Mercurial > libervia-backend
view libervia/backend/plugins/plugin_xep_0297.py @ 4306:94e0968987cd
plugin XEP-0033: code modernisation, improve delivery, data validation:
- Code has been rewritten using Pydantic models and `async` coroutines for data validation
and cleaner element parsing/generation.
- Delivery has been completely rewritten. It now works even if server doesn't support
multicast, and send to local multicast service first. Delivering to local multicast
service first is due to bad support of XEP-0033 in server (notably Prosody which has an
incomplete implementation), and the current impossibility to detect if a sub-domain
service handles fully multicast or only for local domains. This is a workaround to have
a good balance between backward compatilibity and use of bandwith, and to make it work
with the incoming email gateway implementation (the gateway will only deliver to
entities of its own domain).
- disco feature checking now uses `async` corountines. `host` implementation still use
Deferred return values for compatibility with legacy code.
rel 450
author | Goffi <goffi@goffi.org> |
---|---|
date | Thu, 26 Sep 2024 16:12:01 +0200 |
parents | 4b842c1fb686 |
children |
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#!/usr/bin/env python3 # SAT plugin for Stanza Forwarding (XEP-0297) # Copyright (C) 2009-2021 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 libervia.backend.core.constants import Const as C from libervia.backend.core.i18n import _, D_ from libervia.backend.core.log import getLogger from twisted.internet import defer 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 get_handler(self, client): return XEP_0297_handler(self, client.profile) @classmethod def update_uri(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.update_uri(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.send_message_data # 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.update_uri(stanza, "jabber:client") forwarded_elt.addChild(stanza) msg.addChild(body_elt) msg.addChild(forwarded_elt) client = self.host.get_client(profile_key) return defer.ensureDeferred(client.send_message_data({"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 []