40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
// +build windows
|
|
|
|
package xid
|
|
|
|
import (
|
|
"fmt"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/windows"
|
|
)
|
|
|
|
func readPlatformMachineID() (string, error) {
|
|
// source: https://github.com/shirou/gopsutil/blob/master/host/host_windows.go
|
|
var h windows.Handle
|
|
err := windows.RegOpenKeyEx(windows.HKEY_LOCAL_MACHINE, windows.StringToUTF16Ptr(`SOFTWARE\Microsoft\Cryptography`), 0, windows.KEY_READ|windows.KEY_WOW64_64KEY, &h)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer windows.RegCloseKey(h)
|
|
|
|
const windowsRegBufLen = 74 // len(`{`) + len(`abcdefgh-1234-456789012-123345456671` * 2) + len(`}`) // 2 == bytes/UTF16
|
|
const uuidLen = 36
|
|
|
|
var regBuf [windowsRegBufLen]uint16
|
|
bufLen := uint32(windowsRegBufLen)
|
|
var valType uint32
|
|
err = windows.RegQueryValueEx(h, windows.StringToUTF16Ptr(`MachineGuid`), nil, &valType, (*byte)(unsafe.Pointer(®Buf[0])), &bufLen)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
hostID := windows.UTF16ToString(regBuf[:])
|
|
hostIDLen := len(hostID)
|
|
if hostIDLen != uuidLen {
|
|
return "", fmt.Errorf("HostID incorrect: %q\n", hostID)
|
|
}
|
|
|
|
return hostID, nil
|
|
}
|