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Transform the sequence_number operation into a normal extended operation as it should...
[Samba.git] / source4 / dsdb / samdb / ldb_modules / partition.c
blobb4a7a47a232d8edf8559188b73cce066762dd326
1 /*
2 Partitions ldb module
3
4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
5 Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
6
7 * NOTICE: this module is NOT released under the GNU LGPL license as
8 * other ldb code. This module is release under the GNU GPL v3 or
9 * later license.
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 */
24
25 /*
26 * Name: ldb
27 *
28 * Component: ldb partitions module
29 *
30 * Description: Implement LDAP partitions
31 *
32 * Author: Andrew Bartlett
33 * Author: Stefan Metzmacher
34 */
35
36 #include "includes.h"
37 #include "ldb/include/ldb_includes.h"
38 #include "dsdb/samdb/samdb.h"
39
40 struct partition_private_data {
41 struct dsdb_control_current_partition **partitions;
42 struct ldb_dn **replicate;
43 };
44
45 struct part_request {
46 struct ldb_module *module;
47 struct ldb_request *req;
48 };
49
50 struct partition_context {
51 struct ldb_module *module;
52 struct ldb_request *req;
53 bool got_success;
54
55 struct part_request *part_req;
56 int num_requests;
57 int finished_requests;
58 };
59
60 static struct partition_context *partition_init_ctx(struct ldb_module *module, struct ldb_request *req)
61 {
62 struct partition_context *ac;
63
64 ac = talloc_zero(req, struct partition_context);
65 if (ac == NULL) {
66 ldb_set_errstring(module->ldb, "Out of Memory");
67 return NULL;
68 }
69
70 ac->module = module;
71 ac->req = req;
72
73 return ac;
74 }
75
76 #define PARTITION_FIND_OP(module, op) do { \
77 struct ldb_context *ldbctx = module->ldb; \
78 while (module && module->ops->op == NULL) module = module->next; \
79 if (module == NULL) { \
80 ldb_asprintf_errstring(ldbctx, \
81 "Unable to find backend operation for " #op ); \
82 return LDB_ERR_OPERATIONS_ERROR; \
83 } \
84 } while (0)
85
86 /*
87 * helper functions to call the next module in chain
88 * */
89
90 int partition_request(struct ldb_module *module, struct ldb_request *request)
91 {
92 int ret;
93 switch (request->operation) {
94 case LDB_SEARCH:
95 PARTITION_FIND_OP(module, search);
96 ret = module->ops->search(module, request);
97 break;
98 case LDB_ADD:
99 PARTITION_FIND_OP(module, add);
100 ret = module->ops->add(module, request);
101 break;
102 case LDB_MODIFY:
103 PARTITION_FIND_OP(module, modify);
104 ret = module->ops->modify(module, request);
105 break;
106 case LDB_DELETE:
107 PARTITION_FIND_OP(module, del);
108 ret = module->ops->del(module, request);
109 break;
110 case LDB_RENAME:
111 PARTITION_FIND_OP(module, rename);
112 ret = module->ops->rename(module, request);
113 break;
114 case LDB_EXTENDED:
115 PARTITION_FIND_OP(module, extended);
116 ret = module->ops->extended(module, request);
117 break;
118 default:
119 PARTITION_FIND_OP(module, request);
120 ret = module->ops->request(module, request);
121 break;
122 }
123 if (ret == LDB_SUCCESS) {
124 return ret;
125 }
126 if (!ldb_errstring(module->ldb)) {
127 /* Set a default error string, to place the blame somewhere */
128 ldb_asprintf_errstring(module->ldb,
129 "error in module %s: %s (%d)",
130 module->ops->name,
131 ldb_strerror(ret), ret);
132 }
133 return ret;
134 }
135
136 static struct dsdb_control_current_partition *find_partition(struct partition_private_data *data,
137 struct ldb_dn *dn)
138 {
139 int i;
140
141 /* Look at base DN */
142 /* Figure out which partition it is under */
143 /* Skip the lot if 'data' isn't here yet (initialistion) */
144 for (i=0; data && data->partitions && data->partitions[i]; i++) {
145 if (ldb_dn_compare_base(data->partitions[i]->dn, dn) == 0) {
146 return data->partitions[i];
147 }
148 }
149
150 return NULL;
151 };
152
153 /**
154 * fire the caller's callback for every entry, but only send 'done' once.
