Mercurial > libervia-backend
view src/plugins/plugin_xep_0166.py @ 1622:5b24d6bf5d15
core, bridge: actionsGet:
- added a new mechanism to keep actions until they are answered (or timeout-ed)
- keep_id must be explicitly used on actionNew
- actionsGet is used to retrive these actions
- the mechanism is used in deferXMLUI
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 17 Nov 2015 21:28:58 +0100 |
parents | d05f9179fe22 |
children | c25f63215632 |
line wrap: on
line source
#!/usr/bin/python # -*- coding: utf-8 -*- # SAT plugin for Jingle (XEP-0166) # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 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 _, D_ from sat.core.constants import Const as C from sat.core.log import getLogger from sat.tools import xml_tools log = getLogger(__name__) from sat.core import exceptions from twisted.words.protocols.jabber import jid from twisted.internet import defer from twisted.internet import reactor from wokkel import disco, iwokkel from twisted.words.protocols.jabber import error from twisted.words.protocols.jabber import xmlstream from twisted.python import failure from collections import namedtuple import uuid import time from zope.interface import implements IQ_SET = '/iq[@type="set"]' NS_JINGLE = "urn:xmpp:jingle:1" NS_JINGLE_ERROR = "urn:xmpp:jingle:errors:1" JINGLE_REQUEST = IQ_SET + '/jingle[@xmlns="' + NS_JINGLE + '"]' STATE_PENDING = "PENDING" STATE_ACTIVE = "ACTIVE" STATE_ENDED = "ENDED" CONFIRM_TXT = D_("{entity} want to start a jingle session with you, do you accept ?") PLUGIN_INFO = { "name": "Jingle", "import_name": "XEP-0166", "type": "XEP", "protocols": ["XEP-0166"], "main": "XEP_0166", "handler": "yes", "description": _("""Implementation of Jingle""") } ApplicationData = namedtuple('ApplicationData', ('namespace', 'handler')) TransportData = namedtuple('TransportData', ('namespace', 'handler', 'priority')) class XEP_0166(object): ROLE_INITIATOR = "initiator" ROLE_RESPONDER = "responder" TRANSPORT_DATAGRAM='UDP' TRANSPORT_STREAMING='TCP' REASON_SUCCESS='success' REASON_DECLINE='decline' REASON_FAILED_APPLICATION='failed-application' REASON_FAILED_TRANSPORT='failed-transport' A_SESSION_INITIATE = "session-initiate" A_SESSION_ACCEPT = "session-accept" A_SESSION_TERMINATE = "session-terminate" A_SESSION_INFO = "session-info" A_TRANSPORT_INFO = "transport-info" # non standard actions A_PREPARE_INITIATOR = "prepare-initiator" # initiator must prepare tranfer A_PREPARE_RESPONDER = "prepare-responder" # responder must prepare tranfer A_ACCEPTED_ACK = "accepted-ack" # session accepted ack has been received from initiator A_START = "start" # application can start def __init__(self, host): log.info(_("plugin Jingle initialization")) self.host = host self._applications = {} # key: namespace, value: application data self._transports = {} # key: namespace, value: transport data # we also keep transports by type, they are then sorted by priority self._type_transports = { XEP_0166.TRANSPORT_DATAGRAM: [], XEP_0166.TRANSPORT_STREAMING: [], } def profileConnected(self, profile): client = self.host.getClient(profile) client.jingle_sessions = {} # key = sid, value = session_data def getHandler(self, profile): return XEP_0166_handler(self) def _delSession(self, client, sid): try: del client.jingle_sessions[sid] except KeyError: log.debug(u"Jingle session id [{}] is unknown, nothing to delete".format(sid)) else: log.debug(u"Jingle session id [{}] deleted".format(sid)) ## helpers methods to build stanzas ## def _buildJingleElt(self, client, session, action): iq_elt = client.IQ('set') iq_elt['from'] = client.jid.full() iq_elt['to'] = session['peer_jid'].full() jingle_elt = iq_elt.addElement("jingle", NS_JINGLE) jingle_elt["sid"] = session['id'] jingle_elt['action'] = action return iq_elt, jingle_elt def sendError(self, error_condition, sid, request, jingle_condition=None, profile=C.PROF_KEY_NONE): """Send error stanza @param error_condition: one of twisted.words.protocols.jabber.error.STANZA_CONDITIONS keys @param sid(unicode,None): jingle session id, or None, if session must not be destroyed @param request(domish.Element): original request @param jingle_condition(None, unicode): if not None, additional jingle-specific error information @param profile: %(doc_profile)s """ client = self.host.getClient(profile) iq_elt = error.StanzaError(error_condition).toResponse(request) if jingle_condition