nextcloud / server

lib/public/Files/File.php

Indentation +63 added lines, -63 removed lines

@@ -35,73 +35,73 @@
  * @since 6.0.0
  */
 interface File extends Node {
-	/**
-	 * Get the content of the file as string
-	 *
-	 * @return string
-	 * @throws NotPermittedException
-	 * @throws GenericFileException
-	 * @throws LockedException
-	 * @since 6.0.0
-	 */
-	public function getContent();
+    /**
+     * Get the content of the file as string
+     *
+     * @return string
+     * @throws NotPermittedException
+     * @throws GenericFileException
+     * @throws LockedException
+     * @since 6.0.0
+     */
+    public function getContent();
 
-	/**
-	 * Write to the file from string data
-	 *
-	 * @param string|resource $data
-	 * @throws NotPermittedException
-	 * @throws GenericFileException
-	 * @throws LockedException
-	 * @since 6.0.0
-	 */
-	public function putContent($data);
+    /**
+     * Write to the file from string data
+     *
+     * @param string|resource $data
+     * @throws NotPermittedException
+     * @throws GenericFileException
+     * @throws LockedException
+     * @since 6.0.0
+     */
+    public function putContent($data);
 
-	/**
-	 * Get the mimetype of the file
-	 *
-	 * @return string
-	 * @since 6.0.0
-	 */
-	public function getMimeType();
+    /**
+     * Get the mimetype of the file
+     *
+     * @return string
+     * @since 6.0.0
+     */
+    public function getMimeType();
 
-	/**
-	 * Open the file as stream, resulting resource can be operated as stream like the result from php's own fopen
-	 *
-	 * @param string $mode
-	 * @return resource|false
-	 * @throws NotPermittedException
-	 * @throws LockedException
-	 * @since 6.0.0
-	 */
-	public function fopen($mode);
+    /**
+     * Open the file as stream, resulting resource can be operated as stream like the result from php's own fopen
+     *
+     * @param string $mode
+     * @return resource|false
+     * @throws NotPermittedException
+     * @throws LockedException
+     * @since 6.0.0
+     */
+    public function fopen($mode);
 
-	/**
-	 * Compute the hash of the file
-	 * Type of hash is set with $type and can be anything supported by php's hash_file
-	 *
-	 * @param string $type
-	 * @param bool $raw
-	 * @return string
-	 * @since 6.0.0
-	 */
-	public function hash($type, $raw = false);
+    /**
+     * Compute the hash of the file
+     * Type of hash is set with $type and can be anything supported by php's hash_file
+     *
+     * @param string $type
+     * @param bool $raw
+     * @return string
+     * @since 6.0.0
+     */
+    public function hash($type, $raw = false);
 
-	/**
-	 * Get the stored checksum for this file
-	 *
-	 * @return string
-	 * @since 9.0.0
-	 * @throws InvalidPathException
-	 * @throws NotFoundException
-	 */
-	public function getChecksum();
+    /**
+     * Get the stored checksum for this file
+     *
+     * @return string
+     * @since 9.0.0
+     * @throws InvalidPathException
+     * @throws NotFoundException
+     */
+    public function getChecksum();
 
-	/**
-	 * Get the extension of this file
-	 *
-	 * @return string
-	 * @since 15.0.0
-	 */
-	public function getExtension(): string;
+    /**
+     * Get the extension of this file
+     *
+     * @return string
+     * @since 15.0.0
+     */
+    public function getExtension(): string;
 }

lib/public/Files/Storage/IStorage.php

Indentation +416 added lines, -416 removed lines

@@ -44,420 +44,420 @@
  * @since 9.0.0
  */
 interface IStorage {
-	/**
-	 * $parameters is a free form array with the configuration options needed to construct the storage
-	 *
-	 * @param array $parameters
-	 * @since 9.0.0
-	 */
-	public function __construct($parameters);
-
-	/**
-	 * Get the identifier for the storage,
-	 * the returned id should be the same for every storage object that is created with the same parameters
-	 * and two storage objects with the same id should refer to two storages that display the same files.
-	 *
-	 * @return string
-	 * @since 9.0.0
-	 */
-	public function getId();
-
-	/**
-	 * see https://www.php.net/manual/en/function.mkdir.php
-	 * implementations need to implement a recursive mkdir
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function mkdir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function rmdir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.opendir.php
-	 *
-	 * @param string $path
-	 * @return resource|false
-	 * @since 9.0.0
-	 */
-	public function opendir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.is-dir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function is_dir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.is-file.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function is_file($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 * @since 9.0.0
-	 */
-	public function stat($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filetype.php
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 * @since 9.0.0
-	 */
-	public function filetype($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 *
-	 * @param string $path
-	 * @return false|int|float
-	 * @since 9.0.0
-	 */
-	public function filesize($path);
-
-	/**
-	 * check if a file can be created in $path
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function isCreatable($path);
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function isReadable($path);
-
-	/**
-	 * check if a file can be written to
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function isUpdatable($path);
-
-	/**
-	 * check if a file can be deleted
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function isDeletable($path);
-
-	/**
-	 * check if a file can be shared
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function isSharable($path);
-
-	/**
-	 * get the full permissions of a path.
-	 * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
-	 *
-	 * @param string $path
-	 * @return int
-	 * @since 9.0.0
-	 */
-	public function getPermissions($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_exists.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function file_exists($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filemtime.php
-	 *
-	 * @param string $path
-	 * @return int|bool
-	 * @since 9.0.0
-	 */
-	public function filemtime($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 9.0.0
-	 */
-	public function file_get_contents($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|float|false
-	 * @since 9.0.0
-	 */
-	public function file_put_contents($path, $data);
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function unlink($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function rename($source, $target);
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function copy($source, $target);
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 * @since 9.0.0
-	 */
-	public function fopen($path, $mode);
-
-	/**
-	 * get the mimetype for a file or folder
-	 * The mimetype for a folder is required to be "httpd/unix-directory"
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 * @since 9.0.0
-	 */
-	public function getMimeType($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.hash-file.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string|bool
-	 * @since 9.0.0
-	 */
-	public function hash($type, $path, $raw = false);
-
-	/**
-	 * see https://www.php.net/manual/en/function.free_space.php
-	 *
-	 * @param string $path
-	 * @return int|float|bool
-	 * @since 9.0.0
-	 */
-	public function free_space($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.touch.php
-	 * If the backend does not support the operation, false should be returned
-	 *
-	 * @param string $path
-	 * @param int $mtime
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function touch($path, $mtime = null);
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 9.0.0
-	 */
-	public function getLocalFile($path);
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 * @since 9.0.0
-	 *
-	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
-	 * returning true for other changes in the folder is optional
-	 */
-	public function hasUpdated($path, $time);
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 9.0.0
-	 */
-	public function getETag($path);
-
-	/**
-	 * Returns whether the storage is local, which means that files
-	 * are stored on the local filesystem instead of remotely.
-	 * Calling getLocalFile() for local storages should always
-	 * return the local files, whereas for non-local storages
-	 * it might return a temporary file.
-	 *
-	 * @return bool true if the files are stored locally, false otherwise
-	 * @since 9.0.0
-	 */
-	public function isLocal();
-
-	/**
-	 * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
-	 *
-	 * @template T of IStorage
-	 * @param string $class
-	 * @psalm-param class-string<T> $class
-	 * @return bool
-	 * @since 9.0.0
-	 * @psalm-assert-if-true T $this
-	 */
-	public function instanceOfStorage($class);
-
-	/**
-	 * A custom storage implementation can return an url for direct download of a give file.
-	 *
-	 * For now the returned array can hold the parameter url - in future more attributes might follow.
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 * @since 9.0.0
-	 */
-	public function getDirectDownload($path);
-
-	/**
-	 * @param string $path the path of the target folder
-	 * @param string $fileName the name of the file itself
-	 * @return void
-	 * @throws InvalidPathException
-	 * @since 9.0.0
-	 */
-	public function verifyPath($path, $fileName);
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 * @since 9.0.0
-	 */
-	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
-
-	/**
-	 * Test a storage for availability
-	 *
-	 * @since 9.0.0
-	 * @return bool
-	 */
-	public function test();
-
-	/**
-	 * @since 9.0.0
-	 * @return array [ available, last_checked ]
-	 */
-	public function getAvailability();
-
-	/**
-	 * @since 9.0.0
-	 * @param bool $isAvailable
-	 */
-	public function setAvailability($isAvailable);
-
-	/**
-	 * @param string $path path for which to retrieve the owner
-	 * @since 9.0.0
-	 */
-	public function getOwner($path);
-
-	/**
-	 * @param string $path
-	 * @param IStorage|null $storage
-	 * @return ICache
-	 * @since 9.0.0
-	 */
-	public function getCache($path = '', $storage = null);
-
-	/**
-	 * @return IPropagator
-	 * @since 9.0.0
-	 */
-	public function getPropagator();
-
-	/**
-	 * @return IScanner
-	 * @since 9.0.0
-	 */
-	public function getScanner();
-
-	/**
-	 * @return IUpdater
-	 * @since 9.0.0
-	 */
-	public function getUpdater();
-
-	/**
-	 * @return IWatcher
-	 * @since 9.0.0
-	 */
-	public function getWatcher();
+    /**
+     * $parameters is a free form array with the configuration options needed to construct the storage
+     *
+     * @param array $parameters
+     * @since 9.0.0
+     */
+    public function __construct($parameters);
+
+    /**
+     * Get the identifier for the storage,
+     * the returned id should be the same for every storage object that is created with the same parameters
+     * and two storage objects with the same id should refer to two storages that display the same files.
+     *
+     * @return string
+     * @since 9.0.0
+     */
+    public function getId();
+
+    /**
+     * see https://www.php.net/manual/en/function.mkdir.php
+     * implementations need to implement a recursive mkdir
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function mkdir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function rmdir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.opendir.php
+     *
+     * @param string $path
+     * @return resource|false
+     * @since 9.0.0
+     */
+    public function opendir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.is-dir.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function is_dir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.is-file.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function is_file($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array|bool
+     * @since 9.0.0
+     */
+    public function stat($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filetype.php
+     *
+     * @param string $path
+     * @return string|bool
+     * @since 9.0.0
+     */
+    public function filetype($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     *
+     * @param string $path
+     * @return false|int|float
+     * @since 9.0.0
+     */
+    public function filesize($path);
+
+    /**
+     * check if a file can be created in $path
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function isCreatable($path);
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function isReadable($path);
+
+    /**
+     * check if a file can be written to
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function isUpdatable($path);
+
+    /**
+     * check if a file can be deleted
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function isDeletable($path);
+
+    /**
+     * check if a file can be shared
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function isSharable($path);
+
+    /**
+     * get the full permissions of a path.
+     * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
+     *
+     * @param string $path
+     * @return int
+     * @since 9.0.0
+     */
+    public function getPermissions($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_exists.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function file_exists($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filemtime.php
+     *
+     * @param string $path
+     * @return int|bool
+     * @since 9.0.0
+     */
+    public function filemtime($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     * @since 9.0.0
+     */
+    public function file_get_contents($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|float|false
+     * @since 9.0.0
+     */
+    public function file_put_contents($path, $data);
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 9.0.0
+     */
+    public function unlink($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     * @since 9.0.0
+     */
+    public function rename($source, $target);
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     * @since 9.0.0
+     */
+    public function copy($source, $target);
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     * @since 9.0.0
+     */
+    public function fopen($path, $mode);
+
+    /**
+     * get the mimetype for a file or folder
+     * The mimetype for a folder is required to be "httpd/unix-directory"
+     *
+     * @param string $path
+     * @return string|bool
+     * @since 9.0.0
+     */
+    public function getMimeType($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.hash-file.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string|bool
+     * @since 9.0.0
+     */
+    public function hash($type, $path, $raw = false);
+
+    /**
+     * see https://www.php.net/manual/en/function.free_space.php
+     *
+     * @param string $path
+     * @return int|float|bool
+     * @since 9.0.0
+     */
+    public function free_space($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.touch.php
+     * If the backend does not support the operation, false should be returned
+     *
+     * @param string $path
+     * @param int $mtime
+     * @return bool
+     * @since 9.0.0
+     */
+    public function touch($path, $mtime = null);
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string|false
+     * @since 9.0.0
+     */
+    public function getLocalFile($path);
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     * @since 9.0.0
+     *
+     * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+     * returning true for other changes in the folder is optional
+     */
+    public function hasUpdated($path, $time);
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     * @since 9.0.0
+     */
+    public function getETag($path);
+
+    /**
+     * Returns whether the storage is local, which means that files
+     * are stored on the local filesystem instead of remotely.
+     * Calling getLocalFile() for local storages should always
+     * return the local files, whereas for non-local storages
+     * it might return a temporary file.
+     *
+     * @return bool true if the files are stored locally, false otherwise
+     * @since 9.0.0
+     */
+    public function isLocal();
+
+    /**
+     * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
+     *
+     * @template T of IStorage
+     * @param string $class
+     * @psalm-param class-string<T> $class
+     * @return bool
+     * @since 9.0.0
+     * @psalm-assert-if-true T $this
+     */
+    public function instanceOfStorage($class);
+
+    /**
+     * A custom storage implementation can return an url for direct download of a give file.
+     *
+     * For now the returned array can hold the parameter url - in future more attributes might follow.
+     *
+     * @param string $path
+     * @return array|bool
+     * @since 9.0.0
+     */
+    public function getDirectDownload($path);
+
+    /**
+     * @param string $path the path of the target folder
+     * @param string $fileName the name of the file itself
+     * @return void
+     * @throws InvalidPathException
+     * @since 9.0.0
+     */
+    public function verifyPath($path, $fileName);
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     * @since 9.0.0
+     */
+    public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     * @since 9.0.0
+     */
+    public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
+
+    /**
+     * Test a storage for availability
+     *
+     * @since 9.0.0
+     * @return bool
+     */
+    public function test();
+
+    /**
+     * @since 9.0.0
+     * @return array [ available, last_checked ]
+     */
+    public function getAvailability();
+
+    /**
+     * @since 9.0.0
+     * @param bool $isAvailable
+     */
+    public function setAvailability($isAvailable);
+
+    /**
+     * @param string $path path for which to retrieve the owner
+     * @since 9.0.0
+     */
+    public function getOwner($path);
+
+    /**
+     * @param string $path
+     * @param IStorage|null $storage
+     * @return ICache
+     * @since 9.0.0
+     */
+    public function getCache($path = '', $storage = null);
+
+    /**
+     * @return IPropagator
+     * @since 9.0.0
+     */
+    public function getPropagator();
+
+    /**
+     * @return IScanner
+     * @since 9.0.0
+     */
+    public function getScanner();
+
+    /**
+     * @return IUpdater
+     * @since 9.0.0
+     */
+    public function getUpdater();
+
+    /**
+     * @return IWatcher
+     * @since 9.0.0
+     */
+    public function getWatcher();
 }

lib/public/Files/Storage.php

Indentation +420 added lines, -420 removed lines

@@ -47,424 +47,424 @@
  * @deprecated 9.0.0 use \OCP\Files\Storage\IStorage instead
  */
 interface Storage extends IStorage {
-	/**
-	 * $parameters is a free form array with the configuration options needed to construct the storage
-	 *
-	 * @param array $parameters
-	 * @since 6.0.0
-	 */
-	public function __construct($parameters);
-
-	/**
-	 * Get the identifier for the storage,
-	 * the returned id should be the same for every storage object that is created with the same parameters
-	 * and two storage objects with the same id should refer to two storages that display the same files.
-	 *
-	 * @return string
-	 * @since 6.0.0
-	 */
-	public function getId();
-
-	/**
-	 * see https://www.php.net/manual/en/function.mkdir.php
-	 * implementations need to implement a recursive mkdir
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function mkdir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function rmdir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.opendir.php
-	 *
-	 * @param string $path
-	 * @return resource|false
-	 * @since 6.0.0
-	 */
-	public function opendir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.is-dir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function is_dir($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.is-file.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function is_file($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 * @since 6.0.0
-	 */
-	public function stat($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filetype.php
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 * @since 6.0.0
-	 */
-	public function filetype($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 *
-	 * @param string $path
-	 * @return false|int|float
-	 * @since 6.0.0
-	 */
-	public function filesize($path);
-
-	/**
-	 * check if a file can be created in $path
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function isCreatable($path);
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function isReadable($path);
-
-	/**
-	 * check if a file can be written to
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function isUpdatable($path);
-
-	/**
-	 * check if a file can be deleted
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function isDeletable($path);
-
-	/**
-	 * check if a file can be shared
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function isSharable($path);
-
-	/**
-	 * get the full permissions of a path.
-	 * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
-	 *
-	 * @param string $path
-	 * @return int
-	 * @since 6.0.0
-	 */
-	public function getPermissions($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_exists.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function file_exists($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.filemtime.php
-	 *
-	 * @param string $path
-	 * @return int|bool
-	 * @since 6.0.0
-	 */
-	public function filemtime($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 6.0.0
-	 */
-	public function file_get_contents($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|float|false
-	 * @since 6.0.0
-	 */
-	public function file_put_contents($path, $data);
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function unlink($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function rename($source, $target);
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function copy($source, $target);
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 * @since 6.0.0
-	 */
-	public function fopen($path, $mode);
-
-	/**
-	 * get the mimetype for a file or folder
-	 * The mimetype for a folder is required to be "httpd/unix-directory"
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 * @since 6.0.0
-	 */
-	public function getMimeType($path);
-
-	/**
-	 * see https://www.php.net/manual/en/function.hash-file.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string|bool
-	 * @since 6.0.0
-	 */
-	public function hash($type, $path, $raw = false);
-
-	/**
-	 * see https://www.php.net/manual/en/function.disk-free-space.php
-	 *
-	 * @param string $path
-	 * @return int|float|bool
-	 * @since 6.0.0
-	 */
-	public function free_space($path);
-
-	/**
-	 * search for occurrences of $query in file names
-	 *
-	 * @param string $query
-	 * @return array|bool
-	 * @since 6.0.0
-	 */
-	public function search($query);
-
-	/**
-	 * see https://www.php.net/manual/en/function.touch.php
-	 * If the backend does not support the operation, false should be returned
-	 *
-	 * @param string $path
-	 * @param int $mtime
-	 * @return bool
-	 * @since 6.0.0
-	 */
-	public function touch($path, $mtime = null);
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 6.0.0
-	 */
-	public function getLocalFile($path);
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 * @since 6.0.0
-	 *
-	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
-	 * returning true for other changes in the folder is optional
-	 */
-	public function hasUpdated($path, $time);
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 * @since 6.0.0
-	 */
-	public function getETag($path);
-
-	/**
-	 * Returns whether the storage is local, which means that files
-	 * are stored on the local filesystem instead of remotely.
-	 * Calling getLocalFile() for local storages should always
-	 * return the local files, whereas for non-local storages
-	 * it might return a temporary file.
-	 *
-	 * @return bool true if the files are stored locally, false otherwise
-	 * @since 7.0.0
-	 */
-	public function isLocal();
-
-	/**
-	 * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
-	 *
-	 * @template T of IStorage
-	 * @param string $class
-	 * @psalm-param class-string<T> $class
-	 * @return bool
-	 * @since 7.0.0
-	 * @psalm-assert-if-true T $this
-	 */
-	public function instanceOfStorage($class);
-
-	/**
-	 * A custom storage implementation can return an url for direct download of a give file.
-	 *
-	 * For now the returned array can hold the parameter url - in future more attributes might follow.
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 * @since 8.0.0
-	 */
-	public function getDirectDownload($path);
-
-	/**
-	 * @param string $path the path of the target folder
-	 * @param string $fileName the name of the file itself
-	 * @return void
-	 * @throws InvalidPathException
-	 * @since 8.1.0
-	 */
-	public function verifyPath($path, $fileName);
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 * @since 8.1.0
-	 */
-	public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 * @since 8.1.0
-	 */
-	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
-
-	/**
-	 * @param string $path The path of the file to acquire the lock for
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 * @throws \OCP\Lock\LockedException
-	 * @since 8.1.0
-	 */
-	public function acquireLock($path, $type, ILockingProvider $provider);
-
-	/**
-	 * @param string $path The path of the file to acquire the lock for
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 * @throws \OCP\Lock\LockedException
-	 * @since 8.1.0
-	 */
-	public function releaseLock($path, $type, ILockingProvider $provider);
-
-	/**
-	 * @param string $path The path of the file to change the lock for
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 * @throws \OCP\Lock\LockedException
-	 * @since 8.1.0
-	 */
-	public function changeLock($path, $type, ILockingProvider $provider);
-
-	/**
-	 * Test a storage for availability
-	 *
-	 * @since 8.2.0
-	 * @return bool
-	 */
-	public function test();
-
-	/**
-	 * @since 8.2.0
-	 * @return array [ available, last_checked ]
-	 */
-	public function getAvailability();
-
-	/**
-	 * @since 8.2.0
-	 * @param bool $isAvailable
-	 */
-	public function setAvailability($isAvailable);
-
-	/**
-	 * @since 12.0.0
-	 * @return mixed
-	 */
-	public function needsPartFile();
+    /**
+     * $parameters is a free form array with the configuration options needed to construct the storage
+     *
+     * @param array $parameters
+     * @since 6.0.0
+     */
+    public function __construct($parameters);
+
+    /**
+     * Get the identifier for the storage,
+     * the returned id should be the same for every storage object that is created with the same parameters
+     * and two storage objects with the same id should refer to two storages that display the same files.
+     *
+     * @return string
+     * @since 6.0.0
+     */
+    public function getId();
+
+    /**
+     * see https://www.php.net/manual/en/function.mkdir.php
+     * implementations need to implement a recursive mkdir
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function mkdir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function rmdir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.opendir.php
+     *
+     * @param string $path
+     * @return resource|false
+     * @since 6.0.0
+     */
+    public function opendir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.is-dir.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function is_dir($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.is-file.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function is_file($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array|bool
+     * @since 6.0.0
+     */
+    public function stat($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filetype.php
+     *
+     * @param string $path
+     * @return string|bool
+     * @since 6.0.0
+     */
+    public function filetype($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     *
+     * @param string $path
+     * @return false|int|float
+     * @since 6.0.0
+     */
+    public function filesize($path);
+
+    /**
+     * check if a file can be created in $path
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function isCreatable($path);
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function isReadable($path);
+
+    /**
+     * check if a file can be written to
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function isUpdatable($path);
+
+    /**
+     * check if a file can be deleted
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function isDeletable($path);
+
+    /**
+     * check if a file can be shared
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function isSharable($path);
+
+    /**
+     * get the full permissions of a path.
+     * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
+     *
+     * @param string $path
+     * @return int
+     * @since 6.0.0
+     */
+    public function getPermissions($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_exists.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function file_exists($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.filemtime.php
+     *
+     * @param string $path
+     * @return int|bool
+     * @since 6.0.0
+     */
+    public function filemtime($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     * @since 6.0.0
+     */
+    public function file_get_contents($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|float|false
+     * @since 6.0.0
+     */
+    public function file_put_contents($path, $data);
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     * @since 6.0.0
+     */
+    public function unlink($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     * @since 6.0.0
+     */
+    public function rename($source, $target);
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     * @since 6.0.0
+     */
+    public function copy($source, $target);
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     * @since 6.0.0
+     */
+    public function fopen($path, $mode);
+
+    /**
+     * get the mimetype for a file or folder
+     * The mimetype for a folder is required to be "httpd/unix-directory"
+     *
+     * @param string $path
+     * @return string|bool
+     * @since 6.0.0
+     */
+    public function getMimeType($path);
+
+    /**
+     * see https://www.php.net/manual/en/function.hash-file.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string|bool
+     * @since 6.0.0
+     */
+    public function hash($type, $path, $raw = false);
+
+    /**
+     * see https://www.php.net/manual/en/function.disk-free-space.php
+     *
+     * @param string $path
+     * @return int|float|bool
+     * @since 6.0.0
+     */
+    public function free_space($path);
+
+    /**
+     * search for occurrences of $query in file names
+     *
+     * @param string $query
+     * @return array|bool
+     * @since 6.0.0
+     */
+    public function search($query);
+
+    /**
+     * see https://www.php.net/manual/en/function.touch.php
+     * If the backend does not support the operation, false should be returned
+     *
+     * @param string $path
+     * @param int $mtime
+     * @return bool
+     * @since 6.0.0
+     */
+    public function touch($path, $mtime = null);
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string|false
+     * @since 6.0.0
+     */
+    public function getLocalFile($path);
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     * @since 6.0.0
+     *
+     * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+     * returning true for other changes in the folder is optional
+     */
+    public function hasUpdated($path, $time);
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     * @since 6.0.0
+     */
+    public function getETag($path);
+
+    /**
+     * Returns whether the storage is local, which means that files
+     * are stored on the local filesystem instead of remotely.
+     * Calling getLocalFile() for local storages should always
+     * return the local files, whereas for non-local storages
+     * it might return a temporary file.
+     *
+     * @return bool true if the files are stored locally, false otherwise
+     * @since 7.0.0
+     */
+    public function isLocal();
+
+    /**
+     * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
+     *
+     * @template T of IStorage
+     * @param string $class
+     * @psalm-param class-string<T> $class
+     * @return bool
+     * @since 7.0.0
+     * @psalm-assert-if-true T $this
+     */
+    public function instanceOfStorage($class);
+
+    /**
+     * A custom storage implementation can return an url for direct download of a give file.
+     *
+     * For now the returned array can hold the parameter url - in future more attributes might follow.
+     *
+     * @param string $path
+     * @return array|bool
+     * @since 8.0.0
+     */
+    public function getDirectDownload($path);
+
+    /**
+     * @param string $path the path of the target folder
+     * @param string $fileName the name of the file itself
+     * @return void
+     * @throws InvalidPathException
+     * @since 8.1.0
+     */
+    public function verifyPath($path, $fileName);
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     * @since 8.1.0
+     */
+    public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     * @since 8.1.0
+     */
+    public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath);
+
+    /**
+     * @param string $path The path of the file to acquire the lock for
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     * @throws \OCP\Lock\LockedException
+     * @since 8.1.0
+     */
+    public function acquireLock($path, $type, ILockingProvider $provider);
+
+    /**
+     * @param string $path The path of the file to acquire the lock for
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     * @throws \OCP\Lock\LockedException
+     * @since 8.1.0
+     */
+    public function releaseLock($path, $type, ILockingProvider $provider);
+
+    /**
+     * @param string $path The path of the file to change the lock for
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     * @throws \OCP\Lock\LockedException
+     * @since 8.1.0
+     */
+    public function changeLock($path, $type, ILockingProvider $provider);
+
+    /**
+     * Test a storage for availability
+     *
+     * @since 8.2.0
+     * @return bool
+     */
+    public function test();
+
+    /**
+     * @since 8.2.0
+     * @return array [ available, last_checked ]
+     */
+    public function getAvailability();
+
+    /**
+     * @since 8.2.0
+     * @param bool $isAvailable
+     */
+    public function setAvailability($isAvailable);
+
+    /**
+     * @since 12.0.0
+     * @return mixed
+     */
+    public function needsPartFile();
 }

lib/private/Files/Node/File.php

Indentation +117 added lines, -117 removed lines

@@ -33,129 +33,129 @@
 use OCP\Lock\LockedException;
 
 class File extends Node implements \OCP\Files\File {
-	/**
-	 * Creates a Folder that represents a non-existing path
-	 *
-	 * @param string $path path
-	 * @return NonExistingFile non-existing node
-	 */
-	protected function createNonExistingNode($path) {
-		return new NonExistingFile($this->root, $this->view, $path);
-	}
+    /**
+     * Creates a Folder that represents a non-existing path
+     *
+     * @param string $path path
+     * @return NonExistingFile non-existing node
+     */
+    protected function createNonExistingNode($path) {
+        return new NonExistingFile($this->root, $this->view, $path);
+    }
 
-	/**
-	 * @return string
-	 * @throws NotPermittedException
-	 * @throws GenericFileException
-	 * @throws LockedException
-	 */
-	public function getContent() {
-		if ($this->checkPermissions(\OCP\Constants::PERMISSION_READ)) {
-			$content = $this->view->file_get_contents($this->path);
-			if ($content === false) {
-				throw new GenericFileException();
-			}
-			return $content;
-		} else {
-			throw new NotPermittedException();
-		}
-	}
+    /**
+     * @return string
+     * @throws NotPermittedException
+     * @throws GenericFileException
+     * @throws LockedException
+     */
+    public function getContent() {
+        if ($this->checkPermissions(\OCP\Constants::PERMISSION_READ)) {
+            $content = $this->view->file_get_contents($this->path);
+            if ($content === false) {
+                throw new GenericFileException();
+            }
+            return $content;
+        } else {
+            throw new NotPermittedException();
+        }
+    }
 
-	/**
-	 * @param string|resource $data
-	 * @throws NotPermittedException
-	 * @throws GenericFileException
-	 * @throws LockedException
-	 */
-	public function putContent($data) {
-		if ($this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE)) {
-			$this->sendHooks(['preWrite']);
-			if ($this->view->file_put_contents($this->path, $data) === false) {
-				throw new GenericFileException('file_put_contents failed');
-			}
-			$this->fileInfo = null;
-			$this->sendHooks(['postWrite']);
-		} else {
-			throw new NotPermittedException();
-		}
-	}
+    /**
+     * @param string|resource $data
+     * @throws NotPermittedException
+     * @throws GenericFileException
+     * @throws LockedException
+     */
+    public function putContent($data) {
+        if ($this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE)) {
+            $this->sendHooks(['preWrite']);
+            if ($this->view->file_put_contents($this->path, $data) === false) {
+                throw new GenericFileException('file_put_contents failed');
+            }
+            $this->fileInfo = null;
+            $this->sendHooks(['postWrite']);
+        } else {
+            throw new NotPermittedException();
+        }
+    }
 
-	/**
-	 * @param string $mode
-	 * @return resource|false
-	 * @throws NotPermittedException
-	 * @throws LockedException
-	 */
-	public function fopen($mode) {
-		$preHooks = [];
-		$postHooks = [];
-		$requiredPermissions = \OCP\Constants::PERMISSION_READ;
-		switch ($mode) {
-			case 'r+':
-			case 'rb+':
-			case 'w+':
-			case 'wb+':
-			case 'x+':
-			case 'xb+':
-			case 'a+':
-			case 'ab+':
-			case 'w':
-			case 'wb':
-			case 'x':
-			case 'xb':
-			case 'a':
-			case 'ab':
-				$preHooks[] = 'preWrite';
-				$postHooks[] = 'postWrite';
-				$requiredPermissions |= \OCP\Constants::PERMISSION_UPDATE;
-				break;
-		}
+    /**
+     * @param string $mode
+     * @return resource|false
+     * @throws NotPermittedException
+     * @throws LockedException
+     */
+    public function fopen($mode) {
+        $preHooks = [];
+        $postHooks = [];
+        $requiredPermissions = \OCP\Constants::PERMISSION_READ;
+        switch ($mode) {
+            case 'r+':
+            case 'rb+':
+            case 'w+':
+            case 'wb+':
+            case 'x+':
+            case 'xb+':
+            case 'a+':
+            case 'ab+':
+            case 'w':
+            case 'wb':
+            case 'x':
+            case 'xb':
+            case 'a':
+            case 'ab':
+                $preHooks[] = 'preWrite';
+                $postHooks[] = 'postWrite';
+                $requiredPermissions |= \OCP\Constants::PERMISSION_UPDATE;
+                break;
+        }
 
-		if ($this->checkPermissions($requiredPermissions)) {
-			$this->sendHooks($preHooks);
-			$result = $this->view->fopen($this->path, $mode);
-			$this->sendHooks($postHooks);
-			return $result;
-		} else {
-			throw new NotPermittedException();
-		}
-	}
+        if ($this->checkPermissions($requiredPermissions)) {
+            $this->sendHooks($preHooks);
+            $result = $this->view->fopen($this->path, $mode);
+            $this->sendHooks($postHooks);
+            return $result;
+        } else {
+            throw new NotPermittedException();
+        }
+    }
 
-	/**
-	 * @throws NotPermittedException
-	 * @throws \OCP\Files\InvalidPathException
-	 * @throws \OCP\Files\NotFoundException
-	 */
-	public function delete() {
-		if ($this->checkPermissions(\OCP\Constants::PERMISSION_DELETE)) {
-			$this->sendHooks(['preDelete']);
-			$fileInfo = $this->getFileInfo();
-			$this->view->unlink($this->path);
-			$nonExisting = new NonExistingFile($this->root, $this->view, $this->path, $fileInfo);
-			$this->sendHooks(['postDelete'], [$nonExisting]);
-			$this->fileInfo = null;
-		} else {
-			throw new NotPermittedException();
-		}
-	}
+    /**
+     * @throws NotPermittedException
+     * @throws \OCP\Files\InvalidPathException
+     * @throws \OCP\Files\NotFoundException
+     */
+    public function delete() {
+        if ($this->checkPermissions(\OCP\Constants::PERMISSION_DELETE)) {
+            $this->sendHooks(['preDelete']);
+            $fileInfo = $this->getFileInfo();
+            $this->view->unlink($this->path);
+            $nonExisting = new NonExistingFile($this->root, $this->view, $this->path, $fileInfo);
+            $this->sendHooks(['postDelete'], [$nonExisting]);
+            $this->fileInfo = null;
+        } else {
+            throw new NotPermittedException();
+        }
+    }
 
-	/**
-	 * @param string $type
-	 * @param bool $raw
-	 * @return string
-	 */
-	public function hash($type, $raw = false) {
-		return $this->view->hash($type, $this->path, $raw);
-	}
+    /**
+     * @param string $type
+     * @param bool $raw
+     * @return string
+     */
+    public function hash($type, $raw = false) {
+        return $this->view->hash($type, $this->path, $raw);
+    }
 
