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annotate sat/plugins/plugin_xep_0261.py @ 2846:58ea675d0f05

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quick frontend (app): added AUTO_RESYNC attribute in QuickApp, when set (default) the resync method is called on all widgets automatically: if AUTO_RESYNC is False, frontend must call itself the resync method. This is useful to improve performance, resynchronising all widgets at once may be resource intensive, and it may be more efficient to resync a widget only when it is visible.
author Goffi <goffi@goffi.org>
date Sun, 10 Mar 2019 18:02:42 +0100
parents 003b8b4b56a7
children 69e4716d6268
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for Jingle (XEP-0261)
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5 # Copyright (C) 2009-2019 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 sat.core.i18n import _
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21 from sat.core.constants import Const as C
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22 from sat.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 implements
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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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34
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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.registerTransport(
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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 getHandler(self, client):
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64 return XEP_0261_handler()
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65
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66 def jingleSessionInit(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"] = unicode(transport_data["block_size"])
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72 transport_elt["sid"] = transport_data["sid"] = unicode(uuid.uuid4())
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73 return transport_elt
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74
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75 def jingleHandler(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 peer_jid = session["peer_jid"]
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88 sid = transport_data["sid"]
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89 stream_object = content_data["stream_object"]
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90 if action == self._j.A_START:
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91 block_size = transport_data["block_size"]
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92 d = self._ibb.startStream(
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93 client, stream_object, peer_jid, sid, block_size
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94 )
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95 d.chainDeferred(content_data["finished_d"])
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96 else:
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97 d = self._ibb.createSession(client, stream_object, peer_jid, sid)
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98 d.chainDeferred(content_data["finished_d"])
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99 else:
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100 log.warning(u"FIXME: unmanaged action {}".format(action))
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101 return transport_elt
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102
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103
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104 class XEP_0261_handler(XMPPHandler):
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105 implements(iwokkel.IDisco)
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106
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107 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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108 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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109
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110 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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111 return []