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s4-drs: EXOP_REPL_SECRETS can be called by RW DC as well
[Samba/gbeck.git] / source4 / rpc_server / drsuapi / getncchanges.c
blob871fc6867e5d7b6cd00e6b4e72e7f345ac3474c6
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 bool force_object_return)
124 {
125 const struct ldb_val *md_value;
126 uint32_t i, n;
127 struct replPropertyMetaDataBlob md;
128 uint32_t rid = 0;
129 enum ndr_err_code ndr_err;
130 uint32_t *attids;
131 const char *rdn;
132 const struct dsdb_attribute *rdn_sa;
133 unsigned int instanceType;
134 struct dsdb_syntax_ctx syntax_ctx;
135
136 /* make dsdb sytanx context for conversions */
137 dsdb_syntax_ctx_init(&syntax_ctx, sam_ctx, schema);
138 syntax_ctx.is_schema_nc = is_schema_nc;
139
140 instanceType = ldb_msg_find_attr_as_uint(msg, "instanceType", 0);
141 if (instanceType & INSTANCE_TYPE_IS_NC_HEAD) {
142 obj->is_nc_prefix = true;
143 obj->parent_object_guid = NULL;
144 } else {
145 obj->is_nc_prefix = false;
146 obj->parent_object_guid = talloc(obj, struct GUID);
147 if (obj->parent_object_guid == NULL) {
148 return WERR_DS_DRA_INTERNAL_ERROR;
149 }
150 *obj->parent_object_guid = samdb_result_guid(msg, "parentGUID");
151 if (GUID_all_zero(obj->parent_object_guid)) {
152 DEBUG(0,(__location__ ": missing parentGUID for %s\n",
153 ldb_dn_get_linearized(msg->dn)));
154 return WERR_DS_DRA_INTERNAL_ERROR;
155 }
156 }
157 obj->next_object = NULL;
158
159 md_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
160 if (!md_value) {
161 /* nothing to send */
162 return WERR_OK;
163 }
164
165 if (instanceType & INSTANCE_TYPE_UNINSTANT) {
166 /* don't send uninstantiated objects */
167 return WERR_OK;
168 }
169
170 ndr_err = ndr_pull_struct_blob(md_value, obj, &md,
171 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
172 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
173 return WERR_DS_DRA_INTERNAL_ERROR;
174 }
175
176 if (md.version != 1) {
177 return WERR_DS_DRA_INTERNAL_ERROR;
178 }
179
180 rdn = ldb_dn_get_rdn_name(msg->dn);
181 if (rdn == NULL) {
182 DEBUG(0,(__location__ ": No rDN for %s\n", ldb_dn_get_linearized(msg->dn)));
183 return WERR_DS_DRA_INTERNAL_ERROR;
184 }
185
186 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn);
187 if (rdn_sa == NULL) {
188 DEBUG(0,(__location__ ": Can't find dsds_attribute for rDN %s in %s\n",
189 rdn, ldb_dn_get_linearized(msg->dn)));
190 return WERR_DS_DRA_INTERNAL_ERROR;
191 }
192
193 obj->meta_data_ctr = talloc(obj, struct drsuapi_DsReplicaMetaDataCtr);
194 attids = talloc_array(obj, uint32_t, md.ctr.ctr1.count);
195
196 obj->object.identifier = get_object_identifier(obj, msg);
197 if (obj->object.identifier == NULL) {
198 return WERR_NOMEM;
199 }
200 dom_sid_split_rid(NULL, &obj->object.identifier->sid, NULL, &rid);
201
202 obj->meta_data_ctr->meta_data = talloc_array(obj, struct drsuapi_DsReplicaMetaData, md.ctr.ctr1.count);
203 for (n=i=0; i<md.ctr.ctr1.count; i++) {
204 const struct dsdb_attribute *sa;
205 bool force_attribute = false;
206
207 /* if the attribute has not changed, and it is not the
208 instanceType then don't include it */
209 if (md.ctr.ctr1.array[i].local_usn < highest_usn &&
210 extended_op != DRSUAPI_EXOP_REPL_SECRET &&
211 md.ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType) continue;
212
213 /* don't include the rDN */
214 if (md.ctr.ctr1.array[i].attid == rdn_sa->attributeID_id) continue;
215
216 sa = dsdb_attribute_by_attributeID_id(schema, md.ctr.ctr1.array[i].attid);
217 if (!sa) {
218 DEBUG(0,(__location__ ": Failed to find attribute in schema for attrid %u mentioned in replPropertyMetaData of %s\n",
219 (unsigned int)md.ctr.ctr1.array[i].attid,
220 ldb_dn_get_linearized(msg->dn)));
221 return WERR_DS_DRA_INTERNAL_ERROR;
222 }
223
224 if (sa->linkID) {
225 struct ldb_message_element *el;
226 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
227 if (el && el->num_values && dsdb_dn_is_upgraded_link_val(&el->values[0])) {
228 /* don't send upgraded links inline */
229 continue;
230 }
231 }
232
233 if (extended_op == DRSUAPI_EXOP_REPL_SECRET &&
234 !dsdb_attr_in_rodc_fas(sa)) {
235 force_attribute = true;
236 DEBUG(4,("Forcing attribute %s in %s\n",
237 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
238 }
239
240 /* filter by uptodateness_vector */
241 if (md.ctr.ctr1.array[i].attid != DRSUAPI_ATTID_instanceType &&
242 !force_attribute &&
243 udv_filter(uptodateness_vector,
244 &md.ctr.ctr1.array[i].originating_invocation_id,
245 md.ctr.ctr1.array[i].originating_usn)) {
246 continue;
247 }
248
249 /* filter by partial_attribute_set */
250 if (partial_attribute_set && !check_partial_attribute_set(sa, partial_attribute_set)) {
251 continue;
252 }
253
254 obj->meta_data_ctr->meta_data[n].originating_change_time = md.ctr.ctr1.array[i].originating_change_time;
255 obj->meta_data_ctr->meta_data[n].version = md.ctr.ctr1.array[i].version;
256 obj->meta_data_ctr->meta_data[n].originating_invocation_id = md.ctr.ctr1.array[i].originating_invocation_id;
257 obj->meta_data_ctr->meta_data[n].originating_usn = md.ctr.ctr1.array[i].originating_usn;
258 attids[n] = md.ctr.ctr1.array[i].attid;
259 n++;
260 }
261
262 /* ignore it if its an empty change. Note that renames always
263 * change the 'name' attribute, so they won't be ignored by
264 * this
265
266 * the force_object_return check is used to force an empty
267 * object return when we timeout in the getncchanges loop.
