Mercurial > eldonilo > lightstring

annotate lightstring.js @ 47:ea276b47c555

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Fix feature-not-implemented plugin.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Wed, 01 Feb 2012 00:41:09 +0100
parents 3dfb596cf669
children 770bb8460df8
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1
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1 'use strict';
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2
2
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3 /**
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4 Copyright (c) 2011, Sonny Piers <sonny at fastmail dot net>
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5
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6 Permission to use, copy, modify, and/or distribute this software for any
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7 purpose with or without fee is hereby granted, provided that the above
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8 copyright notice and this permission notice appear in all copies.
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9
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10 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19
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20 /**
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21 * @namespace No code from lightstring should be callable outside this namespace/scope.
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22 */
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23 var Lightstring = {
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24 /**
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25 * @namespace Holds XMPP namespaces.
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26 */
44
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27 ns: {
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28 stream: 'http://etherx.jabber.org/streams',
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29 jabberClient: 'jabber:client'
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30 },
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31 /**
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32 * @namespace Holds XMPP stanza builders.
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33 */
44
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34 stanzas: {
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35 stream: {
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36 open: function(aService) {
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37 //FIXME no ending "/" - node-xmpp-bosh bug
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38 return "<stream:stream to='" + aService + "'" +
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39 " xmlns='" + Lightstring.ns.jabberClient + "'" +
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40 " xmlns:stream='" + Lightstring.ns.stream + "'" +
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41 " version='1.0'/>";
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42 },
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43 close: function() {
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44 return "</stream:stream>";
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45 }
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46 }
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47 },
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48 plugins: {},
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49 /**
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50 * @private
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51 */
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52 parser: new DOMParser(),
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53 /**
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54 * @private
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55 */
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56 serializer: new XMLSerializer(),
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57 /**
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58 * @function Transforms a XML string to a DOM object.
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59 * @param {String} aString XML string.
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60 * @return {Object} Domified XML.
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61 */
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62 XML2DOM: function(aString) {
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63 var DOM = null;
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64 try {
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65 DOM = this.parser.parseFromString(aString, 'text/xml').documentElement;
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66 }
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67 catch (e) {
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68 alert(e);
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69 }
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70 finally {
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71 return DOM;
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72 };
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73 },
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74 /**
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75 * @function Transforms a DOM object to a XML string.
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76 * @param {Object} aString DOM object.
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77 * @return {String} Stringified DOM.
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78 */
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79 DOM2XML: function(aElement) {
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80 var XML = null;
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81 try {
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82 XML = this.serializer.serializeToString(aElement);
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83 }
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84 catch (e) {
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85 alert(e);
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86 }
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87 finally {
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88 return XML;
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89 };
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90 },
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91 /**
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92 * @function Get an unique identifier.
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93 * @param {String} [aString] Prefix to put before the identifier.
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94 * @return {String} Identifier.
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95 */
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96 newId: (function() {
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97 var id = 1024;
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98 return function(prefix) {
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99 if (typeof prefix === 'string')
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100 return prefix + id++;
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101 return '' + id++;
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102 };
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103 })()
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104 };
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105
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106 /**
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107 * @constructor Creates a new Lightstring connection
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108 * @param {String} [aService] The Websocket service URL.
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109 * @memberOf Lightstring
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110 */
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111 Lightstring.Connection = function(aService) {
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112 if (aService)
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113 this.service = aService;
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114 this.handlers = {};
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115 this.on('stream:features', function(stanza) {
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116 var nodes = stanza.DOM.querySelectorAll('mechanism');
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117 //SASL/Auth features
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118 if (nodes.length > 0) {
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119 this.emit('mechanisms', stanza);
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120 var mechanisms = {};
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121 for (var i = 0; i < nodes.length; i++)
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122 mechanisms[nodes[i].textContent] = true;
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123
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124
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125 //FIXME support SCRAM-SHA1 && allow specify method preferences
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126 if ('DIGEST-MD5' in mechanisms)
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127 this.send(
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128 "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" +
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129 " mechanism='DIGEST-MD5'/>"
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130 );
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131 else if ('PLAIN' in mechanisms) {
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132 var token = btoa(
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133 this.jid +
