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annotate libervia/backend/plugins/plugin_xep_0359.py @ 4351:6a0a081485b8

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plugin autocrypt: Autocrypt protocol implementation: Implementation of autocrypt: `autocrypt` header is checked, and if present and no public key is known for the peer, the key is imported. `autocrypt` header is also added to outgoing message (only if an email gateway is detected). For the moment, the JID is use as identifier, but the real email used by gateway should be used in the future. rel 456
author Goffi <goffi@goffi.org>
date Fri, 28 Feb 2025 09:23:35 +0100
parents 0d7bb4df2343
children
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rev   line source
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1 #!/usr/bin/env python3
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2
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3 # Libervia plugin for Message Archive Management (XEP-0359)
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4 # Copyright (C) 2009-2023 Jérôme Poisson (goffi@goffi.org)
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5 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from typing import Optional
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21 import uuid
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22
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23 from twisted.words.protocols.jabber import xmlstream
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24 from twisted.words.xish import domish
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25 from wokkel import disco
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26 from zope.interface import implementer
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27
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28 from libervia.backend.core import exceptions
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29 from libervia.backend.core.constants import Const as C
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30 from libervia.backend.core.core_types import SatXMPPEntity
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31 from libervia.backend.core.i18n import _
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32 from libervia.backend.core.log import getLogger
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33 from libervia.backend.models.core import MessageData
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34
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35 log = getLogger(__name__)
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36
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37
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38 PLUGIN_INFO = {
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39 C.PI_NAME: "Unique and Stable Stanza IDs",
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40 C.PI_IMPORT_NAME: "XEP-0359",
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41 C.PI_TYPE: "XEP",
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42 C.PI_MODES: C.PLUG_MODE_BOTH,
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43 C.PI_PROTOCOLS: ["XEP-0359"],
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44 C.PI_MAIN: "XEP_0359",
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45 C.PI_HANDLER: "yes",
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46 C.PI_DESCRIPTION: _("""Implementation of Unique and Stable Stanza IDs"""),
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47 }
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48
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49 NS_SID = "urn:xmpp:sid:0"
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50
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51
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52 class XEP_0359(object):
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53
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54 def __init__(self, host):
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55 log.info(_("Unique and Stable Stanza IDs plugin initialization"))
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56 self.host = host
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57 host.register_namespace("stanza_id", NS_SID)
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58 host.trigger.add("message_parse", self._message_parse_trigger)
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59 host.trigger.add("send_message_data", self._send_message_data_trigger)
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60
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61 def _message_parse_trigger(
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62 self, client: SatXMPPEntity, message_elt: domish.Element, mess_data: MessageData
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63 ) -> bool:
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64 """Check if message has a stanza-id"""
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65 stanza_id = self.get_stanza_id(message_elt, client.jid.userhostJID())
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66 if stanza_id is not None:
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67 mess_data["extra"]["stanza_id"] = stanza_id
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68 try:
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69 origin_id = self.get_origin_id(message_elt) or message_elt["id"]
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70 except KeyError:
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71 pass
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72 else:
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73 mess_data["extra"]["origin_id"] = origin_id
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74 return True
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75
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76 def _send_message_data_trigger(self, client, mess_data):
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77 origin_id = mess_data["extra"].setdefault("origin_id", mess_data.get("uid"))
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78 if not origin_id:
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79 origin_id = str(uuid.uuid4())
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80 mess_data["extra"]["origin_id"] = origin_id
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81 message_elt = mess_data["xml"]
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82 self.add_origin_id(message_elt, origin_id)
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83
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84 def get_stanza_id(self, element, by):
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85 """Return stanza-id if found in element
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86
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87 @param element(domish.Element): element to parse
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88 @param by(jid.JID): entity which should have set a stanza-id
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89 @return (unicode, None): stanza-id if found
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90 """
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91 stanza_id = None
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92 for stanza_elt in element.elements(NS_SID, "stanza-id"):
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93 if stanza_elt.getAttribute("by") == by.full():
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94 if stanza_id is not None:
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95 # we must not have more than one element (§3 #4)
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96 raise exceptions.DataError(
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97 "More than one corresponding stanza-id found!"
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98 )
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99 stanza_id = stanza_elt.getAttribute("id")
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100 # we don't break to be sure that there is no more than one element
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101 # with this "by" attribute
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102
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103 return stanza_id
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104
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105 def add_stanza_id(self, client, element, stanza_id, by=None):
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106 """Add a <stanza-id/> to a stanza
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107
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108 @param element(domish.Element): stanza where the <stanza-id/> must be added
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109 @param stanza_id(unicode): id to use
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110 @param by(jid.JID, None): jid to use or None to use client.jid
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111 """
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112 sid_elt = element.addElement((NS_SID, "stanza-id"))
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113 sid_elt["by"] = client.jid.userhost() if by is None else by.userhost()
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114 sid_elt["id"] = stanza_id
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115
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116 def get_origin_id(self, element: domish.Element) -> Optional[str]:
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117 """Return origin-id if found in element
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118
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119 @param element: element to parse
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120 @return: origin-id if found
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Goffi <goffi@goffi.org>
parents: 3028
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121 """
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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122 try:
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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123 origin_elt = next(element.elements(NS_SID, "origin-id"))
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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124 except StopIteration:
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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125 return None
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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126 else:
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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127 return origin_elt.getAttribute("id")
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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128
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2729d424dee7 plugin XEP-0359: use same ID as <message> for `origin_id`:
Goffi <goffi@goffi.org>
parents: 4071
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129 def add_origin_id(self, element: domish.Element, origin_id: str) -> None:
3103
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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130 """Add a <origin-id/> to a stanza
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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131
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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132 @param element(domish.Element): stanza where the <origin-id/> must be added
f0f48b4deb35 plugin XEP-0359: handle origin-id
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parents: 3028
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133 @param origin_id(str): id to use, None to automatically generate
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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134 @return (str): origin_id
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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135 """
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
136 sid_elt = element.addElement((NS_SID, "origin-id"))
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
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137 sid_elt["id"] = origin_id
f0f48b4deb35 plugin XEP-0359: handle origin-id
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
138
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3911
diff changeset
139 def get_handler(self, client):
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5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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140 return XEP_0359_handler()
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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141
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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142
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ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
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143 @implementer(disco.IDisco)
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Goffi <goffi@goffi.org>
parents:
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144 class XEP_0359_handler(xmlstream.XMPPHandler):
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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145
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
146 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
147 return [disco.DiscoFeature(NS_SID)]
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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148
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
149 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
5849dcaab99d plugin XEP-0359: Unique and Stable Stanza IDs implementation, first draft
Goffi <goffi@goffi.org>
parents:
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150 return []