File: /var/www/ilya/data/www/irkboard.ru/admin/sources/classes/virusChecker/virusChecker.php
<?php
/**
* Invision Power Services
* IP.Board v3.0.1
* Virus scanner
* Last Updated: $Date: 2009-05-20 16:34:08 -0400 (Wed, 20 May 2009) $
*
* @author $Author: josh $
* @copyright (c) 2001 - 2009 Invision Power Services, Inc.
* @license http://www.invisionpower.com/community/board/license.html
* @package Invision Power Board
* @link http://www.invisionpower.com
* @since Tue. 17th August 2004
* @version $Rev: 4679 $
*
*/
if ( ! defined( 'IN_IPB' ) )
{
print "<h1>Incorrect access</h1>You cannot access this file directly. If you have recently upgraded, make sure you upgraded all the relevant files.";
exit();
}
class virusChecker
{
/**
* Directory separator
*
* @access public
* @var string
*/
public $dir_split = "/";
/**
* Dodgy files
*
* @access public
* @var array
*/
public $bad_files = array();
/**
* Checked folders
*
* @access public
* @var string
*/
public $checked_folders = array();
/**
* Known names
*
* @access public
* @var string
*/
public $known_names = array();
/**#@+
* Registry Object Shortcuts
*
* @access protected
* @var object
*/
protected $registry;
protected $DB;
protected $settings;
protected $lang;
protected $member;
protected $cache;
/**#@-*/
/**
* Constructor
*
* @access public
* @param object ipsRegistry reference
* @return void
*/
public function __construct( ipsRegistry $registry )
{
//-----------------------------------------
// Make object references
//-----------------------------------------
$this->registry = $registry;
$this->DB = $registry->DB();
$this->settings = $registry->settings();
$this->member = $registry->member();
$this->memberData =& $registry->member()->fetchMemberData();
$this->cache = $registry->cache();
$this->caches =& $registry->cache()->fetchCaches();
$this->request = $registry->request();
set_time_limit(0);
if( strpos( strtolower( PHP_OS ), 'win' ) === 0 )
{
$this->dir_split = "\\";
}
//-----------------------------------------
// Known names
//-----------------------------------------
require( IPS_ROOT_PATH . 'sources/classes/virusChecker/lib_known_names.php' );
$this->known_names = $KNOWN_NAMES;
}
/**
* Runs the scan
* All suspicious files are entered into
* $this->bad_files array
*
* @access public
* @return void
*/
public function runScan()
{
//-----------------------------------------
// INIT
//-----------------------------------------
$expected = array();
$root_dir = preg_replace( "#^(.+?)\/$#", "\\1", DOC_IPS_ROOT_PATH );
$skin_dirs = array();
//-----------------------------------------
// Get libs
//-----------------------------------------
require( IPS_ROOT_PATH . 'sources/classes/virusChecker/lib_writeable_dirs.php' );
//-----------------------------------------
// Sort out directory separator
//-----------------------------------------
if ( $this->dir_split != '/' )
{
$_WRITEABLE_DIRS = $WRITEABLE_DIRS;
$WRITEABLE_DIRS = array();
foreach( $_WRITEABLE_DIRS as $dir )
{
$WRITEABLE_DIRS[] = str_replace( '/' , $this->dir_split, $dir );
}
}
//-----------------------------------------
// Get language directories
//-----------------------------------------
if ( ipsRegistry::cache()->getCache('lang_data') AND is_array( ipsRegistry::cache()->getCache('lang_data') ) && count( ipsRegistry::cache()->getCache('lang_data') ) )
{
foreach( ipsRegistry::cache()->getCache('lang_data') as $v )
{
$WRITEABLE_DIRS[] = 'cache' . $this->dir_split . 'lang_cache' . $this->dir_split . $v['lang_id'];
}
}
else
{
$this->DB->build( array( 'select' => 'lang_id', 'from' => 'core_sys_lang' ) );
$this->DB->execute();
while( $v = $this->DB->fetch() )
{
$WRITEABLE_DIRS[] = 'cache' . $this->dir_split . 'lang_cache' . $this->dir_split . $v['lang_id'];
}
}
ipsRegistry::DB()->build( array( 'select' => 'lang_id, word_app, word_pack', 'from' => 'core_sys_lang_words' ) );
ipsRegistry::DB()->execute();
while( $r = ipsRegistry::DB()->fetch() )
{
