99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# SAT plugin for Jingle (XEP-0261)
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# Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sat.core.i18n import _
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from sat.core.log import getLogger
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log = getLogger(__name__)
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from wokkel import disco, iwokkel
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from zope.interface import implements
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from twisted.words.xish import domish
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import uuid
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try:
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from twisted.words.protocols.xmlstream import XMPPHandler
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except ImportError:
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from wokkel.subprotocols import XMPPHandler
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NS_JINGLE_IBB = 'urn:xmpp:jingle:transports:ibb:1'
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PLUGIN_INFO = {
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"name": "Jingle In-Band Bytestreams",
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"import_name": "XEP-0261",
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"type": "XEP",
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"protocols": ["XEP-0261"],
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"dependencies": ["XEP-0166", "XEP-0047"],
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"main": "XEP_0261",
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"handler": "yes",
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"description": _("""Implementation of Jingle In-Band Bytestreams""")
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}
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class XEP_0261(object):
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def __init__(self, host):
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log.info(_("plugin Jingle In-Band Bytestreams"))
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self.host = host
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self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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self._ibb = host.plugins["XEP-0047"] # and in-band bytestream
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self._j.registerTransport(NS_JINGLE_IBB, self._j.TRANSPORT_STREAMING, self, -10000) # must be the lowest priority
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def getHandler(self, profile):
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return XEP_0261_handler()
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def jingleSessionInit(self, session, content_name, profile):
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transport_elt = domish.Element((NS_JINGLE_IBB, "transport"))
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content_data = session['contents'][content_name]
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transport_data = content_data['transport_data']
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transport_data['block_size'] = self._ibb.BLOCK_SIZE
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transport_elt['block-size'] = unicode(transport_data['block_size'])
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transport_elt['sid'] = transport_data['sid'] = unicode(uuid.uuid4())
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return transport_elt
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def jingleHandler(self, action, session, content_name, transport_elt, profile):
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content_data = session['contents'][content_name]
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transport_data = content_data['transport_data']
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if action in (self._j.A_SESSION_ACCEPT, self._j.A_ACCEPTED_ACK):
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pass
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elif action == self._j.A_SESSION_INITIATE:
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transport_data['sid'] = transport_elt['sid']
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elif action in (self._j.A_START, self._j.A_PREPARE_RESPONDER):
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peer_jid = session['peer_jid']
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sid = transport_data['sid']
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file_obj = content_data['file_obj']
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if action == self._j.A_START:
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block_size = transport_data['block_size']
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d = self._ibb.startStream(file_obj, peer_jid, sid, block_size, profile)
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d.chainDeferred(content_data['finished_d'])
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else:
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d = self._ibb.createSession(file_obj, peer_jid, sid, profile)
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d.chainDeferred(content_data['finished_d'])
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else:
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log.warning(u"FIXME: unmanaged action {}".format(action))
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return transport_elt
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class XEP_0261_handler(XMPPHandler):
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implements(iwokkel.IDisco)
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def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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return [disco.DiscoFeature(NS_JINGLE_IBB)]
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def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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return []
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