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annotate src/plugins/plugin_xep_0277.py @ 573:db7a03a33612

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installation: added mutagen to setup.py's dependencies
author Goffi <goffi@goffi.org>
date Mon, 07 Jan 2013 23:54:17 +0100
parents ca13633d3b6b
children 952322b1d490
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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 """
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5 SAT plugin for microblogging over XMPP (xep-0277)
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6 Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org)
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7
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8 This program is free software: you can redistribute it and/or modify
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9 it under the terms of the GNU Affero General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU Affero General Public License for more details.
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17
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18 You should have received a copy of the GNU Affero General Public License
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19 along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """
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21
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22 from logging import debug, info, error
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23 from twisted.internet import protocol
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24 from twisted.words.protocols.jabber import client, jid
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25 from twisted.words.protocols.jabber import error as jab_error
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26 import twisted.internet.error
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27 from twisted.words.xish import domish
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28 from sat.tools.xml_tools import ElementParser
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29
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30 from wokkel import disco,pubsub
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31 from feed.atom import Entry, Author
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32 import uuid
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33 from time import time
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34
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35 NS_MICROBLOG = 'urn:xmpp:microblog:0'
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36 OPT_ACCESS_MODEL = 'pubsub#access_model'
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37 OPT_PERSIST_ITEMS = 'pubsub#persist_items'
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38 OPT_MAX_ITEMS = 'pubsub#max_items'
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39 OPT_DELIVER_PAYLOADS = 'pubsub#deliver_payloads'
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40 OPT_SEND_ITEM_SUBSCRIBE = 'pubsub#send_item_subscribe'
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41
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42 PLUGIN_INFO = {
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43 "name": "Microblogging over XMPP Plugin",
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44 "import_name": "XEP-0277",
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45 "type": "XEP",
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46 "protocols": [],
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47 "dependencies": ["XEP-0163","XEP-0060"],
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48 "main": "XEP_0277",
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49 "handler": "no",
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50 "description": _("""Implementation of microblogging Protocol""")
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51 }
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52
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53 class NodeAccessChangeException(Exception):
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54 pass
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55
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56 class XEP_0277():
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57
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58 def __init__(self, host):
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59 info(_("Microblogging plugin initialization"))
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60 self.host = host
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61 self.host.plugins["XEP-0163"].addPEPEvent("MICROBLOG", NS_MICROBLOG, self.microblogCB, self.sendMicroblog)
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62 host.bridge.addMethod("getLastMicroblogs", ".plugin",
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63 in_sign='sis', out_sign='aa{ss}',
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64 method=self.getLastMicroblogs,
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65 async = True,
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66 doc = { 'summary':'retrieve items',
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67 'param_0':'jid: publisher of wanted microblog',
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68 'param_1':'max_items: see XEP-0060 #6.5.7',
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69 'param_2':'%(doc_profile)s',
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70 'return':'list of microblog data (dict)'
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71 })
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72 host.bridge.addMethod("setMicroblogAccess", ".plugin", in_sign='ss', out_sign='',
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73 method=self.setMicroblogAccess,
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74 async = True,
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75 doc = {
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76 })
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77
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78 def item2mbdata(self, item):
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79 """Convert an XML Item to microblog data used in bridge API
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80 @param item: domish.Element of microblog item
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81 @return: microblog data (dictionary)"""
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82 try:
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83 entry_elt = filter (lambda x:x.name == "entry", item.children)[0]
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84 except KeyError:
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85 warning(_('No entry element in microblog item'))
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86 return
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87 _entry = Entry().import_xml(entry_elt.toXml().encode('utf-8'))
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88 microblog_data={}
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89 try:
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90 microblog_data['content'] = _entry.title.text
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91 if len(_entry.authors):
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92 microblog_data['author'] = _entry.authors[0].name.text
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93 microblog_data['timestamp'] = str(int(_entry.updated.tf))
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94 microblog_data['id'] = item['id']
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95 except (AttributeError, KeyError):
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96 error(_('Error while parsing atom entry for microblogging event'))
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97 return {}
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98
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99 ##XXX: workaround for Jappix behaviour
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100 if not 'author' in microblog_data:
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101 from xe import NestElement
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102 try:
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103 author=NestElement('author')
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104 author.import_xml(str(_entry))
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105 microblog_data['author'] = author.nick.text
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106 except:
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107 error(_('Cannot find author'))
