Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0261.py @ 4177:0f1a4ffcd419

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doc (cli/blog): Document new `--alt-link` option
author Goffi <goffi@goffi.org>
date Tue, 05 Dec 2023 13:14:55 +0100
parents 4b842c1fb686
children e11b13418ba6
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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
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24 log = getLogger(__name__)
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25 from wokkel import disco, iwokkel
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26 from zope.interface import implementer
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27 from twisted.words.xish import domish
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28 import uuid
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29
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30 try:
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31 from twisted.words.protocols.xmlstream import XMPPHandler
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32 except ImportError:
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33 from wokkel.subprotocols import XMPPHandler
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35
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36 NS_JINGLE_IBB = "urn:xmpp:jingle:transports:ibb:1"
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37
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38 PLUGIN_INFO = {
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39 C.PI_NAME: "Jingle In-Band Bytestreams",
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40 C.PI_IMPORT_NAME: "XEP-0261",
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41 C.PI_TYPE: "XEP",
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42 C.PI_MODES: C.PLUG_MODE_BOTH,
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43 C.PI_PROTOCOLS: ["XEP-0261"],
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44 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0047"],
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45 C.PI_MAIN: "XEP_0261",
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46 C.PI_HANDLER: "yes",
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47 C.PI_DESCRIPTION: _("""Implementation of Jingle In-Band Bytestreams"""),
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48 }
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49
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50
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51 class XEP_0261(object):
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52 NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace
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53
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54 def __init__(self, host):
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55 log.info(_("plugin Jingle In-Band Bytestreams"))
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56 self.host = host
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57 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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58 self._ibb = host.plugins["XEP-0047"] # and in-band bytestream
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59 self._j.register_transport(
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60 NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000
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61 ) # must be the lowest priority
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62
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63 def get_handler(self, client):
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64 return XEP_0261_handler()
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65
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66 def jingle_session_init(self, client, session, content_name):
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67 transport_elt = domish.Element((NS_JINGLE_IBB, "transport"))
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68 content_data = session["contents"][content_name]
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69 transport_data = content_data["transport_data"]
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70 transport_data["block_size"] = self._ibb.BLOCK_SIZE
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71 transport_elt["block-size"] = str(transport_data["block_size"])
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72 transport_elt["sid"] = transport_data["sid"] = str(uuid.uuid4())
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73 return transport_elt
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74
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75 def jingle_handler(self, client, action, session, content_name, transport_elt):
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76 content_data = session["contents"][content_name]
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77 transport_data = content_data["transport_data"]
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78 if action in (
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79 self._j.A_SESSION_ACCEPT,
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80 self._j.A_ACCEPTED_ACK,
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81 self._j.A_TRANSPORT_ACCEPT,
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82 ):
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83 pass
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84 elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE):
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85 transport_data["sid"] = transport_elt["sid"]
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86 elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER):
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87 local_jid = session["local_jid"]
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88 peer_jid = session["peer_jid"]
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89 sid = transport_data["sid"]
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90 stream_object = content_data["stream_object"]
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91 if action == self._j.A_START:
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92 block_size = transport_data["block_size"]
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93 d = self._ibb.start_stream(
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94 client, stream_object, local_jid, peer_jid, sid, block_size
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95 )
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96 d.chainDeferred(content_data["finished_d"])
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97 else:
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98 d = self._ibb.create_session(
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99 client, stream_object, local_jid, peer_jid, sid)
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100 d.chainDeferred(content_data["finished_d"])
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101 else:
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102 log.warning("FIXME: unmanaged action {}".format(action))
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103 return transport_elt
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104
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105
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106 @implementer(iwokkel.IDisco)
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107 class XEP_0261_handler(XMPPHandler):
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108
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109 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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110 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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111
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112 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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113 return []