#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "libcli/security/security.h"
#include "param/param.h"
+#include "dsdb/common/util.h"
+/*
+ load the partitions list based on replicated NC attributes in our
+ NTDSDSA object
+ */
WERROR dreplsrv_load_partitions(struct dreplsrv_service *s)
{
WERROR status;
- static const char *attrs[] = { "namingContexts", NULL };
- unsigned int i;
+ static const char *attrs[] = { "hasMasterNCs", "msDS-hasMasterNCs", "hasPartialReplicaNCs", "msDS-HasFullReplicaNCs", NULL };
+ unsigned int a;
int ret;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
struct ldb_message_element *el;
+ struct ldb_dn *ntds_dn;
tmp_ctx = talloc_new(s);
W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
- ret = ldb_search(s->samdb, tmp_ctx, &res,
- ldb_dn_new(tmp_ctx, s->samdb, ""), LDB_SCOPE_BASE, attrs, NULL);
- if (ret != LDB_SUCCESS) {
- DEBUG(1,("Searching for namingContexts in rootDSE failed: %s\n", ldb_errstring(s->samdb)));
+ ntds_dn = samdb_ntds_settings_dn(s->samdb, tmp_ctx);
+ if (!ntds_dn) {
+ DEBUG(1,(__location__ ": Unable to find ntds_dn: %s\n", ldb_errstring(s->samdb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
- }
-
- el = ldb_msg_find_element(res->msgs[0], "namingContexts");
- if (!el) {
- DEBUG(1,("Finding namingContexts element in root_res failed: %s\n",
- ldb_errstring(s->samdb)));
- talloc_free(tmp_ctx);
- return WERR_DS_DRA_INTERNAL_ERROR;
- }
-
- for (i=0; i<el->num_values; i++) {
- struct ldb_dn *pdn;
- struct dreplsrv_partition *p;
-
- pdn = ldb_dn_from_ldb_val(tmp_ctx, s->samdb, &el->values[i]);
- if (pdn == NULL) {
- talloc_free(tmp_ctx);
- return WERR_DS_DRA_INTERNAL_ERROR;
- }
- if (!ldb_dn_validate(pdn)) {
- return WERR_DS_DRA_INTERNAL_ERROR;
- }
-
- p = talloc_zero(s, struct dreplsrv_partition);
- W_ERROR_HAVE_NO_MEMORY(p);
+ }
- p->dn = talloc_steal(p, pdn);
+ ret = dsdb_search_dn(s->samdb, tmp_ctx, &res, ntds_dn, attrs, DSDB_SEARCH_SHOW_EXTENDED_DN);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(1,("Searching for hasMasterNCs in NTDS DN failed: %s\n", ldb_errstring(s->samdb)));
+ talloc_free(tmp_ctx);
+ return WERR_DS_DRA_INTERNAL_ERROR;
+ }
- DLIST_ADD(s->partitions, p);
+ for (a=0; attrs[a]; a++) {
+ int i;
- DEBUG(2, ("dreplsrv_partition[%s] loaded\n", ldb_dn_get_linearized(p->dn)));
+ el = ldb_msg_find_element(res->msgs[0], attrs[a]);
+ if (el == NULL) {
+ continue;
+ }
+ for (i=0; i<el->num_values; i++) {
+ struct ldb_dn *pdn;
+ struct dreplsrv_partition *p, *tp;
+ bool found;
+
+ pdn = ldb_dn_from_ldb_val(tmp_ctx, s->samdb, &el->values[i]);
+ if (pdn == NULL) {
+ talloc_free(tmp_ctx);
+ return WERR_DS_DRA_INTERNAL_ERROR;
+ }
+ if (!ldb_dn_validate(pdn)) {
+ return WERR_DS_DRA_INTERNAL_ERROR;
+ }
+
+ p = talloc_zero(s, struct dreplsrv_partition);
+ W_ERROR_HAVE_NO_MEMORY(p);
+
+ p->dn = talloc_steal(p, pdn);
+ p->service = s;
+
+ if (strcasecmp(attrs[a], "hasPartialReplicaNCs") == 0) {
+ p->partial_replica = true;
+ } else if (strcasecmp(attrs[a], "msDS-HasFullReplicaNCs") == 0) {
+ p->rodc_replica = true;
+ }
+
+ /* Do not add partitions more than once */
+ found = false;
+ for (tp = s->partitions; tp; tp = tp->next) {
+ if (ldb_dn_compare(tp->dn, p->dn) == 0) {
+ found = true;
+ break;
+ }
+ }
+ if (found) {
+ talloc_free(p);
+ continue;
+ }
+
+ DLIST_ADD(s->partitions, p);
+ DEBUG(2, ("dreplsrv_partition[%s] loaded\n", ldb_dn_get_linearized(p->dn)));
+ }
}
talloc_free(tmp_ctx);
return WERR_OK;
}
+/*
+ Check if particular SPN exists for an account
+ */
