/
test_rdata.py
870 lines (767 loc) · 39 KB
/
test_rdata.py
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
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
# -*- coding: utf-8
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
# Copyright (C) 2006, 2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import io
import operator
import pickle
import struct
import unittest
import dns.wire
import dns.exception
import dns.name
import dns.rdata
import dns.rdataclass
import dns.rdataset
import dns.rdatatype
from dns.rdtypes.ANY.OPT import OPT
from dns.rdtypes.ANY.LOC import LOC
from dns.rdtypes.ANY.GPOS import GPOS
import dns.rdtypes.ANY.RRSIG
import dns.rdtypes.util
import dns.tokenizer
import dns.ttl
import dns.wire
import tests.stxt_module
import tests.ttxt_module
import tests.md_module
from tests.util import here
class RdataTestCase(unittest.TestCase):
def test_str(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
"1.2.3.4")
self.assertEqual(rdata.address, "1.2.3.4")
def test_unicode(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
u"1.2.3.4")
self.assertEqual(rdata.address, "1.2.3.4")
def test_module_registration(self):
TTXT = 64001
dns.rdata.register_type(tests.ttxt_module, TTXT, 'TTXT')
rdata = dns.rdata.from_text(dns.rdataclass.IN, TTXT, 'hello world')
self.assertEqual(rdata.strings, (b'hello', b'world'))
self.assertEqual(dns.rdatatype.to_text(TTXT), 'TTXT')
self.assertEqual(dns.rdatatype.from_text('TTXT'), TTXT)
def test_module_reregistration(self):
def bad():
TTXTTWO = dns.rdatatype.TXT
dns.rdata.register_type(tests.ttxt_module, TTXTTWO, 'TTXTTWO')
self.assertRaises(dns.rdata.RdatatypeExists, bad)
def test_module_registration_singleton(self):
STXT = 64002
dns.rdata.register_type(tests.stxt_module, STXT, 'STXT',
is_singleton=True)
rdata1 = dns.rdata.from_text(dns.rdataclass.IN, STXT, 'hello')
rdata2 = dns.rdata.from_text(dns.rdataclass.IN, STXT, 'world')
rdataset = dns.rdataset.from_rdata(3600, rdata1, rdata2)
self.assertEqual(len(rdataset), 1)
self.assertEqual(rdataset[0].strings, (b'world',))
def test_replace(self):
a1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
a2 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "2.3.4.5")
self.assertEqual(a1.replace(address="2.3.4.5"), a2)
mx = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX,
"10 foo.example")
name = dns.name.from_text("bar.example")
self.assertEqual(mx.replace(preference=20).preference, 20)
self.assertEqual(mx.replace(preference=20).exchange, mx.exchange)
self.assertEqual(mx.replace(exchange=name).exchange, name)
self.assertEqual(mx.replace(exchange=name).preference, mx.preference)
for invalid_parameter in ("rdclass", "rdtype", "foo", "__class__"):
with self.assertRaises(AttributeError):
mx.replace(invalid_parameter=1)
def test_invalid_replace(self):
a1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
with self.assertRaises(dns.exception.SyntaxError):
a1.replace(address="bogus")
def test_replace_comment(self):
a1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
"1.2.3.4 ;foo")
self.assertEqual(a1.rdcomment, "foo")
a2 = a1.replace(rdcomment="bar")
self.assertEqual(a1, a2)
self.assertEqual(a1.rdcomment, "foo")
self.assertEqual(a2.rdcomment, "bar")
def test_no_replace_class_or_type(self):
a1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
with self.assertRaises(AttributeError):
a1.replace(rdclass=255)
with self.assertRaises(AttributeError):
a1.replace(rdtype=2)
def test_to_generic(self):
a = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A, "1.2.3.4")
self.assertEqual(str(a.to_generic()), r'\# 4 01020304')
mx = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX, "10 foo.")
self.assertEqual(str(mx.to_generic()), r'\# 7 000a03666f6f00')
origin = dns.name.from_text('example')
ns = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"foo.example.", relativize_to=origin)
self.assertEqual(str(ns.to_generic(origin=origin)),
r'\# 13 03666f6f076578616d706c6500')
def test_txt_unicode(self):
# TXT records are not defined for Unicode, but if we get
# Unicode we should convert it to UTF-8 to preserve meaning as
# best we can. Note that it when the TXT record is sent
# to_text(), it does NOT convert embedded UTF-8 back to
# Unicode; it's just treated as binary TXT data. Probably
# there should be a TXT-like record with an encoding field.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\u200bbar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139bar"')
# We used to encode UTF-8 in UTF-8 because we processed
# escapes in quoted strings immediately. This meant that the
# \\226 below would be inserted as Unicode code point 226, and
# then when we did to_text, we would UTF-8 encode that code
# point, emitting \\195\\162 instead of \\226, and thus
# from_text followed by to_text was not the equal to the
# original input like it ought to be.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\\226\\128\\139bar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139bar"')
