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use unsigned instead of uint32_t for LDB counters.
[Samba/cd1.git] / source4 / dsdb / samdb / ldb_modules / extended_dn_out.c
blobc986f8fe93ee15398c56474883852da3138d7d3e
1 /*
2 ldb database library
3
4 Copyright (C) Simo Sorce 2005-2008
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2007-2009
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 /*
22 * Name: ldb
23 *
24 * Component: ldb extended dn control module
25 *
26 * Description: this module builds a special dn for returned search
27 * results, and fixes some other aspects of the result (returned case issues)
28 * values.
29 *
30 * Authors: Simo Sorce
31 * Andrew Bartlett
32 */
33
34 #include "includes.h"
35 #include "ldb/include/ldb.h"
36 #include "ldb/include/ldb_errors.h"
37 #include "ldb/include/ldb_module.h"
38 #include "libcli/security/dom_sid.h"
39 #include "librpc/gen_ndr/ndr_misc.h"
40 #include "librpc/gen_ndr/ndr_security.h"
41 #include "librpc/ndr/libndr.h"
42 #include "dsdb/samdb/samdb.h"
43
44 struct extended_dn_out_private {
45 bool dereference;
46 bool normalise;
47 struct dsdb_openldap_dereference_control *dereference_control;
48 };
49
50 static bool is_attr_in_list(const char * const * attrs, const char *attr)
51 {
52 unsigned int i;
53
54 for (i = 0; attrs[i]; i++) {
55 if (ldb_attr_cmp(attrs[i], attr) == 0)
56 return true;
57 }
58
59 return false;
60 }
61
62 static char **copy_attrs(void *mem_ctx, const char * const * attrs)
63 {
64 char **nattrs;
65 unsigned int i, num;
66
67 for (num = 0; attrs[num]; num++);
68
69 nattrs = talloc_array(mem_ctx, char *, num + 1);
70 if (!nattrs) return NULL;
71
72 for(i = 0; i < num; i++) {
73 nattrs[i] = talloc_strdup(nattrs, attrs[i]);
74 if (!nattrs[i]) {
75 talloc_free(nattrs);
76 return NULL;
77 }
78 }
79 nattrs[i] = NULL;
80
81 return nattrs;
82 }
83
84 static bool add_attrs(void *mem_ctx, char ***attrs, const char *attr)
85 {
86 char **nattrs;
87 unsigned int num;
88
89 for (num = 0; (*attrs)[num]; num++);
90
91 nattrs = talloc_realloc(mem_ctx, *attrs, char *, num + 2);
92 if (!nattrs) return false;
93
94 *attrs = nattrs;
95
96 nattrs[num] = talloc_strdup(nattrs, attr);
97 if (!nattrs[num]) return false;
98
99 nattrs[num + 1] = NULL;
100
101 return true;
102 }
103
104 /* Fix the DN so that the relative attribute names are in upper case so that the DN:
105 cn=Adminstrator,cn=users,dc=samba,dc=example,dc=com becomes
106 CN=Adminstrator,CN=users,DC=samba,DC=example,DC=com
107 */
108
109
110 static int fix_dn(struct ldb_dn *dn)
111 {
112 int i, ret;
113 char *upper_rdn_attr;
114
115 for (i=0; i < ldb_dn_get_comp_num(dn); i++) {
116 /* We need the attribute name in upper case */
117 upper_rdn_attr = strupper_talloc(dn,
118 ldb_dn_get_component_name(dn, i));
119 if (!upper_rdn_attr) {
120 return LDB_ERR_OPERATIONS_ERROR;
121 }
122
123 /* And replace it with CN=foo (we need the attribute in upper case */
124 ret = ldb_dn_set_component(dn, i, upper_rdn_attr,
125 *ldb_dn_get_component_val(dn, i));
126 talloc_free(upper_rdn_attr);
127 if (ret != LDB_SUCCESS) {
128 return ret;
129 }
130 }
131 return LDB_SUCCESS;
132 }
133
134 /* Inject the extended DN components, so the DN cn=Adminstrator,cn=users,dc=samba,dc=example,dc=com becomes