+static bool dreplsrv_spn_exists(struct ldb_context *samdb, struct ldb_dn *account_dn,
+ const char *principal_name)
+{
+ TALLOC_CTX *tmp_ctx;
+ const char *attrs_empty[] = { NULL };
+ int ret;
+ struct ldb_result *res;
+
+ tmp_ctx = talloc_new(samdb);
+
+ ret = dsdb_search(samdb, tmp_ctx, &res, account_dn, LDB_SCOPE_BASE, attrs_empty,
+ 0, "servicePrincipalName=%s",
+ ldb_binary_encode_string(tmp_ctx, principal_name));
+ if (ret != LDB_SUCCESS || res->count != 1) {
+ talloc_free(tmp_ctx);
+ return false;
+ }
+
+ talloc_free(tmp_ctx);
+ return true;
+}
+
/*
work out the principal to use for DRS replication connections
*/
{
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
- const char *attrs[] = { "dNSHostName", NULL };
+ const char *attrs_server[] = { "dNSHostName", "serverReference", NULL };
+ const char *attrs_ntds[] = { "msDS-HasDomainNCs", "hasMasterNCs", NULL };
int ret;
- const char *hostname;
- struct ldb_dn *dn;
+ const char *hostname, *dnsdomain=NULL;
+ struct ldb_dn *ntds_dn, *server_dn, *computer_dn;
+ struct ldb_dn *forest_dn, *nc_dn;
*target_principal = NULL;
tmp_ctx = talloc_new(mem_ctx);
/* we need to find their hostname */
- ret = dsdb_find_dn_by_guid(s->samdb, tmp_ctx, &rft->source_dsa_obj_guid, &dn);
+ ret = dsdb_find_dn_by_guid(s->samdb, tmp_ctx, &rft->source_dsa_obj_guid, &ntds_dn);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
/* its OK for their NTDSDSA DN not to be in our database */
return NT_STATUS_OK;
}
+ server_dn = ldb_dn_copy(tmp_ctx, ntds_dn);
+ if (server_dn == NULL) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_OK;
+ }
+
/* strip off the NTDS Settings */
- if (!ldb_dn_remove_child_components(dn, 1)) {
+ if (!ldb_dn_remove_child_components(server_dn, 1)) {
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
- ret = dsdb_search_dn(s->samdb, tmp_ctx, &res, dn, attrs, 0);
+ ret = dsdb_search_dn(s->samdb, tmp_ctx, &res, server_dn, attrs_server, 0);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
- /* its OK for their account DN not to be in our database */
+ /* its OK for their server DN not to be in our database */
+ return NT_STATUS_OK;
+ }
+
+ forest_dn = ldb_get_root_basedn(s->samdb);
+ if (forest_dn == NULL) {
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
- if (hostname == NULL) {
+ computer_dn = ldb_msg_find_attr_as_dn(s->samdb, tmp_ctx, res->msgs[0], "serverReference");
+ if (hostname != NULL && computer_dn != NULL) {
+ char *local_principal;
+
+ /*
+ if we have the dNSHostName attribute then we can use
+ the GC/hostname/realm SPN. All DCs should have this SPN
+
+ Windows DC may set up it's dNSHostName before setting up
+ GC/xx/xx SPN. So make sure it exists, before using it.
+ */
+ local_principal = talloc_asprintf(mem_ctx, "GC/%s/%s",
+ hostname,
+ samdb_dn_to_dns_domain(tmp_ctx, forest_dn));
+ if (dreplsrv_spn_exists(s->samdb, computer_dn, local_principal)) {
+ *target_principal = local_principal;
+ talloc_free(tmp_ctx);
+ return NT_STATUS_OK;
+ }
+
+ talloc_free(local_principal);
+ }
+
+ /*
+ if we can't find the dNSHostName then we will try for the
+ E3514235-4B06-11D1-AB04-00C04FC2DCD2/${NTDSGUID}/${DNSDOMAIN}
+ SPN. To use that we need the DNS domain name of the target
+ DC. We find that by first looking for the msDS-HasDomainNCs
+ in the NTDSDSA object of the DC, and if we don't find that,
+ then we look for the hasMasterNCs attribute, and eliminate
+ the known schema and configuruation DNs. Despite how
+ bizarre this seems, Hongwei tells us that this is in fact
+ what windows does to find the SPN!!
