diff --git a/sylk/applications/xmppgateway/__init__.py b/sylk/applications/xmppgateway/__init__.py index 46a86a8..fe4712e 100644 --- a/sylk/applications/xmppgateway/__init__.py +++ b/sylk/applications/xmppgateway/__init__.py @@ -1,393 +1,393 @@ # Copyright (C) 2012 AG Projects. See LICENSE for details # import os from application.notification import IObserver, NotificationCenter from application.python import Null from sipsimple.core import SIPURI from sipsimple.payloads import ParserError from sipsimple.payloads.iscomposing import IsComposingDocument, IsComposingMessage from sipsimple.streams.applications.chat import CPIMMessage, CPIMParserError from sipsimple.threading.green import run_in_green_thread from zope.interface import implements from sylk.applications import ISylkApplication, SylkApplication, ApplicationLogger from sylk.applications.xmppgateway.configuration import XMPPGatewayConfig from sylk.applications.xmppgateway.datatypes import Identity, FrozenURI, generate_sylk_resource, decode_resource from sylk.applications.xmppgateway.im import SIPMessageSender, SIPMessageError, ChatSessionHandler from sylk.applications.xmppgateway.presence import S2XPresenceHandler, X2SPresenceHandler from sylk.applications.xmppgateway.muc import X2SMucHandler from sylk.applications.xmppgateway.xmpp import XMPPManager from sylk.applications.xmppgateway.xmpp.session import XMPPChatSession from sylk.applications.xmppgateway.xmpp.stanzas import ChatMessage, ChatComposingIndication, NormalMessage log = ApplicationLogger(os.path.dirname(__file__).split(os.path.sep)[-1]) class XMPPGatewayApplication(object): __metaclass__ = SylkApplication implements(ISylkApplication, IObserver) __appname__ = 'xmppgateway' def __init__(self): self.xmpp_manager = XMPPManager() self.pending_sessions = {} self.chat_sessions = set() self.s2x_muc_sessions = {} self.x2s_muc_sessions = {} self.s2x_presence_subscriptions = {} self.x2s_presence_subscriptions = {} def start(self): notification_center = NotificationCenter() notification_center.add_observer(self, sender=self.xmpp_manager) self.xmpp_manager.start() def stop(self): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self.xmpp_manager) self.xmpp_manager.stop() def incoming_session(self, session): log.msg('New incoming session from %s' % session.remote_identity.uri) try: msrp_stream = (stream for stream in session.proposed_streams if stream.type=='chat').next() except StopIteration: session.reject(488, 'Only MSRP media is supported') return # Check domain if session.remote_identity.uri.host not in XMPPGatewayConfig.domains: session.reject(606, 'Not Acceptable') return # Get URI representing the SIP side contact_uri = session._invitation.remote_contact_header.uri if contact_uri.parameters.get('gr') is not None: sip_leg_uri = FrozenURI(contact_uri.user, contact_uri.host, contact_uri.parameters.get('gr')) else: tmp = session.remote_identity.uri sip_leg_uri = FrozenURI(tmp.user, tmp.host, generate_sylk_resource()) # Get URI representing the XMPP side request_uri = session._invitation.request_uri remote_resource = request_uri.parameters.get('gr', None) if remote_resource is not None: try: remote_resource = decode_resource(remote_resource) except (TypeError, UnicodeError): pass xmpp_leg_uri = FrozenURI(request_uri.user, request_uri.host, remote_resource) try: handler = self.pending_sessions[(sip_leg_uri, xmpp_leg_uri)] except KeyError: pass else: # There is another pending session with same identifiers, can't accept this one session.reject(488) return sip_identity = Identity(sip_leg_uri, session.remote_identity.display_name) handler = ChatSessionHandler.new_from_sip_session(sip_identity, session) notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) key = (sip_leg_uri, xmpp_leg_uri) self.pending_sessions[key] = handler if xmpp_leg_uri.resource is not None: # Incoming session target contained GRUU, so create XMPPChatSession immediately xmpp_session = XMPPChatSession(local_identity=handler.sip_identity, remote_identity=Identity(xmpp_leg_uri)) handler.xmpp_identity = xmpp_session.remote_identity handler.xmpp_session = xmpp_session def incoming_subscription(self, subscribe_request, data): if subscribe_request.event != 'presence': subscribe_request.reject(489) return # Check domain remote_identity_uri = data.headers['From'].uri if remote_identity_uri.host not in XMPPGatewayConfig.domains: subscribe_request.reject(606) return # Get URI representing the SIP side sip_leg_uri = FrozenURI(remote_identity_uri.user, remote_identity_uri.host) # Get URI representing the XMPP side request_uri = data.request_uri xmpp_leg_uri = FrozenURI(request_uri.user, request_uri.host) try: handler = self.s2x_presence_subscriptions[(sip_leg_uri, xmpp_leg_uri)] except KeyError: sip_identity = Identity(sip_leg_uri, data.headers['From'].display_name) xmpp_identity = Identity(xmpp_leg_uri) handler = S2XPresenceHandler(sip_identity, xmpp_identity) notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) handler.start() handler.add_sip_subscription(subscribe_request) def incoming_referral(self, refer_request, data): refer_request.reject(405) def incoming_sip_message(self, message_request, data): - content_type = data.headers.get('Content-Type', Null)[0] + content_type = data.headers.get('Content-Type', Null).content_type from_header = data.headers.get('From', Null) to_header = data.headers.get('To', Null) if Null in (content_type, from_header, to_header): message_request.answer(400) return log.msg('New incoming SIP MESSAGE from %s' % from_header.uri) # Check domain if from_header.uri.host not in XMPPGatewayConfig.domains: message_request.answer(606) return if content_type == 'message/cpim': try: cpim_message = CPIMMessage.parse(data.body) except CPIMParserError: message_request.answer(400) return else: body = cpim_message.body content_type = cpim_message.content_type sender = cpim_message.sender or from_header from_uri = sender.uri else: body = data.body from_uri = from_header.uri to_uri = str(to_header.uri) message_request.answer(200) if from_uri.parameters.get('gr', None) is None: from_uri = SIPURI.new(from_uri) from_uri.parameters['gr'] = generate_sylk_resource() sender = Identity(FrozenURI.parse(from_uri)) recipient = Identity(FrozenURI.parse(to_uri)) if content_type in ('text/plain', 'text/html'): if content_type == 'text/plain': html_body = None else: html_body = body body = None if XMPPGatewayConfig.use_msrp_for_chat: message = NormalMessage(sender, recipient, body, html_body, use_receipt=False) self.xmpp_manager.send_stanza(message) else: message = ChatMessage(sender, recipient, body, html_body, use_receipt=False) self.xmpp_manager.send_stanza(message) elif content_type == IsComposingDocument.content_type: if not XMPPGatewayConfig.use_msrp_for_chat: try: msg = IsComposingMessage.parse(body) except ParserError: pass else: state = 'composing' if msg.state == 'active' else 'paused' message = ChatComposingIndication(sender, recipient, state, use_receipt=False) self.xmpp_manager.send_stanza(message) def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) # Out of band XMPP stanza handling @run_in_green_thread def _NH_XMPPGotChatMessage(self, notification): # This notification is only processed here untill the ChatSessionHandler # has both (SIP and XMPP) sessions established message = notification.data.message sender = message.sender recipient = message.recipient if XMPPGatewayConfig.use_msrp_for_chat: if recipient.uri.resource is None: # If recipient resource is not set the session is started from # the XMPP side sip_leg_uri = FrozenURI.new(recipient.uri) xmpp_leg_uri = FrozenURI.new(sender.uri) try: handler = self.pending_sessions[(sip_leg_uri, xmpp_leg_uri)] except KeyError: # Not found, need to create a new handler and a outgoing SIP session xmpp_identity = Identity(xmpp_leg_uri) handler = ChatSessionHandler.new_from_xmpp_stanza(xmpp_identity, sip_leg_uri) key = (sip_leg_uri, xmpp_leg_uri) self.pending_sessions[key] = handler notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) handler.enqueue_xmpp_message(message) else: # Find handler pending XMPP confirmation sip_leg_uri = FrozenURI.new(recipient.uri) xmpp_leg_uri = FrozenURI(sender.uri.user, sender.uri.host) try: handler = self.pending_sessions[(sip_leg_uri, xmpp_leg_uri)] except KeyError: # Find handler pending XMPP confirmation sip_leg_uri = FrozenURI(recipient.uri.user, recipient.uri.host) xmpp_leg_uri = FrozenURI.new(sender.uri) try: handler = self.pending_sessions[(sip_leg_uri, xmpp_leg_uri)] except KeyError: # It's a new XMPP session to a full JID, disregard the full JID and start a new SIP session to the bare JID xmpp_identity = Identity(xmpp_leg_uri) handler = ChatSessionHandler.new_from_xmpp_stanza(xmpp_identity, sip_leg_uri) key = (sip_leg_uri, xmpp_leg_uri) self.pending_sessions[key] = handler notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) handler.enqueue_xmpp_message(message) else: # Found handle, create