Add initial support for wire format packets

ProtocolLib/src/main/java/com/comphenix/protocol/PacketStream.java

@@ -2,16 +2,16 @@
  *  ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
  *  Copyright (C) 2012 Kristian S. Stangeland
  *
- *  This program is free software; you can redistribute it and/or modify it under the terms of the 
- *  GNU General Public License as published by the Free Software Foundation; either version 2 of 
+ *  This program is free software; you can redistribute it and/or modify it under the terms of the
+ *  GNU General Public License as published by the Free Software Foundation; either version 2 of
  *  the License, or (at your option) any later version.
  *
- *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
- *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+ *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  *  See the GNU General Public License for more details.
  *
- *  You should have received a copy of the GNU General Public License along with this program; 
- *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
+ *  You should have received a copy of the GNU General Public License along with this program;
+ *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  *  02111-1307 USA
  */
 
@@ -24,6 +24,7 @@ import org.bukkit.entity.Player;
 import com.comphenix.protocol.events.ListenerPriority;
 import com.comphenix.protocol.events.NetworkMarker;
 import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.injector.netty.WirePacket;
 
 /**
  * Represents a object capable of sending or receiving packets.
@@ -37,7 +38,7 @@ public interface PacketStream {
 	 * @param packet - packet to send.
 	 * @throws InvocationTargetException - if an error occured when sending the packet.
 	 */
-	public void sendServerPacket(Player receiver, PacketContainer packet) 
+	public void sendServerPacket(Player receiver, PacketContainer packet)
 			throws InvocationTargetException;
 
 	/**
@@ -61,6 +62,22 @@ public interface PacketStream {
 	public void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters)
 			throws InvocationTargetException;
 
+	/**
+	 * Send a wire packet to the given player.
+	 * @param receiver - the receiver.
+	 * @param id - packet id.
+	 * @param bytes - packet bytes.
+	 * @throws InvocationTargetException if an error occured when sending the packet.
+	 */
+	public void sendWirePacket(Player receiver, int id, byte[] bytes) throws InvocationTargetException;
+
+	/**
+	 * Send a wire packet to the given player.
+	 * @param receiver - the receiver.
+	 * @param packet - packet to send.
+	 * @throws InvocationTargetException if an error occured when sending the packet.
+	 */
+	public void sendWirePacket(Player receiver, WirePacket packet) throws InvocationTargetException;
 
 	/**
 	 * Simulate recieving a certain packet from a given player.
@@ -69,7 +86,7 @@ public interface PacketStream {
 	 * @throws InvocationTargetException If the reflection machinery failed.
 	 * @throws IllegalAccessException If the underlying method caused an error.
 	 */
-	public void recieveClientPacket(Player sender, PacketContainer packet) 
+	public void recieveClientPacket(Player sender, PacketContainer packet)
 			throws IllegalAccessException, InvocationTargetException;
 
 	/**

ProtocolLib/src/main/java/com/comphenix/protocol/injector/DelayedPacketManager.java

@@ -27,6 +27,7 @@ import com.comphenix.protocol.events.NetworkMarker;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketListener;
 import com.comphenix.protocol.injector.PacketFilterManager.PlayerInjectHooks;
+import com.comphenix.protocol.injector.netty.WirePacket;
 import com.comphenix.protocol.injector.packet.PacketRegistry;
 import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.utility.MinecraftVersion;
@@ -45,6 +46,7 @@ import com.google.common.collect.Sets;
 public class DelayedPacketManager implements ProtocolManager, InternalManager {
 	// Registering packet IDs that are not supported
 	public static final ReportType REPORT_CANNOT_SEND_QUEUED_PACKET = new ReportType("Cannot send queued packet %s.");
+	public static final ReportType REPORT_CANNOT_SEND_QUEUED_WIRE_PACKET = new ReportType("Cannot send queued wire packet %s.");
 	public static final ReportType REPORT_CANNOT_REGISTER_QUEUED_LISTENER = new ReportType("Cannot register queued listener %s.");
 	
