/**
* This class should not be constructed directly instead use HttpProxyBuilder to build and configure
* this class
*
* @see ProxyBuilder
* @author jamesdbloom
*/
public interface Proxy {
public static final AttributeKey<Proxy> HTTP_PROXY = AttributeKey.valueOf("HTTP_PROXY");
public static final AttributeKey<LogFilter> LOG_FILTER = AttributeKey.valueOf("PROXY_LOG_FILTER");
public static final AttributeKey<InetSocketAddress> REMOTE_SOCKET =
AttributeKey.valueOf("REMOTE_SOCKET");
public static final AttributeKey<InetSocketAddress> HTTP_CONNECT_SOCKET =
AttributeKey.valueOf("HTTP_CONNECT_SOCKET");
public void stop();
public boolean isRunning();
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
LOGGER.debug(
String.format("[%s]\n========关闭连接=======", ctx.channel().localAddress().toString()));
LOGGER.debug(ctx.channel().remoteAddress().toString());
LOGGER.debug(ctx.channel().attr(AttributeKey.valueOf("haha")).get().toString());
}
static {
b = MarkerManager.getMarker("NETWORK_PACKETS", a);
c = AttributeKey.valueOf("protocol");
d =
new class_nw() {
protected NioEventLoopGroup a() {
return new NioEventLoopGroup(
0,
(new ThreadFactoryBuilder())
.setNameFormat("Netty Client IO #%d")
.setDaemon(true)
.build());
}
// $FF: synthetic method
@Override
protected Object b() {
return this.a();
}
};
e =
new class_nw() {
protected EpollEventLoopGroup a() {
return new EpollEventLoopGroup(
0,
(new ThreadFactoryBuilder())
.setNameFormat("Netty Epoll Client IO #%d")
.setDaemon(true)
.build());
}
// $FF: synthetic method
@Override
protected Object b() {
return this.a();
}
};
f =
new class_nw() {
protected LocalEventLoopGroup a() {
return new LocalEventLoopGroup(
0,
(new ThreadFactoryBuilder())
.setNameFormat("Netty Local Client IO #%d")
.setDaemon(true)
.build());
}
// $FF: synthetic method
@Override
protected Object b() {
return this.a();
}
};
}
@Sharable
public class HttpClientHandler extends ChannelDuplexHandler {
public static final AttributeKey<Boolean> HTTP_CLIENT_HANDLER_TRIGGERED_ERROR =
AttributeKey.valueOf("__HttpClientHandler_ErrorTriggered");
private final Logger logger = getLogger(getClass());
private final HttpClientResponseHandler httpClientResponseHandler;
private final HttpClientRequestHandler httpClientRequestHandler;
public HttpClientHandler(
HttpClientResponseHandler httpClientResponseHandler,
HttpClientRequestHandler httpClientRequestHandler) {
this.httpClientResponseHandler = httpClientResponseHandler;
this.httpClientRequestHandler = httpClientRequestHandler;
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
httpClientResponseHandler.handleResponse(ctx, msg);
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
throws Exception {
httpClientRequestHandler.handleRequest(ctx, msg, promise);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
httpClientResponseHandler.handleChannelInactive(ctx);
super.channelReadComplete(ctx);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, final Throwable cause) {
logger.trace("Exception on channel " + ctx.channel(), cause);
ctx.channel().attr(HTTP_CLIENT_HANDLER_TRIGGERED_ERROR).set(true);
HttpRequestContext httpRequestContext =
ctx.channel().attr(HttpRequestContext.HTTP_REQUEST_ATTRIBUTE_KEY).get();
if (httpRequestContext != null) {
httpRequestContext.getRequestEventBus().triggerEvent(Event.ERROR, httpRequestContext, cause);
}
}
}
@Override
public <X> X getAttribute(String key, Class<X> clz) {
AttributeKey<X> attributeKey = AttributeKey.valueOf(key);
Attribute<X> attribute = channel.attr(attributeKey);
return attribute == null ? null : attribute.get();
}
@Override
public <X, Y extends X> void setAttribute(String key, Class<X> clz, Y value) {
AttributeKey<X> attributeKey = AttributeKey.valueOf(key);
channel.attr(attributeKey).set(value);
}
/**
* AbstractTrafficShapingHandler allows to limit the global bandwidth (see {@link
* GlobalTrafficShapingHandler}) or per session bandwidth (see {@link
* ChannelTrafficShapingHandler}), as traffic shaping. It allows you to implement an almost real
* time monitoring of the bandwidth using the monitors from {@link TrafficCounter} that will call
* back every checkInterval the method doAccounting of this handler.<br>
* <br>
* If you want for any particular reasons to stop the monitoring (accounting) or to change the
* read/write limit or the check interval, several methods allow that for you:<br>
*
* <ul>
* <li><tt>configure</tt> allows you to change read or write limits, or the checkInterval
* <li><tt>getTrafficCounter</tt> allows you to have access to the TrafficCounter and so to stop
* or start the monitoring, to change the checkInterval directly, or to have access to its
* values.
* </ul>
*/
public abstract class AbstractTrafficShapingHandler extends ChannelDuplexHandler {
/** Default delay between two checks: 1s */
public static final long DEFAULT_CHECK_INTERVAL = 1000;
/** Default minimal time to wait */
private static final long MINIMAL_WAIT = 10;
/** Traffic Counter */
protected TrafficCounter trafficCounter;
/** Limit in B/s to apply to write */
private long writeLimit;
/** Limit in B/s to apply to read */
private long readLimit;
/** Delay between two performance snapshots */
protected long checkInterval = DEFAULT_CHECK_INTERVAL; // default 1 s
private static final AttributeKey<Boolean> READ_SUSPENDED =
AttributeKey.valueOf(AbstractTrafficShapingHandler.class.getName() + ".READ_SUSPENDED");
private static final AttributeKey<Runnable> REOPEN_TASK =
AttributeKey.valueOf(AbstractTrafficShapingHandler.class.getName() + ".REOPEN_TASK");
/** @param newTrafficCounter the TrafficCounter to set */
void setTrafficCounter(TrafficCounter newTrafficCounter) {
trafficCounter = newTrafficCounter;
}
/**
* @param writeLimit 0 or a limit in bytes/s
* @param readLimit 0 or a limit in bytes/s
* @param checkInterval The delay between two computations of performances for channels or 0 if no
* stats are to be computed
*/
protected AbstractTrafficShapingHandler(long writeLimit, long readLimit, long checkInterval) {
this.writeLimit = writeLimit;
this.readLimit = readLimit;
this.checkInterval = checkInterval;
}
/**
* Constructor using default Check Interval
*
* @param writeLimit 0 or a limit in bytes/s
* @param readLimit 0 or a limit in bytes/s
*/
protected AbstractTrafficShapingHandler(long writeLimit, long readLimit) {
this(writeLimit, readLimit, DEFAULT_CHECK_INTERVAL);
}
/** Constructor using NO LIMIT and default Check Interval */
protected AbstractTrafficShapingHandler() {
this(0, 0, DEFAULT_CHECK_INTERVAL);
}
/**
* Constructor using NO LIMIT
*
* @param checkInterval The delay between two computations of performances for channels or 0 if no
* stats are to be computed
*/
protected AbstractTrafficShapingHandler(long checkInterval) {
this(0, 0, checkInterval);
}
/**
* Change the underlying limitations and check interval.
*
* @param newWriteLimit The new write limit (in bytes)
* @param newReadLimit The new read limit (in bytes)
* @param newCheckInterval The new check interval (in milliseconds)
*/
public void configure(long newWriteLimit, long newReadLimit, long newCheckInterval) {
configure(newWriteLimit, newReadLimit);
configure(newCheckInterval);
}
/**
* Change the underlying limitations.
*
* @param newWriteLimit The new write limit (in bytes)
* @param newReadLimit The new read limit (in bytes)
*/
public void configure(long newWriteLimit, long newReadLimit) {
writeLimit = newWriteLimit;
readLimit = newReadLimit;
if (trafficCounter != null) {
trafficCounter.resetAccounting(System.currentTimeMillis() + 1);
}
}
/**
* Change the check interval.
*
* @param newCheckInterval The new check interval (in milliseconds)
*/
public void configure(long newCheckInterval) {
checkInterval = newCheckInterval;
if (trafficCounter != null) {
trafficCounter.configure(checkInterval);
}
}
/**
* Called each time the accounting is computed from the TrafficCounters. This method could be used
* for instance to implement almost real time accounting.
*
* @param counter the TrafficCounter that computes its performance
*/
@SuppressWarnings("unused")
protected void doAccounting(TrafficCounter counter) {
// NOOP by default
}
/** Class to implement setReadable at fix time */
private static final class ReopenReadTimerTask implements Runnable {
final ChannelHandlerContext ctx;
ReopenReadTimerTask(ChannelHandlerContext ctx) {
this.ctx = ctx;
}
@Override
public void run() {
ctx.attr(READ_SUSPENDED).set(false);
ctx.read();
}
}
/** @return the time that should be necessary to wait to respect limit. Can be negative time */
private static long getTimeToWait(long limit, long bytes, long lastTime, long curtime) {
long interval = curtime - lastTime;
if (interval <= 0) {
// Time is too short, so just lets continue
return 0;
}
return (bytes * 1000 / limit - interval) / 10 * 10;
}
@Override
public void channelRead(final ChannelHandlerContext ctx, final Object msg) throws Exception {
long size = calculateSize(msg);
long curtime = System.currentTimeMillis();
if (trafficCounter != null) {
trafficCounter.bytesRecvFlowControl(size);
if (readLimit == 0) {
// no action
ctx.fireChannelRead(msg);
return;
}
// compute the number of ms to wait before reopening the channel
long wait =
getTimeToWait(
readLimit, trafficCounter.currentReadBytes(), trafficCounter.lastTime(), curtime);
if (wait >= MINIMAL_WAIT) { // At least 10ms seems a minimal
// time in order to
// try to limit the traffic
if (!isSuspended(ctx)) {
ctx.attr(READ_SUSPENDED).set(true);
// Create a Runnable to reactive the read if needed. If one was create before it will just
// be
// reused to limit object creation
Attribute<Runnable> attr = ctx.attr(REOPEN_TASK);
Runnable reopenTask = attr.get();
if (reopenTask == null) {
reopenTask = new ReopenReadTimerTask(ctx);
attr.set(reopenTask);
}
ctx.executor().schedule(reopenTask, wait, TimeUnit.MILLISECONDS);
} else {
// Create a Runnable to update the next handler in the chain. If one was create before it
// will
// just be reused to limit object creation
Runnable bufferUpdateTask =
new Runnable() {
@Override
public void run() {
ctx.fireChannelRead(msg);
}
};
ctx.executor().schedule(bufferUpdateTask, wait, TimeUnit.MILLISECONDS);
return;
}
}
}
ctx.fireChannelRead(msg);
}
@Override
public void read(ChannelHandlerContext ctx) {
if (!isSuspended(ctx)) {
ctx.read();
}
}
private static boolean isSuspended(ChannelHandlerContext ctx) {
Boolean suspended = ctx.attr(READ_SUSPENDED).get();
if (suspended == null || Boolean.FALSE.equals(suspended)) {
return false;
}
return true;
}
@Override
public void write(final ChannelHandlerContext ctx, final Object msg, final ChannelPromise promise)
throws Exception {
long curtime = System.currentTimeMillis();
long size = calculateSize(msg);
if (size > -1 && trafficCounter != null) {
trafficCounter.bytesWriteFlowControl(size);
if (writeLimit == 0) {
ctx.write(msg, promise);
return;
}
// compute the number of ms to wait before continue with the
// channel
long wait =
getTimeToWait(
writeLimit, trafficCounter.currentWrittenBytes(), trafficCounter.lastTime(), curtime);
if (wait >= MINIMAL_WAIT) {
ctx.executor()
.schedule(
new Runnable() {
@Override
public void run() {
ctx.write(msg, promise);
}
},
wait,
TimeUnit.MILLISECONDS);
return;
}
}
ctx.write(msg, promise);
}
/** @return the current TrafficCounter (if channel is still connected) */
public TrafficCounter trafficCounter() {
return trafficCounter;
}
@Override
public String toString() {
return "TrafficShaping with Write Limit: "
+ writeLimit
+ " Read Limit: "
+ readLimit
+ " and Counter: "
+ (trafficCounter != null ? trafficCounter.toString() : "none");
}
/**
* Calculate the size of the given {@link Object}.
*
* <p>This implementation supports {@link ByteBuf} and {@link ByteBufHolder}. Sub-classes may
* override this.
*
* @param msg the msg for which the size should be calculated
* @return size the size of the msg or {@code -1} if unknown.
