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Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/schema_fsmo.c')
-rw-r--r--source4/dsdb/samdb/ldb_modules/schema_fsmo.c499
1 files changed, 499 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/schema_fsmo.c b/source4/dsdb/samdb/ldb_modules/schema_fsmo.c
new file mode 100644
index 0000000000..edd451255e
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/schema_fsmo.c
@@ -0,0 +1,499 @@
+/*
+ Unix SMB/CIFS mplementation.
+
+ The module that handles the Schema FSMO Role Owner
+ checkings, it also loads the dsdb_schema.
+
+ Copyright (C) Stefan Metzmacher <metze@samba.org> 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 "param/param.h"
+
+static int generate_objectClasses(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema);
+static int generate_attributeTypes(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema);
+static int generate_dITContentRules(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema);
+static int generate_extendedAttributeInfo(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema);
+static int generate_extendedClassInfo(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema);
+
+static const struct {
+ const char *attr;
+ int (*fn)(struct ldb_context *, struct ldb_message *, const struct dsdb_schema *);
+} generated_attrs[] = {
+ {
+ .attr = "objectClasses",
+ .fn = generate_objectClasses
+ },
+ {
+ .attr = "attributeTypes",
+ .fn = generate_attributeTypes
+ },
+ {
+ .attr = "dITContentRules",
+ .fn = generate_dITContentRules
+ },
+ {
+ .attr = "extendedAttributeInfo",
+ .fn = generate_extendedAttributeInfo
+ },
+ {
+ .attr = "extendedClassInfo",
+ .fn = generate_extendedClassInfo
+ }
+};
+
+struct schema_fsmo_private_data {
+ struct ldb_dn *aggregate_dn;
+};
+
+struct schema_fsmo_search_data {
+ struct ldb_module *module;
+ struct ldb_request *req;
+
+ const struct dsdb_schema *schema;
+};
+
+static int schema_fsmo_init(struct ldb_module *module)
+{
+ struct ldb_context *ldb;
+ TALLOC_CTX *mem_ctx;
+ struct ldb_dn *schema_dn;
+ struct dsdb_schema *schema;
+ char *error_string = NULL;
+ int ret;
+ struct schema_fsmo_private_data *data;
+
+ ldb = ldb_module_get_ctx(module);
+ schema_dn = samdb_schema_dn(ldb);
+ if (!schema_dn) {
+ ldb_reset_err_string(ldb);
+ ldb_debug(ldb, LDB_DEBUG_WARNING,
+ "schema_fsmo_init: no schema dn present: (skip schema loading)\n");
+ return ldb_next_init(module);
+ }
+
+ data = talloc(module, struct schema_fsmo_private_data);
+ if (data == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* Check to see if this is a result on the CN=Aggregate schema */
+ data->aggregate_dn = ldb_dn_copy(data, schema_dn);
+ if (!ldb_dn_add_child_fmt(data->aggregate_dn, "CN=Aggregate")) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ldb_module_set_private(module, data);
+
+ if (dsdb_get_schema(ldb)) {
+ return ldb_next_init(module);
+ }
+
+ mem_ctx = talloc_new(module);
+ if (!mem_ctx) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = dsdb_schema_from_schema_dn(mem_ctx, ldb,
+ lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
+ schema_dn, &schema, &error_string);
+
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ ldb_reset_err_string(ldb);
+ ldb_debug(ldb, LDB_DEBUG_WARNING,
+ "schema_fsmo_init: no schema head present: (skip schema loading)\n");
+ talloc_free(mem_ctx);
+ return ldb_next_init(module);
+ }
+
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb,
+ "schema_fsmo_init: dsdb_schema load failed: %s",
+ error_string);
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ /* dsdb_set_schema() steal schema into the ldb_context */
+ ret = dsdb_set_schema(ldb, schema);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug_set(ldb, LDB_DEBUG_FATAL,
+ "schema_fsmo_init: dsdb_set_schema() failed: %d:%s",
+ ret, ldb_strerror(ret));
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ talloc_free(mem_ctx);
+ return ldb_next_init(module);
+}
+
+static int schema_fsmo_add(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb;
+ struct dsdb_schema *schema;
+ const char *attributeID = NULL;
+ const char *governsID = NULL;
+ const char *oid_attr = NULL;
+ const char *oid = NULL;
+ uint32_t id32;
+ WERROR status;
+
+ ldb = ldb_module_get_ctx(module);
+
+ /* special objects should always go through */
