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Paper/Spigot-Server-Patches/0363-Anti-Xray.patch
Jake Potrebic fdf2a59d59
Updated Upstream (Bukkit/CraftBukkit) (#5549) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
80ece5de Remove old draft API tags
8523fa23 #604: Add Contract annotation to ConfigurationSection
dd8edaa7 #603: Specify what velocity changes in javadocs

CraftBukkit Changes:
0d86921e SPIGOT-6435: send correcting "PacketPlayOutBlockChange" packet on interact for bisected items
2021-04-27 16:51:42 +01:00

1568 Zeilen
82 KiB
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Originalformat Blame Verlauf

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 1278d09f70c1e97607ef20d87a178dc252c7f723..c45493e88bf7e8811be2759ff9ac19e3fe9d938a 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -1,7 +1,9 @@
package com.destroystokyo.paper;
+import java.util.Arrays;
import java.util.List;
+import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.EngineMode;
import org.bukkit.Bukkit;
import org.bukkit.configuration.file.YamlConfiguration;
import org.spigotmc.SpigotWorldConfig;
@@ -461,4 +463,38 @@ public class PaperWorldConfig {
private void maxAutoSaveChunksPerTick() {
maxAutoSaveChunksPerTick = getInt("max-auto-save-chunks-per-tick", 24);
}
+
+ public boolean antiXray;
+ public EngineMode engineMode;
+ public int maxChunkSectionIndex;
+ 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;
+ maxChunkSectionIndex = getInt("anti-xray.max-chunk-section-index", 3);
+ maxChunkSectionIndex = maxChunkSectionIndex > 15 ? 15 : maxChunkSectionIndex;
+ 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("gold_ore", "iron_ore", "coal_ore", "lapis_ore", "mossy_cobblestone", "obsidian", "chest", "diamond_ore", "redstone_ore", "clay", "emerald_ore", "ender_chest"));
+ replacementBlocks = getList("anti-xray.replacement-blocks", Arrays.asList("stone", "oak_planks"));
+ 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 " + ((maxChunkSectionIndex + 1) * 16) + " 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/ChunkPacketBlockController.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java
new file mode 100644
index 0000000000000000000000000000000000000000..83a023ae018cbb79b5f151b1c7a5c8ba0c3bf1bf
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java
@@ -0,0 +1,45 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.core.BlockPosition;
+import net.minecraft.core.EnumDirection;
+import net.minecraft.network.protocol.game.PacketPlayOutMapChunk;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.server.level.PlayerInteractManager;
+import net.minecraft.world.level.World;
+import net.minecraft.world.level.block.state.IBlockData;
+import net.minecraft.world.level.chunk.Chunk;
+import net.minecraft.world.level.chunk.ChunkSection;
+import net.minecraft.world.level.chunk.IChunkAccess;
+
+public class ChunkPacketBlockController {
+
+ public static final ChunkPacketBlockController NO_OPERATION_INSTANCE = new ChunkPacketBlockController();
+
+ protected ChunkPacketBlockController() {
+
+ }
+
+ public IBlockData[] getPredefinedBlockData(World world, IChunkAccess chunk, ChunkSection chunkSection, boolean initializeBlocks) {
+ return null;
+ }
+
+ public boolean shouldModify(EntityPlayer entityPlayer, Chunk chunk, int chunkSectionSelector) {
+ return false;
+ }
+
+ public ChunkPacketInfo<IBlockData> getChunkPacketInfo(PacketPlayOutMapChunk packetPlayOutMapChunk, Chunk chunk, int chunkSectionSelector) {
+ return null;
+ }
+
+ public void modifyBlocks(PacketPlayOutMapChunk packetPlayOutMapChunk, ChunkPacketInfo<IBlockData> chunkPacketInfo) {
+ packetPlayOutMapChunk.setReady(true);
+ }
+
+ public void onBlockChange(World world, BlockPosition blockPosition, IBlockData newBlockData, IBlockData oldBlockData, int flag) {
+
+ }
+
+ public void onPlayerLeftClickBlock(PlayerInteractManager playerInteractManager, BlockPosition blockPosition, EnumDirection enumDirection) {
+
+ }
+}
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..cd3b5b62d470ab6753b44f9b13dcf5522e4cbd15
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java
@@ -0,0 +1,650 @@
+package com.destroystokyo.paper.antixray;
+
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ThreadLocalRandom;
+import java.util.function.IntSupplier;
+
+import net.minecraft.core.BlockPosition;
+import net.minecraft.core.EnumDirection;
+import net.minecraft.core.IRegistry;
+import net.minecraft.network.protocol.game.PacketPlayOutMapChunk;
+import net.minecraft.resources.MinecraftKey;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.server.level.PlayerInteractManager;
+import net.minecraft.server.level.WorldServer;
+import net.minecraft.world.level.ChunkCoordIntPair;
+import net.minecraft.world.level.World;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.Blocks;
+import net.minecraft.world.level.block.state.IBlockData;
+import net.minecraft.world.level.chunk.Chunk;
+import net.minecraft.world.level.chunk.ChunkEmpty;
+import net.minecraft.world.level.chunk.ChunkSection;
+import net.minecraft.world.level.chunk.DataPalette;
+import net.minecraft.world.level.chunk.IChunkAccess;
+import org.bukkit.Bukkit;
+import org.bukkit.World.Environment;
+
+import com.destroystokyo.paper.PaperWorldConfig;
+
+public final class ChunkPacketBlockControllerAntiXray extends ChunkPacketBlockController {
+
+ private final Executor executor;
+ private final EngineMode engineMode;
+ private final int maxChunkSectionIndex;
+ private final int updateRadius;
+ private final boolean usePermission;
+ private final IBlockData[] predefinedBlockData;
+ private final IBlockData[] predefinedBlockDataFull;
+ private final IBlockData[] predefinedBlockDataStone;
+ private final IBlockData[] predefinedBlockDataNetherrack;
+ private final IBlockData[] predefinedBlockDataEndStone;
+ private final int[] predefinedBlockDataBitsGlobal;
+ private final int[] predefinedBlockDataBitsStoneGlobal;
+ private final int[] predefinedBlockDataBitsNetherrackGlobal;
+ private final int[] predefinedBlockDataBitsEndStoneGlobal;
+ private final boolean[] solidGlobal = new boolean[Block.REGISTRY_ID.size()];
+ private final boolean[] obfuscateGlobal = new boolean[Block.REGISTRY_ID.size()];
+ private final ChunkSection[] emptyNearbyChunkSections = {Chunk.EMPTY_CHUNK_SECTION, Chunk.EMPTY_CHUNK_SECTION, Chunk.EMPTY_CHUNK_SECTION, Chunk.EMPTY_CHUNK_SECTION};
+ private final int maxBlockYUpdatePosition;
+
+ public ChunkPacketBlockControllerAntiXray(World world, Executor executor) {
+ PaperWorldConfig paperWorldConfig = world.paperConfig;
+ engineMode = paperWorldConfig.engineMode;
+ maxChunkSectionIndex = paperWorldConfig.maxChunkSectionIndex;
+ updateRadius = paperWorldConfig.updateRadius;
+ usePermission = paperWorldConfig.usePermission;
+
+ this.executor = executor;
+
+ List<String> toObfuscate;
+
+ if (engineMode == EngineMode.HIDE) {
+ toObfuscate = paperWorldConfig.hiddenBlocks;
+ predefinedBlockData = null;
+ predefinedBlockDataFull = null;
+ predefinedBlockDataStone = new IBlockData[] {Blocks.STONE.getBlockData()};
+ predefinedBlockDataNetherrack = new IBlockData[] {Blocks.NETHERRACK.getBlockData()};
+ predefinedBlockDataEndStone = new IBlockData[] {Blocks.END_STONE.getBlockData()};
+ predefinedBlockDataBitsGlobal = null;
+ predefinedBlockDataBitsStoneGlobal = new int[] {ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(Blocks.STONE.getBlockData())};
+ predefinedBlockDataBitsNetherrackGlobal = new int[] {ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(Blocks.NETHERRACK.getBlockData())};
+ predefinedBlockDataBitsEndStoneGlobal = new int[] {ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(Blocks.END_STONE.getBlockData())};
+ } else {
+ toObfuscate = new ArrayList<>(paperWorldConfig.replacementBlocks);
+ List<IBlockData> predefinedBlockDataList = new LinkedList<IBlockData>();
+
+ for (String id : paperWorldConfig.hiddenBlocks) {
+ Block block = IRegistry.BLOCK.getOptional(new MinecraftKey(id)).orElse(null);
+
+ if (block != null && !block.isTileEntity()) {
+ toObfuscate.add(id);
+ predefinedBlockDataList.add(block.getBlockData());
+ }
+ }
+
+ // The doc of the LinkedHashSet(Collection<? extends E> c) constructor doesn't specify that the insertion order is the predictable iteration order of the specified Collection, although it is in the implementation
