145 lines
3.9 KiB
PHP
145 lines
3.9 KiB
PHP
<?php
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/**
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files\Cache;
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/**
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* Class Storage
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*
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* cache storage specific data
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*
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* @package OC\Files\Cache
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*/
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class Storage {
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private $storageId;
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private $numericId;
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/**
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* @param \OC\Files\Storage\Storage|string $storage
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* @throws \RuntimeException
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*/
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public function __construct($storage) {
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if ($storage instanceof \OC\Files\Storage\Storage) {
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$this->storageId = $storage->getId();
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} else {
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$this->storageId = $storage;
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}
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$this->storageId = self::adjustStorageId($this->storageId);
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$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
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$result = \OC_DB::executeAudited($sql, array($this->storageId));
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if ($row = $result->fetchRow()) {
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$this->numericId = $row['numeric_id'];
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} else {
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$connection = \OC_DB::getConnection();
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if ($connection->insertIfNotExist('*PREFIX*storages', ['id' => $this->storageId])) {
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$this->numericId = \OC_DB::insertid('*PREFIX*storages');
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} else {
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$result = \OC_DB::executeAudited($sql, array($this->storageId));
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if ($row = $result->fetchRow()) {
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$this->numericId = $row['numeric_id'];
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} else {
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throw new \RuntimeException('Storage could neither be inserted nor be selected from the database');
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}
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}
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}
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}
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/**
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* Adjusts the storage id to use md5 if too long
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* @param string $storageId storage id
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* @return unchanged $storageId if its length is less than 64 characters,
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* else returns the md5 of $storageId
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*/
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public static function adjustStorageId($storageId) {
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if (strlen($storageId) > 64) {
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return md5($storageId);
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}
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return $storageId;
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}
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/**
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* @return string
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*/
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public function getNumericId() {
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return $this->numericId;
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}
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/**
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* @return string|null
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*/
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public static function getStorageId($numericId) {
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$sql = 'SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?';
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$result = \OC_DB::executeAudited($sql, array($numericId));
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if ($row = $result->fetchRow()) {
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return $row['id'];
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} else {
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return null;
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}
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}
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/**
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* @return string|null
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*/
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public static function getNumericStorageId($storageId) {
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$storageId = self::adjustStorageId($storageId);
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$sql = 'SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?';
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$result = \OC_DB::executeAudited($sql, array($storageId));
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if ($row = $result->fetchRow()) {
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return $row['numeric_id'];
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} else {
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return null;
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}
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}
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/**
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* @param string $storageId
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* @return bool
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*/
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public static function exists($storageId) {
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return !is_null(self::getNumericStorageId($storageId));
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}
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/**
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* remove the entry for the storage
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*
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* @param string $storageId
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*/
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public static function remove($storageId) {
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$storageId = self::adjustStorageId($storageId);
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$numericId = self::getNumericStorageId($storageId);
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$sql = 'DELETE FROM `*PREFIX*storages` WHERE `id` = ?';
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\OC_DB::executeAudited($sql, array($storageId));
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if (!is_null($numericId)) {
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$sql = 'DELETE FROM `*PREFIX*filecache` WHERE `storage` = ?';
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\OC_DB::executeAudited($sql, array($numericId));
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}
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}
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}
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