XMPP session and establish session session = XMPPChatSession(local_identity=recipient, remote_identity=sender) handler.enqueue_xmpp_message(message) handler.xmpp_identity = session.remote_identity handler.xmpp_session = session else: sip_message_sender = SIPMessageSender(message) try: sip_message_sender.send().wait() except SIPMessageError as e: # TODO report back an error stanza log.error('Error sending SIP MESSAGE: %s' % e) @run_in_green_thread def _NH_XMPPGotNormalMessage(self, notification): message = notification.data.message sip_message_sender = SIPMessageSender(message) try: sip_message_sender.send().wait() except SIPMessageError as e: # TODO report back an error stanza log.error('Error sending SIP MESSAGE: %s' % e) @run_in_green_thread def _NH_XMPPGotComposingIndication(self, notification): composing_indication = notification.data.composing_indication sender = composing_indication.sender recipient = composing_indication.recipient if not XMPPGatewayConfig.use_msrp_for_chat: state = 'active' if composing_indication.state == 'composing' else 'idle' body = IsComposingMessage(state=state, refresh=composing_indication.interval or 30).toxml() message = NormalMessage(sender, recipient, body, IsComposingDocument.content_type) sip_message_sender = SIPMessageSender(message) try: sip_message_sender.send().wait() except SIPMessageError as e: # TODO report back an error stanza log.error('Error sending SIP MESSAGE: %s' % e) def _NH_XMPPGotPresenceSubscriptionRequest(self, notification): stanza = notification.data.stanza # Disregard the resource part, the presence request could be a probe instead of a subscribe sender_uri = stanza.sender.uri sender_uri_bare = FrozenURI(sender_uri.user, sender_uri.host) try: handler = self.x2s_presence_subscriptions[(sender_uri_bare, stanza.recipient.uri)] except KeyError: xmpp_identity = stanza.sender xmpp_identity.uri = sender_uri_bare sip_identity = stanza.recipient handler = X2SPresenceHandler(sip_identity, xmpp_identity) notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) handler.start() def _NH_XMPPGotMucJoinRequest(self, notification): stanza = notification.data.stanza muc_uri = FrozenURI(stanza.recipient.uri.user, stanza.recipient.uri.host) nickname = stanza.recipient.uri.resource try: handler = self.x2s_muc_sessions[(stanza.sender.uri, muc_uri)] except KeyError: xmpp_identity = stanza.sender sip_identity = stanza.recipient sip_identity.uri = muc_uri handler = X2SMucHandler(sip_identity, xmpp_identity, nickname) handler._first_stanza = stanza notification_center = NotificationCenter() notification_center.add_observer(self, sender=handler) handler.start() def _NH_XMPPGotMucLeaveRequest(self, notification): # TODO: give error? pass # Chat session handling def _NH_ChatSessionDidStart(self, notification): handler = notification.sender log.msg('Chat session established sip:%s <--> xmpp:%s' % (handler.sip_identity.uri, handler.xmpp_identity.uri)) for k,v in self.pending_sessions.items(): if v is handler: del self.pending_sessions[k] break self.chat_sessions.add(handler) def _NH_ChatSessionDidEnd(self, notification): handler = notification.sender log.msg('Chat session ended sip:%s <--> xmpp:%s' % (handler.sip_identity.uri, handler.xmpp_identity.uri)) self.chat_sessions.remove(handler) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=handler) def _NH_ChatSessionDidFail(self, notification): handler = notification.sender uris = None for k,v in self.pending_sessions.items(): if v is handler: uris = k del self.pending_sessions[k] break sip_uri, xmpp_uri = uris log.msg('Chat session failed sip:%s <--> xmpp:%s' % (sip_uri, xmpp_uri)) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=handler) # Presence handling def _NH_S2XPresenceHandlerDidStart(self, notification): handler = notification.sender log.msg('Presence session established sip:%s --> xmpp:%s' % (handler.sip_identity.uri, handler.xmpp_identity.uri)) self.s2x_presence_subscriptions[(handler.sip_identity.uri, handler.xmpp_identity.uri)] = handler def _NH_S2XPresenceHandlerDidEnd(self, notification): handler = notification.sender log.msg('Presence session ended sip:%s --> xmpp:%s' % (handler.sip_identity.uri, handler.xmpp_identity.uri)) self.s2x_presence_subscriptions.pop((handler.sip_identity.uri, handler.xmpp_identity.uri), None) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=handler) def _NH_X2SPresenceHandlerDidStart(self, notification): handler = notification.sender log.msg('Presence session established xmpp:%s --> sip:%s' % (handler.xmpp_identity.uri, handler.sip_identity.uri)) self.x2s_presence_subscriptions[(handler.xmpp_identity.uri, handler.sip_identity.uri)] = handler def _NH_X2SPresenceHandlerDidEnd(self, notification): handler = notification.sender log.msg('Presence session ended xmpp:%s --> sip:%s' % (handler.xmpp_identity.uri, handler.sip_identity.uri)) self.x2s_presence_subscriptions.pop((handler.xmpp_identity.uri, handler.sip_identity.uri), None) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=handler) # MUC handling def _NH_X2SMucHandlerDidStart(self, notification): handler = notification.sender log.msg('MUC session established xmpp:%s --> sip:%s' % (handler.xmpp_identity.uri, handler.sip_identity.uri)) self.x2s_muc_sessions[(handler.xmpp_identity.uri, handler.sip_identity.uri)] = handler def _NH_X2SMucHandlerDidEnd(self, notification): handler = notification.sender log.msg('MUC session ended xmpp:%s --> sip:%s' % (handler.xmpp_identity.uri, handler.sip_identity.uri)) self.x2s_muc_sessions.pop((handler.xmpp_identity.uri, handler.sip_identity.uri), None) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=handler) diff --git a/sylk/applications/xmppgateway/im.py b/sylk/applications/xmppgateway/im.py index 8f7123d..c8e3f6b 100644 --- a/sylk/applications/xmppgateway/im.py +++ b/sylk/applications/xmppgateway/im.py @@ -1,458 +1,458 @@ # Copyright (C) 2012 AG Projects. See LICENSE for details # import os from application.notification import IObserver, NotificationCenter from application.python import Null from application.python.descriptor import WriteOnceAttribute from collections import deque from eventlib import coros from sipsimple.account import AccountManager from sipsimple.configuration.settings import SIPSimpleSettings from sipsimple.core import SIPURI from sipsimple.core import ContactHeader, FromHeader, RouteHeader, ToHeader from sipsimple.core import Message as SIPMessageRequest from sipsimple.lookup import DNSLookup, DNSLookupError from sipsimple.streams.applications.chat import CPIMIdentity from sipsimple.threading import run_in_twisted_thread from sipsimple.threading.green import run_in_green_thread, run_in_waitable_green_thread from twisted.internet import reactor from zope.interface import implements from sylk.applications import ApplicationLogger from sylk.applications.xmppgateway.configuration import XMPPGatewayConfig from sylk.applications.xmppgateway.datatypes import Identity, FrozenURI, generate_sylk_resource, encode_resource from sylk.applications.xmppgateway.xmpp import XMPPManager from sylk.applications.xmppgateway.xmpp.session import XMPPChatSession from sylk.applications.xmppgateway.xmpp.stanzas import ChatMessage from sylk.extensions import ChatStream from sylk.session import ServerSession log = ApplicationLogger(os.path.dirname(__file__).split(os.path.sep)[-1]) __all__ = ['ChatSessionHandler', 'SIPMessageSender', 'SIPMessageError'] SESSION_TIMEOUT = XMPPGatewayConfig.sip_session_timeout class ChatSessionHandler(object): implements(IObserver) sip_identity = WriteOnceAttribute() xmpp_identity = WriteOnceAttribute() def __init__(self): self.started = False self.ended = False self.sip_session = None self.msrp_stream = None self._sip_session_timer = None self.use_receipts = False self.xmpp_session = None self._xmpp_message_queue = deque() self._pending_msrp_chunks = {} self._pending_xmpp_stanzas = {} def _set_started(self, value): old_value = self.__dict__.get('started', False) self.__dict__['started'] = value if not old_value and value: notification_center = NotificationCenter() notification_center.post_notification('ChatSessionDidStart', sender=self) self._send_queued_messages() def _get_started(self): return self.__dict__['started'] started = property(_get_started, _set_started) del _get_started, _set_started def _set_xmpp_session(self, session): self.__dict__['xmpp_session'] = session if session is not None: # Reet SIP session timer in case it's active if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) notification_center = NotificationCenter() notification_center.add_observer(self, sender=session) session.start() # Reet SIP session timer in case it's active if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) def _get_xmpp_session(self): return self.