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annotate src/plugins/plugin_xep_0261.py @ 2553:39b10475f56b

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author Goffi <goffi@goffi.org>
date Sat, 31 Mar 2018 18:42:01 +0200
parents 67cc54b01a12
children
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1934
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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) 2009-2018 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 log = getLogger(__name__)
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24 from wokkel import disco, iwokkel
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25 from zope.interface import implements
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26 from twisted.words.xish import domish
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27 import uuid
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28
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29 try:
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30 from twisted.words.protocols.xmlstream import XMPPHandler
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31 except ImportError:
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32 from wokkel.subprotocols import XMPPHandler
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33
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34
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35 NS_JINGLE_IBB = 'urn:xmpp:jingle:transports:ibb:1'
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36
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37 PLUGIN_INFO = {
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38 C.PI_NAME: "Jingle In-Band Bytestreams",
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39 C.PI_IMPORT_NAME: "XEP-0261",
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40 C.PI_TYPE: "XEP",
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41 C.PI_MODES: C.PLUG_MODE_BOTH,
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42 C.PI_PROTOCOLS: ["XEP-0261"],
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43 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0047"],
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44 C.PI_MAIN: "XEP_0261",
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45 C.PI_HANDLER: "yes",
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46 C.PI_DESCRIPTION: _("""Implementation of Jingle In-Band Bytestreams""")
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47 }
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48
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49
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50 class XEP_0261(object):
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51 NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace
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52
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53 def __init__(self, host):
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54 log.info(_("plugin Jingle In-Band Bytestreams"))
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55 self.host = host
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56 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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57 self._ibb = host.plugins["XEP-0047"] # and in-band bytestream
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58 self._j.registerTransport(NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000) # must be the lowest priority
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59
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60 def getHandler(self, client):
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61 return XEP_0261_handler()
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62
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63 def jingleSessionInit(self, client, session, content_name):
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64 transport_elt = domish.Element((NS_JINGLE_IBB, "transport"))
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65 content_data = session['contents'][content_name]
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66 transport_data = content_data['transport_data']
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67 transport_data['block_size'] = self._ibb.BLOCK_SIZE
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68 transport_elt['block-size'] = unicode(transport_data['block_size'])
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69 transport_elt['sid'] = transport_data['sid'] = unicode(uuid.uuid4())
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70 return transport_elt
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71
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72 def jingleHandler(self, client, action, session, content_name, transport_elt):
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73 content_data = session['contents'][content_name]
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74 transport_data = content_data['transport_data']
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75 if action in (self._j.A_SESSION_ACCEPT,
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76 self._j.A_ACCEPTED_ACK,
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77 self._j.A_TRANSPORT_ACCEPT):
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78 pass
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79 elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE):
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80 transport_data['sid'] = transport_elt['sid']
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81 elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER):
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82 peer_jid = session['peer_jid']
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83 sid = transport_data['sid']
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84 stream_object = content_data['stream_object']
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85 if action == self._j.A_START:
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86 block_size = transport_data['block_size']
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87 d = self._ibb.startStream(client, stream_object, peer_jid, sid, block_size)
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88 d.chainDeferred(content_data['finished_d'])
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89 else:
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90 d = self._ibb.createSession(client, stream_object, peer_jid, sid)
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91 d.chainDeferred(content_data['finished_d'])
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92 else:
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93 log.warning(u"FIXME: unmanaged action {}".format(action))
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94 return transport_elt
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95
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96
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97 class XEP_0261_handler(XMPPHandler):
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98 implements(iwokkel.IDisco)
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99
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100 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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101 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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102
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103 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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104 return []