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plugins/mod_pep.lua @ 9142:85bc624b8685
mod_pep: Correct comment about 'recipients' table
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 06 Aug 2018 23:20:36 +0200 |
parent | 9141:c1368fb756bf |
child | 9143:817f666d9037 |
rev | line source |
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mod_pep_plus: An util.pubsub based PEP module
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1 local pubsub = require "util.pubsub"; |
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2 local jid_bare = require "util.jid".bare; |
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3 local jid_split = require "util.jid".split; |
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4 local jid_join = require "util.jid".join; |
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5 local set_new = require "util.set".new; |
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6 local st = require "util.stanza"; |
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7 local calculate_hash = require "util.caps".calculate_hash; |
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8 local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed; |
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9 local cache = require "util.cache"; |
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10 local set = require "util.set"; |
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11 |
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12 local xmlns_pubsub = "http://jabber.org/protocol/pubsub"; |
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13 local xmlns_pubsub_event = "http://jabber.org/protocol/pubsub#event"; |
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14 local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner"; |
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15 |
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16 local lib_pubsub = module:require "pubsub"; |
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17 |
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18 local empty_set = set_new(); |
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19 |
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20 -- username -> util.pubsub service object |
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21 local services = {}; |
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22 |
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23 -- username -> recipient -> set of nodes |
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24 local recipients = {}; |
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25 local hash_map = {}; |
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26 |
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27 local host = module.host; |
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28 |
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29 local node_config = module:open_store("pep", "map"); |
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30 local known_nodes = module:open_store("pep"); |
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31 |
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32 local max_max_items = module:get_option_number("pep_max_items", 256); |
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33 |
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34 function module.save() |
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35 return { |
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36 services = services; |
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37 recipients = recipients; |
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38 }; |
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39 end |
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40 |
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41 function module.restore(data) |
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42 services = data.services; |
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43 recipients = data.recipients; |
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44 end |
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45 |
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46 function is_item_stanza(item) |
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47 return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item"; |
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48 end |
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49 |
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50 function check_node_config(node, actor, new_config) -- luacheck: ignore 212/node 212/actor |
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51 if (new_config["max_items"] or 1) > max_max_items then |
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52 return false; |
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53 end |
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54 if new_config["access_model"] ~= "presence" |
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55 and new_config["access_model"] ~= "whitelist" |
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56 and new_config["access_model"] ~= "open" then |
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57 return false; |
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58 end |
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59 return true; |
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60 end |
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61 |
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62 local function subscription_presence(username, recipient) |
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63 local user_bare = jid_join(username, host); |
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64 local recipient_bare = jid_bare(recipient); |
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65 if (recipient_bare == user_bare) then return true; end |
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66 return is_contact_subscribed(username, host, recipient_bare); |
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67 end |
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68 |
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69 local function nodestore(username) |
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70 -- luacheck: ignore 212/self |
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71 local store = {}; |
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72 function store:get(node) |
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73 local data, err = node_config:get(username, node) |
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74 if data == true then |
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75 -- COMPAT Previously stored only a boolean representing 'persist_items' |
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76 data = { |
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77 name = node; |
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78 config = {}; |
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79 subscribers = {}; |
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80 affiliations = {}; |
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81 }; |
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82 end |
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83 return data, err; |
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84 end |
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85 function store:set(node, data) |
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86 if data then |
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87 -- Save the data without subscriptions |
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88 local subscribers = {}; |
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89 for jid, sub in pairs(data.subscribers) do |
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90 if type(sub) ~= "table" or not sub.presence then |
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91 subscribers[jid] = sub; |
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92 end |
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93 end |
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94 data = { |
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95 name = data.name; |
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96 config = data.config; |
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97 affiliations = data.affiliations; |
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98 subscribers = subscribers; |
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99 }; |
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100 end |
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101 return node_config:set(username, node, data); |
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102 end |
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103 function store:users() |
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104 return pairs(known_nodes:get(username) or {}); |
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105 end |
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106 return store; |
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107 end |
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108 |
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109 local function simple_itemstore(username) |
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110 return function (config, node) |