135 <GUID=541203ae-f7d6-47ef-8390-bfcf019f9583>;<SID=S-1-5-21-4177067393-1453636373-93818737-500>;cn=Adminstrator,cn=users,dc=samba,dc=example,dc=com */
136
137 static int inject_extended_dn_out(struct ldb_reply *ares,
138 struct ldb_context *ldb,
139 int type,
140 bool remove_guid,
141 bool remove_sid)
142 {
143 int ret;
144 const DATA_BLOB *guid_blob;
145 const DATA_BLOB *sid_blob;
146
147 guid_blob = ldb_msg_find_ldb_val(ares->message, "objectGUID");
148 sid_blob = ldb_msg_find_ldb_val(ares->message, "objectSID");
149
150 if (!guid_blob) {
151 ldb_set_errstring(ldb, "Did not find objectGUID to inject into extended DN");
152 return LDB_ERR_OPERATIONS_ERROR;
153 }
154
155 ret = ldb_dn_set_extended_component(ares->message->dn, "GUID", guid_blob);
156 if (ret != LDB_SUCCESS) {
157 return ret;
158 }
159 if (sid_blob) {
160 ret = ldb_dn_set_extended_component(ares->message->dn, "SID", sid_blob);
161 if (ret != LDB_SUCCESS) {
162 return ret;
163 }
164 }
165
166 if (remove_guid) {
167 ldb_msg_remove_attr(ares->message, "objectGUID");
168 }
169
170 if (sid_blob && remove_sid) {
171 ldb_msg_remove_attr(ares->message, "objectSID");
172 }
173
174 return LDB_SUCCESS;
175 }
176
177 static int handle_dereference_openldap(struct ldb_dn *dn,
178 struct dsdb_openldap_dereference_result **dereference_attrs,
179 const char *attr, const DATA_BLOB *val)
180 {
181 const struct ldb_val *entryUUIDblob, *sid_blob;
182 struct ldb_message fake_msg; /* easier to use routines that expect an ldb_message */
183 unsigned int j;
184
185 fake_msg.num_elements = 0;
186
187 /* Look for this attribute in the returned control */
188 for (j = 0; dereference_attrs && dereference_attrs[j]; j++) {
189 struct ldb_val source_dn = data_blob_string_const(dereference_attrs[j]->dereferenced_dn);
190 if (ldb_attr_cmp(dereference_attrs[j]->source_attribute, attr) == 0
191 && data_blob_cmp(&source_dn, val) == 0) {
192 fake_msg.num_elements = dereference_attrs[j]->num_attributes;
193 fake_msg.elements = dereference_attrs[j]->attributes;
194 break;
195 }
196 }
197 if (!fake_msg.num_elements) {
198 return LDB_SUCCESS;
199 }
200 /* Look for an OpenLDAP entryUUID */
201
202 entryUUIDblob = ldb_msg_find_ldb_val(&fake_msg, "entryUUID");
203 if (entryUUIDblob) {
204 NTSTATUS status;
205 struct ldb_val guid_blob;
206 struct GUID guid;
207
208 status = GUID_from_data_blob(entryUUIDblob, &guid);
209
210 if (!NT_STATUS_IS_OK(status)) {
211 return LDB_ERR_INVALID_DN_SYNTAX;
212 }
213 status = GUID_to_ndr_blob(&guid, dn, &guid_blob);
214 if (!NT_STATUS_IS_OK(status)) {
215 return LDB_ERR_INVALID_DN_SYNTAX;
216 }
217
218 ldb_dn_set_extended_component(dn, "GUID", &guid_blob);
219 }
220
221 sid_blob = ldb_msg_find_ldb_val(&fake_msg, "objectSID");
222
223 /* Look for the objectSID */
224 if (sid_blob) {
225 ldb_dn_set_extended_component(dn, "SID", sid_blob);
226 }
227 return LDB_SUCCESS;
228 }
229
230 static int handle_dereference_fds(struct ldb_dn *dn,
231 struct dsdb_openldap_dereference_result **dereference_attrs,
232 const char *attr, const DATA_BLOB *val)
233 {
234 const struct ldb_val *nsUniqueIdBlob, *sidBlob;
235 struct ldb_message fake_msg; /* easier to use routines that expect an ldb_message */
236 unsigned int j;
237
238 fake_msg.num_elements = 0;