__dict__['xmpp_session'] xmpp_session = property(_get_xmpp_session, _set_xmpp_session) del _get_xmpp_session, _set_xmpp_session @classmethod def new_from_sip_session(cls, sip_identity, session): instance = cls() instance.sip_identity = sip_identity instance._start_incoming_sip_session(session) return instance @classmethod def new_from_xmpp_stanza(cls, xmpp_identity, recipient): instance = cls() instance.xmpp_identity = xmpp_identity instance._start_outgoing_sip_session(recipient) return instance @run_in_green_thread def _start_incoming_sip_session(self, session): self.sip_session = session self.msrp_stream = (stream for stream in session.proposed_streams if stream.type=='chat').next() notification_center = NotificationCenter() notification_center.add_observer(self, sender=self.sip_session) notification_center.add_observer(self, sender=self.msrp_stream) self.sip_session.accept([self.msrp_stream]) @run_in_green_thread def _start_outgoing_sip_session(self, target_uri): notification_center = NotificationCenter() # self.xmpp_identity is our local identity from_uri = self.xmpp_identity.uri.as_sip_uri() del from_uri.parameters['gr'] # no GRUU in From header contact_uri = self.xmpp_identity.uri.as_sip_uri() contact_uri.parameters['gr'] = encode_resource(contact_uri.parameters['gr'].decode('utf-8')) to_uri = target_uri.as_sip_uri() lookup = DNSLookup() settings = SIPSimpleSettings() account = AccountManager().sylkserver_account if account.sip.outbound_proxy is not None: uri = SIPURI(host=account.sip.outbound_proxy.host, port=account.sip.outbound_proxy.port, parameters={'transport': account.sip.outbound_proxy.transport}) else: uri = to_uri try: routes = lookup.lookup_sip_proxy(uri, settings.sip.transport_list).wait() except DNSLookupError: log.warning('DNS lookup error while looking for %s proxy' % uri) notification_center.post_notification('ChatSessionDidFail', sender=self) return self.msrp_stream = ChatStream(account) route = routes.pop(0) from_header = FromHeader(from_uri) to_header = ToHeader(to_uri) contact_header = ContactHeader(contact_uri) self.sip_session = ServerSession(account) notification_center.add_observer(self, sender=self.sip_session) notification_center.add_observer(self, sender=self.msrp_stream) self.sip_session.connect(from_header, to_header, contact_header=contact_header, routes=[route], streams=[self.msrp_stream]) def end(self): if self.ended: return if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.cancel() self._sip_session_timer = None notification_center = NotificationCenter() if self.sip_session is not None: notification_center.remove_observer(self, sender=self.sip_session) notification_center.remove_observer(self, sender=self.msrp_stream) self.sip_session.end() self.sip_session = None self.msrp_stream = None if self.xmpp_session is not None: notification_center.remove_observer(self, sender=self.xmpp_session) self.xmpp_session.end() self.xmpp_session = None self.ended = True if self.started: notification_center.post_notification('ChatSessionDidEnd', sender=self) else: notification_center.post_notification('ChatSessionDidFail', sender=self) def enqueue_xmpp_message(self, message): if self.started: raise RuntimeError('session is already started') self._xmpp_message_queue.append(message) def _send_queued_messages(self): if self._xmpp_message_queue: while self._xmpp_message_queue: message = self._xmpp_message_queue.popleft() if message.body is None: continue if not message.use_receipt: success_report = 'no' failure_report = 'no' else: success_report = 'yes' failure_report = 'yes' sender_uri = message.sender.uri.as_sip_uri() sender_uri.parameters['gr'] = encode_resource(sender_uri.parameters['gr'].decode('utf-8')) sender = CPIMIdentity(sender_uri) self.msrp_stream.send_message(message.body, 'text/plain', local_identity=sender, message_id=message.id, notify_progress=True, success_report=success_report, failure_report=failure_report) self.msrp_stream.send_composing_indication('idle', 30, local_identity=sender) def _inactivity_timeout(self): log.msg("Ending SIP session %s due to incactivity" % self.sip_session._invitation.call_id) self.sip_session.end() def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) def _NH_SIPSessionDidStart(self, notification): log.msg("SIP session %s started" % notification.sender._invitation.call_id) self._sip_session_timer = reactor.callLater(SESSION_TIMEOUT, self._inactivity_timeout) if self.sip_session.direction == 'outgoing': # Time to set sip_identity and create the XMPPChatSession contact_uri = self.sip_session._invitation.remote_contact_header.uri if contact_uri.parameters.get('gr') is not None: sip_leg_uri = FrozenURI(contact_uri.user, contact_uri.host, contact_uri.parameters.get('gr')) else: tmp = self.sip_session.remote_identity.uri sip_leg_uri = FrozenURI(tmp.user, tmp.host, generate_sylk_resource()) self.sip_identity = Identity(sip_leg_uri, self.sip_session.remote_identity.display_name) session = XMPPChatSession(local_identity=self.sip_identity, remote_identity=self.xmpp_identity) self.xmpp_session = session # Session is now established on both ends self.started = True # Try to wakeup XMPP clients self.xmpp_session.send_composing_indication('active') self.xmpp_session.send_message(' ', 'text/plain') else: if self.xmpp_session is not None: # Session is now established on both ends self.started = True # Try to wakeup XMPP clients self.xmpp_session.send_composing_indication('active') self.xmpp_session.send_message(' ', 'text/plain') else: # Try to wakeup XMPP clients sender = self.sip_identity tmp = self.sip_session.local_identity.uri recipient_uri = FrozenURI(tmp.user, tmp.host) recipient = Identity(recipient_uri) xmpp_manager = XMPPManager() xmpp_manager.send_stanza(ChatMessage(sender, recipient, ' ', 'text/plain')) # Send queued messages self._send_queued_messages() def _NH_SIPSessionDidEnd(self, notification): log.msg("SIP session %s ended" % notification.sender._invitation.call_id) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self.sip_session) notification_center.remove_observer(self, sender=self.msrp_stream) self.sip_session = None self.msrp_stream = None self.end() def _NH_SIPSessionDidFail(self, notification): log.msg("SIP session %s failed" % notification.sender._invitation.call_id) notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self.sip_session) notification_center.remove_observer(self, sender=self.msrp_stream) self.sip_session = None self.msrp_stream = None self.end() def _NH_SIPSessionGotProposal(self, notification): self.sip_session.reject_proposal() def _NH_SIPSessionTransferNewIncoming(self, notification): self.sip_session.reject_transfer(403) def _NH_ChatStreamGotMessage(self, notification): # Notification is sent by the MSRP stream message = notification.data.message content_type = message.content_type.lower() if content_type not in ('text/plain', 'text/html'): return if content_type == 'text/plain': html_body = None body = message.body else: html_body = message.body body = None if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) chunk = notification.data.chunk if self.started: self.xmpp_session.send_message(body, html_body, message_id=chunk.message_id) if self.use_receipts: self._pending_msrp_chunks[chunk.message_id] = chunk else: self.msrp_stream.msrp_session.send_report(chunk, 200, 'OK') else: sender = self.sip_identity recipient_uri = FrozenURI.parse(message.recipients[0].uri) recipient = Identity(recipient_uri, message.recipients[0].display_name) xmpp_manager = XMPPManager() xmpp_manager.send_stanza(ChatMessage(sender, recipient, body, html_body)) self.msrp_stream.msrp_session.send_report(chunk, 200, 'OK') def _NH_ChatStreamGotComposingIndication(self, notification): # Notification is sent by the MSRP stream if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) if not self.started: return state = None if notification.data.state == 'active': state = 'composing' elif notification.data.state == 'idle': state = 'paused' if state is not None: self.xmpp_session.send_composing_indication(state) def _NH_ChatStreamDidDeliverMessage(self, notification): if self.started: message = self._pending_xmpp_stanzas.pop(notification.data.message_id, None) if message is not None: self.xmpp_session.send_receipt_acknowledgement(message.id) def _NH_ChatStreamDidNotDeliverMessage(self, notification): if self.started: message = self._pending_xmpp_stanzas.pop(notification.data.message_id, None) if message is not None: self.xmpp_session.send_error(message, 'TODO', []) # TODO def _NH_XMPPChatSessionDidStart(self, notification): if self.sip_session is not None: # Session is now established on both ends self.started = True def _NH_XMPPChatSessionDidEnd(self, notification): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self.xmpp_session) self.xmpp_session = None self.end() def _NH_XMPPChatSessionGotMessage(self, notification): if self.sip_session is None or self.sip_session.state != 'connected': self._xmpp_message_queue.append(notification.data.message) return if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) message = notification.data.message sender_uri = message.sender.uri.as_sip_uri() del sender_uri.parameters['gr'] # no GRUU in CPIM From header sender = CPIMIdentity(sender_uri) self.use_receipts = message.use_receipt if not message.use_receipt: success_report = 'no' failure_report = 'no' else: success_report = 'yes' failure_report = 'yes' self._pending_xmpp_stanzas[message.id] = message # Prefer plaintext self.msrp_stream.send_message(message.body, 'text/plain', local_identity=sender, message_id=message.id, notify_progress=True, success_report=success_report, failure_report=failure_report) self.msrp_stream.send_composing_indication('idle', 30, local_identity=sender) def _NH_XMPPChatSessionGotComposingIndication(self, notification): if self.sip_session is None or self.sip_session.state != 'connected': return if self._sip_session_timer is not None and self._sip_session_timer.active(): self._sip_session_timer.reset(SESSION_TIMEOUT) message = notification.data.message state = None if message.state == 'composing': state = 'active' elif message.state == 'paused': state = 'idle' if state is not None: sender_uri = message.sender.uri.as_sip_uri() del sender_uri.parameters['gr'] # no GRUU in CPIM From header sender = CPIMIdentity(sender_uri) self.msrp_stream.send_composing_indication(state, 30, local_identity=sender) if message.use_receipt: self.xmpp_session.send_receipt_acknowledgement(message.id) def _NH_XMPPChatSessionDidDeliverMessage(self, notification): chunk = self._pending_msrp_chunks.pop(notification.data.message_id, None) if chunk is not None: self.msrp_stream.msrp_session.send_report(chunk, 200, 'OK') def _NH_XMPPChatSessionDidNotDeliverMessage(self, notification): chunk = self._pending_msrp_chunks.pop(notification.data.message_id, None) if chunk is not None: self.msrp_stream.msrp_session.send_report(chunk, notification.data.code, notification.data.reason) def chunks(text, size): for i in xrange(0, len(text), size): yield text[i:i+size] class SIPMessageError(Exception): def __init__(self, code, reason): Exception.__init__(self, reason) self.code = code self.reason = reason class SIPMessageSender(object): implements(IObserver) def __init__(self, message): self.from_uri = message.sender.uri.as_sip_uri() self.from_uri.parameters.pop('gr', None) # No GRUU in From header self.to_uri = message.recipient.uri.as_sip_uri() self.to_uri.parameters.pop('gr', None) # Don't send it to the GRUU self.body = message.body self.content_type = 'text/plain' self._requests = set() self._channel = coros.queue() @run_in_waitable_green_thread def send(self): lookup = DNSLookup() settings = SIPSimpleSettings() account = AccountManager().sylkserver_account if account.sip.outbound_proxy is not None: uri = SIPURI(host=account.sip.outbound_proxy.host, port=account.sip.outbound_proxy.port, parameters={'transport': account.sip.outbound_proxy.transport}) else: uri = self.to_uri try: routes = lookup.lookup_sip_proxy(uri, settings.sip.transport_list).wait() except DNSLookupError: msg = 'DNS lookup error while looking for %s proxy' % uri log.warning(msg) raise SIPMessageError(0, msg) else: route = routes.pop(0) from_header = FromHeader(self.from_uri) to_header = ToHeader(self.to_uri) - route_header = RouteHeader(route.get_uri()) + route_header = RouteHeader(route.uri) notification_center = NotificationCenter() for chunk in chunks(self.body, 1000): request = SIPMessageRequest(from_header, to_header, route_header, self.content_type, self.body) notification_center.add_observer(self, sender=request) self._requests.add(request) request.send() error = None count = len(self._requests) while count > 0: notification = self._channel.wait() if notification.name == 'SIPMessageDidFail': error = (notification.data.code, notification.data.reason) count -= 1 self._requests.clear() if error is not None: raise SIPMessageError(*error) @run_in_twisted_thread def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) def _NH_SIPMessageDidSucceed(self, notification): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=notification.sender) self._channel.send(notification) def _NH_SIPMessageDidFail(self, notification): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=notification.sender) self._channel.send(notification) diff --git a/sylk/applications/xmppgateway/presence.py b/sylk/applications/xmppgateway/presence.py index 7866532..dafc548 100644 --- a/sylk/applications/xmppgateway/presence.py +++ b/sylk/applications/xmppgateway/presence.py @@ -1,482 +1,482 @@ # Copyright (C) 2012 AG Projects. See LICENSE for details # import hashlib import os import random import urllib from application.notification import IObserver, NotificationCenter from application.python import Null, limit from application.python.descriptor import WriteOnceAttribute from eventlib import coros, proc from sipsimple.account import AccountManager from sipsimple.configuration.settings import SIPSimpleSettings from sipsimple.core import SIPURI, SIPCoreError from sipsimple.core import ContactHeader, FromHeader, RouteHeader, ToHeader from sipsimple.core import Subscription from sipsimple.lookup import DNSLookup, DNSLookupError from sipsimple.payloads import pidf, rpid from sipsimple.payloads import ParserError from sipsimple.threading import run_in_twisted_thread from sipsimple.threading.green import Command, run_in_green_thread from time import time from twisted.internet import reactor from zope.interface import implements from sylk.applications import ApplicationLogger from sylk.applications.xmppgateway.datatypes import Identity, FrozenURI, encode_resource from sylk.applications.xmppgateway.xmpp.stanzas import AvailabilityPresence from sylk.applications.xmppgateway.xmpp.subscription import XMPPSubscription, XMPPIncomingSubscription from sylk.configuration import SIPConfig log = ApplicationLogger(os.path.dirname(__file__).split(os.path.sep)[-1]) __all__ = ['S2XPresenceHandler', 'X2SPresenceHandler'] class S2XPresenceHandler(object): implements(IObserver) sip_identity = WriteOnceAttribute() xmpp_identity = WriteOnceAttribute() def __init__(self, sip_identity, xmpp_identity): self.ended = False self._sip_subscriptions = [] self._stanza_cache = {} self._pidf = None self._xmpp_subscription = None self.sip_identity = sip_identity self.xmpp_identity = xmpp_identity def start(self): notification_center = NotificationCenter() self._xmpp_subscription = XMPPSubscription(local_identity=self.sip_identity, remote_identity=self.xmpp_identity) notification_center.add_observer(self, sender=self._xmpp_subscription) self._xmpp_subscription.start() notification_center.post_notification('S2XPresenceHandlerDidStart', sender=self) def end(self): if self.ended: return notification_center = NotificationCenter() if self._xmpp_subscription is not None: notification_center.remove_observer(self, sender=self._xmpp_subscription) self._xmpp_subscription.end() self._xmpp_subscription = None while self._sip_subscriptions: subscription = self._sip_subscriptions.pop() notification_center.remove_observer(self, sender=subscription) try: subscription.end() except SIPCoreError: pass self.ended = True notification_center.post_notification('S2XPresenceHandlerDidEnd', sender=self) def add_sip_subscription(self, subscription): self._sip_subscriptions.append(subscription) notification_center = NotificationCenter() notification_center.add_observer(self, sender=subscription) if self._xmpp_subscription.state == 'active': pidf_doc = self._pidf content_type = pidf.PIDFDocument.content_type if pidf_doc is not None else None subscription.accept(content_type, pidf_doc) else: subscription.accept_pending() def _build_pidf(self): if not self._stanza_cache: self._pidf = None return None pidf_doc = pidf.PIDF(str(self.xmpp_identity)) uri = self._stanza_cache.iterkeys().next() person = pidf.Person("ID-%s" % hashlib.md5("%s@%s" % (uri.user, uri.host)).hexdigest()) person.activities = rpid.Activities() pidf_doc.add(person) for stanza in self._stanza_cache.itervalues(): if not stanza.available: status = pidf.Status('closed') status.extended = 'offline' else: status = pidf.Status('open') if stanza.show == 'away': status.extended = 'away' if 'away' not in person.activities: person.activities.add('away') elif stanza.show == 'xa': status.extended = 'extended-away' if 'away' not in person.activities: person.activities.add('away') elif stanza.show == 'dnd': stanza.extended = 'busy' if 'busy' not in person.activities: person.activities.add('busy') else: stanza.extended = 'available' resource = encode_resource(stanza.sender.uri.resource) tuple_id = "ID-%s" % resource sip_uri = stanza.sender.uri.as_sip_uri() sip_uri.parameters['gr'] = resource contact = pidf.Contact(str(sip_uri)) tuple = pidf.Service(tuple_id, status=status, contact=contact) tuple.add(pidf.DeviceID(resource)) tuple.device_info = pidf.DeviceInfo(resource, description=urllib.quote(stanza.sender.uri.resource.encode('utf-8'))) for lang, note in stanza.statuses.iteritems(): tuple.notes.add(pidf.PIDFNote(note, lang=lang)) pidf_doc.add(tuple) if