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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @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\Encryption;
use OC\Files\Filesystem;
use OC\Files\Mount;
use OC\Files\View;
/**
* update encrypted files, e.g. because a file was shared
*/
class Update {
/** @var \OC\Files\View */
protected $view;
/** @var \OC\Encryption\Util */
protected $util;
/** @var \OC\Files\Mount\Manager */
protected $mountManager;
/** @var \OC\Encryption\Manager */
protected $encryptionManager;
/** @var string */
protected $uid;
/** @var \OC\Encryption\File */
protected $file;
/**
*
* @param \OC\Files\View $view
* @param \OC\Encryption\Util $util
* @param \OC\Files\Mount\Manager $mountManager
* @param \OC\Encryption\Manager $encryptionManager
* @param \OC\Encryption\File $file
* @param string $uid
*/
public function __construct(
View $view,
Util $util,
Mount\Manager $mountManager,
Manager $encryptionManager,
File $file,
$uid
) {
$this->view = $view;
$this->util = $util;
$this->mountManager = $mountManager;
$this->encryptionManager = $encryptionManager;
$this->file = $file;
$this->uid = $uid;
}
/**
* hook after file was shared
*
* @param array $params
*/
public function postShared($params) {
if ($this->encryptionManager->isEnabled()) {
if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
$path = Filesystem::getPath($params['fileSource']);
list($owner, $ownerPath) = $this->getOwnerPath($path);
$absPath = '/' . $owner . '/files/' . $ownerPath;
$this->update($absPath);
}
}
}
/**
* hook after file was unshared
*
* @param array $params
*/
public function postUnshared($params) {
if ($this->encryptionManager->isEnabled()) {
if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
$path = Filesystem::getPath($params['fileSource']);
list($owner, $ownerPath) = $this->getOwnerPath($path);
$absPath = '/' . $owner . '/files/' . $ownerPath;
$this->update($absPath);
}
}
}
/**
* inform encryption module that a file was restored from the trash bin,
* e.g. to update the encryption keys
*
* @param array $params
*/
public function postRestore($params) {
if ($this->encryptionManager->isEnabled()) {
$path = Filesystem::normalizePath('/' . $this->uid . '/files/' . $params['filePath']);
$this->update($path);
}
}
/**
* inform encryption module that a file was renamed,
* e.g. to update the encryption keys
*
* @param array $params
*/
public function postRename($params) {
$source = $params['oldpath'];
$target = $params['newpath'];
if (
$this->encryptionManager->isEnabled() &&
dirname($source) !== dirname($target)
) {
list($owner, $ownerPath) = $this->getOwnerPath($target);
$absPath = '/' . $owner . '/files/' . $ownerPath;
$this->update($absPath);
}
}
/**
* get owner and path relative to data/<owner>/files
*
* @param string $path path to file for current user
* @return array ['owner' => $owner, 'path' => $path]
* @throw \InvalidArgumentException
*/
protected function getOwnerPath($path) {
$info = Filesystem::getFileInfo($path);
$owner = Filesystem::getOwner($path);
$view = new View('/' . $owner . '/files');
$path = $view->getPath($info->getId());
if ($path === null) {
throw new \InvalidArgumentException('No file found for ' . $info->getId());
}
return [$owner, $path];
}
/**
* notify encryption module about added/removed users from a file/folder
*
* @param string $path relative to data/
* @throws Exceptions\ModuleDoesNotExistsException
*/
public function update($path) {
$encryptionModule = $this->encryptionManager->getEncryptionModule();
// if the encryption module doesn't encrypt the files on a per-user basis
// we have nothing to do here.
if ($encryptionModule->needDetailedAccessList() === false) {
return;
}
// if a folder was shared, get a list of all (sub-)folders
if ($this->view->is_dir($path)) {
$allFiles = $this->util->getAllFiles($path);
} else {
$allFiles = [$path];
}
foreach ($allFiles as $file) {
$usersSharing = $this->file->getAccessList($file);
$encryptionModule->update($file, $this->uid, $usersSharing);
}
}
}
|
