Mercurial > eldonilo > lightstring

annotate lightstring.js @ 60:0e86fca6a596

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author Sonny Piers <sonny.piers@gmail.com>
date Wed, 01 Feb 2012 17:48:11 +0100
parents bbcc6bbdac73
children b1e75cdbb0ad
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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 * @description http://xmpp.org/xmpp-protocols/protocol-namespaces
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27 */
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28 ns: {
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29 streams: 'http://etherx.jabber.org/streams',
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30 jabber_client: 'jabber:client'
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31 },
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32 /**
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33 * @namespace Holds XMPP stanza builders.
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34 */
44
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35 stanzas: {
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36 stream: {
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37 open: function(aService) {
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38 //FIXME no ending "/" - node-xmpp-bosh bug
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39 return "<stream:stream to='" + aService + "'" +
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40 " xmlns='" + Lightstring.ns['jabber_client'] + "'" +
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41 " xmlns:stream='" + Lightstring.ns['streams'] + "'" +
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42 " version='1.0'/>";
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43 },
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44 close: function() {
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45 return "</stream:stream>";
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46 }
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47 }
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48 },
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49 plugins: {},
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50 /**
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51 * @private
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52 */
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53 parser: new DOMParser(),
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54 /**
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55 * @private
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56 */
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57 serializer: new XMLSerializer(),
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58 /**
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59 * @function Transforms a XML string to a DOM object.
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60 * @param {String} aString XML string.
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61 * @return {Object} Domified XML.
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62 */
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63 XML2DOM: function(aString) {
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64 var DOM = null;
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65 try {
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66 DOM = this.parser.parseFromString(aString, 'text/xml').documentElement;
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67 }
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68 catch (e) {
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69 alert(e);
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70 }
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71 finally {
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72 return DOM;
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73 };
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74 },
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75 /**
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76 * @function Transforms a DOM object to a XML string.
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77 * @param {Object} aString DOM object.
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78 * @return {String} Stringified DOM.
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79 */
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80 DOM2XML: function(aElement) {
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81 var XML = null;
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82 try {
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83 XML = this.serializer.serializeToString(aElement);
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84 }
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85 catch (e) {
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86 //TODO throw error
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87 }
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88 finally {
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89 return XML;
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90 };
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91 },
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92 /**
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93 * @function Get an unique identifier.
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94 * @param {String} [aString] Prefix to put before the identifier.
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95 * @return {String} Identifier.
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96 */
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97 newId: (function() {
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98 var id = 1024;
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99 return function(prefix) {
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100 if (typeof prefix === 'string')
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101 return prefix + id++;
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102 return '' + id++;
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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 /**
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108 * @constructor Creates a new Lightstring connection
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109 * @param {String} [aService] The Websocket service URL.
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110 * @memberOf Lightstring
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111 */
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112 Lightstring.Connection = function(aService) {
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113 if (aService)
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114 this.service = aService;
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115 this.handlers = {};
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116 this.callbacks = {};
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117 this.on('stream:features', function(stanza) {
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118 var nodes = stanza.DOM.querySelectorAll('mechanism');
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119 //SASL/Auth features
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120 if (nodes.length > 0) {
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121 this.emit('mechanisms', stanza);
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122 var mechanisms = {};
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123 for (var i = 0; i < nodes.length; i++)
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124 mechanisms[nodes[i].textContent] = true;
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125
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126
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127 //FIXME support SCRAM-SHA1 && allow specify method preferences
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128 if ('DIGEST-MD5' in mechanisms)
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129 this.send(
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130 "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" +
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131 " mechanism='DIGEST-MD5'/>"
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132 );
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133 else if ('PLAIN' in mechanisms) {
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134 var token = btoa(
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135 this.jid +
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136 '\u0000' +
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137 this.jid.node +
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138 '\u0000' +
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139 this.password
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140 );
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141 this.send(
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142 "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" +
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143 " mechanism='PLAIN'>" + token + "</auth>"
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144 );
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145 }
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146 }
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147 //XMPP features
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148 else {
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149 this.emit('features', stanza);
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150 var that = this;
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151 //Bind http://xmpp.org/rfcs/rfc3920.html#bind
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152 var bind =
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153 "<iq type='set' id='"+Lightstring.newId('sendiq:')+"' xmlns='jabber:client'>" +
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154 "<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>" +
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155 (this.jid.resource? "<resource>" + this.jid.resource + "</resource>": "") +
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156 "</bind>" +
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157 "</iq>";
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158 this.send(
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159 bind,
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160 //Success
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161 function(stanza) {
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162 //Session http://xmpp.org/rfcs/rfc3921.html#session
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163 this.jid = new Lightstring.JID(stanza.DOM.textContent);
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164 that.send(
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165 "<iq type='set' id='"+Lightstring.newId('sendiq:')+"' xmlns='jabber:client'>" +
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166 "<session xmlns='urn:ietf:params:xml:ns:xmpp-session'/>" +
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167 "</iq>",
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168 function() {
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169 that.emit('connected');
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170 }
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171 );
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172 },
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173 //Error
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174 function(stanza) {
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175 //TODO: Error?
