Merge pull request #754 from mmxw11/master

Improve inventory handling for Bukkit servers

bukkit/src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -174,6 +174,11 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaPlatform {
         }
     }
 
+    @Override
+    public TaskId runSync(Runnable runnable, Long ticks) {
+        return new BukkitTaskId(getServer().getScheduler().runTaskLater(this, runnable, ticks).getTaskId());
+    }
+
     @Override
     public TaskId runRepeatingSync(Runnable runnable, Long ticks) {
         return new BukkitTaskId(getServer().getScheduler().runTaskTimer(this, runnable, ticks, 0).getTaskId());

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitConfigAPI.java

@@ -164,6 +164,11 @@ public class BukkitConfigAPI extends Config implements ViaVersionConfig {
     public boolean is1_12NBTArrayFix() {
         return getBoolean("chat-nbt-fix", true);
     }
+    
+    @Override
+    public boolean is1_12QuickMoveActionFix() {
+        return getBoolean("quick-move-action-fix", true);
+    }
 
     @Override
     public List<Integer> getBlockedProtocols() {

bukkit/src/main/java/us/myles/ViaVersion/bukkit/platform/BukkitViaLoader.java

@@ -1,10 +1,12 @@
 package us.myles.ViaVersion.bukkit.platform;
 
 import lombok.AllArgsConstructor;
+
 import org.bukkit.Bukkit;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerQuitEvent;
+
 import us.myles.ViaVersion.ViaVersionPlugin;
 import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.data.UserConnection;
@@ -12,9 +14,11 @@ import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.platform.ViaPlatformLoader;
 import us.myles.ViaVersion.bukkit.listeners.UpdateListener;
 import us.myles.ViaVersion.bukkit.listeners.protocol1_9to1_8.*;
+import us.myles.ViaVersion.bukkit.providers.BukkitInventoryQuickMoveProvider;
 import us.myles.ViaVersion.bukkit.providers.BukkitViaBulkChunkTranslator;
 import us.myles.ViaVersion.bukkit.providers.BukkitViaMovementTransmitter;
 import us.myles.ViaVersion.protocols.base.ProtocolInfo;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.providers.InventoryQuickMoveProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.BulkChunkTranslatorProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.HandItemProvider;
 import us.myles.ViaVersion.protocols.protocol1_9to1_8.providers.MovementTransmitterProvider;
@@ -60,6 +64,9 @@ public class BukkitViaLoader implements ViaPlatformLoader {
         /* Providers */
         Via.getManager().getProviders().use(BulkChunkTranslatorProvider.class, new BukkitViaBulkChunkTranslator());
         Via.getManager().getProviders().use(MovementTransmitterProvider.class, new BukkitViaMovementTransmitter());
+        if (plugin.getConf().is1_12QuickMoveActionFix()) {
+            Via.getManager().getProviders().use(InventoryQuickMoveProvider.class, new BukkitInventoryQuickMoveProvider());
+        }
         Via.getManager().getProviders().use(HandItemProvider.class, new HandItemProvider() {
             @Override
             public Item getHandItem(final UserConnection info) {

bukkit/src/main/java/us/myles/ViaVersion/bukkit/providers/BukkitInventoryQuickMoveProvider.java

