151 lines
3.5 KiB
PHP
151 lines
3.5 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
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* Copyright (c) 2014 Vincent Petry <pvince81@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\Cache;
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use OC\Files\Filesystem;
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use OC\Files\View;
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class File {
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protected $storage;
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/**
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* Returns the cache storage for the logged in user
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*
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* @return \OC\Files\View cache storage
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*/
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protected function getStorage() {
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if (isset($this->storage)) {
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return $this->storage;
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}
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if (\OC_User::isLoggedIn()) {
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$rootView = new View();
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$user = \OC::$server->getUserSession()->getUser();
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Filesystem::initMountPoints($user->getUID());
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if (!$rootView->file_exists('/' . $user->getUID() . '/cache')) {
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$rootView->mkdir('/' . $user->getUID() . '/cache');
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}
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$this->storage = new View('/' . $user->getUID() . '/cache');
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return $this->storage;
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} else {
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\OC_Log::write('core', 'Can\'t get cache storage, user not logged in', \OC_Log::ERROR);
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throw new \OC\ForbiddenException('Can\t get cache storage, user not logged in');
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}
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}
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/**
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* @param string $key
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*/
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public function get($key) {
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$result = null;
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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if ($this->hasKey($key)) {
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$storage = $this->getStorage();
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$result = $storage->file_get_contents($key);
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}
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\OC_FileProxy::$enabled = $proxyStatus;
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return $result;
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}
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/**
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* Returns the size of the stored/cached data
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*
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* @param string $key
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* @return int
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*/
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public function size($key) {
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$result = 0;
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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if ($this->hasKey($key)) {
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$storage = $this->getStorage();
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$result = $storage->filesize($key);
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}
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\OC_FileProxy::$enabled = $proxyStatus;
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return $result;
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}
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/**
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* @param string $key
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*/
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public function set($key, $value, $ttl = 0) {
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$storage = $this->getStorage();
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$result = false;
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$proxyStatus = \OC_FileProxy::$enabled;
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\OC_FileProxy::$enabled = false;
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if ($storage and $storage->file_put_contents($key, $value)) {
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if ($ttl === 0) {
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$ttl = 86400; // 60*60*24
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}
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$result = $storage->touch($key, time() + $ttl);
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}
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\OC_FileProxy::$enabled = $proxyStatus;
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return $result;
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}
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public function hasKey($key) {
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$storage = $this->getStorage();
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if ($storage && $storage->is_file($key) && $storage->isReadable($key)) {
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return true;
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}
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return false;
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}
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/**
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* @param string $key
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*/
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public function remove($key) {
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$storage = $this->getStorage();
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if (!$storage) {
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return false;
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}
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return $storage->unlink($key);
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}
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public function clear($prefix = '') {
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$storage = $this->getStorage();
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if ($storage and $storage->is_dir('/')) {
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$dh = $storage->opendir('/');
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if (is_resource($dh)) {
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while (($file = readdir($dh)) !== false) {
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if ($file != '.' and $file != '..' and ($prefix === '' || strpos($file, $prefix) === 0)) {
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$storage->unlink('/' . $file);
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}
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}
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}
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}
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return true;
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}
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public function gc() {
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$storage = $this->getStorage();
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if ($storage and $storage->is_dir('/')) {
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$now = time();
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$dh = $storage->opendir('/');
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if (!is_resource($dh)) {
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return null;
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}
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while (($file = readdir($dh)) !== false) {
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if ($file != '.' and $file != '..') {
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$mtime = $storage->filemtime('/' . $file);
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if ($mtime < $now) {
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$storage->unlink('/' . $file);
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}
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}
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}
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}
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}
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public static function loginListener() {
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$c = new self();
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$c->gc();
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}
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}
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