├── .gitignore ├── API ├── pom.xml └── src │ └── main │ └── java │ └── ai │ └── medusa │ └── api │ ├── check │ ├── CheckInfo.java │ └── MedusaCheck.java │ └── listener │ ├── MedusaFlagEvent.java │ └── MedusaSendAlertEvent.java ├── ExampleAPI ├── pom.xml └── src │ └── main │ ├── java │ └── ai │ │ └── medusa │ │ └── exampleapi │ │ ├── ExamplePlugin.java │ │ └── listener │ │ └── ExampleListener.java │ └── resources │ └── plugin.yml ├── Impl ├── pom.xml └── src │ └── main │ ├── java │ └── ai │ │ └── medusa │ │ └── anticheat │ │ ├── Medusa.java │ │ ├── MedusaPlugin.java │ │ ├── check │ │ ├── Check.java │ │ └── impl │ │ │ ├── combat │ │ │ ├── aimassist │ │ │ │ ├── AimAssistA.java │ │ │ │ ├── AimAssistB.java │ │ │ │ ├── AimAssistC.java │ │ │ │ ├── AimAssistD.java │ │ │ │ ├── AimAssistE.java │ │ │ │ ├── AimAssistF.java │ │ │ │ ├── AimAssistG.java │ │ │ │ ├── AimAssistH.java │ │ │ │ └── AimAssistI.java │ │ │ ├── autoclicker │ │ │ │ ├── AutoClickerA.java │ │ │ │ ├── AutoClickerB.java │ │ │ │ ├── AutoClickerC.java │ │ │ │ └── AutoClickerD.java │ │ │ ├── hitbox │ │ │ │ └── HitBoxA.java │ │ │ ├── killaura │ │ │ │ ├── KillAuraA.java │ │ │ │ ├── KillAuraB.java │ │ │ │ ├── KillAuraC.java │ │ │ │ ├── KillAuraD.java │ │ │ │ ├── KillAuraE.java │ │ │ │ ├── KillAuraF.java │ │ │ │ └── KillAuraG.java │ │ │ ├── reach │ │ │ │ ├── ReachA.java │ │ │ │ └── ReachB.java │ │ │ └── velocity │ │ │ │ └── VelocityA.java │ │ │ ├── movement │ │ │ ├── fastclimb │ │ │ │ └── FastClimbA.java │ │ │ ├── fly │ │ │ │ ├── FlyA.java │ │ │ │ ├── FlyB.java │ │ │ │ └── FlyC.java │ │ │ ├── jesus │ │ │ │ ├── JesusA.java │ │ │ │ └── JesusB.java │ │ │ ├── motion │ │ │ │ ├── MotionA.java │ │ │ │ ├── MotionB.java │ │ │ │ ├── MotionC.java │ │ │ │ ├── MotionD.java │ │ │ │ └── MotionE.java │ │ │ ├── noslow │ │ │ │ └── NoSlowA.java │ │ │ ├── phase │ │ │ │ └── PhaseA.java │ │ │ └── speed │ │ │ │ ├── SpeedA.java │ │ │ │ ├── SpeedB.java │ │ │ │ └── SpeedC.java │ │ │ └── player │ │ │ ├── hand │ │ │ └── HandA.java │ │ │ ├── inventory │ │ │ ├── InventoryA.java │ │ │ └── InventoryB.java │ │ │ ├── protocol │ │ │ ├── ProtocolA.java │ │ │ ├── ProtocolB.java │ │ │ ├── ProtocolC.java │ │ │ ├── ProtocolD.java │ │ │ ├── ProtocolE.java │ │ │ ├── ProtocolF.java │ │ │ ├── ProtocolG.java │ │ │ ├── ProtocolH.java │ │ │ ├── ProtocolI.java │ │ │ └── ProtocolJ.java │ │ │ ├── scaffold │ │ │ ├── ScaffoldA.java │ │ │ ├── ScaffoldB.java │ │ │ ├── ScaffoldC.java │ │ │ └── ScaffoldD.java │ │ │ └── timer │ │ │ ├── TimerA.java │ │ │ ├── TimerB.java │ │ │ └── TimerC.java │ │ ├── command │ │ ├── CommandInfo.java │ │ ├── CommandManager.java │ │ ├── MedusaCommand.java │ │ └── impl │ │ │ ├── Alerts.java │ │ │ ├── Debug.java │ │ │ ├── Info.java │ │ │ ├── Theme.java │ │ │ └── Violations.java │ │ ├── config │ │ ├── Config.java │ │ └── ConfigValue.java │ │ ├── data │ │ ├── PlayerData.java │ │ └── processor │ │ │ ├── ActionProcessor.java │ │ │ ├── ClickProcessor.java │ │ │ ├── CombatProcessor.java │ │ │ ├── PositionProcessor.java │ │ │ ├── RotationProcessor.java │ │ │ └── VelocityProcessor.java │ │ ├── exempt │ │ ├── ExemptProcessor.java │ │ └── type │ │ │ └── ExemptType.java │ │ ├── listener │ │ ├── BukkitEventListener.java │ │ ├── ClientBrandListener.java │ │ ├── JoinQuitListener.java │ │ └── NetworkListener.java │ │ ├── manager │ │ ├── CheckManager.java │ │ ├── PlayerDataManager.java │ │ ├── ThemeManager.java │ │ └── TickManager.java │ │ ├── packet │ │ ├── Packet.java │ │ └── processor │ │ │ ├── ReceivingPacketProcessor.java │ │ │ └── SendingPacketProcessor.java │ │ └── util │ │ ├── ColorUtil.java │ │ ├── HitboxExpansion.java │ │ ├── MathUtil.java │ │ ├── PlayerUtil.java │ │ ├── ReflectionUtil.java │ │ ├── ServerUtil.java │ │ ├── anticheat │ │ ├── AlertUtil.java │ │ └── PunishUtil.java │ │ └── type │ │ ├── BoundingBox.java │ │ ├── CustomLocation.java │ │ ├── EvictingList.java │ │ ├── Pair.java │ │ └── RayTrace.java │ └── resources │ ├── config.yml │ └── plugin.yml ├── LICENSE ├── README.md └── pom.xml /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ 2 | *.iml 3 | 4 | *.jar 5 | *.class 6 | 7 | */target -------------------------------------------------------------------------------- /API/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | Medusa 7 | ai.medusa 8 | 1.0 9 | 10 | 4.0.0 11 | 12 | API 13 | jar 14 | 1.1.6 15 | 16 | 17 | 18 | 19 | org.apache.maven.plugins 20 | maven-compiler-plugin 21 | 3.7.0 22 | 23 | 8 24 | 8 25 | -XDignore.symbol.file 26 | 27 | 28 | 29 | 30 | 31 | src/main/resources 32 | true 33 | 34 | 35 | 36 | 37 | -------------------------------------------------------------------------------- /API/src/main/java/ai/medusa/api/check/CheckInfo.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.api.check; 2 | 3 | import java.lang.annotation.Retention; 4 | import java.lang.annotation.RetentionPolicy; 5 | 6 | @Retention(RetentionPolicy.RUNTIME) 7 | public @interface CheckInfo { 8 | String name(); 9 | String description(); 10 | boolean experimental() default false; 11 | } 12 | -------------------------------------------------------------------------------- /API/src/main/java/ai/medusa/api/check/MedusaCheck.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.api.check; 2 | 3 | public interface MedusaCheck { 4 | 5 | CheckInfo getCheckInfo(); 6 | 7 | String getPunishCommand(); 8 | 9 | boolean isEnabled(); 10 | 11 | int getMaxVl(); 12 | 13 | int getVl(); 14 | 15 | long getLastFlagTime(); 16 | } -------------------------------------------------------------------------------- /API/src/main/java/ai/medusa/api/listener/MedusaFlagEvent.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.api.listener; 2 | 3 | import ai.medusa.api.check.MedusaCheck; 4 | import lombok.Getter; 5 | import lombok.Setter; 6 | import org.bukkit.entity.Player; 7 | import org.bukkit.event.Cancellable; 8 | import org.bukkit.event.Event; 9 | import org.bukkit.event.HandlerList; 10 | 11 | public final class MedusaFlagEvent extends Event implements Cancellable { 12 | 13 | private boolean cancelled; 14 | 15 | private final Player player; 16 | private final MedusaCheck check; 17 | 18 | 19 | public MedusaFlagEvent(Player player, MedusaCheck check) { 20 | super(true); 21 | this.player = player; 22 | this.check = check; 23 | this.cancelled = false; 24 | } 25 | 26 | public Player getPlayer() { 27 | return player; 28 | } 29 | 30 | public MedusaCheck getCheck() { 31 | return check; 32 | } 33 | 34 | private static final HandlerList handlers = new HandlerList(); 35 | 36 | public HandlerList getHandlers() { 37 | return handlers; 38 | } 39 | 40 | public static HandlerList getHandlerList() { 41 | return handlers; 42 | } 43 | 44 | @Override 45 | public boolean isCancelled() { 46 | return cancelled; 47 | } 48 | 49 | @Override 50 | public void setCancelled(final boolean b) { 51 | cancelled = b; 52 | } 53 | } -------------------------------------------------------------------------------- /API/src/main/java/ai/medusa/api/listener/MedusaSendAlertEvent.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.api.listener; 2 | 3 | import ai.medusa.api.check.MedusaCheck; 4 | import lombok.Getter; 5 | import lombok.Setter; 6 | import net.md_5.bungee.api.chat.TextComponent; 7 | import org.bukkit.entity.Player; 8 | import org.bukkit.event.Cancellable; 9 | import org.bukkit.event.Event; 10 | import org.bukkit.event.HandlerList; 11 | 12 | public class MedusaSendAlertEvent extends Event implements Cancellable { 13 | private boolean cancelled; 14 | private final Player player; 15 | private final TextComponent message; 16 | private final MedusaCheck check; 17 | private final String info; 18 | 19 | public MedusaSendAlertEvent(final TextComponent message, final Player player, final MedusaCheck check, final String info) { 20 | super(true); 21 | this.player = player; 22 | this.message = message; 23 | this.check = check; 24 | this.info = info; 25 | this.cancelled = false; 26 | } 27 | 28 | private static final HandlerList handlers = new HandlerList(); 29 | 30 | public HandlerList getHandlers() { 31 | return handlers; 32 | } 33 | 34 | public static HandlerList getHandlerList() { 35 | return handlers; 36 | } 37 | 38 | public Player getPlayer() { 39 | return player; 40 | } 41 | 42 | public TextComponent getMessage() { 43 | return message; 44 | } 45 | 46 | public MedusaCheck getCheck() { 47 | return check; 48 | } 49 | 50 | public String getInfo() { 51 | return info; 52 | } 53 | 54 | @Override 55 | public boolean isCancelled() { 56 | return cancelled; 57 | } 58 | 59 | @Override 60 | public void setCancelled(final boolean b) { 61 | cancelled = b; 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /ExampleAPI/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | Medusa 7 | ai.medusa 8 | 1.0 9 | 10 | 4.0.0 11 | 12 | ExampleAPI 13 | 14 | 15 | 16 | 17 | org.apache.maven.plugins 18 | maven-compiler-plugin 19 | 3.7.0 20 | 21 | 8 22 | 8 23 | -XDignore.symbol.file 24 | 25 | 26 | 27 | org.apache.maven.plugins 28 | maven-shade-plugin 29 | 3.1.0 30 | 31 | 32 | package 33 | 34 | shade 35 | 36 | 37 | false 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | src/main/resources 46 | true 47 | 48 | 49 | 50 | 51 | 52 | 53 | ai.medusa 54 | API 55 | 1.1.6 56 | 57 | 58 | 59 | -------------------------------------------------------------------------------- /ExampleAPI/src/main/java/ai/medusa/exampleapi/ExamplePlugin.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.exampleapi; 2 | 3 | import ai.medusa.exampleapi.listener.ExampleListener; 4 | import org.bukkit.Bukkit; 5 | import org.bukkit.plugin.java.JavaPlugin; 6 | 7 | public final class ExamplePlugin extends JavaPlugin { 8 | 9 | @Override 10 | public void onEnable() { 11 | Bukkit.getServer().getPluginManager().registerEvents(new ExampleListener(), this); 12 | Bukkit.broadcastMessage("Started ExamplePlugin using MedusaAPI"); 13 | } 14 | 15 | @Override 16 | public void onDisable() { 17 | } 18 | } 19 | -------------------------------------------------------------------------------- /ExampleAPI/src/main/java/ai/medusa/exampleapi/listener/ExampleListener.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.exampleapi.listener; 2 | 3 | import ai.medusa.api.check.MedusaCheck; 4 | import ai.medusa.api.listener.MedusaFlagEvent; 5 | import org.bukkit.Bukkit; 6 | import org.bukkit.entity.Player; 7 | import org.bukkit.event.EventHandler; 8 | import org.bukkit.event.Listener; 9 | 10 | public final class ExampleListener implements Listener { 11 | @EventHandler 12 | public void onMedusaFlag(final MedusaFlagEvent event) { 13 | final Player player = event.getPlayer(); 14 | final MedusaCheck check = event.getCheck(); 15 | final boolean cancelled = event.isCancelled(); 16 | 17 | Bukkit.broadcastMessage(player.getName() + " flagged " + check.getCheckInfo().name()); 18 | } 19 | } 20 | -------------------------------------------------------------------------------- /ExampleAPI/src/main/resources/plugin.yml: -------------------------------------------------------------------------------- 1 | name: ExampleAPI 2 | version: 1.0 3 | main: ai.medusa.exampleapi.ExamplePlugin 4 | authors: [infinitesm] 5 | description: API usage example of Medusa Anticheat API 6 | -------------------------------------------------------------------------------- /Impl/pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | Medusa 7 | ai.medusa 8 | 1.0 9 | 10 | 4.0.0 11 | 12 | Impl 13 | 14 | 15 | 16 | 17 | org.apache.maven.plugins 18 | maven-compiler-plugin 19 | 3.7.0 20 | 21 | 8 22 | 8 23 | -XDignore.symbol.file 24 | 25 | 26 | 27 | org.apache.maven.plugins 28 | maven-shade-plugin 29 | 3.1.0 30 | 31 | 32 | package 33 | 34 | shade 35 | 36 | 37 | false 38 | Medusa 39 | 40 | 41 | io.github.retrooper.packetevents 42 | ai.medusa.anticheat.packetevents 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | src/main/resources 53 | true 54 | 55 | 56 | 57 | 58 | 59 | 60 | ai.medusa 61 | API 62 | 1.1.6 63 | 64 | 65 | com.github.retrooper 66 | packetevents 67 | 1.8-pre-9 68 | 69 | 70 | 71 | 72 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/Medusa.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat; 2 | 3 | import ai.medusa.anticheat.listener.BukkitEventListener; 4 | import ai.medusa.anticheat.listener.ClientBrandListener; 5 | import ai.medusa.anticheat.listener.NetworkListener; 6 | import ai.medusa.anticheat.listener.JoinQuitListener; 7 | import ai.medusa.anticheat.manager.CheckManager; 8 | import ai.medusa.anticheat.manager.PlayerDataManager; 9 | import ai.medusa.anticheat.manager.ThemeManager; 10 | import ai.medusa.anticheat.manager.TickManager; 11 | import ai.medusa.anticheat.manager.*; 12 | import io.github.retrooper.packetevents.PacketEvents; 13 | import lombok.Getter; 14 | import ai.medusa.anticheat.command.CommandManager; 15 | import ai.medusa.anticheat.config.Config; 16 | import ai.medusa.anticheat.packet.processor.ReceivingPacketProcessor; 17 | import ai.medusa.anticheat.packet.processor.SendingPacketProcessor; 18 | import org.bukkit.Bukkit; 19 | import org.bukkit.plugin.messaging.Messenger; 20 | import java.util.concurrent.ExecutorService; 21 | import java.util.concurrent.Executors; 22 | 23 | @Getter 24 | public enum Medusa { 25 | 26 | INSTANCE; 27 | 28 | private MedusaPlugin plugin; 29 | 30 | private long startTime; 31 | 32 | private final TickManager tickManager = new TickManager(); 33 | private final ReceivingPacketProcessor receivingPacketProcessor = new ReceivingPacketProcessor(); 34 | private final SendingPacketProcessor sendingPacketProcessor = new SendingPacketProcessor(); 35 | private final PlayerDataManager playerDataManager = new PlayerDataManager(); 36 | private final CommandManager commandManager = new CommandManager(this.getPlugin()); 37 | private final ExecutorService packetExecutor = Executors.newSingleThreadExecutor(); 38 | 39 | public void start(final MedusaPlugin plugin) { 40 | this.plugin = plugin; 41 | assert plugin != null : "Error while starting Medusa."; 42 | 43 | this.getPlugin().saveDefaultConfig(); 44 | Config.updateConfig(); 45 | 46 | CheckManager.setup(); 47 | ThemeManager.setup(); 48 | 49 | Bukkit.getOnlinePlayers().forEach(player -> this.getPlayerDataManager().add(player)); 50 | 51 | getPlugin().saveDefaultConfig(); 52 | getPlugin().getCommand("medusa").setExecutor(commandManager); 53 | 54 | tickManager.start(); 55 | 56 | final Messenger messenger = Bukkit.getMessenger(); 57 | messenger.registerIncomingPluginChannel(plugin, "MC|Brand", new ClientBrandListener()); 58 | 59 | startTime = System.currentTimeMillis(); 60 | 61 | Bukkit.getServer().getPluginManager().registerEvents(new BukkitEventListener(), plugin); 62 | Bukkit.getServer().getPluginManager().registerEvents(new ClientBrandListener(), plugin); 63 | Bukkit.getServer().getPluginManager().registerEvents(new JoinQuitListener(), plugin); 64 | 65 | PacketEvents.get().registerListener(new NetworkListener()); 66 | } 67 | 68 | public void stop(final MedusaPlugin plugin) { 69 | this.plugin = plugin; 70 | assert plugin != null : "Error while shutting down Medusa."; 71 | 72 | tickManager.stop(); 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/MedusaPlugin.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat; 2 | 3 | import io.github.retrooper.packetevents.PacketEvents; 4 | import io.github.retrooper.packetevents.utils.server.ServerVersion; 5 | import org.bukkit.plugin.java.JavaPlugin; 6 | 7 | public final class MedusaPlugin extends JavaPlugin { 8 | 9 | @Override 10 | public void onLoad() { 11 | PacketEvents.create(this).getSettings() 12 | .checkForUpdates(true) 13 | .backupServerVersion(ServerVersion.v_1_8_8); 14 | 15 | PacketEvents.get().load(); 16 | } 17 | 18 | @Override 19 | public void onEnable() { 20 | PacketEvents.get().init(); 21 | Medusa.INSTANCE.start(this); 22 | } 23 | 24 | @Override 25 | public void onDisable() { 26 | PacketEvents.get().terminate(); 27 | Medusa.INSTANCE.stop(this); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/Check.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.api.check.MedusaCheck; 5 | import ai.medusa.api.listener.MedusaFlagEvent; 6 | import ai.medusa.anticheat.config.Config; 7 | import ai.medusa.anticheat.util.anticheat.PunishUtil; 8 | import ai.medusa.anticheat.data.PlayerData; 9 | import ai.medusa.anticheat.exempt.type.ExemptType; 10 | import ai.medusa.anticheat.util.anticheat.AlertUtil; 11 | import ai.medusa.anticheat.packet.Packet; 12 | 13 | import lombok.AccessLevel; 14 | import lombok.Getter; 15 | import lombok.Setter; 16 | 17 | import org.bukkit.Bukkit; 18 | import org.bukkit.ChatColor; 19 | import org.bukkit.Material; 20 | 21 | import java.util.Objects; 22 | 23 | @Getter 24 | @Setter 25 | public abstract class Check implements MedusaCheck { 26 | 27 | //Data for check. 28 | public final PlayerData data; 29 | 30 | //Check data from config. 31 | private final boolean enabled; 32 | private final int maxVl; 33 | private final String punishCommand; 34 | 35 | //Check information. 36 | private int vl; 37 | private long lastFlagTime; 38 | private CheckType checkType; 39 | private boolean debugging; 40 | @Getter(AccessLevel.NONE) @Setter(AccessLevel.NONE) 41 | public double buffer; 42 | 43 | //Because I'm lazy to change the annotation again. 44 | public String justTheName; 45 | public char type; 46 | 47 | public Check(final PlayerData data) { 48 | this.data = data; 49 | 50 | this.enabled = Config.ENABLED_CHECKS.contains(this.getClass().getSimpleName()); 51 | this.maxVl = Config.MAX_VIOLATIONS.get(this.getClass().getSimpleName()); 52 | this.punishCommand = Config.PUNISH_COMMANDS.get(this.getClass().getSimpleName()); 53 | 54 | this.checkType = CheckType.fromPackageName(this.getClass().getPackage().getName()); 55 | 56 | this.justTheName = this.getCheckInfo().name().split("\\(")[0].replace(" ", ""); 57 | this.type = this.getCheckInfo().name().split("\\(")[1].split("\\)")[0].replaceAll(" ", "").toCharArray()[0]; 58 | } 59 | 60 | public abstract void handle(final Packet packet); 61 | 62 | public void fail(final Object info) { 63 | final MedusaFlagEvent event = new MedusaFlagEvent(data.getPlayer(), this); 64 | Bukkit.getPluginManager().callEvent(event); 65 | if (event.isCancelled()) return; 66 | 67 | vl++; 68 | 69 | switch (this.getCheckType()) { 70 | case COMBAT: 71 | data.setCombatViolations(data.getCombatViolations() + 1); 72 | break; 73 | case MOVEMENT: 74 | data.setMovementViolations(data.getMovementViolations() + 1); 75 | break; 76 | case PLAYER: 77 | data.setPlayerViolations(data.getPlayerViolations() + 1); 78 | break; 79 | } 80 | 81 | data.setTotalViolations(data.getTotalViolations() + 1); 82 | 83 | if (System.currentTimeMillis() - lastFlagTime > Config.ALERT_COOLDOWN && vl >= Config.MIN_VL_TO_ALERT) { 84 | AlertUtil.handleAlert(this, data, Objects.toString(info)); 85 | this.lastFlagTime = System.currentTimeMillis(); 86 | } 87 | 88 | if (vl > maxVl) { 89 | PunishUtil.punish(this, data); 90 | } 91 | } 92 | 93 | public void fail() { 94 | fail("No info"); 95 | } 96 | 97 | protected boolean isExempt(final ExemptType exemptType) { 98 | return data.getExemptProcessor().isExempt(exemptType); 99 | } 100 | 101 | protected boolean isExempt(final ExemptType...exemptTypes) { 102 | return data.getExemptProcessor().isExempt(exemptTypes); 103 | } 104 | 105 | protected long now() { 106 | return System.currentTimeMillis(); 107 | } 108 | 109 | public CheckInfo getCheckInfo() { 110 | if (this.getClass().isAnnotationPresent(CheckInfo.class)) { 111 | return this.getClass().getAnnotation(CheckInfo.class); 112 | } else { 113 | System.err.println("CheckInfo annotation hasn't been added to the class " + this.getClass().getSimpleName() + "."); 114 | } 115 | return null; 116 | } 117 | 118 | public void debug(final Object... objects) { 119 | if (isDebugging()) { 120 | for (final Object object : objects) { 121 | data.getPlayer().sendMessage(ChatColor.GREEN + "[Medusa-Debug] " + ChatColor.GRAY + object); 122 | } 123 | } 124 | } 125 | 126 | public void debugToConsole(final Object... objects) { 127 | if (isDebugging()) { 128 | for (final Object object : objects) { 129 | System.out.println(ChatColor.GREEN + "[Medusa-Debug] " + ChatColor.GRAY + object); 130 | } 131 | } 132 | } 133 | 134 | public enum CheckType { 135 | COMBAT("Combat"), 136 | MOVEMENT("Movement"), 137 | PLAYER("Player"); 138 | 139 | private final String name; 140 | 141 | CheckType(String name) { 142 | this.name = name; 143 | } 144 | 145 | public String getName() { 146 | return this.name; 147 | } 148 | 149 | public static CheckType fromPackageName(String packageName) { 150 | for (CheckType checkType : CheckType.values()) { 151 | if (packageName.contains(checkType.getName().toLowerCase())) { 152 | return checkType; 153 | } 154 | } 155 | return null; 156 | } 157 | } 158 | 159 | public boolean isBridging() { 160 | return data.getPlayer().getLocation().clone().subtract(0, 2, 0).getBlock().getType() == Material.AIR; 161 | } 162 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | import java.util.function.Predicate; 10 | 11 | /** 12 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.aim by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "AimAssist (A)", description = "Checks for irregular movements in the rotation.") 16 | public final class AimAssistA extends Check { 17 | 18 | private final Predicate validRotation = rotation -> rotation > 3F && rotation < 35F; 19 | 20 | public AimAssistA(final PlayerData data) { 21 | super(data); 22 | } 23 | 24 | @Override 25 | public void handle(final Packet packet) { 26 | if (packet.isRotation()) { 27 | final float deltaPitch = Math.abs(data.getRotationProcessor().getDeltaPitch()); 28 | final float deltaYaw = Math.abs(data.getRotationProcessor().getDeltaYaw() % 360F); 29 | 30 | final float pitch = Math.abs(data.getRotationProcessor().getPitch()); 31 | 32 | final boolean invalidPitch = deltaPitch < 0.007 && validRotation.test(deltaYaw); 33 | final boolean invalidYaw = deltaYaw < 0.007 && validRotation.test(deltaPitch); 34 | 35 | final boolean exempt = isExempt(ExemptType.INSIDE_VEHICLE); 36 | final boolean invalid = !exempt && (invalidPitch || invalidYaw) && pitch < 89F; 37 | 38 | debug(String.format("deltaYaw=%.2f, deltaPitch=%.2f", deltaYaw, deltaPitch)); 39 | 40 | if (invalid) { 41 | if (++buffer > 20) { 42 | fail(String.format("deltaYaw=%.2f, deltaPitch=%.2f", deltaYaw, deltaPitch)); 43 | } 44 | } else { 45 | buffer = 0; 46 | } 47 | } 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.combat.aim by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "AimAssist (B)", description = "Checks for rounded rotation.") 