+ Set<IBlockData> predefinedBlockDataSet = new LinkedHashSet<IBlockData>();
+ // Therefore addAll(Collection<? extends E> c) is used, which guarantees this order in the doc
+ predefinedBlockDataSet.addAll(predefinedBlockDataList);
+ predefinedBlockData = predefinedBlockDataSet.size() == 0 ? new IBlockData[] {Blocks.DIAMOND_ORE.getBlockData()} : predefinedBlockDataSet.toArray(new IBlockData[0]);
+ predefinedBlockDataFull = predefinedBlockDataSet.size() == 0 ? new IBlockData[] {Blocks.DIAMOND_ORE.getBlockData()} : predefinedBlockDataList.toArray(new IBlockData[0]);
+ predefinedBlockDataStone = null;
+ predefinedBlockDataNetherrack = null;
+ predefinedBlockDataEndStone = null;
+ predefinedBlockDataBitsGlobal = new int[predefinedBlockDataFull.length];
+
+ for (int i = 0; i < predefinedBlockDataFull.length; i++) {
+ predefinedBlockDataBitsGlobal[i] = ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(predefinedBlockDataFull[i]);
+ }
+
+ predefinedBlockDataBitsStoneGlobal = null;
+ predefinedBlockDataBitsNetherrackGlobal = null;
+ predefinedBlockDataBitsEndStoneGlobal = null;
+ }
+
+ for (String id : toObfuscate) {
+ Block block = IRegistry.BLOCK.getOptional(new MinecraftKey(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.getBlockData().isAir()) {
+ // Replace all block states of a specified block
+ // No OBFHELPER for nms.BlockStateList#a() due to too many decompile errors
+ // The OBFHELPER should be getBlockDataList()
+ for (IBlockData blockData : block.getStates().a()) {
+ obfuscateGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(blockData)] = true;
+ }
+ }
+ }
+
+ ChunkEmpty emptyChunk = new ChunkEmpty(world, new ChunkCoordIntPair(0, 0));
+ BlockPosition zeroPos = new BlockPosition(0, 0, 0);
+
+ for (int i = 0; i < solidGlobal.length; i++) {
+ IBlockData blockData = ChunkSection.GLOBAL_PALETTE.getObject(i);
+
+ if (blockData != null) {
+ solidGlobal[i] = blockData.isOccluding(emptyChunk, zeroPos)
+ && blockData.getBlock() != Blocks.SPAWNER && blockData.getBlock() != Blocks.BARRIER && blockData.getBlock() != Blocks.SHULKER_BOX && blockData.getBlock() != Blocks.SLIME_BLOCK || paperWorldConfig.lavaObscures && blockData == Blocks.LAVA.getBlockData();
+ // Comparing blockData == Blocks.LAVA.getBlockData() instead of blockData.getBlock() == Blocks.LAVA ensures that only "stationary lava" is used
+ // shulker box checks TE.
+ }
+ }
+
+ this.maxBlockYUpdatePosition = (maxChunkSectionIndex + 1) * 16 + updateRadius - 1;
+ }
+
+ private int getPredefinedBlockDataFullLength() {
+ return engineMode == EngineMode.HIDE ? 1 : predefinedBlockDataFull.length;
+ }
+
+ @Override
+ public IBlockData[] getPredefinedBlockData(World world, IChunkAccess chunk, ChunkSection chunkSection, boolean initializeBlocks) {
+ // Return the block data which should be added to the data palettes so that they can be used for the obfuscation
+ if (chunkSection.getYPosition() >> 4 <= maxChunkSectionIndex) {
+ switch (engineMode) {
+ case HIDE:
+ switch (world.getWorld().getEnvironment()) {
+ case NETHER:
+ return predefinedBlockDataNetherrack;
+ case THE_END:
+ return predefinedBlockDataEndStone;
+ default:
+ return predefinedBlockDataStone;
+ }
+ default:
+ return predefinedBlockData;
+ }
+ }
+
+ return null;
+ }
+
+ @Override
+ public boolean shouldModify(EntityPlayer entityPlayer, Chunk chunk, int chunkSectionSelector) {
+ return !usePermission || !entityPlayer.getBukkitEntity().hasPermission("paper.antixray.bypass");
+ }
+
+ @Override
+ public ChunkPacketInfoAntiXray getChunkPacketInfo(PacketPlayOutMapChunk packetPlayOutMapChunk, Chunk chunk, int chunkSectionSelector) {
+ // Return a new instance to collect data and objects in the right state while creating the chunk packet for thread safe access later
+ // Note: As of 1.14 this has to be moved later due to the chunk system.
+ ChunkPacketInfoAntiXray chunkPacketInfoAntiXray = new ChunkPacketInfoAntiXray(packetPlayOutMapChunk, chunk, chunkSectionSelector, this);
+ return chunkPacketInfoAntiXray;
+ }
+
+ @Override
+ public void modifyBlocks(PacketPlayOutMapChunk packetPlayOutMapChunk, ChunkPacketInfo<IBlockData> chunkPacketInfo) {
+ if (chunkPacketInfo == null) {
+ packetPlayOutMapChunk.setReady(true);
+ return;
+ }
+
+ if (!Bukkit.isPrimaryThread()) {
+ // plugins?
+ MinecraftServer.getServer().scheduleOnMain(() -> {
+ this.modifyBlocks(packetPlayOutMapChunk, chunkPacketInfo);
+ });
+ return;
+ }
+
+ Chunk chunk = chunkPacketInfo.getChunk();
+ int x = chunk.getPos().x;
+ int z = chunk.getPos().z;
+ WorldServer world = (WorldServer)chunk.world;
+ ((ChunkPacketInfoAntiXray) chunkPacketInfo).setNearbyChunks(
+ (Chunk) world.getChunkIfLoadedImmediately(x - 1, z),
+ (Chunk) world.getChunkIfLoadedImmediately(x + 1, z),
+ (Chunk) world.getChunkIfLoadedImmediately(x, z - 1),
+ (Chunk) world.getChunkIfLoadedImmediately(x, z + 1));
+
+ executor.execute((ChunkPacketInfoAntiXray) 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[]> predefinedBlockDataBits = ThreadLocal.withInitial(() -> new int[getPredefinedBlockDataFullLength()]);
+ private static final ThreadLocal<boolean[]> solid = ThreadLocal.withInitial(() -> new boolean[Block.REGISTRY_ID.size()]);
+ private static final ThreadLocal<boolean[]> obfuscate = ThreadLocal.withInitial(() -> new boolean[Block.REGISTRY_ID.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[] predefinedBlockDataBits = this.predefinedBlockDataBits.get();
+ boolean[] solid = this.solid.get();
+ boolean[] obfuscate = this.obfuscate.get();
+ boolean[][] current = this.current.get();
+ boolean[][] next = this.next.get();
+ boolean[][] nextNext = this.nextNext.get();
+ // dataBitsReader, dataBitsWriter and nearbyChunkSections could also be reused (with ThreadLocal if necessary) but it's not worth it
+ DataBitsReader dataBitsReader = new DataBitsReader();
+ DataBitsWriter dataBitsWriter = new DataBitsWriter();
+ ChunkSection[] nearbyChunkSections = new ChunkSection[4];
+ boolean[] solidTemp = null;
+ boolean[] obfuscateTemp = null;
+ dataBitsReader.setDataBits(chunkPacketInfoAntiXray.getData());
+ dataBitsWriter.setDataBits(chunkPacketInfoAntiXray.getData());
+ int numberOfBlocks = predefinedBlockDataBits.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.getPredefinedObjects(chunkSectionIndex) != null) {
+ int[] predefinedBlockDataBitsTemp;
+
+ if (chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex) == ChunkSection.GLOBAL_PALETTE) {
+ predefinedBlockDataBitsTemp = engineMode == EngineMode.HIDE ? chunkPacketInfoAntiXray.getChunk().world.getWorld().getEnvironment() == Environment.NETHER ? predefinedBlockDataBitsNetherrackGlobal : chunkPacketInfoAntiXray.getChunk().world.getWorld().getEnvironment() == Environment.THE_END ? predefinedBlockDataBitsEndStoneGlobal : predefinedBlockDataBitsStoneGlobal : predefinedBlockDataBitsGlobal;
+ } else {
+ // If it's this.predefinedBlockData, use this.predefinedBlockDataFull instead
+ IBlockData[] predefinedBlockDataFull = chunkPacketInfoAntiXray.getPredefinedObjects(chunkSectionIndex) == predefinedBlockData ? this.predefinedBlockDataFull : chunkPacketInfoAntiXray.getPredefinedObjects(chunkSectionIndex);
+ predefinedBlockDataBitsTemp = predefinedBlockDataBits;
+
+ for (int i = 0; i < predefinedBlockDataBitsTemp.length; i++) {
+ predefinedBlockDataBitsTemp[i] = chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex).getOrCreateIdFor(predefinedBlockDataFull[i]);
+ }
+ }
+
+ dataBitsWriter.setIndex(chunkPacketInfoAntiXray.getDataBitsIndex(chunkSectionIndex));
+
+ // Check if the chunk section below was not obfuscated
+ if (chunkSectionIndex == 0 || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex - 1) || chunkPacketInfoAntiXray.getPredefinedObjects(chunkSectionIndex - 1) == null) {
+ // If so, initialize some stuff
+ dataBitsReader.setBitsPerObject(chunkPacketInfoAntiXray.getBitsPerObject(chunkSectionIndex));
+ dataBitsReader.setIndex(chunkPacketInfoAntiXray.getDataBitsIndex(chunkSectionIndex));
+ solidTemp = readDataPalette(chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex), solid, solidGlobal);
+ obfuscateTemp = readDataPalette(chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex), obfuscate, obfuscateGlobal);
+ // Read the blocks of the upper layer of the chunk section below if it exists
