func samlCallbackLogin(w http.ResponseWriter, r *http.Request) error {
	if app.AuthScheme.Name() != "saml" {
		return &errors.HTTP{
			Code:    http.StatusBadRequest,
			Message: "This URL is only supported with saml enabled",
		}
	}
	params := map[string]string{}
	content := r.PostFormValue("SAMLResponse")
	if content == "" {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: "Empty SAML Response"}
	}
	params["callback"] = "true"
	params["xml"] = content
	//Get saml.SAMLAuthScheme, error already treated on first check
	scheme, _ := auth.GetScheme("saml")
	_, err := scheme.Login(params)
	if err != nil {
		msg := fmt.Sprintf(cmd.SamlCallbackFailureMessage(), err.Error())
		fmt.Fprint(w, msg)
	} else {
		fmt.Fprint(w, cmd.SamlCallbackSuccessMessage())
	}
	return nil
}
func samlCallbackLogin(w http.ResponseWriter, r *http.Request) error {
	if app.AuthScheme.Name() != "saml" {
		return &errors.HTTP{
			Code:    http.StatusBadRequest,
			Message: "This URL is only supported with saml enabled",
		}
	}
	params := map[string]string{}
	content := r.PostFormValue("SAMLResponse")
	if content == "" {
		return &errors.HTTP{Code: http.StatusBadRequest, Message: "Empty SAML Response"}
	}
	params["callback"] = "true"
	params["xml"] = content
	//Get saml.SAMLAuthScheme, error already treated on first check
	scheme, _ := auth.GetScheme("saml")
	_, err := scheme.Login(params)
	if err != nil {
		msg := fmt.Sprintf(cmd.SamlCallbackFailureMessage(), err.Error())
		fmt.Fprint(w, msg)
	} else {
		fmt.Fprint(w, cmd.SamlCallbackSuccessMessage())
	}
	return nil
}
// title: saml callback
// path: /auth/saml
// method: POST
// responses:
//   200: Ok
//   400: Invalid data