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
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
|
import unittest
import textwrap
from test import support, mock_socket
import socket
import io
import smtpd
import asyncore
class DummyServer(smtpd.SMTPServer):
def __init__(self, *args, **kwargs):
smtpd.SMTPServer.__init__(self, *args, **kwargs)
self.messages = []
if self._decode_data:
self.return_status = 'return status'
else:
self.return_status = b'return status'
def process_message(self, peer, mailfrom, rcpttos, data, **kw):
self.messages.append((peer, mailfrom, rcpttos, data))
if data == self.return_status:
return '250 Okish'
if 'mail_options' in kw and 'SMTPUTF8' in kw['mail_options']:
return '250 SMTPUTF8 message okish'
class DummyDispatcherBroken(Exception):
pass
class BrokenDummyServer(DummyServer):
def listen(self, num):
raise DummyDispatcherBroken()
class SMTPDServerTest(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
def test_process_message_unimplemented(self):
server = smtpd.SMTPServer((support.HOST, 0), ('b', 0),
decode_data=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True)
def write_line(line):
channel.socket.queue_recv(line)
channel.handle_read()
write_line(b'HELO example')
write_line(b'MAIL From:eggs@example')
write_line(b'RCPT To:spam@example')
write_line(b'DATA')
self.assertRaises(NotImplementedError, write_line, b'spam\r\n.\r\n')
def test_decode_data_default_warns(self):
with self.assertWarns(DeprecationWarning):
smtpd.SMTPServer((support.HOST, 0), ('b', 0))
def test_decode_data_and_enable_SMTPUTF8_raises(self):
self.assertRaises(
ValueError,
smtpd.SMTPServer,
(support.HOST, 0),
('b', 0),
enable_SMTPUTF8=True,
decode_data=True)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
class DebuggingServerTest(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
def send_data(self, channel, data, enable_SMTPUTF8=False):
def write_line(line):
channel.socket.queue_recv(line)
channel.handle_read()
write_line(b'EHLO example')
if enable_SMTPUTF8:
write_line(b'MAIL From:eggs@example BODY=8BITMIME SMTPUTF8')
else:
write_line(b'MAIL From:eggs@example')
write_line(b'RCPT To:spam@example')
write_line(b'DATA')
write_line(data)
write_line(b'.')
def test_process_message_with_decode_data_true(self):
server = smtpd.DebuggingServer((support.HOST, 0), ('b', 0),
decode_data=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True)
with support.captured_stdout() as s:
self.send_data(channel, b'From: test\n\nhello\n')
stdout = s.getvalue()
self.assertEqual(stdout, textwrap.dedent("""\
---------- MESSAGE FOLLOWS ----------
From: test
X-Peer: peer-address
hello
------------ END MESSAGE ------------
"""))
def test_process_message_with_decode_data_false(self):
server = smtpd.DebuggingServer((support.HOST, 0), ('b', 0),
decode_data=False)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=False)
with support.captured_stdout() as s:
self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n')
stdout = s.getvalue()
self.assertEqual(stdout, textwrap.dedent("""\
---------- MESSAGE FOLLOWS ----------
b'From: test'
b'X-Peer: peer-address'
b''
b'h\\xc3\\xa9llo\\xff'
------------ END MESSAGE ------------
"""))
def test_process_message_with_enable_SMTPUTF8_true(self):
server = smtpd.DebuggingServer((support.HOST, 0), ('b', 0),
enable_SMTPUTF8=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True)
with support.captured_stdout() as s:
self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n')
stdout = s.getvalue()
self.assertEqual(stdout, textwrap.dedent("""\
---------- MESSAGE FOLLOWS ----------
b'From: test'
b'X-Peer: peer-address'
b''
b'h\\xc3\\xa9llo\\xff'
------------ END MESSAGE ------------
"""))
def test_process_SMTPUTF8_message_with_enable_SMTPUTF8_true(self):
server = smtpd.DebuggingServer((support.HOST, 0), ('b', 0),
enable_SMTPUTF8=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True)
