summaryrefslogtreecommitdiffstats
path: root/ipalib/plugins/dns.py
blob: 2b4346a0358a01520b04f558c9521bdf2f4a8722 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
# Authors:
#   Pavel Zuna <pzuna@redhat.com>
#
# Copyright (C) 2009  Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2 only
#
# This program is distributed 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Domain Name System (DNS) plugin

Implements a set of commands useful for manipulating DNS records used by
the BIND LDAP plugin.

EXAMPLES:

 Add new zone;
   ipa dns-create example.com nameserver.example.com admin@example.com

 Add second nameserver for example.com:
   ipa dns-add-rr example.com @ NS nameserver2.example.com

 Delete previously added nameserver from example.com:
   ipa dns-del-rr example.com @ NS nameserver2.example.com

 Add new A record for www.example.com: (random IP)
   ipa dns-add-rr example.com www A 80.142.15.2

 Show zone example.com:
   ipa dns-show example.com

 Find zone with 'example' in it's domain name:
   ipa dns-find example

 Find records for resources with 'www' in their name in zone example.com:
   ipa dns-find-rr example.com www

 Find A records for resource www in zone example.com
   ipa dns-find-rr example.com --resource www --type A

 Show records for resource www in zone example.com
   ipa dns-show-rr example.com www

 Delete zone example.com with all resource records:
   ipa dns-delete example.com
"""

# A few notes about the LDAP schema to make this plugin more understandable:
#  - idnsRecord object is a HOSTNAME with one or more resource records
#  - idnsZone object is a idnsRecord object with mandatory SOA record
#    it basically makes the assumption that ZONE == DOMAINNAME + SOA record
#    resource records can be stored in both idnsZone and idnsRecord objects

import time

from ipalib import api, crud, errors
from ipalib import Object, Command
from ipalib import Flag, Int, Str, StrEnum

# parent DN
_zone_container_dn = api.env.container_dns

# supported resource record types
_record_types = (
    u'A', u'AAAA', u'A6', u'AFSDB', u'CERT', u'CNAME', u'DNAME',
    u'DS', u'HINFO', u'KEY', u'KX', u'LOC', u'MD', u'MINFO', u'MX',
    u'NAPTR', u'NS', u'NSEC', u'NXT', u'PTR', u'RRSIG', u'SSHFP',
    u'SRV', u'TXT',
)

# supported DNS classes, IN = internet, rest is almost never used
_record_classes = (u'IN', u'CS', u'CH', u'HS')

# attributes displayed by default for resource records
_record_default_attributes = ['%srecord' % r for r in _record_types]
_record_default_attributes.append('idnsname')

# attributes displayed by default for zones
_zone_default_attributes = [
    'idnsname', 'idnszoneactive', 'idnssoamname', 'idnssoarname',
    'idnssoaserial', 'idnssoarefresh', 'idnssoaretry', 'idnssoaexpire',
    'idnssoaminimum'
]


# build zone dn
def _get_zone_dn(ldap, idnsname):
    rdn = ldap.make_rdn_from_attr('idnsname', idnsname)
    return ldap.make_dn_from_rdn(rdn, _zone_container_dn)

# build dn for entry with record
def _get_record_dn(ldap, zone, idnsname):
    parent_dn = _get_zone_dn(ldap, zone)
    if idnsname == '@' or idnsname == zone:
        return parent_dn
    rdn = ldap.make_rdn_from_attr('idnsname', idnsname)
    return ldap.make_dn_from_rdn(rdn, parent_dn)


class dns(Object):
    """DNS zone/SOA record object."""