268 * This allows us to return an empty object, which keeps the
269 * client happy while preventing timeouts
270 */
271 if (n == 0 ||
272 (n == 1 &&
273 attids[0] == DRSUAPI_ATTID_instanceType &&
274 !force_object_return)) {
275 talloc_free(obj->meta_data_ctr);
276 obj->meta_data_ctr = NULL;
277 return WERR_OK;
278 }
279
280 obj->meta_data_ctr->count = n;
281
282 obj->object.flags = DRSUAPI_DS_REPLICA_OBJECT_FROM_MASTER;
283 obj->object.attribute_ctr.num_attributes = obj->meta_data_ctr->count;
284 obj->object.attribute_ctr.attributes = talloc_array(obj, struct drsuapi_DsReplicaAttribute,
285 obj->object.attribute_ctr.num_attributes);
286 if (obj->object.attribute_ctr.attributes == NULL) {
287 return WERR_NOMEM;
288 }
289
290 /*
291 * Note that the meta_data array and the attributes array must
292 * be the same size and in the same order
293 */
294 for (i=0; i<obj->object.attribute_ctr.num_attributes; i++) {
295 struct ldb_message_element *el;
296 WERROR werr;
297 const struct dsdb_attribute *sa;
298
299 sa = dsdb_attribute_by_attributeID_id(schema, attids[i]);
300 if (!sa) {
301 DEBUG(0,("Unable to find attributeID %u in schema\n", attids[i]));
302 return WERR_DS_DRA_INTERNAL_ERROR;
303 }
304
305 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
306 if (el == NULL) {
307 /* this happens for attributes that have been removed */
308 DEBUG(5,("No element '%s' for attributeID %u in message\n",
309 sa->lDAPDisplayName, attids[i]));
310 ZERO_STRUCT(obj->object.attribute_ctr.attributes[i]);
311 obj->object.attribute_ctr.attributes[i].attid =
312 dsdb_attribute_get_attid(sa, syntax_ctx.is_schema_nc);
313 } else {
314 werr = sa->syntax->ldb_to_drsuapi(&syntax_ctx, sa, el, obj,
315 &obj->object.attribute_ctr.attributes[i]);
316 if (!W_ERROR_IS_OK(werr)) {
317 DEBUG(0,("Unable to convert %s to DRS object - %s\n",
318 sa->lDAPDisplayName, win_errstr(werr)));
319 return werr;
320 }
321 /* if DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING is set
322 * check if attribute is secret and send a null value
323 */
324 if (replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
325 drsuapi_process_secret_attribute(&obj->object.attribute_ctr.attributes[i],
326 &obj->meta_data_ctr->meta_data[i]);
327 }
328 /* some attributes needs to be encrypted
329 before being sent */
330 werr = drsuapi_encrypt_attribute(obj, session_key, rid,
331 &obj->object.attribute_ctr.attributes[i]);
332 if (!W_ERROR_IS_OK(werr)) {
333 DEBUG(0,("Unable to encrypt %s in DRS object - %s\n",
334 sa->lDAPDisplayName, win_errstr(werr)));
335 return werr;
336 }
337 }
338 }
339
340 return WERR_OK;
341 }
342
343 /*
344 add one linked attribute from an object to the list of linked
345 attributes in a getncchanges request
346 */
347 static WERROR get_nc_changes_add_la(TALLOC_CTX *mem_ctx,
348 struct ldb_context *sam_ctx,
349 const struct dsdb_schema *schema,
350 const struct dsdb_attribute *sa,
351 struct ldb_message *msg,
352 struct dsdb_dn *dsdb_dn,
353 struct drsuapi_DsReplicaLinkedAttribute **la_list,
354 uint32_t *la_count)
355 {
356 struct drsuapi_DsReplicaLinkedAttribute *la;
357 bool active;
358 NTSTATUS status;
359 WERROR werr;
360
361 (*la_list) = talloc_realloc(mem_ctx, *la_list, struct drsuapi_DsReplicaLinkedAttribute, (*la_count)+1);
362 W_ERROR_HAVE_NO_MEMORY(*la_list);
363
364 la = &(*la_list)[*la_count];
365
366 la->identifier = get_object_identifier(*la_list, msg);
367 W_ERROR_HAVE_NO_MEMORY(la->identifier);
368
369 active = (dsdb_dn_rmd_flags(dsdb_dn->dn) & DSDB_RMD_FLAG_DELETED) == 0;
370
371 if (!active) {
372 /* We have to check that the inactive link still point to an existing object */
373 struct GUID guid;
374 struct ldb_dn *tdn;
375 int ret;
376 const char *v;
377
378 v = ldb_msg_find_attr_as_string(msg, "isDeleted", "FALSE");
379 if (strncmp(v, "TRUE", 4) == 0) {
380 /*
381 * Note: we skip the transmition of the deleted link even if the other part used to
382 * know about it because when we transmit the deletion of the object, the link will
383 * be deleted too due to deletion of object where link points and Windows do so.
384 */
385 if (dsdb_functional_level(sam_ctx) >= DS_DOMAIN_FUNCTION_2008_R2) {
386 v = ldb_msg_find_attr_as_string(msg, "isRecycled", "FALSE");
387 /*
388 * On Windows 2008R2 isRecycled is always present even if FL or DL are < FL 2K8R2
389 * if it join an existing domain with deleted objets, it firsts impose to have a
390 * schema with the is-Recycled object and for all deleted objects it adds the isRecycled
391 * either during initial replication or after the getNCChanges.
392 * Behavior of samba has been changed to always have this attribute if it's present in the schema.
393 *
394 * So if FL <2K8R2 isRecycled might be here or not but we don't care, it's meaning less.
395 * If FL >=2K8R2 we are sure that this attribute will be here.
396 * For this kind of forest level we do not return the link if the object is recycled
397 * (isRecycled = true).
398 */
399 if (strncmp(v, "TRUE", 4) == 0) {
400 DEBUG(2, (" object %s is recycled, not returning linked attribute !\n",
401 ldb_dn_get_linearized(msg->dn)));
402 return WERR_OK;
403 }
404 } else {
405 return WERR_OK;
406 }
407 }
408 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
409 if (!NT_STATUS_IS_OK(status)) {
410 DEBUG(0,(__location__ " Unable to extract GUID in linked attribute '%s' in '%s'\n",
411 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
412 return ntstatus_to_werror(status);
413 }
414 ret = dsdb_find_dn_by_guid(sam_ctx, mem_ctx, &guid, &tdn);
415 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
416 DEBUG(2, (" Search of guid %s returned 0 objects, skipping it !\n",
417 GUID_string(mem_ctx, &guid)));
418 return WERR_OK;
419 } else if (ret != LDB_SUCCESS) {
420 DEBUG(0, (__location__ " Search of guid %s failed with error code %d\n",
421 GUID_string(mem_ctx, &guid),
422 ret));
423 return WERR_OK;
424 }
425 }
426 la->attid = sa->attributeID_id;
427 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
428
429 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
430 if (!NT_STATUS_IS_OK(status)) {
431 DEBUG(0,(__location__ " No RMD_VERSION in linked attribute '%s' in '%s'\n",
432 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
433 return ntstatus_to_werror(status);
434 }
435 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
436 if (!NT_STATUS_IS_OK(status)) {
437 DEBUG(0,(__location__ " No RMD_CHANGETIME in linked attribute '%s' in '%s'\n",
438 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
439 return ntstatus_to_werror(status);
440 }
441 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
442 if (!NT_STATUS_IS_OK(status)) {
443 DEBUG(0,(__location__ " No RMD_INVOCID in linked attribute '%s' in '%s'\n",
444 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
445 return ntstatus_to_werror(status);
446 }
447 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
448 if (!NT_STATUS_IS_OK(status)) {
449 DEBUG(0,(__location__ " No RMD_ORIGINATING_USN in linked attribute '%s' in '%s'\n",
450 sa->lDAPDisplayName, ldb_dn_get_linearized(msg->dn)));
451 return ntstatus_to_werror(status);
452 }
453
454 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
455 if (!NT_STATUS_IS_OK(status)) {
456 /* this is possible for upgraded links */
457 la->originating_add_time = la->meta_data.originating_change_time;
458 }
459
460 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
461 W_ERROR_NOT_OK_RETURN(werr);
462
463 (*la_count)++;
464 return WERR_OK;
465 }
466
467
468 /*
469 add linked attributes from an object to the list of linked
470 attributes in a getncchanges request
471 */
472 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
473 TALLOC_CTX *mem_ctx,
474 struct ldb_dn *ncRoot_dn,
475 struct dsdb_schema *schema,
476 uint64_t highest_usn,
477 uint32_t replica_flags,
478 struct ldb_message *msg,
479 struct drsuapi_DsReplicaLinkedAttribute **la_list,
480 uint32_t *la_count,
481 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
482 {
483 unsigned int i;
484 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
485 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
486
487 for (i=0; i<msg->num_elements; i++) {
488 struct ldb_message_element *el = &msg->elements[i];
489 const struct dsdb_attribute *sa;
490 unsigned int j;
491
492 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
493
494 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
495 /* we only want forward links */
