Mercurial > psgxs

annotate storage.js @ 26:f2e9365bc8ec

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Can use differents backends for node storage. Writing directory-based backend in top of file-based backend.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Mon, 01 Nov 2010 02:39:58 +0100
parents 9a6b8b3357c6
children 62cbb1c49bc5
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1 /*
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2 * Copyright (C) 2010 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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3 *
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4 * This file is part of PSĜS, a PubSub server written in JavaScript.
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5 *
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6 * PSĜS is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU Affero General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License.
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10 *
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11 * PSĜS is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with PSĜS. If not, see <http://www.gnu.org/licenses/>.
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18 */
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19
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20 var fs = require('fs');
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21 var sha1hex = require('sha1').hex;
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22 require('./iso8601');
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23 var errors = require('./errors');
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24 var config = require('./configuration');
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25 var service_configuration = config.service_configuration;
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26 var Configuration = config.Configuration;
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27 var utils = require('./util');
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28 var toBareJID = utils.toBareJID;
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29
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30 var nodes = require('./nodes');
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31 var Node = nodes.Node;
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32 var Item = nodes.Item;
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33
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34 var storage = exports;
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36 var backend = require('./backends/' + config.backend);
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37 storage.load = backend.load;
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38 storage.save = backend.save;
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39
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40 storage.createNode = function(nodeID, params) {
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41 for (var i in backend.list)
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42 if (i == nodeID)
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43 return errors.owner.create.nodeid_already_exists.n;
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44
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45 backend.list[nodeID] = new Node(params);
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46 storage.save();
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47 return errors.success;
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48 };
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49
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50 storage.getMetadata = function(nodeID) {
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51 var node = storage.getNode(nodeID);
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52 if (typeof node == 'number')
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53 return node;
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54
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55 if (!config.enabled('meta-data'))
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56 return {};
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57
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58 var md = {};
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59 for (var i in service_configuration.node_metadata) {
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60 if (i == 'FORM_TYPE')
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61 continue;
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62
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63 if (node.configuration[i])
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64 md[i] = node.configuration[i];
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65 else if (node.metadata[i])
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66 md[i] = node.metadata[i];
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67 }
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68 return md;
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69 };
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71 storage.getConfiguration = function(nodeID) {
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72 var node = storage.getNode(nodeID);
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73 if (typeof node == 'number')
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74 return node;
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75
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76 if (config.enabled('config-node'))
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77 return node.configuration;
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78
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79 return {}; //FIXME
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80 };
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81
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82 storage.configure = function(nodeID, params) {
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83 var node = storage.getNode(nodeID);
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84 if (typeof node == 'number')
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85 return node;
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86
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87 if (!config.enabled('config-node'))
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88 return 42; //FIXME
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89
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90 for (var i in params)
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91 if (service_configuration.node_config[i])
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92 node.configuration[i] = params[i];
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93
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94 storage.save();
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95 return errors.success;
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96 };
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97
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98 storage.configureSubscription = function(nodeID, jid, params) {
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99 var node = storage.getNode(nodeID);
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100 if (typeof node == 'number')
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101 return node;
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102
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103 if (!config.enabled('subscription-options'))
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104 return 42; //FIXME
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105
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106 var options = node.subscribers[jid].options;
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107 if (!options)
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108 return 42; //FIXME
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109
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110 for (var i in params)
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111 if (service_configuration.subscribe_options[i])
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112 options[i] = params[i];
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113
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114 storage.save();
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115 return errors.success;
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116 };
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117
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118 storage.getChildren = function(node) {
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119 var n;
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120 var items = {};
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121 if (node)
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122 n = storage.getNode(node).items;
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123 else
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124 n = backend.list;
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125
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126 for (var i in n) {
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127 var type;
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128 if (n[i].content)
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129 type = 'item';
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130 else
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131 type = 'node';
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132 items[i] = type;
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133 }
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134 return items;
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135 };
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136
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137 storage.getNode = function(nodeID) {
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138 if (backend.list[nodeID])
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139 return backend.list[nodeID];
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140 return errors.node_does_not_exist.n;
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141 };
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142
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143 storage.existsNode = function(nodeID) {
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144 if (backend.list[nodeID])
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145 return true;
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146 return false;
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147 };
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148
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149 storage.purgeNode = function(nodeID) {
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150 var node = storage.getNode(nodeID);
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151 if (typeof n == 'number')
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152 return node;
