nextcloud/lib/private/files/view.php

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<?php
/**
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* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Björn Schießle <schiessle@owncloud.com>
* @author cmeh <cmeh@users.noreply.github.com>
* @author Florin Peter <github@florin-peter.de>
* @author Jesus Macias <jmacias@full-on-net.com>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Klaas Freitag <freitag@owncloud.com>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Luke Policinski <lpolicinski@gmail.com>
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* @author Martin Mattel <martin.mattel@diemattels.at>
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* @author Michael Gapczynski <GapczynskiM@gmail.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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* @author Roman Geber <rgeber@owncloudapps.com>
* @author Sam Tuke <mail@samtuke.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
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namespace OC\Files;
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use Icewind\Streams\CallbackWrapper;
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use OC\Files\Cache\Updater;
use OC\Files\Mount\MoveableMount;
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use OC\Files\Storage\Storage;
use OC\User\User;
use OCP\Files\FileNameTooLongException;
use OCP\Files\InvalidCharacterInPathException;
use OCP\Files\InvalidPathException;
use OCP\Files\NotFoundException;
use OCP\Files\ReservedWordException;
use OCP\IUser;
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use OCP\Lock\ILockingProvider;
use OCP\Lock\LockedException;
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/**
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* Class to provide access to ownCloud filesystem via a "view", and methods for
* working with files within that view (e.g. read, write, delete, etc.). Each
* view is restricted to a set of directories via a virtual root. The default view
* uses the currently logged in user's data directory as root (parts of
* OC_Filesystem are merely a wrapper for OC\Files\View).
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*
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* Apps that need to access files outside of the user data folders (to modify files
* belonging to a user other than the one currently logged in, for example) should
* use this class directly rather than using OC_Filesystem, or making use of PHP's
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* built-in file manipulation functions. This will ensure all hooks and proxies
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* are triggered correctly.
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*
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* Filesystem functions are not called directly; they are passed to the correct
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* \OC\Files\Storage\Storage object
*/
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class View {
/** @var string */
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private $fakeRoot = '';
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/**
* @var \OCP\Lock\ILockingProvider
*/
private $lockingProvider;
private $lockingEnabled;
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private $updaterEnabled = true;
/**
* @param string $root
* @throws \Exception If $root contains an invalid path
*/
public function __construct($root = '') {
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if (is_null($root)) {
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throw new \InvalidArgumentException('Root can\'t be null');
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}
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if (!Filesystem::isValidPath($root)) {
throw new \Exception();
}
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$this->fakeRoot = $root;
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$this->lockingProvider = \OC::$server->getLockingProvider();
$this->lockingEnabled = !($this->lockingProvider instanceof \OC\Lock\NoopLockingProvider);
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}
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public function getAbsolutePath($path = '/') {
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if ($path === null) {
return null;
}
$this->assertPathLength($path);
if ($path === '') {
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$path = '/';
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}
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if ($path[0] !== '/') {
$path = '/' . $path;
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}
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return $this->fakeRoot . $path;
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}
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/**
* change the root to a fake root
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*
* @param string $fakeRoot
* @return boolean|null
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*/
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public function chroot($fakeRoot) {
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if (!$fakeRoot == '') {
if ($fakeRoot[0] !== '/') {
$fakeRoot = '/' . $fakeRoot;
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}
}
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$this->fakeRoot = $fakeRoot;
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}
/**
* get the fake root
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*
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* @return string
*/
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public function getRoot() {
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return $this->fakeRoot;
}
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/**
* get path relative to the root of the view
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*
* @param string $path
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* @return string
*/
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public function getRelativePath($path) {
$this->assertPathLength($path);
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if ($this->fakeRoot == '') {
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return $path;
}
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if (rtrim($path, '/') === rtrim($this->fakeRoot, '/')) {
return '/';
}
// missing slashes can cause wrong matches!
$root = rtrim($this->fakeRoot, '/') . '/';
if (strpos($path, $root) !== 0) {
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return null;
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} else {
$path = substr($path, strlen($this->fakeRoot));
if (strlen($path) === 0) {
return '/';
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} else {
return $path;
}
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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
* returned mountpoint is relative to the absolute root of the filesystem
* and does not take the chroot into account )
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*
* @param string $path
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* @return string
*/
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public function getMountPoint($path) {
return Filesystem::getMountPoint($this->getAbsolutePath($path));
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}
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/**
* get the mountpoint of the storage object for a path
* ( note: because a storage is not always mounted inside the fakeroot, the
* returned mountpoint is relative to the absolute root of the filesystem
* and does not take the chroot into account )
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*
* @param string $path
* @return \OCP\Files\Mount\IMountPoint
*/
public function getMount($path) {
return Filesystem::getMountManager()->find($this->getAbsolutePath($path));
}
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/**
* resolve a path to a storage and internal path
*
* @param string $path
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* @return array an array consisting of the storage and the internal path
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*/
public function resolvePath($path) {
$a = $this->getAbsolutePath($path);
$p = Filesystem::normalizePath($a);
return Filesystem::resolvePath($p);
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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
* outside the filestorage and for some purposes a local file is needed
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*
* @param string $path
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* @return string
*/
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public function getLocalFile($path) {
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$parent = substr($path, 0, strrpos($path, '/'));
$path = $this->getAbsolutePath($path);
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list($storage, $internalPath) = Filesystem::resolvePath($path);
if (Filesystem::isValidPath($parent) and $storage) {
return $storage->getLocalFile($internalPath);
} else {
return null;
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}
}
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/**
* @param string $path
* @return string
*/
public function getLocalFolder($path) {
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$parent = substr($path, 0, strrpos($path, '/'));
$path = $this->getAbsolutePath($path);
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list($storage, $internalPath) = Filesystem::resolvePath($path);
if (Filesystem::isValidPath($parent) and $storage) {
return $storage->getLocalFolder($internalPath);
} else {
return null;
}
}
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/**
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* the following functions operate with arguments and return values identical
* to those of their PHP built-in equivalents. Mostly they are merely wrappers
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* for \OC\Files\Storage\Storage via basicOperation().
