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annotate mod_pep_plus/pubsub.lib.lua @ 2801:cb2342cf3f3c

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mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
author Kim Alvefur <zash@zash.se>
date Wed, 18 Oct 2017 09:56:29 +0200
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2801
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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1 local t_unpack = table.unpack or unpack; -- luacheck: ignore 113
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2 local time_now = os.time;
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3
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4 local set = require "util.set";
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5 local st = require "util.stanza";
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6 local it = require "util.iterators";
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7 local uuid_generate = require "util.uuid".generate;
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8 local dataform = require"util.dataforms".new;
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9
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10 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
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11 local xmlns_pubsub_errors = "http://jabber.org/protocol/pubsub#errors";
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12 local xmlns_pubsub_owner = "http://jabber.org/protocol/pubsub#owner";
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13
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14 local _M = {};
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15
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16 local handlers = {};
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17 _M.handlers = handlers;
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18
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19 local pubsub_errors = {
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20 ["conflict"] = { "cancel", "conflict" };
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21 ["invalid-jid"] = { "modify", "bad-request", nil, "invalid-jid" };
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22 ["jid-required"] = { "modify", "bad-request", nil, "jid-required" };
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23 ["nodeid-required"] = { "modify", "bad-request", nil, "nodeid-required" };
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24 ["item-not-found"] = { "cancel", "item-not-found" };
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25 ["not-subscribed"] = { "modify", "unexpected-request", nil, "not-subscribed" };
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26 ["forbidden"] = { "auth", "forbidden" };
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27 ["not-allowed"] = { "cancel", "not-allowed" };
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28 };
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29 local function pubsub_error_reply(stanza, error)
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30 local e = pubsub_errors[error];
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31 local reply = st.error_reply(stanza, t_unpack(e, 1, 3));
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32 if e[4] then
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33 reply:tag(e[4], { xmlns = xmlns_pubsub_errors }):up();
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34 end
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35 return reply;
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36 end
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37 _M.pubsub_error_reply = pubsub_error_reply;
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38
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39 local node_config_form = dataform {
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40 {
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41 type = "hidden";
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42 name = "FORM_TYPE";
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43 value = "http://jabber.org/protocol/pubsub#node_config";
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44 };
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45 {
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46 type = "text-single";
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47 name = "pubsub#max_items";
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48 label = "Max # of items to persist";
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49 };
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50 {
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51 type = "boolean";
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52 name = "pubsub#persist_items";
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53 label = "Persist items to storage";
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54 };
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55 };
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56
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57 local service_method_feature_map = {
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58 add_subscription = { "subscribe" };
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59 create = { "create-nodes", "instant-nodes", "item-ids", "create-and-configure" };
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60 delete = { "delete-nodes" };
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61 get_items = { "retrieve-items" };
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62 get_subscriptions = { "retrieve-subscriptions" };
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63 node_defaults = { "retrieve-default" };
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64 publish = { "publish" };
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65 purge = { "purge-nodes" };
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66 retract = { "delete-items", "retract-items" };
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67 set_node_config = { "config-node" };
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68 };
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69 local service_config_feature_map = {
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70 autocreate_on_publish = { "auto-create" };
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71 };
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72
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73 function _M.get_feature_set(service)
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74 local supported_features = set.new();
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75
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76 for method, features in pairs(service_method_feature_map) do
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77 if service[method] then
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78 for _, feature in ipairs(features) do
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79 if feature then
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80 supported_features:add(feature);
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81 end
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82 end
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83 end
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84 end
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85
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86 for option, features in pairs(service_config_feature_map) do
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87 if service.config[option] then
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88 for _, feature in ipairs(features) do
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89 if feature then
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90 supported_features:add(feature);
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91 end
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92 end
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93 end
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94 end
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95
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96 for affiliation in pairs(service.config.capabilities) do
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97 if affiliation ~= "none" and affiliation ~= "owner" then
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98 supported_features:add(affiliation.."-affiliation");
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99 end
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100 end
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101
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102 return supported_features;