with support.captured_stdout() as s:
self.send_data(channel, b'From: test\n\nh\xc3\xa9llo\xff\n',
enable_SMTPUTF8=True)
stdout = s.getvalue()
self.assertEqual(stdout, textwrap.dedent("""\
---------- MESSAGE FOLLOWS ----------
mail options: ['BODY=8BITMIME', 'SMTPUTF8']
b'From: test'
b'X-Peer: peer-address'
b''
b'h\\xc3\\xa9llo\\xff'
------------ END MESSAGE ------------
"""))
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
class TestFamilyDetection(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
@unittest.skipUnless(support.IPV6_ENABLED, "IPv6 not enabled")
def test_socket_uses_IPv6(self):
server = smtpd.SMTPServer((support.HOSTv6, 0), (support.HOST, 0),
decode_data=False)
self.assertEqual(server.socket.family, socket.AF_INET6)
def test_socket_uses_IPv4(self):
server = smtpd.SMTPServer((support.HOST, 0), (support.HOSTv6, 0),
decode_data=False)
self.assertEqual(server.socket.family, socket.AF_INET)
class TestRcptOptionParsing(unittest.TestCase):
error_response = (b'555 RCPT TO parameters not recognized or not '
b'implemented\r\n')
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, channel, line):
channel.socket.queue_recv(line)
channel.handle_read()
def test_params_rejected(self):
server = DummyServer((support.HOST, 0), ('b', 0), decode_data=False)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=False)
self.write_line(channel, b'EHLO example')
self.write_line(channel, b'MAIL from: <foo@example.com> size=20')
self.write_line(channel, b'RCPT to: <foo@example.com> foo=bar')
self.assertEqual(channel.socket.last, self.error_response)
def test_nothing_accepted(self):
server = DummyServer((support.HOST, 0), ('b', 0), decode_data=False)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=False)
self.write_line(channel, b'EHLO example')
self.write_line(channel, b'MAIL from: <foo@example.com> size=20')
self.write_line(channel, b'RCPT to: <foo@example.com>')
self.assertEqual(channel.socket.last, b'250 OK\r\n')
class TestMailOptionParsing(unittest.TestCase):
error_response = (b'555 MAIL FROM parameters not recognized or not '
b'implemented\r\n')
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, channel, line):
channel.socket.queue_recv(line)
channel.handle_read()
def test_with_decode_data_true(self):
server = DummyServer((support.HOST, 0), ('b', 0), decode_data=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=True)
self.write_line(channel, b'EHLO example')
for line in [
b'MAIL from: <foo@example.com> size=20 SMTPUTF8',
b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=8BITMIME',
b'MAIL from: <foo@example.com> size=20 BODY=UNKNOWN',
b'MAIL from: <foo@example.com> size=20 body=8bitmime',
]:
self.write_line(channel, line)
self.assertEqual(channel.socket.last, self.error_response)
self.write_line(channel, b'MAIL from: <foo@example.com> size=20')
self.assertEqual(channel.socket.last, b'250 OK\r\n')
def test_with_decode_data_false(self):
server = DummyServer((support.HOST, 0), ('b', 0), decode_data=False)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, decode_data=False)
self.write_line(channel, b'EHLO example')
for line in [
b'MAIL from: <foo@example.com> size=20 SMTPUTF8',
b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=8BITMIME',
]:
self.write_line(channel, line)
self.assertEqual(channel.socket.last, self.error_response)
self.write_line(
channel,
b'MAIL from: <foo@example.com> size=20 SMTPUTF8 BODY=UNKNOWN')
self.assertEqual(
channel.socket.last,
b'501 Error: BODY can only be one of 7BIT, 8BITMIME\r\n')
self.write_line(
channel, b'MAIL from: <foo@example.com> size=20 body=8bitmime')
self.assertEqual(channel.socket.last, b'250 OK\r\n')
def test_with_enable_smtputf8_true(self):
server = DummyServer((support.HOST, 0), ('b', 0), enable_SMTPUTF8=True)
conn, addr = server.accept()
channel = smtpd.SMTPChannel(server, conn, addr, enable_SMTPUTF8=True)
self.write_line(channel, b'EHLO example')
self.write_line(
