Windows: add com helper

src/util/windows/com.cpp

@@ -0,0 +1,51 @@
+#include "com.hpp"
+#include "fastfetch.h"
+
+#include <stdlib.h>
+#include <synchapi.h>
+
+//https://learn.microsoft.com/en-us/windows/win32/wmisdk/example--getting-wmi-data-from-the-local-computer
+//https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/computer-system-hardware-classes
+static void CoUninitializeWrap()
+{
+    CoUninitialize();
+}
+
+static BOOL CALLBACK InitHandleFunction(FF_MAYBE_UNUSED PINIT_ONCE lpInitOnce, FF_MAYBE_UNUSED PVOID lpParameter, PVOID* lpContext)
+{
+    // Initialize COM
+    if (FAILED(CoInitializeEx(NULL, COINIT_MULTITHREADED)))
+    {
+        *lpContext = (PVOID) "CoInitializeEx() failed";
+        return FALSE;
+    }
+
+    // Set general COM security levels
+    if (FAILED(CoInitializeSecurity(
+        NULL,
+        -1,                          // COM authentication
+        NULL,                        // Authentication services
+        NULL,                        // Reserved
+        RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication
+        RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
+        NULL,                        // Authentication info
+        EOAC_NONE,                   // Additional capabilities
+        NULL                         // Reserved
+    )))
+    {
+        CoUninitialize();
+        *lpContext = (PVOID) "CoInitializeSecurity() failed";
+        return FALSE;
+    }
+
+    atexit(CoUninitializeWrap);
+    return TRUE;
+}
+
+const char* ffInitCom(void)
+{
+    const char* error = NULL;
+    static INIT_ONCE s_InitOnce;
+    InitOnceExecuteOnce(&s_InitOnce, &InitHandleFunction, NULL, (void**)&error);
+    return error;
+}