 	private volatile InternalManager delegate;
@@ -104,7 +106,7 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 	/**
 	 * Update the delegate to the underlying manager.
 	 * <p>
-	 * This will prompt this packet manager to immediately transmit and 
+	 * This will prompt this packet manager to immediately transmit and
 	 * register all queued packets an listeners.
 	 * @param delegate - delegate to the new manager.
 	 */
@@ -130,7 +132,7 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 						delegate.addPacketListener(listener);
 					} catch (IllegalArgumentException e) {
 						// Inform about this plugin error
-						reporter.reportWarning(this, 
+						reporter.reportWarning(this,
 							Report.newBuilder(REPORT_CANNOT_REGISTER_QUEUED_LISTENER).
 								callerParam(delegate).messageParam(listener).error(e));
 					}
@@ -150,7 +152,7 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 		}
 	}
 
-	private Runnable queuedAddPacket(final ConnectionSide side, final Player player, final PacketContainer packet, 
+	private Runnable queuedAddPacket(final ConnectionSide side, final Player player, final PacketContainer packet,
 									 final NetworkMarker marker, final boolean filtered) {
 		
 		return new Runnable() {
@@ -170,10 +172,10 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 					}
 				} catch (Exception e) {
 					// Inform about this plugin error
-					reporter.reportWarning(this, 
+					reporter.reportWarning(this,
 						Report.newBuilder(REPORT_CANNOT_SEND_QUEUED_PACKET).
 							callerParam(delegate).messageParam(packet).error(e));
-				} 
+				}
 			}
 		};
 	}
@@ -207,6 +209,36 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 		}
 	}
 
+	@Override
+	public void sendWirePacket(Player receiver, int id, byte[] bytes) throws InvocationTargetException {
+		WirePacket packet = new WirePacket(id, bytes);
+		sendWirePacket(receiver, packet);
+	}
+
+	@Override
+	public void sendWirePacket(final Player receiver, final WirePacket packet) throws InvocationTargetException {
+		if (delegate != null) {
+			delegate.sendWirePacket(receiver, packet);
+		} else {
+			queuedActions.add(new Runnable() {
+
+				@Override
+				public void run() {
+					try {
+						delegate.sendWirePacket(receiver, packet);
+					} catch (Throwable ex) {
+						// Inform about this plugin error
+						reporter.reportWarning(this, Report.newBuilder(REPORT_CANNOT_SEND_QUEUED_WIRE_PACKET)
+								.callerParam(delegate)
+								.messageParam(packet)
+								.error(ex));
+					}
+				}
+
+			});
+		}
+	}
+
 	@Override
 	public void recieveClientPacket(Player sender, PacketContainer packet) throws IllegalAccessException, InvocationTargetException {
 		recieveClientPacket(sender, packet, null, true);
@@ -405,7 +437,7 @@ public class DelayedPacketManager implements ProtocolManager, InternalManager {
 	
 	@Override
 	public void updateEntity(Entity entity, List<Player> observers) throws FieldAccessException {
-		if (delegate != null) 
+		if (delegate != null)
 			delegate.updateEntity(entity, observers);
 		else
 			EntityUtilities.updateEntity(entity, observers);

ProtocolLib/src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java

@@ -17,6 +17,8 @@
 
 package com.comphenix.protocol.injector;
 
+import io.netty.channel.Channel;
+
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Collections;
@@ -67,6 +69,7 @@ import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.events.PacketListener;
 import com.comphenix.protocol.injector.netty.NettyProtocolInjector;
+import com.comphenix.protocol.injector.netty.WirePacket;
 import com.comphenix.protocol.injector.packet.InterceptWritePacket;
 import com.comphenix.protocol.injector.packet.PacketInjector;
 import com.comphenix.protocol.injector.packet.PacketInjectorBuilder;
@@ -833,6 +836,22 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 		playerInjection.sendServerPacket(receiver, packet, marker, filters);
 	}
 