channel,
b'MAIL from: <foo@example.com> size=20 body=8bitmime smtputf8')
self.assertEqual(channel.socket.last, b'250 OK\r\n')
class SMTPDChannelTest(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOST, 0), ('b', 0),
decode_data=True)
conn, addr = self.server.accept()
self.channel = smtpd.SMTPChannel(self.server, conn, addr,
decode_data=True)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, line):
self.channel.socket.queue_recv(line)
self.channel.handle_read()
def test_broken_connect(self):
self.assertRaises(
DummyDispatcherBroken, BrokenDummyServer,
(support.HOST, 0), ('b', 0), decode_data=True)
def test_server_accept(self):
self.server.handle_accept()
def test_missing_data(self):
self.write_line(b'')
self.assertEqual(self.channel.socket.last,
b'500 Error: bad syntax\r\n')
def test_EHLO(self):
self.write_line(b'EHLO example')
self.assertEqual(self.channel.socket.last, b'250 HELP\r\n')
def test_EHLO_bad_syntax(self):
self.write_line(b'EHLO')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: EHLO hostname\r\n')
def test_EHLO_duplicate(self):
self.write_line(b'EHLO example')
self.write_line(b'EHLO example')
self.assertEqual(self.channel.socket.last,
b'503 Duplicate HELO/EHLO\r\n')
def test_EHLO_HELO_duplicate(self):
self.write_line(b'EHLO example')
self.write_line(b'HELO example')
self.assertEqual(self.channel.socket.last,
b'503 Duplicate HELO/EHLO\r\n')
def test_HELO(self):
name = smtpd.socket.getfqdn()
self.write_line(b'HELO example')
self.assertEqual(self.channel.socket.last,
'250 {}\r\n'.format(name).encode('ascii'))
def test_HELO_EHLO_duplicate(self):
self.write_line(b'HELO example')
self.write_line(b'EHLO example')
self.assertEqual(self.channel.socket.last,
b'503 Duplicate HELO/EHLO\r\n')
def test_HELP(self):
self.write_line(b'HELP')
self.assertEqual(self.channel.socket.last,
b'250 Supported commands: EHLO HELO MAIL RCPT ' + \
b'DATA RSET NOOP QUIT VRFY\r\n')
def test_HELP_command(self):
self.write_line(b'HELP MAIL')
self.assertEqual(self.channel.socket.last,
b'250 Syntax: MAIL FROM: <address>\r\n')
def test_HELP_command_unknown(self):
self.write_line(b'HELP SPAM')
self.assertEqual(self.channel.socket.last,
b'501 Supported commands: EHLO HELO MAIL RCPT ' + \
b'DATA RSET NOOP QUIT VRFY\r\n')
def test_HELO_bad_syntax(self):
self.write_line(b'HELO')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: HELO hostname\r\n')
def test_HELO_duplicate(self):
self.write_line(b'HELO example')
self.write_line(b'HELO example')
self.assertEqual(self.channel.socket.last,
b'503 Duplicate HELO/EHLO\r\n')
def test_HELO_parameter_rejected_when_extensions_not_enabled(self):
self.extended_smtp = False
self.write_line(b'HELO example')
self.write_line(b'MAIL from:<foo@example.com> SIZE=1234')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: MAIL FROM: <address>\r\n')
def test_MAIL_allows_space_after_colon(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from: <foo@example.com>')
self.assertEqual(self.channel.socket.last,
b'250 OK\r\n')
def test_extended_MAIL_allows_space_after_colon(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from: <foo@example.com> size=20')
self.assertEqual(self.channel.socket.last,
b'250 OK\r\n')
def test_NOOP(self):
self.write_line(b'NOOP')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_HELO_NOOP(self):
self.write_line(b'HELO example')
self.write_line(b'NOOP')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_NOOP_bad_syntax(self):
self.write_line(b'NOOP hi')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: NOOP\r\n')
def test_QUIT(self):
self.write_line(b'QUIT')
self.assertEqual(self.channel.socket.last, b'221 Bye\r\n')
def test_HELO_QUIT(self):
self.write_line(b'HELO example')
self.write_line(b'QUIT')
self.assertEqual(self.channel.socket.last, b'221 Bye\r\n')
def test_QUIT_arg_ignored(self):
self.write_line(b'QUIT bye bye')
self.assertEqual(self.channel.socket.last, b'221 Bye\r\n')
