From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Shane Freeder Date: Sun, 11 Nov 2018 21:01:09 +0000 Subject: [PATCH] Don't allow digging into unloaded chunks diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java index fe25754521d5cf7059130f14acaf61a6646c5360..ab94132590e3743e45ca345c3e30b811e5c54dfd 100644 --- a/src/main/java/net/minecraft/server/PlayerConnection.java +++ b/src/main/java/net/minecraft/server/PlayerConnection.java @@ -1273,6 +1273,11 @@ public class PlayerConnection implements PacketListenerPlayIn { case START_DESTROY_BLOCK: case ABORT_DESTROY_BLOCK: case STOP_DESTROY_BLOCK: + // Paper start - Don't allow digging in unloaded chunks + if (this.player.world.getChunkIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4) == null) { + return; + } + // Paper end - Don't allow digging in unloaded chunks this.player.playerInteractManager.a(blockposition, packetplayinblockdig_enumplayerdigtype, packetplayinblockdig.c(), this.minecraftServer.getMaxBuildHeight()); return; default: diff --git a/src/main/java/net/minecraft/server/PlayerInteractManager.java b/src/main/java/net/minecraft/server/PlayerInteractManager.java index e2e5c17c24c8f5e9807ca879b1025d13cb195226..ed3f3362b640746649455f8dd2255ac2da03df7c 100644 --- a/src/main/java/net/minecraft/server/PlayerInteractManager.java +++ b/src/main/java/net/minecraft/server/PlayerInteractManager.java @@ -69,8 +69,8 @@ public class PlayerInteractManager { IBlockData iblockdata; if (this.i) { - iblockdata = this.world.getType(this.j); - if (iblockdata.isAir()) { + iblockdata = this.world.getTypeIfLoaded(this.j); // Paper + if (iblockdata == null || iblockdata.isAir()) { // Paper this.i = false; } else { float f = this.a(iblockdata, this.j, this.k); @@ -81,7 +81,13 @@ public class PlayerInteractManager { } } } else if (this.e) { - iblockdata = this.world.getType(this.g); + // Paper start - don't want to do same logic as above, return instead + iblockdata = this.world.getTypeIfLoaded(this.g); + if (iblockdata == null) { + this.e = false; + return; + } + // Paper end if (iblockdata.isAir()) { this.world.a(this.player.getId(), this.g, -1); this.l = -1; @@ -253,10 +259,12 @@ public class PlayerInteractManager { this.player.playerConnection.sendPacket(new PacketPlayOutBlockBreak(blockposition, this.world.getType(blockposition), packetplayinblockdig_enumplayerdigtype, true, "stopped destroying")); } else if (packetplayinblockdig_enumplayerdigtype == PacketPlayInBlockDig.EnumPlayerDigType.ABORT_DESTROY_BLOCK) { this.e = false; - if (!Objects.equals(this.g, blockposition)) { + if (!Objects.equals(this.g, blockposition) && !BlockPosition.ZERO.equals(this.g)) { // Paper PlayerInteractManager.LOGGER.debug("Mismatch in destroy block pos: " + this.g + " " + blockposition); // CraftBukkit - SPIGOT-5457 sent by client when interact event cancelled - this.world.a(this.player.getId(), this.g, -1); - this.player.playerConnection.sendPacket(new PacketPlayOutBlockBreak(this.g, this.world.getType(this.g), packetplayinblockdig_enumplayerdigtype, true, "aborted mismatched destroying")); + IBlockData type = this.world.getTypeIfLoaded(this.g); // Paper - don't load unloaded chunks for stale records here + if (type != null) this.world.a(this.player.getId(), this.g, -1); // Paper + if (type != null) this.player.playerConnection.sendPacket(new PacketPlayOutBlockBreak(this.g, type, packetplayinblockdig_enumplayerdigtype, true, "aborted mismatched destroying")); // Paper + this.g = BlockPosition.ZERO; // Paper } this.world.a(this.player.getId(), blockposition, -1);