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![Joas Schilling](/assets/img/avatar_default.png)
Signed-off-by: Joas Schilling <coding@schilljs.com> Signed-off-by: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>
767 lines
20 KiB
PHP
767 lines
20 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Christopher Schäpers <kondou@ts.unde.re>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Florin Peter <github@florin-peter.de>
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* @author Joas Schilling <coding@schilljs.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author korelstar <korelstar@users.noreply.github.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Michael Gapczynski <GapczynskiM@gmail.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Sam Tuke <mail@samtuke.com>
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* @author Stephan Peijnik <speijnik@anexia-it.com>
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* @author Vincent Petry <vincent@nextcloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files;
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use OC\Files\Mount\MountPoint;
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use OC\User\NoUserException;
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use OCP\Cache\CappedMemoryCache;
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use OCP\EventDispatcher\IEventDispatcher;
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use OCP\Files\Events\Node\FilesystemTornDownEvent;
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use OCP\Files\Mount\IMountManager;
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use OCP\Files\NotFoundException;
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use OCP\Files\Storage\IStorageFactory;
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use OCP\IUser;
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use OCP\IUserManager;
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use OCP\IUserSession;
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class Filesystem {
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private static ?Mount\Manager $mounts = null;
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public static bool $loaded = false;
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private static ?View $defaultInstance = null;
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private static ?CappedMemoryCache $normalizedPathCache = null;
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/** @var string[]|null */
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private static ?array $blacklist = null;
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/**
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* classname which used for hooks handling
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* used as signalclass in OC_Hooks::emit()
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*/
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public const CLASSNAME = 'OC_Filesystem';
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/**
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* signalname emitted before file renaming
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*
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* @param string $oldpath
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* @param string $newpath
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*/
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public const signal_rename = 'rename';
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/**
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* signal emitted after file renaming
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*
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* @param string $oldpath
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* @param string $newpath
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*/
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public const signal_post_rename = 'post_rename';
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/**
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* signal emitted before file/dir creation
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*
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* @param string $path
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_create = 'create';
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/**
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* signal emitted after file/dir creation
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*
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* @param string $path
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_post_create = 'post_create';
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/**
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* signal emits before file/dir copy
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*
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* @param string $oldpath
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* @param string $newpath
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_copy = 'copy';
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/**
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* signal emits after file/dir copy
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*
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* @param string $oldpath
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* @param string $newpath
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*/
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public const signal_post_copy = 'post_copy';
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/**
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* signal emits before file/dir save
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*
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* @param string $path
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_write = 'write';
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/**
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* signal emits after file/dir save
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*
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* @param string $path
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*/
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public const signal_post_write = 'post_write';
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/**
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* signal emitted before file/dir update
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*
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* @param string $path
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_update = 'update';
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/**
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* signal emitted after file/dir update
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*
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* @param string $path
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* @param bool $run changing this flag to false in hook handler will cancel event
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*/
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public const signal_post_update = 'post_update';
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/**
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* signal emits when reading file/dir
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*
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* @param string $path
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*/
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public const signal_read = 'read';
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/**
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* signal emits when removing file/dir
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*
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* @param string $path
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*/
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public const signal_delete = 'delete';
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/**
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* parameters definitions for signals
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*/
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public const signal_param_path = 'path';
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public const signal_param_oldpath = 'oldpath';
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public const signal_param_newpath = 'newpath';
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/**
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* run - changing this flag to false in hook handler will cancel event
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*/
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public const signal_param_run = 'run';
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public const signal_create_mount = 'create_mount';
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public const signal_delete_mount = 'delete_mount';
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public const signal_param_mount_type = 'mounttype';
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public const signal_param_users = 'users';
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private static ?\OC\Files\Storage\StorageFactory $loader = null;
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private static bool $logWarningWhenAddingStorageWrapper = true;
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/**
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* @param bool $shouldLog
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* @return bool previous value
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* @internal
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*/
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public static function logWarningWhenAddingStorageWrapper(bool $shouldLog): bool {
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$previousValue = self::$logWarningWhenAddingStorageWrapper;