def test_bad_state(self):
self.channel.smtp_state = 'BAD STATE'
self.write_line(b'HELO example')
self.assertEqual(self.channel.socket.last,
b'451 Internal confusion\r\n')
def test_command_too_long(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from: ' +
b'a' * self.channel.command_size_limit +
b'@example')
self.assertEqual(self.channel.socket.last,
b'500 Error: line too long\r\n')
def test_MAIL_command_limit_extended_with_SIZE(self):
self.write_line(b'EHLO example')
fill_len = self.channel.command_size_limit - len('MAIL from:<@example>')
self.write_line(b'MAIL from:<' +
b'a' * fill_len +
b'@example> SIZE=1234')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'MAIL from:<' +
b'a' * (fill_len + 26) +
b'@example> SIZE=1234')
self.assertEqual(self.channel.socket.last,
b'500 Error: line too long\r\n')
def test_MAIL_command_rejects_SMTPUTF8_by_default(self):
self.write_line(b'EHLO example')
self.write_line(
b'MAIL from: <naive@example.com> BODY=8BITMIME SMTPUTF8')
self.assertEqual(self.channel.socket.last[0:1], b'5')
def test_data_longer_than_default_data_size_limit(self):
# Hack the default so we don't have to generate so much data.
self.channel.data_size_limit = 1048
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'A' * self.channel.data_size_limit +
b'A\r\n.')
self.assertEqual(self.channel.socket.last,
b'552 Error: Too much mail data\r\n')
def test_MAIL_size_parameter(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL FROM:<eggs@example> SIZE=512')
self.assertEqual(self.channel.socket.last,
b'250 OK\r\n')
def test_MAIL_invalid_size_parameter(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL FROM:<eggs@example> SIZE=invalid')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: MAIL FROM: <address> [SP <mail-parameters>]\r\n')
def test_MAIL_RCPT_unknown_parameters(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL FROM:<eggs@example> ham=green')
self.assertEqual(self.channel.socket.last,
b'555 MAIL FROM parameters not recognized or not implemented\r\n')
self.write_line(b'MAIL FROM:<eggs@example>')
self.write_line(b'RCPT TO:<eggs@example> ham=green')
self.assertEqual(self.channel.socket.last,
b'555 RCPT TO parameters not recognized or not implemented\r\n')
def test_MAIL_size_parameter_larger_than_default_data_size_limit(self):
self.channel.data_size_limit = 1048
self.write_line(b'EHLO example')
self.write_line(b'MAIL FROM:<eggs@example> SIZE=2096')
self.assertEqual(self.channel.socket.last,
b'552 Error: message size exceeds fixed maximum message size\r\n')
def test_need_MAIL(self):
self.write_line(b'HELO example')
self.write_line(b'RCPT to:spam@example')
self.assertEqual(self.channel.socket.last,
b'503 Error: need MAIL command\r\n')
def test_MAIL_syntax_HELO(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from eggs@example')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: MAIL FROM: <address>\r\n')
def test_MAIL_syntax_EHLO(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from eggs@example')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: MAIL FROM: <address> [SP <mail-parameters>]\r\n')
def test_MAIL_missing_address(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from:')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: MAIL FROM: <address>\r\n')
def test_MAIL_chevrons(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from:<eggs@example>')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_MAIL_empty_chevrons(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from:<>')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_MAIL_quoted_localpart(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from: <"Fred Blogs"@example.com>')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com')
def test_MAIL_quoted_localpart_no_angles(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from: "Fred Blogs"@example.com')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com')