+ ChunkSection belowChunkSection = null;
+ boolean skipFirstLayer = chunkSectionIndex == 0 || (belowChunkSection = chunkPacketInfoAntiXray.getChunk().getSections()[chunkSectionIndex - 1]) == Chunk.EMPTY_CHUNK_SECTION;
+
+ for (int z = 0; z < 16; z++) {
+ for (int x = 0; x < 16; x++) {
+ current[z][x] = true;
+ next[z][x] = skipFirstLayer || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(belowChunkSection.getType(x, 15, z))];
+ }
+ }
+
+ // Abuse the obfuscateLayer method to read the blocks of the first layer of the current chunk section
+ dataBitsWriter.setBitsPerObject(0);
+ obfuscateLayer(-1, dataBitsReader, dataBitsWriter, solidTemp, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, emptyNearbyChunkSections, random);
+ }
+
+ dataBitsWriter.setBitsPerObject(chunkPacketInfoAntiXray.getBitsPerObject(chunkSectionIndex));
+ nearbyChunkSections[0] = chunkPacketInfoAntiXray.getNearbyChunks()[0] == null ? Chunk.EMPTY_CHUNK_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[0].getSections()[chunkSectionIndex];
+ nearbyChunkSections[1] = chunkPacketInfoAntiXray.getNearbyChunks()[1] == null ? Chunk.EMPTY_CHUNK_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[1].getSections()[chunkSectionIndex];
+ nearbyChunkSections[2] = chunkPacketInfoAntiXray.getNearbyChunks()[2] == null ? Chunk.EMPTY_CHUNK_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[2].getSections()[chunkSectionIndex];
+ nearbyChunkSections[3] = chunkPacketInfoAntiXray.getNearbyChunks()[3] == null ? Chunk.EMPTY_CHUNK_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, dataBitsReader, dataBitsWriter, solidTemp, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
+ // Check if the chunk section above doesn't need obfuscation
+ if (chunkSectionIndex == maxChunkSectionIndex || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex + 1) || chunkPacketInfoAntiXray.getPredefinedObjects(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
+ ChunkSection aboveChunkSection;
+
+ if (chunkSectionIndex != 15 && (aboveChunkSection = chunkPacketInfoAntiXray.getChunk().getSections()[chunkSectionIndex + 1]) != Chunk.EMPTY_CHUNK_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[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(aboveChunkSection.getType(x, 0, z))]) {
+ current[z][x] = true;
+ }
+ }
+ }
+
+ // There is nothing to read anymore
+ dataBitsReader.setBitsPerObject(0);
+ solid[0] = true;
+ obfuscateLayer(15, dataBitsReader, dataBitsWriter, solid, obfuscateTemp, predefinedBlockDataBitsTemp, 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
+ dataBitsReader.setBitsPerObject(chunkPacketInfoAntiXray.getBitsPerObject(chunkSectionIndex + 1));
+ dataBitsReader.setIndex(chunkPacketInfoAntiXray.getDataBitsIndex(chunkSectionIndex + 1));
+ solidTemp = readDataPalette(chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex + 1), solid, solidGlobal);
+ obfuscateTemp = readDataPalette(chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex + 1), obfuscate, obfuscateGlobal);
+ boolean[][] temp = current;
+ current = next;
+ next = nextNext;
+ nextNext = temp;
+ obfuscateLayer(15, dataBitsReader, dataBitsWriter, solidTemp, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, nearbyChunkSections, random);
+ }
+
+ dataBitsWriter.finish();
+ }
+ }
+
+ chunkPacketInfoAntiXray.getPacketPlayOutMapChunk().setReady(true);
+ }
+
+ private void obfuscateLayer(int y, DataBitsReader dataBitsReader, DataBitsWriter dataBitsWriter, boolean[] solid, boolean[] obfuscate, int[] predefinedBlockDataBits, boolean[][] current, boolean[][] next, boolean[][] nextNext, ChunkSection[] nearbyChunkSections, IntSupplier random) {
+ // First block of first line
+ int dataBits = dataBitsReader.read();
+
+ if (nextNext[0][0] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[0][1] = true;
+ next[1][0] = true;
+ } else {
+ if (nearbyChunkSections[2] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[2].getType(0, y, 15))] || nearbyChunkSections[0] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[0].getType(15, y, 0))] || current[0][0]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[0][0] = true;
+ }
+
+ // First line
+ for (int x = 1; x < 15; x++) {
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[0][x] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[0][x - 1] = true;
+ next[0][x + 1] = true;
+ next[1][x] = true;
+ } else {
+ if (nearbyChunkSections[2] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[2].getType(x, y, 15))] || current[0][x]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[0][x] = true;
+ }
+ }
+
+ // Last block of first line
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[0][15] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[0][14] = true;
+ next[1][15] = true;
+ } else {
+ if (nearbyChunkSections[2] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[2].getType(15, y, 15))] || nearbyChunkSections[1] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[1].getType(0, y, 0))] || current[0][15]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[0][15] = true;
+ }
+
+ // All inner lines
+ for (int z = 1; z < 15; z++) {
+ // First block
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[z][0] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[z][1] = true;
+ next[z - 1][0] = true;
+ next[z + 1][0] = true;
+ } else {
+ if (nearbyChunkSections[0] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[0].getType(15, y, z))] || current[z][0]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[z][0] = true;
+ }
+
+ // All inner blocks
+ for (int x = 1; x < 15; x++) {
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[z][x] = !solid[dataBits]) {
+ dataBitsWriter.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]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[z][x] = true;
+ }
+ }
+
+ // Last block
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[z][15] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[z][14] = true;
+ next[z - 1][15] = true;
+ next[z + 1][15] = true;
+ } else {
+ if (nearbyChunkSections[1] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[1].getType(0, y, z))] || current[z][15]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[z][15] = true;
+ }
+ }
+
+ // First block of last line
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[15][0] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[15][1] = true;
+ next[14][0] = true;
+ } else {
+ if (nearbyChunkSections[3] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[3].getType(0, y, 0))] || nearbyChunkSections[0] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[0].getType(15, y, 15))] || current[15][0]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[15][0] = true;
+ }
+
+ // Last line
+ for (int x = 1; x < 15; x++) {
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[15][x] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[15][x - 1] = true;
+ next[15][x + 1] = true;
+ next[14][x] = true;
+ } else {
+ if (nearbyChunkSections[3] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[3].getType(x, y, 0))] || current[15][x]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[15][x] = true;
+ }
+ }
+
+ // Last block of last line
+ dataBits = dataBitsReader.read();
+
+ if (nextNext[15][15] = !solid[dataBits]) {
+ dataBitsWriter.skip();
+ next[15][14] = true;
+ next[14][15] = true;
+ } else {
+ if (nearbyChunkSections[3] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[3].getType(15, y, 0))] || nearbyChunkSections[1] == Chunk.EMPTY_CHUNK_SECTION || !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(nearbyChunkSections[1].getType(0, y, 15))] || current[15][15]) {
+ dataBitsWriter.skip();
+ } else {
+ dataBitsWriter.write(predefinedBlockDataBits[random.getAsInt()]);
+ }
+ }
+
+ if (!obfuscate[dataBits]) {
+ next[15][15] = true;
+ }
+ }
+
+ private boolean[] readDataPalette(DataPalette<IBlockData> dataPalette, boolean[] temp, boolean[] global) {
+ if (dataPalette == ChunkSection.GLOBAL_PALETTE) {
+ return global;
+ }
+
+ IBlockData blockData;
+
+ for (int i = 0; (blockData = dataPalette.getObject(i)) != null; i++) {
+ temp[i] = global[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(blockData)];
+ }
+
+ return temp;
+ }
+
+ @Override
+ public void onBlockChange(World world, BlockPosition blockPosition, IBlockData newBlockData, IBlockData oldBlockData, int flag) {