not person.activities: person.activities = None self._pidf = pidf_doc.toxml() return self._pidf def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) @run_in_twisted_thread def _NH_SIPIncomingSubscriptionDidEnd(self, notification): notification_center = NotificationCenter() subscription = notification.sender notification_center.remove_observer(self, sender=subscription) self._sip_subscriptions.remove(subscription) if not self._sip_subscriptions: self.end() def _NH_XMPPSubscriptionChangedState(self, notification): if notification.data.prev_state == 'subscribe_sent' and notification.data.state == 'active': pidf_doc = self._pidf content_type = pidf.PIDFDocument.content_type if pidf_doc is not None else None for subscription in (subscription for subscription in self._sip_subscriptions if subscription.state == 'pending'): subscription.accept(content_type, pidf_doc) def _NH_XMPPSubscriptionGotNotify(self, notification): stanza = notification.data.presence self._stanza_cache[stanza.sender.uri] = stanza pidf_doc = self._build_pidf() for subscription in self._sip_subscriptions: try: subscription.push_content(pidf.PIDFDocument.content_type, pidf_doc) except SIPCoreError: pass if not stanza.available: # Only inform once about this device being unavailable del self._stanza_cache[stanza.sender.uri] def _NH_XMPPSubscriptionDidFail(self, notification): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self._xmpp_subscription) self._xmpp_subscription = None self.end() _NH_XMPPSubscriptionDidEnd = _NH_XMPPSubscriptionDidFail class InterruptSubscription(Exception): pass class TerminateSubscription(Exception): pass class SubscriptionError(Exception): def __init__(self, error, timeout, refresh_interval=None, fatal=False): self.error = error self.refresh_interval = refresh_interval self.timeout = timeout self.fatal = fatal class SIPSubscriptionDidFail(Exception): def __init__(self, data): self.data = data class X2SPresenceHandler(object): implements(IObserver) sip_identity = WriteOnceAttribute() xmpp_identity = WriteOnceAttribute() def __init__(self, sip_identity, xmpp_identity): self.ended = False self.sip_identity = sip_identity self.xmpp_identity = xmpp_identity self.subscribed = False self._command_proc = None self._command_channel = coros.queue() self._data_channel = coros.queue() self._sip_subscription = None self._sip_subscription_proc = None self._sip_subscription_timer = None self._xmpp_subscription = None def start(self): notification_center = NotificationCenter() self._xmpp_subscription = XMPPIncomingSubscription(local_identity=self.sip_identity, remote_identity=self.xmpp_identity) notification_center.add_observer(self, sender=self._xmpp_subscription) self._xmpp_subscription.start() self._command_proc = proc.spawn(self._run) self._subscribe_sip() notification_center.post_notification('X2SPresenceHandlerDidStart', sender=self) def end(self): if self.ended: return notification_center = NotificationCenter() if self._xmpp_subscription is not None: notification_center.remove_observer(self, sender=self._xmpp_subscription) self._xmpp_subscription.end() self._xmpp_subscription = None if self._sip_subscription: self._unsubscribe_sip() self.ended = True notification_center.post_notification('X2SPresenceHandlerDidEnd', sender=self) @run_in_green_thread def _subscribe_sip(self): command = Command('subscribe') self._command_channel.send(command) @run_in_green_thread def _unsubscribe_sip(self): command = Command('unsubscribe') self._command_channel.send(command) command.wait() self._command_proc.kill() self._command_proc = None def _run(self): while True: command = self._command_channel.wait() handler = getattr(self, '_CH_%s' % command.name) handler(command) def _CH_subscribe(self, command): if self._sip_subscription_timer is not None and self._sip_subscription_timer.active(): self._sip_subscription_timer.cancel() self._sip_subscription_timer = None if self._sip_subscription_proc is not None: subscription_proc = self._sip_subscription_proc subscription_proc.kill(InterruptSubscription) subscription_proc.wait() self._sip_subscription_proc = proc.spawn(self._sip_subscription_handler, command) def _CH_unsubscribe(self, command): # Cancel any timer which would restart the subscription process if self._sip_subscription_timer is not None and self._sip_subscription_timer.active(): self._sip_subscription_timer.cancel() self._sip_subscription_timer = None if self._sip_subscription_proc is not None: subscription_proc = self._sip_subscription_proc subscription_proc.kill(TerminateSubscription) subscription_proc.wait() self._sip_subscription_proc = None command.signal() def _process_pidf(self, body): try: pidf_doc = pidf.PIDF.parse(body) except ParserError, e: log.warn('Error parsing PIDF document: %s' % e) return # Build XML stanzas out of PIDF documents try: person = (p for p in pidf_doc.persons).next() except StopIteration: person = None for service in pidf_doc.services: sip_contact = self.sip_identity.uri.as_sip_uri() if service.device_info is not None: sip_contact.parameters['gr'] = service.device_info.id else: sip_contact.parameters['gr'] = service.id # TODO: pseudorandom thing with AoR? sender = Identity(FrozenURI.parse(sip_contact)) if service.status.extended is not None: available = service.status.extended != 'offline' else: available = service.status.basic == 'open' stanza = AvailabilityPresence(sender, self.xmpp_identity, available) for note in service.notes: stanza.statuses[note.lang] = note if service.status.extended is not None: if service.status.extended == 'away': stanza.show = 'away' elif service.status.extended == 'extended-away': stanza.show = 'xa' elif service.status.extended == 'busy': stanza.show = 'dnd' elif person is not None and person.activities is not None: activities = set(list(person.activities)) if 'away' in activities: stanza.show = 'away' elif set(('holiday', 'vacation')).intersection(activities): stanza.show = 'xa' elif 'busy' in activities: stanza.show = 'dnd' self._xmpp_subscription.send_presence(stanza) def _sip_subscription_handler(self, command): notification_center = NotificationCenter() settings = SIPSimpleSettings() account = AccountManager().sylkserver_account refresh_interval = getattr(command, 'refresh_interval', None) or account.sip.subscribe_interval try: # Lookup routes if account.sip.outbound_proxy is not None: uri = SIPURI(host=account.sip.outbound_proxy.host, port=account.sip.outbound_proxy.port, parameters={'transport': account.sip.outbound_proxy.transport}) else: uri = SIPURI(host=self.sip_identity.uri.as_sip_uri().host) lookup = DNSLookup() try: routes = lookup.lookup_sip_proxy(uri, settings.sip.transport_list).wait() except DNSLookupError, e: timeout = random.uniform(15, 30) raise SubscriptionError(error='DNS lookup failed: %s' % e, timeout=timeout) timeout = time() + 30 for route in routes: remaining_time = timeout - time() if remaining_time > 0: transport = route.transport parameters = {} if transport=='udp' else {'transport': transport} contact_uri = SIPURI(user=account.contact.username, host=SIPConfig.local_ip, port=getattr(SIPConfig, 'local_%s_port' % transport), parameters=parameters) subscription_uri = self.sip_identity.uri.as_sip_uri() subscription = Subscription(subscription_uri, FromHeader(self.xmpp_identity.uri.as_sip_uri()), ToHeader(subscription_uri), ContactHeader(contact_uri), 'presence', - RouteHeader(route.get_uri()), + RouteHeader(route.uri), refresh=refresh_interval) notification_center.add_observer(self, sender=subscription) try: subscription.subscribe(timeout=limit(remaining_time, min=1, max=5)) except SIPCoreError: notification_center.remove_observer(self, sender=subscription) raise SubscriptionError(error='Internal error', timeout=5) self._sip_subscription = subscription try: while True: notification = self._data_channel.wait() if notification.sender is subscription and notification.name == 'SIPSubscriptionDidStart': break except SIPSubscriptionDidFail, e: notification_center.remove_observer(self, sender=subscription) self._sip_subscription = None if e.data.code == 407: # Authentication failed, so retry the subscription in some time raise SubscriptionError(error='Authentication failed', timeout=random.uniform(60, 120)) elif e.data.code == 403: # Forbidden raise SubscriptionError(error='Forbidden', timeout=None, fatal=True) elif e.data.code == 423: # Get the value of the Min-Expires header if e.data.min_expires is not None and e.data.min_expires > refresh_interval: interval = e.data.min_expires else: interval = None raise SubscriptionError(error='Interval too short', timeout=random.uniform(60, 120), refresh_interval=interval) elif e.data.code in (405, 406, 489): raise SubscriptionError(error='Method or event not supported', timeout=None, fatal=True) elif e.data.code == 1400: raise SubscriptionError(error=e.data.reason, timeout=None, fatal=True) else: # Otherwise just try the next route continue else: self.subscribed = True command.signal() break else: # There are no more routes to try, give up raise SubscriptionError(error='No more routes to try', timeout=None, fatal=True) # At this point it is subscribed. Handle notifications and ending/failures. try: while True: notification = self._data_channel.wait() if notification.sender is not self._sip_subscription: continue if self._xmpp_subscription is None: continue if notification.name == 'SIPSubscriptionGotNotify': if notification.data.event == 'presence': subscription_state = notification.data.headers.get('Subscription-State').state if subscription_state == 'active' and self._xmpp_subscription.state != 'active': self._xmpp_subscription.accept() elif subscription_state == 'pending' and self._xmpp_subscription.state == 'active': # The state went from active to pending, hide the presence state? pass if notification.data.body: self._process_pidf(notification.data.body) elif notification.name == 'SIPSubscriptionDidEnd': break except SIPSubscriptionDidFail, e: if e.data.code == 0 and e.data.reason == 'rejected': self._xmpp_subscription.reject() else: self._command_channel.send(Command('subscribe')) notification_center.remove_observer(self, sender=self._sip_subscription) except InterruptSubscription, e: if not self.subscribed: command.signal(e) if self._sip_subscription is not None: notification_center.remove_observer(self, sender=self._sip_subscription) try: self._sip_subscription.end(timeout=2) except SIPCoreError: pass except TerminateSubscription, e: if not self.subscribed: command.signal(e) if self._sip_subscription is not None: try: self._sip_subscription.end(timeout=2) except SIPCoreError: pass else: try: while True: notification = self._data_channel.wait() if notification.sender is self._sip_subscription and notification.name == 'SIPSubscriptionDidEnd': break except SIPSubscriptionDidFail: pass finally: notification_center.remove_observer(self, sender=self._sip_subscription) except SubscriptionError, e: if not e.fatal: self._sip_subscription_timer = reactor.callLater(e.timeout, self._command_channel.send, Command('subscribe', command.event, refresh_interval=e.refresh_interval)) finally: self.subscribed = False self._sip_subscription = None self._sip_subscription_proc = None reactor.callLater(0, self.end) @run_in_twisted_thread def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) def _NH_SIPSubscriptionDidStart(self, notification): self._data_channel.send(notification) def _NH_SIPSubscriptionDidEnd(self, notification): self._data_channel.send(notification) def _NH_SIPSubscriptionDidFail(self, notification): self._data_channel.send_exception(SIPSubscriptionDidFail(notification.data)) def _NH_SIPSubscriptionGotNotify(self, notification): self._data_channel.send(notification) def _NH_XMPPIncomingSubscriptionGotUnsubscribe(self, notification): self.end() def _NH_XMPPIncomingSubscriptionGotSubscribe(self, notification): if self._sip_subscription.state.lower() == 'active': self._xmpp_subscription.accept() _NH_XMPPIncomingSubscriptionGotProbe = _NH_XMPPIncomingSubscriptionGotSubscribe diff --git a/sylk/session.py b/sylk/session.py index bfeb00e..72ab3f2 100644 --- a/sylk/session.py +++ b/sylk/session.py @@ -1,626 +1,626 @@ # Copyright (C) 2011 AG Projects. See LICENSE for details. # from __future__ import with_statement import random from datetime import datetime from time import time from application.notification import IObserver, NotificationCenter, NotificationData from application.python import Null, limit from application.python.types import Singleton from eventlib import api, coros, proc from sipsimple.account import AccountManager from sipsimple.configuration.settings import SIPSimpleSettings from sipsimple.core import Invitation, Subscription, SIPCoreError, sip_status_messages from sipsimple.core import ContactHeader, RouteHeader, SubjectHeader, FromHeader, ToHeader from sipsimple.core import SIPURI, SDPConnection, SDPSession from sipsimple.lookup import DNSLookup, DNSLookupError from sipsimple.payloads import ParserError from sipsimple.payloads.conference import ConferenceDocument from sipsimple.session import Session from sipsimple.session import SessionReplaceHandler, TransferHandler, DialogID, TransferInfo from sipsimple.session import InvitationDisconnectedError, MediaStreamDidFailError, InterruptSubscription, TerminateSubscription, SubscriptionError, SIPSubscriptionDidFail from sipsimple.session import transition_state from sipsimple.streams import MediaStreamRegistry, InvalidStreamError, UnknownStreamError from sipsimple.threading import run_in_twisted_thread from sipsimple.threading.green import Command, run_in_green_thread from twisted.internet import reactor from zope.interface import implements from sylk.configuration import SIPConfig class ConferenceHandler(object): implements(IObserver) def __init__(self, session): self.session = session self.active = False self.subscribed = False self._command_proc = None self._command_channel = coros.queue() self._data_channel = coros.queue() self._subscription = None self._subscription_proc = None self._subscription_timer = None self._wakeup_timer = None notification_center = NotificationCenter() notification_center.add_observer(self, sender=self.session) notification_center.add_observer(self, name='DNSNameserversDidChange') notification_center.add_observer(self, name='SystemIPAddressDidChange') notification_center.add_observer(self, name='SystemDidWakeUpFromSleep') self._command_proc = proc.spawn(self._run) def _run(self): while True: command = self._command_channel.wait() handler = getattr(self, '_CH_%s' % command.name) handler(command) def _activate(self): self.active = True command = Command('subscribe') self._command_channel.send(command) return command def _deactivate(self): self.active = False command = Command('unsubscribe') self._command_channel.send(command) return command def _resubscribe(self): command = Command('subscribe') self._command_channel.send(command) return command def _terminate(self): notification_center = NotificationCenter() notification_center.remove_observer(self, sender=self.session) notification_center.remove_observer(self, name='DNSNameserversDidChange') notification_center.remove_observer(self, name='SystemIPAddressDidChange') notification_center.remove_observer(self, name='SystemDidWakeUpFromSleep') self._deactivate() command = Command('terminate') self._command_channel.send(command) command.wait() self.session = None def _CH_subscribe(self, command): if self._subscription_timer is not None and self._subscription_timer.active(): self._subscription_timer.cancel() self._subscription_timer = None if self._subscription_proc is not None: subscription_proc = self._subscription_proc subscription_proc.kill(InterruptSubscription) subscription_proc.wait() self._subscription_proc = proc.spawn(self._subscription_handler, command) def _CH_unsubscribe(self, command): # Cancel any timer which would restart the subscription process if self._subscription_timer is not None and self._subscription_timer.active(): self._subscription_timer.cancel() self._subscription_timer = None if self._wakeup_timer is not None and self._wakeup_timer.active(): self._wakeup_timer.cancel() self._wakeup_timer = None if self._subscription_proc is not None: subscription_proc = self._subscription_proc subscription_proc.kill(TerminateSubscription) subscription_proc.wait() self._subscription_proc = None command.signal() def _CH_terminate(self, command): command.signal() raise proc.ProcExit() def _subscription_handler(self, command): notification_center = NotificationCenter() settings = SIPSimpleSettings() try: # Lookup routes account = self.session.account if account.sip.outbound_proxy is not None: uri = SIPURI(host=account.sip.outbound_proxy.host, port=account.sip.outbound_proxy.port, parameters={'transport': account.sip.outbound_proxy.transport}) elif account.sip.always_use_my_proxy: uri = SIPURI(host=account.id.domain) else: uri = SIPURI.new(self.session.remote_identity.uri) lookup = DNSLookup() try: routes = lookup.lookup_sip_proxy(uri, settings.sip.transport_list).wait() except DNSLookupError, e: timeout = random.uniform(15, 30) raise SubscriptionError(error='DNS lookup failed: %s' % e, timeout=timeout) target_uri = SIPURI.new(self.session.remote_identity.uri) refresh_interval = getattr(command, 'refresh_interval', account.sip.subscribe_interval) timeout = time() + 30 for route in routes: remaining_time = timeout - time() if remaining_time > 0: transport = route.transport parameters = {} if transport=='udp' else {'transport': transport} contact_uri = SIPURI(user=account.contact.username, host=SIPConfig.local_ip, port=getattr(SIPConfig, 'local_%s_port' % transport), parameters=parameters) subscription = Subscription(target_uri, FromHeader(SIPURI.new(self.session.local_identity.uri)), ToHeader(target_uri), ContactHeader(contact_uri), 