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555f99d390
Paper/patches/server/0367-Anti-Xray.patch
Jake Potrebic 555f99d390
cleanup: Add hand to bucket events patch (#6881)
2021-11-15 20:01:19 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: stonar96 <minecraft.stonar96@gmail.com>
Date: Mon, 20 Aug 2018 03:03:58 +0200
Subject: [PATCH] Anti-Xray
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 5707befe1c64df3e01fe810459d716d550b7daa8..5dd6d78742212ae4756f7bc7d7699521cb280ee0 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -1,10 +1,12 @@
package com.destroystokyo.paper;
+import java.util.Arrays;
import java.util.List;
import it.unimi.dsi.fastutil.objects.Reference2IntMap;
import it.unimi.dsi.fastutil.objects.Reference2IntOpenHashMap;
import net.minecraft.world.entity.MobCategory;
+import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.EngineMode;
import org.bukkit.Bukkit;
import org.bukkit.configuration.file.YamlConfiguration;
import org.spigotmc.SpigotWorldConfig;
@@ -525,5 +527,40 @@ public class PaperWorldConfig {
private void lightQueueSize() {
lightQueueSize = getInt("light-queue-size", lightQueueSize);
}
+
+ public boolean antiXray;
+ public EngineMode engineMode;
+ public int maxBlockHeight;
+ public int updateRadius;
+ public boolean lavaObscures;
+ public boolean usePermission;
+ public List<String> hiddenBlocks;
+ public List<String> replacementBlocks;
+ private void antiXray() {
+ antiXray = getBoolean("anti-xray.enabled", false);
+ engineMode = EngineMode.getById(getInt("anti-xray.engine-mode", EngineMode.HIDE.getId()));
+ engineMode = engineMode == null ? EngineMode.HIDE : engineMode;
+ maxBlockHeight = getInt("anti-xray.max-block-height", 64);
+ updateRadius = getInt("anti-xray.update-radius", 2);
+ lavaObscures = getBoolean("anti-xray.lava-obscures", false);
+ usePermission = getBoolean("anti-xray.use-permission", false);
+ hiddenBlocks = getList("anti-xray.hidden-blocks", Arrays.asList("copper_ore", "deepslate_copper_ore", "gold_ore", "deepslate_gold_ore", "iron_ore", "deepslate_iron_ore",
+ "coal_ore", "deepslate_coal_ore", "lapis_ore", "deepslate_lapis_ore", "mossy_cobblestone", "obsidian", "chest", "diamond_ore", "deepslate_diamond_ore",
+ "redstone_ore", "deepslate_redstone_ore", "clay", "emerald_ore", "deepslate_emerald_ore", "ender_chest"));
+ replacementBlocks = getList("anti-xray.replacement-blocks", Arrays.asList("stone", "oak_planks", "deepslate"));
+ if (PaperConfig.version < 19) {
+ hiddenBlocks.remove("lit_redstone_ore");
+ int index = replacementBlocks.indexOf("planks");
+ if (index != -1) {
+ replacementBlocks.set(index, "oak_planks");
+ }
+ set("anti-xray.hidden-blocks", hiddenBlocks);
+ set("anti-xray.replacement-blocks", replacementBlocks);
+ }
+ log("Anti-Xray: " + (antiXray ? "enabled" : "disabled") + " / Engine Mode: " + engineMode.getDescription() + " / Up to " + ((maxBlockHeight >> 4) << 4) + " blocks / Update Radius: " + updateRadius);
+ if (antiXray && usePermission) {
+ Bukkit.getLogger().warning("You have enabled permission-based Anti-Xray checking - depending on your permission plugin, this may cause performance issues");
+ }
+ }
}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java b/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java
new file mode 100644
index 0000000000000000000000000000000000000000..e448c26327b5f6189c3c52e698cff66c8f9ad81a
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java
@@ -0,0 +1,51 @@
+package com.destroystokyo.paper.antixray;
+
+public final class BitStorageReader {
+
+ private byte[] buffer;
+ private int bits;
+ private int mask;
+ private int longInBufferIndex;
+ private int bitInLongIndex;
+ private long current;
+
+ public void setBuffer(byte[] buffer) {
+ this.buffer = buffer;
+ }
+
+ public void setBits(int bits) {
+ this.bits = bits;
+ mask = (1 << bits) - 1;
+ }
+
+ public void setIndex(int index) {
+ longInBufferIndex = index;
+ bitInLongIndex = 0;
+ init();
+ }
+
+ private void init() {
+ if (buffer.length > longInBufferIndex + 7) {
+ current = ((((long) buffer[longInBufferIndex]) << 56)
+ | (((long) buffer[longInBufferIndex + 1] & 0xff) << 48)
+ | (((long) buffer[longInBufferIndex + 2] & 0xff) << 40)
+ | (((long) buffer[longInBufferIndex + 3] & 0xff) << 32)
+ | (((long) buffer[longInBufferIndex + 4] & 0xff) << 24)
+ | (((long) buffer[longInBufferIndex + 5] & 0xff) << 16)
+ | (((long) buffer[longInBufferIndex + 6] & 0xff) << 8)
+ | (((long) buffer[longInBufferIndex + 7] & 0xff)));
+ }
+ }
+
+ public int read() {
+ if (bitInLongIndex + bits > 64) {
+ bitInLongIndex = 0;
+ longInBufferIndex += 8;
+ init();
+ }
+
+ int value = (int) (current >>> bitInLongIndex) & mask;
+ bitInLongIndex += bits;
+ return value;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java b/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java
new file mode 100644
index 0000000000000000000000000000000000000000..e4540ea278f2dc871cb6a3cb8897559bfd65e134
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java
@@ -0,0 +1,79 @@
+package com.destroystokyo.paper.antixray;
+
+public final class BitStorageWriter {
+
+ private byte[] buffer;
+ private int bits;
+ private long mask;
+ private int longInBufferIndex;
+ private int bitInLongIndex;
+ private long current;
+ private boolean dirty;
+
+ public void setBuffer(byte[] buffer) {
+ this.buffer = buffer;
+ }
+
+ public void setBits(int bits) {
+ this.bits = bits;
+ mask = (1L << bits) - 1;
+ }
+
+ public void setIndex(int index) {
+ longInBufferIndex = index;
+ bitInLongIndex = 0;
+ init();
+ }
+
+ private void init() {
+ if (buffer.length > longInBufferIndex + 7) {
+ current = ((((long) buffer[longInBufferIndex]) << 56)
+ | (((long) buffer[longInBufferIndex + 1] & 0xff) << 48)
+ | (((long) buffer[longInBufferIndex + 2] & 0xff) << 40)
+ | (((long) buffer[longInBufferIndex + 3] & 0xff) << 32)
+ | (((long) buffer[longInBufferIndex + 4] & 0xff) << 24)
+ | (((long) buffer[longInBufferIndex + 5] & 0xff) << 16)
+ | (((long) buffer[longInBufferIndex + 6] & 0xff) << 8)
+ | (((long) buffer[longInBufferIndex + 7] & 0xff)));
+ }
+
+ dirty = false;
+ }
+
+ public void flush() {
+ if (dirty && buffer.length > longInBufferIndex + 7) {
+ buffer[longInBufferIndex] = (byte) (current >> 56 & 0xff);
+ buffer[longInBufferIndex + 1] = (byte) (current >> 48 & 0xff);
+ buffer[longInBufferIndex + 2] = (byte) (current >> 40 & 0xff);
+ buffer[longInBufferIndex + 3] = (byte) (current >> 32 & 0xff);
+ buffer[longInBufferIndex + 4] = (byte) (current >> 24 & 0xff);
+ buffer[longInBufferIndex + 5] = (byte) (current >> 16 & 0xff);
+ buffer[longInBufferIndex + 6] = (byte) (current >> 8 & 0xff);
+ buffer[longInBufferIndex + 7] = (byte) (current & 0xff);
+ }
+ }
+
+ public void write(int value) {
+ if (bitInLongIndex + bits > 64) {
+ flush();
+ bitInLongIndex = 0;
+ longInBufferIndex += 8;
+ init();
+ }
+
+ current = current & ~(mask << bitInLongIndex) | (value & mask) << bitInLongIndex;
+ dirty = true;
+ bitInLongIndex += bits;
+ }
+
+ public void skip() {
+ bitInLongIndex += bits;
+
+ if (bitInLongIndex > 64) {
+ flush();
+ bitInLongIndex = bits;
+ longInBufferIndex += 8;
+ init();
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java
new file mode 100644
index 0000000000000000000000000000000000000000..280ece653cdda74e9c8fab4e9e5b3a952901cb01
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java
@@ -0,0 +1,46 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.network.protocol.game.ClientboundLevelChunkPacket;
+import net.minecraft.network.protocol.game.ServerboundPlayerActionPacket;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.ServerPlayerGameMode;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.chunk.ChunkAccess;
+import net.minecraft.world.level.chunk.LevelChunk;
+import net.minecraft.world.level.chunk.LevelChunkSection;
+
+public class ChunkPacketBlockController {
+
+ public static final ChunkPacketBlockController NO_OPERATION_INSTANCE = new ChunkPacketBlockController();
+
+ protected ChunkPacketBlockController() {
+
+ }
+
+ public BlockState[] getPresetBlockStates(Level level, ChunkAccess chunk, LevelChunkSection chunkSection, boolean initializeBlocks) {
+ return null;
+ }
+
+ public boolean shouldModify(ServerPlayer player, LevelChunk chunk) {
+ return false;
+ }
+
+ public ChunkPacketInfo<BlockState> getChunkPacketInfo(ClientboundLevelChunkPacket chunkPacket, LevelChunk chunk) {
+ return null;
+ }
+
+ public void modifyBlocks(ClientboundLevelChunkPacket chunkPacket, ChunkPacketInfo<BlockState> chunkPacketInfo) {
+ chunkPacket.setReady(true);
+ }
+
+ public void onBlockChange(Level level, BlockPos blockPos, BlockState newBlockState, BlockState oldBlockState, int flags, int maxUpdateDepth) {
+
+ }
+
+ public void onPlayerLeftClickBlock(ServerPlayerGameMode serverPlayerGameMode, BlockPos blockPos, ServerboundPlayerActionPacket.Action action, Direction direction, int worldHeight) {
+
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java
new file mode 100644
index 0000000000000000000000000000000000000000..58052a5f773b5882acd90bc0214a36e8a512817c
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java
@@ -0,0 +1,635 @@
+package com.destroystokyo.paper.antixray;
+
+import com.destroystokyo.paper.PaperWorldConfig;
+import net.minecraft.core.BlockPos;
+import net.minecraft.core.Direction;
+import net.minecraft.core.Registry;
+import net.minecraft.network.protocol.game.ClientboundLevelChunkPacket;
+import net.minecraft.network.protocol.game.ServerboundPlayerActionPacket;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.ServerPlayer;
+import net.minecraft.server.level.ServerPlayerGameMode;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.EntityBlock;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.chunk.*;
+import org.bukkit.Bukkit;
+
+import java.util.*;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.function.IntSupplier;
+
+public final class ChunkPacketBlockControllerAntiXray extends ChunkPacketBlockController {
+
+ private final Executor executor;
+ private final EngineMode engineMode;
+ private final int maxBlockHeight;
+ private final int updateRadius;
+ private final boolean usePermission;
+ private final BlockState[] presetBlockStates;
+ private final BlockState[] presetBlockStatesFull;
+ private final BlockState[] presetBlockStatesStone;
+ private final BlockState[] presetBlockStatesNetherrack;
+ private final BlockState[] presetBlockStatesEndStone;
+ private final int[] presetBlockStateBitsGlobal;
+ private final int[] presetBlockStateBitsStoneGlobal;
+ private final int[] presetBlockStateBitsNetherrackGlobal;
+ private final int[] presetBlockStateBitsEndStoneGlobal;
+ private final boolean[] solidGlobal = new boolean[Block.BLOCK_STATE_REGISTRY.size()];
+ private final boolean[] obfuscateGlobal = new boolean[Block.BLOCK_STATE_REGISTRY.size()];
+ private final LevelChunkSection[] emptyNearbyChunkSections = {LevelChunk.EMPTY_SECTION, LevelChunk.EMPTY_SECTION, LevelChunk.EMPTY_SECTION, LevelChunk.EMPTY_SECTION};
+ private final int maxBlockHeightUpdatePosition;
+
+ public ChunkPacketBlockControllerAntiXray(Level level, Executor executor) {
+ this.executor = executor;
+ PaperWorldConfig paperWorldConfig = level.paperConfig;
+ engineMode = paperWorldConfig.engineMode;
+ maxBlockHeight = paperWorldConfig.maxBlockHeight >> 4 << 4;
+ updateRadius = paperWorldConfig.updateRadius;
+ usePermission = paperWorldConfig.usePermission;
+ List<String> toObfuscate;
+
+ if (engineMode == EngineMode.HIDE) {
+ toObfuscate = paperWorldConfig.hiddenBlocks;
+ presetBlockStates = null;
+ presetBlockStatesFull = null;
+ presetBlockStatesStone = new BlockState[]{Blocks.STONE.defaultBlockState()};
+ presetBlockStatesNetherrack = new BlockState[]{Blocks.NETHERRACK.defaultBlockState()};
+ presetBlockStatesEndStone = new BlockState[]{Blocks.END_STONE.defaultBlockState()};
+ presetBlockStateBitsGlobal = null;
+ presetBlockStateBitsStoneGlobal = new int[]{LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.STONE.defaultBlockState())};
+ presetBlockStateBitsNetherrackGlobal = new int[]{LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.NETHERRACK.defaultBlockState())};
+ presetBlockStateBitsEndStoneGlobal = new int[]{LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.END_STONE.defaultBlockState())};
+ } else {
+ toObfuscate = new ArrayList<>(paperWorldConfig.replacementBlocks);
+ List<BlockState> presetBlockStateList = new LinkedList<>();
+
+ for (String id : paperWorldConfig.hiddenBlocks) {
+ Block block = Registry.BLOCK.getOptional(new ResourceLocation(id)).orElse(null);
+
+ if (block != null && !(block instanceof EntityBlock)) {
+ toObfuscate.add(id);
+ presetBlockStateList.add(block.defaultBlockState());
+ }
+ }
+
+ // The doc of the LinkedHashSet(Collection<? extends E>) constructor doesn't specify that the insertion order is the predictable iteration order of the specified Collection, although it is in the implementation
+ Set<BlockState> presetBlockStateSet = new LinkedHashSet<>();
+ // Therefore addAll(Collection<? extends E>) is used, which guarantees this order in the doc
+ presetBlockStateSet.addAll(presetBlockStateList);
+ presetBlockStates = presetBlockStateSet.isEmpty() ? new BlockState[]{Blocks.DIAMOND_ORE.defaultBlockState()} : presetBlockStateSet.toArray(new BlockState[0]);
+ presetBlockStatesFull = presetBlockStateSet.isEmpty() ? new BlockState[]{Blocks.DIAMOND_ORE.defaultBlockState()} : presetBlockStateList.toArray(new BlockState[0]);
+ presetBlockStatesStone = null;
+ presetBlockStatesNetherrack = null;
+ presetBlockStatesEndStone = null;
+ presetBlockStateBitsGlobal = new int[presetBlockStatesFull.length];
+
+ for (int i = 0; i < presetBlockStatesFull.length; i++) {
+ presetBlockStateBitsGlobal[i] = LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(presetBlockStatesFull[i]);
+ }
+
+ presetBlockStateBitsStoneGlobal = null;
+ presetBlockStateBitsNetherrackGlobal = null;
+ presetBlockStateBitsEndStoneGlobal = null;
+ }
+
+ for (String id : toObfuscate) {
+ Block block = Registry.BLOCK.getOptional(new ResourceLocation(id)).orElse(null);
+
+ // Don't obfuscate air because air causes unnecessary block updates and causes block updates to fail in the void
+ if (block != null && !block.defaultBlockState().isAir()) {
+ // Replace all block states of a specified block
+ for (BlockState blockState : block.getStateDefinition().getPossibleStates()) {
+ obfuscateGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(blockState)] = true;
+ }
+ }
+ }
+
+ EmptyLevelChunk emptyChunk = new EmptyLevelChunk(level, new ChunkPos(0, 0));
+ BlockPos zeroPos = new BlockPos(0, 0, 0);
+
+ for (int i = 0; i < solidGlobal.length; i++) {
+ BlockState blockState = LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.valueFor(i);
+
+ if (blockState != null) {
+ solidGlobal[i] = blockState.isRedstoneConductor(emptyChunk, zeroPos)
+ && blockState.getBlock() != Blocks.SPAWNER && blockState.getBlock() != Blocks.BARRIER && blockState.getBlock() != Blocks.SHULKER_BOX && blockState.getBlock() != Blocks.SLIME_BLOCK || paperWorldConfig.lavaObscures && blockState == Blocks.LAVA.defaultBlockState();
+ // Comparing blockState == Blocks.LAVA.defaultBlockState() instead of blockState.getBlock() == Blocks.LAVA ensures that only "stationary lava" is used
+ // shulker box checks TE.