+ if (oldBlockData != null && solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(oldBlockData)] && !solidGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(newBlockData)] && blockPosition.getY() <= maxBlockYUpdatePosition) {
+ updateNearbyBlocks(world, blockPosition);
+ }
+ }
+
+ @Override
+ public void onPlayerLeftClickBlock(PlayerInteractManager playerInteractManager, BlockPosition blockPosition, EnumDirection enumDirection) {
+ if (blockPosition.getY() <= maxBlockYUpdatePosition) {
+ updateNearbyBlocks(playerInteractManager.world, blockPosition);
+ }
+ }
+
+ private void updateNearbyBlocks(World world, BlockPosition blockPosition) {
+ if (updateRadius >= 2) {
+ BlockPosition temp = blockPosition.west();
+ updateBlock(world, temp);
+ updateBlock(world, temp.west());
+ updateBlock(world, temp.down());
+ updateBlock(world, temp.up());
+ updateBlock(world, temp.north());
+ updateBlock(world, temp.south());
+ updateBlock(world, temp = blockPosition.east());
+ updateBlock(world, temp.east());
+ updateBlock(world, temp.down());
+ updateBlock(world, temp.up());
+ updateBlock(world, temp.north());
+ updateBlock(world, temp.south());
+ updateBlock(world, temp = blockPosition.down());
+ updateBlock(world, temp.down());
+ updateBlock(world, temp.north());
+ updateBlock(world, temp.south());
+ updateBlock(world, temp = blockPosition.up());
+ updateBlock(world, temp.up());
+ updateBlock(world, temp.north());
+ updateBlock(world, temp.south());
+ updateBlock(world, temp = blockPosition.north());
+ updateBlock(world, temp.north());
+ updateBlock(world, temp = blockPosition.south());
+ updateBlock(world, temp.south());
+ } else if (updateRadius == 1) {
+ updateBlock(world, blockPosition.west());
+ updateBlock(world, blockPosition.east());
+ updateBlock(world, blockPosition.down());
+ updateBlock(world, blockPosition.up());
+ updateBlock(world, blockPosition.north());
+ updateBlock(world, blockPosition.south());
+ } else {
+ // Do nothing if updateRadius <= 0 (test mode)
+ }
+ }
+
+ private void updateBlock(World world, BlockPosition blockPosition) {
+ IBlockData blockData = world.getTypeIfLoaded(blockPosition);
+
+ if (blockData != null && obfuscateGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(blockData)]) {
+ // world.notify(blockPosition, blockData, blockData, 3);
+ ((WorldServer)world).getChunkProvider().flagDirty(blockPosition); // We only need to re-send to client
+ }
+ }
+
+ 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..22c9adefc3e51e9e4b8d611a40d1497d2a16a8d2
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java
@@ -0,0 +1,81 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.network.protocol.game.PacketPlayOutMapChunk;
+import net.minecraft.world.level.chunk.Chunk;
+import net.minecraft.world.level.chunk.DataPalette;
+
+public class ChunkPacketInfo<T> {
+
+ private final PacketPlayOutMapChunk packetPlayOutMapChunk;
+ private final Chunk chunk;
+ private final int chunkSectionSelector;
+ private byte[] data;
+ private final int[] bitsPerObject = new int[16];
+ private final Object[] dataPalettes = new Object[16];
+ private final int[] dataBitsIndexes = new int[16];
+ private final Object[][] predefinedObjects = new Object[16][];
+
+ public ChunkPacketInfo(PacketPlayOutMapChunk packetPlayOutMapChunk, Chunk chunk, int chunkSectionSelector) {
+ this.packetPlayOutMapChunk = packetPlayOutMapChunk;
+ this.chunk = chunk;
+ this.chunkSectionSelector = chunkSectionSelector;
+ }
+
+ public PacketPlayOutMapChunk getPacketPlayOutMapChunk() {
+ return packetPlayOutMapChunk;
+ }
+
+ public Chunk getChunk() {
+ return chunk;
+ }
+
+ public int getChunkSectionSelector() {
+ return chunkSectionSelector;
+ }
+
+ public byte[] getData() {
+ return data;
+ }
+
+ public void setData(byte[] data) {
+ this.data = data;
+ }
+
+ public int getBitsPerObject(int chunkSectionIndex) {
+ return bitsPerObject[chunkSectionIndex];
+ }
+
+ public void setBitsPerObject(int chunkSectionIndex, int bitsPerObject) {
+ this.bitsPerObject[chunkSectionIndex] = bitsPerObject;
+ }
+
+ @SuppressWarnings("unchecked")
+ public DataPalette<T> getDataPalette(int chunkSectionIndex) {
+ return (DataPalette<T>) dataPalettes[chunkSectionIndex];
+ }
+
+ public void setDataPalette(int chunkSectionIndex, DataPalette<T> dataPalette) {
+ dataPalettes[chunkSectionIndex] = dataPalette;
+ }
+
+ public int getDataBitsIndex(int chunkSectionIndex) {
+ return dataBitsIndexes[chunkSectionIndex];
+ }
+
+ public void setDataBitsIndex(int chunkSectionIndex, int dataBitsIndex) {
+ dataBitsIndexes[chunkSectionIndex] = dataBitsIndex;
+ }
+
+ @SuppressWarnings("unchecked")
+ public T[] getPredefinedObjects(int chunkSectionIndex) {
+ return (T[]) predefinedObjects[chunkSectionIndex];
+ }
+
+ public void setPredefinedObjects(int chunkSectionIndex, T[] predefinedObjects) {
+ this.predefinedObjects[chunkSectionIndex] = predefinedObjects;
+ }
+
+ public boolean isWritten(int chunkSectionIndex) {
+ return bitsPerObject[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..4b64964e52b11bea4d2c0d0f64f55ad08d2189be
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java
@@ -0,0 +1,30 @@
+package com.destroystokyo.paper.antixray;
+
+import net.minecraft.network.protocol.game.PacketPlayOutMapChunk;
+import net.minecraft.world.level.block.state.IBlockData;
+import net.minecraft.world.level.chunk.Chunk;
+
+public final class ChunkPacketInfoAntiXray extends ChunkPacketInfo<IBlockData> implements Runnable {
+
+ private Chunk[] nearbyChunks;
+ private final ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray;
+
+ public ChunkPacketInfoAntiXray(PacketPlayOutMapChunk packetPlayOutMapChunk, Chunk chunk, int chunkSectionSelector,
+ ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray) {
+ super(packetPlayOutMapChunk, chunk, chunkSectionSelector);
+ this.chunkPacketBlockControllerAntiXray = chunkPacketBlockControllerAntiXray;
+ }
+
+ public Chunk[] getNearbyChunks() {
+ return nearbyChunks;
+ }
+
+ public void setNearbyChunks(Chunk... nearbyChunks) {
+ this.nearbyChunks = nearbyChunks;
+ }
+
+ @Override
+ public void run() {
+ chunkPacketBlockControllerAntiXray.obfuscate(this);
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/DataBitsReader.java b/src/main/java/com/destroystokyo/paper/antixray/DataBitsReader.java
new file mode 100644
index 0000000000000000000000000000000000000000..298ea423084dbcc1b61f991bcd82b8ae51bf0977
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/DataBitsReader.java
@@ -0,0 +1,51 @@
+package com.destroystokyo.paper.antixray;
+
+public final class DataBitsReader {
+
+ private byte[] dataBits;
+ private int bitsPerObject;
+ private int mask;
+ private int longInDataBitsIndex;
+ private int bitInLongIndex;
+ private long current;
+
+ public void setDataBits(byte[] dataBits) {
+ this.dataBits = dataBits;
+ }
+
+ public void setBitsPerObject(int bitsPerObject) {
+ this.bitsPerObject = bitsPerObject;
+ mask = (1 << bitsPerObject) - 1;
+ }
+
+ public void setIndex(int index) {
+ this.longInDataBitsIndex = index;
+ bitInLongIndex = 0;
+ init();
+ }
+
+ private void init() {
+ if (dataBits.length > longInDataBitsIndex + 7) {
+ current = ((((long) dataBits[longInDataBitsIndex]) << 56)
+ | (((long) dataBits[longInDataBitsIndex + 1] & 0xff) << 48)
+ | (((long) dataBits[longInDataBitsIndex + 2] & 0xff) << 40)
+ | (((long) dataBits[longInDataBitsIndex + 3] & 0xff) << 32)
+ | (((long) dataBits[longInDataBitsIndex + 4] & 0xff) << 24)
+ | (((long) dataBits[longInDataBitsIndex + 5] & 0xff) << 16)
+ | (((long) dataBits[longInDataBitsIndex + 6] & 0xff) << 8)
+ | (((long) dataBits[longInDataBitsIndex + 7] & 0xff)));
+ }
+ }
+
+ public int read() {
+ if (bitInLongIndex + bitsPerObject > 64) {
+ bitInLongIndex = 0;
+ longInDataBitsIndex += 8;
+ init();
+ }
+
+ int value = (int) (current >>> bitInLongIndex) & mask;
+ bitInLongIndex += bitsPerObject;
+ return value;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/antixray/DataBitsWriter.java b/src/main/java/com/destroystokyo/paper/antixray/DataBitsWriter.java
new file mode 100644
index 0000000000000000000000000000000000000000..333763936897befda5bb6c077944d2667f922799
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/antixray/DataBitsWriter.java
@@ -0,0 +1,79 @@
+package com.destroystokyo.paper.antixray;
+
