?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s4:samldb LDB module - remove unused "member" attribute from search filter
[Samba/bjacke.git] / source4 / dsdb / samdb / ldb_modules / samldb.c
blobda9c966ddd9b24a13bcdf83ec22a362b74f8d66f
1 /*
2 SAM ldb module
3
4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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 "dsdb/samdb/samdb.h"
37 #include "dsdb/samdb/ldb_modules/util.h"
38 #include "dsdb/samdb/ldb_modules/ridalloc.h"
39 #include "libcli/security/security.h"
40 #include "librpc/gen_ndr/ndr_security.h"
41 #include "ldb_wrap.h"
42 #include "param/param.h"
43 #include "libds/common/flag_mapping.h"
44
45 struct samldb_ctx;
46 enum samldb_add_type {
47 SAMLDB_TYPE_USER,
48 SAMLDB_TYPE_GROUP,
49 SAMLDB_TYPE_CLASS,
50 SAMLDB_TYPE_ATTRIBUTE
51 };
52
53 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
54
55 struct samldb_step {
56 struct samldb_step *next;
57 samldb_step_fn_t fn;
58 };
59
60 struct samldb_ctx {
61 struct ldb_module *module;
62 struct ldb_request *req;
63
64 /* used for add operations */
65 enum samldb_add_type type;
66
67 /* the resulting message */
68 struct ldb_message *msg;
69
70 /* used in "samldb_find_for_defaultObjectCategory" */
71 struct ldb_dn *dn, *res_dn;
72
73 /* all the async steps necessary to complete the operation */
74 struct samldb_step *steps;
75 struct samldb_step *curstep;
76
77 /* If someone set an ares to forward controls and response back to the caller */
78 struct ldb_reply *ares;
79 };
80
81 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
82 struct ldb_request *req)
83 {
84 struct ldb_context *ldb;
85 struct samldb_ctx *ac;
86
87 ldb = ldb_module_get_ctx(module);
88
89 ac = talloc_zero(req, struct samldb_ctx);
90 if (ac == NULL) {
91 ldb_oom(ldb);
92 return NULL;
93 }
94
95 ac->module = module;
96 ac->req = req;
97
98 return ac;
99 }
100
101 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
102 {
103 struct samldb_step *step, *stepper;
104
105 step = talloc_zero(ac, struct samldb_step);
106 if (step == NULL) {
107 return ldb_oom(ldb_module_get_ctx(ac->module));
108 }
109
110 step->fn = fn;
111
112 if (ac->steps == NULL) {
113 ac->steps = step;
114 ac->curstep = step;
115 } else {
116 if (ac->curstep == NULL)
117 return ldb_operr(ldb_module_get_ctx(ac->module));
118 for (stepper = ac->curstep; stepper->next != NULL;
119 stepper = stepper->next);
120 stepper->next = step;
121 }
122
123 return LDB_SUCCESS;
124 }
125
126 static int samldb_first_step(struct samldb_ctx *ac)
127 {
128 if (ac->steps == NULL) {
129 return ldb_operr(ldb_module_get_ctx(ac->module));
130 }
131
132 ac->curstep = ac->steps;
133 return ac->curstep->fn(ac);
134 }
135
136 static int samldb_next_step(struct samldb_ctx *ac)
137 {
138 if (ac->curstep->next) {
139 ac->curstep = ac->curstep->next;
140 return ac->curstep->fn(ac);
141 }
142
143 /* We exit the samldb module here. If someone set an "ares" to forward
144 * controls and response back to the caller, use them. */
145 if (ac->ares) {
146 return ldb_module_done(ac->req, ac->ares->controls,
147 ac->ares->response, LDB_SUCCESS);
148 } else {
149 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
150 }
151 }
152
153
154 /* sAMAccountName handling */
155
156 static int samldb_generate_sAMAccountName(struct ldb_context *ldb,
157 struct ldb_message *msg)
158 {
159 char *name;
160
161 /* Format: $000000-000000000000 */
162
163 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
164 (unsigned int)generate_random(),
165 (unsigned int)generate_random(),
166 (unsigned int)generate_random());
167 if (name == NULL) {
168 return ldb_oom(ldb);
169 }
170 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
171 }
172
173 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
174 {
175 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
176 const char *name;
177 int ret;
178 struct ldb_result *res;
179 const char * const noattrs[] = { NULL };
180
181 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
182 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
183 if (ret != LDB_SUCCESS) {
184 return ret;
185 }
186 }
187
188 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
189 if (name == NULL) {
190 /* The "sAMAccountName" cannot be nothing */
191 ldb_set_errstring(ldb,
192 "samldb: Empty account names aren't allowed!");
193 return LDB_ERR_CONSTRAINT_VIOLATION;
194 }
195
196 ret = dsdb_module_search(ac->module, ac, &res,
197 ldb_get_default_basedn(ldb), LDB_SCOPE_SUBTREE, noattrs,
198 DSDB_FLAG_NEXT_MODULE,
199 ac->req,
200 "(sAMAccountName=%s)",
201 ldb_binary_encode_string(ac, name));
202 if (ret != LDB_SUCCESS) {
203 return ret;
204 }
205 if (res->count != 0) {
206 ldb_asprintf_errstring(ldb,
207 "samldb: Account name (sAMAccountName) '%s' already in use!",
208 name);
209 talloc_free(res);
210 return LDB_ERR_ENTRY_ALREADY_EXISTS;
211 }
212 talloc_free(res);
213
214 return samldb_next_step(ac);
215 }
216
217
218 static bool samldb_msg_add_sid(struct ldb_message *msg,
219 const char *name,
220 const struct dom_sid *sid)
221 {
222 struct ldb_val v;
223 enum ndr_err_code ndr_err;
224
225 ndr_err = ndr_push_struct_blob(&v, msg, sid,
226 (ndr_push_flags_fn_t)ndr_push_dom_sid);
227 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
228 return false;
229 }
230 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
231 }
232
233
234 /* allocate a SID using our RID Set */
235 static int samldb_allocate_sid(struct samldb_ctx *ac)
236 {
237 uint32_t rid;
238 struct dom_sid *sid;
239 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
240 int ret;
241
242 ret = ridalloc_allocate_rid(ac->module, &rid, ac->req);
243 if (ret != LDB_SUCCESS) {
244 return ret;
245 }
246
247 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
248 if (sid == NULL) {
249 return ldb_module_oom(ac->module);
250 }
251
252 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
253 return ldb_operr(ldb);
254 }
255
256 return samldb_next_step(ac);
257 }
258
259 /*
260 see if a krbtgt_number is available
261 */
262 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac,
263 uint32_t krbtgt_number)
264 {
265 TALLOC_CTX *tmp_ctx = talloc_new(ac);
266 struct ldb_result *res;
267 const char * const no_attrs[] = { NULL };
268 int ret;
269
270 ret = dsdb_module_search(ac->module, tmp_ctx, &res,
271 ldb_get_default_basedn(ldb_module_get_ctx(ac->module)),
272 LDB_SCOPE_SUBTREE, no_attrs,
273 DSDB_FLAG_NEXT_MODULE,
274 ac->req,
275 "(msDC-SecondaryKrbTgtNumber=%u)",
276 krbtgt_number);
277 if (ret == LDB_SUCCESS && res->count == 0) {
278 talloc_free(tmp_ctx);
279 return true;
280 }
281 talloc_free(tmp_ctx);
282 return false;
283 }
284
285 /* special handling for add in RODC join */
286 static int samldb_rodc_add(struct samldb_ctx *ac)
287 {
288 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
289 uint32_t krbtgt_number, i_start, i;
290 int ret;
291 char *newpass;
292 struct ldb_val newpass_utf16;
293
294 /* find a unused msDC-SecondaryKrbTgtNumber */
295 i_start = generate_random() & 0xFFFF;
296 if (i_start == 0) {
297 i_start = 1;
298 }
299
300 for (i=i_start; i<=0xFFFF; i++) {
301 if (samldb_krbtgtnumber_available(ac, i)) {
302 krbtgt_number = i;
303 goto found;
304 }
305 }
306 for (i=1; i<i_start; i++) {
307 if (samldb_krbtgtnumber_available(ac, i)) {
308 krbtgt_number = i;
309 goto found;
310 }
311 }
312
313 ldb_asprintf_errstring(ldb,
314 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
315 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
316 return LDB_ERR_OTHER;
317
318 found:
319 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber",
320 LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
321 if (ret != LDB_SUCCESS) {
322 return ldb_operr(ldb);
323 }
324
325 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
326 "msDS-SecondaryKrbTgtNumber", krbtgt_number);
327 if (ret != LDB_SUCCESS) {
328 return ldb_operr(ldb);
329 }
330
331 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u",
332 krbtgt_number);
333 if (ret != LDB_SUCCESS) {
334 return ldb_operr(ldb);
335 }
336
337 newpass = generate_random_password(ac->msg, 128, 255);
338 if (newpass == NULL) {
339 return ldb_operr(ldb);
340 }
341
342 if (!convert_string_talloc(ac,
343 CH_UNIX, CH_UTF16,
344 newpass, strlen(newpass),
345 (void *)&newpass_utf16.data,
346 &newpass_utf16.length)) {
347 ldb_asprintf_errstring(ldb,
348 "samldb_rodc_add: "
349 "failed to generate UTF16 password from random password");
350 return LDB_ERR_OPERATIONS_ERROR;
351 }
352 ret = ldb_msg_add_steal_value(ac->msg, "clearTextPassword", &newpass_utf16);
353 if (ret != LDB_SUCCESS) {
354 return ldb_operr(ldb);
355 }
356
357 return samldb_next_step(ac);
358 }
359
360 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
361 {
362 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
363 struct ldb_result *res;
364 const char * const no_attrs[] = { NULL };
365 int ret;
366
367 ac->res_dn = NULL;
368
369 ret = dsdb_module_search(ac->module, ac, &res,
370 ac->dn, LDB_SCOPE_BASE, no_attrs,
371 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT
372 | DSDB_FLAG_NEXT_MODULE,
373 ac->req,
374 "(objectClass=classSchema)");
375 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
376 /* Don't be pricky when the DN doesn't exist if we have the */
377 /* RELAX control specified */
378 if (ldb_request_get_control(ac->req,
379 LDB_CONTROL_RELAX_OID) == NULL) {
380 ldb_set_errstring(ldb,
381 "samldb_find_defaultObjectCategory: "
382 "Invalid DN for 'defaultObjectCategory'!");
383 return LDB_ERR_CONSTRAINT_VIOLATION;
384 }
385 }
386 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
387 return ret;
388 }
389
390 if (ret == LDB_SUCCESS) {
391 /* ensure the defaultObjectCategory has a full GUID */
392 struct ldb_message *m;
393 m = ldb_msg_new(ac->msg);
394 if (m == NULL) {
395 return ldb_oom(ldb);
396 }
397 m->dn = ac->msg->dn;
398 if (ldb_msg_add_string(m, "defaultObjectCategory",
399 ldb_dn_get_extended_linearized(m, res->msgs[0]->dn, 1)) !=
400 LDB_SUCCESS) {
401 return ldb_oom(ldb);
402 }
403 m->elements[0].flags = LDB_FLAG_MOD_REPLACE;
404
405 ret = dsdb_module_modify(ac->module, m,
406 DSDB_FLAG_NEXT_MODULE,
407 ac->req);
408 if (ret != LDB_SUCCESS) {