# Our fix for TXT-like records uses a new tokenizer method,
# unescape_to_bytes(), which converts Unicode to UTF-8 only
# once.
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT,
'"foo\u200b\\123bar"')
self.assertEqual(str(rdata), '"foo\\226\\128\\139{bar"')
def test_unicode_idna2003_in_rdata(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"Königsgäßchen")
self.assertEqual(str(rdata.target), 'xn--knigsgsschen-lcb0w')
@unittest.skipUnless(dns.name.have_idna_2008,
'Python idna cannot be imported; no IDNA2008')
def test_unicode_idna2008_in_rdata(self):
rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS,
"Königsgäßchen",
idna_codec=dns.name.IDNA_2008)
self.assertEqual(str(rdata.target), 'xn--knigsgchen-b4a3dun')
def test_digestable_downcasing(self):
# Make sure all the types listed in RFC 4034 section 6.2 are
# downcased properly, except for:
#
# types we don't implement: MD, MF, MB, MG, MR, MINFO, SIG,
# NXT, A6
#
# types that don't have names: HINFO
#
# NSEC3, whose downcasing was removed by RFC 6840 section 5.1
#
cases = [
('SOA', 'NAME NAME 1 2 3 4 5'),
('AFSDB', '0 NAME'),
('CNAME', 'NAME'),
('DNAME', 'NAME'),
('KX', '10 NAME'),
('MX', '10 NAME'),
('NS', 'NAME'),
('NAPTR', '0 0 a B c NAME'),
('PTR', 'NAME'),
('PX', '65535 NAME NAME'),
('RP', 'NAME NAME'),
('RT', '0 NAME'),
('SRV', '0 0 0 NAME'),
('RRSIG',
'A 1 3 3600 20200701000000 20200601000000 1 NAME Ym9ndXM=')
]
for rdtype, text in cases:
upper_origin = dns.name.from_text('EXAMPLE')
lower_origin = dns.name.from_text('example')
canonical_text = text.replace('NAME', 'name')
rdata = dns.rdata.from_text(dns.rdataclass.IN, rdtype, text,
origin=upper_origin, relativize=False)
canonical_rdata = dns.rdata.from_text(dns.rdataclass.IN, rdtype,
canonical_text,
origin=lower_origin,
relativize=False)
digestable_wire = rdata.to_digestable()
f = io.BytesIO()
canonical_rdata.to_wire(f)
expected_wire = f.getvalue()
self.assertEqual(digestable_wire, expected_wire)
def test_digestable_no_downcasing(self):
# Make sure that currently known types with domain names that
# are NOT supposed to be downcased when canonicalized are
# handled properly.
#
cases = [
('HIP', '2 200100107B1A74DF365639CC39F1D578 Ym9ndXM= NAME name'),
('IPSECKEY', '10 3 2 NAME Ym9ndXM='),
('NSEC', 'NAME A'),
]
for rdtype, text in cases:
origin = dns.name.from_text('example')
rdata = dns.rdata.from_text(dns.rdataclass.IN, rdtype, text,
origin=origin, relativize=False)
digestable_wire = rdata.to_digestable(origin)
expected_wire = rdata.to_wire(origin=origin)
self.assertEqual(digestable_wire, expected_wire)
def test_basic_relations(self):
r1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.1')
r2 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.2')
self.assertTrue(r1 == r1)
self.assertTrue(r1 != r2)
self.assertTrue(r1 < r2)
self.assertTrue(r1 <= r2)
self.assertTrue(r2 > r1)
self.assertTrue(r2 >= r1)
def test_incompatible_relations(self):
r1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.1')
r2 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.AAAA,
'::1')
for oper in [operator.lt, operator.le, operator.ge, operator.gt]:
self.assertRaises(TypeError, lambda: oper(r1, r2))
self.assertFalse(r1 == r2)
self.assertTrue(r1 != r2)
def test_immutability(self):
def bad1():
r = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.1')
r.address = '10.0.0.2'
self.assertRaises(TypeError, bad1)
def bad2():
r = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.1')
del r.address
self.assertRaises(TypeError, bad2)
def test_pickle(self):
r1 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.A,
'10.0.0.1')
p = pickle.dumps(r1)
r2 = pickle.loads(p)
self.assertEqual(r1, r2)
# Pickle something with a longer inheritance chain
r3 = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX,
'10 mail.example.')
p = pickle.dumps(r3)
r4 = pickle.loads(p)
self.assertEqual(r3, r4)
def test_AFSDB_properties(self):
rd = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.AFSDB,
'0 afsdb.example.')