24
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176 }
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177 );
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178 }
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179 });
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180 this.on('success', function(stanza) {
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181 this.send(
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182 "<stream:stream to='" + this.jid.domain + "'" +
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183 " xmlns='jabber:client'" +
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184 " xmlns:stream='http://etherx.jabber.org/streams'" +
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185 " version='1.0'/>"
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186 );
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187 });
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188 this.on('failure', function(stanza) {
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189 this.emit('conn-error', stanza.DOM.firstChild.tagName);
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190 });
41
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191 this.on('challenge', function(stanza) {
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192 //FIXME this is mostly Strophe code
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193
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194 function _quote(str) {
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195 return '"' + str.replace(/\\/g, '\\\\').replace(/"/g, '\\"') + '"';
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196 };
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197
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198 var challenge = atob(stanza.DOM.textContent);
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199
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200 var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
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201
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202 var cnonce = MD5.hexdigest(Math.random() * 1234567890);
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203 var realm = '';
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204 var host = null;
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205 var nonce = '';
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206 var qop = '';
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207 var matches;
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208
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209 while (challenge.match(attribMatch)) {
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210 matches = challenge.match(attribMatch);
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211 challenge = challenge.replace(matches[0], '');
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212 matches[2] = matches[2].replace(/^"(.+)"$/, '$1');
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213 switch (matches[1]) {
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214 case 'realm':
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215 realm = matches[2];
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216 break;
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217 case 'nonce':
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218 nonce = matches[2];
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219 break;
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220 case 'qop':
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221 qop = matches[2];
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222 break;
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223 case 'host':
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224 host = matches[2];
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225 break;
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226 }
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227 }
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228
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229 var digest_uri = 'xmpp/' + this.jid.domain;
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230 if (host !== null)
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231 digest_uri = digest_uri + '/' + host;
41
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232 var A1 = MD5.hash(this.jid.node +
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233 ':' + realm + ':' + this.password) +
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234 ':' + nonce + ':' + cnonce;
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235 var A2 = 'AUTHENTICATE:' + digest_uri;
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236
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237 var responseText = '';
41
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238 responseText += 'username=' + _quote(this.jid.node) + ',';
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239 responseText += 'realm=' + _quote(realm) + ',';
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240 responseText += 'nonce=' + _quote(nonce) + ',';
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241 responseText += 'cnonce=' + _quote(cnonce) + ',';
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242 responseText += 'nc="00000001",';
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243 responseText += 'qop="auth",';
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244 responseText += 'digest-uri=' + _quote(digest_uri) + ',';
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245 responseText += 'response=' + _quote(
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246 MD5.hexdigest(MD5.hexdigest(A1) + ':' +
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247 nonce + ':00000001:' +
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248 cnonce + ':auth:' +
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249 MD5.hexdigest(A2))) + ',';
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250 responseText += 'charset="utf-8"';
41
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251 this.send(
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252 "<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" +
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253 btoa(responseText) +
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254 "</response>");
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255 });
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256 };
17
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257 Lightstring.Connection.prototype = {
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diff changeset
258 /**
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259 * @function Create and open a websocket then go though the XMPP authentification process.
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260 * @param {String} [aJid] The JID (Jabber id) to use.
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261 * @param {String} [aPassword] The associated password.
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262 */
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263 connect: function(aJid, aPassword) {
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264 this.emit('connecting');
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265 this.jid = new Lightstring.JID(aJid);
17
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diff changeset
266 if (aPassword)
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267 this.password = aPassword;
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268
22
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diff changeset
269 if (!this.jid.bare)
17
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diff changeset
270 throw 'Lightstring: Connection.jid is undefined.';
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diff changeset
271 if (!this.password)
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272 throw 'Lightstring: Connection.password is undefined.';
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diff changeset
273 if (!this.service)
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diff changeset
274 throw 'Lightstring: Connection.service is undefined.';
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275
40
e02bfcb78428 priority to WebSocket
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276 if(typeof(WebSocket) === "function") {
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277 this.socket = new WebSocket(this.service, 'xmpp');
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278 }
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279 else if(typeof(MozWebSocket) === "function") {
39
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280 this.socket = new MozWebSocket(this.service, 'xmpp');
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281 }
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282 else {
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283 throw new Error('WebSocket not available.');
17
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284 }
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285
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286 var that = this;
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287 this.socket.addEventListener('open', function() {
29
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288 //TODO: if (this.protocol !== 'xmpp')
17
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289
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290 var stream = Lightstring.stanzas.stream.open(that.jid.domain);
29
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291 //TODO: Use Lightstring.Connection.send (problem with parsing steam);
17
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292 that.socket.send(stream);
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293 var stanza = {
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294 XML: stream
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295 };
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296 that.emit('output', stanza);
17
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297 });
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298 this.socket.addEventListener('error', function(e) {
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299 that.emit('error', e.data);
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300 console.log(e.data);
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301 });
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302 this.socket.addEventListener('close', function(e) {
18
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303 that.emit('disconnected', e.data);
17
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304 });
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305 this.socket.addEventListener('message', function(e) {
29
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306 var stanza = new Lightstring.Stanza(e.data);
17
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307
29
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308 //TODO node-xmpp-bosh sends a self-closing stream:stream tag; it is wrong!
