//    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 Technologies, Inc.
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program in the COPYING file.
//    If not, see <http://www.gnu.org/licenses/>.

// registry utilities for Windows

#ifndef OPENVPN_WIN_REG_H
#define OPENVPN_WIN_REG_H

#include <windows.h>
#include <openvpn/common/size.hpp>

namespace openvpn {
  namespace Win {

    // HKEY wrapper
    class RegKey
    {
      RegKey(const RegKey&) = delete;
      RegKey& operator=(const RegKey&) = delete;

    public:
      RegKey() : key(nullptr) {}
      bool defined() const { return key != nullptr; }
      HKEY* ref() { return &key; }
      HKEY operator()() { return key; }

      ~RegKey()
      {
	if (defined())
	  ::RegCloseKey(key);
      }
    private:
      HKEY key;
    };

  }
}

#endif