155 */
156 static int partition_req_callback(struct ldb_request *req,
157 struct ldb_reply *ares)
158 {
159 struct partition_context *ac;
160 struct ldb_module *module;
161 struct ldb_request *nreq;
162 int ret;
163
164 ac = talloc_get_type(req->context, struct partition_context);
165
166 if (!ares) {
167 return ldb_module_done(ac->req, NULL, NULL,
168 LDB_ERR_OPERATIONS_ERROR);
169 }
170
171 if (ares->error != LDB_SUCCESS && !ac->got_success) {
172 return ldb_module_done(ac->req, ares->controls,
173 ares->response, ares->error);
174 }
175
176 switch (ares->type) {
177 case LDB_REPLY_REFERRAL:
178 /* ignore referrals for now */
179 break;
180
181 case LDB_REPLY_ENTRY:
182 if (ac->req->operation != LDB_SEARCH) {
183 ldb_set_errstring(ac->module->ldb,
184 "partition_req_callback:"
185 " Unsupported reply type for this request");
186 return ldb_module_done(ac->req, NULL, NULL,
187 LDB_ERR_OPERATIONS_ERROR);
188 }
189 return ldb_module_send_entry(ac->req, ares->message);
190
191 case LDB_REPLY_DONE:
192 if (ares->error == LDB_SUCCESS) {
193 ac->got_success = true;
194 }
195 if (ac->req->operation == LDB_EXTENDED) {
196 /* FIXME: check for ares->response, replmd does not fill it ! */
197 if (ares->response) {
198 if (strcmp(ares->response->oid, LDB_EXTENDED_START_TLS_OID) != 0) {
199 ldb_set_errstring(ac->module->ldb,
200 "partition_req_callback:"
201 " Unknown extended reply, "
202 "only supports START_TLS");
203 talloc_free(ares);
204 return ldb_module_done(ac->req, NULL, NULL,
205 LDB_ERR_OPERATIONS_ERROR);
206 }
207 }
208 }
209
210 ac->finished_requests++;
211 if (ac->finished_requests == ac->num_requests) {
212 /* this was the last one, call callback */
213 return ldb_module_done(ac->req, ares->controls,
214 ares->response,
215 ac->got_success?LDB_SUCCESS:ares->error);
216 }
217
218 /* not the last, now call the next one */
219 module = ac->part_req[ac->finished_requests].module;
220 nreq = ac->part_req[ac->finished_requests].req;
221
222 ret = partition_request(module, nreq);
223 if (ret != LDB_SUCCESS) {
224 talloc_free(ares);
225 return ldb_module_done(ac->req, NULL, NULL, ret);
226 }
227
228 break;
229 }
230
231 talloc_free(ares);
232 return LDB_SUCCESS;
233 }
234
235 static int partition_prep_request(struct partition_context *ac,
236 struct dsdb_control_current_partition *partition)
237 {
238 int ret;
239 struct ldb_request *req;
240
241 ac->part_req = talloc_realloc(ac, ac->part_req,
242 struct part_request,
243 ac->num_requests + 1);
244 if (ac->part_req == NULL) {
245 ldb_oom(ac->module->ldb);
246 return LDB_ERR_OPERATIONS_ERROR;
247 }
248
249 switch (ac->req->operation) {
250 case LDB_SEARCH:
251 ret = ldb_build_search_req_ex(&req, ac->module->ldb,
252 ac->part_req,
253 ac->req->op.search.base,
254 ac->req->op.search.scope,
255 ac->req->op.search.tree,
256 ac->req->op.search.attrs,
257 ac->req->controls,
258 ac, partition_req_callback,
259 ac->req);
260 break;
261 case LDB_ADD:
262 ret = ldb_build_add_req(&req, ac->module->ldb, ac->part_req,
263 ac->req->op.add.message,
264 ac->req->controls,
265 ac, partition_req_callback,
266 ac->req);
267 break;
268 case LDB_MODIFY:
269 ret = ldb_build_mod_req(&req, ac->module->ldb, ac->part_req,
270 ac->req->op.mod.message,
271 ac->req->controls,
272 ac, partition_req_callback,
273 ac->req);
274 break;
275 case LDB_DELETE:
276 ret = ldb_build_del_req(&req, ac->module->ldb, ac->part_req,
277 ac->req->op.del.dn,
278 ac->req->controls,
279 ac, partition_req_callback,
280 ac->req);
281 break;
282 case LDB_RENAME:
283 ret = ldb_build_rename_req(&req, ac->module->ldb, ac->part_req,
284 ac->req->op.rename.olddn,
285 ac->req->op.rename.newdn,
286 ac->req->controls,
287 ac, partition_req_callback,
288 ac->req);
289 break;
290 case LDB_EXTENDED:
291 ret = ldb_build_extended_req(&req, ac->module->ldb,
292 ac->part_req,
293 ac->req->op.extended.oid,
294 ac->req->op.extended.data,
295 ac->req->controls,
296 ac, partition_req_callback,
297 ac->req);
298 break;
299 default:
300 ldb_set_errstring(ac->module->ldb,
301 "Unsupported request type!");
302 ret = LDB_ERR_UNWILLING_TO_PERFORM;
303 }
304
305 if (ret != LDB_SUCCESS) {
306 return ret;
307 }
308
309 ac->part_req[ac->num_requests].req = req;
310
311 if (ac->req->controls) {
312 req->controls = talloc_memdup(req, ac->req->controls,
313 talloc_get_size(ac->req->controls));
314 if (req->controls == NULL) {
315 ldb_oom(ac->module->ldb);
316 return LDB_ERR_OPERATIONS_ERROR;
317 }
318 }
319
320 if (partition) {
321 ac->part_req[ac->num_requests].module = partition->module;
322
323 ret = ldb_request_add_control(req,
324 DSDB_CONTROL_CURRENT_PARTITION_OID,
325 false, partition);
326 if (ret != LDB_SUCCESS) {
327 return ret;
328 }
329
330 if (req->operation == LDB_SEARCH) {
331 /* If the search is for 'more' than this partition,
332 * then change the basedn, so a remote LDAP server
333 * doesn't object */
334 if (ldb_dn_compare_base(partition->dn,
335 req->op.search.base) != 0) {
336 req->op.search.base = partition->dn;
337 }
338 }
339
340 } else {
341 /* make sure you put the NEXT module here, or
