package me.libraryaddict.disguise.utilities; import com.comphenix.protocol.wrappers.MinecraftKey; import com.comphenix.protocol.wrappers.WrappedDataWatcher.Registry; import com.comphenix.protocol.wrappers.WrappedDataWatcher.Serializer; import com.comphenix.protocol.wrappers.WrappedDataWatcher.WrappedDataWatcherObject; import com.comphenix.protocol.wrappers.WrappedGameProfile; import com.google.common.collect.ImmutableMap; import com.mojang.authlib.GameProfile; import org.apache.commons.lang3.tuple.ImmutablePair; import org.apache.commons.lang3.tuple.Pair; import org.bukkit.Art; import org.bukkit.Bukkit; import org.bukkit.Location; import org.bukkit.Sound; import org.bukkit.World; import org.bukkit.entity.Entity; import org.bukkit.entity.LivingEntity; import org.bukkit.entity.Player; import org.bukkit.inventory.EntityEquipment; import org.bukkit.inventory.EquipmentSlot; import org.bukkit.inventory.ItemStack; import org.bukkit.potion.PotionEffect; import java.lang.reflect.Constructor; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.util.Map; import java.util.UUID; public class ReflectionManager { private static final String bukkitVersion = Bukkit.getServer().getClass().getName().split("\\.")[3]; private static final Class craftItemClass; private static Method damageAndIdleSoundMethod; private static final Field entitiesField; private static final Constructor boundingBoxConstructor; private static final Method setBoundingBoxMethod; private static final Method ihmGet; private static final Field pingField; private static Map, String> primitiveTypes; private static final Field trackerField; public static final Field entityCountField; /* * This portion of code is originally Copyright (C) 2014-2014 Kane York. * * In addition to the implicit license granted to libraryaddict to redistribuite the code, the * code is also licensed to the public under the BSD 2-clause license. * * The publicly licensed version may be viewed here: https://gist.github.com/riking/2f330f831c30e2276df7 */ static { primitiveTypes = ImmutableMap., String>builder().put(boolean.class, "Z").put(byte.class, "B") .put(char.class, "C").put(short.class, "S").put(int.class, "I").put(long.class, "J").put(float.class, "F") .put(double.class, "D").put(void.class, "V").build(); } static { for (Method method : getNmsClass("EntityLiving").getDeclaredMethods()) { try { if (method.getReturnType() == float.class && Modifier.isProtected(method.getModifiers()) && method.getParameterTypes().length == 0) { Object entity = createEntityInstance("Cow"); method.setAccessible(true); float value = (Float) method.invoke(entity); if (value == 0.4F) { damageAndIdleSoundMethod = method; break; } } } catch (Exception ex) { ex.printStackTrace(System.out); } } craftItemClass = getCraftClass("inventory.CraftItemStack"); pingField = getNmsField("EntityPlayer", "ping"); trackerField = getNmsField("WorldServer", "tracker"); entitiesField = getNmsField("EntityTracker", "trackedEntities"); ihmGet = getNmsMethod("IntHashMap", "get", int.class); boundingBoxConstructor = getNmsConstructor("AxisAlignedBB", double.class, double.class, double.class, double.class, double.class, double.class); setBoundingBoxMethod = getNmsMethod("Entity", "a", getNmsClass("AxisAlignedBB")); entityCountField = getNmsField("Entity", "entityCount"); entityCountField.setAccessible(true); } public static Object createEntityInstance(String entityName) { try { Class entityClass = getNmsClass("Entity" + entityName); Object entityObject; Object world = getWorldServer(Bukkit.getWorlds().get(0)); switch (entityName) { case "Player": Object minecraftServer = getNmsMethod("MinecraftServer", "getServer").invoke(null); Object playerinteractmanager = getNmsClass("PlayerInteractManager").getDeclaredConstructor(getNmsClass("World")).newInstance(world); WrappedGameProfile gameProfile = getGameProfile(null, "Steve"); entityObject = entityClass.getDeclaredConstructor(getNmsClass("MinecraftServer"), getNmsClass("WorldServer"), gameProfile.getHandleType(), playerinteractmanager.getClass()).newInstance(minecraftServer, world, gameProfile.getHandle(), playerinteractmanager); break; case "EnderPearl": entityObject = entityClass.getDeclaredConstructor(getNmsClass("World"), getNmsClass("EntityLiving")).newInstance(world, createEntityInstance("Cow")); break; default: entityObject = entityClass.getDeclaredConstructor(getNmsClass("World")).newInstance(world); break; } return entityObject; } catch (Exception e) { e.printStackTrace(System.out); } return null; } public static Object getMobEffectList(int id) { Method nmsMethod = getNmsMethod("MobEffectList", "fromId", Integer.TYPE); try { return nmsMethod.invoke(null, id); } catch (IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); return null; } } public static Object createMobEffect(PotionEffect effect) { return createMobEffect(effect.getType().getId(), effect.getDuration(), effect.getAmplifier(), effect.isAmbient(), effect.hasParticles()); } public static Object createMobEffect(int id, int duration, int amplification, boolean ambient, boolean particles) { try { return getNmsClass("MobEffect").getDeclaredConstructor(getNmsClass("MobEffectList"), Integer.TYPE, Integer.TYPE, Boolean.TYPE, Boolean.TYPE) .newInstance(getMobEffectList(id), duration, amplification, ambient, particles); } catch (Exception e) { e.printStackTrace(System.out); } return null; } private static String dir2fqn(String s) { return s.replaceAll("/", "."); } public static FakeBoundingBox getBoundingBox(Entity entity) { try { Object boundingBox = getNmsMethod("Entity", "getBoundingBox").invoke(getNmsEntity(entity)); double x = 0, y = 0, z = 0; int stage = 0; for (Field field : boundingBox.getClass().getDeclaredFields()) { if (field.getType().getSimpleName().equals("double")) { stage++; switch (stage) { case 1: x -= field.getDouble(boundingBox); break; case 2: y -= field.getDouble(boundingBox); break; case 3: z -= field.getDouble(boundingBox); break; case 4: x += field.getDouble(boundingBox); break; case 5: y += field.getDouble(boundingBox); break; case 6: z += field.getDouble(boundingBox); break; default: throw new Exception("Error while setting the bounding box, more doubles than I thought??"); } } } return new FakeBoundingBox(x, y, z); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Entity getBukkitEntity(Object nmsEntity) { try { return (Entity) getNmsMethod("Entity", "getBukkitEntity").invoke(nmsEntity); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static ItemStack getBukkitItem(Object nmsItem) { try { return (ItemStack) craftItemClass.getMethod("asBukkitCopy", getNmsClass("ItemStack")).invoke(null, nmsItem); } catch (Exception e) { e.printStackTrace(System.out); } return null; } public static String getBukkitVersion() { return bukkitVersion; } public static Class getCraftClass(String className) { try { return Class.forName("org.bukkit.craftbukkit." + getBukkitVersion() + "." + className); } catch (Exception e) { e.printStackTrace(System.out); } return null; } public static String getCraftSound(Sound sound) { try { return (String) getCraftClass("CraftSound").getMethod("getSound", Sound.class).invoke(null, sound); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Object getEntityTrackerEntry(Entity target) throws Exception { Object world = getWorldServer(target.getWorld()); Object tracker = trackerField.get(world); Object trackedEntities = entitiesField.get(tracker); return ihmGet.invoke(trackedEntities, target.getEntityId()); } public static Object getMinecraftServer() { try { return getCraftMethod("CraftServer", "getServer").invoke(Bukkit.getServer()); } catch (IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); } return null; } public static String getEnumArt(Art art) { try { Object enumArt = getCraftClass("CraftArt").getMethod("BukkitToNotch", Art.class).invoke(null, art); for (Field field : enumArt.getClass().getDeclaredFields()) { if (field.getType() == String.class) { return (String) field.get(enumArt); } } } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Object getBlockPosition(int x, int y, int z) { try { return getNmsClass("BlockPosition").getDeclaredConstructor(int.class, int.class, int.class).newInstance(x, y, z); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Enum getEnumDirection(int direction) { try { return (Enum) getNmsMethod("EnumDirection", "fromType2", int.class).invoke(null, direction); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Enum getEnumPlayerInfoAction(int action) { try { return (Enum) getNmsClass("PacketPlayOutPlayerInfo$EnumPlayerInfoAction").getEnumConstants()[action]; } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Object