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self::$logWarningWhenAddingStorageWrapper = $shouldLog;
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return $previousValue;
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}
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/**
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* @param string $wrapperName
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* @param callable $wrapper
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* @param int $priority
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*/
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public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
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if (self::$logWarningWhenAddingStorageWrapper) {
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\OC::$server->getLogger()->warning("Storage wrapper '{wrapper}' was not registered via the 'OC_Filesystem - preSetup' hook which could cause potential problems.", [
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'wrapper' => $wrapperName,
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'app' => 'filesystem',
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]);
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}
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$mounts = self::getMountManager()->getAll();
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if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
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// do not re-wrap if storage with this name already existed
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return;
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}
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}
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/**
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* Returns the storage factory
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*
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* @return IStorageFactory
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*/
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public static function getLoader() {
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if (!self::$loader) {
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self::$loader = \OC::$server->get(IStorageFactory::class);
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}
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return self::$loader;
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}
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/**
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* Returns the mount manager
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*/
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public static function getMountManager(): Mount\Manager {
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self::initMountManager();
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assert(self::$mounts !== null);
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return self::$mounts;
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}
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/**
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* get the mountpoint of the storage object for a path
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* ( note: because a storage is not always mounted inside the fakeroot, the
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* returned mountpoint is relative to the absolute root of the filesystem
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* and doesn't take the chroot into account )
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*
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* @param string $path
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* @return string
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*/
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public static function getMountPoint($path) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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$mount = self::$mounts->find($path);
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return $mount->getMountPoint();
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}
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/**
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* get a list of all mount points in a directory
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*
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* @param string $path
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* @return string[]
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*/
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public static function getMountPoints($path) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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$result = [];
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$mounts = self::$mounts->findIn($path);
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foreach ($mounts as $mount) {
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$result[] = $mount->getMountPoint();
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}
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return $result;
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}
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/**
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* get the storage mounted at $mountPoint
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*
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* @param string $mountPoint
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* @return \OC\Files\Storage\Storage|null
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*/
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public static function getStorage($mountPoint) {
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$mount = self::getMountManager()->find($mountPoint);
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return $mount->getStorage();
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}
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/**
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* @param string $id
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* @return Mount\MountPoint[]
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*/
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public static function getMountByStorageId($id) {
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return self::getMountManager()->findByStorageId($id);
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}
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/**
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* @param int $id
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* @return Mount\MountPoint[]
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*/
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public static function getMountByNumericId($id) {
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return self::getMountManager()->findByNumericId($id);
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}
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/**
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* resolve a path to a storage and internal path
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*
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* @param string $path
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* @return array{?\OCP\Files\Storage\IStorage, string} an array consisting of the storage and the internal path
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*/
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public static function resolvePath($path): array {
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$mount = self::getMountManager()->find($path);
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return [$mount->getStorage(), rtrim($mount->getInternalPath($path), '/')];
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}
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public static function init(string|IUser|null $user, string $root): bool {
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if (self::$defaultInstance) {
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return false;
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}
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self::initInternal($root);
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//load custom mount config
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self::initMountPoints($user);
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return true;
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}
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public static function initInternal(string $root): bool {
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if (self::$defaultInstance) {
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return false;
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}
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self::getLoader();
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self::$defaultInstance = new View($root);
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/** @var IEventDispatcher $eventDispatcher */
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$eventDispatcher = \OC::$server->get(IEventDispatcher::class);
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$eventDispatcher->addListener(FilesystemTornDownEvent::class, function () {
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self::$defaultInstance = null;
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self::$loaded = false;
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});
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self::initMountManager();
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self::$loaded = true;
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return true;
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}
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public static function initMountManager(): void {
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if (!self::$mounts) {