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103 end
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104
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105 function _M.handle_pubsub_iq(event, service)
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106 local origin, stanza = event.origin, event.stanza;
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107 local pubsub_tag = stanza.tags[1];
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108 local action = pubsub_tag.tags[1];
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109 if not action then
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110 return origin.send(st.error_reply(stanza, "cancel", "bad-request"));
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111 end
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112 local prefix = "";
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113 if pubsub_tag.attr.xmlns == xmlns_pubsub_owner then
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114 prefix = "owner_";
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115 end
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116 local handler = handlers[prefix..stanza.attr.type.."_"..action.name];
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117 if handler then
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118 handler(origin, stanza, action, service);
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119 return true;
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120 end
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121 end
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122
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123 function handlers.get_items(origin, stanza, items, service)
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124 local node = items.attr.node;
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125 local item = items:get_child("item");
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126 local item_id = item and item.attr.id;
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127
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128 if not node then
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129 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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130 return true;
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131 end
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132 local ok, results = service:get_items(node, stanza.attr.from, item_id);
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133 if not ok then
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134 origin.send(pubsub_error_reply(stanza, results));
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135 return true;
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136 end
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137
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138 local data = st.stanza("items", { node = node });
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139 for _, id in ipairs(results) do
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140 data:add_child(results[id]);
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141 end
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142 local reply;
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143 if data then
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144 reply = st.reply(stanza)
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145 :tag("pubsub", { xmlns = xmlns_pubsub })
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146 :add_child(data);
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147 else
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148 reply = pubsub_error_reply(stanza, "item-not-found");
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149 end
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150 origin.send(reply);
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151 return true;
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152 end
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153
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154 function handlers.get_subscriptions(origin, stanza, subscriptions, service)
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155 local node = subscriptions.attr.node;
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156 local ok, ret = service:get_subscriptions(node, stanza.attr.from, stanza.attr.from);
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157 if not ok then
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158 origin.send(pubsub_error_reply(stanza, ret));
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159 return true;
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160 end
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161 local reply = st.reply(stanza)
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162 :tag("pubsub", { xmlns = xmlns_pubsub })
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163 :tag("subscriptions");
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164 for _, sub in ipairs(ret) do
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165 reply:tag("subscription", { node = sub.node, jid = sub.jid, subscription = 'subscribed' }):up();
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166 end
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167 origin.send(reply);
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168 return true;
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169 end
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170
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171 function handlers.set_create(origin, stanza, create, service)
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172 local node = create.attr.node;
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173 local ok, ret, reply;
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174 local config;
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175 local configure = stanza.tags[1]:get_child("configure");
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176 if configure then
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177 local config_form = configure:get_child("x", "jabber:x:data");
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178 if not config_form then
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179 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing dataform"));
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180 return true;
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181 end
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182 local form_data, err = node_config_form:data(config_form);
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183 if not form_data then
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184 origin.send(st.error_reply(stanza, "modify", "bad-request", err));
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185 return true;
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186 end
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187 config = {
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188 ["max_items"] = tonumber(form_data["pubsub#max_items"]);
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189 ["persist_items"] = form_data["pubsub#persist_items"];
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190 };
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191 end
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192 if node then
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193 ok, ret = service:create(node, stanza.attr.from, config);
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194 if ok then
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195 reply = st.reply(stanza);
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196 else
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197 reply = pubsub_error_reply(stanza, ret);
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198 end
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199 else
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diff changeset
200 repeat
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201 node = uuid_generate();
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202 ok, ret = service:create(node, stanza.attr.from, config);
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203 until ok or ret ~= "conflict";
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204 if ok then
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205 reply = st.reply(stanza)
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206 :tag("pubsub", { xmlns = xmlns_pubsub })
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207 :tag("create", { node = node });