+ }
+ }
+
+ maxBlockHeightUpdatePosition = maxBlockHeight + updateRadius - 1;
+ }
+
+ private int getPresetBlockStatesFullLength() {
+ return engineMode == EngineMode.HIDE ? 1 : presetBlockStatesFull.length;
+ }
+
+ @Override
+ public BlockState[] getPresetBlockStates(Level level, ChunkAccess chunk, LevelChunkSection chunkSection, boolean initializeBlocks) {
+ // Return the block states to be added to the paletted containers so that they can be used for obfuscation
+ if (chunkSection.bottomBlockY() < maxBlockHeight) {
+ if (engineMode == EngineMode.HIDE) {
+ return switch (level.getWorld().getEnvironment()) {
+ case NETHER -> presetBlockStatesNetherrack;
+ case THE_END -> presetBlockStatesEndStone;
+ default -> presetBlockStatesStone;
+ };
+ }
+
+ return presetBlockStates;
+ }
+
+ return null;
+ }
+
+ @Override
+ public boolean shouldModify(ServerPlayer player, LevelChunk chunk) {
+ return !usePermission || !player.getBukkitEntity().hasPermission("paper.antixray.bypass");
+ }
+
+ @Override
+ public ChunkPacketInfoAntiXray getChunkPacketInfo(ClientboundLevelChunkPacket chunkPacket, LevelChunk chunk) {
+ // Return a new instance to collect data and objects in the right state while creating the chunk packet for thread safe access later
+ return new ChunkPacketInfoAntiXray(chunkPacket, chunk, this);
+ }
+
+ @Override
+ public void modifyBlocks(ClientboundLevelChunkPacket chunkPacket, ChunkPacketInfo<BlockState> chunkPacketInfo) {
+ if (!(chunkPacketInfo instanceof ChunkPacketInfoAntiXray)) {
+ chunkPacket.setReady(true);
+ return;
+ }
+
+ if (!Bukkit.isPrimaryThread()) {
+ // Plugins?
+ MinecraftServer.getServer().scheduleOnMain(() -> modifyBlocks(chunkPacket, chunkPacketInfo));
+ return;
+ }
+
+ LevelChunk chunk = chunkPacketInfo.getChunk();
+ int x = chunk.getPos().x;
+ int z = chunk.getPos().z;
+ Level level = chunk.level;
+ ((ChunkPacketInfoAntiXray) chunkPacketInfo).setNearbyChunks(level.getChunkIfLoaded(x - 1, z), level.getChunkIfLoaded(x + 1, z), level.getChunkIfLoaded(x, z - 1), level.getChunkIfLoaded(x, z + 1));
+ executor.execute((Runnable) chunkPacketInfo);
+ }
+
+ // Actually these fields should be variables inside the obfuscate method but in sync mode or with SingleThreadExecutor in async mode it's okay (even without ThreadLocal)
+ // If an ExecutorService with multiple threads is used, ThreadLocal must be used here
+ private final ThreadLocal<int[]> presetBlockStateBits = ThreadLocal.withInitial(() -> new int[getPresetBlockStatesFullLength()]);
+ private static final ThreadLocal<boolean[]> solid = ThreadLocal.withInitial(() -> new boolean[Block.BLOCK_STATE_REGISTRY.size()]);
+ private static final ThreadLocal<boolean[]> obfuscate = ThreadLocal.withInitial(() -> new boolean[Block.BLOCK_STATE_REGISTRY.size()]);
+ // These boolean arrays represent chunk layers, true means don't obfuscate, false means obfuscate
+ private static final ThreadLocal<boolean[][]> current = ThreadLocal.withInitial(() -> new boolean[16][16]);
+ private static final ThreadLocal<boolean[][]> next = ThreadLocal.withInitial(() -> new boolean[16][16]);
+ private static final ThreadLocal<boolean[][]> nextNext = ThreadLocal.withInitial(() -> new boolean[16][16]);
+
+ public void obfuscate(ChunkPacketInfoAntiXray chunkPacketInfoAntiXray) {
+ int[] presetBlockStateBits = this.presetBlockStateBits.get();
+ boolean[] solid = ChunkPacketBlockControllerAntiXray.solid.get();
+ boolean[] obfuscate = ChunkPacketBlockControllerAntiXray.obfuscate.get();
+ boolean[][] current = ChunkPacketBlockControllerAntiXray.current.get();
+ boolean[][] next = ChunkPacketBlockControllerAntiXray.next.get();
+ boolean[][] nextNext = ChunkPacketBlockControllerAntiXray.nextNext.get();
+ // bitStorageReader, bitStorageWriter and nearbyChunkSections could also be reused (with ThreadLocal if necessary) but it's not worth it
+ BitStorageReader bitStorageReader = new BitStorageReader();
+ BitStorageWriter bitStorageWriter = new BitStorageWriter();
+ LevelChunkSection[] nearbyChunkSections = new LevelChunkSection[4];
+ LevelChunk chunk = chunkPacketInfoAntiXray.getChunk();
+ Level level = chunk.level;
+ int maxChunkSectionIndex = Math.min((maxBlockHeight >> 4) - chunk.getMinSection(), chunk.getSectionsCount() - 1);
+ boolean[] solidTemp = null;
+ boolean[] obfuscateTemp = null;
+ bitStorageReader.setBuffer(chunkPacketInfoAntiXray.getBuffer());
+ bitStorageWriter.setBuffer(chunkPacketInfoAntiXray.getBuffer());
+ int numberOfBlocks = presetBlockStateBits.length;
+ // Keep the lambda expressions as simple as possible. They are used very frequently.
