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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.
248 lines
14 KiB
Diff
248 lines
14 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
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Date: Sun, 3 Mar 2024 19:43:40 +0100
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Subject: [PATCH] Suspicious Effect Entry API
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Exposes a new suspicious effect entry type that properly represents
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storable effects in the context of suspicious effects as they only
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define the potion effect type and duration.
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This differentiates them from the existing PotionEffect API found in
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bukkit and hence clarifies that storable values in the parts of the API
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in which it replaces PotionEffect.
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Co-authored-by: Yannick Lamprecht <yannicklamprecht@live.de>
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMushroomCow.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMushroomCow.java
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index b453a47cadbda2e22262bcdc5454c4c6cf5b2583..983e0cdbd1bd950807967a36cba49859fb956f31 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMushroomCow.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftMushroomCow.java
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@@ -32,20 +32,32 @@ public class CraftMushroomCow extends CraftCow implements MushroomCow, io.paperm
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return ImmutableList.of();
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}
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+ // Paper start - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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@Override
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public boolean addEffectToNextStew(PotionEffect potionEffect, boolean overwrite) {
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Preconditions.checkArgument(potionEffect != null, "PotionEffect cannot be null");
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- MobEffectInstance minecraftPotionEffect = CraftPotionUtil.fromBukkit(potionEffect);
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- if (!overwrite && this.hasEffectForNextStew(potionEffect.getType())) {
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+ return addEffectToNextStew(io.papermc.paper.potion.SuspiciousEffectEntry.create(potionEffect.getType(), potionEffect.getDuration()), overwrite);
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+ }
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+
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+ @Override
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+ public boolean addEffectToNextStew(io.papermc.paper.potion.SuspiciousEffectEntry suspiciousEffectEntry, boolean overwrite) {
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+ Preconditions.checkArgument(suspiciousEffectEntry != null, "SuspiciousEffectEntry cannot be null");
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+ MobEffect minecraftPotionEffect = CraftPotionEffectType.bukkitToMinecraft(suspiciousEffectEntry.effect());
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+ if (!overwrite && this.hasEffectForNextStew(suspiciousEffectEntry.effect())) {
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return false;
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}
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+ SuspiciousEffectHolder.EffectEntry recordSuspiciousEffect = new SuspiciousEffectHolder.EffectEntry(minecraftPotionEffect, suspiciousEffectEntry.duration());
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+ this.removeEffectFromNextStew(suspiciousEffectEntry.effect()); // Avoid duplicates of effects
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+ // Paper start - fix modification of immutable stew effects list
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if (this.getHandle().stewEffects == null) {
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- this.getHandle().stewEffects = new ArrayList<>();
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+ this.getHandle().stewEffects = List.of(recordSuspiciousEffect);
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+ } else {
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+ this.getHandle().stewEffects = io.papermc.paper.util.MCUtil.copyListAndAdd(this.getHandle().stewEffects, recordSuspiciousEffect);
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}
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- SuspiciousEffectHolder.EffectEntry recordSuspiciousEffect = new SuspiciousEffectHolder.EffectEntry(minecraftPotionEffect.getEffect(), minecraftPotionEffect.getDuration());
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- this.removeEffectFromNextStew(potionEffect.getType()); // Avoid duplicates of effects
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- return this.getHandle().stewEffects.add(recordSuspiciousEffect);
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+ // Paper end - fix modification of immutable stew effects list
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+ return true;
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}
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+ // Paper end - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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@Override
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public boolean removeEffectFromNextStew(PotionEffectType potionEffectType) {
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@@ -54,7 +66,21 @@ public class CraftMushroomCow extends CraftCow implements MushroomCow, io.paperm
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return false;
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}
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MobEffect minecraftPotionEffectType = CraftPotionEffectType.bukkitToMinecraft(potionEffectType);
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- return this.getHandle().stewEffects.removeIf(recordSuspiciousEffect -> recordSuspiciousEffect.effect().equals(minecraftPotionEffectType));
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+ // Paper start - fix modification of immutable stew effects list
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+ if (this.getHandle().stewEffects == null) return false;
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+
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+ final int oldSize = this.getHandle().stewEffects.size();
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+ this.getHandle().stewEffects = io.papermc.paper.util.MCUtil.copyListAndRemoveIf(
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+ this.getHandle().stewEffects, s -> java.util.Objects.equals(s.effect(), minecraftPotionEffectType)
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+ );
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+
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+ final int newSize = this.getHandle().stewEffects.size();
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+ if (newSize == 0) {
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+ this.getHandle().stewEffects = null; // Null the empty list, mojang expect this
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+ }
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+
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+ return oldSize != newSize; // Yield back if the size changed, implying an object was removed.
