view sat/plugins/plugin_xep_0203.py @ 3452:bb0225aaf4e6

plugin XEP-0346: "Form Discovery and Publishing" implementation: this implementation replaces the former non standard node schema, and works in a similar way (the schema is put in a separated node instead of a special field, thus it will now work with most/all PubSub services, and not only SàT PubSub). The implementation has been done in a way that nothing should be changed in frontends (bridge methods names and arguments stay the same). The nodes are modified, but if values are taken from backend, it's automatically adapted.
author Goffi <goffi@goffi.org>
date Fri, 11 Dec 2020 17:57:00 +0100
parents 559a625a236b
children be6d91572633
line wrap: on
line source

#!/usr/bin/env python3


# SAT plugin for Delayed Delivery (XEP-0203)
# Copyright (C) 2009-2020 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.i18n import _
from sat.core.constants import Const as C
from sat.core.log import getLogger

log = getLogger(__name__)

from wokkel import disco, iwokkel, delay

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


NS_DD = "urn:xmpp:delay"

PLUGIN_INFO = {
    C.PI_NAME: "Delayed Delivery",
    C.PI_IMPORT_NAME: "XEP-0203",
    C.PI_TYPE: "XEP",
    C.PI_PROTOCOLS: ["XEP-0203"],
    C.PI_MAIN: "XEP_0203",
    C.PI_HANDLER: "yes",
    C.PI_DESCRIPTION: _("""Implementation of Delayed Delivery"""),
}


class XEP_0203(object):
    def __init__(self, host):
        log.info(_("Delayed Delivery plugin initialization"))
        self.host = host

    def getHandler(self, client):
        return XEP_0203_handler(self, client.profile)

    def delay(self, stamp, sender=None, desc="", parent=None):
        """Build a delay element, eventually append it to the given parent element.

        @param stamp (datetime): offset-aware timestamp of the original sending.
        @param sender (JID): entity that originally sent or delayed the message.
        @param desc (unicode): optional natural language description.
        @param parent (domish.Element): add the delay element to this element.
        @return: the delay element (domish.Element)
        """
        elt = delay.Delay(stamp, sender).toElement()
        if desc:
            elt.addContent(desc)
        if parent:
            parent.addChild(elt)
        return elt


@implementer(iwokkel.IDisco)
class XEP_0203_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(NS_DD)]

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