🚧 cleanup

pull/410/head
Niels Lohmann 2016-12-22 12:08:36 +01:00
parent a084e90f39
commit 33be4e7f1f
3 changed files with 80 additions and 1 deletions

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@ -50,10 +50,18 @@ fuzz_testing:
rm -fr fuzz-testing
mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
$(MAKE) parse_afl_fuzzer -C test CXX=afl-clang++
mv test/fuzzer parse_afl_fuzzer
mv test/parse_afl_fuzzer fuzz-testing/fuzzer
find test/data/json_tests -size -5k -name *json | xargs -I{} cp "{}" fuzz-testing/testcases
@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
fuzz_testing_cbor:
rm -fr fuzz-testing
mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
$(MAKE) parse_cbor_fuzzer -C test CXX=afl-clang++
mv test/parse_cbor_fuzzer fuzz-testing/fuzzer
find test/data -size -5k -name *cbor | xargs -I{} cp "{}" fuzz-testing/testcases
@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
##########################################################################
# static analyzer

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@ -86,3 +86,6 @@ check: $(TESTCASES)
parse_afl_fuzzer:
$(CXX) $(CXXFLAGS) $(CPPFLAGS) src/fuzzer-driver_afl.cpp src/fuzzer-parse_json.cpp -o $@
parse_cbor_fuzzer:
$(CXX) $(CXXFLAGS) $(CPPFLAGS) src/fuzzer-driver_afl.cpp src/fuzzer-parse_cbor.cpp -o $@

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@ -0,0 +1,68 @@
/*
__ _____ _____ _____
__| | __| | | | JSON for Modern C++ (fuzz test support)
| | |__ | | | | | | version 2.0.9
|_____|_____|_____|_|___| 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 = from_cbor(data)
- vec = to_cbor(j1)
- j2 = from_cbor(vec)
- assert(j1 == j2)
The provided function `LLVMFuzzerTestOneInput` can be used in different fuzzer
drivers.
Licensed under the MIT License <http://opensource.org/licenses/MIT>.
*/
#include <iostream>
#include <sstream>
#include <json.hpp>
using json = nlohmann::json;
// see http://llvm.org/docs/LibFuzzer.html
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
try
{
// step 1: parse input
std::vector<uint8_t> vec1(data, data + size);
json j1 = json::from_cbor(vec1);
try
{
// step 2: round trip
std::vector<uint8_t> vec2 = json::to_cbor(j1);
// parse serialization
json j2 = json::from_cbor(vec2);
// deserializations must match
assert(j1 == j2);
}
catch (const std::invalid_argument&)
{
// parsing a CBOR serialization must not fail
assert(false);
}
}
catch (const std::invalid_argument&)
{
// parse errors are ok, because input may be random bytes
}
catch (const std::out_of_range&)
{
// parse errors are ok, because input may be random bytes
}
catch (const std::domain_error&)
{
// parse errors are ok, because input may be random bytes
}
// return 0 - non-zero return values are reserved for future use
return 0;
}