?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s4-drs: do not return links pointed to unexistant objects
[Samba/gebeck_regimport.git] / source4 / rpc_server / drsuapi / getncchanges.c
blobdc50fc0c0ca5841f7ce7c731b8552908ac5e94d6
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 if (!active) {
361 /* We have to check that the inactive link still point to an existing object */
362 struct GUID guid;
363 struct ldb_dn *tdn;
364 int ret;
365
366 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
367 if (!NT_STATUS_IS_OK(status)) {
368 DEBUG(0,(__location__ " Unable to extract GUID in linked attribute '%s' in '%s'\n",
369 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
370 return ntstatus_to_werror(status);
371 }
372 ret = dsdb_find_dn_by_guid(sam_ctx, mem_ctx, &guid, &tdn);
373 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
374 DEBUG(2, (" Search of guid %s returned 0 objects, skipping it !\n",
375 GUID_string(mem_ctx, &guid)));
376 return WERR_OK;
377 } else if (ret != LDB_SUCCESS) {
378 DEBUG(0, (__location__ " Search of guid %s failed with error code %d\n",
379 GUID_string(mem_ctx, &guid),
380 ret));
381 return WERR_OK;
382 }
383 }
384 la->attid = sa->attributeID_id;
385 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
386
387 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
388 if (!NT_STATUS_IS_OK(status)) {
389 DEBUG(0,(__location__ " No RMD_VERSION in linked attribute '%s' in '%s'\n",
390 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
391 return ntstatus_to_werror(status);
392 }
393 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
394 if (!NT_STATUS_IS_OK(status)) {
395 DEBUG(0,(__location__ " No RMD_CHANGETIME in linked attribute '%s' in '%s'\n",
396 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
397 return ntstatus_to_werror(status);
398 }
399 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
400 if (!NT_STATUS_IS_OK(status)) {
401 DEBUG(0,(__location__ " No RMD_INVOCID in linked attribute '%s' in '%s'\n",
402 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
403 return ntstatus_to_werror(status);
404 }
405 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
406 if (!NT_STATUS_IS_OK(status)) {
407 DEBUG(0,(__location__ " No RMD_ORIGINATING_USN in linked attribute '%s' in '%s'\n",
408 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
409 return ntstatus_to_werror(status);
410 }
411
412 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
413 if (!NT_STATUS_IS_OK(status)) {
414 /* this is possible for upgraded links */
415 la->originating_add_time = la->meta_data.originating_change_time;
416 }
417
418 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
419 W_ERROR_NOT_OK_RETURN(werr);
420
421 (*la_count)++;
422 return WERR_OK;
423 }
424
425
426 /*
427 add linked attributes from an object to the list of linked
428 attributes in a getncchanges request
429 */
430 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
431 TALLOC_CTX *mem_ctx,
432 struct ldb_dn *ncRoot_dn,
433 struct dsdb_schema *schema,
434 uint64_t highest_usn,
435 uint32_t replica_flags,
436 struct ldb_message *msg,
437 struct drsuapi_DsReplicaLinkedAttribute **la_list,
438 uint32_t *la_count,
439 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
440 {
441 unsigned int i;
442 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
443 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
444
445 for (i=0; i<msg->num_elements; i++) {
446 struct ldb_message_element *el = &msg->elements[i];
447 const struct dsdb_attribute *sa;
448 unsigned int j;
449
450 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
451
452 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
453 /* we only want forward links */
454 continue;
455 }
456
457 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
458 /* its an old style link, it will have been
459 * sent in the main replication data */
460 continue;
461 }
462
463 for (j=0; j<el->num_values; j++) {
464 struct dsdb_dn *dsdb_dn;
465 uint64_t local_usn;
466 NTSTATUS status;
467 WERROR werr;
468
469 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
470 if (dsdb_dn == NULL) {
471 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
472 el->name, ldb_dn_get_linearized(msg->dn)));
473 talloc_free(tmp_ctx);
474 return WERR_DS_DRA_INTERNAL_ERROR;
475 }
476
477 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
478 if (!NT_STATUS_IS_OK(status)) {
479 /* this can happen for attributes
480 given to us with old style meta
481 data */
482 continue;
483 }
484
485 if (local_usn > uSNChanged) {
486 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
487 el->name, ldb_dn_get_linearized(msg->dn)));
488 talloc_free(tmp_ctx);
489 return WERR_DS_DRA_INTERNAL_ERROR;
490 }
491
492 if (local_usn < highest_usn) {
493 continue;
494 }
495
496 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
497 dsdb_dn, la_list, la_count);
498 if (!W_ERROR_IS_OK(werr)) {
499 talloc_free(tmp_ctx);
500 return werr;
501 }
502 }
503 }
504
505 talloc_free(tmp_ctx);
506 return WERR_OK;
507 }
508
509 /*
510 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
511 */
512 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
513 struct ldb_dn *ncRoot_dn,
514 struct drsuapi_DsReplicaCursor2CtrEx *udv)
515 {
516 int ret;
517
518 udv->version = 2;
519 udv->reserved1 = 0;
520 udv->reserved2 = 0;
521
522 ret = dsdb_load_udv_v2(sam_ctx, ncRoot_dn, udv, &udv->cursors, &udv->count);
523 if (ret != LDB_SUCCESS) {
524 DEBUG(0,(__location__ ": Failed to load UDV for %s - %s\n",
525 ldb_dn_get_linearized(ncRoot_dn), ldb_errstring(sam_ctx)));
526 return WERR_DS_DRA_INTERNAL_ERROR;
527 }
528
529 return WERR_OK;
530 }
531
532
533 /* comparison function for linked attributes - see CompareLinks() in
534 * MS-DRSR section 4.1.10.5.17 */
535 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
536 const struct drsuapi_DsReplicaLinkedAttribute *la2,
537 struct ldb_context *sam_ctx)
538 {
539 int c;
540 WERROR werr;
541 TALLOC_CTX *tmp_ctx;
542 const struct dsdb_schema *schema;
543 const struct dsdb_attribute *schema_attrib;
544 struct dsdb_dn *dn1, *dn2;
545 struct GUID guid1, guid2;
546 NTSTATUS status;
547
548 c = GUID_compare(&la1->identifier->guid,
549 &la2->identifier->guid);
550 if (c != 0) return c;
551
