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s4-drs: avoid calling unecesserly ldb_msg_find_attr_as_* as this call in unefficient
[Samba/bb.git] / source4 / rpc_server / drsuapi / getncchanges.c
blob819a4a3a85cfaecf773a71259d9ee5303b0ea78c
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 const char *v;
366
367 v = ldb_msg_find_attr_as_string(msg, "isDeleted", "false");
368 if (strncasecmp(v, "true", 4) == 0) {
369 /*
370 * Note: we skip the transmition of the deleted link even if the other part used to
371 * know about it because when we transmit the deletion of the object, the link will
372 * be deleted too due to deletion of object where link points and Windows do so.
373 */
374 if (dsdb_functional_level(sam_ctx) >= DS_DOMAIN_FUNCTION_2008_R2) {
375 v = ldb_msg_find_attr_as_string(msg, "isRecycled", "true");
376 /*
377 * On Windows 2008R2 isRecycled is always present even if FL or DL are < FL 2K8R2
378 * if it join an existing domain with deleted objets, it firsts impose to have a
379 * schema with the is-Recycled object and for all deleted objects it adds the isRecycled
380 * either during initial replication or after the getNCChanges.
381 * Behavior of samba has been changed to always have this attribute if it's present in the schema.
382 *
383 * So if FL <2K8R2 isRecycled might be here or not but we don't care, it's meaning less.
384 * If FL >=2K8R2 we are sure that this attribute will be here.
385 * For this kind of forest level we do not return the link if the object is recycled
386 * (isRecycled = true).
387 */
388 if (strncasecmp(v, "true", 4) == 0) {
389 DEBUG(2, (" object %s is recycled, not returning linked attribute !\n",
390 ldb_dn_get_linearized(msg->dn)));
391 return WERR_OK;
392 }
393 } else {
394 return WERR_OK;
395 }
396 }
397 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
398 if (!NT_STATUS_IS_OK(status)) {
399 DEBUG(0,(__location__ " Unable to extract GUID in linked attribute '%s' in '%s'\n",
400 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
401 return ntstatus_to_werror(status);
402 }
403 ret = dsdb_find_dn_by_guid(sam_ctx, mem_ctx, &guid, &tdn);
404 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
405 DEBUG(2, (" Search of guid %s returned 0 objects, skipping it !\n",
406 GUID_string(mem_ctx, &guid)));
407 return WERR_OK;
408 } else if (ret != LDB_SUCCESS) {
409 DEBUG(0, (__location__ " Search of guid %s failed with error code %d\n",
410 GUID_string(mem_ctx, &guid),
411 ret));
412 return WERR_OK;
413 }
414 }
415 la->attid = sa->attributeID_id;
416 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
417
418 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
419 if (!NT_STATUS_IS_OK(status)) {
420 DEBUG(0,(__location__ " No RMD_VERSION in linked attribute '%s' in '%s'\n",
421 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
422 return ntstatus_to_werror(status);
423 }
424 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
425 if (!NT_STATUS_IS_OK(status)) {
426 DEBUG(0,(__location__ " No RMD_CHANGETIME in linked attribute '%s' in '%s'\n",
427 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
428 return ntstatus_to_werror(status);
429 }
430 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
431 if (!NT_STATUS_IS_OK(status)) {
432 DEBUG(0,(__location__ " No RMD_INVOCID in linked attribute '%s' in '%s'\n",
433 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
434 return ntstatus_to_werror(status);
435 }
436 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
437 if (!NT_STATUS_IS_OK(status)) {
438 DEBUG(0,(__location__ " No RMD_ORIGINATING_USN in linked attribute '%s' in '%s'\n",
439 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
440 return ntstatus_to_werror(status);
441 }
442
443 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
444 if (!NT_STATUS_IS_OK(status)) {
445 /* this is possible for upgraded links */
446 la->originating_add_time = la->meta_data.originating_change_time;
447 }
448
449 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
450 W_ERROR_NOT_OK_RETURN(werr);
451
452 (*la_count)++;
453 return WERR_OK;
454 }
455
456
457 /*
458 add linked attributes from an object to the list of linked
459 attributes in a getncchanges request
460 */
461 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
462 TALLOC_CTX *mem_ctx,
463 struct ldb_dn *ncRoot_dn,
464 struct dsdb_schema *schema,
465 uint64_t highest_usn,
466 uint32_t replica_flags,
467 struct ldb_message *msg,
468 struct drsuapi_DsReplicaLinkedAttribute **la_list,
469 uint32_t *la_count,
470 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
471 {
472 unsigned int i;
473 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
474 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
475
476 for (i=0; i<msg->num_elements; i++) {
477 struct ldb_message_element *el = &msg->elements[i];
478 const struct dsdb_attribute *sa;
479 unsigned int j;
480
481 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
482
483 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
484 /* we only want forward links */
485 continue;
486 }
487
488 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
489 /* its an old style link, it will have been
490 * sent in the main replication data */
491 continue;
492 }
493
494 for (j=0; j<el->num_values; j++) {
495 struct dsdb_dn *dsdb_dn;
496 uint64_t local_usn;
497 NTSTATUS status;
498 WERROR werr;
499
500 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
501 if (dsdb_dn == NULL) {
502 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
503 el->name, ldb_dn_get_linearized(msg->dn)));
504 talloc_free(tmp_ctx);
505 return WERR_DS_DRA_INTERNAL_ERROR;
506 }
507
508 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
509 if (!NT_STATUS_IS_OK(status)) {
510 /* this can happen for attributes
511 given to us with old style meta
512 data */
513 continue;
514 }
515
516 if (local_usn > uSNChanged) {
517 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
518 el->name, ldb_dn_get_linearized(msg->dn)));
519 talloc_free(tmp_ctx);
520 return WERR_DS_DRA_INTERNAL_ERROR;
521 }
522
523 if (local_usn < highest_usn) {
524 continue;
525 }
526
527 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
528 dsdb_dn, la_list, la_count);
529 if (!W_ERROR_IS_OK(werr)) {
530 talloc_free(tmp_ctx);
531 return werr;
532 }
533 }
534 }
535
536 talloc_free(tmp_ctx);
537 return WERR_OK;
538 }
539
540 /*
541 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
542 */
