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
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
|
/*
Unix SMB/CIFS implementation.
Validate the krb5 pac generation routines
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2015
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; either version 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/kerberos.h"
#include "torture/smbtorture.h"
#include "torture/krb5/proto.h"
#include "auth/credentials/credentials.h"
#include "lib/cmdline/cmdline.h"
#include "source4/auth/kerberos/kerberos.h"
#include "source4/auth/kerberos/kerberos_util.h"
#include "lib/util/util_net.h"
#include "auth/auth.h"
#include "auth/auth_sam_reply.h"
#include "auth/gensec/gensec.h"
#include "param/param.h"
#undef strcasecmp
#define TEST_CANONICALIZE 0x0000001
#define TEST_ENTERPRISE 0x0000002
#define TEST_UPPER_USERNAME 0x0000008
#define TEST_WIN2K 0x0000020
#define TEST_UPN 0x0000040
#define TEST_S4U2SELF 0x0000080
#define TEST_REMOVEDOLLAR 0x0000100
#define TEST_AS_REQ_SPN 0x0000200
#define TEST_ALL 0x00003FF
struct test_data {
const char *test_name;
const char *realm;
const char *real_realm;
const char *real_domain;
const char *username;
const char *real_username;
bool canonicalize;
bool enterprise;
bool upper_username;
bool win2k;
bool upn;
bool other_upn_suffix;
bool s4u2self;
bool removedollar;
bool as_req_spn;
bool spn_is_upn;
const char *krb5_service;
const char *krb5_hostname;
};
struct torture_krb5_context {
struct smb_krb5_context *smb_krb5_context;
struct torture_context *tctx;
struct addrinfo *server;
struct test_data *test_data;
int packet_count;
};
struct pac_data {
const char *principal_name;
};
/*
* A helper function which avoids touching the local databases to
* generate the session info, as we just want to verify the principal
* name that we found in the ticket not the full local token
*/
static NTSTATUS test_generate_session_info_pac(struct auth4_context *auth_ctx,
TALLOC_CTX *mem_ctx,
struct smb_krb5_context *smb_krb5_context,
DATA_BLOB *pac_blob,
const char *principal_name,
const struct tsocket_address *remote_address,
uint32_t session_info_flags,
struct auth_session_info **session_info)
{
NTSTATUS nt_status;
struct auth_user_info_dc *user_info_dc;
TALLOC_CTX *tmp_ctx;
struct pac_data *pac_data;
if (pac_blob == NULL) {
DBG_ERR("pac_blob missing\n");
return NT_STATUS_NO_IMPERSONATION_TOKEN;
}
tmp_ctx = talloc_named(mem_ctx, 0, "gensec_gssapi_session_info context");
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
auth_ctx->private_data = pac_data = talloc_zero(auth_ctx, struct pac_data);
pac_data->principal_name = talloc_strdup(pac_data, principal_name);
if (!pac_data->principal_name) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
nt_status = kerberos_pac_blob_to_user_info_dc(tmp_ctx,
*pac_blob,
smb_krb5_context->krb5_context,
&user_info_dc, NULL, NULL);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
if (user_info_dc->info->authenticated) {
session_info_flags |= AUTH_SESSION_INFO_AUTHENTICATED;
}
session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES;
nt_status = auth_generate_session_info(mem_ctx,
NULL,
NULL,
user_info_dc, session_info_flags,
session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/* Check to see if we can pass the PAC across to the NETLOGON server for validation */
/* Also happens to be a really good one-step verfication of our Kerberos stack */
static bool test_accept_ticket(struct torture_context *tctx,
struct cli_credentials *credentials,
const char *principal,
DATA_BLOB client_to_server)
{
NTSTATUS status;
struct gensec_security *gensec_server_context;
DATA_BLOB server_to_client;
struct auth4_context *auth_context;
struct auth_session_info *session_info;
struct pac_data *pac_data;
TALLOC_CTX *tmp_ctx = talloc_new(tctx);
torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
auth_context = talloc_zero(tmp_ctx, struct auth4_context);
torture_assert(tctx, auth_context != NULL, "talloc_new() failed");
auth_context->generate_session_info_pac = test_generate_session_info_pac;
status = gensec_server_start(tctx,
lpcfg_gensec_settings(tctx, tctx->lp_ctx),
auth_context, &gensec_server_context);
torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
status = gensec_set_credentials(gensec_server_context, credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
status = gensec_start_mech_by_name(gensec_server_context, "krb5");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_name (server) failed");
server_to_client = data_blob(NULL, 0);
/* Do a client-server update dance */
status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
/* Extract the PAC using Samba's code */
status = gensec_session_info(gensec_server_context, gensec_server_context, &session_info);
torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
pac_data = talloc_get_type(auth_context->private_data, struct pac_data);
torture_assert(tctx, pac_data != NULL, "gensec_update failed to fill in pac_data in auth_context");
torture_assert(tctx, pac_data->principal_name != NULL, "principal_name not present");
torture_assert_str_equal(tctx, pac_data->principal_name, principal, "wrong principal name");
return true;
}
/*
* This function is set in torture_krb5_init_context_canon as krb5
* send_and_recv function. This allows us to override what server the
* test is aimed at, and to inspect the packets just before they are
* sent to the network, and before they are processed on the recv
* side.
