arc: bluetooth: Add gatt client functionality

components/arc/bluetooth/arc_bluetooth_bridge.cc

 // Copyright 2016 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 "components/arc/bluetooth/arc_bluetooth_bridge.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 
 #include <iomanip>
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/bluetooth/bluetooth_type_converters.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 #include "device/bluetooth/bluetooth_device.h"
+#include "device/bluetooth/bluetooth_gatt_connection.h"
+#include "device/bluetooth/bluetooth_gatt_notify_session.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service.h"
 
 using device::BluetoothAdapter;
 using device::BluetoothAdapterFactory;
+using device::BluetoothAdvertisement;
 using device::BluetoothDevice;
+using device::BluetoothDiscoveryFilter;
 using device::BluetoothDiscoverySession;
+using device::BluetoothGattConnection;
+using device::BluetoothGattNotifySession;
+using device::BluetoothGattCharacteristic;
+using device::BluetoothGattDescriptor;
+using device::BluetoothGattService;
 using device::BluetoothRemoteGattCharacteristic;
 using device::BluetoothRemoteGattDescriptor;
 using device::BluetoothRemoteGattService;
+using device::BluetoothUUID;
 
 namespace arc {
 
 ArcBluetoothBridge::ArcBluetoothBridge(ArcBridgeService* bridge_service)
     : ArcService(bridge_service), binding_(this), weak_factory_(this) {
   if (BluetoothAdapterFactory::IsBluetoothAdapterAvailable()) {
     VLOG(1) << "registering bluetooth adapter";
     BluetoothAdapterFactory::GetAdapter(base::Bind(
         &ArcBluetoothBridge::OnAdapterInitialized, weak_factory_.GetWeakPtr()));
   } else {
@@ skipping 53 matching lines @@
     return;
 
   if (device->IsConnected())
     return;
 
   mojo::Array<mojom::BluetoothPropertyPtr> properties =
       GetDeviceProperties(mojom::BluetoothPropertyType::ALL, device);
 
   arc_bridge_service()->bluetooth_instance()->OnDeviceFound(
       std::move(properties));
+
+  mojom::BluetoothAddressPtr addr =
+      mojom::BluetoothAddress::From(device->GetAddress());
+  int rssi = device->GetInquiryRSSI();
+  mojo::Array<uint8_t> adv_data = GetAdvData(device);
+
+  arc_bridge_service()->bluetooth_instance()->OnLEDeviceFound(

[Luis Héctor Chávez, 2016/06/01 21:12:03]

Version check? Same with all other calls you introduce in this change.

+      std::move(addr), rssi, std::move(adv_data));
 }
 
 void ArcBluetoothBridge::DeviceChanged(BluetoothAdapter* adapter,
                                        BluetoothDevice* device) {
   // TODO(smbarber): device properties changed; inform the container.
 }
 
 void ArcBluetoothBridge::DeviceAddressChanged(BluetoothAdapter* adapter,
                                               BluetoothDevice* device,
                                               const std::string& old_address) {
@@ skipping 39 matching lines @@
 
 void ArcBluetoothBridge::GattServiceRemoved(
     BluetoothAdapter* adapter,
     BluetoothDevice* device,
     BluetoothRemoteGattService* service) {
   // Placeholder for GATT client functionality
 }
 
 void ArcBluetoothBridge::GattServicesDiscovered(BluetoothAdapter* adapter,
                                                 BluetoothDevice* device) {
-  // Placeholder for GATT client functionality
+  if (!HasBluetoothInstance())
+    return;
+
+  mojom::BluetoothAddressPtr addr =
+      mojom::BluetoothAddress::From(device->GetAddress());
+
+  arc_bridge_service()->bluetooth_instance()->OnSearchComplete(
+      std::move(addr), mojom::BluetoothGattStatus::GATT_SUCCESS);
 }
 
 void ArcBluetoothBridge::GattDiscoveryCompleteForService(
     BluetoothAdapter* adapter,
     BluetoothRemoteGattService* service) {
   // Placeholder for GATT client functionality
 }
 
 void ArcBluetoothBridge::GattServiceChanged(
     BluetoothAdapter* adapter,
@@ skipping 276 matching lines @@
   BluetoothDevice* device =
       bluetooth_adapter_->GetDevice(addr->To<std::string>());
   if (!device) {
     callback.Run(false);
     return;
   }
 