496 continue;
497 }
498
499 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
500 /* its an old style link, it will have been
501 * sent in the main replication data */
502 continue;
503 }
504
505 for (j=0; j<el->num_values; j++) {
506 struct dsdb_dn *dsdb_dn;
507 uint64_t local_usn;
508 NTSTATUS status;
509 WERROR werr;
510
511 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
512 if (dsdb_dn == NULL) {
513 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
514 el->name, ldb_dn_get_linearized(msg->dn)));
515 talloc_free(tmp_ctx);
516 return WERR_DS_DRA_INTERNAL_ERROR;
517 }
518
519 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
520 if (!NT_STATUS_IS_OK(status)) {
521 /* this can happen for attributes
522 given to us with old style meta
523 data */
524 continue;
525 }
526
527 if (local_usn > uSNChanged) {
528 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
529 el->name, ldb_dn_get_linearized(msg->dn)));
530 talloc_free(tmp_ctx);
531 return WERR_DS_DRA_INTERNAL_ERROR;
532 }
533
534 if (local_usn < highest_usn) {
535 continue;
536 }
537
538 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
539 dsdb_dn, la_list, la_count);
540 if (!W_ERROR_IS_OK(werr)) {
541 talloc_free(tmp_ctx);
542 return werr;
543 }
544 }
545 }
546
547 talloc_free(tmp_ctx);
548 return WERR_OK;
549 }
550
551 /*
552 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
553 */
554 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
555 struct ldb_dn *ncRoot_dn,
556 struct drsuapi_DsReplicaCursor2CtrEx *udv)
557 {
558 int ret;
559
560 udv->version = 2;
561 udv->reserved1 = 0;
562 udv->reserved2 = 0;
563
564 ret = dsdb_load_udv_v2(sam_ctx, ncRoot_dn, udv, &udv->cursors, &udv->count);
565 if (ret != LDB_SUCCESS) {
566 DEBUG(0,(__location__ ": Failed to load UDV for %s - %s\n",
567 ldb_dn_get_linearized(ncRoot_dn), ldb_errstring(sam_ctx)));
568 return WERR_DS_DRA_INTERNAL_ERROR;
569 }
570
571 return WERR_OK;
572 }
573
574
575 /* comparison function for linked attributes - see CompareLinks() in
576 * MS-DRSR section 4.1.10.5.17 */
577 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
578 const struct drsuapi_DsReplicaLinkedAttribute *la2,
579 struct ldb_context *sam_ctx)
580 {
581 int c;
582 WERROR werr;
583 TALLOC_CTX *tmp_ctx;
584 const struct dsdb_schema *schema;
585 const struct dsdb_attribute *schema_attrib;
586 struct dsdb_dn *dn1, *dn2;
587 struct GUID guid1, guid2;
588 NTSTATUS status;
589
590 c = GUID_compare(&la1->identifier->guid,
591 &la2->identifier->guid);
592 if (c != 0) return c;
593
594 if (la1->attid != la2->attid) {
595 return la1->attid < la2->attid? -1:1;
596 }
597
598 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
599 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
600 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
601 }
602
603 /* we need to get the target GUIDs to compare */
604 tmp_ctx = talloc_new(sam_ctx);
605
606 schema = dsdb_get_schema(sam_ctx, tmp_ctx);
607 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
608
609 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
610 if (!W_ERROR_IS_OK(werr)) {
611 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
612 talloc_free(tmp_ctx);
613 return 0;
614 }
615
616 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
617 if (!W_ERROR_IS_OK(werr)) {
618 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
619 talloc_free(tmp_ctx);
620 return 0;
621 }
622
623 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
624 if (!NT_STATUS_IS_OK(status)) {
625 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
626 talloc_free(tmp_ctx);
627 return 0;
628 }
629 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
630 if (!NT_STATUS_IS_OK(status)) {
631 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
632 talloc_free(tmp_ctx);
633 return 0;
634 }
635
636 talloc_free(tmp_ctx);
637
638 return GUID_compare(&guid1, &guid2);
639 }
640
641 struct drsuapi_changed_objects {
642 struct ldb_dn *dn;
643 struct GUID guid;
644 uint64_t usn;
645 };
646
647 /*
648 sort the objects we send by tree order
649 */
650 static int site_res_cmp_parent_order(struct drsuapi_changed_objects *m1,
651 struct drsuapi_changed_objects *m2)
652 {
653 return ldb_dn_compare(m2->dn, m1->dn);
654 }
655
656 /*
657 sort the objects we send first by uSNChanged
658 */
659 static int site_res_cmp_dn_usn_order(struct drsuapi_changed_objects *m1,
660 struct drsuapi_changed_objects *m2)
661 {
662 unsigned usnchanged1, usnchanged2;
663 unsigned cn1, cn2;
664
665 cn1 = ldb_dn_get_comp_num(m1->dn);
666 cn2 = ldb_dn_get_comp_num(m2->dn);
667 if (cn1 != cn2) {
668 return cn1 > cn2 ? 1 : -1;
669 }
670 usnchanged1 = m1->usn;
671 usnchanged2 = m2->usn;
672 if (usnchanged1 == usnchanged2) {
673 return 0;
674 }
675 return usnchanged1 > usnchanged2 ? 1 : -1;
676 }
677
678
679 /*
680 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
681 */
682 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
683 TALLOC_CTX *mem_ctx,
684 struct drsuapi_DsGetNCChangesRequest10 *req10,
685 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
686 {
687 struct ldb_dn *rid_manager_dn, *req_dn;
688 int ret;
689 struct ldb_context *ldb = b_state->sam_ctx;
690 struct ldb_result *ext_res;
691 struct dsdb_fsmo_extended_op *exop;
692 bool is_us;
693
694 /*
695 steps:
696 - verify that the DN being asked for is the RID Manager DN
697 - verify that we are the RID Manager
698 */
699
700 /* work out who is the RID Manager */
701 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
702 if (ret != LDB_SUCCESS) {
703 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s\n", ldb_errstring(ldb)));
704 return WERR_DS_DRA_INTERNAL_ERROR;
705 }
706
707 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
708 if (!ldb_dn_validate(req_dn) ||
709 ldb_dn_compare(req_dn, rid_manager_dn) != 0) {
710 /* that isn't the RID Manager DN */
711 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s\n",
712 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
713 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
714 return WERR_OK;
715 }
716
717 /* find the DN of the RID Manager */
718 ret = samdb_reference_dn_is_our_ntdsa(ldb, rid_manager_dn, "fSMORoleOwner", &is_us);
719 if (ret != LDB_SUCCESS) {
720 DEBUG(0,("Failed to find fSMORoleOwner in RID Manager object\n"));
721 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
722 return WERR_DS_DRA_INTERNAL_ERROR;
723 }
724
725 if (!is_us) {
726 /* we're not the RID Manager - go away */
727 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
728 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
729 return WERR_OK;
730 }
731
732 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
733 W_ERROR_HAVE_NO_MEMORY(exop);
734
735 exop->fsmo_info = req10->fsmo_info;
736 exop->destination_dsa_guid = req10->destination_dsa_guid;
737
738 ret = ldb_transaction_start(ldb);
739 if (ret != LDB_SUCCESS) {
740 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
741 ldb_errstring(ldb)));
742 return WERR_DS_DRA_INTERNAL_ERROR;
743 }
744
745 /*
746 * FIXME (kim): this is a temp hack to return just few object,
747 * but not the whole domain NC.
748 * We should remove this hack and implement a 'scope'
749 * building function to return just the set of object
750 * documented for DRSUAPI_EXOP_FSMO_RID_ALLOC extended_op
751 */
752 ldb_sequence_number(ldb, LDB_SEQ_HIGHEST_SEQ, &req10->highwatermark.highest_usn);
753
754 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
755 if (ret != LDB_SUCCESS) {
756 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
757 ldb_errstring(ldb)));
758 ldb_transaction_cancel(ldb);
759 return WERR_DS_DRA_INTERNAL_ERROR;
760 }
761
762 ret = ldb_transaction_commit(ldb);
763 if (ret != LDB_SUCCESS) {
764 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
765 ldb_errstring(ldb)));
766 return WERR_DS_DRA_INTERNAL_ERROR;
767 }
768
769 talloc_free(ext_res);
770
771 DEBUG(2,("Allocated RID pool for server %s\n",
772 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
773
774 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
775
776 return WERR_OK;
777 }
778
779 /*
780 return an array of SIDs from a ldb_message given an attribute name
781 assumes the SIDs are in extended DN format
782 */
783 static WERROR samdb_result_sid_array_dn(struct ldb_context *sam_ctx,
784 struct ldb_message *msg,
785 TALLOC_CTX *mem_ctx,
786 const char *attr,
787 const struct dom_sid ***sids)
788 {
789 struct ldb_message_element *el;
790 unsigned int i;
