//    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) 2012-2022 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()
    {
    }
};
} // namespace ExternalTun

#else

namespace ExternalTun {
struct Factory
{
};
} // namespace ExternalTun

#endif
} // namespace openvpn
#endif
