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annotate libervia/backend/plugins/plugin_xep_0298.py @ 4294:a0ed5c976bf8

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component conferences, plugin XEP-0167, XEP-0298: add stream user metadata: A/V conference now adds user metadata about the stream it is forwarding through XEP-0298. This is parsed and added to metadata during confirmation on client side. rel 448
author Goffi <goffi@goffi.org>
date Tue, 06 Aug 2024 23:43:11 +0200
parents dd0891d0b22b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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1 #!/usr/bin/env python3
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2
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3
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4 # Libervia plugin to handle events
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5 # Copyright (C) 2009-2022 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from urllib.parse import quote, unquote
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21 from twisted.words.protocols.jabber import jid
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22 from twisted.words.xish import domish
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23 from libervia.backend.core.core_types import SatXMPPEntity
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24 from libervia.backend.core.i18n import _
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25 from libervia.backend.core.constants import Const as C
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26 from libervia.backend.core.log import getLogger
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27 from wokkel import disco, iwokkel
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28 from zope.interface import implementer
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29 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
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30
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31 from libervia.backend.plugins.plugin_xep_0166 import XEP_0166
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32
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33 log = getLogger(__name__)
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34
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35
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36 PLUGIN_INFO = {
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37 C.PI_NAME: "Events",
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38 C.PI_IMPORT_NAME: "XEP-0298",
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39 C.PI_TYPE: "XEP",
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40 C.PI_MODES: C.PLUG_MODE_BOTH,
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41 C.PI_PROTOCOLS: [],
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42 C.PI_DEPENDENCIES: ["XEP-0167"],
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43 C.PI_MAIN: "XEP_0298",
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44 C.PI_HANDLER: "yes",
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45 C.PI_DESCRIPTION: _(
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46 "Delivering Conference Information to Jingle Participants (Coin). This plugin "
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
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47 "is used to associate metadata about uses an call states in multi-party calls."
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48 ),
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49 }
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50
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51 NS_COIN = "urn:xmpp:coin:1"
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52 NS_CONFERENCE_INFO = "urn:ietf:params:xml:ns:conference-info"
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53
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54
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55 class XEP_0298:
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56 namespace = NS_COIN
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57
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58 def __init__(self, host):
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59 log.info(f"plugin {PLUGIN_INFO[C.PI_NAME]!r} initialization")
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60 self.host = host
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61 self._j: XEP_0166 = host.plugins["XEP-0166"]
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62 host.trigger.add(
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63 "XEP-0167_jingle_session_init", self._jingle_session_init_trigger
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64 )
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65 host.trigger.add("XEP-0167_jingle_handler", self._jingle_handler_trigger)
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66
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67 def get_handler(self, client):
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68 return CoinHandler(self)
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69
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70 def _jingle_session_init_trigger(
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71 self,
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72 client: SatXMPPEntity,
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73 session: dict,
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74 content_name: str,
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75 media: str,
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76 media_data: dict,
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77 desc_elt: domish.Element,
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78 ) -> None:
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79 """Check for the presence of "user" metadata, and add relevant elements."""
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80 if client.profile == "conferences":
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81 if content_name != next(iter(session["contents"].keys())):
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82 # We only apply metadata for the first content, as it is global.
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83 return
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84 try:
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85 user = session["metadata"]["user"]
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86 except KeyError:
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87 return
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88 jingle_elt = session["jingle_elt"]
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89 conference_info_elt = self.add_conference_info(jingle_elt, True)
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90 self.add_user(conference_info_elt, user)
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91
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92 async def _jingle_handler_trigger(
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93 self,
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94 client: SatXMPPEntity,
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95 action: str,
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96 session: dict,
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97 content_name: str,
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98 desc_elt: domish.Element,
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99 ) -> None:
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100 # this is a session metadata, so we only generate it on the first content
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101 if action == self._j.A_PREPARE_CONFIRMATION and content_name == next(
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102 iter(session["contents"])
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103 ):
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104 jingle_elt = session["jingle_elt"]
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105 infos = self.parse(jingle_elt)
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106 try:
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107 user = infos["info"]["users"][0]
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108 except (KeyError, IndexError):
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109 pass
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110 else:
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111 session.setdefault("metadata", {})["peer_user"] = user
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112
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113 def add_conference_info(
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114 self, jingle_elt: domish.Element, is_focus: bool = False, **kwargs
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
115 ) -> domish.Element:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
116 """Create and return a <conference_info> element
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
117
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
118 @param jingle_elt: parent element
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
119 @param kwargs: attributes of the element.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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120 @return: created <conference-info> element.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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121 """
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
122 conference_info_elt = jingle_elt.addElement(
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
123 (NS_CONFERENCE_INFO, "conference-info"),
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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124 )
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
125 if is_focus:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
126 conference_info_elt["isfocus"] = C.BOOL_TRUE
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
127 conference_info_elt.attributes.update(kwargs)
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
128 return conference_info_elt
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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129
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
130 def add_user(
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
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131 self, conference_info_elt: domish.Element, entity: jid.JID
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
132 ) -> domish.Element:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
133 """Add an user to a cconference info element.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
134
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
135 If the parent <users> doesn't exist, it will be created.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
136 @param conference_info_elt: <conference-info> element where the <user> element
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
137 need to be added
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
138 @param entity: XMPP JID to use as entity.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
139 @return: created <user> element.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
140 """
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
141 try:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
142 users_elt = next(conference_info_elt.elements(NS_CONFERENCE_INFO, "users"))
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
143 except StopIteration:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
144 users_elt = conference_info_elt.addElement("users")
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
145
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
146 user_elt = users_elt.addElement("user")
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
147 user_elt["entity"] = f"xmpp:{quote(entity.userhost())}"
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
148 return user_elt
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
149
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
150 def parse(self, jingle_elt: domish.Element) -> dict:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
151 """Parse a Jingle element and return a dictionary with conference info if present.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
152
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
153 @param jingle_elt: Jingle element to parse.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
154 @return: Dictionary with "info" key if conference info is found.
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
155 """
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
156 try:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
157 conference_info_elt = next(
4294
a0ed5c976bf8 component conferences, plugin XEP-0167, XEP-0298: add stream user metadata:
Goffi <goffi@goffi.org>
parents: 4292
diff changeset
158 jingle_elt.elements(NS_CONFERENCE_INFO, "conference-info")
4292
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
159 )
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
160 except StopIteration:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
161 return {}
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
162
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
163 users = []
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
164 try:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
165 users_elt = next(conference_info_elt.elements(NS_CONFERENCE_INFO, "users"))
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
166 for user_elt in users_elt.elements(NS_CONFERENCE_INFO, "user"):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
167 entity = user_elt.getAttribute("entity")
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
168 if entity.startswith("xmpp:"):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
169 try:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
170 entity = jid.JID(unquote(entity[5:]))
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
171 users.append(entity)
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
172 except Exception as e:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
173 log.warning(f"Failed to parse entity {entity!r}: {e}")
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
174 else:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
175 log.warning(f"Ignoring non-XMPP entity {entity!r}")
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
176 except StopIteration:
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
177 pass
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
178
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
179 return {"info": {"users": users}}
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
180
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
181
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
182 @implementer(iwokkel.IDisco)
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
183 class CoinHandler(XMPPHandler):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
184
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
185 def __init__(self, plugin_parent):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
186 self.plugin_parent = plugin_parent
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
187
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
188 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
189 return [
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
190 disco.DiscoFeature(NS_COIN),
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
191 ]
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
192
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
193 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
dd0891d0b22b plugin XEP-0298: Delivering Conference Information to Jingle Participants (Coin) implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
194 return []