From 1c3dbecd6a8e7c1533789cc72fa49e2c69164cb3 Mon Sep 17 00:00:00 2001 From: DavidKorczynski Date: Wed, 4 Jan 2023 11:02:20 +0000 Subject: [PATCH] cffi: initial integration (#9349) Signed-off-by: David Korczynski Signed-off-by: David Korczynski --- projects/cffi/Dockerfile | 19 ++++++++++++++ projects/cffi/build.sh | 22 ++++++++++++++++ projects/cffi/fuzz_recompiler.py | 45 ++++++++++++++++++++++++++++++++ projects/cffi/project.yaml | 10 +++++++ 4 files changed, 96 insertions(+) create mode 100644 projects/cffi/Dockerfile create mode 100644 projects/cffi/build.sh create mode 100644 projects/cffi/fuzz_recompiler.py create mode 100644 projects/cffi/project.yaml diff --git a/projects/cffi/Dockerfile b/projects/cffi/Dockerfile new file mode 100644 index 000000000..b06c01038 --- /dev/null +++ b/projects/cffi/Dockerfile @@ -0,0 +1,19 @@ +#!/usr/bin/python3 +# Copyright 2023 Google LLC +# +# 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. +FROM gcr.io/oss-fuzz-base/base-builder-python +RUN apt-get install -y libffi-dev mercurial +RUN hg clone https://foss.heptapod.net/pypy/cffi cffi +COPY *.sh *py $SRC/ +WORKDIR $SRC/cffi diff --git a/projects/cffi/build.sh b/projects/cffi/build.sh new file mode 100644 index 000000000..0f26fbc3c --- /dev/null +++ b/projects/cffi/build.sh @@ -0,0 +1,22 @@ +#!/bin/bash -eu +# Copyright 2023 Google LLC +# +# 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. +# +################################################################################ +pip3 install . + +# Build fuzzers in $OUT. +for fuzzer in $(find $SRC -name 'fuzz_*.py'); do + compile_python_fuzzer $fuzzer +done diff --git a/projects/cffi/fuzz_recompiler.py b/projects/cffi/fuzz_recompiler.py new file mode 100644 index 000000000..9f6338fe9 --- /dev/null +++ b/projects/cffi/fuzz_recompiler.py @@ -0,0 +1,45 @@ +#!/usr/bin/python3 +# Copyright 2023 Google LLC +# +# 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. +import sys +import atheris + +from cffi import FFI, VerificationError, FFIError, CDefError +from cffi import recompiler + + +def TestOneInput(data): + fdp = atheris.FuzzedDataProvider(data) + ffi = FFI() + try: + ffi.cdef(fdp.ConsumeUnicodeNoSurrogates(sys.maxsize)) + recomp = recompiler.Recompiler(ffi, 'fuzzmod') + + # Call functions on the recompiler object. + recomp.collect_type_table() + recomp.collect_step_tables() + except (VerificationError, FFIError, CDefError) as e: + pass + except AssertionError: + pass + + +def main(): + atheris.instrument_all() + atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True) + atheris.Fuzz() + + +if __name__ == "__main__": + main() diff --git a/projects/cffi/project.yaml b/projects/cffi/project.yaml new file mode 100644 index 000000000..d46e22aaa --- /dev/null +++ b/projects/cffi/project.yaml @@ -0,0 +1,10 @@ +fuzzing_engines: +- libfuzzer +homepage: https://foss.heptapod.net/pypy/cffi +language: python +main_repo: https://foss.heptapod.net/pypy/cffi +sanitizers: +- address +- undefined +vendor_ccs: +- david@adalogics.com