552 if (la1->attid != la2->attid) {
553 return la1->attid < la2->attid? -1:1;
554 }
555
556 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
557 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
558 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
559 }
560
561 /* we need to get the target GUIDs to compare */
562 tmp_ctx = talloc_new(sam_ctx);
563
564 schema = dsdb_get_schema(sam_ctx, tmp_ctx);
565 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
566
567 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
568 if (!W_ERROR_IS_OK(werr)) {
569 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
570 talloc_free(tmp_ctx);
571 return 0;
572 }
573
574 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
575 if (!W_ERROR_IS_OK(werr)) {
576 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
577 talloc_free(tmp_ctx);
578 return 0;
579 }
580
581 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
582 if (!NT_STATUS_IS_OK(status)) {
583 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
584 talloc_free(tmp_ctx);
585 return 0;
586 }
587 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
588 if (!NT_STATUS_IS_OK(status)) {
589 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
590 talloc_free(tmp_ctx);
591 return 0;
592 }
593
594 talloc_free(tmp_ctx);
595
596 return GUID_compare(&guid1, &guid2);
597 }
598
599
600 /*
601 sort the objects we send by tree order
602 */
603 static int site_res_cmp_parent_order(struct ldb_message **m1, struct ldb_message **m2)
604 {
605 return ldb_dn_compare((*m2)->dn, (*m1)->dn);
606 }
607
608 /*
609 sort the objects we send first by uSNChanged
610 */
611 static int site_res_cmp_usn_order(struct ldb_message **m1, struct ldb_message **m2)
612 {
613 unsigned usnchanged1, usnchanged2;
614 unsigned cn1, cn2;
615 cn1 = ldb_dn_get_comp_num((*m1)->dn);
616 cn2 = ldb_dn_get_comp_num((*m2)->dn);
617 if (cn1 != cn2) {
618 return cn1 > cn2 ? 1 : -1;
619 }
620 usnchanged1 = ldb_msg_find_attr_as_uint(*m1, "uSNChanged", 0);
621 usnchanged2 = ldb_msg_find_attr_as_uint(*m2, "uSNChanged", 0);
622 if (usnchanged1 == usnchanged2) {
623 return 0;
624 }
625 return usnchanged1 > usnchanged2 ? 1 : -1;
626 }
627
628
629 /*
630 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
631 */
632 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
633 TALLOC_CTX *mem_ctx,
634 struct drsuapi_DsGetNCChangesRequest10 *req10,
635 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
636 {
637 struct ldb_dn *rid_manager_dn, *fsmo_role_dn, *req_dn;
638 int ret;
639 struct ldb_context *ldb = b_state->sam_ctx;
640 struct ldb_result *ext_res;
641 struct ldb_dn *base_dn;
642 struct dsdb_fsmo_extended_op *exop;
643
644 /*
645 steps:
646 - verify that the DN being asked for is the RID Manager DN
647 - verify that we are the RID Manager
648 */
649
650 /* work out who is the RID Manager */
651 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
652 if (ret != LDB_SUCCESS) {
653 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s\n", ldb_errstring(ldb)));
654 return WERR_DS_DRA_INTERNAL_ERROR;
655 }
656
657 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
658 if (!ldb_dn_validate(req_dn) ||
659 ldb_dn_compare(req_dn, rid_manager_dn) != 0) {
660 /* that isn't the RID Manager DN */
661 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s\n",
662 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
663 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
664 return WERR_OK;
665 }
666
667 /* find the DN of the RID Manager */
668 ret = samdb_reference_dn(ldb, mem_ctx, rid_manager_dn, "fSMORoleOwner", &fsmo_role_dn);
669 if (ret != LDB_SUCCESS) {
670 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s\n",
671 ldb_errstring(ldb)));
672 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
673 return WERR_DS_DRA_INTERNAL_ERROR;
674 }
675
676 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
677 /* we're not the RID Manager - go away */
678 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
679 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
680 return WERR_OK;
681 }
682
683 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
684 W_ERROR_HAVE_NO_MEMORY(exop);
685
686 exop->fsmo_info = req10->fsmo_info;
687 exop->destination_dsa_guid = req10->destination_dsa_guid;
688
689 ret = ldb_transaction_start(ldb);
690 if (ret != LDB_SUCCESS) {
691 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
692 ldb_errstring(ldb)));
693 return WERR_DS_DRA_INTERNAL_ERROR;
694 }
695
696 /*
697 * FIXME (kim): this is a temp hack to return just few object,
698 * but not the whole domain NC.
699 * We should remove this hack and implement a 'scope'
700 * building function to return just the set of object
701 * documented for DRSUAPI_EXOP_FSMO_RID_ALLOC extended_op
702 */
703 ldb_sequence_number(ldb, LDB_SEQ_HIGHEST_SEQ, &req10->highwatermark.highest_usn);
704
705 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
706 if (ret != LDB_SUCCESS) {
707 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
708 ldb_errstring(ldb)));
709 ldb_transaction_cancel(ldb);
710 return WERR_DS_DRA_INTERNAL_ERROR;
711 }
712
713 ret = ldb_transaction_commit(ldb);
714 if (ret != LDB_SUCCESS) {
715 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
716 ldb_errstring(ldb)));
717 return WERR_DS_DRA_INTERNAL_ERROR;
718 }
719
720 talloc_free(ext_res);
721
722 base_dn = ldb_get_default_basedn(ldb);
723
724 DEBUG(2,("Allocated RID pool for server %s\n",
725 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
726
727 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
728
729 return WERR_OK;
730 }
731
732 /*
733 return an array of SIDs from a ldb_message given an attribute name
734 assumes the SIDs are in extended DN format
735 */
736 static WERROR samdb_result_sid_array_dn(struct ldb_context *sam_ctx,
737 struct ldb_message *msg,
738 TALLOC_CTX *mem_ctx,
739 const char *attr,
740 const struct dom_sid ***sids)
741 {
742 struct ldb_message_element *el;
743 unsigned int i;
744
745 el = ldb_msg_find_element(msg, attr);
746 if (!el) {
747 *sids = NULL;
748 return WERR_OK;
749 }
750
751 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
752 W_ERROR_HAVE_NO_MEMORY(*sids);
753
754 for (i=0; i<el->num_values; i++) {
755 struct ldb_dn *dn = ldb_dn_from_ldb_val(mem_ctx, sam_ctx, &el->values[i]);
