From b60df56157ee1fd0bd4938799bac05a62fda91a1 Mon Sep 17 00:00:00 2001
From: lookshe <github@lookshe.org>
Date: Sat, 14 Mar 2015 20:45:20 +0100
Subject: initial commit from working version

---
 .../flash-src/com/hurlant/crypto/tls/TLSEngine.as  | 895 +++++++++++++++++++++
 1 file changed, 895 insertions(+)
 create mode 100644 signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tls/TLSEngine.as

(limited to 'signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tls/TLSEngine.as')

diff --git a/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tls/TLSEngine.as b/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tls/TLSEngine.as
new file mode 100644
index 0000000..72f3941
--- /dev/null
+++ b/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/com/hurlant/crypto/tls/TLSEngine.as
@@ -0,0 +1,895 @@
+/**
+ * TLSEngine
+ * 
+ * A TLS protocol implementation.
+ * See comment below for some details.
+ * Copyright (c) 2007 Henri Torgemane
+ * 
+ * Patched(heavily) by Bobby Parker (shortwave@gmail.com)
+ * 
+ * See LICENSE.txt for full license information.
+ */
+package com.hurlant.crypto.tls {
+	import com.hurlant.crypto.cert.X509Certificate;
+	import com.hurlant.crypto.cert.X509CertificateCollection;
+	import com.hurlant.crypto.prng.Random;
+	import com.hurlant.util.ArrayUtil;
+	import com.hurlant.util.Hex;
+	
+	import flash.events.Event;
+	import flash.events.EventDispatcher;
+	import flash.events.ProgressEvent;
+	import flash.utils.ByteArray;
+	import flash.utils.IDataInput;
+	import flash.utils.IDataOutput;
+	import flash.utils.clearTimeout;
+	import flash.utils.setTimeout;
+	import com.hurlant.crypto.prng.ARC4;
+
+
+	[Event(name="close", type="flash.events.Event")]
+	[Event(name="socketData", type="flash.events.ProgressEvent")]
+	[Event(name="ready", type="com.hurlant.crypto.tls.TLSEvent")]
+	[Event(name="data", type="com.hurlant.crypto.tls.TLSEvent")]
+	
+	/**
+	 * The heart of the TLS protocol.
+	 * This class can work in server or client mode.
+	 * 
+	 * This doesn't fully implement the TLS protocol.
+	 * 
+	 * Things missing that I'd like to add:
+	 * - support for client-side certificates
+	 * - general code clean-up to make sure we don't have gaping securite holes
+	 * 
+	 * Things that aren't there that I won't add:
+	 * - support for "export" cypher suites (deprecated in later TLS versions)
+	 * - support for "anon" cypher suites (deprecated in later TLS versions)
+	 * 
+	 * Things that I'm unsure about adding later:
+	 * - compression. Compressing encrypted streams is barely worth the CPU cycles.
+	 * - diffie-hellman based key exchange mechanisms. Nifty, but would we miss it?
+	 * 
+	 * @author henri
+	 * 
+	 */
+	public class TLSEngine extends EventDispatcher {
+		
+		public static const SERVER:uint = 0;
+		public static const CLIENT:uint = 1;
+		public var protocol_version:uint;
+
+
+	
+		private static const PROTOCOL_HANDSHAKE:uint = 22;
+		private static const PROTOCOL_ALERT:uint = 21;
+		private static const PROTOCOL_CHANGE_CIPHER_SPEC:uint = 20;
+		private static const PROTOCOL_APPLICATION_DATA:uint = 23;
+
+
+		private static const STATE_NEW:uint = 0; // brand new. nothing happened yet
+		private static const STATE_NEGOTIATING:uint = 1; // we're figuring out what to use
+		private static const STATE_READY:uint = 2; // we're ready for AppData stuff to go over us.
+		private static const STATE_CLOSED:uint = 3; // we're done done.
+		
+		private var _entity:uint; // SERVER | CLIENT
+		private var _config:TLSConfig;
+		
+		private var _state:uint;
+		
+		private var _securityParameters:ISecurityParameters;
+		
+		private var _currentReadState:IConnectionState;
+		private var _currentWriteState:IConnectionState;
+		private var _pendingReadState:IConnectionState;
+		private var _pendingWriteState:IConnectionState;
+		
+		private var _handshakePayloads:ByteArray;
+		private var _handshakeRecords:ByteArray; // For client-side certificate verify 
+		
+		private var _iStream:IDataInput;
+		private var _oStream:IDataOutput;
+		
+		// temporary store for X509 certs received by this engine.
+		private var _store:X509CertificateCollection;
+		// the main certificate received from the other side.
