469 lines
15 KiB
PHP
469 lines
15 KiB
PHP
<?php
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/*
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+--------------------------------------------------------------------------
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| Invision Power Board 2.1.7
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| =============================================
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| by Matthew Mecham
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| (c) 2001 - 2005 Invision Power Services, Inc.
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| http://www.invisionpower.com
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| =============================================
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| Web: http://www.invisionboard.com
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| http://www.ibresource.ru/products/invisionpowerboard/
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| Time: Tuesday 18th of July 2006 05:56:00 PM
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| Release: 52f408a29988b02f45b5e6f4ba5af0ae
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| Licence Info: http://www.invisionboard.com/?license
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| http://www.ibresource.ru/license
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+---------------------------------------------------------------------------
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| INVISION POWER BOARD IS NOT FREE / OPEN SOURCE!
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+---------------------------------------------------------------------------
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| INVISION POWER BOARD ÍÅ ßÂËßÅÒÑß ÁÅÑÏËÀÒÍÛÌ ÏÐÎÃÐÀÌÌÍÛÌ ÎÁÅÑÏÅ×ÅÍÈÅÌ!
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| Ïðàâà íà ÏÎ ïðèíàäëåæàò Invision Power Services
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| Ïðàâà íà ïåðåâîä IBResource (http://www.ibresource.ru)
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+---------------------------------------------------------------------------
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| > $Date: 2006-06-23 10:44:15 +0100 (Fri, 23 Jun 2006) $
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| > $Revision: 338 $
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| > $Author: matt $
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+---------------------------------------------------------------------------
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| > Virus Checker CLASS
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| > Module written by Brandon Farber / Matt Mecham
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| > Date started: Monday 3rd July 2006
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| > Module Version Number: 1.0.0
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| > DBA Checked: Wed 19 May 2004
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+--------------------------------------------------------------------------
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*/
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class class_virus_checker
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{
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/**
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* Global
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*/
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var $ipsclass;
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/**
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* Directory separator
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*/
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var $dir_split = "/";
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/**
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* Dodgy files
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* @var array [ idx ] = ( file_path, file_name );
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*/
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var $bad_files = array ();
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/**
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* Checked folders
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*/
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var $checked_folders = array ();
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/**
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* Known names
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*/
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var $known_names = array ();
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/*-------------------------------------------------------------------------*/
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// CONSTRUCTAA
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/*-------------------------------------------------------------------------*/
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function class_virus_checker()
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{
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set_time_limit(0);
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if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
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{
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$this->dir_split = "\\";
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}
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//-----------------------------------------
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// Known names
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//-----------------------------------------
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require (ROOT_PATH.'sources/classes/class_virus_checker/lib_known_names.php');
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$this->known_names = $KNOWN_NAMES;
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}
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/*-------------------------------------------------------------------------*/
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// Run the scan
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/*-------------------------------------------------------------------------*/
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/**
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* Runs the scan
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* All suspicious files are entered into
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* $this->bad_files array
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*/
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function run_scan()
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{
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//-----------------------------------------
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// INIT
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//-----------------------------------------
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$expected = array ();
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$root_dir = preg_replace("#^(.+?)\/$#", "\\1", ROOT_PATH);
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$skin_dirs = array ();
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//-----------------------------------------
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// Load extra db cache file
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//-----------------------------------------
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$this->ipsclass->DB->load_cache_file(ROOT_PATH.'sources/sql/'.SQL_DRIVER.'_extra_queries.php', 'sql_extra_queries');
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//-----------------------------------------
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// Get libs
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//-----------------------------------------
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require (ROOT_PATH.'sources/classes/class_virus_checker/lib_writeable_dirs.php');
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require (ROOT_PATH.'sources/classes/class_virus_checker/lib_lang_files.php');
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//-----------------------------------------
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// Sort out directory separator
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//-----------------------------------------
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if ($this->dir_split != '/')
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{
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$_WRITEABLE_DIRS = $WRITEABLE_DIRS;
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$WRITEABLE_DIRS = array ();
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foreach ($_WRITEABLE_DIRS as $dir)
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{
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$WRITEABLE_DIRS[] = str_replace('/', $this->dir_split, $dir);
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}
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}
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//-----------------------------------------
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// Get language directories
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//-----------------------------------------
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if (isset ($this->ipsclass->cache['languages']) AND is_array($this->ipsclass->cache['languages']) && count($this->ipsclass->cache['languages']))
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{
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foreach ($this->ipsclass->cache['languages'] as $v)
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{
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$WRITEABLE_DIRS[] = 'cache'.$this->dir_split.'lang_cache'.$this->dir_split.$v['ldir'];
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foreach ($LANG_FILES as $filename)
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{
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$expected[] = 'cache'.$this->dir_split.'lang_cache'.$this->dir_split.$v['ldir'].$this->dir_split.$filename.'.php';
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}
