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Waterfall/BungeeCord-Patches/0046-Provide-an-option-to-disable-entity-metadata-rewriti.patch
Aikar ffe3d76ee6
Updated Upstream (BungeeCord) 
Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

BungeeCord Changes:
67c2dfd8 #2794: connection throttle race condition
eeb3c6d3 #2811: Shorten "Cannot request protocol" exception
727281e6 Make all BaseComponent.duplicate methods specific
4e99a325 #2808: TextComponent.duplicate should return TextComponent
3373eb86 #2834: Add support for long array NBT tag
b85df4f2 #2830: CommandSend - replace iterator-while with for-each
2020-05-09 21:44:18 -04:00

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From 7151de9564711a2024fecdbe477cbbb1cb8107f3 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Mon, 14 Jan 2019 03:35:21 +0000
Subject: [PATCH] Provide an option to disable entity metadata rewriting
The work here is derived from the research and guidance of
various members of the minecraft community
This patch provides the ability to disable entity remapping,
which creates various incompatability issues with mods, however,
may also create various issues with mods which do not support this,
hence why the configuration option is provided
diff --git a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
index e0baca9c..f3bced0a 100644
--- a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
+++ b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
@@ -252,4 +252,9 @@ public interface ProxyConfig
* @return should we disable the tab completion limit for 1.13+ clients
*/
boolean isDisableModernTabLimiter();
+
+ /**
+ * @return Should we disable entity metadata rewriting?
+ */
+ boolean isDisableEntityMetadataRewrite();
}
diff --git a/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java b/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
index 4ff8da6d..e860214f 100644
--- a/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
+++ b/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
@@ -42,6 +42,8 @@ public class WaterfallConfiguration extends Configuration {
private int tabThrottle = 1000;
private boolean disableModernTabLimiter = true;
+ private boolean disableEntityMetadataRewrite = false;
+
@Override
public void load() {
super.load();
@@ -53,6 +55,7 @@ public class WaterfallConfiguration extends Configuration {
// Throttling options
tabThrottle = config.getInt("throttling.tab_complete", tabThrottle);
disableModernTabLimiter = config.getBoolean("disable_modern_tab_limiter", disableModernTabLimiter);
+ disableEntityMetadataRewrite = config.getBoolean("disable_entity_metadata_rewrite", disableEntityMetadataRewrite);
}
@Override
@@ -79,4 +82,9 @@ public class WaterfallConfiguration extends Configuration {
public boolean isDisableModernTabLimiter() {
return disableModernTabLimiter;
}
+
+ @Override
+ public boolean isDisableEntityMetadataRewrite() {
+ return disableEntityMetadataRewrite;
+ }
}
diff --git a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
index f594a287..35a19224 100644
--- a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
+++ b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
@@ -228,7 +228,7 @@ public class ServerConnector extends PacketHandler
ch.write( message );
}
- if ( user.getSettings() != null )
+ if (!user.isDisableEntityMetadataRewrite() && user.getSettings() != null )
{
ch.write( user.getSettings() );
}
@@ -262,6 +262,7 @@ public class ServerConnector extends PacketHandler
user.getTabListHandler().onServerChange();
Scoreboard serverScoreboard = user.getServerSentScoreboard();
+ if ( !user.isDisableEntityMetadataRewrite() ) { // Waterfall
for ( Objective objective : serverScoreboard.getObjectives() )
{
user.unsafe().sendPacket( new ScoreboardObjective( objective.getName(), objective.getValue(), ScoreboardObjective.HealthDisplay.fromString( objective.getType() ), (byte) 1 ) );
@@ -274,6 +275,7 @@ public class ServerConnector extends PacketHandler
{
user.unsafe().sendPacket( new net.md_5.bungee.protocol.packet.Team( team.getName() ) );
}
+ } // Waterfall
serverScoreboard.clear();
for ( UUID bossbar : user.getSentBossBars() )
@@ -292,12 +294,33 @@ public class ServerConnector extends PacketHandler
}
user.setDimensionChange( true );
- if ( login.getDimension() == user.getDimension() )
+ if ( !user.isDisableEntityMetadataRewrite() && login.getDimension() == user.getDimension() ) // Waterfall - defer
{
user.unsafe().sendPacket( new Respawn( ( login.getDimension() >= 0 ? -1 : 0 ), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getLevelType() ) );
}
user.setServerEntityId( login.getEntityId() );
+
+ // Waterfall start
+ if ( user.isDisableEntityMetadataRewrite() ) {
+ // Ensure that we maintain consistency
+ user.setClientEntityId( login.getEntityId() );
+
+ // Only send if we are not in the same dimension