+		private var _otherCertificate:X509Certificate;
+		
+		public function get peerCertificate() : X509Certificate {
+			return _otherCertificate;
+		}
+		// If this isn't null, we expect this identity to be found in the Cert's Subject CN.
+		private var _otherIdentity:String;
+		
+		// The client-side cert
+		private var _myCertficate:X509Certificate;
+		// My Identity
+		private var _myIdentity:String;
+		
+		/**
+		 * 
+		 * @param config		A TLSConfig instance describing how we're supposed to work
+		 * @param iStream		An input stream to read TLS data from
+		 * @param oStream		An output stream to write TLS data to
+		 * @param otherIdentity	An optional identifier. If set, this will be checked against the Subject CN of the other side's certificate.
+		 * 
+		 */
+		function TLSEngine(config:TLSConfig, iStream:IDataInput, oStream:IDataOutput, otherIdentity:String = null) {
+			_entity = config.entity;
+			_config = config;
+			_iStream = iStream;
+			_oStream = oStream;
+			_otherIdentity = otherIdentity;
+			
+			_state = STATE_NEW;
+			
+			// Pick the right set of callbacks
+			_entityHandshakeHandlers = _entity == CLIENT ? handshakeHandlersClient : handshakeHandlersServer;
+			
+			// setting up new security parameters needs to be controlled by...something.
+			if (_config.version == SSLSecurityParameters.PROTOCOL_VERSION) {
+				_securityParameters = new SSLSecurityParameters(_entity);
+			} else {
+				_securityParameters = new TLSSecurityParameters(_entity, _config.certificate, _config.privateKey);
+			}
+			protocol_version = _config.version;
+			
+			// So this...why is it here, other than to preclude a possible null pointer situation?
+			var states:Object = _securityParameters.getConnectionStates();
+			
+			_currentReadState = states.read;
+			_currentWriteState = states.write;
+			
+			_handshakePayloads = new ByteArray;
+			
+			_store = new X509CertificateCollection;
+		}
+		
+		/**
+		 * This starts the TLS negotiation for a TLS Client.
+		 * 
+		 * This is a no-op for a TLS Server.
+		 * 
+		 */
+		public function start():void {
+			if (_entity == CLIENT) {
+				try {
+					startHandshake();
+				} catch (e:TLSError) {
+					handleTLSError(e);
+				}
+			}
+		}
+		
+		
+		public function dataAvailable(e:* = null):void {
+			if (_state == STATE_CLOSED) return; // ignore
+			try {
+				parseRecord(_iStream);
+			} catch (e:TLSError) {
+				handleTLSError(e);
+			}
+		}
+		
+		public function close(e:TLSError = null):void {
+			if (_state == STATE_CLOSED) return; // ignore
+			// ok. send an Alert to let the peer know
+			var rec:ByteArray = new ByteArray;
+			if (e==null && _state != STATE_READY) {
+				// use canceled while handshaking. be nice about it
+				rec[0] = 1;
+				rec[1] = TLSError.user_canceled;
+				sendRecord(PROTOCOL_ALERT, rec);
+			}
+			rec[0] = 2;
+			if (e == null) {
+				rec[1] = TLSError.close_notify;
+			} else {
+				rec[1] = e.errorID;
+				trace("TLSEngine shutdown triggered by "+e);
+			}
+			sendRecord(PROTOCOL_ALERT, rec);
+			
+			_state = STATE_CLOSED;
+			dispatchEvent(new Event(Event.CLOSE));
+		}
+		
+		private var _packetQueue:Array = [];
+		private function parseRecord(stream:IDataInput):void {
+			var p:ByteArray;
+			while(_state!=STATE_CLOSED && stream.bytesAvailable>4) {
+				
+				if (_packetQueue.length>0) {
+					var packet:Object = _packetQueue.shift();
+					p = packet.data;
+					if (stream.bytesAvailable+p.length>=packet.length) {
+						// we have a whole packet. put together.
+						stream.readBytes(p, p.length, packet.length-p.length);
+						parseOneRecord(packet.type, packet.length, p);
+						// do another loop to parse any leftover record
+						continue;
+					} else {
+						// not enough. grab the data and park it.
+						stream.readBytes(p, p.length, stream.bytesAvailable);
+						_packetQueue.push(packet);
+						continue;
+					}
+				}
+
+
+				var type:uint = stream.readByte();
+				var ver:uint = stream.readShort();
+				var length:uint = stream.readShort();
+				if (length>16384+2048) { // support compression and encryption overhead.
+					throw new TLSError("Excessive TLS Record length: "+length, TLSError.record_overflow);
+				}
+				// Can pretty much assume that if I'm here, I've got a default config, so let's use it.
