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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2020 WireGuard LLC. All Rights Reserved.
*/
package conf
import (
"fmt"
"io/ioutil"
"log"
"path/filepath"
"regexp"
"strings"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
"golang.org/x/sys/windows/svc/mgr"
)
func maybeMigrateConfiguration(c string) {
if disableAutoMigration {
return
}
oldRoot, err := windows.KnownFolderPath(windows.FOLDERID_LocalAppData, windows.KF_FLAG_DEFAULT)
if err != nil {
return
}
oldC := filepath.Join(oldRoot, "WireGuard", "Configurations")
files, err := ioutil.ReadDir(oldC)
if err != nil {
return
}
pendingDeletion := make(map[string]bool)
if key, err := registry.OpenKey(registry.LOCAL_MACHINE, `SYSTEM\CurrentControlSet\Control\Session Manager`, registry.READ); err == nil {
if ntPaths, _, err := key.GetStringsValue("PendingFileRenameOperations"); err == nil {
for _, ntPath := range ntPaths {
pendingDeletion[strings.ToLower(strings.TrimPrefix(ntPath, `\??\`))] = true
}
}
key.Close()
}
migratedConfigs := make(map[string]string)
for i := range files {
if files[i].IsDir() {
continue
}
fileName := files[i].Name()
oldPath := filepath.Join(oldC, fileName)
if pendingDeletion[strings.ToLower(oldPath)] {
continue
}
oldConfig, err := ioutil.ReadFile(oldPath)
if err != nil {
continue
}
newPath := filepath.Join(c, fileName)
err = writeEncryptedFile(newPath, oldConfig)
if err != nil {
continue
}
oldPath16, err := windows.UTF16PtrFromString(oldPath)
if err == nil {
windows.MoveFileEx(oldPath16, nil, windows.MOVEFILE_DELAY_UNTIL_REBOOT)
}
migratedConfigs[strings.ToLower(oldPath)] = newPath
log.Printf("Migrated configuration from ‘%s’ to ‘%s’", oldPath, newPath)
}
oldC16, err := windows.UTF16PtrFromString(oldC)
if err == nil {
windows.MoveFileEx(oldC16, nil, windows.MOVEFILE_DELAY_UNTIL_REBOOT)
}
oldLog16, err := windows.UTF16PtrFromString(filepath.Join(oldRoot, "WireGuard", "log.bin"))
if err == nil {
windows.MoveFileEx(oldLog16, nil, windows.MOVEFILE_DELAY_UNTIL_REBOOT)
}
oldRoot16, err := windows.UTF16PtrFromString(filepath.Join(oldRoot, "WireGuard"))
if err == nil {
windows.MoveFileEx(oldRoot16, nil, windows.MOVEFILE_DELAY_UNTIL_REBOOT)
}
if len(migratedConfigs) == 0 {
return
}
m, err := mgr.Connect()
if err != nil {
return
}
defer m.Disconnect()
services, err := m.ListServices()
if err != nil {
return
}
matcher, err := regexp.Compile(" /tunnelservice \"?([^\"]+)\"?$")
if err != nil {
return
}
for _, svcName := range services {
if !strings.HasPrefix(svcName, "WireGuardTunnel$") {
continue
}
svc, err := m.OpenService(svcName)
if err != nil {
continue
}
config, err := svc.Config()
if err != nil {
continue
}
matches := matcher.FindStringSubmatchIndex(config.BinaryPathName)
if len(matches) != 4 {
svc.Close()
continue
}
newName, found := migratedConfigs[strings.ToLower(config.BinaryPathName[matches[2]:])]
if !found {
svc.Close()
continue
}
config.BinaryPathName = config.BinaryPathName[:matches[0]] + fmt.Sprintf(" /tunnelservice \"%s\"", newName)
err = svc.UpdateConfig(config)
svc.Close()
if err != nil {
continue
}
log.Printf("Migrated service command line arguments for ‘%s’", svcName)
}
}
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