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annotate lightstring.js @ 1:96087680669f

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Delete base64.js since I don't care about IE support for the moment.
author Sonny Piers <sonny.piers@gmail.com>
date Sun, 18 Dec 2011 20:26:33 +0100
parents
children f31a75c3b6c8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1
96087680669f Delete base64.js since I don't care about IE support for the moment.
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1 'use strict';
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2
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3 var Lightstring = {
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4 NS: {},
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5 stanza: {},
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6 };
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7
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8 Lightstring.Connection = function (aURL) {
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9 var parser = new DOMParser();
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10 var serializer = new XMLSerializer();
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11 this.handlers = {};
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12 this.iqid = 1024;
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13 this.getNewId = function() {
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14 this.iqid++;
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15 return 'sendiq:'+this.iqid;
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16 };
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17 this.parse = function(str) {
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18 return parser.parseFromString(str, 'text/xml').documentElement;
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19 };
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20 this.serialize = function(elm) {
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21 return serializer.serializeToString(elm);
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22 };
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23 this.connect = function(jid, password) {
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24 this.domain = jid.split('@')[1];
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25 this.node = jid.split('@')[0];
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26 this.jid = jid;
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27 this.password = password;
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28 if(typeof WebSocket === 'undefined')
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29 this.socket = new MozWebSocket(aURL);
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30 else
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31 this.socket = new WebSocket(aURL);
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32
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33 var that = this;
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34 this.socket.addEventListener('open', function() {
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35 that.emit('open');
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36 that.send("<stream:stream to='"+that.domain+"' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' />");
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37 });
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38 this.socket.addEventListener('error', function(err) {
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39 that.emit('error');
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40 });
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41 this.socket.addEventListener('close', function(close) {
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42 that.emit('close');
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43 that.emit('disconnected');
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44 });
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45 this.socket.addEventListener('message', function(e) {
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46 that.emit('XMLInput', e.data);
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47 var elm = that.parse(e.data);
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48 that.emit('DOMInput', elm);
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49 that.emit(elm.tagName, elm);
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50
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51 if((elm.tagName === 'iq'))
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52 that.emit(elm.getAttribute('id'), elm);
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53 });
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54 };
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55
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56
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57
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58 this.send = function(stanza, callback) {
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59 //FIXME support for E4X
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60 //~ if(typeof stanza === 'xml') {
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61 //~ stanza = stanza.toXMLString();
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62 //~ }
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63 if(stanza.cnode) {
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64 stanza = stanza.toString();
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65 //~ console.log(typeof stanza);
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66 }
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67 if(typeof stanza === 'string') {
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68 var str = stanza;
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69 var elm = this.parse(stanza);
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70 }
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71 else {
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72 var elm = stanza;
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73 var str = this.serialize(stanza);
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74 }
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75
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76
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77 if(elm.tagName === 'iq') {
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78 var id = elm.getAttribute('id');
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79 if(!id) {
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80 elm.setAttribute('id', this.getNewId())
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81 str = this.serialize(elm)
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82 }
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83 if(callback) this.on(elm.getAttribute('id'), callback);
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84 }
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85
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86
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87 this.socket.send(str);
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88 this.emit('XMLOutput', str);
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89 this.emit('DOMOutput', elm);
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90 };
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91 this.disconnect = function() {
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92 this.send('</stream:stream>');
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93 this.emit('disconnected');
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94 this.socket.close();
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95 };
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96 //FIXME Callbacks sucks, better idea?
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97 this.emit = function(name, data) {
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98 var handlers = this.handlers[name];
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99 if(!handlers)
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100 return;
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101
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102 //FIXME Better idea than passing the context as argument?
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103 for(var i=0; i<handlers.length; i++)
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104 handlers[i](data, this);
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105
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106 if(name.match('sendiq:'))
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107 delete this.handlers[name];
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108 };
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109 this.on = function(name, callback) {
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110 if(!this.handlers[name])
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111 this.handlers[name] = [];
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112 this.handlers[name].push(callback);
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113 };
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114 //FIXME do this!
