device/bluetooth/bluetooth_adapter_chromeos.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_CHROMEOS_H_
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_CHROMEOS_H_
   7
   8 #include <map>
   9 #include <queue>
  10 #include <string>
  11 #include <utility>
  12 #include <vector>
  13
  14 #include "base/memory/weak_ptr.h"
  15 #include "chromeos/dbus/bluetooth_adapter_client.h"
  16 #include "chromeos/dbus/bluetooth_agent_service_provider.h"
  17 #include "chromeos/dbus/bluetooth_device_client.h"
  18 #include "chromeos/dbus/bluetooth_input_client.h"
  19 #include "chromeos/dbus/bluetooth_profile_manager_client.h"
  20 #include "chromeos/dbus/bluetooth_profile_service_provider.h"
  21 #include "dbus/object_path.h"
  22 #include "device/bluetooth/bluetooth_adapter.h"
  23 #include "device/bluetooth/bluetooth_audio_sink.h"
  24 #include "device/bluetooth/bluetooth_device.h"
  25 #include "device/bluetooth/bluetooth_discovery_session.h"
  26 #include "device/bluetooth/bluetooth_export.h"
  27
  28 namespace base {
  29 class SequencedTaskRunner;
  30 }  // namespace base
  31
  32 namespace device {
  33 class BluetoothSocketThread;
  34 }  // namespace device
  35
  36 namespace chromeos {
  37
  38 class BluetoothChromeOSTest;
  39 class BluetoothAdapterProfileChromeOS;
  40 class BluetoothDeviceChromeOS;
  41 class BluetoothPairingChromeOS;
  42 class BluetoothRemoteGattCharacteristicChromeOS;
  43 class BluetoothRemoteGattDescriptorChromeOS;
  44 class BluetoothRemoteGattServiceChromeOS;
  45
  46 // The BluetoothAdapterChromeOS class implements BluetoothAdapter for the
  47 // Chrome OS platform.
  48 //
  49 // All methods are called from the dbus origin / UI thread and are generally
  50 // not assumed to be thread-safe.
  51 //
  52 // This class interacts with sockets using the BluetoothSocketThread to ensure
  53 // single-threaded calls, and posts tasks to the UI thread.
  54 //
  55 // Methods tolerate a shutdown scenario where BluetoothAdapterChromeOS::Shutdown
  56 // causes IsPresent to return false just before the dbus system is shutdown but
  57 // while references to the BluetoothAdapterChromeOS object still exists.
  58 //
  59 // When adding methods to this class verify shutdown behavior in
  60 // BluetoothChromeOSTest, Shutdown.
  61 class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterChromeOS
  62     : public device::BluetoothAdapter,
  63       public chromeos::BluetoothAdapterClient::Observer,
  64       public chromeos::BluetoothDeviceClient::Observer,
  65       public chromeos::BluetoothInputClient::Observer,
  66       public chromeos::BluetoothAgentServiceProvider::Delegate {
  67  public:
  68   typedef base::Callback<void(const std::string& error_message)>
  69       ErrorCompletionCallback;
  70   typedef base::Callback<void(BluetoothAdapterProfileChromeOS* profile)>
  71       ProfileRegisteredCallback;
  72
  73   static base::WeakPtr<BluetoothAdapter> CreateAdapter();
  74
  75   // BluetoothAdapter:
  76   void Shutdown() override;
  77   std::string GetAddress() const override;
  78   std::string GetName() const override;
  79   void SetName(const std::string& name,
  80                const base::Closure& callback,
  81                const ErrorCallback& error_callback) override;
  82   bool IsInitialized() const override;
  83   bool IsPresent() const override;
  84   bool IsPowered() const override;
  85   void SetPowered(bool powered,
  86                   const base::Closure& callback,
  87                   const ErrorCallback& error_callback) override;
  88   bool IsDiscoverable() const override;
  89   void SetDiscoverable(bool discoverable,
  90                        const base::Closure& callback,
  91                        const ErrorCallback& error_callback) override;
  92   bool IsDiscovering() const override;
  93   void CreateRfcommService(
  94       const device::BluetoothUUID& uuid,
  95       const ServiceOptions& options,
  96       const CreateServiceCallback& callback,
  97       const CreateServiceErrorCallback& error_callback) override;
  98   void CreateL2capService(
  99       const device::BluetoothUUID& uuid,
 100       const ServiceOptions& options,
 101       const CreateServiceCallback& callback,
 102       const CreateServiceErrorCallback& error_callback) override;
 103   void RegisterAudioSink(
 104       const device::BluetoothAudioSink::Options& options,
 105       const device::BluetoothAdapter::AcquiredCallback& callback,
 106       const device::BluetoothAudioSink::ErrorCallback& error_callback) override;
 107
 108   void RegisterAdvertisement(
 109       scoped_ptr<device::BluetoothAdvertisement::Data> advertisement_data,
 110       const CreateAdvertisementCallback& callback,
 111       const CreateAdvertisementErrorCallback& error_callback) override;
 112
 113   // Locates the device object by object path (the devices map and
 114   // BluetoothDevice methods are by address).
