Waterfall/BungeeCord-Patches/0030-Fix-potion-race-condition-on-Forge-1.8.9.patch
Shane Freeder c7448e5017
Updated Upstream (BungeeCord)
Upstream has released updates that appear 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:
e642b9dd Minecraft 24w13a support
db623d10 #3640: Bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.1 to 3.2.2
61bb9f5b #3637: Bump org.projectlombok:lombok from 1.18.30 to 1.18.32
9551b453 #3639: Bump io.netty:netty-bom from 4.1.107.Final to 4.1.108.Final
dc680b87 #3636: Bump org.apache.maven.plugins:maven-gpg-plugin from 3.1.0 to 3.2.1
156eda78 #3635: Bump org.apache.maven.plugins:maven-compiler-plugin
31be68af Minecraft 24w12a support
ffa011c7 #3622: Revert "#3256: Allow - and . in online mode as some accounts still have these…"
22536c11 #3618: Bump org.apache.maven.plugins:maven-shade-plugin from 3.5.1 to 3.5.2
2394e204 #3629: Fix scoreboard team data reading
1b88a847 Minecraft 24w10a support
2024-03-29 18:03:46 +00:00

221 lines
7.8 KiB
Diff

From 26a6b2a630825182a7712505f7212c1bf397d446 Mon Sep 17 00:00:00 2001
From: Aaron Hill <aa1ronham@gmail.com>
Date: Thu, 15 Sep 2016 22:38:37 +0200
Subject: [PATCH] Fix potion race condition on Forge 1.8.9
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java b/protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java
index 7f0b6105..14ad2e71 100644
--- a/protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/AbstractPacketHandler.java
@@ -268,4 +268,14 @@ public abstract class AbstractPacketHandler
public void handle(CookieResponse cookieResponse) throws Exception
{
}
+
+ // Waterfall start
+ public void handle(net.md_5.bungee.protocol.packet.EntityEffect entityEffect) throws Exception
+ {
+ }
+
+ public void handle(net.md_5.bungee.protocol.packet.EntityRemoveEffect removeEffect) throws Exception
+ {
+ }
+ // Waterfall end
}
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java
new file mode 100644
index 00000000..d11a9ea9
--- /dev/null
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityEffect.java
@@ -0,0 +1,45 @@
+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;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = false)
+public class EntityEffect extends DefinedPacket {
+
+ private int entityId;
+ private int effectId;
+ private int amplifier;
+ private int duration;
+ private boolean hideParticles;
+
+ @Override
+ public void read(ByteBuf buf) {
+ this.entityId = readVarInt(buf);
+ this.effectId = buf.readUnsignedByte();
+ this.amplifier = buf.readUnsignedByte();
+ this.duration = readVarInt(buf);
+ this.hideParticles = buf.readBoolean();
+ }
+
+ @Override
+ public void write(ByteBuf buf) {
+ writeVarInt(this.entityId, buf);
+ buf.writeByte(this.effectId);
+ buf.writeByte(this.amplifier);
+ writeVarInt(this.duration, buf);
+ buf.writeBoolean(this.hideParticles);
+ }
+
+ @Override
+ public void handle(AbstractPacketHandler handler) throws Exception {
+ handler.handle(this);
+ }
+}
diff --git a/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java
new file mode 100644
index 00000000..7ed2dc3a
--- /dev/null
+++ b/protocol/src/main/java/net/md_5/bungee/protocol/packet/EntityRemoveEffect.java
@@ -0,0 +1,36 @@
+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;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@EqualsAndHashCode(callSuper = false)
+public class EntityRemoveEffect extends DefinedPacket {
+
+ private int entityId;
+ private int effectId;
+
+ @Override
+ public void read(ByteBuf buf) {
+ this.entityId = readVarInt(buf);
+ this.effectId = buf.readUnsignedByte();
+ }
+
+ @Override
+ public void write(ByteBuf buf) {
+ writeVarInt(this.entityId, buf);
+ buf.writeByte(effectId);
+ }
+
+ @Override
+ public void handle(AbstractPacketHandler handler) throws Exception {
+ handler.handle(this);
+ }
+}
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 7e36c0eb..86223e17 100644
--- a/proxy/src/main/java/net/md_5/bungee/UserConnection.java
+++ b/proxy/src/main/java/net/md_5/bungee/UserConnection.java
@@ -1,7 +1,9 @@
package net.md_5.bungee;
import com.google.common.base.Preconditions;
+import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Multimap;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
@@ -129,6 +131,10 @@ public final class UserConnection implements ProxiedPlayer
private final Scoreboard serverSentScoreboard = new Scoreboard();
@Getter
private final Collection<UUID> sentBossBars = new HashSet<>();
+ // Waterfall start
+ @Getter
+ private final Multimap<Integer, Integer> potions = HashMultimap.create();
+ // Waterfall end
@Getter
@Setter
private String lastCommandTabbed;
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 d4036c5d..ad9fc042 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
@@ -753,6 +753,32 @@ public class DownstreamBridge extends PacketHandler
}
}
+ // Waterfall start
+ @Override
+ public void handle(net.md_5.bungee.protocol.packet.EntityEffect entityEffect) throws Exception
+ {
+ // 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()) {
+ throw CancelSendSignal.INSTANCE;
+ }
+ con.getPotions().put(rewriteEntityId(entityEffect.getEntityId()), entityEffect.getEffectId());
+ }
+
+ @Override
+ public void handle(net.md_5.bungee.protocol.packet.EntityRemoveEffect removeEffect) throws Exception
+ {
+ con.getPotions().remove(rewriteEntityId(removeEffect.getEntityId()), removeEffect.getEffectId());
+ }
+
+ private int rewriteEntityId(int entityId) {
+ if (entityId == con.getServerEntityId()) {
+ return con.getClientEntityId();
+ }
+ return entityId;
+ }
+ // Waterfall end
+
@Override
public void handle(Respawn respawn)
{
diff --git a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
index d15044f4..bea2bbff 100644
--- a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
+++ b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandler.java
@@ -9,6 +9,8 @@ import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import net.md_5.bungee.UserConnection;
+import net.md_5.bungee.protocol.ProtocolConstants;
+import net.md_5.bungee.protocol.packet.EntityRemoveEffect;
import net.md_5.bungee.protocol.packet.PluginMessage;
/**
@@ -94,9 +96,23 @@ public class ForgeClientHandler
public void resetHandshake()
{
state = ForgeClientHandshakeState.HELLO;
+
+ // This issue only exists in Forge 1.8.9
+ if (this.con.getPendingConnection().getVersion() == ProtocolConstants.MINECRAFT_1_8) {
+ this.resetAllThePotions(con);
+ }
+
con.unsafe().sendPacket( ForgeConstants.FML_RESET_HANDSHAKE );
}
+ private void resetAllThePotions(UserConnection con) {
+ // Just to be sure
+ for (Map.Entry<Integer, Integer> entry: con.getPotions().entries()) {
+ con.unsafe().sendPacket(new EntityRemoveEffect(entry.getKey(), entry.getValue()));
+ }
+ con.getPotions().clear();
+ }
+
/**
* Sends the server mod list to the client, or stores it for sending later.
*
--
2.44.0