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208 else
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209 reply = pubsub_error_reply(stanza, ret);
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210 end
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211 end
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212 origin.send(reply);
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213 return true;
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214 end
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215
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216 function handlers.owner_set_delete(origin, stanza, delete, service)
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217 local node = delete.attr.node;
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218
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219 local reply;
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220 if not node then
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221 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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222 return true;
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223 end
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224 local ok, ret = service:delete(node, stanza.attr.from);
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225 if ok then
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226 reply = st.reply(stanza);
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227 else
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228 reply = pubsub_error_reply(stanza, ret);
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229 end
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230 origin.send(reply);
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231 return true;
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232 end
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233
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234 function handlers.set_subscribe(origin, stanza, subscribe, service)
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235 local node, jid = subscribe.attr.node, subscribe.attr.jid;
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236 if not (node and jid) then
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237 origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
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238 return true;
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239 end
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240 --[[
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241 local options_tag, options = stanza.tags[1]:get_child("options"), nil;
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242 if options_tag then
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243 options = options_form:data(options_tag.tags[1]);
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244 end
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245 --]]
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246 local options_tag, options; -- FIXME
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247 local ok, ret = service:add_subscription(node, stanza.attr.from, jid, options);
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248 local reply;
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249 if ok then
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250 reply = st.reply(stanza)
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251 :tag("pubsub", { xmlns = xmlns_pubsub })
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252 :tag("subscription", {
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253 node = node,
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254 jid = jid,
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255 subscription = "subscribed"
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256 }):up();
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257 if options_tag then
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258 reply:add_child(options_tag);
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259 end
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260 else
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261 reply = pubsub_error_reply(stanza, ret);
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262 end
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263 origin.send(reply);
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264 end
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265
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266 function handlers.set_unsubscribe(origin, stanza, unsubscribe, service)
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267 local node, jid = unsubscribe.attr.node, unsubscribe.attr.jid;
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268 if not (node and jid) then
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269 origin.send(pubsub_error_reply(stanza, jid and "nodeid-required" or "invalid-jid"));
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270 return true;
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271 end
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272 local ok, ret = service:remove_subscription(node, stanza.attr.from, jid);
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273 local reply;
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274 if ok then
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275 reply = st.reply(stanza);
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276 else
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277 reply = pubsub_error_reply(stanza, ret);
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278 end
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279 origin.send(reply);
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280 return true;
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281 end
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282
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283 function handlers.set_publish(origin, stanza, publish, service)
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284 local node = publish.attr.node;
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285 if not node then
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286 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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287 return true;
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288 end
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289 local item = publish:get_child("item");
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290 local id = (item and item.attr.id);
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291 if not id then
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292 id = uuid_generate();
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293 if item then
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294 item.attr.id = id;
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295 end
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296 end
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297 local ok, ret = service:publish(node, stanza.attr.from, id, item);
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298 local reply;
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299 if ok then
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300 reply = st.reply(stanza)
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301 :tag("pubsub", { xmlns = xmlns_pubsub })
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302 :tag("publish", { node = node })
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303 :tag("item", { id = id });
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304 else
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305 reply = pubsub_error_reply(stanza, ret);
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306 end
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307 origin.send(reply);
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308 return true;
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309 end
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diff changeset
310
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311 function handlers.set_retract(origin, stanza, retract, service)
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312 local node, notify = retract.attr.node, retract.attr.notify;
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313 notify = (notify == "1") or (notify == "true");
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314 local item = retract:get_child("item");
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315 local id = item and item.attr.id
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316 if not (node and id) then
