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48 lines
3.0 KiB
Diff
48 lines
3.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 2 Apr 2020 01:42:39 -0400
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Subject: [PATCH] Prevent Double PlayerChunkMap adds crashing server
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Suspected case would be around the technique used in .stopRiding
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Stack will identify any causer of this and warn instead of crashing.
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diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
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index 1f9efff4ddccf2569fdfe42e6cbc92792643d0ea..876200db872bce89976329c4d6c6fbe9fd155f24 100644
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--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
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+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
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@@ -993,6 +993,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
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public void addEntity(Entity entity) {
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org.spigotmc.AsyncCatcher.catchOp("entity track"); // Spigot
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+ // Paper start - ignore and warn about illegal addEntity calls instead of crashing server
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+ if (!entity.valid || entity.level() != this.level || this.entityMap.containsKey(entity.getId())) {
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+ LOGGER.error("Illegal ChunkMap::addEntity for world " + this.level.getWorld().getName()
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+ + ": " + entity + (this.entityMap.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""), new Throwable());
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+ return;
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+ }
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+ // Paper end
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if (!(entity instanceof EnderDragonPart)) {
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EntityType<?> entitytypes = entity.getType();
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int i = entitytypes.clientTrackingRange() * 16;
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index 2480f05dd9ecb2d68ccf193354872ae8cb4009f3..bd40d4056fbf237f2a3f6c7178bed699f9bdf389 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -2514,7 +2514,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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public void onTrackingStart(Entity entity) {
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org.spigotmc.AsyncCatcher.catchOp("entity register"); // Spigot
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- ServerLevel.this.getChunkSource().addEntity(entity);
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+ // ServerLevel.this.getChunkSource().addEntity(entity); // Paper - moved down below valid=true
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if (entity instanceof ServerPlayer) {
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ServerPlayer entityplayer = (ServerPlayer) entity;
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@@ -2549,6 +2549,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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entity.updateDynamicGameEventListener(DynamicGameEventListener::add);
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entity.inWorld = true; // CraftBukkit - Mark entity as in world
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entity.valid = true; // CraftBukkit
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+ ServerLevel.this.getChunkSource().addEntity(entity);
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// Paper start - Set origin location when the entity is being added to the world
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if (entity.getOriginVector() == null) {
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entity.setOrigin(entity.getBukkitEntity().getLocation());
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