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s4:dsdb/common/util.c - fix a counter variable
[Samba/ekacnet.git] / source4 / dsdb / common / util.c
blob9329e61135b993b10f5e628e76288c3b0fb3110a
1 /*
2 Unix SMB/CIFS implementation.
3 Samba utility functions
4
5 Copyright (C) Andrew Tridgell 2004
6 Copyright (C) Volker Lendecke 2004
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
8 Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25 #include "events/events.h"
26 #include "ldb.h"
27 #include "ldb_errors.h"
28 #include "../lib/util/util_ldb.h"
29 #include "../lib/crypto/crypto.h"
30 #include "dsdb/samdb/samdb.h"
31 #include "libcli/security/security.h"
32 #include "librpc/gen_ndr/ndr_security.h"
33 #include "librpc/gen_ndr/ndr_misc.h"
34 #include "../libds/common/flags.h"
35 #include "dsdb/common/proto.h"
36 #include "libcli/ldap/ldap_ndr.h"
37 #include "param/param.h"
38 #include "libcli/auth/libcli_auth.h"
39 #include "librpc/gen_ndr/ndr_drsblobs.h"
40 #include "system/locale.h"
41 #include "lib/util/tsort.h"
42 #include "dsdb/common/util.h"
43 #include "lib/socket/socket.h"
44 #include "dsdb/samdb/ldb_modules/util.h"
45
46 /*
47 search the sam for the specified attributes in a specific domain, filter on
48 objectSid being in domain_sid.
49 */
50 int samdb_search_domain(struct ldb_context *sam_ldb,
51 TALLOC_CTX *mem_ctx,
52 struct ldb_dn *basedn,
53 struct ldb_message ***res,
54 const char * const *attrs,
55 const struct dom_sid *domain_sid,
56 const char *format, ...) _PRINTF_ATTRIBUTE(7,8)
57 {
58 va_list ap;
59 int i, count;
60
61 va_start(ap, format);
62 count = gendb_search_v(sam_ldb, mem_ctx, basedn,
63 res, attrs, format, ap);
64 va_end(ap);
65
66 i=0;
67
68 while (i<count) {
69 struct dom_sid *entry_sid;
70
71 entry_sid = samdb_result_dom_sid(mem_ctx, (*res)[i], "objectSid");
72
73 if ((entry_sid == NULL) ||
74 (!dom_sid_in_domain(domain_sid, entry_sid))) {
75 /* Delete that entry from the result set */
76 (*res)[i] = (*res)[count-1];
77 count -= 1;
78 talloc_free(entry_sid);
79 continue;
80 }
81 talloc_free(entry_sid);
82 i += 1;
83 }
84
85 return count;
86 }
87
88 /*
89 search the sam for a single string attribute in exactly 1 record
90 */
91 const char *samdb_search_string_v(struct ldb_context *sam_ldb,
92 TALLOC_CTX *mem_ctx,
93 struct ldb_dn *basedn,
94 const char *attr_name,
95 const char *format, va_list ap) _PRINTF_ATTRIBUTE(5,0)
96 {
97 int count;
98 const char *attrs[2] = { NULL, NULL };
99 struct ldb_message **res = NULL;
100
101 attrs[0] = attr_name;
102
103 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
104 if (count > 1) {
105 DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
106 attr_name, format, count));
107 }
108 if (count != 1) {
109 talloc_free(res);
110 return NULL;
111 }
112
113 return samdb_result_string(res[0], attr_name, NULL);
114 }
115
116 /*
117 search the sam for a single string attribute in exactly 1 record
118 */
119 const char *samdb_search_string(struct ldb_context *sam_ldb,
120 TALLOC_CTX *mem_ctx,
121 struct ldb_dn *basedn,
122 const char *attr_name,
123 const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
124 {
125 va_list ap;
126 const char *str;
127
128 va_start(ap, format);
129 str = samdb_search_string_v(sam_ldb, mem_ctx, basedn, attr_name, format, ap);
130 va_end(ap);
131
132 return str;
133 }
134
135 struct ldb_dn *samdb_search_dn(struct ldb_context *sam_ldb,
136 TALLOC_CTX *mem_ctx,
137 struct ldb_dn *basedn,
138 const char *format, ...) _PRINTF_ATTRIBUTE(4,5)
139 {
140 va_list ap;
141 struct ldb_dn *ret;
142 struct ldb_message **res = NULL;
143 int count;
144
145 va_start(ap, format);
146 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, NULL, format, ap);
147 va_end(ap);
148
149 if (count != 1) return NULL;
150
151 ret = talloc_steal(mem_ctx, res[0]->dn);
152 talloc_free(res);
153
154 return ret;
155 }
156
157 /*
158 search the sam for a dom_sid attribute in exactly 1 record
159 */
160 struct dom_sid *samdb_search_dom_sid(struct ldb_context *sam_ldb,
161 TALLOC_CTX *mem_ctx,
162 struct ldb_dn *basedn,
163 const char *attr_name,
164 const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
165 {
166 va_list ap;
167 int count;
168 struct ldb_message **res;
169 const char *attrs[2] = { NULL, NULL };
170 struct dom_sid *sid;
171
172 attrs[0] = attr_name;
173
174 va_start(ap, format);
175 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
176 va_end(ap);
177 if (count > 1) {
178 DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
179 attr_name, format, count));
180 }
181 if (count != 1) {
182 talloc_free(res);
183 return NULL;
184 }
185 sid = samdb_result_dom_sid(mem_ctx, res[0], attr_name);
186 talloc_free(res);
187 return sid;
188 }
189
190 /*
191 return the count of the number of records in the sam matching the query
192 */
193 int samdb_search_count(struct ldb_context *sam_ldb,
194 struct ldb_dn *basedn,
195 const char *format, ...) _PRINTF_ATTRIBUTE(3,4)
196 {
197 va_list ap;
198 struct ldb_message **res;
199 const char *attrs[] = { NULL };
200 int ret;
201 TALLOC_CTX *tmp_ctx = talloc_new(sam_ldb);
202
203 va_start(ap, format);
204 ret = gendb_search_v(sam_ldb, tmp_ctx, basedn, &res, attrs, format, ap);
205 va_end(ap);
206 talloc_free(tmp_ctx);
207
208 return ret;
209 }
210
211
212 /*
213 search the sam for a single integer attribute in exactly 1 record
214 */
215 unsigned int samdb_search_uint(struct ldb_context *sam_ldb,
216 TALLOC_CTX *mem_ctx,
217 unsigned int default_value,
218 struct ldb_dn *basedn,
219 const char *attr_name,
220 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
221 {
222 va_list ap;
223 int count;
224 struct ldb_message **res;
225 const char *attrs[2] = { NULL, NULL };
226
227 attrs[0] = attr_name;
228
229 va_start(ap, format);
230 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
231 va_end(ap);
232
233 if (count != 1) {
234 return default_value;
235 }
236
237 return samdb_result_uint(res[0], attr_name, default_value);
238 }
239
240 /*
241 search the sam for a single signed 64 bit integer attribute in exactly 1 record
242 */
243 int64_t samdb_search_int64(struct ldb_context *sam_ldb,
244 TALLOC_CTX *mem_ctx,
245 int64_t default_value,
246 struct ldb_dn *basedn,
247 const char *attr_name,
248 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
249 {
250 va_list ap;
251 int count;
252 struct ldb_message **res;
253 const char *attrs[2] = { NULL, NULL };
254
255 attrs[0] = attr_name;
256
257 va_start(ap, format);
258 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
259 va_end(ap);
260
261 if (count != 1) {
262 return default_value;
263 }
264
265 return samdb_result_int64(res[0], attr_name, default_value);
266 }
267
268 /*
269 search the sam for multipe records each giving a single string attribute
270 return the number of matches, or -1 on error
271 */
272 int samdb_search_string_multiple(struct ldb_context *sam_ldb,
273 TALLOC_CTX *mem_ctx,
274 struct ldb_dn *basedn,
275 const char ***strs,
276 const char *attr_name,
277 const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
278 {
279 va_list ap;
280 int count, i;
281 const char *attrs[2] = { NULL, NULL };
282 struct ldb_message **res = NULL;
283
284 attrs[0] = attr_name;
285
286 va_start(ap, format);
287 count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
288 va_end(ap);
289
290 if (count <= 0) {
291 return count;
292 }
293
294 /* make sure its single valued */
295 for (i=0;i<count;i++) {
296 if (res[i]->num_elements != 1) {
297 DEBUG(1,("samdb: search for %s %s not single valued\n",
298 attr_name, format));
299 talloc_free(res);
300 return -1;
301 }
302 }
303
304 *strs = talloc_array(mem_ctx, const char *, count+1);
305 if (! *strs) {
306 talloc_free(res);
307 return -1;
308 }
309
310 for (i=0;i<count;i++) {
311 (*strs)[i] = samdb_result_string(res[i], attr_name, NULL);
312 }
313 (*strs)[count] = NULL;
314
315 return count;
316 }
317
318 /*
319 pull a uint from a result set.
320 */
321 unsigned int samdb_result_uint(const struct ldb_message *msg, const char *attr, unsigned int default_value)
322 {
323 return ldb_msg_find_attr_as_uint(msg, attr, default_value);
324 }
325
326 /*
327 pull a (signed) int64 from a result set.
328 */
329 int64_t samdb_result_int64(const struct ldb_message *msg, const char *attr, int64_t default_value)
330 {
331 return ldb_msg_find_attr_as_int64(msg, attr, default_value);
332 }
333
334 /*
335 pull a string from a result set.
336 */
337 const char *samdb_result_string(const struct ldb_message *msg, const char *attr,
338 const char *default_value)
339 {
340 return ldb_msg_find_attr_as_string(msg, attr, default_value);
341 }
342
343 struct ldb_dn *samdb_result_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
344 const char *attr, struct ldb_dn *default_value)
345 {
346 struct ldb_dn *ret_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, msg, attr);
347 if (!ret_dn) {
348 return default_value;
349 }
350 return ret_dn;
351 }
352
353 /*
354 pull a rid from a objectSid in a result set.
355 */
356 uint32_t samdb_result_rid_from_sid(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
357 const char *attr, uint32_t default_value)
358 {
359 struct dom_sid *sid;
360 uint32_t rid;
361
362 sid = samdb_result_dom_sid(mem_ctx, msg, attr);
363 if (sid == NULL) {
364 return default_value;
365 }
366 rid = sid->sub_auths[sid->num_auths-1];
367 talloc_free(sid);
368 return rid;
369 }
370
371 /*
372 pull a dom_sid structure from a objectSid in a result set.
373 */
374 struct dom_sid *samdb_result_dom_sid(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
375 const char *attr)
376 {
377 const struct ldb_val *v;
378 struct dom_sid *sid;
379 enum ndr_err_code ndr_err;
380 v = ldb_msg_find_ldb_val(msg, attr);
381 if (v == NULL) {
382 return NULL;
383 }
384 sid = talloc(mem_ctx, struct dom_sid);
385 if (sid == NULL) {
386 return NULL;
387 }
388 ndr_err = ndr_pull_struct_blob(v, sid, sid,
389 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
390 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
391 talloc_free(sid);
392 return NULL;
393 }
394 return sid;
395 }
396
397 /*
398 pull a guid structure from a objectGUID in a result set.
399 */
400 struct GUID samdb_result_guid(const struct ldb_message *msg, const char *attr)
401 {
402 const struct ldb_val *v;
403 struct GUID guid;
404 NTSTATUS status;
405
406 v = ldb_msg_find_ldb_val(msg, attr);
407 if (!v) return GUID_zero();
408
409 status = GUID_from_ndr_blob(v, &guid);
410 if (!NT_STATUS_IS_OK(status)) {
411 return GUID_zero();
412 }
413
414 return guid;
415 }
416
417 /*
418 pull a sid prefix from a objectSid in a result set.
419 this is used to find the domain sid for a user
420 */
421 struct dom_sid *samdb_result_sid_prefix(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
422 const char *attr)
423 {
424 struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, msg, attr);
425 if (!sid || sid->num_auths < 1) return NULL;
426 sid->num_auths--;
427 return sid;
428 }
429
430 /*
431 pull a NTTIME in a result set.
432 */
433 NTTIME samdb_result_nttime(const struct ldb_message *msg, const char *attr,
434 NTTIME default_value)
435 {
436 return ldb_msg_find_attr_as_uint64(msg, attr, default_value);
437 }
438
439 /*
440 * Windows stores 0 for lastLogoff.
441 * But when a MS DC return the lastLogoff (as Logoff Time)
442 * it returns 0x7FFFFFFFFFFFFFFF, not returning this value in this case
443 * cause windows 2008 and newer version to fail for SMB requests
444 */
445 NTTIME samdb_result_last_logoff(const struct ldb_message *msg)
446 {
447 NTTIME ret = ldb_msg_find_attr_as_uint64(msg, "lastLogoff",0);
448
449 if (ret == 0)
450 ret = 0x7FFFFFFFFFFFFFFFULL;
451
452 return ret;
453 }
454
455 /*
456 * Windows uses both 0 and 9223372036854775807 (0x7FFFFFFFFFFFFFFFULL) to
457 * indicate an account doesn't expire.
458 *
459 * When Windows initially creates an account, it sets
460 * accountExpires = 9223372036854775807 (0x7FFFFFFFFFFFFFFF). However,
461 * when changing from an account having a specific expiration date to
462 * that account never expiring, it sets accountExpires = 0.
463 *
464 * Consolidate that logic here to allow clearer logic for account expiry in
465 * the rest of the code.
466 */
467 NTTIME samdb_result_account_expires(const struct ldb_message *msg)
468 {
469 NTTIME ret = ldb_msg_find_attr_as_uint64(msg, "accountExpires",
470 0);
471
472 if (ret == 0)
473 ret = 0x7FFFFFFFFFFFFFFFULL;
474
475 return ret;
476 }
477
478 /*
479 pull a uint64_t from a result set.
480 */
481 uint64_t samdb_result_uint64(const struct ldb_message *msg, const char *attr,
482 uint64_t default_value)
483 {
484 return ldb_msg_find_attr_as_uint64(msg, attr, default_value);
485 }
486
487
488 /*
489 construct the allow_password_change field from the PwdLastSet attribute and the
490 domain password settings
491 */
492 NTTIME samdb_result_allow_password_change(struct ldb_context *sam_ldb,
493 TALLOC_CTX *mem_ctx,
494 struct ldb_dn *domain_dn,
495 struct ldb_message *msg,
496 const char *attr)
497 {
498 uint64_t attr_time = samdb_result_uint64(msg, attr, 0);
499 int64_t minPwdAge;
500
501 if (attr_time == 0) {
502 return 0;
503 }
504
505 minPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "minPwdAge", NULL);
506
507 /* yes, this is a -= not a += as minPwdAge is stored as the negative
508 of the number of 100-nano-seconds */
509 attr_time -= minPwdAge;
510
511 return attr_time;
512 }
513
514 /*
515 construct the force_password_change field from the PwdLastSet
516 attribute, the userAccountControl and the domain password settings
517 */
518 NTTIME samdb_result_force_password_change(struct ldb_context *sam_ldb,
519 TALLOC_CTX *mem_ctx,
520 struct ldb_dn *domain_dn,
521 struct ldb_message *msg)
522 {
523 uint64_t attr_time = samdb_result_uint64(msg, "pwdLastSet", 0);
524 uint32_t userAccountControl = samdb_result_uint64(msg, "userAccountControl", 0);
525 int64_t maxPwdAge;
526
527 /* Machine accounts don't expire, and there is a flag for 'no expiry' */
528 if (!(userAccountControl & UF_NORMAL_ACCOUNT)
529 || (userAccountControl & UF_DONT_EXPIRE_PASSWD)) {
530 return 0x7FFFFFFFFFFFFFFFULL;
531 }
532
533 if (attr_time == 0) {
534 return 0;
535 }
536
537 maxPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "maxPwdAge", NULL);
538 if (maxPwdAge == 0) {
539 return 0x7FFFFFFFFFFFFFFFULL;
540 } else {
541 attr_time -= maxPwdAge;
542 }
543
544 return attr_time;
545 }
546
547 /*
548 pull a samr_Password structutre from a result set.
