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+<?php
+/**
+ * @author Arthur Schiwon <blizzz@owncloud.com>
+ * @author Bart Visscher <bartv@thisnet.nl>
+ * @author Christopher Schäpers <kondou@ts.unde.re>
+ * @author Florin Peter <github@florin-peter.de>
+ * @author Georg Ehrke <georg@owncloud.com>
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Jörn Friedrich Dreyer <jfd@butonic.de>
+ * @author Lukas Reschke <lukas@owncloud.com>
+ * @author Michael Gapczynski <GapczynskiM@gmail.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ * @author Roeland Jago Douma <rullzer@owncloud.com>
+ * @author Sam Tuke <mail@samtuke.com>
+ * @author Stephan Peijnik <speijnik@anexia-it.com>
+ * @author Vincent Petry <pvince81@owncloud.com>
+ *
+ * @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/>
+ *
+ */
+
+/**
+ * Class for abstraction of filesystem functions
+ * This class won't call any filesystem functions for itself but will pass them to the correct OC_Filestorage object
+ * this class should also handle all the file permission related stuff
+ *
+ * Hooks provided:
+ * read(path)
+ * write(path, &run)
+ * post_write(path)
+ * create(path, &run) (when a file is created, both create and write will be emitted in that order)
+ * post_create(path)
+ * delete(path, &run)
+ * post_delete(path)
+ * rename(oldpath,newpath, &run)
+ * post_rename(oldpath,newpath)
+ * copy(oldpath,newpath, &run) (if the newpath doesn't exists yes, copy, create and write will be emitted in that order)
+ * post_rename(oldpath,newpath)
+ * post_initMountPoints(user, user_dir)
+ *
+ * the &run parameter can be set to false to prevent the operation from occurring
+ */
+
+namespace OC\Files;
+
+use OC\Files\Config\MountProviderCollection;
+use OC\Files\Mount\MountPoint;
+use OC\Files\Storage\StorageFactory;
+use OCP\Files\Config\IMountProvider;
+use OCP\Files\Mount\IMountPoint;
+use OCP\Files\NotFoundException;
+use OCP\IUserManager;
+
+class Filesystem {
+
+ /**
+ * @var Mount\Manager $mounts
+ */
+ private static $mounts;
+
+ public static $loaded = false;
+ /**
+ * @var \OC\Files\View $defaultInstance
+ */
+ static private $defaultInstance;
+
+ static private $usersSetup = array();
+
+ static private $normalizedPathCache = array();
+
+ static private $listeningForProviders = false;
+
+ /**
+ * classname which used for hooks handling
+ * used as signalclass in OC_Hooks::emit()
+ */
+ const CLASSNAME = 'OC_Filesystem';
+
+ /**
+ * signalname emitted before file renaming
+ *
+ * @param string $oldpath
+ * @param string $newpath
+ */
+ const signal_rename = 'rename';
+
+ /**
+ * signal emitted after file renaming
+ *
+ * @param string $oldpath
+ * @param string $newpath
+ */
+ const signal_post_rename = 'post_rename';
+
+ /**
+ * signal emitted before file/dir creation
+ *
+ * @param string $path
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_create = 'create';
+
+ /**
+ * signal emitted after file/dir creation
+ *
+ * @param string $path
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_post_create = 'post_create';
+
+ /**
+ * signal emits before file/dir copy
+ *
+ * @param string $oldpath
+ * @param string $newpath
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_copy = 'copy';
+
+ /**
+ * signal emits after file/dir copy
+ *
+ * @param string $oldpath
+ * @param string $newpath
+ */
+ const signal_post_copy = 'post_copy';
+
+ /**
+ * signal emits before file/dir save
+ *
+ * @param string $path
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_write = 'write';
+
+ /**
+ * signal emits after file/dir save
+ *
+ * @param string $path
+ */
+ const signal_post_write = 'post_write';
+
+ /**
+ * signal emitted before file/dir update
+ *
+ * @param string $path
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_update = 'update';
+
+ /**
+ * signal emitted after file/dir update
+ *
+ * @param string $path