+ if (user.getDimension() != login.getDimension()) {
+ user.unsafe().sendPacket( new Respawn(user.getDimension() == 0 ? -1 : 0, login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getLevelType()));
+ }
+
+ Login modLogin = new Login( login.getEntityId(),login.getGameMode(), login.getDimension(), login.getSeed(),
+ login.getDifficulty(), login.getMaxPlayers(), login.getLevelType(), login.getViewDistance(), login.isReducedDebugInfo(), login.isNormalRespawn() );
+ user.unsafe().sendPacket(modLogin);
+
+ // Only send if we're in the same dimension
+ if (user.getDimension() == login.getDimension()) {
+ user.unsafe().sendPacket( new Respawn(user.getDimension() == 0 ? -1 : 0, login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getLevelType()));
+ }
+ }
+ // Waterfall end
user.unsafe().sendPacket( new Respawn( login.getDimension(), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getLevelType() ) );
if ( user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_14 )
{
diff --git a/proxy/src/main/java/net/md_5/bungee/UserConnection.java b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
index 0c36ab52..87cff4ff 100644
--- a/proxy/src/main/java/net/md_5/bungee/UserConnection.java
+++ b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
@@ -745,4 +745,10 @@ public final class UserConnection implements ProxiedPlayer
{
return serverSentScoreboard;
}
+
+ // Waterfall start
+ public boolean isDisableEntityMetadataRewrite() {
+ return entityRewrite == net.md_5.bungee.entitymap.EntityMap_Dummy.INSTANCE;
+ }
+ // Waterfall end
}
diff --git a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
index cfd25859..f845da09 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/DownstreamBridge.java
@@ -601,6 +601,7 @@ public class DownstreamBridge extends PacketHandler
@Override
public void handle(EntityEffect entityEffect) throws Exception
{
+ if (con.isDisableEntityMetadataRewrite()) return; // Waterfall
// Don't send any potions when switching between servers (which involves a handshake), which can trigger a race
// condition on the client.
if (this.con.getForgeClientHandler().isForgeUser() && !this.con.getForgeClientHandler().isHandshakeComplete()) {
@@ -612,6 +613,7 @@ public class DownstreamBridge extends PacketHandler
@Override
public void handle(EntityRemoveEffect removeEffect) throws Exception
{
+ if (con.isDisableEntityMetadataRewrite()) return; // Waterfall
con.getPotions().remove(rewriteEntityId(removeEffect.getEntityId()), removeEffect.getEffectId());
}
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
index ec84f339..bc1de55a 100644
--- a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap.java
@@ -6,6 +6,7 @@ import io.netty.buffer.ByteBufInputStream;
import java.io.DataInputStream;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
+
import net.md_5.bungee.protocol.DefinedPacket;
import net.md_5.bungee.protocol.ProtocolConstants;
import se.llbit.nbt.NamedTag;
@@ -27,6 +28,11 @@ public abstract class EntityMap
// Returns the correct entity map for the protocol version
public static EntityMap getEntityMap(int version)
{
+ // Waterfall start
+ if (net.md_5.bungee.api.ProxyServer.getInstance().getConfig().isDisableEntityMetadataRewrite()) {
+ return EntityMap_Dummy.INSTANCE;
+ }
+ // Waterfall end
switch ( version )
{
case ProtocolConstants.MINECRAFT_1_8:
@@ -277,7 +283,13 @@ public abstract class EntityMap
DefinedPacket.readVarInt( packet );
break;
default:
- throw new IllegalArgumentException( "Unknown meta type " + type );
+ // Waterfall start - Don't lie
+ if ( protocolVersion >= ProtocolConstants.MINECRAFT_1_13 )
+ {
+ type++;
+ }
+ throw new IllegalArgumentException( "Unknown meta type " + type + ": Using mods? refer to disable_entity_metadata_rewrite in waterfall.yml" );
+ // Waterfall end
}
}
diff --git a/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_Dummy.java b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_Dummy.java
new file mode 100644
index 00000000..cb81d1dd
--- /dev/null
+++ b/proxy/src/main/java/net/md_5/bungee/entitymap/EntityMap_Dummy.java
@@ -0,0 +1,30 @@
+
+package net.md_5.bungee.entitymap;
+
+import io.netty.buffer.ByteBuf;
+// Waterfall start
+
+public class EntityMap_Dummy extends EntityMap {
+
+ public static final EntityMap_Dummy INSTANCE = new EntityMap_Dummy();
+
+ EntityMap_Dummy() {
+ }
+
+ @Override
+ public void rewriteServerbound(ByteBuf packet, int oldId, int newId) {
+ }
+
+ @Override
+ public void rewriteServerbound(ByteBuf packet, int oldId, int newId, int protocolVersion) {
+ }
+
+ @Override
+ public void rewriteClientbound(ByteBuf packet, int oldId, int newId) {
+ }
+
+ @Override
+ public void rewriteClientbound(ByteBuf packet, int oldId, int newId, int protocolVersion) {
+ }
+}
+// Waterfall end
\ No newline at end of file
--
2.26.2
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