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*/
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public function mkdir($path) {
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return $this->basicOperation('mkdir', $path, array('create', 'write'));
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}
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/**
* remove mount point
*
* @param \OC\Files\Mount\MoveableMount $mount
* @param string $path relative to data/
* @return boolean
*/
protected function removeMount($mount, $path) {
if ($mount instanceof MoveableMount) {
// cut of /user/files to get the relative path to data/user/files
$pathParts = explode('/', $path, 4);
$relPath = '/' . $pathParts[3];
\OC_Hook::emit(
Filesystem::CLASSNAME, "umount",
array(Filesystem::signal_param_path => $relPath)
);
$result = $mount->removeMount();
if ($result) {
\OC_Hook::emit(
Filesystem::CLASSNAME, "post_umount",
array(Filesystem::signal_param_path => $relPath)
);
}
return $result;
} else {
// do not allow deleting the storage's root / the mount point
// because for some storages it might delete the whole contents
// but isn't supposed to work that way
return false;
}
}
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public function disableCacheUpdate() {
$this->updaterEnabled = false;
}
public function enableCacheUpdate() {
$this->updaterEnabled = true;
}
protected function writeUpdate(Storage $storage, $internalPath, $time = null) {
if ($this->updaterEnabled) {
if (is_null($time)) {
$time = time();
}
$storage->getUpdater()->update($internalPath, $time);
}
}
protected function removeUpdate(Storage $storage, $internalPath) {
if ($this->updaterEnabled) {
$storage->getUpdater()->remove($internalPath);
}
}
protected function renameUpdate(Storage $sourceStorage, Storage $targetStorage, $sourceInternalPath, $targetInternalPath) {
if ($this->updaterEnabled) {
$targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
}
}
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/**
* @param string $path
* @return bool|mixed
*/
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public function rmdir($path) {
$absolutePath = $this->getAbsolutePath($path);
$mount = Filesystem::getMountManager()->find($absolutePath);
if ($mount->getInternalPath($absolutePath) === '') {
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return $this->removeMount($mount, $absolutePath);
}
if ($this->is_dir($path)) {
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return $this->basicOperation('rmdir', $path, array('delete'));
} else {
return false;
}
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}
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/**
* @param string $path
* @return resource
*/
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public function opendir($path) {
return $this->basicOperation('opendir', $path, array('read'));
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}
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/**
* @param $handle
* @return mixed
*/
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public function readdir($handle) {
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$fsLocal = new Storage\Local(array('datadir' => '/'));
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return $fsLocal->readdir($handle);
}
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/**
* @param string $path
* @return bool|mixed
*/
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public function is_dir($path) {
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if ($path == '/') {
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return true;
}
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return $this->basicOperation('is_dir', $path);
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}
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/**
* @param string $path
* @return bool|mixed
*/
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public function is_file($path) {
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if ($path == '/') {
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return false;
}
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return $this->basicOperation('is_file', $path);
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}
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/**
* @param string $path
* @return mixed
*/
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public function stat($path) {
return $this->basicOperation('stat', $path);
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}
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/**
* @param string $path
* @return mixed
*/
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public function filetype($path) {
return $this->basicOperation('filetype', $path);
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}
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/**
* @param string $path
* @return mixed
*/
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public function filesize($path) {
return $this->basicOperation('filesize', $path);
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}
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/**
* @param string $path
* @return bool|mixed
* @throws \OCP\Files\InvalidPathException
*/
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public function readfile($path) {
$this->assertPathLength($path);
@ob_end_clean();
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$handle = $this->fopen($path, 'rb');
if ($handle) {
$chunkSize = 8192; // 8 kB chunks
while (!feof($handle)) {
echo fread($handle, $chunkSize);
flush();
}
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$size = $this->filesize($path);
return $size;
}
return false;
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}
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/**
* @param string $path
* @return mixed
*/
public function isCreatable($path) {
return $this->basicOperation('isCreatable', $path);
}
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/**
* @param string $path
* @return mixed
*/
public function isReadable($path) {
return $this->basicOperation('isReadable', $path);
}
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/**
* @param string $path
* @return mixed
*/
public function isUpdatable($path) {
return $this->basicOperation('isUpdatable', $path);
}
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/**
* @param string $path
* @return bool|mixed
*/
public function isDeletable($path) {
$absolutePath = $this->getAbsolutePath($path);
$mount = Filesystem::getMountManager()->find($absolutePath);
if ($mount->getInternalPath($absolutePath) === '') {
return $mount instanceof MoveableMount;
}
return $this->basicOperation('isDeletable', $path);
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}
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/**
* @param string $path
* @return mixed
*/
public function isSharable($path) {
return $this->basicOperation('isSharable', $path);
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}
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/**
* @param string $path
* @return bool|mixed
*/
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public function file_exists($path) {
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if ($path == '/') {
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return true;
}
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return $this->basicOperation('file_exists', $path);
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}
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/**
* @param string $path
* @return mixed
*/
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public function filemtime($path) {
return $this->basicOperation('filemtime', $path);
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}
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/**
* @param string $path
* @param int|string $mtime
* @return bool
*/
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public function touch($path, $mtime = null) {
if (!is_null($mtime) and !is_numeric($mtime)) {
$mtime = strtotime($mtime);
}
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$hooks = array('touch');
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if (!$this->file_exists($path)) {
$hooks[] = 'create';
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$hooks[] = 'write';
}
$result = $this->basicOperation('touch', $path, $hooks, $mtime);
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if (!$result) {
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// If create file fails because of permissions on external storage like SMB folders,
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// check file exists and return false if not.
if (!$this->file_exists($path)) {
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return false;
}
if (is_null($mtime)) {
$mtime = time();
}
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//if native touch fails, we emulate it by changing the mtime in the cache
$this->putFileInfo($path, array('mtime' => $mtime));
}
return true;
}
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/**
* @param string $path
* @return mixed
*/
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public function file_get_contents($path) {
return $this->basicOperation('file_get_contents', $path, array('read'));
}
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/**
* @param bool $exists
* @param string $path
* @param bool $run
*/
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protected function emit_file_hooks_pre($exists, $path, &$run) {
if (!$exists) {
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_create, array(
Filesystem::signal_param_path => $this->getHookPath($path),
Filesystem::signal_param_run => &$run,
));
} else {
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_update, array(
Filesystem::signal_param_path => $this->getHookPath($path),
Filesystem::signal_param_run => &$run,
));
}
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_write, array(
Filesystem::signal_param_path => $this->getHookPath($path),
Filesystem::signal_param_run => &$run,
));
}
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/**
* @param bool $exists
* @param string $path
*/
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protected function emit_file_hooks_post($exists, $path) {
if (!$exists) {
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_create, array(
Filesystem::signal_param_path => $this->getHookPath($path),
));
} else {
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_update, array(
Filesystem::signal_param_path => $this->getHookPath($path),
));
}
\OC_Hook::emit(Filesystem::CLASSNAME, Filesystem::signal_post_write, array(
Filesystem::signal_param_path => $this->getHookPath($path),
));
}
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/**
* @param string $path
* @param mixed $data
* @return bool|mixed
* @throws \Exception
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*/
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public function file_put_contents($path, $data) {
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if (is_resource($data)) { //not having to deal with streams in file_put_contents makes life easier
$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
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if (Filesystem::isValidPath($path)
and !Filesystem::isFileBlacklisted($path)
) {
$path = $this->getRelativePath($absolutePath);
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$this->lockFile($path, ILockingProvider::LOCK_SHARED);
$exists = $this->file_exists($path);
$run = true;
if ($this->shouldEmitHooks($path)) {
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$this->emit_file_hooks_pre($exists, $path, $run);
}
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if (!$run) {
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
return false;
}
$this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
/** @var \OC\Files\Storage\Storage $storage */
list($storage, $internalPath) = $this->resolvePath($path);
$target = $storage->fopen($internalPath, 'w');
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if ($target) {
list (, $result) = \OC_Helper::streamCopy($data, $target);
fclose($target);
fclose($data);
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$this->writeUpdate($storage, $internalPath);
$this->changeLock($path, ILockingProvider::LOCK_SHARED);
if ($this->shouldEmitHooks($path) && $result !== false) {
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$this->emit_file_hooks_post($exists, $path);
}
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
return $result;
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} else {
$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
return false;
}
} else {
return false;
}
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} else {
$hooks = ($this->file_exists($path)) ? array('update', 'write') : array('create', 'write');
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return $this->basicOperation('file_put_contents', $path, $hooks, $data);
}
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}
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2015-02-18 18:08:30 +03:00
/**
* @param string $path
* @return bool|mixed
*/
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public function unlink($path) {
if ($path === '' || $path === '/') {
// do not allow deleting the root
return false;
}
$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
$mount = Filesystem::getMountManager()->find($absolutePath . $postFix);
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if ($mount and $mount->getInternalPath($absolutePath) === '') {
return $this->removeMount($mount, $absolutePath);
}
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return $this->basicOperation('unlink', $path, array('delete'));
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}
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/**
* @param string $directory
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* @return bool|mixed
*/
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public function deleteAll($directory) {
return $this->rmdir($directory);
}
2012-10-10 13:54:44 +04:00
2015-01-13 16:51:37 +03:00
/**
* Rename/move a file or folder from the source path to target path.