+	@Override
+	public void sendWirePacket(Player receiver, int id, byte[] bytes) throws InvocationTargetException {
+		WirePacket packet = new WirePacket(id, bytes);
+		sendWirePacket(receiver, packet);
+	}
+
+	@Override
+	public void sendWirePacket(Player receiver, WirePacket packet) throws InvocationTargetException {
+		Channel channel = playerInjection.getChannel(receiver);
+		if (channel == null) {
+			throw new InvocationTargetException(new NullPointerException(), "Failed to obtain channel for " + receiver.getName());
+		}
+
+		channel.writeAndFlush(packet);
+	}
+
 	@Override
 	public void recieveClientPacket(Player sender, PacketContainer packet) throws IllegalAccessException, InvocationTargetException {
 		recieveClientPacket(sender, packet, null, true);

ProtocolLib/src/main/java/com/comphenix/protocol/injector/netty/ChannelInjector.java

@@ -223,7 +223,12 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 			protocolEncoder = new MessageToByteEncoder<Object>() {
 				@Override
 				protected void encode(ChannelHandlerContext ctx, Object packet, ByteBuf output) throws Exception {
-					ChannelInjector.this.encode(ctx, packet, output);
+					if (packet instanceof WirePacket) {
+						// Special case for wire format
+						ChannelInjector.this.encodeWirePacket(ctx, (WirePacket) packet, output);
+					} else {
+						ChannelInjector.this.encode(ctx, packet, output);
+					}
 				}
 
 				@Override
@@ -381,6 +386,11 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 		super.exceptionCaught(ctx, cause);
 	}
 
+	protected void encodeWirePacket(ChannelHandlerContext ctx, WirePacket packet, ByteBuf output) throws Exception {
+		packet.writeId(output);
+		packet.writeBytes(output);
+	}
+
 	/**
 	 * Encode a packet to a byte buffer, taking over for the standard Minecraft encoder.
 	 * @param ctx - the current context.
@@ -875,4 +885,8 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 			return injector;
 		}
 	}
+
+	public Channel getChannel() {
+		return originalChannel;
+	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/netty/NettyProtocolInjector.java

@@ -373,6 +373,16 @@ public class NettyProtocolInjector implements ChannelListener {
 			public void handleDisconnect(Player player) {
 				injectionFactory.fromPlayer(player, listener).close();
 			}
+
+			@Override
+			public Channel getChannel(Player player) {
+				Injector injector = injectionFactory.fromPlayer(player, listener);
+				if (injector instanceof ChannelInjector) {
+					return ((ChannelInjector) injector).getChannel();
+				}
+
+				return null;
+			}
 		};
 	}
 	

ProtocolLib/src/main/java/com/comphenix/protocol/injector/netty/WirePacket.java

@@ -0,0 +1,42 @@
+/**
+ * (c) 2015 dmulloy2
+ */
+package com.comphenix.protocol.injector.netty;
+
+import io.netty.buffer.ByteBuf;
+
+/**
+ * @author dmulloy2
+ */
+
+public class WirePacket {
+	private final int id;
+	private final byte[] bytes;
+
+	public WirePacket(int id, byte[] bytes) {
+		this.id = id;
+		this.bytes = bytes;
+	}
+
+	public int getId() {
+		return id;
+	}
+
+	public byte[] getBytes() {
+		return bytes;
+	}
+
+	public void writeId(ByteBuf output) {
+		int i = id;
+		while ((i & -128) != 0) {
+			output.writeByte(i & 127 | 128);
+			i >>>= 7;
+		}
+
+		output.writeByte(i);
+	}
+
+	public void writeBytes(ByteBuf output) {
+		output.writeBytes(bytes);
+	}
+}

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/PlayerInjectionHandler.java

@@ -1,5 +1,7 @@
 package com.comphenix.protocol.injector.player;
 
+import io.netty.channel.Channel;
+
 import java.io.DataInputStream;
 import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
@@ -76,7 +78,7 @@ public interface PlayerInjectionHandler {
 	public abstract void addPacketHandler(PacketType type, Set<ListenerOptions> options);
 