239
240 /* Look for this attribute in the returned control */
241 for (j = 0; dereference_attrs && dereference_attrs[j]; j++) {
242 struct ldb_val source_dn = data_blob_string_const(dereference_attrs[j]->dereferenced_dn);
243 if (ldb_attr_cmp(dereference_attrs[j]->source_attribute, attr) == 0
244 && data_blob_cmp(&source_dn, val) == 0) {
245 fake_msg.num_elements = dereference_attrs[j]->num_attributes;
246 fake_msg.elements = dereference_attrs[j]->attributes;
247 break;
248 }
249 }
250 if (!fake_msg.num_elements) {
251 return LDB_SUCCESS;
252 }
253
254 /* Look for the nsUniqueId */
255
256 nsUniqueIdBlob = ldb_msg_find_ldb_val(&fake_msg, "nsUniqueId");
257 if (nsUniqueIdBlob) {
258 NTSTATUS status;
259 struct ldb_val guid_blob;
260 struct GUID guid;
261
262 status = NS_GUID_from_string((char *)nsUniqueIdBlob->data, &guid);
263
264 if (!NT_STATUS_IS_OK(status)) {
265 return LDB_ERR_INVALID_DN_SYNTAX;
266 }
267 status = GUID_to_ndr_blob(&guid, dn, &guid_blob);
268 if (!NT_STATUS_IS_OK(status)) {
269 return LDB_ERR_INVALID_DN_SYNTAX;
270 }
271
272 ldb_dn_set_extended_component(dn, "GUID", &guid_blob);
273 }
274
275 /* Look for the objectSID */
276
277 sidBlob = ldb_msg_find_ldb_val(&fake_msg, "sambaSID");
278 if (sidBlob) {
279 enum ndr_err_code ndr_err;
280
281 struct ldb_val sid_blob;
282 struct dom_sid *sid;
283
284 sid = dom_sid_parse_length(NULL, sidBlob);
285
286 if (sid == NULL) {
287 return LDB_ERR_INVALID_DN_SYNTAX;
288 }
289
290 ndr_err = ndr_push_struct_blob(&sid_blob, NULL, NULL, sid,
291 (ndr_push_flags_fn_t)ndr_push_dom_sid);
292 talloc_free(sid);
293 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
294 return LDB_ERR_INVALID_DN_SYNTAX;
295 }
296
297 ldb_dn_set_extended_component(dn, "SID", &sid_blob);
298 }
299 return LDB_SUCCESS;
300 }
301
302 /* search */
303 struct extended_search_context {
304 struct ldb_module *module;
305 const struct dsdb_schema *schema;
306 struct ldb_request *req;
307 bool inject;
308 bool remove_guid;
309 bool remove_sid;
310 int extended_type;
311 };
312
313 static int extended_callback(struct ldb_request *req, struct ldb_reply *ares,
314 int (*handle_dereference)(struct ldb_dn *dn,
315 struct dsdb_openldap_dereference_result **dereference_attrs,
316 const char *attr, const DATA_BLOB *val))
317 {
318 struct extended_search_context *ac;
319 struct ldb_control *control;
320 struct dsdb_openldap_dereference_result_control *dereference_control = NULL;
321 int ret;
322 unsigned int i, j;
323 struct ldb_message *msg = ares->message;
324 struct extended_dn_out_private *p;
325 struct ldb_context *ldb;
326 bool have_reveal_control, checked_reveal_control=false;
327
328 ac = talloc_get_type(req->context, struct extended_search_context);
329 p = talloc_get_type(ldb_module_get_private(ac->module), struct extended_dn_out_private);
330 ldb = ldb_module_get_ctx(ac->module);
331 if (!ares) {
332 return ldb_module_done(ac->req, NULL, NULL,
333 LDB_ERR_OPERATIONS_ERROR);
334 }
335 if (ares->error != LDB_SUCCESS) {
336 return ldb_module_done(ac->req, ares->controls,
337 ares->response, ares->error);
338 }
339
340 switch (ares->type) {
341 case LDB_REPLY_REFERRAL:
342 return ldb_module_send_referral(ac->req, ares->referral);
343
344 case LDB_REPLY_DONE:
