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<?php
/**
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @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/>
*
*/
namespace OC\Files\Cache;
/**
* Class Storage
*
* cache storage specific data
*
* @package OC\Files\Cache
*/
class Storage {
private $storageId;
private $numericId;
/**
* @param \OC\Files\Storage\Storage|string $storage
* @throws \RuntimeException
*/
public function __construct($storage) {
if ($storage instanceof \OC\Files\Storage\Storage) {
$this->storageId = $storage->getId();
} else {
$this->storageId = $storage;
}
$this->storageId = self::adjustStorageId($this->storageId);
$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
$result = \OC_DB::executeAudited($sql, array($this->storageId));
if ($row = $result->fetchRow()) {
$this->numericId = $row['numeric_id'];
} else {
$connection = \OC_DB::getConnection();
if ($connection->insertIfNotExist('*PREFIX*storages', ['id' => $this->storageId])) {
$this->numericId = \OC_DB::insertid('*PREFIX*storages');
} else {
$result = \OC_DB::executeAudited($sql, array($this->storageId));
if ($row = $result->fetchRow()) {
$this->numericId = $row['numeric_id'];
} else {
throw new \RuntimeException('Storage exists when inserting and does not exist on select... go away');
}
}
}
}
/**
* Adjusts the storage id to use md5 if too long
* @param string $storageId storage id
* @return unchanged $storageId if its length is less than 64 characters,
* else returns the md5 of $storageId
*/
public static function adjustStorageId($storageId) {
if (strlen($storageId) > 64) {
return md5($storageId);
}
return $storageId;
}
/**
* @return string
*/
public function getNumericId() {
return $this->numericId;
}
/**
* @return string|null
*/
public static function getStorageId($numericId) {
$sql = 'SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?';
$result = \OC_DB::executeAudited($sql, array($numericId));
if ($row = $result->fetchRow()) {
return $row['id'];
} else {
return null;
}
}
/**
* @return string|null
*/
public static function getNumericStorageId($storageId) {
$storageId = self::adjustStorageId($storageId);
$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
$result = \OC_DB::executeAudited($sql, array($storageId));
if ($row = $result->fetchRow()) {
return $row['numeric_id'];
} else {
return null;
}
}
/**
* @param string $storageId
* @return bool
*/
public static function exists($storageId) {
return !is_null(self::getNumericStorageId($storageId));
}
/**
* remove the entry for the storage
*
* @param string $storageId
*/
public static function remove($storageId) {
$storageId = self::adjustStorageId($storageId);
$numericId = self::getNumericStorageId($storageId);
$sql = 'DELETE FROM `*PREFIX*storages` WHERE `id` = ?';
\OC_DB::executeAudited($sql, array($storageId));
if (!is_null($numericId)) {
$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `storage` = ?';
\OC_DB::executeAudited($sql, array($numericId));
}
}
}
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