+ IntSupplier random = numberOfBlocks == 1 ? (() -> 0) : new IntSupplier() {
+ private int state;
+
+ {
+ while ((state = ThreadLocalRandom.current().nextInt()) == 0) ;
+ }
+
+ @Override
+ public int getAsInt() {
+ // https://en.wikipedia.org/wiki/Xorshift
+ state ^= state << 13;
+ state ^= state >>> 17;
+ state ^= state << 5;
+ // https://www.pcg-random.org/posts/bounded-rands.html
+ return (int) ((Integer.toUnsignedLong(state) * numberOfBlocks) >>> 32);
+ }
+ };
+
+ for (int chunkSectionIndex = 0; chunkSectionIndex <= maxChunkSectionIndex; chunkSectionIndex++) {
+ if (chunkPacketInfoAntiXray.isWritten(chunkSectionIndex) && chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex) != null) {
+ int[] presetBlockStateBitsTemp;
+
+ if (chunkPacketInfoAntiXray.getPalette(chunkSectionIndex) == LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE) {
+ if (engineMode == EngineMode.HIDE) {
+ presetBlockStateBitsTemp = switch (level.getWorld().getEnvironment()) {
+ case NETHER -> presetBlockStateBitsNetherrackGlobal;
+ case THE_END -> presetBlockStateBitsEndStoneGlobal;
+ default -> presetBlockStateBitsStoneGlobal;
+ };
+ } else {
+ presetBlockStateBitsTemp = presetBlockStateBitsGlobal;
+ }
+ } else {
+ // If it's presetBlockStates, use this.presetBlockStatesFull instead
+ BlockState[] presetBlockStatesFull = chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex) == presetBlockStates ? this.presetBlockStatesFull : chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex);
+ presetBlockStateBitsTemp = presetBlockStateBits;
+
+ for (int i = 0; i < presetBlockStateBitsTemp.length; i++) {
+ presetBlockStateBitsTemp[i] = chunkPacketInfoAntiXray.getPalette(chunkSectionIndex).idFor(presetBlockStatesFull[i]);
+ }
+ }
+
+ bitStorageWriter.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex));
+
+ // Check if the chunk section below was not obfuscated
+ if (chunkSectionIndex == 0 || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex - 1) || chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex - 1) == null) {
+ // If so, initialize some stuff
+ bitStorageReader.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex));
+ bitStorageReader.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex));
+ solidTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex), solid, solidGlobal);
+ obfuscateTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex), obfuscate, obfuscateGlobal);
+ // Read the blocks of the upper layer of the chunk section below if it exists
+ LevelChunkSection belowChunkSection = null;
+ boolean skipFirstLayer = chunkSectionIndex == 0 || (belowChunkSection = chunk.getSections()[chunkSectionIndex - 1]) == LevelChunk.EMPTY_SECTION;
+
+ for (int z = 0; z < 16; z++) {
+ for (int x = 0; x < 16; x++) {
+ current[z][x] = true;
+ next[z][x] = skipFirstLayer || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(belowChunkSection.getBlockState(x, 15, z))];
+ }
+ }
+
+ // Abuse the obfuscateLayer method to read the blocks of the first layer of the current chunk section
+ bitStorageWriter.setBits(0);
+ obfuscateLayer(-1, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, emptyNearbyChunkSections, random);
+ }
+
+ bitStorageWriter.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex));
+ nearbyChunkSections[0] = chunkPacketInfoAntiXray.getNearbyChunks()[0] == null ? LevelChunk.EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[0].getSections()[chunkSectionIndex];
+ nearbyChunkSections[1] = chunkPacketInfoAntiXray.getNearbyChunks()[1] == null ? LevelChunk.EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[1].getSections()[chunkSectionIndex];
+ nearbyChunkSections[2] = chunkPacketInfoAntiXray.getNearbyChunks()[2] == null ? LevelChunk.EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[2].getSections()[chunkSectionIndex];
+ nearbyChunkSections[3] = chunkPacketInfoAntiXray.getNearbyChunks()[3] == null ? LevelChunk.EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[3].getSections()[chunkSectionIndex];
+
+ // Obfuscate all layers of the current chunk section except the upper one
+ for (int y = 0; y < 15; y++) {
+ boolean[][] temp = current;
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+ obfuscateLayer(y, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
+ // Check if the chunk section above doesn't need obfuscation
+ if (chunkSectionIndex == maxChunkSectionIndex || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex + 1) || chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex + 1) == null) {
+ // If so, obfuscate the upper layer of the current chunk section by reading blocks of the first layer from the chunk section above if it exists
+ LevelChunkSection aboveChunkSection;
+
+ if (chunkSectionIndex != chunk.getSectionsCount() - 1 && (aboveChunkSection = chunk.getSections()[chunkSectionIndex + 1]) != LevelChunk.EMPTY_SECTION) {
+ boolean[][] temp = current;
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+
+ for (int z = 0; z < 16; z++) {
+ for (int x = 0; x < 16; x++) {
+ if (!solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(aboveChunkSection.getBlockState(x, 0, z))]) {
+ current[z][x] = true;
+ }
+ }
+ }
+
+ // There is nothing to read anymore
+ bitStorageReader.setBits(0);
+ solid[0] = true;
+ obfuscateLayer(15, bitStorageReader, bitStorageWriter, solid, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+ } else {
+ // If not, initialize the reader and other stuff for the chunk section above to obfuscate the upper layer of the current chunk section
+ bitStorageReader.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex + 1));
+ bitStorageReader.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex + 1));
+ solidTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex + 1), solid, solidGlobal);
+ obfuscateTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex + 1), obfuscate, obfuscateGlobal);
+ boolean[][] temp = current;
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+ obfuscateLayer(15, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
+ bitStorageWriter.flush();
+ }
+ }
+
+ chunkPacketInfoAntiXray.getChunkPacket().setReady(true);
+ }
+
+ private void obfuscateLayer(int y, BitStorageReader bitStorageReader, BitStorageWriter bitStorageWriter, boolean[] solid, boolean[] obfuscate, int[] presetBlockStateBits, boolean[][] current, boolean[][] next, boolean[][] nextNext, LevelChunkSection[] nearbyChunkSections, IntSupplier random) {
+ // First block of first line
+ int bits = bitStorageReader.read();
+
+ if (nextNext[0][0] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[0][1] = true;
+ next[1][0] = true;
+ } else {
+ if (current[0][0] || nearbyChunkSections[2] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[2].getBlockState(0, y, 15))] || nearbyChunkSections[0] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[0].getBlockState(15, y, 0))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[0][0] = true;
+ }
+
+ // First line
+ for (int x = 1; x < 15; x++) {
+ bits = bitStorageReader.read();
+
+ if (nextNext[0][x] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[0][x - 1] = true;
+ next[0][x + 1] = true;
+ next[1][x] = true;
+ } else {
+ if (current[0][x] || nearbyChunkSections[2] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[2].getBlockState(x, y, 15))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[0][x] = true;
+ }
+ }
+
+ // Last block of first line
+ bits = bitStorageReader.read();
+
+ if (nextNext[0][15] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[0][14] = true;
+ next[1][15] = true;
+ } else {
+ if (current[0][15] || nearbyChunkSections[2] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[2].getBlockState(15, y, 15))] || nearbyChunkSections[1] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[1].getBlockState(0, y, 0))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[0][15] = true;
+ }
+
+ // All inner lines
+ for (int z = 1; z < 15; z++) {
+ // First block
+ bits = bitStorageReader.read();
+
+ if (nextNext[z][0] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[z][1] = true;
+ next[z - 1][0] = true;
+ next[z + 1][0] = true;
+ } else {
+ if (current[z][0] || nearbyChunkSections[0] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[0].getBlockState(15, y, z))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[z][0] = true;
+ }
+
+ // All inner blocks
+ for (int x = 1; x < 15; x++) {
+ bits = bitStorageReader.read();
+
+ if (nextNext[z][x] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[z][x - 1] = true;