345 return ldb_module_done(ac->req, ares->controls,
346 ares->response, LDB_SUCCESS);
347 case LDB_REPLY_ENTRY:
348 break;
349 }
350
351 if (p && p->normalise) {
352 ret = fix_dn(ares->message->dn);
353 if (ret != LDB_SUCCESS) {
354 return ldb_module_done(ac->req, NULL, NULL, ret);
355 }
356 }
357
358 if (ac->inject) {
359 /* for each record returned post-process to add any derived
360 attributes that have been asked for */
361 ret = inject_extended_dn_out(ares, ldb,
362 ac->extended_type, ac->remove_guid,
363 ac->remove_sid);
364 if (ret != LDB_SUCCESS) {
365 return ldb_module_done(ac->req, NULL, NULL, ret);
366 }
367 }
368
369 if ((p && p->normalise) || ac->inject) {
370 const struct ldb_val *val = ldb_msg_find_ldb_val(ares->message, "distinguishedName");
371 if (val) {
372 ldb_msg_remove_attr(ares->message, "distinguishedName");
373 if (ac->inject) {
374 ret = ldb_msg_add_steal_string(ares->message, "distinguishedName",
375 ldb_dn_get_extended_linearized(ares->message, ares->message->dn, ac->extended_type));
376 } else {
377 ret = ldb_msg_add_linearized_dn(ares->message,
378 "distinguishedName",
379 ares->message->dn);
380 }
381 if (ret != LDB_SUCCESS) {
382 ldb_oom(ldb);
383 return LDB_ERR_OPERATIONS_ERROR;
384 }
385 }
386 }
387
388 if (p && p->dereference) {
389 control = ldb_reply_get_control(ares, DSDB_OPENLDAP_DEREFERENCE_CONTROL);
390
391 if (control && control->data) {
392 dereference_control = talloc_get_type(control->data, struct dsdb_openldap_dereference_result_control);
393 }
394 }
395
396 /* Walk the returned elements (but only if we have a schema to
397 * interpret the list with) */
398 for (i = 0; ac->schema && i < msg->num_elements; i++) {
399 bool make_extended_dn;
400 const struct dsdb_attribute *attribute;
401 attribute = dsdb_attribute_by_lDAPDisplayName(ac->schema, msg->elements[i].name);
402 if (!attribute) {
403 continue;
404 }
405
406 if (p->normalise) {
407 /* If we are also in 'normalise' mode, then
408 * fix the attribute names to be in the
409 * correct case */
410 msg->elements[i].name = talloc_strdup(msg->elements, attribute->lDAPDisplayName);
411 if (!msg->elements[i].name) {
412 ldb_oom(ldb);
413 return ldb_module_done(ac->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
414 }
415 }
416
417 /* distinguishedName has been dealt with above */
418 if (ldb_attr_cmp(msg->elements[i].name, "distinguishedName") == 0) {
419 continue;
420 }
421
422 /* Look to see if this attributeSyntax is a DN */
423 if (dsdb_dn_oid_to_format(attribute->syntax->ldap_oid) == DSDB_INVALID_DN) {
424 continue;
425 }
426
427 make_extended_dn = ac->inject;
428
429 /* Always show plain DN in case of Object(OR-Name) syntax */
430 if (make_extended_dn) {
431 make_extended_dn = (strcmp(attribute->syntax->ldap_oid, DSDB_SYNTAX_OR_NAME) != 0);
432 }
433
434 for (j = 0; j < msg->elements[i].num_values; j++) {
435 const char *dn_str;
436 struct ldb_dn *dn;
437 struct dsdb_dn *dsdb_dn = NULL;
438 struct ldb_val *plain_dn = &msg->elements[i].values[j];
439
440 if (!checked_reveal_control) {
441 have_reveal_control =
442 ldb_request_get_control(req, LDB_CONTROL_REVEAL_INTERNALS) != NULL;
443 checked_reveal_control = true;
444 }
445
446 /* this is a fast method for detecting deleted
447 linked attributes, working on the unparsed
