security.hh

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/*
 * libkeepass - KeePass key database importer/exporter
 * Copyright (C) 2014 Christian Kindahl
 * Copyright (C) 2024 Dominik Krümpelmann
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
namespace keepass {
 
template <typename T> class protect {
private:
  T value_;                
  bool protected_ = false; 
 
public:
  protect() = default;
 
  protect(const T& val, bool prot) : value_(val), protected_(prot) {}
 
  protect(T&& val, bool prot) : value_(std::move(val)), protected_(prot) {}
 
  protect(const protect<T>& other) {
    value_ = other.value_;
    protected_ = other.protected_;
  }
 
  protect(protect<T>&& other) noexcept {
    value_ = std::move(other.value_);
    protected_ = other.protected_;
  }
 
  bool is_protected() const { return protected_; }
 
  void set_protected(bool prot) { protected_ = prot; }
 
  const T& value() const { return value_; }
 
  void set_value(const T& val) { value_ = val; }
 
  protect<T>& operator=(const protect<T>&) = default;
 
  protect<T>& operator=(protect<T>&& other) noexcept {
    value_ = std::move(other.value_);
    protected_ = other.protected_;
    return *this;
  }
 
  explicit operator const T&() const { return value_; }
 
  const T* operator->() const { return &value_; }
 
  const T& operator*() const { return value_; }
 
  bool operator==(const protect<T>& other) const {
    return value_ == other.value_ && protected_ == other.protected_;
  }
 
  bool operator!=(const protect<T>& other) const { return !(*this == other); }
};
 
} // namespace keepass