+ * @param bool $run changing this flag to false in hook handler will cancel event
+ */
+ const signal_post_update = 'post_update';
+
+ /**
+ * signal emits when reading file/dir
+ *
+ * @param string $path
+ */
+ const signal_read = 'read';
+
+ /**
+ * signal emits when removing file/dir
+ *
+ * @param string $path
+ */
+ const signal_delete = 'delete';
+
+ /**
+ * parameters definitions for signals
+ */
+ const signal_param_path = 'path';
+ const signal_param_oldpath = 'oldpath';
+ const signal_param_newpath = 'newpath';
+
+ /**
+ * run - changing this flag to false in hook handler will cancel event
+ */
+ const signal_param_run = 'run';
+
+ const signal_create_mount = 'create_mount';
+ const signal_delete_mount = 'delete_mount';
+ const signal_param_mount_type = 'mounttype';
+ const signal_param_users = 'users';
+
+ /**
+ * @var \OC\Files\Storage\StorageFactory $loader
+ */
+ private static $loader;
+
+ /**
+ * @param string $wrapperName
+ * @param callable $wrapper
+ * @param int $priority
+ */
+ public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
+ $mounts = self::getMountManager()->getAll();
+ if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
+ // do not re-wrap if storage with this name already existed
+ return;
+ }
+ }
+
+ /**
+ * Returns the storage factory
+ *
+ * @return \OCP\Files\Storage\IStorageFactory
+ */
+ public static function getLoader() {
+ if (!self::$loader) {
+ self::$loader = new StorageFactory();
+ }
+ return self::$loader;
+ }
+
+ /**
+ * Returns the mount manager
+ *
+ * @return \OC\Files\Mount\Manager
+ */
+ public static function getMountManager($user = '') {
+ if (!self::$mounts) {
+ \OC_Util::setupFS($user);
+ }
+ return self::$mounts;
+ }
+
+ /**
+ * get the mountpoint of the storage object for a path
+ * ( note: because a storage is not always mounted inside the fakeroot, the
+ * returned mountpoint is relative to the absolute root of the filesystem
+ * and doesn't take the chroot into account )
+ *
+ * @param string $path
+ * @return string
+ */
+ static public function getMountPoint($path) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ $mount = self::$mounts->find($path);
+ if ($mount) {
+ return $mount->getMountPoint();
+ } else {
+ return '';
+ }
+ }
+
+ /**
+ * get a list of all mount points in a directory
+ *
+ * @param string $path
+ * @return string[]
+ */
+ static public function getMountPoints($path) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ $result = array();
+ $mounts = self::$mounts->findIn($path);
+ foreach ($mounts as $mount) {
+ $result[] = $mount->getMountPoint();
+ }
+ return $result;
+ }
+
+ /**
+ * get the storage mounted at $mountPoint
+ *
+ * @param string $mountPoint
+ * @return \OC\Files\Storage\Storage
+ */
+ public static function getStorage($mountPoint) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ $mount = self::$mounts->find($mountPoint);
+ return $mount->getStorage();
+ }
+
+ /**
+ * @param string $id
+ * @return Mount\MountPoint[]
+ */
+ public static function getMountByStorageId($id) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ return self::$mounts->findByStorageId($id);
+ }
+
+ /**
+ * @param int $id
+ * @return Mount\MountPoint[]
+ */
+ public static function getMountByNumericId($id) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ return self::$mounts->findByNumericId($id);
+ }
+
+ /**
+ * resolve a path to a storage and internal path
+ *
+ * @param string $path
+ * @return array an array consisting of the storage and the internal path
+ */
+ static public function resolvePath($path) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ $mount = self::$mounts->find($path);
+ if ($mount) {
+ return array($mount->getStorage(), rtrim($mount->getInternalPath($path), '/'));
+ } else {
+ return array(null, null);
+ }
+ }
+
+ static public function init($user, $root) {
+ if (self::$defaultInstance) {
+ return false;
+ }
