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20fc1b5c2a
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 CraftBukkit Changes:049120068SPIGOT-6101: Store persist state of entities0de8365ddSPIGOT-6103: Summoning an Eye of Ender throw an Error Spigot Changes: b5a13e6d Rebuild patches
103 lines
6.3 KiB
Diff
103 lines
6.3 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: Sat, 25 Apr 2020 06:46:35 -0400
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Subject: [PATCH] Fix numerous item duplication issues and teleport issues
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This notably fixes the newest "Donkey Dupe", but also fixes a lot
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of dupe bugs in general around nether portals and entity world transfer
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We also fix item duplication generically by anytime we clone an item
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to drop it on the ground, destroy the source item.
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This avoid an itemstack ever existing twice in the world state pre
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clean up stage.
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So even if something NEW comes up, it would be impossible to drop the
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same item twice because the source was destroyed.
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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 b21770e8549ed02ff68656584ecec1cf023542c5..112eb6e2568e535ae83cfb832d3b0fc1e46bef65 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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@@ -1873,11 +1873,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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} else {
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// CraftBukkit start - Capture drops for death event
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if (this instanceof EntityLiving && !((EntityLiving) this).forceDrops) {
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- ((EntityLiving) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack));
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+ ((EntityLiving) this).drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // Paper - mirror so we can destroy it later
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return null;
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}
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// CraftBukkit end
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- EntityItem entityitem = new EntityItem(this.world, this.locX(), this.locY() + (double) f, this.locZ(), itemstack);
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+ EntityItem entityitem = new EntityItem(this.world, this.locX(), this.locY() + (double) f, this.locZ(), itemstack.cloneItemStack()); // Paper - clone so we can destroy original
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+ itemstack.setCount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe
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entityitem.defaultPickupDelay();
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// CraftBukkit start
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@@ -2520,6 +2521,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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@Nullable
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public Entity teleportTo(WorldServer worldserver, BlockPosition location) {
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// CraftBukkit end
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+ // Paper start - fix bad state entities causing dupes
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+ if (!isAlive() || !valid) {
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+ LOGGER.warn("Illegal Entity Teleport " + this + " to " + worldserver + ":" + location, new Throwable());
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+ return null;
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+ }
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+ // Paper end
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if (this.world instanceof WorldServer && !this.dead) {
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this.world.getMethodProfiler().enter("changeDimension");
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// CraftBukkit start
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@@ -2555,7 +2562,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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entity.bukkitEntity = this.getBukkitEntity();
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if (this instanceof EntityInsentient) {
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- ((EntityInsentient) this).unleash(true, false); // Unleash to prevent duping of leads.
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+ ((EntityInsentient) this).unleash(true, true); // Paper drop lead
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}
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// CraftBukkit end
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}
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@@ -2675,7 +2682,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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}
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public boolean canPortal() {
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- return true;
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+ return isAlive() && valid; // Paper
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}
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public float a(Explosion explosion, IBlockAccess iblockaccess, BlockPosition blockposition, IBlockData iblockdata, Fluid fluid, float f) {
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diff --git a/src/main/java/net/minecraft/server/EntityArmorStand.java b/src/main/java/net/minecraft/server/EntityArmorStand.java
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index 587e8e582dfe9c3127ca2b298c4e1db79c2d6c8e..81df71b7e165b8702575176550a587cdb8744beb 100644
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--- a/src/main/java/net/minecraft/server/EntityArmorStand.java
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+++ b/src/main/java/net/minecraft/server/EntityArmorStand.java
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@@ -559,7 +559,7 @@ public class EntityArmorStand extends EntityLiving {
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for (i = 0; i < this.handItems.size(); ++i) {
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itemstack = (ItemStack) this.handItems.get(i);
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if (!itemstack.isEmpty()) {
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- drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
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+ drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // CraftBukkit - add to drops // Paper - mirror so we can destroy it later - though this call site was safe
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this.handItems.set(i, ItemStack.b);
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}
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}
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@@ -567,7 +567,7 @@ public class EntityArmorStand extends EntityLiving {
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for (i = 0; i < this.armorItems.size(); ++i) {
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itemstack = (ItemStack) this.armorItems.get(i);
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if (!itemstack.isEmpty()) {
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- drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asBukkitCopy(itemstack)); // CraftBukkit - add to drops
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+ drops.add(org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack)); // CraftBukkit - add to drops // Paper - mirror so we can destroy it later - though this call site was safe
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this.armorItems.set(i, ItemStack.b);
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}
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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index 6bd2b47151a3abfd0b96641272ecc9fe2d2421b2..32202eb92207995b621d151481aa44bd3817e808 100644
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--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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+++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
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@@ -808,7 +808,8 @@ public class CraftEventFactory {
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for (org.bukkit.inventory.ItemStack stack : event.getDrops()) {
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if (stack == null || stack.getType() == Material.AIR || stack.getAmount() == 0) continue;
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- world.dropItem(entity.getLocation(), stack);
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+ world.dropItem(entity.getLocation(), stack); // Paper - note: dropItem already clones due to this being bukkit -> NMS
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+ if (stack instanceof CraftItemStack) stack.setAmount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe, but don't nuke bukkit stacks of manually added items
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}
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return event;
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