Add bluetooth host and controller delegates for pairing.

components/pairing/bluetooth_controller_pairing_controller.h

Index: components/pairing/bluetooth_controller_pairing_controller.h
diff --git a/components/pairing/bluetooth_controller_pairing_controller.h b/components/pairing/bluetooth_controller_pairing_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..cc38b077b242f6c16e9bea76a093aadd05626443
--- /dev/null
+++ b/components/pairing/bluetooth_controller_pairing_controller.h
@@ -0,0 +1,122 @@
+// Copyright 2014 The Chromium 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 CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_
+#define CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_
+
+#include <set>
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "components/pairing/controller_pairing_controller.h"
+#include "components/pairing/proto_decoder.h"
+#include "device/bluetooth/bluetooth_adapter.h"
+#include "device/bluetooth/bluetooth_device.h"
+#include "device/bluetooth/bluetooth_socket.h"
+
+namespace net {
+class IOBuffer;
+}
+
+namespace pairing_chromeos {
+
+class BluetoothControllerPairingController
+    : public ControllerPairingController,
+      public ProtoDecoder::Observer,
+      public device::BluetoothAdapter::Observer,
+      public device::BluetoothDevice::PairingDelegate  {
+ public:
+  BluetoothControllerPairingController();
+  virtual ~BluetoothControllerPairingController();
+
+ private:
+  void ChangeStage(Stage new_stage);
+  void Reset();
+  void DeviceFound(device::BluetoothDevice* device);
+  void DeviceLost(device::BluetoothDevice* device);
+
+  void OnSetPowered();
+  void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
+  void OnStartDiscoverySession(
+      scoped_ptr<device::BluetoothDiscoverySession> discovery_session);
+  void OnConnect();
+  void OnConnectToService(scoped_refptr<device::BluetoothSocket> socket);
+  void OnSendComplete(int bytes_sent);
+  void OnReceiveComplete(int bytes, scoped_refptr<net::IOBuffer> io_buffer);
+
+  void OnError();
+  void OnErrorWithMessage(const std::string& message);
+  void OnConnectError(device::BluetoothDevice::ConnectErrorCode error_code);
+  void OnReceiveError(device::BluetoothSocket::ErrorReason reason,
+                      const std::string& error_message);
+
+  // ControllerPairingController:
+  virtual void AddObserver(
+      ControllerPairingController::Observer* observer) OVERRIDE;
+  virtual void RemoveObserver(
+      ControllerPairingController::Observer* observer) OVERRIDE;
+  virtual Stage GetCurrentStage() OVERRIDE;
+  virtual void StartPairing() OVERRIDE;
+  virtual DeviceIdList GetDiscoveredDevices() OVERRIDE;
+  virtual void ChooseDeviceForPairing(const std::string& device_id) OVERRIDE;
+  virtual void RepeatDiscovery() OVERRIDE;
+  virtual std::string GetConfirmationCode() OVERRIDE;
+  virtual void SetConfirmationCodeIsCorrect(bool correct) OVERRIDE;
+  virtual void OnAuthenticationDone(
+      const chromeos::UserContext& user_context,
+      content::BrowserContext* browser_context) OVERRIDE;
+  virtual void StartSession() OVERRIDE;
+
+  // ProtoDecoder::Observer:
+  virtual void OnHostStatusMessage(
+      const pairing_api::HostStatus& message) OVERRIDE;
+  virtual void OnConfigureHostMessage(
+      const pairing_api::ConfigureHost& message) OVERRIDE;
+  virtual void OnPairDevicesMessage(
+      const pairing_api::PairDevices& message) OVERRIDE;
+  virtual void OnCompleteSetupMessage(
+      const pairing_api::CompleteSetup& message) OVERRIDE;
+  virtual void OnErrorMessage(const pairing_api::Error& message) OVERRIDE;
+
+  // BluetoothAdapter::Observer:
+  virtual void DeviceAdded(device::BluetoothAdapter* adapter,
+                           device::BluetoothDevice* device) OVERRIDE;
+  virtual void DeviceRemoved(device::BluetoothAdapter* adapter,
+                             device::BluetoothDevice* device) OVERRIDE;
+
+  // device::BluetoothDevice::PairingDelegate:
+  virtual void RequestPinCode(device::BluetoothDevice* device) OVERRIDE;
+  virtual void RequestPasskey(device::BluetoothDevice* device) OVERRIDE;
+  virtual void DisplayPinCode(device::BluetoothDevice* device,
+                              const std::string& pincode) OVERRIDE;
+  virtual void DisplayPasskey(device::BluetoothDevice* device,
+                              uint32 passkey) OVERRIDE;
+  virtual void KeysEntered(device::BluetoothDevice* device,
+                           uint32 entered) OVERRIDE;
+  virtual void ConfirmPasskey(device::BluetoothDevice* device,
+                              uint32 passkey) OVERRIDE;
+  virtual void AuthorizePairing(device::BluetoothDevice* device) OVERRIDE;
+
+  base::WeakPtrFactory<BluetoothControllerPairingController> ptr_factory_;

[achuithb, 2014/08/20 21:52:33]

I believe this should be the last member of this list. You want the ptr factory
to be destructed first.

[Zachary Kuznia, 2014/08/21 00:42:07]

Done.

+  ObserverList<ControllerPairingController::Observer> observers_;

[achuithb, 2014/08/20 21:52:33]

I would also move this further down the list, maybe second last, since it's more
of an implementation detail.

[Zachary Kuznia, 2014/08/21 00:42:07]

Done.

+
+  Stage current_stage_;
+  bool got_initial_status_;
+  scoped_refptr<device::BluetoothAdapter> adapter_;
+  scoped_ptr<device::BluetoothDiscoverySession> discovery_session_;
+  device::BluetoothDevice* device_;

[achuithb, 2014/08/20 21:52:33]

What is the expected lifetime of device_? This naked pointer could be a source
of crashes and security issues

[Zachary Kuznia, 2014/08/21 00:42:07]

Storing the device id instead of the device pointer now.

+  scoped_refptr<device::BluetoothSocket> socket_;
+
+  std::string confirmation_code_;
+  std::set<std::string> discovered_devices_;
+
+  scoped_ptr<ProtoDecoder> proto_decoder_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothControllerPairingController);
+};
+
+}  // namespace pairing_chromeos
+
+#endif  // CHROMEOS_PAIRING_BLUETOOTH_CONTROLLER_PAIRING_FLOW_H_