756 NTSTATUS status;
757 struct dom_sid *sid;
758
759 sid = talloc(*sids, struct dom_sid);
760 W_ERROR_HAVE_NO_MEMORY(sid);
761 status = dsdb_get_extended_dn_sid(dn, sid, "SID");
762 if (!NT_STATUS_IS_OK(status)) {
763 return WERR_INTERNAL_DB_CORRUPTION;
764 }
765 (*sids)[i] = sid;
766 }
767 (*sids)[i] = NULL;
768
769 return WERR_OK;
770 }
771
772
773 /*
774 return an array of SIDs from a ldb_message given an attribute name
775 assumes the SIDs are in NDR form
776 */
777 static WERROR samdb_result_sid_array_ndr(struct ldb_context *sam_ctx,
778 struct ldb_message *msg,
779 TALLOC_CTX *mem_ctx,
780 const char *attr,
781 const struct dom_sid ***sids)
782 {
783 struct ldb_message_element *el;
784 unsigned int i;
785
786 el = ldb_msg_find_element(msg, attr);
787 if (!el) {
788 *sids = NULL;
789 return WERR_OK;
790 }
791
792 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
793 W_ERROR_HAVE_NO_MEMORY(*sids);
794
795 for (i=0; i<el->num_values; i++) {
796 enum ndr_err_code ndr_err;
797 struct dom_sid *sid;
798
799 sid = talloc(*sids, struct dom_sid);
800 W_ERROR_HAVE_NO_MEMORY(sid);
801
802 ndr_err = ndr_pull_struct_blob(&el->values[i], sid, sid,
803 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
804 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
805 return WERR_INTERNAL_DB_CORRUPTION;
806 }
807 (*sids)[i] = sid;
808 }
809 (*sids)[i] = NULL;
810
811 return WERR_OK;
812 }
813
814 /*
815 see if any SIDs in list1 are in list2
816 */
817 static bool sid_list_match(const struct dom_sid **list1, const struct dom_sid **list2)
818 {
819 unsigned int i, j;
820 /* do we ever have enough SIDs here to worry about O(n^2) ? */
821 for (i=0; list1[i]; i++) {
822 for (j=0; list2[j]; j++) {
823 if (dom_sid_equal(list1[i], list2[j])) {
824 return true;
825 }
826 }
827 }
828 return false;
829 }
830
831 /*
832 handle a DRSUAPI_EXOP_REPL_SECRET call
833 */
834 static WERROR getncchanges_repl_secret(struct drsuapi_bind_state *b_state,
835 TALLOC_CTX *mem_ctx,
836 struct drsuapi_DsGetNCChangesRequest10 *req10,
837 struct dom_sid *user_sid,
838 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
839 {
840 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
841 struct ldb_dn *obj_dn, *rodc_dn, *krbtgt_link_dn;
842 int ret;
843 const char *rodc_attrs[] = { "msDS-KrbTgtLink", "msDS-NeverRevealGroup", "msDS-RevealOnDemandGroup", NULL };
844 const char *obj_attrs[] = { "tokenGroups", "objectSid", "UserAccountControl", "msDS-KrbTgtLinkBL", NULL };
845 struct ldb_result *rodc_res, *obj_res;
846 const struct dom_sid **never_reveal_sids, **reveal_sids, **token_sids;
847 WERROR werr;
848
849 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_SECRET extended op on %s\n",
850 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
851
852 /*
853 * we need to work out if we will allow this RODC to
854 * replicate the secrets for this object
855 *
856 * see 4.1.10.5.14 GetRevealSecretsPolicyForUser for details
857 * of this function
858 */
859
860 if (b_state->sam_ctx_system == NULL) {
861 /* this operation needs system level access */
862 ctr6->extended_ret = DRSUAPI_EXOP_ERR_ACCESS_DENIED;
863 return WERR_DS_DRA_SOURCE_DISABLED;
864 }
865
866 obj_dn = drs_ObjectIdentifier_to_dn(mem_ctx, b_state->sam_ctx_system, ncRoot);
867 if (!ldb_dn_validate(obj_dn)) goto failed;
868
869 rodc_dn = ldb_dn_new_fmt(mem_ctx, b_state->sam_ctx_system, "<SID=%s>",
870 dom_sid_string(mem_ctx, user_sid));
871 if (!ldb_dn_validate(rodc_dn)) goto failed;
872
873 /* do the two searches we need */
874 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &rodc_res, rodc_dn, rodc_attrs,
875 DSDB_SEARCH_SHOW_EXTENDED_DN);
876 if (ret != LDB_SUCCESS || rodc_res->count != 1) goto failed;
877
878 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &obj_res, obj_dn, obj_attrs, 0);
879 if (ret != LDB_SUCCESS || obj_res->count != 1) goto failed;
880
881 /* if the object SID is equal to the user_sid, allow */
882 if (dom_sid_equal(user_sid,
883 samdb_result_dom_sid(mem_ctx, obj_res->msgs[0], "objectSid"))) {
884 goto allowed;
885 }
886
887 /* an RODC is allowed to get its own krbtgt account secrets */
888 krbtgt_link_dn = samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
889 rodc_res->msgs[0], "msDS-KrbTgtLink", NULL);
890 if (krbtgt_link_dn != NULL &&
891 ldb_dn_compare(obj_dn, krbtgt_link_dn) == 0) {
892 goto allowed;
893 }
894
895 /* but it isn't allowed to get anyone elses krbtgt secrets */
896 if (samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
897 obj_res->msgs[0], "msDS-KrbTgtLinkBL", NULL)) {
898 goto denied;
899 }
900
901 if (ldb_msg_find_attr_as_uint(obj_res->msgs[0],
902 "userAccountControl", 0) &
903 UF_INTERDOMAIN_TRUST_ACCOUNT) {
904 goto denied;
905 }
906
907 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
908 mem_ctx, "msDS-NeverRevealGroup", &never_reveal_sids);
909 if (!W_ERROR_IS_OK(werr)) {
910 goto denied;
911 }
912
913 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
914 mem_ctx, "msDS-RevealOnDemandGroup", &reveal_sids);
915 if (!W_ERROR_IS_OK(werr)) {
916 goto denied;
917 }
918
919 werr = samdb_result_sid_array_ndr(b_state->sam_ctx_system, obj_res->msgs[0],
920 mem_ctx, "tokenGroups", &token_sids);
921 if (!W_ERROR_IS_OK(werr) || token_sids==NULL) {
922 goto denied;
923 }
924
925 if (never_reveal_sids &&
926 sid_list_match(token_sids, never_reveal_sids)) {
927 goto denied;
928 }
929
930 if (reveal_sids &&
931 sid_list_match(token_sids, reveal_sids)) {
932 goto allowed;
933 }
934
935 /* default deny */
936 denied:
937 DEBUG(2,(__location__ ": Denied RODC secret replication for %s by RODC %s\n",
938 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
939 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
940 return WERR_DS_DRA_ACCESS_DENIED;
941
942 allowed:
943 DEBUG(2,(__location__ ": Allowed RODC secret replication for %s by RODC %s\n",
944 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
945 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
946 req10->highwatermark.highest_usn = 0;
947 return WERR_OK;
948
949 failed:
950 DEBUG(2,(__location__ ": Failed RODC secret replication for %s by RODC %s\n",
951 ldb_dn_get_linearized(obj_dn), dom_sid_string(mem_ctx, user_sid)));
952 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