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111 if config["persist_items"] then |
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112 module:log("debug", "Creating new persistent item store for user %s, node %q", username, node); |
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113 local archive = module:open_store("pep_"..node, "archive"); |
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114 return lib_pubsub.archive_itemstore(archive, config, username, node, false); |
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115 else |
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116 module:log("debug", "Creating new ephemeral item store for user %s, node %q", username, node); |
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117 return cache.new(tonumber(config["max_items"])); |
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118 end |
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119 end |
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120 end |
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121 |
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122 local function get_broadcaster(username) |
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123 local user_bare = jid_join(username, host); |
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124 local function simple_broadcast(kind, node, jids, item) |
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125 local message = st.message({ from = user_bare, type = "headline" }) |
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126 :tag("event", { xmlns = xmlns_pubsub_event }) |
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127 :tag(kind, { node = node }); |
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128 if item then |
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129 item = st.clone(item); |
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130 item.attr.xmlns = nil; -- Clear the pubsub namespace |
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131 message:add_child(item); |
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132 end |
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133 for jid in pairs(jids) do |
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134 module:log("debug", "Sending notification to %s from %s: %s", jid, user_bare, tostring(item)); |
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135 message.attr.to = jid; |
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136 module:send(message); |
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137 end |
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138 end |
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139 return simple_broadcast; |
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140 end |
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141 |
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142 function get_pep_service(username) |
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143 module:log("debug", "get_pep_service(%q)", username); |
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144 local user_bare = jid_join(username, host); |
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145 local service = services[username]; |
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146 if service then |
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147 return service; |
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148 end |
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149 service = pubsub.new({ |
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150 capabilities = { |
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151 restricted = { |
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152 be_subscribed = false; |
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153 be_unsubscribed = true; |
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154 }; |
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155 none = { |
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156 create = false; |
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157 publish = false; |
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158 retract = false; |
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159 get_nodes = false; |
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160 |
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161 subscribe = false; |
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162 unsubscribe = false; |
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163 get_subscription = false; |
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164 get_subscriptions = false; |
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165 get_items = false; |
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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 subscriber = { |
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178 create = false; |
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179 publish = false; |
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180 retract = false; |
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181 get_nodes = true; |
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182 |
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183 subscribe = true; |
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184 unsubscribe = true; |
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185 get_subscription = true; |
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186 get_subscriptions = true; |
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187 get_items = true; |
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188 |
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189 subscribe_other = false; |
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190 unsubscribe_other = false; |
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191 get_subscription_other = false; |
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192 get_subscriptions_other = false; |
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193 |
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194 be_subscribed = true; |
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195 be_unsubscribed = true; |
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196 |
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197 set_affiliation = false; |
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198 }; |
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199 publisher = { |
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200 create = false; |
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201 publish = true; |
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202 retract = true; |
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203 get_nodes = true; |
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204 get_configuration = true; |
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205 |
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206 subscribe = true; |
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207 unsubscribe = true; |
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208 get_subscription = true; |
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209 get_subscriptions = true; |
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210 get_items = true; |
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211 |
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212 subscribe_other = false; |
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213 unsubscribe_other = false; |
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214 get_subscription_other = false; |
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215 get_subscriptions_other = false; |
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216 |
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217 be_subscribed = true; |
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218 be_unsubscribed = true; |
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219 |
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220 set_affiliation = false; |
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221 }; |
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222 owner = { |
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223 create = true; |
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224 publish = true; |
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225 retract = true; |
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226 delete = true; |
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227 get_nodes = true; |
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228 configure = true; |
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229 get_configuration = true; |
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230 |
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231 subscribe = true; |
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232 unsubscribe = true; |
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233 get_subscription = true; |
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234 get_subscriptions = true; |
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235 get_items = true; |
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236 |
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237 |
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238 subscribe_other = true; |
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239 unsubscribe_other = true; |
