--- a/net/minecraft/server/PlayerConnection.java +++ b/net/minecraft/server/PlayerConnection.java @@ -15,6 +15,49 @@ import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; +// CraftBukkit start +import java.util.HashSet; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; +import org.bukkit.Location; +import org.bukkit.craftbukkit.entity.CraftPlayer; +import org.bukkit.craftbukkit.event.CraftEventFactory; +import org.bukkit.craftbukkit.inventory.CraftInventoryView; +import org.bukkit.craftbukkit.inventory.CraftItemStack; +import org.bukkit.craftbukkit.util.CraftChatMessage; +import org.bukkit.craftbukkit.util.LazyPlayerSet; +import org.bukkit.craftbukkit.util.Waitable; +import org.bukkit.entity.Player; +import org.bukkit.event.Event; +import org.bukkit.event.block.Action; +import org.bukkit.event.block.SignChangeEvent; +import org.bukkit.event.inventory.ClickType; +import org.bukkit.event.inventory.CraftItemEvent; +import org.bukkit.event.inventory.InventoryAction; +import org.bukkit.event.inventory.InventoryClickEvent; +import org.bukkit.event.inventory.InventoryCreativeEvent; +import org.bukkit.event.inventory.InventoryType.SlotType; +import org.bukkit.event.player.AsyncPlayerChatEvent; +import org.bukkit.event.player.PlayerAnimationEvent; +import org.bukkit.event.player.PlayerChatEvent; +import org.bukkit.event.player.PlayerCommandPreprocessEvent; +import org.bukkit.event.player.PlayerInteractAtEntityEvent; +import org.bukkit.event.player.PlayerInteractEntityEvent; +import org.bukkit.event.player.PlayerItemHeldEvent; +import org.bukkit.event.player.PlayerKickEvent; +import org.bukkit.event.player.PlayerMoveEvent; +import org.bukkit.event.player.PlayerResourcePackStatusEvent; +import org.bukkit.event.player.PlayerSwapHandItemsEvent; +import org.bukkit.event.player.PlayerTeleportEvent; +import org.bukkit.event.player.PlayerToggleFlightEvent; +import org.bukkit.event.player.PlayerToggleSneakEvent; +import org.bukkit.event.player.PlayerToggleSprintEvent; +import org.bukkit.inventory.CraftingInventory; +import org.bukkit.inventory.EquipmentSlot; +import org.bukkit.inventory.InventoryView; +import org.bukkit.util.NumberConversions; +// CraftBukkit end + public class PlayerConnection implements PacketListenerPlayIn, ITickable { private static final Logger LOGGER = LogManager.getLogger(); @@ -25,7 +68,10 @@ private long f; private boolean g; private long h; - private int chatThrottle; + // CraftBukkit start - multithreaded fields + private volatile int chatThrottle; + private static final AtomicIntegerFieldUpdater chatSpamField = AtomicIntegerFieldUpdater.newUpdater(PlayerConnection.class, "chatThrottle"); + // CraftBukkit end private int j; private final IntHashMap k = new IntHashMap(); private double l; @@ -58,7 +104,34 @@ networkmanager.setPacketListener(this); this.player = entityplayer; entityplayer.playerConnection = this; + + // CraftBukkit start - add fields and methods + this.server = minecraftserver.server; + } + + private final org.bukkit.craftbukkit.CraftServer server; + private boolean processedDisconnect; + private int lastTick = MinecraftServer.currentTick; + private int allowedPlayerTicks = 1; + private int lastDropTick = MinecraftServer.currentTick; + private int lastBookTick = MinecraftServer.currentTick; + private int dropCount = 0; + private static final int SURVIVAL_PLACE_DISTANCE_SQUARED = 6 * 6; + private static final int CREATIVE_PLACE_DISTANCE_SQUARED = 7 * 7; + + // Get position of last block hit for BlockDamageLevel.STOPPED + private double lastPosX = Double.MAX_VALUE; + private double lastPosY = Double.MAX_VALUE; + private double lastPosZ = Double.MAX_VALUE; + private float lastPitch = Float.MAX_VALUE; + private float lastYaw = Float.MAX_VALUE; + private boolean justTeleported = false; + + public CraftPlayer getPlayer() { + return (this.player == null) ? null : (CraftPlayer) this.player.getBukkitEntity(); } + private final static HashSet invalidItems = new HashSet(java.util.Arrays.asList(8, 9, 10, 11, 26, 34, 36, 43, 51, 55, 59, 62, 63, 64, 68, 71, 74, 75, 83, 90, 92, 93, 94, 104, 105, 115, 117, 118, 119, 125, 127, 132, 140, 141, 142, 144)); // TODO: Check after every update. + // CraftBukkit end public void e() { this.syncPosition(); @@ -104,7 +177,7 @@ this.minecraftServer.methodProfiler.a("keepAlive"); long i = this.d(); - if (i - this.f >= 15000L) { + if (i - this.f >= 30000L) { // CraftBukkit if (this.g) { this.disconnect(new ChatMessage("disconnect.timeout", new Object[0])); } else { @@ -116,15 +189,21 @@ } this.minecraftServer.methodProfiler.b(); + // CraftBukkit start + for (int spam; (spam = this.chatThrottle) > 0 && !chatSpamField.compareAndSet(this, spam, spam - 1); ) ; + /* Use thread-safe field access instead if (this.chatThrottle > 0) { --this.chatThrottle; } + */ + // CraftBukkit end if (this.j > 0) { --this.j; } if (this.player.J() > 0L && this.minecraftServer.getIdleTimeout() > 0 && MinecraftServer.aw() - this.player.J() > (long) (this.minecraftServer.getIdleTimeout() * 1000 * 60)) { + this.player.resetIdleTimer(); // CraftBukkit - SPIGOT-854 this.disconnect(new ChatMessage("multiplayer.disconnect.idling", new Object[0])); } @@ -143,18 +222,48 @@ return this.networkManager; } - public void disconnect(final IChatBaseComponent ichatbasecomponent) { - this.networkManager.sendPacket(new PacketPlayOutKickDisconnect(ichatbasecomponent), new GenericFutureListener() { - public void operationComplete(Future future) throws Exception { - PlayerConnection.this.networkManager.close(ichatbasecomponent); + // CraftBukkit start + @Deprecated + public void disconnect(IChatBaseComponent ichatbasecomponent) { + disconnect(CraftChatMessage.fromComponent(ichatbasecomponent, EnumChatFormat.WHITE)); + } + // CraftBukkit end + + public void disconnect(String s) { + // CraftBukkit start - fire PlayerKickEvent + if (this.processedDisconnect) { + return; + } + String leaveMessage = EnumChatFormat.YELLOW + this.player.getName() + " left the game."; + + PlayerKickEvent event = new PlayerKickEvent(this.server.getPlayer(this.player), s, leaveMessage); + + if (this.server.getServer().isRunning()) { + this.server.getPluginManager().callEvent(event); + } + + if (event.isCancelled()) { + // Do not kick the player + return; + } + // Send the possibly modified leave message + s = event.getReason(); + // CraftBukkit end + final ChatComponentText chatcomponenttext = new ChatComponentText(s); + + this.networkManager.sendPacket(new PacketPlayOutKickDisconnect(chatcomponenttext), new GenericFutureListener() { + public void operationComplete(Future future) throws Exception { // CraftBukkit - decompile error + PlayerConnection.this.networkManager.close(chatcomponenttext); } }, new GenericFutureListener[0]); + this.a(chatcomponenttext); // CraftBukkit - fire quit instantly this.networkManager.stopReading(); - Futures.getUnchecked(this.minecraftServer.postToMainThread(new Runnable() { + // CraftBukkit - Don't wait + this.minecraftServer.postToMainThread(new Runnable() { public void run() { PlayerConnection.this.networkManager.handleDisconnection(); } - })); + }); } public void a(PacketPlayInSteerVehicle packetplayinsteervehicle) { @@ -193,7 +302,34 @@ double d9 = entity.motX * entity.motX + entity.motY * entity.motY + entity.motZ * entity.motZ; double d10 = d6 * d6 + d7 * d7 + d8 * d8; - if (d10 - d9 > 100.0D && (!this.minecraftServer.R() || !this.minecraftServer.Q().equals(entity.getName()))) { + + // CraftBukkit start - handle custom speeds and skipped ticks + this.allowedPlayerTicks += (System.currentTimeMillis() / 50) - this.lastTick; + this.allowedPlayerTicks = Math.max(this.allowedPlayerTicks, 1); + this.lastTick = (int) (System.currentTimeMillis() / 50); + + ++this.receivedMovePackets; + int i = this.receivedMovePackets - this.processedMovePackets; + if (i > Math.max(this.allowedPlayerTicks, 5)) { + PlayerConnection.LOGGER.debug(this.player.getName() + " is sending move packets too frequently (" + i + " packets since last tick)"); + i = 1; + } + + if (d10 > 0) { + allowedPlayerTicks -= 1; + } else { + allowedPlayerTicks = 20; + } + float