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https://github.com/PaperMC/Paper.git
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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
63 lines
3.6 KiB
Diff
63 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Brody Beckwith <brody@beckwith.dev>
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Date: Fri, 14 Jan 2022 00:41:11 -0500
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Subject: [PATCH] Multi Block Change API Implementation
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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index f96d61bdeb556665d6e6e5023f9d77fd82204e89..ccdc2345465313991f065e1176b58fb7d5e8722f 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSectionBlocksUpdatePacket.java
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@@ -59,6 +59,14 @@ public class ClientboundSectionBlocksUpdatePacket implements Packet<ClientGamePa
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}
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+ // Paper start - Multi Block Change API
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+ public ClientboundSectionBlocksUpdatePacket(SectionPos sectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<BlockState> blockChanges) {
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+ this.sectionPos = sectionPos;
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+ this.positions = blockChanges.keySet().toShortArray();
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+ this.states = blockChanges.values().toArray(new BlockState[0]);
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+ }
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+ // Paper end - Multi Block Change API
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+
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@Override
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public void write(FriendlyByteBuf buf) {
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buf.writeLong(this.sectionPos.asLong());
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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index 3c0be3eb7eb79fd2e62845d516f5d9a3c0f8403f..11e144bf561cc3c4dc1d8b712f915cc167f4d4ed 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
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@@ -850,6 +850,32 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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this.getHandle().connection.send(packet);
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}
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+ // Paper start
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+ @Override
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+ public void sendMultiBlockChange(final Map<? extends io.papermc.paper.math.Position, BlockData> blockChanges) {
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+ if (this.getHandle().connection == null) return;
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+
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+ Map<SectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState>> sectionMap = new HashMap<>();
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+
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+ for (Map.Entry<? extends io.papermc.paper.math.Position, BlockData> entry : blockChanges.entrySet()) {
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+ BlockData blockData = entry.getValue();
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+ BlockPos blockPos = io.papermc.paper.util.MCUtil.toBlockPos(entry.getKey());
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+ SectionPos sectionPos = SectionPos.of(blockPos);
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+
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+ it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState> sectionData = sectionMap.computeIfAbsent(sectionPos, key -> new it.unimi.dsi.fastutil.shorts.Short2ObjectArrayMap<>());
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+ sectionData.put(SectionPos.sectionRelativePos(blockPos), ((CraftBlockData) blockData).getState());
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+ }
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+
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+ for (Map.Entry<SectionPos, it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState>> entry : sectionMap.entrySet()) {
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+ SectionPos sectionPos = entry.getKey();
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+ it.unimi.dsi.fastutil.shorts.Short2ObjectMap<net.minecraft.world.level.block.state.BlockState> blockData = entry.getValue();
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+
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+ net.minecraft.network.protocol.game.ClientboundSectionBlocksUpdatePacket packet = new net.minecraft.network.protocol.game.ClientboundSectionBlocksUpdatePacket(sectionPos, blockData);
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+ this.getHandle().connection.send(packet);
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+ }
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+ }
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+ // Paper end
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+
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@Override
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public void sendBlockChanges(Collection<BlockState> blocks) {
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Preconditions.checkArgument(blocks != null, "blocks must not be null");
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