*
* @param string $path1 source path
* @param string $path2 target path
*
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* @return bool|mixed
*/
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public function rename($path1, $path2) {
$absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($path1));
$absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($path2));
$result = false;
if (
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Filesystem::isValidPath($path2)
and Filesystem::isValidPath($path1)
and !Filesystem::isFileBlacklisted($path2)
) {
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$path1 = $this->getRelativePath($absolutePath1);
$path2 = $this->getRelativePath($absolutePath2);
$exists = $this->file_exists($path2);
2012-08-29 10:38:33 +04:00
2012-10-10 13:54:44 +04:00
if ($path1 == null or $path2 == null) {
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return false;
}
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$this->lockFile($path1, ILockingProvider::LOCK_SHARED, true);
try {
$this->lockFile($path2, ILockingProvider::LOCK_SHARED, true);
} catch (LockedException $e) {
$this->unlockFile($path1, ILockingProvider::LOCK_SHARED);
throw $e;
}
2015-05-29 17:35:49 +03:00
2012-10-10 13:54:44 +04:00
$run = true;
if ($this->shouldEmitHooks($path1) && (Cache\Scanner::isPartialFile($path1) && !Cache\Scanner::isPartialFile($path2))) {
// if it was a rename from a part file to a regular file it was a write and not a rename operation
2014-04-28 19:45:03 +04:00
$this->emit_file_hooks_pre($exists, $path2, $run);
} elseif ($this->shouldEmitHooks($path1)) {
\OC_Hook::emit(
Filesystem::CLASSNAME, Filesystem::signal_rename,
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array(
Filesystem::signal_param_oldpath => $this->getHookPath($path1),
Filesystem::signal_param_newpath => $this->getHookPath($path2),
Filesystem::signal_param_run => &$run
2012-10-10 13:54:44 +04:00
)
);
}
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if ($run) {
$this->verifyPath(dirname($path2), basename($path2));
$manager = Filesystem::getMountManager();
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$mount1 = $this->getMount($path1);
$mount2 = $this->getMount($path2);
$storage1 = $mount1->getStorage();
$storage2 = $mount2->getStorage();
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$internalPath1 = $mount1->getInternalPath($absolutePath1);
$internalPath2 = $mount2->getInternalPath($absolutePath2);
$this->changeLock($path1, ILockingProvider::LOCK_EXCLUSIVE, true);
$this->changeLock($path2, ILockingProvider::LOCK_EXCLUSIVE, true);
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if ($internalPath1 === '' and $mount1 instanceof MoveableMount) {
if ($this->isTargetAllowed($absolutePath2)) {
/**
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* @var \OC\Files\Mount\MountPoint | \OC\Files\Mount\MoveableMount $mount1
*/
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$sourceMountPoint = $mount1->getMountPoint();
$result = $mount1->moveMount($absolutePath2);
$manager->moveMount($sourceMountPoint, $mount1->getMountPoint());
} else {
$result = false;
}
// moving a file/folder within the same mount point
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} elseif ($storage1 == $storage2) {
if ($storage1) {
$result = $storage1->rename($internalPath1, $internalPath2);
} else {
$result = false;
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}
// moving a file/folder between storages (from $storage1 to $storage2)
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} else {
$result = $storage2->moveFromStorage($storage1, $internalPath1, $internalPath2);
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}
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if ((Cache\Scanner::isPartialFile($path1) && !Cache\Scanner::isPartialFile($path2)) && $result !== false) {
// if it was a rename from a part file to a regular file it was a write and not a rename operation
2015-11-25 15:53:31 +03:00
$this->writeUpdate($storage2, $internalPath2);
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} else if ($result) {
if ($internalPath1 !== '') { // dont do a cache update for moved mounts
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$this->renameUpdate($storage1, $storage2, $internalPath1, $internalPath2);
}
}
$this->changeLock($path1, ILockingProvider::LOCK_SHARED, true);
$this->changeLock($path2, ILockingProvider::LOCK_SHARED, true);
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if ((Cache\Scanner::isPartialFile($path1) && !Cache\Scanner::isPartialFile($path2)) && $result !== false) {
if ($this->shouldEmitHooks()) {
$this->emit_file_hooks_post($exists, $path2);
}
} elseif ($result) {
if ($this->shouldEmitHooks($path1) and $this->shouldEmitHooks($path2)) {
\OC_Hook::emit(
Filesystem::CLASSNAME,
Filesystem::signal_post_rename,
array(
Filesystem::signal_param_oldpath => $this->getHookPath($path1),
Filesystem::signal_param_newpath => $this->getHookPath($path2)
)
);
}
}
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}
$this->unlockFile($path1, ILockingProvider::LOCK_SHARED, true);
$this->unlockFile($path2, ILockingProvider::LOCK_SHARED, true);
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}
return $result;
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}
2012-10-10 13:54:44 +04:00
2015-02-18 18:08:30 +03:00
/**
* Copy a file/folder from the source path to target path
*
* @param string $path1 source path
* @param string $path2 target path
* @param bool $preserveMtime whether to preserve mtime on the copy
*
2015-02-18 18:08:30 +03:00
* @return bool|mixed
*/
public function copy($path1, $path2, $preserveMtime = false) {
$absolutePath1 = Filesystem::normalizePath($this->getAbsolutePath($path1));
$absolutePath2 = Filesystem::normalizePath($this->getAbsolutePath($path2));
$result = false;
if (
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Filesystem::isValidPath($path2)
and Filesystem::isValidPath($path1)
and !Filesystem::isFileBlacklisted($path2)
) {
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$path1 = $this->getRelativePath($absolutePath1);
$path2 = $this->getRelativePath($absolutePath2);
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2012-10-10 13:54:44 +04:00
if ($path1 == null or $path2 == null) {
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return false;
}
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$run = true;
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$this->lockFile($path2, ILockingProvider::LOCK_SHARED);
$this->lockFile($path1, ILockingProvider::LOCK_SHARED);
$lockTypePath1 = ILockingProvider::LOCK_SHARED;
$lockTypePath2 = ILockingProvider::LOCK_SHARED;
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try {
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$exists = $this->file_exists($path2);
if ($this->shouldEmitHooks()) {
\OC_Hook::emit(
Filesystem::CLASSNAME,
Filesystem::signal_copy,
array(
Filesystem::signal_param_oldpath => $this->getHookPath($path1),
Filesystem::signal_param_newpath => $this->getHookPath($path2),
Filesystem::signal_param_run => &$run
)
);
$this->emit_file_hooks_pre($exists, $path2, $run);
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}
if ($run) {
$mount1 = $this->getMount($path1);
$mount2 = $this->getMount($path2);
$storage1 = $mount1->getStorage();
$internalPath1 = $mount1->getInternalPath($absolutePath1);
$storage2 = $mount2->getStorage();
$internalPath2 = $mount2->getInternalPath($absolutePath2);
$this->changeLock($path2, ILockingProvider::LOCK_EXCLUSIVE);
$lockTypePath2 = ILockingProvider::LOCK_EXCLUSIVE;
