1//
2// Copyright (C) 2016 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#ifndef TRUNKS_TRUNKS_DBUS_SERVICE_H_
18#define TRUNKS_TRUNKS_DBUS_SERVICE_H_
19
20#include <memory>
21#include <string>
22
23#include <base/memory/weak_ptr.h>
24#include <brillo/daemons/dbus_daemon.h>
25#include <brillo/dbus/dbus_method_response.h>
26#include <brillo/dbus/dbus_object.h>
27
28#include "trunks/command_transceiver.h"
29#include "trunks/interface.pb.h"
30
31namespace trunks {
32
33// TrunksDBusService registers for and handles all incoming D-Bus messages for
34// the trunksd system daemon.
35//
36// Example Usage:
37//
38// TrunksDBusService service;
39// service.set_transceiver(&my_transceiver);
40// service.Run();
41class TrunksDBusService : public brillo::DBusServiceDaemon {
42 public:
43  TrunksDBusService();
44  ~TrunksDBusService() override = default;
45
46  // The |transceiver| will be the target of all incoming TPM commands. This
47  // class does not take ownership of |transceiver|.
48  void set_transceiver(CommandTransceiver* transceiver) {
49    transceiver_ = transceiver;
50  }
51
52 protected:
53  // Exports D-Bus methods.
54  void RegisterDBusObjectsAsync(
55      brillo::dbus_utils::AsyncEventSequencer* sequencer) override;
56
57 private:
58  // Handles calls to the 'SendCommand' method.
59  void HandleSendCommand(std::unique_ptr<brillo::dbus_utils::DBusMethodResponse<
60                             const SendCommandResponse&>> response_sender,
61                         const SendCommandRequest& request);
62
63  base::WeakPtr<TrunksDBusService> GetWeakPtr() {
64    return weak_factory_.GetWeakPtr();
65  }
66
67  std::unique_ptr<brillo::dbus_utils::DBusObject> trunks_dbus_object_;
68  CommandTransceiver* transceiver_ = nullptr;
69
70  // Declared last so weak pointers are invalidated first on destruction.
71  base::WeakPtrFactory<TrunksDBusService> weak_factory_{this};
72  DISALLOW_COPY_AND_ASSIGN(TrunksDBusService);
73};
74
75}  // namespace trunks
76
77#endif  // TRUNKS_TRUNKS_DBUS_SERVICE_H_
78