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annotate libervia/backend/plugins/plugin_xep_0191.py @ 4340:ea72364131d5 default tip @

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doc (components): Update Email Gateway documentation: A section has been added to explain how attachments are handled. fix 453
author Goffi <goffi@goffi.org>
date Tue, 03 Dec 2024 00:53:18 +0100
parents 0d7bb4df2343
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python3
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2
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3 # Libervia plugin for XEP-0191
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4 # Copyright (C) 2009-2022 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, Set
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20
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21 from twisted.words.protocols.jabber import xmlstream, jid
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22 from twisted.words.xish import domish
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23 from twisted.internet import defer
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24 from zope.interface import implementer
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25 from wokkel import disco, iwokkel
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26
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27 from libervia.backend.core.constants import Const as C
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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 libervia.backend.core.core_types import SatXMPPEntity
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31 from libervia.backend.tools.utils import ensure_deferred
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32
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33 log = getLogger(__name__)
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34
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35 PLUGIN_INFO = {
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36 C.PI_NAME: "Blokcing Commands",
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37 C.PI_IMPORT_NAME: "XEP-0191",
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38 C.PI_TYPE: C.PLUG_TYPE_XEP,
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39 C.PI_MODES: C.PLUG_MODE_BOTH,
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40 C.PI_PROTOCOLS: ["XEP-0191"],
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41 C.PI_DEPENDENCIES: ["XEP-0060", "XEP-0376"],
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42 C.PI_MAIN: "XEP_0191",
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43 C.PI_HANDLER: "yes",
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44 C.PI_DESCRIPTION: _("""Implement the protocol to block users or whole domains"""),
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45 }
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46
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47 NS_BLOCKING = "urn:xmpp:blocking"
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48 IQ_BLOCK_PUSH = f'{C.IQ_SET}/block[@xmlns="{NS_BLOCKING}"]'
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49 IQ_UNBLOCK_PUSH = f'{C.IQ_SET}/unblock[@xmlns="{NS_BLOCKING}"]'
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50
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51
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52 class XEP_0191:
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53
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54 def __init__(self, host):
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55 log.info(_("Blocking Command initialization"))
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56 host.register_namespace("blocking", NS_BLOCKING)
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57 self.host = host
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58 host.bridge.add_method(
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59 "blocking_list",
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60 ".plugin",
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61 in_sign="s",
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62 out_sign="as",
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63 method=self._block_list,
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64 async_=True,
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65 )
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66 host.bridge.add_method(
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67 "blocking_block",
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68 ".plugin",
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69 in_sign="ass",
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70 out_sign="",
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71 method=self._block,
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72 async_=True,
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73 )
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74 host.bridge.add_method(
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75 "blocking_unblock",
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76 ".plugin",
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77 in_sign="ass",
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78 out_sign="",
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79 method=self._unblock,
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80 async_=True,
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81 )
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82
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83 def get_handler(self, client):
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84 return XEP_0191_Handler(self)
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85
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86 @ensure_deferred
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87 async def _block_list(self, profile_key=C.PROF_KEY_NONE) -> List[str]:
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88 client = self.host.get_client(profile_key)
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89 blocked_jids = await self.block_list(client)
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90 return [j.full() for j in blocked_jids]
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91
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92 async def block_list(self, client: SatXMPPEntity) -> Set[jid.JID]:
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93 await self.host.check_feature(client, NS_BLOCKING)
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94 iq_elt = client.IQ("get")
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95 iq_elt.addElement((NS_BLOCKING, "blocklist"))
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96 iq_result_elt = await iq_elt.send()
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97 try:
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98 blocklist_elt = next(iq_result_elt.elements(NS_BLOCKING, "blocklist"))
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99 except StopIteration:
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100 log.warning(f"missing <blocklist> element: {iq_result_elt.toXml()}")
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101 return []
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102 blocked_jids = set()
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103 for item_elt in blocklist_elt.elements(NS_BLOCKING, "item"):
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104 try:
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105 blocked_jid = jid.JID(item_elt["jid"])
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106 except (RuntimeError, AttributeError):
