view sat/plugins/plugin_exp_invitation_pubsub.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 edc79cefe968
children 26c3e1bc7fb7
line wrap: on
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#!/usr/bin/env python3

# SàT plugin to send invitations for Pubsub
# 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 typing import Optional
from twisted.internet import defer
from twisted.words.protocols.jabber import jid
from twisted.words.xish import domish
from sat.core.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger
from sat.core.xmpp import SatXMPPEntity
from sat.tools import utils
from sat.tools.common import data_format

log = getLogger(__name__)


PLUGIN_INFO = {
    C.PI_NAME: "Pubsub Invitation",
    C.PI_IMPORT_NAME: "PUBSUB_INVITATION",
    C.PI_TYPE: "EXP",
    C.PI_PROTOCOLS: [],
    C.PI_DEPENDENCIES: ["XEP-0060", "INVITATION"],
    C.PI_RECOMMENDATIONS: [],
    C.PI_MAIN: "PubsubInvitation",
    C.PI_HANDLER: "no",
    C.PI_DESCRIPTION: _("Invitations for pubsub based features"),
}


class PubsubInvitation:

    def __init__(self, host):
        log.info(_("Pubsub Invitation plugin initialization"))
        self.host = host
        self._p = host.plugins["XEP-0060"]
        # namespace to handler map
        self._ns_handler = {}
        host.bridge.addMethod(
            "psInvite",
            ".plugin",
            in_sign="sssssss",
            out_sign="",
            method=self._sendPubsubInvitation,
            async_=True
        )

    def register(
        self,
        namespace: str,
        handler
    ) -> None:
        self._ns_handler[namespace] = handler
        self.host.plugins["INVITATION"].registerNamespace(namespace, self.onInvitation)

    def _sendPubsubInvitation(
            self, invitee_jid_s, service_s, node, item_id=None,
            name=None, extra_s='', profile_key=C.PROF_KEY_NONE):
        client = self.host.getClient(profile_key)
        invitee_jid = jid.JID(invitee_jid_s)
        service = jid.JID(service_s)
        extra = data_format.deserialise(extra_s)
        return defer.ensureDeferred(
            self.invite(
                client,
                invitee_jid,
                service,
                node,
                item_id or None,
                name=name or None,
                extra=extra
            )
        )

    async def invite(
        self,
        client: SatXMPPEntity,
        invitee_jid: jid.JID,
        service: jid.JID,
        node: str,
        item_id: Optional[str] = None,
        name: str = '',
        extra: Optional[dict] = None,
    ) -> None:
        if extra is None:
            extra = {}
        else:
            namespace = extra.get("namespace")
            if namespace:
                try:
                    handler = self._ns_handler[namespace]
                    preflight = handler.invitePreflight
                except KeyError:
                    pass
                except AttributeError:
                    log.debug(f"no invitePreflight method found for {namespace!r}")
                else:
                    await utils.asDeferred(
                        preflight,
                        client, invitee_jid, service, node, item_id, name, extra
                    )
            if item_id is None:
                item_id = extra.pop("default_item_id", None)

        # we authorize our invitee to see the nodes of interest
        await self._p.setNodeAffiliations(client, service, node, {invitee_jid: "member"})
        log.debug(f"affiliation set on {service}'s {node!r} node")

        # now we send the invitation
        self.host.plugins["INVITATION"].sendPubsubInvitation(
            client,
            invitee_jid,
            service,
            node,
            item_id,
            name=name or None,
            extra=extra
        )

    async def onInvitation(
        self,
        client: SatXMPPEntity,
        namespace: str,
        name: str,
        extra: dict,
        service: jid.JID,
        node: str,
        item_id: Optional[str],
        item_elt: domish.Element
    ) -> None:
        if extra is None:
            extra = {}
        try:
            handler = self._ns_handler[namespace]
            preflight = handler.onInvitationPreflight
        except KeyError:
            pass
        except AttributeError:
            log.debug(f"no onInvitationPreflight method found for {namespace!r}")
        else:
            await utils.asDeferred(
                preflight,
                client, namespace, name, extra, service, node, item_id, item_elt
            )
            if item_id is None:
                item_id = extra.pop("default_item_id", None)
        creator = extra.pop("creator", False)
        element = extra.pop("element", None)
        if not name:
            name = extra.pop("name", "")

        return await self.host.plugins['LIST_INTEREST'].registerPubsub(
            client, namespace, service, node, item_id, creator,
            name, element, extra)