1 files changed, 31 insertions, 0 deletions
diff --git a/tests-fuzz/fuzz_dname_to_str.c b/tests-fuzz/fuzz_dname_to_str.c
new file mode 100644
index 0000000..3d091a2
--- /dev/null
+++ b/tests-fuzz/fuzz_dname_to_str.c
@@ -0,0 +1,31 @@
+/*  Copyright (C) 2019 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "libknot/dname.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	// Skip invalid dnames.
+	if (knot_dname_wire_check(data, data + size, NULL) <= 0) {
+		return 0;
+	}
+
+	// Transform the input.
+	knot_dname_txt_storage_t txt;
+	(void)knot_dname_to_str(txt, (const knot_dname_t *)data, sizeof(txt));
+
+	return 0;
+}