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annotate sat/plugins/plugin_xep_0095.py @ 2862:b2e898384c25

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quick_frontend (app): progress callbacks handling: in addition to listeners, a frontend can now register progression callback and errback which are called when the given progressing action is finished. Those callbacks can be registered using registerProgressCbs or specified in actionManager.
author Goffi <goffi@goffi.org>
date Wed, 20 Mar 2019 09:08:47 +0100
parents 003b8b4b56a7
children ab2696e34d29
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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 managing xep-0095
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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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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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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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 sat.core import exceptions
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26 from twisted.words.protocols.jabber import xmlstream
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27 from twisted.words.protocols.jabber import error
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28 from zope.interface import implements
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29 from wokkel import disco
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30 from wokkel import iwokkel
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31 import uuid
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34 PLUGIN_INFO = {
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35 C.PI_NAME: "XEP 0095 Plugin",
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36 C.PI_IMPORT_NAME: "XEP-0095",
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37 C.PI_TYPE: "XEP",
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38 C.PI_PROTOCOLS: ["XEP-0095"],
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39 C.PI_MAIN: "XEP_0095",
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40 C.PI_HANDLER: "yes",
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41 C.PI_DESCRIPTION: _("""Implementation of Stream Initiation"""),
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42 }
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45 IQ_SET = '/iq[@type="set"]'
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46 NS_SI = "http://jabber.org/protocol/si"
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47 SI_REQUEST = IQ_SET + '/si[@xmlns="' + NS_SI + '"]'
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48 SI_PROFILE_HEADER = "http://jabber.org/protocol/si/profile/"
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49 SI_ERROR_CONDITIONS = ("bad-profile", "no-valid-streams")
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51
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52 class XEP_0095(object):
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53 def __init__(self, host):
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54 log.info(_("Plugin XEP_0095 initialization"))
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55 self.host = host
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56 self.si_profiles = {} # key: SI profile, value: callback
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57
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58 def getHandler(self, client):
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59 return XEP_0095_handler(self)
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61 def registerSIProfile(self, si_profile, callback):
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62 """Add a callback for a SI Profile
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64 @param si_profile(unicode): SI profile name (e.g. file-transfer)
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65 @param callback(callable): method to call when the profile name is asked
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66 """
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67 self.si_profiles[si_profile] = callback
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68
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69 def unregisterSIProfile(self, si_profile):
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70 try:
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71 del self.si_profiles[si_profile]
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72 except KeyError:
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73 log.error(
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74 u"Trying to unregister SI profile [{}] which was not registered".format(
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75 si_profile
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76 )
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77 )
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78
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79 def streamInit(self, iq_elt, client):
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80 """This method is called on stream initiation (XEP-0095 #3.2)
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82 @param iq_elt: IQ element
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83 """
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84 log.info(_("XEP-0095 Stream initiation"))
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85 iq_elt.handled = True
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86 si_elt = iq_elt.elements(NS_SI, "si").next()
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87 si_id = si_elt["id"]
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88 si_mime_type = iq_elt.getAttribute("mime-type", "application/octet-stream")
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89 si_profile = si_elt["profile"]
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90 si_profile_key = (
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91 si_profile[len(SI_PROFILE_HEADER) :]
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92 if si_profile.startswith(SI_PROFILE_HEADER)
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93 else si_profile
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94 )
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95 if si_profile_key in self.si_profiles:
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96 # We know this SI profile, we call the callback
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97 self.si_profiles[si_profile_key](client, iq_elt, si_id, si_mime_type, si_elt)
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98 else:
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99 # We don't know this profile, we send an error
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100 self.sendError(client, iq_elt, "bad-profile")
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101
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102 def sendError(self, client, request, condition):
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103 """Send IQ error as a result
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104
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105 @param request(domish.Element): original IQ request
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106 @param condition(str): error condition
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107 """
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108 if condition in SI_ERROR_CONDITIONS:
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109 si_condition = condition
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110 condition = "bad-request"
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111 else:
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112 si_condition = None
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113
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114 iq_error_elt = error.StanzaError(condition).toResponse(request)
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115 if si_condition is not None:
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116 iq_error_elt.error.addElement((NS_SI, si_condition))
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117
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118 client.send(iq_error_elt)
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119
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parents: 2483
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120 def acceptStream(self, client, iq_elt, feature_elt, misc_elts=None):
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Goffi <goffi@goffi.org>
parents: 1409
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121 """Send the accept stream initiation answer
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parents: 1409
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122
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Goffi <goffi@goffi.org>
parents: 1409
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123 @param iq_elt(domish.Element): initial SI request
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parents: 1409
