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Delete 0020-block-server-side-chunkbans.patch

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Telesphoreo 2022-04-22 01:35:55 -05:00
parent 042c4d854f
commit 7081efe798
1 changed files with 0 additions and 365 deletions
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patches/server/0020-block-server-side-chunkbans.patch
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@ -1,365 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Telesphoreo <me@telesphoreo.me>
Date: Fri, 22 Apr 2022 01:30:41 -0500
Subject: [PATCH] block server-side chunkbans
diff --git a/src/main/java/net/minecraft/network/PacketEncoder.java b/src/main/java/net/minecraft/network/PacketEncoder.java
index 5fce1177e7198d791d4ab1c64b394c5b1c145782..273af3a2e336c4dd23ef0028f51bcb5d3e9b26e4 100644
--- a/src/main/java/net/minecraft/network/PacketEncoder.java
+++ b/src/main/java/net/minecraft/network/PacketEncoder.java
@@ -5,9 +5,17 @@ import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
import io.papermc.paper.adventure.PaperAdventure; // Paper
+
import java.io.IOException;
+
+import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.protocol.Packet;
import net.minecraft.network.protocol.PacketFlow;
+import net.minecraft.network.protocol.game.*;
+import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.chunk.LevelChunk;
import net.minecraft.util.profiling.jfr.JvmProfiler;
import org.slf4j.Logger;
@@ -41,30 +49,93 @@ public class PacketEncoder extends MessageToByteEncoder<Packet<?>> {
packet.write(friendlyByteBuf);
int j = friendlyByteBuf.writerIndex() - i;
if (j > 8388608) {
- throw new IllegalArgumentException("Packet too big (is " + j + ", should be less than 8388608): " + packet);
- } else {
- int k = channelHandlerContext.channel().attr(Connection.ATTRIBUTE_PROTOCOL).get().getId();
- JvmProfiler.INSTANCE.onPacketSent(k, integer, channelHandlerContext.channel().remoteAddress(), j);
+ // Scissors start
+ noKicking(friendlyByteBuf, packet, integer, channelHandlerContext);
+ //throw new IllegalArgumentException("Packet too big (is " + j + ", should be less than 8388608): " + packet);
+ // Scissors end
}
} catch (Throwable var10) {
+ // Scissors start
+ noKicking(friendlyByteBuf, packet, integer, channelHandlerContext);
+ /*
LOGGER.error("Packet encoding of packet ID {} threw (skippable? {})", integer, packet.isSkippable(), var10); // Paper - Give proper error message
if (packet.isSkippable()) {
throw new SkipPacketException(var10);
} else {
throw var10;
}
+ */
+ // Scissors end
}
// Paper start
int packetLength = friendlyByteBuf.readableBytes();
if (packetLength > MAX_PACKET_SIZE) {
- throw new PacketTooLargeException(packet, packetLength);
+ // Scissors start
+ friendlyByteBuf.clear();
+ noKicking(friendlyByteBuf, packet, integer, channelHandlerContext);
+ packetLength = friendlyByteBuf.readableBytes();
+ if (packetLength > MAX_PACKET_SIZE) {
+ friendlyByteBuf.clear();
+ //throw new PacketTooLargeException(packet, packetLength);
+ }
+ //throw new PacketTooLargeException(packet, packetLength);
+ // Scissors end
}
// Paper end
}
}
}
+ // Scissors start
+ private static void noKicking(FriendlyByteBuf friendlyByteBuf, Packet packet, Integer integer, ChannelHandlerContext channelHandlerContext) {
+ // no kicking!!
