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# Slixmpp: The Slick XMPP Library
# Copyright (C) 2012 Erik Reuterborg Larsson, Nathanael C. Fritz
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.
import logging
from slixmpp.stanza import Message
from slixmpp.xmlstream import register_stanza_plugin
from slixmpp.xmlstream.handler import Callback
from slixmpp.xmlstream.matcher import StanzaPath
from slixmpp.plugins import BasePlugin
from slixmpp.plugins.xep_0184 import stanza, Request, Received
class XEP_0184(BasePlugin):
"""
XEP-0184: Message Delivery Receipts
"""
name = 'xep_0184'
description = 'XEP-0184: Message Delivery Receipts'
dependencies = {'xep_0030'}
stanza = stanza
default_config = {
'auto_ack': True,
'auto_request': False
}
ack_types = ('normal', 'chat', 'headline')
def plugin_init(self):
register_stanza_plugin(Message, Request)
register_stanza_plugin(Message, Received)
self.xmpp.add_filter('out', self._filter_add_receipt_request)
self.xmpp.register_handler(
Callback('Message Receipt',
StanzaPath('message/receipt'),
self._handle_receipt_received))
self.xmpp.register_handler(
Callback('Message Receipt Request',
StanzaPath('message/request_receipt'),
self._handle_receipt_request))
def plugin_end(self):
self.xmpp['xep_0030'].del_feature('urn:xmpp:receipts')
self.xmpp.del_filter('out', self._filter_add_receipt_request)
self.xmpp.remove_handler('Message Receipt')
self.xmpp.remove_handler('Message Receipt Request')
def session_bind(self, jid):
self.xmpp['xep_0030'].add_feature('urn:xmpp:receipts')
def ack(self, msg):
"""
Acknowledge a message by sending a receipt.
Arguments:
msg -- The message to acknowledge.
"""
ack = self.xmpp.Message()
ack['to'] = msg['from']
ack['receipt'] = msg['id']
ack.send()
def _handle_receipt_received(self, msg):
self.xmpp.event('receipt_received', msg)
def _handle_receipt_request(self, msg):
"""
Auto-ack message receipt requests if ``self.auto_ack`` is ``True``.
Arguments:
msg -- The incoming message requesting a receipt.
"""
if self.auto_ack:
if msg['type'] in self.ack_types:
if not msg['receipt']:
self.ack(msg)
def _filter_add_receipt_request(self, stanza):
"""
Auto add receipt requests to outgoing messages, if:
- ``self.auto_request`` is set to ``True``
- The message is not for groupchat
- The message does not contain a receipt acknowledgment
- The recipient is a bare JID or, if a full JID, one
that has the ``urn:xmpp:receipts`` feature enabled
The disco cache is checked if a full JID is specified in
the outgoing message, which may mean a round-trip disco#info
delay for the first message sent to the JID if entity caps
are not used.
"""
if not self.auto_request:
return stanza
if not isinstance(stanza, Message):
return stanza
if stanza['request_receipt']:
return stanza
if not stanza['type'] in self.ack_types:
return stanza
if stanza['receipt']:
return stanza
if not stanza['body']:
return stanza
if stanza['to'].resource:
if not self.xmpp['xep_0030'].supports(stanza['to'],
feature='urn:xmpp:receipts',
cached=True):
return stanza
stanza['request_receipt'] = True
return stanza
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