simple ssl_requirement in cakePHP

simple ssl_requirement in cakePHP.php

<?
class AppController extends Controller {
  var $sslRequired = array('login', 'logout');
  var $sslAllowed = array('index');
  var $beforeFilter = array('ensureProperProtocol');

  private function sslRequired() {
    return in_array($this->action, $this->sslRequired);
  }

  private function sslAllowed() {
    return in_array($this->action, $this->sslAllowed);
  }

  private function ensureProperProtocol () {
    if ($this->sslAllowed())
      return true;

    if (!env('HTTPS') && $this->sslRequired()) {
      $this->redirect('https://' . env('HTTP_HOST') . env('REQUEST_URI'));
    }
    elseif (env('HTTPS') && !$this->sslRequired()) {
      $this->redirect('http://' . env('HTTP_HOST') . env('REQUEST_URI'));
    }
  }
}
?>