nextcloud/lib/private/Files/FileInfo.php

391 lines
8.5 KiB
PHP

<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author tbartenstein <tbartenstein@users.noreply.github.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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/>
*
*/
namespace OC\Files;
use OCP\Files\Cache\ICacheEntry;
use OCP\Files\Mount\IMountPoint;
use OCP\IUser;
class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
/**
* @var array $data
*/
private $data;
/**
* @var string $path
*/
private $path;
/**
* @var \OC\Files\Storage\Storage $storage
*/
private $storage;
/**
* @var string $internalPath
*/
private $internalPath;
/**
* @var \OCP\Files\Mount\IMountPoint
*/
private $mount;
/**
* @var IUser
*/
private $owner;
/**
* @var string[]
*/
private $childEtags = [];
/**
* @var IMountPoint[]
*/
private $subMounts = [];
private $subMountsUsed = false;
/**
* @param string|boolean $path
* @param Storage\Storage $storage
* @param string $internalPath
* @param array|ICacheEntry $data
* @param \OCP\Files\Mount\IMountPoint $mount
* @param \OCP\IUser|null $owner
*/
public function __construct($path, $storage, $internalPath, $data, $mount, $owner= null) {
$this->path = $path;
$this->storage = $storage;
$this->internalPath = $internalPath;
$this->data = $data;
$this->mount = $mount;
$this->owner = $owner;
}
public function offsetSet($offset, $value) {
$this->data[$offset] = $value;
}
public function offsetExists($offset) {
return isset($this->data[$offset]);
}
public function offsetUnset($offset) {
unset($this->data[$offset]);
}
public function offsetGet($offset) {
if ($offset === 'type') {
return $this->getType();
} else if ($offset === 'etag') {
return $this->getEtag();
} else if ($offset === 'size') {
return $this->getSize();
} else if ($offset === 'mtime') {
return $this->getMTime();
} elseif ($offset === 'permissions') {
return $this->getPermissions();
} elseif (isset($this->data[$offset])) {
return $this->data[$offset];
} else {
return null;
}
}
/**
* @return string
*/
public function getPath() {
return $this->path;
}
/**
* @return \OCP\Files\Storage
*/
public function getStorage() {
return $this->storage;
}
/**
* @return string
*/
public function getInternalPath() {
return $this->internalPath;
}
/**
* Get FileInfo ID or null in case of part file
*
* @return int|null
*/
public function getId() {
return isset($this->data['fileid']) ? (int) $this->data['fileid'] : null;
}
/**
* @return string
*/
public function getMimetype() {
return $this->data['mimetype'];
}
/**
* @return string
*/
public function getMimePart() {
return $this->data['mimepart'];
}
/**
* @return string
*/
public function getName() {
return basename($this->getPath());
}
/**
* @return string
*/
public function getEtag() {
$this->updateEntryfromSubMounts();
if (count($this->childEtags) > 0) {
$combinedEtag = $this->data['etag'] . '::' . implode('::', $this->childEtags);
return md5($combinedEtag);
} else {
return $this->data['etag'];
}
}
/**
* @return int
*/
public function getSize() {
$this->updateEntryfromSubMounts();
return isset($this->data['size']) ? 0 + $this->data['size'] : 0;
}
/**
* @return int
*/
public function getMTime() {
$this->updateEntryfromSubMounts();
return (int) $this->data['mtime'];
}
/**
* @return bool
*/
public function isEncrypted() {
return $this->data['encrypted'];
}
/**
* Return the currently version used for the HMAC in the encryption app
*
* @return int
*/
public function getEncryptedVersion() {
return isset($this->data['encryptedVersion']) ? (int) $this->data['encryptedVersion'] : 1;
}
/**
* @return int
*/
public function getPermissions() {