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self::$mounts = \OC::$server->get(IMountManager::class);
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}
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}
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/**
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* Initialize system and personal mount points for a user
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*
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* @throws \OC\User\NoUserException if the user is not available
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*/
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public static function initMountPoints(string|IUser|null $user = ''): void {
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/** @var IUserManager $userManager */
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$userManager = \OC::$server->get(IUserManager::class);
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$userObject = ($user instanceof IUser) ? $user : $userManager->get($user);
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if ($userObject) {
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/** @var SetupManager $setupManager */
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$setupManager = \OC::$server->get(SetupManager::class);
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$setupManager->setupForUser($userObject);
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} else {
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throw new NoUserException();
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}
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}
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/**
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* Get the default filesystem view
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*/
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public static function getView(): ?View {
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if (!self::$defaultInstance) {
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/** @var IUserSession $session */
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$session = \OC::$server->get(IUserSession::class);
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$user = $session->getUser();
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if ($user) {
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$userDir = '/' . $user->getUID() . '/files';
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self::initInternal($userDir);
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}
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}
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return self::$defaultInstance;
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}
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/**
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* tear down the filesystem, removing all storage providers
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*/
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public static function tearDown() {
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\OC_Util::tearDownFS();
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}
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/**
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* get the relative path of the root data directory for the current user
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*
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* @return ?string
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*
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* Returns path like /admin/files
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*/
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public static function getRoot() {
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if (!self::$defaultInstance) {
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return null;
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}
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return self::$defaultInstance->getRoot();
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}
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/**
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* mount an \OC\Files\Storage\Storage in our virtual filesystem
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*
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* @param \OC\Files\Storage\Storage|string $class
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* @param array $arguments
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* @param string $mountpoint
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*/
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public static function mount($class, $arguments, $mountpoint) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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$mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
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self::$mounts->addMount($mount);
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}
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/**
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* return the path to a local version of the file
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* we need this because we can't know if a file is stored local or not from
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* outside the filestorage and for some purposes a local file is needed
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*/
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public static function getLocalFile(string $path): string|false {
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return self::$defaultInstance->getLocalFile($path);
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}
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/**
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* return path to file which reflects one visible in browser
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*
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* @param string $path
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* @return string
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*/
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public static function getLocalPath($path) {
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$datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
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$newpath = $path;
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if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
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$newpath = substr($path, strlen($datadir));
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}
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return $newpath;
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}
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/**
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* check if the requested path is valid
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*
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* @param string $path
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* @return bool
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*/
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public static function isValidPath($path) {
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$path = self::normalizePath($path);
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if (!$path || $path[0] !== '/') {
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$path = '/' . $path;
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}
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if (str_contains($path, '/../') || strrchr($path, '/') === '/..') {
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return false;
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}
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return true;
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}
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/**
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* @param string $filename
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* @return bool
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*/
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public static function isFileBlacklisted($filename) {
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$filename = self::normalizePath($filename);
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if (self::$blacklist === null) {
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self::$blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', ['.htaccess']);
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}
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$filename = strtolower(basename($filename));
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return in_array($filename, self::$blacklist);
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}
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/**
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* check if the directory should be ignored when scanning
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* NOTE: the special directories . and .. would cause never ending recursion
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*
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* @param string $dir
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* @return boolean
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*/
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public static function isIgnoredDir($dir) {
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if ($dir === '.' || $dir === '..') {
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return true;
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}
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return false;
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}
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/**
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* following functions are equivalent to their php builtin equivalents for arguments/return values.
