#! /bin/sh -efu

[ "$#" -eq 2 ] || {
	echo >&2 "Usage: USERNAME KEYFILE"
	exit 1
}
u="$1"; shift
[ -n "$u" ] &&
	printf %s "$u" |grep -Eqsx '[[:alpha:]][[:alnum:]_]+' || {
		echo >&2 "$0: invalid username"
		exit 1
	}
k="$1"; shift
cat -- "$k" > /dev/null
if getent passwd "$u" > /dev/null 2>&1; then
	exit 0
fi
useradd "$u"
hasher-useradd "$u"
cat >> /home/$u/.hasher/config <<EOF
packager='Automated package hasher <$u@altlinux.org>'
EOF
[ -f /etc/openssh/authorized_keys/"$u" ] ||
	install -pm644 "$k" /etc/openssh/authorized_keys/"$u"
