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s4:samdb_set_password - adapt it for the user password change handling
[Samba/ekacnet.git] / source4 / dsdb / common / util.c
blob5deb1d08b156c605f861d1f9bb42dec53c9a77f6
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, NULL, 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 const int units_per_week = 168;
634 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
635 ZERO_STRUCT(hours);
636 hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week);
637 if (!hours.bits) {
638 return hours;
639 }
640 hours.units_per_week = units_per_week;
641 memset(hours.bits, 0xFF, units_per_week);
642 if (val) {
643 memcpy(hours.bits, val->data, MIN(val->length, units_per_week));
644 }
645 return hours;
646 }
647
648 /*
649 pull a set of account_flags from a result set.
650
651 This requires that the attributes:
652 pwdLastSet
653 userAccountControl
654 be included in 'msg'
655 */
656 uint32_t samdb_result_acct_flags(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
657 struct ldb_message *msg, struct ldb_dn *domain_dn)
658 {
659 uint32_t userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
660 uint32_t acct_flags = ds_uf2acb(userAccountControl);
661 NTTIME must_change_time;
662 NTTIME now;
663
664 must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
665 domain_dn, msg);
666
667 /* Test account expire time */
668 unix_to_nt_time(&now, time(NULL));
669 /* check for expired password */
670 if (must_change_time < now) {
671 acct_flags |= ACB_PW_EXPIRED;
672 }
673 return acct_flags;
674 }
675
676 struct lsa_BinaryString samdb_result_parameters(TALLOC_CTX *mem_ctx,
677 struct ldb_message *msg,
678 const char *attr)
679 {
680 struct lsa_BinaryString s;
681 const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
682
683 ZERO_STRUCT(s);
684
685 if (!val) {
686 return s;
687 }
688
689 s.array = talloc_array(mem_ctx, uint16_t, val->length/2);
690 if (!s.array) {
691 return s;
692 }
693 s.length = s.size = val->length;
694 memcpy(s.array, val->data, val->length);
695
696 return s;
697 }
698
699 /* Find an attribute, with a particular value */
700
701 /* The current callers of this function expect a very specific
702 * behaviour: In particular, objectClass subclass equivilance is not
703 * wanted. This means that we should not lookup the schema for the
704 * comparison function */
705 struct ldb_message_element *samdb_find_attribute(struct ldb_context *ldb,
706 const struct ldb_message *msg,
707 const char *name, const char *value)
708 {
709 unsigned int i;
710 struct ldb_message_element *el = ldb_msg_find_element(msg, name);
711
712 if (!el) {
713 return NULL;
714 }
715
716 for (i=0;i<el->num_values;i++) {
717 if (ldb_attr_cmp(value, (char *)el->values[i].data) == 0) {
718 return el;
719 }
720 }
721
722 return NULL;
723 }
724
725 /*
726 * This is intended for use by the "password hash" module since there
727 * password changes can be specified through one message element with the
728 * new password (to set) and another one with the old password (to unset).
729 *
730 * The first which sets a password (new value) can have flags
731 * (LDB_FLAG_MOD_ADD, LDB_FLAG_MOD_REPLACE) but also none (on "add" operations
732 * for entries). The latter (old value) has always specified
733 * LDB_FLAG_MOD_DELETE.
734 *
735 * Returns LDB_ERR_NO_SUCH_ATTRIBUTE if the attribute which should be deleted
736 * doesn't contain only one value (this is the Windows Server behaviour)
737 * otherwise LDB_SUCCESS.
738 */
739 int samdb_msg_find_old_and_new_ldb_val(const struct ldb_message *msg,
740 const char *name,
741 const struct ldb_val **new_val,
742 const struct ldb_val **old_val)
743 {
744 unsigned int i;
745
746 *new_val = NULL;
747 *old_val = NULL;
748
749 if (msg == NULL) {
750 return LDB_SUCCESS;
751 }
752
753 for (i = 0; i < msg->num_elements; i++) {
754 if (ldb_attr_cmp(msg->elements[i].name, name) == 0) {
755 if (msg->elements[i].flags == LDB_FLAG_MOD_DELETE) {
756 *old_val = &msg->elements[i].values[0];
757 } else {
758 *new_val = &msg->elements[i].values[0];
759 }
760 }
761 }
762
763 return LDB_SUCCESS;
764 }
765
766 int samdb_find_or_add_value(struct ldb_context *ldb, struct ldb_message *msg, const char *name, const char *set_value)
767 {
768 if (samdb_find_attribute(ldb, msg, name, set_value) == NULL) {
769 return samdb_msg_add_string(ldb, msg, msg, name, set_value);
770 }
771 return LDB_SUCCESS;
772 }
773
774 int samdb_find_or_add_attribute(struct ldb_context *ldb, struct ldb_message *msg, const char *name, const char *set_value)
775 {
776 struct ldb_message_element *el;
777
778 el = ldb_msg_find_element(msg, name);
779 if (el) {
780 return LDB_SUCCESS;
781 }
782
783 return samdb_msg_add_string(ldb, msg, msg, name, set_value);
784 }
785
786
787
788 /*
789 add a string element to a message
790 */
791 int samdb_msg_add_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
792 const char *attr_name, const char *str)
793 {
794 char *s = talloc_strdup(mem_ctx, str);
795 char *a = talloc_strdup(mem_ctx, attr_name);
796 if (s == NULL || a == NULL) {
797 return LDB_ERR_OPERATIONS_ERROR;
798 }
799 return ldb_msg_add_string(msg, a, s);
800 }
801
802 /*
803 add a dom_sid element to a message
804 */
805 int samdb_msg_add_dom_sid(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
806 const char *attr_name, struct dom_sid *sid)
807 {
808 struct ldb_val v;
809 enum ndr_err_code ndr_err;
810
811 ndr_err = ndr_push_struct_blob(&v, mem_ctx,
812 lp_iconv_convenience(ldb_get_opaque(sam_ldb, "loadparm")),
813 sid,
814 (ndr_push_flags_fn_t)ndr_push_dom_sid);
815 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
816 return LDB_ERR_OPERATIONS_ERROR;
817 }
818 return ldb_msg_add_value(msg, attr_name, &v, NULL);
819 }
820
821
822 /*
823 add a delete element operation to a message
824 */
825 int samdb_msg_add_delete(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
826 const char *attr_name)
827 {
828 /* we use an empty replace rather than a delete, as it allows for
829 dsdb_replace() to be used everywhere */
830 return ldb_msg_add_empty(msg, attr_name, LDB_FLAG_MOD_REPLACE, NULL);
831 }
832
833 /*
834 add a add attribute value to a message
835 */
836 int samdb_msg_add_addval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
837 const char *attr_name, const char *value)
838 {
839 struct ldb_message_element *el;
840 char *a, *v;
841 int ret;
842 a = talloc_strdup(mem_ctx, attr_name);
843 if (a == NULL)
844 return LDB_ERR_OPERATIONS_ERROR;
845 v = talloc_strdup(mem_ctx, value);
846 if (v == NULL)
847 return LDB_ERR_OPERATIONS_ERROR;
848 ret = ldb_msg_add_string(msg, a, v);
849 if (ret != 0)
850 return ret;
851 el = ldb_msg_find_element(msg, a);
852 if (el == NULL)
853 return LDB_ERR_OPERATIONS_ERROR;
854 el->flags = LDB_FLAG_MOD_ADD;
855 return LDB_SUCCESS;
856 }
857
858 /*
859 add a delete attribute value to a message
860 */
861 int samdb_msg_add_delval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
862 const char *attr_name, const char *value)
863 {
864 struct ldb_message_element *el;
865 char *a, *v;
866 int ret;
867 a = talloc_strdup(mem_ctx, attr_name);
868 if (a == NULL)
869 return LDB_ERR_OPERATIONS_ERROR;
870 v = talloc_strdup(mem_ctx, value);
871 if (v == NULL)
872 return LDB_ERR_OPERATIONS_ERROR;
873 ret = ldb_msg_add_string(msg, a, v);
874 if (ret != 0)
875 return ret;
876 el = ldb_msg_find_element(msg, a);
877 if (el == NULL)
878 return LDB_ERR_OPERATIONS_ERROR;
879 el->flags = LDB_FLAG_MOD_DELETE;
880 return LDB_SUCCESS;
881 }
882
883 /*
884 add a int element to a message
885 */
886 int samdb_msg_add_int(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
887 const char *attr_name, int v)
888 {
889 const char *s = talloc_asprintf(mem_ctx, "%d", v);
890 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
891 }
892
893 /*
894 add a unsigned int element to a message
895 */
896 int samdb_msg_add_uint(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
897 const char *attr_name, unsigned int v)
898 {
899 return samdb_msg_add_int(sam_ldb, mem_ctx, msg, attr_name, (int)v);
900 }
901
902 /*
903 add a (signed) int64_t element to a message
904 */
905 int samdb_msg_add_int64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
906 const char *attr_name, int64_t v)
907 {
908 const char *s = talloc_asprintf(mem_ctx, "%lld", (long long)v);
909 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, s);
910 }
911
912 /*
913 add a uint64_t element to a message
914 */
915 int samdb_msg_add_uint64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
916 const char *attr_name, uint64_t v)
917 {
918 return samdb_msg_add_int64(sam_ldb, mem_ctx, msg, attr_name, (int64_t)v);
919 }
920
921 /*
922 add a samr_Password element to a message
923 */
924 int samdb_msg_add_hash(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
925 const char *attr_name, struct samr_Password *hash)
926 {
927 struct ldb_val val;
928 val.data = talloc_memdup(mem_ctx, hash->hash, 16);
929 if (!val.data) {
930 return LDB_ERR_OPERATIONS_ERROR;
931 }
932 val.length = 16;
933 return ldb_msg_add_value(msg, attr_name, &val, NULL);
934 }
935
936 /*
937 add a samr_Password array to a message
938 */
939 int samdb_msg_add_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
940 const char *attr_name, struct samr_Password *hashes,
941 unsigned int count)
942 {
943 struct ldb_val val;
944 unsigned int i;
945 val.data = talloc_array_size(mem_ctx, 16, count);
946 val.length = count*16;
947 if (!val.data) {
948 return LDB_ERR_OPERATIONS_ERROR;
949 }
950 for (i=0;i<count;i++) {
951 memcpy(i*16 + (char *)val.data, hashes[i].hash, 16);
952 }
953 return ldb_msg_add_value(msg, attr_name, &val, NULL);
954 }
955
956 /*
957 add a acct_flags element to a message
958 */
959 int samdb_msg_add_acct_flags(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
960 const char *attr_name, uint32_t v)
961 {
962 return samdb_msg_add_uint(sam_ldb, mem_ctx, msg, attr_name, ds_acb2uf(v));
963 }
964
965 /*
966 add a logon_hours element to a message
967 */
968 int samdb_msg_add_logon_hours(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
969 const char *attr_name, struct samr_LogonHours *hours)
970 {
971 struct ldb_val val;
972 val.length = hours->units_per_week / 8;
973 val.data = hours->bits;
974 return ldb_msg_add_value(msg, attr_name, &val, NULL);
975 }
976
977 /*
978 add a parameters element to a message
979 */
980 int samdb_msg_add_parameters(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
981 const char *attr_name, struct lsa_BinaryString *parameters)
982 {
983 struct ldb_val val;
984 val.length = parameters->length;
985 val.data = (uint8_t *)parameters->array;
986 return ldb_msg_add_value(msg, attr_name, &val, NULL);
987 }
988 /*
989 add a general value element to a message
990 */
991 int samdb_msg_add_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
992 const char *attr_name, const struct ldb_val *val)
993 {
994 return ldb_msg_add_value(msg, attr_name, val, NULL);
995 }
996
997 /*
998 sets a general value element to a message
999 */
1000 int samdb_msg_set_value(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
1001 const char *attr_name, const struct ldb_val *val)
1002 {
1003 struct ldb_message_element *el;
1004
1005 el = ldb_msg_find_element(msg, attr_name);
1006 if (el) {
1007 el->num_values = 0;
1008 }
1009 return ldb_msg_add_value(msg, attr_name, val, NULL);
1010 }
1011
1012 /*
1013 set a string element in a message
1014 */
1015 int samdb_msg_set_string(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
1016 const char *attr_name, const char *str)
1017 {
1018 struct ldb_message_element *el;
1019
1020 el = ldb_msg_find_element(msg, attr_name);
1021 if (el) {
