Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0095.py @ 1773:6e867caf4621
plugin XEP-0060, tmp(wokkel.rsm): small refactoring:
- don't use getRSMResponse anymore: rsm.PubSubClient use a different signature which return items and RSMResponse, this is better than the previous method as if the requested don't call getRSMResponse, there is no memory leak anymore.
- use RSMResponse directly instead of using ext_data, as other extension (like MAM) will be probably be managed with an other workflow
- don't do a useless deep copy of pubsub.PubSubRequest._parameters on each instance anymore
- RSMResponse.parse do now manage parsing of <set/> element directly
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 05 Jan 2016 23:20:22 +0100 |
| parents | d17772b0fe22 |
| children | 2daf7b4c6756 |
| rev | line source |
|---|---|
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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 managing xep-0095 |
| 1766 | 5 # Copyright (C) 2009-2016 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 |
| 771 | 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 sat.core import exceptions |
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25 from twisted.words.protocols.jabber import xmlstream |
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26 from twisted.words.protocols.jabber import error |
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27 from zope.interface import implements |
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28 from wokkel import disco |
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29 from wokkel import iwokkel |
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30 import uuid |
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31 |
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32 |
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33 PLUGIN_INFO = { |
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34 "name": "XEP 0095 Plugin", |
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35 "import_name": "XEP-0095", |
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36 "type": "XEP", |
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37 "protocols": ["XEP-0095"], |
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38 "main": "XEP_0095", |
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39 "handler": "yes", |
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40 "description": _("""Implementation of Stream Initiation""") |
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41 } |
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42 |
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43 |
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44 IQ_SET = '/iq[@type="set"]' |
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45 NS_SI = 'http://jabber.org/protocol/si' |
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46 SI_REQUEST = IQ_SET + '/si[@xmlns="' + NS_SI + '"]' |
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47 SI_PROFILE_HEADER = "http://jabber.org/protocol/si/profile/" |
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48 SI_ERROR_CONDITIONS = ('bad-profile', 'no-valid-streams') |
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49 |
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50 |
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51 class XEP_0095(object): |
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52 |
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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, profile): |
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59 return XEP_0095_handler(self) |
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60 |
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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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63 |
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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(u"Trying to unregister SI profile [{}] which was not registered".format(si_profile)) |
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74 |
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75 def streamInit(self, iq_elt, profile): |
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76 """This method is called on stream initiation (XEP-0095 #3.2) |
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77 |
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78 @param iq_elt: IQ element |
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79 @param profile: %(doc_profile)s""" |
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80 log.info(_("XEP-0095 Stream initiation")) |
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81 iq_elt.handled = True |
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82 si_elt = iq_elt.elements(NS_SI, 'si').next() |
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83 si_id = si_elt['id'] |
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84 si_mime_type = iq_elt.getAttribute('mime-type', 'application/octet-stream') |
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85 si_profile = si_elt['profile'] |
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86 si_profile_key = si_profile[len(SI_PROFILE_HEADER):] if si_profile.startswith(SI_PROFILE_HEADER) else si_profile |
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87 if si_profile_key in self.si_profiles: |
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88 #We know this SI profile, we call the callback |
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89 self.si_profiles[si_profile_key](iq_elt, si_id, si_mime_type, si_elt, profile) |
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90 else: |
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91 #We don't know this profile, we send an error |
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92 self.sendError(iq_elt, 'bad-profile', profile) |
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93 |
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94 def sendError(self, request, condition, profile): |
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95 """Send IQ error as a result |
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96 |
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97 @param request(domish.Element): original IQ request |
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98 @param condition(str): error condition |
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99 @param profile: %(doc_profile)s |
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100 """ |
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101 client = self.host.getClient(profile) |
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102 if condition in SI_ERROR_CONDITIONS: |
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103 si_condition = condition |
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104 condition = 'bad-request' |
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105 else: |
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106 si_condition = None |
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107 |
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108 iq_error_elt = error.StanzaError(condition).toResponse(request) |
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109 if si_condition is not None: |
