mirror of https://github.com/LOOHP/Limbo.git
460 lines
20 KiB
Java
460 lines
20 KiB
Java
package com.loohp.limbo.Server;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Optional;
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import java.util.Set;
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import java.util.UUID;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.stream.Collectors;
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import com.loohp.limbo.DeclareCommands;
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import com.loohp.limbo.Limbo;
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import com.loohp.limbo.Events.PlayerJoinEvent;
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import com.loohp.limbo.Events.PlayerLoginEvent;
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import com.loohp.limbo.Events.PlayerMoveEvent;
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import com.loohp.limbo.Events.PlayerQuitEvent;
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import com.loohp.limbo.Events.StatusPingEvent;
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import com.loohp.limbo.File.ServerProperties;
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import com.loohp.limbo.Location.Location;
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import com.loohp.limbo.Player.Player;
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import com.loohp.limbo.Player.PlayerInteractManager;
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import com.loohp.limbo.Server.Packets.Packet;
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import com.loohp.limbo.Server.Packets.PacketHandshakingIn;
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import com.loohp.limbo.Server.Packets.PacketLoginInLoginStart;
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import com.loohp.limbo.Server.Packets.PacketLoginOutDisconnect;
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import com.loohp.limbo.Server.Packets.PacketLoginOutLoginSuccess;
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import com.loohp.limbo.Server.Packets.PacketOut;
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import com.loohp.limbo.Server.Packets.PacketPlayInChat;
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import com.loohp.limbo.Server.Packets.PacketPlayInKeepAlive;
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import com.loohp.limbo.Server.Packets.PacketPlayInPosition;
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import com.loohp.limbo.Server.Packets.PacketPlayInPositionAndLook;
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import com.loohp.limbo.Server.Packets.PacketPlayInRotation;
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import com.loohp.limbo.Server.Packets.PacketPlayInTabComplete;
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import com.loohp.limbo.Server.Packets.PacketPlayOutDeclareCommands;
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import com.loohp.limbo.Server.Packets.PacketPlayOutDisconnect;
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import com.loohp.limbo.Server.Packets.PacketPlayOutEntityMetadata;
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import com.loohp.limbo.Server.Packets.PacketPlayOutLogin;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerAbilities;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerAbilities.PlayerAbilityFlags;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerInfo;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerInfo.PlayerInfoAction;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerInfo.PlayerInfoData;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPlayerInfo.PlayerInfoData.PlayerInfoDataAddPlayer.PlayerSkinProperty;
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import com.loohp.limbo.Server.Packets.PacketPlayOutPositionAndLook;
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import com.loohp.limbo.Server.Packets.PacketPlayOutSpawnPosition;
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import com.loohp.limbo.Server.Packets.PacketPlayOutTabComplete;
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import com.loohp.limbo.Server.Packets.PacketPlayOutTabComplete.TabCompleteMatches;
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import com.loohp.limbo.Server.Packets.PacketPlayOutUpdateViewPosition;
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import com.loohp.limbo.Server.Packets.PacketStatusInPing;
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import com.loohp.limbo.Server.Packets.PacketStatusInRequest;
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import com.loohp.limbo.Server.Packets.PacketStatusOutPong;
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import com.loohp.limbo.Server.Packets.PacketStatusOutResponse;
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import com.loohp.limbo.Utils.CustomStringUtils;
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import com.loohp.limbo.Utils.DataTypeIO;
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import com.loohp.limbo.Utils.GameMode;
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import com.loohp.limbo.Utils.MojangAPIUtils;
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import com.loohp.limbo.Utils.MojangAPIUtils.SkinResponse;
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import com.loohp.limbo.Utils.NamespacedKey;
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import com.loohp.limbo.World.BlockPosition;
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import com.loohp.limbo.World.World;
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import net.md_5.bungee.api.ChatColor;
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import net.md_5.bungee.api.chat.BaseComponent;
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import net.md_5.bungee.api.chat.TextComponent;
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import net.md_5.bungee.chat.ComponentSerializer;
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public class ClientConnection extends Thread {
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public static enum ClientState {
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LEGACY,
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HANDSHAKE,
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STATUS,
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LOGIN,
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PLAY,
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DISCONNECTED;
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}
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private final Socket client_socket;
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private boolean running;
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private ClientState state;
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private Player player;
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private AtomicLong lastKeepAlivePayLoad;
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private DataOutputStream output;
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private DataInputStream input;
