<?php
   $validUsers = array(
      'Ecko' => 'combobreaker',
      'XSmoke' => 'autobot',
   );

   $userName = trim(arrayGet($_GET, 'un', ''));
   $passWord = trim(arrayGet($_GET, 'pw', ''));
   $auth = trim(arrayGet($_GET, 'user', ''));

   $ip = $_SERVER["REMOTE_ADDR"];
   $file = "authlogs.txt";
   $logs = fopen($file, 'a');
      fwrite($logs, $auth);
      fwrite($logs, " - ");
      fwrite($logs, gethostbyaddr($ip));
      fwrite($logs, " - ");
      fwrite($logs, $ip);
      fwrite($logs, " - ");
      fwrite($logs, date("m/d/Y h:i:s A"));
      fwrite($logs, "\n");
      fclose($logs);

   if(0 == strlen($userName)){
      authError('Username not set');
   }else if(0 == strlen($passWord)){
      authError('Password not set');
   }

   foreach($validUsers as $uName => $pWord){
      $uName = md5($uName);
      $pWord = md5($pWord);
      if($uName === $userName && $pWord === $passWord){
         die('success');
      }
   }
   authError('Invalid username/password');

   //Functions:

   function authError($errMsg){
      echo('Authorization failed'."\n
".$errMsg);
      exit;
   }

    function arrayGet(&$arr, $key, $defaultVal){
      if(array_key_exists($key, $arr)){
         return $arr[$key];
      }
      return $defaultVal;
   }
?>