speed; + if (player.abilities.isFlying) { + speed = player.abilities.flySpeed * 20f; + } else { + speed = player.abilities.walkSpeed * 10f; + } + speed *= 2f; // TODO: Get the speed of the vehicle instead of the player + + if (d10 - d9 > Math.max(100.0D, Math.pow((double) (10.0F * (float) i * speed), 2)) && (!this.minecraftServer.R() || !this.minecraftServer.Q().equals(entity.getName()))) { + // CraftBukkit end PlayerConnection.LOGGER.warn("{} (vehicle of {}) moved too quickly! {},{},{}", entity.getName(), this.player.getName(), Double.valueOf(d6), Double.valueOf(d7), Double.valueOf(d8)); this.networkManager.sendPacket(new PacketPlayOutVehicleMove(entity)); return; @@ -231,6 +367,62 @@ return; } + // CraftBukkit start - fire PlayerMoveEvent + Player player = this.getPlayer(); + Location from = new Location(player.getWorld(), lastPosX, lastPosY, lastPosZ, lastYaw, lastPitch); // Get the Players previous Event location. + Location to = player.getLocation().clone(); // Start off the To location as the Players current location. + + // If the packet contains movement information then we update the To location with the correct XYZ. + to.setX(packetplayinvehiclemove.getX()); + to.setY(packetplayinvehiclemove.getY()); + to.setZ(packetplayinvehiclemove.getZ()); + + + // If the packet contains look information then we update the To location with the correct Yaw & Pitch. + to.setYaw(packetplayinvehiclemove.getYaw()); + to.setPitch(packetplayinvehiclemove.getPitch()); + + // Prevent 40 event-calls for less than a single pixel of movement >.> + double delta = Math.pow(this.lastPosX - to.getX(), 2) + Math.pow(this.lastPosY - to.getY(), 2) + Math.pow(this.lastPosZ - to.getZ(), 2); + float deltaAngle = Math.abs(this.lastYaw - to.getYaw()) + Math.abs(this.lastPitch - to.getPitch()); + + if ((delta > 1f / 256 || deltaAngle > 10f) && !this.player.isFrozen()) { + this.lastPosX = to.getX(); + this.lastPosY = to.getY(); + this.lastPosZ = to.getZ(); + this.lastYaw = to.getYaw(); + this.lastPitch = to.getPitch(); + + // Skip the first time we do this + if (from.getX() != Double.MAX_VALUE) { + Location oldTo = to.clone(); + PlayerMoveEvent event = new PlayerMoveEvent(player, from, to); + this.server.getPluginManager().callEvent(event); + + // If the event is cancelled we move the player back to their old location. + if (event.isCancelled()) { + teleport(from); + return; + } + + // If a Plugin has changed the To destination then we teleport the Player + // there to avoid any 'Moved wrongly' or 'Moved too quickly' errors. + // We only do this if the Event was not cancelled. + if (!oldTo.equals(event.getTo()) && !event.isCancelled()) { + this.player.getBukkitEntity().teleport(event.getTo(), PlayerTeleportEvent.TeleportCause.PLUGIN); + return; + } + + // Check to see if the Players Location has some how changed during the call of the event. + // This can happen due to a plugin teleporting the player instead of using .setTo() + if (!from.equals(this.getPlayer().getLocation()) && this.justTeleported) { + this.justTeleported = false; + return; + } + } + } + // CraftBukkit end + this.minecraftServer.getPlayerList().d(this.player); this.player.checkMovement(this.player.locX - d0, this.player.locY - d1, this.player.locZ - d2); this.D = d11 >= -0.03125D && !this.minecraftServer.getAllowFlight() && !worldserver.c(entity.getBoundingBox().g(0.0625D).b(0.0D, -0.55D, 0.0D)); @@ -244,7 +436,7 @@ public void a(PacketPlayInTeleportAccept packetplayinteleportaccept) { PlayerConnectionUtils.ensureMainThread(packetplayinteleportaccept, this, this.player.x()); - if (packetplayinteleportaccept.a() == this.teleportAwait) { + if (packetplayinteleportaccept.a() == this.teleportAwait && this.teleportPos != null) { // CraftBukkit this.player.setLocation(this.teleportPos.x, this.teleportPos.y, this.teleportPos.z, this.player.yaw, this.player.pitch); if (this.player.L()) { this.o = this.teleportPos.x; @@ -289,7 +481,7 @@ } else { WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); - if (!this.player.viewingCredits) { + if (!this.player.viewingCredits && !this.player.isFrozen()) { // CraftBukkit if (this.e == 0) { this.syncPosition(); } @@ -299,13 +491,21 @@ this.A = this.e; this.a(this.teleportPos.x, this.teleportPos.y, this.teleportPos.z, this.player.yaw, this.player.pitch); } - + this.allowedPlayerTicks = 20; // CraftBukkit } else { this.A = this.e; if (this.player.isPassenger()) { this.player.setLocation(this.player.locX, this.player.locY, this.player.locZ, packetplayinflying.a(this.player.yaw), packetplayinflying.b(this.player.pitch)); this.minecraftServer.getPlayerList().d(this.player); + this.allowedPlayerTicks = 20; // CraftBukkit } else { + // CraftBukkit - Make sure the move is valid but then reset it for plugins to modify + double prevX = player.locX; + double prevY = player.locY; + double prevZ = player.locZ; + float prevYaw = player.yaw; + float prevPitch = player.pitch; + // CraftBukkit end double d0 = this.player.locX; double d1 = this.player.locY; double d2 = this.player.locZ; @@ -330,15 +530,33 @@ ++this.receivedMovePackets; int i = this.receivedMovePackets - this.processedMovePackets; - if (i > 5) { + // CraftBukkit start - handle custom speeds and skipped ticks + this.allowedPlayerTicks += (System.currentTimeMillis() / 50) - this.lastTick; + this.allowedPlayerTicks = Math.max(this.allowedPlayerTicks, 1); + this.lastTick = (int) (System.currentTimeMillis() / 50); + + if (i > Math.max(this.allowedPlayerTicks, 5)) { PlayerConnection.LOGGER.debug("{} is sending move packets too frequently ({} packets since last tick)", this.player.getName(), Integer.valueOf(i)); i = 1; } + if (packetplayinflying.hasLook || d11 > 0) { + allowedPlayerTicks -= 1; + } else { + allowedPlayerTicks = 20; + } + float speed; + if (player.abilities.isFlying) { + speed = player.abilities.flySpeed * 20f; + } else { + speed = player.abilities.walkSpeed * 10f; + } + if (!this.player.L() && (!this.player.x().getGameRules().getBoolean("disableElytraMovementCheck") || !this.player.cP())) { float f2 = this.player.cP() ? 300.0F : 100.0F; - if (d11 - d10 > (double) (f2 * (float) i) && (!this.minecraftServer.R() || !this.minecraftServer.Q().equals(this.player.getName()))) { + if (d11 - d10 > Math.max(f2, Math.pow((double) (10.0F * (float) i * speed), 2)) && (!this.minecraftServer.R() || !this.minecraftServer.Q().equals(this.player.getName()))) { + // CraftBukkit end PlayerConnection.LOGGER.warn("{} moved too quickly! {},{},{}", this.player.getName(), Double.valueOf(d7), Double.valueOf(d8), Double.valueOf(d9)); this.a(this.player.locX, this.player.locY, this.player.locZ, this.player.yaw, this.player.pitch); return; @@ -384,6 +602,69 @@ } } + // CraftBukkit start - fire PlayerMoveEvent + // Rest to old location first + this.player.setLocation(prevX, prevY, prevZ, prevYaw, prevPitch); + + Player player = this.getPlayer(); + Location from = new Location(player.getWorld(), lastPosX, lastPosY, lastPosZ, lastYaw, lastPitch); // Get the Players previous Event location. + Location to = player.getLocation().clone(); // Start off the To location as the Players current location. + + // If the packet contains movement information then we update the To location with the correct XYZ. + if (packetplayinflying.hasPos) { + to.setX(packetplayinflying.x); + to.setY(packetplayinflying.y); + to.setZ(packetplayinflying.z); + } + + // If the packet contains look information then we update the To location with the correct Yaw & Pitch. + if (packetplayinflying.hasLook) { + to.setYaw(packetplayinflying.yaw); + to.setPitch(packetplayinflying.pitch); + } + + // Prevent 40 event-calls for less than a single pixel of movement >.