oss-fuzz/projects/smart_open/fuzz_zip.py

52 lines
1.6 KiB
Python

#!/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 atheris
import sys
import os
with atheris.instrument_imports():
from smart_open import open
import zipfile
import tempfile
def TestInput(data):
if len(data) < 10:
return
fdp = atheris.FuzzedDataProvider(data)
tmp = tempfile.NamedTemporaryFile(prefix=fdp.ConsumeString(10), suffix=fdp.ConsumeString(4), delete=False)
filestr = fdp.ConsumeString(100)
with open(tmp.name, 'wb') as f:
with zipfile.ZipFile(f, 'w') as zip:
zip.writestr(fdp.ConsumeString(10), filestr)
zip.writestr(fdp.ConsumeString(10), filestr)
with open(tmp.name, 'rb') as f:
with zipfile.ZipFile(f) as zip:
for info in zip.infolist():
file_bytes = zip.read(info.filename)
assert filestr == file_bytes.decode('utf-8')
os.unlink(tmp.name)
def main():
atheris.Setup(sys.argv, TestInput, enable_python_coverage=True)
atheris.instrument_all()
atheris.Fuzz()
if __name__ == "__main__":
main()