wireguard-go/ipc/winpipe/sd.go
2019-08-30 13:21:47 -06:00

36 lines
1.2 KiB
Go

// +build windows
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2005 Microsoft
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package winpipe
import (
"unsafe"
)
//sys convertStringSecurityDescriptorToSecurityDescriptor(str string, revision uint32, sd *uintptr, size *uint32) (err error) = advapi32.ConvertStringSecurityDescriptorToSecurityDescriptorW
//sys localFree(mem uintptr) = LocalFree
//sys getSecurityDescriptorLength(sd uintptr) (len uint32) = advapi32.GetSecurityDescriptorLength
//sys getSecurityInfo(handle syscall.Handle, objectType uint32, securityInformation uint32, owner **syscall.SID, group **syscall.SID, dacl *uintptr, sacl *uintptr, sd *uintptr) (ret error) = advapi32.GetSecurityInfo
//sys equalSid(sid1 *syscall.SID, sid2 *syscall.SID) (isEqual bool) = advapi32.EqualSid
const (
SE_FILE_OBJECT = 1
OWNER_SECURITY_INFORMATION = 1
)
func SddlToSecurityDescriptor(sddl string) ([]byte, error) {
var sdBuffer uintptr
err := convertStringSecurityDescriptorToSecurityDescriptor(sddl, 1, &sdBuffer, nil)
if err != nil {
return nil, err
}
defer localFree(sdBuffer)
sd := make([]byte, getSecurityDescriptorLength(sdBuffer))
copy(sd, (*[0xffff]byte)(unsafe.Pointer(sdBuffer))[:len(sd)])
return sd, nil
}