emlab1/update_authkeys.sh

#!/bin/sh -

. ./settings.conf

makeauthkeys()
{
	local inp out i

	inp="$1"
	out="$2"

	while read user keytype key; do
		echo 'restrict,command="'"$keygencmd $user"'"'" $keytype $key"
	done < "$inp" > "$out"
}

if [ x"$1" = x"test" ]; then
	set -e

	tmpdir=$(mktemp -d -t testfoobar)
	trap "rm -rf $tmpdir" EXIT

	labkeys="$tmpdir/lab_keys"
	echo 'someuser ssh-rsa auserkey' > "$labkeys"

	makeauthkeys "$labkeys" "$tmpdir/auth_out"

	cat "$tmpdir/auth_out"

	exit 0
fi

if ! id $labuser > /dev/null 2>&1; then
	echo "ERROR: The user \"$labuser\" does not exist."
	exit 1
fi

set -e

mkdir "${labauthfile}.lock"
trap "rmdir ${labauthfile}.lock" EXIT

tmpfile="${labauthfile}.tmp"
makeauthkeys "$labkeys" "$tmpfile"
chown "$labuser:$labuser" "$tmpfile"
mv "$tmpfile" "$labauthfile"