self.assertEqual(rd.preference, rd.subtype)
self.assertEqual(rd.exchange, rd.hostname)
def equal_loc(self, a, b):
rda = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.LOC, a)
rdb = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.LOC, b)
self.assertEqual(rda, rdb)
def test_misc_good_LOC_text(self):
# test just degrees
self.equal_loc('60 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 0 0 N 24 39 0.000 E 10.00m 20m 2000m 20m')
self.equal_loc('60 0 0 N 24 E 10.00m 20m 2000m 20m',
'60 0 0 N 24 0 0 E 10.00m 20m 2000m 20m')
# test variable length latitude
self.equal_loc('60 9 0.510 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.51 N 24 39 0.000 E 10.00m 20m 2000m 20m')
self.equal_loc('60 9 0.500 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.5 N 24 39 0.000 E 10.00m 20m 2000m 20m')
self.equal_loc('60 9 1.000 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 1 N 24 39 0.000 E 10.00m 20m 2000m 20m')
# test variable length longtitude
self.equal_loc('60 9 0.000 N 24 39 0.510 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.51 E 10.00m 20m 2000m 20m')
self.equal_loc('60 9 0.000 N 24 39 0.500 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.5 E 10.00m 20m 2000m 20m')
self.equal_loc('60 9 0.000 N 24 39 1.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 1 E 10.00m 20m 2000m 20m')
# test siz, hp, vp defaults
self.equal_loc('60 9 0.510 N 24 39 0.000 E 10.00m',
'60 9 0.51 N 24 39 0.000 E 10.00m 1m 10000m 10m')
self.equal_loc('60 9 0.510 N 24 39 0.000 E 10.00m 2m',
'60 9 0.51 N 24 39 0.000 E 10.00m 2m 10000m 10m')
self.equal_loc('60 9 0.510 N 24 39 0.000 E 10.00m 2m 2000m',
'60 9 0.51 N 24 39 0.000 E 10.00m 2m 2000m 10m')
# test siz, hp, vp optional units
self.equal_loc('60 9 0.510 N 24 39 0.000 E 1m 20m 2000m 20m',
'60 9 0.51 N 24 39 0.000 E 1 20 2000 20')
def test_LOC_to_text_SW_hemispheres(self):
# As an extra, we test int->float conversion in the constructor
loc = LOC(dns.rdataclass.IN, dns.rdatatype.LOC, -60, -24, 1)
text = '60 0 0.000 S 24 0 0.000 W 0.01m'
self.assertEqual(loc.to_text(), text)
def test_zero_size(self):
# This is to exercise the 0 path in _exponent_of.
loc = dns.rdata.from_text('in', 'loc', '60 S 24 W 1 0')
self.assertEqual(loc.size, 0.0)
def test_bad_LOC_text(self):
bad_locs = ['60 9 a.000 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 60.000 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.00a N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.0001 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 Z 24 39 0.000 E 10.00m 20m 2000m 20m',
'91 9 0.000 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 60 0.000 N 24 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 a.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 60.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.00a E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.0001 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.000 Z 10.00m 20m 2000m 20m',
'60 9 0.000 N 181 39 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 60 0.000 E 10.00m 20m 2000m 20m',
'60 9 0.000 N 24 39 0.000 E 10.00m 100000000m 2000m 20m',
'60 9 0.000 N 24 39 0.000 E 10.00m 20m 100000000m 20m',
'60 9 0.000 N 24 39 0.000 E 10.00m 20m 20m 100000000m',
]
for loc in bad_locs:
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.LOC, loc)
def test_bad_LOC_wire(self):
bad_locs = [(0, 0, 0, 0x934fd901, 0x80000000, 100),
(0, 0, 0, 0x6cb026ff, 0x80000000, 100),
(0, 0, 0, 0x80000000, 0xa69fb201, 100),
(0, 0, 0, 0x80000000, 0x59604dff, 100),
(0xa0, 0, 0, 0x80000000, 0x80000000, 100),
(0x0a, 0, 0, 0x80000000, 0x80000000, 100),
(0, 0xa0, 0, 0x80000000, 0x80000000, 100),
(0, 0x0a, 0, 0x80000000, 0x80000000, 100),