409 return ret;
410 }
411 }
412
413
414 ac->res_dn = ac->dn;
415
416 return samldb_next_step(ac);
417 }
418
419 /**
420 * msDS-IntId attributeSchema attribute handling
421 * during LDB_ADD request processing
422 */
423 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
424 {
425 int ret;
426 bool id_exists;
427 uint32_t msds_intid;
428 int32_t system_flags;
429 struct ldb_context *ldb;
430 struct ldb_result *ldb_res;
431 struct ldb_dn *schema_dn;
432 struct samldb_msds_intid_persistant *msds_intid_struct;
433 struct dsdb_schema *schema;
434
435 ldb = ldb_module_get_ctx(ac->module);
436 schema_dn = ldb_get_schema_basedn(ldb);
437
438 /* replicated update should always go through */
439 if (ldb_request_get_control(ac->req,
440 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
441 return LDB_SUCCESS;
442 }
443
444 /* msDS-IntId is handled by system and should never be
445 * passed by clients */
446 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
447 return LDB_ERR_UNWILLING_TO_PERFORM;
448 }
449
450 /* do not generate msDS-IntId if Relax control is passed */
451 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
452 return LDB_SUCCESS;
453 }
454
455 /* check Functional Level */
456 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
457 return LDB_SUCCESS;
458 }
459
460 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
461 system_flags = ldb_msg_find_attr_as_int(ac->msg, "systemFlags", 0);
462 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
463 return LDB_SUCCESS;
464 }
465 schema = dsdb_get_schema(ldb, NULL);
466 if (!schema) {
467 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
468 "samldb_schema_info_update: no dsdb_schema loaded");
469 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
470 return ldb_operr(ldb);
471 }
472
473 msds_intid_struct = (struct samldb_msds_intid_persistant*) ldb_get_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE);
474 if (!msds_intid_struct) {
475 msds_intid_struct = talloc(ldb, struct samldb_msds_intid_persistant);
476 /* Generate new value for msDs-IntId
477 * Value should be in 0x80000000..0xBFFFFFFF range */
478 msds_intid = generate_random() % 0X3FFFFFFF;
479 msds_intid += 0x80000000;
480 msds_intid_struct->msds_intid = msds_intid;
481 msds_intid_struct->usn = schema->loaded_usn;
482 DEBUG(2, ("No samldb_msds_intid_persistant struct, allocating a new one\n"));
483 } else {
484 msds_intid = msds_intid_struct->msds_intid;
485 }
486
487 /* probe id values until unique one is found */
488 do {
489 uint64_t current_usn;
490 msds_intid++;
491 if (msds_intid > 0xBFFFFFFF) {
492 msds_intid = 0x80000001;
493 }
494 /*
495 * Alternative strategy to a costly (even indexed search) to the
496 * database.
497 * We search in the schema if we have already this intid (using dsdb_attribute_by_attributeID_id because
498 * in the range 0x80000000 0xBFFFFFFFF, attributeID is a DSDB_ATTID_TYPE_INTID).
499 * If so generate another random value.
500 * If not check if the highest USN in the database for the schema partition is the
501 * one that we know.
502 * If so it means that's only this ldb context that is touching the schema in the database.
503 * If not it means that's someone else has modified the database while we are doing our changes too
504 * (this case should be very bery rare) in order to be sure do the search in the database.
505 */
506 if (dsdb_attribute_by_attributeID_id(schema, msds_intid)) {
507 msds_intid = generate_random() % 0X3FFFFFFF;
508 msds_intid += 0x80000000;
509 continue;
510 }
511
512 ret = dsdb_module_load_partition_usn(ac->module, schema->base_dn, &current_usn, NULL, NULL);
513 if (ret != LDB_SUCCESS) {
514 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
515 __location__": Searching for schema USN failed: %s\n",
516 ldb_errstring(ldb));
517 return ldb_operr(ldb);
518 }
519
520 /* current_usn can be lesser than msds_intid_struct-> if there is
521 * uncommited changes.
522 */
523 if (current_usn > msds_intid_struct->usn) {
524 /* oups something has changed, someone/something
525 * else is modifying or has modified the schema
526 * we'd better check this intid is the database directly
527 */
528
529 DEBUG(2, ("Schema has changed, searching the database for the unicity of %d\n",
530 msds_intid));
531
532 ret = dsdb_module_search(ac->module, ac,
533 &ldb_res,
534 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
535 DSDB_FLAG_NEXT_MODULE,
536 ac->req,
537 "(msDS-IntId=%d)", msds_intid);
538 if (ret != LDB_SUCCESS) {
539 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
540 __location__": Searching for msDS-IntId=%d failed - %s\n",
541 msds_intid,
542 ldb_errstring(ldb));
543 return ldb_operr(ldb);
544 }
545 id_exists = (ldb_res->count > 0);
546 talloc_free(ldb_res);
547 } else {
548 id_exists = 0;
549 }
550
551 } while(id_exists);
552 msds_intid_struct->msds_intid = msds_intid;
553 ldb_set_opaque(ldb, SAMLDB_MSDS_INTID_OPAQUE, msds_intid_struct);
554
555 return samdb_msg_add_int(ldb, ac->msg, ac->msg, "msDS-IntId",
556 msds_intid);
557 }
558
559
560 /*
561 * samldb_add_entry (async)
562 */
563
564 static int samldb_add_entry_callback(struct ldb_request *req,
565 struct ldb_reply *ares)
566 {
567 struct ldb_context *ldb;
568 struct samldb_ctx *ac;
569 int ret;
570
571 ac = talloc_get_type(req->context, struct samldb_ctx);
572 ldb = ldb_module_get_ctx(ac->module);
573
574 if (!ares) {
575 return ldb_module_done(ac->req, NULL, NULL,
576 LDB_ERR_OPERATIONS_ERROR);
577 }
578
579 if (ares->type == LDB_REPLY_REFERRAL) {
580 return ldb_module_send_referral(ac->req, ares->referral);
581 }
582
583 if (ares->error != LDB_SUCCESS) {
584 return ldb_module_done(ac->req, ares->controls,
585 ares->response, ares->error);
586 }
587 if (ares->type != LDB_REPLY_DONE) {
588 ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type);
589 return ldb_module_done(ac->req, NULL, NULL,
590 LDB_ERR_OPERATIONS_ERROR);
591 }
592
593 /* The caller may wish to get controls back from the add */
594 ac->ares = talloc_steal(ac, ares);
595
596 ret = samldb_next_step(ac);
597 if (ret != LDB_SUCCESS) {
598 return ldb_module_done(ac->req, NULL, NULL, ret);
599 }
600 return ret;
601 }
602
603 static int samldb_add_entry(struct samldb_ctx *ac)
604 {
605 struct ldb_context *ldb;
606 struct ldb_request *req;
607 int ret;
608
609 ldb = ldb_module_get_ctx(ac->module);
610
611 ret = ldb_build_add_req(&req, ldb, ac,
612 ac->msg,
613 ac->req->controls,
614 ac, samldb_add_entry_callback,
615 ac->req);
616 LDB_REQ_SET_LOCATION(req);
617 if (ret != LDB_SUCCESS) {
618 return ret;
619 }
620
621 return ldb_next_request(ac->module, req);
622 }
623
624 /*
625 * return true if msg carries an attributeSchema that is intended to be RODC
626 * filtered but is also a system-critical attribute.
627 */
628 static bool check_rodc_critical_attribute(struct ldb_message *msg)
629 {
630 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
631
632 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
633 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
634 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE
635 | SEARCH_FLAG_CONFIDENTIAL);
636
637 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
638 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
639 return true;
640 } else {
641 return false;
642 }
643 }
644
645
646 static int samldb_fill_object(struct samldb_ctx *ac)
647 {
648 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
649 int ret;
650
651 /* Add information for the different account types */
652 switch(ac->type) {
653 case SAMLDB_TYPE_USER: {
654 struct ldb_control *rodc_control = ldb_request_get_control(ac->req,
655 LDB_CONTROL_RODC_DCPROMO_OID);
656 if (rodc_control != NULL) {
657 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
658 rodc_control->critical = false;
659 ret = samldb_add_step(ac, samldb_rodc_add);
660 if (ret != LDB_SUCCESS) return ret;
661 }
662
663 /* check if we have a valid sAMAccountName */
664 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
665 if (ret != LDB_SUCCESS) return ret;
666
667 ret = samldb_add_step(ac, samldb_add_entry);
668 if (ret != LDB_SUCCESS) return ret;
669 break;
670 }
671
672 case SAMLDB_TYPE_GROUP: {
673 /* check if we have a valid sAMAccountName */
674 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
675 if (ret != LDB_SUCCESS) return ret;
676
677 ret = samldb_add_step(ac, samldb_add_entry);
678 if (ret != LDB_SUCCESS) return ret;
679 break;
680 }
681
682 case SAMLDB_TYPE_CLASS: {
683 const struct ldb_val *rdn_value, *def_obj_cat_val;
684 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "objectClassCategory", -2);
685
686 /* As discussed with Microsoft through dochelp in April 2012 this is the behavior of windows*/
687 if (!ldb_msg_find_element(ac->msg, "subClassOf")) {
688 ret = ldb_msg_add_string(ac->msg, "subClassOf", "top");
689 if (ret != LDB_SUCCESS) return ret;
690 }
691
692 ret = samdb_find_or_add_attribute(ldb, ac->msg,
693 "rdnAttId", "cn");
694 if (ret != LDB_SUCCESS) return ret;
695
696 /* do not allow to mark an attributeSchema as RODC filtered if it
697 * is system-critical */
698 if (check_rodc_critical_attribute(ac->msg)) {
699 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
700 ldb_dn_get_linearized(ac->msg->dn));
701 return LDB_ERR_UNWILLING_TO_PERFORM;
702 }
703
704 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
705 if (rdn_value == NULL) {
706 return ldb_operr(ldb);
707 }
708 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
709 /* the RDN has prefix "CN" */
710 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
711 samdb_cn_to_lDAPDisplayName(ac->msg,
712 (const char *) rdn_value->data));
713 if (ret != LDB_SUCCESS) {
714 ldb_oom(ldb);
715 return ret;
716 }
717 }
718
719 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
720 struct GUID guid;
721 /* a new GUID */
722 guid = GUID_random();
723 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
724 if (ret != LDB_SUCCESS) {
725 ldb_oom(ldb);
726 return ret;
727 }
728 }
729
730 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
731 "defaultObjectCategory");
732 if (def_obj_cat_val != NULL) {
733 /* "defaultObjectCategory" has been set by the caller.
