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#1939: Fix server brand; prevent bungee-bungee connections.

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This commit is contained in:
md_5 2016-08-20 11:43:48 +10:00
parent 11c7b246e0
commit 504d3c0529
3 changed files with 14 additions and 2 deletions
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8
protocol/src/main/java/net/md_5/bungee/protocol/DefinedPacket.java
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@ -48,6 +48,14 @@ public abstract class DefinedPacket
buf.writeBytes( b );
}
public static byte[] toArray(ByteBuf buf)
{
byte[] ret = new byte[ buf.readableBytes() ];
buf.readBytes( ret );
return ret;
}
public static byte[] readArray(ByteBuf buf)
{
return readArray( buf, buf.readableBytes() );

2
proxy/src/main/java/net/md_5/bungee/ServerConnector.java
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@ -199,7 +199,7 @@ public class ServerConnector extends PacketHandler
ByteBuf brand = ByteBufAllocator.DEFAULT.heapBuffer();
DefinedPacket.writeString( bungee.getName() + " (" + bungee.getVersion() + ")", brand );
user.unsafe().sendPacket( new PluginMessage( "MC|Brand", DefinedPacket.readArray( brand ), handshakeHandler.isServerForge() ) );
user.unsafe().sendPacket( new PluginMessage( "MC|Brand", DefinedPacket.toArray( brand ), handshakeHandler.isServerForge() ) );
brand.release();
} else
{

6
proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
View File

@ -1,6 +1,7 @@
package net.md_5.bungee.connection;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.io.ByteArrayDataOutput;
import com.google.common.io.ByteStreams;
import java.io.DataInput;
@ -233,9 +234,12 @@ public class DownstreamBridge extends PacketHandler
ByteBuf brand = Unpooled.wrappedBuffer( pluginMessage.getData() );
String serverBrand = DefinedPacket.readString( brand );
brand.release();
Preconditions.checkState( !serverBrand.contains( bungee.getName() ), "Cannot connect proxy to itself!" );
brand = ByteBufAllocator.DEFAULT.heapBuffer();
DefinedPacket.writeString( bungee.getName() + " (" + bungee.getVersion() + ")" + " <- " + serverBrand, brand );
pluginMessage.setData( DefinedPacket.readArray( brand ) );
pluginMessage.setData( DefinedPacket.toArray( brand ) );
brand.release();
// changes in the packet are ignored so we need to send it manually
con.unsafe().sendPacket( pluginMessage );