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240 get_subscription_other = true; |
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241 get_subscriptions_other = true; |
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242 |
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243 be_subscribed = true; |
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244 be_unsubscribed = true; |
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245 |
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246 set_affiliation = true; |
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247 }; |
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248 }; |
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249 |
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250 node_defaults = { |
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251 ["max_items"] = 1; |
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252 ["persist_items"] = true; |
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253 ["access_model"] = "presence"; |
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254 }; |
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255 |
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256 autocreate_on_publish = true; |
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257 autocreate_on_subscribe = true; |
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258 |
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259 nodestore = nodestore(username); |
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260 itemstore = simple_itemstore(username); |
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261 broadcaster = get_broadcaster(username); |
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262 itemcheck = is_item_stanza; |
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263 get_affiliation = function (jid) |
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264 if jid_bare(jid) == user_bare then |
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265 return "owner"; |
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266 end |
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267 end; |
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268 |
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269 access_models = { |
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270 presence = function (jid) |
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271 if subscription_presence(username, jid) then |
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272 return "subscriber"; |
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273 end |
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274 end; |
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275 }; |
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276 |
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277 normalize_jid = jid_bare; |
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278 |
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279 check_node_config = check_node_config; |
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280 }); |
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281 local nodes, err = known_nodes:get(username); |
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282 if nodes then |
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283 module:log("debug", "Restoring nodes for user %s", username); |
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284 for node in pairs(nodes) do |
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285 module:log("debug", "Restoring node %q", node); |
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286 service:create(node, true); |
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287 end |
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288 elseif err then |
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289 module:log("error", "Could not restore nodes for %s: %s", username, err); |
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290 else |
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291 module:log("debug", "No known nodes"); |
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292 end |
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293 services[username] = service; |
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294 module:add_item("pep-service", { service = service, jid = user_bare }); |
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295 return service; |
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296 end |
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297 |
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298 function handle_pubsub_iq(event) |
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299 local origin, stanza = event.origin, event.stanza; |
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300 local service_name = origin.username; |
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301 if stanza.attr.to ~= nil then |
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302 service_name = jid_split(stanza.attr.to); |
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303 end |
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304 local service = get_pep_service(service_name); |
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305 |
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306 return lib_pubsub.handle_pubsub_iq(event, service) |
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307 end |
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308 |
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309 module:hook("iq/bare/"..xmlns_pubsub..":pubsub", handle_pubsub_iq); |
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310 module:hook("iq/bare/"..xmlns_pubsub_owner..":pubsub", handle_pubsub_iq); |
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311 |
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312 module:add_identity("pubsub", "pep", module:get_option_string("name", "Prosody")); |
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313 module:add_feature("http://jabber.org/protocol/pubsub#publish"); |
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314 |
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315 local function get_caps_hash_from_presence(stanza, current) |
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316 local t = stanza.attr.type; |
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317 if not t then |
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318 local child = stanza:get_child("c", "http://jabber.org/protocol/caps"); |
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319 if child then |
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320 local attr = child.attr; |
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321 if attr.hash then -- new caps |
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322 if attr.hash == 'sha-1' and attr.node and attr.ver then |
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323 return attr.ver, attr.node.."#"..attr.ver; |
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324 end |
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325 else -- legacy caps |
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326 if attr.node and attr.ver then |
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327 return attr.node.."#"..attr.ver.."#"..(attr.ext or ""), attr.node.."#"..attr.ver; |
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328 end |
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329 end |
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330 end |
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331 return; -- no or bad caps |
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332 elseif t == "unavailable" or t == "error" then |
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333 return; |
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334 end |
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335 return current; -- no caps, could mean caps optimization, so return current |
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336 end |
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337 |
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338 local function resend_last_item(jid, node, service) |
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339 local ok, id, item = service:get_last_item(node, jid); |
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340 if not ok then return; end |
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341 if not id then return; end |
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342 service.config.broadcaster("items", node, { [jid] = true }, item); |
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343 end |
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344 |
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345 local function update_subscriptions(recipient, service_name, nodes) |
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346 nodes = nodes or empty_set; |
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347 |
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348 local service_recipients = recipients[service_name]; |
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349 if not service_recipients then |
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350 service_recipients = {}; |
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351 recipients[service_name] = service_recipients; |
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352 end |
