Signed-off-by: Lixfel <agga-games@gmx.de>
Dieser Commit ist enthalten in:
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Commit
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/*
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This file is a part of the SteamWar software.
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Copyright (C) 2021 SteamWar.de-Serverteam
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.steamwar.techhider;
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import com.comphenix.tinyprotocol.Reflection;
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import com.comphenix.tinyprotocol.TinyProtocol;
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import de.steamwar.core.Core;
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import org.bukkit.GameMode;
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import org.bukkit.Material;
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import org.bukkit.entity.Player;
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import java.util.*;
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import java.util.function.BiFunction;
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import java.util.function.Function;
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import java.util.function.UnaryOperator;
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import java.util.stream.Collectors;
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public class TechHider {
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public static final Class<?> blockPosition = Reflection.getClass("{nms.core}.BlockPosition");
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private static final Class<?> baseBlockPosition = Reflection.getClass("{nms.core}.BaseBlockPosition");
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public static final Reflection.FieldAccessor<Integer> blockPositionX = Reflection.getField(baseBlockPosition, int.class, 0);
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public static final Reflection.FieldAccessor<Integer> blockPositionZ = Reflection.getField(baseBlockPosition, int.class, 2);
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public static final Class<?> iBlockData = Reflection.getClass("{nms.world.level.block.state}.IBlockData");
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public static final Class<?> block = Reflection.getClass("{nms.world.level.block}.Block");
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private static final Reflection.MethodInvoker getBlockDataByBlock = Reflection.getTypedMethod(block, null, iBlockData);
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public static final Class<?> craftMagicNumbers = Reflection.getClass("{obc}.util.CraftMagicNumbers");
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private static final Reflection.MethodInvoker getBlockByMaterial = Reflection.getTypedMethod(craftMagicNumbers, "getBlock", block, Material.class);
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private final Map<Class<?>, BiFunction<Player, Object, Object>> techhiders = new HashMap<>();
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private final BypassEvaluator bypass;
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private final Object obfuscationTarget;
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private final Set<Material> obfuscate;
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public TechHider(BypassEvaluator bypass, Material obfuscationTarget, Set<Material> obfuscate, Set<String> hiddenBlockEntities) {
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this.bypass = bypass;
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this.obfuscate = obfuscate;
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this.obfuscationTarget = getBlockDataByBlock.invoke(getBlockByMaterial.invoke(null, obfuscationTarget));
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techhiders.put(blockActionPacket, this::blockActionHider);
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techhiders.put(blockChangePacket, this::blockChangeHider);
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techhiders.put(tileEntityDataPacket, this::tileEntityDataHider);
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techhiders.put(multiBlockChangePacket,ProtocolWrapper.impl.multiBlockChangeGenerator(obfuscationTarget, obfuscate, bypass));
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techhiders.put(ChunkHider.impl.mapChunkPacket(), ChunkHider.impl.chunkHiderGenerator(bypass, BlockIds.impl.materialToId(obfuscationTarget), obfuscate.stream().flatMap(m -> BlockIds.impl.materialToAllIds(m).stream()).collect(Collectors.toSet()), hiddenBlockEntities));
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if(Core.getVersion() > 12 && Core.getVersion() < 19) {
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Class<?> blockBreakClass = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutBlockBreak");
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techhiders.put(blockBreakClass, ProtocolWrapper.impl.blockBreakHiderGenerator(blockBreakClass, obfuscationTarget, obfuscate, bypass));
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}
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if(Core.getVersion() > 8){
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techhiders.put(Reflection.getClass("{nms.network.protocol.game}.PacketPlayInUseItem"), (p, packet) -> p.getGameMode() == GameMode.SPECTATOR ? null : packet);
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}
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techhiders.put(Reflection.getClass("{nms.network.protocol.game}.PacketPlayInUseEntity"), (p, packet) -> p.getGameMode() == GameMode.SPECTATOR ? null : packet);
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}
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public void enable() {
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techhiders.forEach(TinyProtocol.instance::addFilter);
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}
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public void disable() {
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techhiders.forEach(TinyProtocol.instance::removeFilter);
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}
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public static final Class<?> multiBlockChangePacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutMultiBlockChange");
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public static final UnaryOperator<Object> multiBlockChangeCloner = ProtocolUtils.shallowCloneGenerator(TechHider.multiBlockChangePacket);
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private static final Class<?> blockChangePacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutBlockChange");
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private static final Function<Object, Object> blockChangeCloner = ProtocolUtils.shallowCloneGenerator(blockChangePacket);
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private static final Reflection.FieldAccessor<?> blockChangePosition = Reflection.getField(blockChangePacket, blockPosition, 0);
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private static final Reflection.FieldAccessor<?> blockChangeBlockData = Reflection.getField(blockChangePacket, iBlockData, 0);
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private Object blockChangeHider(Player p, Object packet) {
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Object pos = blockChangePosition.get(packet);
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if(bypass.bypass(p, ProtocolUtils.posToChunk(blockPositionX.get(pos)), ProtocolUtils.posToChunk(blockPositionZ.get(pos))))
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return packet;
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if(ProtocolWrapper.impl.iBlockDataHidden(obfuscate, blockChangeBlockData.get(packet))) {
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packet = blockChangeCloner.apply(packet);
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blockChangeBlockData.set(packet, obfuscationTarget);
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}
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return packet;
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}
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private static final Class<?> blockActionPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutBlockAction");
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private static final Reflection.FieldAccessor<?> blockActionPosition = Reflection.getField(blockActionPacket, blockPosition, 0);
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private Object blockActionHider(Player p, Object packet) {
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Object pos = blockActionPosition.get(packet);
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if(bypass.bypass(p, ProtocolUtils.posToChunk(blockPositionX.get(pos)), ProtocolUtils.posToChunk(blockPositionZ.get(pos))))
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return packet;
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return null;
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}
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public static final Class<?> tileEntityDataPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutTileEntityData");
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private static final Reflection.FieldAccessor<?> tileEntityDataPosition = Reflection.getField(tileEntityDataPacket, blockPosition, 0);
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private Object tileEntityDataHider(Player p, Object packet) {
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Object pos = tileEntityDataPosition.get(packet);
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if(bypass.bypass(p, ProtocolUtils.posToChunk(blockPositionX.get(pos)), ProtocolUtils.posToChunk(blockPositionZ.get(pos))))
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return packet;
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if(ProtocolWrapper.impl.unfilteredTileEntityDataAction(packet))
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return packet;
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return null;
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}
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public interface BypassEvaluator {
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boolean bypass(Player p, int chunkX, int chunkZ);
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}
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}
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