1 files changed, 50 insertions, 0 deletions
diff --git a/driver/wintunremoval_windows.go b/driver/wintunremoval_windows.go
new file mode 100644
index 00000000..ab51d989
--- /dev/null
+++ b/driver/wintunremoval_windows.go
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019-2022 WireGuard LLC. All Rights Reserved.
+ */
+
+package driver
+
+import (
+	"path/filepath"
+
+	"golang.org/x/sys/windows"
+)
+
+func UninstallLegacyWintun() error {
+	deviceClassNetGUID := &windows.GUID{0x4d36e972, 0xe325, 0x11ce, [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
+	devInfo, err := windows.SetupDiCreateDeviceInfoListEx(deviceClassNetGUID, 0, "")
+	if err != nil {
+		return err
+	}
+	defer devInfo.Close()
+	devInfoData, err := devInfo.CreateDeviceInfo("Wintun", deviceClassNetGUID, "", 0, windows.DICD_GENERATE_ID)
+	if err != nil {
+		return err
+	}
+	err = devInfo.SetDeviceRegistryProperty(devInfoData, windows.SPDRP_HARDWAREID, []byte("W\x00i\x00n\x00t\x00u\x00n\x00\x00\x00\x00\x00"))
+	if err != nil {
+		return err
+	}
+	err = devInfo.BuildDriverInfoList(devInfoData, windows.SPDIT_COMPATDRIVER)
+	if err != nil {
+		return err
+	}
+	defer devInfo.DestroyDriverInfoList(devInfoData, windows.SPDIT_COMPATDRIVER)
+	var lastError error
+	for i := 0; ; i++ {
+		drvInfoData, err := devInfo.EnumDriverInfo(devInfoData, windows.SPDIT_COMPATDRIVER, i)
+		if err != nil {
+			if err == windows.ERROR_NO_MORE_ITEMS {
+				break
+			}
+			continue
+		}
+		drvInfoDetailData, err := devInfo.DriverInfoDetail(devInfoData, drvInfoData)
+		if err != nil {
+			continue
+		}
+		lastError = windows.SetupUninstallOEMInf(filepath.Base(drvInfoDetailData.InfFileName()), 0)
+	}
+	return lastError
+}