Mercurial > libervia-backend
view libervia/backend/plugins/plugin_xep_0199.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 | 0d7bb4df2343 |
children |
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#!/usr/bin/env python3 # SAT plugin for Delayed Delivery (XEP-0199) # 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.i18n import _, D_ from libervia.backend.core.log import getLogger log = getLogger(__name__) from libervia.backend.core.constants import Const as C from wokkel import disco, iwokkel from twisted.words.protocols.jabber import xmlstream, jid from zope.interface import implementer import time PLUGIN_INFO = { C.PI_NAME: "XMPP PING", C.PI_IMPORT_NAME: "XEP-0199", C.PI_TYPE: "XEP", C.PI_PROTOCOLS: ["XEP-199"], C.PI_MAIN: "XEP_0199", C.PI_HANDLER: "yes", C.PI_DESCRIPTION: D_("""Implementation of XMPP Ping"""), } NS_PING = "urn:xmpp:ping" PING_REQUEST = C.IQ_GET + '/ping[@xmlns="' + NS_PING + '"]' class XEP_0199(object): def __init__(self, host): log.info(_("XMPP Ping plugin initialization")) self.host = host host.bridge.add_method( "ping", ".plugin", in_sign="ss", out_sign="d", method=self._ping, async_=True ) try: self.text_cmds = self.host.plugins[C.TEXT_CMDS] except KeyError: log.info(_("Text commands not available")) else: self.text_cmds.register_text_commands(self) def get_handler(self, client): return XEP_0199_handler(self) def _ping_raise_if_failure(self, pong): """If ping didn't succeed, raise the failure, else return pong delay""" if pong[0] != "PONG": raise pong[0] return pong[1] def _ping(self, jid_s, profile): client = self.host.get_client(profile) entity_jid = jid.JID(jid_s) d = self.ping(client, entity_jid) d.addCallback(self._ping_raise_if_failure) return d def _ping_cb(self, iq_result, send_time): receive_time = time.time() return ("PONG", receive_time - send_time) def _ping_eb(self, failure_, send_time): receive_time = time.time() return (failure_.value, receive_time - send_time) def ping(self, client, entity_jid): """Ping an XMPP entity @param entity_jid(jid.JID): entity to ping @return (tuple[(unicode,failure), float]): pong data: - either u"PONG" if it was successful, or failure - delay between sending time and reception time """ iq_elt = client.IQ("get") iq_elt["to"] = entity_jid.full() iq_elt.addElement((NS_PING, "ping")) d = iq_elt.send() send_time = time.time() d.addCallback(self._ping_cb, send_time) d.addErrback(self._ping_eb, send_time) return d def _cmd_ping_fb(self, pong, client, mess_data): """Send feedback to client when pong data is received""" txt_cmd = self.host.plugins[C.TEXT_CMDS] if pong[0] == "PONG": txt_cmd.feed_back(client, "PONG ({time} s)".format(time=pong[1]), mess_data) else: txt_cmd.feed_back( client, _("ping error ({err_msg}). Response time: {time} s").format( err_msg=pong[0], time=pong[1] ), mess_data, ) def cmd_ping(self, client, mess_data): """ping an entity @command (all): [JID] - JID: jid of the entity to ping """ if mess_data["unparsed"].strip(): try: entity_jid = jid.JID(mess_data["unparsed"].strip()) except RuntimeError: txt_cmd = self.host.plugins[C.TEXT_CMDS] txt_cmd.feed_back( client, _('Invalid jid: "{entity_jid}"').format( entity_jid=mess_data["unparsed"].strip() ), mess_data, ) return False else: entity_jid = mess_data["to"] d = self.ping(client, entity_jid) d.addCallback(self._cmd_ping_fb, client, mess_data) return False def on_ping_request(self, iq_elt, client): log.info( _("XMPP PING received from {from_jid} [{profile}]").format( from_jid=iq_elt["from"], profile=client.profile ) ) iq_elt.handled = True iq_result_elt = xmlstream.toResponse(iq_elt, "result") client.send(iq_result_elt) @implementer(iwokkel.IDisco) class XEP_0199_handler(xmlstream.XMPPHandler): def __init__(self, plugin_parent): self.plugin_parent = plugin_parent def connectionInitialized(self): self.xmlstream.addObserver( PING_REQUEST, self.plugin_parent.on_ping_request, client=self.parent ) def getDiscoInfo(self, requestor, target, nodeIdentifier=""): return [disco.DiscoFeature(NS_PING)] def getDiscoItems(self, requestor, target, nodeIdentifier=""): return []