94 lines
3.0 KiB
Python
94 lines
3.0 KiB
Python
from typing import Iterable
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from glob import glob
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from fnmatch import fnmatchcase
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from os.path import basename, isfile, join, relpath, exists, isdir, realpath
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class FileManager: # pylint: disable=too-many-instance-attributes
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def __init__(self, working_directory, allowed_directories, selected_file=None, exclude=None):
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self._exclude, self.exclude = [], exclude
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self._allowed_directories, self.allowed_directories = None, allowed_directories
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self._workdir, self.workdir = None, working_directory
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self._filename, self.filename = None, selected_file or self.files[0]
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@property
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def exclude(self):
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return self._exclude
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@exclude.setter
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def exclude(self, exclude):
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if exclude is None:
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return
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if not isinstance(exclude, Iterable):
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raise TypeError('Exclude must be Iterable!')
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self._exclude = exclude
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@property
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def workdir(self):
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return self._workdir
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@workdir.setter
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def workdir(self, directory):
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if not exists(directory) or not isdir(directory):
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raise EnvironmentError(f'"{directory}" is not a directory!')
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if not self._is_in_allowed_dir(directory):
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raise EnvironmentError(f'Directory "{directory}" is not allowed!')
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self._workdir = directory
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@property
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def allowed_directories(self):
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return self._allowed_directories
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@allowed_directories.setter
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def allowed_directories(self, directories):
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self._allowed_directories = [realpath(directory) for directory in directories]
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@property
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def filename(self):
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return self._filename
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@filename.setter
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def filename(self, filename):
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if filename not in self.files:
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raise EnvironmentError('No such file in workdir!')
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self._filename = filename
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@property
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def files(self):
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return [
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self._relpath(file)
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for file in glob(join(self._workdir, '**/*'), recursive=True)
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if isfile(file)
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and self._is_in_allowed_dir(file)
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and not self._is_blacklisted(file)
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]
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@property
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def file_contents(self):
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with open(self._filepath(self.filename), 'rb', buffering=0) as ifile:
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return ifile.read().decode(errors='surrogateescape')
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@file_contents.setter
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def file_contents(self, value):
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with open(self._filepath(self.filename), 'wb', buffering=0) as ofile:
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ofile.write(value.encode())
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def _is_in_allowed_dir(self, path):
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return any(
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realpath(path).startswith(allowed_dir)
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for allowed_dir in self.allowed_directories
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)
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def _is_blacklisted(self, file):
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return any(
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fnmatchcase(file, blacklisted) or
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fnmatchcase(basename(file), blacklisted)
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for blacklisted in self.exclude
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)
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def _filepath(self, filename):
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return join(self._workdir, filename)
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def _relpath(self, filename):
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return relpath(self._filepath(filename), start=self._workdir)
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