#!/usr/bin/python3
#
# Univention Print Client
#  helper script: set printer server according to policy
#
# Copyright 2004-2020 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/>.

from __future__ import print_function
import sys
import univention.config_registry
from univention.lib.policy_result import policy_result, PolicyResultFailed

configRegistry = univention.config_registry.ConfigRegistry()
configRegistry.load()

if configRegistry.is_true('cups/printserver', False):
	# This host is a printserver. We don't overwrite the UCR variable for the printserver,
	# because in most instances this makes no sense. Bug #10124
	sys.exit(0)

ldap_hostdn = configRegistry.get('ldap/hostdn')
if ldap_hostdn:
	try:
		result, policies = policy_result(ldap_hostdn)
	except PolicyResultFailed as exc:
		print(exc, file=sys.stderr)
		sys.exit(exc.returncode)

	new_print_server = result.get('univentionPrintServer', [''])[0]
	cups_server = configRegistry.get('cups/server')
	if not cups_server or new_print_server != cups_server:
		univention.config_registry.handler_set(['cups/server=%s' % new_print_server])
