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
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
|
/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 2009
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
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 "ldb.h"
#include "ldb_module.h"
#include "librpc/ndr/libndr.h"
#include "dsdb/samdb/ldb_modules/util.h"
#include "dsdb/samdb/samdb.h"
#include "util.h"
#include "libcli/security/security.h"
/*
search for attrs on one DN, in the modules below
*/
int dsdb_module_search_dn(struct ldb_module *module,
TALLOC_CTX *mem_ctx,
struct ldb_result **_res,
struct ldb_dn *basedn,
const char * const *attrs,
uint32_t dsdb_flags)
{
int ret;
struct ldb_request *req;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
tmp_ctx = talloc_new(mem_ctx);
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
ret = ldb_build_search_req(&req, ldb_module_get_ctx(module), tmp_ctx,
basedn,
LDB_SCOPE_BASE,
NULL,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->modify(module, req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res->count != 1) {
/* we may be reading a DB that does not have the 'check base on search' option... */
ret = LDB_ERR_NO_SUCH_OBJECT;
ldb_asprintf_errstring(ldb_module_get_ctx(module),
"dsdb_module_search_dn: did not find base dn %s (%d results)",
ldb_dn_get_linearized(basedn), res->count);
} else {
*_res = talloc_steal(mem_ctx, res);
}
talloc_free(tmp_ctx);
return ret;
}
/*
search for attrs in the modules below
*/
int dsdb_module_search(struct ldb_module *module,
TALLOC_CTX *mem_ctx,
struct ldb_result **_res,
struct ldb_dn *basedn, enum ldb_scope scope,
const char * const *attrs,
int dsdb_flags,
const char *format, ...) _PRINTF_ATTRIBUTE(8, 9)
{
int ret;
struct ldb_request *req;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
va_list ap;
char *expression;
tmp_ctx = talloc_new(mem_ctx);
if (format) {
va_start(ap, format);
expression = talloc_vasprintf(tmp_ctx, format, ap);
va_end(ap);
if (!expression) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
} else {
expression = NULL;
}
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
ret = ldb_build_search_req(&req, ldb_module_get_ctx(module), tmp_ctx,
basedn,
scope,
expression,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->search(module, req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(req);
if (ret == LDB_SUCCESS) {
*_res = talloc_steal(mem_ctx, res);
}
talloc_free(tmp_ctx);
return ret;
}
/*
find a DN given a GUID. This searches across all partitions
*/
int dsdb_module_dn_by_guid(struct ldb_module *module, TALLOC_CTX *mem_ctx,
const struct GUID *guid, struct ldb_dn **dn)
{
struct ldb_result *res;
const char *attrs[] = { NULL };
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
int ret;
ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
attrs,
DSDB_FLAG_NEXT_MODULE |
DSDB_SEARCH_SHOW_DELETED |
DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT,
"objectGUID=%s", GUID_string(tmp_ctx, guid));
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res->count == 0) {
talloc_free(tmp_ctx);
return LDB_ERR_NO_SUCH_OBJECT;
}
if (res->count != 1) {
ldb_asprintf_errstring(ldb_module_get_ctx(module), "More than one object found matching objectGUID %s\n",
GUID_string(tmp_ctx, guid));
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
*dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
find a GUID given a DN.