543 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
544 struct ldb_dn *ncRoot_dn,
545 struct drsuapi_DsReplicaCursor2CtrEx *udv)
546 {
547 int ret;
548
549 udv->version = 2;
550 udv->reserved1 = 0;
551 udv->reserved2 = 0;
552
553 ret = dsdb_load_udv_v2(sam_ctx, ncRoot_dn, udv, &udv->cursors, &udv->count);
554 if (ret != LDB_SUCCESS) {
555 DEBUG(0,(__location__ ": Failed to load UDV for %s - %s\n",
556 ldb_dn_get_linearized(ncRoot_dn), ldb_errstring(sam_ctx)));
557 return WERR_DS_DRA_INTERNAL_ERROR;
558 }
559
560 return WERR_OK;
561 }
562
563
564 /* comparison function for linked attributes - see CompareLinks() in
565 * MS-DRSR section 4.1.10.5.17 */
566 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
567 const struct drsuapi_DsReplicaLinkedAttribute *la2,
568 struct ldb_context *sam_ctx)
569 {
570 int c;
571 WERROR werr;
572 TALLOC_CTX *tmp_ctx;
573 const struct dsdb_schema *schema;
574 const struct dsdb_attribute *schema_attrib;
575 struct dsdb_dn *dn1, *dn2;
576 struct GUID guid1, guid2;
577 NTSTATUS status;
578
579 c = GUID_compare(&la1->identifier->guid,
580 &la2->identifier->guid);
581 if (c != 0) return c;
582
583 if (la1->attid != la2->attid) {
584 return la1->attid < la2->attid? -1:1;
585 }
586
587 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
588 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
589 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
590 }
591
592 /* we need to get the target GUIDs to compare */
593 tmp_ctx = talloc_new(sam_ctx);
594
595 schema = dsdb_get_schema(sam_ctx, tmp_ctx);
596 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
597
598 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
599 if (!W_ERROR_IS_OK(werr)) {
600 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
601 talloc_free(tmp_ctx);
602 return 0;
603 }
604
605 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
606 if (!W_ERROR_IS_OK(werr)) {
607 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
608 talloc_free(tmp_ctx);
609 return 0;
610 }
611
612 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
613 if (!NT_STATUS_IS_OK(status)) {
614 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
615 talloc_free(tmp_ctx);
616 return 0;
617 }
618 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
619 if (!NT_STATUS_IS_OK(status)) {
620 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
621 talloc_free(tmp_ctx);
622 return 0;
623 }
624
625 talloc_free(tmp_ctx);
626
627 return GUID_compare(&guid1, &guid2);
628 }
629
630 struct drsuapi_changed_objects {
631 struct ldb_dn *dn;
632 struct GUID guid;
633 uint64_t usn;
634 };
635
636 /*
637 sort the objects we send by tree order
638 */
639 static int site_res_cmp_parent_order(struct drsuapi_changed_objects *m1,
640 struct drsuapi_changed_objects *m2)
641 {
642 return ldb_dn_compare(m2->dn, m1->dn);
643 }
644
645 /*
646 sort the objects we send first by uSNChanged
647 */
648 static int site_res_cmp_dn_usn_order(struct drsuapi_changed_objects *m1,
649 struct drsuapi_changed_objects *m2)
650 {
651 unsigned usnchanged1, usnchanged2;
652 unsigned cn1, cn2;
653
654 cn1 = ldb_dn_get_comp_num(m1->dn);
655 cn2 = ldb_dn_get_comp_num(m2->dn);
656 if (cn1 != cn2) {
657 return cn1 > cn2 ? 1 : -1;
658 }
659 usnchanged1 = m1->usn;
660 usnchanged2 = m2->usn;
661 if (usnchanged1 == usnchanged2) {
662 return 0;
663 }
664 return usnchanged1 > usnchanged2 ? 1 : -1;
665 }
666
667
668 /*
669 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
670 */
671 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
672 TALLOC_CTX *mem_ctx,
673 struct drsuapi_DsGetNCChangesRequest10 *req10,
674 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
675 {
676 struct ldb_dn *rid_manager_dn, *fsmo_role_dn, *req_dn;
677 int ret;
678 struct ldb_context *ldb = b_state->sam_ctx;
679 struct ldb_result *ext_res;
680 struct ldb_dn *base_dn;
681 struct dsdb_fsmo_extended_op *exop;
682
683 /*
684 steps:
685 - verify that the DN being asked for is the RID Manager DN
686 - verify that we are the RID Manager
687 */
688
689 /* work out who is the RID Manager */
690 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
691 if (ret != LDB_SUCCESS) {
692 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s\n", ldb_errstring(ldb)));
693 return WERR_DS_DRA_INTERNAL_ERROR;
694 }
695
696 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
697 if (!ldb_dn_validate(req_dn) ||
698 ldb_dn_compare(req_dn, rid_manager_dn) != 0) {
699 /* that isn't the RID Manager DN */
700 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s\n",
701 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
702 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
703 return WERR_OK;
704 }
705
706 /* find the DN of the RID Manager */
707 ret = samdb_reference_dn(ldb, mem_ctx, rid_manager_dn, "fSMORoleOwner", &fsmo_role_dn);
708 if (ret != LDB_SUCCESS) {
709 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s\n",
710 ldb_errstring(ldb)));
711 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
712 return WERR_DS_DRA_INTERNAL_ERROR;
713 }
714
715 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
716 /* we're not the RID Manager - go away */
717 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
718 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
719 return WERR_OK;
720 }
721
722 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
723 W_ERROR_HAVE_NO_MEMORY(exop);
724
725 exop->fsmo_info = req10->fsmo_info;
726 exop->destination_dsa_guid = req10->destination_dsa_guid;
727
728 ret = ldb_transaction_start(ldb);
729 if (ret != LDB_SUCCESS) {
730 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
731 ldb_errstring(ldb)));
732 return WERR_DS_DRA_INTERNAL_ERROR;
733 }
734
735 /*
736 * FIXME (kim): this is a temp hack to return just few object,
737 * but not the whole domain NC.
738 * We should remove this hack and implement a 'scope'
739 * building function to return just the set of object
740 * documented for DRSUAPI_EXOP_FSMO_RID_ALLOC extended_op
741 */
742 ldb_sequence_number(ldb, LDB_SEQ_HIGHEST_SEQ, &req10->highwatermark.highest_usn);
743
744 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
745 if (ret != LDB_SUCCESS) {
746 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
747 ldb_errstring(ldb)));
748 ldb_transaction_cancel(ldb);
749 return WERR_DS_DRA_INTERNAL_ERROR;
750 }
751
752 ret = ldb_transaction_commit(ldb);
753 if (ret != LDB_SUCCESS) {
754 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