1022 el->num_values = 0;
1023 }
1024 return samdb_msg_add_string(sam_ldb, mem_ctx, msg, attr_name, str);
1025 }
1026
1027 /*
1028 * Handle ldb_request in transaction
1029 */
1030 static int dsdb_autotransaction_request(struct ldb_context *sam_ldb,
1031 struct ldb_request *req)
1032 {
1033 int ret;
1034
1035 ret = ldb_transaction_start(sam_ldb);
1036 if (ret != LDB_SUCCESS) {
1037 return ret;
1038 }
1039
1040 ret = ldb_request(sam_ldb, req);
1041 if (ret == LDB_SUCCESS) {
1042 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
1043 }
1044
1045 if (ret == LDB_SUCCESS) {
1046 return ldb_transaction_commit(sam_ldb);
1047 }
1048 ldb_transaction_cancel(sam_ldb);
1049
1050 return ret;
1051 }
1052
1053 /*
1054 return a default security descriptor
1055 */
1056 struct security_descriptor *samdb_default_security_descriptor(TALLOC_CTX *mem_ctx)
1057 {
1058 struct security_descriptor *sd;
1059
1060 sd = security_descriptor_initialise(mem_ctx);
1061
1062 return sd;
1063 }
1064
1065 struct ldb_dn *samdb_aggregate_schema_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1066 {
1067 struct ldb_dn *schema_dn = ldb_get_schema_basedn(sam_ctx);
1068 struct ldb_dn *aggregate_dn;
1069 if (!schema_dn) {
1070 return NULL;
1071 }
1072
1073 aggregate_dn = ldb_dn_copy(mem_ctx, schema_dn);
1074 if (!aggregate_dn) {
1075 return NULL;
1076 }
1077 if (!ldb_dn_add_child_fmt(aggregate_dn, "CN=Aggregate")) {
1078 return NULL;
1079 }
1080 return aggregate_dn;
1081 }
1082
1083 struct ldb_dn *samdb_partitions_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1084 {
1085 struct ldb_dn *new_dn;
1086
1087 new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
1088 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Partitions")) {
1089 talloc_free(new_dn);
1090 return NULL;
1091 }
1092 return new_dn;
1093 }
1094
1095 struct ldb_dn *samdb_infrastructure_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1096 {
1097 struct ldb_dn *new_dn;
1098
1099 new_dn = ldb_dn_copy(mem_ctx, ldb_get_default_basedn(sam_ctx));
1100 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Infrastructure")) {
1101 talloc_free(new_dn);
1102 return NULL;
1103 }
1104 return new_dn;
1105 }
1106
1107 struct ldb_dn *samdb_sites_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
1108 {
1109 struct ldb_dn *new_dn;
1110
1111 new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
1112 if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Sites")) {
1113 talloc_free(new_dn);
1114 return NULL;
1115 }
1116 return new_dn;
1117 }
1118
1119 /*
1120 work out the domain sid for the current open ldb
1121 */
1122 const struct dom_sid *samdb_domain_sid(struct ldb_context *ldb)
1123 {
1124 TALLOC_CTX *tmp_ctx;
1125 const struct dom_sid *domain_sid;
1126 const char *attrs[] = {
1127 "objectSid",
1128 NULL
1129 };
1130 struct ldb_result *res;
1131 int ret;
1132
1133 /* see if we have a cached copy */
1134 domain_sid = (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
1135 if (domain_sid) {
1136 return domain_sid;
1137 }
1138
1139 tmp_ctx = talloc_new(ldb);
1140 if (tmp_ctx == NULL) {
1141 goto failed;
1142 }
1143
1144 ret = ldb_search(ldb, tmp_ctx, &res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, attrs, "objectSid=*");
1145
1146 if (ret != LDB_SUCCESS) {
1147 goto failed;
1148 }
1149
1150 if (res->count != 1) {
1151 goto failed;
1152 }
1153
1154 domain_sid = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSid");
1155 if (domain_sid == NULL) {
1156 goto failed;
1157 }
1158
1159 /* cache the domain_sid in the ldb */
1160 if (ldb_set_opaque(ldb, "cache.domain_sid", discard_const_p(struct dom_sid, domain_sid)) != LDB_SUCCESS) {
1161 goto failed;
1162 }
1163
1164 talloc_steal(ldb, domain_sid);
1165 talloc_free(tmp_ctx);
1166
1167 return domain_sid;
1168
1169 failed:
1170 talloc_free(tmp_ctx);
1171 return NULL;
1172 }
1173
1174 /*
1175 get domain sid from cache
1176 */
1177 const struct dom_sid *samdb_domain_sid_cache_only(struct ldb_context *ldb)
1178 {
1179 return (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
1180 }
1181
1182 bool samdb_set_domain_sid(struct ldb_context *ldb, const struct dom_sid *dom_sid_in)
1183 {
1184 TALLOC_CTX *tmp_ctx;
1185 struct dom_sid *dom_sid_new;
1186 struct dom_sid *dom_sid_old;
1187
1188 /* see if we have a cached copy */
1189 dom_sid_old = talloc_get_type(ldb_get_opaque(ldb,
1190 "cache.domain_sid"), struct dom_sid);
1191
1192 tmp_ctx = talloc_new(ldb);
1193 if (tmp_ctx == NULL) {
1194 goto failed;
1195 }
1196
1197 dom_sid_new = dom_sid_dup(tmp_ctx, dom_sid_in);
1198 if (!dom_sid_new) {
1199 goto failed;
1200 }
1201
1202 /* cache the domain_sid in the ldb */
1203 if (ldb_set_opaque(ldb, "cache.domain_sid", dom_sid_new) != LDB_SUCCESS) {
1204 goto failed;
1205 }
1206
1207 talloc_steal(ldb, dom_sid_new);
1208 talloc_free(tmp_ctx);
1209 talloc_free(dom_sid_old);
1210
1211 return true;
1212
1213 failed:
1214 DEBUG(1,("Failed to set our own cached domain SID in the ldb!\n"));
1215 talloc_free(tmp_ctx);
1216 return false;
1217 }
1218
1219 bool samdb_set_ntds_settings_dn(struct ldb_context *ldb, struct ldb_dn *ntds_settings_dn_in)
1220 {
1221 TALLOC_CTX *tmp_ctx;
1222 struct ldb_dn *ntds_settings_dn_new;
1223 struct ldb_dn *ntds_settings_dn_old;
1224
1225 /* see if we have a cached copy */
1226 ntds_settings_dn_old = talloc_get_type(ldb_get_opaque(ldb,
1227 "cache.ntds_settings_dn"), struct ldb_dn);
1228
1229 tmp_ctx = talloc_new(ldb);
1230 if (tmp_ctx == NULL) {
1231 goto failed;
1232 }
1233
1234 ntds_settings_dn_new = ldb_dn_copy(tmp_ctx, ntds_settings_dn_in);
1235 if (!ntds_settings_dn_new) {
1236 goto failed;
1237 }
1238
1239 /* cache the domain_sid in the ldb */
1240 if (ldb_set_opaque(ldb, "cache.ntds_settings_dn", ntds_settings_dn_new) != LDB_SUCCESS) {
1241 goto failed;
1242 }
1243
1244 talloc_steal(ldb, ntds_settings_dn_new);
1245 talloc_free(tmp_ctx);
1246 talloc_free(ntds_settings_dn_old);
1247
1248 return true;
1249
1250 failed:
1251 DEBUG(1,("Failed to set our NTDS Settings DN in the ldb!\n"));
1252 talloc_free(tmp_ctx);
1253 return false;
1254 }
1255
1256 /* Obtain the short name of the flexible single master operator
1257 * (FSMO), such as the PDC Emulator */
1258 const char *samdb_result_fsmo_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
1259 const char *attr)
1260 {
1261 /* Format is cn=NTDS Settings,cn=<NETBIOS name of FSMO>,.... */
1262 struct ldb_dn *fsmo_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, msg, attr);
1263 const struct ldb_val *val = ldb_dn_get_component_val(fsmo_dn, 1);
1264 const char *name = ldb_dn_get_component_name(fsmo_dn, 1);
1265
1266 if (!name || (ldb_attr_cmp(name, "cn") != 0)) {
1267 /* Ensure this matches the format. This gives us a
1268 * bit more confidence that a 'cn' value will be a
1269 * ascii string */
1270 return NULL;
1271 }
1272 if (val) {
1273 return (char *)val->data;
1274 }
1275 return NULL;
1276 }
1277
1278 /*
1279 work out the ntds settings dn for the current open ldb
1280 */
1281 struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb)
1282 {
1283 TALLOC_CTX *tmp_ctx;
1284 const char *root_attrs[] = { "dsServiceName", NULL };
1285 int ret;
1286 struct ldb_result *root_res;
1287 struct ldb_dn *settings_dn;
1288
1289 /* see if we have a cached copy */
1290 settings_dn = (struct ldb_dn *)ldb_get_opaque(ldb, "cache.ntds_settings_dn");
1291 if (settings_dn) {
1292 return settings_dn;
1293 }
1294
1295 tmp_ctx = talloc_new(ldb);
1296 if (tmp_ctx == NULL) {
1297 goto failed;
1298 }
1299
1300 ret = ldb_search(ldb, tmp_ctx, &root_res, ldb_dn_new(tmp_ctx, ldb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
1301 if (ret) {
1302 DEBUG(1,("Searching for dsServiceName in rootDSE failed: %s\n",
1303 ldb_errstring(ldb)));
1304 goto failed;
1305 }
1306
1307 if (root_res->count != 1) {
1308 goto failed;
1309 }
1310
1311 settings_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, root_res->msgs[0], "dsServiceName");
1312
1313 /* cache the domain_sid in the ldb */
1314 if (ldb_set_opaque(ldb, "cache.settings_dn", settings_dn) != LDB_SUCCESS) {
1315 goto failed;
1316 }
1317
1318 talloc_steal(ldb, settings_dn);
1319 talloc_free(tmp_ctx);
1320
1321 return settings_dn;
1322
1323 failed:
1324 DEBUG(1,("Failed to find our own NTDS Settings DN in the ldb!\n"));
1325 talloc_free(tmp_ctx);
1326 return NULL;
1327 }
1328
1329 /*
1330 work out the ntds settings invocationId for the current open ldb
1331 */
1332 const struct GUID *samdb_ntds_invocation_id(struct ldb_context *ldb)
1333 {
1334 TALLOC_CTX *tmp_ctx;
1335 const char *attrs[] = { "invocationId", NULL };
1336 int ret;
1337 struct ldb_result *res;
1338 struct GUID *invocation_id;
1339
1340 /* see if we have a cached copy */
1341 invocation_id = (struct GUID *)ldb_get_opaque(ldb, "cache.invocation_id");
1342 if (invocation_id) {
1343 return invocation_id;
1344 }
1345
1346 tmp_ctx = talloc_new(ldb);
1347 if (tmp_ctx == NULL) {
1348 goto failed;
1349 }
1350
1351 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1352 if (ret) {
1353 goto failed;
1354 }
1355
1356 if (res->count != 1) {
1357 goto failed;
1358 }
1359
1360 invocation_id = talloc(tmp_ctx, struct GUID);
1361 if (!invocation_id) {
1362 goto failed;
1363 }
1364
1365 *invocation_id = samdb_result_guid(res->msgs[0], "invocationId");
1366
1367 /* cache the domain_sid in the ldb */
1368 if (ldb_set_opaque(ldb, "cache.invocation_id", invocation_id) != LDB_SUCCESS) {
1369 goto failed;
1370 }
1371
1372 talloc_steal(ldb, invocation_id);
1373 talloc_free(tmp_ctx);
1374
1375 return invocation_id;
1376
1377 failed:
1378 DEBUG(1,("Failed to find our own NTDS Settings invocationId in the ldb!\n"));
1379 talloc_free(tmp_ctx);
1380 return NULL;
1381 }
1382
1383 bool samdb_set_ntds_invocation_id(struct ldb_context *ldb, const struct GUID *invocation_id_in)
1384 {
1385 TALLOC_CTX *tmp_ctx;
1386 struct GUID *invocation_id_new;
1387 struct GUID *invocation_id_old;
1388
1389 /* see if we have a cached copy */
1390 invocation_id_old = (struct GUID *)ldb_get_opaque(ldb,
1391 "cache.invocation_id");
1392
1393 tmp_ctx = talloc_new(ldb);
1394 if (tmp_ctx == NULL) {
1395 goto failed;
1396 }
1397
1398 invocation_id_new = talloc(tmp_ctx, struct GUID);
1399 if (!invocation_id_new) {
1400 goto failed;
1401 }
1402
1403 *invocation_id_new = *invocation_id_in;
1404
1405 /* cache the domain_sid in the ldb */
1406 if (ldb_set_opaque(ldb, "cache.invocation_id", invocation_id_new) != LDB_SUCCESS) {
1407 goto failed;
1408 }
1409
1410 talloc_steal(ldb, invocation_id_new);
1411 talloc_free(tmp_ctx);
1412 talloc_free(invocation_id_old);
1413
1414 return true;
1415
1416 failed:
1417 DEBUG(1,("Failed to set our own cached invocationId in the ldb!\n"));
1418 talloc_free(tmp_ctx);
1419 return false;
1420 }
1421
1422 /*
1423 work out the ntds settings objectGUID for the current open ldb
1424 */
1425 const struct GUID *samdb_ntds_objectGUID(struct ldb_context *ldb)
1426 {
1427 TALLOC_CTX *tmp_ctx;
1428 const char *attrs[] = { "objectGUID", NULL };
1429 int ret;
1430 struct ldb_result *res;
1431 struct GUID *ntds_guid;
1432
1433 /* see if we have a cached copy */
1434 ntds_guid = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
1435 if (ntds_guid) {
1436 return ntds_guid;
1437 }
1438
1439 tmp_ctx = talloc_new(ldb);
1440 if (tmp_ctx == NULL) {
1441 goto failed;
1442 }
1443
1444 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1445 if (ret) {
1446 goto failed;
1447 }
1448
1449 if (res->count != 1) {
1450 goto failed;
1451 }
1452
1453 ntds_guid = talloc(tmp_ctx, struct GUID);
1454 if (!ntds_guid) {
1455 goto failed;
1456 }
1457
1458 *ntds_guid = samdb_result_guid(res->msgs[0], "objectGUID");
1459
1460 /* cache the domain_sid in the ldb */