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134 '\u0000' +
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135 this.jid.node +
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136 '\u0000' +
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137 this.password
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138 );
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139 this.send(
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140 "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" +
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141 " mechanism='PLAIN'>" + token + "</auth>"
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142 );
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143 }
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144 }
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145 //XMPP features
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146 else {
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147 this.emit('features', stanza);
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148 //Bind http://xmpp.org/rfcs/rfc3920.html#bind
24
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149 var bind =
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150 "<iq type='set' xmlns='jabber:client'>" +
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151 "<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>" +
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152 (this.jid.resource? "<resource>" + this.jid.resource + "</resource>": "") +
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153 "</bind>" +
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154 "</iq>";
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155
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156 this.send(
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157 bind,
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158 function(stanza) {
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159 //Session http://xmpp.org/rfcs/rfc3921.html#session
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160 this.jid = new Lightstring.JID(stanza.DOM.textContent);
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161 this.send(
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162 "<iq type='set' xmlns='jabber:client'>" +
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163 "<session xmlns='urn:ietf:params:xml:ns:xmpp-session'/>" +
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164 "</iq>",
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165 function() {
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166 this.emit('connected');
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167 }
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168 );
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169 }
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170 );
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171 }
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172 });
41
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173 this.on('success', function(stanza) {
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174 this.send(
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175 "<stream:stream to='" + this.jid.domain + "'" +
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176 " xmlns='jabber:client'" +
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177 " xmlns:stream='http://etherx.jabber.org/streams'" +
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178 " version='1.0'/>"
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179 );
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180 });
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181 this.on('failure', function(stanza) {
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182 this.emit('conn-error', stanza.DOM.firstChild.tagName);
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183 });
41
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184 this.on('challenge', function(stanza) {
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185 //FIXME this is mostly Strophe code
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186
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187 function _quote(str) {
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188 return '"' + str.replace(/\\/g, '\\\\').replace(/"/g, '\\"') + '"';
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189 };
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190
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191 var challenge = atob(stanza.DOM.textContent);
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192
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193 var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
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194
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195 var cnonce = MD5.hexdigest(Math.random() * 1234567890);
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196 var realm = '';
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197 var host = null;
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198 var nonce = '';
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199 var qop = '';
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200 var matches;
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201
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202 while (challenge.match(attribMatch)) {
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203 matches = challenge.match(attribMatch);
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204 challenge = challenge.replace(matches[0], '');
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205 matches[2] = matches[2].replace(/^"(.+)"$/, '$1');
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206 switch (matches[1]) {
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207 case 'realm':
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208 realm = matches[2];
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209 break;
13
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210 case 'nonce':
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211 nonce = matches[2];
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212 break;
13
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213 case 'qop':
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214 qop = matches[2];
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215 break;
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216 case 'host':
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217 host = matches[2];
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218 break;
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219 }
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220 }
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221
41
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222 var digest_uri = 'xmpp/' + this.jid.domain;
21
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223 if (host !== null)
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224 digest_uri = digest_uri + '/' + host;
41
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225 var A1 = MD5.hash(this.jid.node +
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226 ':' + realm + ':' + this.password) +
22
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227 ':' + nonce + ':' + cnonce;
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228 var A2 = 'AUTHENTICATE:' + digest_uri;
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229
13
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230 var responseText = '';
41
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231 responseText += 'username=' + _quote(this.jid.node) + ',';
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232 responseText += 'realm=' + _quote(realm) + ',';
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233 responseText += 'nonce=' + _quote(nonce) + ',';
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234 responseText += 'cnonce=' + _quote(cnonce) + ',';
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235 responseText += 'nc="00000001",';
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236 responseText += 'qop="auth",';
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237 responseText += 'digest-uri=' + _quote(digest_uri) + ',';
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238 responseText += 'response=' + _quote(
13
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diff changeset
239 MD5.hexdigest(MD5.hexdigest(A1) + ':' +
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diff changeset
240 nonce + ':00000001:' +
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241 cnonce + ':auth:' +
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242 MD5.hexdigest(A2))) + ',';
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243 responseText += 'charset="utf-8"';
41
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244 this.send(
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245 "<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" +
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246 btoa(responseText) +
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247 "</response>");
1
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248 });
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249 };
17
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250 Lightstring.Connection.prototype = {
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diff changeset
251 /**
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252 * @function Create and open a websocket then go though the XMPP authentification process.
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253 * @param {String} [aJid] The JID (Jabber id) to use.
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254 * @param {String} [aPassword] The associated password.
