49 lines
2.9 KiB
Diff
49 lines
2.9 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/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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index fe3aab87de4e1eb60b19352499790fd9b571e169..c9be4ae99458863bf91687c3667d67bc6b37b0f0 100644
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--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
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+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
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@@ -1442,6 +1442,14 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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protected 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.world != this.world || this.trackedEntities.containsKey(entity.getId())) {
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+ new Throwable("[ERROR] Illegal PlayerChunkMap::addEntity for world " + this.world.getWorld().getName()
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+ + ": " + entity + (this.trackedEntities.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""))
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+ .printStackTrace();
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+ return;
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+ }
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+ // Paper end
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if (!(entity instanceof EntityComplexPart)) {
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EntityTypes<?> entitytypes = entity.getEntityType();
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int i = entitytypes.getChunkRange() * 16;
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diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
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index f792ff541793855d9ed0b60f5990b6fdfa303995..2609ae63556053adccdce19677d2e52aaab4ebf6 100644
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--- a/src/main/java/net/minecraft/server/WorldServer.java
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+++ b/src/main/java/net/minecraft/server/WorldServer.java
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@@ -1353,7 +1353,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
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}
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}
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- this.getChunkProvider().addEntity(entity);
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+ // this.getChunkProvider().addEntity(entity); // Paper - moved down below valid=true
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// CraftBukkit start - SPIGOT-5278
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if (entity instanceof EntityDrowned) {
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this.navigators.add(((EntityDrowned) entity).navigationWater);
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@@ -1364,6 +1364,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
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this.navigators.add(((EntityInsentient) entity).getNavigation());
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}
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entity.valid = true; // CraftBukkit
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+ this.getChunkProvider().addEntity(entity); // Paper - from above to be below valid=true
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// Paper start - Set origin location when the entity is being added to the world
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if (entity.origin == null) {
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entity.origin = entity.getBukkitEntity().getLocation();
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