Mercurial > eldonilo > lightstring

annotate plugins/DIGEST-MD5.js @ 107:704ce44c1a22

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Add several properties to the Lightstring.Stanza object
author Sonny Piers <sonny@fastmail.net>
date Thu, 28 Jun 2012 12:51:04 +0200
parents e4899c122d7b
children
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1 'use strict';
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2
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3 /**
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4 Copyright (c) 2012, 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
66
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19 /*
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20 References:
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21 Extensible Messaging and Presence Protocol (XMPP): Core - SASL Negotiation
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22 http://xmpp.org/rfcs/rfc6120.html#sasl
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23 Simple Authentication and Security Layer (SASL)
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24 http://tools.ietf.org/html/rfc4422
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25 HTTP Authentication: Basic and Digest Access Authentication
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26 http://tools.ietf.org/html/rfc2617
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27 Using Digest Authentication as a SASL Mechanism
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28 http://tools.ietf.org/html/rfc2831
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29 */
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30
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31 Lightstring.plugins['DIGEST-MD5'] = {
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32 handlers: {
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33 'mechanisms': function (stanza) {
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34 if(stanza.mechanisms.indexOf('DIGEST-MD5') === -1)
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35 return;
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36
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37 this.send(
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38 "<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl'" +
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39 " mechanism='DIGEST-MD5'/>"
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40 );
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41 },
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42 'success': function (stanza) {
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43 this.send(
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44 "<stream:stream to='" + this.jid.domain + "'" +
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45 " xmlns='jabber:client'" +
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46 " xmlns:stream='http://etherx.jabber.org/streams'" +
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47 " version='1.0'/>"
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48 );
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49 },
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50 'features': function (stanza) {
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51 var Conn = this;
64
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52 //TODO check if bind supported
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53 var bind =
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54 "<iq type='set' id='"+Lightstring.newId('sendiq:')+"'>" +
64
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55 "<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'>" +
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56 (this.jid.resource? "<resource>" + this.jid.resource + "</resource>": "") +
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57 "</bind>" +
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58 "</iq>";
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59 this.send(
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60 bind,
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61 //Success
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62 function(stanza) {
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63 //Session http://xmpp.org/rfcs/rfc3921.html#session
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64 Conn.jid = new Lightstring.JID(stanza.DOM.textContent);
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65 Conn.send(
65
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66 "<iq type='set' id='"+Lightstring.newId('sendiq:')+"'>" +
64
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67 "<session xmlns='urn:ietf:params:xml:ns:xmpp-session'/>" +
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68 "</iq>",
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69 function() {
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70 Conn.emit('connected');
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71 }
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72 );
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73 },
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74 //Error
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75 function(stanza) {
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76 //TODO: Error?
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77 }
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78 );
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79 },
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80 'challenge': function (stanza) {
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81 //FIXME: this is Strophe.js code
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82
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83 function _quote(str) {
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84 return '"' + str.replace(/\\/g, '\\\\').replace(/"/g, '\\"') + '"';
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85 };
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86
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87 var challenge = atob(stanza.DOM.textContent);
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88
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89 var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
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90
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91 var cnonce = MD5.hexdigest(Math.random() * 1234567890);
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92 var realm = '';
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93 var host = null;
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94 var nonce = '';
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95 var qop = '';
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96 var matches;
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97
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98 while (challenge.match(attribMatch)) {
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99 matches = challenge.match(attribMatch);
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100 challenge = challenge.replace(matches[0], '');
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101 matches[2] = matches[2].replace(/^"(.+)"$/, '$1');
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102 switch (matches[1]) {
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103 case 'realm':
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104 realm = matches[2];
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105 break;
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106 case 'nonce':
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107 nonce = matches[2];
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108 break;
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109 case 'qop':
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110 qop = matches[2];
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111 break;
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112 case 'host':
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113 host = matches[2];
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114 break;
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115 }
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116 }
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117
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118 var digest_uri = 'xmpp/' + this.jid.domain;
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119 if (host !== null)
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120 digest_uri = digest_uri + '/' + host;
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121 var A1 = MD5.hash(this.jid.node +
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122 ':' + realm + ':' + this.password) +
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123 ':' + nonce + ':' + cnonce;
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124 var A2 = 'AUTHENTICATE:' + digest_uri;
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125
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126 var responseText = '';
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127 responseText += 'username=' + _quote(this.jid.node) + ',';
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128 responseText += 'realm=' + _quote(realm) + ',';
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129 responseText += 'nonce=' + _quote(nonce) + ',';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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130 responseText += 'cnonce=' + _quote(cnonce) + ',';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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131 responseText += 'nc="00000001",';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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132 responseText += 'qop="auth",';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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133 responseText += 'digest-uri=' + _quote(digest_uri) + ',';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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134 responseText += 'response=' + _quote(
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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135 MD5.hexdigest(MD5.hexdigest(A1) + ':' +
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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136 nonce + ':00000001:' +
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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137 cnonce + ':auth:' +
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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138 MD5.hexdigest(A2))) + ',';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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139 responseText += 'charset="utf-8"';
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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140 this.send(
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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141 "<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>" +
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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142 btoa(responseText) +
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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143 "</response>");
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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144 },
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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145 'failure': function (stanza) {
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
Sonny Piers <sonny.piers@gmail.com>
parents:
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146 //TODO: throw an error?
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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147 }
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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148 }
d9f5ae0b6d98 Support for DIGEST-MD5 authentication. (plugin)
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parents:
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149 };