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255 */
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256 connect: function(aJid, aPassword) {
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257 this.emit('connecting');
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258 this.jid = new Lightstring.JID(aJid);
17
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259 if (aPassword)
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260 this.password = aPassword;
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261
22
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262 if (!this.jid.bare)
17
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263 throw 'Lightstring: Connection.jid is undefined.';
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diff changeset
264 if (!this.password)
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diff changeset
265 throw 'Lightstring: Connection.password is undefined.';
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diff changeset
266 if (!this.service)
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diff changeset
267 throw 'Lightstring: Connection.service is undefined.';
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268
40
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269 if(typeof(WebSocket) === "function") {
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270 this.socket = new WebSocket(this.service, 'xmpp');
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diff changeset
271 }
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272 else if(typeof(MozWebSocket) === "function") {
39
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diff changeset
273 this.socket = new MozWebSocket(this.service, 'xmpp');
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diff changeset
274 }
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parents: 37
diff changeset
275 else {
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276 throw new Error('WebSocket not available.');
17
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diff changeset
277 }
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parents: 16
diff changeset
278
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279 var that = this;
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diff changeset
280 this.socket.addEventListener('open', function() {
29
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281 //TODO: if (this.protocol !== 'xmpp')
17
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282
44
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283 var stream = Lightstring.stanzas.stream.open(that.jid.domain);
29
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284 //TODO: Use Lightstring.Connection.send (problem with parsing steam);
17
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285 that.socket.send(stream);
29
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286 var stanza = {
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287 XML: stream
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288 };
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289 that.emit('output', stanza);
17
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290 });
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291 this.socket.addEventListener('error', function(e) {
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292 that.emit('error', e.data);
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293 console.log(e.data);
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294 });
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295 this.socket.addEventListener('close', function(e) {
18
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296 that.emit('disconnected', e.data);
17
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297 });
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298 this.socket.addEventListener('message', function(e) {
29
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299 var stanza = new Lightstring.Stanza(e.data);
17
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300
29
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301 //TODO node-xmpp-bosh sends a self-closing stream:stream tag; it is wrong!
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302 that.emit('input', stanza);
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303
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304 if(!stanza.DOM)
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305 return;
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306
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307 that.emit(stanza.DOM.tagName, stanza);
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308
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diff changeset
309 if (stanza.DOM.tagName === 'iq') {
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310 var payload = stanza.DOM.firstChild;
23
99bf2bdcfd96 Emit an iq/namespace:tag event for each iq containing a payload.
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diff changeset
311 if (payload)
29
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diff changeset
312 that.emit('iq/' + payload.namespaceURI + ':' + payload.localName, stanza);
43
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313
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diff changeset
314 var id = stanza.DOM.getAttributeNS(null, 'id');
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diff changeset
315 if (!(id && id in that.callbacks))
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diff changeset
316 return;
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317
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diff changeset
318 var type = stanza.DOM.getAttributeNS(null, 'type');
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diff changeset
319 if (type !== 'result' || type !== 'error')
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diff changeset
320 return; //TODO: emit an warning, perhaps.
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diff changeset
321
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diff changeset
322 var callback = that.callbacks[id];
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323 if (type === 'result' && callback.result)
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324 callback.result(stanza);
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325 else if (type === 'error' && callback.error)
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326 callback.error(stanza);
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327
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328 delete that.callbacks[id];
41
2895891f19bb s/that/this/ in handlers.
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329
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330 //TODO: really needed?
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diff changeset
331 } else if (stanza.DOM.tagName === 'message') {
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332 var payloads = stanza.DOM.children;
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diff changeset
333 for (var i = 0; i < payloads.length; i++)
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diff changeset
334 that.emit('message/' + payloads[i].namespaceURI + ':' + payloads[i].localName, stanza);
23
99bf2bdcfd96 Emit an iq/namespace:tag event for each iq containing a payload.
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parents: 22
diff changeset
335 }
17
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parents: 16
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336 });
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parents: 16
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337 },
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parents: 16
diff changeset
338 /**
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339 * @function Send a message.
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340 * @param {String|Object} aStanza The message to send.
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341 * @param {Function} [aCallback] Executed on answer. (stanza must be iq)
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diff changeset
342 */
43
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diff changeset
343 send: function(aStanza, aResult, aError) {
29
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344 if (!(aStanza instanceof Lightstring.Stanza))
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345 var stanza = new Lightstring.Stanza(aStanza);
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diff changeset
346 else
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diff changeset
347 var stanza = aStanza;
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diff changeset
348
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diff changeset
349 if(!stanza)
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diff changeset
350 return;
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diff changeset
351
1e6d2ca2daae Adds a Lightstring.Stanza object and use it.
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parents: 28
diff changeset
352 if (stanza.DOM.tagName === 'iq') {
42
ee874d064650 Check iq sending.
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parents: 41
diff changeset
353 var type = stanza.DOM.getAttributeNS(null, 'type');
ee874d064650 Check iq sending.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 41
diff changeset
354 if (type !== 'get' || type !== 'set')
ee874d064650 Check iq sending.
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parents: 41
diff changeset
355 ; //TODO: emit an error.
