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<?php
/**
* Akeeba Engine
* The modular PHP5 site backup engine
* @copyright Copyright (c)2009-2012 Nicholas K. Dionysopoulos
* @license GNU GPL version 3 or, at your option, any later version
* @package akeebaengine
* @version $Id: srpfiles.php 641 2011-05-23 17:23:38Z nikosdion $
*/
// Protection against direct access
defined('AKEEBAENGINE') or die('Restricted access');
/**
* System Restore Point - Files
*/
class AEFilterSrpfiles extends AEFilterSrpdirs
{
private $allowedfiles = array();
private $filtereddir = null;
function __construct()
{
parent::__construct();
$this->object = 'file';
$this->subtype = 'all';
$this->method = 'api';
}
protected function init()
{
parent::init();
// Get the language name
$this->enabled = true;
switch($this->params->type) {
case 'component':
$this->params->langfiles[] = 'com_'.$this->params->name;
break;
case 'module':
$this->params->langfiles[] = 'mod_'.$this->params->name;
break;
case 'plugin':
// Process core files
$this->params->langfiles[] = 'plg_'.$this->params->group.'_'.$this->params->name;
$this->allowedfiles[] = 'plugins/'.$this->params->group.'/'.$this->params->name.'.php';
$this->allowedfiles[] = 'plugins/'.$this->params->group.'/'.$this->params->name.'.xml';
$this->filtereddir = 'plugins/'.$this->params->group;
break;
case 'template':
$this->params->langfiles[] = 'tpl_'.$this->params->name;
break;
default:
$this->enabled = false;
break;
}
}
protected function is_excluded_by_api($test, $root)
{
// Automatically exclude files in the root of the site named index.htm*,
// .htaccess and robots.txt
$basedir = dirname($test);
if(empty($basedir)) {
$basename = basename($test);
if(in_array($basename,array('index.html', 'index.htm', 'robots.txt', '.htaccess'))) return true;
}
// Custom files are always allowed
if(is_array($this->params->customfiles)) {
if(in_array($test, $this->params->customfiles)) {
return false;
} else {
// but do not include other files in the same directory or its
// subdirectories
$dirTest = dirname($test);
foreach($this->params->customfiles as $customfile) {
$dir = dirname($customfile);
if(substr($dirTest, 0, strlen($dir) + 1) == $dir.'/') return true;
if($dir == $dirTest) return true;
}
}
}
// index.htm* files not directly belonging to an allowed directory (or its
// subdirectories) are excluded
$basename = basename($test);
if(in_array($basename, array('index.html','index.htm'))) {
$basedir = dirname($test);
// Then, check the rest of the directories
foreach($this->alloweddirs as $dir) {
// Skip files in the language directories and below
if($dir == 'language') continue;
if($dir == 'administrator/language') continue;
// Check other directories
if(substr($basedir,0,strlen($dir)) == $dir) return false;
}
return true;
}
// Language files of this extension are always allowed
if( (substr($test,0,9) == 'language/') || (substr($test,0,23) == 'administrator/language/') ) {
$ext = substr($test,-4);
if(strtolower($ext) != '.ini') return true;
$basename = basename($test);
if(!empty($this->params->langfiles)) foreach($this->params->langfiles as $langname) {
if(strpos($test, $langname)) return false;
}
if($this->params->type != 'plugin') return true;
}
if($this->params->type != 'plugin') return false;
// Check if it is an explicitly allowed file
foreach($this->allowedfiles as $file) {
if($test == $file) {
return false;
};
}
// Disallow files in the filtered dir
if(!empty($this->filtereddir)) {
if(strpos($test, $this->filtereddir) === 0) {
return true;
}
}
// Allow files inside the allowed directories
foreach($this->alloweddirs as $dir) {
if(strlen($test) < strlen($dir)) continue;
$check = $dir.'/';
if(strpos($test, $check) === 0) {
return false;
}
}
// Exclude other files
return true;
}
}