find_encrypted_zipfiles.py

#!/usr/bin/env python

import os
import sys
import fnmatch
import logging
import zipfile

logging.basicConfig(
    stream=sys.stdout,
    level=logging.INFO,
    format='%(levelname)-8s %(message)s')

def main():
    '''main entrypoint'''
    if len(sys.argv) != 2:
        sys.stderr.writelines('Usage: {} <directory>\n'.format(sys.argv[0]))
        sys.exit(1)
    check_dir = sys.argv[1]
    logging.info('Checking %s for encrypted zip files', check_dir)
    for path, subdirs, files in os.walk(check_dir):
        for name in fnmatch.filter(files, '*.zip'):
            archive_name = os.path.join(path, name)
            zf = zipfile.ZipFile(archive_name)
            for zinfo in zf.infolist():
                is_encrypted = zinfo.flag_bits & 0x1
                if is_encrypted:
                    logging.warning('%s has encrypted contents!', archive_name)
                    break


if __name__ == "__main__":
    main()