view sat/plugins/plugin_xep_0049.py @ 3011:93da7c6f8e0c

plugin XEP-0198: retrieve missing messages + send buffered ones on hot reconnection: Missing one2one messages are now retrieved with MAM on hot reconnection, and buffered ones (which have most probably not been received by the server) are resent at the end of the reconnection workflow. IQ results are not re-sent on hot reconnection, as they don't make sense anymore with a new session. fix 330
author Goffi <goffi@goffi.org>
date Wed, 17 Jul 2019 09:28:35 +0200
parents 003b8b4b56a7
children ab2696e34d29
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SAT plugin for managing xep-0049
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from sat.core.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger

log = getLogger(__name__)
from wokkel import compat
from twisted.words.xish import domish


PLUGIN_INFO = {
    C.PI_NAME: "XEP-0049 Plugin",
    C.PI_IMPORT_NAME: "XEP-0049",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0049"],
    C.PI_DEPENDENCIES: [],
    C.PI_MAIN: "XEP_0049",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: _("""Implementation of private XML storage"""),
}


class XEP_0049(object):
    NS_PRIVATE = "jabber:iq:private"

    def __init__(self, host):
        log.info(_("Plugin XEP-0049 initialization"))
        self.host = host

    def privateXMLStore(self, element, profile_key):
        """Store private data
        @param element: domish.Element to store (must have a namespace)
        @param profile_key: %(doc_profile_key)s

        """
        assert isinstance(element, domish.Element)
        client = self.host.getClient(profile_key)
        # XXX: feature announcement in disco#info is not mandatory in XEP-0049, so we have to try to use private XML, and react according to the answer
        iq_elt = compat.IQ(client.xmlstream)
        query_elt = iq_elt.addElement("query", XEP_0049.NS_PRIVATE)
        query_elt.addChild(element)
        return iq_elt.send()

    def privateXMLGet(self, node_name, namespace, profile_key):
        """Store private data
        @param node_name: name of the node to get
        @param namespace: namespace of the node to get
        @param profile_key: %(doc_profile_key)s
        @return (domish.Element): a deferred which fire the stored data

        """
        client = self.host.getClient(profile_key)
        # XXX: see privateXMLStore note about feature checking
        iq_elt = compat.IQ(client.xmlstream, "get")
        query_elt = iq_elt.addElement("query", XEP_0049.NS_PRIVATE)
        query_elt.addElement(node_name, namespace)

        def getCb(answer_iq_elt):
            answer_query_elt = answer_iq_elt.elements(XEP_0049.NS_PRIVATE, "query").next()
            return answer_query_elt.firstChildElement()

        d = iq_elt.send()
        d.addCallback(getCb)
        return d