549 */
550 struct samr_Password *samdb_result_hash(TALLOC_CTX *mem_ctx, const struct ldb_message *msg, const char *attr)
551 {
552 struct samr_Password *hash = NULL;
553 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
554 if (val && (val->length >= sizeof(hash->hash))) {
555 hash = talloc(mem_ctx, struct samr_Password);
556 memcpy(hash->hash, val->data, MIN(val->length, sizeof(hash->hash)));
557 }
558 return hash;
559 }
560
561 /*
562 pull an array of samr_Password structures from a result set.
563 */
564 unsigned int samdb_result_hashes(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
565 const char *attr, struct samr_Password **hashes)
566 {
567 unsigned int count, i;
568 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
569
570 *hashes = NULL;
571 if (!val) {
572 return 0;
573 }
574 count = val->length / 16;
575 if (count == 0) {
576 return 0;
577 }
578
579 *hashes = talloc_array(mem_ctx, struct samr_Password, count);
580 if (! *hashes) {
581 return 0;
582 }
583
584 for (i=0;i<count;i++) {
585 memcpy((*hashes)[i].hash, (i*16)+(char *)val->data, 16);
586 }
587
588 return count;
589 }
590
591 NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, struct ldb_message *msg,
592 struct samr_Password **lm_pwd, struct samr_Password **nt_pwd)
593 {
594 struct samr_Password *lmPwdHash, *ntPwdHash;
595 if (nt_pwd) {
596 unsigned int num_nt;
597 num_nt = samdb_result_hashes(mem_ctx, msg, "unicodePwd", &ntPwdHash);
598 if (num_nt == 0) {
599 *nt_pwd = NULL;
600 } else if (num_nt > 1) {
601 return NT_STATUS_INTERNAL_DB_CORRUPTION;
602 } else {
603 *nt_pwd = &ntPwdHash[0];
604 }
605 }
606 if (lm_pwd) {
607 /* Ensure that if we have turned off LM
608 * authentication, that we never use the LM hash, even
609 * if we store it */
610 if (lp_lanman_auth(lp_ctx)) {
611 unsigned int num_lm;
612 num_lm = samdb_result_hashes(mem_ctx, msg, "dBCSPwd", &lmPwdHash);
613 if (num_lm == 0) {
614 *lm_pwd = NULL;
615 } else if (num_lm > 1) {
616 return NT_STATUS_INTERNAL_DB_CORRUPTION;
617 } else {
618 *lm_pwd = &lmPwdHash[0];
619 }
620 } else {
621 *lm_pwd = NULL;
622 }
623 }
624 return NT_STATUS_OK;
625 }
626
627 /*
628 pull a samr_LogonHours structutre from a result set.
629 */
630 struct samr_LogonHours samdb_result_logon_hours(TALLOC_CTX *mem_ctx, struct ldb_message *msg, const char *attr)
631 {
632 struct samr_LogonHours hours;
633 size_t units_per_week = 168;
634 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
635
636 ZERO_STRUCT(hours);
637
638 if (val) {
639 units_per_week = val->length * 8;
640 }
641
642 hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week/8);
643 if (!hours.bits) {
644 return hours;
645 }
646 hours.units_per_week = units_per_week;
647 memset(hours.bits, 0xFF, units_per_week/8);
648 if (val) {
649 memcpy(hours.bits, val->data, val->length);
650 }
651
652 return hours;
653 }
654
655 /*
656 pull a set of account_flags from a result set.
657
658 This requires that the attributes:
659 pwdLastSet
660 userAccountControl
661 be included in 'msg'
662 */
663 uint32_t samdb_result_acct_flags(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
664 struct ldb_message *msg, struct ldb_dn *domain_dn)
665 {
666 uint32_t userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
667 uint32_t acct_flags = ds_uf2acb(userAccountControl);
668 NTTIME must_change_time;
669 NTTIME now;
670
671 must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
672 domain_dn, msg);
673
674 /* Test account expire time */
675 unix_to_nt_time(&now, time(NULL));
676 /* check for expired password */
677 if (must_change_time < now) {
678 acct_flags |= ACB_PW_EXPIRED;
679 }
680 return acct_flags;
681 }
682
683 struct lsa_BinaryString samdb_result_parameters(TALLOC_CTX *mem_ctx,
684 struct ldb_message *msg,
685 const char *attr)
686 {
687 struct lsa_BinaryString s;
688 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
689
690 ZERO_STRUCT(s);
691
692 if (!val) {
693 return s;
694 }
695
696 s.array = talloc_array(mem_ctx, uint16_t, val->length/2);
697 if (!s.array) {
698 return s;
699 }
700 s.length = s.size = val->length;
701 memcpy(s.array, val->data, val->length);
702
703 return s;
704 }
705
706 /* Find an attribute, with a particular value */
707
708 /* The current callers of this function expect a very specific
709 * behaviour: In particular, objectClass subclass equivilance is not
710 * wanted. This means that we should not lookup the schema for the
711 * comparison function */
712 struct ldb_message_element *samdb_find_attribute(struct ldb_context *ldb,
713 const struct ldb_message *msg,
714 const char *name, const char *value)
715 {
716 unsigned int i;
717 struct ldb_message_element *el = ldb_msg_find_element(msg, name);
718
719 if (!el) {
720 return NULL;
721 }
722
723 for (i=0;i<el->num_values;i++) {
724 if (ldb_attr_cmp(value, (char *)el->values[i].data) == 0) {
725 return el;
726 }
727 }
728
729 return NULL;
730 }
731
732 /*
733 * This is intended for use by the "password hash" module since there
734 * password changes can be specified through one message element with the
735 * new password (to set) and another one with the old password (to unset).
736 *
737 * The first which sets a password (new value) can have flags
738 * (LDB_FLAG_MOD_ADD, LDB_FLAG_MOD_REPLACE) but also none (on "add" operations
739 * for entries). The latter (old value) has always specified
740 * LDB_FLAG_MOD_DELETE.
741 *
742 * Returns LDB_ERR_NO_SUCH_ATTRIBUTE if the attribute which should be deleted
743 * doesn't contain only one value (this is the Windows Server behaviour)
744 * otherwise LDB_SUCCESS.
745 */
746 int samdb_msg_find_old_and_new_ldb_val(const struct ldb_message *msg,
747 const char *name,
748 const struct ldb_val **new_val,
749 const struct ldb_val **old_val)
750 {
751 unsigned int i;
752
753 *new_val = NULL;
754 *old_val = NULL;
755
756 if (msg == NULL) {
757 return LDB_SUCCESS;
758 }
759
760 for (i = 0; i < msg->num_elements; i++) {
761 if (ldb_attr_cmp(msg->elements[i].name, name) == 0) {
762 if (msg->elements[i].flags == LDB_FLAG_MOD_DELETE) {
763 *old_val = &msg->elements[i].values[0];
764 } else {
765 *new_val = &msg->elements[i].values[0];
766 }
767 }
768 }
769
770 return LDB_SUCCESS;
771 }
772
773 int samdb_find_or_add_value(struct ldb_context *ldb, struct ldb_message *msg, const char *name, const char *set_value)
774 {
775 if (samdb_find_attribute(ldb, msg, name, set_value) == NULL) {
776 return samdb_msg_add_string(ldb, msg, msg, name, set_value);
777 }
778 return LDB_SUCCESS;
779 }
780
781 int samdb_find_or_add_attribute(struct ldb_context *ldb, struct ldb_message *msg, const char *name, const char *set_value)
782 {
783 struct ldb_message_element *el;
784
785 el = ldb_msg_find_element(msg, name);
786 if (el) {
787 return LDB_SUCCESS;
788 }
789
790 return samdb_msg_add_string(ldb, msg, msg, name, set_value);
791 }
792
793
794
795 /*
796 add a string element to a message
797 */
798 int samdb_msg_add_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
799 const char *attr_name, const char *str)
800 {
801 char *s = talloc_strdup(mem_ctx, str);
802 char *a = talloc_strdup(mem_ctx, attr_name);
803 if (s == NULL || a == NULL) {
804 return LDB_ERR_OPERATIONS_ERROR;
805 }
806 return ldb_msg_add_string(msg, a, s);
807 }
808
809 /*
810 add a dom_sid element to a message
811 */
812 int samdb_msg_add_dom_sid(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
813 const char *attr_name, struct dom_sid *sid)
814 {
815 struct ldb_val v;
816 enum ndr_err_code ndr_err;
817
818 ndr_err = ndr_push_struct_blob(&v, mem_ctx,
819 sid,
820 (ndr_push_flags_fn_t)ndr_push_dom_sid);
821 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
822 return LDB_ERR_OPERATIONS_ERROR;
823 }
824 return ldb_msg_add_value(msg, attr_name, &v, NULL);
825 }
826
827
828 /*
829 add a delete element operation to a message
830 */
831 int samdb_msg_add_delete(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
832 const char *attr_name)
833 {
834 /* we use an empty replace rather than a delete, as it allows for
835 dsdb_replace() to be used everywhere */
836 return ldb_msg_add_empty(msg, attr_name, LDB_FLAG_MOD_REPLACE, NULL);
837 }
838
839 /*
840 add a add attribute value to a message
841 */
842 int samdb_msg_add_addval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
843 const char *attr_name, const char *value)
844 {
845 struct ldb_message_element *el;
846 char *a, *v;
847 int ret;
848 a = talloc_strdup(mem_ctx, attr_name);
849 if (a == NULL)
850 return LDB_ERR_OPERATIONS_ERROR;
851 v = talloc_strdup(mem_ctx, value);
852 if (v == NULL)
853 return LDB_ERR_OPERATIONS_ERROR;
854 ret = ldb_msg_add_string(msg, a, v);
855 if (ret != 0)
856 return ret;
857 el = ldb_msg_find_element(msg, a);
858 if (el == NULL)
859 return LDB_ERR_OPERATIONS_ERROR;
860 el->flags = LDB_FLAG_MOD_ADD;
861 return LDB_SUCCESS;
862 }
863
864 /*
865 add a delete attribute value to a message
866 */
867 int samdb_msg_add_delval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
868 const char *attr_name, const char *value)
869 {
870 struct ldb_message_element *el;
871 char *a, *v;
872 int ret;
873 a = talloc_strdup(mem_ctx, attr_name);
874 if (a == NULL)
875 return LDB_ERR_OPERATIONS_ERROR;
876 v = talloc_strdup(mem_ctx, value);
877 if (v == NULL)
878 return LDB_ERR_OPERATIONS_ERROR;
879 ret = ldb_msg_add_string(msg, a, v);
880 if (ret != 0)
881 return ret;
882 el = ldb_msg_find_element(msg, a);
883 if (el == NULL)
884 return LDB_ERR_OPERATIONS_ERROR;
885 el->flags = LDB_FLAG_MOD_DELETE;
886 return LDB_SUCCESS;
887 }
888
889 /*
890 add a int element to a message
891 */
892 int samdb_msg_add_int(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
893 const char *attr_name, int v)
894 {
895 const char *s = talloc_asprintf(mem_ctx, "%d", v);
896 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
897 }
898
899 /*
900 add a unsigned int element to a message
901 */
902 int samdb_msg_add_uint(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
903 const char *attr_name, unsigned int v)
904 {
905 return samdb_msg_add_int(sam_ldb, mem_ctx, msg, attr_name, (int)v);
906 }
907
908 /*
909 add a (signed) int64_t element to a message
910 */
911 int samdb_msg_add_int64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
912 const char *attr_name, int64_t v)
913 {
914 const char *s = talloc_asprintf(mem_ctx, "%lld", (long long)v);
915 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
916 }
917
918 /*
919 add a uint64_t element to a message
920 */
921 int samdb_msg_add_uint64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
922 const char *attr_name, uint64_t v)
923 {
924 return samdb_msg_add_int64(sam_ldb, mem_ctx, msg, attr_name, (int64_t)v);
925 }
926
927 /*
928 add a samr_Password element to a message
929 */
930 int samdb_msg_add_hash(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
931 const char *attr_name, struct samr_Password *hash)
932 {
933 struct ldb_val val;
934 val.data = talloc_memdup(mem_ctx, hash->hash, 16);
935 if (!val.data) {
936 return LDB_ERR_OPERATIONS_ERROR;
937 }
938 val.length = 16;
939 return ldb_msg_add_value(msg, attr_name, &val, NULL);
940 }
941
942 /*
943 add a samr_Password array to a message
944 */
945 int samdb_msg_add_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
946 const char *attr_name, struct samr_Password *hashes,
947 unsigned int count)
948 {
949 struct ldb_val val;
950 unsigned int i;
951 val.data = talloc_array_size(mem_ctx, 16, count);
952 val.length = count*16;
953 if (!val.data) {
954 return LDB_ERR_OPERATIONS_ERROR;
955 }
956 for (i=0;i<count;i++) {
957 memcpy(i*16 + (char *)val.data, hashes[i].hash, 16);
958 }
959 return ldb_msg_add_value(msg, attr_name, &val, NULL);
960 }
961
962 /*
963 add a acct_flags element to a message
964 */
965 int samdb_msg_add_acct_flags(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
966 const char *attr_name, uint32_t v)
967 {
968 return samdb_msg_add_uint(sam_ldb, mem_ctx, msg, attr_name, ds_acb2uf(v));
969 }
970
971 /*
972 add a logon_hours element to a message
973 */
974 int samdb_msg_add_logon_hours(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
975 const char *attr_name, struct samr_LogonHours *hours)
976 {
977 struct ldb_val val;
978 val.length = hours->units_per_week / 8;
979 val.data = hours->bits;
980 return ldb_msg_add_value(msg, attr_name, &val, NULL);
981 }
982
983 /*
984 add a parameters element to a message
985 */
986 int samdb_msg_add_parameters(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
987 const char *attr_name, struct lsa_BinaryString *parameters)
988 {
989 struct ldb_val val;
990 val.length = parameters->length;
991 val.data = (uint8_t *)parameters->array;
992 return ldb_msg_add_value(msg, attr_name, &val, NULL);
993 }
994 /*
995 add a general value element to a message
996 */
997 int samdb_msg_add_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
998 const char *attr_name, const struct ldb_val *val)
999 {
1000 return ldb_msg_add_value(msg, attr_name, val, NULL);
1001 }
1002
1003 /*
1004 sets a general value element to a message
1005 */
1006 int samdb_msg_set_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
1007 const char *attr_name, const struct ldb_val *val)
1008 {
1009 struct ldb_message_element *el;
1010
1011 el = ldb_msg_find_element(msg, attr_name);
1012 if (el) {
1013 el->num_values = 0;
1014 }
1015 return ldb_msg_add_value(msg, attr_name, val, NULL);
1016 }
1017
1018 /*
1019 set a string element in a message
1020 */
1021 int samdb_msg_set_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
1022 const char *attr_name, const char *str)
1023 {
1024 struct ldb_message_element *el;
1025
1026 el = ldb_msg_find_element(msg, attr_name);
1027 if (el) {
1028 el->num_values = 0;
1029 }
1030 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, str);
1031 }
1032
1033 /*
1034 * Handle ldb_request in transaction
1035 */
1036 static int dsdb_autotransaction_request(struct ldb_context *sam_ldb,
1037 struct ldb_request *req)
1038 {
1039 int ret;
1040
1041 ret = ldb_transaction_start(sam_ldb);
1042 if (ret != LDB_SUCCESS) {
1043 return ret;
1044 }
1045
1046 ret = ldb_request(sam_ldb, req);
1047 if (ret == LDB_SUCCESS) {
1048 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
1049 }
1050
1051 if (ret == LDB_SUCCESS) {
1052 return ldb_transaction_commit(sam_ldb);
1053 }
1054 ldb_transaction_cancel(sam_ldb);
1055
1056 return ret;
1057 }
1058
1059 /*
1060 return a default security descriptor
1061 */
1062 struct security_descriptor *samdb_default_security_descriptor(TALLOC_CTX *mem_ctx)
1063 {
1064 struct security_descriptor *sd;
1065
1066 sd = security_descriptor_initialise(mem_ctx);
1067
1068 return sd;
1069 }
1070
1071 struct ldb_dn *samdb_aggregate_schema_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1072 {
1073 struct ldb_dn *schema_dn = ldb_get_schema_basedn(sam_ctx);
1074 struct ldb_dn *aggregate_dn;
1075 if (!schema_dn) {
1076 return NULL;
1077 }
1078
1079 aggregate_dn = ldb_dn_copy(mem_ctx, schema_dn);
1080 if (!aggregate_dn) {
1081 return NULL;
1082 }
1083 if (!ldb_dn_add_child_fmt(aggregate_dn, "CN=Aggregate")) {
