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#include "bluetooth.h"
#include "common/library.h"
#include "common/mallocHelper.h"
#include "common/windows/unicode.h"
#define INITGUID
#include <windows.h>
#include <bluetoothapis.h>
#include <cfgmgr32.h>
#include <devpkey.h>
#pragma GCC diagnostic ignored "-Wpointer-sign"
// https://github.com/wine-mirror/wine/blob/ab6f4584b89f28504b0b277c0b4c723a86b4d6b7/include/ddk/bthguid.h#L4
/* DEVPROP_TYPE_STRING */
DEFINE_DEVPROPKEY(DEVPKEY_Bluetooth_DeviceAddress, 0x2bd67d8b, 0x8beb, 0x48d5, 0x87, 0xe0, 0x6c, 0xda, 0x34, 0x28, 0x04, 0x0a, 1);
/* DEVPROP_TYPE_UINT32 */
DEFINE_DEVPROPKEY(DEVPKEY_Bluetooth_ClassOfDevice, 0x2bd67d8b, 0x8beb, 0x48d5, 0x87, 0xe0, 0x6c, 0xda, 0x34, 0x28, 0x04, 0x0a, 10);
/* DEVPROP_TYPE_FILETIME */
DEFINE_DEVPROPKEY(DEVPKEY_Bluetooth_LastConnectedTime, 0x2bd67d8b, 0x8beb, 0x48d5, 0x87, 0xe0, 0x6c, 0xda, 0x34, 0x28, 0x04, 0x0a, 11);
/* DEVPROP_TYPE_GUID */
DEFINE_DEVPROPKEY(DEVPKEY_Bluetooth_ServiceGUID, 0x2bd67d8b, 0x8beb, 0x48d5, 0x87, 0xe0, 0x6c, 0xda, 0x34, 0x28, 0x04, 0x0a, 2);
/* DEVPROP_TYPE_UINT8 */
DEFINE_DEVPROPKEY(DEVPKEY_Bluetooth_BatteryLevel, 0x104ea319, 0x6ee2, 0x4701, 0xbd, 0x47, 0x8d, 0xdb, 0xf4, 0x25, 0xbb, 0xe5, 2);
// TODO: use CM API to fetch bluetooth devices instead of BluetoothFindFirstDevice, if we find DEVPKEY_Bluetooth_IsConnected or similar
#define GUID_DEVCLASS_BLUETOOTH_STRING L"{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}" // Found in <devguid.h>
#define GUID_DEVCLASS_MEDIA_STRING L"{4d36e96c-e325-11ce-bfc1-08002be10318}" // Found in <devguid.h>
static const char* ffBluetoothDetectBattery(FFlist* devices) {
ULONG idListLength = 0;
CONFIGRET status = CM_Get_Device_ID_List_SizeW(&idListLength, GUID_DEVCLASS_MEDIA_STRING, CM_GETIDLIST_FILTER_PRESENT);
if (status != CR_SUCCESS) {
return "CM_Get_Device_ID_List_SizeW failed";
}
if (idListLength == 0) {
return NULL;
}
wchar_t* FF_AUTO_FREE idList = (wchar_t*) malloc((size_t) idListLength * sizeof(wchar_t));
if (!idList) {
return "malloc() failed";
}
status = CM_Get_Device_ID_ListW(GUID_DEVCLASS_MEDIA_STRING, idList, idListLength, CM_GETIDLIST_FILTER_PRESENT);
if (status != CR_SUCCESS) {
return "CM_Get_Device_ID_ListW failed";
}
for (const wchar_t* deviceId = idList; *deviceId; deviceId += wcslen(deviceId) + 1) {
DEVINST devInst = 0;
// Hands-Free profile service; headsets often expose battery level through this media device node rather than the Bluetooth device node
// BthHFEnum
if (CM_Locate_DevNodeW(&devInst, (DEVINSTID_W) deviceId, CM_LOCATE_DEVNODE_NORMAL) != CR_SUCCESS) {
continue;
}
uint8_t battery = 0;
{
DEVPROPTYPE devPropertyType = DEVPROP_TYPE_EMPTY;
ULONG propertySize = sizeof(battery);
if (CM_Get_DevNode_PropertyW(devInst, &DEVPKEY_Bluetooth_BatteryLevel, &devPropertyType, (PBYTE) &battery, &propertySize, 0) != CR_SUCCESS || devPropertyType != DEVPROP_TYPE_BYTE || propertySize != sizeof(battery)) {
continue;
}
}
WCHAR deviceAddress[13]; // 6 bytes in hex + null terminator
{
DEVPROPTYPE devPropertyType = DEVPROP_TYPE_EMPTY;
ULONG propertySize = sizeof(deviceAddress);
if (CM_Get_DevNode_PropertyW(devInst, &DEVPKEY_Bluetooth_DeviceAddress, &devPropertyType, (PBYTE) deviceAddress, &propertySize, 0) != CR_SUCCESS || devPropertyType != DEVPROP_TYPE_STRING || propertySize != sizeof(deviceAddress)) {
continue;
}
}
FF_LIST_FOR_EACH (FFBluetoothResult, bt, *devices) {
if (deviceAddress[0] == bt->address.chars[0] &&
deviceAddress[1] == bt->address.chars[1] &&
deviceAddress[2] == bt->address.chars[3] &&
deviceAddress[3] == bt->address.chars[4] &&
deviceAddress[4] == bt->address.chars[6] &&
deviceAddress[5] == bt->address.chars[7] &&
deviceAddress[6] == bt->address.chars[9] &&
deviceAddress[7] == bt->address.chars[10] &&
deviceAddress[8] == bt->address.chars[12] &&
deviceAddress[9] == bt->address.chars[13] &&
deviceAddress[10] == bt->address.chars[15] &&
