179 lines
8.2 KiB
Java
179 lines
8.2 KiB
Java
package net.citizensnpcs;
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import java.util.Collection;
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import java.util.List;
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import java.util.Set;
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import org.bukkit.entity.Entity;
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import com.comphenix.protocol.PacketType;
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import com.comphenix.protocol.PacketType.Play.Server;
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import com.comphenix.protocol.ProtocolLibrary;
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import com.comphenix.protocol.ProtocolManager;
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import com.comphenix.protocol.events.ListenerPriority;
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import com.comphenix.protocol.events.PacketAdapter;
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import com.comphenix.protocol.events.PacketContainer;
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import com.comphenix.protocol.events.PacketEvent;
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import com.comphenix.protocol.reflect.FieldAccessException;
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import com.comphenix.protocol.reflect.StructureModifier;
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import com.comphenix.protocol.utility.MinecraftReflection;
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import com.comphenix.protocol.wrappers.EnumWrappers;
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import com.comphenix.protocol.wrappers.PlayerInfoData;
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import com.comphenix.protocol.wrappers.WrappedChatComponent;
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import com.comphenix.protocol.wrappers.WrappedGameProfile;
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import com.comphenix.protocol.wrappers.WrappedSignedProperty;
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import com.google.common.collect.Iterables;
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import com.mojang.authlib.GameProfile;
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import com.mojang.authlib.properties.Property;
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import net.citizensnpcs.api.CitizensAPI;
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import net.citizensnpcs.api.npc.NPC;
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import net.citizensnpcs.api.util.Messaging;
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import net.citizensnpcs.npc.ai.NPCHolder;
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import net.citizensnpcs.trait.MirrorTrait;
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import net.citizensnpcs.trait.RotationTrait;
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import net.citizensnpcs.trait.RotationTrait.PacketRotationSession;
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import net.citizensnpcs.util.NMS;
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public class ProtocolLibListener {
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private final Class<?> flagsClass;
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private final ProtocolManager manager;
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private final Citizens plugin;
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public ProtocolLibListener(Citizens plugin) {
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this.plugin = plugin;
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this.manager = ProtocolLibrary.getProtocolManager();
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flagsClass = MinecraftReflection.getMinecraftClass("EnumPlayerTeleportFlags",
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"PacketPlayOutPosition$EnumPlayerTeleportFlags",
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"network.protocol.game.PacketPlayOutPosition$EnumPlayerTeleportFlags");
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manager.addPacketListener(new PacketAdapter(plugin, ListenerPriority.HIGHEST, Server.PLAYER_INFO) {
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@Override
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public void onPacketSending(PacketEvent event) {
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int version = manager.getProtocolVersion(event.getPlayer());
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if (version >= 761) {
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NMS.onPlayerInfoAdd(event.getPlayer(), event.getPacket().getHandle());
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return;
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}
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List<PlayerInfoData> list = event.getPacket().getPlayerInfoDataLists().readSafely(0);
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if (list == null)
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return;
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boolean changed = false;
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for (int i = 0; i < list.size(); i++) {
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PlayerInfoData info = list.get(i);
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if (info == null)
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continue;
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NPC npc = CitizensAPI.getNPCRegistry().getByUniqueIdGlobal(info.getProfile().getUUID());
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if (npc == null || !npc.isSpawned())
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continue;
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MirrorTrait trait = npc.getTraitNullable(MirrorTrait.class);
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if (trait == null || !trait.isMirroring(event.getPlayer()))
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continue;
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GameProfile profile = NMS.getProfile(event.getPlayer());
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if (trait.mirrorName()) {
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list.set(i,
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new PlayerInfoData(
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WrappedGameProfile.fromPlayer(event.getPlayer()).withId(
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info.getProfile().getId()),
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info.getLatency(), info.getGameMode(),
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WrappedChatComponent.fromText(event.getPlayer().getDisplayName())));
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continue;
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}
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Collection<Property> textures = profile.getProperties().get("textures");
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if (textures == null || textures.size() == 0)
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continue;
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info.getProfile().getProperties().clear();
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for (String key : profile.getProperties().keySet()) {
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info.getProfile().getProperties().putAll(key,
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Iterables.transform(profile.getProperties().get(key),
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skin -> new WrappedSignedProperty(skin.getName(), skin.getValue(),
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skin.getSignature())));
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}
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changed = true;
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}
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if (changed) {
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event.getPacket().getPlayerInfoDataLists().write(0, list);
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}
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}
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});
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manager.addPacketListener(
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new PacketAdapter(plugin, ListenerPriority.MONITOR, Server.ENTITY_HEAD_ROTATION, Server.ENTITY_LOOK) {
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@Override
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public void onPacketSending(PacketEvent event) {
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NPC npc = getNPCFromPacket(event);
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if (npc == null)
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return;
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RotationTrait trait = npc.getTraitNullable(RotationTrait.class);
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if (trait == null)
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return;
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PacketRotationSession session = trait.getPacketSession(event.getPlayer());
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if (session == null || !session.isActive())
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return;
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PacketContainer packet = event.getPacket();
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PacketType type = event.getPacketType();
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if (type == Server.ENTITY_HEAD_ROTATION) {
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packet.getBytes().write(0, degToByte(session.getHeadYaw()));
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} else if (type == Server.ENTITY_LOOK) {
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packet.getBytes().write(0, degToByte(session.getBodyYaw()));
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packet.getBytes().write(1, degToByte(session.getPitch()));
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} else if (type == Server.ENTITY_MOVE_LOOK || type == Server.REL_ENTITY_MOVE_LOOK) {
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packet.getBytes().write(0, degToByte(session.getBodyYaw()));
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packet.getBytes().write(1, degToByte(session.getPitch()));
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} else if (type == Server.POSITION) {
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Set<PlayerTeleportFlag> rel = getFlagsModifier(packet).read(0);
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rel.remove(PlayerTeleportFlag.ZYAW);
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rel.remove(PlayerTeleportFlag.ZPITCH);
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getFlagsModifier(packet).write(0, rel);
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packet.getFloat().write(0, session.getBodyYaw());
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packet.getFloat().write(1, session.getPitch());
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}
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session.onPacketOverwritten();
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}
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});
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}
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private StructureModifier<Set<PlayerTeleportFlag>> getFlagsModifier(PacketContainer handle) {
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return handle.getSets(EnumWrappers.getGenericConverter(flagsClass, PlayerTeleportFlag.class));
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}
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private NPC getNPCFromPacket(PacketEvent event) {
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PacketContainer packet = event.getPacket();
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Entity entity = null;
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try {
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Integer id = packet.getIntegers().readSafely(0);
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if (id == null)
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return null;
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entity = manager.getEntityFromID(event.getPlayer().getWorld(), id);
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} catch (FieldAccessException | IllegalArgumentException ex) {
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if (!LOGGED_ERROR) {
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Messaging.severe(
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"Error retrieving entity from ID: ProtocolLib error? Suppressing further exceptions unless debugging.");
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ex.printStackTrace();
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LOGGED_ERROR = true;
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} else if (Messaging.isDebugging()) {
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ex.printStackTrace();
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}
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return null;
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}
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return entity instanceof NPCHolder ? ((NPCHolder) entity).getNPC() : null;
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}
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public enum PlayerTeleportFlag {
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X,
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Y,
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Z,
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ZPITCH,
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ZYAW,
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}
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private static byte degToByte(float in) {
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return (byte) (in * 256.0F / 360.0F);
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}
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private static boolean LOGGED_ERROR = false;
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}
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