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.

bootstrap/pom.xml

@@ -52,7 +52,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.5.1</version>
+                <version>3.5.2</version>
                 <executions>
                     <execution>
                         <phase>package</phase>

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

@@ -1,5 +1,6 @@
 package net.md_5.bungee.protocol;
 
+import java.util.function.Function;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -31,4 +32,26 @@ public final class Either<L, R>
     {
         return new Either<>( null, right );
     }
+
+    public L getLeftOrCompute(Function<R, L> function)
+    {
+        if ( isLeft() )
+        {
+            return left;
+        } else
+        {
+            return function.apply( right );
+        }
+    }
+
+    public R getRightOrCompute(Function<L, R> function)
+    {
+        if ( isRight() )
+        {
+            return right;
+        } else
+        {
+            return function.apply( left );
+        }
+    }
 }

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

@@ -45,7 +45,7 @@ public class ProtocolConstants
     public static final int MINECRAFT_1_20 = 763;
     public static final int MINECRAFT_1_20_2 = 764;
     public static final int MINECRAFT_1_20_3 = 765;
-    public static final int MINECRAFT_1_20_5 = 1073742000;
+    public static final int MINECRAFT_1_20_5 = 1073742003;
     public static final List<String> SUPPORTED_VERSIONS;
     public static final List<Integer> SUPPORTED_VERSION_IDS;
 

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

@@ -312,6 +312,7 @@ public class Commands extends DefinedPacket
         private static final ArgumentSerializer[] IDS_1_19_3;
         private static final ArgumentSerializer[] IDS_1_19_4;
         private static final ArgumentSerializer[] IDS_1_20_3;
+        private static final ArgumentSerializer[] IDS_1_20_5;
         private static final Map<Class<?>, ProperArgumentSerializer<?>> PROPER_PROVIDERS = new HashMap<>();
         //
         private static final ArgumentSerializer<Void> VOID = new ArgumentSerializer<Void>()
@@ -868,6 +869,61 @@ public class Commands extends DefinedPacket
                 get( "minecraft:uuid", VOID ),
                 get( "minecraft:heightmap", VOID )
             };
+
+            IDS_1_20_5 = new ArgumentSerializer[]
+            {
+                get( "brigadier:bool", VOID ),
+                get( "brigadier:float", FLOAT_RANGE ),
+                get( "brigadier:double", DOUBLE_RANGE ),
+                get( "brigadier:integer", INTEGER_RANGE ),
+                get( "brigadier:long", LONG_RANGE ),
+                get( "brigadier:string", STRING ),
+                get( "minecraft:entity", BYTE ),
+                get( "minecraft:game_profile", VOID ),
+                get( "minecraft:block_pos", VOID ),
+                get( "minecraft:column_pos", VOID ),
+                get( "minecraft:vec3", VOID ),
+                get( "minecraft:vec2", VOID ),
+                get( "minecraft:block_state", VOID ),
+                get( "minecraft:block_predicate", VOID ),
+                get( "minecraft:item_stack", VOID ),
+                get( "minecraft:item_predicate", VOID ),
+                get( "minecraft:color", VOID ),
+                get( "minecraft:component", VOID ),
+                get( "minecraft:style", VOID ),
+                get( "minecraft:message", VOID ),
+                get( "minecraft:nbt_compound_tag", VOID ),
+                get( "minecraft:nbt_tag", VOID ),
+                get( "minecraft:nbt_path", VOID ),
+                get( "minecraft:objective", VOID ),
+                get( "minecraft:objective_criteria", VOID ),
+                get( "minecraft:operation", VOID ),
+                get( "minecraft:particle", VOID ),
+                get( "minecraft:angle", VOID ),
+                get( "minecraft:rotation", VOID ),
+                get( "minecraft:scoreboard_slot", VOID ),
+                get( "minecraft:score_holder", BYTE ),
+                get( "minecraft:swizzle", VOID ),
+                get( "minecraft:team", VOID ),
+                get( "minecraft:item_slot", VOID ),
+                get( "minecraft:item_slots", VOID ),
+                get( "minecraft:resource_location", VOID ),
+                get( "minecraft:function", VOID ),
+                get( "minecraft:entity_anchor", VOID ),
+                get( "minecraft:int_range", VOID ),
+                get( "minecraft:float_range", VOID ),
+                get( "minecraft:dimension", VOID ),
+                get( "minecraft:gamemode", VOID ),
+                get( "minecraft:time", INTEGER ),
+                get( "minecraft:resource_or_tag", RAW_STRING ),
+                get( "minecraft:resource_or_tag_key", RAW_STRING ),
+                get( "minecraft:resource", RAW_STRING ),
+                get( "minecraft:resource_key", RAW_STRING ),
+                get( "minecraft:template_mirror", VOID ),
+                get( "minecraft:template_rotation", VOID ),
+                get( "minecraft:uuid", VOID ),
+                get( "minecraft:heightmap", VOID )
+            };
         }
 
         private static void register(String name, ArgumentSerializer serializer)
@@ -1287,7 +1343,10 @@ public class Commands extends DefinedPacket
             {
                 key = readVarInt( buf );
 
