139 lines
3.2 KiB
PHP
139 lines
3.2 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Files\Cache;
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/**
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* Provide read only support for the old filecache
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*/
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class Legacy {
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private $user;
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private $cacheHasItems = null;
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/**
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* @param string $user
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*/
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public function __construct($user) {
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$this->user = $user;
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}
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/**
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* get the numbers of items in the legacy cache
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*
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* @return int
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*/
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function getCount() {
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$sql = 'SELECT COUNT(`id`) AS `count` FROM `*PREFIX*fscache` WHERE `user` = ?';
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$result = \OC_DB::executeAudited($sql, array($this->user));
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if ($row = $result->fetchRow()) {
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return $row['count'];
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} else {
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return 0;
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}
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}
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/**
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* check if a legacy cache is present and holds items
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*
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* @return bool
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*/
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function hasItems() {
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if (!is_null($this->cacheHasItems)) {
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return $this->cacheHasItems;
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}
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try {
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$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*fscache` WHERE `user` = ?',1);
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} catch (\Exception $e) {
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$this->cacheHasItems = false;
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return false;
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}
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try {
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$result = $query->execute(array($this->user));
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} catch (\Exception $e) {
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$this->cacheHasItems = false;
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return false;
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}
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if ($result === false || property_exists($result, 'error_message_prefix')) {
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$this->cacheHasItems = false;
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return false;
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}
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$this->cacheHasItems = (bool)$result->fetchRow();
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return $this->cacheHasItems;
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}
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/**
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* get an item from the legacy cache
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*
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* @param string $path
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* @return array
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*/
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function get($path) {
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if (is_numeric($path)) {
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$sql = 'SELECT * FROM `*PREFIX*fscache` WHERE `id` = ?';
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} else {
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$sql = 'SELECT * FROM `*PREFIX*fscache` WHERE `path` = ?';
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}
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$result = \OC_DB::executeAudited($sql, array($path));
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$data = $result->fetchRow();
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$data['etag'] = $this->getEtag($data['path'], $data['user']);
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return $data;
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}
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/**
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* Get the ETag for the given path
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*
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* @param type $path
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* @return string
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*/
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function getEtag($path, $user = null) {
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static $query = null;
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$pathDetails = explode('/', $path, 4);
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if((!$user) && !isset($pathDetails[1])) {
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//no user!? Too odd, return empty string.
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return '';
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} else if(!$user) {
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//guess user from path, if no user passed.
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$user = $pathDetails[1];
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}
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if(!isset($pathDetails[3]) || is_null($pathDetails[3])) {
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$relativePath = '';
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} else {
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$relativePath = $pathDetails[3];
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}
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if(is_null($query)){
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$query = \OC_DB::prepare('SELECT `propertyvalue` FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = \'{DAV:}getetag\'');
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}
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$result = \OC_DB::executeAudited($query,array($user, '/' . $relativePath));
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if ($row = $result->fetchRow()) {
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return trim($row['propertyvalue'], '"');
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} else {
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return '';
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}
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}
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/**
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* get all child items of an item from the legacy cache
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*
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* @param int $id
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* @return array
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*/
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function getChildren($id) {
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$result = \OC_DB::executeAudited('SELECT * FROM `*PREFIX*fscache` WHERE `parent` = ?', array($id));
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$data = $result->fetchAll();
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foreach ($data as $i => $item) {
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$data[$i]['etag'] = $this->getEtag($item['path'], $item['user']);
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}
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return $data;
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}
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}
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