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libds: UF_PARTIAL_SECRETS_ACCOUNT is a flag, not an account type
[Samba.git] / source4 / dsdb / samdb / ldb_modules / samldb.c
blobf491a0035c7a9d71ca32c136bd61b29763dd0992
1 /*
2 SAM ldb module
3
4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2014
5 Copyright (C) Simo Sorce 2004-2008
6 Copyright (C) Matthias Dieter Wallnöfer 2009-2011
7 Copyright (C) Matthieu Patou 2012
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 /*
24 * Name: ldb
25 *
26 * Component: ldb samldb module
27 *
28 * Description: various internal DSDB triggers - most for SAM specific objects
29 *
30 * Author: Simo Sorce
31 */
32
33 #include "includes.h"
34 #include "libcli/ldap/ldap_ndr.h"
35 #include "ldb_module.h"
36 #include "auth/auth.h"
37 #include "dsdb/samdb/samdb.h"
38 #include "dsdb/samdb/ldb_modules/util.h"
39 #include "dsdb/samdb/ldb_modules/ridalloc.h"
40 #include "libcli/security/security.h"
41 #include "librpc/gen_ndr/ndr_security.h"
42 #include "ldb_wrap.h"
43 #include "param/param.h"
44 #include "libds/common/flag_mapping.h"
45
46 struct samldb_ctx;
47 enum samldb_add_type {
48 SAMLDB_TYPE_USER,
49 SAMLDB_TYPE_GROUP,
50 SAMLDB_TYPE_CLASS,
51 SAMLDB_TYPE_ATTRIBUTE
52 };
53
54 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
55
56 struct samldb_step {
57 struct samldb_step *next;
58 samldb_step_fn_t fn;
59 };
60
61 struct samldb_ctx {
62 struct ldb_module *module;
63 struct ldb_request *req;
64
65 /* used for add operations */
66 enum samldb_add_type type;
67
68 /* the resulting message */
69 struct ldb_message *msg;
70
71 /* used in "samldb_find_for_defaultObjectCategory" */
72 struct ldb_dn *dn, *res_dn;
73
74 /* all the async steps necessary to complete the operation */
75 struct samldb_step *steps;
76 struct samldb_step *curstep;
77
78 /* If someone set an ares to forward controls and response back to the caller */
79 struct ldb_reply *ares;
80 };
81
82 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
83 struct ldb_request *req)
84 {
85 struct ldb_context *ldb;
86 struct samldb_ctx *ac;
87
88 ldb = ldb_module_get_ctx(module);
89
90 ac = talloc_zero(req, struct samldb_ctx);
91 if (ac == NULL) {
92 ldb_oom(ldb);
93 return NULL;
94 }
95
96 ac->module = module;
97 ac->req = req;
98
99 return ac;
100 }
101
102 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
103 {
104 struct samldb_step *step, *stepper;
105
106 step = talloc_zero(ac, struct samldb_step);
107 if (step == NULL) {
108 return ldb_oom(ldb_module_get_ctx(ac->module));
109 }
110
111 step->fn = fn;
112
113 if (ac->steps == NULL) {
114 ac->steps = step;
115 ac->curstep = step;
116 } else {
117 if (ac->curstep == NULL)
118 return ldb_operr(ldb_module_get_ctx(ac->module));
119 for (stepper = ac->curstep; stepper->next != NULL;
120 stepper = stepper->next);
121 stepper->next = step;
122 }
123
124 return LDB_SUCCESS;
125 }
126
127 static int samldb_first_step(struct samldb_ctx *ac)
128 {
129 if (ac->steps == NULL) {
130 return ldb_operr(ldb_module_get_ctx(ac->module));
131 }
132
133 ac->curstep = ac->steps;
134 return ac->curstep->fn(ac);
135 }
136
137 static int samldb_next_step(struct samldb_ctx *ac)
138 {
139 if (ac->curstep->next) {
140 ac->curstep = ac->curstep->next;
141 return ac->curstep->fn(ac);
142 }
143
144 /* We exit the samldb module here. If someone set an "ares" to forward
145 * controls and response back to the caller, use them. */
146 if (ac->ares) {
147 return ldb_module_done(ac->req, ac->ares->controls,
148 ac->ares->response, LDB_SUCCESS);
149 } else {
150 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
151 }
152 }
153
154
155 /* sAMAccountName handling */
156
157 static int samldb_generate_sAMAccountName(struct ldb_context *ldb,
158 struct ldb_message *msg)
159 {
160 char *name;
161
162 /* Format: $000000-000000000000 */
163
164 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
165 (unsigned int)generate_random(),
166 (unsigned int)generate_random(),
167 (unsigned int)generate_random());
168 if (name == NULL) {
169 return ldb_oom(ldb);
170 }
171 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
172 }
173
174 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
175 {
176 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
177 const char *name;
178 int ret;
179 struct ldb_result *res;
180 const char * const noattrs[] = { NULL };
181
182 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
183 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
184 if (ret != LDB_SUCCESS) {
185 return ret;
186 }
187 }
188
189 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
190 if (name == NULL) {
191 /* The "sAMAccountName" cannot be nothing */
192 ldb_set_errstring(ldb,
193 "samldb: Empty account names aren't allowed!");
194 return LDB_ERR_CONSTRAINT_VIOLATION;
195 }
196
197 ret = dsdb_module_search(ac->module, ac, &res,
198 ldb_get_default_basedn(ldb), LDB_SCOPE_SUBTREE, noattrs,
199 DSDB_FLAG_NEXT_MODULE,
200 ac->req,
201 "(sAMAccountName=%s)",
202 ldb_binary_encode_string(ac, name));
203 if (ret != LDB_SUCCESS) {
204 return ret;
205 }
206 if (res->count != 0) {
207 ldb_asprintf_errstring(ldb,
208 "samldb: Account name (sAMAccountName) '%s' already in use!",
209 name);
210 talloc_free(res);
211 return LDB_ERR_ENTRY_ALREADY_EXISTS;
212 }
213 talloc_free(res);
214
215 return samldb_next_step(ac);
216 }
217
218
219 static bool samldb_msg_add_sid(struct ldb_message *msg,
220 const char *name,
221 const struct dom_sid *sid)
222 {
223 struct ldb_val v;
224 enum ndr_err_code ndr_err;
225
226 ndr_err = ndr_push_struct_blob(&v, msg, sid,
227 (ndr_push_flags_fn_t)ndr_push_dom_sid);
228 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
229 return false;
230 }
231 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
232 }
233
234
235 /* allocate a SID using our RID Set */
236 static int samldb_allocate_sid(struct samldb_ctx *ac)
237 {
238 uint32_t rid;
239 struct dom_sid *sid;
240 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
241 int ret;
242
243 ret = ridalloc_allocate_rid(ac->module, &rid, ac->req);
244 if (ret != LDB_SUCCESS) {
245 return ret;
246 }
247
248 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
249 if (sid == NULL) {
250 return ldb_module_oom(ac->module);
251 }
252
253 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
254 return ldb_operr(ldb);
255 }
256
257 return samldb_next_step(ac);
258 }
259
260 /*
261 see if a krbtgt_number is available
262 */
263 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac,
264 uint32_t krbtgt_number)
265 {
266 TALLOC_CTX *tmp_ctx = talloc_new(ac);
267 struct ldb_result *res;
268 const char * const no_attrs[] = { NULL };
269 int ret;
270
271 ret = dsdb_module_search(ac->module, tmp_ctx, &res,
272 ldb_get_default_basedn(ldb_module_get_ctx(ac->module)),
273 LDB_SCOPE_SUBTREE, no_attrs,
274 DSDB_FLAG_NEXT_MODULE,
275 ac->req,
276 "(msDC-SecondaryKrbTgtNumber=%u)",
277 krbtgt_number);
278 if (ret == LDB_SUCCESS && res->count == 0) {
279 talloc_free(tmp_ctx);
280 return true;
281 }
282 talloc_free(tmp_ctx);
283 return false;
284 }
285
286 /* special handling for add in RODC join */
287 static int samldb_rodc_add(struct samldb_ctx *ac)
288 {
289 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
290 uint32_t krbtgt_number, i_start, i;
291 int ret;
292 char *newpass;
293 struct ldb_val newpass_utf16;
294
295 /* find a unused msDC-SecondaryKrbTgtNumber */
296 i_start = generate_random() & 0xFFFF;
297 if (i_start == 0) {
298 i_start = 1;
299 }
300
301 for (i=i_start; i<=0xFFFF; i++) {
302 if (samldb_krbtgtnumber_available(ac, i)) {
303 krbtgt_number = i;
304 goto found;
305 }
306 }
307 for (i=1; i<i_start; i++) {
308 if (samldb_krbtgtnumber_available(ac, i)) {
309 krbtgt_number = i;
310 goto found;
311 }
312 }
313
314 ldb_asprintf_errstring(ldb,
315 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
316 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
317 return LDB_ERR_OTHER;
318
319 found:
320 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber",
321 LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
322 if (ret != LDB_SUCCESS) {
323 return ldb_operr(ldb);
324 }
325
326 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
327 "msDS-SecondaryKrbTgtNumber", krbtgt_number);
328 if (ret != LDB_SUCCESS) {
329 return ldb_operr(ldb);
330 }
331
332 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u",
333 krbtgt_number);
334 if (ret != LDB_SUCCESS) {
335 return ldb_operr(ldb);
336 }
337
338 newpass = generate_random_password(ac->msg, 128, 255);
339 if (newpass == NULL) {
340 return ldb_operr(ldb);
341 }
342
343 if (!convert_string_talloc(ac,
344 CH_UNIX, CH_UTF16,
345 newpass, strlen(newpass),
346 (void *)&newpass_utf16.data,
347 &newpass_utf16.length)) {
348 ldb_asprintf_errstring(ldb,
349 "samldb_rodc_add: "
350 "failed to generate UTF16 password from random password");
351 return LDB_ERR_OPERATIONS_ERROR;
352 }
353 ret = ldb_msg_add_steal_value(ac->msg, "clearTextPassword", &newpass_utf16);
354 if (ret != LDB_SUCCESS) {
355 return ldb_operr(ldb);
356 }
357
358 return samldb_next_step(ac);
359 }
360
361 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
362 {
363 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
364 struct ldb_result *res;
365 const char * const no_attrs[] = { NULL };
366 int ret;
367
368 ac->res_dn = NULL;
369
370 ret = dsdb_module_search(ac->module, ac, &res,
371 ac->dn, LDB_SCOPE_BASE, no_attrs,
372 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT
373 | DSDB_FLAG_NEXT_MODULE,
374 ac->req,
375 "(objectClass=classSchema)");
376 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
377 /* Don't be pricky when the DN doesn't exist if we have the */
378 /* RELAX control specified */
379 if (ldb_request_get_control(ac->req,
380 LDB_CONTROL_RELAX_OID) == NULL) {
381 ldb_set_errstring(ldb,
382 "samldb_find_defaultObjectCategory: "
383 "Invalid DN for 'defaultObjectCategory'!");
384 return LDB_ERR_CONSTRAINT_VIOLATION;
385 }
386 }
387 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
388 return ret;
389 }
390
391 if (ret == LDB_SUCCESS) {
392 /* ensure the defaultObjectCategory has a full GUID */
393 struct ldb_message *m;
394 m = ldb_msg_new(ac->msg);
395 if (m == NULL) {
396 return ldb_oom(ldb);
397 }
398 m->dn = ac->msg->dn;
399 if (ldb_msg_add_string(m, "defaultObjectCategory",
400 ldb_dn_get_extended_linearized(m, res->msgs[0]->dn, 1)) !=
401 LDB_SUCCESS) {
402 return ldb_oom(ldb);
403 }
404 m->elements[0].flags = LDB_FLAG_MOD_REPLACE;
405
406 ret = dsdb_module_modify(ac->module, m,
407 DSDB_FLAG_NEXT_MODULE,
408 ac->req);
409 if (ret != LDB_SUCCESS) {
410 return ret;
411 }
412 }
413
414
415 ac->res_dn = ac->dn;
416
417 return samldb_next_step(ac);
418 }
419
420 /**
421 * msDS-IntId attributeSchema attribute handling
422 * during LDB_ADD request processing
423 */
424 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
425 {
426 int ret;
427 bool id_exists;
428 uint32_t msds_intid;
429 int32_t system_flags;
430 struct ldb_context *ldb;
431 struct ldb_result *ldb_res;
432 struct ldb_dn *schema_dn;
433 struct samldb_msds_intid_persistant *msds_intid_struct;
434 struct dsdb_schema *schema;
435
436 ldb = ldb_module_get_ctx(ac->module);
437 schema_dn = ldb_get_schema_basedn(ldb);
438
439 /* replicated update should always go through */
440 if (ldb_request_get_control(ac->req,
441 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
442 return LDB_SUCCESS;
443 }
444
445 /* msDS-IntId is handled by system and should never be
446 * passed by clients */
447 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
448 return LDB_ERR_UNWILLING_TO_PERFORM;
449 }
450
451 /* do not generate msDS-IntId if Relax control is passed */
452 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
453 return LDB_SUCCESS;
454 }
455
456 /* check Functional Level */
457 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
458 return LDB_SUCCESS;
459 }
460
461 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
462 system_flags = ldb_msg_find_attr_as_int(ac->msg, "systemFlags", 0);
463 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
464 return LDB_SUCCESS;
465 }
466 schema = dsdb_get_schema(ldb, NULL);
467 if (!schema) {
468 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
469 "samldb_schema_info_update: no dsdb_schema loaded");
470 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
471 return ldb_operr(ldb);
472 }
473
474 msds_intid_struct = (struct samldb_msds_intid_persistant*) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
475 if (!msds_intid_struct) {
476 msds_intid_struct = talloc(ldb, struct samldb_msds_intid_persistant);
477 /* Generate new value for msDs-IntId
478 * Value should be in 0x80000000..0xBFFFFFFF range */
479 msds_intid = generate_random() % 0X3FFFFFFF;
480 msds_intid += 0x80000000;
481 msds_intid_struct->msds_intid = msds_intid;
482 msds_intid_struct->usn = schema->loaded_usn;
483 DEBUG(2, ("No samldb_msds_intid_persistant struct, allocating a new one\n"));
484 } else {
485 msds_intid = msds_intid_struct->msds_intid;
486 }
487
488 /* probe id values until unique one is found */
489 do {
490 uint64_t current_usn;
491 msds_intid++;
492 if (msds_intid > 0xBFFFFFFF) {
493 msds_intid = 0x80000001;
494 }
495 /*
496 * Alternative strategy to a costly (even indexed search) to the
497 * database.