*
*/
static krb5_error_code test_krb5_send_to_realm_canon_override(struct smb_krb5_context *smb_krb5_context,
void *data, /* struct torture_krb5_context */
krb5_const_realm realm,
time_t timeout,
const krb5_data *send_buf,
krb5_data *recv_buf)
{
krb5_error_code k5ret;
struct torture_krb5_context *test_context
= talloc_get_type_abort(data, struct torture_krb5_context);
SMB_ASSERT(smb_krb5_context == test_context->smb_krb5_context);
k5ret = smb_krb5_send_and_recv_func_forced_tcp(smb_krb5_context,
test_context->server,
timeout,
send_buf,
recv_buf);
if (k5ret != 0) {
return k5ret;
}
test_context->packet_count++;
return k5ret;
}
static int test_context_destructor(struct torture_krb5_context *test_context)
{
freeaddrinfo(test_context->server);
return 0;
}
static bool torture_krb5_init_context_canon(struct torture_context *tctx,
struct test_data *test_data,
struct torture_krb5_context **torture_krb5_context)
{
const char *host = torture_setting_string(tctx, "host", NULL);
krb5_error_code k5ret;
bool ok;
struct torture_krb5_context *test_context = talloc_zero(tctx, struct torture_krb5_context);
torture_assert(tctx, test_context != NULL, "Failed to allocate");
test_context->test_data = test_data;
test_context->tctx = tctx;
k5ret = smb_krb5_init_context(test_context, tctx->lp_ctx, &test_context->smb_krb5_context);
torture_assert_int_equal(tctx, k5ret, 0, "smb_krb5_init_context failed");
ok = interpret_string_addr_internal(&test_context->server, host, AI_NUMERICHOST);
torture_assert(tctx, ok, "Failed to parse target server");
talloc_set_destructor(test_context, test_context_destructor);
set_sockaddr_port(test_context->server->ai_addr, 88);
k5ret = smb_krb5_set_send_to_kdc_func(test_context->smb_krb5_context,
test_krb5_send_to_realm_canon_override,
NULL, /* send_to_kdc */
test_context);
torture_assert_int_equal(tctx, k5ret, 0, "krb5_set_send_to_kdc_func failed");
*torture_krb5_context = test_context;
return true;
}
static bool torture_krb5_as_req_canon(struct torture_context *tctx, const void *tcase_data)
{
krb5_error_code k5ret;
krb5_get_init_creds_opt *krb_options = NULL;
struct test_data *test_data = talloc_get_type_abort(tcase_data, struct test_data);
krb5_principal principal;
krb5_principal krbtgt_other;
krb5_principal expected_principal;
const char *principal_string = NULL;
char *krbtgt_other_string;
int principal_flags;
const char *expected_principal_string = NULL;
char *expected_unparse_principal_string;
int expected_principal_flags;
char *got_principal_string;
char *assertion_message;
const char *password = cli_credentials_get_password(
samba_cmdline_get_creds());
krb5_context k5_context;
struct torture_krb5_context *test_context;
bool ok;
krb5_creds my_creds;
krb5_creds *server_creds;
krb5_ccache ccache;
krb5_auth_context auth_context;
char *cc_name;
krb5_data in_data, enc_ticket;
krb5_get_creds_opt opt;
const char *spn = NULL;
const char *spn_real_realm = NULL;
const char *upn = torture_setting_string(tctx, "krb5-upn", "");
test_data->krb5_service = torture_setting_string(tctx, "krb5-service", "host");
test_data->krb5_hostname = torture_setting_string(tctx, "krb5-hostname", "");
/*
* If we have not passed a UPN on the command line,
* then skip the UPN tests.
