From c921194576a702ea41d47779f04f9c45524938d7 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 313712878..40b54191e 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -199,4 +199,9 @@ 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 b8400876e..237210cc8 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java @@ -717,7 +717,8 @@ 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; } -- 2.21.0