306 lines
11 KiB
Python
306 lines
11 KiB
Python
# This file is part of Gajim.
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#
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# Gajim is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published
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# by the Free Software Foundation; version 3 only.
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#
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# Gajim is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
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# XEP-0030: Service Discovery
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import logging
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import weakref
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import nbxmpp
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from gajim.common import app
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from gajim.common import helpers
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from gajim.common.caps_cache import muc_caps_cache
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from gajim.common.nec import NetworkIncomingEvent
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from gajim.common.connection_handlers_events import InformationEvent
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log = logging.getLogger('gajim.c.m.discovery')
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class Discovery:
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def __init__(self, con):
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self._con = con
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self._account = con.name
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self.handlers = [
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('iq', self._answer_disco_info, 'get', nbxmpp.NS_DISCO_INFO),
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('iq', self._answer_disco_items, 'get', nbxmpp.NS_DISCO_ITEMS),
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]
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def disco_contact(self, jid, node=None):
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success_cb = self._con.get_module('Caps').contact_info_received
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self._disco(nbxmpp.NS_DISCO_INFO, jid, node, success_cb, None)
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def disco_items(self, jid, node=None, success_cb=None, error_cb=None):
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self._disco(nbxmpp.NS_DISCO_ITEMS, jid, node, success_cb, error_cb)
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def disco_info(self, jid, node=None, success_cb=None, error_cb=None):
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self._disco(nbxmpp.NS_DISCO_INFO, jid, node, success_cb, error_cb)
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def _disco(self, namespace, jid, node, success_cb, error_cb):
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if success_cb is None:
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raise ValueError('success_cb is required')
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if not app.account_is_connected(self._account):
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return
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iq = nbxmpp.Iq(typ='get', to=jid, queryNS=namespace)
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if node:
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iq.setQuerynode(node)
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log_str = 'Request info: %s %s'
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if namespace == nbxmpp.NS_DISCO_ITEMS:
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log_str = 'Request items: %s %s'
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log.info(log_str, jid, node or '')
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# Create weak references so we can pass GUI object methods
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weak_success_cb = weakref.WeakMethod(success_cb)
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if error_cb is not None:
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weak_error_cb = weakref.WeakMethod(error_cb)
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else:
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weak_error_cb = None
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self._con.connection.SendAndCallForResponse(
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iq, self._disco_response, {'success_cb': weak_success_cb,
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'error_cb': weak_error_cb})
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def _disco_response(self, _con, stanza, success_cb, error_cb):
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if not nbxmpp.isResultNode(stanza):
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if error_cb is not None:
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error_cb()(stanza.getFrom(), stanza.getError())
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else:
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log.info('Error: %s', stanza.getError())
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return
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from_ = stanza.getFrom()
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node = stanza.getQuerynode()
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if stanza.getQueryNS() == nbxmpp.NS_DISCO_INFO:
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identities, features, data, node = self.parse_info_response(stanza)
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success_cb()(from_, identities, features, data, node)
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elif stanza.getQueryNS() == nbxmpp.NS_DISCO_ITEMS:
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items = self.parse_items_response(stanza)
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success_cb()(from_, node, items)
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else:
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log.warning('Wrong query namespace: %s', stanza)
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@classmethod
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def parse_items_response(cls, stanza):
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payload = stanza.getQueryPayload()
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items = []
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for item in payload:
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# CDATA payload is not processed, only nodes
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if not isinstance(item, nbxmpp.simplexml.Node):
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continue
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attr = item.getAttrs()
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if 'jid' not in attr:
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log.warning('No jid attr in disco items: %s', stanza)
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continue
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try:
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attr['jid'] = helpers.parse_jid(attr['jid'])
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except helpers.InvalidFormat:
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log.warning('Invalid jid attr in disco items: %s', stanza)
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continue
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items.append(attr)
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return items
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@classmethod
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def parse_info_response(cls, stanza):
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identities, features, data, node = [], [], [], None
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query = stanza.getTag('query')
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node = query.getAttr('node')
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if not node:
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node = ''
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childs = stanza.getQueryChildren()
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if not childs:
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childs = []
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for i in childs:
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if i.getName() == 'identity':
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attr = {}
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for key in i.getAttrs().keys():
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attr[key] = i.getAttr(key)
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identities.append(attr)
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elif i.getName() == 'feature':
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var = i.getAttr('var')
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if var:
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features.append(var)
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elif i.getName() == 'x' and i.getNamespace() == nbxmpp.NS_DATA:
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data.append(nbxmpp.DataForm(node=i))
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return identities, features, data, node
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def discover_server_items(self):
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server = self._con.get_own_jid().getDomain()
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self.disco_items(server, success_cb=self._server_items_received)
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def _server_items_received(self, _from, _node, items):
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log.info('Server items received')
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for item in items:
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if 'node' in item:
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# Only disco components
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continue
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self.disco_info(item['jid'],
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success_cb=self._server_items_info_received)
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def _server_items_info_received(self, from_, *args):
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from_ = from_.getStripped()
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log.info('Server item info received: %s', from_)