$expected[ $r['word_app'] . '_' . $r['word_pack'] ] = 'cache' . $this->dir_split . 'lang_cache' . $this->dir_split . $r['lang_id'] . $this->dir_split . $r['word_app'] . '_' . $r['word_pack'] . '.php';
}
//-----------------------------------------
// Get skin directories
//-----------------------------------------
if ( is_array( ipsRegistry::cache()->getCache('skinsets') ) && count( ipsRegistry::cache()->getCache('skinsets') ) )
{
foreach( ipsRegistry::cache()->getCache('skinsets') as $k => $v )
{
if ( $k == 1 && !IN_DEV )
{
continue;
}
$WRITEABLE_DIRS[] = 'cache' . $this->dir_split . 'skin_cache' . $this->dir_split . 'cacheid_' . $v['set_id'];
$skin_dirs[] = $v['set_id'];
}
}
else
{
$this->DB->build( array( 'select' => 'set_id', 'from' => 'skin_collections' ) );
$this->DB->execute();
while( $v = $this->DB->fetch() )
{
$WRITEABLE_DIRS[] = 'cache' . $this->dir_split . 'skin_cache' . $this->dir_split . 'cacheid_' . $v['set_id '];
$skin_dirs[] = $v['set_id'];
}
}
//-----------------------------------------
// Get skin files
//-----------------------------------------
$this->DB->build( array( 'select' => $this->DB->buildDistinct( 'template_group' ),
'from' => 'skin_templates',
'group' => 'template_group'
) );
$this->DB->execute();
while( $v = $this->DB->fetch() )
{
foreach( $skin_dirs as $dir )
{
$expected[] = 'cache' . $this->dir_split . 'skin_cache' . $this->dir_split . 'cacheid_' . $dir . $this->dir_split . $v['template_group'] . '.php';
}
}
//-----------------------------------------
// Alright, do it!
//-----------------------------------------
$WRITEABLE_DIRS = array_unique($WRITEABLE_DIRS);
foreach( $WRITEABLE_DIRS as $dir_to_check )
{
if ( $dir_to_check == 'uploads' OR $dir_to_check == 'style_emoticons' )
{
# Leave this 'til later
continue;
}
if ( file_exists( $root_dir . $this->dir_split . $dir_to_check ) )
{
$this->checked_folders[] = $root_dir . $this->dir_split . $dir_to_check;
$dh = opendir( $root_dir . $this->dir_split . $dir_to_check );
while ( false !== ( $file = readdir($dh) ) )
{
if ( preg_match( "#.*\.(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6)$#i", $file ) )
{
if ( ! in_array( $dir_to_check . $this->dir_split . $file, $expected ) AND $file != "index.html" AND $file != 'lang_javascript.js' )
{
$score = intval( $this->_scoreFile( $root_dir . $this->dir_split . $dir_to_check . $this->dir_split . $file ) );
$this->bad_files[] = array( 'file_path' => $root_dir . $this->dir_split . $dir_to_check . $this->dir_split . $file,
'file_name' => $file,
'score' => $score );
}
}
}
@closedir($dh);
}
}
//-----------------------------------------
// Check 'blog' dir
//-----------------------------------------
if ( file_exists( $root_dir . $this->dir_split . 'blog' ) )
{
$this->deepScan( $root_dir . $this->dir_split . 'blog', 'all', array( 'index.php' ) );
}
//-----------------------------------------
// Check 'html' dir
//-----------------------------------------
if ( file_exists( $root_dir . $this->dir_split . 'html' ) )
{
$this->deepScan( $root_dir . $this->dir_split . 'html', 'all', array( 'index.php' ) );
}
//-----------------------------------------
// Check 'Skin' dir
//-----------------------------------------
if ( file_exists( $root_dir . $this->dir_split . 'Skin' ) )
{
$this->deepScan( $root_dir . $this->dir_split . 'Skin', 'all' );
}
//-----------------------------------------
// Check emoticons
//-----------------------------------------
$this->deepScan( $root_dir . $this->dir_split . 'public/style_emoticons', 'all' );
//-----------------------------------------
// Check image directories
//-----------------------------------------
$this->deepScan( $root_dir . $this->dir_split . 'public/style_images', '(php|cgi|pl|perl|php3|php4|php5|php6|phtml|shtml)' );
//-----------------------------------------
// Check upload directories
//-----------------------------------------
$this->deepScan( $root_dir . $this->dir_split . 'uploads' );
}
/**
* Score a file
*
* Return a score from 0 being harmless to 10 being, well the complete opposite to harmless.