 115   BluetoothDeviceChromeOS* GetDeviceWithPath(
 116       const dbus::ObjectPath& object_path);
 117
 118   // Announces to observers a change in device state that is not reflected by
 119   // its D-Bus properties. |device| is owned by the caller and cannot be NULL.
 120   void NotifyDeviceChanged(BluetoothDeviceChromeOS* device);
 121
 122   // The following methods are used to send various GATT observer events to
 123   // observers.
 124   void NotifyGattServiceAdded(BluetoothRemoteGattServiceChromeOS* service);
 125   void NotifyGattServiceRemoved(BluetoothRemoteGattServiceChromeOS* service);
 126   void NotifyGattServiceChanged(BluetoothRemoteGattServiceChromeOS* service);
 127   void NotifyGattDiscoveryComplete(BluetoothRemoteGattServiceChromeOS* service);
 128   void NotifyGattCharacteristicAdded(
 129       BluetoothRemoteGattCharacteristicChromeOS* characteristic);
 130   void NotifyGattCharacteristicRemoved(
 131       BluetoothRemoteGattCharacteristicChromeOS* characteristic);
 132   void NotifyGattDescriptorAdded(
 133       BluetoothRemoteGattDescriptorChromeOS* descriptor);
 134   void NotifyGattDescriptorRemoved(
 135       BluetoothRemoteGattDescriptorChromeOS* descriptor);
 136   void NotifyGattCharacteristicValueChanged(
 137       BluetoothRemoteGattCharacteristicChromeOS* characteristic,
 138       const std::vector<uint8>& value);
 139   void NotifyGattDescriptorValueChanged(
 140       BluetoothRemoteGattDescriptorChromeOS* descriptor,
 141       const std::vector<uint8>& value);
 142
 143   // Returns the object path of the adapter.
 144   const dbus::ObjectPath& object_path() const { return object_path_; }
 145
 146   // Request a profile on the adapter for a custom service with a
 147   // specific UUID for the device at |device_path| to be sent to |delegate|.
 148   // If |device_path| is the empty string, incoming connections will be
 149   // assigned to |delegate|.  When the profile is
 150   // successfully registered, |success_callback| will be called with a pointer
 151   // to the profile which is managed by BluetoothAdapterChromeOS.  On failure,
 152   // |error_callback| will be called.
 153   void UseProfile(const device::BluetoothUUID& uuid,
 154                   const dbus::ObjectPath& device_path,
 155                   const BluetoothProfileManagerClient::Options& options,
 156                   BluetoothProfileServiceProvider::Delegate* delegate,
 157                   const ProfileRegisteredCallback& success_callback,
 158                   const ErrorCompletionCallback& error_callback);
 159
 160   // Release use of a profile by a device.
 161   void ReleaseProfile(const dbus::ObjectPath& device_path,
 162                       BluetoothAdapterProfileChromeOS* profile);
 163
 164  protected:
 165   // BluetoothAdapter:
 166   void RemovePairingDelegateInternal(
 167       device::BluetoothDevice::PairingDelegate* pairing_delegate) override;
 168
 169  private:
 170   friend class BluetoothChromeOSTest;
 171   friend class BluetoothChromeOSTest_Shutdown_Test;
 172   friend class BluetoothChromeOSTest_Shutdown_OnStartDiscovery_Test;
 173   friend class BluetoothChromeOSTest_Shutdown_OnStartDiscoveryError_Test;
 174   friend class BluetoothChromeOSTest_Shutdown_OnStopDiscovery_Test;
 175   friend class BluetoothChromeOSTest_Shutdown_OnStopDiscoveryError_Test;
 176
 177   // typedef for callback parameters that are passed to AddDiscoverySession
 178   // and RemoveDiscoverySession. This is used to queue incoming requests while
 179   // a call to BlueZ is pending.
 180   typedef std::tuple<device::BluetoothDiscoveryFilter*,
 181                      base::Closure,
 182                      ErrorCallback> DiscoveryParamTuple;
 183   typedef std::queue<DiscoveryParamTuple> DiscoveryCallbackQueue;
 184
 185   // Callback pair for the profile registration queue.
 186   typedef std::pair<base::Closure, ErrorCompletionCallback>
 187       RegisterProfileCompletionPair;
 188
 189   BluetoothAdapterChromeOS();
 190   ~BluetoothAdapterChromeOS() override;
 191
 192   // BluetoothAdapterClient::Observer override.