 	/**
-	 * Remove an underlying packet handler of this type.  
+	 * Remove an underlying packet handler of this type.
 	 * @param type - packet type to unregister.
 	 */
 	public abstract void removePacketHandler(PacketType type);
@@ -127,7 +129,7 @@ public interface PlayerInjectionHandler {
 	 * Send the given packet to the given receiver.
 	 * @param receiver - the player receiver.
 	 * @param packet - the packet to send.
-	 * @param marker 
+	 * @param marker
 	 * @param filters - whether or not to invoke the packet filters.
 	 * @throws InvocationTargetException If an error occurred during sending.
 	 */
@@ -159,7 +161,7 @@ public interface PlayerInjectionHandler {
 	/**
 	 * Determine if a listener is valid or not.
 	 * <p>
-	 * If not, a warning will be printed to the console. 
+	 * If not, a warning will be printed to the console.
 	 * @param listener - listener to check.
 	 */
 	public abstract void checkListener(PacketListener listener);
@@ -198,4 +200,6 @@ public interface PlayerInjectionHandler {
 	 * @return TRUE if we do, FALSE otherwise.
 	 */
 	public abstract boolean hasMainThreadListener(PacketType type);
+
+	public abstract Channel getChannel(Player player);
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/player/ProxyPlayerInjectionHandler.java

@@ -2,21 +2,23 @@
  *  ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
  *  Copyright (C) 2012 Kristian S. Stangeland
  *
- *  This program is free software; you can redistribute it and/or modify it under the terms of the 
- *  GNU General Public License as published by the Free Software Foundation; either version 2 of 
+ *  This program is free software; you can redistribute it and/or modify it under the terms of the
+ *  GNU General Public License as published by the Free Software Foundation; either version 2 of
  *  the License, or (at your option) any later version.
  *
- *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
- *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+ *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  *  See the GNU General Public License for more details.
  *
- *  You should have received a copy of the GNU General Public License along with this program; 
- *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
+ *  You should have received a copy of the GNU General Public License along with this program;
+ *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  *  02111-1307 USA
  */
 
 package com.comphenix.protocol.injector.player;
 
+import io.netty.channel.Channel;
+
 import java.io.DataInputStream;
 import java.io.InputStream;
 import java.lang.ref.WeakReference;
@@ -94,7 +96,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	private WeakReference<PlayerInjector> lastSuccessfulHook;
 	
 	// Dummy injection
-	private ConcurrentMap<Player, PlayerInjector> dummyInjectors = 
+	private ConcurrentMap<Player, PlayerInjector> dummyInjectors =
 			SafeCacheBuilder.newBuilder().
 			expireAfterWrite(30, TimeUnit.SECONDS).
 			build(BlockingHashMap.<Player, PlayerInjector>newInvalidCacheLoader());
@@ -128,7 +130,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	private Predicate<GamePhase> injectionFilter;
 	
 	public ProxyPlayerInjectionHandler(
-			ErrorReporter reporter, Predicate<GamePhase> injectionFilter, 
+			ErrorReporter reporter, Predicate<GamePhase> injectionFilter,
 			ListenerInvoker invoker, Set<PacketListener> packetListeners, Server server, MinecraftVersion version) {
 		