*
* Score information:
* Name 3 chars or less + 2
* '- Name 2 chars or less + 4
* Size over 65k + 3
* '- Size over 100k + 4
* User nobody + 3
* Modified in the 30 days + 1
* In non PHP folder + 3
*
* @access private
* @param string Full file path and name
* @param array stat info
* @return int Score (0 - 10 )
*/
private function _scoreFile( $file_name, $stat=array() )
{
//-----------------------------------------
// INIT
//-----------------------------------------
$SCORE = 0;
$name = preg_replace( "#^(.*)/(.+?)$#is" , "\\2", $file_name );
$name_sans_ext = preg_replace( "#^(.*)\.(.+?)$#si", "\\1", $name );
//-----------------------------------------
// Check
//-----------------------------------------
if ( ! $file_name )
{
return -1;
}
if ( ! is_array( $stat ) OR ! count( $stat ) )
{
$stat = stat( $file_name );
}
//-----------------------------------------
// Alright...
//-----------------------------------------
if ( in_array( $file_name, $this->known_names ) )
{
$SCORE += 7;
}
//-----------------------------------------
// User nobody?
//-----------------------------------------
if ( $stat['uid'] == 99 )
{
$SCORE += 3;
}
if ( strlen( $name_sans_ext ) < 3 )
{
$SCORE += 4;
}
else if ( $name_sans_ext == 'temp' OR $name_sans_ext == 'test' )
{
$SCORE +=2;
}
else if ( strlen( $name_sans_ext ) < 4 )
{
$SCORE += 2;
}
//-----------------------------------------
// Size
//-----------------------------------------
if ( $stat['size'] > 100 * 1024 )
{
$SCORE += 4;
}
else if ( $stat['size'] > 65 * 1024 )
{
$SCORE += 3;
}
//-----------------------------------------
// Last modified...
//-----------------------------------------
if ( $stat['mtime'] > time() - 86400 * 30 )
{
$SCORE += 1;
}
//-----------------------------------------
// Non PHP folder...
//-----------------------------------------
if ( preg_match( "#(?:style_images|style_emoticons|uploads|style_avatars|default|1|skin_acp|html|skin)/#i", $file_name ) )
{
$SCORE += 3;
}
//-----------------------------------------
// Run any plugins
//-----------------------------------------
if( is_dir( IPS_ROOT_PATH . '/sources/classes/virusChecker/plugins' ) )
{
try
{
foreach( new DirectoryIterator( IPS_ROOT_PATH . '/sources/classes/virusChecker/plugins' ) as $file )
{
if ( $file->isFile() )
{
$_name = $file->getFileName();
if( strpos( $_name, '.php' ) )
{
include_once( $file->getPathname() );
if( class_exists( 'virusScannerPlugin_' . str_replace( '.php', '', $_name ) ) )
{
$class = 'virusScannerPlugin_' . str_replace( '.php', '', $_name );
$plugin = new $class( $this->registry );
if( method_exists( $plugin, 'run' ) )
{
$SCORE += $plugin->run( $file_name );
}
}
}
}
}
} catch ( Exception $e ) {}
}
//-----------------------------------------
// Return
//-----------------------------------------
return $SCORE > 10 ? 10 : $SCORE;
}
/**
* Deep scan
*
* All suspicious files are entered into
* $this->bad_files array
*
* @access public
* @param string Directory
* @param string Regex to look for
* @param array Files to ignore
*/
public function deepScan( $dir, $look_for='(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6|htaccess|so|phtml|shtml)', $ignore_files=array() )
{
//-----------------------------------------
// Short-hand
//-----------------------------------------
if ( $look_for == 'all' )
{
$look_for = '(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6|htaccess|so|phtml|shtml)';
}
//-----------------------------------------
// Add into checked folders
//-----------------------------------------
$this->checked_folders[] = $dir . $this->dir_split . $file;
$dh = opendir( $dir );
while ( false !== ( $file = readdir($dh) ) )
{
if ( IN_DEV )
{
if ( $file == '.' or $file == '..' or $file == '.svn' or $file == '.DS_store' or $file == 'index.html' )
{
continue;
}
}
else
{
if ( $file == '.' or $file == '..' )
{
continue;
}
}
if ( is_dir( $dir . $this->dir_split . $file ) )
{
$this->deepScan( $dir . $this->dir_split . $file, $look_for );
}
else
{
if ( in_array( $dir . $this->dir_split . $file, $ignore_files ) )
{
continue;
}
if ( preg_match( "#^(.*)?\." . $look_for . "(?:\..+?)?$#i", $file ) )
{
$score = intval( $this->_scoreFile( $dir . $this->dir_split . $file ) );
$this->bad_files[] = array( 'file_path' => $dir . $this->dir_split . $file,
'file_name' => $file,
'score' => $score );
}
}
}
}
}