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diff --git a/sylk/applications/xmppgateway/presence.py b/sylk/applications/xmppgateway/presence.py
index 959c49d..5ba1ded 100644
--- a/sylk/applications/xmppgateway/presence.py
+++ b/sylk/applications/xmppgateway/presence.py
@@ -1,480 +1,480 @@
# 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 eventlet 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 sipsimple.util import TimestampedNotificationData
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 import AvailabilityPresence, XMPPSubscription, XMPPIncomingSubscription
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, data=TimestampedNotificationData())
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, data=TimestampedNotificationData())
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)
- device_id = pidf.DeviceID(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, device_id=device_id)
+ 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, data=TimestampedNotificationData())
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, data=TimestampedNotificationData())
@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().default_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:
try:
contact_uri = account.contact[route]
except KeyError:
continue
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()),
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 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

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