is not None: iq_elt.error.addElement((NS_JINGLE_ERROR, jingle_condition)) if error.STANZA_CONDITIONS[error_condition]['type'] == 'cancel' and sid: self._delSession(client, sid) log.warning(u"Error while managing jingle session, cancelling: {condition}".format(error_condition)) client.xmlstream.send(iq_elt) def terminate(self, reason, session, profile): """Terminate the session send the session-terminate action, and delete the session data @param reason(unicode, list[domish.Element]): if unicode, will be transformed to an element if a list of element, add them as children of the <reason/> element @param session(dict): data of the session @param profile: %(doc_profile)s """ client = self.host.getClient(profile) iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_TERMINATE) reason_elt = jingle_elt.addElement('reason') if isinstance(reason, basestring): reason_elt.addElement(reason) else: for elt in reason: reason_elt.addChild(elt) self._delSession(client, session['id']) d = iq_elt.send() return d ## errors which doesn't imply a stanza sending ## def _iqError(self, failure_, sid, client): """Called when we got an <iq/> error @param failure_(failure.Failure): the exceptions raised @param sid(unicode): jingle session id @param profile: %(doc_client)s """ log.warning(u"Error while sending jingle <iq/> stanza: {failure_}".format(failure_=failure_.value)) self._delSession(client, sid) def _jingleErrorCb(self, fail, sid, request, client): """Called when something is going wrong while parsing jingle request The error condition depend of the exceptions raised: exceptions.DataError raise a bad-request condition @param fail(failure.Failure): the exceptions raised @param sid(unicode): jingle session id @param request(domsih.Element): jingle request @param client: %(doc_client)s """ log.warning("Error while processing jingle request") if isinstance(fail, exceptions.DataError): self.sendError('bad-request', sid, request, profile=client.profile) else: log.error("Unmanaged jingle exception") self._delSession(client, sid) raise fail ## methods used by other plugins ## def registerApplication(self, namespace, handler): """Register an application plugin @param namespace(unicode): application namespace managed by the plugin @param handler(object): instance of a class which manage the application. May have the following methods: - requestConfirmation(session, desc_elt, client): - if present, it is called on when session must be accepted. - if it return True the session is accepted, else rejected. A Deferred can be returned - if not present, a generic accept dialog will be used - jingleSessionInit(self, session, content_name[, *args, **kwargs], profile): must return the domish.Element used for initial content - jingleHandler(self, action, session, content_name, transport_elt, profile): called on several action to negociate the application or transport """ if namespace in self._applications: raise exceptions.ConflictError(u"Trying to register already registered namespace {}".format(namespace)) self._applications[namespace] = ApplicationData(namespace=namespace, handler=handler) log.debug(u"new jingle application registered") def registerTransport(self, namespace, transport_type, handler, priority=0): """Register a transport plugin @param namespace(unicode): the XML namespace used for this transport @param transport_type(unicode): type of transport to use (see XEP-0166 §8) @param handler(object): instance of a class which manage the application. Must have the following methods: - jingleSessionInit(self, session, content_name[, *args, **kwargs], profile): must return the domish.Element used for initial content - jingleHandler(self, action, session, content_name, transport_elt, profile): called on several action to negociate the application or transport @param priority(int): priority of this transport """ assert transport_type in (XEP_0166.TRANSPORT_DATAGRAM, XEP_0166.TRANSPORT_STREAMING) if namespace in self._transports: raise exceptions.ConflictError(u"Trying to register already registered namespace {}".format(namespace)) transport_data = TransportData(namespace=namespace, handler=handler, priority=priority) self._type_transports[transport_type].append(transport_data) self._type_transports[transport_type].sort(key=lambda transport_data: transport_data.priority, reverse=True) self._transports[namespace] = transport_data log.debug(u"new jingle transport