diff options
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/naming_fsmo.c')
| -rw-r--r-- | source4/dsdb/samdb/ldb_modules/naming_fsmo.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/naming_fsmo.c b/source4/dsdb/samdb/ldb_modules/naming_fsmo.c new file mode 100644 index 0000000000..084540f68d --- /dev/null +++ b/source4/dsdb/samdb/ldb_modules/naming_fsmo.c @@ -0,0 +1,123 @@ +/* + 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 "lib/ldb/include/ldb.h" +#include "lib/ldb/include/ldb_errors.h" +#include "lib/ldb/include/ldb_private.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" + +static int naming_fsmo_init(struct ldb_module *module) +{ + 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 + }; + + mem_ctx = talloc_new(module); + if (!mem_ctx) { + ldb_oom(module->ldb); + return LDB_ERR_OPERATIONS_ERROR; + } + + naming_dn = samdb_partitions_dn(module->ldb, mem_ctx); + if (!naming_dn) { + ldb_debug(module->ldb, LDB_DEBUG_WARNING, + "naming_fsmo_init: no partitions dn present: (skip loading of naming contexts details)\n"); + talloc_free(mem_ctx); + return ldb_next_init(module); + } + + naming_fsmo = talloc_zero(mem_ctx, struct dsdb_naming_fsmo); + if (!naming_fsmo) { + ldb_oom(module->ldb); + return LDB_ERR_OPERATIONS_ERROR; + } + module->private_data = naming_fsmo; + + ret = ldb_search(module->ldb, naming_dn, + LDB_SCOPE_BASE, + NULL, naming_attrs, + &naming_res); + if (ret == LDB_ERR_NO_SUCH_OBJECT) { + ldb_debug(module->ldb, LDB_DEBUG_WARNING, + "naming_fsmo_init: no partitions dn present: (skip loading of naming contexts details)\n"); + talloc_free(mem_ctx); + return ldb_next_init(module); + } + if (ret != LDB_SUCCESS) { + ldb_debug_set(module->ldb, LDB_DEBUG_FATAL, + "naming_fsmo_init: failed to search the cross-ref container: %s: %s", + ldb_strerror(ret), ldb_errstring(module->ldb)); + talloc_free(mem_ctx); + return ret; + } + talloc_steal(mem_ctx, naming_res); + if (naming_res->count == 0) { + ldb_debug(module->ldb, LDB_DEBUG_WARNING, + "naming_fsmo_init: no cross-ref container present: (skip loading of naming contexts details)\n"); + talloc_free(mem_ctx); + return ldb_next_init(module); + } else if (naming_res->count > 1) { + ldb_debug_set(module->ldb, LDB_DEBUG_FATAL, + "naming_fsmo_init: [%u] cross-ref containers found on a base search", + naming_res->count); + talloc_free(mem_ctx); + return LDB_ERR_CONSTRAINT_VIOLATION; + } + + naming_fsmo->master_dn = ldb_msg_find_attr_as_dn(module->ldb, naming_fsmo, naming_res->msgs[0], "fSMORoleOwner"); + if (ldb_dn_compare(samdb_ntds_settings_dn(module->ldb), naming_fsmo->master_dn) == 0) { + naming_fsmo->we_are_master = true; + } else { + naming_fsmo->we_are_master = false; + } + + if (ldb_set_opaque(module->ldb, "dsdb_naming_fsmo", naming_fsmo) != LDB_SUCCESS) { + ldb_oom(module->ldb); + return LDB_ERR_OPERATIONS_ERROR; + } + + talloc_steal(module, naming_fsmo); + + ldb_debug(module->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); +} + +_PUBLIC_ const struct ldb_module_ops ldb_naming_fsmo_module_ops = { + .name = "naming_fsmo", + .init_context = naming_fsmo_init +}; |