Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0372.py @ 4165:81faa85c9cfa

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author Goffi <goffi@goffi.org>
date Tue, 28 Nov 2023 17:41:49 +0100
parents 4b842c1fb686
children 0d7bb4df2343
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68a11b95a7d3 plugin XEP-0372: References implementation:
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1 #!/usr/bin/env python3
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2
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3 # Libervia plugin for XEP-0372
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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 Optional, Dict, Union
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20 from textwrap import dedent
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21 from libervia.backend.core import exceptions
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22 from libervia.backend.tools.common import uri as xmpp_uri
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23
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24 from twisted.internet import defer
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25 from twisted.words.protocols.jabber import jid
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26 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
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27 from twisted.words.xish import domish
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28 from zope.interface import implementer
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29 from wokkel import disco, iwokkel
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30
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31 from libervia.backend.core.constants import Const as C
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32 from libervia.backend.core.i18n import _
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33 from libervia.backend.core.log import getLogger
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34 from libervia.backend.core.core_types import SatXMPPEntity
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35 from libervia.backend.tools.common import data_format
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36
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37
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38 log = getLogger(__name__)
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39
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40 PLUGIN_INFO = {
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41 C.PI_NAME: "References",
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42 C.PI_IMPORT_NAME: "XEP-0372",
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43 C.PI_TYPE: C.PLUG_TYPE_XEP,
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44 C.PI_MODES: C.PLUG_MODE_BOTH,
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45 C.PI_PROTOCOLS: ["XEP-0372"],
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46 C.PI_DEPENDENCIES: ["XEP-0334"],
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47 C.PI_MAIN: "XEP_0372",
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48 C.PI_HANDLER: "yes",
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49 C.PI_DESCRIPTION: _(dedent("""\
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50 XEP-0372 (References) implementation
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51
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52 This plugin implement generic references and mentions.
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53 """)),
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54 }
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55
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56 NS_REFS = "urn:xmpp:reference:0"
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57 ALLOWED_TYPES = ("mention", "data")
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58
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59
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60 class XEP_0372:
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61 namespace = NS_REFS
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62
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63 def __init__(self, host):
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64 log.info(_("References plugin initialization"))
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65 host.register_namespace("refs", NS_REFS)
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66 self.host = host
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67 self._h = host.plugins["XEP-0334"]
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68 host.trigger.add("message_received", self._message_received_trigger)
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69 host.bridge.add_method(
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70 "reference_send",
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71 ".plugin",
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72 in_sign="sssss",
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73 out_sign="",
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74 method=self._send_reference,
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75 async_=False,
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76 )
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77
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78 def get_handler(self, client):
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79 return XEP_0372_Handler()
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80
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81 def ref_element_to_ref_data(
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82 self,
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83 reference_elt: domish.Element
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84 ) -> Dict[str, Union[str, int, dict]]:
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85 ref_data: Dict[str, Union[str, int, dict]] = {
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86 "uri": reference_elt["uri"],
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87 "type": reference_elt["type"]
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88 }
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89
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90 if ref_data["uri"].startswith("xmpp:"):
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91 ref_data["parsed_uri"] = xmpp_uri.parse_xmpp_uri(ref_data["uri"])
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92
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93 for attr in ("begin", "end"):
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94 try:
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95 ref_data[attr] = int(reference_elt[attr])
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96 except (KeyError, ValueError, TypeError):
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97 continue
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98
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99 anchor = reference_elt.getAttribute("anchor")
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100 if anchor is not None:
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101 ref_data["anchor"] = anchor
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102 if anchor.startswith("xmpp:"):
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103 ref_data["parsed_anchor"] = xmpp_uri.parse_xmpp_uri(anchor)
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104 return ref_data
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105
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106 async def _message_received_trigger(
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107 self,
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108 client: SatXMPPEntity,
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109 message_elt: domish.Element,
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110 post_treat: defer.Deferred
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111 ) -> bool:
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112 """Check if a direct invitation is in the message, and handle it"""
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113 reference_elt = next(message_elt.elements(NS_REFS, "reference"), None)
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114 if reference_elt is None:
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115 return True
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116 try:
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117 ref_data = self.ref_element_to_ref_data(reference_elt)
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118 except KeyError:
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119 log.warning("invalid <reference> element: {reference_elt.toXml}")
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120 return True
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121
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122 if not await self.host.trigger.async_point(
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123 "XEP-0372_ref_received", client, message_elt, ref_data
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124 ):
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125 return False
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126 return True
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127
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128 def build_ref_element(
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129 self,
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130 uri: str,
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131 type_: str = "mention",
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132 begin: Optional[int] = None,
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133 end: Optional[int] = None,
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134 anchor: Optional[str] = None,
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135 ) -> domish.Element:
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136 """Build and return the <reference> element"""
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137 if type_ not in ALLOWED_TYPES:
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138 raise ValueError(f"Unknown type: {type_!r}")
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139 reference_elt = domish.Element(
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140 (NS_REFS, "reference"),
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141 attribs={"uri": uri, "type": type_}
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142 )