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107 log.warning(f"Invalid <item> element in block list: {item_elt.toXml()}")
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108 else:
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109 blocked_jids.add(blocked_jid)
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110
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111 return blocked_jids
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112
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113 def _block(self, entities: List[str], profile_key: str = C.PROF_KEY_NONE) -> str:
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114 client = self.host.get_client(profile_key)
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115 return defer.ensureDeferred(
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116 self.block(client, [jid.JID(entity) for entity in entities])
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117 )
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118
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119 async def block(self, client: SatXMPPEntity, entities: List[jid.JID]) -> None:
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120 await self.host.check_feature(client, NS_BLOCKING)
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121 iq_elt = client.IQ("set")
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122 block_elt = iq_elt.addElement((NS_BLOCKING, "block"))
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123 for entity in entities:
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124 item_elt = block_elt.addElement("item")
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125 item_elt["jid"] = entity.full()
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126 await iq_elt.send()
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127
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128 def _unblock(self, entities: List[str], profile_key: str = C.PROF_KEY_NONE) -> None:
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129 client = self.host.get_client(profile_key)
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130 return defer.ensureDeferred(self.unblock(client, [jid.JID(e) for e in entities]))
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131
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132 async def unblock(self, client: SatXMPPEntity, entities: List[jid.JID]) -> None:
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133 await self.host.check_feature(client, NS_BLOCKING)
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134 iq_elt = client.IQ("set")
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135 unblock_elt = iq_elt.addElement((NS_BLOCKING, "unblock"))
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136 for entity in entities:
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137 item_elt = unblock_elt.addElement("item")
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138 item_elt["jid"] = entity.full()
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139 await iq_elt.send()
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140
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141 def on_block_push(self, iq_elt: domish.Element, client: SatXMPPEntity) -> None:
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142 # TODO: send notification to user
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143 iq_elt.handled = True
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144 for item_elt in iq_elt.block.elements(NS_BLOCKING, "item"):
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145 try:
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146 entity = jid.JID(item_elt["jid"])
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147 except (KeyError, RuntimeError):
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148 log.warning(f"invalid item received in block push: {item_elt.toXml()}")
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149 else:
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150 log.info(f"{entity.full()} has been blocked for {client.profile}")
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151 iq_result_elt = xmlstream.toResponse(iq_elt, "result")
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152 client.send(iq_result_elt)
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153
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154 def on_unblock_push(self, iq_elt: domish.Element, client: SatXMPPEntity) -> None:
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155 # TODO: send notification to user
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156 iq_elt.handled = True
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157 items = list(iq_elt.unblock.elements(NS_BLOCKING, "item"))
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158 if not items:
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159 log.info(f"All entities have been unblocked for {client.profile}")
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160 else:
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161 for item_elt in items:
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162 try:
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163 entity = jid.JID(item_elt["jid"])
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164 except (KeyError, RuntimeError):
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165 log.warning(
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166 f"invalid item received in unblock push: {item_elt.toXml()}"
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167 )
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168 else:
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169 log.info(f"{entity.full()} has been unblocked for {client.profile}")
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170 iq_result_elt = xmlstream.toResponse(iq_elt, "result")
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171 client.send(iq_result_elt)
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172
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173
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174 @implementer(iwokkel.IDisco)
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175 class XEP_0191_Handler(xmlstream.XMPPHandler):
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176
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177 def __init__(self, plugin_parent: XEP_0191):
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178 self.plugin_parent = plugin_parent
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179
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180 def connectionInitialized(self):
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181 self.xmlstream.addObserver(
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182 IQ_BLOCK_PUSH, self.plugin_parent.on_block_push, client=self.parent
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183 )
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184 self.xmlstream.addObserver(
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185 IQ_UNBLOCK_PUSH, self.plugin_parent.on_unblock_push, client=self.parent
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186 )
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187
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188 def getDiscoInfo(self, requestor, service, nodeIdentifier=""):
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189 return [disco.DiscoFeature(NS_BLOCKING)]
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190
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191 def getDiscoItems(self, requestor, service, nodeIdentifier=""):
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192 return []