@@ -0,0 +1,162 @@
+package us.myles.ViaVersion.bukkit.providers;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.InventoryView;
+import org.bukkit.inventory.ItemStack;
+import us.myles.ViaVersion.api.Via;
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.protocol.ProtocolRegistry;
+import us.myles.ViaVersion.api.protocol.ProtocolVersion;
+import us.myles.ViaVersion.bukkit.tasks.protocol1_12to1_11_1.BukkitInventoryUpdateTask;
+import us.myles.ViaVersion.bukkit.util.NMSUtil;
+import us.myles.ViaVersion.protocols.base.ProtocolInfo;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.providers.InventoryQuickMoveProvider;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.storage.ItemTransaction;
+import us.myles.ViaVersion.util.ReflectionUtil;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class BukkitInventoryQuickMoveProvider extends InventoryQuickMoveProvider {
+
+    private static Map<UUID, BukkitInventoryUpdateTask> updateTasks = new ConcurrentHashMap<UUID, BukkitInventoryUpdateTask>();
+    private boolean supported;
+    // packet class
+    private Class<?> windowClickPacketClass;
+    private Object clickTypeEnum;
+    // Use for nms
+    private Method nmsItemMethod;
+    private Method craftPlayerHandle;
+    private Field connection;
+    private Method packetMethod;
+
+    public BukkitInventoryQuickMoveProvider() {
+        this.supported = isSupported();
+        setupReflection();
+    }
+
+    @Override
+    public boolean registerQuickMove(short windowId, short slotId, short actionId, UserConnection userConnection) {
+        if (!supported) {
+            return false;
+        }
+        ProtocolInfo info = userConnection.get(ProtocolInfo.class);
+        UUID uuid = info.getUuid();
+        BukkitInventoryUpdateTask updateTask = updateTasks.get(uuid);
+        final boolean registered = updateTask != null;
+        if (!registered) {
+            updateTask = new BukkitInventoryUpdateTask(this, uuid);
+            updateTasks.put(uuid, updateTask);
+        }
+        // http://wiki.vg/index.php?title=Protocol&oldid=13223#Click_Window
+        updateTask.addItem(windowId, slotId, actionId);
+        if (!registered) {
+            Via.getPlatform().runSync(updateTask, 5L);
+        }
+        return true;
+    }
+
+    public Object buildWindowClickPacket(Player p, ItemTransaction storage) {
+        if (!supported) {
+            return null;
+        }
+        InventoryView inv = p.getOpenInventory();
+        short slotId = storage.getSlotId();
+        if (slotId < 0) { // clicked out of inv slot
+            return null;
+        }
+        if (slotId > inv.countSlots()) {
+            return null; // wrong container open?
+        }
+        ItemStack itemstack = inv.getItem(slotId);
+        if (itemstack == null) {
+            return null;
+        }
+        Object packet = null;
+        try {
+            packet = windowClickPacketClass.newInstance();
+            Object nmsItem = nmsItemMethod.invoke(null, itemstack);
+            ReflectionUtil.set(packet, "a", (int) storage.getWindowId());
+            ReflectionUtil.set(packet, "slot", (int) slotId);
+            ReflectionUtil.set(packet, "button", 0); // shift + left mouse click
+            ReflectionUtil.set(packet, "d", storage.getActionId());
+            ReflectionUtil.set(packet, "item", nmsItem);
+            int protocolId = ProtocolRegistry.SERVER_PROTOCOL;
+            if (protocolId == ProtocolVersion.v1_8.getId()) {
+                ReflectionUtil.set(packet, "shift", 1);
+            } else if (protocolId >= ProtocolVersion.v1_9.getId()) { // 1.9+
+                ReflectionUtil.set(packet, "shift", clickTypeEnum);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return packet;
+    }
+
+    public boolean sendPlayer(Player p, Object packet) {
+        if (packet == null) {
+            return false;
+        }
+        try {
+            Object entityPlayer = craftPlayerHandle.invoke(p);
+            Object playerConnection = connection.get(entityPlayer);
+            // send
+            packetMethod.invoke(playerConnection, packet);
+        } catch (IllegalAccessException | InvocationTargetException e) {
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
+
+    public void onTaskExecuted(UUID uuid) {
+        updateTasks.remove(uuid);
+    }
+
+    private void setupReflection() {
+        if (!supported) {
+            return;
+        }
+        try {
+            this.windowClickPacketClass = NMSUtil.nms("PacketPlayInWindowClick");
+            int protocolId = ProtocolRegistry.SERVER_PROTOCOL;
+            if (protocolId >= ProtocolVersion.v1_9.getId()) {
+                Class<?> eclassz = NMSUtil.nms("InventoryClickType");
+                Object[] constants = eclassz.getEnumConstants();
+                this.clickTypeEnum = constants[1]; // QUICK_MOVE
+            }
+            Class<?> craftItemStack = NMSUtil.obc("inventory.CraftItemStack");
+            this.nmsItemMethod = craftItemStack.getDeclaredMethod("asNMSCopy", ItemStack.class);
+        } catch (Exception e) {
+            throw new RuntimeException("Couldn't find required inventory classes", e);
+        }
+        try {
+            this.craftPlayerHandle = NMSUtil.obc("entity.CraftPlayer").getDeclaredMethod("getHandle");
+        } catch (NoSuchMethodException | ClassNotFoundException e) {
+            throw new RuntimeException("Couldn't find CraftPlayer", e);
+        }
+        try {
+            this.connection = NMSUtil.nms("EntityPlayer").getDeclaredField("playerConnection");
+        } catch (NoSuchFieldException | ClassNotFoundException e) {
+            throw new RuntimeException("Couldn't find Player Connection", e);
+        }
+        try {
+            this.packetMethod = NMSUtil.nms("PlayerConnection").getDeclaredMethod("a", windowClickPacketClass);
+        } catch (NoSuchMethodException | ClassNotFoundException e) {
+            throw new RuntimeException("Couldn't find CraftPlayer", e);
+        }
+    }
+
+    private boolean isSupported() {
+        int protocolId = ProtocolRegistry.SERVER_PROTOCOL;
+        if (protocolId >= ProtocolVersion.v1_8.getId() && protocolId <= ProtocolVersion.v1_11_1.getId()) {
+            return true; // 1.8-1.11.2
+        }
+        // this is not needed on 1.12+ servers
+        return false;
+    }
+}