registered") def buildAction(self, action, session, content_name, profile=C.PROF_KEY_NONE): """Build an element according to requested action @param action(unicode): a jingle action (see XEP-0166 §7.2), session-* actions are not managed here @param session(dict): jingle session data @param content_name(unicode): name of the content @param profile: %(doc_profile)s @return (tuple[domish.Element, domish.Element]): parent <iq> element, <transport> or <description> element, according to action """ client = self.host.getClient(profile) # we first build iq, jingle and content element which are the same in every cases iq_elt, jingle_elt = self._buildJingleElt(client, session, action) # FIXME: XEP-0260 § 2.3 Ex 5 has an initiator attribute, but it should not according to XEP-0166 §7.1 table 1, must be checked content_data= session['contents'][content_name] content_elt = jingle_elt.addElement('content') content_elt['name'] = content_name content_elt['creator'] = content_data['creator'] if action == XEP_0166.A_TRANSPORT_INFO: context_elt = transport_elt = content_elt.addElement('transport', content_data['transport'].namespace) transport_elt['sid'] = content_data['transport_data']['sid'] else: raise exceptions.InternalError(u"unmanaged action {}".format(action)) return iq_elt, context_elt def buildSessionInfo(self, session, profile=C.PROF_KEY_NONE): """Build a session-info action @param session(dict): jingle session data @param profile: %(doc_profile)s @return (tuple[domish.Element, domish.Element]): parent <iq> element, <jingle> element """ client = self.host.getClient(profile) return self._buildJingleElt(client, session, XEP_0166.A_SESSION_INFO) @defer.inlineCallbacks def initiate(self, peer_jid, contents, profile=C.PROF_KEY_NONE): """Send a session initiation request @param peer_jid(jid.JID): jid to establith session with @param contents(list[dict]): list of contents to use: The dict must have the following keys: - app_ns(unicode): namespace of the application the following keys are optional: - transport_type(unicode): type of transport to use (see XEP-0166 §8) default to TRANSPORT_STREAMING - name(unicode): name of the content - senders(unicode): One of XEP_0166.ROLE_INITIATOR, XEP_0166.ROLE_RESPONDER, both or none default to BOTH (see XEP-0166 §7.3) - app_args(list): args to pass to the application plugin - app_kwargs(dict): keyword args to pass to the application plugin @param profile: %(doc_profile)s @return D(unicode): jingle session id """ assert contents # there must be at least one content client = self.host.getClient(profile) initiator = client.jid sid = unicode(uuid.uuid4()) # TODO: session cleaning after timeout ? session = client.jingle_sessions[sid] = {'id': sid, 'state': STATE_PENDING, 'initiator': initiator, 'role': XEP_0166.ROLE_INITIATOR, 'peer_jid': peer_jid, 'started': time.time(), 'contents': {} } iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_INITIATE) jingle_elt["initiator"] = initiator.full() contents_dict = session['contents'] for content in contents: # we get the application plugin app_ns = content['app_ns'] try: application = self._applications[app_ns] except KeyError: raise exceptions.InternalError(u"No application registered for {}".format(app_ns)) # and the transport plugin transport_type = content.get('transport_type', XEP_0166.TRANSPORT_STREAMING) try: transport = self._type_transports[transport_type][0] except IndexError: raise exceptions.InternalError(u"No transport registered for {}".format(transport_type)) # we build the session data content_data = {'application': application, 'application_data': {}, 'transport': transport, 'transport_data': {}, 'creator': XEP_0166.ROLE_INITIATOR, 'senders': content.get('senders', 'both'), } try: content_name = content['name'] except KeyError: content_name = unicode(uuid.uuid4()) else: if content_name in contents_dict: raise exceptions.InternalError('There is already a content with this name') contents_dict[content_name] = content_data # we construct the content element content_elt = jingle_elt.addElement('content') content_elt['creator'] = content_data['creator'] content_elt['name'] = content_name try: content_elt['senders'] = content['senders'] except KeyError: pass # then the description element app_args = content.get('app_args', []) app_kwargs = content.get('app_kwargs', {}) app_kwargs['profile'] = profile desc_elt = yield