448 ldb_val */
449 if (dsdb_dn_is_deleted_val(plain_dn) && !have_reveal_control) {
450 /* it's a deleted linked attribute,
451 and we don't have the reveal control */
452 memmove(&msg->elements[i].values[j],
453 &msg->elements[i].values[j+1],
454 (msg->elements[i].num_values-(j+1))*sizeof(struct ldb_val));
455 msg->elements[i].num_values--;
456 j--;
457 continue;
458 }
459
460
461 dsdb_dn = dsdb_dn_parse(msg, ldb, plain_dn, attribute->syntax->ldap_oid);
462
463 if (!dsdb_dn || !ldb_dn_validate(dsdb_dn->dn)) {
464 ldb_asprintf_errstring(ldb,
465 "could not parse %.*s in %s on %s as a %s DN",
466 (int)plain_dn->length, plain_dn->data,
467 msg->elements[i].name, ldb_dn_get_linearized(msg->dn),
468 attribute->syntax->ldap_oid);
469 talloc_free(dsdb_dn);
470 return ldb_module_done(ac->req, NULL, NULL, LDB_ERR_INVALID_DN_SYNTAX);
471 }
472 dn = dsdb_dn->dn;
473
474 /* don't let users see the internal extended
475 GUID components */
476 if (!have_reveal_control) {
477 const char *accept[] = { "GUID", "SID", "WKGUID", NULL };
478 ldb_dn_extended_filter(dn, accept);
479 }
480
481 if (p->normalise) {
482 ret = fix_dn(dn);
483 if (ret != LDB_SUCCESS) {
484 talloc_free(dsdb_dn);
485 return ldb_module_done(ac->req, NULL, NULL, ret);
486 }
487 }
488
489 /* If we are running in dereference mode (such
490 * as against OpenLDAP) then the DN in the msg
491 * above does not contain the extended values,
492 * and we need to look in the dereference
493 * result */
494
495 /* Look for this value in the attribute */
496
497 if (dereference_control) {
498 ret = handle_dereference(dn,
499 dereference_control->attributes,
500 msg->elements[i].name,
501 &msg->elements[i].values[j]);
502 if (ret != LDB_SUCCESS) {
503 talloc_free(dsdb_dn);
504 return ldb_module_done(ac->req, NULL, NULL, ret);
505 }
506 }
507
508 if (make_extended_dn) {
509 dn_str = dsdb_dn_get_extended_linearized(msg->elements[i].values,
510 dsdb_dn, ac->extended_type);
511 } else {
512 dn_str = dsdb_dn_get_linearized(msg->elements[i].values,
513 dsdb_dn);
514 }
515
516 if (!dn_str) {
517 ldb_oom(ldb);
518 talloc_free(dsdb_dn);
519 return ldb_module_done(ac->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
520 }
521 msg->elements[i].values[j] = data_blob_string_const(dn_str);
522 talloc_free(dsdb_dn);
523 }
524 if (msg->elements[i].num_values == 0) {
525 /* we've deleted all of the values from this
526 * element - remove the element */
527 memmove(&msg->elements[i],
528 &msg->elements[i+1],
529 (msg->num_elements-(i+1))*sizeof(struct ldb_message_element));
530 msg->num_elements--;
531 i--;
532 }
533 }
534 return ldb_module_send_entry(ac->req, msg, ares->controls);
535 }
536
537 static int extended_callback_ldb(struct ldb_request *req, struct ldb_reply *ares)
538 {
539 return extended_callback(req, ares, NULL);
540 }
541
542 static int extended_callback_openldap(struct ldb_request *req, struct ldb_reply *ares)
543 {
544 return extended_callback(req, ares, handle_dereference_openldap);
545 }
546
547 static int extended_callback_fds(struct ldb_request *req, struct ldb_reply *ares)
548 {
549 return extended_callback(req, ares, handle_dereference_fds);
550 }
551
552 static int extended_dn_out_search(struct ldb_module *module, struct ldb_request *req,