deviceAddress[11] == bt->address.chars[16]) {
bt->battery = battery;
break;
}
}
}
return NULL;
}
const char* ffDetectBluetooth(FFBluetoothOptions* options, FFlist* devices /* FFBluetoothResult */) {
FF_LIBRARY_LOAD_MESSAGE(bluetoothapis, "bluetoothapis.dll", 1)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(bluetoothapis, BluetoothFindFirstDevice)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(bluetoothapis, BluetoothFindNextDevice)
FF_LIBRARY_LOAD_SYMBOL_MESSAGE(bluetoothapis, BluetoothFindDeviceClose)
BLUETOOTH_DEVICE_INFO btdi = {
.dwSize = sizeof(btdi)
};
HBLUETOOTH_DEVICE_FIND hFind = ffBluetoothFindFirstDevice(&(BLUETOOTH_DEVICE_SEARCH_PARAMS) {
.fReturnConnected = TRUE,
.fReturnRemembered = options->showDisconnected,
.fReturnAuthenticated = options->showDisconnected,
.dwSize = sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS) },
&btdi);
if (!hFind) {
if (GetLastError() == ERROR_NO_MORE_ITEMS) {
return NULL;
}
return "BluetoothFindFirstDevice() failed";
}
do {
if (!options->showDisconnected && !btdi.fConnected) {
continue;
}
FFBluetoothResult* device = FF_LIST_ADD(FFBluetoothResult, *devices);
ffStrbufInitWS(&device->name, btdi.szName);
ffStrbufInitF(&device->address, "%02X:%02X:%02X:%02X:%02X:%02X", btdi.Address.rgBytes[5], btdi.Address.rgBytes[4], btdi.Address.rgBytes[3], btdi.Address.rgBytes[2], btdi.Address.rgBytes[1], btdi.Address.rgBytes[0]);
ffStrbufInit(&device->type);
device->battery = 0;
device->connected = !!btdi.fConnected;
// https://btprodspecificationrefs.blob.core.windows.net/assigned-numbers/Assigned%20Number%20Types/Assigned%20Numbers.pdf
if (BitTest(&btdi.ulClassofDevice, 13)) {
ffStrbufAppendS(&device->type, "Limited Discoverable Mode, ");
}
if (BitTest(&btdi.ulClassofDevice, 14)) {
ffStrbufAppendS(&device->type, "LE audio, ");
}
if (BitTest(&btdi.ulClassofDevice, 15)) {
ffStrbufAppendS(&device->type, "Reserved for future use, ");
}
if (BitTest(&btdi.ulClassofDevice, 16)) {
ffStrbufAppendS(&device->type, "Positioning, ");
}
if (BitTest(&btdi.ulClassofDevice, 17)) {
ffStrbufAppendS(&device->type, "Networking, ");
}
if (BitTest(&btdi.ulClassofDevice, 18)) {
ffStrbufAppendS(&device->type, "Rendering, ");
}
if (BitTest(&btdi.ulClassofDevice, 19)) {
ffStrbufAppendS(&device->type, "Capturing, ");
}
if (BitTest(&btdi.ulClassofDevice, 20)) {
ffStrbufAppendS(&device->type, "Object Transfer, ");
}
if (BitTest(&btdi.ulClassofDevice, 21)) {
ffStrbufAppendS(&device->type, "Audio, ");
}
if (BitTest(&btdi.ulClassofDevice, 22)) {
ffStrbufAppendS(&device->type, "Telephony, ");
}
if (BitTest(&btdi.ulClassofDevice, 23)) {
ffStrbufAppendS(&device->type, "Information, ");
}
if (device->type.length == 0) {
uint32_t majorDeviceClasses = (btdi.ulClassofDevice >> 8) & ~(UINT32_MAX << 5);
switch (majorDeviceClasses) {
case 0b00000:
ffStrbufAppendS(&device->type, "Miscellaneous");
break;
case 0b00001:
ffStrbufAppendS(&device->type, "Computer");
break;
case 0b00010:
ffStrbufAppendS(&device->type, "Phone");
break;
case 0b00011:
ffStrbufAppendS(&device->type, "LAN/Network Access point");
break;
case 0b00100:
ffStrbufAppendS(&device->type, "Audio/Video");
break;
case 0b00101:
ffStrbufAppendS(&device->type, "Peripheral");
break;
case 0b00110:
ffStrbufAppendS(&device->type, "Imaging");
break;
case 0b00111:
ffStrbufAppendS(&device->type, "Wearable");
break;
case 0b01000:
ffStrbufAppendS(&device->type, "Toy");
break;
case 0b01001:
ffStrbufAppendS(&device->type, "Health");
break;
case 0b11111:
ffStrbufAppendS(&device->type, "Uncategorized");
break;
default:
ffStrbufAppendS(&device->type, "Unknown");
break;
}
} else {
ffStrbufTrimRight(&device->type, ' ');
ffStrbufTrimRight(&device->type, ',');
}
} while (ffBluetoothFindNextDevice(hFind, &btdi));
ffBluetoothFindDeviceClose(hFind);
if (devices->length > 0) {
ffBluetoothDetectBattery(devices);
}
return NULL;
}
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