734 * Do some checks for consistency.
735 * NOTE: The real constraint check (that
736 * 'defaultObjectCategory' is the DN of the new
737 * objectclass or any parent of it) is still incomplete.
738 * For now we say that 'defaultObjectCategory' is valid
739 * if it exists and it is of objectclass "classSchema".
740 */
741 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
742 if (ac->dn == NULL) {
743 ldb_set_errstring(ldb,
744 "Invalid DN for 'defaultObjectCategory'!");
745 return LDB_ERR_CONSTRAINT_VIOLATION;
746 }
747 } else {
748 /* "defaultObjectCategory" has not been set by the
749 * caller. Use the entry DN for it. */
750 ac->dn = ac->msg->dn;
751
752 ret = ldb_msg_add_string(ac->msg, "defaultObjectCategory",
753 ldb_dn_alloc_linearized(ac->msg, ac->dn));
754 if (ret != LDB_SUCCESS) {
755 ldb_oom(ldb);
756 return ret;
757 }
758 }
759
760 ret = samldb_add_step(ac, samldb_add_entry);
761 if (ret != LDB_SUCCESS) return ret;
762
763 /* Now perform the checks for the 'defaultObjectCategory'. The
764 * lookup DN was already saved in "ac->dn" */
765 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
766 if (ret != LDB_SUCCESS) return ret;
767
768 /* -2 is not a valid objectClassCategory so it means the attribute wasn't present */
769 if (v == -2) {
770 /* Windows 2003 does this*/
771 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "objectClassCategory", 0);
772 if (ret != LDB_SUCCESS) {
773 return ret;
774 }
775 }
776 break;
777 }
778
779 case SAMLDB_TYPE_ATTRIBUTE: {
780 const struct ldb_val *rdn_value;
781 struct ldb_message_element *el;
782 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
783 if (rdn_value == NULL) {
784 return ldb_operr(ldb);
785 }
786 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
787 /* the RDN has prefix "CN" */
788 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
789 samdb_cn_to_lDAPDisplayName(ac->msg,
790 (const char *) rdn_value->data));
791 if (ret != LDB_SUCCESS) {
792 ldb_oom(ldb);
793 return ret;
794 }
795 }
796
797 /* do not allow to mark an attributeSchema as RODC filtered if it
798 * is system-critical */
799 if (check_rodc_critical_attribute(ac->msg)) {
800 ldb_asprintf_errstring(ldb,
801 "samldb: refusing schema add of %s - cannot combine critical attribute with RODC filtering",
802 ldb_dn_get_linearized(ac->msg->dn));
803 return LDB_ERR_UNWILLING_TO_PERFORM;
804 }
805
806 ret = samdb_find_or_add_attribute(ldb, ac->msg,
807 "isSingleValued", "FALSE");
808 if (ret != LDB_SUCCESS) return ret;
809
810 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
811 struct GUID guid;
812 /* a new GUID */
813 guid = GUID_random();
814 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
815 if (ret != LDB_SUCCESS) {
816 ldb_oom(ldb);
817 return ret;
818 }
819 }
820
821 el = ldb_msg_find_element(ac->msg, "attributeSyntax");
822 if (el) {
823 /*
824 * No need to scream if there isn't as we have code later on
825 * that will take care of it.
826 */
827 const struct dsdb_syntax *syntax = find_syntax_map_by_ad_oid((const char *)el->values[0].data);
828 if (!syntax) {
829 DEBUG(9, ("Can't find dsdb_syntax object for attributeSyntax %s\n",
830 (const char *)el->values[0].data));
831 } else {
832 unsigned int v = ldb_msg_find_attr_as_uint(ac->msg, "oMSyntax", 0);
833 const struct ldb_val *val = ldb_msg_find_ldb_val(ac->msg, "oMObjectClass");
834
835 if (v == 0) {
836 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "oMSyntax", syntax->oMSyntax);
837 if (ret != LDB_SUCCESS) {
838 return ret;
839 }
840 }
841 if (!val) {
842 struct ldb_val val2 = ldb_val_dup(ldb, &syntax->oMObjectClass);
843 if (val2.length > 0) {
844 ret = ldb_msg_add_value(ac->msg, "oMObjectClass", &val2, NULL);
845 if (ret != LDB_SUCCESS) {
846 return ret;
847 }
848 }
849 }
850 }
851 }
852
853 /* handle msDS-IntID attribute */
854 ret = samldb_add_handle_msDS_IntId(ac);
855 if (ret != LDB_SUCCESS) return ret;
856
857 ret = samldb_add_step(ac, samldb_add_entry);
858 if (ret != LDB_SUCCESS) return ret;
859 break;
860 }
861
862 default:
863 ldb_asprintf_errstring(ldb, "Invalid entry type!");
864 return LDB_ERR_OPERATIONS_ERROR;
865 break;
866 }
867
868 return samldb_first_step(ac);
869 }
870
871 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
872 {
873 struct ldb_context *ldb;
874 const struct ldb_val *rdn_value;
875 struct dom_sid *sid;
876 int ret;
877
878 ldb = ldb_module_get_ctx(ac->module);
879
880 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
881 if (sid == NULL) {
882 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
883 if (rdn_value == NULL) {
884 return ldb_operr(ldb);
885 }
886 sid = dom_sid_parse_talloc(ac->msg,
887 (const char *)rdn_value->data);
888 if (sid == NULL) {
889 ldb_set_errstring(ldb,
890 "samldb: No valid SID found in ForeignSecurityPrincipal CN!");
891 return LDB_ERR_CONSTRAINT_VIOLATION;
892 }
893 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
894 return ldb_operr(ldb);
895 }
896 }
897
898 /* finally proceed with adding the entry */
899 ret = samldb_add_step(ac, samldb_add_entry);
900 if (ret != LDB_SUCCESS) return ret;
901
902 return samldb_first_step(ac);
903 }
904
905 static int samldb_schema_info_update(struct samldb_ctx *ac)
906 {
907 int ret;
908 struct ldb_context *ldb;
909 struct dsdb_schema *schema;
910
911 /* replicated update should always go through */
912 if (ldb_request_get_control(ac->req,
913 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
914 return LDB_SUCCESS;
915 }
916
917 /* do not update schemaInfo during provisioning */
918 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
919 return LDB_SUCCESS;
920 }
921
922 ldb = ldb_module_get_ctx(ac->module);
923 schema = dsdb_get_schema(ldb, NULL);
924 if (!schema) {
925 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
926 "samldb_schema_info_update: no dsdb_schema loaded");
927 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
928 return ldb_operr(ldb);
929 }
930
931 ret = dsdb_module_schema_info_update(ac->module, schema,
932 DSDB_FLAG_NEXT_MODULE|
933 DSDB_FLAG_AS_SYSTEM,
934 ac->req);
935 if (ret != LDB_SUCCESS) {
936 ldb_asprintf_errstring(ldb,
937 "samldb_schema_info_update: dsdb_module_schema_info_update failed with %s",
938 ldb_errstring(ldb));
939 return ret;
940 }
941
942 return LDB_SUCCESS;
943 }
944
945 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid);
946
947 /*
948 * "Objectclass" trigger (MS-SAMR 3.1.1.8.1)
949 *
950 * Has to be invoked on "add" and "modify" operations on "user", "computer" and
951 * "group" objects.