1461 if (ldb_set_opaque(ldb, "cache.ntds_guid", ntds_guid) != LDB_SUCCESS) {
1462 goto failed;
1463 }
1464
1465 talloc_steal(ldb, ntds_guid);
1466 talloc_free(tmp_ctx);
1467
1468 return ntds_guid;
1469
1470 failed:
1471 DEBUG(1,("Failed to find our own NTDS Settings objectGUID in the ldb!\n"));
1472 talloc_free(tmp_ctx);
1473 return NULL;
1474 }
1475
1476 bool samdb_set_ntds_objectGUID(struct ldb_context *ldb, const struct GUID *ntds_guid_in)
1477 {
1478 TALLOC_CTX *tmp_ctx;
1479 struct GUID *ntds_guid_new;
1480 struct GUID *ntds_guid_old;
1481
1482 /* see if we have a cached copy */
1483 ntds_guid_old = (struct GUID *)ldb_get_opaque(ldb, "cache.ntds_guid");
1484
1485 tmp_ctx = talloc_new(ldb);
1486 if (tmp_ctx == NULL) {
1487 goto failed;
1488 }
1489
1490 ntds_guid_new = talloc(tmp_ctx, struct GUID);
1491 if (!ntds_guid_new) {
1492 goto failed;
1493 }
1494
1495 *ntds_guid_new = *ntds_guid_in;
1496
1497 /* cache the domain_sid in the ldb */
1498 if (ldb_set_opaque(ldb, "cache.ntds_guid", ntds_guid_new) != LDB_SUCCESS) {
1499 goto failed;
1500 }
1501
1502 talloc_steal(ldb, ntds_guid_new);
1503 talloc_free(tmp_ctx);
1504 talloc_free(ntds_guid_old);
1505
1506 return true;
1507
1508 failed:
1509 DEBUG(1,("Failed to set our own cached invocationId in the ldb!\n"));
1510 talloc_free(tmp_ctx);
1511 return false;
1512 }
1513
1514 /*
1515 work out the server dn for the current open ldb
1516 */
1517 struct ldb_dn *samdb_server_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1518 {
1519 return ldb_dn_get_parent(mem_ctx, samdb_ntds_settings_dn(ldb));
1520 }
1521
1522 /*
1523 work out the server dn for the current open ldb
1524 */
1525 struct ldb_dn *samdb_server_site_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1526 {
1527 struct ldb_dn *server_dn;
1528 struct ldb_dn *servers_dn;
1529 struct ldb_dn *server_site_dn;
1530
1531 /* TODO: there must be a saner way to do this!! */
1532 server_dn = samdb_server_dn(ldb, mem_ctx);
1533 if (!server_dn) return NULL;
1534
1535 servers_dn = ldb_dn_get_parent(mem_ctx, server_dn);
1536 talloc_free(server_dn);
1537 if (!servers_dn) return NULL;
1538
1539 server_site_dn = ldb_dn_get_parent(mem_ctx, servers_dn);
1540 talloc_free(servers_dn);
1541
1542 return server_site_dn;
1543 }
1544
1545 /*
1546 find a 'reference' DN that points at another object
1547 (eg. serverReference, rIDManagerReference etc)
1548 */
1549 int samdb_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *base,
1550 const char *attribute, struct ldb_dn **dn)
1551 {
1552 const char *attrs[2];
1553 struct ldb_result *res;
1554 int ret;
1555
1556 attrs[0] = attribute;
1557 attrs[1] = NULL;
1558
1559 ret = ldb_search(ldb, mem_ctx, &res, base, LDB_SCOPE_BASE, attrs, NULL);
1560 if (ret != LDB_SUCCESS) {
1561 return ret;
1562 }
1563 if (res->count != 1) {
1564 talloc_free(res);
1565 return LDB_ERR_NO_SUCH_OBJECT;
1566 }
1567
1568 *dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, res->msgs[0], attribute);
1569 if (!*dn) {
1570 talloc_free(res);
1571 return LDB_ERR_NO_SUCH_ATTRIBUTE;
1572 }
1573
1574 talloc_free(res);
1575 return LDB_SUCCESS;
1576 }
1577
1578 /*
1579 find our machine account via the serverReference attribute in the
1580 server DN
1581 */
1582 int samdb_server_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1583 {
1584 struct ldb_dn *server_dn;
1585 int ret;
1586
1587 server_dn = samdb_server_dn(ldb, mem_ctx);
1588 if (server_dn == NULL) {
1589 return LDB_ERR_NO_SUCH_OBJECT;
1590 }
1591
1592 ret = samdb_reference_dn(ldb, mem_ctx, server_dn, "serverReference", dn);
1593 talloc_free(server_dn);
1594
1595 return ret;
1596 }
1597
1598 /*
1599 find the RID Manager$ DN via the rIDManagerReference attribute in the
1600 base DN
1601 */
1602 int samdb_rid_manager_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1603 {
1604 return samdb_reference_dn(ldb, mem_ctx, ldb_get_default_basedn(ldb),
1605 "rIDManagerReference", dn);
1606 }
1607
1608 /*
1609 find the RID Set DN via the rIDSetReferences attribute in our
1610 machine account DN
1611 */
1612 int samdb_rid_set_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
1613 {
1614 struct ldb_dn *server_ref_dn;
1615 int ret;
1616
1617 ret = samdb_server_reference_dn(ldb, mem_ctx, &server_ref_dn);
1618 if (ret != LDB_SUCCESS) {
1619 return ret;
1620 }
1621 ret = samdb_reference_dn(ldb, mem_ctx, server_ref_dn, "rIDSetReferences", dn);
1622 talloc_free(server_ref_dn);
1623 return ret;
1624 }
1625
1626 const char *samdb_server_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
1627 {
1628 const struct ldb_val *val = ldb_dn_get_rdn_val(samdb_server_site_dn(ldb,
1629 mem_ctx));
1630
1631 if (val == NULL) {
1632 return NULL;
1633 }
1634
1635 return (const char *) val->data;
1636 }
1637
1638 /*
1639 * Finds the client site by using the client's IP address.
1640 * The "subnet_name" returns the name of the subnet if parameter != NULL
1641 */
1642 const char *samdb_client_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1643 const char *ip_address, char **subnet_name)
1644 {
1645 const char *attrs[] = { "cn", "siteObject", NULL };
1646 struct ldb_dn *sites_container_dn, *subnets_dn, *sites_dn;
1647 struct ldb_result *res;
1648 const struct ldb_val *val;
1649 const char *site_name = NULL, *l_subnet_name = NULL;
1650 const char *allow_list[2] = { NULL, NULL };
1651 unsigned int i, count;
1652 int cnt, ret;
1653
1654 /*
1655 * if we don't have a client ip e.g. ncalrpc
1656 * the server site is the client site
1657 */
1658 if (ip_address == NULL) {
1659 return samdb_server_site_name(ldb, mem_ctx);
1660 }
1661
1662 sites_container_dn = samdb_sites_dn(ldb, mem_ctx);
1663 if (sites_container_dn == NULL) {
1664 return NULL;
1665 }
1666
1667 subnets_dn = ldb_dn_copy(mem_ctx, sites_container_dn);
1668 if ( ! ldb_dn_add_child_fmt(subnets_dn, "CN=Subnets")) {
1669 talloc_free(sites_container_dn);
1670 talloc_free(subnets_dn);
1671 return NULL;
1672 }
1673
1674 ret = ldb_search(ldb, mem_ctx, &res, subnets_dn, LDB_SCOPE_ONELEVEL,
1675 attrs, NULL);
1676 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
1677 count = 0;
1678 } else if (ret != LDB_SUCCESS) {
1679 talloc_free(sites_container_dn);
1680 talloc_free(subnets_dn);
1681 return NULL;
1682 } else {
1683 count = res->count;
1684 }
1685
1686 for (i = 0; i < count; i++) {
1687 l_subnet_name = ldb_msg_find_attr_as_string(res->msgs[i], "cn",
1688 NULL);
1689
1690 allow_list[0] = l_subnet_name;
1691
1692 if (allow_access(mem_ctx, NULL, allow_list, "", ip_address)) {
1693 sites_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx,
1694 res->msgs[i],
1695 "siteObject");
1696 if (sites_dn == NULL) {
1697 /* No reference, maybe another subnet matches */
1698 continue;
1699 }
1700
1701 /* "val" cannot be NULL here since "sites_dn" != NULL */
1702 val = ldb_dn_get_rdn_val(sites_dn);
1703 site_name = talloc_strdup(mem_ctx,
1704 (const char *) val->data);
1705
1706 talloc_free(sites_dn);
1707
1708 break;
1709 }
1710 }
1711
1712 if (site_name == NULL) {
1713 /* This is the Windows Server fallback rule: when no subnet
1714 * exists and we have only one site available then use it (it
1715 * is for sure the same as our server site). If more sites do
1716 * exist then we don't know which one to use and set the site
1717 * name to "". */
1718 cnt = samdb_search_count(ldb, sites_container_dn,
1719 "(objectClass=site)");
1720 if (cnt == 1) {
1721 site_name = samdb_server_site_name(ldb, mem_ctx);
1722 } else {
1723 site_name = talloc_strdup(mem_ctx, "");
1724 }
1725 l_subnet_name = NULL;
1726 }
1727
1728 if (subnet_name != NULL) {
1729 *subnet_name = talloc_strdup(mem_ctx, l_subnet_name);
1730 }
1731
1732 talloc_free(sites_container_dn);
1733 talloc_free(subnets_dn);
1734 talloc_free(res);
1735
1736 return site_name;
1737 }
1738
1739 /*
1740 work out if we are the PDC for the domain of the current open ldb
1741 */
1742 bool samdb_is_pdc(struct ldb_context *ldb)
1743 {
1744 const char *dom_attrs[] = { "fSMORoleOwner", NULL };
1745 int ret;
1746 struct ldb_result *dom_res;
1747 TALLOC_CTX *tmp_ctx;
1748 bool is_pdc;
1749 struct ldb_dn *pdc;
1750
1751 tmp_ctx = talloc_new(ldb);
1752 if (tmp_ctx == NULL) {
1753 DEBUG(1, ("talloc_new failed in samdb_is_pdc"));
1754 return false;
1755 }
1756
1757 ret = ldb_search(ldb, tmp_ctx, &dom_res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, dom_attrs, NULL);
1758 if (ret) {
1759 DEBUG(1,("Searching for fSMORoleOwner in %s failed: %s\n",
1760 ldb_dn_get_linearized(ldb_get_default_basedn(ldb)),
1761 ldb_errstring(ldb)));
1762 goto failed;
1763 }
1764 if (dom_res->count != 1) {
1765 goto failed;
1766 }
1767
1768 pdc = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, dom_res->msgs[0], "fSMORoleOwner");
1769
1770 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), pdc) == 0) {
1771 is_pdc = true;
1772 } else {
1773 is_pdc = false;
1774 }
1775
1776 talloc_free(tmp_ctx);
1777
1778 return is_pdc;
1779
1780 failed:
1781 DEBUG(1,("Failed to find if we are the PDC for this ldb\n"));
1782 talloc_free(tmp_ctx);
1783 return false;
1784 }
1785
1786 /*
1787 work out if we are a Global Catalog server for the domain of the current open ldb
1788 */
1789 bool samdb_is_gc(struct ldb_context *ldb)
1790 {
1791 const char *attrs[] = { "options", NULL };
1792 int ret, options;
1793 struct ldb_result *res;
1794 TALLOC_CTX *tmp_ctx;
1795
1796 tmp_ctx = talloc_new(ldb);
1797 if (tmp_ctx == NULL) {
1798 DEBUG(1, ("talloc_new failed in samdb_is_pdc"));
1799 return false;
1800 }
1801
1802 /* Query cn=ntds settings,.... */
1803 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
1804 if (ret) {
1805 talloc_free(tmp_ctx);
1806 return false;
1807 }
1808 if (res->count != 1) {
1809 talloc_free(tmp_ctx);
1810 return false;
1811 }
1812
1813 options = ldb_msg_find_attr_as_int(res->msgs[0], "options", 0);
1814 talloc_free(tmp_ctx);
1815
1816 /* if options attribute has the 0x00000001 flag set, then enable the global catlog */
1817 if (options & 0x000000001) {
1818 return true;
1819 }
1820 return false;
1821 }
1822
1823 /* Find a domain object in the parents of a particular DN. */
1824 int samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
1825 struct ldb_dn **parent_dn, const char **errstring)
1826 {
1827 TALLOC_CTX *local_ctx;
1828 struct ldb_dn *sdn = dn;
1829 struct ldb_result *res = NULL;
1830 int ret = 0;
1831 const char *attrs[] = { NULL };
1832
1833 local_ctx = talloc_new(mem_ctx);
1834 if (local_ctx == NULL) return LDB_ERR_OPERATIONS_ERROR;
1835
1836 while ((sdn = ldb_dn_get_parent(local_ctx, sdn))) {
1837 ret = ldb_search(ldb, local_ctx, &res, sdn, LDB_SCOPE_BASE, attrs,
1838 "(|(objectClass=domain)(objectClass=builtinDomain))");
1839 if (ret == LDB_SUCCESS) {
1840 if (res->count == 1) {
1841 break;
1842 }
1843 } else {
1844 break;
1845 }
1846 }
1847
1848 if (ret != LDB_SUCCESS) {
1849 *errstring = talloc_asprintf(mem_ctx, "Error searching for parent domain of %s, failed searching for %s: %s",
1850 ldb_dn_get_linearized(dn),
1851 ldb_dn_get_linearized(sdn),
1852 ldb_errstring(ldb));
1853 talloc_free(local_ctx);
1854 return ret;
1855 }
1856 if (res->count != 1) {
1857 *errstring = talloc_asprintf(mem_ctx, "Invalid dn (%s), not child of a domain object",
1858 ldb_dn_get_linearized(dn));
1859 DEBUG(0,(__location__ ": %s\n", *errstring));
1860 talloc_free(local_ctx);
1861 return LDB_ERR_CONSTRAINT_VIOLATION;
1862 }
1863
1864 *parent_dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
1865 talloc_free(local_ctx);
1866 return ret;
1867 }
1868
1869
1870 /*
1871 * Performs checks on a user password (plaintext UNIX format - attribute
1872 * "password"). The remaining parameters have to be extracted from the domain
1873 * object in the AD.