def test_MAIL_quoted_localpart_with_size(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from: <"Fred Blogs"@example.com> SIZE=1000')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com')
def test_MAIL_quoted_localpart_with_size_no_angles(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL from: "Fred Blogs"@example.com SIZE=1000')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.channel.mailfrom, '"Fred Blogs"@example.com')
def test_nested_MAIL(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL from:eggs@example')
self.write_line(b'MAIL from:spam@example')
self.assertEqual(self.channel.socket.last,
b'503 Error: nested MAIL command\r\n')
def test_VRFY(self):
self.write_line(b'VRFY eggs@example')
self.assertEqual(self.channel.socket.last,
b'252 Cannot VRFY user, but will accept message and attempt ' + \
b'delivery\r\n')
def test_VRFY_syntax(self):
self.write_line(b'VRFY')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: VRFY <address>\r\n')
def test_EXPN_not_implemented(self):
self.write_line(b'EXPN')
self.assertEqual(self.channel.socket.last,
b'502 EXPN not implemented\r\n')
def test_no_HELO_MAIL(self):
self.write_line(b'MAIL from:<foo@example.com>')
self.assertEqual(self.channel.socket.last,
b'503 Error: send HELO first\r\n')
def test_need_RCPT(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'DATA')
self.assertEqual(self.channel.socket.last,
b'503 Error: need RCPT command\r\n')
def test_RCPT_syntax_HELO(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From: eggs@example')
self.write_line(b'RCPT to eggs@example')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: RCPT TO: <address>\r\n')
def test_RCPT_syntax_EHLO(self):
self.write_line(b'EHLO example')
self.write_line(b'MAIL From: eggs@example')
self.write_line(b'RCPT to eggs@example')
self.assertEqual(self.channel.socket.last,
b'501 Syntax: RCPT TO: <address> [SP <mail-parameters>]\r\n')
def test_RCPT_lowercase_to_OK(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From: eggs@example')
self.write_line(b'RCPT to: <eggs@example>')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_no_HELO_RCPT(self):
self.write_line(b'RCPT to eggs@example')
self.assertEqual(self.channel.socket.last,
b'503 Error: send HELO first\r\n')
def test_data_dialog(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'RCPT To:spam@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'DATA')
self.assertEqual(self.channel.socket.last,
b'354 End data with <CR><LF>.<CR><LF>\r\n')
self.write_line(b'data\r\nmore\r\n.')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.server.messages,
[(('peer-address', 'peer-port'),
'eggs@example',
['spam@example'],
'data\nmore')])
def test_DATA_syntax(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA spam')
self.assertEqual(self.channel.socket.last, b'501 Syntax: DATA\r\n')
def test_no_HELO_DATA(self):
self.write_line(b'DATA spam')
self.assertEqual(self.channel.socket.last,
b'503 Error: send HELO first\r\n')
def test_data_transparency_section_4_5_2(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'..\r\n.\r\n')
self.assertEqual(self.channel.received_data, '.')
def test_multiple_RCPT(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'RCPT To:ham@example')
self.write_line(b'DATA')
self.write_line(b'data\r\n.')
self.assertEqual(self.server.messages,
[(('peer-address', 'peer-port'),
'eggs@example',
['spam@example','ham@example'],
'data')])
def test_manual_status(self):
# checks that the Channel is able to return a custom status message
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'return status\r\n.')
self.assertEqual(self.channel.socket.last, b'250 Okish\r\n')
def test_RSET(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'RSET')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'MAIL From:foo@example')
self.write_line(b'RCPT To:eggs@example')
self.write_line(b'DATA')
self.write_line(b'data\r\n.')