14 | public final class AimAssistB extends Check { 15 | 16 | public AimAssistB(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isRotation()) { 23 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw() % 360F; 24 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 25 | 26 | final boolean exempt = isExempt(ExemptType.TELEPORT); 27 | 28 | final boolean invalid = !exempt 29 | && (deltaPitch % 1 == 0 || deltaYaw % 1 == 0) && deltaPitch != 0 && deltaYaw != 0; 30 | 31 | debug(String.format("teleport=%b, buffer=%.2f", exempt, buffer)); 32 | 33 | if (invalid) { 34 | if (++buffer > 4) { 35 | fail(String.format("buffer=%.2f", buffer)); 36 | } 37 | } else { 38 | buffer = Math.max(0, buffer - 0.25); 39 | } 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.aim by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "AimAssist (C)", description = "Checks for constant rotation.", experimental = true) 14 | public final class AimAssistC extends Check { 15 | 16 | public AimAssistC(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isRotation()) { 23 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw(); 24 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 25 | 26 | final double yawAccel = data.getRotationProcessor().getJoltYaw(); 27 | final double pitchAccel = data.getRotationProcessor().getJoltPitch(); 28 | 29 | final boolean exempt = isExempt(ExemptType.TELEPORT, ExemptType.CINEMATIC); 30 | final boolean invalidYaw = yawAccel < 0.1 && Math.abs(deltaYaw) > 1.5F; 31 | final boolean invalidPitch = pitchAccel < 0.1 && Math.abs(deltaPitch) > 1.5F; 32 | 33 | final String info = String.format( 34 | "dY=%.2f, dP=%.2f, yA=%.2f, pA=%.2f", 35 | deltaYaw, deltaPitch, yawAccel, pitchAccel 36 | ); 37 | 38 | debug(info); 39 | 40 | if ((invalidPitch || invalidYaw) && !exempt) { 41 | if (++buffer > 8) { 42 | fail(info); 43 | } 44 | } else { 45 | buffer -= buffer > 0 ? 1 : 0; 46 | } 47 | } 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.anticheat.data.processor.RotationProcessor; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.api.check.CheckInfo; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | 10 | /** 11 | * Created on Package xyz.elevated.frequency.check.impl.aimassist by Elevated. 12 | * 13 | * This is one of the most powerful aim checks on Medusa. Just to clarify, it was created by Elevated, and taken from 14 | * Frequency with permission. This check makes sure each rotation has a GCD (greatest common divisor). Because of 15 | * how sensitivity works in Minecraft, every rotation is divisible by a specific constant. Because of this, I have 16 | * been able to get sensitivity from rotations in RotationProcesssor. If the rotation does not have a constant, this 17 | * check flags. 18 | * 19 | * @see RotationProcessor 20 | * 21 | * https://github.com/ElevatedDev/Frequency/blob/master/src/main/java/xyz/elevated/frequency/check/impl/aimassist/AimAssistE.java 22 | */ 23 | 24 | @CheckInfo(name = "AimAssist (D)", description = "Checks for a divisor in the rotation.") 25 | public final class AimAssistD extends Check { 26 | 27 | private float lastDeltaYaw, lastDeltaPitch; 28 | 29 | public AimAssistD(final PlayerData data) { 30 | super(data); 31 | } 32 | 33 | @Override 34 | public void handle(final Packet packet) { 35 | if (packet.isRotation()) { 36 | if (data.getRotationProcessor().isCinematic()) return; 37 | 38 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw() % 360F; 39 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 40 | 41 | final double divisorYaw = MathUtil.getGcd((long) (deltaYaw * MathUtil.EXPANDER), (long) (lastDeltaYaw * MathUtil.EXPANDER)); 42 | final double divisorPitch = MathUtil.getGcd((long) (deltaPitch * MathUtil.EXPANDER), (long) (lastDeltaPitch * MathUtil.EXPANDER)); 43 | 44 | final double constantYaw = divisorYaw / MathUtil.EXPANDER; 45 | final double constantPitch = divisorPitch / MathUtil.EXPANDER; 46 | 47 | final double currentX = deltaYaw / constantYaw; 48 | final double currentY = deltaPitch / constantPitch; 49 | 50 | final double previousX = lastDeltaYaw / constantYaw; 51 | final double previousY = lastDeltaPitch / constantPitch; 52 | 53 | if (deltaYaw > 0.0 && deltaPitch > 0.0 && deltaYaw < 20.f && deltaPitch < 20.f) { 54 | final double moduloX = currentX % previousX; 55 | final double moduloY = currentY % previousY; 56 | 57 | final double floorModuloX = Math.abs(Math.floor(moduloX) - moduloX); 58 | final double floorModuloY = Math.abs(Math.floor(moduloY) - moduloY); 59 | 60 | final boolean invalidX = moduloX > 90.d && floorModuloX > 0.1; 61 | final boolean invalidY = moduloY > 90.d && floorModuloY > 0.1; 62 | 63 | final String info = String.format( 64 | "mx=%.2f, my=%.2f, fmx=%.2f, fmy=%.2f", 65 | moduloX, moduloY, floorModuloX, floorModuloY 66 | ); 67 | 68 | debug(info); 69 | 70 | if (invalidX && invalidY) { 71 | if (++buffer > 6) { 72 | fail(info); 73 | } 74 | } else { 75 | buffer -= buffer > 0 ? 1 : 0; 76 | } 77 | } 78 | 79 | this.lastDeltaYaw = deltaYaw; 80 | this.lastDeltaPitch = deltaPitch; 81 | } 82 | } 83 | } 84 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistE.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | 10 | /** 11 | * Created 12/06/2020 Package ai.medusa.anticheat.check.impl.combat.aimassist by infinitesm 12 | */ 13 | 14 | @CheckInfo(name = "AimAssist (E)", description = "Checks for a valid sensitivity in the rotation.") 15 | public final class AimAssistE extends Check { 16 | 17 | public AimAssistE(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isRotation()) { 24 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 25 | final float lastDeltaPitch = data.getRotationProcessor().getLastDeltaPitch(); 26 | 27 | final long expandedDeltaPitch = (long) (deltaPitch * MathUtil.EXPANDER); 28 | final long expandedLastDeltaPitch = (long) (lastDeltaPitch * MathUtil.EXPANDER); 29 | 30 | final long gcd = MathUtil.getGcd(expandedDeltaPitch, expandedLastDeltaPitch); 31 | 32 | final boolean exempt = deltaPitch == 0 33 | || lastDeltaPitch == 0 34 | || isExempt(ExemptType.CINEMATIC); 35 | 36 | debug("gcd=" + gcd + " cinematic=" + isExempt(ExemptType.CINEMATIC) + " buf=" + buffer); 37 | 38 | if (!exempt && gcd < 131072L) { 39 | if (++buffer > 10) { 40 | fail("gcd=" + gcd + " buffer=" + buffer); 41 | } 42 | } else { 43 | buffer = Math.max(0, buffer - 1); 44 | } 45 | } 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistF.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created 11/14/2020 Package ai.medusa.anticheat.check.impl.combat.aim by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "AimAssist (F)", description = "Checks for impossible rotation.", experimental = true) 14 | public final class AimAssistF extends Check { 15 | 16 | public AimAssistF(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isRotation()) { 23 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw(); 24 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 25 | 26 | debug("tp=" + isExempt(ExemptType.TELEPORT)); 27 | 28 | if (deltaPitch == 0 && deltaYaw == 0 && !isExempt(ExemptType.TELEPORT)) fail(); 29 | } 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistG.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | import ai.medusa.anticheat.util.type.EvictingList; 10 | 11 | /** 12 | * Created on 11/15/2020 Package ai.medusa.anticheat.check.impl.combat.aim by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "AimAssist (G)" , description = "Checks for extremely smooth rotations.", experimental = true) 16 | public final class AimAssistG extends Check { 17 | 18 | private final EvictingList yawAccelSamples = new EvictingList<>(20); 19 | private final EvictingList pitchAccelSamples = new EvictingList<>(20); 20 | 21 | public AimAssistG(final PlayerData data) { 22 | super(data); 23 | } 24 | 25 | @Override 26 | public void handle(final Packet packet) { 27 | if (packet.isRotation() && !isExempt(ExemptType.CINEMATIC)) { 28 | final float yawAccel = data.getRotationProcessor().getJoltYaw(); 29 | final float pitchAccel = data.getRotationProcessor().getJoltPitch(); 30 | 31 | yawAccelSamples.add(yawAccel); 32 | pitchAccelSamples.add(pitchAccel); 33 | 34 | if (yawAccelSamples.isFull() && pitchAccelSamples.isFull()) { 35 | final double yawAccelAverage = MathUtil.getAverage(yawAccelSamples); 36 | final double pitchAccelAverage = MathUtil.getAverage(pitchAccelSamples); 37 | 38 | final double yawAccelDeviation = MathUtil.getStandardDeviation(yawAccelSamples); 39 | final double pitchAccelDeviation = MathUtil.getStandardDeviation(pitchAccelSamples); 40 | 41 | final boolean exemptRotation = data.getRotationProcessor().getDeltaYaw() < 1.5F; 42 | 43 | final boolean averageInvalid = yawAccelAverage < 1 || pitchAccelAverage < 1 && !exemptRotation; 44 | final boolean deviationInvalid = yawAccelDeviation < 5 && pitchAccelDeviation > 5 && !exemptRotation; 45 | 46 | debug(String.format( 47 | "yaa=%.2f, paa=%.2f, yad=%.2f, pad=%.2f, buf=%.2f", 48 | yawAccelAverage, pitchAccelAverage, yawAccelDeviation, pitchAccelDeviation, buffer 49 | )); 50 | 51 | if (averageInvalid && deviationInvalid) { 52 | buffer = Math.min(buffer + 1, 20); 53 | if (buffer > 8) { 54 | fail(String.format( 55 | "yaa=%.2f, paa=%.2f, yad=%.2f, pad=%.2f", 56 | yawAccelAverage, pitchAccelAverage, yawAccelDeviation, pitchAccelDeviation 57 | )); 58 | } 59 | } else { 60 | buffer -= buffer > 0 ? 0.75 : 0; 61 | } 62 | } 63 | } 64 | } 65 | } 66 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistH.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | import ai.medusa.anticheat.util.type.EvictingList; 10 | import org.bukkit.Location; 11 | import org.bukkit.entity.Entity; 12 | import org.bukkit.entity.Player; 13 | import org.bukkit.util.Vector; 14 | 15 | @CheckInfo(name = "AimAssist (H)", description = "Checks for a generic flaw in aim assistance tools.", experimental = true) 16 | public class AimAssistH extends Check { 17 | 18 | private final EvictingList differenceSamples = new EvictingList<>(25); 19 | 20 | public AimAssistH(final PlayerData data) { 21 | super(data); 22 | } 23 | 24 | @Override 25 | public void handle(final Packet packet) { 26 | if (packet.isRotation() && isExempt(ExemptType.COMBAT)) { 27 | final Player player = data.getPlayer(); 28 | final Entity target = data.getCombatProcessor().getTarget(); 29 | 30 | if (target != null) { 31 | final Location origin = player.getLocation().clone(); 32 | final Vector end = target.getLocation().clone().toVector(); 33 | 34 | final float optimalYaw = origin.setDirection(end.subtract(origin.toVector())).getYaw() % 360F; 35 | final float rotationYaw = data.getRotationProcessor().getYaw(); 36 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw(); 37 | final float fixedRotYaw = (rotationYaw % 360F + 360F) % 360F; 38 | 39 | final double difference = Math.abs(fixedRotYaw - optimalYaw); 40 | 41 | if (deltaYaw > 3f) { 42 | differenceSamples.add(difference); 43 | } 44 | if (differenceSamples.isFull()) { 45 | final double average = MathUtil.getAverage(differenceSamples); 46 | final double deviation = MathUtil.getStandardDeviation(differenceSamples); 47 | 48 | final boolean invalid = average < 7 && deviation < 12; 49 | 50 | if (invalid) { 51 | if (++buffer > 15) { 52 | fail(String.format("dev=%.2f, avg=%.2f, buf=%.2f", deviation, average, buffer)); 53 | } 54 | } else { 55 | buffer -= buffer > 0 ? 1 : 0; 56 | } 57 | 58 | debug("avg=" + average + " deviation=" + deviation + " buf=" + buffer); 59 | } 60 | } 61 | } 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/aimassist/AimAssistI.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.aimassist; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | @CheckInfo(name = "AimAssist (I)", description = "Checks for snappy rotations.", experimental = true) 9 | public class AimAssistI extends Check { 10 | 11 | private float lastDeltaYaw, lastLastDeltaYaw; 12 | 13 | public AimAssistI(final PlayerData data) { 14 | super(data); 15 | } 16 | 17 | @Override 18 | public void handle(final Packet packet) { 19 | if (packet.isRotation()) { 20 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw(); 21 | 22 | debug("dy=" + deltaYaw + " ldy=" + lastDeltaYaw + " lldy=" + lastLastDeltaYaw); 23 | 24 | if (deltaYaw < 2F && lastDeltaYaw > 30F && lastLastDeltaYaw < 2F) { 25 | final double low = (deltaYaw + lastLastDeltaYaw) / 2; 26 | final double high = lastDeltaYaw; 27 | 28 | fail(String.format("low=%.2f, high=%.2f", low, high)); 29 | } 30 | 31 | lastLastDeltaYaw = lastDeltaYaw; 32 | lastDeltaYaw = deltaYaw; 33 | } 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/autoclicker/AutoClickerA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.autoclicker; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.exempt.type.ExemptType; 8 | import ai.medusa.anticheat.packet.Packet; 9 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 10 | 11 | /** 12 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.autoclicker by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "AutoClicker (A)", description = "Checks for attack speed.") 16 | public final class AutoClickerA extends Check { 17 | 18 | private int ticks, cps; 19 | private static final ConfigValue maxCps = new ConfigValue(ConfigValue.ValueType.INTEGER, "max-cps"); 20 | 21 | public AutoClickerA(final PlayerData data) { 22 | super(data); 23 | } 24 | 25 | @Override 26 | public void handle(final Packet packet) { 27 | if (packet.isFlying()) { 28 | if (++ticks >= 25) { 29 | debug("cps=" + cps); 30 | if (cps > maxCps.getInt() && !isExempt(ExemptType.AUTO_CLICKER)) { 31 | fail("cps=" + cps); 32 | } 33 | ticks = cps = 0; 34 | } 35 | } else if (packet.isUseEntity()) { 36 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 37 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 38 | ++cps; 39 | } 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/autoclicker/AutoClickerB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.autoclicker; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | 10 | import java.util.ArrayDeque; 11 | 12 | /** 13 | * Created on 12/30/2020 Package ai.medusa.anticheat.check.impl.combat.autoclicker by infinitesm 14 | */ 15 | @CheckInfo(name = "AutoClicker (B)", description = "Simple change in statistics check.") 16 | public final class AutoClickerB extends Check { 17 | 18 | private int ticks; 19 | private double lastDev, lastSkew, lastKurt; 20 | private ArrayDeque samples = new ArrayDeque<>(); 21 | 22 | public AutoClickerB(final PlayerData data) { 23 | super(data); 24 | } 25 | 26 | @Override 27 | public void handle(final Packet packet) { 28 | if (packet.isArmAnimation() && !isExempt(ExemptType.AUTO_CLICKER)) { 29 | if (ticks < 4) { 30 | samples.add(ticks); 31 | } 32 | 33 | if (samples.size() == 120) { 34 | final double deviation = MathUtil.getStandardDeviation(samples); 35 | final double skewness = MathUtil.getSkewness(samples); 36 | final double kurtosis = MathUtil.getKurtosis(samples); 37 | 38 | final double deltaDeviation = Math.abs(deviation - lastDev); 39 | final double deltaSkewness = Math.abs(skewness - lastSkew); 40 | final double deltaKurtosis = Math.abs(kurtosis - lastKurt); 41 | 42 | debug("dd=" + deltaDeviation + " ds=" + deltaSkewness + " dk=" + deltaKurtosis); 43 | 44 | if (deltaDeviation < 0.01 || deltaSkewness < 0.01 || deltaKurtosis < 0.01) { 45 | if ((buffer += 10) > 50) { 46 | fail("dd=" + deltaDeviation + " ds=" + deltaSkewness + " dk=" + deltaKurtosis); 47 | } 48 | } else { 49 | buffer = Math.max(buffer - 8, 0); 50 | } 51 | 52 | lastDev = deviation; 53 | lastSkew = skewness; 54 | lastKurt = kurtosis; 55 | 56 | samples.clear(); 57 | } 58 | 59 | ticks = 0; 60 | } else if (packet.isFlying()) { 61 | ++ticks; 62 | } 63 | } 64 | } 65 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/autoclicker/AutoClickerC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.autoclicker; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | 10 | import java.util.ArrayDeque; 11 | 12 | @CheckInfo(name = "AutoClicker (C)", experimental = true, description = "Checks for rounded(ish) CPS.") 13 | public final class AutoClickerC extends Check { 14 | 15 | private final ArrayDeque samples = new ArrayDeque<>(); 16 | private int ticks; 17 | 18 | public AutoClickerC(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isArmAnimation() && !isExempt(ExemptType.AUTO_CLICKER)) { 25 | 26 | if (ticks < 4) { 27 | samples.add(ticks); 28 | } 29 | 30 | if (samples.size() == 50) { 31 | 32 | final double cps = MathUtil.getCps(samples); 33 | final double difference = Math.abs(Math.round(cps) - cps); 34 | 35 | debug("diff=" + difference + " cps=" + cps + " buf=" + buffer); 36 | 37 | if (difference < 0.001) { 38 | if ((buffer += 10) > 25) { 39 | fail("diff=" + difference); 40 | } 41 | } else { 42 | buffer = Math.max(buffer - 8, 0); 43 | } 44 | 45 | samples.clear(); 46 | } 47 | 48 | ticks = 0; 49 | } else if (packet.isFlying()) { 50 | ++ticks; 51 | } 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/autoclicker/AutoClickerD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.autoclicker; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | import ai.medusa.anticheat.util.type.Pair; 10 | 11 | import java.util.ArrayDeque; 12 | import java.util.List; 13 | 14 | /** 15 | * Created by Elevated. 16 | * @link https://github.com/ElevatedDev/Frequency/blob/master/src/main/java/xyz/elevated/frequency/check/impl/autoclicker/AutoClickerE.java 17 | */ 18 | 19 | @CheckInfo(name = "AutoClicker (D)", experimental = true, description = "Checks for consistency.") 20 | public final class AutoClickerD extends Check { 21 | 22 | private final ArrayDeque samples = new ArrayDeque<>(); 23 | private int ticks; 24 | 25 | public AutoClickerD(final PlayerData data) { 26 | super(data); 27 | } 28 | 29 | @Override 30 | public void handle(final Packet packet) { 31 | if (packet.isArmAnimation() && !isExempt(ExemptType.AUTO_CLICKER)) { 32 | if (ticks < 4) { 33 | samples.add(ticks); 34 | } 35 | 36 | if (samples.size() == 20) { 37 | final Pair, List> outlierPair = MathUtil.getOutliers(samples); 38 | 39 | final int outliers = outlierPair.getX().size() + outlierPair.getY().size(); 40 | final int duplicates = (int) (samples.size() - samples.stream().distinct().count()); 41 | 42 | debug("outliers=" + outliers + " dupl=" + duplicates); 43 | 44 | if (outliers < 2 && duplicates > 16) { 45 | if ((buffer += 10) > 50) { 46 | fail("outliers=" + outliers + " dupl=" + duplicates); 47 | } 48 | } else { 49 | buffer = Math.max(buffer - 8, 0); 50 | } 51 | samples.clear(); 52 | } 53 | 54 | ticks = 0; 55 | } else if (packet.isFlying()) { 56 | ++ticks; 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/hitbox/HitBoxA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.hitbox; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.Medusa; 5 | import ai.medusa.anticheat.check.Check; 6 | import ai.medusa.anticheat.config.ConfigValue; 7 | import ai.medusa.anticheat.data.PlayerData; 8 | import ai.medusa.anticheat.packet.Packet; 9 | import ai.medusa.anticheat.util.PlayerUtil; 10 | import ai.medusa.anticheat.util.type.BoundingBox; 11 | import ai.medusa.anticheat.util.type.RayTrace; 12 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 13 | import org.bukkit.GameMode; 14 | import org.bukkit.Location; 15 | import org.bukkit.entity.Entity; 16 | import org.bukkit.entity.Player; 17 | import org.bukkit.entity.Villager; 18 | import org.bukkit.util.NumberConversions; 19 | 20 | /** 21 | * Created on 10/26/2020 Package ai.medusa.anticheat.check.impl.combat.reach by infinitesm 22 | */ 23 | 24 | @CheckInfo(name = "HitBox (A)", experimental = true, description = "Checks for the angle of the attack.") 25 | public final class HitBoxA extends Check { 26 | 27 | private static final ConfigValue maxLatency = new ConfigValue(ConfigValue.ValueType.LONG, "max-latency"); 28 | private static final ConfigValue raytraceSensitivityLevel = new ConfigValue( 29 | ConfigValue.ValueType.INTEGER, "raytrace-sensitivity-level" 30 | ); 31 | 32 | public HitBoxA(final PlayerData data) { 33 | super(data); 34 | } 35 | 36 | @Override 37 | public void handle(final Packet packet) { 38 | if (packet.isUseEntity()) { 39 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 40 | 41 | final Entity target = data.getCombatProcessor().getTarget(); 42 | final Entity lastTarget = data.getCombatProcessor().getLastTarget(); 43 | 44 | if (wrapper.getAction() != WrappedPacketInUseEntity.EntityUseAction.ATTACK 45 | || data.getPlayer().getGameMode() != GameMode.SURVIVAL 46 | || !(target instanceof Player || target instanceof Villager) 47 | || target != lastTarget 48 | || !data.getTargetLocations().isFull() 49 | || PlayerUtil.getPing(data.getPlayer()) > (maxLatency.getLong() < 0 ? Integer.MAX_VALUE : maxLatency.getLong())) return; 50 | 51 | final int ticks = Medusa.INSTANCE.getTickManager().getTicks(); 52 | final int pingTicks = NumberConversions.floor(data.getActionProcessor().getPing() / 50.0) + 3; 53 | 54 | final RayTrace rayTrace = new RayTrace(data.getPlayer()); 55 | 56 | final int collided = (int) data.getTargetLocations().stream() 57 | .filter(pair -> Math.abs(ticks - pair.getY() - pingTicks) < 3) 58 | .filter(pair -> { 59 | final Location location = pair.getX(); 60 | final BoundingBox boundingBox = new BoundingBox( 61 | location.getX() - 0.4, 62 | location.getX() + 0.4, 63 | location.getY(), 64 | location.getY() + 1.9, 65 | location.getZ() - 0.4, 66 | location.getZ() + 0.4 67 | ); 68 | 69 | return boundingBox.collidesD(rayTrace, 0, 6) != 10; 70 | }).count(); 71 | 72 | final int sensitivity = raytraceSensitivityLevel.getInt(); 73 | 74 | debug("collided=" + collided + " sens=" + sensitivity + " buf=" + buffer); 75 | 76 | if (collided <= sensitivity) { 77 | if (++buffer > 10) { 78 | fail("collided=" + collided + " buffer=" + buffer); 79 | } 80 | } else { 81 | buffer -= buffer > 0 ? 