prosody
c33a1d6da016
plugins/mod_pubsub/mod_pubsub.lua

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plugins/mod_pubsub/mod_pubsub.lua @ 7416:c33a1d6da016

MUC: Restore last message from state, not room config (missing change from cbb05b454c13)
author Kim Alvefur <zash@zash.se>
date Sat, 30 Apr 2016 17:25:06 +0200
parent 6843:161cccfdf015
child 7717:9c8eb0239eef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 local pubsub = require "util.pubsub";
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2 local st = require "util.stanza";
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3 local jid_bare = require "util.jid".bare;
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4 local usermanager = require "core.usermanager";
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5
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6 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
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7 local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event";
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8 local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
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9
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10 local autocreate_on_publish = module:get_option_boolean("autocreate_on_publish", false);
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11 local autocreate_on_subscribe = module:get_option_boolean("autocreate_on_subscribe", false);
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12 local pubsub_disco_name = module:get_option("name");
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13 if type(pubsub_disco_name) ~= "string" then pubsub_disco_name = "Prosody PubSub Service"; end
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14 local expose_publisher = module:get_option_boolean("expose_publisher", false)
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15
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16 local service;
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17
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18 local lib_pubsub = module:require "pubsub";
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19 local handlers = lib_pubsub.handlers;
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20 local pubsub_error_reply = lib_pubsub.pubsub_error_reply;
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21
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22 module:depends("disco");
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23 module:add_identity("pubsub", "service", pubsub_disco_name);
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24 module:add_feature("http://jabber.org/protocol/pubsub");
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25
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26 function handle_pubsub_iq(event)
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27 local origin, stanza = event.origin, event.stanza;
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28 local pubsub = stanza.tags[1];
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29 local action = pubsub.tags[1];
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30 if not action then
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31 origin.send(st.error_reply(stanza, "cancel", "bad-request"));
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32 return true;
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33 end
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34 local handler = handlers[stanza.attr.type.."_"..action.name];
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35 if handler then
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36 handler(origin, stanza, action, service);
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37 return true;
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38 end
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39 end
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40
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41 function simple_broadcast(kind, node, jids, item, actor)
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42 if item then
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43 item = st.clone(item);
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44 item.attr.xmlns = nil; -- Clear the pubsub namespace
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45 if expose_publisher and actor then
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46 item.attr.publisher = actor
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47 end
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48 end
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49 local message = st.message({ from = module.host, type = "headline" })
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50 :tag("event", { xmlns = xmlns_pubsub_event })
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51 :tag(kind, { node = node })
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52 :add_child(item);
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53 for jid in pairs(jids) do
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54 module:log("debug", "Sending notification to %s", jid);
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55 message.attr.to = jid;
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56 module:send(message);
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57 end
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58 end
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59
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60 module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
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61 module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
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62
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63 local feature_map = {
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64 create = { "create-nodes", "instant-nodes", "item-ids" };
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65 retract = { "delete-items", "retract-items" };
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66 purge = { "purge-nodes" };
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67 publish = { "publish", autocreate_on_publish and "auto-create" };
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68 delete = { "delete-nodes" };
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69 get_items = { "retrieve-items" };
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70 add_subscription = { "subscribe" };
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71 get_subscriptions = { "retrieve-subscriptions" };
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72 set_configure = { "config-node" };
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73 get_default = { "retrieve-default" };
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74 };
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75
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76 local function add_disco_features_from_service(service)
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77 for method, features in pairs(feature_map) do
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78 if service[method] then
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79 for _, feature in ipairs(features) do
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80 if feature then
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81 module:add_feature(xmlns_pubsub.."#"..feature);
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82 end
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83 end
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84 end
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85 end
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86 for affiliation in pairs(service.config.capabilities) do
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87 if affiliation ~= "none" and affiliation ~= "owner" then
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88 module:add_feature(xmlns_pubsub.."#"..affiliation.."-affiliation");
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89 end
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90 end
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91 end
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92
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93 module:hook("host-disco-info-node", function (event)
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94 local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
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95 local ok, ret = service:get_nodes(stanza.attr.from);
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96 if not ok or not ret[node] then
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97 return;
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98 end
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99 event.exists = true;
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100 reply:tag("identity", { category = "pubsub", type = "leaf" });
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101 end);
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102
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103 module:hook("host-disco-items-node", function (event)
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104 local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
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105 local ok, ret = service:get_items(node, stanza.attr.from);
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106 if not ok then
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107 return;
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108 end
