view sat/plugins/plugin_xep_0297.py @ 3101:ab7e8ade848a

plugin XEP-0045: added room statuses to metadata: room statuses are now sent with other metadata on bridge signals, and saved in Room instance. They give useful data on the room, for instance they can be used to know if a full jid is used in this room.
author Goffi <goffi@goffi.org>
date Mon, 30 Dec 2019 20:44:02 +0100
parents ab2696e34d29
children 9d0df638c8b4
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# SAT plugin for Stanza Forwarding (XEP-0297)
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.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.constants import Const as C
from sat.core.i18n import _, D_
from sat.core.log import getLogger

log = getLogger(__name__)

from wokkel import disco, iwokkel

try:
    from twisted.words.protocols.xmlstream import XMPPHandler
except ImportError:
    from wokkel.subprotocols import XMPPHandler
from zope.interface import implementer

from twisted.words.xish import domish

PLUGIN_INFO = {
    C.PI_NAME: "Stanza Forwarding",
    C.PI_IMPORT_NAME: "XEP-0297",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0297"],
    C.PI_MAIN: "XEP_0297",
    C.PI_HANDLER: "yes",
    C.PI_DESCRIPTION: D_("""Implementation of Stanza Forwarding"""),
}


class XEP_0297(object):
    # FIXME: check this implementation which doesn't seems to be used

    def __init__(self, host):
        log.info(_("Stanza Forwarding plugin initialization"))
        self.host = host

    def getHandler(self, client):
        return XEP_0297_handler(self, client.profile)

    @classmethod
    def updateUri(cls, element, uri):
        """Update recursively the element URI.

        @param element (domish.Element): element to update
        @param uri (unicode): new URI
        """
        # XXX: we need this because changing the URI of an existing element
        # containing children doesn't update the children's blank URI.
        element.uri = uri
        element.defaultUri = uri
        for child in element.children:
            if isinstance(child, domish.Element) and not child.uri:
                XEP_0297.updateUri(child, uri)

    def forward(self, stanza, to_jid, stamp, body="", profile_key=C.PROF_KEY_NONE):
        """Forward a message to the given JID.

        @param stanza (domish.Element): original stanza to be forwarded.
        @param to_jid (JID): recipient JID.
        @param stamp (datetime): offset-aware timestamp of the original reception.
        @param body (unicode): optional description.
        @param profile_key (unicode): %(doc_profile_key)s
        @return: a Deferred when the message has been sent
        """
        # FIXME: this method is not used and doesn't use mess_data which should be used for client.sendMessageData
        #        should it be deprecated? A method constructing the element without sending it seems more natural
        log.warning(
            "THIS METHOD IS DEPRECATED"
        )  #  FIXME: we use this warning until we check the method
        msg = domish.Element((None, "message"))
        msg["to"] = to_jid.full()
        msg["type"] = stanza["type"]

        body_elt = domish.Element((None, "body"))
        if body:
            body_elt.addContent(body)

        forwarded_elt = domish.Element((C.NS_FORWARD, "forwarded"))
        delay_elt = self.host.plugins["XEP-0203"].delay(stamp)
        forwarded_elt.addChild(delay_elt)
        if not stanza.uri:  # None or ''
            XEP_0297.updateUri(stanza, "jabber:client")
        forwarded_elt.addChild(stanza)

        msg.addChild(body_elt)
        msg.addChild(forwarded_elt)

        client = self.host.getClient(profile_key)
        return client.sendMessageData({"xml": msg})


@implementer(iwokkel.IDisco)
class XEP_0297_handler(XMPPHandler):

    def __init__(self, plugin_parent, profile):
        self.plugin_parent = plugin_parent
        self.host = plugin_parent.host
        self.profile = profile

    def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
        return [disco.DiscoFeature(C.NS_FORWARD)]

    def getDiscoItems(self, requestor, target, nodeIdentifier=""):
        return []