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https://github.com/PaperMC/Paper.git
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67 lines
4.6 KiB
Diff
67 lines
4.6 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 c6dcc37ac5fcf50bcb246f533b99983dfc5c19c2..c13b6f14c3061710c2b27034db240cc94ec0fcb5 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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@@ -181,9 +181,10 @@ public class TeleportCommand {
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Location to = new Location(world.getWorld(), d3, d4, d5, f4, f5);
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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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d3 = to.getX();
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d4 = 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 9e105732fb765258af9154b84534234fd84eb24f..97a524db692b7367f22a373439c1233b143f4a17 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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@@ -4363,7 +4363,7 @@ 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/TamableAnimal.java b/src/main/java/net/minecraft/world/entity/TamableAnimal.java
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index f6a253e063f4a2cf78a036e44431806a0ba270d9..332ae836826270507110f1e0438aaa36d6e9deb5 100644
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--- a/src/main/java/net/minecraft/world/entity/TamableAnimal.java
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+++ b/src/main/java/net/minecraft/world/entity/TamableAnimal.java
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@@ -314,7 +314,7 @@ public abstract class TamableAnimal extends Animal implements OwnableEntity {
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} else {
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// CraftBukkit start
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EntityTeleportEvent event = CraftEventFactory.callEntityTeleportEvent(this, (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 - prevent NP on null event to location
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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 dc1870baf172982ebb34eccd4ee79497f48f8050..0fffa9dbcbbb15a2138f9a4e4d8e812c8047a7bb 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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@@ -416,7 +416,7 @@ 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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