+ next[z][x + 1] = true;
+ next[z - 1][x] = true;
+ next[z + 1][x] = true;
+ } else {
+ if (current[z][x]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[z][x] = true;
+ }
+ }
+
+ // Last block
+ bits = bitStorageReader.read();
+
+ if (nextNext[z][15] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[z][14] = true;
+ next[z - 1][15] = true;
+ next[z + 1][15] = true;
+ } else {
+ if (current[z][15] || nearbyChunkSections[1] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[1].getBlockState(0, y, z))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[z][15] = true;
+ }
+ }
+
+ // First block of last line
+ bits = bitStorageReader.read();
+
+ if (nextNext[15][0] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[15][1] = true;
+ next[14][0] = true;
+ } else {
+ if (current[15][0] || nearbyChunkSections[3] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[3].getBlockState(0, y, 0))] || nearbyChunkSections[0] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[0].getBlockState(15, y, 15))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[15][0] = true;
+ }
+
+ // Last line
+ for (int x = 1; x < 15; x++) {
+ bits = bitStorageReader.read();
+
+ if (nextNext[15][x] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[15][x - 1] = true;
+ next[15][x + 1] = true;
+ next[14][x] = true;
+ } else {
+ if (current[15][x] || nearbyChunkSections[3] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[3].getBlockState(x, y, 0))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[15][x] = true;
+ }
+ }
+
+ // Last block of last line
+ bits = bitStorageReader.read();
+
+ if (nextNext[15][15] = !solid[bits]) {
+ bitStorageWriter.skip();
+ next[15][14] = true;
+ next[14][15] = true;
+ } else {
+ if (current[15][15] || nearbyChunkSections[3] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[3].getBlockState(15, y, 0))] || nearbyChunkSections[1] == LevelChunk.EMPTY_SECTION || !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(nearbyChunkSections[1].getBlockState(0, y, 15))]) {
+ bitStorageWriter.skip();
+ } else {
+ bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[bits]) {
+ next[15][15] = true;
+ }
+ }
+
+ private boolean[] readPalette(Palette<BlockState> palette, boolean[] temp, boolean[] global) {
+ if (palette == LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE) {
+ return global;
+ }
+
+ BlockState blockState;
+
+ for (int i = 0; (blockState = palette.valueFor(i)) != null; i++) {
+ temp[i] = global[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(blockState)];
+ }
+
+ return temp;
+ }
+
+ @Override
+ public void onBlockChange(Level level, BlockPos blockPos, BlockState newBlockState, BlockState oldBlockState, int flags, int maxUpdateDepth) {
+ if (oldBlockState != null && solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(oldBlockState)] && !solidGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(newBlockState)] && blockPos.getY() <= maxBlockHeightUpdatePosition) {
+ updateNearbyBlocks(level, blockPos);
+ }
+ }
+
+ @Override
+ public void onPlayerLeftClickBlock(ServerPlayerGameMode serverPlayerGameMode, BlockPos blockPos, ServerboundPlayerActionPacket.Action action, Direction direction, int worldHeight) {
+ if (blockPos.getY() <= maxBlockHeightUpdatePosition) {
+ updateNearbyBlocks(serverPlayerGameMode.level, blockPos);
+ }
+ }
+
+ private void updateNearbyBlocks(Level level, BlockPos blockPos) {
+ if (updateRadius >= 2) {
+ BlockPos temp = blockPos.west();
+ updateBlock(level, temp);
+ updateBlock(level, temp.west());
+ updateBlock(level, temp.below());
+ updateBlock(level, temp.above());
+ updateBlock(level, temp.north());
+ updateBlock(level, temp.south());
+ updateBlock(level, temp = blockPos.east());
+ updateBlock(level, temp.east());
+ updateBlock(level, temp.below());
+ updateBlock(level, temp.above());
+ updateBlock(level, temp.north());
+ updateBlock(level, temp.south());
+ updateBlock(level, temp = blockPos.below());
+ updateBlock(level, temp.below());
+ updateBlock(level, temp.north());
+ updateBlock(level, temp.south());
+ updateBlock(level, temp = blockPos.above());
+ updateBlock(level, temp.above());
+ updateBlock(level, temp.north());
+ updateBlock(level, temp.south());
+ updateBlock(level, temp = blockPos.north());
+ updateBlock(level, temp.north());
+ updateBlock(level, temp = blockPos.south());
+ updateBlock(level, temp.south());
+ } else if (updateRadius == 1) {
+ updateBlock(level, blockPos.west());
+ updateBlock(level, blockPos.east());
+ updateBlock(level, blockPos.below());
+ updateBlock(level, blockPos.above());
+ updateBlock(level, blockPos.north());
+ updateBlock(level, blockPos.south());
+ } else {
+ // Do nothing if updateRadius <= 0 (test mode)
+ }
+ }
+
+ private void updateBlock(Level level, BlockPos blockPos) {
+ BlockState blockState = level.getTypeIfLoaded(blockPos);
+
+ if (blockState != null && obfuscateGlobal[LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE.idFor(blockState)]) {
+ ((ServerLevel) level).getChunkSource().blockChanged(blockPos);
+ }
+ }
+
+ public enum EngineMode {
+
+ HIDE(1, "hide ores"),
+ OBFUSCATE(2, "obfuscate");
+
+ private final int id;
+ private final String description;
+
+ EngineMode(int id, String description) {
+ this.id = id;
+ this.description = description;
+ }
+
+ public static EngineMode getById(int id) {
+ for (EngineMode engineMode : values()) {
+ if (engineMode.id == id) {
+ return engineMode;
+ }
+ }
+
+ return null;
+ }
+
+ public int getId() {
+ return id;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java
new file mode 100644
index 0000000000000000000000000000000000000000..7bc2d4daffa8e9e71c3bf496d2cf1a2b7f3c6a4b
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java
@@ -0,0 +1,80 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.network.protocol.game.ClientboundLevelChunkPacket;
+import net.minecraft.world.level.chunk.LevelChunk;
+import net.minecraft.world.level.chunk.Palette;
+
+public class ChunkPacketInfo<T> {
+
+ private final ClientboundLevelChunkPacket chunkPacket;
+ private final LevelChunk chunk;
+ private final int[] bits;
+ private final Object[] palettes;
+ private final int[] indexes;
+ private final Object[][] presetValues;
+ private byte[] buffer;
+
+ public ChunkPacketInfo(ClientboundLevelChunkPacket chunkPacket, LevelChunk chunk) {
+ this.chunkPacket = chunkPacket;
+ this.chunk = chunk;
+ int sections = chunk.getSectionsCount();
+ bits = new int[sections];
+ palettes = new Object[sections];
+ indexes = new int[sections];
+ presetValues = new Object[sections][];
+ }
+
+ public ClientboundLevelChunkPacket getChunkPacket() {
+ return chunkPacket;
+ }
+
+ public LevelChunk getChunk() {
+ return chunk;
+ }
+
+ public byte[] getBuffer() {
+ return buffer;
+ }
+
+ public void setBuffer(byte[] buffer) {
+ this.buffer = buffer;
+ }
+
+ public int getBits(int chunkSectionIndex) {
+ return bits[chunkSectionIndex];
+ }
+
+ public void setBits(int chunkSectionIndex, int bits) {
+ this.bits[chunkSectionIndex] = bits;
+ }
+
+ @SuppressWarnings("unchecked")
+ public Palette<T> getPalette(int chunkSectionIndex) {
+ return (Palette<T>) palettes[chunkSectionIndex];
+ }
+
+ public void setPalette(int chunkSectionIndex, Palette<T> palette) {
+ palettes[chunkSectionIndex] = palette;
+ }
+
+ public int getIndex(int chunkSectionIndex) {
+ return indexes[chunkSectionIndex];
+ }
+
+ public void setIndex(int chunkSectionIndex, int index) {
+ indexes[chunkSectionIndex] = index;
+ }
+
+ @SuppressWarnings("unchecked")
+ public T[] getPresetValues(int chunkSectionIndex) {
+ return (T[]) presetValues[chunkSectionIndex];
+ }
+
+ public void setPresetValues(int chunkSectionIndex, T[] presetValues) {
+ this.presetValues[chunkSectionIndex] = presetValues;
+ }
+
+ public boolean isWritten(int chunkSectionIndex) {
+ return bits[chunkSectionIndex] != 0;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java
new file mode 100644
index 0000000000000000000000000000000000000000..02324a59ac21db5349fe2a74248b2c6f92fa8233
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java
@@ -0,0 +1,29 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.network.protocol.game.ClientboundLevelChunkPacket;
+import net.minecraft.world.level.block.state.BlockState;
+import net.minecraft.world.level.chunk.LevelChunk;
+
+public final class ChunkPacketInfoAntiXray extends ChunkPacketInfo<BlockState> implements Runnable {
+
+ private final ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray;
+ private LevelChunk[] nearbyChunks;
+
