Support Bungeecord IP forwarding

src/com/loohp/limbo/Console.java

@@ -9,6 +9,7 @@ import java.io.PrintStream;
 import java.text.SimpleDateFormat;
 import java.util.Arrays;
 import java.util.Date;
+import java.util.Locale;
 
 import com.loohp.limbo.Player.Player;
 import com.loohp.limbo.Utils.CustomStringUtils;
@@ -67,10 +68,76 @@ public class Console {
 	
 	public class ConsoleOutputStream extends PrintStream {
 		
-	    public ConsoleOutputStream(OutputStream out) {
+		public ConsoleOutputStream(OutputStream out) {
 	        super(out);
 	    }
 
+		@Override
+		public PrintStream printf(Locale l, String format, Object... args) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+			return super.printf(l, "[" + date + "] " + format, args);
+		}
+
+		@Override
+		public PrintStream printf(String format, Object... args) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+			return super.printf("[" + date + "] " + format, args);
+		}
+
+		@Override
+		public void println() {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] ");
+		}
+
+		@Override
+		public void println(boolean x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(char x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(char[] x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + String.valueOf(x));
+		}
+
+		@Override
+		public void println(double x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(float x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(int x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(long x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
+		@Override
+		public void println(Object x) {
+			String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());
+	        super.println("[" + date + "] " + x);
+		}
+
 	    @Override
 	    public void println(String string) {
 	    	String date = new SimpleDateFormat("HH':'mm':'ss").format(new Date());

src/com/loohp/limbo/File/ServerProperties.java

@@ -33,6 +33,7 @@ public class ServerProperties {
 	String motdJson;
 	String versionString;
 	int protocol;
+	boolean bungeecord;
 	
 	Optional<BufferedImage> favicon;
 
@@ -63,6 +64,7 @@ public class ServerProperties {
 		allowFlight = Boolean.parseBoolean(prop.getProperty("allow-flight"));
 		motdJson = prop.getProperty("motd");
 		versionString = prop.getProperty("version");
+		bungeecord = Boolean.parseBoolean(prop.getProperty("bungeecord"));
 		
 		File png = new File("server-icon.png");
 		if (png.exists()) {
@@ -84,6 +86,10 @@ public class ServerProperties {
 		System.out.println("Loaded server.properties");
 	}
 
+	public boolean isBungeecord() {
+		return bungeecord;
+	}
+
 	public Optional<BufferedImage> getFavicon() {
 		return favicon;
 	}

src/com/loohp/limbo/Limbo.java

@@ -215,7 +215,7 @@ public class Limbo {
 		base = base.replace("%PROTOCOL%", String.valueOf(properties.getProtocol()));
 		base = base.replace("%MOTD%", properties.getMotdJson());
 		base = base.replace("%MAXPLAYERS%", String.valueOf(properties.getMaxPlayers()));
-		base = base.replace("%ONLINECLIENTS%", String.valueOf(server.getClients().size()));
+		base = base.replace("%ONLINECLIENTS%", String.valueOf(getPlayers().size()));
 		
 		if (properties.getFavicon().isPresent()) {
 			String icon = "\"favicon\":\"data:image/png;base64," + ImageUtils.imgToBase64String(properties.getFavicon().get(), "png") + "\",";

