private void handleCreateRequest(
      final PwmRequest pwmRequest, final GuestRegistrationBean guestRegistrationBean)
      throws PwmUnrecoverableException, ChaiUnavailableException, IOException, ServletException {
    final PwmSession pwmSession = pwmRequest.getPwmSession();
    final PwmApplication pwmApplication = pwmRequest.getPwmApplication();
    final LocalSessionStateBean ssBean = pwmSession.getSessionStateBean();
    final Configuration config = pwmApplication.getConfig();
    final Locale locale = ssBean.getLocale();

    final List<FormConfiguration> guestUserForm = config.readSettingAsForm(PwmSetting.GUEST_FORM);

    try {
      // read the values from the request
      final Map<FormConfiguration, String> formValues =
          FormUtility.readFormValuesFromRequest(pwmRequest, guestUserForm, locale);

      // read the expiration date from the request.
      final Date expirationDate = readExpirationFromRequest(pwmRequest);

      // see if the values meet form requirements.
      FormUtility.validateFormValues(config, formValues, locale);

      // read new user DN
      final String guestUserDN = determineUserDN(formValues, config);

      // read a chai provider to make the user
      final ChaiProvider provider = pwmSession.getSessionManager().getChaiProvider();

      // set up the user creation attributes
      final Map<String, String> createAttributes = new HashMap<>();
      for (final FormConfiguration formItem : formValues.keySet()) {
        LOGGER.debug(
            pwmSession,
            "Attribute from form: " + formItem.getName() + " = " + formValues.get(formItem));
        final String n = formItem.getName();
        final String v = formValues.get(formItem);
        if (n != null && n.length() > 0 && v != null && v.length() > 0) {
          createAttributes.put(n, v);
        }
      }

      // Write creator DN
      createAttributes.put(
          config.readSettingAsString(PwmSetting.GUEST_ADMIN_ATTRIBUTE),
          pwmSession.getUserInfoBean().getUserIdentity().getUserDN());

      // read the creation object classes.
      final Set<String> createObjectClasses =
          new HashSet<>(config.readSettingAsStringArray(PwmSetting.DEFAULT_OBJECT_CLASSES));

      provider.createEntry(guestUserDN, createObjectClasses, createAttributes);
      LOGGER.info(pwmSession, "created user object: " + guestUserDN);

      final ChaiUser theUser = ChaiFactory.createChaiUser(guestUserDN, provider);
      final UserIdentity userIdentity =
          new UserIdentity(
              guestUserDN, pwmSession.getUserInfoBean().getUserIdentity().getLdapProfileID());

      // write the expiration date:
      if (expirationDate != null) {
        final String expirationAttr =
            config.readSettingAsString(PwmSetting.GUEST_EXPIRATION_ATTRIBUTE);
        theUser.writeDateAttribute(expirationAttr, expirationDate);
      }

      final PwmPasswordPolicy passwordPolicy =
          PasswordUtility.readPasswordPolicyForUser(
              pwmApplication, pwmSession.getLabel(), userIdentity, theUser, locale);
      final PasswordData newPassword =
          RandomPasswordGenerator.createRandomPassword(
              pwmSession.getLabel(), passwordPolicy, pwmApplication);
      theUser.setPassword(newPassword.getStringValue());
      /*
      final UserInfoBean guestUserInfoBean = new UserInfoBean();
      final UserStatusReader userStatusReader = new UserStatusReader(pwmApplication);
      userStatusReader.populateUserInfoBean(
              pwmSession.getLabel(),
              guestUserInfoBean,
              pwmSession.getSessionStateBean().getLocale(),
              userIdentity,
              theUser.getChaiProvider()
      );
      */

      { // execute configured actions
        LOGGER.debug(pwmSession, "executing configured actions to user " + theUser.getEntryDN());
        final List<ActionConfiguration> actions =
            pwmApplication.getConfig().readSettingAsAction(PwmSetting.GUEST_WRITE_ATTRIBUTES);
        if (actions != null && !actions.isEmpty()) {
          final MacroMachine macroMachine = MacroMachine.forUser(pwmRequest, userIdentity);

          final ActionExecutor actionExecutor =
              new ActionExecutor.ActionExecutorSettings(pwmApplication, theUser)
                  .setExpandPwmMacros(true)
                  .setMacroMachine(macroMachine)
                  .createActionExecutor();