*/
protected long calculateSize(Object msg) {
if (msg instanceof ByteBuf) {
return ((ByteBuf) msg).readableBytes();
}
if (msg instanceof ByteBufHolder) {
return ((ByteBufHolder) msg).content().readableBytes();
}
return -1;
}
}
@Sharable
public class EncoderHandler extends ChannelOutboundHandlerAdapter {
private static final byte[] OK = "ok".getBytes(CharsetUtil.UTF_8);
public static final AttributeKey<String> ORIGIN = AttributeKey.valueOf("origin");
public static final AttributeKey<String> USER_AGENT = AttributeKey.valueOf("userAgent");
public static final AttributeKey<Boolean> B64 = AttributeKey.valueOf("b64");
public static final AttributeKey<Integer> JSONP_INDEX = AttributeKey.valueOf("jsonpIndex");
public static final AttributeKey<Boolean> WRITE_ONCE = AttributeKey.valueOf("writeOnce");
private final Logger log = LoggerFactory.getLogger(getClass());
private final PacketEncoder encoder;
private String version;
private Configuration configuration;
public EncoderHandler(Configuration configuration, PacketEncoder encoder) throws IOException {
this.encoder = encoder;
this.configuration = configuration;
if (configuration.isAddVersionHeader()) {
readVersion();
}
}
private void readVersion() throws IOException {
Enumeration<URL> resources = getClass().getClassLoader().getResources("META-INF/MANIFEST.MF");
while (resources.hasMoreElements()) {
try {
Manifest manifest = new Manifest(resources.nextElement().openStream());
Attributes attrs = manifest.getMainAttributes();
if (attrs == null) {
continue;
}
String name = attrs.getValue("Bundle-Name");
if (name != null && name.equals("netty-socketio")) {
version = name + "/" + attrs.getValue("Bundle-Version");
break;
}
} catch (IOException E) {
// skip it
}
}
}
private void write(XHROptionsMessage msg, ChannelHandlerContext ctx, ChannelPromise promise) {
HttpResponse res = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.OK);
HttpHeaders.addHeader(res, "Set-Cookie", "io=" + msg.getSessionId());
HttpHeaders.addHeader(res, CONNECTION, KEEP_ALIVE);
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_HEADERS, CONTENT_TYPE);
addOriginHeaders(ctx.channel(), res);
ByteBuf out = encoder.allocateBuffer(ctx.alloc());
sendMessage(msg, ctx.channel(), out, res, promise);
}
private void write(XHRPostMessage msg, ChannelHandlerContext ctx, ChannelPromise promise) {
ByteBuf out = encoder.allocateBuffer(ctx.alloc());
out.writeBytes(OK);
sendMessage(msg, ctx.channel(), out, "text/html", promise);
}
private void sendMessage(
HttpMessage msg, Channel channel, ByteBuf out, String type, ChannelPromise promise) {
HttpResponse res = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.OK);
res.headers()
.add(CONTENT_TYPE, type)
.add("Set-Cookie", "io=" + msg.getSessionId())
.add(CONNECTION, KEEP_ALIVE);
addOriginHeaders(channel, res);
HttpHeaders.setContentLength(res, out.readableBytes());
// prevent XSS warnings on IE
// https://github.com/LearnBoost/socket.io/pull/1333
String userAgent = channel.attr(EncoderHandler.USER_AGENT).get();
if (userAgent != null && (userAgent.contains(";MSIE") || userAgent.contains("Trident/"))) {
res.headers().add("X-XSS-Protection", "0");
}
sendMessage(msg, channel, out, res, promise);
}
private void sendMessage(
HttpMessage msg, Channel channel, ByteBuf out, HttpResponse res, ChannelPromise promise) {
channel.write(res);
if (log.isTraceEnabled()) {
log.trace(
"Out message: {} - sessionId: {}", out.toString(CharsetUtil.UTF_8), msg.getSessionId());
}
if (out.isReadable()) {
channel.write(out);
} else {
out.release();
}
channel
.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT, promise)
.addListener(ChannelFutureListener.CLOSE);
}
private void addOriginHeaders(Channel channel, HttpResponse res) {
if (version != null) {
res.headers().add(HttpHeaders.Names.SERVER, version);
}
if (configuration.getOrigin() != null) {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, configuration.getOrigin());
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_CREDENTIALS, Boolean.TRUE);
} else {
String origin = channel.attr(ORIGIN).get();
if (origin != null) {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, origin);
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_CREDENTIALS, Boolean.TRUE);
} else {
HttpHeaders.addHeader(res, ACCESS_CONTROL_ALLOW_ORIGIN, "*");
}
}
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
throws Exception {
if (!(msg instanceof BaseMessage)) {
super.write(ctx, msg, promise);
return;
}
if (msg instanceof OutPacketMessage) {
OutPacketMessage m = (OutPacketMessage) msg;
if (m.getTransport() == Transport.WEBSOCKET) {
handleWebsocket((OutPacketMessage) msg, ctx, promise);
}
if (m.getTransport() == Transport.POLLING) {
handleHTTP((OutPacketMessage) msg, ctx, promise);
}
} else if (msg instanceof XHROptionsMessage) {
write((XHROptionsMessage) msg, ctx, promise);
} else if (msg instanceof XHRPostMessage) {
write((XHRPostMessage) msg, ctx, promise);
}
}
private void handleWebsocket(
final OutPacketMessage msg, ChannelHandlerContext ctx, ChannelPromise promise)
throws IOException {
while (true) {
Queue<Packet> queue = msg.getClientHead().getPacketsQueue(msg.getTransport());
Packet packet = queue.poll();
if (packet == null) {
promise.setSuccess();
break;
}
final ByteBuf out = encoder.allocateBuffer(ctx.alloc());
encoder.encodePacket(packet, out, ctx.alloc(), true);
WebSocketFrame res = new TextWebSocketFrame(out);
if (log.isTraceEnabled()) {
log.trace(
"Out message: {} sessionId: {}", out.toString(CharsetUtil.UTF_8), msg.getSessionId());
}
if (out.isReadable()) {
ctx.channel().writeAndFlush(res, promise);
} else {
promise.setSuccess();
out.release();
}
for (ByteBuf buf : packet.getAttachments()) {
ByteBuf outBuf = encoder.allocateBuffer(ctx.alloc());
outBuf.writeByte(4);
outBuf.writeBytes(buf);
if (log.isTraceEnabled()) {
log.trace(
"Out attachment: {} sessionId: {}", ByteBufUtil.hexDump(outBuf), msg.getSessionId());
}
ctx.channel().writeAndFlush(new BinaryWebSocketFrame(outBuf));
}
}
}
private void handleHTTP(OutPacketMessage msg, ChannelHandlerContext ctx, ChannelPromise promise)
throws IOException {
Channel channel = ctx.channel();
Attribute<Boolean> attr = channel.attr(WRITE_ONCE);
Queue<Packet> queue = msg.getClientHead().getPacketsQueue(msg.getTransport());
if (!channel.isActive() || queue.isEmpty() || !attr.compareAndSet(null, true)) {
promise.setSuccess();
return;
}
ByteBuf out = encoder.allocateBuffer(ctx.alloc());
Boolean b64 = ctx.channel().attr(EncoderHandler.B64).get();
if (b64 != null && b64) {
Integer jsonpIndex = ctx.channel().attr(EncoderHandler.JSONP_INDEX).get();
encoder.encodeJsonP(jsonpIndex, queue, out, ctx.alloc(), 50);
String type = "application/javascript";
if (jsonpIndex == null) {
type = "text/plain";
}
sendMessage(msg, channel, out, type, promise);
} else {
encoder.encodePackets(queue, out, ctx.alloc(), 50);
sendMessage(msg, channel, out, "application/octet-stream", promise);
}
}
}
public class OutboundMessageHandler {
private static final long FIVE_MINUTES = TimeUnit.MINUTES.toMillis(5);
private static final AttributeKey<Long> lastMessageAttrKey =
AttributeKey.valueOf("__last_message");
private final Logger logger = LoggerFactory.getLogger(OutboundMessageHandler.class);
private final Map<Long, Boolean> checkedUsers = new HashMap<>();
private final Map<String, Channel> connections;
private final Bootstrap outboundBootstrap;
private final String channel;
private final AuthenticationManager authenticationManager;
private final ScheduledExecutorService eventLoopGroup;
private ScheduledFuture scheduledFuture;
public OutboundMessageHandler(
Map<String, Channel> connections,
String channel,
AuthenticationManager authenticationManager,
EventLoopGroup eventLoopGroup) {
this.connections = connections;
this.channel = channel;
this.authenticationManager = authenticationManager;
this.eventLoopGroup = eventLoopGroup;
this.outboundBootstrap = new Bootstrap();
this.outboundBootstrap.group(eventLoopGroup);
if (Epoll.isAvailable()) {
this.outboundBootstrap.channel(EpollSocketChannel.class);
} else {
this.outboundBootstrap.channel(NioSocketChannel.class);
}
this.outboundBootstrap.option(ChannelOption.SO_KEEPALIVE, true);
this.outboundBootstrap.option(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT);
final ChannelHandler stringEncoder = new StringEncoder(CharsetUtil.UTF_8);
final ChannelHandler stringDecoder = new StringDecoder(CharsetUtil.UTF_8);
final ChannelHandler handler = new Handler();
this.outboundBootstrap.handler(
new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel channel) throws Exception {
ChannelPipeline pipeline = channel.pipeline();
pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
pipeline.addLast(stringEncoder);
pipeline.addLast(stringDecoder);
pipeline.addLast(handler);
}
});
}
public void shutdown() {
this.scheduledFuture.cancel(false);
this.connections.values().forEach(Channel::close);
}
public void onMessage(Message message) {
if (message.getType() == MessageType.MSG && message.get(MessageProperty.ROOM).equals("#main")) {
long userId = message.get(MessageProperty.USER_ID);
String name = message.get(MessageProperty.NAME);
UserCredentials userCredentials = null;
if (needsFetchingConnectionData(userId)) {
userCredentials = fetchConnectionDataForUser(name, userId);
}
if (userCredentials != null) {
String id = userCredentials.getId();
Channel channel = connections.get(id.toLowerCase());
if (channel == null || !channel.isActive()) {
try {
channel = createConnection(id, userCredentials.getToken());
} catch (InterruptedException e) {
logger.warn("", e);
}
}
if (channel != null) {
channel.attr(lastMessageAttrKey).set(System.currentTimeMillis());
channel.writeAndFlush(
"PRIVMSG #" + this.channel + " :" + message.get(MessageProperty.TEXT) + "\r\n");
}
}
}
}
private boolean needsFetchingConnectionData(long userId) {
Boolean tmp = checkedUsers.get(userId);
return tmp == null || tmp;
}
private UserCredentials fetchConnectionDataForUser(String userName, long userId) {
UserCredentials userCredentials = null;
logger.debug("fetching connection data for user {}", userName);
boolean r = false;
UserAuthDto auth = authenticationManager.getAuthDataForUser(userId, "twitch.tv");
if (auth != null) {
String token = auth.getAuthenticationKey();
String extName = auth.getAuthenticationName();
logger.debug("fetched data for user {} with ext name {}", userName, extName, token);
if (token != null && extName != null) {
userCredentials = new UserCredentials(extName, token);
}
r = true;
}
checkedUsers.put(userId, r);
return userCredentials;
}
private Channel createConnection(String id, String token) throws InterruptedException {
Channel channel;
logger.debug("creating connection for {}", id);
ChannelFuture f = outboundBootstrap.connect("irc.twitch.tv", 6667).sync();
channel = f.channel();
channel.write("TWITCHCLIENT 2\r\n");
channel.write("PASS oauth:" + token + "\r\n");
channel.write("NICK " + id + "\r\n");
channel.write("JOIN #" + channel + "\r\n");
channel.flush();
connections.put(id.toLowerCase(), channel);
logger.debug("connection created");
return channel;
}
public void start() {
this.scheduledFuture =
eventLoopGroup.scheduleAtFixedRate(new ConnectionCleanupTask(), 10, 5, TimeUnit.MINUTES);
}
private static class UserCredentials {
private final String id;
private final String token;
private UserCredentials(String id, String token) {
this.id = id;
this.token = token;
}
public String getId() {
return id;
}
public String getToken() {
return token;
}
}
@Sharable
private class Handler extends SimpleChannelInboundHandler<String> {
@Override
protected void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
logger.trace("received message {}", msg);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (cause instanceof IOException) {
logger.debug("exception", cause);
} else {
logger.warn("exception", cause);
}
}
}
private class ConnectionCleanupTask implements Runnable {
@Override
public void run() {
try {
logger.debug("starting cleanup");
for (Map.Entry<String, Channel> entry : connections.entrySet()) {
Channel channel = entry.getValue();
Long lastMessage = channel.attr(lastMessageAttrKey).get();
if (System.currentTimeMillis() - lastMessage > FIVE_MINUTES) {
channel.disconnect();
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
} else if (!channel.isActive()) {
connections.remove(entry.getKey());
logger.debug("connection released for {}", entry.getKey());
}
}
logger.debug("cleanup complete");
} catch (Exception e) {
logger.error("exception while clean up", e);
}
}
}
}
/** Netty channel handler for routing inbound requests to the proper RequestHandler. */
@Sharable
public class HttpRequestChannelHandler extends SimpleChannelInboundHandler<FullHttpRequest> {
public static final AttributeKey<PooledServerResponse> ATTR_RESPONSE =
AttributeKey.<PooledServerResponse>valueOf("response");
private final HttpServerConfig config;
private final ServerMessagePool messagePool;
public HttpRequestChannelHandler(final HttpServerConfig config_) {
super();
config = config_;
messagePool = new ServerMessagePool(config.maxConnections());
}
@Override
public void channelRead0(final ChannelHandlerContext ctx, final FullHttpRequest msg)
throws Exception {
final RequestHandlerMapping mapping = config.getRequestMapping(msg.getUri());
String relativePath = msg.getUri();
if (mapping != null) {
relativePath = relativePath.substring(mapping.path().length());
}
// Create request/response
final PooledServerRequest request = messagePool.getRequest();
// Handle 503 - sanity check, should be caught in acceptor
if (request == null) {
sendServerError(ctx, new ServerTooBusyException("Maximum concurrent connections reached"));
return;
}
request.init(ctx.channel(), msg, relativePath);
final RequestHandler handler = mapping == null ? null : mapping.handler(request);
final PooledServerResponse response = messagePool.getResponse();
response.init(ctx, this, handler, request, config.logger());
if (mapping == null) {
// No handler found, 404
response.setStatus(HttpResponseStatus.NOT_FOUND);
}
// Store in ChannelHandlerContext for future reference
ctx.attr(ATTR_RESPONSE).set(response);
try {
// MJS: Dispatch an error if not found or authorized
if (response.getStatus() == HttpResponseStatus.UNAUTHORIZED
|| response.getStatus() == HttpResponseStatus.NOT_FOUND) {
config.errorHandler().onError(request, response, null);
} else {
handler.onRequest(request, response);
}
} catch (final Throwable t) {
// Catch server errors
response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
try {
config.errorHandler().onError(request, response, t);
} catch (final Throwable t2) {
response.write(
t.getClass()
+ " was thrown while processing this request. Additionally, "
+ t2.getClass()
+ " was thrown while handling this exception.");
}
config.logger().error(request, response, t);
// Force request to end on exception, async handlers cannot allow
// unchecked exceptions and still expect to return data
if (!response.isFinished()) {
response.finish();
}
} finally {
// If handler did not request async response, finish request
if (!response.isFinished() && !response.isSuspended()) {
response.finish();
}
}
}
private void sendServerError(final ChannelHandlerContext ctx, final ServerException cause)
throws Exception {
if (ctx.channel().isActive()) {
final ByteBuf content = Unpooled.buffer();
content.writeBytes(
(cause.getStatus().code()
+ " "
+ cause.getStatus().reasonPhrase()
+ " - "
+ cause.getMessage())
.getBytes());
final FullHttpResponse response =
new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, cause.getStatus());
response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, content.readableBytes());
response.content().writeBytes(content);
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public void channelInactive(final ChannelHandlerContext ctx) {
final PooledServerResponse response = ctx.attr(ATTR_RESPONSE).get();
if (response != null) {
try {
if (!response.isFinished()) {
response.close();
final RequestHandler handler = response.handler();
if (handler != null) {
handler.onAbort(response.request(), response);
}
}
} finally {
freeHandlers(ctx);
}
}
}
@Override
public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable exception)
throws Exception {
final PooledServerResponse response = ctx.attr(ATTR_RESPONSE).get();
if (response != null) {
try {
try {
if (!response.isFinished()) {
response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
config.errorHandler().onError(response.request(), response, exception);
response.close();
final RequestHandler handler = response.handler();
if (handler != null) {
handler.onException(response.request(), response, exception);
}
}
} finally {
config.logger().error(response.request(), response, exception);
}
} finally {
freeHandlers(ctx);
}
}
}
/** Free any request/response handlers related to the current channel handler context. */
public void freeHandlers(final ChannelHandlerContext ctx) {
final PooledServerResponse response = ctx.attr(ATTR_RESPONSE).getAndRemove();
if (response != null) {
try {
final RequestHandler handler = response.handler();
if (handler != null) {
handler.onComplete(response.request(), response);
}
} finally {
response.request().release();
messagePool.makeAvailable(response.request());
response.close();
messagePool.makeAvailable(response);
}
}
}
}
/**
* Channel handler deals with the switch connection and dispatches messages to the higher orders of
* control.