1 : 0; 82 | } 83 | } 84 | } 85 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.killaura by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "KillAura (A)", description = "Checks for packet order.") 13 | public final class KillAuraA extends Check { 14 | 15 | private boolean usedEntity; 16 | private long lastUseEntityTime; 17 | 18 | public KillAuraA(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isUseEntity()) { 25 | usedEntity = true; 26 | lastUseEntityTime = now(); 27 | } else if (packet.isFlying()) { 28 | if (usedEntity) { 29 | final long delay = now() - lastUseEntityTime; 30 | final boolean invalid = !data.getActionProcessor().isLagging() && delay > 15; 31 | 32 | debug("delay=" + delay); 33 | if (invalid) { 34 | if (++buffer > 2) { 35 | fail(String.format("delay=%d", delay)); 36 | } 37 | } else { 38 | buffer = Math.max(buffer - 0.15, 0); 39 | } 40 | } 41 | usedEntity = false; 42 | } 43 | } 44 | } 45 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import org.bukkit.entity.Entity; 9 | import org.bukkit.entity.EntityType; 10 | 11 | /** 12 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.killaura by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "KillAura (B)", description = "Checks for KeepSprint modules.") 16 | public final class KillAuraB extends Check { 17 | 18 | public KillAuraB(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isPosLook()) { 25 | if (data.getExemptProcessor().isExempt(ExemptType.COMBAT)) { 26 | final boolean sprinting = data.getActionProcessor().isSprinting(); 27 | final double deltaXZ = data.getPositionProcessor().getDeltaXZ(); 28 | final double lastDeltaXZ = data.getPositionProcessor().getLastDeltaXZ(); 29 | 30 | final double acceleration = Math.abs(deltaXZ - lastDeltaXZ); 31 | final long clickDelay = data.getClickProcessor().getDelay(); 32 | final Entity target = data.getCombatProcessor().getTarget(); 33 | 34 | final boolean invalid = acceleration < 0.0025 && 35 | deltaXZ > 0.22 && 36 | sprinting && 37 | clickDelay < 250 && 38 | target.getType() == EntityType.PLAYER; 39 | 40 | debug("a=" + acceleration + " dxz=" + deltaXZ + " cd=" + clickDelay); 41 | if (invalid) { 42 | if (++buffer > 5) { 43 | fail(String.format("acceleration=%.6f", acceleration)); 44 | buffer = Math.min(10, buffer); 45 | } 46 | } else { 47 | buffer = Math.max(buffer - 0.25, 0); 48 | } 49 | } 50 | } 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.killaura by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "KillAura (C)", description = "Checks for multi-aura.") 13 | public final class KillAuraC extends Check { 14 | 15 | public KillAuraC(final PlayerData data) { 16 | super(data); 17 | } 18 | 19 | @Override 20 | public void handle(final Packet packet) { 21 | if (packet.isUseEntity()) { 22 | final int targets = data.getCombatProcessor().getCurrentTargets(); 23 | 24 | debug("tg="+ targets); 25 | if (targets > 1) fail("tg=" + targets); 26 | } 27 | } 28 | } 29 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 9 | import org.bukkit.Location; 10 | 11 | /** 12 | * Created on 10/24/2020 Package ai.medusa.anticheat.check.impl.combat.killaura by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "KillAura (D)", description = "Checks for high accuracy.") 16 | public final class KillAuraD extends Check { 17 | 18 | private int hits, swings; 19 | private Location lastLocation; 20 | private Float lastYaw, lastPitch; 21 | 22 | public KillAuraD(final PlayerData data) { 23 | super(data); 24 | } 25 | 26 | @Override 27 | public void handle(final Packet packet) { 28 | if (packet.isUseEntity()) { 29 | 30 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 31 | final float yaw = data.getRotationProcessor().getYaw() % 360F; 32 | final float pitch = data.getRotationProcessor().getPitch(); 33 | final boolean isMoving = data.getPositionProcessor().getDeltaXZ() != 0; 34 | if (wrapper.getEntity() != null) { 35 | if (lastLocation != null && lastYaw != null && lastPitch != null) { 36 | if (wrapper.getEntity().getLocation().distance(lastLocation) > 0.1 37 | && lastYaw != yaw && lastPitch != pitch && isMoving 38 | && wrapper.getEntity().getWorld() == data.getPlayer().getWorld()) { 39 | ++hits; 40 | } 41 | } 42 | lastLocation = wrapper.getEntity().getLocation(); 43 | } 44 | lastYaw = yaw; 45 | lastPitch = pitch; 46 | } else if (packet.isArmAnimation()) { 47 | debug("swings=" + swings); 48 | if (++swings >= 50) { 49 | final double accuracy = hits/swings; 50 | debug("accuracy=" + accuracy); 51 | if (hits > 40) { 52 | if ((buffer += 10) > 20) { 53 | fail("accuracy=" + accuracy); 54 | } 55 | } else { 56 | buffer = Math.max(buffer - 2, 0); 57 | } 58 | hits = swings = 0; 59 | } 60 | } 61 | } 62 | } 63 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraE.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 8 | 9 | /** 10 | * Created on 07/01/2020 Package luna.anticheat.checks.player.badpackets by infinitesm 11 | */ 12 | @CheckInfo(name = "KillAura (E)", description = "Checks for no swing modules.") 13 | public final class KillAuraE extends Check { 14 | 15 | private int hits; 16 | 17 | public KillAuraE(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isUseEntity()) { 24 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 25 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 26 | debug("hits=" + hits); 27 | if (++hits > 2) { 28 | fail("ticks=" + hits); 29 | } 30 | } 31 | } else if (packet.isArmAnimation()) { 32 | hits = 0; 33 | } 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraF.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import org.bukkit.Location; 8 | import org.bukkit.entity.Entity; 9 | import org.bukkit.entity.Player; 10 | 11 | @CheckInfo(name = "KillAura (F)", experimental = true, description = "Checks for hit occlusion (wallhit).") 12 | public final class KillAuraF extends Check { 13 | 14 | private Location lastAttackerLocation; 15 | private float lastYaw, lastPitch; 16 | 17 | public KillAuraF(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isUseEntity()) { 24 | final Entity target = data.getCombatProcessor().getTarget(); 25 | final Player attacker = data.getPlayer(); 26 | 27 | if (target == null || attacker == null) return; 28 | if (target.getWorld() != attacker.getWorld()) return; 29 | 30 | final Location attackerLocation = attacker.getLocation(); 31 | 32 | final float yaw = data.getRotationProcessor().getYaw() % 360F; 33 | final float pitch = data.getRotationProcessor().getPitch(); 34 | 35 | if (lastAttackerLocation != null) { 36 | final boolean check = yaw != lastYaw && 37 | pitch != lastPitch && 38 | attackerLocation.distance(lastAttackerLocation) > 0.1; 39 | 40 | debug("buffer=" + buffer); 41 | 42 | if (check && !attacker.hasLineOfSight(target)) { 43 | if ((buffer += 10) > 50) { 44 | fail("buffer=" + buffer); 45 | } 46 | } else { 47 | buffer = Math.max(buffer - 20, 0); 48 | } 49 | } 50 | 51 | lastAttackerLocation = attacker.getLocation(); 52 | 53 | lastYaw = yaw; 54 | lastPitch = pitch; 55 | } 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/killaura/KillAuraG.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.killaura; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | @CheckInfo(name = "KillAura (G)", description = "Checks for large head movements without decelerating.", experimental = true) 10 | public class KillAuraG extends Check { 11 | 12 | public KillAuraG(final PlayerData data) { 13 | super(data); 14 | } 15 | 16 | @Override 17 | public void handle(final Packet packet) { 18 | if (packet.isPosLook() && isExempt(ExemptType.COMBAT)) { 19 | final double deltaXz = data.getPositionProcessor().getDeltaXZ(); 20 | final double lastDeltaXz = data.getPositionProcessor().getLastDeltaXZ(); 21 | final double accelXz = Math.abs(deltaXz - lastDeltaXz); 22 | 23 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw(); 24 | 25 | debug("accel=" + accelXz + " dY=" + deltaYaw); 26 | 27 | if (deltaYaw > 35 && accelXz < 0.00001) { 28 | fail(String.format("accel=%.6f, dY=%.2f", accelXz, deltaYaw)); 29 | } 30 | } 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/reach/ReachA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.reach; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.Medusa; 5 | import ai.medusa.anticheat.check.Check; 6 | import ai.medusa.anticheat.config.ConfigValue; 7 | import ai.medusa.anticheat.data.PlayerData; 8 | import ai.medusa.anticheat.packet.Packet; 9 | import ai.medusa.anticheat.util.HitboxExpansion; 10 | import ai.medusa.anticheat.util.PlayerUtil; 11 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 12 | import org.bukkit.GameMode; 13 | import org.bukkit.entity.Entity; 14 | import org.bukkit.entity.LivingEntity; 15 | import org.bukkit.util.NumberConversions; 16 | import org.bukkit.util.Vector; 17 | 18 | /** 19 | * Created on 10/26/2020 Package ai.medusa.anticheat.check.impl.combat.reach by infinitesm 20 | * 21 | * Fix stupid HitboxExpansion using NMS. 22 | */ 23 | 24 | @CheckInfo(name = "Reach (A)", description = "Checks for attacking distance.") 25 | public final class ReachA extends Check { 26 | 27 | private static final ConfigValue maxReach = new ConfigValue(ConfigValue.ValueType.DOUBLE, "max-reach"); 28 | private static final ConfigValue maxThreshold = new ConfigValue(ConfigValue.ValueType.DOUBLE, "max-threshold"); 29 | private static final ConfigValue thresholdDecay = new ConfigValue(ConfigValue.ValueType.DOUBLE, "threshold-decay"); 30 | private static final ConfigValue maxLatency = new ConfigValue(ConfigValue.ValueType.LONG, "max-latency"); 31 | 32 | public ReachA(final PlayerData data) { 33 | super(data); 34 | } 35 | 36 | @Override 37 | public void handle(final Packet packet) { 38 | if (packet.isUseEntity()) { 39 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 40 | 41 | final Entity target = data.getCombatProcessor().getTarget(); 42 | final Entity lastTarget = data.getCombatProcessor().getLastTarget(); 43 | 44 | if (wrapper.getAction() != WrappedPacketInUseEntity.EntityUseAction.ATTACK 45 | || data.getPlayer().getGameMode() != GameMode.SURVIVAL 46 | || !(target instanceof LivingEntity) 47 | || target != lastTarget 48 | || !data.getTargetLocations().isFull() 49 | || PlayerUtil.getPing(data.getPlayer()) > (maxLatency.getLong() < 0 ? Integer.MAX_VALUE : maxLatency.getLong())) return; 50 | 51 | final int ticks = Medusa.INSTANCE.getTickManager().getTicks(); 52 | final int pingTicks = NumberConversions.floor(data.getActionProcessor().getPing() / 50.0) + 3; 53 | 54 | final Vector player = data.getPlayer().getLocation().toVector().setY(0); 55 | 56 | final double distance = data.getTargetLocations().stream() 57 | .filter(pair -> Math.abs(ticks - pair.getY() - pingTicks) < 3) 58 | .mapToDouble(pair -> { 59 | final Vector victim = pair.getX().toVector().setY(0); 60 | final double expansion = HitboxExpansion.getExpansion(target); 61 | return player.distance(victim) - expansion; 62 | }).min().orElse(0); 63 | 64 | if (distance == 0) return; 65 | 66 | debug("dist=" + distance + " buffer=" + buffer + " pt=" + pingTicks); 67 | if (distance > maxReach.getDouble()) { 68 | if (++buffer > maxThreshold.getDouble()) { 69 | fail(String.format("reach=%.2f, buffer=%.2f", distance, buffer)); 70 | } 71 | } else { 72 | buffer = Math.max(buffer - thresholdDecay.getDouble(), 0); 73 | } 74 | } 75 | } 76 | 77 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/reach/ReachB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.reach; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.HitboxExpansion; 9 | import ai.medusa.anticheat.util.PlayerUtil; 10 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 11 | import org.bukkit.GameMode; 12 | import org.bukkit.util.Vector; 13 | 14 | @CheckInfo(name = "Reach (B)", experimental = true, description = "A basic verbose reach check.") 15 | public final class ReachB extends Check { 16 | 17 | private static final ConfigValue maxLatency = new ConfigValue(ConfigValue.ValueType.LONG, "max-latency"); 18 | private static final ConfigValue maxReach = new ConfigValue(ConfigValue.ValueType.DOUBLE, "max-reach"); 19 | 20 | public ReachB(final PlayerData data) { 21 | super(data); 22 | } 23 | 24 | @Override 25 | public void handle(final Packet packet) { 26 | if (packet.isUseEntity()) { 27 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 28 | 29 | if (data.getPlayer().getGameMode() != GameMode.SURVIVAL) return; 30 | if (PlayerUtil.getPing(data.getPlayer()) > (maxLatency.getLong() < 0 ? Integer.MAX_VALUE : maxLatency.getLong())) return; 31 | 32 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 33 | final Vector attacker = data.getPlayer().getLocation().toVector().setY(0); 34 | final Vector victim = data.getCombatProcessor().getTarget().getLocation().toVector().setY(0); 35 | 36 | final double expansion = HitboxExpansion.getExpansion(data.getCombatProcessor().getTarget()); 37 | final double distance = attacker.distance(victim) - expansion; 38 | 39 | debug("dist=" + distance + " buf=" + buffer); 40 | if (distance > maxReach.getDouble()) { 41 | if (++buffer > 20) { 42 | buffer = 20; 43 | fail(String.format("reach=%.2f, buffer=%.2f", distance, buffer)); 44 | } 45 | } else { 46 | buffer = Math.max(buffer - 4, 0); 47 | } 48 | } 49 | } 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/combat/velocity/VelocityA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.combat.velocity; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.exempt.type.ExemptType; 8 | import ai.medusa.anticheat.packet.Packet; 9 | 10 | /** 11 | * Created on 11/23/2020 Package ai.medusa.anticheat.check.impl.combat.velocity by infinitesm 12 | */ 13 | @CheckInfo(name = "Velocity (A)", experimental = true, description = "Checks for vertical velocity.") 14 | public final class VelocityA extends Check { 15 | 16 | private static final ConfigValue minVelPct = new ConfigValue( 17 | ConfigValue.ValueType.INTEGER, "minimum-velocity-percentage" 18 | ); 19 | private static final ConfigValue maxVelPct = new ConfigValue( 20 | ConfigValue.ValueType.INTEGER, "maximum-velocity-percentage" 21 | ); 22 | 23 | public VelocityA(final PlayerData data) { 24 | super(data); 25 | } 26 | 27 | @Override 28 | public void handle(final Packet packet) { 29 | if (packet.isFlying()) { 30 | if (data.getVelocityProcessor().getTicksSinceVelocity() < 5) { 31 | final double deltaY = data.getPositionProcessor().getDeltaY(); 32 | final double velocityY = data.getVelocityProcessor().getVelocityY(); 33 | 34 | debug("dy=" + deltaY + " vy=" + velocityY); 35 | if (velocityY > 0) { 36 | final int percentage = (int) Math.round((deltaY * 100.0) / velocityY); 37 | 38 | final boolean exempt = isExempt( 39 | ExemptType.LIQUID, ExemptType.PISTON, ExemptType.CLIMBABLE, 40 | ExemptType.UNDER_BLOCK, ExemptType.TELEPORT, ExemptType.FLYING, 41 | ExemptType.WEB, ExemptType.STEPPED 42 | ); 43 | 44 | final boolean invalid = !exempt 45 | && (percentage < minVelPct.getInt() || percentage > maxVelPct.getInt()); 46 | 47 | if (invalid) { 48 | if (++buffer > 5) { 49 | buffer = 0; 50 | fail("vy=" + velocityY + " pct=" + percentage); 51 | } 52 | } else { 53 | buffer = 0; 54 | } 55 | } 56 | } 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/fastclimb/FastClimbA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.fastclimb; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.PlayerUtil; 9 | import org.bukkit.potion.PotionEffectType; 10 | 11 | /** 12 | * Created on 10/26/2020 Package ai.medusa.anticheat.check.impl.movement.fastclimb by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "FastClimb (A)", description = "Checks if the player exceeds maximum ladder movement speed.") 16 | public final class FastClimbA extends Check { 17 | 18 | public FastClimbA(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isPosition() && !isExempt(ExemptType.TELEPORT)) { 25 | final boolean onGround = data.getPositionProcessor().isOnSolidGround(); 26 | final boolean onLadder = data.getPositionProcessor().isOnClimbable(); 27 | final double deltaY = data.getPositionProcessor().getDeltaY(); 28 | final double deltaDeltaY = Math.abs(data.getPositionProcessor().getDeltaY() - data.getPositionProcessor().getLastDeltaY()); 29 | final double maximumNonBufferDeltaY = 0.42F + PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.JUMP) * 0.1; 30 | //Creates an easy bypass. Replace this with collisions replaced from MCP. 31 | final boolean invalid = (!onGround && onLadder && deltaDeltaY == 0 && deltaY > 0.1177); 32 | final boolean fuckOff = deltaY > maximumNonBufferDeltaY && onLadder; 33 | 34 | /* 35 | * Using a buffer makes this check VERY easy to bypass. 36 | * This check should flag on the first tick. If you do not flag on the first tick, you run 37 | * the risk of insanely fast FastClimb bypasses. FIX THIS. 38 | */ 39 | 40 | debug("dy=" + deltaY); 41 | if (invalid) { 42 | if (++buffer > 2) { 43 | fail(String.format("dy=%.2f > 0.1176", deltaY)); 44 | } 45 | } else { 46 | buffer = Math.max(buffer - 0.5, 0); 47 | } 48 | 49 | if (fuckOff) fail(String.format("dy=%.2f > %.2f", deltaY, maximumNonBufferDeltaY)); 50 | } 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/fly/FlyA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.fly; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.fly by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "Fly (A)", description = "Checks for gravity.") 14 | public final class FlyA extends Check { 15 | 16 | public FlyA(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isPosition()) { 23 | final double deltaY = data.getPositionProcessor().getDeltaY(); 24 | final double lastDeltaY = data.getPositionProcessor().getLastDeltaY(); 25 | 26 | final boolean onGround = data.getPositionProcessor().getAirTicks() <= 5; 27 | 28 | final double prediction = Math.abs((lastDeltaY - 0.08) * 0.98F) < 0.005 ? -0.08 * 0.98F : (lastDeltaY - 0.08) * 0.98F; 29 | final double difference = Math.abs(deltaY - prediction); 30 | 31 | final boolean exempt = isExempt( 32 | ExemptType.TELEPORT, ExemptType.NEAR_VEHICLE, ExemptType.FLYING, 33 | ExemptType.INSIDE_VEHICLE, ExemptType.VELOCITY 34 | ); 35 | 36 | final boolean invalid = !exempt 37 | && difference > 0.001D 38 | && !onGround 39 | && !(data.getPositionProcessor().getY() % 0.5 == 0 && data.getPositionProcessor().isOnGround() && lastDeltaY < 0); 40 | 41 | debug("posY=" + data.getPositionProcessor().getY() + " dY=" + deltaY + " at=" + data.getPositionProcessor().getAirTicks()); 42 | 43 | if (invalid) { 44 | buffer += buffer < 50 ? 10 : 0; 45 | if (buffer > 20) { 46 | fail(String.format("diff=%.4f, buffer=%.2f, at=%o", difference, buffer, data.getPositionProcessor().getAirTicks())); 47 | } 48 | } else { 49 | buffer = Math.max(buffer - 0.75, 0); 50 | } 51 | } 52 | } 53 | } 54 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/fly/FlyB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.fly; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.fly by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "Fly (B)", description = "Checks for jumping mid-air.") 14 | public final class FlyB extends Check { 15 | 16 | private double lastAcceleration; 17 | 18 | public FlyB(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isPosition() && !isExempt(ExemptType.TELEPORT)) { 25 | final double acceleration = data.getPositionProcessor().getDeltaY() - data.getPositionProcessor().getLastDeltaY(); 26 | final double airTicks = data.getPositionProcessor().getAirTicks(); 27 | final double deltaY = data.getPositionProcessor().getDeltaY(); 28 | 29 | final boolean invalid = !isExempt( 30 | ExemptType.FLYING, ExemptType.VELOCITY, ExemptType.INSIDE_VEHICLE, ExemptType.NEAR_VEHICLE 31 | ) && lastAcceleration <= 0 && acceleration > 0 && deltaY > 0; 32 | 33 | debug("airTicks=" + airTicks + " accel=" + acceleration); 34 | if (airTicks > 10) { 35 | if (invalid) { 36 | fail(String.format("accel=%.2f, at=%.2f", acceleration, airTicks)); 37 | } 38 | } 39 | 40 | lastAcceleration = acceleration; 41 | } 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/fly/FlyC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.fly; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import io.github.retrooper.packetevents.packetwrappers.play.in.flying.WrappedPacketInFlying; 9 | 10 | /** 11 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.fly by infinitesm 12 | * 13 | * This is a decent nofall check however it's easily worked around by using the Flying packet and not the Position 14 | * packet to set on ground values. I would use Flying packet for this but it has a lot of false flag so Position 15 | * is the way to go here to be more stable. 16 | */ 17 | 18 | @CheckInfo(name = "Fly (C)", description = "Checks for ground-spoof.") 19 | public final class FlyC extends Check { 20 | 21 | public FlyC(final PlayerData data) { 22 | super(data); 23 | } 24 | 25 | @Override 26 | public void handle(final Packet packet) { 27 | if (packet.isPosition()) { 28 | final WrappedPacketInFlying wrapper = new WrappedPacketInFlying(packet.getRawPacket()); 29 | 30 | final boolean positionGround = wrapper.getY() % 0.015625 == 0; 31 | final boolean packetGround = wrapper.isOnGround(); 32 | 33 | final boolean exempt = isExempt(ExemptType.NEAR_VEHICLE, ExemptType.TELEPORT, ExemptType.CLIMBABLE, 34 | ExemptType.FLYING, ExemptType.JOINED, ExemptType.SLIME); 35 | 36 | debug(positionGround + " " + packetGround + " pos/packet"); 37 | 38 | if (!exempt && positionGround != packetGround) { 39 | if (++buffer > 4) { 40 | fail(); 41 | } 42 | } else { 43 | buffer = Math.max(buffer - 0.15, 0); 44 | } 45 | } 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/jesus/JesusA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.jesus; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import org.bukkit.Material; 9 | import org.bukkit.block.Block; 10 | import java.util.List; 11 | @CheckInfo(name = "Jesus (A)", description = "Checks for water friction.", experimental = true) 12 | public final class JesusA extends Check { 13 | 14 | private int ticks; 15 | 16 | public JesusA(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isPosition()) { 23 | final List blocks = data.getPositionProcessor().getBoundingBox().expand(1, 1, 1).getBlocks( 24 | data.getPlayer().getWorld() 25 | ); 26 | 27 | final boolean check = blocks.stream().noneMatch(block -> block.getType() != Material.AIR && !block.getType().toString().contains("WATER")) 28 | && blocks.stream().anyMatch(block -> block.getType().toString().contains("WATER")); 29 | 30 | if (check) { 31 | if ((ticks += 2) > 10) { 32 | final double prediction = data.getPositionProcessor().getLastDeltaXZ() * 0.8F; 33 | final double difference = Math.abs(data.getPositionProcessor().getLastDeltaXZ() - prediction); 34 | 35 | final boolean exempt = isExempt(ExemptType.TELEPORT, ExemptType.FLYING, ExemptType.INSIDE_VEHICLE); 36 | 37 | debug("diff=" + difference + " exempt=" + exempt + " buffer=" + buffer); 38 | if (difference > 0.04 && !exempt) { 39 | if ((buffer += 5) > 50) { 40 | fail("diff=" + difference); 41 | } 42 | } else { 43 | buffer = Math.max(buffer - 1, 0); 44 | } 45 | } 46 | } else { 47 | ticks -= ticks > 0 ? 