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// 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 "device/bluetooth/bluetooth_low_energy_win_fake.h"
#include "base/strings/stringprintf.h"
namespace {
const char kPlatformNotSupported[] =
"Bluetooth Low energy is only supported on Windows 8 and later.";
} // namespace
namespace device {
namespace win {
BLEDevice::BLEDevice() {}
BLEDevice::~BLEDevice() {}
BLEGattService::BLEGattService() {}
BLEGattService::~BLEGattService() {}
BLEGattCharacteristic::BLEGattCharacteristic() {}
BLEGattCharacteristic::~BLEGattCharacteristic() {}
BLEGattDescriptor::BLEGattDescriptor() {}
BLEGattDescriptor::~BLEGattDescriptor() {}
BluetoothLowEnergyWrapperFake::BluetoothLowEnergyWrapperFake() {}
BluetoothLowEnergyWrapperFake::~BluetoothLowEnergyWrapperFake() {}
bool BluetoothLowEnergyWrapperFake::EnumerateKnownBluetoothLowEnergyDevices(
ScopedVector<BluetoothLowEnergyDeviceInfo>* devices,
std::string* error) {
if (!IsBluetoothLowEnergySupported()) {
*error = kPlatformNotSupported;
return false;
}
for (auto& device : simulated_devices_) {
BluetoothLowEnergyDeviceInfo* device_info =
new BluetoothLowEnergyDeviceInfo();
*device_info = *(device.second->device_info);
devices->push_back(device_info);
}
return true;
}
bool BluetoothLowEnergyWrapperFake::
EnumerateKnownBluetoothLowEnergyGattServiceDevices(
ScopedVector<BluetoothLowEnergyDeviceInfo>* devices,
std::string* error) {
if (!IsBluetoothLowEnergySupported()) {
*error = kPlatformNotSupported;
return false;
}
for (auto& device : simulated_devices_) {
for (auto& service : device.second->primary_services) {
BluetoothLowEnergyDeviceInfo* device_info =
new BluetoothLowEnergyDeviceInfo();
*device_info = *(device.second->device_info);
base::string16 path = GenerateBLEGattServiceDevicePath(
device.second->device_info->path.value(),
service.second->service_info->AttributeHandle);
device_info->path = base::FilePath(path);
devices->push_back(device_info);
}
}
return true;
}
bool BluetoothLowEnergyWrapperFake::EnumerateKnownBluetoothLowEnergyServices(
const base::FilePath& device_path,
ScopedVector<BluetoothLowEnergyServiceInfo>* services,
std::string* error) {
if (!IsBluetoothLowEnergySupported()) {
*error = kPlatformNotSupported;
return false;
}
base::string16 device_address =
ExtractDeviceAddressFromDevicePath(device_path.value());
base::string16 service_attribute_handle =
ExtractServiceAttributeHandleFromDevicePath(device_path.value());
BLEDevicesMap::iterator it_d = simulated_devices_.find(
std::string(device_address.begin(), device_address.end()));
CHECK(it_d != simulated_devices_.end());
// |service_attribute_handle| is empty means |device_path| is a BLE device
// path, otherwise it is a BLE GATT service device path.
if (service_attribute_handle.empty()) {
// Return all primary services for BLE device.
for (auto& primary_service : it_d->second->primary_services) {
BluetoothLowEnergyServiceInfo* service_info =
new BluetoothLowEnergyServiceInfo();
service_info->uuid = primary_service.second->service_info->ServiceUuid;
service_info->attribute_handle =
primary_service.second->service_info->AttributeHandle;
services->push_back(service_info);
}
} else {
// Return corresponding GATT service for BLE GATT service device.