952 * ac->msg contains the "add"/"modify" message
953 * ac->type contains the object type (main objectclass)
954 */
955 static int samldb_objectclass_trigger(struct samldb_ctx *ac)
956 {
957 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
958 void *skip_allocate_sids = ldb_get_opaque(ldb,
959 "skip_allocate_sids");
960 struct ldb_message_element *el, *el2;
961 struct dom_sid *sid;
962 int ret;
963
964 /* make sure that "sAMAccountType" is not specified */
965 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
966 if (el != NULL) {
967 ldb_set_errstring(ldb,
968 "samldb: sAMAccountType must not be specified!");
969 return LDB_ERR_UNWILLING_TO_PERFORM;
970 }
971
972 /* Step 1: objectSid assignment */
973
974 /* Don't allow the objectSid to be changed. But beside the RELAX
975 * control we have also to guarantee that it can always be set with
976 * SYSTEM permissions. This is needed for the "samba3sam" backend. */
977 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
978 if ((sid != NULL) && (!dsdb_module_am_system(ac->module)) &&
979 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
980 ldb_set_errstring(ldb,
981 "samldb: objectSid must not be specified!");
982 return LDB_ERR_UNWILLING_TO_PERFORM;
983 }
984
985 /* but generate a new SID when we do have an add operations */
986 if ((sid == NULL) && (ac->req->operation == LDB_ADD) && !skip_allocate_sids) {
987 ret = samldb_add_step(ac, samldb_allocate_sid);
988 if (ret != LDB_SUCCESS) return ret;
989 }
990
991 switch(ac->type) {
992 case SAMLDB_TYPE_USER: {
993 bool uac_generated = false;
994
995 /* Step 1.2: Default values */
996 ret = samdb_find_or_add_attribute(ldb, ac->msg,
997 "accountExpires", "9223372036854775807");
998 if (ret != LDB_SUCCESS) return ret;
999 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1000 "badPasswordTime", "0");
1001 if (ret != LDB_SUCCESS) return ret;
1002 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1003 "badPwdCount", "0");
1004 if (ret != LDB_SUCCESS) return ret;
1005 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1006 "codePage", "0");
1007 if (ret != LDB_SUCCESS) return ret;
1008 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1009 "countryCode", "0");
1010 if (ret != LDB_SUCCESS) return ret;
1011 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1012 "lastLogoff", "0");
1013 if (ret != LDB_SUCCESS) return ret;
1014 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1015 "lastLogon", "0");
1016 if (ret != LDB_SUCCESS) return ret;
1017 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1018 "logonCount", "0");
1019 if (ret != LDB_SUCCESS) return ret;
1020 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1021 "pwdLastSet", "0");
1022 if (ret != LDB_SUCCESS) return ret;
1023
1024 /* On add operations we might need to generate a
1025 * "userAccountControl" (if it isn't specified). */
1026 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1027 if ((el == NULL) && (ac->req->operation == LDB_ADD)) {
1028 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1029 "userAccountControl",
1030 UF_NORMAL_ACCOUNT);
1031 if (ret != LDB_SUCCESS) {
1032 return ret;
1033 }
1034 uac_generated = true;
1035 }
1036
1037 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1038 if (el != NULL) {
1039 uint32_t user_account_control, account_type;
1040
1041 /* Step 1.3: "userAccountControl" -> "sAMAccountType" mapping */
1042 user_account_control = ldb_msg_find_attr_as_uint(ac->msg,
1043 "userAccountControl",
1044 0);
1045
1046 /* Temporary duplicate accounts aren't allowed */
1047 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1048 return LDB_ERR_OTHER;
1049 }
1050
1051 /* Workstation and (read-only) DC objects do need objectclass "computer" */
1052 if ((samdb_find_attribute(ldb, ac->msg,
1053 "objectclass", "computer") == NULL) &&
1054 (user_account_control &
1055 (UF_SERVER_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT))) {
1056 ldb_set_errstring(ldb,
1057 "samldb: Requested account type does need objectclass 'computer'!");
1058 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1059 }
1060
1061 account_type = ds_uf2atype(user_account_control);
1062 if (account_type == 0) {
1063 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1064 return LDB_ERR_UNWILLING_TO_PERFORM;
1065 }
1066 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1067 "sAMAccountType",
1068 account_type);
1069 if (ret != LDB_SUCCESS) {
1070 return ret;
1071 }
1072 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1073 el2->flags = LDB_FLAG_MOD_REPLACE;
1074
1075 /* "isCriticalSystemObject" might be set */
1076 if (user_account_control &
1077 (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1078 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1079 "TRUE");
1080 if (ret != LDB_SUCCESS) {
1081 return ret;
1082 }
1083 el2 = ldb_msg_find_element(ac->msg,
1084 "isCriticalSystemObject");
1085 el2->flags = LDB_FLAG_MOD_REPLACE;
1086 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1087 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1088 "FALSE");
1089 if (ret != LDB_SUCCESS) {
1090 return ret;
1091 }
1092 el2 = ldb_msg_find_element(ac->msg,
1093 "isCriticalSystemObject");
1094 el2->flags = LDB_FLAG_MOD_REPLACE;
1095 }
1096
1097 /* Step 1.4: "userAccountControl" -> "primaryGroupID" mapping */
1098 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1099 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1100
1101 /*
1102 * Older AD deployments don't know about the
1103 * RODC group
1104 */
1105 if (rid == DOMAIN_RID_READONLY_DCS) {
1106 ret = samldb_prim_group_tester(ac, rid);
1107 if (ret != LDB_SUCCESS) {
1108 return ret;
1109 }
1110 }
1111
1112 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1113 "primaryGroupID", rid);
1114 if (ret != LDB_SUCCESS) {
1115 return ret;
1116 }
1117 el2 = ldb_msg_find_element(ac->msg,
1118 "primaryGroupID");
1119 el2->flags = LDB_FLAG_MOD_REPLACE;
1120 }
1121
1122 /* Step 1.5: Add additional flags when needed */
1123 /* Obviously this is done when the "userAccountControl"
1124 * has been generated here (tested against Windows
1125 * Server) */
1126 if (uac_generated) {
1127 user_account_control |= UF_ACCOUNTDISABLE;
1128 user_account_control |= UF_PASSWD_NOTREQD;
1129
1130 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
1131 "userAccountControl",
1132 user_account_control);
1133 if (ret != LDB_SUCCESS) {
1134 return ret;
1135 }
1136 }
1137 }
1138 break;
1139 }
1140
1141 case SAMLDB_TYPE_GROUP: {
1142 const char *tempstr;
1143
1144 /* Step 2.2: Default values */
1145 tempstr = talloc_asprintf(ac->msg, "%d",
1146 GTYPE_SECURITY_GLOBAL_GROUP);
1147 if (tempstr == NULL) return ldb_operr(ldb);
1148 ret = samdb_find_or_add_attribute(ldb, ac->msg,
1149 "groupType", tempstr);
1150 if (ret != LDB_SUCCESS) return ret;
1151
1152 /* Step 2.3: "groupType" -> "sAMAccountType" */
1153 el = ldb_msg_find_element(ac->msg, "groupType");
1154 if (el != NULL) {
1155 uint32_t group_type, account_type;
1156
1157 group_type = ldb_msg_find_attr_as_uint(ac->msg,
1158 "groupType", 0);
1159
1160 /* The creation of builtin groups requires the
1161 * RELAX control */
1162 if (group_type == GTYPE_SECURITY_BUILTIN_LOCAL_GROUP) {
1163 if (ldb_request_get_control(ac->req,
1164 LDB_CONTROL_RELAX_OID) == NULL) {
1165 return LDB_ERR_UNWILLING_TO_PERFORM;
1166 }
1167 }
1168
1169 account_type = ds_gtype2atype(group_type);
1170 if (account_type == 0) {
1171 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1172 return LDB_ERR_UNWILLING_TO_PERFORM;
1173 }
1174 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1175 "sAMAccountType",
1176 account_type);
1177 if (ret != LDB_SUCCESS) {
1178 return ret;
1179 }
1180 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1181 el2->flags = LDB_FLAG_MOD_REPLACE;
1182 }
1183 break;
1184 }
1185
1186 default:
1187 ldb_asprintf_errstring(ldb,
1188 "Invalid entry type!");
1189 return LDB_ERR_OPERATIONS_ERROR;
1190 break;
1191 }
1192
1193 return LDB_SUCCESS;
1194 }
1195
1196 /*
1197 * "Primary group ID" trigger (MS-SAMR 3.1.1.8.2)
1198 *
1199 * Has to be invoked on "add" and "modify" operations on "user" and "computer"
1200 * objects.
1201 * ac->msg contains the "add"/"modify" message
1202 */
1203
1204 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid)
1205 {
1206 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1207 struct dom_sid *sid;
1208 struct ldb_result *res;
1209 int ret;
1210 const char * const noattrs[] = { NULL };
1211
1212 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1213 if (sid == NULL) {
1214 return ldb_operr(ldb);
1215 }
1216
1217 ret = dsdb_module_search(ac->module, ac, &res,
1218 ldb_get_default_basedn(ldb),
1219 LDB_SCOPE_SUBTREE,
1220 noattrs, DSDB_FLAG_NEXT_MODULE,
1221 ac->req,
1222 "(objectSid=%s)",
1223 ldap_encode_ndr_dom_sid(ac, sid));
1224 if (ret != LDB_SUCCESS) {
1225 return ret;
1226 }
1227 if (res->count != 1) {
1228 talloc_free(res);
1229 ldb_asprintf_errstring(ldb,
1230 "Failed to find primary group with RID %u!",
1231 rid);
1232 return LDB_ERR_UNWILLING_TO_PERFORM;
1233 }
1234 talloc_free(res);
1235
1236 return LDB_SUCCESS;
1237 }
1238
1239 static int samldb_prim_group_set(struct samldb_ctx *ac)
1240 {
1241 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1242 uint32_t rid;
1243
1244 rid = ldb_msg_find_attr_as_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1245 if (rid == (uint32_t) -1) {
1246 /* we aren't affected of any primary group set */
1247 return LDB_SUCCESS;
1248
1249 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1250 ldb_set_errstring(ldb,
1251 "The primary group isn't settable on add operations!");
1252 return LDB_ERR_UNWILLING_TO_PERFORM;
1253 }
1254
1255 return samldb_prim_group_tester(ac, rid);
1256 }
1257
1258 static int samldb_prim_group_change(struct samldb_ctx *ac)
1259 {
1260 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1261 const char * const attrs[] = { "primaryGroupID", "memberOf", NULL };
1262 struct ldb_result *res, *group_res;
1263 struct ldb_message_element *el;
1264 struct ldb_message *msg;
1265 uint32_t prev_rid, new_rid;
1266 struct dom_sid *prev_sid, *new_sid;
1267 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1268 int ret;
1269 const char * const noattrs[] = { NULL };
1270
1271 el = dsdb_get_single_valued_attr(ac->msg, "primaryGroupID",
1272 ac->req->operation);
1273 if (el == NULL) {
1274 /* we are not affected */
1275 return LDB_SUCCESS;
1276 }
1277
1278 /* Fetch information from the existing object */
1279
1280 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1281 DSDB_FLAG_NEXT_MODULE, ac->req);
1282 if (ret != LDB_SUCCESS) {
1283 return ret;
1284 }
1285
1286 /* Finds out the DN of the old primary group */
1287
1288 prev_rid = ldb_msg_find_attr_as_uint(res->msgs[0], "primaryGroupID",
1289 (uint32_t) -1);
1290 if (prev_rid == (uint32_t) -1) {
1291 /* User objects do always have a mandatory "primaryGroupID"
1292 * attribute. If this doesn't exist then the object is of the
1293 * wrong type. This is the exact Windows error code */
1294 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1295 }
1296
1297 prev_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), prev_rid);
1298 if (prev_sid == NULL) {
1299 return ldb_operr(ldb);
1300 }
1301
1302 /* Finds out the DN of the new primary group
1303 * Notice: in order to parse the primary group ID correctly we create
1304 * a temporary message here. */
1305
1306 msg = ldb_msg_new(ac->msg);
1307 if (msg == NULL) {
1308 return ldb_module_oom(ac->module);
1309 }
1310 ret = ldb_msg_add(msg, el, 0);
1311 if (ret != LDB_SUCCESS) {
1312 return ret;
1313 }
1314 new_rid = ldb_msg_find_attr_as_uint(msg, "primaryGroupID", (uint32_t) -1);
1315 talloc_free(msg);
1316 if (new_rid == (uint32_t) -1) {
1317 /* we aren't affected of any primary group change */
1318 return LDB_SUCCESS;
1319 }
1320
1321 if (prev_rid == new_rid) {
1322 return LDB_SUCCESS;
1323 }
1324
1325 ret = dsdb_module_search(ac->module, ac, &group_res,
1326 ldb_get_default_basedn(ldb),
1327 LDB_SCOPE_SUBTREE,
1328 noattrs, DSDB_FLAG_NEXT_MODULE,
1329 ac->req,
1330 "(objectSid=%s)",
1331 ldap_encode_ndr_dom_sid(ac, prev_sid));
1332 if (ret != LDB_SUCCESS) {
1333 return ret;
1334 }
1335 if (group_res->count != 1) {
1336 return ldb_operr(ldb);
1337 }
1338 prev_prim_group_dn = group_res->msgs[0]->dn;
1339
1340 new_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), new_rid);
1341 if (new_sid == NULL) {
1342 return ldb_operr(ldb);
1343 }
1344
1345 ret = dsdb_module_search(ac->module, ac, &group_res,
1346 ldb_get_default_basedn(ldb),
1347 LDB_SCOPE_SUBTREE,
1348 noattrs, DSDB_FLAG_NEXT_MODULE,
1349 ac->req,
1350 "(objectSid=%s)",
1351 ldap_encode_ndr_dom_sid(ac, new_sid));
1352 if (ret != LDB_SUCCESS) {
1353 return ret;
1354 }
1355 if (group_res->count != 1) {
1356 /* Here we know if the specified new primary group candidate is
1357 * valid or not. */
1358 return LDB_ERR_UNWILLING_TO_PERFORM;
1359 }
1360 new_prim_group_dn = group_res->msgs[0]->dn;
1361
1362 /* We need to be already a normal member of the new primary
1363 * group in order to be successful. */
1364 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1365 ldb_dn_get_linearized(new_prim_group_dn));
1366 if (el == NULL) {
1367 return LDB_ERR_UNWILLING_TO_PERFORM;
1368 }
1369
1370 /* Remove the "member" attribute on the new primary group */
1371 msg = ldb_msg_new(ac->msg);
1372 if (msg == NULL) {
1373 return ldb_module_oom(ac->module);
1374 }
1375 msg->dn = new_prim_group_dn;
1376
1377 ret = samdb_msg_add_delval(ldb, msg, msg, "member",
1378 ldb_dn_get_linearized(ac->msg->dn));
1379 if (ret != LDB_SUCCESS) {
1380 return ret;
1381 }
1382
1383 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1384 if (ret != LDB_SUCCESS) {
1385 return ret;
1386 }
1387 talloc_free(msg);
1388
1389 /* Add a "member" attribute for the previous primary group */
1390 msg = ldb_msg_new(ac->msg);
1391 if (msg == NULL) {
1392 return ldb_module_oom(ac->module);
1393 }
1394 msg->dn = prev_prim_group_dn;
1395
1396 ret = samdb_msg_add_addval(ldb, msg, msg, "member",
1397 ldb_dn_get_linearized(ac->msg->dn));
1398 if (ret != LDB_SUCCESS) {
1399 return ret;
1400 }
1401
1402 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1403 if (ret != LDB_SUCCESS) {
1404 return ret;
1405 }
1406 talloc_free(msg);
1407
1408 return LDB_SUCCESS;
1409 }
1410
1411 static int samldb_prim_group_trigger(struct samldb_ctx *ac)
1412 {
1413 int ret;
1414
1415 if (ac->req->operation == LDB_ADD) {
1416 ret = samldb_prim_group_set(ac);
1417 } else {
1418 ret = samldb_prim_group_change(ac);
1419 }
1420
1421 return ret;
1422 }
1423
1424
1425 /**
1426 * This function is called on LDB modify operations. It performs some additions/
1427 * replaces on the current LDB message when "userAccountControl" changes.