*/
int dsdb_module_guid_by_dn(struct ldb_module *module, struct ldb_dn *dn, struct GUID *guid)
{
const char *attrs[] = { NULL };
struct ldb_result *res;
TALLOC_CTX *tmp_ctx = talloc_new(module);
int ret;
NTSTATUS status;
ret = dsdb_module_search_dn(module, tmp_ctx, &res, dn, attrs,
DSDB_FLAG_NEXT_MODULE |
DSDB_SEARCH_SHOW_DELETED |
DSDB_SEARCH_SHOW_EXTENDED_DN);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb_module_get_ctx(module), "Failed to find GUID for %s",
ldb_dn_get_linearized(dn));
talloc_free(tmp_ctx);
return ret;
}
status = dsdb_get_extended_dn_guid(res->msgs[0]->dn, guid, "GUID");
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return ldb_operr(ldb_module_get_ctx(module));
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
a ldb_modify request operating on modules below the
current module
*/
int dsdb_module_modify(struct ldb_module *module,
const struct ldb_message *message,
uint32_t dsdb_flags)
{
struct ldb_request *mod_req;
int ret;
struct ldb_context *ldb = ldb_module_get_ctx(module);
TALLOC_CTX *tmp_ctx = talloc_new(module);
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
ret = ldb_build_mod_req(&mod_req, ldb, tmp_ctx,
message,
NULL,
res,
ldb_modify_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(mod_req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, mod_req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), mod_req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->modify(module, mod_req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(mod_req->handle, LDB_WAIT_ALL);
}
talloc_free(tmp_ctx);
return ret;
}
/*
a ldb_rename request operating on modules below the
current module
*/
int dsdb_module_rename(struct ldb_module *module,
struct ldb_dn *olddn, struct ldb_dn *newdn,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
struct ldb_context *ldb = ldb_module_get_ctx(module);
TALLOC_CTX *tmp_ctx = talloc_new(module);
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
ret = ldb_build_rename_req(&req, ldb, tmp_ctx,
olddn,
newdn,
NULL,
res,
ldb_modify_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->rename(module, req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(tmp_ctx);
return ret;
}
/*
a ldb_add request operating on modules below the
current module
*/
int dsdb_module_add(struct ldb_module *module,
const struct ldb_message *message,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
struct ldb_context *ldb = ldb_module_get_ctx(module);
TALLOC_CTX *tmp_ctx = talloc_new(module);
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb_module_get_ctx(module));
}
ret = ldb_build_add_req(&req, ldb, tmp_ctx,
message,
NULL,
res,
ldb_modify_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->add(module, req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(tmp_ctx);
return ret;
}
/*
a ldb_delete request operating on modules below the
current module
*/
int dsdb_module_del(struct ldb_module *module,
struct ldb_dn *dn,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
struct ldb_context *ldb = ldb_module_get_ctx(module);
TALLOC_CTX *tmp_ctx = talloc_new(module);
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = ldb_build_del_req(&req, ldb, tmp_ctx,
dn,
NULL,
res,
ldb_modify_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
if (dsdb_flags & DSDB_FLAG_NEXT_MODULE) {
ret = ldb_next_request(module, req);
} else if (dsdb_flags & DSDB_FLAG_TOP_MODULE) {
ret = ldb_request(ldb_module_get_ctx(module), req);
} else {
const struct ldb_module_ops *ops = ldb_module_get_ops(module);
SMB_ASSERT(dsdb_flags & DSDB_FLAG_OWN_MODULE);
ret = ops->del(module, req);
}
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(tmp_ctx);
return ret;
}
const struct dsdb_class * get_last_structural_class(const struct dsdb_schema *schema,const struct ldb_message_element *element)
{
const struct dsdb_class *last_class = NULL;
unsigned int i;
for (i = 0; i < element->num_values; i++){
const struct dsdb_class *tmp_class = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &element->values[i]);
if(tmp_class == NULL) {
continue;
}
if(tmp_class->objectClassCategory > 1) {
continue;
}
if (!last_class) {
last_class = tmp_class;
} else {
if (tmp_class->subClass_order > last_class->subClass_order)
last_class = tmp_class;
}
}
return last_class;
}
/*
check if a single valued link has multiple non-deleted values
This is needed when we will be using the RELAX control to stop
ldb_tdb from checking single valued links
*/
int dsdb_check_single_valued_link(const struct dsdb_attribute *attr,