*
* @author Jason Parraga <*****@*****.**>
*/
class OFChannelHandler extends SimpleChannelInboundHandler<Iterable<OFMessage>> {
private static final Logger log = LoggerFactory.getLogger(OFChannelHandler.class);
public static final AttributeKey<OFChannelInfo> ATTR_CHANNEL_INFO =
AttributeKey.valueOf("channelInfo");
private final ChannelPipeline pipeline;
private final INewOFConnectionListener newConnectionListener;
private final SwitchManagerCounters counters;
private Channel channel;
private final Timer timer;
private volatile OFChannelState state;
private OFFactory factory;
private OFFeaturesReply featuresReply;
private volatile OFConnection connection;
private final IDebugCounterService debugCounters;
private final List<U32> ofBitmaps;
/**
* transaction Ids to use during handshake. Since only one thread calls into the OFChannelHandler
* we don't need atomic. We will count down
*/
private long handshakeTransactionIds = 0x00FFFFFFFFL;
private volatile long echoSendTime;
private volatile long featuresLatency;
/**
* Default implementation for message handlers in any OFChannelState.
*
* <p>Individual states must override these if they want a behavior that differs from the default.
*/
public abstract class OFChannelState {
void processOFHello(OFHello m) throws IOException {
// we only expect hello in the WAIT_HELLO state
illegalMessageReceived(m);
}
void processOFEchoRequest(OFEchoRequest m) throws IOException {
sendEchoReply(m);
}
void processOFEchoReply(OFEchoReply m) throws IOException {
/* Update the latency -- halve it for one-way time */
updateLatency(U64.of((System.currentTimeMillis() - echoSendTime) / 2));
}
void processOFError(OFErrorMsg m) {
logErrorDisconnect(m);
}
void processOFExperimenter(OFExperimenter m) {
unhandledMessageReceived(m);
}
void processOFFeaturesReply(OFFeaturesReply m) throws IOException {
// we only expect features reply in the WAIT_FEATURES_REPLY state
illegalMessageReceived(m);
}
void processOFPortStatus(OFPortStatus m) {
unhandledMessageReceived(m);
}
private final boolean channelHandshakeComplete;
OFChannelState(boolean handshakeComplete) {
this.channelHandshakeComplete = handshakeComplete;
}
void logState() {
log.debug(
"{} OFConnection Handshake - enter state {}",
getConnectionInfoString(),
this.getClass().getSimpleName());
}
/**
* enter this state. Can initialize the handler, send the necessary messages, etc.
*
* @throws IOException
*/
void enterState() throws IOException {
// Do Nothing
}
/**
* Get a string specifying the switch connection, state, and message received. To be used as
* message for SwitchStateException or log messages
*
* @param h The channel handler (to get switch information_
* @param m The OFMessage that has just been received
* @param details A string giving more details about the exact nature of the problem.
* @return
*/
// needs to be protected because enum members are acutally subclasses
protected String getSwitchStateMessage(OFMessage m, String details) {
return String.format(
"Switch: [%s], State: [%s], received: [%s]" + ", details: %s",
getConnectionInfoString(), this.toString(), m.getType().toString(), details);
}
/**
* We have an OFMessage we didn't expect given the current state and we want to treat this as an
* error. We currently throw an exception that will terminate the connection However, we could
* be more forgiving
*
* @param h the channel handler that received the message
* @param m the message
* @throws SwitchStateExeption we always through the execption
*/
// needs to be protected because enum members are acutally subclasses
protected void illegalMessageReceived(OFMessage m) {
String msg =
getSwitchStateMessage(m, "Switch should never send this message in the current state");
throw new SwitchStateException(msg);
}
/**
* We have an OFMessage we didn't expect given the current state and we want to ignore the
* message
*
* @param h the channel handler the received the message
* @param m the message
*/
protected void unhandledMessageReceived(OFMessage m) {
counters.unhandledMessage.increment();
if (log.isDebugEnabled()) {
String msg = getSwitchStateMessage(m, "Ignoring unexpected message");
log.debug(msg);
}
}
/**
* Log an OpenFlow error message from a switch
*
* @param sw The switch that sent the error
* @param error The error message
*/
protected void logError(OFErrorMsg error) {
log.error(
"{} from switch {} in state {}",
new Object[] {error.toString(), getConnectionInfoString(), this.toString()});
}
/**
* Log an OpenFlow error message from a switch and disconnect the channel
*
* @param sw The switch that sent the error
* @param error The error message
*/
protected void logErrorDisconnect(OFErrorMsg error) {
logError(error);
channel.disconnect();
}
/**
* Process an OF message received on the channel and update state accordingly.
*
* <p>The main "event" of the state machine. Process the received message, send follow up
* message if required and update state if required.
*
* <p>Switches on the message type and calls more specific event handlers for each individual OF
* message type. If we receive a message that is supposed to be sent from a controller to a
* switch we throw a SwitchStateExeption.
*
* <p>The more specific handlers can also throw SwitchStateExceptions
*
* @param h The OFChannelHandler that received the message
* @param m The message we received.
* @throws SwitchStateException
* @throws IOException
*/
void processOFMessage(OFMessage m) throws IOException {
// Handle Channel Handshake
if (!state.channelHandshakeComplete) {
switch (m.getType()) {
case HELLO:
processOFHello((OFHello) m);
break;
case ERROR:
processOFError((OFErrorMsg) m);
break;
case FEATURES_REPLY:
processOFFeaturesReply((OFFeaturesReply) m);
break;
case EXPERIMENTER:
processOFExperimenter((OFExperimenter) m);
break;
/* echos can be sent at any time */
case ECHO_REPLY:
processOFEchoReply((OFEchoReply) m);
break;
case ECHO_REQUEST:
processOFEchoRequest((OFEchoRequest) m);
break;
case PORT_STATUS:
processOFPortStatus((OFPortStatus) m);
break;
default:
illegalMessageReceived(m);
break;
}
} else {
switch (m.getType()) {
case ECHO_REPLY:
processOFEchoReply((OFEchoReply) m);
break;
case ECHO_REQUEST:
processOFEchoRequest((OFEchoRequest) m);
break;
// Send to SwitchManager and thus higher orders of control
default:
sendMessageToConnection(m);
break;
}
}
}
}
/** Initial state before channel is connected. */
class InitState extends OFChannelState {
InitState() {
super(false);
}
}
/**
* We send a HELLO to the switch and wait for a reply. Once we receive the reply we send an
* OFFeaturesRequest Next state is WaitFeaturesReplyState
*/
class WaitHelloState extends OFChannelState {
WaitHelloState() {
super(false);
}
@Override
void processOFHello(OFHello m) throws IOException {
OFVersion theirVersion = m.getVersion();
OFVersion commonVersion = null;
/* First, check if there's a version bitmap supplied. WE WILL ALWAYS HAVE a controller-provided version bitmap. */
if (theirVersion.compareTo(OFVersion.OF_13) >= 0 && !m.getElements().isEmpty()) {
List<U32> bitmaps = new ArrayList<U32>();
List<OFHelloElem> elements = m.getElements();
/* Grab all bitmaps supplied */
for (OFHelloElem e : elements) {
if (e instanceof OFHelloElemVersionbitmap) {
bitmaps.addAll(((OFHelloElemVersionbitmap) e).getBitmaps());
} else {
log.warn("Unhandled OFHelloElem {}", e);
}
}
/* Lookup highest, common supported OpenFlow version */
commonVersion = computeOFVersionFromBitmap(bitmaps);
if (commonVersion == null) {
log.error(
"Could not negotiate common OpenFlow version for {} with greatest version bitmap algorithm.",
channel.remoteAddress());
channel.disconnect();
return;
} else {
log.info(
"Negotiated OpenFlow version of {} for {} with greatest version bitmap algorithm.",
commonVersion.toString(),
channel.remoteAddress());
factory = OFFactories.getFactory(commonVersion);
OFMessageDecoder decoder = pipeline.get(OFMessageDecoder.class);
decoder.setVersion(commonVersion);
}
}
/* If there's not a bitmap present, choose the lower of the two supported versions. */
else if (theirVersion.compareTo(factory.getVersion()) < 0) {
log.info(
"Negotiated down to switch OpenFlow version of {} for {} using lesser hello header algorithm.",
theirVersion.toString(),
channel.remoteAddress());
factory = OFFactories.getFactory(theirVersion);
OFMessageDecoder decoder = pipeline.get(OFMessageDecoder.class);
decoder.setVersion(theirVersion);
} /* else The controller's version is < or = the switch's, so keep original controller factory. */ else if (theirVersion
.equals(factory.getVersion())) {
log.info(
"Negotiated equal OpenFlow version of {} for {} using lesser hello header algorithm.",
factory.getVersion().toString(),
channel.remoteAddress());
} else {
log.info(
"Negotiated down to controller OpenFlow version of {} for {} using lesser hello header algorithm.",
factory.getVersion().toString(),
channel.remoteAddress());
}
setState(new WaitFeaturesReplyState());
}
@Override
void enterState() throws IOException {
sendHelloMessage();
}
}
/**
* We are waiting for a features reply message. Once we receive it we send capture the features
* reply. Next state is CompleteState
*/
class WaitFeaturesReplyState extends OFChannelState {
WaitFeaturesReplyState() {
super(false);
}
@Override
void processOFFeaturesReply(OFFeaturesReply m) throws IOException {
featuresReply = m;
featuresLatency = (System.currentTimeMillis() - featuresLatency) / 2;
// Mark handshake as completed
setState(new CompleteState());
}
@Override
void processOFHello(OFHello m) throws IOException {
/*
* Brocade switches send a second hello after
* the controller responds with its hello. This
* might be to confirm the protocol version used,
* but isn't defined in the OF specification.
*
* We will ignore such hello messages assuming
* the version of the hello is correct according
* to the algorithm in the spec.
*
* TODO Brocade also sets the XID of this second
* hello as the same XID the controller used.
* Checking for this might help to assure we're
* really dealing with the situation we think
* we are.
*/
if (m.getVersion().equals(factory.getVersion())) {
log.warn(
"Ignoring second hello from {} in state {}. Might be a Brocade.",
channel.remoteAddress(),
state.toString());
} else {
super.processOFHello(m); /* Versions don't match as they should; abort */
}
}
@Override
void processOFPortStatus(OFPortStatus m) {
log.warn(
"Ignoring PORT_STATUS message from {} during OpenFlow channel establishment. Ports will be explicitly queried in a later state.",
channel.remoteAddress());
}
@Override
void enterState() throws IOException {
sendFeaturesRequest();
featuresLatency = System.currentTimeMillis();
}
@Override
void processOFMessage(OFMessage m) throws IOException {
if (m.getType().equals(OFType.PACKET_IN)) {
log.warn(
"Ignoring PACKET_IN message from {} during OpenFlow channel establishment.",
channel.remoteAddress());
} else {
super.processOFMessage(m);
}
}
};
/**
* This state denotes that the channel handshaking is complete. An OF connection is generated and
* passed to the switch manager for handling.
*/
class CompleteState extends OFChannelState {
CompleteState() {
super(true);
}
@Override
void enterState() throws IOException {
setSwitchHandshakeTimeout();
// Handle non 1.3 connections
if (featuresReply.getVersion().compareTo(OFVersion.OF_13) < 0) {
connection =
new OFConnection(
featuresReply.getDatapathId(),
factory,
channel,
OFAuxId.MAIN,
debugCounters,
timer);
}
// Handle 1.3 connections
else {
connection =
new OFConnection(
featuresReply.getDatapathId(),
factory,
channel,
featuresReply.getAuxiliaryId(),
debugCounters,
timer);
// If this is an aux connection, we set a longer echo idle time
if (!featuresReply.getAuxiliaryId().equals(OFAuxId.MAIN)) {
setAuxChannelIdle();
}
}
connection.updateLatency(U64.of(featuresLatency));
echoSendTime = 0;
// Notify the connection broker
notifyConnectionOpened(connection);
}
};
/**
* Creates a handler for interacting with the switch channel
*
* @param controller the controller
* @param newConnectionListener the class that listens for new OF connections (switchManager)
* @param pipeline the channel pipeline
* @param threadPool the thread pool
* @param idleTimer the hash wheeled timer used to send idle messages (echo). passed to
* constructor to modify in case of aux connection.
* @param debugCounters
*/
OFChannelHandler(
@Nonnull IOFSwitchManager switchManager,
@Nonnull INewOFConnectionListener newConnectionListener,
@Nonnull ChannelPipeline pipeline,
@Nonnull IDebugCounterService debugCounters,
@Nonnull Timer timer,
@Nonnull List<U32> ofBitmaps,
@Nonnull OFFactory defaultFactory) {
Preconditions.checkNotNull(switchManager, "switchManager");
Preconditions.checkNotNull(newConnectionListener, "connectionOpenedListener");
Preconditions.checkNotNull(pipeline, "pipeline");
Preconditions.checkNotNull(timer, "timer");
Preconditions.checkNotNull(debugCounters, "debugCounters");
this.pipeline = pipeline;
this.debugCounters = debugCounters;
this.newConnectionListener = newConnectionListener;
this.counters = switchManager.getCounters();
this.state = new InitState();
this.timer = timer;
this.ofBitmaps = ofBitmaps;
this.factory = defaultFactory;
log.debug(
"constructor on OFChannelHandler {}", String.format("%08x", System.identityHashCode(this)));
}
/**
* Determine the highest supported version of OpenFlow in common between both our OFVersion bitmap
* and the switch's.
*
* @param theirs, the version bitmaps of the switch
* @return the highest OFVersion in common b/t the two
*/
private OFVersion computeOFVersionFromBitmap(List<U32> theirs) {
Iterator<U32> theirsItr = theirs.iterator();
Iterator<U32> oursItr = ofBitmaps.iterator();
OFVersion version = null;
int pos = 0;
int size = 32;
while (theirsItr.hasNext() && oursItr.hasNext()) {
int t = theirsItr.next().getRaw();
int o = oursItr.next().getRaw();
int common = t & o; /* Narrow down the results to the common bits */
for (int i = 0; i < size; i++) {
/* Iterate over and locate the 1's */
int tmp = common & (1 << i); /* Select the bit of interest, 0-31 */
if (tmp != 0) {
/* Is the version of this bit in common? */
for (OFVersion v : OFVersion.values()) {
/* Which version does this bit represent? */
if (v.getWireVersion() == i + (size * pos)) {
version = v;
}
}
}
}
pos++; /* OFVersion position. 1-31 = 1, 32 - 63 = 2, etc. Inc at end so it starts at 0. */
}
return version;
}
/**
* Determines if the entire switch handshake is complete (channel+switch). If the channel
* handshake is complete the call is forwarded to the connection listener/switch manager to be
* handled by the appropriate switch handshake handler.