+ public ChunkPacketInfoAntiXray(ClientboundLevelChunkPacket chunkPacket, LevelChunk chunk, ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray) {
+ super(chunkPacket, chunk);
+ this.chunkPacketBlockControllerAntiXray = chunkPacketBlockControllerAntiXray;
+ }
+
+ public LevelChunk[] getNearbyChunks() {
+ return nearbyChunks;
+ }
+
+ public void setNearbyChunks(LevelChunk... nearbyChunks) {
+ this.nearbyChunks = nearbyChunks;
+ }
+
+ @Override
+ public void run() {
+ chunkPacketBlockControllerAntiXray.obfuscate(this);
+ }
+}
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java
index c28879f32b004f36ff746ea2274f91ddd9501e71..60d72e488bc77cd913328be400ca374a873b4561 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java
@@ -37,7 +37,24 @@ public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListe
}
// Paper end
- public ClientboundLevelChunkPacket(LevelChunk chunk) {
+ // Paper start - Async-Anti-Xray - Ready flag for the connection
+ private volatile boolean ready;
+
+ @Override
+ public boolean isReady() {
+ return this.ready;
+ }
+
+ public void setReady(boolean ready) {
+ this.ready = ready;
+ }
+ // Paper end
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public ClientboundLevelChunkPacket(LevelChunk chunk) { this(chunk, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ClientboundLevelChunkPacket(LevelChunk chunk, boolean modifyBlocks) {
+ com.destroystokyo.paper.antixray.ChunkPacketInfo<net.minecraft.world.level.block.state.BlockState> chunkPacketInfo = modifyBlocks ? chunk.level.chunkPacketBlockController.getChunkPacketInfo(this, chunk) : null;
+ // Paper end
ChunkPos chunkPos = chunk.getPos();
this.x = chunkPos.x;
this.z = chunkPos.z;
@@ -51,7 +68,14 @@ public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListe
this.biomes = chunk.getBiomes().writeBiomes();
this.buffer = new byte[this.calculateChunkSize(chunk)];
- this.availableSections = this.extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk);
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ if (chunkPacketInfo != null) {
+ chunkPacketInfo.setBuffer(this.buffer);
+ }
+
+ this.availableSections = this.extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk, chunkPacketInfo);
+ // Paper end
this.blockEntitiesTags = Lists.newArrayList();
int totalTileEntities = 0; // Paper
@@ -71,6 +95,7 @@ public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListe
this.blockEntitiesTags.add(compoundTag);
}
+ chunk.level.chunkPacketBlockController.modifyBlocks(this, chunkPacketInfo); // Paper - Anti-Xray - Modify blocks
}
public ClientboundLevelChunkPacket(FriendlyByteBuf buf) {
@@ -120,7 +145,10 @@ public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListe
return byteBuf;
}
- public BitSet extractChunkData(FriendlyByteBuf buf, LevelChunk chunk) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public BitSet extractChunkData(FriendlyByteBuf buf, LevelChunk chunk) { return extractChunkData(buf, chunk, null); } // Notice for updates: Please make sure this method isn't used anywhere
+ public BitSet extractChunkData(FriendlyByteBuf buf, LevelChunk chunk, com.destroystokyo.paper.antixray.ChunkPacketInfo<net.minecraft.world.level.block.state.BlockState> chunkPacketInfo) {
+ // Paper end
BitSet bitSet = new BitSet();
LevelChunkSection[] levelChunkSections = chunk.getSections();
int i = 0;
@@ -129,7 +157,7 @@ public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListe
LevelChunkSection levelChunkSection = levelChunkSections[i];
if (levelChunkSection != LevelChunk.EMPTY_SECTION && !levelChunkSection.isEmpty()) {
bitSet.set(i);
- levelChunkSection.write(buf);
+ levelChunkSection.write(buf, chunkPacketInfo); // Paper - Anti-Xray - Add chunk packet info
}
}
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 1197c510211b725742d48152443178eea94058a8..5bbdf56179d2e5fd0b42c37c84c9d4bc5faaee24 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -1534,7 +1534,7 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
public void playerLoadedChunk(ServerPlayer player, Packet<?>[] packets, LevelChunk chunk) {
if (packets[0] == null) {
- packets[0] = new ClientboundLevelChunkPacket(chunk);
+ packets[0] = new ClientboundLevelChunkPacket(chunk, chunk.level.chunkPacketBlockController.shouldModify(player, chunk)); // Paper - Ani-Xray - Bypass
packets[1] = new ClientboundLightUpdatePacket(chunk.getPos(), this.lightEngine, (BitSet) null, (BitSet) null, true);
}
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 085d807881e92149c3b31b6f76b2a5539ee629fa..1b342701b410a508323286944508e7faa175ab43 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -378,7 +378,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
// Add env and gen to constructor, WorldData -> WorldDataServer
public ServerLevel(MinecraftServer minecraftserver, Executor executor, LevelStorageSource.LevelStorageAccess convertable_conversionsession, ServerLevelData iworlddataserver, ResourceKey<Level> resourcekey, DimensionType dimensionmanager, ChunkProgressListener worldloadlistener, ChunkGenerator chunkgenerator, boolean flag, long i, List<CustomSpawner> list, boolean flag1, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider) {
// Objects.requireNonNull(minecraftserver); // CraftBukkit - decompile error
- super(iworlddataserver, resourcekey, dimensionmanager, minecraftserver::getProfiler, false, flag, i, gen, biomeProvider, env);
+ super(iworlddataserver, resourcekey, dimensionmanager, minecraftserver::getProfiler, false, flag, i, gen, biomeProvider, env, executor); // Paper - Anti-Xray - Pass executor
this.pvpMode = minecraftserver.isPvpAllowed();
this.convertable = convertable_conversionsession;
this.uuid = WorldUUID.getUUID(convertable_conversionsession.levelPath.toFile());
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 6219634a57976a6a0a9b32ed08d56107d6b5d1c3..31e3534d6e15f91d781fabb0670e53ef66cb8977 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -49,7 +49,7 @@ import org.bukkit.event.player.PlayerInteractEvent;
public class ServerPlayerGameMode {
private static final Logger LOGGER = LogManager.getLogger();
- protected ServerLevel level;
+ public ServerLevel level; // Paper - Anti-Xray - protected -> public
protected final ServerPlayer player;
private GameType gameModeForPlayer;
@Nullable
@@ -315,6 +315,8 @@ public class ServerPlayerGameMode {
}
}
+
+ this.level.chunkPacketBlockController.onPlayerLeftClickBlock(this, pos, action, direction, worldHeight); // Paper - Anti-Xray
}
public void destroyAndAck(BlockPos pos, ServerboundPlayerActionPacket.Action action, String reason) {
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index a8772b168eedca4933b4b4132ea81afd6bcaafa2..35209090439d5ab3bf5c37de28a39e60d482b64c 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -166,6 +166,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
public final org.spigotmc.SpigotWorldConfig spigotConfig; // Spigot
public final com.destroystokyo.paper.PaperWorldConfig paperConfig; // Paper
+ public final com.destroystokyo.paper.antixray.ChunkPacketBlockController chunkPacketBlockController; // Paper - Anti-Xray
public final co.aikar.timings.WorldTimingsHandler timings; // Paper
public static BlockPos lastPhysicsProblem; // Spigot
@@ -187,7 +188,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
return this.typeKey;
}
- protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, final DimensionType dimensionmanager, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env) {
+ protected Level(WritableLevelData worlddatamutable, ResourceKey<Level> resourcekey, final DimensionType dimensionmanager, Supplier<ProfilerFiller> supplier, boolean flag, boolean flag1, long i, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.concurrent.Executor executor) { // Paper - Anti-Xray - Pass executor
this.spigotConfig = new org.spigotmc.SpigotWorldConfig(((net.minecraft.world.level.storage.PrimaryLevelData) worlddatamutable).getLevelName()); // Spigot
this.paperConfig = new com.destroystokyo.paper.PaperWorldConfig(((net.minecraft.world.level.storage.PrimaryLevelData) worlddatamutable).getLevelName(), this.spigotConfig); // Paper
this.generator = gen;
@@ -261,6 +262,9 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
this.keepSpawnInMemory = this.paperConfig.keepSpawnInMemory; // Paper
this.entityLimiter = new org.spigotmc.TickLimiter(spigotConfig.entityMaxTickTime);
this.tileLimiter = new org.spigotmc.TickLimiter(spigotConfig.tileMaxTickTime);
+ this.chunkPacketBlockController = this.paperConfig.antiXray ?
