/* SPDX-License-Identifier: MIT * * Copyright (C) 2019 WireGuard LLC. All Rights Reserved. */ package conf import ( "errors" "os" "path/filepath" "unsafe" "golang.org/x/sys/windows" ) //sys coTaskMemFree(pointer uintptr) = ole32.CoTaskMemFree //sys shGetKnownFolderPath(id *windows.GUID, flags uint32, token windows.Handle, path **uint16) (err error) [failretval!=0] = shell32.SHGetKnownFolderPath var folderIDLocalAppData = windows.GUID{0xf1b32785, 0x6fba, 0x4fcf, [8]byte{0x9d, 0x55, 0x7b, 0x8e, 0x7f, 0x15, 0x70, 0x91}} const kfFlagCreate = 0x00008000 var cachedConfigFileDir string var cachedRootDir string func tunnelConfigurationsDirectory() (string, error) { if cachedConfigFileDir != "" { return cachedConfigFileDir, nil } root, err := RootDirectory() if err != nil { return "", err } c := filepath.Join(root, "Configurations") err = os.MkdirAll(c, os.ModeDir|0700) if err != nil { return "", err } cachedConfigFileDir = c return cachedConfigFileDir, nil } func RootDirectory() (string, error) { if cachedRootDir != "" { return cachedRootDir, nil } processToken, err := windows.OpenCurrentProcessToken() if err != nil { return "", err } defer processToken.Close() var path *uint16 err = shGetKnownFolderPath(&folderIDLocalAppData, kfFlagCreate, windows.Handle(processToken), &path) if err != nil { return "", err } defer coTaskMemFree(uintptr(unsafe.Pointer(path))) root := windows.UTF16ToString((*[windows.MAX_LONG_PATH + 1]uint16)(unsafe.Pointer(path))[:]) if len(root) == 0 { return "", errors.New("Unable to determine configuration directory") } c := filepath.Join(root, "WireGuard") err = os.MkdirAll(c, os.ModeDir|0700) if err != nil { return "", err } cachedRootDir = c return cachedRootDir, nil }