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// Copyright 2013 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.
#include <IOKit/IOReturn.h>
#include <memory>
#include <string>
#include <vector>
#include "base/containers/hash_tables.h"
#include "base/mac/scoped_nsobject.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/single_thread_task_runner.h"
#include "device/bluetooth/bluetooth_adapter.h"
#include "device/bluetooth/bluetooth_discovery_manager_mac.h"
#include "device/bluetooth/bluetooth_export.h"
#include "device/bluetooth/bluetooth_low_energy_advertisement_manager_mac.h"
#include "device/bluetooth/bluetooth_low_energy_device_mac.h"
#include "device/bluetooth/bluetooth_low_energy_discovery_manager_mac.h"
#include "device/bluetooth/bluetooth_uuid.h"
@class CBUUID;
@class IOBluetoothDevice;
@class NSArray;
@class NSDate;
@class BluetoothAdvertisementMac;
@class BluetoothLowEnergyCentralManagerDelegate;
@class BluetoothLowEnergyPeripheralManagerDelegate;
namespace device {
// The 10.13 SDK deprecates the CBCentralManagerState enum, but marks the
// replacement enum with limited availability, making it unusable. API methods
// now return the new enum, so to compare enum values the new enum must be cast.
// Wrap this in a function to obtain the state via a call to [manager state] to
// avoid code that would use the replacement enum and trigger warnings.
CBCentralManagerState GetCBManagerState(CBCentralManager* manager);
class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterMac
: public BluetoothAdapter,
public BluetoothDiscoveryManagerMac::Observer,
public BluetoothLowEnergyDiscoveryManagerMac::Observer {
static base::WeakPtr<BluetoothAdapterMac> CreateAdapter();
static base::WeakPtr<BluetoothAdapterMac> CreateAdapterForTest(
std::string name,
std::string address,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
// Converts CBUUID into BluetoothUUID
static BluetoothUUID BluetoothUUIDWithCBUUID(CBUUID* UUID);
// Converts NSError to string for logging.
static std::string String(NSError* error);
// BluetoothAdapter overrides:
std::string GetAddress() const override;
std::string GetName() const override;
void SetName(const std::string& name,
const base::Closure& callback,
const ErrorCallback& error_callback) override;
bool IsInitialized() const override;
bool IsPresent() const override;
bool IsPowered() const override;
bool IsDiscoverable() const override;
void SetDiscoverable(bool discoverable,
const base::Closure& callback,
const ErrorCallback& error_callback) override;
bool IsDiscovering() const override;
std::unordered_map<BluetoothDevice*, BluetoothDevice::UUIDSet>
const BluetoothDiscoveryFilter& discovery_filter) override;
UUIDList GetUUIDs() const override;
void CreateRfcommService(
const BluetoothUUID& uuid,
const ServiceOptions& options,
const CreateServiceCallback& callback,
const CreateServiceErrorCallback& error_callback) override;
void CreateL2capService(
const BluetoothUUID& uuid,
const ServiceOptions& options,
const CreateServiceCallback& callback,
const CreateServiceErrorCallback& error_callback) override;
void RegisterAdvertisement(
std::unique_ptr<BluetoothAdvertisement::Data> advertisement_data,
const CreateAdvertisementCallback& callback,
const AdvertisementErrorCallback& error_callback) override;
BluetoothLocalGattService* GetGattService(
const std::string& identifier) const override;
// BluetoothDiscoveryManagerMac::Observer overrides:
void ClassicDeviceFound(IOBluetoothDevice* device) override;
void ClassicDiscoveryStopped(bool unexpected) override;
// Registers that a new |device| has connected to the local host.
void DeviceConnected(IOBluetoothDevice* device);
// We only use CoreBluetooth when OS X >= 10.10. This because the
// CBCentralManager destructor was found to crash on the mac_chromium_rel_ng
// builder running 10.9.5. May also cause blued to crash on OS X 10.9.5
// (
static bool IsLowEnergyAvailable();
// Creates a GATT connection by calling CoreBluetooth APIs.
void CreateGattConnection(BluetoothLowEnergyDeviceMac* device_mac);
// Closes the GATT connection by calling CoreBluetooth APIs.
void DisconnectGatt(BluetoothLowEnergyDeviceMac* device_mac);
// Methods called from CBCentralManager delegate.
void DidConnectPeripheral(CBPeripheral* peripheral);
void DidFailToConnectPeripheral(CBPeripheral* peripheral, NSError* error);
void DidDisconnectPeripheral(CBPeripheral* peripheral, NSError* error);
// BluetoothAdapter override:
bool SetPoweredImpl(bool powered) override;
void RemovePairingDelegateInternal(
device::BluetoothDevice::PairingDelegate* pairing_delegate) override;
// Struct bundling information about the state of the HostController.
struct HostControllerState {
bool is_present = false;
bool classic_powered = false;
std::string address;
// Typedef for function returning the state of the HostController.
using HostControllerStateFunction =
// Type of the underlying implementation of SetPowered(). It takes an int
// instead of a bool, since the production code calls into a C API that does
// not know about bool.
using SetControllerPowerStateFunction = base::RepeatingCallback<void(int)>;
// Queries the state of the IOBluetoothHostController.