755 ldb_errstring(ldb)));
756 return WERR_DS_DRA_INTERNAL_ERROR;
757 }
758
759 talloc_free(ext_res);
760
761 base_dn = ldb_get_default_basedn(ldb);
762
763 DEBUG(2,("Allocated RID pool for server %s\n",
764 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
765
766 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
767
768 return WERR_OK;
769 }
770
771 /*
772 return an array of SIDs from a ldb_message given an attribute name
773 assumes the SIDs are in extended DN format
774 */
775 static WERROR samdb_result_sid_array_dn(struct ldb_context *sam_ctx,
776 struct ldb_message *msg,
777 TALLOC_CTX *mem_ctx,
778 const char *attr,
779 const struct dom_sid ***sids)
780 {
781 struct ldb_message_element *el;
782 unsigned int i;
783
784 el = ldb_msg_find_element(msg, attr);
785 if (!el) {
786 *sids = NULL;
787 return WERR_OK;
788 }
789
790 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
791 W_ERROR_HAVE_NO_MEMORY(*sids);
792
793 for (i=0; i<el->num_values; i++) {
794 struct ldb_dn *dn = ldb_dn_from_ldb_val(mem_ctx, sam_ctx, &el->values[i]);
795 NTSTATUS status;
796 struct dom_sid *sid;
797
798 sid = talloc(*sids, struct dom_sid);
799 W_ERROR_HAVE_NO_MEMORY(sid);
800 status = dsdb_get_extended_dn_sid(dn, sid, "SID");
801 if (!NT_STATUS_IS_OK(status)) {
802 return WERR_INTERNAL_DB_CORRUPTION;
803 }
804 (*sids)[i] = sid;
805 }
806 (*sids)[i] = NULL;
807
808 return WERR_OK;
809 }
810
811
812 /*
813 return an array of SIDs from a ldb_message given an attribute name
814 assumes the SIDs are in NDR form
815 */
816 static WERROR samdb_result_sid_array_ndr(struct ldb_context *sam_ctx,
817 struct ldb_message *msg,
818 TALLOC_CTX *mem_ctx,
819 const char *attr,
820 const struct dom_sid ***sids)
821 {
822 struct ldb_message_element *el;
823 unsigned int i;
824
825 el = ldb_msg_find_element(msg, attr);
826 if (!el) {
827 *sids = NULL;
828 return WERR_OK;
829 }
830
831 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
832 W_ERROR_HAVE_NO_MEMORY(*sids);
833
834 for (i=0; i<el->num_values; i++) {
835 enum ndr_err_code ndr_err;
836 struct dom_sid *sid;
837
838 sid = talloc(*sids, struct dom_sid);
839 W_ERROR_HAVE_NO_MEMORY(sid);
840
841 ndr_err = ndr_pull_struct_blob(&el->values[i], sid, sid,
842 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
843 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
844 return WERR_INTERNAL_DB_CORRUPTION;
845 }
846 (*sids)[i] = sid;
847 }
848 (*sids)[i] = NULL;
849
850 return WERR_OK;
851 }
852
853 /*
854 see if any SIDs in list1 are in list2
855 */
856 static bool sid_list_match(const struct dom_sid **list1, const struct dom_sid **list2)
857 {
858 unsigned int i, j;
859 /* do we ever have enough SIDs here to worry about O(n^2) ? */
860 for (i=0; list1[i]; i++) {
861 for (j=0; list2[j]; j++) {
862 if (dom_sid_equal(list1[i], list2[j])) {
863 return true;
864 }
865 }
866 }
867 return false;
868 }
869
870 /*
871 handle a DRSUAPI_EXOP_REPL_SECRET call
872 */
873 static WERROR getncchanges_repl_secret(struct drsuapi_bind_state *b_state,
874 TALLOC_CTX *mem_ctx,
875 struct drsuapi_DsGetNCChangesRequest10 *req10,
876 struct dom_sid *user_sid,
877 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
878 {
879 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
880 struct ldb_dn *obj_dn, *rodc_dn, *krbtgt_link_dn;
881 int ret;
882 const char *rodc_attrs[] = { "msDS-KrbTgtLink", "msDS-NeverRevealGroup", "msDS-RevealOnDemandGroup", NULL };
883 const char *obj_attrs[] = { "tokenGroups", "objectSid", "UserAccountControl", "msDS-KrbTgtLinkBL", NULL };
884 struct ldb_result *rodc_res, *obj_res;
885 const struct dom_sid **never_reveal_sids, **reveal_sids, **token_sids;
886 WERROR werr;
887
888 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_SECRET extended op on %s\n",
889 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
890
891 /*
892 * we need to work out if we will allow this RODC to
893 * replicate the secrets for this object
894 *
895 * see 4.1.10.5.14 GetRevealSecretsPolicyForUser for details
896 * of this function
897 */
898
899 if (b_state->sam_ctx_system == NULL) {
900 /* this operation needs system level access */
901 ctr6->extended_ret = DRSUAPI_EXOP_ERR_ACCESS_DENIED;
902 return WERR_DS_DRA_SOURCE_DISABLED;
903 }
904
905 obj_dn = drs_ObjectIdentifier_to_dn(mem_ctx, b_state->sam_ctx_system, ncRoot);
906 if (!ldb_dn_validate(obj_dn)) goto failed;
907
908 rodc_dn = ldb_dn_new_fmt(mem_ctx, b_state->sam_ctx_system, "<SID=%s>",
909 dom_sid_string(mem_ctx, user_sid));
910 if (!ldb_dn_validate(rodc_dn)) goto failed;
911
912 /* do the two searches we need */
913 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &rodc_res, rodc_dn, rodc_attrs,
914 DSDB_SEARCH_SHOW_EXTENDED_DN);
915 if (ret != LDB_SUCCESS || rodc_res->count != 1) goto failed;
916
917 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &obj_res, obj_dn, obj_attrs, 0);
918 if (ret != LDB_SUCCESS || obj_res->count != 1) goto failed;
919
920 /* if the object SID is equal to the user_sid, allow */
921 if (dom_sid_equal(user_sid,
922 samdb_result_dom_sid(mem_ctx, obj_res->msgs[0], "objectSid"))) {
923 goto allowed;
924 }
925
926 /* an RODC is allowed to get its own krbtgt account secrets */
927 krbtgt_link_dn = samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
928 rodc_res->msgs[0], "msDS-KrbTgtLink", NULL);
929 if (krbtgt_link_dn != NULL &&
930 ldb_dn_compare(obj_dn, krbtgt_link_dn) == 0) {
931 goto allowed;
932 }
933
934 /* but it isn't allowed to get anyone elses krbtgt secrets */
935 if (samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
936 obj_res->msgs[0], "msDS-KrbTgtLinkBL", NULL)) {
937 goto denied;
938 }
939
940 if (ldb_msg_find_attr_as_uint(obj_res->msgs[0],
941 "userAccountControl", 0) &
942 UF_INTERDOMAIN_TRUST_ACCOUNT) {
943 goto denied;
944 }
945
946 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
947 mem_ctx, "msDS-NeverRevealGroup", &never_reveal_sids);
948 if (!W_ERROR_IS_OK(werr)) {
949 goto denied;
950 }
951
952 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
953 mem_ctx, "msDS-RevealOnDemandGroup", &reveal_sids);
954 if (!W_ERROR_IS_OK(werr)) {
955 goto denied;
956 }
957
958 werr = samdb_result_sid_array_ndr(b_state->sam_ctx_system, obj_res->msgs[0],
959 mem_ctx, "tokenGroups", &token_sids);
960 if (!W_ERROR_IS_OK(werr) || token_sids==NULL) {
961 goto denied;
962 }
963
964 if (never_reveal_sids &&
965 sid_list_match(token_sids, never_reveal_sids)) {
966 goto denied;
967 }
