diff options
Diffstat (limited to 'src/leap/bitmask/crypto')
-rw-r--r-- | src/leap/bitmask/crypto/certs.py | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/leap/bitmask/crypto/certs.py b/src/leap/bitmask/crypto/certs.py new file mode 100644 index 00000000..244decfd --- /dev/null +++ b/src/leap/bitmask/crypto/certs.py @@ -0,0 +1,80 @@ +# -*- coding: utf-8 -*- +# certs.py +# Copyright (C) 2013 LEAP +# +# This program 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, either version 3 of the License, or +# (at your option) any later version. +# +# 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/>. +""" +Utilities for dealing with client certs +""" +import logging +import os + +from leap.bitmask.crypto.srpauth import SRPAuth +from leap.bitmask.util.constants import REQUEST_TIMEOUT +from leap.common.files import check_and_fix_urw_only +from leap.common.files import mkdir_p + +from leap.common import certs as leap_certs + +logger = logging.getLogger(__name__) + + +def download_client_cert(provider_config, path, session): + """ + Downloads the client certificate for each service. + + :param provider_config: instance of a ProviderConfig + :type provider_config: ProviderConfig + :param path: the path to download the cert to. + :type path: str + :param session: a fetcher.session instance. For the moment we only + support requests.sessions + :type session: requests.sessions.Session + """ + # TODO we should implement the @with_srp_auth decorator + # again. + srp_auth = SRPAuth(provider_config) + session_id = srp_auth.get_session_id() + cookies = None + if session_id: + cookies = {"_session_id": session_id} + cert_uri = "%s/%s/cert" % ( + provider_config.get_api_uri(), + provider_config.get_api_version()) + logger.debug('getting cert from uri: %s' % cert_uri) + + res = session.get(cert_uri, + verify=provider_config + .get_ca_cert_path(), + cookies=cookies, + timeout=REQUEST_TIMEOUT) + res.raise_for_status() + client_cert = res.content + + if not leap_certs.is_valid_pemfile(client_cert): + # XXX raise more specific exception. + raise Exception("The downloaded certificate is not a " + "valid PEM file") + + mkdir_p(os.path.dirname(path)) + + try: + with open(path, "w") as f: + f.write(client_cert) + except IOError as exc: + logger.error( + "Error saving client cert: %r" % (exc,)) + raise + + check_and_fix_urw_only(path) |