 193   void AdapterAdded(const dbus::ObjectPath& object_path) override;
 194   void AdapterRemoved(const dbus::ObjectPath& object_path) override;
 195   void AdapterPropertyChanged(const dbus::ObjectPath& object_path,
 196                               const std::string& property_name) override;
 197
 198   // BluetoothDeviceClient::Observer override.
 199   void DeviceAdded(const dbus::ObjectPath& object_path) override;
 200   void DeviceRemoved(const dbus::ObjectPath& object_path) override;
 201   void DevicePropertyChanged(const dbus::ObjectPath& object_path,
 202                              const std::string& property_name) override;
 203
 204   // BluetoothInputClient::Observer override.
 205   void InputPropertyChanged(const dbus::ObjectPath& object_path,
 206                             const std::string& property_name) override;
 207
 208   // BluetoothAgentServiceProvider::Delegate override.
 209   void Released() override;
 210   void RequestPinCode(const dbus::ObjectPath& device_path,
 211                       const PinCodeCallback& callback) override;
 212   void DisplayPinCode(const dbus::ObjectPath& device_path,
 213                       const std::string& pincode) override;
 214   void RequestPasskey(const dbus::ObjectPath& device_path,
 215                       const PasskeyCallback& callback) override;
 216   void DisplayPasskey(const dbus::ObjectPath& device_path,
 217                       uint32 passkey,
 218                       uint16 entered) override;
 219   void RequestConfirmation(const dbus::ObjectPath& device_path,
 220                            uint32 passkey,
 221                            const ConfirmationCallback& callback) override;
 222   void RequestAuthorization(const dbus::ObjectPath& device_path,
 223                             const ConfirmationCallback& callback) override;
 224   void AuthorizeService(const dbus::ObjectPath& device_path,
 225                         const std::string& uuid,
 226                         const ConfirmationCallback& callback) override;
 227   void Cancel() override;
 228
 229   // Called by dbus:: on completion of the D-Bus method call to register the
 230   // pairing agent.
 231   void OnRegisterAgent();
 232   void OnRegisterAgentError(const std::string& error_name,
 233                             const std::string& error_message);
 234
 235   // Called by dbus:: on completion of the D-Bus method call to request that
 236   // the pairing agent be made the default.
 237   void OnRequestDefaultAgent();
 238   void OnRequestDefaultAgentError(const std::string& error_name,
 239                                   const std::string& error_message);
 240
 241   // Called by BluetoothAudioSinkChromeOS on completion of registering an audio
 242   // sink.
 243   void OnRegisterAudioSink(
 244       const device::BluetoothAdapter::AcquiredCallback& callback,
 245       const device::BluetoothAudioSink::ErrorCallback& error_callback,
 246       scoped_refptr<device::BluetoothAudioSink> audio_sink);
 247
 248   // Internal method to obtain a BluetoothPairingChromeOS object for the device
 249   // with path |object_path|. Returns the existing pairing object if the device
 250   // already has one (usually an outgoing connection in progress) or a new
 251   // pairing object with the default pairing delegate if not. If no default
 252   // pairing object exists, NULL will be returned.
 253   BluetoothPairingChromeOS* GetPairing(const dbus::ObjectPath& object_path);
 254
 255   // Set the tracked adapter to the one in |object_path|, this object will
 256   // subsequently operate on that adapter until it is removed.
 257   void SetAdapter(const dbus::ObjectPath& object_path);
 258
 259   // Set the adapter name to one chosen from the system information.
 260   void SetDefaultAdapterName();
 261
 262   // Remove the currently tracked adapter. IsPresent() will return false after
 263   // this is called.
 264   void RemoveAdapter();
 265
 266   // Announce to observers a change in the adapter state.
 267   void PoweredChanged(bool powered);
 268   void DiscoverableChanged(bool discoverable);
 269   void DiscoveringChanged(bool discovering);
 270   void PresentChanged(bool present);
 271
 272   // Called by dbus:: on completion of the discoverable property change.
 273   void OnSetDiscoverable(const base::Closure& callback,
 274                          const ErrorCallback& error_callback,
 275                          bool success);
 276
 277   // Called by dbus:: on completion of an adapter property change.
 278   void OnPropertyChangeCompleted(const base::Closure& callback,
 279                                  const ErrorCallback& error_callback,
 280                                  bool success);
 281
 282   // BluetoothAdapter:
 283   void AddDiscoverySession(device::BluetoothDiscoveryFilter* discovery_filter,
 284                            const base::Closure& callback,
 285                            const ErrorCallback& error_callback) override;
 286   void RemoveDiscoverySession(
 287       device::BluetoothDiscoveryFilter* discovery_filter,
 288       const base::Closure& callback,
 289       const ErrorCallback& error_callback) override;
 290   void SetDiscoveryFilter(
 291       scoped_ptr<device::BluetoothDiscoveryFilter> discovery_filter,
 292       const base::Closure& callback,
 293       const ErrorCallback& error_callback) override;
 294
 295   // Called by dbus:: on completion of the D-Bus method call to start discovery.
