Coverage for coherence/upnp/core/ssdp.py : 58%

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# Licensed under the MIT license # http://opensource.org/licenses/mit-license.php
# Copyright 2005, Tim Potter <tpot@samba.org> # Copyright 2006 John-Mark Gurney <gurney_j@resnet.uroegon.edu> # Copyright (C) 2006 Fluendo, S.A. (www.fluendo.com). # Copyright 2006,2007,2008,2009 Frank Scholz <coherence@beebits.net> # # Implementation of a SSDP server under Twisted Python. #
"""A class implementing a SSDP server. The notifyReceived and searchReceived methods are called when the appropriate type of datagram is received by the server."""
# Create SSDP server self.port = reactor.listenMulticast( SSDP_PORT, self, listenMultiple=True, interface=interface)
self.port.joinGroup(SSDP_ADDR, interface=interface)
self.resend_notify_loop = task.LoopingCall(self.resendNotify) self.resend_notify_loop.start(777.0, now=False)
self.check_valid_loop = task.LoopingCall(self.check_valid) self.check_valid_loop.start(333.0, now=False)
call.cancel() if self.resend_notify_loop.running: self.resend_notify_loop.stop() if self.check_valid_loop.running: self.check_valid_loop.stop() '''Make sure we send out the byebye notifications.''' for st in self.known: if self.known[st]['MANIFESTATION'] == 'local': self.doByebye(st)
"""Handle a received multicast datagram.""" except ValueError as err: print(err) print('Arggg,', data) import pdb pdb.set_trace()
# TODO: Find and fix where some of the header's keys are quoted. # This hack, allows to fix the quoted keys for the headers, introduced # at some point of the source code. I notice that the issue appears # when using FSStore plugin. But where? s = s[1:] s = s[:-1] dict([(fix_string(x[0]), fix_string(x[1], to_lower=False)) for x in headers])
cmd[0], cmd[1], host, port)) # SSDP discovery self.discoveryRequest(headers, (host, port)) # SSDP presence else: self.warning('Unknown SSDP command {} {}'.format(cmd[0], cmd[1]))
# make raw data available # send out the signal after we had a chance to register the device
server=SERVER_ID, cache_control='max-age=1800', silent=False, host=None): """Register a service or device that this SSDP server will respond to."""
st, location, manifestation))
'Coherence.UPnP.SSDP.new_device', None, device_type=st, infos=self.known[usn]) # self.callback("new_device", st, self.known[usn]) # print('\t - ok all') except Exception as err: self.error('\t -> Error on registering service: ' '{} [error: "{}"]'.format(manifestation, err))
self.msg("Un-registering {}".format(usn)) st = self.known[usn]['ST'] if st == 'upnp:rootdevice': louie.send( 'Coherence.UPnP.SSDP.removed_device', None, device_type=st, infos=self.known[usn]) # self.callback("removed_device", st, self.known[usn])
del self.known[usn]
"""Process a presence announcement. We just remember the details of the SSDP service announced.""" host, port, headers['nt']))
headers['location'], headers['server'], headers['cache-control'], host=host) elif headers['nts'] == 'ssdp:byebye': if self.isKnown(headers['usn']): self.unRegister(headers['usn']) else: self.warning('Unknown subtype {} for notification type {}'.format( headers['nts'], headers['nt'])) 'Notify %s for %s' % (headers['nts'], headers['usn']))
self.info('send discovery response delayed by ' '{} for {} to {}'.format(delay, usn, destination)) r = response if isinstance(response, bytes) else \ response.encode('ascii') d = destination if isinstance(destination, bytes) else \ destination.encode('ascii') try: self.transport.write(r, d) except (AttributeError, socket.error) as msg: self.info('failure sending out byebye notification: ' '{}'.format(msg))
"""Process a discovery request. The response must be sent to the address specified by (host, port).""" (host, port) = xxx_todo_changeme2 self.info('Discovery request from ({},{}) for {}'.format( host, port, headers['st'])) self.info('Discovery request for {}'.format(headers['st']))
louie.send( 'Coherence.UPnP.Log', None, 'SSDP', host, 'M-Search for %s' % headers['st'])
# Do we know about this service? for i in list(self.known.values()): if i['MANIFESTATION'] == 'remote': continue if (headers['st'] == 'ssdp:all' and i['SILENT'] is True): continue if (i['ST'] == headers['st'] or headers['st'] == 'ssdp:all'): response = [] response.append(b'HTTP/1.1 200 OK')
for k, v in list(i.items()): if k == 'USN': usn = v if k not in ('MANIFESTATION', 'SILENT', 'HOST'): response.append(b'%r: %r' % (k, v)) response.append(b'DATE: %r' % datetimeToString())
response.extend((b'', b'')) delay = random.randint(0, int(headers['mx']))
reactor.callLater( delay, self.send_it, b'\r\n'.join(response), (host, port), delay, usn)
"""Do notification"""
# self.info('\t - self.known[usn]: {}'.format(self.known[usn]))
'HOST: %s:%d' % (SSDP_ADDR, SSDP_PORT), 'NTS: ssdp:alive', ]
'%r: %r' % (k, v) for k, v in stcpy.items()]) r, self.transport)) 'trying to initialize a FakeDatagramTransport') except Exception as er: self.error('Cannot initialize transport: {}'.format(er)) except (AttributeError, socket.error) as msg: self.info('failure sending out alive notification: {}'.format(msg))
"""Do byebye"""
'HOST: %r:%r' % (SSDP_ADDR, SSDP_PORT), 'NTS: ssdp:byebye', ] '%r: %r' % (k, v) for k, v in stcpy.items()]) self.warning('transport not initialized...' 'trying to initialize a FakeDatagramTransport') self.transport = proto_helpers.FakeDatagramTransport() self.makeConnection(self.transport) except (AttributeError, socket.error) as msg: self.info( "failure sending out byebye notification: %r", msg) except KeyError as msg: self.debug("error building byebye notification: %r", msg)
for usn in self.known: if self.known[usn]['MANIFESTATION'] == 'local': self.doNotify(usn)
""" check if the discovered devices are still ok, or if we haven't received a new discovery response """ self.debug("Checking devices/services are still valid") removable = [] for usn in self.known: if self.known[usn]['MANIFESTATION'] != 'local': _, expiry = self.known[usn]['CACHE-CONTROL'].split('=') expiry = int(expiry) now = time.time() last_seen = self.known[usn]['last-seen'] self.debug('Checking if {} is still valid - last seen ' '{} (+{}), now {}'.format( self.known[usn]['USN'], last_seen, expiry, now)) if last_seen + expiry + 30 < now: self.debug('Expiring: {}'.format(self.known[usn])) if self.known[usn]['ST'] == 'upnp:rootdevice': louie.send( 'Coherence.UPnP.SSDP.removed_device', None, device_type=self.known[usn]['ST'], infos=self.known[usn]) removable.append(usn) while len(removable) > 0: usn = removable.pop(0) del self.known[usn]
callbacks = self._callbacks.get(name, []) if callback in callbacks: callbacks.remove(callback) self._callbacks[name] = callbacks
for callback in self._callbacks.get(name, []): callback(*args) |