# -*- coding: utf-8 -*-
#
# Copyright 2004-2022 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/>.
"""
|UDM| module for |DNS| service records (SRV)
"""
from univention.admin.layout import Tab, Group
import univention.admin.filter
import univention.admin.handlers
import univention.admin.handlers.dns.forward_zone
import univention.admin.localization
from univention.admin.handlers.dns import ARPA_IP4, ARPA_IP6
translation = univention.admin.localization.translation('univention.admin.handlers.dns')
_ = translation.translate
module = 'dns/srv_record'
operations = ['add', 'edit', 'remove', 'search']
columns = ['location']
superordinate = 'dns/forward_zone'
childs = False
short_description = _('DNS: Service record')
object_name = _('Service record')
object_name_plural = _('Service records')
long_description = _('Resolve well-known services to servers providing those services.')
options = {
'default': univention.admin.option(
short_description=short_description,
default=True,
objectClasses=['top', 'dNSZone'],
),
}
property_descriptions = {
'name': univention.admin.property(
short_description=_('Name'),
long_description=_('The name and protocol of the service.'),
syntax=univention.admin.syntax.dnsSRVName,
include_in_default_search=True,
required=True,
identifies=True
),
'location': univention.admin.property(
short_description=_('Location'),
long_description=_('The host providing the service.'),
syntax=univention.admin.syntax.dnsSRVLocation,
multivalue=True,
required=True,
),
'zonettl': univention.admin.property(
short_description=_('Time to live'),
long_description=_('The time this entry may be cached.'),
syntax=univention.admin.syntax.UNIX_TimeInterval,
default=(('3', 'hours'), []),
dontsearch=True,
),
}
layout = [
Tab(_('General'), _('Basic settings'), layout=[
Group(_('General service record settings'), layout=[
'name',
'location',
'zonettl'
]),
]),
]
[docs]def unmapName(old, encoding=()):
items = old[0].decode(*encoding).split(u'.', 2)
items[0] = items[0][1:]
items[1] = items[1][1:]
return items
[docs]def mapName(old, encoding=()):
if len(old) == 1:
return old[0].encode(*encoding)
if len(old) == 3 and old[2]:
return u'_{0}._{1}.{2}'.format(*old).encode(*encoding)
return u'_{0}._{1}'.format(*old[:2]).encode(*encoding)
[docs]def unmapLocation(old, encoding=()):
new = []
for i in old:
new.append(i.decode(*encoding).split(u' ', 3))
return new
[docs]def mapLocation(old, encoding=()):
new = []
for i in old:
new.append(u' '.join(i).encode(*encoding))
return new
mapping = univention.admin.mapping.mapping()
mapping.register('name', 'relativeDomainName', mapName, unmapName, encoding='ASCII')
mapping.register('location', 'sRVRecord', mapLocation, unmapLocation, encoding='ASCII')
mapping.register('zonettl', 'dNSTTL', univention.admin.mapping.mapUNIX_TimeInterval, univention.admin.mapping.unmapUNIX_TimeInterval)
[docs]class object(univention.admin.handlers.simpleLdap):
module = module
def _updateZone(self):
if self.update_zone:
self.superordinate.open()
self.superordinate.modify()
def __init__(self, co, lo, position, dn='', superordinate=None, attributes=[], update_zone=True):
self.update_zone = update_zone
univention.admin.handlers.simpleLdap.__init__(self, co, lo, position, dn, superordinate, attributes=attributes)
def _ldap_addlist(self):
return super(object, self)._ldap_addlist() + [
(self.superordinate.mapping.mapName('zone'), self.superordinate.mapping.mapValue('zone', self.superordinate['zone'])),
]
def _ldap_post_create(self):
super(object, self)._ldap_post_create()
self._updateZone()
def _ldap_post_modify(self):
super(object, self)._ldap_post_modify()
if self.hasChanged(self.descriptions.keys()):
self._updateZone()
def _ldap_post_remove(self):
super(object, self)._ldap_post_remove()
self._updateZone()
[docs] @classmethod
def unmapped_lookup_filter(cls):
return univention.admin.filter.conjunction('&', [
univention.admin.filter.expression('objectClass', 'dNSZone'),
univention.admin.filter.conjunction('!', [univention.admin.filter.expression('relativeDomainName', '@')]),
univention.admin.filter.conjunction('!', [univention.admin.filter.expression('zoneName', '*.in-addr.arpa', escape=False)]),
univention.admin.filter.conjunction('!', [univention.admin.filter.expression('zoneName', '*.ip6.arpa', escape=False)]),
univention.admin.filter.expression('sRVRecord', '*', escape=False),
])
[docs] @classmethod
def lookup_filter_superordinate(cls, filter, superordinate):
filter.expressions.append(univention.admin.filter.expression('zoneName', superordinate.mapping.mapValueDecoded('zone', superordinate['zone']), escape=True))
return filter
lookup = object.lookup
lookup_filter = object.lookup_filter
[docs]def identify(dn, attr, canonical=False):
return all([
b'dNSZone' in attr.get('objectClass', []),
b'@' not in attr.get('relativeDomainName', []),
not attr.get('zoneName', [b'.in-addr.arpa'])[0].decode('ASCII').endswith(ARPA_IP4),
not attr.get('zoneName', [b'.ip6.arpa'])[0].decode('ASCII').endswith(ARPA_IP6),
attr.get('sRVRecord', [])
])