*
* @return whether or not complete switch handshake is complete
*/
public boolean isSwitchHandshakeComplete() {
if (this.state.channelHandshakeComplete) {
return connection.getListener().isSwitchHandshakeComplete(connection);
} else {
return false;
}
}
/** Notifies the channel listener that we have a valid baseline connection */
private final void notifyConnectionOpened(OFConnection connection) {
this.connection = connection;
this.newConnectionListener.connectionOpened(connection, featuresReply);
}
/** Notifies the channel listener that we our connection has been closed */
private final void notifyConnectionClosed(OFConnection connection) {
connection.getListener().connectionClosed(connection);
}
/** Notifies the channel listener that we have a valid baseline connection */
private final void sendMessageToConnection(OFMessage m) {
connection.messageReceived(m);
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
log.debug(
"channelConnected on OFChannelHandler {}",
String.format("%08x", System.identityHashCode(this)));
counters.switchConnected.increment();
channel = ctx.channel();
log.info("New switch connection from {}", channel.remoteAddress());
setState(new WaitHelloState());
}
@Override
public void channelInactive(ChannelHandlerContext ctx) {
// Only handle cleanup connection is even known
if (this.connection != null) {
// Alert the connection object that the channel has been disconnected
this.connection.disconnected();
// Punt the cleanup to the Switch Manager
notifyConnectionClosed(this.connection);
}
log.info("[{}] Disconnected connection", getConnectionInfoString());
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
if (cause instanceof ReadTimeoutException) {
if (featuresReply.getVersion().compareTo(OFVersion.OF_13) < 0) {
log.error(
"Disconnecting switch {} due to read timeout on main cxn.", getConnectionInfoString());
ctx.channel().close();
} else {
if (featuresReply.getAuxiliaryId().equals(OFAuxId.MAIN)) {
log.error(
"Disconnecting switch {} due to read timeout on main cxn.",
getConnectionInfoString());
ctx.channel().close();
} else {
// We only don't disconnect on aux connections
log.warn("Switch {} encountered read timeout on aux cxn.", getConnectionInfoString());
}
}
// Increment counters
counters.switchDisconnectReadTimeout.increment();
} else if (cause instanceof HandshakeTimeoutException) {
log.error(
"Disconnecting switch {}: failed to complete handshake. Channel handshake complete : {}",
getConnectionInfoString(),
this.state.channelHandshakeComplete);
counters.switchDisconnectHandshakeTimeout.increment();
ctx.channel().close();
} else if (cause instanceof ClosedChannelException) {
log.debug("Channel for sw {} already closed", getConnectionInfoString());
} else if (cause instanceof IOException) {
log.error(
"Disconnecting switch {} due to IO Error: {}",
getConnectionInfoString(),
cause.getMessage());
if (log.isDebugEnabled()) {
// still print stack trace if debug is enabled
log.debug("StackTrace for previous Exception: ", cause);
}
counters.switchDisconnectIOError.increment();
ctx.channel().close();
} else if (cause instanceof SwitchStateException) {
log.error(
"Disconnecting switch {} due to switch state error: {}",
getConnectionInfoString(),
cause.getMessage());
if (log.isDebugEnabled()) {
// still print stack trace if debug is enabled
log.debug("StackTrace for previous Exception: ", cause);
}
counters.switchDisconnectSwitchStateException.increment();
ctx.channel().close();
} else if (cause instanceof OFAuxException) {
log.error(
"Disconnecting switch {} due to OF Aux error: {}",
getConnectionInfoString(),
cause.getMessage());
if (log.isDebugEnabled()) {
// still print stack trace if debug is enabled
log.debug("StackTrace for previous Exception: ", cause);
}
counters.switchDisconnectSwitchStateException.increment();
ctx.channel().close();
} else if (cause instanceof OFParseError) {
log.error(
"Disconnecting switch " + getConnectionInfoString() + " due to message parse failure",
cause);
counters.switchDisconnectParseError.increment();
ctx.channel().close();
} else if (cause instanceof RejectedExecutionException) {
log.warn("Could not process message: queue full");
counters.rejectedExecutionException.increment();
} else if (cause instanceof IllegalArgumentException) {
log.error("Illegal argument exception with switch {}. {}", getConnectionInfoString(), cause);
counters.switchSslConfigurationError.increment();
ctx.channel().close();
} else {
log.error(
"Error while processing message from switch "
+ getConnectionInfoString()
+ "state "
+ this.state,
cause);
counters.switchDisconnectOtherException.increment();
ctx.channel().close();
}
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
log.debug(
"channelIdle on OFChannelHandler {}", String.format("%08x", System.identityHashCode(this)));
OFChannelHandler handler = ctx.pipeline().get(OFChannelHandler.class);
handler.sendEchoRequest();
}
@Override
public void channelRead0(ChannelHandlerContext ctx, Iterable<OFMessage> msgList)
throws Exception {
for (OFMessage ofm : msgList) {
try {
// Do the actual packet processing
state.processOFMessage(ofm);
} catch (Exception ex) {
// We are the last handler in the stream, so run the
// exception through the channel again by passing in
// ctx.getChannel().
ctx.fireExceptionCaught(ex);
}
}
}
/**
* Sets the channel pipeline's idle (Echo) timeouts to a longer interval. This is specifically for
* aux channels.
*/
private void setAuxChannelIdle() {
IdleStateHandler idleHandler =
new IdleStateHandler(PipelineIdleReadTimeout.AUX, PipelineIdleWriteTimeout.AUX, 0);
pipeline.replace(PipelineHandler.MAIN_IDLE, PipelineHandler.AUX_IDLE, idleHandler);
}
/**
* Sets the channel pipeline's handshake timeout to a more appropriate value for the remaining
* part of the switch handshake.
*/
private void setSwitchHandshakeTimeout() {
HandshakeTimeoutHandler handler =
new HandshakeTimeoutHandler(this, this.timer, PipelineHandshakeTimeout.SWITCH);
pipeline.replace(
PipelineHandler.CHANNEL_HANDSHAKE_TIMEOUT,
PipelineHandler.SWITCH_HANDSHAKE_TIMEOUT,
handler);
}
/**
* Return a string describing this switch based on the already available information (DPID and/or
* remote socket)
*
* @return
*/
private String getConnectionInfoString() {
String channelString;
if (channel == null || channel.remoteAddress() == null) {
channelString = "?";
} else {
channelString = channel.remoteAddress().toString();
if (channelString.startsWith("/")) channelString = channelString.substring(1);
}
String dpidString;
if (featuresReply == null) {
dpidString = "?";
} else {
StringBuilder b = new StringBuilder();
b.append(featuresReply.getDatapathId());
if (featuresReply.getVersion().compareTo(OFVersion.OF_13) >= 0) {
b.append("(").append(featuresReply.getAuxiliaryId()).append(")");
}
dpidString = b.toString();
}
return String.format("[%s from %s]", dpidString, channelString);
}
/**
* Update the channels state. Only called from the state machine.
*
* @param state
* @throws IOException
*/
private void setState(OFChannelState state) throws IOException {
this.state = state;
state.logState();
state.enterState();
}
/**
* Send a features request message to the switch using the handshake transactions ids.
*
* @throws IOException
*/
private void sendFeaturesRequest() throws IOException {
// Send initial Features Request
OFFeaturesRequest m = factory.buildFeaturesRequest().setXid(handshakeTransactionIds--).build();
write(m);
}
/**
* Send a hello message to the switch using the handshake transactions ids.
*
* @throws IOException
*/
private void sendHelloMessage() throws IOException {
// Send initial hello message
OFHello.Builder builder = factory.buildHello();
/* Our highest-configured OFVersion does support version bitmaps, so include it */
if (factory.getVersion().compareTo(OFVersion.OF_13) >= 0) {
List<OFHelloElem> he = new ArrayList<OFHelloElem>();
he.add(factory.buildHelloElemVersionbitmap().setBitmaps(ofBitmaps).build());
builder.setElements(he);
}
OFHello m = builder.setXid(handshakeTransactionIds--).build();
write(m);
log.debug("Send hello: {}", m);
}
private void sendEchoRequest() {
OFEchoRequest request = factory.buildEchoRequest().setXid(handshakeTransactionIds--).build();
/* Record for latency calculation */
echoSendTime = System.currentTimeMillis();
write(request);
}
private void sendEchoReply(OFEchoRequest request) {
OFEchoReply reply =
factory.buildEchoReply().setXid(request.getXid()).setData(request.getData()).build();
write(reply);
}
private void write(OFMessage m) {
channel.writeAndFlush(Collections.singletonList(m));
}
OFChannelState getStateForTesting() {
return state;
}
IOFConnectionBackend getConnectionForTesting() {
return connection;
}
ChannelPipeline getPipelineForTesting() {
return this.pipeline;
}
private void updateLatency(U64 latency) {
if (connection != null) {
connection.updateLatency(latency);
}
}
}
public class Decoder {
public static final AttributeKey<InetSocketAddress> INET_ADDRESS_KEY =
AttributeKey.valueOf("inet-addr");
public static final AttributeKey<PeerAddress> PEER_ADDRESS_KEY =
AttributeKey.valueOf("peer-addr");
private static final Logger LOG = LoggerFactory.getLogger(Decoder.class);
private final Queue<Content> contentTypes = new LinkedList<Message.Content>();
// private Message2 result = null;
// current state - needs to be deleted if we want to reuse
private Message message = null;
private boolean headerDone = false;
private Signature signature = null;
private int neighborSize = -1;
private NeighborSet neighborSet = null;
private int peerSocketAddressSize = -1;
private List<PeerSocketAddress> peerSocketAddresses = null;
private int keyCollectionSize = -1;
private KeyCollection keyCollection = null;
private int mapSize = -1;
private DataMap dataMap = null;
private Data data = null;
private Number640 key = null;
private int keyMap640KeysSize = -1;
private KeyMap640Keys keyMap640Keys = null;
private int keyMapByteSize = -1;
private KeyMapByte keyMapByte = null;
private int bufferSize = -1;
private int bufferTransferred = 0;
private DataBuffer buffer = null;
private int trackerDataSize = -1;
private TrackerData trackerData = null;
private Data currentTrackerData = null;
private Content lastContent = null;
private final SignatureFactory signatureFactory;
public Decoder(SignatureFactory signatureFactory) {
this.signatureFactory = signatureFactory;
}
public boolean decode(
ChannelHandlerContext ctx,
final ByteBuf buf,
InetSocketAddress recipient,
final InetSocketAddress sender) {
LOG.debug("Decoding of TomP2P starts now. Readable: {}.", buf.readableBytes());
try {
final int readerBefore = buf.readerIndex();
// set the sender of this message for handling timeout
final Attribute<InetSocketAddress> attributeInet = ctx.attr(INET_ADDRESS_KEY);
attributeInet.set(sender);
if (message == null && !headerDone) {
headerDone = decodeHeader(buf, recipient, sender);
if (headerDone) {
// store the sender as an attribute
final Attribute<PeerAddress> attributePeerAddress = ctx.attr(PEER_ADDRESS_KEY);
attributePeerAddress.set(message.sender());
message.udp(ctx.channel() instanceof DatagramChannel);
if (message.isFireAndForget() && message.isUdp()) {
TimeoutFactory.removeTimeout(ctx);
}
} else {
return false;
}
}
final boolean donePayload = decodePayload(buf);
decodeSignature(buf, readerBefore, donePayload);
if (donePayload) {
boolean isRelay = message.sender().isRelayed();
if (isRelay && !message.peerSocketAddresses().isEmpty()) {
PeerAddress tmpSender =
message.sender().changePeerSocketAddresses(message.peerSocketAddresses());
message.sender(tmpSender);
}
}
// see https://github.com/netty/netty/issues/1976
buf.discardSomeReadBytes();
return donePayload;
} catch (Exception e) {
ctx.fireExceptionCaught(e);
e.printStackTrace();
return true;
}
}
public void decodeSignature(final ByteBuf buf, final int readerBefore, final boolean donePayload)
throws InvalidKeyException, SignatureException {
final int readerAfter = buf.readerIndex();
final int len = readerAfter - readerBefore;
if (len > 0) {
verifySignature(buf, readerBefore, len, donePayload);
}
}
private void verifySignature(
final ByteBuf buf, final int readerBefore, final int len, final boolean donePayload)
throws SignatureException, InvalidKeyException {
if (!message.isSign()) {
return;
}
// if we read the complete data, we also read the signature
// for the verification, we should not use this for the signature
final int length = donePayload ? len - signatureFactory.signatureSize() : len;
ByteBuffer[] byteBuffers = buf.nioBuffers(readerBefore, length);
if (signature == null) {
signature = signatureFactory.update(message.publicKey(0), byteBuffers);
} else {
for (int i = 0; i < byteBuffers.length; i++) {
signature.update(byteBuffers[i]);
}
}
if (donePayload) {
byte[] signatureReceived = message.receivedSignature().encode();
LOG.debug("Verifying received signature: {}", Arrays.toString(signatureReceived));
if (signature.verify(signatureReceived)) {
// set public key only if signature is correct
message.setVerified();
LOG.debug("Signature check OK.");
} else {
LOG.warn("Signature check NOT OK. Message: {}.", message);
}
}
}
public boolean decodeHeader(
final ByteBuf buf, InetSocketAddress recipient, final InetSocketAddress sender) {
if (message == null) {
if (buf.readableBytes() < MessageHeaderCodec.HEADER_SIZE) {
// we don't have the header yet, we need the full header first
// wait for more data
return false;
}
message = MessageHeaderCodec.decodeHeader(buf, recipient, sender);
}
if (message.sender().isNet4Private()
&& buf.readableBytes() < MessageHeaderCodec.HEADER_PRIVATE_ADDRESS_SIZE) {
return false;
} else if (message.sender().isNet4Private()
&& buf.readableBytes() >= MessageHeaderCodec.HEADER_PRIVATE_ADDRESS_SIZE) {
PeerSocketAddress internalPeerSocketAddress = PeerSocketAddress.create(buf, true);
message.sender(message.sender().changeInternalPeerSocketAddress(internalPeerSocketAddress));
}
// we have set the content types already
message.presetContentTypes(true);
for (Content content : message.contentTypes()) {
if (content == Content.EMPTY) {
break;
}
if (content == Content.PUBLIC_KEY_SIGNATURE) {
message.setHintSign();
}
contentTypes.offer(content);
}
LOG.debug("Parsed message {}.", message);
return true;
}
public boolean decodePayload(final ByteBuf buf)
throws NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException {
LOG.debug(
"About to pass message {} to {}. Buffer to read: {}.",
message,
message.senderSocket(),
buf.readableBytes());
if (!message.hasContent()) {
return true;
}
// payload comes here
int size;
PublicKey receivedPublicKey;
while (contentTypes.size() > 0) {
Content content = contentTypes.peek();
LOG.debug("Parse content: {} in message {}", content, message);
switch (content) {
case INTEGER:
if (buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
message.intValue(buf.readInt());
lastContent = contentTypes.poll();
break;
case LONG:
if (buf.readableBytes() < Utils.LONG_BYTE_SIZE) {
return false;
}
message.longValue(buf.readLong());
lastContent = contentTypes.poll();
break;
case KEY:
if (buf.readableBytes() < Number160.BYTE_ARRAY_SIZE) {
return false;
}
byte[] me = new byte[Number160.BYTE_ARRAY_SIZE];
buf.readBytes(me);
message.key(new Number160(me));
lastContent = contentTypes.poll();