   callback.Run(device->IsConnected());
 }
 
+void ArcBluetoothBridge::StartLEScan() {
+  DCHECK(bluetooth_adapter_);
+  if (discovery_session_) {
+    LOG(ERROR) << "Discovery session already running; leaving alone";
+    SendCachedDevicesFound();
+    return;
+  }
+  BluetoothDiscoveryFilter* df = new BluetoothDiscoveryFilter(
+      BluetoothDiscoveryFilter::Transport::TRANSPORT_LE);
+  std::unique_ptr<BluetoothDiscoveryFilter> discovery_filter(df);
+  bluetooth_adapter_->StartDiscoverySessionWithFilter(
+      std::move(discovery_filter),
+      base::Bind(&ArcBluetoothBridge::OnDiscoveryStarted,
+                 weak_factory_.GetWeakPtr()),
+      base::Bind(&ArcBluetoothBridge::OnDiscoveryError,
+                 weak_factory_.GetWeakPtr()));
+}
+
+void ArcBluetoothBridge::StopLEScan() {
+  CancelDiscovery();
+}
+
+void ArcBluetoothBridge::OnGattConnected(
+    mojom::BluetoothAddressPtr addr,
+    std::unique_ptr<BluetoothGattConnection> connection) const {
+  if (!HasBluetoothInstance())
+    return;
+
+  DCHECK(addr);
+
+  arc_bridge_service()->bluetooth_instance()->OnLEConnectionStateChange(
+      std::move(addr), true);
+}
+
+void ArcBluetoothBridge::OnGattConnectError(
+    mojom::BluetoothAddressPtr addr,
+    BluetoothDevice::ConnectErrorCode error_code) const {
+  if (!HasBluetoothInstance())
+    return;
+
+  DCHECK(addr);
+
+  arc_bridge_service()->bluetooth_instance()->OnLEConnectionStateChange(
+      std::move(addr), false);
+}
+
+void ArcBluetoothBridge::OnGattDisconnected(
+    mojom::BluetoothAddressPtr addr) const {
+  if (!HasBluetoothInstance())
+    return;
+
+  DCHECK(addr);
+
+  arc_bridge_service()->bluetooth_instance()->OnLEConnectionStateChange(
+      std::move(addr), false);
+}
+
+void ArcBluetoothBridge::ConnectLEDevice(
+    mojom::BluetoothAddressPtr remote_addr) {
+  if (!HasBluetoothInstance())
+    return;
+
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+
+  if (device->IsConnected()) {
+    arc_bridge_service()->bluetooth_instance()->OnLEConnectionStateChange(
+        std::move(remote_addr), true);
+    return;
+  }
+
+  // Also pass disconnect callback in error case
+  // since it would be disconnected anyway.
+  mojom::BluetoothAddressPtr remote_addr1 = remote_addr.Clone();
+  device->CreateGattConnection(
+      base::Bind(&ArcBluetoothBridge::OnGattConnected,
+                 weak_factory_.GetWeakPtr(), base::Passed(&remote_addr)),
+      base::Bind(&ArcBluetoothBridge::OnGattConnectError,
+                 weak_factory_.GetWeakPtr(), base::Passed(&remote_addr1)));
+}
+
+void ArcBluetoothBridge::DisconnectLEDevice(
+    mojom::BluetoothAddressPtr remote_addr) {
+  if (!HasBluetoothInstance())
+    return;
+
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+
+  if (!device->IsConnected()) {
+    arc_bridge_service()->bluetooth_instance()->OnLEConnectionStateChange(
+        std::move(remote_addr), false);
+    return;
+  }
+
+  mojom::BluetoothAddressPtr remote_addr1 = remote_addr.Clone();
+  device->Disconnect(
+      base::Bind(&ArcBluetoothBridge::OnGattDisconnected,
+                 weak_factory_.GetWeakPtr(), base::Passed(&remote_addr)),
+      base::Bind(&ArcBluetoothBridge::OnGattDisconnected,
+                 weak_factory_.GetWeakPtr(), base::Passed(&remote_addr1)));
+}
+
+void ArcBluetoothBridge::SearchService(mojom::BluetoothAddressPtr remote_addr) {
+  if (!HasBluetoothInstance())
+    return;
+
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+
+  // Call the callback if discovery is completed
+  if (device->IsGattServicesDiscoveryComplete()) {
+    arc_bridge_service()->bluetooth_instance()->OnSearchComplete(
