816 lines
19 KiB
PHP
816 lines
19 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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/**
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* Class for abstraction of filesystem functions
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* This class won't call any filesystem functions for itself but will pass them to the correct OC_Filestorage object
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* this class should also handle all the file permission related stuff
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*
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* Hooks provided:
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* read(path)
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* write(path, &run)
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* post_write(path)
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* create(path, &run) (when a file is created, both create and write will be emitted in that order)
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* post_create(path)
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* delete(path, &run)
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* post_delete(path)
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* rename(oldpath,newpath, &run)
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* post_rename(oldpath,newpath)
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* copy(oldpath,newpath, &run) (if the newpath doesn't exists yes, copy, create and write will be emitted in that order)
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* post_rename(oldpath,newpath)
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* post_initMountPoints(user, user_dir)
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*
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* the &run parameter can be set to false to prevent the operation from occurring
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*/
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namespace OC\Files;
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use OC\Files\Storage\Loader;
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class Filesystem {
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/**
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* @var Mount\Manager $mounts
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*/
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private static $mounts;
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public static $loaded = false;
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/**
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* @var \OC\Files\View $defaultInstance
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*/
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static private $defaultInstance;
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static private $usersSetup = array();
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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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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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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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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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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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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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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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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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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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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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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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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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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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const signal_delete = 'delete';
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/**
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* parameters definitions for signals
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*/
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const signal_param_path = 'path';
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const signal_param_oldpath = 'oldpath';
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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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const signal_param_run = 'run';
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const signal_create_mount = 'create_mount';
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const signal_delete_mount = 'delete_mount';
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const signal_param_mount_type = 'mounttype';
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const signal_param_users = 'users';
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/**
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* @var \OC\Files\Storage\Loader $loader
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*/
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private static $loader;
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/**
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* @param callable $wrapper
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*/
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public static function addStorageWrapper($wrapperName, $wrapper) {
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self::getLoader()->addStorageWrapper($wrapperName, $wrapper);
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$mounts = self::getMountManager()->getAll();
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foreach ($mounts as $mount) {
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$mount->wrapStorage($wrapper);
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}
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}
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public static function getLoader() {
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if (!self::$loader) {
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self::$loader = new Loader();
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}
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return self::$loader;
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}
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public static function getMountManager() {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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return self::$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 $path
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* @return string
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*/
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static public function getMountPoint($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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if ($mount) {
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return $mount->getMountPoint();
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} else {
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return '';
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}
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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 $path
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* @return string[]
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*/
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static public function getMountPoints($path) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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$result = array();
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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 $mountPoint
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* @return \OC\Files\Storage\Storage
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*/
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public static function getStorage($mountPoint) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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$mount = self::$mounts->find($mountPoint);
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return $mount->getStorage();
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}
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/**
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* @param string $id
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* @return Mount\Mount[]
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*/
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public static function getMountByStorageId($id) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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return self::$mounts->findByStorageId($id);
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}
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/**
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* @param int $id
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* @return Mount\Mount[]
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*/
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public static function getMountByNumericId($id) {
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if (!self::$mounts) {
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\OC_Util::setupFS();
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}
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return self::$mounts->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 $path
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* @return array an array consisting of the storage and the internal path
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*/
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static public function resolvePath($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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if ($mount) {
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return array($mount->getStorage(), $mount->getInternalPath($path));
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} else {
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return array(null, null);
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}
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}
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static public function init($user, $root) {
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if (self::$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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if (!self::$mounts) {
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self::$mounts = new Mount\Manager();
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}
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//load custom mount config
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self::initMountPoints($user);
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self::$loaded = true;
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return true;
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}
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static public function initMounts() {
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if (!self::$mounts) {
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self::$mounts = new Mount\Manager();
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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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* @param string $user
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*/
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public static function initMountPoints($user = '') {
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if ($user == '') {
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$user = \OC_User::getUser();
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}
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if (isset(self::$usersSetup[$user])) {
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return;
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}
