From f53096dc5b42eff95c3e9d86f5cdfddb7a392e58 Mon Sep 17 00:00:00 2001
From: shimun <shimun@shimun.net>
Date: Fri, 16 Jul 2021 15:11:31 +0200
Subject: [PATCH] password helper: inherit stdin, stderr

should make fido2luks much easier to use in boot scripts since it will
allow for usage as follows:

`fido2luks open-token /dev/disk/by-uuid/sda1 test 'bash -c "read -p Pass PW 1>&2; echo $PW"'`

which will read the password from the current terminal
---
 src/cli_args/config.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cli_args/config.rs b/src/cli_args/config.rs
index cde093f..ed99975 100644
--- a/src/cli_args/config.rs
+++ b/src/cli_args/config.rs
@@ -7,6 +7,7 @@ use std::fs::File;
 use std::io::Read;
 use std::path::PathBuf;
 use std::process::Command;
+use std::process::Stdio;
 use std::str::FromStr;
 
 #[derive(Debug, Clone, PartialEq)]
@@ -156,6 +157,8 @@ impl PasswordHelper {
                 let password = Command::new("sh")
                     .arg("-c")
                     .arg(&password_helper)
+                    .stdin(Stdio::inherit())
+                    .stderr(Stdio::inherit())
                     .output()
                     .map_err(|e| Fido2LuksError::AskPassError {
                         cause: error::AskPassError::IO(e),