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54 lines (45 loc) · 1.92 KB
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// Copyright 2007-2019 The JsonCpp Authors
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
#include "fuzz.h"
#include <cstdint>
#include <json/config.h>
#include <json/json.h>
#include <memory>
#include <string>
namespace Json {
class Exception;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
Json::CharReaderBuilder builder;
if (size < sizeof(uint32_t)) {
return 0;
}
const uint32_t hash_settings = static_cast<uint32_t>(data[0]) |
(static_cast<uint32_t>(data[1]) << 8) |
(static_cast<uint32_t>(data[2]) << 16) |
(static_cast<uint32_t>(data[3]) << 24);
data += sizeof(uint32_t);
size -= sizeof(uint32_t);
builder.settings_["failIfExtra"] = hash_settings & (1 << 0);
builder.settings_["allowComments_"] = hash_settings & (1 << 1);
builder.settings_["strictRoot_"] = hash_settings & (1 << 2);
builder.settings_["allowDroppedNullPlaceholders_"] = hash_settings & (1 << 3);
builder.settings_["allowNumericKeys_"] = hash_settings & (1 << 4);
builder.settings_["allowSingleQuotes_"] = hash_settings & (1 << 5);
builder.settings_["failIfExtra_"] = hash_settings & (1 << 6);
builder.settings_["rejectDupKeys_"] = hash_settings & (1 << 7);
builder.settings_["allowSpecialFloats_"] = hash_settings & (1 << 8);
builder.settings_["collectComments"] = hash_settings & (1 << 9);
builder.settings_["allowTrailingCommas_"] = hash_settings & (1 << 10);
std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
Json::Value root;
const auto data_str = reinterpret_cast<const char*>(data);
try {
reader->parse(data_str, data_str + size, &root, nullptr);
} catch (Json::Exception const&) {
}
// Whether it succeeded or not doesn't matter.
return 0;
}