// Copyright 2024 Google 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.

//

////////////////////////////////////////////////////////////////////////////////

#include <cstdint>

#include <cstdio>

#include <cstdlib>

#include <cstring>

#include <string_view>

#include "./nalloc.h"

#include "src/webp/decode.h"

#include "tests/fuzzer/fuzz_utils.h"

namespace {

void DecodeWebP(std::string_view arbitrary_bytes,

                const fuzz_utils::WebPDecoderOptionsCpp& decoder_options) {

  WebPDecoderConfig decoder_config;

  if (!WebPInitDecoderConfig(&decoder_config)) {

    fprintf(stderr, "WebPInitDecoderConfig failed.\n");

    std::abort();

  }

  nalloc_init(nullptr);

  nalloc_start(reinterpret_cast<const uint8_t*>(arbitrary_bytes.data()),

               arbitrary_bytes.size());

  std::memcpy(&decoder_config.options, &decoder_options,

              sizeof(decoder_options));

  const VP8StatusCode status =

      WebPDecode(reinterpret_cast<const uint8_t*>(arbitrary_bytes.data()),

                 arbitrary_bytes.size(), &decoder_config);

  WebPFreeDecBuffer(&decoder_config.output);

  // The decoding may fail (because the fuzzed input can be anything) but not

  // for these reasons.

  if (status == VP8_STATUS_SUSPENDED || status == VP8_STATUS_USER_ABORT) {

    std::abort();

  }

  nalloc_end();

}

FUZZ_TEST(WebPSuite, DecodeWebP)

    .WithDomains(fuzztest::String().WithMaxSize(fuzz_utils::kMaxWebPFileSize +

                                                1),

                 fuzz_utils::ArbitraryValidWebPDecoderOptions());

}  // namespace