mirror of
https://github.com/PaperMC/Paper.git
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170 lines
11 KiB
Diff
170 lines
11 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/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
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index 75d827f1eecb24f7ab985bdea2bbf65b8478fc8c..d646660f988994d4fdb05901349c5946a2f6c48c 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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@@ -168,6 +168,7 @@ public class Explosion {
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for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
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BlockPos blockposition = BlockPos.containing(d4, d5, d6);
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BlockState iblockdata = this.level.getBlockState(blockposition);
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+ if (!iblockdata.isDestroyable()) continue; // Paper
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FluidState fluid = iblockdata.getFluidState(); // Paper
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if (!this.level.isInWorldBounds(blockposition)) {
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@@ -369,7 +370,7 @@ public class Explosion {
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}
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// CraftBukkit end
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- if (!iblockdata.isAir()) {
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+ if (!iblockdata.isAir() && iblockdata.isDestroyable()) { // Paper
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BlockPos blockposition1 = blockposition.immutable();
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this.level.getProfiler().push("explosion_blocks");
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diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
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index fd4de9ace0cce48b7c73bbe1d351db4053915a9a..7dc9b87c50590422e9912e4385c9983bcac343b8 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
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+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -434,6 +434,10 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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public boolean setBlock(BlockPos pos, BlockState state, int flags, int maxUpdateDepth) {
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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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+ BlockState type = getBlockState(pos);
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+ if (!type.isDestroyable()) return false;
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+ // Paper end
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CraftBlockState blockstate = this.capturedBlockStates.get(pos);
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if (blockstate == null) {
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blockstate = CapturedBlockState.getTreeBlockState(this, pos, flags);
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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 7646b66bc5ba0288608de0d836c7307e02eebe67..36b196c8834c4eb873bfca0b12f1fc2b421ea071 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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@@ -88,6 +88,19 @@ public class Block extends BlockBehaviour implements ItemLike {
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protected final StateDefinition<Block, BlockState> stateDefinition;
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private BlockState defaultBlockState;
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// Paper start
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+ public final boolean isDestroyable() {
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+ return io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowPermanentBlockBreakExploits ||
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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/PistonBaseBlock.java b/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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index 9e70f5ba6ff0935d245f357131b062c1cc7058fc..4f6b7ed4809086811f0460544ba2ec0606f0f5da 100644
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--- a/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/piston/PistonBaseBlock.java
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@@ -199,6 +199,12 @@ public class PistonBaseBlock extends DirectionalBlock {
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@Override
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public boolean triggerEvent(BlockState state, Level world, BlockPos pos, int type, int data) {
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Direction enumdirection = (Direction) state.getValue(PistonBaseBlock.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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+ Direction directionQueuedAs = Direction.from3DDataValue(data & 7); // Paper - copied from below
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+ if (!io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowPermanentBlockBreakExploits && 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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BlockState iblockdata1 = (BlockState) state.setValue(PistonBaseBlock.EXTENDED, true);
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if (!world.isClientSide) {
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@@ -232,7 +238,7 @@ public class PistonBaseBlock extends DirectionalBlock {
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BlockState iblockdata2 = (BlockState) ((BlockState) Blocks.MOVING_PISTON.defaultBlockState().setValue(MovingPistonBlock.FACING, enumdirection)).setValue(MovingPistonBlock.TYPE, this.isSticky ? PistonType.STICKY : PistonType.DEFAULT);
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world.setBlock(pos, iblockdata2, 20);
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- world.setBlockEntity(MovingPistonBlock.newMovingBlockEntity(pos, iblockdata2, (BlockState) this.defaultBlockState().setValue(PistonBaseBlock.FACING, Direction.from3DDataValue(data & 7)), enumdirection, false, true));
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+ world.setBlockEntity(MovingPistonBlock.newMovingBlockEntity(pos, iblockdata2, (BlockState) this.defaultBlockState().setValue(PistonBaseBlock.FACING, Direction.from3DDataValue(data & 7)), enumdirection, false, true)); // Paper - diff on change
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world.blockUpdated(pos, iblockdata2.getBlock());
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iblockdata2.updateNeighbourShapes(world, pos, 2);
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if (this.isSticky) {
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@@ -261,7 +267,14 @@ public class PistonBaseBlock extends DirectionalBlock {
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}
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}
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} else {
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- world.removeBlock(pos.relative(enumdirection), false);
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+ // Paper start - fix headless pistons breaking blocks
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+ BlockPos headPos = pos.relative(enumdirection);
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+ if (io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowPermanentBlockBreakExploits || world.getBlockState(headPos) == Blocks.PISTON_HEAD.defaultBlockState().setValue(FACING, enumdirection)) { // double check to make sure we're not a headless piston.
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+ world.removeBlock(headPos, false);
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+ } else {
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+ ((ServerLevel)world).getChunkSource().blockChanged(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((Player) null, pos, SoundEvents.PISTON_CONTRACT, SoundSource.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/BlockBehaviour.java b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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index 2451bb61e304fbe5cdfd6bbb248575e9e1135075..74f84bfcb1da6186c7a6783512c2fc7ba995215f 100644
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--- a/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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+++ b/src/main/java/net/minecraft/world/level/block/state/BlockBehaviour.java
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@@ -229,7 +229,7 @@ public abstract class BlockBehaviour implements FeatureElement {
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/** @deprecated */
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@Deprecated
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public boolean canBeReplaced(BlockState state, BlockPlaceContext context) {
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- return state.canBeReplaced() && (context.getItemInHand().isEmpty() || !context.getItemInHand().is(this.asItem()));
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+ return state.canBeReplaced() && (context.getItemInHand().isEmpty() || !context.getItemInHand().is(this.asItem())) && (state.isDestroyable() || (context.getPlayer() != null && context.getPlayer().getAbilities().instabuild)); // Paper;
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}
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/** @deprecated */
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@@ -891,6 +891,12 @@ public abstract class BlockBehaviour implements FeatureElement {
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return this.legacySolid;
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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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+
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public boolean isValidSpawn(BlockGetter world, BlockPos pos, EntityType<?> type) {
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return this.getBlock().properties.isValidSpawn.test(this.asState(), world, pos, type);
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}
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@@ -994,7 +1000,7 @@ public abstract class BlockBehaviour implements FeatureElement {
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}
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public PushReaction getPistonPushReaction() {
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- return this.pushReaction;
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+ return !this.isDestroyable() ? PushReaction.BLOCK : this.pushReaction; // Paper
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}
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public boolean isSolidRender(BlockGetter world, BlockPos pos) {
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diff --git a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
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index 389b63605d416678d35666bbd46e0fa05a02f898..33a6fda1e8f2df61b44f0e3ddda356ffa386f2df 100644
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--- a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
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+++ b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
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@@ -221,6 +221,13 @@ public class PortalForcer {
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for (int j = -1; j < 3; ++j) {
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for (int k = -1; k < 4; ++k) {
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temp.setWithOffset(pos, portalDirection.getStepX() * j + enumdirection1.getStepX() * distanceOrthogonalToPortal, k, portalDirection.getStepZ() * j + enumdirection1.getStepZ() * distanceOrthogonalToPortal);
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+ // Paper start - prevent destroying unbreakable blocks
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+ if (!io.papermc.paper.configuration.GlobalConfiguration.get().unsupportedSettings.allowPermanentBlockBreakExploits) {
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+ if (!this.level.getBlockState(temp).isDestroyable()) {
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+ return false;
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+ }
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+ }
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+ // Paper end - prevent destroying unbreakable blocks
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if (k < 0 && !this.level.getBlockState(temp).isSolid()) {
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return false;
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}
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