PaperMC/Spigot-Server-Patches/0480-Restrict-vanilla-teleport-command-to-valid-locations.patch
Zach Brown fdb8fe7807
Be less strict with vanilla teleport command limits
Just limit to the same valid location check as BaseBlockPosition, no
reason to restrict to the world border.

Ref: GH-3165
2020-04-16 21:19:42 -05:00

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From edcf740d8e3d2b296015f13626dabff83cde74f0 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
diff --git a/src/main/java/net/minecraft/server/CommandTeleport.java b/src/main/java/net/minecraft/server/CommandTeleport.java
index 3060b4f68..79016b587 100644
--- a/src/main/java/net/minecraft/server/CommandTeleport.java
+++ b/src/main/java/net/minecraft/server/CommandTeleport.java
@@ -116,6 +116,12 @@ public class CommandTeleport {
}
private static void a(CommandListenerWrapper commandlistenerwrapper, Entity entity, WorldServer worldserver, double d0, double d1, double d2, Set<PacketPlayOutPosition.EnumPlayerTeleportFlags> set, float f, float f1, @Nullable CommandTeleport.a commandteleport_a) {
+ // Paper start - Don't allow teleport command to invalid locations
+ if (d0 <= -30000000 || d2 <= -30000000 || d0 > 30000000 || d2 > 30000000) { // Copy/pasta from BaseBlockPosition#isValidLocation
+ org.bukkit.Bukkit.getLogger().warning("Refused to teleport " + entity.getName() + " to " + d0 + ", " + d1 + ", " + d2);
+ return;
+ }
+ // Paper end
if (entity instanceof EntityPlayer) {
ChunkCoordIntPair chunkcoordintpair = new ChunkCoordIntPair(new BlockPosition(d0, d1, d2));
--
2.26.0