discourse/lib/validators/pop3_polling_enabled_setting_validator.rb

# frozen_string_literal: true

require "net/pop"

class POP3PollingEnabledSettingValidator

  def initialize(opts = {})
    @opts = opts
  end

  def valid_value?(val)
    # only validate when enabling polling
    return true if val == "f"
    # ensure we can authenticate
    SiteSetting.pop3_polling_host.present? &&
    SiteSetting.pop3_polling_username.present? &&
    SiteSetting.pop3_polling_password.present? &&
    authentication_works?
  end

  def error_message
    if SiteSetting.pop3_polling_host.blank?
      I18n.t("site_settings.errors.pop3_polling_host_is_empty")
    elsif SiteSetting.pop3_polling_username.blank?
      I18n.t("site_settings.errors.pop3_polling_username_is_empty")
    elsif SiteSetting.pop3_polling_password.blank?
      I18n.t("site_settings.errors.pop3_polling_password_is_empty")
    elsif !authentication_works?
      I18n.t("site_settings.errors.pop3_polling_authentication_failed")
    end
  end

  private

  def authentication_works?
    @authentication_works ||= begin
      EmailSettingsValidator.validate_pop3(
        host: SiteSetting.pop3_polling_host,
        port: SiteSetting.pop3_polling_port,
        ssl: SiteSetting.pop3_polling_ssl,
        username: SiteSetting.pop3_polling_username,
        password: SiteSetting.pop3_polling_password,
        openssl_verify: SiteSetting.pop3_polling_openssl_verify
      )
    rescue *EmailSettingsExceptionHandler::EXPECTED_EXCEPTIONS => err
      false
    else
      true
    end
  end
end