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115 this.once = function(name, callback) {
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116 if(!this.handlers[name])
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117 this.handlers[name] = [];
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118 this.handlers[name].push(callback);
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119 };
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120 //Internal
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121 this.on('stream:features', function(stanza, that) {
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122 var nodes = stanza.querySelectorAll('mechanism');
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123 //SASL/Auth features
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124 if(nodes.length > 0) {
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125 that.emit('mechanisms', stanza);
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126 var mechanisms = {};
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127 for(var i=0; i<nodes.length; i++)
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128 mechanisms[nodes[i].textContent] = true;
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129
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130
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131 //FIXME support SCRAM-SHA1 && allow specify method preferences
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132 if('DIGEST-MD5' in mechanisms)
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133 that.send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>");
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134 else if('PLAIN' in mechanisms) {
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135 var token = btoa(that.jid + "\u0000" + that.jid.split('@')[0] + "\u0000" + that.password);
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136 that.send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>"+token+"</auth>");
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137 }
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138 }
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Sonny Piers <sonny.piers@gmail.com>
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139 //XMPP features
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140 else {
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141 that.emit('features', stanza);
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142 //Bind http://xmpp.org/rfcs/rfc3920.html#bind
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143 that.send("<iq type='set' xmlns='jabber:client'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/></iq>", function() {
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144 //Session http://xmpp.org/rfcs/rfc3921.html#session
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145 that.send("<iq type='set' xmlns='jabber:client'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>", function() {
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146 that.emit('connected');
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147 });
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148 });
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149 }
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150 });
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Sonny Piers <sonny.piers@gmail.com>
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151 //Internal
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152 this.on('success', function(stanza, that) {
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153 that.send("<stream:stream to='"+that.domain+"' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' />");
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154 });
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Sonny Piers <sonny.piers@gmail.com>
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155 //Internal
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Sonny Piers <sonny.piers@gmail.com>
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156 this.on('challenge', function(stanza, that) {
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157 //FIXME this is mostly Strophe code
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158
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159 function _quote(str) {
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160 return '"' + str.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
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161 };
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162
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163 var challenge = atob(stanza.textContent);
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164
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165 var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
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166
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167 var cnonce = MD5.hexdigest(Math.random() * 1234567890);
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168 var realm = "";
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169 var host = null;
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170 var nonce = "";
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Sonny Piers <sonny.piers@gmail.com>
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171 var qop = "";
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Sonny Piers <sonny.piers@gmail.com>
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172 var matches;
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173
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Sonny Piers <sonny.piers@gmail.com>
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174 while (challenge.match(attribMatch)) {
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175 matches = challenge.match(attribMatch);
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176 challenge = challenge.replace(matches[0], "");
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177 matches[2] = matches[2].replace(/^"(.+)"$/, "$1");
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178 switch (matches[1]) {
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179 case "realm":
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180 realm = matches[2];
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181 break;
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182 case "nonce":
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183 nonce = matches[2];
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184 break;
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185 case "qop":
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186 qop = matches[2];
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187 break;
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188 case "host":
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189 host = matches[2];
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190 break;
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191 }
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192 }
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193
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194 var digest_uri = "xmpp/" + that.domain;
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195 if (host !== null) {
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196 digest_uri = digest_uri + "/" + host;
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197 }
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198
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199 var A1 = MD5.hash(that.node +
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200 ":" + realm + ":" + that.password) +
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201 ":" + nonce + ":" + cnonce;
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202 var A2 = 'AUTHENTICATE:' + digest_uri;
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203
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204 var responseText = "";
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205 responseText += 'username=' + _quote(that.node) + ',';
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206 responseText += 'realm=' + _quote(realm) + ',';
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207 responseText += 'nonce=' + _quote(nonce) + ',';
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208 responseText += 'cnonce=' + _quote(cnonce) + ',';
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Sonny Piers <sonny.piers@gmail.com>
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209 responseText += 'nc="00000001",';
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Sonny Piers <sonny.piers@gmail.com>
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210 responseText += 'qop="auth",';
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211 responseText += 'digest-uri=' + _quote(digest_uri) + ',';
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Sonny Piers <sonny.piers@gmail.com>
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212 responseText += 'response=' + _quote(
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213 MD5.hexdigest(MD5.hexdigest(A1) + ":" +
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Sonny Piers <sonny.piers@gmail.com>
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214 nonce + ":00000001:" +
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Sonny Piers <sonny.piers@gmail.com>
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215 cnonce + ":auth:" +
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216 MD5.hexdigest(A2))) + ',';
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217 responseText += 'charset="utf-8"';
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218
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219 that.send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>"+btoa(responseText)+"</response>");
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220 });
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221 };