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annotate libervia/backend/plugins/plugin_xep_0444.py @ 4127:5fc26a6ef113

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author Goffi <goffi@goffi.org>
date Tue, 03 Oct 2023 16:27:51 +0200
parents 4b842c1fb686
children 04cdcb3fd713
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rev   line source
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1f88ca90c3de plugin XEP-0444: Message Reactions implementation:
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1 #!/usr/bin/env python3
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2
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3 # Libervia plugin for XEP-0444
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 from typing import List, Iterable
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20 from copy import deepcopy
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21
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22 from twisted.words.protocols.jabber import jid, xmlstream
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23 from twisted.words.xish import domish
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24 from twisted.internet import defer
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25 from wokkel import disco, iwokkel
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26 from zope.interface import implementer
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27
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28 from libervia.backend.core.constants import Const as C
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29 from libervia.backend.core.i18n import _
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30 from libervia.backend.core.log import getLogger
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31 from libervia.backend.core import exceptions
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32 from libervia.backend.core.core_types import SatXMPPEntity
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33 from libervia.backend.memory.sqla_mapping import History
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34
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35 log = getLogger(__name__)
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36
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37 PLUGIN_INFO = {
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38 C.PI_NAME: "Message Reactions",
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39 C.PI_IMPORT_NAME: "XEP-0444",
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40 C.PI_TYPE: C.PLUG_TYPE_XEP,
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41 C.PI_MODES: C.PLUG_MODE_BOTH,
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42 C.PI_PROTOCOLS: ["XEP-0444"],
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43 C.PI_DEPENDENCIES: ["XEP-0334"],
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44 C.PI_MAIN: "XEP_0444",
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45 C.PI_HANDLER: "yes",
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46 C.PI_DESCRIPTION: _("""Message Reactions implementation"""),
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47 }
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48
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49 NS_REACTIONS = "urn:xmpp:reactions:0"
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50
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51
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52 class XEP_0444:
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53
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54 def __init__(self, host):
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55 log.info(_("Message Reactions initialization"))
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56 host.register_namespace("reactions", NS_REACTIONS)
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57 self.host = host
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58 self._h = host.plugins["XEP-0334"]
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59 host.bridge.add_method(
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60 "message_reactions_set",
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61 ".plugin",
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62 in_sign="ssas",
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63 out_sign="",
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64 method=self._reactions_set,
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65 async_=True,
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66 )
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67 host.trigger.add("message_received", self._message_received_trigger)
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68
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69 def get_handler(self, client):
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70 return XEP_0444_Handler()
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71
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72 async def _message_received_trigger(
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73 self,
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74 client: SatXMPPEntity,
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75 message_elt: domish.Element,
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76 post_treat: defer.Deferred
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77 ) -> bool:
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78 return True
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79
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80 def _reactions_set(self, message_id: str, profile: str, reactions: List[str]) -> None:
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81 client = self.host.get_client(profile)
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82 return defer.ensureDeferred(
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83 self.set_reactions(client, message_id)
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84 )
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85
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86 def send_reactions(
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87 self,
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88 client: SatXMPPEntity,
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89 dest_jid: jid.JID,
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90 message_id: str,
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91 reactions: Iterable[str]
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92 ) -> None:
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93 """Send the <message> stanza containing the reactions
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94
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95 @param dest_jid: recipient of the reaction
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96 @param message_id: either <origin-id> or message's ID
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97 see https://xmpp.org/extensions/xep-0444.html#business-id
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98 """
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99 message_elt = domish.Element((None, "message"))
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100 message_elt["from"] = client.jid.full()
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101 message_elt["to"] = dest_jid.full()
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102 reactions_elt = message_elt.addElement((NS_REACTIONS, "reactions"))
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103 reactions_elt["id"] = message_id
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104 for r in set(reactions):
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105 reactions_elt.addElement("reaction", content=r)
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106 self._h.add_hint_elements(message_elt, [self._h.HINT_STORE])
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107 client.send(message_elt)
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108
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109 async def add_reactions_to_history(
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110 self,
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111 history: History,
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112 from_jid: jid.JID,
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113 reactions: Iterable[str]
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114 ) -> None:
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115 """Update History instance with given reactions
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116
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117 @param history: storage History instance
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118 will be updated in DB
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119 "summary" field of history.extra["reactions"] will also be updated
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120 @param from_jid: author of the reactions
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121 @param reactions: list of reactions
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122 """
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123 history.extra = deepcopy(history.extra) if history.extra else {}
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124 h_reactions = history.extra.setdefault("reactions", {})
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125 # reactions mapped by originating JID
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126 by_jid = h_reactions.setdefault("by_jid", {})
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127 # reactions are sorted to in summary to keep a consistent order
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128 h_reactions["by_jid"][from_jid.userhost()] = sorted(list(set(reactions)))
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129 h_reactions["summary"] = sorted(list(set().union(*by_jid.values())))
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130 await self.host.memory.storage.session_add(history)
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131
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132 async def set_reactions(
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133 self,
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134 client: SatXMPPEntity,
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135 message_id: str,
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136 reactions: Iterable[str]
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137 ) -> None:
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138 """Set and replace reactions to a message
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139
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140 @param message_id: internal ID of the message
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141 @param rections: lsit of emojis to used to react to the message
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142 use empty list to remove all reactions
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143 """
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144 if not message_id:
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145 raise ValueError("message_id can't be empty")
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146 history = await self.host.memory.storage.get(
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147 client, History, History.uid, message_id,
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148 joined_loads=[History.messages, History.subjects]
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149 )
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150 if history is None:
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151 raise exceptions.NotFound(
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152 f"message to retract not found in database ({message_id})"
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153 )
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154 mess_id = history.origin_id or history.stanza_id
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155 if not mess_id:
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156 raise exceptions.DataError(
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157 "target message has neither origin-id nor message-id, we can't send a "
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158 "reaction"
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159 )
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160 await self.add_reactions_to_history(history, client.jid, reactions)
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161 self.send_reactions(client, history.dest_jid, mess_id, reactions)
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162
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163
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164 @implementer(iwokkel.IDisco)
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165 class XEP_0444_Handler(xmlstream.XMPPHandler):
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166
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167 def getDiscoInfo(self, requestor, service, nodeIdentifier=""):
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168 return [disco.DiscoFeature(NS_REACTIONS)]
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169
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170 def getDiscoItems(self, requestor, service, nodeIdentifier=""):
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171 return []