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s4/getncchanges: Don't mask Extended operation result - callers need it
[Samba.git] / source4 / rpc_server / drsuapi / getncchanges.c
blob907a508ceb946235155b7d076889b458912c4009
1 /*
2 Unix SMB/CIFS implementation.
3
4 implement the DSGetNCChanges call
5
6 Copyright (C) Anatoliy Atanasov 2009
7 Copyright (C) Andrew Tridgell 2009
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 #include "includes.h"
24 #include "rpc_server/dcerpc_server.h"
25 #include "dsdb/samdb/samdb.h"
26 #include "param/param.h"
27 #include "librpc/gen_ndr/ndr_drsblobs.h"
28 #include "librpc/gen_ndr/ndr_drsuapi.h"
29 #include "librpc/gen_ndr/ndr_security.h"
30 #include "libcli/security/security.h"
31 #include "libcli/security/session.h"
32 #include "rpc_server/drsuapi/dcesrv_drsuapi.h"
33 #include "rpc_server/dcerpc_server_proto.h"
34 #include "../libcli/drsuapi/drsuapi.h"
35 #include "lib/util/binsearch.h"
36 #include "lib/util/tsort.h"
37 #include "auth/session.h"
38 #include "dsdb/common/util.h"
39
40 /*
41 build a DsReplicaObjectIdentifier from a ldb msg
42 */
43 static struct drsuapi_DsReplicaObjectIdentifier *get_object_identifier(TALLOC_CTX *mem_ctx,
44 struct ldb_message *msg)
45 {
46 struct drsuapi_DsReplicaObjectIdentifier *identifier;
47 struct dom_sid *sid;
48
49 identifier = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
50 if (identifier == NULL) {
51 return NULL;
52 }
53
54 identifier->dn = ldb_dn_alloc_linearized(identifier, msg->dn);
55 identifier->guid = samdb_result_guid(msg, "objectGUID");
56
57 sid = samdb_result_dom_sid(identifier, msg, "objectSid");
58 if (sid) {
59 identifier->sid = *sid;
60 } else {
61 ZERO_STRUCT(identifier->sid);
62 }
63 return identifier;
64 }
65
66 static int udv_compare(const struct GUID *guid1, struct GUID guid2)
67 {
68 return GUID_compare(guid1, &guid2);
69 }
70
71 /*
72 see if we can filter an attribute using the uptodateness_vector
73 */
74 static bool udv_filter(const struct drsuapi_DsReplicaCursorCtrEx *udv,
75 const struct GUID *originating_invocation_id,
76 uint64_t originating_usn)
77 {
78 const struct drsuapi_DsReplicaCursor *c;
79 if (udv == NULL) return false;
80 BINARY_ARRAY_SEARCH(udv->cursors, udv->count, source_dsa_invocation_id,
81 originating_invocation_id, udv_compare, c);
82 if (c && originating_usn <= c->highest_usn) {
83 return true;
84 }
85 return false;
86
87 }
88
89 static int attid_cmp(enum drsuapi_DsAttributeId a1, enum drsuapi_DsAttributeId a2)
90 {
91 if (a1 == a2) return 0;
92 return ((uint32_t)a1) > ((uint32_t)a2) ? 1 : -1;
93 }
94
95 /*
96 check if an attribute is in a partial_attribute_set
97 */
98 static bool check_partial_attribute_set(const struct dsdb_attribute *sa,
99 struct drsuapi_DsPartialAttributeSet *pas)
100 {
101 enum drsuapi_DsAttributeId *result;
102 BINARY_ARRAY_SEARCH_V(pas->attids, pas->num_attids, (enum drsuapi_DsAttributeId)sa->attributeID_id,
103 attid_cmp, result);
104 return result != NULL;
105 }
106
107
108 /*
109 drsuapi_DsGetNCChanges for one object
110 */
111 static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItemEx *obj,
112 struct ldb_message *msg,
113 struct ldb_context *sam_ctx,
114 struct ldb_dn *ncRoot_dn,
115 bool is_schema_nc,
116 struct dsdb_schema *schema,
117 DATA_BLOB *session_key,
118 uint64_t highest_usn,
119 uint32_t replica_flags,
120 struct drsuapi_DsPartialAttributeSet *partial_attribute_set,
121 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector,
122 enum drsuapi_DsExtendedOperation extended_op)
123 {
124 const struct ldb_val *md_value;
125 uint32_t i, n;
126 struct replPropertyMetaDataBlob md;
127 uint32_t rid = 0;
128 enum ndr_err_code ndr_err;
129 uint32_t *attids;
130 const char *rdn;
131 const struct dsdb_attribute *rdn_sa;
132 unsigned int instanceType;
133 struct dsdb_syntax_ctx syntax_ctx;
134
135 /* make dsdb sytanx context for conversions */
136 dsdb_syntax_ctx_init(&syntax_ctx, sam_ctx, schema);
137 syntax_ctx.is_schema_nc = is_schema_nc;
138
139 instanceType = ldb_msg_find_attr_as_uint(msg, "instanceType", 0);
140 if (instanceType & INSTANCE_TYPE_IS_NC_HEAD) {
141 obj->is_nc_prefix = true;
142 obj->parent_object_guid = NULL;
143 } else {
144 obj->is_nc_prefix = false;
145 obj->parent_object_guid = talloc(obj, struct GUID);
146 if (obj->parent_object_guid == NULL) {
147 return WERR_DS_DRA_INTERNAL_ERROR;
148 }
149 *obj->parent_object_guid = samdb_result_guid(msg, "parentGUID");
150 if (GUID_all_zero(obj->parent_object_guid)) {
151 DEBUG(0,(__location__ ": missing parentGUID for %s\n",
152 ldb_dn_get_linearized(msg->dn)));
153 return WERR_DS_DRA_INTERNAL_ERROR;
154 }
155 }
156 obj->next_object = NULL;
157
158 md_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
159 if (!md_value) {
160 /* nothing to send */
161 return WERR_OK;
162 }
163
164 if (instanceType & INSTANCE_TYPE_UNINSTANT) {
165 /* don't send uninstantiated objects */
166 return WERR_OK;
167 }
168
169 ndr_err = ndr_pull_struct_blob(md_value, obj, &md,
170 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
171 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
172 return WERR_DS_DRA_INTERNAL_ERROR;
173 }
174
175 if (md.version != 1) {
176 return WERR_DS_DRA_INTERNAL_ERROR;
177 }
178
179 rdn = ldb_dn_get_rdn_name(msg->dn);
180 if (rdn == NULL) {
181 DEBUG(0,(__location__ ": No rDN for %s\n", ldb_dn_get_linearized(msg->dn)));
182 return WERR_DS_DRA_INTERNAL_ERROR;
183 }
184
185 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn);
186 if (rdn_sa == NULL) {
187 DEBUG(0,(__location__ ": Can't find dsds_attribute for rDN %s in %s\n",
188 rdn, ldb_dn_get_linearized(msg->dn)));
189 return WERR_DS_DRA_INTERNAL_ERROR;
190 }
191
192 obj->meta_data_ctr = talloc(obj, struct drsuapi_DsReplicaMetaDataCtr);
193 attids = talloc_array(obj, uint32_t, md.ctr.ctr1.count);
194
195 obj->object.identifier = get_object_identifier(obj, msg);
196 if (obj->object.identifier == NULL) {
197 return WERR_NOMEM;
198 }
199 dom_sid_split_rid(NULL, &obj->object.identifier->sid, NULL, &rid);
200
201 obj->meta_data_ctr->meta_data = talloc_array(obj, struct drsuapi_DsReplicaMetaData, md.ctr.ctr1.count);
202 for (n=i=0; i<md.ctr.ctr1.count; i++) {
203 const struct dsdb_attribute *sa;
204 bool force_attribute = false;
205
206 /* if the attribute has not changed, and it is not the
207 instanceType then don't include it */
208 if (md.ctr.ctr1.array[i].local_usn < highest_usn &&
209 extended_op != DRSUAPI_EXOP_REPL_SECRET &&
210 md.ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType) continue;
211
212 /* don't include the rDN */
213 if (md.ctr.ctr1.array[i].attid == rdn_sa->attributeID_id) continue;
214
215 sa = dsdb_attribute_by_attributeID_id(schema, md.ctr.ctr1.array[i].attid);
216 if (!sa) {
217 DEBUG(0,(__location__ ": Failed to find attribute in schema for attrid %u mentioned in replPropertyMetaData of %s\n",
218 (unsigned int)md.ctr.ctr1.array[i].attid,
219 ldb_dn_get_linearized(msg->dn)));
