home-assistant-configurator/scripts/bin/certs-daemon

#!/usr/bin/env bash

if [ `id -gn` != "root" ]; then
    echo "Run as root!"
    exit 1
fi

snapctl is-connected certs

if [ $? -eq 0 ]; then

    echo "See log (journal -exf --grep=snap.${SNAP_NAME}*) for result"
    DOMAIN=`snapctl get domain`
    if [ $? -ne 0 ]; then
        logger "Missing domain, use 'snap set ${SNAP_NAME} domain=<domain>'"
        exit 0
    fi

    source "${SNAP}/helper/init"

    readarray -d '' DOMAIN_DIR < <(find "${CERTS_DIR}" -type d -name "${DOMAIN}" -print0)

    if [ "${#DOMAIN_DIR[@]}" -ne 1 ]; then
        logger "Not a unique match for domain ${DOMAIN}"
        exit 1
    fi

    DOMAIN_DIR="${DOMAIN_DIR[0]}"

    LAST_EDIT=`stat "${DOMAIN_DIR}/.time" --format="%Y" 2> /dev/null || echo 0`
    CURR_EDIT=`stat "${SSL_DIR}/.time" --format="%Y" 2> /dev/null || echo 0`

    if [ "${LAST_EDIT}" -le "${CURR_EDIT}" ]; then
        logger "No new certificate for ${DOMAIN}: `expr ${CURR_EDIT} - ${LAST_EDIT}`"
        exit 0
    fi

    readarray -d '' CERTS < <(find "${DOMAIN_DIR}" -type f -name "*.gpg" -print0)

    gpg_start_agent

    for CERT in "${CERTS[@]}"; do
        DEST="${SSL_DIR}/`basename "${CERT}" ".gpg"`"
        CURR=""

        if [ -f "${DEST}" ]; then
            CURR=`cat "${DEST}"`
        fi

        gpg --batch --yes --output "${DEST}" --decrypt "${CERT}"

        if [ -n "${CURR}" ]; then
            DIFF=`echo "${CURR}" | diff "${DEST}" -`
            if [ $? -ne 0 ]; then
                echo "${ORIG}" > "${DEST}.backup"
            fi
        fi
    done
    cp -f "${DOMAIN_DIR}/.time" "${SSL_DIR}/.time"
    logger "Replaced certificate ${DOMAIN} for snap ${SNAP_NAME}"
    snapctl restart "${SNAP_NAME}.server"
    gpg_close_agent
fi