application.handler.jingleSessionInit(session, content_name, *app_args, **app_kwargs) content_elt.addChild(desc_elt) # and the transport one transport_elt = yield transport.handler.jingleSessionInit(session, content_name, profile) content_elt.addChild(transport_elt) d = iq_elt.send() d.addErrback(self._iqError, sid, client) yield d def delayedContentTerminate(self, *args, **kwargs): """Put contentTerminate in queue but don't execute immediately This is used to terminate a content inside a handler, to avoid modifying contents """ reactor.callLater(0, self.contentTerminate, *args, **kwargs) def contentTerminate(self, session, content_name, reason=REASON_SUCCESS, profile=C.PROF_KEY_NONE): """Terminate and remove a content if there is no more content, then session is terminated @param session(dict): jingle session @param content_name(unicode): name of the content terminated @param reason(unicode): reason of the termination @param profile: %(doc_profile)s """ contents = session['contents'] del contents[content_name] if not contents: self.terminate(reason, session, profile) ## defaults methods called when plugin doesn't have them ## def jingleRequestConfirmationDefault(self, action, session, content_name, desc_elt, profile): """This method request confirmation for a jingle session""" log.debug(u"Using generic jingle confirmation method") return xml_tools.deferConfirm(self.host, _(CONFIRM_TXT).format(entity=session['peer_jid'].full()), _('Confirm Jingle session'), profile=profile) ## jingle events ## def _onJingleRequest(self, request, profile): """Called when any jingle request is received The request will the be dispatched to appropriate method according to current state @param request(domish.Element): received IQ request @para profile: %(doc_profile)s """ client = self.host.getClient(profile) request.handled = True jingle_elt = request.elements(NS_JINGLE, 'jingle').next() # first we need the session id try: sid = jingle_elt['sid'] if not sid: raise KeyError except KeyError: log.warning(u"Received jingle request has no sid attribute") self.sendError('bad-request', None, request, profile=profile) return # then the action try: action = jingle_elt['action'] if not action: raise KeyError except KeyError: log.warning(u"Received jingle request has no action") self.sendError('bad-request', None, request, profile=profile) return peer_jid = jid.JID(request['from']) # we get or create the session try: session = client.jingle_sessions[sid] except KeyError: if action != XEP_0166.A_SESSION_INITIATE: log.warning(u"Received request for an unknown session id: {}".format(sid)) self.sendError('not-acceptable', None, request, profile=profile) return session = client.jingle_sessions[sid] = {'id': sid, 'state': STATE_PENDING, 'initiator': peer_jid, 'role': XEP_0166.ROLE_RESPONDER, 'peer_jid': peer_jid, 'started': time.time(), } else: if session['peer_jid'] != peer_jid: log.warning(u"sid conflict ({}), the jid doesn't match. Can be a collision, a hack attempt, or a bad sid generation".format(sid)) self.sendError('service-unavailable', sid, request, profile=profile) return if session['id'] != sid: log.error(u"session id doesn't match") self.sendError('service-unavailable', sid, request, profile=profile) raise exceptions.InternalError if action == XEP_0166.A_SESSION_INITIATE: self.onSessionInitiate(client, request, jingle_elt, session) elif action == XEP_0166.A_SESSION_TERMINATE: self.onSessionTerminate(client, request, jingle_elt, session) elif action == XEP_0166.A_SESSION_ACCEPT: self.onSessionAccept(client, request, jingle_elt, session) elif action == XEP_0166.A_SESSION_INFO: self.onSessionInfo(client, request, jingle_elt, session) elif action == XEP_0166.A_TRANSPORT_INFO: self.onTransportInfo(client, request, jingle_elt, session) else: raise exceptions.InternalError(u"Unknown action {}".format(action)) ## Actions callbacks ## def _parseElements(self, jingle_elt, session, request, client, new=False, creator=ROLE_INITIATOR, with_application=True, with_transport=True): """Parse contents elements and fill contents_dict accordingly after the parsing, contents_dict will containt handlers, "desc_elt" and "transport_elt" @param jingle_elt(domish.Element): parent <jingle> element, containing one or more <content> @param session(dict): session data @param request(domish.Element): the whole request @param client: %(doc_client)s @param new(bool): if new the content is new and must be created, else