Repackage KBA data (each file is decrypted, decompressed and recompressed with gzip to make it easier to handle)

decompress_and_recompress.py

"""
We have a bunch of files in the form of social.*.xz.gpg.save
These need to be moved to gzip format.
"""

import argparse
import os


def decrypt(filename):
	if filename and not filename.endswith('.gpg.save'):
		return None

	outfile = filename.replace('.gpg.save', '')
	os.system('gpg -o %(outfile)s -d %(filename)s #2> /dev/null' % { 'outfile' : outfile, 'filename' : filename })
	return outfile

def recompress(filename):
	if filename and not filename.endswith('.xz'):
		return None

	outfile = filename.replace('.xz', '.gz')
	os.system('/usr/bin/xz -d --stdout %(filename)s | gzip > %(outfile)s' % { 'filename' : filename, 'outfile' : outfile })
	os.system('rm %(filename)s' % { 'filename' : filename })
	return outfile

if __name__ == '__main__':
	def parse_cmdline_args():
		parser = argparse.ArgumentParser()

		parser.add_argument('files_list', metavar = 'files-list', help = 'list of files we need to decrypt and recompress')

		return parser.parse_args()

	parsed = parse_cmdline_args()

	with open(parsed.files_list, 'r') as files_list_handle:
		for new_line in files_list_handle:
			filename = new_line.strip()
			print recompress(decrypt(filename))