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<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
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 $storage
*/
public function __construct($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 {
$sql = 'INSERT INTO `*PREFIX*storages` (`id`) VALUES(?)';
\OC_DB::executeAudited($sql, array($this->storageId));
$this->numericId = \OC_DB::insertid('*PREFIX*storages');
}
}
/**
* 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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