new event TabCompleteRequestEvent and deprecate TabCompleteEvent

Players with permission bungeecord.multiple_connect can have multiple connections with the same Minecraft account.
The UUID and player name is altered to avoid collision with other player:
UUID : xxxxxxxx-xxxx-VIxx-xxxx-xxxxxxxxxxxx
- The UUID version (V above) is now the provided version + 8 (for online player, it is 4, so it becomes C).
- The I digit will follow the index of the duplicated player : first duplicated player is 1, second one is 2.
- The name of the player will be the real player name, followed by the character "." (dot) followed by the duplication index.

Bedrock accounts connected using the Floodgate plugin will not be able to connect multiple times due to the risk of xUID collision.

.github/workflows/maven.yml

@@ -14,9 +14,10 @@ jobs:
     name: Java ${{ matrix.java }}
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v1
+    - uses: actions/checkout@v3
+    - uses: actions/setup-java@v3
       with:
+        distribution: zulu
         java-version: ${{ matrix.java }}
     - run: java -version && mvn --version
     - run: mvn --activate-profiles dist --no-transfer-progress package

api/pom.xml

@@ -72,7 +72,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.30</version>
+            <version>1.33</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>

api/src/main/java/net/md_5/bungee/api/event/ProxyPingEvent.java

@@ -8,7 +8,7 @@ import net.md_5.bungee.api.ServerPing;
 import net.md_5.bungee.api.connection.PendingConnection;
 
 /**
- * Called when the proxy is pinged with packet 0xFE from the server list.
+ * Called when the proxy is queried for status from the server list.
  */
 @Data
 @ToString(callSuper = false)

config/pom.xml

@@ -28,7 +28,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.30</version>
+            <version>1.33</version>
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>

log/src/main/java/net/md_5/bungee/log/BungeeLogger.java

@@ -24,6 +24,7 @@ public class BungeeLogger extends Logger
     {
         super( loggerName, null );
         setLevel( Level.ALL );
+        setUseParentHandlers( false );
 
         try
         {

log/src/main/java/net/md_5/bungee/log/LoggingForwardHandler.java

@@ -0,0 +1,29 @@
+package net.md_5.bungee.log;
+
+import java.util.logging.Handler;
+import java.util.logging.LogRecord;
+import java.util.logging.Logger;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class LoggingForwardHandler extends Handler
+{
+
+    private final Logger logger;
+
+    @Override
+    public void publish(LogRecord record)
+    {
+        logger.log( record );
+    }
+
+    @Override
+    public void flush()
+    {
+    }
+
+    @Override
+    public void close() throws SecurityException
+    {
+    }
+}

pom.xml

@@ -72,7 +72,7 @@
     <properties>
         <build.number>unknown</build.number>
         <lombok.version>1.18.22</lombok.version>
-        <netty.version>4.1.77.Final</netty.version>
+        <netty.version>4.1.85.Final</netty.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java

@@ -30,6 +30,7 @@ import net.md_5.bungee.protocol.packet.Respawn;
 import net.md_5.bungee.protocol.packet.ScoreboardDisplay;
 import net.md_5.bungee.protocol.packet.ScoreboardObjective;
 import net.md_5.bungee.protocol.packet.ScoreboardScore;
+import net.md_5.bungee.protocol.packet.ServerData;
 import net.md_5.bungee.protocol.packet.SetCompression;
 import net.md_5.bungee.protocol.packet.StatusRequest;
 import net.md_5.bungee.protocol.packet.StatusResponse;
@@ -208,4 +209,8 @@ public abstract class AbstractPacketHandler
     public void handle(GameState gameState) throws Exception
     {
     }
+
+    public void handle(ServerData serverData) throws Exception
+    {
+    }
 }

protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java

@@ -21,12 +21,22 @@ public abstract class DefinedPacket
 
     public static void writeString(String s, ByteBuf buf)
     {
-        if ( s.length() > Short.MAX_VALUE )
+        writeString( s, buf, Short.MAX_VALUE );
+    }
+
+    public static void writeString(String s, ByteBuf buf, int maxLength)
     {
-            throw new OverflowPacketException( "Cannot send string longer than Short.MAX_VALUE (got " + s.length() + " characters)" );
+        if ( s.length() > maxLength )
+        {
+            throw new OverflowPacketException( "Cannot send string longer than " + maxLength + " (got " + s.length() + " characters)" );
         }
 