getPlayerInfoData(Object playerInfoPacket, WrappedGameProfile gameProfile) { try { Object playerListName = getNmsClass("ChatComponentText").getDeclaredConstructor(String.class) .newInstance(gameProfile.getName()); return getNmsClass("PacketPlayOutPlayerInfo$PlayerInfoData").getDeclaredConstructor(getNmsClass("PacketPlayOutPlayerInfo"), gameProfile.getHandleType(), int.class, getNmsClass("WorldSettings$EnumGamemode"), getNmsClass("IChatBaseComponent")) .newInstance(playerInfoPacket, gameProfile.getHandle(), 0, getNmsClass("WorldSettings$EnumGamemode").getEnumConstants()[1], playerListName); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static WrappedGameProfile getGameProfile(Player player) { return WrappedGameProfile.fromPlayer(player); } public static WrappedGameProfile getGameProfile(UUID uuid, String playerName) { try { return new WrappedGameProfile(uuid != null ? uuid : UUID.randomUUID(), playerName); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static WrappedGameProfile getGameProfileWithThisSkin(UUID uuid, String playerName, WrappedGameProfile profileWithSkin) { try { WrappedGameProfile gameProfile = new WrappedGameProfile(uuid != null ? uuid : UUID.randomUUID(), playerName); gameProfile.getProperties().putAll(profileWithSkin.getProperties()); return gameProfile; } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Class getNmsClass(String className) { try { return Class.forName("net.minecraft.server." + getBukkitVersion() + "." + className); } catch (Exception e) { e.printStackTrace(System.out); } return null; } public static Constructor getNmsConstructor(Class clazz, Class... parameters) { try { Constructor declaredConstructor = clazz.getDeclaredConstructor(parameters); declaredConstructor.setAccessible(true); return declaredConstructor; } catch (NoSuchMethodException e) { e.printStackTrace(System.out); } return null; } public static Constructor getNmsConstructor(String className, Class... parameters) { return getNmsConstructor(getNmsClass(className), parameters); } public static Object getNmsEntity(Entity entity) { try { return getCraftClass("entity.CraftEntity").getMethod("getHandle").invoke(entity); } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Field getNmsField(Class clazz, String fieldName) { try { Field declaredField = clazz.getDeclaredField(fieldName); declaredField.setAccessible(true); return declaredField; } catch (NoSuchFieldException e) { e.printStackTrace(System.out); } return null; } public static Field getNmsField(String className, String fieldName) { return getNmsField(getNmsClass(className), fieldName); } public static Object getNmsItem(ItemStack itemstack) { try { return craftItemClass.getDeclaredMethod("asNMSCopy", ItemStack.class).invoke(null, itemstack); } catch (Exception e) { e.printStackTrace(System.out); } return null; } public static Method getCraftMethod(String className, String methodName, Class... parameters) { return getCraftMethod(getCraftClass(className), methodName, parameters); } public static Method getCraftMethod(Class clazz, String methodName, Class... parameters) { try { Method declaredMethod = clazz.getDeclaredMethod(methodName, parameters); declaredMethod.setAccessible(true); return declaredMethod; } catch (NoSuchMethodException e) { e.printStackTrace(System.out); } return null; } public static Method getNmsMethod(Class clazz, String methodName, Class... parameters) { try { Method declaredMethod = clazz.getDeclaredMethod(methodName, parameters); declaredMethod.setAccessible(true); return declaredMethod; } catch (NoSuchMethodException e) { e.printStackTrace(System.out); } return null; } public static Method getNmsMethod(String className, String methodName, Class... parameters) { return getNmsMethod(getNmsClass(className), methodName, parameters); } public static double getPing(Player player) { try { return (double) pingField.getInt(ReflectionManager.getNmsEntity(player)); } catch (Exception ex) { ex.printStackTrace(System.out); } return 0D; } public static float[] getSize(Entity entity) { try { float length = getNmsField("Entity", "length").getFloat(getNmsEntity(entity)); float width = getNmsField("Entity", "width").getFloat(getNmsEntity(entity)); float height = (Float) getNmsMethod("Entity", "getHeadHeight").invoke(getNmsEntity(entity)); return new float[]{length, width, height}; } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static WrappedGameProfile getSkullBlob(WrappedGameProfile gameProfile) { try { Object minecraftServer = getNmsMethod("MinecraftServer", "getServer").invoke(null); for (Method method : getNmsClass("MinecraftServer").getDeclaredMethods()) { if (method.getReturnType().getSimpleName().equals("MinecraftSessionService")) { Object session = method.invoke(minecraftServer); return WrappedGameProfile.fromHandle(session.getClass() .getDeclaredMethod("fillProfileProperties", gameProfile.getHandleType(), boolean.class) .invoke(session, gameProfile.getHandle(), true)); } } } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } public static Float getSoundModifier(Object entity) { try { damageAndIdleSoundMethod.setAccessible(true); return (Float) damageAndIdleSoundMethod.invoke(entity); } catch (Exception ignored) { } return null; } public static WrappedGameProfile grabProfileAddUUID(String playername) { try { Object minecraftServer = getNmsMethod("MinecraftServer", "getServer").invoke(null); for (Method method : getNmsClass("MinecraftServer").getDeclaredMethods()) { if (method.getReturnType().getSimpleName().equals("GameProfileRepository")) { Object profileRepo = method.invoke(minecraftServer); Object agent = Class.forName("com.mojang.authlib.Agent").getDeclaredField("MINECRAFT").get(null); LibsProfileLookupCaller callback = new LibsProfileLookupCaller(); profileRepo .getClass() .getDeclaredMethod("findProfilesByNames", String[].class, agent.getClass(), Class.forName("com.mojang.authlib.ProfileLookupCallback")) .invoke(profileRepo, new String[]{playername}, agent, callback); if (callback.getGameProfile() != null) { return callback.getGameProfile(); } return getGameProfile(null, playername); } } } catch (Exception ex) { ex.printStackTrace(System.out); } return null; } private static String methodSignaturePart(Class param) { if (param.isArray()) { return "[" + methodSignaturePart(param.getComponentType()); } else if (param.isPrimitive()) { return primitiveTypes.get(param); } else { return "L" + param.getName().replaceAll("\\.", "/") + ";"; } } public static void removePlayer(Player player) { //Some future remove code if needed } public static void setAllowSleep(Player player) { try { //TODO: Fix this! /** * Object nmsEntity = getNmsEntity(player); Object connection = getNmsField(nmsEntity.getClass(), "playerConnection").get(nmsEntity); Field check = getNmsField(connection.getClass(), "checkMovement"); check.setBoolean(connection, true); * */ } catch (Exception ex) { ex.printStackTrace(System.out); } } public static void setBoundingBox(Entity entity, FakeBoundingBox newBox) { try { Location loc = entity.getLocation(); Object boundingBox = boundingBoxConstructor.newInstance(loc.getX() - newBox.getX(), loc.getY() - newBox.getY(), loc.getZ() - newBox.getZ(), loc.getX() + newBox.getX(), loc.getY() + newBox.getY(), loc.getZ() + newBox.getZ()); setBoundingBoxMethod.invoke(getNmsEntity(entity), boundingBox); } catch (Exception ex) { ex.printStackTrace(System.out); } } public static Enum getSoundCategory(String category) { Method method = getNmsMethod("SoundCategory", "a", String.class); try { Enum invoke = (Enum) method.invoke(null, category.toLowerCase()); if (invoke == null) { Class clazz = getNmsClass("SoundCategory"); Enum[] enums = clazz != null ? (Enum[]) clazz.getEnumConstants() : null; for (Enum anEnum : enums != null ? enums : new Enum[0]) { if (anEnum.name().equals("MASTER")) return anEnum; } } return null; } catch (Exception e) { e.printStackTrace(); return null; } } /** * Creates the NMS object EnumItemSlot from an EquipmentSlot. * * @param slot * @return null if the equipment slot is null */ public static Enum createEnumItemSlot(EquipmentSlot slot) { Class clazz = getNmsClass("EnumItemSlot"); Object[] enums = clazz != null ? clazz.getEnumConstants() : null; if (enums == null) return null; switch (slot) { case HAND: return (Enum) enums[0]; case OFF_HAND: return (Enum) enums[1]; case FEET: return (Enum) enums[2]; case LEGS: return (Enum) enums[3]; case CHEST: return (Enum) enums[4]; case HEAD: return (Enum) enums[5]; default: return null; } } /** * Creates the Bukkit