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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Files_Sharing;
use OC\User\NoUserException;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\Files\Config\IUserMountCache;
use OCP\Files\IRootFolder;
use OCP\IDBConnection;
class OrphanHelper {
public function __construct(
private IDBConnection $connection,
private IRootFolder $rootFolder,
private IUserMountCache $userMountCache,
) {
}
public function isShareValid(string $owner, int $fileId): bool {
try {
$userFolder = $this->rootFolder->getUserFolder($owner);
} catch (NoUserException $e) {
return false;
}
$node = $userFolder->getFirstNodeById($fileId);
return $node !== null;
}
/**
* @param int[] $ids
* @return void
*/
public function deleteShares(array $ids): void {
$query = $this->connection->getQueryBuilder();
$query->delete('share')
->where($query->expr()->in('id', $query->createNamedParameter($ids, IQueryBuilder::PARAM_INT_ARRAY)));
$query->executeStatement();
}
public function fileExists(int $fileId): bool {
$query = $this->connection->getQueryBuilder();
$query->select('fileid')
->from('filecache')
->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)));
return $query->executeQuery()->fetchOne() !== false;
}
/**
* @return \Traversable<int, array{id: int, owner: string, fileid: int, target: string}>
*/
public function getAllShares() {
$query = $this->connection->getQueryBuilder();
$query->select('id', 'file_source', 'uid_owner', 'file_target')
->from('share')
->where($query->expr()->eq('item_type', $query->createNamedParameter('file')))
->orWhere($query->expr()->eq('item_type', $query->createNamedParameter('folder')));
$result = $query->executeQuery();
while ($row = $result->fetch()) {
yield [
'id' => (int)$row['id'],
'owner' => (string)$row['uid_owner'],
'fileid' => (int)$row['file_source'],
'target' => (string)$row['file_target'],
];
}
}
public function findOwner(int $fileId): ?string {
$mounts = $this->userMountCache->getMountsForFileId($fileId);
if (!$mounts) {
return null;
}
foreach ($mounts as $mount) {
$userHomeMountPoint = '/' . $mount->getUser()->getUID() . '/';
if ($mount->getMountPoint() === $userHomeMountPoint) {
return $mount->getUser()->getUID();
}
}
return null;
}
public function updateShareOwner(int $shareId, string $owner): void {
$query = $this->connection->getQueryBuilder();
$query->update('share')
->set('uid_owner', $query->createNamedParameter($owner))
->where($query->expr()->eq('id', $query->createNamedParameter($shareId, IQueryBuilder::PARAM_INT)));
$query->executeStatement();
}
}
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