-	/**
-	 * @inheritdoc
-	 */
-	public function getChecksum() {
-		return $this->getFileInfo()->getChecksum();
-	}
+    /**
+     * @inheritdoc
+     */
+    public function getChecksum() {
+        return $this->getFileInfo()->getChecksum();
+    }
 
-	public function getExtension(): string {
-		return $this->getFileInfo()->getExtension();
-	}
+    public function getExtension(): string {
+        return $this->getFileInfo()->getExtension();
+    }
 }

lib/private/Files/Storage/Wrapper/Encoding.php

Indentation +502 added lines, -502 removed lines

@@ -40,506 +40,506 @@
  * the actual given name and then try its NFD form.
  */
 class Encoding extends Wrapper {
-	/**
-	 * @var ICache
-	 */
-	private $namesCache;
-
-	/**
-	 * @param array $parameters
-	 */
-	public function __construct($parameters) {
-		$this->storage = $parameters['storage'];
-		$this->namesCache = new CappedMemoryCache();
-	}
-
-	/**
-	 * Returns whether the given string is only made of ASCII characters
-	 *
-	 * @param string $str string
-	 *
-	 * @return bool true if the string is all ASCII, false otherwise
-	 */
-	private function isAscii($str) {
-		return !preg_match('/[\\x80-\\xff]+/', $str);
-	}
-
-	/**
-	 * Checks whether the given path exists in NFC or NFD form after checking
-	 * each form for each path section and returns the correct form.
-	 * If no existing path found, returns the path as it was given.
-	 *
-	 * @param string $fullPath path to check
-	 *
-	 * @return string original or converted path
-	 */
-	private function findPathToUse($fullPath) {
-		$cachedPath = $this->namesCache[$fullPath];
-		if ($cachedPath !== null) {
-			return $cachedPath;
-		}
-
-		$sections = explode('/', $fullPath);
-		$path = '';
-		foreach ($sections as $section) {
-			$convertedPath = $this->findPathToUseLastSection($path, $section);
-			if ($convertedPath === null) {
-				// no point in continuing if the section was not found, use original path
-				return $fullPath;
-			}
-			$path = $convertedPath . '/';
-		}
-		$path = rtrim($path, '/');
-		return $path;
-	}
-
-	/**
-	 * Checks whether the last path section of the given path exists in NFC or NFD form
-	 * and returns the correct form. If no existing path found, returns null.
-	 *
-	 * @param string $basePath base path to check
-	 * @param string $lastSection last section of the path to check for NFD/NFC variations
-	 *
-	 * @return string|null original or converted path, or null if none of the forms was found
-	 */
-	private function findPathToUseLastSection($basePath, $lastSection) {
-		$fullPath = $basePath . $lastSection;
-		if ($lastSection === '' || $this->isAscii($lastSection) || $this->storage->file_exists($fullPath)) {
-			$this->namesCache[$fullPath] = $fullPath;
-			return $fullPath;
-		}
-
-		// swap encoding
-		if (\Normalizer::isNormalized($lastSection, \Normalizer::FORM_C)) {
-			$otherFormPath = \Normalizer::normalize($lastSection, \Normalizer::FORM_D);
-		} else {
-			$otherFormPath = \Normalizer::normalize($lastSection, \Normalizer::FORM_C);
-		}
-		$otherFullPath = $basePath . $otherFormPath;
-		if ($this->storage->file_exists($otherFullPath)) {
-			$this->namesCache[$fullPath] = $otherFullPath;
-			return $otherFullPath;
-		}
-
-		// return original path, file did not exist at all
-		$this->namesCache[$fullPath] = $fullPath;
-		return null;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.mkdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function mkdir($path) {
-		// note: no conversion here, method should not be called with non-NFC names!
-		$result = $this->storage->mkdir($path);
-		if ($result) {
-			$this->namesCache[$path] = $path;
-		}
-		return $result;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function rmdir($path) {
-		$result = $this->storage->rmdir($this->findPathToUse($path));
-		if ($result) {
-			unset($this->namesCache[$path]);
-		}
-		return $result;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.opendir.php
-	 *
-	 * @param string $path
-	 * @return resource|false
-	 */
-	public function opendir($path) {
-		$handle = $this->storage->opendir($this->findPathToUse($path));
-		return EncodingDirectoryWrapper::wrap($handle);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_dir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_dir($path) {
-		return $this->storage->is_dir($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_file.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_file($path) {
-		return $this->storage->is_file($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 */
-	public function stat($path) {
-		return $this->storage->stat($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filetype.php
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 */
-	public function filetype($path) {
-		return $this->storage->filetype($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 */
-	public function filesize($path): false|int|float {
-		return $this->storage->filesize($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file can be created in $path
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isCreatable($path) {
-		return $this->storage->isCreatable($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isReadable($path) {
-		return $this->storage->isReadable($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file can be written to
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isUpdatable($path) {
-		return $this->storage->isUpdatable($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file can be deleted
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isDeletable($path) {
-		return $this->storage->isDeletable($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file can be shared
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isSharable($path) {
-		return $this->storage->isSharable($this->findPathToUse($path));
-	}
-
-	/**
-	 * get the full permissions of a path.
-	 * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	public function getPermissions($path) {
-		return $this->storage->getPermissions($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_exists.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function file_exists($path) {
-		return $this->storage->file_exists($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filemtime.php
-	 *
-	 * @param string $path
-	 * @return int|bool
-	 */
-	public function filemtime($path) {
-		return $this->storage->filemtime($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function file_get_contents($path) {
-		return $this->storage->file_get_contents($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|float|false
-	 */
-	public function file_put_contents($path, $data) {
-		return $this->storage->file_put_contents($this->findPathToUse($path), $data);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function unlink($path) {
-		$result = $this->storage->unlink($this->findPathToUse($path));
-		if ($result) {
-			unset($this->namesCache[$path]);
-		}
-		return $result;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function rename($source, $target) {
-		// second name always NFC
-		return $this->storage->rename($this->findPathToUse($source), $this->findPathToUse($target));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function copy($source, $target) {
-		return $this->storage->copy($this->findPathToUse($source), $this->findPathToUse($target));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 */
-	public function fopen($path, $mode) {
-		$result = $this->storage->fopen($this->findPathToUse($path), $mode);
-		if ($result && $mode !== 'r' && $mode !== 'rb') {
-			unset($this->namesCache[$path]);
-		}
-		return $result;
-	}
-
-	/**
-	 * get the mimetype for a file or folder
-	 * The mimetype for a folder is required to be "httpd/unix-directory"
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 */
-	public function getMimeType($path) {
-		return $this->storage->getMimeType($this->findPathToUse($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.hash.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string|bool
-	 */
-	public function hash($type, $path, $raw = false) {
-		return $this->storage->hash($type, $this->findPathToUse($path), $raw);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.free_space.php
-	 *
-	 * @param string $path
-	 * @return int|float|bool
-	 */
-	public function free_space($path) {
-		return $this->storage->free_space($this->findPathToUse($path));
-	}
-
-	/**
-	 * search for occurrences of $query in file names
-	 *
-	 * @param string $query
-	 * @return array|bool
-	 */
-	public function search($query) {
-		return $this->storage->search($query);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.touch.php
-	 * If the backend does not support the operation, false should be returned
-	 *
-	 * @param string $path
-	 * @param int $mtime
-	 * @return bool
-	 */
-	public function touch($path, $mtime = null) {
-		return $this->storage->touch($this->findPathToUse($path), $mtime);
-	}
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getLocalFile($path) {
-		return $this->storage->getLocalFile($this->findPathToUse($path));
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 *
-	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
-	 * returning true for other changes in the folder is optional
-	 */
-	public function hasUpdated($path, $time) {
-		return $this->storage->hasUpdated($this->findPathToUse($path), $time);
-	}
-
-	/**
-	 * get a cache instance for the storage
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the cache
-	 * @return \OC\Files\Cache\Cache
-	 */
-	public function getCache($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->storage->getCache($this->findPathToUse($path), $storage);
-	}
-
-	/**
-	 * get a scanner instance for the storage
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
-	 * @return \OC\Files\Cache\Scanner
-	 */
-	public function getScanner($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->storage->getScanner($this->findPathToUse($path), $storage);
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getETag($path) {
-		return $this->storage->getETag($this->findPathToUse($path));
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			return $this->copy($sourceInternalPath, $this->findPathToUse($targetInternalPath));
-		}
-
-		$result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $this->findPathToUse($targetInternalPath));
-		if ($result) {
-			unset($this->namesCache[$targetInternalPath]);
-		}
-		return $result;
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			$result = $this->rename($sourceInternalPath, $this->findPathToUse($targetInternalPath));
-			if ($result) {
-				unset($this->namesCache[$sourceInternalPath]);
-				unset($this->namesCache[$targetInternalPath]);
-			}
-			return $result;
-		}
-
-		$result = $this->storage->moveFromStorage($sourceStorage, $sourceInternalPath, $this->findPathToUse($targetInternalPath));
-		if ($result) {
-			unset($this->namesCache[$sourceInternalPath]);
-			unset($this->namesCache[$targetInternalPath]);
-		}
-		return $result;
-	}
-
-	public function getMetaData($path) {
-		$entry = $this->storage->getMetaData($this->findPathToUse($path));
-		$entry['name'] = trim(Filesystem::normalizePath($entry['name']), '/');
-		return $entry;
-	}
-
-	public function getDirectoryContent($directory): \Traversable {
-		$entries = $this->storage->getDirectoryContent($this->findPathToUse($directory));
-		foreach ($entries as $entry) {
-			$entry['name'] = trim(Filesystem::normalizePath($entry['name']), '/');
-			yield $entry;
-		}
-	}
+    /**
+     * @var ICache
+     */
+    private $namesCache;
+
+    /**
+     * @param array $parameters
+     */
+    public function __construct($parameters) {
+        $this->storage = $parameters['storage'];
+        $this->namesCache = new CappedMemoryCache();
+    }
+
+    /**
+     * Returns whether the given string is only made of ASCII characters
+     *
+     * @param string $str string
+     *
+     * @return bool true if the string is all ASCII, false otherwise
+     */
+    private function isAscii($str) {
+        return !preg_match('/[\\x80-\\xff]+/', $str);
+    }
+
+    /**
+     * Checks whether the given path exists in NFC or NFD form after checking
+     * each form for each path section and returns the correct form.
+     * If no existing path found, returns the path as it was given.
+     *
+     * @param string $fullPath path to check
+     *
+     * @return string original or converted path
+     */
+    private function findPathToUse($fullPath) {
+        $cachedPath = $this->namesCache[$fullPath];
+        if ($cachedPath !== null) {
+            return $cachedPath;
+        }
+
+        $sections = explode('/', $fullPath);
+        $path = '';
+        foreach ($sections as $section) {
+            $convertedPath = $this->findPathToUseLastSection($path, $section);
+            if ($convertedPath === null) {
+                // no point in continuing if the section was not found, use original path
+                return $fullPath;
+            }
+            $path = $convertedPath . '/';
+        }
+        $path = rtrim($path, '/');
+        return $path;
+    }
+
+    /**
+     * Checks whether the last path section of the given path exists in NFC or NFD form
+     * and returns the correct form. If no existing path found, returns null.
+     *
+     * @param string $basePath base path to check
+     * @param string $lastSection last section of the path to check for NFD/NFC variations
+     *
+     * @return string|null original or converted path, or null if none of the forms was found
+     */
+    private function findPathToUseLastSection($basePath, $lastSection) {
+        $fullPath = $basePath . $lastSection;
+        if ($lastSection === '' || $this->isAscii($lastSection) || $this->storage->file_exists($fullPath)) {
+            $this->namesCache[$fullPath] = $fullPath;
+            return $fullPath;
+        }
+
+        // swap encoding
+        if (\Normalizer::isNormalized($lastSection, \Normalizer::FORM_C)) {
+            $otherFormPath = \Normalizer::normalize($lastSection, \Normalizer::FORM_D);
+        } else {
+            $otherFormPath = \Normalizer::normalize($lastSection, \Normalizer::FORM_C);
+        }
+        $otherFullPath = $basePath . $otherFormPath;
+        if ($this->storage->file_exists($otherFullPath)) {
+            $this->namesCache[$fullPath] = $otherFullPath;
+            return $otherFullPath;
+        }
+
+        // return original path, file did not exist at all
+        $this->namesCache[$fullPath] = $fullPath;
+        return null;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.mkdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function mkdir($path) {
+        // note: no conversion here, method should not be called with non-NFC names!
+        $result = $this->storage->mkdir($path);
+        if ($result) {
+            $this->namesCache[$path] = $path;
+        }
+        return $result;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function rmdir($path) {
+        $result = $this->storage->rmdir($this->findPathToUse($path));
+        if ($result) {
+            unset($this->namesCache[$path]);
+        }
+        return $result;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.opendir.php
+     *
+     * @param string $path
+     * @return resource|false
+     */
+    public function opendir($path) {
+        $handle = $this->storage->opendir($this->findPathToUse($path));
+        return EncodingDirectoryWrapper::wrap($handle);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_dir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_dir($path) {
+        return $this->storage->is_dir($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_file.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_file($path) {
+        return $this->storage->is_file($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array|bool
+     */
+    public function stat($path) {
+        return $this->storage->stat($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filetype.php
+     *
+     * @param string $path
+     * @return string|bool
+     */
+    public function filetype($path) {
+        return $this->storage->filetype($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     */
+    public function filesize($path): false|int|float {
+        return $this->storage->filesize($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file can be created in $path
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isCreatable($path) {
+        return $this->storage->isCreatable($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isReadable($path) {
+        return $this->storage->isReadable($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file can be written to
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isUpdatable($path) {
+        return $this->storage->isUpdatable($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file can be deleted
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isDeletable($path) {
+        return $this->storage->isDeletable($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file can be shared
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isSharable($path) {
+        return $this->storage->isSharable($this->findPathToUse($path));
+    }
+
+    /**
+     * get the full permissions of a path.
+     * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
+     *
+     * @param string $path
+     * @return int
+     */
+    public function getPermissions($path) {
+        return $this->storage->getPermissions($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_exists.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function file_exists($path) {
+        return $this->storage->file_exists($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filemtime.php
+     *
+     * @param string $path
+     * @return int|bool
+     */
+    public function filemtime($path) {
+        return $this->storage->filemtime($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function file_get_contents($path) {
+        return $this->storage->file_get_contents($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|float|false
+     */
+    public function file_put_contents($path, $data) {
+        return $this->storage->file_put_contents($this->findPathToUse($path), $data);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function unlink($path) {
+        $result = $this->storage->unlink($this->findPathToUse($path));
+        if ($result) {
+            unset($this->namesCache[$path]);
+        }
+        return $result;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function rename($source, $target) {
+        // second name always NFC
+        return $this->storage->rename($this->findPathToUse($source), $this->findPathToUse($target));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function copy($source, $target) {
+        return $this->storage->copy($this->findPathToUse($source), $this->findPathToUse($target));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     */
+    public function fopen($path, $mode) {
+        $result = $this->storage->fopen($this->findPathToUse($path), $mode);
+        if ($result && $mode !== 'r' && $mode !== 'rb') {
+            unset($this->namesCache[$path]);
+        }
+        return $result;
+    }
+
+    /**
+     * get the mimetype for a file or folder
+     * The mimetype for a folder is required to be "httpd/unix-directory"
+     *
+     * @param string $path
+     * @return string|bool
+     */
+    public function getMimeType($path) {
+        return $this->storage->getMimeType($this->findPathToUse($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.hash.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string|bool
+     */
+    public function hash($type, $path, $raw = false) {
+        return $this->storage->hash($type, $this->findPathToUse($path), $raw);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.free_space.php
+     *
+     * @param string $path
+     * @return int|float|bool
+     */
+    public function free_space($path) {
+        return $this->storage->free_space($this->findPathToUse($path));
+    }
+
+    /**
+     * search for occurrences of $query in file names
+     *
+     * @param string $query
+     * @return array|bool
+     */
+    public function search($query) {
+        return $this->storage->search($query);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.touch.php
+     * If the backend does not support the operation, false should be returned
+     *
+     * @param string $path
+     * @param int $mtime
+     * @return bool
+     */
+    public function touch($path, $mtime = null) {
+        return $this->storage->touch($this->findPathToUse($path), $mtime);
+    }
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getLocalFile($path) {
+        return $this->storage->getLocalFile($this->findPathToUse($path));
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     *
+     * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+     * returning true for other changes in the folder is optional
+     */
+    public function hasUpdated($path, $time) {
+        return $this->storage->hasUpdated($this->findPathToUse($path), $time);
+    }
+
+    /**
+     * get a cache instance for the storage
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the cache
+     * @return \OC\Files\Cache\Cache
+     */
+    public function getCache($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->storage->getCache($this->findPathToUse($path), $storage);
+    }
+
+    /**
+     * get a scanner instance for the storage
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
+     * @return \OC\Files\Cache\Scanner
+     */
+    public function getScanner($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->storage->getScanner($this->findPathToUse($path), $storage);
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getETag($path) {
+        return $this->storage->getETag($this->findPathToUse($path));
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            return $this->copy($sourceInternalPath, $this->findPathToUse($targetInternalPath));
+        }
+
+        $result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $this->findPathToUse($targetInternalPath));
+        if ($result) {
+            unset($this->namesCache[$targetInternalPath]);
+        }
+        return $result;
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            $result = $this->rename($sourceInternalPath, $this->findPathToUse($targetInternalPath));
+            if ($result) {
+                unset($this->namesCache[$sourceInternalPath]);
+                unset($this->namesCache[$targetInternalPath]);
+            }
+            return $result;
+        }
+
+        $result = $this->storage->moveFromStorage($sourceStorage, $sourceInternalPath, $this->findPathToUse($targetInternalPath));
+        if ($result) {
+            unset($this->namesCache[$sourceInternalPath]);
+            unset($this->namesCache[$targetInternalPath]);
+        }
+        return $result;
+    }
+
+    public function getMetaData($path) {
+        $entry = $this->storage->getMetaData($this->findPathToUse($path));
+        $entry['name'] = trim(Filesystem::normalizePath($entry['name']), '/');
+        return $entry;
+    }
+
+    public function getDirectoryContent($directory): \Traversable {
+        $entries = $this->storage->getDirectoryContent($this->findPathToUse($directory));
+        foreach ($entries as $entry) {
+            $entry['name'] = trim(Filesystem::normalizePath($entry['name']), '/');
+            yield $entry;
+        }
+    }
 }

lib/private/Files/Storage/Wrapper/Jail.php

Indentation +493 added lines, -493 removed lines

@@ -41,497 +41,497 @@
  * This restricts access to a subfolder of the wrapped storage with the subfolder becoming the root folder new storage
  */
 class Jail extends Wrapper {
-	/**
-	 * @var string
-	 */
-	protected $rootPath;
-
-	/**
-	 * @param array $arguments ['storage' => $storage, 'root' => $root]
-	 *
-	 * $storage: The storage that will be wrapper
-	 * $root: The folder in the wrapped storage that will become the root folder of the wrapped storage
-	 */
-	public function __construct($arguments) {
-		parent::__construct($arguments);
-		$this->rootPath = $arguments['root'];
-	}
-
-	public function getUnjailedPath($path) {
-		return trim(Filesystem::normalizePath($this->rootPath . '/' . $path), '/');
-	}
-
-	/**
-	 * This is separate from Wrapper::getWrapperStorage so we can get the jailed storage consistently even if the jail is inside another wrapper
-	 */
-	public function getUnjailedStorage() {
-		return $this->storage;
-	}
-
-
-	public function getJailedPath($path) {
-		$root = rtrim($this->rootPath, '/') . '/';
-
-		if ($path !== $this->rootPath && strpos($path, $root) !== 0) {
-			return null;
-		} else {
-			$path = substr($path, strlen($this->rootPath));
-			return trim($path, '/');
-		}
-	}
-
-	public function getId() {
-		return parent::getId();
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.mkdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function mkdir($path) {
-		return $this->getWrapperStorage()->mkdir($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function rmdir($path) {
-		return $this->getWrapperStorage()->rmdir($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.opendir.php
-	 *
-	 * @param string $path
-	 * @return resource|false
-	 */
-	public function opendir($path) {
-		return $this->getWrapperStorage()->opendir($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_dir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_dir($path) {
-		return $this->getWrapperStorage()->is_dir($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_file.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_file($path) {
-		return $this->getWrapperStorage()->is_file($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 */
-	public function stat($path) {
-		return $this->getWrapperStorage()->stat($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filetype.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function filetype($path) {
-		return $this->getWrapperStorage()->filetype($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 */
-	public function filesize($path): false|int|float {
-		return $this->getWrapperStorage()->filesize($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file can be created in $path
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isCreatable($path) {
-		return $this->getWrapperStorage()->isCreatable($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isReadable($path) {
-		return $this->getWrapperStorage()->isReadable($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file can be written to
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isUpdatable($path) {
-		return $this->getWrapperStorage()->isUpdatable($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file can be deleted
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isDeletable($path) {
-		return $this->getWrapperStorage()->isDeletable($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file can be shared
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isSharable($path) {
-		return $this->getWrapperStorage()->isSharable($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * get the full permissions of a path.
-	 * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	public function getPermissions($path) {
-		return $this->getWrapperStorage()->getPermissions($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_exists.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function file_exists($path) {
-		return $this->getWrapperStorage()->file_exists($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filemtime.php
-	 *
-	 * @param string $path
-	 * @return int|bool
-	 */
-	public function filemtime($path) {
-		return $this->getWrapperStorage()->filemtime($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function file_get_contents($path) {
-		return $this->getWrapperStorage()->file_get_contents($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|float|false
-	 */
-	public function file_put_contents($path, $data) {
-		return $this->getWrapperStorage()->file_put_contents($this->getUnjailedPath($path), $data);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function unlink($path) {
-		return $this->getWrapperStorage()->unlink($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function rename($source, $target) {
-		return $this->getWrapperStorage()->rename($this->getUnjailedPath($source), $this->getUnjailedPath($target));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function copy($source, $target) {
-		return $this->getWrapperStorage()->copy($this->getUnjailedPath($source), $this->getUnjailedPath($target));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 */
-	public function fopen($path, $mode) {
-		return $this->getWrapperStorage()->fopen($this->getUnjailedPath($path), $mode);
-	}
-
-	/**
-	 * get the mimetype for a file or folder
-	 * The mimetype for a folder is required to be "httpd/unix-directory"
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 */
-	public function getMimeType($path) {
-		return $this->getWrapperStorage()->getMimeType($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.hash.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string|bool
-	 */
-	public function hash($type, $path, $raw = false) {
-		return $this->getWrapperStorage()->hash($type, $this->getUnjailedPath($path), $raw);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.free_space.php
-	 *
-	 * @param string $path
-	 * @return int|float|bool
-	 */
-	public function free_space($path) {
-		return $this->getWrapperStorage()->free_space($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * search for occurrences of $query in file names
-	 *
-	 * @param string $query
-	 * @return array|bool
-	 */
-	public function search($query) {
-		return $this->getWrapperStorage()->search($query);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.touch.php
-	 * If the backend does not support the operation, false should be returned
-	 *
-	 * @param string $path
-	 * @param int $mtime
-	 * @return bool
-	 */
-	public function touch($path, $mtime = null) {
-		return $this->getWrapperStorage()->touch($this->getUnjailedPath($path), $mtime);
-	}
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getLocalFile($path) {
-		return $this->getWrapperStorage()->getLocalFile($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 *
-	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
-	 * returning true for other changes in the folder is optional
-	 */
-	public function hasUpdated($path, $time) {
-		return $this->getWrapperStorage()->hasUpdated($this->getUnjailedPath($path), $time);
-	}
-
-	/**
-	 * get a cache instance for the storage
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage|null (optional) the storage to pass to the cache
-	 * @return \OC\Files\Cache\Cache
-	 */
-	public function getCache($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this->getWrapperStorage();
-		}
-		$sourceCache = $this->getWrapperStorage()->getCache($this->getUnjailedPath($path), $storage);
-		return new CacheJail($sourceCache, $this->rootPath);
-	}
-
-	/**
-	 * get the user id of the owner of a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public function getOwner($path) {
-		return $this->getWrapperStorage()->getOwner($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * get a watcher instance for the cache
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the watcher
-	 * @return \OC\Files\Cache\Watcher
-	 */
-	public function getWatcher($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getWatcher($this->getUnjailedPath($path), $storage);
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getETag($path) {
-		return $this->getWrapperStorage()->getETag($this->getUnjailedPath($path));
-	}
-
-	public function getMetaData($path) {
-		return $this->getWrapperStorage()->getMetaData($this->getUnjailedPath($path));
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 * @throws \OCP\Lock\LockedException
-	 */
-	public function acquireLock($path, $type, ILockingProvider $provider) {
-		$this->getWrapperStorage()->acquireLock($this->getUnjailedPath($path), $type, $provider);
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 */
-	public function releaseLock($path, $type, ILockingProvider $provider) {
-		$this->getWrapperStorage()->releaseLock($this->getUnjailedPath($path), $type, $provider);
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 */
-	public function changeLock($path, $type, ILockingProvider $provider) {
-		$this->getWrapperStorage()->changeLock($this->getUnjailedPath($path), $type, $provider);
-	}
-
-	/**
-	 * Resolve the path for the source of the share
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	public function resolvePath($path) {
-		return [$this->getWrapperStorage(), $this->getUnjailedPath($path)];
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			return $this->copy($sourceInternalPath, $targetInternalPath);
-		}
-		return $this->getWrapperStorage()->copyFromStorage($sourceStorage, $sourceInternalPath, $this->getUnjailedPath($targetInternalPath));
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			return $this->rename($sourceInternalPath, $targetInternalPath);
-		}
-		return $this->getWrapperStorage()->moveFromStorage($sourceStorage, $sourceInternalPath, $this->getUnjailedPath($targetInternalPath));
-	}
-
-	public function getPropagator($storage = null) {
-		if (isset($this->propagator)) {
-			return $this->propagator;
-		}
-
-		if (!$storage) {
-			$storage = $this;
-		}
-		$this->propagator = new JailPropagator($storage, \OC::$server->getDatabaseConnection());
-		return $this->propagator;
-	}
-
-	public function writeStream(string $path, $stream, int $size = null): int {
-		$storage = $this->getWrapperStorage();
-		if ($storage->instanceOfStorage(IWriteStreamStorage::class)) {
-			/** @var IWriteStreamStorage $storage */
-			return $storage->writeStream($this->getUnjailedPath($path), $stream, $size);
-		} else {
-			$target = $this->fopen($path, 'w');
-			[$count, $result] = \OC_Helper::streamCopy($stream, $target);
-			fclose($stream);
-			fclose($target);
-			return $count;
-		}
-	}
-
-	public function getDirectoryContent($directory): \Traversable {
-		return $this->getWrapperStorage()->getDirectoryContent($this->getUnjailedPath($directory));
-	}
+    /**
+     * @var string
+     */
+    protected $rootPath;
+
+    /**
+     * @param array $arguments ['storage' => $storage, 'root' => $root]
+     *
+     * $storage: The storage that will be wrapper
+     * $root: The folder in the wrapped storage that will become the root folder of the wrapped storage
+     */
+    public function __construct($arguments) {
+        parent::__construct($arguments);
+        $this->rootPath = $arguments['root'];
+    }
+
+    public function getUnjailedPath($path) {
+        return trim(Filesystem::normalizePath($this->rootPath . '/' . $path), '/');
+    }
+
+    /**
+     * This is separate from Wrapper::getWrapperStorage so we can get the jailed storage consistently even if the jail is inside another wrapper
+     */
+    public function getUnjailedStorage() {
+        return $this->storage;
+    }
+
+
+    public function getJailedPath($path) {
+        $root = rtrim($this->rootPath, '/') . '/';
+
+        if ($path !== $this->rootPath && strpos($path, $root) !== 0) {
+            return null;
+        } else {
+            $path = substr($path, strlen($this->rootPath));
+            return trim($path, '/');
+        }
+    }
+
+    public function getId() {
+        return parent::getId();
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.mkdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function mkdir($path) {
+        return $this->getWrapperStorage()->mkdir($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function rmdir($path) {
+        return $this->getWrapperStorage()->rmdir($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.opendir.php
+     *
+     * @param string $path
+     * @return resource|false
+     */
+    public function opendir($path) {
+        return $this->getWrapperStorage()->opendir($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_dir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_dir($path) {
+        return $this->getWrapperStorage()->is_dir($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_file.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_file($path) {
+        return $this->getWrapperStorage()->is_file($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array|bool
+     */
+    public function stat($path) {
+        return $this->getWrapperStorage()->stat($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filetype.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function filetype($path) {
+        return $this->getWrapperStorage()->filetype($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     */
+    public function filesize($path): false|int|float {
+        return $this->getWrapperStorage()->filesize($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file can be created in $path
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isCreatable($path) {
+        return $this->getWrapperStorage()->isCreatable($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isReadable($path) {
+        return $this->getWrapperStorage()->isReadable($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file can be written to
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isUpdatable($path) {
+        return $this->getWrapperStorage()->isUpdatable($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file can be deleted
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isDeletable($path) {
+        return $this->getWrapperStorage()->isDeletable($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file can be shared
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isSharable($path) {
+        return $this->getWrapperStorage()->isSharable($this->getUnjailedPath($path));
+    }
+
+    /**
+     * get the full permissions of a path.
+     * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
+     *
+     * @param string $path
+     * @return int
+     */
+    public function getPermissions($path) {
+        return $this->getWrapperStorage()->getPermissions($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_exists.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function file_exists($path) {
+        return $this->getWrapperStorage()->file_exists($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filemtime.php
+     *
+     * @param string $path
+     * @return int|bool
+     */
+    public function filemtime($path) {
+        return $this->getWrapperStorage()->filemtime($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function file_get_contents($path) {
+        return $this->getWrapperStorage()->file_get_contents($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|float|false
+     */
+    public function file_put_contents($path, $data) {
+        return $this->getWrapperStorage()->file_put_contents($this->getUnjailedPath($path), $data);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function unlink($path) {
+        return $this->getWrapperStorage()->unlink($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function rename($source, $target) {
+        return $this->getWrapperStorage()->rename($this->getUnjailedPath($source), $this->getUnjailedPath($target));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function copy($source, $target) {
+        return $this->getWrapperStorage()->copy($this->getUnjailedPath($source), $this->getUnjailedPath($target));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     */
+    public function fopen($path, $mode) {
+        return $this->getWrapperStorage()->fopen($this->getUnjailedPath($path), $mode);
+    }
+
+    /**
+     * get the mimetype for a file or folder
+     * The mimetype for a folder is required to be "httpd/unix-directory"
+     *
+     * @param string $path
+     * @return string|bool
+     */
+    public function getMimeType($path) {
+        return $this->getWrapperStorage()->getMimeType($this->getUnjailedPath($path));
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.hash.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string|bool
+     */
+    public function hash($type, $path, $raw = false) {
+        return $this->getWrapperStorage()->hash($type, $this->getUnjailedPath($path), $raw);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.free_space.php
+     *
+     * @param string $path
+     * @return int|float|bool
+     */
+    public function free_space($path) {
+        return $this->getWrapperStorage()->free_space($this->getUnjailedPath($path));
+    }
+
+    /**
+     * search for occurrences of $query in file names
+     *
+     * @param string $query
+     * @return array|bool
+     */
+    public function search($query) {
+        return $this->getWrapperStorage()->search($query);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.touch.php
+     * If the backend does not support the operation, false should be returned
+     *
+     * @param string $path
+     * @param int $mtime
+     * @return bool
+     */
+    public function touch($path, $mtime = null) {
+        return $this->getWrapperStorage()->touch($this->getUnjailedPath($path), $mtime);
+    }
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getLocalFile($path) {
+        return $this->getWrapperStorage()->getLocalFile($this->getUnjailedPath($path));
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     *
+     * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+     * returning true for other changes in the folder is optional
+     */
+    public function hasUpdated($path, $time) {
+        return $this->getWrapperStorage()->hasUpdated($this->getUnjailedPath($path), $time);
+    }
+
+    /**
+     * get a cache instance for the storage
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage|null (optional) the storage to pass to the cache
+     * @return \OC\Files\Cache\Cache
+     */
+    public function getCache($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this->getWrapperStorage();
+        }
+        $sourceCache = $this->getWrapperStorage()->getCache($this->getUnjailedPath($path), $storage);
+        return new CacheJail($sourceCache, $this->rootPath);
+    }
+
+    /**
+     * get the user id of the owner of a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    public function getOwner($path) {
+        return $this->getWrapperStorage()->getOwner($this->getUnjailedPath($path));
+    }
+
+    /**
+     * get a watcher instance for the cache
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the watcher
+     * @return \OC\Files\Cache\Watcher
+     */
+    public function getWatcher($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getWatcher($this->getUnjailedPath($path), $storage);
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getETag($path) {
+        return $this->getWrapperStorage()->getETag($this->getUnjailedPath($path));
+    }
+
+    public function getMetaData($path) {
+        return $this->getWrapperStorage()->getMetaData($this->getUnjailedPath($path));
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     * @throws \OCP\Lock\LockedException
+     */
+    public function acquireLock($path, $type, ILockingProvider $provider) {
+        $this->getWrapperStorage()->acquireLock($this->getUnjailedPath($path), $type, $provider);
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     */
+    public function releaseLock($path, $type, ILockingProvider $provider) {
+        $this->getWrapperStorage()->releaseLock($this->getUnjailedPath($path), $type, $provider);
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     */
+    public function changeLock($path, $type, ILockingProvider $provider) {
+        $this->getWrapperStorage()->changeLock($this->getUnjailedPath($path), $type, $provider);
+    }
+
+    /**
+     * Resolve the path for the source of the share
+     *
+     * @param string $path
+     * @return array
+     */
+    public function resolvePath($path) {
+        return [$this->getWrapperStorage(), $this->getUnjailedPath($path)];
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            return $this->copy($sourceInternalPath, $targetInternalPath);
+        }
+        return $this->getWrapperStorage()->copyFromStorage($sourceStorage, $sourceInternalPath, $this->getUnjailedPath($targetInternalPath));
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            return $this->rename($sourceInternalPath, $targetInternalPath);
+        }
+        return $this->getWrapperStorage()->moveFromStorage($sourceStorage, $sourceInternalPath, $this->getUnjailedPath($targetInternalPath));
+    }
+
+    public function getPropagator($storage = null) {
+        if (isset($this->propagator)) {
+            return $this->propagator;
+        }
+
+        if (!$storage) {
+            $storage = $this;
+        }
+        $this->propagator = new JailPropagator($storage, \OC::$server->getDatabaseConnection());
+        return $this->propagator;
+    }
+
+    public function writeStream(string $path, $stream, int $size = null): int {
+        $storage = $this->getWrapperStorage();
+        if ($storage->instanceOfStorage(IWriteStreamStorage::class)) {
+            /** @var IWriteStreamStorage $storage */
+            return $storage->writeStream($this->getUnjailedPath($path), $stream, $size);
+        } else {
+            $target = $this->fopen($path, 'w');
+            [$count, $result] = \OC_Helper::streamCopy($stream, $target);
+            fclose($stream);
+            fclose($target);
+            return $count;
+        }
+    }
+
+    public function getDirectoryContent($directory): \Traversable {
+        return $this->getWrapperStorage()->getDirectoryContent($this->getUnjailedPath($directory));
+    }
 }

