vendor/github.com/bgentry/speakeasy/speakeasy_windows.go

   1 // +build windows
   2
   3 package speakeasy
   4
   5 import (
   6         "syscall"
   7 )
   8
   9 // SetConsoleMode function can be used to change value of ENABLE_ECHO_INPUT:
  10 // http://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx
  11 const ENABLE_ECHO_INPUT = 0x0004
  12
  13 func getPassword() (password string, err error) {
  14         var oldMode uint32
  15
  16         err = syscall.GetConsoleMode(syscall.Stdin, &oldMode)
  17         if err != nil {
  18                 return
  19         }
  20
  21         var newMode uint32 = (oldMode &^ ENABLE_ECHO_INPUT)
  22
  23         err = setConsoleMode(syscall.Stdin, newMode)
  24         defer setConsoleMode(syscall.Stdin, oldMode)
  25         if err != nil {
  26                 return
  27         }
  28
  29         return readline()
  30 }
  31
  32 func setConsoleMode(console syscall.Handle, mode uint32) (err error) {
  33         dll := syscall.MustLoadDLL("kernel32")
  34         proc := dll.MustFindProc("SetConsoleMode")
  35         r, _, err := proc.Call(uintptr(console), uintptr(mode))
  36
  37         if r == 0 {
  38                 return err
  39         }
  40         return nil
  41 }