96 lines
2.2 KiB
Go
96 lines
2.2 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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"errors"
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"io"
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"log"
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"os"
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"path/filepath"
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"strings"
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"sync"
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"time"
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"golang.org/x/sys/windows"
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)
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var migrating sync.Mutex
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var lastMigrationTimer *time.Timer
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func MigrateUnencryptedConfigs() { migrateUnencryptedConfigs(3) }
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func migrateUnencryptedConfigs(sharingBase int) {
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migrating.Lock()
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defer migrating.Unlock()
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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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files, err := os.ReadDir(configFileDir)
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if err != nil {
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return
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}
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ignoreSharingViolations := false
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for _, file := range files {
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path := filepath.Join(configFileDir, file.Name())
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name := filepath.Base(file.Name())
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if len(name) <= len(configFileUnencryptedSuffix) || !strings.HasSuffix(name, configFileUnencryptedSuffix) {
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continue
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}
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if !file.Type().IsRegular() {
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continue
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}
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info, err := file.Info()
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if err != nil {
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continue
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}
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if info.Mode().Perm()&0444 == 0 {
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continue
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}
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var bytes []byte
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var config *Config
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// We don't use os.ReadFile, because we actually want RDWR, so that we can take advantage
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// of Windows file locking for ensuring the file is finished being written.
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f, err := os.OpenFile(path, os.O_RDWR, 0)
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if err != nil {
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if errors.Is(err, windows.ERROR_SHARING_VIOLATION) {
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if ignoreSharingViolations {
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continue
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} else if sharingBase > 0 {
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if lastMigrationTimer != nil {
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lastMigrationTimer.Stop()
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}
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lastMigrationTimer = time.AfterFunc(time.Second/time.Duration(sharingBase*sharingBase), func() { migrateUnencryptedConfigs(sharingBase - 1) })
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ignoreSharingViolations = true
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continue
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}
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}
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goto error
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}
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bytes, err = io.ReadAll(f)
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f.Close()
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if err != nil {
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goto error
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}
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config, err = FromWgQuickWithUnknownEncoding(string(bytes), strings.TrimSuffix(name, configFileUnencryptedSuffix))
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if err != nil {
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goto error
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}
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err = config.Save(false)
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if err != nil {
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goto error
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}
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err = os.Remove(path)
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if err != nil {
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log.Printf("Unable to remove old path %#q: %v", path, err)
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}
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continue
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error:
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log.Printf("Unable to ingest and encrypt %#q: %v", path, err)
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}
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}
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