498 * We search in the schema if we have already this intid (using dsdb_attribute_by_attributeID_id because
499 * in the range 0x80000000 0xBFFFFFFFF, attributeID is a DSDB_ATTID_TYPE_INTID).
500 * If so generate another random value.
501 * If not check if the highest USN in the database for the schema partition is the
502 * one that we know.
503 * If so it means that's only this ldb context that is touching the schema in the database.
504 * If not it means that's someone else has modified the database while we are doing our changes too
505 * (this case should be very bery rare) in order to be sure do the search in the database.
506 */
507 if (dsdb_attribute_by_attributeID_id(schema, msds_intid)) {
508 msds_intid = generate_random() % 0X3FFFFFFF;
509 msds_intid += 0x80000000;
510 continue;
511 }
512
513 ret = dsdb_module_load_partition_usn(ac->module, schema_dn,
514 &current_usn, NULL, NULL);
515 if (ret != LDB_SUCCESS) {
516 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
517 __location__": Searching for schema USN failed: %s\n",
518 ldb_errstring(ldb));
519 return ldb_operr(ldb);
520 }
521
522 /* current_usn can be lesser than msds_intid_struct-> if there is
523 * uncommited changes.
524 */
525 if (current_usn > msds_intid_struct->usn) {
526 /* oups something has changed, someone/something
527 * else is modifying or has modified the schema
528 * we'd better check this intid is the database directly
529 */
530
531 DEBUG(2, ("Schema has changed, searching the database for the unicity of %d\n",
532 msds_intid));
533
534 ret = dsdb_module_search(ac->module, ac,
535 &ldb_res,
536 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
537 DSDB_FLAG_NEXT_MODULE,
538 ac->req,
539 "(msDS-IntId=%d)", msds_intid);
540 if (ret != LDB_SUCCESS) {
541 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
542 __location__": Searching for msDS-IntId=%d failed - %s\n",
543 msds_intid,
544 ldb_errstring(ldb));
545 return ldb_operr(ldb);
546 }
547 id_exists = (ldb_res->count > 0);
548 talloc_free(ldb_res);
549 } else {
550 id_exists = 0;
551 }
552
553 } while(id_exists);
554 msds_intid_struct->msds_intid = msds_intid;
555 ldb_set_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE, msds_intid_struct);
556
557 return samdb_msg_add_int(ldb, ac->msg, ac->msg, "msDS-IntId",
558 msds_intid);
559 }
560
561
562 /*
563 * samldb_add_entry (async)
564 */
565
566 static int samldb_add_entry_callback(struct ldb_request *req,
567 struct ldb_reply *ares)
568 {
569 struct ldb_context *ldb;
570 struct samldb_ctx *ac;
571 int ret;
572
573 ac = talloc_get_type(req->context, struct samldb_ctx);
574 ldb = ldb_module_get_ctx(ac->module);
575
576 if (!ares) {
577 return ldb_module_done(ac->req, NULL, NULL,
578 LDB_ERR_OPERATIONS_ERROR);
579 }
580
581 if (ares->type == LDB_REPLY_REFERRAL) {
582 return ldb_module_send_referral(ac->req, ares->referral);
583 }
584
585 if (ares->error != LDB_SUCCESS) {
586 return ldb_module_done(ac->req, ares->controls,
587 ares->response, ares->error);
588 }
589 if (ares->type != LDB_REPLY_DONE) {
590 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
591 return ldb_module_done(ac->req, NULL, NULL,
592 LDB_ERR_OPERATIONS_ERROR);
593 }
594
595 /* The caller may wish to get controls back from the add */
596 ac->ares = talloc_steal(ac, ares);
597
598 ret = samldb_next_step(ac);
599 if (ret != LDB_SUCCESS) {
600 return ldb_module_done(ac->req, NULL, NULL, ret);
601 }
602 return ret;
603 }
604
605 static int samldb_add_entry(struct samldb_ctx *ac)
606 {
607 struct ldb_context *ldb;
608 struct ldb_request *req;
609 int ret;
610
611 ldb = ldb_module_get_ctx(ac->module);
612
613 ret = ldb_build_add_req(&req, ldb, ac,
614 ac->msg,
615 ac->req->controls,
616 ac, samldb_add_entry_callback,
617 ac->req);
618 LDB_REQ_SET_LOCATION(req);
619 if (ret != LDB_SUCCESS) {
620 return ret;
621 }
622
623 return ldb_next_request(ac->module, req);
624 }
625
626 /*
627 * return true if msg carries an attributeSchema that is intended to be RODC
628 * filtered but is also a system-critical attribute.
629 */
630 static bool check_rodc_critical_attribute(struct ldb_message *msg)
631 {
632 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
633
634 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
635 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
636 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE
637 | SEARCH_FLAG_CONFIDENTIAL);
638
639 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
640 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
641 return true;
642 } else {
643 return false;
644 }
645 }
646
647
648 static int samldb_fill_object(struct samldb_ctx *ac)
649 {
650 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
651 int ret;
652
653 /* Add information for the different account types */
654 switch(ac->type) {
655 case SAMLDB_TYPE_USER: {
656 struct ldb_control *rodc_control = ldb_request_get_control(ac->req,
657 LDB_CONTROL_RODC_DCPROMO_OID);
658 if (rodc_control != NULL) {
659 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
660 rodc_control->critical = false;
661 ret = samldb_add_step(ac, samldb_rodc_add);
662 if (ret != LDB_SUCCESS) return ret;
663 }
664
665 /* check if we have a valid sAMAccountName */
666 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
667 if (ret != LDB_SUCCESS) return ret;
668
669 ret = samldb_add_step(ac, samldb_add_entry);
670 if (ret != LDB_SUCCESS) return ret;
671 break;
672 }
673
674 case SAMLDB_TYPE_GROUP: {
675 /* check if we have a valid sAMAccountName */
676 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
677 if (ret != LDB_SUCCESS) return ret;
678
679 ret = samldb_add_step(ac, samldb_add_entry);
680 if (ret != LDB_SUCCESS) return ret;
681 break;
682 }
683
684 case SAMLDB_TYPE_CLASS: {
685 const struct ldb_val *rdn_value, *def_obj_cat_val;
686 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "objectClassCategory", -2);
687
688 /* As discussed with Microsoft through dochelp in April 2012 this is the behavior of windows*/
689 if (!ldb_msg_find_element(ac->msg, "subClassOf")) {
690 ret = ldb_msg_add_string(ac->msg, "subClassOf", "top");
691 if (ret != LDB_SUCCESS) return ret;
692 }
693
694 ret = samdb_find_or_add_attribute(ldb, ac->msg,
695 "rdnAttId", "cn");
696 if (ret != LDB_SUCCESS) return ret;
697
698 /* do not allow to mark an attributeSchema as RODC filtered if it
699 * is system-critical */
700 if (check_rodc_critical_attribute(ac->msg)) {
701 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
702 ldb_dn_get_linearized(ac->msg->dn));
703 return LDB_ERR_UNWILLING_TO_PERFORM;
704 }
705
706 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
707 if (rdn_value == NULL) {
708 return ldb_operr(ldb);
709 }
710 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
711 /* the RDN has prefix "CN" */
712 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
713 samdb_cn_to_lDAPDisplayName(ac->msg,
714 (const char *) rdn_value->data));
715 if (ret != LDB_SUCCESS) {
716 ldb_oom(ldb);
717 return ret;
718 }
719 }
720
721 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
722 struct GUID guid;
723 /* a new GUID */
724 guid = GUID_random();
725 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
726 if (ret != LDB_SUCCESS) {
727 ldb_oom(ldb);
728 return ret;
729 }
730 }
731
732 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
733 "defaultObjectCategory");
734 if (def_obj_cat_val != NULL) {
735 /* "defaultObjectCategory" has been set by the caller.
736 * Do some checks for consistency.
737 * NOTE: The real constraint check (that
738 * 'defaultObjectCategory' is the DN of the new
739 * objectclass or any parent of it) is still incomplete.
740 * For now we say that 'defaultObjectCategory' is valid
741 * if it exists and it is of objectclass "classSchema".
742 */
743 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
744 if (ac->dn == NULL) {
745 ldb_set_errstring(ldb,
746 "Invalid DN for 'defaultObjectCategory'!");
747 return LDB_ERR_CONSTRAINT_VIOLATION;
748 }
749 } else {
750 /* "defaultObjectCategory" has not been set by the
751 * caller. Use the entry DN for it. */
752 ac->dn = ac->msg->dn;
753
754 ret = ldb_msg_add_string(ac->msg, "defaultObjectCategory",
755 ldb_dn_alloc_linearized(ac->msg, ac->dn));
756 if (ret != LDB_SUCCESS) {
757 ldb_oom(ldb);
758 return ret;
759 }
760 }
761
762 ret = samldb_add_step(ac, samldb_add_entry);
763 if (ret != LDB_SUCCESS) return ret;
764
765 /* Now perform the checks for the 'defaultObjectCategory'. The
766 * lookup DN was already saved in "ac->dn" */
767 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
768 if (ret != LDB_SUCCESS) return ret;
769
770 /* -2 is not a valid objectClassCategory so it means the attribute wasn't present */
771 if (v == -2) {
772 /* Windows 2003 does this*/
773 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "objectClassCategory", 0);
774 if (ret != LDB_SUCCESS) {
775 return ret;
776 }
777 }
778 break;
779 }
780
781 case SAMLDB_TYPE_ATTRIBUTE: {
782 const struct ldb_val *rdn_value;
783 struct ldb_message_element *el;
784 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
785 if (rdn_value == NULL) {
786 return ldb_operr(ldb);
787 }
788 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
789 /* the RDN has prefix "CN" */
790 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
791 samdb_cn_to_lDAPDisplayName(ac->msg,
792 (const char *) rdn_value->data));
793 if (ret != LDB_SUCCESS) {
794 ldb_oom(ldb);
795 return ret;
796 }
797 }
798
799 /* do not allow to mark an attributeSchema as RODC filtered if it
800 * is system-critical */
801 if (check_rodc_critical_attribute(ac->msg)) {
802 ldb_asprintf_errstring(ldb,
803 "samldb: refusing schema add of %s - cannot combine critical attribute with RODC filtering",
804 ldb_dn_get_linearized(ac->msg->dn));
805 return LDB_ERR_UNWILLING_TO_PERFORM;
806 }
807
808 ret = samdb_find_or_add_attribute(ldb, ac->msg,
809 "isSingleValued", "FALSE");
810 if (ret != LDB_SUCCESS) return ret;
811
812 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
813 struct GUID guid;
814 /* a new GUID */
815 guid = GUID_random();
816 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
817 if (ret != LDB_SUCCESS) {
818 ldb_oom(ldb);
819 return ret;
820 }
821 }
822
823 el = ldb_msg_find_element(ac->msg, "attributeSyntax");
824 if (el) {
825 /*
826 * No need to scream if there isn't as we have code later on
827 * that will take care of it.
828 */
829 const struct dsdb_syntax *syntax = find_syntax_map_by_ad_oid((const char *)el->values[0].data);
830 if (!syntax) {
831 DEBUG(9, ("Can't find dsdb_syntax object for attributeSyntax %s\n",
832 (const char *)el->values[0].data));
833 } else {
834 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "oMSyntax", 0);
835 const struct ldb_val *val = ldb_msg_find_ldb_val(ac->msg, "oMObjectClass");
836
837 if (v == 0) {
838 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "oMSyntax", syntax->oMSyntax);
839 if (ret != LDB_SUCCESS) {
840 return ret;
841 }
842 }
843 if (!val) {
844 struct ldb_val val2 = ldb_val_dup(ldb, &syntax->oMObjectClass);
845 if (val2.length > 0) {
846 ret = ldb_msg_add_value(ac->msg, "oMObjectClass", &val2, NULL);
847 if (ret != LDB_SUCCESS) {
848 return ret;
849 }
850 }
851 }
852 }
853 }
854
855 /* handle msDS-IntID attribute */
856 ret = samldb_add_handle_msDS_IntId(ac);
857 if (ret != LDB_SUCCESS) return ret;
858
859 ret = samldb_add_step(ac, samldb_add_entry);
860 if (ret != LDB_SUCCESS) return ret;
861 break;
862 }
863
864 default:
865 ldb_asprintf_errstring(ldb, "Invalid entry type!");
866 return LDB_ERR_OPERATIONS_ERROR;
867 break;
868 }
869
870 return samldb_first_step(ac);
871 }
872
873 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
874 {
875 struct ldb_context *ldb;
876 const struct ldb_val *rdn_value;
877 struct dom_sid *sid;
878 int ret;
879
880 ldb = ldb_module_get_ctx(ac->module);
881
882 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
883 if (sid == NULL) {
884 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
885 if (rdn_value == NULL) {
886 return ldb_operr(ldb);
887 }
888 sid = dom_sid_parse_talloc(ac->msg,
889 (const char *)rdn_value->data);
890 if (sid == NULL) {
891 ldb_set_errstring(ldb,
892 "samldb: No valid SID found in ForeignSecurityPrincipal CN!");
893 return LDB_ERR_CONSTRAINT_VIOLATION;
894 }
895 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
896 return ldb_operr(ldb);
897 }
898 }
899
900 /* finally proceed with adding the entry */
901 ret = samldb_add_step(ac, samldb_add_entry);
902 if (ret != LDB_SUCCESS) return ret;
903
904 return samldb_first_step(ac);
905 }
906
907 static int samldb_schema_info_update(struct samldb_ctx *ac)
908 {
909 int ret;
910 struct ldb_context *ldb;
911 struct dsdb_schema *schema;
912
913 /* replicated update should always go through */
914 if (ldb_request_get_control(ac->req,
915 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
916 return LDB_SUCCESS;
917 }
918
919 /* do not update schemaInfo during provisioning */
920 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
921 return LDB_SUCCESS;
922 }
923
924 ldb = ldb_module_get_ctx(ac->module);
925 schema = dsdb_get_schema(ldb, NULL);
926 if (!schema) {
927 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
928 "samldb_schema_info_update: no dsdb_schema loaded");
929 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
930 return ldb_operr(ldb);
931 }
932
933 ret = dsdb_module_schema_info_update(ac->module, schema,
934 DSDB_FLAG_NEXT_MODULE|
935 DSDB_FLAG_AS_SYSTEM,
936 ac->req);
937 if (ret != LDB_SUCCESS) {
938 ldb_asprintf_errstring(ldb,
939 "samldb_schema_info_update: dsdb_module_schema_info_update failed with %s",
940 ldb_errstring(ldb));
941 return ret;
942 }
943
944 return LDB_SUCCESS;
945 }
946
947 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid);
948 static int samldb_check_user_account_control_acl(struct samldb_ctx *ac,
949 struct dom_sid *sid,
950 uint32_t user_account_control,
951 uint32_t user_account_control_old);
952
953 /*
954 * "Objectclass" trigger (MS-SAMR 3.1.1.8.1)
955 *
956 * Has to be invoked on "add" and "modify" operations on "user", "computer" and
957 * "group" objects.
