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annotate sat/plugins/plugin_xep_0359.py @ 2816:114cdde9ff96

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plugin XEP-0280: priority and "sent" fixes: - carbon prioriy must be bigger than ones of encryption plugins, because the carbon copied messages must be unwrapped to be decrypted, this patch fixes it - "sent" carbon elements was only stored and notified to frontends, it is now unwrapped and injected in normal traffic, this way other plugin can manage it, in particular encrypted elements can be decrypted
author Goffi <goffi@goffi.org>
date Thu, 28 Feb 2019 18:57:06 +0100
parents 003b8b4b56a7
children ab2696e34d29
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for Message Archive Management (XEP-0359)
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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7
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8 # This program is free software: you can redistribute it and/or modify
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9 # it under the terms of the GNU Affero General Public License as published by
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10 # the Free Software Foundation, either version 3 of the License, or
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11 # (at your option) any later version.
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12
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU Affero General Public License for more details.
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17
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18 # You should have received a copy of the GNU Affero General Public License
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20
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21 from sat.core.constants import Const as C
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22 from sat.core import exceptions
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23 from sat.core.i18n import _
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24 from sat.core.log import getLogger
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25 from twisted.words.protocols.jabber import xmlstream
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26 from zope.interface import implements
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27 from wokkel import disco
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28
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29 log = getLogger(__name__)
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30
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31
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32 PLUGIN_INFO = {
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33 C.PI_NAME: u"Unique and Stable Stanza IDs",
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34 C.PI_IMPORT_NAME: u"XEP-0359",
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35 C.PI_TYPE: u"XEP",
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36 C.PI_PROTOCOLS: [u"XEP-0359"],
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37 C.PI_MAIN: u"XEP_0359",
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38 C.PI_HANDLER: u"yes",
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39 C.PI_DESCRIPTION: _(u"""Implementation of Unique and Stable Stanza IDs"""),
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40 }
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41
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42 NS_SID = u"urn:xmpp:sid:0"
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43
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44
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45 class XEP_0359(object):
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46
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47 def __init__(self, host):
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48 log.info(_(u"Unique and Stable Stanza IDs plugin initialization"))
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49 self.host = host
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50 host.registerNamespace(u"stanza_id", NS_SID)
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51 host.trigger.add(u"message_parse", self._message_parseTrigger)
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52
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53 def _message_parseTrigger(self, client, message_elt, mess_data):
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54 """Check if message has a stanza-id"""
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55 stanza_id = self.getStanzaId(message_elt, client.jid.userhostJID())
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56 if stanza_id is not None:
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57 mess_data[u'extra'][u'stanza_id'] = stanza_id
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58 return True
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59
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60 def getStanzaId(self, element, by):
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61 """Return stanza-id if found in element
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62
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63 @param element(domish.Element): element to parse
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64 @param by(jid.JID): entity which should have set a stanza-id
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65 @return (unicode, None): stanza-id if found
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66 """
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67 stanza_id = None
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68 for stanza_elt in element.elements(NS_SID, u"stanza-id"):
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69 if stanza_elt.getAttribute(u"by") == by.full():
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70 if stanza_id is not None:
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71 # we must not have more than one element (§3 #4)
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72 raise exceptions.DataError(
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73 u"More than one corresponding stanza-id found!")
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74 stanza_id = stanza_elt.getAttribute(u"id")
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75 # we don't break to be sure that there is no more than one element
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76 # with this "by" attribute
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77
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78 return stanza_id
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79
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80 def addStanzaId(self, client, element, stanza_id, by=None):
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81 """Add a <stanza-id/> to a stanza
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82
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83 @param element(domish.Element): stanza where the <stanza-id/> must be added
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84 @param stanza_id(unicode): id to use
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85 @param by(jid.JID, None): jid to use or None to use client.jid
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86 """
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87 sid_elt = element.addElement((NS_SID, u"stanza-id"))
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88 sid_elt[u"by"] = client.jid.userhost() if by is None else by.userhost()
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89 sid_elt[u"id"] = stanza_id
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90
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91 def getHandler(self, client):
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92 return XEP_0359_handler()
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93
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94
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95 class XEP_0359_handler(xmlstream.XMPPHandler):
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96 implements(disco.IDisco)
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97
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98 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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99 return [disco.DiscoFeature(NS_SID)]
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100
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101 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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102 return []