mirror of
https://github.com/PaperMC/Paper.git
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c953e51dd7
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing CraftBukkit Changes: 221aed6cf SPIGOT-6413: Server Corruption Changing Blocks in Piston Events 721c4966b SPIGOT-6411: The PlayerEditBookEvent is not called when the player edits a book in the off-hand. be0e94581 Add mc-dev imports Spigot Changes: a25e8ed2 Remove mc-dev imports
173 lines
10 KiB
Diff
173 lines
10 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Wed, 13 May 2020 23:01:26 -0400
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Subject: [PATCH] Protect Bedrock and End Portal/Frames from being destroyed
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This fixes exploits that let players destroy bedrock by Pistons, explosions
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and Mushrooom/Tree generation.
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These blocks are designed to not be broken except by creative players/commands.
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So protect them from a multitude of methods of destroying them.
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A config is provided if you rather let players use these exploits, and let
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them destroy the worlds End Portals and get on top of the nether easy.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 78271b400c79578d043b20a5389a37b1bef9a70d..5f3b0d95cc7e6a0434d78ea7305a70689c41c71c 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -416,4 +416,17 @@ public class PaperConfig {
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private static void midTickChunkTasks() {
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midTickChunkTasks = getInt("settings.chunk-tasks-per-tick", midTickChunkTasks);
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}
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+
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+ public static boolean allowBlockPermanentBreakingExploits = false;
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+ private static void allowBlockPermanentBreakingExploits() {
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+ if (config.contains("allow-perm-block-break-exploits")) {
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+ allowBlockPermanentBreakingExploits = config.getBoolean("allow-perm-block-break-exploits", false);
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+ config.set("allow-perm-block-break-exploits", null);
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+ }
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+
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+ config.set("settings.unsupported-settings.allow-permanent-block-break-exploits-readme", "This setting controls if players should be able to break bedrock, end portals and other intended to be permanent blocks.");
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+ allowBlockPermanentBreakingExploits = getBoolean("settings.unsupported-settings.allow-permanent-block-break-exploits", allowBlockPermanentBreakingExploits);
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+
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+ }
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+
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}
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diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
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index a9ecc2b4da587ca3d3c99f8c8af38092a02fb572..0b3479aae8f7cad7bd0b8b64aa2dead43baf4c56 100644
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--- a/src/main/java/net/minecraft/world/level/Explosion.java
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+++ b/src/main/java/net/minecraft/world/level/Explosion.java
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@@ -153,6 +153,7 @@ public class Explosion {
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for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
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BlockPosition blockposition = new BlockPosition(d4, d5, d6);
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IBlockData iblockdata = this.world.getType(blockposition);
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+ if (!iblockdata.isDestroyable()) continue; // Paper
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Fluid fluid = iblockdata.getFluid(); // Paper
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Optional<Float> optional = this.l.a(this, this.world, blockposition, iblockdata, fluid);
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@@ -306,7 +307,7 @@ public class Explosion {
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IBlockData iblockdata = this.world.getType(blockposition);
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Block block = iblockdata.getBlock();
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- if (!iblockdata.isAir()) {
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+ if (!iblockdata.isAir() && iblockdata.isDestroyable()) { // Paper
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BlockPosition blockposition1 = blockposition.immutableCopy();
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this.world.getMethodProfiler().enter("explosion_blocks");
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diff --git a/src/main/java/net/minecraft/world/level/World.java b/src/main/java/net/minecraft/world/level/World.java
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index 7ead848342bfbb5b20e95d716805f4b4fd36eb63..9369a0c6c0ae2d8518ebfb17f2c93ead2647ab8d 100644
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--- a/src/main/java/net/minecraft/world/level/World.java
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+++ b/src/main/java/net/minecraft/world/level/World.java
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@@ -422,6 +422,10 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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public boolean a(BlockPosition blockposition, IBlockData iblockdata, int i, int j) {
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// CraftBukkit start - tree generation
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if (this.captureTreeGeneration) {
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+ // Paper start
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+ IBlockData type = getType(blockposition);
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+ if (!type.isDestroyable()) return false;
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+ // Paper end
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CraftBlockState blockstate = capturedBlockStates.get(blockposition);
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if (blockstate == null) {
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blockstate = CapturedBlockState.getTreeBlockState(this, blockposition, i);
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diff --git a/src/main/java/net/minecraft/world/level/block/Block.java b/src/main/java/net/minecraft/world/level/block/Block.java
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index e5c43b383a93fac76333a67b41535ab009d1dcf3..cc512bd2e89382e7fdbc59b41640e95ccafbbfe9 100644
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--- a/src/main/java/net/minecraft/world/level/block/Block.java
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+++ b/src/main/java/net/minecraft/world/level/block/Block.java
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@@ -62,6 +62,19 @@ public class Block extends BlockBase implements IMaterial {
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protected final BlockStateList<Block, IBlockData> blockStateList;
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private IBlockData blockData;
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// Paper start
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+ public final boolean isDestroyable() {
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+ return com.destroystokyo.paper.PaperConfig.allowBlockPermanentBreakingExploits ||
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+ this != Blocks.BEDROCK &&
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+ this != Blocks.END_PORTAL_FRAME &&
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+ this != Blocks.END_PORTAL &&
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+ this != Blocks.END_GATEWAY &&
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+ this != Blocks.COMMAND_BLOCK &&
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+ this != Blocks.REPEATING_COMMAND_BLOCK &&
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+ this != Blocks.CHAIN_COMMAND_BLOCK &&
