server/dbus_service.h

//
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef TPM_MANAGER_SERVER_DBUS_SERVICE_H_
#define TPM_MANAGER_SERVER_DBUS_SERVICE_H_

#include <memory>

#include <chromeos/dbus/dbus_method_response.h>
#include <chromeos/dbus/dbus_object.h>
#include <dbus/bus.h>

#include "tpm_manager/common/tpm_manager_interface.h"

namespace tpm_manager {

using CompletionAction =
    chromeos::dbus_utils::AsyncEventSequencer::CompletionAction;

// Handles D-Bus communtion with the TpmManager daemon.
class DBusService {
 public:
  // Does not take ownership of |service|. |service| must remain valid for the
  // lifetime of this instance.
  DBusService(const scoped_refptr<dbus::Bus>& bus,
              TpmManagerInterface* service);
  virtual ~DBusService() = default;

  // Connects to D-Bus system bus and exports TpmManager methods.
  void Register(const CompletionAction& callback);

  void set_service(TpmManagerInterface* service) {
    service_ = service;
  }

 private:
  friend class DBusServiceTest;

  // Handles the GetTpmStatus D-Bus call.
  void HandleGetTpmStatus(
      std::unique_ptr<chromeos::dbus_utils::DBusMethodResponse<
          const GetTpmStatusReply&>> response,
      const GetTpmStatusRequest& request);

  // Handles the TakeOwnership D-Bus call.
  void HandleTakeOwnership(
      std::unique_ptr<chromeos::dbus_utils::DBusMethodResponse<
          const TakeOwnershipReply&>> response,
      const TakeOwnershipRequest& request);

  chromeos::dbus_utils::DBusObject dbus_object_;
  TpmManagerInterface* service_;
  DISALLOW_COPY_AND_ASSIGN(DBusService);
};

}  // namespace tpm_manager

#endif  // TPM_MANAGER_SERVER_DBUS_SERVICE_H_