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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "device/bluetooth/bluetooth_device.h"
#include <array>
#include <cstdint>
#include <iterator>
#include <memory>
#include <string>
#include <utility>
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "base/values.h"
#include "build/build_config.h"
#include "device/bluetooth/bluetooth_adapter.h"
#include "device/bluetooth/bluetooth_gatt_connection.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"
#include "device/bluetooth/public/cpp/bluetooth_uuid.h"
#include "device/bluetooth/string_util_icu.h"
#include "device/bluetooth/strings/grit/bluetooth_strings.h"
#include "ui/base/l10n/l10n_util.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "base/no_destructor.h"
#endif // BUILDFLAG(IS_CHROMEOS)
namespace device {
#if BUILDFLAG(IS_CHROMEOS)
// See Bluetooth Assigned Numbers - 3.3 SDP Service Class and Profile
// Identifiers
const base::NoDestructor<std::vector<BluetoothUUID>> kAudioUUIDs([] {
return std::vector<BluetoothUUID>({
BluetoothUUID("0x110B"), // Audio sink
BluetoothUUID("0x111E"), // Hands free
});
}());
#endif // BUILDFLAG(IS_CHROMEOS)
using BatteryInfo = BluetoothDevice::BatteryInfo;
using BatteryType = BluetoothDevice::BatteryType;
BluetoothDevice::DeviceUUIDs::DeviceUUIDs() = default;
BluetoothDevice::DeviceUUIDs::~DeviceUUIDs() = default;
BluetoothDevice::DeviceUUIDs::DeviceUUIDs(const DeviceUUIDs& other) = default;
BluetoothDevice::DeviceUUIDs& BluetoothDevice::DeviceUUIDs::operator=(
const DeviceUUIDs& other) = default;
void BluetoothDevice::DeviceUUIDs::ReplaceAdvertisedUUIDs(
UUIDList new_advertised_uuids) {
advertised_uuids_.clear();
for (auto& it : new_advertised_uuids) {
advertised_uuids_.insert(std::move(it));
}
UpdateDeviceUUIDs();
}
void BluetoothDevice::DeviceUUIDs::ClearAdvertisedUUIDs() {
advertised_uuids_.clear();
UpdateDeviceUUIDs();
}
void BluetoothDevice::DeviceUUIDs::ReplaceServiceUUIDs(
const GattServiceMap& gatt_services) {
service_uuids_.clear();
for (const auto& gatt_service_pair : gatt_services)
service_uuids_.insert(gatt_service_pair.second->GetUUID());
UpdateDeviceUUIDs();
}
void BluetoothDevice::DeviceUUIDs::ReplaceServiceUUIDs(
UUIDList new_service_uuids) {
service_uuids_.clear();
for (auto& it : new_service_uuids) {
service_uuids_.insert(std::move(it));
}
UpdateDeviceUUIDs();
}
void BluetoothDevice::DeviceUUIDs::ClearServiceUUIDs() {
service_uuids_.clear();
UpdateDeviceUUIDs();
}
const BluetoothDevice::UUIDSet& BluetoothDevice::DeviceUUIDs::GetUUIDs() const {
return device_uuids_;
}
void BluetoothDevice::DeviceUUIDs::UpdateDeviceUUIDs() {
device_uuids_ = base::STLSetUnion<BluetoothDevice::UUIDSet>(advertised_uuids_,
service_uuids_);
}
BluetoothDevice::BluetoothDevice(BluetoothAdapter* adapter)
: adapter_(adapter),
gatt_services_discovery_complete_(false),
last_update_time_(base::Time()) {}
BluetoothDevice::~BluetoothDevice() {
for (BluetoothGattConnection* connection : gatt_connections_) {
connection->InvalidateConnectionReference();
}
}
BluetoothDevice::ConnectionInfo::ConnectionInfo()
: rssi(kUnknownPower),
transmit_power(kUnknownPower),
max_transmit_power(kUnknownPower) {}
BluetoothDevice::ConnectionInfo::ConnectionInfo(int rssi,
int transmit_power,
int max_transmit_power)
: rssi(rssi),
transmit_power(transmit_power),
max_transmit_power(max_transmit_power) {}
BluetoothDevice::ConnectionInfo::~ConnectionInfo() = default;
BatteryInfo::BatteryInfo() : BatteryInfo(BatteryType::kDefault, std::nullopt) {}
BatteryInfo::BatteryInfo(BatteryType type, std::optional<uint8_t> percentage)
: BatteryInfo(type, percentage, BatteryInfo::ChargeState::kUnknown) {}
BatteryInfo::BatteryInfo(BatteryType type,
std::optional<uint8_t> percentage,
ChargeState charge_state)
: type(type),
percentage(std::move(percentage)),
charge_state(charge_state) {}
BatteryInfo::BatteryInfo(const BatteryInfo&) = default;
BatteryInfo& BatteryInfo::operator=(const BatteryInfo&) = default;