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143 if begin is not None:
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144 reference_elt["begin"] = str(begin)
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145 if end is not None:
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146 reference_elt["end"] = str(end)
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147 if anchor is not None:
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148 reference_elt["anchor"] = anchor
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149 return reference_elt
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150
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151 def _send_reference(
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152 self,
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Goffi <goffi@goffi.org>
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153 recipient: str,
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Goffi <goffi@goffi.org>
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154 anchor: str,
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Goffi <goffi@goffi.org>
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155 type_: str,
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Goffi <goffi@goffi.org>
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156 extra_s: str,
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Goffi <goffi@goffi.org>
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157 profile_key: str
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Goffi <goffi@goffi.org>
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158 ) -> defer.Deferred:
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159 recipient_jid = jid.JID(recipient)
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160 client = self.host.get_client(profile_key)
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161 extra: dict = data_format.deserialise(extra_s, default={})
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162 self.send_reference(
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Goffi <goffi@goffi.org>
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163 client,
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Goffi <goffi@goffi.org>
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164 uri=extra.get("uri"),
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Goffi <goffi@goffi.org>
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165 type_=type_,
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Goffi <goffi@goffi.org>
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166 anchor=anchor,
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Goffi <goffi@goffi.org>
parents:
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167 to_jid=recipient_jid
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Goffi <goffi@goffi.org>
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168 )
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169
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170 def send_reference(
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171 self,
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Goffi <goffi@goffi.org>
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172 client: "SatXMPPEntity",
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
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173 uri: Optional[str] = None,
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Goffi <goffi@goffi.org>
parents:
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174 type_: str = "mention",
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Goffi <goffi@goffi.org>
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175 begin: Optional[int] = None,
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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176 end: Optional[int] = None,
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177 anchor: Optional[str] = None,
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178 message_elt: Optional[domish.Element] = None,
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Goffi <goffi@goffi.org>
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179 to_jid: Optional[jid.JID] = None
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Goffi <goffi@goffi.org>
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180 ) -> None:
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Goffi <goffi@goffi.org>
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181 """Build and send a reference_elt
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182
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183 @param uri: URI pointing to referenced object (XMPP entity, Pubsub Item, etc)
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Goffi <goffi@goffi.org>
parents:
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184 if not set, "to_jid" will be used to build an URI to the entity
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185 @param type_: type of reference
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186 one of [ALLOWED_TYPES]
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187 @param begin: optional begin index
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Goffi <goffi@goffi.org>
parents:
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188 @param end: optional end index
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Goffi <goffi@goffi.org>
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189 @param anchor: URI of refering object (message, pubsub item), when the refence
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Goffi <goffi@goffi.org>
parents:
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190 is not already in the wrapping message element. In other words, it's the
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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191 object where the reference appears.
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parents:
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192 @param message_elt: wrapping <message> element, if not set a new one will be
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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193 generated
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parents:
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194 @param to_jid: destinee of the reference. If not specified, "to" attribute of
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parents:
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195 message_elt will be used.
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parents:
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196
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197 """
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198 if uri is None:
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Goffi <goffi@goffi.org>
parents:
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199 if to_jid is None:
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
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200 raise exceptions.InternalError(
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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201 '"to_jid" must be set if "uri is None"'
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Goffi <goffi@goffi.org>
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202 )
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203 uri = xmpp_uri.build_xmpp_uri(path=to_jid.full())
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204 if message_elt is None:
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parents:
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205 message_elt = domish.Element((None, "message"))
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parents:
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206
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Goffi <goffi@goffi.org>
parents:
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207 if to_jid is not None:
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
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208 message_elt["to"] = to_jid.full()
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
209 else:
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
210 try:
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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211 to_jid = jid.JID(message_elt["to"])
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
212 except (KeyError, RuntimeError):
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
213 raise exceptions.InternalError(
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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214 'invalid "to" attribute in given message element: '
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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215 '{message_elt.toXml()}'
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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216 )
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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217
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diff changeset
218 message_elt.addChild(self.build_ref_element(uri, type_, begin, end, anchor))
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diff changeset
219 self._h.add_hint_elements(message_elt, [self._h.HINT_STORE])
3830
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
diff changeset
220 client.send(message_elt)
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parents:
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221
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
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222
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
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223 @implementer(iwokkel.IDisco)
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
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224 class XEP_0372_Handler(XMPPHandler):
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225
68a11b95a7d3 plugin XEP-0372: References implementation:
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parents:
diff changeset
226 def getDiscoInfo(self, requestor, service, nodeIdentifier=""):
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
227 return [disco.DiscoFeature(NS_REFS)]
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Goffi <goffi@goffi.org>
parents:
diff changeset
228
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
229 def getDiscoItems(self, requestor, service, nodeIdentifier=""):
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
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230 return []