diff options
Diffstat (limited to 'fuzzer/effcee_fuzz.cc')
-rw-r--r-- | fuzzer/effcee_fuzz.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/fuzzer/effcee_fuzz.cc b/fuzzer/effcee_fuzz.cc new file mode 100644 index 0000000..6ffe274 --- /dev/null +++ b/fuzzer/effcee_fuzz.cc @@ -0,0 +1,49 @@ +// Copyright 2019 The Effcee Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include <cstdint> +#include <cstdio> + +#include "FuzzedDataProvider.h" +#include "effcee/effcee.h" + +// Consumes standard input as a fuzzer input, breaks it apart into text +// and a check, then runs a basic match. +int main(int argc, char* argv[]) { + std::vector<uint8_t> input; + // Read standard input into a buffer. + { + if (FILE* fp = freopen(nullptr, "rb", stdin)) { + uint8_t chunk[1024]; + while (size_t len = fread(chunk, sizeof(uint8_t), sizeof(chunk), fp)) { + input.insert(input.end(), chunk, chunk + len); + } + if (ftell(fp) == -1L) { + if (ferror(fp)) { + fprintf(stderr, "error: error reading standard input"); + } + return 1; + } + } else { + fprintf(stderr, "error: couldn't reopen stdin for binary reading"); + } + } + + // This is very basic, but can find bugs. + FuzzedDataProvider stream(input.data(), input.size()); + std::string text = stream.ConsumeRandomLengthString(input.size()); + std::string checks = stream.ConsumeRemainingBytesAsString(); + effcee::Match(text, checks); + return 0; +} |