342 * partition_request() will simply loop forever on itself */
343 ac->part_req[ac->num_requests].module = ac->module->next;
344 }
345
346 ac->num_requests++;
347
348 return LDB_SUCCESS;
349 }
350
351 static int partition_call_first(struct partition_context *ac)
352 {
353 return partition_request(ac->part_req[0].module, ac->part_req[0].req);
354 }
355
356 /**
357 * Send a request down to all the partitions
358 */
359 static int partition_send_all(struct ldb_module *module,
360 struct partition_context *ac,
361 struct ldb_request *req)
362 {
363 int i;
364 struct partition_private_data *data = talloc_get_type(module->private_data,
365 struct partition_private_data);
366 int ret = partition_prep_request(ac, NULL);
367 if (ret != LDB_SUCCESS) {
368 return ret;
369 }
370 for (i=0; data && data->partitions && data->partitions[i]; i++) {
371 ret = partition_prep_request(ac, data->partitions[i]);
372 if (ret != LDB_SUCCESS) {
373 return ret;
374 }
375 }
376
377 /* fire the first one */
378 return partition_call_first(ac);
379 }
380
381 /**
382 * Figure out which backend a request needs to be aimed at. Some
383 * requests must be replicated to all backends
384 */
385 static int partition_replicate(struct ldb_module *module, struct ldb_request *req, struct ldb_dn *dn)
386 {
387 struct partition_context *ac;
388 unsigned i;
389 int ret;
390 struct dsdb_control_current_partition *partition;
391 struct partition_private_data *data = talloc_get_type(module->private_data,
392 struct partition_private_data);
393 if (!data || !data->partitions) {
394 return ldb_next_request(module, req);
395 }
396
397 if (req->operation != LDB_SEARCH) {
398 /* Is this a special DN, we need to replicate to every backend? */
399 for (i=0; data->replicate && data->replicate[i]; i++) {
400 if (ldb_dn_compare(data->replicate[i],
401 dn) == 0) {
402
403 ac = partition_init_ctx(module, req);
404 if (!ac) {
405 return LDB_ERR_OPERATIONS_ERROR;
406 }
407
408 return partition_send_all(module, ac, req);
409 }
410 }
411 }
412
413 /* Otherwise, we need to find the partition to fire it to */
414
415 /* Find partition */
416 partition = find_partition(data, dn);
417 if (!partition) {
418 /*
419 * if we haven't found a matching partition
420 * pass the request to the main ldb
421 *
422 * TODO: we should maybe return an error here
423 * if it's not a special dn
424 */
425
426 return ldb_next_request(module, req);
427 }
428
429 ac = partition_init_ctx(module, req);
430 if (!ac) {
431 return LDB_ERR_OPERATIONS_ERROR;
432 }
433
434 /* we need to add a control but we never touch the original request */
435 ret = partition_prep_request(ac, partition);
436 if (ret != LDB_SUCCESS) {
437 return ret;
438 }
439
440 /* fire the first one */
441 return partition_call_first(ac);
442 }
443
444 /* search */
445 static int partition_search(struct ldb_module *module, struct ldb_request *req)
446 {
447 struct ldb_control **saved_controls;
448
449 /* Find backend */
450 struct partition_private_data *data = talloc_get_type(module->private_data,
451 struct partition_private_data);
452 /* issue request */
453
454 /* (later) consider if we should be searching multiple
455 * partitions (for 'invisible' partition behaviour */
456
457 struct ldb_control *search_control = ldb_request_get_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID);
458 struct ldb_control *domain_scope_control = ldb_request_get_control(req, LDB_CONTROL_DOMAIN_SCOPE_OID);
459
460 struct ldb_search_options_control *search_options = NULL;
461 if (search_control) {
462 search_options = talloc_get_type(search_control->data, struct ldb_search_options_control);
463 }
464
465 /* Remove the domain_scope control, so we don't confuse a backend server */
466 if (domain_scope_control && !save_controls(domain_scope_control, req, &saved_controls)) {
467 ldb_oom(module->ldb);
468 return LDB_ERR_OPERATIONS_ERROR;
469 }
470
471 /*
472 * for now pass down the LDB_CONTROL_SEARCH_OPTIONS_OID control
473 * down as uncritical to make windows 2008 dcpromo happy.
474 */
475 if (search_control) {
476 search_control->critical = 0;
477 }
478
479 /* TODO:
480 Generate referrals (look for a partition under this DN) if we don't have the above control specified
481 */
482
483 if (search_options && (search_options->search_options & LDB_SEARCH_OPTION_PHANTOM_ROOT)) {
484 int ret, i;
485 struct partition_context *ac;
486 if ((search_options->search_options & ~LDB_SEARCH_OPTION_PHANTOM_ROOT) == 0) {
487 /* We have processed this flag, so we are done with this control now */
488
489 /* Remove search control, so we don't confuse a backend server */
490 if (search_control && !save_controls(search_control, req, &saved_controls)) {
491 ldb_oom(module->ldb);
492 return LDB_ERR_OPERATIONS_ERROR;
493 }
494 }
495 ac = partition_init_ctx(module, req);
496 if (!ac) {
497 return LDB_ERR_OPERATIONS_ERROR;
498 }
499
500 /* Search from the base DN */
501 if (!req->op.search.base || ldb_dn_is_null(req->op.search.base)) {
502 return partition_send_all(module, ac, req);
503 }
504 for (i=0; data && data->partitions && data->partitions[i]; i++) {
505 bool match = false, stop = false;