> + double delta = Math.pow(this.lastPosX - to.getX(), 2) + Math.pow(this.lastPosY - to.getY(), 2) + Math.pow(this.lastPosZ - to.getZ(), 2); + float deltaAngle = Math.abs(this.lastYaw - to.getYaw()) + Math.abs(this.lastPitch - to.getPitch()); + + if ((delta > 1f / 256 || deltaAngle > 10f) && !this.player.isFrozen()) { + this.lastPosX = to.getX(); + this.lastPosY = to.getY(); + this.lastPosZ = to.getZ(); + this.lastYaw = to.getYaw(); + this.lastPitch = to.getPitch(); + + // Skip the first time we do this + if (from.getX() != Double.MAX_VALUE) { + Location oldTo = to.clone(); + PlayerMoveEvent event = new PlayerMoveEvent(player, from, to); + this.server.getPluginManager().callEvent(event); + + // If the event is cancelled we move the player back to their old location. + if (event.isCancelled()) { + teleport(from); + return; + } + + // If a Plugin has changed the To destination then we teleport the Player + // there to avoid any 'Moved wrongly' or 'Moved too quickly' errors. + // We only do this if the Event was not cancelled. + if (!oldTo.equals(event.getTo()) && !event.isCancelled()) { + this.player.getBukkitEntity().teleport(event.getTo(), PlayerTeleportEvent.TeleportCause.PLUGIN); + return; + } + + // Check to see if the Players Location has some how changed during the call of the event. + // This can happen due to a plugin teleporting the player instead of using .setTo() + if (!from.equals(this.getPlayer().getLocation()) && this.justTeleported) { + this.justTeleported = false; + return; + } + } + } + this.player.setLocation(d4, d5, d6, f, f1); // Copied from above + // CraftBukkit end + this.B = d12 >= -0.03125D; this.B &= !this.minecraftServer.getAllowFlight() && !this.player.abilities.canFly; this.B &= !this.player.hasEffect(MobEffects.LEVITATION) && !this.player.cP() && !worldserver.c(this.player.getBoundingBox().g(0.0625D).b(0.0D, -0.55D, 0.0D)); @@ -401,10 +682,76 @@ } public void a(double d0, double d1, double d2, float f, float f1) { - this.a(d0, d1, d2, f, f1, Collections.emptySet()); + this.a(d0, d1, d2, f, f1, Collections.emptySet()); + } + + // CraftBukkit start - Delegate to teleport(Location) + public void a(double d0, double d1, double d2, float f, float f1, PlayerTeleportEvent.TeleportCause cause) { + this.a(d0, d1, d2, f, f1, Collections.emptySet(), cause); } public void a(double d0, double d1, double d2, float f, float f1, Set set) { + this.a(d0, d1, d2, f, f1, set, PlayerTeleportEvent.TeleportCause.UNKNOWN); + } + + public void a(double d0, double d1, double d2, float f, float f1, Set set, PlayerTeleportEvent.TeleportCause cause) { + Player player = this.getPlayer(); + Location from = player.getLocation(); + + double x = d0; + double y = d1; + double z = d2; + float yaw = f; + float pitch = f1; + if (set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.X)) { + x += from.getX(); + } + if (set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.Y)) { + y += from.getY(); + } + if (set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.Z)) { + z += from.getZ(); + } + if (set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.Y_ROT)) { + yaw += from.getYaw(); + } + if (set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.X_ROT)) { + pitch += from.getPitch(); + } + + + Location to = new Location(this.getPlayer().getWorld(), x, y, z, yaw, pitch); + PlayerTeleportEvent event = new PlayerTeleportEvent(player, from.clone(), to.clone(), cause); + this.server.getPluginManager().callEvent(event); + + if (event.isCancelled() || !to.equals(event.getTo())) { + set.clear(); // Can't relative teleport + to = event.isCancelled() ? event.getFrom() : event.getTo(); + d0 = to.getX(); + d1 = to.getY(); + d2 = to.getZ(); + f = to.getYaw(); + f1 = to.getPitch(); + } + + this.internalTeleport(d0, d1, d2, f, f1, set); + } + + public void teleport(Location dest) { + internalTeleport(dest.getX(), dest.getY(), dest.getZ(), dest.getYaw(), dest.getPitch(), Collections.emptySet()); + } + + private void internalTeleport(double d0, double d1, double d2, float f, float f1, Set set) { + // CraftBukkit start + if (Float.isNaN(f)) { + f = 0; + } + if (Float.isNaN(f1)) { + f1 = 0; + } + + this.justTeleported = true; + // CraftBukkit end double d3 = set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.X) ? this.player.locX : 0.0D; double d4 = set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.Y) ? this.player.locY : 0.0D; double d5 = set.contains(PacketPlayOutPosition.EnumPlayerTeleportFlags.Z) ? this.player.locZ : 0.0D; @@ -421,6 +768,14 @@ f3 = f1 + this.player.pitch; } + // CraftBukkit start - update last location + this.lastPosX = this.teleportPos.x; + this.lastPosY = this.teleportPos.y; + this.lastPosZ = this.teleportPos.z; + this.lastYaw = f2; + this.lastPitch = f3; + // CraftBukkit end + if (++this.teleportAwait == Integer.MAX_VALUE) { this.teleportAwait = 0; } @@ -432,6 +787,7 @@ public void a(PacketPlayInBlockDig packetplayinblockdig) { PlayerConnectionUtils.ensureMainThread(packetplayinblockdig, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); BlockPosition blockposition = packetplayinblockdig.a(); @@ -441,7 +797,15 @@ if (!this.player.isSpectator()) { ItemStack itemstack = this.player.b(EnumHand.OFF_HAND); - this.player.a(EnumHand.OFF_HAND, this.player.b(EnumHand.MAIN_HAND)); + // CraftBukkit start + PlayerSwapHandItemsEvent swapItemsEvent = new PlayerSwapHandItemsEvent(getPlayer(), CraftItemStack.asBukkitCopy(itemstack), CraftItemStack.asBukkitCopy(this.player.b(EnumHand.MAIN_HAND))); + this.server.getPluginManager().callEvent(swapItemsEvent); + if (swapItemsEvent.isCancelled()) { + return; + } + itemstack = CraftItemStack.asNMSCopy(swapItemsEvent.getMainHandItem()); + this.player.a(EnumHand.OFF_HAND, CraftItemStack.asNMSCopy(swapItemsEvent.getOffHandItem())); + // CraftBukkit end this.player.a(EnumHand.MAIN_HAND, itemstack); } @@ -449,6 +813,21 @@ case DROP_ITEM: if (!this.player.isSpectator()) { + // limit how quickly items can be dropped + // If the ticks aren't the same then the count starts from 0 and we update the lastDropTick. + if (this.lastDropTick != MinecraftServer.currentTick) { + this.dropCount = 0; + this.lastDropTick = MinecraftServer.currentTick; + } else { + // Else we increment the drop count and check the amount. + this.dropCount++; + if (this.dropCount >= 20) { + LOGGER.warn(this.player.getName() + " dropped their items too quickly!"); + this.disconnect("You dropped your items too quickly (Hacking?)"); + return; + } + } + // CraftBukkit end this.player.a(false); } @@ -482,7 +861,15 @@ if (!this.minecraftServer.a(worldserver, blockposition, this.player) && worldserver.getWorldBorder().a(blockposition)) { this.player.playerInteractManager.a(blockposition, packetplayinblockdig.b()); } else { + // CraftBukkit start - fire PlayerInteractEvent + CraftEventFactory.callPlayerInteractEvent(this.player, Action.LEFT_CLICK_BLOCK, blockposition, packetplayinblockdig.b(), this.player.inventory.getItemInHand(), EnumHand.MAIN_HAND); this.player.playerConnection.sendPacket(new PacketPlayOutBlockChange(worldserver, blockposition)); + // Update any tile entity data for this block + TileEntity tileentity = worldserver.getTileEntity(blockposition); + if (tileentity != null) { + this.player.playerConnection.sendPacket(tileentity.getUpdatePacket()); + } + // CraftBukkit end } } else { if (packetplayinblockdig.c() == PacketPlayInBlockDig.EnumPlayerDigType.STOP_DESTROY_BLOCK) { @@ -502,10 +889,12 @@ default: throw new IllegalArgumentException("Invalid player action"); } + // CraftBukkit end } public void a(PacketPlayInUseItem packetplayinuseitem) { PlayerConnectionUtils.ensureMainThread(packetplayinuseitem, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); EnumHand enumhand = packetplayinuseitem.c(); ItemStack itemstack = this.player.b(enumhand); @@ -519,6 +908,13 @@ chatmessage.getChatModifier().setColor(EnumChatFormat.RED); this.player.playerConnection.sendPacket(new PacketPlayOutChat(chatmessage, ChatMessageType.GAME_INFO)); } else if (this.teleportPos == null && this.player.d((double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D) < 64.0D && !this.minecraftServer.a(worldserver, blockposition, this.player) && worldserver.getWorldBorder().a(blockposition)) { + // CraftBukkit start - Check if we can actually do something over this large a distance + Location eyeLoc = this.getPlayer().getEyeLocation(); + double reachDistance = NumberConversions.square(eyeLoc.getX() - blockposition.getX()) + NumberConversions.square(eyeLoc.getY() - blockposition.getY()) + NumberConversions.square(eyeLoc.getZ() - blockposition.getZ()); + if (reachDistance > (this.getPlayer().getGameMode() == org.bukkit.GameMode.CREATIVE ? CREATIVE_PLACE_DISTANCE_SQUARED : SURVIVAL_PLACE_DISTANCE_SQUARED)) { + return; + } + // CraftBukkit end this.player.playerInteractManager.a(this.player, worldserver, itemstack, enumhand, blockposition, enumdirection, packetplayinuseitem.d(), packetplayinuseitem.e(), packetplayinuseitem.f()); } @@ -528,13 +924,52 @@ public void a(PacketPlayInBlockPlace packetplayinblockplace) { PlayerConnectionUtils.ensureMainThread(packetplayinblockplace, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); EnumHand enumhand = packetplayinblockplace.a(); ItemStack itemstack = this.player.b(enumhand); this.player.resetIdleTimer(); if (!itemstack.isEmpty()) { - this.player.playerInteractManager.a(this.player, worldserver, itemstack, enumhand); + // CraftBukkit start + // Raytrace to look for 'rogue armswings' + float f1 = this.player.pitch; + float f2 = this.player.yaw; + double d0 = this.player.locX; + double d1 = this.player.locY + (double) this.player.getHeadHeight(); + double d2 = this.player.locZ; + Vec3D vec3d = new Vec3D(d0, d1, d2); + + float f3 = MathHelper.cos(-f2 * 0.017453292F - 3.1415927F); + float f4 = MathHelper.sin(-f2 * 0.017453292F - 3.1415927F); + float f5 = -MathHelper.cos(-f1 * 0.017453292F); + float f6 = MathHelper.sin(-f1 * 0.017453292F); + float f7 = f4 * f5; + float f8 = f3 * f5; + double d3 = player.playerInteractManager.getGameMode()== EnumGamemode.CREATIVE ? 5.0D : 4.5D; + Vec3D vec3d1 = vec3d.add((double) f7 * d3, (double) f6 * d3, (double) f8 * d3); + MovingObjectPosition movingobjectposition = this.player.world.rayTrace(vec3d, vec3d1, false); + + boolean cancelled; + if (movingobjectposition == null || movingobjectposition.type != MovingObjectPosition.EnumMovingObjectType.BLOCK) { + org.bukkit.event.player.PlayerInteractEvent event = CraftEventFactory.callPlayerInteractEvent(this.player, Action.RIGHT_CLICK_AIR, itemstack, enumhand); + cancelled = event.useItemInHand() == Event.Result.DENY; + } else { + if (player.playerInteractManager.firedInteract) { + player.playerInteractManager.firedInteract = false; + cancelled = player.playerInteractManager.interactResult; + } else { + org.bukkit.event.player.PlayerInteractEvent event = CraftEventFactory.callPlayerInteractEvent(player, Action.RIGHT_CLICK_BLOCK, movingobjectposition.a(), movingobjectposition.direction, itemstack, true, enumhand); + cancelled = event.useItemInHand() == Event.Result.DENY; + } + } + + if (cancelled) { + this.player.getBukkitEntity().updateInventory(); // SPIGOT-2524 + } else { + this.player.playerInteractManager.a(this.player, worldserver, itemstack, enumhand); + } + // CraftBukkit end } } @@ -545,8 +980,8 @@ WorldServer[] aworldserver = this.minecraftServer.worldServer; int i = aworldserver.length; - for (int j = 0; j < i; ++j) { - WorldServer worldserver = aworldserver[j]; + // CraftBukkit - use the worlds array list + for (WorldServer worldserver : minecraftServer.worlds) { if (worldserver != null) { entity = packetplayinspectate.a(worldserver); @@ -559,6 +994,8 @@ if (entity != null) { this.player.setSpectatorTarget(this.player); this.player.stopRiding(); + + /* CraftBukkit start - replace with bukkit handling for multi-world if (entity.world == this.player.world) { this.player.enderTeleportTo(entity.locX, entity.locY, entity.locZ); } else { @@ -584,12 +1021,20 @@ this.minecraftServer.getPlayerList().b(this.player, worldserver2); this.minecraftServer.getPlayerList().updateClient(this.player); } + */ + this.player.getBukkitEntity().teleport(entity.getBukkitEntity(), PlayerTeleportEvent.TeleportCause.SPECTATE); + // CraftBukkit end } } } - public void a(PacketPlayInResourcePackStatus packetplayinresourcepackstatus) {} + // CraftBukkit start + public void a(PacketPlayInResourcePackStatus packetplayinresourcepackstatus) { + PlayerConnectionUtils.ensureMainThread(packetplayinresourcepackstatus, this, this.player.x()); + this.server.getPluginManager().callEvent(new PlayerResourcePackStatusEvent(getPlayer(), PlayerResourcePackStatusEvent.Status.values()[packetplayinresourcepackstatus.status.ordinal()])); + } + // CraftBukkit end public void a(PacketPlayInBoatMove packetplayinboatmove) { PlayerConnectionUtils.ensureMainThread(packetplayinboatmove, this, this.player.x()); @@ -602,14 +1047,29 @@ } public void a(IChatBaseComponent ichatbasecomponent) { + // CraftBukkit start - Rarely it would send a disconnect line twice + if (this.processedDisconnect) { + return; + } else { + this.processedDisconnect = true; + } + // CraftBukkit end PlayerConnection.LOGGER.info("{} lost connection: {}", this.player.getName(), ichatbasecomponent.toPlainText()); + // CraftBukkit start - Replace vanilla quit message handling with our own. + /* this.minecraftServer.aD(); ChatMessage chatmessage = new ChatMessage("multiplayer.player.left", new Object[] { this.player.getScoreboardDisplayName()}); chatmessage.getChatModifier().setColor(EnumChatFormat.YELLOW); this.minecraftServer.getPlayerList().sendMessage(chatmessage); + */ + this.player.s(); - this.minecraftServer.getPlayerList().disconnect(this.player); + String quitMessage = this.minecraftServer.getPlayerList().disconnect(this.player); + if ((quitMessage != null) && (quitMessage.length() > 0)) { + this.minecraftServer.getPlayerList().sendMessage(CraftChatMessage.fromString(quitMessage)); + } + // CraftBukkit end if (this.minecraftServer.R() && this.player.getName().equals(this.minecraftServer.Q())) { PlayerConnection.LOGGER.info("Stopping singleplayer server as player logged out"); this.minecraftServer.safeShutdown(); @@ -631,6 +1091,15 @@ } } + // CraftBukkit start + if (packet == null) { + return; + } else if (packet instanceof PacketPlayOutSpawnPosition) { + PacketPlayOutSpawnPosition packet6 = (PacketPlayOutSpawnPosition) packet; + this.player.compassTarget = new Location(this.getPlayer().getWorld(), packet6.position.getX(), packet6.position.getY(), packet6.position.getZ()); + } + // CraftBukkit end + try { this.networkManager.sendPacket(packet); } catch (Throwable throwable) { @@ -652,17 +1121,32 @@ public void a(PacketPlayInHeldItemSlot packetplayinhelditemslot) { PlayerConnectionUtils.ensureMainThread(packetplayinhelditemslot, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit if (packetplayinhelditemslot.a() >= 0 && packetplayinhelditemslot.a() < PlayerInventory.getHotbarSize()) { + PlayerItemHeldEvent event = new PlayerItemHeldEvent(this.getPlayer(), this.player.inventory.itemInHandIndex, packetplayinhelditemslot.a()); + this.server.getPluginManager().callEvent(event); + if (event.isCancelled()) { + this.sendPacket(new PacketPlayOutHeldItemSlot(this.player.inventory.itemInHandIndex)); + this.player.resetIdleTimer(); + return; + } + // CraftBukkit end this.player.inventory.itemInHandIndex = packetplayinhelditemslot.a(); this.player.resetIdleTimer(); } else { PlayerConnection.LOGGER.warn("{} tried to set an invalid carried item", this.player.getName()); + this.disconnect("Nope!"); // CraftBukkit } } public void a(PacketPlayInChat packetplayinchat) { - PlayerConnectionUtils.ensureMainThread(packetplayinchat, this, this.player.x()); - if (this.player.getChatFlags() == EntityHuman.EnumChatVisibility.HIDDEN) { + // CraftBukkit start - async chat + boolean isSync = packetplayinchat.a().startsWith("/"); + if (packetplayinchat.a().startsWith("/")) { + PlayerConnectionUtils.ensureMainThread(packetplayinchat, this, this.player.x()); + } + // CraftBukkit end + if (this.player.dead || this.player.getChatFlags() == EntityHuman.EnumChatVisibility.HIDDEN) { // CraftBukkit - dead men tell no tales ChatMessage chatmessage = new ChatMessage("chat.cannotSend", new Object[0]); chatmessage.getChatModifier().setColor(EnumChatFormat.RED); @@ -675,39 +1159,249 @@ for (int i = 0; i < s.length(); ++i) { if (!SharedConstants.isAllowedChatCharacter(s.charAt(i))) { - this.disconnect(new ChatMessage("multiplayer.disconnect.illegal_characters", new Object[0])); + // CraftBukkit start - threadsafety + if (!isSync) { + Waitable