if ($mount1->getMountPoint() == $mount2->getMountPoint()) {
if ($storage1) {
$result = $storage1->copy($internalPath1, $internalPath2);
} else {
$result = false;
}
} else {
$result = $storage2->copyFromStorage($storage1, $internalPath1, $internalPath2);
}
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$this->writeUpdate($storage2, $internalPath2);
$this->changeLock($path2, ILockingProvider::LOCK_SHARED);
$lockTypePath2 = ILockingProvider::LOCK_SHARED;
if ($this->shouldEmitHooks() && $result !== false) {
\OC_Hook::emit(
Filesystem::CLASSNAME,
Filesystem::signal_post_copy,
array(
Filesystem::signal_param_oldpath => $this->getHookPath($path1),
Filesystem::signal_param_newpath => $this->getHookPath($path2)
)
);
$this->emit_file_hooks_post($exists, $path2);
}
}
} catch (\Exception $e) {
$this->unlockFile($path2, $lockTypePath2);
$this->unlockFile($path1, $lockTypePath1);
throw $e;
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}
$this->unlockFile($path2, $lockTypePath2);
$this->unlockFile($path1, $lockTypePath1);
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}
return $result;
2012-01-20 03:40:52 +04:00
}
2012-10-10 13:54:44 +04:00
2014-05-13 02:27:36 +04:00
/**
* @param string $path
* @param string $mode
* @return resource
*/
2012-07-21 23:44:10 +04:00
public function fopen($path, $mode) {
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$hooks = array();
switch ($mode) {
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case 'r':
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case 'rb':
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$hooks[] = 'read';
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break;
case 'r+':
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case 'rb+':
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case 'w+':
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case 'wb+':
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case 'x+':
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case 'xb+':
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case 'a+':
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case 'ab+':
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$hooks[] = 'read';
$hooks[] = 'write';
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break;
case 'w':
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case 'wb':
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case 'x':
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case 'xb':
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case 'a':
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case 'ab':
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$hooks[] = 'write';
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break;
default:
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\OCP\Util::writeLog('core', 'invalid mode (' . $mode . ') for ' . $path, \OCP\Util::ERROR);
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}
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return $this->basicOperation('fopen', $path, $hooks, $mode);
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}
2012-10-10 13:54:44 +04:00
2015-02-18 18:08:30 +03:00
/**
* @param string $path
* @return bool|string
* @throws \OCP\Files\InvalidPathException
*/
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public function toTmpFile($path) {
$this->assertPathLength($path);
if (Filesystem::isValidPath($path)) {
2012-07-21 23:44:10 +04:00
$source = $this->fopen($path, 'r');
2012-10-10 13:54:44 +04:00
if ($source) {
$extension = pathinfo($path, PATHINFO_EXTENSION);
$tmpFile = \OC_Helper::tmpFile($extension);
2012-07-21 23:44:10 +04:00
file_put_contents($tmpFile, $source);
return $tmpFile;
} else {
return false;
}
} else {
return false;
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}
}
2012-10-10 13:54:44 +04:00
2015-02-18 18:08:30 +03:00
/**
* @param string $tmpFile
* @param string $path
* @return bool|mixed
* @throws \OCP\Files\InvalidPathException
*/
2012-07-21 23:44:10 +04:00
public function fromTmpFile($tmpFile, $path) {
$this->assertPathLength($path);
if (Filesystem::isValidPath($path)) {
// Get directory that the file is going into
$filePath = dirname($path);
// Create the directories if any
if (!$this->file_exists($filePath)) {
$this->mkdir($filePath);
}
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$source = fopen($tmpFile, 'r');
if ($source) {
2014-12-08 17:25:21 +03:00
$result = $this->file_put_contents($path, $source);
// $this->file_put_contents() might have already closed
// the resource, so we check it, before trying to close it
// to avoid messages in the error log.
if (is_resource($source)) {
fclose($source);
}
unlink($tmpFile);
2014-12-08 17:25:21 +03:00
return $result;
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} else {
return false;
2012-01-20 03:40:52 +04:00
}
2012-07-21 23:44:10 +04:00
} else {
return false;
2012-01-20 03:40:52 +04:00
}
}
2015-02-18 18:08:30 +03:00
/**
* @param string $path
* @return mixed
* @throws \OCP\Files\InvalidPathException
*/
2012-07-21 23:44:10 +04:00
public function getMimeType($path) {
$this->assertPathLength($path);
2012-07-21 23:44:10 +04:00
return $this->basicOperation('getMimeType', $path);
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}
2012-10-10 13:54:44 +04:00
2015-02-18 18:08:30 +03:00
/**
* @param string $type
* @param string $path
* @param bool $raw
* @return bool|null|string
*/
public function hash($type, $path, $raw = false) {
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$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
2015-03-30 23:45:58 +03:00
if (Filesystem::isValidPath($path)) {
$path = $this->getRelativePath($absolutePath);
if ($path == null) {
return false;
}
if ($this->shouldEmitHooks($path)) {
\OC_Hook::emit(
Filesystem::CLASSNAME,
Filesystem::signal_read,
array(Filesystem::signal_param_path => $this->getHookPath($path))
);
}
list($storage, $internalPath) = Filesystem::resolvePath($absolutePath . $postFix);
if ($storage) {
$result = $storage->hash($type, $internalPath, $raw);
return $result;
}
}
return null;
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}
2015-02-18 18:08:30 +03:00
/**
* @param string $path
* @return mixed
* @throws \OCP\Files\InvalidPathException
*/
2012-10-10 13:54:44 +04:00
public function free_space($path = '/') {
$this->assertPathLength($path);
2012-07-21 23:44:10 +04:00
return $this->basicOperation('free_space', $path);
2012-01-20 03:40:52 +04:00
}
/**
* abstraction layer for basic filesystem functions: wrapper for \OC\Files\Storage\Storage
*
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* @param string $operation
* @param string $path
* @param array $hooks (optional)
* @param mixed $extraParam (optional)
2012-01-20 03:40:52 +04:00
* @return mixed
* @throws \Exception
2012-07-21 23:44:10 +04:00
*
* This method takes requests for basic filesystem functions (e.g. reading & writing
* files), processes hooks and proxies, sanitises paths, and finally passes them on to
2012-09-07 20:30:48 +04:00
* \OC\Files\Storage\Storage for delegation to a storage backend for execution
2012-01-20 03:40:52 +04:00
*/
private function basicOperation($operation, $path, $hooks = [], $extraParam = null) {
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$postFix = (substr($path, -1, 1) === '/') ? '/' : '';
$absolutePath = Filesystem::normalizePath($this->getAbsolutePath($path));
2015-03-30 23:45:58 +03:00
if (Filesystem::isValidPath($path)
and !Filesystem::isFileBlacklisted($path)
) {
2012-07-21 23:44:10 +04:00
