CIRCL
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PyCIRCLean
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Edit README.md 

* Mention that example files are not up to date with the new API changes
* Update example code for API changes
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Dan Puttick 2017-03-15 22:53:14 -04:00
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commit 1abfb432b1
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98
README.md
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@ -6,7 +6,7 @@
PyCIRCLean is the core Python code used by [CIRCLean](https://github.com/CIRCL/Circlean/), an open-source
USB key and document sanitizer created by [CIRCL](https://www.circl.lu/). This module has been separated from the
device-specific scripts and can be used for dedicated security applications to sanitize documents from hostile environments
to trusted environments. PyCIRCLean is currently Python 3.3+ only.
to trusted environments. PyCIRCLean is currently Python 3.3+ compatible.
# Installation
@ -23,10 +23,12 @@ pip install .
# How to use PyCIRCLean
PyCIRCLean is a simple Python library to handle file checking and sanitization.
PyCIRCLean is designed to be overloaded and extended to cover specific checking
PyCIRCLean is designed to be extended to cover specific checking
and sanitization workflows in different organizations such as industrial
environments or restricted/classified ICT environments. A series of practical examples utilizing PyCIRCLean can be found
in the [./examples](./examples) directory.
in the [./examples](./examples) directory. Note: for commits beyond version 2.2.0 these
examples are not guaranteed to work with the PyCIRCLean API. Please check [helpers.py](./kittengroomer/helpers.py) or
[filecheck.py](./bin/filecheck.py) to see the new API interface.
The following simple example using PyCIRCLean will only copy files with a .conf extension matching the 'text/plain' MIME
type. If any other file is found in the source directory, the files won't be copied to the destination directory.
@ -41,87 +43,69 @@ from kittengroomer import FileBase, KittenGroomerBase, main
# Extension
configfiles = {'.conf': 'text/plain'}
class Config:
configfiles = {'.conf': 'text/plain'}
class FileSpec(FileBase):
def __init__(self, src_path, dst_path):
''' Init file object, set the extension '''
"""Init file object, set the extension."""
super(FileSpec, self).__init__(src_path, dst_path)
self.valid_files = {}
a, self.extension = os.path.splitext(self.src_path)
self.mimetype = magic.from_file(self.src_path, mime=True).decode("utf-8")
# The initial version will only accept the file extensions/mimetypes listed here.
self.valid_files.update(Config.configfiles)
def check(self):
valid = True
expected_mime = self.valid_files.get(self.extension)
if expected_mime is None:
# Unexpected extension => disallowed
valid = False
compare_ext = 'Extension: {} - Expected: {}'.format(self.cur_file.extension, ', '.join(self.valid_files.keys()))
elif self.mimetype != expected_mime:
# Unexpected mimetype => disallowed
valid = False
compare_mime = 'Mime: {} - Expected: {}'.format(self.cur_file.mimetype, expected_mime)
self.add_log_details('valid', valid)
if valid:
self.cur_file.log_string = 'Extension: {} - MimeType: {}'.format(self.cur_file.extension, self.cur_file.mimetype)
else:
self.should_copy = False
if compare_ext is not None:
self.add_log_string(compare_ext)
else:
self.add_log_string(compare_mime)
if self.should_copy:
self.safe_copy()
self.write_log()
class KittenGroomerSpec(KittenGroomerBase):
def __init__(self, root_src=None, root_dst=None):
'''
Initialize the basics of the copy
'''
"""Initialize the basics of the copy."""
if root_src is None:
root_src = os.path.join(os.sep, 'media', 'src')
if root_dst is None:
root_dst = os.path.join(os.sep, 'media', 'dst')
super(KittenGroomerSpec, self).__init__(root_src, root_dst)
self.valid_files = {}
# The initial version will only accept the file extensions/mimetypes listed here.
self.valid_files.update(configfiles)
def _print_log(self):
'''
Print the logs related to the current file being processed
'''
tmp_log = self.log_name.fields(**self.cur_file.log_details)
if not self.cur_file.log_details.get('valid'):
tmp_log.warning(self.cur_file.log_string)
else:
tmp_log.debug(self.cur_file.log_string)
def processdir(self):
'''
Main function doing the processing
'''
"""Main function doing the processing."""
to_copy = []
error = []
for srcpath in self._list_all_files(self.src_root_dir):
valid = True
self.log_name.info('Processing {}', srcpath.replace(self.src_root_dir + '/', ''))
self.cur_file = FileSpec(srcpath, srcpath.replace(self.src_root_dir, self.dst_root_dir))
expected_mime = self.valid_files.get(self.cur_file.extension)
if expected_mime is None:
# Unexpected extension => disallowed
valid = False
compare_ext = 'Extension: {} - Expected: {}'.format(self.cur_file.extension, ', '.join(self.valid_files.keys()))
elif self.cur_file.mimetype != expected_mime:
# Unexpected mimetype => disallowed
valid = False
compare_mime = 'Mime: {} - Expected: {}'.format(self.cur_file.mimetype, expected_mime)
self.cur_file.add_log_details('valid', valid)
if valid:
to_copy.append(self.cur_file)
self.cur_file.log_string = 'Extension: {} - MimeType: {}'.format(self.cur_file.extension, self.cur_file.mimetype)
else:
error.append(self.cur_file)
if compare_ext is not None:
self.cur_file.log_string = compare_ext
else:
self.cur_file.log_string = compare_mime
if len(error) > 0:
for f in error + to_copy:
self.cur_file = f
self._print_log()
else:
for f in to_copy:
self.cur_file = f
self._safe_copy()
self._print_log()
dstpath = srcpath.replace(self.src_root_dir, self.dst_root_dir)
cur_file = FileSpec(srcpath, dstpath)
cur_file.check()
if __name__ == '__main__':
main(KittenGroomerSpec, ' Only copy some files, returns an error is anything else is found')
exit(0)
~~~
# How to contribute

2
setup.py
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@ -4,7 +4,7 @@ from setuptools import setup
setup(
name='kittengroomer',
version='2.1',
version='2.1.0',
author='Raphaël Vinot',
author_email='raphael.vinot@circl.lu',
maintainer='Raphaël Vinot',