+        std::move(remote_addr), mojom::BluetoothGattStatus::GATT_SUCCESS);
+    return;
+  }
+
+  // Discard result. Will call the callback when discovery is completed.
+  device->GetGattServices();
+}
+
+void ArcBluetoothBridge::OnStartLEListenDone(
+    const StartLEListenCallback& callback,
+    scoped_refptr<BluetoothAdvertisement> adv) {
+  advertisment_ = adv;
+  callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+}
+
+void ArcBluetoothBridge::OnStartLEListenError(
+    const StartLEListenCallback& callback,
+    BluetoothAdvertisement::ErrorCode error_code) {
+  advertisment_ = nullptr;
+  callback.Run(mojom::BluetoothGattStatus::GATT_FAILURE);
+}
+
+void ArcBluetoothBridge::StartLEListen(const StartLEListenCallback& callback) {
+  std::unique_ptr<BluetoothAdvertisement::Data> adv_data =
+      base::WrapUnique(new BluetoothAdvertisement::Data(
+          BluetoothAdvertisement::ADVERTISEMENT_TYPE_BROADCAST));
+  adv_data->set_service_uuids(
+      base::WrapUnique(new BluetoothAdvertisement::UUIDList()));
+  adv_data->set_manufacturer_data(
+      base::WrapUnique(new BluetoothAdvertisement::ManufacturerData()));
+  adv_data->set_solicit_uuids(
+      base::WrapUnique(new BluetoothAdvertisement::UUIDList()));
+  adv_data->set_service_data(
+      base::WrapUnique(new BluetoothAdvertisement::ServiceData()));
+  bluetooth_adapter_->RegisterAdvertisement(
+      std::move(adv_data), base::Bind(&ArcBluetoothBridge::OnStartLEListenDone,
+                                      weak_factory_.GetWeakPtr(), callback),
+      base::Bind(&ArcBluetoothBridge::OnStartLEListenError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::OnStopLEListenDone(
+    const StopLEListenCallback& callback) {
+  advertisment_ = nullptr;
+  callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+}
+
+void ArcBluetoothBridge::OnStopLEListenError(
+    const StopLEListenCallback& callback,
+    BluetoothAdvertisement::ErrorCode error_code) {
+  advertisment_ = nullptr;
+  callback.Run(mojom::BluetoothGattStatus::GATT_FAILURE);
+}
+
+void ArcBluetoothBridge::StopLEListen(const StopLEListenCallback& callback) {
+  if (!advertisment_) {
+    OnStopLEListenError(
+        callback,
+        BluetoothAdvertisement::ErrorCode::ERROR_ADVERTISEMENT_DOES_NOT_EXIST);
+    return;
+  }
+  advertisment_->Unregister(base::Bind(&ArcBluetoothBridge::OnStopLEListenDone,
+                                       weak_factory_.GetWeakPtr(), callback),
+                            base::Bind(&ArcBluetoothBridge::OnStopLEListenError,
+                                       weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::GetGattDB(mojom::BluetoothAddressPtr remote_addr) {
+  if (!HasBluetoothInstance())
+    return;
+
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+  mojo::Array<mojom::BluetoothGattDBElementPtr> db;
+  for (auto& service : device->GetGattServices()) {
+    mojom::BluetoothGattDBElementPtr element =
+        mojom::BluetoothGattDBElement::New();
+
+    // Example: /org/bluez/hci0/dev_E0_CF_65_8C_86_1A/service001a
+    std::string id_str = service->GetIdentifier();
+
+    // Convert last digit of service id to int in base 16
+    int id = std::stoi(id_str.substr(id_str.size() - 4), nullptr, 16);
+
+    element->id = id;
+    element->uuid = mojom::BluetoothUUID::From(service->GetUUID());
+    if (service->IsPrimary()) {
+      element->type =
+          mojom::BluetoothGattDBAttributeType::BTGATT_DB_PRIMARY_SERVICE;
+    } else {
+      element->type =
+          mojom::BluetoothGattDBAttributeType::BTGATT_DB_SECONDARY_SERVICE;
+    }
