mirror of
https://github.com/PaperMC/Paper.git
synced 2024-09-09 13:28:36 +02:00
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: 18cda936 Fix variant of unloadChunkRequest that was incorrectly never deprecated 00763e1b Deprecate some methods 35a83d54 SPIGOT-4572: Make default no permission message clearer 6163343d Fix some misplaced material enum entries 8736469c Fix typo in TechnicalPiston documentation CraftBukkit Changes:0c715b32
SPIGOT-4579: Shulker boxes not dropping in creative50fbc3f1
SPIGOT-4576: Fix attributes in itemstack internal data being lost8059a937
SPIGOT-4577: Fix loss of int/double custom tags when serialized to yaml07e504c3
Clarify exception thrown when setting drop chance for player inventory98b862ad
Fix duplicate iron golem add843cee65
Fix a bunch of duplicate EntityCombustEvent calls43855624
SPIGOT-4571: EntityCombustEvent not firing for phantoms
224 lines
12 KiB
Diff
224 lines
12 KiB
Diff
From a26662d070c24ebf90d5d8f440e20d12cf04e5cc 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 92acfa6fb8..05509e4fdb 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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@@ -454,4 +454,43 @@ public class PaperWorldConfig {
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log("Bed Search Radius: " + bedSearchRadius);
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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 1c1f39524d..edae53b825 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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@@ -1,5 +1,10 @@
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package net.minecraft.server;
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+// Paper start
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+import com.destroystokyo.paper.PaperWorldConfig.DuplicateUUIDMode;
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+import java.util.HashMap;
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+import java.util.UUID;
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+// Paper end
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import com.destroystokyo.paper.exception.ServerInternalException;
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import com.google.common.collect.Maps;
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import com.google.common.collect.Queues;
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@@ -41,6 +46,7 @@ public class Chunk implements IChunkAccess {
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public final World world;
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public final Map<HeightMap.Type, HeightMap> heightMap;
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public Long scheduledForUnload; // Paper - delay chunk unloads
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+ private static final Logger logger = LogManager.getLogger(); // Paper
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public final int locX;
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public final int locZ;
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private boolean l;
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@@ -691,6 +697,7 @@ public class Chunk implements IChunkAccess {
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if (i != this.locX || j != this.locZ) {
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Chunk.d.warn("Wrong location! ({}, {}) should be ({}, {}), {}", i, j, this.locX, this.locZ, entity);
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entity.die();
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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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@@ -879,6 +886,50 @@ public class Chunk implements IChunkAccess {
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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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+ // Paper start
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+ DuplicateUUIDMode mode = world.paperConfig.duplicateUUIDMode;
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+ if (mode == DuplicateUUIDMode.WARN || mode == DuplicateUUIDMode.DELETE || mode == 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).entitiesByUUID.get(entity.uniqueID);
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+ if (other == null || other.dead || world.getEntityUnloadQueue().contains(other)) {
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+ other = thisChunk.get(entity.uniqueID);
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+ }
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+
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+ if (mode == DuplicateUUIDMode.SAFE_REGEN && other != null && !other.dead &&
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+ !world.getEntityUnloadQueue().contains(other)
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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.die();
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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.die();
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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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+ thisChunk.put(entity.uniqueID, entity);
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+ }
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+ }
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+ // Paper end
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// CraftBukkit start
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List<Entity> toRemove = new LinkedList<>();
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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 5701f535e4..e16fd4e5e9 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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@@ -2736,6 +2736,7 @@ 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.au = this.uniqueID.toString();
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 601fe77c51..4df291f0d6 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -70,7 +70,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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}
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};
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// Spigot end
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- protected final Set<Entity> g = com.google.common.collect.Sets.newHashSet(); // Paper
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+ protected final Set<Entity> g = com.google.common.collect.Sets.newHashSet(); public Set<Entity> getEntityUnloadQueue() { return g; };// Paper - OBFHELPER
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//public final List<TileEntity> tileEntityList = Lists.newArrayList(); // Paper - remove unused list
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public final List<TileEntity> tileEntityListTick = Lists.newArrayList();
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private final List<TileEntity> c = Lists.newArrayList();
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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 a4895bd55d..a896f8fe46 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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@@ -37,7 +37,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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private final MinecraftServer server;
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public EntityTracker tracker;
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private final PlayerChunkMap manager;
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- private final Map<UUID, Entity> entitiesByUUID = Maps.newHashMap();
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+ public final Map<UUID, Entity> entitiesByUUID = Maps.newHashMap(); // Paper
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public boolean savingDisabled;
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private boolean J;
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private int emptyTime;
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@@ -972,7 +972,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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this.g.remove(entity1);
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} else {
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if (!(entity instanceof EntityHuman)) {
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- if (DEBUG_ENTITIES) {
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+ if (DEBUG_ENTITIES && entity.world.paperConfig.duplicateUUIDMode != com.destroystokyo.paper.PaperWorldConfig.DuplicateUUIDMode.NOTHING) {
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WorldServer.a.error("Keeping entity {} that already exists with UUID {}", entity1, uuid.toString()); // CraftBukkit // Paper
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WorldServer.a.error("Deleting duplicate entity {}", entity); // Paper
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@@ -1003,7 +1003,7 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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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) {
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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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2.20.1
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