fuzz/read_pem.cc

/* Copyright (c) 2016, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/pem.h>


extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
  char *name, *header;
  uint8_t *pem_data;
  long pem_len;

  BIO *bio = BIO_new_mem_buf(buf, len);

  if (PEM_read_bio(bio, &name, &header, &pem_data, &pem_len) == 1) {
    OPENSSL_free(name);
    OPENSSL_free(header);
    OPENSSL_free(pem_data);
  }

  BIO_free(bio);

  ERR_clear_error();
  return 0;
}