<?
$pwort = 'WLKra48-tem';
$dyntxt = "ip.txt";
$port = "";
$pwortcontrol = $_GET["pass"];
$IP = $_GET["meineip"];
$Protocol = $_GET['protocol']; 
$Port = $_GET['port']; 

if (file_exists($dyntxt)) {	

  if ($Protocol=="") {$Protocol="http";};

  if ($Port==0) {$Port="";};
  if ($Port>=1) {$Port=":".$Port;};
  
  if ($pwortcontrol==$pwort) {
    $a = fopen("$dyntxt", "w");
    fwrite($a, $IP);
    fclose($a);
  }	
  else {
    $a = fopen("$dyntxt", "r+");
    $dynip = fread($a,filesize($dyntxt));
    fclose($a);
    $url=$Protocol."://".$dynip."".$Port;

    header("Location: $url");
  }
}	

?>