553 int (*callback)(struct ldb_request *req, struct ldb_reply *ares))
554 {
555 struct ldb_control *control;
556 struct ldb_control *storage_format_control;
557 struct ldb_extended_dn_control *extended_ctrl = NULL;
558 struct extended_search_context *ac;
559 struct ldb_request *down_req;
560 char **new_attrs;
561 const char * const *const_attrs;
562 struct ldb_context *ldb = ldb_module_get_ctx(module);
563 int ret;
564
565 struct extended_dn_out_private *p = talloc_get_type(ldb_module_get_private(module), struct extended_dn_out_private);
566
567 /* check if there's an extended dn control */
568 control = ldb_request_get_control(req, LDB_CONTROL_EXTENDED_DN_OID);
569 if (control && control->data) {
570 extended_ctrl = talloc_get_type(control->data, struct ldb_extended_dn_control);
571 if (!extended_ctrl) {
572 return LDB_ERR_PROTOCOL_ERROR;
573 }
574 }
575
576 /* Look to see if, as we are in 'store DN+GUID+SID' mode, the
577 * client is after the storage format (to fill in linked
578 * attributes) */
579 storage_format_control = ldb_request_get_control(req, DSDB_CONTROL_DN_STORAGE_FORMAT_OID);
580 if (!control && storage_format_control && storage_format_control->data) {
581 extended_ctrl = talloc_get_type(storage_format_control->data, struct ldb_extended_dn_control);
582 if (!extended_ctrl) {
583 ldb_set_errstring(ldb, "extended_dn_out: extended_ctrl was of the wrong data type");
584 return LDB_ERR_PROTOCOL_ERROR;
585 }
586 }
587
588 ac = talloc_zero(req, struct extended_search_context);
589 if (ac == NULL) {
590 ldb_oom(ldb);
591 return LDB_ERR_OPERATIONS_ERROR;
592 }
593
594 ac->module = module;
595 ac->schema = dsdb_get_schema(ldb);
596 ac->req = req;
597 ac->inject = false;
598 ac->remove_guid = false;
599 ac->remove_sid = false;
600
601 const_attrs = req->op.search.attrs;
602
603 /* We only need to do special processing if we were asked for
604 * the extended DN, or we are 'store DN+GUID+SID'
605 * (!dereference) mode. (This is the normal mode for LDB on
606 * tdb). */
607 if (control || (storage_format_control && p && !p->dereference)) {
608 ac->inject = true;
609 if (extended_ctrl) {
610 ac->extended_type = extended_ctrl->type;
611 } else {
612 ac->extended_type = 0;
613 }
614
615 /* check if attrs only is specified, in that case check wether we need to modify them */
616 if (req->op.search.attrs && !is_attr_in_list(req->op.search.attrs, "*")) {
617 if (! is_attr_in_list(req->op.search.attrs, "objectGUID")) {
618 ac->remove_guid = true;
619 }
620 if (! is_attr_in_list(req->op.search.attrs, "objectSID")) {
621 ac->remove_sid = true;
622 }
623 if (ac->remove_guid || ac->remove_sid) {
624 new_attrs = copy_attrs(ac, req->op.search.attrs);
625 if (new_attrs == NULL) {
626 ldb_oom(ldb);
627 return LDB_ERR_OPERATIONS_ERROR;
628 }
629
630 if (ac->remove_guid) {
631 if (!add_attrs(ac, &new_attrs, "objectGUID"))
632 return LDB_ERR_OPERATIONS_ERROR;
633 }
634 if (ac->remove_sid) {
635 if (!add_attrs(ac, &new_attrs, "objectSID"))
636 return LDB_ERR_OPERATIONS_ERROR;
637 }
638 const_attrs = (const char * const *)new_attrs;
639 }
640 }
641 }
642
643 ret = ldb_build_search_req_ex(&down_req,
644 ldb, ac,
645 req->op.search.base,
646 req->op.search.scope,
647 req->op.search.tree,
648 const_attrs,