break;
case BLOOM_FILTER:
if (buf.readableBytes() < Utils.SHORT_BYTE_SIZE) {
return false;
}
size = buf.getUnsignedShort(buf.readerIndex());
if (buf.readableBytes() < size) {
return false;
}
message.bloomFilter(new SimpleBloomFilter<Number160>(buf));
lastContent = contentTypes.poll();
break;
case SET_NEIGHBORS:
if (neighborSize == -1 && buf.readableBytes() < Utils.BYTE_BYTE_SIZE) {
return false;
}
if (neighborSize == -1) {
neighborSize = buf.readUnsignedByte();
}
if (neighborSet == null) {
neighborSet = new NeighborSet(-1, new ArrayList<PeerAddress>(neighborSize));
}
for (int i = neighborSet.size(); i < neighborSize; i++) {
if (buf.readableBytes() < Utils.SHORT_BYTE_SIZE) {
return false;
}
int header = buf.getUnsignedShort(buf.readerIndex());
size = PeerAddress.size(header);
if (buf.readableBytes() < size) {
return false;
}
PeerAddress pa = new PeerAddress(buf);
neighborSet.add(pa);
}
message.neighborsSet(neighborSet);
lastContent = contentTypes.poll();
neighborSize = -1;
neighborSet = null;
break;
case SET_PEER_SOCKET:
if (peerSocketAddressSize == -1 && buf.readableBytes() < Utils.BYTE_BYTE_SIZE) {
return false;
}
if (peerSocketAddressSize == -1) {
peerSocketAddressSize = buf.readUnsignedByte();
}
if (peerSocketAddresses == null) {
peerSocketAddresses = new ArrayList<PeerSocketAddress>(peerSocketAddressSize);
}
for (int i = peerSocketAddresses.size(); i < peerSocketAddressSize; i++) {
if (buf.readableBytes() < Utils.BYTE_BYTE_SIZE) {
return false;
}
int header = buf.getUnsignedByte(buf.readerIndex());
boolean isIPv4 = header == 0;
size = PeerSocketAddress.size(isIPv4);
if (buf.readableBytes() < size + Utils.BYTE_BYTE_SIZE) {
return false;
}
// skip the ipv4/ipv6 header
buf.skipBytes(1);
peerSocketAddresses.add(PeerSocketAddress.create(buf, isIPv4));
}
message.peerSocketAddresses(peerSocketAddresses);
lastContent = contentTypes.poll();
peerSocketAddressSize = -1;
peerSocketAddresses = null;
break;
case SET_KEY640:
if (keyCollectionSize == -1 && buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
if (keyCollectionSize == -1) {
keyCollectionSize = buf.readInt();
}
if (keyCollection == null) {
keyCollection = new KeyCollection(new ArrayList<Number640>(keyCollectionSize));
}
for (int i = keyCollection.size(); i < keyCollectionSize; i++) {
if (buf.readableBytes()
< Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE) {
return false;
}
byte[] me2 = new byte[Number160.BYTE_ARRAY_SIZE];
buf.readBytes(me2);
Number160 locationKey = new Number160(me2);
buf.readBytes(me2);
Number160 domainKey = new Number160(me2);
buf.readBytes(me2);
Number160 contentKey = new Number160(me2);
buf.readBytes(me2);
Number160 versionKey = new Number160(me2);
keyCollection.add(new Number640(locationKey, domainKey, contentKey, versionKey));
}
message.keyCollection(keyCollection);
lastContent = contentTypes.poll();
keyCollectionSize = -1;
keyCollection = null;
break;
case MAP_KEY640_DATA:
if (mapSize == -1 && buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
if (mapSize == -1) {
mapSize = buf.readInt();
}
if (dataMap == null) {
dataMap = new DataMap(new TreeMap<Number640, Data>());
}
if (data != null) {
if (!data.decodeBuffer(buf)) {
return false;
}
if (!data.decodeDone(buf, message.publicKey(0), signatureFactory)) {
return false;
}
data = null;
key = null;
}
for (int i = dataMap.size(); i < mapSize; i++) {
if (key == null) {
if (buf.readableBytes()
< Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE) {
return false;
}
byte[] me3 = new byte[Number160.BYTE_ARRAY_SIZE];
buf.readBytes(me3);
Number160 locationKey = new Number160(me3);
buf.readBytes(me3);
Number160 domainKey = new Number160(me3);
buf.readBytes(me3);
Number160 contentKey = new Number160(me3);
buf.readBytes(me3);
Number160 versionKey = new Number160(me3);
key = new Number640(locationKey, domainKey, contentKey, versionKey);
}
LOG.debug("Key decoded in message {}, remaining {}", message, buf.readableBytes());
data = Data.decodeHeader(buf, signatureFactory);
if (data == null) {
return false;
}
LOG.debug("Header decoded in message {}, remaining {}", message, buf.readableBytes());
dataMap.dataMap().put(key, data);
if (!data.decodeBuffer(buf)) {
return false;
}
LOG.debug("Buffer decoded in message {}", message);
if (!data.decodeDone(buf, message.publicKey(0), signatureFactory)) {
return false;
}
LOG.debug("Done decoded in message {}", message);
// if we have signed the message, set the public key anyway, but only if we indicated so
inheritPublicKey(message, data);
data = null;
key = null;
}
message.setDataMap(dataMap);
lastContent = contentTypes.poll();
mapSize = -1;
dataMap = null;
break;
case MAP_KEY640_KEYS:
if (keyMap640KeysSize == -1 && buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
if (keyMap640KeysSize == -1) {
keyMap640KeysSize = buf.readInt();
}
if (keyMap640Keys == null) {
keyMap640Keys = new KeyMap640Keys(new TreeMap<Number640, Collection<Number160>>());
}
final int meta =
Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE;
for (int i = keyMap640Keys.size(); i < keyMap640KeysSize; i++) {
if (buf.readableBytes() < meta + Utils.BYTE_BYTE_SIZE) {
return false;
}
size = buf.getUnsignedByte(buf.readerIndex() + meta);
if (buf.readableBytes()
< meta + Utils.BYTE_BYTE_SIZE + (size * Number160.BYTE_ARRAY_SIZE)) {
return false;
}
byte[] me3 = new byte[Number160.BYTE_ARRAY_SIZE];
buf.readBytes(me3);
Number160 locationKey = new Number160(me3);
buf.readBytes(me3);
Number160 domainKey = new Number160(me3);
buf.readBytes(me3);
Number160 contentKey = new Number160(me3);
buf.readBytes(me3);
Number160 versionKey = new Number160(me3);
int numBasedOn = buf.readByte();
Set<Number160> value = new HashSet<Number160>(numBasedOn);
for (int j = 0; j < numBasedOn; j++) {
buf.readBytes(me3);
Number160 basedOnKey = new Number160(me3);
value.add(basedOnKey);
}
keyMap640Keys.put(new Number640(locationKey, domainKey, contentKey, versionKey), value);
}
message.keyMap640Keys(keyMap640Keys);
lastContent = contentTypes.poll();
keyMap640KeysSize = -1;
keyMap640Keys = null;
break;
case MAP_KEY640_BYTE:
if (keyMapByteSize == -1 && buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
if (keyMapByteSize == -1) {
keyMapByteSize = buf.readInt();
}
if (keyMapByte == null) {
keyMapByte = new KeyMapByte(new HashMap<Number640, Byte>(2 * keyMapByteSize));
}
for (int i = keyMapByte.size(); i < keyMapByteSize; i++) {
if (buf.readableBytes()
< Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ Number160.BYTE_ARRAY_SIZE
+ 1) {
return false;
}
byte[] me3 = new byte[Number160.BYTE_ARRAY_SIZE];
buf.readBytes(me3);
Number160 locationKey = new Number160(me3);
buf.readBytes(me3);
Number160 domainKey = new Number160(me3);
buf.readBytes(me3);
Number160 contentKey = new Number160(me3);
buf.readBytes(me3);
Number160 versionKey = new Number160(me3);
byte value = buf.readByte();
keyMapByte.put(new Number640(locationKey, domainKey, contentKey, versionKey), value);
}
message.keyMapByte(keyMapByte);
lastContent = contentTypes.poll();
keyMapByteSize = -1;
keyMapByte = null;
break;
case BYTE_BUFFER:
if (bufferSize == -1 && buf.readableBytes() < Utils.INTEGER_BYTE_SIZE) {
return false;
}
if (bufferSize == -1) {
bufferSize = buf.readInt();
}
if (buffer == null) {
buffer = new DataBuffer();
}
final int remaining = bufferSize - bufferTransferred;
bufferTransferred += buffer.transferFrom(buf, remaining);
if (bufferTransferred < bufferSize) {
LOG.debug(
"Still looking for data. Indicating that its not finished yet. Already Transferred = {}, Size = {}.",
bufferTransferred,
bufferSize);
return false;
}
message.buffer(new Buffer(buffer.toByteBuf(), bufferSize));
lastContent = contentTypes.poll();
bufferSize = -1;
bufferTransferred = 0;
buffer = null;
break;
case SET_TRACKER_DATA:
if (trackerDataSize == -1 && buf.readableBytes() < Utils.BYTE_BYTE_SIZE) {
return false;
}
if (trackerDataSize == -1) {
trackerDataSize = buf.readUnsignedByte();
}
if (trackerData == null) {
trackerData = new TrackerData(new HashMap<PeerAddress, Data>(2 * trackerDataSize));
}
if (currentTrackerData != null) {
if (!currentTrackerData.decodeBuffer(buf)) {
return false;
}
if (!currentTrackerData.decodeDone(buf, message.publicKey(0), signatureFactory)) {
return false;
}
currentTrackerData = null;
}
for (int i = trackerData.size(); i < trackerDataSize; i++) {
if (buf.readableBytes() < Utils.SHORT_BYTE_SIZE) {
return false;
}
int header = buf.getUnsignedShort(buf.readerIndex());
size = PeerAddress.size(header);
if (buf.readableBytes() < size) {
return false;
}
PeerAddress pa = new PeerAddress(buf);
currentTrackerData = Data.decodeHeader(buf, signatureFactory);
if (currentTrackerData == null) {
return false;
}
trackerData.peerAddresses().put(pa, currentTrackerData);
if (message.isSign()) {
currentTrackerData.publicKey(message.publicKey(0));
}
if (!currentTrackerData.decodeBuffer(buf)) {
return false;
}
if (!currentTrackerData.decodeDone(buf, message.publicKey(0), signatureFactory)) {
return false;
}
currentTrackerData = null;
}
message.trackerData(trackerData);
lastContent = contentTypes.poll();
trackerDataSize = -1;
trackerData = null;
break;
case PUBLIC_KEY: // fall-through
case PUBLIC_KEY_SIGNATURE:
receivedPublicKey = signatureFactory.decodePublicKey(buf);
if (content == Content.PUBLIC_KEY_SIGNATURE) {
if (receivedPublicKey == PeerBuilder.EMPTY_PUBLIC_KEY) {
throw new InvalidKeyException("The public key cannot be empty.");
}
}
if (receivedPublicKey == null) {
return false;
}
message.publicKey(receivedPublicKey);
lastContent = contentTypes.poll();
break;
default:
break;
}
}
LOG.debug("Parsed content in message {}", message);
if (message.isSign()) {
size = signatureFactory.signatureSize();
if (buf.readableBytes() < size) {
return false;
}
SignatureCodec signatureEncode = signatureFactory.signatureCodec(buf);
message.receivedSignature(signatureEncode);
}
return true;
}
public Message prepareFinish() {
Message ret = message;
message.setDone();
contentTypes.clear();
message = null;
headerDone = false;
neighborSize = -1;
neighborSet = null;
keyCollectionSize = -1;
keyCollection = null;
mapSize = -1;
dataMap = null;
data = null;
keyMap640KeysSize = -1;
keyMap640Keys = null;
bufferSize = -1;
bufferTransferred = 0;
buffer = null;
signature = null;
return ret;
}
public Message message() {
return message;
}
public Content lastContent() {
return lastContent;
}
public static void inheritPublicKey(Message message, Data data) {
if (message.isSign()
&& message.publicKey(0) != null
&& data.hasPublicKey()
&& (data.publicKey() == null || data.publicKey() == PeerBuilder.EMPTY_PUBLIC_KEY)) {
data.publicKey(message.publicKey(0));
}
}
public void release() {
if (message != null) {
message.release();
}
// release partial data
if (data != null) {
data.release();
}
if (dataMap != null) {
for (Data data : dataMap.dataMap().values()) {
data.release();
}
}
if (buffer != null) {
buffer.release();
}
if (currentTrackerData != null) {
currentTrackerData.release();
}
if (trackerData != null) {
for (Data data : trackerData.peerAddresses().values()) {
data.release();
}
}
}
}
public final class SessionManager implements ISessionManager {
public static final AttributeKey<Session> SESSION_ATTR = AttributeKey.valueOf("Session.attr");
public static final AttributeKey<Integer> CHANNEL_ID_ATTR =
AttributeKey.valueOf("ChannelId.attr");
private final AtomicInteger idGenerator = new AtomicInteger();
private final Map<Integer, BaseSession> sessions = new ConcurrentHashMap<>();
private final ChannelGroup channelGroup = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
public static boolean isLocked = false;
public SessionManager() {
SessionManagerAccessor.getInstance().setSessionManager(this);
}
public boolean add(ChannelHandlerContext channel) {
Session session = new Session(channel);
// if(PlayerManager.getInstance().getPlayerCountByIpAddress(session.getIpAddress()) >
// CometSettings.maxConnectionsPerIpAddress) {
// return false;
// }
this.channelGroup.add(channel.channel());
channel.attr(CHANNEL_ID_ATTR).set(this.idGenerator.incrementAndGet());
return (this.sessions.putIfAbsent(channel.attr(CHANNEL_ID_ATTR).get(), session) == null);
}
public boolean remove(ChannelHandlerContext channel) {
if (this.sessions.containsKey(channel.attr(CHANNEL_ID_ATTR).get())) {
this.channelGroup.remove(channel.channel());
this.sessions.remove(channel.attr(CHANNEL_ID_ATTR).get());
return true;
}
return false;
}
public boolean disconnectByPlayerId(int id) {
if (PlayerManager.getInstance().getSessionIdByPlayerId(id) == -1) {
return false;
}
int sessionId = PlayerManager.getInstance().getSessionIdByPlayerId(id);
Session session = (Session) sessions.get(sessionId);
if (session != null) {
session.disconnect();
return true;
}
return false;
}
public Session getByPlayerId(int id) {
if (PlayerManager.getInstance().getSessionIdByPlayerId(id) != -1) {
int sessionId = PlayerManager.getInstance().getSessionIdByPlayerId(id);
return (Session) sessions.get(sessionId);
}
return null;
}
public Set<BaseSession> getByPlayerPermission(String permission) {
// TODO: Optimize this
Set<BaseSession> sessions = new HashSet<>();
// int rank =
// PermissionsManager.getInstance().getPermissions().get(permission).getRank();
//
// for (Map.Entry<Integer, BaseSession> session : this.sessions.entrySet()) {
// if (session.getValue().getPlayer() != null) {
// if (((Session) session.getValue()).getPlayer().getData().getRank() >= rank) {
// sessions.add(session.getValue());
// }
// }
// }
return sessions;
}
public Session getByPlayerUsername(String username) {
int playerId = PlayerManager.getInstance().getPlayerIdByUsername(username);
if (playerId == -1) return null;
int sessionId = PlayerManager.getInstance().getSessionIdByPlayerId(playerId);
if (sessionId == -1) return null;
if (this.sessions.containsKey(sessionId)) return (Session) this.sessions.get(sessionId);
return null;
}
public int getUsersOnlineCount() {
return PlayerManager.getInstance().size();
}
public Map<Integer, BaseSession> getSessions() {
return this.sessions;
}
public void broadcast(IMessageComposer msg) {
this.getChannelGroup().writeAndFlush(msg);
//
// for (Session client : sessions.values()) {
// client.getChannel().write(msg);
// }
}
public ChannelGroup getChannelGroup() {
return channelGroup;
}
public void broadcastToModerators(IMessageComposer messageComposer) {
for (BaseSession session : this.sessions.values()) {
if (session.getPlayer() != null
&& session.getPlayer().getPermissions() != null
&& session.getPlayer().getPermissions().getRank().modTool()) {
session.send(messageComposer);
}
}
}
@Override
public void parseCommand(String[] message, ChannelHandlerContext ctx) {
String password = message[0];
if (password.equals("cometServer")) {
String command = message[1];
switch (command) {
default:
{
ctx.channel().writeAndFlush("response||You're connected!");
break;
}
case "stats":
{
ctx.channel()
.writeAndFlush("response||" + JsonFactory.getInstance().toJson(CometStats.get()));
break;
}
}
} else {
ctx.disconnect();
}
}
}
/**
* A simple handler that serves incoming HTTP requests to send their respective HTTP responses. It
* also implements {@code 'If-Modified-Since'} header to take advantage of browser cache, as
* described in <a href="http://tools.ietf.org/html/rfc2616#section-14.25">RFC 2616</a>.
