diff --git a/Spigot-Server-Patches/0408-Anti-Xray.patch b/Spigot-Server-Patches/0408-Anti-Xray.patch new file mode 100644 index 0000000000..ad50f76897 --- /dev/null +++ b/Spigot-Server-Patches/0408-Anti-Xray.patch @@ -0,0 +1,1580 @@ +From 9f304c5c1ecc2202f221f1e80b67d2cc1b4494e7 Mon Sep 17 00:00:00 2001 +From: stonar96 +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 58109e1308..93d397d317 100644 +--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java ++++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java +@@ -1,7 +1,11 @@ + package com.destroystokyo.paper; + ++import java.util.Arrays; + import java.util.List; + ++import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.ChunkEdgeMode; ++import com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray.EngineMode; ++import net.minecraft.server.MinecraftServer; + import org.bukkit.Bukkit; + import org.bukkit.configuration.file.YamlConfiguration; + import org.spigotmc.SpigotWorldConfig; +@@ -509,4 +513,34 @@ public class PaperWorldConfig { + private void maxAutoSaveChunksPerTick() { + maxAutoSaveChunksPerTick = getInt("max-auto-save-chunks-per-tick", 24); + } ++ ++ public boolean antiXray; ++ public boolean asynchronous; ++ public EngineMode engineMode; ++ public ChunkEdgeMode chunkEdgeMode; ++ public int maxChunkSectionIndex; ++ public int updateRadius; ++ public List hiddenBlocks; ++ public List replacementBlocks; ++ private void antiXray() { ++ antiXray = getBoolean("anti-xray.enabled", false); ++ asynchronous = true; ++ engineMode = EngineMode.getById(getInt("anti-xray.engine-mode", EngineMode.HIDE.getId())); ++ engineMode = engineMode == null ? EngineMode.HIDE : engineMode; ++ chunkEdgeMode = ChunkEdgeMode.getById(getInt("anti-xray.chunk-edge-mode", ChunkEdgeMode.WAIT.getId())); ++ chunkEdgeMode = chunkEdgeMode == null ? ChunkEdgeMode.DEFAULT : chunkEdgeMode; ++ ++ if (chunkEdgeMode != ChunkEdgeMode.WAIT) { ++ log("Migrating anti-xray chunk edge mode to " + ChunkEdgeMode.WAIT + " (" + ChunkEdgeMode.WAIT.getId() + ")"); ++ chunkEdgeMode = ChunkEdgeMode.WAIT; ++ set("anti-xray.chunk-edge-mode", ChunkEdgeMode.WAIT.getId()); ++ } ++ ++ maxChunkSectionIndex = getInt("anti-xray.max-chunk-section-index", 3); ++ maxChunkSectionIndex = maxChunkSectionIndex > 15 ? 15 : maxChunkSectionIndex; ++ updateRadius = getInt("anti-xray.update-radius", 2); ++ 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")); ++ log("Anti-Xray: " + (antiXray ? "enabled" : "disabled") + " / Engine Mode: " + engineMode.getDescription() + " / Chunk Edge Mode: " + chunkEdgeMode.getDescription() + " / Up to " + ((maxChunkSectionIndex + 1) * 16) + " blocks / Update Radius: " + updateRadius); ++ } + } +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 0000000000..dc534d239e +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java +@@ -0,0 +1,45 @@ ++package com.destroystokyo.paper.antixray; ++ ++import net.minecraft.server.BlockPosition; ++import net.minecraft.server.Chunk; ++import net.minecraft.server.ChunkSection; ++import net.minecraft.server.EnumDirection; ++import net.minecraft.server.IBlockData; ++import net.minecraft.server.IChunkAccess; ++import net.minecraft.server.IWorldReader; ++import net.minecraft.server.PacketPlayOutMapChunk; ++import net.minecraft.server.PlayerInteractManager; ++import net.minecraft.server.World; ++ ++public class ChunkPacketBlockController { ++ ++ public static final ChunkPacketBlockController NO_OPERATION_INSTANCE = new ChunkPacketBlockController(); ++ ++ protected ChunkPacketBlockController() { ++ ++ } ++ ++ public IBlockData[] getPredefinedBlockData(IWorldReader world, IChunkAccess chunk, ChunkSection chunkSection, boolean initializeBlocks) { ++ return null; ++ } ++ ++ public boolean onChunkPacketCreate(Chunk chunk, int chunkSectionSelector, boolean force) { ++ return true; ++ } ++ ++ public ChunkPacketInfo getChunkPacketInfo(PacketPlayOutMapChunk packetPlayOutMapChunk, Chunk chunk, int chunkSectionSelector) { ++ return null; ++ } ++ ++ public void modifyBlocks(PacketPlayOutMapChunk packetPlayOutMapChunk, ChunkPacketInfo 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 0000000000..3aa614833d +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java +@@ -0,0 +1,691 @@ ++package com.destroystokyo.paper.antixray; ++ ++import java.util.ArrayList; ++import java.util.HashSet; ++import java.util.List; ++import java.util.Set; ++import java.util.concurrent.ExecutorService; ++import java.util.concurrent.Executors; ++ ++import net.minecraft.server.