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317 origin.send(pubsub_error_reply(stanza, node and "item-not-found" or "nodeid-required"));
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318 return true;
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319 end
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320 local reply, notifier;
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321 if notify then
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322 notifier = st.stanza("retract", { id = id });
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323 end
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324 local ok, ret = service:retract(node, stanza.attr.from, id, notifier);
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325 if ok then
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326 reply = st.reply(stanza);
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327 else
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328 reply = pubsub_error_reply(stanza, ret);
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329 end
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330 origin.send(reply);
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331 return true;
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332 end
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333
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334 function handlers.owner_set_purge(origin, stanza, purge, service)
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335 local node, notify = purge.attr.node, purge.attr.notify;
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336 notify = (notify == "1") or (notify == "true");
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337 local reply;
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338 if not node then
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339 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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340 return true;
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341 end
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342 local ok, ret = service:purge(node, stanza.attr.from, notify);
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343 if ok then
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344 reply = st.reply(stanza);
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345 else
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346 reply = pubsub_error_reply(stanza, ret);
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parents:
diff changeset
347 end
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diff changeset
348 origin.send(reply);
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parents:
diff changeset
349 return true;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
350 end
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parents:
diff changeset
351
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parents:
diff changeset
352 function handlers.owner_get_configure(origin, stanza, config, service)
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parents:
diff changeset
353 local node = config.attr.node;
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parents:
diff changeset
354 if not node then
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parents:
diff changeset
355 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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parents:
diff changeset
356 return true;
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parents:
diff changeset
357 end
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parents:
diff changeset
358
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diff changeset
359 if not service:may(node, stanza.attr.from, "configure") then
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parents:
diff changeset
360 origin.send(pubsub_error_reply(stanza, "forbidden"));
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parents:
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361 return true;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
362 end
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parents:
diff changeset
363
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parents:
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364 local node_obj = service.nodes[node];
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parents:
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365 if not node_obj then
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parents:
diff changeset
366 origin.send(pubsub_error_reply(stanza, "item-not-found"));
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367 return true;
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parents:
diff changeset
368 end
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369
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370 local node_config = node_obj.config;
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371 local pubsub_form_data = {
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372 ["pubsub#max_items"] = tostring(node_config["max_items"]);
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373 ["pubsub#persist_items"] = node_config["persist_items"]
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374 }
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375 local reply = st.reply(stanza)
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376 :tag("pubsub", { xmlns = xmlns_pubsub_owner })
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377 :tag("configure", { node = node })
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378 :add_child(node_config_form:form(pubsub_form_data));
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379 origin.send(reply);
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diff changeset
380 return true;
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parents:
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381 end
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382
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383 function handlers.owner_set_configure(origin, stanza, config, service)
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384 local node = config.attr.node;
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parents:
diff changeset
385 if not node then
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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parents:
diff changeset
386 origin.send(pubsub_error_reply(stanza, "nodeid-required"));
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387 return true;
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parents:
diff changeset
388 end
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diff changeset
389 if not service:may(node, stanza.attr.from, "configure") then
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diff changeset
390 origin.send(pubsub_error_reply(stanza, "forbidden"));
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diff changeset
391 return true;
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diff changeset
392 end
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393 local config_form = config:get_child("x", "jabber:x:data");
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
394 if not config_form then
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
395 origin.send(st.error_reply(stanza, "modify", "bad-request", "Missing dataform"));
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diff changeset
396 return true;
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parents:
diff changeset
397 end
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diff changeset
398 local form_data, err = node_config_form:data(config_form);
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
399 if not form_data then
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
400 origin.send(st.error_reply(stanza, "modify", "bad-request", err));
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diff changeset
401 return true;
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parents:
diff changeset
402 end
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403 local new_config = {
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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404 ["max_items"] = tonumber(form_data["pubsub#max_items"]);
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405 ["persist_items"] = form_data["pubsub#persist_items"];
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406 };
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407 local ok, err = service:set_node_config(node, stanza.attr.from, new_config);
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
408 if not ok then
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diff changeset
409 origin.send(pubsub_error_reply(stanza, err));
