196 lines
8.7 KiB
Diff
196 lines
8.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Cryptite <cryptite@gmail.com>
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Date: Mon, 28 Feb 2022 09:01:45 -0600
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Subject: [PATCH] Packet obfuscation and reduction
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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index 3e17f6131bf590d7c4a16b79c1c145cb4f565bc9..e1233fa58d068448d0accef7a7f6725fcb902848 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetEntityDataPacket.java
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@@ -22,6 +22,13 @@ public class ClientboundSetEntityDataPacket implements Packet<ClientGamePacketLi
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}
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+ // Slice start
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+ public ClientboundSetEntityDataPacket(int id, List<SynchedEntityData.DataItem<?>> packedItems) {
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+ this.id = id;
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+ this.packedItems = packedItems;
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+ }
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+ // Slice end
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+
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public ClientboundSetEntityDataPacket(FriendlyByteBuf buf) {
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this.id = buf.readVarInt();
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this.packedItems = SynchedEntityData.unpack(buf);
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diff --git a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
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index 1d88edfd09a909044f6e3175af652914b4d06311..e4f8403c6544e1a00571f28954458a1412a6de58 100644
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--- a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
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+++ b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
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@@ -136,6 +136,11 @@ public class SynchedEntityData {
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}
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public <T> void set(EntityDataAccessor<T> key, T value) {
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+ //Slice start
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+ set(key, value, null);
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+ }
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+
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+ public <T> void set(EntityDataAccessor<T> key, T value, @Nullable T foreignValue) { // Slice end
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SynchedEntityData.DataItem<T> datawatcher_item = this.getItem(key);
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if (ObjectUtils.notEqual(value, datawatcher_item.getValue())) {
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@@ -145,6 +150,11 @@ public class SynchedEntityData {
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this.isDirty = true;
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}
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+ // Slice start
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+ if (foreignValue != null && ObjectUtils.notEqual(foreignValue, datawatcher_item.getForeignValue())) {
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+ datawatcher_item.setForeignValue(foreignValue);
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+ }
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+ // Slice end
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}
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// CraftBukkit start - add method from above
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@@ -200,6 +210,28 @@ public class SynchedEntityData {
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return list;
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}
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+ // Slice start
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+ @Nullable
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+ public List<SynchedEntityData.DataItem<?>> packForeignDirty(List<DataItem<?>> unpackedData) {
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+ List<SynchedEntityData.DataItem<?>> list = null;
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+
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+ for (DataItem<?> dataItem : unpackedData) {
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+ DataItem<?> item = itemsById.get(dataItem.accessor.getId());
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+ if (item.isDirty(true)) {
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+ item.setForeignDirty(false);
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+
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+ if (list == null) {
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+ list = Lists.newArrayList();
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+ }
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+
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+ list.add(item.copy(true));
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+ }
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+ }
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+
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+ return list;
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+ }
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+ // Slice end
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+
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@Nullable
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public List<SynchedEntityData.DataItem<?>> getAll() {
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List<SynchedEntityData.DataItem<?>> list = null;
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@@ -313,11 +345,14 @@ public class SynchedEntityData {
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final EntityDataAccessor<T> accessor;
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T value;
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private boolean dirty;
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+ @Nullable T foreignValue = null; // Slice
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+ private boolean foreignDirty; // Slice
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public DataItem(EntityDataAccessor<T> data, T value) {
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this.accessor = data;
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this.value = value;
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this.dirty = true;
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+ this.foreignDirty = true; // Slice
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}
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public EntityDataAccessor<T> getAccessor() {
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@@ -343,5 +378,34 @@ public class SynchedEntityData {
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public SynchedEntityData.DataItem<T> copy() {
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return new SynchedEntityData.DataItem<>(this.accessor, this.accessor.getSerializer().copy(this.value));
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}
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+
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+ // Slice start
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+ public void setForeignValue(T foreignValue) {
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+ this.foreignValue = foreignValue;
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+ this.foreignDirty = true;
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+ }
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+
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+ public @Nullable T getForeignValue() {
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+ return foreignValue;
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+ }
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+
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+ public boolean isDirty(boolean foreign) {
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+ if (foreign) {
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+ //There must be a foreign value in order for this to be dirty, otherwise we consider this a normal
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+ //value and check the normal dirty flag.