+ self::getLoader();
+ self::$defaultInstance = new View($root);
+
+ if (!self::$mounts) {
+ self::$mounts = \OC::$server->getMountManager();
+ }
+
+ //load custom mount config
+ self::initMountPoints($user);
+
+ self::$loaded = true;
+
+ return true;
+ }
+
+ static public function initMountManager() {
+ if (!self::$mounts) {
+ self::$mounts = \OC::$server->getMountManager();
+ }
+ }
+
+ /**
+ * Initialize system and personal mount points for a user
+ *
+ * @param string $user
+ * @throws \OC\User\NoUserException if the user is not available
+ */
+ public static function initMountPoints($user = '') {
+ if ($user == '') {
+ $user = \OC_User::getUser();
+ }
+ if ($user === null || $user === false || $user === '') {
+ throw new \OC\User\NoUserException('Attempted to initialize mount points for null user and no user in session');
+ }
+ if (isset(self::$usersSetup[$user])) {
+ return;
+ }
+ $root = \OC_User::getHome($user);
+
+ $userManager = \OC::$server->getUserManager();
+ $userObject = $userManager->get($user);
+
+ if (is_null($userObject)) {
+ \OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
+ throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
+ }
+
+ self::$usersSetup[$user] = true;
+
+ $homeStorage = \OC::$server->getConfig()->getSystemValue('objectstore');
+ if (!empty($homeStorage)) {
+ // sanity checks
+ if (empty($homeStorage['class'])) {
+ \OCP\Util::writeLog('files', 'No class given for objectstore', \OCP\Util::ERROR);
+ }
+ if (!isset($homeStorage['arguments'])) {
+ $homeStorage['arguments'] = array();
+ }
+ // instantiate object store implementation
+ $homeStorage['arguments']['objectstore'] = new $homeStorage['class']($homeStorage['arguments']);
+ // mount with home object store implementation
+ $homeStorage['class'] = '\OC\Files\ObjectStore\HomeObjectStoreStorage';
+ } else {
+ $homeStorage = array(
+ //default home storage configuration:
+ 'class' => '\OC\Files\Storage\Home',
+ 'arguments' => array()
+ );
+ }
+ $homeStorage['arguments']['user'] = $userObject;
+
+ // check for legacy home id (<= 5.0.12)
+ if (\OC\Files\Cache\Storage::exists('local::' . $root . '/')) {
+ $homeStorage['arguments']['legacy'] = true;
+ }
+
+ $mount = new MountPoint($homeStorage['class'], '/' . $user, $homeStorage['arguments'], self::getLoader());
+ self::getMountManager()->addMount($mount);
+
+ $home = \OC\Files\Filesystem::getStorage($user);
+
+ self::mountCacheDir($user);
+
+ // Chance to mount for other storages
+ /** @var \OC\Files\Config\MountProviderCollection $mountConfigManager */
+ $mountConfigManager = \OC::$server->getMountProviderCollection();
+ if ($userObject) {
+ $mounts = $mountConfigManager->getMountsForUser($userObject);
+ array_walk($mounts, array(self::$mounts, 'addMount'));
+ $mounts[] = $mount;
+ $mountConfigManager->registerMounts($userObject, $mounts);
+ }
+
+ self::listenForNewMountProviders($mountConfigManager, $userManager);
+ \OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user, 'user_dir' => $root));
+ }
+
+ /**
+ * Get mounts from mount providers that are registered after setup
+ *
+ * @param MountProviderCollection $mountConfigManager
+ * @param IUserManager $userManager
+ */
+ private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
+ if (!self::$listeningForProviders) {
+ self::$listeningForProviders = true;
+ $mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
+ foreach (Filesystem::$usersSetup as $user => $setup) {
+ $userObject = $userManager->get($user);
+ if ($userObject) {
+ $mounts = $provider->getMountsForUser($userObject, Filesystem::getLoader());
+ array_walk($mounts, array(self::$mounts, 'addMount'));
+ }
+ }
+ });
+ }
+ }
+
+ /**
+ * Mounts the cache directory
+ *
+ * @param string $user user name
+ */
+ private static function mountCacheDir($user) {
+ $cacheBaseDir = \OC::$server->getConfig()->getSystemValue('cache_path', '');
+ if ($cacheBaseDir !== '') {