(0, 0, 0xa0, 0x80000000, 0x80000000, 100),
(0, 0, 0x0a, 0x80000000, 0x80000000, 100),
]
for t in bad_locs:
with self.assertRaises(dns.exception.FormError):
wire = struct.pack('!BBBBIII', 0, t[0], t[1], t[2],
t[3], t[4], t[5])
dns.rdata.from_wire(dns.rdataclass.IN, dns.rdatatype.LOC,
wire, 0, len(wire))
with self.assertRaises(dns.exception.FormError):
wire = struct.pack('!BBBBIII', 1, 0, 0, 0, 0, 0, 0)
dns.rdata.from_wire(dns.rdataclass.IN, dns.rdatatype.LOC,
wire, 0, len(wire))
def equal_wks(self, a, b):
rda = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.WKS, a)
rdb = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.WKS, b)
self.assertEqual(rda, rdb)
def test_misc_good_WKS_text(self):
self.equal_wks('10.0.0.1 tcp ( http )', '10.0.0.1 6 ( 80 )')
self.equal_wks('10.0.0.1 udp ( domain )', '10.0.0.1 17 ( 53 )')
def test_misc_bad_WKS_text(self):
try:
dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.WKS,
'10.0.0.1 132 ( domain )')
self.assertTrue(False) # should not happen
except dns.exception.SyntaxError as e:
self.assertIsInstance(e.__cause__, NotImplementedError)
def test_GPOS_float_converters(self):
rd = dns.rdata.from_text('in', 'gpos', '49 0 0')
self.assertEqual(rd.float_latitude, 49.0)
self.assertEqual(rd.float_longitude, 0.0)
self.assertEqual(rd.float_altitude, 0.0)
def test_GPOS_constructor_conversion(self):
rd = GPOS(dns.rdataclass.IN, dns.rdatatype.GPOS, 49.0, 0.0, 0.0)
self.assertEqual(rd.float_latitude, 49.0)
self.assertEqual(rd.float_longitude, 0.0)
self.assertEqual(rd.float_altitude, 0.0)
rd = GPOS(dns.rdataclass.IN, dns.rdatatype.GPOS, 49, 0, 0)
self.assertEqual(rd.float_latitude, 49.0)
self.assertEqual(rd.float_longitude, 0.0)
self.assertEqual(rd.float_altitude, 0.0)
def test_bad_GPOS_text(self):
bad_gpos = ['"-" "116.8652" "250"',
'"+" "116.8652" "250"',
'"" "116.8652" "250"',
'"." "116.8652" "250"',
'".a" "116.8652" "250"',
'"a." "116.8652" "250"',
'"a.a" "116.8652" "250"',
# We don't need to test all the bad permutations again
# but we do want to test that badness is detected
# in the other strings
'"0" "a" "250"',
'"0" "0" "a"',
# finally test bounds
'"90.1" "0" "0"',
'"-90.1" "0" "0"',
'"0" "180.1" "0"',
'"0" "-180.1" "0"',
]
for gpos in bad_gpos:
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.GPOS, gpos)
def test_bad_GPOS_wire(self):
bad_gpos = [b'\x01',
b'\x01\x31\x01',
b'\x01\x31\x01\x31\x01',
]
for wire in bad_gpos:
self.assertRaises(dns.exception.FormError,
lambda: dns.rdata.from_wire(dns.rdataclass.IN,
dns.rdatatype.GPOS,
wire, 0, len(wire)))
def test_chaos(self):
# avoid red spot on our coverage :)
r1 = dns.rdata.from_text(dns.rdataclass.CH, dns.rdatatype.A,
'chaos. 12345')
w = r1.to_wire()
r2 = dns.rdata.from_wire(dns.rdataclass.CH, dns.rdatatype.A, w, 0,
len(w))
self.assertEqual(r1, r2)
self.assertEqual(r1.domain, dns.name.from_text('chaos'))
# the address input is octal
self.assertEqual(r1.address, 0o12345)
self.assertEqual(r1.to_text(), 'chaos. 12345')
def test_opt_repr(self):
opt = OPT(4096, dns.rdatatype.OPT, ())
self.assertEqual(repr(opt), '<DNS CLASS4096 OPT rdata: >')
def test_opt_short_lengths(self):
with self.assertRaises(dns.exception.FormError):
parser = dns.wire.Parser(bytes.fromhex('f00102'))
OPT.from_wire_parser(4096, dns.rdatatype.OPT, parser)
with self.assertRaises(dns.exception.FormError):
parser = dns.wire.Parser(bytes.fromhex('f00100030000'))
OPT.from_wire_parser(4096, dns.rdatatype.OPT, parser)
def test_from_wire_parser(self):
wire = bytes.fromhex('01020304')
rdata = dns.rdata.from_wire('in', 'a', wire, 0, 4)
self.assertEqual(rdata, dns.rdata.from_text('in', 'a', '1.2.3.4'))
def test_unpickle(self):
expected_mx = dns.rdata.from_text('in', 'mx', '10 mx.example.')