968
969 if (reveal_sids &&
970 sid_list_match(token_sids, reveal_sids)) {
971 goto allowed;
972 }
973
974 /* default deny */
975 denied:
976 DEBUG(2,(__location__ ": Denied RODC secret replication for %s by RODC %s\n",
977 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
978 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
979 return WERR_DS_DRA_ACCESS_DENIED;
980
981 allowed:
982 DEBUG(2,(__location__ ": Allowed RODC secret replication for %s by RODC %s\n",
983 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
984 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
985 req10->highwatermark.highest_usn = 0;
986 return WERR_OK;
987
988 failed:
989 DEBUG(2,(__location__ ": Failed RODC secret replication for %s by RODC %s\n",
990 ldb_dn_get_linearized(obj_dn), dom_sid_string(mem_ctx, user_sid)));
991 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
992 return WERR_DS_DRA_BAD_DN;
993 }
994
995
996 /*
997 handle a DRSUAPI_EXOP_REPL_OBJ call
998 */
999 static WERROR getncchanges_repl_obj(struct drsuapi_bind_state *b_state,
1000 TALLOC_CTX *mem_ctx,
1001 struct drsuapi_DsGetNCChangesRequest10 *req10,
1002 struct dom_sid *user_sid,
1003 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
1004 {
1005 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
1006
1007 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_OBJ extended op on %s\n",
1008 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1009
1010 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1011 req10->highwatermark.highest_usn = 0;
1012 return WERR_OK;
1013 }
1014
1015
1016 /*
1017 handle DRSUAPI_EXOP_FSMO_REQ_ROLE,
1018 DRSUAPI_EXOP_FSMO_RID_REQ_ROLE,
1019 and DRSUAPI_EXOP_FSMO_REQ_PDC calls
1020 */
1021 static WERROR getncchanges_change_master(struct drsuapi_bind_state *b_state,
1022 TALLOC_CTX *mem_ctx,
1023 struct drsuapi_DsGetNCChangesRequest10 *req10,
1024 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
1025 {
1026 struct ldb_dn *fsmo_role_dn, *req_dn, *ntds_dn;
1027 int ret;
1028 unsigned int i;
1029 struct ldb_context *ldb = b_state->sam_ctx;
1030 struct ldb_message *msg;
1031
1032 /*
1033 steps:
1034 - verify that the client dn exists
1035 - verify that we are the current master
1036 */
1037
1038 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
1039 if (!ldb_dn_validate(req_dn)) {
1040 /* that is not a valid dn */
1041 DEBUG(0,(__location__ ": FSMO role transfer request for invalid DN %s\n",
1042 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
1043 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
1044 return WERR_OK;
1045 }
1046
1047 /* retrieve the current role owner */
1048 ret = samdb_reference_dn(ldb, mem_ctx, req_dn, "fSMORoleOwner", &fsmo_role_dn);
1049 if (ret != LDB_SUCCESS) {
1050 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in context - %s\n",
1051 ldb_errstring(ldb)));
1052 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1053 return WERR_DS_DRA_INTERNAL_ERROR;
1054 }
1055
1056 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
1057 /* we're not the current owner - go away */
1058 DEBUG(0,(__location__ ": FSMO transfer request when not owner\n"));
1059 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1060 return WERR_OK;
1061 }
1062
1063 /* change the current master */
1064 msg = ldb_msg_new(ldb);
1065 W_ERROR_HAVE_NO_MEMORY(msg);
1066 msg->dn = drs_ObjectIdentifier_to_dn(msg, ldb, req10->naming_context);
1067 W_ERROR_HAVE_NO_MEMORY(msg->dn);
1068
1069 /* TODO: make sure ntds_dn is a valid nTDSDSA object */
1070 ret = dsdb_find_dn_by_guid(ldb, msg, &req10->destination_dsa_guid, &ntds_dn);
1071 if (ret != LDB_SUCCESS) {
1072 DEBUG(0, (__location__ ": Unable to find NTDS object for guid %s - %s\n",
1073 GUID_string(mem_ctx, &req10->destination_dsa_guid), ldb_errstring(ldb)));
1074 talloc_free(msg);
1075 ctr6->extended_ret = DRSUAPI_EXOP_ERR_UNKNOWN_CALLER;
1076 return WERR_OK;
1077 }
1078
1079 ret = ldb_msg_add_string(msg, "fSMORoleOwner", ldb_dn_get_linearized(ntds_dn));
1080 if (ret != 0) {
1081 talloc_free(msg);
1082 return WERR_DS_DRA_INTERNAL_ERROR;
1083 }
1084
1085 for (i=0;i<msg->num_elements;i++) {
1086 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
1087 }
1088
1089 ret = ldb_transaction_start(ldb);
1090 if (ret != LDB_SUCCESS) {
1091 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
1092 ldb_errstring(ldb)));
1093 return WERR_DS_DRA_INTERNAL_ERROR;
1094 }
1095
1096 ret = ldb_modify(ldb, msg);
1097 if (ret != LDB_SUCCESS) {
1098 DEBUG(0,(__location__ ": Failed to change current owner - %s\n",
1099 ldb_errstring(ldb)));
1100 ldb_transaction_cancel(ldb);
1101 return WERR_DS_DRA_INTERNAL_ERROR;
1102 }
1103
1104 ret = ldb_transaction_commit(ldb);
1105 if (ret != LDB_SUCCESS) {
1106 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
1107 ldb_errstring(ldb)));
1108 return WERR_DS_DRA_INTERNAL_ERROR;
1109 }
1110
1111 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1112
1113 return WERR_OK;
1114 }
1115
1116 /* state of a partially completed getncchanges call */
1117 struct drsuapi_getncchanges_state {
1118 struct GUID *guids;
1119 uint32_t num_records;
1120 uint32_t num_processed;
1121 struct ldb_dn *ncRoot_dn;
1122 bool is_schema_nc;
1123 uint64_t min_usn;
1124 uint64_t highest_usn;
1125 struct ldb_dn *last_dn;
1126 struct drsuapi_DsReplicaLinkedAttribute *la_list;
1127 uint32_t la_count;
1128 bool la_sorted;
1129 uint32_t la_idx;
1130 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector;
1131 };
1132
1133 /*
1134 see if this getncchanges request includes a request to reveal secret information
1135 */
1136 static WERROR dcesrv_drsuapi_is_reveal_secrets_request(struct drsuapi_bind_state *b_state,
1137 struct drsuapi_DsGetNCChangesRequest10 *req10,
1138 bool *is_secret_request)
1139 {
1140 enum drsuapi_DsExtendedOperation exop;
1141 uint32_t i;
1142 struct dsdb_schema *schema;
1143
1144 *is_secret_request = true;
1145
1146 exop = req10->extended_op;
1147
1148 switch (exop) {
1149 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1150 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1151 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1152 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1153 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1154 /* FSMO exops can reveal secrets */
1155 *is_secret_request = true;
1156 return WERR_OK;
1157 case DRSUAPI_EXOP_REPL_SECRET:
1158 case DRSUAPI_EXOP_REPL_OBJ:
1159 case DRSUAPI_EXOP_NONE:
1160 break;
1161 }
1162
1163 if (req10->replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
1164 *is_secret_request = false;
1165 return WERR_OK;
1166 }
1167
1168 if (exop == DRSUAPI_EXOP_REPL_SECRET ||
1169 req10->partial_attribute_set == NULL) {
1170 /* they want secrets */
1171 *is_secret_request = true;
1172 return WERR_OK;
1173 }
1174
1175 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1176
1177 /* check the attributes they asked for */
1178 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1179 const struct dsdb_attribute *sa;
1180 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1181 if (sa == NULL) {
1182 return WERR_DS_DRA_SCHEMA_MISMATCH;
1183 }
1184 if (!dsdb_attr_in_rodc_fas(sa)) {
1185 *is_secret_request = true;
1186 return WERR_OK;
1187 }
1188 }
1189
1190 if (req10->partial_attribute_set_ex) {
1191 /* check the extended attributes they asked for */
1192 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1193 const struct dsdb_attribute *sa;
1194 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1195 if (sa == NULL) {
1196 return WERR_DS_DRA_SCHEMA_MISMATCH;
1197 }
1198 if (!dsdb_attr_in_rodc_fas(sa)) {
1199 *is_secret_request = true;
1200 return WERR_OK;
1201 }
1202 }
1203 }
1204
1205 *is_secret_request = false;
1206 return WERR_OK;
1207 }
1208
1209 /*
1210 see if this getncchanges request is only for attributes in the GC
1211 partial attribute set
1212 */
1213 static WERROR dcesrv_drsuapi_is_gc_pas_request(struct drsuapi_bind_state *b_state,
1214 struct drsuapi_DsGetNCChangesRequest10 *req10,
1215 bool *is_gc_pas_request)
1216 {
1217 enum drsuapi_DsExtendedOperation exop;
1218 uint32_t i;
1219 struct dsdb_schema *schema;
1220
1221 exop = req10->extended_op;
1222
1223 switch (exop) {
1224 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1225 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1226 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1227 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1228 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1229 case DRSUAPI_EXOP_REPL_SECRET:
1230 *is_gc_pas_request = false;
1231 return WERR_OK;
1232 case DRSUAPI_EXOP_REPL_OBJ:
1233 case DRSUAPI_EXOP_NONE:
1234 break;
1235 }
1236
1237 if (req10->partial_attribute_set == NULL) {
1238 /* they want it all */
1239 *is_gc_pas_request = false;
1240 return WERR_OK;
1241 }
1242
1243 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1244
1245 /* check the attributes they asked for */
1246 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1247 const struct dsdb_attribute *sa;
1248 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1249 if (sa == NULL) {
1250 return WERR_DS_DRA_SCHEMA_MISMATCH;
1251 }
1252 if (!sa->isMemberOfPartialAttributeSet) {
1253 *is_gc_pas_request = false;
1254 return WERR_OK;
1255 }
1256 }
1257
1258 if (req10->partial_attribute_set_ex) {
1259 /* check the extended attributes they asked for */
1260 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1261 const struct dsdb_attribute *sa;
1262 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1263 if (sa == NULL) {
1264 return WERR_DS_DRA_SCHEMA_MISMATCH;
1265 }
1266 if (!sa->isMemberOfPartialAttributeSet) {
1267 *is_gc_pas_request = false;
1268 return WERR_OK;
1269 }
1270 }
1271 }
1272
1273 *is_gc_pas_request = true;
1274 return WERR_OK;
1275 }
1276
1277
1278 /*
1279 map from req8 to req10
1280 */
1281 static struct drsuapi_DsGetNCChangesRequest10 *
1282 getncchanges_map_req8(TALLOC_CTX *mem_ctx,
1283 struct drsuapi_DsGetNCChangesRequest8 *req8)
1284 {
1285 struct drsuapi_DsGetNCChangesRequest10 *req10 = talloc_zero(mem_ctx,
1286 struct drsuapi_DsGetNCChangesRequest10);
1287 if (req10 == NULL) {
1288 return NULL;
1289 }
1290
1291 req10->destination_dsa_guid = req8->destination_dsa_guid;
1292 req10->source_dsa_invocation_id = req8->source_dsa_invocation_id;
1293 req10->naming_context = req8->naming_context;
1294 req10->highwatermark = req8->highwatermark;
1295 req10->uptodateness_vector = req8->uptodateness_vector;
1296 req10->replica_flags = req8->replica_flags;
1297 req10->max_object_count = req8->max_object_count;
1298 req10->max_ndr_size = req8->max_ndr_size;
1299 req10->extended_op = req8->extended_op;
1300 req10->fsmo_info = req8->fsmo_info;
1301 req10->partial_attribute_set = req8->partial_attribute_set;
1302 req10->partial_attribute_set_ex = req8->partial_attribute_set_ex;
1303 req10->mapping_ctr = req8->mapping_ctr;
1304
1305 return req10;
1306 }
1307
1308
1309 /**
1310 * Collects object for normal replication cycle.
1311 */
1312 static WERROR getncchanges_collect_objects(struct drsuapi_bind_state *b_state,
1313 TALLOC_CTX *mem_ctx,
1314 struct drsuapi_DsGetNCChangesRequest10 *req10,
1315 struct ldb_dn *search_dn,
1316 const char *extra_filter,
1317 struct ldb_result **search_res)
1318 {
1319 int ret;
1320 char* search_filter;
1321 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
1322 //const char *extra_filter;
1323 struct drsuapi_getncchanges_state *getnc_state = b_state->getncchanges_state;
1324 const char *attrs[] = { "uSNChanged",
1325 "objectGUID" ,
1326 NULL };
1327
1328 if (req10->extended_op == DRSUAPI_EXOP_REPL_OBJ ||
1329 req10->extended_op == DRSUAPI_EXOP_REPL_SECRET) {
1330 scope = LDB_SCOPE_BASE;
1331 }
1332
1333 //extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1334
1335 //getnc_state->min_usn = req10->highwatermark.highest_usn;
1336
1337 /* Construct response. */
1338 search_filter = talloc_asprintf(mem_ctx,
1339 "(uSNChanged>=%llu)",
1340 (unsigned long long)(getnc_state->min_usn+1));
1341
1342 if (extra_filter) {
1343 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
1344 }
1345
1346 if (req10->replica_flags & DRSUAPI_DRS_CRITICAL_ONLY) {
1347 search_filter = talloc_asprintf(mem_ctx,
1348 "(&%s(isCriticalSystemObject=TRUE))",
1349 search_filter);
1350 }
1351
1352 if (req10->replica_flags & DRSUAPI_DRS_ASYNC_REP) {
1353 scope = LDB_SCOPE_BASE;
1354 }
1355
1356 if (!search_dn) {
1357 search_dn = getnc_state->ncRoot_dn;
1358 }
1359
1360 DEBUG(2,(__location__ ": getncchanges on %s using filter %s\n",
1361 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
1362 ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, getnc_state, search_res,
1363 search_dn, scope, attrs,
1364 search_filter);
1365 if (ret != LDB_SUCCESS) {
1366 return WERR_DS_DRA_INTERNAL_ERROR;
1367 }
1368
1369 return WERR_OK;
1370 }
1371
1372 /**
1373 * Collects object for normal replication cycle.
