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Initial commit, hello world!

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commit bbf71762c1fe01418de5ad25f093a14059eb4c4b 0 parents
Matthew Wild authored
Showing with 527 additions and 0 deletions.
  1. +208 −0 sha1.js
  2. +319 −0 xmpp.js
208 sha1.js
@@ -0,0 +1,208 @@
+/*
+ * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
+ * in FIPS PUB 180-1
+ * Version 2.1a Copyright Paul Johnston 2000 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Modifications by Matthew Wild to export functions for CommonJS
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for details.
+ */
+
+/*
+ * Configurable variables. You may need to tweak these to be compatible with
+ * the server-side, but the defaults work in most cases.
+ */
+var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
+var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
+var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
+
+/*
+ * These are the functions you'll usually want to call
+ * They take string arguments and return either hex or base-64 encoded strings
+ */
+exports.hex = function (s){return binb2hex(core_sha1(str2binb(s),s.length * chrsz));}
+exports.b64 = function (s){return binb2b64(core_sha1(str2binb(s),s.length * chrsz));}
+exports.str = function (s){return binb2str(core_sha1(str2binb(s),s.length * chrsz));}
+exports.hex_hmac = function (key, data){ return binb2hex(core_hmac_sha1(key, data));}
+exports.b64_hmac = function (key, data){ return binb2b64(core_hmac_sha1(key, data));}
+exports.str_hmac = function (key, data){ return binb2str(core_hmac_sha1(key, data));}
+
+/*
+ * Perform a simple self-test to see if the VM is working
+ */
+function sha1_vm_test()
+{
+ return hex_sha1("abc") == "a9993e364706816aba3e25717850c26c9cd0d89d";
+}
+
+/*
+ * Calculate the SHA-1 of an array of big-endian words, and a bit length
+ */
+function core_sha1(x, len)
+{
+ /* append padding */
+ x[len >> 5] |= 0x80 << (24 - len % 32);
+ x[((len + 64 >> 9) << 4) + 15] = len;
+
+ var w = new Array(80);
+ var a = 1732584193;
+ var b = -271733879;
+ var c = -1732584194;
+ var d = 271733878;
+ var e = -1009589776;
+
+ var i, j, t, olda, oldb, oldc, oldd, olde;
+ for (i = 0; i < x.length; i += 16)
+ {
+ olda = a;
+ oldb = b;
+ oldc = c;
+ oldd = d;
+ olde = e;
+
+ for (j = 0; j < 80; j++)
+ {
+ if (j < 16) { w[j] = x[i + j]; }
+ else { w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1); }
+ t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)),
+ safe_add(safe_add(e, w[j]), sha1_kt(j)));
+ e = d;
+ d = c;
+ c = rol(b, 30);
+ b = a;
+ a = t;
+ }
+
+ a = safe_add(a, olda);
+ b = safe_add(b, oldb);
+ c = safe_add(c, oldc);
+ d = safe_add(d, oldd);
+ e = safe_add(e, olde);
+ }
+ return [a, b, c, d, e];
+}
+
+/*
+ * Perform the appropriate triplet combination function for the current
+ * iteration
+ */
+function sha1_ft(t, b, c, d)
+{
+ if (t < 20) { return (b & c) | ((~b) & d); }
+ if (t < 40) { return b ^ c ^ d; }
+ if (t < 60) { return (b & c) | (b & d) | (c & d); }
+ return b ^ c ^ d;
+}
+
+/*
+ * Determine the appropriate additive constant for the current iteration
+ */
+function sha1_kt(t)
+{
+ return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 :
+ (t < 60) ? -1894007588 : -899497514;
+}
+
+/*
+ * Calculate the HMAC-SHA1 of a key and some data
+ */
+function core_hmac_sha1(key, data)
+{
+ var bkey = str2binb(key);
+ if (bkey.length > 16) { bkey = core_sha1(bkey, key.length * chrsz); }
+
+ var ipad = new Array(16), opad = new Array(16);
+ for (var i = 0; i < 16; i++)
+ {
+ ipad[i] = bkey[i] ^ 0x36363636;
+ opad[i] = bkey[i] ^ 0x5C5C5C5C;
+ }
+
+ var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * chrsz);
+ return core_sha1(opad.concat(hash), 512 + 160);
+}
+
+/*
+ * Add integers, wrapping at 2^32. This uses 16-bit operations internally
+ * to work around bugs in some JS interpreters.