958 * ac->msg contains the "add"/"modify" message
959 * ac->type contains the object type (main objectclass)
960 */
961 static int samldb_objectclass_trigger(struct samldb_ctx *ac)
962 {
963 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
964 void *skip_allocate_sids = ldb_get_opaque(ldb,
965 "skip_allocate_sids");
966 struct ldb_message_element *el, *el2;
967 struct dom_sid *sid;
968 int ret;
969
970 /* make sure that "sAMAccountType" is not specified */
971 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
972 if (el != NULL) {
973 ldb_set_errstring(ldb,
974 "samldb: sAMAccountType must not be specified!");
975 return LDB_ERR_UNWILLING_TO_PERFORM;
976 }
977
978 /* Step 1: objectSid assignment */
979
980 /* Don't allow the objectSid to be changed. But beside the RELAX
981 * control we have also to guarantee that it can always be set with
982 * SYSTEM permissions. This is needed for the "samba3sam" backend. */
983 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
984 if ((sid != NULL) && (!dsdb_module_am_system(ac->module)) &&
985 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
986 ldb_set_errstring(ldb,
987 "samldb: objectSid must not be specified!");
988 return LDB_ERR_UNWILLING_TO_PERFORM;
989 }
990
991 /* but generate a new SID when we do have an add operations */
992 if ((sid == NULL) && (ac->req->operation == LDB_ADD) && !skip_allocate_sids) {
993 ret = samldb_add_step(ac, samldb_allocate_sid);
994 if (ret != LDB_SUCCESS) return ret;
995 }
996
997 switch(ac->type) {
998 case SAMLDB_TYPE_USER: {
999 bool uac_generated = false, uac_add_flags = false;
1000
1001 /* Step 1.2: Default values */
1002 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1003 "accountExpires", "9223372036854775807");
1004 if (ret != LDB_SUCCESS) return ret;
1005 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1006 "badPasswordTime", "0");
1007 if (ret != LDB_SUCCESS) return ret;
1008 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1009 "badPwdCount", "0");
1010 if (ret != LDB_SUCCESS) return ret;
1011 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1012 "codePage", "0");
1013 if (ret != LDB_SUCCESS) return ret;
1014 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1015 "countryCode", "0");
1016 if (ret != LDB_SUCCESS) return ret;
1017 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1018 "lastLogoff", "0");
1019 if (ret != LDB_SUCCESS) return ret;
1020 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1021 "lastLogon", "0");
1022 if (ret != LDB_SUCCESS) return ret;
1023 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1024 "logonCount", "0");
1025 if (ret != LDB_SUCCESS) return ret;
1026 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1027 "pwdLastSet", "0");
1028 if (ret != LDB_SUCCESS) return ret;
1029
1030 /* On add operations we might need to generate a
1031 * "userAccountControl" (if it isn't specified). */
1032 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1033 if ((el == NULL) && (ac->req->operation == LDB_ADD)) {
1034 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1035 "userAccountControl",
1036 UF_NORMAL_ACCOUNT);
1037 if (ret != LDB_SUCCESS) {
1038 return ret;
1039 }
1040 uac_generated = true;
1041 uac_add_flags = true;
1042 }
1043
1044 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1045 if (el != NULL) {
1046 uint32_t user_account_control, account_type;
1047 /* Step 1.3: "userAccountControl" -> "sAMAccountType" mapping */
1048 user_account_control = ldb_msg_find_attr_as_uint(ac->msg,
1049 "userAccountControl",
1050 0);
1051 /* "userAccountControl" = 0 means "UF_NORMAL_ACCOUNT" */
1052 if (user_account_control == 0) {
1053 user_account_control = UF_NORMAL_ACCOUNT;
1054 uac_generated = true;
1055 }
1056
1057 /*
1058 * As per MS-SAMR 3.1.1.8.10 these flags have not to be set
1059 */
1060 if ((user_account_control & UF_LOCKOUT) != 0) {
1061 user_account_control &= ~UF_LOCKOUT;
1062 uac_generated = true;
1063 }
1064 if ((user_account_control & UF_PASSWORD_EXPIRED) != 0) {
1065 user_account_control &= ~UF_PASSWORD_EXPIRED;
1066 uac_generated = true;
1067 }
1068
1069 /* Temporary duplicate accounts aren't allowed */
1070 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1071 return LDB_ERR_OTHER;
1072 }
1073
1074 /* Workstation and (read-only) DC objects do need objectclass "computer" */
1075 if ((samdb_find_attribute(ldb, ac->msg,
1076 "objectclass", "computer") == NULL) &&
1077 (user_account_control &
1078 (UF_SERVER_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT))) {
1079 ldb_set_errstring(ldb,
1080 "samldb: Requested account type does need objectclass 'computer'!");
1081 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1082 }
1083
1084 account_type = ds_uf2atype(user_account_control);
1085 if (account_type == 0) {
1086 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1087 return LDB_ERR_UNWILLING_TO_PERFORM;
1088 }
1089 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1090 "sAMAccountType",
1091 account_type);
1092 if (ret != LDB_SUCCESS) {
1093 return ret;
1094 }
1095 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1096 el2->flags = LDB_FLAG_MOD_REPLACE;
1097
1098 /* "isCriticalSystemObject" might be set */
1099 if (user_account_control &
1100 (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1101 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1102 "TRUE");
1103 if (ret != LDB_SUCCESS) {
1104 return ret;
1105 }
1106 el2 = ldb_msg_find_element(ac->msg,
1107 "isCriticalSystemObject");
1108 el2->flags = LDB_FLAG_MOD_REPLACE;
1109 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1110 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1111 "FALSE");
1112 if (ret != LDB_SUCCESS) {
1113 return ret;
1114 }
1115 el2 = ldb_msg_find_element(ac->msg,
1116 "isCriticalSystemObject");
1117 el2->flags = LDB_FLAG_MOD_REPLACE;
1118 }
1119
1120 /* Step 1.4: "userAccountControl" -> "primaryGroupID" mapping */
1121 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1122 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1123
1124 /*
1125 * Older AD deployments don't know about the
1126 * RODC group
1127 */
1128 if (rid == DOMAIN_RID_READONLY_DCS) {
1129 ret = samldb_prim_group_tester(ac, rid);
1130 if (ret != LDB_SUCCESS) {
1131 return ret;
1132 }
1133 }
1134
1135 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1136 "primaryGroupID", rid);
1137 if (ret != LDB_SUCCESS) {
1138 return ret;
1139 }
1140 el2 = ldb_msg_find_element(ac->msg,
1141 "primaryGroupID");
1142 el2->flags = LDB_FLAG_MOD_REPLACE;
1143 }
1144
1145 /* Step 1.5: Add additional flags when needed */
1146 /* Obviously this is done when the "userAccountControl"
1147 * has been generated here (tested against Windows
1148 * Server) */
1149 if (uac_generated) {
1150 if (uac_add_flags) {
1151 user_account_control |= UF_ACCOUNTDISABLE;
1152 user_account_control |= UF_PASSWD_NOTREQD;
1153 }
1154
1155 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1156 "userAccountControl",
1157 user_account_control);
1158 if (ret != LDB_SUCCESS) {
1159 return ret;
1160 }
1161 }
1162
1163 ret = samldb_check_user_account_control_acl(ac, NULL,
1164 user_account_control, 0);
1165 if (ret != LDB_SUCCESS) {
1166 return ret;
1167 }
1168 }
1169 break;
1170 }
1171
1172 case SAMLDB_TYPE_GROUP: {
1173 const char *tempstr;
1174
1175 /* Step 2.2: Default values */
1176 tempstr = talloc_asprintf(ac->msg, "%d",
1177 GTYPE_SECURITY_GLOBAL_GROUP);
1178 if (tempstr == NULL) return ldb_operr(ldb);
1179 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1180 "groupType", tempstr);
1181 if (ret != LDB_SUCCESS) return ret;
1182
1183 /* Step 2.3: "groupType" -> "sAMAccountType" */
1184 el = ldb_msg_find_element(ac->msg, "groupType");
1185 if (el != NULL) {
1186 uint32_t group_type, account_type;
1187
1188 group_type = ldb_msg_find_attr_as_uint(ac->msg,
1189 "groupType", 0);
1190
1191 /* The creation of builtin groups requires the
1192 * RELAX control */
1193 if (group_type == GTYPE_SECURITY_BUILTIN_LOCAL_GROUP) {
1194 if (ldb_request_get_control(ac->req,
1195 LDB_CONTROL_RELAX_OID) == NULL) {
1196 return LDB_ERR_UNWILLING_TO_PERFORM;
1197 }
1198 }
1199
1200 account_type = ds_gtype2atype(group_type);
1201 if (account_type == 0) {
1202 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1203 return LDB_ERR_UNWILLING_TO_PERFORM;
1204 }
1205 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1206 "sAMAccountType",
1207 account_type);
1208 if (ret != LDB_SUCCESS) {
1209 return ret;
1210 }
1211 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1212 el2->flags = LDB_FLAG_MOD_REPLACE;
1213 }
1214 break;
1215 }
1216
1217 default:
1218 ldb_asprintf_errstring(ldb,
1219 "Invalid entry type!");
1220 return LDB_ERR_OPERATIONS_ERROR;
1221 break;
1222 }
1223
1224 return LDB_SUCCESS;
1225 }
1226
1227 /*
1228 * "Primary group ID" trigger (MS-SAMR 3.1.1.8.2)
1229 *
1230 * Has to be invoked on "add" and "modify" operations on "user" and "computer"
1231 * objects.