with open(here('mx-2-0.pickle'), 'rb') as f:
mx = pickle.load(f)
self.assertEqual(mx, expected_mx)
self.assertIsNone(mx.rdcomment)
def test_escaped_newline_in_quoted_string(self):
rd = dns.rdata.from_text('in', 'txt', '"foo\\\nbar"')
self.assertEqual(rd.strings, (b'foo\nbar',))
self.assertEqual(rd.to_text(), '"foo\\010bar"')
def test_escaped_newline_in_nonquoted_string(self):
with self.assertRaises(dns.exception.UnexpectedEnd):
dns.rdata.from_text('in', 'txt', 'foo\\\nbar')
def test_wordbreak(self):
text = b'abcdefgh'
self.assertEqual(dns.rdata._wordbreak(text, 4), 'abcd efgh')
self.assertEqual(dns.rdata._wordbreak(text, 0), 'abcdefgh')
def test_escapify(self):
self.assertEqual(dns.rdata._escapify('abc'), 'abc')
self.assertEqual(dns.rdata._escapify(b'abc'), 'abc')
self.assertEqual(dns.rdata._escapify(bytearray(b'abc')), 'abc')
self.assertEqual(dns.rdata._escapify(b'ab"c'), 'ab\\"c')
self.assertEqual(dns.rdata._escapify(b'ab\\c'), 'ab\\\\c')
self.assertEqual(dns.rdata._escapify(b'ab\x01c'), 'ab\\001c')
def test_truncate_bitmap(self):
self.assertEqual(dns.rdata._truncate_bitmap(b'\x00\x01\x00\x00'),
b'\x00\x01')
self.assertEqual(dns.rdata._truncate_bitmap(b'\x00\x01\x00\x01'),
b'\x00\x01\x00\x01')
self.assertEqual(dns.rdata._truncate_bitmap(b'\x00\x00\x00\x00'),
b'\x00')
def test_covers_and_extended_rdatatype(self):
rd = dns.rdata.from_text('in', 'a', '10.0.0.1')
self.assertEqual(rd.covers(), dns.rdatatype.NONE)
self.assertEqual(rd.extended_rdatatype(), 0x00000001)
rd = dns.rdata.from_text('in', 'rrsig',
'NSEC 1 3 3600 ' +
'20200101000000 20030101000000 ' +
'2143 foo Ym9ndXM=')
self.assertEqual(rd.covers(), dns.rdatatype.NSEC)
self.assertEqual(rd.extended_rdatatype(), 0x002f002e)
def test_uncomparable(self):
rd = dns.rdata.from_text('in', 'a', '10.0.0.1')
self.assertFalse(rd == 'a')
self.assertTrue(rd != 'a')
def test_bad_generic(self):
# does not start with \#
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'type45678', '# 7 000a03666f6f00')
# wrong length
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'type45678', '\\# 6 000a03666f6f00')
def test_covered_repr(self):
text = 'NSEC 1 3 3600 20190101000000 20030101000000 ' + \
'2143 foo Ym9ndXM='
rd = dns.rdata.from_text('in', 'rrsig', text)
self.assertEqual(repr(rd), '<DNS IN RRSIG(NSEC) rdata: ' + text + '>')
def test_bad_registration_implementing_known_type_with_wrong_name(self):
# Try to register an implementation at the MG codepoint that isn't
# called "MG"
with self.assertRaises(dns.rdata.RdatatypeExists):
dns.rdata.register_type(None, dns.rdatatype.MG, 'NOTMG')
def test_registration_implementing_known_type_with_right_name(self):
# Try to register an implementation at the MD codepoint
dns.rdata.register_type(tests.md_module, dns.rdatatype.MD, 'MD')
rd = dns.rdata.from_text('in', 'md', 'foo.')
self.assertEqual(rd.target, dns.name.from_text('foo.'))
def test_CERT_with_string_type(self):
rd = dns.rdata.from_text('in', 'cert', 'SPKI 1 PRIVATEOID Ym9ndXM=')
self.assertEqual(rd.to_text(), 'SPKI 1 PRIVATEOID Ym9ndXM=')
def test_CERT_algorithm(self):
rd = dns.rdata.from_text('in', 'cert', 'SPKI 1 0 Ym9ndXM=')
self.assertEqual(rd.algorithm, 0)
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'cert', 'SPKI 1 -1 Ym9ndXM=')
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'cert', 'SPKI 1 256 Ym9ndXM=')
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'cert', 'SPKI 1 BOGUS Ym9ndXM=')
def test_bad_URI_text(self):