src/com/loohp/limbo/Server/ClientConnection.java

@@ -3,6 +3,7 @@ package com.loohp.limbo.Server;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
+import java.net.InetAddress;
 import java.net.Socket;
 import java.nio.charset.StandardCharsets;
 import java.util.Optional;
@@ -16,6 +17,7 @@ import com.loohp.limbo.Player.Player;
 import com.loohp.limbo.Server.Packets.Packet;
 import com.loohp.limbo.Server.Packets.PacketHandshakingIn;
 import com.loohp.limbo.Server.Packets.PacketLoginInLoginStart;
+import com.loohp.limbo.Server.Packets.PacketLoginOutDisconnect;
 import com.loohp.limbo.Server.Packets.PacketLoginOutLoginSuccess;
 import com.loohp.limbo.Server.Packets.PacketOut;
 import com.loohp.limbo.Server.Packets.PacketPlayInChat;
@@ -42,8 +44,8 @@ import com.loohp.limbo.Server.Packets.PacketStatusOutPong;
 import com.loohp.limbo.Server.Packets.PacketStatusOutResponse;
 import com.loohp.limbo.Utils.CustomStringUtils;
 import com.loohp.limbo.Utils.DataTypeIO;
-import com.loohp.limbo.Utils.SkinUtils;
-import com.loohp.limbo.Utils.SkinUtils.SkinResponse;
+import com.loohp.limbo.Utils.MojangAPIUtils;
+import com.loohp.limbo.Utils.MojangAPIUtils.SkinResponse;
 import com.loohp.limbo.World.BlockPosition;
 import com.loohp.limbo.World.DimensionRegistry;
 import com.loohp.limbo.World.World;
@@ -73,10 +75,17 @@ public class ClientConnection extends Thread {
 	
 	private DataOutputStream output;
 	
+	private InetAddress iNetAddress;
+	
     public ClientConnection(Socket client_socket) {
         this.client_socket = client_socket;
+        this.iNetAddress = client_socket.getInetAddress();
     }
 	
+	public InetAddress getiNetAddress() {
+		return iNetAddress;
+	}
+
 	public long getLastKeepAlivePayLoad() {
 		return lastKeepAlivePayLoad;
 	}
@@ -124,6 +133,23 @@ public class ClientConnection extends Thread {
 		}
 	}
 	
+	public void disconnectDuringLogin(BaseComponent[] reason) {
+		try {
+			PacketLoginOutDisconnect packet = new PacketLoginOutDisconnect(ComponentSerializer.toString(reason));
+			byte[] packetByte = packet.serializePacket();
+			DataTypeIO.writeVarInt(output, packetByte.length);
+			output.write(packetByte);
+			output.flush();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		try {
+			client_socket.close();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
 	@Override
     public void run() {
         running = true;
@@ -133,8 +159,17 @@ public class ClientConnection extends Thread {
     		DataInputStream input = new DataInputStream(client_socket.getInputStream());
     		output = new DataOutputStream(client_socket.getOutputStream());
 		    DataTypeIO.readVarInt(input);
-		    int handShakeId = DataTypeIO.readVarInt(input);
-		    PacketHandshakingIn handshake = (PacketHandshakingIn) Packet.getHandshakeIn().get(handShakeId).getConstructor(DataInputStream.class).newInstance(input);
+		    
+		    //int handShakeId = DataTypeIO.readVarInt(input);
+		    DataTypeIO.readVarInt(input);
+		    
+		    PacketHandshakingIn handshake = new PacketHandshakingIn(input);
+		    
+		    boolean isBungeecord = Limbo.getInstance().getServerProperties().isBungeecord();		    
+		    String bungeeForwarding = handshake.getServerAddress();
+		    UUID bungeeUUID = null;
+		    SkinResponse bungeeSkin = null;
+		    
 		    switch (handshake.getHandshakeType()) {
 		    case STATUS:
 				state = ClientState.STATUS;
@@ -146,7 +181,7 @@ public class ClientConnection extends Thread {
 						//do nothing
 					} else if (packetType.equals(PacketStatusInRequest.class)) {
 						String str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort();
-						System.out.println("[/" + str + "] <-> InitialHandler has pinged");
+						Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Handshake Status has pinged");
 						PacketStatusOutResponse packet = new PacketStatusOutResponse(Limbo.getInstance().getServerListResponseJson());
 						sendPacket(packet);
 					} else if (packetType.equals(PacketStatusInPing.class)) {
@@ -159,6 +194,27 @@ public class ClientConnection extends Thread {
 				break;
 			case LOGIN:
 				state = ClientState.LOGIN;
+				
+				if (isBungeecord) {
+					try {
+				    	String[] data = bungeeForwarding.split("\\x00");
+				    	//String host = data[0];
+				    	String ip = data[1];
+				    	
+				    	bungeeUUID = UUID.fromString(data[2].replaceFirst("([0-9a-fA-F]{8})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]+)", "$1-$2-$3-$4-$5"));
+				    	iNetAddress = InetAddress.getByName(ip);
+				    	
+				    	String skinJson = data[3];
+				    	
+				    	String skin = skinJson.split("\"value\":\"")[1].split("\"")[0];
+			            String signature = skinJson.split("\"signature\":\"")[1].split("\"")[0];
+				    	bungeeSkin = new SkinResponse(skin, signature);
+					} catch (Exception e) {
+						Limbo.getInstance().getConsole().sendMessage("If you wish to use bungeecord's IP forwarding, please enable that in your bungeecord config.yml as well!");
+						disconnectDuringLogin(new BaseComponent[] {new TextComponent(ChatColor.RED + "Please connect from the proxy!")});
+					}
+			    }
+				
 				while (client_socket.isConnected()) {
 					int size = DataTypeIO.readVarInt(input);
 					int packetId = DataTypeIO.readVarInt(input);
@@ -169,7 +225,8 @@ public class ClientConnection extends Thread {
 					} else if (packetType.equals(PacketLoginInLoginStart.class)) {
 						PacketLoginInLoginStart start = new PacketLoginInLoginStart(input);
 						String username = start.getUsername();
-						UUID uuid = UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(StandardCharsets.UTF_8));
+						UUID uuid = isBungeecord ? bungeeUUID : UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(StandardCharsets.UTF_8));
+						
 						PacketLoginOutLoginSuccess success = new PacketLoginOutLoginSuccess(uuid, username);
 						sendPacket(success);
 						