         byte[] b = s.getBytes( Charsets.UTF_8 );
+        if ( b.length > maxLength * 3 )
+        {
+            throw new OverflowPacketException( "Cannot send string longer than " + ( maxLength * 3 ) + " (got " + b.length + " bytes)" );
+        }
+
         writeVarInt( b.length, buf );
         buf.writeBytes( b );
     }
@@ -39,15 +49,14 @@ public abstract class DefinedPacket
     public static String readString(ByteBuf buf, int maxLen)
     {
         int len = readVarInt( buf );
-        if ( len > maxLen * 4 )
+        if ( len > maxLen * 3 )
         {
-            throw new OverflowPacketException( "Cannot receive string longer than " + maxLen * 4 + " (got " + len + " bytes)" );
+            throw new OverflowPacketException( "Cannot receive string longer than " + maxLen * 3 + " (got " + len + " bytes)" );
         }
 
-        byte[] b = new byte[ len ];
-        buf.readBytes( b );
+        String s = buf.toString( buf.readerIndex(), len, Charsets.UTF_8 );
+        buf.readerIndex( buf.readerIndex() + len );
 
-        String s = new String( b, Charsets.UTF_8 );
         if ( s.length() > maxLen )
         {
             throw new OverflowPacketException( "Cannot receive string longer than " + maxLen + " (got " + s.length() + " characters)" );
@@ -275,7 +284,7 @@ public abstract class DefinedPacket
     {
         if ( buf.readBoolean() )
         {
-            return new PlayerPublicKey( buf.readLong(), readArray( buf ), readArray( buf ) );
+            return new PlayerPublicKey( buf.readLong(), readArray( buf, 512 ), readArray( buf, 4096 ) );
         }
 
         return null;

protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java

@@ -36,6 +36,7 @@ import net.md_5.bungee.protocol.packet.Respawn;
 import net.md_5.bungee.protocol.packet.ScoreboardDisplay;
 import net.md_5.bungee.protocol.packet.ScoreboardObjective;
 import net.md_5.bungee.protocol.packet.ScoreboardScore;
+import net.md_5.bungee.protocol.packet.ServerData;
 import net.md_5.bungee.protocol.packet.SetCompression;
 import net.md_5.bungee.protocol.packet.StatusRequest;
 import net.md_5.bungee.protocol.packet.StatusResponse;
@@ -338,6 +339,12 @@ public enum Protocol
                     map( ProtocolConstants.MINECRAFT_1_19, 0x49 ),
                     map( ProtocolConstants.MINECRAFT_1_19_1, 0x4C )
             );
+            TO_CLIENT.registerPacket(
+                    ServerData.class,
+                    ServerData::new,
+                    map( ProtocolConstants.MINECRAFT_1_19, 0x3F ),
+                    map( ProtocolConstants.MINECRAFT_1_19_1, 0x42 )
+            );
 
             TO_SERVER.registerPacket(
                     KeepAlive.class,

protocol/src/main/java/net/md_5/bungee/protocol/packet/Chat.java

@@ -54,7 +54,7 @@ public class Chat extends DefinedPacket
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
-        writeString( message, buf );
+        writeString( message, buf, ( direction == ProtocolConstants.Direction.TO_CLIENT ) ? 262144 : ( protocolVersion >= ProtocolConstants.MINECRAFT_1_11 ? 256 : 100 ) );
         if ( direction == ProtocolConstants.Direction.TO_CLIENT )
         {
             buf.writeByte( position );

protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientChat.java

@@ -49,7 +49,7 @@ public class ClientChat extends DefinedPacket
         buf.writeBoolean( signedPreview );
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_1 )
         {
-            chain.write( buf );
+            chain.write( buf, direction, protocolVersion );
         }
     }
 

protocol/src/main/java/net/md_5/bungee/protocol/packet/ClientCommand.java

@@ -67,7 +67,7 @@ public class ClientCommand extends DefinedPacket
         buf.writeBoolean( signedPreview );
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_1 )
         {
-            chain.write( buf );
+            chain.write( buf, direction, protocolVersion );
         }
     }
 