-                if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_3 )
+                if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_5 )
+                {
+                    reader = IDS_1_20_5[(Integer) key];
+                } else if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_3 )
                 {
                     reader = IDS_1_20_3[(Integer) key];
                 } else if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_19_4 )

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

@@ -133,7 +133,13 @@ public class Login extends DefinedPacket
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_2 )
         {
             limitedCrafting = buf.readBoolean();
+            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_5 )
+            {
+                dimension = readVarInt( buf );
+            } else
+            {
                 dimension = readString( buf );
+            }
             worldName = readString( buf );
             seed = buf.readLong();
             gameMode = buf.readUnsignedByte();
@@ -254,7 +260,13 @@ public class Login extends DefinedPacket
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_2 )
         {
             buf.writeBoolean( limitedCrafting );
+            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_5 )
+            {
+                writeVarInt( (Integer) dimension, buf );
+            } else
+            {
                 writeString( (String) dimension, buf );
+            }
             writeString( worldName, buf );
             buf.writeLong( seed );
             buf.writeByte( gameMode );

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

@@ -36,7 +36,10 @@ public class Respawn extends DefinedPacket
     {
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16 )
         {
-            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16_2 && protocolVersion < ProtocolConstants.MINECRAFT_1_19 )
+            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_5 )
+            {
+                dimension = readVarInt( buf );
+            } else if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16_2 && protocolVersion < ProtocolConstants.MINECRAFT_1_19 )
             {
                 dimension = readTag( buf, protocolVersion );
             } else
@@ -92,7 +95,10 @@ public class Respawn extends DefinedPacket
     {
         if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16 )
         {
-            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16_2 && protocolVersion < ProtocolConstants.MINECRAFT_1_19 )
+            if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_20_5 )
+            {
+                writeVarInt( (Integer) dimension, buf );
+            } else if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_16_2 && protocolVersion < ProtocolConstants.MINECRAFT_1_19 )
             {
                 writeTag( (Tag) dimension, buf, protocolVersion );
             } else

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

@@ -243,7 +243,7 @@ public class ServerConnector extends PacketHandler
             user.getForgeClientHandler().setHandshakeComplete();
         }
 
-        if ( user.getServer() == null || !( login.getDimension() instanceof Integer ) )
+        if ( user.getServer() == null || user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_16 )
         {
             // Once again, first connection
             user.setClientEntityId( login.getEntityId() );

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

@@ -272,9 +272,9 @@ public class DownstreamBridge extends PacketHandler
         {
             if ( team.getMode() == 0 || team.getMode() == 2 )
             {
-                t.setDisplayName( ComponentSerializer.toString( team.getDisplayName() ) );
-                t.setPrefix( ComponentSerializer.toString( team.getPrefix() ) );
-                t.setSuffix( ComponentSerializer.toString( team.getSuffix() ) );
+                t.setDisplayName( team.getDisplayName().getLeftOrCompute( ComponentSerializer::toString ) );
+                t.setPrefix( team.getPrefix().getLeftOrCompute( ComponentSerializer::toString ) );
+                t.setSuffix( team.getSuffix().getLeftOrCompute( ComponentSerializer::toString ) );
                 t.setFriendlyFire( team.getFriendlyFire() );
                 t.setNameTagVisibility( team.getNameTagVisibility() );
                 t.setCollisionRule( team.getCollisionRule() );

proxy/src/main/java/net/md_5/bungee/util/AllowedCharacters.java

@@ -17,7 +17,7 @@ public final class AllowedCharacters
     {
         if ( onlineMode )
         {
-            return ( c >= 'a' && c <= 'z' ) || ( c >= '0' && c <= '9' ) || ( c >= 'A' && c <= 'Z' ) || c == '_' || c == '.' || c == '-';
+            return ( c >= 'a' && c <= 'z' ) || ( c >= '0' && c <= '9' ) || ( c >= 'A' && c <= 'Z' ) || c == '_';
         } else
         {
             // Don't allow spaces, Yaml config doesn't support them