prosody
8416d4619d80
plugins/mod_pubsub/mod_pubsub.lua

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plugins/mod_pubsub/mod_pubsub.lua @ 5626:8416d4619d80

mod_pubsub: Split out handlers into a module library
author Florian Zeitz <florob@babelmonkeys.de>
date Fri, 17 May 2013 18:33:32 +0200
child 5690:630e7224a65f
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rev   line source
5626
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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 function handle_pubsub_iq(event)
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22 local origin, stanza = event.origin, event.stanza;
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23 local pubsub = stanza.tags[1];
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24 local action = pubsub.tags[1];
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25 if not action then
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26 return origin.send(st.error_reply(stanza, "cancel", "bad-request"));
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27 end
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28 local handler = handlers[stanza.attr.type.."_"..action.name];
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29 if handler then
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30 handler(origin, stanza, action, service);
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31 return true;
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32 end
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33 end
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34
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35 function simple_broadcast(kind, node, jids, item)
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36 if item then
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37 item = st.clone(item);
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38 item.attr.xmlns = nil; -- Clear the pubsub namespace
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39 end
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40 local message = st.message({ from = module.host, type = "headline" })
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41 :tag("event", { xmlns = xmlns_pubsub_event })
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42 :tag(kind, { node = node })
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43 :add_child(item);
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44 for jid in pairs(jids) do
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45 module:log("debug", "Sending notification to %s", jid);
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46 message.attr.to = jid;
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47 module:send(message);
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48 end
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49 end
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50
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51 module:hook("iq/host/"..xmlns_pubsub..":pubsub", handle_pubsub_iq);
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52 module:hook("iq/host/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq);
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53
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54 local disco_info;
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55
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56 local feature_map = {
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57 create = { "create-nodes", "instant-nodes", "item-ids" };
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58 retract = { "delete-items", "retract-items" };
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59 purge = { "purge-nodes" };
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60 publish = { "publish", autocreate_on_publish and "auto-create" };
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61 delete = { "delete-nodes" };
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62 get_items = { "retrieve-items" };
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63 add_subscription = { "subscribe" };
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64 get_subscriptions = { "retrieve-subscriptions" };
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65 };
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66
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67 local function add_disco_features_from_service(disco, service)
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68 for method, features in pairs(feature_map) do
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69 if service[method] then
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70 for _, feature in ipairs(features) do
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71 if feature then
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72 disco:tag("feature", { var = xmlns_pubsub.."#"..feature }):up();
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73 end
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74 end
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75 end
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76 end
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77 for affiliation in pairs(service.config.capabilities) do
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78 if affiliation ~= "none" and affiliation ~= "owner" then
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79 disco:tag("feature", { var = xmlns_pubsub.."#"..affiliation.."-affiliation" }):up();
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80 end
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81 end
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82 end
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83
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84 local function build_disco_info(service)
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85 local disco_info = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" })
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86 :tag("identity", { category = "pubsub", type = "service", name = pubsub_disco_name }):up()
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87 :tag("feature", { var = "http://jabber.org/protocol/pubsub" }):up();
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88 add_disco_features_from_service(disco_info, service);
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89 return disco_info;
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90 end
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91
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92 module:hook("iq-get/host/http://jabber.org/protocol/disco#info:query", function (event)
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93 local origin, stanza = event.origin, event.stanza;
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94 local node = stanza.tags[1].attr.node;
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95 if not node then
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96 return origin.send(st.reply(stanza):add_child(disco_info));
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97 else
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98 local ok, ret = service:get_nodes(stanza.attr.from);
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99 if ok and not ret[node] then
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100 ok, ret = false, "item-not-found";
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101 end
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102 if not ok then
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103 return origin.send(pubsub_error_reply(stanza, ret));
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104 end
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105 local reply = st.reply(stanza)
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106 :tag("query", { xmlns = "http://jabber.org/protocol/disco#info", node = node })
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107 :tag("identity", { category = "pubsub", type = "leaf" });
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108 return origin.send(reply);
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109 end
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110 end);
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111
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112 local function handle_disco_items_on_node(event)
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113 local stanza, origin = event.stanza, event.origin;
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114 local query = stanza.tags[1];
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115 local node = query.attr.node;
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116 local ok, ret = service:get_items(node, stanza.attr.from);
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117 if not ok then
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118 return origin.send(pubsub_error_reply(stanza, ret));
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119 end
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120
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121 local reply = st.reply(stanza)
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122 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items", node = node });
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123
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124 for id, item in pairs(ret) do
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125 reply:tag("item", { jid = module.host, name = id }):up();
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126 end
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127
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128 return origin.send(reply);
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129 end
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130
