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#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#blacklist_url = 'ftp://ftp.univ-tlse1.fr/pub/reseau/cache/squidguard_contrib/blacklists.tar.gz'
blacklist_url = 'http://lnx01.mybll.net/~cpo/blacklists.tar.gz'
global_data_dir = '/config/url-filtering'
sg_dir = f'{global_data_dir}/squidguard'
blacklist_dir = f'{sg_dir}/db'
archive_dir = f'{sg_dir}/archive'
target_file = '/tmp/blacklists.tar.gz'
#
# XXX: this is a proof of concept for downloading a file via Python
#
import os
import shutil
import argparse
import urllib.request
import tarfile
from tqdm import tqdm
from vyos.util import chown
from vyos.util import chmod
parser = argparse.ArgumentParser()
parser.add_argument("--update", help="Update SquidGuard blacklist",
action="store_true")
args = parser.parse_args()
class DownloadProgressBar(tqdm):
def update_to(self, b=1, bsize=1, tsize=None):
if tsize is not None:
self.total = tsize
self.update(b * bsize - self.n)
def download_url(url, output_path):
with DownloadProgressBar(unit='B', unit_scale=True,
miniters=1, desc=url.split('/')[-1]) as t:
urllib.request.urlretrieve(url, filename=output_path, reporthook=t.update_to)
def squidguard_is_blacklist_installed():
return os.path.exists(blacklist_dir)
def install_blacklist():
download_url(blacklist_url, target_file)
print('Uncompressing blacklist...')
tar = tarfile.open(target_file, "r:gz")
tar.extractall(path='/tmp')
tar.close()
if not os.path.exists(sg_dir):
os.makedirs(sg_dir, exist_ok=True)
if os.path.exists(archive_dir):
print('Removing old archive...')
shutil.rmtree(archive_dir)
if os.path.exists(blacklist_dir):
print('Archiving old blacklist...')
shutil.move(blacklist_dir, archive_dir)
shutil.move('/tmp/blacklists', blacklist_dir)
chown(blacklist_dir, 'proxy', 'proxy')
chmod(blacklist_dir, 0o755)
if args.update:
if not squidguard_is_blacklist_installed():
print('Warning: No url-filtering blacklist installed')
input('Would you like to download a default blacklist? [confirm]')
else:
input('Would you like to re-download the blacklist? [confirm]')
install_blacklist()
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