From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: stonar96 Date: Thu, 25 Nov 2021 13:27:51 +0100 Subject: [PATCH] Anti-Xray diff --git a/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java b/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java new file mode 100644 index 0000000000000000000000000000000000000000..e448c26327b5f6189c3c52e698cff66c8f9ad81a --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/antixray/BitStorageReader.java @@ -0,0 +1,51 @@ +package com.destroystokyo.paper.antixray; + +public final class BitStorageReader { + + private byte[] buffer; + private int bits; + private int mask; + private int longInBufferIndex; + private int bitInLongIndex; + private long current; + + public void setBuffer(byte[] buffer) { + this.buffer = buffer; + } + + public void setBits(int bits) { + this.bits = bits; + mask = (1 << bits) - 1; + } + + public void setIndex(int index) { + longInBufferIndex = index; + bitInLongIndex = 0; + init(); + } + + private void init() { + if (buffer.length > longInBufferIndex + 7) { + current = ((((long) buffer[longInBufferIndex]) << 56) + | (((long) buffer[longInBufferIndex + 1] & 0xff) << 48) + | (((long) buffer[longInBufferIndex + 2] & 0xff) << 40) + | (((long) buffer[longInBufferIndex + 3] & 0xff) << 32) + | (((long) buffer[longInBufferIndex + 4] & 0xff) << 24) + | (((long) buffer[longInBufferIndex + 5] & 0xff) << 16) + | (((long) buffer[longInBufferIndex + 6] & 0xff) << 8) + | (((long) buffer[longInBufferIndex + 7] & 0xff))); + } + } + + public int read() { + if (bitInLongIndex + bits > 64) { + bitInLongIndex = 0; + longInBufferIndex += 8; + init(); + } + + int value = (int) (current >>> bitInLongIndex) & mask; + bitInLongIndex += bits; + return value; + } +} diff --git a/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java b/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java new file mode 100644 index 0000000000000000000000000000000000000000..e4540ea278f2dc871cb6a3cb8897559bfd65e134 --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/antixray/BitStorageWriter.java @@ -0,0 +1,79 @@ +package com.destroystokyo.paper.antixray; + +public final class BitStorageWriter { + + private byte[] buffer; + private int bits; + private long mask; + private int longInBufferIndex; + private int bitInLongIndex; + private long current; + private boolean dirty; + + public void setBuffer(byte[] buffer) { + this.buffer = buffer; + } + + public void setBits(int bits) { + this.bits = bits; + mask = (1L << bits) - 1; + } + + public void setIndex(int index) { + longInBufferIndex = index; + bitInLongIndex = 0; + init(); + } + + private void init() { + if (buffer.length > longInBufferIndex + 7) { + current = ((((long) buffer[longInBufferIndex]) << 56) + | (((long) buffer[longInBufferIndex + 1] & 0xff) << 48) + | (((long) buffer[longInBufferIndex + 2] & 0xff) << 40) + | (((long) buffer[longInBufferIndex + 3] & 0xff) << 32) + | (((long) buffer[longInBufferIndex + 4] & 0xff) << 24) + | (((long) buffer[longInBufferIndex + 5] & 0xff) << 16) + | (((long) buffer[longInBufferIndex + 6] & 0xff) << 8) + | (((long) buffer[longInBufferIndex + 7] & 0xff))); + } + + dirty = false; + } + + public void flush() { + if (dirty && buffer.length > longInBufferIndex + 7) { + buffer[longInBufferIndex] = (byte) (current >> 56 & 0xff); + buffer[longInBufferIndex + 1] = (byte) (current >> 48 & 0xff); + buffer[longInBufferIndex + 2] = (byte) (current >> 40 & 0xff); + buffer[longInBufferIndex + 3] = (byte) (current >> 32 & 0xff); + buffer[longInBufferIndex + 4] = (byte) (current >> 24 & 0xff); + buffer[longInBufferIndex + 5] = (byte) (current >> 16 & 0xff); + buffer[longInBufferIndex + 6] = (byte) (current >> 8 & 0xff); + buffer[longInBufferIndex + 7] = (byte) (current & 0xff); + } + } + + public void write(int value) { + if (bitInLongIndex + bits > 64) { + flush(); + bitInLongIndex = 0; + longInBufferIndex += 8; + init(); + } + + current = current & ~(mask << bitInLongIndex) | (value & mask) << bitInLongIndex; + dirty = true; + bitInLongIndex += bits; + } + + public void skip() { + bitInLongIndex += bits; + + if (bitInLongIndex > 64) { + flush(); + bitInLongIndex = bits; + longInBufferIndex += 8; + init(); + } + } +} diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockController.java new file mode 100644 index 0000000000000000000000000000000000000000..52d2e2b744f91914802506e52a07161729bbcf3a --- /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.BlockPos; +import net.minecraft.core.Direction; +import net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket; +import net.minecraft.network.protocol.game.ServerboundPlayerActionPacket; +import net.minecraft.server.level.ServerPlayer; +import net.minecraft.server.level.ServerPlayerGameMode; +import net.minecraft.world.level.ChunkPos; +import net.minecraft.world.level.Level; +import net.minecraft.world.level.block.state.BlockState; +import net.minecraft.world.level.chunk.LevelChunk; + +public class ChunkPacketBlockController { + + public static final ChunkPacketBlockController NO_OPERATION_INSTANCE = new ChunkPacketBlockController(); + + protected ChunkPacketBlockController() { + + } + + public BlockState[] getPresetBlockStates(Level level, ChunkPos chunkPos, int chunkSectionY) { + return null; + } + + public boolean shouldModify(ServerPlayer player, LevelChunk chunk) { + return false; + } + + public ChunkPacketInfo getChunkPacketInfo(ClientboundLevelChunkWithLightPacket chunkPacket, LevelChunk chunk) { + return null; + } + + public void modifyBlocks(ClientboundLevelChunkWithLightPacket chunkPacket, ChunkPacketInfo chunkPacketInfo) { + chunkPacket.setReady(true); + } + + public void onBlockChange(Level level, BlockPos blockPos, BlockState newBlockState, BlockState oldBlockState, int flags, int maxUpdateDepth) { + + } + + public void onPlayerLeftClickBlock(ServerPlayerGameMode serverPlayerGameMode, BlockPos blockPos, ServerboundPlayerActionPacket.Action action, Direction direction, int worldHeight, int sequence) { + + } +} 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..4b44053cf7704e3889440361bb4971d7aa03e3ba --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketBlockControllerAntiXray.java @@ -0,0 +1,676 @@ +package com.destroystokyo.paper.antixray; + +import io.papermc.paper.configuration.WorldConfiguration; +import io.papermc.paper.configuration.type.EngineMode; +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.BlockPos; +import net.minecraft.core.Direction; +import net.minecraft.core.registries.Registries; +import net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket; +import net.minecraft.network.protocol.game.ServerboundPlayerActionPacket; +import net.minecraft.server.MinecraftServer; +import net.minecraft.server.level.ServerLevel; +import net.minecraft.server.level.ServerPlayer; +import net.minecraft.server.level.ServerPlayerGameMode; +import net.minecraft.world.level.ChunkPos; +import net.minecraft.world.level.Level; +import net.minecraft.world.level.biome.Biomes; +import net.minecraft.world.level.block.Block; +import net.minecraft.world.level.block.Blocks; +import net.minecraft.world.level.block.EntityBlock; +import net.minecraft.world.level.block.state.BlockState; +import net.minecraft.world.level.chunk.EmptyLevelChunk; +import net.minecraft.world.level.chunk.GlobalPalette; +import net.minecraft.world.level.chunk.LevelChunk; +import net.minecraft.world.level.chunk.LevelChunkSection; +import net.minecraft.world.level.chunk.MissingPaletteEntryException; +import net.minecraft.world.level.chunk.Palette; +import org.bukkit.Bukkit; + +public final class ChunkPacketBlockControllerAntiXray extends ChunkPacketBlockController { + + private static final Palette GLOBAL_BLOCKSTATE_PALETTE = new GlobalPalette<>(Block.BLOCK_STATE_REGISTRY); + private static final LevelChunkSection EMPTY_SECTION = null; + private final Executor executor; + private final EngineMode engineMode; + private final int maxBlockHeight; + private final int updateRadius; + private final boolean usePermission; + private final BlockState[] presetBlockStates; + private final BlockState[] presetBlockStatesFull; + private final BlockState[] presetBlockStatesStone; + private final BlockState[] presetBlockStatesDeepslate; + private final BlockState[] presetBlockStatesNetherrack; + private final BlockState[] presetBlockStatesEndStone; + private final int[] presetBlockStateBitsGlobal; + private final int[] presetBlockStateBitsStoneGlobal; + private final int[] presetBlockStateBitsDeepslateGlobal; + private final int[] presetBlockStateBitsNetherrackGlobal; + private final int[] presetBlockStateBitsEndStoneGlobal; + private final boolean[] solidGlobal = new boolean[Block.BLOCK_STATE_REGISTRY.size()]; + private final boolean[] obfuscateGlobal = new boolean[Block.BLOCK_STATE_REGISTRY.size()]; + private final LevelChunkSection[] emptyNearbyChunkSections = {EMPTY_SECTION, EMPTY_SECTION, EMPTY_SECTION, EMPTY_SECTION}; + private final int maxBlockHeightUpdatePosition; + + public ChunkPacketBlockControllerAntiXray(Level level, Executor executor) { + this.executor = executor; + WorldConfiguration.Anticheat.AntiXray paperWorldConfig = level.paperConfig().anticheat.antiXray; + engineMode = paperWorldConfig.engineMode; + maxBlockHeight = paperWorldConfig.maxBlockHeight >> 4 << 4; + updateRadius = paperWorldConfig.updateRadius; + usePermission = paperWorldConfig.usePermission; + List toObfuscate; + + if (engineMode == EngineMode.HIDE) { + toObfuscate = paperWorldConfig.hiddenBlocks; + presetBlockStates = null; + presetBlockStatesFull = null; + presetBlockStatesStone = new BlockState[]{Blocks.STONE.defaultBlockState()}; + presetBlockStatesDeepslate = new BlockState[]{Blocks.DEEPSLATE.defaultBlockState()}; + presetBlockStatesNetherrack = new BlockState[]{Blocks.NETHERRACK.defaultBlockState()}; + presetBlockStatesEndStone = new BlockState[]{Blocks.END_STONE.defaultBlockState()}; + presetBlockStateBitsGlobal = null; + presetBlockStateBitsStoneGlobal = new int[]{GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.STONE.defaultBlockState())}; + presetBlockStateBitsDeepslateGlobal = new int[]{GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.DEEPSLATE.defaultBlockState())}; + presetBlockStateBitsNetherrackGlobal = new int[]{GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.NETHERRACK.defaultBlockState())}; + presetBlockStateBitsEndStoneGlobal = new int[]{GLOBAL_BLOCKSTATE_PALETTE.idFor(Blocks.END_STONE.defaultBlockState())}; + } else { + toObfuscate = new ArrayList<>(paperWorldConfig.replacementBlocks); + List presetBlockStateList = new LinkedList<>(); + + for (Block block : paperWorldConfig.hiddenBlocks) { + + if (!(block instanceof EntityBlock)) { + toObfuscate.add(block); + presetBlockStateList.add(block.defaultBlockState()); + } + } + + // The doc of the LinkedHashSet(Collection) constructor doesn't specify that the insertion order is the predictable iteration order of the specified Collection, although it is in the implementation + Set presetBlockStateSet = new LinkedHashSet<>(); + // Therefore addAll(Collection) is used, which guarantees this order in the doc + presetBlockStateSet.addAll(presetBlockStateList); + presetBlockStates = presetBlockStateSet.isEmpty() ? new BlockState[]{Blocks.DIAMOND_ORE.defaultBlockState()} : presetBlockStateSet.toArray(new BlockState[0]); + presetBlockStatesFull = presetBlockStateSet.isEmpty() ? new BlockState[]{Blocks.DIAMOND_ORE.defaultBlockState()} : presetBlockStateList.toArray(new BlockState[0]); + presetBlockStatesStone = null; + presetBlockStatesDeepslate = null; + presetBlockStatesNetherrack = null; + presetBlockStatesEndStone = null; + presetBlockStateBitsGlobal = new int[presetBlockStatesFull.length]; + + for (int i = 0; i < presetBlockStatesFull.length; i++) { + presetBlockStateBitsGlobal[i] = GLOBAL_BLOCKSTATE_PALETTE.idFor(presetBlockStatesFull[i]); + } + + presetBlockStateBitsStoneGlobal = null; + presetBlockStateBitsDeepslateGlobal = null; + presetBlockStateBitsNetherrackGlobal = null; + presetBlockStateBitsEndStoneGlobal = null; + } + + for (Block block : toObfuscate) { + + // Don't obfuscate air because air causes unnecessary block updates and causes block updates to fail in the void + if (block != null && !block.defaultBlockState().isAir()) { + // Replace all block states of a specified block + for (BlockState blockState : block.getStateDefinition().getPossibleStates()) { + obfuscateGlobal[GLOBAL_BLOCKSTATE_PALETTE.idFor(blockState)] = true; + } + } + } + + EmptyLevelChunk emptyChunk = new EmptyLevelChunk(level, new ChunkPos(0, 0), MinecraftServer.getServer().registryAccess().lookupOrThrow(Registries.BIOME).getOrThrow(Biomes.PLAINS)); + BlockPos zeroPos = new BlockPos(0, 0, 0); + + for (int i = 0; i < solidGlobal.length; i++) { + BlockState blockState = GLOBAL_BLOCKSTATE_PALETTE.valueFor(i); + + if (blockState != null) { + solidGlobal[i] = blockState.isRedstoneConductor(emptyChunk, zeroPos) + && blockState.getBlock() != Blocks.SPAWNER && blockState.getBlock() != Blocks.BARRIER && blockState.getBlock() != Blocks.SHULKER_BOX && blockState.getBlock() != Blocks.SLIME_BLOCK && blockState.getBlock() != Blocks.MANGROVE_ROOTS || paperWorldConfig.lavaObscures && blockState == Blocks.LAVA.defaultBlockState(); + // Comparing blockState == Blocks.LAVA.defaultBlockState() instead of blockState.getBlock() == Blocks.LAVA ensures that only "stationary lava" is used + // shulker box checks TE. + } + } + + maxBlockHeightUpdatePosition = maxBlockHeight + updateRadius - 1; + } + + private int getPresetBlockStatesFullLength() { + return engineMode == EngineMode.HIDE ? 1 : presetBlockStatesFull.length; + } + + @Override + public BlockState[] getPresetBlockStates(Level level, ChunkPos chunkPos, int chunkSectionY) { + // Return the block states to be added to the paletted containers so that they can be used for obfuscation + int bottomBlockY = chunkSectionY << 4; + + if (bottomBlockY < maxBlockHeight) { + if (engineMode == EngineMode.HIDE) { + return switch (level.getWorld().getEnvironment()) { + case NETHER -> presetBlockStatesNetherrack; + case THE_END -> presetBlockStatesEndStone; + default -> bottomBlockY < 0 ? presetBlockStatesDeepslate : presetBlockStatesStone; + }; + } + + return presetBlockStates; + } + + return null; + } + + @Override + public boolean shouldModify(ServerPlayer player, LevelChunk chunk) { + return !usePermission || !player.getBukkitEntity().hasPermission("paper.antixray.bypass"); + } + + @Override + public ChunkPacketInfoAntiXray getChunkPacketInfo(ClientboundLevelChunkWithLightPacket chunkPacket, LevelChunk chunk) { + // Return a new instance to collect data and objects in the right state while creating the chunk packet for thread safe access later + return new ChunkPacketInfoAntiXray(chunkPacket, chunk, this); + } + + @Override + public void modifyBlocks(ClientboundLevelChunkWithLightPacket chunkPacket, ChunkPacketInfo chunkPacketInfo) { + if (!(chunkPacketInfo instanceof ChunkPacketInfoAntiXray)) { + chunkPacket.setReady(true); + return; + } + + if (!Bukkit.isPrimaryThread()) { + // Plugins? + MinecraftServer.getServer().scheduleOnMain(() -> modifyBlocks(chunkPacket, chunkPacketInfo)); + return; + } + + LevelChunk chunk = chunkPacketInfo.getChunk(); + int x = chunk.getPos().x; + int z = chunk.getPos().z; + Level level = chunk.getLevel(); + ((ChunkPacketInfoAntiXray) chunkPacketInfo).setNearbyChunks(level.getChunkIfLoaded(x - 1, z), level.getChunkIfLoaded(x + 1, z), level.getChunkIfLoaded(x, z - 1), level.getChunkIfLoaded(x, z + 1)); + executor.execute((Runnable) chunkPacketInfo); + } + + // Actually these fields should be variables inside the obfuscate method but in sync mode or with SingleThreadExecutor in async mode it's okay (even without ThreadLocal) + // If an ExecutorService with multiple threads is used, ThreadLocal must be used here + private final ThreadLocal presetBlockStateBits = ThreadLocal.withInitial(() -> new int[getPresetBlockStatesFullLength()]); + private static final ThreadLocal SOLID = ThreadLocal.withInitial(() -> new boolean[Block.BLOCK_STATE_REGISTRY.size()]); + private static final ThreadLocal OBFUSCATE = ThreadLocal.withInitial(() -> new boolean[Block.BLOCK_STATE_REGISTRY.size()]); + // These boolean arrays represent chunk layers, true means don't obfuscate, false means obfuscate + private static final ThreadLocal CURRENT = ThreadLocal.withInitial(() -> new boolean[16][16]); + private static final ThreadLocal NEXT = ThreadLocal.withInitial(() -> new boolean[16][16]); + private static final ThreadLocal NEXT_NEXT = ThreadLocal.withInitial(() -> new boolean[16][16]); + + public void obfuscate(ChunkPacketInfoAntiXray chunkPacketInfoAntiXray) { + int[] presetBlockStateBits = this.presetBlockStateBits.get(); + boolean[] solid = SOLID.get(); + boolean[] obfuscate = OBFUSCATE.get(); + boolean[][] current = CURRENT.get(); + boolean[][] next = NEXT.get(); + boolean[][] nextNext = NEXT_NEXT.get(); + // bitStorageReader, bitStorageWriter and nearbyChunkSections could also be reused (with ThreadLocal if necessary) but it's not worth it + BitStorageReader bitStorageReader = new BitStorageReader(); + BitStorageWriter bitStorageWriter = new BitStorageWriter(); + LevelChunkSection[] nearbyChunkSections = new LevelChunkSection[4]; + LevelChunk chunk = chunkPacketInfoAntiXray.getChunk(); + Level level = chunk.getLevel(); + int maxChunkSectionIndex = Math.min((maxBlockHeight >> 4) - chunk.getMinSectionY(), chunk.getSectionsCount()) - 1; + boolean[] solidTemp = null; + boolean[] obfuscateTemp = null; + bitStorageReader.setBuffer(chunkPacketInfoAntiXray.getBuffer()); + bitStorageWriter.setBuffer(chunkPacketInfoAntiXray.getBuffer()); + int numberOfBlocks = presetBlockStateBits.length; + // Keep the lambda expressions as simple as possible. They are used very frequently. + LayeredIntSupplier random = numberOfBlocks == 1 ? (() -> 0) : engineMode == EngineMode.OBFUSCATE_LAYER ? new LayeredIntSupplier() { + // engine-mode: 3 + private int state; + private int next; + + { + while ((state = ThreadLocalRandom.current().nextInt()) == 0) ; + } + + @Override + public void nextLayer() { + // https://en.wikipedia.org/wiki/Xorshift + state ^= state << 13; + state ^= state >>> 17; + state ^= state << 5; + // https://www.pcg-random.org/posts/bounded-rands.html + next = (int) ((Integer.toUnsignedLong(state) * numberOfBlocks) >>> 