Enter your USB Vendor ID and print the "Friendly Name"

find-usb-windows.go

package main

/*
#cgo LDFLAGS: -lSetupapi

#ifdef __MINGW32__
#include <ntdef.h>
#endif
#include <windows.h>
#include <setupapi.h>
*/
import "C"

import (
	"fmt"
	"strings"
	"unsafe"
)

type callCFn func(buf unsafe.Pointer, bufSize *C.DWORD) unsafe.Pointer

// simple helper function for this windows
// "call a function twice to get the amount of space that needs to be allocated" stuff
func getCString(fnCall callCFn) string {
	var requiredSize C.DWORD
	fnCall(nil, &requiredSize)
	if requiredSize <= 0 {
		return ""
	}

	buffer := C.malloc((C.size_t)(requiredSize))
	defer C.free(buffer)

	strPt := fnCall(buffer, &requiredSize)

	return C.GoString((*C.char)(strPt))
}

func FindFriendlyNameOfVendorId(expectedVID string) {

	var ClassGuid C.GUID

	cStr := C.CString("USB")
	defer C.free(unsafe.Pointer(cStr))

	deviceInfoSet := C.SetupDiGetClassDevs(&ClassGuid, (*C.CHAR)(cStr), nil, C.DIGCF_PRESENT|C.DIGCF_ALLCLASSES)
	defer C.SetupDiDestroyDeviceInfoList(deviceInfoSet)

	var i C.DWORD
	var devinfoData C.SP_DEVINFO_DATA
	devinfoData.cbSize = C.DWORD(unsafe.Sizeof(devinfoData))

	for i = 0; ; i++ {

		if res := C.SetupDiEnumDeviceInfo(deviceInfoSet, i, &devinfoData); res == 0 {
			break
		}

		classStr := getCString(func(buffer unsafe.Pointer, size *C.DWORD) unsafe.Pointer {
			C.SetupDiGetDeviceRegistryProperty(deviceInfoSet, &devinfoData, C.SPDRP_HARDWAREID, nil, (*C.BYTE)(buffer), *size, size)
			return buffer
		})

		if strings.Contains(classStr, expectedVID) {
			friendlyName := getCString(func(buffer unsafe.Pointer, size *C.DWORD) unsafe.Pointer {
				C.SetupDiGetDeviceRegistryProperty(deviceInfoSet, &devinfoData, C.SPDRP_FRIENDLYNAME, nil, (*C.BYTE)(buffer), *size, size)
				return buffer
			})

			fmt.Println(friendlyName)
		}
	}
}

func main() {

	FindFriendlyNameOfVendorId("VID_XXXX")
}