Basic Auth helper for Play Framework

basicauth.scala

  // Call in the scope of a request handler to retrieve basic auth parameters
  // if they are present.
  def basicAuth()(implicit request: Request[_]): Option[(String, String)] = {
    val Basic = "^ *Basic +([^ ].+)$".r
    for {
      auth          <- request.headers.get("Authorization")
      Basic(base64) <- Basic.findFirstIn(auth)
      decoded       <- Option(new BASE64Decoder().decodeBuffer(base64))
      plain         <- Option(new String(decoded, "UTF-8"))
      (a, b)        <- plain.split(':') match {
                         case Array(a, b) => Some((a, b))
                         case _           => None
                       }
    } yield (a, b)
  }

Very neat, simple. Nice work.