mirror of
https://github.com/PaperMC/Paper.git
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7c640a1ae2
* fixup patch and rebuild * Updated Upstream (Bukkit/CraftBukkit/Spigot) 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 Bukkit Changes: bde198c9 SPIGOT-5246: PlayerQuitEvent.get/setQuitMessage() is incorrectly marked as NotNull 24ad5a79 SPIGOT-5240: Vector.angle not valid for angles very close to each other a143db9a SPIGOT-5231: ShotAtAngle API for Fireworks 10db5c3d SPIGOT-5226: Update Javadoc of PlayerDeathEvent CraftBukkit Changes:1ec1b05eSPIGOT-5245: Unneeded cast to WorldNBTStorage in CraftWorld#getWorldFoldere5e8eec2SPIGOT-5241: setAttributeModifiers does not work on untouched stack803eaa31SPIGOT-5231: ShotAtAngle API for Fireworks7881d2aeSPIGOT-5237: Horses, pigs do not drop their inventory06efc9ecDon't accept connections until all plugins have enabledda62a66aSPIGOT-5225: World handle isn't closed if world is unloaded without saving104b3831SPIGOT-5222: Cannot get Long values from Entity memoryf0b3fe43SPIGOT-5220: Server CPU usage reaches 100% when stdin is null Spigot Changes: e5b1b5db SPIGOT-5235: Destroy expired area effect clouds / fireworks that are inactive cbcc8e87 Make region files more reliable to write to 8887c5f4 Remove redundant late-bind option dac29063 Rebuild patches * Preserve old flush on save flag for reliable regionfiles Originally this patch was in paper * Fix some issues with the death event - Entities potentially entering a glitched state to the client where they appear to be falling over - Donkeys losing their chest if the event was cancelled (only an issue since the upstream merge) - Some wither death logic running for an entity killed by a wither
248 lines
13 KiB
Diff
248 lines
13 KiB
Diff
From 8c38c2390cee11240ea12602dbbd440aeb5e0477 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 21 Jul 2018 14:27:34 -0400
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Subject: [PATCH] Duplicate UUID Resolve Option
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Due to a bug in https://github.com/PaperMC/Paper/commit/2e29af3df05ec0a383f48be549d1c03200756d24
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which was added all the way back in March of 2016, it was unknown (potentially not at the time)
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that an entity might actually change the seed of the random object.
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At some point, EntitySquid did start setting the seed. Due to this shared random, this caused
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every entity to use a Random object with a predictable seed.
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This has caused entities to potentially generate with the same UUID....
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Over the years, servers have had entities disappear, but no sign of trouble
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because CraftBukkit removed the log lines indicating that something was wrong.
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We have fixed the root issue causing duplicate UUID's, however we now have chunk
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files full of entities that have the same UUID as another entity!
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When these chunks load, the 2nd entity will not be added to the world correctly.
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If that chunk loads in a different order in the future, then it will reverse and the
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missing one is now the one added to the world and not the other. This results in very
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inconsistent entity behavior.
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This change allows you to recover any duplicate entity by generating a new UUID for it.
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This also lets you delete them instead if you don't want to risk having new entities added to
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the world that you previously did not see.
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But for those who are ok with leaving this inconsistent behavior, you may use WARN or NOTHING options.