+    element->attribute_handle = id;
+    std::vector<BluetoothRemoteGattCharacteristic*> characteristics =
+        service->GetCharacteristics();
+    if (characteristics.size() > 0) {
+      std::string first_id_str = characteristics.front()->GetIdentifier();
+      int first_id =
+          std::stoi(first_id_str.substr(first_id_str.size() - 4), nullptr, 16);
+      std::string last_id_str = characteristics.back()->GetIdentifier();
+      int last_id =
+          std::stoi(last_id_str.substr(last_id_str.size() - 4), nullptr, 16);
+      element->start_handle = first_id;
+      element->end_handle = last_id;
+    }
+    db.push_back(std::move(element));
+
+    for (auto& characteristic : characteristics) {
+      mojom::BluetoothGattDBElementPtr element =
+          mojom::BluetoothGattDBElement::New();
+      std::string id_str = characteristic->GetIdentifier();
+      int id = std::stoi(id_str.substr(id_str.size() - 4), nullptr, 16);
+      element->id = id;
+      element->uuid = mojom::BluetoothUUID::From(characteristic->GetUUID());
+      element->type =
+          mojom::BluetoothGattDBAttributeType::BTGATT_DB_CHARACTERISTIC;
+      element->attribute_handle = id;
+      element->properties = characteristic->GetProperties();
+      db.push_back(std::move(element));
+
+      for (auto& descriptor : characteristic->GetDescriptors()) {
+        mojom::BluetoothGattDBElementPtr element =
+            mojom::BluetoothGattDBElement::New();
+        std::string id_str = descriptor->GetIdentifier();
+        int id = std::stoi(id_str.substr(id_str.size() - 4), nullptr, 16);
+        element->id = id;
+        element->uuid = mojom::BluetoothUUID::From(descriptor->GetUUID());
+        element->type =
+            mojom::BluetoothGattDBAttributeType::BTGATT_DB_DESCRIPTOR;
+        element->attribute_handle = id;
+        db.push_back(std::move(element));
+      }
+    }
+  }
+
+  arc_bridge_service()->bluetooth_instance()->OnGetGattDB(
+      std::move(remote_addr), std::move(db));
+}
+
+BluetoothRemoteGattCharacteristic* ArcBluetoothBridge::FindGattCharacteristic(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id) const {
+  DCHECK(remote_addr);
+  DCHECK(service_id);
+  DCHECK(char_id);
+
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+  if (!device)
+    return nullptr;
+
+  BluetoothUUID serv_uuid = service_id->id->uuid.To<BluetoothUUID>();
+
+  BluetoothRemoteGattService* service = nullptr;
+  for (auto& s : device->GetGattServices()) {
+    if (s->GetUUID() == serv_uuid) {
+      service = s;
+      break;
+    }
+  }
+  if (!service)
+    return nullptr;
+
+  BluetoothUUID char_uuid = char_id->uuid.To<BluetoothUUID>();
+
+  for (auto& c : service->GetCharacteristics()) {
+    if (c->GetUUID() == char_uuid) {
+      return c;
+    }
+  }
+  return nullptr;
+}
+
+BluetoothRemoteGattDescriptor* ArcBluetoothBridge::FindGattDescriptor(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    mojom::BluetoothGattIDPtr desc_id) const {
+  BluetoothRemoteGattCharacteristic* characteristic = FindGattCharacteristic(
+      std::move(remote_addr), std::move(service_id), std::move(char_id));
+
+  if (!characteristic)
+    return nullptr;
+
+  BluetoothUUID desc_uuid = desc_id->uuid.To<BluetoothUUID>();
+  for (auto& d : characteristic->GetDescriptors()) {
+    if (d->GetUUID() == desc_uuid) {
+      return d;
+    }
+  }
+  return nullptr;
+}
+
+// same callback for both ReadGattCharacteristic and ReadGattDescriptor
+void ArcBluetoothBridge::OnGattReadDone(
+    const GattReadCallback& callback,
+    const std::vector<uint8_t>& result) const {