953 return WERR_DS_DRA_BAD_DN;
954 }
955
956
957 /*
958 handle a DRSUAPI_EXOP_REPL_OBJ call
959 */
960 static WERROR getncchanges_repl_obj(struct drsuapi_bind_state *b_state,
961 TALLOC_CTX *mem_ctx,
962 struct drsuapi_DsGetNCChangesRequest10 *req10,
963 struct dom_sid *user_sid,
964 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
965 {
966 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
967
968 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_OBJ extended op on %s\n",
969 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
970
971 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
972 req10->highwatermark.highest_usn = 0;
973 return WERR_OK;
974 }
975
976
977 /*
978 handle DRSUAPI_EXOP_FSMO_REQ_ROLE,
979 DRSUAPI_EXOP_FSMO_RID_REQ_ROLE,
980 and DRSUAPI_EXOP_FSMO_REQ_PDC calls
981 */
982 static WERROR getncchanges_change_master(struct drsuapi_bind_state *b_state,
983 TALLOC_CTX *mem_ctx,
984 struct drsuapi_DsGetNCChangesRequest10 *req10,
985 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
986 {
987 struct ldb_dn *fsmo_role_dn, *req_dn, *ntds_dn;
988 int ret;
989 unsigned int i;
990 struct ldb_context *ldb = b_state->sam_ctx;
991 struct ldb_message *msg;
992
993 /*
994 steps:
995 - verify that the client dn exists
996 - verify that we are the current master
997 */
998
999 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
1000 if (!ldb_dn_validate(req_dn)) {
1001 /* that is not a valid dn */
1002 DEBUG(0,(__location__ ": FSMO role transfer request for invalid DN %s\n",
1003 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
1004 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
1005 return WERR_OK;
1006 }
1007
1008 /* retrieve the current role owner */
1009 ret = samdb_reference_dn(ldb, mem_ctx, req_dn, "fSMORoleOwner", &fsmo_role_dn);
1010 if (ret != LDB_SUCCESS) {
1011 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in context - %s\n",
1012 ldb_errstring(ldb)));
1013 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1014 return WERR_DS_DRA_INTERNAL_ERROR;
1015 }
1016
1017 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
1018 /* we're not the current owner - go away */
1019 DEBUG(0,(__location__ ": FSMO transfer request when not owner\n"));
1020 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1021 return WERR_OK;
1022 }
1023
1024 /* change the current master */
1025 msg = ldb_msg_new(ldb);
1026 W_ERROR_HAVE_NO_MEMORY(msg);
1027 msg->dn = drs_ObjectIdentifier_to_dn(msg, ldb, req10->naming_context);
1028 W_ERROR_HAVE_NO_MEMORY(msg->dn);
1029
1030 /* TODO: make sure ntds_dn is a valid nTDSDSA object */
1031 ret = dsdb_find_dn_by_guid(ldb, msg, &req10->destination_dsa_guid, &ntds_dn);
1032 if (ret != LDB_SUCCESS) {
1033 DEBUG(0, (__location__ ": Unable to find NTDS object for guid %s - %s\n",
1034 GUID_string(mem_ctx, &req10->destination_dsa_guid), ldb_errstring(ldb)));
1035 talloc_free(msg);
1036 ctr6->extended_ret = DRSUAPI_EXOP_ERR_UNKNOWN_CALLER;
1037 return WERR_OK;
1038 }
1039
1040 ret = ldb_msg_add_string(msg, "fSMORoleOwner", ldb_dn_get_linearized(ntds_dn));
1041 if (ret != 0) {
1042 talloc_free(msg);
1043 return WERR_DS_DRA_INTERNAL_ERROR;
1044 }
1045
1046 for (i=0;i<msg->num_elements;i++) {
1047 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
1048 }
1049
1050 ret = ldb_transaction_start(ldb);
1051 if (ret != LDB_SUCCESS) {
1052 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
1053 ldb_errstring(ldb)));
1054 return WERR_DS_DRA_INTERNAL_ERROR;
1055 }
1056
1057 ret = ldb_modify(ldb, msg);
1058 if (ret != LDB_SUCCESS) {
1059 DEBUG(0,(__location__ ": Failed to change current owner - %s\n",
1060 ldb_errstring(ldb)));
1061 ldb_transaction_cancel(ldb);
1062 return WERR_DS_DRA_INTERNAL_ERROR;
1063 }
1064
1065 ret = ldb_transaction_commit(ldb);
1066 if (ret != LDB_SUCCESS) {
1067 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
1068 ldb_errstring(ldb)));
1069 return WERR_DS_DRA_INTERNAL_ERROR;
1070 }
1071
1072 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1073
1074 return WERR_OK;
1075 }
1076
1077 /* state of a partially completed getncchanges call */
1078 struct drsuapi_getncchanges_state {
1079 struct GUID *guids;
1080 uint32_t num_records;
1081 uint32_t num_processed;
1082 struct ldb_dn *ncRoot_dn;
1083 bool is_schema_nc;
1084 uint64_t min_usn;
1085 uint64_t highest_usn;
1086 struct ldb_dn *last_dn;
1087 struct drsuapi_DsReplicaLinkedAttribute *la_list;
1088 uint32_t la_count;
1089 bool la_sorted;
1090 uint32_t la_idx;
1091 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector;
1092 };
1093
1094 /*
1095 see if this getncchanges request includes a request to reveal secret information
1096 */
1097 static WERROR dcesrv_drsuapi_is_reveal_secrets_request(struct drsuapi_bind_state *b_state,
1098 struct drsuapi_DsGetNCChangesRequest10 *req10,
1099 bool *is_secret_request)
1100 {
1101 enum drsuapi_DsExtendedOperation exop;
1102 uint32_t i;
1103 struct dsdb_schema *schema;
1104
1105 *is_secret_request = true;
1106
1107 exop = req10->extended_op;
1108
1109 switch (exop) {
1110 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1111 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1112 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1113 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1114 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1115 /* FSMO exops can reveal secrets */
1116 *is_secret_request = true;
1117 return WERR_OK;
1118 case DRSUAPI_EXOP_REPL_SECRET:
1119 case DRSUAPI_EXOP_REPL_OBJ:
1120 case DRSUAPI_EXOP_NONE:
1121 break;
1122 }
1123
1124 if (req10->replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
1125 *is_secret_request = false;
1126 return WERR_OK;
1127 }
1128
1129 if (exop == DRSUAPI_EXOP_REPL_SECRET ||
1130 req10->partial_attribute_set == NULL) {
1131 /* they want secrets */
1132 *is_secret_request = true;
1133 return WERR_OK;
1134 }
1135
1136 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1137
1138 /* check the attributes they asked for */
1139 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1140 const struct dsdb_attribute *sa;
1141 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1142 if (sa == NULL) {
1143 return WERR_DS_DRA_SCHEMA_MISMATCH;
1144 }
1145 if (!dsdb_attr_in_rodc_fas(sa)) {
1146 *is_secret_request = true;
1147 return WERR_OK;
1148 }
1149 }
1150
1151 /* check the attributes they asked for */
1152 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1153 const struct dsdb_attribute *sa;
1154 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1155 if (sa == NULL) {
1156 return WERR_DS_DRA_SCHEMA_MISMATCH;
1157 }
1158 if (!dsdb_attr_in_rodc_fas(sa)) {
1159 *is_secret_request = true;
1160 return WERR_OK;
1161 }
1162 }
1163
1164 *is_secret_request = false;
1165 return WERR_OK;
1166 }
1167
1168
1169 /*
1170 map from req8 to req10
1171 */
1172 static struct drsuapi_DsGetNCChangesRequest10 *
1173 getncchanges_map_req8(TALLOC_CTX *mem_ctx,
1174 struct drsuapi_DsGetNCChangesRequest8 *req8)
1175 {
1176 struct drsuapi_DsGetNCChangesRequest10 *req10 = talloc_zero(mem_ctx,
1177 struct drsuapi_DsGetNCChangesRequest10);
1178 if (req10 == NULL) {
1179 return NULL;
1180 }
1181
1182 req10->destination_dsa_guid = req8->destination_dsa_guid;
1183 req10->source_dsa_invocation_id = req8->source_dsa_invocation_id;
1184 req10->naming_context = req8->naming_context;
1185 req10->highwatermark = req8->highwatermark;
1186 req10->uptodateness_vector = req8->uptodateness_vector;
1187 req10->replica_flags = req8->replica_flags;
1188 req10->max_object_count = req8->max_object_count;
1189 req10->max_ndr_size = req8->max_ndr_size;
1190 req10->extended_op = req8->extended_op;
1191 req10->fsmo_info = req8->fsmo_info;
1192 req10->partial_attribute_set = req8->partial_attribute_set;
1193 req10->partial_attribute_set_ex = req8->partial_attribute_set_ex;
1194 req10->mapping_ctr = req8->mapping_ctr;
1195
1196 return req10;
1197 }
1198
1199
1200 /**
1201 * Collects object for normal replication cycle.
1202 */
1203 static WERROR getncchanges_collect_objects(struct drsuapi_bind_state *b_state,
1204 TALLOC_CTX *mem_ctx,
1205 struct drsuapi_DsGetNCChangesRequest10 *req10,
1206 struct ldb_dn *search_dn,
1207 const char *extra_filter,
1208 struct ldb_result **search_res)
1209 {
1210 int ret;
1211 char* search_filter;
1212 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
1213 //const char *extra_filter;
1214 struct drsuapi_getncchanges_state *getnc_state = b_state->getncchanges_state;
1215 const char *attrs[] = { "uSNChanged",
1216 "objectGUID" ,
1217 NULL };
1218
1219 if (req10->extended_op == DRSUAPI_EXOP_REPL_OBJ ||
1220 req10->extended_op == DRSUAPI_EXOP_REPL_SECRET) {
1221 scope = LDB_SCOPE_BASE;
1222 }
1223
1224 //extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1225
1226 //getnc_state->min_usn = req10->highwatermark.highest_usn;
1227
1228 /* Construct response. */
1229 search_filter = talloc_asprintf(mem_ctx,
1230 "(uSNChanged>=%llu)",
1231 (unsigned long long)(getnc_state->min_usn+1));
1232
1233 if (extra_filter) {
1234 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
1235 }
1236
1237 if (req10->replica_flags & DRSUAPI_DRS_CRITICAL_ONLY) {
1238 search_filter = talloc_asprintf(mem_ctx,
1239 "(&%s(isCriticalSystemObject=TRUE))",
1240 search_filter);
1241 }
1242
1243 if (req10->replica_flags & DRSUAPI_DRS_ASYNC_REP) {
1244 scope = LDB_SCOPE_BASE;
1245 }
1246
1247 if (!search_dn) {
1248 search_dn = getnc_state->ncRoot_dn;
1249 }
1250
1251 DEBUG(2,(__location__ ": getncchanges on %s using filter %s\n",
1252 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
1253 ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, getnc_state, search_res,
1254 search_dn, scope, attrs,
1255 search_filter);
1256 if (ret != LDB_SUCCESS) {
1257 return WERR_DS_DRA_INTERNAL_ERROR;
1258 }
1259
1260 return WERR_OK;
1261 }
1262
1263 /**
1264 * Collects object for normal replication cycle.
1265 */
1266 static WERROR getncchanges_collect_objects_exop(struct drsuapi_bind_state *b_state,
1267 TALLOC_CTX *mem_ctx,
1268 struct drsuapi_DsGetNCChangesRequest10 *req10,
1269 struct drsuapi_DsGetNCChangesCtr6 *ctr6,
1270 struct ldb_dn *search_dn,
1271 const char *extra_filter,
1272 struct ldb_result **search_res)
1273 {
1274 /* we have nothing to do in case of ex-op failure */
1275 if (ctr6->extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
1276 return WERR_OK;
1277 }
1278
1279 /* TODO: implement extended op specific collection
1280 * of objects. Right now we just normal procedure
1281 * for collecting objects */
1282 return getncchanges_collect_objects(b_state, mem_ctx, req10, search_dn, extra_filter, search_res);
1283 }
1284
1285 /*
1286 drsuapi_DsGetNCChanges
1287
1288 see MS-DRSR 4.1.10.5.2 for basic logic of this function
1289 */
1290 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
1291 struct drsuapi_DsGetNCChanges *r)
1292 {
1293 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
1294 int ret;
1295 uint32_t i;
1296 struct dsdb_schema *schema;
1297 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
1298 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
1299 NTSTATUS status;
1300 DATA_BLOB session_key;
1301 WERROR werr;
1302 struct dcesrv_handle *h;
1303 struct drsuapi_bind_state *b_state;
1304 struct drsuapi_getncchanges_state *getnc_state;
1305 struct drsuapi_DsGetNCChangesRequest10 *req10;
1306 uint32_t options;
1307 uint32_t max_objects;
1308 uint32_t max_links;
1309 uint32_t link_count = 0;
1310 uint32_t link_total = 0;
1311 uint32_t link_given = 0;
1312 struct ldb_dn *search_dn = NULL;
1313 bool am_rodc, null_scope=false;
1314 enum security_user_level security_level;
1315 struct ldb_context *sam_ctx;
1316 struct dom_sid *user_sid;
1317 bool is_secret_request;
1318
1319 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
1320 b_state = h->data;
1321
1322 sam_ctx = b_state->sam_ctx_system?b_state->sam_ctx_system:b_state->sam_ctx;
1323
1324 *r->out.level_out = 6;
1325 /* TODO: linked attributes*/
1326 r->out.ctr->ctr6.linked_attributes_count = 0;
1327 r->out.ctr->ctr6.linked_attributes = NULL;
1328
1329 r->out.ctr->ctr6.object_count = 0;
1330 r->out.ctr->ctr6.nc_object_count = 0;
1331 r->out.ctr->ctr6.more_data = false;
1332 r->out.ctr->ctr6.uptodateness_vector = NULL;
1333
1334 /* a RODC doesn't allow for any replication */
1335 ret = samdb_rodc(sam_ctx, &am_rodc);
1336 if (ret == LDB_SUCCESS && am_rodc) {
1337 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
1338 return WERR_DS_DRA_SOURCE_DISABLED;
1339 }
1340
1341 /* Check request revision.