+public final class DataBitsWriter {
+
+ private byte[] dataBits;
+ private int bitsPerObject;
+ private long mask;
+ private int longInDataBitsIndex;
+ private int bitInLongIndex;
+ private long current;
+ private boolean dirty;
+
+ public void setDataBits(byte[] dataBits) {
+ this.dataBits = dataBits;
+ }
+
+ public void setBitsPerObject(int bitsPerObject) {
+ this.bitsPerObject = bitsPerObject;
+ mask = (1 << bitsPerObject) - 1;
+ }
+
+ public void setIndex(int index) {
+ this.longInDataBitsIndex = index;
+ bitInLongIndex = 0;
+ init();
+ }
+
+ private void init() {
+ if (dataBits.length > longInDataBitsIndex + 7) {
+ current = ((((long) dataBits[longInDataBitsIndex]) << 56)
+ | (((long) dataBits[longInDataBitsIndex + 1] & 0xff) << 48)
+ | (((long) dataBits[longInDataBitsIndex + 2] & 0xff) << 40)
+ | (((long) dataBits[longInDataBitsIndex + 3] & 0xff) << 32)
+ | (((long) dataBits[longInDataBitsIndex + 4] & 0xff) << 24)
+ | (((long) dataBits[longInDataBitsIndex + 5] & 0xff) << 16)
+ | (((long) dataBits[longInDataBitsIndex + 6] & 0xff) << 8)
+ | (((long) dataBits[longInDataBitsIndex + 7] & 0xff)));
+ }
+
+ dirty = false;
+ }
+
+ public void finish() {
+ if (dirty && dataBits.length > longInDataBitsIndex + 7) {
+ dataBits[longInDataBitsIndex] = (byte) (current >> 56 & 0xff);
+ dataBits[longInDataBitsIndex + 1] = (byte) (current >> 48 & 0xff);
+ dataBits[longInDataBitsIndex + 2] = (byte) (current >> 40 & 0xff);
+ dataBits[longInDataBitsIndex + 3] = (byte) (current >> 32 & 0xff);
+ dataBits[longInDataBitsIndex + 4] = (byte) (current >> 24 & 0xff);
+ dataBits[longInDataBitsIndex + 5] = (byte) (current >> 16 & 0xff);
+ dataBits[longInDataBitsIndex + 6] = (byte) (current >> 8 & 0xff);
+ dataBits[longInDataBitsIndex + 7] = (byte) (current & 0xff);
+ }
+ }
+
+ public void write(int value) {
+ if (bitInLongIndex + bitsPerObject > 64) {
+ finish();
+ bitInLongIndex = 0;
+ longInDataBitsIndex += 8;
+ init();
+ }
+
+ current = current & ~(mask << bitInLongIndex) | (value & mask) << bitInLongIndex;
+ dirty = true;
+ bitInLongIndex += bitsPerObject;
+ }
+
+ public void skip() {
+ bitInLongIndex += bitsPerObject;
+
+ if (bitInLongIndex > 64) {
+ finish();
+ bitInLongIndex = bitsPerObject;
+ longInDataBitsIndex += 8;
+ init();
+ }
+ }
+}
diff --git a/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
index a7d10d124021f3427f23fcd533f885367b64515c..3047cf8c4ec1b664d6b790f18d2b1657e4b00435 100644
--- a/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
+++ b/src/main/java/net/minecraft/network/protocol/game/PacketPlayOutMapChunk.java
@@ -1,5 +1,6 @@
package net.minecraft.network.protocol.game;
+import com.destroystokyo.paper.antixray.ChunkPacketInfo; // Paper - Anti-Xray - Add chunk packet info
import com.google.common.collect.Lists;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
@@ -16,6 +17,7 @@ import net.minecraft.network.protocol.Packet;
import net.minecraft.world.level.ChunkCoordIntPair;
import net.minecraft.world.level.block.entity.TileEntity;
import net.minecraft.world.level.block.entity.TileEntitySkull;
+import net.minecraft.world.level.block.state.IBlockData;
import net.minecraft.world.level.chunk.BiomeStorage;
import net.minecraft.world.level.chunk.Chunk;
import net.minecraft.world.level.chunk.ChunkSection;
@@ -33,7 +35,13 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
private List<NBTTagCompound> g;
private boolean h;
- public PacketPlayOutMapChunk() {}
+ // Paper start - Async-Anti-Xray - Set the ready flag to true
+ private volatile boolean ready; // Paper - Async-Anti-Xray - Ready flag for the network manager
+ public PacketPlayOutMapChunk() {
+ this.ready = true;
+ }
+ // Paper end
+
// Paper start
private final java.util.List<Packet> extraPackets = new java.util.ArrayList<>();
private static final int TE_LIMIT = Integer.getInteger("Paper.excessiveTELimit", 750);
@@ -43,7 +51,11 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
return extraPackets;
}
// Paper end
- public PacketPlayOutMapChunk(Chunk chunk, int i) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public PacketPlayOutMapChunk(Chunk chunk, int i) { this(chunk, i, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public PacketPlayOutMapChunk(Chunk chunk, int i, boolean modifyBlocks) {
+ ChunkPacketInfo<IBlockData> chunkPacketInfo = modifyBlocks ? chunk.world.chunkPacketBlockController.getChunkPacketInfo(this, chunk, i) : null;
+ // Paper end
ChunkCoordIntPair chunkcoordintpair = chunk.getPos();
this.a = chunkcoordintpair.x;
@@ -66,7 +78,12 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
}
this.f = new byte[this.a(chunk, i)];
- this.c = this.a(new PacketDataSerializer(this.j()), chunk, i);
+ // Paper start - Anti-Xray - Add chunk packet info
+ if (chunkPacketInfo != null) {
+ chunkPacketInfo.setData(this.getData());
+ }
+ this.c = this.writeChunk(new PacketDataSerializer(this.j()), chunk, i, chunkPacketInfo);
+ // Paper end
this.g = Lists.newArrayList();
iterator = chunk.getTileEntities().entrySet().iterator();
int totalTileEntities = 0; // Paper
@@ -93,8 +110,19 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
this.g.add(nbttagcompound);
}
}
+ chunk.world.chunkPacketBlockController.modifyBlocks(this, chunkPacketInfo); // Paper - Anti-Xray - Modify blocks
+ }
+ // Paper start - Async-Anti-Xray - Getter and Setter for the ready flag
+ @Override
+ public boolean isReady() {
+ return this.ready;
+ }
+
+ public void setReady(boolean ready) {
+ this.ready = ready;
}
+ // Paper end
@Override
public void a(PacketDataSerializer packetdataserializer) throws IOException {
@@ -160,8 +188,12 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
return bytebuf;
}
- public int writeChunk(PacketDataSerializer packetDataSerializer, Chunk chunk, int chunkSectionSelector) { return this.a(packetDataSerializer, chunk, chunkSectionSelector); } // Paper - OBFHELPER
- public int a(PacketDataSerializer packetdataserializer, Chunk chunk, int i) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public int writeChunk(PacketDataSerializer packetDataSerializer, Chunk chunk, int chunkSectionSelector) { return this.a(packetDataSerializer, chunk, chunkSectionSelector); } // OBFHELPER // Notice for updates: Please make sure this method isn't used anywhere
+ @Deprecated public int a(PacketDataSerializer packetdataserializer, Chunk chunk, int i) { return this.writeChunk(packetdataserializer, chunk, i, null); } // Notice for updates: Please make sure this method isn't used anywhere
+ public int writeChunk(PacketDataSerializer packetDataSerializer, Chunk chunk, int chunkSectionSelector, ChunkPacketInfo<IBlockData> chunkPacketInfo) { return this.a(packetDataSerializer, chunk, chunkSectionSelector, chunkPacketInfo); } // OBFHELPER
+ public int a(PacketDataSerializer packetdataserializer, Chunk chunk, int i, ChunkPacketInfo<IBlockData> chunkPacketInfo) {
+ // Paper end
int j = 0;
ChunkSection[] achunksection = chunk.getSections();
int k = 0;
@@ -171,7 +203,7 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
if (chunksection != Chunk.a && (!this.f() || !chunksection.c()) && (i & 1 << k) != 0) {
j |= 1 << k;
- chunksection.b(packetdataserializer);
+ chunksection.writeChunkSection(packetdataserializer, chunkPacketInfo); // Paper - Anti-Xray - Add chunk packet info
}
}
diff --git a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
index 1f32ab230d650bb5f652efbacdd5e4b90dc4de89..71c2792d7eede35485cc36ac929cf295bcd4646b 100644
--- a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java
@@ -656,7 +656,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
}
this.g(chunkcoordintpair);
- return Either.left(new ProtoChunk(chunkcoordintpair, ChunkConverter.a));
+ return Either.left(new ProtoChunk(chunkcoordintpair, ChunkConverter.a, this.world)); // Paper - Anti-Xray - Add parameter
}, this.executor);
}
@@ -1396,9 +1396,10 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
}
+ private final void sendChunk(EntityPlayer entityplayer, Packet<?>[] apacket, Chunk chunk) { this.a(entityplayer, apacket, chunk); } // Paper - OBFHELPER
private void a(EntityPlayer entityplayer, Packet<?>[] apacket, Chunk chunk) {
if (apacket[0] == null) {
- apacket[0] = new PacketPlayOutMapChunk(chunk, 65535);
+ apacket[0] = new PacketPlayOutMapChunk(chunk, 65535, chunk.world.chunkPacketBlockController.shouldModify(entityplayer, chunk, 65535)); // Paper - Anti-Xray - Bypass
