#!/bin/sh

SCRIPT_TTL=30

if test "x$LE_SERVER" = x; then echo export LE_SERVER=ns.example.com; exit=1; fi
if test "x$LE_ZONE" = x; then echo export LE_ZONE=example.com; exit=1; fi
if test "x$LE_TSIGKEY" = x; then echo export LE_TSIGKEY=/path/to/key; exit=1; fi
if test "x$exit" = x1; then exit 1; fi

if test "x$1" = xdeploy_challenge; then
	nsupdate -v -k "$LE_TSIGKEY" <<- NSUPDATE
		server $LE_SERVER
		zone $LE_ZONE
		update add _acme-challenge.$2. $SCRIPT_TTL TXT $4
		send
	NSUPDATE
elif test "x$1" = xclean_challenge; then
	nsupdate -v -k "$LE_TSIGKEY" <<- NSUPDATE
		server $LE_SERVER
		zone $LE_ZONE
		update del _acme-challenge.$2. TXT
		send
	NSUPDATE
fi