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110 iq_error_elt.error.addElement((NS_SI, si_condition)) |
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111 |
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112 client.xmlstream.send(iq_error_elt) |
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113 |
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114 def acceptStream(self, iq_elt, feature_elt, misc_elts=None, profile=C.PROF_KEY_NONE): |
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115 """Send the accept stream initiation answer |
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116 |
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117 @param iq_elt(domish.Element): initial SI request |
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118 @param feature_elt(domish.Element): 'feature' element containing stream method to use |
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119 @param misc_elts(list[domish.Element]): list of elements to add |
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120 @param profile: %(doc_profile)s |
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121 """ |
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122 log.info(_("sending stream initiation accept answer")) |
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123 if misc_elts is None: |
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124 misc_elts = [] |
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125 client = self.host.getClient(profile) |
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126 result_elt = xmlstream.toResponse(iq_elt, 'result') |
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127 si_elt = result_elt.addElement((NS_SI, 'si')) |
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128 si_elt.addChild(feature_elt) |
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129 for elt in misc_elts: |
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130 si_elt.addChild(elt) |
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131 client.xmlstream.send(result_elt) |
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132 |
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133 def _parseOfferResult(self, iq_elt): |
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134 try: |
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135 si_elt = iq_elt.elements(NS_SI, "si").next() |
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136 except StopIteration: |
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137 log.warning(u"No <si/> element found in result while expected") |
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138 raise exceptions.DataError |
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139 return (iq_elt, si_elt) |
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140 |
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141 |
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142 def proposeStream(self, to_jid, si_profile, feature_elt, misc_elts, mime_type='application/octet-stream', profile=C.PROF_KEY_NONE): |
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143 """Propose a stream initiation |
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144 |
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145 @param to_jid(jid.JID): recipient |
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146 @param si_profile(unicode): Stream initiation profile (XEP-0095) |
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147 @param feature_elt(domish.Element): feature element, according to XEP-0020 |
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148 @param misc_elts(list[domish.Element]): list of elements to add |
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149 @param mime_type(unicode): stream mime type |
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150 @param profile: %(doc_profile)s |
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151 @return (tuple): tuple with: |
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152 - session id (unicode) |
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153 - (D(domish_elt, domish_elt): offer deferred which returl a tuple |
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154 with iq_elt and si_elt |
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155 """ |
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156 client = self.host.getClient(profile) |
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157 offer = client.IQ() |
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158 sid = str(uuid.uuid4()) |
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159 log.debug(_(u"Stream Session ID: %s") % offer["id"]) |
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160 |
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161 offer["from"] = client.jid.full() |
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162 offer["to"] = to_jid.full() |
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163 si = offer.addElement('si', NS_SI) |
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164 si['id'] = sid |
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165 si["mime-type"] = mime_type |
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166 si["profile"] = si_profile |
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167 for elt in misc_elts: |
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168 si.addChild(elt) |
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169 si.addChild(feature_elt) |
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170 |
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171 offer_d = offer.send() |
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172 offer_d.addCallback(self._parseOfferResult) |
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173 return sid, offer_d |
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174 |
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175 |
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176 class XEP_0095_handler(xmlstream.XMPPHandler): |
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177 implements(iwokkel.IDisco) |
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178 |
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179 def __init__(self, plugin_parent): |
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180 self.plugin_parent = plugin_parent |
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181 self.host = plugin_parent.host |
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182 |
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183 def connectionInitialized(self): |
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184 self.xmlstream.addObserver(SI_REQUEST, self.plugin_parent.streamInit, profile=self.parent.profile) |
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185 |
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186 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
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187 return [disco.DiscoFeature(NS_SI)] + [disco.DiscoFeature(u"http://jabber.org/protocol/si/profile/{}".format(profile_name)) for profile_name in self.plugin_parent.si_profiles] |
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188 |
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189 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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190 return [] |