self.assertEqual(self.server.messages,
[(('peer-address', 'peer-port'),
'foo@example',
['eggs@example'],
'data')])
def test_HELO_RSET(self):
self.write_line(b'HELO example')
self.write_line(b'RSET')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_RSET_syntax(self):
self.write_line(b'RSET hi')
self.assertEqual(self.channel.socket.last, b'501 Syntax: RSET\r\n')
def test_unknown_command(self):
self.write_line(b'UNKNOWN_CMD')
self.assertEqual(self.channel.socket.last,
b'500 Error: command "UNKNOWN_CMD" not ' + \
b'recognized\r\n')
def test_attribute_deprecations(self):
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__server
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__server = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__line
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__line = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__state
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__state = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__greeting
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__greeting = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__mailfrom
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__mailfrom = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__rcpttos
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__rcpttos = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__data
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__data = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__fqdn
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__fqdn = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__peer
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__peer = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__conn
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__conn = 'spam'
with support.check_warnings(('', DeprecationWarning)):
spam = self.channel._SMTPChannel__addr
with support.check_warnings(('', DeprecationWarning)):
self.channel._SMTPChannel__addr = 'spam'
def test_decode_data_default_warning(self):
with self.assertWarns(DeprecationWarning):
server = DummyServer((support.HOST, 0), ('b', 0))
conn, addr = self.server.accept()
with self.assertWarns(DeprecationWarning):
smtpd.SMTPChannel(server, conn, addr)
@unittest.skipUnless(support.IPV6_ENABLED, "IPv6 not enabled")
class SMTPDChannelIPv6Test(SMTPDChannelTest):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOSTv6, 0), ('b', 0),
decode_data=True)
conn, addr = self.server.accept()
self.channel = smtpd.SMTPChannel(self.server, conn, addr,
decode_data=True)
class SMTPDChannelWithDataSizeLimitTest(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOST, 0), ('b', 0),
decode_data=True)
conn, addr = self.server.accept()
# Set DATA size limit to 32 bytes for easy testing
self.channel = smtpd.SMTPChannel(self.server, conn, addr, 32,
decode_data=True)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, line):
self.channel.socket.queue_recv(line)
self.channel.handle_read()
def test_data_limit_dialog(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'RCPT To:spam@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'DATA')
self.assertEqual(self.channel.socket.last,
b'354 End data with <CR><LF>.<CR><LF>\r\n')
self.write_line(b'data\r\nmore\r\n.')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.assertEqual(self.server.messages,
[(('peer-address', 'peer-port'),
'eggs@example',
['spam@example'],
'data\nmore')])
def test_data_limit_dialog_too_much_data(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'RCPT To:spam@example')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
self.write_line(b'DATA')
self.assertEqual(self.channel.socket.last,
b'354 End data with <CR><LF>.<CR><LF>\r\n')
self.write_line(b'This message is longer than 32 bytes\r\n.')
self.assertEqual(self.channel.socket.last,
b'552 Error: Too much mail data\r\n')
class SMTPDChannelWithDecodeDataFalse(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOST, 0), ('b', 0),
decode_data=False)
conn, addr = self.server.accept()
# Set decode_data to False
self.channel = smtpd.SMTPChannel(self.server, conn, addr,
decode_data=False)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, line):
self.channel.socket.queue_recv(line)
self.channel.handle_read()
def test_ascii_data(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'plain ascii text')
self.write_line(b'.')
self.assertEqual(self.channel.received_data, b'plain ascii text')
def test_utf8_data(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87')
self.write_line(b'and some plain ascii')
self.write_line(b'.')
self.assertEqual(
self.channel.received_data,
b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87\n'
b'and some plain ascii')
class SMTPDChannelWithDecodeDataTrue(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOST, 0), ('b', 0),
decode_data=True)
conn, addr = self.server.accept()
# Set decode_data to True
self.channel = smtpd.SMTPChannel(self.server, conn, addr,
decode_data=True)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, line):
self.channel.socket.queue_recv(line)
self.channel.handle_read()
def test_ascii_data(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'plain ascii text')
self.write_line(b'.')