apacket[1] = new PacketPlayOutLightUpdate(chunk.getPos(), this.lightEngine, true);
}
diff --git a/src/main/java/net/minecraft/server/level/PlayerInteractManager.java b/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
index d86b1e528b53db809ac993aa2f1d2799d4f1a574..fbd8a6985a261396789c87e4b687140bd49cea0d 100644
--- a/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
+++ b/src/main/java/net/minecraft/server/level/PlayerInteractManager.java
@@ -309,6 +309,8 @@ public class PlayerInteractManager {
}
}
+
+ this.world.chunkPacketBlockController.onPlayerLeftClickBlock(this, blockposition, enumdirection); // Paper - Anti-Xray
}
public void a(BlockPosition blockposition, PacketPlayInBlockDig.EnumPlayerDigType packetplayinblockdig_enumplayerdigtype, String s) {
diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java
index 735da5729c16940e3d8877f32a40342b9d1e989d..caf3d4df460d2d6dad6e68a68e1256e3603e3891 100644
--- a/src/main/java/net/minecraft/server/level/WorldServer.java
+++ b/src/main/java/net/minecraft/server/level/WorldServer.java
@@ -210,7 +210,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
// Add env and gen to constructor, WorldData -> WorldDataServer
public WorldServer(MinecraftServer minecraftserver, Executor executor, Convertable.ConversionSession convertable_conversionsession, IWorldDataServer iworlddataserver, ResourceKey<World> resourcekey, DimensionManager dimensionmanager, WorldLoadListener worldloadlistener, ChunkGenerator chunkgenerator, boolean flag, long i, List<MobSpawner> list, boolean flag1, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen) {
- super(iworlddataserver, resourcekey, dimensionmanager, minecraftserver::getMethodProfiler, false, flag, i, gen, env);
+ super(iworlddataserver, resourcekey, dimensionmanager, minecraftserver::getMethodProfiler, false, flag, i, gen, env, executor); // Paper pass executor
this.pvpMode = minecraftserver.getPVP();
convertable = convertable_conversionsession;
uuid = WorldUUID.getUUID(convertable_conversionsession.folder.toFile());
diff --git a/src/main/java/net/minecraft/world/level/World.java b/src/main/java/net/minecraft/world/level/World.java
index 12ac3608736b45447afe6b0d35ead1441390be5e..15da3511a9e57c320f4cf409852bee07109095bc 100644
--- a/src/main/java/net/minecraft/world/level/World.java
+++ b/src/main/java/net/minecraft/world/level/World.java
@@ -2,6 +2,8 @@ package net.minecraft.world.level;
import co.aikar.timings.Timing;
import co.aikar.timings.Timings;
+import com.destroystokyo.paper.antixray.ChunkPacketBlockController; // Paper - Anti-Xray
+import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray; // Paper - Anti-Xray
import com.destroystokyo.paper.event.server.ServerExceptionEvent;
import com.destroystokyo.paper.exception.ServerInternalException;
import com.google.common.base.MoreObjects;
@@ -144,6 +146,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
public final org.spigotmc.SpigotWorldConfig spigotConfig; // Spigot
public final com.destroystokyo.paper.PaperWorldConfig paperConfig; // Paper
+ public final ChunkPacketBlockController chunkPacketBlockController; // Paper - Anti-Xray
public final co.aikar.timings.WorldTimingsHandler timings; // Paper
public static BlockPosition lastPhysicsProblem; // Spigot
@@ -165,9 +168,10 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
return typeKey;
}
- protected World(WorldDataMutable worlddatamutable, ResourceKey<World> resourcekey, final DimensionManager dimensionmanager, Supplier<GameProfilerFiller> supplier, boolean flag, boolean flag1, long i, org.bukkit.generator.ChunkGenerator gen, org.bukkit.World.Environment env) {
+ protected World(WorldDataMutable worlddatamutable, ResourceKey<World> resourcekey, final DimensionManager dimensionmanager, Supplier<GameProfilerFiller> supplier, boolean flag, boolean flag1, long i, org.bukkit.generator.ChunkGenerator gen, org.bukkit.World.Environment env, java.util.concurrent.Executor executor) { // Paper
this.spigotConfig = new org.spigotmc.SpigotWorldConfig(((net.minecraft.world.level.storage.WorldDataServer) worlddatamutable).getName()); // Spigot
this.paperConfig = new com.destroystokyo.paper.PaperWorldConfig(((net.minecraft.world.level.storage.WorldDataServer) worlddatamutable).getName(), this.spigotConfig); // Paper
+ this.chunkPacketBlockController = this.paperConfig.antiXray ? new ChunkPacketBlockControllerAntiXray(this, executor) : ChunkPacketBlockController.NO_OPERATION_INSTANCE; // Paper - Anti-Xray
this.generator = gen;
this.world = new CraftWorld((WorldServer) this, gen, env);
this.ticksPerAnimalSpawns = this.getServer().getTicksPerAnimalSpawns(); // CraftBukkit
@@ -433,6 +437,7 @@ public abstract class World implements GeneratorAccess, AutoCloseable {
// CraftBukkit end
IBlockData iblockdata1 = chunk.setType(blockposition, iblockdata, (i & 64) != 0, (i & 1024) == 0); // CraftBukkit custom NO_PLACE flag
+ this.chunkPacketBlockController.onBlockChange(this, blockposition, iblockdata, iblockdata1, i); // 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/Chunk.java b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
index 2690c44eaae193a259fe195c95e59d07d5e1cc5a..3fdce0e6fa34eb4b1eafc618068a3fb06abd5ec1 100644
--- a/src/main/java/net/minecraft/world/level/chunk/Chunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/Chunk.java
@@ -465,7 +465,7 @@ public class Chunk implements IChunkAccess {
return null;
}
- chunksection = new ChunkSection(j >> 4 << 4);
+ chunksection = new ChunkSection(j >> 4 << 4, this, this.world, true); // Paper - Anti-Xray - Add parameters
this.sections[j >> 4] = chunksection;
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkEmpty.java b/src/main/java/net/minecraft/world/level/chunk/ChunkEmpty.java
index 89efd0b68b04457e1cd617dcc8bb1a6ea1c4717c..9fb8d20e9e1a8cc716c32a100b1d70e90f385eca 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkEmpty.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkEmpty.java
@@ -8,6 +8,7 @@ import net.minecraft.SystemUtils;
import net.minecraft.core.BlockPosition;
import net.minecraft.core.IRegistry;
import net.minecraft.data.worldgen.biome.BiomeRegistry;
+import net.minecraft.server.MinecraftServer;
import net.minecraft.server.level.PlayerChunk;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.level.ChunkCoordIntPair;
@@ -28,7 +29,7 @@ public class ChunkEmpty extends Chunk {
});
public ChunkEmpty(World world, ChunkCoordIntPair chunkcoordintpair) {
- super(world, chunkcoordintpair, new BiomeStorage(world.r().b(IRegistry.ay), ChunkEmpty.b));
+ super(world, chunkcoordintpair, new BiomeStorage(MinecraftServer.getServer().getCustomRegistry().b(IRegistry.ay), ChunkEmpty.b)); // Paper - world isnt ready yet for anti xray use here, use server singleton for registry
}
// Paper start
diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/ChunkSection.java
index eea4a30428293eaf7afbe303a37adec60b44c2b4..0b4e346daaea91565fde2f789fafa8b431a7b042 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ChunkSection.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkSection.java
@@ -1,9 +1,11 @@
package net.minecraft.world.level.chunk;
import java.util.function.Predicate;
+import com.destroystokyo.paper.antixray.ChunkPacketInfo; // Paper - Anti-Xray - Add chunk packet info
import javax.annotation.Nullable;
import net.minecraft.nbt.GameProfileSerializer;
import net.minecraft.network.PacketDataSerializer;
+import net.minecraft.world.level.World;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.world.level.block.state.IBlockData;
@@ -18,16 +20,22 @@ public class ChunkSection {
private short e;
final DataPaletteBlock<IBlockData> blockIds; // Paper - package-private
- public ChunkSection(int i) {
- this(i, (short) 0, (short) 0, (short) 0);
+ // Paper start - Anti-Xray - Add parameters
+ @Deprecated public ChunkSection(int i) { this(i, null, null, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ChunkSection(int i, IChunkAccess chunk, World world, boolean initializeBlocks) {
+ this(i, (short) 0, (short) 0, (short) 0, chunk, world, initializeBlocks);
+ // Paper end
}
- public ChunkSection(int i, short short0, short short1, short short2) {
+ // Paper start - Anti-Xray - Add parameters