1342 */
1343 switch (r->in.level) {
1344 case 8:
1345 req10 = getncchanges_map_req8(mem_ctx, &r->in.req->req8);
1346 if (req10 == NULL) {
1347 return WERR_NOMEM;
1348 }
1349 break;
1350 case 10:
1351 req10 = &r->in.req->req10;
1352 break;
1353 default:
1354 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
1355 r->in.level));
1356 return WERR_REVISION_MISMATCH;
1357 }
1358
1359
1360 /* Perform access checks. */
1361 /* TODO: we need to support a sync on a specific non-root
1362 * DN. We'll need to find the real partition root here */
1363 ncRoot = req10->naming_context;
1364 if (ncRoot == NULL) {
1365 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
1366 return WERR_DS_DRA_INVALID_PARAMETER;
1367 }
1368
1369 if (samdb_ntds_options(sam_ctx, &options) != LDB_SUCCESS) {
1370 return WERR_DS_DRA_INTERNAL_ERROR;
1371 }
1372
1373 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
1374 !(req10->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
1375 return WERR_DS_DRA_SOURCE_DISABLED;
1376 }
1377
1378 user_sid = &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
1379
1380 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1381 mem_ctx,
1382 dce_call->conn->auth_state.session_info->security_token,
1383 req10->naming_context,
1384 GUID_DRS_GET_CHANGES);
1385 if (!W_ERROR_IS_OK(werr)) {
1386 return werr;
1387 }
1388
1389 werr = dcesrv_drsuapi_is_reveal_secrets_request(b_state, req10, &is_secret_request);
1390 if (!W_ERROR_IS_OK(werr)) {
1391 return werr;
1392 }
1393 if (is_secret_request && req10->extended_op != DRSUAPI_EXOP_REPL_SECRET) {
1394 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1395 mem_ctx,
1396 dce_call->conn->auth_state.session_info->security_token,
1397 req10->naming_context,
1398 GUID_DRS_GET_ALL_CHANGES);
1399 if (!W_ERROR_IS_OK(werr)) {
1400 return werr;
1401 }
1402 }
1403
1404 /* for non-administrator replications, check that they have
1405 given the correct source_dsa_invocation_id */
1406 security_level = security_session_user_level(dce_call->conn->auth_state.session_info,
1407 samdb_domain_sid(sam_ctx));
1408 if (security_level == SECURITY_RO_DOMAIN_CONTROLLER) {
1409 if (req10->replica_flags & DRSUAPI_DRS_WRIT_REP) {
1410 /* we rely on this flag being unset for RODC requests */
1411 req10->replica_flags &= ~DRSUAPI_DRS_WRIT_REP;
1412 }
1413 }
1414
1415 if (req10->replica_flags & DRSUAPI_DRS_FULL_SYNC_PACKET) {
1416 /* Ignore the _in_ uptpdateness vector*/
1417 req10->uptodateness_vector = NULL;
1418 }
1419
1420 getnc_state = b_state->getncchanges_state;
1421
1422 /* see if a previous replication has been abandoned */
1423 if (getnc_state) {
1424 struct ldb_dn *new_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1425 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
1426 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
1427 ldb_dn_get_linearized(new_dn),
1428 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
1429 ldb_dn_get_linearized(getnc_state->last_dn)));
1430 talloc_free(getnc_state);
1431 getnc_state = NULL;
1432 }
1433 }
1434
1435 if (getnc_state == NULL) {
1436 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
1437 if (getnc_state == NULL) {
1438 return WERR_NOMEM;
1439 }
1440 b_state->getncchanges_state = getnc_state;
1441 getnc_state->ncRoot_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1442
1443 /* find out if we are to replicate Schema NC */
1444 ret = ldb_dn_compare(getnc_state->ncRoot_dn,
1445 ldb_get_schema_basedn(b_state->sam_ctx));
1446 getnc_state->is_schema_nc = (0 == ret);
1447
1448 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1449 r->out.ctr->ctr6.extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1450 }
1451
1452 /*
1453 * This is the first replication cycle and it is
1454 * a good place to handle extended operations
1455 *
1456 * FIXME: we don't fully support extended operations yet
1457 */
1458 switch (req10->extended_op) {
1459 case DRSUAPI_EXOP_NONE:
1460 break;
1461 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1462 werr = getncchanges_rid_alloc(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1463 W_ERROR_NOT_OK_RETURN(werr);
1464 search_dn = ldb_get_default_basedn(sam_ctx);
1465 break;
1466 case DRSUAPI_EXOP_REPL_SECRET:
1467 werr = getncchanges_repl_secret(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1468 r->out.result = werr;
1469 W_ERROR_NOT_OK_RETURN(werr);
1470 break;
1471 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1472 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1473 W_ERROR_NOT_OK_RETURN(werr);
1474 break;
1475 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1476 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1477 W_ERROR_NOT_OK_RETURN(werr);
1478 break;
1479 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1480 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1481 W_ERROR_NOT_OK_RETURN(werr);
1482 break;
1483 case DRSUAPI_EXOP_REPL_OBJ:
1484 werr = getncchanges_repl_obj(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1485 r->out.result = werr;
1486 W_ERROR_NOT_OK_RETURN(werr);
1487 break;
1488
1489 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1490
1491 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
1492 (unsigned)req10->extended_op));
1493 return WERR_DS_DRA_NOT_SUPPORTED;
1494 }
1495 }
1496
1497 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
1498 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
1499 DEBUG(0,(__location__ ": Bad DN '%s'\n",
