Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0261.py @ 4309:b56b1eae7994

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component email gateway: add multicasting: XEP-0033 multicasting is now supported both for incoming and outgoing messages. XEP-0033 metadata are converted to suitable Email headers and vice versa. Email address and JID are both supported, and delivery is done by the gateway when suitable on incoming messages. rel 450
author Goffi <goffi@goffi.org>
date Thu, 26 Sep 2024 16:12:01 +0200
parents 0d7bb4df2343
children
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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 )
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102 d.chainDeferred(content_data["finished_d"])
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103 else:
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104 log.warning("FIXME: unmanaged action {}".format(action))
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105 return transport_elt
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106
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107
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108 @implementer(iwokkel.IDisco)
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109 class XEP_0261_handler(XMPPHandler):
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110
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111 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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112 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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113
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114 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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115 return []