$path = $this->getRelativePath($absolutePath);
2012-10-10 13:54:44 +04:00
if ($path == null) {
2012-06-09 19:33:57 +04:00
return false;
}
2015-06-16 15:37:15 +03:00
if (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks)) {
2015-05-29 17:35:49 +03:00
// always a shared lock during pre-hooks so the hook can read the file
$this->lockFile($path, ILockingProvider::LOCK_SHARED);
}
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$run = $this->runHooks($hooks, $path);
2015-11-25 15:53:31 +03:00
/** @var \OC\Files\Storage\Storage $storage */
list($storage, $internalPath) = Filesystem::resolvePath($absolutePath . $postFix);
if ($run and $storage) {
2015-05-05 14:48:49 +03:00
if (in_array('write', $hooks) || in_array('delete', $hooks)) {
2015-05-29 17:35:49 +03:00
$this->changeLock($path, ILockingProvider::LOCK_EXCLUSIVE);
2015-05-05 14:48:49 +03:00
}
try {
if (!is_null($extraParam)) {
$result = $storage->$operation($internalPath, $extraParam);
} else {
$result = $storage->$operation($internalPath);
}
} catch (\Exception $e) {
if (in_array('write', $hooks) || in_array('delete', $hooks)) {
2015-05-13 14:37:18 +03:00
$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
2015-05-13 14:54:15 +03:00
} else if (in_array('read', $hooks)) {
2015-05-13 14:37:18 +03:00
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
2015-05-05 14:48:49 +03:00
}
throw $e;
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}
2014-08-05 17:12:20 +04:00
if (in_array('delete', $hooks) and $result) {
2015-11-25 15:53:31 +03:00
$this->removeUpdate($storage, $internalPath);
2014-08-05 17:12:20 +04:00
}
2015-02-02 19:35:22 +03:00
if (in_array('write', $hooks) and $operation !== 'fopen') {
2015-11-25 15:53:31 +03:00
$this->writeUpdate($storage, $internalPath);
2014-08-05 17:12:20 +04:00
}
if (in_array('touch', $hooks)) {
2015-11-25 15:53:31 +03:00
$this->writeUpdate($storage, $internalPath, $extraParam);
2014-08-05 17:12:20 +04:00
}
if ((in_array('write', $hooks) || in_array('delete', $hooks)) && ($operation !== 'fopen' || $result === false)) {
$this->changeLock($path, ILockingProvider::LOCK_SHARED);
}
$unlockLater = false;
if ($this->lockingEnabled && $operation === 'fopen' && is_resource($result)) {
$unlockLater = true;
2015-05-05 14:48:49 +03:00
$result = CallbackWrapper::wrap($result, null, null, function () use ($hooks, $path) {
if (in_array('write', $hooks)) {
$this->unlockFile($path, ILockingProvider::LOCK_EXCLUSIVE);
2015-05-13 14:54:15 +03:00
} else if (in_array('read', $hooks)) {
2015-05-05 14:48:49 +03:00
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
}
});
}
if ($this->shouldEmitHooks($path) && $result !== false) {
2012-10-10 13:54:44 +04:00
if ($operation != 'fopen') { //no post hooks for fopen, the file stream is still open
$this->runHooks($hooks, $path, true);
2012-01-20 03:40:52 +04:00
}
}
if (!$unlockLater
&& (in_array('write', $hooks) || in_array('delete', $hooks) || in_array('read', $hooks))
) {
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
}
2012-01-20 03:40:52 +04:00
return $result;
2015-05-29 17:35:49 +03:00
} else {
$this->unlockFile($path, ILockingProvider::LOCK_SHARED);
2012-01-20 03:40:52 +04:00
}
}
return null;
}
/**
* get the path relative to the default root for hook usage
*
* @param string $path
* @return string
*/
private function getHookPath($path) {
if (!Filesystem::getView()) {
return $path;
}
return Filesystem::getView()->getRelativePath($this->getAbsolutePath($path));
}
private function shouldEmitHooks($path = '') {
if ($path && Cache\Scanner::isPartialFile($path)) {
return false;
}
if (!Filesystem::$loaded) {
return false;
}
$defaultRoot = Filesystem::getRoot();
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if ($defaultRoot === null) {
return false;
}
if ($this->fakeRoot === $defaultRoot) {
return true;
}
$fullPath = $this->getAbsolutePath($path);
if ($fullPath === $defaultRoot) {
return true;
}
return (strlen($fullPath) > strlen($defaultRoot)) && (substr($fullPath, 0, strlen($defaultRoot) + 1) === $defaultRoot . '/');
}
/**
* @param string[] $hooks
* @param string $path
* @param bool $post
* @return bool
*/
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private function runHooks($hooks, $path, $post = false) {
$relativePath = $path;
$path = $this->getHookPath($path);
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$prefix = ($post) ? 'post_' : '';
$run = true;
if ($this->shouldEmitHooks($relativePath)) {
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foreach ($hooks as $hook) {
if ($hook != 'read') {
\OC_Hook::emit(
Filesystem::CLASSNAME,
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$prefix . $hook,
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array(
Filesystem::signal_param_run => &$run,
Filesystem::signal_param_path => $path
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)
);
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} elseif (!$post) {
\OC_Hook::emit(
Filesystem::CLASSNAME,
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$prefix . $hook,
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array(
Filesystem::signal_param_path => $path
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)
);
}
}
}
return $run;
}
/**
* check if a file or folder has been updated since $time
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*
* @param string $path
* @param int $time
* @return bool
*/
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public function hasUpdated($path, $time) {
return $this->basicOperation('hasUpdated', $path, array(), $time);
}
/**
* @param string $ownerId
* @return \OC\User\User
*/
private function getUserObjectForOwner($ownerId) {
$owner = \OC::$server->getUserManager()->get($ownerId);
if ($owner instanceof IUser) {
return $owner;
} else {
return new User($ownerId, null);
}
}
/**
* Get file info from cache
*
* If the file is not in cached it will be scanned
* If the file has changed on storage the cache will be updated
*
* @param \OC\Files\Storage\Storage $storage
* @param string $internalPath
* @param string $relativePath
* @return array|bool
*/
private function getCacheEntry($storage, $internalPath, $relativePath) {
$cache = $storage->getCache($internalPath);
$data = $cache->get($internalPath);
$watcher = $storage->getWatcher($internalPath);
try {
// if the file is not in the cache or needs to be updated, trigger the scanner and reload the data
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if (!$data || $data['size'] === -1) {
$this->lockFile($relativePath, ILockingProvider::LOCK_SHARED);
if (!$storage->file_exists($internalPath)) {
$this->unlockFile($relativePath, ILockingProvider::LOCK_SHARED);
return false;
}
$scanner = $storage->getScanner($internalPath);
$scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
$data = $cache->get($internalPath);
$this->unlockFile($relativePath, ILockingProvider::LOCK_SHARED);
} else if (!Cache\Scanner::isPartialFile($internalPath) && $watcher->needsUpdate($internalPath, $data)) {
$this->lockFile($relativePath, ILockingProvider::LOCK_SHARED);
$watcher->update($internalPath, $data);
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$storage->getPropagator()->propagateChange($internalPath, time());
$data = $cache->get($internalPath);
$this->unlockFile($relativePath, ILockingProvider::LOCK_SHARED);
}
} catch (LockedException $e) {
// if the file is locked we just use the old cache info
}
return $data;
}
/**
* get the filesystem info
*
* @param string $path
* @param boolean|string $includeMountPoints true to add mountpoint sizes,
* 'ext' to add only ext storage mount point sizes. Defaults to true.
