Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.10/site-packages/django/core/files/utils.py: 49%

1import os 

2import pathlib 

3 

4from django.core.exceptions import SuspiciousFileOperation 

5 

6 

7def validate_file_name(name, allow_relative_path=False): 

8 # Remove potentially dangerous names 

9 if os.path.basename(name) in {"", ".", ".."}: 

10 raise SuspiciousFileOperation("Could not derive file name from '%s'" % name) 

11 

12 if allow_relative_path: 

13 # Ensure that name can be treated as a pure posix path, i.e. Unix 

14 # style (with forward slashes). 

15 path = pathlib.PurePosixPath(str(name).replace("\\", "/")) 

16 if path.is_absolute() or ".." in path.parts: 

17 raise SuspiciousFileOperation( 

18 "Detected path traversal attempt in '%s'" % name 

19 ) 

20 elif name != os.path.basename(name): 

21 raise SuspiciousFileOperation("File name '%s' includes path elements" % name) 

22 

23 return name 

24 

25 

26class FileProxyMixin: 

27 """ 

28 A mixin class used to forward file methods to an underlying file 

29 object. The internal file object has to be called "file":: 

30 

31 class FileProxy(FileProxyMixin): 

32 def __init__(self, file): 

33 self.file = file 

34 """ 

35 

36 encoding = property(lambda self: self.file.encoding) 

37 fileno = property(lambda self: self.file.fileno) 

38 flush = property(lambda self: self.file.flush) 

39 isatty = property(lambda self: self.file.isatty) 

40 newlines = property(lambda self: self.file.newlines) 

41 read = property(lambda self: self.file.read) 

42 readinto = property(lambda self: self.file.readinto) 

43 readline = property(lambda self: self.file.readline) 

44 readlines = property(lambda self: self.file.readlines) 

45 seek = property(lambda self: self.file.seek) 

46 tell = property(lambda self: self.file.tell) 

47 truncate = property(lambda self: self.file.truncate) 

48 write = property(lambda self: self.file.write) 

49 writelines = property(lambda self: self.file.writelines) 

50 

51 @property 

52 def closed(self): 

53 return not self.file or self.file.closed 

54 

55 def readable(self): 

56 if self.closed: 

57 return False 

58 if hasattr(self.file, "readable"): 

59 return self.file.readable() 

60 return True 

61 

62 def writable(self): 

63 if self.closed: 

64 return False 

65 if hasattr(self.file, "writable"): 

66 return self.file.writable() 

67 return "w" in getattr(self.file, "mode", "") 

68 

69 def seekable(self): 

70 if self.closed: 

71 return False 

72 if hasattr(self.file, "seekable"): 

73 return self.file.seekable() 

74 return True 

75 

76 def __iter__(self): 

77 return iter(self.file)