1 : 0; 48 | } 49 | } 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/jesus/JesusB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.jesus; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | import ai.medusa.anticheat.util.PlayerUtil; 10 | import io.github.retrooper.packetevents.utils.player.ClientVersion; 11 | import org.bukkit.Material; 12 | import org.bukkit.block.Block; 13 | 14 | import java.util.List; 15 | 16 | @CheckInfo(name = "Jesus (B)", description = "Checks for irregular swimming accelerations.") 17 | public class JesusB extends Check { 18 | public JesusB(PlayerData data) { 19 | super(data); 20 | } 21 | 22 | private double lastAccel; 23 | 24 | @Override 25 | public void handle(Packet packet) { 26 | if (packet.isPosition()) { 27 | final List blocks = data.getPositionProcessor().getBlocks(); 28 | 29 | final boolean touchingLily = blocks.stream().anyMatch(block -> block.getType() == Material.WATER_LILY); 30 | final boolean touchingWater = data.getPositionProcessor().isInLiquid(); 31 | final boolean nearGround = data.getPositionProcessor().isOnSolidGround(); 32 | 33 | final boolean exempt = isExempt(ExemptType.VELOCITY, ExemptType.FLYING, ExemptType.DEPTH_STRIDER) 34 | || touchingLily 35 | || nearGround; 36 | 37 | final double deltaY = data.getPositionProcessor().getDeltaY(); 38 | final double lastDeltaY = data.getPositionProcessor().getLastDeltaY(); 39 | 40 | final double accel = Math.abs(deltaY - lastDeltaY); 41 | final double lastAccel = this.lastAccel; 42 | 43 | this.lastAccel = accel; 44 | 45 | final double diff = Math.abs(accel - lastAccel); 46 | 47 | final ClientVersion clientVersion = PlayerUtil.getClientVersion(data.getPlayer()); 48 | 49 | final boolean invalidAccel = diff == 0 50 | && clientVersion.isLowerThanOrEquals(ClientVersion.v_1_12_2) 51 | && Math.abs(deltaY) <= 0.05; 52 | 53 | final double deltaMax = clientVersion.isHigherThanOrEquals(ClientVersion.v_1_13) ? 0.45 : 0.101; 54 | 55 | final boolean invalidDelta = deltaY == 0 || MathUtil.isScientificNotation(deltaY) || deltaY > deltaMax; 56 | 57 | if (!exempt && touchingWater && (invalidAccel || invalidDelta)) { 58 | if (++buffer > 15) fail("dY= " + deltaY + " diff= " + diff); 59 | } else { 60 | buffer = Math.max(buffer - 0.5, 0); 61 | } 62 | } 63 | } 64 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/motion/MotionA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.motion; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.motion by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "Motion (A)", description = "Checks for constant vertical movement.") 14 | public final class MotionA extends Check { 15 | 16 | public MotionA(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isPosition()) { 23 | final boolean inAir = data.getPositionProcessor().isInAir(); 24 | 25 | final double deltaY = data.getPositionProcessor().getDeltaY(); 26 | final double lastDeltaY = data.getPositionProcessor().getLastDeltaY(); 27 | 28 | final double acceleration = Math.abs(deltaY - lastDeltaY); 29 | 30 | final boolean exempt = isExempt( 31 | ExemptType.JOINED, ExemptType.TRAPDOOR, ExemptType.VELOCITY, 32 | ExemptType.FLYING, ExemptType.WEB, ExemptType.TELEPORT, 33 | ExemptType.LIQUID, ExemptType.SLIME, ExemptType.CLIMBABLE, 34 | ExemptType.UNDER_BLOCK, ExemptType.SLAB, ExemptType.STAIRS 35 | ); 36 | 37 | if (acceleration == 0.0 && inAir && !exempt) { 38 | if ((buffer += 4) > 16) { 39 | fail(String.format("dy=%.2f", deltaY)); 40 | } 41 | } else { 42 | buffer = Math.max(buffer - 1, 0); 43 | } 44 | } 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/motion/MotionB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.motion; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.motion by infinitesm 11 | */ 12 | 13 | @CheckInfo(name = "Motion (B)", description = "Checks for fast-fall cheats.") 14 | public final class MotionB extends Check { 15 | 16 | public MotionB(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isPosition()) { 23 | final double deltaY = data.getPositionProcessor().getDeltaY(); 24 | 25 | debug("deltaY=" + deltaY); 26 | final boolean invalid = deltaY < -3.92 && 27 | !isExempt(ExemptType.TELEPORT, ExemptType.FLYING); 28 | 29 | if (invalid) fail(String.format("dy=%.2f", deltaY)); 30 | } 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/motion/MotionC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.motion; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.MathUtil; 9 | import ai.medusa.anticheat.util.PlayerUtil; 10 | import org.bukkit.potion.PotionEffectType; 11 | 12 | /** 13 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.motion by infinitesm 14 | */ 15 | 16 | @CheckInfo(name = "Motion (C)", description = "Checks for jump height/vertical movement threshold.") 17 | public final class MotionC extends Check { 18 | 19 | public MotionC(final PlayerData data) { 20 | super(data); 21 | } 22 | 23 | @Override 24 | public void handle(final Packet packet) { 25 | if (packet.isPosition()) { 26 | final double deltaY = data.getPositionProcessor().getDeltaY(); 27 | final double lastPosY = data.getPositionProcessor().getLastY(); 28 | final boolean onGround = data.getPositionProcessor().isOnGround(); 29 | 30 | final boolean step = MathUtil.mathOnGround(deltaY) && MathUtil.mathOnGround(lastPosY); 31 | 32 | final double expectedJumpMotion = 0.42F + (double) ((float) PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.JUMP) * 0.1F); 33 | 34 | final double maxHighJump = 0.42F + (double) ((float) PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.JUMP) * 0.1F) + 35 | (data.getVelocityProcessor().getTicksSinceVelocity() < 5 ? data.getVelocityProcessor().getVelocityY() > 0 ? data.getVelocityProcessor().getVelocityY() : 0 : 0); 36 | 37 | final boolean jumped = deltaY > 0 && lastPosY % (1D/64) == 0 && !onGround && !step; 38 | 39 | final boolean exempt = isExempt( 40 | ExemptType.INSIDE_VEHICLE, ExemptType.FLYING, ExemptType.SLIME, ExemptType.UNDER_BLOCK, 41 | ExemptType.PISTON, ExemptType.LIQUID, ExemptType.NEAR_VEHICLE, ExemptType.TELEPORT, 42 | ExemptType.WEB, ExemptType.TRAPDOOR 43 | ); 44 | 45 | debug("deltaY" + deltaY + " ejm=" + expectedJumpMotion + " mhj=" + maxHighJump + " step=" + step); 46 | //Mini-jump check. 47 | if (jumped && !exempt && !isExempt(ExemptType.VELOCITY)) { 48 | if (deltaY < expectedJumpMotion) { 49 | fail(String.format("ASC-L: %.2f < %.2f", deltaY, expectedJumpMotion)); 50 | } 51 | } 52 | 53 | //High-jump check. 54 | if (!exempt && !step) { 55 | //Patch for mid-air step glitch. 56 | if (deltaY > (data.getPositionProcessor().isOnGround() ? 0.6 : maxHighJump)) { 57 | fail(String.format( 58 | "ASC-H: %.2f > %.2f, onGround=%b", 59 | deltaY, expectedJumpMotion, data.getPositionProcessor().isOnGround() 60 | )); 61 | } 62 | } 63 | 64 | //Generic step check. 65 | if (step && !isExempt(ExemptType.TELEPORT)) { 66 | if (deltaY > 0.6F) { 67 | fail(String.format("ASC-S: %.2f > 0.6", deltaY)); 68 | } 69 | } 70 | } 71 | } 72 | } 73 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/motion/MotionD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.motion; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import org.bukkit.util.Vector; 9 | 10 | /** 11 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.motion by infinitesm 12 | */ 13 | 14 | @CheckInfo(name = "Motion (D)", description = "Checks for sprint direction.") 15 | public final class MotionD extends Check { 16 | 17 | private int teleportTicks; 18 | private int offGroundTicks; 19 | private final Vector direction = new Vector(0, 0, 0); 20 | 21 | public MotionD(final PlayerData data) { 22 | super(data); 23 | } 24 | 25 | @Override 26 | public void handle(final Packet packet) { 27 | if (packet.isFlying()) { 28 | if (data.getActionProcessor().isSprinting() && 29 | data.getVelocityProcessor().getTicksSinceVelocity() > 15 && 30 | ++teleportTicks > 10 && !data.getPlayer().isFlying()) { 31 | final double deltaX = data.getPositionProcessor().getX() - data.getPositionProcessor().getLastX(); 32 | final double deltaZ = data.getPositionProcessor().getZ() - data.getPositionProcessor().getLastZ(); 33 | 34 | final double directionX = -Math.sin(data.getPlayer().getEyeLocation().getYaw() * 3.1415927F / 180.0F) * (float) 1 * 0.5F; 35 | final double directionZ = Math.cos(data.getPlayer().getEyeLocation().getYaw() * 3.1415927F / 180.0F) * (float) 1 * 0.5F; 36 | 37 | final Vector positionDifference = new Vector(deltaX, 0, deltaZ); 38 | 39 | if (data.getPlayer().isOnGround()) { 40 | offGroundTicks = 0; 41 | direction.setX(directionX); 42 | direction.setY(0); 43 | direction.setZ(directionZ); 44 | } else { 45 | ++offGroundTicks; 46 | } 47 | 48 | final double angle = Math.toDegrees(positionDifference.angle(direction)); 49 | 50 | final boolean invalid = !data.getPositionProcessor().isInLiquid() 51 | && angle > 85 52 | && data.getPositionProcessor().getDeltaXZ() > 0.25 53 | && offGroundTicks < 8 54 | && !isExempt(ExemptType.TELEPORT, ExemptType.VELOCITY); 55 | 56 | debug("angle=" + angle + " dxz=" + data.getPositionProcessor().getDeltaXZ() + " buffer=" + buffer); 57 | if (invalid) { 58 | if (++buffer >= 8) { 59 | fail(String.format("angle=%.2f, buffer=%.2f", angle, buffer)); 60 | } 61 | } else { 62 | buffer = Math.max(buffer - 0.5, 0); 63 | } 64 | } 65 | } else if (packet.isTeleport()) { 66 | teleportTicks = 0; 67 | } 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/motion/MotionE.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.motion; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | 9 | /** 10 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.speed by infinitesm 11 | */ 12 | @CheckInfo(name = "Motion (E)", description = "Checks for switching direction mid-air.") 13 | public final class MotionE extends Check { 14 | 15 | public MotionE(final PlayerData data) { 16 | super(data); 17 | } 18 | 19 | @Override 20 | public void handle(final Packet packet) { 21 | if (packet.isPosition()) { 22 | final double deltaX = data.getPositionProcessor().getDeltaX(); 23 | final double lastDeltaX = data.getPositionProcessor().getLastDeltaX(); 24 | 25 | final double deltaZ = data.getPositionProcessor().getDeltaZ(); 26 | final double lastDeltaZ = data.getPositionProcessor().getLastDeltaZ(); 27 | 28 | final double absDeltaX = Math.abs(deltaX); 29 | final double absDeltaZ = Math.abs(deltaZ); 30 | 31 | final double absLastDeltaX = Math.abs(lastDeltaX); 32 | final double absLastDeltaZ = Math.abs(lastDeltaZ); 33 | 34 | if (data.getPositionProcessor().getAirTicks() > 2 && !isExempt(ExemptType.VELOCITY, ExemptType.NEAR_VEHICLE, ExemptType.TELEPORT, ExemptType.FLYING)) { 35 | final boolean xSwitched = (deltaX > 0 && lastDeltaX < 0) || (deltaX < 0 && lastDeltaX > 0); 36 | final boolean zSwitched = (deltaZ > 0 && lastDeltaZ < 0) || (deltaZ < 0 && lastDeltaZ > 0); 37 | 38 | if (xSwitched) { 39 | if (Math.abs(absDeltaX - absLastDeltaX) > 0.05) { 40 | if (++buffer > 1.25) { 41 | fail(); 42 | } 43 | } 44 | } else { 45 | buffer = Math.max(buffer - 0.05, 0); 46 | } 47 | if (zSwitched) { 48 | if (Math.abs(absDeltaZ - absLastDeltaZ) > 0.05) { 49 | if (++buffer > 1.25) { 50 | fail(); 51 | } 52 | } 53 | } else { 54 | buffer = Math.max(buffer - 0.05, 0); 55 | } 56 | } 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/noslow/NoSlowA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.noslow; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.PacketEvents; 8 | import io.github.retrooper.packetevents.packetwrappers.play.out.helditemslot.WrappedPacketOutHeldItemSlot; 9 | 10 | @CheckInfo(name = "NoSlow (A)", description = "Checks for NoSlow modules.", experimental = true) 11 | public final class NoSlowA extends Check { 12 | 13 | public NoSlowA(final PlayerData data) { 14 | super(data); 15 | } 16 | 17 | @Override 18 | public void handle(final Packet packet) { 19 | if (packet.isPosition()) { 20 | if (data.getActionProcessor().isSprinting() && data.getPlayer().isBlocking()) { 21 | debug("buffer=" + buffer); 22 | if (++buffer > 10) { 23 | fail("buffer=" + buffer); 24 | final int slot = data.getActionProcessor().getHeldItemSlot() == 8 ? 1 : 8; 25 | final WrappedPacketOutHeldItemSlot wrapper = new WrappedPacketOutHeldItemSlot(slot); 26 | PacketEvents.get().getPlayerUtils().sendPacket(data.getPlayer(), wrapper); 27 | buffer /= 2; 28 | } 29 | } else { 30 | buffer -= buffer > 0 ? 0.25 : 0; 31 | } 32 | } 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/phase/PhaseA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.phase; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.data.processor.PositionProcessor; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.type.BoundingBox; 9 | import org.bukkit.block.Block; 10 | 11 | import java.util.List; 12 | 13 | @CheckInfo(name = "Phase (A)", description = "Checks if the player moves through unpassable blocks", experimental = true) 14 | public class PhaseA extends Check { 15 | 16 | public PhaseA(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isPosition()) { 23 | final PositionProcessor position = data.getPositionProcessor(); 24 | 25 | final BoundingBox toBB = new BoundingBox( 26 | position.getX() - 0.3, position.getX() + 0.3, 27 | position.getY(), position.getY() + 1.705, 28 | position.getZ() - 0.3, position.getZ() + 0.3 29 | ); 30 | 31 | final BoundingBox fromBB = new BoundingBox( 32 | position.getLastX() - 0.3, position.getLastX() + 0.3, 33 | position.getLastY(), position.getLastY() + 0.3, 34 | position.getLastZ() - 0.3, position.getLastZ() + 0.3 35 | ); 36 | 37 | final BoundingBox unionBox = toBB.union(fromBB); 38 | 39 | if (unionBox.getSize() > 10) return; 40 | 41 | final List collidedBlocks = unionBox.getBlocks(data.getPlayer().getWorld()); 42 | 43 | final int size = (int) collidedBlocks.stream().filter(block -> block.getType().isSolid()).count(); 44 | 45 | if (size >= 4) { 46 | fail("collided=" + size); 47 | } 48 | 49 | debug("collided=" + size); 50 | } 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/speed/SpeedA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.speed; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 11/17/2020 Package ai.medusa.anticheat.check.impl.movement.speed by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "Speed (A)", description = "Checks for horizontal friction.") 13 | public final class SpeedA extends Check { 14 | 15 | public SpeedA(final PlayerData data) { 16 | super(data); 17 | } 18 | 19 | @Override 20 | public void handle(final Packet packet) { 21 | if (packet.isPosition()) { 22 | final double deltaXZ = data.getPositionProcessor().getDeltaXZ(); 23 | final double lastDeltaXZ = data.getPositionProcessor().getLastDeltaXZ(); 24 | 25 | final double prediction = lastDeltaXZ * 0.91F + (data.getActionProcessor().isSprinting() ? 0.026 : 0.02); 26 | final double difference = deltaXZ - prediction; 27 | 28 | final boolean invalid = difference > 1e-12 && 29 | data.getPositionProcessor().getAirTicks() > 2 && 30 | !data.getPositionProcessor().isFlying() && 31 | !data.getPositionProcessor().isNearVehicle(); 32 | 33 | debug("diff=" + difference); 34 | if (invalid) { 35 | if ((buffer += buffer < 100 ? 5 : 0) > 40) { 36 | fail(String.format("diff=%.4f", difference)); 37 | } 38 | } else { 39 | buffer = Math.max(buffer - 1, 0); 40 | } 41 | } 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/movement/speed/SpeedC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.movement.speed; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.exempt.type.ExemptType; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import ai.medusa.anticheat.util.PlayerUtil; 9 | import org.bukkit.potion.PotionEffectType; 10 | 11 | @CheckInfo(name = "Speed (C)", description = "Basic verbose speed check.", experimental = true) 12 | public final class SpeedC extends Check { 13 | 14 | public SpeedC(final PlayerData data) { 15 | super(data); 16 | } 17 | 18 | @Override 19 | public void handle(final Packet packet) { 20 | if (packet.isPosition()) { 21 | final double deltaXZ = data.getPositionProcessor().getDeltaXZ(); 22 | 23 | final double maxSpeed = getSpeed(0.4); 24 | 25 | final boolean exempt = isExempt( 26 | ExemptType.TELEPORT, ExemptType.JOINED, ExemptType.PISTON, ExemptType.VELOCITY, 27 | ExemptType.INSIDE_VEHICLE, ExemptType.FLYING, ExemptType.SLIME, ExemptType.UNDER_BLOCK, 28 | ExemptType.ICE 29 | ); 30 | 31 | debug("dxz-ms" + (deltaXZ-maxSpeed) + " buffer=" + buffer); 32 | if (deltaXZ > maxSpeed && !exempt) { 33 | buffer += buffer < 15 ? 1 : 0; 34 | if (buffer > 10) { 35 | fail("deltaXZ=" + deltaXZ + " max=" + maxSpeed); 36 | buffer /= 2; 37 | } 38 | } else { 39 | buffer -= buffer > 0 ? 0.25 : 0; 40 | } 41 | } 42 | } 43 | 44 | private double getSpeed(double movement) { 45 | if (PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.SPEED) > 0) { 46 | movement *= 1.0D + 0.2D * (double)(PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.SPEED)); 47 | } 48 | return movement; 49 | } 50 | } 51 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/hand/HandA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.hand; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.blockplace.WrappedPacketInBlockPlace; 8 | import io.github.retrooper.packetevents.utils.player.Direction; 9 | import org.bukkit.Location; 10 | 11 | /** 12 | * Created on 1/18/2021 Package ai.medusa.anticheat.check.impl.player.hand by infinitesm 13 | */ 14 | 15 | @CheckInfo(name = "Hand (A)", experimental = true, description = "Checks for face occlusion when placing blocks.") 16 | public final class HandA extends Check { 17 | 18 | public HandA(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isBlockPlace()) { 25 | final WrappedPacketInBlockPlace wrapper = new WrappedPacketInBlockPlace(packet.getRawPacket()); 26 | 27 | final Direction direction = wrapper.getDirection(); 28 | 29 | final Location blockLocation = new Location( 30 | data.getPlayer().getWorld(), 31 | wrapper.getBlockPosition().getX(), 32 | wrapper.getBlockPosition().getY(), 33 | wrapper.getBlockPosition().getZ() 34 | ); 35 | 36 | final Location eyeLocation = data.getPlayer().getEyeLocation(); 37 | final Location blockAgainstLocation = getBlockAgainst(direction, blockLocation); 38 | 39 | final boolean validInteraction = interactedCorrectly(blockAgainstLocation, eyeLocation, direction); 40 | 41 | if (!validInteraction) { 42 | assert direction != null; 43 | fail("face=" + direction.getFaceValue()); 44 | } 45 | } 46 | } 47 | 48 | private Location getBlockAgainst(final Direction direction, final Location blockLocation) { 49 | if (Direction.UP.equals(direction)) { 50 | return blockLocation.clone().add(0, -1, 0); 51 | } else if (Direction.DOWN.equals(direction)) { 52 | return blockLocation.clone().add(0, 1, 0); 53 | } else if (Direction.EAST.equals(direction) || Direction.SOUTH.equals(direction)) { 54 | return blockLocation; 55 | } else if (Direction.WEST.equals(direction)) { 56 | return blockLocation.clone().add(1, 0, 0); 57 | } else if (Direction.NORTH.equals(direction)) { 58 | return blockLocation.clone().add(0, 0, 1); 59 | } 60 | return null; 61 | } 62 | private boolean interactedCorrectly(Location block, Location player, Direction face) { 63 | if (Direction.UP.equals(face)) { 64 | return player.getY() > block.getY(); 65 | } else if (Direction.DOWN.equals(face)) { 66 | return player.getY() < block.getY(); 67 | } else if (Direction.WEST.equals(face)) { 68 | return player.getX() < block.getX(); 69 | } else if (Direction.EAST.equals(face)) { 70 | return player.getX() > block.getX(); 71 | } else if (Direction.NORTH.equals(face)) { 72 | return player.getZ() < block.getZ(); 73 | } else if (Direction.SOUTH.equals(face)) { 74 | return player.getZ() > block.getZ(); 75 | } 76 | return true; 77 | } 78 | } 79 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/inventory/InventoryA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.inventory; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | @CheckInfo(name = "Inventory (A)", description = "Checks for sprinting in inventory.", experimental = true) 9 | public final class InventoryA extends Check { 10 | 11 | public InventoryA(final PlayerData data) { 12 | super(data); 13 | } 14 | 15 | @Override 16 | public void handle(final Packet packet) { 17 | if (packet.isPosition()) { 18 | if (data.getActionProcessor().isInventory()) { 19 | if (data.getActionProcessor().isSprinting()) { 20 | if (++buffer > 5) { 21 | fail(); 22 | if (buffer >= 20) { 23 | data.getPlayer().closeInventory(); 24 | buffer = 0; 25 | data.getActionProcessor().setInventory(false); 26 | } 27 | } 28 | } else { 29 | buffer -= buffer > 0 ? 1 : 0; 30 | } 31 | } 32 | } 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/inventory/InventoryB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.inventory; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.windowclick.WrappedPacketInWindowClick; 8 | 9 | @CheckInfo(name = "Inventory (B)", description = "Checks for moving inventory items too quickly.", experimental = true) 10 | public final class InventoryB extends Check { 11 | 12 | private int movements; 13 | 14 | public InventoryB(final PlayerData data) { 15 | super(data); 16 | } 17 | 18 | @Override 19 | public void handle(final Packet packet) { 20 | if (packet.isWindowClick()) { 21 | final WrappedPacketInWindowClick wrapper = new WrappedPacketInWindowClick(packet.getRawPacket()); 22 | 23 | if (wrapper.getMode() == 1) { 24 | if (movements <= 1) { 25 | if (++buffer > 5) { 26 | fail("ticks=" + movements + " mode=1"); 27 | } 28 | } else { 29 | buffer -= buffer > 0 ? 