@@ -216,7 +273,7 @@ public class ClientConnection extends Thread {
 				player.setLocation(new Location(world, s.getX(), s.getY(), s.getZ(), s.getYaw(), s.getPitch()));
 				sendPacket(positionLook);
 				
-				SkinResponse skinresponce = SkinUtils.getSkinFromMojangServer(player.getName());
+				SkinResponse skinresponce = isBungeecord ? bungeeSkin : MojangAPIUtils.getSkinFromMojangServer(player.getName());
 				PlayerSkinProperty skin = skinresponce != null ? new PlayerSkinProperty(skinresponce.getSkin(), skinresponce.getSignature()) : null;
 				PacketPlayOutPlayerInfo info = new PacketPlayOutPlayerInfo(PlayerInfoAction.ADD_PLAYER, player.getUUID(), new PlayerInfoData.PlayerInfoDataAddPlayer(player.getName(), Optional.ofNullable(skin), p.getDefaultGamemode(), 0, false, Optional.empty()));
 				sendPacket(info);
@@ -240,7 +297,7 @@ public class ClientConnection extends Thread {
 				sendPacket(abilities);
 				
 				String str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort() + "|" + player.getName();
-				System.out.println("[/" + str + "] <-> Player had connected to the Limbo server!");
+				Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Player had connected to the Limbo server!");
 				
 				while (client_socket.isConnected()) {
 					try {						
@@ -272,7 +329,7 @@ public class ClientConnection extends Thread {
 						} else if (packetType.equals(PacketPlayInKeepAlive.class)) {
 							PacketPlayInKeepAlive alive = new PacketPlayInKeepAlive(input);
 							if (alive.getPayload() != lastKeepAlivePayLoad) {
-								System.out.println("Incorrect Payload recieved in KeepAlive packet for player " + player.getName());
+								Limbo.getInstance().getConsole().sendMessage("Incorrect Payload recieved in KeepAlive packet for player " + player.getName());
 								break;
 							}
 						} else if (packetType.equals(PacketPlayInChat.class)) {
@@ -299,7 +356,7 @@ public class ClientConnection extends Thread {
 					}
 	    		}
 				str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort() + "|" + player.getName();
-				System.out.println("[/" + str + "] <-> Player had disconnected!");
+				Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Player had disconnected!");
 	    	}
 		    