+  mojom::BluetoothGattValuePtr gattValue = mojom::BluetoothGattValue::New();
+  gattValue->status = mojom::BluetoothGattStatus::GATT_SUCCESS;
+  gattValue->len = result.size();
+  gattValue->type = 0;
+  gattValue->value = mojo::Array<uint8_t>::From(result);
+  callback.Run(std::move(gattValue));
+}
+
+void ArcBluetoothBridge::OnGattReadError(
+    const GattReadCallback& callback,
+    BluetoothGattService::GattErrorCode error_code) const {
+  mojom::BluetoothGattValuePtr gattValue = mojom::BluetoothGattValue::New();
+  gattValue->status = mojo::ConvertTo<mojom::BluetoothGattStatus>(error_code);
+  gattValue->len = 0;
+  gattValue->type = 0;
+  gattValue->value = nullptr;
+
+  callback.Run(std::move(gattValue));
+}
+
+// same callback for both WriteGattCharacteristic and WriteGattDescriptor
+void ArcBluetoothBridge::OnGattWriteDone(
+    const GattWriteCallback& callback) const {
+  callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+}
+
+void ArcBluetoothBridge::OnGattWriteError(
+    const GattWriteCallback& callback,
+    BluetoothGattService::GattErrorCode error_code) const {
+  callback.Run(mojo::ConvertTo<mojom::BluetoothGattStatus>(error_code));
+}
+
+void ArcBluetoothBridge::ReadGattCharacteristic(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    const ReadGattCharacteristicCallback& callback) {
+  BluetoothRemoteGattCharacteristic* characteristic = FindGattCharacteristic(
+      std::move(remote_addr), std::move(service_id), std::move(char_id));
+
+  DCHECK(characteristic);
+
+  DCHECK(characteristic->GetPermissions() &&
+         BluetoothGattCharacteristic::Permission::PERMISSION_READ);
+
+  characteristic->ReadRemoteCharacteristic(
+      base::Bind(&ArcBluetoothBridge::OnGattReadDone,
+                 weak_factory_.GetWeakPtr(), callback),
+      base::Bind(&ArcBluetoothBridge::OnGattReadError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::WriteGattCharacteristic(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    mojom::BluetoothGattValuePtr value,
+    const WriteGattCharacteristicCallback& callback) {
+  BluetoothRemoteGattCharacteristic* characteristic = FindGattCharacteristic(
+      std::move(remote_addr), std::move(service_id), std::move(char_id));
+
+  DCHECK(characteristic);
+
+  DCHECK(characteristic->GetPermissions() &&
+         BluetoothGattCharacteristic::Permission::PERMISSION_WRITE);
+
+  std::vector<uint8_t> new_value = value->value.To<std::vector<uint8_t>>();
+
+  characteristic->WriteRemoteCharacteristic(
+      new_value, base::Bind(&ArcBluetoothBridge::OnGattWriteDone,
+                            weak_factory_.GetWeakPtr(), callback),
+      base::Bind(&ArcBluetoothBridge::OnGattWriteError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::ReadGattDescriptor(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    mojom::BluetoothGattIDPtr desc_id,
+    const ReadGattDescriptorCallback& callback) {
+  BluetoothRemoteGattDescriptor* descriptor =
+      FindGattDescriptor(std::move(remote_addr), std::move(service_id),
+                         std::move(char_id), std::move(desc_id));
+  DCHECK(descriptor);
+
+  DCHECK(descriptor->GetPermissions() &&
+         BluetoothGattCharacteristic::Permission::PERMISSION_READ);
+
+  descriptor->ReadRemoteDescriptor(
+      base::Bind(&ArcBluetoothBridge::OnGattReadDone,
+                 weak_factory_.GetWeakPtr(), callback),
+      base::Bind(&ArcBluetoothBridge::OnGattReadError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::WriteGattDescriptor(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    mojom::BluetoothGattIDPtr desc_id,
+    mojom::BluetoothGattValuePtr value,
