#!/bin/sh
# PRactice Password

# maybe will leak password to ps/top/htop and swap file
# not sure I only compare the password variables will leak or not

read_pass () {
	stty -echo
	# -r necessary because password may contain backslash \
	read -r entered_pass
	stty echo
}

pass_name="${1:-practice_password2}"
correct_pass="$(pass "$pass_name" | { IFS= read -r p; printf %s "$p";})"
echo "Enter password \"$pass_name\":"
read_pass
# `| { IFS= read -r p; printf %s "$p"; }` steal from <https://git.zx2c4.com/password-store/tree/contrib/dmenu/passmenu#n34>, GPL-2.0-or-later; I use this because it is much faster than  `| head -n1`
while ! [ "$entered_pass" = "$correct_pass" ]; do
	echo "Wrong password, enter again:"
	read_pass
done

# source prp by `. /bin/prp` will set these password variables as environment variables and can be accessed by the whole shell, so I unset these just in case
unset entered_pass
unset correct_pass

echo "Correct password"