lib/private/Files/Storage/Wrapper/Encryption.php

Indentation +1039 added lines, -1039 removed lines

@@ -56,1043 +56,1043 @@
 use Psr\Log\LoggerInterface;
 
 class Encryption extends Wrapper {
-	use LocalTempFileTrait;
-
-	/** @var string */
-	private $mountPoint;
-
-	/** @var \OC\Encryption\Util */
-	private $util;
-
-	/** @var \OCP\Encryption\IManager */
-	private $encryptionManager;
-
-	private LoggerInterface $logger;
-
-	/** @var string */
-	private $uid;
-
-	/** @var array */
-	protected $unencryptedSize;
-
-	/** @var \OCP\Encryption\IFile */
-	private $fileHelper;
-
-	/** @var IMountPoint */
-	private $mount;
-
-	/** @var IStorage */
-	private $keyStorage;
-
-	/** @var Update */
-	private $update;
-
-	/** @var Manager */
-	private $mountManager;
-
-	/** @var array remember for which path we execute the repair step to avoid recursions */
-	private $fixUnencryptedSizeOf = [];
-
-	/** @var  ArrayCache */
-	private $arrayCache;
-
-	/** @var CappedMemoryCache<bool> */
-	private CappedMemoryCache $encryptedPaths;
-
-	/**
-	 * @param array $parameters
-	 */
-	public function __construct(
-		$parameters,
-		IManager $encryptionManager = null,
-		Util $util = null,
-		LoggerInterface $logger = null,
-		IFile $fileHelper = null,
-		$uid = null,
-		IStorage $keyStorage = null,
-		Update $update = null,
-		Manager $mountManager = null,
-		ArrayCache $arrayCache = null
-	) {
-		$this->mountPoint = $parameters['mountPoint'];
-		$this->mount = $parameters['mount'];
-		$this->encryptionManager = $encryptionManager;
-		$this->util = $util;
-		$this->logger = $logger;
-		$this->uid = $uid;
-		$this->fileHelper = $fileHelper;
-		$this->keyStorage = $keyStorage;
-		$this->unencryptedSize = [];
-		$this->update = $update;
-		$this->mountManager = $mountManager;
-		$this->arrayCache = $arrayCache;
-		$this->encryptedPaths = new CappedMemoryCache();
-		parent::__construct($parameters);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 */
-	public function filesize($path): false|int|float {
-		$fullPath = $this->getFullPath($path);
-
-		$info = $this->getCache()->get($path);
-		if ($info === false) {
-			return false;
-		}
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$size = $this->unencryptedSize[$fullPath];
-			// update file cache
-			if ($info instanceof ICacheEntry) {
-				$info['encrypted'] = $info['encryptedVersion'];
-			} else {
-				if (!is_array($info)) {
-					$info = [];
-				}
-				$info['encrypted'] = true;
-				$info = new CacheEntry($info);
-			}
-
-			if ($size !== $info->getUnencryptedSize()) {
-				$this->getCache()->update($info->getId(), [
-					'unencrypted_size' => $size
-				]);
-			}
-
-			return $size;
-		}
-
-		if (isset($info['fileid']) && $info['encrypted']) {
-			return $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
-		}
-
-		return $this->storage->filesize($path);
-	}
-
-	/**
-	 * @param string $path
-	 * @param array $data
-	 * @return array
-	 */
-	private function modifyMetaData(string $path, array $data): array {
-		$fullPath = $this->getFullPath($path);
-		$info = $this->getCache()->get($path);
-
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$data['encrypted'] = true;
-			$data['size'] = $this->unencryptedSize[$fullPath];
-			$data['unencrypted_size'] = $data['size'];
-		} else {
-			if (isset($info['fileid']) && $info['encrypted']) {
-				$data['size'] = $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
-				$data['encrypted'] = true;
-				$data['unencrypted_size'] = $data['size'];
-			}
-		}
-
-		if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
-			$data['encryptedVersion'] = $info['encryptedVersion'];
-		}
-
-		return $data;
-	}
-
-	public function getMetaData($path) {
-		$data = $this->storage->getMetaData($path);
-		if (is_null($data)) {
-			return null;
-		}
-		return $this->modifyMetaData($path, $data);
-	}
-
-	public function getDirectoryContent($directory): \Traversable {
-		$parent = rtrim($directory, '/');
-		foreach ($this->getWrapperStorage()->getDirectoryContent($directory) as $data) {
-			yield $this->modifyMetaData($parent . '/' . $data['name'], $data);
-		}
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function file_get_contents($path) {
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		if ($encryptionModule) {
-			$handle = $this->fopen($path, "r");
-			if (!$handle) {
-				return false;
-			}
-			$data = stream_get_contents($handle);
-			fclose($handle);
-			return $data;
-		}
-		return $this->storage->file_get_contents($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|false
-	 */
-	public function file_put_contents($path, $data) {
-		// file put content will always be translated to a stream write
-		$handle = $this->fopen($path, 'w');
-		if (is_resource($handle)) {
-			$written = fwrite($handle, $data);
-			fclose($handle);
-			return $written;
-		}
-
-		return false;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function unlink($path) {
-		$fullPath = $this->getFullPath($path);
-		if ($this->util->isExcluded($fullPath)) {
-			return $this->storage->unlink($path);
-		}
-
-		$encryptionModule = $this->getEncryptionModule($path);
-		if ($encryptionModule) {
-			$this->keyStorage->deleteAllFileKeys($fullPath);
-		}
-
-		return $this->storage->unlink($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function rename($source, $target) {
-		$result = $this->storage->rename($source, $target);
-
-		if ($result &&
-			// versions always use the keys from the original file, so we can skip
-			// this step for versions
-			$this->isVersion($target) === false &&
-			$this->encryptionManager->isEnabled()) {
-			$sourcePath = $this->getFullPath($source);
-			if (!$this->util->isExcluded($sourcePath)) {
-				$targetPath = $this->getFullPath($target);
-				if (isset($this->unencryptedSize[$sourcePath])) {
-					$this->unencryptedSize[$targetPath] = $this->unencryptedSize[$sourcePath];
-				}
-				$this->keyStorage->renameKeys($sourcePath, $targetPath);
-				$module = $this->getEncryptionModule($target);
-				if ($module) {
-					$module->update($targetPath, $this->uid, []);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function rmdir($path) {
-		$result = $this->storage->rmdir($path);
-		$fullPath = $this->getFullPath($path);
-		if ($result &&
-			$this->util->isExcluded($fullPath) === false &&
-			$this->encryptionManager->isEnabled()
-		) {
-			$this->keyStorage->deleteAllFileKeys($fullPath);
-		}
-
-		return $result;
-	}
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isReadable($path) {
-		$isReadable = true;
-
-		$metaData = $this->getMetaData($path);
-		if (
-			!$this->is_dir($path) &&
-			isset($metaData['encrypted']) &&
-			$metaData['encrypted'] === true
-		) {
-			$fullPath = $this->getFullPath($path);
-			$module = $this->getEncryptionModule($path);
-			$isReadable = $module->isReadable($fullPath, $this->uid);
-		}
-
-		return $this->storage->isReadable($path) && $isReadable;
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 */
-	public function copy($source, $target): bool {
-		$sourcePath = $this->getFullPath($source);
-
-		if ($this->util->isExcluded($sourcePath)) {
-			return $this->storage->copy($source, $target);
-		}
-
-		// need to stream copy file by file in case we copy between a encrypted
-		// and a unencrypted storage
-		$this->unlink($target);
-		return $this->copyFromStorage($this, $source, $target);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 * @throws GenericEncryptionException
-	 * @throws ModuleDoesNotExistsException
-	 */
-	public function fopen($path, $mode) {
-		// check if the file is stored in the array cache, this means that we
-		// copy a file over to the versions folder, in this case we don't want to
-		// decrypt it
-		if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
-			$this->arrayCache->remove('encryption_copy_version_' . $path);
-			return $this->storage->fopen($path, $mode);
-		}
-
-		$encryptionEnabled = $this->encryptionManager->isEnabled();
-		$shouldEncrypt = false;
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$signed = isset($header['signed']) && $header['signed'] === 'true';
-		$fullPath = $this->getFullPath($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-
-		if ($this->util->isExcluded($fullPath) === false) {
-			$size = $unencryptedSize = 0;
-			$realFile = $this->util->stripPartialFileExtension($path);
-			$targetExists = $this->is_file($realFile) || $this->file_exists($path);
-			$targetIsEncrypted = false;
-			if ($targetExists) {
-				// in case the file exists we require the explicit module as
-				// specified in the file header - otherwise we need to fail hard to
-				// prevent data loss on client side
-				if (!empty($encryptionModuleId)) {
-					$targetIsEncrypted = true;
-					$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-				}
-
-				if ($this->file_exists($path)) {
-					$size = $this->storage->filesize($path);
-					$unencryptedSize = $this->filesize($path);
-				} else {
-					$size = $unencryptedSize = 0;
-				}
-			}
-
-			try {
-				if (
-					$mode === 'w'
-					|| $mode === 'w+'
-					|| $mode === 'wb'
-					|| $mode === 'wb+'
-				) {
-					// if we update a encrypted file with a un-encrypted one we change the db flag
-					if ($targetIsEncrypted && $encryptionEnabled === false) {
-						$cache = $this->storage->getCache();
-						if ($cache) {
-							$entry = $cache->get($path);
-							$cache->update($entry->getId(), ['encrypted' => 0]);
-						}
-					}
-					if ($encryptionEnabled) {
-						// if $encryptionModuleId is empty, the default module will be used
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
-						$signed = true;
-					}
-				} else {
-					$info = $this->getCache()->get($path);
-					// only get encryption module if we found one in the header
-					// or if file should be encrypted according to the file cache
-					if (!empty($encryptionModuleId)) {
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = true;
-					} elseif (empty($encryptionModuleId) && $info['encrypted'] === true) {
-						// we come from a old installation. No header and/or no module defined
-						// but the file is encrypted. In this case we need to use the
-						// OC_DEFAULT_MODULE to read the file
-						$encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
-						$shouldEncrypt = true;
-						$targetIsEncrypted = true;
-					}
-				}
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->warning('Encryption module "' . $encryptionModuleId . '" not found, file will be stored unencrypted', [
-					'exception' => $e,
-					'app' => 'core',
-				]);
-			}
-
-			// encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
-			if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
-				if (!$targetExists || !$targetIsEncrypted) {
-					$shouldEncrypt = false;
-				}
-			}
-
-			if ($shouldEncrypt === true && $encryptionModule !== null) {
-				$this->encryptedPaths->set($this->util->stripPartialFileExtension($path), true);
-				$headerSize = $this->getHeaderSize($path);
-				$source = $this->storage->fopen($path, $mode);
-				if (!is_resource($source)) {
-					return false;
-				}
-				$handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
-					$this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
-					$size, $unencryptedSize, $headerSize, $signed);
-
-				return $handle;
-			}
-		}
-
-		return $this->storage->fopen($path, $mode);
-	}
-
-
-	/**
-	 * perform some plausibility checks if the the unencrypted size is correct.
-	 * If not, we calculate the correct unencrypted size and return it
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $unencryptedSize size of the unencrypted file
-	 *
-	 * @return int unencrypted size
-	 */
-	protected function verifyUnencryptedSize(string $path, int $unencryptedSize): int {
-		$size = $this->storage->filesize($path);
-		$result = $unencryptedSize;
-
-		if ($unencryptedSize < 0 ||
-			($size > 0 && $unencryptedSize === $size) ||
-			$unencryptedSize > $size
-		) {
-			// check if we already calculate the unencrypted size for the
-			// given path to avoid recursions
-			if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
-				$this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
-				try {
-					$result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
-				} catch (\Exception $e) {
-					$this->logger->error('Couldn\'t re-calculate unencrypted size for ' . $path, ['exception' => $e]);
-				}
-				unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * calculate the unencrypted size
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $size size of the physical file
-	 * @param int $unencryptedSize size of the unencrypted file
-	 *
-	 * @return int calculated unencrypted size
-	 */
-	protected function fixUnencryptedSize(string $path, int $size, int $unencryptedSize): int {
-		$headerSize = $this->getHeaderSize($path);
-		$header = $this->getHeader($path);
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		$stream = $this->storage->fopen($path, 'r');
-
-		// if we couldn't open the file we return the old unencrypted size
-		if (!is_resource($stream)) {
-			$this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
-			return $unencryptedSize;
-		}
-
-		$newUnencryptedSize = 0;
-		$size -= $headerSize;
-		$blockSize = $this->util->getBlockSize();
-
-		// if a header exists we skip it
-		if ($headerSize > 0) {
-			$this->fread_block($stream, $headerSize);
-		}
-
-		// fast path, else the calculation for $lastChunkNr is bogus
-		if ($size === 0) {
-			return 0;
-		}
-
-		$signed = isset($header['signed']) && $header['signed'] === 'true';
-		$unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
-
-		// calculate last chunk nr
-		// next highest is end of chunks, one subtracted is last one
-		// we have to read the last chunk, we can't just calculate it (because of padding etc)
-
-		$lastChunkNr = ceil($size / $blockSize) - 1;
-		// calculate last chunk position
-		$lastChunkPos = ($lastChunkNr * $blockSize);
-		// try to fseek to the last chunk, if it fails we have to read the whole file
-		if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
-			$newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
-		}
-
-		$lastChunkContentEncrypted = '';
-		$count = $blockSize;
-
-		while ($count > 0) {
-			$data = $this->fread_block($stream, $blockSize);
-			$count = strlen($data);
-			$lastChunkContentEncrypted .= $data;
-			if (strlen($lastChunkContentEncrypted) > $blockSize) {
-				$newUnencryptedSize += $unencryptedBlockSize;
-				$lastChunkContentEncrypted = substr($lastChunkContentEncrypted, $blockSize);
-			}
-		}
-
-		fclose($stream);
-
-		// we have to decrypt the last chunk to get it actual size
-		$encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
-		$decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
-		$decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
-
-		// calc the real file size with the size of the last chunk
-		$newUnencryptedSize += strlen($decryptedLastChunk);
-
-		$this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
-
-		// write to cache if applicable
-		$cache = $this->storage->getCache();
-		if ($cache) {
-			$entry = $cache->get($path);
-			$cache->update($entry['fileid'], [
-				'unencrypted_size' => $newUnencryptedSize
-			]);
-		}
-
-		return $newUnencryptedSize;
-	}
-
-	/**
-	 * fread_block
-	 *
-	 * This function is a wrapper around the fread function.  It is based on the
-	 * stream_read_block function from lib/private/Files/Streams/Encryption.php
-	 * It calls stream read until the requested $blockSize was received or no remaining data is present.
-	 * This is required as stream_read only returns smaller chunks of data when the stream fetches from a
-	 * remote storage over the internet and it does not care about the given $blockSize.
-	 *
-	 * @param handle the stream to read from
-	 * @param int $blockSize Length of requested data block in bytes
-	 * @return string Data fetched from stream.
-	 */
-	private function fread_block($handle, int $blockSize): string {
-		$remaining = $blockSize;
-		$data = '';
-
-		do {
-			$chunk = fread($handle, $remaining);
-			$chunk_len = strlen($chunk);
-			$data .= $chunk;
-			$remaining -= $chunk_len;
-		} while (($remaining > 0) && ($chunk_len > 0));
-
-		return $data;
-	}
-
-	/**
-	 * @param Storage\IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @return bool
-	 */
-	public function moveFromStorage(
-		Storage\IStorage $sourceStorage,
-		$sourceInternalPath,
-		$targetInternalPath,
-		$preserveMtime = true
-	) {
-		if ($sourceStorage === $this) {
-			return $this->rename($sourceInternalPath, $targetInternalPath);
-		}
-
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		if (!$sourceStorage->isDeletable($sourceInternalPath)) {
-			return false;
-		}
-
-		$result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
-		if ($result) {
-			if ($sourceStorage->is_dir($sourceInternalPath)) {
-				$result &= $sourceStorage->rmdir($sourceInternalPath);
-			} else {
-				$result &= $sourceStorage->unlink($sourceInternalPath);
-			}
-		}
-		return $result;
-	}
-
-
-	/**
-	 * @param Storage\IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @param bool $isRename
-	 * @return bool
-	 */
-	public function copyFromStorage(
-		Storage\IStorage $sourceStorage,
-		$sourceInternalPath,
-		$targetInternalPath,
-		$preserveMtime = false,
-		$isRename = false
-	) {
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
-	}
-
-	/**
-	 * Update the encrypted cache version in the database
-	 *
-	 * @param Storage\IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $isRename
-	 * @param bool $keepEncryptionVersion
-	 */
-	private function updateEncryptedVersion(
-		Storage\IStorage $sourceStorage,
-		$sourceInternalPath,
-		$targetInternalPath,
-		$isRename,
-		$keepEncryptionVersion
-	) {
-		$isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath);
-		$cacheInformation = [
-			'encrypted' => $isEncrypted,
-		];
-		if ($isEncrypted) {
-			$sourceCacheEntry = $sourceStorage->getCache()->get($sourceInternalPath);
-			$targetCacheEntry = $this->getCache()->get($targetInternalPath);
-
-			// Rename of the cache already happened, so we do the cleanup on the target
-			if ($sourceCacheEntry === false && $targetCacheEntry !== false) {
-				$encryptedVersion = $targetCacheEntry['encryptedVersion'];
-				$isRename = false;
-			} else {
-				$encryptedVersion = $sourceCacheEntry['encryptedVersion'];
-			}
-
-			// In case of a move operation from an unencrypted to an encrypted
-			// storage the old encrypted version would stay with "0" while the
-			// correct value would be "1". Thus we manually set the value to "1"
-			// for those cases.
-			// See also https://github.com/owncloud/core/issues/23078
-			if ($encryptedVersion === 0 || !$keepEncryptionVersion) {
-				$encryptedVersion = 1;
-			}
-
-			$cacheInformation['encryptedVersion'] = $encryptedVersion;
-		}
-
-		// in case of a rename we need to manipulate the source cache because
-		// this information will be kept for the new target
-		if ($isRename) {
-			$sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
-		} else {
-			$this->getCache()->put($targetInternalPath, $cacheInformation);
-		}
-	}
-
-	/**
-	 * copy file between two storages
-	 *
-	 * @param Storage\IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @param bool $isRename
-	 * @return bool
-	 * @throws \Exception
-	 */
-	private function copyBetweenStorage(
-		Storage\IStorage $sourceStorage,
-		$sourceInternalPath,
-		$targetInternalPath,
-		$preserveMtime,
-		$isRename
-	) {
-		// for versions we have nothing to do, because versions should always use the
-		// key from the original file. Just create a 1:1 copy and done
-		if ($this->isVersion($targetInternalPath) ||
-			$this->isVersion($sourceInternalPath)) {
-			// remember that we try to create a version so that we can detect it during
-			// fopen($sourceInternalPath) and by-pass the encryption in order to
-			// create a 1:1 copy of the file
-			$this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
-			$result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-			$this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
-			if ($result) {
-				$info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
-				// make sure that we update the unencrypted size for the version
-				if (isset($info['encrypted']) && $info['encrypted'] === true) {
-					$this->updateUnencryptedSize(
-						$this->getFullPath($targetInternalPath),
-						$info->getUnencryptedSize()
-					);
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, true);
-			}
-			return $result;
-		}
-
-		// first copy the keys that we reuse the existing file key on the target location
-		// and don't create a new one which would break versions for example.
-		$mount = $this->mountManager->findByStorageId($sourceStorage->getId());
-		if (count($mount) === 1) {
-			$mountPoint = $mount[0]->getMountPoint();
-			$source = $mountPoint . '/' . $sourceInternalPath;
-			$target = $this->getFullPath($targetInternalPath);
-			$this->copyKeys($source, $target);
-		} else {
-			$this->logger->error('Could not find mount point, can\'t keep encryption keys');
-		}
-
-		if ($sourceStorage->is_dir($sourceInternalPath)) {
-			$dh = $sourceStorage->opendir($sourceInternalPath);
-			if (!$this->is_dir($targetInternalPath)) {
-				$result = $this->mkdir($targetInternalPath);
-			} else {
-				$result = true;
-			}
-			if (is_resource($dh)) {
-				while ($result and ($file = readdir($dh)) !== false) {
-					if (!Filesystem::isIgnoredDir($file)) {
-						$result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, false, $isRename);
-					}
-				}
-			}
-		} else {
-			try {
-				$source = $sourceStorage->fopen($sourceInternalPath, 'r');
-				$target = $this->fopen($targetInternalPath, 'w');
-				[, $result] = \OC_Helper::streamCopy($source, $target);
-			} finally {
-				if (is_resource($source)) {
-					fclose($source);
-				}
-				if (is_resource($target)) {
-					fclose($target);
-				}
-			}
-			if ($result) {
-				if ($preserveMtime) {
-					$this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, false);
-			} else {
-				// delete partially written target file
-				$this->unlink($targetInternalPath);
-				// delete cache entry that was created by fopen
-				$this->getCache()->remove($targetInternalPath);
-			}
-		}
-		return (bool)$result;
-	}
-
-	public function getLocalFile($path) {
-		if ($this->encryptionManager->isEnabled()) {
-			$cachedFile = $this->getCachedFile($path);
-			if (is_string($cachedFile)) {
-				return $cachedFile;
-			}
-		}
-		return $this->storage->getLocalFile($path);
-	}
-
-	public function isLocal() {
-		if ($this->encryptionManager->isEnabled()) {
-			return false;
-		}
-		return $this->storage->isLocal();
-	}
-
-	public function stat($path) {
-		$stat = $this->storage->stat($path);
-		if (!$stat) {
-			return false;
-		}
-		$fileSize = $this->filesize($path);
-		$stat['size'] = $fileSize;
-		$stat[7] = $fileSize;
-		$stat['hasHeader'] = $this->getHeaderSize($path) > 0;
-		return $stat;
-	}
-
-	public function hash($type, $path, $raw = false) {
-		$fh = $this->fopen($path, 'rb');
-		$ctx = hash_init($type);
-		hash_update_stream($ctx, $fh);
-		fclose($fh);
-		return hash_final($ctx, $raw);
-	}
-
-	/**
-	 * return full path, including mount point
-	 *
-	 * @param string $path relative to mount point
-	 * @return string full path including mount point
-	 */
-	protected function getFullPath($path) {
-		return Filesystem::normalizePath($this->mountPoint . '/' . $path);
-	}
-
-	/**
-	 * read first block of encrypted file, typically this will contain the
-	 * encryption header
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	protected function readFirstBlock($path) {
-		$firstBlock = '';
-		if ($this->storage->is_file($path)) {
-			$handle = $this->storage->fopen($path, 'r');
-			$firstBlock = fread($handle, $this->util->getHeaderSize());
-			fclose($handle);
-		}
-		return $firstBlock;
-	}
-
-	/**
-	 * return header size of given file
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	protected function getHeaderSize($path) {
-		$headerSize = 0;
-		$realFile = $this->util->stripPartialFileExtension($path);
-		if ($this->storage->is_file($realFile)) {
-			$path = $realFile;
-		}
-		$firstBlock = $this->readFirstBlock($path);
-
-		if (substr($firstBlock, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
-			$headerSize = $this->util->getHeaderSize();
-		}
-
-		return $headerSize;
-	}
-
-	/**
-	 * parse raw header to array
-	 *
-	 * @param string $rawHeader
-	 * @return array
-	 */
-	protected function parseRawHeader($rawHeader) {
-		$result = [];
-		if (substr($rawHeader, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
-			$header = $rawHeader;
-			$endAt = strpos($header, Util::HEADER_END);
-			if ($endAt !== false) {
-				$header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
-
-				// +1 to not start with an ':' which would result in empty element at the beginning
-				$exploded = explode(':', substr($header, strlen(Util::HEADER_START) + 1));
-
-				$element = array_shift($exploded);
-				while ($element !== Util::HEADER_END) {
-					$result[$element] = array_shift($exploded);
-					$element = array_shift($exploded);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * read header from file
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	protected function getHeader($path) {
-		$realFile = $this->util->stripPartialFileExtension($path);
-		$exists = $this->storage->is_file($realFile);
-		if ($exists) {
-			$path = $realFile;
-		}
-
-		$result = [];
-
-		$isEncrypted = $this->encryptedPaths->get($realFile);
-		if (is_null($isEncrypted)) {
-			$info = $this->getCache()->get($path);
-			$isEncrypted = isset($info['encrypted']) && $info['encrypted'] === true;
-		}
-
-		if ($isEncrypted) {
-			$firstBlock = $this->readFirstBlock($path);
-			$result = $this->parseRawHeader($firstBlock);
-
-			// if the header doesn't contain a encryption module we check if it is a
-			// legacy file. If true, we add the default encryption module
-			if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY]) && (!empty($result) || $exists)) {
-				$result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * read encryption module needed to read/write the file located at $path
-	 *
-	 * @param string $path
-	 * @return null|\OCP\Encryption\IEncryptionModule
-	 * @throws ModuleDoesNotExistsException
-	 * @throws \Exception
-	 */
-	protected function getEncryptionModule($path) {
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-		if (!empty($encryptionModuleId)) {
-			try {
-				$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
-				throw $e;
-			}
-		}
-
-		return $encryptionModule;
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $unencryptedSize
-	 */
-	public function updateUnencryptedSize($path, $unencryptedSize) {
-		$this->unencryptedSize[$path] = $unencryptedSize;
-	}
-
-	/**
-	 * copy keys to new location
-	 *
-	 * @param string $source path relative to data/
-	 * @param string $target path relative to data/
-	 * @return bool
-	 */
-	protected function copyKeys($source, $target) {
-		if (!$this->util->isExcluded($source)) {
-			return $this->keyStorage->copyKeys($source, $target);
-		}
-
-		return false;
-	}
-
-	/**
-	 * check if path points to a files version
-	 *
-	 * @param $path
-	 * @return bool
-	 */
-	protected function isVersion($path) {
-		$normalized = Filesystem::normalizePath($path);
-		return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
-	}
-
-	/**
-	 * check if the given storage should be encrypted or not
-	 *
-	 * @param $path
-	 * @return bool
-	 */
-	protected function shouldEncrypt($path) {
-		$fullPath = $this->getFullPath($path);
-		$mountPointConfig = $this->mount->getOption('encrypt', true);
-		if ($mountPointConfig === false) {
-			return false;
-		}
-
-		try {
-			$encryptionModule = $this->getEncryptionModule($fullPath);
-		} catch (ModuleDoesNotExistsException $e) {
-			return false;
-		}
-
-		if ($encryptionModule === null) {
-			$encryptionModule = $this->encryptionManager->getEncryptionModule();
-		}
-
-		return $encryptionModule->shouldEncrypt($fullPath);
-	}
-
-	public function writeStream(string $path, $stream, int $size = null): int {
-		// always fall back to fopen
-		$target = $this->fopen($path, 'w');
-		[$count, $result] = \OC_Helper::streamCopy($stream, $target);
-		fclose($stream);
-		fclose($target);
-
-		// object store, stores the size after write and doesn't update this during scan
-		// manually store the unencrypted size
-		if ($result && $this->getWrapperStorage()->instanceOfStorage(ObjectStoreStorage::class)) {
-			$this->getCache()->put($path, ['unencrypted_size' => $count]);
-		}
-
-		return $count;
-	}
-
-	public function clearIsEncryptedCache(): void {
-		$this->encryptedPaths->clear();
-	}
+    use LocalTempFileTrait;
+
+    /** @var string */
+    private $mountPoint;
+
+    /** @var \OC\Encryption\Util */
+    private $util;
+
+    /** @var \OCP\Encryption\IManager */
+    private $encryptionManager;
+
+    private LoggerInterface $logger;
+
+    /** @var string */
+    private $uid;
+
+    /** @var array */
+    protected $unencryptedSize;
+
+    /** @var \OCP\Encryption\IFile */
+    private $fileHelper;
+
+    /** @var IMountPoint */
+    private $mount;
+
+    /** @var IStorage */
+    private $keyStorage;
+
+    /** @var Update */
+    private $update;
+
+    /** @var Manager */
+    private $mountManager;
+
+    /** @var array remember for which path we execute the repair step to avoid recursions */
+    private $fixUnencryptedSizeOf = [];
+
+    /** @var  ArrayCache */
+    private $arrayCache;
+
+    /** @var CappedMemoryCache<bool> */
+    private CappedMemoryCache $encryptedPaths;
+
+    /**
+     * @param array $parameters
+     */
+    public function __construct(
+        $parameters,
+        IManager $encryptionManager = null,
+        Util $util = null,
+        LoggerInterface $logger = null,
+        IFile $fileHelper = null,
+        $uid = null,
+        IStorage $keyStorage = null,
+        Update $update = null,
+        Manager $mountManager = null,
+        ArrayCache $arrayCache = null
+    ) {
+        $this->mountPoint = $parameters['mountPoint'];
+        $this->mount = $parameters['mount'];
+        $this->encryptionManager = $encryptionManager;
+        $this->util = $util;
+        $this->logger = $logger;
+        $this->uid = $uid;
+        $this->fileHelper = $fileHelper;
+        $this->keyStorage = $keyStorage;
+        $this->unencryptedSize = [];
+        $this->update = $update;
+        $this->mountManager = $mountManager;
+        $this->arrayCache = $arrayCache;
+        $this->encryptedPaths = new CappedMemoryCache();
+        parent::__construct($parameters);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     */
+    public function filesize($path): false|int|float {
+        $fullPath = $this->getFullPath($path);
+
+        $info = $this->getCache()->get($path);
+        if ($info === false) {
+            return false;
+        }
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $size = $this->unencryptedSize[$fullPath];
+            // update file cache
+            if ($info instanceof ICacheEntry) {
+                $info['encrypted'] = $info['encryptedVersion'];
+            } else {
+                if (!is_array($info)) {
+                    $info = [];
+                }
+                $info['encrypted'] = true;
+                $info = new CacheEntry($info);
+            }
+
+            if ($size !== $info->getUnencryptedSize()) {
+                $this->getCache()->update($info->getId(), [
+                    'unencrypted_size' => $size
+                ]);
+            }
+
+            return $size;
+        }
+
+        if (isset($info['fileid']) && $info['encrypted']) {
+            return $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
+        }
+
+        return $this->storage->filesize($path);
+    }
+
+    /**
+     * @param string $path
+     * @param array $data
+     * @return array
+     */
+    private function modifyMetaData(string $path, array $data): array {
+        $fullPath = $this->getFullPath($path);
+        $info = $this->getCache()->get($path);
+
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $data['encrypted'] = true;
+            $data['size'] = $this->unencryptedSize[$fullPath];
+            $data['unencrypted_size'] = $data['size'];
+        } else {
+            if (isset($info['fileid']) && $info['encrypted']) {
+                $data['size'] = $this->verifyUnencryptedSize($path, $info->getUnencryptedSize());
+                $data['encrypted'] = true;
+                $data['unencrypted_size'] = $data['size'];
+            }
+        }
+
+        if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
+            $data['encryptedVersion'] = $info['encryptedVersion'];
+        }
+
+        return $data;
+    }
+
+    public function getMetaData($path) {
+        $data = $this->storage->getMetaData($path);
+        if (is_null($data)) {
+            return null;
+        }
+        return $this->modifyMetaData($path, $data);
+    }
+
+    public function getDirectoryContent($directory): \Traversable {
+        $parent = rtrim($directory, '/');
+        foreach ($this->getWrapperStorage()->getDirectoryContent($directory) as $data) {
+            yield $this->modifyMetaData($parent . '/' . $data['name'], $data);
+        }
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function file_get_contents($path) {
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        if ($encryptionModule) {
+            $handle = $this->fopen($path, "r");
+            if (!$handle) {
+                return false;
+            }
+            $data = stream_get_contents($handle);
+            fclose($handle);
+            return $data;
+        }
+        return $this->storage->file_get_contents($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|false
+     */
+    public function file_put_contents($path, $data) {
+        // file put content will always be translated to a stream write
+        $handle = $this->fopen($path, 'w');
+        if (is_resource($handle)) {
+            $written = fwrite($handle, $data);
+            fclose($handle);
+            return $written;
+        }
+
+        return false;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function unlink($path) {
+        $fullPath = $this->getFullPath($path);
+        if ($this->util->isExcluded($fullPath)) {
+            return $this->storage->unlink($path);
+        }
+
+        $encryptionModule = $this->getEncryptionModule($path);
+        if ($encryptionModule) {
+            $this->keyStorage->deleteAllFileKeys($fullPath);
+        }
+
+        return $this->storage->unlink($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function rename($source, $target) {
+        $result = $this->storage->rename($source, $target);
+
+        if ($result &&
+            // versions always use the keys from the original file, so we can skip
+            // this step for versions
+            $this->isVersion($target) === false &&
+            $this->encryptionManager->isEnabled()) {
+            $sourcePath = $this->getFullPath($source);
+            if (!$this->util->isExcluded($sourcePath)) {
+                $targetPath = $this->getFullPath($target);
+                if (isset($this->unencryptedSize[$sourcePath])) {
+                    $this->unencryptedSize[$targetPath] = $this->unencryptedSize[$sourcePath];
+                }
+                $this->keyStorage->renameKeys($sourcePath, $targetPath);
+                $module = $this->getEncryptionModule($target);
+                if ($module) {
+                    $module->update($targetPath, $this->uid, []);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function rmdir($path) {
+        $result = $this->storage->rmdir($path);
+        $fullPath = $this->getFullPath($path);
+        if ($result &&
+            $this->util->isExcluded($fullPath) === false &&
+            $this->encryptionManager->isEnabled()
+        ) {
+            $this->keyStorage->deleteAllFileKeys($fullPath);
+        }
+
+        return $result;
+    }
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isReadable($path) {
+        $isReadable = true;
+
+        $metaData = $this->getMetaData($path);
+        if (
+            !$this->is_dir($path) &&
+            isset($metaData['encrypted']) &&
+            $metaData['encrypted'] === true
+        ) {
+            $fullPath = $this->getFullPath($path);
+            $module = $this->getEncryptionModule($path);
+            $isReadable = $module->isReadable($fullPath, $this->uid);
+        }
+
+        return $this->storage->isReadable($path) && $isReadable;
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     */
+    public function copy($source, $target): bool {
+        $sourcePath = $this->getFullPath($source);
+
+        if ($this->util->isExcluded($sourcePath)) {
+            return $this->storage->copy($source, $target);
+        }
+
+        // need to stream copy file by file in case we copy between a encrypted
+        // and a unencrypted storage
+        $this->unlink($target);
+        return $this->copyFromStorage($this, $source, $target);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     * @throws GenericEncryptionException
+     * @throws ModuleDoesNotExistsException
+     */
+    public function fopen($path, $mode) {
+        // check if the file is stored in the array cache, this means that we
+        // copy a file over to the versions folder, in this case we don't want to
+        // decrypt it
+        if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
+            $this->arrayCache->remove('encryption_copy_version_' . $path);
+            return $this->storage->fopen($path, $mode);
+        }
+
+        $encryptionEnabled = $this->encryptionManager->isEnabled();
+        $shouldEncrypt = false;
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $signed = isset($header['signed']) && $header['signed'] === 'true';
+        $fullPath = $this->getFullPath($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+
+        if ($this->util->isExcluded($fullPath) === false) {
+            $size = $unencryptedSize = 0;
+            $realFile = $this->util->stripPartialFileExtension($path);
+            $targetExists = $this->is_file($realFile) || $this->file_exists($path);
+            $targetIsEncrypted = false;
+            if ($targetExists) {
+                // in case the file exists we require the explicit module as
+                // specified in the file header - otherwise we need to fail hard to
+                // prevent data loss on client side
+                if (!empty($encryptionModuleId)) {
+                    $targetIsEncrypted = true;
+                    $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                }
+
+                if ($this->file_exists($path)) {
+                    $size = $this->storage->filesize($path);
+                    $unencryptedSize = $this->filesize($path);
+                } else {
+                    $size = $unencryptedSize = 0;
+                }
+            }
+
+            try {
+                if (
+                    $mode === 'w'
+                    || $mode === 'w+'
+                    || $mode === 'wb'
+                    || $mode === 'wb+'
+                ) {
+                    // if we update a encrypted file with a un-encrypted one we change the db flag
+                    if ($targetIsEncrypted && $encryptionEnabled === false) {
+                        $cache = $this->storage->getCache();
+                        if ($cache) {
+                            $entry = $cache->get($path);
+                            $cache->update($entry->getId(), ['encrypted' => 0]);
+                        }
+                    }
+                    if ($encryptionEnabled) {
+                        // if $encryptionModuleId is empty, the default module will be used
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
+                        $signed = true;
+                    }
+                } else {
+                    $info = $this->getCache()->get($path);
+                    // only get encryption module if we found one in the header
+                    // or if file should be encrypted according to the file cache
+                    if (!empty($encryptionModuleId)) {
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = true;
+                    } elseif (empty($encryptionModuleId) && $info['encrypted'] === true) {
+                        // we come from a old installation. No header and/or no module defined
+                        // but the file is encrypted. In this case we need to use the
+                        // OC_DEFAULT_MODULE to read the file
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
+                        $shouldEncrypt = true;
+                        $targetIsEncrypted = true;
+                    }
+                }
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->warning('Encryption module "' . $encryptionModuleId . '" not found, file will be stored unencrypted', [
+                    'exception' => $e,
+                    'app' => 'core',
+                ]);
+            }
+
+            // encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
+            if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
+                if (!$targetExists || !$targetIsEncrypted) {
+                    $shouldEncrypt = false;
+                }
+            }
+
+            if ($shouldEncrypt === true && $encryptionModule !== null) {
+                $this->encryptedPaths->set($this->util->stripPartialFileExtension($path), true);
+                $headerSize = $this->getHeaderSize($path);
+                $source = $this->storage->fopen($path, $mode);
+                if (!is_resource($source)) {
+                    return false;
+                }
+                $handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
+                    $this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
+                    $size, $unencryptedSize, $headerSize, $signed);
+
+                return $handle;
+            }
+        }
+
+        return $this->storage->fopen($path, $mode);
+    }
+
+
+    /**
+     * perform some plausibility checks if the the unencrypted size is correct.
+     * If not, we calculate the correct unencrypted size and return it
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $unencryptedSize size of the unencrypted file
+     *
+     * @return int unencrypted size
+     */
+    protected function verifyUnencryptedSize(string $path, int $unencryptedSize): int {
+        $size = $this->storage->filesize($path);
+        $result = $unencryptedSize;
+
+        if ($unencryptedSize < 0 ||
+            ($size > 0 && $unencryptedSize === $size) ||
+            $unencryptedSize > $size
+        ) {
+            // check if we already calculate the unencrypted size for the
+            // given path to avoid recursions
+            if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
+                $this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
+                try {
+                    $result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
+                } catch (\Exception $e) {
+                    $this->logger->error('Couldn\'t re-calculate unencrypted size for ' . $path, ['exception' => $e]);
+                }
+                unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * calculate the unencrypted size
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $size size of the physical file
+     * @param int $unencryptedSize size of the unencrypted file
+     *
+     * @return int calculated unencrypted size
+     */
+    protected function fixUnencryptedSize(string $path, int $size, int $unencryptedSize): int {
+        $headerSize = $this->getHeaderSize($path);
+        $header = $this->getHeader($path);
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        $stream = $this->storage->fopen($path, 'r');
+
+        // if we couldn't open the file we return the old unencrypted size
+        if (!is_resource($stream)) {
+            $this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
+            return $unencryptedSize;
+        }
+
+        $newUnencryptedSize = 0;
+        $size -= $headerSize;
+        $blockSize = $this->util->getBlockSize();
+
+        // if a header exists we skip it
+        if ($headerSize > 0) {
+            $this->fread_block($stream, $headerSize);
+        }
+
+        // fast path, else the calculation for $lastChunkNr is bogus
+        if ($size === 0) {
+            return 0;
+        }
+
+        $signed = isset($header['signed']) && $header['signed'] === 'true';
+        $unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
+
+        // calculate last chunk nr
+        // next highest is end of chunks, one subtracted is last one
+        // we have to read the last chunk, we can't just calculate it (because of padding etc)
+
+        $lastChunkNr = ceil($size / $blockSize) - 1;
+        // calculate last chunk position
+        $lastChunkPos = ($lastChunkNr * $blockSize);
+        // try to fseek to the last chunk, if it fails we have to read the whole file
+        if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
+            $newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
+        }
+
+        $lastChunkContentEncrypted = '';
+        $count = $blockSize;
+
+        while ($count > 0) {
+            $data = $this->fread_block($stream, $blockSize);
+            $count = strlen($data);
+            $lastChunkContentEncrypted .= $data;
+            if (strlen($lastChunkContentEncrypted) > $blockSize) {
+                $newUnencryptedSize += $unencryptedBlockSize;
+                $lastChunkContentEncrypted = substr($lastChunkContentEncrypted, $blockSize);
+            }
+        }
+
+        fclose($stream);
+
+        // we have to decrypt the last chunk to get it actual size
+        $encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
+        $decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
+        $decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
+
+        // calc the real file size with the size of the last chunk
+        $newUnencryptedSize += strlen($decryptedLastChunk);
+
+        $this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
+
+        // write to cache if applicable
+        $cache = $this->storage->getCache();
+        if ($cache) {
+            $entry = $cache->get($path);
+            $cache->update($entry['fileid'], [
+                'unencrypted_size' => $newUnencryptedSize
+            ]);
+        }
+
+        return $newUnencryptedSize;
+    }
+
+    /**
+     * fread_block
+     *
+     * This function is a wrapper around the fread function.  It is based on the
+     * stream_read_block function from lib/private/Files/Streams/Encryption.php
+     * It calls stream read until the requested $blockSize was received or no remaining data is present.
+     * This is required as stream_read only returns smaller chunks of data when the stream fetches from a
+     * remote storage over the internet and it does not care about the given $blockSize.
+     *
+     * @param handle the stream to read from
+     * @param int $blockSize Length of requested data block in bytes
+     * @return string Data fetched from stream.
+     */
+    private function fread_block($handle, int $blockSize): string {
+        $remaining = $blockSize;
+        $data = '';
+
+        do {
+            $chunk = fread($handle, $remaining);
+            $chunk_len = strlen($chunk);
+            $data .= $chunk;
+            $remaining -= $chunk_len;
+        } while (($remaining > 0) && ($chunk_len > 0));
+
+        return $data;
+    }
+
+    /**
+     * @param Storage\IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @return bool
+     */
+    public function moveFromStorage(
+        Storage\IStorage $sourceStorage,
+        $sourceInternalPath,
+        $targetInternalPath,
+        $preserveMtime = true
+    ) {
+        if ($sourceStorage === $this) {
+            return $this->rename($sourceInternalPath, $targetInternalPath);
+        }
+
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        if (!$sourceStorage->isDeletable($sourceInternalPath)) {
+            return false;
+        }
+
+        $result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
+        if ($result) {
+            if ($sourceStorage->is_dir($sourceInternalPath)) {
+                $result &= $sourceStorage->rmdir($sourceInternalPath);
+            } else {
+                $result &= $sourceStorage->unlink($sourceInternalPath);
+            }
+        }
+        return $result;
+    }
+
+
+    /**
+     * @param Storage\IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @param bool $isRename
+     * @return bool
+     */
+    public function copyFromStorage(
+        Storage\IStorage $sourceStorage,
+        $sourceInternalPath,
+        $targetInternalPath,
+        $preserveMtime = false,
+        $isRename = false
+    ) {
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
+    }
+
+    /**
+     * Update the encrypted cache version in the database
+     *
+     * @param Storage\IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $isRename
+     * @param bool $keepEncryptionVersion
+     */
+    private function updateEncryptedVersion(
+        Storage\IStorage $sourceStorage,
+        $sourceInternalPath,
+        $targetInternalPath,
+        $isRename,
+        $keepEncryptionVersion
+    ) {
+        $isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath);
+        $cacheInformation = [
+            'encrypted' => $isEncrypted,
+        ];
+        if ($isEncrypted) {
+            $sourceCacheEntry = $sourceStorage->getCache()->get($sourceInternalPath);
+            $targetCacheEntry = $this->getCache()->get($targetInternalPath);
+
+            // Rename of the cache already happened, so we do the cleanup on the target
+            if ($sourceCacheEntry === false && $targetCacheEntry !== false) {
+                $encryptedVersion = $targetCacheEntry['encryptedVersion'];
+                $isRename = false;
+            } else {
+                $encryptedVersion = $sourceCacheEntry['encryptedVersion'];
+            }
+
+            // In case of a move operation from an unencrypted to an encrypted
+            // storage the old encrypted version would stay with "0" while the
+            // correct value would be "1". Thus we manually set the value to "1"
+            // for those cases.
+            // See also https://github.com/owncloud/core/issues/23078
+            if ($encryptedVersion === 0 || !$keepEncryptionVersion) {
+                $encryptedVersion = 1;
+            }
+
+            $cacheInformation['encryptedVersion'] = $encryptedVersion;
+        }
+
+        // in case of a rename we need to manipulate the source cache because
+        // this information will be kept for the new target
+        if ($isRename) {
+            $sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
+        } else {
+            $this->getCache()->put($targetInternalPath, $cacheInformation);
+        }
+    }
+
+    /**
+     * copy file between two storages
+     *
+     * @param Storage\IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @param bool $isRename
+     * @return bool
+     * @throws \Exception
+     */
+    private function copyBetweenStorage(
+        Storage\IStorage $sourceStorage,
+        $sourceInternalPath,
+        $targetInternalPath,
+        $preserveMtime,
+        $isRename
+    ) {
+        // for versions we have nothing to do, because versions should always use the
+        // key from the original file. Just create a 1:1 copy and done
+        if ($this->isVersion($targetInternalPath) ||
+            $this->isVersion($sourceInternalPath)) {
+            // remember that we try to create a version so that we can detect it during
+            // fopen($sourceInternalPath) and by-pass the encryption in order to
+            // create a 1:1 copy of the file
+            $this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
+            $result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+            $this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
+            if ($result) {
+                $info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
+                // make sure that we update the unencrypted size for the version
+                if (isset($info['encrypted']) && $info['encrypted'] === true) {
+                    $this->updateUnencryptedSize(
+                        $this->getFullPath($targetInternalPath),
+                        $info->getUnencryptedSize()
+                    );
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, true);
+            }
+            return $result;
+        }
+
+        // first copy the keys that we reuse the existing file key on the target location
+        // and don't create a new one which would break versions for example.
+        $mount = $this->mountManager->findByStorageId($sourceStorage->getId());
+        if (count($mount) === 1) {
+            $mountPoint = $mount[0]->getMountPoint();
+            $source = $mountPoint . '/' . $sourceInternalPath;
+            $target = $this->getFullPath($targetInternalPath);
+            $this->copyKeys($source, $target);
+        } else {
+            $this->logger->error('Could not find mount point, can\'t keep encryption keys');
+        }
+
+        if ($sourceStorage->is_dir($sourceInternalPath)) {
+            $dh = $sourceStorage->opendir($sourceInternalPath);
+            if (!$this->is_dir($targetInternalPath)) {
+                $result = $this->mkdir($targetInternalPath);
+            } else {
+                $result = true;
+            }
+            if (is_resource($dh)) {
+                while ($result and ($file = readdir($dh)) !== false) {
+                    if (!Filesystem::isIgnoredDir($file)) {
+                        $result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, false, $isRename);
+                    }
+                }
+            }
+        } else {
+            try {
+                $source = $sourceStorage->fopen($sourceInternalPath, 'r');
+                $target = $this->fopen($targetInternalPath, 'w');
+                [, $result] = \OC_Helper::streamCopy($source, $target);
+            } finally {
+                if (is_resource($source)) {
+                    fclose($source);
+                }
+                if (is_resource($target)) {
+                    fclose($target);
+                }
+            }
+            if ($result) {
+                if ($preserveMtime) {
+                    $this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename, false);
+            } else {
+                // delete partially written target file
+                $this->unlink($targetInternalPath);
+                // delete cache entry that was created by fopen
+                $this->getCache()->remove($targetInternalPath);
+            }
+        }
+        return (bool)$result;
+    }
+
+    public function getLocalFile($path) {
+        if ($this->encryptionManager->isEnabled()) {
+            $cachedFile = $this->getCachedFile($path);
+            if (is_string($cachedFile)) {
+                return $cachedFile;
+            }
+        }
+        return $this->storage->getLocalFile($path);
+    }
+
+    public function isLocal() {
+        if ($this->encryptionManager->isEnabled()) {
+            return false;
+        }
+        return $this->storage->isLocal();
+    }
+
+    public function stat($path) {
+        $stat = $this->storage->stat($path);
+        if (!$stat) {
+            return false;
+        }
+        $fileSize = $this->filesize($path);
+        $stat['size'] = $fileSize;
+        $stat[7] = $fileSize;
+        $stat['hasHeader'] = $this->getHeaderSize($path) > 0;
+        return $stat;
+    }
+
+    public function hash($type, $path, $raw = false) {
+        $fh = $this->fopen($path, 'rb');
+        $ctx = hash_init($type);
+        hash_update_stream($ctx, $fh);
+        fclose($fh);
+        return hash_final($ctx, $raw);
+    }
+
+    /**
+     * return full path, including mount point
+     *
+     * @param string $path relative to mount point
+     * @return string full path including mount point
+     */
+    protected function getFullPath($path) {
+        return Filesystem::normalizePath($this->mountPoint . '/' . $path);
+    }
+
+    /**
+     * read first block of encrypted file, typically this will contain the
+     * encryption header
+     *
+     * @param string $path
+     * @return string
+     */
+    protected function readFirstBlock($path) {
+        $firstBlock = '';
+        if ($this->storage->is_file($path)) {
+            $handle = $this->storage->fopen($path, 'r');
+            $firstBlock = fread($handle, $this->util->getHeaderSize());
+            fclose($handle);
+        }
+        return $firstBlock;
+    }
+
+    /**
+     * return header size of given file
+     *
+     * @param string $path
+     * @return int
+     */
+    protected function getHeaderSize($path) {
+        $headerSize = 0;
+        $realFile = $this->util->stripPartialFileExtension($path);
+        if ($this->storage->is_file($realFile)) {
+            $path = $realFile;
+        }
+        $firstBlock = $this->readFirstBlock($path);
+
+        if (substr($firstBlock, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
+            $headerSize = $this->util->getHeaderSize();
+        }
+
+        return $headerSize;
+    }
+
+    /**
+     * parse raw header to array
+     *
+     * @param string $rawHeader
+     * @return array
+     */
+    protected function parseRawHeader($rawHeader) {
+        $result = [];
+        if (substr($rawHeader, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
+            $header = $rawHeader;
+            $endAt = strpos($header, Util::HEADER_END);
+            if ($endAt !== false) {
+                $header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
+
+                // +1 to not start with an ':' which would result in empty element at the beginning
+                $exploded = explode(':', substr($header, strlen(Util::HEADER_START) + 1));
+
+                $element = array_shift($exploded);
+                while ($element !== Util::HEADER_END) {
+                    $result[$element] = array_shift($exploded);
+                    $element = array_shift($exploded);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * read header from file
+     *
+     * @param string $path
+     * @return array
+     */
+    protected function getHeader($path) {
+        $realFile = $this->util->stripPartialFileExtension($path);
+        $exists = $this->storage->is_file($realFile);
+        if ($exists) {
+            $path = $realFile;
+        }
+
+        $result = [];
+
+        $isEncrypted = $this->encryptedPaths->get($realFile);
+        if (is_null($isEncrypted)) {
+            $info = $this->getCache()->get($path);
+            $isEncrypted = isset($info['encrypted']) && $info['encrypted'] === true;
+        }
+
+        if ($isEncrypted) {
+            $firstBlock = $this->readFirstBlock($path);
+            $result = $this->parseRawHeader($firstBlock);
+
+            // if the header doesn't contain a encryption module we check if it is a
+            // legacy file. If true, we add the default encryption module
+            if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY]) && (!empty($result) || $exists)) {
+                $result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * read encryption module needed to read/write the file located at $path
+     *
+     * @param string $path
+     * @return null|\OCP\Encryption\IEncryptionModule
+     * @throws ModuleDoesNotExistsException
+     * @throws \Exception
+     */
+    protected function getEncryptionModule($path) {
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+        if (!empty($encryptionModuleId)) {
+            try {
+                $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
+                throw $e;
+            }
+        }
+
+        return $encryptionModule;
+    }
+
+    /**
+     * @param string $path
+     * @param int $unencryptedSize
+     */
+    public function updateUnencryptedSize($path, $unencryptedSize) {
+        $this->unencryptedSize[$path] = $unencryptedSize;
+    }
+
+    /**
+     * copy keys to new location
+     *
+     * @param string $source path relative to data/
+     * @param string $target path relative to data/
+     * @return bool
+     */
+    protected function copyKeys($source, $target) {
+        if (!$this->util->isExcluded($source)) {
+            return $this->keyStorage->copyKeys($source, $target);
+        }
+
+        return false;
+    }
+
+    /**
+     * check if path points to a files version
+     *
+     * @param $path
+     * @return bool
+     */
+    protected function isVersion($path) {
+        $normalized = Filesystem::normalizePath($path);
+        return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
+    }
+
+    /**
+     * check if the given storage should be encrypted or not
+     *
+     * @param $path
+     * @return bool
+     */
+    protected function shouldEncrypt($path) {
+        $fullPath = $this->getFullPath($path);
+        $mountPointConfig = $this->mount->getOption('encrypt', true);
+        if ($mountPointConfig === false) {
+            return false;
+        }
+
+        try {
+            $encryptionModule = $this->getEncryptionModule($fullPath);
+        } catch (ModuleDoesNotExistsException $e) {
+            return false;
+        }
+
+        if ($encryptionModule === null) {
+            $encryptionModule = $this->encryptionManager->getEncryptionModule();
+        }
+
+        return $encryptionModule->shouldEncrypt($fullPath);
+    }
+
+    public function writeStream(string $path, $stream, int $size = null): int {
+        // always fall back to fopen
+        $target = $this->fopen($path, 'w');
+        [$count, $result] = \OC_Helper::streamCopy($stream, $target);
+        fclose($stream);
+        fclose($target);
+
+        // object store, stores the size after write and doesn't update this during scan
+        // manually store the unencrypted size
+        if ($result && $this->getWrapperStorage()->instanceOfStorage(ObjectStoreStorage::class)) {
+            $this->getCache()->put($path, ['unencrypted_size' => $count]);
+        }
+
+        return $count;
+    }
+
+    public function clearIsEncryptedCache(): void {
+        $this->encryptedPaths->clear();
+    }
 }

