From 0000000000000000000000000000000000000000 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 cd47a4ca069df26969de3051c2aac80540093818..abbf59bb91021821876a8960e8f77fac24457ec4 100644 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java @@ -198,4 +198,9 @@ public class PaperWorldConfig { portalSearchRadius = getInt("portal-search-radius", 128); portalCreateRadius = getInt("portal-create-radius", 16); } + + 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 671cab3efd94b81b0d71af3e096ffe9108d36258..2cc50f8d91c4ea8632ad72fce6aa585916ca8dd7 100644 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java @@ -783,7 +783,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player { if (fromWorld == toWorld) { entity.playerConnection.teleport(to); } else { - server.getHandle().moveToWorld(entity, toWorld, true, to, true); + server.getHandle().moveToWorld(entity, toWorld, true, to, !toWorld.paperConfig.disableTeleportationSuffocationCheck); // Paper } return true; }