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It is recommended you regenerate the entities, as these were legit entities, and deserve your love.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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index 91c809b7ce..d8bb13693d 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
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@@ -444,4 +444,43 @@ public class PaperWorldConfig {
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log("Using vanilla redstone algorithm.");
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}
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}
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+
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+ public enum DuplicateUUIDMode {
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+ SAFE_REGEN, DELETE, NOTHING, WARN
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+ }
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+ public DuplicateUUIDMode duplicateUUIDMode = DuplicateUUIDMode.SAFE_REGEN;
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+ public int duplicateUUIDDeleteRange = 32;
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+ private void repairDuplicateUUID() {
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+ String desiredMode = getString("duplicate-uuid-resolver", "saferegen").toLowerCase().trim();
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+ duplicateUUIDDeleteRange = getInt("duplicate-uuid-saferegen-delete-range", duplicateUUIDDeleteRange);
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+ switch (desiredMode.toLowerCase()) {
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+ case "regen":
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+ case "regenerate":
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+ case "saferegen":
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+ case "saferegenerate":
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+ duplicateUUIDMode = DuplicateUUIDMode.SAFE_REGEN;
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+ log("Duplicate UUID Resolve: Regenerate New UUID if distant (Delete likely duplicates within " + duplicateUUIDDeleteRange + " blocks)");
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+ break;
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+ case "remove":
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+ case "delete":
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+ duplicateUUIDMode = DuplicateUUIDMode.DELETE;
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+ log("Duplicate UUID Resolve: Delete Entity");
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+ break;
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+ case "silent":
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+ case "nothing":
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+ duplicateUUIDMode = DuplicateUUIDMode.NOTHING;
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+ logError("Duplicate UUID Resolve: Do Nothing (no logs) - Warning, may lose indication of bad things happening");
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+ break;
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+ case "log":
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+ case "warn":
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+ duplicateUUIDMode = DuplicateUUIDMode.WARN;
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+ log("Duplicate UUID Resolve: Warn (do nothing but log it happened, may be spammy)");
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+ break;
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+ default:
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+ duplicateUUIDMode = DuplicateUUIDMode.WARN;
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+ logError("Warning: Invalid duplicate-uuid-resolver config " + desiredMode + " - must be one of: regen, delete, nothing, warn");
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+ log("Duplicate UUID Resolve: Warn (do nothing but log it happened, may be spammy)");
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+ break;
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+ }
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 09e010e670..ee8f801745 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -397,6 +397,7 @@ public class Chunk implements IChunkAccess {
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if (i != this.loc.x || j != this.loc.z) {
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Chunk.LOGGER.warn("Wrong location! ({}, {}) should be ({}, {}), {}", i, j, this.loc.x, this.loc.z, entity);
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entity.dead = true;
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+ return; // Paper
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}
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int k = MathHelper.floor(entity.locY / 16.0D);
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index f87514a200..55c73ffcaa 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -2728,6 +2728,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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});
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}
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+ public void setUUID(UUID uuid) { a(uuid); } // Paper - OBFHELPER
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public void a(UUID uuid) {
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this.uniqueID = uuid;
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this.ap = this.uniqueID.toString();
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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 6379d2d84f..67d011745f 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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@@ -1,6 +1,7 @@
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package net.minecraft.server;
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import co.aikar.timings.Timing; // Paper
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+import com.destroystokyo.paper.PaperWorldConfig; // Paper
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import com.google.common.collect.ImmutableList;
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import com.google.common.collect.Iterables;
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import com.google.common.collect.ComparisonChain; // Paper
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@@ -22,13 +23,16 @@ import java.io.File;
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import java.io.IOException;
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import java.io.Writer;
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import java.util.ArrayList;
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+import java.util.HashMap; // Paper
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import java.util.Iterator;
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import java.util.List;
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+import java.util.Map; // Paper
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import java.util.Objects;
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import java.util.Optional;
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import java.util.Queue;
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import java.util.Set;
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import java.util.concurrent.CancellationException;
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+import java.util.UUID; // Paper
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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import java.util.concurrent.Executor;
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@@ -593,12 +597,49 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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for (int j = 0; j < i; ++j) {
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List<Entity> entityslice = aentityslice[j]; // Spigot
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- Iterator iterator = entityslice.iterator();
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- while (iterator.hasNext()) {
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- Entity entity = (Entity) iterator.next();
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+ // Paper start
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+ PaperWorldConfig.DuplicateUUIDMode mode = world.paperConfig.duplicateUUIDMode;
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+ if (mode == PaperWorldConfig.DuplicateUUIDMode.WARN || mode == PaperWorldConfig.DuplicateUUIDMode.DELETE || mode == PaperWorldConfig.DuplicateUUIDMode.SAFE_REGEN) {