the content must exists, and session data will be filled @param creator(unicode): only used if new is True: creating pear (see § 7.3) @param with_application(bool): if True, raise an error if there is no <description> element else ignore it @param with_transport(bool): if True, raise an error if there is no <transport> element else ignore it @raise exceptions.CancelError: the error is treated the calling method can cancel the treatment (i.e. return) """ contents_dict = session['contents'] content_elts = jingle_elt.elements(NS_JINGLE, 'content') for content_elt in content_elts: name = content_elt['name'] if new: # the content must not exist, we check it if not name or name in contents_dict: self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError content_data = contents_dict[name] = {'creator': creator, 'senders': content_elt.attributes.get('senders', 'both'), } else: # the content must exist, we check it try: content_data = contents_dict[name] except KeyError: log.warning(u"Other peer try to access an unknown content") self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError # application if with_application: desc_elt = content_elt.description if not desc_elt: self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError if new: # the content is new, we need to check and link the application app_ns = desc_elt.uri if not app_ns or app_ns == NS_JINGLE: self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError try: application = self._applications[app_ns] except KeyError: log.warning(u"Unmanaged application namespace [{}]".format(app_ns)) self.sendError('service-unavailable', session['id'], request, profile=client.profile) raise exceptions.CancelError content_data['application'] = application content_data['application_data'] = {} else: # the content exists, we check that we have not a former desc_elt if 'desc_elt' in content_data: raise exceptions.InternalError(u"desc_elt should not exist at this point") content_data['desc_elt'] = desc_elt # transport if with_transport: transport_elt = content_elt.transport if not transport_elt: self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError if new: # the content is new, we need to check and link the transport transport_ns = transport_elt.uri if not app_ns or app_ns == NS_JINGLE: self.sendError('bad-request', session['id'], request, profile=client.profile) raise exceptions.CancelError try: transport = self._transports[transport_ns] except KeyError: raise exceptions.InternalError(u"No transport registered for namespace {}".format(transport_ns)) content_data['transport'] = transport content_data['transport_data'] = {} else: # the content exists, we check that we have not a former transport_elt if 'transport_elt' in content_data: raise exceptions.InternalError(u"desc_elt should not exist at this point") content_data['transport_elt'] = transport_elt def _callPlugins(self, action, session, app_method_name='jingleHandler', transp_method_name='jingleHandler', app_default_cb=None, transp_default_cb=None, delete=True, elements=True, force_element=None, profile=C.PROF_KEY_NONE): """Call application and transport plugin methods for all contents @param action(unicode): jingle action name @param session(dict): jingle session data @param app_method_name(unicode, None): name of the method to call for applications None to ignore @param transp_method_name(unicode, None): name of the method to call for transports None to ignore @param app_default_cb(callable, None): default callback to use if plugin has not app_method_name None to raise an exception instead @param transp_default_cb(callable, None): default callback to use if plugin has not transp_method_name None to raise an exception instead @param delete(bool): if True, remove desc_elt and transport_elt from session ignored if elements is False @param elements(bool): True if elements(desc_elt and tranport_elt) must be managed must be True if _callPlugins is used in a request, and False if it used after a request (i.e. on <iq> result or error) @param force_element(None, domish.Element, object): if elements is None, it is used as element parameter else it is ignored @param profile(unicode): %(doc_profile)s @return (list[defer.Deferred]): list of launched Deferred @raise exceptions.NotFound: method is not implemented """ contents_dict = session['contents'] defers_list = [] for content_name, content_data in contents_dict.iteritems(): for method_name, handler_key, default_cb, elt_name in ( (app_method_name, 'application', app_default_cb, 'desc_elt'), (transp_method_name, 'transport', transp_default_cb, 'transport_elt')): if method_name is None: continue handler = content_data[handler_key].handler try: method = getattr(handler, method_name) except AttributeError: if default_cb is not None: method = default_cb else: raise exceptions.NotFound(u'{} not implemented !'