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private InetAddress inetAddress;
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private boolean ready;
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public ClientConnection(Socket client_socket) {
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this.client_socket = client_socket;
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this.inetAddress = client_socket.getInetAddress();
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this.lastKeepAlivePayLoad = new AtomicLong();
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this.running = false;
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this.ready = false;
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}
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public InetAddress getInetAddress() {
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return inetAddress;
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}
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public long getLastKeepAlivePayLoad() {
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return lastKeepAlivePayLoad.get();
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}
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public void setLastKeepAlivePayLoad(long payLoad) {
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this.lastKeepAlivePayLoad.set(payLoad);
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}
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public Player getPlayer() {
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return player;
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}
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public ClientState getClientState() {
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return state;
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}
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public Socket getSocket() {
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return client_socket;
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}
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public boolean isRunning() {
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return running;
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}
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public boolean isReady() {
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return ready;
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}
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public synchronized void sendPacket(PacketOut packet) throws IOException {
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byte[] packetByte = packet.serializePacket();
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DataTypeIO.writeVarInt(output, packetByte.length);
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output.write(packetByte);
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output.flush();
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}
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public void disconnect(BaseComponent[] reason) {
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try {
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PacketPlayOutDisconnect packet = new PacketPlayOutDisconnect(ComponentSerializer.toString(reason));
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sendPacket(packet);
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} catch (IOException e) {}
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try {
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client_socket.close();
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} catch (IOException e) {}
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}
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public void disconnectDuringLogin(BaseComponent[] reason) {
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try {
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PacketLoginOutDisconnect packet = new PacketLoginOutDisconnect(ComponentSerializer.toString(reason));
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sendPacket(packet);
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} catch (IOException e) {}
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try {
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client_socket.close();
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} catch (IOException e) {}
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}
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@SuppressWarnings("deprecation")
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@Override
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public void run() {
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running = true;
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state = ClientState.HANDSHAKE;
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try {
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client_socket.setKeepAlive(true);
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input = new DataInputStream(client_socket.getInputStream());
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output = new DataOutputStream(client_socket.getOutputStream());
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int handShakeSize = DataTypeIO.readVarInt(input);
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//legacy ping
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if (handShakeSize == 0xFE) {
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state = ClientState.LEGACY;
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output.writeByte(255);
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String str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort();
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Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Legacy Status has pinged");
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ServerProperties p = Limbo.getInstance().getServerProperties();
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StatusPingEvent event = Limbo.getInstance().getEventsManager().callEvent(new StatusPingEvent(this, p.getVersionString(), p.getProtocol(), ComponentSerializer.parse(p.getMotdJson()), p.getMaxPlayers(), Limbo.getInstance().getPlayers().size(), p.getFavicon().orElse(null)));
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String response = Limbo.getInstance().buildLegacyPingResponse(event.getVersion(), event.getMotd(), event.getMaxPlayers(), event.getPlayersOnline());
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byte[] bytes = response.getBytes(StandardCharsets.UTF_16BE);
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output.writeShort(response.length());
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output.write(bytes);
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client_socket.close();
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state = ClientState.DISCONNECTED;
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}
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@SuppressWarnings("unused")
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int handShakeId = DataTypeIO.readVarInt(input);