791
792 el = ldb_msg_find_element(msg, attr);
793 if (!el) {
794 *sids = NULL;
795 return WERR_OK;
796 }
797
798 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
799 W_ERROR_HAVE_NO_MEMORY(*sids);
800
801 for (i=0; i<el->num_values; i++) {
802 struct ldb_dn *dn = ldb_dn_from_ldb_val(mem_ctx, sam_ctx, &el->values[i]);
803 NTSTATUS status;
804 struct dom_sid *sid;
805
806 sid = talloc(*sids, struct dom_sid);
807 W_ERROR_HAVE_NO_MEMORY(sid);
808 status = dsdb_get_extended_dn_sid(dn, sid, "SID");
809 if (!NT_STATUS_IS_OK(status)) {
810 return WERR_INTERNAL_DB_CORRUPTION;
811 }
812 (*sids)[i] = sid;
813 }
814 (*sids)[i] = NULL;
815
816 return WERR_OK;
817 }
818
819
820 /*
821 return an array of SIDs from a ldb_message given an attribute name
822 assumes the SIDs are in NDR form
823 */
824 static WERROR samdb_result_sid_array_ndr(struct ldb_context *sam_ctx,
825 struct ldb_message *msg,
826 TALLOC_CTX *mem_ctx,
827 const char *attr,
828 const struct dom_sid ***sids)
829 {
830 struct ldb_message_element *el;
831 unsigned int i;
832
833 el = ldb_msg_find_element(msg, attr);
834 if (!el) {
835 *sids = NULL;
836 return WERR_OK;
837 }
838
839 (*sids) = talloc_array(mem_ctx, const struct dom_sid *, el->num_values + 1);
840 W_ERROR_HAVE_NO_MEMORY(*sids);
841
842 for (i=0; i<el->num_values; i++) {
843 enum ndr_err_code ndr_err;
844 struct dom_sid *sid;
845
846 sid = talloc(*sids, struct dom_sid);
847 W_ERROR_HAVE_NO_MEMORY(sid);
848
849 ndr_err = ndr_pull_struct_blob(&el->values[i], sid, sid,
850 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
851 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
852 return WERR_INTERNAL_DB_CORRUPTION;
853 }
854 (*sids)[i] = sid;
855 }
856 (*sids)[i] = NULL;
857
858 return WERR_OK;
859 }
860
861 /*
862 see if any SIDs in list1 are in list2
863 */
864 static bool sid_list_match(const struct dom_sid **list1, const struct dom_sid **list2)
865 {
866 unsigned int i, j;
867 /* do we ever have enough SIDs here to worry about O(n^2) ? */
868 for (i=0; list1[i]; i++) {
869 for (j=0; list2[j]; j++) {
870 if (dom_sid_equal(list1[i], list2[j])) {
871 return true;
872 }
873 }
874 }
875 return false;
876 }
877
878 /*
879 handle a DRSUAPI_EXOP_REPL_SECRET call
880 */
881 static WERROR getncchanges_repl_secret(struct drsuapi_bind_state *b_state,
882 TALLOC_CTX *mem_ctx,
883 struct drsuapi_DsGetNCChangesRequest10 *req10,
884 struct dom_sid *user_sid,
885 struct drsuapi_DsGetNCChangesCtr6 *ctr6,
886 bool has_get_all_changes)
887 {
888 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
889 struct ldb_dn *obj_dn, *rodc_dn, *krbtgt_link_dn;
890 int ret;
891 const char *rodc_attrs[] = { "msDS-KrbTgtLink", "msDS-NeverRevealGroup", "msDS-RevealOnDemandGroup", NULL };
892 const char *obj_attrs[] = { "tokenGroups", "objectSid", "UserAccountControl", "msDS-KrbTgtLinkBL", NULL };
893 struct ldb_result *rodc_res, *obj_res;
894 const struct dom_sid **never_reveal_sids, **reveal_sids, **token_sids;
895 WERROR werr;
896
897 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_SECRET extended op on %s\n",
898 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
899
900 /*
901 * we need to work out if we will allow this DC to
902 * replicate the secrets for this object
903 *
904 * see 4.1.10.5.14 GetRevealSecretsPolicyForUser for details
905 * of this function
906 */
907
908 if (b_state->sam_ctx_system == NULL) {
909 /* this operation needs system level access */
910 ctr6->extended_ret = DRSUAPI_EXOP_ERR_ACCESS_DENIED;
911 return WERR_DS_DRA_SOURCE_DISABLED;
912 }
913
914 obj_dn = drs_ObjectIdentifier_to_dn(mem_ctx, b_state->sam_ctx_system, ncRoot);
915 if (!ldb_dn_validate(obj_dn)) goto failed;
916
917 rodc_dn = ldb_dn_new_fmt(mem_ctx, b_state->sam_ctx_system, "<SID=%s>",
918 dom_sid_string(mem_ctx, user_sid));
919 if (!ldb_dn_validate(rodc_dn)) goto failed;
920
921 /* do the two searches we need */
922 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &rodc_res, rodc_dn, rodc_attrs,
923 DSDB_SEARCH_SHOW_EXTENDED_DN);
924 if (ret != LDB_SUCCESS || rodc_res->count != 1) goto failed;
925
926 ret = dsdb_search_dn(b_state->sam_ctx_system, mem_ctx, &obj_res, obj_dn, obj_attrs, 0);
927 if (ret != LDB_SUCCESS || obj_res->count != 1) goto failed;
928
929 /* if the object SID is equal to the user_sid, allow */
930 if (dom_sid_equal(user_sid,
931 samdb_result_dom_sid(mem_ctx, obj_res->msgs[0], "objectSid"))) {
932 goto allowed;
933 }
934
935 /* an RODC is allowed to get its own krbtgt account secrets */
936 krbtgt_link_dn = samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
937 rodc_res->msgs[0], "msDS-KrbTgtLink", NULL);
938 if (krbtgt_link_dn != NULL &&
939 ldb_dn_compare(obj_dn, krbtgt_link_dn) == 0) {
940 goto allowed;
941 }
942
943 /* but it isn't allowed to get anyone elses krbtgt secrets */
944 if (samdb_result_dn(b_state->sam_ctx_system, mem_ctx,
945 obj_res->msgs[0], "msDS-KrbTgtLinkBL", NULL)) {
946 goto denied;
947 }
948
949 if (ldb_msg_find_attr_as_uint(obj_res->msgs[0],
950 "userAccountControl", 0) &
951 UF_INTERDOMAIN_TRUST_ACCOUNT) {
952 goto denied;
953 }
954
955 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
956 mem_ctx, "msDS-NeverRevealGroup", &never_reveal_sids);
957 if (!W_ERROR_IS_OK(werr)) {
958 goto denied;
959 }
960
961 werr = samdb_result_sid_array_dn(b_state->sam_ctx_system, rodc_res->msgs[0],
962 mem_ctx, "msDS-RevealOnDemandGroup", &reveal_sids);
963 if (!W_ERROR_IS_OK(werr)) {
964 goto denied;
965 }
966
967 werr = samdb_result_sid_array_ndr(b_state->sam_ctx_system, obj_res->msgs[0],
968 mem_ctx, "tokenGroups", &token_sids);
969 if (!W_ERROR_IS_OK(werr) || token_sids==NULL) {
970 goto denied;
971 }
972
973 if (never_reveal_sids &&
974 sid_list_match(token_sids, never_reveal_sids)) {
975 goto denied;
976 }
977
978 if (reveal_sids &&
979 sid_list_match(token_sids, reveal_sids)) {
980 goto allowed;
981 }
982
983 /* default deny */
984 denied:
985 DEBUG(2,(__location__ ": Denied single object with secret replication for %s by RODC %s\n",
986 ldb_dn_get_linearized(obj_dn), ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
987 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
988 return WERR_DS_DRA_ACCESS_DENIED;
989
990 allowed:
991 DEBUG(2,(__location__ ": Allowed single object with secret replication for %s by %s %s\n",
992 ldb_dn_get_linearized(obj_dn), has_get_all_changes?"RWDC":"RODC",
993 ldb_dn_get_linearized(rodc_res->msgs[0]->dn)));
994 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
995 req10->highwatermark.highest_usn = 0;
996 return WERR_OK;
997
998 failed:
999 DEBUG(2,(__location__ ": Failed single secret replication for %s by RODC %s\n",
1000 ldb_dn_get_linearized(obj_dn), dom_sid_string(mem_ctx, user_sid)));
1001 ctr6->extended_ret = DRSUAPI_EXOP_ERR_NONE;
1002 return WERR_DS_DRA_BAD_DN;
1003 }
1004
1005
1006 /*
1007 handle a DRSUAPI_EXOP_REPL_OBJ call
1008 */
1009 static WERROR getncchanges_repl_obj(struct drsuapi_bind_state *b_state,
1010 TALLOC_CTX *mem_ctx,
1011 struct drsuapi_DsGetNCChangesRequest10 *req10,
1012 struct dom_sid *user_sid,
1013 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
1014 {
1015 struct drsuapi_DsReplicaObjectIdentifier *ncRoot = req10->naming_context;
1016
1017 DEBUG(3,(__location__ ": DRSUAPI_EXOP_REPL_OBJ extended op on %s\n",
1018 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1019
1020 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1021 return WERR_OK;
1022 }
1023
1024
1025 /*
1026 handle DRSUAPI_EXOP_FSMO_REQ_ROLE,
1027 DRSUAPI_EXOP_FSMO_RID_REQ_ROLE,
1028 and DRSUAPI_EXOP_FSMO_REQ_PDC calls
1029 */
1030 static WERROR getncchanges_change_master(struct drsuapi_bind_state *b_state,
1031 TALLOC_CTX *mem_ctx,
1032 struct drsuapi_DsGetNCChangesRequest10 *req10,
1033 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
1034 {
1035 struct ldb_dn *req_dn, *ntds_dn;
1036 int ret;
1037 unsigned int i;
1038 struct ldb_context *ldb = b_state->sam_ctx;
1039 struct ldb_message *msg;
1040 bool is_us;
1041
1042 /*
1043 steps:
1044 - verify that the client dn exists
1045 - verify that we are the current master
1046 */
1047
1048 req_dn = drs_ObjectIdentifier_to_dn(mem_ctx, ldb, req10->naming_context);
1049 if (!ldb_dn_validate(req_dn)) {
1050 /* that is not a valid dn */
1051 DEBUG(0,(__location__ ": FSMO role transfer request for invalid DN %s\n",
1052 drs_ObjectIdentifier_to_string(mem_ctx, req10->naming_context)));
1053 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