BatteryInfo::BatteryInfo(BatteryInfo&&) = default;
BatteryInfo& BatteryInfo::operator=(BatteryInfo&&) = default;
bool BatteryInfo::operator==(const BatteryInfo& other) {
return type == other.type && percentage == other.percentage &&
charge_state == other.charge_state;
}
BatteryInfo::~BatteryInfo() = default;
std::u16string BluetoothDevice::GetNameForDisplay() const {
std::optional<std::string> name = GetName();
if (name && HasGraphicCharacter(name.value())) {
return base::UTF8ToUTF16(name.value());
} else {
return GetAddressWithLocalizedDeviceTypeName();
}
}
std::u16string BluetoothDevice::GetAddressWithLocalizedDeviceTypeName() const {
std::u16string address_utf16 = base::UTF8ToUTF16(GetAddress());
BluetoothDeviceType device_type = GetDeviceType();
switch (device_type) {
case BluetoothDeviceType::COMPUTER:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_COMPUTER,
address_utf16);
case BluetoothDeviceType::PHONE:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_PHONE,
address_utf16);
case BluetoothDeviceType::MODEM:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_MODEM,
address_utf16);
case BluetoothDeviceType::AUDIO:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_AUDIO,
address_utf16);
case BluetoothDeviceType::CAR_AUDIO:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_CAR_AUDIO,
address_utf16);
case BluetoothDeviceType::VIDEO:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_VIDEO,
address_utf16);
case BluetoothDeviceType::JOYSTICK:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_JOYSTICK,
address_utf16);
case BluetoothDeviceType::GAMEPAD:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_GAMEPAD,
address_utf16);
case BluetoothDeviceType::KEYBOARD:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_KEYBOARD,
address_utf16);
case BluetoothDeviceType::MOUSE:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_MOUSE,
address_utf16);
case BluetoothDeviceType::TABLET:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_TABLET,
address_utf16);
case BluetoothDeviceType::KEYBOARD_MOUSE_COMBO:
return l10n_util::GetStringFUTF16(
IDS_BLUETOOTH_DEVICE_KEYBOARD_MOUSE_COMBO, address_utf16);
default:
return l10n_util::GetStringFUTF16(IDS_BLUETOOTH_DEVICE_UNKNOWN,
address_utf16);
}
}
BluetoothDeviceType BluetoothDevice::GetDeviceType() const {
// https://www.bluetooth.org/Technical/AssignedNumbers/baseband.htm
uint32_t bluetooth_class = GetBluetoothClass();
switch ((bluetooth_class & 0x1f00) >> 8) {
case 0x01:
// Computer major device class.
return BluetoothDeviceType::COMPUTER;
case 0x02:
// Phone major device class.
switch ((bluetooth_class & 0xfc) >> 2) {
case 0x01:
case 0x02:
case 0x03:
// Cellular, cordless and smart phones.
return BluetoothDeviceType::PHONE;
case 0x04:
case 0x05:
// Modems: wired or voice gateway and common ISDN access.
return BluetoothDeviceType::MODEM;
}
break;
case 0x04:
// Audio major device class.
switch ((bluetooth_class & 0xfc) >> 2) {
case 0x08:
// Car audio.
return BluetoothDeviceType::CAR_AUDIO;
case 0x0b:
case 0x0c:
case 0x0d:
case 0x0e:
case 0x0f:
case 0x010:
// Video devices.
return BluetoothDeviceType::VIDEO;
default:
return BluetoothDeviceType::AUDIO;
}
case 0x05:
// Peripheral major device class.
switch ((bluetooth_class & 0xc0) >> 6) {
case 0x00:
// "Not a keyboard or pointing device."
switch ((bluetooth_class & 0x01e) >> 2) {
case 0x01:
// Joystick.
return BluetoothDeviceType::JOYSTICK;
case 0x02:
// Gamepad.
return BluetoothDeviceType::GAMEPAD;
default:
return BluetoothDeviceType::PERIPHERAL;
}
case 0x01:
// Keyboard.
return BluetoothDeviceType::KEYBOARD;
case 0x02:
// Pointing device.
switch ((bluetooth_class & 0x01e) >> 2) {
case 0x05:
// Digitizer tablet.
return BluetoothDeviceType::TABLET;
default:
// Mouse.
return BluetoothDeviceType::MOUSE;
}
case 0x03:
// Combo device.
return BluetoothDeviceType::KEYBOARD_MOUSE_COMBO;
}
break;
}
// Some bluetooth devices, e.g., Microsoft Universal Foldable Keyboard,
// do not expose its bluetooth class. Use its appearance as a work-around.