1874 *
1875 * Result codes from "enum samr_ValidationStatus" (consider "samr.idl")
1876 */
1877 enum samr_ValidationStatus samdb_check_password(const DATA_BLOB *password,
1878 const uint32_t pwdProperties,
1879 const uint32_t minPwdLength)
1880 {
1881 /* checks if the "minPwdLength" property is satisfied */
1882 if (minPwdLength > password->length)
1883 return SAMR_VALIDATION_STATUS_PWD_TOO_SHORT;
1884
1885 /* checks the password complexity */
1886 if (((pwdProperties & DOMAIN_PASSWORD_COMPLEX) != 0)
1887 && (password->data != NULL)
1888 && (!check_password_quality((const char *) password->data)))
1889 return SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH;
1890
1891 return SAMR_VALIDATION_STATUS_SUCCESS;
1892 }
1893
1894 /*
1895 * Callback for "samdb_set_password" password change
1896 */
1897 int samdb_set_password_callback(struct ldb_request *req, struct ldb_reply *ares)
1898 {
1899 int ret;
1900
1901 if (!ares) {
1902 return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
1903 }
1904
1905 if (ares->error != LDB_SUCCESS) {
1906 ret = ares->error;
1907 req->context = talloc_steal(req,
1908 ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
1909 talloc_free(ares);
1910 return ldb_request_done(req, ret);
1911 }
1912
1913 if (ares->type != LDB_REPLY_DONE) {
1914 talloc_free(ares);
1915 return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
1916 }
1917
1918 req->context = talloc_steal(req,
1919 ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
1920 talloc_free(ares);
1921 return ldb_request_done(req, LDB_SUCCESS);
1922 }
1923
1924 /*
1925 * Sets the user password using plaintext UTF16 (attribute "new_password") or
1926 * LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
1927 * as parameter if it's a user change or not ("userChange"). The "rejectReason"
1928 * gives some more informations if the changed failed.
1929 *
1930 * Results: NT_STATUS_OK, NT_STATUS_INTERNAL_DB_CORRUPTION,
1931 * NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
1932 * NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION
1933 */
1934 NTSTATUS samdb_set_password(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
1935 struct ldb_dn *user_dn, struct ldb_dn *domain_dn,
1936 const DATA_BLOB *new_password,
1937 struct samr_Password *lmNewHash,
1938 struct samr_Password *ntNewHash,
1939 bool user_change,
1940 enum samPwdChangeReason *reject_reason,
1941 struct samr_DomInfo1 **_dominfo)
1942 {
1943 struct ldb_message *msg;
1944 struct ldb_message_element *el;
1945 struct ldb_request *req;
1946 struct dsdb_control_password_change_status *pwd_stat = NULL;
1947 int ret;
1948 NTSTATUS status;
1949
1950 #define CHECK_RET(x) \
1951 if (x != LDB_SUCCESS) { \
1952 talloc_free(msg); \
1953 return NT_STATUS_NO_MEMORY; \
1954 }
1955
1956 msg = ldb_msg_new(mem_ctx);
1957 if (msg == NULL) {
1958 return NT_STATUS_NO_MEMORY;
1959 }
1960 msg->dn = user_dn;
1961 if ((new_password != NULL)
1962 && ((lmNewHash == NULL) && (ntNewHash == NULL))) {
1963 /* we have the password as plaintext UTF16 */
1964 CHECK_RET(samdb_msg_add_value(ldb, mem_ctx, msg,
1965 "clearTextPassword", new_password));
1966 el = ldb_msg_find_element(msg, "clearTextPassword");
1967 el->flags = LDB_FLAG_MOD_REPLACE;
1968 } else if ((new_password == NULL)
1969 && ((lmNewHash != NULL) || (ntNewHash != NULL))) {
1970 /* we have a password as LM and/or NT hash */
1971 if (lmNewHash != NULL) {
1972 CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
1973 "dBCSPwd", lmNewHash));
1974 el = ldb_msg_find_element(msg, "dBCSPwd");
1975 el->flags = LDB_FLAG_MOD_REPLACE;
1976 }
1977 if (ntNewHash != NULL) {
1978 CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
1979 "unicodePwd", ntNewHash));
1980 el = ldb_msg_find_element(msg, "unicodePwd");
1981 el->flags = LDB_FLAG_MOD_REPLACE;
1982 }
1983 } else {
1984 /* the password wasn't specified correctly */
1985 talloc_free(msg);
1986 return NT_STATUS_INVALID_PARAMETER;
1987 }
1988
1989 /* build modify request */
1990 ret = ldb_build_mod_req(&req, ldb, mem_ctx, msg, NULL, NULL,
1991 samdb_set_password_callback, NULL);
1992 if (ret != LDB_SUCCESS) {
1993 talloc_free(msg);
1994 return NT_STATUS_NO_MEMORY;
1995 }
1996
1997 if (user_change) {
1998 /* a user password change and we've checked already the old
1999 * password somewhere else (callers responsability) */
2000 ret = ldb_request_add_control(req,
2001 DSDB_CONTROL_PASSWORD_CHANGE_OLD_PW_CHECKED_OID,
2002 true, NULL);
2003 if (ret != LDB_SUCCESS) {
2004 talloc_free(req);
2005 talloc_free(msg);
2006 return NT_STATUS_NO_MEMORY;
2007 }
2008 }
2009 ret = ldb_request_add_control(req,
2010 DSDB_CONTROL_PASSWORD_HASH_VALUES_OID,
2011 true, NULL);
2012 if (ret != LDB_SUCCESS) {
2013 talloc_free(req);
2014 talloc_free(msg);
2015 return NT_STATUS_NO_MEMORY;
2016 }
2017 ret = ldb_request_add_control(req,
2018 DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID,
2019 true, NULL);
2020 if (ret != LDB_SUCCESS) {
2021 talloc_free(req);
2022 talloc_free(msg);
2023 return NT_STATUS_NO_MEMORY;
2024 }
2025
2026 ret = dsdb_autotransaction_request(ldb, req);
2027
2028 if (req->context != NULL) {
2029 pwd_stat = talloc_steal(mem_ctx,
2030 ((struct ldb_control *)req->context)->data);
2031 }
2032
2033 talloc_free(req);
2034 talloc_free(msg);
2035
2036 /* Sets the domain info (if requested) */
2037 if (_dominfo != NULL) {
2038 struct samr_DomInfo1 *dominfo;
2039
2040 dominfo = talloc_zero(mem_ctx, struct samr_DomInfo1);
2041 if (dominfo == NULL) {
2042 return NT_STATUS_NO_MEMORY;
2043 }
2044
2045 if (pwd_stat != NULL) {
2046 dominfo->min_password_length = pwd_stat->domain_data.minPwdLength;
2047 dominfo->password_properties = pwd_stat->domain_data.pwdProperties;
2048 dominfo->password_history_length = pwd_stat->domain_data.pwdHistoryLength;
2049 dominfo->max_password_age = pwd_stat->domain_data.maxPwdAge;
2050 dominfo->min_password_age = pwd_stat->domain_data.minPwdAge;
2051 }
2052
2053 *_dominfo = dominfo;
2054 }
2055
2056 if (reject_reason != NULL) {
2057 if (pwd_stat != NULL) {
2058 *reject_reason = pwd_stat->reject_reason;
2059 } else {
2060 *reject_reason = SAM_PWD_CHANGE_NO_ERROR;
2061 }
2062 }
2063
2064 if (pwd_stat != NULL) {
2065 talloc_free(pwd_stat);
2066 }
2067
2068 /* TODO: Error results taken from "password_hash" module. Are they
2069 correct? */
2070 if (ret == LDB_ERR_UNWILLING_TO_PERFORM) {
2071 status = NT_STATUS_WRONG_PASSWORD;
2072 } else if (ret == LDB_ERR_CONSTRAINT_VIOLATION) {
2073 status = NT_STATUS_PASSWORD_RESTRICTION;
2074 } else if (ret != LDB_SUCCESS) {
2075 status = NT_STATUS_UNSUCCESSFUL;
2076 } else {
2077 status = NT_STATUS_OK;
2078 }
2079
2080 return status;
2081 }
2082
2083 /*
2084 * Sets the user password using plaintext UTF16 (attribute "new_password") or
2085 * LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
2086 * as parameter if it's a user change or not ("userChange"). The "rejectReason"
2087 * gives some more informations if the changed failed.
2088 *
2089 * This wrapper function for "samdb_set_password" takes a SID as input rather
2090 * than a user DN.
2091 *
2092 * This call encapsulates a new LDB transaction for changing the password;
2093 * therefore the user hasn't to start a new one.
2094 *
2095 * Results: NT_STATUS_OK, NT_STATUS_INTERNAL_DB_CORRUPTION,
2096 * NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
2097 * NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION
2098 */
2099 NTSTATUS samdb_set_password_sid(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
2100 const struct dom_sid *user_sid,
2101 const DATA_BLOB *new_password,
2102 struct samr_Password *lmNewHash,
2103 struct samr_Password *ntNewHash,
2104 bool user_change,
2105 enum samPwdChangeReason *reject_reason,
2106 struct samr_DomInfo1 **_dominfo)
2107 {
2108 NTSTATUS nt_status;
2109 struct ldb_dn *user_dn;
2110 int ret;
2111
2112 ret = ldb_transaction_start(ldb);
2113 if (ret != LDB_SUCCESS) {
2114 DEBUG(1, ("Failed to start transaction: %s\n", ldb_errstring(ldb)));
2115 return NT_STATUS_TRANSACTION_ABORTED;
2116 }
2117
2118 user_dn = samdb_search_dn(ldb, mem_ctx, NULL,
2119 "(&(objectSid=%s)(objectClass=user))",
2120 ldap_encode_ndr_dom_sid(mem_ctx, user_sid));
2121 if (!user_dn) {
2122 ldb_transaction_cancel(ldb);
2123 DEBUG(3, ("samdb_set_password_sid: SID %s not found in samdb, returning NO_SUCH_USER\n",
2124 dom_sid_string(mem_ctx, user_sid)));
2125 return NT_STATUS_NO_SUCH_USER;
2126 }
2127
2128 nt_status = samdb_set_password(ldb, mem_ctx,
2129 user_dn, NULL,
2130 new_password,
2131 lmNewHash, ntNewHash,
2132 user_change,
2133 reject_reason, _dominfo);
2134 if (!NT_STATUS_IS_OK(nt_status)) {
2135 ldb_transaction_cancel(ldb);
2136 talloc_free(user_dn);
2137 return nt_status;
2138 }
2139
2140 ret = ldb_transaction_commit(ldb);
2141 if (ret != LDB_SUCCESS) {
2142 DEBUG(0,("Failed to commit transaction to change password on %s: %s\n",
2143 ldb_dn_get_linearized(user_dn),
2144 ldb_errstring(ldb)));
2145 talloc_free(user_dn);
2146 return NT_STATUS_TRANSACTION_ABORTED;
2147 }
2148
2149 talloc_free(user_dn);
2150 return NT_STATUS_OK;
2151 }
2152
2153
2154 NTSTATUS samdb_create_foreign_security_principal(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
2155 struct dom_sid *sid, struct ldb_dn **ret_dn)
2156 {
2157 struct ldb_message *msg;
2158 struct ldb_dn *basedn;
2159 char *sidstr;
2160 int ret;
2161
2162 sidstr = dom_sid_string(mem_ctx, sid);
2163 NT_STATUS_HAVE_NO_MEMORY(sidstr);
2164
2165 /* We might have to create a ForeignSecurityPrincipal, even if this user
2166 * is in our own domain */
2167
2168 msg = ldb_msg_new(sidstr);
2169 if (msg == NULL) {
2170 talloc_free(sidstr);
2171 return NT_STATUS_NO_MEMORY;
2172 }
2173
2174 ret = dsdb_wellknown_dn(sam_ctx, sidstr,
2175 ldb_get_default_basedn(sam_ctx),
2176 DS_GUID_FOREIGNSECURITYPRINCIPALS_CONTAINER,
2177 &basedn);
2178 if (ret != LDB_SUCCESS) {
2179 DEBUG(0, ("Failed to find DN for "
2180 "ForeignSecurityPrincipal container - %s\n", ldb_errstring(sam_ctx)));
2181 talloc_free(sidstr);
2182 return NT_STATUS_INTERNAL_DB_CORRUPTION;
2183 }
2184
2185 /* add core elements to the ldb_message for the alias */
2186 msg->dn = basedn;
2187 if ( ! ldb_dn_add_child_fmt(msg->dn, "CN=%s", sidstr)) {
2188 talloc_free(sidstr);
2189 return NT_STATUS_NO_MEMORY;
2190 }
2191
2192 samdb_msg_add_string(sam_ctx, msg, msg,
2193 "objectClass",
2194 "foreignSecurityPrincipal");
2195
2196 /* create the alias */
2197 ret = ldb_add(sam_ctx, msg);
2198 if (ret != LDB_SUCCESS) {
2199 DEBUG(0,("Failed to create foreignSecurityPrincipal "
2200 "record %s: %s\n",
