#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# Univention Server Memberserver
#  sets LDAP server according to policy
#
# Copyright 2003-2021 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/>.

import sys

from univention.config_registry import ConfigRegistry
from univention.config_registry.frontend import ucr_update
from univention.lib.policy_result import policy_result, PolicyResultFailed

configRegistry = ConfigRegistry(write_registry=ConfigRegistry.LDAP)
configRegistry.load()

found = False

ldap_hostdn = configRegistry.get('ldap/hostdn')
if ldap_hostdn:
	for key in ['ldap/server/name', 'ldap/server/addition']:
		ldap_server_string = configRegistry.get(key)
		if ldap_server_string:
			for k in ldap_server_string.split(' '):
				try:
					results, _policies = policy_result(ldap_hostdn, ldap_server=k)
				except PolicyResultFailed:
					continue

				addition = []
				updates = {}

				ldap_server_name = configRegistry.get('ldap/server/name')
				results = results.get('univentionLDAPServer', [])
				for new_ldap_server in results:
					if not found:
						if not ldap_server_name or new_ldap_server != ldap_server_name:
							updates['ldap/server/name'] = new_ldap_server
						found = True
					else:
						addition.append(new_ldap_server)

				old = configRegistry.get('ldap/server/addition', '')
				new = ' '.join(addition)
				if new != old:
					updates['ldap/server/addition'] = new

				if updates:
					ucr_update(configRegistry, updates)

				sys.exit(0)

sys.exit(1)