bukkit/src/main/java/us/myles/ViaVersion/bukkit/tasks/protocol1_12to1_11_1/BukkitInventoryUpdateTask.java

@@ -0,0 +1,53 @@
+package us.myles.ViaVersion.bukkit.tasks.protocol1_12to1_11_1;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.UUID;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+import us.myles.ViaVersion.bukkit.providers.BukkitInventoryQuickMoveProvider;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.storage.ItemTransaction;
+
+public class BukkitInventoryUpdateTask implements Runnable {
+
+    private BukkitInventoryQuickMoveProvider provider;
+    private final UUID uuid;
+    private final List<ItemTransaction> items;
+
+    public BukkitInventoryUpdateTask(BukkitInventoryQuickMoveProvider provider, UUID uuid) {
+        this.provider = provider;
+        this.uuid = uuid;
+        this.items = Collections.synchronizedList(new ArrayList<ItemTransaction>());
+    }
+
+    public void addItem(short windowId, short slotId, short actionId) {
+        ItemTransaction storage = new ItemTransaction(windowId, slotId, actionId);
+        items.add(storage);
+    }
+
+    @Override
+    public void run() {
+        Player p = Bukkit.getServer().getPlayer(uuid);
+        if (p == null) {
+            provider.onTaskExecuted(uuid);
+            return;
+        }
+        try {
+            synchronized (items) {
+                for (ItemTransaction storage : items) {
+                    Object packet = provider.buildWindowClickPacket(p, storage);
+                    boolean result = provider.sendPlayer(p, packet);
+                    if (!result) {
+                        break;
+                    }
+                }
+                items.clear();
+            }
+        } finally {
+            provider.onTaskExecuted(uuid);
+        }
+    }
+}

bungee/src/main/java/us/myles/ViaVersion/BungeePlugin.java

@@ -79,6 +79,11 @@ public class BungeePlugin extends Plugin implements ViaPlatform, Listener {
         return runAsync(runnable);
     }
 
+    @Override
+    public TaskId runSync(Runnable runnable, Long ticks) {
+        return new BungeeTaskId(getProxy().getScheduler().schedule(this, runnable, ticks * 50, TimeUnit.MILLISECONDS).getId());
+    }
+
     @Override
     public TaskId runRepeatingSync(Runnable runnable, Long ticks) {
         return new BungeeTaskId(getProxy().getScheduler().schedule(this, runnable, 0, ticks * 50, TimeUnit.MILLISECONDS).getId());

bungee/src/main/java/us/myles/ViaVersion/bungee/platform/BungeeConfigAPI.java

@@ -10,7 +10,7 @@ import java.net.URL;
 import java.util.*;
 
 public class BungeeConfigAPI extends Config implements ViaVersionConfig {
-    private static List<String> UNSUPPORTED = Arrays.asList("nms-player-ticking", "item-cache", "anti-xray-patch");
+    private static List<String> UNSUPPORTED = Arrays.asList("nms-player-ticking", "item-cache", "anti-xray-patch", "quick-move-action-fix");
 
     public BungeeConfigAPI(File configFile) {
         super(new File(configFile, "config.yml"));
@@ -203,6 +203,11 @@ public class BungeeConfigAPI extends Config implements ViaVersionConfig {
     public boolean is1_12NBTArrayFix() {
         return getBoolean("chat-nbt-fix", true);
     }
+    
+    @Override
+    public boolean is1_12QuickMoveActionFix() {
+        return false;
+    }
 
