diff options
Diffstat (limited to 'src/leap/soledad/client/http_target/__init__.py')
-rw-r--r-- | src/leap/soledad/client/http_target/__init__.py | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/leap/soledad/client/http_target/__init__.py b/src/leap/soledad/client/http_target/__init__.py new file mode 100644 index 00000000..b67d03f6 --- /dev/null +++ b/src/leap/soledad/client/http_target/__init__.py @@ -0,0 +1,94 @@ +# -*- coding: utf-8 -*- +# __init__.py +# Copyright (C) 2015 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/>. + + +""" +A U1DB backend for encrypting data before sending to server and decrypting +after receiving. +""" + + +import os + +from twisted.web.client import Agent +from twisted.internet import reactor + +from leap.common.certs import get_compatible_ssl_context_factory +from leap.soledad.common.log import getLogger +from leap.soledad.client.http_target.send import HTTPDocSender +from leap.soledad.client.http_target.api import SyncTargetAPI +from leap.soledad.client.http_target.fetch import HTTPDocFetcher +from leap.soledad.client import crypto as old_crypto + + +logger = getLogger(__name__) + + +# we may want to collect statistics from the sync process +DO_STATS = False +if os.environ.get('SOLEDAD_STATS'): + DO_STATS = True + + +class SoledadHTTPSyncTarget(SyncTargetAPI, HTTPDocSender, HTTPDocFetcher): + + """ + A SyncTarget that encrypts data before sending and decrypts data after + receiving. + + Normally encryption will have been written to the sync database upon + document modification. The sync database is also used to write temporarily + the parsed documents that the remote send us, before being decrypted and + written to the main database. + """ + def __init__(self, url, source_replica_uid, creds, crypto, cert_file): + """ + Initialize the sync target. + + :param url: The server sync url. + :type url: str + :param source_replica_uid: The source replica uid which we use when + deferring decryption. + :type source_replica_uid: str + :param creds: A dictionary containing the uuid and token. + :type creds: creds + :param crypto: An instance of SoledadCrypto so we can encrypt/decrypt + document contents when syncing. + :type crypto: soledad._crypto.SoledadCrypto + :param cert_file: Path to the certificate of the ca used to validate + the SSL certificate used by the remote soledad + server. + :type cert_file: str + """ + if url.endswith("/"): + url = url[:-1] + self._url = str(url) + "/sync-from/" + str(source_replica_uid) + self.source_replica_uid = source_replica_uid + self._auth_header = None + self._uuid = None + self.set_creds(creds) + self._crypto = crypto + # TODO: DEPRECATED CRYPTO + self._deprecated_crypto = old_crypto.SoledadCrypto(crypto.secret) + self._insert_doc_cb = None + + # Twisted default Agent with our own ssl context factory + factory = get_compatible_ssl_context_factory(cert_file) + self._http = Agent(reactor, factory) + + if DO_STATS: + self.sync_exchange_phase = [0] |