1374 */
1375 static WERROR getncchanges_collect_objects_exop(struct drsuapi_bind_state *b_state,
1376 TALLOC_CTX *mem_ctx,
1377 struct drsuapi_DsGetNCChangesRequest10 *req10,
1378 struct drsuapi_DsGetNCChangesCtr6 *ctr6,
1379 struct ldb_dn *search_dn,
1380 const char *extra_filter,
1381 struct ldb_result **search_res)
1382 {
1383 /* we have nothing to do in case of ex-op failure */
1384 if (ctr6->extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
1385 return WERR_OK;
1386 }
1387
1388 /* TODO: implement extended op specific collection
1389 * of objects. Right now we just normal procedure
1390 * for collecting objects */
1391 return getncchanges_collect_objects(b_state, mem_ctx, req10, search_dn, extra_filter, search_res);
1392 }
1393
1394 /*
1395 drsuapi_DsGetNCChanges
1396
1397 see MS-DRSR 4.1.10.5.2 for basic logic of this function
1398 */
1399 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
1400 struct drsuapi_DsGetNCChanges *r)
1401 {
1402 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
1403 int ret;
1404 uint32_t i;
1405 struct dsdb_schema *schema;
1406 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
1407 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
1408 NTSTATUS status;
1409 DATA_BLOB session_key;
1410 WERROR werr;
1411 struct dcesrv_handle *h;
1412 struct drsuapi_bind_state *b_state;
1413 struct drsuapi_getncchanges_state *getnc_state;
1414 struct drsuapi_DsGetNCChangesRequest10 *req10;
1415 uint32_t options;
1416 uint32_t max_objects;
1417 uint32_t max_links;
1418 uint32_t link_count = 0;
1419 uint32_t link_total = 0;
1420 uint32_t link_given = 0;
1421 struct ldb_dn *search_dn = NULL;
1422 bool am_rodc, null_scope=false;
1423 enum security_user_level security_level;
1424 struct ldb_context *sam_ctx;
1425 struct dom_sid *user_sid;
1426 bool is_secret_request;
1427 bool is_gc_pas_request;
1428 struct drsuapi_changed_objects *changes;
1429
1430 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
1431 b_state = h->data;
1432
1433 sam_ctx = b_state->sam_ctx_system?b_state->sam_ctx_system:b_state->sam_ctx;
1434
1435 *r->out.level_out = 6;
1436 /* TODO: linked attributes*/
1437 r->out.ctr->ctr6.linked_attributes_count = 0;
1438 r->out.ctr->ctr6.linked_attributes = NULL;
1439
1440 r->out.ctr->ctr6.object_count = 0;
1441 r->out.ctr->ctr6.nc_object_count = 0;
1442 r->out.ctr->ctr6.more_data = false;
1443 r->out.ctr->ctr6.uptodateness_vector = NULL;
1444
1445 /* a RODC doesn't allow for any replication */
1446 ret = samdb_rodc(sam_ctx, &am_rodc);
1447 if (ret == LDB_SUCCESS && am_rodc) {
1448 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
1449 return WERR_DS_DRA_SOURCE_DISABLED;
1450 }
1451
1452 /* Check request revision.
1453 */
1454 switch (r->in.level) {
1455 case 8:
1456 req10 = getncchanges_map_req8(mem_ctx, &r->in.req->req8);
1457 if (req10 == NULL) {
1458 return WERR_NOMEM;
1459 }
1460 break;
1461 case 10:
1462 req10 = &r->in.req->req10;
1463 break;
1464 default:
1465 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
1466 r->in.level));
1467 return WERR_REVISION_MISMATCH;
1468 }
1469
1470
1471 /* Perform access checks. */
1472 /* TODO: we need to support a sync on a specific non-root
1473 * DN. We'll need to find the real partition root here */
1474 ncRoot = req10->naming_context;
1475 if (ncRoot == NULL) {
1476 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
1477 return WERR_DS_DRA_INVALID_PARAMETER;
1478 }
1479
1480 if (samdb_ntds_options(sam_ctx, &options) != LDB_SUCCESS) {
1481 return WERR_DS_DRA_INTERNAL_ERROR;
1482 }
1483
1484 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
1485 !(req10->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
1486 return WERR_DS_DRA_SOURCE_DISABLED;
1487 }
1488
1489 user_sid = &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
1490
1491 /* all clients must have GUID_DRS_GET_CHANGES */
1492 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1493 mem_ctx,
1494 dce_call->conn->auth_state.session_info->security_token,
1495 req10->naming_context,
1496 GUID_DRS_GET_CHANGES);
1497 if (!W_ERROR_IS_OK(werr)) {
1498 return werr;
1499 }
1500
1501 /* allowed if the GC PAS and client has
1502 GUID_DRS_GET_FILTERED_ATTRIBUTES */
1503 werr = dcesrv_drsuapi_is_gc_pas_request(b_state, req10, &is_gc_pas_request);
1504 if (!W_ERROR_IS_OK(werr)) {
1505 return werr;
1506 }
1507 if (is_gc_pas_request) {
1508 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1509 mem_ctx,
1510 dce_call->conn->auth_state.session_info->security_token,
1511 req10->naming_context,
1512 GUID_DRS_GET_FILTERED_ATTRIBUTES);
1513 if (W_ERROR_IS_OK(werr)) {
1514 goto allowed;
1515 }
1516 }
1517
1518 werr = dcesrv_drsuapi_is_reveal_secrets_request(b_state, req10, &is_secret_request);
1519 if (!W_ERROR_IS_OK(werr)) {
1520 return werr;
1521 }
1522 if (is_secret_request && req10->extended_op != DRSUAPI_EXOP_REPL_SECRET) {
1523 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1524 mem_ctx,
1525 dce_call->conn->auth_state.session_info->security_token,
1526 req10->naming_context,
1527 GUID_DRS_GET_ALL_CHANGES);
1528 if (!W_ERROR_IS_OK(werr)) {
1529 return werr;
1530 }
1531 }
1532
1533 allowed:
1534 /* for non-administrator replications, check that they have
1535 given the correct source_dsa_invocation_id */
1536 security_level = security_session_user_level(dce_call->conn->auth_state.session_info,
1537 samdb_domain_sid(sam_ctx));
1538 if (security_level == SECURITY_RO_DOMAIN_CONTROLLER) {
1539 if (req10->replica_flags & DRSUAPI_DRS_WRIT_REP) {
1540 /* we rely on this flag being unset for RODC requests */
1541 req10->replica_flags &= ~DRSUAPI_DRS_WRIT_REP;
1542 }
1543 }
1544
1545 if (req10->replica_flags & DRSUAPI_DRS_FULL_SYNC_PACKET) {
1546 /* Ignore the _in_ uptpdateness vector*/
1547 req10->uptodateness_vector = NULL;
1548 }
1549
1550 getnc_state = b_state->getncchanges_state;
1551
1552 /* see if a previous replication has been abandoned */
1553 if (getnc_state) {
1554 struct ldb_dn *new_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1555 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
1556 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
1557 ldb_dn_get_linearized(new_dn),
1558 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
1559 ldb_dn_get_linearized(getnc_state->last_dn)));
1560 talloc_free(getnc_state);
1561 getnc_state = NULL;
1562 }
1563 }
1564
1565 if (getnc_state == NULL) {
1566 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
1567 if (getnc_state == NULL) {
1568 return WERR_NOMEM;
1569 }
1570 b_state->getncchanges_state = getnc_state;
1571 getnc_state->ncRoot_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1572