lib/private/Files/Storage/Wrapper/Wrapper.php

Indentation +616 added lines, -616 removed lines

@@ -38,620 +38,620 @@
 use OCP\Lock\ILockingProvider;
 
 class Wrapper implements \OC\Files\Storage\Storage, ILockingStorage, IWriteStreamStorage {
-	/**
-	 * @var \OC\Files\Storage\Storage $storage
-	 */
-	protected $storage;
-
-	public $cache;
-	public $scanner;
-	public $watcher;
-	public $propagator;
-	public $updater;
-
-	/**
-	 * @param array $parameters
-	 */
-	public function __construct($parameters) {
-		$this->storage = $parameters['storage'];
-	}
-
-	/**
-	 * @return \OC\Files\Storage\Storage
-	 */
-	public function getWrapperStorage() {
-		return $this->storage;
-	}
-
-	/**
-	 * Get the identifier for the storage,
-	 * the returned id should be the same for every storage object that is created with the same parameters
-	 * and two storage objects with the same id should refer to two storages that display the same files.
-	 *
-	 * @return string
-	 */
-	public function getId() {
-		return $this->getWrapperStorage()->getId();
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.mkdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function mkdir($path) {
-		return $this->getWrapperStorage()->mkdir($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function rmdir($path) {
-		return $this->getWrapperStorage()->rmdir($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.opendir.php
-	 *
-	 * @param string $path
-	 * @return resource|false
-	 */
-	public function opendir($path) {
-		return $this->getWrapperStorage()->opendir($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_dir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_dir($path) {
-		return $this->getWrapperStorage()->is_dir($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.is_file.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function is_file($path) {
-		return $this->getWrapperStorage()->is_file($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 */
-	public function stat($path) {
-		return $this->getWrapperStorage()->stat($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filetype.php
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 */
-	public function filetype($path) {
-		return $this->getWrapperStorage()->filetype($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 */
-	public function filesize($path): false|int|float {
-		return $this->getWrapperStorage()->filesize($path);
-	}
-
-	/**
-	 * check if a file can be created in $path
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isCreatable($path) {
-		return $this->getWrapperStorage()->isCreatable($path);
-	}
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isReadable($path) {
-		return $this->getWrapperStorage()->isReadable($path);
-	}
-
-	/**
-	 * check if a file can be written to
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isUpdatable($path) {
-		return $this->getWrapperStorage()->isUpdatable($path);
-	}
-
-	/**
-	 * check if a file can be deleted
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isDeletable($path) {
-		return $this->getWrapperStorage()->isDeletable($path);
-	}
-
-	/**
-	 * check if a file can be shared
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isSharable($path) {
-		return $this->getWrapperStorage()->isSharable($path);
-	}
-
-	/**
-	 * get the full permissions of a path.
-	 * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	public function getPermissions($path) {
-		return $this->getWrapperStorage()->getPermissions($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_exists.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function file_exists($path) {
-		return $this->getWrapperStorage()->file_exists($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.filemtime.php
-	 *
-	 * @param string $path
-	 * @return int|bool
-	 */
-	public function filemtime($path) {
-		return $this->getWrapperStorage()->filemtime($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function file_get_contents($path) {
-		return $this->getWrapperStorage()->file_get_contents($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param mixed $data
-	 * @return int|float|false
-	 */
-	public function file_put_contents($path, $data) {
-		return $this->getWrapperStorage()->file_put_contents($path, $data);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function unlink($path) {
-		return $this->getWrapperStorage()->unlink($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.rename.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function rename($source, $target) {
-		return $this->getWrapperStorage()->rename($source, $target);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.copy.php
-	 *
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	public function copy($source, $target) {
-		return $this->getWrapperStorage()->copy($source, $target);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 */
-	public function fopen($path, $mode) {
-		return $this->getWrapperStorage()->fopen($path, $mode);
-	}
-
-	/**
-	 * get the mimetype for a file or folder
-	 * The mimetype for a folder is required to be "httpd/unix-directory"
-	 *
-	 * @param string $path
-	 * @return string|bool
-	 */
-	public function getMimeType($path) {
-		return $this->getWrapperStorage()->getMimeType($path);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.hash.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string|bool
-	 */
-	public function hash($type, $path, $raw = false) {
-		return $this->getWrapperStorage()->hash($type, $path, $raw);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.free_space.php
-	 *
-	 * @param string $path
-	 * @return int|float|bool
-	 */
-	public function free_space($path) {
-		return $this->getWrapperStorage()->free_space($path);
-	}
-
-	/**
-	 * search for occurrences of $query in file names
-	 *
-	 * @param string $query
-	 * @return array|bool
-	 */
-	public function search($query) {
-		return $this->getWrapperStorage()->search($query);
-	}
-
-	/**
-	 * see https://www.php.net/manual/en/function.touch.php
-	 * If the backend does not support the operation, false should be returned
-	 *
-	 * @param string $path
-	 * @param int $mtime
-	 * @return bool
-	 */
-	public function touch($path, $mtime = null) {
-		return $this->getWrapperStorage()->touch($path, $mtime);
-	}
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getLocalFile($path) {
-		return $this->getWrapperStorage()->getLocalFile($path);
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 *
-	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
-	 * returning true for other changes in the folder is optional
-	 */
-	public function hasUpdated($path, $time) {
-		return $this->getWrapperStorage()->hasUpdated($path, $time);
-	}
-
-	/**
-	 * get a cache instance for the storage
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage|null (optional) the storage to pass to the cache
-	 * @return \OC\Files\Cache\Cache
-	 */
-	public function getCache($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getCache($path, $storage);
-	}
-
-	/**
-	 * get a scanner instance for the storage
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
-	 * @return \OC\Files\Cache\Scanner
-	 */
-	public function getScanner($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getScanner($path, $storage);
-	}
-
-
-	/**
-	 * get the user id of the owner of a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public function getOwner($path) {
-		return $this->getWrapperStorage()->getOwner($path);
-	}
-
-	/**
-	 * get a watcher instance for the cache
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the watcher
-	 * @return \OC\Files\Cache\Watcher
-	 */
-	public function getWatcher($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getWatcher($path, $storage);
-	}
-
-	public function getPropagator($storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getPropagator($storage);
-	}
-
-	public function getUpdater($storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		return $this->getWrapperStorage()->getUpdater($storage);
-	}
-
-	/**
-	 * @return \OC\Files\Cache\Storage
-	 */
-	public function getStorageCache() {
-		return $this->getWrapperStorage()->getStorageCache();
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getETag($path) {
-		return $this->getWrapperStorage()->getETag($path);
-	}
-
-	/**
-	 * Returns true
-	 *
-	 * @return true
-	 */
-	public function test() {
-		return $this->getWrapperStorage()->test();
-	}
-
-	/**
-	 * Returns the wrapped storage's value for isLocal()
-	 *
-	 * @return bool wrapped storage's isLocal() value
-	 */
-	public function isLocal() {
-		return $this->getWrapperStorage()->isLocal();
-	}
-
-	/**
-	 * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
-	 *
-	 * @param class-string<IStorage> $class
-	 * @return bool
-	 */
-	public function instanceOfStorage($class) {
-		if (ltrim($class, '\\') === 'OC\Files\Storage\Shared') {
-			// FIXME Temporary fix to keep existing checks working
-			$class = '\OCA\Files_Sharing\SharedStorage';
-		}
-		return is_a($this, $class) or $this->getWrapperStorage()->instanceOfStorage($class);
-	}
-
-	/**
-	 * @psalm-template T of IStorage
-	 * @psalm-param class-string<T> $class
-	 * @psalm-return T|null
-	 */
-	public function getInstanceOfStorage(string $class) {
-		$storage = $this;
-		while ($storage instanceof Wrapper) {
-			if ($storage instanceof $class) {
-				break;
-			}
-			$storage = $storage->getWrapperStorage();
-		}
-		if (!($storage instanceof $class)) {
-			return null;
-		}
-		return $storage;
-	}
-
-	/**
-	 * Pass any methods custom to specific storage implementations to the wrapped storage
-	 *
-	 * @param string $method
-	 * @param array $args
-	 * @return mixed
-	 */
-	public function __call($method, $args) {
-		return call_user_func_array([$this->getWrapperStorage(), $method], $args);
-	}
-
-	/**
-	 * A custom storage implementation can return an url for direct download of a give file.
-	 *
-	 * For now the returned array can hold the parameter url - in future more attributes might follow.
-	 *
-	 * @param string $path
-	 * @return array|bool
-	 */
-	public function getDirectDownload($path) {
-		return $this->getWrapperStorage()->getDirectDownload($path);
-	}
-
-	/**
-	 * Get availability of the storage
-	 *
-	 * @return array [ available, last_checked ]
-	 */
-	public function getAvailability() {
-		return $this->getWrapperStorage()->getAvailability();
-	}
-
-	/**
-	 * Set availability of the storage
-	 *
-	 * @param bool $isAvailable
-	 */
-	public function setAvailability($isAvailable) {
-		$this->getWrapperStorage()->setAvailability($isAvailable);
-	}
-
-	/**
-	 * @param string $path the path of the target folder
-	 * @param string $fileName the name of the file itself
-	 * @return void
-	 * @throws InvalidPathException
-	 */
-	public function verifyPath($path, $fileName) {
-		$this->getWrapperStorage()->verifyPath($path, $fileName);
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			return $this->copy($sourceInternalPath, $targetInternalPath);
-		}
-
-		return $this->getWrapperStorage()->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-	}
-
-	/**
-	 * @param IStorage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @return bool
-	 */
-	public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
-		if ($sourceStorage === $this) {
-			return $this->rename($sourceInternalPath, $targetInternalPath);
-		}
-
-		return $this->getWrapperStorage()->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-	}
-
-	public function getMetaData($path) {
-		return $this->getWrapperStorage()->getMetaData($path);
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 * @throws \OCP\Lock\LockedException
-	 */
-	public function acquireLock($path, $type, ILockingProvider $provider) {
-		if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-			$this->getWrapperStorage()->acquireLock($path, $type, $provider);
-		}
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 */
-	public function releaseLock($path, $type, ILockingProvider $provider) {
-		if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-			$this->getWrapperStorage()->releaseLock($path, $type, $provider);
-		}
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param \OCP\Lock\ILockingProvider $provider
-	 */
-	public function changeLock($path, $type, ILockingProvider $provider) {
-		if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-			$this->getWrapperStorage()->changeLock($path, $type, $provider);
-		}
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function needsPartFile() {
-		return $this->getWrapperStorage()->needsPartFile();
-	}
-
-	public function writeStream(string $path, $stream, int $size = null): int {
-		$storage = $this->getWrapperStorage();
-		if ($storage->instanceOfStorage(IWriteStreamStorage::class)) {
-			/** @var IWriteStreamStorage $storage */
-			return $storage->writeStream($path, $stream, $size);
-		} else {
-			$target = $this->fopen($path, 'w');
-			[$count, $result] = \OC_Helper::streamCopy($stream, $target);
-			fclose($stream);
-			fclose($target);
-			return $count;
-		}
-	}
-
-	public function getDirectoryContent($directory): \Traversable {
-		return $this->getWrapperStorage()->getDirectoryContent($directory);
-	}
+    /**
+     * @var \OC\Files\Storage\Storage $storage
+     */
+    protected $storage;
+
+    public $cache;
+    public $scanner;
+    public $watcher;
+    public $propagator;
+    public $updater;
+
+    /**
+     * @param array $parameters
+     */
+    public function __construct($parameters) {
+        $this->storage = $parameters['storage'];
+    }
+
+    /**
+     * @return \OC\Files\Storage\Storage
+     */
+    public function getWrapperStorage() {
+        return $this->storage;
+    }
+
+    /**
+     * Get the identifier for the storage,
+     * the returned id should be the same for every storage object that is created with the same parameters
+     * and two storage objects with the same id should refer to two storages that display the same files.
+     *
+     * @return string
+     */
+    public function getId() {
+        return $this->getWrapperStorage()->getId();
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.mkdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function mkdir($path) {
+        return $this->getWrapperStorage()->mkdir($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function rmdir($path) {
+        return $this->getWrapperStorage()->rmdir($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.opendir.php
+     *
+     * @param string $path
+     * @return resource|false
+     */
+    public function opendir($path) {
+        return $this->getWrapperStorage()->opendir($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_dir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_dir($path) {
+        return $this->getWrapperStorage()->is_dir($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.is_file.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function is_file($path) {
+        return $this->getWrapperStorage()->is_file($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array|bool
+     */
+    public function stat($path) {
+        return $this->getWrapperStorage()->stat($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filetype.php
+     *
+     * @param string $path
+     * @return string|bool
+     */
+    public function filetype($path) {
+        return $this->getWrapperStorage()->filetype($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     */
+    public function filesize($path): false|int|float {
+        return $this->getWrapperStorage()->filesize($path);
+    }
+
+    /**
+     * check if a file can be created in $path
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isCreatable($path) {
+        return $this->getWrapperStorage()->isCreatable($path);
+    }
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isReadable($path) {
+        return $this->getWrapperStorage()->isReadable($path);
+    }
+
+    /**
+     * check if a file can be written to
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isUpdatable($path) {
+        return $this->getWrapperStorage()->isUpdatable($path);
+    }
+
+    /**
+     * check if a file can be deleted
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isDeletable($path) {
+        return $this->getWrapperStorage()->isDeletable($path);
+    }
+
+    /**
+     * check if a file can be shared
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isSharable($path) {
+        return $this->getWrapperStorage()->isSharable($path);
+    }
+
+    /**
+     * get the full permissions of a path.
+     * Should return a combination of the PERMISSION_ constants defined in lib/public/constants.php
+     *
+     * @param string $path
+     * @return int
+     */
+    public function getPermissions($path) {
+        return $this->getWrapperStorage()->getPermissions($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_exists.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function file_exists($path) {
+        return $this->getWrapperStorage()->file_exists($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.filemtime.php
+     *
+     * @param string $path
+     * @return int|bool
+     */
+    public function filemtime($path) {
+        return $this->getWrapperStorage()->filemtime($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function file_get_contents($path) {
+        return $this->getWrapperStorage()->file_get_contents($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param mixed $data
+     * @return int|float|false
+     */
+    public function file_put_contents($path, $data) {
+        return $this->getWrapperStorage()->file_put_contents($path, $data);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function unlink($path) {
+        return $this->getWrapperStorage()->unlink($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.rename.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function rename($source, $target) {
+        return $this->getWrapperStorage()->rename($source, $target);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.copy.php
+     *
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    public function copy($source, $target) {
+        return $this->getWrapperStorage()->copy($source, $target);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     */
+    public function fopen($path, $mode) {
+        return $this->getWrapperStorage()->fopen($path, $mode);
+    }
+
+    /**
+     * get the mimetype for a file or folder
+     * The mimetype for a folder is required to be "httpd/unix-directory"
+     *
+     * @param string $path
+     * @return string|bool
+     */
+    public function getMimeType($path) {
+        return $this->getWrapperStorage()->getMimeType($path);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.hash.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string|bool
+     */
+    public function hash($type, $path, $raw = false) {
+        return $this->getWrapperStorage()->hash($type, $path, $raw);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.free_space.php
+     *
+     * @param string $path
+     * @return int|float|bool
+     */
+    public function free_space($path) {
+        return $this->getWrapperStorage()->free_space($path);
+    }
+
+    /**
+     * search for occurrences of $query in file names
+     *
+     * @param string $query
+     * @return array|bool
+     */
+    public function search($query) {
+        return $this->getWrapperStorage()->search($query);
+    }
+
+    /**
+     * see https://www.php.net/manual/en/function.touch.php
+     * If the backend does not support the operation, false should be returned
+     *
+     * @param string $path
+     * @param int $mtime
+     * @return bool
+     */
+    public function touch($path, $mtime = null) {
+        return $this->getWrapperStorage()->touch($path, $mtime);
+    }
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getLocalFile($path) {
+        return $this->getWrapperStorage()->getLocalFile($path);
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     *
+     * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+     * returning true for other changes in the folder is optional
+     */
+    public function hasUpdated($path, $time) {
+        return $this->getWrapperStorage()->hasUpdated($path, $time);
+    }
+
+    /**
+     * get a cache instance for the storage
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage|null (optional) the storage to pass to the cache
+     * @return \OC\Files\Cache\Cache
+     */
+    public function getCache($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getCache($path, $storage);
+    }
+
+    /**
+     * get a scanner instance for the storage
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
+     * @return \OC\Files\Cache\Scanner
+     */
+    public function getScanner($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getScanner($path, $storage);
+    }
+
+
+    /**
+     * get the user id of the owner of a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    public function getOwner($path) {
+        return $this->getWrapperStorage()->getOwner($path);
+    }
+
+    /**
+     * get a watcher instance for the cache
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the watcher
+     * @return \OC\Files\Cache\Watcher
+     */
+    public function getWatcher($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getWatcher($path, $storage);
+    }
+
+    public function getPropagator($storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getPropagator($storage);
+    }
+
+    public function getUpdater($storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        return $this->getWrapperStorage()->getUpdater($storage);
+    }
+
+    /**
+     * @return \OC\Files\Cache\Storage
+     */
+    public function getStorageCache() {
+        return $this->getWrapperStorage()->getStorageCache();
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getETag($path) {
+        return $this->getWrapperStorage()->getETag($path);
+    }
+
+    /**
+     * Returns true
+     *
+     * @return true
+     */
+    public function test() {
+        return $this->getWrapperStorage()->test();
+    }
+
+    /**
+     * Returns the wrapped storage's value for isLocal()
+     *
+     * @return bool wrapped storage's isLocal() value
+     */
+    public function isLocal() {
+        return $this->getWrapperStorage()->isLocal();
+    }
+
+    /**
+     * Check if the storage is an instance of $class or is a wrapper for a storage that is an instance of $class
+     *
+     * @param class-string<IStorage> $class
+     * @return bool
+     */
+    public function instanceOfStorage($class) {
+        if (ltrim($class, '\\') === 'OC\Files\Storage\Shared') {
+            // FIXME Temporary fix to keep existing checks working
+            $class = '\OCA\Files_Sharing\SharedStorage';
+        }
+        return is_a($this, $class) or $this->getWrapperStorage()->instanceOfStorage($class);
+    }
+
+    /**
+     * @psalm-template T of IStorage
+     * @psalm-param class-string<T> $class
+     * @psalm-return T|null
+     */
+    public function getInstanceOfStorage(string $class) {
+        $storage = $this;
+        while ($storage instanceof Wrapper) {
+            if ($storage instanceof $class) {
+                break;
+            }
+            $storage = $storage->getWrapperStorage();
+        }
+        if (!($storage instanceof $class)) {
+            return null;
+        }
+        return $storage;
+    }
+
+    /**
+     * Pass any methods custom to specific storage implementations to the wrapped storage
+     *
+     * @param string $method
+     * @param array $args
+     * @return mixed
+     */
+    public function __call($method, $args) {
+        return call_user_func_array([$this->getWrapperStorage(), $method], $args);
+    }
+
+    /**
+     * A custom storage implementation can return an url for direct download of a give file.
+     *
+     * For now the returned array can hold the parameter url - in future more attributes might follow.
+     *
+     * @param string $path
+     * @return array|bool
+     */
+    public function getDirectDownload($path) {
+        return $this->getWrapperStorage()->getDirectDownload($path);
+    }
+
+    /**
+     * Get availability of the storage
+     *
+     * @return array [ available, last_checked ]
+     */
+    public function getAvailability() {
+        return $this->getWrapperStorage()->getAvailability();
+    }
+
+    /**
+     * Set availability of the storage
+     *
+     * @param bool $isAvailable
+     */
+    public function setAvailability($isAvailable) {
+        $this->getWrapperStorage()->setAvailability($isAvailable);
+    }
+
+    /**
+     * @param string $path the path of the target folder
+     * @param string $fileName the name of the file itself
+     * @return void
+     * @throws InvalidPathException
+     */
+    public function verifyPath($path, $fileName) {
+        $this->getWrapperStorage()->verifyPath($path, $fileName);
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            return $this->copy($sourceInternalPath, $targetInternalPath);
+        }
+
+        return $this->getWrapperStorage()->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+    }
+
+    /**
+     * @param IStorage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @return bool
+     */
+    public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+        if ($sourceStorage === $this) {
+            return $this->rename($sourceInternalPath, $targetInternalPath);
+        }
+
+        return $this->getWrapperStorage()->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+    }
+
+    public function getMetaData($path) {
+        return $this->getWrapperStorage()->getMetaData($path);
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     * @throws \OCP\Lock\LockedException
+     */
+    public function acquireLock($path, $type, ILockingProvider $provider) {
+        if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+            $this->getWrapperStorage()->acquireLock($path, $type, $provider);
+        }
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     */
+    public function releaseLock($path, $type, ILockingProvider $provider) {
+        if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+            $this->getWrapperStorage()->releaseLock($path, $type, $provider);
+        }
+    }
+
+    /**
+     * @param string $path
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param \OCP\Lock\ILockingProvider $provider
+     */
+    public function changeLock($path, $type, ILockingProvider $provider) {
+        if ($this->getWrapperStorage()->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+            $this->getWrapperStorage()->changeLock($path, $type, $provider);
+        }
+    }
+
+    /**
+     * @return bool
+     */
+    public function needsPartFile() {
+        return $this->getWrapperStorage()->needsPartFile();
+    }
+
+    public function writeStream(string $path, $stream, int $size = null): int {
+        $storage = $this->getWrapperStorage();
+        if ($storage->instanceOfStorage(IWriteStreamStorage::class)) {
+            /** @var IWriteStreamStorage $storage */
+            return $storage->writeStream($path, $stream, $size);
+        } else {
+            $target = $this->fopen($path, 'w');
+            [$count, $result] = \OC_Helper::streamCopy($stream, $target);
+            fclose($stream);
+            fclose($target);
+            return $count;
+        }
+    }
+
+    public function getDirectoryContent($directory): \Traversable {
+        return $this->getWrapperStorage()->getDirectoryContent($directory);
+    }
 }