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309 that.emit('input', stanza);
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310
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311 if(!stanza.DOM)
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312 return;
57
91f18fdc0e2c Some clean up.
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313
29
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314 that.emit(stanza.DOM.tagName, stanza);
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315
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316 if (stanza.DOM.tagName === 'iq') {
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317 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
318 if (payload)
29
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319 that.emit('iq/' + payload.namespaceURI + ':' + payload.localName, stanza);
43
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diff changeset
320
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diff changeset
321 var id = stanza.DOM.getAttributeNS(null, 'id');
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diff changeset
322 if (!(id && id in that.callbacks))
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diff changeset
323 return;
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diff changeset
324
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325 var type = stanza.DOM.getAttributeNS(null, 'type');
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diff changeset
326 if (type !== 'result' && type !== 'error')
43
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diff changeset
327 return; //TODO: emit an warning, perhaps.
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diff changeset
328
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diff changeset
329 var callback = that.callbacks[id];
59
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diff changeset
330 if (type === 'result' && callback.success)
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diff changeset
331 callback.success(stanza);
43
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diff changeset
332 else if (type === 'error' && callback.error)
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diff changeset
333 callback.error(stanza);
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diff changeset
334
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diff changeset
335 delete that.callbacks[id];
41
2895891f19bb s/that/this/ in handlers.
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parents: 40
diff changeset
336
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diff changeset
337 //TODO: really needed?
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diff changeset
338 } else if (stanza.DOM.tagName === 'message') {
2895891f19bb s/that/this/ in handlers.
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diff changeset
339 var payloads = stanza.DOM.children;
2895891f19bb s/that/this/ in handlers.
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diff changeset
340 for (var i = 0; i < payloads.length; i++)
2895891f19bb s/that/this/ in handlers.
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diff changeset
341 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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diff changeset
342 }
17
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343 });
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parents: 16
diff changeset
344 },
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parents: 16
diff changeset
345 /**
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346 * @function Send a message.
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347 * @param {String|Object} aStanza The message to send.
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348 * @param {Function} [aCallback] Executed on answer. (stanza must be iq)
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diff changeset
349 */
59
bbcc6bbdac73 Make it works :-)
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diff changeset
350 send: function(aStanza, aSuccess, aError) {
29
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diff changeset
351 if (!(aStanza instanceof Lightstring.Stanza))
1e6d2ca2daae Adds a Lightstring.Stanza object and use it.
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diff changeset
352 var stanza = new Lightstring.Stanza(aStanza);
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diff changeset
353 else
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diff changeset
354 var stanza = aStanza;
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diff changeset
355
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diff changeset
356 if(!stanza)
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diff changeset
357 return;
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diff changeset
358
1e6d2ca2daae Adds a Lightstring.Stanza object and use it.
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parents: 28
diff changeset
359 if (stanza.DOM.tagName === 'iq') {
42
ee874d064650 Check iq sending.
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parents: 41
diff changeset
360 var type = stanza.DOM.getAttributeNS(null, 'type');
ee874d064650 Check iq sending.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 41
diff changeset
361 if (type !== 'get' || type !== 'set')
ee874d064650 Check iq sending.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 41
diff changeset
362 ; //TODO: emit an error.
ee874d064650 Check iq sending.
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parents: 41
diff changeset
363
59
bbcc6bbdac73 Make it works :-)
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parents: 57
diff changeset
364 var callback = {success: aSuccess, error: aError};
43
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
365
42
ee874d064650 Check iq sending.
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parents: 41
diff changeset
366 var id = stanza.DOM.getAttributeNS(null, 'id');
43
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parents: 42
diff changeset
367 if (!id)
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
368 ; //TODO: emit an warning.
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
369 else
59
bbcc6bbdac73 Make it works :-)
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parents: 57
diff changeset
370 this.callbacks[id] = callback;
43
136df1708856 Better iq callbacks. (breaks everything)
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parents: 42
diff changeset
371
59
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parents: 57
diff changeset
372 } else if (aSuccess || aError)
42
ee874d064650 Check iq sending.