1232 * ac->msg contains the "add"/"modify" message
1233 */
1234
1235 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid)
1236 {
1237 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1238 struct dom_sid *sid;
1239 struct ldb_result *res;
1240 int ret;
1241 const char * const noattrs[] = { NULL };
1242
1243 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1244 if (sid == NULL) {
1245 return ldb_operr(ldb);
1246 }
1247
1248 ret = dsdb_module_search(ac->module, ac, &res,
1249 ldb_get_default_basedn(ldb),
1250 LDB_SCOPE_SUBTREE,
1251 noattrs, DSDB_FLAG_NEXT_MODULE,
1252 ac->req,
1253 "(objectSid=%s)",
1254 ldap_encode_ndr_dom_sid(ac, sid));
1255 if (ret != LDB_SUCCESS) {
1256 return ret;
1257 }
1258 if (res->count != 1) {
1259 talloc_free(res);
1260 ldb_asprintf_errstring(ldb,
1261 "Failed to find primary group with RID %u!",
1262 rid);
1263 return LDB_ERR_UNWILLING_TO_PERFORM;
1264 }
1265 talloc_free(res);
1266
1267 return LDB_SUCCESS;
1268 }
1269
1270 static int samldb_prim_group_set(struct samldb_ctx *ac)
1271 {
1272 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1273 uint32_t rid;
1274
1275 rid = ldb_msg_find_attr_as_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1276 if (rid == (uint32_t) -1) {
1277 /* we aren't affected of any primary group set */
1278 return LDB_SUCCESS;
1279
1280 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1281 ldb_set_errstring(ldb,
1282 "The primary group isn't settable on add operations!");
1283 return LDB_ERR_UNWILLING_TO_PERFORM;
1284 }
1285
1286 return samldb_prim_group_tester(ac, rid);
1287 }
1288
1289 static int samldb_prim_group_change(struct samldb_ctx *ac)
1290 {
1291 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1292 const char * const attrs[] = { "primaryGroupID", "memberOf", NULL };
1293 struct ldb_result *res, *group_res;
1294 struct ldb_message_element *el;
1295 struct ldb_message *msg;
1296 uint32_t prev_rid, new_rid;
1297 struct dom_sid *prev_sid, *new_sid;
1298 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1299 int ret;
1300 const char * const noattrs[] = { NULL };
1301
1302 el = dsdb_get_single_valued_attr(ac->msg, "primaryGroupID",
1303 ac->req->operation);
1304 if (el == NULL) {
1305 /* we are not affected */
1306 return LDB_SUCCESS;
1307 }
1308
1309 /* Fetch information from the existing object */
1310
1311 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1312 DSDB_FLAG_NEXT_MODULE, ac->req);
1313 if (ret != LDB_SUCCESS) {
1314 return ret;
1315 }
1316
1317 /* Finds out the DN of the old primary group */
1318
1319 prev_rid = ldb_msg_find_attr_as_uint(res->msgs[0], "primaryGroupID",
1320 (uint32_t) -1);
1321 if (prev_rid == (uint32_t) -1) {
1322 /* User objects do always have a mandatory "primaryGroupID"
1323 * attribute. If this doesn't exist then the object is of the
1324 * wrong type. This is the exact Windows error code */
1325 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1326 }
1327
1328 prev_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), prev_rid);
1329 if (prev_sid == NULL) {
1330 return ldb_operr(ldb);
1331 }
1332
1333 /* Finds out the DN of the new primary group
1334 * Notice: in order to parse the primary group ID correctly we create
1335 * a temporary message here. */
1336
1337 msg = ldb_msg_new(ac->msg);
1338 if (msg == NULL) {
1339 return ldb_module_oom(ac->module);
1340 }
1341 ret = ldb_msg_add(msg, el, 0);
1342 if (ret != LDB_SUCCESS) {
1343 return ret;
1344 }
1345 new_rid = ldb_msg_find_attr_as_uint(msg, "primaryGroupID", (uint32_t) -1);
1346 talloc_free(msg);
1347 if (new_rid == (uint32_t) -1) {
1348 /* we aren't affected of any primary group change */
1349 return LDB_SUCCESS;
1350 }
1351
1352 if (prev_rid == new_rid) {
1353 return LDB_SUCCESS;
1354 }
1355
1356 ret = dsdb_module_search(ac->module, ac, &group_res,
1357 ldb_get_default_basedn(ldb),
1358 LDB_SCOPE_SUBTREE,
1359 noattrs, DSDB_FLAG_NEXT_MODULE,
1360 ac->req,
1361 "(objectSid=%s)",
1362 ldap_encode_ndr_dom_sid(ac, prev_sid));
1363 if (ret != LDB_SUCCESS) {
1364 return ret;
1365 }
1366 if (group_res->count != 1) {
1367 return ldb_operr(ldb);
1368 }
1369 prev_prim_group_dn = group_res->msgs[0]->dn;
1370
1371 new_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), new_rid);
1372 if (new_sid == NULL) {
1373 return ldb_operr(ldb);
1374 }
1375
1376 ret = dsdb_module_search(ac->module, ac, &group_res,
1377 ldb_get_default_basedn(ldb),
1378 LDB_SCOPE_SUBTREE,
1379 noattrs, DSDB_FLAG_NEXT_MODULE,
1380 ac->req,
1381 "(objectSid=%s)",
1382 ldap_encode_ndr_dom_sid(ac, new_sid));
1383 if (ret != LDB_SUCCESS) {
1384 return ret;
1385 }
1386 if (group_res->count != 1) {
1387 /* Here we know if the specified new primary group candidate is
1388 * valid or not. */
1389 return LDB_ERR_UNWILLING_TO_PERFORM;
1390 }
1391 new_prim_group_dn = group_res->msgs[0]->dn;
1392
1393 /* We need to be already a normal member of the new primary
1394 * group in order to be successful. */
1395 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1396 ldb_dn_get_linearized(new_prim_group_dn));
1397 if (el == NULL) {
1398 return LDB_ERR_UNWILLING_TO_PERFORM;
1399 }
1400
1401 /* Remove the "member" attribute on the new primary group */
1402 msg = ldb_msg_new(ac->msg);
1403 if (msg == NULL) {
1404 return ldb_module_oom(ac->module);
1405 }
1406 msg->dn = new_prim_group_dn;
1407
1408 ret = samdb_msg_add_delval(ldb, msg, msg, "member",
1409 ldb_dn_get_linearized(ac->msg->dn));
1410 if (ret != LDB_SUCCESS) {
1411 return ret;
1412 }
1413
1414 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1415 if (ret != LDB_SUCCESS) {
1416 return ret;
1417 }
1418 talloc_free(msg);
1419
1420 /* Add a "member" attribute for the previous primary group */
1421 msg = ldb_msg_new(ac->msg);
1422 if (msg == NULL) {
1423 return ldb_module_oom(ac->module);
1424 }
1425 msg->dn = prev_prim_group_dn;
1426
1427 ret = samdb_msg_add_addval(ldb, msg, msg, "member",
1428 ldb_dn_get_linearized(ac->msg->dn));
1429 if (ret != LDB_SUCCESS) {
1430 return ret;
1431 }
1432
1433 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1434 if (ret != LDB_SUCCESS) {
1435 return ret;
1436 }
1437 talloc_free(msg);
1438
1439 return LDB_SUCCESS;
1440 }
1441
1442 static int samldb_prim_group_trigger(struct samldb_ctx *ac)
1443 {
1444 int ret;
1445
1446 if (ac->req->operation == LDB_ADD) {
1447 ret = samldb_prim_group_set(ac);
1448 } else {
1449 ret = samldb_prim_group_change(ac);
1450 }
1451
1452 return ret;
1453 }
1454
1455 /**
1456 * Validate that the restriction in point 5 of MS-SAMR 3.1.1.8.10 userAccountControl is honoured
1457 *
1458 */
1459 static int samldb_check_user_account_control_acl(struct samldb_ctx *ac,
1460 struct dom_sid *sid,
1461 uint32_t user_account_control,
1462 uint32_t user_account_control_old)
1463 {
1464 int i, ret = 0;
1465 bool need_acl_check = false;
1466 struct ldb_result *res;
1467 const char * const sd_attrs[] = {"ntSecurityDescriptor", NULL};
1468 struct security_token *user_token;
1469 struct security_descriptor *domain_sd;
1470 struct ldb_dn *domain_dn = ldb_get_default_basedn(ldb_module_get_ctx(ac->module));
1471 const struct uac_to_guid {
1472 uint32_t uac;
1473 const char *oid;
1474 const char *guid;
1475 enum sec_privilege privilege;
1476 bool delete_is_privileged;
1477 const char *error_string;
1478 } map[] = {
1479 {
1480 .uac = UF_PASSWD_NOTREQD,
1481 .guid = GUID_DRS_UPDATE_PASSWORD_NOT_REQUIRED_BIT,
1482 .error_string = "Adding the UF_PASSWD_NOTREQD bit in userAccountControl requires the Update-Password-Not-Required-Bit right that was not given on the Domain object"
1483 },
1484 {
1485 .uac = UF_DONT_EXPIRE_PASSWD,
1486 .guid = GUID_DRS_UNEXPIRE_PASSWORD,
1487 .error_string = "Adding the UF_DONT_EXPIRE_PASSWD bit in userAccountControl requires the Unexpire-Password right that was not given on the Domain object"
1488 },
1489 {
1490 .uac = UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED,
1491 .guid = GUID_DRS_ENABLE_PER_USER_REVERSIBLY_ENCRYPTED_PASSWORD,
1492 .error_string = "Adding the UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED bit in userAccountControl requires the Enable-Per-User-Reversibly-Encrypted-Password right that was not given on the Domain object"
1493 },
1494 {
1495 .uac = UF_SERVER_TRUST_ACCOUNT,
1496 .guid = GUID_DRS_DS_INSTALL_REPLICA,
1497 .error_string = "Adding the UF_SERVER_TRUST_ACCOUNT bit in userAccountControl requires the DS-Install-Replica right that was not given on the Domain object"
1498 },
1499 {
1500 .uac = UF_PARTIAL_SECRETS_ACCOUNT,
1501 .guid = GUID_DRS_DS_INSTALL_REPLICA,
1502 .error_string = "Adding the UF_PARTIAL_SECRETS_ACCOUNT bit in userAccountControl requires the DS-Install-Replica right that was not given on the Domain object"
1503 },
1504 {
1505 .uac = UF_INTERDOMAIN_TRUST_ACCOUNT,
1506 .oid = DSDB_CONTROL_PERMIT_INTERDOMAIN_TRUST_UAC_OID,
1507 .error_string = "Updating the UF_INTERDOMAIN_TRUST_ACCOUNT bit in userAccountControl is not permitted over LDAP. This bit is restricted to the LSA CreateTrustedDomain interface",
1508 .delete_is_privileged = true
1509 },
1510 {
1511 .uac = UF_TRUSTED_FOR_DELEGATION,
1512 .privilege = SEC_PRIV_ENABLE_DELEGATION,
1513 .delete_is_privileged = true,
1514 .error_string = "Updating the UF_TRUSTED_FOR_DELEGATION bit in userAccountControl is not permitted without the SeEnableDelegationPrivilege"
1515 },
1516 {
1517 .uac = UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION,
1518 .privilege = SEC_PRIV_ENABLE_DELEGATION,
1519 .delete_is_privileged = true,
1520 .error_string = "Updating the UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION bit in userAccountControl is not permitted without the SeEnableDelegationPrivilege"
1521 }
1522
1523 };
1524
1525 if (dsdb_module_am_system(ac->module)) {
1526 return LDB_SUCCESS;
1527 }
1528
1529 for (i = 0; i < ARRAY_SIZE(map); i++) {
1530 if (user_account_control & map[i].uac) {
1531 need_acl_check = true;
1532 break;
1533 }
1534 }
1535 if (need_acl_check == false) {
1536 return LDB_SUCCESS;
1537 }
1538
1539 user_token = acl_user_token(ac->module);
1540 if (user_token == NULL) {
1541 return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1542 }
1543
1544 ret = dsdb_module_search_dn(ac->module, ac, &res,
1545 domain_dn,
1546 sd_attrs,
1547 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
1548 ac->req);
1549 if (ret != LDB_SUCCESS) {
1550 return ret;
1551 }
1552 if (res->count != 1) {
1553 return ldb_module_operr(ac->module);
1554 }
1555
1556 ret = dsdb_get_sd_from_ldb_message(ldb_module_get_ctx(ac->module),
1557 ac, res->msgs[0], &domain_sd);
1558
1559 if (ret != LDB_SUCCESS) {
1560 return ret;
1561 }
1562
1563 for (i = 0; i < ARRAY_SIZE(map); i++) {
1564 uint32_t this_uac_new = user_account_control & map[i].uac;
1565 uint32_t this_uac_old = user_account_control_old & map[i].uac;
1566 if (this_uac_new != this_uac_old) {
1567 if (this_uac_old != 0) {
1568 if (map[i].delete_is_privileged == false) {
1569 continue;
1570 }
1571 }
1572 if (map[i].oid) {
1573 struct ldb_control *control = ldb_request_get_control(ac->req, map[i].oid);
1574 if (control == NULL) {
1575 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1576 }
1577 } else if (map[i].privilege != SEC_PRIV_INVALID) {
1578 bool have_priv = security_token_has_privilege(user_token,
1579 map[i].privilege);
1580 if (have_priv == false) {
1581 ret = LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS;
1582 }
1583 } else {
1584 ret = acl_check_extended_right(ac, domain_sd,
1585 user_token,
1586 map[i].guid,
1587 SEC_ADS_CONTROL_ACCESS,
1588 sid);
1589 }
1590 if (ret != LDB_SUCCESS) {
1591 break;
1592 }
1593 }
1594 }
1595 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
1596 switch (ac->req->operation) {
1597 case LDB_ADD:
1598 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1599 "Failed to add %s: %s",
1600 ldb_dn_get_linearized(ac->msg->dn),
1601 map[i].error_string);
1602 break;
1603 case LDB_MODIFY:
1604 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
1605 "Failed to modify %s: %s",
1606 ldb_dn_get_linearized(ac->msg->dn),
1607 map[i].error_string);
1608 break;
1609 default:
1610 return ldb_module_operr(ac->module);
1611 }
1612 if (map[i].guid) {
1613 dsdb_acl_debug(domain_sd, acl_user_token(ac->module),
1614 domain_dn,
1615 true,
1616 10);
1617 }
1618 }
1619 return ret;
1620 }
1621
1622 /**
1623 * This function is called on LDB modify operations. It performs some additions/
1624 * replaces on the current LDB message when "userAccountControl" changes.
1625 */
1626 static int samldb_user_account_control_change(struct samldb_ctx *ac)
1627 {
1628 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1629 uint32_t old_uac;
1630 uint32_t new_uac;
1631 uint32_t raw_uac;
1632 uint32_t old_ufa;
1633 uint32_t new_ufa;
1634 uint32_t old_acb;
1635 uint32_t new_acb;
1636 uint32_t clear_acb;
1637 uint32_t old_atype;
1638 uint32_t new_atype;
1639 uint32_t old_pgrid;
1640 uint32_t new_pgrid;
1641 NTTIME old_lockoutTime;
1642 struct ldb_message_element *el;
1643 struct ldb_val *val;
1644 struct ldb_val computer_val;
1645 struct ldb_message *tmp_msg;
1646 struct dom_sid *sid;
1647 int ret;
1648 struct ldb_result *res;
1649 const char * const attrs[] = {
1650 "objectClass",
1651 "isCriticalSystemObject",
1652 "userAccountControl",
1653 "msDS-User-Account-Control-Computed",
1654 "lockoutTime",
1655 "objectSid",
1656 NULL
1657 };
1658 bool is_computer = false;
1659 bool old_is_critical = false;
1660 bool new_is_critical = false;
1661
1662 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1663 ac->req->operation);
1664 if (el == NULL || el->num_values == 0) {
1665 ldb_asprintf_errstring(ldb,
1666 "%08X: samldb: 'userAccountControl' can't be deleted!",
1667 W_ERROR_V(WERR_DS_ILLEGAL_MOD_OPERATION));
1668 return LDB_ERR_UNWILLING_TO_PERFORM;
1669 }
1670
1671 /* Create a temporary message for fetching the "userAccountControl" */
1672 tmp_msg = ldb_msg_new(ac->msg);
1673 if (tmp_msg == NULL) {
1674 return ldb_module_oom(ac->module);
1675 }
1676 ret = ldb_msg_add(tmp_msg, el, 0);
1677 if (ret != LDB_SUCCESS) {
1678 return ret;
1679 }
1680 raw_uac = ldb_msg_find_attr_as_uint(tmp_msg,
1681 "userAccountControl",
1682 0);
1683 new_acb = samdb_result_acct_flags(tmp_msg, NULL);
1684 talloc_free(tmp_msg);
1685 /*
1686 * UF_LOCKOUT and UF_PASSWORD_EXPIRED are only generated
1687 * and not stored. We ignore them almost completely.