+				if (ver != _securityParameters.version ) {
+					throw new TLSError("Unsupported TLS version: "+ver.toString(16), TLSError.protocol_version);
+				}
+
+				p = new ByteArray;
+				var actualLength:uint = Math.min(stream.bytesAvailable, length);
+				stream.readBytes(p, 0, actualLength);
+				if (actualLength == length) {
+					parseOneRecord(type, length, p);
+				} else {
+					_packetQueue.push({type:type, length:length, data:p});
+				}
+			}
+		}
+		
+		
+		// Protocol handler map, provides a mapping of protocol types to individual packet handlers
+		private var protocolHandlers:Object = { 23 : parseApplicationData, // PROTOCOL_APPLICATION_DATA
+											  22 : parseHandshake, // PROTOCOL_HANDSHAKE
+											  21 : parseAlert, // PROTOCOL_ALERT
+											  20 : parseChangeCipherSpec }; // PROTOCOL_CHANGE_CIPHER_SPEC
+		
+		/**
+		 * Modified to support the notion of a handler map(see above ), since it makes for better clarity (IMHO of course).
+		 */
+		private function parseOneRecord(type:uint, length:uint, p:ByteArray):void {
+			p = _currentReadState.decrypt(type, length, p);
+			if (p.length>16384) { 
+				throw new TLSError("Excessive Decrypted TLS Record length: "+p.length, TLSError.record_overflow);
+			}
+			if (protocolHandlers.hasOwnProperty( type )) {
+				while( p != null)
+					p = protocolHandlers[ type ]( p );
+			} else {
+				throw new TLSError("Unsupported TLS Record Content Type: "+type.toString( 16 ), TLSError.unexpected_message);
+			}
+		}
+		
+		///////// handshake handling
+		// session identifier
+		// peer certificate
+		// compression method
+		// cipher spec
+		// master secret
+		// is resumable
+		private static const HANDSHAKE_HELLO_REQUEST:uint = 0;
+		private static const HANDSHAKE_CLIENT_HELLO:uint = 1;
+		private static const HANDSHAKE_SERVER_HELLO:uint = 2;
+		private static const HANDSHAKE_CERTIFICATE:uint = 11;
+		private static const HANDSHAKE_SERVER_KEY_EXCHANGE:uint = 12;
+		private static const HANDSHAKE_CERTIFICATE_REQUEST:uint = 13;
+		private static const HANDSHAKE_HELLO_DONE:uint = 14;
+		private static const HANDSHAKE_CERTIFICATE_VERIFY:uint = 15;
+		private static const HANDSHAKE_CLIENT_KEY_EXCHANGE:uint = 16;
+		private static const HANDSHAKE_FINISHED:uint = 20;
+
+		// Server handshake handler map
+		private var handshakeHandlersServer:Object = { 0 : notifyStateError, // HANDSHAKE_HELLO_REQUEST
+													   1 : parseHandshakeClientHello, // HANDSHAKE_CLIENT_HELLO
+													   2 : notifyStateError, // HANDSHAKE_SERVER_HELLO 
+													   11 : loadCertificates, // HANDSHAKE_CERTIFICATE
+													   12 : notifyStateError, // HANDSHAKE_SERVER_KEY_EXCHANGE
+													   13 : notifyStateError, // HANDSHAKE_CERTIFICATE_REQUEST
+													   14 : notifyStateError, // HANDSHAKE_HELLO_DONE
+													   15 : notifyStateError, // HANDSHAKE_CERTIFICATE_VERIFY
+													   16 : parseHandshakeClientKeyExchange, // HANDSHAKE_CLIENT_KEY_EXCHANGE
+													   20 : verifyHandshake // HANDSHAKE_FINISHED													   
+														};
+														
+		// Client handshake handler map										
+		private var handshakeHandlersClient:Object = { 0 : parseHandshakeHello, // HANDSHAKE_HELLO_REQUEST
+													   1 : notifyStateError, // HANDSHAKE_CLIENT_HELLO
+													   2 : parseHandshakeServerHello, // HANDSHAKE_SERVER_HELLO
+													   11 : loadCertificates, // HANDSHAKE_CERTIFICATE
+													   12 : parseServerKeyExchange, // HANDSHAKE_SERVER_KEY_EXCHANGE
+													   13 : setStateRespondWithCertificate, // HANDSHAKE_CERTIFICATE
+													   14 : sendClientAck, // HANDSHAKE_HELLO_DONE  
+													   15 : notifyStateError, // HANDSHAKE_CERTIFICATE_VERIFY
+													   16 : notifyStateError, // HANDSHAKE_CLIENT_KEY_EXCHANGE
+													   20 : verifyHandshake // HANDSHAKE_FINISHED
+														};
+		private var _entityHandshakeHandlers:Object;
+		private var _handshakeCanContinue:Boolean = true; // For handling cases where I might need to pause processing during a handshake (cert issues, etc.).