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self::$usersSetup[$user] = true;
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$root = \OC_User::getHome($user);
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$userObject = \OC_User::getManager()->get($user);
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if (!is_null($userObject)) {
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$homeStorage = \OC_Config::getValue( 'objectstore' );
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if (!empty($homeStorage)) {
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// sanity checks
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if (empty($homeStorage['class'])) {
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\OCP\Util::writeLog('files', 'No class given for objectstore', \OCP\Util::ERROR);
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}
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if (!isset($homeStorage['arguments'])) {
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$homeStorage['arguments'] = array();
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}
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// instantiate object store implementation
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$homeStorage['arguments']['objectstore'] = new $homeStorage['class']($homeStorage['arguments']);
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// mount with home object store implementation
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$homeStorage['class'] = '\OC\Files\ObjectStore\HomeObjectStoreStorage';
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} else {
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$homeStorage = array(
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//default home storage configuration:
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'class' => '\OC\Files\Storage\Home',
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'arguments' => array()
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);
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}
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$homeStorage['arguments']['user'] = $userObject;
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// check for legacy home id (<= 5.0.12)
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if (\OC\Files\Cache\Storage::exists('local::' . $root . '/')) {
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$homeStorage['arguments']['legacy'] = true;
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}
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self::mount($homeStorage['class'], $homeStorage['arguments'], $user);
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$home = \OC\Files\Filesystem::getStorage($user);
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}
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else {
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self::mount('\OC\Files\Storage\Local', array('datadir' => $root), $user);
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}
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self::mountCacheDir($user);
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// Chance to mount for other storages
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\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user, 'user_dir' => $root));
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}
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/**
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* Mounts the cache directory
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* @param string $user user name
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*/
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private static function mountCacheDir($user) {
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$cacheBaseDir = \OC_Config::getValue('cache_path', '');
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if ($cacheBaseDir === '') {
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// use local cache dir relative to the user's home
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$subdir = 'cache';
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$view = new \OC\Files\View('/' . $user);
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if(!$view->file_exists($subdir)) {
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$view->mkdir($subdir);
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}
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} else {
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$cacheDir = rtrim($cacheBaseDir, '/') . '/' . $user;
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if (!file_exists($cacheDir)) {
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mkdir($cacheDir, 0770, true);
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}
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// mount external cache dir to "/$user/cache" mount point
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self::mount('\OC\Files\Storage\Local', array('datadir' => $cacheDir), '/' . $user . '/cache');
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}
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}
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/**
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* get the default filesystem view
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*
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* @return View
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*/
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static public function getView() {
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return self::$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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static public function tearDown() {
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self::clearMounts();
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self::$defaultInstance = null;
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}
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/**
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* get the relative path of the root data directory for the current user
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* @return string
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*
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* Returns path like /admin/files
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*/
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static public function getRoot() {
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if (!self::$defaultInstance) {
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return null;
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}
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return self::$defaultInstance->getRoot();
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}
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/**
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* clear all mounts and storage backends
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*/
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public static function clearMounts() {
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if (self::$mounts) {
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self::$usersSetup = array();
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self::$mounts->clear();
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}
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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 $mountpoint
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*/
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static public function mount($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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$mount = new Mount\Mount($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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* @param string $path
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* @return string
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*/
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static public function getLocalFile($path) {
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return self::$defaultInstance->getLocalFile($path);
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}
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/**
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* @param string $path
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* @return string
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*/
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static public function getLocalFolder($path) {
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return self::$defaultInstance->getLocalFolder($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 $path
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* @return string
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*/
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static public function getLocalPath($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 $path
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* @return bool
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*/
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static public function isValidPath($path) {
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$path = self::normalizePath($path);
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if (!$path || $path[0] !== '/') {
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$path = '/' . $path;
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}
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if (strstr($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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* checks if a file is blacklisted for storage in the filesystem
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* Listens to write and rename hooks
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*
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* @param array $data from hook
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*/
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static public function isBlacklisted($data) {
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if (isset($data['path'])) {
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$path = $data['path'];
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} else if (isset($data['newpath'])) {
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$path = $data['newpath'];
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}
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if (isset($path)) {
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if (self::isFileBlacklisted($path)) {
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$data['run'] = false;
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}
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}
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}
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/**
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* @param string $filename
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* @return bool
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*/
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static public function isFileBlacklisted($filename) {
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$blacklist = \OC_Config::getValue('blacklisted_files', array('.htaccess'));
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$filename = strtolower(basename($filename));
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return (in_array($filename, $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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* @param String $dir
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* @return boolean
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*/
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static public function isIgnoredDir($dir) {
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if ($dir === '.' || $dir === '..') {
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return true;
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}
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return false;
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}
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/**
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* following functions are equivalent to their php builtin equivalents for arguments/return values.
