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

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2018-07-19 21:26:45 +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-0184: Message Delivery Receipts
import logging
import nbxmpp
from gajim.common import app
from gajim.common.nec import NetworkIncomingEvent
log = logging.getLogger('gajim.c.m.receipts')
class Receipts:
def __init__(self, con):
self._con = con
self._account = con.name
self.handlers = []
def delegate(self, event):
request = event.stanza.getTag('request',
namespace=nbxmpp.NS_RECEIPTS)
if request is not None:
self._answer_request(event)
return
received = event.stanza.getTag('received',
namespace=nbxmpp.NS_RECEIPTS)
if received is not None:
self._receipt_received(event, received)
raise nbxmpp.NodeProcessed
def _answer_request(self, event):
if not app.config.get_per('accounts', self._account,
'answer_receipts'):
return
if event.mtype not in ('chat', 'groupchat'):
return
if event.sent:
# Never answer messages that we sent from another device
return
from_ = event.stanza.getFrom()
if self._con.get_own_jid().bareMatch(from_):
# Dont answer receipts from our other resources
return
receipt_id = event.stanza.getID()
contact = self._get_contact(event)
if contact is None:
return
receipt = self._build_answer_receipt(from_, receipt_id)
log.info('Answer %s', receipt_id)
self._con.connection.send(receipt)
def _get_contact(self, event):
if event.mtype == 'chat':
contact = app.contacts.get_contact(self._account, event.jid)
if contact and contact.sub not in ('to', 'none'):
return contact
else:
return app.contacts.get_gc_contact(self._account,
event.jid,
event.resource)
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@staticmethod
def _build_answer_receipt(to, receipt_id):
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receipt = nbxmpp.Message(to=to, typ='chat')
receipt.setTag('received',
namespace='urn:xmpp:receipts',
attrs={'id': receipt_id})
return receipt
def _receipt_received(self, event, received):
receipt_id = received.getAttr('id')
if receipt_id is None:
log.warning('Receipt without ID: %s', event.stanza)
return
log.info('Received %s', receipt_id)
app.nec.push_incoming_event(
NetworkIncomingEvent('receipt-received',
conn=self._con,
receipt_id=receipt_id,
jid=event.jid))
def get_instance(*args, **kwargs):
return Receipts(*args, **kwargs), 'Receipts'