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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.namespaces import Namespace
from nbxmpp.protocol import ErrorNode
from nbxmpp.protocol import ERR_ITEM_NOT_FOUND
from nbxmpp.protocol import NodeProcessed
from nbxmpp.modules.dataforms import extend_form
from nbxmpp.modules.base import BaseModule
from nbxmpp.structs import DiscoIdentity
from nbxmpp.structs import DiscoInfo
from nbxmpp.structs import DiscoItems
from nbxmpp.structs import DiscoItem
from nbxmpp.structs import StanzaHandler
from nbxmpp.util import raise_error
from nbxmpp.task import iq_request_task
from nbxmpp.errors import StanzaError
log = logging.getLogger('nbxmpp.m.discovery')
class Discovery(BaseModule):
def __init__(self, client):
BaseModule.__init__(self, client)
self._client = client
self.handlers = [
StanzaHandler(name='iq',
callback=self._process_disco_info,
typ='get',
ns=Namespace.DISCO_INFO,
priority=90),
]
@staticmethod
def _process_disco_info(client, stanza, properties):
iq = stanza.buildReply('error')
iq.addChild(node=ErrorNode(ERR_ITEM_NOT_FOUND))
client.send_stanza(iq)
raise NodeProcessed
@iq_request_task
def disco_info(self, jid, node=None):
_task = yield
self._log.info('Disco info: %s, node: %s', jid, node)
response = yield get_disco_request(Namespace.DISCO_INFO, jid, node)
if response.isError():
raise StanzaError(response)
yield parse_disco_info(response)
@iq_request_task
def disco_items(self, jid, node=None):
_task = yield
self._log.info('Disco items: %s, node: %s', jid, node)
response = yield get_disco_request(Namespace.DISCO_ITEMS, jid, node)
if response.isError():
raise StanzaError(response)
yield parse_disco_items(response)
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=Namespace.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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