Mercurial > libervia-backend
view sat/plugins/plugin_xep_0334.py @ 3405:ecdb3728749e
plugin XEP-0353: Jingle Message Initiation implementation:
This plugin uses the new `XEP-0166_initiate` trigger to initiate a Jingle session with
messages if the peer jid has no resource specified.
On reception, if the sender is not in our roster, a confirmation is requested to user to
avoid leaking presence and IP. If user refuses the session for somebody not in roster,
nothing is sent at all (the request is just ignored).
author | Goffi <goffi@goffi.org> |
---|---|
date | Thu, 12 Nov 2020 14:53:15 +0100 |
parents | dcebc585c29f |
children | be6d91572633 |
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#!/usr/bin/env python3 # SAT plugin for Delayed Delivery (XEP-0334) # 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 _, D_ from sat.core.log import getLogger log = getLogger(__name__) from sat.core.constants import Const as C from sat.tools.common import data_format from wokkel import disco, iwokkel from twisted.words.protocols.jabber import xmlstream from zope.interface import implementer from textwrap import dedent PLUGIN_INFO = { C.PI_NAME: "Message Processing Hints", C.PI_IMPORT_NAME: "XEP-0334", C.PI_TYPE: "XEP", C.PI_PROTOCOLS: ["XEP-0334"], C.PI_MAIN: "XEP_0334", C.PI_HANDLER: "yes", C.PI_DESCRIPTION: D_("""Implementation of Message Processing Hints"""), C.PI_USAGE: dedent( D_( """\ Frontends can use HINT_* constants in mess_data['extra'] in a serialized 'hints' dict. Internal plugins can use directly addHint([HINT_* constant]). Will set mess_data['extra']['history'] to 'skipped' when no store is requested and message is not saved in history.""" ) ), } NS_HINTS = "urn:xmpp:hints" class XEP_0334(object): HINT_NO_PERMANENT_STORE = "no-permanent-store" HINT_NO_STORE = "no-store" HINT_NO_COPY = "no-copy" HINT_STORE = "store" HINTS = (HINT_NO_PERMANENT_STORE, HINT_NO_STORE, HINT_NO_COPY, HINT_STORE) def __init__(self, host): log.info(_("Message Processing Hints plugin initialization")) self.host = host host.trigger.add("sendMessage", self.sendMessageTrigger) host.trigger.add("messageReceived", self.messageReceivedTrigger, priority=-1000) def getHandler(self, client): return XEP_0334_handler() def addHint(self, mess_data, hint): if hint == self.HINT_NO_COPY and not mess_data["to"].resource: log.error( "{hint} can only be used with full jids! Ignoring it.".format(hint=hint) ) return hints = mess_data.setdefault("hints", set()) if hint in self.HINTS: hints.add(hint) else: log.error("Unknown hint: {}".format(hint)) def addHintElements(self, message_elt, hints): """Add hints elements to message stanza @param message_elt(domish.Element): stanza where hints must be added @param hints(iterable(unicode)): hints to add """ for hint in hints: message_elt.addElement((NS_HINTS, hint)) def _sendPostXmlTreatment(self, mess_data): if "hints" in mess_data: self.addHintElements(mess_data["xml"], mess_data["hints"]) return mess_data def sendMessageTrigger( self, client, mess_data, pre_xml_treatments, post_xml_treatments ): """Add the hints element to the message to be sent""" if "hints" in mess_data["extra"]: for hint in data_format.dict2iter("hints", mess_data["extra"], pop=True): self.addHint(hint) post_xml_treatments.addCallback(self._sendPostXmlTreatment) return True def _receivedSkipHistory(self, mess_data): mess_data["history"] = C.HISTORY_SKIP return mess_data def messageReceivedTrigger(self, client, message_elt, post_treat): """Check for hints in the received message""" for elt in message_elt.elements(): if elt.uri == NS_HINTS and elt.name in ( self.HINT_NO_PERMANENT_STORE, self.HINT_NO_STORE, ): log.debug("history will be skipped for this message, as requested") post_treat.addCallback(self._receivedSkipHistory) break return True @implementer(iwokkel.IDisco) class XEP_0334_handler(xmlstream.XMPPHandler): def getDiscoInfo(self, requestor, target, nodeIdentifier=""): return [disco.DiscoFeature(NS_HINTS)] def getDiscoItems(self, requestor, target, nodeIdentifier=""): return []