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153
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154 var notifs = storage.getSubscriptionsFromNodeID(nodeID);
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155
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156 var item = storage.getLastItem(nodeID);
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157 if (typeof item == 'number') {
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158 node.items = {};
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159 } else {
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160 items = node.items[item];
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161 node.items = {};
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162 node.items[item] = items;
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163 }
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164
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165 storage.save();
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166 return notifs;
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167 };
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168
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169 storage.deleteNodeWithRedirect = function(nodeID, uri) {
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170 var del = storage.deleteNode(nodeID);
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171 if (typeof del == 'number')
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172 return del;
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173
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174 backend.list[nodeID] = uri;
0
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175 storage.save();
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176 return errors.success;
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177 };
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178
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179 storage.deleteNode = function(nodeID) {
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180 var node = storage.getNode(nodeID);
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181 if (typeof n == 'number')
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182 return node;
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183
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184 var notifs = {};
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185 for (var i in node.subscribers)
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186 notifs[i] = {};
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187 for (var i in node.owner)
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188 notifs[node.owner[i]] = {};
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189 if (config.enabled('publisher-affiliation'))
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190 for (var i in node.publisher)
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191 notifs[node.publisher[i]] = {};
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192 if (config.enabled('publish-only-affiliation'))
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193 for (var i in node.publishOnly)
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194 notifs[node.publishOnly[i]] = {};
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195
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196 delete backend.list[nodeID];
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197 storage.save();
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198 return notifs;
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199 };
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200
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201 storage.setItem = function(nodeID, itemID, content) {
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202 var node = storage.getNode(nodeID);
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203 if (typeof node == 'number')
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204 return node;
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205
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206 if (typeof itemID != 'string')
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207 itemID = utils.makeRandomId();
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208
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209 i = node.setItem(itemID, content);
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210 if (content)
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211 i.content = content;
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212
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213 storage.save();
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214 return storage.getSubscriptionsFromNodeID(nodeID)
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215 };
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216
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217 storage.deleteItem = function(nodeID, itemID) {
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218 var node = storage.getNode(nodeID);
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219 if (typeof node == 'number')
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220 return node;
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221
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222 if (typeof itemID != 'string')
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223 return errors.pub.retract.item_or_itemid_required.n;
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224
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225 item = node.setItem(itemID);
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226 if (typeof item == 'number')
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227 return item;
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228
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229 storage.save();
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230 return storage.getSubscriptionsFromNodeID(nodeID)
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231 };
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232
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233 storage.getItems = function(nodeID) {
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234 var node;
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235 if (typeof nodeID == 'string')
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236 node = storage.getNode(nodeID);
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237 else
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238 node = nodeID;
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239
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240 if (typeof node == 'number')
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241 return node;
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242
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243 return node.items;
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244 };
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245
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246 storage.getLastItem = function(nodeID, number) {
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247 var items = storage.getItems(nodeID);
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248 if (typeof items == 'number')
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249 return items;
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250
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251 if (items == {})
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252 return 42; //FIXME
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253
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254 if (number) {
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255 var last = [];
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256 var j = 0;
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257 for (var i in items) {
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258 last.push({name: i, date: items[i].date, content: items[i].content});
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259 j++;
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260 }
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261 if (j < number)
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262 return last;
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263
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264 var cmp = function(a, b) {
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265 return b.date - a.date;
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266 }
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267 last = last.sort(cmp).slice(0, number);
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268 } else {
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269 var last;
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270 for (var i in items)
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271 if ((typeof last == 'undefined') || (items[i].date >= items[last].date))
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272 last = i;
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273 }
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274
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275 if (last)
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276 return last;
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277 return 42; //FIXME
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278 };
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279
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280 storage.existsItem = function(nodeID, itemID) {
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281 var items = storage.getItems(nodeID);
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282 if (typeof items == 'number')
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283 return items;
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284
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285 for (var i in items)
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286 if (i == itemID)
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287 return items[i];
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288 return false;
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289 };
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290
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291 storage.getItem = function(nodeID, itemID) {
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292 var items = storage.getItems(nodeID);
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293 if (typeof items == 'number')
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294 return items;
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295
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296 if (items[itemID])
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297 return items[itemID].content;
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298
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299 return errors.success;
0
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300 };
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301