*/
if (test_data->upn && upn[0] == '\0') {
torture_skip(tctx, "This test needs a UPN specified as --option=torture:krb5-upn=user@example.com to run");
}
/*
* If we have not passed a SPN on the command line,
* then skip the SPN tests.
*/
if (test_data->as_req_spn && test_data->krb5_hostname[0] == '\0') {
torture_skip(tctx, "This test needs a hostname specified as --option=torture:krb5-hostname=hostname.example.com and optionally --option=torture:krb5-service=service (defaults to host) to run");
}
if (test_data->removedollar &&
!torture_setting_bool(tctx, "run_removedollar_test", false))
{
torture_skip(tctx, "--option=torture:run_removedollar_test=true not specified");
}
test_data->realm = test_data->real_realm;
if (test_data->upn) {
char *p;
test_data->username = talloc_strdup(test_data, upn);
p = strchr(test_data->username, '@');
if (p) {
*p = '\0';
p++;
}
/*
* Test the UPN behaviour carefully. We can
* test in two different modes, depending on
* what UPN has been set up for us.
*
* If the UPN is in our realm, then we do all the tests with this name also.
*
* If the UPN is not in our realm, then we
* expect the tests that replace the realm to
* fail (as it won't match)
*/
if (strcasecmp(p, test_data->real_realm) != 0) {
test_data->other_upn_suffix = true;
} else {
test_data->other_upn_suffix = false;
}
/*
* This lets us test the combination of the UPN prefix
* with a valid domain, without adding even more
* combinations
*/
test_data->realm = p;
}
ok = torture_krb5_init_context_canon(tctx, test_data, &test_context);
torture_assert(tctx, ok, "torture_krb5_init_context failed");
k5_context = test_context->smb_krb5_context->krb5_context;
test_data->realm = strupper_talloc(test_data, test_data->realm);
if (test_data->upper_username) {
test_data->username = strupper_talloc(test_data, test_data->username);
} else {
test_data->username = talloc_strdup(test_data, test_data->username);
}
if (test_data->removedollar) {
char *p;
p = strchr_m(test_data->username, '$');
torture_assert(tctx, p != NULL, talloc_asprintf(tctx,
"username[%s] contains no '$'\n",
test_data->username));
*p = '\0';
}
spn = talloc_asprintf(test_data, "%s/%s@%s",
test_data->krb5_service,
test_data->krb5_hostname,
test_data->realm);
spn_real_realm = talloc_asprintf(test_data, "%s/%s@%s",
test_data->krb5_service,
test_data->krb5_hostname,
test_data->real_realm);
if (!test_data->canonicalize && test_data->enterprise) {
torture_skip(tctx,
"This test combination "
"is skipped intentionally");
}
if (test_data->as_req_spn) {
if (test_data->enterprise) {
torture_skip(tctx,
"This test combination "
"is skipped intentionally");
}
principal_string = spn;
} else {
principal_string = talloc_asprintf(test_data,
"%s@%s",
test_data->username,
test_data->realm);
}
test_data->spn_is_upn
= (strcasecmp(upn, spn) == 0);
/*
* If we are set to canonicalize, we get back the fixed UPPER
* case realm, and the real username (ie matching LDAP
* samAccountName)
*
* Otherwise, if we are set to enterprise, we
* get back the whole principal as-sent
*
* Finally, if we are not set to canonicalize, we get back the
* fixed UPPER case realm, but the as-sent username
*/
if (test_data->as_req_spn && !test_data->spn_is_upn) {
expected_principal_string = spn;
} else if (test_data->canonicalize) {
expected_principal_string = talloc_asprintf(test_data,