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parents: 41
diff changeset
356
43
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parents: 42
diff changeset
357 var callback = {result: aResult, error: aError};
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parents: 42
diff changeset
358
42
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parents: 41
diff changeset
359 var id = stanza.DOM.getAttributeNS(null, 'id');
43
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parents: 42
diff changeset
360 if (!id)
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parents: 42
diff changeset
361 ; //TODO: emit an warning.
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parents: 42
diff changeset
362 else
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
363 this.callback[id] = callback;
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
364
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
365 } else if (aResult || aError)
42
ee874d064650 Check iq sending.
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parents: 41
diff changeset
366 ; //TODO: callback can’t be called with non-iq stanza.
17
b7bd814333eb Move methods to the prototype.
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parents: 16
diff changeset
367
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parents: 16
diff changeset
368
29
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parents: 28
diff changeset
369 //TODO this.socket.send(stanza.XML); (need some work on Lightstring.Stanza)
37
6773e5bc2ca0 several fixes
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parents: 34
diff changeset
370 var fixme = Lightstring.DOM2XML(stanza.DOM);
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parents: 34
diff changeset
371 stanza.XML = fixme;
6773e5bc2ca0 several fixes
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diff changeset
372 this.socket.send(fixme);
29
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diff changeset
373 this.emit('output', stanza);
17
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parents: 16
diff changeset
374 },
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parents: 16
diff changeset
375 /**
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parents: 16
diff changeset
376 * @function Closes the XMPP stream and the socket.
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parents: 16
diff changeset
377 */
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parents: 16
diff changeset
378 disconnect: function() {
18
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
379 this.emit('disconnecting');
44
3dfb596cf669 Add a plugin loader.
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diff changeset
380 var stream = Lightstring.stanzas.stream.close();
18
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diff changeset
381 this.send(stream);
17
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parents: 16
diff changeset
382 this.emit('XMLOutput', stream);
18
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
383 this.socket.close();
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
384 },
44
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
385 load: function() {
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parents: 43
diff changeset
386 for (var i = 0; i < arguments.length; i++) {
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diff changeset
387 var name = arguments[i];
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parents: 43
diff changeset
388 if (!(name in Lightstring.plugins))
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parents: 43
diff changeset
389 continue; //TODO: throw an error?
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parents: 43
diff changeset
390
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
391 var plugin = Lightstring.plugins[name];
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
392
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
393 for (var ns in plugin.namespaces)
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
394 Lightstring.ns[ns] = plugin.namespaces[ns];
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parents: 43
diff changeset
395
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
396 for (var stanza in plugin.stanzas)
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
397 Lightstring.stanzas[stanza] = plugin.stanzas[stanza];
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
398
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
399 for (var handler in plugin.handlers)
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
400 this.on(handler, plugin.handlers[handler]);
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
401
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
402 for (var method in plugin.methods)
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
403 this.methods[method] = plugin.methods[method];
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 43
diff changeset
404 }
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
405 },
17
b7bd814333eb Move methods to the prototype.
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parents: 16
diff changeset
406 /**
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parents: 16
diff changeset
407 * @function Emits an event.
b7bd814333eb Move methods to the prototype.
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408 * @param {String} aName The event name.
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Sonny Piers <sonny.piers@gmail.com>
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409 * @param {Function|Array|Object} [aData] Data about the event.
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410 */
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411 emit: function(aName, aData) {
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412 var handlers = this.handlers[aName];
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Sonny Piers <sonny.piers@gmail.com>
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413 if (!handlers)
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Sonny Piers <sonny.piers@gmail.com>
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414 return;
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415
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416 for (var i = 0; i < handlers.length; i++)
41
2895891f19bb s/that/this/ in handlers.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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417 handlers[i].call(this, aData);
17
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Sonny Piers <sonny.piers@gmail.com>
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418 },
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Sonny Piers <sonny.piers@gmail.com>
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419 /**
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Sonny Piers <sonny.piers@gmail.com>
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420 * @function Register an event handler.
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Sonny Piers <sonny.piers@gmail.com>
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421 * @param {String} aName The event name.
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Sonny Piers <sonny.piers@gmail.com>
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422 * @param {Function} aCallback The callback to call when the event is emitted.
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Sonny Piers <sonny.piers@gmail.com>
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423 */
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Sonny Piers <sonny.piers@gmail.com>
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424 on: function(aName, callback) {
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Sonny Piers <sonny.piers@gmail.com>
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425 if (!this.handlers[aName])
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Sonny Piers <sonny.piers@gmail.com>
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426 this.handlers[aName] = [];
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Sonny Piers <sonny.piers@gmail.com>
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427 this.handlers[aName].push(callback);
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Sonny Piers <sonny.piers@gmail.com>
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428 }
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Sonny Piers <sonny.piers@gmail.com>
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429 };