506 /* Find all partitions under the search base
507
508 we match if:
509
510 1) the DN we are looking for exactly matches the partition
511 or
512 2) the DN we are looking for is a parent of the partition and it isn't
513 a scope base search
514 or
515 3) the DN we are looking for is a child of the partition
516 */
517 if (ldb_dn_compare(data->partitions[i]->dn, req->op.search.base) == 0) {
518 match = true;
519 if (req->op.search.scope == LDB_SCOPE_BASE) {
520 stop = true;
521 }
522 }
523 if (!match &&
524 (ldb_dn_compare_base(req->op.search.base, data->partitions[i]->dn) == 0 &&
525 req->op.search.scope != LDB_SCOPE_BASE)) {
526 match = true;
527 }
528 if (!match &&
529 ldb_dn_compare_base(data->partitions[i]->dn, req->op.search.base) == 0) {
530 match = true;
531 stop = true; /* note that this relies on partition ordering */
532 }
533 if (match) {
534 ret = partition_prep_request(ac, data->partitions[i]);
535 if (ret != LDB_SUCCESS) {
536 return ret;
537 }
538 }
539 if (stop) break;
540 }
541
542 /* Perhaps we didn't match any partitions. Try the main partition, only */
543 if (ac->num_requests == 0) {
544 talloc_free(ac);
545 return ldb_next_request(module, req);
546 }
547
548 /* fire the first one */
549 return partition_call_first(ac);
550
551 } else {
552 /* Handle this like all other requests */
553 if (search_control && (search_options->search_options & ~LDB_SEARCH_OPTION_PHANTOM_ROOT) == 0) {
554 /* We have processed this flag, so we are done with this control now */
555
556 /* Remove search control, so we don't confuse a backend server */
557 if (search_control && !save_controls(search_control, req, &saved_controls)) {
558 ldb_oom(module->ldb);
559 return LDB_ERR_OPERATIONS_ERROR;
560 }
561 }
562
563 return partition_replicate(module, req, req->op.search.base);
564 }
565 }
566
567 /* add */
568 static int partition_add(struct ldb_module *module, struct ldb_request *req)
569 {
570 return partition_replicate(module, req, req->op.add.message->dn);
571 }
572
573 /* modify */
574 static int partition_modify(struct ldb_module *module, struct ldb_request *req)
575 {
576 return partition_replicate(module, req, req->op.mod.message->dn);
577 }
578
579 /* delete */
580 static int partition_delete(struct ldb_module *module, struct ldb_request *req)
581 {
582 return partition_replicate(module, req, req->op.del.dn);
583 }
584
585 /* rename */
586 static int partition_rename(struct ldb_module *module, struct ldb_request *req)
587 {
588 /* Find backend */
589 struct dsdb_control_current_partition *backend, *backend2;
590
591 struct partition_private_data *data = talloc_get_type(module->private_data,
592 struct partition_private_data);
593
594 /* Skip the lot if 'data' isn't here yet (initialization) */
595 if (!data) {
596 return LDB_ERR_OPERATIONS_ERROR;
597 }
598
599 backend = find_partition(data, req->op.rename.olddn);
600 backend2 = find_partition(data, req->op.rename.newdn);
601
602 if ((backend && !backend2) || (!backend && backend2)) {
603 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
604 }
605
606 if (backend != backend2) {
607 ldb_asprintf_errstring(module->ldb,
608 "Cannot rename from %s in %s to %s in %s: %s",
609 ldb_dn_get_linearized(req->op.rename.olddn),
610 ldb_dn_get_linearized(backend->dn),
611 ldb_dn_get_linearized(req->op.rename.newdn),
612 ldb_dn_get_linearized(backend2->dn),
613 ldb_strerror(LDB_ERR_AFFECTS_MULTIPLE_DSAS));
614 return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
615 }
616
617 return partition_replicate(module, req, req->op.rename.olddn);
618 }
619
620 /* start a transaction */
621 static int partition_start_trans(struct ldb_module *module)
622 {
623 int i, ret;
624 struct partition_private_data *data = talloc_get_type(module->private_data,
625 struct partition_private_data);
626 /* Look at base DN */
627 /* Figure out which partition it is under */
628 /* Skip the lot if 'data' isn't here yet (initialization) */
629 ret = ldb_next_start_trans(module);
630 if (ret != LDB_SUCCESS) {
631 return ret;
632 }
633
634 for (i=0; data && data->partitions && data->partitions[i]; i++) {
635 struct ldb_module *next = data->partitions[i]->module;
636 PARTITION_FIND_OP(next, start_transaction);
637
638 ret = next->ops->start_transaction(next);
639 if (ret != LDB_SUCCESS) {
640 /* Back it out, if it fails on one */
641 for (i--; i >= 0; i--) {
642 next = data->partitions[i]->module;
643 PARTITION_FIND_OP(next, del_transaction);
644
645 next->ops->del_transaction(next);
646 }
647 ldb_next_del_trans(module);
648 return ret;
649 }
650 }
651 return LDB_SUCCESS;
652 }
653
654 /* end a transaction */
655 static int partition_end_trans(struct ldb_module *module)
656 {
657 int i, ret;
658 struct partition_private_data *data = talloc_get_type(module->private_data,
659 struct partition_private_data);
660 ret = ldb_next_end_trans(module);
661 if (ret != LDB_SUCCESS) {
662 return ret;
663 }
664
665 /* Look at base DN */
666 /* Figure out which partition it is under */
667 /* Skip the lot if 'data' isn't here yet (initialistion) */