* defaults to true
* @return \OC\Files\FileInfo|bool False if file does not exist
*/
public function getFileInfo($path, $includeMountPoints = true) {
$this->assertPathLength($path);
if (!Filesystem::isValidPath($path)) {
return false;
}
if (Cache\Scanner::isPartialFile($path)) {
return $this->getPartFileInfo($path);
}
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$relativePath = $path;
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$path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
$mount = Filesystem::getMountManager()->find($path);
$storage = $mount->getStorage();
$internalPath = $mount->getInternalPath($path);
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if ($storage) {
$data = $this->getCacheEntry($storage, $internalPath, $relativePath);
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if (!is_array($data)) {
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return false;
}
if ($mount instanceof MoveableMount && $internalPath === '') {
$data['permissions'] |= \OCP\Constants::PERMISSION_DELETE;
}
$owner = $this->getUserObjectForOwner($storage->getOwner($internalPath));
$info = new FileInfo($path, $storage, $internalPath, $data, $mount, $owner);
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if ($data and isset($data['fileid'])) {
if ($includeMountPoints and $data['mimetype'] === 'httpd/unix-directory') {
//add the sizes of other mount points to the folder
$extOnly = ($includeMountPoints === 'ext');
$mounts = Filesystem::getMountManager()->findIn($path);
foreach ($mounts as $mount) {
$subStorage = $mount->getStorage();
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if ($subStorage) {
// exclude shared storage ?
if ($extOnly && $subStorage instanceof \OC\Files\Storage\Shared) {
continue;
}
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$subCache = $subStorage->getCache('');
$rootEntry = $subCache->get('');
$info->addSubEntry($rootEntry, $mount->getMountPoint());
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}
}
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}
}
return $info;
}
return false;
}
/**
* get the content of a directory
*
* @param string $directory path under datadirectory
* @param string $mimetype_filter limit returned content to this mimetype or mimepart
* @return FileInfo[]
*/
public function getDirectoryContent($directory, $mimetype_filter = '') {
$this->assertPathLength($directory);
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if (!Filesystem::isValidPath($directory)) {
return [];
}
$path = $this->getAbsolutePath($directory);
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$path = Filesystem::normalizePath($path);
$mount = $this->getMount($directory);
$storage = $mount->getStorage();
$internalPath = $mount->getInternalPath($path);
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if ($storage) {
$cache = $storage->getCache($internalPath);
$user = \OC_User::getUser();
$data = $this->getCacheEntry($storage, $internalPath, $directory);
if (!is_array($data) || !isset($data['fileid'])) {
return [];
}
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$folderId = $data['fileid'];
$contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
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/**
* @var \OC\Files\FileInfo[] $files
*/
$files = array_map(function (array $content) use ($path, $storage, $mount) {
if (\OCP\Util::isSharingDisabledForUser()) {
$content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
}
$owner = $this->getUserObjectForOwner($storage->getOwner($content['path']));
return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
}, $contents);
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//add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
$mounts = Filesystem::getMountManager()->findIn($path);
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$dirLength = strlen($path);
foreach ($mounts as $mount) {
$mountPoint = $mount->getMountPoint();
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$subStorage = $mount->getStorage();
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if ($subStorage) {
$subCache = $subStorage->getCache('');
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$rootEntry = $subCache->get('');
if (!$rootEntry) {
$subScanner = $subStorage->getScanner('');
try {
$subScanner->scanFile('');
} catch (\OCP\Files\StorageNotAvailableException $e) {
continue;
} catch (\OCP\Files\StorageInvalidException $e) {
continue;
} catch (\Exception $e) {
// sometimes when the storage is not available it can be any exception
\OCP\Util::writeLog(
'core',
'Exception while scanning storage "' . $subStorage->getId() . '": ' .
get_class($e) . ': ' . $e->getMessage(),
\OCP\Util::ERROR
);
continue;
}
$rootEntry = $subCache->get('');
}
if ($rootEntry) {
$relativePath = trim(substr($mountPoint, $dirLength), '/');
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if ($pos = strpos($relativePath, '/')) {
//mountpoint inside subfolder add size to the correct folder
$entryName = substr($relativePath, 0, $pos);
foreach ($files as &$entry) {
if ($entry->getName() === $entryName) {
$entry->addSubEntry($rootEntry, $mountPoint);
}
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}
} else { //mountpoint in this folder, add an entry for it
$rootEntry['name'] = $relativePath;
$rootEntry['type'] = $rootEntry['mimetype'] === 'httpd/unix-directory' ? 'dir' : 'file';
$permissions = $rootEntry['permissions'];
// do not allow renaming/deleting the mount point if they are not shared files/folders
// for shared files/folders we use the permissions given by the owner
if ($mount instanceof MoveableMount) {
$rootEntry['permissions'] = $permissions | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
} else {
$rootEntry['permissions'] = $permissions & (\OCP\Constants::PERMISSION_ALL - (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE));
}
//remove any existing entry with the same name
foreach ($files as $i => $file) {
if ($file['name'] === $rootEntry['name']) {
unset($files[$i]);
break;
}
}
$rootEntry['path'] = substr(Filesystem::normalizePath($path . '/' . $rootEntry['name']), strlen($user) + 2); // full path without /$user/
// if sharing was disabled for the user we remove the share permissions
if (\OCP\Util::isSharingDisabledForUser()) {
$rootEntry['permissions'] = $rootEntry['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
}
$owner = $this->getUserObjectForOwner($subStorage->getOwner(''));
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$files[] = new FileInfo($path . '/' . $rootEntry['name'], $subStorage, '', $rootEntry, $mount, $owner);
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}
}
}
}
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if ($mimetype_filter) {
$files = array_filter($files, function (FileInfo $file) use ($mimetype_filter) {
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if (strpos($mimetype_filter, '/')) {
if ($file->getMimetype() === $mimetype_filter) {
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$result[] = $file;
}
} else {
if ($file->getMimePart() === $mimetype_filter) {
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$result[] = $file;
}
}
});
}
return $files;
} else {
return [];
}
}
/**
* change file metadata
*
* @param string $path
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* @param array|\OCP\Files\FileInfo $data
* @return int
*
* returns the fileid of the updated file
*/
public function putFileInfo($path, $data) {
$this->assertPathLength($path);
if ($data instanceof FileInfo) {
$data = $data->getData();
}
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$path = Filesystem::normalizePath($this->fakeRoot . '/' . $path);
/**
* @var \OC\Files\Storage\Storage $storage
* @var string $internalPath
*/
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list($storage, $internalPath) = Filesystem::resolvePath($path);
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if ($storage) {
$cache = $storage->getCache($path);
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if (!$cache->inCache($internalPath)) {
$scanner = $storage->getScanner($internalPath);
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$scanner->scan($internalPath, Cache\Scanner::SCAN_SHALLOW);
}
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return $cache->put($internalPath, $data);
} else {
return -1;
}
}
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/**
* search for files with the name matching $query
*
* @param string $query
* @return FileInfo[]
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*/
public function search($query) {
return $this->searchCommon('search', array('%' . $query . '%'));
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}
/**
* search for files with the name matching $query