1084 return NULL;
1085 }
1086 return aggregate_dn;
1087 }
1088
1089 struct ldb_dn *samdb_partitions_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1090 {
1091 struct ldb_dn *new_dn;
1092
1093 new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
1094 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Partitions")) {
1095 talloc_free(new_dn);
1096 return NULL;
1097 }
1098 return new_dn;
1099 }
1100
1101 struct ldb_dn *samdb_infrastructure_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1102 {
1103 struct ldb_dn *new_dn;
1104
1105 new_dn = ldb_dn_copy(mem_ctx, ldb_get_default_basedn(sam_ctx));
1106 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Infrastructure")) {
1107 talloc_free(new_dn);
1108 return NULL;
1109 }
1110 return new_dn;
1111 }
1112
1113 struct ldb_dn *samdb_sites_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1114 {
1115 struct ldb_dn *new_dn;
1116
1117 new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
1118 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Sites")) {
1119 talloc_free(new_dn);
1120 return NULL;
1121 }
1122 return new_dn;
1123 }
1124
1125 /*
1126 work out the domain sid for the current open ldb
1127 */
1128 const struct dom_sid *samdb_domain_sid(struct ldb_context *ldb)
1129 {
1130 TALLOC_CTX *tmp_ctx;
1131 const struct dom_sid *domain_sid;
1132 const char *attrs[] = {
1133 "objectSid",
1134 NULL
1135 };
1136 struct ldb_result *res;
1137 int ret;
1138
1139 /* see if we have a cached copy */
1140 domain_sid = (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
1141 if (domain_sid) {
1142 return domain_sid;
1143 }
1144
1145 tmp_ctx = talloc_new(ldb);
1146 if (tmp_ctx == NULL) {
1147 goto failed;
1148 }
1149
1150 ret = ldb_search(ldb, tmp_ctx, &res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, attrs, "objectSid=*");
1151
1152 if (ret != LDB_SUCCESS) {
1153 goto failed;
1154 }
1155
1156 if (res->count != 1) {
1157 goto failed;
1158 }
1159
1160 domain_sid = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSid");
1161 if (domain_sid == NULL) {
1162 goto failed;
1163 }
1164
1165 /* cache the domain_sid in the ldb */
1166 if (ldb_set_opaque(ldb, "cache.domain_sid", discard_const_p(struct dom_sid, domain_sid)) != LDB_SUCCESS) {
1167 goto failed;
1168 }
1169
1170 talloc_steal(ldb, domain_sid);
1171 talloc_free(tmp_ctx);
1172
1173 return domain_sid;
1174
1175 failed:
1176 talloc_free(tmp_ctx);
1177 return NULL;
1178 }
1179
1180 /*
1181 get domain sid from cache
1182 */
1183 const struct dom_sid *samdb_domain_sid_cache_only(struct ldb_context *ldb)
1184 {
1185 return (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
1186 }
1187
1188 bool samdb_set_domain_sid(struct ldb_context *ldb, const struct dom_sid *dom_sid_in)
1189 {
1190 TALLOC_CTX *tmp_ctx;
1191 struct dom_sid *dom_sid_new;
1192 struct dom_sid *dom_sid_old;
1193
1194 /* see if we have a cached copy */
1195 dom_sid_old = talloc_get_type(ldb_get_opaque(ldb,
1196 "cache.domain_sid"), struct dom_sid);
1197
1198 tmp_ctx = talloc_new(ldb);
1199 if (tmp_ctx == NULL) {
1200 goto failed;
1201 }
1202
1203 dom_sid_new = dom_sid_dup(tmp_ctx, dom_sid_in);
1204 if (!dom_sid_new) {
1205 goto failed;
1206 }
1207
1208 /* cache the domain_sid in the ldb */
1209 if (ldb_set_opaque(ldb, "cache.domain_sid", dom_sid_new) != LDB_SUCCESS) {
1210 goto failed;
1211 }
1212
1213 talloc_steal(ldb, dom_sid_new);
1214 talloc_free(tmp_ctx);
1215 talloc_free(dom_sid_old);
1216
1217 return true;
1218
1219 failed:
1220 DEBUG(1,("Failed to set our own cached domain SID in the ldb!\n"));
1221 talloc_free(tmp_ctx);
1222 return false;
1223 }
1224
1225 bool samdb_set_ntds_settings_dn(struct ldb_context *ldb, struct ldb_dn *ntds_settings_dn_in)
1226 {
1227 TALLOC_CTX *tmp_ctx;
1228 struct ldb_dn *ntds_settings_dn_new;
1229 struct ldb_dn *ntds_settings_dn_old;
1230
1231 /* see if we have a cached copy */
1232 ntds_settings_dn_old = talloc_get_type(ldb_get_opaque(ldb,
1233 "cache.ntds_settings_dn"), struct ldb_dn);
1234
1235 tmp_ctx = talloc_new(ldb);
1236 if (tmp_ctx == NULL) {
1237 goto failed;
1238 }
1239
1240 ntds_settings_dn_new = ldb_dn_copy(tmp_ctx, ntds_settings_dn_in);
1241 if (!ntds_settings_dn_new) {
1242 goto failed;
1243 }
1244
1245 /* cache the domain_sid in the ldb */
1246 if (ldb_set_opaque(ldb, "cache.ntds_settings_dn", ntds_settings_dn_new) != LDB_SUCCESS) {
1247 goto failed;
1248 }
1249
1250 talloc_steal(ldb, ntds_settings_dn_new);
1251 talloc_free(tmp_ctx);
1252 talloc_free(ntds_settings_dn_old);
1253
1254 return true;
1255
1256 failed:
1257 DEBUG(1,("Failed to set our NTDS Settings DN in the ldb!\n"));
1258 talloc_free(tmp_ctx);
1259 return false;
1260 }
1261
1262 /* Obtain the short name of the flexible single master operator
1263 * (FSMO), such as the PDC Emulator */
1264 const char *samdb_result_fsmo_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
1265 const char *attr)
1266 {
1267 /* Format is cn=NTDS Settings,cn=<NETBIOS name of FSMO>,.... */
1268 struct ldb_dn *fsmo_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, msg, attr);
1269 const struct ldb_val *val = ldb_dn_get_component_val(fsmo_dn, 1);
1270 const char *name = ldb_dn_get_component_name(fsmo_dn, 1);
1271
1272 if (!name || (ldb_attr_cmp(name, "cn") != 0)) {
1273 /* Ensure this matches the format. This gives us a
1274 * bit more confidence that a 'cn' value will be a
1275 * ascii string */
1276 return NULL;
1277 }
1278 if (val) {
1279 return (char *)val->data;
1280 }
1281 return NULL;
1282 }
1283
1284 /*
1285 work out the ntds settings dn for the current open ldb
1286 */
1287 struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb)
1288 {
1289 TALLOC_CTX *tmp_ctx;
1290 const char *root_attrs[] = { "dsServiceName", NULL };
1291 int ret;
1292 struct ldb_result *root_res;
1293 struct ldb_dn *settings_dn;
1294
1295 /* see if we have a cached copy */
1296 settings_dn = (struct ldb_dn *)ldb_get_opaque(ldb, "cache.ntds_settings_dn");
1297 if (settings_dn) {
1298 return settings_dn;
1299 }
1300
1301 tmp_ctx = talloc_new(ldb);
1302 if (tmp_ctx == NULL) {
1303 goto failed;
1304 }
1305
1306 ret = ldb_search(ldb, tmp_ctx, &root_res, ldb_dn_new(tmp_ctx, ldb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
1307 if (ret) {
1308 DEBUG(1,("Searching for dsServiceName in rootDSE failed: %s\n",
1309 ldb_errstring(ldb)));
1310 goto failed;
1311 }
1312
1313 if (root_res->count != 1) {
1314 goto failed;
1315 }
1316
1317 settings_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, root_res->msgs[0], "dsServiceName");
1318
1319 /* cache the domain_sid in the ldb */
1320 if (ldb_set_opaque(ldb, "cache.settings_dn", settings_dn) != LDB_SUCCESS) {
1321 goto failed;
1322 }
1323
1324 talloc_steal(ldb, settings_dn);
1325 talloc_free(tmp_ctx);
1326
1327 return settings_dn;
1328
1329 failed:
1330 DEBUG(1,("Failed to find our own NTDS Settings DN in the ldb!\n"));
1331 talloc_free(tmp_ctx);
1332 return NULL;
1333 }
1334
1335 /*
1336 work out the ntds settings invocationId for the current open ldb
1337 */
1338 const struct GUID *samdb_ntds_invocation_id(struct ldb_context *ldb)
1339 {
1340 TALLOC_CTX *tmp_ctx;
1341 const char *attrs[] = { "invocationId", NULL };
1342 int ret;
1343 struct ldb_result *res;
1344 struct GUID *invocation_id;
1345
1346 /* see if we have a cached copy */
1347 invocation_id = (struct GUID *)ldb_get_opaque(ldb, "cache.invocation_id");
1348 if (invocation_id) {
1349 return invocation_id;
1350 }
1351
1352 tmp_ctx = talloc_new(ldb);
1353 if (tmp_ctx == NULL) {
1354 goto failed;
1355 }
1356
1357 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1358 if (ret) {
1359 goto failed;
1360 }
1361
1362 if (res->count != 1) {
1363 goto failed;
1364 }
1365
1366 invocation_id = talloc(tmp_ctx, struct GUID);
1367 if (!invocation_id) {
1368 goto failed;
1369 }
1370
1371 *invocation_id = samdb_result_guid(res->msgs[0], "invocationId");
1372
1373 /* cache the domain_sid in the ldb */
1374 if (ldb_set_opaque(ldb, "cache.invocation_id", invocation_id) != LDB_SUCCESS) {
1375 goto failed;
1376 }
1377
1378 talloc_steal(ldb, invocation_id);
1379 talloc_free(tmp_ctx);
1380
1381 return invocation_id;
1382
1383 failed:
1384 DEBUG(1,("Failed to find our own NTDS Settings invocationId in the ldb!\n"));
1385 talloc_free(tmp_ctx);
1386 return NULL;
1387 }
1388
1389 bool samdb_set_ntds_invocation_id(struct ldb_context *ldb, const struct GUID *invocation_id_in)
1390 {
1391 TALLOC_CTX *tmp_ctx;
1392 struct GUID *invocation_id_new;
1393 struct GUID *invocation_id_old;
1394
1395 /* see if we have a cached copy */
1396 invocation_id_old = (struct GUID *)ldb_get_opaque(ldb,
1397 "cache.invocation_id");
1398
1399 tmp_ctx = talloc_new(ldb);
1400 if (tmp_ctx == NULL) {
1401 goto failed;
1402 }
1403
1404 invocation_id_new = talloc(tmp_ctx, struct GUID);
1405 if (!invocation_id_new) {
1406 goto failed;
1407 }
1408
1409 *invocation_id_new = *invocation_id_in;
1410
1411 /* cache the domain_sid in the ldb */
1412 if (ldb_set_opaque(ldb, "cache.invocation_id", invocation_id_new) != LDB_SUCCESS) {
1413 goto failed;
1414 }
1415
1416 talloc_steal(ldb, invocation_id_new);
1417 talloc_free(tmp_ctx);
1418 talloc_free(invocation_id_old);
1419
1420 return true;
1421
1422 failed:
1423 DEBUG(1,("Failed to set our own cached invocationId in the ldb!\n"));
1424 talloc_free(tmp_ctx);
1425 return false;
1426 }
1427
1428 /*
1429 work out the ntds settings objectGUID for the current open ldb
1430 */
1431 const struct GUID *samdb_ntds_objectGUID(struct ldb_context *ldb)
1432 {
1433 TALLOC_CTX *tmp_ctx;
1434 const char *attrs[] = { "objectGUID", NULL };
1435 int ret;
1436 struct ldb_result *res;
1437 struct GUID *ntds_guid;
1438
1439 /* see if we have a cached copy */
1440 ntds_guid = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
1441 if (ntds_guid) {
1442 return ntds_guid;
1443 }
1444
1445 tmp_ctx = talloc_new(ldb);
1446 if (tmp_ctx == NULL) {
1447 goto failed;
1448 }
1449
1450 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1451 if (ret) {
1452 goto failed;
1453 }
1454
1455 if (res->count != 1) {
1456 goto failed;
1457 }
1458
1459 ntds_guid = talloc(tmp_ctx, struct GUID);
1460 if (!ntds_guid) {
1461 goto failed;
1462 }
1463
1464 *ntds_guid = samdb_result_guid(res->msgs[0], "objectGUID");
1465
1466 /* cache the domain_sid in the ldb */
1467 if (ldb_set_opaque(ldb, "cache.ntds_guid", ntds_guid) != LDB_SUCCESS) {
1468 goto failed;
1469 }
1470
1471 talloc_steal(ldb, ntds_guid);
1472 talloc_free(tmp_ctx);
1473
1474 return ntds_guid;
1475
1476 failed:
1477 DEBUG(1,("Failed to find our own NTDS Settings objectGUID in the ldb!\n"));
1478 talloc_free(tmp_ctx);
1479 return NULL;
1480 }
1481
1482 bool samdb_set_ntds_objectGUID(struct ldb_context *ldb, const struct GUID *ntds_guid_in)
1483 {
1484 TALLOC_CTX *tmp_ctx;
1485 struct GUID *ntds_guid_new;
1486 struct GUID *ntds_guid_old;
1487
1488 /* see if we have a cached copy */
1489 ntds_guid_old = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
1490
1491 tmp_ctx = talloc_new(ldb);
1492 if (tmp_ctx == NULL) {
1493 goto failed;
1494 }
1495
1496 ntds_guid_new = talloc(tmp_ctx, struct GUID);
1497 if (!ntds_guid_new) {
1498 goto failed;
1499 }
1500
1501 *ntds_guid_new = *ntds_guid_in;
1502
1503 /* cache the domain_sid in the ldb */
1504 if (ldb_set_opaque(ldb, "cache.ntds_guid", ntds_guid_new) != LDB_SUCCESS) {
1505 goto failed;
1506 }
1507
1508 talloc_steal(ldb, ntds_guid_new);
1509 talloc_free(tmp_ctx);
1510 talloc_free(ntds_guid_old);
1511
1512 return true;
1513
1514 failed:
1515 DEBUG(1,("Failed to set our own cached invocationId in the ldb!\n"));
1516 talloc_free(tmp_ctx);
1517 return false;
1518 }
1519
1520 /*
1521 work out the server dn for the current open ldb
1522 */
1523 struct ldb_dn *samdb_server_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1524 {
1525 return ldb_dn_get_parent(mem_ctx, samdb_ntds_settings_dn(ldb));
1526 }
1527
1528 /*
1529 work out the server dn for the current open ldb
1530 */
1531 struct ldb_dn *samdb_server_site_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1532 {
1533 struct ldb_dn *server_dn;
1534 struct ldb_dn *servers_dn;
1535 struct ldb_dn *server_site_dn;
1536
1537 /* TODO: there must be a saner way to do this!! */
1538 server_dn = samdb_server_dn(ldb, mem_ctx);
1539 if (!server_dn) return NULL;
1540
1541 servers_dn = ldb_dn_get_parent(mem_ctx, server_dn);
1542 talloc_free(server_dn);
1543 if (!servers_dn) return NULL;
1544
1545 server_site_dn = ldb_dn_get_parent(mem_ctx, servers_dn);
1546 talloc_free(servers_dn);
1547
1548 return server_site_dn;
1549 }
1550
1551 /*
1552 find a 'reference' DN that points at another object
1553 (eg. serverReference, rIDManagerReference etc)
1554 */
1555 int samdb_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *base,
1556 const char *attribute, struct ldb_dn **dn)
1557 {
1558 const char *attrs[2];
1559 struct ldb_result *res;
1560 int ret;
1561
1562 attrs[0] = attribute;
1563 attrs[1] = NULL;
1564
1565 ret = ldb_search(ldb, mem_ctx, &res, base, LDB_SCOPE_BASE, attrs, NULL);
1566 if (ret != LDB_SUCCESS) {
1567 return ret;
1568 }
1569 if (res->count != 1) {
1570 talloc_free(res);
1571 return LDB_ERR_NO_SUCH_OBJECT;
1572 }
1573
1574 *dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, res->msgs[0], attribute);
1575 if (!*dn) {
1576 talloc_free(res);
1577 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1578 }
1579
1580 talloc_free(res);
1581 return LDB_SUCCESS;
1582 }
1583
1584 /*
1585 find our machine account via the serverReference attribute in the
1586 server DN
1587 */
1588 int samdb_server_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1589 {
1590 struct ldb_dn *server_dn;
1591 int ret;
1592
1593 server_dn = samdb_server_dn(ldb, mem_ctx);
1594 if (server_dn == NULL) {
1595 return LDB_ERR_NO_SUCH_OBJECT;
1596 }
1597
1598 ret = samdb_reference_dn(ldb, mem_ctx, server_dn, "serverReference", dn);
1599 talloc_free(server_dn);
1600
1601 return ret;
1602 }
1603
1604 /*
1605 find the RID Manager$ DN via the rIDManagerReference attribute in the
1606 base DN
1607 */
1608 int samdb_rid_manager_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1609 {
1610 return samdb_reference_dn(ldb, mem_ctx, ldb_get_default_basedn(ldb),
1611 "rIDManagerReference", dn);
1612 }
1613
1614 /*
1615 find the RID Set DN via the rIDSetReferences attribute in our
1616 machine account DN
1617 */
1618 int samdb_rid_set_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1619 {
1620 struct ldb_dn *server_ref_dn;
1621 int ret;
1622
1623 ret = samdb_server_reference_dn(ldb, mem_ctx, &server_ref_dn);
1624 if (ret != LDB_SUCCESS) {
1625 return ret;
1626 }
1627 ret = samdb_reference_dn(ldb, mem_ctx, server_ref_dn, "rIDSetReferences", dn);
1628 talloc_free(server_ref_dn);
1629 return ret;
1630 }
1631
1632 const char *samdb_server_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1633 {
1634 const struct ldb_val *val = ldb_dn_get_rdn_val(samdb_server_site_dn(ldb,
1635 mem_ctx));
1636
1637 if (val == NULL) {
1638 return NULL;
1639 }
1640
1641 return (const char *) val->data;
1642 }
1643
1644 /*
1645 * Finds the client site by using the client's IP address.
