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# Copyright (C) 2019 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# This program 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; either version 3
# of the License, or (at your option) any later version.
#
# This program 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 this program; If not, see <http://www.gnu.org/licenses/>.
import time
import logging
from nbxmpp.protocol import Iq
from nbxmpp.protocol import NS_DISCO_INFO
from nbxmpp.protocol import NS_DISCO_ITEMS
from nbxmpp.protocol import NS_DATA
from nbxmpp.protocol import isResultNode
from nbxmpp.modules.dataforms import extend_form
from nbxmpp.structs import DiscoIdentity
from nbxmpp.structs import DiscoInfo
from nbxmpp.structs import DiscoItems
from nbxmpp.structs import DiscoItem
from nbxmpp.util import call_on_response
from nbxmpp.util import callback
from nbxmpp.util import raise_error
log = logging.getLogger('nbxmpp.m.discovery')
class Discovery:
def __init__(self, client):
self._client = client
self.handlers = []
@call_on_response('_disco_info_received')
def disco_info(self, jid, node=None):
log.info('Disco info: %s, node: %s', jid, node)
return get_disco_request(NS_DISCO_INFO, jid, node)
@callback
def _disco_info_received(self, stanza):
if not isResultNode(stanza):
return raise_error(log.info, stanza)
return parse_disco_info(stanza)
@call_on_response('_disco_items_received')
def disco_items(self, jid, node=None):
log.info('Disco items: %s, node: %s', jid, node)
return get_disco_request(NS_DISCO_ITEMS, jid, node)
@callback
def _disco_items_received(self, stanza):
if not isResultNode(stanza):
return raise_error(log.info, stanza)
return parse_disco_items(stanza)
def parse_disco_info(stanza, timestamp=None):
idenities = []
features = []
dataforms = []
if timestamp is None:
timestamp = time.time()
query = stanza.getQuery()
for node in query.getTags('identity'):
attrs = node.getAttrs()
try:
idenities.append(
DiscoIdentity(category=attrs['category'],
type=attrs['type'],
name=attrs.get('name'),
lang=attrs.get('xml:lang')))
except Exception:
return raise_error(log.warning, stanza, 'stanza-malformed')
for node in query.getTags('feature'):
try:
features.append(node.getAttr('var'))
except Exception:
return raise_error(log.warning, stanza, 'stanza-malformed')
for node in query.getTags('x', namespace=NS_DATA):
dataforms.append(extend_form(node))
return DiscoInfo(stanza=stanza,
identities=idenities,
features=features,
dataforms=dataforms,
timestamp=timestamp)
def parse_disco_items(stanza):
items = []
query = stanza.getQuery()
for node in query.getTags('item'):
attrs = node.getAttrs()
try:
items.append(
DiscoItem(jid=attrs['jid'],
name=attrs.get('name'),
node=attrs.get('node')))
except Exception:
return raise_error(log.warning, stanza, 'stanza-malformed')
return DiscoItems(jid=stanza.getFrom(),
node=query.getAttr('node'),
items=items)
def get_disco_request(namespace, jid, node=None):
iq = Iq('get', to=jid, queryNS=namespace)
if node:
iq.getQuery().setAttr('node', node)
return iq
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