From 85599fcf53232f2c753d8660c70f0b7dd3d4c0b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <carter.li@eoitek.com>
Date: Tue, 24 Jan 2023 21:01:21 +0800
Subject: [PATCH] Bluetooth (Windows): add support

Limitation: no HLE devices, no battery level
---
 CMakeLists.txt                              |   3 +-
 src/detection/bluetooth/bluetooth_windows.c | 109 ++++++++++++++++++++
 2 files changed, 111 insertions(+), 1 deletion(-)
 create mode 100644 src/detection/bluetooth/bluetooth_windows.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47543fab6..d585a6b1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -477,7 +477,7 @@ elseif(WIN32)
         src/common/processing_windows.c
         src/detection/battery/battery_windows.c
         src/detection/bios/bios_windows.c
-        src/detection/bluetooth/bluetooth_nosupport.c
+        src/detection/bluetooth/bluetooth_windows.c
         src/detection/board/board_windows.c
         src/detection/brightness/brightness_windows.cpp
         src/detection/chassis/chassis_nosupport.c
@@ -682,6 +682,7 @@ if(APPLE)
 elseif(WIN32)
     target_compile_definitions(libfastfetch PRIVATE -D_WIN32_WINNT=0x0601)
     target_link_libraries(libfastfetch
+        PRIVATE "bthprops"
         PRIVATE "dwmapi"
         PRIVATE "gdi32"
         PRIVATE "iphlpapi"
diff --git a/src/detection/bluetooth/bluetooth_windows.c b/src/detection/bluetooth/bluetooth_windows.c
new file mode 100644
index 000000000..61af30d67
--- /dev/null
+++ b/src/detection/bluetooth/bluetooth_windows.c
@@ -0,0 +1,109 @@
+#include "bluetooth.h"
+#include "util/windows/unicode.h"
+
+#include <bluetoothapis.h>
+
+void ffDetectBluetoothImpl(FF_MAYBE_UNUSED const FFinstance* instance, FFBluetoothResult* bluetooth)
+{
+    BLUETOOTH_DEVICE_SEARCH_PARAMS btsp = {
+        .fReturnConnected = TRUE,
+        .fReturnRemembered = TRUE,
+        .fReturnAuthenticated = TRUE,
+        .fReturnUnknown = TRUE,
+        .dwSize = sizeof(btsp)
+    };
+
+    BLUETOOTH_DEVICE_INFO btdi = {
+        .dwSize = sizeof(btdi)
+    };
+    HBLUETOOTH_DEVICE_FIND hFind = BluetoothFindFirstDevice(&btsp, &btdi);
+    if(!hFind)
+        ffStrbufAppendS(&bluetooth->error, "BluetoothFindFirstDevice() failed or no devices found");
+
+    do {
+        FFBluetoothDevice* device = ffListAdd(&bluetooth->devices);
+        ffStrbufInit(&device->name);
+        ffStrbufInit(&device->address);
+        ffStrbufInit(&device->type);
+        device->battery = 0;
+        device->connected = !!btdi.fConnected;
+
+        ffStrbufSetWS(&device->name, btdi.szName);
+        for (uint32_t i = 0; i < sizeof(btdi.Address.rgBytes) / sizeof(btdi.Address.rgBytes); ++i)
+            ffStrbufAppendF(&device->address, "%X:", btdi.Address.rgBytes[i]);
+        ffStrbufTrimRight(&device->name, ':');
+        //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 (BluetoothFindNextDevice(hFind, &btdi));
+}