+    const WriteGattDescriptorCallback& callback) {
+  BluetoothRemoteGattDescriptor* descriptor =
+      FindGattDescriptor(std::move(remote_addr), std::move(service_id),
+                         std::move(char_id), std::move(desc_id));
+  DCHECK(descriptor);
+
+  DCHECK(descriptor->GetPermissions() &&
+         BluetoothGattCharacteristic::Permission::PERMISSION_WRITE);
+
+  std::vector<uint8_t> new_value = value->value.To<std::vector<uint8_t>>();
+
+  descriptor->WriteRemoteDescriptor(
+      new_value, base::Bind(&ArcBluetoothBridge::OnGattWriteDone,
+                            weak_factory_.GetWeakPtr(), callback),
+      base::Bind(&ArcBluetoothBridge::OnGattWriteError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::OnGattNotifyStartDone(
+    const RegisterForGattNotificationCallback& callback,
+    const std::string char_string_id,
+    std::unique_ptr<BluetoothGattNotifySession> notify_session) {
+  notification_session_[char_string_id] = std::move(notify_session);
+  callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+}
+
+void ArcBluetoothBridge::OnGattNotifyStartError(
+    const RegisterForGattNotificationCallback& callback,
+    BluetoothGattService::GattErrorCode error_code) const {
+  callback.Run(mojo::ConvertTo<mojom::BluetoothGattStatus>(error_code));
+}
+
+void ArcBluetoothBridge::OnGattNotifyStopDone(
+    const DeregisterForGattNotificationCallback& callback) const {
+  callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+}
+
+void ArcBluetoothBridge::RegisterForGattNotification(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    const RegisterForGattNotificationCallback& callback) {
+  BluetoothRemoteGattCharacteristic* characteristic = FindGattCharacteristic(
+      std::move(remote_addr), std::move(service_id), std::move(char_id));
+
+  DCHECK(characteristic);
+
+  if (characteristic->IsNotifying()) {
+    callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+    return;
+  }
+
+  characteristic->StartNotifySession(
+      base::Bind(&ArcBluetoothBridge::OnGattNotifyStartDone,
+                 weak_factory_.GetWeakPtr(), callback,
+                 characteristic->GetIdentifier()),
+      base::Bind(&ArcBluetoothBridge::OnGattNotifyStartError,
+                 weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::DeregisterForGattNotification(
+    mojom::BluetoothAddressPtr remote_addr,
+    mojom::BluetoothGattServiceIDPtr service_id,
+    mojom::BluetoothGattIDPtr char_id,
+    const DeregisterForGattNotificationCallback& callback) {
+  BluetoothRemoteGattCharacteristic* characteristic = FindGattCharacteristic(
+      std::move(remote_addr), std::move(service_id), std::move(char_id));
+
+  DCHECK(characteristic);
+
+  if (!characteristic->IsNotifying()) {
+    callback.Run(mojom::BluetoothGattStatus::GATT_SUCCESS);
+    return;
+  }
+
+  std::string char_id_str = characteristic->GetIdentifier();
+  std::unique_ptr<BluetoothGattNotifySession> notify =
+      std::move(notification_session_[char_id_str]);
+  notification_session_.erase(char_id_str);
+  notify->Stop(base::Bind(&ArcBluetoothBridge::OnGattNotifyStopDone,
+                          weak_factory_.GetWeakPtr(), callback));
+}
+
+void ArcBluetoothBridge::ReadRemoteRssi(
+    mojom::BluetoothAddressPtr remote_addr,
+    const ReadRemoteRssiCallback& callback) {
+  BluetoothDevice* device =
+      bluetooth_adapter_->GetDevice(remote_addr->To<std::string>());
+  int rssi = device->GetInquiryRSSI();
+  callback.Run(rssi);
+}
+
 void ArcBluetoothBridge::OnDiscoveryError() {
   LOG(WARNING) << "failed to change discovery state";
 }
 
