Make it easy to clone packets.

ProtocolLib/src/main/java/com/comphenix/protocol/events/PacketContainer.java

@@ -17,6 +17,8 @@
 
 package com.comphenix.protocol.events;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
@@ -41,6 +43,7 @@ import com.comphenix.protocol.wrappers.BukkitConverters;
 import com.comphenix.protocol.wrappers.ChunkPosition;
 import com.comphenix.protocol.wrappers.WrappedDataWatcher;
 import com.comphenix.protocol.wrappers.WrappedWatchableObject;
+import com.google.common.io.Closeables;
 
 import net.minecraft.server.Packet;
 
@@ -347,6 +350,42 @@ public class PacketContainer implements Serializable {
 		return id;
 	}
 	
+	/**
+	 * Create a deep copy of the current packet.
+	 * @return A deep copy of the current packet.
+	 */
+	public PacketContainer deepClone() {
+		ObjectOutputStream output = null;
+		ObjectInputStream input = null;
+		
+		try {
+			// Use a small buffer of 32 bytes initially.
+			ByteArrayOutputStream bufferOut = new ByteArrayOutputStream(); 
+			output = new ObjectOutputStream(bufferOut);
+			output.writeObject(this);
+			
+			ByteArrayInputStream bufferIn = new ByteArrayInputStream(bufferOut.toByteArray());
+			input = new ObjectInputStream(bufferIn);
+			return (PacketContainer) input.readObject();
+			
+		} catch (IOException e) {
+			throw new IllegalStateException("Unexpected error occured during object cloning.", e);
+		} catch (ClassNotFoundException e) {
+			// Cannot happen
+			throw new IllegalStateException("Unexpected failure with serialization.", e);
+		} finally {
+			try {
+				if (output != null)
+					output.close();
+				if (input != null)
+					input.close();
+				
+			} catch (IOException e) {
+				// STOP IT
+			}
+		}
+	}
+	
 	private void writeObject(ObjectOutputStream output) throws IOException {
 	    // Default serialization 
 		output.defaultWriteObject();

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

@@ -55,7 +55,6 @@ import com.comphenix.protocol.events.*;
 import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
 import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.wrappers.BukkitConverters;
 import com.google.common.base.Objects;
 import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableSet;