Mercurial > libervia-backend
view sat/plugins/plugin_xep_0261.py @ 3178:98b321234068
plugin aesgcm: use 12 bytes Initialisation Vector:
SàT was using 16 bytes IV when sending files withr AES-GCM, due to ChatSecure being only
compatible with that. Monal, an other iOS client is only compatible with 12 bytes IV, and
ChatSecure has fixed its code to also handle 12 bytes IV, so there is not reason anymore
to use 16 bytes, and SàT now uses 12 bytes.
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 18 Feb 2020 18:17:18 +0100 |
parents | 559a625a236b |
children | be6d91572633 |
line wrap: on
line source
#!/usr/bin/env python3 # SAT plugin for Jingle (XEP-0261) # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero 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 Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. from sat.core.i18n import _ from sat.core.constants import Const as C from sat.core.log import getLogger log = getLogger(__name__) from wokkel import disco, iwokkel from zope.interface import implementer from twisted.words.xish import domish import uuid try: from twisted.words.protocols.xmlstream import XMPPHandler except ImportError: from wokkel.subprotocols import XMPPHandler NS_JINGLE_IBB = "urn:xmpp:jingle:transports:ibb:1" PLUGIN_INFO = { C.PI_NAME: "Jingle In-Band Bytestreams", C.PI_IMPORT_NAME: "XEP-0261", C.PI_TYPE: "XEP", C.PI_MODES: C.PLUG_MODE_BOTH, C.PI_PROTOCOLS: ["XEP-0261"], C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0047"], C.PI_MAIN: "XEP_0261", C.PI_HANDLER: "yes", C.PI_DESCRIPTION: _("""Implementation of Jingle In-Band Bytestreams"""), } class XEP_0261(object): NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace def __init__(self, host): log.info(_("plugin Jingle In-Band Bytestreams")) self.host = host self._j = host.plugins["XEP-0166"] # shortcut to access jingle self._ibb = host.plugins["XEP-0047"] # and in-band bytestream self._j.registerTransport( NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000 ) # must be the lowest priority def getHandler(self, client): return XEP_0261_handler() def jingleSessionInit(self, client, session, content_name): transport_elt = domish.Element((NS_JINGLE_IBB, "transport")) content_data = session["contents"][content_name] transport_data = content_data["transport_data"] transport_data["block_size"] = self._ibb.BLOCK_SIZE transport_elt["block-size"] = str(transport_data["block_size"]) transport_elt["sid"] = transport_data["sid"] = str(uuid.uuid4()) return transport_elt def jingleHandler(self, client, action, session, content_name, transport_elt): content_data = session["contents"][content_name] transport_data = content_data["transport_data"] if action in ( self._j.A_SESSION_ACCEPT, self._j.A_ACCEPTED_ACK, self._j.A_TRANSPORT_ACCEPT, ): pass elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE): transport_data["sid"] = transport_elt["sid"] elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER): local_jid = session["local_jid"] peer_jid = session["peer_jid"] sid = transport_data["sid"] stream_object = content_data["stream_object"] if action == self._j.A_START: block_size = transport_data["block_size"] d = self._ibb.startStream( client, stream_object, local_jid, peer_jid, sid, block_size ) d.chainDeferred(content_data["finished_d"]) else: d = self._ibb.createSession( client, stream_object, local_jid, peer_jid, sid) d.chainDeferred(content_data["finished_d"]) else: log.warning("FIXME: unmanaged action {}".format(action)) return transport_elt @implementer(iwokkel.IDisco) class XEP_0261_handler(XMPPHandler): def getDiscoInfo(self, requestor, target, nodeIdentifier=""): return [disco.DiscoFeature(NS_JINGLE_IBB)] def getDiscoItems(self, requestor, target, nodeIdentifier=""): return []