+ friendlyByteBuf.clear();
+ friendlyByteBuf.writeVarInt(integer);
+ friendlyByteBuf.adventure$locale = channelHandlerContext.channel().attr(PaperAdventure.LOCALE_ATTRIBUTE).get(); // Paper
+ boolean didIt = true;
+ if (packet instanceof ClientboundBlockEntityDataPacket blockEntityDataPacket) {
+ packet = new ClientboundBlockEntityDataPacket(blockEntityDataPacket.getPos(), blockEntityDataPacket.getType(), new CompoundTag());
+ } else if (packet instanceof ClientboundLevelChunkPacket chunkPacket) {
+ chunkPacket.clearNbt();
+ } else if (packet instanceof ClientboundSetEntityDataPacket entityDataPacket) {
+ friendlyByteBuf.writeVarInt(entityDataPacket.getId());
+ friendlyByteBuf.writeByte(255);
+ didIt = false;//prevent default packet writing
+ } else if (packet instanceof ClientboundContainerSetContentPacket containerSetContentPacket) {
+ containerSetContentPacket.clearNbt();
+ } else if (packet instanceof ClientboundSetEquipmentPacket setEquipmentPacket) {
+ friendlyByteBuf.writeVarInt(setEquipmentPacket.getEntity());
+ didIt = false;//prevent default
+ } else if (packet instanceof ClientboundContainerSetSlotPacket containerSetSlotPacket) {
+ //i really would rather cancel this packet entirely buuut idk how sOOOOoooo
+ friendlyByteBuf.writeByte(containerSetSlotPacket.getContainerId());
+ friendlyByteBuf.writeVarInt(containerSetSlotPacket.getStateId());
+ friendlyByteBuf.writeShort(containerSetSlotPacket.getSlot());
+ friendlyByteBuf.writeItem(ItemStack.EMPTY);
+ didIt = false;//prevent default
+ } else if (packet instanceof ClientboundMapItemDataPacket mapItemDataPacket) {
+ packet = new ClientboundMapItemDataPacket(mapItemDataPacket.getMapId(),mapItemDataPacket.getScale(),mapItemDataPacket.isLocked(),null,null);
+ } else {
+ didIt = false;
+ LOGGER.info(packet.getClass().getName() + " overflowed/errored and was not caught!!");
+ }
+ if (didIt) {
+ try {
+ int i = friendlyByteBuf.writerIndex();
+ packet.write(friendlyByteBuf);
+ int j = friendlyByteBuf.writerIndex() - i;
+ if (j > 8388608) {
+ friendlyByteBuf.clear();
+ //throw new IllegalArgumentException("Packet too big (is " + j + ", should be less than 8388608): " + packet);
+ }
+ } catch (Throwable var69) {
+ friendlyByteBuf.clear();
+ }
+ }
+ }
+ // Scissors end
+
// Paper start
private static int MAX_PACKET_SIZE = 2097152;
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
index dbd8b9b09b82c1b75e8be9dc7416d9f0863c8c87..f71f68d1482f7e0481a95533e42e8ee5089f15ff 100644
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
@@ -10,7 +10,14 @@ public class ClientboundContainerSetContentPacket implements Packet<ClientGamePa
private final int containerId;
private final int stateId;
private final List<ItemStack> items;
- private final ItemStack carriedItem;
+ private ItemStack carriedItem; // Scissors - removed "final"
+
+ // Scissors start
+ public void clearNbt(){
+ this.items.clear();
+ this.carriedItem = ItemStack.EMPTY;
+ }
+ // Scissors end
public ClientboundContainerSetContentPacket(int syncId, int revision, NonNullList<ItemStack> contents, ItemStack cursorStack) {
this.containerId = syncId;
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java
new file mode 100644
index 0000000000000000000000000000000000000000..89c385c5ec88c8b51f9e118b65f3b9c2a58c7d9b
--- /dev/null
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacket.java
@@ -0,0 +1,212 @@
+package net.minecraft.network.protocol.game;
+
+import com.google.common.collect.Lists;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import java.util.BitSet;