1646 * The "subnet_name" returns the name of the subnet if parameter != NULL
1647 */
1648 const char *samdb_client_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1649 const char *ip_address, char **subnet_name)
1650 {
1651 const char *attrs[] = { "cn", "siteObject", NULL };
1652 struct ldb_dn *sites_container_dn, *subnets_dn, *sites_dn;
1653 struct ldb_result *res;
1654 const struct ldb_val *val;
1655 const char *site_name = NULL, *l_subnet_name = NULL;
1656 const char *allow_list[2] = { NULL, NULL };
1657 unsigned int i, count;
1658 int cnt, ret;
1659
1660 /*
1661 * if we don't have a client ip e.g. ncalrpc
1662 * the server site is the client site
1663 */
1664 if (ip_address == NULL) {
1665 return samdb_server_site_name(ldb, mem_ctx);
1666 }
1667
1668 sites_container_dn = samdb_sites_dn(ldb, mem_ctx);
1669 if (sites_container_dn == NULL) {
1670 return NULL;
1671 }
1672
1673 subnets_dn = ldb_dn_copy(mem_ctx, sites_container_dn);
1674 if ( ! ldb_dn_add_child_fmt(subnets_dn, "CN=Subnets")) {
1675 talloc_free(sites_container_dn);
1676 talloc_free(subnets_dn);
1677 return NULL;
1678 }
1679
1680 ret = ldb_search(ldb, mem_ctx, &res, subnets_dn, LDB_SCOPE_ONELEVEL,
1681 attrs, NULL);
1682 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
1683 count = 0;
1684 } else if (ret != LDB_SUCCESS) {
1685 talloc_free(sites_container_dn);
1686 talloc_free(subnets_dn);
1687 return NULL;
1688 } else {
1689 count = res->count;
1690 }
1691
1692 for (i = 0; i < count; i++) {
1693 l_subnet_name = ldb_msg_find_attr_as_string(res->msgs[i], "cn",
1694 NULL);
1695
1696 allow_list[0] = l_subnet_name;
1697
1698 if (allow_access(mem_ctx, NULL, allow_list, "", ip_address)) {
1699 sites_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx,
1700 res->msgs[i],
1701 "siteObject");
1702 if (sites_dn == NULL) {
1703 /* No reference, maybe another subnet matches */
1704 continue;
1705 }
1706
1707 /* "val" cannot be NULL here since "sites_dn" != NULL */
1708 val = ldb_dn_get_rdn_val(sites_dn);
1709 site_name = talloc_strdup(mem_ctx,
1710 (const char *) val->data);
1711
1712 talloc_free(sites_dn);
1713
1714 break;
1715 }
1716 }
1717
1718 if (site_name == NULL) {
1719 /* This is the Windows Server fallback rule: when no subnet
1720 * exists and we have only one site available then use it (it
1721 * is for sure the same as our server site). If more sites do
1722 * exist then we don't know which one to use and set the site
1723 * name to "". */
1724 cnt = samdb_search_count(ldb, sites_container_dn,
1725 "(objectClass=site)");
1726 if (cnt == 1) {
1727 site_name = samdb_server_site_name(ldb, mem_ctx);
1728 } else {
1729 site_name = talloc_strdup(mem_ctx, "");
1730 }
1731 l_subnet_name = NULL;
1732 }
1733
1734 if (subnet_name != NULL) {
1735 *subnet_name = talloc_strdup(mem_ctx, l_subnet_name);
1736 }
1737
1738 talloc_free(sites_container_dn);
1739 talloc_free(subnets_dn);
1740 talloc_free(res);
1741
1742 return site_name;
1743 }
1744
1745 /*
1746 work out if we are the PDC for the domain of the current open ldb
1747 */
1748 bool samdb_is_pdc(struct ldb_context *ldb)
1749 {
1750 const char *dom_attrs[] = { "fSMORoleOwner", NULL };
1751 int ret;
1752 struct ldb_result *dom_res;
1753 TALLOC_CTX *tmp_ctx;
1754 bool is_pdc;
1755 struct ldb_dn *pdc;
1756
1757 tmp_ctx = talloc_new(ldb);
1758 if (tmp_ctx == NULL) {
1759 DEBUG(1, ("talloc_new failed in samdb_is_pdc"));
1760 return false;
1761 }
1762
1763 ret = ldb_search(ldb, tmp_ctx, &dom_res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, dom_attrs, NULL);
1764 if (ret) {
1765 DEBUG(1,("Searching for fSMORoleOwner in %s failed: %s\n",
1766 ldb_dn_get_linearized(ldb_get_default_basedn(ldb)),
1767 ldb_errstring(ldb)));
1768 goto failed;
1769 }
1770 if (dom_res->count != 1) {
1771 goto failed;
1772 }
1773
1774 pdc = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, dom_res->msgs[0], "fSMORoleOwner");
1775
1776 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), pdc) == 0) {
1777 is_pdc = true;
1778 } else {
1779 is_pdc = false;
1780 }
1781
1782 talloc_free(tmp_ctx);
1783
1784 return is_pdc;
1785
1786 failed:
1787 DEBUG(1,("Failed to find if we are the PDC for this ldb\n"));
1788 talloc_free(tmp_ctx);
1789 return false;
1790 }
1791
1792 /*
1793 work out if we are a Global Catalog server for the domain of the current open ldb
1794 */
1795 bool samdb_is_gc(struct ldb_context *ldb)
1796 {
1797 const char *attrs[] = { "options", NULL };
1798 int ret, options;
1799 struct ldb_result *res;
1800 TALLOC_CTX *tmp_ctx;
1801
1802 tmp_ctx = talloc_new(ldb);
1803 if (tmp_ctx == NULL) {
1804 DEBUG(1, ("talloc_new failed in samdb_is_pdc"));
1805 return false;
1806 }
1807
1808 /* Query cn=ntds settings,.... */
1809 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1810 if (ret) {
1811 talloc_free(tmp_ctx);
1812 return false;
1813 }
1814 if (res->count != 1) {
1815 talloc_free(tmp_ctx);
1816 return false;
1817 }
1818
1819 options = ldb_msg_find_attr_as_int(res->msgs[0], "options", 0);
1820 talloc_free(tmp_ctx);
1821
1822 /* if options attribute has the 0x00000001 flag set, then enable the global catlog */
1823 if (options & 0x000000001) {
1824 return true;
1825 }
1826 return false;
1827 }
1828
1829 /* Find a domain object in the parents of a particular DN. */
1830 int samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
1831 struct ldb_dn **parent_dn, const char **errstring)
1832 {
1833 TALLOC_CTX *local_ctx;
1834 struct ldb_dn *sdn = dn;
1835 struct ldb_result *res = NULL;
1836 int ret = 0;
1837 const char *attrs[] = { NULL };
1838
1839 local_ctx = talloc_new(mem_ctx);
1840 if (local_ctx == NULL) return LDB_ERR_OPERATIONS_ERROR;
1841
1842 while ((sdn = ldb_dn_get_parent(local_ctx, sdn))) {
1843 ret = ldb_search(ldb, local_ctx, &res, sdn, LDB_SCOPE_BASE, attrs,
1844 "(|(objectClass=domain)(objectClass=builtinDomain))");
1845 if (ret == LDB_SUCCESS) {
1846 if (res->count == 1) {
1847 break;
1848 }
1849 } else {
1850 break;
1851 }
1852 }
1853
1854 if (ret != LDB_SUCCESS) {
1855 *errstring = talloc_asprintf(mem_ctx, "Error searching for parent domain of %s, failed searching for %s: %s",
1856 ldb_dn_get_linearized(dn),
1857 ldb_dn_get_linearized(sdn),
1858 ldb_errstring(ldb));
1859 talloc_free(local_ctx);
1860 return ret;
1861 }
1862 if (res->count != 1) {
1863 *errstring = talloc_asprintf(mem_ctx, "Invalid dn (%s), not child of a domain object",
1864 ldb_dn_get_linearized(dn));
1865 DEBUG(0,(__location__ ": %s\n", *errstring));
1866 talloc_free(local_ctx);
1867 return LDB_ERR_CONSTRAINT_VIOLATION;
1868 }
1869
1870 *parent_dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
1871 talloc_free(local_ctx);
1872 return ret;
1873 }
1874
1875
1876 /*
1877 * Performs checks on a user password (plaintext UNIX format - attribute
1878 * "password"). The remaining parameters have to be extracted from the domain
1879 * object in the AD.
1880 *
1881 * Result codes from "enum samr_ValidationStatus" (consider "samr.idl")
1882 */
1883 enum samr_ValidationStatus samdb_check_password(const DATA_BLOB *password,
1884 const uint32_t pwdProperties,
1885 const uint32_t minPwdLength)
1886 {
1887 /* checks if the "minPwdLength" property is satisfied */
1888 if (minPwdLength > password->length)
1889 return SAMR_VALIDATION_STATUS_PWD_TOO_SHORT;
1890
1891 /* checks the password complexity */
1892 if (((pwdProperties & DOMAIN_PASSWORD_COMPLEX) != 0)
1893 && (password->data != NULL)
1894 && (!check_password_quality((const char *) password->data)))
1895 return SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH;
1896
1897 return SAMR_VALIDATION_STATUS_SUCCESS;
1898 }
1899
1900 /*
1901 * Callback for "samdb_set_password" password change
1902 */
1903 int samdb_set_password_callback(struct ldb_request *req, struct ldb_reply *ares)
1904 {
1905 int ret;
1906
1907 if (!ares) {
1908 return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
1909 }
1910
1911 if (ares->error != LDB_SUCCESS) {
1912 ret = ares->error;
1913 req->context = talloc_steal(req,
1914 ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
1915 talloc_free(ares);
1916 return ldb_request_done(req, ret);
1917 }
1918
1919 if (ares->type != LDB_REPLY_DONE) {
1920 talloc_free(ares);
1921 return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
1922 }
1923
1924 req->context = talloc_steal(req,
1925 ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
1926 talloc_free(ares);
1927 return ldb_request_done(req, LDB_SUCCESS);
1928 }
1929
1930 /*
1931 * Sets the user password using plaintext UTF16 (attribute "new_password") or
1932 * LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
1933 * as parameter if it's a user change or not ("userChange"). The "rejectReason"
1934 * gives some more informations if the changed failed.
