/*

 * Copyright 2021 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 h3ToString and stringToH3

 */

#include "aflHarness.h"

#include "h3api.h"

#include "utility.h"

#define STRING_LENGTH 32

typedef struct {

    H3Index index;

    char str[STRING_LENGTH];

} inputArgs;

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

    if (size < sizeof(inputArgs)) {

        return 0;

    }

    inputArgs args;

    // Copy the input data array since we need to modify it on the next line

    // to ensure it is zero terminated. (We are not interested in non-zero

    // terminated bugs since that fails the contract.)

    memcpy(&args, data, sizeof(inputArgs));

    args.str[STRING_LENGTH - 1] = 0;

    char str[STRING_LENGTH];

    H3_EXPORT(h3ToString)(args.index, str, STRING_LENGTH);

    H3Index index;

    H3_EXPORT(stringToH3)(args.str, &index);

    return 0;

}

AFL_HARNESS_MAIN(sizeof(inputArgs));