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131
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132 module:hook("iq-get/host/http://jabber.org/protocol/disco#items:query", function (event)
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133 if event.stanza.tags[1].attr.node then
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134 return handle_disco_items_on_node(event);
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135 end
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136 local ok, ret = service:get_nodes(event.stanza.attr.from);
8416d4619d80 mod_pubsub: Split out handlers into a module library
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137 if not ok then
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138 event.origin.send(pubsub_error_reply(event.stanza, ret));
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139 else
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140 local reply = st.reply(event.stanza)
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141 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items" });
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142 for node, node_obj in pairs(ret) do
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143 reply:tag("item", { jid = module.host, node = node, name = node_obj.config.name }):up();
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144 end
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145 event.origin.send(reply);
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146 end
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147 return true;
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148 end);
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149
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150 local admin_aff = module:get_option_string("default_admin_affiliation", "owner");
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151 local function get_affiliation(jid)
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152 local bare_jid = jid_bare(jid);
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153 if bare_jid == module.host or usermanager.is_admin(bare_jid, module.host) then
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154 return admin_aff;
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155 end
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156 end
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157
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158 function set_service(new_service)
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159 service = new_service;
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diff changeset
160 module.environment.service = service;
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161 disco_info = build_disco_info(service);
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162 end
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163
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164 function module.save()
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165 return { service = service };
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166 end
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167
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168 function module.restore(data)
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169 set_service(data.service);
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170 end
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171
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172 set_service(pubsub.new({
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173 capabilities = {
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174 none = {
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175 create = false;
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176 publish = false;
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177 retract = false;
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178 get_nodes = true;
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179
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180 subscribe = true;
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181 unsubscribe = true;
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182 get_subscription = true;
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183 get_subscriptions = true;
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184 get_items = true;
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185
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186 subscribe_other = false;
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187 unsubscribe_other = false;
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188 get_subscription_other = false;
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189 get_subscriptions_other = false;
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190
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191 be_subscribed = true;
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192 be_unsubscribed = true;
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diff changeset
193
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194 set_affiliation = false;
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195 };
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196 publisher = {
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197 create = false;
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198 publish = true;
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199 retract = true;
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200 get_nodes = true;
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diff changeset
201
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diff changeset
202 subscribe = true;
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diff changeset
203 unsubscribe = true;
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diff changeset
204 get_subscription = true;
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diff changeset
205 get_subscriptions = true;
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parents:
diff changeset
206 get_items = true;
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parents:
diff changeset
207
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diff changeset
208 subscribe_other = false;
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diff changeset
209 unsubscribe_other = false;
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diff changeset
210 get_subscription_other = false;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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diff changeset
211 get_subscriptions_other = false;
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parents:
diff changeset
212
8416d4619d80 mod_pubsub: Split out handlers into a module library
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diff changeset
213 be_subscribed = true;
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diff changeset
214 be_unsubscribed = true;
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parents:
diff changeset
215
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diff changeset
216 set_affiliation = false;
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diff changeset
217 };
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
218 owner = {
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diff changeset
219 create = true;
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diff changeset
220 publish = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
221 retract = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
222 delete = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
223 get_nodes = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
224
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parents:
diff changeset
225 subscribe = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
226 unsubscribe = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
227 get_subscription = true;
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parents:
diff changeset
228 get_subscriptions = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
229 get_items = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
230
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
231
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
232 subscribe_other = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
233 unsubscribe_other = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
234 get_subscription_other = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
235 get_subscriptions_other = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
236
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
237 be_subscribed = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
238 be_unsubscribed = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
239
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
240 set_affiliation = true;
8416d4619d80 mod_pubsub: Split out handlers into a module library
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parents:
diff changeset
241 };
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
242 };
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
243
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
244 autocreate_on_publish = autocreate_on_publish;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
245 autocreate_on_subscribe = autocreate_on_subscribe;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
246
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
247 broadcaster = simple_broadcast;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
248 get_affiliation = get_affiliation;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
249
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
250 normalize_jid = jid_bare;
8416d4619d80 mod_pubsub: Split out handlers into a module library
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff changeset
251 }));