1688 *
1689 * The only exception is the resulting ACB_AUTOLOCK in clear_acb.
1690 */
1691 new_uac = raw_uac & ~(UF_LOCKOUT|UF_PASSWORD_EXPIRED);
1692
1693 /* Fetch the old "userAccountControl" and "objectClass" */
1694 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1695 DSDB_FLAG_NEXT_MODULE, ac->req);
1696 if (ret != LDB_SUCCESS) {
1697 return ret;
1698 }
1699 old_uac = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1700 if (old_uac == 0) {
1701 return ldb_operr(ldb);
1702 }
1703 old_acb = samdb_result_acct_flags(res->msgs[0],
1704 "msDS-User-Account-Control-Computed");
1705 old_lockoutTime = ldb_msg_find_attr_as_int64(res->msgs[0],
1706 "lockoutTime", 0);
1707 old_is_critical = ldb_msg_find_attr_as_bool(res->msgs[0],
1708 "isCriticalSystemObject", 0);
1709 /* When we do not have objectclass "omputer" we cannot switch to a (read-only) DC */
1710 el = ldb_msg_find_element(res->msgs[0], "objectClass");
1711 if (el == NULL) {
1712 return ldb_operr(ldb);
1713 }
1714 computer_val = data_blob_string_const("computer");
1715 val = ldb_msg_find_val(el, &computer_val);
1716 if (val != NULL) {
1717 is_computer = true;
1718 }
1719
1720 old_ufa = old_uac & UF_ACCOUNT_TYPE_MASK;
1721 old_atype = ds_uf2atype(old_ufa);
1722 old_pgrid = ds_uf2prim_group_rid(old_uac);
1723
1724 new_ufa = new_uac & UF_ACCOUNT_TYPE_MASK;
1725 if (new_ufa == 0) {
1726 /*
1727 * When there is no account type embedded in "userAccountControl"
1728 * fall back to the old.
1729 */
1730 new_ufa = old_ufa;
1731 new_uac |= new_ufa;
1732 }
1733 new_atype = ds_uf2atype(new_ufa);
1734 new_pgrid = ds_uf2prim_group_rid(new_uac);
1735
1736 clear_acb = old_acb & ~new_acb;
1737
1738 switch (new_ufa) {
1739 case UF_NORMAL_ACCOUNT:
1740 new_is_critical = old_is_critical;
1741 break;
1742
1743 case UF_INTERDOMAIN_TRUST_ACCOUNT:
1744 new_is_critical = true;
1745 break;
1746
1747 case UF_WORKSTATION_TRUST_ACCOUNT:
1748 new_is_critical = false;
1749 if (new_uac & UF_PARTIAL_SECRETS_ACCOUNT) {
1750 if (!is_computer) {
1751 ldb_asprintf_errstring(ldb,
1752 "%08X: samldb: UF_PARTIAL_SECRETS_ACCOUNT "
1753 "requires objectclass 'computer'!",
1754 W_ERROR_V(WERR_DS_MACHINE_ACCOUNT_CREATED_PRENT4));
1755 return LDB_ERR_UNWILLING_TO_PERFORM;
1756 }
1757 new_is_critical = true;
1758 }
1759 break;
1760
1761 case UF_SERVER_TRUST_ACCOUNT:
1762 if (!is_computer) {
1763 ldb_asprintf_errstring(ldb,
1764 "%08X: samldb: UF_SERVER_TRUST_ACCOUNT "
1765 "requires objectclass 'computer'!",
1766 W_ERROR_V(WERR_DS_MACHINE_ACCOUNT_CREATED_PRENT4));
1767 return LDB_ERR_UNWILLING_TO_PERFORM;
1768 }
1769 new_is_critical = true;
1770 break;
1771
1772 default:
1773 ldb_asprintf_errstring(ldb,
1774 "%08X: samldb: invalid userAccountControl[0x%08X]",
1775 W_ERROR_V(WERR_INVALID_PARAMETER), raw_uac);
1776 return LDB_ERR_OTHER;
1777 }
1778
1779 if (old_atype != new_atype) {
1780 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1781 "sAMAccountType", new_atype);
1782 if (ret != LDB_SUCCESS) {
1783 return ret;
1784 }
1785 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1786 el->flags = LDB_FLAG_MOD_REPLACE;
1787 }
1788
1789 /* As per MS-SAMR 3.1.1.8.10 these flags have not to be set */
1790 if ((clear_acb & ACB_AUTOLOCK) && (old_lockoutTime != 0)) {
1791 /* "pwdLastSet" reset as password expiration has been forced */
1792 ldb_msg_remove_attr(ac->msg, "lockoutTime");
1793 ret = samdb_msg_add_uint64(ldb, ac->msg, ac->msg, "lockoutTime",
1794 (NTTIME)0);
1795 if (ret != LDB_SUCCESS) {
1796 return ret;
1797 }
1798 el = ldb_msg_find_element(ac->msg, "lockoutTime");
1799 el->flags = LDB_FLAG_MOD_REPLACE;
1800 }
1801
1802 /* "isCriticalSystemObject" might be set/changed */
1803 if (old_is_critical != new_is_critical) {
1804 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1805 new_is_critical ? "TRUE": "FALSE");
1806 if (ret != LDB_SUCCESS) {
1807 return ret;
1808 }
1809 el = ldb_msg_find_element(ac->msg,
1810 "isCriticalSystemObject");
1811 el->flags = LDB_FLAG_MOD_REPLACE;
1812 }
1813
1814 if (!ldb_msg_find_element(ac->msg, "primaryGroupID") &&
1815 (old_pgrid != new_pgrid)) {
1816 /* Older AD deployments don't know about the RODC group */
1817 if (new_pgrid == DOMAIN_RID_READONLY_DCS) {
1818 ret = samldb_prim_group_tester(ac, new_pgrid);
1819 if (ret != LDB_SUCCESS) {
1820 return ret;
1821 }
1822 }
1823
1824 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1825 "primaryGroupID", new_pgrid);
1826 if (ret != LDB_SUCCESS) {
1827 return ret;
1828 }
1829 el = ldb_msg_find_element(ac->msg,
1830 "primaryGroupID");
1831 el->flags = LDB_FLAG_MOD_REPLACE;
1832 }
1833
1834 /* Propagate eventual "userAccountControl" attribute changes */
1835 if (old_uac != new_uac) {
1836 char *tempstr = talloc_asprintf(ac->msg, "%d",
1837 new_uac);
1838 if (tempstr == NULL) {
1839 return ldb_module_oom(ac->module);
1840 }
1841
1842 /* Overwrite "userAccountControl" correctly */
1843 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1844 ac->req->operation);
1845 el->values[0].data = (uint8_t *) tempstr;
1846 el->values[0].length = strlen(tempstr);
1847 } else {
1848 ldb_msg_remove_attr(ac->msg, "userAccountControl");
1849 }
1850
1851 sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
1852 if (sid == NULL) {
1853 return ldb_module_operr(ac->module);
1854 }
1855
1856 ret = samldb_check_user_account_control_acl(ac, sid, new_uac, old_uac);
1857 if (ret != LDB_SUCCESS) {
1858 return ret;
1859 }
1860
1861 return LDB_SUCCESS;
1862 }
1863
1864 static int samldb_lockout_time(struct samldb_ctx *ac)
1865 {
1866 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1867 NTTIME lockoutTime;
1868 struct ldb_message_element *el;
1869 struct ldb_message *tmp_msg;
1870 int ret;
1871
1872 el = dsdb_get_single_valued_attr(ac->msg, "lockoutTime",
1873 ac->req->operation);
1874 if (el == NULL || el->num_values == 0) {
1875 ldb_asprintf_errstring(ldb,
1876 "%08X: samldb: 'lockoutTime' can't be deleted!",
1877 W_ERROR_V(WERR_DS_ILLEGAL_MOD_OPERATION));
1878 return LDB_ERR_UNWILLING_TO_PERFORM;
1879 }
1880
1881 /* Create a temporary message for fetching the "lockoutTime" */
1882 tmp_msg = ldb_msg_new(ac->msg);
1883 if (tmp_msg == NULL) {
1884 return ldb_module_oom(ac->module);
1885 }
1886 ret = ldb_msg_add(tmp_msg, el, 0);
1887 if (ret != LDB_SUCCESS) {
1888 return ret;
1889 }
1890 lockoutTime = ldb_msg_find_attr_as_int64(tmp_msg,
1891 "lockoutTime",
1892 0);
1893 talloc_free(tmp_msg);
1894
1895 if (lockoutTime != 0) {
1896 return LDB_SUCCESS;
1897 }
1898
1899 /* lockoutTime == 0 resets badPwdCount */
1900 ldb_msg_remove_attr(ac->msg, "badPwdCount");
1901 ret = samdb_msg_add_int(ldb, ac->msg, ac->msg,
1902 "badPwdCount", 0);
1903 if (ret != LDB_SUCCESS) {
1904 return ret;
1905 }
1906 el = ldb_msg_find_element(ac->msg, "badPwdCount");
1907 el->flags = LDB_FLAG_MOD_REPLACE;
1908
1909 return LDB_SUCCESS;
1910 }
1911
1912 static int samldb_group_type_change(struct samldb_ctx *ac)
1913 {
1914 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1915 uint32_t group_type, old_group_type, account_type;
1916 struct ldb_message_element *el;
1917 struct ldb_message *tmp_msg;
1918 int ret;
1919 struct ldb_result *res;
1920 const char * const attrs[] = { "groupType", NULL };
1921
1922 el = dsdb_get_single_valued_attr(ac->msg, "groupType",
1923 ac->req->operation);
1924 if (el == NULL) {
1925 /* we are not affected */
1926 return LDB_SUCCESS;
1927 }
1928
1929 /* Create a temporary message for fetching the "groupType" */
1930 tmp_msg = ldb_msg_new(ac->msg);
1931 if (tmp_msg == NULL) {
1932 return ldb_module_oom(ac->module);
1933 }
1934 ret = ldb_msg_add(tmp_msg, el, 0);
1935 if (ret != LDB_SUCCESS) {
1936 return ret;
1937 }
1938 group_type = ldb_msg_find_attr_as_uint(tmp_msg, "groupType", 0);
1939 talloc_free(tmp_msg);
1940
1941 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1942 DSDB_FLAG_NEXT_MODULE |
1943 DSDB_SEARCH_SHOW_DELETED, ac->req);
1944 if (ret != LDB_SUCCESS) {
1945 return ret;
1946 }
1947 old_group_type = ldb_msg_find_attr_as_uint(res->msgs[0], "groupType", 0);
1948 if (old_group_type == 0) {
1949 return ldb_operr(ldb);
1950 }
1951
1952 /* Group type switching isn't so easy as it seems: We can only
1953 * change in this directions: global <-> universal <-> local
1954 * On each step also the group type itself
1955 * (security/distribution) is variable. */
1956
1957 if (ldb_request_get_control(ac->req, LDB_CONTROL_PROVISION_OID) == NULL) {
1958 switch (group_type) {
1959 case GTYPE_SECURITY_GLOBAL_GROUP:
1960 case GTYPE_DISTRIBUTION_GLOBAL_GROUP:
1961 /* change to "universal" allowed */
1962 if ((old_group_type == GTYPE_SECURITY_DOMAIN_LOCAL_GROUP) ||
1963 (old_group_type == GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP)) {
1964 ldb_set_errstring(ldb,
1965 "samldb: Change from security/distribution local group forbidden!");
1966 return LDB_ERR_UNWILLING_TO_PERFORM;
1967 }
1968 break;
1969
1970 case GTYPE_SECURITY_UNIVERSAL_GROUP:
1971 case GTYPE_DISTRIBUTION_UNIVERSAL_GROUP:
1972 /* each change allowed */
1973 break;
1974 case GTYPE_SECURITY_DOMAIN_LOCAL_GROUP:
1975 case GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP:
1976 /* change to "universal" allowed */
1977 if ((old_group_type == GTYPE_SECURITY_GLOBAL_GROUP) ||
1978 (old_group_type == GTYPE_DISTRIBUTION_GLOBAL_GROUP)) {
1979 ldb_set_errstring(ldb,
1980 "samldb: Change from security/distribution global group forbidden!");
1981 return LDB_ERR_UNWILLING_TO_PERFORM;
1982 }
1983 break;
1984
1985 case GTYPE_SECURITY_BUILTIN_LOCAL_GROUP:
1986 default:
1987 /* we don't allow this "groupType" values */
1988 return LDB_ERR_UNWILLING_TO_PERFORM;
1989 break;
1990 }
1991 }
1992
1993 account_type = ds_gtype2atype(group_type);
1994 if (account_type == 0) {
1995 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1996 return LDB_ERR_UNWILLING_TO_PERFORM;
1997 }
1998 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1999 account_type);
2000 if (ret != LDB_SUCCESS) {
2001 return ret;
2002 }
2003 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
2004 el->flags = LDB_FLAG_MOD_REPLACE;
2005
2006 return LDB_SUCCESS;
2007 }
2008
2009 static int samldb_sam_accountname_check(struct samldb_ctx *ac)
2010 {
2011 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2012 const char * const no_attrs[] = { NULL };
2013 struct ldb_result *res;
2014 const char *sam_accountname, *enc_str;
2015 struct ldb_message_element *el;
2016 struct ldb_message *tmp_msg;
2017 int ret;
2018
2019 el = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
2020 ac->req->operation);
2021 if (el == NULL) {
2022 /* we are not affected */
2023 return LDB_SUCCESS;
2024 }
2025
2026 /* Create a temporary message for fetching the "sAMAccountName" */
2027 tmp_msg = ldb_msg_new(ac->msg);
2028 if (tmp_msg == NULL) {
2029 return ldb_module_oom(ac->module);
2030 }
2031 ret = ldb_msg_add(tmp_msg, el, 0);
2032 if (ret != LDB_SUCCESS) {
2033 return ret;
2034 }
2035
2036 /* We must not steal the original string, it belongs to the caller! */
2037 sam_accountname = talloc_strdup(ac,
2038 ldb_msg_find_attr_as_string(tmp_msg, "sAMAccountName", NULL));