protocol/src/main/java/net/md_5/bungee/protocol/packet/ServerData.java

@@ -0,0 +1,78 @@
+package net.md_5.bungee.protocol.packet;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import net.md_5.bungee.protocol.AbstractPacketHandler;
+import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.ProtocolConstants;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = false)
+public class ServerData extends DefinedPacket
+{
+
+    private String motd;
+    private String icon;
+    private boolean preview;
+    private boolean enforceSecure;
+
+    @Override
+    public void read(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        if ( buf.readBoolean() )
+        {
+            motd = readString( buf, 262144 );
+        }
+        if ( buf.readBoolean() )
+        {
+            icon = readString( buf );
+        }
+
+        preview = buf.readBoolean();
+
+        if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_1 )
+        {
+            enforceSecure = buf.readBoolean();
+        }
+    }
+
+    @Override
+    public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
+    {
+        if ( motd != null )
+        {
+            buf.writeBoolean( true );
+            writeString( motd, buf, 262144 );
+        } else
+        {
+            buf.writeBoolean( false );
+        }
+
+        if ( icon != null )
+        {
+            buf.writeBoolean( true );
+            writeString( icon, buf );
+        } else
+        {
+            buf.writeBoolean( false );
+        }
+
+        buf.writeBoolean( preview );
+
+        if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_1 )
+        {
+            buf.writeBoolean( enforceSecure );
+        }
+    }
+
+    @Override
+    public void handle(AbstractPacketHandler handler) throws Exception
+    {
+        handler.handle( this );
+    }
+}

protocol/src/main/java/net/md_5/bungee/protocol/packet/SystemChat.java

@@ -30,7 +30,7 @@ public class SystemChat extends DefinedPacket
     @Override
     public void write(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion)
     {
-        writeString( message, buf );
+        writeString( message, buf, 262144 );
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_1 )
         {
             buf.writeBoolean( position == ChatMessageType.ACTION_BAR.ordinal() );

proxy/src/main/java/net/md_5/bungee/BungeeCord.java

@@ -24,10 +24,12 @@ import java.io.IOException;
 import java.io.PrintStream;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
+import java.text.Format;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Locale;
@@ -85,6 +87,7 @@ import net.md_5.bungee.conf.Configuration;
 import net.md_5.bungee.conf.YamlConfig;
 import net.md_5.bungee.forge.ForgeConstants;
 import net.md_5.bungee.log.BungeeLogger;
+import net.md_5.bungee.log.LoggingForwardHandler;
 import net.md_5.bungee.log.LoggingOutputStream;
 import net.md_5.bungee.netty.PipelineUtils;
 import net.md_5.bungee.protocol.DefinedPacket;
@@ -112,10 +115,9 @@ public class BungeeCord extends ProxyServer
     @Getter
     public final Configuration config = new Configuration();
     /**
-     * Localization bundle.
+     * Localization formats.
      */
-    private ResourceBundle baseBundle;
-    private ResourceBundle customBundle;
+    private Map<String, Format> messageFormats;
     public EventLoopGroup eventLoops;
     /**
      * locations.yml save thread.
@@ -187,13 +189,6 @@ public class BungeeCord extends ProxyServer
         // Java uses ! to indicate a resource inside of a jar/zip/other container. Running Bungee from within a directory that has a ! will cause this to muck up.
         Preconditions.checkState( new File( "." ).getAbsolutePath().indexOf( '!' ) == -1, "Cannot use BungeeCord in directory with ! in path." );
 
-        try
-        {
-            baseBundle = ResourceBundle.getBundle( "messages" );
-        } catch ( MissingResourceException ex )
-        {
-            baseBundle = ResourceBundle.getBundle( "messages", Locale.ENGLISH );
-        }
         reloadMessages();
 
