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Your IP : 216.73.216.152
<?php
/**
* JCH Optimize - Joomla! plugin to aggregate and minify external resources for
* optmized downloads
*
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2014 Samuel Marshall
* @license GNU/GPLv3, See LICENSE file
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
defined('_WP_EXEC') or die('Restricted access');
class JchPlatformCache implements JchInterfaceCache
{
protected static $wp_filesystem;
/**
*
* @param type $id
* @return type
*/
public static function getCache($id)
{
$wp_filesystem = self::getWpFileSystem();
if($wp_filesystem === false)
{
return false;
}
$filename = self::_getFileName($id);
$file = JCH_CACHE_DIR . $filename;
if (!$wp_filesystem->exists($file))
{
return FALSE;
}
return self::_getCacheFile($file, $wp_filesystem);
}
/**
*
* @param type $id
* @param type $function
* @param type $args
* @return type
*/
public static function getCallbackCache($id, $function, $args)
{
$wp_filesystem = self::getWpFileSystem();
if($wp_filesystem === false)
{
return false;
}
$filename = self::_getFileName($id);
$file = JCH_CACHE_DIR . $filename;
if (!file_exists($file) || filemtime($file) > (time() + 86400))
{
$contents = call_user_func_array($function, $args);
$filecontents = base64_encode(serialize($contents));
self::initializeCache();
if ($wp_filesystem->put_contents($file, $filecontents, FS_CHMOD_FILE))
{
return $contents;
}
else
{
throw new Exception(__('Error writing files to cache'));
}
}
return self::_getCacheFile($file, $wp_filesystem);
}
/**
*
* @param type $type
* @return type
*/
public static function deleteCache()
{
$wp_filesystem = self::getWpFileSystem();
if ($wp_filesystem === false || !$wp_filesystem->exists(JCH_CACHE_DIR))
{
return FALSE;
}
if ($wp_filesystem->rmdir(JCH_CACHE_DIR, TRUE))
{
return TRUE;
}
else
{
return FALSE;
}
}
/**
*
* @param type $file
* @return type
*/
private static function _getCacheFile($file, $wp_filesystem)
{
$content = $wp_filesystem->get_contents($file);
return unserialize(base64_decode($content));
}
/**
*
*/
public static function initializeCache()
{
$wp_filesystem = self::getWpFileSystem();
if ($wp_filesystem !== false && !$wp_filesystem->exists(JCH_CACHE_DIR))
{
if (!$wp_filesystem->exists($wp_filesystem->wp_content_dir() . 'cache'))
{
$wp_filesystem->mkdir($wp_filesystem->wp_content_dir() . 'cache', FS_CHMOD_DIR);
}
$wp_filesystem->mkdir(JCH_CACHE_DIR, FS_CHMOD_DIR);
$index = JCH_CACHE_DIR . 'index.html';
$wp_filesystem->put_contents($index, '<html><body></body></html>', FS_CHMOD_FILE);
}
}
/**
*
* @global type $wp_filesystem
* @return type
*/
public static function getWpFileSystem()
{
if (!isset(self::$wp_filesystem))
{
global $wp_filesystem;
$wp_filesystem_cache = $wp_filesystem;
if (!function_exists('request_filesystem_credentials'))
{
include_once ABSPATH . 'wp-admin/includes/file.php';
}
add_filter('request_filesystem_credentials', array('JchPlatformCache', 'requestFilesystemCredentials'), 10, 7);
if (false === ($creds = request_filesystem_credentials(admin_url('options-general.php?page=jchoptimize-settings'), '', false,
WP_CONTENT_DIR, null, true)))
{
$message = 'The plugin needs to access the filesystem via FTP. Please define your FTP credentials in your wp_config.php file like this: <br /><br /><textarea disabled="disabled" rows="3" cols="40" style="background-color: ghostwhite; color: #444; resize: none;">define(\'FTP_HOST\', \'[Your FTP host]\'); define(\'FTP_USER\', \'[Your FTP Username]\'); define(\'FTP_PASS\', \'[Your FTP password]\'); </textarea>';
self::$wp_filesystem = false;
if (function_exists('jch_add_notices'))
{
jch_add_notices('error', __($message, 'jch-optimize'));
return false;
}
else
{
throw new Exception(__($message, 'jch-optimize'));
}
}
if (false === WP_Filesystem($creds, WP_CONTENT_DIR, true))
{
$message = 'Could not connect to the filesystem. Please check your FTP credentials in wp_config.php file';
if (function_exists('jch_add_notices'))
{
jch_add_notices('error', __($message, 'jch-optimize'));
return false;
}
else
{
throw new Exception(__($message));
}
}
self::$wp_filesystem = $wp_filesystem;
if(!defined('JCH_CACHE_DIR'))
{
define('JCH_CACHE_DIR', $wp_filesystem->wp_content_dir() . 'cache/jch-optimize/');
}
$wp_filesystem = $wp_filesystem_cache;
}
return self::$wp_filesystem;
}
/**
*
*/
public static function requestFilesystemCredentials($value, $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership)
{
$method = get_filesystem_method(array(), $context, $allow_relaxed_file_ownership);
if ($method == 'direct')
{
return true;
}
if(!function_exists('wp_generate_password'))
{
include_once ABSPATH . 'wp-includes/pluggable.php';
}
$credentials = get_option('ftp_credentials', array('hostname' => '', 'username' => ''));
$credentials['hostname'] = defined('FTP_HOST') ? FTP_HOST : $credentials['hostname'];
$credentials['username'] = defined('FTP_USER') ? FTP_USER : $credentials['username'];
$credentials['password'] = defined('FTP_PASS') ? FTP_PASS : '';
if ($method == 'ssh2')
{
// Check to see if we are setting the public/private keys for ssh
$credentials['public_key'] = defined('FTP_PUBKEY') ? FTP_PUBKEY : '';
$credentials['private_key'] = defined('FTP_PRIKEY') ? FTP_PRIKEY : '';
}
if (in_array('', $credentials))
{
return false;
}
return $credentials;
}
/**
*
* @param type $id
* @return type
*/
private static function _getFileName($id)
{
return md5(NONCE_SALT . $id);
}
/**
*
*/
public static function gc()
{
$wp_filesystem = self::getWpFileSystem();
if($wp_filesystem === false)
{
return false;
}
$result = true;
$files = JchPlatformUtility::lsFiles(rtrim(JCH_CACHE_DIR, '/\\'), '.', TRUE);
$now = time();
foreach ($files as $file)
{
$time = $wp_filesystem->mtime($file);
if (($time + 86400) < $now || empty($time))
{
$result |= $wp_filesystem->delete($file);
}
}
return $result;
}
}