     @Override
     public List<Integer> getBlockedProtocols() {

common/src/main/java/us/myles/ViaVersion/api/PacketWrapper.java

@@ -149,10 +149,11 @@ public class PacketWrapper {
             }
         } else {
             Pair<Type, Object> read = readableObjects.poll();
-            if (read.getKey().equals(type) || (type.getBaseClass().equals(read.getKey().getBaseClass()) && type.getOutputClass().equals(read.getKey().getOutputClass()))) {
+            Type rtype = read.getKey();
+            if (rtype.equals(type) || (type.getBaseClass().equals(rtype.getBaseClass()) && type.getOutputClass().equals(rtype.getOutputClass()))) {
                 return (T) read.getValue();
             } else {
-                if (type == Type.NOTHING) {
+                if (rtype == Type.NOTHING) {
                     return read(type); // retry
                 } else {
                     Exception e = new IOException("Unable to read type " + type.getTypeName() + ", found " + read.getKey().getTypeName());

common/src/main/java/us/myles/ViaVersion/api/ViaVersionConfig.java

@@ -209,7 +209,14 @@ public interface ViaVersionConfig {
      * @return True if enabled
      */
     boolean is1_12NBTArrayFix();
-
+    
+    /**
+     * Should we fix shift quick move action for 1.12 clients
+     *
+     * @return True if enabled
+     */
+    boolean is1_12QuickMoveActionFix();
+    
     /**
      * Get the blocked protocols
      *

common/src/main/java/us/myles/ViaVersion/api/platform/ViaPlatform.java

@@ -59,6 +59,16 @@ public interface ViaPlatform<T> {
      */
     TaskId runSync(Runnable runnable);
 
+    /**
+     * Run a task Sync after a interval
+     * This must be only used after plugin enable.
+     *
+     * @param runnable The task to run
+     * @param ticks    The interval to run it after
+     * @return The Task ID
+     */
+    TaskId runSync(Runnable runnable, Long ticks);
+
     /**
      * Run a task at a repeating interval.
      * Initial interval is the same as repeat.

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/Protocol1_12To1_11_1.java

@@ -12,6 +12,7 @@ import us.myles.ViaVersion.api.data.UserConnection;
 import us.myles.ViaVersion.api.entities.Entity1_12Types;
 import us.myles.ViaVersion.api.minecraft.chunks.Chunk;
 import us.myles.ViaVersion.api.minecraft.chunks.ChunkSection;
+import us.myles.ViaVersion.api.platform.providers.ViaProviders;
 import us.myles.ViaVersion.api.protocol.Protocol;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
@@ -19,6 +20,7 @@ import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.api.type.types.version.Types1_12;
 import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.packets.InventoryPackets;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.providers.InventoryQuickMoveProvider;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.storage.EntityTracker;
 import us.myles.ViaVersion.protocols.protocol1_9_1_2to1_9_3_4.types.Chunk1_9_3_4Type;
 import us.myles.ViaVersion.protocols.protocol1_9_3to1_9_1_2.storage.ClientWorld;
@@ -384,6 +386,11 @@ public class Protocol1_12To1_11_1 extends Protocol {
             newId += 3;
         return newId;
     }
+    
+    @Override
+    protected void register(ViaProviders providers) {
+        providers.register(InventoryQuickMoveProvider.class, new InventoryQuickMoveProvider());
+    }
 
     @Override
     public void init(UserConnection userConnection) {

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/packets/InventoryPackets.java

@@ -1,6 +1,7 @@
 package us.myles.ViaVersion.protocols.protocol1_12to1_11_1.packets;
 
 import us.myles.ViaVersion.api.PacketWrapper;
+import us.myles.ViaVersion.api.Via;
 import us.myles.ViaVersion.api.minecraft.item.Item;
 import us.myles.ViaVersion.api.remapper.PacketHandler;
 import us.myles.ViaVersion.api.remapper.PacketRemapper;
@@ -8,6 +9,7 @@ import us.myles.ViaVersion.api.type.Type;
 import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.BedRewriter;
 import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.Protocol1_12To1_11_1;
+import us.myles.ViaVersion.protocols.protocol1_12to1_11_1.providers.InventoryQuickMoveProvider;
 
 public class InventoryPackets {
     public static void register(Protocol1_12To1_11_1 protocol) {
@@ -119,7 +121,26 @@ public class InventoryPackets {
                             @Override
                             public void handle(PacketWrapper wrapper) throws Exception {
                                 Item item = wrapper.get(Type.ITEM, 0);
-                                BedRewriter.toServerItem(item);
+                                if (!Via.getConfig().is1_12QuickMoveActionFix()) {
+                                    BedRewriter.toServerItem(item);
+                                    return;
+                                }
+                                byte button = wrapper.get(Type.BYTE, 0);
+                                int mode = wrapper.get(Type.VAR_INT, 0);
+                                // QUICK_MOVE PATCH (Shift + (click/double click))
+                                if (mode == 1 && button == 0 && item == null) {
+                                    short windowId = wrapper.get(Type.UNSIGNED_BYTE, 0);
+                                    short slotId = wrapper.get(Type.SHORT, 0);
+                                    short actionId = wrapper.get(Type.SHORT, 1);
+                                    InventoryQuickMoveProvider provider = Via.getManager().getProviders().get(InventoryQuickMoveProvider.class);
+                                    boolean succeed = provider.registerQuickMove(windowId, slotId, actionId, wrapper.user());
+                                    if (succeed) {
+                                        wrapper.cancel();
+                                    }
+                                    // otherwise just pass through so the server sends the PacketPlayOutTransaction packet.
+                                } else {
+                                    BedRewriter.toServerItem(item);
+                                }
                             }
                         });
                     }