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*/
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static public function mkdir($path) {
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return self::$defaultInstance->mkdir($path);
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}
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static public function rmdir($path) {
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return self::$defaultInstance->rmdir($path);
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}
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static public function opendir($path) {
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return self::$defaultInstance->opendir($path);
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}
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static public function readdir($path) {
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return self::$defaultInstance->readdir($path);
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}
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static public function is_dir($path) {
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return self::$defaultInstance->is_dir($path);
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}
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static public function is_file($path) {
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return self::$defaultInstance->is_file($path);
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}
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static public function stat($path) {
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return self::$defaultInstance->stat($path);
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}
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static public function filetype($path) {
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return self::$defaultInstance->filetype($path);
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}
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static public function filesize($path) {
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return self::$defaultInstance->filesize($path);
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}
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static public function readfile($path) {
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return self::$defaultInstance->readfile($path);
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}
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static public function isCreatable($path) {
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return self::$defaultInstance->isCreatable($path);
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}
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static public function isReadable($path) {
|
|
return self::$defaultInstance->isReadable($path);
|
|
}
|
|
|
|
static public function isUpdatable($path) {
|
|
return self::$defaultInstance->isUpdatable($path);
|
|
}
|
|
|
|
static public function isDeletable($path) {
|
|
return self::$defaultInstance->isDeletable($path);
|
|
}
|
|
|
|
static public function isSharable($path) {
|
|
return self::$defaultInstance->isSharable($path);
|
|
}
|
|
|
|
static public function file_exists($path) {
|
|
return self::$defaultInstance->file_exists($path);
|
|
}
|
|
|
|
static public function filemtime($path) {
|
|
return self::$defaultInstance->filemtime($path);
|
|
}
|
|
|
|
static public function touch($path, $mtime = null) {
|
|
return self::$defaultInstance->touch($path, $mtime);
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
static public function file_get_contents($path) {
|
|
return self::$defaultInstance->file_get_contents($path);
|
|
}
|
|
|
|
static public function file_put_contents($path, $data) {
|
|
return self::$defaultInstance->file_put_contents($path, $data);
|
|
}
|
|
|
|
static public function unlink($path) {
|
|
return self::$defaultInstance->unlink($path);
|
|
}
|
|
|
|
static public function rename($path1, $path2) {
|
|
return self::$defaultInstance->rename($path1, $path2);
|
|
}
|
|
|
|
static public function copy($path1, $path2) {
|
|
return self::$defaultInstance->copy($path1, $path2);
|
|
}
|
|
|
|
static public function fopen($path, $mode) {
|
|
return self::$defaultInstance->fopen($path, $mode);
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