+ */
+ ret = dsdb_search_dn(s->samdb, tmp_ctx, &res, ntds_dn, attrs_ntds, 0);
+ if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
- /* its OK to not have a dnshostname */
return NT_STATUS_OK;
}
- /* All DCs have the GC/hostname/realm name, but if some of the
- * preconditions are not satisfied, then we will fall back to
- * the
- * E3514235-4B06-11D1-AB04-00C04FC2DCD2/${NTDSGUID}/${DNSDOMAIN}
- * name. This means that if a AD server has a dnsHostName set
- * on it's record, it must also have GC/hostname/realm
- * servicePrincipalName */
+ nc_dn = ldb_msg_find_attr_as_dn(s->samdb, tmp_ctx, res->msgs[0], "msDS-HasDomainNCs");
+ if (nc_dn != NULL) {
+ dnsdomain = samdb_dn_to_dns_domain(tmp_ctx, nc_dn);
+ }
+
+ if (dnsdomain == NULL) {
+ struct ldb_message_element *el;
+ int i;
+ el = ldb_msg_find_element(res->msgs[0], "hasMasterNCs");
+ for (i=0; el && i<el->num_values; i++) {
+ nc_dn = ldb_dn_from_ldb_val(tmp_ctx, s->samdb, &el->values[i]);
+ if (nc_dn == NULL ||
+ ldb_dn_compare(ldb_get_config_basedn(s->samdb), nc_dn) == 0 ||
+ ldb_dn_compare(ldb_get_schema_basedn(s->samdb), nc_dn) == 0) {
+ continue;
+ }
+ /* it must be a domain DN, get the equivalent
+ DNS domain name */
+ dnsdomain = samdb_dn_to_dns_domain(tmp_ctx, nc_dn);
+ break;
+ }
+ }
+
+ if (dnsdomain != NULL) {
+ *target_principal = talloc_asprintf(mem_ctx,
+ "E3514235-4B06-11D1-AB04-00C04FC2DCD2/%s/%s",
+ GUID_string(tmp_ctx, &rft->source_dsa_obj_guid),
+ dnsdomain);
+ }
- *target_principal = talloc_asprintf(mem_ctx, "GC/%s/%s",
- hostname,
- lpcfg_dnsdomain(s->task->lp_ctx));
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
return WERR_OK;
}
+/**
+ * Find a partition when given a NC
+ * If the NC can't be found it will return BAD_NC
+ * Initial checks for invalid parameters have to be done beforehand
+ */
WERROR dreplsrv_partition_find_for_nc(struct dreplsrv_service *s,
- const struct GUID *nc_guid,
- const struct dom_sid *nc_sid,
+ struct GUID *nc_guid,
+ struct dom_sid *nc_sid,
const char *nc_dn_str,
struct dreplsrv_partition **_p)
{
valid_sid = nc_sid && !dom_sid_equal(&null_sid, nc_sid);
valid_guid = nc_guid && !GUID_all_zero(nc_guid);
- if (!valid_sid && !valid_guid && !nc_dn_str) {
- return WERR_DS_DRA_INVALID_PARAMETER;
+ if (!valid_sid && !valid_guid && (!nc_dn_str)) {
+ return WERR_DS_DRA_BAD_NC;
}
for (p = s->partitions; p; p = p->next) {
|| strequal(p->nc.dn, nc_dn_str)
|| (valid_sid && dom_sid_equal(&p->nc.sid, nc_sid)))
{
+ /* fill in he right guid and sid if possible */
+ if (nc_guid && !valid_guid) {
+ dsdb_get_extended_dn_guid(p->dn, nc_guid, "GUID");
+ }
+ if (nc_sid && !valid_sid) {
+ dsdb_get_extended_dn_sid(p->dn, nc_sid, "SID");
+ }
*_p = p;
return WERR_OK;
}
}
+/*
+ create a temporary dsa structure for a replication. This is needed
+ for the initial replication of a new partition, such as when a new
+ domain NC is created and we are a global catalog server
+ */
+WERROR dreplsrv_partition_source_dsa_temporary(struct dreplsrv_partition *p,
+ TALLOC_CTX *mem_ctx,
+ const struct GUID *dsa_guid,
+ struct dreplsrv_partition_source_dsa **_dsa)
+{
+ struct dreplsrv_partition_source_dsa *dsa;
+ WERROR werr;
+
+ dsa = talloc_zero(mem_ctx, struct dreplsrv_partition_source_dsa);
+ W_ERROR_HAVE_NO_MEMORY(dsa);
+
+ dsa->partition = p;
+ dsa->repsFrom1 = &dsa->_repsFromBlob.ctr.ctr1;
+ dsa->repsFrom1->replica_flags = 0;
+ dsa->repsFrom1->source_dsa_obj_guid = *dsa_guid;
+
+ dsa->repsFrom1->other_info = talloc_zero(dsa, struct repsFromTo1OtherInfo);