 		this.reporter = reporter;
@@ -175,7 +177,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 			return loginPlayerHook;
 		case PLAYING:
 			return playingPlayerHook;
-		default: 
+		default:
 			throw new IllegalArgumentException("Cannot retrieve injection hook for both phases at the same time.");
 		}
 	}
@@ -230,9 +232,9 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	private PlayerInjector getHookInstance(Player player, PlayerInjectHooks hook) throws IllegalAccessException {
 		// Construct the correct player hook
 		switch (hook) {
-		case NETWORK_HANDLER_FIELDS: 
+		case NETWORK_HANDLER_FIELDS:
 			return new NetworkFieldInjector(reporter, player, invoker, sendingFilters);
-		case NETWORK_MANAGER_OBJECT: 
+		case NETWORK_MANAGER_OBJECT:
 			return new NetworkObjectInjector(reporter, player, invoker, sendingFilters);
 		case NETWORK_SERVER_OBJECT:
 			return new NetworkServerInjector(reporter, player, invoker, sendingFilters, serverInjection);
@@ -373,8 +375,8 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 					
 				} catch (Exception e) {
 					// Mark this injection attempt as a failure
-					reporter.reportDetailed(this, 
-							Report.newBuilder(REPORT_PLAYER_HOOK_FAILED).messageParam(tempHook).callerParam(player, injectionPoint, phase).error(e) 
+					reporter.reportDetailed(this,
+							Report.newBuilder(REPORT_PLAYER_HOOK_FAILED).messageParam(tempHook).callerParam(player, injectionPoint, phase).error(e)
 					);
 					hookFailed = true;
 				}
@@ -401,7 +403,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 			// Update values
 			if (injector != null)
 				lastSuccessfulHook = new WeakReference<PlayerInjector>(injector);
-			if (permanentHook != getPlayerHook(phase)) 
+			if (permanentHook != getPlayerHook(phase))
 				setPlayerHook(phase, tempHook);
 			
 			// Save injector
@@ -458,7 +460,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 			if (injector != null) {
 				injector.setUpdatedPlayer(player);
 			} else {
-				inputStreamLookup.setSocketInjector(player.getAddress(), 
+				inputStreamLookup.setSocketInjector(player.getAddress(),
 						new BukkitSocketInjector(player));
 			}
 		}
@@ -547,7 +549,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 			injector.sendServerPacket(packet.getHandle(), marker, filters);
 		} else {
 			throw new PlayerLoggedOutException(String.format(
-					"Unable to send packet %s (%s): Player %s has logged out.", 
+					"Unable to send packet %s (%s): Player %s has logged out.",
 					packet.getType(), packet, receiver
 			));
 		}
@@ -569,7 +571,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 			injector.processPacket(mcPacket);
 		else
 			throw new PlayerLoggedOutException(String.format(
-					"Unable to receieve packet %s. Player %s has logged out.", 
+					"Unable to receieve packet %s. Player %s has logged out.",
 					mcPacket, player
 			));
 	}
@@ -691,7 +693,7 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 	/**
 	 * Determine if a listener is valid or not.
 	 * <p>
-	 * If not, a warning will be printed to the console. 
+	 * If not, a warning will be printed to the console.
 	 * @param listener - listener to check.
 	 */
 	@Override
@@ -703,8 +705,8 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 
 			// We won't prevent the listener, as it may still have valid packets
 			if (result != null) {
-				reporter.reportWarning(this, 
-						Report.newBuilder(REPORT_UNSUPPPORTED_LISTENER).messageParam(PacketAdapter.getPluginName(listener), result) 
+				reporter.reportWarning(this,
+						Report.newBuilder(REPORT_UNSUPPPORTED_LISTENER).messageParam(PacketAdapter.getPluginName(listener), result)
 				);
 				
 				// These are illegal
@@ -753,4 +755,9 @@ class ProxyPlayerInjectionHandler implements PlayerInjectionHandler {
 		playerInjection.clear();
 		invoker = null;
 	}
+
+	@Override
+	public Channel getChannel(Player player) {
+		throw new UnsupportedOperationException();
+	}
 }

ProtocolLib/src/main/java/com/comphenix/protocol/injector/spigot/DummyPlayerHandler.java

@@ -1,5 +1,7 @@
 package com.comphenix.protocol.injector.spigot;
 
+import io.netty.channel.Channel;
+
 import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.net.InetSocketAddress;
@@ -82,4 +84,9 @@ class DummyPlayerHandler extends AbstractPlayerHandler {
 	public void updatePlayer(Player player) {
 		// Do nothing
 	}
+
+	@Override
+	public Channel getChannel(Player player) {
+		throw new UnsupportedOperationException();
+	}
 }