"%s@%s",
test_data->real_username,
test_data->real_realm);
} else if (test_data->as_req_spn && test_data->spn_is_upn) {
expected_principal_string = spn_real_realm;
} else {
expected_principal_string = talloc_asprintf(test_data,
"%s@%s",
test_data->username,
test_data->real_realm);
}
if (test_data->enterprise) {
principal_flags = KRB5_PRINCIPAL_PARSE_ENTERPRISE;
} else {
if (test_data->upn && test_data->other_upn_suffix) {
torture_skip(tctx, "UPN test for UPN with other UPN suffix only runs with enterprise principals");
}
principal_flags = 0;
}
if (test_data->canonicalize) {
expected_principal_flags = 0;
} else {
expected_principal_flags = principal_flags;
}
torture_assert_int_equal(tctx,
krb5_parse_name_flags(k5_context,
principal_string,
principal_flags,
&principal),
0, "krb5_parse_name_flags failed");
torture_assert_int_equal(tctx,
krb5_parse_name_flags(k5_context,
expected_principal_string,
expected_principal_flags,
&expected_principal),
0, "krb5_parse_name_flags failed");
if (test_data->as_req_spn) {
if (test_data->upn) {
krb5_principal_set_type(k5_context,
principal,
KRB5_NT_PRINCIPAL);
krb5_principal_set_type(k5_context,
expected_principal,
KRB5_NT_PRINCIPAL);
} else {
krb5_principal_set_type(k5_context,
principal,
KRB5_NT_SRV_HST);
krb5_principal_set_type(k5_context,
expected_principal,
KRB5_NT_SRV_HST);
}
}
torture_assert_int_equal(tctx,
krb5_unparse_name(k5_context,
expected_principal,
&expected_unparse_principal_string),
0, "krb5_unparse_name failed");
/*
* Prepare a AS-REQ and run the TEST_AS_REQ tests
*
*/
test_context->packet_count = 0;
/*
* Set the canonicalize flag if this test requires it
*/
torture_assert_int_equal(tctx,
krb5_get_init_creds_opt_alloc(k5_context, &krb_options),
0, "krb5_get_init_creds_opt_alloc failed");
torture_assert_int_equal(tctx,
krb5_get_init_creds_opt_set_canonicalize(k5_context,
krb_options,
test_data->canonicalize),
0, "krb5_get_init_creds_opt_set_canonicalize failed");
torture_assert_int_equal(tctx,
krb5_get_init_creds_opt_set_win2k(k5_context,
krb_options,
test_data->win2k),
0, "krb5_get_init_creds_opt_set_win2k failed");
k5ret = krb5_get_init_creds_password(k5_context, &my_creds, principal,
password, NULL, NULL, 0,
NULL, krb_options);
if (test_context->test_data->as_req_spn
&& !test_context->test_data->spn_is_upn) {
torture_assert_int_equal(tctx, k5ret,
KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN,
"Got wrong error_code from "
"krb5_get_init_creds_password");
/* We can't proceed with more checks */
return true;
} else {
assertion_message = talloc_asprintf(tctx,
"krb5_get_init_creds_password for %s failed: %s",
principal_string,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
}
torture_assert(tctx,
test_context->packet_count > 1,
"Expected krb5_get_init_creds_password to send more packets");
/*
* Assert that the reply was with the correct type of
* principal, depending on the flags we set
*/
if (test_data->canonicalize == false && test_data->as_req_spn) {
torture_assert_int_equal(tctx,
krb5_principal_get_type(k5_context,
my_creds.client),
KRB5_NT_SRV_HST,
"smb_krb5_init_context gave incorrect client->name.name_type");
} else {
torture_assert_int_equal(tctx,
krb5_principal_get_type(k5_context,
my_creds.client),
KRB5_NT_PRINCIPAL,
"smb_krb5_init_context gave incorrect client->name.name_type");
}
torture_assert_int_equal(tctx,
krb5_unparse_name(k5_context,
my_creds.client, &got_principal_string), 0,
"krb5_unparse_name failed");
assertion_message = talloc_asprintf(tctx,
"krb5_get_init_creds_password returned a different principal %s to what was expected %s",
got_principal_string, expected_principal_string);
krb5_free_unparsed_name(k5_context, got_principal_string);
torture_assert(tctx, krb5_principal_compare(k5_context,
my_creds.client, expected_principal),
assertion_message);
torture_assert_int_equal(tctx,
krb5_principal_get_type(k5_context,
my_creds.server), KRB5_NT_SRV_INST,
"smb_krb5_init_context gave incorrect server->name.name_type");
torture_assert_int_equal(tctx,
krb5_principal_get_num_comp(k5_context,
my_creds.server), 2,
"smb_krb5_init_context gave incorrect number of components in my_creds.server->name");
torture_assert_str_equal(tctx,
krb5_principal_get_comp_string(k5_context,
my_creds.server, 0),
"krbtgt",
"smb_krb5_init_context gave incorrect my_creds.server->name.name_string[0]");
if (test_data->canonicalize) {
torture_assert_str_equal(tctx,
krb5_principal_get_comp_string(k5_context,
my_creds.server, 1),
test_data->real_realm,
"smb_krb5_init_context gave incorrect my_creds.server->name.name_string[1]");
} else {
torture_assert_str_equal(tctx,
krb5_principal_get_comp_string(k5_context,
my_creds.server, 1),
test_data->realm,
"smb_krb5_init_context gave incorrect my_creds.server->name.name_string[1]");
}
torture_assert_str_equal(tctx,
krb5_principal_get_realm(k5_context,
my_creds.server),
test_data->real_realm,
"smb_krb5_init_context gave incorrect my_creds.server->realm");
/* Store the result of the 'kinit' above into a memory ccache */
cc_name = talloc_asprintf(tctx, "MEMORY:%s", test_data->test_name);
torture_assert_int_equal(tctx, krb5_cc_resolve(k5_context, cc_name,
&ccache),
0, "krb5_cc_resolve failed");
torture_assert_int_equal(tctx, krb5_cc_initialize(k5_context,
ccache, my_creds.client),
0, "krb5_cc_initialize failed");
torture_assert_int_equal(tctx, krb5_cc_store_cred(k5_context,
ccache, &my_creds),
0, "krb5_cc_store_cred failed");
/*
* Prepare a TGS-REQ and run the TEST_TGS_REQ_KRBTGT_CANON tests
*
* This tests krb5_get_creds behaviour, which allows us to set
* the KRB5_GC_CANONICALIZE option against the krbtgt/ principal
*/
krbtgt_other_string = talloc_asprintf(test_data, "krbtgt/%s@%s", test_data->real_domain, test_data->real_realm);
torture_assert_int_equal(tctx,
krb5_make_principal(k5_context, &krbtgt_other,
test_data->real_realm, "krbtgt",
test_data->real_domain, NULL),
0, "krb5_make_principal failed");
test_context->packet_count = 0;
torture_assert_int_equal(tctx,
krb5_get_creds_opt_alloc(k5_context, &opt),
0, "krb5_get_creds_opt_alloc");
krb5_get_creds_opt_add_options(k5_context,
opt,
KRB5_GC_CANONICALIZE);
krb5_get_creds_opt_add_options(k5_context,
opt,
KRB5_GC_NO_STORE);
/* Confirm if we can get a ticket krbtgt/realm that we got back with the initial kinit */
k5ret = krb5_get_creds(k5_context, opt, ccache, krbtgt_other, &server_creds);
{
/*
* In these situations, the code above does not store a
* principal in the credentials cache matching what
* krb5_get_creds() needs without talking to the KDC, so the
* test fails with looping detected because when we set
* canonicalize we confuse the client libs.
