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annotate src/plugins/plugin_xep_0261.py @ 1721:f6533aa7da7a

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we are in dev version again
author Goffi <goffi@goffi.org>
date Mon, 07 Dec 2015 13:10:44 +0100
parents 25906c0dbc63
children d17772b0fe22
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bfef1934a8f3 plugin XEP-0261: jingle in-band bystream first draft
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1 #!/usr/bin/python
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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, 2010, 2011, 2012, 2013, 2014, 2015 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.log import getLogger
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22 log = getLogger(__name__)
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23 from wokkel import disco, iwokkel
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24 from zope.interface import implements
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25 from twisted.words.xish import domish
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26 import uuid
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27
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28 try:
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29 from twisted.words.protocols.xmlstream import XMPPHandler
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30 except ImportError:
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31 from wokkel.subprotocols import XMPPHandler
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32
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33
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34 NS_JINGLE_IBB = 'urn:xmpp:jingle:transports:ibb:1'
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35
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36 PLUGIN_INFO = {
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37 "name": "Jingle In-Band Bytestreams",
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38 "import_name": "XEP-0261",
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39 "type": "XEP",
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40 "protocols": ["XEP-0261"],
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41 "dependencies": ["XEP-0166", "XEP-0047"],
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42 "main": "XEP_0261",
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43 "handler": "yes",
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44 "description": _("""Implementation of Jingle In-Band Bytestreams""")
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45 }
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46
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47
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48 class XEP_0261(object):
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49 NAMESPACE = NS_JINGLE_IBB # used by XEP-0260 plugin for transport-replace
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50
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51 def __init__(self, host):
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52 log.info(_("plugin Jingle In-Band Bytestreams"))
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53 self.host = host
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54 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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55 self._ibb = host.plugins["XEP-0047"] # and in-band bytestream
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56 self._j.registerTransport(NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000) # must be the lowest priority
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57
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58 def getHandler(self, profile):
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59 return XEP_0261_handler()
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60
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61 def jingleSessionInit(self, session, content_name, profile):
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62 transport_elt = domish.Element((NS_JINGLE_IBB, "transport"))
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63 content_data = session['contents'][content_name]
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64 transport_data = content_data['transport_data']
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65 transport_data['block_size'] = self._ibb.BLOCK_SIZE
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66 transport_elt['block-size'] = unicode(transport_data['block_size'])
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67 transport_elt['sid'] = transport_data['sid'] = unicode(uuid.uuid4())
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68 return transport_elt
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69
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70 def jingleHandler(self, action, session, content_name, transport_elt, profile):
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71 content_data = session['contents'][content_name]
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72 transport_data = content_data['transport_data']
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73 if action in (self._j.A_SESSION_ACCEPT,
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74 self._j.A_ACCEPTED_ACK,
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75 self._j.A_TRANSPORT_ACCEPT):
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76 pass
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77 elif action in (self._j.A_SESSION_INITIATE, self._j.A_TRANSPORT_REPLACE):
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78 transport_data['sid'] = transport_elt['sid']
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79 elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER):
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80 peer_jid = session['peer_jid']
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81 sid = transport_data['sid']
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82 file_obj = content_data['file_obj']
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83 if action == self._j.A_START:
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84 block_size = transport_data['block_size']
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85 d = self._ibb.startStream(file_obj, peer_jid, sid, block_size, profile)
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86 d.chainDeferred(content_data['finished_d'])
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87 else:
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88 d = self._ibb.createSession(file_obj, peer_jid, sid, profile)
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89 d.chainDeferred(content_data['finished_d'])
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90 else:
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91 log.warning(u"FIXME: unmanaged action {}".format(action))
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92 return transport_elt
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93
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94
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95 class XEP_0261_handler(XMPPHandler):
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96 implements(iwokkel.IDisco)
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97
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98 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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99 return [disco.DiscoFeature(NS_JINGLE_IBB)]
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100
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101 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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102 return []