// 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 <cstdint>

#include <string>

#include "fuzzer/FuzzedDataProvider.h"

#include "fuzz_common.h"

#include "fuzz_js_format.h"

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

  FuzzedDataProvider fdp(data, size);

  const size_t len0 = fdp.ConsumeIntegralInRange<size_t>(0, 4096);

  const std::string priv = fdp.ConsumeRandomLengthString(len0);

  const std::string pub = fdp.ConsumeRemainingBytesAsString();

  static constexpr std::string_view kTemplate = R"(

require('crypto');

var privateKey = crypto.createPrivateKey({ key: {0}, format: 'pem' });

var publicKey  = crypto.createPublicKey ({ key: {1}, format: 'pem' });

try {

  crypto.diffieHellman({ privateKey, publicKey });

} catch (e) {}

)";

  const std::string js =

      FormatJs(kTemplate, ToSingleQuotedJsLiteral(priv), ToSingleQuotedJsLiteral(pub));

  fuzz::IsolateScope iso;

  if (!iso.ok()) return 0;

  fuzz::RunEnvString(iso.isolate(), js.c_str());

  return 0;

}