lib/private/Files/View.php

Indentation +2072 added lines, -2072 removed lines

@@ -87,2076 +87,2076 @@
  * \OC\Files\Storage\Storage object
  */
 class View {
-	private string $fakeRoot = '';
-	private ILockingProvider $lockingProvider;
-	private bool $lockingEnabled;
-	private bool $updaterEnabled = true;
-	private UserManager $userManager;
-	private LoggerInterface $logger;
-
-	/**
-	 * @throws \Exception If $root contains an invalid path
-	 */
-	public function __construct(string $root = '') {
-		if (!Filesystem::isValidPath($root)) {
-			throw new \Exception();
-		}
-
-		$this->fakeRoot = $root;
-		$this->lockingProvider = \OC::$server->getLockingProvider();
-		$this->lockingEnabled = !($this->lockingProvider instanceof \OC\Lock\NoopLockingProvider);
-		$this->userManager = \OC::$server->getUserManager();
-		$this->logger = \OC::$server->get(LoggerInterface::class);
-	}
-
-	/**
-	 * @param ?string $path
-	 * @psalm-template S as string|null
-	 * @psalm-param S $path
-	 * @psalm-return (S is string ? string : null)
-	 */
-	public function getAbsolutePath($path = '/'): ?string {
-		if ($path === null) {
-			return null;
-		}
-		$this->assertPathLength($path);
-		if ($path === '') {
-			$path = '/';
-		}
-		if ($path[0] !== '/') {
-			$path = '/' . $path;
-		}
-		return $this->fakeRoot . $path;
-	}
-
-	/**
-	 * Change the root to a fake root
-	 *
-	 * @param string $fakeRoot
-	 */
-	public function chroot($fakeRoot): void {
-		if (!$fakeRoot == '') {
-			if ($fakeRoot[0] !== '/') {
-				$fakeRoot = '/' . $fakeRoot;
-			}
-		}
-		$this->fakeRoot = $fakeRoot;
-	}
-
-	/**
-	 * Get the fake root
-	 */
-	public function getRoot(): string {
-		return $this->fakeRoot;
-	}
-
-	/**
-	 * get path relative to the root of the view
-	 *
-	 * @param string $path
-	 */
-	public function getRelativePath($path): ?string {
-		$this->assertPathLength($path);
-		if ($this->fakeRoot == '') {
-			return $path;
-		}
-
-		if (rtrim($path, '/') === rtrim($this->fakeRoot, '/')) {
-			return '/';
-		}
-
-		// missing slashes can cause wrong matches!
-		$root = rtrim($this->fakeRoot, '/') . '/';
-
-		if (strpos($path, $root) !== 0) {
-			return null;
-		} else {
-			$path = substr($path, strlen($this->fakeRoot));
-			if (strlen($path) === 0) {
-				return '/';
-			} else {
-				return $path;
-			}
-		}
-	}
-
-	/**
-	 * 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 does not take the chroot into account )
-	 *
-	 * @param string $path
-	 */
-	public function getMountPoint($path): string {
-		return Filesystem::getMountPoint($this->getAbsolutePath($path));
-	}
-
-	/**
-	 * 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 does not take the chroot into account )
-	 *
-	 * @param string $path
-	 */
-	public function getMount($path): IMountPoint {
-		return Filesystem::getMountManager()->find($this->getAbsolutePath($path));
-	}
-
-	/**
-	 * Resolve a path to a storage and internal path
-	 *
-	 * @param string $path
-	 * @return array{?\OCP\Files\Storage\IStorage, string} an array consisting of the storage and the internal path
-	 */
-	public function resolvePath($path): array {
-		$a = $this->getAbsolutePath($path);
-		$p = Filesystem::normalizePath($a);
-		return Filesystem::resolvePath($p);
-	}
-
-	/**
-	 * 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 $path
-	 */
-	public function getLocalFile($path): string|false {
-		$parent = substr($path, 0, strrpos($path, '/') ?: 0);
-		$path = $this->getAbsolutePath($path);
-		[$storage, $internalPath] = Filesystem::resolvePath($path);
-		if (Filesystem::isValidPath($parent) && $storage) {
-			return $storage->getLocalFile($internalPath);
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * the following functions operate with arguments and return values identical
-	 * to those of their PHP built-in equivalents. Mostly they are merely wrappers
-	 * for \OC\Files\Storage\Storage via basicOperation().
-	 */
-	public function mkdir($path) {
-		return $this->basicOperation('mkdir', $path, ['create', 'write']);
-	}
-
-	/**
-	 * remove mount point
-	 *
-	 * @param IMountPoint $mount
-	 * @param string $path relative to data/
-	 */
-	protected function removeMount($mount, $path): bool {
-		if ($mount instanceof MoveableMount) {
-			// cut of /user/files to get the relative path to data/user/files
-			$pathParts = explode('/', $path, 4);
-			$relPath = '/' . $pathParts[3];
-			$this->lockFile($relPath, ILockingProvider::LOCK_SHARED, true);
-			\OC_Hook::emit(
-				Filesystem::CLASSNAME, "umount",
-				[Filesystem::signal_param_path => $relPath]
-			);
-			$this->changeLock($relPath, ILockingProvider::LOCK_EXCLUSIVE, true);
-			$result = $mount->removeMount();
-			$this->changeLock($relPath, ILockingProvider::LOCK_SHARED, true);
-			if ($result) {
-				\OC_Hook::emit(
-					Filesystem::CLASSNAME, "post_umount",
-					[Filesystem::signal_param_path => $relPath]
-				);
-			}
-			$this->unlockFile($relPath, ILockingProvider::LOCK_SHARED, true);
-			return $result;
-		} else {
-			// do not allow deleting the storage's root / the mount point
-			// because for some storages it might delete the whole contents
-			// but isn't supposed to work that way
-			return false;
-		}
-	}
-
-	public function disableCacheUpdate(): void {
-		$this->updaterEnabled = false;
-	}
-
-	public function enableCacheUpdate(): void {
-		$this->updaterEnabled = true;
-	}
-
-	protected function writeUpdate(Storage $storage, string $internalPath, ?int $time = null): void {
-		if ($this->updaterEnabled) {
-			if (is_null($time)) {
-				$time = time();
-			}
-			$storage->getUpdater()->update($internalPath, $time);
-		}
-	}
-
-	protected function removeUpdate(Storage $storage, string $internalPath): void {
-		if ($this->updaterEnabled) {
-			$storage->getUpdater()->remove($internalPath);
-		}
-	}
-
-	protected function renameUpdate(Storage $sourceStorage, Storage $targetStorage, string $sourceInternalPath, string $targetInternalPath): void {
-		if ($this->updaterEnabled) {
-			$targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-		}
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function rmdir($path) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$mount = Filesystem::getMountManager()->find($absolutePath);
-		if ($mount->getInternalPath($absolutePath) === '') {
-			return $this->removeMount($mount, $absolutePath);
-		}
-		if ($this->is_dir($path)) {
-			$result = $this->basicOperation('rmdir', $path, ['delete']);
-		} else {
-			$result = false;
-		}
-
-		if (!$result && !$this->file_exists($path)) { //clear ghost files from the cache on delete
-			$storage = $mount->getStorage();
-			$internalPath = $mount->getInternalPath($absolutePath);
-			$storage->getUpdater()->remove($internalPath);
-		}
-		return $result;
-	}
-
-	/**
-	 * @param string $path
-	 * @return resource|false
-	 */
-	public function opendir($path) {
-		return $this->basicOperation('opendir', $path, ['read']);
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function is_dir($path) {
-		if ($path == '/') {
-			return true;
-		}
-		return $this->basicOperation('is_dir', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function is_file($path) {
-		if ($path == '/') {
-			return false;
-		}
-		return $this->basicOperation('is_file', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function stat($path) {
-		return $this->basicOperation('stat', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function filetype($path) {
-		return $this->basicOperation('filetype', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function filesize(string $path) {
-		return $this->basicOperation('filesize', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 * @throws InvalidPathException
-	 */
-	public function readfile($path) {
-		$this->assertPathLength($path);
-		if (ob_get_level()) {
-			ob_end_clean();
-		}
-		$handle = $this->fopen($path, 'rb');
-		if ($handle) {
-			$chunkSize = 524288; // 512 kB chunks
-			while (!feof($handle)) {
-				echo fread($handle, $chunkSize);
-				flush();
-			}
-			fclose($handle);
-			return $this->filesize($path);
-		}
-		return false;
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $from
-	 * @param int $to
-	 * @return bool|mixed
-	 * @throws InvalidPathException
-	 * @throws \OCP\Files\UnseekableException
-	 */
-	public function readfilePart($path, $from, $to) {
-		$this->assertPathLength($path);
-		if (ob_get_level()) {
-			ob_end_clean();
-		}
-		$handle = $this->fopen($path, 'rb');
-		if ($handle) {
-			$chunkSize = 524288; // 512 kB chunks
-			$startReading = true;
-
-			if ($from !== 0 && $from !== '0' && fseek($handle, $from) !== 0) {
-				// forward file handle via chunked fread because fseek seem to have failed
-
-				$end = $from + 1;
-				while (!feof($handle) && ftell($handle) < $end && ftell($handle) !== $from) {
-					$len = $from - ftell($handle);
-					if ($len > $chunkSize) {
-						$len = $chunkSize;
-					}
-					$result = fread($handle, $len);
-
-					if ($result === false) {
-						$startReading = false;
-						break;
-					}
-				}
-			}
-
-			if ($startReading) {
-				$end = $to + 1;
-				while (!feof($handle) && ftell($handle) < $end) {
-					$len = $end - ftell($handle);
-					if ($len > $chunkSize) {
-						$len = $chunkSize;
-					}
-					echo fread($handle, $len);
-					flush();
-				}
-				return ftell($handle) - $from;
-			}
-
-			throw new \OCP\Files\UnseekableException('fseek error');
-		}
-		return false;
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function isCreatable($path) {
-		return $this->basicOperation('isCreatable', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function isReadable($path) {
-		return $this->basicOperation('isReadable', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function isUpdatable($path) {
-		return $this->basicOperation('isUpdatable', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function isDeletable($path) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$mount = Filesystem::getMountManager()->find($absolutePath);
-		if ($mount->getInternalPath($absolutePath) === '') {
-			return $mount instanceof MoveableMount;
-		}
-		return $this->basicOperation('isDeletable', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function isSharable($path) {
-		return $this->basicOperation('isSharable', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function file_exists($path) {
-		if ($path == '/') {
-			return true;
-		}
-		return $this->basicOperation('file_exists', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 */
-	public function filemtime($path) {
-		return $this->basicOperation('filemtime', $path);
-	}
-
-	/**
-	 * @param string $path
-	 * @param int|string $mtime
-	 */
-	public function touch($path, $mtime = null): bool {
-		if (!is_null($mtime) && !is_numeric($mtime)) {
-			$mtime = strtotime($mtime);
-		}
-
-		$hooks = ['touch'];
-
-		if (!$this->file_exists($path)) {
-			$hooks[] = 'create';
-			$hooks[] = 'write';
-		}
-		try {
-			$result = $this->basicOperation('touch', $path, $hooks, $mtime);
-		} catch (\Exception $e) {
-			$this->logger->info('Error while setting modified time', ['app' => 'core', 'exception' => $e]);
-			$result = false;
-		}
-		if (!$result) {
-			// If create file fails because of permissions on external storage like SMB folders,
-			// check file exists and return false if not.
-			if (!$this->file_exists($path)) {
-				return false;
-			}
-			if (is_null($mtime)) {
-				$mtime = time();
-			}
-			//if native touch fails, we emulate it by changing the mtime in the cache
-			$this->putFileInfo($path, ['mtime' => floor($mtime)]);
-		}
-		return true;
-	}
-
-	/**
-	 * @param string $path
-	 * @return string|false
-	 * @throws LockedException
-	 */
-	public function file_get_contents($path) {
-		return $this->basicOperation('file_get_contents', $path, ['read']);
-	}
-
-	protected function emit_file_hooks_pre(bool $exists, string $path, bool &$run): void {
-		if (!$exists) {
-			\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_create, [
-				Filesystem::signal_param_path => $this->getHookPath($path),
-				Filesystem::signal_param_run => &$run,
-			]);
-		} else {
-			\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_update, [
-				Filesystem::signal_param_path => $this->getHookPath($path),
-				Filesystem::signal_param_run => &$run,
-			]);
-		}
-		\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_write, [
-			Filesystem::signal_param_path => $this->getHookPath($path),
-			Filesystem::signal_param_run => &$run,
-		]);
-	}
-
-	protected function emit_file_hooks_post(bool $exists, string $path): void {
-		if (!$exists) {
-			\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_create, [
-				Filesystem::signal_param_path => $this->getHookPath($path),
-			]);
-		} else {
-			\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_update, [
-				Filesystem::signal_param_path => $this->getHookPath($path),
-			]);
-		}
-		\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_write, [
-			Filesystem::signal_param_path => $this->getHookPath($path),
-		]);
-	}
-
-	/**
-	 * @param string $path
-	 * @param string|resource $data
-	 * @return bool|mixed
-	 * @throws LockedException
-	 */
-	public function file_put_contents($path, $data) {
-		if (is_resource($data)) { //not having to deal with streams in file_put_contents makes life easier
-			$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
-			if (Filesystem::isValidPath($path)
-				&& !Filesystem::isFileBlacklisted($path)
-			) {
-				$path = $this->getRelativePath($absolutePath);
-				if ($path === null) {
-					throw new InvalidPathException("Path $absolutePath is not in the expected root");
-				}
-
-				$this->lockFile($path, ILockingProvider::LOCK_SHARED);
-
-				$exists = $this->file_exists($path);
-				$run = true;
-				if ($this->shouldEmitHooks($path)) {
-					$this->emit_file_hooks_pre($exists, $path, $run);
-				}
-				if (!$run) {
-					$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-					return false;
-				}
-
-				try {
-					$this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
-				} catch (\Exception $e) {
-					// Release the shared lock before throwing.
-					$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-					throw $e;
-				}
-
-				/** @var Storage $storage */
-				[$storage, $internalPath] = $this->resolvePath($path);
-				$target = $storage->fopen($internalPath, 'w');
-				if ($target) {
-					[, $result] = \OC_Helper::streamCopy($data, $target);
-					fclose($target);
-					fclose($data);
-
-					$this->writeUpdate($storage, $internalPath);
-
-					$this->changeLock($path, ILockingProvider::LOCK_SHARED);
-
-					if ($this->shouldEmitHooks($path) && $result !== false) {
-						$this->emit_file_hooks_post($exists, $path);
-					}
-					$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-					return $result;
-				} else {
-					$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
-					return false;
-				}
-			} else {
-				return false;
-			}
-		} else {
-			$hooks = $this->file_exists($path) ? ['update', 'write'] : ['create', 'write'];
-			return $this->basicOperation('file_put_contents', $path, $hooks, $data);
-		}
-	}
-
-	/**
-	 * @param string $path
-	 * @return bool|mixed
-	 */
-	public function unlink($path) {
-		if ($path === '' || $path === '/') {
-			// do not allow deleting the root
-			return false;
-		}
-		$postFix = (substr($path, -1) === '/') ? '/' : '';
-		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
-		$mount = Filesystem::getMountManager()->find($absolutePath . $postFix);
-		if ($mount->getInternalPath($absolutePath) === '') {
-			return $this->removeMount($mount, $absolutePath);
-		}
-		if ($this->is_dir($path)) {
-			$result = $this->basicOperation('rmdir', $path, ['delete']);
-		} else {
-			$result = $this->basicOperation('unlink', $path, ['delete']);
-		}
-		if (!$result && !$this->file_exists($path)) { //clear ghost files from the cache on delete
-			$storage = $mount->getStorage();
-			$internalPath = $mount->getInternalPath($absolutePath);
-			$storage->getUpdater()->remove($internalPath);
-			return true;
-		} else {
-			return $result;
-		}
-	}
-
-	/**
-	 * @param string $directory
-	 * @return bool|mixed
-	 */
-	public function deleteAll($directory) {
-		return $this->rmdir($directory);
-	}
-
-	/**
-	 * Rename/move a file or folder from the source path to target path.
-	 *
-	 * @param string $source source path
-	 * @param string $target target path
-	 *
-	 * @return bool|mixed
-	 * @throws LockedException
-	 */
-	public function rename($source, $target) {
-		$absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($source));
-		$absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($target));
-		$result = false;
-		if (
-			Filesystem::isValidPath($target)
-			&& Filesystem::isValidPath($source)
-			&& !Filesystem::isFileBlacklisted($target)
-		) {
-			$source = $this->getRelativePath($absolutePath1);
-			$target = $this->getRelativePath($absolutePath2);
-			$exists = $this->file_exists($target);
-
-			if ($source == null || $target == null) {
-				return false;
-			}
-
-			$this->lockFile($source, ILockingProvider::LOCK_SHARED, true);
-			try {
-				$this->lockFile($target, ILockingProvider::LOCK_SHARED, true);
-
-				$run = true;
-				if ($this->shouldEmitHooks($source) && (Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target))) {
-					// if it was a rename from a part file to a regular file it was a write and not a rename operation
-					$this->emit_file_hooks_pre($exists, $target, $run);
-				} elseif ($this->shouldEmitHooks($source)) {
-					\OC_Hook::emit(
-						Filesystem::CLASSNAME, Filesystem::signal_rename,
-						[
-							Filesystem::signal_param_oldpath => $this->getHookPath($source),
-							Filesystem::signal_param_newpath => $this->getHookPath($target),
-							Filesystem::signal_param_run => &$run
-						]
-					);
-				}
-				if ($run) {
-					$this->verifyPath(dirname($target), basename($target));
-
-					$manager = Filesystem::getMountManager();
-					$mount1 = $this->getMount($source);
-					$mount2 = $this->getMount($target);
-					$storage1 = $mount1->getStorage();
-					$storage2 = $mount2->getStorage();
-					$internalPath1 = $mount1->getInternalPath($absolutePath1);
-					$internalPath2 = $mount2->getInternalPath($absolutePath2);
-
-					$this->changeLock($source, ILockingProvider::LOCK_EXCLUSIVE, true);
-					try {
-						$this->changeLock($target, ILockingProvider::LOCK_EXCLUSIVE, true);
-
-						if ($internalPath1 === '') {
-							if ($mount1 instanceof MoveableMount) {
-								$sourceParentMount = $this->getMount(dirname($source));
-								if ($sourceParentMount === $mount2 && $this->targetIsNotShared($storage2, $internalPath2)) {
-									/**
-									 * @var \OC\Files\Mount\MountPoint | \OC\Files\Mount\MoveableMount $mount1
-									 */
-									$sourceMountPoint = $mount1->getMountPoint();
-									$result = $mount1->moveMount($absolutePath2);
-									$manager->moveMount($sourceMountPoint, $mount1->getMountPoint());
-								} else {
-									$result = false;
-								}
-							} else {
-								$result = false;
-							}
-						// moving a file/folder within the same mount point
-						} elseif ($storage1 === $storage2) {
-							if ($storage1) {
-								$result = $storage1->rename($internalPath1, $internalPath2);
-							} else {
-								$result = false;
-							}
-						// moving a file/folder between storages (from $storage1 to $storage2)
-						} else {
-							$result = $storage2->moveFromStorage($storage1, $internalPath1, $internalPath2);
-						}
-
-						if ((Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target)) && $result !== false) {
-							// if it was a rename from a part file to a regular file it was a write and not a rename operation
-							$this->writeUpdate($storage2, $internalPath2);
-						} elseif ($result) {
-							if ($internalPath1 !== '') { // don't do a cache update for moved mounts
-								$this->renameUpdate($storage1, $storage2, $internalPath1, $internalPath2);
-							}
-						}
-					} catch (\Exception $e) {
-						throw $e;
-					} finally {
-						$this->changeLock($source, ILockingProvider::LOCK_SHARED, true);
-						$this->changeLock($target, ILockingProvider::LOCK_SHARED, true);
-					}
-
-					if ((Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target)) && $result !== false) {
-						if ($this->shouldEmitHooks()) {
-							$this->emit_file_hooks_post($exists, $target);
-						}
-					} elseif ($result) {
-						if ($this->shouldEmitHooks($source) && $this->shouldEmitHooks($target)) {
-							\OC_Hook::emit(
-								Filesystem::CLASSNAME,
-								Filesystem::signal_post_rename,
-								[
-									Filesystem::signal_param_oldpath => $this->getHookPath($source),
-									Filesystem::signal_param_newpath => $this->getHookPath($target)
-								]
-							);
-						}
-					}
-				}
-			} catch (\Exception $e) {
-				throw $e;
-			} finally {
-				$this->unlockFile($source, ILockingProvider::LOCK_SHARED, true);
-				$this->unlockFile($target, ILockingProvider::LOCK_SHARED, true);
-			}
-		}
-		return $result;
-	}
-
-	/**
-	 * Copy a file/folder from the source path to target path
-	 *
-	 * @param string $source source path
-	 * @param string $target target path
-	 * @param bool $preserveMtime whether to preserve mtime on the copy
-	 *
-	 * @return bool|mixed
-	 */
-	public function copy($source, $target, $preserveMtime = false) {
-		$absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($source));
-		$absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($target));
-		$result = false;
-		if (
-			Filesystem::isValidPath($target)
-			&& Filesystem::isValidPath($source)
-			&& !Filesystem::isFileBlacklisted($target)
-		) {
-			$source = $this->getRelativePath($absolutePath1);
-			$target = $this->getRelativePath($absolutePath2);
-
-			if ($source == null || $target == null) {
-				return false;
-			}
-			$run = true;
-
-			$this->lockFile($target, ILockingProvider::LOCK_SHARED);
-			$this->lockFile($source, ILockingProvider::LOCK_SHARED);
-			$lockTypePath1 = ILockingProvider::LOCK_SHARED;
-			$lockTypePath2 = ILockingProvider::LOCK_SHARED;
-
-			try {
-				$exists = $this->file_exists($target);
-				if ($this->shouldEmitHooks()) {
-					\OC_Hook::emit(
-						Filesystem::CLASSNAME,
-						Filesystem::signal_copy,
-						[
-							Filesystem::signal_param_oldpath => $this->getHookPath($source),
-							Filesystem::signal_param_newpath => $this->getHookPath($target),
-							Filesystem::signal_param_run => &$run
-						]
-					);
-					$this->emit_file_hooks_pre($exists, $target, $run);
-				}
-				if ($run) {
-					$mount1 = $this->getMount($source);
-					$mount2 = $this->getMount($target);
-					$storage1 = $mount1->getStorage();
-					$internalPath1 = $mount1->getInternalPath($absolutePath1);
-					$storage2 = $mount2->getStorage();
-					$internalPath2 = $mount2->getInternalPath($absolutePath2);
-
-					$this->changeLock($target, ILockingProvider::LOCK_EXCLUSIVE);
-					$lockTypePath2 = ILockingProvider::LOCK_EXCLUSIVE;
-
-					if ($mount1->getMountPoint() == $mount2->getMountPoint()) {
-						if ($storage1) {
-							$result = $storage1->copy($internalPath1, $internalPath2);
-						} else {
-							$result = false;
-						}
-					} else {
-						$result = $storage2->copyFromStorage($storage1, $internalPath1, $internalPath2);
-					}
-
-					$this->writeUpdate($storage2, $internalPath2);
-
-					$this->changeLock($target, ILockingProvider::LOCK_SHARED);
-					$lockTypePath2 = ILockingProvider::LOCK_SHARED;
-
-					if ($this->shouldEmitHooks() && $result !== false) {
-						\OC_Hook::emit(
-							Filesystem::CLASSNAME,
-							Filesystem::signal_post_copy,
-							[
-								Filesystem::signal_param_oldpath => $this->getHookPath($source),
-								Filesystem::signal_param_newpath => $this->getHookPath($target)
-							]
-						);
-						$this->emit_file_hooks_post($exists, $target);
-					}
-				}
-			} catch (\Exception $e) {
-				$this->unlockFile($target, $lockTypePath2);
-				$this->unlockFile($source, $lockTypePath1);
-				throw $e;
-			}
-
-			$this->unlockFile($target, $lockTypePath2);
-			$this->unlockFile($source, $lockTypePath1);
-		}
-		return $result;
-	}
-
-	/**
-	 * @param string $path
-	 * @param string $mode 'r' or 'w'
-	 * @return resource|false
-	 * @throws LockedException
-	 */
-	public function fopen($path, $mode) {
-		$mode = str_replace('b', '', $mode); // the binary flag is a windows only feature which we do not support
-		$hooks = [];
-		switch ($mode) {
-			case 'r':
-				$hooks[] = 'read';
-				break;
-			case 'r+':
-			case 'w+':
-			case 'x+':
-			case 'a+':
-				$hooks[] = 'read';
-				$hooks[] = 'write';
-				break;
-			case 'w':
-			case 'x':
-			case 'a':
-				$hooks[] = 'write';
-				break;
-			default:
-				$this->logger->error('invalid mode (' . $mode . ') for ' . $path, ['app' => 'core']);
-		}
-
-		if ($mode !== 'r' && $mode !== 'w') {
-			$this->logger->info('Trying to open a file with a mode other than "r" or "w" can cause severe performance issues with some backends', ['app' => 'core']);
-		}
-
-		$handle = $this->basicOperation('fopen', $path, $hooks, $mode);
-		if (!is_resource($handle) && $mode === 'r') {
-			// trying to read a file that isn't on disk, check if the cache is out of sync and rescan if needed
-			$mount = $this->getMount($path);
-			$internalPath = $mount->getInternalPath($this->getAbsolutePath($path));
-			$storage = $mount->getStorage();
-			if ($storage->getCache()->inCache($internalPath) && !$storage->file_exists($path)) {
-				$this->writeUpdate($storage, $internalPath);
-			}
-		}
-		return $handle;
-	}
-
-	/**
-	 * @param string $path
-	 * @throws InvalidPathException
-	 */
-	public function toTmpFile($path): string|false {
-		$this->assertPathLength($path);
-		if (Filesystem::isValidPath($path)) {
-			$source = $this->fopen($path, 'r');
-			if ($source) {
-				$extension = pathinfo($path, PATHINFO_EXTENSION);
-				$tmpFile = \OC::$server->getTempManager()->getTemporaryFile($extension);
-				file_put_contents($tmpFile, $source);
-				return $tmpFile;
-			} else {
-				return false;
-			}
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * @param string $tmpFile
-	 * @param string $path
-	 * @return bool|mixed
-	 * @throws InvalidPathException
-	 */
-	public function fromTmpFile($tmpFile, $path) {
-		$this->assertPathLength($path);
-		if (Filesystem::isValidPath($path)) {
-			// Get directory that the file is going into
-			$filePath = dirname($path);
-
-			// Create the directories if any
-			if (!$this->file_exists($filePath)) {
-				$result = $this->createParentDirectories($filePath);
-				if ($result === false) {
-					return false;
-				}
-			}
-
-			$source = fopen($tmpFile, 'r');
-			if ($source) {
-				$result = $this->file_put_contents($path, $source);
-				/**
-				 * $this->file_put_contents() might have already closed
-				 * the resource, so we check it, before trying to close it
-				 * to avoid messages in the error log.
-				 * @psalm-suppress RedundantCondition false-positive
-				 */
-				if (is_resource($source)) {
-					fclose($source);
-				}
-				unlink($tmpFile);
-				return $result;
-			} else {
-				return false;
-			}
-		} else {
-			return false;
-		}
-	}
-
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 * @throws InvalidPathException
-	 */
-	public function getMimeType($path) {
-		$this->assertPathLength($path);
-		return $this->basicOperation('getMimeType', $path);
-	}
-
-	/**
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 */
-	public function hash($type, $path, $raw = false): string|bool {
-		$postFix = (substr($path, -1) === '/') ? '/' : '';
-		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
-		if (Filesystem::isValidPath($path)) {
-			$path = $this->getRelativePath($absolutePath);
-			if ($path == null) {
-				return false;
-			}
-			if ($this->shouldEmitHooks($path)) {
-				\OC_Hook::emit(
-					Filesystem::CLASSNAME,
-					Filesystem::signal_read,
-					[Filesystem::signal_param_path => $this->getHookPath($path)]
-				);
-			}
-			/** @var Storage|null $storage */
-			[$storage, $internalPath] = Filesystem::resolvePath($absolutePath . $postFix);
-			if ($storage) {
-				return $storage->hash($type, $internalPath, $raw);
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * @param string $path
-	 * @return mixed
-	 * @throws InvalidPathException
-	 */
-	public function free_space($path = '/') {
-		$this->assertPathLength($path);
-		$result = $this->basicOperation('free_space', $path);
-		if ($result === null) {
-			throw new InvalidPathException();
-		}
-		return $result;
-	}
-
-	/**
-	 * abstraction layer for basic filesystem functions: wrapper for \OC\Files\Storage\Storage
-	 *
-	 * @param mixed $extraParam (optional)
-	 * @return mixed
-	 * @throws LockedException
-	 *
-	 * This method takes requests for basic filesystem functions (e.g. reading & writing
-	 * files), processes hooks and proxies, sanitises paths, and finally passes them on to
-	 * \OC\Files\Storage\Storage for delegation to a storage backend for execution
-	 */
-	private function basicOperation(string $operation, string $path, array $hooks = [], $extraParam = null) {
-		$postFix = (substr($path, -1) === '/') ? '/' : '';
-		$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
-		if (Filesystem::isValidPath($path)
-			&& !Filesystem::isFileBlacklisted($path)
-		) {
-			$path = $this->getRelativePath($absolutePath);
-			if ($path == null) {
-				return false;
-			}
-
-			if (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks)) {
-				// always a shared lock during pre-hooks so the hook can read the file
-				$this->lockFile($path, ILockingProvider::LOCK_SHARED);
-			}
-
-			$run = $this->runHooks($hooks, $path);
-			[$storage, $internalPath] = Filesystem::resolvePath($absolutePath . $postFix);
-			if ($run && $storage) {
-				/** @var Storage $storage */
-				if (in_array('write', $hooks) || in_array('delete', $hooks)) {
-					try {
-						$this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
-					} catch (LockedException $e) {
-						// release the shared lock we acquired before quitting
-						$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-						throw $e;
-					}
-				}
-				try {
-					if (!is_null($extraParam)) {
-						$result = $storage->$operation($internalPath, $extraParam);
-					} else {
-						$result = $storage->$operation($internalPath);
-					}
-				} catch (\Exception $e) {
-					if (in_array('write', $hooks) || in_array('delete', $hooks)) {
-						$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
-					} elseif (in_array('read', $hooks)) {
-						$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-					}
-					throw $e;
-				}
-
-				if ($result !== false && in_array('delete', $hooks)) {
-					$this->removeUpdate($storage, $internalPath);
-				}
-				if ($result !== false && in_array('write', $hooks, true) && $operation !== 'fopen' && $operation !== 'touch') {
-					$this->writeUpdate($storage, $internalPath);
-				}
-				if ($result !== false && in_array('touch', $hooks)) {
-					$this->writeUpdate($storage, $internalPath, $extraParam);
-				}
-
-				if ((in_array('write', $hooks) || in_array('delete', $hooks)) && ($operation !== 'fopen' || $result === false)) {
-					$this->changeLock($path, ILockingProvider::LOCK_SHARED);
-				}
-
-				$unlockLater = false;
-				if ($this->lockingEnabled && $operation === 'fopen' && is_resource($result)) {
-					$unlockLater = true;
-					// make sure our unlocking callback will still be called if connection is aborted
-					ignore_user_abort(true);
-					$result = CallbackWrapper::wrap($result, null, null, function () use ($hooks, $path) {
-						if (in_array('write', $hooks)) {
-							$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
-						} elseif (in_array('read', $hooks)) {
-							$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-						}
-					});
-				}
-
-				if ($this->shouldEmitHooks($path) && $result !== false) {
-					if ($operation != 'fopen') { //no post hooks for fopen, the file stream is still open
-						$this->runHooks($hooks, $path, true);
-					}
-				}
-
-				if (!$unlockLater
-					&& (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks))
-				) {
-					$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-				}
-				return $result;
-			} else {
-				$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
-			}
-		}
-		return null;
-	}
-
-	/**
-	 * get the path relative to the default root for hook usage
-	 *
-	 * @param string $path
-	 * @return ?string
-	 */
-	private function getHookPath($path): ?string {
-		$view = Filesystem::getView();
-		if (!$view) {
-			return $path;
-		}
-		return $view->getRelativePath($this->getAbsolutePath($path));
-	}
-
-	private function shouldEmitHooks(string $path = ''): bool {
-		if ($path && Cache\Scanner::isPartialFile($path)) {
-			return false;
-		}
-		if (!Filesystem::$loaded) {
-			return false;
-		}
-		$defaultRoot = Filesystem::getRoot();
-		if ($defaultRoot === null) {
-			return false;
-		}
-		if ($this->fakeRoot === $defaultRoot) {
-			return true;
-		}
-		$fullPath = $this->getAbsolutePath($path);
-
-		if ($fullPath === $defaultRoot) {
-			return true;
-		}
-
-		return (strlen($fullPath) > strlen($defaultRoot)) && (substr($fullPath, 0, strlen($defaultRoot) + 1) === $defaultRoot . '/');
-	}
-
-	/**
-	 * @param string[] $hooks
-	 * @param string $path
-	 * @param bool $post
-	 * @return bool
-	 */
-	private function runHooks($hooks, $path, $post = false) {
-		$relativePath = $path;
-		$path = $this->getHookPath($path);
-		$prefix = $post ? 'post_' : '';
-		$run = true;
-		if ($this->shouldEmitHooks($relativePath)) {
-			foreach ($hooks as $hook) {
-				if ($hook != 'read') {
-					\OC_Hook::emit(
-						Filesystem::CLASSNAME,
-						$prefix . $hook,
-						[
-							Filesystem::signal_param_run => &$run,
-							Filesystem::signal_param_path => $path
-						]
-					);
-				} elseif (!$post) {
-					\OC_Hook::emit(
-						Filesystem::CLASSNAME,
-						$prefix . $hook,
-						[
-							Filesystem::signal_param_path => $path
-						]
-					);
-				}
-			}
-		}
-		return $run;
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 */
-	public function hasUpdated($path, $time) {
-		return $this->basicOperation('hasUpdated', $path, [], $time);
-	}
-
-	/**
-	 * @param string $ownerId
-	 * @return IUser
-	 */
-	private function getUserObjectForOwner(string $ownerId) {
-		return new LazyUser($ownerId, $this->userManager);