+ @Deprecated public ChunkSection(int i, short short0, short short1, short short2) { this(i, short0, short1, short2, null, null, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ChunkSection(int i, short short0, short short1, short short2, IChunkAccess chunk, World world, boolean initializeBlocks) {
+ // Paper end
this.yPos = i;
this.nonEmptyBlockCount = short0;
this.tickingBlockCount = short1;
this.e = short2;
- this.blockIds = new DataPaletteBlock<>(ChunkSection.GLOBAL_PALETTE, Block.REGISTRY_ID, GameProfileSerializer::c, GameProfileSerializer::a, Blocks.AIR.getBlockData());
+ this.blockIds = new DataPaletteBlock<>(ChunkSection.GLOBAL_PALETTE, Block.REGISTRY_ID, GameProfileSerializer::c, GameProfileSerializer::a, Blocks.AIR.getBlockData(), world == null ? null : world.chunkPacketBlockController.getPredefinedBlockData(world, chunk, this, initializeBlocks), initializeBlocks); // Paper - Anti-Xray - Add predefined block data
}
public final IBlockData getType(int i, int j, int k) { // Paper
@@ -139,10 +147,14 @@ public class ChunkSection {
return this.blockIds;
}
- public void writeChunkSection(PacketDataSerializer packetDataSerializer) { this.b(packetDataSerializer); } // Paper - OBFHELPER
- public void b(PacketDataSerializer packetdataserializer) {
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public final void writeChunkSection(PacketDataSerializer packetDataSerializer) { this.b(packetDataSerializer); } // OBFHELPER // Notice for updates: Please make sure this method isn't used anywhere
+ @Deprecated public final void b(PacketDataSerializer packetdataserializer) { this.writeChunkSection(packetdataserializer, null); } // Notice for updates: Please make sure this method isn't used anywhere
+ public final void writeChunkSection(PacketDataSerializer packetDataSerializer, ChunkPacketInfo<IBlockData> chunkPacketInfo) { this.b(packetDataSerializer, chunkPacketInfo); } // OBFHELPER
+ public void b(PacketDataSerializer packetdataserializer, ChunkPacketInfo<IBlockData> chunkPacketInfo) {
+ // Paper end
packetdataserializer.writeShort(this.nonEmptyBlockCount);
- this.blockIds.b(packetdataserializer);
+ this.blockIds.writeDataPaletteBlock(packetdataserializer, chunkPacketInfo, this.yPos >> 4); // Paper - Anti-Xray - Add chunk packet info
}
public int j() {
diff --git a/src/main/java/net/minecraft/world/level/chunk/DataPaletteBlock.java b/src/main/java/net/minecraft/world/level/chunk/DataPaletteBlock.java
index cc0c5995dc3840ce66ea849849f7c37555d3b5e6..68d53a51acc9790b9cda20ec4d2ec6edd1baac1a 100644
--- a/src/main/java/net/minecraft/world/level/chunk/DataPaletteBlock.java
+++ b/src/main/java/net/minecraft/world/level/chunk/DataPaletteBlock.java
@@ -1,6 +1,7 @@
package net.minecraft.world.level.chunk;
import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+import com.destroystokyo.paper.antixray.ChunkPacketInfo; // Paper - Anti-Xray - Add chunk packet info
import java.util.Arrays;
import java.util.Objects;
import java.util.concurrent.locks.ReentrantLock;
@@ -27,6 +28,7 @@ public class DataPaletteBlock<T> implements DataPaletteExpandable<T> {
private final Function<NBTTagCompound, T> e;
private final Function<T, NBTTagCompound> f;
private final T g;
+ private final T[] predefinedObjects; // Paper - Anti-Xray - Add predefined objects
protected DataBits a; public final DataBits getDataBits() { return this.a; } // Paper - OBFHELPER
private DataPalette<T> h; private DataPalette<T> getDataPalette() { return this.h; } // Paper - OBFHELPER
private int i; private int getBitsPerObject() { return this.i; } // Paper - OBFHELPER
@@ -51,14 +53,47 @@ public class DataPaletteBlock<T> implements DataPaletteExpandable<T> {
//this.j.unlock(); // Paper - disable this
}
- public DataPaletteBlock(DataPalette<T> datapalette, RegistryBlockID<T> registryblockid, Function<NBTTagCompound, T> function, Function<T, NBTTagCompound> function1, T t0) {
+ // Paper start - Anti-Xray - Add predefined objects
+ @Deprecated public DataPaletteBlock(DataPalette<T> datapalette, RegistryBlockID<T> registryblockid, Function<NBTTagCompound, T> function, Function<T, NBTTagCompound> function1, T t0) { this(datapalette, registryblockid, function, function1, t0, null, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public DataPaletteBlock(DataPalette<T> datapalette, RegistryBlockID<T> registryblockid, Function<NBTTagCompound, T> function, Function<T, NBTTagCompound> function1, T t0, T[] predefinedObjects, boolean initialize) {
+ // Paper end
this.b = datapalette;
this.d = registryblockid;
this.e = function;
this.f = function1;
this.g = t0;
- this.b(4);
+ // Paper start - Anti-Xray - Add predefined objects
+ this.predefinedObjects = predefinedObjects;
+
+ if (initialize) {
+ if (predefinedObjects == null) {
+ // Default
+ this.initialize(4);
+ } else {
+ // MathHelper.d() is trailingBits(roundCeilPow2(n)), alternatively; (int)ceil(log2(n)); however it's trash, use numberOfLeadingZeros instead
+ // Count the bits of the maximum array index to initialize a data palette with enough space from the beginning
+ // The length of the array is used because air is also added to the data palette from the beginning
+ // Start with at least 4
+ int maxIndex = predefinedObjects.length >> 4;
+ int bitCount = (32 - Integer.numberOfLeadingZeros(Math.max(16, maxIndex) - 1));
+
+ // Initialize with at least 15 free indixes
+ this.initialize((1 << bitCount) - predefinedObjects.length < 16 ? bitCount + 1 : bitCount);
+ this.addPredefinedObjects();
+ }
+ }
+ // Paper end
+ }
+
+ // Paper start - Anti-Xray - Add predefined objects
+ private void addPredefinedObjects() {
+ if (this.predefinedObjects != null && this.getDataPalette() != this.getDataPaletteGlobal()) {
+ for (int i = 0; i < this.predefinedObjects.length; i++) {
+ this.getDataPalette().getOrCreateIdFor(this.predefinedObjects[i]);
+ }
+ }
}
+ // Paper end
private static int b(int i, int j, int k) {
return j << 8 | k << 4 | i;
@@ -93,6 +128,7 @@ public class DataPaletteBlock<T> implements DataPaletteExpandable<T> {
int j;
+ this.addPredefinedObjects(); // Paper - Anti-Xray - Add predefined objects
for (j = 0; j < databits.b(); ++j) {
T t1 = datapalette.a(databits.a(j));
@@ -142,24 +178,38 @@ public class DataPaletteBlock<T> implements DataPaletteExpandable<T> {
return t0 == null ? this.g : t0;
}
- public void writeDataPaletteBlock(PacketDataSerializer packetDataSerializer) { this.b(packetDataSerializer); } // Paper - OBFHELPER
- public synchronized void b(PacketDataSerializer packetdataserializer) { // Paper - synchronize
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public void writeDataPaletteBlock(PacketDataSerializer packetDataSerializer) { this.b(packetDataSerializer); } // OBFHELPER // Notice for updates: Please make sure this method isn't used anywhere
+ @Deprecated public void b(PacketDataSerializer packetdataserializer) { this.writeDataPaletteBlock(packetdataserializer, null, 0); } // Notice for updates: Please make sure this method isn't used anywhere
+ public void writeDataPaletteBlock(PacketDataSerializer packetDataSerializer, ChunkPacketInfo<T> chunkPacketInfo, int chunkSectionIndex) { this.b(packetDataSerializer, chunkPacketInfo, chunkSectionIndex); } // OBFHELPER
+ public synchronized void b(PacketDataSerializer packetdataserializer, ChunkPacketInfo<T> chunkPacketInfo, int chunkSectionIndex) { // Paper - synchronize
+ // Paper end
this.a();
packetdataserializer.writeByte(this.i);
this.h.b(packetdataserializer);
+ // Paper start - Anti-Xray - Add chunk packet info
+ if (chunkPacketInfo != null) {
+ chunkPacketInfo.setBitsPerObject(chunkSectionIndex, this.getBitsPerObject());
+ chunkPacketInfo.setDataPalette(chunkSectionIndex, this.getDataPalette());
+ chunkPacketInfo.setDataBitsIndex(chunkSectionIndex, packetdataserializer.writerIndex() + PacketDataSerializer.countBytes(this.getDataBits().getDataBits().length));
+ chunkPacketInfo.setPredefinedObjects(chunkSectionIndex, this.predefinedObjects);
+ }
+ // Paper end
packetdataserializer.a(this.a.a());
this.b();
}
public synchronized void a(NBTTagList nbttaglist, long[] along) { // Paper - synchronize
this.a();
- int i = Math.max(4, MathHelper.e(nbttaglist.size()));
+ // Paper - Anti-Xray - TODO: Should this.predefinedObjects.length just be added here (faster) or should the contents be compared to calculate the size (less RAM)?