+		private var _handshakeQueue:Array = [];
+		/**
+		 * The handshake is always started by the client.
+		 */
+		private function startHandshake():void {
+			_state = STATE_NEGOTIATING;
+			// reset some other handshake state. XXX
+			sendClientHello();
+		}
+		
+		/**
+		 * Handle the incoming handshake packet.
+		 * 
+		 */
+		private function parseHandshake(p:ByteArray):ByteArray {
+			
+			if (p.length<4) {
+				trace("Handshake packet is way too short. bailing.");
+				return null;
+			}
+
+			p.position = 0;
+			
+			var rec:ByteArray = p;
+			var type:uint = rec.readUnsignedByte();
+			var tmp:uint = rec.readUnsignedByte();
+			var length:uint = (tmp<<16) | rec.readUnsignedShort();
+			if (length+4>p.length) {
+				// partial read.
+				trace("Handshake packet is incomplete. bailing.");
+				return null;
+			}
+
+			// we need to copy the record, to have a valid FINISHED exchange.
+			if (type!=HANDSHAKE_FINISHED) { 
+				_handshakePayloads.writeBytes(p, 0, length+4);
+			} 
+			
+			// Surf the handler map and find the right handler for this handshake packet type. 
+			// I modified the individual handlers so they encapsulate all possible knowledge 
+			// about the incoming packet type, so no previous handling or massaging of the data 
+			// is required, as was the case using the switch statement. BP
+			if (_entityHandshakeHandlers.hasOwnProperty( type )) {
+				if (_entityHandshakeHandlers[ type ] is Function) 
+					_entityHandshakeHandlers[ type ]( rec );
+			} else {
+				throw new TLSError( "Unimplemented or unknown handshake type!", TLSError.internal_error );
+			}
+			
+			// Get set up for the next packet.
+			if (length+4<p.length) {
+				var n:ByteArray = new ByteArray;
+				n.writeBytes(p,length+4, p.length-(length+4));
+				return n;
+			} else {
+				return null;
+			}
+		}
+		
+		/**
+		 * Throw an error when the detected handshake state isn't a valid state for the given entity type (client vs. server, etc. ).
+		 * This really should abort the handshake, since there's no case in which a server should EVER be confused about the type of entity it is. BP
+		 */
+		private function notifyStateError( rec:ByteArray ) : void {
+			throw new TLSError( "Invalid handshake state for a TLS Entity type of " + _entity, TLSError.internal_error ); 
+		}
+		
+		/**
+		 * two unimplemented functions
+		 */
+		private function parseClientKeyExchange( rec:ByteArray ) : void {
+			throw new TLSError( "ClientKeyExchange is currently unimplemented!", TLSError.internal_error );
+		}
+		
+		private function parseServerKeyExchange( rec:ByteArray ) : void {
+			throw new TLSError( "ServerKeyExchange is currently unimplemented!", TLSError.internal_error );
+		}
+		
+		/**
+		 * Test the server's Finished message for validity against the data we know about. Only slightly rewritten. BP
+		 */
+		private function verifyHandshake( rec:ByteArray):void {
+			// Get the Finished message
+			var verifyData:ByteArray = new ByteArray;
+			// This, in the vain hope that noboby is using SSL 2 anymore
+			if (_securityParameters.version == SSLSecurityParameters.PROTOCOL_VERSION) {
+				rec.readBytes(verifyData, 0, 36); // length should be (in fact, better be) 16 + 20 (md5-size + sha1-size)
+			} else { // presuming TLS
+				rec.readBytes(verifyData, 0, 12);
+			}
+			
+			var data:ByteArray = _securityParameters.computeVerifyData(1-_entity, _handshakePayloads);
+
+			if (ArrayUtil.equals(verifyData, data)) {
+				_state = STATE_READY;
+				dispatchEvent(new TLSEvent(TLSEvent.READY));
+			} else {
+				throw new TLSError("Invalid Finished mac.", TLSError.bad_record_mac);
+			}
+		}
+
+		// enforceClient/enforceServer removed in favor of state-driven function maps
+
+		/**
+		 * Handle a HANDSHAKE_HELLO
+		 */
+		private function parseHandshakeHello( rec:ByteArray ) : void {
+			if (_state != STATE_READY) {
+				trace("Received an HELLO_REQUEST before being in state READY. ignoring.");
+				return;
+			}
+			_handshakePayloads = new ByteArray;
+			startHandshake();
+		}
+		
+		/**
+		 * Handle a HANDSHAKE_CLIENT_KEY_EXCHANGE
+		 */
+		private function parseHandshakeClientKeyExchange(rec:ByteArray):void {
+			if (_securityParameters.useRSA) {
+				// skip 2 bytes for length.