220 return WERR_DS_DRA_INTERNAL_ERROR;
221 }
222
223 if (sa->linkID) {
224 struct ldb_message_element *el;
225 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
226 if (el && el->num_values && dsdb_dn_is_upgraded_link_val(&el->values[0])) {
227 /* don't send upgraded links inline */
228 continue;
229 }
230 }
231
232 if (extended_op == DRSUAPI_EXOP_REPL_SECRET &&
233 !dsdb_attr_in_rodc_fas(sa)) {
234 force_attribute = true;
235 DEBUG(4,("Forcing attribute %s in %s\n",
236 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
237 }
238
239 /* filter by uptodateness_vector */
240 if (md.ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType &&
241 !force_attribute &&
242 udv_filter(uptodateness_vector,
243 &md.ctr.ctr1.array[i].originating_invocation_id,
244 md.ctr.ctr1.array[i].originating_usn)) {
245 continue;
246 }
247
248 /* filter by partial_attribute_set */
249 if (partial_attribute_set && !check_partial_attribute_set(sa, partial_attribute_set)) {
250 continue;
251 }
252
253 obj->meta_data_ctr->meta_data[n].originating_change_time = md.ctr.ctr1.array[i].originating_change_time;
254 obj->meta_data_ctr->meta_data[n].version = md.ctr.ctr1.array[i].version;
255 obj->meta_data_ctr->meta_data[n].originating_invocation_id = md.ctr.ctr1.array[i].originating_invocation_id;
256 obj->meta_data_ctr->meta_data[n].originating_usn = md.ctr.ctr1.array[i].originating_usn;
257 attids[n] = md.ctr.ctr1.array[i].attid;
258 n++;
259 }
260
261 /* ignore it if its an empty change. Note that renames always
262 * change the 'name' attribute, so they won't be ignored by
263 * this */
264 if (n == 0 ||
265 (n == 1 && attids[0] == DRSUAPI_ATTID_instanceType)) {
266 talloc_free(obj->meta_data_ctr);
267 obj->meta_data_ctr = NULL;
268 return WERR_OK;
269 }
270
271 obj->meta_data_ctr->count = n;
272
273 obj->object.flags = DRSUAPI_DS_REPLICA_OBJECT_FROM_MASTER;
274 obj->object.attribute_ctr.num_attributes = obj->meta_data_ctr->count;
275 obj->object.attribute_ctr.attributes = talloc_array(obj, struct drsuapi_DsReplicaAttribute,
276 obj->object.attribute_ctr.num_attributes);
277
278 /*
279 * Note that the meta_data array and the attributes array must
280 * be the same size and in the same order
281 */
282 for (i=0; i<obj->object.attribute_ctr.num_attributes; i++) {
283 struct ldb_message_element *el;
284 WERROR werr;
285 const struct dsdb_attribute *sa;
286
287 sa = dsdb_attribute_by_attributeID_id(schema, attids[i]);
288 if (!sa) {
289 DEBUG(0,("Unable to find attributeID %u in schema\n", attids[i]));
290 return WERR_DS_DRA_INTERNAL_ERROR;
291 }
292
293 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
294 if (el == NULL) {
295 /* this happens for attributes that have been removed */
296 DEBUG(5,("No element '%s' for attributeID %u in message\n",
297 sa->lDAPDisplayName, attids[i]));
298 ZERO_STRUCT(obj->object.attribute_ctr.attributes[i]);
299 obj->object.attribute_ctr.attributes[i].attid =
300 dsdb_attribute_get_attid(sa, syntax_ctx.is_schema_nc);
301 } else {
302 werr = sa->syntax->ldb_to_drsuapi(&syntax_ctx, sa, el, obj,
303 &obj->object.attribute_ctr.attributes[i]);
304 if (!W_ERROR_IS_OK(werr)) {
305 DEBUG(0,("Unable to convert %s to DRS object - %s\n",
306 sa->lDAPDisplayName, win_errstr(werr)));
307 return werr;
308 }
309 /* if DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING is set
310 * check if attribute is secret and send a null value
311 */
312 if (replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
313 drsuapi_process_secret_attribute(&obj->object.attribute_ctr.attributes[i],
314 &obj->meta_data_ctr->meta_data[i]);
315 }
316 /* some attributes needs to be encrypted
317 before being sent */
318 werr = drsuapi_encrypt_attribute(obj, session_key, rid,
319 &obj->object.attribute_ctr.attributes[i]);
320 if (!W_ERROR_IS_OK(werr)) {
321 DEBUG(0,("Unable to encrypt %s in DRS object - %s\n",
322 sa->lDAPDisplayName, win_errstr(werr)));
323 return werr;
324 }
325 }
326 }
327
328 return WERR_OK;
329 }
330
331
332 /*
333 add one linked attribute from an object to the list of linked
334 attributes in a getncchanges request
335 */
336 static WERROR get_nc_changes_add_la(TALLOC_CTX *mem_ctx,
337 struct ldb_context *sam_ctx,
338 const struct dsdb_schema *schema,
339 const struct dsdb_attribute *sa,
340 struct ldb_message *msg,
341 struct dsdb_dn *dsdb_dn,
342 struct drsuapi_DsReplicaLinkedAttribute **la_list,
343 uint32_t *la_count)
344 {
345 struct drsuapi_DsReplicaLinkedAttribute *la;
346 bool active;
347 NTSTATUS status;
348 WERROR werr;
349
350 (*la_list) = talloc_realloc(mem_ctx, *la_list, struct drsuapi_DsReplicaLinkedAttribute, (*la_count)+1);
351 W_ERROR_HAVE_NO_MEMORY(*la_list);
352
353 la = &(*la_list)[*la_count];
354
355 la->identifier = get_object_identifier(*la_list, msg);
356 W_ERROR_HAVE_NO_MEMORY(la->identifier);
357
358 active = (dsdb_dn_rmd_flags(dsdb_dn->dn) & DSDB_RMD_FLAG_DELETED) == 0;
359
360 la->attid = sa->attributeID_id;
361 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
362
363 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
364 if (!NT_STATUS_IS_OK(status)) {
365 return ntstatus_to_werror(status);
366 }
367 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
368 if (!NT_STATUS_IS_OK(status)) {
369 return ntstatus_to_werror(status);
370 }
371 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
372 if (!NT_STATUS_IS_OK(status)) {
373 return ntstatus_to_werror(status);
374 }
375 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
376 if (!NT_STATUS_IS_OK(status)) {
377 return ntstatus_to_werror(status);
378 }
379 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
380 if (!NT_STATUS_IS_OK(status)) {
381 return ntstatus_to_werror(status);
382 }
383
384 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
385 W_ERROR_NOT_OK_RETURN(werr);
386
387 (*la_count)++;
388 return WERR_OK;
389 }
390
391
392 /*
393 add linked attributes from an object to the list of linked
394 attributes in a getncchanges request
395 */
396 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
397 TALLOC_CTX *mem_ctx,
398 struct ldb_dn *ncRoot_dn,
399 struct dsdb_schema *schema,
400 uint64_t highest_usn,
401 uint32_t replica_flags,
402 struct ldb_message *msg,
403 struct drsuapi_DsReplicaLinkedAttribute **la_list,
404 uint32_t *la_count,
405 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
406 {
407 unsigned int i;
408 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
409 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
410
411 for (i=0; i<msg->num_elements; i++) {
412 struct ldb_message_element *el = &msg->elements[i];
413 const struct dsdb_attribute *sa;
414 unsigned int j;
415
416 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
417
418 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
419 /* we only want forward links */
420 continue;
421 }
422
423 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
424 /* its an old style link, it will have been
425 * sent in the main replication data */
