view sat/plugins/plugin_exp_pubsub_admin.py @ 4002:5245b675f7ad

plugin XEP-0313: don't wait for MAM to be retrieved in connection workflow: MAM retrieval can be long, and can be done after connection, message just need to be sorted when being inserted (i.e. frontends must do insort). To avoid blocking connection for too long and result in bad UX and timeout risk, one2one MAM message are not retrieved in background.
author Goffi <goffi@goffi.org>
date Fri, 10 Mar 2023 17:22:45 +0100
parents be6d91572633
children 524856bd7b19
line wrap: on
line source

#!/usr/bin/env python3


# SAT plugin to send pubsub requests with administrator privilege
# Copyright (C) 2009-2021 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 import exceptions
from sat.core.constants import Const as C
from sat.core.log import getLogger
from sat.tools.common import data_format
from twisted.words.protocols.jabber import jid
from wokkel import pubsub
from wokkel import generic

log = getLogger(__name__)

PLUGIN_INFO = {
    C.PI_NAME: "Pubsub Administrator",
    C.PI_IMPORT_NAME: "PUBSUB_ADMIN",
    C.PI_TYPE: C.PLUG_TYPE_EXP,
    C.PI_PROTOCOLS: [],
    C.PI_DEPENDENCIES: [],
    C.PI_RECOMMENDATIONS: [],
    C.PI_MAIN: "PubsubAdmin",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: _("""\Implementation of Pubsub Administrator
This allows a pubsub administrator to overwrite completly items, including publisher.
Specially useful when importing a node."""),
}

NS_PUBSUB_ADMIN = "https://salut-a-toi.org/spec/pubsub_admin:0"


class PubsubAdmin(object):

    def __init__(self, host):
        self.host = host
        host.bridge.addMethod(
            "psAdminItemsSend",
            ".plugin",
            in_sign="ssasss",
            out_sign="as",
            method=self._publish,
            async_=True,
        )

    def _publish(self, service, nodeIdentifier, items, extra=None,
                 profile_key=C.PROF_KEY_NONE):
        client = self.host.getClient(profile_key)
        service = None if not service else jid.JID(service)
        extra = data_format.deserialise(extra)
        items = [generic.parseXml(i.encode('utf-8')) for i in items]
        return self.publish(
            client, service, nodeIdentifier, items, extra
        )

    def _sendCb(self, iq_result):
        publish_elt = iq_result.admin.pubsub.publish
        ids = []
        for item_elt in publish_elt.elements(pubsub.NS_PUBSUB, 'item'):
            ids.append(item_elt['id'])
        return ids

    def publish(self, client, service, nodeIdentifier, items, extra=None):
        for item in items:
            if item.name != 'item' or item.uri != pubsub.NS_PUBSUB:
                raise exceptions.DataError(
                    'Invalid element, a pubsub item is expected: {xml}'.format(
                    xml=item.toXml()))
        iq_elt = client.IQ()
        iq_elt['to'] = service.full() if service else client.jid.userhost()
        admin_elt = iq_elt.addElement((NS_PUBSUB_ADMIN, 'admin'))
        pubsub_elt = admin_elt.addElement((pubsub.NS_PUBSUB, 'pubsub'))
        publish_elt = pubsub_elt.addElement('publish')
        publish_elt['node'] = nodeIdentifier
        for item in items:
            publish_elt.addChild(item)
        d = iq_elt.send()
        d.addCallback(self._sendCb)
        return d