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/providers/InventoryQuickMoveProvider.java

@@ -0,0 +1,11 @@
+package us.myles.ViaVersion.protocols.protocol1_12to1_11_1.providers;
+
+import us.myles.ViaVersion.api.data.UserConnection;
+import us.myles.ViaVersion.api.platform.providers.Provider;
+
+public class InventoryQuickMoveProvider implements Provider {
+
+    public boolean registerQuickMove(short windowId, short slotId, short actionId, UserConnection userConnection) {
+        return false; // not supported :/ plays very sad violin
+    }
+}

common/src/main/java/us/myles/ViaVersion/protocols/protocol1_12to1_11_1/storage/ItemTransaction.java

@@ -0,0 +1,14 @@
+package us.myles.ViaVersion.protocols.protocol1_12to1_11_1.storage;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.ToString;
+
+@AllArgsConstructor
+@ToString
+@Getter
+public class ItemTransaction {
+    private short windowId;
+    private short slotId;
+    private short actionId;
+}

common/src/main/resources/assets/viaversion/config.yml

@@ -84,6 +84,8 @@ hologram-y: -0.96
 piston-animation-patch: false
 # Should we fix nbt for 1.12 and above clients in chat messages (causes invalid item)
 chat-nbt-fix: true
+# Should we fix shift quick move action for 1.12 clients (causes shift + double click not to work when moving items) (only works on 1.8-1.11.2 bukkit based servers)
+quick-move-action-fix: true
 #
 #----------------------------------------------------------#
 #         1.9 & 1.10 CLIENTS ON 1.8 SERVERS OPTIONS        #

sponge/src/main/java/us/myles/ViaVersion/SpongePlugin.java

@@ -3,7 +3,6 @@ package us.myles.ViaVersion;
 import com.google.gson.JsonObject;
 import com.google.inject.Inject;
 import org.spongepowered.api.Game;
-import org.spongepowered.api.Sponge;
 import org.spongepowered.api.config.DefaultConfig;
 import org.spongepowered.api.entity.living.player.Player;
 import org.spongepowered.api.event.Listener;
@@ -113,6 +112,12 @@ public class SpongePlugin implements ViaPlatform {
         return new SpongeTaskId(null);
     }
 
+    @Override
+    public TaskId runSync(Runnable runnable, Long ticks) {
+        Long delay = ticks * 50L;
+        return new SpongeTaskId(syncExecutor.schedule(runnable, delay, TimeUnit.MILLISECONDS).getTask());
+    }
+
     @Override
     public TaskId runRepeatingSync(Runnable runnable, Long ticks) {
         Long time = ticks * 50L;

sponge/src/main/java/us/myles/ViaVersion/sponge/platform/SpongeConfigAPI.java

@@ -13,7 +13,7 @@ import java.util.Map;
 import java.util.Optional;
 
 public class SpongeConfigAPI extends Config implements ViaVersionConfig {
-    private static List<String> UNSUPPORTED = Arrays.asList("anti-xray-patch", "bungee-ping-interval", "bungee-ping-save", "bungee-servers");
+    private static List<String> UNSUPPORTED = Arrays.asList("anti-xray-patch", "bungee-ping-interval", "bungee-ping-save", "bungee-servers", "quick-move-action-fix");
     private final PluginContainer pluginContainer;
 
     public SpongeConfigAPI(PluginContainer pluginContainer, File configFile) {
@@ -185,6 +185,11 @@ public class SpongeConfigAPI extends Config implements ViaVersionConfig {
     public boolean is1_12NBTArrayFix() {
         return getBoolean("chat-nbt-fix", true);
     }
+    
+    @Override
+    public boolean is1_12QuickMoveActionFix() {
+        return false;
+    }
 
     @Override
     public List<Integer> getBlockedProtocols() {