     	} catch (Exception e) {}

src/com/loohp/limbo/Server/Packets/PacketLoginInPluginMessaging.java

@@ -0,0 +1,43 @@
+package com.loohp.limbo.Server.Packets;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import com.loohp.limbo.Utils.DataTypeIO;
+import com.loohp.limbo.Utils.NamespacedKey;
+
+public class PacketLoginInPluginMessaging extends PacketIn {
+
+	private int messageId;
+	private NamespacedKey channel;
+	private byte[] data;
+
+	public PacketLoginInPluginMessaging(int messageId, NamespacedKey channel, byte[] data) {
+		this.messageId = messageId;
+		this.channel = channel;
+		this.data = data;
+	}
+	
+	public PacketLoginInPluginMessaging(DataInputStream in, int packetLength, int packetId) throws IOException {
+		messageId = DataTypeIO.readVarInt(in);
+		String rawChannel = DataTypeIO.readString(in);
+		channel = new NamespacedKey(rawChannel);
+		int dataLength = packetLength - DataTypeIO.getVarIntLength(packetId) - DataTypeIO.getVarIntLength(messageId) - DataTypeIO.getStringLength(rawChannel, StandardCharsets.UTF_8);
+		data = new byte[dataLength];
+		in.read(data);
+	}
+	
+	public int getMessageId() {
+		return messageId;
+	}
+
+	public NamespacedKey getChannel() {
+		return channel;
+	}
+
+	public byte[] getData() {
+		return data;
+	}
+
+}

src/com/loohp/limbo/Server/Packets/PacketLoginOutPluginMessaging.java

@@ -0,0 +1,48 @@
+package com.loohp.limbo.Server.Packets;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import com.loohp.limbo.Utils.DataTypeIO;
+import com.loohp.limbo.Utils.NamespacedKey;
+
+public class PacketLoginOutPluginMessaging extends PacketOut {
+
+	private int messageId;
+	private NamespacedKey channel;
+	private byte[] data;
+
+	public PacketLoginOutPluginMessaging(int messageId, NamespacedKey channel, byte[] data) {
+		this.messageId = messageId;
+		this.channel = channel;
+		this.data = data;
+	}
+	
+	public int getMessageId() {
+		return messageId;
+	}
+
+	public NamespacedKey getChannel() {
+		return channel;
+	}
+
+	public byte[] getData() {
+		return data;
+	}
+
+	@Override
+	public byte[] serializePacket() throws IOException {
+		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+		
+		DataOutputStream output = new DataOutputStream(buffer);
+		output.writeByte(Packet.getLoginOut().get(getClass()));
+		DataTypeIO.writeVarInt(output, messageId);
+		DataTypeIO.writeString(output, channel.toString(), StandardCharsets.UTF_8);
+		output.write(data);
+		
+		return buffer.toByteArray();
+	}
+
+}

src/com/loohp/limbo/Server/Packets/PacketPlayInPluginMessaging.java

@@ -0,0 +1,36 @@
+package com.loohp.limbo.Server.Packets;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import com.loohp.limbo.Utils.DataTypeIO;
+import com.loohp.limbo.Utils.NamespacedKey;
+
+public class PacketPlayInPluginMessaging extends PacketIn {
+
+	private NamespacedKey channel;
+	private byte[] data;
+
+	public PacketPlayInPluginMessaging(NamespacedKey channel, byte[] data) {
+		this.channel = channel;
+		this.data = data;
+	}
+	
+	public PacketPlayInPluginMessaging(DataInputStream in, int packetLength, int packetId) throws IOException {
+		String rawChannel = DataTypeIO.readString(in);
+		channel = new NamespacedKey(rawChannel);
+		int dataLength = packetLength - DataTypeIO.getVarIntLength(packetId) - DataTypeIO.getStringLength(rawChannel, StandardCharsets.UTF_8);
+		data = new byte[dataLength];
+		in.read(data);
+	}
+
+	public NamespacedKey getChannel() {
+		return channel;
+	}
+
+	public byte[] getData() {
+		return data;
+	}
+
+}