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+ // Paper end - fix modification of immutable stew effects list
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}
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@Override
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@@ -89,6 +115,43 @@ public class CraftMushroomCow extends CraftCow implements MushroomCow, io.paperm
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this.getHandle().setVariant(net.minecraft.world.entity.animal.MushroomCow.MushroomType.values()[variant.ordinal()]);
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}
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+ // Paper start
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+ @Override
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+ public java.util.List<io.papermc.paper.potion.SuspiciousEffectEntry> getStewEffects() {
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+ if (this.getHandle().stewEffects == null) {
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+ return java.util.List.of();
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+ }
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+
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+ java.util.List<io.papermc.paper.potion.SuspiciousEffectEntry> nmsPairs = new java.util.ArrayList<>(this.getHandle().stewEffects.size());
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+ for (final net.minecraft.world.level.block.SuspiciousEffectHolder.EffectEntry effect : this.getHandle().stewEffects) {
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+ nmsPairs.add(io.papermc.paper.potion.SuspiciousEffectEntry.create(
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+ org.bukkit.craftbukkit.potion.CraftPotionEffectType.minecraftToBukkit(effect.effect()),
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+ effect.duration()
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+ ));
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+ }
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+
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+ return java.util.Collections.unmodifiableList(nmsPairs);
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+ }
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+
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+ @Override
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+ public void setStewEffects(final java.util.List<io.papermc.paper.potion.SuspiciousEffectEntry> effects) {
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+ if (effects.isEmpty()) {
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+ this.getHandle().stewEffects = null;
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+ return;
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+ }
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+
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+ java.util.List<net.minecraft.world.level.block.SuspiciousEffectHolder.EffectEntry> nmsPairs = new java.util.ArrayList<>(effects.size());
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+ for (final io.papermc.paper.potion.SuspiciousEffectEntry effect : effects) {
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+ nmsPairs.add(new net.minecraft.world.level.block.SuspiciousEffectHolder.EffectEntry(
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+ org.bukkit.craftbukkit.potion.CraftPotionEffectType.bukkitToMinecraft(effect.effect()),
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+ effect.duration()
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+ ));
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+ }
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+
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+ this.getHandle().stewEffects = nmsPairs;
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+ }
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+ // Paper end
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+
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@Override
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public String toString() {
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return "CraftMushroomCow";
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diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSuspiciousStew.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSuspiciousStew.java
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index 2c3b9f76067088efdc2250cdb5070df86e2dc0f5..243acae2c69dc46c02290ba103afc1549b618d85 100644
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--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSuspiciousStew.java
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+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSuspiciousStew.java
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@@ -24,7 +24,7 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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static final ItemMetaKey EFFECTS = new ItemMetaKey("effects", "effects");
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static final ItemMetaKey ID = new ItemMetaKey("id", "id");
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- private List<PotionEffect> customEffects;
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+ private List<io.papermc.paper.potion.SuspiciousEffectEntry> customEffects; // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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CraftMetaSuspiciousStew(CraftMetaItem meta) {
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super(meta);
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@@ -57,7 +57,7 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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duration = net.minecraft.world.item.SuspiciousStewItem.DEFAULT_DURATION;
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}
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// Paper end start - default duration is 160
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- this.customEffects.add(new PotionEffect(type, duration, 0));
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+ this.customEffects.add(io.papermc.paper.potion.SuspiciousEffectEntry.create(type, duration)); // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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}
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}
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}
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@@ -84,12 +84,14 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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ListTag effectList = new ListTag();
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tag.put(CraftMetaSuspiciousStew.EFFECTS.NBT, effectList);
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- for (PotionEffect effect : this.customEffects) {
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+ // Paper start - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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+ for (io.papermc.paper.potion.SuspiciousEffectEntry effect : this.customEffects) {
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CompoundTag effectData = new CompoundTag();
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- effectData.putString(CraftMetaSuspiciousStew.ID.NBT, effect.getType().getKey().toString());
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- if (effect.getDuration() != net.minecraft.world.item.SuspiciousStewItem.DEFAULT_DURATION) effectData.putInt(CraftMetaSuspiciousStew.DURATION.NBT, effect.getDuration()); // Paper - don't save duration if it's the default value
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+ effectData.putString(CraftMetaSuspiciousStew.ID.NBT, effect.effect().getKey().toString());
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+ if (effect.duration() != net.minecraft.world.item.SuspiciousStewItem.DEFAULT_DURATION) effectData.putInt(CraftMetaSuspiciousStew.DURATION.NBT, effect.duration()); // Paper - don't save duration if it's the default value
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effectList.add(effectData);
