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<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Bjoern Schiessle <schiessle@owncloud.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Michael Gapczynski <gapczynskim@gmail.com>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
* @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\Cache;
class File {
protected $storage;
/**
* Returns the cache storage for the logged in user
* @return \OC\Files\View cache storage
*/
protected function getStorage() {
if (isset($this->storage)) {
return $this->storage;
}
if(\OC_User::isLoggedIn()) {
\OC\Files\Filesystem::initMountPoints(\OC_User::getUser());
$this->storage = new \OC\Files\View('/' . \OC_User::getUser() . '/cache');
return $this->storage;
}else{
\OC_Log::write('core', 'Can\'t get cache storage, user not logged in', \OC_Log::ERROR);
throw new \OC\ForbiddenException('Can\t get cache storage, user not logged in');
}
}
/**
* @param string $key
*/
public function get($key) {
$result = null;
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
if ($this->hasKey($key)) {
$storage = $this->getStorage();
$result = $storage->file_get_contents($key);
}
\OC_FileProxy::$enabled = $proxyStatus;
return $result;
}
/**
* Returns the size of the stored/cached data
*
* @param string $key
* @return int
*/
public function size($key) {
$result = 0;
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
if ($this->hasKey($key)) {
$storage = $this->getStorage();
$result = $storage->filesize($key);
}
\OC_FileProxy::$enabled = $proxyStatus;
return $result;
}
/**
* @param string $key
*/
public function set($key, $value, $ttl=0) {
$storage = $this->getStorage();
$result = false;
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
if ($storage and $storage->file_put_contents($key, $value)) {
if ($ttl === 0) {
$ttl = 86400; // 60*60*24
}
$result = $storage->touch($key, time() + $ttl);
}
\OC_FileProxy::$enabled = $proxyStatus;
return $result;
}
public function hasKey($key) {
$storage = $this->getStorage();
if ($storage && $storage->is_file($key) && $storage->isReadable($key)) {
return true;
}
return false;
}
/**
* @param string $key
*/
public function remove($key) {
$storage = $this->getStorage();
if(!$storage) {
return false;
}
return $storage->unlink($key);
}
public function clear($prefix='') {
$storage = $this->getStorage();
if($storage and $storage->is_dir('/')) {
$dh=$storage->opendir('/');
if(is_resource($dh)) {
while (($file = readdir($dh)) !== false) {
if($file!='.' and $file!='..' and ($prefix==='' || strpos($file, $prefix) === 0)) {
$storage->unlink('/'.$file);
}
}
}
}
return true;
}
public function gc() {
$storage = $this->getStorage();
if($storage and $storage->is_dir('/')) {
$now = time();
$dh=$storage->opendir('/');
if(!is_resource($dh)) {
return null;
}
while (($file = readdir($dh)) !== false) {
if($file!='.' and $file!='..') {
$mtime = $storage->filemtime('/'.$file);
if ($mtime < $now) {
$storage->unlink('/'.$file);
}
}
}
}
}
public static function loginListener() {
$c = new self();
$c->gc();
}
}
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