/*

 * Copyright(c) 2017 Tim Ruehsen

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#include <config.h>

#include <assert.h>   /* assert */

#include <stdlib.h>   /* malloc, free */

#include <string.h>   /* memcpy */

#include "idn2.h"

#include "fuzzer.h"

int

LLVMFuzzerTestOneInput (const uint8_t *data, size_t size)

{

  char *ulabel, *alabel;

  char *out;

  if (size > 1024)

    return 0;

  ulabel = (char *) malloc (size + 1);

  assert (ulabel != NULL);

  /* 0 terminate */

  memcpy (ulabel, data, size);

  ulabel[size] = 0;

  if (size == 0)

    {

    /*** test NULL input/output combinations ***/

      if (idn2_register_ul (NULL, NULL, &out, 0) == IDN2_OK)

  idn2_free (out);

      idn2_register_ul (ulabel, NULL, NULL, 0);

    }

  if (idn2_register_ul (ulabel, NULL, &out, 0) == IDN2_OK)

    idn2_free (out);

  free (ulabel);

  alabel = (char *) malloc (size + 4 + 1);

  assert (alabel != NULL);

  /* 0 terminate */

  memcpy (alabel, "xn--", 4);

  memcpy (alabel + 4, data, size);

  alabel[size] = 0;

  if (idn2_register_ul (NULL, alabel, &out, 0) == IDN2_OK)

    idn2_free (out);

  /*** test NULL input/output combinations ***/

  if (size == 0)

    idn2_register_ul (NULL, alabel, NULL, 0);

  free (alabel);

  return 0;

}