Add fuzzing!

Reviewed-by: Emilia Käsper <emilia@openssl.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/fuzz/asn1parse.c b/fuzz/asn1parse.c
new file mode 100644
index 0000000000..63104fb7d0
--- /dev/null
+++ b/fuzz/asn1parse.c
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
+ */
+
+/*
+ * Fuzz the parser used for dumping ASN.1 using "openssl asn1parse".
+ */
+
+#include <stdio.h>
+#include <openssl/asn1.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include "fuzzer.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
+    static BIO *bio_out;
+
+    if (bio_out == NULL)
+        bio_out = BIO_new_file("/dev/null", "w");
+
+    (void)ASN1_parse_dump(bio_out, buf, len, 0, 0);
+    return 0;
+}