prosody
40a7135eb6ac
plugins/mod_pubsub/mod_pubsub.lua

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plugins/mod_pubsub/mod_pubsub.lua @ 8808:40a7135eb6ac

mod_pubsub: Use moduleapi broadcast method
author Kim Alvefur <zash@zash.se>
date Mon, 21 May 2018 01:25:10 +0200
parent 8695:09e7fd8b16cd
child 8811:f2d35eee69c9
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rev   line source
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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_string("name", "Prosody PubSub Service");
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13 local expose_publisher = module:get_option_boolean("expose_publisher", false)
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14
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15 local enable_persistence = module:get_option_boolean("experimental_pubsub_item_persistence", false);
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16
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17 local service;
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18
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19 local lib_pubsub = module:require "pubsub";
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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 return lib_pubsub.handle_pubsub_iq(event, service);
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27 end
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28
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29 local node_store = module:open_store(module.name.."_nodes");
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30
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31 local function create_simple_itemstore(node_config, node_name)
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32 local archive = module:open_store("pubsub_"..node_name, "archive");
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33 return lib_pubsub.archive_itemstore(archive, node_config, nil, node_name);
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34 end
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35
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36 if enable_persistence then
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37 module:log("warn", "Item persistence is an experimental feature. Note that ownership information is lost on restart.")
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38 else
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39 create_simple_itemstore = nil;
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40 end
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41
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42
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43 function simple_broadcast(kind, node, jids, item, actor)
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44 if item then
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45 item = st.clone(item);
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46 item.attr.xmlns = nil; -- Clear the pubsub namespace
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47 if expose_publisher and actor then
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48 item.attr.publisher = actor
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49 end
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50 end
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51 local message = st.message({ from = module.host, type = "headline" })
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52 :tag("event", { xmlns = xmlns_pubsub_event })
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53 :tag(kind, { node = node })
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54 :add_child(item);
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55 module:broadcast(jids, message, pairs);
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56 end
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57
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58 function is_item_stanza(item)
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59 return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item";
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60 end
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61
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62 module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
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63 module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
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64
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65 local function add_disco_features_from_service(service) --luacheck: ignore 431/service
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66 for feature in lib_pubsub.get_feature_set(service) do
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67 module:add_feature(xmlns_pubsub.."#"..feature);
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68 end
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69 end
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70
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71 module:hook("host-disco-info-node", function (event)
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72 local stanza, reply, node = event.stanza, event.reply, event.node;
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73 local ok, ret = service:get_nodes(stanza.attr.from);
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74 if not ok or not ret[node] then
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75 return;
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76 end
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77 event.exists = true;
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78 reply:tag("identity", { category = "pubsub", type = "leaf" });
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79 end);
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80
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81 module:hook("host-disco-items-node", function (event)
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82 local stanza, reply, node = event.stanza, event.reply, event.node;
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83 local ok, ret = service:get_items(node, stanza.attr.from);
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84 if not ok then
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85 return;
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86 end
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87
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88 for _, id in ipairs(ret) do
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89 reply:tag("item", { jid = module.host, name = id }):up();
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90 end
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91 event.exists = true;
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92 end);
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93
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94
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95 module:hook("host-disco-items", function (event)
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96 local stanza, reply = event.stanza, event.reply;
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97 local ok, ret = service:get_nodes(stanza.attr.from);
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98 if not ok then
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99 return;
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100 end
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101 for node, node_obj in pairs(ret) do
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102 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
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103 end
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104 end);
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105
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106 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
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107 local function get_affiliation(jid)
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108 local bare_jid = jid_bare(jid);
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109 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
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110 return admin_aff;
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111 end
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112 end
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113
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114 function set_service(new_service)
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115 service = new_service;
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116 module.environment.service = service;
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117 add_disco_features_from_service(service);
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118 end
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119
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120 function module.save()
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121 return { service = service };
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122 end
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123
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124 function module.restore(data)
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125 set_service(data.service);
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126 end
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127
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128 function module.load()
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129 if module.reloading then return; end
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130
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131 set_service(pubsub.new({
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132 capabilities = {
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133 none = {
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134 create = false;
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135 publish = false;
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136 retract = false;
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137 get_nodes = true;
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138
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139 subscribe = true;
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140 unsubscribe = true;
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141 get_subscription = true;
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142 get_subscriptions = true;
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143 get_items = true;
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144
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145 subscribe_other = false;
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146 unsubscribe_other = false;
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147 get_subscription_other = false;
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148 get_subscriptions_other = false;
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149
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150 be_subscribed = true;
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151 be_unsubscribed = true;
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152
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153 set_affiliation = false;
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154 };
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155 publisher = {
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156 create = false;
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157 publish = true;
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158 retract = true;
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159 get_nodes = true;
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160
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161 subscribe = true;
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162 unsubscribe = true;
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163 get_subscription = true;
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164 get_subscriptions = true;
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165 get_items = true;
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166
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167 subscribe_other = false;
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168 unsubscribe_other = false;
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169 get_subscription_other = false;
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170 get_subscriptions_other = false;
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171
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172 be_subscribed = true;
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173 be_unsubscribed = true;
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174
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175 set_affiliation = false;
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176 };
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177 owner = {
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178 create = true;
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179 publish = true;
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180 retract = true;
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181 delete = true;
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182 get_nodes = true;
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183 configure = true;
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184
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185 subscribe = true;
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186 unsubscribe = true;
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187 get_subscription = true;
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188 get_subscriptions = true;
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189 get_items = true;
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190
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191
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192 subscribe_other = true;
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193 unsubscribe_other = true;
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194 get_subscription_other = true;
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195 get_subscriptions_other = true;
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196
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197 be_subscribed = true;
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198 be_unsubscribed = true;
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199
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200 set_affiliation = true;
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201 };
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202 };
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203
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204 autocreate_on_publish = autocreate_on_publish;
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205 autocreate_on_subscribe = autocreate_on_subscribe;
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206
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207 nodestore = node_store;
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208 itemstore = create_simple_itemstore;
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209 broadcaster = simple_broadcast;
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210 itemcheck = is_item_stanza;
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211 get_affiliation = get_affiliation;
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212
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213 normalize_jid = jid_bare;
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214 }));
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215 end