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authorMatthias Dieter Wallnöfer <mdw@samba.org>2011-10-12 20:33:53 +0200
committerMatthias Dieter Wallnöfer <mdw@samba.org>2011-10-27 18:52:29 +0200
commit68b3770c45507070af02c110dd540322c61a65f4 (patch)
treece20490eada13f2b3a6aa51ffe4a807142630b62 /source4/dsdb/samdb/ldb_modules/objectclass.c
parent730257f4c0ef0df4c30150d956dbf319c3d5aedc (diff)
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s4:objectclass LDB module - forbid to add unrelated objectclasses
E.g. unsatisfied abstract objectclasses, additional top-most structural classes Reviewed-by: abartlet
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/objectclass.c')
-rw-r--r--source4/dsdb/samdb/ldb_modules/objectclass.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/objectclass.c b/source4/dsdb/samdb/ldb_modules/objectclass.c
index 6e087b9897..cf40f35ae7 100644
--- a/source4/dsdb/samdb/ldb_modules/objectclass.c
+++ b/source4/dsdb/samdb/ldb_modules/objectclass.c
@@ -219,6 +219,60 @@ static int objectclass_sort(struct ldb_module *module,
return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
+/*
+ * This checks if we have unrelated object classes in our entry's "objectClass"
+ * attribute. That means "unsatisfied" abstract classes (no concrete subclass)
+ * or two or more disjunct structural ones.
+ * If one of these conditions are true, blame.
+ */
+static int check_unrelated_objectclasses(struct ldb_module *module,
+ const struct dsdb_schema *schema,
+ const struct dsdb_class *struct_objectclass,
+ struct ldb_message_element *objectclass_element)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ unsigned int i;
+ bool found;
+
+ if (schema == NULL) {
+ return LDB_SUCCESS;
+ }
+
+ for (i = 0; i < objectclass_element->num_values; i++) {
+ const struct dsdb_class *tmp_class = dsdb_class_by_lDAPDisplayName_ldb_val(schema,
+ &objectclass_element->values[i]);
+ const struct dsdb_class *tmp_class2 = struct_objectclass;
+
+ /* Pointer comparison can be used due to the same schema str. */
+ if (tmp_class == NULL ||
+ tmp_class == struct_objectclass ||
+ tmp_class->objectClassCategory > 2 ||
+ ldb_attr_cmp(tmp_class->lDAPDisplayName, "top") == 0) {
+ continue;
+ }
+
+ found = false;
+ while (!found &&
+ ldb_attr_cmp(tmp_class2->lDAPDisplayName, "top") != 0) {
+ tmp_class2 = dsdb_class_by_lDAPDisplayName(schema,
+ tmp_class2->subClassOf);
+ if (tmp_class2 == tmp_class) {
+ found = true;
+ }
+ }
+ if (found) {
+ continue;
+ }
+
+ ldb_asprintf_errstring(ldb,
+ "objectclass: the objectclass '%s' seems to be unrelated to the entry!",
+ tmp_class->lDAPDisplayName);
+ return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ }
+
+ return LDB_SUCCESS;
+}
+
static int get_search_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_context *ldb;
@@ -588,6 +642,13 @@ static int objectclass_do_add(struct oc_context *ac)
return LDB_ERR_UNWILLING_TO_PERFORM;
}
+ ret = check_unrelated_objectclasses(ac->module, ac->schema,
+ objectclass,
+ objectclass_element);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
rdn_name = ldb_dn_get_rdn_name(msg->dn);
if (rdn_name == NULL) {
return ldb_operr(ldb);