+ $cacheDir = rtrim($cacheBaseDir, '/') . '/' . $user;
+ if (!file_exists($cacheDir)) {
+ mkdir($cacheDir, 0770, true);
+ }
+ // mount external cache dir to "/$user/cache" mount point
+ self::mount('\OC\Files\Storage\Local', array('datadir' => $cacheDir), '/' . $user . '/cache');
+ }
+ }
+
+ /**
+ * get the default filesystem view
+ *
+ * @return View
+ */
+ static public function getView() {
+ return self::$defaultInstance;
+ }
+
+ /**
+ * tear down the filesystem, removing all storage providers
+ */
+ static public function tearDown() {
+ self::clearMounts();
+ self::$defaultInstance = null;
+ }
+
+ /**
+ * get the relative path of the root data directory for the current user
+ *
+ * @return string
+ *
+ * Returns path like /admin/files
+ */
+ static public function getRoot() {
+ if (!self::$defaultInstance) {
+ return null;
+ }
+ return self::$defaultInstance->getRoot();
+ }
+
+ /**
+ * clear all mounts and storage backends
+ */
+ public static function clearMounts() {
+ if (self::$mounts) {
+ self::$usersSetup = array();
+ self::$mounts->clear();
+ }
+ }
+
+ /**
+ * mount an \OC\Files\Storage\Storage in our virtual filesystem
+ *
+ * @param \OC\Files\Storage\Storage|string $class
+ * @param array $arguments
+ * @param string $mountpoint
+ */
+ static public function mount($class, $arguments, $mountpoint) {
+ if (!self::$mounts) {
+ \OC_Util::setupFS();
+ }
+ $mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
+ self::$mounts->addMount($mount);
+ }
+
+ /**
+ * return the path to a local version of the file
+ * we need this because we can't know if a file is stored local or not from
+ * outside the filestorage and for some purposes a local file is needed
+ *
+ * @param string $path
+ * @return string
+ */
+ static public function getLocalFile($path) {
+ return self::$defaultInstance->getLocalFile($path);
+ }
+
+ /**
+ * @param string $path
+ * @return string
+ */
+ static public function getLocalFolder($path) {
+ return self::$defaultInstance->getLocalFolder($path);
+ }
+
+ /**
+ * return path to file which reflects one visible in browser
+ *
+ * @param string $path
+ * @return string
+ */
+ static public function getLocalPath($path) {
+ $datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
+ $newpath = $path;
+ if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
+ $newpath = substr($path, strlen($datadir));
+ }
+ return $newpath;
+ }
+
+ /**
+ * check if the requested path is valid
+ *
+ * @param string $path
+ * @return bool
+ */
+ static public function isValidPath($path) {
+ $path = self::normalizePath($path);
+ if (!$path || $path[0] !== '/') {
+ $path = '/' . $path;
+ }
+ if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * checks if a file is blacklisted for storage in the filesystem
+ * Listens to write and rename hooks
+ *
+ * @param array $data from hook
+ */
+ static public function isBlacklisted($data) {
+ if (isset($data['path'])) {
+ $path = $data['path'];
+ } else if (isset($data['newpath'])) {
+ $path = $data['newpath'];
+ }
+ if (isset($path)) {
+ if (self::isFileBlacklisted($path)) {
+ $data['run'] = false;
+ }
+ }
+ }
+
+ /**
+ * @param string $filename
+ * @return bool
+ */
+ static public function isFileBlacklisted($filename) {
+ $filename = self::normalizePath($filename);
+
+ $blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', array('.htaccess'));
+ $filename = strtolower(basename($filename));
+ return in_array($filename, $blacklist);
+ }
+
+ /**
+ * check if the directory should be ignored when scanning
+ * NOTE: the special directories . and .. would cause never ending recursion
+ *
+ * @param String $dir
+ * @return boolean
+ */
+ static public function isIgnoredDir($dir) {
+ if ($dir === '.' || $dir === '..') {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * following functions are equivalent to their php builtin equivalents for arguments/return values.