// https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.gap.appearance.xml
uint16_t appearance = GetAppearance();
// appearance: 10-bit category and 6-bit sub-category
switch ((appearance & 0xffc0) >> 6) {
case 0x01:
// Generic phone
return BluetoothDeviceType::PHONE;
case 0x02:
// Generic computer
return BluetoothDeviceType::COMPUTER;
case 0x0f:
// HID subtype
switch (appearance & 0x3f) {
case 0x01:
// Keyboard.
return BluetoothDeviceType::KEYBOARD;
case 0x02:
// Mouse
return BluetoothDeviceType::MOUSE;
case 0x03:
// Joystick
return BluetoothDeviceType::JOYSTICK;
case 0x04:
// Gamepad
return BluetoothDeviceType::GAMEPAD;
case 0x05:
// Digitizer tablet
return BluetoothDeviceType::TABLET;
}
}
#if BUILDFLAG(IS_CHROMEOS)
// Some bluetooth devices paired via Fast Pair, e.g., JBL TUNE230NC,
// do not expose its bluetooth class or its appearance. Use UUIDs as
// last workaround.
UUIDSet uuids = GetUUIDs();
for (const auto& audio_uuid : *kAudioUUIDs) {
if (uuids.contains(audio_uuid)) {
return BluetoothDeviceType::AUDIO;
}
}
#endif // BUILDFLAG(IS_CHROMEOS)
return BluetoothDeviceType::UNKNOWN;
}
bool BluetoothDevice::IsPairable() const {
BluetoothDeviceType type = GetDeviceType();
// Get the vendor part of the address: "00:11:22" for "00:11:22:33:44:55"
std::string vendor = GetOuiPortionOfBluetoothAddress();
// Verbatim "Bluetooth Mouse", model 96674
if (type == BluetoothDeviceType::MOUSE && vendor == "00:12:A1")
return false;
// Microsoft "Microsoft Bluetooth Notebook Mouse 5000", model X807028-001
if (type == BluetoothDeviceType::MOUSE && vendor == "7C:ED:8D")
return false;
// TODO: Move this database into a config file.
return true;
}
BluetoothDevice::UUIDSet BluetoothDevice::GetUUIDs() const {
return device_uuids_.GetUUIDs();
}
#if BUILDFLAG(IS_CHROMEOS)
void BluetoothDevice::SetIsBlockedByPolicy(bool is_blocked_by_policy) {
if (is_blocked_by_policy_ == is_blocked_by_policy) {
return;
}
is_blocked_by_policy_ = is_blocked_by_policy;
GetAdapter()->NotifyDeviceIsBlockedByPolicyChanged(this,
is_blocked_by_policy);
}
bool BluetoothDevice::IsBlockedByPolicy() const {
return is_blocked_by_policy_;
}
#endif
const BluetoothDevice::ServiceDataMap& BluetoothDevice::GetServiceData() const {
return service_data_;
}
BluetoothDevice::UUIDSet BluetoothDevice::GetServiceDataUUIDs() const {
UUIDSet service_data_uuids;
for (const auto& uuid_service_data_pair : service_data_) {
service_data_uuids.insert(uuid_service_data_pair.first);
}
return service_data_uuids;
}
const std::vector<uint8_t>* BluetoothDevice::GetServiceDataForUUID(
const BluetoothUUID& uuid) const {
auto it = service_data_.find(uuid);
if (it != service_data_.end()) {
return &it->second;
}
return nullptr;
}
const BluetoothDevice::ManufacturerDataMap&
BluetoothDevice::GetManufacturerData() const {
return manufacturer_data_;
}
BluetoothDevice::ManufacturerIDSet BluetoothDevice::GetManufacturerDataIDs()
const {
ManufacturerIDSet manufacturer_data_ids;
for (const auto& manufacturer_data_pair : manufacturer_data_) {
manufacturer_data_ids.insert(manufacturer_data_pair.first);
}
return manufacturer_data_ids;
}
const std::vector<uint8_t>* BluetoothDevice::GetManufacturerDataForID(
const ManufacturerId manufacturerID) const {
auto it = manufacturer_data_.find(manufacturerID);
if (it != manufacturer_data_.end()) {
return &it->second;
}
return nullptr;
}
std::optional<int8_t> BluetoothDevice::GetInquiryRSSI() const {
return inquiry_rssi_;
}
std::optional<uint8_t> BluetoothDevice::GetAdvertisingDataFlags() const {
return advertising_data_flags_;
}
std::optional<int8_t> BluetoothDevice::GetInquiryTxPower() const {
return inquiry_tx_power_;
}
void BluetoothDevice::CreateGattConnection(
GattConnectionCallback callback,
std::optional<BluetoothUUID> service_uuid) {
if (!supports_service_specific_discovery_)
service_uuid.reset();
const bool connection_already_pending =
!create_gatt_connection_callbacks_.empty();
create_gatt_connection_callbacks_.push_back(std::move(callback));
// If a service-specific discovery was originally requested, but this request
// is for a different or non-specific discovery, then the previous discovery
// needs to be redone.