    takes_params = (
        Str('idnsname',
            cli_name='name',
            doc='zone name (FQDN)',
            normalizer=lambda value: value.lower(),
            primary_key=True,
        ),
        Str('idnssoamname',
            cli_name='name_server',
            doc='authoritative name server',
        ),
        Str('idnssoarname',
            cli_name='admin_email',
            doc='administrator e-mail address',
            default_from=lambda idnsname: 'root.%s' % idnsname,
            normalizer=lambda value: value.replace('@', '.'),
        ),
        Int('idnssoaserial?',
            cli_name='serial',
            doc='SOA serial',
        ),
        Int('idnssoarefresh?',
            cli_name='refresh',
            doc='SOA refresh',
        ),
        Int('idnssoaretry?',
            cli_name='retry',
            doc='SOA retry',
        ),
        Int('idnssoaexpire?',
            cli_name='expire',
            doc='SOA expire',
        ),
        Int('idnssoaminimum?',
            cli_name='minimum',
            doc='SOA minimum',
        ),
        Int('dnsttl?',
            cli_name='ttl',
            doc='SOA time to live',
        ),
        StrEnum('dnsclass?',
            cli_name='class',
            doc='SOA class',
            values=_record_classes,
        ),
        Flag('idnsallowdynupdate',
            cli_name='allow_dynupdate',
            doc='allow dynamic update?',
        ),
    )

api.register(dns)


class dns_add(crud.Create):
    """
    Create new DNS zone/SOA record.
    """

    def execute(self, *args, **options):
        ldap = self.Backend.ldap2
        idnsname = args[0]

        # build entry attributes
        entry_attrs = self.args_options_2_entry(*args, **options)

        # build entry DN
        dn = _get_zone_dn(ldap, idnsname)

        # fill in required attributes
        entry_attrs['objectclass'] = ['top', 'idnsrecord', 'idnszone']
        entry_attrs['idnszoneactive'] = True

        # fill default values, build SOA serial from current date
        soa_serial = int('%s01' % time.strftime('%Y%d%m'))
        entry_attrs.setdefault('idnssoaserial', soa_serial)
        entry_attrs.setdefault('idnssoarefresh', 3600)
        entry_attrs.setdefault('idnssoaretry', 900)
        entry_attrs.setdefault('idnssoaexpire', 1209600)
        entry_attrs.setdefault('idnssoaminimum', 3600)

        # create zone entry
        ldap.add_entry(dn, entry_attrs)

        # get zone entry with created attributes for output
        return ldap.get_entry(dn, entry_attrs.keys())

    def output_for_cli(self, textui, result, *args, **options):
        (dn, entry_attrs) = result
        idnsname = args[0]

        textui.print_name(self.name)
        textui.print_attribute('dn', dn)
        textui.print_entry(entry_attrs)
        textui.print_dashed('Created DNS zone "%s".' % idnsname)

api.register(dns_add)


class dns_del(crud.Delete):
    """
    Delete existing DNS zone/SOA record.
    """

    def execute(self, *args, **options):
        ldap = self.api.Backend.ldap2
        idnsname = args[0]

        # build zone entry DN
        dn = _get_zone_dn(ldap, idnsname)
        # just check if zone exists for now
        ldap.get_entry(dn, [''])

        # retrieve all subentries of zone - records
        try:
            (entries, truncated) = ldap.find_entries(
                None, [''], dn, ldap.SCOPE_ONELEVEL
            )
        except errors.NotFound:
            (entries, truncated) = (tuple(), False)

        # kill'em all, records first
        for e in entries:
            ldap.delete_entry(e[0])
        ldap.delete_entry(dn)

        # return something positive
        return True

    def output_for_cli(self, textui, result, *args, **options):
        textui.print_name(self.name)
        textui.print_dashed('Deleted DNS zone "%s".' % args[0])

api.register(dns_del)


class dns_mod(crud.Update):
    """
    Modify DNS zone/SOA record.
    """

    def execute(self, *args, **options):
        ldap = self.api.Backend.ldap2
        idnsname = args[0]