+ if (ldb_dn_is_special(req->op.add.message->dn)) {
+ return ldb_next_request(module, req);
+ }
+
+ /* replicated update should always go through */
+ if (ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
+ return ldb_next_request(module, req);
+ }
+
+ schema = dsdb_get_schema(ldb);
+ if (!schema) {
+ return ldb_next_request(module, req);
+ }
+
+ if (!schema->fsmo.we_are_master) {
+ ldb_debug_set(ldb, LDB_DEBUG_ERROR,
+ "schema_fsmo_add: we are not master: reject request\n");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ attributeID = samdb_result_string(req->op.add.message, "attributeID", NULL);
+ governsID = samdb_result_string(req->op.add.message, "governsID", NULL);
+
+ if (attributeID) {
+ oid_attr = "attributeID";
+ oid = attributeID;
+ } else if (governsID) {
+ oid_attr = "governsID";
+ oid = governsID;
+ }
+
+ if (!oid) {
+ return ldb_next_request(module, req);
+ }
+
+ status = dsdb_map_oid2int(schema, oid, &id32);
+ if (W_ERROR_IS_OK(status)) {
+ return ldb_next_request(module, req);
+ } else if (!W_ERROR_EQUAL(WERR_DS_NO_MSDS_INTID, status)) {
+ ldb_debug_set(ldb, LDB_DEBUG_ERROR,
+ "schema_fsmo_add: failed to map %s[%s]: %s\n",
+ oid_attr, oid, win_errstr(status));
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ status = dsdb_create_prefix_mapping(ldb, schema, oid);
+ if (!W_ERROR_IS_OK(status)) {
+ ldb_debug_set(ldb, LDB_DEBUG_ERROR,
+ "schema_fsmo_add: failed to create prefix mapping for %s[%s]: %s\n",
+ oid_attr, oid, win_errstr(status));
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ return ldb_next_request(module, req);
+}
+
+static int schema_fsmo_extended(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb;
+ struct ldb_dn *schema_dn;
+ struct dsdb_schema *schema;
+ char *error_string = NULL;
+ int ret;
+ TALLOC_CTX *mem_ctx;
+
+ ldb = ldb_module_get_ctx(module);
+
+ if (strcmp(req->op.extended.oid, DSDB_EXTENDED_SCHEMA_UPDATE_NOW_OID) != 0) {
+ return ldb_next_request(module, req);
+ }
+
+ schema_dn = samdb_schema_dn(ldb);
+ if (!schema_dn) {
+ ldb_reset_err_string(ldb);
+ ldb_debug(ldb, LDB_DEBUG_WARNING,
+ "schema_fsmo_extended: no schema dn present: (skip schema loading)\n");
+ return ldb_next_request(module, req);
+ }
+
+ mem_ctx = talloc_new(module);
+ if (!mem_ctx) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = dsdb_schema_from_schema_dn(mem_ctx, ldb,
+ lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
+ schema_dn, &schema, &error_string);
+
+ if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+ ldb_reset_err_string(ldb);
+ ldb_debug(ldb, LDB_DEBUG_WARNING,
+ "schema_fsmo_extended: no schema head present: (skip schema loading)\n");
+ talloc_free(mem_ctx);
+ return ldb_next_request(module, req);
+ }
+
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb,
+ "schema_fsmo_extended: dsdb_schema load failed: %s",
+ error_string);
+ talloc_free(mem_ctx);
+ return ldb_next_request(module, req);
+ }
+
+ /* Replace the old schema*/
+ ret = dsdb_set_schema(ldb, schema);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug_set(ldb, LDB_DEBUG_FATAL,
+ "schema_fsmo_extended: dsdb_set_schema() failed: %d:%s",
+ ret, ldb_strerror(ret));
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ talloc_free(mem_ctx);
+ return LDB_SUCCESS;
+}
+
+static int generate_objectClasses(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema)
+{
+ const struct dsdb_class *sclass;
+ int ret;
+
+ for (sclass = schema->classes; sclass; sclass = sclass->next) {
+ ret = ldb_msg_add_string(msg, "objectClasses", schema_class_to_description(msg, sclass));
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ return LDB_SUCCESS;
+}
+static int generate_attributeTypes(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema)
+{
+ const struct dsdb_attribute *attribute;
+ int ret;
+
+ for (attribute = schema->attributes; attribute; attribute = attribute->next) {
+ ret = ldb_msg_add_string(msg, "attributeTypes", schema_attribute_to_description(msg, attribute));
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ return LDB_SUCCESS;
+}
+
+static int generate_dITContentRules(struct ldb_context *ldb, struct ldb_message *msg,
+ const struct dsdb_schema *schema)
+{
+ const struct dsdb_class *sclass;
+ int ret;
+
+ for (sclass = schema->classes; sclass; sclass = sclass->next) {
