getpasswd functionality in Go?

Question

Situation:

I want to get a password entry from the stdin console - without echoing what the user types. Is there something com

Answer 1

you can do this by execing stty -echo to turn off echo and then stty echo after reading in the password to turn it back on

Answer 2

I had a similar usecase and the following code snippet works well for me. Feel free to try this if you are still stuck here.

import (
    "fmt"
    "golang.org/x/crypto/ssh/terminal"

)

func main() {
    fmt.Printf("Now, please type in the password (mandatory): ")
    password, _ := terminal.ReadPassword(0)

    fmt.Printf("Password is : %s", password)
}

Of course, you need to install terminal package using go get beforehand.

Answer 3

You can get the behavior you want with the Read method from the os.File object (or the os.Stdin variable). The following sample program will read a line of text (terminated with by pressing the return key) but won't echo it until the fmt.Printf call.

package main

import "fmt"
import "os"

func main() {
  var input []byte = make( []byte, 100 );
  os.Stdin.Read( input );
  fmt.Printf( "%s", input );
}

If you want more advanced behavior, you're probably going to have to use the Go C-wrapper utilities and create some wrappers for low-level api calls.