32); + } + + @Override + public int getAsInt() { + return next; + } + } : new LayeredIntSupplier() { + // engine-mode: 2 + private int state; + + { + while ((state = ThreadLocalRandom.current().nextInt()) == 0) ; + } + + @Override + public int getAsInt() { + // https://en.wikipedia.org/wiki/Xorshift + state ^= state << 13; + state ^= state >>> 17; + state ^= state << 5; + // https://www.pcg-random.org/posts/bounded-rands.html + return (int) ((Integer.toUnsignedLong(state) * numberOfBlocks) >>> 32); + } + }; + + for (int chunkSectionIndex = 0; chunkSectionIndex <= maxChunkSectionIndex; chunkSectionIndex++) { + if (chunkPacketInfoAntiXray.isWritten(chunkSectionIndex) && chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex) != null) { + int[] presetBlockStateBitsTemp; + + if (chunkPacketInfoAntiXray.getPalette(chunkSectionIndex) instanceof GlobalPalette) { + if (engineMode == EngineMode.HIDE) { + presetBlockStateBitsTemp = switch (level.getWorld().getEnvironment()) { + case NETHER -> presetBlockStateBitsNetherrackGlobal; + case THE_END -> presetBlockStateBitsEndStoneGlobal; + default -> chunkSectionIndex + chunk.getMinSectionY() < 0 ? presetBlockStateBitsDeepslateGlobal : presetBlockStateBitsStoneGlobal; + }; + } else { + presetBlockStateBitsTemp = presetBlockStateBitsGlobal; + } + } else { + // If it's presetBlockStates, use this.presetBlockStatesFull instead + BlockState[] presetBlockStatesFull = chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex) == presetBlockStates ? this.presetBlockStatesFull : chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex); + presetBlockStateBitsTemp = presetBlockStateBits; + + for (int i = 0; i < presetBlockStateBitsTemp.length; i++) { + // This is thread safe because we only request IDs that are guaranteed to be in the palette and are visible + // For more details see the comments in the readPalette method + presetBlockStateBitsTemp[i] = chunkPacketInfoAntiXray.getPalette(chunkSectionIndex).idFor(presetBlockStatesFull[i]); + } + } + + bitStorageWriter.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex)); + + // Check if the chunk section below was not obfuscated + if (chunkSectionIndex == 0 || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex - 1) || chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex - 1) == null) { + // If so, initialize some stuff + bitStorageReader.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex)); + bitStorageReader.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex)); + solidTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex), solid, solidGlobal); + obfuscateTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex), obfuscate, obfuscateGlobal); + // Read the blocks of the upper layer of the chunk section below if it exists + LevelChunkSection belowChunkSection = null; + boolean skipFirstLayer = chunkSectionIndex == 0 || (belowChunkSection = chunk.getSections()[chunkSectionIndex - 1]) == EMPTY_SECTION; + + for (int z = 0; z < 16; z++) { + for (int x = 0; x < 16; x++) { + current[z][x] = true; + next[z][x] = skipFirstLayer || isTransparent(belowChunkSection, x, 15, z); + } + } + + // Abuse the obfuscateLayer method to read the blocks of the first layer of the current chunk section + bitStorageWriter.setBits(0); + obfuscateLayer(-1, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, emptyNearbyChunkSections, random); + } + + bitStorageWriter.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex)); + nearbyChunkSections[0] = chunkPacketInfoAntiXray.getNearbyChunks()[0] == null ? EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[0].getSections()[chunkSectionIndex]; + nearbyChunkSections[1] = chunkPacketInfoAntiXray.getNearbyChunks()[1] == null ? EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[1].getSections()[chunkSectionIndex]; + nearbyChunkSections[2] = chunkPacketInfoAntiXray.getNearbyChunks()[2] == null ? EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[2].getSections()[chunkSectionIndex]; + nearbyChunkSections[3] = chunkPacketInfoAntiXray.getNearbyChunks()[3] == null ? EMPTY_SECTION : chunkPacketInfoAntiXray.getNearbyChunks()[3].getSections()[chunkSectionIndex]; + + // Obfuscate all layers of the current chunk section except the upper one + for (int y = 0; y < 15; y++) { + boolean[][] temp = current; + current = next; + next = nextNext; + nextNext = temp; + random.nextLayer(); + obfuscateLayer(y, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random); + } + + // Check if the chunk section above doesn't need obfuscation + if (chunkSectionIndex == maxChunkSectionIndex || !chunkPacketInfoAntiXray.isWritten(chunkSectionIndex + 1) || chunkPacketInfoAntiXray.getPresetValues(chunkSectionIndex + 1) == null) { + // If so, obfuscate the upper layer of the current chunk section by reading blocks of the first layer from the chunk section above if it exists + LevelChunkSection aboveChunkSection; + + if (chunkSectionIndex != chunk.getSectionsCount() - 1 && (aboveChunkSection = chunk.getSections()[chunkSectionIndex + 1]) != EMPTY_SECTION) { + boolean[][] temp = current; + current = next; + next = nextNext; + nextNext = temp; + + for (int z = 0; z < 16; z++) { + for (int x = 0; x < 16; x++) { + if (isTransparent(aboveChunkSection, x, 0, z)) { + current[z][x] = true; + } + } + } + + // There is nothing to read anymore + bitStorageReader.setBits(0); + solid[0] = true; + random.nextLayer(); + obfuscateLayer(15, bitStorageReader, bitStorageWriter, solid, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random); + } + } else { + // If not, initialize the reader and other stuff for the chunk section above to obfuscate the upper layer of the current chunk section + bitStorageReader.setBits(chunkPacketInfoAntiXray.getBits(chunkSectionIndex + 1)); + bitStorageReader.setIndex(chunkPacketInfoAntiXray.getIndex(chunkSectionIndex + 1)); + solidTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex + 1), solid, solidGlobal); + obfuscateTemp = readPalette(chunkPacketInfoAntiXray.getPalette(chunkSectionIndex + 1), obfuscate, obfuscateGlobal); + boolean[][] temp = current; + current = next; + next = nextNext; + nextNext = temp; + random.nextLayer(); + obfuscateLayer(15, bitStorageReader, bitStorageWriter, solidTemp, obfuscateTemp, presetBlockStateBitsTemp, current, next, nextNext, nearbyChunkSections, random); + } + + bitStorageWriter.flush(); + } + } + + chunkPacketInfoAntiXray.getChunkPacket().setReady(true); + } + + private void obfuscateLayer(int y, BitStorageReader bitStorageReader, BitStorageWriter bitStorageWriter, boolean[] solid, boolean[] obfuscate, int[] presetBlockStateBits, boolean[][] current, boolean[][] next, boolean[][] nextNext, LevelChunkSection[] nearbyChunkSections, IntSupplier random) { + // First block of first line + int bits = bitStorageReader.read(); + + if (nextNext[0][0] = !solid[bits]) { + bitStorageWriter.skip(); + next[0][1] = true; + next[1][0] = true; + } else { + if (current[0][0] || isTransparent(nearbyChunkSections[2], 0, y, 15) || isTransparent(nearbyChunkSections[0], 15, y, 0)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[0][0] = true; + } + + // First line + for (int x = 1; x < 15; x++) { + bits = bitStorageReader.read(); + + if (nextNext[0][x] = !solid[bits]) { + bitStorageWriter.skip(); + next[0][x - 1] = true; + next[0][x + 1] = true; + next[1][x] = true; + } else { + if (current[0][x] || isTransparent(nearbyChunkSections[2], x, y, 15)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[0][x] = true; + } + } + + // Last block of first line + bits = bitStorageReader.read(); + + if (nextNext[0][15] = !solid[bits]) { + bitStorageWriter.skip(); + next[0][14] = true; + next[1][15] = true; + } else { + if (current[0][15] || isTransparent(nearbyChunkSections[2], 15, y, 15) || isTransparent(nearbyChunkSections[1], 0, y, 0)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[0][15] = true; + } + + // All inner lines + for (int z = 1; z < 15; z++) { + // First block + bits = bitStorageReader.read(); + + if (nextNext[z][0] = !solid[bits]) { + bitStorageWriter.skip(); + next[z][1] = true; + next[z - 1][0] = true; + next[z + 1][0] = true; + } else { + if (current[z][0] || isTransparent(nearbyChunkSections[0], 15, y, z)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[z][0] = true; + } + + // All inner blocks + for (int x = 1; x < 15; x++) { + bits = bitStorageReader.read(); + + if (nextNext[z][x] = !solid[bits]) { + bitStorageWriter.skip(); + next[z][x - 1] = true; + next[z][x + 1] = true; + next[z - 1][x] = true; + next[z + 1][x] = true; + } else { + if (current[z][x]) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[z][x] = true; + } + } + + // Last block + bits = bitStorageReader.read(); + + if (nextNext[z][15] = !solid[bits]) { + bitStorageWriter.skip(); + next[z][14] = true; + next[z - 1][15] = true; + next[z + 1][15] = true; + } else { + if (current[z][15] || isTransparent(nearbyChunkSections[1], 0, y, z)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[z][15] = true; + } + } + + // First block of last line + bits = bitStorageReader.read(); + + if (nextNext[15][0] = !solid[bits]) { + bitStorageWriter.skip(); + next[15][1] = true; + next[14][0] = true; + } else { + if (current[15][0] || isTransparent(nearbyChunkSections[3], 0, y, 0) || isTransparent(nearbyChunkSections[0], 15, y, 15)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[15][0] = true; + } + + // Last line + for (int x = 1; x < 15; x++) { + bits = bitStorageReader.read(); + + if (nextNext[15][x] = !solid[bits]) { + bitStorageWriter.skip(); + next[15][x - 1] = true; + next[15][x + 1] = true; + next[14][x] = true; + } else { + if (current[15][x] || isTransparent(nearbyChunkSections[3], x, y, 0)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[15][x] = true; + } + } + + // Last block of last line + bits = bitStorageReader.read(); + + if (nextNext[15][15] = !solid[bits]) { + bitStorageWriter.skip(); + next[15][14] = true; + next[14][15] = true; + } else { + if (current[15][15] || isTransparent(nearbyChunkSections[3], 15, y, 0) || isTransparent(nearbyChunkSections[1], 0, y, 15)) { + bitStorageWriter.skip(); + } else { + bitStorageWriter.write(presetBlockStateBits[random.getAsInt()]); + } + } + + if (!obfuscate[bits]) { + next[15][15] = true; + } + } + + private boolean isTransparent(LevelChunkSection chunkSection, int x, int y, int z) { + if (chunkSection == EMPTY_SECTION) { + return true; + } + + try { + return !solidGlobal[GLOBAL_BLOCKSTATE_PALETTE.idFor(chunkSection.getBlockState(x, y, z))]; + } catch (MissingPaletteEntryException e) { + // Race condition / visibility issue / no happens-before relationship + // We don't care and treat the block as transparent + // Internal implementation details of PalettedContainer, LinearPalette, HashMapPalette, CrudeIncrementalIntIdentityHashBiMap, ... guarantee us that no (other) exceptions will occur + return true; + } + } + + private boolean[] readPalette(Palette palette, boolean[] temp, boolean[] global) { + if (palette instanceof GlobalPalette) { + return global; + } + + try { + for (int i = 0; i < palette.getSize(); i++) { + temp[i] = global[GLOBAL_BLOCKSTATE_PALETTE.idFor(palette.valueFor(i))]; + } + } catch (MissingPaletteEntryException e) { + // Race condition / visibility issue / no happens-before relationship + // We don't care because we at least see the state as it was when the chunk packet was created + // Internal implementation details of PalettedContainer, LinearPalette, HashMapPalette, CrudeIncrementalIntIdentityHashBiMap, ... guarantee us that no (other) exceptions will occur until we have all the data that we need here + // Since all palettes have a fixed initial maximum size and there is no internal restructuring and no values are removed from palettes, we are also guaranteed to see the data + } + + return temp; + } + + @Override + public void onBlockChange(Level level, BlockPos blockPos, BlockState newBlockState, BlockState oldBlockState, int flags, int maxUpdateDepth) { + if (oldBlockState != null && solidGlobal[GLOBAL_BLOCKSTATE_PALETTE.idFor(oldBlockState)] && !solidGlobal[GLOBAL_BLOCKSTATE_PALETTE.idFor(newBlockState)] && blockPos.getY() <= maxBlockHeightUpdatePosition) { + updateNearbyBlocks(level, blockPos); + } + } + + @Override + public void onPlayerLeftClickBlock(ServerPlayerGameMode serverPlayerGameMode, BlockPos blockPos, ServerboundPlayerActionPacket.Action action, Direction direction, int worldHeight, int sequence) { + if (blockPos.getY() <= maxBlockHeightUpdatePosition) { + updateNearbyBlocks(serverPlayerGameMode.level, blockPos); + } + } + + private void updateNearbyBlocks(Level level, BlockPos blockPos) { + if (updateRadius >= 2) { + BlockPos temp = blockPos.west(); + updateBlock(level, temp); + updateBlock(level, temp.west()); + updateBlock(level, temp.below()); + updateBlock(level, temp.above()); + updateBlock(level, temp.north()); + updateBlock(level, temp.south()); + updateBlock(level, temp = blockPos.east()); + updateBlock(level, temp.east()); + updateBlock(level, temp.below()); + updateBlock(level, temp.above()); + updateBlock(level, temp.north()); + updateBlock(level, temp.south()); + updateBlock(level, temp = blockPos.below()); + updateBlock(level, temp.below()); + updateBlock(level, temp.north()); + updateBlock(level, temp.south()); + updateBlock(level, temp = blockPos.above()); + updateBlock(level, temp.above()); + updateBlock(level, temp.north()); + updateBlock(level, temp.south()); + updateBlock(level, temp = blockPos.north()); + updateBlock(level, temp.north()); + updateBlock(level, temp = blockPos.south()); + updateBlock(level, temp.south()); + } else if (updateRadius == 1) { + updateBlock(level, blockPos.west()); + updateBlock(level, blockPos.east()); + updateBlock(level, blockPos.below()); + updateBlock(level, blockPos.above()); + updateBlock(level, blockPos.north()); + updateBlock(level, blockPos.south()); + } else { + // Do nothing if updateRadius <= 0 (test mode) + } + } + + private void updateBlock(Level level, BlockPos blockPos) { + BlockState blockState = level.getBlockStateIfLoaded(blockPos); + + if (blockState != null && obfuscateGlobal[GLOBAL_BLOCKSTATE_PALETTE.idFor(blockState)]) { + ((ServerLevel) level).getChunkSource().blockChanged(blockPos); + } + } + + @FunctionalInterface + private interface LayeredIntSupplier extends IntSupplier { + default void nextLayer() { + + } + } +} 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..d98a3f5c54c67a673eb7dc456dd039cd78f9c34d --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfo.java @@ -0,0 +1,80 @@ +package com.destroystokyo.paper.antixray; + +import net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket; +import net.minecraft.world.level.chunk.LevelChunk; +import net.minecraft.world.level.chunk.Palette; + +public class ChunkPacketInfo { + + private final ClientboundLevelChunkWithLightPacket chunkPacket; + private final LevelChunk chunk; + private final int[] bits; + private final Object[] palettes; + private final int[] indexes; + private final Object[][] presetValues; + private byte[] buffer; + + public ChunkPacketInfo(ClientboundLevelChunkWithLightPacket chunkPacket, LevelChunk chunk) { + this.chunkPacket = chunkPacket; + this.chunk = chunk; + int sections = chunk.getSectionsCount(); + bits = new int[sections]; + palettes = new Object[sections]; + indexes = new int[sections]; + presetValues = new Object[sections][]; + } + + public ClientboundLevelChunkWithLightPacket getChunkPacket() { + return chunkPacket; + } + + public LevelChunk getChunk() { + return chunk; + } + + public byte[] getBuffer() { + return buffer; + } + + public void setBuffer(byte[] buffer) { + this.buffer = buffer; + } + + public int getBits(int chunkSectionIndex) { + return bits[chunkSectionIndex]; + } + + public void setBits(int chunkSectionIndex, int bits) { + this.bits[chunkSectionIndex] = bits; + } + + @SuppressWarnings("unchecked") + public Palette getPalette(int chunkSectionIndex) { + return (Palette) palettes[chunkSectionIndex]; + } + + public void setPalette(int chunkSectionIndex, Palette palette) { + palettes[chunkSectionIndex] = palette; + } + + public int getIndex(int chunkSectionIndex) { + return indexes[chunkSectionIndex]; + } + + public void setIndex(int chunkSectionIndex, int index) { + indexes[chunkSectionIndex] = index; + } + + @SuppressWarnings("unchecked") + public T[] getPresetValues(int chunkSectionIndex) { + return (T[]) presetValues[chunkSectionIndex]; + } + + public void setPresetValues(int chunkSectionIndex, T[] presetValues) { + this.presetValues[chunkSectionIndex] = presetValues; + } + + public boolean isWritten(int chunkSectionIndex) { + return bits[chunkSectionIndex] != 0; + } +} diff --git a/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java new file mode 100644 index 0000000000000000000000000000000000000000..80a2dfb266ae1221680a7b24fee2f7e2a8330b7d --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/antixray/ChunkPacketInfoAntiXray.java @@ -0,0 +1,29 @@ +package com.destroystokyo.paper.antixray; + +import net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket; +import net.minecraft.world.level.block.state.BlockState; +import net.minecraft.world.level.chunk.LevelChunk; + +public final class ChunkPacketInfoAntiXray extends ChunkPacketInfo implements Runnable { + + private final ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray; + private LevelChunk[] nearbyChunks; + + public ChunkPacketInfoAntiXray(ClientboundLevelChunkWithLightPacket chunkPacket, LevelChunk chunk, ChunkPacketBlockControllerAntiXray chunkPacketBlockControllerAntiXray) { + super(chunkPacket, chunk); + this.chunkPacketBlockControllerAntiXray = chunkPacketBlockControllerAntiXray; + } + + public LevelChunk[] getNearbyChunks() { + return nearbyChunks; + } + + public void setNearbyChunks(LevelChunk... nearbyChunks) { + this.nearbyChunks = nearbyChunks; + } + + @Override + public void run() { + chunkPacketBlockControllerAntiXray.obfuscate(this); + } +} diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundChunksBiomesPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundChunksBiomesPacket.java index ccc8c32c27c19cb0f0b581ca6693cfa737cb1de1..3c1cad5c2b34047cec44734ba4e8348cabec6f80 100644 --- a/src/main/java/net/minecraft/network/protocol/game/ClientboundChunksBiomesPacket.java +++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundChunksBiomesPacket.java @@ -70,8 +70,10 @@ public record ClientboundChunksBiomesPacket(List blockEntitiesData; - public ClientboundLevelChunkPacketData(LevelChunk chunk) { + // Paper start - Anti-Xray - Add chunk packet info + @Deprecated @io.papermc.paper.annotation.DoNotUse public ClientboundLevelChunkPacketData(LevelChunk chunk) { this(chunk, null); } + public ClientboundLevelChunkPacketData(LevelChunk chunk, com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo) { + // Paper end this.heightmaps = new CompoundTag(); for (Entry entry : chunk.getHeightmaps()) { @@ -38,7 +41,14 @@ public class ClientboundLevelChunkPacketData { } this.buffer = new byte[calculateChunkSize(chunk)]; - extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk); + + // Paper start - Anti-Xray - Add chunk packet info + if (chunkPacketInfo != null) { + chunkPacketInfo.setBuffer(this.buffer); + } + + extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk, chunkPacketInfo); + // Paper end this.blockEntitiesData = Lists.newArrayList(); for (Entry entry2 : chunk.getBlockEntities().entrySet()) { @@ -85,9 +95,15 @@ public class ClientboundLevelChunkPacketData { return byteBuf; } - public static void extractChunkData(FriendlyByteBuf buf, LevelChunk chunk) { + // Paper start - Anti-Xray - Add chunk packet info + @Deprecated @io.papermc.paper.annotation.DoNotUse public static void extractChunkData(FriendlyByteBuf buf, LevelChunk chunk) { ClientboundLevelChunkPacketData.extractChunkData(buf, chunk, null); } + public static void extractChunkData(FriendlyByteBuf buf, LevelChunk chunk, com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo) { + int chunkSectionIndex = 0; + for (LevelChunkSection levelChunkSection : chunk.getSections()) { - levelChunkSection.write(buf); + levelChunkSection.write(buf, chunkPacketInfo, chunkSectionIndex); + chunkSectionIndex++; + // Paper end } } diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java index 183b2191fa1c1b27adedf39593e1b5a223fb1279..8ead66c134688b11dca15f6509147e726f182e6a 100644 --- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java +++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkWithLightPacket.java @@ -18,13 +18,30 @@ public class ClientboundLevelChunkWithLightPacket implements Packet chunkPacketInfo = modifyBlocks ? chunk.getLevel().chunkPacketBlockController.getChunkPacketInfo(this, chunk) : null; + this.chunkData = new ClientboundLevelChunkPacketData(chunk, chunkPacketInfo); + // Paper end this.lightData = new ClientboundLightUpdatePacketData(chunkPos, lightProvider, skyBits, blockBits); + chunk.getLevel().chunkPacketBlockController.modifyBlocks(this, chunkPacketInfo); // Paper - Anti-Xray - Modify blocks } private ClientboundLevelChunkWithLightPacket(RegistryFriendlyByteBuf buf) { diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java index cd00b534e4c527e0b4a5ad78cde87c22c49b4c33..32f8186b1502b481c1100f7fdba0339ae3dd34fa 100644 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java @@ -343,7 +343,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe // Add env and gen to constructor, IWorldDataServer -> WorldDataServer public ServerLevel(MinecraftServer minecraftserver, Executor executor, LevelStorageSource.LevelStorageAccess convertable_conversionsession, PrimaryLevelData iworlddataserver, ResourceKey resourcekey, LevelStem worlddimension, ChunkProgressListener worldloadlistener, boolean flag, long i, List list, boolean flag1, @Nullable RandomSequences randomsequences, org.bukkit.World.Environment env, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider) { - super(iworlddataserver, resourcekey, minecraftserver.registryAccess(), worlddimension.type(), false, flag, i, minecraftserver.getMaxChainedNeighborUpdates(), gen, biomeProvider, env, spigotConfig -> minecraftserver.paperConfigurations.createWorldConfig(io.papermc.paper.configuration.PaperConfigurations.createWorldContextMap(convertable_conversionsession.levelDirectory.path(), iworlddataserver.getLevelName(), resourcekey.location(), spigotConfig, minecraftserver.registryAccess(), iworlddataserver.getGameRules()))); // Paper - create paper world configs + super(iworlddataserver, resourcekey, minecraftserver.registryAccess(), worlddimension.type(), false, flag, i, minecraftserver.getMaxChainedNeighborUpdates(), gen, biomeProvider, env, spigotConfig -> minecraftserver.paperConfigurations.createWorldConfig(io.papermc.paper.configuration.PaperConfigurations.createWorldContextMap(convertable_conversionsession.levelDirectory.path(), iworlddataserver.getLevelName(), resourcekey.location(), spigotConfig, minecraftserver.registryAccess(), iworlddataserver.getGameRules())), executor); // Paper - create paper world configs; Async-Anti-Xray: Pass executor this.pvpMode = minecraftserver.isPvpAllowed(); this.convertable = convertable_conversionsession; this.uuid = WorldUUID.getUUID(convertable_conversionsession.levelDirectory.path().toFile()); diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java index c4bc1819cba3287c4a67ae5d00f8c4d6ab899732..f2dd272a01b4e946a6746865d55ebc9861f8361b 100644 --- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java +++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java @@ -48,7 +48,7 @@ import org.bukkit.event.player.PlayerInteractEvent; public class ServerPlayerGameMode { private static final Logger LOGGER = LogUtils.getLogger(); - protected ServerLevel level; + public ServerLevel level; // Paper - Anti-Xray - protected -> public protected final ServerPlayer player; private GameType gameModeForPlayer; @Nullable @@ -332,6 +332,8 @@ public class ServerPlayerGameMode { } } + + this.level.chunkPacketBlockController.onPlayerLeftClickBlock(this, pos, action, direction, worldHeight, sequence); // Paper - Anti-Xray } public void destroyAndAck(BlockPos pos, int sequence, String reason) { diff --git a/src/main/java/net/minecraft/server/network/PlayerChunkSender.java b/src/main/java/net/minecraft/server/network/PlayerChunkSender.java index cdd66e6ce96e2613afe7f06ca8da3cfaa6704b2d..dafa2cf7d3c49fc5bdcd68d2a952812774a1dfe4 100644 --- a/src/main/java/net/minecraft/server/network/PlayerChunkSender.java +++ b/src/main/java/net/minecraft/server/network/PlayerChunkSender.java @@ -78,8 +78,11 @@ public class PlayerChunkSender { } } - private static void sendChunk(ServerGamePacketListenerImpl handler, ServerLevel world, LevelChunk chunk) { - handler.send(new ClientboundLevelChunkWithLightPacket(chunk, world.getLightEngine(), null, null)); + public static void sendChunk(ServerGamePacketListenerImpl handler, ServerLevel world, LevelChunk chunk) { // Paper - public + // Paper start - Anti-Xray + final boolean shouldModify = world.chunkPacketBlockController.shouldModify(handler.player, chunk); + handler.send(new ClientboundLevelChunkWithLightPacket(chunk, world.getLightEngine(), null, null, shouldModify)); + // Paper end - Anti-Xray // Paper start - PlayerChunkLoadEvent if (io.papermc.paper.event.packet.PlayerChunkLoadEvent.getHandlerList().getRegisteredListeners().length > 0) { new io.papermc.paper.event.packet.PlayerChunkLoadEvent(new org.bukkit.craftbukkit.CraftChunk(chunk), handler.getPlayer().getBukkitEntity()).callEvent(); diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java index a20e5f896cfbd0a3e60b741562194e30257449c1..7097d87dead028c8dd44cefc97694bada93f608b 100644 --- a/src/main/java/net/minecraft/server/players/PlayerList.java +++ b/src/main/java/net/minecraft/server/players/PlayerList.java @@ -426,7 +426,7 @@ public abstract class PlayerList { .getOrThrow(net.minecraft.world.level.biome.Biomes.PLAINS); player.connection.send(new net.minecraft.network.protocol.game.ClientboundLevelChunkWithLightPacket( new net.minecraft.world.level.chunk.EmptyLevelChunk(worldserver1, player.chunkPosition(), plains), - worldserver1.getLightEngine(), (java.util.BitSet)null, (java.util.BitSet) null) + worldserver1.getLightEngine(), (java.util.BitSet)null, (java.util.BitSet) null, true) // Paper - Anti-Xray ); } // Paper end - Send empty chunk diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java index 128bda0d2a690a69b41325a1bb9a2b924cc883cc..078088a854d466e66411d25d6dd6bcc536db78f3 100644 --- a/src/main/java/net/minecraft/world/level/Level.java +++ b/src/main/java/net/minecraft/world/level/Level.java @@ -172,6 +172,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { } // Paper end - add paper world config + public final com.destroystokyo.paper.antixray.ChunkPacketBlockController chunkPacketBlockController; // Paper - Anti-Xray public static BlockPos lastPhysicsProblem; // Spigot private org.spigotmc.TickLimiter entityLimiter; private org.spigotmc.TickLimiter tileLimiter; @@ -205,7 +206,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { public abstract ResourceKey getTypeKey(); - protected Level(WritableLevelData worlddatamutable, ResourceKey resourcekey, RegistryAccess iregistrycustom, Holder holder, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function paperWorldConfigCreator) { // Paper - create paper world config + protected Level(WritableLevelData worlddatamutable, ResourceKey resourcekey, RegistryAccess iregistrycustom, Holder holder, boolean