1428 */
1429 static int samldb_user_account_control_change(struct samldb_ctx *ac)
1430 {
1431 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1432 uint32_t user_account_control, old_user_account_control, account_type;
1433 struct ldb_message_element *el;
1434 struct ldb_message *tmp_msg;
1435 int ret;
1436 struct ldb_result *res;
1437 const char * const attrs[] = { "userAccountControl", "objectClass", NULL };
1438 unsigned int i;
1439 bool is_computer = false;
1440
1441 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1442 ac->req->operation);
1443 if (el == NULL) {
1444 /* we are not affected */
1445 return LDB_SUCCESS;
1446 }
1447
1448 /* Create a temporary message for fetching the "userAccountControl" */
1449 tmp_msg = ldb_msg_new(ac->msg);
1450 if (tmp_msg == NULL) {
1451 return ldb_module_oom(ac->module);
1452 }
1453 ret = ldb_msg_add(tmp_msg, el, 0);
1454 if (ret != LDB_SUCCESS) {
1455 return ret;
1456 }
1457 user_account_control = ldb_msg_find_attr_as_uint(tmp_msg,
1458 "userAccountControl",
1459 0);
1460 talloc_free(tmp_msg);
1461
1462 /* Temporary duplicate accounts aren't allowed */
1463 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1464 return LDB_ERR_OTHER;
1465 }
1466
1467 /* Fetch the old "userAccountControl" and "objectClass" */
1468 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1469 DSDB_FLAG_NEXT_MODULE, ac->req);
1470 if (ret != LDB_SUCCESS) {
1471 return ret;
1472 }
1473 old_user_account_control = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1474 if (old_user_account_control == 0) {
1475 return ldb_operr(ldb);
1476 }
1477 el = ldb_msg_find_element(res->msgs[0], "objectClass");
1478 if (el == NULL) {
1479 return ldb_operr(ldb);
1480 }
1481
1482 /* When we do not have objectclass "computer" we cannot switch to a (read-only) DC */
1483 for (i = 0; i < el->num_values; i++) {
1484 if (ldb_attr_cmp((char *)el->values[i].data, "computer") == 0) {
1485 is_computer = true;
1486 break;
1487 }
1488 }
1489 if (!is_computer &&
1490 (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT))) {
1491 ldb_set_errstring(ldb,
1492 "samldb: Requested account type does need objectclass 'computer'!");
1493 return LDB_ERR_UNWILLING_TO_PERFORM;
1494 }
1495
1496 /*
1497 * The functions "ds_uf2atype" and "ds_uf2prim_group_rid" are used as
1498 * detectors for account type changes.
1499 * So if the account type does change then we need to adjust the
1500 * "sAMAccountType", the "isCriticalSystemObject" and the
1501 * "primaryGroupID" attribute.
1502 */
1503 if ((ds_uf2atype(user_account_control)
1504 == ds_uf2atype(old_user_account_control)) &&
1505 (ds_uf2prim_group_rid(user_account_control)
1506 == ds_uf2prim_group_rid(old_user_account_control))) {
1507 return LDB_SUCCESS;
1508 }
1509
1510 account_type = ds_uf2atype(user_account_control);
1511 if (account_type == 0) {
1512 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1513 return LDB_ERR_UNWILLING_TO_PERFORM;
1514 }
1515 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1516 account_type);
1517 if (ret != LDB_SUCCESS) {
1518 return ret;
1519 }
1520 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1521 el->flags = LDB_FLAG_MOD_REPLACE;
1522
1523 /* "isCriticalSystemObject" might be set/changed */
1524 if (user_account_control
1525 & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1526 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1527 "TRUE");
1528 if (ret != LDB_SUCCESS) {
1529 return ret;
1530 }
1531 el = ldb_msg_find_element(ac->msg,
1532 "isCriticalSystemObject");
1533 el->flags = LDB_FLAG_MOD_REPLACE;
1534 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1535 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1536 "FALSE");
1537 if (ret != LDB_SUCCESS) {
1538 return ret;
1539 }
1540 el = ldb_msg_find_element(ac->msg,
1541 "isCriticalSystemObject");
1542 el->flags = LDB_FLAG_MOD_REPLACE;
1543 }
1544
1545 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1546 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1547
1548 /* Older AD deployments don't know about the RODC group */
1549 if (rid == DOMAIN_RID_READONLY_DCS) {
1550 ret = samldb_prim_group_tester(ac, rid);
1551 if (ret != LDB_SUCCESS) {
1552 return ret;
1553 }
1554 }
1555
1556 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1557 "primaryGroupID", rid);
1558 if (ret != LDB_SUCCESS) {
1559 return ret;
1560 }
1561 el = ldb_msg_find_element(ac->msg,
1562 "primaryGroupID");
1563 el->flags = LDB_FLAG_MOD_REPLACE;
1564 }
1565
1566 return LDB_SUCCESS;
1567 }
1568
1569 static int samldb_group_type_change(struct samldb_ctx *ac)
1570 {
1571 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1572 uint32_t group_type, old_group_type, account_type;
1573 struct ldb_message_element *el;
1574 struct ldb_message *tmp_msg;
1575 int ret;
1576 struct ldb_result *res;
1577 const char * const attrs[] = { "groupType", NULL };
1578
1579 el = dsdb_get_single_valued_attr(ac->msg, "groupType",
1580 ac->req->operation);
1581 if (el == NULL) {
1582 /* we are not affected */
1583 return LDB_SUCCESS;
1584 }
1585
1586 /* Create a temporary message for fetching the "groupType" */
1587 tmp_msg = ldb_msg_new(ac->msg);
1588 if (tmp_msg == NULL) {
1589 return ldb_module_oom(ac->module);
1590 }
1591 ret = ldb_msg_add(tmp_msg, el, 0);
1592 if (ret != LDB_SUCCESS) {
1593 return ret;
1594 }
1595 group_type = ldb_msg_find_attr_as_uint(tmp_msg, "groupType", 0);
1596 talloc_free(tmp_msg);
1597
1598 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1599 DSDB_FLAG_NEXT_MODULE |
1600 DSDB_SEARCH_SHOW_DELETED, ac->req);
1601 if (ret != LDB_SUCCESS) {
1602 return ret;
1603 }
1604 old_group_type = ldb_msg_find_attr_as_uint(res->msgs[0], "groupType", 0);
1605 if (old_group_type == 0) {
1606 return ldb_operr(ldb);
1607 }
1608
1609 /* Group type switching isn't so easy as it seems: We can only
1610 * change in this directions: global <-> universal <-> local
1611 * On each step also the group type itself
1612 * (security/distribution) is variable. */
1613
1614 if (ldb_request_get_control(ac->req, LDB_CONTROL_PROVISION_OID) == NULL) {
1615 switch (group_type) {
1616 case GTYPE_SECURITY_GLOBAL_GROUP:
1617 case GTYPE_DISTRIBUTION_GLOBAL_GROUP:
1618 /* change to "universal" allowed */
1619 if ((old_group_type == GTYPE_SECURITY_DOMAIN_LOCAL_GROUP) ||
1620 (old_group_type == GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP)) {
1621 ldb_set_errstring(ldb,
1622 "samldb: Change from security/distribution local group forbidden!");
1623 return LDB_ERR_UNWILLING_TO_PERFORM;
1624 }
1625 break;
1626
1627 case GTYPE_SECURITY_UNIVERSAL_GROUP:
1628 case GTYPE_DISTRIBUTION_UNIVERSAL_GROUP:
1629 /* each change allowed */
1630 break;
1631 case GTYPE_SECURITY_DOMAIN_LOCAL_GROUP:
1632 case GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP:
1633 /* change to "universal" allowed */
1634 if ((old_group_type == GTYPE_SECURITY_GLOBAL_GROUP) ||
1635 (old_group_type == GTYPE_DISTRIBUTION_GLOBAL_GROUP)) {
1636 ldb_set_errstring(ldb,
1637 "samldb: Change from security/distribution global group forbidden!");
1638 return LDB_ERR_UNWILLING_TO_PERFORM;
1639 }
1640 break;
1641
1642 case GTYPE_SECURITY_BUILTIN_LOCAL_GROUP:
1643 default:
1644 /* we don't allow this "groupType" values */
1645 return LDB_ERR_UNWILLING_TO_PERFORM;
1646 break;
1647 }
1648 }
1649
1650 account_type = ds_gtype2atype(group_type);
1651 if (account_type == 0) {
1652 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1653 return LDB_ERR_UNWILLING_TO_PERFORM;
1654 }
1655 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1656 account_type);
1657 if (ret != LDB_SUCCESS) {
1658 return ret;
1659 }
1660 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1661 el->flags = LDB_FLAG_MOD_REPLACE;
1662
1663 return LDB_SUCCESS;
1664 }
1665
1666 static int samldb_sam_accountname_check(struct samldb_ctx *ac)
1667 {
1668 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1669 const char * const no_attrs[] = { NULL };
1670 struct ldb_result *res;
1671 const char *sam_accountname, *enc_str;
1672 struct ldb_message_element *el;
1673 struct ldb_message *tmp_msg;
1674 int ret;
1675
1676 el = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1677 ac->req->operation);
1678 if (el == NULL) {
1679 /* we are not affected */
1680 return LDB_SUCCESS;
1681 }
1682
1683 /* Create a temporary message for fetching the "sAMAccountName" */
1684 tmp_msg = ldb_msg_new(ac->msg);
1685 if (tmp_msg == NULL) {
1686 return ldb_module_oom(ac->module);
1687 }
1688 ret = ldb_msg_add(tmp_msg, el, 0);
