/*

 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")

 *

 * SPDX-License-Identifier: MPL-2.0

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, you can obtain one at https://mozilla.org/MPL/2.0/.

 *

 * See the COPYRIGHT file distributed with this work for additional

 * information regarding copyright ownership.

 */

#include <stdbool.h>

#include <stdlib.h>

#include <isc/buffer.h>

#include <isc/mem.h>

#include <isc/util.h>

#include <dns/callbacks.h>

#include <dns/db.h>

#include <dns/master.h>

#include <dns/types.h>

#include "fuzz.h"

bool debug = false;

int

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

  UNUSED(argc);

  UNUSED(argv);

  return 0;

}

int

LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

  isc_buffer_t buf;

  isc_result_t result;

  isc_mem_t *mctx = NULL;

  isc_buffer_constinit(&buf, data, size);

  isc_buffer_add(&buf, size);

  isc_buffer_setactive(&buf, size);

  dns_rdatacallbacks_t callbacks;

  dns_rdatacallbacks_init(&callbacks);

  dns_db_t *db = NULL;

  isc_mem_create("fuzz", &mctx);

  result = dns_db_create(mctx, ZONEDB_DEFAULT, dns_rootname,

             dns_dbtype_zone, dns_rdataclass_in, 0, NULL,

             &db);

  if (result != ISC_R_SUCCESS) {

    return 0;

  }

  result = dns_db_beginload(db, &callbacks);

  if (result != ISC_R_SUCCESS) {

    goto end;

  }

  result = dns_master_loadbuffer(&buf, &db->origin, &db->origin,

               db->rdclass, DNS_MASTER_ZONE, &callbacks,

               db->mctx);

  if (debug) {

    fprintf(stderr, "loadbuffer: %s\n", isc_result_totext(result));

  }

  result = dns_db_endload(db, &callbacks);

  if (debug) {

    fprintf(stderr, "endload: %s\n", isc_result_totext(result));

  }

end:

  dns_db_detach(&db);

  isc_mem_detach(&mctx);

  return 0;

}