// Copyright 2019 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 <fuzzer/FuzzedDataProvider.h>

#include <string>

#include "deflate.h"

#include "zopfli.h"

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

  ZopfliOptions options;

  ZopfliInitOptions(&options);

  FuzzedDataProvider stream(data, size);

  // From documentation: valid values for btype are 0, 1, or 2.

  const int btype = stream.PickValueInArray({0, 1, 2});

  // The final parameter is an int but it is used as a bool.

  const int is_final = stream.ConsumeIntegralInRange(0, 1);

  const std::string input = stream.ConsumeRemainingBytesAsString();

  unsigned char* out = nullptr;

  size_t outsize = 0;

  unsigned char bp = 0;  // Apparently must be zero.

  ZopfliDeflate(&options, btype, is_final,

                reinterpret_cast<const unsigned char*>(input.data()),

                input.size(), &bp, &out, &outsize);

  if (out != nullptr) {

    free(out);

  }

  return 0;

}