//    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) 2012-2020 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/>.

// OpenSSL specific methods for TLS version

#pragma once

#include <openvpn/ssl/tlsver.hpp>

namespace openvpn {
  namespace TLSVersion {

    inline int toTLSVersion(const Type version)
    {

      switch (version)
	{
	case UNDEF:
	default:
	  return 0;
	case V1_0:
	  return TLS1_VERSION;
	case V1_1:
	  return TLS1_1_VERSION;
	case V1_2:
	  return TLS1_2_VERSION;
	case V1_3:
#ifdef TLS1_3_VERSION
	  return TLS1_3_VERSION;
#else
	  // TLS 1.3 is SSL 3.4
	  return 0x0304;
#endif
	}
    }
  }
}