# empty target
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'uri', '10 1 ""')
# no target
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'uri', '10 1')
def test_bad_URI_wire(self):
wire = bytes.fromhex('000a0001')
with self.assertRaises(dns.exception.FormError):
dns.rdata.from_wire('in', 'uri', wire, 0, 4)
def test_bad_NSAP_text(self):
# does not start with 0x
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'nsap', '0y4700')
# odd hex string length
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'nsap', '0x470')
def test_bad_CAA_text(self):
# tag too long
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'caa',
'0 ' + 'a' * 256 + ' "ca.example.net"')
# tag not alphanumeric
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'caa',
'0 a-b "ca.example.net"')
def test_bad_HIP_text(self):
# hit too long
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'hip',
'2 ' +
'00' * 256 +
' Ym9ndXM=')
def test_bad_sigtime(self):
try:
dns.rdata.from_text('in', 'rrsig',
'NSEC 1 3 3600 ' +
'202001010000000 20030101000000 ' +
'2143 foo Ym9ndXM=')
self.assertTrue(False) # should not happen
except dns.exception.SyntaxError as e:
self.assertIsInstance(e.__cause__,
dns.rdtypes.ANY.RRSIG.BadSigTime)
try:
dns.rdata.from_text('in', 'rrsig',
'NSEC 1 3 3600 ' +
'20200101000000 2003010100000 ' +
'2143 foo Ym9ndXM=')
self.assertTrue(False) # should not happen
except dns.exception.SyntaxError as e:
self.assertIsInstance(e.__cause__,
dns.rdtypes.ANY.RRSIG.BadSigTime)
def test_empty_TXT(self):
# hit too long
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'txt', '')
def test_too_long_TXT(self):
# hit too long
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text('in', 'txt', 'a' * 256)
def equal_smimea(self, a, b):
a = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.SMIMEA, a)
b = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.SMIMEA, b)
self.assertEqual(a, b)
def test_good_SMIMEA(self):
self.equal_smimea('3 0 1 aabbccddeeff', '3 0 01 AABBCCDDEEFF')
def test_bad_SMIMEA(self):
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.SMIMEA, '1 1 1 aGVsbG8gd29ybGQh')
def test_DNSKEY_chunking(self):
inputs = ( # each with chunking as given by dig, unusual chunking, and no chunking
# example 1
(
'257 3 13 aCoEWYBBVsP9Fek2oC8yqU8ocKmnS1iDSFZNORnQuHKtJ9Wpyz+kNryq uB78Pyk/NTEoai5bxoipVQQXzHlzyg==',
'257 3 13 aCoEWYBBVsP9Fek2oC8yqU8ocK mnS1iDSFZNORnQuHKtJ9Wpyz+kNryquB78Pyk/ NTEoai5bxoipVQQXzHlzyg==',
'257 3 13 aCoEWYBBVsP9Fek2oC8yqU8ocKmnS1iDSFZNORnQuHKtJ9Wpyz+kNryquB78Pyk/NTEoai5bxoipVQQXzHlzyg==',
),
# example 2
(
'257 3 8 AwEAAcw5QLr0IjC0wKbGoBPQv4qmeqHy9mvL5qGQTuaG5TSrNqEAR6b/ qvxDx6my4JmEmjUPA1JeEI9YfTUieMr2UZflu7aIbZFLw0vqiYrywCGr CHXLalOrEOmrvAxLvq4vHtuTlH7JIszzYBSes8g1vle6KG7xXiP3U5Ll 96Qiu6bZ31rlMQSPB20xbqJJh6psNSrQs41QvdcXAej+K2Hl1Wd8kPri ec4AgiBEh8sk5Pp8W9ROLQ7PcbqqttFaW2m7N/Wy4qcFU13roWKDEAst bxH5CHPoBfZSbIwK4KM6BK/uDHpSPIbiOvOCW+lvu9TAiZPc0oysY6as lO7jXv16Gws=',
'257 3 8 AwEAAcw5QLr0IjC0wKbGoBPQv4qmeq Hy9mvL5qGQTuaG5TSrNqEA R6b/qvxDx6my4JmEmjUPA1JeEI9Y fTUieMr2UZflu7aIbZFLw0vqiYrywCGrC HXLalOrEOmrvAxLvq4vHtuTlH7JIszzYBSes8g1vle6KG7 xXiP3U5Ll 96Qiu6bZ31rlMQSPB20xbqJJh6psNSrQs41QvdcXAej+K2Hl1Wd8kPriec4AgiBEh8sk5Pp8W9ROLQ7PcbqqttFaW2m7N/Wy4qcFU13roWKDEAst bxH5CHPoBfZSbIwK4KM6BK/uDHpSPIbiOvOCW+lvu9TAiZPc0oysY6as lO7jXv16Gws=',
'257 3 8 AwEAAcw5QLr0IjC0wKbGoBPQv4qmeqHy9mvL5qGQTuaG5TSrNqEAR6b/qvxDx6my4JmEmjUPA1JeEI9YfTUieMr2UZflu7aIbZFLw0vqiYrywCGrCHXLalOrEOmrvAxLvq4vHtuTlH7JIszzYBSes8g1vle6KG7xXiP3U5Ll96Qiu6bZ31rlMQSPB20xbqJJh6psNSrQs41QvdcXAej+K2Hl1Wd8kPriec4AgiBEh8sk5Pp8W9ROLQ7PcbqqttFaW2m7N/Wy4qcFU13roWKDEAstbxH5CHPoBfZSbIwK4KM6BK/uDHpSPIbiOvOCW+lvu9TAiZPc0oysY6aslO7jXv16Gws=',