1054 return WERR_OK;
1055 }
1056
1057 /* retrieve the current role owner */
1058 /* find the DN of the RID Manager */
1059 ret = samdb_reference_dn_is_our_ntdsa(ldb, req_dn, "fSMORoleOwner", &is_us);
1060 if (ret != LDB_SUCCESS) {
1061 DEBUG(0,("Failed to find fSMORoleOwner in RID Manager object\n"));
1062 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1063 return WERR_DS_DRA_INTERNAL_ERROR;
1064 }
1065
1066 if (!is_us) {
1067 /* we're not the RID Manager - go away */
1068 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
1069 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
1070 return WERR_OK;
1071 }
1072
1073 /* change the current master */
1074 msg = ldb_msg_new(ldb);
1075 W_ERROR_HAVE_NO_MEMORY(msg);
1076 msg->dn = drs_ObjectIdentifier_to_dn(msg, ldb, req10->naming_context);
1077 W_ERROR_HAVE_NO_MEMORY(msg->dn);
1078
1079 /* TODO: make sure ntds_dn is a valid nTDSDSA object */
1080 ret = dsdb_find_dn_by_guid(ldb, msg, &req10->destination_dsa_guid, &ntds_dn);
1081 if (ret != LDB_SUCCESS) {
1082 DEBUG(0, (__location__ ": Unable to find NTDS object for guid %s - %s\n",
1083 GUID_string(mem_ctx, &req10->destination_dsa_guid), ldb_errstring(ldb)));
1084 talloc_free(msg);
1085 ctr6->extended_ret = DRSUAPI_EXOP_ERR_UNKNOWN_CALLER;
1086 return WERR_OK;
1087 }
1088
1089 ret = ldb_msg_add_string(msg, "fSMORoleOwner", ldb_dn_get_linearized(ntds_dn));
1090 if (ret != 0) {
1091 talloc_free(msg);
1092 return WERR_DS_DRA_INTERNAL_ERROR;
1093 }
1094
1095 for (i=0;i<msg->num_elements;i++) {
1096 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
1097 }
1098
1099 ret = ldb_transaction_start(ldb);
1100 if (ret != LDB_SUCCESS) {
1101 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
1102 ldb_errstring(ldb)));
1103 return WERR_DS_DRA_INTERNAL_ERROR;
1104 }
1105
1106 ret = ldb_modify(ldb, msg);
1107 if (ret != LDB_SUCCESS) {
1108 DEBUG(0,(__location__ ": Failed to change current owner - %s\n",
1109 ldb_errstring(ldb)));
1110 ldb_transaction_cancel(ldb);
1111 return WERR_DS_DRA_INTERNAL_ERROR;
1112 }
1113
1114 ret = ldb_transaction_commit(ldb);
1115 if (ret != LDB_SUCCESS) {
1116 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
1117 ldb_errstring(ldb)));
1118 return WERR_DS_DRA_INTERNAL_ERROR;
1119 }
1120
1121 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1122
1123 return WERR_OK;
1124 }
1125
1126 /* state of a partially completed getncchanges call */
1127 struct drsuapi_getncchanges_state {
1128 struct GUID *guids;
1129 uint32_t num_records;
1130 uint32_t num_processed;
1131 struct ldb_dn *ncRoot_dn;
1132 bool is_schema_nc;
1133 uint64_t min_usn;
1134 uint64_t highest_usn;
1135 struct ldb_dn *last_dn;
1136 struct drsuapi_DsReplicaLinkedAttribute *la_list;
1137 uint32_t la_count;
1138 bool la_sorted;
1139 uint32_t la_idx;
1140 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector;
1141 };
1142
1143 /*
1144 see if this getncchanges request includes a request to reveal secret information
1145 */
1146 static WERROR dcesrv_drsuapi_is_reveal_secrets_request(struct drsuapi_bind_state *b_state,
1147 struct drsuapi_DsGetNCChangesRequest10 *req10,
1148 bool *is_secret_request)
1149 {
1150 enum drsuapi_DsExtendedOperation exop;
1151 uint32_t i;
1152 struct dsdb_schema *schema;
1153
1154 *is_secret_request = true;
1155
1156 exop = req10->extended_op;
1157
1158 switch (exop) {
1159 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1160 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1161 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1162 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1163 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1164 /* FSMO exops can reveal secrets */
1165 *is_secret_request = true;
1166 return WERR_OK;
1167 case DRSUAPI_EXOP_REPL_SECRET:
1168 case DRSUAPI_EXOP_REPL_OBJ:
1169 case DRSUAPI_EXOP_NONE:
1170 break;
1171 }
1172
1173 if (req10->replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
1174 *is_secret_request = false;
1175 return WERR_OK;
1176 }
1177
1178 if (exop == DRSUAPI_EXOP_REPL_SECRET ||
1179 req10->partial_attribute_set == NULL) {
1180 /* they want secrets */
1181 *is_secret_request = true;
1182 return WERR_OK;
1183 }
1184
1185 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1186
1187 /* check the attributes they asked for */
1188 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1189 const struct dsdb_attribute *sa;
1190 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1191 if (sa == NULL) {
1192 return WERR_DS_DRA_SCHEMA_MISMATCH;
1193 }
1194 if (!dsdb_attr_in_rodc_fas(sa)) {
1195 *is_secret_request = true;
1196 return WERR_OK;
1197 }
1198 }
1199
1200 if (req10->partial_attribute_set_ex) {
1201 /* check the extended attributes they asked for */
1202 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1203 const struct dsdb_attribute *sa;
1204 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1205 if (sa == NULL) {
1206 return WERR_DS_DRA_SCHEMA_MISMATCH;
1207 }
1208 if (!dsdb_attr_in_rodc_fas(sa)) {
1209 *is_secret_request = true;
1210 return WERR_OK;
1211 }
1212 }
1213 }
1214
1215 *is_secret_request = false;
1216 return WERR_OK;
1217 }
1218
1219 /*
1220 see if this getncchanges request is only for attributes in the GC
1221 partial attribute set
1222 */
1223 static WERROR dcesrv_drsuapi_is_gc_pas_request(struct drsuapi_bind_state *b_state,
1224 struct drsuapi_DsGetNCChangesRequest10 *req10,
1225 bool *is_gc_pas_request)
1226 {
1227 enum drsuapi_DsExtendedOperation exop;
1228 uint32_t i;
1229 struct dsdb_schema *schema;
1230
1231 exop = req10->extended_op;
1232
1233 switch (exop) {
1234 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1235 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1236 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1237 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1238 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1239 case DRSUAPI_EXOP_REPL_SECRET:
1240 *is_gc_pas_request = false;
1241 return WERR_OK;
1242 case DRSUAPI_EXOP_REPL_OBJ:
1243 case DRSUAPI_EXOP_NONE:
1244 break;
1245 }
1246
1247 if (req10->partial_attribute_set == NULL) {
1248 /* they want it all */
1249 *is_gc_pas_request = false;
1250 return WERR_OK;
1251 }
1252
1253 schema = dsdb_get_schema(b_state->sam_ctx, NULL);
1254
1255 /* check the attributes they asked for */
1256 for (i=0; i<req10->partial_attribute_set->num_attids; i++) {
1257 const struct dsdb_attribute *sa;
1258 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set->attids[i]);
1259 if (sa == NULL) {
1260 return WERR_DS_DRA_SCHEMA_MISMATCH;
1261 }
1262 if (!sa->isMemberOfPartialAttributeSet) {
1263 *is_gc_pas_request = false;
1264 return WERR_OK;
1265 }
1266 }
1267
1268 if (req10->partial_attribute_set_ex) {
1269 /* check the extended attributes they asked for */
1270 for (i=0; i<req10->partial_attribute_set_ex->num_attids; i++) {
1271 const struct dsdb_attribute *sa;
1272 sa = dsdb_attribute_by_attributeID_id(schema, req10->partial_attribute_set_ex->attids[i]);
1273 if (sa == NULL) {
1274 return WERR_DS_DRA_SCHEMA_MISMATCH;
1275 }
1276 if (!sa->isMemberOfPartialAttributeSet) {
1277 *is_gc_pas_request = false;
1278 return WERR_OK;
1279 }
1280 }
1281 }
1282
1283 *is_gc_pas_request = true;
1284 return WERR_OK;
1285 }
1286
1287
1288 /*
1289 map from req8 to req10
1290 */
1291 static struct drsuapi_DsGetNCChangesRequest10 *
1292 getncchanges_map_req8(TALLOC_CTX *mem_ctx,
1293 struct drsuapi_DsGetNCChangesRequest8 *req8)
1294 {
1295 struct drsuapi_DsGetNCChangesRequest10 *req10 = talloc_zero(mem_ctx,
1296 struct drsuapi_DsGetNCChangesRequest10);
1297 if (req10 == NULL) {
1298 return NULL;
1299 }
1300
1301 req10->destination_dsa_guid = req8->destination_dsa_guid;
1302 req10->source_dsa_invocation_id = req8->source_dsa_invocation_id;
1303 req10->naming_context = req8->naming_context;
1304 req10->highwatermark = req8->highwatermark;
1305 req10->uptodateness_vector = req8->uptodateness_vector;
1306 req10->replica_flags = req8->replica_flags;
1307 req10->max_object_count = req8->max_object_count;
1308 req10->max_ndr_size = req8->max_ndr_size;
1309 req10->extended_op = req8->extended_op;
1310 req10->fsmo_info = req8->fsmo_info;
1311 req10->partial_attribute_set = req8->partial_attribute_set;
1312 req10->partial_attribute_set_ex = req8->partial_attribute_set_ex;
1313 req10->mapping_ctr = req8->mapping_ctr;
1314
1315 return req10;
1316 }
1317
1318
1319 /**
1320 * Collects object for normal replication cycle.
