xref: /freebsd/crypto/openssl/fuzz/cms.c (revision f126890ac5386406dadf7c4cfa9566cbb56537c5)
1 /*
2  * Copyright 2016 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  * Test CMS DER parsing.
13  */
14 
15 #include <openssl/bio.h>
16 #include <openssl/cms.h>
17 #include <openssl/err.h>
18 #include "fuzzer.h"
19 
20 int FuzzerInitialize(int *argc, char ***argv)
21 {
22     OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
23     ERR_clear_error();
24     CRYPTO_free_ex_index(0, -1);
25     return 1;
26 }
27 
28 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
29 {
30     CMS_ContentInfo *cms;
31     BIO *in;
32 
33     if (len == 0)
34         return 0;
35 
36     in = BIO_new(BIO_s_mem());
37     OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
38     cms = d2i_CMS_bio(in, NULL);
39     if (cms != NULL) {
40         BIO *out = BIO_new(BIO_s_null());
41 
42         i2d_CMS_bio(out, cms);
43         BIO_free(out);
44         CMS_ContentInfo_free(cms);
45     }
46 
47     BIO_free(in);
48     ERR_clear_error();
49 
50     return 0;
51 }
52 
53 void FuzzerCleanup(void)
54 {
55 }
56