        # build entry attributes, don't include idnsname!
        entry_attrs = self.args_options_2_entry(*tuple(), **options)

        # build entry DN
        dn = _get_zone_dn(ldap, idnsname)

        # update zone entry
        ldap.update_entry(dn, entry_attrs)

        # get zone entry with modified + default attributes for output
        return ldap.get_entry(
            dn, (entry_attrs.keys() + _zone_default_attributes)
        )

    def output_for_cli(self, textui, result, *args, **options):
        (dn, entry_attrs) = result
        idnsname = args[0]

        textui.print_name(self.name)
        textui.print_attribute('dn', dn)
        textui.print_entry(entry_attrs)
        textui.print_dashed('Modified DNS zone "%s".' % idnsname)

api.register(dns_mod)


class dns_find(crud.Search):
    """
    Search for DNS zones/SOA records.
    """

    takes_options = (
        Flag('all',
            doc='retrieve all attributes',
        ),
    )

    def execute(self, term, **options):
        ldap = self.api.Backend.ldap2

        # build search filter
        filter = ldap.make_filter_from_attr('idnsname', term, exact=False)

        # select attributes we want to retrieve
        if options['all']:
            attrs_list = ['*']
        else:
            attrs_list = _zone_default_attributes

        # get matching entries
        try:
            (entries, truncated) = ldap.find_entries(
                filter, attrs_list, _zone_container_dn, ldap.SCOPE_ONELEVEL
            )
        except errors.NotFound:
            (entries, truncated) = (tuple(), False)

        return (entries, truncated)

    def output_for_cli(self, textui, result, term, **options):
        (entries, truncated) = result

        textui.print_name(self.name)
        for (dn, entry_attrs) in entries:
            textui.print_attribute('dn', dn)
            textui.print_entry(entry_attrs)
            textui.print_plain('')
        textui.print_count(
            len(entries), '%i DNS zone matched.', '%i DNS zones matched.'
        )
        if truncated:
            textui.print_dashed('These results are truncated.', below=False)
            textui.print_dashed(
                'Please refine your search and try again.', above=False
            )

api.register(dns_find)


class dns_show(crud.Retrieve):
    """
    Display DNS zone/SOA record.
    """

    takes_options = (
        Flag('all',
            doc='retrieve all attributes',
        ),
    )

    def execute(self, idnsname, **options):
        ldap = self.api.Backend.ldap2

        # build entry DN
        dn = _get_zone_dn(ldap, idnsname)

        # select attributes we want to retrieve
        if options['all']:
            attrs_list = ['*']
        else:
            attrs_list = _zone_default_attributes

        return ldap.get_entry(dn, attrs_list)

    def output_for_cli(self, textui, result, *args, **options):
        (dn, entry_attrs) = result

        textui.print_name(self.name)
        textui.print_attribute('dn', dn)
        textui.print_entry(entry_attrs)

api.register(dns_show)


class dns_enable(Command):
    """
    Activate DNS zone.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
    )

    def execute(self, zone):
        ldap = self.api.Backend.ldap2

        # build entry DN
        dn = _get_zone_dn(ldap, zone)

        # activate!
        try:
            ldap.update_entry(dn, {'idnszoneactive': True})
        except errors.EmptyModlist:
            pass

        # return something positive
        return True

    def output_for_cli(self, textui, result, zone):
        textui.print_name(self.name)
        textui.print_dashed('Activated DNS zone "%s".' % zone)

api.register(dns_enable)


class dns_disable(Command):
    """
    Deactivate DNS zone.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
    )

    def execute(self, zone):
        ldap = self.api.Backend.ldap2

        # build entry DN
        dn = _get_zone_dn(ldap, zone)

        # deactivate!
        try:
            ldap.update_entry(dn, {'idnszoneactive': False})
        except errors.EmptyModlist:
            pass

        # return something positive
        return True

    def output_for_cli(self, textui, result, zone):
        textui.print_name(self.name)
        textui.print_dashed('Deactivated DNS zone "%s".' % zone)

api.register(dns_disable)


class dns_add_rr(Command):
    """
    Add new DNS resource record.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
        Str('idnsname',
            cli_name='resource',
            doc='resource name',
            default_from=lambda zone: zone.lower(),
            attribute=True,
        ),
        StrEnum('type',
            cli_name='type',
            doc='record type',
            values=_record_types,
        ),
        Str('data',
            cli_name='data',
            doc='type-specific data',
        ),
    )

    takes_options = (
        Int('dnsttl?',
            cli_name='ttl',
            doc='time to live',
            attribute=True,
        ),
        StrEnum('dnsclass?',
            cli_name='class',
            doc='class',
            values=_record_classes,
            attribute=True,
        ),
    )

    def execute(self, zone, idnsname, type, data, **options):
        ldap = self.api.Backend.ldap2
        attr = '%srecord' % type