649 req->controls,
650 ac, callback,
651 req);
652 if (ret != LDB_SUCCESS) {
653 return ret;
654 }
655
656 /* mark extended DN and storage format controls as done */
657 if (control) {
658 control->critical = 0;
659 }
660
661 if (storage_format_control) {
662 storage_format_control->critical = 0;
663 }
664
665 /* Add in dereference control, if we were asked to, we are
666 * using the 'dereference' mode (such as with an OpenLDAP
667 * backend) and have the control prepared */
668 if (control && p && p->dereference && p->dereference_control) {
669 ret = ldb_request_add_control(down_req,
670 DSDB_OPENLDAP_DEREFERENCE_CONTROL,
671 false, p->dereference_control);
672 if (ret != LDB_SUCCESS) {
673 return ret;
674 }
675 }
676
677 /* perform the search */
678 return ldb_next_request(module, down_req);
679 }
680
681 static int extended_dn_out_ldb_search(struct ldb_module *module, struct ldb_request *req)
682 {
683 return extended_dn_out_search(module, req, extended_callback_ldb);
684 }
685
686 static int extended_dn_out_openldap_search(struct ldb_module *module, struct ldb_request *req)
687 {
688 return extended_dn_out_search(module, req, extended_callback_openldap);
689 }
690
691 static int extended_dn_out_fds_search(struct ldb_module *module, struct ldb_request *req)
692 {
693 return extended_dn_out_search(module, req, extended_callback_fds);
694 }
695
696 static int extended_dn_out_ldb_init(struct ldb_module *module)
697 {
698 int ret;
699
700 struct extended_dn_out_private *p = talloc(module, struct extended_dn_out_private);
701 struct dsdb_extended_dn_store_format *dn_format;
702
703 ldb_module_set_private(module, p);
704
705 if (!p) {
706 ldb_oom(ldb_module_get_ctx(module));
707 return LDB_ERR_OPERATIONS_ERROR;
708 }
709
710 dn_format = talloc(p, struct dsdb_extended_dn_store_format);
711 if (!dn_format) {
712 talloc_free(p);
713 ldb_oom(ldb_module_get_ctx(module));
714 return LDB_ERR_OPERATIONS_ERROR;
715 }
716
717 dn_format->store_extended_dn_in_ldb = true;
718 ret = ldb_set_opaque(ldb_module_get_ctx(module), DSDB_EXTENDED_DN_STORE_FORMAT_OPAQUE_NAME, dn_format);
719 if (ret != LDB_SUCCESS) {
720 talloc_free(p);
721 return ret;
722 }
723
724 p->dereference = false;
725 p->normalise = false;
726
727 ret = ldb_mod_register_control(module, LDB_CONTROL_EXTENDED_DN_OID);
728 if (ret != LDB_SUCCESS) {
729 ldb_debug(ldb_module_get_ctx(module), LDB_DEBUG_ERROR,
730 "extended_dn_out: Unable to register control with rootdse!\n");
731 return LDB_ERR_OPERATIONS_ERROR;
732 }
733
734 return ldb_next_init(module);
735 }
736
737 static int extended_dn_out_dereference_init(struct ldb_module *module, const char *attrs[])
738 {
739 int ret;
740 unsigned int i = 0;
741 struct extended_dn_out_private *p = talloc_zero(module, struct extended_dn_out_private);
742 struct dsdb_extended_dn_store_format *dn_format;
743 struct dsdb_openldap_dereference_control *dereference_control;
744 struct dsdb_attribute *cur;
745 struct ldb_context *ldb = ldb_module_get_ctx(module);
746 struct dsdb_schema *schema;
747
748 ldb_module_set_private(module, p);
749
750 if (!p) {
751 ldb_oom(ldb);
752 return LDB_ERR_OPERATIONS_ERROR;
753 }
754
755 dn_format = talloc(p, struct dsdb_extended_dn_store_format);
756 if (!dn_format) {
