67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
import logging
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from functools import wraps
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from glob import glob
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from fnmatch import fnmatchcase
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from os.path import dirname, isdir, isfile, realpath, isabs
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LOG = logging.getLogger(__name__)
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def _with_is_allowed(func):
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@wraps(func)
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def wrapper(self, *args, **kwargs):
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if self.is_allowed(args[0]):
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return func(self, *args, **kwargs)
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raise ValueError('Forbidden path.')
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return wrapper
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class FileManager: # pylint: disable=too-many-instance-attributes
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def __init__(self, patterns):
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self.patterns = patterns
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@property
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def files(self):
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return list(set(
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path
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for pattern in self.patterns
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for path in glob(pattern, recursive=True)
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if isfile(path) and self.is_allowed(path)
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))
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@property
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def parents(self):
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return list(set(
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self._find_directory(pattern)
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for pattern in self.patterns
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))
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@staticmethod
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def _find_directory(pattern):
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while pattern and not isdir(pattern):
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pattern = dirname(pattern)
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return pattern
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def is_allowed(self, filepath):
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return any(
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fnmatchcase(realpath(filepath), pattern)
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for pattern in self.patterns
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)
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def find_file(self, filename):
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if not isabs(filename):
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for filepath in self.files:
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if filepath.endswith(filename):
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return filepath
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return filename
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@_with_is_allowed
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def read_file(self, filepath): # pylint: disable=no-self-use
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with open(filepath, 'rb', buffering=0) as ifile:
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return ifile.read().decode(errors='surrogateescape')
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@_with_is_allowed
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def write_file(self, filepath, contents): # pylint: disable=no-self-use
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with open(filepath, 'wb', buffering=0) as ofile:
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ofile.write(contents.encode())
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