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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
68 lines
4.2 KiB
Diff
68 lines
4.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 13 Jul 2020 06:22:54 -0700
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Subject: [PATCH] Fix AdvancementDataPlayer leak due from quitting early in
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login
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Move the criterion storage to the AdvancementDataPlayer object
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itself, so the criterion object stores no references - and thus
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needs no cleanup.
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diff --git a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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index 5450734060428426981e2c1f1025b1aa5aa4d271..805459ba815520165c86a537fbb1f3e04b85bfbd 100644
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--- a/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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+++ b/src/main/java/net/minecraft/advancements/critereon/SimpleCriterionTrigger.java
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@@ -15,22 +15,22 @@ import net.minecraft.server.level.ServerPlayer;
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import net.minecraft.world.level.storage.loot.LootContext;
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public abstract class SimpleCriterionTrigger<T extends SimpleCriterionTrigger.SimpleInstance> implements CriterionTrigger<T> {
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- private final Map<PlayerAdvancements, Set<CriterionTrigger.Listener<T>>> players = Maps.newIdentityHashMap();
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+ // private final Map<PlayerAdvancements, Set<CriterionTrigger.Listener<T>>> players = Maps.newIdentityHashMap(); // Paper - fix AdvancementDataPlayer leak; moved into AdvancementDataPlayer to fix memory leak
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@Override
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public final void addPlayerListener(PlayerAdvancements manager, CriterionTrigger.Listener<T> conditions) {
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- this.players.computeIfAbsent(manager, (managerx) -> {
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+ manager.criterionData.computeIfAbsent(this, (managerx) -> { // Paper - fix AdvancementDataPlayer leak
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return Sets.newHashSet();
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}).add(conditions);
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}
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@Override
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public final void removePlayerListener(PlayerAdvancements manager, CriterionTrigger.Listener<T> conditions) {
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- Set<CriterionTrigger.Listener<T>> set = this.players.get(manager);
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+ Set<CriterionTrigger.Listener<T>> set = (Set) manager.criterionData.get(this); // Paper - fix AdvancementDataPlayer leak
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if (set != null) {
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set.remove(conditions);
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if (set.isEmpty()) {
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- this.players.remove(manager);
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+ manager.criterionData.remove(this); // Paper - fix AdvancementDataPlayer leak
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}
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}
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@@ -38,12 +38,12 @@ public abstract class SimpleCriterionTrigger<T extends SimpleCriterionTrigger.Si
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@Override
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public final void removePlayerListeners(PlayerAdvancements tracker) {
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- this.players.remove(tracker);
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+ tracker.criterionData.remove(this); // Paper - fix AdvancementDataPlayer leak
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}
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protected void trigger(ServerPlayer player, Predicate<T> predicate) {
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PlayerAdvancements playerAdvancements = player.getAdvancements();
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- Set<CriterionTrigger.Listener<T>> set = this.players.get(playerAdvancements);
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+ Set<CriterionTrigger.Listener<T>> set = (Set) playerAdvancements.criterionData.get(this); // Paper - fix AdvancementDataPlayer leak
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if (set != null && !set.isEmpty()) {
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LootContext lootContext = EntityPredicate.createContext(player, player);
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List<CriterionTrigger.Listener<T>> list = null;
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diff --git a/src/main/java/net/minecraft/server/PlayerAdvancements.java b/src/main/java/net/minecraft/server/PlayerAdvancements.java
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index c61789a2df774761feb79123d31eab75f9996bf2..6e0073a54f59621d8adb4e8a70e6c89c708eabba 100644
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--- a/src/main/java/net/minecraft/server/PlayerAdvancements.java
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+++ b/src/main/java/net/minecraft/server/PlayerAdvancements.java
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@@ -63,6 +63,7 @@ public class PlayerAdvancements {
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private AdvancementHolder lastSelectedTab;
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private boolean isFirstPacket = true;
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private final Codec<PlayerAdvancements.Data> codec;
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+ public final Map<net.minecraft.advancements.critereon.SimpleCriterionTrigger<?>, Set<CriterionTrigger.Listener<?>>> criterionData = new java.util.IdentityHashMap<>(); // Paper - fix advancement data player leakage
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public PlayerAdvancements(DataFixer dataFixer, PlayerList playerManager, ServerAdvancementManager advancementLoader, Path filePath, ServerPlayer owner) {
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this.playerList = playerManager;
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