oss-fuzz/projects/abseil-py/fuzz_argparse.py

76 lines
1.9 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 sys
import enum
import atheris
from absl import flags
from absl.flags import _exceptions
from absl.flags import argparse_flags
class FuzzEnum(enum.Enum):
VAL1 = object()
VAL2 = object()
def TestOneInput(data):
"""Hits the logic in https://github.com/abseil/abseil-py/tree/main/absl/flags"""
fdp = atheris.FuzzedDataProvider(data)
def rs(size):
return fdp.ConsumeUnicodeNoSurrogates(size)
fuzz_flag_values = flags.FlagValues()
try:
flags.DEFINE_string(rs(256), None, rs(256), flag_values = fuzz_flag_values)
except _exceptions.Error:
pass
try:
flags.DEFINE_float(rs(256), 0.0, rs(256), flag_values = fuzz_flag_values)
except _exceptions.Error:
pass
try:
flags.DEFINE_enum_class(rs(256), None, FuzzEnum, rs(256), flag_values = fuzz_flag_values)
except _exceptions.Error:
pass
try:
flags.DEFINE_integer(rs(256), rs(256), rs(256), flag_values = fuzz_flag_values)
except _exceptions.Error:
pass
command_line_args = []
for idx in range(fdp.ConsumeIntInRange(1, 20)):
command_line_args.append(rs(256))
# Parse it all
try:
fuzz_flag_values(command_line_args)
except _exceptions.Error:
pass
def main():
atheris.instrument_all()
atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
atheris.Fuzz()
if __name__ == "__main__":
main()