#!/bin/bash set -x export CERTBOT_DOMAIN=${1} export CERTBOT_VALIDATION=${2} DOMAIN=$(expr match "$CERTBOT_DOMAIN" '.*\.\(.*\..*\)') CHALLENGE_DOMAIN="_acme-challenge.${CERTBOT_DOMAIN}" [[ -z ${DOMAIN} ]] && export DOMAIN=${CERTBOT_DOMAIN} sed -e "s DOMAIN_NAME ${DOMAIN} g" -e "s SUBDOMAIN ${CERTBOT_DOMAIN} g" -e "s VALIDATION_STRING ${CERTBOT_VALIDATION} g" ddns_update > /tmp/certbot_ddns_update knsupdate /tmp/certbot_ddns_update [[ ${?} == 0 ]] && rm -f /tmp/certbot_ddns_update