-	}
-
-	/**
-	 * Get file info from cache
-	 *
-	 * If the file is not in cached it will be scanned
-	 * If the file has changed on storage the cache will be updated
-	 *
-	 * @param Storage $storage
-	 * @param string $internalPath
-	 * @param string $relativePath
-	 * @return ICacheEntry|bool
-	 */
-	private function getCacheEntry($storage, $internalPath, $relativePath) {
-		$cache = $storage->getCache($internalPath);
-		$data = $cache->get($internalPath);
-		$watcher = $storage->getWatcher($internalPath);
-
-		try {
-			// if the file is not in the cache or needs to be updated, trigger the scanner and reload the data
-			if (!$data || (isset($data['size']) && $data['size'] === -1)) {
-				if (!$storage->file_exists($internalPath)) {
-					return false;
-				}
-				// don't need to get a lock here since the scanner does it's own locking
-				$scanner = $storage->getScanner($internalPath);
-				$scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
-				$data = $cache->get($internalPath);
-			} elseif (!Cache\Scanner::isPartialFile($internalPath) && $watcher->needsUpdate($internalPath, $data)) {
-				$this->lockFile($relativePath, ILockingProvider::LOCK_SHARED);
-				$watcher->update($internalPath, $data);
-				$storage->getPropagator()->propagateChange($internalPath, time());
-				$data = $cache->get($internalPath);
-				$this->unlockFile($relativePath, ILockingProvider::LOCK_SHARED);
-			}
-		} catch (LockedException $e) {
-			// if the file is locked we just use the old cache info
-		}
-
-		return $data;
-	}
-
-	/**
-	 * get the filesystem info
-	 *
-	 * @param string $path
-	 * @param bool|string $includeMountPoints true to add mountpoint sizes,
-	 * 'ext' to add only ext storage mount point sizes. Defaults to true.
-	 * @return \OC\Files\FileInfo|false False if file does not exist
-	 */
-	public function getFileInfo($path, $includeMountPoints = true) {
-		$this->assertPathLength($path);
-		if (!Filesystem::isValidPath($path)) {
-			return false;
-		}
-		if (Cache\Scanner::isPartialFile($path)) {
-			return $this->getPartFileInfo($path);
-		}
-		$relativePath = $path;
-		$path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
-
-		$mount = Filesystem::getMountManager()->find($path);
-		$storage = $mount->getStorage();
-		$internalPath = $mount->getInternalPath($path);
-		if ($storage) {
-			$data = $this->getCacheEntry($storage, $internalPath, $relativePath);
-
-			if (!$data instanceof ICacheEntry) {
-				return false;
-			}
-
-			if ($mount instanceof MoveableMount && $internalPath === '') {
-				$data['permissions'] |= \OCP\Constants::PERMISSION_DELETE;
-			}
-			$ownerId = $storage->getOwner($internalPath);
-			$owner = null;
-			if ($ownerId !== null && $ownerId !== false) {
-				// ownerId might be null if files are accessed with an access token without file system access
-				$owner = $this->getUserObjectForOwner($ownerId);
-			}
-			$info = new FileInfo($path, $storage, $internalPath, $data, $mount, $owner);
-
-			if (isset($data['fileid'])) {
-				if ($includeMountPoints && $data['mimetype'] === 'httpd/unix-directory') {
-					//add the sizes of other mount points to the folder
-					$extOnly = ($includeMountPoints === 'ext');
-					$this->addSubMounts($info, $extOnly);
-				}
-			}
-
-			return $info;
-		} else {
-			$this->logger->warning('Storage not valid for mountpoint: ' . $mount->getMountPoint(), ['app' => 'core']);
-		}
-
-		return false;
-	}
-
-	/**
-	 * Extend a FileInfo that was previously requested with `$includeMountPoints = false` to include the sub mounts
-	 */
-	public function addSubMounts(FileInfo $info, $extOnly = false): void {
-		$mounts = Filesystem::getMountManager()->findIn($info->getPath());
-		$info->setSubMounts(array_filter($mounts, function (IMountPoint $mount) use ($extOnly) {
-			$subStorage = $mount->getStorage();
-			return !($extOnly && $subStorage instanceof \OCA\Files_Sharing\SharedStorage);
-		}));
-	}
-
-	/**
-	 * get the content of a directory
-	 *
-	 * @param string $directory path under datadirectory
-	 * @param string $mimetype_filter limit returned content to this mimetype or mimepart
-	 * @return FileInfo[]
-	 */
-	public function getDirectoryContent($directory, $mimetype_filter = '', \OCP\Files\FileInfo $directoryInfo = null) {
-		$this->assertPathLength($directory);
-		if (!Filesystem::isValidPath($directory)) {
-			return [];
-		}
-
-		$path = $this->getAbsolutePath($directory);
-		$path = Filesystem::normalizePath($path);
-		$mount = $this->getMount($directory);
-		$storage = $mount->getStorage();
-		$internalPath = $mount->getInternalPath($path);
-		if (!$storage) {
-			return [];
-		}
-
-		$cache = $storage->getCache($internalPath);
-		$user = \OC_User::getUser();
-
-		if (!$directoryInfo) {
-			$data = $this->getCacheEntry($storage, $internalPath, $directory);
-			if (!$data instanceof ICacheEntry || !isset($data['fileid'])) {
-				return [];
-			}
-		} else {
-			$data = $directoryInfo;
-		}
-
-		if (!($data->getPermissions() & Constants::PERMISSION_READ)) {
-			return [];
-		}
-
-		$folderId = $data->getId();
-		$contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
-
-		$sharingDisabled = \OCP\Util::isSharingDisabledForUser();
-
-		$fileNames = array_map(function (ICacheEntry $content) {
-			return $content->getName();
-		}, $contents);
-		/**
-		 * @var \OC\Files\FileInfo[] $fileInfos
-		 */
-		$fileInfos = array_map(function (ICacheEntry $content) use ($path, $storage, $mount, $sharingDisabled) {
-			if ($sharingDisabled) {
-				$content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
-			}
-			$owner = $this->getUserObjectForOwner($storage->getOwner($content['path']));
-			return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
-		}, $contents);
-		$files = array_combine($fileNames, $fileInfos);
-
-		//add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
-		$mounts = Filesystem::getMountManager()->findIn($path);
-		$dirLength = strlen($path);
-		foreach ($mounts as $mount) {
-			$mountPoint = $mount->getMountPoint();
-			$subStorage = $mount->getStorage();
-			if ($subStorage) {
-				$subCache = $subStorage->getCache('');
-
-				$rootEntry = $subCache->get('');
-				if (!$rootEntry) {
-					$subScanner = $subStorage->getScanner();
-					try {
-						$subScanner->scanFile('');
-					} catch (\OCP\Files\StorageNotAvailableException $e) {
-						continue;
-					} catch (\OCP\Files\StorageInvalidException $e) {
-						continue;
-					} catch (\Exception $e) {
-						// sometimes when the storage is not available it can be any exception
-						$this->logger->error('Exception while scanning storage "' . $subStorage->getId() . '"', [
-							'exception' => $e,
-							'app' => 'core',
-						]);
-						continue;
-					}
-					$rootEntry = $subCache->get('');
-				}
-
-				if ($rootEntry && ($rootEntry->getPermissions() & Constants::PERMISSION_READ)) {
-					$relativePath = trim(substr($mountPoint, $dirLength), '/');
-					if ($pos = strpos($relativePath, '/')) {
-						//mountpoint inside subfolder add size to the correct folder
-						$entryName = substr($relativePath, 0, $pos);
-						if (isset($files[$entryName])) {
-							$files[$entryName]->addSubEntry($rootEntry, $mountPoint);
-						}
-					} else { //mountpoint in this folder, add an entry for it
-						$rootEntry['name'] = $relativePath;
-						$rootEntry['type'] = $rootEntry['mimetype'] === 'httpd/unix-directory' ? 'dir' : 'file';
-						$permissions = $rootEntry['permissions'];
-						// do not allow renaming/deleting the mount point if they are not shared files/folders
-						// for shared files/folders we use the permissions given by the owner
-						if ($mount instanceof MoveableMount) {
-							$rootEntry['permissions'] = $permissions | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
-						} else {
-							$rootEntry['permissions'] = $permissions & (\OCP\Constants::PERMISSION_ALL - (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE));
-						}
-
-						$rootEntry['path'] = substr(Filesystem::normalizePath($path . '/' . $rootEntry['name']), strlen($user) + 2); // full path without /$user/
-
-						// if sharing was disabled for the user we remove the share permissions
-						if (\OCP\Util::isSharingDisabledForUser()) {
-							$rootEntry['permissions'] = $rootEntry['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
-						}
-
-						$owner = $this->getUserObjectForOwner($subStorage->getOwner(''));
-						$files[$rootEntry->getName()] = new FileInfo($path . '/' . $rootEntry['name'], $subStorage, '', $rootEntry, $mount, $owner);
-					}
-				}
-			}
-		}
-
-		if ($mimetype_filter) {
-			$files = array_filter($files, function (FileInfo $file) use ($mimetype_filter) {
-				if (strpos($mimetype_filter, '/')) {
-					return $file->getMimetype() === $mimetype_filter;
-				} else {
-					return $file->getMimePart() === $mimetype_filter;
-				}
-			});
-		}
-
-		return array_values($files);
-	}
-
-	/**
-	 * change file metadata
-	 *
-	 * @param string $path
-	 * @param array|\OCP\Files\FileInfo $data
-	 * @return int
-	 *
-	 * returns the fileid of the updated file
-	 */
-	public function putFileInfo($path, $data) {
-		$this->assertPathLength($path);
-		if ($data instanceof FileInfo) {
-			$data = $data->getData();
-		}
-		$path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
-		/**
-		 * @var Storage $storage
-		 * @var string $internalPath
-		 */
-		[$storage, $internalPath] = Filesystem::resolvePath($path);
-		if ($storage) {
-			$cache = $storage->getCache($path);
-
-			if (!$cache->inCache($internalPath)) {
-				$scanner = $storage->getScanner($internalPath);
-				$scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
-			}
-
-			return $cache->put($internalPath, $data);
-		} else {
-			return -1;
-		}
-	}
-
-	/**
-	 * search for files with the name matching $query
-	 *
-	 * @param string $query
-	 * @return FileInfo[]
-	 */
-	public function search($query) {
-		return $this->searchCommon('search', ['%' . $query . '%']);
-	}
-
-	/**
-	 * search for files with the name matching $query
-	 *
-	 * @param string $query
-	 * @return FileInfo[]
-	 */
-	public function searchRaw($query) {
-		return $this->searchCommon('search', [$query]);
-	}
-
-	/**
-	 * search for files by mimetype
-	 *
-	 * @param string $mimetype
-	 * @return FileInfo[]
-	 */
-	public function searchByMime($mimetype) {
-		return $this->searchCommon('searchByMime', [$mimetype]);
-	}
-
-	/**
-	 * search for files by tag
-	 *
-	 * @param string|int $tag name or tag id
-	 * @param string $userId owner of the tags
-	 * @return FileInfo[]
-	 */
-	public function searchByTag($tag, $userId) {
-		return $this->searchCommon('searchByTag', [$tag, $userId]);
-	}
-
-	/**
-	 * @param string $method cache method
-	 * @param array $args
-	 * @return FileInfo[]
-	 */
-	private function searchCommon($method, $args) {
-		$files = [];
-		$rootLength = strlen($this->fakeRoot);
-
-		$mount = $this->getMount('');
-		$mountPoint = $mount->getMountPoint();
-		$storage = $mount->getStorage();
-		$userManager = \OC::$server->getUserManager();
-		if ($storage) {
-			$cache = $storage->getCache('');
-
-			$results = call_user_func_array([$cache, $method], $args);
-			foreach ($results as $result) {
-				if (substr($mountPoint . $result['path'], 0, $rootLength + 1) === $this->fakeRoot . '/') {
-					$internalPath = $result['path'];
-					$path = $mountPoint . $result['path'];
-					$result['path'] = substr($mountPoint . $result['path'], $rootLength);
-					$owner = $userManager->get($storage->getOwner($internalPath));
-					$files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
-				}
-			}
-
-			$mounts = Filesystem::getMountManager()->findIn($this->fakeRoot);
-			foreach ($mounts as $mount) {
-				$mountPoint = $mount->getMountPoint();
-				$storage = $mount->getStorage();
-				if ($storage) {
-					$cache = $storage->getCache('');
-
-					$relativeMountPoint = substr($mountPoint, $rootLength);
-					$results = call_user_func_array([$cache, $method], $args);
-					if ($results) {
-						foreach ($results as $result) {
-							$internalPath = $result['path'];
-							$result['path'] = rtrim($relativeMountPoint . $result['path'], '/');
-							$path = rtrim($mountPoint . $internalPath, '/');
-							$owner = $userManager->get($storage->getOwner($internalPath));
-							$files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
-						}
-					}
-				}
-			}
-		}
-		return $files;
-	}
-
-	/**
-	 * Get the owner for a file or folder
-	 *
-	 * @param string $path
-	 * @return string the user id of the owner
-	 * @throws NotFoundException
-	 */
-	public function getOwner($path) {
-		$info = $this->getFileInfo($path);
-		if (!$info) {
-			throw new NotFoundException($path . ' not found while trying to get owner');
-		}
-
-		if ($info->getOwner() === null) {
-			throw new NotFoundException($path . ' has no owner');
-		}
-
-		return $info->getOwner()->getUID();
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string|false
-	 */
-	public function getETag($path) {
-		[$storage, $internalPath] = $this->resolvePath($path);
-		if ($storage) {
-			return $storage->getETag($internalPath);
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Get the path of a file by id, relative to the view
-	 *
-	 * 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
-	 * @param int|null $storageId
-	 * @return string
-	 * @throws NotFoundException
-	 */
-	public function getPath($id, int $storageId = null) {
-		$id = (int)$id;
-		$manager = Filesystem::getMountManager();
-		$mounts = $manager->findIn($this->fakeRoot);
-		$mounts[] = $manager->find($this->fakeRoot);
-		$mounts = array_filter($mounts);
-		// reverse the array, so we start with the storage this view is in
-		// which is the most likely to contain the file we're looking for
-		$mounts = array_reverse($mounts);
-
-		// put non-shared mounts in front of the shared mount
-		// this prevents unneeded recursion into shares
-		usort($mounts, function (IMountPoint $a, IMountPoint $b) {
-			return $a instanceof SharedMount && (!$b instanceof SharedMount) ? 1 : -1;
-		});
-
-		if (!is_null($storageId)) {
-			$mounts = array_filter($mounts, function (IMountPoint $mount) use ($storageId) {
-				return $mount->getNumericStorageId() === $storageId;
-			});
-		}
-
-		foreach ($mounts as $mount) {
-			/**
-			 * @var \OC\Files\Mount\MountPoint $mount
-			 */
-			if ($mount->getStorage()) {
-				$cache = $mount->getStorage()->getCache();
-				$internalPath = $cache->getPathById($id);
-				if (is_string($internalPath)) {
-					$fullPath = $mount->getMountPoint() . $internalPath;
-					if (!is_null($path = $this->getRelativePath($fullPath))) {
-						return $path;
-					}
-				}
-			}
-		}
-		throw new NotFoundException(sprintf('File with id "%s" has not been found.', $id));
-	}
-
-	/**
-	 * @param string $path
-	 * @throws InvalidPathException
-	 */
-	private function assertPathLength($path): void {
-		$maxLen = min(PHP_MAXPATHLEN, 4000);
-		// Check for the string length - performed using isset() instead of strlen()
-		// because isset() is about 5x-40x faster.
-		if (isset($path[$maxLen])) {
-			$pathLen = strlen($path);
-			throw new InvalidPathException("Path length($pathLen) exceeds max path length($maxLen): $path");
-		}
-	}
-
-	/**
-	 * check if it is allowed to move a mount point to a given target.
-	 * It is not allowed to move a mount point into a different mount point or
-	 * into an already shared folder
-	 */
-	private function targetIsNotShared(IStorage $targetStorage, string $targetInternalPath): bool {
-		// note: cannot use the view because the target is already locked
-		$fileId = $targetStorage->getCache()->getId($targetInternalPath);
-		if ($fileId === -1) {
-			// target might not exist, need to check parent instead
-			$fileId = $targetStorage->getCache()->getId(dirname($targetInternalPath));
-		}
-
-		// check if any of the parents were shared by the current owner (include collections)
-		$shares = Share::getItemShared(
-			'folder',
-			(string)$fileId,
-			\OC\Share\Constants::FORMAT_NONE,
-			null,
-			true
-		);
-
-		if (count($shares) > 0) {
-			$this->logger->debug(
-				'It is not allowed to move one mount point into a shared folder',
-				['app' => 'files']);
-			return false;
-		}
-
-		return true;
-	}
-
-	/**
-	 * Get a fileinfo object for files that are ignored in the cache (part files)
-	 */
-	private function getPartFileInfo(string $path): \OC\Files\FileInfo {
-		$mount = $this->getMount($path);
-		$storage = $mount->getStorage();
-		$internalPath = $mount->getInternalPath($this->getAbsolutePath($path));
-		$owner = \OC::$server->getUserManager()->get($storage->getOwner($internalPath));
-		return new FileInfo(
-			$this->getAbsolutePath($path),
-			$storage,
-			$internalPath,
-			[
-				'fileid' => null,
-				'mimetype' => $storage->getMimeType($internalPath),
-				'name' => basename($path),
-				'etag' => null,
-				'size' => $storage->filesize($internalPath),
-				'mtime' => $storage->filemtime($internalPath),
-				'encrypted' => false,
-				'permissions' => \OCP\Constants::PERMISSION_ALL
-			],
-			$mount,
-			$owner
-		);
-	}
-
-	/**
-	 * @param string $path
-	 * @param string $fileName
-	 * @throws InvalidPathException
-	 */
-	public function verifyPath($path, $fileName): void {
-		try {
-			/** @type \OCP\Files\Storage $storage */
-			[$storage, $internalPath] = $this->resolvePath($path);
-			$storage->verifyPath($internalPath, $fileName);
-		} catch (ReservedWordException $ex) {
-			$l = \OC::$server->getL10N('lib');
-			throw new InvalidPathException($l->t('File name is a reserved word'));
-		} catch (InvalidCharacterInPathException $ex) {
-			$l = \OC::$server->getL10N('lib');
-			throw new InvalidPathException($l->t('File name contains at least one invalid character'));
-		} catch (FileNameTooLongException $ex) {
-			$l = \OC::$server->getL10N('lib');
-			throw new InvalidPathException($l->t('File name is too long'));
-		} catch (InvalidDirectoryException $ex) {
-			$l = \OC::$server->getL10N('lib');
-			throw new InvalidPathException($l->t('Dot files are not allowed'));
-		} catch (EmptyFileNameException $ex) {
-			$l = \OC::$server->getL10N('lib');
-			throw new InvalidPathException($l->t('Empty filename is not allowed'));
-		}
-	}
-
-	/**
-	 * get all parent folders of $path
-	 *
-	 * @param string $path
-	 * @return string[]
-	 */
-	private function getParents($path) {
-		$path = trim($path, '/');
-		if (!$path) {
-			return [];
-		}
-
-		$parts = explode('/', $path);
-
-		// remove the single file
-		array_pop($parts);
-		$result = ['/'];
-		$resultPath = '';
-		foreach ($parts as $part) {
-			if ($part) {
-				$resultPath .= '/' . $part;
-				$result[] = $resultPath;
-			}
-		}
-		return $result;
-	}
-
-	/**
-	 * Returns the mount point for which to lock
-	 *
-	 * @param string $absolutePath absolute path
-	 * @param bool $useParentMount true to return parent mount instead of whatever
-	 * is mounted directly on the given path, false otherwise
-	 * @return IMountPoint mount point for which to apply locks
-	 */
-	private function getMountForLock(string $absolutePath, bool $useParentMount = false): IMountPoint {
-		$mount = Filesystem::getMountManager()->find($absolutePath);
-
-		if ($useParentMount) {
-			// find out if something is mounted directly on the path
-			$internalPath = $mount->getInternalPath($absolutePath);
-			if ($internalPath === '') {
-				// resolve the parent mount instead
-				$mount = Filesystem::getMountManager()->find(dirname($absolutePath));
-			}
-		}
-
-		return $mount;
-	}
-
-	/**
-	 * Lock the given path
-	 *
-	 * @param string $path the path of the file to lock, relative to the view
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
-	 *
-	 * @return bool False if the path is excluded from locking, true otherwise
-	 * @throws LockedException if the path is already locked
-	 */
-	private function lockPath($path, $type, $lockMountPoint = false) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$absolutePath = Filesystem::normalizePath($absolutePath);
-		if (!$this->shouldLockFile($absolutePath)) {
-			return false;
-		}
-
-		$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
-		try {
-			$storage = $mount->getStorage();
-			if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-				$storage->acquireLock(
-					$mount->getInternalPath($absolutePath),
-					$type,
-					$this->lockingProvider
-				);
-			}
-		} catch (LockedException $e) {
-			// rethrow with the a human-readable path
-			throw new LockedException(
-				$this->getPathRelativeToFiles($absolutePath),
-				$e,
-				$e->getExistingLock()
-			);
-		}
-
-		return true;
-	}
-
-	/**
-	 * Change the lock type
-	 *
-	 * @param string $path the path of the file to lock, relative to the view
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
-	 *
-	 * @return bool False if the path is excluded from locking, true otherwise
-	 * @throws LockedException if the path is already locked
-	 */
-	public function changeLock($path, $type, $lockMountPoint = false) {
-		$path = Filesystem::normalizePath($path);
-		$absolutePath = $this->getAbsolutePath($path);
-		$absolutePath = Filesystem::normalizePath($absolutePath);
-		if (!$this->shouldLockFile($absolutePath)) {
-			return false;
-		}
-
-		$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
-		try {
-			$storage = $mount->getStorage();
-			if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-				$storage->changeLock(
-					$mount->getInternalPath($absolutePath),
-					$type,
-					$this->lockingProvider
-				);
-			}
-		} catch (LockedException $e) {
-			try {
-				// rethrow with the a human-readable path
-				throw new LockedException(
-					$this->getPathRelativeToFiles($absolutePath),
-					$e,
-					$e->getExistingLock()
-				);
-			} catch (\InvalidArgumentException $ex) {
-				throw new LockedException(
-					$absolutePath,
-					$ex,
-					$e->getExistingLock()
-				);
-			}
-		}
-
-		return true;
-	}
-
-	/**
-	 * Unlock the given path
-	 *
-	 * @param string $path the path of the file to unlock, relative to the view
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
-	 *
-	 * @return bool False if the path is excluded from locking, true otherwise
-	 * @throws LockedException
-	 */
-	private function unlockPath($path, $type, $lockMountPoint = false) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$absolutePath = Filesystem::normalizePath($absolutePath);
-		if (!$this->shouldLockFile($absolutePath)) {
-			return false;
-		}
-
-		$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
-		$storage = $mount->getStorage();
-		if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
-			$storage->releaseLock(
-				$mount->getInternalPath($absolutePath),
-				$type,
-				$this->lockingProvider
-			);
-		}
-
-		return true;
-	}
-
-	/**
-	 * Lock a path and all its parents up to the root of the view
-	 *
-	 * @param string $path the path of the file to lock relative to the view
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
-	 *
-	 * @return bool False if the path is excluded from locking, true otherwise
-	 * @throws LockedException
-	 */
-	public function lockFile($path, $type, $lockMountPoint = false) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$absolutePath = Filesystem::normalizePath($absolutePath);
-		if (!$this->shouldLockFile($absolutePath)) {
-			return false;
-		}
-
-		$this->lockPath($path, $type, $lockMountPoint);
-
-		$parents = $this->getParents($path);
-		foreach ($parents as $parent) {
-			$this->lockPath($parent, ILockingProvider::LOCK_SHARED);
-		}
-
-		return true;
-	}
-
-	/**
-	 * Unlock a path and all its parents up to the root of the view
-	 *
-	 * @param string $path the path of the file to lock relative to the view
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
-	 *
-	 * @return bool False if the path is excluded from locking, true otherwise
-	 * @throws LockedException
-	 */
-	public function unlockFile($path, $type, $lockMountPoint = false) {
-		$absolutePath = $this->getAbsolutePath($path);
-		$absolutePath = Filesystem::normalizePath($absolutePath);
-		if (!$this->shouldLockFile($absolutePath)) {
-			return false;
-		}
-
-		$this->unlockPath($path, $type, $lockMountPoint);
-
-		$parents = $this->getParents($path);
-		foreach ($parents as $parent) {
-			$this->unlockPath($parent, ILockingProvider::LOCK_SHARED);
-		}
-
-		return true;
-	}
-
-	/**
-	 * Only lock files in data/user/files/
-	 *
-	 * @param string $path Absolute path to the file/folder we try to (un)lock
-	 * @return bool
-	 */
-	protected function shouldLockFile($path) {
-		$path = Filesystem::normalizePath($path);
-
-		$pathSegments = explode('/', $path);
-		if (isset($pathSegments[2])) {
-			// E.g.: /username/files/path-to-file
-			return ($pathSegments[2] === 'files') && (count($pathSegments) > 3);
-		}
-
-		return strpos($path, '/appdata_') !== 0;
-	}
-
-	/**
-	 * Shortens the given absolute path to be relative to
-	 * "$user/files".
-	 *
-	 * @param string $absolutePath absolute path which is under "files"
-	 *
-	 * @return string path relative to "files" with trimmed slashes or null
-	 * if the path was NOT relative to files
-	 *
-	 * @throws \InvalidArgumentException if the given path was not under "files"
-	 * @since 8.1.0
-	 */
-	public function getPathRelativeToFiles($absolutePath) {
-		$path = Filesystem::normalizePath($absolutePath);
-		$parts = explode('/', trim($path, '/'), 3);
-		// "$user", "files", "path/to/dir"
-		if (!isset($parts[1]) || $parts[1] !== 'files') {
-			$this->logger->error(
-				'$absolutePath must be relative to "files", value is "{absolutePath}"',
-				[
-					'absolutePath' => $absolutePath,
-				]
-			);
-			throw new \InvalidArgumentException('$absolutePath must be relative to "files"');
-		}
-		if (isset($parts[2])) {
-			return $parts[2];
-		}
-		return '';
-	}
-
-	/**
-	 * @param string $filename
-	 * @return array
-	 * @throws \OC\User\NoUserException
-	 * @throws NotFoundException
-	 */
-	public function getUidAndFilename($filename) {
-		$info = $this->getFileInfo($filename);
-		if (!$info instanceof \OCP\Files\FileInfo) {
-			throw new NotFoundException($this->getAbsolutePath($filename) . ' not found');
-		}
-		$uid = $info->getOwner()->getUID();
-		if ($uid != \OC_User::getUser()) {
-			Filesystem::initMountPoints($uid);
-			$ownerView = new View('/' . $uid . '/files');
-			try {
-				$filename = $ownerView->getPath($info['fileid']);
-			} catch (NotFoundException $e) {
-				throw new NotFoundException('File with id ' . $info['fileid'] . ' not found for user ' . $uid);
-			}
-		}
-		return [$uid, $filename];
-	}
-
-	/**
-	 * Creates parent non-existing folders
-	 *
-	 * @param string $filePath
-	 * @return bool
-	 */
-	private function createParentDirectories($filePath) {
-		$directoryParts = explode('/', $filePath);
-		$directoryParts = array_filter($directoryParts);
-		foreach ($directoryParts as $key => $part) {
-			$currentPathElements = array_slice($directoryParts, 0, $key);
-			$currentPath = '/' . implode('/', $currentPathElements);
-			if ($this->is_file($currentPath)) {
-				return false;
-			}
-			if (!$this->file_exists($currentPath)) {
-				$this->mkdir($currentPath);
-			}
-		}
-
-		return true;
-	}
+    private string $fakeRoot = '';
+    private ILockingProvider $lockingProvider;
+    private bool $lockingEnabled;
+    private bool $updaterEnabled = true;
+    private UserManager $userManager;
+    private LoggerInterface $logger;
+
+    /**
+     * @throws \Exception If $root contains an invalid path
+     */
+    public function __construct(string $root = '') {
+        if (!Filesystem::isValidPath($root)) {
+            throw new \Exception();
+        }
+
+        $this->fakeRoot = $root;
+        $this->lockingProvider = \OC::$server->getLockingProvider();
+        $this->lockingEnabled = !($this->lockingProvider instanceof \OC\Lock\NoopLockingProvider);
+        $this->userManager = \OC::$server->getUserManager();
+        $this->logger = \OC::$server->get(LoggerInterface::class);
+    }
+
+    /**
+     * @param ?string $path
+     * @psalm-template S as string|null
+     * @psalm-param S $path
+     * @psalm-return (S is string ? string : null)
+     */
+    public function getAbsolutePath($path = '/'): ?string {
+        if ($path === null) {
+            return null;
+        }
+        $this->assertPathLength($path);
+        if ($path === '') {
+            $path = '/';
+        }
+        if ($path[0] !== '/') {
+            $path = '/' . $path;
+        }
+        return $this->fakeRoot . $path;
+    }
+
+    /**
+     * Change the root to a fake root
+     *
+     * @param string $fakeRoot
+     */
+    public function chroot($fakeRoot): void {
+        if (!$fakeRoot == '') {
+            if ($fakeRoot[0] !== '/') {
+                $fakeRoot = '/' . $fakeRoot;
+            }
+        }
+        $this->fakeRoot = $fakeRoot;
+    }
+
+    /**
+     * Get the fake root
+     */
+    public function getRoot(): string {
+        return $this->fakeRoot;
+    }
+
+    /**
+     * get path relative to the root of the view
+     *
+     * @param string $path
+     */
+    public function getRelativePath($path): ?string {
+        $this->assertPathLength($path);
+        if ($this->fakeRoot == '') {
+            return $path;
+        }
+
+        if (rtrim($path, '/') === rtrim($this->fakeRoot, '/')) {
+            return '/';
+        }
+
+        // missing slashes can cause wrong matches!
+        $root = rtrim($this->fakeRoot, '/') . '/';
+
+        if (strpos($path, $root) !== 0) {
+            return null;
+        } else {
+            $path = substr($path, strlen($this->fakeRoot));
+            if (strlen($path) === 0) {
+                return '/';
+            } else {
+                return $path;
+            }
+        }
+    }
+
+    /**
+     * 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 does not take the chroot into account )
+     *
+     * @param string $path
+     */
+    public function getMountPoint($path): string {
+        return Filesystem::getMountPoint($this->getAbsolutePath($path));
+    }
+
+    /**
+     * 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 does not take the chroot into account )
+     *
+     * @param string $path
+     */
+    public function getMount($path): IMountPoint {
+        return Filesystem::getMountManager()->find($this->getAbsolutePath($path));
+    }
+
+    /**
+     * Resolve a path to a storage and internal path
+     *
+     * @param string $path
+     * @return array{?\OCP\Files\Storage\IStorage, string} an array consisting of the storage and the internal path
+     */
+    public function resolvePath($path): array {
+        $a = $this->getAbsolutePath($path);
+        $p = Filesystem::normalizePath($a);
+        return Filesystem::resolvePath($p);
+    }
+
+    /**
+     * 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 $path
+     */
+    public function getLocalFile($path): string|false {
+        $parent = substr($path, 0, strrpos($path, '/') ?: 0);
+        $path = $this->getAbsolutePath($path);
+        [$storage, $internalPath] = Filesystem::resolvePath($path);
+        if (Filesystem::isValidPath($parent) && $storage) {
+            return $storage->getLocalFile($internalPath);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * the following functions operate with arguments and return values identical
+     * to those of their PHP built-in equivalents. Mostly they are merely wrappers
+     * for \OC\Files\Storage\Storage via basicOperation().
+     */
+    public function mkdir($path) {
+        return $this->basicOperation('mkdir', $path, ['create', 'write']);
+    }
+
+    /**
+     * remove mount point
+     *
+     * @param IMountPoint $mount
+     * @param string $path relative to data/
+     */
+    protected function removeMount($mount, $path): bool {
+        if ($mount instanceof MoveableMount) {
+            // cut of /user/files to get the relative path to data/user/files
+            $pathParts = explode('/', $path, 4);
+            $relPath = '/' . $pathParts[3];
+            $this->lockFile($relPath, ILockingProvider::LOCK_SHARED, true);
+            \OC_Hook::emit(
+                Filesystem::CLASSNAME, "umount",
+                [Filesystem::signal_param_path => $relPath]
+            );
+            $this->changeLock($relPath, ILockingProvider::LOCK_EXCLUSIVE, true);
+            $result = $mount->removeMount();
+            $this->changeLock($relPath, ILockingProvider::LOCK_SHARED, true);
+            if ($result) {
+                \OC_Hook::emit(
+                    Filesystem::CLASSNAME, "post_umount",
+                    [Filesystem::signal_param_path => $relPath]
+                );
+            }
+            $this->unlockFile($relPath, ILockingProvider::LOCK_SHARED, true);
+            return $result;
+        } else {
+            // do not allow deleting the storage's root / the mount point
+            // because for some storages it might delete the whole contents
+            // but isn't supposed to work that way
+            return false;
+        }
+    }
+
+    public function disableCacheUpdate(): void {
+        $this->updaterEnabled = false;
+    }
+
+    public function enableCacheUpdate(): void {
+        $this->updaterEnabled = true;
+    }
+
+    protected function writeUpdate(Storage $storage, string $internalPath, ?int $time = null): void {
+        if ($this->updaterEnabled) {
+            if (is_null($time)) {
+                $time = time();
+            }
+            $storage->getUpdater()->update($internalPath, $time);
+        }
+    }
+
+    protected function removeUpdate(Storage $storage, string $internalPath): void {
+        if ($this->updaterEnabled) {
+            $storage->getUpdater()->remove($internalPath);
+        }
+    }
+
+    protected function renameUpdate(Storage $sourceStorage, Storage $targetStorage, string $sourceInternalPath, string $targetInternalPath): void {
+        if ($this->updaterEnabled) {
+            $targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+        }
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function rmdir($path) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $mount = Filesystem::getMountManager()->find($absolutePath);
+        if ($mount->getInternalPath($absolutePath) === '') {
+            return $this->removeMount($mount, $absolutePath);
+        }
+        if ($this->is_dir($path)) {