+ */
+function safe_add(x, y)
+{
+ var lsw = (x & 0xFFFF) + (y & 0xFFFF);
+ var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
+ return (msw << 16) | (lsw & 0xFFFF);
+}
+
+/*
+ * Bitwise rotate a 32-bit number to the left.
+ */
+function rol(num, cnt)
+{
+ return (num << cnt) | (num >>> (32 - cnt));
+}
+
+/*
+ * Convert an 8-bit or 16-bit string to an array of big-endian words
+ * In 8-bit function, characters >255 have their hi-byte silently ignored.
+ */
+function str2binb(str)
+{
+ var bin = [];
+ var mask = (1 << chrsz) - 1;
+ for (var i = 0; i < str.length * chrsz; i += chrsz)
+ {
+ bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (32 - chrsz - i%32);
+ }
+ return bin;
+}
+
+/*
+ * Convert an array of big-endian words to a string
+ */
+function binb2str(bin)
+{
+ var str = "";
+ var mask = (1 << chrsz) - 1;
+ for (var i = 0; i < bin.length * 32; i += chrsz)
+ {
+ str += String.fromCharCode((bin[i>>5] >>> (32 - chrsz - i%32)) & mask);
+ }
+ return str;
+}
+
+/*
+ * Convert an array of big-endian words to a hex string.
+ */
+function binb2hex(binarray)
+{
+ var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
+ var str = "";
+ for (var i = 0; i < binarray.length * 4; i++)
+ {
+ str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) +
+ hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8 )) & 0xF);
+ }
+ return str;
+}
+
+/*
+ * Convert an array of big-endian words to a base-64 string
+ */
+function binb2b64(binarray)
+{
+ var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+ var str = "";
+ var triplet, j;
+ for (var i = 0; i < binarray.length * 4; i += 3)
+ {
+ triplet = (((binarray[i >> 2] >> 8 * (3 - i %4)) & 0xFF) << 16) |
+ (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 ) |
+ ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF);
+ for (j = 0; j < 4; j++)
+ {
+ if (i * 8 + j * 6 > binarray.length * 32) { str += b64pad; }
+ else { str += tab.charAt((triplet >> 6*(3-j)) & 0x3F); }
+ }
+ }
+ return str;
+}
319 xmpp.js
@@ -0,0 +1,319 @@
+// Node libs
+var tcp = require("tcp");
+
+// External libs
+var xml = require("./node-xml");
+var sha1 = require("./sha1");
+
+// This lib
+var xmpp = exports;
+
+// Wraps a function so that its 'this' is always 'context' when called
+var recontext = function (context, f) { return function () { return f.apply(context, arguments); }; };
+
+xmpp.xmlns = {
+ streams: "http://etherx.jabber.org/streams",
+ component_accept: "jabber:component:accept"
+};
+
+xmpp.Status = {
+ ERROR: 0,
+ CONNECTING: 1,
+ CONNFAIL: 2,
+ AUTHENTICATING: 3,
+ AUTHFAIL: 4,
+ CONNECTED: 5,
+ DISCONNECTED: 6,
+ DISCONNECTING: 7,
+};
+
+xmpp.LogLevel = {
+ DEBUG: 0,
+ INFO: 1,
+ WARN: 2,
+ ERROR: 3,
+ FATAL: 4
+};
+/** XMPPStream: Takes a parser, eats bytes, fires callbacks on stream events **/
+xmpp.Stream = function (callbacks)
+{
+ this.callbacks = callbacks;
+ var stream = this;
+ var stanza;
+ this.parser = new xml.SaxParser(function (cb)
+ {
+ cb.onStartElementNS(function (tagname, attr_arr, prefix, uri, namespaces)
