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annotate sat/plugins/plugin_xep_0359.py @ 4002:5245b675f7ad

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plugin XEP-0313: don't wait for MAM to be retrieved in connection workflow: MAM retrieval can be long, and can be done after connection, message just need to be sorted when being inserted (i.e. frontends must do insort). To avoid blocking connection for too long and result in bad UX and timeout risk, one2one MAM message are not retrieved in background.
author Goffi <goffi@goffi.org>
date Fri, 10 Mar 2023 17:22:45 +0100
parents 8289ac1b34f4
children 524856bd7b19
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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 sat.core.constants import Const as C
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27 from sat.core import exceptions
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28 from sat.core.i18n import _
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29 from sat.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.registerNamespace("stanza_id", NS_SID)
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54 host.trigger.add("message_parse", self._message_parseTrigger)
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55 host.trigger.add("sendMessageData", self._sendMessageDataTrigger)
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56
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57 def _message_parseTrigger(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.getStanzaId(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.getOriginId(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 _sendMessageDataTrigger(self, client, mess_data):
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68 origin_id = mess_data["extra"].get("origin_id")
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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.addOriginId(message_elt, origin_id)
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74
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75 def getStanzaId(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 addStanzaId(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 getOriginId(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 addOriginId(self, element, origin_id=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 if origin_id is None:
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127 origin_id = str(uuid.uuid4())
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128 sid_elt = element.addElement((NS_SID, "origin-id"))
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129 sid_elt["id"] = origin_id
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130 return origin_id
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131
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132 def getHandler(self, client):
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133 return XEP_0359_handler()
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134
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135
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ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
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136 @implementer(disco.IDisco)
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137 class XEP_0359_handler(xmlstream.XMPPHandler):
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138
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139 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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140 return [disco.DiscoFeature(NS_SID)]
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141
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142 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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143 return []