oss-fuzz/projects/ipykernel/fuzz_unpack_roundtrip.py

53 lines
1.4 KiB
Python

#!/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
import ipykernel
from ipykernel.serialize import unpack_apply_message, pack_apply_message
def ConsumeRandomLengthBufferList(fdp):
"""Creates a list of buffers of various lengths"""
buffers = []
max_range = fdp.ConsumeIntInRange(3, 50)
for _ in range(3, max_range):
buffers.append(fdp.ConsumeBytes(fdp.ConsumeIntInRange(0, 200)))
return buffers
def TestOneInput(data):
if len(data) < 48:
return
fdp = atheris.FuzzedDataProvider(data)
try:
buffers = ConsumeRandomLengthBufferList(fdp)
f, args, kwargs = unpack_apply_message(buffers)
except Exception:
return
# Anything unpackable, should be packable.
pack_apply_message(f, args, kwargs)
def main():
atheris.instrument_all()
atheris.Setup(sys.argv, TestOneInput)
atheris.Fuzz()
if __name__ == "__main__":
main()