Coverage for /var/srv/projects/api.amasfac.comuna18.com/tmp/venv/lib/python3.9/site-packages/django/utils/_os.py: 38%

1import os 

2import tempfile 

3from os.path import abspath, dirname, join, normcase, sep 

4from pathlib import Path 

5 

6from django.core.exceptions import SuspiciousFileOperation 

7 

8 

9def safe_join(base, *paths): 

10 """ 

11 Join one or more path components to the base path component intelligently. 

12 Return a normalized, absolute version of the final path. 

13 

14 Raise ValueError if the final path isn't located inside of the base path 

15 component. 

16 """ 

17 final_path = abspath(join(base, *paths)) 

18 base_path = abspath(base) 

19 # Ensure final_path starts with base_path (using normcase to ensure we 

20 # don't false-negative on case insensitive operating systems like Windows), 

21 # further, one of the following conditions must be true: 

22 # a) The next character is the path separator (to prevent conditions like 

23 # safe_join("/dir", "/../d")) 

24 # b) The final path must be the same as the base path. 

25 # c) The base path must be the most root path (meaning either "/" or "C:\\") 

26 if ( 26 ↛ 31line 26 didn't jump to line 31

27 not normcase(final_path).startswith(normcase(base_path + sep)) 

28 and normcase(final_path) != normcase(base_path) 

29 and dirname(normcase(base_path)) != normcase(base_path) 

30 ): 

31 raise SuspiciousFileOperation( 

32 "The joined path ({}) is located outside of the base path " 

33 "component ({})".format(final_path, base_path) 

34 ) 

35 return final_path 

36 

37 

38def symlinks_supported(): 

39 """ 

40 Return whether or not creating symlinks are supported in the host platform 

41 and/or if they are allowed to be created (e.g. on Windows it requires admin 

42 permissions). 

43 """ 

44 with tempfile.TemporaryDirectory() as temp_dir: 

45 original_path = os.path.join(temp_dir, "original") 

46 symlink_path = os.path.join(temp_dir, "symlink") 

47 os.makedirs(original_path) 

48 try: 

49 os.symlink(original_path, symlink_path) 

50 supported = True 

51 except (OSError, NotImplementedError): 

52 supported = False 

53 return supported 

54 

55 

56def to_path(value): 

57 """Convert value to a pathlib.Path instance, if not already a Path.""" 

58 if isinstance(value, Path): 

59 return value 

60 elif not isinstance(value, str): 

61 raise TypeError("Invalid path type: %s" % type(value).__name__) 

62 return Path(value)