*
* <p>
*
* <h3>How Browser Caching Works</h3>
*
* <p>Web browser caching works with HTTP headers as illustrated by the following sample:
*
* <ol>
* <li>Request #1 returns the content of {@code /file1.txt}.
* <li>Contents of {@code /file1.txt} is cached by the browser.
* <li>Request #2 for {@code /file1.txt} does return the contents of the file again. Rather, a 304
* Not Modified is returned. This tells the browser to use the contents stored in its cache.
* <li>The server knows the file has not been modified because the {@code If-Modified-Since} date
* is the same as the file's last modified date.
* </ol>
*
* <p>
*
* <pre>
* Request #1 Headers
* ===================
* GET /file1.txt HTTP/1.1
*
* Response #1 Headers
* ===================
* HTTP/1.1 200 OK
* Date: Tue, 01 Mar 2011 22:44:26 GMT
* Last-Modified: Wed, 30 Jun 2010 21:36:48 GMT
* Expires: Tue, 01 Mar 2012 22:44:26 GMT
* Cache-Control: private, max-age=31536000
*
* Request #2 Headers
* ===================
* GET /file1.txt HTTP/1.1
* If-Modified-Since: Wed, 30 Jun 2010 21:36:48 GMT
*
* Response #2 Headers
* ===================
* HTTP/1.1 304 Not Modified
* Date: Tue, 01 Mar 2011 22:44:28 GMT
*
* </pre>
*/
public class HttpStaticFileServerHandler extends SimpleChannelInboundHandler<FullHttpRequest> {
private static final Logger logger = LoggerFactory.getLogger(HttpStaticFileServerHandler.class);
public static final String HTTP_DATE_FORMAT = "EEE, dd MMM yyyy HH:mm:ss zzz";
public static final String HTTP_DATE_GMT_TIMEZONE = "GMT";
public static final int HTTP_CACHE_SECONDS = 60;
public static final AttributeKey<Object> ATTACHMENT =
AttributeKey.valueOf("HttpStaticFileServerHandler.attachment");
public static final String STATIC_MAPPING =
SimpleChannelInboundHandler.class.getName() + ".staticMapping";
public static final String SERVICED = SimpleChannelInboundHandler.class.getName() + ".serviced";
private final List<String> paths;
private String defaultContentType = "text/html";
public HttpStaticFileServerHandler(List<String> paths) {
this.paths = paths;
}
@Override
public void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
if (!request.getDecoderResult().isSuccess()) {
sendError(ctx, BAD_REQUEST, request);
return;
}
if (request.getMethod() != GET) {
sendError(ctx, METHOD_NOT_ALLOWED, request);
return;
}
File file = null;
RandomAccessFile raf = null;
boolean found = true;
for (String p : paths) {
String path = p + sanitizeUri(request.getUri());
if (path == null) {
path = "/index.html";
}
if (path.endsWith("/") || path.endsWith(File.separator)) {
path += "index.html";
}
if (path.endsWith("/favicon.ico") || path.endsWith(File.separator)) {
request.headers().add(SERVICED, "true");
found = false;
continue;
}
file = new File(path);
if (file.isHidden() || !file.exists()) {
found = false;
continue;
}
// if (file.isDirectory()) {
// if (uri.endsWith("/")) {
// sendListing(ctx, file);
// } else {
// sendRedirect(ctx, uri + '/');
// }
// return;
// }
if (!file.isFile()) {
found = false;
continue;
}
try {
raf = new RandomAccessFile(file, "r");
found = true;
break;
} catch (FileNotFoundException ignore) {
sendError(ctx, NOT_FOUND, request);
return;
}
}
if (!found) {
sendError(ctx, NOT_FOUND, request);
return;
}
request.headers().add(SERVICED, "true");
// Cache Validation
String ifModifiedSince = request.headers().get(IF_MODIFIED_SINCE);
if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
SimpleDateFormat dateFormatter = new SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
Date ifModifiedSinceDate = dateFormatter.parse(ifModifiedSince);
// Only compare up to the second because the datetime format we send to the client
// does not have milliseconds
long ifModifiedSinceDateSeconds = ifModifiedSinceDate.getTime() / 1000;
long fileLastModifiedSeconds = file.lastModified() / 1000;
if (ifModifiedSinceDateSeconds == fileLastModifiedSeconds) {
sendNotModified(ctx);
return;
}
}
long fileLength = raf.length();
ctx.pipeline().addBefore(BridgeRuntime.class.getName(), "encoder", new HttpResponseEncoder());
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
HttpHeaders.setContentLength(response, fileLength);
contentType(request, response, file);
setDateAndCacheHeaders(response, file);
// if (HttpHeaders.isKeepAlive(request)) {
// response.headers().set(CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
// }
// Write the initial line and the header.
ctx.write(response);
// Write the content.
ChannelFuture sendFileFuture;
ChannelFuture lastContentFuture;
if (ctx.pipeline().get(SslHandler.class) == null) {
sendFileFuture =
ctx.write(
new DefaultFileRegion(raf.getChannel(), 0, fileLength), ctx.newProgressivePromise());
// Write the end marker.
lastContentFuture = ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
} else {
sendFileFuture =
ctx.writeAndFlush(
new HttpChunkedInput(new ChunkedFile(raf, 0, fileLength, 8192)),
ctx.newProgressivePromise());
// HttpChunkedInput will write the end marker (LastHttpContent) for us.
lastContentFuture = sendFileFuture;
}
sendFileFuture.addListener(
new ChannelProgressiveFutureListener() {
@Override
public void operationProgressed(
ChannelProgressiveFuture future, long progress, long total) {
if (total < 0) { // total unknown
logger.trace(future.channel() + " Transfer progress: " + progress);
} else {
logger.trace(future.channel() + " Transfer progress: " + progress + " / " + total);
}
}
@Override
public void operationComplete(ChannelProgressiveFuture future) {
logger.trace(future.channel() + " Transfer complete.");
}
});
// Close the connection when the whole content is written out.
lastContentFuture.addListener(ChannelFutureListener.CLOSE);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable t) {
Channel ch = ctx.channel();
// Prevent recursion when the client close the connection during a write operation. In that
// scenario the sendError will be invoked, but will fail since the channel has already been
// closed
// For an unknown reason,
if (ch.attr(ATTACHMENT) != null
&& Error.class.isAssignableFrom(ch.attr(ATTACHMENT).get().getClass())) {
return;
}
Throwable cause = t.getCause();
if (cause instanceof TooLongFrameException) {
sendError(ctx, BAD_REQUEST, null);
return;
}
ch.attr(ATTACHMENT).set(new Error());
if (ch.isOpen()) {
sendError(ctx, INTERNAL_SERVER_ERROR, null);
}
if (ctx.channel().isActive()) {
sendError(ctx, INTERNAL_SERVER_ERROR, null);
}
}
private static final Pattern INSECURE_URI = Pattern.compile(".*[<>&\"].*");
protected String sanitizeUri(String uri) {
try {
uri = URLDecoder.decode(uri, "UTF-8");
} catch (UnsupportedEncodingException e) {
try {
uri = URLDecoder.decode(uri, "ISO-8859-1");
} catch (UnsupportedEncodingException e1) {
throw new Error();
}
}
uri = uri.replace('/', File.separatorChar);
if (uri.contains(File.separator + ".")
|| uri.contains("." + File.separator)
|| uri.startsWith(".")
|| uri.endsWith(".")) {
return null;
}
int pos = uri.indexOf("?");
if (pos != -1) {
uri = uri.substring(0, pos);
}
return uri;
}
public static void sendRedirect(ChannelHandlerContext ctx, String newUri) {
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, FOUND);
response.headers().set(LOCATION, newUri);
// Close the connection as soon as the error message is sent.
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
public void sendError(
ChannelHandlerContext ctx, HttpResponseStatus status, FullHttpRequest request) {
FullHttpResponse response =
new DefaultFullHttpResponse(
HTTP_1_1,
status,
Unpooled.copiedBuffer("Failure: " + status + "\r\n", CharsetUtil.UTF_8));
response.headers().set(CONTENT_TYPE, "text/plain; charset=UTF-8");
// Close the connection as soon as the error message is sent.
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
/**
* When file timestamp is the same as what the browser is sending up, send a "304 Not Modified"
*
* @param ctx Context
*/
public static void sendNotModified(ChannelHandlerContext ctx) {
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, NOT_MODIFIED);
setDateHeader(response);
// Close the connection as soon as the error message is sent.
