fuzz/ct.c

   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  * Fuzz the SCT parser.
  13  */
  14
  15 #include <stdio.h>
  16 #include <openssl/ct.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     CRYPTO_free_ex_index(0, -1);
  24     ERR_get_state();
  25     return 1;
  26 }
  27
  28 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
  29 {
  30     const uint8_t **pp = &buf;
  31     unsigned char *der = NULL;
  32     STACK_OF(SCT) *scts = d2i_SCT_LIST(NULL, pp, len);
  33     if (scts != NULL) {
  34         BIO *bio = BIO_new(BIO_s_null());
  35         SCT_LIST_print(scts, bio, 4, "\n", NULL);
  36         BIO_free(bio);
  37
  38         if (i2d_SCT_LIST(scts, &der)) {
  39             /* Silence unused result warning */
  40         }
  41         OPENSSL_free(der);
  42
  43         SCT_LIST_free(scts);
  44     }
  45     ERR_clear_error();
  46     return 0;
  47 }
  48
  49 void FuzzerCleanup(void)
  50 {
  51 }