*; ++import org.bukkit.World.Environment; ++ ++import com.destroystokyo.paper.PaperWorldConfig; ++ ++public class ChunkPacketBlockControllerAntiXray extends ChunkPacketBlockController { ++ ++ private static ExecutorService executorServiceInstance = null; ++ private final ExecutorService executorService; ++ private final boolean asynchronous; ++ private final EngineMode engineMode; ++ private final ChunkEdgeMode chunkEdgeMode; ++ private final int maxChunkSectionIndex; ++ private final int updateRadius; ++ private final IBlockData[] predefinedBlockData; ++ 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(PaperWorldConfig paperWorldConfig) { ++ asynchronous = paperWorldConfig.asynchronous; ++ engineMode = paperWorldConfig.engineMode; ++ chunkEdgeMode = paperWorldConfig.chunkEdgeMode; ++ maxChunkSectionIndex = paperWorldConfig.maxChunkSectionIndex; ++ updateRadius = paperWorldConfig.updateRadius; ++ ++ if (asynchronous) { ++ executorService = getExecutorServiceInstance(); ++ } else { ++ executorService = null; ++ } ++ ++ List toObfuscate; ++ ++ if (engineMode == EngineMode.HIDE) { ++ toObfuscate = paperWorldConfig.hiddenBlocks; ++ predefinedBlockData = 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); ++ Set predefinedBlockDataSet = new HashSet(); ++ ++ for (String id : paperWorldConfig.hiddenBlocks) { ++ Block block = IRegistry.BLOCK.getOptional(new MinecraftKey(id)).orElse(null); ++ ++ if (block != null && !block.isTileEntity()) { ++ toObfuscate.add(id); ++ predefinedBlockDataSet.add(block.getBlockData()); ++ } ++ } ++ ++ predefinedBlockData = predefinedBlockDataSet.size() == 0 ? new IBlockData[] {Blocks.DIAMOND_ORE.getBlockData()} : predefinedBlockDataSet.toArray(new IBlockData[0]); ++ predefinedBlockDataStone = null; ++ predefinedBlockDataNetherrack = null; ++ predefinedBlockDataEndStone = null; ++ predefinedBlockDataBitsGlobal = new int[predefinedBlockData.length]; ++ ++ for (int i = 0; i < predefinedBlockData.length; i++) { ++ predefinedBlockDataBitsGlobal[i] = ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(predefinedBlockData[i]); ++ } ++ ++ predefinedBlockDataBitsStoneGlobal = null; ++ predefinedBlockDataBitsNetherrackGlobal = null; ++ predefinedBlockDataBitsEndStoneGlobal = null; ++ } ++ ++ for (String id : toObfuscate) { ++ Block block = IRegistry.BLOCK.getOptional(new MinecraftKey(id)).orElse(null); ++ ++ if (block != null) { ++ obfuscateGlobal[ChunkSection.GLOBAL_PALETTE.getOrCreateIdFor(block.getBlockData())] = true; ++ } ++ } ++ ++ ChunkEmpty emptyChunk = new ChunkEmpty(null, 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.getBlock().isOccluding(blockData, emptyChunk, zeroPos) ++ && blockData.getBlock() != Blocks.SPAWNER && blockData.getBlock() != Blocks.BARRIER && blockData.getBlock() != Blocks.SHULKER_BOX; ++ // shulker box checks TE. ++ } ++ } ++ ++ this.maxBlockYUpdatePosition = (maxChunkSectionIndex + 1) * 16 + updateRadius - 1; ++ } ++ ++ private static ExecutorService getExecutorServiceInstance() { ++ if (executorServiceInstance == null) { ++ executorServiceInstance = Executors.newSingleThreadExecutor(); ++ } ++ ++ return executorServiceInstance; ++ } ++ ++ @Override ++ public IBlockData[] getPredefinedBlockData(IWorldReader 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: ++ if (world instanceof GeneratorAccess) { ++ switch (((GeneratorAccess) world).getMinecraftWorld().getWorld().getEnvironment()) { ++ case NETHER: ++ return predefinedBlockDataNetherrack; ++ case THE_END: ++ return predefinedBlockDataEndStone; ++ default: ++ return predefinedBlockDataStone; ++ } ++ } ++ ++ return null; ++ default: ++ return predefinedBlockData; ++ } ++ } ++ ++ return null; ++ } ++ ++ @Override ++ public boolean onChunkPacketCreate(Chunk chunk, int chunkSectionSelector, boolean force) { ++ int locX = chunk.getPos().x; ++ int locZ = chunk.getPos().z; ++ WorldServer world = (WorldServer)chunk.world; ++ ChunkProviderServer chunkProvider = world.getChunkProvider(); ++ ++ //Load nearby chunks if necessary ++ if (force || chunkEdgeMode == ChunkEdgeMode.LOAD) { // TODO temporary ++ // if forced, load NOW; ++ chunk.world.getChunkAt(locX - 1, locZ); ++ chunk.world.getChunkAt(locX + 1, locZ); ++ chunk.world.getChunkAt(locX, locZ - 1); ++ chunk.world.getChunkAt(locX, locZ + 1); ++ } else if (chunkEdgeMode == ChunkEdgeMode.WAIT) { ++ if (chunkProvider.getChunkAtIfCachedImmediately(locX - 1, locZ) == null || chunkProvider.getChunkAtIfCachedImmediately(locX + 1, locZ) == null || chunkProvider.getChunkAtIfCachedImmediately(locX, locZ - 1) == null || chunkProvider.getChunkAtIfCachedImmediately(locX, locZ + 1) == null) { ++ //Don't create the chunk packet now, wait until nearby chunks are loaded and create it later ++ return false; ++ } ++ } else if (false && chunkEdgeMode == ChunkEdgeMode.LOAD) { ++ // TODO Note: These should be asynchronous loads; however we have no such thing in 1.14. ++ boolean missingChunk = false; ++ //noinspection ConstantConditions ++ /* ++ missingChunk |= ((WorldServer)chunk.world).getChunkProvider().getChunkAt(chunk.locX - 1, chunk.locZ, true, true, c -> {}) == null; ++ missingChunk |= ((WorldServer)chunk.world).getChunkProvider().getChunkAt(chunk.locX + 1, chunk.locZ, true, true, c -> {}) == null; ++ missingChunk |= ((WorldServer)chunk.world).getChunkProvider().getChunkAt(chunk.locX, chunk.locZ - 1, true, true, c -> {}) == null; ++ missingChunk |= ((WorldServer)chunk.world).getChunkProvider().getChunkAt(chunk.locX, chunk.locZ + 1, true, true, c -> {}) == null; ++ */ ++ if (missingChunk) { ++ return false; ++ } ++ } ++ ++ //Create the chunk packet now ++ return true; ++ } ++ ++ @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 ++ int locX = chunk.getPos().x; ++ int locZ = chunk.getPos().z; ++ ChunkPacketInfoAntiXray chunkPacketInfoAntiXray = new ChunkPacketInfoAntiXray(packetPlayOutMapChunk, chunk, chunkSectionSelector, this); ++ chunkPacketInfoAntiXray.setNearbyChunks((Chunk)chunk.world.getChunkIfLoadedImmediately(locX - 1, locZ), ++ (Chunk)chunk.world.getChunkIfLoadedImmediately(locX + 1, locZ), ++ (Chunk)chunk.world.getChunkIfLoadedImmediately(locX, locZ - 1), ++ (Chunk)chunk.world.getChunkIfLoadedImmediately(locX, locZ + 1)); ++ return chunkPacketInfoAntiXray; ++ } ++ ++ @Override ++ public void modifyBlocks(PacketPlayOutMapChunk packetPlayOutMapChunk, ChunkPacketInfo chunkPacketInfo) { ++ if (asynchronous) { ++ executorService.submit((ChunkPacketInfoAntiXray) chunkPacketInfo); ++ } else { ++ obfuscate((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 ++ private int[] predefinedBlockDataBits; ++ private final boolean[] solid = new boolean[Block.REGISTRY_ID.size()]; ++ private final boolean[] obfuscate = new boolean[Block.REGISTRY_ID.size()]; ++ //These boolean arrays represent chunk layers, true means don't obfuscate, false means obfuscate ++ private boolean[][] current = new boolean[16][16]; ++ private boolean[][] next = new boolean[16][16]; ++ private boolean[][] nextNext = new boolean[16][16]; ++ private final DataBitsReader dataBitsReader = new DataBitsReader(); ++ private final DataBitsWriter dataBitsWriter = new DataBitsWriter(); ++ private final ChunkSection[] nearbyChunkSections = new ChunkSection[4]; ++ ++ public void obfuscate(ChunkPacketInfoAntiXray chunkPacketInfoAntiXray) { ++ boolean[] solidTemp = null; ++ boolean[] obfuscateTemp = null; ++ dataBitsReader.setDataBits(chunkPacketInfoAntiXray.getData()); ++ dataBitsWriter.setDataBits(chunkPacketInfoAntiXray.getData()); ++ int counter = 0; ++ ++ 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 { ++ predefinedBlockDataBitsTemp = predefinedBlockDataBits == null ? predefinedBlockDataBits = engineMode == EngineMode.HIDE ? new int[1] : new int[predefinedBlockData.length] : predefinedBlockDataBits; ++ ++ for (int i = 0; i < predefinedBlockDataBitsTemp.length; i++) { ++ predefinedBlockDataBitsTemp[i] = chunkPacketInfoAntiXray.getDataPalette(chunkSectionIndex).getOrCreateIdFor(chunkPacketInfoAntiXray.getPredefinedObjects(chunkSectionIndex)[i]); ++ } ++ } ++ ++ dataBitsWriter.setIndex(chunkPacketInfoAntiXray.getOrCreateIdForIndex(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.getOrCreateIdForIndex(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, counter); ++ } ++ ++ 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; ++ counter = obfuscateLayer(y, dataBitsReader, dataBitsWriter, solidTemp, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, nearbyChunkSections, counter); ++ } ++ ++ //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; ++ counter = obfuscateLayer(15, dataBitsReader, dataBitsWriter, solid, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, nearbyChunkSections, counter); ++ } ++ } 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.getOrCreateIdForIndex(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; ++ counter = obfuscateLayer(15, dataBitsReader, dataBitsWriter, solidTemp, obfuscateTemp, predefinedBlockDataBitsTemp, current, next, nextNext, nearbyChunkSections, counter); ++ } ++ ++ dataBitsWriter.finish(); ++ } ++ } ++ ++ chunkPacketInfoAntiXray.getPacketPlayOutMapChunk().setReady(true); ++ } ++ ++ private int obfuscateLayer(int y, DataBitsReader dataBitsReader, DataBitsWriter dataBitsWriter, boolean[] solid, boolean[] obfuscate, int[] predefinedBlockDataBits, boolean[][] current, boolean[][] next, boolean[][] nextNext, ChunkSection[] nearbyChunkSections, int counter) { ++ //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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ 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 { ++ if (counter >= predefinedBlockDataBits.length) { ++ counter = 0; ++ } ++ ++ dataBitsWriter.write(predefinedBlockDataBits[counter++]); ++ } ++ } ++ ++ if (!obfuscate[dataBits]) { ++ next[15][15] = true; ++ } ++ ++ return counter; ++ } ++ ++ private boolean[] readDataPalette(DataPalette 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; ++ } ++ } ++ ++ public enum ChunkEdgeMode { ++ ++ DEFAULT(1, "default"), ++ WAIT(2, "wait until nearby chunks are loaded"), ++ LOAD(3, "load nearby chunks"); ++ ++ private final int id; ++ private final String description; ++ ++ ChunkEdgeMode(int id, String description) { ++ this.id = id; ++ this.description = description; ++ } ++ ++ public static ChunkEdgeMode getById(int id) { ++ for (ChunkEdgeMode chunkEdgeMode : values()) { ++ if (chunkEdgeMode.id == id) { ++ return chunkEdgeMode; ++ } ++ } ++ ++ 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 0000000000..a68bace353 +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java +@@ -0,0 +1,81 @@ ++package com.destroystokyo.paper.antixray; ++ ++import net.minecraft.server.Chunk; ++import net.minecraft.server.DataPalette; ++import net.minecraft.server.PacketPlayOutMapChunk; ++ ++public class ChunkPacketInfo { ++ ++ 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 getDataPalette(int chunkSectionIndex) { ++ return (DataPalette) dataPalettes[chunkSectionIndex]; ++ } ++ ++ public void setDataPalette(int chunkSectionIndex, DataPalette dataPalette) { ++ dataPalettes[chunkSectionIndex] = dataPalette; ++ } ++ ++ public int getOrCreateIdForIndex(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 0000000000..e255a45fa3 +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java +@@ -0,0 +1,29 @@ ++package com.destroystokyo.paper.antixray; ++ ++import net.minecraft.server.Chunk; ++import net.minecraft.server.IBlockData; ++import net.minecraft.server.PacketPlayOutMapChunk; ++ ++public class ChunkPacketInfoAntiXray extends ChunkPacketInfo 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 0000000000..cc586827aa +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/DataBitsReader.java +@@ -0,0 +1,56 @@ ++package com.destroystokyo.paper.antixray; ++ ++public 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() { ++ int value = (int) (current >>> bitInLongIndex) & mask; ++ bitInLongIndex += bitsPerObject; ++ ++ if (bitInLongIndex > 63) { ++ bitInLongIndex -= 64; ++ longInDataBitsIndex += 8; ++ init(); ++ ++ if (bitInLongIndex > 0) { ++ value |= current << bitsPerObject - bitInLongIndex & mask; ++ } ++ } ++ ++ 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 0000000000..37093419cf +--- /dev/null ++++ b/src/main/java/com/destroystokyo/paper/antixray/DataBitsWriter.java +@@ -0,0 +1,84 @@ ++package com.destroystokyo.paper.antixray; ++ ++public 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) { ++ current = current & ~(mask << bitInLongIndex) | (value & mask) << bitInLongIndex; ++ dirty = true; ++ bitInLongIndex += bitsPerObject; ++ ++ if (bitInLongIndex > 63) { ++ finish(); ++ bitInLongIndex -= 64; ++ longInDataBitsIndex += 8; ++ init(); ++ ++ if (bitInLongIndex > 0) { ++ current = current & ~(mask >>> bitsPerObject - bitInLongIndex) | (value & mask) >>> bitsPerObject - bitInLongIndex; ++ dirty = true; ++ } ++ } ++ } ++ ++ public void skip() { ++ bitInLongIndex += bitsPerObject; ++ ++ if (bitInLongIndex > 63) { ++ finish(); ++ bitInLongIndex -= 64; ++ longInDataBitsIndex += 8; ++ init(); ++ } ++ } ++} +diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java +index e2a48695df..d19412f186 100644 +--- a/src/main/java/net/minecraft/server/Chunk.java ++++ b/src/main/java/net/minecraft/server/Chunk.java +@@ -315,7 +315,7 @@ 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 + this.sections[j >> 