),
# example 3
(
'256 3 8 AwEAAday3UX323uVzQqtOMQ7EHQYfD5Ofv4akjQGN2zY5AgB/2jmdR/+ 1PvXFqzKCAGJv4wjABEBNWLLFm7ew1hHMDZEKVL17aml0EBKI6Dsz6Mx t6n7ScvLtHaFRKaxT4i2JxiuVhKdQR9XGMiWAPQKrRM5SLG0P+2F+TLK l3D0L/cD',
'256 3 8 AwEAAday3UX323uVzQqtOMQ7EHQYfD5Ofv4akjQGN2zY5 AgB/2jmdR/+1PvXFqzKCAGJv4wjABEBNWLLFm7ew1hHMDZEKVL17aml0EBKI6Dsz6Mxt6n7ScvLtHaFRKaxT4i2JxiuVhKdQR9XGMiWAPQKrRM5SLG0P+2F+ TLKl3D0L/cD',
'256 3 8 AwEAAday3UX323uVzQqtOMQ7EHQYfD5Ofv4akjQGN2zY5AgB/2jmdR/+1PvXFqzKCAGJv4wjABEBNWLLFm7ew1hHMDZEKVL17aml0EBKI6Dsz6Mxt6n7ScvLtHaFRKaxT4i2JxiuVhKdQR9XGMiWAPQKrRM5SLG0P+2F+TLKl3D0L/cD',
),
)
output_map = {
32: (
'257 3 13 aCoEWYBBVsP9Fek2oC8yqU8ocKmnS1iD SFZNORnQuHKtJ9Wpyz+kNryquB78Pyk/ NTEoai5bxoipVQQXzHlzyg==',
'257 3 8 AwEAAcw5QLr0IjC0wKbGoBPQv4qmeqHy 9mvL5qGQTuaG5TSrNqEAR6b/qvxDx6my 4JmEmjUPA1JeEI9YfTUieMr2UZflu7aI bZFLw0vqiYrywCGrCHXLalOrEOmrvAxL vq4vHtuTlH7JIszzYBSes8g1vle6KG7x XiP3U5Ll96Qiu6bZ31rlMQSPB20xbqJJ h6psNSrQs41QvdcXAej+K2Hl1Wd8kPri ec4AgiBEh8sk5Pp8W9ROLQ7PcbqqttFa W2m7N/Wy4qcFU13roWKDEAstbxH5CHPo BfZSbIwK4KM6BK/uDHpSPIbiOvOCW+lv u9TAiZPc0oysY6aslO7jXv16Gws=',
'256 3 8 AwEAAday3UX323uVzQqtOMQ7EHQYfD5O fv4akjQGN2zY5AgB/2jmdR/+1PvXFqzK CAGJv4wjABEBNWLLFm7ew1hHMDZEKVL1 7aml0EBKI6Dsz6Mxt6n7ScvLtHaFRKax T4i2JxiuVhKdQR9XGMiWAPQKrRM5SLG0 P+2F+TLKl3D0L/cD',
),
56: (t[0] for t in inputs),
0: (t[0][:12] + t[0][12:].replace(' ', '') for t in inputs)
}
for chunksize, outputs in output_map.items():
for input, output in zip(inputs, outputs):
for input_variation in input:
rr = dns.rdata.from_text('IN', 'DNSKEY', input_variation)
new_text = rr.to_text(chunksize=chunksize)
self.assertEqual(output, new_text)
class UtilTestCase(unittest.TestCase):
def test_Gateway_bad_type0(self):
with self.assertRaises(SyntaxError):
dns.rdtypes.util.Gateway(0, 'bad.')
def test_Gateway_bad_type3(self):
with self.assertRaises(SyntaxError):
dns.rdtypes.util.Gateway(3, 'bad.')
def test_Gateway_type4(self):
with self.assertRaises(SyntaxError):
dns.rdtypes.util.Gateway(4)
with self.assertRaises(dns.exception.FormError):
dns.rdtypes.util.Gateway.from_wire_parser(4, None)
def test_Bitmap(self):
b = dns.rdtypes.util.Bitmap
tok = dns.tokenizer.Tokenizer('A MX')
windows = b.from_text(tok).windows
ba = bytearray()
ba.append(0x40) # bit 1, for A
ba.append(0x01) # bit 15, for MX
self.assertEqual(windows, [(0, bytes(ba))])
def test_Bitmap_with_duplicate_types(self):
b = dns.rdtypes.util.Bitmap
tok = dns.tokenizer.Tokenizer('A MX A A MX')
windows = b.from_text(tok).windows
ba = bytearray()
ba.append(0x40) # bit 1, for A
ba.append(0x01) # bit 15, for MX
self.assertEqual(windows, [(0, bytes(ba))])
def test_Bitmap_with_out_of_order_types(self):
b = dns.rdtypes.util.Bitmap
tok = dns.tokenizer.Tokenizer('MX A')
windows = b.from_text(tok).windows
ba = bytearray()
ba.append(0x40) # bit 1, for A
ba.append(0x01) # bit 15, for MX
self.assertEqual(windows, [(0, bytes(ba))])
def test_Bitmap_zero_padding_works(self):
b = dns.rdtypes.util.Bitmap
tok = dns.tokenizer.Tokenizer('SRV')
windows = b.from_text(tok).windows
ba = bytearray()
ba.append(0)
ba.append(0)
ba.append(0)
ba.append(0)
ba.append(0x40) # bit 33, for SRV
self.assertEqual(windows, [(0, bytes(ba))])
def test_Bitmap_has_type_0_set(self):
b = dns.rdtypes.util.Bitmap
with self.assertRaises(dns.exception.SyntaxError):
tok = dns.tokenizer.Tokenizer('NONE A MX')
b.from_text(tok)