1573 /* find out if we are to replicate Schema NC */
1574 ret = ldb_dn_compare(getnc_state->ncRoot_dn,
1575 ldb_get_schema_basedn(b_state->sam_ctx));
1576 getnc_state->is_schema_nc = (0 == ret);
1577
1578 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1579 r->out.ctr->ctr6.extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1580 }
1581
1582 /*
1583 * This is the first replication cycle and it is
1584 * a good place to handle extended operations
1585 *
1586 * FIXME: we don't fully support extended operations yet
1587 */
1588 switch (req10->extended_op) {
1589 case DRSUAPI_EXOP_NONE:
1590 break;
1591 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1592 werr = getncchanges_rid_alloc(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1593 W_ERROR_NOT_OK_RETURN(werr);
1594 search_dn = ldb_get_default_basedn(sam_ctx);
1595 break;
1596 case DRSUAPI_EXOP_REPL_SECRET:
1597 werr = getncchanges_repl_secret(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1598 r->out.result = werr;
1599 W_ERROR_NOT_OK_RETURN(werr);
1600 break;
1601 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1602 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1603 W_ERROR_NOT_OK_RETURN(werr);
1604 break;
1605 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1606 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1607 W_ERROR_NOT_OK_RETURN(werr);
1608 break;
1609 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1610 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1611 W_ERROR_NOT_OK_RETURN(werr);
1612 break;
1613 case DRSUAPI_EXOP_REPL_OBJ:
1614 werr = getncchanges_repl_obj(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1615 r->out.result = werr;
1616 W_ERROR_NOT_OK_RETURN(werr);
1617 break;
1618
1619 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1620
1621 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
1622 (unsigned)req10->extended_op));
1623 return WERR_DS_DRA_NOT_SUPPORTED;
1624 }
1625 }
1626
1627 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
1628 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
1629 DEBUG(0,(__location__ ": Bad DN '%s'\n",
1630 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1631 return WERR_DS_DRA_INVALID_PARAMETER;
1632 }
1633
1634 /* we need the session key for encrypting password attributes */
1635 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
1636 if (!NT_STATUS_IS_OK(status)) {
1637 DEBUG(0,(__location__ ": Failed to get session key\n"));
1638 return WERR_DS_DRA_INTERNAL_ERROR;
1639 }
1640
1641 /*
1642 TODO: MS-DRSR section 4.1.10.1.1
1643 Work out if this is the start of a new cycle */
1644
1645 if (getnc_state->guids == NULL) {
1646 const char *extra_filter;
1647 struct ldb_result *search_res = NULL;
1648
1649 extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1650
1651 getnc_state->min_usn = req10->highwatermark.highest_usn;
1652
1653 if (req10->extended_op == DRSUAPI_EXOP_NONE) {
1654 werr = getncchanges_collect_objects(b_state, mem_ctx, req10,
1655 search_dn, extra_filter,
1656 &search_res);
1657 } else {
1658 werr = getncchanges_collect_objects_exop(b_state, mem_ctx, req10,
1659 &r->out.ctr->ctr6,
1660 search_dn, extra_filter,
1661 &search_res);
1662 }
1663 W_ERROR_NOT_OK_RETURN(werr);
1664
1665 /* extract out the GUIDs list */
1666 getnc_state->num_records = search_res ? search_res->count : 0;
1667 getnc_state->guids = talloc_array(getnc_state, struct GUID, getnc_state->num_records);
1668 W_ERROR_HAVE_NO_MEMORY(getnc_state->guids);
1669
1670 changes = talloc_array(getnc_state,
1671 struct drsuapi_changed_objects,
1672 getnc_state->num_records);
1673 W_ERROR_HAVE_NO_MEMORY(changes);
1674
1675 for (i=0; i<getnc_state->num_records; i++) {
1676 changes[i].dn = search_res->msgs[i]->dn;
1677 changes[i].guid = samdb_result_guid(search_res->msgs[i], "objectGUID");
1678 changes[i].usn = ldb_msg_find_attr_as_uint64(search_res->msgs[i], "uSNChanged", 0);
1679 }
1680
1681 if (req10->replica_flags & DRSUAPI_DRS_GET_ANC) {
1682 TYPESAFE_QSORT(changes,
1683 getnc_state->num_records,
1684 site_res_cmp_parent_order);
1685 } else {
1686 TYPESAFE_QSORT(changes,
1687 getnc_state->num_records,
1688 site_res_cmp_dn_usn_order);
1689 }
1690
1691 getnc_state->uptodateness_vector = talloc_steal(getnc_state, req10->uptodateness_vector);
1692 if (getnc_state->uptodateness_vector) {
1693 /* make sure its sorted */
1694 TYPESAFE_QSORT(getnc_state->uptodateness_vector->cursors,
1695 getnc_state->uptodateness_vector->count,
1696 drsuapi_DsReplicaCursor_compare);
1697 }
1698
1699 for (i=0; i < getnc_state->num_records; i++) {
1700 getnc_state->guids[i] = changes[i].guid;
1701 if (GUID_all_zero(&getnc_state->guids[i])) {
1702 DEBUG(2,("getncchanges: bad objectGUID from %s\n",
1703 ldb_dn_get_linearized(search_res->msgs[i]->dn)));
1704 return WERR_DS_DRA_INTERNAL_ERROR;
1705 }
1706 }
1707
1708 talloc_free(search_res);
1709 talloc_free(changes);
1710 }
1711
1712 /* Prefix mapping */
1713 schema = dsdb_get_schema(sam_ctx, mem_ctx);
1714 if (!schema) {
1715 DEBUG(0,("No schema in sam_ctx\n"));
1716 return WERR_DS_DRA_INTERNAL_ERROR;
1717 }
1718
1719 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
1720 *r->out.ctr->ctr6.naming_context = *ncRoot;
1721
1722 if (dsdb_find_guid_by_dn(sam_ctx, getnc_state->ncRoot_dn,
1723 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
1724 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
1725 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
1726 return WERR_DS_DRA_INTERNAL_ERROR;
1727 }
1728
1729 /* find the SID if there is one */
1730 dsdb_find_sid_by_dn(sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
1731
1732 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
1733 r->out.ctr->ctr6.mapping_ctr = *ctr;
1734
1735 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(sam_ctx));
1736 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(sam_ctx));
1737
1738 r->out.ctr->ctr6.old_highwatermark = req10->highwatermark;
1739 r->out.ctr->ctr6.new_highwatermark = req10->highwatermark;
1740
1741 r->out.ctr->ctr6.first_object = NULL;
1742 currentObject = &r->out.ctr->ctr6.first_object;
1743
1744 /* use this to force single objects at a time, which is useful
1745 * for working out what object is giving problems
1746 */
1747 max_objects = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
1748 if (req10->max_object_count < max_objects) {
1749 max_objects = req10->max_object_count;
1750 }
1751 /*
1752 * TODO: work out how the maximum should be calculated
1753 */
1754 max_links = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max link sync", 1500);
1755
1756 for (i=getnc_state->num_processed;
1757 i<getnc_state->num_records &&