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
/**
* Sets the Date header for the HTTP response
*
* @param response HTTP response
*/
public static void setDateHeader(FullHttpResponse response) {
SimpleDateFormat dateFormatter = new SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
dateFormatter.setTimeZone(TimeZone.getTimeZone(HTTP_DATE_GMT_TIMEZONE));
Calendar time = new GregorianCalendar();
response.headers().set(DATE, dateFormatter.format(time.getTime()));
}
/**
* Sets the Date and Cache headers for the HTTP Response
*
* @param response HTTP response
* @param fileToCache file to extract content type
*/
public static void setDateAndCacheHeaders(HttpResponse response, File fileToCache) {
SimpleDateFormat dateFormatter = new SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
dateFormatter.setTimeZone(TimeZone.getTimeZone(HTTP_DATE_GMT_TIMEZONE));
// Date header
Calendar time = new GregorianCalendar();
response.headers().set(DATE, dateFormatter.format(time.getTime()));
// Add cache headers
time.add(Calendar.SECOND, HTTP_CACHE_SECONDS);
response.headers().set(EXPIRES, dateFormatter.format(time.getTime()));
response.headers().set(CACHE_CONTROL, "private, max-age=" + HTTP_CACHE_SECONDS);
response
.headers()
.set(LAST_MODIFIED, dateFormatter.format(new Date(fileToCache.lastModified())));
}
protected void contentType(FullHttpRequest request, HttpResponse response, File resource) {
String substr;
String uri = request.getUri();
int dot = uri.lastIndexOf(".");
if (dot < 0) {
substr = resource.toString();
dot = substr.lastIndexOf(".");
} else {
substr = uri;
}
if (dot > 0) {
String ext = substr.substring(dot + 1);
int queryString = ext.indexOf("?");
if (queryString > 0) {
ext.substring(0, queryString);
}
String contentType = MimeType.get(ext, defaultContentType);
response.headers().add(HttpHeaders.Names.CONTENT_TYPE, contentType);
} else {
response.headers().add(HttpHeaders.Names.CONTENT_TYPE, defaultContentType);
}
}
}
public class NetworkDispatcher extends SimpleChannelInboundHandler<Packet>
implements ChannelOutboundHandler {
private static boolean DEBUG_HANDSHAKE =
Boolean.parseBoolean(System.getProperty("fml.debugNetworkHandshake", "false"));
private static enum ConnectionState {
OPENING,
AWAITING_HANDSHAKE,
HANDSHAKING,
HANDSHAKECOMPLETE,
FINALIZING,
CONNECTED;
}
private static enum ConnectionType {
MODDED,
BUKKIT,
VANILLA;
}
public static NetworkDispatcher get(NetworkManager manager) {
return manager.channel().attr(FML_DISPATCHER).get();
}
public static NetworkDispatcher allocAndSet(NetworkManager manager) {
NetworkDispatcher net = new NetworkDispatcher(manager);
manager.channel().attr(FML_DISPATCHER).getAndSet(net);
return net;
}
public static NetworkDispatcher allocAndSet(
NetworkManager manager, ServerConfigurationManager scm) {
NetworkDispatcher net = new NetworkDispatcher(manager, scm);
manager.channel().attr(FML_DISPATCHER).getAndSet(net);
return net;
}
public static final AttributeKey<NetworkDispatcher> FML_DISPATCHER =
AttributeKey.valueOf("fml:dispatcher");
public static final AttributeKey<Boolean> IS_LOCAL = AttributeKey.valueOf("fml:isLocal");
public static final AttributeKey<GameData.GameDataSnapshot> FML_GAMEDATA_SNAPSHOT =
AttributeKey.valueOf("fml:gameDataSnapshot");
public final NetworkManager manager;
private final ServerConfigurationManager scm;
private EntityPlayerMP player;
private ConnectionState state;
private ConnectionType connectionType;
private final Side side;
private final EmbeddedChannel handshakeChannel;
private NetHandlerPlayServer serverHandler;
private INetHandler netHandler;
private Map<String, String> modList;
private int overrideLoginDim;
public NetworkDispatcher(NetworkManager manager) {
super(Packet.class, false);
this.manager = manager;
this.scm = null;
this.side = Side.CLIENT;
this.handshakeChannel =
new EmbeddedChannel(
new HandshakeInjector(this),
new ChannelRegistrationHandler(),
new FMLHandshakeCodec(),
new HandshakeMessageHandler<FMLHandshakeClientState>(FMLHandshakeClientState.class));
this.handshakeChannel.attr(FML_DISPATCHER).set(this);
this.handshakeChannel.attr(NetworkRegistry.CHANNEL_SOURCE).set(Side.SERVER);
this.handshakeChannel.attr(NetworkRegistry.FML_CHANNEL).set("FML|HS");
this.handshakeChannel.attr(IS_LOCAL).set(manager.isLocalChannel());
if (DEBUG_HANDSHAKE) PacketLoggingHandler.register(manager);
}
public NetworkDispatcher(NetworkManager manager, ServerConfigurationManager scm) {
super(Packet.class, false);
this.manager = manager;
this.scm = scm;
this.side = Side.SERVER;
this.handshakeChannel =
new EmbeddedChannel(
new HandshakeInjector(this),
new ChannelRegistrationHandler(),
new FMLHandshakeCodec(),
new HandshakeMessageHandler<FMLHandshakeServerState>(FMLHandshakeServerState.class));
this.handshakeChannel.attr(FML_DISPATCHER).set(this);
this.handshakeChannel.attr(NetworkRegistry.CHANNEL_SOURCE).set(Side.CLIENT);
this.handshakeChannel.attr(NetworkRegistry.FML_CHANNEL).set("FML|HS");
this.handshakeChannel.attr(IS_LOCAL).set(manager.isLocalChannel());
if (DEBUG_HANDSHAKE) PacketLoggingHandler.register(manager);
}
public void serverToClientHandshake(EntityPlayerMP player) {
this.player = player;
insertIntoChannel();
Boolean fml = this.manager.channel().attr(NetworkRegistry.FML_MARKER).get();
if (fml != null && fml.booleanValue()) {
// FML on client, send server hello
// TODO: Make this cleaner as it uses netty magic 0.o
} else {
serverInitiateHandshake();
FMLLog.info("Connection received without FML marker, assuming vanilla.");
this.completeServerSideConnection(ConnectionType.VANILLA);
}
}
protected void setModList(Map<String, String> modList) {
this.modList = modList;
}
private void insertIntoChannel() {
this.manager.channel().config().setAutoRead(false);
// Insert ourselves into the pipeline
this.manager.channel().pipeline().addBefore("packet_handler", "fml:packet_handler", this);
}
public void clientToServerHandshake() {
insertIntoChannel();
}
@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
if (this.state != null) {
FMLLog.getLogger()
.log(
Level.INFO,
"Opening channel which already seems to have a state set. This is a vanilla connection. Handshake handler will stop now");
return;
}
FMLLog.getLogger().log(Level.TRACE, "Handshake channel activating");
this.state = ConnectionState.OPENING;
// send ourselves as a user event, to kick the pipeline active
this.handshakeChannel.pipeline().fireUserEventTriggered(this);
this.manager.channel().config().setAutoRead(true);
}
int serverInitiateHandshake() {
// Send mod salutation to the client
// This will be ignored by vanilla clients
this.state = ConnectionState.AWAITING_HANDSHAKE;
// Need to start the handler here, so we can send custompayload packets
serverHandler =
new NetHandlerPlayServer(scm.getServerInstance(), manager, player) {
/** Updates the JList with a new model. */
@Override
public void update() {
if (NetworkDispatcher.this.state == ConnectionState.FINALIZING) {
completeServerSideConnection(ConnectionType.MODDED);
}
super.update();
}
};
this.netHandler = serverHandler;
// NULL the play server here - we restore it further on. If not, there are packets sent before
// the login
player.playerNetServerHandler = null;
// manually for the manager into the PLAY state, so we can send packets later
this.manager.setConnectionState(EnumConnectionState.PLAY);
// Return the dimension the player is in, so it can be pre-sent to the client in the ServerHello
// v2 packet
// Requires some hackery to the serverconfigmanager and stuff for this to work
NBTTagCompound playerNBT = scm.getPlayerNBT(player);
if (playerNBT != null) {
return playerNBT.getInteger("Dimension");
} else {
return 0;
}
}
void clientListenForServerHandshake() {
manager.setConnectionState(EnumConnectionState.PLAY);
// FMLCommonHandler.instance().waitForPlayClient();
this.netHandler = FMLCommonHandler.instance().getClientPlayHandler();
this.state = ConnectionState.AWAITING_HANDSHAKE;
}
private void completeClientSideConnection(ConnectionType type) {
this.connectionType = type;
FMLLog.info(
"[%s] Client side %s connection established",
Thread.currentThread().getName(), this.connectionType.name().toLowerCase(Locale.ENGLISH));
this.state = ConnectionState.CONNECTED;
FMLCommonHandler.instance()
.bus()
.post(
new FMLNetworkEvent.ClientConnectedToServerEvent(manager, this.connectionType.name()));
}
private synchronized void completeServerSideConnection(ConnectionType type) {
this.connectionType = type;
FMLLog.info(
"[%s] Server side %s connection established",
Thread.currentThread().getName(), this.connectionType.name().toLowerCase(Locale.ENGLISH));
this.state = ConnectionState.CONNECTED;
FMLCommonHandler.instance()
.bus()
.post(new FMLNetworkEvent.ServerConnectionFromClientEvent(manager));
if (DEBUG_HANDSHAKE)
manager.closeChannel(
new ChatComponentText("Handshake Complete review log file for details."));
scm.initializeConnectionToPlayer(manager, player, serverHandler);
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, Packet msg) throws Exception {
boolean handled = false;
if (msg instanceof C17PacketCustomPayload) {
handled = handleServerSideCustomPacket((C17PacketCustomPayload) msg, ctx);
} else if (msg instanceof S3FPacketCustomPayload) {
handled = handleClientSideCustomPacket((S3FPacketCustomPayload) msg, ctx);
} else if (state != ConnectionState.CONNECTED && state != ConnectionState.HANDSHAKECOMPLETE) {
handled = handleVanilla(msg);
}
if (!handled) {
ctx.fireChannelRead(msg);
}
}
private boolean handleVanilla(Packet msg) {
if (state == ConnectionState.AWAITING_HANDSHAKE && msg instanceof S01PacketJoinGame) {
handshakeChannel.pipeline().fireUserEventTriggered(msg);
} else {
FMLLog.info(
"Unexpected packet during modded negotiation - assuming vanilla or keepalives : %s",
msg.getClass().getName());
}
return false;
}
public INetHandler getNetHandler() {
return netHandler;
}
/**
* The mod list returned by this method is in no way reliable because it is provided by the client
*
* @return a map that will contain String keys and values listing all mods and their versions
*/
public Map<String, String> getModList() {
return Collections.unmodifiableMap(modList);
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof ConnectionType && side == Side.SERVER) {
FMLLog.info("Timeout occurred, assuming a vanilla client");
kickVanilla();
}
}
private void kickVanilla() {
kickWithMessage("This is modded. No modded response received. Bye!");
}
private void kickWithMessage(String message) {
final ChatComponentText chatcomponenttext = new ChatComponentText(message);
if (side == Side.CLIENT) {
manager.closeChannel(chatcomponenttext);
} else {
manager.sendPacket(
new S40PacketDisconnect(chatcomponenttext),
new GenericFutureListener<Future<?>>() {
@Override
public void operationComplete(Future<?> result) {
manager.closeChannel(chatcomponenttext);
}
});
}
manager.channel().config().setAutoRead(false);
}
private MultiPartCustomPayload multipart = null;
private boolean handleClientSideCustomPacket(
S3FPacketCustomPayload msg, ChannelHandlerContext context) {
String channelName = msg.getChannelName();
if ("FML|MP".equals(channelName)) {
try {
if (multipart == null) {
multipart = new MultiPartCustomPayload(msg.getBufferData());
} else {
multipart.processPart(msg.getBufferData());
}
} catch (IOException e) {
this.kickWithMessage(e.getMessage());
multipart = null;
return true;
}
if (multipart.isComplete()) {
msg = multipart;
channelName = msg.getChannelName();
multipart = null;
} else {
return true; // Haven't received all so return till we have.
}
}
if ("FML|HS".equals(channelName)
|| "REGISTER".equals(channelName)
|| "UNREGISTER".equals(channelName)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
handshakeChannel.writeInbound(proxy);
// forward any messages into the regular channel
for (Object push : handshakeChannel.inboundMessages()) {
List<FMLProxyPacket> messageResult =
FMLNetworkHandler.forwardHandshake(
(FMLMessage.CompleteHandshake) push, this, Side.CLIENT);
for (FMLProxyPacket result : messageResult) {
result.setTarget(Side.CLIENT);
result.payload().resetReaderIndex();
context.fireChannelRead(result);
}
}
handshakeChannel.inboundMessages().clear();
return true;
} else if (NetworkRegistry.INSTANCE.hasChannel(channelName, Side.CLIENT)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
context.fireChannelRead(proxy);
return true;
}
return false;
}
private boolean handleServerSideCustomPacket(
C17PacketCustomPayload msg, ChannelHandlerContext context) {
if (state == ConnectionState.AWAITING_HANDSHAKE) {
synchronized (this) { // guard from other threads changing the state on us
if (state == ConnectionState.AWAITING_HANDSHAKE) {
state = ConnectionState.HANDSHAKING;
}
}
}
String channelName = msg.getChannelName();
if ("FML|HS".equals(channelName)
|| "REGISTER".equals(channelName)
|| "UNREGISTER".equals(channelName)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
handshakeChannel.writeInbound(proxy);
for (Object push : handshakeChannel.inboundMessages()) {
List<FMLProxyPacket> messageResult =
FMLNetworkHandler.forwardHandshake(
(FMLMessage.CompleteHandshake) push, this, Side.SERVER);
for (FMLProxyPacket result : messageResult) {
result.setTarget(Side.SERVER);
result.payload().resetReaderIndex();
context.fireChannelRead(result);
}
}
handshakeChannel.inboundMessages().clear();
return true;
} else if (NetworkRegistry.INSTANCE.hasChannel(channelName, Side.SERVER)) {
FMLProxyPacket proxy = new FMLProxyPacket(msg);
proxy.setDispatcher(this);
context.fireChannelRead(proxy);
return true;
}
return false;
}
public void sendProxy(FMLProxyPacket msg) {
manager.sendPacket(msg);
}
public void rejectHandshake(String result) {
kickWithMessage(result);
}
@Override
public void bind(ChannelHandlerContext ctx, SocketAddress localAddress, ChannelPromise promise)
throws Exception {
ctx.bind(localAddress, promise);
}
@Override
public void connect(
ChannelHandlerContext ctx,
SocketAddress remoteAddress,
SocketAddress localAddress,
ChannelPromise promise)
throws Exception {
ctx.connect(remoteAddress, localAddress, promise);
}
@Override
public void disconnect(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
if (side == Side.CLIENT) {
FMLCommonHandler.instance()
.bus()
.post(new FMLNetworkEvent.ClientDisconnectionFromServerEvent(manager));
} else {
FMLCommonHandler.instance()
.bus()
.post(new FMLNetworkEvent.ServerDisconnectionFromClientEvent(manager));
}
cleanAttributes(ctx);
ctx.disconnect(promise);
}
@Override
public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
if (side == Side.CLIENT) {
FMLCommonHandler.instance()
.bus()
.post(new FMLNetworkEvent.ClientDisconnectionFromServerEvent(manager));
} else {
FMLCommonHandler.instance()
.bus()
.post(new FMLNetworkEvent.ServerDisconnectionFromClientEvent(manager));
}
cleanAttributes(ctx);
ctx.close(promise);
}
@Override
@Deprecated
public void deregister(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
ctx.deregister(promise);
}
@Override
public void read(ChannelHandlerContext ctx) throws Exception {
ctx.read();
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
throws Exception {
if (msg instanceof FMLProxyPacket) {
if (side == Side.CLIENT) {
// Client to server large packets are not supported to prevent client being bad.
ctx.write(((FMLProxyPacket) msg).toC17Packet(), promise);
} else {
List<Packet> parts = ((FMLProxyPacket) msg).toS3FPackets();
for (Packet pkt : parts) {
ctx.write(pkt, promise);
}
}
} else {
ctx.write(msg, promise);
}
}
@Override
public void flush(ChannelHandlerContext ctx) throws Exception {
ctx.flush();
}
public void completeHandshake(Side target) {
if (state == ConnectionState.CONNECTED) {
FMLLog.severe("Attempt to double complete the network connection!");
throw new FMLNetworkException("Attempt to double complete!");
}
if (side == Side.CLIENT) {
completeClientSideConnection(ConnectionType.MODDED);
} else {
this.state = ConnectionState.FINALIZING; // Delay and finalize in the world tick loop.