1935 *
1936 * Results: NT_STATUS_OK, NT_STATUS_INTERNAL_DB_CORRUPTION,
1937 * NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
1938 * NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION
1939 */
1940 NTSTATUS samdb_set_password(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1941 struct ldb_dn *user_dn, struct ldb_dn *domain_dn,
1942 const DATA_BLOB *new_password,
1943 struct samr_Password *lmNewHash,
1944 struct samr_Password *ntNewHash,
1945 bool user_change,
1946 enum samPwdChangeReason *reject_reason,
1947 struct samr_DomInfo1 **_dominfo)
1948 {
1949 struct ldb_message *msg;
1950 struct ldb_message_element *el;
1951 struct ldb_request *req;
1952 struct dsdb_control_password_change_status *pwd_stat = NULL;
1953 int ret;
1954 NTSTATUS status;
1955
1956 #define CHECK_RET(x) \
1957 if (x != LDB_SUCCESS) { \
1958 talloc_free(msg); \
1959 return NT_STATUS_NO_MEMORY; \
1960 }
1961
1962 msg = ldb_msg_new(mem_ctx);
1963 if (msg == NULL) {
1964 return NT_STATUS_NO_MEMORY;
1965 }
1966 msg->dn = user_dn;
1967 if ((new_password != NULL)
1968 && ((lmNewHash == NULL) && (ntNewHash == NULL))) {
1969 /* we have the password as plaintext UTF16 */
1970 CHECK_RET(samdb_msg_add_value(ldb, mem_ctx, msg,
1971 "clearTextPassword", new_password));
1972 el = ldb_msg_find_element(msg, "clearTextPassword");
1973 el->flags = LDB_FLAG_MOD_REPLACE;
1974 } else if ((new_password == NULL)
1975 && ((lmNewHash != NULL) || (ntNewHash != NULL))) {
1976 /* we have a password as LM and/or NT hash */
1977 if (lmNewHash != NULL) {
1978 CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
1979 "dBCSPwd", lmNewHash));
1980 el = ldb_msg_find_element(msg, "dBCSPwd");
1981 el->flags = LDB_FLAG_MOD_REPLACE;
1982 }
1983 if (ntNewHash != NULL) {
1984 CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
1985 "unicodePwd", ntNewHash));
1986 el = ldb_msg_find_element(msg, "unicodePwd");
1987 el->flags = LDB_FLAG_MOD_REPLACE;
1988 }
1989 } else {
1990 /* the password wasn't specified correctly */
1991 talloc_free(msg);
1992 return NT_STATUS_INVALID_PARAMETER;
1993 }
1994
1995 /* build modify request */
1996 ret = ldb_build_mod_req(&req, ldb, mem_ctx, msg, NULL, NULL,
1997 samdb_set_password_callback, NULL);
1998 if (ret != LDB_SUCCESS) {
1999 talloc_free(msg);
2000 return NT_STATUS_NO_MEMORY;
2001 }
2002
2003 if (user_change) {
2004 /* a user password change and we've checked already the old
2005 * password somewhere else (callers responsability) */
2006 ret = ldb_request_add_control(req,
2007 DSDB_CONTROL_PASSWORD_CHANGE_OLD_PW_CHECKED_OID,
2008 true, NULL);
2009 if (ret != LDB_SUCCESS) {
2010 talloc_free(req);
2011 talloc_free(msg);
2012 return NT_STATUS_NO_MEMORY;
2013 }
2014 }
2015 ret = ldb_request_add_control(req,
2016 DSDB_CONTROL_PASSWORD_HASH_VALUES_OID,
2017 true, NULL);
2018 if (ret != LDB_SUCCESS) {
2019 talloc_free(req);
2020 talloc_free(msg);
2021 return NT_STATUS_NO_MEMORY;
2022 }
2023 ret = ldb_request_add_control(req,
2024 DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID,
2025 true, NULL);
2026 if (ret != LDB_SUCCESS) {
2027 talloc_free(req);
2028 talloc_free(msg);
2029 return NT_STATUS_NO_MEMORY;
2030 }
2031
2032 ret = dsdb_autotransaction_request(ldb, req);
2033
2034 if (req->context != NULL) {
2035 pwd_stat = talloc_steal(mem_ctx,
2036 ((struct ldb_control *)req->context)->data);
2037 }
2038
2039 talloc_free(req);
2040 talloc_free(msg);
2041
2042 /* Sets the domain info (if requested) */
2043 if (_dominfo != NULL) {
2044 struct samr_DomInfo1 *dominfo;
2045
2046 dominfo = talloc_zero(mem_ctx, struct samr_DomInfo1);
2047 if (dominfo == NULL) {
2048 return NT_STATUS_NO_MEMORY;
2049 }
2050
2051 if (pwd_stat != NULL) {
2052 dominfo->min_password_length = pwd_stat->domain_data.minPwdLength;
2053 dominfo->password_properties = pwd_stat->domain_data.pwdProperties;
2054 dominfo->password_history_length = pwd_stat->domain_data.pwdHistoryLength;
2055 dominfo->max_password_age = pwd_stat->domain_data.maxPwdAge;
2056 dominfo->min_password_age = pwd_stat->domain_data.minPwdAge;
2057 }
2058
2059 *_dominfo = dominfo;
2060 }
2061
2062 if (reject_reason != NULL) {
2063 if (pwd_stat != NULL) {
2064 *reject_reason = pwd_stat->reject_reason;
2065 } else {
2066 *reject_reason = SAM_PWD_CHANGE_NO_ERROR;
2067 }
2068 }
2069
2070 if (pwd_stat != NULL) {
2071 talloc_free(pwd_stat);
2072 }
2073
2074 /* TODO: Error results taken from "password_hash" module. Are they
2075 correct? */
2076 if (ret == LDB_ERR_UNWILLING_TO_PERFORM) {
2077 status = NT_STATUS_WRONG_PASSWORD;
2078 } else if (ret == LDB_ERR_CONSTRAINT_VIOLATION) {
2079 status = NT_STATUS_PASSWORD_RESTRICTION;
2080 } else if (ret != LDB_SUCCESS) {
2081 status = NT_STATUS_UNSUCCESSFUL;
2082 } else {
2083 status = NT_STATUS_OK;
2084 }
2085
2086 return status;
2087 }
2088
2089 /*
2090 * Sets the user password using plaintext UTF16 (attribute "new_password") or
2091 * LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
2092 * as parameter if it's a user change or not ("userChange"). The "rejectReason"
2093 * gives some more informations if the changed failed.
2094 *
2095 * This wrapper function for "samdb_set_password" takes a SID as input rather
2096 * than a user DN.
2097 *
2098 * This call encapsulates a new LDB transaction for changing the password;
2099 * therefore the user hasn't to start a new one.
2100 *
2101 * Results: NT_STATUS_OK, NT_STATUS_INTERNAL_DB_CORRUPTION,
2102 * NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
2103 * NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION
2104 */
2105 NTSTATUS samdb_set_password_sid(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
2106 const struct dom_sid *user_sid,
2107 const DATA_BLOB *new_password,
2108 struct samr_Password *lmNewHash,
2109 struct samr_Password *ntNewHash,
2110 bool user_change,
2111 enum samPwdChangeReason *reject_reason,
2112 struct samr_DomInfo1 **_dominfo)
2113 {
2114 NTSTATUS nt_status;
2115 struct ldb_dn *user_dn;
2116 int ret;
2117
2118 ret = ldb_transaction_start(ldb);
2119 if (ret != LDB_SUCCESS) {
2120 DEBUG(1, ("Failed to start transaction: %s\n", ldb_errstring(ldb)));
2121 return NT_STATUS_TRANSACTION_ABORTED;
2122 }
2123
2124 user_dn = samdb_search_dn(ldb, mem_ctx, NULL,
2125 "(&(objectSid=%s)(objectClass=user))",
2126 ldap_encode_ndr_dom_sid(mem_ctx, user_sid));
2127 if (!user_dn) {
2128 ldb_transaction_cancel(ldb);
2129 DEBUG(3, ("samdb_set_password_sid: SID %s not found in samdb, returning NO_SUCH_USER\n",
2130 dom_sid_string(mem_ctx, user_sid)));
2131 return NT_STATUS_NO_SUCH_USER;
2132 }
2133
2134 nt_status = samdb_set_password(ldb, mem_ctx,
2135 user_dn, NULL,
2136 new_password,
2137 lmNewHash, ntNewHash,
2138 user_change,
2139 reject_reason, _dominfo);
2140 if (!NT_STATUS_IS_OK(nt_status)) {
2141 ldb_transaction_cancel(ldb);
2142 talloc_free(user_dn);
2143 return nt_status;
2144 }
2145
2146 ret = ldb_transaction_commit(ldb);
2147 if (ret != LDB_SUCCESS) {
2148 DEBUG(0,("Failed to commit transaction to change password on %s: %s\n",
2149 ldb_dn_get_linearized(user_dn),
2150 ldb_errstring(ldb)));
2151 talloc_free(user_dn);
2152 return NT_STATUS_TRANSACTION_ABORTED;
2153 }
2154
2155 talloc_free(user_dn);
2156 return NT_STATUS_OK;
2157 }
2158
2159
2160 NTSTATUS samdb_create_foreign_security_principal(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
2161 struct dom_sid *sid, struct ldb_dn **ret_dn)
2162 {
2163 struct ldb_message *msg;
2164 struct ldb_dn *basedn;
2165 char *sidstr;
2166 int ret;
2167
2168 sidstr = dom_sid_string(mem_ctx, sid);
2169 NT_STATUS_HAVE_NO_MEMORY(sidstr);
2170
2171 /* We might have to create a ForeignSecurityPrincipal, even if this user
2172 * is in our own domain */
2173
2174 msg = ldb_msg_new(sidstr);
2175 if (msg == NULL) {
2176 talloc_free(sidstr);
2177 return NT_STATUS_NO_MEMORY;
2178 }
2179
2180 ret = dsdb_wellknown_dn(sam_ctx, sidstr,
2181 ldb_get_default_basedn(sam_ctx),
2182 DS_GUID_FOREIGNSECURITYPRINCIPALS_CONTAINER,
2183 &basedn);
2184 if (ret != LDB_SUCCESS) {
2185 DEBUG(0, ("Failed to find DN for "
2186 "ForeignSecurityPrincipal container - %s\n", ldb_errstring(sam_ctx)));
2187 talloc_free(sidstr);
2188 return NT_STATUS_INTERNAL_DB_CORRUPTION;
2189 }
2190
2191 /* add core elements to the ldb_message for the alias */
2192 msg->dn = basedn;
2193 if ( ! ldb_dn_add_child_fmt(msg->dn, "CN=%s", sidstr)) {
2194 talloc_free(sidstr);
2195 return NT_STATUS_NO_MEMORY;
2196 }
2197
2198 samdb_msg_add_string(sam_ctx, msg, msg,
2199 "objectClass",
2200 "foreignSecurityPrincipal");
2201
2202 /* create the alias */
2203 ret = ldb_add(sam_ctx, msg);
2204 if (ret != LDB_SUCCESS) {
2205 DEBUG(0,("Failed to create foreignSecurityPrincipal "
2206 "record %s: %s\n",
2207 ldb_dn_get_linearized(msg->dn),
2208 ldb_errstring(sam_ctx)));
2209 talloc_free(sidstr);
2210 return NT_STATUS_INTERNAL_DB_CORRUPTION;
2211 }
2212
2213 *ret_dn = talloc_steal(mem_ctx, msg->dn);
2214 talloc_free(sidstr);
2215
2216 return NT_STATUS_OK;
2217 }
2218
2219
2220 /*
2221 Find the DN of a domain, assuming it to be a dotted.dns name
2222 */
2223
2224 struct ldb_dn *samdb_dns_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *dns_domain)
2225 {
2226 unsigned int i;
2227 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2228 const char *binary_encoded;
2229 const char **split_realm;
2230 struct ldb_dn *dn;
2231
2232 if (!tmp_ctx) {
2233 return NULL;
2234 }
2235
2236 split_realm = (const char **)str_list_make(tmp_ctx, dns_domain, ".");
2237 if (!split_realm) {
2238 talloc_free(tmp_ctx);
2239 return NULL;
2240 }
2241 dn = ldb_dn_new(mem_ctx, ldb, NULL);
2242 for (i=0; split_realm[i]; i++) {
2243 binary_encoded = ldb_binary_encode_string(tmp_ctx, split_realm[i]);
2244 if (!ldb_dn_add_base_fmt(dn, "dc=%s", binary_encoded)) {
2245 DEBUG(2, ("Failed to add dc=%s element to DN %s\n",
2246 binary_encoded, ldb_dn_get_linearized(dn)));
2247 talloc_free(tmp_ctx);
2248 return NULL;
2249 }
2250 }
2251 if (!ldb_dn_validate(dn)) {
2252 DEBUG(2, ("Failed to validated DN %s\n",
2253 ldb_dn_get_linearized(dn)));
2254 talloc_free(tmp_ctx);
2255 return NULL;
2256 }
2257 talloc_free(tmp_ctx);
2258 return dn;
2259 }
2260
2261 /*
2262 Find the DN of a domain, be it the netbios or DNS name
2263 */
2264 struct ldb_dn *samdb_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
2265 const char *domain_name)
2266 {
2267 const char * const domain_ref_attrs[] = {
2268 "ncName", NULL
2269 };
2270 const char * const domain_ref2_attrs[] = {
2271 NULL
2272 };
2273 struct ldb_result *res_domain_ref;
2274 char *escaped_domain = ldb_binary_encode_string(mem_ctx, domain_name);
2275 /* find the domain's DN */
2276 int ret_domain = ldb_search(ldb, mem_ctx,
2277 &res_domain_ref,
2278 samdb_partitions_dn(ldb, mem_ctx),
2279 LDB_SCOPE_ONELEVEL,
2280 domain_ref_attrs,
2281 "(&(nETBIOSName=%s)(objectclass=crossRef))",
2282 escaped_domain);
2283 if (ret_domain != 0) {
2284 return NULL;
2285 }
2286
2287 if (res_domain_ref->count == 0) {
2288 ret_domain = ldb_search(ldb, mem_ctx,
2289 &res_domain_ref,
2290 samdb_dns_domain_to_dn(ldb, mem_ctx, domain_name),
2291 LDB_SCOPE_BASE,
2292 domain_ref2_attrs,
2293 "(objectclass=domain)");
2294 if (ret_domain != 0) {
2295 return NULL;
2296 }
2297
2298 if (res_domain_ref->count == 1) {
2299 return res_domain_ref->msgs[0]->dn;
2300 }
2301 return NULL;
2302 }
2303
2304 if (res_domain_ref->count > 1) {
2305 DEBUG(0,("Found %d records matching domain [%s]\n",
2306 ret_domain, domain_name));
2307 return NULL;
2308 }
2309
2310 return samdb_result_dn(ldb, mem_ctx, res_domain_ref->msgs[0], "nCName", NULL);
2311
2312 }
2313
2314
2315 /*
2316 use a GUID to find a DN
2317 */
2318 int dsdb_find_dn_by_guid(struct ldb_context *ldb,
2319 TALLOC_CTX *mem_ctx,
2320 const struct GUID *guid, struct ldb_dn **dn)
2321 {
2322 int ret;
2323 struct ldb_result *res;
2324 const char *attrs[] = { NULL };
2325 char *guid_str = GUID_string(mem_ctx, guid);
2326
2327 if (!guid_str) {
2328 return LDB_ERR_OPERATIONS_ERROR;
2329 }
2330
2331 ret = dsdb_search(ldb, mem_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
2332 DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
2333 DSDB_SEARCH_SHOW_EXTENDED_DN |
2334 DSDB_SEARCH_ONE_ONLY,
2335 "objectGUID=%s", guid_str);
2336 talloc_free(guid_str);
2337 if (ret != LDB_SUCCESS) {
2338 return ret;
2339 }
2340
2341 *dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
2342 talloc_free(res);
2343
2344 return LDB_SUCCESS;
2345 }
2346
2347 /*
2348 use a DN to find a GUID with a given attribute name
2349 */
2350 int dsdb_find_guid_attr_by_dn(struct ldb_context *ldb,
2351 struct ldb_dn *dn, const char *attribute,
2352 struct GUID *guid)
2353 {
2354 int ret;
2355 struct ldb_result *res;
2356 const char *attrs[2];
2357 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2358
2359 attrs[0] = attribute;
2360 attrs[1] = NULL;
2361
2362 ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
2363 if (ret != LDB_SUCCESS) {
2364 talloc_free(tmp_ctx);
2365 return ret;
2366 }
2367 if (res->count < 1) {
2368 talloc_free(tmp_ctx);
2369 return LDB_ERR_NO_SUCH_OBJECT;
2370 }
2371 *guid = samdb_result_guid(res->msgs[0], attribute);
2372 talloc_free(tmp_ctx);
2373 return LDB_SUCCESS;
2374 }
2375
2376 /*
2377 use a DN to find a GUID
2378 */
2379 int dsdb_find_guid_by_dn(struct ldb_context *ldb,
2380 struct ldb_dn *dn, struct GUID *guid)
2381 {
2382 return dsdb_find_guid_attr_by_dn(ldb, dn, "objectGUID", guid);
2383 }
2384
2385
2386
2387 /*
2388 adds the given GUID to the given ldb_message. This value is added
2389 for the given attr_name (may be either "objectGUID" or "parentGUID").
