gajim3/gajim/common/cert_store.py

90 lines
2.7 KiB
Python

# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
import logging
from gi.repository import GLib
from gi.repository import Gio
from gajim.common import configpaths
from gajim.common.helpers import get_random_string
from gajim.common.helpers import write_file_async
log = logging.getLogger('gajim.c.cert_store')
class CertificateStore:
def __init__(self):
self._path = configpaths.get('CERT_STORE')
self._certs = []
self._load_certificates()
def _get_random_path(self):
filename = get_random_string()
path = self._path / filename
if path.exists():
return self._get_random_path()
return path
def _load_certificates(self):
for path in self._path.iterdir():
if path.is_dir():
continue
try:
cert = Gio.TlsCertificate.new_from_file(str(path))
except GLib.Error as error:
log.warning('Can\'t load certificate: %s, %s', path, error)
continue
log.info('Loaded: %s', path.stem)
self._certs.append(cert)
log.info('%s Certificates loaded', len(self._certs))
def get_certificates(self):
return list(self._certs)
def add_certificate(self, certificate):
log.info('Add certificate to trust store')
self._certs.append(certificate)
pem = certificate.props.certificate_pem
path = self._get_random_path()
write_file_async(path,
pem.encode(),
self._on_certificate_write_finished,
path)
def verify(self, certificate, tls_errors):
if Gio.TlsCertificateFlags.UNKNOWN_CA in tls_errors:
for trusted_certificate in self._certs:
if trusted_certificate.is_same(certificate):
tls_errors.remove(Gio.TlsCertificateFlags.UNKNOWN_CA)
break
if not tls_errors:
return True
return False
@staticmethod
def _on_certificate_write_finished(data, error, path):
if data is None:
log.error('Can\'t store certificate: %s', error)
return
log.info('Certificate stored: %s', path)