gajim-plural/gajim/common/modules/security_labels.py

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2018-07-21 13:19:01 +02:00
# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
# XEP-0258: Security Labels in XMPP
import logging
import nbxmpp
from gajim.common import app
from gajim.common.nec import NetworkIncomingEvent
log = logging.getLogger('gajim.c.m.security_labels')
class SecLabels:
def __init__(self, con):
self._con = con
self._account = con.name
self.handlers = []
self._catalogs = {}
self.supported = False
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def pass_disco(self, from_, _identities, features, _data, _node):
if nbxmpp.NS_SECLABEL not in features:
return
self.supported = True
log.info('Discovered security labels: %s', from_)
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def request_catalog(self, jid):
server = app.get_jid_from_account(self._account).split("@")[1]
iq = nbxmpp.Iq(typ='get', to=server)
iq.addChild(name='catalog',
namespace=nbxmpp.NS_SECLABEL_CATALOG,
attrs={'to': jid})
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log.info('Request catalog: server: %s, to: %s', server, jid)
self._con.connection.SendAndCallForResponse(
iq, self._catalog_received)
def _catalog_received(self, stanza):
if not nbxmpp.isResultNode(stanza):
log.info('Error: %s', stanza.getError())
return
query = stanza.getTag('catalog', namespace=nbxmpp.NS_SECLABEL_CATALOG)
to = query.getAttr('to')
items = query.getTags('item')
labels = {}
label_list = []
default = None
for item in items:
label = item.getAttr('selector')
labels[label] = item.getTag('securitylabel')
label_list.append(label)
if item.getAttr('default') == 'true':
default = label
catalog = (labels, label_list, default)
self._catalogs[to] = catalog
log.info('Received catalog: %s', to)
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log.debug(catalog)
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app.nec.push_incoming_event(SecLabelCatalog(
None, account=self._account, jid=to, catalog=catalog))
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def get_catalog(self, jid):
return self._catalogs.get(jid)
def parse_securitylabel(stanza):
seclabel = stanza.getTag('securitylabel', namespace=nbxmpp.NS_SECLABEL)
if seclabel is None:
return None
return seclabel.getTag('displaymarking')
class SecLabelCatalog(NetworkIncomingEvent):
name = 'sec-catalog-received'
def get_instance(*args, **kwargs):
return SecLabels(*args, **kwargs), 'SecLabels'