flag, boolean flag1, long i, int j, org.bukkit.generator.ChunkGenerator gen, org.bukkit.generator.BiomeProvider biomeProvider, org.bukkit.World.Environment env, java.util.function.Function paperWorldConfigCreator, java.util.concurrent.Executor executor) { // Paper - create paper world config & Anti-Xray this.spigotConfig = new org.spigotmc.SpigotWorldConfig(((net.minecraft.world.level.storage.PrimaryLevelData) worlddatamutable).getLevelName()); // Spigot this.paperConfig = paperWorldConfigCreator.apply(this.spigotConfig); // Paper - create paper world config this.generator = gen; @@ -285,6 +286,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { // CraftBukkit end this.entityLimiter = new org.spigotmc.TickLimiter(this.spigotConfig.entityMaxTickTime); this.tileLimiter = new org.spigotmc.TickLimiter(this.spigotConfig.tileMaxTickTime); + this.chunkPacketBlockController = this.paperConfig().anticheat.antiXray.enabled ? new com.destroystokyo.paper.antixray.ChunkPacketBlockControllerAntiXray(this, executor) : com.destroystokyo.paper.antixray.ChunkPacketBlockController.NO_OPERATION_INSTANCE; // Paper - Anti-Xray } // Paper start - Cancel hit for vanished players @@ -485,6 +487,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable { // CraftBukkit end BlockState iblockdata1 = chunk.setBlockState(pos, state, (flags & 64) != 0, (flags & 1024) == 0); // CraftBukkit custom NO_PLACE flag + this.chunkPacketBlockController.onBlockChange(this, pos, state, iblockdata1, flags, maxUpdateDepth); // Paper - Anti-Xray if (iblockdata1 == null) { // CraftBukkit start - remove blockstate if failed (or the same) diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java index a846dd210ed1de0dc3e8b686663ee346bff33dc8..63d7d6b93119d96d753230472df30a9dedd889dc 100644 --- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java +++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java @@ -108,17 +108,17 @@ public abstract class ChunkAccess implements BiomeManager.NoiseBiomeSource, Ligh } } - ChunkAccess.replaceMissingSections(biomeRegistry, this.sections); + this.replaceMissingSections(biomeRegistry, this.sections); // Paper - Anti-Xray - make it a non-static method // CraftBukkit start this.biomeRegistry = biomeRegistry; } public final Registry biomeRegistry; // CraftBukkit end - private static void replaceMissingSections(Registry biomeRegistry, LevelChunkSection[] sectionArray) { + private void replaceMissingSections(Registry biomeRegistry, LevelChunkSection[] sectionArray) { // Paper - Anti-Xray - make it a non-static method for (int i = 0; i < sectionArray.length; ++i) { if (sectionArray[i] == null) { - sectionArray[i] = new LevelChunkSection(biomeRegistry); + sectionArray[i] = new LevelChunkSection(biomeRegistry, this.levelHeightAccessor instanceof net.minecraft.world.level.Level ? (net.minecraft.world.level.Level) this.levelHeightAccessor : null, this.chunkPos, this.levelHeightAccessor.getSectionYFromSectionIndex(i)); // Paper - Anti-Xray - Add parameters } } diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java index 56227ce823ab2997e2602f0807bbd54e54454344..5d15aed0f340a49a47e035fb0ce23413946bc124 100644 --- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java +++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java @@ -93,7 +93,7 @@ public class LevelChunk extends ChunkAccess { } public LevelChunk(Level world, ChunkPos pos, UpgradeData upgradeData, LevelChunkTicks blockTickScheduler, LevelChunkTicks fluidTickScheduler, long inhabitedTime, @Nullable LevelChunkSection[] sectionArrayInitializer, @Nullable LevelChunk.PostLoadProcessor entityLoader, @Nullable BlendingData blendingData) { - super(pos, upgradeData, world, world.registryAccess().lookupOrThrow(Registries.BIOME), inhabitedTime, sectionArrayInitializer, blendingData); + super(pos, upgradeData, world, net.minecraft.server.MinecraftServer.getServer().registryAccess().lookupOrThrow(Registries.BIOME), inhabitedTime, sectionArrayInitializer, blendingData); // Paper - Anti-Xray - The world isn't ready yet, use server singleton for registry this.tickersInLevel = Maps.newHashMap(); this.unsavedListener = (chunkcoordintpair1) -> { }; diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java index 52f44f14bbda60fe771c351e01e6ff470d7371e6..3dab36d00ea48101807ba40c7a7358b7eed12747 100644 --- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java +++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java @@ -39,9 +39,12 @@ public class LevelChunkSection { this.recalcBlockCounts(); } - public LevelChunkSection(Registry biomeRegistry) { - this.states = new PalettedContainer<>(Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES); - this.biomes = new PalettedContainer<>(biomeRegistry.asHolderIdMap(), biomeRegistry.getOrThrow(Biomes.PLAINS), PalettedContainer.Strategy.SECTION_BIOMES); + // Paper start - Anti-Xray - Add parameters + @Deprecated @io.papermc.paper.annotation.DoNotUse public LevelChunkSection(Registry biomeRegistry) { this(biomeRegistry, null, null, 0); } + public LevelChunkSection(Registry biomeRegistry, net.minecraft.world.level.Level level, net.minecraft.world.level.ChunkPos chunkPos, int chunkSectionY) { + // Paper end + this.states = new PalettedContainer<>(Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES, level == null || level.chunkPacketBlockController == null ? null : level.chunkPacketBlockController.getPresetBlockStates(level, chunkPos, chunkSectionY)); // Paper - Anti-Xray - Add preset block states + this.biomes = new PalettedContainer<>(biomeRegistry.asHolderIdMap(), biomeRegistry.getOrThrow(Biomes.PLAINS), PalettedContainer.Strategy.SECTION_BIOMES, null); // Paper - Anti-Xray - Add preset biomes } public BlockState getBlockState(int x, int y, int z) { @@ -178,10 +181,13 @@ public class LevelChunkSection { this.biomes = datapaletteblock; } - public void write(FriendlyByteBuf buf) { + // Paper start - Anti-Xray - Add chunk packet info + @Deprecated @io.papermc.paper.annotation.DoNotUse public void write(FriendlyByteBuf buf) { this.write(buf, null, 0); } + public void write(FriendlyByteBuf buf, com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo, int chunkSectionIndex) { buf.writeShort(this.nonEmptyBlockCount); - this.states.write(buf); - this.biomes.write(buf); + this.states.write(buf, chunkPacketInfo, chunkSectionIndex); + this.biomes.write(buf, null, chunkSectionIndex); + // Paper end } public int getSerializedSize() { diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java index 112d1259dd37743076ff6c67ffd711d084ba8698..69d6f203366df658e1ade55d917f0aa2b8a49be9 100644 --- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java +++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java @@ -28,6 +28,7 @@ public class PalettedContainer implements PaletteResize, PalettedContainer private static final int MIN_PALETTE_BITS = 0; private final PaletteResize dummyPaletteResize = (newSize, added) -> 0; public final IdMap registry; + private final T @org.jetbrains.annotations.Nullable [] presetValues; // Paper - Anti-Xray - Add preset values private volatile PalettedContainer.Data data; private final PalettedContainer.Strategy strategy; // private final ThreadingDetector threadingDetector = new ThreadingDetector("PalettedContainer"); // Paper - unused @@ -40,14 +41,19 @@ public class PalettedContainer implements PaletteResize, PalettedContainer // this.threadingDetector.checkAndUnlock(); // Paper - disable this } - public static Codec> codecRW(IdMap idList, Codec entryCodec, PalettedContainer.Strategy paletteProvider, T defaultValue) { - PalettedContainerRO.Unpacker> unpacker = PalettedContainer::unpack; + // Paper start - Anti-Xray - Add preset values + @Deprecated @io.papermc.paper.annotation.DoNotUse public static Codec> codecRW(IdMap idList, Codec entryCodec, PalettedContainer.Strategy paletteProvider, T defaultValue) { return PalettedContainer.codecRW(idList, entryCodec, paletteProvider, defaultValue, null); } + public static Codec> codecRW(IdMap idList, Codec entryCodec, PalettedContainer.Strategy paletteProvider, T defaultValue, T @org.jetbrains.annotations.Nullable [] presetValues) { + PalettedContainerRO.Unpacker> unpacker = (idListx, paletteProviderx, serialized) -> { + return unpack(idListx, paletteProviderx, serialized, defaultValue, presetValues); + }; + // Paper end return codec(idList, entryCodec, paletteProvider, defaultValue, unpacker); } public static Codec> codecRO(IdMap idList, Codec entryCodec, PalettedContainer.Strategy paletteProvider, T defaultValue) { PalettedContainerRO.Unpacker> unpacker = (idListx, paletteProviderx, serialized) -> unpack( - idListx, paletteProviderx, serialized + idListx, paletteProviderx, serialized, defaultValue, null // Paper - Anti-Xray - Add preset values ) .map(result -> (PalettedContainerRO)result); return codec(idList, entryCodec, paletteProvider, defaultValue, unpacker); @@ -71,31 +77,65 @@ public class PalettedContainer implements PaletteResize, PalettedContainer ); } + // Paper start - Anti-Xray - Add preset values + @Deprecated @io.papermc.paper.annotation.DoNotUse public PalettedContainer(IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainer.Configuration