static public function toTmpFile($path) {
|
|
return self::$defaultInstance->toTmpFile($path);
|
|
}
|
|
|
|
static public function fromTmpFile($tmpFile, $path) {
|
|
return self::$defaultInstance->fromTmpFile($tmpFile, $path);
|
|
}
|
|
|
|
static public function getMimeType($path) {
|
|
return self::$defaultInstance->getMimeType($path);
|
|
}
|
|
|
|
static public function hash($type, $path, $raw = false) {
|
|
return self::$defaultInstance->hash($type, $path, $raw);
|
|
}
|
|
|
|
static public function free_space($path = '/') {
|
|
return self::$defaultInstance->free_space($path);
|
|
}
|
|
|
|
static public function search($query) {
|
|
return self::$defaultInstance->search($query);
|
|
}
|
|
|
|
/**
|
|
* @param string $query
|
|
*/
|
|
static public function searchByMime($query) {
|
|
return self::$defaultInstance->searchByMime($query);
|
|
}
|
|
|
|
/**
|
|
* check if a file or folder has been updated since $time
|
|
*
|
|
* @param string $path
|
|
* @param int $time
|
|
* @return bool
|
|
*/
|
|
static public function hasUpdated($path, $time) {
|
|
return self::$defaultInstance->hasUpdated($path, $time);
|
|
}
|
|
|
|
/**
|
|
* Fix common problems with a file path
|
|
* @param string $path
|
|
* @param bool $stripTrailingSlash
|
|
* @return string
|
|
*/
|
|
public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false) {
|
|
if ($path == '') {
|
|
return '/';
|
|
}
|
|
|
|
//no windows style slashes
|
|
$path = str_replace('\\', '/', $path);
|
|
|
|
// When normalizing an absolute path, we need to ensure that the drive-letter
|
|
// is still at the beginning on windows
|
|
$windows_drive_letter = '';
|
|
if ($isAbsolutePath && \OC_Util::runningOnWindows() && preg_match('#^([a-zA-Z])$#', $path[0]) && $path[1] == ':' && $path[2] == '/') {
|
|
$windows_drive_letter = substr($path, 0, 2);
|
|
$path = substr($path, 2);
|
|
}
|
|
|
|
//add leading slash
|
|
if ($path[0] !== '/') {
|
|
$path = '/' . $path;
|
|
}
|
|
|
|
// remove '/./'
|
|
// ugly, but str_replace() can't replace them all in one go
|
|
// as the replacement itself is part of the search string
|
|
// which will only be found during the next iteration
|
|
while (strpos($path, '/./') !== false) {
|
|
$path = str_replace('/./', '/', $path);
|
|
}
|
|
// remove sequences of slashes
|
|
$path = preg_replace('#/{2,}#', '/', $path);
|
|
|
|
//remove trailing slash
|
|
if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
|
|
$path = substr($path, 0, -1);
|
|
}
|
|
|
|
// remove trailing '/.'
|
|
if (substr($path, -2) == '/.') {
|
|
$path = substr($path, 0, -2);
|
|
}
|
|
|
|
//normalize unicode if possible
|
|
$path = \OC_Util::normalizeUnicode($path);
|
|
|
|
return $windows_drive_letter . $path;
|
|
}
|
|
|
|
/**
|
|
* get the filesystem info
|
|
*
|
|
* @param string $path
|
|
* @param boolean $includeMountPoints whether to add mountpoint sizes,
|
|
* defaults to true
|
|
* @return \OC\Files\FileInfo
|
|
*/
|
|
public static function getFileInfo($path, $includeMountPoints = true) {
|
|
return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
|
|
}
|
|
|
|
/**
|
|
* change file metadata
|
|
*
|
|
* @param string $path
|
|
* @param array $data
|
|
* @return int
|
|
*
|
|
* returns the fileid of the updated file
|
|
*/
|
|
public static function putFileInfo($path, $data) {
|
|
return self::$defaultInstance->putFileInfo($path, $data);
|
|
}
|
|
|
|
/**
|
|
* get the content of a directory
|
|
*
|
|
* @param string $directory path under datadirectory
|
|
* @param string $mimetype_filter limit returned content to this mimetype or mimepart
|
|
* @return \OC\Files\FileInfo[]
|
|
*/
|
|
public static function getDirectoryContent($directory, $mimetype_filter = '') {
|
|
return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
|
|
}
|
|
|
|
/**
|
|
* Get the path of a file by id
|
|
*
|
|
* Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
|
|
*
|
|
* @param int $id
|
|
* @return string
|
|
*/
|
|
public static function getPath($id) {
|
|
return self::$defaultInstance->getPath($id);
|
|
}
|
|
|
|
/**
|
|
* Get the owner for a file or folder
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
public static function getOwner($path) {
|
|
return self::$defaultInstance->getOwner($path);
|
|
}
|
|
|
|
/**
|
|
* get the ETag for a file or folder
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
static public function getETag($path) {
|
|
return self::$defaultInstance->getETag($path);
|
|
}
|
|
}
|