def send_publish(self, uri, body):
if self.outbound_proxy is None:
return
uri = self.sip_prefix_re.sub('', uri)
publication = Publication(FromHeader(SIPURI(uri)),
"xcap-diff",
"application/xcap-diff+xml",
duration=0,
extra_headers=[Header('Thor-Scope', 'publish-xcap')])
NotificationCenter().add_observer(self, sender=publication)
route_header = RouteHeader(SIPURI(host=self.outbound_proxy.host, port=self.outbound_proxy.port, parameters=dict(transport=self.outbound_proxy.transport)))
publication.publish(body, route_header, timeout=5)
def send_publish(self, uri, body):
uri = re.sub("^(sip:|sips:)", "", uri)
destination_node = self.provisioning.lookup(uri)
if destination_node is not None:
# TODO: add configuration settings for SIP transport. -Saul
publication = Publication(FromHeader(SIPURI(uri)),
"xcap-diff",
"application/xcap-diff+xml",
duration=0,
extra_headers=[Header('Thor-Scope', 'publish-xcap')])
NotificationCenter().add_observer(self, sender=publication)
route_header = RouteHeader(SIPURI(host=str(destination_node), port='5060', parameters=dict(transport='udp')))
publication.publish(body, route_header, timeout=5)
def send_publish(self, uri, body):
if self.outbound_proxy is None:
return
uri = self.sip_prefix_re.sub('', uri)
publication = Publication(
FromHeader(SIPURI(uri)),
"xcap-diff",
"application/xcap-diff+xml",
duration=0,
extra_headers=[Header('Thor-Scope', 'publish-xcap')])
NotificationCenter().add_observer(self, sender=publication)
route_header = RouteHeader(
SIPURI(host=self.outbound_proxy.host,
port=self.outbound_proxy.port,
parameters=dict(transport=self.outbound_proxy.transport)))
publication.publish(body, route_header, timeout=5)
def send_publish(self, uri, body):
uri = re.sub("^(sip:|sips:)", "", uri)
destination_node = self.provisioning.lookup(uri)
if destination_node is not None:
# TODO: add configuration settings for SIP transport. -Saul
publication = Publication(
FromHeader(SIPURI(uri)),
"xcap-diff",
"application/xcap-diff+xml",
duration=0,
extra_headers=[Header('Thor-Scope', 'publish-xcap')])
NotificationCenter().add_observer(self, sender=publication)
route_header = RouteHeader(
SIPURI(host=str(destination_node),
port='5060',
parameters=dict(transport='udp')))
publication.publish(body, route_header, timeout=5)
def _CH_publish(self, command):
if command.state is None or self._publication is None and command.state is SameState:
command.signal()
return
notification_center = NotificationCenter()
settings = SIPSimpleSettings()
if self._publication_timer is not None and self._publication_timer.active(
):
self._publication_timer.cancel()
self._publication_timer = None
if self._publication is None:
duration = command.refresh_interval or self.account.sip.publish_interval
from_header = FromHeader(self.account.uri,
self.account.display_name)
self._publication = Publication(
from_header,
self.event,
self.payload_type.content_type,
credentials=self.account.credentials,
duration=duration,
extra_headers=self.extra_headers)
notification_center.add_observer(self, sender=self._publication)
notification_center.post_notification(
self.__class__.__name__ + 'WillPublish',
sender=self,
data=NotificationData(state=command.state, duration=duration))
else:
notification_center.post_notification(
self.__class__.__name__ + 'WillRefresh',
sender=self,
data=NotificationData(state=command.state))
try:
# Lookup routes
valid_transports = self.__transports__.intersection(
settings.sip.transport_list)
if self.account.sip.outbound_proxy is not None and self.account.sip.outbound_proxy.transport in valid_transports:
uri = SIPURI(host=self.account.sip.outbound_proxy.host,
port=self.account.sip.outbound_proxy.port,
parameters={
'transport':
self.account.sip.outbound_proxy.transport
})
else:
uri = SIPURI(host=self.account.id.domain)
lookup = DNSLookup()
try:
routes = lookup.lookup_sip_proxy(uri, valid_transports).wait()
except DNSLookupError, e:
retry_after = random.uniform(self._dns_wait,
2 * self._dns_wait)
self._dns_wait = limit(2 * self._dns_wait, max=30)
