# SPDX-FileCopyrightText: 2018-2025 Univention GmbH
# SPDX-License-Identifier: AGPL-3.0-only
"""|UDM| module for |DNS| Name Server records"""
from __future__ import annotations
import univention.admin.filter
import univention.admin.handlers
import univention.admin.localization
from univention.admin.handlers.dns import DNSBase, is_dns, is_not_handled_by_other_module_than, is_zone
from univention.admin.layout import Group, Tab
translation = univention.admin.localization.translation('univention.admin.handlers.dns')
_ = translation.translate
module = 'dns/ns_record'
operations = ['add', 'edit', 'remove', 'search']
columns = ['nameserver']
superordinate = ['dns/forward_zone', 'dns/reverse_zone']
childs = False
short_description = 'DNS: NS Record'
object_name = 'Nameserver record'
object_name_plural = 'Nameserver records'
long_description = _('Delegate a subzone to other nameservers.')
# fmt: off
options = {
'default': univention.admin.option(
short_description=short_description,
default=True,
objectClasses=['top', 'dNSZone'],
),
}
property_descriptions = {
'zone': univention.admin.property(
short_description=_('Zone name'),
long_description=_('The name of the subzone relative to the parent.'),
syntax=univention.admin.syntax.dnsName,
include_in_default_search=True,
required=True,
identifies=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=(('22', 'hours'), []),
dontsearch=True,
),
'nameserver': univention.admin.property(
short_description=_('Name servers'),
long_description=_('The FQDNs of the hosts serving the named zone.'),
syntax=univention.admin.syntax.dnsHostname,
multivalue=True,
required=True,
),
}
layout = [
Tab(_('General'), _('Basic values'), layout=[
Group(_('General NS record settings'), layout=[
'zone',
'nameserver',
'zonettl',
]),
]),
]
mapping = univention.admin.mapping.mapping()
mapping.register('zone', 'relativeDomainName', None, univention.admin.mapping.ListToString, encoding='ASCII')
mapping.register('nameserver', 'nSRecord', encoding='ASCII')
mapping.register('zonettl', 'dNSTTL', univention.admin.mapping.mapUNIX_TimeInterval, univention.admin.mapping.unmapUNIX_TimeInterval)
# fmt: on
[docs]
class object(DNSBase):
module = module
[docs]
@classmethod
def unmapped_lookup_filter(cls) -> univention.admin.filter.conjunction:
return univention.admin.filter.conjunction('&', [
univention.admin.filter.expression('objectClass', 'dNSZone'),
univention.admin.filter.expression('nSRecord', '*', escape=False),
univention.admin.filter.conjunction('!', [univention.admin.filter.expression('sOARecord', '*', escape=False)]),
]) # fmt: skip
lookup = object.lookup
lookup_filter = object.lookup_filter
[docs]
def identify(dn: str, attr: univention.admin.handlers._Attributes, canonical: bool = False) -> bool:
return bool(
attr.get('nSRecord') and is_dns(attr) and not is_zone(attr) and is_not_handled_by_other_module_than(attr, module),
)
