110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
# -*- coding:utf-8 -*-
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## src/common/protocol/caps.py
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##
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## Copyright (C) 2009 Stephan Erb <steve-e AT h3c.de>
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##
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## 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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##
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"""
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Module containing the network portion of XEP-115 (Entity Capabilities)
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"""
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import logging
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log = logging.getLogger('gajim.c.p.caps')
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from common.xmpp import NS_CAPS
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from common import gajim
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from common import helpers
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class ConnectionCaps(object):
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def __init__(self, account, dispatch_event, capscache, client_caps_factory):
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self._account = account
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self._dispatch_event = dispatch_event
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self._capscache = capscache
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self._create_suitable_client_caps = client_caps_factory
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def _capsPresenceCB(self, con, presence):
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"""
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XMMPPY callback method to handle retrieved caps info
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"""
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try:
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jid = helpers.get_full_jid_from_iq(presence)
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except:
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log.info("Ignoring invalid JID in caps presenceCB")
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return
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client_caps = self._extract_client_caps_from_presence(presence)
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self._capscache.query_client_of_jid_if_unknown(self, jid, client_caps)
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self._update_client_caps_of_contact(jid, client_caps)
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self._dispatch_event('CAPS_RECEIVED', (jid,))
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def _extract_client_caps_from_presence(self, presence):
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caps_tag = presence.getTag('c', namespace=NS_CAPS)
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if caps_tag:
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hash_method, node, caps_hash = caps_tag['hash'], caps_tag['node'], caps_tag['ver']
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else:
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hash_method = node = caps_hash = None
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return self._create_suitable_client_caps(node, caps_hash, hash_method)
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def _update_client_caps_of_contact(self, jid, client_caps):
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contact = self._get_contact_or_gc_contact_for_jid(jid)
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if contact:
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contact.client_caps = client_caps
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else:
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log.info("Received Caps from unknown contact %s" % jid)
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def _get_contact_or_gc_contact_for_jid(self, jid):
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contact = gajim.contacts.get_contact_from_full_jid(self._account, jid)
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if contact is None:
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room_jid, nick = gajim.get_room_and_nick_from_fjid(jid)
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contact = gajim.contacts.get_gc_contact(self._account, room_jid, nick)
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return contact
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def _capsDiscoCB(self, jid, node, identities, features, dataforms):
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"""
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XMMPPY callback to update our caps cache with queried information after
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we have retrieved an unknown caps hash and issued a disco
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"""
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contact = self._get_contact_or_gc_contact_for_jid(jid)
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if not contact:
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log.info("Received Disco from unknown contact %s" % jid)
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return
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lookup = contact.client_caps.get_cache_lookup_strategy()
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cache_item = lookup(self._capscache)
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if cache_item.is_valid():
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return
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else:
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validate = contact.client_caps.get_hash_validation_strategy()
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hash_is_valid = validate(identities, features, dataforms)
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if hash_is_valid:
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cache_item.set_and_store(identities, features)
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else:
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node = caps_hash = hash_method = None
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contact.client_caps = self._create_suitable_client_caps(node,
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caps_hash, hash_method)
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log.warn("Computed and retrieved caps hash differ." +
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"Ignoring caps of contact %s" % contact.get_full_jid())
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self._dispatch_event('CAPS_RECEIVED', (jid,))
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# vim: se ts=3: |