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+ this != Blocks.BARRIER &&
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+ this != Blocks.STRUCTURE_BLOCK &&
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+ this != Blocks.JIGSAW;
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+ }
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public co.aikar.timings.Timing timing;
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public co.aikar.timings.Timing getTiming() {
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if (timing == null) {
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diff --git a/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java b/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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index 7de86d6232eb84642fb6423a1b0a9f30d9df9f2b..e062fd288098127fae22a55562e0207ceaf50163 100644
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--- a/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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+++ b/src/main/java/net/minecraft/world/level/block/piston/BlockPiston.java
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@@ -194,6 +194,12 @@ public class BlockPiston extends BlockDirectional {
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@Override
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public boolean a(IBlockData iblockdata, World world, BlockPosition blockposition, int i, int j) {
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EnumDirection enumdirection = (EnumDirection) iblockdata.get(BlockPiston.FACING);
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+ // Paper start - prevent retracting when we're facing the wrong way (we were replaced before retraction could occur)
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+ EnumDirection directionQueuedAs = EnumDirection.fromType1(j & 7); // Paper - copied from below
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+ if (!com.destroystokyo.paper.PaperConfig.allowBlockPermanentBreakingExploits && enumdirection != directionQueuedAs) {
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+ return false;
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+ }
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+ // Paper end - prevent retracting when we're facing the wrong way
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if (!world.isClientSide) {
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boolean flag = this.a(world, blockposition, enumdirection);
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@@ -225,7 +231,7 @@ public class BlockPiston extends BlockDirectional {
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IBlockData iblockdata1 = (IBlockData) ((IBlockData) Blocks.MOVING_PISTON.getBlockData().set(BlockPistonMoving.a, enumdirection)).set(BlockPistonMoving.b, this.sticky ? BlockPropertyPistonType.STICKY : BlockPropertyPistonType.DEFAULT);
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world.setTypeAndData(blockposition, iblockdata1, 20);
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- world.setTileEntity(blockposition, BlockPistonMoving.a((IBlockData) this.getBlockData().set(BlockPiston.FACING, EnumDirection.fromType1(j & 7)), enumdirection, false, true));
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+ world.setTileEntity(blockposition, BlockPistonMoving.a((IBlockData) this.getBlockData().set(BlockPiston.FACING, EnumDirection.fromType1(j & 7)), enumdirection, false, true)); // Paper - diff on change, j is facing direction - copy this above
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world.update(blockposition, iblockdata1.getBlock());
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iblockdata1.a(world, blockposition, 2);
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if (this.sticky) {
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@@ -254,7 +260,14 @@ public class BlockPiston extends BlockDirectional {
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}
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}
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} else {
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- world.a(blockposition.shift(enumdirection), false);
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+ // Paper start - fix headless pistons breaking blocks
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+ BlockPosition headPos = blockposition.shift(enumdirection);
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+ if (com.destroystokyo.paper.PaperConfig.allowBlockPermanentBreakingExploits || world.getType(headPos) == Blocks.PISTON_HEAD.getBlockData().set(FACING, enumdirection)) { // double check to make sure we're not a headless piston.
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+ world.setAir(headPos, false);
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+ } else {
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+ ((WorldServer)world).getChunkProvider().flagDirty(headPos); // ... fix client desync
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+ }
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+ // Paper end - fix headless pistons breaking blocks
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}
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world.playSound((EntityHuman) null, blockposition, SoundEffects.BLOCK_PISTON_CONTRACT, SoundCategory.BLOCKS, 0.5F, world.random.nextFloat() * 0.15F + 0.6F);
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diff --git a/src/main/java/net/minecraft/world/level/block/state/BlockBase.java b/src/main/java/net/minecraft/world/level/block/state/BlockBase.java
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index 57857cc33603cf278de424b540a3d4a5943584c9..2a785ea58a7bdc80c703a60bc6ed602dc8040aa0 100644
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--- a/src/main/java/net/minecraft/world/level/block/state/BlockBase.java
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+++ b/src/main/java/net/minecraft/world/level/block/state/BlockBase.java
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@@ -190,7 +190,7 @@ public abstract class BlockBase {
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@Deprecated
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public boolean a(IBlockData iblockdata, BlockActionContext blockactioncontext) {
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- return this.material.isReplaceable() && (blockactioncontext.getItemStack().isEmpty() || blockactioncontext.getItemStack().getItem() != this.getItem());
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+ return this.material.isReplaceable() && (blockactioncontext.getItemStack().isEmpty() || blockactioncontext.getItemStack().getItem() != this.getItem()) && (iblockdata.isDestroyable() || (blockactioncontext.getEntity() != null && blockactioncontext.getEntity().abilities.canInstantlyBuild)); // Paper
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}
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@Deprecated
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@@ -394,7 +394,11 @@ public abstract class BlockBase {
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public Block getBlock() {
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return (Block) this.c;
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}
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-
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+ // Paper start
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+ public final boolean isDestroyable() {
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+ return getBlock().isDestroyable();
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+ }
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+ // Paper end
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public Material getMaterial() {
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return this.g;
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}
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@@ -484,7 +488,7 @@ public abstract class BlockBase {
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}
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public EnumPistonReaction getPushReaction() {
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- return this.getBlock().getPushReaction(this.p());
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+ return !isDestroyable() ? EnumPistonReaction.BLOCK : this.getBlock().getPushReaction(this.p()); // Paper
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}
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public boolean i(IBlockAccess iblockaccess, BlockPosition blockposition) {
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