'conference', - RouteHeader(route.get_uri()), + RouteHeader(route.uri), credentials=account.credentials, refresh=refresh_interval) notification_center.add_observer(self, sender=subscription) try: subscription.subscribe(timeout=limit(remaining_time, min=1, max=5)) except SIPCoreError: notification_center.remove_observer(self, sender=subscription) timeout = 5 raise SubscriptionError(error='Internal error', timeout=timeout) self._subscription = subscription try: while True: notification = self._data_channel.wait() if notification.sender is subscription and notification.name == 'SIPSubscriptionDidStart': break except SIPSubscriptionDidFail, e: notification_center.remove_observer(self, sender=subscription) self._subscription = None if e.data.code == 407: # Authentication failed, so retry the subscription in some time timeout = random.uniform(60, 120) raise SubscriptionError(error='Authentication failed', timeout=timeout) elif e.data.code == 423: # Get the value of the Min-Expires header timeout = random.uniform(60, 120) if e.data.min_expires is not None and e.data.min_expires > refresh_interval: raise SubscriptionError(error='Interval too short', timeout=timeout, min_expires=e.data.min_expires) else: raise SubscriptionError(error='Interval too short', timeout=timeout) elif e.data.code in (405, 406, 489, 1400): command.signal(e) return else: # Otherwise just try the next route continue else: self.subscribed = True command.signal() break else: # There are no more routes to try, reschedule the subscription timeout = random.uniform(60, 180) raise SubscriptionError(error='No more routes to try', timeout=timeout) # At this point it is subscribed. Handle notifications and ending/failures. try: while True: notification = self._data_channel.wait() if notification.sender is not self._subscription: continue if notification.name == 'SIPSubscriptionGotNotify': if notification.data.event == 'conference' and notification.data.body: try: conference_info = ConferenceDocument.parse(notification.data.body) except ParserError: pass else: notification_center.post_notification('SIPSessionGotConferenceInfo', sender=self.session, data=NotificationData(conference_info=conference_info)) elif notification.name == 'SIPSubscriptionDidEnd': break except SIPSubscriptionDidFail: self._command_channel.send(Command('subscribe')) notification_center.remove_observer(self, sender=self._subscription) except InterruptSubscription, e: if not self.subscribed: command.signal(e) if self._subscription is not None: notification_center.remove_observer(self, sender=self._subscription) try: self._subscription.end(timeout=2) except SIPCoreError: pass except TerminateSubscription, e: if not self.subscribed: command.signal(e) if self._subscription is not None: try: self._subscription.end(timeout=2) except SIPCoreError: pass else: try: while True: notification = self._data_channel.wait() if notification.sender is self._subscription and notification.name == 'SIPSubscriptionDidEnd': break except SIPSubscriptionDidFail: pass finally: notification_center.remove_observer(self, sender=self._subscription) except SubscriptionError, e: if 'min_expires' in e.attributes: command = Command('subscribe', command.event, refresh_interval=e.attributes['min_expires']) else: command = Command('subscribe', command.event) self._subscription_timer = reactor.callLater(e.timeout, self._command_channel.send, command) finally: self.subscribed = False self._subscription = None self._subscription_proc = None @run_in_twisted_thread def handle_notification(self, notification): handler = getattr(self, '_NH_%s' % notification.name, Null) handler(notification) def _NH_SIPSubscriptionDidStart(self, notification): self._data_channel.send(notification) def _NH_SIPSubscriptionDidEnd(self, notification): self._data_channel.send(notification) def _NH_SIPSubscriptionDidFail(self, notification): self._data_channel.send_exception(SIPSubscriptionDidFail(notification.data)) def _NH_SIPSubscriptionGotNotify(self, notification): self._data_channel.send(notification) def _NH_SIPSessionDidStart(self, notification): if self.session.remote_focus: self._activate() @run_in_green_thread def _NH_SIPSessionDidFail(self, notification): self._terminate() @run_in_green_thread def _NH_SIPSessionDidEnd(self, notification): self._terminate() def _NH_SIPSessionDidRenegotiateStreams(self, notification): if self.session.remote_focus and not self.active: self._activate() elif not self.session.remote_focus and self.active: self._deactivate() def _NH_DNSNameserversDidChange(self, notification): if self.active: self._resubscribe() def _NH_SystemIPAddressDidChange(self, notification): if self.active: self._resubscribe() def _NH_SystemDidWakeUpFromSleep(self, notification): if self._wakeup_timer is None: def wakeup_action(): if self.active: self._resubscribe() self._wakeup_timer = None self._wakeup_timer = reactor.callLater(5, wakeup_action) # wait for system to stabilize class ServerSession(Session): def init_incoming(self, invitation, data): notification_center = NotificationCenter() remote_sdp = invitation.sdp.proposed_remote self.proposed_streams = [] if remote_sdp: for index, media_stream in enumerate(remote_sdp.media): if media_stream.port != 0: for stream_type in MediaStreamRegistry(): try: stream = stream_type.new_from_sdp(self.account, remote_sdp, index) except InvalidStreamError: break except UnknownStreamError: continue else: stream.index = index self.proposed_streams.append(stream) break if self.proposed_streams: self.direction = 'incoming' self.state = 'incoming' self.transport = invitation.transport self._invitation = invitation self.conference = ConferenceHandler(self) self.transfer_handler = TransferHandler(self) if 'isfocus' in invitation.remote_contact_header.parameters: self.remote_focus = True try: self.__dict__['subject'] = data.headers['Subject'].subject except KeyError: pass if 'Referred-By' in data.headers or 'Replaces' in data.headers: self.transfer_info = TransferInfo() if 'Referred-By' in data.headers: self.transfer_info.referred_by = data.headers['Referred-By'].body if 'Replaces' in data.headers: replaces_header = data.headers.get('Replaces') replaced_dialog_id = DialogID(replaces_header.call_id, local_tag=replaces_header.to_tag, remote_tag=replaces_header.from_tag) session_manager = SessionManager() try: self.replaced_session = (session for session in session_manager.sessions if session._invitation is not None and session._invitation.dialog_id == replaced_dialog_id).next() except StopIteration: invitation.send_response(481) return else: self.transfer_info.replaced_dialog_id = replaced_dialog_id replace_handler = SessionReplaceHandler(self) replace_handler.start() notification_center.add_observer(self, sender=invitation) notification_center.post_notification('SIPSessionNewIncoming', self, NotificationData(streams=self.proposed_streams, headers=data.headers)) else: invitation.send_response(488) @transition_state(None, 'connecting') @run_in_green_thread def connect(self, from_header, to_header, routes, streams, contact_header=None, is_focus=False, subject=None, extra_headers=[]): self.greenlet = api.getcurrent() notification_center = NotificationCenter() settings = SIPSimpleSettings() connected = False received_code = 0 received_reason = None unhandled_notifications = [] self.direction = 'outgoing' self.proposed_streams = streams self.route = routes[0] self.transport = self.route.transport self.local_focus = is_focus self._invitation = Invitation() self._local_identity = from_header self._remote_identity = to_header self.conference = ConferenceHandler(self) self.transfer_handler = Null self.__dict__['subject'] = subject notification_center.add_observer(self, sender=self._invitation) notification_center.post_notification('SIPSessionNewOutgoing', self, NotificationData(streams=streams)) for stream in self.proposed_streams: notification_center.add_observer(self, sender=stream) stream.initialize(self, direction='outgoing') try: wait_count = len(self.proposed_streams) while wait_count > 0: notification = self._channel.wait() if notification.name == 'MediaStreamDidInitialize': wait_count -= 1 if contact_header is None: try: contact_uri = self.account.contact[self.route] except KeyError, e: for stream in self.proposed_streams: notification_center.remove_observer(self, sender=stream) stream.deactivate() stream.end() self._fail(originator='local', code=480, reason=sip_status_messages[480], error=str(e)) return else: contact_header = ContactHeader(contact_uri) local_ip = contact_header.uri.host local_sdp = SDPSession(local_ip, connection=SDPConnection(local_ip), name=settings.user_agent) stun_addresses = [] for index, stream in enumerate(self.proposed_streams): stream.index = index media = stream.get_local_media(for_offer=True) local_sdp.media.append(media) stun_addresses.extend((value.split(' ', 5)[4] for value in media.attributes.getall('candidate') if value.startswith('S '))) if stun_addresses: local_sdp.connection.address = stun_addresses[0] route_header = RouteHeader(self.route.get_uri()) if is_focus: contact_header.parameters['isfocus'] = None if self.subject: extra_headers.append(SubjectHeader(self.subject)) self._invitation.send_invite(to_header.uri, from_header, to_header, route_header, contact_header, local_sdp, extra_headers=extra_headers) try: with api.timeout(settings.sip.invite_timeout): while True: notification = self._channel.wait() if notification.name == 'SIPInvitationGotSDPUpdate': if notification.data.succeeded: local_sdp = notification.data.local_sdp remote_sdp = notification.data.remote_sdp break else: for stream in self.proposed_streams: notification_center.remove_observer(self, sender=stream) stream.deactivate() stream.end() self._fail(originator='remote', code=received_code, reason=received_reason, error='SDP negotiation failed: %s' % notification.data.error) return elif notification.name == 'SIPInvitationChangedState': if notification.data.state == 'early': if notification.data.code == 180: notification_center.post_notification('SIPSessionGotRingIndication', self, ) notification_center.post_notification('SIPSessionGotProvisionalResponse', self, NotificationData(code=notification.data.code, reason=notification.data.reason)) elif notification.data.state == 'connecting': received_code = notification.data.code received_reason = notification.data.reason elif notification.data.state == 'connected': if not connected: connected = True notification_center.post_notification('SIPSessionDidProcessTransaction', self, NotificationData(originator='local', method='INVITE', code=received_code, reason=received_reason)) else: unhandled_notifications.append(notification) elif notification.data.state == 'disconnected': raise InvitationDisconnectedError(notification.sender, notification.data) except api.TimeoutError: self.greenlet = None self.end() return notification_center.post_notification('SIPSessionWillStart', self) stream_map = dict((stream.index, stream) for stream in self.proposed_streams) for index, local_media in enumerate(local_sdp.media): remote_media = remote_sdp.media[index] stream = stream_map[index] if remote_media.port: stream.start(local_sdp, remote_sdp, index) else: notification_center.remove_observer(self, sender=stream) self.proposed_streams.remove(stream) del stream_map[stream.index] stream.deactivate() stream.end() removed_streams = [stream for stream in self.proposed_streams if stream.index >= len(local_sdp.media)] for stream in removed_streams: notification_center.remove_observer(self, sender=stream) self.proposed_streams.remove(stream) del stream_map[stream.index] stream.deactivate() stream.end() invitation_notifications = [] with api.timeout(self.media_stream_timeout): wait_count = len(self.proposed_streams) while wait_count > 0: notification = self._channel.wait() if notification.name == 'MediaStreamDidStart': wait_count -= 1 elif notification.name == 'SIPInvitationChangedState': invitation_notifications.append(notification) [self._channel.send(notification) for notification in invitation_notifications] while not connected or self._channel: notification = self._channel.wait() if notification.name == 'SIPInvitationChangedState': if notification.data.state == 'early': if notification.data.code == 180: notification_center.post_notification('SIPSessionGotRingIndication', self) notification_center.post_notification('SIPSessionGotProvisionalResponse', self, NotificationData(code=notification.data.code, reason=notification.data.reason)) elif notification.data.state == 'connecting': received_code = notification.data.code received_reason = notification.data.reason elif notification.data.state == 'connected': if not connected: connected = True notification_center.post_notification('SIPSessionDidProcessTransaction', self, NotificationData(originator='local', method='INVITE', code=received_code, reason=received_reason)) else: unhandled_notifications.append(notification) elif notification.data.state == 'disconnected': raise InvitationDisconnectedError(notification.sender, notification.data) except (MediaStreamDidFailError, api.TimeoutError), e: for stream in self.proposed_streams: notification_center.remove_observer(self, sender=stream) stream.deactivate() stream.end() if isinstance(e, api.TimeoutError): error = 'media stream timed out while starting' else: error = 'media stream failed: %s' % e.data.reason self._fail(originator='local', code=received_code, reason=received_reason, error=error) except InvitationDisconnectedError, e: notification_center.remove_observer(self, sender=self._invitation) for stream in self.proposed_streams: notification_center.remove_observer(self, sender=stream) stream.deactivate() stream.end() self.state = 'terminated' # As it weird as it may sound, PJSIP accepts a BYE even without receiving a final response to the INVITE if e.data.prev_state in ('connecting', 'connected') or getattr(e.data, 'method', None) == 'BYE': notification_center.post_notification('SIPSessionWillEnd', self, NotificationData(originator=e.data.originator)) if e.data.originator == 'remote': notification_center.post_notification('SIPSessionDidProcessTransaction', self, NotificationData(originator='remote', method=e.data.method, code=200, reason=sip_status_messages[200])) self.end_time = datetime.now() notification_center.post_notification('SIPSessionDidEnd', self, NotificationData(originator=e.data.originator, end_reason=e.data.disconnect_reason)) else: if e.data.originator == 'remote': notification_center.post_notification('SIPSessionDidProcessTransaction', self, NotificationData(originator='local', method='INVITE', code=e.data.code, reason=e.data.reason)) if e.data.originator == 'remote': code = e.data.code reason = e.data.reason elif e.data.disconnect_reason == 'timeout': code = 408 reason = 'timeout' else: code = 0 reason = None if e.data.originator == 'remote' and code // 100 == 3: redirect_identities = e.data.headers.get('Contact', []) else: redirect_identities = None notification_center.post_notification('SIPSessionDidFail', self, NotificationData(originator=e.data.originator, code=code, reason=reason, failure_reason=e.data.disconnect_reason, redirect_identities=redirect_identities)) self.greenlet = None except SIPCoreError, e: for stream in self.proposed_streams: notification_center.remove_observer(self, sender=stream) stream.deactivate() stream.end() self._fail(originator='local', code=received_code, reason=received_reason, error='SIP core error: %s' % str(e)) else: self.greenlet = None self.state = 'connected' self.streams = self.proposed_streams self.proposed_streams = None self.start_time = datetime.now() notification_center.post_notification('SIPSessionDidStart', self, NotificationData(streams=self.streams)) for notification in unhandled_notifications: self.handle_notification(notification) if self._hold_in_progress: self._send_hold() class SessionManager(object): __metaclass__ = Singleton implements(IObserver) def __init__(self): self.sessions = [] self.state = None self._channel = coros.queue() def start(self): self.state = 'starting' notification_center = NotificationCenter() notification_center.post_notification('SIPSessionManagerWillStart', sender=self) notification_center.add_observer(self, 'SIPInvitationChangedState') notification_center.add_observer(self, 'SIPSessionNewIncoming') notification_center.add_observer(self, 'SIPSessionNewOutgoing') notification_center.add_observer(self, 'SIPSessionDidFail') notification_center.add_observer(self, 'SIPSessionDidEnd') self.state = 'started' notification_center.post_notification('SIPSessionManagerDidStart', sender=self) def stop(self): self.state = 'stopping' notification_center = NotificationCenter() notification_center.post_notification('SIPSessionManagerWillEnd', sender=self) for session in self.sessions: session.end() while self.sessions: self._channel.wait() notification_center.remove_observer(self, 'SIPInvitationChangedState') notification_center.remove_observer(self, 'SIPSessionNewIncoming') notification_center.remove_observer(self, 'SIPSessionNewOutgoing') notification_center.remove_observer(self, 'SIPSessionDidFail') notification_center.remove_observer(self, 'SIPSessionDidEnd') self.state = 'stopped' notification_center.post_notification('SIPSessionManagerDidEnd', sender=self) @run_in_twisted_thread def handle_notification(self, notification): if notification.name == 'SIPInvitationChangedState' and notification.data.state == 'incoming': account = AccountManager().sylkserver_account notification.sender.send_response(100) session = ServerSession(account) session.init_incoming(notification.sender, notification.data) elif notification.name in ('SIPSessionNewIncoming', 'SIPSessionNewOutgoing'): self.sessions.append(notification.sender) elif notification.name in ('SIPSessionDidFail', 'SIPSessionDidEnd'): self.sessions.remove(notification.sender) if self.state == 'stopping': self._channel.send(notification)