+ */
+ static public function mkdir($path) {
+ return self::$defaultInstance->mkdir($path);
+ }
+
+ static public function rmdir($path) {
+ return self::$defaultInstance->rmdir($path);
+ }
+
+ static public function opendir($path) {
+ return self::$defaultInstance->opendir($path);
+ }
+
+ static public function readdir($path) {
+ return self::$defaultInstance->readdir($path);
+ }
+
+ static public function is_dir($path) {
+ return self::$defaultInstance->is_dir($path);
+ }
+
+ static public function is_file($path) {
+ return self::$defaultInstance->is_file($path);
+ }
+
+ static public function stat($path) {
+ return self::$defaultInstance->stat($path);
+ }
+
+ static public function filetype($path) {
+ return self::$defaultInstance->filetype($path);
+ }
+
+ static public function filesize($path) {
+ return self::$defaultInstance->filesize($path);
+ }
+
+ static public function readfile($path) {
+ return self::$defaultInstance->readfile($path);
+ }
+
+ static public function isCreatable($path) {
+ return self::$defaultInstance->isCreatable($path);
+ }
+
+ static public function isReadable($path) {
+ return self::$defaultInstance->isReadable($path);
+ }
+
+ static public function isUpdatable($path) {
+ return self::$defaultInstance->isUpdatable($path);
+ }
+
+ static public function isDeletable($path) {
+ return self::$defaultInstance->isDeletable($path);
+ }
+
+ static public function isSharable($path) {
+ return self::$defaultInstance->isSharable($path);
+ }
+
+ static public function file_exists($path) {
+ return self::$defaultInstance->file_exists($path);
+ }
+
+ static public function filemtime($path) {
+ return self::$defaultInstance->filemtime($path);
+ }
+
+ static public function touch($path, $mtime = null) {
+ return self::$defaultInstance->touch($path, $mtime);
+ }
+
+ /**
+ * @return string
+ */
+ static public function file_get_contents($path) {
+ return self::$defaultInstance->file_get_contents($path);
+ }
+
+ static public function file_put_contents($path, $data) {
+ return self::$defaultInstance->file_put_contents($path, $data);
+ }
+
+ static public function unlink($path) {
+ return self::$defaultInstance->unlink($path);
+ }
+
+ static public function rename($path1, $path2) {
+ return self::$defaultInstance->rename($path1, $path2);
+ }
+
+ static public function copy($path1, $path2) {
+ return self::$defaultInstance->copy($path1, $path2);
+ }
+
+ static public function fopen($path, $mode) {
+ return self::$defaultInstance->fopen($path, $mode);
+ }
+
+ /**
+ * @return string
+ */
+ static public function toTmpFile($path) {
+ return self::$defaultInstance->toTmpFile($path);
+ }
+
+ static public function fromTmpFile($tmpFile, $path) {
+ return self::$defaultInstance->fromTmpFile($tmpFile, $path);
+ }
+
+ static public function getMimeType($path) {
+ return self::$defaultInstance->getMimeType($path);
+ }
+
+ static public function hash($type, $path, $raw = false) {
+ return self::$defaultInstance->hash($type, $path, $raw);
+ }
+
+ static public function free_space($path = '/') {
+ return self::$defaultInstance->free_space($path);
+ }
+
+ static public function search($query) {
+ return self::$defaultInstance->search($query);
+ }
+
+ /**
+ * @param string $query
+ */
+ static public function searchByMime($query) {
+ return self::$defaultInstance->searchByMime($query);
+ }
+
+ /**
+ * @param string|int $tag name or tag id
+ * @param string $userId owner of the tags
+ * @return FileInfo[] array or file info
+ */
+ static public function searchByTag($tag, $userId) {
+ return self::$defaultInstance->searchByTag($tag, $userId);
+ }
+
+ /**
+ * check if a file or folder has been updated since $time
+ *
+ * @param string $path
+ * @param int $time
+ * @return bool
+ */
+ static public function hasUpdated($path, $time) {
+ return self::$defaultInstance->hasUpdated($path, $time);
+ }
+
+ /**
+ * Fix common problems with a file path
+ *
+ * @param string $path
+ * @param bool $stripTrailingSlash
+ * @param bool $isAbsolutePath
+ * @return string
+ */
+ public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false) {
+ /**
+ * FIXME: This is a workaround for existing classes and files which call
+ * this function with another type than a valid string. This
+ * conversion should get removed as soon as all existing
+ * function calls have been fixed.