668 for (i=0; data && data->partitions && data->partitions[i]; i++) {
669 struct ldb_module *next = data->partitions[i]->module;
670 PARTITION_FIND_OP(next, end_transaction);
671
672 ret = next->ops->end_transaction(next);
673 if (ret != LDB_SUCCESS) {
674 /* Back it out, if it fails on one */
675 for (i--; i >= 0; i--) {
676 next = data->partitions[i]->module;
677 PARTITION_FIND_OP(next, del_transaction);
678
679 next->ops->del_transaction(next);
680 }
681 ldb_next_del_trans(module);
682 return ret;
683 }
684 }
685
686 return LDB_SUCCESS;
687 }
688
689 /* delete a transaction */
690 static int partition_del_trans(struct ldb_module *module)
691 {
692 int i, ret, ret2 = LDB_SUCCESS;
693 struct partition_private_data *data = talloc_get_type(module->private_data,
694 struct partition_private_data);
695 ret = ldb_next_del_trans(module);
696 if (ret != LDB_SUCCESS) {
697 ret2 = ret;
698 }
699
700 /* Look at base DN */
701 /* Figure out which partition it is under */
702 /* Skip the lot if 'data' isn't here yet (initialistion) */
703 for (i=0; data && data->partitions && data->partitions[i]; i++) {
704 struct ldb_module *next = data->partitions[i]->module;
705 PARTITION_FIND_OP(next, del_transaction);
706
707 ret = next->ops->del_transaction(next);
708 if (ret != LDB_SUCCESS) {
709 ret2 = ret;
710 }
711 }
712 return ret2;
713 }
714
715
716 /* FIXME: This function is still semi-async */
717 static int partition_sequence_number(struct ldb_module *module, struct ldb_request *req)
718 {
719 int i, ret;
720 uint64_t seq_number = 0;
721 uint64_t timestamp_sequence = 0;
722 uint64_t timestamp = 0;
723 struct partition_private_data *data = talloc_get_type(module->private_data,
724 struct partition_private_data);
725 struct ldb_seqnum_request *seq;
726 struct ldb_seqnum_result *seqr;
727 struct ldb_request *treq;
728 struct ldb_seqnum_request *tseq;
729 struct ldb_seqnum_result *tseqr;
730 struct ldb_extended *ext;
731 struct ldb_result *res;
732
733 seq = talloc_get_type(req->op.extended.data, struct ldb_seqnum_request);
734
735 switch (seq->type) {
736 case LDB_SEQ_NEXT:
737 case LDB_SEQ_HIGHEST_SEQ:
738 res = talloc_zero(req, struct ldb_result);
739 if (res == NULL) {
740 return LDB_ERR_OPERATIONS_ERROR;
741 }
742 tseq = talloc_zero(res, struct ldb_seqnum_request);
743 if (tseq == NULL) {
744 talloc_free(res);
745 return LDB_ERR_OPERATIONS_ERROR;
746 }
747 tseq->type = seq->type;
748
749 ret = ldb_build_extended_req(&treq, module->ldb, res,
750 LDB_EXTENDED_SEQUENCE_NUMBER,
751 tseq,
752 NULL,
753 res,
754 ldb_extended_default_callback,
755 NULL);
756 ret = ldb_next_request(module, treq);
757 if (ret == LDB_SUCCESS) {
758 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
759 }
760 if (ret != LDB_SUCCESS) {
761 talloc_free(res);
762 return ret;
763 }
764 seqr = talloc_get_type(res->extended->data,
765 struct ldb_seqnum_result);
766 if (seqr->flags & LDB_SEQ_TIMESTAMP_SEQUENCE) {
767 timestamp_sequence = seqr->seq_num;
768 } else {
769 seq_number += seqr->seq_num;
770 }
771 talloc_free(res);
772
773 /* Skip the lot if 'data' isn't here yet (initialistion) */
774 for (i=0; data && data->partitions && data->partitions[i]; i++) {
775
776 res = talloc_zero(req, struct ldb_result);
777 if (res == NULL) {
778 return LDB_ERR_OPERATIONS_ERROR;
779 }
780 tseq = talloc_zero(res, struct ldb_seqnum_request);
781 if (tseq == NULL) {
782 talloc_free(res);
783 return LDB_ERR_OPERATIONS_ERROR;
784 }
785 tseq->type = seq->type;
786
787 ret = ldb_build_extended_req(&treq, module->ldb, res,
788 LDB_EXTENDED_SEQUENCE_NUMBER,
789 tseq,
790 NULL,
791 res,
792 ldb_extended_default_callback,
793 NULL);
794 if (ret != LDB_SUCCESS) {
795 talloc_free(res);
796 return ret;
797 }
798
799 ret = ldb_request_add_control(treq,
800 DSDB_CONTROL_CURRENT_PARTITION_OID,
801 false, data->partitions[i]);
802 if (ret != LDB_SUCCESS) {
803 talloc_free(res);
804 return ret;
805 }
806
807 ret = partition_request(data->partitions[i]->module, treq);
808 if (ret != LDB_SUCCESS) {
809 talloc_free(res);
810 return ret;
811 }
812 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
813 if (ret != LDB_SUCCESS) {
814 talloc_free(res);
815 return ret;
816 }
817 tseqr = talloc_get_type(res->extended->data,
818 struct ldb_seqnum_result);
819 if (tseqr->flags & LDB_SEQ_TIMESTAMP_SEQUENCE) {
820 timestamp_sequence = MAX(timestamp_sequence,
821 tseqr->seq_num);
822 } else {
823 seq_number += tseqr->seq_num;
824 }
825 talloc_free(res);
826 }
827 /* fall through */
828 case LDB_SEQ_HIGHEST_TIMESTAMP:
829
830 res = talloc_zero(req, struct ldb_result);
831 if (res == NULL) {
832 return LDB_ERR_OPERATIONS_ERROR;
833 }
834
835 tseq = talloc_zero(res, struct ldb_seqnum_request);
836 if (tseq == NULL) {
837 talloc_free(res);
838 return LDB_ERR_OPERATIONS_ERROR;
839 }
840 tseq->type = LDB_SEQ_HIGHEST_TIMESTAMP;
841
842 ret = ldb_build_extended_req(&treq, module->ldb, res,
843 LDB_EXTENDED_SEQUENCE_NUMBER,
844 tseq,
845 NULL,
846 res,
847 ldb_extended_default_callback,
848 NULL);
849 if (ret != LDB_SUCCESS) {
850 talloc_free(res);
851 return ret;
852 }
853
854 ret = ldb_next_request(module, treq);