426 continue;
427 }
428
429 for (j=0; j<el->num_values; j++) {
430 struct dsdb_dn *dsdb_dn;
431 uint64_t local_usn;
432 NTSTATUS status;
433 WERROR werr;
434
435 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
436 if (dsdb_dn == NULL) {
437 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
438 el->name, ldb_dn_get_linearized(msg->dn)));
439 talloc_free(tmp_ctx);
440 return WERR_DS_DRA_INTERNAL_ERROR;
441 }
442
443 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
444 if (!NT_STATUS_IS_OK(status)) {
445 /* this can happen for attributes
446 given to us with old style meta
447 data */
448 continue;
449 }
450
451 if (local_usn > uSNChanged) {
452 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
453 el->name, ldb_dn_get_linearized(msg->dn)));
454 talloc_free(tmp_ctx);
455 return WERR_DS_DRA_INTERNAL_ERROR;
456 }
457
458 if (local_usn < highest_usn) {
459 continue;
460 }
461
462 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
463 dsdb_dn, la_list, la_count);
464 if (!W_ERROR_IS_OK(werr)) {
465 talloc_free(tmp_ctx);
466 return werr;
467 }
468 }
469 }
470
471 talloc_free(tmp_ctx);
472 return WERR_OK;
473 }
474
475 /*
476 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
477 */
478 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
479 struct ldb_dn *ncRoot_dn,
480 struct drsuapi_DsReplicaCursor2CtrEx *udv)
481 {
482 int ret;
483
484 udv->version = 2;
485 udv->reserved1 = 0;
486 udv->reserved2 = 0;
487
488 ret = dsdb_load_udv_v2(sam_ctx, ncRoot_dn, udv, &udv->cursors, &udv->count);
489 if (ret != LDB_SUCCESS) {
490 DEBUG(0,(__location__ ": Failed to load UDV for %s - %s\n",
491 ldb_dn_get_linearized(ncRoot_dn), ldb_errstring(sam_ctx)));
492 return WERR_DS_DRA_INTERNAL_ERROR;
493 }
494
495 return WERR_OK;
496 }
497
498
499 /* comparison function for linked attributes - see CompareLinks() in
500 * MS-DRSR section 4.1.10.5.17 */
501 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
502 const struct drsuapi_DsReplicaLinkedAttribute *la2,
503 struct ldb_context *sam_ctx)
504 {
505 int c;
506 WERROR werr;
507 TALLOC_CTX *tmp_ctx;
508 const struct dsdb_schema *schema;
509 const struct dsdb_attribute *schema_attrib;
510 struct dsdb_dn *dn1, *dn2;
511 struct GUID guid1, guid2;
512 NTSTATUS status;
513
514 c = GUID_compare(&la1->identifier->guid,
515 &la2->identifier->guid);
516 if (c != 0) return c;
517
518 if (la1->attid != la2->attid) {
519 return la1->attid < la2->attid? -1:1;
520 }
521
522 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
523 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
524 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
525 }
526
527 /* we need to get the target GUIDs to compare */
528 tmp_ctx = talloc_new(sam_ctx);
529
530 schema = dsdb_get_schema(sam_ctx, tmp_ctx);
531 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
532
533 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
534 if (!W_ERROR_IS_OK(werr)) {
535 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
536 talloc_free(tmp_ctx);
537 return 0;
538 }
539
540 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
541 if (!W_ERROR_IS_OK(werr)) {
542 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
543 talloc_free(tmp_ctx);
544 return 0;
545 }
546
547 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
548 if (!NT_STATUS_IS_OK(status)) {
549 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
550 talloc_free(tmp_ctx);
551 return 0;
552 }
553 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
554 if (!NT_STATUS_IS_OK(status)) {
555 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
556 talloc_free(tmp_ctx);
557 return 0;
558 }
559
560 talloc_free(tmp_ctx);
561
562 return GUID_compare(&guid1, &guid2);
563 }
564
565
566 /*
567 sort the objects we send by tree order
568 */
569 static int site_res_cmp_parent_order(struct ldb_message **m1, struct ldb_message **m2)
570 {
571 return ldb_dn_compare((*m2)->dn, (*m1)->dn);
572 }
573
574 /*
575 sort the objects we send first by uSNChanged
576 */
577 static int site_res_cmp_usn_order(struct ldb_message **m1, struct ldb_message **m2)
578 {
579 unsigned usnchanged1, usnchanged2;
580 unsigned cn1, cn2;
581 cn1 = ldb_dn_get_comp_num((*m1)->dn);
582 cn2 = ldb_dn_get_comp_num((*m2)->dn);
583 if (cn1 != cn2) {
584 return cn1 > cn2 ? 1 : -1;
585 }
586 usnchanged1 = ldb_msg_find_attr_as_uint(*m1, "uSNChanged", 0);
587 usnchanged2 = ldb_msg_find_attr_as_uint(*m2, "uSNChanged", 0);
588 if (usnchanged1 == usnchanged2) {
589 return 0;
590 }
591 return usnchanged1 > usnchanged2 ? 1 : -1;
592 }
593
594
595 /*
596 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
597 */
598 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
599 TALLOC_CTX *mem_ctx,
600 struct drsuapi_DsGetNCChangesRequest10 *req10,
601 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
602 {
603 struct ldb_dn *rid_manager_dn, *fsmo_role_dn, *req_dn;
604 int ret;
605 struct ldb_context *ldb = b_state->sam_ctx;
606 struct ldb_result *ext_res;
607 struct ldb_dn *base_dn;
608 struct dsdb_fsmo_extended_op *exop;
609
610 /*
611 steps:
612 - verify that the DN being asked for is the RID Manager DN
613 - verify that we are the RID Manager
614 */
615
616 /* work out who is the RID Manager */
617 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
618 if (ret != LDB_SUCCESS) {
619 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s\n", ldb_errstring(ldb)));
620 return WERR_DS_DRA_INTERNAL_ERROR;
621 }
622
623 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
624 if (!ldb_dn_validate(req_dn) ||
625 ldb_dn_compare(req_dn, rid_manager_dn) != 0) {
626 /* that isn't the RID Manager DN */
627 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s\n",
628 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
629 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
630 return WERR_OK;
631 }
632
633 /* find the DN of the RID Manager */
634 ret = samdb_reference_dn(ldb, mem_ctx, rid_manager_dn, "fSMORoleOwner", &fsmo_role_dn);
635 if (ret != LDB_SUCCESS) {
636 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s\n",
637 ldb_errstring(ldb)));
638 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
639 return WERR_DS_DRA_INTERNAL_ERROR;
640 }
641
642 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
643 /* we're not the RID Manager - go away */
644 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
645 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
646 return WERR_OK;
647 }
648
649 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
650 W_ERROR_HAVE_NO_MEMORY(exop);
651
652 exop->fsmo_info = req10->fsmo_info;
653 exop->destination_dsa_guid = req10->destination_dsa_guid;
654
655 ret = ldb_transaction_start(ldb);
656 if (ret != LDB_SUCCESS) {
657 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
658 ldb_errstring(ldb)));
659 return WERR_DS_DRA_INTERNAL_ERROR;
660 }
661
662 /*
663 * FIXME (kim): this is a temp hack to return just few object,
664 * but not the whole domain NC.
