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- // Copyright 2015 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "base/json/json_reader.h"
- #include "base/json/json_writer.h"
- #include "base/values.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- namespace base {
- // Entry point for LibFuzzer.
- extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- if (size < 2)
- return 0;
- // Create a copy of input buffer, as otherwise we don't catch
- // overflow that touches the last byte (which is used in options).
- std::unique_ptr<char[]> input(new char[size - 1]);
- memcpy(input.get(), data, size - 1);
- StringPiece input_string(input.get(), size - 1);
- const int options = data[size - 1];
- auto json_val =
- JSONReader::ReadAndReturnValueWithError(input_string, options);
- if (json_val.has_value()) {
- // Check that the value can be serialized and deserialized back to an
- // equivalent |Value|.
- const Value& value = *json_val;
- std::string serialized;
- CHECK(JSONWriter::Write(value, &serialized));
- absl::optional<Value> deserialized =
- JSONReader::Read(StringPiece(serialized));
- CHECK(deserialized);
- CHECK_EQ(value, deserialized.value());
- }
- return 0;
- }
- } // namespace base
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