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First attempt to implement dcesrv_drsuapi_DsGetNCChanges

So far it returns the ctr6 responce without proper linked attributes
support and metadata. A couple of improvements are the filter in the search
uses '(uSNChanged>=N)', added extended dn search support, non-replicated attributes
are excluded from the result.
This commit is contained in:
Anatoliy Atanasov 2009-09-02 17:39:28 +03:00 committed by Andrew Tridgell
parent 957a9285c2
commit 38995d7cbb

View File

@ -236,6 +236,66 @@ static WERROR dcesrv_drsuapi_DsReplicaSync(struct dcesrv_call_state *dce_call, T
return WERR_OK;
}
int drsuapi_search_with_extended_dn(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_result **_res,
struct ldb_dn *basedn,
enum ldb_scope scope,
const char * const *attrs,
const char *format, ...)
{
va_list ap;
int ret;
struct ldb_request *req;
char *filter;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
tmp_ctx = talloc_new(mem_ctx);
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
return LDB_ERR_OPERATIONS_ERROR;
}
va_start(ap, format);
filter = talloc_vasprintf(tmp_ctx, format, ap);
va_end(ap);
if (filter == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
basedn,
scope,
filter,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(req);
*_res = res;
return ret;
}
/*
drsuapi_DsGetNCChanges
@ -243,7 +303,150 @@ static WERROR dcesrv_drsuapi_DsReplicaSync(struct dcesrv_call_state *dce_call, T
static WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
struct drsuapi_DsGetNCChanges *r)
{
DCESRV_FAULT(DCERPC_FAULT_OP_RNG_ERROR);
struct ldb_result *site_res;
struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
struct drsuapi_bind_state *b_state;
struct ldb_dn *ncRoot_dn;
int ret;
int i;
int j;
int uSN;
struct dsdb_schema *schema;
struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
time_t t = time(NULL);
NTTIME now;
struct drsuapi_DsReplicaObjectListItemEx *currentObject;
struct dom_sid *zero_sid;
struct ldb_dn *obj_dn;
b_state = talloc_zero(mem_ctx, struct drsuapi_bind_state);
W_ERROR_HAVE_NO_MEMORY(b_state);
zero_sid = talloc_zero(mem_ctx, struct dom_sid);
/*
* connect to the samdb
*/
b_state->sam_ctx = samdb_connect(b_state, dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx, dce_call->conn->auth_state.session_info);
if (!b_state->sam_ctx) {
return WERR_FOOBAR;
}
/* Check request revision. */
if (r->in.level != 8) {
return WERR_REVISION_MISMATCH;
}
/* Perform access checks. */
if (r->in.req->req8.naming_context == NULL) {
return WERR_DS_DRA_INVALID_PARAMETER;
}
ncRoot = r->in.req->req8.naming_context;
if (ncRoot == NULL) {
return WERR_DS_DRA_BAD_NC;
}
/* Construct response. */
ncRoot_dn = ldb_dn_new(mem_ctx, b_state->sam_ctx, ncRoot->dn);
ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, mem_ctx, &site_res,
ncRoot_dn, LDB_SCOPE_SUBTREE, NULL,
"(&(uSNChanged>=%lld)(objectClass=*))", r->in.req->req8.highwatermark.highest_usn);
if (ret != LDB_SUCCESS) {
return WERR_DS_DRA_INTERNAL_ERROR;
}
*r->out.level_out = 6;
r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
*r->out.ctr->ctr6.naming_context = *ncRoot;
/* TODO: linked attributes*/
r->out.ctr->ctr6.linked_attributes_count = 0;
r->out.ctr->ctr6.linked_attributes = NULL;
r->out.ctr->ctr6.object_count = 0;
r->out.ctr->ctr6.more_data = false;
r->out.ctr->ctr6.uptodateness_vector = NULL;
/* Prefix mapping */
schema = dsdb_get_schema(b_state->sam_ctx);
if (!schema) {
DEBUG(0,("No schema in b_state->sam_ctx"));
}
dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
r->out.ctr->ctr6.mapping_ctr = *ctr;
r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(b_state->sam_ctx));
r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(b_state->sam_ctx));
r->out.ctr->ctr6.old_highwatermark = r->in.req->req8.highwatermark;
r->out.ctr->ctr6.new_highwatermark = r->in.req->req8.highwatermark;
r->out.ctr->ctr6.first_object = talloc(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
currentObject = r->out.ctr->ctr6.first_object;
for(i=0; i<site_res->count; i++) {
uSN = ldb_msg_find_attr_as_int(site_res->msgs[i],"uSNChanged", -1);
r->out.ctr->ctr6.object_count++;
if (uSN > r->out.ctr->ctr6.new_highwatermark.highest_usn) {
r->out.ctr->ctr6.new_highwatermark.highest_usn = uSN;
}
if (ldb_dn_compare(ncRoot_dn, site_res->msgs[i]->dn) == 0) {
currentObject->is_nc_prefix = true;
currentObject->parent_object_guid = NULL;
} else {
currentObject->is_nc_prefix = false;
currentObject->parent_object_guid = talloc(mem_ctx, struct GUID);
*currentObject->parent_object_guid = samdb_result_guid(site_res->msgs[i], "parentGUID");
}
currentObject->next_object = NULL;
/* TODO: MetaData vector*/
currentObject->meta_data_ctr = talloc(mem_ctx, struct drsuapi_DsReplicaMetaDataCtr);
currentObject->meta_data_ctr->meta_data = talloc(mem_ctx, struct drsuapi_DsReplicaMetaData);
currentObject->meta_data_ctr->count = 0;
currentObject->object.identifier = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
obj_dn = ldb_msg_find_attr_as_dn(b_state->sam_ctx, mem_ctx, site_res->msgs[i], "distinguishedName");
currentObject->object.identifier->dn = ldb_dn_get_linearized(obj_dn);
currentObject->object.identifier->guid = GUID_zero();
currentObject->object.identifier->sid = *zero_sid;
currentObject->object.attribute_ctr.num_attributes = site_res->msgs[i]->num_elements;
/* Exclude non-replicate attributes from the responce.*/
for (j=0; j<site_res->msgs[i]->num_elements; j++) {
const struct dsdb_attribute *sa;
sa = dsdb_attribute_by_lDAPDisplayName(schema, site_res->msgs[i]->elements[j].name);
if (sa && sa->systemFlags & 0x00000001) {
ldb_msg_remove_attr(site_res->msgs[i], site_res->msgs[i]->elements[j].name);
currentObject->object.attribute_ctr.num_attributes--;
}
}
currentObject->object.attribute_ctr.attributes = talloc_array(mem_ctx, struct drsuapi_DsReplicaAttribute,
currentObject->object.attribute_ctr.num_attributes);
for (j=0; j<currentObject->object.attribute_ctr.num_attributes; j++) {
dsdb_attribute_ldb_to_drsuapi(b_state->sam_ctx, schema,&site_res->msgs[i]->elements[j], mem_ctx,
&currentObject->object.attribute_ctr.attributes[j]);
}
if (i == (site_res->count-1)) {
break;
}
currentObject->next_object = talloc(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
currentObject = currentObject->next_object;
}
r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
r->out.ctr->ctr6.uptodateness_vector->version = 2;
r->out.ctr->ctr6.uptodateness_vector->count = 1;
r->out.ctr->ctr6.uptodateness_vector->reserved1 = 0;
r->out.ctr->ctr6.uptodateness_vector->reserved2 = 0;
r->out.ctr->ctr6.uptodateness_vector->cursors = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2);
r->out.ctr->ctr6.uptodateness_vector->cursors[0].source_dsa_invocation_id = *(samdb_ntds_invocation_id(b_state->sam_ctx));
r->out.ctr->ctr6.uptodateness_vector->cursors[0].highest_usn = r->out.ctr->ctr6.new_highwatermark.highest_usn;
unix_to_nt_time(&now, t);
r->out.ctr->ctr6.uptodateness_vector->cursors[0].last_sync_success = now;
return WERR_OK;
}