*
*/
assertion_message = talloc_asprintf(tctx,
"krb5_get_creds for %s should have failed with looping detected: %s",
krbtgt_other_string,
smb_get_krb5_error_message(k5_context, k5ret,
tctx));
torture_assert_int_equal(tctx, k5ret, KRB5_GET_IN_TKT_LOOP, assertion_message);
torture_assert_int_equal(tctx,
test_context->packet_count,
2, "Expected krb5_get_creds to send packets");
}
/*
* Prepare a TGS-REQ and run the TEST_TGS_REQ_CANON tests
*
* This tests krb5_get_creds behaviour, which allows us to set
* the KRB5_GC_CANONICALIZE option
*/
test_context->packet_count = 0;
torture_assert_int_equal(tctx,
krb5_get_creds_opt_alloc(k5_context, &opt),
0, "krb5_get_creds_opt_alloc");
krb5_get_creds_opt_add_options(k5_context,
opt,
KRB5_GC_CANONICALIZE);
krb5_get_creds_opt_add_options(k5_context,
opt,
KRB5_GC_NO_STORE);
if (test_data->s4u2self) {
torture_assert_int_equal(tctx,
krb5_get_creds_opt_set_impersonate(k5_context,
opt,
principal),
0, "krb5_get_creds_opt_set_impersonate failed");
}
/* Confirm if we can get a ticket to our own name */
k5ret = krb5_get_creds(k5_context, opt, ccache, principal, &server_creds);
/*
* In these situations, the code above does not store a
* principal in the credentials cache matching what
* krb5_get_creds() needs, so the test fails.
*
*/
{
assertion_message = talloc_asprintf(tctx,
"krb5_get_creds for %s failed: %s",
principal_string,
smb_get_krb5_error_message(k5_context, k5ret,
tctx));
/*
* Only machine accounts (strictly, accounts with a
* servicePrincipalName) can expect this test to succeed
*/
if (torture_setting_bool(tctx, "expect_machine_account", false)
&& (test_data->enterprise
|| test_data->spn_is_upn
|| test_data->upn == false)) {
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
torture_assert_int_equal(tctx, krb5_cc_store_cred(k5_context,
ccache, server_creds),
0, "krb5_cc_store_cred failed");
torture_assert_int_equal(tctx,
krb5_free_creds(k5_context,
server_creds),
0, "krb5_free_cred_contents failed");
torture_assert_int_equal(tctx,
test_context->packet_count,
1, "Expected krb5_get_creds to send one packet");
} else {
torture_assert_int_equal(tctx, k5ret, KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN,
assertion_message);
/* Account for get_cred_kdc_capath() and get_cred_kdc_referral() fallback */
torture_assert_int_equal(tctx,
test_context->packet_count,
2, "Expected krb5_get_creds to send 2 packets");
}
}
/*
* Confirm gettting a ticket to pass to the server, running
* either the TEST_TGS_REQ or TEST_SELF_TRUST_TGS_REQ stage.
*
* This triggers the client to attempt to get a
* cross-realm ticket between the alternate names of
* the server, and we need to confirm that behaviour.
*
*/
test_context->packet_count = 0;
torture_assert_int_equal(tctx, krb5_auth_con_init(k5_context, &auth_context),
0, "krb5_auth_con_init failed");
in_data.length = 0;
k5ret = krb5_mk_req_exact(k5_context,
&auth_context,
AP_OPTS_USE_SUBKEY,
principal,
&in_data, ccache,
&enc_ticket);
assertion_message = talloc_asprintf(tctx,
"krb5_mk_req_exact for %s failed: %s",
principal_string,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
/*
* Only machine accounts (strictly, accounts with a
* servicePrincipalName) can expect this test to succeed
*/
if (torture_setting_bool(tctx, "expect_machine_account", false)
&& (test_data->enterprise ||
(test_context->test_data->as_req_spn
|| test_context->test_data->spn_is_upn)
|| test_data->upn == false)) {
DATA_BLOB client_to_server;
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
client_to_server = data_blob_const(enc_ticket.data, enc_ticket.length);
/* This is very weird */
if (test_data->canonicalize == false
&& test_context->test_data->as_req_spn
&& test_context->test_data->spn_is_upn
&& test_context->test_data->s4u2self) {
torture_assert(tctx,
test_accept_ticket(tctx,
samba_cmdline_get_creds(),
spn_real_realm,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
} else if (test_data->canonicalize == true
&& test_context->test_data->as_req_spn
&& test_context->test_data->spn_is_upn
&& test_context->test_data->s4u2self) {
torture_assert(tctx,
test_accept_ticket(tctx,
samba_cmdline_get_creds(),
expected_principal_string,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
} else if (test_data->canonicalize == true
&& test_data->enterprise == false
&& test_context->test_data->upn
&& test_context->test_data->spn_is_upn
&& test_context->test_data->s4u2self) {