1321 */
1322 static WERROR getncchanges_collect_objects(struct drsuapi_bind_state *b_state,
1323 TALLOC_CTX *mem_ctx,
1324 struct drsuapi_DsGetNCChangesRequest10 *req10,
1325 struct ldb_dn *search_dn,
1326 const char *extra_filter,
1327 struct ldb_result **search_res)
1328 {
1329 int ret;
1330 char* search_filter;
1331 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
1332 //const char *extra_filter;
1333 struct drsuapi_getncchanges_state *getnc_state = b_state->getncchanges_state;
1334 const char *attrs[] = { "uSNChanged",
1335 "objectGUID" ,
1336 NULL };
1337
1338 if (req10->extended_op == DRSUAPI_EXOP_REPL_OBJ ||
1339 req10->extended_op == DRSUAPI_EXOP_REPL_SECRET) {
1340 scope = LDB_SCOPE_BASE;
1341 }
1342
1343 //extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1344
1345 //getnc_state->min_usn = req10->highwatermark.highest_usn;
1346
1347 /* Construct response. */
1348 search_filter = talloc_asprintf(mem_ctx,
1349 "(uSNChanged>=%llu)",
1350 (unsigned long long)(getnc_state->min_usn+1));
1351
1352 if (extra_filter) {
1353 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
1354 }
1355
1356 if (req10->replica_flags & DRSUAPI_DRS_CRITICAL_ONLY) {
1357 search_filter = talloc_asprintf(mem_ctx,
1358 "(&%s(isCriticalSystemObject=TRUE))",
1359 search_filter);
1360 }
1361
1362 if (req10->replica_flags & DRSUAPI_DRS_ASYNC_REP) {
1363 scope = LDB_SCOPE_BASE;
1364 }
1365
1366 if (!search_dn) {
1367 search_dn = getnc_state->ncRoot_dn;
1368 }
1369
1370 DEBUG(2,(__location__ ": getncchanges on %s using filter %s\n",
1371 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
1372 ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, getnc_state, search_res,
1373 search_dn, scope, attrs,
1374 search_filter);
1375 if (ret != LDB_SUCCESS) {
1376 return WERR_DS_DRA_INTERNAL_ERROR;
1377 }
1378
1379 return WERR_OK;
1380 }
1381
1382 /**
1383 * Collects object for normal replication cycle.
1384 */
1385 static WERROR getncchanges_collect_objects_exop(struct drsuapi_bind_state *b_state,
1386 TALLOC_CTX *mem_ctx,
1387 struct drsuapi_DsGetNCChangesRequest10 *req10,
1388 struct drsuapi_DsGetNCChangesCtr6 *ctr6,
1389 struct ldb_dn *search_dn,
1390 const char *extra_filter,
1391 struct ldb_result **search_res)
1392 {
1393 /* we have nothing to do in case of ex-op failure */
1394 if (ctr6->extended_ret != DRSUAPI_EXOP_ERR_SUCCESS) {
1395 return WERR_OK;
1396 }
1397
1398 /* TODO: implement extended op specific collection
1399 * of objects. Right now we just normal procedure
1400 * for collecting objects */
1401 return getncchanges_collect_objects(b_state, mem_ctx, req10, search_dn, extra_filter, search_res);
1402 }
1403
1404 /*
1405 drsuapi_DsGetNCChanges
1406
1407 see MS-DRSR 4.1.10.5.2 for basic logic of this function
1408 */
1409 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
1410 struct drsuapi_DsGetNCChanges *r)
1411 {
1412 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
1413 int ret;
1414 uint32_t i;
1415 struct dsdb_schema *schema;
1416 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
1417 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
1418 NTSTATUS status;
1419 DATA_BLOB session_key;
1420 WERROR werr;
1421 struct dcesrv_handle *h;
1422 struct drsuapi_bind_state *b_state;
1423 struct drsuapi_getncchanges_state *getnc_state;
1424 struct drsuapi_DsGetNCChangesRequest10 *req10;
1425 uint32_t options;
1426 uint32_t max_objects;
1427 uint32_t max_links;
1428 uint32_t link_count = 0;
1429 uint32_t link_total = 0;
1430 uint32_t link_given = 0;
1431 struct ldb_dn *search_dn = NULL;
1432 bool am_rodc, null_scope=false;
1433 enum security_user_level security_level;
1434 struct ldb_context *sam_ctx;
1435 struct dom_sid *user_sid;
1436 bool is_secret_request;
1437 bool is_gc_pas_request;
1438 struct drsuapi_changed_objects *changes;
1439 time_t max_wait;
1440 time_t start = time(NULL);
1441 bool max_wait_reached = false;
1442 bool has_get_all_changes = false;
1443
1444 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
1445 b_state = h->data;
1446
1447 sam_ctx = b_state->sam_ctx_system?b_state->sam_ctx_system:b_state->sam_ctx;
1448
1449 *r->out.level_out = 6;
1450 /* TODO: linked attributes*/
1451 r->out.ctr->ctr6.linked_attributes_count = 0;
1452 r->out.ctr->ctr6.linked_attributes = NULL;
1453
1454 r->out.ctr->ctr6.object_count = 0;
1455 r->out.ctr->ctr6.nc_object_count = 0;
1456 r->out.ctr->ctr6.more_data = false;
1457 r->out.ctr->ctr6.uptodateness_vector = NULL;
1458
1459 /* a RODC doesn't allow for any replication */
1460 ret = samdb_rodc(sam_ctx, &am_rodc);
1461 if (ret == LDB_SUCCESS && am_rodc) {
1462 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
1463 return WERR_DS_DRA_SOURCE_DISABLED;
1464 }
1465
1466 /* Check request revision.
1467 */
1468 switch (r->in.level) {
1469 case 8:
1470 req10 = getncchanges_map_req8(mem_ctx, &r->in.req->req8);
1471 if (req10 == NULL) {
1472 return WERR_NOMEM;
1473 }
1474 break;
1475 case 10:
1476 req10 = &r->in.req->req10;
1477 break;
1478 default:
1479 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
1480 r->in.level));
1481 return WERR_REVISION_MISMATCH;
1482 }
1483
1484
1485 /* Perform access checks. */
1486 /* TODO: we need to support a sync on a specific non-root
1487 * DN. We'll need to find the real partition root here */
1488 ncRoot = req10->naming_context;
1489 if (ncRoot == NULL) {
1490 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
1491 return WERR_DS_DRA_INVALID_PARAMETER;
1492 }
1493
1494 if (samdb_ntds_options(sam_ctx, &options) != LDB_SUCCESS) {
1495 return WERR_DS_DRA_INTERNAL_ERROR;
1496 }
1497
1498 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
1499 !(req10->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
1500 return WERR_DS_DRA_SOURCE_DISABLED;
1501 }
1502
1503 user_sid = &dce_call->conn->auth_state.session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
1504
1505 /* all clients must have GUID_DRS_GET_CHANGES */
1506 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1507 mem_ctx,
1508 dce_call->conn->auth_state.session_info->security_token,
1509 req10->naming_context,
1510 GUID_DRS_GET_CHANGES);
1511 if (!W_ERROR_IS_OK(werr)) {
1512 return werr;
1513 }
1514
1515 /* allowed if the GC PAS and client has
1516 GUID_DRS_GET_FILTERED_ATTRIBUTES */
1517 werr = dcesrv_drsuapi_is_gc_pas_request(b_state, req10, &is_gc_pas_request);
1518 if (!W_ERROR_IS_OK(werr)) {
1519 return werr;
1520 }
1521 if (is_gc_pas_request) {
1522 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1523 mem_ctx,
1524 dce_call->conn->auth_state.session_info->security_token,
1525 req10->naming_context,
1526 GUID_DRS_GET_FILTERED_ATTRIBUTES);
1527 if (W_ERROR_IS_OK(werr)) {
1528 goto allowed;
1529 }
1530 }
1531
1532 werr = dcesrv_drsuapi_is_reveal_secrets_request(b_state, req10, &is_secret_request);
1533 if (!W_ERROR_IS_OK(werr)) {
1534 return werr;
1535 }
1536 if (is_secret_request && req10->extended_op != DRSUAPI_EXOP_REPL_SECRET) {
1537 werr = drs_security_access_check_nc_root(b_state->sam_ctx,
1538 mem_ctx,
1539 dce_call->conn->auth_state.session_info->security_token,
1540 req10->naming_context,
1541 GUID_DRS_GET_ALL_CHANGES);
1542 if (!W_ERROR_IS_OK(werr)) {
1543 return werr;
1544 } else {
1545 has_get_all_changes = true;
1546 }
1547 }
1548
1549 allowed:
1550 /* for non-administrator replications, check that they have
1551 given the correct source_dsa_invocation_id */
1552 security_level = security_session_user_level(dce_call->conn->auth_state.session_info,
1553 samdb_domain_sid(sam_ctx));
1554 if (security_level == SECURITY_RO_DOMAIN_CONTROLLER) {
1555 if (req10->replica_flags & DRSUAPI_DRS_WRIT_REP) {
1556 /* we rely on this flag being unset for RODC requests */
1557 req10->replica_flags &= ~DRSUAPI_DRS_WRIT_REP;
1558 }
1559 }
1560