if (target_service_.has_value() && target_service_ != service_uuid) {
DCHECK(IsGattConnected() || connection_already_pending);
target_service_ = service_uuid;
UpgradeToFullDiscovery();
}
if (IsGattConnected()) {
DCHECK(!connection_already_pending);
return DidConnectGatt(/*error_code=*/std::nullopt);
}
if (connection_already_pending) {
// The correct callback will be run when the existing connection attempt
// completes.
return;
}
target_service_ = service_uuid;
CreateGattConnectionImpl(std::move(service_uuid));
}
void BluetoothDevice::SetGattServicesDiscoveryComplete(bool complete) {
gatt_services_discovery_complete_ = complete;
}
bool BluetoothDevice::IsGattServicesDiscoveryComplete() const {
return !target_service_ && gatt_services_discovery_complete_;
}
std::vector<BluetoothRemoteGattService*> BluetoothDevice::GetGattServices()
const {
std::vector<BluetoothRemoteGattService*> services;
for (const auto& iter : gatt_services_)
services.push_back(iter.second.get());
return services;
}
BluetoothRemoteGattService* BluetoothDevice::GetGattService(
const std::string& identifier) const {
auto it = gatt_services_.find(identifier);
if (it == gatt_services_.end())
return nullptr;
return it->second.get();
}
std::string BluetoothDevice::GetIdentifier() const {
return GetAddress();
}
std::string BluetoothDevice::GetOuiPortionOfBluetoothAddress() const {
// Get the vendor part of the address: "00:11:22" for "00:11:22:33:44:55".
return GetAddress().substr(0, 8);
}
void BluetoothDevice::UpdateAdvertisementData(
int8_t rssi,
std::optional<uint8_t> flags,
UUIDList advertised_uuids,
std::optional<int8_t> tx_power,
ServiceDataMap service_data,
ManufacturerDataMap manufacturer_data) {
UpdateTimestamp();
inquiry_rssi_ = rssi;
advertising_data_flags_ = std::move(flags);
device_uuids_.ReplaceAdvertisedUUIDs(std::move(advertised_uuids));
inquiry_tx_power_ = std::move(tx_power);
service_data_ = std::move(service_data);
manufacturer_data_ = std::move(manufacturer_data);
}
void BluetoothDevice::ClearAdvertisementData() {
inquiry_rssi_.reset();
advertising_data_flags_.reset();
inquiry_tx_power_.reset();
device_uuids_.ClearAdvertisedUUIDs();
service_data_.clear();
manufacturer_data_.clear();
GetAdapter()->NotifyDeviceChanged(this);
}
std::vector<BluetoothRemoteGattService*> BluetoothDevice::GetPrimaryServices() {
std::vector<BluetoothRemoteGattService*> services;
DVLOG(2) << "Looking for services.";
for (BluetoothRemoteGattService* service : GetGattServices()) {
DVLOG(2) << "Service in cache: " << service->GetUUID().canonical_value();
if (service->IsPrimary()) {
services.push_back(service);
}
}
return services;
}
std::vector<BluetoothRemoteGattService*>
BluetoothDevice::GetPrimaryServicesByUUID(const BluetoothUUID& service_uuid) {
std::vector<BluetoothRemoteGattService*> services;
DVLOG(2) << "Looking for service: " << service_uuid.canonical_value();
for (BluetoothRemoteGattService* service : GetGattServices()) {
DVLOG(2) << "Service in cache: " << service->GetUUID().canonical_value();
if (service->GetUUID() == service_uuid && service->IsPrimary()) {
services.push_back(service);
}
}
return services;
}
#if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX)
void BluetoothDevice::SetBatteryInfo(const BatteryInfo& info) {
if (info.percentage) {
DCHECK_GE(info.percentage.value(), 0);
DCHECK_LE(info.percentage.value(), 100);
}
auto result = battery_info_map_.emplace(info.type, info);
// New info was inserted.