 296   void OnStartDiscovery(const base::Closure& callback,
 297                         const ErrorCallback& error_callback);
 298   void OnStartDiscoveryError(const base::Closure& callback,
 299                              const ErrorCallback& error_callback,
 300                              const std::string& error_name,
 301                              const std::string& error_message);
 302
 303   // Called by dbus:: on completion of the D-Bus method call to stop discovery.
 304   void OnStopDiscovery(const base::Closure& callback);
 305   void OnStopDiscoveryError(const ErrorCallback& error_callback,
 306                             const std::string& error_name,
 307                             const std::string& error_message);
 308
 309   void OnPreSetDiscoveryFilter(const base::Closure& callback,
 310                                const ErrorCallback& error_callback);
 311   void OnPreSetDiscoveryFilterError(const base::Closure& callback,
 312                                     const ErrorCallback& error_callback);
 313   void OnSetDiscoveryFilter(const base::Closure& callback,
 314                             const ErrorCallback& error_callback);
 315   void OnSetDiscoveryFilterError(const base::Closure& callback,
 316                                  const ErrorCallback& error_callback,
 317                                  const std::string& error_name,
 318                                  const std::string& error_message);
 319
 320   // Called by dbus:: on completion of the D-Bus method to register a profile.
 321   void OnRegisterProfile(const device::BluetoothUUID& uuid,
 322                          scoped_ptr<BluetoothAdapterProfileChromeOS> profile);
 323
 324   void SetProfileDelegate(const device::BluetoothUUID& uuid,
 325                           const dbus::ObjectPath& device_path,
 326                           BluetoothProfileServiceProvider::Delegate* delegate,
 327                           const ProfileRegisteredCallback& success_callback,
 328                           const ErrorCompletionCallback& error_callback);
 329   void OnRegisterProfileError(const device::BluetoothUUID& uuid,
 330                               const std::string& error_name,
 331                               const std::string& error_message);
 332
 333   // Called by BluetoothAdapterProfileChromeOS when no users of a profile
 334   // remain.
 335   void RemoveProfile(const device::BluetoothUUID& uuid);
 336
 337   // Processes the queued discovery requests. For each DiscoveryParamTuple in
 338   // the queue, this method will try to add a new discovery session. This method
 339   // is called whenever a pending D-Bus call to start or stop discovery has
 340   // ended (with either success or failure).
 341   void ProcessQueuedDiscoveryRequests();
 342
 343   // Set in |Shutdown()|, makes IsPresent()| return false.
 344   bool dbus_is_shutdown_;
 345
 346   // Number of discovery sessions that have been added.
 347   int num_discovery_sessions_;
 348
 349   // True, if there is a pending request to start or stop discovery.
 350   bool discovery_request_pending_;
 351
 352   // List of queued requests to add new discovery sessions. While there is a
 353   // pending request to BlueZ to start or stop discovery, many requests from
 354   // within Chrome to start or stop discovery sessions may occur. We only
 355   // queue requests to add new sessions to be processed later. All requests to
 356   // remove a session while a call is pending immediately return failure. Note
 357   // that since BlueZ keeps its own reference count of applications that have
 358   // requested discovery, dropping our count to 0 won't necessarily result in
 359   // the controller actually stopping discovery if, for example, an application
 360   // other than Chrome, such as bt_console, was also used to start discovery.
 361   DiscoveryCallbackQueue discovery_request_queue_;
 362
 363   // Object path of the adapter we track.
 364   dbus::ObjectPath object_path_;
 365
 366   // Instance of the D-Bus agent object used for pairing, initialized with
 367   // our own class as its delegate.
 368   scoped_ptr<BluetoothAgentServiceProvider> agent_;
 369
 370   // UI thread task runner and socket thread object used to create sockets.
 371   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
 372   scoped_refptr<device::BluetoothSocketThread> socket_thread_;
 373
 374   // The profiles we have registered with the bluetooth daemon.
 375   std::map<device::BluetoothUUID, BluetoothAdapterProfileChromeOS*> profiles_;
 376
 377   // Queue of delegates waiting for a profile to register.
 378   std::map<device::BluetoothUUID, std::vector<RegisterProfileCompletionPair>*>
 379       profile_queues_;
 380
 381   scoped_ptr<device::BluetoothDiscoveryFilter> current_filter_;
 382
 383   // Note: This should remain the last member so it'll be destroyed and
 384   // invalidate its weak pointers before any other members are destroyed.
 385   base::WeakPtrFactory<BluetoothAdapterChromeOS> weak_ptr_factory_;
 386
 387   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterChromeOS);
 388 };
 389
 390 }  // namespace chromeos
 391
 392 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_CHROMEOS_H_