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109
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110 for _, id in ipairs(ret) do
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111 reply:tag("item", { jid = module.host, name = id }):up();
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112 end
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113 event.exists = true;
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114 end);
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115
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116
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117 module:hook("host-disco-items", function (event)
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118 local stanza, origin, reply = event.stanza, event.origin, event.reply;
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119 local ok, ret = service:get_nodes(event.stanza.attr.from);
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120 if not ok then
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121 return;
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122 end
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123 for node, node_obj in pairs(ret) do
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124 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
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125 end
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126 end);
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127
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128 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
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129 local unowned_aff = module:get_option_string("default_unowned_affiliation");
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130 local function get_affiliation(jid, node)
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131 local bare_jid = jid_bare(jid);
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132 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
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133 return admin_aff;
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134 end
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135 if not node then
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136 return unowned_aff;
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137 end
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138 end
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139
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140 function set_service(new_service)
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141 service = new_service;
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142 module.environment.service = service;
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143 add_disco_features_from_service(service);
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144 end
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145
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146 function module.save()
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147 return { service = service };
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148 end
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149
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150 function module.restore(data)
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151 set_service(data.service);
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152 end
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153
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154 function module.load()
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155 if module.reloading then return; end
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156
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157 set_service(pubsub.new({
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158 capabilities = {
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159 none = {
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160 create = false;
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161 publish = false;
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162 retract = false;
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163 get_nodes = true;
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164
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165 subscribe = true;
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166 unsubscribe = true;
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167 get_subscription = true;
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168 get_subscriptions = true;
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169 get_items = true;
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170
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171 subscribe_other = false;
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172 unsubscribe_other = false;
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173 get_subscription_other = false;
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174 get_subscriptions_other = false;
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175
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176 be_subscribed = true;
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177 be_unsubscribed = true;
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178
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179 set_affiliation = false;
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180 };
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181 publisher = {
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182 create = false;
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183 publish = true;
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184 retract = true;
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185 get_nodes = true;
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186
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187 subscribe = true;
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188 unsubscribe = true;
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189 get_subscription = true;
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190 get_subscriptions = true;
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191 get_items = true;
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192
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193 subscribe_other = false;
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194 unsubscribe_other = false;
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195 get_subscription_other = false;
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196 get_subscriptions_other = false;
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197
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198 be_subscribed = true;
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199 be_unsubscribed = true;
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200
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201 set_affiliation = false;
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202 };
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203 owner = {
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204 create = true;
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205 publish = true;
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206 retract = true;
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207 delete = true;
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208 get_nodes = true;
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209 configure = true;
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210
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211 subscribe = true;
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212 unsubscribe = true;
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213 get_subscription = true;
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214 get_subscriptions = true;
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215 get_items = true;
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216
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217
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218 subscribe_other = true;
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219 unsubscribe_other = true;
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220 get_subscription_other = true;
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221 get_subscriptions_other = true;
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222
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223 be_subscribed = true;
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224 be_unsubscribed = true;
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225
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226 set_affiliation = true;
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227 };
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228 };
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229
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230 autocreate_on_publish = autocreate_on_publish;
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231 autocreate_on_subscribe = autocreate_on_subscribe;
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232
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233 broadcaster = simple_broadcast;
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234 get_affiliation = get_affiliation;
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235
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236 normalize_jid = jid_bare;
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237 }));
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238 end