prosody
bcb1ea9047d3
plugins/mod_pubsub/mod_pubsub.lua

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plugins/mod_pubsub/mod_pubsub.lua @ 6441:bcb1ea9047d3

mod_pubsub: Add support for requesting default node configuration
author Kim Alvefur <zash@zash.se>
date Sun, 28 Sep 2014 01:55:32 +0200
parent 6440:9619809bf50b
child 6442:0f4025abbe8f
child 6446:011ca9b88179
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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
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15 local service;
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16
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17 local lib_pubsub = module:require "pubsub";
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18 local handlers = lib_pubsub.handlers;
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19 local pubsub_error_reply = lib_pubsub.pubsub_error_reply;
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20
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21 module:depends("disco");
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22 module:add_identity("pubsub", "service", pubsub_disco_name);
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23 module:add_feature("http://jabber.org/protocol/pubsub");
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24
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25 function handle_pubsub_iq(event)
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26 local origin, stanza = event.origin, event.stanza;
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27 local pubsub = stanza.tags[1];
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28 local action = pubsub.tags[1];
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29 if not action then
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30 return origin.send(st.error_reply(stanza, "cancel", "bad-request"));
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31 end
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32 local handler = handlers[stanza.attr.type.."_"..action.name];
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33 if handler then
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34 handler(origin, stanza, action, service);
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35 return true;
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36 end
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37 end
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38
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39 function simple_broadcast(kind, node, jids, item)
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40 if item then
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41 item = st.clone(item);
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42 item.attr.xmlns = nil; -- Clear the pubsub namespace
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43 end
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44 local message = st.message({ from = module.host, type = "headline" })
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45 :tag("event", { xmlns = xmlns_pubsub_event })
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46 :tag(kind, { node = node })
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47 :add_child(item);
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48 for jid in pairs(jids) do
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49 module:log("debug", "Sending notification to %s", jid);
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50 message.attr.to = jid;
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51 module:send(message);
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52 end
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53 end
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54
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55 module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
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56 module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
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57
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58 local feature_map = {
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59 create = { "create-nodes", "instant-nodes", "item-ids" };
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60 retract = { "delete-items", "retract-items" };
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61 purge = { "purge-nodes" };
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62 publish = { "publish", autocreate_on_publish and "auto-create" };
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63 delete = { "delete-nodes" };
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64 get_items = { "retrieve-items" };
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65 add_subscription = { "subscribe" };
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66 get_subscriptions = { "retrieve-subscriptions" };
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67 set_configure = { "config-node" };
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68 get_default = { "retrieve-default" };
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69 };
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70
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71 local function add_disco_features_from_service(service)
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72 for method, features in pairs(feature_map) do
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73 if service[method] then
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74 for _, feature in ipairs(features) do
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75 if feature then
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76 module:add_feature(xmlns_pubsub.."#"..feature);
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77 end
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78 end
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79 end
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80 end
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81 for affiliation in pairs(service.config.capabilities) do
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82 if affiliation ~= "none" and affiliation ~= "owner" then
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83 module:add_feature(xmlns_pubsub.."#"..affiliation.."-affiliation");
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84 end
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85 end
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86 end
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87
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88 module:hook("host-disco-info-node", function (event)
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89 local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
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90 local ok, ret = service:get_nodes(stanza.attr.from);
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91 if not ok or not ret[node] then
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92 return;
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93 end
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94 event.exists = true;
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95 reply:tag("identity", { category = "pubsub", type = "leaf" });
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96 end);
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97
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98 module:hook("host-disco-items-node", function (event)
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99 local stanza, origin, reply, node = event.stanza, event.origin, event.reply, event.node;
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100 local ok, ret = service:get_items(node, stanza.attr.from);
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101 if not ok then
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102 return;
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103 end
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104
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105 for _, id in ipairs(ret) do
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106 reply:tag("item", { jid = module.host, name = id }):up();
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107 end
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108 event.exists = true;
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109 end);
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110
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111
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112 module:hook("host-disco-items", function (event)
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113 local stanza, origin, reply = event.stanza, event.origin, event.reply;
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114 local ok, ret = service:get_nodes(event.stanza.attr.from);
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115 if not ok then
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116 return;
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117 end
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118 for node, node_obj in pairs(ret) do
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119 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
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120 end
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121 end);
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122
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123 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
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124 local function get_affiliation(jid)
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125 local bare_jid = jid_bare(jid);
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126 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
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127 return admin_aff;
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128 end
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129 end
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130
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131 function set_service(new_service)
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132 service = new_service;
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133 module.environment.service = service;
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134 add_disco_features_from_service(service);
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135 end
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136
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137 function module.save()
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138 return { service = service };
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139 end
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140
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141 function module.restore(data)
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142 set_service(data.service);
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143 end
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144
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145 function module.load()
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146 if module.reloading then return; end
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147
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148 set_service(pubsub.new({
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149 capabilities = {
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150 none = {
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151 create = false;
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152 publish = false;
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153 retract = false;
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154 get_nodes = true;
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155
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156 subscribe = true;
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157 unsubscribe = true;
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158 get_subscription = true;
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159 get_subscriptions = true;
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160 get_items = true;
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161
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162 subscribe_other = false;
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163 unsubscribe_other = false;
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164 get_subscription_other = false;
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165 get_subscriptions_other = false;
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166
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167 be_subscribed = true;
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168 be_unsubscribed = true;
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169
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170 set_affiliation = false;
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171 };
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172 publisher = {
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173 create = false;
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174 publish = true;
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175 retract = true;
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176 get_nodes = true;
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177
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178 subscribe = true;
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179 unsubscribe = true;
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180 get_subscription = true;
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181 get_subscriptions = true;
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182 get_items = true;
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183
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184 subscribe_other = false;
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185 unsubscribe_other = false;
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186 get_subscription_other = false;
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187 get_subscriptions_other = false;
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188
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189 be_subscribed = true;
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190 be_unsubscribed = true;
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191
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192 set_affiliation = false;
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193 };
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194 owner = {
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195 create = true;
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196 publish = true;
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197 retract = true;
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198 delete = true;
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199 get_nodes = true;
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200 configure = true;
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201
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202 subscribe = true;
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203 unsubscribe = true;
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204 get_subscription = true;
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205 get_subscriptions = true;
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206 get_items = true;
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207
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208
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209 subscribe_other = true;
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210 unsubscribe_other = true;
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211 get_subscription_other = true;
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212 get_subscriptions_other = true;
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213
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214 be_subscribed = true;
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215 be_unsubscribed = true;
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216
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217 set_affiliation = true;
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218 };
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219 };
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220
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221 node_config_form = require"util.dataforms".new {
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222 {
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223 type = "hidden";
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224 name = "FORM_TYPE";
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225 value = "http://jabber.org/protocol/pubsub#node_config";
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226 };
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227 {
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228 type = "text-single";
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229 name = "pubsub#max_items";
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230 label = "Max # of items to persist";
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231 };
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232 };
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233
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234 autocreate_on_publish = autocreate_on_publish;
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235 autocreate_on_subscribe = autocreate_on_subscribe;
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236
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237 broadcaster = simple_broadcast;
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238 get_affiliation = get_affiliation;
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239
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240 normalize_jid = jid_bare;
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241 }));
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242 end