Mercurial > libervia-backend
view sat/plugins/plugin_xep_0334.py @ 3727:a6dfd3db372b
cli (blog/get): fix default output when a value is None
author | Goffi <goffi@goffi.org> |
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date | Tue, 25 Jan 2022 17:27:39 +0100 |
parents | be6d91572633 |
children | 68a11b95a7d3 |
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#!/usr/bin/env python3 # SAT plugin for Delayed Delivery (XEP-0334) # 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 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 []