code: func BasicAuthenticatedRequest(req macaron.Request, expectedUser, expectedPass string) bool {
  	user, pass, ok := req.BasicAuth()
  	if !ok || subtle.ConstantTimeCompare([]byte(user), []byte(expectedUser)) != 1 || subtle.ConstantTimeCompare([]byte(pass), []byte(expectedPass)) != 1 {
  		return false
  	}
  
  	return true
  }
docs: // BasicAuthenticatedRequest parses the provided HTTP request for basic authentication credentials
  // and returns true if the provided credentials match the expected username and password.
  // Returns false if the request is unauthenticated.
  // Uses constant-time comparison in order to mitigate timing attacks.