         // This is a workaround for quite possibly the weirdest bug I have ever encountered in my life!
@@ -213,6 +208,21 @@ public class BungeeCord extends ProxyServer
 
         logger = new BungeeLogger( "BungeeCord", "proxy.log", consoleReader );
         JDK14LoggerFactory.LOGGER = logger;
+
+        // Before we can set the Err and Out streams to our LoggingOutputStream we also have to remove
+        // the default ConsoleHandler from the root logger, which writes to the err stream.
+        // But we still want to log these records, so we add our own handler which forwards the LogRecord to the BungeeLogger.
+        // This way we skip the err stream and the problem of only getting a string without context, and can handle the LogRecord itself.
+        // Thus improving the default bahavior for projects that log on other Logger instances not created by BungeeCord.
+        Logger rootLogger = Logger.getLogger( "" );
+        for ( Handler handler : rootLogger.getHandlers() )
+        {
+            rootLogger.removeHandler( handler );
+        }
+        rootLogger.addHandler( new LoggingForwardHandler( logger ) );
+
+        // We want everything that reaches these output streams to be handled by our logger
+        // since it applies a nice looking format and also writes to the logfile.
         System.setErr( new PrintStream( new LoggingOutputStream( logger, Level.SEVERE ), true ) );
         System.setOut( new PrintStream( new LoggingOutputStream( logger, Level.INFO ), true ) );
 
@@ -531,32 +541,49 @@ public class BungeeCord extends ProxyServer
         return ( BungeeCord.class.getPackage().getImplementationVersion() == null ) ? "unknown" : BungeeCord.class.getPackage().getImplementationVersion();
     }
 
-    public void reloadMessages()
+    public final void reloadMessages()
     {
+        Map<String, Format> cachedFormats = new HashMap<>();
+
         File file = new File( "messages.properties" );
         if ( file.isFile() )
         {
             try ( FileReader rd = new FileReader( file ) )
             {
-                customBundle = new PropertyResourceBundle( rd );
+                cacheResourceBundle( cachedFormats, new PropertyResourceBundle( rd ) );
             } catch ( IOException ex )
             {
                 getLogger().log( Level.SEVERE, "Could not load custom messages.properties", ex );
             }
         }
+
+        ResourceBundle baseBundle;
+        try
+        {
+            baseBundle = ResourceBundle.getBundle( "messages" );
+        } catch ( MissingResourceException ex )
+        {
+            baseBundle = ResourceBundle.getBundle( "messages", Locale.ENGLISH );
+        }
+        cacheResourceBundle( cachedFormats, baseBundle );
+
+        messageFormats = Collections.unmodifiableMap( cachedFormats );
+    }
+
+    private void cacheResourceBundle(Map<String, Format> map, ResourceBundle resourceBundle)
+    {
+        Enumeration<String> keys = resourceBundle.getKeys();
+        while ( keys.hasMoreElements() )
+        {
+            map.computeIfAbsent( keys.nextElement(), (key) -> new MessageFormat( resourceBundle.getString( key ) ) );
+        }
     }
 
     @Override
     public String getTranslation(String name, Object... args)
     {
-        String translation = "<translation '" + name + "' missing>";
-        try
-        {
-            translation = MessageFormat.format( customBundle != null && customBundle.containsKey( name ) ? customBundle.getString( name ) : baseBundle.getString( name ), args );
-        } catch ( MissingResourceException ex )
-        {
-        }
-        return translation;
+        Format format = messageFormats.get( name );
+        return ( format != null ) ? format.format( args ) : "<translation '" + name + "' missing>";
     }
 
     @Override

proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java

@@ -64,6 +64,7 @@ import net.md_5.bungee.protocol.packet.Respawn;
 import net.md_5.bungee.protocol.packet.ScoreboardDisplay;
 import net.md_5.bungee.protocol.packet.ScoreboardObjective;
 import net.md_5.bungee.protocol.packet.ScoreboardScore;
+import net.md_5.bungee.protocol.packet.ServerData;
 import net.md_5.bungee.protocol.packet.SetCompression;
 import net.md_5.bungee.protocol.packet.TabCompleteResponse;
 import net.md_5.bungee.tab.TabList;
@@ -742,6 +743,15 @@ public class DownstreamBridge extends PacketHandler
         return dest;
     }
 
