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annotate sat/plugins/plugin_xep_0359.py @ 3237:b0c57c9a4bd8

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plugin XEP-0384: OMEMO trust policy: OMEMO trust policy can now be specified. For now there are 2 policies: - `manual`: each new device fingerprint must be explicitly trusted or not before the device can be used, and the message sent - `BTBV` (Blind Trust Before Verification): each new device fingerprint is automically trusted, until user manually trust or not a device, in which case the behaviour becomes the same as for `manual` for the entity. When using the Trust UI, user can put the entity back to blind trust if they wish. A message is send as feedback to user when a new device is/must be trusted, trying to explain clearly what's happening to the user. Devices which have been automically trusted are marked, so user can know which ones may cause security issue.
author Goffi <goffi@goffi.org>
date Fri, 27 Mar 2020 10:02:14 +0100
parents 559a625a236b
children be6d91572633
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1 #!/usr/bin/env python3
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2
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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) 2009-2020 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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21 import uuid
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22 from zope.interface import implementer
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23 from twisted.words.protocols.jabber import xmlstream
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24 from wokkel import disco
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25 from sat.core.constants import Const as C
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26 from sat.core import exceptions
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27 from sat.core.i18n import _
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28 from sat.core.log import getLogger
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29
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30 log = getLogger(__name__)
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31
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32
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33 PLUGIN_INFO = {
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34 C.PI_NAME: "Unique and Stable Stanza IDs",
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35 C.PI_IMPORT_NAME: "XEP-0359",
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36 C.PI_TYPE: "XEP",
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37 C.PI_PROTOCOLS: ["XEP-0359"],
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38 C.PI_MAIN: "XEP_0359",
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39 C.PI_HANDLER: "yes",
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40 C.PI_DESCRIPTION: _("""Implementation of Unique and Stable Stanza IDs"""),
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41 }
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42
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43 NS_SID = "urn:xmpp:sid:0"
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45
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46 class XEP_0359(object):
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47
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48 def __init__(self, host):
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49 log.info(_("Unique and Stable Stanza IDs plugin initialization"))
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50 self.host = host
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51 host.registerNamespace("stanza_id", NS_SID)
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52 host.trigger.add("message_parse", self._message_parseTrigger)
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53
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54 def _message_parseTrigger(self, client, message_elt, mess_data):
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55 """Check if message has a stanza-id"""
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56 stanza_id = self.getStanzaId(message_elt, client.jid.userhostJID())
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57 if stanza_id is not None:
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58 mess_data['extra']['stanza_id'] = stanza_id
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59 return True
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60
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61 def getStanzaId(self, element, by):
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62 """Return stanza-id if found in element
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63
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64 @param element(domish.Element): element to parse
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65 @param by(jid.JID): entity which should have set a stanza-id
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66 @return (unicode, None): stanza-id if found
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67 """
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68 stanza_id = None
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69 for stanza_elt in element.elements(NS_SID, "stanza-id"):
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70 if stanza_elt.getAttribute("by") == by.full():
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71 if stanza_id is not None:
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72 # we must not have more than one element (§3 #4)
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73 raise exceptions.DataError(
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74 "More than one corresponding stanza-id found!")
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75 stanza_id = stanza_elt.getAttribute("id")
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76 # we don't break to be sure that there is no more than one element
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77 # with this "by" attribute
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78
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79 return stanza_id
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80
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81 def addStanzaId(self, client, element, stanza_id, by=None):
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82 """Add a <stanza-id/> to a stanza
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83
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84 @param element(domish.Element): stanza where the <stanza-id/> must be added
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85 @param stanza_id(unicode): id to use
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86 @param by(jid.JID, None): jid to use or None to use client.jid
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87 """
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88 sid_elt = element.addElement((NS_SID, "stanza-id"))
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89 sid_elt["by"] = client.jid.userhost() if by is None else by.userhost()
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90 sid_elt["id"] = stanza_id
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91
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92 def getOriginId(self, element):
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93 """Return origin-id if found in element
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94
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95 @param element(domish.Element): element to parse
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96 @return (unicode, None): origin-id if found
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97 """
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98 try:
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99 origin_elt = next(element.elements(NS_SID, "origin-id"))
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100 except StopIteration:
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101 return None
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102 else:
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103 return origin_elt.getAttribute("id")
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104
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105 def addOriginId(self, element, origin_id=None):
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106 """Add a <origin-id/> to a stanza
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107
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108 @param element(domish.Element): stanza where the <origin-id/> must be added
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109 @param origin_id(str): id to use, None to automatically generate
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110 @return (str): origin_id
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111 """
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112 if origin_id is None:
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113 origin_id = str(uuid.uuid4())
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114 sid_elt = element.addElement((NS_SID, "origin-id"))
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115 sid_elt["id"] = origin_id
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116 return origin_id
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117
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118 def getHandler(self, client):
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119 return XEP_0359_handler()
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120
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121
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122 @implementer(disco.IDisco)
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123 class XEP_0359_handler(xmlstream.XMPPHandler):
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124
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125 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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126 return [disco.DiscoFeature(NS_SID)]
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127
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
128 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
129 return []