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/*
Unix SMB/CIFS implementation.
KCC service periodic handling
Copyright (C) Crístian Deives
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "lib/events/events.h"
#include "dsdb/samdb/samdb.h"
#include "auth/auth.h"
#include "smbd/service.h"
#include "lib/messaging/irpc.h"
#include "dsdb/kcc/kcc_connection.h"
#include "dsdb/kcc/kcc_service.h"
#include "lib/ldb/include/ldb_errors.h"
#include "../lib/util/dlinklist.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_drsuapi.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "param/param.h"
static int kccsrv_add_connection(struct kccsrv_service *s,
struct kcc_connection *conn)
{
struct ldb_message *msg;
TALLOC_CTX *tmp_ctx;
struct ldb_dn *new_dn, *server_dn;
struct GUID guid;
/* struct ldb_val schedule_val; */
int ret;
bool ok;
tmp_ctx = talloc_new(s);
new_dn = samdb_ntds_settings_dn(s->samdb);
if (!new_dn) {
DEBUG(0, ("failed to find NTDS settings\n"));
ret = LDB_ERR_OPERATIONS_ERROR;
goto done;
}
new_dn = ldb_dn_copy(tmp_ctx, new_dn);
if (!new_dn) {
DEBUG(0, ("failed to copy NTDS settings\n"));
ret = LDB_ERR_OPERATIONS_ERROR;
goto done;
}
guid = GUID_random();
ok = ldb_dn_add_child_fmt(new_dn, "CN=%s", GUID_string(tmp_ctx, &guid));
if (!ok) {
DEBUG(0, ("failed to create nTDSConnection DN\n"));
ret = LDB_ERR_INVALID_DN_SYNTAX;
goto done;
}
ret = dsdb_find_dn_by_guid(s->samdb, tmp_ctx, GUID_string(tmp_ctx,
&conn->dsa_guid), &server_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("failed to find fromServer DN '%s'\n",
GUID_string(tmp_ctx, &conn->dsa_guid)));
goto done;
}
/*schedule_val = data_blob_const(r1->schedule, sizeof(r1->schedule));*/
msg = ldb_msg_new(tmp_ctx);
msg->dn = new_dn;
ldb_msg_add_string(msg, "objectClass", "nTDSConnection");
ldb_msg_add_string(msg, "showInAdvancedViewOnly", "TRUE");
ldb_msg_add_string(msg, "enabledConnection", "TRUE");
ldb_msg_add_linearized_dn(msg, "fromServer", server_dn);
/* ldb_msg_add_value(msg, "schedule", &schedule_val, NULL); */
ldb_msg_add_string(msg, "options", "1");
ret = ldb_add(s->samdb, msg);
if (ret == LDB_SUCCESS) {
DEBUG(2, ("added nTDSConnection object '%s'\n",
ldb_dn_get_linearized(new_dn)));
} else {
DEBUG(0, ("failed to add an nTDSConnection object: %s\n",
ldb_strerror(ret)));
}
done:
talloc_free(tmp_ctx);
return ret;
}
static int kccsrv_delete_connection(struct kccsrv_service *s,
struct kcc_connection *conn)
{
TALLOC_CTX *tmp_ctx;
struct ldb_dn *dn;
int ret;
tmp_ctx = talloc_new(s);
ret = dsdb_find_dn_by_guid(s->samdb, tmp_ctx,
GUID_string(tmp_ctx, &conn->obj_guid), &dn);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("failed to find nTDSConnection's DN: %s\n",
ldb_strerror(ret)));
goto done;
}
ret = ldb_delete(s->samdb, dn);
if (ret == LDB_SUCCESS) {
DEBUG(2, ("deleted nTDSConnection object '%s'\n",
ldb_dn_get_linearized(dn)));
} else {
DEBUG(0, ("failed to delete an nTDSConnection object: %s\n",
ldb_strerror(ret)));
}
done:
talloc_free(tmp_ctx);
return ret;
}
void kccsrv_apply_connections(struct kccsrv_service *s,
struct kcc_connection_list *ntds_list,
struct kcc_connection_list *dsa_list)
{
int i, j, deleted = 0, added = 0, ret;
for (i = 0; i < ntds_list->count; i++) {
struct kcc_connection *ntds = &ntds_list->servers[i];
for (j = 0; j < dsa_list->count; j++) {
struct kcc_connection *dsa = &dsa_list->servers[j];
if (GUID_equal(&ntds->dsa_guid, &dsa->dsa_guid)) {
break;
}
}
if (j == dsa_list->count) {
ret = kccsrv_delete_connection(s, ntds);
if (ret == LDB_SUCCESS) {
deleted++;
}
}
}
DEBUG(4, ("%d connections have been deleted\n", deleted));
for (i = 0; i < dsa_list->count; i++) {
struct kcc_connection *dsa = &dsa_list->servers[i];
for (j = 0; j < ntds_list->count; j++) {
struct kcc_connection *ntds = &ntds_list->servers[j];
if (GUID_equal(&dsa->dsa_guid, &ntds->dsa_guid)) {
break;
}
}
if (j == ntds_list->count) {
ret = kccsrv_add_connection(s, dsa);
if (ret == LDB_SUCCESS) {
added++;
}
}
}
DEBUG(4, ("%d connections have been added\n", added));
}
struct kcc_connection_list *kccsrv_find_connections(struct kccsrv_service *s,
TALLOC_CTX *mem_ctx)
{
int ret, i;
struct ldb_dn *base_dn;
struct ldb_result *res;
const char *attrs[] = { "objectGUID", "fromServer", NULL };
struct kcc_connection_list *list;
base_dn = samdb_ntds_settings_dn(s->samdb);
if (!base_dn) {
DEBUG(0, ("failed to find our own NTDS settings DN\n"));
return NULL;
}
ret = ldb_search(s->samdb, mem_ctx, &res, base_dn, LDB_SCOPE_ONELEVEL,
attrs, "objectClass=nTDSConnection");
if (ret != LDB_SUCCESS) {
DEBUG(0, ("failed nTDSConnection search: %s\n",
ldb_strerror(ret)));
return NULL;
}
list = talloc(mem_ctx, struct kcc_connection_list);
if (!list) {
DEBUG(0, ("out of memory"));
return NULL;
}
list->servers = talloc_array(mem_ctx, struct kcc_connection,
res->count);
if (!list->servers) {
DEBUG(0, ("out of memory"));
return NULL;
}
list->count = 0;
for (i = 0; i < res->count; i++) {
struct ldb_dn *server_dn;
list->servers[i].obj_guid = samdb_result_guid(res->msgs[i],
"objectGUID");
server_dn = samdb_result_dn(s->samdb, mem_ctx, res->msgs[i],
"fromServer", NULL);
ret = dsdb_find_guid_by_dn(s->samdb, server_dn,
&list->servers[i].dsa_guid);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("failed to find connection server's GUID"
"by DN=%s: %s\n",
ldb_dn_get_linearized(server_dn),
ldb_strerror(ret)));
continue;
}
list->count++;
}
DEBUG(4, ("found %d existing nTDSConnection objects\n", list->count));
return list;
}
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