Mercurial > eldonilo > lightstring

comparison XMPP.js @ 0:96898e3812a5

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author Sonny Piers <sonny.piers@gmail.com>
date Sun, 18 Dec 2011 19:03:28 +0100
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-1:000000000000 0:96898e3812a5
1 'use strict';
2
3 var Lightstring = {
4 NS: {},
5 stanza: {},
6 };
7
8 Lightstring.Connection = function (aURL) {
9 var parser = new DOMParser();
10 var serializer = new XMLSerializer();
11 this.handlers = {};
12 this.iqid = 1024;
13 this.getNewId = function() {
14 this.iqid++;
15 return 'sendiq:'+this.iqid;
16 };
17 this.parse = function(str) {
18 return parser.parseFromString(str, 'text/xml').documentElement;
19 };
20 this.serialize = function(elm) {
21 return serializer.serializeToString(elm);
22 };
23 this.connect = function(jid, password) {
24 this.domain = jid.split('@')[1];
25 this.node = jid.split('@')[0];
26 this.jid = jid;
27 this.password = password;
28 if(typeof WebSocket === 'undefined')
29 this.socket = new MozWebSocket(aURL);
30 else
31 this.socket = new WebSocket(aURL);
32
33 var that = this;
34 this.socket.addEventListener('open', function() {
35 that.emit('open');
36 that.send("<stream:stream to='"+that.domain+"' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' />");
37 });
38 this.socket.addEventListener('error', function(err) {
39 that.emit('error');
40 });
41 this.socket.addEventListener('close', function(close) {
42 that.emit('close');
43 that.emit('disconnected');
44 });
45 this.socket.addEventListener('message', function(e) {
46 that.emit('XMLInput', e.data);
47 var elm = that.parse(e.data);
48 that.emit('DOMInput', elm);
49 that.emit(elm.tagName, elm);
50
51 if((elm.tagName === 'iq'))
52 that.emit(elm.getAttribute('id'), elm);
53 });
54 };
55
56
57
58 this.send = function(stanza, callback) {
59 //FIXME support for E4X
60 //~ if(typeof stanza === 'xml') {
61 //~ stanza = stanza.toXMLString();
62 //~ }
63 if(stanza.cnode) {
64 stanza = stanza.toString();
65 //~ console.log(typeof stanza);
66 }
67 if(typeof stanza === 'string') {
68 var str = stanza;
69 var elm = this.parse(stanza);
70 }
71 else {
72 var elm = stanza;
73 var str = this.serialize(stanza);
74 }
75
76
77 if(elm.tagName === 'iq') {
78 var id = elm.getAttribute('id');
79 if(!id) {
80 elm.setAttribute('id', this.getNewId())
81 str = this.serialize(elm)
82 }
83 if(callback) this.on(elm.getAttribute('id'), callback);
84 }
85
86
87 this.socket.send(str);
88 this.emit('XMLOutput', str);
89 this.emit('DOMOutput', elm);
90 };
91 this.disconnect = function() {
92 this.send('</stream:stream>');
93 this.emit('disconnected');
94 this.socket.close();
95 };
96 //FIXME Callbacks sucks, better idea?
97 this.emit = function(name, data) {
98 var handlers = this.handlers[name];
99 if(!handlers)
100 return;
101
102 //FIXME Better idea than passing the context as argument?
103 for(var i=0; i<handlers.length; i++)
104 handlers[i](data, this);
105
106 if(name.match('sendiq:'))
107 delete this.handlers[name];
108 };
109 this.on = function(name, callback) {
110 if(!this.handlers[name])
111 this.handlers[name] = [];
112 this.handlers[name].push(callback);
113 };
114 //FIXME do this!
115 this.once = function(name, callback) {
116 if(!this.handlers[name])
117 this.handlers[name] = [];
118 this.handlers[name].push(callback);
119 };
120 //Internal
121 this.on('stream:features', function(stanza, that) {
122 var nodes = stanza.querySelectorAll('mechanism');
123 //SASL/Auth features
124 if(nodes.length > 0) {
125 that.emit('mechanisms', stanza);
126 var mechanisms = {};
127 for(var i=0; i<nodes.length; i++)
128 mechanisms[nodes[i].textContent] = true;
129
130
131 //FIXME support SCRAM-SHA1 && allow specify method preferences
132 if('DIGEST-MD5' in mechanisms)
133 that.send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>");
134 else if('PLAIN' in mechanisms) {
135 var token = btoa(that.jid + "\u0000" + that.jid.split('@')[0] + "\u0000" + that.password);
136 that.send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>"+token+"</auth>");
137 }
138 }
139 //XMPP features
140 else {
141 that.emit('features', stanza);
142 //Bind http://xmpp.org/rfcs/rfc3920.html#bind
143 that.send("<iq type='set' xmlns='jabber:client'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/></iq>", function() {
144 //Session http://xmpp.org/rfcs/rfc3921.html#session
145 that.send("<iq type='set' xmlns='jabber:client'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>", function() {
146 that.emit('connected');
147 });
148 });
149 }
150 });
151 //Internal
152 this.on('success', function(stanza, that) {
153 that.send("<stream:stream to='"+that.domain+"' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' />");
154 });
155 //Internal
156 this.on('challenge', function(stanza, that) {
157 //FIXME this is mostly Strophe code
158
159 function _quote(str) {
160 return '"' + str.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
161 };
162
163 var challenge = atob(stanza.textContent);
164
165 var attribMatch = /([a-z]+)=("[^"]+"|[^,"]+)(?:,|$)/;
166
167 var cnonce = MD5.hexdigest(Math.random() * 1234567890);
168 var realm = "";
169 var host = null;
170 var nonce = "";
171 var qop = "";
172 var matches;
173
174 while (challenge.match(attribMatch)) {
175 matches = challenge.match(attribMatch);
176 challenge = challenge.replace(matches[0], "");
177 matches[2] = matches[2].replace(/^"(.+)"$/, "$1");
178 switch (matches[1]) {
179 case "realm":
180 realm = matches[2];
181 break;
182 case "nonce":
183 nonce = matches[2];
184 break;
185 case "qop":
186 qop = matches[2];
187 break;
188 case "host":
189 host = matches[2];
190 break;
191 }
192 }
193
194 var digest_uri = "xmpp/" + that.domain;
195 if (host !== null) {
196 digest_uri = digest_uri + "/" + host;
197 }
198
199 var A1 = MD5.hash(that.node +
200 ":" + realm + ":" + that.password) +
201 ":" + nonce + ":" + cnonce;
202 var A2 = 'AUTHENTICATE:' + digest_uri;
203
204 var responseText = "";
205 responseText += 'username=' + _quote(that.node) + ',';
206 responseText += 'realm=' + _quote(realm) + ',';
207 responseText += 'nonce=' + _quote(nonce) + ',';
208 responseText += 'cnonce=' + _quote(cnonce) + ',';
209 responseText += 'nc="00000001",';
210 responseText += 'qop="auth",';
211 responseText += 'digest-uri=' + _quote(digest_uri) + ',';
212 responseText += 'response=' + _quote(
213 MD5.hexdigest(MD5.hexdigest(A1) + ":" +
214 nonce + ":00000001:" +
215 cnonce + ":auth:" +
216 MD5.hexdigest(A2))) + ',';
217 responseText += 'charset="utf-8"';
218
219 that.send("<response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>"+btoa(responseText)+"</response>");
220 });
221 };