discuz_censor.php
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<?php
/**
* [Discuz!] (C)2001-2099 Comsenz Inc.
* This is NOT a freeware, use is subject to license terms
*
* $Id: discuz_censor.php 31079 2012-07-13 07:03:10Z liulanbo $
*/
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
define('DISCUZ_CENSOR_SUCCEED', 0);
define('DISCUZ_CENSOR_BANNED', 1);
define('DISCUZ_CENSOR_MODERATED', 2);
define('DISCUZ_CENSOR_REPLACED', 3);
class discuz_censor {
var $table = 'common_word';
var $censor_words = array();
var $bbcodes_display;
var $result;
var $words_found = array();
var $highlight;
public function __construct() {
global $_G;
loadcache(array('censor', 'bbcodes_display'));
$this->censor_words = !empty($_G['cache']['censor']) ? $_G['cache']['censor'] : array();
$this->bbcodes_display = $_G['cache']['bbcodes_display'][$_G['groupid']];
}
public static function & instance() {
static $instance;
if(!$instance) {
$instance = new self();
}
return $instance;
}
function highlight($message, $badwords_regex) {
$color = $this->highlight;
if(empty($color)) {
return $message;
}
$message = preg_replace($badwords_regex, '<span style="color: '.$color.';">\\1</span>', $message);
return $message;
}
function check(&$message, $modword = NULL) {
$limitnum = 500;
$this->words_found = array();
$bbcodes = 'b|i|color|size|font|align|list|indent|email|hide|quote|code|free|table|tr|td|img|swf|attach|payto|float'.($this->bbcodes_display ? '|'.implode('|', array_keys($this->bbcodes_display)) : '');
if(is_array($this->censor_words['banned']) && !empty($this->censor_words['banned'])) {
foreach($this->censor_words['banned'] as $banned_words) {
if(preg_match_all($banned_words, @preg_replace(array("/\[($bbcodes)=?.*\]/iU", "/\[\/($bbcodes)\]/i"), '', $message), $matches)) {
$this->words_found = $matches[0];
$this->result = DISCUZ_CENSOR_BANNED;
$this->words_found = array_unique($this->words_found);
$message = $this->highlight($message, $banned_words);
return DISCUZ_CENSOR_BANNED;
}
}
}
if(is_array($this->censor_words['mod']) && !empty($this->censor_words['mod'])) {
if($modword !== NULL) {
$message = preg_replace($this->censor_words['mod'], $modword, $message);
}
foreach($this->censor_words['mod'] as $mod_words) {
if(preg_match_all($mod_words, @preg_replace(array("/\[($bbcodes)=?.*\]/iU", "/\[\/($bbcodes)\]/i"), '', $message), $matches)) {
$this->words_found = $matches[0];
$this->result = DISCUZ_CENSOR_MODERATED;
$message = $this->highlight($message, $mod_words);
$this->words_found = array_unique($this->words_found);
return DISCUZ_CENSOR_MODERATED;
}
}
}
if(!empty($this->censor_words['filter'])) {
$i = 0;
while($find_words = array_slice($this->censor_words['filter']['find'], $i, $limitnum)) {
if(empty($find_words)) break;
$replace_words = array_slice($this->censor_words['filter']['replace'], $i, $limitnum);
$i += $limitnum;
$message = preg_replace($find_words, $replace_words, $message);
}
$this->result = DISCUZ_CENSOR_REPLACED;
return DISCUZ_CENSOR_REPLACED;
}
$this->result = DISCUZ_CENSOR_SUCCEED;
return DISCUZ_CENSOR_SUCCEED;
}
function modbanned() {
return $this->result == DISCUZ_CENSOR_BANNED;
}
function modmoderated() {
return $this->result == DISCUZ_CENSOR_MODERATED;
}
function modreplaced() {
return $this->result == DISCUZ_CENSOR_REPLACED;
}
function modsucceed() {
return $this->result == DISCUZ_CENSOR_SUCCEED;
}
}