0.5 : 0; 30 | } 31 | } else if (wrapper.getMode() == 4) { 32 | if (movements == 0) { 33 | if (++buffer > 5) { 34 | fail("ticks=" + movements + " mode=4"); 35 | } 36 | } else { 37 | buffer -= buffer > 0 ? 0.5 : 0; 38 | } 39 | } 40 | 41 | movements = 0; 42 | } else if (packet.isFlying()) { 43 | ++movements; 44 | } 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "Protocol (A)", description = "Checks for invalid pitch rotation.") 13 | public final class ProtocolA extends Check { 14 | 15 | public ProtocolA(final PlayerData data) { 16 | super(data); 17 | } 18 | 19 | @Override 20 | public void handle(final Packet packet) { 21 | if (packet.isRotation()) { 22 | final float pitch = data.getRotationProcessor().getPitch(); 23 | 24 | if (Math.abs(pitch) > 90) fail(String.format("pitch=%.2f", pitch)); 25 | } 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.abilities.WrappedPacketInAbilities; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 11 | */ 12 | 13 | 14 | @CheckInfo(name = "Protocol (B)", description = "Checks for spoofed abilities packets.") 15 | public final class ProtocolB extends Check { 16 | 17 | public ProtocolB(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isAbilities()) { 24 | final WrappedPacketInAbilities wrapper = new WrappedPacketInAbilities(packet.getRawPacket()); 25 | 26 | final boolean invalid = wrapper.isFlightAllowed() && !data.getPlayer().getAllowFlight(); 27 | 28 | if (invalid) { 29 | fail(); 30 | } 31 | } 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.flying.WrappedPacketInFlying; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 11 | */ 12 | 13 | 14 | @CheckInfo(name = "Protocol (C)", description = "Checks for flying packet sequence.") 15 | public final class ProtocolC extends Check { 16 | 17 | private int streak; 18 | 19 | public ProtocolC(final PlayerData data) { 20 | super(data); 21 | } 22 | 23 | @Override 24 | public void handle(final Packet packet) { 25 | if (packet.isFlying()) { 26 | final WrappedPacketInFlying wrapper = new WrappedPacketInFlying(packet.getRawPacket()); 27 | 28 | if (wrapper.isPosition() || data.getPlayer().isInsideVehicle()) { 29 | streak = 0; 30 | return; 31 | } 32 | 33 | if (++streak > 20) { 34 | fail("streak=" + streak); 35 | } 36 | } else if (packet.isSteerVehicle()) { 37 | streak = 0; 38 | } 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.steervehicle.WrappedPacketInSteerVehicle; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 11 | */ 12 | 13 | 14 | @CheckInfo(name = "Protocol (D)", description = "Checks for a common exploit in disabler modules.") 15 | public final class ProtocolD extends Check { 16 | 17 | public ProtocolD(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isSteerVehicle()) { 25 | final WrappedPacketInSteerVehicle wrapper = new WrappedPacketInSteerVehicle(packet.getRawPacket()); 26 | 27 | final float forwardValue = Math.abs(wrapper.getForwardValue()); 28 | final float sideValue = Math.abs(wrapper.getSideValue()); 29 | 30 | final boolean invalid = forwardValue > .98F || sideValue > .98F; 31 | 32 | if (invalid) { 33 | fail(); 34 | } 35 | } 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolE.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.helditemslot.WrappedPacketInHeldItemSlot; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 11 | */ 12 | 13 | 14 | @CheckInfo(name = "Protocol (E)", description = "Checks for flaws in scaffold/auto-tool hacks.") 15 | public final class ProtocolE extends Check { 16 | 17 | private int lastSlot = -1; 18 | 19 | public ProtocolE(final PlayerData data) { 20 | super(data); 21 | } 22 | 23 | @Override 24 | public void handle(final Packet packet) { 25 | if (packet.isHeldItemSlot()) { 26 | final WrappedPacketInHeldItemSlot wrapper = new WrappedPacketInHeldItemSlot(packet.getRawPacket()); 27 | 28 | final int slot = wrapper.getCurrentSelectedSlot(); 29 | 30 | if (slot == lastSlot) { 31 | fail(); 32 | } 33 | 34 | lastSlot = slot; 35 | } 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolF.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.steervehicle.WrappedPacketInSteerVehicle; 8 | 9 | /** 10 | * Created on 11/14/2020 Package ai.medusa.anticheat.check.impl.player.Protocol by infinitesm 11 | */ 12 | 13 | 14 | @CheckInfo(name = "Protocol (F)", description = "Checks for a common exploit in disabler modules.") 15 | public final class ProtocolF extends Check { 16 | 17 | public ProtocolF(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isSteerVehicle()) { 24 | final WrappedPacketInSteerVehicle wrapper = new WrappedPacketInSteerVehicle(packet.getRawPacket()); 25 | 26 | final boolean unmount = wrapper.isDismount(); 27 | 28 | final boolean invalid = data.getPlayer().getVehicle() == null && !unmount; 29 | 30 | if (invalid) { 31 | if (++buffer > 8) { 32 | fail("buffer=" + buffer); 33 | buffer /= 2; 34 | } 35 | } else { 36 | buffer = 0; 37 | } 38 | } 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolG.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 11/10/2020 Package ai.medusa.anticheat.check.impl.player.scaffold by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "Protocol (G)", description = "Checks for packet order.") 13 | public final class ProtocolG extends Check { 14 | 15 | private long lastBlockPlace; 16 | private boolean placedBlock; 17 | 18 | public ProtocolG(final PlayerData data) { 19 | super(data); 20 | } 21 | 22 | @Override 23 | public void handle(final Packet packet) { 24 | if (packet.isBlockPlace()) { 25 | lastBlockPlace = now(); 26 | placedBlock = true; 27 | } else if (packet.isFlying()) { 28 | if (placedBlock) { 29 | final long delay = now() - lastBlockPlace; 30 | final boolean invalid = !data.getActionProcessor().isLagging() && delay > 25; 31 | 32 | if (invalid) { 33 | if (++buffer > 5) { 34 | fail("delay=" + delay + " buffer=" + buffer); 35 | } 36 | } else { 37 | buffer = Math.max(buffer - 2, 0); 38 | } 39 | } 40 | placedBlock = false; 41 | } 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolH.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 8 | 9 | @CheckInfo(name = "Protocol (H)", description = "Checks for tick stack order in block hitting.") 10 | public final class ProtocolH extends Check { 11 | 12 | public ProtocolH(final PlayerData data) { 13 | super(data); 14 | } 15 | 16 | @Override 17 | public void handle(final Packet packet) { 18 | if (packet.isUseEntity()) { 19 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 20 | 21 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 22 | final boolean invalid = data.getActionProcessor().isPlacing(); 23 | 24 | if (invalid) { 25 | fail(); 26 | } 27 | } 28 | } 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolI.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 8 | 9 | @CheckInfo(name = "Protocol (I)", description = "Validates block dig packets.") 10 | public final class ProtocolI extends Check { 11 | 12 | public ProtocolI(final PlayerData data) { 13 | super(data); 14 | } 15 | 16 | @Override 17 | public void handle(final Packet packet) { 18 | if (packet.isUseEntity()) { 19 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 20 | 21 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 22 | final boolean invalid = data.getActionProcessor().isBlocking(); 23 | 24 | if (invalid) { 25 | fail(); 26 | } 27 | } 28 | } 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/protocol/ProtocolJ.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.protocol; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 8 | 9 | @CheckInfo(name = "Protocol (J)", description = "Checks for attacking and digging.") 10 | public final class ProtocolJ extends Check { 11 | 12 | public ProtocolJ(final PlayerData data) { 13 | super(data); 14 | } 15 | 16 | @Override 17 | public void handle(final Packet packet) { 18 | if (packet.isUseEntity()) { 19 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 20 | 21 | if (wrapper.getAction() == WrappedPacketInUseEntity.EntityUseAction.ATTACK) { 22 | final boolean sword = data.getPlayer().getItemInHand().getType().toString().contains("SWORD"); 23 | final boolean invalid = data.getActionProcessor().isSendingDig(); 24 | 25 | if (invalid && sword) { 26 | if (++buffer > 5) { 27 | fail(); 28 | } 29 | } else { 30 | buffer = Math.max(buffer - 1, 0); 31 | } 32 | } 33 | } 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/scaffold/ScaffoldA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.scaffold; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | /** 9 | * Created on 11/10/2020 Package ai.medusa.anticheat.check.impl.player.scaffold by infinitesm 10 | */ 11 | 12 | @CheckInfo(name = "Scaffold (A)", description = "Checks for movement/rotations that are related to scaffold modules.") 13 | public final class ScaffoldA extends Check { 14 | 15 | private boolean placedBlock; 16 | 17 | public ScaffoldA(final PlayerData data) { 18 | super(data); 19 | } 20 | 21 | @Override 22 | public void handle(final Packet packet) { 23 | if (packet.isFlying()) { 24 | if (placedBlock && isBridging()) { 25 | final double deltaXZ = data.getPositionProcessor().getDeltaXZ(); 26 | final double lastDeltaXZ = data.getPositionProcessor().getLastDeltaXZ(); 27 | 28 | final double accel = Math.abs(deltaXZ - lastDeltaXZ); 29 | 30 | final float deltaYaw = data.getRotationProcessor().getDeltaYaw() % 360F; 31 | final float deltaPitch = data.getRotationProcessor().getDeltaPitch(); 32 | 33 | final boolean invalid = deltaYaw > 75F && deltaPitch > 15F && accel < 0.15; 34 | 35 | if (invalid) { 36 | if (++buffer > 3) { 37 | fail(String.format("accel=%.2f, deltaYaw=%.2f, deltaPitch=%.2f", accel, deltaYaw, deltaPitch)); 38 | } 39 | } else { 40 | buffer = Math.max(buffer - 0.5, 0); 41 | } 42 | } 43 | placedBlock = false; 44 | } else if (packet.isBlockPlace()) { 45 | if (data.getPlayer().getItemInHand().getType().isBlock()) { 46 | placedBlock = true; 47 | } 48 | } 49 | } 50 | } 51 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/scaffold/ScaffoldB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.scaffold; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import ai.medusa.anticheat.util.PlayerUtil; 8 | import io.github.retrooper.packetevents.packetwrappers.play.in.blockplace.WrappedPacketInBlockPlace; 9 | import org.bukkit.potion.PotionEffectType; 10 | 11 | @CheckInfo(name = "Scaffold (B)", description = "Checks for tower hacks.", experimental = true) 12 | public final class ScaffoldB extends Check { 13 | 14 | private int movements; 15 | private int lastX, lastY, lastZ; 16 | public ScaffoldB(final PlayerData data) { 17 | super(data); 18 | } 19 | 20 | @Override 21 | public void handle(final Packet packet) { 22 | if (packet.isBlockPlace()) { 23 | final WrappedPacketInBlockPlace wrapper = new WrappedPacketInBlockPlace(packet.getRawPacket()); 24 | 25 | if (PlayerUtil.getPotionLevel(data.getPlayer(), PotionEffectType.JUMP) > 0) return; 26 | if (data.getPositionProcessor().getDeltaY() <= 0) return; 27 | 28 | if (!(wrapper.getBlockPosition().getX() == 1 && wrapper.getBlockPosition().getY() == 1 && wrapper.getBlockPosition().getZ() != 1)) { 29 | if (data.getPlayer().getItemInHand().getType().isBlock()) { 30 | if (lastX == wrapper.getBlockPosition().getX() && wrapper.getBlockPosition().getY() > lastY && lastZ == wrapper.getBlockPosition().getZ()) { 31 | if (movements < 7) { 32 | if (++buffer > 2) { 33 | fail("ticks=" + movements); 34 | } 35 | } else { 36 | buffer = 0; 37 | } 38 | movements = 0; 39 | } 40 | lastX = wrapper.getBlockPosition().getX(); 41 | lastY = wrapper.getBlockPosition().getY(); 42 | lastZ = wrapper.getBlockPosition().getZ(); 43 | } 44 | } 45 | } else if (packet.isFlying()) { 46 | ++movements; 47 | } 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/scaffold/ScaffoldC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.scaffold; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.blockplace.WrappedPacketInBlockPlace; 8 | import io.github.retrooper.packetevents.utils.player.Direction; 9 | 10 | @CheckInfo(name = "Scaffold (C)", description = "Checks for downwards scaffold.", experimental = true) 11 | public final class ScaffoldC extends Check { 12 | 13 | public ScaffoldC(final PlayerData data) { 14 | super(data); 15 | } 16 | 17 | @Override 18 | public void handle(final Packet packet) { 19 | if (packet.isBlockPlace()) { 20 | final WrappedPacketInBlockPlace wrapper = new WrappedPacketInBlockPlace(packet.getRawPacket()); 21 | 22 | if (!(wrapper.getBlockPosition().getX() == 1 && wrapper.getBlockPosition().getY() == 1 && wrapper.getBlockPosition().getZ() == 1)) { 23 | if (data.getPlayer().getItemInHand().getType().isBlock()) { 24 | if (wrapper.getDirection() == Direction.DOWN) { 25 | if (wrapper.getBlockPosition().getY() < data.getPositionProcessor().getY()) fail(); 26 | } 27 | } 28 | } 29 | } 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/scaffold/ScaffoldD.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.scaffold; 2 | 3 | import ai.medusa.api.check.CheckInfo; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.packet.Packet; 7 | 8 | @CheckInfo(name = "Scaffold (D)", description = "Checks for SafeWalk scaffold.", experimental = true) 9 | public final class ScaffoldD extends Check { 10 | 11 | private int placedTicks; 12 | 13 | private double lastLastAccel, lastAccel; 14 | 15 | public ScaffoldD(final PlayerData data) { 16 | super(data); 17 | } 18 | 19 | @Override 20 | public void handle(final Packet packet) { 21 | if (packet.isPosition()) { 22 | if (++placedTicks < 5 && isBridging() && !data.getActionProcessor().isSneaking()) { 23 | final double accel = data.getPositionProcessor().getDeltaXZ() - data.getPositionProcessor().getLastDeltaXZ(); 24 | 25 | debug("accel=" + accel); 26 | if (accel < 0.0001 && lastAccel > 0.05 && lastLastAccel < 0.0001) { 27 | if (++buffer > 3) { 28 | fail(); 29 | buffer = 0; 30 | } 31 | } 32 | 33 | lastLastAccel = lastAccel; 34 | lastAccel = accel; 35 | } 36 | } else if (packet.isBlockPlace()) { 37 | if (data.getPlayer().getItemInHand().getType().isBlock()) placedTicks = 0; 38 | } 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/timer/TimerA.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.timer; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.exempt.type.ExemptType; 8 | import ai.medusa.anticheat.packet.Packet; 9 | import ai.medusa.anticheat.util.MathUtil; 10 | import ai.medusa.anticheat.util.type.EvictingList; 11 | 12 | /** 13 | * Created on 11/13/2020 Package ai.medusa.anticheat.check.impl.player.timer by infinitesm 14 | */ 15 | 16 | @CheckInfo(name = "Timer (A)", description = "Checks for game speed which is too fast.") 17 | public final class TimerA extends Check { 18 | 19 | private static final ConfigValue maxTimerSpeed = new ConfigValue(ConfigValue.ValueType.DOUBLE, "max-timer-speed"); 20 | private final EvictingList samples = new EvictingList<>(50); 21 | private long lastFlyingTime; 22 | 23 | public TimerA(final PlayerData data) { 24 | super(data); 25 | } 26 | 27 | @Override 28 | public void handle(final Packet packet) { 29 | if (packet.isFlying() && !isExempt(ExemptType.TPS)) { 30 | final long now = now(); 31 | final long delta = now - lastFlyingTime; 32 | 33 | if (delta > 1) { 34 | samples.add(delta); 35 | } 36 | 37 | if (samples.isFull()) { 38 | final double average = MathUtil.getAverage(samples); 39 | final double speed = 50 / average; 40 | 41 | debug(String.format("speed=%.4f, delta=%o, buffer=%.2f", speed, delta, buffer)); 42 | 43 | if (speed >= maxTimerSpeed.getDouble()) { 44 | if (++buffer > 30) { 45 | buffer = Math.min(buffer, 50); 46 | fail(String.format("speed=%.4f, delta=%o, buffer=%.2f", speed, delta, buffer)); 47 | } 48 | } else { 49 | buffer = Math.max(0, buffer - 1); 50 | } 51 | } 52 | 53 | lastFlyingTime = now; 54 | } else if (packet.isOutPosition()) { 55 | samples.add(135L); //Magic value. 100L doesn't completely fix it for some reason. 56 | } 57 | } 58 | } 59 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/timer/TimerB.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.timer; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.exempt.type.ExemptType; 8 | import ai.medusa.anticheat.packet.Packet; 9 | import ai.medusa.anticheat.util.MathUtil; 10 | import ai.medusa.anticheat.util.type.EvictingList; 11 | 12 | /** 13 | * Created on 11/13/2020 Package ai.medusa.anticheat.check.impl.player.timer by infinitesm 14 | */ 15 | 16 | @CheckInfo(name = "Timer (B)", description = "Checks for game speed which is too slow.", experimental = true) 17 | public final class TimerB extends Check { 18 | 19 | private static final ConfigValue minSpeed = new ConfigValue(ConfigValue.ValueType.DOUBLE, "minimum-timer-speed"); 20 | private final EvictingList samples = new EvictingList<>(50); 21 | private long lastFlyingTime; 22 | 23 | 24 | public TimerB(final PlayerData data) { 25 | super(data); 26 | } 27 | 28 | @Override 29 | public void handle(final Packet packet) { 30 | if (packet.isFlying() && !isExempt(ExemptType.TPS)) { 31 | final long now = now(); 32 | final long delta = now - lastFlyingTime; 33 | 34 | samples.add(delta); 35 | if (samples.isFull()) { 36 | final double average = samples.stream().mapToDouble(value -> value).average().orElse(1); 37 | final double speed = 50 / average; 38 | 39 | final double deviation = MathUtil.getStandardDeviation(samples); 40 | 41 | if (speed <= minSpeed.getDouble() && deviation < 50.0) { 42 | if (++buffer > 35) { 43 | fail(String.format("speed=%.2f deviation=%.2f", speed, deviation)); 44 | } 45 | } else { 46 | buffer /= 2; 47 | } 48 | } 49 | lastFlyingTime = now; 50 | } 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/check/impl/player/timer/TimerC.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.check.impl.player.timer; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.api.check.CheckInfo; 5 | import ai.medusa.anticheat.config.ConfigValue; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.exempt.type.ExemptType; 8 | import ai.medusa.anticheat.packet.Packet; 9 | 10 | @CheckInfo(name = "Timer (C)", description = "Balance based timer check.", experimental = true) 11 | public final class TimerC extends Check { 12 | 13 | private static final ConfigValue maxBal = new ConfigValue(ConfigValue.ValueType.LONG, "maximum-balance"); 14 | private static final ConfigValue balReset = new ConfigValue(ConfigValue.ValueType.LONG, "balance-reset"); 15 | private static final ConfigValue balSubOnTp = new ConfigValue( 16 | ConfigValue.ValueType.LONG, "balance-subtraction-on-teleport" 17 | ); 18 | private long lastFlyingTime = 0L; 19 | private long balance = 0L; 20 | 21 | public TimerC(final PlayerData data) { 22 | super(data); 23 | } 24 | 25 | @Override 26 | public void handle(final Packet packet) { 27 | if (packet.isFlying() && !isExempt(ExemptType.JOINED, ExemptType.TPS)) { 28 | if (lastFlyingTime != 0L) { 29 | final long now = now(); 30 | balance += 50L; 31 | balance -= now - lastFlyingTime; 32 | if (balance > maxBal.getLong()) { 33 | fail("balance=" + balance); 34 | balance = balReset.getLong(); 35 | } 36 | } 37 | lastFlyingTime = now(); 38 | } else if (packet.isOutPosition()) { 39 | balance -= balSubOnTp.getLong(); 40 | } 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/CommandInfo.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command; 2 | 3 | import java.lang.annotation.ElementType; 4 | import java.lang.annotation.Retention; 5 | import java.lang.annotation.RetentionPolicy; 6 | import java.lang.annotation.Target; 7 | 8 | @Retention(RetentionPolicy.RUNTIME) 9 | @Target(ElementType.TYPE) 10 | public @interface CommandInfo { 11 | String name(); 12 | String purpose(); 13 | String syntax() default ""; 14 | } 15 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/CommandManager.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command; 2 | 3 | import ai.medusa.anticheat.MedusaPlugin; 4 | import ai.medusa.anticheat.command.impl.*; 5 | import ai.medusa.anticheat.command.impl.*; 6 | import ai.medusa.anticheat.command.impl.*; 7 | import ai.medusa.anticheat.command.impl.*; 8 | import ai.medusa.anticheat.util.ColorUtil; 9 | import ai.medusa.anticheat.config.Config; 10 | import org.bukkit.command.Command; 11 | import org.bukkit.command.CommandExecutor; 12 | import org.bukkit.command.CommandSender; 13 | 14 | import java.util.ArrayList; 15 | import java.util.List; 16 | 17 | public final class CommandManager implements CommandExecutor { 18 | 19 | private final List commands = new ArrayList<>(); 20 | 21 | public CommandManager(final MedusaPlugin plugin) { 22 | commands.add(new Alerts()); 23 | commands.add(new Info()); 24 | commands.add(new Debug()); 25 | commands.add(new Violations()); 26 | commands.add(new Theme()); 27 | } 28 | 29 | @Override 30 | public boolean onCommand(CommandSender commandSender, Command command, String string, String[] args) { 31 | if (commandSender.hasPermission("medusa.commands")) { 32 | if (args.length > 0) { 33 | for (final MedusaCommand medusaCommand : commands) { 34 | final String commandName = medusaCommand.getCommandInfo().name(); 35 | if (commandName.equals(args[0])) { 36 | if (commandSender.hasPermission("medusa." + commandName)) { 37 | if (!medusaCommand.handle(commandSender, command, string, args)) { 38 | commandSender.sendMessage(ColorUtil.translate(Config.ACCENT_ONE + "Usage: /medusa " + 39 | medusaCommand.getCommandInfo().name() + " " + 40 | medusaCommand.getCommandInfo().syntax())); 41 | } 42 | } else { 43 | return false; 44 | } 45 | return true; 46 | } 47 | } 48 | } else { 49 | commandSender.sendMessage(""); 50 | commandSender.sendMessage(ColorUtil.translate(Config.ACCENT_ONE + "Medusa AntiCheat Commands:\n" + " \n")); 51 | for (final MedusaCommand medusaCommand : commands) { 52 | commandSender.sendMessage(ColorUtil.translate( Config.ACCENT_ONE + "/medusa " + 53 | medusaCommand.getCommandInfo().name() + " " + 54 | medusaCommand.getCommandInfo().syntax())); 55 | } 56 | commandSender.sendMessage(""); 57 | return true; 58 | } 59 | } 60 | return false; 61 | } 62 | } 63 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/MedusaCommand.