+ {
+ var attr = {xmlns:uri};
+ for(var i=0;i<attr_arr.length;i++)
+ attr[attr_arr[i][0]] = attr_arr[i][1];
+ for(var i=0;i<namespaces.length;i++)
+ if(namespaces[i][0].length > 0)
+ attr["xmlns:"+namespaces[i][0]] = namespaces[i][1];
+ if(!stanza)
+ {
+ if(stream.opened)
+ stanza = xmpp.stanza(tagname, attr);
+ else if(tagname == "stream" && uri == xmpp.xmlns.streams)
+ {
+ stream.opened = true;
+ callbacks.opened(attr);
+ }
+ else
+ {
+ callbacks.error("no-stream");
+ }
+ }
+ else
+ {
+ stanza.c(tagname, attr);
+ }
+
+ });
+
+ cb.onEndElementNS(function(tagname) {
+ if(stanza)
+ if(stanza.last_node.length == 1)
+ {
+ callbacks.stanza(stanza);
+ stanza = null;
+ }
+ else
+ stanza.up();
+ else
+ {
+ stream.opened = false;
+ callbacks.closed();
+ }
+ });
+
+ cb.onCharacters(function(chars) {
+ if(stanza)
+ stanza.t(chars);
+ });
+ });
+
+ this.data = function (data)
+ {
+ return this.parser.parseString(data);
+ }
+
+ return this;
+};
+
+
+/** Connection: Takes host/port, manages stream **/
+xmpp.Connection = function (host, port)
+{
+ this.host = host || "localhost";
+ this.port = port || 5347;
+
+ this.socket = tcp.createConnection();
+
+ this.stream = new xmpp.Stream({
+ opened: recontext(this, this._stream_opened),
+ stanza: recontext(this, this._handle_stanza),
+ closed: recontext(this, this._stream_closed)
+ });
+
+ return this;
+};
+
+exports.Connection.prototype = {
+ connect: function (jid, pass, callback)
+ {
+ this.jid = jid;
+ this.password = pass;
+ this.connect_callback = callback;
+
+ var conn = this;
+ this.socket.addListener("connect", recontext(this, conn._socket_connected));
+ this.socket.addListener("disconnect", recontext(this, conn._socket_disconnected));
+ this.socket.addListener("receive", recontext(this, conn._socket_received));
+
+ // Connect TCP socket
+ this.socket.connect(this.port, this.host);
+
+ this._setStatus(xmpp.Status.CONNECTING);
+ },
+
+ send: function (data)
+ {
+ this.debug("SND: "+data);
+ this.socket.send(data.toString());
+ },
+
+ // Update the status of the connection, call connect_callback
+ _setStatus: function (status, condition)
+ {
+ this.status = status;
+ this.connect_callback(status, condition);
+ },
+
+ // Socket listeners, called on TCP-level events
+ _socket_connected: function ()
+ {
+ this.info("CONNECTED.");
+ this.send("<stream:stream xmlns='jabber:component:accept' xmlns:stream='http://etherx.jabber.org/streams' to='"+this.jid+"'>");
+ },
+
+ _socket_disconnected: function (had_error)
+ {
+ if(this.status == xmpp.Status.CONNECTING)
+ this._setStatus(xmpp.Status.CONNFAIL);
+ elseif(this.status == xmpp.Status.CONNECTED)
+ this._setStatus(xmpp.Status.DISCONNECTED);
+ this.info("DISCONNECTED.");
+ },
+
+ _socket_received: function (data)
+ {
+ this.debug("RCV: "+data);
+ // Push to parser
+ this.stream.data(data);
+ },
+
+ // Stream listeners, called on XMPP-level events
+ _stream_opened: function (attr)
+ {
+ this.debug("STREAM: opened.");
+ this._setStatus(xmpp.Status.AUTHENTICATING);
