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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 <stddef.h>
#include <stdint.h>
#include <clocale>
#include <string>
#include "flatbuffers/idl.h"
#include "test_init.h"
static constexpr size_t kMinInputLength = 1;
static constexpr size_t kMaxInputLength = 16384;
static constexpr uint8_t flags_strict_json = 0x80;
static constexpr uint8_t flags_skip_unexpected_fields_in_json = 0x40;
static constexpr uint8_t flags_allow_non_utf8 = 0x20;
// Utility for test run.
OneTimeTestInit OneTimeTestInit::one_time_init_;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
// Reserve one byte for Parser flags and one byte for repetition counter.
if (size < 3) return 0;
const uint8_t flags = data[0];
(void)data[1]; // reserved
data += 2;
size -= 2; // bypass
const std::string original(reinterpret_cast<const char *>(data), size);
auto input = std::string(original.c_str()); // until '\0'
if (input.size() < kMinInputLength || input.size() > kMaxInputLength)
return 0;
flatbuffers::IDLOptions opts;
opts.strict_json = (flags & flags_strict_json);
opts.skip_unexpected_fields_in_json =
(flags & flags_skip_unexpected_fields_in_json);
opts.allow_non_utf8 = (flags & flags_allow_non_utf8);
flatbuffers::Parser parser(opts);
// Guarantee 0-termination in the input.
auto parse_input = input.c_str();
// Check Parser.
parser.Parse(parse_input);
// TODO:
// Need to add additional checks for inputs passed Parse(parse_input) successfully:
// 1. Serialization to bfbs.
// 2. Generation of a default object.
// 3. Verification of the object using reflection.
// 3. Printing to json.
return 0;
}
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