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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 logging
import base64
from nbxmpp.protocol import NS_AVATAR_DATA
from nbxmpp.protocol import NS_AVATAR_METADATA
from nbxmpp.protocol import NS_PUBSUB_EVENT
from nbxmpp.protocol import NodeProcessed
from nbxmpp.protocol import isResultNode
from nbxmpp.protocol import JID
from nbxmpp.structs import StanzaHandler
from nbxmpp.structs import AvatarMetaData
from nbxmpp.structs import AvatarData
from nbxmpp.util import call_on_response
from nbxmpp.util import callback
from nbxmpp.util import raise_error
from nbxmpp.modules.pubsub import get_pubsub_request
log = logging.getLogger('nbxmpp.m.user_avatar')
class UserAvatar:
def __init__(self, client):
self._client = client
self.handlers = [
StanzaHandler(name='message',
callback=self._process_pubsub_avatar,
ns=NS_PUBSUB_EVENT,
priority=16),
]
def _process_pubsub_avatar(self, _client, stanza, properties):
if not properties.is_pubsub_event:
return
if properties.pubsub_event.node != NS_AVATAR_METADATA:
return
item = properties.pubsub_event.item
if item is None:
# Retract, Deleted or Purged
return
metadata = item.getTag('metadata', namespace=NS_AVATAR_METADATA)
if metadata is None:
log.warning('No metadata node found')
log.warning(stanza)
raise NodeProcessed
if not metadata.getChildren():
log.info('Received avatar metadata: %s - no avatar set',
properties.jid)
return
info = metadata.getTags('info', one=True)
try:
data = AvatarMetaData(**info.getAttrs())
except Exception:
log.warning('Malformed user avatar data')
log.warning(stanza)
raise NodeProcessed
pubsub_event = properties.pubsub_event._replace(data=data)
log.info('Received avatar metadata: %s - %s', properties.jid, data)
properties.pubsub_event = pubsub_event
@call_on_response('_avatar_data_received')
def request_avatar(self, jid, id_):
return get_pubsub_request(jid, NS_AVATAR_DATA, id_=id_)
@callback
def _avatar_data_received(self, stanza):
jid = stanza.getFrom()
if jid is None:
jid = JID(self._client.get_bound_jid().getBare())
if not isResultNode(stanza):
return raise_error(log.warning, stanza)
pubsub_node = stanza.getTag('pubsub')
items_node = pubsub_node.getTag('items')
item = items_node.getTag('item')
if item is None:
return raise_error(log.warning, stanza, 'stanza-malformed',
'No item in node found')
sha = item.getAttr('id')
data_node = item.getTag('data', namespace=NS_AVATAR_DATA)
if data_node is None:
return raise_error(log.warning, stanza, 'stanza-malformed',
'No data node found')
data = data_node.getData()
if data is None:
return raise_error(log.warning, stanza, 'stanza-malformed',
'Data node empty')
try:
data = base64.b64decode(data.encode('utf-8'))
except Exception as error:
return raise_error(log.warning, stanza,
'stanza-malformed', str(error))
log.info('Received avatar data: %s %s', jid, sha)
return AvatarData(jid, sha, data)
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