//    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/>.

// Automatically reset a target object when
// AutoReset goes out of scope.

#ifndef OPENVPN_COMMON_AUTORESET_H
#define OPENVPN_COMMON_AUTORESET_H

namespace openvpn {

  template <typename T>
  class AutoReset
  {
  public:
    AutoReset(T& obj)
      : obj_(&obj)
    {}

    ~AutoReset()
    {
      if (obj_)
	obj_->reset();
    }

    void disarm()
    {
      obj_ = nullptr;
    }

  private:
    T* obj_;
  };

}

#endif