118 lines
6.3 KiB
Diff
118 lines
6.3 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 3ee7e5671dd2519cec72b81211f1f39176a228ba..cf9b9de8688e3f655631451409096d7ec0471910 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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@@ -431,4 +431,10 @@ 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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+ allowBlockPermanentBreakingExploits = getBoolean("allow-perm-block-break-exploits", allowBlockPermanentBreakingExploits);
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+ }
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+
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}
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diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
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index e40375b67a4a321048c87002a07fde5c5d2395db..d051a54aa04326f84e211cd68ddd2bb209230770 100644
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--- a/src/main/java/net/minecraft/server/Block.java
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+++ b/src/main/java/net/minecraft/server/Block.java
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@@ -32,6 +32,13 @@ public class Block implements IMaterial {
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protected final SoundEffectType stepSound;
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protected final Material material;
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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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+ }
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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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@@ -276,7 +283,7 @@ public class Block implements IMaterial {
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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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@@ -596,7 +603,7 @@ public class Block implements IMaterial {
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@Deprecated
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public EnumPistonReaction getPushReaction(IBlockData iblockdata) {
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- return this.material.getPushReaction();
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+ return !blockData.isDestroyable() ? EnumPistonReaction.BLOCK : this.material.getPushReaction(); // Paper
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}
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public void fallOn(World world, BlockPosition blockposition, Entity entity, float f) {
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diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
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index a353f3d5fa5a5f54335f73584589de3f5cb20d3e..2552f860ff7a25f74e9a0600e58cefe064fac484 100644
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--- a/src/main/java/net/minecraft/server/Explosion.java
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+++ b/src/main/java/net/minecraft/server/Explosion.java
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@@ -117,6 +117,7 @@ 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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if (!iblockdata.isAir() || !fluid.isEmpty()) {
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@@ -282,7 +283,7 @@ 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/server/IBlockData.java b/src/main/java/net/minecraft/server/IBlockData.java
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index b19bbbbc81376177751396a2de9452ce1f84c06b..296b41bf36ee1ace5bd9db2b810bf926b5f5278f 100644
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--- a/src/main/java/net/minecraft/server/IBlockData.java
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+++ b/src/main/java/net/minecraft/server/IBlockData.java
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@@ -52,6 +52,11 @@ public class IBlockData extends BlockDataAbstract<Block, IBlockData> implements
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return (CraftBlockData) cachedCraftBlockData.clone();
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}
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// Paper end
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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.getBlock().k(this);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index e82b8b9a4dbc9a595df7d8e56596a93fde7b687a..561b42472261a973fea6344d76ca7ea1993aee27 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -342,6 +342,10 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
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public boolean setTypeAndData(BlockPosition blockposition, IBlockData iblockdata, int i) {
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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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