+            $result = $this->basicOperation('rmdir', $path, ['delete']);
+        } else {
+            $result = false;
+        }
+
+        if (!$result && !$this->file_exists($path)) { //clear ghost files from the cache on delete
+            $storage = $mount->getStorage();
+            $internalPath = $mount->getInternalPath($absolutePath);
+            $storage->getUpdater()->remove($internalPath);
+        }
+        return $result;
+    }
+
+    /**
+     * @param string $path
+     * @return resource|false
+     */
+    public function opendir($path) {
+        return $this->basicOperation('opendir', $path, ['read']);
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function is_dir($path) {
+        if ($path == '/') {
+            return true;
+        }
+        return $this->basicOperation('is_dir', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function is_file($path) {
+        if ($path == '/') {
+            return false;
+        }
+        return $this->basicOperation('is_file', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function stat($path) {
+        return $this->basicOperation('stat', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function filetype($path) {
+        return $this->basicOperation('filetype', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function filesize(string $path) {
+        return $this->basicOperation('filesize', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     * @throws InvalidPathException
+     */
+    public function readfile($path) {
+        $this->assertPathLength($path);
+        if (ob_get_level()) {
+            ob_end_clean();
+        }
+        $handle = $this->fopen($path, 'rb');
+        if ($handle) {
+            $chunkSize = 524288; // 512 kB chunks
+            while (!feof($handle)) {
+                echo fread($handle, $chunkSize);
+                flush();
+            }
+            fclose($handle);
+            return $this->filesize($path);
+        }
+        return false;
+    }
+
+    /**
+     * @param string $path
+     * @param int $from
+     * @param int $to
+     * @return bool|mixed
+     * @throws InvalidPathException
+     * @throws \OCP\Files\UnseekableException
+     */
+    public function readfilePart($path, $from, $to) {
+        $this->assertPathLength($path);
+        if (ob_get_level()) {
+            ob_end_clean();
+        }
+        $handle = $this->fopen($path, 'rb');
+        if ($handle) {
+            $chunkSize = 524288; // 512 kB chunks
+            $startReading = true;
+
+            if ($from !== 0 && $from !== '0' && fseek($handle, $from) !== 0) {
+                // forward file handle via chunked fread because fseek seem to have failed
+
+                $end = $from + 1;
+                while (!feof($handle) && ftell($handle) < $end && ftell($handle) !== $from) {
+                    $len = $from - ftell($handle);
+                    if ($len > $chunkSize) {
+                        $len = $chunkSize;
+                    }
+                    $result = fread($handle, $len);
+
+                    if ($result === false) {
+                        $startReading = false;
+                        break;
+                    }
+                }
+            }
+
+            if ($startReading) {
+                $end = $to + 1;
+                while (!feof($handle) && ftell($handle) < $end) {
+                    $len = $end - ftell($handle);
+                    if ($len > $chunkSize) {
+                        $len = $chunkSize;
+                    }
+                    echo fread($handle, $len);
+                    flush();
+                }
+                return ftell($handle) - $from;
+            }
+
+            throw new \OCP\Files\UnseekableException('fseek error');
+        }
+        return false;
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function isCreatable($path) {
+        return $this->basicOperation('isCreatable', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function isReadable($path) {
+        return $this->basicOperation('isReadable', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function isUpdatable($path) {
+        return $this->basicOperation('isUpdatable', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function isDeletable($path) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $mount = Filesystem::getMountManager()->find($absolutePath);
+        if ($mount->getInternalPath($absolutePath) === '') {
+            return $mount instanceof MoveableMount;
+        }
+        return $this->basicOperation('isDeletable', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function isSharable($path) {
+        return $this->basicOperation('isSharable', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function file_exists($path) {
+        if ($path == '/') {
+            return true;
+        }
+        return $this->basicOperation('file_exists', $path);
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     */
+    public function filemtime($path) {
+        return $this->basicOperation('filemtime', $path);
+    }
+
+    /**
+     * @param string $path
+     * @param int|string $mtime
+     */
+    public function touch($path, $mtime = null): bool {
+        if (!is_null($mtime) && !is_numeric($mtime)) {
+            $mtime = strtotime($mtime);
+        }
+
+        $hooks = ['touch'];
+
+        if (!$this->file_exists($path)) {
+            $hooks[] = 'create';
+            $hooks[] = 'write';
+        }
+        try {
+            $result = $this->basicOperation('touch', $path, $hooks, $mtime);
+        } catch (\Exception $e) {
+            $this->logger->info('Error while setting modified time', ['app' => 'core', 'exception' => $e]);
+            $result = false;
+        }
+        if (!$result) {
+            // If create file fails because of permissions on external storage like SMB folders,
+            // check file exists and return false if not.
+            if (!$this->file_exists($path)) {
+                return false;
+            }
+            if (is_null($mtime)) {
+                $mtime = time();
+            }
+            //if native touch fails, we emulate it by changing the mtime in the cache
+            $this->putFileInfo($path, ['mtime' => floor($mtime)]);
+        }
+        return true;
+    }
+
+    /**
+     * @param string $path
+     * @return string|false
+     * @throws LockedException
+     */
+    public function file_get_contents($path) {
+        return $this->basicOperation('file_get_contents', $path, ['read']);
+    }
+
+    protected function emit_file_hooks_pre(bool $exists, string $path, bool &$run): void {
+        if (!$exists) {
+            \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_create, [
+                Filesystem::signal_param_path => $this->getHookPath($path),
+                Filesystem::signal_param_run => &$run,
+            ]);
+        } else {
+            \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_update, [
+                Filesystem::signal_param_path => $this->getHookPath($path),
+                Filesystem::signal_param_run => &$run,
+            ]);
+        }
+        \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_write, [
+            Filesystem::signal_param_path => $this->getHookPath($path),
+            Filesystem::signal_param_run => &$run,
+        ]);
+    }
+
+    protected function emit_file_hooks_post(bool $exists, string $path): void {
+        if (!$exists) {
+            \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_create, [
+                Filesystem::signal_param_path => $this->getHookPath($path),
+            ]);
+        } else {
+            \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_update, [
+                Filesystem::signal_param_path => $this->getHookPath($path),
+            ]);
+        }
+        \OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_write, [
+            Filesystem::signal_param_path => $this->getHookPath($path),
+        ]);
+    }
+
+    /**
+     * @param string $path
+     * @param string|resource $data
+     * @return bool|mixed
+     * @throws LockedException
+     */
+    public function file_put_contents($path, $data) {
+        if (is_resource($data)) { //not having to deal with streams in file_put_contents makes life easier
+            $absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
+            if (Filesystem::isValidPath($path)
+                && !Filesystem::isFileBlacklisted($path)
+            ) {
+                $path = $this->getRelativePath($absolutePath);
+                if ($path === null) {
+                    throw new InvalidPathException("Path $absolutePath is not in the expected root");
+                }
+
+                $this->lockFile($path, ILockingProvider::LOCK_SHARED);
+
+                $exists = $this->file_exists($path);
+                $run = true;
+                if ($this->shouldEmitHooks($path)) {
+                    $this->emit_file_hooks_pre($exists, $path, $run);
+                }
+                if (!$run) {
+                    $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                    return false;
+                }
+
+                try {
+                    $this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
+                } catch (\Exception $e) {
+                    // Release the shared lock before throwing.
+                    $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                    throw $e;
+                }
+
+                /** @var Storage $storage */
+                [$storage, $internalPath] = $this->resolvePath($path);
+                $target = $storage->fopen($internalPath, 'w');
+                if ($target) {
+                    [, $result] = \OC_Helper::streamCopy($data, $target);
+                    fclose($target);
+                    fclose($data);
+
+                    $this->writeUpdate($storage, $internalPath);
+
+                    $this->changeLock($path, ILockingProvider::LOCK_SHARED);
+
+                    if ($this->shouldEmitHooks($path) && $result !== false) {
+                        $this->emit_file_hooks_post($exists, $path);
+                    }
+                    $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                    return $result;
+                } else {
+                    $this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
+                    return false;
+                }
+            } else {
+                return false;
+            }
+        } else {
+            $hooks = $this->file_exists($path) ? ['update', 'write'] : ['create', 'write'];
+            return $this->basicOperation('file_put_contents', $path, $hooks, $data);
+        }
+    }
+
+    /**
+     * @param string $path
+     * @return bool|mixed
+     */
+    public function unlink($path) {
+        if ($path === '' || $path === '/') {
+            // do not allow deleting the root
+            return false;
+        }
+        $postFix = (substr($path, -1) === '/') ? '/' : '';
+        $absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
+        $mount = Filesystem::getMountManager()->find($absolutePath . $postFix);
+        if ($mount->getInternalPath($absolutePath) === '') {
+            return $this->removeMount($mount, $absolutePath);
+        }
+        if ($this->is_dir($path)) {
+            $result = $this->basicOperation('rmdir', $path, ['delete']);
+        } else {
+            $result = $this->basicOperation('unlink', $path, ['delete']);
+        }
+        if (!$result && !$this->file_exists($path)) { //clear ghost files from the cache on delete
+            $storage = $mount->getStorage();
+            $internalPath = $mount->getInternalPath($absolutePath);
+            $storage->getUpdater()->remove($internalPath);
+            return true;
+        } else {
+            return $result;
+        }
+    }
+
+    /**
+     * @param string $directory
+     * @return bool|mixed
+     */
+    public function deleteAll($directory) {
+        return $this->rmdir($directory);
+    }
+
+    /**
+     * Rename/move a file or folder from the source path to target path.
+     *
+     * @param string $source source path
+     * @param string $target target path
+     *
+     * @return bool|mixed
+     * @throws LockedException
+     */
+    public function rename($source, $target) {
+        $absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($source));
+        $absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($target));
+        $result = false;
+        if (
+            Filesystem::isValidPath($target)
+            && Filesystem::isValidPath($source)
+            && !Filesystem::isFileBlacklisted($target)
+        ) {
+            $source = $this->getRelativePath($absolutePath1);
+            $target = $this->getRelativePath($absolutePath2);
+            $exists = $this->file_exists($target);
+
+            if ($source == null || $target == null) {
+                return false;
+            }
+
+            $this->lockFile($source, ILockingProvider::LOCK_SHARED, true);
+            try {
+                $this->lockFile($target, ILockingProvider::LOCK_SHARED, true);
+
+                $run = true;
+                if ($this->shouldEmitHooks($source) && (Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target))) {
+                    // if it was a rename from a part file to a regular file it was a write and not a rename operation
+                    $this->emit_file_hooks_pre($exists, $target, $run);
+                } elseif ($this->shouldEmitHooks($source)) {
+                    \OC_Hook::emit(
+                        Filesystem::CLASSNAME, Filesystem::signal_rename,
+                        [
+                            Filesystem::signal_param_oldpath => $this->getHookPath($source),
+                            Filesystem::signal_param_newpath => $this->getHookPath($target),
+                            Filesystem::signal_param_run => &$run
+                        ]
+                    );
+                }
+                if ($run) {
+                    $this->verifyPath(dirname($target), basename($target));
+
+                    $manager = Filesystem::getMountManager();
+                    $mount1 = $this->getMount($source);
+                    $mount2 = $this->getMount($target);
+                    $storage1 = $mount1->getStorage();
+                    $storage2 = $mount2->getStorage();
+                    $internalPath1 = $mount1->getInternalPath($absolutePath1);
+                    $internalPath2 = $mount2->getInternalPath($absolutePath2);
+
+                    $this->changeLock($source, ILockingProvider::LOCK_EXCLUSIVE, true);
+                    try {
+                        $this->changeLock($target, ILockingProvider::LOCK_EXCLUSIVE, true);
+
+                        if ($internalPath1 === '') {
+                            if ($mount1 instanceof MoveableMount) {
+                                $sourceParentMount = $this->getMount(dirname($source));
+                                if ($sourceParentMount === $mount2 && $this->targetIsNotShared($storage2, $internalPath2)) {
+                                    /**
+                                     * @var \OC\Files\Mount\MountPoint | \OC\Files\Mount\MoveableMount $mount1
+                                     */
+                                    $sourceMountPoint = $mount1->getMountPoint();
+                                    $result = $mount1->moveMount($absolutePath2);
+                                    $manager->moveMount($sourceMountPoint, $mount1->getMountPoint());
+                                } else {
+                                    $result = false;
+                                }
+                            } else {
+                                $result = false;
+                            }
+                        // moving a file/folder within the same mount point
+                        } elseif ($storage1 === $storage2) {
+                            if ($storage1) {
+                                $result = $storage1->rename($internalPath1, $internalPath2);
+                            } else {
+                                $result = false;
+                            }
+                        // moving a file/folder between storages (from $storage1 to $storage2)
+                        } else {
+                            $result = $storage2->moveFromStorage($storage1, $internalPath1, $internalPath2);
+                        }
+
+                        if ((Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target)) && $result !== false) {
+                            // if it was a rename from a part file to a regular file it was a write and not a rename operation
+                            $this->writeUpdate($storage2, $internalPath2);
+                        } elseif ($result) {
+                            if ($internalPath1 !== '') { // don't do a cache update for moved mounts
+                                $this->renameUpdate($storage1, $storage2, $internalPath1, $internalPath2);
+                            }
+                        }
+                    } catch (\Exception $e) {
+                        throw $e;
+                    } finally {
+                        $this->changeLock($source, ILockingProvider::LOCK_SHARED, true);
+                        $this->changeLock($target, ILockingProvider::LOCK_SHARED, true);
+                    }
+
+                    if ((Cache\Scanner::isPartialFile($source) && !Cache\Scanner::isPartialFile($target)) && $result !== false) {
+                        if ($this->shouldEmitHooks()) {
+                            $this->emit_file_hooks_post($exists, $target);
+                        }
+                    } elseif ($result) {
+                        if ($this->shouldEmitHooks($source) && $this->shouldEmitHooks($target)) {
+                            \OC_Hook::emit(
+                                Filesystem::CLASSNAME,
+                                Filesystem::signal_post_rename,
+                                [
+                                    Filesystem::signal_param_oldpath => $this->getHookPath($source),
+                                    Filesystem::signal_param_newpath => $this->getHookPath($target)
+                                ]
+                            );
+                        }
+                    }
+                }
+            } catch (\Exception $e) {
+                throw $e;
+            } finally {
+                $this->unlockFile($source, ILockingProvider::LOCK_SHARED, true);
+                $this->unlockFile($target, ILockingProvider::LOCK_SHARED, true);
+            }
+        }
+        return $result;
+    }
+
+    /**
+     * Copy a file/folder from the source path to target path
+     *
+     * @param string $source source path
+     * @param string $target target path
+     * @param bool $preserveMtime whether to preserve mtime on the copy
+     *
+     * @return bool|mixed
+     */
+    public function copy($source, $target, $preserveMtime = false) {
+        $absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($source));
+        $absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($target));
+        $result = false;
+        if (
+            Filesystem::isValidPath($target)
+            && Filesystem::isValidPath($source)
+            && !Filesystem::isFileBlacklisted($target)
+        ) {
+            $source = $this->getRelativePath($absolutePath1);
+            $target = $this->getRelativePath($absolutePath2);
+
+            if ($source == null || $target == null) {
+                return false;
+            }
+            $run = true;
+
+            $this->lockFile($target, ILockingProvider::LOCK_SHARED);
+            $this->lockFile($source, ILockingProvider::LOCK_SHARED);
+            $lockTypePath1 = ILockingProvider::LOCK_SHARED;
+            $lockTypePath2 = ILockingProvider::LOCK_SHARED;
+
+            try {
+                $exists = $this->file_exists($target);
+                if ($this->shouldEmitHooks()) {
+                    \OC_Hook::emit(
+                        Filesystem::CLASSNAME,
+                        Filesystem::signal_copy,
+                        [
+                            Filesystem::signal_param_oldpath => $this->getHookPath($source),
+                            Filesystem::signal_param_newpath => $this->getHookPath($target),
+                            Filesystem::signal_param_run => &$run
+                        ]
+                    );
+                    $this->emit_file_hooks_pre($exists, $target, $run);
+                }
+                if ($run) {
+                    $mount1 = $this->getMount($source);
+                    $mount2 = $this->getMount($target);
+                    $storage1 = $mount1->getStorage();
+                    $internalPath1 = $mount1->getInternalPath($absolutePath1);
+                    $storage2 = $mount2->getStorage();
+                    $internalPath2 = $mount2->getInternalPath($absolutePath2);
+
+                    $this->changeLock($target, ILockingProvider::LOCK_EXCLUSIVE);
+                    $lockTypePath2 = ILockingProvider::LOCK_EXCLUSIVE;
+
+                    if ($mount1->getMountPoint() == $mount2->getMountPoint()) {
+                        if ($storage1) {
+                            $result = $storage1->copy($internalPath1, $internalPath2);
+                        } else {
+                            $result = false;
+                        }
+                    } else {
+                        $result = $storage2->copyFromStorage($storage1, $internalPath1, $internalPath2);
+                    }
+
+                    $this->writeUpdate($storage2, $internalPath2);
+
+                    $this->changeLock($target, ILockingProvider::LOCK_SHARED);
+                    $lockTypePath2 = ILockingProvider::LOCK_SHARED;
+
+                    if ($this->shouldEmitHooks() && $result !== false) {
+                        \OC_Hook::emit(
+                            Filesystem::CLASSNAME,
+                            Filesystem::signal_post_copy,
+                            [
+                                Filesystem::signal_param_oldpath => $this->getHookPath($source),
+                                Filesystem::signal_param_newpath => $this->getHookPath($target)
+                            ]
+                        );
+                        $this->emit_file_hooks_post($exists, $target);
+                    }
+                }
+            } catch (\Exception $e) {
+                $this->unlockFile($target, $lockTypePath2);
+                $this->unlockFile($source, $lockTypePath1);
+                throw $e;
+            }
+
+            $this->unlockFile($target, $lockTypePath2);
+            $this->unlockFile($source, $lockTypePath1);
+        }
+        return $result;
+    }
+
+    /**
+     * @param string $path
+     * @param string $mode 'r' or 'w'
+     * @return resource|false
+     * @throws LockedException
+     */
+    public function fopen($path, $mode) {
+        $mode = str_replace('b', '', $mode); // the binary flag is a windows only feature which we do not support
+        $hooks = [];
+        switch ($mode) {
+            case 'r':
+                $hooks[] = 'read';
+                break;
+            case 'r+':
+            case 'w+':
+            case 'x+':
+            case 'a+':
+                $hooks[] = 'read';
+                $hooks[] = 'write';
+                break;
+            case 'w':
+            case 'x':
+            case 'a':
+                $hooks[] = 'write';
+                break;
+            default:
+                $this->logger->error('invalid mode (' . $mode . ') for ' . $path, ['app' => 'core']);
+        }
+
+        if ($mode !== 'r' && $mode !== 'w') {
+            $this->logger->info('Trying to open a file with a mode other than "r" or "w" can cause severe performance issues with some backends', ['app' => 'core']);
+        }
+
+        $handle = $this->basicOperation('fopen', $path, $hooks, $mode);
+        if (!is_resource($handle) && $mode === 'r') {
+            // trying to read a file that isn't on disk, check if the cache is out of sync and rescan if needed
+            $mount = $this->getMount($path);
+            $internalPath = $mount->getInternalPath($this->getAbsolutePath($path));
+            $storage = $mount->getStorage();
+            if ($storage->getCache()->inCache($internalPath) && !$storage->file_exists($path)) {
+                $this->writeUpdate($storage, $internalPath);
+            }
+        }
+        return $handle;
+    }
+
+    /**
+     * @param string $path
+     * @throws InvalidPathException
+     */
+    public function toTmpFile($path): string|false {
+        $this->assertPathLength($path);
+        if (Filesystem::isValidPath($path)) {
+            $source = $this->fopen($path, 'r');
+            if ($source) {
+                $extension = pathinfo($path, PATHINFO_EXTENSION);
+                $tmpFile = \OC::$server->getTempManager()->getTemporaryFile($extension);
+                file_put_contents($tmpFile, $source);
+                return $tmpFile;
+            } else {
+                return false;
+            }
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * @param string $tmpFile
+     * @param string $path
+     * @return bool|mixed
+     * @throws InvalidPathException
+     */
+    public function fromTmpFile($tmpFile, $path) {
+        $this->assertPathLength($path);
+        if (Filesystem::isValidPath($path)) {
+            // Get directory that the file is going into
+            $filePath = dirname($path);
+
+            // Create the directories if any
+            if (!$this->file_exists($filePath)) {
+                $result = $this->createParentDirectories($filePath);
+                if ($result === false) {
+                    return false;
+                }
+            }
+
+            $source = fopen($tmpFile, 'r');
+            if ($source) {
+                $result = $this->file_put_contents($path, $source);
+                /**
+                 * $this->file_put_contents() might have already closed
+                 * the resource, so we check it, before trying to close it
+                 * to avoid messages in the error log.
+                 * @psalm-suppress RedundantCondition false-positive
+                 */
+                if (is_resource($source)) {
+                    fclose($source);
+                }
+                unlink($tmpFile);
+                return $result;
+            } else {
+                return false;
+            }
+        } else {
+            return false;
+        }
+    }
+
+
+    /**
+     * @param string $path
+     * @return mixed
+     * @throws InvalidPathException
+     */
+    public function getMimeType($path) {
+        $this->assertPathLength($path);
+        return $this->basicOperation('getMimeType', $path);
+    }
+
+    /**
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     */
+    public function hash($type, $path, $raw = false): string|bool {
+        $postFix = (substr($path, -1) === '/') ? '/' : '';
+        $absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
+        if (Filesystem::isValidPath($path)) {
+            $path = $this->getRelativePath($absolutePath);
+            if ($path == null) {
+                return false;
+            }
+            if ($this->shouldEmitHooks($path)) {
+                \OC_Hook::emit(
+                    Filesystem::CLASSNAME,
+                    Filesystem::signal_read,
+                    [Filesystem::signal_param_path => $this->getHookPath($path)]
+                );
+            }
+            /** @var Storage|null $storage */
+            [$storage, $internalPath] = Filesystem::resolvePath($absolutePath . $postFix);
+            if ($storage) {
+                return $storage->hash($type, $internalPath, $raw);
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @param string $path
+     * @return mixed
+     * @throws InvalidPathException
+     */
+    public function free_space($path = '/') {
+        $this->assertPathLength($path);
+        $result = $this->basicOperation('free_space', $path);
+        if ($result === null) {
+            throw new InvalidPathException();
+        }
+        return $result;
+    }
+
+    /**
+     * abstraction layer for basic filesystem functions: wrapper for \OC\Files\Storage\Storage
+     *
+     * @param mixed $extraParam (optional)
+     * @return mixed
+     * @throws LockedException
+     *
+     * This method takes requests for basic filesystem functions (e.g. reading & writing
+     * files), processes hooks and proxies, sanitises paths, and finally passes them on to
+     * \OC\Files\Storage\Storage for delegation to a storage backend for execution
+     */
+    private function basicOperation(string $operation, string $path, array $hooks = [], $extraParam = null) {
+        $postFix = (substr($path, -1) === '/') ? '/' : '';
+        $absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
+        if (Filesystem::isValidPath($path)
+            && !Filesystem::isFileBlacklisted($path)
+        ) {
+            $path = $this->getRelativePath($absolutePath);
+            if ($path == null) {
+                return false;
+            }
+
+            if (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks)) {
+                // always a shared lock during pre-hooks so the hook can read the file
+                $this->lockFile($path, ILockingProvider::LOCK_SHARED);
+            }
+
+            $run = $this->runHooks($hooks, $path);
+            [$storage, $internalPath] = Filesystem::resolvePath($absolutePath . $postFix);
+            if ($run && $storage) {
+                /** @var Storage $storage */
+                if (in_array('write', $hooks) || in_array('delete', $hooks)) {
+                    try {
+                        $this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
+                    } catch (LockedException $e) {
+                        // release the shared lock we acquired before quitting
+                        $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                        throw $e;
+                    }
+                }
+                try {
+                    if (!is_null($extraParam)) {
+                        $result = $storage->$operation($internalPath, $extraParam);
+                    } else {
+                        $result = $storage->$operation($internalPath);
+                    }
+                } catch (\Exception $e) {
+                    if (in_array('write', $hooks) || in_array('delete', $hooks)) {
+                        $this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
+                    } elseif (in_array('read', $hooks)) {
+                        $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                    }
+                    throw $e;
+                }
+
+                if ($result !== false && in_array('delete', $hooks)) {
+                    $this->removeUpdate($storage, $internalPath);
+                }
+                if ($result !== false && in_array('write', $hooks, true) && $operation !== 'fopen' && $operation !== 'touch') {
+                    $this->writeUpdate($storage, $internalPath);
+                }
+                if ($result !== false && in_array('touch', $hooks)) {
+                    $this->writeUpdate($storage, $internalPath, $extraParam);
+                }
+
+                if ((in_array('write', $hooks) || in_array('delete', $hooks)) && ($operation !== 'fopen' || $result === false)) {
+                    $this->changeLock($path, ILockingProvider::LOCK_SHARED);
+                }
+
+                $unlockLater = false;
+                if ($this->lockingEnabled && $operation === 'fopen' && is_resource($result)) {
+                    $unlockLater = true;
+                    // make sure our unlocking callback will still be called if connection is aborted
+                    ignore_user_abort(true);
+                    $result = CallbackWrapper::wrap($result, null, null, function () use ($hooks, $path) {
+                        if (in_array('write', $hooks)) {
+                            $this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
+                        } elseif (in_array('read', $hooks)) {
+                            $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                        }
+                    });
+                }
+
+                if ($this->shouldEmitHooks($path) && $result !== false) {
+                    if ($operation != 'fopen') { //no post hooks for fopen, the file stream is still open
+                        $this->runHooks($hooks, $path, true);
+                    }
+                }
+
+                if (!$unlockLater
+                    && (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks))
+                ) {
+                    $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+                }
+                return $result;
+            } else {
+                $this->unlockFile($path, ILockingProvider::LOCK_SHARED);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * get the path relative to the default root for hook usage
+     *
+     * @param string $path
+     * @return ?string
+     */
+    private function getHookPath($path): ?string {
+        $view = Filesystem::getView();
+        if (!$view) {
+            return $path;
+        }
+        return $view->getRelativePath($this->getAbsolutePath($path));
+    }
+
+    private function shouldEmitHooks(string $path = ''): bool {
+        if ($path && Cache\Scanner::isPartialFile($path)) {
+            return false;
+        }
+        if (!Filesystem::$loaded) {
+            return false;
+        }
+        $defaultRoot = Filesystem::getRoot();
+        if ($defaultRoot === null) {
+            return false;
+        }
+        if ($this->fakeRoot === $defaultRoot) {
+            return true;
+        }
+        $fullPath = $this->getAbsolutePath($path);
+
+        if ($fullPath === $defaultRoot) {
+            return true;
+        }
+
+        return (strlen($fullPath) > strlen($defaultRoot)) && (substr($fullPath, 0, strlen($defaultRoot) + 1) === $defaultRoot . '/');