src/com/loohp/limbo/Server/Packets/PacketPlayOutPluginMessaging.java

@@ -0,0 +1,41 @@
+package com.loohp.limbo.Server.Packets;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+import com.loohp.limbo.Utils.DataTypeIO;
+import com.loohp.limbo.Utils.NamespacedKey;
+
+public class PacketPlayOutPluginMessaging extends PacketOut {
+
+	private NamespacedKey channel;
+	private byte[] data;
+
+	public PacketPlayOutPluginMessaging(NamespacedKey channel, byte[] data) {
+		this.channel = channel;
+		this.data = data;
+	}
+
+	public NamespacedKey getChannel() {
+		return channel;
+	}
+
+	public byte[] getData() {
+		return data;
+	}
+
+	@Override
+	public byte[] serializePacket() throws IOException {
+		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
+		
+		DataOutputStream output = new DataOutputStream(buffer);
+		output.writeByte(Packet.getPlayOut().get(getClass()));
+		DataTypeIO.writeString(output, channel.toString(), StandardCharsets.UTF_8);
+		output.write(data);
+		
+		return buffer.toByteArray();
+	}
+
+}

src/com/loohp/limbo/Utils/BungeeLoginMessageUtils.java

@@ -0,0 +1,58 @@
+package com.loohp.limbo.Utils;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.UUID;
+
+import com.google.common.io.ByteArrayDataInput;
+import com.google.common.io.ByteArrayDataOutput;
+import com.google.common.io.ByteStreams;
+import com.loohp.limbo.Server.Packets.PacketPlayOutPluginMessaging;
+
+public class BungeeLoginMessageUtils {
+
+	public static void sendUUIDRequest(DataOutputStream output) throws IOException {
+		ByteArrayDataOutput out = ByteStreams.newDataOutput();
+		out.writeUTF("UUID");
+		
+		PacketPlayOutPluginMessaging packet = new PacketPlayOutPluginMessaging(new NamespacedKey("bungeecord", "main"), out.toByteArray());
+		byte[] packetByte = packet.serializePacket();
+		DataTypeIO.writeVarInt(output, packetByte.length);
+		output.write(packetByte);
+	}
+	
+	public static UUID readUUIDResponse(byte[] data) {
+		ByteArrayDataInput in = ByteStreams.newDataInput(data);
+	    String subchannel = in.readUTF();
+	    if (subchannel.equals("UUID")) {
+	    	return UUID.fromString(in.readUTF());
+	    } else {
+	    	throw new RuntimeException("Bungeecord Message receieved is not an IP");
+	    }
+	}
+	
+	public static void sendIPRequest(DataOutputStream output) throws IOException {
+		ByteArrayDataOutput out = ByteStreams.newDataOutput();
+		out.writeUTF("IP");
+		
+		PacketPlayOutPluginMessaging packet = new PacketPlayOutPluginMessaging(new NamespacedKey("bungeecord", "main"), out.toByteArray());
+		byte[] packetByte = packet.serializePacket();
+		DataTypeIO.writeVarInt(output, packetByte.length);
+		output.write(packetByte);
+	}
+	
+	public static InetAddress readIPResponse(byte[] data) throws UnknownHostException {
+		ByteArrayDataInput in = ByteStreams.newDataInput(data);
+	    String subchannel = in.readUTF();
+	    if (subchannel.equals("IP")) {
+	    	String ip = in.readUTF();
+	    	in.readInt();
+	    	return InetAddress.getByName(ip);
+	    } else {
+	    	throw new RuntimeException("Bungeecord Message receieved is not an IP");
+	    }
+	}
+
+}

src/com/loohp/limbo/Utils/DataTypeIO.java

@@ -40,6 +40,11 @@ public class DataTypeIO {
 	    return new String(b);
 	}
 	
+	public static int getStringLength(String string, Charset charset) throws IOException {
+	    byte[] bytes = string.getBytes(charset);
+	    return bytes.length;
+	}
+	
 	public static void writeString(DataOutputStream out, String string, Charset charset) throws IOException {
 	    byte[] bytes = string.getBytes(charset);
 	    writeVarInt(out, bytes.length);

src/com/loohp/limbo/Utils/MojangAPIUtils.java

@@ -9,7 +9,7 @@ import java.util.stream.Collectors;
 
 import javax.net.ssl.HttpsURLConnection;
 
