Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_jwt.py: 28%

1###### Coverage stub 

2import atexit 

3import coverage 

4cov = coverage.coverage(data_file='.coverage', cover_pylib=True) 

5cov.start() 

6# Register an exist handler that will print coverage 

7def exit_handler(): 

8 cov.stop() 

9 cov.save() 

10atexit.register(exit_handler) 

11####### End of coverage stub 

12#!/usr/bin/python3 

13# Copyright 2022 Google LLC 

14# 

15# Licensed under the Apache License, Version 2.0 (the "License"); 

16# you may not use this file except in compliance with the License. 

17# You may obtain a copy of the License at 

18# 

19# http://www.apache.org/licenses/LICENSE-2.0 

20# 

21# Unless required by applicable law or agreed to in writing, software 

22# distributed under the License is distributed on an "AS IS" BASIS, 

23# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

24# See the License for the specific language governing permissions and 

25# limitations under the License. 

26 

27import os 

28import sys 

29import atheris 

30 

31from google.auth import jwt 

32from google.auth import crypt 

33 

34bundle_dir = getattr(sys, '_MEIPASS', os.path.abspath(os.path.dirname(__file__))) 

35path_to_public_cert = os.path.abspath(os.path.join(bundle_dir, 'public_cert.pem')) 

36 

37if os.path.isfile(path_to_public_cert): 

38 with open(path_to_public_cert, "rb") as fh: 

39 PUBLIC_CERT_BYTES = fh.read() 

40else: 

41 raise Exception("Could not find public cert") 

42 

43@atheris.instrument_func 

44def test_token_decode(data): 

45 fdp = atheris.FuzzedDataProvider(data) 

46 try: 

47 jwt.decode(fdp.ConsumeString(200), certs=PUBLIC_CERT_BYTES) 

48 except ValueError: # ValueError is thrown if any failed verification checks 

49 pass 

50 

51@atheris.instrument_func 

52def TestOneInput(data): 

53 test_token_decode(data) 

54 

55 

56def main(): 

57 atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True) 

58 atheris.instrument_all() 

59 atheris.Fuzz() 

60 

61if __name__ == "__main__": 

62 main()