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From a43f0b8886740a47f470609a8325528f2896739a 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 031bf2b1..5fc9324e 100644
--- a/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
+++ b/proxy/src/main/java/net/md_5/bungee/ServerConnector.java
@@ -264,7 +264,8 @@ public class ServerConnector extends PacketHandler
ch.write( new PluginMessage( user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13 ? "minecraft:register" : "REGISTER", Joiner.on( "\0" ).join( registeredChannels ).getBytes( StandardCharsets.UTF_8 ), false ) );
}
- if ( user.getSettings() != null )
+ // Something deeper is going wrong here, but, as it stands, this project is EOL, so, we'll just shove this through.
+ if (user.getSettings() != null && (!user.isDisableEntityMetadataRewrite() || user.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_20_2))
{
ch.write( user.getSettings() );
}
@@ -319,6 +320,7 @@ 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(
@@ -342,6 +344,7 @@ 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() )
@@ -360,13 +363,34 @@ 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( (Integer) login.getDimension() >= 0 ? -1 : 0, login.getWorldName(), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getPreviousGameMode(), login.getLevelType(), login.isDebug(), login.isFlat(),
(byte) 0, login.getDeathLocation(), login.getPortalCooldown() ) );
}
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 ( login.getDimension() != user.getDimension() ) // Waterfall - defer
+ {
+ user.unsafe().sendPacket( new Respawn( (Integer) user.getDimension() >= 0 ? -1 : 0, login.getWorldName(), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getPreviousGameMode(), login.getLevelType(), login.isDebug(), login.isFlat(), (byte) 0, login.getDeathLocation(), login.getPortalCooldown() ) );
+ }
+ Login modLogin = new Login( login.getEntityId(), login.isHardcore(), login.getGameMode(), login.getPreviousGameMode(), login.getWorldNames(), login.getDimensions(), login.getDimension(), login.getWorldName(), login.getSeed(), login.getDifficulty(),
+ (byte) user.getPendingConnection().getListener().getTabListSize(), login.getLevelType(), login.getViewDistance(), login.getSimulationDistance(), login.isReducedDebugInfo(), login.isNormalRespawn(), login.isLimitedCrafting(), login.isDebug(), login.isFlat(), login.getDeathLocation(),
+ login.getPortalCooldown(), login.isSecureProfile() );
+ user.unsafe().sendPacket(modLogin);
+ // Only send if we're in the same dimension
+ if ( login.getDimension() == user.getDimension() ) // Waterfall - defer
+ {
+ user.unsafe().sendPacket( new Respawn( (Integer) login.getDimension() >= 0 ? -1 : 0, login.getWorldName(), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getPreviousGameMode(), login.getLevelType(), login.isDebug(), login.isFlat(), (byte) 0, login.getDeathLocation(), login.getPortalCooldown() ) );
+ }
+ }
+ // Waterfall end
user.unsafe().sendPacket( new Respawn( login.getDimension(), login.getWorldName(), login.getSeed(), login.getDifficulty(), login.getGameMode(), login.getPreviousGameMode(), login.getLevelType(), login.isDebug(), login.isFlat(),
(byte) 0, login.getDeathLocation(), login.getPortalCooldown() ) );
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 86223e17..ee527938 100644
--- a/proxy/src/main/java/net/md_5/bungee/UserConnection.java
+++ b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
@@ -816,4 +816,9 @@ public final class UserConnection implements ProxiedPlayer
unsafe().sendPacket( new Transfer( host, port ) );
}
+ // 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 8a10b057..249c3f46 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
@@ -757,6 +757,7 @@ public class DownstreamBridge extends PacketHandler
@Override
public void handle(net.md_5.bungee.protocol.packet.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()) {
@@ -768,6 +769,7 @@ public class DownstreamBridge extends PacketHandler
@Override
public void handle(net.md_5.bungee.protocol.packet.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 ccebe19f..cb4f1098 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
@@ -27,6 +27,11 @@ 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:
@@ -304,7 +309,13 @@ 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
--
2.43.0.windows.1
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