          actionExecutor.executeActions(actions, pwmSession);
        }
      }

      // everything good so forward to success page.
      this.sendGuestUserEmailConfirmation(pwmRequest, userIdentity);

      pwmApplication.getStatisticsManager().incrementValue(Statistic.NEW_USERS);

      pwmRequest.getPwmResponse().forwardToSuccessPage(Message.Success_CreateGuest);
    } catch (ChaiOperationException e) {
      final ErrorInformation info =
          new ErrorInformation(
              PwmError.ERROR_NEW_USER_FAILURE, "error creating user: " + e.getMessage());
      pwmRequest.setResponseError(info);
      LOGGER.warn(pwmSession, info);
      this.forwardToJSP(pwmRequest, guestRegistrationBean);
    } catch (PwmOperationalException e) {
      LOGGER.error(pwmSession, e.getErrorInformation().toDebugStr());
      pwmRequest.setResponseError(e.getErrorInformation());
      this.forwardToJSP(pwmRequest, guestRegistrationBean);
    }
  }
  protected void handleUpdateRequest(
      final PwmRequest pwmRequest, final GuestRegistrationBean guestRegistrationBean)
      throws ServletException, ChaiUnavailableException, IOException, PwmUnrecoverableException {
    // Fetch the session state bean.
    final PwmSession pwmSession = pwmRequest.getPwmSession();
    final LocalSessionStateBean ssBean = pwmSession.getSessionStateBean();
    final PwmApplication pwmApplication = pwmRequest.getPwmApplication();
    final Configuration config = pwmApplication.getConfig();

    final List<FormConfiguration> formItems =
        pwmApplication.getConfig().readSettingAsForm(PwmSetting.GUEST_UPDATE_FORM);
    final String expirationAttribute =
        config.readSettingAsString(PwmSetting.GUEST_EXPIRATION_ATTRIBUTE);

    try {
      // read the values from the request
      final Map<FormConfiguration, String> formValues =
          FormUtility.readFormValuesFromRequest(pwmRequest, formItems, pwmRequest.getLocale());

      // see if the values meet form requirements.
      FormUtility.validateFormValues(config, formValues, ssBean.getLocale());

      // read current values from user.
      final ChaiUser theGuest =
          pwmSession
              .getSessionManager()
              .getActor(pwmApplication, guestRegistrationBean.getUpdateUserIdentity());

      // check unique fields against ldap
      FormUtility.validateFormValueUniqueness(
          pwmApplication,
          formValues,
          ssBean.getLocale(),
          Collections.singletonList(guestRegistrationBean.getUpdateUserIdentity()),
          false);

      final Date expirationDate = readExpirationFromRequest(pwmRequest);

      // Update user attributes
      Helper.writeFormValuesToLdap(pwmApplication, pwmSession, theGuest, formValues, false);

      // Write expirationDate
      if (expirationDate != null) {
        theGuest.writeDateAttribute(expirationAttribute, expirationDate);
      }

      // send email.
      final UserStatusReader userStatusReader =
          new UserStatusReader(pwmApplication, pwmSession.getLabel());
      final UserInfoBean guestUserInfoBean = new UserInfoBean();
      userStatusReader.populateUserInfoBean(
          guestUserInfoBean,
          pwmSession.getSessionStateBean().getLocale(),
          guestRegistrationBean.getUpdateUserIdentity(),
          theGuest.getChaiProvider());
      this.sendUpdateGuestEmailConfirmation(pwmRequest, guestUserInfoBean);

      pwmApplication.getStatisticsManager().incrementValue(Statistic.UPDATED_GUESTS);

      // everything good so forward to confirmation page.
      pwmRequest.getPwmResponse().forwardToSuccessPage(Message.Success_UpdateGuest);
      return;
    } catch (PwmOperationalException e) {
      LOGGER.error(pwmSession, e.getErrorInformation().toDebugStr());
      pwmRequest.setResponseError(e.getErrorInformation());
    } catch (ChaiOperationException e) {
      final ErrorInformation info =
          new ErrorInformation(
              PwmError.ERROR_UNKNOWN, "unexpected error writing to ldap: " + e.getMessage());
      LOGGER.error(pwmSession, info);
      pwmRequest.setResponseError(info);
    }
    this.forwardToUpdateJSP(pwmRequest, guestRegistrationBean);
  }