Coverage for /pythoncovmergedfiles/medio/medio/src/acme2certifier/fuzz/csr_fuzzer.py: 45%

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 2026 grindsa 

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"""Fuzz CSR load and SAN extraction helpers.""" 

27 

28import logging 

29import sys 

30 

31import atheris 

32 

33with atheris.instrument_imports(): 

34 from acme2certifier.acme_srv.helpers.csr import ( 

35 csr_bound_names_get, 

36 csr_load, 

37 csr_san_get, 

38 ) 

39 

40_LOGGER = logging.getLogger("fuzz") 

41_LOGGER.addHandler(logging.NullHandler()) 

42_LOGGER.setLevel(logging.CRITICAL) 

43 

44 

45def TestOneInput(data: bytes) -> None: 

46 """Fuzz csr_load and related SAN helpers.""" 

47 fdp = atheris.FuzzedDataProvider(data) 

48 csr = fdp.ConsumeUnicodeNoSurrogates(fdp.remaining_bytes()) 

49 try: 

50 csr_load(_LOGGER, csr) 

51 except Exception: 

52 pass 

53 try: 

54 csr_san_get(_LOGGER, csr) 

55 except Exception: 

56 pass 

57 try: 

58 csr_bound_names_get(_LOGGER, csr) 

59 except Exception: 

60 pass 

61 

62 

63def main() -> None: 

64 """Entrypoint for Atheris / OSS-Fuzz.""" 

65 atheris.Setup(sys.argv, TestOneInput) 

66 atheris.Fuzz() 

67 

68 

69if __name__ == "__main__": 

70 main()