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*/
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public static function mkdir($path) {
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return self::$defaultInstance->mkdir($path);
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}
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public static function rmdir($path) {
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return self::$defaultInstance->rmdir($path);
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}
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public static function is_dir($path) {
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return self::$defaultInstance->is_dir($path);
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}
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public static function is_file($path) {
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return self::$defaultInstance->is_file($path);
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}
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public static function stat($path) {
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return self::$defaultInstance->stat($path);
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}
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public static function filetype($path) {
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return self::$defaultInstance->filetype($path);
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}
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public static function filesize($path) {
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return self::$defaultInstance->filesize($path);
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}
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public static function readfile($path) {
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return self::$defaultInstance->readfile($path);
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}
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public static function isCreatable($path) {
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return self::$defaultInstance->isCreatable($path);
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}
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public static function isReadable($path) {
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return self::$defaultInstance->isReadable($path);
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}
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public static function isUpdatable($path) {
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return self::$defaultInstance->isUpdatable($path);
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}
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public static function isDeletable($path) {
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return self::$defaultInstance->isDeletable($path);
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}
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public static function isSharable($path) {
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return self::$defaultInstance->isSharable($path);
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}
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public static function file_exists($path) {
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return self::$defaultInstance->file_exists($path);
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}
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public static function filemtime($path) {
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return self::$defaultInstance->filemtime($path);
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}
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public static function touch($path, $mtime = null) {
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return self::$defaultInstance->touch($path, $mtime);
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}
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/**
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* @return string|false
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*/
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public static function file_get_contents($path) {
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return self::$defaultInstance->file_get_contents($path);
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}
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public static function file_put_contents($path, $data) {
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return self::$defaultInstance->file_put_contents($path, $data);
|
|
}
|
|
|
|
public static function unlink($path) {
|
|
return self::$defaultInstance->unlink($path);
|
|
}
|
|
|
|
public static function rename($source, $target) {
|
|
return self::$defaultInstance->rename($source, $target);
|
|
}
|
|
|
|
public static function copy($source, $target) {
|
|
return self::$defaultInstance->copy($source, $target);
|
|
}
|
|
|
|
public static function fopen($path, $mode) {
|
|
return self::$defaultInstance->fopen($path, $mode);
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @throws \OCP\Files\InvalidPathException
|
|
*/
|
|
public static function toTmpFile($path): string|false {
|
|
return self::$defaultInstance->toTmpFile($path);
|
|
}
|
|
|
|
public static function fromTmpFile($tmpFile, $path) {
|
|
return self::$defaultInstance->fromTmpFile($tmpFile, $path);
|
|
}
|
|
|
|
public static function getMimeType($path) {
|
|
return self::$defaultInstance->getMimeType($path);
|
|
}
|
|
|
|
public static function hash($type, $path, $raw = false) {
|
|
return self::$defaultInstance->hash($type, $path, $raw);
|
|
}
|
|
|
|
public static function free_space($path = '/') {
|
|
return self::$defaultInstance->free_space($path);
|
|
}
|
|
|
|
public static function search($query) {
|
|
return self::$defaultInstance->search($query);
|
|
}
|
|
|
|
/**
|
|
* @param string $query
|
|
*/
|
|
public static function searchByMime($query) {
|
|
return self::$defaultInstance->searchByMime($query);
|
|
}
|
|
|
|
/**
|
|
* @param string|int $tag name or tag id
|
|
* @param string $userId owner of the tags
|
|
* @return FileInfo[] array or file info
|
|
*/
|
|
public static function searchByTag($tag, $userId) {
|
|
return self::$defaultInstance->searchByTag($tag, $userId);
|
|
}
|
|
|
|
/**
|
|
* check if a file or folder has been updated since $time
|
|
*
|
|
* @param string $path
|
|
* @param int $time
|
|
* @return bool
|
|
*/
|
|
public static function hasUpdated($path, $time) {
|
|
return self::$defaultInstance->hasUpdated($path, $time);
|
|
}
|
|
|
|
/**
|
|
* Fix common problems with a file path
|
|
*
|
|
* @param string $path
|
|
* @param bool $stripTrailingSlash whether to strip the trailing slash
|
|
* @param bool $isAbsolutePath whether the given path is absolute
|
|
* @param bool $keepUnicode true to disable unicode normalization
|
|
* @psalm-taint-escape file
|
|
* @return string
|
|
*/
|
|
public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false, $keepUnicode = false) {
|
|
/**
|
|
* FIXME: This is a workaround for existing classes and files which call
|
|
* this function with another type than a valid string. This
|
|
* conversion should get removed as soon as all existing
|
|
* function calls have been fixed.
