Always skip EaglerCraft players

Author: jonesdevelopment

common/src/main/java/xyz/jonesdev/sonar/common/InboundHandlerAdapter.java

@@ -30,6 +30,7 @@
 import xyz.jonesdev.sonar.common.protocol.SonarPacketEncoder;
 import xyz.jonesdev.sonar.common.protocol.SonarPacketRegistry;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
+import xyz.jonesdev.sonar.common.util.EaglerUtil;
 import xyz.jonesdev.sonar.common.util.GeyserUtil;
 import xyz.jonesdev.sonar.common.util.ProtocolUtil;
 import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;
@@ -120,7 +121,8 @@ protected final void handleLogin(final @NotNull ChannelHandlerContext ctx,
     }
 
     // Don't continue the verification process if the verification is disabled
-    if (!Sonar.get0().getAntiBot().shouldVerifyNewPlayers()) {
+    if (!Sonar.get0().getAntiBot().shouldVerifyNewPlayers()
+      || EaglerUtil.isEaglerConnection(ctx.channel())) {
       initialLogin(ctx.channel(), inetAddress, initialLoginAction);
       return;
     }

common/src/main/java/xyz/jonesdev/sonar/common/util/EaglerUtil.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2025 Sonar Contributors
+ *
+ * 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 3 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.  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, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.util;
+
+import io.netty.channel.Channel;
+import io.netty.util.AttributeKey;
+import lombok.experimental.UtilityClass;
+import org.jetbrains.annotations.NotNull;
+
+@UtilityClass
+public class EaglerUtil {
+  // https://github.com/lax1dude/eaglerxserver/blob/main/core/src/main/java/net/lax1dude/eaglercraft/backend/server/adapter/PipelineAttributes.java
+  public static final AttributeKey<Object> EAGLER_LISTENER_DATA = AttributeKey.valueOf("$eagler0");
+  public static final AttributeKey<Object> EAGLER_PIPELINE_DATA = AttributeKey.valueOf("$eagler1");
+
+  public boolean isEaglerConnection(final @NotNull Channel channel) {
+    return channel.attr(EAGLER_LISTENER_DATA).get() != null
+      || channel.attr(EAGLER_PIPELINE_DATA).get() != null;
+  }
+}