2201 ldb_dn_get_linearized(msg->dn),
2202 ldb_errstring(sam_ctx)));
2203 talloc_free(sidstr);
2204 return NT_STATUS_INTERNAL_DB_CORRUPTION;
2205 }
2206
2207 *ret_dn = talloc_steal(mem_ctx, msg->dn);
2208 talloc_free(sidstr);
2209
2210 return NT_STATUS_OK;
2211 }
2212
2213
2214 /*
2215 Find the DN of a domain, assuming it to be a dotted.dns name
2216 */
2217
2218 struct ldb_dn *samdb_dns_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *dns_domain)
2219 {
2220 unsigned int i;
2221 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2222 const char *binary_encoded;
2223 const char **split_realm;
2224 struct ldb_dn *dn;
2225
2226 if (!tmp_ctx) {
2227 return NULL;
2228 }
2229
2230 split_realm = (const char **)str_list_make(tmp_ctx, dns_domain, ".");
2231 if (!split_realm) {
2232 talloc_free(tmp_ctx);
2233 return NULL;
2234 }
2235 dn = ldb_dn_new(mem_ctx, ldb, NULL);
2236 for (i=0; split_realm[i]; i++) {
2237 binary_encoded = ldb_binary_encode_string(tmp_ctx, split_realm[i]);
2238 if (!ldb_dn_add_base_fmt(dn, "dc=%s", binary_encoded)) {
2239 DEBUG(2, ("Failed to add dc=%s element to DN %s\n",
2240 binary_encoded, ldb_dn_get_linearized(dn)));
2241 talloc_free(tmp_ctx);
2242 return NULL;
2243 }
2244 }
2245 if (!ldb_dn_validate(dn)) {
2246 DEBUG(2, ("Failed to validated DN %s\n",
2247 ldb_dn_get_linearized(dn)));
2248 talloc_free(tmp_ctx);
2249 return NULL;
2250 }
2251 talloc_free(tmp_ctx);
2252 return dn;
2253 }
2254
2255 /*
2256 Find the DN of a domain, be it the netbios or DNS name
2257 */
2258 struct ldb_dn *samdb_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
2259 const char *domain_name)
2260 {
2261 const char * const domain_ref_attrs[] = {
2262 "ncName", NULL
2263 };
2264 const char * const domain_ref2_attrs[] = {
2265 NULL
2266 };
2267 struct ldb_result *res_domain_ref;
2268 char *escaped_domain = ldb_binary_encode_string(mem_ctx, domain_name);
2269 /* find the domain's DN */
2270 int ret_domain = ldb_search(ldb, mem_ctx,
2271 &res_domain_ref,
2272 samdb_partitions_dn(ldb, mem_ctx),
2273 LDB_SCOPE_ONELEVEL,
2274 domain_ref_attrs,
2275 "(&(nETBIOSName=%s)(objectclass=crossRef))",
2276 escaped_domain);
2277 if (ret_domain != 0) {
2278 return NULL;
2279 }
2280
2281 if (res_domain_ref->count == 0) {
2282 ret_domain = ldb_search(ldb, mem_ctx,
2283 &res_domain_ref,
2284 samdb_dns_domain_to_dn(ldb, mem_ctx, domain_name),
2285 LDB_SCOPE_BASE,
2286 domain_ref2_attrs,
2287 "(objectclass=domain)");
2288 if (ret_domain != 0) {
2289 return NULL;
2290 }
2291
2292 if (res_domain_ref->count == 1) {
2293 return res_domain_ref->msgs[0]->dn;
2294 }
2295 return NULL;
2296 }
2297
2298 if (res_domain_ref->count > 1) {
2299 DEBUG(0,("Found %d records matching domain [%s]\n",
2300 ret_domain, domain_name));
2301 return NULL;
2302 }
2303
2304 return samdb_result_dn(ldb, mem_ctx, res_domain_ref->msgs[0], "nCName", NULL);
2305
2306 }
2307
2308
2309 /*
2310 use a GUID to find a DN
2311 */
2312 int dsdb_find_dn_by_guid(struct ldb_context *ldb,
2313 TALLOC_CTX *mem_ctx,
2314 const struct GUID *guid, struct ldb_dn **dn)
2315 {
2316 int ret;
2317 struct ldb_result *res;
2318 const char *attrs[] = { NULL };
2319 char *guid_str = GUID_string(mem_ctx, guid);
2320
2321 if (!guid_str) {
2322 return LDB_ERR_OPERATIONS_ERROR;
2323 }
2324
2325 ret = dsdb_search(ldb, mem_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
2326 DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
2327 DSDB_SEARCH_SHOW_EXTENDED_DN |
2328 DSDB_SEARCH_ONE_ONLY,
2329 "objectGUID=%s", guid_str);
2330 talloc_free(guid_str);
2331 if (ret != LDB_SUCCESS) {
2332 return ret;
2333 }
2334
2335 *dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
2336 talloc_free(res);
2337
2338 return LDB_SUCCESS;
2339 }
2340
2341 /*
2342 use a DN to find a GUID with a given attribute name
2343 */
2344 int dsdb_find_guid_attr_by_dn(struct ldb_context *ldb,
2345 struct ldb_dn *dn, const char *attribute,
2346 struct GUID *guid)
2347 {
2348 int ret;
2349 struct ldb_result *res;
2350 const char *attrs[2];
2351 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2352
2353 attrs[0] = attribute;
2354 attrs[1] = NULL;
2355
2356 ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
2357 if (ret != LDB_SUCCESS) {
2358 talloc_free(tmp_ctx);
2359 return ret;
2360 }
2361 if (res->count < 1) {
2362 talloc_free(tmp_ctx);
2363 return LDB_ERR_NO_SUCH_OBJECT;
2364 }
2365 *guid = samdb_result_guid(res->msgs[0], attribute);
2366 talloc_free(tmp_ctx);
2367 return LDB_SUCCESS;
2368 }
2369
2370 /*
2371 use a DN to find a GUID
2372 */
2373 int dsdb_find_guid_by_dn(struct ldb_context *ldb,
2374 struct ldb_dn *dn, struct GUID *guid)
2375 {
2376 return dsdb_find_guid_attr_by_dn(ldb, dn, "objectGUID", guid);
2377 }
2378
2379
2380
2381 /*
2382 adds the given GUID to the given ldb_message. This value is added
2383 for the given attr_name (may be either "objectGUID" or "parentGUID").
2384 */
2385 int dsdb_msg_add_guid(struct ldb_message *msg,
2386 struct GUID *guid,
2387 const char *attr_name)
2388 {
2389 int ret;
2390 struct ldb_val v;
2391 NTSTATUS status;
2392 TALLOC_CTX *tmp_ctx = talloc_init("dsdb_msg_add_guid");
2393
2394 status = GUID_to_ndr_blob(guid, tmp_ctx, &v);
2395 if (!NT_STATUS_IS_OK(status)) {
2396 ret = LDB_ERR_OPERATIONS_ERROR;
2397 goto done;
2398 }
2399
2400 ret = ldb_msg_add_steal_value(msg, attr_name, &v);
2401 if (ret != LDB_SUCCESS) {
2402 DEBUG(4,(__location__ ": Failed to add %s to the message\n",
2403 attr_name));
2404 goto done;
2405 }
2406
2407 ret = LDB_SUCCESS;
2408
2409 done:
2410 talloc_free(tmp_ctx);
2411 return ret;
2412
2413 }
2414
2415
2416 /*
2417 use a DN to find a SID
2418 */
2419 int dsdb_find_sid_by_dn(struct ldb_context *ldb,
2420 struct ldb_dn *dn, struct dom_sid *sid)
2421 {
2422 int ret;
2423 struct ldb_result *res;
2424 const char *attrs[] = { "objectSID", NULL };
2425 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2426 struct dom_sid *s;
2427
2428 ZERO_STRUCTP(sid);
2429
2430 ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
2431 if (ret != LDB_SUCCESS) {
2432 talloc_free(tmp_ctx);
2433 return ret;
2434 }
2435 if (res->count < 1) {
2436 talloc_free(tmp_ctx);
2437 return LDB_ERR_NO_SUCH_OBJECT;
2438 }
2439 s = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSID");
2440 if (s == NULL) {
2441 talloc_free(tmp_ctx);
2442 return LDB_ERR_NO_SUCH_OBJECT;
2443 }
2444 *sid = *s;
2445 talloc_free(tmp_ctx);
2446 return LDB_SUCCESS;
2447 }
2448
2449
2450 /*
2451 load a repsFromTo blob list for a given partition GUID
2452 attr must be "repsFrom" or "repsTo"
2453 */
2454 WERROR dsdb_loadreps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
2455 const char *attr, struct repsFromToBlob **r, uint32_t *count)
2456 {
2457 const char *attrs[] = { attr, NULL };
2458 struct ldb_result *res = NULL;
2459 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2460 unsigned int i;
2461 struct ldb_message_element *el;
2462
2463 *r = NULL;
2464 *count = 0;
2465
2466 if (ldb_search(sam_ctx, tmp_ctx, &res, dn, LDB_SCOPE_BASE, attrs, NULL) != LDB_SUCCESS ||
2467 res->count < 1) {
2468 DEBUG(0,("dsdb_loadreps: failed to read partition object\n"));
2469 talloc_free(tmp_ctx);
2470 return WERR_DS_DRA_INTERNAL_ERROR;
2471 }
2472
2473 el = ldb_msg_find_element(res->msgs[0], attr);
2474 if (el == NULL) {
2475 /* it's OK to be empty */
2476 talloc_free(tmp_ctx);
2477 return WERR_OK;
2478 }
2479
2480 *count = el->num_values;
2481 *r = talloc_array(mem_ctx, struct repsFromToBlob, *count);
2482 if (*r == NULL) {
2483 talloc_free(tmp_ctx);
2484 return WERR_DS_DRA_INTERNAL_ERROR;
2485 }
2486
2487 for (i=0; i<(*count); i++) {
2488 enum ndr_err_code ndr_err;
2489 ndr_err = ndr_pull_struct_blob(&el->values[i],
2490 mem_ctx, lp_iconv_convenience(ldb_get_opaque(sam_ctx, "loadparm")),
2491 &(*r)[i],
2492 (ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
2493 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2494 talloc_free(tmp_ctx);
2495 return WERR_DS_DRA_INTERNAL_ERROR;
2496 }
2497 }
2498
2499 talloc_free(tmp_ctx);
2500
2501 return WERR_OK;
2502 }
2503
2504 /*
2505 save the repsFromTo blob list for a given partition GUID
2506 attr must be "repsFrom" or "repsTo"
2507 */
2508 WERROR dsdb_savereps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
2509 const char *attr, struct repsFromToBlob *r, uint32_t count)
2510 {
2511 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2512 struct ldb_message *msg;
2513 struct ldb_message_element *el;
2514 unsigned int i;
2515
2516 msg = ldb_msg_new(tmp_ctx);
2517 msg->dn = dn;
2518 if (ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_REPLACE, &el) != LDB_SUCCESS) {
2519 goto failed;
2520 }
2521
2522 el->values = talloc_array(msg, struct ldb_val, count);
2523 if (!el->values) {
2524 goto failed;
2525 }
2526
2527 for (i=0; i<count; i++) {
2528 struct ldb_val v;
2529 enum ndr_err_code ndr_err;
2530
2531 ndr_err = ndr_push_struct_blob(&v, tmp_ctx, lp_iconv_convenience(ldb_get_opaque(sam_ctx, "loadparm")),
2532 &r[i],
2533 (ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
2534 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2535 goto failed;
2536 }
2537
2538 el->num_values++;
2539 el->values[i] = v;
2540 }
2541
2542 if (ldb_modify(sam_ctx, msg) != LDB_SUCCESS) {
2543 DEBUG(0,("Failed to store %s - %s\n", attr, ldb_errstring(sam_ctx)));
2544 goto failed;
2545 }
2546
2547 talloc_free(tmp_ctx);
2548
2549 return WERR_OK;
2550
2551 failed:
2552 talloc_free(tmp_ctx);
2553 return WERR_DS_DRA_INTERNAL_ERROR;
2554 }
2555
2556
2557 /*
2558 load the uSNHighest and the uSNUrgent attributes from the @REPLCHANGED
2559 object for a partition
2560 */
2561 int dsdb_load_partition_usn(struct ldb_context *ldb, struct ldb_dn *dn,
2562 uint64_t *uSN, uint64_t *urgent_uSN)
2563 {
2564 struct ldb_request *req;
2565 int ret;
2566 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
2567 struct dsdb_control_current_partition *p_ctrl;
2568 struct ldb_result *res;
2569
2570 res = talloc_zero(tmp_ctx, struct ldb_result);
2571 if (!res) {
2572 talloc_free(tmp_ctx);
2573 return LDB_ERR_OPERATIONS_ERROR;
2574 }
2575
2576 ret = ldb_build_search_req(&req, ldb, tmp_ctx,
2577 ldb_dn_new(tmp_ctx, ldb, "@REPLCHANGED"),
2578 LDB_SCOPE_BASE,
2579 NULL, NULL,
2580 NULL,
2581 res, ldb_search_default_callback,
2582 NULL);
2583 if (ret != LDB_SUCCESS) {
2584 talloc_free(tmp_ctx);
2585 return ret;
2586 }
2587
2588 p_ctrl = talloc(req, struct dsdb_control_current_partition);
2589 if (p_ctrl == NULL) {
2590 talloc_free(res);
2591 return LDB_ERR_OPERATIONS_ERROR;
2592 }
2593 p_ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