-public class SkinUtils {
+public class MojangAPIUtils {
 	
 	public static class SkinResponse {
 
@@ -31,7 +31,7 @@ public class SkinUtils {
 		
 	}
 	
-	public static SkinResponse getSkinFromMojangServer(String username) {
+	public static UUID getOnlineUUIDOfPlayerFromMojang(String username) {
 		try {	    	
 	        URL url = new URL("https://api.mojang.com/users/profiles/minecraft/" + username);
 	        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
@@ -42,8 +42,12 @@ public class SkinUtils {
             connection.addRequestProperty("Pragma", "no-cache");
 	        if (connection.getResponseCode() == HttpsURLConnection.HTTP_OK) {
 	            String reply = new BufferedReader(new InputStreamReader(connection.getInputStream())).readLine();
-	            String uuid = reply.split("\"id\":\"")[1].split("\"")[0];
-	            return getSkinFromMojangServer(UUID.fromString(uuid.replaceFirst( "([0-9a-fA-F]{8})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]+)", "$1-$2-$3-$4-$5" )));
+	            if (!reply.contains("\"error\":\"BadRequestException\"")) {
+	            	String uuid = reply.split("\"id\":\"")[1].split("\"")[0];
+		            return UUID.fromString(uuid.replaceFirst("([0-9a-fA-F]{8})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]+)", "$1-$2-$3-$4-$5"));
+	            } else {
+	            	return null;
+	            }
 	        } else {
 	            System.out.println("Connection could not be opened (Response code " + connection.getResponseCode() + ", " + connection.getResponseMessage() + ")");
 	            return null;
@@ -54,6 +58,14 @@ public class SkinUtils {
 	    }
 	}
 	
+	public static SkinResponse getSkinFromMojangServer(String username) {
+		UUID uuid = getOnlineUUIDOfPlayerFromMojang(username);
+		if (uuid == null) {
+			return null;
+		}
+		return getSkinFromMojangServer(uuid);
+	}
+	
 	public static SkinResponse getSkinFromMojangServer(UUID uuid) {
 	    try {	    	
 	        URL url = new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + uuid.toString() + "?unsigned=false");

src/mapping.json

@@ -3,18 +3,21 @@
     "0x00": "PacketHandshakingIn"
   },
   "LoginIn": {
-    "0x00": "PacketLoginInLoginStart"
+    "0x00": "PacketLoginInLoginStart",
+    "0x02": "PacketLoginInPluginMessaging"
   },
   "LoginOut": {
     "PacketLoginOutLoginSuccess": "0x02",
-    "PacketLoginOutDisconnect": "0x00"
+    "PacketLoginOutDisconnect": "0x00",
+    "PacketLoginOutPluginMessaging": "0x04",
   },
   "PlayIn": {
     "0x10": "PacketPlayInKeepAlive",
     "0x03": "PacketPlayInChat",
     "0x13": "PacketPlayInPositionAndLook",
     "0x12": "PacketPlayInPosition",
-    "0x14": "PacketPlayInRotation"
+    "0x14": "PacketPlayInRotation",
+    "0x0B": "PacketPlayInPluginMessaging"
   },
   "PlayOut": {
     "PacketPlayOutLogin": "0x25",
@@ -27,7 +30,8 @@
     "PacketPlayOutPlayerInfo": "0x33",
     "PacketPlayOutUpdateViewPosition": "0x40",
     "PacketPlayOutShowPlayerSkins": "0x44",
-    "PacketPlayOutDisconnect": "0x1A"
+    "PacketPlayOutDisconnect": "0x1A",
+    "PacketPlayOutPluginMessaging": "0x17"
   },
   "StatusIn": {
     "0x01": "PacketStatusInPing",

src/server.properties

@@ -7,6 +7,9 @@ server-port=30000
 #Server ip, localhost for local access only
 server-ip=localhost
 
+#Whether this is server is behind a bungeecord proxy
+bungeecord=true
+
 #World Name and the Schematic file containing map
 level-name=world;spawn.schem