 void ArcBluetoothBridge::OnPairing(mojom::BluetoothAddressPtr addr) const {
   if (!HasBluetoothInstance())
     return;
 
   arc_bridge_service()->bluetooth_instance()->OnBondStateChanged(
       mojom::BluetoothStatus::SUCCESS, std::move(addr),
@@ skipping 60 matching lines @@
   }
   if (type == mojom::BluetoothPropertyType::ALL ||
       type == mojom::BluetoothPropertyType::BDADDR) {
     mojom::BluetoothPropertyPtr btp = mojom::BluetoothProperty::New();
     btp->set_bdaddr(mojom::BluetoothAddress::From(device->GetAddress()));
     properties.push_back(std::move(btp));
   }
   if (type == mojom::BluetoothPropertyType::ALL ||
       type == mojom::BluetoothPropertyType::UUIDS) {
     mojom::BluetoothPropertyPtr btp = mojom::BluetoothProperty::New();
-    std::vector<device::BluetoothUUID> uuids = device->GetUUIDs();
+    std::vector<BluetoothUUID> uuids = device->GetUUIDs();
     mojo::Array<mojom::BluetoothUUIDPtr> uuid_results =
         mojo::Array<mojom::BluetoothUUIDPtr>::New(0);
 
-    for (size_t i = 0; i < uuids.size(); i++) {
-      uuid_results.push_back(mojom::BluetoothUUID::From(uuids[i]));
+    for (auto& uuid : uuids) {
+      uuid_results.push_back(mojom::BluetoothUUID::From(uuid));
     }
 
     btp->set_uuids(std::move(uuid_results));
     properties.push_back(std::move(btp));
   }
   if (type == mojom::BluetoothPropertyType::ALL ||
       type == mojom::BluetoothPropertyType::CLASS_OF_DEVICE) {
     mojom::BluetoothPropertyPtr btp = mojom::BluetoothProperty::New();
     btp->set_device_class(device->GetBluetoothClass());
     properties.push_back(std::move(btp));
@@ skipping 71 matching lines @@
     properties.push_back(std::move(btp));
   }
   if (type == mojom::BluetoothPropertyType::ALL ||
       type == mojom::BluetoothPropertyType::ADAPTER_BONDED_DEVICES) {
     mojom::BluetoothPropertyPtr btp = mojom::BluetoothProperty::New();
     BluetoothAdapter::DeviceList devices = bluetooth_adapter_->GetDevices();
 
     mojo::Array<mojom::BluetoothAddressPtr> bonded_devices =
         mojo::Array<mojom::BluetoothAddressPtr>::New(0);
 
-    for (size_t i = 0; i < devices.size(); i++) {
-      if (!devices[i]->IsPaired())
+    for (auto& device : devices) {
+      if (device->IsPaired())
         continue;
 
       mojom::BluetoothAddressPtr addr =
-          mojom::BluetoothAddress::From(devices[i]->GetAddress());
+          mojom::BluetoothAddress::From(device->GetAddress());
       bonded_devices.push_back(std::move(addr));
     }
 
     btp->set_bonded_devices(std::move(bonded_devices));
     properties.push_back(std::move(btp));
   }
   if (type == mojom::BluetoothPropertyType::ALL ||
       type == mojom::BluetoothPropertyType::ADAPTER_DISCOVERY_TIMEOUT) {
     mojom::BluetoothPropertyPtr btp = mojom::BluetoothProperty::New();
     btp->set_discovery_timeout(120);
     properties.push_back(std::move(btp));
   }
 
   return properties;
 }
 
+mojo::Array<uint8_t> ArcBluetoothBridge::GetAdvData(

[Luis Héctor Chávez, 2016/06/01 21:12:03]

eek, sending a blob. Is there absolutely no way to make this a legit structure?

Also, this doesn't seem to use any members of the class, can you move this to
bluetooth_type_converters.h?