+ */
+ $path = (string)$path;
+
+ $cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath]);
+
+ if (isset(self::$normalizedPathCache[$cacheKey])) {
+ return self::$normalizedPathCache[$cacheKey];
+ }
+
+ if ($path == '') {
+ return '/';
+ }
+
+ //normalize unicode if possible
+ $path = \OC_Util::normalizeUnicode($path);
+
+ //no windows style slashes
+ $path = str_replace('\\', '/', $path);
+
+ // When normalizing an absolute path, we need to ensure that the drive-letter
+ // is still at the beginning on windows
+ $windows_drive_letter = '';
+ if ($isAbsolutePath && \OC_Util::runningOnWindows() && preg_match('#^([a-zA-Z])$#', $path[0]) && $path[1] == ':' && $path[2] == '/') {
+ $windows_drive_letter = substr($path, 0, 2);
+ $path = substr($path, 2);
+ }
+
+ //add leading slash
+ if ($path[0] !== '/') {
+ $path = '/' . $path;
+ }
+
+ // remove '/./'
+ // ugly, but str_replace() can't replace them all in one go
+ // as the replacement itself is part of the search string
+ // which will only be found during the next iteration
+ while (strpos($path, '/./') !== false) {
+ $path = str_replace('/./', '/', $path);
+ }
+ // remove sequences of slashes
+ $path = preg_replace('#/{2,}#', '/', $path);
+
+ //remove trailing slash
+ if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
+ $path = substr($path, 0, -1);
+ }
+
+ // remove trailing '/.'
+ if (substr($path, -2) == '/.') {
+ $path = substr($path, 0, -2);
+ }
+
+ $normalizedPath = $windows_drive_letter . $path;
+ self::$normalizedPathCache[$cacheKey] = $normalizedPath;
+
+ return $normalizedPath;
+ }
+
+ /**
+ * get the filesystem info
+ *
+ * @param string $path
+ * @param boolean $includeMountPoints whether to add mountpoint sizes,
+ * defaults to true
+ * @return \OC\Files\FileInfo|bool False if file does not exist
+ */
+ public static function getFileInfo($path, $includeMountPoints = true) {
+ return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
+ }
+
+ /**
+ * change file metadata
+ *
+ * @param string $path
+ * @param array $data
+ * @return int
+ *
+ * returns the fileid of the updated file
+ */
+ public static function putFileInfo($path, $data) {
+ return self::$defaultInstance->putFileInfo($path, $data);
+ }
+
+ /**
+ * get the content of a directory
+ *
+ * @param string $directory path under datadirectory
+ * @param string $mimetype_filter limit returned content to this mimetype or mimepart
+ * @return \OC\Files\FileInfo[]
+ */
+ public static function getDirectoryContent($directory, $mimetype_filter = '') {
+ return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
+ }
+
+ /**
+ * Get the path of a file by id
+ *
+ * Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
+ *
+ * @param int $id
+ * @throws NotFoundException
+ * @return string
+ */
+ public static function getPath($id) {
+ return self::$defaultInstance->getPath($id);
+ }
+
+ /**
+ * Get the owner for a file or folder
+ *
+ * @param string $path
+ * @return string
+ */
+ public static function getOwner($path) {
+ return self::$defaultInstance->getOwner($path);
+ }
+
+ /**
+ * get the ETag for a file or folder
+ *
+ * @param string $path
+ * @return string
+ */
+ static public function getETag($path) {
+ return self::$defaultInstance->getETag($path);
+ }
+}