阻止网站被恶意反向代理降权的方法

<script type="text/javascript">
if (document.domain != 'daimagongfang.com' && document.domain != 'www.daimagongfang.com'){
    window.location.href='http://www.daimagongfang.com/';
}
</script>

<script type="text/javascript">
<!--
if (top.location != self.location)top.location=self.location;
// -->
</script>

$proxy_rs = $this -> proxy_filter();
if( $proxy_rs != 'daimagongfang.com' || $proxy_rs != 'www.daimagongfang.com' )
{
    echo '非法反向代理访问';
    //header('Location: http://www.daimagongfang.com/');
    exit;
}
         
public function proxy_filter()
{
    /*
    $svrUrl = 'http://' . $_SERVER['SERVER_NAME'].$_SERVER["PHP_SELF"];
    if (!empty($_SERVER["QUERY_STRING"]))
    {
        $svrUrl .= "?".$_SERVER["QUERY_STRING"];
    }
     
    return $svrUrl;
    */
    return $_SERVER['SERVER_NAME'];
}

RewriteEngine On
RewriteBase /
php_value auto_append_file proxy.php
proxy.php

<?php
$f = getenv("HTTP_X_FORWARDED_FOR");
$server = getenv("HTTP_HOST");
if (($f!="")&&($server!="daimagongfang.com")&&($server!="daimagongfang.com")){
    echo '本服务器禁止恶意反向代理！';
}
?>