diff --git a/.clusterfuzzlite/Dockerfile b/.clusterfuzzlite/Dockerfile new file mode 100644 index 0000000..b81e83e --- /dev/null +++ b/.clusterfuzzlite/Dockerfile @@ -0,0 +1,6 @@ +FROM gcr.io/oss-fuzz-base/base-builder +RUN apt-get update && apt-get install -y make autoconf automake libtool + +COPY . $SRC/frozen +COPY .clusterfuzzlite/build.sh $SRC/build.sh +WORKDIR $SRC/frozen diff --git a/.clusterfuzzlite/README.md b/.clusterfuzzlite/README.md new file mode 100644 index 0000000..0d3ef94 --- /dev/null +++ b/.clusterfuzzlite/README.md @@ -0,0 +1,19 @@ +# ClusterFuzzLite set up + +This folder contains a fuzzing set for [ClusterFuzzLite](https://google.github.io/clusterfuzzlite). + +## Reproduce locally + +To reproduce this set up the way ClusterFuzzLite does it (by way of [OSS-Fuzz](https://github.com/google/oss)) you can do: + +```sh +git clone https://github.com/google/oss-fuzz +git https://github.com/cesanta/frozen +cd frozen + +# Build the fuzzers in .clusterfuzzlite +python3 ../oss-fuzz/infra/helper.py build_fuzzers --external $PWD + +# Run the fuzzer for 180 seconds +python3 ../oss-fuzz/infra/helper.py run_fuzzer --external $PWD json_walk_fuzzer -- -max_total_time=180 +``` \ No newline at end of file diff --git a/.clusterfuzzlite/build.sh b/.clusterfuzzlite/build.sh new file mode 100644 index 0000000..8b6b071 --- /dev/null +++ b/.clusterfuzzlite/build.sh @@ -0,0 +1,16 @@ +#!/bin/bash -eu +# Supply build instructions +# Use the following environment variables to build the code +# $CXX: c++ compiler +# $CC: c compiler +# CFLAGS: compiler flags for C files +# CXXFLAGS: compiler flags for CPP files +# LIB_FUZZING_ENGINE: linker flag for fuzzing harnesses +$CC $CFLAGS -c frozen.c -o frozen.o + +# Copy all fuzzer executables to $OUT/ +$CC $CFLAGS $LIB_FUZZING_ENGINE \ + $SRC/frozen/.clusterfuzzlite/json_walk_fuzzer.c \ + -o $OUT/json_walk_fuzzer \ + frozen.o \ + -I$PWD diff --git a/.clusterfuzzlite/json_walk_fuzzer.c b/.clusterfuzzlite/json_walk_fuzzer.c new file mode 100644 index 0000000..6785713 --- /dev/null +++ b/.clusterfuzzlite/json_walk_fuzzer.c @@ -0,0 +1,9 @@ +#include +#include + +int +LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + json_walk((const char*)data, size, NULL, NULL); + return 0; +} diff --git a/.clusterfuzzlite/project.yaml b/.clusterfuzzlite/project.yaml new file mode 100644 index 0000000..b455aa3 --- /dev/null +++ b/.clusterfuzzlite/project.yaml @@ -0,0 +1 @@ +language: c diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml new file mode 100644 index 0000000..93de02a --- /dev/null +++ b/.github/workflows/cflite_pr.yml @@ -0,0 +1,30 @@ +name: ClusterFuzzLite PR fuzzing +on: + workflow_dispatch: + pull_request: + branches: [ master ] +permissions: read-all +jobs: + PR: + runs-on: ubuntu-latest + strategy: + fail-fast: false + matrix: + sanitizer: [address] + steps: + - name: Build Fuzzers (${{ matrix.sanitizer }}) + id: build + uses: google/clusterfuzzlite/actions/build_fuzzers@v1 + with: + sanitizer: ${{ matrix.sanitizer }} + language: c + bad-build-check: false + - name: Run Fuzzers (${{ matrix.sanitizer }}) + id: run + uses: google/clusterfuzzlite/actions/run_fuzzers@v1 + with: + github-token: ${{ secrets.GITHUB_TOKEN }} + fuzz-seconds: 100 + mode: 'code-change' + report-unreproducible-crashes: false + sanitizer: ${{ matrix.sanitizer }}