1 files changed, 135 insertions, 0 deletions
diff --git a/lib/dns/dbiterator.c b/lib/dns/dbiterator.c
new file mode 100644
index 0000000..39d9471
--- /dev/null
+++ b/lib/dns/dbiterator.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <stdbool.h>
+
+#include <isc/util.h>
+
+#include <dns/dbiterator.h>
+#include <dns/name.h>
+
+void
+dns_dbiterator_destroy(dns_dbiterator_t **iteratorp) {
+	/*
+	 * Destroy '*iteratorp'.
+	 */
+
+	REQUIRE(iteratorp != NULL);
+	REQUIRE(DNS_DBITERATOR_VALID(*iteratorp));
+
+	(*iteratorp)->methods->destroy(iteratorp);
+
+	ENSURE(*iteratorp == NULL);
+}
+
+isc_result_t
+dns_dbiterator_first(dns_dbiterator_t *iterator) {
+	/*
+	 * Move the node cursor to the first node in the database (if any).
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->first(iterator));
+}
+
+isc_result_t
+dns_dbiterator_last(dns_dbiterator_t *iterator) {
+	/*
+	 * Move the node cursor to the first node in the database (if any).
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->last(iterator));
+}
+
+isc_result_t
+dns_dbiterator_seek(dns_dbiterator_t *iterator, const dns_name_t *name) {
+	/*
+	 * Move the node cursor to the node with name 'name'.
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->seek(iterator, name));
+}
+
+isc_result_t
+dns_dbiterator_prev(dns_dbiterator_t *iterator) {
+	/*
+	 * Move the node cursor to the previous node in the database (if any).
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->prev(iterator));
+}
+
+isc_result_t
+dns_dbiterator_next(dns_dbiterator_t *iterator) {
+	/*
+	 * Move the node cursor to the next node in the database (if any).
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->next(iterator));
+}
+
+isc_result_t
+dns_dbiterator_current(dns_dbiterator_t *iterator, dns_dbnode_t **nodep,
+		       dns_name_t *name) {
+	/*
+	 * Return the current node.
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+	REQUIRE(nodep != NULL && *nodep == NULL);
+	REQUIRE(name == NULL || dns_name_hasbuffer(name));
+
+	return (iterator->methods->current(iterator, nodep, name));
+}
+
+isc_result_t
+dns_dbiterator_pause(dns_dbiterator_t *iterator) {
+	/*
+	 * Pause iteration.
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	return (iterator->methods->pause(iterator));
+}
+
+isc_result_t
+dns_dbiterator_origin(dns_dbiterator_t *iterator, dns_name_t *name) {
+	/*
+	 * Return the origin to which returned node names are relative.
+	 */
+
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+	REQUIRE(iterator->relative_names);
+	REQUIRE(dns_name_hasbuffer(name));
+
+	return (iterator->methods->origin(iterator, name));
+}
+
+void
+dns_dbiterator_setcleanmode(dns_dbiterator_t *iterator, bool mode) {
+	REQUIRE(DNS_DBITERATOR_VALID(iterator));
+
+	iterator->cleaning = mode;
+}