waitable = new Waitable() { + @Override + protected Object evaluate() { + PlayerConnection.this.disconnect(new ChatMessage("multiplayer.disconnect.illegal_characters", new Object[0])); + return null; + } + }; + + this.minecraftServer.processQueue.add(waitable); + + try { + waitable.get(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } catch (ExecutionException e) { + throw new RuntimeException(e); + } + } else { + this.disconnect(new ChatMessage("multiplayer.disconnect.illegal_characters", new Object[0])); + } + // CraftBukkit end return; } } - if (s.startsWith("/")) { - this.handleCommand(s); + // CraftBukkit start + if (isSync) { + try { + this.minecraftServer.server.playerCommandState = true; + this.handleCommand(s); + } finally { + this.minecraftServer.server.playerCommandState = false; + } + } else if (s.isEmpty()) { + LOGGER.warn(this.player.getName() + " tried to send an empty message"); + } else if (getPlayer().isConversing()) { + getPlayer().acceptConversationInput(s); + } else if (this.player.getChatFlags() == EntityHuman.EnumChatVisibility.SYSTEM) { // Re-add "Command Only" flag check + ChatMessage chatmessage = new ChatMessage("chat.cannotSend", new Object[0]); + + chatmessage.getChatModifier().setColor(EnumChatFormat.RED); + this.sendPacket(new PacketPlayOutChat(chatmessage)); + } else if (true) { + this.chat(s, true); + // CraftBukkit end - the below is for reference. :) } else { ChatMessage chatmessage1 = new ChatMessage("chat.type.text", new Object[] { this.player.getScoreboardDisplayName(), s}); this.minecraftServer.getPlayerList().sendMessage(chatmessage1, false); } - this.chatThrottle += 20; - if (this.chatThrottle > 200 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) { - this.disconnect(new ChatMessage("disconnect.spam", new Object[0])); + // CraftBukkit start - replaced with thread safe throttle + // this.chatThrottle += 20; + if (chatSpamField.addAndGet(this, 20) > 200 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) { + if (!isSync) { + Waitable waitable = new Waitable() { + @Override + protected Object evaluate() { + PlayerConnection.this.disconnect(new ChatMessage("disconnect.spam", new Object[0])); + return null; + } + }; + + this.minecraftServer.processQueue.add(waitable); + + try { + waitable.get(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } catch (ExecutionException e) { + throw new RuntimeException(e); + } + } else { + this.disconnect(new ChatMessage("disconnect.spam", new Object[0])); + } + // CraftBukkit end } } } + // CraftBukkit start - add method + public void chat(String s, boolean async) { + if (s.isEmpty() || this.player.getChatFlags() == EntityHuman.EnumChatVisibility.HIDDEN) { + return; + } + + if (!async && s.startsWith("/")) { + this.handleCommand(s); + } else if (this.player.getChatFlags() == EntityHuman.EnumChatVisibility.SYSTEM) { + // Do nothing, this is coming from a plugin + } else { + Player player = this.getPlayer(); + AsyncPlayerChatEvent event = new AsyncPlayerChatEvent(async, player, s, new LazyPlayerSet(minecraftServer)); + this.server.getPluginManager().callEvent(event); + + if (PlayerChatEvent.getHandlerList().getRegisteredListeners().length != 0) { + // Evil plugins still listening to deprecated event + final PlayerChatEvent queueEvent = new PlayerChatEvent(player, event.getMessage(), event.getFormat(), event.getRecipients()); + queueEvent.setCancelled(event.isCancelled()); + Waitable waitable = new Waitable() { + @Override + protected Object evaluate() { + org.bukkit.Bukkit.getPluginManager().callEvent(queueEvent); + + if (queueEvent.isCancelled()) { + return null; + } + + String message = String.format(queueEvent.getFormat(), queueEvent.getPlayer().getDisplayName(), queueEvent.getMessage()); + PlayerConnection.this.minecraftServer.console.sendMessage(message); + if (((LazyPlayerSet) queueEvent.getRecipients()).isLazy()) { + for (Object player : PlayerConnection.this.minecraftServer.getPlayerList().players) { + ((EntityPlayer) player).sendMessage(CraftChatMessage.fromString(message)); + } + } else { + for (Player player : queueEvent.getRecipients()) { + player.sendMessage(message); + } + } + return null; + }}; + if (async) { + minecraftServer.processQueue.add(waitable); + } else { + waitable.run(); + } + try { + waitable.get(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); // This is proper habit for java. If we aren't handling it, pass it on! + } catch (ExecutionException e) { + throw new RuntimeException("Exception processing chat event", e.getCause()); + } + } else { + if (event.isCancelled()) { + return; + } + + s = String.format(event.getFormat(), event.getPlayer().getDisplayName(), event.getMessage()); + minecraftServer.console.sendMessage(s); + if (((LazyPlayerSet) event.getRecipients()).isLazy()) { + for (Object recipient : minecraftServer.getPlayerList().players) { + ((EntityPlayer) recipient).sendMessage(CraftChatMessage.fromString(s)); + } + } else { + for (Player recipient : event.getRecipients()) { + recipient.sendMessage(s); + } + } + } + } + } + // CraftBukkit end + private void handleCommand(String s) { - this.minecraftServer.getCommandHandler().a(this.player, s); + // CraftBukkit start - whole method + this.LOGGER.info(this.player.getName() + " issued server command: " + s); + + CraftPlayer player = this.getPlayer(); + + PlayerCommandPreprocessEvent event = new PlayerCommandPreprocessEvent(player, s, new LazyPlayerSet(minecraftServer)); + this.server.getPluginManager().callEvent(event); + + if (event.isCancelled()) { + return; + } + + try { + if (this.server.dispatchCommand(event.getPlayer(), event.getMessage().substring(1))) { + return; + } + } catch (org.bukkit.command.CommandException ex) { + player.sendMessage(org.bukkit.ChatColor.RED + "An internal error occurred while attempting to perform this command"); + java.util.logging.Logger.getLogger(PlayerConnection.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); + return; + } + // this.minecraftServer.getCommandHandler().a(this.player, s); + // CraftBukkit end } public void a(PacketPlayInArmAnimation packetplayinarmanimation) { PlayerConnectionUtils.ensureMainThread(packetplayinarmanimation, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit this.player.resetIdleTimer(); + // CraftBukkit start - Raytrace to look for 'rogue armswings' + float f1 = this.player.pitch; + float f2 = this.player.yaw; + double d0 = this.player.locX; + double d1 = this.player.locY + (double) this.player.getHeadHeight(); + double d2 = this.player.locZ; + Vec3D vec3d = new Vec3D(d0, d1, d2); + + float f3 = MathHelper.cos(-f2 * 0.017453292F - 3.1415927F); + float f4 = MathHelper.sin(-f2 * 0.017453292F - 3.1415927F); + float f5 = -MathHelper.cos(-f1 * 0.017453292F); + float f6 = MathHelper.sin(-f1 * 0.017453292F); + float f7 = f4 * f5; + float f8 = f3 * f5; + double d3 = player.playerInteractManager.getGameMode()== EnumGamemode.CREATIVE ? 