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#!/usr/bin/python2.7 |
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# -*- coding: utf-8 -*- |
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""" |
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Univention BIND listener script |
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""" |
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# Copyright 2015 Univention GmbH |
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# |
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# http://www.univention.de/ |
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# |
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# All rights reserved. |
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# |
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# The source code of this program is made available |
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# under the terms of the GNU Affero General Public License version 3 |
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# (GNU AGPL V3) as published by the Free Software Foundation. |
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# |
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# Binary versions of this program provided by Univention to you as |
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# well as other copyrighted, protected or trademarked materials like |
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# Logos, graphics, fonts, specific documentations and configurations, |
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# cryptographic keys etc. are subject to a license agreement between |
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# you and Univention and not subject to the GNU AGPL V3. |
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# |
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# In the case you use this program under the terms of the GNU AGPL V3, |
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# the program is provided in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Affero General Public License for more details. |
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# |
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# You should have received a copy of the GNU Affero General Public |
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# License with the Debian GNU/Linux or Univention distribution in file |
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# /usr/share/common-licenses/AGPL-3; if not, see |
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# <http://www.gnu.org/licenses/>. |
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|
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__package__ = '' # workaround for PEP 366 |
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import ldap |
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import listener |
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import ipaddr |
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import subprocess |
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|
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name = 'bind-acl' |
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description = 'Update BIND ACLs' |
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filter = '(objectClass=univentionNetworkClass)' |
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attributes = ['univentionNetmask', 'univentionNetwork'] |
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ACL_CONF_FILE = "/var/lib/bind/network-acls.conf" |
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RNDC_BIN = "/usr/sbin/rndc" |
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|
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conf = { |
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'ldapserver': None, |
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'ldapport': 7389, |
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'basedn': None, |
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'binddn': None, |
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'bindpw': None, |
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} |
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|
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|
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def setdata(key, value): |
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conf[key] = value |
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|
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|
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def handler(dn, new, old): |
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ldap_uri = "ldap://%(ldapserver)s:%(ldapport)d" % conf |
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ldap_con = ldap.initialize(ldap_uri) |
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ldap_con.bind_s(conf['binddn'], conf['bindpw']) |
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networks = set() |
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for dn, values in ldap_con.search_s(conf['basedn'], ldap.SCOPE_SUBTREE, filter, attributes): |
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network = ipaddr.IPNetwork('%s/%s' % ( |
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values['univentionNetwork'][0], |
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values['univentionNetmask'][0], |
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)) |
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networks.add(network.masked()) |
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|
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listener.setuid(0) |
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try: |
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with open(ACL_CONF_FILE, 'w') as acl: |
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print >> acl, '# THIS FILE IS GENERATED BY bind-acl.py' |
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print >> acl, 'acl ucs_networks {' |
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print >> acl, '\tlocalhost;' |
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for network in networks: |
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print >> acl, '\t%s;' % (network,) |
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print >> acl, '};' |
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subprocess.call(('rndc', '-p', '953', 'reconfig')) |
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finally: |
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listener.unsetuid() |
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|
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if __name__ == '__main__': |
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from univention.config_registry import ConfigRegistry |
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ucr = ConfigRegistry() |
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ucr.load() |
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setdata('ldapserver', ucr['ldap/server/name']) |
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setdata('basedn', ucr['ldap/base']) |
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setdata('binddn', ucr['ldap/hostdn']) |
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setdata('bindpw', open('/etc/machine.secret', 'r').read()) |
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handler('', None, None) |