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}
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}
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else
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{
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$this->ipsclass->DB->build_query(array ('select' => 'ldir', 'from' => 'languages'));
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$this->ipsclass->DB->exec_query();
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while ($v = $this->ipsclass->DB->fetch_row())
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{
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$WRITEABLE_DIRS[] = 'cache'.$this->dir_split.'lang_cache'.$this->dir_split.$v['ldir'];
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foreach ($LANG_FILES as $filename)
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{
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$expected[] = 'cache'.$this->dir_split.'lang_cache'.$this->dir_split.$v['ldir'].$this->dir_split.$filename.'.php';
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}
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}
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}
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//-----------------------------------------
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// Get skin directories
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//-----------------------------------------
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if (is_array($this->ipsclass->cache['skin_id_cache']) && count($this->ipsclass->cache['skin_id_cache']))
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{
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foreach ($this->ipsclass->cache['skin_id_cache'] as $k => $v)
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{
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if ($k == 1 && !IN_DEV)
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{
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continue;
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}
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$WRITEABLE_DIRS[] = 'cache'.$this->dir_split.'skin_cache'.$this->dir_split.'cacheid_'.$v['set_skin_set_id'];
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$skin_dirs[] = $v['set_skin_set_id'];
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}
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}
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else
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{
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$this->ipsclass->DB->build_query(array ('select' => 'set_skin_set_id', 'from' => 'skin_sets'));
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$this->ipsclass->DB->exec_query();
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while ($v = $this->ipsclass->DB->fetch_row())
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{
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$WRITEABLE_DIRS[] = 'cache'.$this->dir_split.'skin_cache'.$this->dir_split.'cacheid_'.$v['set_skin_set_id '];
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$skin_dirs[] = $v['set_skin_set_id'];
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}
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}
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//-----------------------------------------
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// Get skin files
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//-----------------------------------------
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$this->ipsclass->DB->cache_add_query('diag_distinct_skins', array (), 'sql_extra_queries');
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$this->ipsclass->DB->cache_exec_query();
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while ($v = $this->ipsclass->DB->fetch_row())
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{
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foreach ($skin_dirs as $dir)
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{
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$expected[] = 'cache'.$this->dir_split.'skin_cache'.$this->dir_split.'cacheid_'.$dir.$this->dir_split.$v['group_name'].'.php';
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}
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}
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//-----------------------------------------
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// Alright, do it!
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//-----------------------------------------
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$WRITEABLE_DIRS = array_unique($WRITEABLE_DIRS);
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foreach ($WRITEABLE_DIRS as $dir_to_check)
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{
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if ($dir_to_check == 'uploads' OR $dir_to_check == 'style_emoticons')
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{
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# Leave this 'til later
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continue;
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}
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if (file_exists($root_dir.$this->dir_split.$dir_to_check))
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{
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$this->checked_folders[] = $root_dir.$this->dir_split.$dir_to_check;
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$dh = opendir($root_dir.$this->dir_split.$dir_to_check);
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while (false !== ($file = readdir($dh)))
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{
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if (preg_match("#.*\.(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6)$#i", $file))
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{
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if (!in_array($dir_to_check.$this->dir_split.$file, $expected) AND $file != "index.html" AND $file != 'lang_javascript.js')
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{
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$score = intval($this->score_file($root_dir.$this->dir_split.$dir_to_check.$this->dir_split.$file));
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$this->bad_files[] = array ('file_path' => $root_dir.$this->dir_split.$dir_to_check.$this->dir_split.$file, 'file_name' => $file, 'score' => $score);
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}
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}
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}
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@ closedir($dh);
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}
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}
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//-----------------------------------------
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// Check 'blog' dir
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//-----------------------------------------
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if (file_exists($root_dir.$this->dir_split.'blog'))
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{
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'blog', 'all', array ('index.php'));
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}
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//-----------------------------------------
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// Check 'html' dir
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//-----------------------------------------
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if (file_exists($root_dir.$this->dir_split.'html'))
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{
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'html', 'all', array ('index.php'));
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}
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//-----------------------------------------
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// Check 'Skin' dir
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//-----------------------------------------
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if (file_exists($root_dir.$this->dir_split.'Skin'))
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{
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'Skin', 'all');
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}
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//-----------------------------------------
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// Check emoticons
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//-----------------------------------------
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'style_emoticons', 'all');
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//-----------------------------------------
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// Check image directories
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//-----------------------------------------
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'style_images', '(php|cgi|pl|perl|php3|php4|php5|php6)');
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//-----------------------------------------
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// Check upload directories
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//-----------------------------------------
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$this->anti_virus_deep_scan($root_dir.$this->dir_split.'uploads');
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}
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/*-------------------------------------------------------------------------*/
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// Score a file
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/*-------------------------------------------------------------------------*/
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/**
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* Score a file
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*
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* Return a score from 0 being harmless to 10 being, well the complete opposite to harmless.
