Mercurial > eldonilo > lightstring

annotate lightstring.js @ 43:136df1708856

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