if (result.second) {
GetAdapter()->NotifyDeviceBatteryChanged(this, info.type);
return;
}
DCHECK_EQ(result.first->first, info.type);
// Existing item is the same as the item we are inserting, return early.
if (result.first->second == info)
return;
// Otherwise override existing element.
result.first->second = info;
GetAdapter()->NotifyDeviceBatteryChanged(this, info.type);
}
bool BluetoothDevice::RemoveBatteryInfo(const BatteryType& type) {
if (battery_info_map_.erase(type)) {
GetAdapter()->NotifyDeviceBatteryChanged(this, type);
return true;
}
return false;
}
std::optional<BatteryInfo> BluetoothDevice::GetBatteryInfo(
const BatteryType& type) const {
auto it = battery_info_map_.find(type);
if (it == battery_info_map_.end())
return std::nullopt;
return it->second;
}
std::vector<BatteryType> BluetoothDevice::GetAvailableBatteryTypes() {
std::vector<BatteryType> types;
for (auto& key_value : battery_info_map_) {
types.push_back(key_value.first);
}
return types;
}
#endif
bool BluetoothDevice::supports_service_specific_discovery() const {
return supports_service_specific_discovery_;
}
void BluetoothDevice::UpgradeToFullDiscovery() {
// Must be overridden by any subclass that sets
// |supports_service_specific_discovery_|.
NOTREACHED();
}
std::unique_ptr<BluetoothGattConnection>
BluetoothDevice::CreateBluetoothGattConnectionObject() {
return std::make_unique<BluetoothGattConnection>(adapter_, GetAddress());
}
void BluetoothDevice::DidConnectGatt(std::optional<ConnectErrorCode> error) {
if (error.has_value()) {
// Connection request should only be made if there are no active
// connections.
DCHECK(gatt_connections_.empty());
target_service_.reset();
// Callbacks may call back into this code. Move the callback list onto the
// stack to avoid potential re-entrancy bugs.
auto callbacks = std::move(create_gatt_connection_callbacks_);
for (auto& callback : callbacks)
std::move(callback).Run(/*connection=*/nullptr, error.value());
return;
}
// Callbacks may call back into this code. Move the callback list onto the
// stack to avoid potential re-entrancy bugs.
auto callbacks = std::move(create_gatt_connection_callbacks_);
for (auto& callback : callbacks) {
std::move(callback).Run(CreateBluetoothGattConnectionObject(),
/*error_code=*/std::nullopt);
}
GetAdapter()->NotifyDeviceChanged(this);
}
void BluetoothDevice::DidDisconnectGatt() {
// Pending calls to connect GATT are not expected, if they were then
// DidConnectGatt should have been called.
DCHECK(create_gatt_connection_callbacks_.empty());
target_service_.reset();
// Invalidate all BluetoothGattConnection objects.
for (BluetoothGattConnection* connection : gatt_connections_) {
connection->InvalidateConnectionReference();
}
gatt_connections_.clear();
GetAdapter()->NotifyDeviceChanged(this);
}
void BluetoothDevice::AddGattConnection(BluetoothGattConnection* connection) {
auto result = gatt_connections_.insert(connection);
DCHECK(result.second); // Check insert happened; there was no duplicate.
}
void BluetoothDevice::RemoveGattConnection(
BluetoothGattConnection* connection) {
size_t erased_count = gatt_connections_.erase(connection);
DCHECK(erased_count);
if (gatt_connections_.size() == 0)
DisconnectGatt();
}
void BluetoothDevice::SetAsExpiredForTesting() {
last_update_time_ = base::Time::NowFromSystemTime() -
(BluetoothAdapter::timeoutSec + base::Seconds(1));
}
void BluetoothDevice::Pair(PairingDelegate* pairing_delegate,
ConnectCallback callback) {
NOTREACHED();
}
void BluetoothDevice::UpdateTimestamp() {
last_update_time_ = base::Time::NowFromSystemTime();
}
base::Time BluetoothDevice::GetLastUpdateTime() const {
return last_update_time_;
}
// static
int8_t BluetoothDevice::ClampPower(int power) {
if (power < INT8_MIN) {
return INT8_MIN;
}
if (power > INT8_MAX) {
return INT8_MAX;
}
return static_cast<int8_t>(power);
}
} // namespace device
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