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-rw-r--r--lib/ldb/common/ldb_match.c13
-rw-r--r--lib/ldb/include/ldb_module.h2
2 files changed, 14 insertions, 1 deletions
diff --git a/lib/ldb/common/ldb_match.c b/lib/ldb/common/ldb_match.c
index c23e80478a..5eee02dea3 100644
--- a/lib/ldb/common/ldb_match.c
+++ b/lib/ldb/common/ldb_match.c
@@ -380,6 +380,16 @@ static int ldb_comparator_bitmask(const char *oid, const struct ldb_val *v1, con
return LDB_SUCCESS;
}
+/*
+ always return false
+*/
+static int ldb_comparator_false(const char *oid, const struct ldb_val *v1, const struct ldb_val *v2,
+ bool *matched)
+{
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
/*
extended match, handles things like bitops
@@ -395,7 +405,8 @@ static int ldb_match_extended(struct ldb_context *ldb,
int (*comparator)(const char *, const struct ldb_val *, const struct ldb_val *, bool *);
} rules[] = {
{ LDB_OID_COMPARATOR_AND, ldb_comparator_bitmask},
- { LDB_OID_COMPARATOR_OR, ldb_comparator_bitmask}
+ { LDB_OID_COMPARATOR_OR, ldb_comparator_bitmask},
+ { SAMBA_LDAP_MATCH_ALWAYS_FALSE, ldb_comparator_false}
};
int (*comp)(const char *,const struct ldb_val *, const struct ldb_val *, bool *) = NULL;
struct ldb_message_element *el;
diff --git a/lib/ldb/include/ldb_module.h b/lib/ldb/include/ldb_module.h
index fecf0c7ede..2acd8f364b 100644
--- a/lib/ldb/include/ldb_module.h
+++ b/lib/ldb/include/ldb_module.h
@@ -52,6 +52,8 @@ struct ldb_module;
/* force single value checking on this attribute */
#define LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK 0x80
+/* an extended match rule that always fails to match */
+#define SAMBA_LDAP_MATCH_ALWAYS_FALSE "1.3.6.1.4.1.7165.4.5.1"
/*
these function pointers define the operations that a ldb module can intercept