const struct ldb_message_element *el)
{
bool found_active = false;
unsigned int i;
if (!(attr->ldb_schema_attribute->flags & LDB_ATTR_FLAG_SINGLE_VALUE) ||
el->num_values < 2) {
return LDB_SUCCESS;
}
for (i=0; i<el->num_values; i++) {
if (!dsdb_dn_is_deleted_val(&el->values[i])) {
if (found_active) {
return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
}
found_active = true;
}
}
return LDB_SUCCESS;
}
int dsdb_check_optional_feature(struct ldb_module *module, struct ldb_dn *scope,
struct GUID op_feature_guid, bool *feature_enabled)
{
TALLOC_CTX *tmp_ctx;
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct ldb_result *res;
struct ldb_dn *search_dn;
struct GUID search_guid;
const char *attrs[] = {"msDS-EnabledFeature", NULL};
int ret;
unsigned int i;
struct ldb_message_element *el;
*feature_enabled = false;
tmp_ctx = talloc_new(ldb);
ret = ldb_search(ldb, tmp_ctx, &res,
scope, LDB_SCOPE_BASE, attrs,
NULL);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"Could no find the scope object - dn: %s\n",
ldb_dn_get_linearized(scope));
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
if (res->msgs[0]->num_elements > 0) {
el = ldb_msg_find_element(res->msgs[0],"msDS-EnabledFeature");
attrs[0] = "msDS-OptionalFeatureGUID";
for (i=0; i<el->num_values; i++) {
search_dn = ldb_dn_from_ldb_val(tmp_ctx, ldb, &el->values[i]);
ret = ldb_search(ldb, tmp_ctx, &res,
search_dn, LDB_SCOPE_BASE, attrs,
NULL);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"Could no find object dn: %s\n",
ldb_dn_get_linearized(search_dn));
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
search_guid = samdb_result_guid(res->msgs[0], "msDS-OptionalFeatureGUID");
if (GUID_compare(&search_guid, &op_feature_guid) == 0){
*feature_enabled = true;
break;
}
}
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
find a 'reference' DN that points at another object
(eg. serverReference, rIDManagerReference etc)
*/
int dsdb_module_reference_dn(struct ldb_module *module, TALLOC_CTX *mem_ctx, struct ldb_dn *base,
const char *attribute, struct ldb_dn **dn)
{
const char *attrs[2];
struct ldb_result *res;
int ret;
attrs[0] = attribute;
attrs[1] = NULL;
ret = dsdb_module_search_dn(module, mem_ctx, &res, base, attrs,
DSDB_FLAG_NEXT_MODULE);
if (ret != LDB_SUCCESS) {
return ret;
}
*dn = ldb_msg_find_attr_as_dn(ldb_module_get_ctx(module),
mem_ctx, res->msgs[0], attribute);
if (!*dn) {
talloc_free(res);
return LDB_ERR_NO_SUCH_ATTRIBUTE;
}
talloc_free(res);
return LDB_SUCCESS;
}
/*
find the RID Manager$ DN via the rIDManagerReference attribute in the
base DN
*/
int dsdb_module_rid_manager_dn(struct ldb_module *module, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
{
return dsdb_module_reference_dn(module, mem_ctx,
ldb_get_default_basedn(ldb_module_get_ctx(module)),
"rIDManagerReference", dn);
}
/*
update an integer attribute safely via a constrained delete/add
*/
int dsdb_module_constrainted_update_integer(struct ldb_module *module, struct ldb_dn *dn,
const char *attr, uint64_t old_val, uint64_t new_val)
{
struct ldb_message *msg;
struct ldb_message_element *el;
struct ldb_val v1, v2;
int ret;
char *vstring;
msg = ldb_msg_new(module);
msg->dn = dn;
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_DELETE, &el);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
el->num_values = 1;
el->values = &v1;
vstring = talloc_asprintf(msg, "%llu", (unsigned long long)old_val);
if (!vstring) {
talloc_free(msg);
return ldb_module_oom(module);
}
v1 = data_blob_string_const(vstring);
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_ADD, &el);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
el->num_values = 1;
el->values = &v2;
vstring = talloc_asprintf(msg, "%llu", (unsigned long long)new_val);
if (!vstring) {
talloc_free(msg);
return ldb_module_oom(module);
}
v2 = data_blob_string_const(vstring);
ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
talloc_free(msg);
return ret;
}
/*
used to chain to the callers callback
*/
int dsdb_next_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_request *up_req = talloc_get_type(req->context, struct ldb_request);
talloc_steal(up_req, req);
return up_req->callback(up_req, ares);
}
/*
set an integer attribute
*/
int dsdb_module_set_integer(struct ldb_module *module, struct ldb_dn *dn,
const char *attr, uint64_t new_val)
{
struct ldb_message *msg;
int ret;
msg = ldb_msg_new(module);
msg->dn = dn;
ret = ldb_msg_add_fmt(msg, attr, "%llu", (unsigned long long)new_val);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
