/*

 * Copyright 2022 Uber Technologies, Inc.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *         http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/** @file

 * @brief Fuzzer program for internal functions in coordijk.c

 */

#include "aflHarness.h"

#include "algos.h"

#include "h3api.h"

#include "utility.h"

typedef struct {

    CoordIJK ijk;

} inputArgs;

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

    if (size < sizeof(inputArgs)) {

        return 0;

    }

    const inputArgs *args = (const inputArgs *)data;

    // These functions require that input be non-negative

    if (args->ijk.i >= 0 && args->ijk.j >= 0 && args->ijk.k >= 0) {

        CoordIJK ijkCopy1 = args->ijk;

        _upAp7Checked(&ijkCopy1);

        CoordIJK ijkCopy2 = args->ijk;

        _upAp7rChecked(&ijkCopy2);

    }

    // This function needs a guard check to be safe and that guard

    // check assumes k = 0.

    CoordIJK ijkCopy3 = args->ijk;

    ijkCopy3.k = 0;

    if (!_ijkNormalizeCouldOverflow(&ijkCopy3)) {

        _ijkNormalize(&ijkCopy3);

    }

    return 0;

}

AFL_HARNESS_MAIN(sizeof(inputArgs));