1689 if (ret != LDB_SUCCESS) {
1690 return ret;
1691 }
1692
1693 /* We must not steal the original string, it belongs to the caller! */
1694 sam_accountname = talloc_strdup(ac,
1695 ldb_msg_find_attr_as_string(tmp_msg, "sAMAccountName", NULL));
1696 talloc_free(tmp_msg);
1697
1698 if (sam_accountname == NULL) {
1699 /* The "sAMAccountName" cannot be nothing */
1700 ldb_set_errstring(ldb,
1701 "samldb: Empty account names aren't allowed!");
1702 return LDB_ERR_UNWILLING_TO_PERFORM;
1703 }
1704
1705 enc_str = ldb_binary_encode_string(ac, sam_accountname);
1706 if (enc_str == NULL) {
1707 return ldb_module_oom(ac->module);
1708 }
1709
1710 /* Make sure that a "sAMAccountName" is only used once */
1711
1712 ret = dsdb_module_search(ac->module, ac, &res,
1713 ldb_get_default_basedn(ldb),
1714 LDB_SCOPE_SUBTREE, no_attrs,
1715 DSDB_FLAG_NEXT_MODULE, ac->req,
1716 "(sAMAccountName=%s)", enc_str);
1717 if (ret != LDB_SUCCESS) {
1718 return ret;
1719 }
1720 if (res->count > 1) {
1721 return ldb_operr(ldb);
1722 } else if (res->count == 1) {
1723 if (ldb_dn_compare(res->msgs[0]->dn, ac->msg->dn) != 0) {
1724 ldb_asprintf_errstring(ldb,
1725 "samldb: Account name (sAMAccountName) '%s' already in use!",
1726 sam_accountname);
1727 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1728 }
1729 }
1730 talloc_free(res);
1731
1732 return LDB_SUCCESS;
1733 }
1734
1735 static int samldb_member_check(struct samldb_ctx *ac)
1736 {
1737 const char * const attrs[] = { "objectSid", NULL };
1738 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1739 struct ldb_message_element *el;
1740 struct ldb_dn *member_dn;
1741 struct dom_sid *sid;
1742 struct ldb_result *res;
1743 struct dom_sid *group_sid;
1744 unsigned int i, j;
1745 int ret;
1746
1747 /* Fetch information from the existing object */
1748
1749 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1750 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req, NULL);
1751 if (ret != LDB_SUCCESS) {
1752 return ret;
1753 }
1754 if (res->count != 1) {
1755 return ldb_operr(ldb);
1756 }
1757
1758 group_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
1759 if (group_sid == NULL) {
1760 return ldb_operr(ldb);
1761 }
1762
1763 /* We've to walk over all modification entries and consider the "member"
1764 * ones. */
1765 for (i = 0; i < ac->msg->num_elements; i++) {
1766 if (ldb_attr_cmp(ac->msg->elements[i].name, "member") != 0) {
1767 continue;
1768 }
1769
1770 el = &ac->msg->elements[i];
1771 for (j = 0; j < el->num_values; j++) {
1772 struct ldb_result *group_res;
1773 const char *group_attrs[] = { "primaryGroupID" , NULL };
1774 uint32_t prim_group_rid;
1775
1776 if (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE) {
1777 /* Deletes will be handled in
1778 * repl_meta_data, and deletes not
1779 * matching a member will return
1780 * LDB_ERR_UNWILLING_TO_PERFORM
1781 * there */
1782 continue;
1783 }
1784
1785 member_dn = ldb_dn_from_ldb_val(ac, ldb,
1786 &el->values[j]);
1787 if (!ldb_dn_validate(member_dn)) {
1788 return ldb_operr(ldb);
1789 }
1790
1791 /* Denies to add "member"s to groups which are primary
1792 * ones for them - in this case return
1793 * ERR_ENTRY_ALREADY_EXISTS. */
1794
1795 ret = dsdb_module_search_dn(ac->module, ac, &group_res,
1796 member_dn, group_attrs,
1797 DSDB_FLAG_NEXT_MODULE, ac->req);
1798 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
1799 /* member DN doesn't exist yet */
1800 continue;
1801 }
1802 if (ret != LDB_SUCCESS) {
1803 return ret;
1804 }
1805 prim_group_rid = ldb_msg_find_attr_as_uint(group_res->msgs[0], "primaryGroupID", (uint32_t)-1);
1806 if (prim_group_rid == (uint32_t) -1) {
1807 /* the member hasn't to be a user account ->
1808 * therefore no check needed in this case. */
1809 continue;
1810 }
1811
1812 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1813 prim_group_rid);
1814 if (sid == NULL) {
1815 return ldb_operr(ldb);
1816 }
1817
1818 if (dom_sid_equal(group_sid, sid)) {
1819 ldb_asprintf_errstring(ldb,
1820 "samldb: member %s already set via primaryGroupID %u",
1821 ldb_dn_get_linearized(member_dn), prim_group_rid);
1822 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1823 }
1824 }
1825 }
1826
1827 talloc_free(res);
1828
1829 return LDB_SUCCESS;
1830 }
1831
1832 /* SAM objects have special rules regarding the "description" attribute on
1833 * modify operations. */
1834 static int samldb_description_check(struct samldb_ctx *ac, bool *modified)
1835 {
1836 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1837 const char * const attrs[] = { "objectClass", "description", NULL };
1838 struct ldb_result *res;
1839 unsigned int i;
1840 int ret;
1841
1842 /* Fetch information from the existing object */
1843 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1844 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req,
1845 "(|(objectclass=user)(objectclass=group)(objectclass=samDomain)(objectclass=samServer))");
1846 if (ret != LDB_SUCCESS) {
1847 /* don't treat it specially ... let normal error codes
1848 happen from other places */
1849 ldb_reset_err_string(ldb);
1850 return LDB_SUCCESS;
1851 }
1852 if (res->count == 0) {
1853 /* we didn't match the filter */
1854 talloc_free(res);
1855 return LDB_SUCCESS;
1856 }
1857
1858 /* We've to walk over all modification entries and consider the
1859 * "description" ones. */
1860 for (i = 0; i < ac->msg->num_elements; i++) {
1861 if (ldb_attr_cmp(ac->msg->elements[i].name, "description") == 0) {
1862 ac->msg->elements[i].flags |= LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK;
1863 *modified = true;
1864 }
1865 }
1866
1867 talloc_free(res);
1868
1869 return LDB_SUCCESS;
1870 }
1871
1872 /* This trigger adapts the "servicePrincipalName" attributes if the
1873 * "dNSHostName" and/or "sAMAccountName" attribute change(s) */
1874 static int samldb_service_principal_names_change(struct samldb_ctx *ac)
1875 {
1876 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1877 struct ldb_message_element *el = NULL, *el2 = NULL;
1878 struct ldb_message *msg;
1879 const char * const attrs[] = { "servicePrincipalName", NULL };
1880 struct ldb_result *res;
1881 const char *dns_hostname = NULL, *old_dns_hostname = NULL,
1882 *sam_accountname = NULL, *old_sam_accountname = NULL;
1883 unsigned int i, j;
1884 int ret;
1885
1886 el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName",
1887 ac->req->operation);
1888 el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1889 ac->req->operation);
1890 if ((el == NULL) && (el2 == NULL)) {
1891 /* we are not affected */
1892 return LDB_SUCCESS;
1893 }
1894
1895 /* Create a temporary message for fetching the "dNSHostName" */
1896 if (el != NULL) {
1897 const char *dns_attrs[] = { "dNSHostName", NULL };
1898 msg = ldb_msg_new(ac->msg);
1899 if (msg == NULL) {
1900 return ldb_module_oom(ac->module);
1901 }
1902 ret = ldb_msg_add(msg, el, 0);
1903 if (ret != LDB_SUCCESS) {
1904 return ret;
1905 }
1906 dns_hostname = talloc_strdup(ac,
1907 ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL));
1908 if (dns_hostname == NULL) {
1909 return ldb_module_oom(ac->module);
1910 }
1911
1912 talloc_free(msg);
1913
1914 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn,
1915 dns_attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
1916 if (ret == LDB_SUCCESS) {
1917 old_dns_hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
1918 }
1919 }
1920
1921 /* Create a temporary message for fetching the "sAMAccountName" */
1922 if (el2 != NULL) {
1923 char *tempstr, *tempstr2;
1924 const char *acct_attrs[] = { "sAMAccountName", NULL };
1925
1926 msg = ldb_msg_new(ac->msg);
1927 if (msg == NULL) {
1928 return ldb_module_oom(ac->module);
1929 }
1930 ret = ldb_msg_add(msg, el2, 0);
1931 if (ret != LDB_SUCCESS) {
1932 return ret;
1933 }
1934 tempstr = talloc_strdup(ac,
1935 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
1936 talloc_free(msg);
1937
1938 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, acct_attrs,
1939 DSDB_FLAG_NEXT_MODULE, ac->req);
1940 if (ret == LDB_SUCCESS) {
1941 tempstr2 = talloc_strdup(ac,
1942 ldb_msg_find_attr_as_string(res->msgs[0],
1943 "sAMAccountName", NULL));
1944 }
1945
1946
1947 /* The "sAMAccountName" needs some additional trimming: we need
1948 * to remove the trailing "$"s if they exist. */
1949 if ((tempstr != NULL) && (tempstr[0] != '\0') &&
1950 (tempstr[strlen(tempstr) - 1] == '$')) {
1951 tempstr[strlen(tempstr) - 1] = '\0';
1952 }
1953 if ((tempstr2 != NULL) && (tempstr2[0] != '\0') &&
