1 // 2 // Copyright (C) 2014 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_PROXY_H_ 18 #define TRUNKS_TRUNKS_DBUS_PROXY_H_ 19 20 #include <string> 21 22 #include <base/memory/weak_ptr.h> 23 #include <base/threading/platform_thread.h> 24 #include <dbus/bus.h> 25 #include <dbus/object_proxy.h> 26 27 #include "trunks/command_transceiver.h" 28 #include "trunks/trunks_export.h" 29 30 namespace trunks { 31 32 // TrunksDBusProxy is a CommandTransceiver implementation that forwards all 33 // commands to the trunksd D-Bus daemon. See TrunksDBusService for details on 34 // how the commands are handled once they reach trunksd. A TrunksDBusProxy 35 // instance must be used in only one thread. 36 class TRUNKS_EXPORT TrunksDBusProxy: public CommandTransceiver { 37 public: 38 TrunksDBusProxy(); 39 ~TrunksDBusProxy() override; 40 41 // Initializes the D-Bus client. Returns true on success. 42 bool Init() override; 43 44 // CommandTransceiver methods. 45 void SendCommand(const std::string& command, 46 const ResponseCallback& callback) override; 47 std::string SendCommandAndWait(const std::string& command) override; 48 49 private: 50 base::WeakPtr<TrunksDBusProxy> GetWeakPtr() { 51 return weak_factory_.GetWeakPtr(); 52 } 53 54 base::PlatformThreadId origin_thread_id_; 55 scoped_refptr<dbus::Bus> bus_; 56 dbus::ObjectProxy* object_proxy_; 57 58 // Declared last so weak pointers are invalidated first on destruction. 59 base::WeakPtrFactory<TrunksDBusProxy> weak_factory_; 60 61 DISALLOW_COPY_AND_ASSIGN(TrunksDBusProxy); 62 }; 63 64 } // namespace trunks 65 66 #endif // TRUNKS_TRUNKS_DBUS_PROXY_H_ 67