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self._parse_transports(from_, *args)
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try:
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self._con.get_module('MUC').pass_disco(from_, *args)
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self._con.get_module('HTTPUpload').pass_disco(from_, *args)
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self._con.pass_bytestream_disco(from_, *args)
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except nbxmpp.NodeProcessed:
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pass
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app.nec.push_incoming_event(
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NetworkIncomingEvent('server-disco-received'))
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def discover_account_info(self):
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own_jid = self._con.get_own_jid().getStripped()
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self.disco_info(own_jid, success_cb=self._account_info_received)
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def _account_info_received(self, from_, *args):
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from_ = from_.getStripped()
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log.info('Account info received: %s', from_)
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self._con.get_module('MAM').pass_disco(from_, *args)
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self._con.get_module('PEP').pass_disco(from_, *args)
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self._con.get_module('PubSub').pass_disco(from_, *args)
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features = args[1]
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if 'urn:xmpp:pep-vcard-conversion:0' in features:
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self._con.avatar_conversion = True
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def discover_server_info(self):
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# Calling this method starts the connect_maschine()
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server = self._con.get_own_jid().getDomain()
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self.disco_info(server, success_cb=self._server_info_received)
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def _server_info_received(self, from_, *args):
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log.info('Server info received: %s', from_)
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self._con.get_module('SecLabels').pass_disco(from_, *args)
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self._con.get_module('Blocking').pass_disco(from_, *args)
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self._con.get_module('VCardTemp').pass_disco(from_, *args)
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self._con.get_module('Carbons').pass_disco(from_, *args)
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self._con.get_module('PrivacyLists').pass_disco(from_, *args)
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self._con.get_module('HTTPUpload').pass_disco(from_, *args)
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features = args[1]
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if nbxmpp.NS_REGISTER in features:
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self._con.register_supported = True
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if nbxmpp.NS_ADDRESS in features:
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self._con.addressing_supported = True
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self._con.connect_machine(restart=True)
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def _parse_transports(self, from_, identities, _features, _data, _node):
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for identity in identities:
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category = identity.get('category')
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if category not in ('gateway', 'headline'):
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continue
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transport_type = identity.get('type')
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log.info('Found transport: %s %s %s',
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from_, category, transport_type)
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jid = str(from_)
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if jid not in app.transport_type:
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app.transport_type[jid] = transport_type
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app.logger.save_transport_type(jid, transport_type)
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if transport_type in self._con.available_transports:
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self._con.available_transports[transport_type].append(jid)
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else:
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self._con.available_transports[transport_type] = [jid]
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def _answer_disco_items(self, _con, stanza):
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from_ = stanza.getFrom()
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log.info('Answer disco items to %s', from_)
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if self._con.get_module('AdHocCommands').command_items_query(stanza):
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raise nbxmpp.NodeProcessed
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node = stanza.getTagAttr('query', 'node')
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if node is None:
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result = stanza.buildReply('result')
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self._con.connection.send(result)
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raise nbxmpp.NodeProcessed
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if node == nbxmpp.NS_COMMANDS:
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self._con.get_module('AdHocCommands').command_list_query(stanza)
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raise nbxmpp.NodeProcessed
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def _answer_disco_info(self, _con, stanza):
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from_ = stanza.getFrom()
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log.info('Answer disco info %s', from_)
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if str(from_).startswith('echo.'):
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# Service that echos all stanzas, ignore it
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raise nbxmpp.NodeProcessed
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if self._con.get_module('AdHocCommands').command_info_query(stanza):
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raise nbxmpp.NodeProcessed
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node = stanza.getQuerynode()
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iq = stanza.buildReply('result')
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query = iq.setQuery()
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if node:
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query.setAttr('node', node)
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query.addChild('identity', attrs=app.gajim_identity)
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client_version = 'http://gajim.org#' + app.caps_hash[self._account]
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if node in (None, client_version):
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for feature in app.gajim_common_features:
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query.addChild('feature', attrs={'var': feature})
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for feature in app.gajim_optional_features[self._account]:
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query.addChild('feature', attrs={'var': feature})
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self._con.connection.send(iq)
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raise nbxmpp.NodeProcessed
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def disco_muc(self, jid, callback, update=False):
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if not app.account_is_connected(self._account):
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return
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if muc_caps_cache.is_cached(jid) and not update:
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callback()
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return
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iq = nbxmpp.Iq(typ='get', to=jid, queryNS=nbxmpp.NS_DISCO_INFO)
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log.info('Request MUC info %s', jid)
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self._con.connection.SendAndCallForResponse(
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iq, self._muc_info_response, {'callback': callback})
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@staticmethod
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def _muc_info_response(_con, stanza, callback):
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if not nbxmpp.isResultNode(stanza):
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error = stanza.getError()
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if error == 'item-not-found':
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# Groupchat does not exist
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log.info('MUC does not exist: %s', stanza.getFrom())
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callback()
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else:
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log.info('MUC disco error: %s', error)
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app.nec.push_incoming_event(
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InformationEvent(
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None, dialog_name='unable-join-groupchat', args=error))
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return
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log.info('MUC info received: %s', stanza.getFrom())
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muc_caps_cache.append(stanza)
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callback()
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def get_instance(*args, **kwargs):
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return Discovery(*args, **kwargs), 'Discovery'
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