Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0261.py @ 4242:8acf46ed7f36

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frontends: remote control implementation: This is the frontends common part of remote control implementation. It handle the creation of WebRTC session, and management of inputs. For now the reception use freedesktop.org Desktop portal, and works mostly with Wayland based Desktop Environments. rel 436
author Goffi <goffi@goffi.org>
date Sat, 11 May 2024 13:52:43 +0200
parents e11b13418ba6
children 0d7bb4df2343
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT plugin for Jingle (XEP-0261)
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5 # Copyright (C) 2009-2021 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 libervia.backend.core.i18n import _
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21 from libervia.backend.core.constants import Const as C
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22 from libervia.backend.core.log import getLogger
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23 from libervia.backend.plugins.plugin_xep_0166.models import BaseTransportHandler
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24
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25 log = getLogger(__name__)
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26 from wokkel import disco, iwokkel
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27 from zope.interface import implementer
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28 from twisted.words.xish import domish
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29 import uuid
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30
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31 try:
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32 from twisted.words.protocols.xmlstream import XMPPHandler
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33 except ImportError:
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34 from wokkel.subprotocols import XMPPHandler
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36
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37 NS_JINGLE_IBB = "urn:xmpp:jingle:transports:ibb:1"
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38
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39 PLUGIN_INFO = {
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40 C.PI_NAME: "Jingle In-Band Bytestreams",
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41 C.PI_IMPORT_NAME: "XEP-0261",
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42 C.PI_TYPE: "XEP",
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43 C.PI_MODES: C.PLUG_MODE_BOTH,
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44 C.PI_PROTOCOLS: ["XEP-0261"],
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45 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0047"],
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46 C.PI_MAIN: "XEP_0261",
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47 C.PI_HANDLER: "yes",
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48 C.PI_DESCRIPTION: _("""Implementation of Jingle In-Band Bytestreams"""),
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49 }
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51
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52 class XEP_0261(BaseTransportHandler):
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53 NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace
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54
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55 def __init__(self, host):
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56 log.info(_("plugin Jingle In-Band Bytestreams"))
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57 self.host = host
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58 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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59 self._ibb = host.plugins["XEP-0047"] # and in-band bytestream
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60 self._j.register_transport(
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61 NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000
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62 ) # must be the lowest priority
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63
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64 def get_handler(self, client):
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65 return XEP_0261_handler()
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66
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67 def jingle_session_init(self, client, session, content_name):
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68 transport_elt = domish.Element((NS_JINGLE_IBB, "transport"))
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69 content_data = session["contents"][content_name]
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70 transport_data = content_data["transport_data"]
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71 transport_data["block_size"] = self._ibb.BLOCK_SIZE
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72 transport_elt["block-size"] = str(transport_data["block_size"])
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73 transport_elt["sid"] = transport_data["sid"] = str(uuid.uuid4())
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74 return transport_elt
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75
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76 def jingle_handler(self, client, action, session, content_name, transport_elt):
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77 content_data = session["contents"][content_name]
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78 transport_data = content_data["transport_data"]
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79 if action in (
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80 self._j.A_SESSION_ACCEPT,
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81 self._j.A_ACCEPTED_ACK,
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82 self._j.A_TRANSPORT_ACCEPT,
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83 ):
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84 pass
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85 elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE):
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86 transport_data["sid"] = transport_elt["sid"]
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87 elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER):
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88 local_jid = session["local_jid"]
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89 peer_jid = session["peer_jid"]
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90 sid = transport_data["sid"]
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91 stream_object = content_data["stream_object"]
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92 if action == self._j.A_START:
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93 block_size = transport_data["block_size"]
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94 d = self._ibb.start_stream(
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95 client, stream_object, local_jid, peer_jid, sid, block_size
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96 )
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97 d.chainDeferred(content_data["finished_d"])
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98 else:
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99 d = self._ibb.create_session(
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100 client, stream_object, local_jid, peer_jid, sid)
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101 d.chainDeferred(content_data["finished_d"])
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102 else:
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103 log.warning("FIXME: unmanaged action {}".format(action))
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104 return transport_elt
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105
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106
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107 @implementer(iwokkel.IDisco)
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108 class XEP_0261_handler(XMPPHandler):
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109
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110 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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111 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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112
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113 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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114 return []