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command; 2 | 3 | import ai.medusa.anticheat.util.ColorUtil; 4 | import ai.medusa.anticheat.config.Config; 5 | import org.bukkit.command.Command; 6 | import org.bukkit.command.CommandSender; 7 | 8 | public abstract class MedusaCommand implements Comparable { 9 | 10 | protected abstract boolean handle(final CommandSender sender, final Command command, final String label, final String[] args); 11 | 12 | public void sendLineBreak(final CommandSender sender) { 13 | sender.sendMessage(ColorUtil.translate(Config.ACCENT_TWO + "&m----------------------------------------------")); 14 | } 15 | 16 | public void sendRetardedNewLine(final CommandSender sender) { 17 | sender.sendMessage(""); 18 | } 19 | 20 | public void sendMessage(final CommandSender sender, final String message) { 21 | sender.sendMessage(ColorUtil.translate(message)); 22 | } 23 | 24 | public CommandInfo getCommandInfo() { 25 | if (this.getClass().isAnnotationPresent(CommandInfo.class)) { 26 | return this.getClass().getAnnotation(CommandInfo.class); 27 | } else { 28 | System.err.println("CommandInfo annotation hasn't been added to the class " + this.getClass().getSimpleName() + "."); 29 | } 30 | return null; 31 | } 32 | 33 | @Override 34 | public int compareTo(MedusaCommand o) { 35 | return 0; 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/impl/Alerts.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command.impl; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.command.MedusaCommand; 5 | import ai.medusa.anticheat.config.Config; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | import ai.medusa.anticheat.util.anticheat.AlertUtil; 8 | import ai.medusa.anticheat.command.CommandInfo; 9 | import org.bukkit.command.Command; 10 | import org.bukkit.command.CommandSender; 11 | import org.bukkit.entity.Player; 12 | 13 | @CommandInfo(name = "alerts", purpose = "Toggles cheat alerts.") 14 | public final class Alerts extends MedusaCommand { 15 | 16 | @Override 17 | protected boolean handle(CommandSender sender, Command command, String label, String[] args) { 18 | if (sender instanceof Player) { 19 | final Player player = (Player) sender; 20 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(player); 21 | 22 | if (data != null) { 23 | if (AlertUtil.toggleAlerts(data) == AlertUtil.ToggleAlertType.ADD) { 24 | sendMessage(sender, Config.ACCENT_ONE + "Toggled your cheat alerts &2on" + Config.ACCENT_ONE + "."); 25 | } else { 26 | sendMessage(sender, Config.ACCENT_ONE + "Toggled your cheat alerts &coff" + Config.ACCENT_ONE + "."); 27 | } 28 | return true; 29 | } 30 | } else { 31 | sendMessage(sender, "Only players can execute this command."); 32 | } 33 | return false; 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/impl/Debug.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command.impl; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.command.CommandInfo; 6 | import ai.medusa.anticheat.command.MedusaCommand; 7 | import ai.medusa.anticheat.data.PlayerData; 8 | import org.bukkit.ChatColor; 9 | import org.bukkit.command.Command; 10 | import org.bukkit.command.CommandSender; 11 | import org.bukkit.entity.Player; 12 | 13 | @CommandInfo(name = "debug", syntax = "", purpose = "Debug information from a specified check.") 14 | public class Debug extends MedusaCommand { 15 | @Override 16 | protected boolean handle(final CommandSender sender, final Command command, final String label, final String[] args) { 17 | if (sender instanceof Player) { 18 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(((Player) sender).getPlayer()); 19 | 20 | if (data != null) { 21 | if (args.length == 3) { 22 | final String checkName = args[1] + " " + args[2]; 23 | 24 | for (Check check : data.getChecks()) { 25 | if (check.getCheckInfo().name().equals(checkName)) { 26 | check.setDebugging(true); 27 | sender.sendMessage(ChatColor.GREEN + "Debugging " + checkName + "!"); 28 | } else { 29 | check.setDebugging(false); 30 | } 31 | } 32 | return true; 33 | } else if (args.length == 2) { 34 | if (args[1].equalsIgnoreCase("none")) { 35 | for (Check check : data.getChecks()) { 36 | check.setDebugging(false); 37 | } 38 | sender.sendMessage(ChatColor.RED + "Turned off debugging!"); 39 | return true; 40 | } 41 | } 42 | } 43 | } 44 | sender.sendMessage(ChatColor.RED + "Invalid check!"); 45 | return false; 46 | } 47 | } 48 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/impl/Info.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command.impl; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.command.CommandInfo; 5 | import ai.medusa.anticheat.command.MedusaCommand; 6 | import ai.medusa.anticheat.config.Config; 7 | import ai.medusa.anticheat.data.PlayerData; 8 | import ai.medusa.anticheat.util.ColorUtil; 9 | import io.github.retrooper.packetevents.PacketEvents; 10 | import org.bukkit.Bukkit; 11 | import org.bukkit.command.Command; 12 | import org.bukkit.command.CommandSender; 13 | import org.bukkit.entity.Player; 14 | 15 | @CommandInfo(name = "info", syntax = "", purpose = "Returns information about the players client.") 16 | public final class Info extends MedusaCommand { 17 | @Override 18 | protected boolean handle(final CommandSender sender, final Command command, final String label, final String[] args) { 19 | if (args.length == 2) { 20 | final Player player = Bukkit.getPlayer(args[1]); 21 | 22 | if (player != null) { 23 | final PlayerData playerData = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(player); 24 | 25 | if (playerData != null) { 26 | sendRetardedNewLine(sender); 27 | sendMessage(sender, Config.ACCENT_ONE + "Information for &c" + playerData.getPlayer().getName() + Config.ACCENT_ONE + "."); 28 | sendRetardedNewLine(sender); 29 | sendMessage(sender, Config.ACCENT_TWO + "&oGeneral information:"); 30 | sendMessage(sender, Config.ACCENT_ONE + "Latency → " + Config.ACCENT_TWO + PacketEvents.get().getPlayerUtils().getPing(playerData.getPlayer()) + "ms"); 31 | sendMessage(sender, Config.ACCENT_ONE + "Checks amount → " + Config.ACCENT_TWO + playerData.getChecks().size()); 32 | sendMessage(sender, Config.ACCENT_ONE + "Sensitivity → " + Config.ACCENT_TWO + playerData.getRotationProcessor().getSensitivity() + "%"); 33 | final String clientBrand = playerData.getClientBrand() == null ? "&cCould not resolve client brand for this player." : playerData.getClientBrand(); 34 | sendMessage(sender, ColorUtil.translate(Config.ACCENT_ONE + "Client brand: → " + Config.ACCENT_TWO + clientBrand)); 35 | sendRetardedNewLine(sender); 36 | return true; 37 | } 38 | } 39 | } 40 | return false; 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/impl/Theme.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command.impl; 2 | 3 | import ai.medusa.anticheat.command.CommandInfo; 4 | import ai.medusa.anticheat.command.MedusaCommand; 5 | import ai.medusa.anticheat.config.Config; 6 | import ai.medusa.anticheat.manager.ThemeManager; 7 | import org.bukkit.command.Command; 8 | import org.bukkit.command.CommandSender; 9 | 10 | 11 | @CommandInfo(name = "theme", syntax = "", purpose = "Changes the theme.") 12 | public final class Theme extends MedusaCommand { 13 | @Override 14 | protected boolean handle(final CommandSender sender, final Command command, final String label, final String[] args) { 15 | if (args.length == 2) { 16 | for (ThemeManager.Theme theme : ThemeManager.themes) { 17 | if (args[1].equalsIgnoreCase(theme.getName())) { 18 | Config.ALERT_FORMAT = theme.getAlertFormat(); 19 | Config.ACCENT_ONE = "&" + theme.getAccentColours().get(0).getChar(); 20 | Config.ACCENT_TWO = "&" + theme.getAccentColours().get(1).getChar(); 21 | 22 | sendMessage(sender, Config.ACCENT_ONE + "Updated theme to &c" + theme.getName() + " theme."); 23 | return true; 24 | } 25 | } 26 | } else if (args.length == 1) { 27 | sendRetardedNewLine(sender); 28 | sendMessage(sender, Config.ACCENT_ONE + "Themes for the anti-cheat:"); 29 | sendRetardedNewLine(sender); 30 | for (ThemeManager.Theme theme : ThemeManager.themes) { 31 | sendMessage(sender, Config.ACCENT_ONE + theme.getName()); 32 | } 33 | sendRetardedNewLine(sender); 34 | return true; 35 | } 36 | return false; 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/command/impl/Violations.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.command.impl; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.command.CommandInfo; 5 | import ai.medusa.anticheat.command.MedusaCommand; 6 | import ai.medusa.anticheat.config.Config; 7 | import ai.medusa.anticheat.data.PlayerData; 8 | import org.bukkit.Bukkit; 9 | import org.bukkit.command.Command; 10 | import org.bukkit.command.CommandSender; 11 | import org.bukkit.entity.Player; 12 | 13 | @CommandInfo(name = "violations", syntax = "", purpose = "Describes violations for the player.") 14 | public final class Violations extends MedusaCommand { 15 | @Override 16 | protected boolean handle(final CommandSender sender, final Command command, final String label, final String[] args) { 17 | if (args.length == 2) { 18 | final Player player = Bukkit.getPlayer(args[1]); 19 | 20 | if (player != null) { 21 | final PlayerData playerData = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(player); 22 | 23 | if (playerData != null) { 24 | sendRetardedNewLine(sender); 25 | sendMessage(sender, Config.ACCENT_ONE + "Violations for &c" + playerData.getPlayer().getName() + Config.ACCENT_ONE + "."); 26 | sendRetardedNewLine(sender); 27 | sendMessage(sender, Config.ACCENT_ONE + "Total check violations → " + Config.ACCENT_TWO + playerData.getTotalViolations()); 28 | sendMessage(sender, Config.ACCENT_ONE + "Combat check violations → " + Config.ACCENT_TWO + playerData.getCombatViolations()); 29 | sendMessage(sender, Config.ACCENT_ONE + "Movement check violations → " + Config.ACCENT_TWO + playerData.getMovementViolations()); 30 | sendMessage(sender, Config.ACCENT_ONE + "Player check violations → " + Config.ACCENT_TWO + playerData.getPlayerViolations()); 31 | sendRetardedNewLine(sender); 32 | return true; 33 | } 34 | } 35 | } 36 | return false; 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/config/ConfigValue.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.config; 2 | 3 | import lombok.Getter; 4 | import lombok.Setter; 5 | 6 | public final class ConfigValue { 7 | @Setter 8 | private Object value; 9 | @Getter 10 | private final ValueType type; 11 | @Getter 12 | private final String name; 13 | 14 | public ConfigValue(ValueType type, String name) { 15 | this.type = type; 16 | this.name = name; 17 | } 18 | 19 | public boolean getBoolean() { 20 | return (boolean) value; 21 | } 22 | 23 | public double getDouble() { 24 | return (double) value; 25 | } 26 | 27 | public int getInt() { 28 | return (int) value; 29 | } 30 | 31 | public long getLong() { 32 | return (long) value; 33 | } 34 | 35 | public String getString() { 36 | return (String) value; 37 | } 38 | 39 | public enum ValueType { 40 | INTEGER, 41 | DOUBLE, 42 | BOOLEAN, 43 | STRING, 44 | LONG 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/PlayerData.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data; 2 | 3 | import ai.medusa.anticheat.check.Check; 4 | import ai.medusa.anticheat.data.processor.*; 5 | import ai.medusa.anticheat.data.processor.*; 6 | import ai.medusa.anticheat.data.processor.*; 7 | import ai.medusa.anticheat.data.processor.*; 8 | import ai.medusa.anticheat.util.type.EvictingList; 9 | import ai.medusa.anticheat.util.type.Pair; 10 | import lombok.Getter; 11 | import lombok.Setter; 12 | import ai.medusa.anticheat.exempt.ExemptProcessor; 13 | import ai.medusa.anticheat.manager.CheckManager; 14 | import org.bukkit.Location; 15 | import org.bukkit.entity.Player; 16 | import java.util.List; 17 | 18 | @Getter 19 | @Setter 20 | public final class PlayerData { 21 | 22 | private final Player player; 23 | private String clientBrand; 24 | private int totalViolations, combatViolations, movementViolations, playerViolations; 25 | private final long joinTime = System.currentTimeMillis(); 26 | private final List checks = CheckManager.loadChecks(this); 27 | private final EvictingList> targetLocations = new EvictingList<>(40); 28 | 29 | private final ExemptProcessor exemptProcessor = new ExemptProcessor(this); 30 | private final CombatProcessor combatProcessor = new CombatProcessor(this); 31 | private final ActionProcessor actionProcessor = new ActionProcessor(this); 32 | private final ClickProcessor clickProcessor = new ClickProcessor(this); 33 | private final PositionProcessor positionProcessor = new PositionProcessor(this); 34 | private final RotationProcessor rotationProcessor = new RotationProcessor(this); 35 | private final VelocityProcessor velocityProcessor = new VelocityProcessor(this); 36 | 37 | public PlayerData(final Player player) { 38 | this.player = player; 39 | } 40 | } 41 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/processor/ActionProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data.processor; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.util.MathUtil; 5 | import ai.medusa.anticheat.util.PlayerUtil; 6 | import ai.medusa.anticheat.util.type.EvictingList; 7 | import io.github.retrooper.packetevents.PacketEvents; 8 | import io.github.retrooper.packetevents.packetwrappers.play.in.blockdig.WrappedPacketInBlockDig; 9 | import io.github.retrooper.packetevents.packetwrappers.play.in.clientcommand.WrappedPacketInClientCommand; 10 | import io.github.retrooper.packetevents.packetwrappers.play.in.entityaction.WrappedPacketInEntityAction; 11 | import io.github.retrooper.packetevents.packetwrappers.play.in.helditemslot.WrappedPacketInHeldItemSlot; 12 | import lombok.Getter; 13 | import ai.medusa.anticheat.data.PlayerData; 14 | import lombok.Setter; 15 | import org.bukkit.event.block.Action; 16 | import org.bukkit.event.player.PlayerInteractEvent; 17 | 18 | @Getter 19 | public final class ActionProcessor { 20 | 21 | private final PlayerData data; 22 | 23 | private final EvictingList flyingSamples = new EvictingList<>(50); 24 | 25 | private boolean sprinting, sneaking, sendingAction, placing, digging, blocking, 26 | respawning, sendingDig, lagging; 27 | 28 | @Setter private boolean inventory; 29 | 30 | private int heldItemSlot, lastHeldItemSlot, lastDiggingTick, lastPlaceTick, lastBreakTick, 31 | sprintingTicks, sneakingTicks; 32 | 33 | private long lastFlyingTime, ping; 34 | 35 | public ActionProcessor(final PlayerData data) { 36 | this.data = data; 37 | } 38 | 39 | public void handleEntityAction(final WrappedPacketInEntityAction wrapper) { 40 | sendingAction = true; 41 | switch (wrapper.getAction()) { 42 | case START_SPRINTING: 43 | sprinting = true; 44 | break; 45 | case STOP_SPRINTING: 46 | sprinting = false; 47 | break; 48 | case START_SNEAKING: 49 | sneaking = true; 50 | break; 51 | case STOP_SNEAKING: 52 | sneaking = false; 53 | break; 54 | } 55 | } 56 | 57 | public void handleBlockDig(final WrappedPacketInBlockDig wrapper) { 58 | sendingDig = true; 59 | switch (wrapper.getDigType()) { 60 | case START_DESTROY_BLOCK: 61 | digging = true; 62 | break; 63 | case STOP_DESTROY_BLOCK: 64 | case ABORT_DESTROY_BLOCK: 65 | digging = false; 66 | break; 67 | case RELEASE_USE_ITEM: 68 | blocking = true; 69 | break; 70 | } 71 | } 72 | 73 | public void handleClientCommand(final WrappedPacketInClientCommand wrapper) { 74 | switch (wrapper.getClientCommand()) { 75 | case OPEN_INVENTORY_ACHIEVEMENT: 76 | inventory = true; 77 | break; 78 | case PERFORM_RESPAWN: 79 | respawning = true; 80 | break; 81 | } 82 | } 83 | 84 | public void handleHeldItemSlot(final WrappedPacketInHeldItemSlot wrapper) { 85 | this.lastHeldItemSlot = this.heldItemSlot; 86 | this.heldItemSlot = wrapper.getCurrentSelectedSlot(); 87 | } 88 | 89 | public void handleBlockPlace() { 90 | placing = true; 91 | } 92 | 93 | public void handleCloseWindow() { 94 | inventory = false; 95 | } 96 | 97 | public void handleArmAnimation() { 98 | /* 99 | This can be disabled if the client sends a dig packet then immediately start clicking 100 | Which makes it so the player is immune to AutoClicker checks due to his Digging state. 101 | Getting the looking block ensures that the player is not spoofing his digging state. 102 | */ 103 | if (digging && PlayerUtil.getLookingBlock(data.getPlayer(), 5) != null) { 104 | lastDiggingTick = Medusa.INSTANCE.getTickManager().getTicks(); 105 | } 106 | } 107 | 108 | public void handleInteract(final PlayerInteractEvent event) { 109 | if (event.getAction() == Action.LEFT_CLICK_BLOCK) { 110 | lastDiggingTick = Medusa.INSTANCE.getTickManager().getTicks(); 111 | } 112 | } 113 | 114 | public void handleBukkitPlace() { 115 | lastPlaceTick = Medusa.INSTANCE.getTickManager().getTicks(); 116 | } 117 | 118 | public void handleBukkitBlockBreak() { 119 | lastBreakTick = Medusa.INSTANCE.getTickManager().getTicks(); 120 | } 121 | 122 | public void handleFlying() { 123 | blocking = false; 124 | sendingDig = false; 125 | sendingAction = false; 126 | placing = false; 127 | respawning = false; 128 | 129 | sprintingTicks = sprinting ? sprintingTicks + 1 : 0; 130 | sneakingTicks = sneaking ? sneakingTicks + 1 : 0; 131 | 132 | final long delay = System.currentTimeMillis() - lastFlyingTime; 133 | 134 | if (delay > 0) { 135 | flyingSamples.add(delay); 136 | } 137 | 138 | if (flyingSamples.isFull()) { 139 | final double deviation = MathUtil.getStandardDeviation(flyingSamples); 140 | lagging = deviation > 120; 141 | } 142 | lastFlyingTime = System.currentTimeMillis(); 143 | ping = PacketEvents.get().getPlayerUtils().getPing(data.getPlayer()); 144 | } 145 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/processor/ClickProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data.processor; 2 | 3 | import lombok.Getter; 4 | import ai.medusa.anticheat.data.PlayerData; 5 | 6 | @Getter 7 | public final class ClickProcessor { 8 | 9 | private final PlayerData data; 10 | private long lastSwing = -1; 11 | private long delay; 12 | 13 | public ClickProcessor(final PlayerData data) { 14 | this.data = data; 15 | } 16 | 17 | public void handleArmAnimation() { 18 | if (!data.getActionProcessor().isDigging() && !data.getActionProcessor().isPlacing()) { 19 | if (lastSwing > 0) { 20 | delay = System.currentTimeMillis() - lastSwing; 21 | } 22 | lastSwing = System.currentTimeMillis(); 23 | } 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/processor/CombatProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data.processor; 2 | 3 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 4 | import lombok.Getter; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import org.bukkit.entity.Entity; 7 | 8 | 9 | @Getter 10 | public final class CombatProcessor { 11 | 12 | private final PlayerData data; 13 | 14 | private int hitTicks, swings, hits, currentTargets; 15 | 16 | private double hitMissRatio, distance; 17 | 18 | private Entity target, lastTarget; 19 | 20 | public CombatProcessor(final PlayerData data) { 21 | this.data = data; 22 | } 23 | 24 | public void handleUseEntity(final WrappedPacketInUseEntity wrapper) { 25 | if (wrapper.getAction() != WrappedPacketInUseEntity.EntityUseAction.ATTACK || wrapper.getEntity() == null) { 26 | return; 27 | } 28 | 29 | lastTarget = target == null ? wrapper.getEntity() : target; 30 | target = wrapper.getEntity(); 31 | 32 | distance = data.getPlayer().getLocation().toVector().setY(0).distance(target.getLocation().toVector().setY(0)) - .42; 33 | 34 | ++hits; 35 | 36 | hitTicks = 0; 37 | 38 | if (target != lastTarget) { 39 | ++currentTargets; 40 | } 41 | } 42 | 43 | public void handleArmAnimation() { 44 | ++swings; 45 | } 46 | 47 | public void handleFlying() { 48 | ++hitTicks; 49 | currentTargets = 0; 50 | 51 | if (swings > 1) { 52 | hitMissRatio = ((double) hits / (double) swings) * 100; 53 | } 54 | if (hits > 100 || swings > 100) { 55 | hits = swings = 0; 56 | } 57 | } 58 | } 59 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/processor/RotationProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data.processor; 2 | 3 | import ai.medusa.anticheat.util.MathUtil; 4 | import lombok.Getter; 5 | import ai.medusa.anticheat.Medusa; 6 | import ai.medusa.anticheat.data.PlayerData; 7 | 8 | import java.util.ArrayDeque; 9 | 10 | @Getter 11 | public final class RotationProcessor { 12 | 13 | private final PlayerData data; 14 | 15 | private float yaw, pitch, lastYaw, lastPitch, 16 | deltaYaw, deltaPitch, lastDeltaYaw, lastDeltaPitch, 17 | joltYaw, joltPitch, lastJoltYaw, lastJoltPitch, gcd; 18 | 19 | private int sensitivity, lastCinematic, cinematicTicks; 20 | 21 | private final ArrayDeque sensitivitySamples = new ArrayDeque<>(); 22 | 23 | private boolean cinematic; 24 | 25 | private double finalSensitivity; 26 | 27 | public RotationProcessor(final PlayerData data) { 28 | this.data = data; 29 | } 30 | 31 | public void handle(final float yaw, final float pitch) { 32 | lastYaw = this.yaw; 33 | lastPitch = this.pitch; 34 | 35 | this.yaw = yaw; 36 | this.pitch = pitch; 37 | 38 | lastDeltaYaw = deltaYaw; 39 | lastDeltaPitch = deltaPitch; 40 | 41 | deltaYaw = Math.abs(yaw - lastYaw) % 360F; 42 | deltaPitch = Math.abs(pitch - lastPitch); 43 | 44 | lastJoltPitch = joltPitch; 45 | lastJoltYaw = joltYaw; 46 | 47 | joltYaw = Math.abs(deltaYaw - lastDeltaYaw); 48 | joltPitch = Math.abs(deltaPitch - lastDeltaPitch); 49 | 50 | processCinematic(); 51 | 52 | if (deltaPitch > 0 && deltaPitch < 30) { 53 | processSensitivity(); 54 | } 55 | } 56 | 57 | private void processCinematic() { 58 | final float yawAccelAccel = Math.abs(joltYaw - lastJoltYaw); 59 | final float pitchAccelAccel = Math.abs(joltPitch - lastJoltPitch); 60 | 61 | final boolean invalidYaw = yawAccelAccel < .05 && yawAccelAccel > 0; 62 | final boolean invalidPitch = pitchAccelAccel < .05 && pitchAccelAccel > 0; 63 | 64 | final boolean exponentialYaw = String.valueOf(yawAccelAccel).contains("E"); 65 | final boolean exponentialPitch = String.valueOf(pitchAccelAccel).contains("E"); 66 | 67 | if (sensitivity < 100 && (exponentialYaw || exponentialPitch)) { 68 | cinematicTicks += 3; 69 | } else if (invalidYaw || invalidPitch) { 70 | cinematicTicks += 1; 71 | } else { 72 | if (cinematicTicks > 0) cinematicTicks--; 73 | } 74 | if (cinematicTicks > 20) { 75 | cinematicTicks--; 76 | } 77 | 78 | cinematic = cinematicTicks > 8 || (Medusa.INSTANCE.getTickManager().getTicks() - lastCinematic < 120); 79 | 80 | if (cinematic && cinematicTicks > 8) { 81 | lastCinematic = Medusa.INSTANCE.getTickManager().getTicks(); 82 | } 83 | } 84 | 85 | private void processSensitivity() { 86 | final float gcd = (float) MathUtil.getGcd(deltaPitch, lastDeltaPitch); 87 | final double sensitivityModifier = Math.cbrt(0.8333 * gcd); 88 | final double sensitivityStepTwo = (sensitivityModifier / 0.6) - 0.3333; 89 | final double finalSensitivity = sensitivityStepTwo * 200; 90 | 91 | this.finalSensitivity = finalSensitivity; 92 | 93 | sensitivitySamples.add((int)finalSensitivity); 94 | 95 | if (sensitivitySamples.size() >= 40) { 96 | this.sensitivity = MathUtil.getMode(sensitivitySamples); 97 | 98 | final float gcdOne = (sensitivity / 200F) * 0.6F + 0.2F; 99 | this.gcd = gcdOne * gcdOne * gcdOne * 1.2F; 100 | 101 | sensitivitySamples.clear(); 102 | } 103 | } 104 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/data/processor/VelocityProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.data.processor; 2 | 3 | import io.github.retrooper.packetevents.PacketEvents; 4 | import io.github.retrooper.packetevents.packetwrappers.play.in.transaction.WrappedPacketInTransaction; 5 | import io.github.retrooper.packetevents.packetwrappers.play.out.transaction.WrappedPacketOutTransaction; 6 | import lombok.Getter; 7 | import ai.medusa.anticheat.Medusa; 8 | import ai.medusa.anticheat.data.PlayerData; 9 | 10 | import java.util.concurrent.ThreadLocalRandom; 11 | 12 | @Getter 13 | public final class VelocityProcessor { 14 | 15 | private final PlayerData data; 16 | private double velocityX, velocityY, velocityZ, lastVelocityX, lastVelocityY, lastVelocityZ; 17 | private int maxVelocityTicks, velocityTicks, ticksSinceVelocity; 18 | private short transactionID, velocityID; 19 | private long transactionPing, transactionReply; 20 | private boolean verifyingVelocity; 21 | 22 | public VelocityProcessor(final PlayerData data) { 23 | this.data = data; 24 | } 25 | 26 | public void handle(final double velocityX, final double velocityY, final double velocityZ) { 27 | this.ticksSinceVelocity = 0; 28 | 29 | lastVelocityX = this.velocityX; 30 | lastVelocityY = this.velocityY; 31 | lastVelocityZ = this.velocityZ; 32 | 33 | this.velocityX = velocityX; 34 | this.velocityY = velocityY; 35 | this.velocityZ = velocityZ; 36 | 37 | this.velocityID = (short) ThreadLocalRandom.current().nextInt(32767); 38 | this.verifyingVelocity = true; 39 | 40 | PacketEvents.get().getPlayerUtils().sendPacket(data.getPlayer(), new WrappedPacketOutTransaction(0, velocityID, false)); 41 | } 42 | 43 | public void handleTransaction(final WrappedPacketInTransaction wrapper) { 44 | 45 | if (this.verifyingVelocity && wrapper.getActionNumber() == this.velocityID) { 46 | this.verifyingVelocity = false; 47 | this.velocityTicks = Medusa.INSTANCE.getTickManager().getTicks(); 48 | this.maxVelocityTicks = (int) (((lastVelocityZ + lastVelocityX) / 2 + 2) * 15); 49 | } 50 | 51 | if (wrapper.getActionNumber() == transactionID) { 52 | transactionPing = System.currentTimeMillis() - transactionReply; 53 | 54 | transactionID = (short) ThreadLocalRandom.current().nextInt(32767); 55 | PacketEvents.get().getPlayerUtils().sendPacket(data.getPlayer(), new WrappedPacketOutTransaction(0, transactionID, false)); 56 | transactionReply = System.currentTimeMillis(); 57 | } 58 | } 59 | 60 | public void handleFlying() { 61 | ++ticksSinceVelocity; 62 | } 63 | 64 | public boolean isTakingVelocity() { 65 | return Math.abs(Medusa.INSTANCE.getTickManager().getTicks() - this.velocityTicks) < this.maxVelocityTicks; 66 | } 67 | } 68 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/exempt/ExemptProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.exempt; 2 | 3 | import ai.medusa.anticheat.data.PlayerData; 4 | import ai.medusa.anticheat.exempt.type.ExemptType; 5 | import lombok.RequiredArgsConstructor; 6 | 7 | import java.util.Arrays; 8 | import java.util.function.Function; 9 | 10 | @RequiredArgsConstructor 11 | public final class ExemptProcessor { 12 | 13 | private final PlayerData data; 14 | 15 | public boolean isExempt(final ExemptType exemptType) { 16 | return exemptType.getException().apply(data); 17 | } 18 | 19 | public boolean isExempt(final ExemptType... exemptTypes) { 20 | return Arrays.stream(exemptTypes).anyMatch(this::isExempt); 21 | } 22 | 23 | public boolean isExempt(final Function exception) { 24 | return exception.apply(data); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/exempt/type/ExemptType.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.exempt.type; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.data.PlayerData; 5 | import ai.medusa.anticheat.util.PlayerUtil; 6 | import ai.medusa.anticheat.util.ServerUtil; 7 | import lombok.Getter; 8 | 9 | import java.util.function.Function; 10 | 11 | @Getter 12 | public enum ExemptType { 13 | 14 | CHUNK(data -> !data.getPlayer().getWorld().isChunkLoaded(data.getPlayer().getLocation().getBlockX() << 4, 15 | data.getPlayer().getLocation().getBlockZ() << 4)), 16 | 17 | TPS(data -> ServerUtil.getTPS() < 18.5D), 18 | 19 | TELEPORT(data -> data.getPositionProcessor().isTeleporting() || System.currentTimeMillis() - data.getJoinTime() < 2000L), 20 | 21 | VELOCITY(data -> data.getVelocityProcessor().isTakingVelocity()), 22 | 23 | JOINED(data -> System.currentTimeMillis() - data.getJoinTime() < 5000L), 24 | 25 | TRAPDOOR(data -> data.getPositionProcessor().isNearTrapdoor()), 26 | 27 | STEPPED(data -> data.getPositionProcessor().isOnGround() && data.getPositionProcessor().getDeltaY() > 0), 28 | 29 | CINEMATIC(data -> data.getRotationProcessor().isCinematic()), 30 | 31 | SLIME(data -> data.getPositionProcessor().getSinceSlimeTicks() < 30), 32 | 33 | ICE(data -> data.getPositionProcessor().getSinceIceTicks() < 40), 34 | 35 | SLAB(data -> data.getPositionProcessor().isNearSlab()), 36 | 37 | STAIRS(data -> data.getPositionProcessor().isNearStairs()), 38 | 39 | WEB(data -> data.getPositionProcessor().isInWeb()), 40 | 41 | CLIMBABLE(data -> data.getPositionProcessor().isOnClimbable()), 42 | 43 | DIGGING(data -> Medusa.INSTANCE.getTickManager().getTicks() - data.getActionProcessor().getLastDiggingTick() < 10), 44 | 45 | BLOCK_BREAK(data -> Medusa.INSTANCE.getTickManager().getTicks() - data.getActionProcessor().getLastBreakTick() < 10), 46 | 47 | PLACING(data -> Medusa.INSTANCE.getTickManager().getTicks() - data.getActionProcessor().getLastPlaceTick() < 10), 48 | 49 | NEAR_VEHICLE(data -> data.getPositionProcessor().isNearVehicle()), 50 | 51 | INSIDE_VEHICLE(data -> data.getPositionProcessor().getSinceVehicleTicks() < 20), 52 | 53 | LIQUID(data -> data.getPositionProcessor().isInLiquid()), 54 | 55 | UNDER_BLOCK(data -> data.getPositionProcessor().isBlockNearHead()), 56 | 57 | PISTON(data -> data.getPositionProcessor().getSinceNearPistonTicks() < 50), 58 | 59 | VOID(data -> data.getPlayer().getLocation().getY() < 4), 60 | 61 | COMBAT(data -> data.getCombatProcessor().getHitTicks() < 5), 62 | 63 | FLYING(data -> data.getPositionProcessor().getSinceFlyingTicks() < 40), 64 | 65 | AUTO_CLICKER(data -> data.getExemptProcessor().isExempt(ExemptType.PLACING, ExemptType.DIGGING, ExemptType.BLOCK_BREAK)), 66 | 67 | DEPTH_STRIDER(data -> PlayerUtil.getDepthStriderLevel(data.getPlayer()) > 0); 68 | 69 | private final Function exception; 70 | 71 | ExemptType(final Function exception) { 72 | this.exception = exception; 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/listener/BukkitEventListener.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.listener; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.data.PlayerData; 5 | import org.bukkit.event.EventHandler; 6 | import org.bukkit.event.Listener; 7 | import org.bukkit.event.block.BlockBreakEvent; 8 | import org.bukkit.event.block.BlockPlaceEvent; 9 | import org.bukkit.event.player.PlayerInteractEvent; 10 | 11 | public final class BukkitEventListener implements Listener { 12 | 13 | @EventHandler 14 | public void onBlockBreak(final BlockBreakEvent event) { 15 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer()); 16 | if (data != null) { 17 | data.getActionProcessor().handleBukkitBlockBreak(); 18 | } 19 | } 20 | 21 | @EventHandler 22 | public void onPlayerInteract(final PlayerInteractEvent event) { 23 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer()); 24 | if (data != null) { 25 | data.getActionProcessor().handleInteract(event); 26 | } 27 | } 28 | 29 | @EventHandler 30 | public void onBlockPlace(final BlockPlaceEvent event) { 31 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer()); 32 | if (data != null) { 33 | data.getActionProcessor().handleBukkitPlace(); 34 | } 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/listener/ClientBrandListener.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.listener; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.data.PlayerData; 5 | import org.bukkit.entity.Player; 6 | import org.bukkit.event.EventHandler; 7 | import org.bukkit.event.Listener; 8 | import org.bukkit.event.player.PlayerJoinEvent; 9 | import org.bukkit.plugin.messaging.PluginMessageListener; 10 | 11 | import java.io.UnsupportedEncodingException; 12 | import java.lang.reflect.InvocationTargetException; 13 | 14 | public final class ClientBrandListener implements PluginMessageListener, Listener { 15 | 16 | @Override 17 | public void onPluginMessageReceived(final String channel, final Player player, final byte[] msg) { 18 | try { 19 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(player); 20 | if (data == null) return; 21 | data.setClientBrand(new String(msg, "UTF-8").substring(1)); 22 | } catch (UnsupportedEncodingException e) { 23 | e.printStackTrace(); 24 | } 25 | } 26 | 27 | @EventHandler 28 | public void onJoin(final PlayerJoinEvent event) { 29 | final Player player = event.getPlayer(); 30 | addChannel(player, "MC|BRAND"); 31 | } 32 | 33 | private void addChannel(final Player player, final String channel) { 34 | try { 35 | player.getClass().getMethod("addChannel", String.class).invoke(player, channel); 36 | } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException 37 | | SecurityException e) { 38 | e.printStackTrace(); 39 | } 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/listener/JoinQuitListener.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.listener; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.util.anticheat.AlertUtil; 5 | import org.bukkit.event.EventHandler; 6 | import org.bukkit.event.Listener; 7 | import org.bukkit.event.player.PlayerJoinEvent; 8 | import org.bukkit.event.player.PlayerQuitEvent; 9 | 10 | public final class JoinQuitListener implements Listener { 11 | 12 | @EventHandler 13 | public void onPlayerJoin(final PlayerJoinEvent event) { 14 | Medusa.INSTANCE.getPlayerDataManager().add(event.getPlayer()); 15 | 16 | if (event.getPlayer().hasPermission("medusa.alerts")) { 17 | AlertUtil.toggleAlerts(Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer())); 18 | } 19 | } 20 | 21 | @EventHandler 22 | public void onPlayerQuit(final PlayerQuitEvent event) { 23 | Medusa.INSTANCE.getPlayerDataManager().remove(event.getPlayer()); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/listener/NetworkListener.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.listener; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.data.PlayerData; 5 | 6 | import io.github.retrooper.packetevents.event.PacketListenerDynamic; 7 | import ai.medusa.anticheat.packet.Packet; 8 | import io.github.retrooper.packetevents.event.impl.PacketPlayReceiveEvent; 9 | import io.github.retrooper.packetevents.event.impl.PacketPlaySendEvent; 10 | 11 | 12 | public final class NetworkListener extends PacketListenerDynamic { 13 | 14 | @Override 15 | public void onPacketPlayReceive(final PacketPlayReceiveEvent event) { 16 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer()); 17 | 18 | handle: { 19 | if (data == null) break handle; 20 | 21 | Medusa.INSTANCE.getPacketExecutor().execute(() -> Medusa.INSTANCE.getReceivingPacketProcessor() 22 | .handle(data, new Packet(Packet.Direction.RECEIVE, event.getNMSPacket(), event.getPacketId()))); 23 | } 24 | } 25 | 26 | @Override 27 | public void onPacketPlaySend(final PacketPlaySendEvent event) { 28 | final PlayerData data = Medusa.INSTANCE.getPlayerDataManager().getPlayerData(event.getPlayer()); 29 | 30 | handle: { 31 | if (data == null) break handle; 32 | 33 | Medusa.INSTANCE.getPacketExecutor().execute(() -> Medusa.INSTANCE.getSendingPacketProcessor() 34 | .handle(data, new Packet(Packet.Direction.SEND, event.getNMSPacket(), event.getPacketId()))); 35 | } 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/manager/PlayerDataManager.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.manager; 2 | 3 | import ai.medusa.anticheat.data.PlayerData; 4 | import org.bukkit.entity.Player; 5 | 6 | import java.util.Collection; 7 | import java.util.Map; 8 | import java.util.UUID; 9 | import java.util.concurrent.ConcurrentHashMap; 10 | 11 | public final class PlayerDataManager { 12 | 13 | private final Map playerDataMap = new ConcurrentHashMap<>(); 14 | 15 | public PlayerData getPlayerData(final Player player) { 16 | return playerDataMap.get(player.getUniqueId()); 17 | } 18 | 19 | public void add(final Player player) { 20 | playerDataMap.put(player.getUniqueId(), new PlayerData(player)); 21 | } 22 | 23 | public boolean has(final Player player) { 24 | return this.playerDataMap.containsKey(player.getUniqueId()); 25 | } 26 | 27 | public void remove(final Player player) { 28 | playerDataMap.remove(player.getUniqueId()); 29 | } 30 | 31 | public Collection getAllData() { 32 | return playerDataMap.values(); 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/manager/ThemeManager.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.manager; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.config.Config; 5 | import lombok.AllArgsConstructor; 6 | import lombok.Getter; 7 | import org.bukkit.ChatColor; 8 | 9 | import java.util.ArrayList; 10 | import java.util.List; 11 | 12 | public final class ThemeManager { 13 | 14 | public static final List themes = new ArrayList<>(); 15 | 16 | public static void setup() { 17 | for (String str : Config.THEMES) { 18 | final String message = Medusa.INSTANCE.getPlugin().getConfig().getString("appearance.themes." + str + ".message"); 19 | final List colors = Medusa.INSTANCE.getPlugin().getConfig().getStringList("appearance.themes." + str + ".colors"); 20 | 21 | final List accentColourList = new ArrayList<>(); 22 | 23 | for (String string : colors) { 24 | accentColourList.add(ChatColor.getByChar(string.charAt(1))); 25 | } 26 | 27 | final Theme theme = new Theme(str, message, accentColourList); 28 | themes.add(theme); 29 | } 30 | } 31 | 32 | @Getter 33 | @AllArgsConstructor 34 | public static class Theme { 35 | private final String name; 36 | private final String alertFormat; 37 | private final List accentColours; 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/manager/TickManager.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.manager; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.util.type.Pair; 5 | import lombok.Getter; 6 | import org.bukkit.Bukkit; 7 | import org.bukkit.Location; 8 | import org.bukkit.entity.Entity; 9 | import org.bukkit.scheduler.BukkitTask; 10 | 11 | public final class TickManager implements Runnable { 12 | 13 | @Getter 14 | private int ticks; 15 | private static BukkitTask task; 16 | 17 | public void start() { 18 | assert task == null : "TickProcessor has already been started!"; 19 | 20 | task = Bukkit.getScheduler().runTaskTimer(Medusa.INSTANCE.getPlugin(), this, 0L, 1L); 21 | } 22 | 23 | public void stop() { 24 | if (task == null) return; 25 | 26 | task.cancel(); 27 | task = null; 28 | } 29 | 30 | @Override 31 | public void run() { 32 | ticks++; 33 | 34 | Medusa.INSTANCE.getPlayerDataManager().getAllData().parallelStream() 35 | .forEach(data -> { 36 | final Entity target = data.getCombatProcessor().getTarget(); 37 | final Entity lastTarget = data.getCombatProcessor().getLastTarget(); 38 | if(target != null && lastTarget != null) { 39 | if (target != lastTarget) { 40 | data.getTargetLocations().clear(); 41 | } 42 | Location location = target.getLocation(); 43 | data.getTargetLocations().add(new Pair<>(location, ticks)); 44 | } 45 | }); 46 | } 47 | 48 | } 49 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/packet/Packet.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.packet; 2 | 3 | import io.github.retrooper.packetevents.packettype.PacketType; 4 | import io.github.retrooper.packetevents.packetwrappers.NMSPacket; 5 | import lombok.Getter; 6 | 7 | @Getter 8 | public final class Packet { 9 | 10 | private final Direction direction; 11 | private final NMSPacket rawPacket; 12 | private final byte packetId; 13 | 14 | public Packet(Direction direction, NMSPacket rawPacket, byte packetId) { 15 | this.direction = direction; 16 | this.rawPacket = rawPacket; 17 | this.packetId = packetId; 18 | } 19 | 20 | public boolean isReceiving() { 21 | return direction == Direction.RECEIVE; 22 | } 23 | 24 | public boolean isSending() { 25 | return direction == Direction.SEND; 26 | } 27 | 28 | public boolean isFlying() { 29 | return isReceiving() && PacketType.Play.Client.Util.isInstanceOfFlying(packetId); 30 | } 31 | 32 | public boolean isUseEntity() { 33 | return isReceiving() && packetId == PacketType.Play.Client.USE_ENTITY; 34 | } 35 | 36 | public boolean isExplosion() { 37 | return isSending() && packetId == PacketType.Play.Server.EXPLOSION; 38 | } 39 | 40 | public boolean isRotation() { 41 | return isReceiving() && (packetId == PacketType.Play.Client.LOOK || packetId == PacketType.Play.Client.POSITION_LOOK); 42 | } 43 | 44 | public boolean isPosition() { 45 | return isReceiving() && (packetId == PacketType.Play.Client.POSITION || packetId == PacketType.Play.Client.POSITION_LOOK); 46 | } 47 | 48 | public boolean isArmAnimation() { 49 | return isReceiving() && packetId == PacketType.Play.Client.ARM_ANIMATION; 50 | } 51 | 52 | public boolean isAbilities() { 53 | return isReceiving() && packetId == PacketType.Play.Client.ABILITIES; 54 | } 55 | 56 | public boolean isBlockPlace() { 57 | return isReceiving() && packetId == PacketType.Play.Client.BLOCK_PLACE; 58 | } 59 | 60 | public boolean isBlockDig() { 61 | return isReceiving() && packetId == PacketType.Play.Client.BLOCK_DIG; 62 | } 63 | 64 | public boolean isWindowClick() { return isReceiving() && packetId == PacketType.Play.Client.WINDOW_CLICK; } 65 | 66 | public boolean isEntityAction() { 67 | return isReceiving() && packetId == PacketType.Play.Client.ENTITY_ACTION; 68 | } 69 | 70 | public boolean isPosLook() { 71 | return isReceiving() && packetId == PacketType.Play.Client.POSITION_LOOK; 72 | } 73 | 74 | public boolean isCloseWindow() { return isReceiving() && packetId == PacketType.Play.Client.CLOSE_WINDOW; } 75 | 76 | public boolean isKeepAlive() { return isReceiving() && packetId == PacketType.Play.Client.KEEP_ALIVE; } 77 | 78 | public boolean isSteerVehicle() { 79 | return isReceiving() && packetId == PacketType.Play.Client.STEER_VEHICLE; 80 | } 81 | 82 | public boolean isHeldItemSlot() { 83 | return isReceiving() && packetId == PacketType.Play.Client.HELD_ITEM_SLOT; 84 | } 85 | 86 | public boolean isClientCommand() { 87 | return isReceiving() && packetId == PacketType.Play.Client.CLIENT_COMMAND; 88 | } 89 | 90 | public boolean isCustomPayload() { return isReceiving() && packetId == PacketType.Play.Client.CUSTOM_PAYLOAD; } 91 | 92 | public boolean isIncomingTransaction () { 93 | return isReceiving() && packetId == PacketType.Play.Client.TRANSACTION; 94 | } 95 | 96 | public boolean isSendingTransaction() { 97 | return isSending() && packetId == PacketType.Play.Server.TRANSACTION; 98 | } 99 | 100 | public boolean isAcceptingTeleport() { 101 | return isReceiving() && packetId == PacketType.Play.Client.TELEPORT_ACCEPT; 102 | } 103 | public boolean isTeleport() { 104 | return isSending() && packetId == PacketType.Play.Server.ENTITY_TELEPORT; 105 | } 106 | 107 | public boolean isOutPosition() { 108 | return isSending() && packetId == PacketType.Play.Server.POSITION; 109 | } 110 | 111 | public boolean isVelocity() { 112 | return isSending() && packetId == PacketType.Play.Server.ENTITY_VELOCITY; 113 | } 114 | 115 | public boolean isRelEntityMove() { 116 | return isSending() && packetId == PacketType.Play.Server.REL_ENTITY_MOVE; 117 | } 118 | 119 | public enum Direction { SEND, RECEIVE } 120 | } 121 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/packet/processor/ReceivingPacketProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.packet.processor; 2 | 3 | import ai.medusa.anticheat.data.PlayerData; 4 | import io.github.retrooper.packetevents.packetwrappers.play.in.blockdig.WrappedPacketInBlockDig; 5 | import io.github.retrooper.packetevents.packetwrappers.play.in.clientcommand.WrappedPacketInClientCommand; 6 | import io.github.retrooper.packetevents.packetwrappers.play.in.entityaction.WrappedPacketInEntityAction; 7 | import io.github.retrooper.packetevents.packetwrappers.play.in.flying.WrappedPacketInFlying; 8 | import io.github.retrooper.packetevents.packetwrappers.play.in.helditemslot.WrappedPacketInHeldItemSlot; 9 | import io.github.retrooper.packetevents.packetwrappers.play.in.transaction.WrappedPacketInTransaction; 10 | import io.github.retrooper.packetevents.packetwrappers.play.in.useentity.WrappedPacketInUseEntity; 11 | import ai.medusa.anticheat.packet.Packet; 12 | 13 | public final class ReceivingPacketProcessor { 14 | 15 | public void handle(final PlayerData data, final Packet packet) { 16 | if (packet.isEntityAction()) { 17 | final WrappedPacketInEntityAction wrapper = new WrappedPacketInEntityAction(packet.getRawPacket()); 18 | 19 | data.getActionProcessor().handleEntityAction(wrapper); 20 | } else if (packet.isBlockDig()) { 21 | final WrappedPacketInBlockDig wrapper = new WrappedPacketInBlockDig(packet.getRawPacket()); 22 | 23 | data.getActionProcessor().handleBlockDig(wrapper); 24 | } else if (packet.isClientCommand()) { 25 | final WrappedPacketInClientCommand wrapper = new WrappedPacketInClientCommand(packet.getRawPacket()); 26 | 27 | data.getActionProcessor().handleClientCommand(wrapper); 28 | } else if (packet.isBlockPlace()) { 29 | data.getActionProcessor().handleBlockPlace(); 30 | } else if (packet.isHeldItemSlot()) { 31 | final WrappedPacketInHeldItemSlot wrapper = new WrappedPacketInHeldItemSlot(packet.getRawPacket()); 32 | data.getActionProcessor().handleHeldItemSlot(wrapper); 33 | } else if (packet.isCloseWindow()) { 34 | data.getActionProcessor().handleCloseWindow(); 35 | } else if (packet.isUseEntity()) { 36 | final WrappedPacketInUseEntity wrapper = new WrappedPacketInUseEntity(packet.getRawPacket()); 37 | data.getCombatProcessor().handleUseEntity(wrapper); 38 | } else if (packet.isFlying()) { 39 | final WrappedPacketInFlying wrapper = new WrappedPacketInFlying(packet.getRawPacket()); 40 | 41 | data.getActionProcessor().handleFlying(); 42 | data.getVelocityProcessor().handleFlying(); 43 | data.getCombatProcessor().handleFlying(); 44 | 45 | if (wrapper.isPosition()) { 46 | data.getPositionProcessor().handle(wrapper.getX(), wrapper.getY(), wrapper.getZ(), wrapper.isOnGround()); 47 | } 48 | if (wrapper.isLook()) { 49 | data.getRotationProcessor().handle(wrapper.getYaw(), wrapper.getPitch()); 50 | } 51 | } else if (packet.isArmAnimation()) { 52 | data.getClickProcessor().handleArmAnimation(); 53 | data.getActionProcessor().handleArmAnimation(); 54 | data.getCombatProcessor().handleArmAnimation(); 55 | } else if (packet.isIncomingTransaction()) { 56 | final WrappedPacketInTransaction wrapper = new WrappedPacketInTransaction(packet.getRawPacket()); 57 | data.getVelocityProcessor().handleTransaction(wrapper); 58 | } 59 | if (!data.getPlayer().hasPermission("medusa.bypass") || data.getPlayer().isOp()) { 60 | data.getChecks().forEach(check -> check.handle(packet)); 61 | } 62 | } 63 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/packet/processor/SendingPacketProcessor.