1561 if (req10->replica_flags & DRSUAPI_DRS_FULL_SYNC_PACKET) {
1562 /* Ignore the _in_ uptpdateness vector*/
1563 req10->uptodateness_vector = NULL;
1564 }
1565
1566 getnc_state = b_state->getncchanges_state;
1567
1568 /* see if a previous replication has been abandoned */
1569 if (getnc_state) {
1570 struct ldb_dn *new_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1571 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
1572 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
1573 ldb_dn_get_linearized(new_dn),
1574 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
1575 ldb_dn_get_linearized(getnc_state->last_dn)));
1576 talloc_free(getnc_state);
1577 getnc_state = NULL;
1578 }
1579 }
1580
1581 if (getnc_state == NULL) {
1582 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
1583 if (getnc_state == NULL) {
1584 return WERR_NOMEM;
1585 }
1586 b_state->getncchanges_state = getnc_state;
1587 getnc_state->ncRoot_dn = drs_ObjectIdentifier_to_dn(getnc_state, sam_ctx, ncRoot);
1588
1589 /* find out if we are to replicate Schema NC */
1590 ret = ldb_dn_compare(getnc_state->ncRoot_dn,
1591 ldb_get_schema_basedn(b_state->sam_ctx));
1592 getnc_state->is_schema_nc = (0 == ret);
1593
1594 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1595 r->out.ctr->ctr6.extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
1596 }
1597
1598 /*
1599 * This is the first replication cycle and it is
1600 * a good place to handle extended operations
1601 *
1602 * FIXME: we don't fully support extended operations yet
1603 */
1604 switch (req10->extended_op) {
1605 case DRSUAPI_EXOP_NONE:
1606 break;
1607 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
1608 werr = getncchanges_rid_alloc(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1609 W_ERROR_NOT_OK_RETURN(werr);
1610 search_dn = ldb_get_default_basedn(sam_ctx);
1611 break;
1612 case DRSUAPI_EXOP_REPL_SECRET:
1613 werr = getncchanges_repl_secret(b_state, mem_ctx, req10,
1614 user_sid,
1615 &r->out.ctr->ctr6,
1616 has_get_all_changes);
1617 r->out.result = werr;
1618 W_ERROR_NOT_OK_RETURN(werr);
1619 break;
1620 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
1621 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1622 W_ERROR_NOT_OK_RETURN(werr);
1623 break;
1624 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
1625 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1626 W_ERROR_NOT_OK_RETURN(werr);
1627 break;
1628 case DRSUAPI_EXOP_FSMO_REQ_PDC:
1629 werr = getncchanges_change_master(b_state, mem_ctx, req10, &r->out.ctr->ctr6);
1630 W_ERROR_NOT_OK_RETURN(werr);
1631 break;
1632 case DRSUAPI_EXOP_REPL_OBJ:
1633 werr = getncchanges_repl_obj(b_state, mem_ctx, req10, user_sid, &r->out.ctr->ctr6);
1634 r->out.result = werr;
1635 W_ERROR_NOT_OK_RETURN(werr);
1636 break;
1637
1638 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
1639
1640 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
1641 (unsigned)req10->extended_op));
1642 return WERR_DS_DRA_NOT_SUPPORTED;
1643 }
1644 }
1645
1646 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
1647 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
1648 DEBUG(0,(__location__ ": Bad DN '%s'\n",
1649 drs_ObjectIdentifier_to_string(mem_ctx, ncRoot)));
1650 return WERR_DS_DRA_INVALID_PARAMETER;
1651 }
1652
1653 /* we need the session key for encrypting password attributes */
1654 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
1655 if (!NT_STATUS_IS_OK(status)) {
1656 DEBUG(0,(__location__ ": Failed to get session key\n"));
1657 return WERR_DS_DRA_INTERNAL_ERROR;
1658 }
1659
1660 /*
1661 TODO: MS-DRSR section 4.1.10.1.1
1662 Work out if this is the start of a new cycle */
1663
1664 if (getnc_state->guids == NULL) {
1665 const char *extra_filter;
1666 struct ldb_result *search_res = NULL;
1667
1668 extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
1669
1670 getnc_state->min_usn = req10->highwatermark.highest_usn;
1671
1672 if (req10->extended_op == DRSUAPI_EXOP_NONE) {
1673 werr = getncchanges_collect_objects(b_state, mem_ctx, req10,
1674 search_dn, extra_filter,
1675 &search_res);
1676 } else {
1677 werr = getncchanges_collect_objects_exop(b_state, mem_ctx, req10,
1678 &r->out.ctr->ctr6,
1679 search_dn, extra_filter,
1680 &search_res);
1681 }
1682 W_ERROR_NOT_OK_RETURN(werr);
1683
1684 /* extract out the GUIDs list */
1685 getnc_state->num_records = search_res ? search_res->count : 0;
1686 getnc_state->guids = talloc_array(getnc_state, struct GUID, getnc_state->num_records);
1687 W_ERROR_HAVE_NO_MEMORY(getnc_state->guids);
1688
1689 changes = talloc_array(getnc_state,
1690 struct drsuapi_changed_objects,
1691 getnc_state->num_records);
1692 W_ERROR_HAVE_NO_MEMORY(changes);
1693
1694 for (i=0; i<getnc_state->num_records; i++) {
1695 changes[i].dn = search_res->msgs[i]->dn;
1696 changes[i].guid = samdb_result_guid(search_res->msgs[i], "objectGUID");
1697 changes[i].usn = ldb_msg_find_attr_as_uint64(search_res->msgs[i], "uSNChanged", 0);
1698 }
1699
1700 if (req10->replica_flags & DRSUAPI_DRS_GET_ANC) {
1701 TYPESAFE_QSORT(changes,
1702 getnc_state->num_records,
1703 site_res_cmp_parent_order);
1704 } else {
1705 TYPESAFE_QSORT(changes,
1706 getnc_state->num_records,
1707 site_res_cmp_dn_usn_order);
1708 }
1709
1710 getnc_state->uptodateness_vector = talloc_steal(getnc_state, req10->uptodateness_vector);
1711 if (getnc_state->uptodateness_vector) {
1712 /* make sure its sorted */
1713 TYPESAFE_QSORT(getnc_state->uptodateness_vector->cursors,
1714 getnc_state->uptodateness_vector->count,
1715 drsuapi_DsReplicaCursor_compare);
1716 }
1717
1718 for (i=0; i < getnc_state->num_records; i++) {
1719 getnc_state->guids[i] = changes[i].guid;
1720 if (GUID_all_zero(&getnc_state->guids[i])) {
1721 DEBUG(2,("getncchanges: bad objectGUID from %s\n",
1722 ldb_dn_get_linearized(search_res->msgs[i]->dn)));
1723 return WERR_DS_DRA_INTERNAL_ERROR;
1724 }
1725 }
1726
1727 talloc_free(search_res);
1728 talloc_free(changes);
1729 }
1730
1731 /* Prefix mapping */
1732 schema = dsdb_get_schema(sam_ctx, mem_ctx);
1733 if (!schema) {
1734 DEBUG(0,("No schema in sam_ctx\n"));
1735 return WERR_DS_DRA_INTERNAL_ERROR;
1736 }
1737
1738 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
1739 *r->out.ctr->ctr6.naming_context = *ncRoot;
1740
1741 if (dsdb_find_guid_by_dn(sam_ctx, getnc_state->ncRoot_dn,
1742 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
1743 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
1744 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
1745 return WERR_DS_DRA_INTERNAL_ERROR;
1746 }
1747
1748 /* find the SID if there is one */
1749 dsdb_find_sid_by_dn(sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
1750
1751 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
1752 r->out.ctr->ctr6.mapping_ctr = *ctr;
1753
1754 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(sam_ctx));
1755 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(sam_ctx));
1756
1757 r->out.ctr->ctr6.old_highwatermark = req10->highwatermark;
1758 r->out.ctr->ctr6.new_highwatermark = req10->highwatermark;
1759
1760 r->out.ctr->ctr6.first_object = NULL;
1761 currentObject = &r->out.ctr->ctr6.first_object;
1762
1763 /* use this to force single objects at a time, which is useful
1764 * for working out what object is giving problems
1765 */
1766 max_objects = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
1767 if (req10->max_object_count < max_objects) {
1768 max_objects = req10->max_object_count;
1769 }
1770 /*
1771 * TODO: work out how the maximum should be calculated
1772 */
1773 max_links = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max link sync", 1500);
1774
1775 /*
1776 * Maximum time that we can spend in a getncchanges
1777 * in order to avoid timeout of the other part.