665 * We should remove this hack and implement a 'scope'
666 * building function to return just the set of object
667 * documented for DRSUAPI_EXOP_FSMO_RID_ALLOC extended_op
668 */
669 ldb_sequence_number(ldb, LDB_SEQ_HIGHEST_SEQ, &req10->highwatermark.highest_usn);
670
671 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
672 if (ret != LDB_SUCCESS) {
673 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
674 ldb_errstring(ldb)));
675 ldb_transaction_cancel(ldb);
676 return WERR_DS_DRA_INTERNAL_ERROR;
677 }
678
679 ret = ldb_transaction_commit(ldb);
680 if (ret != LDB_SUCCESS) {
681 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
682 ldb_errstring(ldb)));
683 return WERR_DS_DRA_INTERNAL_ERROR;
684 }
685
686 talloc_free(ext_res);
687
688 base_dn = ldb_get_default_basedn(ldb);
689
690 DEBUG(2,("Allocated RID pool for server %s\n",
691 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
692
693 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
694
695 return WERR_OK;
696 }
697
698 /*
699 return an array of SIDs from a ldb_message given an attribute name
700 assumes the SIDs are in extended DN format
701 */
702 static WERROR samdb_result_sid_array_dn(struct ldb_context *sam_ctx,
703 struct ldb_message *msg,
704 TALLOC_CTX *mem_ctx,
705 const char *attr,
706 const struct dom_sid ***sids)
707 {
708 struct ldb_message_element *el;
709 unsigned int i;
710
711 el = ldb_msg_find_element(msg, attr);
712 if (!el) {
713 *sids = NULL;
714 return WERR_OK;
715 }
716
717 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
718 W_ERROR_HAVE_NO_MEMORY(*sids);
719
720 for (i=0; i<el->num_values; i++) {
721 struct ldb_dn *dn = ldb_dn_from_ldb_val(mem_ctx, sam_ctx, &el->values[i]);
722 NTSTATUS status;
723 struct dom_sid *sid;
724
725 sid = talloc(*sids, struct dom_sid);
726 W_ERROR_HAVE_NO_MEMORY(sid);
727 status = dsdb_get_extended_dn_sid(dn, sid, "SID");
728 if (!NT_STATUS_IS_OK(status)) {
729 return WERR_INTERNAL_DB_CORRUPTION;
730 }
731 (*sids)[i] = sid;
732 }
733 (*sids)[i] = NULL;
734
735 return WERR_OK;
736 }
737
738
739 /*
740 return an array of SIDs from a ldb_message given an attribute name
741 assumes the SIDs are in NDR form
742 */
743 static WERROR samdb_result_sid_array_ndr(struct ldb_context *sam_ctx,
744 struct ldb_message *msg,
745 TALLOC_CTX *mem_ctx,
746 const char *attr,
747 const struct dom_sid ***sids)
748 {
749 struct ldb_message_element *el;
750 unsigned int i;
751
752 el = ldb_msg_find_element(msg, attr);
753 if (!el) {
754 *sids = NULL;
755 return WERR_OK;
756 }
757
758 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
759 W_ERROR_HAVE_NO_MEMORY(*sids);
760
761 for (i=0; i<el->num_values; i++) {
762 enum ndr_err_code ndr_err;
763 struct dom_sid *sid;
764
765 sid = talloc(*sids, struct dom_sid);
766 W_ERROR_HAVE_NO_MEMORY(sid);
767
768 ndr_err = ndr_pull_struct_blob(&el->values[i], sid, sid,
769 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
770 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
771 return WERR_INTERNAL_DB_CORRUPTION;
772 }
773 (*sids)[i] = sid;
774 }
775 (*sids)[i] = NULL;
776
777 return WERR_OK;
778 }
779
780 /*
781 see if any SIDs in list1 are in list2
782 */
783 static bool sid_list_match(const struct dom_sid **list1, const struct dom_sid **list2)
784 {
785 unsigned int i, j;
786 /* do we ever have enough SIDs here to worry about O(n^2) ? */
787 for (i=0; list1[i]; i++) {
788 for (j=0; list2[j]; j++) {
789 if (dom_sid_equal(list1[i], list2[j])) {
790 return true;
791 }
792 }
793 }
794 return false;
795 }
796
797 /*
798 handle a DRSUAPI_EXOP_REPL_SECRET call
799 */
800 static WERROR getncchanges_repl_secret(struct drsuapi_bind_state *b_state,
801 TALLOC_CTX *mem_ctx,
802 struct drsuapi_DsGetNCChangesRequest10 *req10,
803 struct dom_sid *user_sid,
804 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
805 {
806 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
807 struct ldb_dn *obj_dn, *rodc_dn, *krbtgt_link_dn;
808 int ret;
809 const char *rodc_attrs[] = { "msDS-KrbTgtLink", "msDS-NeverRevealGroup", "msDS-RevealOnDemandGroup", NULL };
810 const char *obj_attrs[] = { "tokenGroups", "objectSid", "UserAccountControl", "msDS-KrbTgtLinkBL", NULL };
811 struct ldb_result *rodc_res, *obj_res;
812 const struct dom_sid **never_reveal_sids, **reveal_sids, **token_sids;
813 WERROR werr;
814
815 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_SECRET extended op on %s\n",
816 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
817
818 /*
819 * we need to work out if we will allow this RODC to
820 * replicate the secrets for this object
821 *
822 * see 4.1.10.5.14 GetRevealSecretsPolicyForUser for details
823 * of this function
824 */
825
826 if (b_state->sam_ctx_system == NULL) {
827 /* this operation needs system level access */
828 ctr6->extended_ret = DRSUAPI_EXOP_ERR_ACCESS_DENIED;
829 return WERR_DS_DRA_SOURCE_DISABLED;
830 }
831
832 obj_dn = drs_ObjectIdentifier_to_dn(mem_ctx, b_state->sam_ctx_system, ncRoot);
833 if (!ldb_dn_validate(obj_dn)) goto failed;
834
835 rodc_dn = ldb_dn_new_fmt(mem_ctx, b_state->sam_ctx_system, "<SID=%s>",
836 dom_sid_string(mem_ctx, user_sid));
837 if (!ldb_dn_validate(rodc_dn)) goto failed;
838
839 /* do the two searches we need */
840 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &rodc_res, rodc_dn, rodc_attrs,
841 DSDB_SEARCH_SHOW_EXTENDED_DN);
842 if (ret != LDB_SUCCESS || rodc_res->count != 1) goto failed;
843
844 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &obj_res, obj_dn, obj_attrs, 0);
845 if (ret != LDB_SUCCESS || obj_res->count != 1) goto failed;
846
847 /* if the object SID is equal to the user_sid, allow */
848 if (dom_sid_equal(user_sid,
849 samdb_result_dom_sid(mem_ctx, obj_res->msgs[0], "objectSid"))) {
850 goto allowed;
851 }
852
853 /* an RODC is allowed to get its own krbtgt account secrets */
854 krbtgt_link_dn = samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
855 rodc_res->msgs[0], "msDS-KrbTgtLink", NULL);
856 if (krbtgt_link_dn != NULL &&
857 ldb_dn_compare(obj_dn, krbtgt_link_dn) == 0) {
858 goto allowed;
859 }
860
861 /* but it isn't allowed to get anyone elses krbtgt secrets */
862 if (samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
863 obj_res->msgs[0], "msDS-KrbTgtLinkBL", NULL)) {
864 goto denied;
865 }
866
867 if (ldb_msg_find_attr_as_uint(obj_res->msgs[0],
868 "userAccountControl", 0) &
869 UF_INTERDOMAIN_TRUST_ACCOUNT) {
870 goto denied;
871 }
872
873 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
874 mem_ctx, "msDS-NeverRevealGroup", &never_reveal_sids);
875 if (!W_ERROR_IS_OK(werr)) {
876 goto denied;
877 }
878
879 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
880 mem_ctx, "msDS-RevealOnDemandGroup", &reveal_sids);
881 if (!W_ERROR_IS_OK(werr)) {
882 goto denied;
883 }
884
885 werr = samdb_result_sid_array_ndr(b_state->sam_ctx_system, obj_res->msgs[0],
886 mem_ctx, "tokenGroups", &token_sids);
887 if (!W_ERROR_IS_OK(werr) || token_sids==NULL) {