2594 p_ctrl->dn = dn;
2595
2596
2597 ret = ldb_request_add_control(req,
2598 DSDB_CONTROL_CURRENT_PARTITION_OID,
2599 false, p_ctrl);
2600 if (ret != LDB_SUCCESS) {
2601 talloc_free(tmp_ctx);
2602 return ret;
2603 }
2604
2605 /* Run the new request */
2606 ret = ldb_request(ldb, req);
2607
2608 if (ret == LDB_SUCCESS) {
2609 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
2610 }
2611
2612 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2613 /* it hasn't been created yet, which means
2614 an implicit value of zero */
2615 *uSN = 0;
2616 talloc_free(tmp_ctx);
2617 return LDB_SUCCESS;
2618 }
2619
2620 if (ret != LDB_SUCCESS) {
2621 talloc_free(tmp_ctx);
2622 return ret;
2623 }
2624
2625 if (res->count < 1) {
2626 *uSN = 0;
2627 if (urgent_uSN) {
2628 *urgent_uSN = 0;
2629 }
2630 } else {
2631 *uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNHighest", 0);
2632 if (urgent_uSN) {
2633 *urgent_uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNUrgent", 0);
2634 }
2635 }
2636
2637 talloc_free(tmp_ctx);
2638
2639 return LDB_SUCCESS;
2640 }
2641
2642 int drsuapi_DsReplicaCursor2_compare(const struct drsuapi_DsReplicaCursor2 *c1,
2643 const struct drsuapi_DsReplicaCursor2 *c2)
2644 {
2645 return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
2646 }
2647
2648 int drsuapi_DsReplicaCursor_compare(const struct drsuapi_DsReplicaCursor *c1,
2649 const struct drsuapi_DsReplicaCursor *c2)
2650 {
2651 return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
2652 }
2653
2654
2655 /*
2656 see if a computer identified by its invocationId is a RODC
2657 */
2658 int samdb_is_rodc(struct ldb_context *sam_ctx, const struct GUID *objectGUID, bool *is_rodc)
2659 {
2660 /* 1) find the DN for this servers NTDSDSA object
2661 2) search for the msDS-isRODC attribute
2662 3) if not present then not a RODC
2663 4) if present and TRUE then is a RODC
2664 */
2665 struct ldb_dn *config_dn;
2666 const char *attrs[] = { "msDS-isRODC", NULL };
2667 int ret;
2668 struct ldb_result *res;
2669 TALLOC_CTX *tmp_ctx = talloc_new(sam_ctx);
2670
2671 config_dn = ldb_get_config_basedn(sam_ctx);
2672 if (!config_dn) {
2673 talloc_free(tmp_ctx);
2674 return LDB_ERR_OPERATIONS_ERROR;
2675 }
2676
2677 ret = dsdb_search(sam_ctx, tmp_ctx, &res, config_dn, LDB_SCOPE_SUBTREE, attrs,
2678 DSDB_SEARCH_ONE_ONLY, "objectGUID=%s", GUID_string(tmp_ctx, objectGUID));
2679
2680 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2681 *is_rodc = false;
2682 talloc_free(tmp_ctx);
2683 return LDB_SUCCESS;
2684 }
2685
2686 if (ret != LDB_SUCCESS) {
2687 DEBUG(1,(("Failed to find our own NTDS Settings object by objectGUID=%s!\n"),
2688 GUID_string(tmp_ctx, objectGUID)));
2689 *is_rodc = false;
2690 talloc_free(tmp_ctx);
2691 return ret;
2692 }
2693
2694 ret = ldb_msg_find_attr_as_bool(res->msgs[0], "msDS-isRODC", 0);
2695 *is_rodc = (ret == 1);
2696
2697 talloc_free(tmp_ctx);
2698 return LDB_SUCCESS;
2699 }
2700
2701
2702 /*
2703 see if we are a RODC
2704 */
2705 int samdb_rodc(struct ldb_context *sam_ctx, bool *am_rodc)
2706 {
2707 const struct GUID *objectGUID;
2708 objectGUID = samdb_ntds_objectGUID(sam_ctx);
2709 if (!objectGUID) {
2710 return LDB_ERR_OPERATIONS_ERROR;
2711 }
2712 return samdb_is_rodc(sam_ctx, objectGUID, am_rodc);
2713 }
2714
2715
2716
2717 /*
2718 return NTDS options flags. See MS-ADTS 7.1.1.2.2.1.2.1.1
2719
2720 flags are DS_NTDS_OPTION_*
2721 */
2722 int samdb_ntds_options(struct ldb_context *ldb, uint32_t *options)
2723 {
2724 TALLOC_CTX *tmp_ctx;
2725 const char *attrs[] = { "options", NULL };
2726 int ret;
2727 struct ldb_result *res;
2728
2729 tmp_ctx = talloc_new(ldb);
2730 if (tmp_ctx == NULL) {
2731 goto failed;
2732 }
2733
2734 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
2735 if (ret) {
2736 goto failed;
2737 }
2738
2739 if (res->count != 1) {
2740 goto failed;
2741 }
2742
2743 *options = samdb_result_uint(res->msgs[0], "options", 0);
2744
2745 talloc_free(tmp_ctx);
2746
2747 return LDB_SUCCESS;
2748
2749 failed:
2750 DEBUG(1,("Failed to find our own NTDS Settings options in the ldb!\n"));
2751 talloc_free(tmp_ctx);
2752 return LDB_ERR_NO_SUCH_OBJECT;
2753 }
2754
2755 const char* samdb_ntds_object_category(TALLOC_CTX *tmp_ctx, struct ldb_context *ldb)
2756 {
2757 const char *attrs[] = { "objectCategory", NULL };
2758 int ret;
2759 struct ldb_result *res;
2760
2761 ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
2762 if (ret) {
2763 goto failed;
2764 }
2765
2766 if (res->count != 1) {
2767 goto failed;
2768 }
2769
2770 return samdb_result_string(res->msgs[0], "objectCategory", NULL);
2771
2772 failed:
2773 DEBUG(1,("Failed to find our own NTDS Settings objectCategory in the ldb!\n"));
2774 return NULL;
2775 }
2776
2777 /*
2778 * Function which generates a "lDAPDisplayName" attribute from a "CN" one.
2779 * Algorithm implemented according to MS-ADTS 3.1.1.2.3.4
2780 */
2781 const char *samdb_cn_to_lDAPDisplayName(TALLOC_CTX *mem_ctx, const char *cn)
2782 {
2783 char **tokens, *ret;
2784 size_t i;
2785
2786 tokens = str_list_make(mem_ctx, cn, " -_");
2787 if (tokens == NULL)
2788 return NULL;
2789
2790 /* "tolower()" and "toupper()" should also work properly on 0x00 */
2791 tokens[0][0] = tolower(tokens[0][0]);
2792 for (i = 1; i < str_list_length((const char **)tokens); i++)
2793 tokens[i][0] = toupper(tokens[i][0]);
2794
2795 ret = talloc_strdup(mem_ctx, tokens[0]);
2796 for (i = 1; i < str_list_length((const char **)tokens); i++)
2797 ret = talloc_asprintf_append_buffer(ret, "%s", tokens[i]);
2798
2799 talloc_free(tokens);
2800
2801 return ret;
2802 }
2803
2804 /*
2805 return domain functional level
2806 returns DS_DOMAIN_FUNCTION_*
2807 */
2808 int dsdb_functional_level(struct ldb_context *ldb)
2809 {
2810 int *domainFunctionality =
2811 talloc_get_type(ldb_get_opaque(ldb, "domainFunctionality"), int);
2812 if (!domainFunctionality) {
2813 DEBUG(0,(__location__ ": WARNING: domainFunctionality not setup\n"));
2814 return DS_DOMAIN_FUNCTION_2000;
2815 }
2816 return *domainFunctionality;
2817 }
2818
2819 /*
2820 set a GUID in an extended DN structure
2821 */
2822 int dsdb_set_extended_dn_guid(struct ldb_dn *dn, const struct GUID *guid, const char *component_name)
2823 {
2824 struct ldb_val v;
2825 NTSTATUS status;
2826 int ret;
2827
2828 status = GUID_to_ndr_blob(guid, dn, &v);
2829 if (!NT_STATUS_IS_OK(status)) {
2830 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
2831 }
2832
2833 ret = ldb_dn_set_extended_component(dn, component_name, &v);
2834 data_blob_free(&v);
2835 return ret;
2836 }
2837
2838 /*
2839 return a GUID from a extended DN structure
2840 */
2841 NTSTATUS dsdb_get_extended_dn_guid(struct ldb_dn *dn, struct GUID *guid, const char *component_name)
2842 {
2843 const struct ldb_val *v;
2844
2845 v = ldb_dn_get_extended_component(dn, component_name);
2846 if (v == NULL) {
2847 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2848 }
2849
2850 return GUID_from_ndr_blob(v, guid);
2851 }
2852
2853 /*
2854 return a uint64_t from a extended DN structure
2855 */
2856 NTSTATUS dsdb_get_extended_dn_uint64(struct ldb_dn *dn, uint64_t *val, const char *component_name)
2857 {
2858 const struct ldb_val *v;
2859 char *s;
2860
2861 v = ldb_dn_get_extended_component(dn, component_name);
2862 if (v == NULL) {
2863 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2864 }
2865 s = talloc_strndup(dn, (const char *)v->data, v->length);
2866 NT_STATUS_HAVE_NO_MEMORY(s);
2867
2868 *val = strtoull(s, NULL, 0);
2869
2870 talloc_free(s);
2871 return NT_STATUS_OK;
2872 }
2873
2874 /*
2875 return a NTTIME from a extended DN structure
2876 */
2877 NTSTATUS dsdb_get_extended_dn_nttime(struct ldb_dn *dn, NTTIME *nttime, const char *component_name)
2878 {
2879 return dsdb_get_extended_dn_uint64(dn, nttime, component_name);
2880 }
2881
2882 /*
2883 return a uint32_t from a extended DN structure
2884 */
2885 NTSTATUS dsdb_get_extended_dn_uint32(struct ldb_dn *dn, uint32_t *val, const char *component_name)
2886 {
2887 const struct ldb_val *v;
2888 char *s;
2889
2890 v = ldb_dn_get_extended_component(dn, component_name);
2891 if (v == NULL) {
2892 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2893 }
2894
2895 s = talloc_strndup(dn, (const char *)v->data, v->length);
2896 NT_STATUS_HAVE_NO_MEMORY(s);
2897
2898 *val = strtoul(s, NULL, 0);
2899
2900 talloc_free(s);
2901 return NT_STATUS_OK;
2902 }
2903
2904 /*
2905 return a dom_sid from a extended DN structure
2906 */
2907 NTSTATUS dsdb_get_extended_dn_sid(struct ldb_dn *dn, struct dom_sid *sid, const char *component_name)
2908 {
2909 const struct ldb_val *sid_blob;
2910 struct TALLOC_CTX *tmp_ctx;
2911 enum ndr_err_code ndr_err;
2912
2913 sid_blob = ldb_dn_get_extended_component(dn, "SID");
2914 if (!sid_blob) {
2915 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2916 }
2917
2918 tmp_ctx = talloc_new(NULL);
2919
2920 ndr_err = ndr_pull_struct_blob_all(sid_blob, tmp_ctx, NULL, sid,
2921 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
2922 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2923 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
2924 talloc_free(tmp_ctx);
2925 return status;
2926 }
2927
2928 talloc_free(tmp_ctx);
2929 return NT_STATUS_OK;
2930 }
2931
2932
2933 /*
2934 return RMD_FLAGS directly from a ldb_dn
2935 returns 0 if not found
2936 */
2937 uint32_t dsdb_dn_rmd_flags(struct ldb_dn *dn)
2938 {
2939 const struct ldb_val *v;
2940 char buf[32];
2941 v = ldb_dn_get_extended_component(dn, "RMD_FLAGS");
2942 if (!v || v->length > sizeof(buf)-1) return 0;
2943 strncpy(buf, (const char *)v->data, v->length);
2944 buf[v->length] = 0;
2945 return strtoul(buf, NULL, 10);
2946 }
2947
2948 /*
2949 return RMD_FLAGS directly from a ldb_val for a DN
2950 returns 0 if RMD_FLAGS is not found
2951 */
2952 uint32_t dsdb_dn_val_rmd_flags(struct ldb_val *val)
2953 {
2954 const char *p;
2955 uint32_t flags;
2956 char *end;
2957
2958 if (val->length < 13) {
2959 return 0;
2960 }
2961 p = memmem(val->data, val->length-2, "<RMD_FLAGS=", 11);
2962 if (!p) {
2963 return 0;
2964 }
2965 flags = strtoul(p+11, &end, 10);
2966 if (!end || *end != '>') {
2967 /* it must end in a > */
2968 return 0;
2969 }
2970 return flags;
2971 }
2972
2973 /*
2974 return true if a ldb_val containing a DN in storage form is deleted
2975 */
2976 bool dsdb_dn_is_deleted_val(struct ldb_val *val)
2977 {
2978 return (dsdb_dn_val_rmd_flags(val) & DSDB_RMD_FLAG_DELETED) != 0;
2979 }
2980
2981 /*
2982 return true if a ldb_val containing a DN in storage form is
2983 in the upgraded w2k3 linked attribute format
2984 */
