/*

 * Copyright (C) 2026 Arthur SC Chan

 *

 * Copyright (C) secunet Security Networks AG

 *

 * 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 2 of the License, or (at your

 * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.

 *

 * 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.

 */

#include <library.h>

#include <utils/debug.h>

#include <radius_message.h>

int LLVMFuzzerInitialize(int *argc, char ***argv)

{

  dbg_default_set_level(-1);

  library_init(NULL, "fuzz_radius");

  if (!lib->plugins->load(lib->plugins, PLUGINS))

  {

    return 1;

  }

  return 0;

}

int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len)

{

  enumerator_t *enumerator;

  radius_message_t *msg;

  hasher_t *hasher;

  signer_t *signer;

  chunk_t data, attr_data;

  int type, count, vendor;

  if (len < 20)

  {

    return 0;

  }

  data = chunk_create((u_char*)buf, len);

  msg = radius_message_parse(data);

  if (msg)

  {

    enumerator = msg->create_enumerator(msg);

    count = 0;

    while (count++ < 10000 &&

         enumerator->enumerate(enumerator, &type, &attr_data));

    enumerator->destroy(enumerator);

    enumerator = msg->create_vendor_enumerator(msg);

    count = 0;

    while (count++ < 10000 &&

         enumerator->enumerate(enumerator, &vendor, &type, &attr_data));

    enumerator->destroy(enumerator);

    hasher = lib->crypto->create_hasher(lib->crypto, HASH_MD5);

    signer = lib->crypto->create_signer(lib->crypto, AUTH_HMAC_MD5_128);

    if (!hasher || !signer)

    {

      return 1;

    }

    msg->verify(msg, NULL, chunk_empty, hasher, signer);

    hasher->destroy(hasher);

    signer->destroy(signer);

    msg->destroy(msg);

  }

  return 0;

}