+    @Override
+    public void handle(ServerData serverData) throws Exception
+    {
+        serverData.setMotd( null );
+        serverData.setIcon( null );
+        con.unsafe().sendPacket( serverData );
+        throw CancelSendSignal.INSTANCE;
+    }
+
     @Override
     public String toString()
     {

proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java

@@ -323,6 +323,7 @@ public class InitialHandler extends PacketHandler implements PendingConnection
         Preconditions.checkState( thisState == State.HANDSHAKE, "Not expecting HANDSHAKE" );
         this.handshake = handshake;
         ch.setVersion( handshake.getProtocolVersion() );
+        ch.getHandle().pipeline().remove( PipelineUtils.LEGACY_KICKER );
 
         // Starting with FML 1.8, a "\0FML\0" token is appended to the handshake. This interferes
         // with Bungee's IP forwarding, so we detect it, and remove it from the host string, for now.

proxy/src/main/resources/messages.properties

@@ -7,29 +7,29 @@ connect_kick=\u00a7cKicked whilst connecting to {0}: {1}
 current_server=\u00a76You are currently connected to {0}.
 fallback_kick=\u00a7cCould not connect to a default or fallback server. Incorrectly configured address/port/firewall? {0}
 fallback_lobby=\u00a7cCould not connect to target server, you have been moved to a fallback server.
-lost_connection=[Proxy] Lost connection to server.
-mojang_fail=Error occurred while contacting login servers, are they down?
+lost_connection=\u00a7cProxy lost connection to server.
+mojang_fail=\u00a7cError occurred while contacting login servers, are they down?
 no_permission=\u00a7cYou do not have permission to execute this command!
 no_server=\u00a7cThe specified server does not exist.
 no_server_permission=\u00a7cYou don''t have permission to access this server.
-outdated_client=Outdated client! Please use {0}
-outdated_server=Outdated server! I''m still on {0}
-proxy_full=Server is full!
-restart=[Proxy] Proxy restarting.
+outdated_client=\u00a7cOutdated client! Please use {0}
+outdated_server=\u00a7cOutdated server! I''m still on {0}
+proxy_full=\u00a7cServer is full!
+restart=\u00a7cThe proxy server is restarting
 server_list=\u00a76You may connect to the following servers at this time: 
 server_went_down=\u00a7cThe server you were previously on went down, you have been connected to a fallback server
 total_players=Total players online: {0}
-name_invalid=Username contains invalid characters.
-ping_cannot_connect=\u00a7c[Bungee] Can''t connect to server.
-offline_mode_player=Not authenticated with Minecraft.net
-secure_profile_required=A secure profile is required to join this server.
-secure_profile_expired=Secure profile expired.
-secure_profile_invalid=Secure profile invalid.
+name_invalid=\u00a7cUsername contains invalid characters.
+ping_cannot_connect=\u00a7cCould not request status from target server.
+offline_mode_player=\u00a7cNot authenticated with Minecraft.net
+secure_profile_required=\u00a7cA secure profile is required to join this server.
+secure_profile_expired=\u00a7cSecure profile expired.
+secure_profile_invalid=\u00a7cSecure profile invalid.
 message_needed=\u00a7cYou must supply a message.
 error_occurred_player=\u00a7cAn error occurred while parsing your message. (Hover for details)
 error_occurred_console=\u00a7cAn error occurred while parsing your message: {0}
 click_to_connect=Click to connect to the server
-username_needed=\u00a7cPlease follow this command by a user name.
+username_needed=\u00a7cPlease follow this command by a username.
 user_not_online=\u00a7cThat user is not online.
 user_online_at=\u00a7a{0} \u00a7ris online at {1}
 send_cmd_usage=\u00a7cNot enough arguments, usage: /send <server|player|all|current> <target>
@@ -38,5 +38,5 @@ you_got_summoned=\u00a76Summoned to {0} by {1}
 command_perms_groups=\u00a76You have the following groups: {0}
 command_perms_permission=\u00a79- {0}
 command_ip=\u00a79IP of {0} is {1}
-illegal_chat_characters=\u00a7cillegal characters in chat ({0})
+illegal_chat_characters=\u00a7cIllegal characters in chat ({0})
 kick_message=\u00a7cYou have been kicked off the proxy.