dataProvider, BitStorage storage, List paletteEntries) { this(idList, paletteProvider, dataProvider, storage, paletteEntries, null, null); } public PalettedContainer( IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainer.Configuration dataProvider, BitStorage storage, - List paletteEntries + List paletteEntries, T defaultValue, T @org.jetbrains.annotations.Nullable [] presetValues ) { + this.presetValues = presetValues; this.registry = idList; this.strategy = paletteProvider; this.data = new PalettedContainer.Data<>(dataProvider, storage, dataProvider.factory().create(dataProvider.bits(), idList, this, paletteEntries)); + + if (presetValues != null && (dataProvider.factory() == PalettedContainer.Strategy.SINGLE_VALUE_PALETTE_FACTORY ? this.data.palette.valueFor(0) != defaultValue : dataProvider.factory() != PalettedContainer.Strategy.GLOBAL_PALETTE_FACTORY)) { + // In 1.18 Mojang unfortunately removed code that already handled possible resize operations on read from disk for us + // We readd this here but in a smarter way than it was before + int maxSize = 1 << dataProvider.bits(); + + for (T presetValue : presetValues) { + if (this.data.palette.getSize() >= maxSize) { + java.util.Set allValues = new java.util.HashSet<>(paletteEntries); + allValues.addAll(Arrays.asList(presetValues)); + int newBits = Mth.ceillog2(allValues.size()); + + if (newBits > dataProvider.bits()) { + this.onResize(newBits, null); + } + + break; + } + + this.data.palette.idFor(presetValue); + } + } + // Paper end } - private PalettedContainer(IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainer.Data data) { + // Paper start - Anti-Xray - Add preset values + private PalettedContainer(IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainer.Data data, T @org.jetbrains.annotations.Nullable [] presetValues) { + this.presetValues = presetValues; + // Paper end this.registry = idList; this.strategy = paletteProvider; this.data = data; } - private PalettedContainer(PalettedContainer container) { + private PalettedContainer(PalettedContainer container, T @org.jetbrains.annotations.Nullable [] presetValues) { // Paper - Anti-Xray - Add preset values + this.presetValues = presetValues; // Paper - Anti-Xray - Add preset values this.registry = container.registry; this.strategy = container.strategy; this.data = container.data.copy(this); } - public PalettedContainer(IdMap idList, T object, PalettedContainer.Strategy paletteProvider) { + // Paper start - Anti-Xray - Add preset values + @Deprecated @io.papermc.paper.annotation.DoNotUse public PalettedContainer(IdMap idList, T object, PalettedContainer.Strategy paletteProvider) { this(idList, object, paletteProvider, null); } + public PalettedContainer(IdMap idList, T object, PalettedContainer.Strategy paletteProvider, T @org.jetbrains.annotations.Nullable [] presetValues) { + this.presetValues = presetValues; + // Paper end this.strategy = paletteProvider; this.registry = idList; this.data = this.createOrReuseData(null, 0); @@ -112,11 +152,33 @@ public class PalettedContainer implements PaletteResize, PalettedContainer @Override public synchronized int onResize(int newBits, T object) { // Paper - synchronize PalettedContainer.Data data = this.data; + + // Paper start - Anti-Xray - Add preset values + if (this.presetValues != null && object != null && data.configuration().factory() == PalettedContainer.Strategy.SINGLE_VALUE_PALETTE_FACTORY) { + int duplicates = 0; + List presetValues = Arrays.asList(this.presetValues); + duplicates += presetValues.contains(object) ? 1 : 0; + duplicates += presetValues.contains(data.palette.valueFor(0)) ? 1 : 0; + newBits = Mth.ceillog2((1 << this.strategy.calculateBitsForSerialization(this.registry, 1 << newBits)) + presetValues.size() - duplicates); + } + PalettedContainer.Data data2 = this.createOrReuseData(data, newBits); data2.copyFrom(data.palette, data.storage); this.data = data2; - return data2.palette.idFor(object); + this.addPresetValues(); + return object == null ? -1 : data2.palette.idFor(object); + // Paper end + } + + // Paper start - Anti-Xray - Add preset values + private void addPresetValues() { + if (this.presetValues != null && this.data.configuration().factory() != PalettedContainer.Strategy.GLOBAL_PALETTE_FACTORY) { + for (T presetValue : this.presetValues) { + this.data.palette.idFor(presetValue); + } + } } + // Paper end public T getAndSet(int x, int y, int z, T value) { this.acquire(); @@ -183,24 +245,33 @@ public class PalettedContainer implements PaletteResize, PalettedContainer data.palette.read(buf); buf.readLongArray(data.storage.getRaw()); this.data = data; + this.addPresetValues(); // Paper - Anti-Xray - Add preset values (inefficient, but this isn't used by the server) } finally { this.release(); } } + // Paper start - Anti-Xray; Add chunk packet info + @Override + @Deprecated @io.papermc.paper.annotation.DoNotUse public void write(FriendlyByteBuf buf) { this.write(buf, null, 0); } @Override - public synchronized void write(FriendlyByteBuf buf) { // Paper - synchronize + public synchronized void write(FriendlyByteBuf buf, @Nullable com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo, int chunkSectionIndex) { // Paper - Synchronize this.acquire(); try { - this.data.write(buf); + this.data.write(buf, chunkPacketInfo, chunkSectionIndex); + + if (chunkPacketInfo != null) { + chunkPacketInfo.setPresetValues(chunkSectionIndex, this.presetValues); + } + // Paper end } finally { this.release(); } } private static DataResult> unpack( - IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainerRO.PackedData serialized + IdMap idList, PalettedContainer.Strategy paletteProvider, PalettedContainerRO.PackedData serialized, T defaultValue, T @org.jetbrains.annotations.Nullable [] presetValues // Paper - Anti-Xray - Add preset values ) { List list = serialized.paletteEntries(); int i = paletteProvider.size(); @@ -233,7 +304,7 @@ public class PalettedContainer implements PaletteResize, PalettedContainer } } - return DataResult.success(new PalettedContainer<>(idList, paletteProvider, configuration, bitStorage, list)); + return DataResult.success(new PalettedContainer<>(idList, paletteProvider, configuration, bitStorage, list, defaultValue, presetValues)); // Paper - Anti-Xray - Add preset values } @Override @@ -291,12 +362,12 @@ public class PalettedContainer implements PaletteResize, PalettedContainer @Override public PalettedContainer copy() { - return new PalettedContainer<>(this); + return new PalettedContainer<>(this, this.presetValues); // Paper - Anti-Xray - Add preset values } @Override public PalettedContainer recreate() { - return new PalettedContainer<>(this.registry, this.data.palette.valueFor(0), this.strategy); + return new PalettedContainer<>(this.registry, this.data.palette.valueFor(0), this.strategy, this.presetValues); // Paper - Anti-Xray - Add preset values } @Override @@ -335,9 +406,18 @@ public class PalettedContainer implements PaletteResize, PalettedContainer return 1 + this.palette.getSerializedSize() + VarInt.getByteSize(this.storage.getRaw().length) + this.storage.getRaw().length * 8; } - public void write(FriendlyByteBuf buf) { + // Paper start - Anti-Xray - Add chunk packet info + public void write(FriendlyByteBuf buf, @Nullable com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo, int chunkSectionIndex) { buf.writeByte(this.storage.getBits()); this.palette.write(buf); + + if (chunkPacketInfo != null) { + chunkPacketInfo.setBits(chunkSectionIndex, this.configuration.bits()); + chunkPacketInfo.setPalette(chunkSectionIndex, this.palette); + chunkPacketInfo.setIndex(chunkSectionIndex, buf.writerIndex() + VarInt.getByteSize(this.storage.getRaw().length)); + } + // Paper end + buf.writeLongArray(this.storage.getRaw()); } diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainerRO.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainerRO.java index 303e59be721d0e16e8822cf4e407595348ee7abf..51f74dd7b276e858889803d7f341d735ea1d463a 100644 --- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainerRO.java +++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainerRO.java @@ -14,7 +14,10 @@ public interface PalettedContainerRO { void getAll(Consumer action); - void write(FriendlyByteBuf buf); + // Paper start - Anti-Xray - Add chunk packet info + @Deprecated @io.papermc.paper.annotation.DoNotUse void write(FriendlyByteBuf buf); + void write(FriendlyByteBuf buf, @javax.annotation.Nullable com.destroystokyo.paper.antixray.ChunkPacketInfo chunkPacketInfo, int chunkSectionIndex); + // Paper end int getSerializedSize(); diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/SerializableChunkData.java b/src/main/java/net/minecraft/world/level/chunk/storage/SerializableChunkData.java index b86b3bf713668999a21c4120b1d16c295531b2ad..4bc7fa3324e9af3abce2acf960c7b0650aca2e36 100644 --- a/src/main/java/net/minecraft/world/level/chunk/storage/SerializableChunkData.java +++ b/src/main/java/net/minecraft/world/level/chunk/storage/SerializableChunkData.java @@ -79,7 +79,7 @@ import org.slf4j.Logger; // CraftBukkit - persistentDataContainer public record SerializableChunkData(Registry biomeRegistry, ChunkPos chunkPos, int minSectionY, long lastUpdateTime, long inhabitedTime, ChunkStatus chunkStatus, @Nullable BlendingData.Packed blendingData, @Nullable BelowZeroRetrogen belowZeroRetrogen, UpgradeData upgradeData, @Nullable long[] carvingMask, Map heightmaps, ChunkAccess.PackedTicks packedTicks, ShortList[] postProcessingSections, boolean lightCorrect, List sectionData, List entities, List blockEntities, CompoundTag structureData, @Nullable Tag persistentDataContainer) { - public static final Codec> BLOCK_STATE_CODEC = PalettedContainer.codecRW(Block.BLOCK_STATE_REGISTRY, BlockState.CODEC, PalettedContainer.Strategy.SECTION_STATES, Blocks.AIR.defaultBlockState()); + public static final Codec> BLOCK_STATE_CODEC = PalettedContainer.codecRW(Block.BLOCK_STATE_REGISTRY, BlockState.CODEC, PalettedContainer.Strategy.SECTION_STATES, Blocks.AIR.defaultBlockState(), null); // Paper start - Anti-Xray private static final Logger LOGGER = LogUtils.getLogger(); private static final String TAG_UPGRADE_DATA = "UpgradeData"; private static final String BLOCK_TICKS_TAG = "block_ticks"; @@ -111,6 +111,7 @@ public record SerializableChunkData(Registry biomeRegistry, ChunkPos chun @Nullable public static SerializableChunkData parse(LevelHeightAccessor world, RegistryAccess registryManager, CompoundTag nbt) { + net.minecraft.server.level.ServerLevel serverLevel = (net.minecraft.server.level.ServerLevel) world; // Paper - Anti-Xray This is is seemingly only called from ChunkMap, where, we have a server level. We'll fight this later if needed. if (!nbt.contains("Status", 8)) { return null; } else { @@ -208,19 +209,23 @@ public record SerializableChunkData(Registry biomeRegistry, ChunkPos chun Codec>> codec = makeBiomeCodecRW(iregistry); // CraftBukkit - read/write for (int i1 = 0; i1 < nbttaglist2.size(); ++i1) { - CompoundTag nbttagcompound3 = nbttaglist2.getCompound(i1); + CompoundTag nbttagcompound3 = nbttaglist2.getCompound(i1); final CompoundTag sectionData = nbttagcompound3; // Paper - Anti-Xray - OBFHELPER byte b0 = nbttagcompound3.getByte("Y"); LevelChunkSection chunksection; if (b0 >= world.getMinSectionY() && b0 <= world.getMaxSectionY()) { PalettedContainer datapaletteblock; + // Paper start - Anti-Xray - Add preset block states + BlockState[] presetBlockStates = serverLevel.chunkPacketBlockController.getPresetBlockStates(serverLevel, chunkcoordintpair, b0); + if (nbttagcompound3.contains("block_states", 10)) { - datapaletteblock = (PalettedContainer) SerializableChunkData.BLOCK_STATE_CODEC.parse(NbtOps.INSTANCE, nbttagcompound3.getCompound("block_states")).promotePartial((s1) -> { + Codec> blockStateCodec = presetBlockStates == null ? BLOCK_STATE_CODEC : PalettedContainer.codecRW(Block.BLOCK_STATE_REGISTRY, BlockState.CODEC, PalettedContainer.Strategy.SECTION_STATES, Blocks.AIR.defaultBlockState(), presetBlockStates); // Paper - Anti-Xray + datapaletteblock = blockStateCodec.parse(NbtOps.INSTANCE, sectionData.getCompound("block_states")).promotePartial((s1) -> { // Paper - Anti-Xray logErrors(chunkcoordintpair, b0, s1); }).getOrThrow(SerializableChunkData.ChunkReadException::new); } else { - datapaletteblock = new PalettedContainer<>(Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES); + datapaletteblock = new PalettedContainer<>(Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES, presetBlockStates); // Paper - Anti-Xray } PalettedContainer object; // CraftBukkit - read/write @@ -230,7 +235,7 @@ public record SerializableChunkData(Registry biomeRegistry, ChunkPos chun logErrors(chunkcoordintpair, b0, s1); }).getOrThrow(SerializableChunkData.ChunkReadException::new); } else { - object = new PalettedContainer<>(iregistry.asHolderIdMap(), iregistry.getOrThrow(Biomes.PLAINS), PalettedContainer.Strategy.SECTION_BIOMES); + object = new PalettedContainer<>(iregistry.asHolderIdMap(), iregistry.getOrThrow(Biomes.PLAINS), PalettedContainer.Strategy.SECTION_BIOMES, null); // Paper - Anti-Xray - Add preset biomes } chunksection = new LevelChunkSection(datapaletteblock, (PalettedContainer) object); // CraftBukkit - read/write @@ -391,7 +396,7 @@ public record SerializableChunkData(Registry biomeRegistry, ChunkPos chun // CraftBukkit start - read/write private static Codec>> makeBiomeCodecRW(Registry iregistry) { - return PalettedContainer.codecRW(iregistry.asHolderIdMap(), iregistry.holderByNameCodec(), PalettedContainer.Strategy.SECTION_BIOMES, iregistry.getOrThrow(Biomes.PLAINS)); + return PalettedContainer.codecRW(iregistry.asHolderIdMap(), iregistry.holderByNameCodec(), PalettedContainer.Strategy.SECTION_BIOMES, iregistry.getOrThrow(Biomes.PLAINS), null); // Paper - Anti-Xray - Add preset biomes } // CraftBukkit end diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java index 5fc9e8e969debb3e15ed474b36a1c48b086d0449..f65cc95ab28e8a3b21eac2b16bd9ebe97e56e571 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java @@ -56,7 +56,7 @@ public class CraftChunk implements Chunk { private final ServerLevel worldServer; private final int x; private final int z; - private static final PalettedContainer emptyBlockIDs = new PalettedContainer<>(net.minecraft.world.level.block.Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES); + private static final PalettedContainer emptyBlockIDs = new PalettedContainer<>(net.minecraft.world.level.block.Block.BLOCK_STATE_REGISTRY, Blocks.AIR.defaultBlockState(), PalettedContainer.Strategy.SECTION_STATES, null); // Paper - Anti-Xray - Add preset block states private static final byte[] FULL_LIGHT = new byte[2048]; private static final byte[] EMPTY_LIGHT = new byte[2048]; diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java index 694eacb7d3ffd28fe7684139554113e58be1ebfa..f3ec7e48f0c1ff3476886a7d64cc0dcc4edeab5f 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java @@ -2692,7 +2692,7 @@ public final class CraftServer implements Server { public ChunkGenerator.ChunkData createChunkData(World world) { Preconditions.checkArgument(world != null, "World cannot be null"); ServerLevel handle = ((CraftWorld) world).getHandle(); - return new OldCraftChunkData(world.getMinHeight(), world.getMaxHeight(), handle.registryAccess().lookupOrThrow(Registries.BIOME)); + return new OldCraftChunkData(world.getMinHeight(), world.getMaxHeight(), handle.registryAccess().lookupOrThrow(Registries.BIOME), world); // Paper - Anti-Xray - Add parameters } @Override diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java index 406a3b4a6e213879a9b262d2ffa9ba404cf31cc1..367e662c2ca370f569fc65e3f74ec322140630db 100644 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java @@ -472,11 +472,16 @@ public class CraftWorld extends CraftRegionAccessor implements World { List playersInRange = playerChunk.playerProvider.getPlayers(playerChunk.getPos(), false); if (playersInRange.isEmpty()) return; - ClientboundLevelChunkWithLightPacket refreshPacket = new ClientboundLevelChunkWithLightPacket(chunk, this.world.getLightEngine(), null, null); + // Paper start - Anti-Xray bypass + final Map refreshPackets = new HashMap<>(); for (ServerPlayer player : playersInRange) { if (player.connection == null) continue; - player.connection.send(refreshPacket); + Boolean shouldModify = chunk.getLevel().chunkPacketBlockController.shouldModify(player, chunk); + player.connection.send(refreshPackets.computeIfAbsent(shouldModify, s -> { // Use connection to prevent creating firing event + return new ClientboundLevelChunkWithLightPacket(chunk, this.world.getLightEngine(), null, null, (Boolean) s); + })); + // Paper end - Anti-Xray bypass } }); }); diff --git a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java index e7f7a246e9c03e676dadfee59de87b8b2ac55ba3..03eb35d5c67f125c44cf46595c93d124ac7892b8 100644 --- a/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java +++ b/src/main/java/org/bukkit/craftbukkit/generator/OldCraftChunkData.java @@ -27,8 +27,13 @@ public final class OldCraftChunkData implements ChunkGenerator.ChunkData { private final Registry biomes; private Set tiles; private final Set lights = new HashSet<>(); + // Paper start - Anti-Xray - Add parameters + private final org.bukkit.World world; - public OldCraftChunkData(int minHeight, int maxHeight, Registry biomes) { + @Deprecated @io.papermc.paper.annotation.DoNotUse public OldCraftChunkData(int minHeight, int maxHeight, Registry biomes) { this(minHeight, maxHeight, biomes, null); } + public OldCraftChunkData(int minHeight, int maxHeight, Registry biomes, org.bukkit.World world) { + this.world = world; + // Paper end this.minHeight = minHeight; this.maxHeight = maxHeight; this.biomes = biomes; @@ -176,7 +181,7 @@ public final class OldCraftChunkData implements ChunkGenerator.ChunkData { int offset = (y - this.minHeight) >> 4; LevelChunkSection section = this.sections[offset]; if (create && section == null) { - this.sections[offset] = section = new LevelChunkSection(this.biomes); + this.sections[offset] = section = new LevelChunkSection(this.biomes, this.world instanceof org.bukkit.craftbukkit.CraftWorld ? ((org.bukkit.craftbukkit.CraftWorld) this.world).getHandle() : null, null, offset + (this.minHeight >> 4)); // Paper - Anti-Xray - Add parameters } return section; }