Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0372.py @ 4100:810921c33a47

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tools (common/template): add filter to get media types: Add 2 filters to get main type and subtype of media type. Jinja2 and Nunjucks don't handle slices in the same way (Python way for Jinja2, JS way for Nunjucks), making it difficult to retrieve main type of a media from media type. Thoses filters work in both cases.
author Goffi <goffi@goffi.org>
date Thu, 22 Jun 2023 15:49:06 +0200
parents 4b842c1fb686
children 0d7bb4df2343
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-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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153 recipient: str,
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154 anchor: str,
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155 type_: str,
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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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163 client,
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164 uri=extra.get("uri"),
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165 type_=type_,
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166 anchor=anchor,
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Goffi <goffi@goffi.org>
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167 to_jid=recipient_jid
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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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172 client: "SatXMPPEntity",
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173 uri: Optional[str] = None,
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174 type_: str = "mention",
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175 begin: Optional[int] = None,
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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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179 to_jid: Optional[jid.JID] = None
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180 ) -> None:
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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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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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188 @param end: optional end index
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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>
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190 is not already in the wrapping message element. In other words, it's the
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191 object where the reference appears.
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192 @param message_elt: wrapping <message> element, if not set a new one will be
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parents:
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193 generated
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194 @param to_jid: destinee of the reference. If not specified, "to" attribute of
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195 message_elt will be used.
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196
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197 """
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198 if uri is None:
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199 if to_jid is None:
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200 raise exceptions.InternalError(
68a11b95a7d3 plugin XEP-0372: References implementation:
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201 '"to_jid" must be set if "uri is None"'
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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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205 message_elt = domish.Element((None, "message"))
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206
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207 if to_jid is not None:
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208 message_elt["to"] = to_jid.full()
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
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209 else:
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
parents:
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210 try:
68a11b95a7d3 plugin XEP-0372: References implementation:
Goffi <goffi@goffi.org>
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211 to_jid = jid.JID(message_elt["to"])
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diff changeset
212 except (KeyError, RuntimeError):
68a11b95a7d3 plugin XEP-0372: References implementation:
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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>
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215 '{message_elt.toXml()}'
68a11b95a7d3 plugin XEP-0372: References implementation:
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216 )
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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])
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68a11b95a7d3 plugin XEP-0372: References implementation:
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diff changeset
220 client.send(message_elt)
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221
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222
68a11b95a7d3 plugin XEP-0372: References implementation:
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223 @implementer(iwokkel.IDisco)
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224 class XEP_0372_Handler(XMPPHandler):
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225
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226 def getDiscoInfo(self, requestor, service, nodeIdentifier=""):
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parents:
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227 return [disco.DiscoFeature(NS_REFS)]
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Goffi <goffi@goffi.org>
parents:
diff changeset
228
68a11b95a7d3 plugin XEP-0372: References implementation:
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229 def getDiscoItems(self, requestor, service, nodeIdentifier=""):
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230 return []