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302 storage.getSubscription = function(jid, nodeID) {
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303 var subs = {};
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304 if (nodeID) {
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305 var node = storage.getNode(nodeID);
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306 for (var sub in node.subscribers)
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307 if (toBareJID(sub) == jid)
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308 return node.subscribers[sub]
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309 } else {
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310 for (var node in backend.list) {
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311 for (var sub in backend.list[node].subscribers) {
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312 if (toBareJID(sub) == jid)
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313 subs[node] = backend.list[node].subscribers[sub];
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314 }
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315 }
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316 }
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317 return subs;
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318 };
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319
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320 storage.getSubscriptionsFromNodeID = function(nodeID) {
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321 var node;
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322 if (typeof nodeID == 'string') {
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323 node = storage.getNode(nodeID);
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324 if (typeof node == 'number')
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325 return node;
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326 } else
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327 node = nodeID;
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328
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329 var subs = {};
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330 for (var sub in node.subscribers) {
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parents:
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331 if (typeof sub == 'string') {
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332 var subscription = {subid: node.subscribers[sub].subid, type: node.subscribers[sub].type};
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333 if (node.subscribers[sub].options)
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334 subscription.options = node.subscribers[sub].options;
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parents:
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335 subs[sub] = subscription;
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parents:
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336 }
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parents:
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337 }
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338 return subs;
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parents:
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339 };
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340
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341 storage.subscribe = function(nodeID, jid, type, params) {
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342 if (!config.enabled('subscribe'))
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343 return errors.sub.subscribe.not_supported.n;
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344
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345 var node = storage.getNode(nodeID);
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346 if (typeof node == 'number')
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347 return node;
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348
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349 if (typeof type == 'undefined')
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350 type = 'subscribed';
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351
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352 if (type == 'none') {
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353 if (!node.subscribers[jid])
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354 return errors.sub.unsubscribe.no_such_subscriber.n;
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parents:
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355 }
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parents:
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356
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357 var subid = node.setSubscriber(jid, type, null, params);
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358 storage.save();
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359 return {subid: subid, type: type};
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parents:
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360 };
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361
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362 storage.setAffiliation = function(nodeID, jid, affil) {
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363 var node = storage.getNode(nodeID);
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parents:
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364 if (typeof node == 'number')
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365 return node;
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366
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367 if (affil == 'owner')
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368 node.owner.push(jid);
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369 else if (config.enabled('publisher-affiliation') && affil == 'publisher')
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370 node.publisher.push(jid);
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371 else if (config.enabled('publish-only-affiliation') && affil == 'publish-only')
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372 node.publishOnly.push(jid);
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373 else if (config.enabled('member-affiliation') && affil == 'member')
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374 node.member.push(jid);
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375 else if (config.enabled('outcast-affiliation') && affil == 'outcast')
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376 node.outcast.push(jid);
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377
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378 storage.save();
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379 return errors.success;
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parents:
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380 };
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381
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382 storage.getAffiliation = function(jid, nodeID) {
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383 var node;
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parents:
diff changeset
384 if (typeof nodeID == 'string') {
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385 node = storage.getNode(nodeID);
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parents:
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386 if (typeof node == 'number')
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387 return node;
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parents:
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388 } else
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389 node = nodeID;
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390
1
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parents: 0
diff changeset
391 for (var affil in config.owner)
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parents: 0
diff changeset
392 if (typeof affil == 'string' && node.owner[affil] == jid)
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diff changeset
393 return 'super-owner';
0
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394 for (var affil in node.owner)
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parents:
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395 if (typeof affil == 'string' && node.owner[affil] == jid)
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396 return 'owner';
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parents:
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397 if (config.enabled('publisher-affiliation'))
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parents:
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398 for (var affil in node.publisher)
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399 if (typeof affil == 'string' && node.publisher[affil] == jid)
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400 return 'publisher';
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parents:
diff changeset
401 if (config.enabled('publish-only-affiliation'))
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parents:
diff changeset
402 for (var affil in node.publishOnly)
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parents:
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403 if (typeof affil == 'string' && node.publishOnly[affil] == jid)
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parents:
diff changeset
404 return 'publish-only';
6
2bcadb0531f4 A few changes.
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parents: 5
diff changeset
405 if (config.enabled('member-affiliation'))
2bcadb0531f4 A few changes.
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parents: 5
diff changeset
406 for (var affil in node.member)
2bcadb0531f4 A few changes.
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parents: 5
diff changeset
407 if (typeof affil == 'string' && node.member[affil] == jid)
2bcadb0531f4 A few changes.
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diff changeset
408 return 'member';
0
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parents:
diff changeset
409 if (config.enabled('outcast-affiliation'))
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parents:
diff changeset
410 for (var affil in node.outcast)
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parents:
diff changeset
411 if (typeof affil == 'string' && node.outcast[affil] == jid)
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parents:
diff changeset
412 return 'outcast';
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parents:
diff changeset
413 return 'none';
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parents:
diff changeset
414 };
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
415
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parents:
diff changeset
416 storage.getAffiliationsFromJID = function(jid) {
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diff changeset
417 var affils = {};
26
f2e9365bc8ec Can use differents backends for node storage. Writing directory-based backend in top of file-based backend.