1758 !null_scope &&
1759 (r->out.ctr->ctr6.object_count < max_objects);
1760 i++) {
1761 int uSN;
1762 struct drsuapi_DsReplicaObjectListItemEx *obj;
1763 struct ldb_message *msg;
1764 static const char * const msg_attrs[] = {
1765 "*",
1766 "nTSecurityDescriptor",
1767 "parentGUID",
1768 "replPropertyMetaData",
1769 DSDB_SECRET_ATTRIBUTES,
1770 NULL };
1771 struct ldb_result *msg_res;
1772 struct ldb_dn *msg_dn;
1773
1774 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
1775 W_ERROR_HAVE_NO_MEMORY(obj);
1776
1777 msg_dn = ldb_dn_new_fmt(obj, sam_ctx, "<GUID=%s>", GUID_string(obj, &getnc_state->guids[i]));
1778 W_ERROR_HAVE_NO_MEMORY(msg_dn);
1779
1780
1781 /* by re-searching here we avoid having a lot of full
1782 * records in memory between calls to getncchanges
1783 */
1784 ret = drsuapi_search_with_extended_dn(sam_ctx, obj, &msg_res,
1785 msg_dn,
1786 LDB_SCOPE_BASE, msg_attrs, NULL);
1787 if (ret != LDB_SUCCESS) {
1788 if (ret != LDB_ERR_NO_SUCH_OBJECT) {
1789 DEBUG(1,("getncchanges: failed to fetch DN %s - %s\n",
1790 ldb_dn_get_extended_linearized(obj, msg_dn, 1), ldb_errstring(sam_ctx)));
1791 }
1792 talloc_free(obj);
1793 continue;
1794 }
1795
1796 msg = msg_res->msgs[0];
1797
1798 werr = get_nc_changes_build_object(obj, msg,
1799 sam_ctx, getnc_state->ncRoot_dn,
1800 getnc_state->is_schema_nc,
1801 schema, &session_key, getnc_state->min_usn,
1802 req10->replica_flags,
1803 req10->partial_attribute_set,
1804 getnc_state->uptodateness_vector,
1805 req10->extended_op);
1806 if (!W_ERROR_IS_OK(werr)) {
1807 return werr;
1808 }
1809
1810 werr = get_nc_changes_add_links(sam_ctx, getnc_state,
1811 getnc_state->ncRoot_dn,
1812 schema, getnc_state->min_usn,
1813 req10->replica_flags,
1814 msg,
1815 &getnc_state->la_list,
1816 &getnc_state->la_count,
1817 getnc_state->uptodateness_vector);
1818 if (!W_ERROR_IS_OK(werr)) {
1819 return werr;
1820 }
1821
1822 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
1823 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
1824 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
1825 }
1826 if (uSN > getnc_state->highest_usn) {
1827 getnc_state->highest_usn = uSN;
1828 }
1829
1830 if (obj->meta_data_ctr == NULL) {
1831 DEBUG(8,(__location__ ": getncchanges skipping send of object %s\n",
1832 ldb_dn_get_linearized(msg->dn)));
1833 /* no attributes to send */
1834 talloc_free(obj);
1835 continue;
1836 }
1837
1838 r->out.ctr->ctr6.object_count++;
1839
1840 *currentObject = obj;
1841 currentObject = &obj->next_object;
1842
1843 talloc_free(getnc_state->last_dn);
1844 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
1845
1846 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
1847
1848 talloc_free(msg_res);
1849 talloc_free(msg_dn);
1850 }
1851
1852 getnc_state->num_processed = i;
1853
1854 r->out.ctr->ctr6.nc_object_count = getnc_state->num_records;
1855
1856 /* the client can us to call UpdateRefs on its behalf to
1857 re-establish monitoring of the NC */
1858 if ((req10->replica_flags & (DRSUAPI_DRS_ADD_REF | DRSUAPI_DRS_REF_GCSPN)) &&
1859 !GUID_all_zero(&req10->destination_dsa_guid)) {
1860 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
1861 DEBUG(3,("UpdateRefs on getncchanges for %s\n",
1862 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
1863 ureq.naming_context = ncRoot;
1864 ureq.dest_dsa_dns_name = samdb_ntds_msdcs_dns_name(b_state->sam_ctx, mem_ctx,
1865 &req10->destination_dsa_guid);
1866 if (!ureq.dest_dsa_dns_name) {
1867 return WERR_NOMEM;
1868 }
1869 ureq.dest_dsa_guid = req10->destination_dsa_guid;
1870 ureq.options = DRSUAPI_DRS_ADD_REF |
1871 DRSUAPI_DRS_ASYNC_OP |
1872 DRSUAPI_DRS_GETCHG_CHECK;
1873
1874 /* we also need to pass through the
1875 DRSUAPI_DRS_REF_GCSPN bit so that repsTo gets flagged
1876 to send notifies using the GC SPN */
1877 ureq.options |= (req10->replica_flags & DRSUAPI_DRS_REF_GCSPN);
1878
1879 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
1880 if (!W_ERROR_IS_OK(werr)) {
1881 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
1882 win_errstr(werr)));
1883 }
1884 }
1885
1886 /*
1887 * TODO:
1888 * This is just a guess, how to calculate the
1889 * number of linked attributes to send, we need to
1890 * find out how to do this right.
1891 */
1892 if (r->out.ctr->ctr6.object_count >= max_links) {
1893 max_links = 0;
1894 } else {
1895 max_links -= r->out.ctr->ctr6.object_count;
1896 }
1897
1898 link_total = getnc_state->la_count;
1899
1900 if (i < getnc_state->num_records) {
1901 r->out.ctr->ctr6.more_data = true;
1902 } else {
1903 /* sort the whole array the first time */
1904 if (!getnc_state->la_sorted) {
1905 LDB_TYPESAFE_QSORT(getnc_state->la_list, getnc_state->la_count,
1906 sam_ctx, linked_attribute_compare);
1907 getnc_state->la_sorted = true;
1908 }
1909
1910 link_count = getnc_state->la_count - getnc_state->la_idx;
1911 link_count = MIN(max_links, link_count);
1912
1913 r->out.ctr->ctr6.linked_attributes_count = link_count;
1914 r->out.ctr->ctr6.linked_attributes = getnc_state->la_list + getnc_state->la_idx;
1915
1916 getnc_state->la_idx += link_count;
1917 link_given = getnc_state->la_idx;
1918
1919 if (getnc_state->la_idx < getnc_state->la_count) {
1920 r->out.ctr->ctr6.more_data = true;
1921 }
1922 }
1923
1924 if (!r->out.ctr->ctr6.more_data) {
1925 talloc_steal(mem_ctx, getnc_state->la_list);
1926
1927 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1928 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1929
1930 werr = get_nc_changes_udv(sam_ctx, getnc_state->ncRoot_dn,
1931 r->out.ctr->ctr6.uptodateness_vector);
1932 if (!W_ERROR_IS_OK(werr)) {
1933 return werr;
1934 }
1935
1936 talloc_free(getnc_state);
1937 b_state->getncchanges_state = NULL;
1938 }
1939
1940 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1941 r->out.ctr->ctr6.uptodateness_vector = NULL;
1942 r->out.ctr->ctr6.nc_object_count = 0;
1943 ZERO_STRUCT(r->out.ctr->ctr6.new_highwatermark);
1944 }
1945
1946 DEBUG(r->out.ctr->ctr6.more_data?4:2,
1947 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %u/%u) %u links (done %u/%u (as %s))\n",
1948 (unsigned long long)(req10->highwatermark.highest_usn+1),
1949 req10->replica_flags, drs_ObjectIdentifier_to_string(mem_ctx, ncRoot),
1950 r->out.ctr->ctr6.object_count,
1951 i, r->out.ctr->ctr6.more_data?getnc_state->num_records:i,
1952 r->out.ctr->ctr6.linked_attributes_count,
1953 link_given, link_total,
1954 dom_sid_string(mem_ctx, user_sid)));
1955
1956 #if 0
1957 if (!r->out.ctr->ctr6.more_data && req10->extended_op != DRSUAPI_EXOP_NONE) {
1958 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);
1959 }
1960 #endif
1961
1962 return WERR_OK;
1963 }