def test_Bitmap_empty_window_not_written(self):
b = dns.rdtypes.util.Bitmap
tok = dns.tokenizer.Tokenizer('URI CAA') # types 256 and 257
windows = b.from_text(tok).windows
ba = bytearray()
ba.append(0xc0) # bits 0 and 1 in window 1
self.assertEqual(windows, [(1, bytes(ba))])
def test_Bitmap_ok_parse(self):
parser = dns.wire.Parser(b'\x00\x01\x40')
b = dns.rdtypes.util.Bitmap([])
windows = b.from_wire_parser(parser).windows
self.assertEqual(windows, [(0, b'@')])
def test_Bitmap_0_length_window_parse(self):
parser = dns.wire.Parser(b'\x00\x00')
with self.assertRaises(ValueError):
b = dns.rdtypes.util.Bitmap([])
b.from_wire_parser(parser)
def test_Bitmap_too_long_parse(self):
parser = dns.wire.Parser(b'\x00\x21' + b'\x01' * 33)
with self.assertRaises(ValueError):
b = dns.rdtypes.util.Bitmap([])
b.from_wire_parser(parser)
def test_compressed_in_generic_is_bad(self):
with self.assertRaises(dns.exception.SyntaxError):
dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.MX,
r'\# 4 000aC000')
def test_rdataset_ttl_conversion(self):
rds1 = dns.rdataset.from_text('in', 'a', 300, '10.0.0.1')
self.assertEqual(rds1.ttl, 300)
rds2 = dns.rdataset.from_text('in', 'a', '5m', '10.0.0.1')
self.assertEqual(rds2.ttl, 300)
with self.assertRaises(ValueError):
dns.rdataset.from_text('in', 'a', 1.6, '10.0.0.1')
with self.assertRaises(dns.ttl.BadTTL):
dns.rdataset.from_text('in', 'a', '10.0.0.1', '10.0.0.2')
Rdata = dns.rdata.Rdata
class RdataConvertersTestCase(unittest.TestCase):
def test_as_name(self):
n = dns.name.from_text('hi')
self.assertEqual(Rdata._as_name(n), n)
self.assertEqual(Rdata._as_name('hi'), n)
with self.assertRaises(ValueError):
Rdata._as_name(100)
def test_as_uint8(self):
self.assertEqual(Rdata._as_uint8(0), 0)
with self.assertRaises(ValueError):
Rdata._as_uint8('hi')
with self.assertRaises(ValueError):
Rdata._as_uint8(-1)
with self.assertRaises(ValueError):
Rdata._as_uint8(256)
def test_as_uint16(self):
self.assertEqual(Rdata._as_uint16(0), 0)
with self.assertRaises(ValueError):
Rdata._as_uint16('hi')
with self.assertRaises(ValueError):
Rdata._as_uint16(-1)
with self.assertRaises(ValueError):
Rdata._as_uint16(65536)
def test_as_uint32(self):
self.assertEqual(Rdata._as_uint32(0), 0)
with self.assertRaises(ValueError):
Rdata._as_uint32('hi')
with self.assertRaises(ValueError):
Rdata._as_uint32(-1)
with self.assertRaises(ValueError):
Rdata._as_uint32(2 ** 32)
def test_as_uint48(self):
self.assertEqual(Rdata._as_uint48(0), 0)
with self.assertRaises(ValueError):
Rdata._as_uint48('hi')
with self.assertRaises(ValueError):
Rdata._as_uint48(-1)
with self.assertRaises(ValueError):
Rdata._as_uint48(2 ** 48)
def test_as_int(self):
self.assertEqual(Rdata._as_int(0, 0, 10), 0)
with self.assertRaises(ValueError):
Rdata._as_int('hi', 0, 10)
with self.assertRaises(ValueError):
Rdata._as_int(-1, 0, 10)
with self.assertRaises(ValueError):
Rdata._as_int(11, 0, 10)
def test_as_bool(self):
self.assertEqual(Rdata._as_bool(True), True)
self.assertEqual(Rdata._as_bool(False), False)
with self.assertRaises(ValueError):
Rdata._as_bool('hi')
def test_as_ttl(self):
self.assertEqual(Rdata._as_ttl(300), 300)
self.assertEqual(Rdata._as_ttl('5m'), 300)
self.assertEqual(Rdata._as_ttl(dns.ttl.MAX_TTL), dns.ttl.MAX_TTL)
with self.assertRaises(dns.ttl.BadTTL):
Rdata._as_ttl('hi')
with self.assertRaises(ValueError):
Rdata._as_ttl(1.9)
with self.assertRaises(ValueError):
Rdata._as_ttl(dns.ttl.MAX_TTL + 1)
if __name__ == '__main__':
unittest.main()