Home | History | Annotate | Line # | Download | only in fuzz 
      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 
     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 
     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 
     57 void FuzzerCleanup(void)
     58 {
     59 }
     60