// Copyright 2018 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CRYPTOHOME_KEY_CHALLENGE_SERVICE_IMPL_H_
#define CRYPTOHOME_KEY_CHALLENGE_SERVICE_IMPL_H_

#include <string>

#include <base/macros.h>
#include <base/memory/ref_counted.h>

#include "cryptohome/key_challenge_service.h"
#include "cryptohome/rpc.pb.h"

#include "cryptohome_key_delegate/dbus-proxies.h"

namespace dbus {
class Bus;
}  // namespace dbus

namespace cryptohome {

// Real implementation of the KeyChallengeService interface that uses D-Bus for
// making key challenge requests to the specified service.
class KeyChallengeServiceImpl final : public KeyChallengeService {
 public:
  // |key_delegate_dbus_service_name| is the D-Bus service name that implements
  // the org.chromium.CryptohomeKeyDelegateInterface interface.
  KeyChallengeServiceImpl(scoped_refptr<dbus::Bus> dbus_bus,
                          const std::string& key_delegate_dbus_service_name);

  ~KeyChallengeServiceImpl() override;

  // KeyChallengeService overrides:
  void ChallengeKey(const AccountIdentifier& account_id,
                    const KeyChallengeRequest& key_challenge_request,
                    ResponseCallback response_callback) override;

 private:
  const std::string key_delegate_dbus_service_name_;
  org::chromium::CryptohomeKeyDelegateInterfaceProxy dbus_proxy_;

  DISALLOW_COPY_AND_ASSIGN(KeyChallengeServiceImpl);
};

}  // namespace cryptohome

#endif  // CRYPTOHOME_KEY_CHALLENGE_SERVICE_IMPL_H_