2039 talloc_free(tmp_msg);
2040
2041 if (sam_accountname == NULL) {
2042 /* The "sAMAccountName" cannot be nothing */
2043 ldb_set_errstring(ldb,
2044 "samldb: Empty account names aren't allowed!");
2045 return LDB_ERR_UNWILLING_TO_PERFORM;
2046 }
2047
2048 enc_str = ldb_binary_encode_string(ac, sam_accountname);
2049 if (enc_str == NULL) {
2050 return ldb_module_oom(ac->module);
2051 }
2052
2053 /* Make sure that a "sAMAccountName" is only used once */
2054
2055 ret = dsdb_module_search(ac->module, ac, &res,
2056 ldb_get_default_basedn(ldb),
2057 LDB_SCOPE_SUBTREE, no_attrs,
2058 DSDB_FLAG_NEXT_MODULE, ac->req,
2059 "(sAMAccountName=%s)", enc_str);
2060 if (ret != LDB_SUCCESS) {
2061 return ret;
2062 }
2063 if (res->count > 1) {
2064 return ldb_operr(ldb);
2065 } else if (res->count == 1) {
2066 if (ldb_dn_compare(res->msgs[0]->dn, ac->msg->dn) != 0) {
2067 ldb_asprintf_errstring(ldb,
2068 "samldb: Account name (sAMAccountName) '%s' already in use!",
2069 sam_accountname);
2070 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2071 }
2072 }
2073 talloc_free(res);
2074
2075 return LDB_SUCCESS;
2076 }
2077
2078 static int samldb_member_check(struct samldb_ctx *ac)
2079 {
2080 const char * const attrs[] = { "objectSid", NULL };
2081 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2082 struct ldb_message_element *el;
2083 struct ldb_dn *member_dn;
2084 struct dom_sid *sid;
2085 struct ldb_result *res;
2086 struct dom_sid *group_sid;
2087 unsigned int i, j;
2088 int ret;
2089
2090 /* Fetch information from the existing object */
2091
2092 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2093 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req, NULL);
2094 if (ret != LDB_SUCCESS) {
2095 return ret;
2096 }
2097 if (res->count != 1) {
2098 return ldb_operr(ldb);
2099 }
2100
2101 group_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
2102 if (group_sid == NULL) {
2103 return ldb_operr(ldb);
2104 }
2105
2106 /* We've to walk over all modification entries and consider the "member"
2107 * ones. */
2108 for (i = 0; i < ac->msg->num_elements; i++) {
2109 if (ldb_attr_cmp(ac->msg->elements[i].name, "member") != 0) {
2110 continue;
2111 }
2112
2113 el = &ac->msg->elements[i];
2114 for (j = 0; j < el->num_values; j++) {
2115 struct ldb_result *group_res;
2116 const char *group_attrs[] = { "primaryGroupID" , NULL };
2117 uint32_t prim_group_rid;
2118
2119 if (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE) {
2120 /* Deletes will be handled in
2121 * repl_meta_data, and deletes not
2122 * matching a member will return
2123 * LDB_ERR_UNWILLING_TO_PERFORM
2124 * there */
2125 continue;
2126 }
2127
2128 member_dn = ldb_dn_from_ldb_val(ac, ldb,
2129 &el->values[j]);
2130 if (!ldb_dn_validate(member_dn)) {
2131 return ldb_operr(ldb);
2132 }
2133
2134 /* Denies to add "member"s to groups which are primary
2135 * ones for them - in this case return
2136 * ERR_ENTRY_ALREADY_EXISTS. */
2137
2138 ret = dsdb_module_search_dn(ac->module, ac, &group_res,
2139 member_dn, group_attrs,
2140 DSDB_FLAG_NEXT_MODULE, ac->req);
2141 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
2142 /* member DN doesn't exist yet */
2143 continue;
2144 }
2145 if (ret != LDB_SUCCESS) {
2146 return ret;
2147 }
2148 prim_group_rid = ldb_msg_find_attr_as_uint(group_res->msgs[0], "primaryGroupID", (uint32_t)-1);
2149 if (prim_group_rid == (uint32_t) -1) {
2150 /* the member hasn't to be a user account ->
2151 * therefore no check needed in this case. */
2152 continue;
2153 }
2154
2155 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
2156 prim_group_rid);
2157 if (sid == NULL) {
2158 return ldb_operr(ldb);
2159 }
2160
2161 if (dom_sid_equal(group_sid, sid)) {
2162 ldb_asprintf_errstring(ldb,
2163 "samldb: member %s already set via primaryGroupID %u",
2164 ldb_dn_get_linearized(member_dn), prim_group_rid);
2165 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2166 }
2167 }
2168 }
2169
2170 talloc_free(res);
2171
2172 return LDB_SUCCESS;
2173 }
2174
2175 /* SAM objects have special rules regarding the "description" attribute on
2176 * modify operations. */
2177 static int samldb_description_check(struct samldb_ctx *ac, bool *modified)
2178 {
2179 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2180 const char * const attrs[] = { "objectClass", "description", NULL };
2181 struct ldb_result *res;
2182 unsigned int i;
2183 int ret;
2184
2185 /* Fetch information from the existing object */
2186 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2187 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req,
2188 "(|(objectclass=user)(objectclass=group)(objectclass=samDomain)(objectclass=samServer))");
2189 if (ret != LDB_SUCCESS) {
2190 /* don't treat it specially ... let normal error codes
2191 happen from other places */
2192 ldb_reset_err_string(ldb);
2193 return LDB_SUCCESS;
2194 }
2195 if (res->count == 0) {
2196 /* we didn't match the filter */
2197 talloc_free(res);
2198 return LDB_SUCCESS;
2199 }
2200
2201 /* We've to walk over all modification entries and consider the
2202 * "description" ones. */
2203 for (i = 0; i < ac->msg->num_elements; i++) {
2204 if (ldb_attr_cmp(ac->msg->elements[i].name, "description") == 0) {
2205 ac->msg->elements[i].flags |= LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK;
2206 *modified = true;
2207 }
2208 }
2209
2210 talloc_free(res);
2211
2212 return LDB_SUCCESS;
2213 }
2214
2215 /* This trigger adapts the "servicePrincipalName" attributes if the
2216 * "dNSHostName" and/or "sAMAccountName" attribute change(s) */
2217 static int samldb_service_principal_names_change(struct samldb_ctx *ac)
2218 {
2219 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2220 struct ldb_message_element *el = NULL, *el2 = NULL;
2221 struct ldb_message *msg;
2222 const char * const attrs[] = { "servicePrincipalName", NULL };
2223 struct ldb_result *res;
2224 const char *dns_hostname = NULL, *old_dns_hostname = NULL,
2225 *sam_accountname = NULL, *old_sam_accountname = NULL;
2226 unsigned int i, j;
2227 int ret;
2228
2229 el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName",
2230 ac->req->operation);
2231 el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
2232 ac->req->operation);
2233 if ((el == NULL) && (el2 == NULL)) {
2234 /* we are not affected */
2235 return LDB_SUCCESS;
2236 }
2237
2238 /* Create a temporary message for fetching the "dNSHostName" */
2239 if (el != NULL) {
2240 const char *dns_attrs[] = { "dNSHostName", NULL };
2241 msg = ldb_msg_new(ac->msg);
2242 if (msg == NULL) {
2243 return ldb_module_oom(ac->module);
2244 }
2245 ret = ldb_msg_add(msg, el, 0);
2246 if (ret != LDB_SUCCESS) {
2247 return ret;
2248 }
2249 dns_hostname = talloc_strdup(ac,
2250 ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL));
2251 if (dns_hostname == NULL) {
2252 return ldb_module_oom(ac->module);
2253 }
2254
2255 talloc_free(msg);
2256
2257 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn,
2258 dns_attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
2259 if (ret == LDB_SUCCESS) {
2260 old_dns_hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
2261 }
2262 }
2263
2264 /* Create a temporary message for fetching the "sAMAccountName" */
2265 if (el2 != NULL) {
2266 char *tempstr, *tempstr2 = NULL;
2267 const char *acct_attrs[] = { "sAMAccountName", NULL };
2268
2269 msg = ldb_msg_new(ac->msg);
2270 if (msg == NULL) {
2271 return ldb_module_oom(ac->module);
2272 }
2273 ret = ldb_msg_add(msg, el2, 0);
2274 if (ret != LDB_SUCCESS) {
2275 return ret;
2276 }
2277 tempstr = talloc_strdup(ac,
2278 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
2279 talloc_free(msg);
2280
2281 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, acct_attrs,
2282 DSDB_FLAG_NEXT_MODULE, ac->req);
2283 if (ret == LDB_SUCCESS) {
2284 tempstr2 = talloc_strdup(ac,
2285 ldb_msg_find_attr_as_string(res->msgs[0],
2286 "sAMAccountName", NULL));
2287 }
2288
2289
2290 /* The "sAMAccountName" needs some additional trimming: we need
2291 * to remove the trailing "$"s if they exist. */
2292 if ((tempstr != NULL) && (tempstr[0] != '\0') &&
2293 (tempstr[strlen(tempstr) - 1] == '$')) {
2294 tempstr[strlen(tempstr) - 1] = '\0';
2295 }
2296 if ((tempstr2 != NULL) && (tempstr2[0] != '\0') &&
2297 (tempstr2[strlen(tempstr2) - 1] == '$')) {
2298 tempstr2[strlen(tempstr2) - 1] = '\0';
2299 }
2300 sam_accountname = tempstr;
2301 old_sam_accountname = tempstr2;
2302 }
2303
2304 if (old_dns_hostname == NULL) {
2305 /* we cannot change when the old name is unknown */
2306 dns_hostname = NULL;
2307 }
2308 if ((old_dns_hostname != NULL) && (dns_hostname != NULL) &&
2309 (strcasecmp_m(old_dns_hostname, dns_hostname) == 0)) {
2310 /* The "dNSHostName" didn't change */
2311 dns_hostname = NULL;
2312 }
2313
2314 if (old_sam_accountname == NULL) {
2315 /* we cannot change when the old name is unknown */
2316 sam_accountname = NULL;
2317 }
2318 if ((old_sam_accountname != NULL) && (sam_accountname != NULL) &&
2319 (strcasecmp_m(old_sam_accountname, sam_accountname) == 0)) {
2320 /* The "sAMAccountName" didn't change */
2321 sam_accountname = NULL;
2322 }
2323
2324 if ((dns_hostname == NULL) && (sam_accountname == NULL)) {
2325 /* Well, there are information missing (old name(s)) or the
2326 * names didn't change. We've nothing to do and can exit here */
2327 return LDB_SUCCESS;
2328 }
2329
2330 /* Potential "servicePrincipalName" changes in the same request have to
2331 * be handled before the update (Windows behaviour). */
2332 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
2333 if (el != NULL) {
2334 msg = ldb_msg_new(ac->msg);
2335 if (msg == NULL) {
2336 return ldb_module_oom(ac->module);
2337 }
2338 msg->dn = ac->msg->dn;
2339
2340 do {
2341 ret = ldb_msg_add(msg, el, el->flags);
2342 if (ret != LDB_SUCCESS) {
2343 return ret;
2344 }
2345
2346 ldb_msg_remove_element(ac->msg, el);
2347
2348 el = ldb_msg_find_element(ac->msg,
2349 "servicePrincipalName");
2350 } while (el != NULL);
2351
2352 ret = dsdb_module_modify(ac->module, msg,
2353 DSDB_FLAG_NEXT_MODULE, ac->req);
2354 if (ret != LDB_SUCCESS) {
2355 return ret;
2356 }
2357 talloc_free(msg);
2358 }
2359
2360 /* Fetch the "servicePrincipalName"s if any */
2361 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2362 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
2363 if (ret != LDB_SUCCESS) {
2364 return ret;
2365 }
2366 if ((res->count != 1) || (res->msgs[0]->num_elements > 1)) {
2367 return ldb_operr(ldb);
2368 }
2369
2370 if (res->msgs[0]->num_elements == 1) {
2371 /*
2372 * Yes, we do have "servicePrincipalName"s. First we update them
2373 * locally, that means we do always substitute the current
2374 * "dNSHostName" with the new one and/or "sAMAccountName"
2375 * without "$" with the new one and then we append the
2376 * modified "servicePrincipalName"s as a message element
2377 * replace to the modification request (Windows behaviour). We
2378 * need also to make sure that the values remain case-
2379 * insensitively unique.