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.packet.processor; 2 | 3 | import ai.medusa.anticheat.data.PlayerData; 4 | import io.github.retrooper.packetevents.packetwrappers.play.out.entityvelocity.WrappedPacketOutEntityVelocity; 5 | import ai.medusa.anticheat.packet.Packet; 6 | import io.github.retrooper.packetevents.packetwrappers.play.out.explosion.WrappedPacketOutExplosion; 7 | import io.github.retrooper.packetevents.packetwrappers.play.out.position.WrappedPacketOutPosition; 8 | 9 | public final class SendingPacketProcessor { 10 | 11 | public void handle(final PlayerData data, final Packet packet) { 12 | if (packet.isVelocity()) { 13 | final WrappedPacketOutEntityVelocity wrapper = new WrappedPacketOutEntityVelocity(packet.getRawPacket()); 14 | if (wrapper.getEntity() == data.getPlayer()) { 15 | data.getVelocityProcessor().handle(wrapper.getVelocityX(), wrapper.getVelocityY(), wrapper.getVelocityZ()); 16 | } 17 | } 18 | if (packet.isExplosion()) { 19 | final WrappedPacketOutExplosion wrapper = new WrappedPacketOutExplosion(packet.getRawPacket()); 20 | data.getVelocityProcessor().handle(wrapper.getPlayerMotionX(), wrapper.getPlayerMotionY(), wrapper.getPlayerMotionZ()); 21 | } 22 | if (packet.isOutPosition()) { 23 | final WrappedPacketOutPosition wrapper = new WrappedPacketOutPosition(packet.getRawPacket()); 24 | data.getPositionProcessor().handleServerPosition(wrapper); 25 | } 26 | if (!data.getPlayer().hasPermission("medusa.bypass") || data.getPlayer().isOp()) { 27 | data.getChecks().forEach(check -> check.handle(packet)); 28 | } 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/ColorUtil.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util; 2 | 3 | import lombok.experimental.UtilityClass; 4 | import org.bukkit.ChatColor; 5 | 6 | @UtilityClass 7 | public final class ColorUtil { 8 | 9 | public String translate(final String string) { 10 | return ChatColor.translateAlternateColorCodes('&', string); 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/HitboxExpansion.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util; 2 | 3 | import lombok.Getter; 4 | import org.bukkit.entity.Entity; 5 | 6 | /** 7 | * Created on 12/5/2020 Package ai.medusa.anticheat.util by infinitesm 8 | * 9 | * This is an enum of entity hitbox expansions, found from 10 | * https://technical-minecraft.fandom.com/wiki/Entity_Hitbox_Sizes. 11 | * 12 | * Names of the entities were found in EntityType.class. 13 | * 14 | * This enum is not an accurate representation of hitbox expansions for each entity, 15 | * if you need something that's accurate, look elsewhere. This is somewhat accurate and 16 | * helps to prevent Hitbox (A) from falsing due to entities with large hitbox expansions. 17 | */ 18 | 19 | @Getter 20 | public enum HitboxExpansion { 21 | 22 | PLAYER("Player", 0.4), 23 | CREEPER("Creeper", 0.4), 24 | SKELETON("Skeleton", 0.4), 25 | SPIDER("Spider", 0.8), 26 | GIANT("Giant", 2.5), 27 | ZOMBIE("Zombie", 0.4), 28 | SLIME("Slime", 1.12), //Works for large slimes only for now. 29 | GHAST("Ghast", 2.1), 30 | PIG_ZOMBIE("PigZombie", 0.4), 31 | ENDERMAN("Enderman", 0.4), 32 | CAVE_SPIDER("CaveSpider", 0.45), 33 | SILVERFISH("Silverfish", 0.3), 34 | BLAZE("Blaze", 0.4), 35 | MAGMA_CUBE("LavaSlime", 1.12), 36 | ENDER_DRAGON("EnderDragon", 8.1), 37 | WITHER("WitherBoss", 0.55), 38 | BAT("Bat", 0.35), 39 | WITCH("Witch", 0.4), 40 | ENDERMITE("Endermite", 0.3), 41 | GUARDIAN("Guardian",0.525), 42 | PIG("Pig", 0.55), //Works for both baby and grown pigs. 43 | SHEEP("Sheep", 0.55), 44 | COW("Cow", 0.55), 45 | CHICKEN("Chicken", 0.3), //Works for both baby and grown chickens. 46 | SQUID("Squid", 0.5), 47 | WOLF("Wolf", 0.5), //Works for both baby and grown wolves. 48 | MUSHROOM_COW("MushroomCow", 0.55), 49 | SNOWMAN("SnowMan", 0.45), 50 | OCELOT("Ozelot", 0.4), 51 | IRON_GOLEM("VillagerGolem", 0.8), 52 | HORSE("EntityHorse", 0.7982), 53 | RABBIT("Rabbit", 0.3), //Works for both baby and grown rabbits. 54 | VILLAGER("Villager", 0.4); 55 | 56 | private final double expansion; 57 | private final String name; 58 | 59 | HitboxExpansion(final String name, final double expansion) { 60 | this.name = name; 61 | this.expansion = expansion; 62 | } 63 | 64 | public static double getExpansion(final Entity entity) { 65 | for (HitboxExpansion hitboxExpansion : values()) { 66 | final String name = entity.getType().getName(); 67 | if (name != null) { 68 | if (name.equalsIgnoreCase(hitboxExpansion.getName())) { 69 | return hitboxExpansion.getExpansion(); 70 | } 71 | } 72 | } 73 | return 0.4D; 74 | } 75 | } 76 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/ReflectionUtil.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util; 2 | 3 | import lombok.experimental.UtilityClass; 4 | import org.bukkit.Bukkit; 5 | import org.bukkit.entity.Entity; 6 | import org.bukkit.util.Vector; 7 | import ai.medusa.anticheat.util.type.BoundingBox; 8 | import java.lang.reflect.Field; 9 | import java.lang.reflect.InvocationTargetException; 10 | import java.lang.reflect.Method; 11 | 12 | @UtilityClass 13 | public final class ReflectionUtil { 14 | 15 | /** 16 | * We can make a caching system for this in order to be somewhat more efficient. 17 | * Reflection tends to be heavy, especially if we're using it every tick. 18 | * Maps would be great! 19 | */ 20 | 21 | private String versionString; 22 | 23 | public Field getField(Class clazz, String fieldName) { 24 | try { 25 | return clazz.getField(fieldName); 26 | } catch (NoSuchFieldException e) { 27 | e.printStackTrace(); 28 | } 29 | return null; 30 | } 31 | 32 | public Method getMethod(Class clazz, String methodName, Class... params) { 33 | try { 34 | return clazz.getMethod(methodName, params); 35 | } catch (NoSuchMethodException e) { 36 | e.printStackTrace(); 37 | } 38 | return null; 39 | } 40 | 41 | public String getVersion() { 42 | if (versionString == null) { 43 | String name = Bukkit.getServer().getClass().getPackage().getName(); 44 | versionString = name.substring(name.lastIndexOf('.') + 1) + "."; 45 | } 46 | 47 | return versionString; 48 | } 49 | 50 | public Class getNMSClass(String nmsClassName) { 51 | final String clazzName = "net.minecraft.server." + getVersion() + nmsClassName; 52 | try { 53 | return Class.forName(clazzName); 54 | } catch (Throwable t) { 55 | t.printStackTrace(); 56 | } 57 | 58 | return null; 59 | } 60 | 61 | public Class getOBCClass(String obcClassName) { 62 | final String clazzName = "org.bukkit.craftbukkit." + getVersion() + obcClassName; 63 | try { 64 | return Class.forName(clazzName); 65 | } catch (Throwable t) { 66 | t.printStackTrace(); 67 | } 68 | 69 | return null; 70 | } 71 | 72 | public static Object craftEntity(Entity entity) { 73 | try { 74 | return getMethod(getOBCClass("entity.CraftEntity"), "getHandle").invoke(entity); 75 | } catch (IllegalAccessException | InvocationTargetException e) { 76 | e.printStackTrace(); 77 | } 78 | 79 | return null; 80 | } 81 | 82 | public BoundingBox getBoundingBox(Entity entity) { 83 | try { 84 | final Object nmsBoundingBox = getMethod(getNMSClass("Entity"), "getBoundingBox") 85 | .invoke(craftEntity(entity)); 86 | 87 | return toBoundingBox(nmsBoundingBox); 88 | } catch (IllegalAccessException | InvocationTargetException e) { 89 | e.printStackTrace(); 90 | } 91 | 92 | return null; 93 | } 94 | 95 | public BoundingBox toBoundingBox(Object aaBB) { 96 | 97 | final Vector min = getBoxMin(aaBB); 98 | final Vector max = getBoxMax(aaBB); 99 | 100 | return new BoundingBox(min, max); 101 | } 102 | 103 | private Vector getBoxMin(Object box) { 104 | 105 | double x = 0D; 106 | double y = 0D; 107 | double z = 0D; 108 | 109 | Class boxClass = box.getClass(); 110 | 111 | try { 112 | if (!ServerUtil.isHigherThan1_13_2()) { 113 | x = (double) getField(boxClass, "a").get(box); 114 | y = (double) getField(boxClass, "b").get(box); 115 | z = (double) getField(boxClass, "c").get(box); 116 | } else { 117 | x = (double) getField(boxClass, "minX").get(box); 118 | y = (double) getField(boxClass, "minY").get(box); 119 | z = (double) getField(boxClass, "minZ").get(box); 120 | } 121 | } catch (IllegalAccessException e) { 122 | e.printStackTrace(); 123 | } 124 | 125 | return new Vector(x, y, z); 126 | } 127 | 128 | private Vector getBoxMax(Object box) { 129 | 130 | double x = 0D; 131 | double y = 0D; 132 | double z = 0D; 133 | 134 | Class boxClass = box.getClass(); 135 | 136 | try { 137 | if (!ServerUtil.isHigherThan1_13_2()) { 138 | x = (double) getField(boxClass, "d").get(box); 139 | y = (double) getField(boxClass, "e").get(box); 140 | z = (double) getField(boxClass, "f").get(box); 141 | } else { 142 | x = (double) getField(boxClass, "maxX").get(box); 143 | y = (double) getField(boxClass, "maxY").get(box); 144 | z = (double) getField(boxClass, "maxZ").get(box); 145 | } 146 | } catch (IllegalAccessException e) { 147 | e.printStackTrace(); 148 | } 149 | 150 | return new Vector(x, y, z); 151 | } 152 | } -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/ServerUtil.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util; 2 | 3 | import io.github.retrooper.packetevents.PacketEvents; 4 | import io.github.retrooper.packetevents.utils.server.ServerVersion; 5 | import lombok.experimental.UtilityClass; 6 | 7 | @UtilityClass 8 | public final class ServerUtil { 9 | 10 | public double getTPS() { 11 | return PacketEvents.get().getServerUtils().getTPS(); 12 | } 13 | 14 | public ServerVersion getServerVersion() { 15 | return PacketEvents.get().getServerUtils().getVersion(); 16 | } 17 | 18 | public boolean isLowerThan1_8() { 19 | return getServerVersion().isLowerThan(ServerVersion.v_1_8); 20 | } 21 | 22 | public boolean isHigherThan1_13_2() { 23 | return getServerVersion().isHigherThan(ServerVersion.v_1_13_2); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/anticheat/AlertUtil.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.anticheat; 2 | 3 | import ai.medusa.api.listener.MedusaSendAlertEvent; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import ai.medusa.anticheat.util.ColorUtil; 7 | import ai.medusa.anticheat.util.PlayerUtil; 8 | import ai.medusa.anticheat.util.ServerUtil; 9 | import io.github.retrooper.packetevents.PacketEvents; 10 | import lombok.Getter; 11 | import ai.medusa.anticheat.config.Config; 12 | import lombok.experimental.UtilityClass; 13 | import net.md_5.bungee.api.chat.ClickEvent; 14 | import net.md_5.bungee.api.chat.ComponentBuilder; 15 | import net.md_5.bungee.api.chat.HoverEvent; 16 | import net.md_5.bungee.api.chat.TextComponent; 17 | import org.bukkit.Bukkit; 18 | 19 | import java.text.DecimalFormat; 20 | import java.util.HashSet; 21 | import java.util.Set; 22 | 23 | @Getter 24 | @UtilityClass 25 | public final class AlertUtil { 26 | 27 | private final Set alerts = new HashSet<>(); 28 | 29 | public ToggleAlertType toggleAlerts(final PlayerData data) { 30 | if (alerts.contains(data)) { 31 | alerts.remove(data); 32 | return ToggleAlertType.REMOVE; 33 | } else { 34 | alerts.add(data); 35 | return ToggleAlertType.ADD; 36 | } 37 | } 38 | 39 | public void handleAlert(final Check check, final PlayerData data, final String info) { 40 | final TextComponent alertMessage = new TextComponent(ColorUtil.translate(Config.ALERT_FORMAT) 41 | .replaceAll("%player%", data.getPlayer().getName()) 42 | .replaceAll("%uuid%", data.getPlayer().getUniqueId().toString()) 43 | .replaceAll("%checkName%", check.getJustTheName()) 44 | .replaceAll("%ping%", Integer.toString(PlayerUtil.getPing(data.getPlayer()))) 45 | .replaceAll("%checkType%", Character.toString(check.getType())) 46 | .replaceAll("%dev%", check.getCheckInfo().experimental() ? ColorUtil.translate("&7*") : "") 47 | .replaceAll("%vl%", Integer.toString(check.getVl())) 48 | .replaceAll("%maxvl%", Integer.toString(check.getMaxVl())) 49 | .replaceAll("%ping%", Integer.toString(PlayerUtil.getPing(data.getPlayer()))) 50 | .replaceAll("%tps%", new DecimalFormat("##.##").format(ServerUtil.getTPS()))); 51 | 52 | alertMessage.setClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/tp " + data.getPlayer().getName())); 53 | alertMessage.setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ComponentBuilder(ColorUtil.translate( 54 | Config.ACCENT_ONE + "Description: &7" + check.getCheckInfo().description() + 55 | "\n" + Config.ACCENT_ONE + "Info: &7" + info + 56 | "\n" + Config.ACCENT_ONE + "Ping: &7" + PlayerUtil.getPing(data.getPlayer()) + 57 | "\n" + Config.ACCENT_ONE + "TPS: &7" + String.format("%.2f", PacketEvents.get().getServerUtils().getTPS()) + 58 | "\n" + Config.ACCENT_TWO + "Click to teleport.")).create())); 59 | 60 | final MedusaSendAlertEvent event = new MedusaSendAlertEvent(alertMessage, data.getPlayer(), check, info); 61 | Bukkit.getPluginManager().callEvent(event); 62 | 63 | if (event.isCancelled()) return; 64 | 65 | alerts.forEach(data1 -> data1.getPlayer().spigot().sendMessage(alertMessage)); 66 | } 67 | 68 | public enum ToggleAlertType { 69 | ADD, REMOVE; 70 | } 71 | } 72 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/anticheat/PunishUtil.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.anticheat; 2 | 3 | import ai.medusa.anticheat.Medusa; 4 | import ai.medusa.anticheat.check.Check; 5 | import ai.medusa.anticheat.data.PlayerData; 6 | import lombok.experimental.UtilityClass; 7 | import org.bukkit.Bukkit; 8 | 9 | @UtilityClass 10 | public final class PunishUtil { 11 | 12 | public void punish(final Check check, final PlayerData data) { 13 | if (!check.getPunishCommand().isEmpty()) { 14 | Bukkit.getScheduler().runTask(Medusa.INSTANCE.getPlugin(), () -> 15 | Bukkit.getServer().dispatchCommand(Bukkit.getServer().getConsoleSender(), check.getPunishCommand() 16 | .replaceAll("%player%", data.getPlayer().getName()) 17 | .replaceAll("%checkName%", check.getJustTheName()) 18 | .replaceAll("%checkType", String.valueOf(check.getType())))); 19 | } 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/type/CustomLocation.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.type; 2 | 3 | import lombok.Getter; 4 | import lombok.Setter; 5 | import org.bukkit.Location; 6 | import org.bukkit.World; 7 | import org.bukkit.util.Vector; 8 | 9 | @Getter 10 | @Setter 11 | public final class CustomLocation { 12 | 13 | private World world; 14 | private double x, y, z; 15 | private float yaw, pitch; 16 | private boolean onGround; 17 | private long timeStamp; 18 | 19 | public CustomLocation(World world, double x, double y, double z, float yaw, float pitch, boolean onGround) { 20 | this.world = world; 21 | this.x = x; 22 | this.y = y; 23 | this.z = z; 24 | this.yaw = yaw; 25 | this.pitch = pitch; 26 | this.onGround = onGround; 27 | this.timeStamp = System.currentTimeMillis(); 28 | } 29 | 30 | public Vector toVector() { 31 | return new Vector(x, y, z); 32 | } 33 | 34 | public CustomLocation offset(double x, double y, double z, float yaw, float pitch) { 35 | return new CustomLocation(world, this.x + x, this.y + y, this.z + z, this.yaw + yaw, this.pitch + pitch, this.onGround); 36 | } 37 | 38 | public CustomLocation clone() { 39 | return new CustomLocation(world, x, y, z, yaw, pitch, onGround); 40 | } 41 | 42 | public static CustomLocation fromBukkit(Location location) { 43 | return new CustomLocation(location.getWorld(), location.getX(), location.getY(), location.getZ(), location.getYaw(), location.getPitch(), false); 44 | } 45 | 46 | public Location toBukkit(){ return new Location(world, x, y, z); } 47 | 48 | public Vector getDirection() { 49 | Vector vector = new Vector(); 50 | double rotX = this.getYaw(); 51 | double rotY = this.getPitch(); 52 | vector.setY(-Math.sin(Math.toRadians(rotY))); 53 | double xz = Math.cos(Math.toRadians(rotY)); 54 | vector.setX(-xz * Math.sin(Math.toRadians(rotX))); 55 | vector.setZ(xz * Math.cos(Math.toRadians(rotX))); 56 | return vector; 57 | } 58 | } 59 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/type/EvictingList.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.type; 2 | 3 | import lombok.Getter; 4 | 5 | import java.util.Collection; 6 | import java.util.LinkedList; 7 | 8 | public final class EvictingList extends LinkedList { 9 | 10 | @Getter 11 | private final int maxSize; 12 | 13 | public EvictingList(int maxSize) { 14 | this.maxSize = maxSize; 15 | } 16 | 17 | public EvictingList(Collection c, int maxSize) { 18 | super(c); 19 | this.maxSize = maxSize; 20 | } 21 | 22 | @Override 23 | public boolean add(T t) { 24 | if (size() >= getMaxSize()) removeFirst(); 25 | return super.add(t); 26 | } 27 | 28 | public boolean isFull() { 29 | return size() >= getMaxSize(); 30 | } 31 | } 32 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/type/Pair.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.type; 2 | 3 | import lombok.AllArgsConstructor; 4 | import lombok.Data; 5 | 6 | @Data @AllArgsConstructor 7 | public final class Pair { 8 | 9 | private X x; 10 | private Y y; 11 | } 12 | -------------------------------------------------------------------------------- /Impl/src/main/java/ai/medusa/anticheat/util/type/RayTrace.java: -------------------------------------------------------------------------------- 1 | package ai.medusa.anticheat.util.type; 2 | 3 | import org.bukkit.entity.Player; 4 | import org.bukkit.util.Vector; 5 | 6 | public final class RayTrace { 7 | 8 | private final Vector origin; 9 | private final Vector direction; 10 | 11 | public RayTrace(final Vector origin, final Vector direction) { 12 | this.origin = origin; 13 | this.direction = direction; 14 | } 15 | 16 | public RayTrace(final Player player) { 17 | this.origin = player.getEyeLocation().toVector(); 18 | this.direction = player.getEyeLocation().getDirection(); 19 | } 20 | 21 | public double origin(int i) { 22 | switch (i) { 23 | case 0: 24 | return origin.getX(); 25 | case 1: 26 | return origin.getY(); 27 | case 2: 28 | return origin.getZ(); 29 | default: 30 | return 0; 31 | } 32 | } 33 | 34 | public double direction(int i) { 35 | switch (i) { 36 | case 0: 37 | return direction.getX(); 38 | case 1: 39 | return direction.getY(); 40 | case 2: 41 | return direction.getZ(); 42 | default: 43 | return 0; 44 | } 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /Impl/src/main/resources/plugin.yml: -------------------------------------------------------------------------------- 1 | name: Medusa 2 | version: 1.5.3 3 | main: ai.medusa.anticheat.MedusaPlugin 4 | authors: [infinitesm] 5 | description: Medusa Anticheat 6 | 7 | commands: 8 | medusa: 9 | description: Commands for Medusa Anticheat. 10 | usage: /medusa 11 | aliases: [anticheat, ac] 12 | permission: medusa.commands 13 | 14 | 15 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Medusa 2 | 3 | Automatic server moderation system for Spigot 1.8-1.12 servers. 4 | 5 | Features: 6 | - Real time behaviour anomaly detection + mitigation through proven and accurate detection methods 7 | - Lightweight, little to no performance overhead 8 | - Theme system 9 | - Multiversion support (1.8-1.12) 10 | 11 | Download here: https://www.spigotmc.org/resources/medusa.83345/ 12 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 4.0.0 6 | 7 | ai.medusa 8 | Medusa 9 | pom 10 | 1.0 11 | 12 | 13 | Impl 14 | API 15 | ExampleAPI 16 | 17 | 18 | 19 | UTF-8 20 | 21 | 22 | 23 | 24 | spigot-repo 25 | https://hub.spigotmc.org/nexus/content/repositories/snapshots/ 26 | 27 | 28 | jitpack.io 29 | https://jitpack.io 30 | 31 | 32 | funkemunky-releases 33 | https://nexus.funkemunky.cc/content/repositories/releases/ 34 | 35 | 36 | 37 | 38 | 39 | org.projectlombok 40 | lombok 41 | 1.18.10 42 | provided 43 | 44 | 45 | org.github.spigot 46 | 1.8 47 | 1.8 48 | provided 49 | 50 | 51 | org.github.spigot 52 | 1.8.3 53 | 1.8.3 54 | provided 55 | 56 | 57 | org.github.spigot 58 | 1.8.8 59 | 1.8.8 60 | provided 61 | 62 | 63 | 64 | --------------------------------------------------------------------------------