5.0D : 4.5D; + Vec3D vec3d1 = vec3d.add((double) f7 * d3, (double) f6 * d3, (double) f8 * d3); + MovingObjectPosition movingobjectposition = this.player.world.rayTrace(vec3d, vec3d1, false); + + if (movingobjectposition == null || movingobjectposition.type != MovingObjectPosition.EnumMovingObjectType.BLOCK) { + CraftEventFactory.callPlayerInteractEvent(this.player, Action.LEFT_CLICK_AIR, this.player.inventory.getItemInHand(), EnumHand.MAIN_HAND); + } + + // Arm swing animation + PlayerAnimationEvent event = new PlayerAnimationEvent(this.getPlayer()); + this.server.getPluginManager().callEvent(event); + + if (event.isCancelled()) return; + // CraftBukkit end this.player.a(packetplayinarmanimation.a()); } public void a(PacketPlayInEntityAction packetplayinentityaction) { PlayerConnectionUtils.ensureMainThread(packetplayinentityaction, this, this.player.x()); + // CraftBukkit start + if (this.player.dead) return; + switch (packetplayinentityaction.b()) { + case START_SNEAKING: + case STOP_SNEAKING: + PlayerToggleSneakEvent event = new PlayerToggleSneakEvent(this.getPlayer(), packetplayinentityaction.b() == PacketPlayInEntityAction.EnumPlayerAction.START_SNEAKING); + this.server.getPluginManager().callEvent(event); + + if (event.isCancelled()) { + return; + } + break; + case START_SPRINTING: + case STOP_SPRINTING: + PlayerToggleSprintEvent e2 = new PlayerToggleSprintEvent(this.getPlayer(), packetplayinentityaction.b() == PacketPlayInEntityAction.EnumPlayerAction.START_SPRINTING); + this.server.getPluginManager().callEvent(e2); + + if (e2.isCancelled()) { + return; + } + break; + } + // CraftBukkit end this.player.resetIdleTimer(); IJumpable ijumpable; @@ -779,6 +1473,7 @@ public void a(PacketPlayInUseEntity packetplayinuseentity) { PlayerConnectionUtils.ensureMainThread(packetplayinuseentity, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); Entity entity = packetplayinuseentity.a((World) worldserver); @@ -794,20 +1489,68 @@ if (this.player.h(entity) < d0) { EnumHand enumhand; + ItemStack itemInHand = this.player.b(packetplayinuseentity.b() == null ? EnumHand.MAIN_HAND : packetplayinuseentity.b()); // CraftBukkit + + if (packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.INTERACT + || packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.INTERACT_AT) { + // CraftBukkit start + boolean triggerLeashUpdate = itemInHand != null && itemInHand.getItem() == Items.LEAD && entity instanceof EntityInsentient; + Item origItem = this.player.inventory.getItemInHand() == null ? null : this.player.inventory.getItemInHand().getItem(); + PlayerInteractEntityEvent event; + if (packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.INTERACT) { + event = new PlayerInteractEntityEvent((Player) this.getPlayer(), entity.getBukkitEntity(), (packetplayinuseentity.b() == EnumHand.OFF_HAND) ? EquipmentSlot.OFF_HAND : EquipmentSlot.HAND); + } else { + Vec3D target = packetplayinuseentity.c(); + event = new PlayerInteractAtEntityEvent((Player) this.getPlayer(), entity.getBukkitEntity(), new org.bukkit.util.Vector(target.x, target.y, target.z), (packetplayinuseentity.b() == EnumHand.OFF_HAND) ? EquipmentSlot.OFF_HAND : EquipmentSlot.HAND); + } + this.server.getPluginManager().callEvent(event); + + if (triggerLeashUpdate && (event.isCancelled() || this.player.inventory.getItemInHand() == null || this.player.inventory.getItemInHand().getItem() != Items.LEAD)) { + // Refresh the current leash state + this.sendPacket(new PacketPlayOutAttachEntity(entity, ((EntityInsentient) entity).getLeashHolder())); + } + + if (event.isCancelled() || this.player.inventory.getItemInHand() == null || this.player.inventory.getItemInHand().getItem() != origItem) { + // Refresh the current entity metadata + this.sendPacket(new PacketPlayOutEntityMetadata(entity.getId(), entity.datawatcher, true)); + } + + if (event.isCancelled()) { + return; + } + // CraftBukkit end + } + if (packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.INTERACT) { enumhand = packetplayinuseentity.b(); this.player.a(entity, enumhand); + // CraftBukkit start + if (!itemInHand.isEmpty() && itemInHand.getCount() <= -1) { + this.player.updateInventory(this.player.activeContainer); + } + // CraftBukkit end } else if (packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.INTERACT_AT) { enumhand = packetplayinuseentity.b(); entity.a(this.player, packetplayinuseentity.c(), enumhand); + // CraftBukkit start + if (!itemInHand.isEmpty() && itemInHand.getCount() <= -1) { + this.player.updateInventory(this.player.activeContainer); + } + // CraftBukkit end } else if (packetplayinuseentity.a() == PacketPlayInUseEntity.EnumEntityUseAction.ATTACK) { - if (entity instanceof EntityItem || entity instanceof EntityExperienceOrb || entity instanceof EntityArrow || entity == this.player) { + if (entity instanceof EntityItem || entity instanceof EntityExperienceOrb || entity instanceof EntityArrow || (entity == this.player && !player.isSpectator())) { // CraftBukkit this.disconnect(new ChatMessage("multiplayer.disconnect.invalid_entity_attacked", new Object[0])); this.minecraftServer.warning("Player " + this.player.getName() + " tried to attack an invalid entity"); return; } this.player.attack(entity); + + // CraftBukkit start + if (!itemInHand.isEmpty() && itemInHand.getCount() <= -1) { + this.player.updateInventory(this.player.activeContainer); + } + // CraftBukkit end } } } @@ -823,7 +1566,8 @@ case PERFORM_RESPAWN: if (this.player.viewingCredits) { this.player.viewingCredits = false; - this.player = this.minecraftServer.getPlayerList().moveToWorld(this.player, 0, true); + // this.player = this.minecraftServer.getPlayerList().moveToWorld(this.player, 0, true); + this.minecraftServer.getPlayerList().changeDimension(this.player, 0, PlayerTeleportEvent.TeleportCause.END_PORTAL); // CraftBukkit - reroute logic through custom portal management CriterionTriggers.u.a(this.player, DimensionManager.THE_END, DimensionManager.OVERWORLD); } else { if (this.player.getHealth() > 0.0F) { @@ -846,14 +1590,20 @@ public void a(PacketPlayInCloseWindow packetplayinclosewindow) { PlayerConnectionUtils.ensureMainThread(packetplayinclosewindow, this, this.player.x()); + + if (this.player.isFrozen()) return; // CraftBukkit + CraftEventFactory.handleInventoryCloseEvent(this.player); // CraftBukkit + this.player.r(); } public void a(PacketPlayInWindowClick packetplayinwindowclick) { PlayerConnectionUtils.ensureMainThread(packetplayinwindowclick, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit this.player.resetIdleTimer(); - if (this.player.activeContainer.windowId == packetplayinwindowclick.a() && this.player.activeContainer.c(this.player)) { - if (this.player.isSpectator()) { + if (this.player.activeContainer.windowId == packetplayinwindowclick.a() && this.player.activeContainer.c(this.player) && this.player.activeContainer.canUse(this.player)) { // CraftBukkit + boolean cancelled = this.player.isSpectator(); // CraftBukkit - see below if + if (false/*this.player.isSpectator()*/) { // CraftBukkit NonNullList nonnulllist = NonNullList.a(); for (int i = 0; i < this.player.activeContainer.slots.size(); ++i) { @@ -862,8 +1612,274 @@ this.player.a(this.player.activeContainer, nonnulllist); } else { - ItemStack itemstack = this.player.activeContainer.a(packetplayinwindowclick.b(), packetplayinwindowclick.c(), packetplayinwindowclick.f(), this.player); + // CraftBukkit start - Call InventoryClickEvent + if (packetplayinwindowclick.b() < -1 && packetplayinwindowclick.b() != -999) { + return; + } + + InventoryView inventory = this.player.activeContainer.getBukkitView(); + SlotType type = CraftInventoryView.getSlotType(inventory, packetplayinwindowclick.b()); + + InventoryClickEvent event; + ClickType click = ClickType.UNKNOWN; + InventoryAction action = InventoryAction.UNKNOWN; + + ItemStack itemstack = ItemStack.a; + + switch (packetplayinwindowclick.f()) { + case PICKUP: + if (packetplayinwindowclick.c() == 0) { + click = ClickType.LEFT; + } else if (packetplayinwindowclick.c() == 1) { + click = ClickType.RIGHT; + } + if (packetplayinwindowclick.c() == 0 || packetplayinwindowclick.c() == 1) { + action = InventoryAction.NOTHING; // Don't want to repeat ourselves + if (packetplayinwindowclick.b() == -999) { + if (!player.inventory.getCarried().isEmpty()) { + action = packetplayinwindowclick.c() == 0 ? InventoryAction.DROP_ALL_CURSOR : InventoryAction.DROP_ONE_CURSOR; + } + } else if (packetplayinwindowclick.b() < 0) { + action = InventoryAction.NOTHING; + } else { + Slot slot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (slot != null) { + ItemStack clickedItem = slot.getItem(); + ItemStack cursor = player.inventory.getCarried(); + if (clickedItem.isEmpty()) { + if (!cursor.isEmpty()) { + action = packetplayinwindowclick.c() == 0 ? InventoryAction.PLACE_ALL : InventoryAction.PLACE_ONE; + } + } else if (slot.isAllowed(player)) { + if (cursor.isEmpty()) { + action = packetplayinwindowclick.c() == 0 ? InventoryAction.PICKUP_ALL : InventoryAction.PICKUP_HALF; + } else if (slot.isAllowed(cursor)) { + if (clickedItem.doMaterialsMatch(cursor) && ItemStack.equals(clickedItem, cursor)) { + int toPlace = packetplayinwindowclick.c() == 0 ? cursor.getCount() : 1; + toPlace = Math.min(toPlace, clickedItem.getMaxStackSize() - clickedItem.getCount()); + toPlace = Math.min(toPlace, slot.inventory.getMaxStackSize() - clickedItem.getCount()); + if (toPlace == 1) { + action = InventoryAction.PLACE_ONE; + } else if (toPlace == cursor.getCount()) { + action = InventoryAction.PLACE_ALL; + } else if (toPlace < 0) { + action = toPlace != -1 ? InventoryAction.PICKUP_SOME : InventoryAction.PICKUP_ONE; // this happens with oversized stacks + } else if (toPlace != 0) { + action = InventoryAction.PLACE_SOME; + } + } else if (cursor.getCount() <= slot.getMaxStackSize()) { + action = InventoryAction.SWAP_WITH_CURSOR; + } + } else if (cursor.getItem() == clickedItem.getItem() && (!cursor.usesData() || cursor.getData() == clickedItem.getData()) && ItemStack.equals(cursor, clickedItem)) { + if (clickedItem.getCount() >= 0) { + if (clickedItem.getCount() + cursor.getCount() <= cursor.getMaxStackSize()) { + // As of 1.5, this is result slots only + action = InventoryAction.PICKUP_ALL; + } + } + } + } + } + } + } + break; + // TODO check on updates + case QUICK_MOVE: + if (packetplayinwindowclick.c() == 0) { + click = ClickType.SHIFT_LEFT; + } else if (packetplayinwindowclick.c() == 1) { + click = ClickType.SHIFT_RIGHT; + } + if (packetplayinwindowclick.c() == 0 || packetplayinwindowclick.c() == 1) { + if (packetplayinwindowclick.b() < 0) { + action = InventoryAction.NOTHING; + } else { + Slot slot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (slot != null && slot.isAllowed(this.player) && slot.hasItem()) { + action = InventoryAction.MOVE_TO_OTHER_INVENTORY; + } else { + action = InventoryAction.NOTHING; + } + } + } + break; + case SWAP: + if (packetplayinwindowclick.c() >= 0 && packetplayinwindowclick.c() < 9) { + click = ClickType.NUMBER_KEY; + Slot clickedSlot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (clickedSlot.isAllowed(player)) { + ItemStack hotbar = this.player.inventory.getItem(packetplayinwindowclick.c()); + boolean canCleanSwap = hotbar.isEmpty() || (clickedSlot.inventory == player.inventory && clickedSlot.isAllowed(hotbar)); // the slot will accept the hotbar item + if (clickedSlot.hasItem()) { + if (canCleanSwap) { + action = InventoryAction.HOTBAR_SWAP; + } else { + action = InventoryAction.HOTBAR_MOVE_AND_READD; + } + } else if (!clickedSlot.hasItem() && !hotbar.isEmpty() && clickedSlot.isAllowed(hotbar)) { + action = InventoryAction.HOTBAR_SWAP; + } else { + action = InventoryAction.NOTHING; + } + } else { + action = InventoryAction.NOTHING; + } + } + break; + case CLONE: + if (packetplayinwindowclick.c() == 2) { + click = ClickType.MIDDLE; + if (packetplayinwindowclick.b() == -999) { + action = InventoryAction.NOTHING; + } else { + Slot slot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (slot != null && slot.hasItem() && player.abilities.canInstantlyBuild && player.inventory.getCarried().isEmpty()) { + action = InventoryAction.CLONE_STACK; + } else { + action = InventoryAction.NOTHING; + } + } + } else { + click = ClickType.UNKNOWN; + action = InventoryAction.UNKNOWN; + } + break; + case THROW: + if (packetplayinwindowclick.b() >= 0) { + if (packetplayinwindowclick.c() == 0) { + click = ClickType.DROP; + Slot slot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (slot != null && slot.hasItem() && slot.isAllowed(player) && !slot.getItem().isEmpty() && slot.getItem().getItem() != Item.getItemOf(Blocks.AIR)) { + action = InventoryAction.DROP_ONE_SLOT; + } else { + action = InventoryAction.NOTHING; + } + } else if (packetplayinwindowclick.c() == 1) { + click = ClickType.CONTROL_DROP; + Slot slot = this.player.activeContainer.getSlot(packetplayinwindowclick.b()); + if (slot != null && slot.hasItem() && slot.isAllowed(player) && !slot.getItem().isEmpty() && slot.getItem().getItem() != Item.getItemOf(Blocks.AIR)) { + action = InventoryAction.DROP_ALL_SLOT; + } else { + action = InventoryAction.NOTHING; + } + } + } else { + // Sane default (because this happens when they are holding nothing. Don't ask why.) + click = ClickType.LEFT; + if (packetplayinwindowclick.c() == 1) { + click = ClickType.RIGHT; + } + action = InventoryAction.NOTHING; + } + break; + case QUICK_CRAFT: + itemstack = this.player.activeContainer.a(packetplayinwindowclick.b(), packetplayinwindowclick.c(), packetplayinwindowclick.f(), this.player); + break; + case PICKUP_ALL: + click = ClickType.DOUBLE_CLICK; + action = InventoryAction.NOTHING; + if (packetplayinwindowclick.b() >= 0 && !this.player.inventory.getCarried().isEmpty()) { + ItemStack cursor = this.player.inventory.getCarried(); + action = InventoryAction.NOTHING; + // Quick check for if we have any of the item + if (inventory.getTopInventory().contains(org.bukkit.Material.getMaterial(Item.getId(cursor.getItem()))) || inventory.getBottomInventory().contains(org.bukkit.Material.getMaterial(Item.getId(cursor.getItem())))) { + action = InventoryAction.COLLECT_TO_CURSOR; + } + } + break; + default: + break; + } + + if (packetplayinwindowclick.f() != InventoryClickType.QUICK_CRAFT) { + if (click == ClickType.NUMBER_KEY) { + event = new InventoryClickEvent(inventory, type, packetplayinwindowclick.b(), click, action, packetplayinwindowclick.c()); + } else { + event = new InventoryClickEvent(inventory, type, packetplayinwindowclick.b(), click, action); + } + + org.bukkit.inventory.Inventory top = inventory.getTopInventory(); + if (packetplayinwindowclick.b() == 0 && top instanceof CraftingInventory) { + org.bukkit.inventory.Recipe recipe = ((CraftingInventory) top).getRecipe(); + if (recipe != null) { + if (click == ClickType.NUMBER_KEY) { + event = new CraftItemEvent(recipe, inventory, type, packetplayinwindowclick.b(), click, action, packetplayinwindowclick.c()); + } else { + event = new CraftItemEvent(recipe, inventory, type, packetplayinwindowclick.b(), click, action); + } + } + } + + event.setCancelled(cancelled); + Container oldContainer = this.player.activeContainer; // SPIGOT-1224 + server.getPluginManager().callEvent(event); + if (this.player.activeContainer != oldContainer) { + return; + } + + switch (event.getResult()) { + case ALLOW: + case DEFAULT: + itemstack = this.player.activeContainer.a(packetplayinwindowclick.b(), packetplayinwindowclick.c(), packetplayinwindowclick.f(), this.player); + break; + case DENY: + /* Needs enum constructor in InventoryAction + if (action.modifiesOtherSlots()) { + + } else { + if (action.modifiesCursor()) { + this.player.playerConnection.sendPacket(new Packet103SetSlot(-1, -1, this.player.inventory.getCarried())); + } + if (action.modifiesClicked()) { + this.player.playerConnection.sendPacket(new Packet103SetSlot(this.player.activeContainer.windowId, packet102windowclick.slot, this.player.activeContainer.getSlot(packet102windowclick.slot).getItem())); + } + }*/ + switch (action) { + // Modified other slots + case PICKUP_ALL: + case MOVE_TO_OTHER_INVENTORY: + case HOTBAR_MOVE_AND_READD: + case HOTBAR_SWAP: + case COLLECT_TO_CURSOR: + case UNKNOWN: + this.player.updateInventory(this.player.activeContainer); + break; + // Modified cursor and clicked + case PICKUP_SOME: + case PICKUP_HALF: + case PICKUP_ONE: + case PLACE_ALL: + case PLACE_SOME: + case PLACE_ONE: + case SWAP_WITH_CURSOR: + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-1, -1, this.player.inventory.getCarried())); + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(this.player.activeContainer.windowId, packetplayinwindowclick.b(), this.player.activeContainer.getSlot(packetplayinwindowclick.b()).getItem())); + break; + // Modified clicked only + case DROP_ALL_SLOT: + case DROP_ONE_SLOT: + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(this.player.activeContainer.windowId, packetplayinwindowclick.b(), this.player.activeContainer.getSlot(packetplayinwindowclick.b()).getItem())); + break; + // Modified cursor only + case DROP_ALL_CURSOR: + case DROP_ONE_CURSOR: + case CLONE_STACK: + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-1, -1, this.player.inventory.getCarried())); + break; + // Nothing + case NOTHING: + break; + } + return; + } + if (event instanceof CraftItemEvent) { + // Need to update the inventory on crafting