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PacketHandshakingIn handshake = new PacketHandshakingIn(input);
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boolean isBungeecord = Limbo.getInstance().getServerProperties().isBungeecord();
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String bungeeForwarding = handshake.getServerAddress();
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UUID bungeeUUID = null;
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SkinResponse bungeeSkin = null;
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switch (handshake.getHandshakeType()) {
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case STATUS:
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state = ClientState.STATUS;
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while (client_socket.isConnected()) {
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DataTypeIO.readVarInt(input);
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int packetId = DataTypeIO.readVarInt(input);
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Class<? extends Packet> packetType = Packet.getStatusIn().get(packetId);
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if (packetType == null) {
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//do nothing
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} else if (packetType.equals(PacketStatusInRequest.class)) {
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String str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort();
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Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Handshake Status has pinged");
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ServerProperties p = Limbo.getInstance().getServerProperties();
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StatusPingEvent event = Limbo.getInstance().getEventsManager().callEvent(new StatusPingEvent(this, p.getVersionString(), p.getProtocol(), ComponentSerializer.parse(p.getMotdJson()), p.getMaxPlayers(), Limbo.getInstance().getPlayers().size(), p.getFavicon().orElse(null)));
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PacketStatusOutResponse packet = new PacketStatusOutResponse(Limbo.getInstance().buildServerListResponseJson(event.getVersion(), event.getProtocol(), event.getMotd(), event.getMaxPlayers(), event.getPlayersOnline(), event.getFavicon()));
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sendPacket(packet);
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} else if (packetType.equals(PacketStatusInPing.class)) {
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PacketStatusInPing ping = new PacketStatusInPing(input);
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PacketStatusOutPong packet = new PacketStatusOutPong(ping.getPayload());
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sendPacket(packet);
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break;
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}
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}
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break;
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case LOGIN:
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state = ClientState.LOGIN;
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if (isBungeecord) {
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try {
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String[] data = bungeeForwarding.split("\\x00");
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//String host = data[0];
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String ip = data[1];
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bungeeUUID = UUID.fromString(data[2].replaceFirst("([0-9a-fA-F]{8})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]{4})([0-9a-fA-F]+)", "$1-$2-$3-$4-$5"));
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inetAddress = InetAddress.getByName(ip);
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if (data.length > 3) {
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String skinJson = data[3];
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String skin = skinJson.split("\"value\":\"")[1].split("\"")[0];
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String signature = skinJson.split("\"signature\":\"")[1].split("\"")[0];
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bungeeSkin = new SkinResponse(skin, signature);
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}
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} catch (Exception e) {
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Limbo.getInstance().getConsole().sendMessage("If you wish to use bungeecord's IP forwarding, please enable that in your bungeecord config.yml as well!");
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disconnectDuringLogin(new BaseComponent[] {new TextComponent(ChatColor.RED + "Please connect from the proxy!")});
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}
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}
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while (client_socket.isConnected()) {
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int size = DataTypeIO.readVarInt(input);
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int packetId = DataTypeIO.readVarInt(input);
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Class<? extends Packet> packetType = Packet.getLoginIn().get(packetId);
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if (packetType == null) {
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input.skipBytes(size - DataTypeIO.getVarIntLength(packetId));
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} else if (packetType.equals(PacketLoginInLoginStart.class)) {
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PacketLoginInLoginStart start = new PacketLoginInLoginStart(input);
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String username = start.getUsername();
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UUID uuid = isBungeecord ? bungeeUUID : UUID.nameUUIDFromBytes(("OfflinePlayer:" + username).getBytes(StandardCharsets.UTF_8));
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PacketLoginOutLoginSuccess success = new PacketLoginOutLoginSuccess(uuid, username);
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sendPacket(success);
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state = ClientState.PLAY;
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player = new Player(this, username, uuid, Limbo.getInstance().getNextEntityId(), Limbo.getInstance().getServerProperties().getWorldSpawn(), new PlayerInteractManager());
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player.setSkinLayers((byte) (0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x40));
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Limbo.getInstance().addPlayer(player);
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break;
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} else {
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input.skipBytes(size - DataTypeIO.getVarIntLength(packetId));
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}