888 goto denied;
889 }
890
891 if (never_reveal_sids &&
892 sid_list_match(token_sids, never_reveal_sids)) {
893 goto denied;
894 }
895
896 if (reveal_sids &&
897 sid_list_match(token_sids, reveal_sids)) {
898 goto allowed;
899 }
900
901 /* default deny */
902 denied:
903 DEBUG(2,(__location__ ": Denied RODC secret replication for %s by RODC %s\n",
904 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
905 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
906 return WERR_DS_DRA_ACCESS_DENIED;
907
908 allowed:
909 DEBUG(2,(__location__ ": Allowed RODC secret replication for %s by RODC %s\n",
910 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
911 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
912 req10->highwatermark.highest_usn = 0;
913 return WERR_OK;
914
915 failed:
916 DEBUG(2,(__location__ ": Failed RODC secret replication for %s by RODC %s\n",
917 ldb_dn_get_linearized(obj_dn), dom_sid_string(mem_ctx, user_sid)));
918 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
919 return WERR_DS_DRA_BAD_DN;
920 }
921
922
923 /*
924 handle a DRSUAPI_EXOP_REPL_OBJ call
925 */
926 static WERROR getncchanges_repl_obj(struct drsuapi_bind_state *b_state,
927 TALLOC_CTX *mem_ctx,
928 struct drsuapi_DsGetNCChangesRequest10 *req10,
929 struct dom_sid *user_sid,
930 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
931 {
932 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
933
934 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_OBJ extended op on %s\n",
935 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
936
937 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
938 req10->highwatermark.highest_usn = 0;
939 return WERR_OK;
940 }
941
942
943 /*
944 handle DRSUAPI_EXOP_FSMO_REQ_ROLE,
945 DRSUAPI_EXOP_FSMO_RID_REQ_ROLE,
946 and DRSUAPI_EXOP_FSMO_REQ_PDC calls
947 */
948 static WERROR getncchanges_change_master(struct drsuapi_bind_state *b_state,
949 TALLOC_CTX *mem_ctx,
950 struct drsuapi_DsGetNCChangesRequest10 *req10,
951 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
952 {
953 struct ldb_dn *fsmo_role_dn, *req_dn, *ntds_dn;
954 int ret;
955 unsigned int i;
956 struct ldb_context *ldb = b_state->sam_ctx;
957 struct ldb_message *msg;
958
959 /*
960 steps:
961 - verify that the client dn exists
962 - verify that we are the current master
963 */
964
965 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
966 if (!ldb_dn_validate(req_dn)) {
967 /* that is not a valid dn */
968 DEBUG(0,(__location__ ": FSMO role transfer request for invalid DN %s\n",
969 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
970 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
971 return WERR_OK;
972 }
973
974 /* retrieve the current role owner */
975 ret = samdb_reference_dn(ldb, mem_ctx, req_dn, "fSMORoleOwner", &fsmo_role_dn);
976 if (ret != LDB_SUCCESS) {
977 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in context - %s\n",
978 ldb_errstring(ldb)));
979 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
980 return WERR_DS_DRA_INTERNAL_ERROR;
981 }
982
983 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
984 /* we're not the current owner - go away */
985 DEBUG(0,(__location__ ": FSMO transfer request when not owner\n"));
986 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
987 return WERR_OK;
988 }
989
990 /* change the current master */
991 msg = ldb_msg_new(ldb);
992 W_ERROR_HAVE_NO_MEMORY(msg);
993 msg->dn = drs_ObjectIdentifier_to_dn(msg, ldb, req10->naming_context);
994 W_ERROR_HAVE_NO_MEMORY(msg->dn);
995
996 /* TODO: make sure ntds_dn is a valid nTDSDSA object */
997 ret = dsdb_find_dn_by_guid(ldb, msg, &req10->destination_dsa_guid, &ntds_dn);
998 if (ret != LDB_SUCCESS) {
999 DEBUG(0, (__location__ ": Unable to find NTDS object for guid %s - %s\n",
1000 GUID_string(mem_ctx, &req10->destination_dsa_guid), ldb_errstring(ldb)));
1001 talloc_free(msg);
1002 ctr6->extended_ret = DRSUAPI_EXOP_ERR_UNKNOWN_CALLER;
1003 return WERR_OK;
1004 }
1005
1006 ret = ldb_msg_add_string(msg, "fSMORoleOwner", ldb_dn_get_linearized(ntds_dn));
1007 if (ret != 0) {
1008 talloc_free(msg);
1009 return WERR_DS_DRA_INTERNAL_ERROR;
1010 }
1011
1012 for (i=0;i<msg->num_elements;i++) {
1013 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
1014 }
1015
1016 ret = ldb_transaction_start(ldb);
1017 if (ret != LDB_SUCCESS) {
1018 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
1019 ldb_errstring(ldb)));
1020 return WERR_DS_DRA_INTERNAL_ERROR;
1021 }
1022
1023 ret = ldb_modify(ldb, msg);
1024 if (ret != LDB_SUCCESS) {
1025 DEBUG(0,(__location__ ": Failed to change current owner - %s\n",
1026 ldb_errstring(ldb)));
1027 ldb_transaction_cancel(ldb);
1028 return WERR_DS_DRA_INTERNAL_ERROR;
1029 }
1030
1031 ret = ldb_transaction_commit(ldb);
1032 if (ret != LDB_SUCCESS) {
1033 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
1034 ldb_errstring(ldb)));
1035 return WERR_DS_DRA_INTERNAL_ERROR;
1036 }
1037
1038 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1039
1040 return WERR_OK;
1041 }
1042
1043 /* state of a partially completed getncchanges call */
1044 struct drsuapi_getncchanges_state {
1045 struct GUID *guids;
1046 uint32_t num_records;
1047 uint32_t num_processed;
1048 struct ldb_dn *ncRoot_dn;
1049 bool is_schema_nc;
1050 uint64_t min_usn;
1051 uint64_t highest_usn;
1052 struct ldb_dn *last_dn;
1053 struct drsuapi_DsReplicaLinkedAttribute *la_list;
1054 uint32_t la_count;
1055 bool la_sorted;
1056 uint32_t la_idx;
1057 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector;
1058 };
1059
1060 /*
1061 see if this getncchanges request includes a request to reveal secret information
1062 */
1063 static WERROR dcesrv_drsuapi_is_reveal_secrets_request(struct drsuapi_bind_state *b_state,
1064 struct drsuapi_DsGetNCChangesRequest10 *req10,
1065 bool *is_secret_request)
1066 {
1067 enum drsuapi_DsExtendedOperation exop;
1068 uint32_t i;
1069 struct dsdb_schema *schema;
1070
1071 *is_secret_request = true;
1072
1073 exop = req10->extended_op;
1074
1075 switch (exop) {
1076 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1077 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1078 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1079 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1080 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1081 /* FSMO exops can reveal secrets */
1082 *is_secret_request = true;
1083 return WERR_OK;
1084 case DRSUAPI_EXOP_REPL_SECRET:
1085 case DRSUAPI_EXOP_REPL_OBJ:
1086 case DRSUAPI_EXOP_NONE:
1087 break;
1088 }
1089
1090 if (req10->replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
1091 *is_secret_request = false;
1092 return WERR_OK;
1093 }
1094
1095 if (exop == DRSUAPI_EXOP_REPL_SECRET ||
1096 req10->partial_attribute_set == NULL) {
1097 /* they want secrets */
1098 *is_secret_request = true;
1099 return WERR_OK;
1100 }
1101
1102 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1103
1104 /* check the attributes they asked for */
