1/*
2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.openssl.org/source/license.html
8 * or in the file LICENSE in the source distribution.
9 */
10
11/*
12 * Fuzz the parser used for dumping ASN.1 using "openssl asn1parse".
13 */
14
15#include <stdio.h>
16#include <openssl/asn1.h>
17#include <openssl/x509.h>
18#include <openssl/x509v3.h>
19#include <openssl/err.h>
20#include "fuzzer.h"
21
22static BIO *bio_out;
23
24int FuzzerInitialize(int *argc, char ***argv)
25{
26    bio_out = BIO_new(BIO_s_null()); /* output will be ignored */
27    if (bio_out == NULL)
28        return 0;
29    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
30    ERR_clear_error();
31    CRYPTO_free_ex_index(0, -1);
32    return 1;
33}
34
35int FuzzerTestOneInput(const uint8_t *buf, size_t len)
36{
37    (void)ASN1_parse_dump(bio_out, buf, len, 0, 0);
38    ERR_clear_error();
39    return 0;
40}
41
42void FuzzerCleanup(void)
43{
44    BIO_free(bio_out);
45}
46