Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_zipp.py: 55%

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 

31import zipp 

32import zipfile 

33import io 

34 

35 

36def gen_path(fdp): 

37 """Generate a string with maximum 4 instances of /""" 

38 s1 = fdp.ConsumeUnicodeNoSurrogates(15) 

39 while s1.count("/") > 4: 

40 # Replace the first occurrence of / 

41 s1 = s1.replace("/", "a", 1) 

42 return s1 

43 

44 

45def build_fixture(fdp): 

46 """Generate a random zip structure""" 

47 data = io.BytesIO() 

48 zf = zipfile.ZipFile(data, "w") 

49 number_of_entries = fdp.ConsumeIntInRange(2, 10) 

50 for i in range(number_of_entries): 

51 zf.writestr(gen_path(fdp), fdp.ConsumeBytes(20)) 

52 zf.filename = "fuzzGen.zip" 

53 return zf 

54 

55 

56def TestOneInput(data): 

57 fdp = atheris.FuzzedDataProvider(data) 

58 try: 

59 zf = build_fixture(fdp) 

60 except: 

61 # On any issue we return 

62 return 

63 

64 root = zipp.Path(zf) 

65 for elem in root.iterdir(): 

66 # perform simple operations on the elem 

67 elem.is_dir() 

68 elem.is_file() 

69 

70 

71def main(): 

72 atheris.instrument_all() 

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

74 atheris.Fuzz() 

75 

76 

77if __name__ == "__main__": 

78 main()