+    BluetoothDevice* device) const {
+  std::vector<uint8_t> vec = std::vector<uint8_t>();
+  int field_length;
+
+  // const int DATA_TYPE_FLAGS = 0x01;
+  const int DATA_TYPE_SERVICE_UUIDS_128_BIT_COMPLETE = 0x07;
+  const int DATA_TYPE_LOCAL_NAME_COMPLETE = 0x09;
+  const int DATA_TYPE_TX_POWER_LEVEL = 0x0A;
+  const int DATA_TYPE_SERVICE_DATA = 0x16;
+  // const int DATA_TYPE_MANUFACTURER_SPECIFIC_DATA = 0xFF;
+
+  // AdvertiseFlag
+  // Flags Advertising Data Type
+  // Bit0 – Indicates LE Limited Discoverable Mode
+  // Bit1 – Indicates LE General Discoverable Mode
+  // Bit2 – Indicates whether BR/EDR is supported.
+  // Bit3 – Indicates whether LE and BR/EDR Controller operates simultaneously
+  // Bit4 – Indicates whether LE and BR/EDR Host operates simultaneously
+  // No need? Chrome do not expose this.
+
+  // ServiceUuid
+  BluetoothDevice::UUIDList uuid_list = device->GetServiceDataUUIDs();
+  if (uuid_list.size() > 0) {
+    field_length = uuid_list.size() * 16 + 2;
+    vec.push_back(field_length);
+    vec.push_back(DATA_TYPE_SERVICE_UUIDS_128_BIT_COMPLETE);
+
+    for (auto& uuid : uuid_list) {
+      std::string str = uuid.canonical_value();
+      for (auto& c : str) {
+        if (c == '-')
+          continue;
+        vec.push_back(c);
+      }
+    }
+  }
+
+  // LocalName
+  std::string name = base::UTF16ToUTF8(device->GetName());
+  field_length = name.size() + 2;
+  vec.push_back(field_length);
+  vec.push_back(DATA_TYPE_LOCAL_NAME_COMPLETE);
+  for (auto& c : name) {
+    vec.push_back(c);
+  }
+
+  // txPowerLevel
+  vec.push_back(3);
+  vec.push_back(DATA_TYPE_TX_POWER_LEVEL);
+  vec.push_back(device->GetInquiryTxPower());
+
+  // Service data
+  for (auto& uuid : uuid_list) {
+    base::BinaryValue* data = device->GetServiceData(uuid);
+    if (data->GetSize() == 0)
+      continue;
+    std::string data_str;
+    if (!data->GetAsString(&data_str))
+      continue;
+
+    vec.push_back(2 + data->GetSize());
+    vec.push_back(DATA_TYPE_SERVICE_DATA);
+    for (auto& c : data_str) {
+      vec.push_back(c);
+    }
+  }
+
+  // ManufactureData
+  // No need? Chrome do not expose this.
+
+  vec.push_back(0);
+
+  return mojo::Array<uint8_t>::From(vec);
+}
+
 void ArcBluetoothBridge::SendCachedDevicesFound() const {
   // Send devices that have already been discovered, but aren't connected.
   if (!HasBluetoothInstance())
     return;
 
   BluetoothAdapter::DeviceList devices = bluetooth_adapter_->GetDevices();
-  for (size_t i = 0; i < devices.size(); i++) {
-    if (devices[i]->IsPaired())
+  for (auto& device : devices) {
+    if (device->IsPaired())
       continue;
 
     mojo::Array<mojom::BluetoothPropertyPtr> properties =
-        GetDeviceProperties(mojom::BluetoothPropertyType::ALL, devices[i]);
+        GetDeviceProperties(mojom::BluetoothPropertyType::ALL, device);
 
     arc_bridge_service()->bluetooth_instance()->OnDeviceFound(
         std::move(properties));
+
+    mojom::BluetoothAddressPtr addr =
+        mojom::BluetoothAddress::From(device->GetAddress());
+    int rssi = device->GetInquiryRSSI();
+
+    mojo::Array<uint8_t> adv_data = GetAdvData(device);
+
+    arc_bridge_service()->bluetooth_instance()->OnLEDeviceFound(
+        std::move(addr), rssi, std::move(adv_data));
   }
 }
 
 bool ArcBluetoothBridge::HasBluetoothInstance() const {
   if (!arc_bridge_service()->bluetooth_instance()) {
     LOG(WARNING) << "no Bluetooth instance available";
     return false;
   }
 
   return true;
 }
 
 void ArcBluetoothBridge::SendCachedPairedDevices() const {
   DCHECK(bluetooth_adapter_);
+  if (!HasBluetoothInstance())
+    return;
 
   BluetoothAdapter::DeviceList devices = bluetooth_adapter_->GetDevices();
-  for (BluetoothDevice* device : devices) {
+  for (auto& device : devices) {
     if (!device->IsPaired())
       continue;
 
     mojo::Array<mojom::BluetoothPropertyPtr> properties =
         GetDeviceProperties(mojom::BluetoothPropertyType::ALL, device);
 
     arc_bridge_service()->bluetooth_instance()->OnDeviceFound(
         std::move(properties));
 
     mojom::BluetoothAddressPtr addr =
         mojom::BluetoothAddress::From(device->GetAddress());
 
     // OnBondStateChanged must be called with mojom::BluetoothBondState::BONDING
     // to
     // make sure the bond state machine on Android is ready to take the
     // pair-done event. Otherwise the pair-done event will be dropped as an
     // invalid change of paired status.
     OnPairing(addr->Clone());
     OnPairedDone(std::move(addr));
   }
 }
 
 }  // namespace arc