1 /*
2 * Copyright 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 "fuzzer.h"
12 #include <openssl/err.h>
13 #include <openssl/pkcs7.h>
14 #include <openssl/x509.h>
15 #include <stdio.h>
16
FuzzerInitialize(int * argc,char *** argv)17 int FuzzerInitialize(int *argc, char ***argv)
18 {
19 return 1;
20 }
21
FuzzerTestOneInput(const uint8_t * buf,size_t len)22 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
23 {
24 BIO *b = BIO_new_mem_buf(buf, len);
25 PKCS7 *p7 = SMIME_read_PKCS7(b, NULL);
26
27 if (p7 != NULL) {
28 STACK_OF(PKCS7_SIGNER_INFO) *p7si = PKCS7_get_signer_info(p7);
29 int i;
30
31 for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(p7si); i++) {
32 STACK_OF(X509_ALGOR) *algs;
33
34 PKCS7_cert_from_signer_info(p7,
35 sk_PKCS7_SIGNER_INFO_value(p7si, i));
36 algs = PKCS7_get_smimecap(sk_PKCS7_SIGNER_INFO_value(p7si, i));
37 sk_X509_ALGOR_pop_free(algs, X509_ALGOR_free);
38 }
39 PKCS7_free(p7);
40 }
41
42 BIO_free(b);
43 ERR_clear_error();
44 return 0;
45 }
46
FuzzerCleanup(void)47 void FuzzerCleanup(void)
48 {
49 }
50