+ int i = Math.max(4, MathHelper.e(nbttaglist.size() + (this.predefinedObjects == null ? 0 : this.predefinedObjects.length))); // Paper - Anti-Xray - Calculate the size with predefined objects
- if (i != this.i) {
+ if (true || i != this.i) { // Paper - Anti-Xray - Not initialized yet
this.b(i);
}
this.h.a(nbttaglist);
+ this.addPredefinedObjects(); // Paper - Anti-Xray - Add predefined objects
int j = along.length * 64 / 4096;
if (this.h == this.b) {
diff --git a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
index 9eeb99a21a6ed7f71ff64cf4cfdff646d31abbcf..9b308a10554b037ede0c455fbd3e906021218ddc 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
@@ -64,16 +64,24 @@ public class ProtoChunk implements IChunkAccess {
private long s;
private final Map<WorldGenStage.Features, BitSet> t;
private volatile boolean u;
+ private final World world; // Paper - Anti-Xray - Add world
- public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter) {
+ // Paper start - Anti-Xray - Add world
+ @Deprecated public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter) { this(chunkcoordintpair, chunkconverter, null); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, World world) {
+ // Paper end
this(chunkcoordintpair, chunkconverter, (ChunkSection[]) null, new ProtoChunkTickList<>((block) -> {
return block == null || block.getBlockData().isAir();
}, chunkcoordintpair), new ProtoChunkTickList<>((fluidtype) -> {
return fluidtype == null || fluidtype == FluidTypes.EMPTY;
- }, chunkcoordintpair));
+ }, chunkcoordintpair), world); // Paper - Anti-Xray - Add world
}
- public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, @Nullable ChunkSection[] achunksection, ProtoChunkTickList<Block> protochunkticklist, ProtoChunkTickList<FluidType> protochunkticklist1) {
+ // Paper start - Anti-Xray - Add world
+ @Deprecated public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, @Nullable ChunkSection[] achunksection, ProtoChunkTickList<Block> protochunkticklist, ProtoChunkTickList<FluidType> protochunkticklist1) { this(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, null); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, @Nullable ChunkSection[] achunksection, ProtoChunkTickList<Block> protochunkticklist, ProtoChunkTickList<FluidType> protochunkticklist1, World world) {
+ this.world = world;
+ // Paper end
this.f = Maps.newEnumMap(HeightMap.Type.class);
this.g = ChunkStatus.EMPTY;
this.h = Maps.newHashMap();
@@ -228,7 +236,7 @@ public class ProtoChunk implements IChunkAccess {
public ChunkSection a(int i) {
if (this.j[i] == Chunk.a) {
- this.j[i] = new ChunkSection(i << 4);
+ this.j[i] = new ChunkSection(i << 4, this, this.world, true); // Paper - Anti-Xray - Add parameters
}
return this.j[i];
diff --git a/src/main/java/net/minecraft/world/level/chunk/ProtoChunkExtension.java b/src/main/java/net/minecraft/world/level/chunk/ProtoChunkExtension.java
index 9351e6ba541d440c485b6e4a3209170c5756e31e..7a82d43d51d80a3054e0871bf4b9aa7635920efc 100644
--- a/src/main/java/net/minecraft/world/level/chunk/ProtoChunkExtension.java
+++ b/src/main/java/net/minecraft/world/level/chunk/ProtoChunkExtension.java
@@ -27,7 +27,7 @@ public class ProtoChunkExtension extends ProtoChunk {
private final Chunk a;
public ProtoChunkExtension(Chunk chunk) {
- super(chunk.getPos(), ChunkConverter.a);
+ super(chunk.getPos(), ChunkConverter.a, chunk.world); // Paper - Anti-Xray - Add parameter
this.a = chunk;
}
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkRegionLoader.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkRegionLoader.java
index 98bc26c7ae01884eb53766e72fc7cbabbf065e6e..c652897aae99c48c6cc020b5d64f6a8b02beecb5 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkRegionLoader.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkRegionLoader.java
@@ -101,7 +101,7 @@ public class ChunkRegionLoader {
byte b0 = nbttagcompound2.getByte("Y");
if (nbttagcompound2.hasKeyOfType("Palette", 9) && nbttagcompound2.hasKeyOfType("BlockStates", 12)) {
- ChunkSection chunksection = new ChunkSection(b0 << 4);
+ ChunkSection chunksection = new ChunkSection(b0 << 4, null, worldserver, false); // Paper - Anti-Xray - Add parameters
chunksection.getBlocks().a(nbttagcompound2.getList("Palette", 10), nbttagcompound2.getLongArray("BlockStates"));
chunksection.recalcBlockCounts();
@@ -165,7 +165,7 @@ public class ChunkRegionLoader {
// CraftBukkit end
});
} else {
- ProtoChunk protochunk = new ProtoChunk(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1);
+ ProtoChunk protochunk = new ProtoChunk(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, worldserver); // Paper - Anti-Xray - Add parameter
protochunk.a(biomestorage);
object = protochunk;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
index a8e94f69faec93661dc6ae2efeec44b8bfd2e965..c36f55f178166eb099cc5c64784be5a9f4750199 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
@@ -44,7 +44,7 @@ public class CraftChunk implements Chunk {
private final WorldServer worldServer;
private final int x;
private final int z;
- private static final DataPaletteBlock<IBlockData> emptyBlockIDs = new ChunkSection(0).getBlocks();
+ private static final DataPaletteBlock<IBlockData> emptyBlockIDs = new ChunkSection(0, null, null, true).getBlocks(); // Paper - Anti-Xray - Add parameters
private static final byte[] emptyLight = new byte[2048];
public CraftChunk(net.minecraft.world.level.chunk.Chunk chunk) {
@@ -288,7 +288,7 @@ public class CraftChunk implements Chunk {
NBTTagCompound data = new NBTTagCompound();
cs[i].getBlocks().a(data, "Palette", "BlockStates");
- DataPaletteBlock blockids = new DataPaletteBlock<>(ChunkSection.GLOBAL_PALETTE, net.minecraft.world.level.block.Block.REGISTRY_ID, GameProfileSerializer::c, GameProfileSerializer::a, Blocks.AIR.getBlockData()); // TODO: snapshot whole ChunkSection
+ DataPaletteBlock blockids = new DataPaletteBlock<>(ChunkSection.GLOBAL_PALETTE, net.minecraft.world.level.block.Block.REGISTRY_ID, GameProfileSerializer::c, GameProfileSerializer::a, Blocks.AIR.getBlockData(), null, false); // TODO: snapshot whole ChunkSection // Paper - Anti-Xray - Add no predefined block data and don't initialize because it's done in the line below internally
blockids.a(data.getList("Palette", CraftMagicNumbers.NBT.TAG_COMPOUND), data.getLongArray("BlockStates"));
sectionBlockIDs[i] = blockids;
diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
index 3d15915275331cb767750c24c89b4b43d43033ef..afca0038bb74ac53f07a25729a3c1542e244c6fd 100644
--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java
@@ -21,9 +21,11 @@ public final class CraftChunkData implements ChunkGenerator.ChunkData {
private final int maxHeight;
private final ChunkSection[] sections;
private Set<BlockPosition> tiles;
+ private World world; // Paper - Anti-Xray - Add world
public CraftChunkData(World world) {
this(world.getMaxHeight());
+ this.world = world; // Paper - Anti-Xray - Add world
}
/* pp for tests */ CraftChunkData(int maxHeight) {
@@ -157,7 +159,7 @@ public final class CraftChunkData implements ChunkGenerator.ChunkData {
private ChunkSection getChunkSection(int y, boolean create) {
ChunkSection section = sections[y >> 4];
if (create && section == null) {
- sections[y >> 4] = section = new ChunkSection(y >> 4 << 4);
+ sections[y >> 4] = section = new ChunkSection(y >> 4 << 4, null, world instanceof org.bukkit.craftbukkit.CraftWorld ? ((org.bukkit.craftbukkit.CraftWorld) world).getHandle() : null, true); // Paper - Anti-Xray - Add parameters
}
return section;
}
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