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https://github.com/PaperMC/Paper.git
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67 lines
4.5 KiB
Diff
67 lines
4.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sat, 9 Dec 2023 19:15:59 -0800
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Subject: [PATCH] Fix NPE on null loc for EntityTeleportEvent
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EntityTeleportEvent#setTo is marked as nullable and so is the
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getTo method. This fixes the handling of a null "to" location
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by treating it the same as the event being cancelled. This is
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already existing behavior for the EntityPortalEvent (which
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extends EntityTeleportEvent).
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diff --git a/src/main/java/net/minecraft/server/commands/TeleportCommand.java b/src/main/java/net/minecraft/server/commands/TeleportCommand.java
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index a306b30af19277386a2f3e560b4902a8b5796f2a..54851f6cc0d5fddb32a9a1e84a4f5ae41af18758 100644
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--- a/src/main/java/net/minecraft/server/commands/TeleportCommand.java
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+++ b/src/main/java/net/minecraft/server/commands/TeleportCommand.java
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@@ -169,9 +169,10 @@ public class TeleportCommand {
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Location to = new Location(world.getWorld(), x, y, z, f2, f3);
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EntityTeleportEvent event = new EntityTeleportEvent(target.getBukkitEntity(), target.getBukkitEntity().getLocation(), to);
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world.getCraftServer().getPluginManager().callEvent(event);
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- if (event.isCancelled()) {
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+ if (event.isCancelled() || event.getTo() == null) { // Paper
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return;
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}
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+ to = event.getTo(); // Paper - actually track new location
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x = to.getX();
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y = to.getY();
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diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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index f948f4051607611e7105790c3b6bacc5d3ec39db..68c312dc39ef6fdb88e201ba096c9bd99aebddd7 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
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+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -4183,7 +4183,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
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if (!(this instanceof ServerPlayer)) {
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EntityTeleportEvent teleport = new EntityTeleportEvent(this.getBukkitEntity(), new Location(this.level().getWorld(), d3, d4, d5), new Location(this.level().getWorld(), d0, d6, d2));
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this.level().getCraftServer().getPluginManager().callEvent(teleport);
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- if (!teleport.isCancelled()) {
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+ if (!teleport.isCancelled() && teleport.getTo() != null) { // Paper
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Location to = teleport.getTo();
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this.teleportTo(to.getX(), to.getY(), to.getZ());
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} else {
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diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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index 8fa9282acd87132516329083f774345df3310cf2..edd29c2f4d0151d512618115a8fb4b7423171491 100644
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--- a/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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+++ b/src/main/java/net/minecraft/world/entity/ai/goal/FollowOwnerGoal.java
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@@ -130,7 +130,7 @@ public class FollowOwnerGoal extends Goal {
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} else {
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// CraftBukkit start
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EntityTeleportEvent event = CraftEventFactory.callEntityTeleportEvent(this.tamable, (double) x + 0.5D, (double) y, (double) z + 0.5D);
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- if (event.isCancelled()) {
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+ if (event.isCancelled() || event.getTo() == null) { // Paper
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return false;
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}
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Location to = event.getTo();
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diff --git a/src/main/java/net/minecraft/world/entity/monster/Shulker.java b/src/main/java/net/minecraft/world/entity/monster/Shulker.java
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index 509c8fae366e6aeca324b4d8e39bd3182d6d9b9b..c1f73e10d8473251425300cedbed2b82da6a79ce 100644
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--- a/src/main/java/net/minecraft/world/entity/monster/Shulker.java
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+++ b/src/main/java/net/minecraft/world/entity/monster/Shulker.java
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@@ -409,7 +409,7 @@ public class Shulker extends AbstractGolem implements VariantHolder<Optional<Dye
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if (enumdirection != null) {
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// CraftBukkit start
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EntityTeleportEvent teleportEvent = CraftEventFactory.callEntityTeleportEvent(this, blockposition1.getX(), blockposition1.getY(), blockposition1.getZ());
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- if (teleportEvent.isCancelled()) {
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+ if (teleportEvent.isCancelled() || teleportEvent.getTo() == null) { // Paper
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return false;
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} else {
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blockposition1 = CraftLocation.toBlockPosition(teleportEvent.getTo());
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