HostControllerState GetHostControllerState();
// Resets |low_energy_central_manager_| to |central_manager| and sets
// |low_energy_central_manager_delegate_| as the manager's delegate. Should
// be called only when |IsLowEnergyAvailable()|.
void SetCentralManagerForTesting(CBCentralManager* central_manager);
// Returns the CBCentralManager instance.
CBCentralManager* GetCentralManager();
// Returns the CBPeripheralManager instance.
CBPeripheralManager* GetPeripheralManager();
// Allow the mocking out of getting the HostController state for testing.
void SetHostControllerStateFunctionForTesting(
HostControllerStateFunction controller_state_function);
// Allow the mocking out of setting the controller power state for testing.
void SetPowerStateFunctionForTesting(
SetControllerPowerStateFunction power_state_function);
// The length of time that must elapse since the last Inquiry response (on
// Classic devices) or call to BluetoothLowEnergyDevice::Update() (on Low
// Energy) before a discovered device is considered to be no longer available.
const static NSTimeInterval kDiscoveryTimeoutSec;
friend class BluetoothTestMac;
friend class BluetoothAdapterMacTest;
friend class BluetoothLowEnergyCentralManagerBridge;
friend class BluetoothLowEnergyPeripheralManagerBridge;
~BluetoothAdapterMac() override;
// BluetoothAdapter overrides:
void AddDiscoverySession(
BluetoothDiscoveryFilter* discovery_filter,
const base::Closure& callback,
DiscoverySessionErrorCallback error_callback) override;
void RemoveDiscoverySession(
BluetoothDiscoveryFilter* discovery_filter,
const base::Closure& callback,
DiscoverySessionErrorCallback error_callback) override;
void SetDiscoveryFilter(
std::unique_ptr<BluetoothDiscoveryFilter> discovery_filter,
const base::Closure& callback,
DiscoverySessionErrorCallback error_callback) override;
// Start classic and/or low energy discovery sessions, according to the
// filter. If a discovery session is already running the filter is updated.
bool StartDiscovery(BluetoothDiscoveryFilter* discovery_filter);
void Init();
void InitForTest(scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner);
void PollAdapter();
// Registers that a new |device| has replied to an Inquiry, is paired, or has
// connected to the local host.
void ClassicDeviceAdded(IOBluetoothDevice* device);
// Checks if the low energy central manager is powered on. Returns false if
// BLE is not available.
bool IsLowEnergyPowered() const;
// BluetoothLowEnergyDiscoveryManagerMac::Observer override:
void LowEnergyDeviceUpdated(CBPeripheral* peripheral,
NSDictionary* advertisement_data,
int rssi) override;
// Updates |devices_| when there is a change to the CBCentralManager's state.
void LowEnergyCentralManagerUpdatedState();
// Updates |advertisements_| when there is a change to the
// CBPeripheralManager's state.
void LowEnergyPeripheralManagerUpdatedState();
// Updates |devices_| to include the currently paired devices and notifies
// observers.
void AddPairedDevices();
// Returns the list of devices that are connected by other applications than
// Chromium, based on a service UUID. If no uuid is given, generic access
// service (1800) is used (since CoreBluetooth requires to use a service).
std::vector<BluetoothDevice*> RetrieveGattConnectedDevicesWithService(
const BluetoothUUID* uuid);
// Returns the BLE device associated with the CoreBluetooth peripheral.
BluetoothLowEnergyDeviceMac* GetBluetoothLowEnergyDeviceMac(
CBPeripheral* peripheral);
// Returns true if a new device collides with an existing device.
bool DoesCollideWithKnownDevice(CBPeripheral* peripheral,
BluetoothLowEnergyDeviceMac* device_mac);
std::string address_;
bool classic_powered_;
int num_discovery_sessions_;
// Function returning the state of the HostController. Can be overridden for
// tests.
HostControllerStateFunction controller_state_function_;
// SetPowered() implementation and callbacks.
SetControllerPowerStateFunction power_state_function_;
std::unique_ptr<SetPoweredCallbacks> set_powered_callbacks_;
// Cached name. Updated in GetName if should_update_name_ is true.
// For performance reasons, cache the adapter's name. It's not uncommon for
// a call to [controller nameAsString] to take tens of milliseconds. Note
// that this caching strategy might result in clients receiving a stale
// name. If this is a significant issue, then some more sophisticated
// workaround for the performance bottleneck will be needed. For additional
// context, see and
mutable std::string name_;
// True if the name hasn't been acquired yet, the last acquired name is empty
// or the address has changed indicating the name might have changed.
mutable bool should_update_name_;
// Discovery manager for Bluetooth Classic.
std::unique_ptr<BluetoothDiscoveryManagerMac> classic_discovery_manager_;
// Discovery manager for Bluetooth Low Energy.
// Advertisement manager for Bluetooth Low Energy.
// Underlying CoreBluetooth CBCentralManager and its delegate.
base::scoped_nsobject<CBCentralManager> low_energy_central_manager_;
// Underlying CoreBluetooth CBPeripheralManager and its delegate.
base::scoped_nsobject<CBPeripheralManager> low_energy_peripheral_manager_;
base::WeakPtrFactory<BluetoothAdapterMac> weak_ptr_factory_;
} // namespace device