raise PublicationError('DNS lookup failed: %s' % e,
retry_after=retry_after)
else:
class Publisher(object, metaclass=ABCMeta):
__nickname__ = PublisherNickname()
__transports__ = frozenset(['tls', 'tcp', 'udp'])
def __init__(self, account):
self.account = account
self.started = False
self.active = False
self.publishing = False
self._lock = Lock()
self._command_proc = None
self._command_channel = coros.queue()
self._data_channel = coros.queue()
self._publication = None
self._dns_wait = 1
self._publish_wait = 1
self._publication_timer = None
self.__dict__['state'] = None
@abstractproperty
def event(self):
return None
@abstractproperty
def payload_type(self):
return None
@property
def extra_headers(self):
return []
@property
def state(self):
return self.__dict__['state']
@state.setter
def state(self, state):
if state is not None and not isinstance(state, self.payload_type.root_element):
raise ValueError("state must be a %s document or None" % self.payload_type.root_element.__name__)
with self._lock:
old_state = self.__dict__['state']
self.__dict__['state'] = state
if state == old_state:
return
self._publish(state)
def start(self):
if self.started:
return
self.started = True
notification_center = NotificationCenter()
notification_center.add_observer(self, sender=self)
notification_center.post_notification(self.__class__.__name__ + 'WillStart', sender=self)
notification_center.add_observer(self, name='CFGSettingsObjectDidChange', sender=self.account)
notification_center.add_observer(self, name='CFGSettingsObjectDidChange', sender=SIPSimpleSettings())
notification_center.add_observer(self, name='NetworkConditionsDidChange')
self._command_proc = proc.spawn(self._run)
notification_center.post_notification(self.__class__.__name__ + 'DidStart', sender=self)
notification_center.remove_observer(self, sender=self)
def stop(self):
if not self.started:
return
self.started = False
self.active = False
notification_center = NotificationCenter()
notification_center.add_observer(self, sender=self)
notification_center.post_notification(self.__class__.__name__ + 'WillEnd', sender=self)
notification_center.remove_observer(self, name='CFGSettingsObjectDidChange', sender=self.account)
notification_center.remove_observer(self, name='CFGSettingsObjectDidChange', sender=SIPSimpleSettings())
notification_center.remove_observer(self, name='NetworkConditionsDidChange')
command = Command('terminate')
self._command_channel.send(command)
command.wait()
self._command_proc = None
notification_center.post_notification(self.__class__.__name__ + 'DidDeactivate', sender=self)
notification_center.post_notification(self.__class__.__name__ + 'DidEnd', sender=self)
notification_center.remove_observer(self, sender=self)
def activate(self):
if not self.started:
raise RuntimeError("not started")
self.active = True
self._command_channel.send(Command('publish', state=self.state))
notification_center = NotificationCenter()
notification_center.post_notification(self.__class__.__name__ + 'DidActivate', sender=self)
def deactivate(self):
if not self.started:
raise RuntimeError("not started")
self.active = False
self._command_channel.send(Command('unpublish'))
notification_center = NotificationCenter()
notification_center.post_notification(self.__class__.__name__ + 'DidDeactivate', sender=self)
@run_in_twisted_thread
def _publish(self, state):
if not self.active:
return
if state is None:
self._command_channel.send(Command('unpublish'))
else:
self._command_channel.send(Command('publish', state=state))
def _run(self):
while True:
command = self._command_channel.wait()
handler = getattr(self, '_CH_%s' % command.name)
handler(command)
def _CH_publish(self, command):
if command.state is None or self._publication is None and command.state is SameState:
command.signal()
return
notification_center = NotificationCenter()
settings = SIPSimpleSettings()
if self._publication_timer is not None and self._publication_timer.active():
self._publication_timer.cancel()
self._publication_timer = None
if self._publication is None:
duration = command.refresh_interval or self.account.sip.publish_interval
from_header = FromHeader(self.account.uri, self.account.display_name)
self._publication = Publication(from_header, self.event, self.payload_type.content_type, credentials=self.account.credentials, duration=duration, extra_headers=self.extra_headers)
notification_center.add_observer(self, sender=self._publication)
notification_center.post_notification(self.__class__.__name__ + 'WillPublish', sender=self, data=NotificationData(state=command.state, duration=duration))
else:
notification_center.post_notification(self.__class__.__name__ + 'WillRefresh', sender=self, data=NotificationData(state=command.state))
try:
if Host.default_ip is None:
raise PublicationError('No IP address', retry_after=60)
# Lookup routes
valid_transports = self.__transports__.intersection(settings.sip.transport_list)
if self.account.sip.outbound_proxy is not None and self.account.sip.outbound_proxy.transport in valid_transports:
uri = SIPURI(host=self.account.sip.outbound_proxy.host, port=self.account.sip.outbound_proxy.port, parameters={'transport': self.account.sip.outbound_proxy.transport})
else:
uri = SIPURI(host=self.account.id.domain)
lookup = DNSLookup()
try:
routes = lookup.lookup_sip_proxy(uri, valid_transports, tls_name=self.account.sip.tls_name).wait()
except DNSLookupError as e:
retry_after = random.uniform(self._dns_wait, 2*self._dns_wait)
self._dns_wait = limit(2*self._dns_wait, max=30)
raise PublicationError('DNS lookup failed: %s' % e, retry_after=retry_after)
else:
self._dns_wait = 1
body = None if command.state is SameState else command.state.toxml()
# Publish by trying each route in turn
publish_timeout = time() + 30
for route in routes:
if Host.default_ip is None:
raise PublicationError('No IP address', retry_after=60)
remaining_time = publish_timeout-time()
if remaining_time > 0:
try:
try:
self._publication.publish(body, RouteHeader(route.uri), timeout=limit(remaining_time, min=1, max=10))
except ValueError as e: # this happens for an initial PUBLISH with body=None
raise PublicationError(str(e), retry_after=0)
except PublicationETagError:
state = self.state # access self.state only once to avoid race conditions
if state is not None:
self._publication.publish(state.toxml(), RouteHeader(route.uri), timeout=limit(remaining_time, min=1, max=10))
else:
command.signal()
return
except SIPCoreError:
raise PublicationError('Internal error', retry_after=5)
try:
while True:
notification = self._data_channel.wait()
if notification.name == 'SIPPublicationDidSucceed':
break
if notification.name == 'SIPPublicationDidEnd':
raise PublicationError('Publication expired', retry_after=random.uniform(60, 120)) # publication expired while we were trying to re-publish
except SIPPublicationDidFail as e:
if e.data.code == 407:
# Authentication failed, so retry the publication in some time
raise PublicationError('Authentication failed', retry_after=random.uniform(60, 120))
elif e.data.code == 412:
raise PublicationError('Conditional request failed', retry_after=0)
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 > self.account.sip.publish_interval:
refresh_interval = e.data.min_expires
else:
refresh_interval = None
raise PublicationError('Interval too short', retry_after=random.uniform(60, 120), refresh_interval=refresh_interval)
elif e.data.code in (405, 406, 489):
raise PublicationError('Method or event not supported', retry_after=3600)
else:
# Otherwise just try the next route
continue
else:
self.publishing = True
self._publish_wait = 1
command.signal()
break
else:
# There are no more routes to try, reschedule the publication
retry_after = random.uniform(self._publish_wait, 2*self._publish_wait)
self._publish_wait = limit(self._publish_wait*2, max=30)
raise PublicationError('No more routes to try', retry_after=retry_after)
except PublicationError as e:
self.publishing = False
notification_center.remove_observer(self, sender=self._publication)
def publish(e):
if self.active:
self._command_channel.send(Command('publish', event=command.event, state=self.state, refresh_interval=e.refresh_interval))
else:
command.signal()
self._publication_timer = None
self._publication_timer = reactor.callLater(e.retry_after, publish, e)
self._publication = None
notification_center.post_notification(self.__nickname__ + 'PublicationDidFail', sender=self, data=NotificationData(reason=e.error))
else:
notification_center.post_notification(self.__nickname__ + 'PublicationDidSucceed', sender=self)
def _CH_unpublish(self, command):
# Cancel any timer which would restart the publication process
if self._publication_timer is not None and self._publication_timer.active():
self._publication_timer.cancel()
self._publication_timer = None
publishing = self.publishing
self.publishing = False
if self._publication is not None:
notification_center = NotificationCenter()
if publishing:
self._publication.end(timeout=2)
try:
while True:
notification = self._data_channel.wait()
if notification.name == 'SIPPublicationDidEnd':
break
except (SIPPublicationDidFail, SIPPublicationDidNotEnd):
notification_center.post_notification(self.__nickname__ + 'PublicationDidNotEnd', sender=self)
else:
notification_center.post_notification(self.__nickname__ + 'PublicationDidEnd', sender=self)
notification_center.remove_observer(self, sender=self._publication)
self._publication = None
command.signal()
def _CH_terminate(self, command):
self._CH_unpublish(command)
raise proc.ProcExit
@run_in_twisted_thread
def handle_notification(self, notification):
handler = getattr(self, '_NH_%s' % notification.name, Null)
handler(notification)
def _NH_SIPPublicationDidSucceed(self, notification):
if notification.sender is self._publication:
self._data_channel.send(notification)
def _NH_SIPPublicationDidFail(self, notification):
if notification.sender is self._publication:
self._data_channel.send_exception(SIPPublicationDidFail(notification.data))
def _NH_SIPPublicationDidEnd(self, notification):
if notification.sender is self._publication:
self._data_channel.send(notification)
def _NH_SIPPublicationDidNotEnd(self, notification):
if notification.sender is self._publication:
self._data_channel.send_exception(SIPPublicationDidNotEnd(notification.data))
def _NH_SIPPublicationWillExpire(self, notification):
if notification.sender is self._publication:
self._publish(SameState)
@run_in_green_thread
def _NH_CFGSettingsObjectDidChange(self, notification):
if not self.started:
return
if 'enabled' in notification.data.modified:
return # global account activation is handled separately by the account itself
elif 'presence.enabled' in notification.data.modified:
if self.account.presence.enabled:
self.activate()
else:
self.deactivate()
elif self.active and {'__id__', 'auth.password', 'auth.username', 'sip.outbound_proxy', 'sip.transport_list', 'sip.publish_interval'}.intersection(notification.data.modified):
self._command_channel.send(Command('unpublish'))
self._command_channel.send(Command('publish', state=self.state))
def _NH_NetworkConditionsDidChange(self, notification):
if self.active:
self._command_channel.send(Command('unpublish'))
self._command_channel.send(Command('publish', state=self.state))
def _CH_publish(self, command):
if command.state is None or self._publication is None and command.state is SameState:
command.signal()
return
notification_center = NotificationCenter()
settings = SIPSimpleSettings()
if self._publication_timer is not None and self._publication_timer.active():
self._publication_timer.cancel()
self._publication_timer = None
if self._publication is None:
duration = command.refresh_interval or self.account.sip.publish_interval
from_header = FromHeader(self.account.uri, self.account.display_name)
self._publication = Publication(from_header, self.event, self.payload_type.content_type, credentials=self.account.credentials, duration=duration, extra_headers=self.extra_headers)
notification_center.add_observer(self, sender=self._publication)
notification_center.post_notification(self.__class__.__name__ + 'WillPublish', sender=self, data=NotificationData(state=command.state, duration=duration))