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parents: 12
diff changeset
418 for (var nodeID in backend.list) {
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parents: 12
diff changeset
419 var node = backend.list[nodeID];
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c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
420 for (var affil in config.owner)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
421 if (typeof affil == 'string' && config.owner[affil] == jid) {
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
422 affils[nodeID] = 'super-owner';
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
423 break;
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
424 }
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
425 for (var affil in node.owner)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
426 if (typeof affil == 'string' && node.owner[affil] == jid) {
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
427 affils[nodeID] = 'owner';
0
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parents:
diff changeset
428 break;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
429 }
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
430 if (config.enabled('publisher-affiliation'))
1
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
431 for (var affil in node.publisher)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
432 if (typeof affil == 'string' && node.publisher[affil] == jid) {
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
433 affils[nodeID] = 'publisher';
0
9ee956af41e3 Initial commit
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parents:
diff changeset
434 break;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
435 }
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
436 if (config.enabled('publish-only-affiliation'))
1
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
437 for (var affil in node.publishOnly)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
438 if (typeof affil == 'string' && node.publishOnly[affil] == jid) {
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
439 affils[nodeID] = 'publish-only';
0
9ee956af41e3 Initial commit
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parents:
diff changeset
440 break;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
441 }
6
2bcadb0531f4 A few changes.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
442 if (config.enabled('member-affiliation'))
2bcadb0531f4 A few changes.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
443 for (var affil in node.member)
2bcadb0531f4 A few changes.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
444 if (typeof affil == 'string' && node.member[affil] == jid) {
2bcadb0531f4 A few changes.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
445 affils[nodeID] = 'member';
2bcadb0531f4 A few changes.
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parents: 5
diff changeset
446 break;
2bcadb0531f4 A few changes.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 5
diff changeset
447 }
0
9ee956af41e3 Initial commit
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parents:
diff changeset
448 if (config.enabled('outcast-affiliation'))
1
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
449 for (var affil in node.outcast)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
450 if (typeof affil == 'string' && node.outcast[affil] == jid) {
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
451 affils[nodeID] = 'outcast';
0
9ee956af41e3 Initial commit
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parents:
diff changeset
452 break;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
453 }
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
454 }
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
455 return affils;
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
456 };
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
457
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parents:
diff changeset
458 storage.getAffiliationsFromNodeID = function(nodeID) {
9ee956af41e3 Initial commit
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parents:
diff changeset
459 var node;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
460 if (typeof nodeID == 'string') {
9ee956af41e3 Initial commit
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parents:
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461 node = storage.getNode(nodeID);
9ee956af41e3 Initial commit
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parents:
diff changeset
462 if (typeof node == 'number')
9ee956af41e3 Initial commit
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parents:
diff changeset
463 return node;
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
464 } else
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parents:
diff changeset
465 node = nodeID;
9ee956af41e3 Initial commit
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parents:
diff changeset
466
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parents:
diff changeset
467 var affils = {};
1
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
468 for (var jid in config.owner)
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 0
diff changeset
469 if (typeof jid == 'string')
c2954a9e5665 Add a super-owner that has power over all nodes; add support for
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parents: 0
diff changeset
470 affils[config.owner[jid]] = 'super-owner';
0
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parents:
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471 for (var jid in node.owner)
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parents:
diff changeset
472 if (typeof jid == 'string')
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parents:
diff changeset
473 affils[node.owner[jid]] = 'owner';
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
474 if (config.enabled('publisher-affiliation'))
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
475 for (var jid in node.publisher)
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
diff changeset
476 if (typeof jid == 'string')
9ee956af41e3 Initial commit
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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477 affils[node.publisher[jid]] = 'publisher';
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478 if (config.enabled('publish-only-affiliation'))
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479 for (var jid in node.publishOnly)
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480 if (typeof jid == 'string')
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481 affils[node.publishOnly[jid]] = 'publish-only';
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482 if (config.enabled('member-affiliation'))
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483 for (var jid in node.member)
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484 if (typeof jid == 'string')
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485 affils[node.member[jid]] = 'member';
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486 if (config.enabled('outcast-affiliation'))
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487 for (var jid in node.outcast)
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488 if (typeof jid == 'string')
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489 affils[node.outcast[jid]] = 'outcast';
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490 return affils;
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491 };
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492
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493 storage.debug = function() {
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f2e9365bc8ec Can use differents backends for node storage. Writing directory-based backend in top of file-based backend.
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494 console.log('\033[1;33m' + require('sys').inspect(backend.list, null, null) + '\033[0m');
0
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495 };