1105 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1106 const struct dsdb_attribute *sa;
1107 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1108 if (sa == NULL) {
1109 return WERR_DS_DRA_SCHEMA_MISMATCH;
1110 }
1111 if (!dsdb_attr_in_rodc_fas(sa)) {
1112 *is_secret_request = true;
1113 return WERR_OK;
1114 }
1115 }
1116
1117 /* check the attributes they asked for */
1118 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1119 const struct dsdb_attribute *sa;
1120 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1121 if (sa == NULL) {
1122 return WERR_DS_DRA_SCHEMA_MISMATCH;
1123 }
1124 if (!dsdb_attr_in_rodc_fas(sa)) {
1125 *is_secret_request = true;
1126 return WERR_OK;
1127 }
1128 }
1129
1130 *is_secret_request = false;
1131 return WERR_OK;
1132 }
1133
1134
1135 /*
1136 map from req8 to req10
1137 */
1138 static struct drsuapi_DsGetNCChangesRequest10 *
1139 getncchanges_map_req8(TALLOC_CTX *mem_ctx,
1140 struct drsuapi_DsGetNCChangesRequest8 *req8)
1141 {
1142 struct drsuapi_DsGetNCChangesRequest10 *req10 = talloc_zero(mem_ctx,
1143 struct drsuapi_DsGetNCChangesRequest10);
1144 if (req10 == NULL) {
1145 return NULL;
1146 }
1147
1148 req10->destination_dsa_guid = req8->destination_dsa_guid;
1149 req10->source_dsa_invocation_id = req8->source_dsa_invocation_id;
1150 req10->naming_context = req8->naming_context;
1151 req10->highwatermark = req8->highwatermark;
1152 req10->uptodateness_vector = req8->uptodateness_vector;
1153 req10->replica_flags = req8->replica_flags;
1154 req10->max_object_count = req8->max_object_count;
1155 req10->max_ndr_size = req8->max_ndr_size;
1156 req10->extended_op = req8->extended_op;
1157 req10->fsmo_info = req8->fsmo_info;
1158 req10->partial_attribute_set = req8->partial_attribute_set;
1159 req10->partial_attribute_set_ex = req8->partial_attribute_set_ex;
1160 req10->mapping_ctr = req8->mapping_ctr;
1161
1162 return req10;
1163 }
1164
1165
1166 /*
1167 drsuapi_DsGetNCChanges
1168
1169 see MS-DRSR 4.1.10.5.2 for basic logic of this function
1170 */
1171 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
1172 struct drsuapi_DsGetNCChanges *r)
1173 {
1174 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
1175 int ret;
1176 uint32_t i;
1177 struct dsdb_schema *schema;
1178 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
1179 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
1180 NTSTATUS status;
1181 DATA_BLOB session_key;
1182 const char *attrs[] = { "uSNChanged",
1183 "objectGUID" ,
1184 NULL };
1185 WERROR werr;
1186 struct dcesrv_handle *h;
1187 struct drsuapi_bind_state *b_state;
1188 struct drsuapi_getncchanges_state *getnc_state;
1189 struct drsuapi_DsGetNCChangesRequest10 *req10;
1190 uint32_t options;
1191 uint32_t max_objects;
1192 uint32_t max_links;
1193 uint32_t link_count = 0;
1194 uint32_t link_total = 0;
1195 uint32_t link_given = 0;
1196 struct ldb_dn *search_dn = NULL;
1197 bool am_rodc, null_scope=false;
1198 enum security_user_level security_level;
1199 struct ldb_context *sam_ctx;
1200 struct dom_sid *user_sid;
1201 bool is_secret_request;
1202
1203 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
1204 b_state = h->data;
1205
1206 sam_ctx = b_state->sam_ctx_system?b_state->sam_ctx_system:b_state->sam_ctx;
1207
1208 *r->out.level_out = 6;
1209 /* TODO: linked attributes*/
1210 r->out.ctr->ctr6.linked_attributes_count = 0;
1211 r->out.ctr->ctr6.linked_attributes = NULL;
1212
1213 r->out.ctr->ctr6.object_count = 0;
1214 r->out.ctr->ctr6.nc_object_count = 0;
1215 r->out.ctr->ctr6.more_data = false;
1216 r->out.ctr->ctr6.uptodateness_vector = NULL;
1217
1218 /* a RODC doesn't allow for any replication */
1219 ret = samdb_rodc(sam_ctx, &am_rodc);
1220 if (ret == LDB_SUCCESS && am_rodc) {
1221 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
1222 return WERR_DS_DRA_SOURCE_DISABLED;
1223 }
1224
1225 /* Check request revision.
1226 */
1227 switch (r->in.level) {
1228 case 8:
1229 req10 = getncchanges_map_req8(mem_ctx, &r->in.req->req8);
1230 if (req10 == NULL) {
1231 return WERR_NOMEM;
1232 }
1233 break;
1234 case 10:
1235 req10 = &r->in.req->req10;
1236 break;
1237 default:
1238 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
1239 r->in.level));
1240 return WERR_REVISION_MISMATCH;
1241 }
1242
1243
1244 /* Perform access checks. */
1245 /* TODO: we need to support a sync on a specific non-root
1246 * DN. We'll need to find the real partition root here */
1247 ncRoot = req10->naming_context;
1248 if (ncRoot == NULL) {
1249 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
1250 return WERR_DS_DRA_INVALID_PARAMETER;
1251 }
1252
1253 if (samdb_ntds_options(sam_ctx, &options) != LDB_SUCCESS) {
1254 return WERR_DS_DRA_INTERNAL_ERROR;
1255 }
1256
1257 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
1258 !(req10->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
1259 return WERR_DS_DRA_SOURCE_DISABLED;
1260 }
1261
1262 user_sid = &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
1263
1264 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1265 mem_ctx,
1266 dce_call->conn->auth_state.session_info->security_token,
1267 req10->naming_context,
1268 GUID_DRS_GET_CHANGES);
1269 if (!W_ERROR_IS_OK(werr)) {
1270 return werr;
1271 }
1272
1273 werr = dcesrv_drsuapi_is_reveal_secrets_request(b_state, req10, &is_secret_request);
1274 if (!W_ERROR_IS_OK(werr)) {
1275 return werr;
1276 }
1277 if (is_secret_request && req10->extended_op != DRSUAPI_EXOP_REPL_SECRET) {
1278 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1279 mem_ctx,
1280 dce_call->conn->auth_state.session_info->security_token,
1281 req10->naming_context,
1282 GUID_DRS_GET_ALL_CHANGES);
1283 if (!W_ERROR_IS_OK(werr)) {
1284 return werr;
1285 }
1286 }
1287
1288 /* for non-administrator replications, check that they have
1289 given the correct source_dsa_invocation_id */
1290 security_level = security_session_user_level(dce_call->conn->auth_state.session_info,
1291 samdb_domain_sid(sam_ctx));
1292 if (security_level == SECURITY_RO_DOMAIN_CONTROLLER) {
1293 if (req10->replica_flags & DRSUAPI_DRS_WRIT_REP) {
1294 /* we rely on this flag being unset for RODC requests */
1295 req10->replica_flags &= ~DRSUAPI_DRS_WRIT_REP;
1296 }
1297 }
1298
1299 if (req10->replica_flags & DRSUAPI_DRS_FULL_SYNC_PACKET) {
1300 /* Ignore the _in_ uptpdateness vector*/
1301 req10->uptodateness_vector = NULL;
1302 }
1303
1304 getnc_state = b_state->getncchanges_state;
1305
1306 /* see if a previous replication has been abandoned */
1307 if (getnc_state) {
1308 struct ldb_dn *new_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1309 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
1310 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
1311 ldb_dn_get_linearized(new_dn),
1312 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
1313 ldb_dn_get_linearized(getnc_state->last_dn)));
1314 talloc_free(getnc_state);
1315 getnc_state = NULL;
1316 }
1317 }
1318
1319 if (getnc_state == NULL) {