1954 (tempstr2[strlen(tempstr2) - 1] == '$')) {
1955 tempstr2[strlen(tempstr2) - 1] = '\0';
1956 }
1957 sam_accountname = tempstr;
1958 old_sam_accountname = tempstr2;
1959 }
1960
1961 if (old_dns_hostname == NULL) {
1962 /* we cannot change when the old name is unknown */
1963 dns_hostname = NULL;
1964 }
1965 if ((old_dns_hostname != NULL) && (dns_hostname != NULL) &&
1966 (strcasecmp_m(old_dns_hostname, dns_hostname) == 0)) {
1967 /* The "dNSHostName" didn't change */
1968 dns_hostname = NULL;
1969 }
1970
1971 if (old_sam_accountname == NULL) {
1972 /* we cannot change when the old name is unknown */
1973 sam_accountname = NULL;
1974 }
1975 if ((old_sam_accountname != NULL) && (sam_accountname != NULL) &&
1976 (strcasecmp_m(old_sam_accountname, sam_accountname) == 0)) {
1977 /* The "sAMAccountName" didn't change */
1978 sam_accountname = NULL;
1979 }
1980
1981 if ((dns_hostname == NULL) && (sam_accountname == NULL)) {
1982 /* Well, there are information missing (old name(s)) or the
1983 * names didn't change. We've nothing to do and can exit here */
1984 return LDB_SUCCESS;
1985 }
1986
1987 /* Potential "servicePrincipalName" changes in the same request have to
1988 * be handled before the update (Windows behaviour). */
1989 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
1990 if (el != NULL) {
1991 msg = ldb_msg_new(ac->msg);
1992 if (msg == NULL) {
1993 return ldb_module_oom(ac->module);
1994 }
1995 msg->dn = ac->msg->dn;
1996
1997 do {
1998 ret = ldb_msg_add(msg, el, el->flags);
1999 if (ret != LDB_SUCCESS) {
2000 return ret;
2001 }
2002
2003 ldb_msg_remove_element(ac->msg, el);
2004
2005 el = ldb_msg_find_element(ac->msg,
2006 "servicePrincipalName");
2007 } while (el != NULL);
2008
2009 ret = dsdb_module_modify(ac->module, msg,
2010 DSDB_FLAG_NEXT_MODULE, ac->req);
2011 if (ret != LDB_SUCCESS) {
2012 return ret;
2013 }
2014 talloc_free(msg);
2015 }
2016
2017 /* Fetch the "servicePrincipalName"s if any */
2018 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
2019 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
2020 if (ret != LDB_SUCCESS) {
2021 return ret;
2022 }
2023 if ((res->count != 1) || (res->msgs[0]->num_elements > 1)) {
2024 return ldb_operr(ldb);
2025 }
2026
2027 if (res->msgs[0]->num_elements == 1) {
2028 /*
2029 * Yes, we do have "servicePrincipalName"s. First we update them
2030 * locally, that means we do always substitute the current
2031 * "dNSHostName" with the new one and/or "sAMAccountName"
2032 * without "$" with the new one and then we append the
2033 * modified "servicePrincipalName"s as a message element
2034 * replace to the modification request (Windows behaviour). We
2035 * need also to make sure that the values remain case-
2036 * insensitively unique.
2037 */
2038
2039 ret = ldb_msg_add_empty(ac->msg, "servicePrincipalName",
2040 LDB_FLAG_MOD_REPLACE, &el);
2041 if (ret != LDB_SUCCESS) {
2042 return ret;
2043 }
2044
2045 for (i = 0; i < res->msgs[0]->elements[0].num_values; i++) {
2046 char *old_str, *new_str, *pos;
2047 const char *tok;
2048 struct ldb_val *vals;
2049 bool found = false;
2050
2051 old_str = (char *)
2052 res->msgs[0]->elements[0].values[i].data;
2053
2054 new_str = talloc_strdup(ac->msg,
2055 strtok_r(old_str, "/", &pos));
2056 if (new_str == NULL) {
2057 return ldb_module_oom(ac->module);
2058 }
2059
2060 while ((tok = strtok_r(NULL, "/", &pos)) != NULL) {
2061 if ((dns_hostname != NULL) &&
2062 (strcasecmp_m(tok, old_dns_hostname) == 0)) {
2063 tok = dns_hostname;
2064 }
2065 if ((sam_accountname != NULL) &&
2066 (strcasecmp_m(tok, old_sam_accountname) == 0)) {
2067 tok = sam_accountname;
2068 }
2069
2070 new_str = talloc_asprintf(ac->msg, "%s/%s",
2071 new_str, tok);
2072 if (new_str == NULL) {
2073 return ldb_module_oom(ac->module);
2074 }
2075 }
2076
2077 /* Uniqueness check */
2078 for (j = 0; (!found) && (j < el->num_values); j++) {
2079 if (strcasecmp_m((char *)el->values[j].data,
2080 new_str) == 0) {
2081 found = true;
2082 }
2083 }
2084 if (found) {
2085 continue;
2086 }
2087
2088 /*
2089 * append the new "servicePrincipalName" -
2090 * code derived from ldb_msg_add_value().
2091 *
2092 * Open coded to make it clear that we must
2093 * append to the MOD_REPLACE el created above.
2094 */
2095 vals = talloc_realloc(ac->msg, el->values,
2096 struct ldb_val,
2097 el->num_values + 1);
2098 if (vals == NULL) {
2099 return ldb_module_oom(ac->module);
2100 }
2101 el->values = vals;
2102 el->values[el->num_values] = data_blob_string_const(new_str);
2103 ++(el->num_values);
2104 }
2105 }
2106
2107 talloc_free(res);
2108
2109 return LDB_SUCCESS;
2110 }
2111
2112 /* This checks the "fSMORoleOwner" attributes */
2113 static int samldb_fsmo_role_owner_check(struct samldb_ctx *ac)
2114 {
2115 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
2116 const char * const no_attrs[] = { NULL };
2117 struct ldb_message_element *el;
2118 struct ldb_message *tmp_msg;
2119 struct ldb_dn *res_dn;
2120 struct ldb_result *res;
2121 int ret;
2122
2123 el = dsdb_get_single_valued_attr(ac->msg, "fSMORoleOwner",
2124 ac->req->operation);
2125 if (el == NULL) {
2126 /* we are not affected */
2127 return LDB_SUCCESS;
2128 }
2129
2130 /* Create a temporary message for fetching the "fSMORoleOwner" */
2131 tmp_msg = ldb_msg_new(ac->msg);
2132 if (tmp_msg == NULL) {
2133 return ldb_module_oom(ac->module);
2134 }
2135 ret = ldb_msg_add(tmp_msg, el, 0);
2136 if (ret != LDB_SUCCESS) {
2137 return ret;
2138 }
2139 res_dn = ldb_msg_find_attr_as_dn(ldb, ac, tmp_msg, "fSMORoleOwner");
2140 talloc_free(tmp_msg);
2141
2142 if (res_dn == NULL) {
2143 ldb_set_errstring(ldb,
2144 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2145 if (ac->req->operation == LDB_ADD) {
2146 return LDB_ERR_CONSTRAINT_VIOLATION;
2147 } else {
2148 return LDB_ERR_UNWILLING_TO_PERFORM;
2149 }
2150 }
2151
2152 /* Fetched DN has to reference a "nTDSDSA" entry */
2153 ret = dsdb_module_search(ac->module, ac, &res, res_dn, LDB_SCOPE_BASE,
2154 no_attrs,
2155 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2156 ac->req, "(objectClass=nTDSDSA)");
2157 if (ret != LDB_SUCCESS) {
2158 return ret;
2159 }
2160 if (res->count != 1) {
2161 ldb_set_errstring(ldb,
2162 "samldb: 'fSMORoleOwner' attributes have to reference 'nTDSDSA' entries!");
2163 return LDB_ERR_UNWILLING_TO_PERFORM;
2164 }
2165
2166 talloc_free(res);
2167
2168 return LDB_SUCCESS;
2169 }
2170
2171
2172 /* add */
2173 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
2174 {
2175 struct ldb_context *ldb;
2176 struct samldb_ctx *ac;
2177 struct ldb_message_element *el;
2178 int ret;
2179
2180 ldb = ldb_module_get_ctx(module);
2181 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
2182
2183 /* do not manipulate our control entries */
2184 if (ldb_dn_is_special(req->op.add.message->dn)) {
2185 return ldb_next_request(module, req);
2186 }
2187
2188 ac = samldb_ctx_init(module, req);
2189 if (ac == NULL) {
2190 return ldb_operr(ldb);
2191 }
2192
2193 /* build the new msg */
2194 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
2195 if (ac->msg == NULL) {
2196 talloc_free(ac);
2197 ldb_debug(ldb, LDB_DEBUG_FATAL,
2198 "samldb_add: ldb_msg_copy_shallow failed!\n");
2199 return ldb_operr(ldb);
2200 }
2201
2202 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2203 if (el != NULL) {
2204 ret = samldb_fsmo_role_owner_check(ac);
2205 if (ret != LDB_SUCCESS) {
2206 return ret;
2207 }
2208 }
2209
2210 if (samdb_find_attribute(ldb, ac->msg,
2211 "objectclass", "user") != NULL) {
2212 ac->type = SAMLDB_TYPE_USER;
2213
2214 ret = samldb_prim_group_trigger(ac);
2215 if (ret != LDB_SUCCESS) {
2216 return ret;
2217 }
2218
2219 ret = samldb_objectclass_trigger(ac);
2220 if (ret != LDB_SUCCESS) {
2221 return ret;
2222 }
2223
2224 return samldb_fill_object(ac);
2225 }
2226
2227 if (samdb_find_attribute(ldb, ac->msg,
2228 "objectclass", "group") != NULL) {
2229 ac->type = SAMLDB_TYPE_GROUP;
2230
2231 ret = samldb_objectclass_trigger(ac);
2232 if (ret != LDB_SUCCESS) {
2233 return ret;
2234 }
2235
2236 return samldb_fill_object(ac);
2237 }
2238
2239 /* perhaps a foreignSecurityPrincipal? */
2240 if (samdb_find_attribute(ldb, ac->msg,
2241 "objectclass",
2242 "foreignSecurityPrincipal") != NULL) {
2243 return samldb_fill_foreignSecurityPrincipal_object(ac);
2244 }
2245
2246 if (samdb_find_attribute(ldb, ac->msg,
2247 "objectclass", "classSchema") != NULL) {
2248 ret = samldb_schema_info_update(ac);
2249 if (ret != LDB_SUCCESS) {
2250 talloc_free(ac);
