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#3363, #3369: Implement new ServerData packet to stop MOTD data from servers

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Outfluencer 2022-08-14 11:32:35 +10:00 committed by md_5
parent 78ca16dfe3
commit dd3f820040
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GPG Key ID: E8E901AC7C617C11
4 changed files with 100 additions and 0 deletions
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5
protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java
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@ -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
{
}
}

7
protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java
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@ -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,

78
protocol/src/main/java/net/md_5/bungee/protocol/packet/ServerData.java Normal file
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@ -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 );
} 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 );
}
}

10
proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
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@ -59,6 +59,7 @@ 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;
@ -678,6 +679,15 @@ public class DownstreamBridge extends PacketHandler
}
}
@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()
{