1320 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
1321 if (getnc_state == NULL) {
1322 return WERR_NOMEM;
1323 }
1324 b_state->getncchanges_state = getnc_state;
1325 getnc_state->ncRoot_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1326
1327 /* find out if we are to replicate Schema NC */
1328 ret = ldb_dn_compare(getnc_state->ncRoot_dn,
1329 ldb_get_schema_basedn(b_state->sam_ctx));
1330 getnc_state->is_schema_nc = (0 == ret);
1331
1332 /*
1333 * This is the first replication cycle and it is
1334 * a good place to handle extended operations
1335 *
1336 * FIXME: we don't fully support extended operations yet
1337 */
1338 switch (req10->extended_op) {
1339 case DRSUAPI_EXOP_NONE:
1340 break;
1341 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1342 werr = getncchanges_rid_alloc(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1343 W_ERROR_NOT_OK_RETURN(werr);
1344 search_dn = ldb_get_default_basedn(sam_ctx);
1345 break;
1346 case DRSUAPI_EXOP_REPL_SECRET:
1347 werr = getncchanges_repl_secret(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1348 r->out.result = werr;
1349 W_ERROR_NOT_OK_RETURN(werr);
1350 break;
1351 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1352 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1353 W_ERROR_NOT_OK_RETURN(werr);
1354 break;
1355 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1356 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1357 W_ERROR_NOT_OK_RETURN(werr);
1358 break;
1359 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1360 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1361 W_ERROR_NOT_OK_RETURN(werr);
1362 break;
1363 case DRSUAPI_EXOP_REPL_OBJ:
1364 werr = getncchanges_repl_obj(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1365 r->out.result = werr;
1366 W_ERROR_NOT_OK_RETURN(werr);
1367 break;
1368
1369 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1370
1371 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
1372 (unsigned)req10->extended_op));
1373 return WERR_DS_DRA_NOT_SUPPORTED;
1374 }
1375 }
1376
1377 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
1378 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
1379 DEBUG(0,(__location__ ": Bad DN '%s'\n",
1380 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1381 return WERR_DS_DRA_INVALID_PARAMETER;
1382 }
1383
1384 /* we need the session key for encrypting password attributes */
1385 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
1386 if (!NT_STATUS_IS_OK(status)) {
1387 DEBUG(0,(__location__ ": Failed to get session key\n"));
1388 return WERR_DS_DRA_INTERNAL_ERROR;
1389 }
1390
1391 /*
1392 TODO: MS-DRSR section 4.1.10.1.1
1393 Work out if this is the start of a new cycle */
1394
1395 if (getnc_state->guids == NULL) {
1396 char* search_filter;
1397 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
1398 const char *extra_filter;
1399 struct ldb_result *search_res;
1400
1401 if (req10->extended_op == DRSUAPI_EXOP_REPL_OBJ ||
1402 req10->extended_op == DRSUAPI_EXOP_REPL_SECRET) {
1403 scope = LDB_SCOPE_BASE;
1404 }
1405
1406 extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1407
1408 getnc_state->min_usn = req10->highwatermark.highest_usn;
1409
1410 /* Construct response. */
1411 search_filter = talloc_asprintf(mem_ctx,
1412 "(uSNChanged>=%llu)",
1413 (unsigned long long)(getnc_state->min_usn+1));
1414
1415 if (extra_filter) {
1416 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
1417 }
1418
1419 if (req10->replica_flags & DRSUAPI_DRS_CRITICAL_ONLY) {
1420 search_filter = talloc_asprintf(mem_ctx,
1421 "(&%s(isCriticalSystemObject=TRUE))",
1422 search_filter);
1423 }
1424
1425 if (req10->replica_flags & DRSUAPI_DRS_ASYNC_REP) {
1426 scope = LDB_SCOPE_BASE;
1427 }
1428
1429 if (!search_dn) {
1430 search_dn = getnc_state->ncRoot_dn;
1431 }
1432
1433 DEBUG(2,(__location__ ": getncchanges on %s using filter %s\n",
1434 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
1435 ret = drsuapi_search_with_extended_dn(sam_ctx, getnc_state, &search_res,
1436 search_dn, scope, attrs,
1437 search_filter);
1438 if (ret != LDB_SUCCESS) {
1439 return WERR_DS_DRA_INTERNAL_ERROR;
1440 }
1441
1442 if (req10->replica_flags & DRSUAPI_DRS_GET_ANC) {
1443 TYPESAFE_QSORT(search_res->msgs,
1444 search_res->count,
1445 site_res_cmp_parent_order);
1446 } else {
1447 TYPESAFE_QSORT(search_res->msgs,
1448 search_res->count,
1449 site_res_cmp_usn_order);
1450 }
1451
1452 /* extract out the GUIDs list */
1453 getnc_state->num_records = search_res->count;
1454 getnc_state->guids = talloc_array(getnc_state, struct GUID, getnc_state->num_records);
1455 W_ERROR_HAVE_NO_MEMORY(getnc_state->guids);
1456
1457 for (i=0; i<getnc_state->num_records; i++) {
1458 getnc_state->guids[i] = samdb_result_guid(search_res->msgs[i], "objectGUID");
1459 if (GUID_all_zero(&getnc_state->guids[i])) {
1460 DEBUG(2,("getncchanges: bad objectGUID from %s\n", ldb_dn_get_linearized(search_res->msgs[i]->dn)));
1461 return WERR_DS_DRA_INTERNAL_ERROR;
1462 }
1463 }
1464
1465
1466 talloc_free(search_res);
1467
1468 getnc_state->uptodateness_vector = talloc_steal(getnc_state, req10->uptodateness_vector);
1469 if (getnc_state->uptodateness_vector) {
1470 /* make sure its sorted */
1471 TYPESAFE_QSORT(getnc_state->uptodateness_vector->cursors,
1472 getnc_state->uptodateness_vector->count,
1473 drsuapi_DsReplicaCursor_compare);
1474 }
1475 }
1476
1477 /* Prefix mapping */
1478 schema = dsdb_get_schema(sam_ctx, mem_ctx);
1479 if (!schema) {
1480 DEBUG(0,("No schema in sam_ctx\n"));
1481 return WERR_DS_DRA_INTERNAL_ERROR;
1482 }
1483
1484 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
1485 *r->out.ctr->ctr6.naming_context = *ncRoot;
1486
1487 if (dsdb_find_guid_by_dn(sam_ctx, getnc_state->ncRoot_dn,
1488 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
1489 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
1490 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
1491 return WERR_DS_DRA_INTERNAL_ERROR;
1492 }
1493
1494 /* find the SID if there is one */
1495 dsdb_find_sid_by_dn(sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
1496
1497 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
1498 r->out.ctr->ctr6.mapping_ctr = *ctr;
1499
1500 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(sam_ctx));
1501 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(sam_ctx));
1502
1503 r->out.ctr->ctr6.old_highwatermark = req10->highwatermark;
1504 r->out.ctr->ctr6.new_highwatermark = req10->highwatermark;
1505
1506 r->out.ctr->ctr6.first_object = NULL;
1507 currentObject = &r->out.ctr->ctr6.first_object;
1508
1509 /* use this to force single objects at a time, which is useful
1510 * for working out what object is giving problems
1511 */
1512 max_objects = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
1513 if (req10->max_object_count < max_objects) {
1514 max_objects = req10->max_object_count;
1515 }
1516 /*
1517 * TODO: work out how the maximum should be calculated