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diff changeset
410 return true;
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diff changeset
411 end
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diff changeset
412 origin.send(st.reply(stanza));
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
413 return true;
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parents:
diff changeset
414 end
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diff changeset
415
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diff changeset
416 function handlers.owner_get_default(origin, stanza, default, service) -- luacheck: ignore 212/default
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
417 local pubsub_form_data = {
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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418 ["pubsub#max_items"] = tostring(service.node_defaults["max_items"]);
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419 ["pubsub#persist_items"] = service.node_defaults["persist_items"]
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
420 }
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diff changeset
421 local reply = st.reply(stanza)
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422 :tag("pubsub", { xmlns = xmlns_pubsub_owner })
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diff changeset
423 :tag("default")
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diff changeset
424 :add_child(node_config_form:form(pubsub_form_data));
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
425 origin.send(reply);
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diff changeset
426 return true;
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parents:
diff changeset
427 end
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Kim Alvefur <zash@zash.se>
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diff changeset
428
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
429 local function create_encapsulating_item(id, payload)
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
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diff changeset
430 local item = st.stanza("item", { id = id, xmlns = xmlns_pubsub });
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
431 item:add_child(payload);
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diff changeset
432 return item;
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parents:
diff changeset
433 end
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
434
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Kim Alvefur <zash@zash.se>
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diff changeset
435 local function archive_itemstore(archive, config, user, node)
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
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diff changeset
436 module:log("debug", "Creation of itemstore for node %s with config %s", node, config);
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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parents:
diff changeset
437 local get_set = {};
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
438 function get_set:items() -- luacheck: ignore 212/self
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
439 local data, err = archive:find(user, {
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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440 limit = tonumber(config["pubsub#max_items"]);
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diff changeset
441 reverse = true;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
442 });
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parents:
diff changeset
443 if not data then
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diff changeset
444 module:log("error", "Unable to get items: %s", err);
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diff changeset
445 return true;
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parents:
diff changeset
446 end
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diff changeset
447 module:log("debug", "Listed items %s", data);
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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parents:
diff changeset
448 return it.reverse(function()
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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parents:
diff changeset
449 local id, payload, when, publisher = data();
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parents:
diff changeset
450 if id == nil then
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parents:
diff changeset
451 return;
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parents:
diff changeset
452 end
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453 local item = create_encapsulating_item(id, payload, publisher);
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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parents:
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454 return id, item;
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
455 end);
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parents:
diff changeset
456 end
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
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diff changeset
457 function get_set:get(key) -- luacheck: ignore 212/self
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
458 local data, err = archive:find(user, {
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
459 key = key;
cb2342cf3f3c mod_pep_plus: Snapshot from Prosody trunk 910d3c3f60a6 including dependencies
Kim Alvefur <zash@zash.se>
parents:
diff changeset
460 -- Get the last item with that key, if the archive doesn't deduplicate
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parents:
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461 reverse = true,
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462 limit = 1;
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463 });
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464 if not data then
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465 module:log("error", "Unable to get item: %s", err);
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466 return nil, err;
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467 end
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468 local id, payload, when, publisher = data();
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469 module:log("debug", "Get item %s (published at %s by %s)", id, when, publisher);
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470 if id == nil then
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471 return nil;
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472 end
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473 return create_encapsulating_item(id, payload, publisher);
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474 end
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475 function get_set:set(key, value) -- luacheck: ignore 212/self
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476 local data, err;
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477 if value ~= nil then
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478 local publisher = value.attr.publisher;
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479 local payload = value.tags[1];
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480 data, err = archive:append(user, key, payload, time_now(), publisher);
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481 else
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482 data, err = archive:delete(user, { key = key; });
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483 end
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484 if not data then
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485 module:log("error", "Unable to set item: %s", err);
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486 return nil, err;
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487 end
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488 return data;
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489 end
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490 function get_set:clear() -- luacheck: ignore 212/self
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491 return archive:delete(user);
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492 end
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493 return setmetatable(get_set, archive);
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494 end
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495 _M.archive_itemstore = archive_itemstore;
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496
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497 return _M;