$perms = (int) $this->data['permissions'];
if (\OCP\Util::isSharingDisabledForUser() || ($this->isShared() && !\OC\Share\Share::isResharingAllowed())) {
$perms = $perms & ~\OCP\Constants::PERMISSION_SHARE;
}
return (int) $perms;
}
/**
* @return string \OCP\Files\FileInfo::TYPE_FILE|\OCP\Files\FileInfo::TYPE_FOLDER
*/
public function getType() {
if (!isset($this->data['type'])) {
$this->data['type'] = ($this->getMimetype() === 'httpd/unix-directory') ? self::TYPE_FOLDER : self::TYPE_FILE;
}
return $this->data['type'];
}
public function getData() {
return $this->data;
}
/**
* @param int $permissions
* @return bool
*/
protected function checkPermissions($permissions) {
return ($this->getPermissions() & $permissions) === $permissions;
}
/**
* @return bool
*/
public function isReadable() {
return $this->checkPermissions(\OCP\Constants::PERMISSION_READ);
}
/**
* @return bool
*/
public function isUpdateable() {
return $this->checkPermissions(\OCP\Constants::PERMISSION_UPDATE);
}
/**
* Check whether new files or folders can be created inside this folder
*
* @return bool
*/
public function isCreatable() {
return $this->checkPermissions(\OCP\Constants::PERMISSION_CREATE);
}
/**
* @return bool
*/
public function isDeletable() {
return $this->checkPermissions(\OCP\Constants::PERMISSION_DELETE);
}
/**
* @return bool
*/
public function isShareable() {
return $this->checkPermissions(\OCP\Constants::PERMISSION_SHARE);
}
/**
* Check if a file or folder is shared
*
* @return bool
*/
public function isShared() {
$sid = $this->getStorage()->getId();
if (!is_null($sid)) {
$sid = explode(':', $sid);
return ($sid[0] === 'shared');
}
return false;
}
public function isMounted() {
$storage = $this->getStorage();
if ($storage->instanceOfStorage('\OCP\Files\IHomeStorage')) {
return false;
}
$sid = $storage->getId();
if (!is_null($sid)) {
$sid = explode(':', $sid);
return ($sid[0] !== 'home' and $sid[0] !== 'shared');
}
return false;
}
/**
* Get the mountpoint the file belongs to
*
* @return \OCP\Files\Mount\IMountPoint
*/
public function getMountPoint() {
return $this->mount;
}
/**
* Get the owner of the file
*
* @return \OCP\IUser
*/
public function getOwner() {
return $this->owner;
}
/**
* @param IMountPoint[] $mounts
*/
public function setSubMounts(array $mounts) {
$this->subMounts = $mounts;
}
private function updateEntryfromSubMounts() {
if ($this->subMountsUsed) {
return;
}
$this->subMountsUsed = true;
foreach ($this->subMounts as $mount) {
$subStorage = $mount->getStorage();
if ($subStorage) {
$subCache = $subStorage->getCache('');
$rootEntry = $subCache->get('');
$this->addSubEntry($rootEntry, $mount->getMountPoint());
}
}
}
/**
* Add a cache entry which is the child of this folder
*
* Sets the size, etag and size to for cross-storage childs
*
* @param array|ICacheEntry $data cache entry for the child
* @param string $entryPath full path of the child entry
*/
public function addSubEntry($data, $entryPath) {
$this->data['size'] += isset($data['size']) ? $data['size'] : 0;
if (isset($data['mtime'])) {
$this->data['mtime'] = max($this->data['mtime'], $data['mtime']);
}
if (isset($data['etag'])) {
// prefix the etag with the relative path of the subentry to propagate etag on mount moves
$relativeEntryPath = substr($entryPath, strlen($this->getPath()));
// attach the permissions to propagate etag on permision changes of submounts
$permissions = isset($data['permissions']) ? $data['permissions'] : 0;
$this->childEtags[] = $relativeEntryPath . '/' . $data['etag'] . $permissions;
}
}
/**
* @inheritdoc
*/
public function getChecksum() {
return $this->data['checksum'];
}
}