102 lines
3.7 KiB
Python
102 lines
3.7 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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# SAT plugin for Message Archive Management (XEP-0359)
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# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sat.core.constants import Const as C
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from sat.core import exceptions
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from sat.core.i18n import _
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from sat.core.log import getLogger
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from twisted.words.protocols.jabber import xmlstream
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from zope.interface import implements
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from wokkel import disco
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log = getLogger(__name__)
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PLUGIN_INFO = {
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C.PI_NAME: u"Unique and Stable Stanza IDs",
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C.PI_IMPORT_NAME: u"XEP-0359",
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C.PI_TYPE: u"XEP",
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C.PI_PROTOCOLS: [u"XEP-0359"],
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C.PI_MAIN: u"XEP_0359",
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C.PI_HANDLER: u"yes",
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C.PI_DESCRIPTION: _(u"""Implementation of Unique and Stable Stanza IDs"""),
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}
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NS_SID = u"urn:xmpp:sid:0"
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class XEP_0359(object):
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def __init__(self, host):
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log.info(_(u"Unique and Stable Stanza IDs plugin initialization"))
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self.host = host
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host.registerNamespace(u"stanza_id", NS_SID)
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host.trigger.add(u"message_parse", self._message_parseTrigger)
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def _message_parseTrigger(self, client, message_elt, mess_data):
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"""Check if message has a stanza-id"""
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stanza_id = self.getStanzaId(message_elt, client.jid.userhostJID())
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if stanza_id is not None:
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mess_data[u'extra'][u'stanza_id'] = stanza_id
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return True
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def getStanzaId(self, element, by):
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"""Return stanza-id if found in element
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@param element(domish.Element): element to parse
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@param by(jid.JID): entity which should have set a stanza-id
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@return (unicode, None): stanza-id if found
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"""
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stanza_id = None
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for stanza_elt in element.elements(NS_SID, u"stanza-id"):
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if stanza_elt.getAttribute(u"by") == by.full():
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if stanza_id is not None:
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# we must not have more than one element (§3 #4)
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raise exceptions.DataError(
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u"More than one corresponding stanza-id found!")
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stanza_id = stanza_elt.getAttribute(u"id")
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# we don't break to be sure that there is no more than one element
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# with this "by" attribute
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return stanza_id
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def addStanzaId(self, client, element, stanza_id, by=None):
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"""Add a <stanza-id/> to a stanza
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@param element(domish.Element): stanza where the <stanza-id/> must be added
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@param stanza_id(unicode): id to use
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@param by(jid.JID, None): jid to use or None to use client.jid
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"""
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sid_elt = element.addElement((NS_SID, u"stanza-id"))
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sid_elt[u"by"] = client.jid.userhost() if by is None else by.userhost()
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sid_elt[u"id"] = stanza_id
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def getHandler(self, client):
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return XEP_0359_handler()
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class XEP_0359_handler(xmlstream.XMPPHandler):
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implements(disco.IDisco)
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def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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return [disco.DiscoFeature(NS_SID)]
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def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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return []
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