Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0359.py @ 4180:b86912d3fd33

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plugin IP: fix use of legacy URL + coroutine use: An https:/salut-a-toi.org URL was used to retrieve external IP, but it's not valid anymore, resulting in an exception. This feature is currently disabled. Also moved several methods from legacy inline callbacks to coroutines.
author Goffi <goffi@goffi.org>
date Sat, 09 Dec 2023 14:30:54 +0100
parents 2729d424dee7
children 6784d07b99c8
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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) 2009-2021 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 typing import Optional
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22 import uuid
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23 from zope.interface import implementer
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24 from twisted.words.protocols.jabber import xmlstream
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25 from wokkel import disco
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26 from libervia.backend.core.constants import Const as C
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27 from libervia.backend.core import exceptions
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28 from libervia.backend.core.i18n import _
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29 from libervia.backend.core.log import getLogger
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30 from twisted.words.xish import domish
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31
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32 log = getLogger(__name__)
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35 PLUGIN_INFO = {
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36 C.PI_NAME: "Unique and Stable Stanza IDs",
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37 C.PI_IMPORT_NAME: "XEP-0359",
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38 C.PI_TYPE: "XEP",
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39 C.PI_PROTOCOLS: ["XEP-0359"],
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40 C.PI_MAIN: "XEP_0359",
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41 C.PI_HANDLER: "yes",
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42 C.PI_DESCRIPTION: _("""Implementation of Unique and Stable Stanza IDs"""),
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43 }
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44
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45 NS_SID = "urn:xmpp:sid:0"
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47
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48 class XEP_0359(object):
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49
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50 def __init__(self, host):
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51 log.info(_("Unique and Stable Stanza IDs plugin initialization"))
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52 self.host = host
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53 host.register_namespace("stanza_id", NS_SID)
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54 host.trigger.add("message_parse", self._message_parse_trigger)
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55 host.trigger.add("send_message_data", self._send_message_data_trigger)
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56
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57 def _message_parse_trigger(self, client, message_elt, mess_data):
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58 """Check if message has a stanza-id"""
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59 stanza_id = self.get_stanza_id(message_elt, client.jid.userhostJID())
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60 if stanza_id is not None:
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61 mess_data['extra']['stanza_id'] = stanza_id
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62 origin_id = self.get_origin_id(message_elt)
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63 if origin_id is not None:
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64 mess_data['extra']['origin_id'] = origin_id
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65 return True
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66
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67 def _send_message_data_trigger(self, client, mess_data):
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68 origin_id = mess_data["extra"].setdefault("origin_id", mess_data.get("uid"))
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69 if not origin_id:
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70 origin_id = str(uuid.uuid4())
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71 mess_data["extra"]["origin_id"] = origin_id
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72 message_elt = mess_data["xml"]
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73 self.add_origin_id(message_elt, origin_id)
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74
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75 def get_stanza_id(self, element, by):
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76 """Return stanza-id if found in element
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77
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78 @param element(domish.Element): element to parse
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79 @param by(jid.JID): entity which should have set a stanza-id
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80 @return (unicode, None): stanza-id if found
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81 """
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82 stanza_id = None
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83 for stanza_elt in element.elements(NS_SID, "stanza-id"):
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84 if stanza_elt.getAttribute("by") == by.full():
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85 if stanza_id is not None:
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86 # we must not have more than one element (§3 #4)
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87 raise exceptions.DataError(
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88 "More than one corresponding stanza-id found!")
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89 stanza_id = stanza_elt.getAttribute("id")
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90 # we don't break to be sure that there is no more than one element
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91 # with this "by" attribute
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92
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93 return stanza_id
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94
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95 def add_stanza_id(self, client, element, stanza_id, by=None):
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96 """Add a <stanza-id/> to a stanza
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97
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98 @param element(domish.Element): stanza where the <stanza-id/> must be added
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99 @param stanza_id(unicode): id to use
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100 @param by(jid.JID, None): jid to use or None to use client.jid
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101 """
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102 sid_elt = element.addElement((NS_SID, "stanza-id"))
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103 sid_elt["by"] = client.jid.userhost() if by is None else by.userhost()
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104 sid_elt["id"] = stanza_id
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105
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106 def get_origin_id(self, element: domish.Element) -> Optional[str]:
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107 """Return origin-id if found in element
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108
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109 @param element: element to parse
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110 @return: origin-id if found
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111 """
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112 try:
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113 origin_elt = next(element.elements(NS_SID, "origin-id"))
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114 except StopIteration:
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115 return None
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116 else:
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117 return origin_elt.getAttribute("id")
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118
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119 def add_origin_id(self, element: domish.Element, origin_id: str) -> None:
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120 """Add a <origin-id/> to a stanza
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121
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122 @param element(domish.Element): stanza where the <origin-id/> must be added
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123 @param origin_id(str): id to use, None to automatically generate
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124 @return (str): origin_id
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125 """
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126 sid_elt = element.addElement((NS_SID, "origin-id"))
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127 sid_elt["id"] = origin_id
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128
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129 def get_handler(self, client):
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130 return XEP_0359_handler()
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131
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132
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133 @implementer(disco.IDisco)
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134 class XEP_0359_handler(xmlstream.XMPPHandler):
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135
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136 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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137 return [disco.DiscoFeature(NS_SID)]
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138
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139 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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140 return []