+ if (sclass->auxiliaryClass || sclass->systemAuxiliaryClass) {
+ char *ditcontentrule = schema_class_to_dITContentRule(msg, sclass, schema);
+ if (!ditcontentrule) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ret = ldb_msg_add_steal_string(msg, "dITContentRules", ditcontentrule);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ }
+ return LDB_SUCCESS;
+}
+
+static int generate_extendedAttributeInfo(struct ldb_context *ldb,
+ struct ldb_message *msg,
+ const struct dsdb_schema *schema)
+{
+ const struct dsdb_attribute *attribute;
+ int ret;
+
+ for (attribute = schema->attributes; attribute; attribute = attribute->next) {
+ char *val = schema_attribute_to_extendedInfo(msg, attribute);
+ if (!val) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_msg_add_string(msg, "extendedAttributeInfo", val);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int generate_extendedClassInfo(struct ldb_context *ldb,
+ struct ldb_message *msg,
+ const struct dsdb_schema *schema)
+{
+ const struct dsdb_class *sclass;
+ int ret;
+
+ for (sclass = schema->classes; sclass; sclass = sclass->next) {
+ char *val = schema_class_to_extendedInfo(msg, sclass);
+ if (!val) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_msg_add_string(msg, "extendedClassInfo", val);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* Add objectClasses, attributeTypes and dITContentRules from the
+ schema object (they are not stored in the database)
+ */
+static int schema_fsmo_search_callback(struct ldb_request *req, struct ldb_reply *ares)
+{
+ struct ldb_context *ldb;
+ struct schema_fsmo_search_data *ac;
+ struct schema_fsmo_private_data *mc;
+ int i, ret;
+
+ ac = talloc_get_type(req->context, struct schema_fsmo_search_data);
+ mc = talloc_get_type(ldb_module_get_private(ac->module), struct schema_fsmo_private_data);
+ ldb = ldb_module_get_ctx(ac->module);
+
+ if (!ares) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+ /* Only entries are interesting, and we handle the case of the parent seperatly */
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+
+ if (ldb_dn_compare(ares->message->dn, mc->aggregate_dn) != 0) {
+ return ldb_module_send_entry(ac->req, ares->message, ares->controls);
+ }
+
+ for (i=0; i < ARRAY_SIZE(generated_attrs); i++) {
+ if (ldb_attr_in_list(ac->req->op.search.attrs, generated_attrs[i].attr)) {
+ ret = generated_attrs[i].fn(ldb, ares->message, ac->schema);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ }
+
+ return ldb_module_send_entry(ac->req, ares->message, ares->controls);
+
+ case LDB_REPLY_REFERRAL:
+
+ return ldb_module_send_referral(ac->req, ares->referral);
+
+ case LDB_REPLY_DONE:
+
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* search */
+static int schema_fsmo_search(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ int i, ret;
+ struct schema_fsmo_search_data *search_context;
+ struct ldb_request *down_req;
+ struct dsdb_schema *schema = dsdb_get_schema(ldb);
+
+ if (!schema || !ldb_module_get_private(module)) {
+ /* If there is no schema, there is little we can do */
+ return ldb_next_request(module, req);
+ }
+ for (i=0; i < ARRAY_SIZE(generated_attrs); i++) {
+ if (ldb_attr_in_list(req->op.search.attrs, generated_attrs[i].attr)) {
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(generated_attrs)) {
+ /* No request for a generated attr found, nothing to
+ * see here, move along... */
+ return ldb_next_request(module, req);
+ }
+
+ search_context = talloc(req, struct schema_fsmo_search_data);
+ if (!search_context) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ search_context->module = module;
+ search_context->req = req;
+ search_context->schema = schema;
+
+ ret = ldb_build_search_req_ex(&down_req, ldb, search_context,
+ req->op.search.base,
+ req->op.search.scope,
+ req->op.search.tree,
+ req->op.search.attrs,
+ req->controls,
+ search_context, schema_fsmo_search_callback,
+ req);
+ if (ret != LDB_SUCCESS) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return ldb_next_request(module, down_req);
+}
+
+
+_PUBLIC_ const struct ldb_module_ops ldb_schema_fsmo_module_ops = {
+ .name = "schema_fsmo",
+ .init_context = schema_fsmo_init,
+ .add = schema_fsmo_add,
+ .extended = schema_fsmo_extended,
+ .search = schema_fsmo_search
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-27 03:51:27 +0000