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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach@zachbr.io>
Date: Thu, 16 Apr 2020 20:07:29 -0500
Subject: [PATCH] Restrict vanilla teleport command to valid locations
Fixes GH-3165, GH-3575
diff --git a/src/main/java/net/minecraft/server/commands/TeleportCommand.java b/src/main/java/net/minecraft/server/commands/TeleportCommand.java
index 85ae18b7f8a26f83ea0cf1ae17cfa88b796fcc77..d0109df7fad51fc0444459f5d367254c8f4c355e 100644
--- a/src/main/java/net/minecraft/server/commands/TeleportCommand.java
+++ b/src/main/java/net/minecraft/server/commands/TeleportCommand.java
@@ -148,6 +148,12 @@ public class TeleportCommand {
private static void performTeleport(CommandSourceStack source, Entity target, ServerLevel world, double x, double y, double z, Set<ClientboundPlayerPositionPacket.RelativeArgument> movementFlags, float yaw, float pitch, @Nullable TeleportCommand.LookAt facingLocation) throws CommandSyntaxException {
BlockPos blockposition = new BlockPos(x, y, z);
+ // Paper start - Don't allow teleport command to invalid locations
+ if (x <= -30000000 || z <= -30000000 || x > 30000000 || z > 30000000 || y > 30000000 || y <= -30000000) { // Copy/pasta from BaseBlockPosition#isValidLocation
+ org.bukkit.Bukkit.getLogger().warning("Refused to teleport " + target.getScoreboardName() + " to " + x + ", " + y + ", " + z);
+ return;
+ }
+ // Paper end
if (!Level.isInSpawnableBounds(blockposition)) {
throw TeleportCommand.INVALID_POSITION.create();
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