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353 |
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354 local current = service_recipients[recipient]; |
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355 if not current or type(current) ~= "table" then |
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356 current = empty_set; |
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357 end |
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358 |
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359 if (current == empty_set or current:empty()) and (nodes == empty_set or nodes:empty()) then |
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360 return; |
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361 end |
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362 |
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363 local service = get_pep_service(service_name); |
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364 for node in current - nodes do |
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365 service:remove_subscription(node, recipient, recipient); |
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366 end |
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367 |
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368 for node in nodes - current do |
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369 if service:add_subscription(node, recipient, recipient, { presence = true }) then |
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370 resend_last_item(recipient, node, service); |
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371 end |
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372 end |
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373 |
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374 if nodes == empty_set or nodes:empty() then |
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375 nodes = nil; |
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376 end |
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377 |
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378 service_recipients[recipient] = nodes; |
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379 end |
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380 |
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381 module:hook("presence/bare", function(event) |
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382 -- inbound presence to bare JID received |
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383 local origin, stanza = event.origin, event.stanza; |
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384 local t = stanza.attr.type; |
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385 local is_self = not stanza.attr.to; |
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386 local username = jid_split(stanza.attr.to); |
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387 local user_bare = jid_bare(stanza.attr.to); |
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388 if is_self then |
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389 username = origin.username; |
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390 user_bare = jid_join(username, host); |
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391 end |
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392 |
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393 if not t then -- available presence |
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394 if is_self or subscription_presence(username, stanza.attr.from) then |
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395 local recipient = stanza.attr.from; |
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396 local current = recipients[username] and recipients[username][recipient]; |
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397 local hash, query_node = get_caps_hash_from_presence(stanza, current); |
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398 if current == hash or (current and current == hash_map[hash]) then return; end |
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399 if not hash then |
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400 update_subscriptions(recipient, username); |
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401 else |
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402 recipients[username] = recipients[username] or {}; |
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403 if hash_map[hash] then |
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404 update_subscriptions(recipient, username, hash_map[hash]); |
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405 else |
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406 recipients[username][recipient] = hash; |
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407 local from_bare = origin.type == "c2s" and origin.username.."@"..origin.host; |
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408 if is_self or origin.type ~= "c2s" or (recipients[from_bare] and recipients[from_bare][origin.full_jid]) ~= hash then |
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409 -- COMPAT from ~= stanza.attr.to because OneTeam can't deal with missing from attribute |
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410 origin.send( |
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411 st.stanza("iq", {from=user_bare, to=stanza.attr.from, id="disco", type="get"}) |
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412 :tag("query", {xmlns = "http://jabber.org/protocol/disco#info", node = query_node}) |
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413 ); |
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414 end |
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415 end |
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416 end |
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417 end |
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418 elseif t == "unavailable" then |
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419 update_subscriptions(stanza.attr.from, username); |
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420 elseif not is_self and t == "unsubscribe" then |
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421 local from = jid_bare(stanza.attr.from); |
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422 local subscriptions = recipients[username]; |
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423 if subscriptions then |
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424 for subscriber in pairs(subscriptions) do |
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425 if jid_bare(subscriber) == from then |
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426 update_subscriptions(subscriber, username); |
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427 end |
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428 end |
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429 end |
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430 end |
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431 end, 10); |
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432 |
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433 module:hook("iq-result/bare/disco", function(event) |
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434 local origin, stanza = event.origin, event.stanza; |
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435 local disco = stanza:get_child("query", "http://jabber.org/protocol/disco#info"); |
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436 if not disco then |
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437 return; |
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438 end |
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439 |
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440 -- Process disco response |
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441 local is_self = stanza.attr.to == nil; |
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442 local user_bare = jid_bare(stanza.attr.to); |
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443 local username = jid_split(stanza.attr.to); |
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444 if is_self then |
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445 username = origin.username; |
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446 user_bare = jid_join(username, host); |
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447 end |
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448 local contact = stanza.attr.from; |
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449 local current = recipients[username] and recipients[username][contact]; |
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450 if type(current) ~= "string" then return; end -- check if waiting for recipient's response |
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451 local ver = current; |
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452 if not string.find(current, "#") then |
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453 ver = calculate_hash(disco.tags); -- calculate hash |
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454 end |
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|
455 local notify = set_new(); |
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456 for _, feature in pairs(disco.tags) do |
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457 if feature.name == "feature" and feature.attr.var then |
