYPE_REMOTE) {
- return $this->federatedShareProvider->isOutgoingServer2serverShareEnabled();
- }
- if ($shareType === IShare::TYPE_REMOTE_GROUP) {
- return $this->federatedShareProvider->isOutgoingServer2serverGroupShareEnabled();
- }
- return true;
- }
- /**
- * resolve reshares to return the correct source item
- * @param array $source
- * @return array source item
- */
- protected static function resolveReshares($source) {
- if (isset($source['parent'])) {
- $parent = $source['parent'];
- while (isset($parent)) {
- $qb = \OC::$server->getDatabaseConnection()->getQueryBuilder();
- $qb->select('parent', 'uid_owner')
- ->from('share')
- ->where(
- $qb->expr()->eq('id', $qb->createNamedParameter($parent))
- );
- $result = $qb->execute();
- $item = $result->fetch();
- $result->closeCursor();
- if (isset($item['parent'])) {
- $parent = $item['parent'];
- } else {
- $fileOwner = $item['uid_owner'];
- break;
- }
- }
- } else {
- $fileOwner = $source['uid_owner'];
- }
- if (isset($fileOwner)) {
- $source['fileOwner'] = $fileOwner;
- } else {
- \OC::$server->getLogger()->error('No owner found for reshare', ['app' => 'files_sharing']);
- }
- return $source;
- }
- /**
- * @param string $target
- * @param array $share
- * @return array|false source item
- */
- public static function getSource($target, $share) {
- if ($share['item_type'] === 'folder' && $target !== '') {
- // note: in case of ext storage mount points the path might be empty
- // which would cause a leading slash to appear
- $share['path'] = ltrim($share['path'] . '/' . $target, '/');
- }
- return self::resolveReshares($share);
- }
- }
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