Fix equality null test

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/ProtocolLibListener.java

@@ -50,6 +50,7 @@ import java.security.PublicKey;
 import java.security.SecureRandom;
 import java.security.SignatureException;
 import java.time.Instant;
+import java.util.Objects;
 import java.util.Optional;
 
 import javax.crypto.BadPaddingException;
@@ -58,6 +59,7 @@ import javax.crypto.NoSuchPaddingException;
 
 import lombok.var;
 import org.bukkit.entity.Player;
+import org.jetbrains.annotations.Nullable;
 
 import static com.comphenix.protocol.PacketType.Login.Client.ENCRYPTION_BEGIN;
 import static com.comphenix.protocol.PacketType.Login.Client.START;
@@ -75,6 +77,9 @@ public class ProtocolLibListener extends PacketAdapter {
 
     private final boolean verifyClientKeys;
 
+    @Nullable
+    private PacketContainer lastStartPacket;
+
     public ProtocolLibListener(FastLoginBukkit plugin, AntiBotService antiBotService, boolean verifyClientKeys) {
         //run async in order to not block the server, because we are making api calls to Mojang
         super(params()
@@ -95,12 +100,25 @@ public class ProtocolLibListener extends PacketAdapter {
 
     @Override
     public void onPacketReceiving(PacketEvent packetEvent) {
-        plugin.getLog().info("New packet {} from {}; Cancellation: {}, Auth-Plugin: {}, Initialized: {}, Meta: {}",
+        PacketContainer packet = packetEvent.getPacket();
+        plugin.getLog().info("New packet {} from {}; Cancellation: {}, Meta: {}",
                 packetEvent.getPacketType(), packetEvent.getPlayer(), packetEvent.isCancelled(),
-                plugin.getCore().getAuthPluginHook(), !plugin.isServerFullyStarted(),
-                packetEvent.getPacket().getMeta(SOURCE_META_KEY)
+                packet.getMeta(SOURCE_META_KEY)
         );
 
+        if (packetEvent.getPacketType() == START) {
+            if (lastStartPacket != null) {
+                plugin.getLog().info("Start-packet equality (Last/New): {}/{}, {}",
+                        lastStartPacket.getHandle().hashCode(), packet.getHandle().hashCode(),
+                        Objects.equals(lastStartPacket.getHandle(), packet.getHandle())
+                );
+
+                plugin.getLog().info("Content: {}, {}", lastStartPacket.getHandle(), packet.getHandle());
+            }
+
+            lastStartPacket = packet;
+        }
+
         if (packetEvent.isCancelled()
                 || plugin.getCore().getAuthPluginHook() == null
                 || !plugin.isServerFullyStarted()) {
@@ -115,7 +133,7 @@ public class ProtocolLibListener extends PacketAdapter {
         Player sender = packetEvent.getPlayer();
         PacketType packetType = packetEvent.getPacketType();
         if (packetType == START) {
-            PacketContainer packet = packetEvent.getPacket();
+            // PacketContainer packet = packet;
 
             InetSocketAddress address = sender.getAddress();
             String username = getUsername(packet);

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java

@@ -196,7 +196,7 @@ public class VerifyResponseTask implements Runnable {
     }
 
     //try to get the networkManager from ProtocolLib
-    private Object getNetworkManager() throws IllegalAccessException, ClassNotFoundException {
+    private Object getNetworkManager() throws ClassNotFoundException {
         Object injectorContainer = TemporaryPlayerFactory.getInjectorFromPlayer(player);
 
         // ChannelInjector
@@ -290,5 +290,6 @@ public class VerifyResponseTask implements Runnable {
         //we don't want to handle our own packets so ignore filters
         startPacket.setMeta(ProtocolLibListener.SOURCE_META_KEY, plugin.getName());
         ProtocolLibrary.getProtocolManager().receiveClientPacket(player, startPacket, true);
+        plugin.getLog().info("Sending new fake login start packet to {}-{}", player, username);
     }
 }