+				var len:uint = rec.readShort();
+				var cipher:ByteArray = new ByteArray;
+				rec.readBytes(cipher, 0, len);
+				var preMasterSecret:ByteArray = new ByteArray;
+				_config.privateKey.decrypt(cipher, preMasterSecret, len);
+				_securityParameters.setPreMasterSecret(preMasterSecret);
+				
+				// now is a good time to get our pending states
+				var o:Object = _securityParameters.getConnectionStates();
+				_pendingReadState = o.read;
+				_pendingWriteState = o.write;
+				
+			} else {
+				throw new TLSError("parseHandshakeClientKeyExchange not implemented for DH modes.", TLSError.internal_error);
+			}
+			
+		}
+		
+		/** 
+		 * Handle HANDSHAKE_SERVER_HELLO - client-side
+		 */
+		private function parseHandshakeServerHello( rec:IDataInput ) : void {
+			
+			var ver:uint = rec.readShort(); 
+			if (ver != _securityParameters.version) {
+				throw new TLSError("Unsupported TLS version: "+ver.toString(16), TLSError.protocol_version);
+			}			
+			var random:ByteArray = new ByteArray;
+			rec.readBytes(random, 0, 32);
+			var session_length:uint = rec.readByte();
+			var session:ByteArray = new ByteArray;
+			if (session_length > 0) {
+				// some implementations don't assign a session ID
+				rec.readBytes(session, 0, session_length);
+			}
+			
+			_securityParameters.setCipher(rec.readShort()); 
+			_securityParameters.setCompression(rec.readByte());
+			_securityParameters.setServerRandom(random);
+		}
+		
+		/**
+		 *  Handle HANDSHAKE_CLIENT_HELLO - server side
+		 */
+		private function parseHandshakeClientHello( rec:IDataInput ) : void {
+			var ret:Object;
+			var ver:uint = rec.readShort(); 
+			if (ver != _securityParameters.version) {
+				throw new TLSError("Unsupported TLS version: "+ver.toString(16), TLSError.protocol_version);
+			}
+			
+			var random:ByteArray = new ByteArray;
+			rec.readBytes(random, 0, 32);
+			var session_length:uint = rec.readByte();
+			var session:ByteArray = new ByteArray;
+			if (session_length > 0) {
+				// some implementations don't assign a session ID
+				rec.readBytes(session, 0, session_length);
+			}
+			var suites:Array = [];
+			
+			var suites_length:uint = rec.readShort();
+			for (var i:uint=0;i<suites_length/2;i++) {
+				suites.push(rec.readShort());
+			}
+		
+			var compressions:Array = [];
+			
+			var comp_length:uint = rec.readByte();
+			for (i=0;i<comp_length;i++) {
+				compressions.push(rec.readByte());
+			}
+
+			ret = {random:random, session:session, suites:suites, compressions:compressions};
+			
+			var sofar:uint = 2+32+1+session_length+2+suites_length+1+comp_length;
+			var extensions:Array = [];
+			if (sofar<length) {
+				// we have extensions. great.
+				var ext_total_length:uint = rec.readShort();
+				while (ext_total_length>0) {
+					var ext_type:uint = rec.readShort();
+					var ext_length:uint = rec.readShort();
+					var ext_data:ByteArray = new ByteArray;
+					rec.readBytes(ext_data, 0, ext_length);
+					ext_total_length -= 4+ext_length;
+					extensions.push({type:ext_type, length:ext_length, data:ext_data});
+				}
+			}
+			ret.ext = extensions;
+			
+			sendServerHello(ret);
+			sendCertificate();
+			// TODO: Modify to handle case of requesting a certificate from the client, for "client authentication", 
+			// and testing purposes, will probably never actually need it.
+			sendServerHelloDone();
+		}
+		
+		private function sendClientHello():void {
+			var rec:ByteArray = new ByteArray;
+			// version - modified to support version attribute from ISecurityParameters
+			rec.writeShort(_securityParameters.version);  
+			// random
+			var prng:Random = new Random;
+			var clientRandom:ByteArray = new ByteArray;
+			prng.nextBytes(clientRandom, 32);
+			_securityParameters.setClientRandom(clientRandom);
+			rec.writeBytes(clientRandom,0,32);
+			// session
+			rec.writeByte(32);
+			prng.nextBytes(rec, 32);
+			// Cipher suites
+			var cs:Array = _config.cipherSuites;
+			rec.writeShort(2* cs.length);
+			for (var i:int=0;i<cs.length;i++) {
+				rec.writeShort(cs[i]);
+			}
+			// Compression
+			cs = _config.compressions;
+			rec.writeByte(cs.length);
+			for (i=0;i<cs.length;i++) {
+				rec.writeByte(cs[i]);
+			}
+			// no extensions, yet.
+			rec.position = 0;
+			sendHandshake(HANDSHAKE_CLIENT_HELLO, rec.length, rec);
+		}
+		
+		private function findMatch(a1:Array, a2:Array):int {
+			for (var i:int=0;i<a1.length;i++) {
+				var e:uint = a1[i];
+				if (a2.indexOf(e)>-1) {
+					return e;
+				}
+			}
+			return -1;
+		}
+		
+		private function sendServerHello(v:Object):void {
+			var cipher:int = findMatch(_config.cipherSuites, v.suites);
+			if (cipher == -1) {
+				throw new TLSError("No compatible cipher found.", TLSError.handshake_failure);
+			}
+			_securityParameters.setCipher(cipher);
+			
+			var comp:int = findMatch(_config.compressions, v.compressions);
+			if (comp == 01) {
+				throw new TLSError("No compatible compression method found.", TLSError.handshake_failure);
+			}
+			_securityParameters.setCompression(comp);
+			_securityParameters.setClientRandom(v.random);
+
+
+			var rec:ByteArray = new ByteArray;
+			rec.writeShort(_securityParameters.version);
+			var prng:Random = new Random;
+			var serverRandom:ByteArray = new ByteArray;
+			prng.nextBytes(serverRandom, 32);
+			_securityParameters.setServerRandom(serverRandom);
+			rec.writeBytes(serverRandom,0,32);
+			// session
+			rec.writeByte(32);
+			prng.nextBytes(rec, 32);
+			// Cipher suite
+			rec.writeShort(v.suites[0]);
+			// Compression
+			rec.writeByte(v.compressions[0]);
+			rec.position = 0;
+			sendHandshake(HANDSHAKE_SERVER_HELLO, rec.length, rec);
+		}
+		
+		private var sendClientCert:Boolean = false;
+		private function setStateRespondWithCertificate( r:ByteArray = null) : void {
+			sendClientCert = true;
+		}
+		
+		private function sendCertificate( r:ByteArray = null ):void {
+			var cert:ByteArray = _config.certificate;
+			var len:uint;
+			var len2:uint;
+			var rec:ByteArray = new ByteArray;
+			// Look for a certficate chain, if we have one, send it, if we don't, send an empty record.
+			if (cert != null) { 
+				len = cert.length;
+				len2 = cert.length + 3;
+				rec.writeByte(len2>>16);
+				rec.writeShort(len2&65535);
+				rec.writeByte(len>>16);
+				rec.writeShort(len&65535);
+				rec.writeBytes(cert);
+			} else {
+				rec.writeShort( 0 );
+				rec.writeByte( 0 );
+			}
+			rec.position = 0;
+			sendHandshake(HANDSHAKE_CERTIFICATE, rec.length, rec);
+		}
+		
+		private function sendCertificateVerify():void {
+			var rec:ByteArray = new ByteArray();
+			// Encrypt the handshake payloads here
+			var data:ByteArray = _securityParameters.computeCertificateVerify(_entity, _handshakePayloads);
+			data.position=0;
+			sendHandshake(HANDSHAKE_CERTIFICATE_VERIFY, data.length, data);
+		}
+		
+		private function sendServerHelloDone():void {
+			var rec:ByteArray = new ByteArray;
+			sendHandshake(HANDSHAKE_HELLO_DONE, rec.length, rec);
+		}
+		
+		private function sendClientKeyExchange():void {
+			if (_securityParameters.useRSA) {
+				var p:ByteArray = new ByteArray;
+				p.writeShort(_securityParameters.version);
+				var prng:Random = new Random;
+				prng.nextBytes(p, 46);
+				p.position = 0;
+
+				var preMasterSecret:ByteArray = new ByteArray;
+				preMasterSecret.writeBytes(p, 0, p.length);
+				preMasterSecret.position = 0;
+				_securityParameters.setPreMasterSecret(preMasterSecret);
+				 			
+				var enc_key:ByteArray = new ByteArray;
+				_otherCertificate.getPublicKey().encrypt(preMasterSecret, enc_key, preMasterSecret.length); 
+				
+				enc_key.position = 0;
+				var rec:ByteArray = new ByteArray;
+				
+				// TLS requires the size of the premaster key be sent BUT
+				// SSL 3.0 does not
+				if (_securityParameters.version > 0x0300) { 
