# 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

import olefile

def TestOneInput(data):
    fuzz_olefile = "tmp_f.doc"
    with open(fuzz_olefile, "wb") as f:
        f.write(data)

    if olefile.isOleFile(fuzz_olefile):
        try:
            with olefile.OleFileIO(fuzz_olefile) as ole:
                pass
        except (olefile.olefile.OleFileError, IOError) as e:
            pass
    try:
        # Ensure the file gets closed, however the file should usually be closed
        # by olefile itself, so ignore FileNotFoundError if raised.
        os.remove(fuzz_olefile)
    except FileNotFoundError:
        pass


def main():
    atheris.instrument_all()
    atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
    atheris.Fuzz()


if __name__ == "__main__":
    main()