855 if (ret != LDB_SUCCESS) {
856 talloc_free(res);
857 return ret;
858 }
859 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
860 if (ret != LDB_SUCCESS) {
861 talloc_free(res);
862 return ret;
863 }
864
865 tseqr = talloc_get_type(res->extended->data,
866 struct ldb_seqnum_result);
867 timestamp = tseqr->seq_num;
868
869 talloc_free(res);
870
871 /* Skip the lot if 'data' isn't here yet (initialistion) */
872 for (i=0; data && data->partitions && data->partitions[i]; i++) {
873
874 res = talloc_zero(req, struct ldb_result);
875 if (res == NULL) {
876 return LDB_ERR_OPERATIONS_ERROR;
877 }
878
879 tseq = talloc_zero(res, struct ldb_seqnum_request);
880 if (tseq == NULL) {
881 talloc_free(res);
882 return LDB_ERR_OPERATIONS_ERROR;
883 }
884 tseq->type = LDB_SEQ_HIGHEST_TIMESTAMP;
885
886 ret = ldb_build_extended_req(&treq, module->ldb, res,
887 LDB_EXTENDED_SEQUENCE_NUMBER,
888 tseq,
889 NULL,
890 res,
891 ldb_extended_default_callback,
892 NULL);
893 if (ret != LDB_SUCCESS) {
894 talloc_free(res);
895 return ret;
896 }
897
898 ret = partition_request(data->partitions[i]->module, treq);
899 if (ret != LDB_SUCCESS) {
900 talloc_free(res);
901 return ret;
902 }
903 ret = ldb_wait(treq->handle, LDB_WAIT_ALL);
904 if (ret != LDB_SUCCESS) {
905 talloc_free(res);
906 return ret;
907 }
908
909 tseqr = talloc_get_type(res->extended->data,
910 struct ldb_seqnum_result);
911 timestamp = MAX(timestamp, tseqr->seq_num);
912
913 talloc_free(res);
914 }
915
916 break;
917 }
918
919 ext = talloc_zero(req, struct ldb_extended);
920 if (!ext) {
921 return LDB_ERR_OPERATIONS_ERROR;
922 }
923 seqr = talloc_zero(ext, struct ldb_seqnum_result);
924 if (seqr == NULL) {
925 talloc_free(ext);
926 return LDB_ERR_OPERATIONS_ERROR;
927 }
928 ext->oid = LDB_EXTENDED_SEQUENCE_NUMBER;
929 ext->data = seqr;
930
931 switch (seq->type) {
932 case LDB_SEQ_NEXT:
933 case LDB_SEQ_HIGHEST_SEQ:
934
935 /* Has someone above set a timebase sequence? */
936 if (timestamp_sequence) {
937 seqr->seq_num = (((unsigned long long)timestamp << 24) | (seq_number & 0xFFFFFF));
938 } else {
939 seqr->seq_num = seq_number;
940 }
941
942 if (timestamp_sequence > seqr->seq_num) {
943 seqr->seq_num = timestamp_sequence;
944 seqr->flags |= LDB_SEQ_TIMESTAMP_SEQUENCE;
945 }
946
947 seqr->flags |= LDB_SEQ_GLOBAL_SEQUENCE;
948 break;
949 case LDB_SEQ_HIGHEST_TIMESTAMP:
950 seqr->seq_num = timestamp;
951 break;
952 }
953
954 if (seq->type == LDB_SEQ_NEXT) {
955 seqr->seq_num++;
956 }
957
958 /* send request done */
959 return ldb_module_done(req, NULL, ext, LDB_SUCCESS);
960 }
961
962 static int partition_extended_replicated_objects(struct ldb_module *module, struct ldb_request *req)
963 {
964 struct dsdb_extended_replicated_objects *ext;
965
966 ext = talloc_get_type(req->op.extended.data, struct dsdb_extended_replicated_objects);
967 if (!ext) {
968 ldb_debug(module->ldb, LDB_DEBUG_FATAL, "partition_extended_replicated_objects: invalid extended data\n");
969 return LDB_ERR_PROTOCOL_ERROR;
970 }
971
972 if (ext->version != DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION) {
973 ldb_debug(module->ldb, LDB_DEBUG_FATAL, "partition_extended_replicated_objects: extended data invalid version [%u != %u]\n",
974 ext->version, DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION);
975 return LDB_ERR_PROTOCOL_ERROR;
976 }
977
978 return partition_replicate(module, req, ext->partition_dn);
979 }
980
981 static int partition_extended_schema_update_now(struct ldb_module *module, struct ldb_request *req)
982 {
983 struct dsdb_control_current_partition *partition;
984 struct partition_private_data *data;
985 struct ldb_dn *schema_dn;
986 struct partition_context *ac;
987 int ret;
988
989 schema_dn = talloc_get_type(req->op.extended.data, struct ldb_dn);
990 if (!schema_dn) {
991 ldb_debug(module->ldb, LDB_DEBUG_FATAL, "partition_extended: invalid extended data\n");
992 return LDB_ERR_PROTOCOL_ERROR;
993 }
994
995 data = talloc_get_type(module->private_data, struct partition_private_data);
996 if (!data) {
997 return LDB_ERR_OPERATIONS_ERROR;
998 }
999
1000 partition = find_partition( data, schema_dn );
1001 if (!partition) {
1002 return ldb_next_request(module, req);
1003 }
1004
1005 ac = partition_init_ctx(module, req);
1006 if (!ac) {
1007 return LDB_ERR_OPERATIONS_ERROR;
1008 }
1009
1010 /* we need to add a control but we never touch the original request */
1011 ret = partition_prep_request(ac, partition);
1012 if (ret != LDB_SUCCESS) {
1013 return ret;
1014 }
1015
1016 /* fire the first one */
1017 return partition_call_first(ac);
1018 }
1019
1020
1021 /* extended */
1022 static int partition_extended(struct ldb_module *module, struct ldb_request *req)
1023 {
1024 struct partition_private_data *data;
1025 struct partition_context *ac;
1026
1027 data = talloc_get_type(module->private_data, struct partition_private_data);
1028 if (!data || !data->partitions) {
1029 return ldb_next_request(module, req);
1030 }
1031
1032 if (strcmp(req->op.extended.oid, LDB_EXTENDED_SEQUENCE_NUMBER) == 0) {
1033 return partition_sequence_number(module, req);
1034 }
