diff --git a/projects/coveragepy/Dockerfile b/projects/coveragepy/Dockerfile new file mode 100644 index 000000000..6eb650488 --- /dev/null +++ b/projects/coveragepy/Dockerfile @@ -0,0 +1,21 @@ +# Copyright 2022 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 update && apt-get install -y make autoconf automake libtool +RUN git clone --depth 1 https://github.com/nedbat/coveragepy +WORKDIR coveragepy +COPY build.sh *.py $SRC/ diff --git a/projects/coveragepy/build.sh b/projects/coveragepy/build.sh new file mode 100755 index 000000000..1974eb7eb --- /dev/null +++ b/projects/coveragepy/build.sh @@ -0,0 +1,21 @@ +#!/bin/bash -eu +# Copyright 2022 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 . +for fuzzer in $(find $SRC -name 'fuzz_*.py'); do + compile_python_fuzzer $fuzzer +done diff --git a/projects/coveragepy/fuzz_parse.py b/projects/coveragepy/fuzz_parse.py new file mode 100644 index 000000000..97cbd58a1 --- /dev/null +++ b/projects/coveragepy/fuzz_parse.py @@ -0,0 +1,53 @@ +#!/usr/bin/python3 +# Copyright 2022 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 coverage.exceptions import NotPython +from coverage.parser import PythonParser + + +def TestOneInput(data): + """Fuzzer for PythonParser""" + fdp = atheris.FuzzedDataProvider(data) + + t = fdp.ConsumeUnicodeNoSurrogates(1024) + if not t: + return + + try: + p = PythonParser(text = t) + p.parse_source() + except (NotPython, MemoryError) as e2: + # Catch Memory error for stack overflows + # Catch NotPython issues raised by coveragepy + pass + except ValueError as e: + if "source code string cannot contain null bytes" in str(e): + # Not interesting + pass + else: + raise e + + +def main(): + atheris.instrument_all() + atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True) + atheris.Fuzz() + + +if __name__ == "__main__": + main() diff --git a/projects/coveragepy/project.yaml b/projects/coveragepy/project.yaml new file mode 100644 index 000000000..c95a3bb49 --- /dev/null +++ b/projects/coveragepy/project.yaml @@ -0,0 +1,12 @@ +homepage: "https://github.com/nedbat/coveragepy/" +language: python +primary_contact: "ned@nedbatchelder.com" +main_repo: "https://github.com/nedbat/coveragepy" +fuzzing_engines: +- libfuzzer +sanitizers: +- address +- undefined +vendor_ccs: +- david@adalogics.com +- adam@adalogics.com