1 files changed, 54 insertions, 0 deletions
diff --git a/tests/fuzz_cdp.c b/tests/fuzz_cdp.c
new file mode 100644
index 0000000..e0fa569
--- /dev/null
+++ b/tests/fuzz_cdp.c
@@ -0,0 +1,54 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2023 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "../src/daemon/lldpd.h"
+
+#define kMinInputLength 5
+#define kMaxInputLength 2048
+
+/* Use this callback to avoid some logs */
+void donothing(int pri, const char *msg) {};
+
+extern int
+LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
+{
+	if (Size < kMinInputLength || Size > kMaxInputLength) {
+		return 1;
+	}
+
+	struct lldpd_chassis *nchassis = NULL;
+	struct lldpd_port *nport = NULL;
+	struct lldpd_hardware hardware;
+
+	log_register(donothing);
+
+	if (!cdpv2_guess((char *)Data, Size)) {
+		return 1;
+	}
+
+	cdp_decode(NULL, (char *)Data, Size, &hardware, &nchassis, &nport);
+
+	if (!nchassis || !nport) {
+		return 1;
+	}
+
+	lldpd_port_cleanup(nport, 1);
+	free(nport);
+	lldpd_chassis_cleanup(nchassis, 1);
+
+	return 0;
+}