2985 bool dsdb_dn_is_upgraded_link_val(struct ldb_val *val)
2986 {
2987 return memmem(val->data, val->length, "<RMD_ADDTIME=", 13) != NULL;
2988 }
2989
2990 /*
2991 return a DN for a wellknown GUID
2992 */
2993 int dsdb_wellknown_dn(struct ldb_context *samdb, TALLOC_CTX *mem_ctx,
2994 struct ldb_dn *nc_root, const char *wk_guid,
2995 struct ldb_dn **wkguid_dn)
2996 {
2997 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
2998 const char *attrs[] = { NULL };
2999 int ret;
3000 struct ldb_dn *dn;
3001 struct ldb_result *res;
3002
3003 /* construct the magic WKGUID DN */
3004 dn = ldb_dn_new_fmt(tmp_ctx, samdb, "<WKGUID=%s,%s>",
3005 wk_guid, ldb_dn_get_linearized(nc_root));
3006 if (!wkguid_dn) {
3007 talloc_free(tmp_ctx);
3008 return LDB_ERR_OPERATIONS_ERROR;
3009 }
3010
3011 ret = dsdb_search_dn(samdb, tmp_ctx, &res, dn, attrs, DSDB_SEARCH_SHOW_DELETED);
3012 if (ret != LDB_SUCCESS) {
3013 talloc_free(tmp_ctx);
3014 return ret;
3015 }
3016
3017 (*wkguid_dn) = talloc_steal(mem_ctx, res->msgs[0]->dn);
3018 talloc_free(tmp_ctx);
3019 return LDB_SUCCESS;
3020 }
3021
3022
3023 static int dsdb_dn_compare_ptrs(struct ldb_dn **dn1, struct ldb_dn **dn2)
3024 {
3025 return ldb_dn_compare(*dn1, *dn2);
3026 }
3027
3028 /*
3029 find a NC root given a DN within the NC
3030 */
3031 int dsdb_find_nc_root(struct ldb_context *samdb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
3032 struct ldb_dn **nc_root)
3033 {
3034 const char *root_attrs[] = { "namingContexts", NULL };
3035 TALLOC_CTX *tmp_ctx;
3036 int ret;
3037 struct ldb_message_element *el;
3038 struct ldb_result *root_res;
3039 int i;
3040 struct ldb_dn **nc_dns;
3041
3042 tmp_ctx = talloc_new(samdb);
3043 if (tmp_ctx == NULL) {
3044 return LDB_ERR_OPERATIONS_ERROR;
3045 }
3046
3047 ret = ldb_search(samdb, tmp_ctx, &root_res,
3048 ldb_dn_new(tmp_ctx, samdb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
3049 if (ret) {
3050 DEBUG(1,("Searching for namingContexts in rootDSE failed: %s\n", ldb_errstring(samdb)));
3051 talloc_free(tmp_ctx);
3052 return ret;
3053 }
3054
3055 el = ldb_msg_find_element(root_res->msgs[0], "namingContexts");
3056 if (!el) {
3057 DEBUG(1,("Finding namingContexts element in root_res failed: %s\n",
3058 ldb_errstring(samdb)));
3059 talloc_free(tmp_ctx);
3060 return LDB_ERR_NO_SUCH_ATTRIBUTE;
3061 }
3062
3063 nc_dns = talloc_array(tmp_ctx, struct ldb_dn *, el->num_values);
3064 if (!nc_dns) {
3065 talloc_free(tmp_ctx);
3066 return LDB_ERR_OPERATIONS_ERROR;
3067 }
3068
3069 for (i=0; i<el->num_values; i++) {
3070 nc_dns[i] = ldb_dn_from_ldb_val(nc_dns, samdb, &el->values[i]);
3071 if (nc_dns[i] == NULL) {
3072 talloc_free(tmp_ctx);
3073 return LDB_ERR_OPERATIONS_ERROR;
3074 }
3075 }
3076
3077 TYPESAFE_QSORT(nc_dns, el->num_values, dsdb_dn_compare_ptrs);
3078
3079 for (i=0; i<el->num_values; i++) {
3080 if (ldb_dn_compare_base(nc_dns[i], dn) == 0) {
3081 (*nc_root) = talloc_steal(mem_ctx, nc_dns[i]);
3082 talloc_free(tmp_ctx);
3083 return LDB_SUCCESS;
3084 }
3085 }
3086
3087 talloc_free(tmp_ctx);
3088 return LDB_ERR_NO_SUCH_OBJECT;
3089 }
3090
3091
3092 /*
3093 find the deleted objects DN for any object, by looking for the NC
3094 root, then looking up the wellknown GUID
3095 */
3096 int dsdb_get_deleted_objects_dn(struct ldb_context *ldb,
3097 TALLOC_CTX *mem_ctx, struct ldb_dn *obj_dn,
3098 struct ldb_dn **do_dn)
3099 {
3100 struct ldb_dn *nc_root;
3101 int ret;
3102
3103 ret = dsdb_find_nc_root(ldb, mem_ctx, obj_dn, &nc_root);
3104 if (ret != LDB_SUCCESS) {
3105 return ret;
3106 }
3107
3108 ret = dsdb_wellknown_dn(ldb, mem_ctx, nc_root, DS_GUID_DELETED_OBJECTS_CONTAINER, do_dn);
3109 talloc_free(nc_root);
3110 return ret;
3111 }
3112
3113 /*
3114 return the tombstoneLifetime, in days
3115 */
3116 int dsdb_tombstone_lifetime(struct ldb_context *ldb, uint32_t *lifetime)
3117 {
3118 struct ldb_dn *dn;
3119 dn = ldb_get_config_basedn(ldb);
3120 if (!dn) {
3121 return LDB_ERR_NO_SUCH_OBJECT;
3122 }
3123 dn = ldb_dn_copy(ldb, dn);
3124 if (!dn) {
3125 return LDB_ERR_OPERATIONS_ERROR;
3126 }
3127 /* see MS-ADTS section 7.1.1.2.4.1.1. There doesn't appear to
3128 be a wellknown GUID for this */
3129 if (!ldb_dn_add_child_fmt(dn, "CN=Directory Service,CN=Windows NT,CN=Services")) {
3130 talloc_free(dn);
3131 return LDB_ERR_OPERATIONS_ERROR;
3132 }
3133
3134 *lifetime = samdb_search_uint(ldb, dn, 180, dn, "tombstoneLifetime", "objectClass=nTDSService");
3135 talloc_free(dn);
3136 return LDB_SUCCESS;
3137 }
3138
3139 /*
3140 compare a ldb_val to a string case insensitively
3141 */
3142 int samdb_ldb_val_case_cmp(const char *s, struct ldb_val *v)
3143 {
3144 size_t len = strlen(s);
3145 int ret;
3146 if (len > v->length) return 1;
3147 ret = strncasecmp(s, (const char *)v->data, v->length);
3148 if (ret != 0) return ret;
3149 if (v->length > len && v->data[len] != 0) {
3150 return -1;
3151 }
3152 return 0;
3153 }
3154
3155
3156 /*
3157 load the UDV for a partition in v2 format
3158 The list is returned sorted, and with our local cursor added
3159 */
3160 int dsdb_load_udv_v2(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
3161 struct drsuapi_DsReplicaCursor2 **cursors, uint32_t *count)
3162 {
3163 static const char *attrs[] = { "replUpToDateVector", NULL };
3164 struct ldb_result *r;
3165 const struct ldb_val *ouv_value;
3166 unsigned int i;
3167 int ret;
3168 uint64_t highest_usn;
3169 const struct GUID *our_invocation_id;
3170 struct timeval now = timeval_current();
3171
3172 ret = ldb_search(samdb, mem_ctx, &r, dn, LDB_SCOPE_BASE, attrs, NULL);
3173 if (ret != LDB_SUCCESS) {
3174 return ret;
3175 }
3176
3177 ouv_value = ldb_msg_find_ldb_val(r->msgs[0], "replUpToDateVector");
3178 if (ouv_value) {
3179 enum ndr_err_code ndr_err;
3180 struct replUpToDateVectorBlob ouv;
3181
3182 ndr_err = ndr_pull_struct_blob(ouv_value, r,
3183 lp_iconv_convenience(ldb_get_opaque(samdb, "loadparm")), &ouv,
3184 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
3185 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
3186 talloc_free(r);
3187 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
3188 }
3189 if (ouv.version != 2) {
3190 /* we always store as version 2, and
3191 * replUpToDateVector is not replicated
3192 */
3193 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
3194 }
3195
3196 *count = ouv.ctr.ctr2.count;
3197 *cursors = talloc_steal(mem_ctx, ouv.ctr.ctr2.cursors);
3198 } else {
3199 *count = 0;
3200 *cursors = NULL;
3201 }
3202
3203 talloc_free(r);
3204
3205 our_invocation_id = samdb_ntds_invocation_id(samdb);
3206 if (!our_invocation_id) {
3207 DEBUG(0,(__location__ ": No invocationID on samdb - %s\n", ldb_errstring(samdb)));
3208 talloc_free(*cursors);
3209 return LDB_ERR_OPERATIONS_ERROR;
3210 }
3211
3212 ret = dsdb_load_partition_usn(samdb, dn, &highest_usn, NULL);
3213 if (ret != LDB_SUCCESS) {
3214 /* nothing to add - this can happen after a vampire */
3215 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3216 return LDB_SUCCESS;
3217 }
3218
3219 for (i=0; i<*count; i++) {
3220 if (GUID_equal(our_invocation_id, &(*cursors)[i].source_dsa_invocation_id)) {
3221 (*cursors)[i].highest_usn = highest_usn;
3222 (*cursors)[i].last_sync_success = timeval_to_nttime(&now);
3223 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3224 return LDB_SUCCESS;
3225 }
3226 }
3227
3228 (*cursors) = talloc_realloc(mem_ctx, *cursors, struct drsuapi_DsReplicaCursor2, (*count)+1);
3229 if (! *cursors) {
3230 return LDB_ERR_OPERATIONS_ERROR;
3231 }
3232
3233 (*cursors)[*count].source_dsa_invocation_id = *our_invocation_id;
3234 (*cursors)[*count].highest_usn = highest_usn;
3235 (*cursors)[*count].last_sync_success = timeval_to_nttime(&now);
3236 (*count)++;
3237
3238 TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
3239
3240 return LDB_SUCCESS;
3241 }
3242
3243 /*
3244 load the UDV for a partition in version 1 format
3245 The list is returned sorted, and with our local cursor added
3246 */
3247 int dsdb_load_udv_v1(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
3248 struct drsuapi_DsReplicaCursor **cursors, uint32_t *count)
3249 {
3250 struct drsuapi_DsReplicaCursor2 *v2;
3251 unsigned int i;
3252 int ret;
3253
3254 ret = dsdb_load_udv_v2(samdb, dn, mem_ctx, &v2, count);
3255 if (ret != LDB_SUCCESS) {
3256 return ret;
3257 }
3258
3259 if (*count == 0) {
3260 talloc_free(v2);
3261 *cursors = NULL;
3262 return LDB_SUCCESS;
3263 }
3264
3265 *cursors = talloc_array(mem_ctx, struct drsuapi_DsReplicaCursor, *count);
3266 if (*cursors == NULL) {
3267 talloc_free(v2);
3268 return LDB_ERR_OPERATIONS_ERROR;
3269 }
3270
3271 for (i=0; i<*count; i++) {
3272 (*cursors)[i].source_dsa_invocation_id = v2[i].source_dsa_invocation_id;
3273 (*cursors)[i].highest_usn = v2[i].highest_usn;
3274 }
3275 talloc_free(v2);
3276 return LDB_SUCCESS;
3277 }
3278
3279 /*
3280 add a set of controls to a ldb_request structure based on a set of
3281 flags. See util.h for a list of available flags
3282 */
3283 int dsdb_request_add_controls(struct ldb_request *req, uint32_t dsdb_flags)
3284 {
3285 int ret;
3286 if (dsdb_flags & DSDB_SEARCH_SEARCH_ALL_PARTITIONS) {
3287 struct ldb_search_options_control *options;
3288 /* Using the phantom root control allows us to search all partitions */
3289 options = talloc(req, struct ldb_search_options_control);
3290 if (options == NULL) {
3291 return LDB_ERR_OPERATIONS_ERROR;
3292 }
3293 options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
3294
3295 ret = ldb_request_add_control(req,
3296 LDB_CONTROL_SEARCH_OPTIONS_OID,
3297 true, options);
3298 if (ret != LDB_SUCCESS) {
3299 return ret;
3300 }
3301 }
3302
3303 if (dsdb_flags & DSDB_SEARCH_SHOW_DELETED) {
3304 ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
3305 if (ret != LDB_SUCCESS) {
3306 return ret;
3307 }
3308 }
3309
3310 if (dsdb_flags & DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT) {
3311 ret = ldb_request_add_control(req, DSDB_CONTROL_DN_STORAGE_FORMAT_OID, true, NULL);
3312 if (ret != LDB_SUCCESS) {
3313 return ret;
3314 }
3315 }
3316
3317 if (dsdb_flags & DSDB_SEARCH_SHOW_EXTENDED_DN) {
3318 struct ldb_extended_dn_control *extended_ctrl = talloc(req, struct ldb_extended_dn_control);
3319 if (!extended_ctrl) {
3320 return LDB_ERR_OPERATIONS_ERROR;
3321 }
3322 extended_ctrl->type = 1;
3323
3324 ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, extended_ctrl);
3325 if (ret != LDB_SUCCESS) {
3326 return ret;
3327 }
3328 }
3329
3330 if (dsdb_flags & DSDB_SEARCH_REVEAL_INTERNALS) {
3331 ret = ldb_request_add_control(req, LDB_CONTROL_REVEAL_INTERNALS, false, NULL);
3332 if (ret != LDB_SUCCESS) {
