#!/bin/sh
# Univention SSL
#  fetch certificate from Primary Directory Node
#
# Copyright 2019-2022 Univention GmbH
#
# https://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
#
# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <https://www.gnu.org/licenses/>.

set -e -u

# shellcheck source=/dev/null
. /usr/share/univention-lib/all.sh

certname="${1:?No certificate name set}"
dcname="${2:?No dc name set}"

command -v univention-scp >/dev/null 2>&1 ||
	die "Couldn't download host certificate, univention-scp was not found"

eval "$(ucr shell domainname server/role hostname)"

echo -n "Download host certificate for $certname:"
hostpwd="/etc/machine.secret"
[ -s "$hostpwd" ] ||
	die "Missing $hostpwd"

hostaccount="${hostname:?}\$"
counter=0
while [ "$counter" -le 30 ]
do
	counter=$((counter+1))

	if [ "${server_role:-}" != "domaincontroller_master" ]; then
		univention-scp "$hostpwd" -r \
			"$hostaccount@$dcname:/etc/univention/ssl/$certname" \
			"$hostaccount@$dcname:/etc/univention/ssl/$certname.${domainname:?}" \
			/etc/univention/ssl/ || :
	fi

	[ -d "/etc/univention/ssl/$certname" ] &&
		[ -d "/etc/univention/ssl/$certname.$domainname" ] &&
		exit 0

	echo -n "."
	sleep 20
done

die "failed to get host certificate"
