From e2c17e451f8f9e556faa6e431910468d7bfcbd8e Mon Sep 17 00:00:00 2001 From: Sudzzy Date: Thu, 3 Mar 2016 02:50:31 -0600 Subject: [PATCH] Configurable inter-world teleportation safety People are able to abuse the way Bukkit handles teleportation across worlds since it provides a built in teleportation safety check. To abuse the safety check, players are required to get into a location deemed unsafe by Bukkit e.g. be within a chest or door block. While they are in this block, they accept a teleport request from a player within a different world. Once the player teleports, Minecraft will recursively search upwards for a safe location, this could eventually land within a player's skybase. Example setup to perform the glitch: http://puu.sh/ng3PC/cf072dcbdb.png The wanted destination was on top of the emerald block however the player ended on top of the diamond block. This only is the case if the player is teleporting between worlds. diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java index 9db394d4f..50837d767 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -190,4 +190,9 @@ public class PaperWorldConfig { private void portalSearchRadius() { portalSearchRadius = getInt("portal-search-radius", 128); } + + public boolean disableTeleportationSuffocationCheck; + private void disableTeleportationSuffocationCheck() { + disableTeleportationSuffocationCheck = getBoolean("disable-teleportation-suffocation-check", false); + } } diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java index 9de5d0c69..0c35c94b3 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java @@ -714,7 +714,8 @@ public class CraftPlayer extends CraftHumanEntity implements Player { if (fromWorld == toWorld) { entity.playerConnection.teleport(to); } else { - server.getHandle().moveToWorld(entity, toWorld.dimension, true, to, true); + // Paper - Configurable suffocation check + server.getHandle().moveToWorld(entity, toWorld.dimension, true, to, !toWorld.paperConfig.disableTeleportationSuffocationCheck); } return true; } -- 2.19.1