|
|
*/
|
|
$path = (string)$path;
|
|
|
|
if ($path === '') {
|
|
return '/';
|
|
}
|
|
|
|
if (is_null(self::$normalizedPathCache)) {
|
|
self::$normalizedPathCache = new CappedMemoryCache(2048);
|
|
}
|
|
|
|
$cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
|
|
|
|
if ($cacheKey && isset(self::$normalizedPathCache[$cacheKey])) {
|
|
return self::$normalizedPathCache[$cacheKey];
|
|
}
|
|
|
|
//normalize unicode if possible
|
|
if (!$keepUnicode) {
|
|
$path = \OC_Util::normalizeUnicode($path);
|
|
}
|
|
|
|
//add leading slash, if it is already there we strip it anyway
|
|
$path = '/' . $path;
|
|
|
|
$patterns = [
|
|
'#\\\\#s', // no windows style '\\' slashes
|
|
'#/\.(/\.)*/#s', // remove '/./'
|
|
'#\//+#s', // remove sequence of slashes
|
|
'#/\.$#s', // remove trailing '/.'
|
|
];
|
|
|
|
do {
|
|
$count = 0;
|
|
$path = preg_replace($patterns, '/', $path, -1, $count);
|
|
} while ($count > 0);
|
|
|
|
//remove trailing slash
|
|
if ($stripTrailingSlash && strlen($path) > 1) {
|
|
$path = rtrim($path, '/');
|
|
}
|
|
|
|
self::$normalizedPathCache[$cacheKey] = $path;
|
|
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* get the filesystem info
|
|
*
|
|
* @param string $path
|
|
* @param bool|string $includeMountPoints whether to add mountpoint sizes,
|
|
* defaults to true
|
|
* @return \OC\Files\FileInfo|false False if file does not exist
|
|
*/
|
|
public static function getFileInfo($path, $includeMountPoints = true) {
|
|
return self::getView()->getFileInfo($path, $includeMountPoints);
|
|
}
|
|
|
|
/**
|
|
* change file metadata
|
|
*
|
|
* @param string $path
|
|
* @param array $data
|
|
* @return int
|
|
*
|
|
* returns the fileid of the updated file
|
|
*/
|
|
public static function putFileInfo($path, $data) {
|
|
return self::$defaultInstance->putFileInfo($path, $data);
|
|
}
|
|
|
|
/**
|
|
* get the content of a directory
|
|
*
|
|
* @param string $directory path under datadirectory
|
|
* @param string $mimetype_filter limit returned content to this mimetype or mimepart
|
|
* @return \OC\Files\FileInfo[]
|
|
*/
|
|
public static function getDirectoryContent($directory, $mimetype_filter = '') {
|
|
return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
|
|
}
|
|
|
|
/**
|
|
* Get the path of a file by id
|
|
*
|
|
* Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
|
|
*
|
|
* @param int $id
|
|
* @throws NotFoundException
|
|
* @return string
|
|
*/
|
|
public static function getPath($id) {
|
|
return self::$defaultInstance->getPath($id);
|
|
}
|
|
|
|
/**
|
|
* Get the owner for a file or folder
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
public static function getOwner($path) {
|
|
return self::$defaultInstance->getOwner($path);
|
|
}
|
|
|
|
/**
|
|
* get the ETag for a file or folder
|
|
*/
|
|
public static function getETag(string $path): string|false {
|
|
return self::$defaultInstance->getETag($path);
|
|
}
|
|
}
|