3333 return ret;
3334 }
3335 }
3336
3337 if (dsdb_flags & DSDB_MODIFY_RELAX) {
3338 ret = ldb_request_add_control(req, LDB_CONTROL_RELAX_OID, false, NULL);
3339 if (ret != LDB_SUCCESS) {
3340 return ret;
3341 }
3342 }
3343
3344 if (dsdb_flags & DSDB_MODIFY_PERMISSIVE) {
3345 ret = ldb_request_add_control(req, LDB_CONTROL_PERMISSIVE_MODIFY_OID, false, NULL);
3346 if (ret != LDB_SUCCESS) {
3347 return ret;
3348 }
3349 }
3350
3351 if (dsdb_flags & DSDB_FLAG_AS_SYSTEM) {
3352 ret = ldb_request_add_control(req, LDB_CONTROL_AS_SYSTEM_OID, false, NULL);
3353 if (ret != LDB_SUCCESS) {
3354 return ret;
3355 }
3356 }
3357
3358 return LDB_SUCCESS;
3359 }
3360
3361 /*
3362 a modify with a set of controls
3363 */
3364 int dsdb_modify(struct ldb_context *ldb, const struct ldb_message *message,
3365 uint32_t dsdb_flags)
3366 {
3367 struct ldb_request *req;
3368 int ret;
3369
3370 ret = ldb_build_mod_req(&req, ldb, ldb,
3371 message,
3372 NULL,
3373 NULL,
3374 ldb_op_default_callback,
3375 NULL);
3376
3377 if (ret != LDB_SUCCESS) return ret;
3378
3379 ret = dsdb_request_add_controls(req, dsdb_flags);
3380 if (ret != LDB_SUCCESS) {
3381 talloc_free(req);
3382 return ret;
3383 }
3384
3385 ret = dsdb_autotransaction_request(ldb, req);
3386
3387 talloc_free(req);
3388 return ret;
3389 }
3390
3391 /*
3392 like dsdb_modify() but set all the element flags to
3393 LDB_FLAG_MOD_REPLACE
3394 */
3395 int dsdb_replace(struct ldb_context *ldb, struct ldb_message *msg, uint32_t dsdb_flags)
3396 {
3397 unsigned int i;
3398
3399 /* mark all the message elements as LDB_FLAG_MOD_REPLACE */
3400 for (i=0;i<msg->num_elements;i++) {
3401 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
3402 }
3403
3404 return dsdb_modify(ldb, msg, dsdb_flags);
3405 }
3406
3407
3408 /*
3409 search for attrs on one DN, allowing for dsdb_flags controls
3410 */
3411 int dsdb_search_dn(struct ldb_context *ldb,
3412 TALLOC_CTX *mem_ctx,
3413 struct ldb_result **_res,
3414 struct ldb_dn *basedn,
3415 const char * const *attrs,
3416 uint32_t dsdb_flags)
3417 {
3418 int ret;
3419 struct ldb_request *req;
3420 struct ldb_result *res;
3421
3422 res = talloc_zero(mem_ctx, struct ldb_result);
3423 if (!res) {
3424 return LDB_ERR_OPERATIONS_ERROR;
3425 }
3426
3427 ret = ldb_build_search_req(&req, ldb, res,
3428 basedn,
3429 LDB_SCOPE_BASE,
3430 NULL,
3431 attrs,
3432 NULL,
3433 res,
3434 ldb_search_default_callback,
3435 NULL);
3436 if (ret != LDB_SUCCESS) {
3437 talloc_free(res);
3438 return ret;
3439 }
3440
3441 ret = dsdb_request_add_controls(req, dsdb_flags);
3442 if (ret != LDB_SUCCESS) {
3443 talloc_free(res);
3444 return ret;
3445 }
3446
3447 ret = ldb_request(ldb, req);
3448 if (ret == LDB_SUCCESS) {
3449 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
3450 }
3451
3452 talloc_free(req);
3453 if (ret != LDB_SUCCESS) {
3454 talloc_free(res);
3455 return ret;
3456 }
3457
3458 *_res = res;
3459 return LDB_SUCCESS;
3460 }
3461
3462 /*
3463 general search with dsdb_flags for controls
3464 */
3465 int dsdb_search(struct ldb_context *ldb,
3466 TALLOC_CTX *mem_ctx,
3467 struct ldb_result **_res,
3468 struct ldb_dn *basedn,
3469 enum ldb_scope scope,
3470 const char * const *attrs,
3471 uint32_t dsdb_flags,
3472 const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
3473 {
3474 int ret;
3475 struct ldb_request *req;
3476 struct ldb_result *res;
3477 va_list ap;
3478 char *expression = NULL;
3479 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
3480
3481 res = talloc_zero(tmp_ctx, struct ldb_result);
3482 if (!res) {
3483 talloc_free(tmp_ctx);
3484 return LDB_ERR_OPERATIONS_ERROR;
3485 }
3486
3487 if (exp_fmt) {
3488 va_start(ap, exp_fmt);
3489 expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
3490 va_end(ap);
3491
3492 if (!expression) {
3493 talloc_free(tmp_ctx);
3494 return LDB_ERR_OPERATIONS_ERROR;
3495 }
3496 }
3497
3498 ret = ldb_build_search_req(&req, ldb, tmp_ctx,
3499 basedn,
3500 scope,
3501 expression,
3502 attrs,
3503 NULL,
3504 res,
3505 ldb_search_default_callback,
3506 NULL);
3507 if (ret != LDB_SUCCESS) {
3508 talloc_free(tmp_ctx);
3509 return ret;
3510 }
3511
3512 ret = dsdb_request_add_controls(req, dsdb_flags);
3513 if (ret != LDB_SUCCESS) {
3514 talloc_free(tmp_ctx);
3515 return ret;
3516 }
3517
3518 ret = ldb_request(ldb, req);
3519 if (ret == LDB_SUCCESS) {
3520 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
3521 }
3522
3523 if (ret != LDB_SUCCESS) {
3524 talloc_free(tmp_ctx);
3525 return ret;
3526 }
3527
3528 if (dsdb_flags & DSDB_SEARCH_ONE_ONLY) {
3529 if (res->count == 0) {
3530 talloc_free(tmp_ctx);
3531 return LDB_ERR_NO_SUCH_OBJECT;
3532 }
3533 if (res->count != 1) {
3534 talloc_free(tmp_ctx);
3535 return LDB_ERR_CONSTRAINT_VIOLATION;
3536 }
3537 }
3538
3539 *_res = talloc_steal(mem_ctx, res);
3540 talloc_free(tmp_ctx);
3541
3542 return LDB_SUCCESS;
3543 }
3544
3545
3546 /*
3547 general search with dsdb_flags for controls
3548 returns exactly 1 record or an error
3549 */
3550 int dsdb_search_one(struct ldb_context *ldb,
3551 TALLOC_CTX *mem_ctx,
3552 struct ldb_message **msg,
3553 struct ldb_dn *basedn,
3554 enum ldb_scope scope,
3555 const char * const *attrs,
3556 uint32_t dsdb_flags,
3557 const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
3558 {
3559 int ret;
3560 struct ldb_result *res;
3561 va_list ap;
3562 char *expression = NULL;
3563 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
3564
3565 dsdb_flags |= DSDB_SEARCH_ONE_ONLY;
3566
3567 res = talloc_zero(tmp_ctx, struct ldb_result);
3568 if (!res) {
3569 talloc_free(tmp_ctx);
3570 return LDB_ERR_OPERATIONS_ERROR;
3571 }
3572
3573 if (exp_fmt) {
3574 va_start(ap, exp_fmt);
3575 expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
3576 va_end(ap);
3577
3578 if (!expression) {
3579 talloc_free(tmp_ctx);
3580 return LDB_ERR_OPERATIONS_ERROR;
3581 }
3582 }
3583
3584 ret = dsdb_search(ldb, tmp_ctx, &res, basedn, scope, attrs,
3585 dsdb_flags, "%s", expression);
3586 if (ret != LDB_SUCCESS) {
3587 talloc_free(tmp_ctx);
3588 return ret;
3589 }
3590
3591 *msg = talloc_steal(mem_ctx, res->msgs[0]);
3592 talloc_free(tmp_ctx);
3593
3594 return LDB_SUCCESS;
3595 }
3596
3597 /* returns back the forest DNS name */
3598 const char *samdb_forest_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
3599 {
3600 const char *forest_name = ldb_dn_canonical_string(mem_ctx,
3601 ldb_get_root_basedn(ldb));
3602 char *p;
3603
3604 if (forest_name == NULL) {
3605 return NULL;
3606 }
3607
3608 p = strchr(forest_name, '/');
3609 if (p) {
3610 *p = '\0';
3611 }
3612
3613 return forest_name;
3614 }
3615
3616 /*
3617 validate that an DSA GUID belongs to the specified user sid.
3618 The user SID must be a domain controller account (either RODC or
3619 RWDC)
3620 */
3621 int dsdb_validate_dsa_guid(struct ldb_context *ldb,
3622 const struct GUID *dsa_guid,
3623 const struct dom_sid *sid)
3624 {
3625 /* strategy:
3626 - find DN of record with the DSA GUID in the
3627 configuration partition (objectGUID)
3628 - remove "NTDS Settings" component from DN
3629 - do a base search on that DN for serverReference with
3630 extended-dn enabled
3631 - extract objectSID from resulting serverReference
3632 attribute
3633 - check this sid matches the sid argument
3634 */
3635 struct ldb_dn *config_dn;
3636 TALLOC_CTX *tmp_ctx = talloc_new(ldb);
3637 struct ldb_message *msg;
3638 const char *attrs1[] = { NULL };
3639 const char *attrs2[] = { "serverReference", NULL };
3640 int ret;
3641 struct ldb_dn *dn, *account_dn;
3642 struct dom_sid sid2;
3643 NTSTATUS status;
3644
3645 config_dn = ldb_get_config_basedn(ldb);
3646
3647 ret = dsdb_search_one(ldb, tmp_ctx, &msg, config_dn, LDB_SCOPE_SUBTREE,
3648 attrs1, 0, "(&(objectGUID=%s)(objectClass=nTDSDSA))", GUID_string(tmp_ctx, dsa_guid));
3649 if (ret != LDB_SUCCESS) {
3650 DEBUG(1,(__location__ ": Failed to find DSA objectGUID %s for sid %s\n",
3651 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3652 talloc_free(tmp_ctx);
3653 return LDB_ERR_OPERATIONS_ERROR;
3654 }
3655 dn = msg->dn;
3656
3657 if (!ldb_dn_remove_child_components(dn, 1)) {
3658 talloc_free(tmp_ctx);
3659 return LDB_ERR_OPERATIONS_ERROR;
3660 }
3661
3662 ret = dsdb_search_one(ldb, tmp_ctx, &msg, dn, LDB_SCOPE_BASE,
3663 attrs2, DSDB_SEARCH_SHOW_EXTENDED_DN,
3664 "(objectClass=server)");
3665 if (ret != LDB_SUCCESS) {
3666 DEBUG(1,(__location__ ": Failed to find server record for DSA with objectGUID %s, sid %s\n",
3667 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3668 talloc_free(tmp_ctx);
3669 return LDB_ERR_OPERATIONS_ERROR;
3670 }
3671
3672 account_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, msg, "serverReference");
3673 if (account_dn == NULL) {
3674 DEBUG(1,(__location__ ": Failed to find account_dn for DSA with objectGUID %s, sid %s\n",
3675 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3676 talloc_free(tmp_ctx);
3677 return LDB_ERR_OPERATIONS_ERROR;
3678 }
3679
3680 status = dsdb_get_extended_dn_sid(account_dn, &sid2, "SID");
3681 if (!NT_STATUS_IS_OK(status)) {
3682 DEBUG(1,(__location__ ": Failed to find SID for DSA with objectGUID %s, sid %s\n",
3683 GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
3684 talloc_free(tmp_ctx);
3685 return LDB_ERR_OPERATIONS_ERROR;
3686 }
3687
3688 if (!dom_sid_equal(sid, &sid2)) {
3689 /* someone is trying to spoof another account */
3690 DEBUG(0,(__location__ ": Bad DSA objectGUID %s for sid %s - expected sid %s\n",
3691 GUID_string(tmp_ctx, dsa_guid),
3692 dom_sid_string(tmp_ctx, sid),
3693 dom_sid_string(tmp_ctx, &sid2)));
3694 talloc_free(tmp_ctx);
3695 return LDB_ERR_OPERATIONS_ERROR;
3696 }
3697
3698 talloc_free(tmp_ctx);
3699 return LDB_SUCCESS;
3700 }
3701
3702 const char *rodc_fas_list[] = {"ms-PKI-DPAPIMasterKeys",
3703 "ms-PKI-AccountCredentials",
3704 "ms-PKI-RoamingTimeStamp",
3705 "ms-FVE-KeyPackage",
3706 "ms-FVE-RecoveryGuid",
3707 "ms-FVE-RecoveryInformation",
3708 "ms-FVE-RecoveryPassword",
3709 "ms-FVE-VolumeGuid",
3710 "ms-TPM-OwnerInformation",
3711 NULL};
3712 /*
3713 check if the attribute belongs to the RODC filtered attribute set
3714 */
3715 bool dsdb_attr_in_rodc_fas(uint32_t replica_flags, const struct dsdb_attribute *sa)
3716 {
3717 int rodc_filtered_flags = SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL;
3718 bool drs_write_replica = ((replica_flags & DRSUAPI_DRS_WRIT_REP) == 0);
3719
3720 if (drs_write_replica && (sa->searchFlags & rodc_filtered_flags)) {
3721 return true;
3722 }
3723 if (drs_write_replica && is_attr_in_list(rodc_fas_list, sa->cn)) {
3724 return true;
3725 }
3726 return false;
3727 }