.format(method_name)) if elements: elt = content_data.pop(elt_name) if delete else content_data[elt_name] else: elt = force_element d = defer.maybeDeferred(method, action, session, content_name, elt, profile) defers_list.append(d) return defers_list def onSessionInitiate(self, client, request, jingle_elt, session): """Called on session-initiate action The "jingleRequestConfirmation" method of each application will be called (or self.jingleRequestConfirmationDefault if the former doesn't exist). The session is only accepted if all application are confirmed. The application must manage itself multiple contents scenari (e.g. audio/video). @param client: %(doc_client)s @param request(domish.Element): full request @param jingle_elt(domish.Element): <jingle> element @param session(dict): session data """ if 'contents' in session: raise exceptions.InternalError("Contents dict should not already exist at this point") session['contents'] = contents_dict = {} try: self._parseElements(jingle_elt, session, request, client, True, XEP_0166.ROLE_INITIATOR) except exceptions.CancelError: return if not contents_dict: # there MUST be at least one content self.sendError('bad-request', session['id'], request, profile=client.profile) return # at this point we can send the <iq/> result to confirm reception of the request client.xmlstream.send(xmlstream.toResponse(request, 'result')) # we now request each application plugin confirmation # and if all are accepted, we can accept the session confirm_defers = self._callPlugins(XEP_0166.A_SESSION_INITIATE, session, 'jingleRequestConfirmation', None, self.jingleRequestConfirmationDefault, delete=False, profile=client.profile) confirm_dlist = defer.gatherResults(confirm_defers) confirm_dlist.addCallback(self._confirmationCb, session, jingle_elt, client) confirm_dlist.addErrback(self._jingleErrorCb, session['id'], request, client) def _confirmationCb(self, confirm_results, session, jingle_elt, client): """Method called when confirmation from user has been received This method is only called for the responder @param confirm_results(list[bool]): all True if session is accepted @param session(dict): session data @param jingle_elt(domish.Element): jingle data of this session @param client: %(doc_client)s """ confirmed = all(confirm_results) if not confirmed: return self.terminate(XEP_0166.REASON_DECLINE, session, client.profile) iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_ACCEPT) jingle_elt['responder'] = client.jid.full() # contents def addElement(domish_elt, content_elt): content_elt.addChild(domish_elt) defers_list = [] for content_name, content_data in session['contents'].iteritems(): content_elt = jingle_elt.addElement('content') content_elt['creator'] = XEP_0166.ROLE_INITIATOR content_elt['name'] = content_name application = content_data['application'] app_session_accept_cb = application.handler.jingleHandler app_d = defer.maybeDeferred(app_session_accept_cb, XEP_0166.A_SESSION_INITIATE, session, content_name, content_data.pop('desc_elt'), client.profile) app_d.addCallback(addElement, content_elt) defers_list.append(app_d) transport = content_data['transport'] transport_session_accept_cb = transport.handler.jingleHandler transport_d = defer.maybeDeferred(transport_session_accept_cb, XEP_0166.A_SESSION_INITIATE, session, content_name, content_data.pop('transport_elt'), client.profile) transport_d.addCallback(addElement, content_elt) defers_list.append(transport_d) d_list = defer.DeferredList(defers_list) d_list.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_PREPARE_RESPONDER, session, app_method_name=None, elements=False, profile=client.profile)) d_list.addCallback(lambda dummy: iq_elt.send()) def changeState(dummy, session): session['state'] = STATE_ACTIVE d_list.addCallback(changeState, session) d_list.