        # build entry DN
        dn = _get_record_dn(ldap, zone, idnsname)

        # get resource entry where to store the new record
        try:
            (dn, entry_attrs) = ldap.get_entry(dn, [attr])
        except errors.NotFound:
            if idnsname != '@' and idnsname != zone:
                # resource entry doesn't exist, check if zone exists
                zone_dn = _get_zone_dn(ldap, zone)
                ldap.get_entry(zone_dn, [''])
                # it does, create new resource entry

                # build entry attributes
                entry_attrs = self.args_options_2_entry(
                    (idnsname, ), **options
                )

                # fill in required attributes
                entry_attrs['objectclass'] = ['top', 'idnsrecord']

                # fill in the record
                entry_attrs[attr] = data

                # create the entry
                ldap.add_entry(dn, entry_attrs)

                # get entry with created attributes for output
                return ldap.get_entry(dn, entry_attrs.keys())

            # zone doesn't exist
            raise
        # resource entry already exists, create a modlist for the new record

        # convert entry_attrs keys to lowercase
        #entry_attrs = dict(
        #    (k.lower(), v) for (k, v) in entry_attrs.iteritems()
        #)

        # get new value for record attribute
        attr_value = entry_attrs.get(attr, [])
        attr_value.append(data)

        ldap.update_entry(dn, {attr: attr_value})
        # get entry with updated attribute for output
        return ldap.get_entry(dn, ['idnsname', attr])

    def output_for_cli(self, textui, result, zone, idnsname, type, data,
            **options):
        (dn, entry_attrs) = result
        output = '"%s %s %s" to zone "%s"' % (
            idnsname, type, data, zone,
        )

        textui.print_name(self.name)
        textui.print_attribute('dn', dn)
        textui.print_entry(entry_attrs)
        textui.print_dashed('Added DNS resource record %s.' % output)

api.register(dns_add_rr)


class dns_del_rr(Command):
    """
    Delete DNS resource record.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
        Str('idnsname',
            cli_name='resource',
            doc='resource name',
            default_from=lambda zone: zone.lower(),
            attribute=True,
        ),
        StrEnum('type',
            cli_name='type',
            doc='record type',
            values=_record_types,
        ),
        Str('data',
            cli_name='data',
            doc='type-specific data',
        ),
    )

    def execute(self, zone, idnsname, type, data):
        ldap = self.api.Backend.ldap2
        attr = '%srecord' % type

        # build entry DN
        dn = _get_record_dn(ldap, zone, idnsname)

        # get resource entry with the record we're trying to delete
        (dn, entry_attrs) = ldap.get_entry(dn)

        # convert entry_attrs keys to lowercase
        entry_attrs = dict(
            (k.lower(), v) for (k, v) in entry_attrs.iteritems()
        )

        # get new value for record attribute
        attr_value = entry_attrs.get(attr.lower(), [])
        try:
            attr_value.remove(data)
        except ValueError:
            raise errors.NotFound(reason=u'resource record not found')

        # check if it's worth to keep this entry in LDAP
        if 'idnszone' not in entry_attrs['objectclass']:
            # get a list of all meaningful record attributes
            record_attrs = []
            for (k, v) in entry_attrs.iteritems():
                if k.endswith('record') and v:
                    record_attrs.append(k)
            # check if the list is empty
            if not record_attrs:
                # it's not
                ldap.delete_entry(dn)
                return True

        ldap.update_entry(dn, {attr: attr_value})
        # get entry with updated attribute for output
        return ldap.get_entry(dn, ['idnsname', attr])

    def output_for_cli(self, textui, result, zone, idnsname, type, data):
        output = '"%s %s %s" from zone "%s"' % (
            idnsname, type, data, zone,
        )

        textui.print_name(self.name)
        if not isinstance(result, bool):
            (dn, entry_attrs) = result
            textui.print_attribute('dn', dn)
            textui.print_entry(entry_attrs)
        textui.print_dashed('Deleted DNS resource record %s' % output)