+					rec.writeShort(enc_key.length);
+				}
+				rec.writeBytes(enc_key, 0, enc_key.length);
+				
+				rec.position=0;
+				
+				sendHandshake(HANDSHAKE_CLIENT_KEY_EXCHANGE, rec.length, rec);
+				
+				// now is a good time to get our pending states
+				var o:Object = _securityParameters.getConnectionStates();
+				_pendingReadState = o.read;
+				_pendingWriteState = o.write;
+				
+			} else {
+				throw new TLSError("Non-RSA Client Key Exchange not implemented.", TLSError.internal_error);
+			}
+		}
+		private function sendFinished():void {
+			var data:ByteArray = _securityParameters.computeVerifyData(_entity, _handshakePayloads);
+			data.position=0;
+			sendHandshake(HANDSHAKE_FINISHED, data.length, data);
+		}
+		
+		private function sendHandshake(type:uint, len:uint, payload:IDataInput):void {
+			var rec:ByteArray = new ByteArray;
+			rec.writeByte(type);
+			rec.writeByte(0);
+			rec.writeShort(len);
+			payload.readBytes(rec, rec.position, len);
+			_handshakePayloads.writeBytes(rec, 0, rec.length);
+			sendRecord(PROTOCOL_HANDSHAKE, rec);
+		}
+		
+		private function sendChangeCipherSpec():void {
+			var rec:ByteArray = new ByteArray;
+			rec[0] = 1;
+			sendRecord(PROTOCOL_CHANGE_CIPHER_SPEC, rec);
+			
+			// right after, switch the cipher for writing.
+			_currentWriteState = _pendingWriteState;
+			_pendingWriteState = null;	
+		}
+		
+		public function sendApplicationData(data:ByteArray, offset:uint=0, length:uint=0):void {
+			var rec:ByteArray = new ByteArray;
+			var len:uint = length;
+			// BIG FAT WARNING: Patch from Arlen Cuss ALA As3crypto group on Google code. 
+			// This addresses data overflow issues when the packet size hits the max length boundary.
+			if (len == 0) len = data.length;  
+			while (len>16384) {
+				rec.position = 0;
+				rec.writeBytes(data, offset, 16384);
+				rec.position = 0;
+				sendRecord(PROTOCOL_APPLICATION_DATA, rec);
+				offset += 16384;
+				len -= 16384;
+			}
+			rec.position = 0;
+			rec.writeBytes(data, offset, len);
+			// trace("Data I'm sending..." + Hex.fromArray( data ));
+			rec.position = 0;
+			sendRecord(PROTOCOL_APPLICATION_DATA, rec);
+		}
+		private function sendRecord(type:uint, payload:ByteArray):void {
+			// encrypt
+			payload = _currentWriteState.encrypt(type, payload);
+			
+			_oStream.writeByte(type);
+			_oStream.writeShort(_securityParameters.version);
+			_oStream.writeShort(payload.length);
+			_oStream.writeBytes(payload, 0, payload.length);
+			
+			scheduleWrite();
+		}
+		
+		private var _writeScheduler:uint;
+		private function scheduleWrite():void {
+			if (_writeScheduler!=0) return;
+			_writeScheduler = setTimeout(commitWrite, 0);
+		}
+		private function commitWrite():void {
+			clearTimeout(_writeScheduler);
+			_writeScheduler = 0;
+			if (_state != STATE_CLOSED) {
+				dispatchEvent(new ProgressEvent(ProgressEvent.SOCKET_DATA));
+			}
+		}
+		
+		private function sendClientAck( rec:ByteArray ):void {
+			if ( _handshakeCanContinue ) {
+				// If I have a pending cert request, send it
+				if (sendClientCert)
+					sendCertificate();
+				// send a client key exchange
+				sendClientKeyExchange();
+				// Send the certificate verify, if we have one
+				if (_config.certificate != null)
+					sendCertificateVerify();
+				// send a change cipher spec
+				sendChangeCipherSpec();
+				// send a finished
+				sendFinished();
+			}
+		}
+
+		/**
+		 * Vaguely gross function that parses a RSA key out of a certificate.
+		 * 
+		 * As long as that certificate looks just the way we expect it to.
