79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
|
/*
|
||
|
|
__ _____ _____ _____
|
||
|
|
__| | __| | | | JSON for Modern C++ (fuzz test support)
|
||
|
|
| | |__ | | | | | | version 3.7.3
|
||
|
|
|_____|_____|_____|_|___| https://github.com/nlohmann/json
|
||
|
|
|
||
|
|
This file implements a parser test suitable for fuzz testing. Given a byte
|
||
|
|
array data, it performs the following steps:
|
||
|
|
|
||
|
|
- j1 = parse(data)
|
||
|
|
- s1 = serialize(j1)
|
||
|
|
- j2 = parse(s1)
|
||
|
|
- s2 = serialize(j2)
|
||
|
|
- assert(s1 == s2)
|
||
|
|
|
||
|
|
The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
|
||
|
|
drivers.
|
||
|
|
|
||
|
|
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
#include <deque>
|
||
|
|
#include <sstream>
|
||
|
|
#include <nlohmann/json.hpp>
|
||
|
|
|
||
|
|
using json = nlohmann::json;
|
||
|
|
|
||
|
|
// see http://llvm.org/docs/LibFuzzer.html
|
||
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
|
||
|
|
{
|
||
|
|
std::vector<uint8_t> vec1(data, data+size);
|
||
|
|
std::deque<uint8_t> deque1(data, data+size);
|
||
|
|
|
||
|
|
json j_vector(vec1);
|
||
|
|
json j_deque(deque1);
|
||
|
|
|
||
|
|
assert(j_vector == j_deque);
|
||
|
|
|
||
|
|
// try
|
||
|
|
// {
|
||
|
|
// // step 1: parse input
|
||
|
|
// json j1 = json::parse(data, data + size);
|
||
|
|
|
||
|
|
// try
|
||
|
|
// {
|
||
|
|
// // step 2: round trip
|
||
|
|
|
||
|
|
// // first serialization
|
||
|
|
// std::string s1 = j1.dump();
|
||
|
|
|
||
|
|
// // parse serialization
|
||
|
|
// json j2 = json::parse(s1);
|
||
|
|
|
||
|
|
// // second serialization
|
||
|
|
// std::string s2 = j2.dump();
|
||
|
|
|
||
|
|
// // serializations must match
|
||
|
|
// assert(s1 == s2);
|
||
|
|
// }
|
||
|
|
// catch (const json::parse_error&)
|
||
|
|
// {
|
||
|
|
// // parsing a JSON serialization must not fail
|
||
|
|
// assert(false);
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
// catch (const json::parse_error&)
|
||
|
|
// {
|
||
|
|
// // parse errors are ok, because input may be random bytes
|
||
|
|
// }
|
||
|
|
// catch (const json::out_of_range&)
|
||
|
|
// {
|
||
|
|
// // out of range errors may happen if provided sizes are excessive
|
||
|
|
// }
|
||
|
|
|
||
|
|
// return 0 - non-zero return values are reserved for future use
|
||
|
|
return 0;
|
||
|
|
}
|