msg->elements[0].flags = LDB_FLAG_MOD_REPLACE;
ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
talloc_free(msg);
return ret;
}
/*
load the uSNHighest and the uSNUrgent attributes from the @REPLCHANGED
object for a partition
*/
int dsdb_module_load_partition_usn(struct ldb_module *module, struct ldb_dn *dn,
uint64_t *uSN, uint64_t *urgent_uSN)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct ldb_request *req;
int ret;
TALLOC_CTX *tmp_ctx = talloc_new(module);
struct dsdb_control_current_partition *p_ctrl;
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_module_oom(module);
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
ldb_dn_new(tmp_ctx, ldb, "@REPLCHANGED"),
LDB_SCOPE_BASE,
NULL, NULL,
NULL,
res, ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
p_ctrl = talloc(req, struct dsdb_control_current_partition);
if (p_ctrl == NULL) {
talloc_free(tmp_ctx);
return ldb_module_oom(module);
}
p_ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
p_ctrl->dn = dn;
ret = ldb_request_add_control(req,
DSDB_CONTROL_CURRENT_PARTITION_OID,
false, p_ctrl);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
ret = ldb_next_request(module, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret == LDB_ERR_NO_SUCH_OBJECT || ret == LDB_ERR_INVALID_DN_SYNTAX) {
/* it hasn't been created yet, which means
an implicit value of zero */
*uSN = 0;
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res->count != 1) {
*uSN = 0;
if (urgent_uSN) {
*urgent_uSN = 0;
}
} else {
*uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNHighest", 0);
if (urgent_uSN) {
*urgent_uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNUrgent", 0);
}
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
save uSNHighest and uSNUrgent attributes in the @REPLCHANGED object for a
partition
*/
int dsdb_module_save_partition_usn(struct ldb_module *module, struct ldb_dn *dn,
uint64_t uSN, uint64_t urgent_uSN)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct ldb_request *req;
struct ldb_message *msg;
struct dsdb_control_current_partition *p_ctrl;
int ret;
struct ldb_result *res;
msg = ldb_msg_new(module);
if (msg == NULL) {
return ldb_module_oom(module);
}
msg->dn = ldb_dn_new(msg, ldb, "@REPLCHANGED");
if (msg->dn == NULL) {
talloc_free(msg);
return ldb_operr(ldb_module_get_ctx(module));
}
res = talloc_zero(msg, struct ldb_result);
if (!res) {
talloc_free(msg);
return ldb_module_oom(module);
}
ret = ldb_msg_add_fmt(msg, "uSNHighest", "%llu", (unsigned long long)uSN);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
msg->elements[0].flags = LDB_FLAG_MOD_REPLACE;
/* urgent_uSN is optional so may not be stored */
if (urgent_uSN) {
ret = ldb_msg_add_fmt(msg, "uSNUrgent", "%llu", (unsigned long long)urgent_uSN);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
msg->elements[1].flags = LDB_FLAG_MOD_REPLACE;
}
p_ctrl = talloc(msg, struct dsdb_control_current_partition);
if (p_ctrl == NULL) {
talloc_free(msg);
return ldb_oom(ldb);
}
p_ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
p_ctrl->dn = dn;
ret = ldb_build_mod_req(&req, ldb, msg,
msg,
NULL,
res,
ldb_modify_default_callback,
NULL);
again:
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
ret = ldb_request_add_control(req,
DSDB_CONTROL_CURRENT_PARTITION_OID,
false, p_ctrl);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
/* Run the new request */
ret = ldb_next_request(module, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
ret = ldb_build_add_req(&req, ldb, msg,
msg,
NULL,
res,
ldb_modify_default_callback,
NULL);
goto again;
}
talloc_free(msg);
return ret;
}
bool dsdb_module_am_system(struct ldb_module *module)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct auth_session_info *session_info
= (struct auth_session_info *)ldb_get_opaque(ldb, "sessionInfo");
return security_session_user_level(session_info, NULL) == SECURITY_SYSTEM;
}
/*
check if the recyclebin is enabled
*/
int dsdb_recyclebin_enabled(struct ldb_module *module, bool *enabled)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct ldb_dn *partitions_dn;
struct GUID recyclebin_guid;
int ret;
partitions_dn = samdb_partitions_dn(ldb, module);
GUID_from_string(DS_GUID_FEATURE_RECYCLE_BIN, &recyclebin_guid);
ret = dsdb_check_optional_feature(module, partitions_dn, recyclebin_guid, enabled);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb, "Could not verify if Recycle Bin is enabled \n");
talloc_free(partitions_dn);
return LDB_ERR_UNWILLING_TO_PERFORM;
}
talloc_free(partitions_dn);
return LDB_SUCCESS;