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}
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PlayerLoginEvent event = Limbo.getInstance().getEventsManager().callEvent(new PlayerLoginEvent(this, false));
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if (event.isCancelled()) {
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disconnectDuringLogin(event.getCancelReason());
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}
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break;
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}
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if (state == ClientState.PLAY) {
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TimeUnit.MILLISECONDS.sleep(500);
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ServerProperties p = Limbo.getInstance().getServerProperties();
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PacketPlayOutLogin join = new PacketPlayOutLogin(player.getEntityId(), false, p.getDefaultGamemode(), Limbo.getInstance().getWorlds().stream().map(each -> new NamespacedKey(each.getName()).toString()).collect(Collectors.toList()).toArray(new String[Limbo.getInstance().getWorlds().size()]), Limbo.getInstance().getDimensionRegistry().getCodec(), p.getWorldSpawn().getWorld(), 0, (byte) p.getMaxPlayers(), 8, p.isReducedDebugInfo(), true, false, true);
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sendPacket(join);
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Limbo.getInstance().getUnsafe().setPlayerGameModeSilently(player, p.getDefaultGamemode());
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Location s = p.getWorldSpawn();
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//PacketPlayOutKeepAlive alive = new PacketPlayOutKeepAlive((long) (Math.random() * Long.MAX_VALUE));
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World world = s.getWorld();
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player.playerInteractManager.update();
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SkinResponse skinresponce = isBungeecord && bungeeSkin != null ? bungeeSkin : MojangAPIUtils.getSkinFromMojangServer(player.getName());
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PlayerSkinProperty skin = skinresponce != null ? new PlayerSkinProperty(skinresponce.getSkin(), skinresponce.getSignature()) : null;
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PacketPlayOutPlayerInfo info = new PacketPlayOutPlayerInfo(PlayerInfoAction.ADD_PLAYER, player.getUniqueId(), new PlayerInfoData.PlayerInfoDataAddPlayer(player.getName(), Optional.ofNullable(skin), p.getDefaultGamemode(), 0, false, Optional.empty()));
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sendPacket(info);
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/*
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for (ClientConnection client : Limbo.getInstance().getServerConnection().getClients()) {
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DataOutputStream other = new DataOutputStream(client.getSocket().getOutputStream());
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DataTypeIO.writeVarInt(other, packetByte.length);
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other.write(packetByte);
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}
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*/
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Set<PlayerAbilityFlags> flags = new HashSet<>();
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if (p.isAllowFlight()) {
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flags.add(PlayerAbilityFlags.FLY);
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}
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if (player.getGamemode().equals(GameMode.CREATIVE)) {
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flags.add(PlayerAbilityFlags.CREATIVE);
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}
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PacketPlayOutPlayerAbilities abilities = new PacketPlayOutPlayerAbilities(0.05F, 0.1F, flags.toArray(new PlayerAbilityFlags[flags.size()]));
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sendPacket(abilities);
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String str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort() + "|" + player.getName();
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Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Player had connected to the Limbo server!");
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PacketPlayOutDeclareCommands declare = DeclareCommands.getDeclareCommandsPacket(player);
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if (declare != null) {
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sendPacket(declare);
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}
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Limbo.getInstance().getEventsManager().callEvent(new PlayerJoinEvent(player));
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PacketPlayOutSpawnPosition spawnPos = new PacketPlayOutSpawnPosition(BlockPosition.from(s));
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sendPacket(spawnPos);
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PacketPlayOutPositionAndLook positionLook = new PacketPlayOutPositionAndLook(s.getX(), s.getY(), s.getZ(), s.getYaw(), s.getPitch(), 1);
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Limbo.getInstance().getUnsafe().setPlayerLocationSilently(player, new Location(world, s.getX(), s.getY(), s.getZ(), s.getYaw(), s.getPitch()));
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sendPacket(positionLook);
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player.getDataWatcher().update();
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PacketPlayOutEntityMetadata show = new PacketPlayOutEntityMetadata(player, false, Player.class.getDeclaredField("skinLayers"));
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sendPacket(show);
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ready = true;
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while (client_socket.isConnected()) {
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try {
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int size = DataTypeIO.readVarInt(input);
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int packetId = DataTypeIO.readVarInt(input);
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Class<? extends Packet> packetType = Packet.getPlayIn().get(packetId);
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//Limbo.getInstance().getConsole().sendMessage(packetId + " -> " + packetType);
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if (packetType == null) {
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input.skipBytes(size - DataTypeIO.getVarIntLength(packetId));
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} else if (packetType.equals(PacketPlayInPositionAndLook.class)) {
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PacketPlayInPositionAndLook pos = new PacketPlayInPositionAndLook(input);
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Location from = player.getLocation();
