mirror of https://github.com/google/oss-fuzz.git
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
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#!/usr/bin/python3
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# Copyright 2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import atheris
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import sys
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with atheris.instrument_imports():
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from google.auth import jwt
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from google.auth import crypt
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if os.path.isfile("privatekey.pem"):
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with open("privatekey.pem", "rb") as fh:
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PRIVATE_KEY_BYTES = fh.read()
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else:
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raise Exception("Could not find private key")
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if os.path.isfile("public_cert.pem"):
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with open("public_cert.pem", "rb") as fh:
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PUBLIC_CERT_BYTES = fh.read()
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else:
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raise Exception("Could not find public cert")
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def test_roundtrip_unverified(data):
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fdp = atheris.FuzzedDataProvider(data)
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raw_data = fdp.ConsumeString(200)
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signer = crypt.RSASigner.from_string(PRIVATE_KEY_BYTES, "1")
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encoded = jwt.encode(signer, raw_data)
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_, decoded_data, _, _ = jwt._unverified_decode(encoded)
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assert(raw_data == decoded_data)
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def test_token_decode(data):
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fdp = atheris.FuzzedDataProvider(data)
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try:
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jwt.decode(fdp.ConsumeString(200), certs=PUBLIC_CERT_BYTES)
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except ValueError: # ValueError is thrown if any failed verification checks
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pass
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def TestOneInput(data):
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test_roundtrip_unverified(data)
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test_token_decode(data)
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def main():
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atheris.instrument_all()
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atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
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atheris.Fuzz()
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if __name__ == "__main__":
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main()
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