}
bool is_attr_in_list(const char * const * attrs, const char *attr)
{
unsigned int i;
for (i = 0; attrs[i]; i++) {
if (ldb_attr_cmp(attrs[i], attr) == 0)
return true;
}
return false;
}
int dsdb_msg_constrainted_update_int32(struct ldb_module *module,
struct ldb_message *msg,
const char *attr,
const int32_t *old_val,
const int32_t *new_val)
{
struct ldb_message_element *el;
struct ldb_val *v1, *v2;
int ret;
char *vstring;
if (old_val) {
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_DELETE, &el);
if (ret != LDB_SUCCESS) {
return ret;
}
el->num_values = 1;
el->values = talloc_array(msg, struct ldb_val, el->num_values);
if (!el->values) {
return ldb_module_oom(module);
}
vstring = talloc_asprintf(el->values, "%ld", (long)*old_val);
if (!vstring) {
return ldb_module_oom(module);
}
*el->values = data_blob_string_const(vstring);
}
if (new_val) {
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_ADD, &el);
if (ret != LDB_SUCCESS) {
return ret;
}
el->num_values = 1;
el->values = talloc_array(msg, struct ldb_val, el->num_values);
if (!el->values) {
return ldb_module_oom(module);
}
vstring = talloc_asprintf(el->values, "%ld", (long)*new_val);
if (!vstring) {
return ldb_module_oom(module);
}
*el->values = data_blob_string_const(vstring);
}
return LDB_SUCCESS;
}
int dsdb_msg_constrainted_update_uint32(struct ldb_module *module,
struct ldb_message *msg,
const char *attr,
const uint32_t *old_val,
const uint32_t *new_val)
{
return dsdb_msg_constrainted_update_int32(module, msg, attr,
(const int32_t *)old_val,
(const int32_t *)new_val);
}
int dsdb_msg_constrainted_update_int64(struct ldb_module *module,
struct ldb_message *msg,
const char *attr,
const int64_t *old_val,
const int64_t *new_val)
{
struct ldb_message_element *el;
struct ldb_val *v1, *v2;
int ret;
char *vstring;
if (old_val) {
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_DELETE, &el);
if (ret != LDB_SUCCESS) {
return ret;
}
el->num_values = 1;
el->values = talloc_array(msg, struct ldb_val, el->num_values);
if (!el->values) {
return ldb_module_oom(module);
}
vstring = talloc_asprintf(el->values, "%lld", (long long)*old_val);
if (!vstring) {
return ldb_module_oom(module);
}
*el->values = data_blob_string_const(vstring);
}
if (new_val) {
ret = ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_ADD, &el);
if (ret != LDB_SUCCESS) {
return ret;
}
el->num_values = 1;
el->values = talloc_array(msg, struct ldb_val, el->num_values);
if (!el->values) {
return ldb_module_oom(module);
}
vstring = talloc_asprintf(el->values, "%lld", (long long)*new_val);
if (!vstring) {
return ldb_module_oom(module);
}
*el->values = data_blob_string_const(vstring);
}
return LDB_SUCCESS;
}
int dsdb_msg_constrainted_update_uint64(struct ldb_module *module,
struct ldb_message *msg,
const char *attr,
const uint64_t *old_val,
const uint64_t *new_val)
{
return dsdb_msg_constrainted_update_int64(module, msg, attr,
(const int64_t *)old_val,
(const int64_t *)new_val);
}
/*
update an int32 attribute safely via a constrained delete/add
*/
int dsdb_module_constrainted_update_int32(struct ldb_module *module,
struct ldb_dn *dn,
const char *attr,
const int32_t *old_val,
const int32_t *new_val)
{
struct ldb_message *msg;
int ret;
msg = ldb_msg_new(module);
msg->dn = dn;
ret = dsdb_msg_constrainted_update_int32(module,
msg, attr,
old_val,
new_val);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
talloc_free(msg);
return ret;
}
int dsdb_module_constrainted_update_uint32(struct ldb_module *module,
struct ldb_dn *dn,
const char *attr,
const uint32_t *old_val,
const uint32_t *new_val)
{
return dsdb_module_constrainted_update_int32(module, dn, attr,
(const int32_t *)old_val,
(const int32_t *)new_val);
}
/*
update an int64 attribute safely via a constrained delete/add
*/
int dsdb_module_constrainted_update_int64(struct ldb_module *module,
struct ldb_dn *dn,
const char *attr,
const int64_t *old_val,
const int64_t *new_val)
{
struct ldb_message *msg;
int ret;
msg = ldb_msg_new(module);
msg->dn = dn;
ret = dsdb_msg_constrainted_update_int64(module,
msg, attr,
old_val,
new_val);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return ret;
}
ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
talloc_free(msg);
return ret;
}
int dsdb_module_constrainted_update_uint64(struct ldb_module *module,
struct ldb_dn *dn,
const char *attr,
const uint64_t *old_val,
const uint64_t *new_val)
{
return dsdb_module_constrainted_update_int64(module, dn, attr,
(const int64_t *)old_val,
(const int64_t *)new_val);
}
|