2390 */
2391 int dsdb_msg_add_guid(struct ldb_message *msg,
2392 struct GUID *guid,
2393 const char *attr_name)
2394 {
2395 int ret;
2396 struct ldb_val v;
2397 NTSTATUS status;
2398 TALLOC_CTX *tmp_ctx = talloc_init("dsdb_msg_add_guid");
2399
2400 status = GUID_to_ndr_blob(guid, tmp_ctx, &v);
2401 if (!NT_STATUS_IS_OK(status)) {
2402 ret = LDB_ERR_OPERATIONS_ERROR;
2403 goto done;
2404 }
2405
2406 ret = ldb_msg_add_steal_value(msg, attr_name, &v);
2407 if (ret != LDB_SUCCESS) {
2408 DEBUG(4,(__location__ ": Failed to add %s to the message\n",
2409 attr_name));
2410 goto done;
2411 }
2412
2413 ret = LDB_SUCCESS;
2414
2415 done:
2416 talloc_free(tmp_ctx);
2417 return ret;
2418
2419 }
2420
2421
2422 /*
2423 use a DN to find a SID
2424 */
2425 int dsdb_find_sid_by_dn(struct ldb_context *ldb,
2426 struct ldb_dn *dn, struct dom_sid *sid)
2427 {
2428 int ret;
2429 struct ldb_result *res;
2430 const char *attrs[] = { "objectSID", NULL };
2431 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2432 struct dom_sid *s;
2433
2434 ZERO_STRUCTP(sid);
2435
2436 ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
2437 if (ret != LDB_SUCCESS) {
2438 talloc_free(tmp_ctx);
2439 return ret;
2440 }
2441 if (res->count < 1) {
2442 talloc_free(tmp_ctx);
2443 return LDB_ERR_NO_SUCH_OBJECT;
2444 }
2445 s = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSID");
2446 if (s == NULL) {
2447 talloc_free(tmp_ctx);
2448 return LDB_ERR_NO_SUCH_OBJECT;
2449 }
2450 *sid = *s;
2451 talloc_free(tmp_ctx);
2452 return LDB_SUCCESS;
2453 }
2454
2455
2456 /*
2457 load a repsFromTo blob list for a given partition GUID
2458 attr must be "repsFrom" or "repsTo"
2459 */
2460 WERROR dsdb_loadreps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
2461 const char *attr, struct repsFromToBlob **r, uint32_t *count)
2462 {
2463 const char *attrs[] = { attr, NULL };
2464 struct ldb_result *res = NULL;
2465 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2466 unsigned int i;
2467 struct ldb_message_element *el;
2468
2469 *r = NULL;
2470 *count = 0;
2471
2472 if (ldb_search(sam_ctx, tmp_ctx, &res, dn, LDB_SCOPE_BASE, attrs, NULL) != LDB_SUCCESS ||
2473 res->count < 1) {
2474 DEBUG(0,("dsdb_loadreps: failed to read partition object\n"));
2475 talloc_free(tmp_ctx);
2476 return WERR_DS_DRA_INTERNAL_ERROR;
2477 }
2478
2479 el = ldb_msg_find_element(res->msgs[0], attr);
2480 if (el == NULL) {
2481 /* it's OK to be empty */
2482 talloc_free(tmp_ctx);
2483 return WERR_OK;
2484 }
2485
2486 *count = el->num_values;
2487 *r = talloc_array(mem_ctx, struct repsFromToBlob, *count);
2488 if (*r == NULL) {
2489 talloc_free(tmp_ctx);
2490 return WERR_DS_DRA_INTERNAL_ERROR;
2491 }
2492
2493 for (i=0; i<(*count); i++) {
2494 enum ndr_err_code ndr_err;
2495 ndr_err = ndr_pull_struct_blob(&el->values[i],
2496 mem_ctx,
2497 &(*r)[i],
2498 (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
2499 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2500 talloc_free(tmp_ctx);
2501 return WERR_DS_DRA_INTERNAL_ERROR;
2502 }
2503 }
2504
2505 talloc_free(tmp_ctx);
2506
2507 return WERR_OK;
2508 }
2509
2510 /*
2511 save the repsFromTo blob list for a given partition GUID
2512 attr must be "repsFrom" or "repsTo"
2513 */
2514 WERROR dsdb_savereps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
2515 const char *attr, struct repsFromToBlob *r, uint32_t count)
2516 {
2517 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2518 struct ldb_message *msg;
2519 struct ldb_message_element *el;
2520 unsigned int i;
2521
2522 msg = ldb_msg_new(tmp_ctx);
2523 msg->dn = dn;
2524 if (ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_REPLACE, &el) != LDB_SUCCESS) {
2525 goto failed;
2526 }
2527
2528 el->values = talloc_array(msg, struct ldb_val, count);
2529 if (!el->values) {
2530 goto failed;
2531 }
2532
2533 for (i=0; i<count; i++) {
2534 struct ldb_val v;
2535 enum ndr_err_code ndr_err;
2536
2537 ndr_err = ndr_push_struct_blob(&v, tmp_ctx,
2538 &r[i],
2539 (ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
2540 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2541 goto failed;
2542 }
2543
2544 el->num_values++;
2545 el->values[i] = v;
2546 }
2547
2548 if (ldb_modify(sam_ctx, msg) != LDB_SUCCESS) {
2549 DEBUG(0,("Failed to store %s - %s\n", attr, ldb_errstring(sam_ctx)));
2550 goto failed;
2551 }
2552
2553 talloc_free(tmp_ctx);
2554
2555 return WERR_OK;
2556
2557 failed:
2558 talloc_free(tmp_ctx);
2559 return WERR_DS_DRA_INTERNAL_ERROR;
2560 }
2561
2562
2563 /*
2564 load the uSNHighest and the uSNUrgent attributes from the @REPLCHANGED
2565 object for a partition
2566 */
2567 int dsdb_load_partition_usn(struct ldb_context *ldb, struct ldb_dn *dn,
2568 uint64_t *uSN, uint64_t *urgent_uSN)
2569 {
2570 struct ldb_request *req;
2571 int ret;
2572 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2573 struct dsdb_control_current_partition *p_ctrl;
2574 struct ldb_result *res;
2575
2576 res = talloc_zero(tmp_ctx, struct ldb_result);
2577 if (!res) {
2578 talloc_free(tmp_ctx);
2579 return LDB_ERR_OPERATIONS_ERROR;
2580 }
2581
2582 ret = ldb_build_search_req(&req, ldb, tmp_ctx,
2583 ldb_dn_new(tmp_ctx, ldb, "@REPLCHANGED"),
2584 LDB_SCOPE_BASE,
2585 NULL, NULL,
2586 NULL,
2587 res, ldb_search_default_callback,
2588 NULL);
2589 if (ret != LDB_SUCCESS) {
2590 talloc_free(tmp_ctx);
2591 return ret;
2592 }
2593
2594 p_ctrl = talloc(req, struct dsdb_control_current_partition);
2595 if (p_ctrl == NULL) {
2596 talloc_free(res);
2597 return LDB_ERR_OPERATIONS_ERROR;
2598 }
2599 p_ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
2600 p_ctrl->dn = dn;
2601
2602
2603 ret = ldb_request_add_control(req,
2604 DSDB_CONTROL_CURRENT_PARTITION_OID,
2605 false, p_ctrl);
2606 if (ret != LDB_SUCCESS) {
2607 talloc_free(tmp_ctx);
2608 return ret;
2609 }
2610
2611 /* Run the new request */
2612 ret = ldb_request(ldb, req);
2613
2614 if (ret == LDB_SUCCESS) {
2615 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
2616 }
2617
2618 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2619 /* it hasn't been created yet, which means
2620 an implicit value of zero */
2621 *uSN = 0;
2622 talloc_free(tmp_ctx);
2623 return LDB_SUCCESS;
2624 }
2625
2626 if (ret != LDB_SUCCESS) {
2627 talloc_free(tmp_ctx);
2628 return ret;
2629 }
2630
2631 if (res->count < 1) {
2632 *uSN = 0;
2633 if (urgent_uSN) {
2634 *urgent_uSN = 0;
2635 }
2636 } else {
2637 *uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNHighest", 0);
2638 if (urgent_uSN) {
2639 *urgent_uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNUrgent", 0);
2640 }
2641 }
2642
2643 talloc_free(tmp_ctx);
2644
2645 return LDB_SUCCESS;
2646 }
2647
2648 int drsuapi_DsReplicaCursor2_compare(const struct drsuapi_DsReplicaCursor2 *c1,
2649 const struct drsuapi_DsReplicaCursor2 *c2)
2650 {
2651 return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
2652 }
2653
2654 int drsuapi_DsReplicaCursor_compare(const struct drsuapi_DsReplicaCursor *c1,
2655 const struct drsuapi_DsReplicaCursor *c2)
2656 {
2657 return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
2658 }
2659
2660
2661 /*
2662 see if a computer identified by its invocationId is a RODC
2663 */
2664 int samdb_is_rodc(struct ldb_context *sam_ctx, const struct GUID *objectGUID, bool *is_rodc)
2665 {
2666 /* 1) find the DN for this servers NTDSDSA object
2667 2) search for the msDS-isRODC attribute
2668 3) if not present then not a RODC
2669 4) if present and TRUE then is a RODC
2670 */
2671 struct ldb_dn *config_dn;
2672 const char *attrs[] = { "msDS-isRODC", NULL };
2673 int ret;
2674 struct ldb_result *res;
2675 TALLOC_CTX *tmp_ctx = talloc_new(sam_ctx);
2676
2677 config_dn = ldb_get_config_basedn(sam_ctx);
2678 if (!config_dn) {
2679 talloc_free(tmp_ctx);
2680 return LDB_ERR_OPERATIONS_ERROR;
2681 }
2682
2683 ret = dsdb_search(sam_ctx, tmp_ctx, &res, config_dn, LDB_SCOPE_SUBTREE, attrs,
2684 DSDB_SEARCH_ONE_ONLY, "objectGUID=%s", GUID_string(tmp_ctx, objectGUID));
2685
2686 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2687 *is_rodc = false;
2688 talloc_free(tmp_ctx);
2689 return LDB_SUCCESS;
2690 }
2691
2692 if (ret != LDB_SUCCESS) {
2693 DEBUG(1,(("Failed to find our own NTDS Settings object by objectGUID=%s!\n"),
2694 GUID_string(tmp_ctx, objectGUID)));
2695 *is_rodc = false;
2696 talloc_free(tmp_ctx);
2697 return ret;
2698 }
2699
2700 ret = ldb_msg_find_attr_as_bool(res->msgs[0], "msDS-isRODC", 0);
2701 *is_rodc = (ret == 1);
2702
2703 talloc_free(tmp_ctx);
2704 return LDB_SUCCESS;
2705 }
2706
2707
2708 /*
2709 see if we are a RODC
2710 */
2711 int samdb_rodc(struct ldb_context *sam_ctx, bool *am_rodc)
2712 {
2713 const struct GUID *objectGUID;
2714 int ret;
2715 bool *cached;
2716
2717 /* see if we have a cached copy */
2718 cached = (bool *)ldb_get_opaque(sam_ctx, "cache.am_rodc");
2719 if (cached) {
2720 *am_rodc = *cached;
2721 return LDB_SUCCESS;
2722 }
2723
2724 objectGUID = samdb_ntds_objectGUID(sam_ctx);
2725 if (!objectGUID) {
2726 return LDB_ERR_OPERATIONS_ERROR;
2727 }
2728
2729 ret = samdb_is_rodc(sam_ctx, objectGUID, am_rodc);
2730 if (ret != LDB_SUCCESS) {
2731 return ret;
2732 }
2733
2734 cached = talloc(sam_ctx, bool);
2735 if (cached == NULL) {
2736 return LDB_ERR_OPERATIONS_ERROR;
2737 }
2738 *cached = *am_rodc;
2739
2740 ret = ldb_set_opaque(sam_ctx, "cache.am_rodc", cached);
2741 if (ret != LDB_SUCCESS) {
2742 talloc_free(cached);
2743 return LDB_ERR_OPERATIONS_ERROR;
2744 }
2745
2746 return LDB_SUCCESS;
2747 }
2748
2749 bool samdb_set_am_rodc(struct ldb_context *ldb, bool am_rodc)
2750 {
2751 TALLOC_CTX *tmp_ctx;
2752 bool *cached;
2753
2754 tmp_ctx = talloc_new(ldb);
2755 if (tmp_ctx == NULL) {
2756 goto failed;
2757 }
2758
2759 cached = talloc(tmp_ctx, bool);
2760 if (!cached) {
2761 goto failed;
2762 }
2763
2764 *cached = am_rodc;
2765 if (ldb_set_opaque(ldb, "cache.am_rodc", cached) != LDB_SUCCESS) {
2766 goto failed;
2767 }
2768
2769 talloc_steal(ldb, cached);
2770 talloc_free(tmp_ctx);
2771 return true;
2772
2773 failed:
2774 DEBUG(1,("Failed to set our own cached am_rodc in the ldb!\n"));
2775 talloc_free(tmp_ctx);
2776 return false;
2777 }
2778
2779
2780 /*
2781 return NTDS options flags. See MS-ADTS 7.1.1.2.2.1.2.1.1
2782
2783 flags are DS_NTDS_OPTION_*
2784 */
2785 int samdb_ntds_options(struct ldb_context *ldb, uint32_t *options)
2786 {
2787 TALLOC_CTX *tmp_ctx;
2788 const char *attrs[] = { "options", NULL };
2789 int ret;
2790 struct ldb_result *res;
2791
2792 tmp_ctx = talloc_new(ldb);
2793 if (tmp_ctx == NULL) {
2794 goto failed;
2795 }
2796
2797 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
2798 if (ret) {
2799 goto failed;
2800 }
2801
2802 if (res->count != 1) {
2803 goto failed;
2804 }
2805
2806 *options = samdb_result_uint(res->msgs[0], "options", 0);
2807
2808 talloc_free(tmp_ctx);
2809
2810 return LDB_SUCCESS;
2811
2812 failed:
2813 DEBUG(1,("Failed to find our own NTDS Settings options in the ldb!\n"));
2814 talloc_free(tmp_ctx);
2815 return LDB_ERR_NO_SUCH_OBJECT;
2816 }
2817
2818 const char* samdb_ntds_object_category(TALLOC_CTX *tmp_ctx, struct ldb_context *ldb)
2819 {
2820 const char *attrs[] = { "objectCategory", NULL };
2821 int ret;
2822 struct ldb_result *res;
2823
2824 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
2825 if (ret) {
2826 goto failed;
2827 }
2828
2829 if (res->count != 1) {
2830 goto failed;
2831 }
2832
2833 return samdb_result_string(res->msgs[0], "objectCategory", NULL);
2834
2835 failed:
2836 DEBUG(1,("Failed to find our own NTDS Settings objectCategory in the ldb!\n"));
2837 return NULL;
2838 }
2839
2840 /*
2841 * Function which generates a "lDAPDisplayName" attribute from a "CN" one.