2380 */
2381
2382 ret = ldb_msg_add_empty(ac->msg, "servicePrincipalName",
2383 LDB_FLAG_MOD_REPLACE, &el);
2384 if (ret != LDB_SUCCESS) {
2385 return ret;
2386 }
2387
2388 for (i = 0; i < res->msgs[0]->elements[0].num_values; i++) {
2389 char *old_str, *new_str, *pos;
2390 const char *tok;
2391 struct ldb_val *vals;
2392 bool found = false;
2393
2394 old_str = (char *)
2395 res->msgs[0]->elements[0].values[i].data;
2396
2397 new_str = talloc_strdup(ac->msg,
2398 strtok_r(old_str, "/", &pos));
2399 if (new_str == NULL) {
2400 return ldb_module_oom(ac->module);
2401 }
2402
2403 while ((tok = strtok_r(NULL, "/", &pos)) != NULL) {
2404 if ((dns_hostname != NULL) &&
2405 (strcasecmp_m(tok, old_dns_hostname) == 0)) {
2406 tok = dns_hostname;
2407 }
2408 if ((sam_accountname != NULL) &&
2409 (strcasecmp_m(tok, old_sam_accountname) == 0)) {
2410 tok = sam_accountname;
2411 }
2412
2413 new_str = talloc_asprintf(ac->msg, "%s/%s",
2414 new_str, tok);
2415 if (new_str == NULL) {
2416 return ldb_module_oom(ac->module);
2417 }
2418 }
2419
2420 /* Uniqueness check */
2421 for (j = 0; (!found) && (j < el->num_values); j++) {
2422 if (strcasecmp_m((char *)el->values[j].data,
2423 new_str) == 0) {
2424 found = true;
2425 }
2426 }
2427 if (found) {
2428 continue;
2429 }
2430
2431 /*
2432 * append the new "servicePrincipalName" -
2433 * code derived from ldb_msg_add_value().
2434 *
2435 * Open coded to make it clear that we must
2436 * append to the MOD_REPLACE el created above.
2437 */
2438 vals = talloc_realloc(ac->msg, el->values,
2439 struct ldb_val,
2440 el->num_values + 1);
2441 if (vals == NULL) {
2442 return ldb_module_oom(ac->module);
2443 }
2444 el->values = vals;
2445 el->values[el->num_values] = data_blob_string_const(new_str);
2446 ++(el->num_values);
2447 }
2448 }
2449
2450 talloc_free(res);
2451
2452 return LDB_SUCCESS;
2453 }
2454
2455 /* This checks the "fSMORoleOwner" attributes */
2456 static int samldb_fsmo_role_owner_check(struct samldb_ctx *ac)
2457 {
2458 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2459 const char * const no_attrs[] = { NULL };
2460 struct ldb_message_element *el;
2461 struct ldb_message *tmp_msg;
2462 struct ldb_dn *res_dn;
2463 struct ldb_result *res;
2464 int ret;
2465
2466 el = dsdb_get_single_valued_attr(ac->msg, "fSMORoleOwner",
2467 ac->req->operation);
2468 if (el == NULL) {
2469 /* we are not affected */
2470 return LDB_SUCCESS;
2471 }
2472
2473 /* Create a temporary message for fetching the "fSMORoleOwner" */
2474 tmp_msg = ldb_msg_new(ac->msg);
2475 if (tmp_msg == NULL) {
2476 return ldb_module_oom(ac->module);
2477 }
2478 ret = ldb_msg_add(tmp_msg, el, 0);
2479 if (ret != LDB_SUCCESS) {
2480 return ret;
2481 }
2482 res_dn = ldb_msg_find_attr_as_dn(ldb, ac, tmp_msg, "fSMORoleOwner");
2483 talloc_free(tmp_msg);
2484
2485 if (res_dn == NULL) {
2486 ldb_set_errstring(ldb,
2487 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2488 if (ac->req->operation == LDB_ADD) {
2489 return LDB_ERR_CONSTRAINT_VIOLATION;
2490 } else {
2491 return LDB_ERR_UNWILLING_TO_PERFORM;
2492 }
2493 }
2494
2495 /* Fetched DN has to reference a "nTDSDSA" entry */
2496 ret = dsdb_module_search(ac->module, ac, &res, res_dn, LDB_SCOPE_BASE,
2497 no_attrs,
2498 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2499 ac->req, "(objectClass=nTDSDSA)");
2500 if (ret != LDB_SUCCESS) {
2501 return ret;
2502 }
2503 if (res->count != 1) {
2504 ldb_set_errstring(ldb,
2505 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2506 return LDB_ERR_UNWILLING_TO_PERFORM;
2507 }
2508
2509 talloc_free(res);
2510
2511 return LDB_SUCCESS;
2512 }
2513
2514
2515 /* add */
2516 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
2517 {
2518 struct ldb_context *ldb;
2519 struct samldb_ctx *ac;
2520 struct ldb_message_element *el;
2521 int ret;
2522
2523 ldb = ldb_module_get_ctx(module);
2524 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
2525
2526 /* do not manipulate our control entries */
2527 if (ldb_dn_is_special(req->op.add.message->dn)) {
2528 return ldb_next_request(module, req);
2529 }
2530
2531 el = ldb_msg_find_element(req->op.add.message, "userParameters");
2532 if (el != NULL && ldb_req_is_untrusted(req)) {
2533 const char *reason = "samldb_add: "
2534 "setting userParameters is not supported over LDAP, "
2535 "see https://bugzilla.samba.org/show_bug.cgi?id=8077";
2536 ldb_debug(ldb, LDB_DEBUG_WARNING, "%s", reason);
2537 return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, reason);
2538 }
2539
2540 ac = samldb_ctx_init(module, req);
2541 if (ac == NULL) {
2542 return ldb_operr(ldb);
2543 }
2544
2545 /* build the new msg */
2546 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
2547 if (ac->msg == NULL) {
2548 talloc_free(ac);
2549 ldb_debug(ldb, LDB_DEBUG_FATAL,
2550 "samldb_add: ldb_msg_copy_shallow failed!\n");
2551 return ldb_operr(ldb);
2552 }
2553
2554 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2555 if (el != NULL) {
2556 ret = samldb_fsmo_role_owner_check(ac);
2557 if (ret != LDB_SUCCESS) {
2558 return ret;
2559 }
2560 }
2561
2562 if (samdb_find_attribute(ldb, ac->msg,
2563 "objectclass", "user") != NULL) {
2564 ac->type = SAMLDB_TYPE_USER;
2565
2566 ret = samldb_prim_group_trigger(ac);
2567 if (ret != LDB_SUCCESS) {
2568 return ret;
2569 }
2570
2571 ret = samldb_objectclass_trigger(ac);
2572 if (ret != LDB_SUCCESS) {
2573 return ret;
2574 }
2575
2576 return samldb_fill_object(ac);
2577 }
2578
2579 if (samdb_find_attribute(ldb, ac->msg,
2580 "objectclass", "group") != NULL) {
2581 ac->type = SAMLDB_TYPE_GROUP;
2582
2583 ret = samldb_objectclass_trigger(ac);
2584 if (ret != LDB_SUCCESS) {
2585 return ret;
2586 }
2587
2588 return samldb_fill_object(ac);
2589 }
2590
2591 /* perhaps a foreignSecurityPrincipal? */
2592 if (samdb_find_attribute(ldb, ac->msg,
2593 "objectclass",
2594 "foreignSecurityPrincipal") != NULL) {
2595 return samldb_fill_foreignSecurityPrincipal_object(ac);
2596 }
2597
2598 if (samdb_find_attribute(ldb, ac->msg,
2599 "objectclass", "classSchema") != NULL) {
2600 ret = samldb_schema_info_update(ac);
2601 if (ret != LDB_SUCCESS) {
2602 talloc_free(ac);
2603 return ret;
2604 }
2605
2606 ac->type = SAMLDB_TYPE_CLASS;
2607 return samldb_fill_object(ac);
2608 }
2609
2610 if (samdb_find_attribute(ldb, ac->msg,
2611 "objectclass", "attributeSchema") != NULL) {
2612 ret = samldb_schema_info_update(ac);
2613 if (ret != LDB_SUCCESS) {
2614 talloc_free(ac);
2615 return ret;
2616 }
2617
2618 ac->type = SAMLDB_TYPE_ATTRIBUTE;
2619 return samldb_fill_object(ac);
2620 }
2621
2622 talloc_free(ac);
2623
2624 /* nothing matched, go on */
2625 return ldb_next_request(module, req);
2626 }
2627
2628 /* modify */
2629 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
2630 {
2631 struct ldb_context *ldb;
2632 struct samldb_ctx *ac;
2633 struct ldb_message_element *el, *el2;
2634 bool modified = false;
2635 int ret;
2636
2637 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2638 /* do not manipulate our control entries */
2639 return ldb_next_request(module, req);
2640 }
2641
2642 ldb = ldb_module_get_ctx(module);
2643
2644 /* make sure that "objectSid" is not specified */
2645 el = ldb_msg_find_element(req->op.mod.message, "objectSid");
2646 if (el != NULL) {
2647 if (ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID) == NULL) {
2648 ldb_set_errstring(ldb,
2649 "samldb: objectSid must not be specified!");
2650 return LDB_ERR_UNWILLING_TO_PERFORM;
2651 }
2652 }
2653 /* make sure that "sAMAccountType" is not specified */
2654 el = ldb_msg_find_element(req->op.mod.message, "sAMAccountType");
2655 if (el != NULL) {
2656 ldb_set_errstring(ldb,
2657 "samldb: sAMAccountType must not be specified!");
2658 return LDB_ERR_UNWILLING_TO_PERFORM;
2659 }
2660 /* make sure that "isCriticalSystemObject" is not specified */
2661 el = ldb_msg_find_element(req->op.mod.message, "isCriticalSystemObject");
2662 if (el != NULL) {
2663 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) == NULL) {
2664 ldb_set_errstring(ldb,
2665 "samldb: isCriticalSystemObject must not be specified!");
2666 return LDB_ERR_UNWILLING_TO_PERFORM;
2667 }
2668 }
2669
2670 /* msDS-IntId is not allowed to be modified
2671 * except when modification comes from replication */
2672 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
2673 if (!ldb_request_get_control(req,
2674 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
2675 return LDB_ERR_CONSTRAINT_VIOLATION;
2676 }
2677 }
2678
2679 el = ldb_msg_find_element(req->op.mod.message, "userParameters");
2680 if (el != NULL && ldb_req_is_untrusted(req)) {
2681 const char *reason = "samldb: "
2682 "setting userParameters is not supported over LDAP, "
2683 "see https://bugzilla.samba.org/show_bug.cgi?id=8077";
2684 ldb_debug(ldb, LDB_DEBUG_WARNING, "%s", reason);
2685 return ldb_error(ldb, LDB_ERR_CONSTRAINT_VIOLATION, reason);
2686 }
2687
2688 ac = samldb_ctx_init(module, req);
2689 if (ac == NULL) {
2690 return ldb_operr(ldb);
2691 }
2692
2693 /* build the new msg */
2694 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2695 if (ac->msg == NULL) {
2696 talloc_free(ac);
2697 ldb_debug(ldb, LDB_DEBUG_FATAL,
2698 "samldb_modify: ldb_msg_copy_shallow failed!\n");
2699 return ldb_operr(ldb);
2700 }
2701
2702 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
2703 if (el != NULL) {
2704 ret = samldb_prim_group_trigger(ac);
2705 if (ret != LDB_SUCCESS) {
2706 return ret;
2707 }
2708 }
2709
2710 el = ldb_msg_find_element(ac->msg, "userAccountControl");
2711 if (el != NULL) {
2712 modified = true;
2713 ret = samldb_user_account_control_change(ac);
2714 if (ret != LDB_SUCCESS) {
2715 return ret;
2716 }
2717 }
2718
2719 el = ldb_msg_find_element(ac->msg, "lockoutTime");
2720 if (el != NULL) {
2721 modified = true;
2722 ret = samldb_lockout_time(ac);
2723 if (ret != LDB_SUCCESS) {
2724 return ret;
2725 }
2726 }
2727
2728 el = ldb_msg_find_element(ac->msg, "groupType");
2729 if (el != NULL) {
2730 modified = true;
2731 ret = samldb_group_type_change(ac);
2732 if (ret != LDB_SUCCESS) {
2733 return ret;
2734 }
2735 }
2736
2737 el = ldb_msg_find_element(ac->msg, "sAMAccountName");
2738 if (el != NULL) {
2739 ret = samldb_sam_accountname_check(ac);
2740 if (ret != LDB_SUCCESS) {
2741 return ret;
2742 }
2743 }
2744
2745 el = ldb_msg_find_element(ac->msg, "member");
2746 if (el != NULL) {
2747 ret = samldb_member_check(ac);
2748 if (ret != LDB_SUCCESS) {
2749 return ret;
2750 }
2751 }
2752
2753 el = ldb_msg_find_element(ac->msg, "description");
2754 if (el != NULL) {
2755 ret = samldb_description_check(ac, &modified);
2756 if (ret != LDB_SUCCESS) {
2757 return ret;
2758 }
2759 }
2760
2761 el = ldb_msg_find_element(ac->msg, "dNSHostName");
2762 el2 = ldb_msg_find_element(ac->msg, "sAMAccountName");
2763 if ((el != NULL) || (el2 != NULL)) {
2764 modified = true;
2765 ret = samldb_service_principal_names_change(ac);
2766 if (ret != LDB_SUCCESS) {
2767 return ret;
2768 }
2769 }
2770
2771 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2772 if (el != NULL) {
2773 ret = samldb_fsmo_role_owner_check(ac);
2774 if (ret != LDB_SUCCESS) {
2775 return ret;
2776 }
2777 }
2778
2779 if (modified) {
2780 struct ldb_request *child_req;
2781
2782 /* Now perform the real modifications as a child request */
2783 ret = ldb_build_mod_req(&child_req, ldb, ac,
2784 ac->msg,
2785 req->controls,
2786 req, dsdb_next_callback,
2787 req);
2788 LDB_REQ_SET_LOCATION(child_req);
2789 if (ret != LDB_SUCCESS) {
2790 return ret;
2791 }
2792
2793 return ldb_next_request(module, child_req);
2794 }
2795
2796 talloc_free(ac);
2797
2798 /* no change which interests us, go on */