1500 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1501 return WERR_DS_DRA_INVALID_PARAMETER;
1502 }
1503
1504 /* we need the session key for encrypting password attributes */
1505 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
1506 if (!NT_STATUS_IS_OK(status)) {
1507 DEBUG(0,(__location__ ": Failed to get session key\n"));
1508 return WERR_DS_DRA_INTERNAL_ERROR;
1509 }
1510
1511 /*
1512 TODO: MS-DRSR section 4.1.10.1.1
1513 Work out if this is the start of a new cycle */
1514
1515 if (getnc_state->guids == NULL) {
1516 const char *extra_filter;
1517 struct ldb_result *search_res = NULL;
1518
1519 extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1520
1521 getnc_state->min_usn = req10->highwatermark.highest_usn;
1522
1523 if (req10->extended_op == DRSUAPI_EXOP_NONE) {
1524 werr = getncchanges_collect_objects(b_state, mem_ctx, req10,
1525 search_dn, extra_filter,
1526 &search_res);
1527 } else {
1528 werr = getncchanges_collect_objects_exop(b_state, mem_ctx, req10,
1529 &r->out.ctr->ctr6,
1530 search_dn, extra_filter,
1531 &search_res);
1532 }
1533 W_ERROR_NOT_OK_RETURN(werr);
1534
1535 if (search_res) {
1536 if (req10->replica_flags & DRSUAPI_DRS_GET_ANC) {
1537 TYPESAFE_QSORT(search_res->msgs,
1538 search_res->count,
1539 site_res_cmp_parent_order);
1540 } else {
1541 TYPESAFE_QSORT(search_res->msgs,
1542 search_res->count,
1543 site_res_cmp_usn_order);
1544 }
1545 }
1546
1547 /* extract out the GUIDs list */
1548 getnc_state->num_records = search_res ? search_res->count : 0;
1549 getnc_state->guids = talloc_array(getnc_state, struct GUID, getnc_state->num_records);
1550 W_ERROR_HAVE_NO_MEMORY(getnc_state->guids);
1551
1552 for (i=0; i<getnc_state->num_records; i++) {
1553 getnc_state->guids[i] = samdb_result_guid(search_res->msgs[i], "objectGUID");
1554 if (GUID_all_zero(&getnc_state->guids[i])) {
1555 DEBUG(2,("getncchanges: bad objectGUID from %s\n", ldb_dn_get_linearized(search_res->msgs[i]->dn)));
1556 return WERR_DS_DRA_INTERNAL_ERROR;
1557 }
1558 }
1559
1560
1561 talloc_free(search_res);
1562
1563 getnc_state->uptodateness_vector = talloc_steal(getnc_state, req10->uptodateness_vector);
1564 if (getnc_state->uptodateness_vector) {
1565 /* make sure its sorted */
1566 TYPESAFE_QSORT(getnc_state->uptodateness_vector->cursors,
1567 getnc_state->uptodateness_vector->count,
1568 drsuapi_DsReplicaCursor_compare);
1569 }
1570 }
1571
1572 /* Prefix mapping */
1573 schema = dsdb_get_schema(sam_ctx, mem_ctx);
1574 if (!schema) {
1575 DEBUG(0,("No schema in sam_ctx\n"));
1576 return WERR_DS_DRA_INTERNAL_ERROR;
1577 }
1578
1579 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
1580 *r->out.ctr->ctr6.naming_context = *ncRoot;
1581
1582 if (dsdb_find_guid_by_dn(sam_ctx, getnc_state->ncRoot_dn,
1583 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
1584 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
1585 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
1586 return WERR_DS_DRA_INTERNAL_ERROR;
1587 }
1588
1589 /* find the SID if there is one */
1590 dsdb_find_sid_by_dn(sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
1591
1592 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
1593 r->out.ctr->ctr6.mapping_ctr = *ctr;
1594
1595 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(sam_ctx));
1596 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(sam_ctx));
1597
1598 r->out.ctr->ctr6.old_highwatermark = req10->highwatermark;
1599 r->out.ctr->ctr6.new_highwatermark = req10->highwatermark;
1600
1601 r->out.ctr->ctr6.first_object = NULL;
1602 currentObject = &r->out.ctr->ctr6.first_object;
1603
1604 /* use this to force single objects at a time, which is useful
1605 * for working out what object is giving problems
1606 */
1607 max_objects = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
1608 if (req10->max_object_count < max_objects) {
1609 max_objects = req10->max_object_count;
1610 }
1611 /*
1612 * TODO: work out how the maximum should be calculated
1613 */
1614 max_links = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max link sync", 1500);
1615
1616 for (i=getnc_state->num_processed;
1617 i<getnc_state->num_records &&
1618 !null_scope &&
1619 (r->out.ctr->ctr6.object_count < max_objects);
1620 i++) {
1621 int uSN;
1622 struct drsuapi_DsReplicaObjectListItemEx *obj;
1623 struct ldb_message *msg;
1624 static const char * const msg_attrs[] = {
1625 "*",
1626 "nTSecurityDescriptor",
1627 "parentGUID",
1628 "replPropertyMetaData",
1629 DSDB_SECRET_ATTRIBUTES,
1630 NULL };
1631 struct ldb_result *msg_res;
1632 struct ldb_dn *msg_dn;
1633
1634 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
1635 W_ERROR_HAVE_NO_MEMORY(obj);
1636
1637 msg_dn = ldb_dn_new_fmt(obj, sam_ctx, "<GUID=%s>", GUID_string(obj, &getnc_state->guids[i]));
1638 W_ERROR_HAVE_NO_MEMORY(msg_dn);
1639
1640
1641 /* by re-searching here we avoid having a lot of full
1642 * records in memory between calls to getncchanges
1643 */
1644 ret = drsuapi_search_with_extended_dn(sam_ctx, obj, &msg_res,
1645 msg_dn,
1646 LDB_SCOPE_BASE, msg_attrs, NULL);
1647 if (ret != LDB_SUCCESS) {
1648 if (ret != LDB_ERR_NO_SUCH_OBJECT) {
1649 DEBUG(1,("getncchanges: failed to fetch DN %s - %s\n",
1650 ldb_dn_get_extended_linearized(obj, msg_dn, 1), ldb_errstring(sam_ctx)));
1651 }
1652 talloc_free(obj);
1653 continue;
1654 }
1655
1656 msg = msg_res->msgs[0];
1657
1658 werr = get_nc_changes_build_object(obj, msg,
