mirror of
https://github.com/nlohmann/json
synced 2024-12-11 20:20:06 +00:00
b026591e9e
Since #329, NaN and inf numbers do not yield an exception, but are stored internally and are dumped as “null”. This commit adjusts the fuzz testers to deal with this special case.
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (fuzz test support)
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| | |__ | | | | | | version 2.1.1
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|_____|_____|_____|_|___| https://github.com/nlohmann/json
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This file implements a parser test suitable for fuzz testing. Given a byte
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array data, it performs the following steps:
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- j1 = from_cbor(data)
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- vec = to_cbor(j1)
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- j2 = from_cbor(vec)
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- assert(j1 == j2)
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The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
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drivers.
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Licensed under the MIT License <http://opensource.org/licenses/MIT>.
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*/
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#include <iostream>
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#include <sstream>
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#include <json.hpp>
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using json = nlohmann::json;
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// see http://llvm.org/docs/LibFuzzer.html
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
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{
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try
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{
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// step 1: parse input
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std::vector<uint8_t> vec1(data, data + size);
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json j1 = json::from_cbor(vec1);
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try
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{
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// step 2: round trip
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std::vector<uint8_t> vec2 = json::to_cbor(j1);
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// parse serialization
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json j2 = json::from_cbor(vec2);
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// serializations must match
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assert(json::to_cbor(j2) == vec2);
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}
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catch (const json::parse_error&)
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{
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// parsing a CBOR serialization must not fail
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assert(false);
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}
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}
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catch (const json::parse_error&)
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{
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// parse errors are ok, because input may be random bytes
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}
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catch (const json::type_error&)
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{
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// type errors can occur during parsing, too
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}
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// return 0 - non-zero return values are reserved for future use
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return 0;
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}
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