else:
notification_center.post_notification(self.__class__.__name__ + 'WillRefresh', sender=self, data=NotificationData(state=command.state))
try:
if Host.default_ip is None:
raise PublicationError('No IP address', retry_after=60)
# Lookup routes
valid_transports = self.__transports__.intersection(settings.sip.transport_list)
if self.account.sip.outbound_proxy is not None and self.account.sip.outbound_proxy.transport in valid_transports:
uri = SIPURI(host=self.account.sip.outbound_proxy.host, port=self.account.sip.outbound_proxy.port, parameters={'transport': self.account.sip.outbound_proxy.transport})
else:
uri = SIPURI(host=self.account.id.domain)
lookup = DNSLookup()
try:
routes = lookup.lookup_sip_proxy(uri, valid_transports, tls_name=self.account.sip.tls_name).wait()
except DNSLookupError as e:
retry_after = random.uniform(self._dns_wait, 2*self._dns_wait)
self._dns_wait = limit(2*self._dns_wait, max=30)
raise PublicationError('DNS lookup failed: %s' % e, retry_after=retry_after)
else:
self._dns_wait = 1
body = None if command.state is SameState else command.state.toxml()
# Publish by trying each route in turn
publish_timeout = time() + 30
for route in routes:
if Host.default_ip is None:
raise PublicationError('No IP address', retry_after=60)
remaining_time = publish_timeout-time()
if remaining_time > 0:
try:
try:
self._publication.publish(body, RouteHeader(route.uri), timeout=limit(remaining_time, min=1, max=10))
except ValueError as e: # this happens for an initial PUBLISH with body=None
raise PublicationError(str(e), retry_after=0)
except PublicationETagError:
state = self.state # access self.state only once to avoid race conditions
if state is not None:
self._publication.publish(state.toxml(), RouteHeader(route.uri), timeout=limit(remaining_time, min=1, max=10))
else:
command.signal()
return
except SIPCoreError:
raise PublicationError('Internal error', retry_after=5)
try:
while True:
notification = self._data_channel.wait()
if notification.name == 'SIPPublicationDidSucceed':
break
if notification.name == 'SIPPublicationDidEnd':
raise PublicationError('Publication expired', retry_after=random.uniform(60, 120)) # publication expired while we were trying to re-publish
except SIPPublicationDidFail as e:
if e.data.code == 407:
# Authentication failed, so retry the publication in some time
raise PublicationError('Authentication failed', retry_after=random.uniform(60, 120))
elif e.data.code == 412:
raise PublicationError('Conditional request failed', retry_after=0)
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 > self.account.sip.publish_interval:
refresh_interval = e.data.min_expires
else:
refresh_interval = None
raise PublicationError('Interval too short', retry_after=random.uniform(60, 120), refresh_interval=refresh_interval)
elif e.data.code in (405, 406, 489):
raise PublicationError('Method or event not supported', retry_after=3600)
else:
# Otherwise just try the next route
continue
else:
self.publishing = True
self._publish_wait = 1
command.signal()
break
else:
# There are no more routes to try, reschedule the publication
retry_after = random.uniform(self._publish_wait, 2*self._publish_wait)
self._publish_wait = limit(self._publish_wait*2, max=30)
raise PublicationError('No more routes to try', retry_after=retry_after)
except PublicationError as e:
self.publishing = False
notification_center.remove_observer(self, sender=self._publication)
def publish(e):
if self.active:
self._command_channel.send(Command('publish', event=command.event, state=self.state, refresh_interval=e.refresh_interval))
else:
command.signal()
self._publication_timer = None
self._publication_timer = reactor.callLater(e.retry_after, publish, e)
self._publication = None
notification_center.post_notification(self.__nickname__ + 'PublicationDidFail', sender=self, data=NotificationData(reason=e.error))
else:
notification_center.post_notification(self.__nickname__ + 'PublicationDidSucceed', sender=self)