1035
1036 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_REPLICATED_OBJECTS_OID) == 0) {
1037 return partition_extended_replicated_objects(module, req);
1038 }
1039
1040 /* forward schemaUpdateNow operation to schema_fsmo module*/
1041 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_SCHEMA_UPDATE_NOW_OID) == 0) {
1042 return partition_extended_schema_update_now( module, req );
1043 }
1044
1045 /*
1046 * as the extended operation has no dn
1047 * we need to send it to all partitions
1048 */
1049
1050 ac = partition_init_ctx(module, req);
1051 if (!ac) {
1052 return LDB_ERR_OPERATIONS_ERROR;
1053 }
1054
1055 return partition_send_all(module, ac, req);
1056 }
1057
1058 static int partition_sort_compare(const void *v1, const void *v2)
1059 {
1060 struct dsdb_control_current_partition *p1;
1061 struct dsdb_control_current_partition *p2;
1062
1063 p1 = *((struct dsdb_control_current_partition **)v1);
1064 p2 = *((struct dsdb_control_current_partition **)v2);
1065
1066 return ldb_dn_compare(p1->dn, p2->dn);
1067 }
1068
1069 static int partition_init(struct ldb_module *module)
1070 {
1071 int ret, i;
1072 TALLOC_CTX *mem_ctx = talloc_new(module);
1073 const char *attrs[] = { "partition", "replicateEntries", "modules", NULL };
1074 struct ldb_result *res;
1075 struct ldb_message *msg;
1076 struct ldb_message_element *partition_attributes;
1077 struct ldb_message_element *replicate_attributes;
1078 struct ldb_message_element *modules_attributes;
1079
1080 struct partition_private_data *data;
1081
1082 if (!mem_ctx) {
1083 return LDB_ERR_OPERATIONS_ERROR;
1084 }
1085
1086 data = talloc(mem_ctx, struct partition_private_data);
1087 if (data == NULL) {
1088 return LDB_ERR_OPERATIONS_ERROR;
1089 }
1090
1091 ret = ldb_search(module->ldb, mem_ctx, &res,
1092 ldb_dn_new(mem_ctx, module->ldb, "@PARTITION"),
1093 LDB_SCOPE_BASE, attrs, NULL);
1094 if (ret != LDB_SUCCESS) {
1095 talloc_free(mem_ctx);
1096 return ret;
1097 }
1098 if (res->count == 0) {
1099 talloc_free(mem_ctx);
1100 return ldb_next_init(module);
1101 }
1102
1103 if (res->count > 1) {
1104 talloc_free(mem_ctx);
1105 return LDB_ERR_CONSTRAINT_VIOLATION;
1106 }
1107
1108 msg = res->msgs[0];
1109
1110 partition_attributes = ldb_msg_find_element(msg, "partition");
1111 if (!partition_attributes) {
1112 ldb_set_errstring(module->ldb, "partition_init: no partitions specified");
1113 talloc_free(mem_ctx);
1114 return LDB_ERR_CONSTRAINT_VIOLATION;
1115 }
1116 data->partitions = talloc_array(data, struct dsdb_control_current_partition *, partition_attributes->num_values + 1);
1117 if (!data->partitions) {
1118 talloc_free(mem_ctx);
1119 return LDB_ERR_OPERATIONS_ERROR;
1120 }
1121 for (i=0; i < partition_attributes->num_values; i++) {
1122 char *base = talloc_strdup(data->partitions, (char *)partition_attributes->values[i].data);
1123 char *p = strchr(base, ':');
1124 if (!p) {
1125 ldb_asprintf_errstring(module->ldb,
1126 "partition_init: "
1127 "invalid form for partition record (missing ':'): %s", base);
1128 talloc_free(mem_ctx);
1129 return LDB_ERR_CONSTRAINT_VIOLATION;
1130 }
1131 p[0] = '\0';
1132 p++;
1133 if (!p[0]) {
1134 ldb_asprintf_errstring(module->ldb,
1135 "partition_init: "
1136 "invalid form for partition record (missing backend database): %s", base);
1137 talloc_free(mem_ctx);
1138 return LDB_ERR_CONSTRAINT_VIOLATION;
1139 }
1140 data->partitions[i] = talloc(data->partitions, struct dsdb_control_current_partition);
1141 if (!data->partitions[i]) {
1142 talloc_free(mem_ctx);
1143 return LDB_ERR_OPERATIONS_ERROR;
1144 }
1145 data->partitions[i]->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
1146
1147 data->partitions[i]->dn = ldb_dn_new(data->partitions[i], module->ldb, base);
1148 if (!data->partitions[i]->dn) {
1149 ldb_asprintf_errstring(module->ldb,
1150 "partition_init: invalid DN in partition record: %s", base);
1151 talloc_free(mem_ctx);
1152 return LDB_ERR_CONSTRAINT_VIOLATION;
1153 }
1154
1155 data->partitions[i]->backend = samdb_relative_path(module->ldb,
1156 data->partitions[i],
1157 p);
1158 if (!data->partitions[i]->backend) {
1159 ldb_asprintf_errstring(module->ldb,
1160 "partition_init: unable to determine an relative path for partition: %s", base);
1161 talloc_free(mem_ctx);
1162 }
1163 ret = ldb_connect_backend(module->ldb, data->partitions[i]->backend, NULL, &data->partitions[i]->module);
1164 if (ret != LDB_SUCCESS) {
1165 talloc_free(mem_ctx);
1166 return ret;
1167 }
1168 }
1169 data->partitions[i] = NULL;
1170
1171 /* sort these into order, most to least specific */
1172 qsort(data->partitions, partition_attributes->num_values,
1173 sizeof(*data->partitions), partition_sort_compare);
1174
1175 for (i=0; data->partitions[i]; i++) {
1176 struct ldb_request *req;
1177 req = talloc_zero(mem_ctx, struct ldb_request);
1178 if (req == NULL) {
1179 ldb_debug(module->ldb, LDB_DEBUG_ERROR, "partition: Out of memory!\n");
1180 talloc_free(mem_ctx);
1181 return LDB_ERR_OPERATIONS_ERROR;
1182 }
1183
1184 req->operation = LDB_REQ_REGISTER_PARTITION;
1185 req->op.reg_partition.dn = data->partitions[i]->dn;
