src/de/steamwar/bungeecore/BungeeCore.java

@@ -84,6 +84,7 @@ public class BungeeCore extends Plugin {
         new CheckListener();
         new ModLoaderBlocker();
         new WorldDownloader();
+        new BrandListener();
 
         commands.put("/b", null);
         commands.put("/gs", null);

src/de/steamwar/bungeecore/listeners/BrandListener.java

@@ -0,0 +1,65 @@
+/*
+    This file is a part of the SteamWar software.
+
+    Copyright (C) 2020  SteamWar.de-Serverteam
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.bungeecore.listeners;
+
+import de.steamwar.bungeecore.BungeeCore;
+import de.steamwar.bungeecore.Message;
+import de.steamwar.bungeecore.sql.SteamwarUser;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufAllocator;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.event.PluginMessageEvent;
+import net.md_5.bungee.event.EventHandler;
+import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
+import net.md_5.bungee.protocol.packet.PluginMessage;
+
+import java.util.concurrent.TimeUnit;
+
+public class BrandListener extends BasicListener {
+
+    @EventHandler
+    public void onServerSwitch(PluginMessageEvent event) {
+        if(event.getTag().equals("minecraft:brand") || event.getTag().equals("MC|Brand")) {
+            return;
+        }
+
+        if(event.getReceiver().getAddress().getHostName().contains("localhost")) {
+            return;
+        }
+
+        BungeeCore.get().getProxy().getScheduler().schedule(BungeeCore.get(), () -> {
+            ProxiedPlayer player = (ProxiedPlayer) event.getReceiver();
+            
+            String channel = player.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13 ? "minecraft:brand" : "MC|Brand";
+            StringBuilder serverBrand = new StringBuilder();
+            for (byte b:event.getData()) {
+                serverBrand.append((char) b);
+            }
+
+            String brandString = Message.parse("STEAMWAR_BRAND", player, BungeeCore.get().getProxy().getName(), player.getServer().getInfo().getName(), serverBrand.substring(1));
+
+            ByteBuf brand = ByteBufAllocator.DEFAULT.heapBuffer();
+            DefinedPacket.writeString(brandString, brand);
+            player.sendData(channel, DefinedPacket.toArray(brand));
+            brand.release();
+        }, 50, TimeUnit.MILLISECONDS);
+    }
+}

src/de/steamwar/messages/BungeeCore.properties

@@ -7,6 +7,8 @@ UNKNOWN_PLAYER=§cDiesen Spieler gibt es nicht.
 UNKNOWN_TEAM=§cDieses Team gibt es nicht.
 INVALID_TIME=§cUngültige Zeitangabe.
 
+STEAMWAR_BRAND=§eSteam§8War.de §7({0}) §r<- §e{1} §7({2})§r
+
 #ModLoader blocker
 MODLOADER_INSTALLED=§7Du hast §e{0} §7installiert. Daher kannst du keinen Arenen beitreten.
 MODLOADER_DENIED=§cMit Fabric, Forge und LiteLoader kannst du keinen Arenen beitreten.