2251 return ret;
2252 }
2253
2254 ac->type = SAMLDB_TYPE_CLASS;
2255 return samldb_fill_object(ac);
2256 }
2257
2258 if (samdb_find_attribute(ldb, ac->msg,
2259 "objectclass", "attributeSchema") != NULL) {
2260 ret = samldb_schema_info_update(ac);
2261 if (ret != LDB_SUCCESS) {
2262 talloc_free(ac);
2263 return ret;
2264 }
2265
2266 ac->type = SAMLDB_TYPE_ATTRIBUTE;
2267 return samldb_fill_object(ac);
2268 }
2269
2270 talloc_free(ac);
2271
2272 /* nothing matched, go on */
2273 return ldb_next_request(module, req);
2274 }
2275
2276 /* modify */
2277 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
2278 {
2279 struct ldb_context *ldb;
2280 struct samldb_ctx *ac;
2281 struct ldb_message_element *el, *el2;
2282 bool modified = false;
2283 int ret;
2284
2285 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2286 /* do not manipulate our control entries */
2287 return ldb_next_request(module, req);
2288 }
2289
2290 ldb = ldb_module_get_ctx(module);
2291
2292 /* make sure that "objectSid" is not specified */
2293 el = ldb_msg_find_element(req->op.mod.message, "objectSid");
2294 if (el != NULL) {
2295 if (ldb_request_get_control(req, LDB_CONTROL_PROVISION_OID) == NULL) {
2296 ldb_set_errstring(ldb,
2297 "samldb: objectSid must not be specified!");
2298 return LDB_ERR_UNWILLING_TO_PERFORM;
2299 }
2300 }
2301 /* make sure that "sAMAccountType" is not specified */
2302 el = ldb_msg_find_element(req->op.mod.message, "sAMAccountType");
2303 if (el != NULL) {
2304 ldb_set_errstring(ldb,
2305 "samldb: sAMAccountType must not be specified!");
2306 return LDB_ERR_UNWILLING_TO_PERFORM;
2307 }
2308 /* make sure that "isCriticalSystemObject" is not specified */
2309 el = ldb_msg_find_element(req->op.mod.message, "isCriticalSystemObject");
2310 if (el != NULL) {
2311 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) == NULL) {
2312 ldb_set_errstring(ldb,
2313 "samldb: isCriticalSystemObject must not be specified!");
2314 return LDB_ERR_UNWILLING_TO_PERFORM;
2315 }
2316 }
2317
2318 /* msDS-IntId is not allowed to be modified
2319 * except when modification comes from replication */
2320 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
2321 if (!ldb_request_get_control(req,
2322 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
2323 return LDB_ERR_CONSTRAINT_VIOLATION;
2324 }
2325 }
2326
2327 ac = samldb_ctx_init(module, req);
2328 if (ac == NULL) {
2329 return ldb_operr(ldb);
2330 }
2331
2332 /* build the new msg */
2333 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2334 if (ac->msg == NULL) {
2335 talloc_free(ac);
2336 ldb_debug(ldb, LDB_DEBUG_FATAL,
2337 "samldb_modify: ldb_msg_copy_shallow failed!\n");
2338 return ldb_operr(ldb);
2339 }
2340
2341 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
2342 if (el != NULL) {
2343 ret = samldb_prim_group_trigger(ac);
2344 if (ret != LDB_SUCCESS) {
2345 return ret;
2346 }
2347 }
2348
2349 el = ldb_msg_find_element(ac->msg, "userAccountControl");
2350 if (el != NULL) {
2351 modified = true;
2352 ret = samldb_user_account_control_change(ac);
2353 if (ret != LDB_SUCCESS) {
2354 return ret;
2355 }
2356 }
2357
2358 el = ldb_msg_find_element(ac->msg, "groupType");
2359 if (el != NULL) {
2360 modified = true;
2361 ret = samldb_group_type_change(ac);
2362 if (ret != LDB_SUCCESS) {
2363 return ret;
2364 }
2365 }
2366
2367 el = ldb_msg_find_element(ac->msg, "sAMAccountName");
2368 if (el != NULL) {
2369 ret = samldb_sam_accountname_check(ac);
2370 if (ret != LDB_SUCCESS) {
2371 return ret;
2372 }
2373 }
2374
2375 el = ldb_msg_find_element(ac->msg, "member");
2376 if (el != NULL) {
2377 ret = samldb_member_check(ac);
2378 if (ret != LDB_SUCCESS) {
2379 return ret;
2380 }
2381 }
2382
2383 el = ldb_msg_find_element(ac->msg, "description");
2384 if (el != NULL) {
2385 ret = samldb_description_check(ac, &modified);
2386 if (ret != LDB_SUCCESS) {
2387 return ret;
2388 }
2389 }
2390
2391 el = ldb_msg_find_element(ac->msg, "dNSHostName");
2392 el2 = ldb_msg_find_element(ac->msg, "sAMAccountName");
2393 if ((el != NULL) || (el2 != NULL)) {
2394 modified = true;
2395 ret = samldb_service_principal_names_change(ac);
2396 if (ret != LDB_SUCCESS) {
2397 return ret;
2398 }
2399 }
2400
2401 el = ldb_msg_find_element(ac->msg, "fSMORoleOwner");
2402 if (el != NULL) {
2403 ret = samldb_fsmo_role_owner_check(ac);
2404 if (ret != LDB_SUCCESS) {
2405 return ret;
2406 }
2407 }
2408
2409 if (modified) {
2410 struct ldb_request *child_req;
2411
2412 /* Now perform the real modifications as a child request */
2413 ret = ldb_build_mod_req(&child_req, ldb, ac,
2414 ac->msg,
2415 req->controls,
2416 req, dsdb_next_callback,
2417 req);
2418 LDB_REQ_SET_LOCATION(child_req);
2419 if (ret != LDB_SUCCESS) {
2420 return ret;
2421 }
2422
2423 return ldb_next_request(module, child_req);
2424 }
2425
2426 talloc_free(ac);
2427
2428 /* no change which interests us, go on */
2429 return ldb_next_request(module, req);
2430 }
2431
2432 /* delete */
2433
2434 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
2435 {
2436 struct ldb_context *ldb;
2437 struct dom_sid *sid;
2438 uint32_t rid;
2439 NTSTATUS status;
2440 int ret;
2441 struct ldb_result *res;
2442 const char * const attrs[] = { "objectSid", "isDeleted", NULL };
2443 const char * const noattrs[] = { NULL };
2444
2445 ldb = ldb_module_get_ctx(ac->module);
2446
2447 /* Finds out the SID/RID of the SAM object */
2448 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->req->op.del.dn,
2449 attrs,
2450 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED,
2451 ac->req);
2452 if (ret != LDB_SUCCESS) {
2453 return ret;
2454 }
2455
2456 if (ldb_msg_check_string_attribute(res->msgs[0], "isDeleted", "TRUE")) {
2457 return LDB_SUCCESS;
2458 }
2459
2460 sid = samdb_result_dom_sid(ac, res->msgs[0], "objectSid");
2461 if (sid == NULL) {
2462 /* No SID - it might not be a SAM object - therefore ok */
2463 return LDB_SUCCESS;
2464 }
2465 status = dom_sid_split_rid(ac, sid, NULL, &rid);
2466 if (!NT_STATUS_IS_OK(status)) {
2467 return ldb_operr(ldb);
2468 }
2469 if (rid == 0) {
2470 /* Special object (security principal?) */
2471 return LDB_SUCCESS;
2472 }
2473
2474 /* Deny delete requests from groups which are primary ones */
2475 ret = dsdb_module_search(ac->module, ac, &res,
2476 ldb_get_default_basedn(ldb),
2477 LDB_SCOPE_SUBTREE, noattrs,
2478 DSDB_FLAG_NEXT_MODULE,
2479 ac->req,
2480 "(&(primaryGroupID=%u)(objectClass=user))", rid);
2481 if (ret != LDB_SUCCESS) {
2482 return ret;
2483 }
2484 if (res->count > 0) {
2485 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2486 }
2487
2488 return LDB_SUCCESS;
2489 }
2490
2491 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
2492 {
2493 struct samldb_ctx *ac;
2494 int ret;
2495
2496 if (ldb_dn_is_special(req->op.del.dn)) {
2497 /* do not manipulate our control entries */
2498 return ldb_next_request(module, req);
2499 }
2500
2501 ac = samldb_ctx_init(module, req);
2502 if (ac == NULL) {
2503 return ldb_operr(ldb_module_get_ctx(module));
2504 }
2505
2506 ret = samldb_prim_group_users_check(ac);
2507 if (ret != LDB_SUCCESS) {
2508 return ret;
2509 }
2510
2511 talloc_free(ac);
2512
2513 return ldb_next_request(module, req);
2514 }
2515
2516 /* extended */
2517
2518 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
2519 {
2520 struct ldb_context *ldb = ldb_module_get_ctx(module);
2521 struct dsdb_fsmo_extended_op *exop;
2522 int ret;
2523
2524 exop = talloc_get_type(req->op.extended.data,
2525 struct dsdb_fsmo_extended_op);
2526 if (!exop) {
2527 ldb_set_errstring(ldb,
2528 "samldb_extended_allocate_rid_pool: invalid extended data");
2529 return LDB_ERR_PROTOCOL_ERROR;
2530 }
2531
2532 ret = ridalloc_allocate_rid_pool_fsmo(module, exop, req);
2533 if (ret != LDB_SUCCESS) {
2534 return ret;
2535 }
2536
2537 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
2538 }
2539
2540 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
2541 {
2542 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
2543 return samldb_extended_allocate_rid_pool(module, req);
2544 }
2545
2546 return ldb_next_request(module, req);
2547 }
2548
2549
2550 static const struct ldb_module_ops ldb_samldb_module_ops = {
2551 .name = "samldb",
2552 .add = samldb_add,
2553 .modify = samldb_modify,
2554 .del = samldb_delete,
2555 .extended = samldb_extended
2556 };
2557
2558
2559 int ldb_samldb_module_init(const char *version)
2560 {
2561 LDB_MODULE_CHECK_VERSION(version);
2562 return ldb_register_module(&ldb_samldb_module_ops);
2563 }
stuff from bjacke