}
}
public void completeClientHandshake() {
state = ConnectionState.HANDSHAKECOMPLETE;
}
public void abortClientHandshake(String type) {
FMLLog.log(Level.INFO, "Aborting client handshake \"%s\"", type);
// FMLCommonHandler.instance().waitForPlayClient();
completeClientSideConnection(ConnectionType.valueOf(type));
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
// Stop the epic channel closed spam at close
if (!(cause instanceof ClosedChannelException)) {
FMLLog.log(Level.ERROR, cause, "NetworkDispatcher exception");
}
super.exceptionCaught(ctx, cause);
}
// if we add any attributes, we should force removal of them here so that
// they do not hold references to the world and causes it to leak.
private void cleanAttributes(ChannelHandlerContext ctx) {
ctx.channel().attr(FMLOutboundHandler.FML_MESSAGETARGETARGS).remove();
ctx.channel().attr(NetworkRegistry.NET_HANDLER).remove();
ctx.channel().attr(NetworkDispatcher.FML_DISPATCHER).remove();
this.handshakeChannel.attr(FML_DISPATCHER).remove();
this.manager.channel().attr(FML_DISPATCHER).remove();
}
public void setOverrideDimension(int overrideDim) {
this.overrideLoginDim = overrideDim;
FMLLog.fine("Received override dimension %d", overrideDim);
}
public int getOverrideDimension(S01PacketJoinGame packetIn) {
FMLLog.fine("Overriding dimension: using %d", this.overrideLoginDim);
return this.overrideLoginDim != 0 ? this.overrideLoginDim : packetIn.getDimension();
}
private class MultiPartCustomPayload extends S3FPacketCustomPayload {
private String channel;
private byte[] data;
private PacketBuffer data_buf = null;
private int part_count = 0;
private int part_expected = 0;
private int offset = 0;
private MultiPartCustomPayload(PacketBuffer preamble) throws IOException {
channel = preamble.readStringFromBuffer(20);
part_count = preamble.readUnsignedByte();
int length = preamble.readInt();
if (length <= 0 || length >= FMLProxyPacket.MAX_LENGTH) {
throw new IOException(
"The received FML MultiPart packet outside of valid length bounds, Max: "
+ FMLProxyPacket.MAX_LENGTH
+ ", Received: "
+ length);
}
data = new byte[length];
data_buf = new PacketBuffer(Unpooled.wrappedBuffer(data));
}
public void processPart(PacketBuffer input) throws IOException {
int part = (int) (input.readByte() & 0xFF);
if (part != part_expected) {
throw new IOException(
"Received FML MultiPart packet out of order, Expected "
+ part_expected
+ " Got "
+ part);
}
int len = input.readableBytes() - 1;
input.readBytes(data, offset, len);
part_expected++;
offset += len;
}
public boolean isComplete() {
return part_expected == part_count;
}
@Override
public String getChannelName() // getChannel
{
return this.channel;
}
@Override
public PacketBuffer getBufferData() // getData
{
return this.data_buf;
}
}
}
public class NetworkManager extends SimpleChannelInboundHandler {
private static final Logger logger = LogManager.getLogger();
public static final Marker logMarkerNetwork = MarkerManager.getMarker("NETWORK");
public static final Marker logMarkerPackets =
MarkerManager.getMarker("NETWORK_PACKETS", logMarkerNetwork);
public static final AttributeKey attrKeyConnectionState = AttributeKey.valueOf("protocol");
public static final LazyLoadBase CLIENT_NIO_EVENTLOOP =
new LazyLoadBase() {
protected NioEventLoopGroup genericLoad() {
return new NioEventLoopGroup(
0,
(new ThreadFactoryBuilder())
.setNameFormat("Netty Client IO #%d")
.setDaemon(true)
.build());
}
protected Object load() {
return this.genericLoad();
}
};
public static final LazyLoadBase CLIENT_LOCAL_EVENTLOOP =
new LazyLoadBase() {
protected LocalEventLoopGroup genericLoad() {
return new LocalEventLoopGroup(
0,
(new ThreadFactoryBuilder())
.setNameFormat("Netty Local Client IO #%d")
.setDaemon(true)
.build());
}
protected Object load() {
return this.genericLoad();
}
};
private final EnumPacketDirection direction;
/** The queue for packets that require transmission */
private final Queue outboundPacketsQueue = Queues.newConcurrentLinkedQueue();
/** The active channel */
private Channel channel;
/** The address of the remote party */
private SocketAddress socketAddress;
/** The INetHandler instance responsible for processing received packets */
private INetHandler packetListener;
/** A String indicating why the network has shutdown. */
private IChatComponent terminationReason;
private boolean isEncrypted;
private boolean disconnected;
public NetworkManager(EnumPacketDirection packetDirection) {
this.direction = packetDirection;
}
public void channelActive(ChannelHandlerContext p_channelActive_1_) throws Exception {
super.channelActive(p_channelActive_1_);
this.channel = p_channelActive_1_.channel();
this.socketAddress = this.channel.remoteAddress();
try {
this.setConnectionState(EnumConnectionState.HANDSHAKING);
} catch (Throwable var3) {
logger.fatal(var3);
}
}
/** Sets the new connection state and registers which packets this channel may send and receive */
public void setConnectionState(EnumConnectionState newState) {
this.channel.attr(attrKeyConnectionState).set(newState);
this.channel.config().setAutoRead(true);
logger.debug("Enabled auto read");
}
public void channelInactive(ChannelHandlerContext p_channelInactive_1_) {
this.closeChannel(new ChatComponentTranslation("disconnect.endOfStream", new Object[0]));
}
public void exceptionCaught(
ChannelHandlerContext p_exceptionCaught_1_, Throwable p_exceptionCaught_2_) {
logger.debug("Disconnecting " + this.getRemoteAddress(), p_exceptionCaught_2_);
this.closeChannel(
new ChatComponentTranslation(
"disconnect.genericReason",
new Object[] {"Internal Exception: " + p_exceptionCaught_2_}));
}
protected void channelRead0(ChannelHandlerContext p_channelRead0_1_, Packet p_channelRead0_2_) {
ReadPacketEvent event = new ReadPacketEvent(p_channelRead0_2_);
XIV.getInstance().getListenerManager().call(event);
if (event.isCancelled()) return;
p_channelRead0_2_ = event.getPacket();
if (this.channel.isOpen()) {
try {
p_channelRead0_2_.processPacket(this.packetListener);
} catch (ThreadQuickExitException var4) {;
}
}
}
/**
* Sets the NetHandler for this NetworkManager, no checks are made if this handler is suitable for
* the particular connection state (protocol)
*/
public void setNetHandler(INetHandler handler) {
Validate.notNull(handler, "packetListener", new Object[0]);
logger.debug("Set listener of {} to {}", new Object[] {this, handler});
this.packetListener = handler;
}
public void sendPacket(Packet packetIn) {
if (this.channel != null && this.channel.isOpen()) {
this.flushOutboundQueue();
this.dispatchPacket(packetIn, (GenericFutureListener[]) null);
} else {
this.outboundPacketsQueue.add(
new NetworkManager.InboundHandlerTuplePacketListener(
packetIn, (GenericFutureListener[]) null));
}
}
public void sendPacket(
Packet packetIn, GenericFutureListener listener, GenericFutureListener... listeners) {
if (this.channel != null && this.channel.isOpen()) {
this.flushOutboundQueue();
this.dispatchPacket(
packetIn, (GenericFutureListener[]) ArrayUtils.add(listeners, 0, listener));
} else {
this.outboundPacketsQueue.add(
new NetworkManager.InboundHandlerTuplePacketListener(
packetIn, (GenericFutureListener[]) ArrayUtils.add(listeners, 0, listener)));
}
}
/**
* Will commit the packet to the channel. If the current thread 'owns' the channel it will write
* and flush the packet, otherwise it will add a task for the channel eventloop thread to do that.
*/
private void dispatchPacket(
final Packet inPacket, final GenericFutureListener[] futureListeners) {
final EnumConnectionState var3 = EnumConnectionState.getFromPacket(inPacket);
final EnumConnectionState var4 =
(EnumConnectionState) this.channel.attr(attrKeyConnectionState).get();
if (var4 != var3) {
logger.debug("Disabled auto read");
this.channel.config().setAutoRead(false);
}
if (this.channel.eventLoop().inEventLoop()) {
if (var3 != var4) {
this.setConnectionState(var3);
}
ChannelFuture var5 = this.channel.writeAndFlush(inPacket);
if (futureListeners != null) {
var5.addListeners(futureListeners);
}
var5.addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
} else {
this.channel
.eventLoop()
.execute(
new Runnable() {
public void run() {
if (var3 != var4) {
NetworkManager.this.setConnectionState(var3);
}
ChannelFuture var1 = NetworkManager.this.channel.writeAndFlush(inPacket);
if (futureListeners != null) {
var1.addListeners(futureListeners);
}
var1.addListener(ChannelFutureListener.FIRE_EXCEPTION_ON_FAILURE);
}
});
}
}
/** Will iterate through the outboundPacketQueue and dispatch all Packets */
private void flushOutboundQueue() {
if (this.channel != null && this.channel.isOpen()) {
while (!this.outboundPacketsQueue.isEmpty()) {
NetworkManager.InboundHandlerTuplePacketListener var1 =
(NetworkManager.InboundHandlerTuplePacketListener) this.outboundPacketsQueue.poll();
this.dispatchPacket(var1.packet, var1.futureListeners);
}
}
}
/** Checks timeouts and processes all packets received */
public void processReceivedPackets() {
this.flushOutboundQueue();
if (this.packetListener instanceof IUpdatePlayerListBox) {
((IUpdatePlayerListBox) this.packetListener).update();
}
this.channel.flush();
}
/** Returns the socket address of the remote side. Server-only. */
public SocketAddress getRemoteAddress() {
return this.socketAddress;
}
/**
* Closes the channel, the parameter can be used for an exit message (not certain how it gets
* sent)
*/
public void closeChannel(IChatComponent message) {
if (this.channel.isOpen()) {
this.channel.close().awaitUninterruptibly();
this.terminationReason = message;
}
}
/**
* True if this NetworkManager uses a memory connection (single player game). False may imply both
* an active TCP connection or simply no active connection at all
*/
public boolean isLocalChannel() {
return this.channel instanceof LocalChannel || this.channel instanceof LocalServerChannel;
}
/**
* Prepares a clientside NetworkManager: establishes a connection to the address and port supplied
* and configures the channel pipeline. Returns the newly created instance.
*/
public static NetworkManager provideLanClient(InetAddress p_150726_0_, int p_150726_1_) {
final NetworkManager var2 = new NetworkManager(EnumPacketDirection.CLIENTBOUND);
((Bootstrap)
((Bootstrap)
((Bootstrap)
(new Bootstrap())
.group((EventLoopGroup) CLIENT_NIO_EVENTLOOP.getValue()))
.handler(
new ChannelInitializer() {
protected void initChannel(Channel p_initChannel_1_) {
try {
p_initChannel_1_
.config()
.setOption(ChannelOption.IP_TOS, Integer.valueOf(24));
} catch (ChannelException var4) {;
}
try {
p_initChannel_1_
.config()
.setOption(ChannelOption.TCP_NODELAY, Boolean.valueOf(false));
} catch (ChannelException var3) {;
}
p_initChannel_1_
.pipeline()
.addLast("timeout", new ReadTimeoutHandler(20))
.addLast("splitter", new MessageDeserializer2())
.addLast(
"decoder",
new MessageDeserializer(EnumPacketDirection.CLIENTBOUND))
.addLast("prepender", new MessageSerializer2())
.addLast(
"encoder",
new MessageSerializer(EnumPacketDirection.SERVERBOUND))
.addLast("packet_handler", var2);
}
}))
.channel(NioSocketChannel.class))
.connect(p_150726_0_, p_150726_1_)
.syncUninterruptibly();
return var2;
}
/**
* Prepares a clientside NetworkManager: establishes a connection to the socket supplied and
* configures the channel pipeline. Returns the newly created instance.
*/
public static NetworkManager provideLocalClient(SocketAddress p_150722_0_) {
final NetworkManager var1 = new NetworkManager(EnumPacketDirection.CLIENTBOUND);
((Bootstrap)
((Bootstrap)
((Bootstrap)
(new Bootstrap())
.group((EventLoopGroup) CLIENT_LOCAL_EVENTLOOP.getValue()))
.handler(
new ChannelInitializer() {
protected void initChannel(Channel p_initChannel_1_) {
p_initChannel_1_.pipeline().addLast("packet_handler", var1);
}
}))
.channel(LocalChannel.class))
.connect(p_150722_0_)
.syncUninterruptibly();
return var1;
}
/**
* Adds an encoder+decoder to the channel pipeline. The parameter is the secret key used for
* encrypted communication
*/
public void enableEncryption(SecretKey key) {
this.isEncrypted = true;
this.channel
.pipeline()
.addBefore(
"splitter", "decrypt", new NettyEncryptingDecoder(CryptManager.func_151229_a(2, key)));
this.channel
.pipeline()
.addBefore(
"prepender", "encrypt", new NettyEncryptingEncoder(CryptManager.func_151229_a(1, key)));
}
public boolean func_179292_f() {
return this.isEncrypted;
}
/** Returns true if this NetworkManager has an active channel, false otherwise */
public boolean isChannelOpen() {
return this.channel != null && this.channel.isOpen();
}
public boolean hasNoChannel() {
return this.channel == null;
}
/** Gets the current handler for processing packets */
public INetHandler getNetHandler() {
return this.packetListener;
}
/** If this channel is closed, returns the exit message, null otherwise. */
public IChatComponent getExitMessage() {
return this.terminationReason;
}
/** Switches the channel to manual reading modus */
public void disableAutoRead() {
this.channel.config().setAutoRead(false);
}
public void setCompressionTreshold(int treshold) {
if (treshold >= 0) {
if (this.channel.pipeline().get("decompress") instanceof NettyCompressionDecoder) {
((NettyCompressionDecoder) this.channel.pipeline().get("decompress"))
.setCompressionTreshold(treshold);
} else {
this.channel
.pipeline()
.addBefore("decoder", "decompress", new NettyCompressionDecoder(treshold));
}
if (this.channel.pipeline().get("compress") instanceof NettyCompressionEncoder) {
((NettyCompressionEncoder) this.channel.pipeline().get("decompress"))
.setCompressionTreshold(treshold);
} else {
this.channel
.pipeline()
.addBefore("encoder", "compress", new NettyCompressionEncoder(treshold));
}
} else {
if (this.channel.pipeline().get("decompress") instanceof NettyCompressionDecoder) {
this.channel.pipeline().remove("decompress");
}
if (this.channel.pipeline().get("compress") instanceof NettyCompressionEncoder) {
this.channel.pipeline().remove("compress");
}
}
}
public void checkDisconnected() {
if (!this.hasNoChannel() && !this.isChannelOpen() && !this.disconnected) {
this.disconnected = true;
if (this.getExitMessage() != null) {
this.getNetHandler().onDisconnect(this.getExitMessage());
} else if (this.getNetHandler() != null) {
this.getNetHandler().onDisconnect(new ChatComponentText("Disconnected"));
}
}
}
protected void channelRead0(ChannelHandlerContext p_channelRead0_1_, Object p_channelRead0_2_) {
this.channelRead0(p_channelRead0_1_, (Packet) p_channelRead0_2_);
}
static class InboundHandlerTuplePacketListener {
private final Packet packet;
private final GenericFutureListener[] futureListeners;
public InboundHandlerTuplePacketListener(
Packet inPacket, GenericFutureListener... inFutureListeners) {
this.packet = inPacket;
this.futureListeners = inFutureListeners;
}
}
}