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_ACCEPTED_ACK, session, elements=False, profile=client.profile)) d_list.addErrback(self._iqError, session['id'], client) return d_list def onSessionTerminate(self, client, request, jingle_elt, session): # TODO: check reason, display a message to user if needed log.debug("Jingle Session {} terminated".format(session['id'])) self._delSession(client, session['id']) client.xmlstream.send(xmlstream.toResponse(request, 'result')) def onSessionAccept(self, client, request, jingle_elt, session): """Method called once session is accepted This method is only called for initiator @param client: %(doc_client)s @param request(domish.Element): full <iq> request @param jingle_elt(domish.Element): the <jingle> element @param session(dict): session data """ log.debug(u"Jingle session {} has been accepted".format(session['id'])) try: self._parseElements(jingle_elt, session, request, client) except exceptions.CancelError: return # at this point we can send the <iq/> result to confirm reception of the request client.xmlstream.send(xmlstream.toResponse(request, 'result')) # and change the state session['state'] = STATE_ACTIVE negociate_defers = [] negociate_defers = self._callPlugins(XEP_0166.A_SESSION_ACCEPT, session, profile=client.profile) negociate_dlist = defer.DeferredList(negociate_defers) # after negociations we start the transfer negociate_dlist.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_START, session, app_method_name=None, elements=False, profile=client.profile)) def _onSessionCb(self, result, client, request, jingle_elt, session): client.xmlstream.send(xmlstream.toResponse(request, 'result')) def _onSessionEb(self, failure_, client, request, jingle_elt, session): log.error(u"Error while handling onSessionInfo: {}".format(failure_.value)) # XXX: only error managed so far, maybe some applications/transports need more self.sendError('feature-not-implemented', None, request, 'unsupported-info', client.profile) def onSessionInfo(self, client, request, jingle_elt, session): """Method called when a session-info action is received from other peer This method is only called for initiator @param client: %(doc_client)s @param request(domish.Element): full <iq> request @param jingle_elt(domish.Element): the <jingle> element @param session(dict): session data """ if not jingle_elt.children: # this is a session ping, see XEP-0166 §6.8 client.xmlstream.send(xmlstream.toResponse(request, 'result')) return try: # XXX: session-info is most likely only used for application, so we don't call transport plugins # if a future transport use it, this behaviour must be adapted defers = self._callPlugins(XEP_0166.A_SESSION_INFO, session, 'jingleSessionInfo', None, elements=False, force_element=jingle_elt, profile=client.profile) except exceptions.NotFound as e: self._onSessionEb(failure.Failure(e), client, request, jingle_elt, session) return dlist = defer.DeferredList(defers, fireOnOneErrback=True) dlist.addCallback(self._onSessionCb, client, request, jingle_elt, session) dlist.addErrback(self._onSessionCb, client, request, jingle_elt, session) def onTransportInfo(self, client, request, jingle_elt, session): """Method called when a transport-info action is received from other peer The request is parsed, and jingleHandler is called on concerned transport plugin(s) @param client: %(doc_client)s @param request(domish.Element): full <iq> request @param jingle_elt(domish.Element): the <jingle> element @param session(dict): session data """ log.debug(u"Jingle session {} has been accepted".format(session['id'])) try: self._parseElements(jingle_elt, session, request, client, with_application=False) except exceptions.CancelError: return # The parsing was OK, we send the <iq> result client.xmlstream.send(xmlstream.toResponse(request, 'result')) for content_name, content_data in session['contents'].iteritems(): try: transport_elt = content_data.pop('transport_elt') except KeyError: continue else: content_data['transport'].handler.jingleHandler(XEP_0166.A_TRANSPORT_INFO, session, content_name, transport_elt, client.profile) class XEP_0166_handler(xmlstream.XMPPHandler): implements(iwokkel.IDisco) def __init__(self, plugin_parent): self.plugin_parent = plugin_parent def connectionInitialized(self): self.xmlstream.addObserver(JINGLE_REQUEST, self.plugin_parent._onJingleRequest, profile=self.parent.profile) def getDiscoInfo(self, requestor, target, nodeIdentifier=''): return [disco.DiscoFeature(NS_JINGLE)] def getDiscoItems(self, requestor, target, nodeIdentifier=''): return []