+ new com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray(this, executor)
+ : com.destroystokyo.paper.antixray.ChunkPacketBlockController.NO_OPERATION_INSTANCE; // Paper - Anti-Xray
}
// Paper start
@@ -440,6 +444,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
// CraftBukkit end
BlockState iblockdata1 = chunk.setType(pos, state, (flags & 64) != 0, (flags & 1024) == 0); // CraftBukkit custom NO_PLACE flag
+ this.chunkPacketBlockController.onBlockChange(this, pos, state, iblockdata1, flags, maxUpdateDepth); // Paper - Anti-Xray
if (iblockdata1 == null) {
// CraftBukkit start - remove blockstate if failed (or the same)
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
index 149ac5ec368b53a9a5e9208bd49a3c9453625d9c..12d11a249c759e99568a76c791cc0d65adfcfe94 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
@@ -74,7 +74,7 @@ public interface ChunkAccess extends BlockGetter, FeatureAccess {
default LevelChunkSection getOrCreateSection(int yIndex) {
LevelChunkSection[] levelChunkSections = this.getSections();
if (levelChunkSections[yIndex] == LevelChunk.EMPTY_SECTION) {
- levelChunkSections[yIndex] = new LevelChunkSection(this.getSectionYFromSectionIndex(yIndex));
+ levelChunkSections[yIndex] = new LevelChunkSection(this.getSectionYFromSectionIndex(yIndex), this, this.getLevel(), true); // Paper - Anti-Xray - Add parameters
}
return levelChunkSections[yIndex];
diff --git a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
index 69c2454533e6f21c70792b555ec02c6bc6d169b3..f9e0e109497d685a9d88d2fa8892287b9fa97443 100644
--- a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
@@ -86,7 +86,7 @@ public class EmptyLevelChunk extends LevelChunk {
private static final Biome[] EMPTY_BIOMES = new Biome[0];
public EmptyChunkBiomeContainer(Level world) {
- super(world.registryAccess().registryOrThrow(Registry.BIOME_REGISTRY), world, EMPTY_BIOMES);
+ super(net.minecraft.server.MinecraftServer.getServer().registryAccess().registryOrThrow(Registry.BIOME_REGISTRY), world, EMPTY_BIOMES); // Paper - Anti-Xray - The world isnt ready yet, use server singleton for registry
}
@Override
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
index 8141935e2ee58bbb58c6b5cfdef5a9a88d7658ec..515e28eea8cbab261320352ee0db9b877807f3ed 100644
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
@@ -456,7 +456,7 @@ public class LevelChunk implements ChunkAccess {
return null;
}
- chunksection = new LevelChunkSection(SectionPos.blockToSectionCoord(i));
+ chunksection = new LevelChunkSection(SectionPos.blockToSectionCoord(i), this, this.level, true); // Paper - Anti-Xray - Add parameters
this.sections[j] = chunksection;
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
index 5fd66020a937b641e2a060cf38df731a43f3bf55..c9fefeef19bd46ade51b23eadb5eef3a88024ea1 100644
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
@@ -20,16 +20,25 @@ public class LevelChunkSection {
private short tickingFluidCount;
final PalettedContainer<BlockState> states; // Paper - package-private
- public LevelChunkSection(int yOffset) {
- this(yOffset, (short)0, (short)0, (short)0);
+ // Paper start - Anti-Xray - Add parameters
+ @Deprecated public LevelChunkSection(int yOffset) { this(yOffset, null, null, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public LevelChunkSection(int yOffset, ChunkAccess chunk, net.minecraft.world.level.Level level, boolean initializeBlocks) {
+ this(yOffset, (short) 0, (short) 0, (short) 0, chunk, level, initializeBlocks);
+ // Paper end
}
- public LevelChunkSection(int yOffset, short nonEmptyBlockCount, short randomTickableBlockCount, short nonEmptyFluidCount) {
+ // Paper start - Anti-Xray - Add parameters
+ @Deprecated public LevelChunkSection(int yOffset, short nonEmptyBlockCount, short randomTickableBlockCount, short nonEmptyFluidCount) { // Notice for updates: Please make sure this constructor isn't used anywhere
+ this(yOffset, nonEmptyBlockCount, randomTickableBlockCount, nonEmptyFluidCount, null, null, true);
+ }
+ public LevelChunkSection(int yOffset, short nonEmptyBlockCount, short randomTickableBlockCount, short nonEmptyFluidCount, ChunkAccess chunk, net.minecraft.world.level.Level level, boolean initializeBlocks) {
+ // Paper end
this.bottomBlockY = getBottomBlockY(yOffset);
this.nonEmptyBlockCount = nonEmptyBlockCount;
this.tickingBlockCount = randomTickableBlockCount;
this.tickingFluidCount = nonEmptyFluidCount;
- this.states = new PalettedContainer<>(GLOBAL_BLOCKSTATE_PALETTE, Block.BLOCK_STATE_REGISTRY, NbtUtils::readBlockState, NbtUtils::writeBlockState, Blocks.AIR.defaultBlockState());
+ this.states = new PalettedContainer<>(GLOBAL_BLOCKSTATE_PALETTE, Block.BLOCK_STATE_REGISTRY, NbtUtils::readBlockState, NbtUtils::writeBlockState, Blocks.AIR.defaultBlockState(),
+ level == null ? null : level.chunkPacketBlockController.getPresetBlockStates(level, chunk, this, initializeBlocks), initializeBlocks); // Paper - Anti-Xray - Add preset block states
}
public static int getBottomBlockY(int chunkPos) {
@@ -147,9 +156,12 @@ public class LevelChunkSection {
this.states.read(buf);
}
- public void write(FriendlyByteBuf buf) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public void write(FriendlyByteBuf buf) { write(buf, null); } // Notice for updates: Please make sure this method isn't used anywhere
+ public void write(FriendlyByteBuf buf, com.destroystokyo.paper.antixray.ChunkPacketInfo<BlockState> chunkPacketInfo) {
+ // Paper end
buf.writeShort(this.nonEmptyBlockCount);
- this.states.write(buf);
+ this.states.write(buf, chunkPacketInfo, this.bottomBlockY); // Paper - Anti-Xray - Add chunk packet info
}
public int getSerializedSize() {
diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
index bb8fd88aebb550edec8c679622a02a595cbc6694..ac51089aae57a5f1d2411367ff177e058702894c 100644
--- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
+++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
@@ -28,6 +28,7 @@ public class PalettedContainer<T> implements PaletteResize<T> {
private final Function<CompoundTag, T> reader;
private final Function<T, CompoundTag> writer;
private final T defaultValue;
+ private final T[] presetValues; // Paper - Anti-Xray - Add preset values
protected BitStorage storage;
private Palette<T> palette;
private int bits;
@@ -48,14 +49,46 @@ public class PalettedContainer<T> implements PaletteResize<T> {
this.lock.release();
}
- public PalettedContainer(Palette<T> fallbackPalette, IdMapper<T> idList, Function<CompoundTag, T> elementDeserializer, Function<T, CompoundTag> elementSerializer, T defaultElement) {
+ // Paper start - Anti-Xray - Add preset values
+ @Deprecated public PalettedContainer(Palette<T> fallbackPalette, IdMapper<T> idList, Function<CompoundTag, T> elementDeserializer, Function<T, CompoundTag> elementSerializer, T defaultElement) { // Notice for updates: Please make sure this constructor isn't used anywhere
+ this(fallbackPalette, idList, elementDeserializer, elementSerializer, defaultElement, null, true);
+ }
+ public PalettedContainer(Palette<T> fallbackPalette, IdMapper<T> idList, Function<CompoundTag, T> elementDeserializer, Function<T, CompoundTag> elementSerializer, T defaultElement, T[] presetValues, boolean initialize) {
+ // Paper end
this.globalPalette = fallbackPalette;
this.registry = idList;
this.reader = elementDeserializer;
this.writer = elementSerializer;
this.defaultValue = defaultElement;
- this.setBits(4);
+ // Paper start - Anti-Xray - Add preset values
+ this.presetValues = presetValues;
+
+ if (initialize) {
+ if (presetValues == null) {
+ // Default
+ this.setBits(4);
+ } else {
