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annotate src/plugins/plugin_xep_0277.py @ 303:2b52a5da0978

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plugin XEP_0277: microblog access model can now be changed plugin XEP_0060: added some method to manage pubsub nodes
author Goffi <goffi@goffi.org>
date Thu, 24 Mar 2011 21:15:26 +0100
parents 9f3a6cf91668
children e04ccf122bb6
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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 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 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 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 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 NS_ACCESS_MODEL = 'pubsub#access_model'
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37 NS_PERSIST_ITEMS = 'pubsub#persist_items'
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38 NS_MAX_ITEMS = 'pubsub#max_items'
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39
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40 PLUGIN_INFO = {
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41 "name": "Microblogging over XMPP Plugin",
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42 "import_name": "XEP-0277",
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43 "type": "XEP",
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44 "protocols": [],
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45 "dependencies": ["XEP-0163","XEP-0060"],
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46 "main": "XEP_0277",
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47 "handler": "no",
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48 "description": _("""Implementation of microblogging Protocol""")
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49 }
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50
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51 class XEP_0277():
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52
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53 def __init__(self, host):
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54 info(_("Microblogging plugin initialization"))
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55 self.host = host
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56 self.host.plugins["XEP-0163"].addPEPEvent("MICROBLOG", NS_MICROBLOG, self.microblogCB, self.sendMicroblog)
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57 host.bridge.addMethod("getLastMicroblogs", ".communication",
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58 in_sign='sis', out_sign='aa{ss}',
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59 method=self.getLastMicroblogs,
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60 async = True,
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61 doc = { 'summary':'retrieve items',
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62 'param_0':'jid: publisher of wanted microblog',
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63 'param_1':'max_items: see XEP-0060 #6.5.7',
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64 'param_2':'%(doc_profile)s',
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65 'return':'list of microblog data (dict)'
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66 })
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67 host.bridge.addMethod("setMicroblogAccess", ".communication", in_sign='ss', out_sign='',
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68 method=self.setMicroblogAccess,
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69 doc = {
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70 })
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71
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72 def _item2mbdata(self, item):
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73 """Convert an XML Item to microblog data used in bridge API
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74 @param item: domish.Element of microblog item
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75 @return: microblog data (dictionary)"""
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76 try:
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77 entry_elt = filter (lambda x:x.name == "entry", item.children)[0]
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78 except KeyError:
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79 warning(_('No entry element in microblog item'))
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80 return
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81 _entry = Entry().import_xml(entry_elt.toXml().encode('utf-8'))
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82 microblog_data={}
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83 try:
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84 microblog_data['content'] = _entry.title.text
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85 if len(_entry.authors):
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86 microblog_data['author'] = _entry.authors[0].name.text
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87 microblog_data['timestamp'] = str(int(_entry.updated.tf))
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88 microblog_data['id'] = item['id']
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89 except AttributeError, KeyError:
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90 error(_('Error while parsing atom entry for microblogging event'))
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91 return {}
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92
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93 ##XXX: workaround for Jappix behaviour
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94 if not 'author' in microblog_data:
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95 from xe import NestElement
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96 try:
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97 author=NestElement('author')
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98 author.import_xml(str(_entry))
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99 microblog_data['author'] = author.nick.text
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100 except:
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101 error(_('Cannot find author'))
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102 ##end workaround Jappix
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103 return microblog_data
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104
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105 def microblogCB(self, itemsEvent, profile):
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106 for item in itemsEvent.items:
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107 microblog_data = self._item2mbdata(item)
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108 self.host.bridge.personalEvent(itemsEvent.sender.full(), "MICROBLOG", microblog_data, profile)
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109
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110 def sendMicroblog(self, data, profile):
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111 """Send XEP-0277's microblog data
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112 @param data: must include content
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113 @param profile: profile which send the mood"""
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114 if not data.has_key('content'):
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115 error(_("Microblog data must contain at least 'content' key"))
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116 return 3
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117 content = data['content']
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118 if not content:
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119 error(_("Microblog data's content value must not be empty"))
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120 _uuid = unicode(uuid.uuid1())
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121 _entry = Entry()
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122 #FIXME: need to escape html
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123 _entry.title = content.encode('utf-8')
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124 _entry.author = Author()
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125 _entry.author.name = data.get('author',self.host.getJidNStream(profile)[0].userhost()).encode('utf-8')
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126 _entry.updated = float(data.get('timestamp',time()))
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127 _entry.id = _uuid
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128 _entry_elt = ElementParser()(str(_entry))
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129 item = pubsub.Item(payload=_entry_elt)
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130 item['id'] = _uuid
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131 self.host.plugins["XEP-0060"].publish(None, NS_MICROBLOG, [item], profile_key = profile)
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132 return 0
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133
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134 def getLastMicroblogs(self, pub_jid, max_items=10, profile_key='@DEFAULT@', callback=None, errback=None):
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135 """Get the last published microblogs
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136 @param pub_jid: jid of the publisher
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137 @param max_items: how many microblogs we wants to get
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138 @param profile_key: profile key
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139 @param callback: used for the async answer
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140 @param errback: used for the async answer
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141 """
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142 assert(callback)
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143 d = self.host.plugins["XEP-0060"].getItems(jid.JID(pub_jid), NS_MICROBLOG, max_items=max_items, profile_key=profile_key)
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144 d.addCallbacks(lambda items: callback(map(self._item2mbdata, items)), errback)
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145
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146 def setMicroblogAccess(self, access="presence", profile_key='@DEFAULT@'):
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147 """Create a microblog node on PEP with given access
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148 If the node already exists, it is deleted and recreated
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149 @param access: Node access model, according to xep-0060 #4.5
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150 @param profile_key: profile key"""
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151
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152 jid, xmlstream = self.host.getJidNStream(profile_key)
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153 def cb(result):
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154 #Node is created with right permission
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155 debug(_("Microblog node created"))
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156
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157 def fatal_err(s_error):
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158 #Something went wrong
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159 error(_("Can't set microblog access"))
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160
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161 def err_cb(s_error):
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162 #If the node already exists, the condition is "conflict",
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163 #else we have an unmanaged error
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164 if s_error.value.condition=='conflict':
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165 d = self.host.plugins["XEP-0060"].deleteNode(jid.userhostJID(), NS_MICROBLOG, profile_key=profile_key)
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166 d.addCallback(lambda x: create_node().addCallback(cb).addErrback(fatal_err))
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167 d.addErrback(fatal_err)
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168 else:
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169 fatal_err(s_error)
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170
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171 def create_node():
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172 return self.host.plugins["XEP-0060"].createNode(jid.userhostJID(), NS_MICROBLOG, {NS_ACCESS_MODEL:access, NS_PERSIST_ITEMS:1, NS_MAX_ITEMS:-1}, profile_key=profile_key)
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173
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174 create_node().addCallback(cb).addErrback(err_cb)
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175
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176
303
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177