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+ Map<UUID, Entity> thisChunk = new HashMap<>();
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+ for (Iterator<Entity> iterator = ((List<Entity>) entityslice).iterator(); iterator.hasNext(); ) {
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+ Entity entity = iterator.next();
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+ if (entity.dead || entity.valid) continue;
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+ Entity other = ((WorldServer) world).getEntity(entity.uniqueID);
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+ if (other == null || other.dead) {
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+ other = thisChunk.get(entity.uniqueID);
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+ }
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+
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+ if (mode == PaperWorldConfig.DuplicateUUIDMode.SAFE_REGEN && other != null && !other.dead
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+ && java.util.Objects.equals(other.getSaveID(), entity.getSaveID())
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+ && entity.getBukkitEntity().getLocation().distance(other.getBukkitEntity().getLocation()) < world.paperConfig.duplicateUUIDDeleteRange
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+ ) {
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+ if (World.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + " because it was near the duplicate and likely an actual duplicate. See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ entity.dead = true;
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+ iterator.remove();
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+ continue;
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+ }
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+ if (other != null && !other.dead) {
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+ switch (mode) {
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+ case SAFE_REGEN: {
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+ entity.setUUID(UUID.randomUUID());
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+ if (World.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", regenerated UUID for " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ break;
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+ }
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+ case DELETE: {
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+ if (World.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", deleted entity " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ entity.dead = true;
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+ iterator.remove();
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+ break;
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+ }
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+ default:
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+ if (World.DEBUG_ENTITIES) LOGGER.warn("[DUPE-UUID] Duplicate UUID found used by " + other + ", doing nothing to " + entity + ". See https://github.com/PaperMC/Paper/issues/1223 for discussion on what this is about.");
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+ break;
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+ }
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+ }
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+
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- if (!(entity instanceof EntityHuman) && !this.world.addEntityChunk(entity)) {
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+ if (!(entity instanceof EntityHuman) && (entity.dead || !this.world.addEntityChunk(entity))) { // Paper
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if (list == null) {
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list = Lists.newArrayList(new Entity[]{entity});
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} else {
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@@ -606,6 +647,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
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}
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}
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}
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+ } // Paper
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}
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if (list != null) {
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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 51f697b2c9..e474237c24 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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@@ -2,6 +2,8 @@ package net.minecraft.server;
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import co.aikar.timings.TimingHistory;
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import co.aikar.timings.Timings;
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+
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+import com.destroystokyo.paper.PaperWorldConfig;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Maps;
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import com.google.common.collect.Queues;
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@@ -988,8 +990,23 @@ public class WorldServer extends World {
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if (entity1 == null) {
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return false;
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} else {
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- WorldServer.LOGGER.error("Keeping entity {} that already exists with UUID {}", EntityTypes.getName(entity1.getEntityType()), entity.getUniqueID().toString()); // CraftBukkit // paper
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- WorldServer.LOGGER.error("Deleting duplicate entity {}", entity); // CraftBukkit // paper
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+ // Paper start
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+ if (entity1.dead) {
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+ unregisterEntity(entity1); // remove the existing entity
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+ return false;
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+ }
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+
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+ if (DEBUG_ENTITIES && entity.world.paperConfig.duplicateUUIDMode != PaperWorldConfig.DuplicateUUIDMode.NOTHING) {
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+ WorldServer.LOGGER.error("Keeping entity {} that already exists with UUID {}", EntityTypes.getName(entity1.getEntityType()), entity.getUniqueID().toString()); // CraftBukkit // paper
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+ WorldServer.LOGGER.error("Deleting duplicate entity {}", entity); // CraftBukkit // paper
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+
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+ if (entity1.addedToWorldStack != null) {
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+ entity1.addedToWorldStack.printStackTrace();
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+ }
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+
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+ getAddToWorldStackTrace(entity).printStackTrace();
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+ }
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+ // Paper end
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return true;
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}
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}
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@@ -1122,7 +1139,7 @@ public class WorldServer extends World {
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}
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Entity old = this.entitiesByUUID.put(entity.getUniqueID(), entity);
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- if (old != null && old.getId() != entity.getId() && old.valid) {
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+ if (old != null && old.getId() != entity.getId() && old.valid && entity.world.paperConfig.duplicateUUIDMode != com.destroystokyo.paper.PaperWorldConfig.DuplicateUUIDMode.NOTHING) { // Paper
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Logger logger = LogManager.getLogger();
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logger.error("Overwrote an existing entity " + old + " with " + entity);
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if (DEBUG_ENTITIES) {
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--
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2.22.0
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