+import java.util.List;
+import java.util.Map.Entry;
+import net.minecraft.core.BlockPos;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.LongArrayTag;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.network.protocol.Packet;
+import net.minecraft.world.level.ChunkPos;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.chunk.ChunkBiomeContainer;
+import net.minecraft.world.level.chunk.LevelChunk;
+import net.minecraft.world.level.chunk.LevelChunkSection;
+import net.minecraft.world.level.levelgen.Heightmap;
+
+public class ClientboundLevelChunkPacket implements Packet<ClientGamePacketListener> {
+ public static final int TWO_MEGABYTES = 2097152;
+ private final int x;
+ private final int z;
+ private final BitSet availableSections;
+ private final CompoundTag heightmaps;
+ private final int[] biomes;
+ private final byte[] buffer;
+ private final List<CompoundTag> blockEntitiesTags;
+ // Paper start
+ private final java.util.List<Packet> extraPackets = new java.util.ArrayList<>();
+ private static final int TE_LIMIT = Integer.getInteger("Paper.excessiveTELimit", 750);
+
+ @Override
+ public java.util.List<Packet> getExtraPackets() {
+ return extraPackets;
+ }
+ // Paper end
+
+ // Paper start - Async-Anti-Xray - Ready flag for the connection
+ private volatile boolean ready;
+
+ @Override
+ public boolean isReady() {
+ return this.ready;
+ }
+
+ public void setReady(boolean ready) {
+ this.ready = ready;
+ }
+ // Paper end
+
+ // Scissors start
+ public void clearNbt() {
+ this.blockEntitiesTags.clear();
+ this.extraPackets.clear();
+ }
+ // Scissors end
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public ClientboundLevelChunkPacket(LevelChunk chunk) { this(chunk, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
+ public ClientboundLevelChunkPacket(LevelChunk chunk, boolean modifyBlocks) {
+ com.destroystokyo.paper.antixray.ChunkPacketInfo<net.minecraft.world.level.block.state.BlockState> chunkPacketInfo = modifyBlocks ? chunk.level.chunkPacketBlockController.getChunkPacketInfo(this, chunk) : null;
+ // Paper end
+ ChunkPos chunkPos = chunk.getPos();
+ this.x = chunkPos.x;
+ this.z = chunkPos.z;
+ this.heightmaps = new CompoundTag();
+
+ for(Entry<Heightmap.Types, Heightmap> entry : chunk.getHeightmaps()) {
+ if (entry.getKey().sendToClient()) {
+ this.heightmaps.put(entry.getKey().getSerializationKey(), new LongArrayTag(entry.getValue().getRawData()));
+ }
+ }
+
+ this.biomes = chunk.getBiomes().writeBiomes();
+ this.buffer = new byte[this.calculateChunkSize(chunk)];
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ if (chunkPacketInfo != null) {
+ chunkPacketInfo.setBuffer(this.buffer);
+ }
+
+ this.availableSections = this.extractChunkData(new FriendlyByteBuf(this.getWriteBuffer()), chunk, chunkPacketInfo);
+ // Paper end
+ this.blockEntitiesTags = Lists.newArrayList();
+ int totalTileEntities = 0; // Paper
+
+ for(Entry<BlockPos, BlockEntity> entry2 : chunk.getBlockEntities().entrySet()) {
+ BlockEntity blockEntity = entry2.getValue();
+ // Paper start - improve oversized chunk data packet handling
+ if (++totalTileEntities > TE_LIMIT) {
+ ClientboundBlockEntityDataPacket updatePacket = blockEntity.getUpdatePacket();
+ if (updatePacket != null) {
+ this.extraPackets.add(updatePacket);
+ continue;
+ }
+ }
+ // Paper end
+ CompoundTag compoundTag = blockEntity.getUpdateTag();
