62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
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*/
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package conf
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import (
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"log"
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"golang.org/x/sys/windows"
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)
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var haveStartedWatchingConfigDir bool
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func startWatchingConfigDir() {
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if haveStartedWatchingConfigDir {
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return
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}
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haveStartedWatchingConfigDir = true
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go func() {
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h := windows.InvalidHandle
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defer func() {
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if h != windows.InvalidHandle {
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windows.FindCloseChangeNotification(h)
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}
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haveStartedWatchingConfigDir = false
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}()
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startover:
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configFileDir, err := tunnelConfigurationsDirectory()
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if err != nil {
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return
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}
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h, err = windows.FindFirstChangeNotification(configFileDir, true, windows.FILE_NOTIFY_CHANGE_FILE_NAME|windows.FILE_NOTIFY_CHANGE_DIR_NAME|windows.FILE_NOTIFY_CHANGE_ATTRIBUTES|windows.FILE_NOTIFY_CHANGE_SIZE|windows.FILE_NOTIFY_CHANGE_LAST_WRITE|windows.FILE_NOTIFY_CHANGE_LAST_ACCESS|windows.FILE_NOTIFY_CHANGE_CREATION|windows.FILE_NOTIFY_CHANGE_SECURITY)
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if err != nil {
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log.Printf("Unable to monitor config directory: %v", err)
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return
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}
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for {
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s, err := windows.WaitForSingleObject(h, windows.INFINITE)
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if err != nil || s == windows.WAIT_FAILED {
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log.Printf("Unable to wait on config directory watcher: %v", err)
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windows.FindCloseChangeNotification(h)
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h = windows.InvalidHandle
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goto startover
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}
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for cb := range storeCallbacks {
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cb.cb()
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}
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err = windows.FindNextChangeNotification(h)
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if err != nil {
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log.Printf("Unable to monitor config directory again: %v", err)
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windows.FindCloseChangeNotification(h)
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h = windows.InvalidHandle
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goto startover
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}
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}
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}()
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}
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