function edd_get_htaccess_rules( $method = false ) {

  if( empty( $method ) )
    $method = edd_get_file_download_method();

  switch( $method ) :

    case 'redirect' :
      // Prevent directory browsing
      $rules = "Options -Indexes";
      break;

    case 'direct' :
    default :
      // Prevent directory browsing and direct access to all files, except images (they must be allowed for featured images / thumbnails)
      $allowed_filetypes = apply_filters( 'edd_protected_directory_allowed_filetypes', array( 'jpg', 'jpeg', 'png', 'gif', 'mp3', 'ogg' ) );
      $rules = "Options -Indexes\n";
      $rules .= "deny from all\n";
      $rules .= "<FilesMatch '\.(" . implode( '|', $allowed_filetypes ) . ")$'>\n";
          $rules .= "Order Allow,Deny\n";
          $rules .= "Allow from all\n";
      $rules .= "</FilesMatch>\n";
      break;

  endswitch;
  $rules = apply_filters( 'edd_protected_directory_htaccess_rules', $rules, $method );
  return $rules;
}