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}
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+ // Paper end - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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}
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}
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@@ -124,7 +126,7 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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@Override
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public List<PotionEffect> getCustomEffects() {
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if (this.hasCustomEffects()) {
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- return ImmutableList.copyOf(this.customEffects);
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+ return this.customEffects.stream().map(suspiciousEffectEntry -> suspiciousEffectEntry.effect().createEffect(suspiciousEffectEntry.duration(), 0)).toList(); // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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}
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return ImmutableList.of();
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}
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@@ -132,15 +134,21 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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@Override
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public boolean addCustomEffect(PotionEffect effect, boolean overwrite) {
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Preconditions.checkArgument(effect != null, "Potion effect cannot be null");
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+ return addCustomEffect(io.papermc.paper.potion.SuspiciousEffectEntry.create(effect.getType(), effect.getDuration()), overwrite); // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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+ }
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- int index = this.indexOfEffect(effect.getType());
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+ // Paper start - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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+ @Override
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+ public boolean addCustomEffect(final io.papermc.paper.potion.SuspiciousEffectEntry suspiciousEffectEntry, final boolean overwrite) {
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+ Preconditions.checkArgument(suspiciousEffectEntry != null, "Suspicious effect entry cannot be null");
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+ int index = this.indexOfEffect(suspiciousEffectEntry.effect());
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if (index != -1) {
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if (overwrite) {
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- PotionEffect old = this.customEffects.get(index);
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- if (old.getDuration() == effect.getDuration()) {
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+ io.papermc.paper.potion.SuspiciousEffectEntry old = this.customEffects.get(index);
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+ if (old.duration() == suspiciousEffectEntry.duration()) {
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return false;
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}
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- this.customEffects.set(index, effect);
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+ this.customEffects.set(index, suspiciousEffectEntry);
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return true;
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} else {
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return false;
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@@ -149,10 +157,11 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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if (this.customEffects == null) {
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this.customEffects = new ArrayList<>();
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}
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- this.customEffects.add(effect);
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+ this.customEffects.add(suspiciousEffectEntry);
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return true;
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}
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}
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+ // Paper end - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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@Override
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public boolean removeCustomEffect(PotionEffectType type) {
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@@ -163,10 +172,12 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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}
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boolean changed = false;
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- Iterator<PotionEffect> iterator = this.customEffects.iterator();
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+ // Paper start - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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+ Iterator<io.papermc.paper.potion.SuspiciousEffectEntry> iterator = this.customEffects.iterator();
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while (iterator.hasNext()) {
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- PotionEffect effect = iterator.next();
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- if (type.equals(effect.getType())) {
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+ io.papermc.paper.potion.SuspiciousEffectEntry effect = iterator.next();
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+ if (type.equals(effect.effect())) {
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+ // Paper end - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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iterator.remove();
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changed = true;
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}
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@@ -189,7 +200,7 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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}
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for (int i = 0; i < this.customEffects.size(); i++) {
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- if (this.customEffects.get(i).getType().equals(type)) {
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+ if (this.customEffects.get(i).effect().equals(type)) { // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta
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return i;
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}
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}
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@@ -234,7 +245,7 @@ public class CraftMetaSuspiciousStew extends CraftMetaItem implements Suspicious
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super.serialize(builder);
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if (this.hasCustomEffects()) {
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- builder.put(CraftMetaSuspiciousStew.EFFECTS.BUKKIT, ImmutableList.copyOf(this.customEffects));
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+ builder.put(CraftMetaSuspiciousStew.EFFECTS.BUKKIT, ImmutableList.copyOf(com.google.common.collect.Lists.transform(this.customEffects, s -> new PotionEffect(s.effect(), s.duration(), 0)))); // Paper - add overloads to use suspicious effect entry to mushroom cow and suspicious stew meta - convert back to potion effect for bukkit legacy item serialisation to maintain backwards compatibility for the written format.
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}
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return builder;
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