4] = chunksection; + } + +diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java +index 287f113581..f88e3d957f 100644 +--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java ++++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java +@@ -74,7 +74,7 @@ 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 + + chunksection.getBlocks().a(nbttagcompound2.getList("Palette", 10), nbttagcompound2.getLongArray("BlockStates")); + chunksection.recalcBlockCounts(); +@@ -132,7 +132,7 @@ public class ChunkRegionLoader { + loadEntities(nbttagcompound1, chunk); + }); + } else { +- ProtoChunk protochunk = new ProtoChunk(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1); ++ ProtoChunk protochunk = new ProtoChunk(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, worldserver); // Paper - Anti-Xray + + object = protochunk; + protochunk.a(abiomebase); +diff --git a/src/main/java/net/minecraft/server/ChunkSection.java b/src/main/java/net/minecraft/server/ChunkSection.java +index c4c181c1d5..d6b327eff2 100644 +--- a/src/main/java/net/minecraft/server/ChunkSection.java ++++ b/src/main/java/net/minecraft/server/ChunkSection.java +@@ -6,21 +6,31 @@ public class ChunkSection { + + public static final DataPalette GLOBAL_PALETTE = new DataPaletteGlobal<>(Block.REGISTRY_ID, Blocks.AIR.getBlockData()); + private final int yPos; +- private short nonEmptyBlockCount; ++ short nonEmptyBlockCount; // Paper - private -> package-private + private short tickingBlockCount; + private short e; + final DataPaletteBlock blockIds; // Paper - package + + public ChunkSection(int i) { +- this(i, (short) 0, (short) 0, (short) 0); ++ // Paper start - add parameters ++ this(i, (IChunkAccess)null, (IWorldReader)null, true); ++ } ++ public ChunkSection(int i, IChunkAccess chunk, IWorldReader 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 - add parameters ++ this(i, short0, short1, short2, (IChunkAccess)null, (IWorldReader)null, true); ++ } ++ public ChunkSection(int i, short short0, short short1, short short2, IChunkAccess chunk, IWorldReader 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::d, GameProfileSerializer::a, Blocks.AIR.getBlockData()); ++ this.blockIds = new DataPaletteBlock<>(ChunkSection.GLOBAL_PALETTE, Block.REGISTRY_ID, GameProfileSerializer::d, GameProfileSerializer::a, Blocks.AIR.getBlockData(), world instanceof GeneratorAccess ? ((GeneratorAccess) world).getMinecraftWorld().chunkPacketBlockController.getPredefinedBlockData(world, chunk, this, initializeBlocks) : null, initializeBlocks); // Paper - Anti-Xray - Add predefined block data + } + + public IBlockData getType(int i, int j, int k) { +diff --git a/src/main/java/net/minecraft/server/DataPaletteBlock.java b/src/main/java/net/minecraft/server/DataPaletteBlock.java +index e05b9d606a..cbc9dc902e 100644 +--- a/src/main/java/net/minecraft/server/DataPaletteBlock.java ++++ b/src/main/java/net/minecraft/server/DataPaletteBlock.java +@@ -1,5 +1,6 @@ + package net.minecraft.server; + ++import com.destroystokyo.paper.antixray.ChunkPacketInfo; // Paper - Anti-Xray + import java.util.Arrays; + import java.util.Objects; + import java.util.concurrent.locks.ReentrantLock; +@@ -16,6 +17,7 @@ public class DataPaletteBlock implements DataPaletteExpandable { + private final Function e; + private final Function f; + private final T g; ++ private final T[] predefinedObjects; // Paper - Anti-Xray - Add predefined objects + protected DataBits a; protected DataBits getDataBits() { return this.a; } // Paper - OBFHELPER + private DataPalette h; private DataPalette getDataPalette() { return this.h; } // Paper - OBFHELPER + private int i; private int getBitsPerObject() { return this.i; } // Paper - OBFHELPER +@@ -44,14 +46,50 @@ public class DataPaletteBlock implements DataPaletteExpandable { + } + + public DataPaletteBlock(DataPalette datapalette, RegistryBlockID registryblockid, Function function, Function function1, T t0) { ++ // Paper start - Anti-Xray - Support default constructor ++ this(datapalette, registryblockid, function, function1, t0, null, true); ++ } ++ ++ public DataPaletteBlock(DataPalette datapalette, RegistryBlockID registryblockid, Function function, Function function1, T t0, T[] predefinedObjects, boolean initialize) { ++ // Paper end - Anti-Xray - Add predefined objects + 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; + } +@@ -85,6 +123,7 @@ public class DataPaletteBlock implements DataPaletteExpandable { + + int j; + ++ this.addPredefinedObjects(); // Paper - Anti-Xray - Add predefined objects + for (j = 0; j < databits.b(); ++j) { + T t1 = datapalette.a(databits.a(j)); + +@@ -136,22 +175,39 @@ public class DataPaletteBlock implements DataPaletteExpandable { + + public void writeDataPaletteBlock(PacketDataSerializer packetDataSerializer) { this.b(packetDataSerializer); } // Paper - OBFHELPER + public void b(PacketDataSerializer packetdataserializer) { ++ // Paper start - add parameters ++ this.writeDataPaletteBlock(packetdataserializer, null, 0); ++ } ++ public void writeDataPaletteBlock(PacketDataSerializer packetdataserializer, ChunkPacketInfo chunkPacketInfo, int chunkSectionIndex) { ++ // 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 void a(NBTTagList nbttaglist, long[] along) { + this.a(); +- int i = Math.max(4, MathHelper.d(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.d(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/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java +index ba23d28335..8dcaaf8676 100644 +--- a/src/main/java/net/minecraft/server/NetworkManager.java ++++ b/src/main/java/net/minecraft/server/NetworkManager.java +@@ -166,8 +166,8 @@ public class NetworkManager extends SimpleChannelInboundHandler> { + } + + public void sendPacket(Packet packet, @Nullable GenericFutureListener> genericfuturelistener) { +- if (this.isConnected()) { +- this.o(); ++ if (this.isConnected() && this.sendPacketQueue() && !(packet instanceof PacketPlayOutMapChunk && !((PacketPlayOutMapChunk) packet).isReady())) { // Paper - Async-Anti-Xray - Add chunk packets which are not ready or all packets if the packet queue contains chunk packets which are not ready to the packet queue and send the packets later in the right order ++ //this.o(); // Paper - Async-Anti-Xray - Move to if statement (this.sendPacketQueue()) + this.b(packet, genericfuturelistener); + } else { + this.j.writeLock().lock(); +@@ -231,23 +231,38 @@ public class NetworkManager extends SimpleChannelInboundHandler> { + + } + +- private void sendPacketQueue() { this.o(); } // Paper - OBFHELPER +- private void o() { ++ // Paper start - Async-Anti-Xray - Stop dispatching further packets and return false if the peeked packet is a chunk packet which is not ready ++ private boolean sendPacketQueue() { return this.o(); } // OBFHELPER // void -> boolean ++ private boolean o() { // void -> boolean + if (this.channel != null && this.channel.isOpen()) { +- this.j.readLock().lock(); ++ if (this.packetQueue.isEmpty()) { // return if the packet queue is empty so that the write lock by Anti-Xray doesn't affect the vanilla performance at all ++ return true; ++ } ++ ++ this.j.writeLock().lock(); // readLock -> writeLock (because of race condition between peek and poll) + + try { + while (!this.packetQueue.isEmpty()) { +- NetworkManager.QueuedPacket networkmanager_queuedpacket = (NetworkManager.QueuedPacket) this.packetQueue.poll(); +- +- this.b(networkmanager_queuedpacket.a, networkmanager_queuedpacket.b); ++ NetworkManager.QueuedPacket networkmanager_queuedpacket = (NetworkManager.QueuedPacket) this.getPacketQueue().peek(); // poll -> peek ++ ++ if (networkmanager_queuedpacket != null) { // Fix NPE (Spigot bug caused by handleDisconnection()) ++ if (networkmanager_queuedpacket.getPacket() instanceof PacketPlayOutMapChunk && !((PacketPlayOutMapChunk) networkmanager_queuedpacket.getPacket()).isReady()) { // Check if the peeked packet is a chunk packet which is not ready ++ return false; // Return false if the peeked packet is a chunk packet which is not ready ++ } else { ++ this.getPacketQueue().poll(); // poll here ++ this.dispatchPacket(networkmanager_queuedpacket.getPacket(), networkmanager_queuedpacket.getGenericFutureListener()); // dispatch the packet ++ } ++ } + } + } finally { +- this.j.readLock().unlock(); ++ this.j.writeLock().unlock(); // readLock -> writeLock (because of race condition between peek and poll) + } + + } ++ ++ return true; // Return true if all packets were dispatched + } ++ // Paper end + + public void a() { + this.o(); +diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java +index ef71a1feb3..316fb7cc3c 100644 +--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java ++++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java +@@ -1,5 +1,6 @@ + package net.minecraft.server; + ++import com.destroystokyo.paper.antixray.ChunkPacketInfo; // Paper - Anti-Xray + import com.google.common.collect.Lists; + import io.netty.buffer.ByteBuf; + import