2842 * Algorithm implemented according to MS-ADTS 3.1.1.2.3.4
2843 */
2844 const char *samdb_cn_to_lDAPDisplayName(TALLOC_CTX *mem_ctx, const char *cn)
2845 {
2846 char **tokens, *ret;
2847 size_t i;
2848
2849 tokens = str_list_make(mem_ctx, cn, " -_");
2850 if (tokens == NULL)
2851 return NULL;
2852
2853 /* "tolower()" and "toupper()" should also work properly on 0x00 */
2854 tokens[0][0] = tolower(tokens[0][0]);
2855 for (i = 1; i < str_list_length((const char **)tokens); i++)
2856 tokens[i][0] = toupper(tokens[i][0]);
2857
2858 ret = talloc_strdup(mem_ctx, tokens[0]);
2859 for (i = 1; i < str_list_length((const char **)tokens); i++)
2860 ret = talloc_asprintf_append_buffer(ret, "%s", tokens[i]);
2861
2862 talloc_free(tokens);
2863
2864 return ret;
2865 }
2866
2867 /*
2868 return domain functional level
2869 returns DS_DOMAIN_FUNCTION_*
2870 */
2871 int dsdb_functional_level(struct ldb_context *ldb)
2872 {
2873 int *domainFunctionality =
2874 talloc_get_type(ldb_get_opaque(ldb, "domainFunctionality"), int);
2875 if (!domainFunctionality) {
2876 DEBUG(0,(__location__ ": WARNING: domainFunctionality not setup\n"));
2877 return DS_DOMAIN_FUNCTION_2000;
2878 }
2879 return *domainFunctionality;
2880 }
2881
2882 /*
2883 set a GUID in an extended DN structure
2884 */
2885 int dsdb_set_extended_dn_guid(struct ldb_dn *dn, const struct GUID *guid, const char *component_name)
2886 {
2887 struct ldb_val v;
2888 NTSTATUS status;
2889 int ret;
2890
2891 status = GUID_to_ndr_blob(guid, dn, &v);
2892 if (!NT_STATUS_IS_OK(status)) {
2893 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
2894 }
2895
2896 ret = ldb_dn_set_extended_component(dn, component_name, &v);
2897 data_blob_free(&v);
2898 return ret;
2899 }
2900
2901 /*
2902 return a GUID from a extended DN structure
2903 */
2904 NTSTATUS dsdb_get_extended_dn_guid(struct ldb_dn *dn, struct GUID *guid, const char *component_name)
2905 {
2906 const struct ldb_val *v;
2907
2908 v = ldb_dn_get_extended_component(dn, component_name);
2909 if (v == NULL) {
2910 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2911 }
2912
2913 return GUID_from_ndr_blob(v, guid);
2914 }
2915
2916 /*
2917 return a uint64_t from a extended DN structure
2918 */
2919 NTSTATUS dsdb_get_extended_dn_uint64(struct ldb_dn *dn, uint64_t *val, const char *component_name)
2920 {
2921 const struct ldb_val *v;
2922 char *s;
2923
2924 v = ldb_dn_get_extended_component(dn, component_name);
2925 if (v == NULL) {
2926 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2927 }
2928 s = talloc_strndup(dn, (const char *)v->data, v->length);
2929 NT_STATUS_HAVE_NO_MEMORY(s);
2930
2931 *val = strtoull(s, NULL, 0);
2932
2933 talloc_free(s);
2934 return NT_STATUS_OK;
2935 }
2936
2937 /*
2938 return a NTTIME from a extended DN structure
2939 */
2940 NTSTATUS dsdb_get_extended_dn_nttime(struct ldb_dn *dn, NTTIME *nttime, const char *component_name)
2941 {
2942 return dsdb_get_extended_dn_uint64(dn, nttime, component_name);
2943 }
2944
2945 /*
2946 return a uint32_t from a extended DN structure
2947 */
2948 NTSTATUS dsdb_get_extended_dn_uint32(struct ldb_dn *dn, uint32_t *val, const char *component_name)
2949 {
2950 const struct ldb_val *v;
2951 char *s;
2952
2953 v = ldb_dn_get_extended_component(dn, component_name);
2954 if (v == NULL) {
2955 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2956 }
2957
2958 s = talloc_strndup(dn, (const char *)v->data, v->length);
2959 NT_STATUS_HAVE_NO_MEMORY(s);
2960
2961 *val = strtoul(s, NULL, 0);
2962
2963 talloc_free(s);
2964 return NT_STATUS_OK;
2965 }
2966
2967 /*
2968 return a dom_sid from a extended DN structure
2969 */
2970 NTSTATUS dsdb_get_extended_dn_sid(struct ldb_dn *dn, struct dom_sid *sid, const char *component_name)
2971 {
2972 const struct ldb_val *sid_blob;
2973 struct TALLOC_CTX *tmp_ctx;
2974 enum ndr_err_code ndr_err;
2975
2976 sid_blob = ldb_dn_get_extended_component(dn, "SID");
2977 if (!sid_blob) {
2978 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2979 }
2980
2981 tmp_ctx = talloc_new(NULL);
2982
2983 ndr_err = ndr_pull_struct_blob_all(sid_blob, tmp_ctx, sid,
2984 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
2985 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2986 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
2987 talloc_free(tmp_ctx);
2988 return status;
2989 }
2990
2991 talloc_free(tmp_ctx);
2992 return NT_STATUS_OK;
2993 }
2994
2995
2996 /*
2997 return RMD_FLAGS directly from a ldb_dn
2998 returns 0 if not found
2999 */
3000 uint32_t dsdb_dn_rmd_flags(struct ldb_dn *dn)
3001 {
3002 const struct ldb_val *v;
3003 char buf[32];
3004 v = ldb_dn_get_extended_component(dn, "RMD_FLAGS");
3005 if (!v || v->length > sizeof(buf)-1) return 0;
3006 strncpy(buf, (const char *)v->data, v->length);
3007 buf[v->length] = 0;
3008 return strtoul(buf, NULL, 10);
3009 }
3010
3011 /*
3012 return RMD_FLAGS directly from a ldb_val for a DN
3013 returns 0 if RMD_FLAGS is not found
3014 */
3015 uint32_t dsdb_dn_val_rmd_flags(struct ldb_val *val)
3016 {
3017 const char *p;
3018 uint32_t flags;
3019 char *end;
3020
3021 if (val->length < 13) {
3022 return 0;
3023 }
3024 p = memmem(val->data, val->length-2, "<RMD_FLAGS=", 11);
3025 if (!p) {
3026 return 0;
3027 }
3028 flags = strtoul(p+11, &end, 10);
3029 if (!end || *end != '>') {
3030 /* it must end in a > */
3031 return 0;
3032 }
3033 return flags;
3034 }
3035
3036 /*
3037 return true if a ldb_val containing a DN in storage form is deleted
3038 */
3039 bool dsdb_dn_is_deleted_val(struct ldb_val *val)
3040 {
3041 return (dsdb_dn_val_rmd_flags(val) & DSDB_RMD_FLAG_DELETED) != 0;
3042 }
3043
3044 /*
3045 return true if a ldb_val containing a DN in storage form is
3046 in the upgraded w2k3 linked attribute format
3047 */
3048 bool dsdb_dn_is_upgraded_link_val(struct ldb_val *val)
3049 {
3050 return memmem(val->data, val->length, "<RMD_ADDTIME=", 13) != NULL;
3051 }
3052
3053 /*
3054 return a DN for a wellknown GUID
3055 */
3056 int dsdb_wellknown_dn(struct ldb_context *samdb, TALLOC_CTX *mem_ctx,
3057 struct ldb_dn *nc_root, const char *wk_guid,
3058 struct ldb_dn **wkguid_dn)
3059 {
3060 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
3061 const char *attrs[] = { NULL };
3062 int ret;
3063 struct ldb_dn *dn;
3064 struct ldb_result *res;
3065
3066 /* construct the magic WKGUID DN */
3067 dn = ldb_dn_new_fmt(tmp_ctx, samdb, "<WKGUID=%s,%s>",
3068 wk_guid, ldb_dn_get_linearized(nc_root));
3069 if (!wkguid_dn) {
3070 talloc_free(tmp_ctx);
3071 return LDB_ERR_OPERATIONS_ERROR;
3072 }
3073
3074 ret = dsdb_search_dn(samdb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
3075 if (ret != LDB_SUCCESS) {
3076 talloc_free(tmp_ctx);
3077 return ret;
3078 }
3079
3080 (*wkguid_dn) = talloc_steal(mem_ctx, res->msgs[0]->dn);
3081 talloc_free(tmp_ctx);
3082 return LDB_SUCCESS;
3083 }
3084
3085
3086 static int dsdb_dn_compare_ptrs(struct ldb_dn **dn1, struct ldb_dn **dn2)
3087 {
3088 return ldb_dn_compare(*dn1, *dn2);
3089 }
3090
3091 /*
3092 find a NC root given a DN within the NC
3093 */
3094 int dsdb_find_nc_root(struct ldb_context *samdb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
3095 struct ldb_dn **nc_root)
3096 {
3097 const char *root_attrs[] = { "namingContexts", NULL };
3098 TALLOC_CTX *tmp_ctx;
3099 int ret;
3100 struct ldb_message_element *el;
3101 struct ldb_result *root_res;
3102 unsigned int i;
3103 struct ldb_dn **nc_dns;
3104
3105 tmp_ctx = talloc_new(samdb);
3106 if (tmp_ctx == NULL) {
3107 return LDB_ERR_OPERATIONS_ERROR;
3108 }
3109
3110 ret = ldb_search(samdb, tmp_ctx, &root_res,
3111 ldb_dn_new(tmp_ctx, samdb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
3112 if (ret) {
3113 DEBUG(1,("Searching for namingContexts in rootDSE failed: %s\n", ldb_errstring(samdb)));
3114 talloc_free(tmp_ctx);
3115 return ret;
3116 }
3117
3118 el = ldb_msg_find_element(root_res->msgs[0], "namingContexts");
3119 if (!el) {
3120 DEBUG(1,("Finding namingContexts element in root_res failed: %s\n",
3121 ldb_errstring(samdb)));
3122 talloc_free(tmp_ctx);
3123 return LDB_ERR_NO_SUCH_ATTRIBUTE;
3124 }
3125
3126 nc_dns = talloc_array(tmp_ctx, struct ldb_dn *, el->num_values);
3127 if (!nc_dns) {
3128 talloc_free(tmp_ctx);
3129 return LDB_ERR_OPERATIONS_ERROR;
3130 }
3131
3132 for (i=0; i<el->num_values; i++) {
3133 nc_dns[i] = ldb_dn_from_ldb_val(nc_dns, samdb, &el->values[i]);
3134 if (nc_dns[i] == NULL) {
3135 talloc_free(tmp_ctx);
3136 return LDB_ERR_OPERATIONS_ERROR;
3137 }
3138 }
3139
3140 TYPESAFE_QSORT(nc_dns, el->num_values, dsdb_dn_compare_ptrs);
3141
3142 for (i=0; i<el->num_values; i++) {
3143 if (ldb_dn_compare_base(nc_dns[i], dn) == 0) {
3144 (*nc_root) = talloc_steal(mem_ctx, nc_dns[i]);
3145 talloc_free(tmp_ctx);
3146 return LDB_SUCCESS;
3147 }
3148 }
3149
3150 talloc_free(tmp_ctx);
3151 return LDB_ERR_NO_SUCH_OBJECT;
3152 }
3153
3154
3155 /*
3156 find the deleted objects DN for any object, by looking for the NC
3157 root, then looking up the wellknown GUID
3158 */
3159 int dsdb_get_deleted_objects_dn(struct ldb_context *ldb,
3160 TALLOC_CTX *mem_ctx, struct ldb_dn *obj_dn,
3161 struct ldb_dn **do_dn)
3162 {
3163 struct ldb_dn *nc_root;
3164 int ret;
3165
3166 ret = dsdb_find_nc_root(ldb, mem_ctx, obj_dn, &nc_root);
3167 if (ret != LDB_SUCCESS) {
3168 return ret;
3169 }
3170
3171 ret = dsdb_wellknown_dn(ldb, mem_ctx, nc_root, DS_GUID_DELETED_OBJECTS_CONTAINER, do_dn);
3172 talloc_free(nc_root);
3173 return ret;
3174 }
3175
3176 /*
3177 return the tombstoneLifetime, in days
3178 */
3179 int dsdb_tombstone_lifetime(struct ldb_context *ldb, uint32_t *lifetime)
3180 {
3181 struct ldb_dn *dn;
3182 dn = ldb_get_config_basedn(ldb);
3183 if (!dn) {
3184 return LDB_ERR_NO_SUCH_OBJECT;
3185 }
3186 dn = ldb_dn_copy(ldb, dn);
3187 if (!dn) {
3188 return LDB_ERR_OPERATIONS_ERROR;
3189 }
3190 /* see MS-ADTS section 7.1.1.2.4.1.1. There doesn't appear to
3191 be a wellknown GUID for this */
3192 if (!ldb_dn_add_child_fmt(dn, "CN=Directory Service,CN=Windows NT,CN=Services")) {
3193 talloc_free(dn);
3194 return LDB_ERR_OPERATIONS_ERROR;
3195 }
3196
3197 *lifetime = samdb_search_uint(ldb, dn, 180, dn, "tombstoneLifetime", "objectClass=nTDSService");
3198 talloc_free(dn);
3199 return LDB_SUCCESS;
3200 }
3201
3202 /*
3203 compare a ldb_val to a string case insensitively
3204 */
3205 int samdb_ldb_val_case_cmp(const char *s, struct ldb_val *v)
3206 {
3207 size_t len = strlen(s);
3208 int ret;
3209 if (len > v->length) return 1;
3210 ret = strncasecmp(s, (const char *)v->data, v->length);
3211 if (ret != 0) return ret;
3212 if (v->length > len && v->data[len] != 0) {
3213 return -1;
3214 }
3215 return 0;
3216 }
3217
3218
3219 /*
3220 load the UDV for a partition in v2 format
3221 The list is returned sorted, and with our local cursor added
3222 */
3223 int dsdb_load_udv_v2(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
3224 struct drsuapi_DsReplicaCursor2 **cursors, uint32_t *count)
3225 {
3226 static const char *attrs[] = { "replUpToDateVector", NULL };
3227 struct ldb_result *r;
3228 const struct ldb_val *ouv_value;
3229 unsigned int i;
3230 int ret;
3231 uint64_t highest_usn;
3232 const struct GUID *our_invocation_id;
3233 struct timeval now = timeval_current();
3234
3235 ret = ldb_search(samdb, mem_ctx, &r, dn, LDB_SCOPE_BASE, attrs, NULL);
3236 if (ret != LDB_SUCCESS) {
3237 return ret;
3238 }
3239
3240 ouv_value = ldb_msg_find_ldb_val(r->msgs[0], "replUpToDateVector");
3241 if (ouv_value) {
3242 enum ndr_err_code ndr_err;
3243 struct replUpToDateVectorBlob ouv;
3244
3245 ndr_err = ndr_pull_struct_blob(ouv_value, r, &ouv,
3246 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
3247 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3248 talloc_free(r);
3249 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
3250 }
3251 if (ouv.version != 2) {
3252 /* we always store as version 2, and
3253 * replUpToDateVector is not replicated
3254 */
3255 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
3256 }
3257
3258 *count = ouv.ctr.ctr2.count;
3259 *cursors = talloc_steal(mem_ctx, ouv.ctr.ctr2.cursors);
3260 } else {
3261 *count = 0;
3262 *cursors = NULL;
3263 }
3264
3265 talloc_free(r);
3266
3267 our_invocation_id = samdb_ntds_invocation_id(samdb);
3268 if (!our_invocation_id) {
3269 DEBUG(0,(__location__ ": No invocationID on samdb - %s\n", ldb_errstring(samdb)));
3270 talloc_free(*cursors);
3271 return LDB_ERR_OPERATIONS_ERROR;
3272 }
3273
3274 ret = dsdb_load_partition_usn(samdb, dn, &highest_usn, NULL);
3275 if (ret != LDB_SUCCESS) {
3276 /* nothing to add - this can happen after a vampire */
3277 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3278 return LDB_SUCCESS;
3279 }
3280
3281 for (i=0; i<*count; i++) {
3282 if (GUID_equal(our_invocation_id, &(*cursors)[i].source_dsa_invocation_id)) {
3283 (*cursors)[i].highest_usn = highest_usn;
3284 (*cursors)[i].last_sync_success = timeval_to_nttime(&now);
3285 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3286 return LDB_SUCCESS;
3287 }
3288 }
3289
3290 (*cursors) = talloc_realloc(mem_ctx, *cursors, struct drsuapi_DsReplicaCursor2, (*count)+1);
3291 if (! *cursors) {
3292 return LDB_ERR_OPERATIONS_ERROR;
3293 }
3294
3295 (*cursors)[*count].source_dsa_invocation_id = *our_invocation_id;
3296 (*cursors)[*count].highest_usn = highest_usn;
3297 (*cursors)[*count].last_sync_success = timeval_to_nttime(&now);
3298 (*count)++;
3299
3300 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3301
3302 return LDB_SUCCESS;
