1 /*
2 * Copyright 2022-2023 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 #include <openssl/pem.h>
12 #include <openssl/err.h>
13 #include "fuzzer.h"
14
FuzzerInitialize(int * argc,char *** argv)15 int FuzzerInitialize(int *argc, char ***argv)
16 {
17 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
18 ERR_clear_error();
19 CRYPTO_free_ex_index(0, -1);
20 return 1;
21 }
22
FuzzerTestOneInput(const uint8_t * buf,size_t len)23 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
24 {
25 BIO *in;
26 char *name = NULL, *header = NULL;
27 unsigned char *data = NULL;
28 long outlen;
29
30 if (len <= 1)
31 return 0;
32
33 in = BIO_new(BIO_s_mem());
34 OPENSSL_assert((size_t)BIO_write(in, buf + 1, len - 1) == len - 1);
35 if (PEM_read_bio_ex(in, &name, &header, &data, &outlen, buf[0]) == 1) {
36 /* Try to read all the data we get to see if allocated properly. */
37 BIO_write(in, name, strlen(name));
38 BIO_write(in, header, strlen(header));
39 BIO_write(in, data, outlen);
40 }
41 if (buf[0] & PEM_FLAG_SECURE) {
42 OPENSSL_secure_free(name);
43 OPENSSL_secure_free(header);
44 OPENSSL_secure_free(data);
45 } else {
46 OPENSSL_free(name);
47 OPENSSL_free(header);
48 OPENSSL_free(data);
49 }
50
51 BIO_free(in);
52 ERR_clear_error();
53
54 return 0;
55 }
56
FuzzerCleanup(void)57 void FuzzerCleanup(void)
58 {
59 }
60