object EquipmentSlot from an EnumItemSlot object. * * @return null if the object isn't an nms EnumItemSlot */ public static EquipmentSlot createEquipmentSlot(Object enumItemSlot) { try { Enum nmsSlot = (Enum) enumItemSlot; switch (nmsSlot.name()) { case "MAINHAND": return EquipmentSlot.HAND; case "OFFHAND": return EquipmentSlot.OFF_HAND; case "FEET": return EquipmentSlot.FEET; case "LEGS": return EquipmentSlot.LEGS; case "CHEST": return EquipmentSlot.CHEST; case "HEAD": return EquipmentSlot.HAND; } } catch (Exception e) { return null; } return null; } /** * Gets equipment from this entity based on the slot given. * * @param slot * @return null if the disguisedEntity is not an instance of a living entity */ public static ItemStack getEquipment(EquipmentSlot slot, Entity disguisedEntity) { if (!(disguisedEntity instanceof LivingEntity)) return null; switch (slot) { case HAND: return ((LivingEntity) disguisedEntity).getEquipment().getItemInMainHand(); case OFF_HAND: return ((LivingEntity) disguisedEntity).getEquipment().getItemInOffHand(); case FEET: return ((LivingEntity) disguisedEntity).getEquipment().getBoots(); case LEGS: return ((LivingEntity) disguisedEntity).getEquipment().getLeggings(); case CHEST: return ((LivingEntity) disguisedEntity).getEquipment().getChestplate(); case HEAD: return ((LivingEntity) disguisedEntity).getEquipment().getHelmet(); default: return null; } } /** * Necessary for 1.9 * * @return */ public static String convertSoundEffectToString(Object soundEffect) { try { Field f_getMinecraftKey = getNmsField("SoundEffect", "b"); f_getMinecraftKey.setAccessible(true); MinecraftKey key = MinecraftKey.fromHandle(f_getMinecraftKey.get(soundEffect)); return key.getKey(); } catch (IllegalAccessException e) { e.printStackTrace(); } return null; } public static Object getCraftSoundEffect(String sound) { try { return getCraftMethod("CraftSound", "getSoundEffect", String.class).invoke(null, sound); } catch (IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); } return null; } /** * This creates a DataWatcherItem usable with WrappedWatchableObject * * @param id * @param value * @return */ public static Object createDataWatcherItem(int id, Object value) { if (value == null) return null; Serializer serializer = Registry.get(value.getClass()); WrappedDataWatcherObject watcherObject = new WrappedDataWatcherObject(id, serializer); Constructor construct = getNmsConstructor("DataWatcher$Item", getNmsClass("DataWatcherObject"), Object.class); try { return construct.newInstance(watcherObject.getHandle(), value); } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); } return null; } public static EntityEquipment createEntityEquipment(Entity entity) { if (!(entity instanceof LivingEntity)) return null; Constructor construct = getNmsConstructor("CraftEntityEquipment", getNmsClass("CraftLivingEntity")); try { return (EntityEquipment) construct.newInstance((LivingEntity) entity); } catch (InstantiationException | IllegalAccessException | InvocationTargetException | ClassCastException e) { e.printStackTrace(); } return null; } public static int getCombinedId(int id, int data) { return id + (data << 12); } public static Pair getFromCombinedId(int combinedId) { int j = combinedId & 4095; int k = combinedId >> 12 & 15; return new ImmutablePair<>(j, k); } public static Object getWorldServer(World w) { try { return getCraftMethod("CraftWorld", "getHandle").invoke(w); } catch (IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); } return null; } public static Object getPlayerInteractManager(World w) { Object worldServer = getWorldServer(w); try { return getNmsConstructor("PlayerInteractManager", getNmsClass("World")).newInstance(worldServer); } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) { e.printStackTrace(); } return null; } public static Object createEntityPlayer(World w, WrappedGameProfile profile) { Object entityPlayer = null; try { entityPlayer = getNmsConstructor("EntityPlayer", getNmsClass("MinecraftServer"), getNmsClass("WorldServer"), GameProfile.class, getNmsClass("PlayerInteractManager")) .newInstance(getMinecraftServer(), getWorldServer(w), profile.getHandle(), getPlayerInteractManager(w)); } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) { e.printStackTrace(); } return entityPlayer; } }