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// Copyright 2022 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/floss/bluetooth_advertisement_floss.h"
#include <iomanip>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/logging.h"
#include "base/observer_list.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "components/device_event_log/device_event_log.h"
#include "device/bluetooth/dbus/bluetooth_le_advertising_manager_client.h"
#include "device/bluetooth/floss/bluetooth_adapter_floss.h"
#include "device/bluetooth/floss/floss_dbus_manager.h"
namespace floss {
namespace {
constexpr FlossAdvertiserClient::AdvertiserId kInvalidAdvId = -1;
constexpr uint8_t kServiceData16BitUuid = 0x16;
constexpr int8_t kTxPowerNoPreference = 0x7f;
constexpr int32_t kUnlimitedDuration = 0;
constexpr int32_t kUnlimitedAdvEvents = 0;
void UnregisterFailure(device::BluetoothAdvertisement::ErrorCode error) {
LOG(ERROR)
<< "BluetoothAdvertisementFloss::Unregister failed with error code = "
<< error;
}
} // namespace
BluetoothAdvertisementFloss::BluetoothAdvertisementFloss(
std::unique_ptr<device::BluetoothAdvertisement::Data> data,
const uint16_t interval_ms,
scoped_refptr<BluetoothAdapterFloss> adapter) {
// Initializing advertising set parameters.
params_.discoverable = LeDiscoverableMode::kGeneralDiscoverable;
params_.connectable =
(data->type() ==
device::BluetoothAdvertisement::ADVERTISEMENT_TYPE_PERIPHERAL);
params_.scannable = false;
params_.is_legacy = true;
params_.is_anonymous = false;
// TODO: check BluetoothAdvertisement::Data.
params_.include_tx_power = false;
params_.primary_phy =
LePhy::kPhy1m; // For Legacy advertisement compatibility.
params_.secondary_phy = LePhy::kPhy1m;
params_.interval = (interval_ms * 8) / 5; // in 0.625 ms unit.
params_.tx_power_level = kTxPowerNoPreference;
params_.own_address_type =
params_.connectable ? OwnAddressType::kPublic : OwnAddressType::kRandom;
// Initializing advertise data.
std::optional<UUIDList> service_uuids = data->service_uuids();
if (service_uuids) {
for (auto& uuid : *service_uuids) {
adv_data_.service_uuids.emplace_back(uuid);
}
}
std::optional<ManufacturerData> manuf_data = data->manufacturer_data();
if (manuf_data) {
for (auto& [key, val] : *manuf_data) {
adv_data_.manufacturer_data.emplace(key, std::move(val));
}
}
std::optional<UUIDList> solicit_uuids = data->solicit_uuids();
if (solicit_uuids) {
for (auto& uuid : *service_uuids) {
adv_data_.solicit_uuids.emplace_back(uuid);
}
}
std::optional<ServiceData> service_data = data->service_data();
if (service_data) {
for (auto& [key, val] : *service_data) {
adv_data_.service_data.emplace(std::move(key), std::move(val));
}
}
// TODO: check BluetoothAdvertisement::Data.
adv_data_.include_tx_power_level = false;
adv_data_.include_device_name = false;
// Initializing scan response data.
std::optional<ScanResponseData> scan_response_data =
data->scan_response_data();
if (scan_response_data) {
params_.scannable = true;
for (auto& [type, val] : *scan_response_data) {
if (type == kServiceData16BitUuid) {
if (val.size() < 2)
continue;
uint16_t id = (val[1] << 8) | val[0];
std::stringstream stream;
stream << std::setfill('0') << std::setw(4) << std::hex << id;
device::BluetoothUUID uuid(stream.str());
std::vector<uint8_t> bytes(val.begin() + 2, val.end());
scan_rsp_.service_data.emplace(uuid.canonical_value(),
std::move(bytes));
} else {
BLUETOOTH_LOG(ERROR) << "Unsupported type: " << type;
}
}
scan_rsp_.include_tx_power_level = false;
scan_rsp_.include_device_name = false;
}
adv_id_ = kInvalidAdvId;
}
BluetoothAdvertisementFloss::~BluetoothAdvertisementFloss() {
Unregister(base::DoNothing(), base::BindOnce(&UnregisterFailure));
}
void BluetoothAdvertisementFloss::Unregister(SuccessCallback success_callback,
ErrorCallback error_callback) {
Stop(std::move(success_callback), std::move(error_callback));
}
void BluetoothAdvertisementFloss::Start(
SuccessCallback success_callback,
device::BluetoothAdapter::AdvertisementErrorCallback error_callback) {
if (adv_id_ != kInvalidAdvId) {
std::move(error_callback)
.Run(
device::BluetoothAdvertisement::ERROR_ADVERTISEMENT_ALREADY_EXISTS);
return;
}
FlossDBusManager::Get()->GetAdvertiserClient()->StartAdvertisingSet(
params_, adv_data_,
(params_.scannable ? std::optional<AdvertiseData>(scan_rsp_)
: std::nullopt),
std::nullopt, std::nullopt, kUnlimitedDuration, kUnlimitedAdvEvents,
base::BindOnce(&BluetoothAdvertisementFloss::OnStartSuccess,
weak_ptr_factory_.GetWeakPtr(),
std::move(success_callback)),
std::move(error_callback));
}
void BluetoothAdvertisementFloss::Stop(SuccessCallback success_callback,
ErrorCallback error_callback) {
if (adv_id_ == kInvalidAdvId) {
std::move(error_callback)
.Run(
device::BluetoothAdvertisement::ERROR_ADVERTISEMENT_DOES_NOT_EXIST);
return;
}
FlossDBusManager::Get()->GetAdvertiserClient()->StopAdvertisingSet(
adv_id_,
base::BindOnce(&BluetoothAdvertisementFloss::OnStopSuccess,
weak_ptr_factory_.GetWeakPtr(),
std::move(success_callback)),
std::move(error_callback));
}
void BluetoothAdvertisementFloss::SetAdvertisingInterval(
const uint16_t interval_ms,
SuccessCallback success_callback,
device::BluetoothAdapter::AdvertisementErrorCallback error_callback) {
if (adv_id_ == kInvalidAdvId) {
std::move(error_callback)
.Run(
device::BluetoothAdvertisement::ERROR_ADVERTISEMENT_DOES_NOT_EXIST);
return;
}
params_.interval = (interval_ms * 8) / 5; // in 0.625 ms unit.
FlossDBusManager::Get()->GetAdvertiserClient()->SetAdvertisingParameters(
adv_id_, params_,
base::BindOnce(
&BluetoothAdvertisementFloss::OnSetAdvertisingIntervalSuccess,
weak_ptr_factory_.GetWeakPtr(), std::move(success_callback)),
std::move(error_callback));
}
void BluetoothAdvertisementFloss::OnStartSuccess(
SuccessCallback success_callback,
FlossAdvertiserClient::AdvertiserId adv_id) {
adv_id_ = adv_id;
std::move(success_callback).Run();
}
void BluetoothAdvertisementFloss::OnStopSuccess(
SuccessCallback success_callback) {
std::move(success_callback).Run();
adv_id_ = kInvalidAdvId;
}
void BluetoothAdvertisementFloss::OnSetAdvertisingIntervalSuccess(
SuccessCallback success_callback) {
std::move(success_callback).Run();
}
} // namespace floss
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