*
* @param string $query
* @return FileInfo[]
*/
public function searchRaw($query) {
return $this->searchCommon('search', array($query));
}
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/**
* search for files by mimetype
*
* @param string $mimetype
* @return FileInfo[]
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*/
public function searchByMime($mimetype) {
return $this->searchCommon('searchByMime', array($mimetype));
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}
/**
* search for files by tag
*
* @param string|int $tag name or tag id
* @param string $userId owner of the tags
* @return FileInfo[]
*/
public function searchByTag($tag, $userId) {
return $this->searchCommon('searchByTag', array($tag, $userId));
}
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/**
* @param string $method cache method
* @param array $args
* @return FileInfo[]
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*/
private function searchCommon($method, $args) {
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$files = array();
$rootLength = strlen($this->fakeRoot);
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$mount = $this->getMount('');
$mountPoint = $mount->getMountPoint();
$storage = $mount->getStorage();
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if ($storage) {
$cache = $storage->getCache('');
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$results = call_user_func_array(array($cache, $method), $args);
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foreach ($results as $result) {
if (substr($mountPoint . $result['path'], 0, $rootLength + 1) === $this->fakeRoot . '/') {
$internalPath = $result['path'];
$path = $mountPoint . $result['path'];
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$result['path'] = substr($mountPoint . $result['path'], $rootLength);
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$owner = \OC::$server->getUserManager()->get($storage->getOwner($internalPath));
$files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
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}
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}
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$mounts = Filesystem::getMountManager()->findIn($this->fakeRoot);
foreach ($mounts as $mount) {
$mountPoint = $mount->getMountPoint();
$storage = $mount->getStorage();
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if ($storage) {
$cache = $storage->getCache('');
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$relativeMountPoint = substr($mountPoint, $rootLength);
$results = call_user_func_array(array($cache, $method), $args);
if ($results) {
foreach ($results as $result) {
$internalPath = $result['path'];
$result['path'] = rtrim($relativeMountPoint . $result['path'], '/');
$path = rtrim($mountPoint . $internalPath, '/');
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$owner = \OC::$server->getUserManager()->get($storage->getOwner($internalPath));
$files[] = new FileInfo($path, $storage, $internalPath, $result, $mount, $owner);
}
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}
}
}
}
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return $files;
}
/**
* Get the owner for a file or folder
*
* @param string $path
* @return string
*/
public function getOwner($path) {
return $this->basicOperation('getOwner', $path);
}
/**
* get the ETag for a file or folder
*
* @param string $path
* @return string
*/
public function getETag($path) {
/**
* @var Storage\Storage $storage
* @var string $internalPath
*/
list($storage, $internalPath) = $this->resolvePath($path);
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if ($storage) {
return $storage->getETag($internalPath);
} else {
return null;
}
}
/**
* Get the path of a file by id, relative to the view
*
* Note that the resulting path is not guarantied to be unique for the id, multiple paths can point to the same file
*
* @param int $id
* @throws NotFoundException
* @return string
*/
public function getPath($id) {
$id = (int)$id;
$manager = Filesystem::getMountManager();
$mounts = $manager->findIn($this->fakeRoot);
$mounts[] = $manager->find($this->fakeRoot);
// reverse the array so we start with the storage this view is in
// which is the most likely to contain the file we're looking for
$mounts = array_reverse($mounts);
foreach ($mounts as $mount) {
/**
* @var \OC\Files\Mount\MountPoint $mount
*/
if ($mount->getStorage()) {
$cache = $mount->getStorage()->getCache();
$internalPath = $cache->getPathById($id);
if (is_string($internalPath)) {
$fullPath = $mount->getMountPoint() . $internalPath;
if (!is_null($path = $this->getRelativePath($fullPath))) {
return $path;
}
}
}
}
throw new NotFoundException(sprintf('File with id "%s" has not been found.', $id));
}
/**
* @param string $path
* @throws InvalidPathException
*/
private function assertPathLength($path) {
$maxLen = min(PHP_MAXPATHLEN, 4000);
// Check for the string length - performed using isset() instead of strlen()
// because isset() is about 5x-40x faster.
if (isset($path[$maxLen])) {
$pathLen = strlen($path);
throw new \OCP\Files\InvalidPathException("Path length($pathLen) exceeds max path length($maxLen): $path");
}
}
/**
* check if it is allowed to move a mount point to a given target.
* It is not allowed to move a mount point into a different mount point or
* into an already shared folder
*
* @param string $target path
* @return boolean
*/
private function isTargetAllowed($target) {
list($targetStorage, $targetInternalPath) = \OC\Files\Filesystem::resolvePath($target);
if (!$targetStorage->instanceOfStorage('\OCP\Files\IHomeStorage')) {
\OCP\Util::writeLog('files',
'It is not allowed to move one mount point into another one',
\OCP\Util::DEBUG);
return false;
}
// note: cannot use the view because the target is already locked
$fileId = (int)$targetStorage->getCache()->getId($targetInternalPath);
if ($fileId === -1) {
// target might not exist, need to check parent instead
$fileId = (int)$targetStorage->getCache()->getId(dirname($targetInternalPath));
}
// check if any of the parents were shared by the current owner (include collections)
$shares = \OCP\Share::getItemShared(
'folder',
$fileId,
\OCP\Share::FORMAT_NONE,
null,
true
);
if (count($shares) > 0) {
\OCP\Util::writeLog('files',
'It is not allowed to move one mount point into a shared folder',
\OCP\Util::DEBUG);
return false;
}
return true;
}
/**
* Get a fileinfo object for files that are ignored in the cache (part files)
*
* @param string $path
* @return \OCP\Files\FileInfo
*/
private function getPartFileInfo($path) {
$mount = $this->getMount($path);
$storage = $mount->getStorage();
$internalPath = $mount->getInternalPath($this->getAbsolutePath($path));
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$owner = \OC::$server->getUserManager()->get($storage->getOwner($internalPath));
return new FileInfo(
$this->getAbsolutePath($path),
$storage,
$internalPath,
[
'fileid' => null,
'mimetype' => $storage->getMimeType($internalPath),
'name' => basename($path),
'etag' => null,
'size' => $storage->filesize($internalPath),
'mtime' => $storage->filemtime($internalPath),
'encrypted' => false,
'permissions' => \OCP\Constants::PERMISSION_ALL
],
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$mount,
$owner
);
}
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/**
* @param string $path
* @param string $fileName
* @throws InvalidPathException
*/
public function verifyPath($path, $fileName) {
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$l10n = \OC::$server->getL10N('lib');
// verify empty and dot files
$trimmed = trim($fileName);
if ($trimmed === '') {
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throw new InvalidPathException($l10n->t('Empty filename is not allowed'));
}
if (\OC\Files\Filesystem::isIgnoredDir($trimmed)) {
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throw new InvalidPathException($l10n->t('Dot files are not allowed'));
}
// verify database - e.g. mysql only 3-byte chars
if (preg_match('%(?:
\xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
)%xs', $fileName)) {
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throw new InvalidPathException($l10n->t('4-byte characters are not supported in file names'));
}
try {
/** @type \OCP\Files\Storage $storage */
list($storage, $internalPath) = $this->resolvePath($path);
$storage->verifyPath($internalPath, $fileName);
} catch (ReservedWordException $ex) {
throw new InvalidPathException($l10n->t('File name is a reserved word'));
} catch (InvalidCharacterInPathException $ex) {
throw new InvalidPathException($l10n->t('File name contains at least one invalid character'));
} catch (FileNameTooLongException $ex) {