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108 ##end workaround Jappix
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109 return microblog_data
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110
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111 def microblogCB(self, itemsEvent, profile):
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112 for item in itemsEvent.items:
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113 microblog_data = self.item2mbdata(item)
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114 self.host.bridge.personalEvent(itemsEvent.sender.full(), "MICROBLOG", microblog_data, profile)
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115
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116 def data2entry(self, data, profile):
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117 """Convert a data dict to en entry usable to create an item
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118 @param data: data dict as given by bridge method
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119 @return: domish.Element"""
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120 _uuid = unicode(uuid.uuid1())
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121 content = data['content']
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122 _entry = Entry()
297
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123 #FIXME: need to escape html
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124 _entry.title = unicode(content).encode('utf-8')
297
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125 _entry.author = Author()
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126 _entry.author.name = data.get('author',self.host.getJidNStream(profile)[0].userhost()).encode('utf-8')
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127 _entry.updated = float(data.get('timestamp',time()))
304
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128 _entry.id = str(_uuid)
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129 _entry_elt = ElementParser()(str(_entry).decode('utf-8'))
293
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130 item = pubsub.Item(payload=_entry_elt)
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131 item['id'] = _uuid
306
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132 return item
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133
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134 def sendMicroblog(self, data, profile):
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135 """Send XEP-0277's microblog data
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136 @param data: must include content
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137 @param profile: profile which send the mood"""
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138 if not data.has_key('content'):
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139 error(_("Microblog data must contain at least 'content' key"))
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140 return 3
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141 content = data['content']
309
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142 if not content:
306
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143 error(_("Microblog data's content value must not be empty"))
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144 return 3
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145 item = self.data2entry(data, profile)
293
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146 self.host.plugins["XEP-0060"].publish(None, NS_MICROBLOG, [item], profile_key = profile)
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147 return 0
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148
468
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149 def getLastMicroblogs(self, pub_jid, max_items=10, profile_key='@DEFAULT@'):
303
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150 """Get the last published microblogs
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151 @param pub_jid: jid of the publisher
465
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152 @param max_items: how many microblogs we want to get
303
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153 @param profile_key: profile key
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154 @param callback: used for the async answer
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155 @param errback: used for the async answer
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156 """
302
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157 assert(callback)
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158 d = self.host.plugins["XEP-0060"].getItems(jid.JID(pub_jid), NS_MICROBLOG, max_items=max_items, profile_key=profile_key)
468
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159 d.addCallback(lambda items: map(self.item2mbdata, items))
302
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160
468
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161 def setMicroblogAccess(self, access="presence", profile_key='@DEFAULT@'):
303
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162 """Create a microblog node on PEP with given access
304
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163 If the node already exists, it change options
303
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164 @param access: Node access model, according to xep-0060 #4.5
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165 @param profile_key: profile key"""
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166
306
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167 _jid, xmlstream = self.host.getJidNStream(profile_key)
311
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168 if not _jid:
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169 error(_("Can't find profile's jid"))
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170 return
343
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171 _options = {OPT_ACCESS_MODEL:access, OPT_PERSIST_ITEMS:1, OPT_MAX_ITEMS:-1, OPT_DELIVER_PAYLOADS:1, OPT_SEND_ITEM_SUBSCRIBE: 1}
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172
303
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173 def cb(result):
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174 #Node is created with right permission
304
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175 debug(_("Microblog node has now access %s") % access)
303
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176
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177 def fatal_err(s_error):
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178 #Something went wrong
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179 error(_("Can't set microblog access"))
468
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180 raise NodeAccessChangeException()
303
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181
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182 def err_cb(s_error):
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183 #If the node already exists, the condition is "conflict",
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184 #else we have an unmanaged error
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185 if s_error.value.condition=='conflict':
306
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186 #d = self.host.plugins["XEP-0060"].deleteNode(_jid.userhostJID(), NS_MICROBLOG, profile_key=profile_key)
304
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187 #d.addCallback(lambda x: create_node().addCallback(cb).addErrback(fatal_err))
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188 change_node_options().addCallback(cb).addErrback(fatal_err)
303
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189 else:
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190 fatal_err(s_error)
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191
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192 def create_node():
306
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193 return self.host.plugins["XEP-0060"].createNode(_jid.userhostJID(), NS_MICROBLOG, _options, profile_key=profile_key)
304
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194
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195 def change_node_options():
306
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196 return self.host.plugins["XEP-0060"].setOptions(_jid.userhostJID(), NS_MICROBLOG, _jid.userhostJID(), _options, profile_key=profile_key)
303
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197
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198 create_node().addCallback(cb).addErrback(err_cb)
302
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199
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200
303
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201