io.netty.buffer.Unpooled; +@@ -17,8 +18,11 @@ public class PacketPlayOutMapChunk implements Packet { + private byte[] e; private byte[] getData() { return this.e; } // Paper - OBFHELPER + private List f; + private boolean g; ++ private volatile boolean ready; // Paper - Async-Anti-Xray - Ready flag for the network manager + +- public PacketPlayOutMapChunk() {} ++ public PacketPlayOutMapChunk() { ++ this.ready = true; // Paper - Async-Anti-Xray - Set the ready flag to true ++ } + + // Paper start + private final java.util.List extraPackets = new java.util.ArrayList<>(); +@@ -30,6 +34,7 @@ public class PacketPlayOutMapChunk implements Packet { + } + // Paper end + public PacketPlayOutMapChunk(Chunk chunk, int i) { ++ ChunkPacketInfo chunkPacketInfo = chunk.world.chunkPacketBlockController.getChunkPacketInfo(this, chunk, i); // Paper - Anti-Xray - Add chunk packet info + ChunkCoordIntPair chunkcoordintpair = chunk.getPos(); + + this.a = chunkcoordintpair.x; +@@ -48,7 +53,12 @@ public class PacketPlayOutMapChunk implements Packet { + } + + this.e = new byte[this.a(chunk, i)]; +- this.c = this.a(new PacketDataSerializer(this.i()), chunk, i); ++ // Paper start - Anti-Xray - Add chunk packet info ++ if (chunkPacketInfo != null) { ++ chunkPacketInfo.setData(this.getData()); ++ } ++ // Paper end ++ this.c = this.writeChunk(new PacketDataSerializer(this.i()), chunk, i, chunkPacketInfo); // Paper - Anti-Xray - Add chunk packet info + this.f = Lists.newArrayList(); + iterator = chunk.getTileEntities().entrySet().iterator(); + int totalSigns = 0; // Paper +@@ -74,9 +84,19 @@ public class PacketPlayOutMapChunk implements Packet { + this.f.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 ++ public boolean isReady() { ++ return this.ready; + } + ++ public void setReady(boolean ready) { ++ this.ready = ready; ++ } ++ // Paper end ++ + @Override + public void a(PacketDataSerializer packetdataserializer) throws IOException { + this.a = packetdataserializer.readInt(); +@@ -135,6 +155,11 @@ public class PacketPlayOutMapChunk implements Packet { + + 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 - Add parameter ++ return this.writeChunk(packetdataserializer, chunk, i, null); ++ } ++ public int writeChunk(PacketDataSerializer packetdataserializer, Chunk chunk, int i, ChunkPacketInfo chunkPacketInfo) { ++ // Paper end + int j = 0; + ChunkSection[] achunksection = chunk.getSections(); + int k = 0; +@@ -146,7 +171,8 @@ public class PacketPlayOutMapChunk implements Packet { + + if (chunksection != Chunk.a && (!this.f() || !chunksection.c()) && (i & 1 << k) != 0) { + j |= 1 << k; +- chunksection.b(packetdataserializer); ++ packetdataserializer.writeShort(chunksection.nonEmptyBlockCount); // Paper - Anti-Xray - Add chunk packet info ++ chunksection.getBlocks().writeDataPaletteBlock(packetdataserializer, chunkPacketInfo, k); // Paper - Anti-Xray - Add chunk packet info + } + } + +diff --git a/src/main/java/net/minecraft/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java +index 761cd1355b..cb3363a01e 100644 +--- a/src/main/java/net/minecraft/server/PlayerChunk.java ++++ b/src/main/java/net/minecraft/server/PlayerChunk.java +@@ -150,6 +150,9 @@ public class PlayerChunk { + } + + public void a(Chunk chunk) { ++ if (!chunk.world.chunkPacketBlockController.onChunkPacketCreate(chunk, '\uffff', false)) { // Paper - Anti-Xray - Load nearby chunks if necessary ++ return; ++ } + if (this.dirtyCount != 0 || this.u != 0 || this.t != 0) { + World world = chunk.getWorld(); + +diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java +index 8e16d6ac87..5e0c73ece6 100644 +--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java ++++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java +@@ -491,7 +491,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { + PlayerChunkMap.LOGGER.error("Couldn't load chunk {}", chunkcoordintpair, exception); + } + +- return Either.left(new ProtoChunk(chunkcoordintpair, ChunkConverter.a)); ++ return Either.left(new ProtoChunk(chunkcoordintpair, ChunkConverter.a, this.world)); // Paper - Anti-Xray + }, this.executor); + } + +@@ -1111,6 +1111,8 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { + + private void a(EntityPlayer entityplayer, Packet[] apacket, Chunk chunk) { + if (apacket[0] == null) { ++ // Note that this is ALWAYS the case as of 1.14 (at least once). re-check on update ++ chunk.world.chunkPacketBlockController.onChunkPacketCreate(chunk, '\uffff', true); // Paper - Anti-Xray - Load nearby chunks if necessary + apacket[0] = new PacketPlayOutMapChunk(chunk, 65535); + apacket[1] = new PacketPlayOutLightUpdate(chunk.getPos(), this.lightEngine); + } +diff --git a/src/main/java/net/minecraft/server/PlayerInteractManager.java b/src/main/java/net/minecraft/server/PlayerInteractManager.java +index 83b36b3e7f..8fef6008d1 100644 +--- a/src/main/java/net/minecraft/server/PlayerInteractManager.java ++++ b/src/main/java/net/minecraft/server/PlayerInteractManager.java +@@ -207,6 +207,8 @@ public class PlayerInteractManager { + } + + } ++ ++ this.world.chunkPacketBlockController.onPlayerLeftClickBlock(this, blockposition, enumdirection); // Paper - Anti-Xray + } + + public void a(BlockPosition blockposition) { +diff --git a/src/main/java/net/minecraft/server/ProtoChunk.java b/src/main/java/net/minecraft/server/ProtoChunk.java +index 6bdd7dda04..7bad12eb00 100644 +--- a/src/main/java/net/minecraft/server/ProtoChunk.java ++++ b/src/main/java/net/minecraft/server/ProtoChunk.java +@@ -44,16 +44,28 @@ public class ProtoChunk implements IChunkAccess { + private long s; + private final Map t; + private volatile boolean u; ++ private final GeneratorAccess world; // Paper - Anti-Xray + + public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter) { ++ // Paper start - add world parameter ++ this(chunkcoordintpair, chunkconverter, (GeneratorAccess)null); ++ } ++ public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, GeneratorAccess 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 - add world parameter + } + + public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, @Nullable ChunkSection[] achunksection, ProtoChunkTickList protochunkticklist, ProtoChunkTickList protochunkticklist1) { ++ // Paper start - add world parameter ++ this(chunkcoordintpair, chunkconverter, achunksection, protochunkticklist, protochunkticklist1, (GeneratorAccess)null); ++ } ++ public ProtoChunk(ChunkCoordIntPair chunkcoordintpair, ChunkConverter chunkconverter, @Nullable ChunkSection[] achunksection, ProtoChunkTickList protochunkticklist, ProtoChunkTickList protochunkticklist1, GeneratorAccess world) { ++ this.world = world; ++ // Paper end + this.f = Maps.newEnumMap(HeightMap.Type.class); + this.g = ChunkStatus.EMPTY; + this.h = Maps.newHashMap(); +@@ -206,7 +218,7 @@ 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 + } + + return this.j[i]; +diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java +index a7a35d6a6f..ff64089857 100644 +--- a/src/main/java/net/minecraft/server/World.java ++++ b/src/main/java/net/minecraft/server/World.java +@@ -2,6 +2,8 @@ package net.minecraft.server; + + 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; +@@ -93,6 +95,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose + 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 +@@ -134,6 +137,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose + protected World(WorldData worlddata, DimensionManager dimensionmanager, BiFunction bifunction, GameProfilerFiller gameprofilerfiller, boolean flag, org.bukkit.generator.ChunkGenerator gen, org.bukkit.World.Environment env) { + this.spigotConfig = new org.spigotmc.SpigotWorldConfig( worlddata.getName() ); // Spigot + this.paperConfig = new com.destroystokyo.paper.PaperWorldConfig(worlddata.getName(), this.spigotConfig); // Paper ++ this.chunkPacketBlockController = this.paperConfig.antiXray ? new ChunkPacketBlockControllerAntiXray(this.paperConfig) : ChunkPacketBlockController.NO_OPERATION_INSTANCE; // Paper - Anti-Xray + this.generator = gen; + this.world = new CraftWorld((WorldServer) this, gen, env); + this.ticksPerAnimalSpawns = this.getServer().getTicksPerAnimalSpawns(); // CraftBukkit +@@ -414,6 +418,7 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose + // 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 +diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftChunkData.java +index 7772d59005..4570ed9991 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 tiles; ++ private World world; // Paper - Anti-Xray + + public CraftChunkData(World world) { + this(world.getMaxHeight()); ++ this.world = world; // Paper - Anti-Xray + } + + /* 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); ++ sections[y >> 4] = section = new ChunkSection(y, null, world instanceof org.bukkit.craftbukkit.CraftWorld ? ((org.bukkit.craftbukkit.CraftWorld) world).getHandle() : null, true); // Paper - Anti-Xray + } + return section; + } +-- +2.21.0 +