+ // Count the number of required bits
+ // Preset values: presetValues.length - 1
+ // Air: + 1
+ // Extra: + 15
+ // Air and extra correspond to the default behavior this.setBits(4)
+ this.setBits(32 - Integer.numberOfLeadingZeros(presetValues.length + 15));
+ this.addPresetValues();
+ }
+ }
+ // Paper end
+ }
+
+ // Paper start - Anti-Xray - Add preset values
+ private void addPresetValues() {
+ if (this.presetValues != null && this.palette != this.globalPalette) {
+ for (T presetValue : this.presetValues) {
+ this.palette.idFor(presetValue);
+ }
+ }
}
+ // Paper end
private static int getIndex(int x, int y, int z) {
return y << 8 | z << 4 | x;
@@ -84,6 +117,7 @@ public class PalettedContainer<T> implements PaletteResize<T> {
BitStorage bitStorage = this.storage;
Palette<T> palette = this.palette;
this.setBits(newSize);
+ this.addPresetValues(); // Paper - Anti-Xray - Add preset values
for(int i = 0; i < bitStorage.getSize(); ++i) {
T object = palette.valueFor(bitStorage.get(i));
@@ -153,17 +187,38 @@ public class PalettedContainer<T> implements PaletteResize<T> {
this.palette.read(buf);
buf.readLongArray(this.storage.getRaw());
+ // Paper start - Anti-Xray - Add preset values
+ // If there are many preset values this may require several resize operations
+ // This can be avoided by calculating the required bits in advance, as it is done in #read(ListTag, long[])
+ // However, this method is only used by the client, so it does not matter
+ this.addPresetValues();
+ // Paper end
} finally {
this.release();
}
}
- public void write(FriendlyByteBuf buf) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public void write(FriendlyByteBuf buf) { write(buf, null, 0); } // Notice for updates: Please make sure this method isn't used anywhere
+ public void write(FriendlyByteBuf buf, com.destroystokyo.paper.antixray.ChunkPacketInfo<T> chunkPacketInfo, int bottomBlockY) {
+ // Paper end
try {
this.acquire();
buf.writeByte(this.bits);
this.palette.write(buf);
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ if (chunkPacketInfo != null) {
+ // Bottom block to 0 based chunk section index
+ int chunkSectionIndex = (bottomBlockY >> 4) - chunkPacketInfo.getChunk().getMinSection();
+ chunkPacketInfo.setBits(chunkSectionIndex, this.bits);
+ chunkPacketInfo.setPalette(chunkSectionIndex, this.palette);
+ chunkPacketInfo.setIndex(chunkSectionIndex, buf.writerIndex() + FriendlyByteBuf.getVarIntSize(this.storage.getRaw().length));
+ chunkPacketInfo.setPresetValues(chunkSectionIndex, this.presetValues);
+ }
+ // Paper end
+
buf.writeLongArray(this.storage.getRaw());
} finally {
this.release();
@@ -174,12 +229,14 @@ public class PalettedContainer<T> implements PaletteResize<T> {
public void read(ListTag paletteNbt, long[] data) {
try {
this.acquire();
- int i = Math.max(4, Mth.ceillog2(paletteNbt.size()));
- if (i != this.bits) {
+ // Paper - Anti-Xray - TODO: Should this.presetValues.length just be added here (faster) or should the contents be compared to calculate the size (less RAM)?
+ int i = Math.max(4, Mth.ceillog2(paletteNbt.size() + (this.presetValues == null ? 0 : this.presetValues.length))); // Paper - Anti-Xray - Calculate the size with preset values
+ if (true || i != this.bits) { // Paper - Anti-Xray - Not initialized yet
this.setBits(i);
}
this.palette.read(paletteNbt);
+ this.addPresetValues(); // Paper - Anti-Xray - Add preset values
int j = data.length * 64 / 4096;
if (this.palette == this.globalPalette) {
Palette<T> palette = new HashMapPalette<>(this.registry, i, this.dummyPaletteResize, this.reader, this.writer);
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
index 670e4f65680ca36fba1c84cb334c470ea8fa9b60..79f2b3942a3ccccd8fe8719db12de458212e8659 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
@@ -134,7 +134,7 @@ public class ChunkSerializer {
byte b0 = nbttagcompound2.getByte("Y");
if (nbttagcompound2.contains("Palette", 9) && nbttagcompound2.contains("BlockStates", 12)) {
- LevelChunkSection chunksection = new LevelChunkSection(b0);
+ LevelChunkSection chunksection = new LevelChunkSection(b0, null, world, false); // Paper - Anti-Xray - Add parameters and don't initialize because it's done in the line below internally
chunksection.getStates().read(nbttagcompound2.getList("Palette", 10), nbttagcompound2.getLongArray("BlockStates"));
chunksection.recalcBlockCounts();
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
index 7467de2da7cbe79df49d9bd95df1891810a1431b..46136c5daa1b4ea9103c736cc4b035195177368e 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
@@ -51,7 +51,7 @@ public class CraftChunk implements Chunk {
private final ServerLevel worldServer;
private final int x;
private final int z;
- private static final PalettedContainer<net.minecraft.world.level.block.state.BlockState> emptyBlockIDs = new LevelChunkSection(0).getStates();
+ private static final PalettedContainer<net.minecraft.world.level.block.state.BlockState> emptyBlockIDs = new LevelChunkSection(0, null, null, true).getStates(); // Paper - Anti-Xray - Add parameters
private static final byte[] emptyLight = new byte[2048];
public CraftChunk(net.minecraft.world.level.chunk.LevelChunk chunk) {
@@ -332,7 +332,7 @@ public class CraftChunk implements Chunk {
CompoundTag data = new CompoundTag();
cs[i].getStates().write(data, "Palette", "BlockStates");
- PalettedContainer blockids = new PalettedContainer<>(LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE, net.minecraft.world.level.block.Block.BLOCK_STATE_REGISTRY, NbtUtils::readBlockState, NbtUtils::writeBlockState, Blocks.AIR.defaultBlockState()); // TODO: snapshot whole ChunkSection
+ PalettedContainer blockids = new PalettedContainer<>(LevelChunkSection.GLOBAL_BLOCKSTATE_PALETTE, net.minecraft.world.level.block.Block.BLOCK_STATE_REGISTRY, NbtUtils::readBlockState, NbtUtils::writeBlockState, Blocks.AIR.defaultBlockState(), null, false); // TODO: snapshot whole ChunkSection // Paper - Anti-Xray - Add no preset block states and don't initialize because it's done in the line below internally
blockids.read(data.getList("Palette", CraftMagicNumbers.NBT.TAG_COMPOUND), data.getLongArray("BlockStates"));
sectionBlockIDs[i] = blockids;
diff --git a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
index 7bfd803d11976dba9ace79edc76bb083a2eccf38..a48c659c02c6c33a8efdac6daf9c9a0708f05071 100644
--- a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
+++ b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java
@@ -25,9 +25,11 @@ public final class OldCraftChunkData implements ChunkGenerator.ChunkData {
private final LevelChunkSection[] sections;
private Set<BlockPos> tiles;
private final Set<BlockPos> lights = new HashSet<>();
+ private World world; // Paper - Anti-Xray - Add parameters
public OldCraftChunkData(World world) {
this(world.getMinHeight(), world.getMaxHeight());
+ this.world = world; // Paper - Anti-Xray - Add parameters
}
/* pp for tests */ OldCraftChunkData(int minHeight, int maxHeight) {
@@ -177,7 +179,7 @@ public final class OldCraftChunkData implements ChunkGenerator.ChunkData {
int offset = (y - this.minHeight) >> 4;
LevelChunkSection section = this.sections[offset];
if (create && section == null) {
- this.sections[offset] = section = new LevelChunkSection(offset + (this.minHeight >> 4));
+ this.sections[offset] = section = new LevelChunkSection(offset + (this.minHeight >> 4), null, world instanceof org.bukkit.craftbukkit.CraftWorld ? ((org.bukkit.craftbukkit.CraftWorld) this.world).getHandle() : null, true); // Paper - Anti-Xray - Add parameters
}
return section;
}
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