757 talloc_free(p);
758 ldb_oom(ldb_module_get_ctx(module));
759 return LDB_ERR_OPERATIONS_ERROR;
760 }
761
762 dn_format->store_extended_dn_in_ldb = false;
763
764 ret = ldb_set_opaque(ldb_module_get_ctx(module), DSDB_EXTENDED_DN_STORE_FORMAT_OPAQUE_NAME, dn_format);
765 if (ret != LDB_SUCCESS) {
766 talloc_free(p);
767 return ret;
768 }
769
770 p->dereference = true;
771
772 /* At the moment, servers that need dereference also need the
773 * DN and attribute names to be normalised */
774 p->normalise = true;
775
776 ret = ldb_mod_register_control(module, LDB_CONTROL_EXTENDED_DN_OID);
777 if (ret != LDB_SUCCESS) {
778 ldb_debug(ldb, LDB_DEBUG_ERROR,
779 "extended_dn_out: Unable to register control with rootdse!\n");
780 return LDB_ERR_OPERATIONS_ERROR;
781 }
782
783 ret = ldb_next_init(module);
784
785 if (ret != LDB_SUCCESS) {
786 return ret;
787 }
788
789 schema = dsdb_get_schema(ldb);
790 if (!schema) {
791 /* No schema on this DB (yet) */
792 return LDB_SUCCESS;
793 }
794
795 p->dereference_control = dereference_control
796 = talloc_zero(p, struct dsdb_openldap_dereference_control);
797
798 if (!p->dereference_control) {
799 ldb_oom(ldb);
800 return LDB_ERR_OPERATIONS_ERROR;
801 }
802
803 for (cur = schema->attributes; cur; cur = cur->next) {
804 if (dsdb_dn_oid_to_format(cur->syntax->ldap_oid) == DSDB_INVALID_DN) {
805 continue;
806 }
807 dereference_control->dereference
808 = talloc_realloc(p, dereference_control->dereference,
809 struct dsdb_openldap_dereference *, i + 2);
810 if (!dereference_control) {
811 ldb_oom(ldb);
812 return LDB_ERR_OPERATIONS_ERROR;
813 }
814 dereference_control->dereference[i] = talloc(dereference_control->dereference,
815 struct dsdb_openldap_dereference);
816 if (!dereference_control->dereference[i]) {
817 ldb_oom(ldb);
818 return LDB_ERR_OPERATIONS_ERROR;
819 }
820 dereference_control->dereference[i]->source_attribute = cur->lDAPDisplayName;
821 dereference_control->dereference[i]->dereference_attribute = attrs;
822 i++;
823 dereference_control->dereference[i] = NULL;
824 }
825 return LDB_SUCCESS;
826 }
827
828 static int extended_dn_out_openldap_init(struct ldb_module *module)
829 {
830 static const char *attrs[] = {
831 "entryUUID",
832 "objectSID",
833 NULL
834 };
835
836 return extended_dn_out_dereference_init(module, attrs);
837 }
838
839 static int extended_dn_out_fds_init(struct ldb_module *module)
840 {
841 static const char *attrs[] = {
842 "nsUniqueId",
843 "objectSID",
844 NULL
845 };
846
847 return extended_dn_out_dereference_init(module, attrs);
848 }
849
850 _PUBLIC_ const struct ldb_module_ops ldb_extended_dn_out_ldb_module_ops = {
851 .name = "extended_dn_out_ldb",
852 .search = extended_dn_out_ldb_search,
853 .init_context = extended_dn_out_ldb_init,
854 };
855
856 _PUBLIC_ const struct ldb_module_ops ldb_extended_dn_out_openldap_module_ops = {
857 .name = "extended_dn_out_openldap",
858 .search = extended_dn_out_openldap_search,
859 .init_context = extended_dn_out_openldap_init,
860 };
861
862 _PUBLIC_ const struct ldb_module_ops ldb_extended_dn_out_fds_module_ops = {
863 .name = "extended_dn_out_fds",
864 .search = extended_dn_out_fds_search,
865 .init_context = extended_dn_out_fds_init,
866 };
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