/********************************************************************************

 * Copyright 2025 Google LLC

 *

 * 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.

 *

 *******************************************************************************/

#include <stddef.h>

#include <stdint.h>

#include <string.h>

#include "zlib.h"

static Bytef buffer[256 * 1024] = { 0 };

// Entry point for LibFuzzer.

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

  uLong basesz = size ? (--size, *data++) : 8;

  uLong multiplier0 = size ? (--size, *data++) : 1;

  uLong multiplier1 = size ? (--size, *data++) : 1;

  uLongf buffer_length = static_cast<uLongf>(basesz * multiplier0 * multiplier1);

  uLong buf_size = static_cast<uLong>(size);

  // Ignore return code.

  uncompress2(buffer, &buffer_length, data, &buf_size);

  return 0;

}