virtual int Add(const std::string & login, const ADMIN * admin) = 0;
virtual int Del(const std::string & login, const ADMIN * admin) = 0;
virtual int Change(const ADMIN_CONF & ac, const ADMIN * admin) = 0;
virtual int Add(const std::string & login, const ADMIN * admin) = 0;
virtual int Del(const std::string & login, const ADMIN * admin) = 0;
virtual int Change(const ADMIN_CONF & ac, const ADMIN * admin) = 0;