self.assertEqual(self.channel.received_data, 'plain ascii text')
def test_utf8_data(self):
self.write_line(b'HELO example')
self.write_line(b'MAIL From:eggs@example')
self.write_line(b'RCPT To:spam@example')
self.write_line(b'DATA')
self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87')
self.write_line(b'and some plain ascii')
self.write_line(b'.')
self.assertEqual(
self.channel.received_data,
'utf8 enriched text: żźć\nand some plain ascii')
class SMTPDChannelTestWithEnableSMTPUTF8True(unittest.TestCase):
def setUp(self):
smtpd.socket = asyncore.socket = mock_socket
self.old_debugstream = smtpd.DEBUGSTREAM
self.debug = smtpd.DEBUGSTREAM = io.StringIO()
self.server = DummyServer((support.HOST, 0), ('b', 0),
enable_SMTPUTF8=True)
conn, addr = self.server.accept()
self.channel = smtpd.SMTPChannel(self.server, conn, addr,
enable_SMTPUTF8=True)
def tearDown(self):
asyncore.close_all()
asyncore.socket = smtpd.socket = socket
smtpd.DEBUGSTREAM = self.old_debugstream
def write_line(self, line):
self.channel.socket.queue_recv(line)
self.channel.handle_read()
def test_MAIL_command_accepts_SMTPUTF8_when_announced(self):
self.write_line(b'EHLO example')
self.write_line(
'MAIL from: <naïve@example.com> BODY=8BITMIME SMTPUTF8'.encode(
'utf-8')
)
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_process_smtputf8_message(self):
self.write_line(b'EHLO example')
for mail_parameters in [b'', b'BODY=8BITMIME SMTPUTF8']:
self.write_line(b'MAIL from: <a@example> ' + mail_parameters)
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line(b'rcpt to:<b@example.com>')
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line(b'data')
self.assertEqual(self.channel.socket.last[0:3], b'354')
self.write_line(b'c\r\n.')
if mail_parameters == b'':
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
else:
self.assertEqual(self.channel.socket.last,
b'250 SMTPUTF8 message okish\r\n')
def test_utf8_data(self):
self.write_line(b'EHLO example')
self.write_line(
'MAIL From: naïve@examplé BODY=8BITMIME SMTPUTF8'.encode('utf-8'))
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line('RCPT To:späm@examplé'.encode('utf-8'))
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line(b'DATA')
self.assertEqual(self.channel.socket.last[0:3], b'354')
self.write_line(b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87')
self.write_line(b'.')
self.assertEqual(
self.channel.received_data,
b'utf8 enriched text: \xc5\xbc\xc5\xba\xc4\x87')
def test_MAIL_command_limit_extended_with_SIZE_and_SMTPUTF8(self):
self.write_line(b'ehlo example')
fill_len = (512 + 26 + 10) - len('mail from:<@example>')
self.write_line(b'MAIL from:<' +
b'a' * (fill_len + 1) +
b'@example>')
self.assertEqual(self.channel.socket.last,
b'500 Error: line too long\r\n')
self.write_line(b'MAIL from:<' +
b'a' * fill_len +
b'@example>')
self.assertEqual(self.channel.socket.last, b'250 OK\r\n')
def test_multiple_emails_with_extended_command_length(self):
self.write_line(b'ehlo example')
fill_len = (512 + 26 + 10) - len('mail from:<@example>')
for char in [b'a', b'b', b'c']:
self.write_line(b'MAIL from:<' + char * fill_len + b'a@example>')
self.assertEqual(self.channel.socket.last[0:3], b'500')
self.write_line(b'MAIL from:<' + char * fill_len + b'@example>')
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line(b'rcpt to:<hans@example.com>')
self.assertEqual(self.channel.socket.last[0:3], b'250')
self.write_line(b'data')
self.assertEqual(self.channel.socket.last[0:3], b'354')
self.write_line(b'test\r\n.')
self.assertEqual(self.channel.socket.last[0:3], b'250')
if __name__ == "__main__":
unittest.main()
|