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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
*
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Files_Versions\Versions;
use OC\Files\View;
use OCA\Files_Sharing\SharedStorage;
use OCA\Files_Versions\Storage;
use OCP\Files\File;
use OCP\Files\FileInfo;
use OCP\Files\Folder;
use OCP\Files\IRootFolder;
use OCP\Files\NotFoundException;
use OCP\Files\Storage\IStorage;
use OCP\IUser;
use OCP\IUserManager;
class LegacyVersionsBackend implements IVersionBackend {
/** @var IRootFolder */
private $rootFolder;
/** @var IUserManager */
private $userManager;
public function __construct(IRootFolder $rootFolder, IUserManager $userManager) {
$this->rootFolder = $rootFolder;
$this->userManager = $userManager;
}
public function useBackendForStorage(IStorage $storage): bool {
return true;
}
public function getVersionsForFile(IUser $user, FileInfo $file): array {
$storage = $file->getStorage();
if ($storage->instanceOfStorage(SharedStorage::class)) {
$owner = $storage->getOwner('');
$user = $this->userManager->get($owner);
}
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
$nodes = $userFolder->getById($file->getId());
$file2 = array_pop($nodes);
$versions = Storage::getVersions($user->getUID(), $userFolder->getRelativePath($file2->getPath()));
return array_map(function (array $data) use ($file, $user) {
return new Version(
(int)$data['version'],
(int)$data['version'],
$data['name'],
(int)$data['size'],
$data['mimetype'],
$data['path'],
$file,
$this,
$user
);
}, $versions);
}
public function createVersion(IUser $user, FileInfo $file) {
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
$relativePath = $userFolder->getRelativePath($file->getPath());
$userView = new View('/' . $user->getUID());
// create all parent folders
Storage::createMissingDirectories($relativePath, $userView);
Storage::scheduleExpire($user->getUID(), $relativePath);
// store a new version of a file
$userView->copy('files/' . $relativePath, 'files_versions/' . $relativePath . '.v' . $file->getMtime());
// ensure the file is scanned
$userView->getFileInfo('files_versions/' . $relativePath . '.v' . $file->getMtime());
}
public function rollback(IVersion $version) {
return Storage::rollback($version->getVersionPath(), $version->getRevisionId(), $version->getUser());
}
private function getVersionFolder(IUser $user): Folder {
$userRoot = $this->rootFolder->getUserFolder($user->getUID())
->getParent();
try {
/** @var Folder $folder */
$folder = $userRoot->get('files_versions');
return $folder;
} catch (NotFoundException $e) {
return $userRoot->newFolder('files_versions');
}
}
public function read(IVersion $version) {
$versions = $this->getVersionFolder($version->getUser());
/** @var File $file */
$file = $versions->get($version->getVersionPath() . '.v' . $version->getRevisionId());
return $file->fopen('r');
}
public function getVersionFile(IUser $user, FileInfo $sourceFile, $revision): File {
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
$versionFolder = $this->getVersionFolder($user);
/** @var File $file */
$file = $versionFolder->get($userFolder->getRelativePath($sourceFile->getPath()) . '.v' . $revision);
return $file;
}
}
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