torture_assert(tctx,
test_accept_ticket(tctx,
samba_cmdline_get_creds(),
expected_principal_string,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
} else if (test_data->canonicalize == false
&& test_context->test_data->upn
&& test_context->test_data->spn_is_upn
&& test_context->test_data->s4u2self) {
const char *accept_expected_principal_string
= talloc_asprintf(test_data,
"%s@%s",
test_data->username,
test_data->real_realm);
torture_assert(tctx,
test_accept_ticket(tctx,
samba_cmdline_get_creds(),
accept_expected_principal_string,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
} else {
torture_assert(tctx,
test_accept_ticket(tctx,
samba_cmdline_get_creds(),
expected_unparse_principal_string,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
}
krb5_data_free(&enc_ticket);
} else {
torture_assert_int_equal(tctx, k5ret, KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN,
assertion_message);
}
/*
* Confirm gettting a ticket to pass to the server, running
* the TEST_TGS_REQ_HOST, TEST_TGS_REQ_HOST_SRV_INST, TEST_TGS_REQ_HOST_SRV_HST stage
*
* This triggers the client to attempt to get a
* cross-realm ticket between the alternate names of
* the server, and we need to confirm that behaviour.
*
*/
if (*test_data->krb5_service && *test_data->krb5_hostname) {
krb5_principal host_principal_srv_inst;
/*
* This tries to guess when the krb5 libs will ask for a
* cross-realm ticket, and when they will just ask the KDC
* directly.
*/
test_context->packet_count = 0;
torture_assert_int_equal(tctx, krb5_auth_con_init(k5_context, &auth_context),
0, "krb5_auth_con_init failed");
in_data.length = 0;
k5ret = krb5_mk_req(k5_context,
&auth_context,
0,
test_data->krb5_service,
test_data->krb5_hostname,
&in_data, ccache,
&enc_ticket);
{
assertion_message = talloc_asprintf(tctx,
"krb5_mk_req for %s/%s failed: %s",
test_data->krb5_service,
test_data->krb5_hostname,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
if (test_data->spn_is_upn == false) {
/*
* Only in these cases would the above
* code have needed to send packets to
* the network
*/
torture_assert(tctx,
test_context->packet_count > 0,
"Expected krb5_get_creds to send packets");
}
}
test_context->packet_count = 0;
torture_assert_int_equal(tctx,
krb5_make_principal(k5_context, &host_principal_srv_inst,
test_data->real_realm,
strupper_talloc(tctx, test_data->krb5_service),
test_data->krb5_hostname,
NULL),
0, "krb5_make_principal failed");
krb5_principal_set_type(k5_context, host_principal_srv_inst, KRB5_NT_SRV_INST);
torture_assert_int_equal(tctx, krb5_auth_con_init(k5_context, &auth_context),
0, "krb5_auth_con_init failed");
in_data.length = 0;
k5ret = krb5_mk_req_exact(k5_context,
&auth_context,
0,
host_principal_srv_inst,
&in_data, ccache,
&enc_ticket);
krb5_free_principal(k5_context, host_principal_srv_inst);
{
assertion_message = talloc_asprintf(tctx,
"krb5_mk_req for %s/%s KRB5_NT_SRV_INST failed: %s",
test_data->krb5_service,
test_data->krb5_hostname,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
/*
* Only in these cases would the above code have needed to
* send packets to the network
*/
torture_assert(tctx,
test_context->packet_count > 0,
"Expected krb5_get_creds to send packets");
}
test_context->packet_count = 0;
torture_assert_int_equal(tctx,
krb5_make_principal(k5_context, &host_principal_srv_inst,
test_data->real_realm,
test_data->krb5_service,
strupper_talloc(tctx, test_data->krb5_hostname),
NULL),
0, "krb5_make_principal failed");
krb5_principal_set_type(k5_context, host_principal_srv_inst, KRB5_NT_SRV_HST);
torture_assert_int_equal(tctx, krb5_auth_con_init(k5_context, &auth_context),
0, "krb5_auth_con_init failed");
in_data.length = 0;
k5ret = krb5_mk_req_exact(k5_context,
&auth_context,
0,
host_principal_srv_inst,
&in_data, ccache,
&enc_ticket);
krb5_free_principal(k5_context, host_principal_srv_inst);
{
assertion_message = talloc_asprintf(tctx,
"krb5_mk_req for %s/%s KRB5_NT_SRV_INST failed: %s",
test_data->krb5_service,
test_data->krb5_hostname,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
/*
* Only in these cases would the above code have needed to
* send packets to the network
*/
torture_assert(tctx,
test_context->packet_count > 0,
"Expected krb5_get_creds to send packets");
}
}
/*
* Confirm gettting a ticket for the same krbtgt/realm that we
* got back with the initial ticket, running the
* TEST_TGS_REQ_KRBTGT stage.