api.register(dns_del_rr)


class dns_find_rr(Command):
    """
    Search for DNS resource records.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
        Str('criteria?',
            cli_name='criteria',
            doc='search criteria',
        ),
    )

    takes_options = (
        Str('idnsname?',
            cli_name='resource',
            doc='resource name',
            default_from=lambda zone: zone.lower(),
        ),
        StrEnum('type?',
            cli_name='type',
            doc='record type',
            values=_record_types,
        ),
        Str('data?',
            cli_name='data',
            doc='type-specific data',
        ),
        Flag('all',
            doc='retrieve all attributes',
        ),
    )

    def execute(self, zone, term, **options):
        ldap = self.api.Backend.ldap2
        if 'type' in options:
            attr = '%srecord' % options['type']
        else:
            attr = None

        # build base dn for search
        base_dn = _get_zone_dn(ldap, zone)

        # build search keywords
        search_kw = {}
        if 'data' in options:
            if attr is not None:
                # user is looking for a certain record type
                search_kw[attr] = options['data']
            else:
                # search in all record types
                for a in _record_default_attributes:
                    search_kw[a] = term
        if 'idnsname' in options:
            idnsname = options['idnsname']
            if idnsname == '@':
                search_kw['idnsname'] = zone
            else:
                search_kw['idnsname'] = idnsname

        # build search filter
        filter = ldap.make_filter(search_kw, rules=ldap.MATCH_ALL)
        if term:
            search_kw = {}
            for a in _record_default_attributes:
                search_kw[a] = term
            term_filter = ldap.make_filter(search_kw, exact=False)
            filter = ldap.combine_filters((filter, term_filter), ldap.MATCH_ALL)
        self.log.info(filter)

        # select attributes we want to retrieve
        if options['all']:
            attrs_list = ['*']
        elif attr is not None:
            attrs_list = [attr]
        else:
            attrs_list = _record_default_attributes

        # get matching entries
        try:
            (entries, truncated) = ldap.find_entries(
                filter, attrs_list, base_dn
            )
        except errors.NotFound:
            (entries, truncated) = (tuple(), False)

        # if the user is looking for a certain record type, don't display
        # entries that do not contain it
        if attr is not None:
            related_entries = []
            for e in entries:
                entry_attrs = e[1]
                if attr in entry_attrs:
                    related_entries.append(e)
            entries = related_entries

        return (entries, truncated)

    def output_for_cli(self, textui, result, zone, term, **options):
        (entries, truncated) = result

        textui.print_name(self.name)
        for (dn, entry_attrs) in entries:
            textui.print_attribute('dn', dn)
            textui.print_entry(entry_attrs)
            textui.print_plain('')
        textui.print_count(
            len(entries), '%i DNS resource record matched.',
            '%i DNS resource records matched.'
        )
        if truncated:
            textui.print_dashed('These results are truncated.', below=False)
            textui.print_dashed(
                'Please refine your search and try again.', above=False
            )

api.register(dns_find_rr)


class dns_show_rr(Command):
    """
    Show existing DNS resource records.
    """

    takes_args = (
        Str('zone',
            cli_name='zone',
            doc='zone name',
            normalizer=lambda value: value.lower(),
        ),
        Str('idnsname',
            cli_name='resource',
            doc='resource name',
            normalizer=lambda value: value.lower(),
        ),
    )

    takes_options = (
        Flag('all',
            doc='retrieve all attributes',
        ),
    )

    def execute(self, zone, idnsname, **options):
        # shows all records associated with resource
        ldap = self.api.Backend.ldap2

        # build entry DN
        dn = _get_record_dn(ldap, zone, idnsname)

        # select attributes we want to retrieve
        if options['all']:
            attrs_list = ['*']
        else:
            attrs_list = _record_default_attributes

        return ldap.get_entry(dn, attrs_list)

    def output_for_cli(self, textui, result, zone, idnsname, **options):
        (dn, entry_attrs) = result

        textui.print_name(self.name)
        textui.print_attribute('dn', dn)
        textui.print_entry(entry_attrs)

api.register(dns_show_rr)