1778 * 10 seconds by default.
1779 */
1780 max_wait = lpcfg_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max work time", 10);
1781 for (i=getnc_state->num_processed;
1782 i<getnc_state->num_records &&
1783 !null_scope &&
1784 (r->out.ctr->ctr6.object_count < max_objects)
1785 && !max_wait_reached;
1786 i++) {
1787 int uSN;
1788 struct drsuapi_DsReplicaObjectListItemEx *obj;
1789 struct ldb_message *msg;
1790 static const char * const msg_attrs[] = {
1791 "*",
1792 "nTSecurityDescriptor",
1793 "parentGUID",
1794 "replPropertyMetaData",
1795 DSDB_SECRET_ATTRIBUTES,
1796 NULL };
1797 struct ldb_result *msg_res;
1798 struct ldb_dn *msg_dn;
1799
1800 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
1801 W_ERROR_HAVE_NO_MEMORY(obj);
1802
1803 msg_dn = ldb_dn_new_fmt(obj, sam_ctx, "<GUID=%s>", GUID_string(obj, &getnc_state->guids[i]));
1804 W_ERROR_HAVE_NO_MEMORY(msg_dn);
1805
1806
1807 /* by re-searching here we avoid having a lot of full
1808 * records in memory between calls to getncchanges
1809 */
1810 ret = drsuapi_search_with_extended_dn(sam_ctx, obj, &msg_res,
1811 msg_dn,
1812 LDB_SCOPE_BASE, msg_attrs, NULL);
1813 if (ret != LDB_SUCCESS) {
1814 if (ret != LDB_ERR_NO_SUCH_OBJECT) {
1815 DEBUG(1,("getncchanges: failed to fetch DN %s - %s\n",
1816 ldb_dn_get_extended_linearized(obj, msg_dn, 1), ldb_errstring(sam_ctx)));
1817 }
1818 talloc_free(obj);
1819 continue;
1820 }
1821
1822 msg = msg_res->msgs[0];
1823
1824 max_wait_reached = (time(NULL) - start > max_wait);
1825
1826 werr = get_nc_changes_build_object(obj, msg,
1827 sam_ctx, getnc_state->ncRoot_dn,
1828 getnc_state->is_schema_nc,
1829 schema, &session_key, getnc_state->min_usn,
1830 req10->replica_flags,
1831 req10->partial_attribute_set,
1832 getnc_state->uptodateness_vector,
1833 req10->extended_op,
1834 max_wait_reached);
1835 if (!W_ERROR_IS_OK(werr)) {
1836 return werr;
1837 }
1838
1839 werr = get_nc_changes_add_links(sam_ctx, getnc_state,
1840 getnc_state->ncRoot_dn,
1841 schema, getnc_state->min_usn,
1842 req10->replica_flags,
1843 msg,
1844 &getnc_state->la_list,
1845 &getnc_state->la_count,
1846 getnc_state->uptodateness_vector);
1847 if (!W_ERROR_IS_OK(werr)) {
1848 return werr;
1849 }
1850
1851 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
1852 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
1853 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
1854 }
1855 if (uSN > getnc_state->highest_usn) {
1856 getnc_state->highest_usn = uSN;
1857 }
1858
1859 if (obj->meta_data_ctr == NULL) {
1860 DEBUG(8,(__location__ ": getncchanges skipping send of object %s\n",
1861 ldb_dn_get_linearized(msg->dn)));
1862 /* no attributes to send */
1863 talloc_free(obj);
1864 continue;
1865 }
1866
1867 r->out.ctr->ctr6.object_count++;
1868
1869 *currentObject = obj;
1870 currentObject = &obj->next_object;
1871
1872 talloc_free(getnc_state->last_dn);
1873 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
1874
1875 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
1876
1877 talloc_free(msg_res);
1878 talloc_free(msg_dn);
1879 }
1880
1881 getnc_state->num_processed = i;
1882
1883 r->out.ctr->ctr6.nc_object_count = getnc_state->num_records;
1884
1885 /* the client can us to call UpdateRefs on its behalf to
1886 re-establish monitoring of the NC */
1887 if ((req10->replica_flags & (DRSUAPI_DRS_ADD_REF | DRSUAPI_DRS_REF_GCSPN)) &&
1888 !GUID_all_zero(&req10->destination_dsa_guid)) {
1889 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
1890 DEBUG(3,("UpdateRefs on getncchanges for %s\n",
1891 GUID_string(mem_ctx, &req10->destination_dsa_guid)));
1892 ureq.naming_context = ncRoot;
1893 ureq.dest_dsa_dns_name = samdb_ntds_msdcs_dns_name(b_state->sam_ctx, mem_ctx,
1894 &req10->destination_dsa_guid);
1895 if (!ureq.dest_dsa_dns_name) {
1896 return WERR_NOMEM;
1897 }
1898 ureq.dest_dsa_guid = req10->destination_dsa_guid;
1899 ureq.options = DRSUAPI_DRS_ADD_REF |
1900 DRSUAPI_DRS_ASYNC_OP |
1901 DRSUAPI_DRS_GETCHG_CHECK;
1902
1903 /* we also need to pass through the
1904 DRSUAPI_DRS_REF_GCSPN bit so that repsTo gets flagged
1905 to send notifies using the GC SPN */
1906 ureq.options |= (req10->replica_flags & DRSUAPI_DRS_REF_GCSPN);
1907
1908 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
1909 if (!W_ERROR_IS_OK(werr)) {
1910 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
1911 win_errstr(werr)));
1912 }
1913 }
1914
1915 /*
1916 * TODO:
1917 * This is just a guess, how to calculate the
1918 * number of linked attributes to send, we need to
1919 * find out how to do this right.
1920 */
1921 if (r->out.ctr->ctr6.object_count >= max_links) {
1922 max_links = 0;
1923 } else {
1924 max_links -= r->out.ctr->ctr6.object_count;
1925 }
1926
1927 link_total = getnc_state->la_count;
1928
1929 if (i < getnc_state->num_records) {
1930 r->out.ctr->ctr6.more_data = true;
1931 } else {
1932 /* sort the whole array the first time */
1933 if (!getnc_state->la_sorted) {
1934 LDB_TYPESAFE_QSORT(getnc_state->la_list, getnc_state->la_count,
1935 sam_ctx, linked_attribute_compare);
1936 getnc_state->la_sorted = true;
1937 }
1938
1939 link_count = getnc_state->la_count - getnc_state->la_idx;
1940 link_count = MIN(max_links, link_count);
1941
1942 r->out.ctr->ctr6.linked_attributes_count = link_count;
1943 r->out.ctr->ctr6.linked_attributes = getnc_state->la_list + getnc_state->la_idx;
1944
1945 getnc_state->la_idx += link_count;
1946 link_given = getnc_state->la_idx;
1947
1948 if (getnc_state->la_idx < getnc_state->la_count) {
1949 r->out.ctr->ctr6.more_data = true;
1950 }
1951 }
1952
1953 if (!r->out.ctr->ctr6.more_data) {
1954 talloc_steal(mem_ctx, getnc_state->la_list);
1955
1956 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1957 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1958
1959 werr = get_nc_changes_udv(sam_ctx, getnc_state->ncRoot_dn,
1960 r->out.ctr->ctr6.uptodateness_vector);
1961 if (!W_ERROR_IS_OK(werr)) {
1962 return werr;
1963 }
1964
1965 talloc_free(getnc_state);
1966 b_state->getncchanges_state = NULL;
1967 }
1968
1969 if (req10->extended_op != DRSUAPI_EXOP_NONE) {
1970 r->out.ctr->ctr6.uptodateness_vector = NULL;
1971 r->out.ctr->ctr6.nc_object_count = 0;
1972 ZERO_STRUCT(r->out.ctr->ctr6.new_highwatermark);
1973 }
1974
1975 DEBUG(r->out.ctr->ctr6.more_data?4:2,
1976 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %u/%u) %u links (done %u/%u (as %s))\n",
1977 (unsigned long long)(req10->highwatermark.highest_usn+1),
1978 req10->replica_flags, drs_ObjectIdentifier_to_string(mem_ctx, ncRoot),
1979 r->out.ctr->ctr6.object_count,
1980 i, r->out.ctr->ctr6.more_data?getnc_state->num_records:i,
1981 r->out.ctr->ctr6.linked_attributes_count,
1982 link_given, link_total,
1983 dom_sid_string(mem_ctx, user_sid)));
1984
1985 #if 0
1986 if (!r->out.ctr->ctr6.more_data && req10->extended_op != DRSUAPI_EXOP_NONE) {
1987 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);
1988 }
1989 #endif
1990
1991 return WERR_OK;
1992 }
WIP