+ var handshake = sha1.hex(attr.id + this.password);
+ this.debug("Sending authentication token...");
+ this.send("<handshake>"+handshake+"</handshake>");
+ },
+
+ _handle_stanza: function (stanza)
+ {
+ if(stanza.attr.xmlns == xmpp.xmlns.component_accept)
+ {
+ if(stanza.name == "handshake")
+ {
+ this._setStatus(xmpp.Status.CONNECTED);
+ }
+ }
+ this.debug("STANZA: "+stanza.toString());
+ },
+
+ _stream_closed: function ()
+ {
+ this.debug("STREAM: closed.");
+ this.socket.close();
+ if(this.status == xmpp.Status.CONNECTING)
+ this._setStatus(xmpp.status.CONNFAIL);
+ else
+ this._setStatus(xmpp.Status.DISCONNECTED);
+ },
+
+ _stream_error: function (condition)
+ {
+ this._setStatus(xmpp.Status.ERROR, condition);
+ },
+
+ // Logging
+ log: function (level, message) {},
+ debug: function (message) { return this.log(xmpp.LogLevel.DEBUG, message); },
+ info: function (message) { return this.log(xmpp.LogLevel.INFO , message); },
+ warn: function (message) { return this.log(xmpp.LogLevel.WARN , message); },
+ error: function (message) { return this.log(xmpp.LogLevel.ERROR, message); },
+ fatal: function (message) { return this.log(xmpp.LogLevel.FATAL, message); }
+
+};
+
+function xmlescape(s)
+{
+ return s.replace(/&/g, "&amp;")
+ .replace(/</g, "&lt;")
+ .replace(/>/g, "&gt;")
+ .replace(/\"/g, "&quot;");
+}
+
+/** StanzaBuilder: Helps create and manipulate XML snippets **/
+xmpp.StanzaBuilder = function (name, attr)
+{
+ this.name = name;
+ this.attr = attr || {};
+ this.tags = [];
+ this.children = [];
+ this.last_node = [this];
+ return this;
+};
+
+xmpp.StanzaBuilder.prototype = {
+ c: function (name, attr)
+ {
+ var s = new xmpp.StanzaBuilder(name, attr);
+ var parent = this.last_node[this.last_node.length-1];
+ parent.tags.push(s);
+ parent.children.push(s);
+ this.last_node.push(s);
+ return this;
+ },
+
+ t: function (text)
+ {
+ var parent = this.last_node[this.last_node.length-1];
+ parent.children.push(text);
+ return this;
+ },
+
+ up: function ()
+ {
+ this.last_node.pop();
+ return this;
+ },
+
+ toString: function (top_tag_only)
+ {
+ var buf = [];
+ buf.push("<" + this.name);
+ for(var attr in this.attr)
+ {
+ buf.push(" " + attr + "='" + xmlescape(this.attr[attr]) + "'");
+ }
+
+ // Now add children if wanted
+ if(top_tag_only)
+ {
+ buf.push(">");
+ }
+ else if(this.children.length == 0)
+ {
+ buf.push("/>");
+ }
+ else
+ {
+ buf.push(">");
+ for(var i = 0; i<this.children.length; i++)
+ {
+ var child = this.children[i];
+ if(typeof(child) == "string")
+ buf.push(xmlescape(child));
+ else
+ buf.push(child.toString());
+ }
+ buf.push("</" + this.name + ">");
+ }
+ return buf.join("");
+ }
+}
+
+xmpp.stanza = function (name, attr)
+{
+ return new xmpp.StanzaBuilder(name, attr);
+}
+
+xmpp.message = function (attr)
+{
+ return xmpp.stanza("message", attr);
+}
+
+xmpp.presence = function (attr)
+{
+ return xmpp.stanza("presence", attr);
+}
+
+xmpp.iq = function (attr)
+{
+ return xmpp.stanza("iq", attr);
+}
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