oss-fuzz/projects/python-graphviz/fuzz_graph.py

45 lines
1.3 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.
"""Create a random graph and pass it through the whole rendering process."""
import sys
import atheris
import graphviz
def TestOneInput(data):
fdp = atheris.FuzzedDataProvider(data)
g = graphviz.Graph('G', filename='/tmp/process.gv', engine='sfdp')
for i in range(fdp.ConsumeIntInRange(1, 8196)):
g.edge(fdp.ConsumeUnicodeNoSurrogates(24),
fdp.ConsumeUnicodeNoSurrogates(24))
try:
g.view()
except (
NotImplementedError,
graphviz.backend.execute.CalledProcessError,
graphviz.backend.execute.ExecutableNotFound,
):
pass
def main():
atheris.instrument_all()
atheris.Setup(sys.argv, TestOneInput)
atheris.Fuzz()
if __name__ == "__main__":
main()