throw new InvalidPathException($l10n->t('File name is too long'));
}
}
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/**
* get all parent folders of $path
*
* @param string $path
* @return string[]
*/
private function getParents($path) {
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$path = trim($path, '/');
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if (!$path) {
return [];
}
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$parts = explode('/', $path);
// remove the single file
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array_pop($parts);
$result = array('/');
$resultPath = '';
foreach ($parts as $part) {
if ($part) {
$resultPath .= '/' . $part;
$result[] = $resultPath;
}
}
return $result;
}
/**
* Returns the mount point for which to lock
*
* @param string $absolutePath absolute path
* @param bool $useParentMount true to return parent mount instead of whatever
* is mounted directly on the given path, false otherwise
* @return \OC\Files\Mount\MountPoint mount point for which to apply locks
*/
private function getMountForLock($absolutePath, $useParentMount = false) {
$results = [];
$mount = Filesystem::getMountManager()->find($absolutePath);
if (!$mount) {
return $results;
}
if ($useParentMount) {
// find out if something is mounted directly on the path
$internalPath = $mount->getInternalPath($absolutePath);
if ($internalPath === '') {
// resolve the parent mount instead
$mount = Filesystem::getMountManager()->find(dirname($absolutePath));
}
}
return $mount;
}
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/**
* Lock the given path
*
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* @param string $path the path of the file to lock, relative to the view
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
*
* @return bool False if the path is excluded from locking, true otherwise
* @throws \OCP\Lock\LockedException if the path is already locked
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*/
private function lockPath($path, $type, $lockMountPoint = false) {
$absolutePath = $this->getAbsolutePath($path);
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$absolutePath = Filesystem::normalizePath($absolutePath);
if (!$this->shouldLockFile($absolutePath)) {
return false;
}
$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
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if ($mount) {
try {
$mount->getStorage()->acquireLock(
$mount->getInternalPath($absolutePath),
$type,
$this->lockingProvider
);
} catch (\OCP\Lock\LockedException $e) {
// rethrow with the a human-readable path
throw new \OCP\Lock\LockedException(
$this->getPathRelativeToFiles($absolutePath),
$e
);
}
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}
return true;
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}
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/**
* Change the lock type
*
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* @param string $path the path of the file to lock, relative to the view
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
*
* @return bool False if the path is excluded from locking, true otherwise
* @throws \OCP\Lock\LockedException if the path is already locked
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*/
public function changeLock($path, $type, $lockMountPoint = false) {
$path = Filesystem::normalizePath($path);
$absolutePath = $this->getAbsolutePath($path);
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$absolutePath = Filesystem::normalizePath($absolutePath);
if (!$this->shouldLockFile($absolutePath)) {
return false;
}
$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
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if ($mount) {
try {
$mount->getStorage()->changeLock(
$mount->getInternalPath($absolutePath),
$type,
$this->lockingProvider
);
} catch (\OCP\Lock\LockedException $e) {
// rethrow with the a human-readable path
throw new \OCP\Lock\LockedException(
$this->getPathRelativeToFiles($absolutePath),
$e
);
}
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}
return true;
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}
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/**
* Unlock the given path
*
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* @param string $path the path of the file to unlock, relative to the view
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
*
* @return bool False if the path is excluded from locking, true otherwise
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*/
private function unlockPath($path, $type, $lockMountPoint = false) {
$absolutePath = $this->getAbsolutePath($path);
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$absolutePath = Filesystem::normalizePath($absolutePath);
if (!$this->shouldLockFile($absolutePath)) {
return false;
}
$mount = $this->getMountForLock($absolutePath, $lockMountPoint);
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if ($mount) {
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$mount->getStorage()->releaseLock(
$mount->getInternalPath($absolutePath),
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$type,
$this->lockingProvider
);
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}
return true;
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}
/**
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* Lock a path and all its parents up to the root of the view
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*
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* @param string $path the path of the file to lock relative to the view
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
*
* @return bool False if the path is excluded from locking, true otherwise
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*/
public function lockFile($path, $type, $lockMountPoint = false) {
$absolutePath = $this->getAbsolutePath($path);
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$absolutePath = Filesystem::normalizePath($absolutePath);
if (!$this->shouldLockFile($absolutePath)) {
return false;
}
$this->lockPath($path, $type, $lockMountPoint);
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$parents = $this->getParents($path);
foreach ($parents as $parent) {
$this->lockPath($parent, ILockingProvider::LOCK_SHARED);
}
return true;
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}
/**
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* Unlock a path and all its parents up to the root of the view
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*
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* @param string $path the path of the file to lock relative to the view
* @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
* @param bool $lockMountPoint true to lock the mount point, false to lock the attached mount/storage
*
* @return bool False if the path is excluded from locking, true otherwise
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*/
public function unlockFile($path, $type, $lockMountPoint = false) {
$absolutePath = $this->getAbsolutePath($path);
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$absolutePath = Filesystem::normalizePath($absolutePath);
if (!$this->shouldLockFile($absolutePath)) {
return false;
}
$this->unlockPath($path, $type, $lockMountPoint);
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$parents = $this->getParents($path);
foreach ($parents as $parent) {
$this->unlockPath($parent, ILockingProvider::LOCK_SHARED);
}
return true;
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}
/**
* Only lock files in data/user/files/
*
* @param string $path Absolute path to the file/folder we try to (un)lock
* @return bool
*/
protected function shouldLockFile($path) {
$path = Filesystem::normalizePath($path);
$pathSegments = explode('/', $path);
if (isset($pathSegments[2])) {
// E.g.: /username/files/path-to-file
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return ($pathSegments[2] === 'files') && (count($pathSegments) > 3);
}
return true;
}
/**
* Shortens the given absolute path to be relative to
* "$user/files".
*
* @param string $absolutePath absolute path which is under "files"
*
* @return string path relative to "files" with trimmed slashes or null
* if the path was NOT relative to files
*
* @throws \InvalidArgumentException if the given path was not under "files"
* @since 8.1.0
*/
public function getPathRelativeToFiles($absolutePath) {
$path = Filesystem::normalizePath($absolutePath);
$parts = explode('/', trim($path, '/'), 3);
// "$user", "files", "path/to/dir"
if (!isset($parts[1]) || $parts[1] !== 'files') {
throw new \InvalidArgumentException('$absolutePath must be relative to "files"');
}
if (isset($parts[2])) {
return $parts[2];
}
return '';
}
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}