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annotate sat/plugins/plugin_xep_0334.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 dcebc585c29f
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 Delayed Delivery (XEP-0334)
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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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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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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.i18n import _, D_
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22 from sat.core.log import getLogger
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23
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24 log = getLogger(__name__)
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25 from sat.core.constants import Const as C
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26
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27 from sat.tools.common import data_format
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29 from wokkel import disco, iwokkel
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30
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31 from twisted.words.protocols.jabber import xmlstream
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32 from zope.interface import implementer
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33 from textwrap import dedent
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36 PLUGIN_INFO = {
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37 C.PI_NAME: "Message Processing Hints",
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38 C.PI_IMPORT_NAME: "XEP-0334",
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39 C.PI_TYPE: "XEP",
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40 C.PI_PROTOCOLS: ["XEP-0334"],
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41 C.PI_MAIN: "XEP_0334",
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42 C.PI_HANDLER: "yes",
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43 C.PI_DESCRIPTION: D_("""Implementation of Message Processing Hints"""),
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44 C.PI_USAGE: dedent(
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45 D_(
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46 """\
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47 Frontends can use HINT_* constants in mess_data['extra'] in a serialized 'hints' dict.
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48 Internal plugins can use directly addHint([HINT_* constant]).
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49 Will set mess_data['extra']['history'] to 'skipped' when no store is requested and message is not saved in history."""
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50 )
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51 ),
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52 }
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53
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54 NS_HINTS = "urn:xmpp:hints"
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56
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57 class XEP_0334(object):
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58 HINT_NO_PERMANENT_STORE = "no-permanent-store"
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59 HINT_NO_STORE = "no-store"
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60 HINT_NO_COPY = "no-copy"
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61 HINT_STORE = "store"
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62 HINTS = (HINT_NO_PERMANENT_STORE, HINT_NO_STORE, HINT_NO_COPY, HINT_STORE)
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64 def __init__(self, host):
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65 log.info(_("Message Processing Hints plugin initialization"))
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66 self.host = host
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67 host.trigger.add("sendMessage", self.sendMessageTrigger)
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68 host.trigger.add("messageReceived", self.messageReceivedTrigger, priority=-1000)
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69
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70 def getHandler(self, client):
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71 return XEP_0334_handler()
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72
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73 def addHint(self, mess_data, hint):
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74 if hint == self.HINT_NO_COPY and not mess_data["to"].resource:
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75 log.error(
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76 "{hint} can only be used with full jids! Ignoring it.".format(hint=hint)
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77 )
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78 return
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79 hints = mess_data.setdefault("hints", set())
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80 if hint in self.HINTS:
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81 hints.add(hint)
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82 else:
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83 log.error("Unknown hint: {}".format(hint))
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84
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85 def addHintElements(self, message_elt, hints):
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86 """Add hints elements to message stanza
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87
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88 @param message_elt(domish.Element): stanza where hints must be added
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89 @param hints(iterable(unicode)): hints to add
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90 """
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91 for hint in hints:
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92 message_elt.addElement((NS_HINTS, hint))
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93
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94 def _sendPostXmlTreatment(self, mess_data):
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95 if "hints" in mess_data:
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96 self.addHintElements(mess_data["xml"], mess_data["hints"])
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97 return mess_data
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98
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99 def sendMessageTrigger(
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100 self, client, mess_data, pre_xml_treatments, post_xml_treatments
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101 ):
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102 """Add the hints element to the message to be sent"""
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103 if "hints" in mess_data["extra"]:
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104 for hint in data_format.dict2iter("hints", mess_data["extra"], pop=True):
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105 self.addHint(hint)
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106
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107 post_xml_treatments.addCallback(self._sendPostXmlTreatment)
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108 return True
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109
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110 def _receivedSkipHistory(self, mess_data):
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111 mess_data["history"] = C.HISTORY_SKIP
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112 return mess_data
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113
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114 def messageReceivedTrigger(self, client, message_elt, post_treat):
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115 """Check for hints in the received message"""
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116 for elt in message_elt.elements():
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117 if elt.uri == NS_HINTS and elt.name in (
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118 self.HINT_NO_PERMANENT_STORE,
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119 self.HINT_NO_STORE,
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120 ):
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121 log.debug("history will be skipped for this message, as requested")
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122 post_treat.addCallback(self._receivedSkipHistory)
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123 break
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124 return True
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125
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126
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127 @implementer(iwokkel.IDisco)
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128 class XEP_0334_handler(xmlstream.XMPPHandler):
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129
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130 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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Goffi <goffi@goffi.org>
parents: 1955
diff changeset
131 return [disco.DiscoFeature(NS_HINTS)]
1279
d84905c3e124 plugin XEP-0334: first draft
souliane <souliane@mailoo.org>
parents:
diff changeset
132
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
133 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
1279
d84905c3e124 plugin XEP-0334: first draft
souliane <souliane@mailoo.org>
parents:
diff changeset
134 return []