#!/bin/sh
#
# Univention Setup
#  forwarder change script
#
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# https://www.univention.com/about-us/careers/vacancies/
#
# Copyright 2004-2023 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/>.

. /usr/lib/univention-system-setup/scripts/setup_utils.sh

info_header "$0" "$(gettext "Setting external name servers")"

if [ "$check_ldap_access" = "1" ]; then
	exit 0
fi

oldvalues=""
newvalues=""

for name in dns/forwarder1 dns/forwarder2 dns/forwarder3; do
	is_variable_set "$name"
	if [ $? = 0 ]; then
		continue
	fi

	oldvalues="$oldvalues#$(univention-config-registry get $name)"

	var=`get_profile_var $name`

	if [ -z "$var" ]; then
		univention-config-registry unset $name
		newvalues="$newvalues#"
	else
		univention-config-registry set $name=$var
		newvalues="$newvalues#$var"
	fi
done

systemctl restart bind9

if [ -d "/var/lib/univention-system-setup/dnsforwarder.post" ]; then
	run-parts /var/lib/univention-system-setup/dnsforwarder.post --arg=$oldvalues --arg=$newvalues
fi

exit 0