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124 @param feature_elt(domish.Element): 'feature' element containing stream method to use
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parents: 1409
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125 @param misc_elts(list[domish.Element]): list of elements to add
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parents:
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126 """
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
127 log.info(_("sending stream initiation accept answer"))
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Goffi <goffi@goffi.org>
parents: 1409
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128 if misc_elts is None:
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parents: 1409
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129 misc_elts = []
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130 result_elt = xmlstream.toResponse(iq_elt, "result")
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131 si_elt = result_elt.addElement((NS_SI, "si"))
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
132 si_elt.addChild(feature_elt)
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
133 for elt in misc_elts:
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
134 si_elt.addChild(elt)
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Goffi <goffi@goffi.org>
parents: 1934
diff changeset
135 client.send(result_elt)
385
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parents:
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136
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
137 def _parseOfferResult(self, iq_elt):
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
138 try:
d04d7402b8e9 plugins XEP-0020, XEP-0065, XEP-0095, XEP-0096: fixed file copy with Stream Initiation:
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
139 si_elt = iq_elt.elements(NS_SI, "si").next()
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
140 except StopIteration:
d04d7402b8e9 plugins XEP-0020, XEP-0065, XEP-0095, XEP-0096: fixed file copy with Stream Initiation:
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
141 log.warning(u"No <si/> element found in result while expected")
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
142 raise exceptions.DataError
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
143 return (iq_elt, si_elt)
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
144
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
145 def proposeStream(
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
146 self,
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
147 client,
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
148 to_jid,
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
149 si_profile,
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
150 feature_elt,
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parents: 2562
diff changeset
151 misc_elts,
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Goffi <goffi@goffi.org>
parents: 2562
diff changeset
152 mime_type="application/octet-stream",
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parents: 2562
diff changeset
153 ):
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Goffi <goffi@goffi.org>
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154 """Propose a stream initiation
385
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parents:
diff changeset
155
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
156 @param to_jid(jid.JID): recipient
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
157 @param si_profile(unicode): Stream initiation profile (XEP-0095)
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
158 @param feature_elt(domish.Element): feature element, according to XEP-0020
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
159 @param misc_elts(list[domish.Element]): list of elements to add
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
160 @param mime_type(unicode): stream mime type
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
161 @return (tuple): tuple with:
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
162 - session id (unicode)
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
163 - (D(domish_elt, domish_elt): offer deferred which returl a tuple
d04d7402b8e9 plugins XEP-0020, XEP-0065, XEP-0095, XEP-0096: fixed file copy with Stream Initiation:
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
164 with iq_elt and si_elt
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
165 """
d04d7402b8e9 plugins XEP-0020, XEP-0065, XEP-0095, XEP-0096: fixed file copy with Stream Initiation:
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
166 offer = client.IQ()
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 572
diff changeset
167 sid = str(uuid.uuid4())
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3265a2639182 massive (preventive) addition of 'u' (unicode) before the strings passed to logging functions
souliane <souliane@mailoo.org>
parents: 1396
diff changeset
168 log.debug(_(u"Stream Session ID: %s") % offer["id"])
385
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parents:
diff changeset
169
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
170 offer["from"] = client.jid.full()
385
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parents:
diff changeset
171 offer["to"] = to_jid.full()
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172 si = offer.addElement("si", NS_SI)
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parents: 2562
diff changeset
173 si["id"] = sid
385
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parents:
diff changeset
174 si["mime-type"] = mime_type
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Goffi <goffi@goffi.org>
parents:
diff changeset
175 si["profile"] = si_profile
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Goffi <goffi@goffi.org>
parents:
diff changeset
176 for elt in misc_elts:
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Goffi <goffi@goffi.org>
parents:
diff changeset
177 si.addChild(elt)
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Goffi <goffi@goffi.org>
parents:
diff changeset
178 si.addChild(feature_elt)
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Goffi <goffi@goffi.org>
parents:
diff changeset
179
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
180 offer_d = offer.send()
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
181 offer_d.addCallback(self._parseOfferResult)
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
182 return sid, offer_d
385
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parents:
diff changeset
183
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parents: 572
diff changeset
184
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
185 class XEP_0095_handler(xmlstream.XMPPHandler):
385
41fdaeb005bc plugins: Stream initiation (xep-0095) implementation
Goffi <goffi@goffi.org>
parents:
diff changeset
186 implements(iwokkel.IDisco)
587
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diff changeset
187
385
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diff changeset
188 def __init__(self, plugin_parent):
41fdaeb005bc plugins: Stream initiation (xep-0095) implementation
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parents:
diff changeset
189 self.plugin_parent = plugin_parent
41fdaeb005bc plugins: Stream initiation (xep-0095) implementation
Goffi <goffi@goffi.org>
parents:
diff changeset
190 self.host = plugin_parent.host
41fdaeb005bc plugins: Stream initiation (xep-0095) implementation
Goffi <goffi@goffi.org>
parents:
diff changeset
191
41fdaeb005bc plugins: Stream initiation (xep-0095) implementation
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parents:
diff changeset
192 def connectionInitialized(self):
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193 self.xmlstream.addObserver(
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parents: 2562
diff changeset
194 SI_REQUEST, self.plugin_parent.streamInit, client=self.parent
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diff changeset
195 )
385
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196
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diff changeset
197 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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diff changeset
198 return [disco.DiscoFeature(NS_SI)] + [
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diff changeset
199 disco.DiscoFeature(
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200 u"http://jabber.org/protocol/si/profile/{}".format(profile_name)
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parents: 2562
diff changeset
201 )
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parents: 2562
diff changeset
202 for profile_name in self.plugin_parent.si_profiles
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parents: 2562
diff changeset
203 ]
385
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204
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diff changeset
205 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
385
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Goffi <goffi@goffi.org>
parents:
diff changeset
206 return []