view sat/plugins/plugin_xep_0261.py @ 2617:81b70eeb710f

quick_frontend(contact list): refactored update: update is now called with appropriate constant value (C.UPDATE_ADD, C.UPDATE_DELETE, C.UPDATE_MODIFY and so on) when a widget change visibility according to current options. Before it was linked to cache only (C.UPDATE_ADD was only called when contact was first added to cache). This make widget handling in frontends more easy. Renamed entityToShow to entityVisible, which seems to correspond better. Started reducing lines lenght to 90 chars as a test. May become the new coding style soon.
author Goffi <goffi@goffi.org>
date Sun, 24 Jun 2018 21:59:29 +0200
parents 26edcf3a30eb
children 56f94936df1e
line wrap: on
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SAT plugin for Jingle (XEP-0261)
# Copyright (C) 2009-2018 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 implements
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'] = unicode(transport_data['block_size'])
        transport_elt['sid'] = transport_data['sid'] = unicode(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):
            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, peer_jid, sid, block_size)
                d.chainDeferred(content_data['finished_d'])
            else:
                d = self._ibb.createSession(client, stream_object, peer_jid, sid)
                d.chainDeferred(content_data['finished_d'])
        else:
            log.warning(u"FIXME: unmanaged action {}".format(action))
        return transport_elt


class XEP_0261_handler(XMPPHandler):
    implements(iwokkel.IDisco)

    def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
        return [disco.DiscoFeature(NS_JINGLE_IBB)]

    def getDiscoItems(self, requestor, target, nodeIdentifier=''):
        return []