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Location to = new Location(player.getWorld(), pos.getX(), pos.getY(), pos.getZ(), pos.getYaw(), pos.getPitch());
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PlayerMoveEvent event = Limbo.getInstance().getEventsManager().callEvent(new PlayerMoveEvent(player, from, to));
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if (event.isCancelled()) {
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Location returnTo = event.getFrom();
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PacketPlayOutPositionAndLook cancel = new PacketPlayOutPositionAndLook(returnTo.getX(), returnTo.getY(), returnTo.getZ(), returnTo.getYaw(), returnTo.getPitch(), 1);
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sendPacket(cancel);
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} else {
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Limbo.getInstance().getUnsafe().setPlayerLocationSilently(player, event.getTo());
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PacketPlayOutUpdateViewPosition response = new PacketPlayOutUpdateViewPosition((int) player.getLocation().getX() >> 4, (int) player.getLocation().getZ() >> 4);
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sendPacket(response);
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}
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} else if (packetType.equals(PacketPlayInPosition.class)) {
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PacketPlayInPosition pos = new PacketPlayInPosition(input);
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Location from = player.getLocation();
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Location to = new Location(player.getWorld(), pos.getX(), pos.getY(), pos.getZ(), player.getLocation().getYaw(), player.getLocation().getPitch());
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PlayerMoveEvent event = Limbo.getInstance().getEventsManager().callEvent(new PlayerMoveEvent(player, from, to));
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if (event.isCancelled()) {
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Location returnTo = event.getFrom();
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PacketPlayOutPositionAndLook cancel = new PacketPlayOutPositionAndLook(returnTo.getX(), returnTo.getY(), returnTo.getZ(), returnTo.getYaw(), returnTo.getPitch(), 1);
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sendPacket(cancel);
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} else {
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Limbo.getInstance().getUnsafe().setPlayerLocationSilently(player, event.getTo());
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PacketPlayOutUpdateViewPosition response = new PacketPlayOutUpdateViewPosition((int) player.getLocation().getX() >> 4, (int) player.getLocation().getZ() >> 4);
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sendPacket(response);
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}
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} else if (packetType.equals(PacketPlayInRotation.class)) {
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PacketPlayInRotation pos = new PacketPlayInRotation(input);
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Location from = player.getLocation();
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Location to = new Location(player.getWorld(), player.getLocation().getX(), player.getLocation().getY(), player.getLocation().getZ(), pos.getYaw(), pos.getPitch());
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PlayerMoveEvent event = Limbo.getInstance().getEventsManager().callEvent(new PlayerMoveEvent(player, from, to));
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if (event.isCancelled()) {
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Location returnTo = event.getFrom();
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PacketPlayOutPositionAndLook cancel = new PacketPlayOutPositionAndLook(returnTo.getX(), returnTo.getY(), returnTo.getZ(), returnTo.getYaw(), returnTo.getPitch(), 1);
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sendPacket(cancel);
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} else {
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Limbo.getInstance().getUnsafe().setPlayerLocationSilently(player, event.getTo());
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PacketPlayOutUpdateViewPosition response = new PacketPlayOutUpdateViewPosition((int) player.getLocation().getX() >> 4, (int) player.getLocation().getZ() >> 4);
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sendPacket(response);
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}
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} else if (packetType.equals(PacketPlayInKeepAlive.class)) {
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PacketPlayInKeepAlive alive = new PacketPlayInKeepAlive(input);
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if (alive.getPayload() != getLastKeepAlivePayLoad()) {
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Limbo.getInstance().getConsole().sendMessage("Incorrect Payload recieved in KeepAlive packet for player " + player.getName());
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break;
|
|
}
|
|
} else if (packetType.equals(PacketPlayInTabComplete.class)) {
|
|
PacketPlayInTabComplete request = new PacketPlayInTabComplete(input);
|
|
String[] command = CustomStringUtils.splitStringToArgs(request.getText().substring(1));
|
|
|
|
List<TabCompleteMatches> matches = new ArrayList<TabCompleteMatches>();
|
|
|
|
matches.addAll(Limbo.getInstance().getPluginManager().getTabOptions(player, command).stream().map(each -> new TabCompleteMatches(each)).collect(Collectors.toList()));
|
|
|
|
int start = CustomStringUtils.getIndexOfArg(request.getText(), command.length - 1) + 1;
|
|
int length = command[command.length - 1].length();
|
|
|
|
PacketPlayOutTabComplete response = new PacketPlayOutTabComplete(request.getId(), start, length, matches.toArray(new TabCompleteMatches[matches.size()]));
|
|
sendPacket(response);
|
|
} else if (packetType.equals(PacketPlayInChat.class)) {
|
|
PacketPlayInChat chat = new PacketPlayInChat(input);
|
|
if (chat.getMessage().startsWith("/")) {
|
|
Limbo.getInstance().dispatchCommand(player, chat.getMessage());
|
|
} else {
|
|
player.chat(chat.getMessage());
|
|
}
|
|
} else {
|
|
input.skipBytes(size - DataTypeIO.getVarIntLength(packetId));
|
|
}
|
|
|
|
} catch (Exception e) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
Limbo.getInstance().getEventsManager().callEvent(new PlayerQuitEvent(player));
|
|
|
|
str = client_socket.getInetAddress().getHostName() + ":" + client_socket.getPort() + "|" + player.getName();
|
|
Limbo.getInstance().getConsole().sendMessage("[/" + str + "] <-> Player had disconnected!");
|
|
|
|
}
|
|
|
|
} catch (Exception e) {e.printStackTrace();}
|
|
|
|
try {
|
|
client_socket.close();
|
|
} catch (IOException e) {}
|
|
state = ClientState.DISCONNECTED;
|
|
|
|
if (player != null) {
|
|
Limbo.getInstance().removePlayer(player);
|
|
}
|
|
Limbo.getInstance().getServerConnection().getClients().remove(this);
|
|
running = false;
|
|
}
|
|
}
|