3303 }
3304
3305 /*
3306 load the UDV for a partition in version 1 format
3307 The list is returned sorted, and with our local cursor added
3308 */
3309 int dsdb_load_udv_v1(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
3310 struct drsuapi_DsReplicaCursor **cursors, uint32_t *count)
3311 {
3312 struct drsuapi_DsReplicaCursor2 *v2;
3313 unsigned int i;
3314 int ret;
3315
3316 ret = dsdb_load_udv_v2(samdb, dn, mem_ctx, &v2, count);
3317 if (ret != LDB_SUCCESS) {
3318 return ret;
3319 }
3320
3321 if (*count == 0) {
3322 talloc_free(v2);
3323 *cursors = NULL;
3324 return LDB_SUCCESS;
3325 }
3326
3327 *cursors = talloc_array(mem_ctx, struct drsuapi_DsReplicaCursor, *count);
3328 if (*cursors == NULL) {
3329 talloc_free(v2);
3330 return LDB_ERR_OPERATIONS_ERROR;
3331 }
3332
3333 for (i=0; i<*count; i++) {
3334 (*cursors)[i].source_dsa_invocation_id = v2[i].source_dsa_invocation_id;
3335 (*cursors)[i].highest_usn = v2[i].highest_usn;
3336 }
3337 talloc_free(v2);
3338 return LDB_SUCCESS;
3339 }
3340
3341 /*
3342 add a set of controls to a ldb_request structure based on a set of
3343 flags. See util.h for a list of available flags
3344 */
3345 int dsdb_request_add_controls(struct ldb_request *req, uint32_t dsdb_flags)
3346 {
3347 int ret;
3348 if (dsdb_flags & DSDB_SEARCH_SEARCH_ALL_PARTITIONS) {
3349 struct ldb_search_options_control *options;
3350 /* Using the phantom root control allows us to search all partitions */
3351 options = talloc(req, struct ldb_search_options_control);
3352 if (options == NULL) {
3353 return LDB_ERR_OPERATIONS_ERROR;
3354 }
3355 options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
3356
3357 ret = ldb_request_add_control(req,
3358 LDB_CONTROL_SEARCH_OPTIONS_OID,
3359 true, options);
3360 if (ret != LDB_SUCCESS) {
3361 return ret;
3362 }
3363 }
3364
3365 if (dsdb_flags & DSDB_SEARCH_SHOW_DELETED) {
3366 ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
3367 if (ret != LDB_SUCCESS) {
3368 return ret;
3369 }
3370 }
3371
3372 if (dsdb_flags & DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT) {
3373 ret = ldb_request_add_control(req, DSDB_CONTROL_DN_STORAGE_FORMAT_OID, true, NULL);
3374 if (ret != LDB_SUCCESS) {
3375 return ret;
3376 }
3377 }
3378
3379 if (dsdb_flags & DSDB_SEARCH_SHOW_EXTENDED_DN) {
3380 struct ldb_extended_dn_control *extended_ctrl = talloc(req, struct ldb_extended_dn_control);
3381 if (!extended_ctrl) {
3382 return LDB_ERR_OPERATIONS_ERROR;
3383 }
3384 extended_ctrl->type = 1;
3385
3386 ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, extended_ctrl);
3387 if (ret != LDB_SUCCESS) {
3388 return ret;
3389 }
3390 }
3391
3392 if (dsdb_flags & DSDB_SEARCH_REVEAL_INTERNALS) {
3393 ret = ldb_request_add_control(req, LDB_CONTROL_REVEAL_INTERNALS, false, NULL);
3394 if (ret != LDB_SUCCESS) {
3395 return ret;
3396 }
3397 }
3398
3399 if (dsdb_flags & DSDB_MODIFY_RELAX) {
3400 ret = ldb_request_add_control(req, LDB_CONTROL_RELAX_OID, false, NULL);
3401 if (ret != LDB_SUCCESS) {
3402 return ret;
3403 }
3404 }
3405
3406 if (dsdb_flags & DSDB_MODIFY_PERMISSIVE) {
3407 ret = ldb_request_add_control(req, LDB_CONTROL_PERMISSIVE_MODIFY_OID, false, NULL);
3408 if (ret != LDB_SUCCESS) {
3409 return ret;
3410 }
3411 }
3412
3413 if (dsdb_flags & DSDB_FLAG_AS_SYSTEM) {
3414 ret = ldb_request_add_control(req, LDB_CONTROL_AS_SYSTEM_OID, false, NULL);
3415 if (ret != LDB_SUCCESS) {
3416 return ret;
3417 }
3418 }
3419
3420 return LDB_SUCCESS;
3421 }
3422
3423 /*
3424 a modify with a set of controls
3425 */
3426 int dsdb_modify(struct ldb_context *ldb, const struct ldb_message *message,
3427 uint32_t dsdb_flags)
3428 {
3429 struct ldb_request *req;
3430 int ret;
3431
3432 ret = ldb_build_mod_req(&req, ldb, ldb,
3433 message,
3434 NULL,
3435 NULL,
3436 ldb_op_default_callback,
3437 NULL);
3438
3439 if (ret != LDB_SUCCESS) return ret;
3440
3441 ret = dsdb_request_add_controls(req, dsdb_flags);
3442 if (ret != LDB_SUCCESS) {
3443 talloc_free(req);
3444 return ret;
3445 }
3446
3447 ret = dsdb_autotransaction_request(ldb, req);
3448
3449 talloc_free(req);
3450 return ret;
3451 }
3452
3453 /*
3454 like dsdb_modify() but set all the element flags to
3455 LDB_FLAG_MOD_REPLACE
3456 */
3457 int dsdb_replace(struct ldb_context *ldb, struct ldb_message *msg, uint32_t dsdb_flags)
3458 {
3459 unsigned int i;
3460
3461 /* mark all the message elements as LDB_FLAG_MOD_REPLACE */
3462 for (i=0;i<msg->num_elements;i++) {
3463 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
3464 }
3465
3466 return dsdb_modify(ldb, msg, dsdb_flags);
3467 }
3468
3469
3470 /*
3471 search for attrs on one DN, allowing for dsdb_flags controls
3472 */
3473 int dsdb_search_dn(struct ldb_context *ldb,
3474 TALLOC_CTX *mem_ctx,
3475 struct ldb_result **_res,
3476 struct ldb_dn *basedn,
3477 const char * const *attrs,
3478 uint32_t dsdb_flags)
3479 {
3480 int ret;
3481 struct ldb_request *req;
3482 struct ldb_result *res;
3483
3484 res = talloc_zero(mem_ctx, struct ldb_result);
3485 if (!res) {
3486 return LDB_ERR_OPERATIONS_ERROR;
3487 }
3488
3489 ret = ldb_build_search_req(&req, ldb, res,
3490 basedn,
3491 LDB_SCOPE_BASE,
3492 NULL,
3493 attrs,
3494 NULL,
3495 res,
3496 ldb_search_default_callback,
3497 NULL);
3498 if (ret != LDB_SUCCESS) {
3499 talloc_free(res);
3500 return ret;
3501 }
3502
3503 ret = dsdb_request_add_controls(req, dsdb_flags);
3504 if (ret != LDB_SUCCESS) {
3505 talloc_free(res);
3506 return ret;
3507 }
3508
3509 ret = ldb_request(ldb, req);
3510 if (ret == LDB_SUCCESS) {
3511 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
3512 }
3513
3514 talloc_free(req);
3515 if (ret != LDB_SUCCESS) {
3516 talloc_free(res);
3517 return ret;
3518 }
3519
3520 *_res = res;
3521 return LDB_SUCCESS;
3522 }
3523
3524 /*
3525 general search with dsdb_flags for controls
3526 */
3527 int dsdb_search(struct ldb_context *ldb,
3528 TALLOC_CTX *mem_ctx,
3529 struct ldb_result **_res,
3530 struct ldb_dn *basedn,
3531 enum ldb_scope scope,
3532 const char * const *attrs,
3533 uint32_t dsdb_flags,
3534 const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
3535 {
3536 int ret;
3537 struct ldb_request *req;
3538 struct ldb_result *res;
3539 va_list ap;
3540 char *expression = NULL;
3541 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
3542
3543 res = talloc_zero(tmp_ctx, struct ldb_result);
3544 if (!res) {
3545 talloc_free(tmp_ctx);
3546 return LDB_ERR_OPERATIONS_ERROR;
3547 }
3548
3549 if (exp_fmt) {
3550 va_start(ap, exp_fmt);
3551 expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
3552 va_end(ap);
3553
3554 if (!expression) {
3555 talloc_free(tmp_ctx);
3556 return LDB_ERR_OPERATIONS_ERROR;
3557 }
3558 }
3559
3560 ret = ldb_build_search_req(&req, ldb, tmp_ctx,
3561 basedn,
3562 scope,
3563 expression,
3564 attrs,
3565 NULL,
3566 res,
3567 ldb_search_default_callback,
3568 NULL);
3569 if (ret != LDB_SUCCESS) {
3570 talloc_free(tmp_ctx);
3571 return ret;
3572 }
3573
3574 ret = dsdb_request_add_controls(req, dsdb_flags);
3575 if (ret != LDB_SUCCESS) {
3576 talloc_free(tmp_ctx);
3577 return ret;
3578 }
3579
3580 ret = ldb_request(ldb, req);
3581 if (ret == LDB_SUCCESS) {
3582 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
3583 }
3584
3585 if (ret != LDB_SUCCESS) {
3586 talloc_free(tmp_ctx);
3587 return ret;
3588 }
3589
3590 if (dsdb_flags & DSDB_SEARCH_ONE_ONLY) {
3591 if (res->count == 0) {
3592 talloc_free(tmp_ctx);
3593 return LDB_ERR_NO_SUCH_OBJECT;
3594 }
3595 if (res->count != 1) {
3596 talloc_free(tmp_ctx);
3597 return LDB_ERR_CONSTRAINT_VIOLATION;
3598 }
3599 }
3600
3601 *_res = talloc_steal(mem_ctx, res);
3602 talloc_free(tmp_ctx);
3603
3604 return LDB_SUCCESS;
3605 }
3606
3607
3608 /*
3609 general search with dsdb_flags for controls
3610 returns exactly 1 record or an error
3611 */
3612 int dsdb_search_one(struct ldb_context *ldb,
3613 TALLOC_CTX *mem_ctx,
3614 struct ldb_message **msg,
3615 struct ldb_dn *basedn,
3616 enum ldb_scope scope,
3617 const char * const *attrs,
3618 uint32_t dsdb_flags,
3619 const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
3620 {
3621 int ret;
3622 struct ldb_result *res;
3623 va_list ap;
3624 char *expression = NULL;
3625 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
3626
3627 dsdb_flags |= DSDB_SEARCH_ONE_ONLY;
3628
3629 res = talloc_zero(tmp_ctx, struct ldb_result);
3630 if (!res) {
3631 talloc_free(tmp_ctx);
3632 return LDB_ERR_OPERATIONS_ERROR;
3633 }
3634
3635 if (exp_fmt) {
3636 va_start(ap, exp_fmt);
3637 expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
3638 va_end(ap);
3639
3640 if (!expression) {
3641 talloc_free(tmp_ctx);
3642 return LDB_ERR_OPERATIONS_ERROR;
3643 }
3644 ret = dsdb_search(ldb, tmp_ctx, &res, basedn, scope, attrs,
3645 dsdb_flags, "%s", expression);
3646 } else {
3647 ret = dsdb_search(ldb, tmp_ctx, &res, basedn, scope, attrs,
3648 dsdb_flags, NULL);
3649 }
3650
3651 if (ret != LDB_SUCCESS) {
3652 talloc_free(tmp_ctx);
3653 return ret;
3654 }
3655
3656 *msg = talloc_steal(mem_ctx, res->msgs[0]);
3657 talloc_free(tmp_ctx);
3658
3659 return LDB_SUCCESS;
3660 }
3661
3662 /* returns back the forest DNS name */
3663 const char *samdb_forest_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
3664 {
3665 const char *forest_name = ldb_dn_canonical_string(mem_ctx,
3666 ldb_get_root_basedn(ldb));
3667 char *p;
3668
3669 if (forest_name == NULL) {
3670 return NULL;
3671 }
3672
3673 p = strchr(forest_name, '/');
3674 if (p) {
3675 *p = '\0';
3676 }
3677
3678 return forest_name;
3679 }
3680
3681 /*
3682 validate that an DSA GUID belongs to the specified user sid.
3683 The user SID must be a domain controller account (either RODC or
3684 RWDC)
3685 */
3686 int dsdb_validate_dsa_guid(struct ldb_context *ldb,
3687 const struct GUID *dsa_guid,
3688 const struct dom_sid *sid)
3689 {
3690 /* strategy:
3691 - find DN of record with the DSA GUID in the
3692 configuration partition (objectGUID)
3693 - remove "NTDS Settings" component from DN
3694 - do a base search on that DN for serverReference with
3695 extended-dn enabled
3696 - extract objectSID from resulting serverReference
3697 attribute
3698 - check this sid matches the sid argument
3699 */
3700 struct ldb_dn *config_dn;
3701 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
3702 struct ldb_message *msg;
3703 const char *attrs1[] = { NULL };
3704 const char *attrs2[] = { "serverReference", NULL };
3705 int ret;
3706 struct ldb_dn *dn, *account_dn;
3707 struct dom_sid sid2;
3708 NTSTATUS status;
3709
3710 config_dn = ldb_get_config_basedn(ldb);
3711
3712 ret = dsdb_search_one(ldb, tmp_ctx, &msg, config_dn, LDB_SCOPE_SUBTREE,
3713 attrs1, 0, "(&(objectGUID=%s)(objectClass=nTDSDSA))", GUID_string(tmp_ctx, dsa_guid));
3714 if (ret != LDB_SUCCESS) {
3715 DEBUG(1,(__location__ ": Failed to find DSA objectGUID %s for sid %s\n",
3716 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3717 talloc_free(tmp_ctx);
3718 return LDB_ERR_OPERATIONS_ERROR;
3719 }
3720 dn = msg->dn;
3721
3722 if (!ldb_dn_remove_child_components(dn, 1)) {
3723 talloc_free(tmp_ctx);
3724 return LDB_ERR_OPERATIONS_ERROR;
3725 }
3726
3727 ret = dsdb_search_one(ldb, tmp_ctx, &msg, dn, LDB_SCOPE_BASE,
3728 attrs2, DSDB_SEARCH_SHOW_EXTENDED_DN,
3729 "(objectClass=server)");
3730 if (ret != LDB_SUCCESS) {
3731 DEBUG(1,(__location__ ": Failed to find server record for DSA with objectGUID %s, sid %s\n",
3732 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3733 talloc_free(tmp_ctx);
3734 return LDB_ERR_OPERATIONS_ERROR;
3735 }
3736
3737 account_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, msg, "serverReference");
3738 if (account_dn == NULL) {
3739 DEBUG(1,(__location__ ": Failed to find account_dn for DSA with objectGUID %s, sid %s\n",
3740 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3741 talloc_free(tmp_ctx);
3742 return LDB_ERR_OPERATIONS_ERROR;
3743 }
3744
3745 status = dsdb_get_extended_dn_sid(account_dn, &sid2, "SID");
3746 if (!NT_STATUS_IS_OK(status)) {
3747 DEBUG(1,(__location__ ": Failed to find SID for DSA with objectGUID %s, sid %s\n",
3748 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3749 talloc_free(tmp_ctx);
3750 return LDB_ERR_OPERATIONS_ERROR;
3751 }
3752
3753 if (!dom_sid_equal(sid, &sid2)) {
3754 /* someone is trying to spoof another account */
3755 DEBUG(0,(__location__ ": Bad DSA objectGUID %s for sid %s - expected sid %s\n",
3756 GUID_string(tmp_ctx, dsa_guid),
3757 dom_sid_string(tmp_ctx, sid),
3758 dom_sid_string(tmp_ctx, &sid2)));
3759 talloc_free(tmp_ctx);
3760 return LDB_ERR_OPERATIONS_ERROR;
3761 }
3762
3763 talloc_free(tmp_ctx);
3764 return LDB_SUCCESS;
3765 }
3766
3767 const char *rodc_fas_list[] = {"ms-PKI-DPAPIMasterKeys",
3768 "ms-PKI-AccountCredentials",
3769 "ms-PKI-RoamingTimeStamp",
3770 "ms-FVE-KeyPackage",
3771 "ms-FVE-RecoveryGuid",
3772 "ms-FVE-RecoveryInformation",
3773 "ms-FVE-RecoveryPassword",
3774 "ms-FVE-VolumeGuid",
3775 "ms-TPM-OwnerInformation",
3776 NULL};
3777 /*
3778 check if the attribute belongs to the RODC filtered attribute set
3779 */
3780 bool dsdb_attr_in_rodc_fas(uint32_t replica_flags, const struct dsdb_attribute *sa)
3781 {
3782 int rodc_filtered_flags = SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL;
3783 bool drs_write_replica = ((replica_flags & DRSUAPI_DRS_WRIT_REP) == 0);
3784
3785 if (drs_write_replica && (sa->searchFlags & rodc_filtered_flags)) {
3786 return true;
3787 }
3788 if (drs_write_replica && is_attr_in_list(rodc_fas_list, sa->cn)) {
3789 return true;
3790 }
3791 return false;
3792 }