1659 sam_ctx, getnc_state->ncRoot_dn,
1660 getnc_state->is_schema_nc,
1661 schema, &session_key, getnc_state->min_usn,
1662 req10->replica_flags,
1663 req10->partial_attribute_set,
1664 getnc_state->uptodateness_vector,
1665 req10->extended_op);
1666 if (!W_ERROR_IS_OK(werr)) {
1667 return werr;
1668 }
1669
1670 werr = get_nc_changes_add_links(sam_ctx, getnc_state,
1671 getnc_state->ncRoot_dn,
1672 schema, getnc_state->min_usn,
1673 req10->replica_flags,
1674 msg,
1675 &getnc_state->la_list,
1676 &getnc_state->la_count,
1677 getnc_state->uptodateness_vector);
1678 if (!W_ERROR_IS_OK(werr)) {
1679 return werr;
1680 }
1681
1682 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
1683 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
1684 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
1685 }
1686 if (uSN > getnc_state->highest_usn) {
1687 getnc_state->highest_usn = uSN;
1688 }
1689
1690 if (obj->meta_data_ctr == NULL) {
1691 DEBUG(8,(__location__ ": getncchanges skipping send of object %s\n",
1692 ldb_dn_get_linearized(msg->dn)));
1693 /* no attributes to send */
1694 talloc_free(obj);
1695 continue;
1696 }
1697
1698 r->out.ctr->ctr6.object_count++;
1699
1700 *currentObject = obj;
1701 currentObject = &obj->next_object;
1702
1703 talloc_free(getnc_state->last_dn);
1704 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
1705
1706 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
1707
1708 talloc_free(msg_res);
1709 talloc_free(msg_dn);
1710 }
1711
1712 getnc_state->num_processed = i;
1713
1714 r->out.ctr->ctr6.nc_object_count = getnc_state->num_records;
1715
1716 /* the client can us to call UpdateRefs on its behalf to
1717 re-establish monitoring of the NC */
1718 if ((req10->replica_flags & (DRSUAPI_DRS_ADD_REF | DRSUAPI_DRS_REF_GCSPN)) &&
1719 !GUID_all_zero(&req10->destination_dsa_guid)) {
1720 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
1721 DEBUG(3,("UpdateRefs on getncchanges for %s\n",
1722 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
1723 ureq.naming_context = ncRoot;
1724 ureq.dest_dsa_dns_name = talloc_asprintf(mem_ctx, "%s._msdcs.%s",
1725 GUID_string(mem_ctx, &req10->destination_dsa_guid),
1726 lpcfg_dnsdomain(dce_call->conn->dce_ctx->lp_ctx));
1727 if (!ureq.dest_dsa_dns_name) {
1728 return WERR_NOMEM;
1729 }
1730 ureq.dest_dsa_guid = req10->destination_dsa_guid;
1731 ureq.options = DRSUAPI_DRS_ADD_REF |
1732 DRSUAPI_DRS_ASYNC_OP |
1733 DRSUAPI_DRS_GETCHG_CHECK;
1734
1735 /* we also need to pass through the
1736 DRSUAPI_DRS_REF_GCSPN bit so that repsTo gets flagged
1737 to send notifies using the GC SPN */
1738 ureq.options |= (req10->replica_flags & DRSUAPI_DRS_REF_GCSPN);
1739
1740 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
1741 if (!W_ERROR_IS_OK(werr)) {
1742 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
1743 win_errstr(werr)));
1744 }
1745 }
1746
1747 /*
1748 * TODO:
1749 * This is just a guess, how to calculate the
1750 * number of linked attributes to send, we need to
1751 * find out how to do this right.
1752 */
1753 if (r->out.ctr->ctr6.object_count >= max_links) {
1754 max_links = 0;
1755 } else {
1756 max_links -= r->out.ctr->ctr6.object_count;
1757 }
1758
1759 link_total = getnc_state->la_count;
1760
1761 if (i < getnc_state->num_records) {
1762 r->out.ctr->ctr6.more_data = true;
1763 } else {
1764 /* sort the whole array the first time */
1765 if (!getnc_state->la_sorted) {
1766 LDB_TYPESAFE_QSORT(getnc_state->la_list, getnc_state->la_count,
1767 sam_ctx, linked_attribute_compare);
1768 getnc_state->la_sorted = true;
1769 }
1770
1771 link_count = getnc_state->la_count - getnc_state->la_idx;
1772 link_count = MIN(max_links, link_count);
1773
1774 r->out.ctr->ctr6.linked_attributes_count = link_count;
1775 r->out.ctr->ctr6.linked_attributes = getnc_state->la_list + getnc_state->la_idx;
1776
1777 getnc_state->la_idx += link_count;
1778 link_given = getnc_state->la_idx;
1779
1780 if (getnc_state->la_idx < getnc_state->la_count) {
1781 r->out.ctr->ctr6.more_data = true;
1782 }
1783 }
1784
1785 if (!r->out.ctr->ctr6.more_data) {
1786 talloc_steal(mem_ctx, getnc_state->la_list);
1787
1788 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1789 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1790
1791 werr = get_nc_changes_udv(sam_ctx, getnc_state->ncRoot_dn,
1792 r->out.ctr->ctr6.uptodateness_vector);
1793 if (!W_ERROR_IS_OK(werr)) {
1794 return werr;
1795 }
1796
1797 talloc_free(getnc_state);
1798 b_state->getncchanges_state = NULL;
1799 }
1800
1801 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1802 r->out.ctr->ctr6.uptodateness_vector = NULL;
1803 r->out.ctr->ctr6.nc_object_count = 0;
1804 ZERO_STRUCT(r->out.ctr->ctr6.new_highwatermark);
1805 }
1806
1807 DEBUG(r->out.ctr->ctr6.more_data?4:2,
1808 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %u/%u) %u links (done %u/%u (as %s))\n",
1809 (unsigned long long)(req10->highwatermark.highest_usn+1),
1810 req10->replica_flags, drs_ObjectIdentifier_to_string(mem_ctx, ncRoot),
1811 r->out.ctr->ctr6.object_count,
1812 i, r->out.ctr->ctr6.more_data?getnc_state->num_records:i,
1813 r->out.ctr->ctr6.linked_attributes_count,
1814 link_given, link_total,
1815 dom_sid_string(mem_ctx, user_sid)));
1816
1817 #if 0
1818 if (!r->out.ctr->ctr6.more_data && req10->extended_op != DRSUAPI_EXOP_NONE) {
1819 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);
1820 }
1821 #endif
1822
1823 return WERR_OK;
1824 }
reg import