1 files changed, 78 insertions, 0 deletions
diff --git a/fuzz/dns_master_load.c b/fuzz/dns_master_load.c
new file mode 100644
index 0000000..016cc88
--- /dev/null
+++ b/fuzz/dns_master_load.c
@@ -0,0 +1,78 @@
+/*
+ * 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.
+ */
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <isc/buffer.h>
+#include <isc/mem.h>
+#include <isc/util.h>
+
+#include <dns/callbacks.h>
+#include <dns/db.h>
+#include <dns/master.h>
+#include <dns/types.h>
+
+#include "fuzz.h"
+
+bool debug = false;
+
+int
+LLVMFuzzerInitialize(int *argc, char ***argv) {
+	UNUSED(argc);
+	UNUSED(argv);
+	return (0);
+}
+
+int
+LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+	isc_buffer_t buf;
+	isc_result_t result;
+	isc_mem_t *mctx = NULL;
+
+	isc_buffer_constinit(&buf, data, size);
+	isc_buffer_add(&buf, size);
+	isc_buffer_setactive(&buf, size);
+
+	dns_rdatacallbacks_t callbacks;
+	dns_rdatacallbacks_init(&callbacks);
+	dns_db_t *db = NULL;
+
+	isc_mem_create(&mctx);
+	result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone,
+			       dns_rdataclass_in, 0, NULL, &db);
+	if (result != ISC_R_SUCCESS) {
+		return 0;
+	}
+
+	result = dns_db_beginload(db, &callbacks);
+	if (result != ISC_R_SUCCESS) {
+		goto end;
+	}
+
+	result = dns_master_loadbuffer(&buf, &db->origin, &db->origin,
+				       db->rdclass, DNS_MASTER_ZONE, &callbacks,
+				       db->mctx);
+	if (debug) {
+		fprintf(stderr, "loadbuffer: %s\n", isc_result_totext(result));
+	}
+	result = dns_db_endload(db, &callbacks);
+	if (debug) {
+		fprintf(stderr, "endload: %s\n", isc_result_totext(result));
+	}
+
+end:
+	dns_db_detach(&db);
+	isc_mem_destroy(&mctx);
+	return (0);
+}