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parents: 41
diff changeset
373 ; //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
374
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parents: 16
diff changeset
375
29
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diff changeset
376 //TODO this.socket.send(stanza.XML); (need some work on Lightstring.Stanza)
37
6773e5bc2ca0 several fixes
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parents: 34
diff changeset
377 var fixme = Lightstring.DOM2XML(stanza.DOM);
6773e5bc2ca0 several fixes
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parents: 34
diff changeset
378 stanza.XML = fixme;
6773e5bc2ca0 several fixes
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diff changeset
379 this.socket.send(fixme);
29
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diff changeset
380 this.emit('output', stanza);
17
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diff changeset
381 },
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parents: 16
diff changeset
382 /**
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parents: 16
diff changeset
383 * @function Closes the XMPP stream and the socket.
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parents: 16
diff changeset
384 */
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parents: 16
diff changeset
385 disconnect: function() {
18
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
386 this.emit('disconnecting');
44
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
387 var stream = Lightstring.stanzas.stream.close();
18
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
388 this.send(stream);
17
b7bd814333eb Move methods to the prototype.
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parents: 16
diff changeset
389 this.emit('XMLOutput', stream);
18
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
390 this.socket.close();
48bc65a0e0f1 add pubsub config
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parents: 17
diff changeset
391 },
44
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
392 load: function() {
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
393 for (var i = 0; i < arguments.length; i++) {
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
394 var name = arguments[i];
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
395 if (!(name in Lightstring.plugins))
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
396 continue; //TODO: throw an error?
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
397
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
398 var plugin = Lightstring.plugins[name];
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 43
diff changeset
399
56
1d4b844586f6 Bind methods so Lightstring.Connection.plugin.method works with the correct context.
Sonny Piers <sonny.piers@gmail.com>
parents: 55
diff changeset
400 //Namespaces
44
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
401 for (var ns in plugin.namespaces)
3dfb596cf669 Add a plugin loader.
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parents: 43
diff changeset
402 Lightstring.ns[ns] = plugin.namespaces[ns];
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 43
diff changeset
403
56
1d4b844586f6 Bind methods so Lightstring.Connection.plugin.method works with the correct context.
Sonny Piers <sonny.piers@gmail.com>
parents: 55
diff changeset
404 //Stanzas
54
0b7dd59e264a Fix Connection.load and add the init method to plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 51
diff changeset
405 Lightstring.stanzas[name] = {};
44
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 43
diff changeset
406 for (var stanza in plugin.stanzas)
51
63c1c8bc8c19 Add plugin namespaces to Lightstring.stanzas and Lightstring.Connection methodes.
Sonny Piers <sonny.piers@gmail.com>
parents: 50
diff changeset
407 Lightstring.stanzas[name][stanza] = plugin.stanzas[stanza];
44
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 43
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408
56
1d4b844586f6 Bind methods so Lightstring.Connection.plugin.method works with the correct context.
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parents: 55
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409 //Handlers
44
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410 for (var handler in plugin.handlers)
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411 this.on(handler, plugin.handlers[handler]);
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412
56
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Sonny Piers <sonny.piers@gmail.com>
parents: 55
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413 //Methods
57
91f18fdc0e2c Some clean up.
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414 this[name] = {};
56
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415 for (var method in plugins.methods)
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416 this[name][method].bind(this);
54
0b7dd59e264a Fix Connection.load and add the init method to plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 51
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417
0b7dd59e264a Fix Connection.load and add the init method to plugins.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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418 if (plugin.init)
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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419 plugin.init();
44
3dfb596cf669 Add a plugin loader.
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420 }
3dfb596cf669 Add a plugin loader.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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421 },
17
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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422 /**
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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423 * @function Emits an event.
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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424 * @param {String} aName The event name.
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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425 * @param {Function|Array|Object} [aData] Data about the event.
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Sonny Piers <sonny.piers@gmail.com>
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426 */
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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427 emit: function(aName, aData) {
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Sonny Piers <sonny.piers@gmail.com>
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428 var handlers = this.handlers[aName];
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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429 if (!handlers)
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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430 return;
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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431
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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432 for (var i = 0; i < handlers.length; i++)
41
2895891f19bb s/that/this/ in handlers.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 40
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433 handlers[i].call(this, aData);
17
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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434 },
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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435 /**
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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436 * @function Register an event handler.
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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437 * @param {String} aName The event name.
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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438 * @param {Function} aCallback The callback to call when the event is emitted.
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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439 */
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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440 on: function(aName, callback) {
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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441 if (!this.handlers[aName])
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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442 this.handlers[aName] = [];
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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443 this.handlers[aName].push(callback);
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Sonny Piers <sonny.piers@gmail.com>
parents: 16
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444 }
b7bd814333eb Move methods to the prototype.
Sonny Piers <sonny.piers@gmail.com>
parents: 16
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445 };