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458 local nfeature = feature.attr.var:match("^(.*)%+notify$"); |
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459 if nfeature then notify:add(nfeature); end |
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460 end |
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|
461 end |
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462 hash_map[ver] = notify; -- update hash map |
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463 if is_self then |
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464 -- Optimization: Fiddle with other local users |
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465 for jid, item in pairs(origin.roster) do -- for all interested contacts |
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466 if jid then |
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467 local contact_node, contact_host = jid_split(jid); |
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468 if contact_host == host and (item.subscription == "both" or item.subscription == "from") then |
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469 update_subscriptions(user_bare, contact_node, notify); |
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470 end |
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471 end |
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472 end |
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473 end |
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474 update_subscriptions(contact, username, notify); |
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475 end); |
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476 |
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477 module:hook("account-disco-info-node", function(event) |
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478 local stanza, origin = event.stanza, event.origin; |
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479 local service_name = origin.username; |
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480 if stanza.attr.to ~= nil then |
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481 service_name = jid_split(stanza.attr.to); |
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482 end |
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483 local service = get_pep_service(service_name); |
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484 return lib_pubsub.handle_disco_info_node(event, service); |
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485 end); |
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486 |
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487 module:hook("account-disco-info", function(event) |
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488 local origin, reply = event.origin, event.reply; |
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489 |
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490 reply:tag('identity', {category='pubsub', type='pep'}):up(); |
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491 |
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492 local username = jid_split(reply.attr.from) or origin.username; |
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493 local service = get_pep_service(username); |
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494 |
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495 local supported_features = lib_pubsub.get_feature_set(service) + set.new{ |
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496 -- Features not covered by the above |
8332
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497 "access-presence", |
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498 "auto-subscribe", |
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499 "filtered-notifications", |
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500 "last-published", |
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501 "persistent-items", |
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502 "presence-notifications", |
e89b57d0d80a
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diff
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|
503 "presence-subscribe", |
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504 }; |
8341
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|
505 |
8342
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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diff
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|
506 for feature in supported_features do |
8332
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diff
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507 reply:tag('feature', {var=xmlns_pubsub.."#"..feature}):up(); |
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diff
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|
508 end |
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|
509 end); |
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
changeset
|
510 |
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
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|
511 module:hook("account-disco-items-node", function(event) |
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diff
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512 local stanza, origin = event.stanza, event.origin; |
8321
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diff
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|
513 local is_self = stanza.attr.to == nil; |
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parents:
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diff
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514 local username = jid_split(stanza.attr.to); |
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diff
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|
515 if is_self then |
73ff49a42ea8
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diff
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|
516 username = origin.username; |
8305
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diff
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|
517 end |
8321
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diff
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|
518 local service = get_pep_service(username); |
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diff
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|
519 return lib_pubsub.handle_disco_items_node(event, service); |
5852
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parents:
diff
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|
520 end); |
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mod_pep_plus: An util.pubsub based PEP module
Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
changeset
|
521 |
84bdac93910f
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
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|
522 module:hook("account-disco-items", function(event) |
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
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|
523 local reply, stanza, origin = event.reply, event.stanza, event.origin; |
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parents:
diff
changeset
|
524 |
8321
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diff
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525 local is_self = stanza.attr.to == nil; |
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526 local user_bare = jid_bare(stanza.attr.to); |
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Kim Alvefur <zash@zash.se>
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8320
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|
527 local username = jid_split(stanza.attr.to); |
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|
528 if is_self then |
73ff49a42ea8
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8320
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|
529 username = origin.username; |
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diff
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|
530 user_bare = jid_join(username, host); |
8305
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diff
changeset
|
531 end |
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diff
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|
532 local service = get_pep_service(username); |
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Kim Alvefur <zash@zash.se>
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8320
diff
changeset
|
533 |
5852
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parents:
diff
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|
534 local ok, ret = service:get_nodes(jid_bare(stanza.attr.from)); |
84bdac93910f
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diff
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|
535 if not ok then return; end |
84bdac93910f
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parents:
diff
changeset
|
536 |
84bdac93910f
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parents:
diff
changeset
|
537 for node, node_obj in pairs(ret) do |
8321
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Kim Alvefur <zash@zash.se>
parents:
8320
diff
changeset
|
538 reply:tag("item", { jid = user_bare, node = node, name = node_obj.config.name }):up(); |
5852
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
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|
539 end |
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Florian Zeitz <florob@babelmonkeys.de>
parents:
diff
changeset
|
540 end); |