BLEGattServicesMap::iterator it_s =
it_d->second->primary_services.find(std::string(
service_attribute_handle.begin(), service_attribute_handle.end()));
CHECK(it_s != it_d->second->primary_services.end());
BluetoothLowEnergyServiceInfo* service_info =
new BluetoothLowEnergyServiceInfo();
service_info->uuid = it_s->second->service_info->ServiceUuid;
service_info->attribute_handle =
it_s->second->service_info->AttributeHandle;
services->push_back(service_info);
}
return true;
}
BLEDevice* BluetoothLowEnergyWrapperFake::SimulateBLEDevice(
std::string device_name,
BLUETOOTH_ADDRESS device_address) {
BLEDevice* device = new BLEDevice();
BluetoothLowEnergyDeviceInfo* device_info =
new BluetoothLowEnergyDeviceInfo();
std::string string_device_address =
BluetoothAddressToCanonicalString(device_address);
device_info->path =
base::FilePath(GenerateBLEDevicePath(string_device_address));
device_info->friendly_name = device_name;
device_info->address = device_address;
device->device_info.reset(device_info);
simulated_devices_[string_device_address] = make_scoped_ptr(device);
return device;
}
BLEGattService* BluetoothLowEnergyWrapperFake::SimulateBLEGattService(
BLEDevice* device,
std::string uuid) {
CHECK(device);
BLEGattService* service = new BLEGattService();
PBTH_LE_GATT_SERVICE service_info = new BTH_LE_GATT_SERVICE[1];
std::string string_device_address =
BluetoothAddressToCanonicalString(device->device_info->address);
service_info->AttributeHandle =
GenerateAUniqueAttributeHandle(string_device_address);
service_info->ServiceUuid = CanonicalStringToBTH_LE_UUID(uuid);
service->service_info.reset(service_info);
device->primary_services[std::to_string(service_info->AttributeHandle)] =
make_scoped_ptr(service);
return service;
}
USHORT BluetoothLowEnergyWrapperFake::GenerateAUniqueAttributeHandle(
std::string device_address) {
scoped_ptr<std::set<USHORT>>& set_of_ushort =
attribute_handle_table_[device_address];
if (set_of_ushort) {
USHORT max_attribute_handle = *set_of_ushort->rbegin();
if (max_attribute_handle < 0xFFFF) {
USHORT new_attribute_handle = max_attribute_handle + 1;
set_of_ushort->insert(new_attribute_handle);
return new_attribute_handle;
} else {
USHORT i = 1;
for (; i < 0xFFFF; i++) {
if (set_of_ushort->find(i) == set_of_ushort->end())
break;
}
if (i >= 0xFFFF)
return 0;
set_of_ushort->insert(i);
return i;
}
}
USHORT smallest_att_handle = 1;
std::set<USHORT>* new_set = new std::set<USHORT>();
new_set->insert(smallest_att_handle);
set_of_ushort.reset(new_set);
return smallest_att_handle;
}
base::string16 BluetoothLowEnergyWrapperFake::GenerateBLEDevicePath(
std::string device_address) {
return base::string16(device_address.begin(), device_address.end());
}
base::string16 BluetoothLowEnergyWrapperFake::GenerateBLEGattServiceDevicePath(
base::string16 resident_device_path,
USHORT service_attribute_handle) {
std::string sub_path = std::to_string(service_attribute_handle);
return resident_device_path + L"/" +
base::string16(sub_path.begin(), sub_path.end());
}
base::string16
BluetoothLowEnergyWrapperFake::ExtractDeviceAddressFromDevicePath(
base::string16 path) {
std::size_t found = path.find('/');
if (found != base::string16::npos) {
return path.substr(0, found - 1);
}
return path;
}
base::string16
BluetoothLowEnergyWrapperFake::ExtractServiceAttributeHandleFromDevicePath(
base::string16 path) {
std::size_t found = path.find('/');
if (found == base::string16::npos)
return base::string16();
return path.substr(found + 1);
}
BTH_LE_UUID BluetoothLowEnergyWrapperFake::CanonicalStringToBTH_LE_UUID(
std::string uuid) {
BTH_LE_UUID win_uuid;
// Only short UUIDs (4 hex digits) have beened used in BluetoothTest right
// now. Need fix after using long UUIDs.
win_uuid.IsShortUuid = true;
unsigned int data[1];
int result = sscanf_s(uuid.c_str(), "%04x", &data[0]);
CHECK(result == 1);
win_uuid.Value.ShortUuid = data[0];
return win_uuid;
}
std::string BluetoothLowEnergyWrapperFake::BluetoothAddressToCanonicalString(
const BLUETOOTH_ADDRESS& btha) {
std::string result = base::StringPrintf(
"%02X:%02X:%02X:%02X:%02X:%02X", btha.rgBytes[5], btha.rgBytes[4],
btha.rgBytes[3], btha.rgBytes[2], btha.rgBytes[1], btha.rgBytes[0]);
return result;
}
} // namespace win
} // namespace device
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