//    OpenVPN -- An application to securely tunnel IP networks
//               over a single port, with support for SSL/TLS-based
//               session authentication and key exchange,
//               packet encryption, packet authentication, and
//               packet compression.
//
//    Copyright (C) 2012-2017 OpenVPN Inc.
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU Affero General Public License Version 3
//    as published by the Free Software Foundation.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU Affero General Public License for more details.
//
//    You should have received a copy of the GNU Affero General Public License
//    along with this program in the COPYING file.
//    If not, see <http://www.gnu.org/licenses/>.

#ifndef OPENVPN_TUN_EXTERN_FW_H
#define OPENVPN_TUN_EXTERN_FW_H

namespace openvpn {

#if defined(OPENVPN_EXTERNAL_TUN_FACTORY)

  struct TunClientFactory;
  class OptionList;

  namespace ExternalTun {
    struct Config;   // defined in config.hpp
    struct Factory
    {
      virtual TunClientFactory* new_tun_factory(const Config& conf, const OptionList& opt) = 0;
      virtual ~Factory() {}
    };
  }

#else

  namespace ExternalTun {
    struct Factory {};
  }

#endif
}
#endif