+ W_ERROR_HAVE_NO_MEMORY(dsa->repsFrom1->other_info);
+
+ dsa->repsFrom1->other_info->dns_name = samdb_ntds_msdcs_dns_name(p->service->samdb,
+ dsa->repsFrom1->other_info, dsa_guid);
+ W_ERROR_HAVE_NO_MEMORY(dsa->repsFrom1->other_info->dns_name);
+
+ werr = dreplsrv_out_connection_attach(p->service, dsa->repsFrom1, &dsa->conn);
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(0,(__location__ ": Failed to attach connection to %s\n",
+ ldb_dn_get_linearized(p->dn)));
+ talloc_free(dsa);
+ return werr;
+ }
+
+ *_dsa = dsa;
+
+ return WERR_OK;
+}
+
+
static WERROR dreplsrv_refresh_partition(struct dreplsrv_service *s,
struct dreplsrv_partition *p)
{
WERROR status;
- struct dom_sid *nc_sid;
+ NTSTATUS ntstatus;
struct ldb_message_element *orf_el = NULL;
- struct ldb_result *r;
+ struct ldb_result *r = NULL;
unsigned int i;
int ret;
TALLOC_CTX *mem_ctx = talloc_new(p);
static const char *attrs[] = {
- "objectSid",
- "objectGUID",
"repsFrom",
"repsTo",
NULL
};
+ struct ldb_dn *dn;
DEBUG(4, ("dreplsrv_refresh_partition(%s)\n",
ldb_dn_get_linearized(p->dn)));
- ret = ldb_search(s->samdb, mem_ctx, &r, p->dn, LDB_SCOPE_BASE, attrs,
- "(objectClass=*)");
- if (ret != LDB_SUCCESS) {
+ ret = dsdb_search_dn(s->samdb, mem_ctx, &r, p->dn, attrs, DSDB_SEARCH_SHOW_EXTENDED_DN);
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ /* we haven't replicated the partition yet, but we
+ * can fill in the guid, sid etc from the partition DN */
+ dn = p->dn;
+ } else if (ret != LDB_SUCCESS) {
talloc_free(mem_ctx);
return WERR_FOOBAR;
+ } else {
+ dn = r->msgs[0]->dn;
}
talloc_free(discard_const(p->nc.dn));
ZERO_STRUCT(p->nc);
- p->nc.dn = ldb_dn_alloc_linearized(p, p->dn);
+ p->nc.dn = ldb_dn_alloc_linearized(p, dn);
W_ERROR_HAVE_NO_MEMORY(p->nc.dn);
- p->nc.guid = samdb_result_guid(r->msgs[0], "objectGUID");
- nc_sid = samdb_result_dom_sid(p, r->msgs[0], "objectSid");
- if (nc_sid) {
- p->nc.sid = *nc_sid;
- talloc_free(nc_sid);
+ ntstatus = dsdb_get_extended_dn_guid(dn, &p->nc.guid, "GUID");
+ if (!NT_STATUS_IS_OK(ntstatus)) {
+ DEBUG(0,(__location__ ": unable to get GUID for %s: %s\n",
+ p->nc.dn, nt_errstr(ntstatus)));
+ talloc_free(mem_ctx);
+ return WERR_DS_DRA_INTERNAL_ERROR;
}
+ dsdb_get_extended_dn_sid(dn, &p->nc.sid, "SID");
talloc_free(p->uptodatevector.cursors);
talloc_free(p->uptodatevector_ex.cursors);
DEBUG(4,(__location__ ": no UDV available for %s\n", ldb_dn_get_linearized(p->dn)));
}
- orf_el = ldb_msg_find_element(r->msgs[0], "repsFrom");
- if (orf_el) {
+ status = WERR_OK;
+
+ if (r != NULL && (orf_el = ldb_msg_find_element(r->msgs[0], "repsFrom"))) {
for (i=0; i < orf_el->num_values; i++) {
- status = dreplsrv_partition_add_source_dsa(s, p, &p->sources,
+ status = dreplsrv_partition_add_source_dsa(s, p, &p->sources,
NULL, &orf_el->values[i]);
- W_ERROR_NOT_OK_RETURN(status);
+ W_ERROR_NOT_OK_GOTO_DONE(status);
}
}
- orf_el = ldb_msg_find_element(r->msgs[0], "repsTo");
- if (orf_el) {
+ if (r != NULL && (orf_el = ldb_msg_find_element(r->msgs[0], "repsTo"))) {
for (i=0; i < orf_el->num_values; i++) {
- status = dreplsrv_partition_add_source_dsa(s, p, &p->notifies,
+ status = dreplsrv_partition_add_source_dsa(s, p, &p->notifies,
p->sources, &orf_el->values[i]);
- W_ERROR_NOT_OK_RETURN(status);
+ W_ERROR_NOT_OK_GOTO_DONE(status);
}
}
+done:
talloc_free(mem_ctx);
-
- return WERR_OK;
+ return status;
}
WERROR dreplsrv_refresh_partitions(struct dreplsrv_service *s)
git.samba.org / abartlet / samba-debian.git / blobdiff