1186 req->callback = ldb_op_default_callback;
1187
1188 ldb_set_timeout(module->ldb, req, 0);
1189
1190 req->handle = ldb_handle_new(req, module->ldb);
1191 if (req->handle == NULL) {
1192 return LDB_ERR_OPERATIONS_ERROR;
1193 }
1194
1195 ret = ldb_request(module->ldb, req);
1196 if (ret == LDB_SUCCESS) {
1197 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
1198 }
1199 if (ret != LDB_SUCCESS) {
1200 ldb_debug(module->ldb, LDB_DEBUG_ERROR, "partition: Unable to register partition with rootdse!\n");
1201 talloc_free(mem_ctx);
1202 return LDB_ERR_OTHER;
1203 }
1204 talloc_free(req);
1205 }
1206
1207 replicate_attributes = ldb_msg_find_element(msg, "replicateEntries");
1208 if (!replicate_attributes) {
1209 data->replicate = NULL;
1210 } else {
1211 data->replicate = talloc_array(data, struct ldb_dn *, replicate_attributes->num_values + 1);
1212 if (!data->replicate) {
1213 talloc_free(mem_ctx);
1214 return LDB_ERR_OPERATIONS_ERROR;
1215 }
1216
1217 for (i=0; i < replicate_attributes->num_values; i++) {
1218 data->replicate[i] = ldb_dn_from_ldb_val(data->replicate, module->ldb, &replicate_attributes->values[i]);
1219 if (!ldb_dn_validate(data->replicate[i])) {
1220 ldb_asprintf_errstring(module->ldb,
1221 "partition_init: "
1222 "invalid DN in partition replicate record: %s",
1223 replicate_attributes->values[i].data);
1224 talloc_free(mem_ctx);
1225 return LDB_ERR_CONSTRAINT_VIOLATION;
1226 }
1227 }
1228 data->replicate[i] = NULL;
1229 }
1230
1231 /* Make the private data available to any searches the modules may trigger in initialisation */
1232 module->private_data = data;
1233 talloc_steal(module, data);
1234
1235 modules_attributes = ldb_msg_find_element(msg, "modules");
1236 if (modules_attributes) {
1237 for (i=0; i < modules_attributes->num_values; i++) {
1238 struct ldb_dn *base_dn;
1239 int partition_idx;
1240 struct dsdb_control_current_partition *partition = NULL;
1241 const char **modules = NULL;
1242
1243 char *base = talloc_strdup(data->partitions, (char *)modules_attributes->values[i].data);
1244 char *p = strchr(base, ':');
1245 if (!p) {
1246 ldb_asprintf_errstring(module->ldb,
1247 "partition_init: "
1248 "invalid form for partition module record (missing ':'): %s", base);
1249 talloc_free(mem_ctx);
1250 return LDB_ERR_CONSTRAINT_VIOLATION;
1251 }
1252 p[0] = '\0';
1253 p++;
1254 if (!p[0]) {
1255 ldb_asprintf_errstring(module->ldb,
1256 "partition_init: "
1257 "invalid form for partition module record (missing backend database): %s", base);
1258 talloc_free(mem_ctx);
1259 return LDB_ERR_CONSTRAINT_VIOLATION;
1260 }
1261
1262 modules = ldb_modules_list_from_string(module->ldb, mem_ctx,
1263 p);
1264
1265 base_dn = ldb_dn_new(mem_ctx, module->ldb, base);
1266 if (!ldb_dn_validate(base_dn)) {
1267 talloc_free(mem_ctx);
1268 return LDB_ERR_OPERATIONS_ERROR;
1269 }
1270
1271 for (partition_idx = 0; data->partitions[partition_idx]; partition_idx++) {
1272 if (ldb_dn_compare(data->partitions[partition_idx]->dn, base_dn) == 0) {
1273 partition = data->partitions[partition_idx];
1274 break;
1275 }
1276 }
1277
1278 if (!partition) {
1279 ldb_asprintf_errstring(module->ldb,
1280 "partition_init: "
1281 "invalid form for partition module record (no such partition): %s", base);
1282 talloc_free(mem_ctx);
1283 return LDB_ERR_CONSTRAINT_VIOLATION;
1284 }
1285
1286 ret = ldb_load_modules_list(module->ldb, modules, partition->module, &partition->module);
1287 if (ret != LDB_SUCCESS) {
1288 ldb_asprintf_errstring(module->ldb,
1289 "partition_init: "
1290 "loading backend for %s failed: %s",
1291 base, ldb_errstring(module->ldb));
1292 talloc_free(mem_ctx);
1293 return ret;
1294 }
1295 ret = ldb_init_module_chain(module->ldb, partition->module);
1296 if (ret != LDB_SUCCESS) {
1297 ldb_asprintf_errstring(module->ldb,
1298 "partition_init: "
1299 "initialising backend for %s failed: %s",
1300 base, ldb_errstring(module->ldb));
1301 talloc_free(mem_ctx);
1302 return ret;
1303 }
1304 }
1305 }
1306
1307 ret = ldb_mod_register_control(module, LDB_CONTROL_DOMAIN_SCOPE_OID);
1308 if (ret != LDB_SUCCESS) {
1309 ldb_debug(module->ldb, LDB_DEBUG_ERROR,
1310 "partition: Unable to register control with rootdse!\n");
1311 return LDB_ERR_OPERATIONS_ERROR;
1312 }
1313
1314 ret = ldb_mod_register_control(module, LDB_CONTROL_SEARCH_OPTIONS_OID);
1315 if (ret != LDB_SUCCESS) {
1316 ldb_debug(module->ldb, LDB_DEBUG_ERROR,
1317 "partition: Unable to register control with rootdse!\n");
1318 return LDB_ERR_OPERATIONS_ERROR;
1319 }
1320
1321 talloc_free(mem_ctx);
1322 return ldb_next_init(module);
1323 }
1324
1325 _PUBLIC_ const struct ldb_module_ops ldb_partition_module_ops = {
1326 .name = "partition",
1327 .init_context = partition_init,
1328 .search = partition_search,
1329 .add = partition_add,
1330 .modify = partition_modify,
1331 .del = partition_delete,
1332 .rename = partition_rename,
1333 .extended = partition_extended,
1334 .start_transaction = partition_start_trans,
1335 .end_transaction = partition_end_trans,
1336 .del_transaction = partition_del_trans,
1337 };
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