+		 * 
+		 */
+		private function loadCertificates( rec:ByteArray ):void {
+			var tmp:uint = rec.readByte();
+			var certs_len:uint = (tmp<<16) | rec.readShort();
+			var certs:Array = [];
+			
+			while (certs_len>0) {
+				tmp = rec.readByte();
+				var cert_len:uint = (tmp<<16) | rec.readShort();
+				var cert:ByteArray = new ByteArray;
+				rec.readBytes(cert, 0, cert_len);
+				certs.push(cert);
+				certs_len -= 3 + cert_len;
+			}
+			
+			var firstCert:X509Certificate = null;
+			for (var i:int=0;i<certs.length;i++) {
+				var x509:X509Certificate = new X509Certificate(certs[i]);
+				_store.addCertificate(x509);
+				if (firstCert==null) {
+					firstCert = x509;
+				}
+			}
+
+			
+			// Test first for trust override parameters
+			// This nice trust override stuff comes from Joey Parrish via As3crypto forums
+			var certTrusted:Boolean;
+			if (_config.trustAllCertificates) {
+				certTrusted = true; // Blatantly trust everything
+			} else if (_config.trustSelfSignedCertificates ) {
+				// Self-signed certs
+				certTrusted = firstCert.isSelfSigned(new Date); 
+			} else {
+				// Certs with a signer in the CA store - realistically, I should setup an event chain to handle this
+				certTrusted = firstCert.isSigned(_store, _config.CAStore );
+			}
+	
+			// Good so far
+			if (certTrusted) {							
+				// ok, that's encouraging. now for the hostname match.
+				if (_otherIdentity==null || _config.ignoreCommonNameMismatch ) {
+					// we don't care who we're talking with. groovy.
+					_otherCertificate = firstCert;
+				} else {
+					// use regex to handle wildcard certs
+					var commonName:String = firstCert.getCommonName();
+					// replace all regex special characters with escaped version, except for asterisk
+					// replace the asterisk with a regex sequence to match one or more non-dot characters
+					var commonNameRegex:RegExp = new RegExp( commonName.replace(/[\^\\\-$.[\]|()?+{}]/g, "\\$&").replace(/\*/g, "[^.]+"), "gi");
+					if (commonNameRegex.exec(_otherIdentity)) {
+						_otherCertificate = firstCert;
+					} else {
+						if (_config.promptUserForAcceptCert ) {
+							_handshakeCanContinue = false;
+							dispatchEvent( new TLSEvent( TLSEvent.PROMPT_ACCEPT_CERT ));
+						} else {
+					 		throw new TLSError("Invalid common name: "+firstCert.getCommonName()+", expected "+_otherIdentity, TLSError.bad_certificate);
+					 	}
+					}
+				}
+			
+			} else {
+				// Let's ask the user if we can accept this cert. I'm not certain of the behaviour in case of timeouts, 
+				// so I probably need to handle the case by killing and restarting the connection rather than continuing if it becomes 
+				// an issue. We shall see. BP
+				if (_config.promptUserForAcceptCert) {
+					_handshakeCanContinue = false;
+					dispatchEvent( new TLSEvent( TLSEvent.PROMPT_ACCEPT_CERT ));
+				} else {
+					// Cannot continue, die.
+					throw new TLSError("Cannot verify certificate", TLSError.bad_certificate);
+				}
+			}
+		}
+		
+		// Accept the peer cert, and keep going
+		public function acceptPeerCertificate() : void {
+			_handshakeCanContinue = true;
+			sendClientAck( null );
+		}
+		
+		// Step off biotch! No trust for you!
+		public function rejectPeerCertificate() : void {
+			throw new TLSError("Peer certificate not accepted!", TLSError.bad_certificate);
+		}
+		
+		
+		private function parseAlert(p:ByteArray):void {
+			//throw new Error("Alert not implemented.");
+			// 7.2
+			trace("GOT ALERT! type="+p[1]);
+			close();
+		}
+		private function parseChangeCipherSpec(p:ByteArray):void {
+			p.readUnsignedByte();
+			if (_pendingReadState==null) {
+				throw new TLSError("Not ready to Change Cipher Spec, damnit.", TLSError.unexpected_message);
+			}
+			_currentReadState = _pendingReadState;
+			_pendingReadState = null;
+			// 7.1
+		}
+		private function parseApplicationData(p:ByteArray):void {
+			if (_state != STATE_READY) {
+				throw new TLSError("Too soon for data!", TLSError.unexpected_message);
+				return;
+			}
+			dispatchEvent(new TLSEvent(TLSEvent.DATA, p));
+		}
+		
+		private function handleTLSError(e:TLSError):void {
+			// basic rules to keep things simple:
+			// - Make a good faith attempt at notifying peers
+			// - TLSErrors are always fatal.
+			// BP: Meh...not always. Common Name mismatches appear to be common on servers. Instead of closing, let's pause, and ask for confirmation 
+			// before we tear the connection down.
+			
+			close(e);
+		}
+	}
+}
-- 
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