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/*
Unix SMB/CIFS mplementation.
The module that handles the Domain Naming FSMO Role Owner
checkings
Copyright (C) Stefan Metzmacher 2007
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 "ldb_module.h"
#include "dsdb/samdb/samdb.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_drsuapi.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "../lib/util/dlinklist.h"
#include "dsdb/samdb/ldb_modules/util.h"
static int naming_fsmo_init(struct ldb_module *module)
{
struct ldb_context *ldb;
TALLOC_CTX *mem_ctx;
struct ldb_dn *naming_dn;
struct dsdb_naming_fsmo *naming_fsmo;
struct ldb_result *naming_res;
int ret;
static const char *naming_attrs[] = {
"fSMORoleOwner",
NULL
};
ldb = ldb_module_get_ctx(module);
mem_ctx = talloc_new(module);
if (!mem_ctx) {
return ldb_oom(ldb);
}
naming_dn = samdb_partitions_dn(ldb, mem_ctx);
if (!naming_dn) {
ldb_debug_set(ldb, LDB_DEBUG_FATAL,
"naming_fsmo_init: unable to determine partitions dn");
talloc_free(mem_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
naming_fsmo = talloc_zero(mem_ctx, struct dsdb_naming_fsmo);
if (!naming_fsmo) {
return ldb_oom(ldb);
}
ldb_module_set_private(module, naming_fsmo);
ret = dsdb_module_search_dn(module, mem_ctx, &naming_res,
naming_dn,
naming_attrs,
DSDB_FLAG_NEXT_MODULE, NULL);
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
ldb_debug(ldb, LDB_DEBUG_TRACE,
"naming_fsmo_init: no partitions dn present: (skip loading of naming contexts details)");
talloc_free(mem_ctx);
return ldb_next_init(module);
}
naming_fsmo->master_dn = ldb_msg_find_attr_as_dn(ldb, naming_fsmo, naming_res->msgs[0], "fSMORoleOwner");
if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), naming_fsmo->master_dn) == 0) {
naming_fsmo->we_are_master = true;
} else {
naming_fsmo->we_are_master = false;
}
if (ldb_set_opaque(ldb, "dsdb_naming_fsmo", naming_fsmo) != LDB_SUCCESS) {
return ldb_oom(ldb);
}
talloc_steal(module, naming_fsmo);
ldb_debug(ldb, LDB_DEBUG_TRACE,
"naming_fsmo_init: we are master: %s\n",
(naming_fsmo->we_are_master?"yes":"no"));
talloc_free(mem_ctx);
return ldb_next_init(module);
}
static const struct ldb_module_ops ldb_naming_fsmo_module_ops = {
.name = "naming_fsmo",
.init_context = naming_fsmo_init
};
int ldb_naming_fsmo_module_init(const char *version)
{
LDB_MODULE_CHECK_VERSION(version);
return ldb_register_module(&ldb_naming_fsmo_module_ops);
}
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