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+ return foreignValue == null || this.foreignDirty;
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+ }
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+
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+ return this.dirty;
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+ }
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+
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+ public void setForeignDirty(boolean dirty) {
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+ this.foreignDirty = dirty;
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+ }
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+
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+ public SynchedEntityData.DataItem<T> copy(boolean foreign) {
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+ return new SynchedEntityData.DataItem<>(this.accessor, this.accessor.getSerializer().copy((foreign && this.foreignValue != null ? this.foreignValue : this.value)));
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+ }
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+ // Slice end
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}
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}
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diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
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index 1092ba200a945d8d70e48f956535f56e2743302d..a7f2cc53a0b66d7cd3705f419337bd7ee8c78ec3 100644
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--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
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+++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
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@@ -371,7 +371,19 @@ public class ServerEntity {
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SynchedEntityData datawatcher = this.entity.getEntityData();
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if (datawatcher.isDirty()) {
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- this.broadcastAndSend(new ClientboundSetEntityDataPacket(this.entity.getId(), datawatcher, false));
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+ // Slice start
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+ ClientboundSetEntityDataPacket dataPacket = new ClientboundSetEntityDataPacket(this.entity.getId(), datawatcher, false);
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+ if (this.entity instanceof ServerPlayer serverPlayer) {
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+ serverPlayer.connection.send(dataPacket);
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+ }
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+
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+ //Get the packedData that the original packet has, and then determine if any of those are changed in
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+ //the foreign version. If null, nothing to notify foreign trackers about.
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+ List<SynchedEntityData.DataItem<?>> dirtyItems = datawatcher.packForeignDirty(dataPacket.getUnpackedData());
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+ if (dirtyItems != null) {
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+ this.broadcast(new ClientboundSetEntityDataPacket(this.entity.getId(), dirtyItems));
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+ }
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+ // Slice end
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}
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if (this.entity instanceof LivingEntity) {
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diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
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index a57d8aa70fe3df462279c494686056459dc70271..172d8008c2f5558962e889dd49f205b9a3800aa2 100644
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--- a/src/main/java/net/minecraft/world/entity/Entity.java
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+++ b/src/main/java/net/minecraft/world/entity/Entity.java
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@@ -3006,7 +3006,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
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this.entityData.markDirty(Entity.DATA_AIR_SUPPLY_ID);
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return;
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}
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- this.entityData.set(Entity.DATA_AIR_SUPPLY_ID, event.getAmount());
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+ this.entityData.set(Entity.DATA_AIR_SUPPLY_ID, event.getAmount(), getMaxAirSupply()); // Slice
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// CraftBukkit end
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}
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diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
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index e909d2cc08a5cea3a8b98ad6faf8eb65c33a35ef..e3725c380839257fa5b08c34b339ce30c8f3143f 100644
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--- a/src/main/java/net/minecraft/world/entity/player/Player.java
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+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
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@@ -632,7 +632,7 @@ public abstract class Player extends LivingEntity {
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public void increaseScore(int score) {
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int j = this.getScore();
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- this.entityData.set(Player.DATA_SCORE_ID, j + score);
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+ this.entityData.set(Player.DATA_SCORE_ID, j + score, 0); // Slice
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}
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public void startAutoSpinAttack(int riptideTicks) {
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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 6feeadad9aecb7d63e24d5daae115a93e39aeb3d..75faffa82241e5ed97f0a66dbb86f42a7f8c8c27 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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@@ -2102,7 +2102,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
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this.sendHealthUpdate();
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}
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}
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- this.getHandle().getEntityData().set(net.minecraft.world.entity.LivingEntity.DATA_HEALTH_ID, (float) this.getScaledHealth());
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+ this.getHandle().getEntityData().set(net.minecraft.world.entity.LivingEntity.DATA_HEALTH_ID, (float) this.getScaledHealth(), isDead() ? 0f : 20f); // Slice
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this.getHandle().maxHealthCache = getMaxHealth();
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}
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