+ if (blockEntity instanceof net.minecraft.world.level.block.entity.SkullBlockEntity) { net.minecraft.world.level.block.entity.SkullBlockEntity.sanitizeTileEntityUUID(compoundTag); } // Paper
+ this.blockEntitiesTags.add(compoundTag);
+ }
+
+ chunk.level.chunkPacketBlockController.modifyBlocks(this, chunkPacketInfo); // Paper - Anti-Xray - Modify blocks
+ }
+
+ public ClientboundLevelChunkPacket(FriendlyByteBuf buf) {
+ this.x = buf.readInt();
+ this.z = buf.readInt();
+ this.availableSections = buf.readBitSet();
+ this.heightmaps = buf.readNbt();
+ if (this.heightmaps == null) {
+ throw new RuntimeException("Can't read heightmap in packet for [" + this.x + ", " + this.z + "]");
+ } else {
+ this.biomes = buf.readVarIntArray(ChunkBiomeContainer.MAX_SIZE);
+ int i = buf.readVarInt();
+ if (i > 2097152) { // Paper - diff on change - if this changes, update PacketEncoder
+ throw new RuntimeException("Chunk Packet trying to allocate too much memory on read.");
+ } else {
+ this.buffer = new byte[i];
+ buf.readBytes(this.buffer);
+ this.blockEntitiesTags = buf.readList(FriendlyByteBuf::readNbt);
+ }
+ }
+ }
+
+ @Override
+ public void write(FriendlyByteBuf buf) {
+ buf.writeInt(this.x);
+ buf.writeInt(this.z);
+ buf.writeBitSet(this.availableSections);
+ buf.writeNbt(this.heightmaps);
+ buf.writeVarIntArray(this.biomes);
+ buf.writeVarInt(this.buffer.length);
+ buf.writeBytes(this.buffer);
+ buf.writeCollection(this.blockEntitiesTags, FriendlyByteBuf::writeNbt);
+ }
+
+ @Override
+ public void handle(ClientGamePacketListener listener) {
+ listener.handleLevelChunk(this);
+ }
+
+ public FriendlyByteBuf getReadBuffer() {
+ return new FriendlyByteBuf(Unpooled.wrappedBuffer(this.buffer));
+ }
+
+ private ByteBuf getWriteBuffer() {
+ ByteBuf byteBuf = Unpooled.wrappedBuffer(this.buffer);
+ byteBuf.writerIndex(0);
+ return byteBuf;
+ }
+
+ // Paper start - Anti-Xray - Add chunk packet info
+ @Deprecated public BitSet extractChunkData(FriendlyByteBuf buf, LevelChunk chunk) { return extractChunkData(buf, chunk, null); } // Notice for updates: Please make sure this method isn't used anywhere
+ public BitSet extractChunkData(FriendlyByteBuf buf, LevelChunk chunk, com.destroystokyo.paper.antixray.ChunkPacketInfo<net.minecraft.world.level.block.state.BlockState> chunkPacketInfo) {
+ // Paper end
+ BitSet bitSet = new BitSet();
+ LevelChunkSection[] levelChunkSections = chunk.getSections();
+ int i = 0;
+
+ for(int j = levelChunkSections.length; i < j; ++i) {
+ LevelChunkSection levelChunkSection = levelChunkSections[i];
+ if (levelChunkSection != LevelChunk.EMPTY_SECTION && !levelChunkSection.isEmpty()) {
+ bitSet.set(i);
+ levelChunkSection.write(buf, chunkPacketInfo); // Paper - Anti-Xray - Add chunk packet info
+ }
+ }
+
+ return bitSet;
+ }
+
+ protected int calculateChunkSize(LevelChunk chunk) {
+ int i = 0;
+ LevelChunkSection[] levelChunkSections = chunk.getSections();
+ int j = 0;
+
+ for(int k = levelChunkSections.length; j < k; ++j) {
+ LevelChunkSection levelChunkSection = levelChunkSections[j];
+ if (levelChunkSection != LevelChunk.EMPTY_SECTION && !levelChunkSection.isEmpty()) {
+ i += levelChunkSection.getSerializedSize();
+ }
+ }
+
+ return i;
+ }
+
+ public int getX() {
+ return this.x;
+ }
+
+ public int getZ() {
+ return this.z;
+ }
+
+ public BitSet getAvailableSections() {
+ return this.availableSections;
+ }
+
+ public CompoundTag getHeightmaps() {
+ return this.heightmaps;
+ }
+
+ public List<CompoundTag> getBlockEntitiesTags() {
+ return this.blockEntitiesTags;
+ }
+
+ public int[] getBiomes() {
+ return this.biomes;
+ }
+}