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annotate libervia/backend/plugins/plugin_xep_0359.py @ 4335:430d5d99a740

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plugin XEP-0358: "Publishing Available Jingle Sessions" implementation: rel 453
author Goffi <goffi@goffi.org>
date Tue, 03 Dec 2024 00:13:07 +0100
parents 0d7bb4df2343
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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121 """
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122 try:
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123 origin_elt = next(element.elements(NS_SID, "origin-id"))
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124 except StopIteration:
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125 return None
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Goffi <goffi@goffi.org>
parents: 3028
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126 else:
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Goffi <goffi@goffi.org>
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127 return origin_elt.getAttribute("id")
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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
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130 """Add a <origin-id/> to a stanza
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Goffi <goffi@goffi.org>
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131
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132 @param element(domish.Element): stanza where the <origin-id/> must be added
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133 @param origin_id(str): id to use, None to automatically generate
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134 @return (str): origin_id
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Goffi <goffi@goffi.org>
parents: 3028
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135 """
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Goffi <goffi@goffi.org>
parents: 3028
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136 sid_elt = element.addElement((NS_SID, "origin-id"))
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Goffi <goffi@goffi.org>
parents: 3028
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137 sid_elt["id"] = origin_id
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Goffi <goffi@goffi.org>
parents: 3028
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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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parents:
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140 return XEP_0359_handler()
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Goffi <goffi@goffi.org>
parents:
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141
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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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parents:
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144 class XEP_0359_handler(xmlstream.XMPPHandler):
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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=""):
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Goffi <goffi@goffi.org>
parents:
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147 return [disco.DiscoFeature(NS_SID)]
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Goffi <goffi@goffi.org>
parents:
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148
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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 []