1518 */
1519 max_links = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max link sync", 1500);
1520
1521 for (i=getnc_state->num_processed;
1522 i<getnc_state->num_records &&
1523 !null_scope &&
1524 (r->out.ctr->ctr6.object_count < max_objects);
1525 i++) {
1526 int uSN;
1527 struct drsuapi_DsReplicaObjectListItemEx *obj;
1528 struct ldb_message *msg;
1529 static const char * const msg_attrs[] = {
1530 "*",
1531 "nTSecurityDescriptor",
1532 "parentGUID",
1533 "replPropertyMetaData",
1534 DSDB_SECRET_ATTRIBUTES,
1535 NULL };
1536 struct ldb_result *msg_res;
1537 struct ldb_dn *msg_dn;
1538
1539 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
1540 W_ERROR_HAVE_NO_MEMORY(obj);
1541
1542 msg_dn = ldb_dn_new_fmt(obj, sam_ctx, "<GUID=%s>", GUID_string(obj, &getnc_state->guids[i]));
1543 W_ERROR_HAVE_NO_MEMORY(msg_dn);
1544
1545
1546 /* by re-searching here we avoid having a lot of full
1547 * records in memory between calls to getncchanges
1548 */
1549 ret = drsuapi_search_with_extended_dn(sam_ctx, obj, &msg_res,
1550 msg_dn,
1551 LDB_SCOPE_BASE, msg_attrs, NULL);
1552 if (ret != LDB_SUCCESS) {
1553 if (ret != LDB_ERR_NO_SUCH_OBJECT) {
1554 DEBUG(1,("getncchanges: failed to fetch DN %s - %s\n",
1555 ldb_dn_get_extended_linearized(obj, msg_dn, 1), ldb_errstring(sam_ctx)));
1556 }
1557 talloc_free(obj);
1558 continue;
1559 }
1560
1561 msg = msg_res->msgs[0];
1562
1563 werr = get_nc_changes_build_object(obj, msg,
1564 sam_ctx, getnc_state->ncRoot_dn,
1565 getnc_state->is_schema_nc,
1566 schema, &session_key, getnc_state->min_usn,
1567 req10->replica_flags,
1568 req10->partial_attribute_set,
1569 getnc_state->uptodateness_vector,
1570 req10->extended_op);
1571 if (!W_ERROR_IS_OK(werr)) {
1572 return werr;
1573 }
1574
1575 werr = get_nc_changes_add_links(sam_ctx, getnc_state,
1576 getnc_state->ncRoot_dn,
1577 schema, getnc_state->min_usn,
1578 req10->replica_flags,
1579 msg,
1580 &getnc_state->la_list,
1581 &getnc_state->la_count,
1582 getnc_state->uptodateness_vector);
1583 if (!W_ERROR_IS_OK(werr)) {
1584 return werr;
1585 }
1586
1587 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
1588 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
1589 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
1590 }
1591 if (uSN > getnc_state->highest_usn) {
1592 getnc_state->highest_usn = uSN;
1593 }
1594
1595 if (obj->meta_data_ctr == NULL) {
1596 DEBUG(8,(__location__ ": getncchanges skipping send of object %s\n",
1597 ldb_dn_get_linearized(msg->dn)));
1598 /* no attributes to send */
1599 talloc_free(obj);
1600 continue;
1601 }
1602
1603 r->out.ctr->ctr6.object_count++;
1604
1605 *currentObject = obj;
1606 currentObject = &obj->next_object;
1607
1608 talloc_free(getnc_state->last_dn);
1609 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
1610
1611 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
1612
1613 talloc_free(msg_res);
1614 talloc_free(msg_dn);
1615 }
1616
1617 getnc_state->num_processed = i;
1618
1619 r->out.ctr->ctr6.nc_object_count = getnc_state->num_records;
1620
1621 /* the client can us to call UpdateRefs on its behalf to
1622 re-establish monitoring of the NC */
1623 if ((req10->replica_flags & (DRSUAPI_DRS_ADD_REF | DRSUAPI_DRS_REF_GCSPN)) &&
1624 !GUID_all_zero(&req10->destination_dsa_guid)) {
1625 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
1626 DEBUG(3,("UpdateRefs on getncchanges for %s\n",
1627 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
1628 ureq.naming_context = ncRoot;
1629 ureq.dest_dsa_dns_name = talloc_asprintf(mem_ctx, "%s._msdcs.%s",
1630 GUID_string(mem_ctx, &req10->destination_dsa_guid),
1631 lpcfg_dnsdomain(dce_call->conn->dce_ctx->lp_ctx));
1632 if (!ureq.dest_dsa_dns_name) {
1633 return WERR_NOMEM;
1634 }
1635 ureq.dest_dsa_guid = req10->destination_dsa_guid;
1636 ureq.options = DRSUAPI_DRS_ADD_REF |
1637 DRSUAPI_DRS_ASYNC_OP |
1638 DRSUAPI_DRS_GETCHG_CHECK;
1639
1640 /* we also need to pass through the
1641 DRSUAPI_DRS_REF_GCSPN bit so that repsTo gets flagged
1642 to send notifies using the GC SPN */
1643 ureq.options |= (req10->replica_flags & DRSUAPI_DRS_REF_GCSPN);
1644
1645 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
1646 if (!W_ERROR_IS_OK(werr)) {
1647 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
1648 win_errstr(werr)));
1649 }
1650 }
1651
1652 /*
1653 * TODO:
1654 * This is just a guess, how to calculate the
1655 * number of linked attributes to send, we need to
1656 * find out how to do this right.
1657 */
1658 if (r->out.ctr->ctr6.object_count >= max_links) {
1659 max_links = 0;
1660 } else {
1661 max_links -= r->out.ctr->ctr6.object_count;
1662 }
1663
1664 link_total = getnc_state->la_count;
1665
1666 if (i < getnc_state->num_records) {
1667 r->out.ctr->ctr6.more_data = true;
1668 } else {
1669 /* sort the whole array the first time */
1670 if (!getnc_state->la_sorted) {
1671 LDB_TYPESAFE_QSORT(getnc_state->la_list, getnc_state->la_count,
1672 sam_ctx, linked_attribute_compare);
1673 getnc_state->la_sorted = true;
1674 }
1675
1676 link_count = getnc_state->la_count - getnc_state->la_idx;
1677 link_count = MIN(max_links, link_count);
1678
1679 r->out.ctr->ctr6.linked_attributes_count = link_count;
1680 r->out.ctr->ctr6.linked_attributes = getnc_state->la_list + getnc_state->la_idx;
1681
1682 getnc_state->la_idx += link_count;
1683 link_given = getnc_state->la_idx;
1684
1685 if (getnc_state->la_idx < getnc_state->la_count) {
1686 r->out.ctr->ctr6.more_data = true;
1687 }
1688 }
1689
1690 if (!r->out.ctr->ctr6.more_data) {
1691 talloc_steal(mem_ctx, getnc_state->la_list);
1692
1693 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1694 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1695
1696 werr = get_nc_changes_udv(sam_ctx, getnc_state->ncRoot_dn,
1697 r->out.ctr->ctr6.uptodateness_vector);
1698 if (!W_ERROR_IS_OK(werr)) {
1699 return werr;
1700 }
1701
1702 talloc_free(getnc_state);
1703 b_state->getncchanges_state = NULL;
1704 }
1705
1706 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1707 r->out.ctr->ctr6.uptodateness_vector = NULL;
1708 r->out.ctr->ctr6.nc_object_count = 0;
1709 ZERO_STRUCT(r->out.ctr->ctr6.new_highwatermark);
1710 }
1711
1712 DEBUG(r->out.ctr->ctr6.more_data?4:2,
1713 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %u/%u) %u links (done %u/%u (as %s))\n",
1714 (unsigned long long)(req10->highwatermark.highest_usn+1),
1715 req10->replica_flags, drs_ObjectIdentifier_to_string(mem_ctx, ncRoot),
1716 r->out.ctr->ctr6.object_count,
1717 i, r->out.ctr->ctr6.more_data?getnc_state->num_records:i,
1718 r->out.ctr->ctr6.linked_attributes_count,
1719 link_given, link_total,
1720 dom_sid_string(mem_ctx, user_sid)));
1721
1722 #if 0
1723 if (!r->out.ctr->ctr6.more_data && req10->extended_op != DRSUAPI_EXOP_NONE) {
1724 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);
1725 }
1726 #endif
1727
1728 return WERR_OK;
1729 }
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