#!/usr/bin/python2.7
# -*- coding: utf-8 -*-
#
# Univention Updater
#  read the maintenance settings
#
# Copyright 2004-2014 Univention GmbH
#
# http://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
# <http://www.gnu.org/licenses/>.

import os, string, sys
import subprocess
import univention.config_registry

# Name of the cron.d file
CRON_D='/etc/cron.d/univention-maintenance'

def write_cron_job(configRegistry, cron, updateto, reboot, try_release_update):
	file=open(CRON_D, 'w')
	file.write('# cron job for update\n')
	file.write('PATH=/sbin:/usr/sbin:/usr/bin:/bin\n')
	if cron != '* * * * * ':
		file.write('%s root ' % cron)
		if configRegistry.is_true( 'local/repository' ):
			target='local'
		else:
			target='net'
		if updateto:
			updateto='--updateto=%s' % updateto
		if reboot:
			reboot='--reboot=%s' % reboot
		file.write('/usr/sbin/jitter 600 ')
		if try_release_update:
			file.write('/usr/share/univention-updater/univention-updater %s %s %s --silent --noninteractive; ' % (target, updateto, reboot))
		file.write('/usr/share/univention-updater/univention-actualise --dist-upgrade --silent\n')
	file.close()


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

if os.path.exists(CRON_D):
	os.unlink(CRON_D)

ldap_hostdn = configRegistry.get('ldap/hostdn')
if ldap_hostdn:

	p1 = subprocess.Popen(['univention_policy_result', '-D', ldap_hostdn, '-y', '/etc/machine.secret', '-s', ldap_hostdn], stdout=subprocess.PIPE)

	updateto=''
	cron_active=''
	reboot=''
	cron=None
	try_release_update = False

	for line in p1.stdout:
		line=line.strip(' ').strip('\n')
		key, value = line.split('=', 1)
		if line.startswith('univentionCronActive='):
			cron_active=line.replace('univentionCronActive=', '').replace('"','')
		elif line.startswith('univentionCron='):
			cron=line.replace('univentionCron=', '').replace('"','')
		elif line.startswith('univentionUpdateVersion='):
			updateto=line.replace('univentionUpdateVersion=', '').replace('"','')
		elif line.startswith('univentionInstallationReboot='):
			reboot=line.replace('univentionInstallationReboot=', '').replace('"','')
		elif 'univentionUpdateActivate' == key:
			try_release_update = value == '"TRUE"'

	if p1.wait() != 0:
		print 'failed to execute univention_policy_result'
		sys.exit(p1.returncode)

	if cron_active and cron_active == '1':
		if cron:
			write_cron_job(configRegistry, cron, updateto, reboot, try_release_update)

sys.exit(0)