+    }
+
+    /**
+     * @param string[] $hooks
+     * @param string $path
+     * @param bool $post
+     * @return bool
+     */
+    private function runHooks($hooks, $path, $post = false) {
+        $relativePath = $path;
+        $path = $this->getHookPath($path);
+        $prefix = $post ? 'post_' : '';
+        $run = true;
+        if ($this->shouldEmitHooks($relativePath)) {
+            foreach ($hooks as $hook) {
+                if ($hook != 'read') {
+                    \OC_Hook::emit(
+                        Filesystem::CLASSNAME,
+                        $prefix . $hook,
+                        [
+                            Filesystem::signal_param_run => &$run,
+                            Filesystem::signal_param_path => $path
+                        ]
+                    );
+                } elseif (!$post) {
+                    \OC_Hook::emit(
+                        Filesystem::CLASSNAME,
+                        $prefix . $hook,
+                        [
+                            Filesystem::signal_param_path => $path
+                        ]
+                    );
+                }
+            }
+        }
+        return $run;
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     */
+    public function hasUpdated($path, $time) {
+        return $this->basicOperation('hasUpdated', $path, [], $time);
+    }
+
+    /**
+     * @param string $ownerId
+     * @return IUser
+     */
+    private function getUserObjectForOwner(string $ownerId) {
+        return new LazyUser($ownerId, $this->userManager);
+    }
+
+    /**
+     * Get file info from cache
+     *
+     * If the file is not in cached it will be scanned
+     * If the file has changed on storage the cache will be updated
+     *
+     * @param Storage $storage
+     * @param string $internalPath
+     * @param string $relativePath
+     * @return ICacheEntry|bool
+     */
+    private function getCacheEntry($storage, $internalPath, $relativePath) {
+        $cache = $storage->getCache($internalPath);
+        $data = $cache->get($internalPath);
+        $watcher = $storage->getWatcher($internalPath);
+
+        try {
+            // if the file is not in the cache or needs to be updated, trigger the scanner and reload the data
+            if (!$data || (isset($data['size']) && $data['size'] === -1)) {
+                if (!$storage->file_exists($internalPath)) {
+                    return false;
+                }
+                // don't need to get a lock here since the scanner does it's own locking
+                $scanner = $storage->getScanner($internalPath);
+                $scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
+                $data = $cache->get($internalPath);
+            } elseif (!Cache\Scanner::isPartialFile($internalPath) && $watcher->needsUpdate($internalPath, $data)) {
+                $this->lockFile($relativePath, ILockingProvider::LOCK_SHARED);
+                $watcher->update($internalPath, $data);
+                $storage->getPropagator()->propagateChange($internalPath, time());
+                $data = $cache->get($internalPath);
+                $this->unlockFile($relativePath, ILockingProvider::LOCK_SHARED);
+            }
+        } catch (LockedException $e) {
+            // if the file is locked we just use the old cache info
+        }
+
+        return $data;
+    }
+
+    /**
+     * get the filesystem info
+     *
+     * @param string $path
+     * @param bool|string $includeMountPoints true to add mountpoint sizes,
+     * 'ext' to add only ext storage mount point sizes. Defaults to true.
+     * @return \OC\Files\FileInfo|false False if file does not exist
+     */
+    public function getFileInfo($path, $includeMountPoints = true) {
+        $this->assertPathLength($path);
+        if (!Filesystem::isValidPath($path)) {
+            return false;
+        }
+        if (Cache\Scanner::isPartialFile($path)) {
+            return $this->getPartFileInfo($path);
+        }
+        $relativePath = $path;
+        $path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
+
+        $mount = Filesystem::getMountManager()->find($path);
+        $storage = $mount->getStorage();
+        $internalPath = $mount->getInternalPath($path);
+        if ($storage) {
+            $data = $this->getCacheEntry($storage, $internalPath, $relativePath);
+
+            if (!$data instanceof ICacheEntry) {
+                return false;
+            }
+
+            if ($mount instanceof MoveableMount && $internalPath === '') {
+                $data['permissions'] |= \OCP\Constants::PERMISSION_DELETE;
+            }
+            $ownerId = $storage->getOwner($internalPath);
+            $owner = null;
+            if ($ownerId !== null && $ownerId !== false) {
+                // ownerId might be null if files are accessed with an access token without file system access
+                $owner = $this->getUserObjectForOwner($ownerId);
+            }
+            $info = new FileInfo($path, $storage, $internalPath, $data, $mount, $owner);
+
+            if (isset($data['fileid'])) {
+                if ($includeMountPoints && $data['mimetype'] === 'httpd/unix-directory') {
+                    //add the sizes of other mount points to the folder
+                    $extOnly = ($includeMountPoints === 'ext');
+                    $this->addSubMounts($info, $extOnly);
+                }
+            }
+
+            return $info;
+        } else {
+            $this->logger->warning('Storage not valid for mountpoint: ' . $mount->getMountPoint(), ['app' => 'core']);
+        }
+
+        return false;
+    }
+
+    /**
+     * Extend a FileInfo that was previously requested with `$includeMountPoints = false` to include the sub mounts
+     */
+    public function addSubMounts(FileInfo $info, $extOnly = false): void {
+        $mounts = Filesystem::getMountManager()->findIn($info->getPath());
+        $info->setSubMounts(array_filter($mounts, function (IMountPoint $mount) use ($extOnly) {
+            $subStorage = $mount->getStorage();
+            return !($extOnly && $subStorage instanceof \OCA\Files_Sharing\SharedStorage);
+        }));
+    }
+
+    /**
+     * get the content of a directory
+     *
+     * @param string $directory path under datadirectory
+     * @param string $mimetype_filter limit returned content to this mimetype or mimepart
+     * @return FileInfo[]
+     */
+    public function getDirectoryContent($directory, $mimetype_filter = '', \OCP\Files\FileInfo $directoryInfo = null) {
+        $this->assertPathLength($directory);
+        if (!Filesystem::isValidPath($directory)) {
+            return [];
+        }
+
+        $path = $this->getAbsolutePath($directory);
+        $path = Filesystem::normalizePath($path);
+        $mount = $this->getMount($directory);
+        $storage = $mount->getStorage();
+        $internalPath = $mount->getInternalPath($path);
+        if (!$storage) {
+            return [];
+        }
+
+        $cache = $storage->getCache($internalPath);
+        $user = \OC_User::getUser();
+
+        if (!$directoryInfo) {
+            $data = $this->getCacheEntry($storage, $internalPath, $directory);
+            if (!$data instanceof ICacheEntry || !isset($data['fileid'])) {
+                return [];
+            }
+        } else {
+            $data = $directoryInfo;
+        }
+
+        if (!($data->getPermissions() & Constants::PERMISSION_READ)) {
+            return [];
+        }
+
+        $folderId = $data->getId();
+        $contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
+
+        $sharingDisabled = \OCP\Util::isSharingDisabledForUser();
+
+        $fileNames = array_map(function (ICacheEntry $content) {
+            return $content->getName();
+        }, $contents);
+        /**
+         * @var \OC\Files\FileInfo[] $fileInfos
+         */
+        $fileInfos = array_map(function (ICacheEntry $content) use ($path, $storage, $mount, $sharingDisabled) {
+            if ($sharingDisabled) {
+                $content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
+            }
+            $owner = $this->getUserObjectForOwner($storage->getOwner($content['path']));
+            return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
+        }, $contents);
+        $files = array_combine($fileNames, $fileInfos);
+
+        //add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
+        $mounts = Filesystem::getMountManager()->findIn($path);
+        $dirLength = strlen($path);
+        foreach ($mounts as $mount) {
+            $mountPoint = $mount->getMountPoint();
+            $subStorage = $mount->getStorage();
+            if ($subStorage) {
+                $subCache = $subStorage->getCache('');
+
+                $rootEntry = $subCache->get('');
+                if (!$rootEntry) {
+                    $subScanner = $subStorage->getScanner();
+                    try {
+                        $subScanner->scanFile('');
+                    } catch (\OCP\Files\StorageNotAvailableException $e) {
+                        continue;
+                    } catch (\OCP\Files\StorageInvalidException $e) {
+                        continue;
+                    } catch (\Exception $e) {
+                        // sometimes when the storage is not available it can be any exception
+                        $this->logger->error('Exception while scanning storage "' . $subStorage->getId() . '"', [
+                            'exception' => $e,
+                            'app' => 'core',
+                        ]);
+                        continue;
+                    }
+                    $rootEntry = $subCache->get('');
+                }
+
+                if ($rootEntry && ($rootEntry->getPermissions() & Constants::PERMISSION_READ)) {
+                    $relativePath = trim(substr($mountPoint, $dirLength), '/');
+                    if ($pos = strpos($relativePath, '/')) {
+                        //mountpoint inside subfolder add size to the correct folder
+                        $entryName = substr($relativePath, 0, $pos);
+                        if (isset($files[$entryName])) {
+                            $files[$entryName]->addSubEntry($rootEntry, $mountPoint);
+                        }
+                    } else { //mountpoint in this folder, add an entry for it
+                        $rootEntry['name'] = $relativePath;
+                        $rootEntry['type'] = $rootEntry['mimetype'] === 'httpd/unix-directory' ? 'dir' : 'file';
+                        $permissions = $rootEntry['permissions'];
+                        // do not allow renaming/deleting the mount point if they are not shared files/folders
+                        // for shared files/folders we use the permissions given by the owner
+                        if ($mount instanceof MoveableMount) {
+                            $rootEntry['permissions'] = $permissions | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
+                        } else {
+                            $rootEntry['permissions'] = $permissions & (\OCP\Constants::PERMISSION_ALL - (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE));
+                        }
+
+                        $rootEntry['path'] = substr(Filesystem::normalizePath($path . '/' . $rootEntry['name']), strlen($user) + 2); // full path without /$user/
+
+                        // if sharing was disabled for the user we remove the share permissions
+                        if (\OCP\Util::isSharingDisabledForUser()) {
+                            $rootEntry['permissions'] = $rootEntry['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
+                        }
+
+                        $owner = $this->getUserObjectForOwner($subStorage->getOwner(''));
+                        $files[$rootEntry->getName()] = new FileInfo($path . '/' . $rootEntry['name'], $subStorage, '', $rootEntry, $mount, $owner);
+                    }
+                }
+            }
+        }
+
+        if ($mimetype_filter) {
+            $files = array_filter($files, function (FileInfo $file) use ($mimetype_filter) {
+                if (strpos($mimetype_filter, '/')) {
+                    return $file->getMimetype() === $mimetype_filter;
+                } else {
+                    return $file->getMimePart() === $mimetype_filter;
+                }
+            });
+        }
+
+        return array_values($files);
+    }
+
+    /**
+     * change file metadata
+     *
+     * @param string $path
+     * @param array|\OCP\Files\FileInfo $data
+     * @return int
+     *
+     * returns the fileid of the updated file
+     */
+    public function putFileInfo($path, $data) {
+        $this->assertPathLength($path);
+        if ($data instanceof FileInfo) {
+            $data = $data->getData();
+        }
+        $path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
+        /**
+         * @var Storage $storage
+         * @var string $internalPath
+         */
+        [$storage, $internalPath] = Filesystem::resolvePath($path);
+        if ($storage) {
+            $cache = $storage->getCache($path);
+
+            if (!$cache->inCache($internalPath)) {
+                $scanner = $storage->getScanner($internalPath);
+                $scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
+            }
+
+            return $cache->put($internalPath, $data);
+        } else {
+            return -1;
+        }
+    }
+
+    /**
+     * search for files with the name matching $query
+     *
+     * @param string $query
+     * @return FileInfo[]
+     */
+    public function search($query) {
+        return $this->searchCommon('search', ['%' . $query . '%']);
+    }
+
+    /**
+     * search for files with the name matching $query
+     *
+     * @param string $query
+     * @return FileInfo[]
+     */
+    public function searchRaw($query) {
+        return $this->searchCommon('search', [$query]);
+    }
+
+    /**
+     * search for files by mimetype
+     *
+     * @param string $mimetype
+     * @return FileInfo[]
+     */
+    public function searchByMime($mimetype) {
+        return $this->searchCommon('searchByMime', [$mimetype]);
+    }
+
+    /**
+     * search for files by tag
+     *
+     * @param string|int $tag name or tag id
+     * @param string $userId owner of the tags
+     * @return FileInfo[]
+     */
+    public function searchByTag($tag, $userId) {
+        return $this->searchCommon('searchByTag', [$tag, $userId]);
+    }
+
+    /**
+     * @param string $method cache method
+     * @param array $args
+     * @return FileInfo[]
+     */
+    private function searchCommon($method, $args) {
+        $files = [];
+        $rootLength = strlen($this->fakeRoot);
+
+        $mount = $this->getMount('');
+        $mountPoint = $mount->getMountPoint();
+        $storage = $mount->getStorage();
+        $userManager = \OC::$server->getUserManager();
+        if ($storage) {
+            $cache = $storage->getCache('');
+
+            $results = call_user_func_array([$cache, $method], $args);
+            foreach ($results as $result) {
+                if (substr($mountPoint . $result['path'], 0, $rootLength + 1) === $this->fakeRoot . '/') {
+                    $internalPath = $result['path'];
+                    $path = $mountPoint . $result['path'];
+                    $result['path'] = substr($mountPoint . $result['path'], $rootLength);
+                    $owner = $userManager->get($storage->getOwner($internalPath));
+                    $files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
+                }
+            }
+
+            $mounts = Filesystem::getMountManager()->findIn($this->fakeRoot);
+            foreach ($mounts as $mount) {
+                $mountPoint = $mount->getMountPoint();
+                $storage = $mount->getStorage();
+                if ($storage) {
+                    $cache = $storage->getCache('');
+
+                    $relativeMountPoint = substr($mountPoint, $rootLength);
+                    $results = call_user_func_array([$cache, $method], $args);
+                    if ($results) {
+                        foreach ($results as $result) {
+                            $internalPath = $result['path'];
+                            $result['path'] = rtrim($relativeMountPoint . $result['path'], '/');
+                            $path = rtrim($mountPoint . $internalPath, '/');
+                            $owner = $userManager->get($storage->getOwner($internalPath));
+                            $files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
+                        }
+                    }
+                }
+            }
+        }
+        return $files;
+    }
+
+    /**
+     * Get the owner for a file or folder
+     *
+     * @param string $path
+     * @return string the user id of the owner
+     * @throws NotFoundException
+     */
+    public function getOwner($path) {
+        $info = $this->getFileInfo($path);
+        if (!$info) {
+            throw new NotFoundException($path . ' not found while trying to get owner');
+        }
+
+        if ($info->getOwner() === null) {
+            throw new NotFoundException($path . ' has no owner');
+        }
+
+        return $info->getOwner()->getUID();
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string|false
+     */
+    public function getETag($path) {
+        [$storage, $internalPath] = $this->resolvePath($path);
+        if ($storage) {
+            return $storage->getETag($internalPath);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Get the path of a file by id, relative to the view
+     *
+     * 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
+     * @param int|null $storageId
+     * @return string
+     * @throws NotFoundException
+     */
+    public function getPath($id, int $storageId = null) {
+        $id = (int)$id;
+        $manager = Filesystem::getMountManager();
+        $mounts = $manager->findIn($this->fakeRoot);
+        $mounts[] = $manager->find($this->fakeRoot);
+        $mounts = array_filter($mounts);
+        // reverse the array, so we start with the storage this view is in
+        // which is the most likely to contain the file we're looking for
+        $mounts = array_reverse($mounts);
+
+        // put non-shared mounts in front of the shared mount
+        // this prevents unneeded recursion into shares
+        usort($mounts, function (IMountPoint $a, IMountPoint $b) {
+            return $a instanceof SharedMount && (!$b instanceof SharedMount) ? 1 : -1;
+        });
+
+        if (!is_null($storageId)) {
+            $mounts = array_filter($mounts, function (IMountPoint $mount) use ($storageId) {
+                return $mount->getNumericStorageId() === $storageId;
+            });
+        }
+
+        foreach ($mounts as $mount) {
+            /**
+             * @var \OC\Files\Mount\MountPoint $mount
+             */
+            if ($mount->getStorage()) {
+                $cache = $mount->getStorage()->getCache();
+                $internalPath = $cache->getPathById($id);
+                if (is_string($internalPath)) {
+                    $fullPath = $mount->getMountPoint() . $internalPath;
+                    if (!is_null($path = $this->getRelativePath($fullPath))) {
+                        return $path;
+                    }
+                }
+            }
+        }
+        throw new NotFoundException(sprintf('File with id "%s" has not been found.', $id));
+    }
+
+    /**
+     * @param string $path
+     * @throws InvalidPathException
+     */
+    private function assertPathLength($path): void {
+        $maxLen = min(PHP_MAXPATHLEN, 4000);
+        // Check for the string length - performed using isset() instead of strlen()
+        // because isset() is about 5x-40x faster.
+        if (isset($path[$maxLen])) {
+            $pathLen = strlen($path);
+            throw new InvalidPathException("Path length($pathLen) exceeds max path length($maxLen): $path");
+        }
+    }
+
+    /**
+     * check if it is allowed to move a mount point to a given target.
+     * It is not allowed to move a mount point into a different mount point or
+     * into an already shared folder
+     */
+    private function targetIsNotShared(IStorage $targetStorage, string $targetInternalPath): bool {
+        // note: cannot use the view because the target is already locked
+        $fileId = $targetStorage->getCache()->getId($targetInternalPath);
+        if ($fileId === -1) {
+            // target might not exist, need to check parent instead
+            $fileId = $targetStorage->getCache()->getId(dirname($targetInternalPath));
+        }
+
+        // check if any of the parents were shared by the current owner (include collections)
+        $shares = Share::getItemShared(
+            'folder',
+            (string)$fileId,
+            \OC\Share\Constants::FORMAT_NONE,
+            null,
+            true
+        );
+
+        if (count($shares) > 0) {
+            $this->logger->debug(
+                'It is not allowed to move one mount point into a shared folder',
+                ['app' => 'files']);
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a fileinfo object for files that are ignored in the cache (part files)
+     */
+    private function getPartFileInfo(string $path): \OC\Files\FileInfo {
+        $mount = $this->getMount($path);
+        $storage = $mount->getStorage();
+        $internalPath = $mount->getInternalPath($this->getAbsolutePath($path));
+        $owner = \OC::$server->getUserManager()->get($storage->getOwner($internalPath));
+        return new FileInfo(
+            $this->getAbsolutePath($path),
+            $storage,
+            $internalPath,
+            [
+                'fileid' => null,
+                'mimetype' => $storage->getMimeType($internalPath),
+                'name' => basename($path),
+                'etag' => null,
+                'size' => $storage->filesize($internalPath),
+                'mtime' => $storage->filemtime($internalPath),
+                'encrypted' => false,
+                'permissions' => \OCP\Constants::PERMISSION_ALL
+            ],
+            $mount,
+            $owner
+        );
+    }
+
+    /**
+     * @param string $path
+     * @param string $fileName
+     * @throws InvalidPathException
+     */
+    public function verifyPath($path, $fileName): void {
+        try {
+            /** @type \OCP\Files\Storage $storage */
+            [$storage, $internalPath] = $this->resolvePath($path);
+            $storage->verifyPath($internalPath, $fileName);
+        } catch (ReservedWordException $ex) {
+            $l = \OC::$server->getL10N('lib');
+            throw new InvalidPathException($l->t('File name is a reserved word'));
+        } catch (InvalidCharacterInPathException $ex) {
+            $l = \OC::$server->getL10N('lib');
+            throw new InvalidPathException($l->t('File name contains at least one invalid character'));
+        } catch (FileNameTooLongException $ex) {
+            $l = \OC::$server->getL10N('lib');
+            throw new InvalidPathException($l->t('File name is too long'));
+        } catch (InvalidDirectoryException $ex) {
+            $l = \OC::$server->getL10N('lib');
+            throw new InvalidPathException($l->t('Dot files are not allowed'));
+        } catch (EmptyFileNameException $ex) {
+            $l = \OC::$server->getL10N('lib');
+            throw new InvalidPathException($l->t('Empty filename is not allowed'));
+        }
+    }
+
+    /**
+     * get all parent folders of $path
+     *
+     * @param string $path
+     * @return string[]
+     */
+    private function getParents($path) {
+        $path = trim($path, '/');
+        if (!$path) {
+            return [];
+        }
+
+        $parts = explode('/', $path);
+
+        // remove the single file
+        array_pop($parts);
+        $result = ['/'];
+        $resultPath = '';
+        foreach ($parts as $part) {
+            if ($part) {
+                $resultPath .= '/' . $part;
+                $result[] = $resultPath;
+            }
+        }
+        return $result;
+    }
+
+    /**
+     * Returns the mount point for which to lock
+     *
+     * @param string $absolutePath absolute path
+     * @param bool $useParentMount true to return parent mount instead of whatever
+     * is mounted directly on the given path, false otherwise
+     * @return IMountPoint mount point for which to apply locks
+     */
+    private function getMountForLock(string $absolutePath, bool $useParentMount = false): IMountPoint {
+        $mount = Filesystem::getMountManager()->find($absolutePath);
+
+        if ($useParentMount) {
+            // find out if something is mounted directly on the path
+            $internalPath = $mount->getInternalPath($absolutePath);
+            if ($internalPath === '') {
+                // resolve the parent mount instead
+                $mount = Filesystem::getMountManager()->find(dirname($absolutePath));
+            }
+        }
+
+        return $mount;
+    }
+
+    /**
+     * Lock the given path
+     *
+     * @param string $path the path of the file to lock, relative to the view
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
+     *
+     * @return bool False if the path is excluded from locking, true otherwise
+     * @throws LockedException if the path is already locked
+     */
+    private function lockPath($path, $type, $lockMountPoint = false) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $absolutePath = Filesystem::normalizePath($absolutePath);
+        if (!$this->shouldLockFile($absolutePath)) {
+            return false;
+        }
+
+        $mount = $this->getMountForLock($absolutePath, $lockMountPoint);
+        try {
+            $storage = $mount->getStorage();
+            if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+                $storage->acquireLock(
+                    $mount->getInternalPath($absolutePath),
+                    $type,
+                    $this->lockingProvider
+                );
+            }
+        } catch (LockedException $e) {
+            // rethrow with the a human-readable path
+            throw new LockedException(
+                $this->getPathRelativeToFiles($absolutePath),
+                $e,
+                $e->getExistingLock()
+            );
+        }
+
+        return true;
+    }
+
+    /**
+     * Change the lock type
+     *
+     * @param string $path the path of the file to lock, relative to the view
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
+     *
+     * @return bool False if the path is excluded from locking, true otherwise
+     * @throws LockedException if the path is already locked
+     */
+    public function changeLock($path, $type, $lockMountPoint = false) {
+        $path = Filesystem::normalizePath($path);
+        $absolutePath = $this->getAbsolutePath($path);
+        $absolutePath = Filesystem::normalizePath($absolutePath);
+        if (!$this->shouldLockFile($absolutePath)) {
+            return false;
+        }
+
+        $mount = $this->getMountForLock($absolutePath, $lockMountPoint);
+        try {
+            $storage = $mount->getStorage();
+            if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+                $storage->changeLock(
+                    $mount->getInternalPath($absolutePath),
+                    $type,
+                    $this->lockingProvider
+                );
+            }
+        } catch (LockedException $e) {
+            try {
+                // rethrow with the a human-readable path
+                throw new LockedException(
+                    $this->getPathRelativeToFiles($absolutePath),
+                    $e,
+                    $e->getExistingLock()
+                );
+            } catch (\InvalidArgumentException $ex) {
+                throw new LockedException(
+                    $absolutePath,
+                    $ex,
+                    $e->getExistingLock()
+                );
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Unlock the given path
+     *
+     * @param string $path the path of the file to unlock, relative to the view
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
+     *
+     * @return bool False if the path is excluded from locking, true otherwise
+     * @throws LockedException
+     */
+    private function unlockPath($path, $type, $lockMountPoint = false) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $absolutePath = Filesystem::normalizePath($absolutePath);
+        if (!$this->shouldLockFile($absolutePath)) {
+            return false;
+        }
+
+        $mount = $this->getMountForLock($absolutePath, $lockMountPoint);
+        $storage = $mount->getStorage();
+        if ($storage && $storage->instanceOfStorage('\OCP\Files\Storage\ILockingStorage')) {
+            $storage->releaseLock(
+                $mount->getInternalPath($absolutePath),
+                $type,
+                $this->lockingProvider
+            );
+        }
+
+        return true;
+    }
+
+    /**
+     * Lock a path and all its parents up to the root of the view
+     *
+     * @param string $path the path of the file to lock relative to the view
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
+     *
+     * @return bool False if the path is excluded from locking, true otherwise
+     * @throws LockedException
+     */
+    public function lockFile($path, $type, $lockMountPoint = false) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $absolutePath = Filesystem::normalizePath($absolutePath);
+        if (!$this->shouldLockFile($absolutePath)) {
+            return false;
+        }
+
+        $this->lockPath($path, $type, $lockMountPoint);
+
+        $parents = $this->getParents($path);
+        foreach ($parents as $parent) {
+            $this->lockPath($parent, ILockingProvider::LOCK_SHARED);
+        }
+
+        return true;
+    }
+
+    /**
+     * Unlock a path and all its parents up to the root of the view
+     *
+     * @param string $path the path of the file to lock relative to the view
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     * @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
+     *
+     * @return bool False if the path is excluded from locking, true otherwise
+     * @throws LockedException
+     */
+    public function unlockFile($path, $type, $lockMountPoint = false) {
+        $absolutePath = $this->getAbsolutePath($path);
+        $absolutePath = Filesystem::normalizePath($absolutePath);
+        if (!$this->shouldLockFile($absolutePath)) {
+            return false;
+        }
+
+        $this->unlockPath($path, $type, $lockMountPoint);
+
+        $parents = $this->getParents($path);
+        foreach ($parents as $parent) {
+            $this->unlockPath($parent, ILockingProvider::LOCK_SHARED);
+        }
+
+        return true;
+    }
+
+    /**
+     * Only lock files in data/user/files/
+     *
+     * @param string $path Absolute path to the file/folder we try to (un)lock
+     * @return bool
+     */
+    protected function shouldLockFile($path) {
+        $path = Filesystem::normalizePath($path);
+
+        $pathSegments = explode('/', $path);
+        if (isset($pathSegments[2])) {
+            // E.g.: /username/files/path-to-file
+            return ($pathSegments[2] === 'files') && (count($pathSegments) > 3);
+        }
+
+        return strpos($path, '/appdata_') !== 0;
+    }
+
+    /**
+     * Shortens the given absolute path to be relative to
+     * "$user/files".
+     *
+     * @param string $absolutePath absolute path which is under "files"
+     *
+     * @return string path relative to "files" with trimmed slashes or null
+     * if the path was NOT relative to files
+     *
+     * @throws \InvalidArgumentException if the given path was not under "files"
+     * @since 8.1.0
+     */
+    public function getPathRelativeToFiles($absolutePath) {
+        $path = Filesystem::normalizePath($absolutePath);
+        $parts = explode('/', trim($path, '/'), 3);
+        // "$user", "files", "path/to/dir"
+        if (!isset($parts[1]) || $parts[1] !== 'files') {
+            $this->logger->error(
+                '$absolutePath must be relative to "files", value is "{absolutePath}"',
+                [
+                    'absolutePath' => $absolutePath,
+                ]
+            );
+            throw new \InvalidArgumentException('$absolutePath must be relative to "files"');
+        }
+        if (isset($parts[2])) {
+            return $parts[2];
+        }
+        return '';
+    }
+
+    /**
+     * @param string $filename
+     * @return array
+     * @throws \OC\User\NoUserException
+     * @throws NotFoundException
+     */
+    public function getUidAndFilename($filename) {
+        $info = $this->getFileInfo($filename);
+        if (!$info instanceof \OCP\Files\FileInfo) {
+            throw new NotFoundException($this->getAbsolutePath($filename) . ' not found');
+        }
+        $uid = $info->getOwner()->getUID();
+        if ($uid != \OC_User::getUser()) {
+            Filesystem::initMountPoints($uid);
+            $ownerView = new View('/' . $uid . '/files');
+            try {
+                $filename = $ownerView->getPath($info['fileid']);
+            } catch (NotFoundException $e) {
+                throw new NotFoundException('File with id ' . $info['fileid'] . ' not found for user ' . $uid);
+            }
+        }
+        return [$uid, $filename];
+    }
+
+    /**
+     * Creates parent non-existing folders
+     *
+     * @param string $filePath
+     * @return bool
+     */
+    private function createParentDirectories($filePath) {
+        $directoryParts = explode('/', $filePath);
+        $directoryParts = array_filter($directoryParts);
+        foreach ($directoryParts as $key => $part) {
+            $currentPathElements = array_slice($directoryParts, 0, $key);
+            $currentPath = '/' . implode('/', $currentPathElements);
+            if ($this->is_file($currentPath)) {
+                return false;
+            }
+            if (!$this->file_exists($currentPath)) {
+                $this->mkdir($currentPath);
+            }
+        }
+
+        return true;
+    }
 }