*
*/
test_context->packet_count = 0;
in_data.length = 0;
k5ret = krb5_mk_req_exact(k5_context,
&auth_context,
0,
my_creds.server,
&in_data, ccache,
&enc_ticket);
assertion_message = talloc_asprintf(tctx,
"krb5_mk_req_exact for %s failed: %s",
principal_string,
smb_get_krb5_error_message(k5_context, k5ret, tctx));
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
krb5_free_principal(k5_context, principal);
krb5_get_init_creds_opt_free(k5_context, krb_options);
torture_assert_int_equal(tctx, krb5_free_cred_contents(k5_context, &my_creds),
0, "krb5_free_cred_contents failed");
return true;
}
struct torture_suite *torture_krb5_canon(TALLOC_CTX *mem_ctx)
{
unsigned int i;
struct torture_suite *suite = torture_suite_create(mem_ctx, "canon");
suite->description = talloc_strdup(suite, "Kerberos Canonicalisation tests");
for (i = 0; i < TEST_ALL; i++) {
char *name = talloc_asprintf(suite, "%s.%s.%s.%s.%s.%s",
(i & TEST_CANONICALIZE) ? "canon" : "no-canon",
(i & TEST_ENTERPRISE) ? "enterprise" : "no-enterprise",
(i & TEST_UPPER_USERNAME) ? "uc-user" : "lc-user",
(i & TEST_WIN2K) ? "win2k" : "no-win2k",
(i & TEST_UPN) ? "upn" :
((i & TEST_AS_REQ_SPN) ? "spn" :
((i & TEST_REMOVEDOLLAR) ? "removedollar" : "samaccountname")),
(i & TEST_S4U2SELF) ? "s4u2self" : "normal");
struct torture_suite *sub_suite = torture_suite_create(mem_ctx, name);
struct test_data *test_data = talloc_zero(suite, struct test_data);
if (i & TEST_UPN) {
if (i & TEST_AS_REQ_SPN) {
continue;
}
}
if ((i & TEST_UPN) || (i & TEST_AS_REQ_SPN)) {
if (i & TEST_REMOVEDOLLAR) {
continue;
}
}
test_data->test_name = name;
test_data->real_realm
= strupper_talloc(test_data,
cli_credentials_get_realm(
samba_cmdline_get_creds()));
test_data->real_domain = cli_credentials_get_domain(
samba_cmdline_get_creds());
test_data->username = cli_credentials_get_username(
samba_cmdline_get_creds());
test_data->real_username = cli_credentials_get_username(
samba_cmdline_get_creds());
test_data->canonicalize = (i & TEST_CANONICALIZE) != 0;
test_data->enterprise = (i & TEST_ENTERPRISE) != 0;
test_data->upper_username = (i & TEST_UPPER_USERNAME) != 0;
test_data->win2k = (i & TEST_WIN2K) != 0;
test_data->upn = (i & TEST_UPN) != 0;
test_data->s4u2self = (i & TEST_S4U2SELF) != 0;
test_data->removedollar = (i & TEST_REMOVEDOLLAR) != 0;
test_data->as_req_spn = (i & TEST_AS_REQ_SPN) != 0;
torture_suite_add_simple_tcase_const(sub_suite, name, torture_krb5_as_req_canon,
test_data);
torture_suite_add_suite(suite, sub_suite);
}
return suite;
}
|