2799 return ldb_next_request(module, req);
2800 }
2801
2802 /* delete */
2803
2804 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
2805 {
2806 struct ldb_context *ldb;
2807 struct dom_sid *sid;
2808 uint32_t rid;
2809 NTSTATUS status;
2810 int ret;
2811 struct ldb_result *res;
2812 const char * const attrs[] = { "objectSid", "isDeleted", NULL };
2813 const char * const noattrs[] = { NULL };
2814
2815 ldb = ldb_module_get_ctx(ac->module);
2816
2817 /* Finds out the SID/RID of the SAM object */
2818 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->req->op.del.dn,
2819 attrs,
2820 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2821 ac->req);
2822 if (ret != LDB_SUCCESS) {
2823 return ret;
2824 }
2825
2826 if (ldb_msg_check_string_attribute(res->msgs[0], "isDeleted", "TRUE")) {
2827 return LDB_SUCCESS;
2828 }
2829
2830 sid = samdb_result_dom_sid(ac, res->msgs[0], "objectSid");
2831 if (sid == NULL) {
2832 /* No SID - it might not be a SAM object - therefore ok */
2833 return LDB_SUCCESS;
2834 }
2835 status = dom_sid_split_rid(ac, sid, NULL, &rid);
2836 if (!NT_STATUS_IS_OK(status)) {
2837 return ldb_operr(ldb);
2838 }
2839 if (rid == 0) {
2840 /* Special object (security principal?) */
2841 return LDB_SUCCESS;
2842 }
2843 /* do not allow deletion of well-known sids */
2844 if (rid < DSDB_SAMDB_MINIMUM_ALLOWED_RID &&
2845 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
2846 return LDB_ERR_OTHER;
2847 }
2848
2849 /* Deny delete requests from groups which are primary ones */
2850 ret = dsdb_module_search(ac->module, ac, &res,
2851 ldb_get_default_basedn(ldb),
2852 LDB_SCOPE_SUBTREE, noattrs,
2853 DSDB_FLAG_NEXT_MODULE,
2854 ac->req,
2855 "(&(primaryGroupID=%u)(objectClass=user))", rid);
2856 if (ret != LDB_SUCCESS) {
2857 return ret;
2858 }
2859 if (res->count > 0) {
2860 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2861 }
2862
2863 return LDB_SUCCESS;
2864 }
2865
2866 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
2867 {
2868 struct samldb_ctx *ac;
2869 int ret;
2870
2871 if (ldb_dn_is_special(req->op.del.dn)) {
2872 /* do not manipulate our control entries */
2873 return ldb_next_request(module, req);
2874 }
2875
2876 ac = samldb_ctx_init(module, req);
2877 if (ac == NULL) {
2878 return ldb_operr(ldb_module_get_ctx(module));
2879 }
2880
2881 ret = samldb_prim_group_users_check(ac);
2882 if (ret != LDB_SUCCESS) {
2883 return ret;
2884 }
2885
2886 talloc_free(ac);
2887
2888 return ldb_next_request(module, req);
2889 }
2890
2891 /* rename */
2892
2893 static int check_rename_constraints(struct ldb_message *msg,
2894 struct samldb_ctx *ac,
2895 struct ldb_dn *olddn, struct ldb_dn *newdn)
2896 {
2897 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2898 struct ldb_dn *dn1, *dn2, *nc_root;
2899 int32_t systemFlags;
2900 bool move_op = false;
2901 bool rename_op = false;
2902 int ret;
2903
2904 /* Skip the checks if old and new DN are the same, or if we have the
2905 * relax control specified or if the returned objects is already
2906 * deleted and needs only to be moved for consistency. */
2907
2908 if (ldb_dn_compare(olddn, newdn) == 0) {
2909 return LDB_SUCCESS;
2910 }
2911 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) != NULL) {
2912 return LDB_SUCCESS;
2913 }
2914 if (ldb_msg_find_attr_as_bool(msg, "isDeleted", false)) {
2915 return LDB_SUCCESS;
2916 }
2917
2918 /* Objects under CN=System */
2919
2920 dn1 = ldb_dn_copy(ac, ldb_get_default_basedn(ldb));
2921 if (dn1 == NULL) return ldb_oom(ldb);
2922
2923 if ( ! ldb_dn_add_child_fmt(dn1, "CN=System")) {
2924 talloc_free(dn1);
2925 return LDB_ERR_OPERATIONS_ERROR;
2926 }
2927
2928 if ((ldb_dn_compare_base(dn1, olddn) == 0) &&
2929 (ldb_dn_compare_base(dn1, newdn) != 0)) {
2930 talloc_free(dn1);
2931 ldb_asprintf_errstring(ldb,
2932 "subtree_rename: Cannot move/rename %s. Objects under CN=System have to stay under it!",
2933 ldb_dn_get_linearized(olddn));
2934 return LDB_ERR_OTHER;
2935 }
2936
2937 talloc_free(dn1);
2938
2939 /* LSA objects */
2940
2941 if ((samdb_find_attribute(ldb, msg, "objectClass", "secret") != NULL) ||
2942 (samdb_find_attribute(ldb, msg, "objectClass", "trustedDomain") != NULL)) {
2943 ldb_asprintf_errstring(ldb,
2944 "subtree_rename: Cannot move/rename %s. It's an LSA-specific object!",
2945 ldb_dn_get_linearized(olddn));
2946 return LDB_ERR_UNWILLING_TO_PERFORM;
2947 }
2948
2949 /* systemFlags */
2950
2951 dn1 = ldb_dn_get_parent(ac, olddn);
2952 if (dn1 == NULL) return ldb_oom(ldb);
2953 dn2 = ldb_dn_get_parent(ac, newdn);
2954 if (dn2 == NULL) return ldb_oom(ldb);
2955
2956 if (ldb_dn_compare(dn1, dn2) == 0) {
2957 rename_op = true;
2958 } else {
2959 move_op = true;
2960 }
2961
2962 talloc_free(dn1);
2963 talloc_free(dn2);
2964
2965 systemFlags = ldb_msg_find_attr_as_int(msg, "systemFlags", 0);
2966
2967 /* Fetch name context */
2968
2969 ret = dsdb_find_nc_root(ldb, ac, olddn, &nc_root);
2970 if (ret != LDB_SUCCESS) {
2971 return ret;
2972 }
2973
2974 if (ldb_dn_compare(nc_root, ldb_get_schema_basedn(ldb)) == 0) {
2975 if (move_op) {
2976 ldb_asprintf_errstring(ldb,
2977 "subtree_rename: Cannot move %s within schema partition",
2978 ldb_dn_get_linearized(olddn));
2979 return LDB_ERR_UNWILLING_TO_PERFORM;
2980 }
2981 if (rename_op &&
2982 (systemFlags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) != 0) {
2983 ldb_asprintf_errstring(ldb,
2984 "subtree_rename: Cannot rename %s within schema partition",
2985 ldb_dn_get_linearized(olddn));
2986 return LDB_ERR_UNWILLING_TO_PERFORM;
2987 }
2988 } else if (ldb_dn_compare(nc_root, ldb_get_config_basedn(ldb)) == 0) {
2989 if (move_op &&
2990 (systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_MOVE) == 0) {
2991 /* Here we have to do more: control the
2992 * "ALLOW_LIMITED_MOVE" flag. This means that the
2993 * grand-grand-parents of two objects have to be equal
2994 * in order to perform the move (this is used for
2995 * moving "server" objects in the "sites" container). */
2996 bool limited_move =
2997 systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE;
2998
2999 if (limited_move) {
3000 dn1 = ldb_dn_copy(ac, olddn);
3001 if (dn1 == NULL) return ldb_oom(ldb);
3002 dn2 = ldb_dn_copy(ac, newdn);
3003 if (dn2 == NULL) return ldb_oom(ldb);
3004
3005 limited_move &= ldb_dn_remove_child_components(dn1, 3);
3006 limited_move &= ldb_dn_remove_child_components(dn2, 3);
3007 limited_move &= ldb_dn_compare(dn1, dn2) == 0;
3008
3009 talloc_free(dn1);
3010 talloc_free(dn2);
3011 }
3012
3013 if (!limited_move) {
3014 ldb_asprintf_errstring(ldb,
3015 "subtree_rename: Cannot move %s to %s in config partition",
3016 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3017 return LDB_ERR_UNWILLING_TO_PERFORM;
3018 }
3019 }
3020 if (rename_op &&
3021 (systemFlags & SYSTEM_FLAG_CONFIG_ALLOW_RENAME) == 0) {
3022 ldb_asprintf_errstring(ldb,
3023 "subtree_rename: Cannot rename %s to %s within config partition",
3024 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3025 return LDB_ERR_UNWILLING_TO_PERFORM;
3026 }
3027 } else if (ldb_dn_compare(nc_root, ldb_get_default_basedn(ldb)) == 0) {
3028 if (move_op &&
3029 (systemFlags & SYSTEM_FLAG_DOMAIN_DISALLOW_MOVE) != 0) {
3030 ldb_asprintf_errstring(ldb,
3031 "subtree_rename: Cannot move %s to %s - DISALLOW_MOVE set",
3032 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3033 return LDB_ERR_UNWILLING_TO_PERFORM;
3034 }
3035 if (rename_op &&
3036 (systemFlags & SYSTEM_FLAG_DOMAIN_DISALLOW_RENAME) != 0) {
3037 ldb_asprintf_errstring(ldb,
3038 "subtree_rename: Cannot rename %s to %s - DISALLOW_RENAME set",
3039 ldb_dn_get_linearized(olddn), ldb_dn_get_linearized(newdn));
3040 return LDB_ERR_UNWILLING_TO_PERFORM;
3041 }
3042 }
3043
3044 talloc_free(nc_root);
3045
3046 return LDB_SUCCESS;
3047 }
3048
3049
3050 static int samldb_rename_search_base_callback(struct ldb_request *req,
3051 struct ldb_reply *ares)
3052 {
3053 struct samldb_ctx *ac;
3054 int ret;
3055
3056 ac = talloc_get_type(req->context, struct samldb_ctx);
3057
3058 if (!ares) {
3059 return ldb_module_done(ac->req, NULL, NULL,
3060 LDB_ERR_OPERATIONS_ERROR);
3061 }
3062 if (ares->error != LDB_SUCCESS) {
3063 return ldb_module_done(ac->req, ares->controls,
3064 ares->response, ares->error);
3065 }
3066
3067 switch (ares->type) {
3068 case LDB_REPLY_ENTRY:
3069 /*
3070 * This is the root entry of the originating move
3071 * respectively rename request. It has been already
3072 * stored in the list using "subtree_rename_search()".
3073 * Only this one is subject to constraint checking.
3074 */
3075 ret = check_rename_constraints(ares->message, ac,
3076 ac->req->op.rename.olddn,
3077 ac->req->op.rename.newdn);
3078 if (ret != LDB_SUCCESS) {
3079 return ldb_module_done(ac->req, NULL, NULL,
3080 ret);
3081 }
3082 break;
3083
3084 case LDB_REPLY_REFERRAL:
3085 /* ignore */
3086 break;
3087
3088 case LDB_REPLY_DONE:
3089
3090 /*
3091 * Great, no problem with the rename, so go ahead as
3092 * if we never were here
3093 */
3094 ret = ldb_next_request(ac->module, ac->req);
3095 talloc_free(ares);
3096 return ret;
3097 }
3098
3099 talloc_free(ares);
3100 return LDB_SUCCESS;
3101 }
3102
3103
3104 /* rename */
3105 static int samldb_rename(struct ldb_module *module, struct ldb_request *req)
3106 {
3107 struct ldb_context *ldb;
3108 static const char * const attrs[] = { "objectClass", "systemFlags",
3109 "isDeleted", NULL };
3110 struct ldb_request *search_req;
3111 struct samldb_ctx *ac;
3112 int ret;
3113
3114 if (ldb_dn_is_special(req->op.rename.olddn)) { /* do not manipulate our control entries */
3115 return ldb_next_request(module, req);
3116 }
3117
3118 ldb = ldb_module_get_ctx(module);
3119
3120 ac = samldb_ctx_init(module, req);
3121 if (!ac) {
3122 return ldb_oom(ldb);
3123 }
3124
3125 ret = ldb_build_search_req(&search_req, ldb, ac,
3126 req->op.rename.olddn,
3127 LDB_SCOPE_BASE,
3128 "(objectClass=*)",
3129 attrs,
3130 NULL,
3131 ac,
3132 samldb_rename_search_base_callback,
3133 req);
3134 LDB_REQ_SET_LOCATION(search_req);
3135 if (ret != LDB_SUCCESS) {
3136 return ret;
3137 }
3138
3139 ret = ldb_request_add_control(search_req, LDB_CONTROL_SHOW_RECYCLED_OID,
3140 true, NULL);
3141 if (ret != LDB_SUCCESS) {
3142 return ret;
3143 }
3144
3145 return ldb_next_request(ac->module, search_req);
3146 }
3147
3148 /* extended */
3149
3150 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
3151 {
3152 struct ldb_context *ldb = ldb_module_get_ctx(module);
3153 struct dsdb_fsmo_extended_op *exop;
3154 int ret;
3155
3156 exop = talloc_get_type(req->op.extended.data,
3157 struct dsdb_fsmo_extended_op);
3158 if (!exop) {
3159 ldb_set_errstring(ldb,
3160 "samldb_extended_allocate_rid_pool: invalid extended data");
3161 return LDB_ERR_PROTOCOL_ERROR;
3162 }
3163
3164 ret = ridalloc_allocate_rid_pool_fsmo(module, exop, req);
3165 if (ret != LDB_SUCCESS) {
3166 return ret;
3167 }
3168
3169 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
3170 }
3171
3172 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
3173 {
3174 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
3175 return samldb_extended_allocate_rid_pool(module, req);
3176 }
3177
3178 return ldb_next_request(module, req);
3179 }
3180
3181
3182 static const struct ldb_module_ops ldb_samldb_module_ops = {
3183 .name = "samldb",
3184 .add = samldb_add,
3185 .modify = samldb_modify,
3186 .del = samldb_delete,
3187 .rename = samldb_rename,
3188 .extended = samldb_extended
3189 };
3190
3191
3192 int ldb_samldb_module_init(const char *version)
3193 {
3194 LDB_MODULE_CHECK_VERSION(version);
3195 return ldb_register_module(&ldb_samldb_module_ops);
3196 }
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