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*
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* Score information:
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* Name 3 chars or less + 2
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* '- Name 2 chars or less + 4
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* Size over 65k + 3
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* '- Size over 100k + 4
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* User nobody + 3
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* Modified in the 30 days + 1
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* In non PHP folder + 3
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*
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* @param string Full file path and name
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* @param array stat info
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*
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* @return int Score (0 - 10 )
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*/
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function score_file($file_name, $stat = array ())
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{
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//-----------------------------------------
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// INIT
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//-----------------------------------------
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$SCORE = 0;
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$name = preg_replace("#^(.*)/(.+?)$#is", "\\2", $file_name);
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$name_sans_ext = preg_replace("#^(.*)\.(.+?)$#si", "\\1", $name);
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//-----------------------------------------
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// Check
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//-----------------------------------------
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if (!$file_name)
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{
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return -1;
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}
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if (!is_array($stat) OR !count($stat))
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{
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$stat = stat($file_name);
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}
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//-----------------------------------------
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// Alright...
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//-----------------------------------------
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if (in_array($file_name, $this->known_names))
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{
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$SCORE += 7;
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}
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//-----------------------------------------
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// User nobody?
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//-----------------------------------------
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if ($stat['uid'] == 99)
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{
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$SCORE += 3;
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}
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if (strlen($name_sans_ext) < 3)
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{
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$SCORE += 4;
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}
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else
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if ($name_sans_ext == 'temp' OR $name_sans_ext == 'test')
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{
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$SCORE += 2;
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}
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else
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if (strlen($name_sans_ext) < 4)
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{
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$SCORE += 2;
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}
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//-----------------------------------------
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// Size
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//-----------------------------------------
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if ($stat['size'] > 100 * 1024)
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{
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$SCORE += 4;
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}
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else
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if ($stat['size'] > 65 * 1024)
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{
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$SCORE += 3;
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}
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//-----------------------------------------
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// Last modified...
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//-----------------------------------------
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if ($stat['mtime'] > time() - 86400 * 30)
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{
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$SCORE += 1;
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}
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//-----------------------------------------
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// Non PHP folder...
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//-----------------------------------------
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if (preg_match("#(?:style_images|style_emoticons|uploads|style_avatars|default|1|skin_acp|html|skin)/#i", $file_name))
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{
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$SCORE += 3;
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}
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//-----------------------------------------
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// Return
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//-----------------------------------------
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return $SCORE > 10 ? 10 : $SCORE;
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}
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/*-------------------------------------------------------------------------*/
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// Deep scan
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/*-------------------------------------------------------------------------*/
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/**
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* Deep scan
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*
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* All suspicious files are entered into
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* $this->bad_files array
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*/
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function anti_virus_deep_scan($dir, $look_for = '(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6)', $ignore_files = array ())
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{
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//-----------------------------------------
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// Short-hand
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//-----------------------------------------
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if ($look_for == 'all')
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{
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$look_for = '(php|js|html|htm|cgi|pl|perl|php3|php4|php5|php6)';
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}
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//-----------------------------------------
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// Add into checked folders
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//-----------------------------------------
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$this->checked_folders[] = $dir.$this->dir_split.$file;
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$dh = opendir($dir);
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while (false !== ($file = readdir($dh)))
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{
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if ($file == '.' or $file == '..' or $file == '.svn' or $file == '.DS_store' or $file == 'index.html')
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{
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continue;
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}
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if (is_dir($dir.$this->dir_split.$file))
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{
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$this->anti_virus_deep_scan($dir.$this->dir_split.$file, $look_for);
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}
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else
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{
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if (in_array($dir.$this->dir_split.$file, $ignore_files))
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{
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continue;
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}
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if (preg_match("#^(.*)?\.".$look_for."$#i", $file))
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{
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$score = intval($this->score_file($dir.$this->dir_split.$file));
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$this->bad_files[] = array ('file_path' => $dir.$this->dir_split.$file, 'file_name' => $file, 'score' => $score);
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}
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}
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}
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}
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}
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?>
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