to + // correctly support custom recipes + player.updateInventory(player.activeContainer); + } + } + // CraftBukkit end if (ItemStack.matches(packetplayinwindowclick.e(), itemstack)) { this.player.playerConnection.sendPacket(new PacketPlayOutTransaction(packetplayinwindowclick.a(), packetplayinwindowclick.d(), true)); this.player.f = true; @@ -900,6 +1916,7 @@ public void a(PacketPlayInEnchantItem packetplayinenchantitem) { PlayerConnectionUtils.ensureMainThread(packetplayinenchantitem, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit this.player.resetIdleTimer(); if (this.player.activeContainer.windowId == packetplayinenchantitem.a() && this.player.activeContainer.c(this.player) && !this.player.isSpectator()) { this.player.activeContainer.a(this.player, packetplayinenchantitem.b()); @@ -933,7 +1950,45 @@ } boolean flag1 = packetplayinsetcreativeslot.a() >= 1 && packetplayinsetcreativeslot.a() <= 45; - boolean flag2 = itemstack.isEmpty() || itemstack.getData() >= 0 && itemstack.getCount() <= 64 && !itemstack.isEmpty(); + // CraftBukkit - Add invalidItems check + boolean flag2 = itemstack.isEmpty() || itemstack.getData() >= 0 && itemstack.getCount() <= 64 && !itemstack.isEmpty() && !invalidItems.contains(Item.getId(itemstack.getItem())); + if (flag || (flag1 && !ItemStack.matches(this.player.defaultContainer.getSlot(packetplayinsetcreativeslot.a()).getItem(), packetplayinsetcreativeslot.getItemStack()))) { // Insist on valid slot + // CraftBukkit start - Call click event + InventoryView inventory = this.player.defaultContainer.getBukkitView(); + org.bukkit.inventory.ItemStack item = CraftItemStack.asBukkitCopy(packetplayinsetcreativeslot.getItemStack()); + + SlotType type = SlotType.QUICKBAR; + if (flag) { + type = SlotType.OUTSIDE; + } else if (packetplayinsetcreativeslot.a() < 36) { + if (packetplayinsetcreativeslot.a() >= 5 && packetplayinsetcreativeslot.a() < 9) { + type = SlotType.ARMOR; + } else { + type = SlotType.CONTAINER; + } + } + InventoryCreativeEvent event = new InventoryCreativeEvent(inventory, type, flag ? -999 : packetplayinsetcreativeslot.a(), item); + server.getPluginManager().callEvent(event); + + itemstack = CraftItemStack.asNMSCopy(event.getCursor()); + + switch (event.getResult()) { + case ALLOW: + // Plugin cleared the id / stacksize checks + flag2 = true; + break; + case DEFAULT: + break; + case DENY: + // Reset the slot + if (packetplayinsetcreativeslot.a() >= 0) { + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(this.player.defaultContainer.windowId, packetplayinsetcreativeslot.a(), this.player.defaultContainer.getSlot(packetplayinsetcreativeslot.a()).getItem())); + this.player.playerConnection.sendPacket(new PacketPlayOutSetSlot(-1, -1, ItemStack.a)); + } + return; + } + } + // CraftBukkit end if (flag1 && flag2) { if (itemstack.isEmpty()) { @@ -957,6 +2012,7 @@ public void a(PacketPlayInTransaction packetplayintransaction) { PlayerConnectionUtils.ensureMainThread(packetplayintransaction, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit Short oshort = (Short) this.k.get(this.player.activeContainer.windowId); if (oshort != null && packetplayintransaction.b() == oshort.shortValue() && this.player.activeContainer.windowId == packetplayintransaction.a() && !this.player.activeContainer.c(this.player) && !this.player.isSpectator()) { @@ -967,6 +2023,7 @@ public void a(PacketPlayInUpdateSign packetplayinupdatesign) { PlayerConnectionUtils.ensureMainThread(packetplayinupdatesign, this, this.player.x()); + if (this.player.isFrozen()) return; // CraftBukkit this.player.resetIdleTimer(); WorldServer worldserver = this.minecraftServer.getWorldServer(this.player.dimension); BlockPosition blockposition = packetplayinupdatesign.a(); @@ -983,14 +2040,30 @@ if (!tileentitysign.a() || tileentitysign.e() != this.player) { this.minecraftServer.warning("Player " + this.player.getName() + " just tried to change non-editable sign"); + this.sendPacket(tileentity.getUpdatePacket()); // CraftBukkit return; } String[] astring = packetplayinupdatesign.b(); + // CraftBukkit start + Player player = this.server.getPlayer(this.player); + int x = packetplayinupdatesign.a().getX(); + int y = packetplayinupdatesign.a().getY(); + int z = packetplayinupdatesign.a().getZ(); + String[] lines = new String[4]; + for (int i = 0; i < astring.length; ++i) { - tileentitysign.lines[i] = new ChatComponentText(EnumChatFormat.a(astring[i])); + lines[i] = EnumChatFormat.a(new ChatComponentText(EnumChatFormat.a(astring[i])).toPlainText()); } + SignChangeEvent event = new SignChangeEvent((org.bukkit.craftbukkit.block.CraftBlock) player.getWorld().getBlockAt(x, y, z), this.server.getPlayer(this.player), lines); + this.server.getPluginManager().callEvent(event); + + if (!event.isCancelled()) { + System.arraycopy(org.bukkit.craftbukkit.block.CraftSign.sanitizeLines(event.getLines()), 0, tileentitysign.lines, 0, 4); + tileentitysign.isEditable = false; + } + // CraftBukkit end tileentitysign.update(); worldserver.notify(blockposition, iblockdata, iblockdata, 3); @@ -999,6 +2072,7 @@ } public void a(PacketPlayInKeepAlive packetplayinkeepalive) { + PlayerConnectionUtils.ensureMainThread(packetplayinkeepalive, this, this.player.x()); // CraftBukkit if (this.g && packetplayinkeepalive.a() == this.h) { int i = (int) (this.d() - this.f); @@ -1016,11 +2090,27 @@ public void a(PacketPlayInAbilities packetplayinabilities) { PlayerConnectionUtils.ensureMainThread(packetplayinabilities, this, this.player.x()); - this.player.abilities.isFlying = packetplayinabilities.isFlying() && this.player.abilities.canFly; + // CraftBukkit start + if (this.player.abilities.canFly && this.player.abilities.isFlying != packetplayinabilities.isFlying()) { + PlayerToggleFlightEvent event = new PlayerToggleFlightEvent(this.server.getPlayer(this.player), packetplayinabilities.isFlying()); + this.server.getPluginManager().callEvent(event); + if (!event.isCancelled()) { + this.player.abilities.isFlying = packetplayinabilities.isFlying(); // Actually set the player's flying status + } else { + this.player.updateAbilities(); // Tell the player their ability was reverted + } + } + // CraftBukkit end } public void a(PacketPlayInTabComplete packetplayintabcomplete) { PlayerConnectionUtils.ensureMainThread(packetplayintabcomplete, this, this.player.x()); + // CraftBukkit start + if (chatSpamField.addAndGet(this, 10) > 500 && !this.minecraftServer.getPlayerList().isOp(this.player.getProfile())) { + this.disconnect(new ChatMessage("disconnect.spam", new Object[0])); + return; + } + // CraftBukkit end ArrayList arraylist = Lists.newArrayList(); Iterator iterator = this.minecraftServer.tabCompleteCommand(this.player, packetplayintabcomplete.a(), packetplayintabcomplete.b(), packetplayintabcomplete.c()).iterator(); @@ -1046,6 +2136,13 @@ ItemStack itemstack1; if ("MC|BEdit".equals(s)) { + // CraftBukkit start + if (this.lastBookTick + 20 > MinecraftServer.currentTick) { + this.disconnect("Book edited too quickly!"); + return; + } + this.lastBookTick = MinecraftServer.currentTick; + // CraftBukkit end packetdataserializer = packetplayincustompayload.b(); try { @@ -1064,15 +2161,25 @@ } if (itemstack.getItem() == Items.WRITABLE_BOOK && itemstack.getItem() == itemstack1.getItem()) { + itemstack1 = new ItemStack(Items.WRITABLE_BOOK); // CraftBukkit itemstack1.a("pages", (NBTBase) itemstack.getTag().getList("pages", 8)); + CraftEventFactory.handleEditBookEvent(player, itemstack1); // CraftBukkit } } catch (Exception exception) { PlayerConnection.LOGGER.error("Couldn\'t handle book info", exception); + this.disconnect("Invalid book data!"); // CraftBukkit } } else { String s1; if ("MC|BSign".equals(s)) { + // CraftBukkit start + if (this.lastBookTick + 20 > MinecraftServer.currentTick) { + this.disconnect("Book edited too quickly!"); + return; + } + this.lastBookTick = MinecraftServer.currentTick; + // CraftBukkit end packetdataserializer = packetplayincustompayload.b(); try { @@ -1106,10 +2213,11 @@ } itemstack2.a("pages", (NBTBase) nbttaglist); - this.player.setSlot(EnumItemSlot.MAINHAND, itemstack2); + CraftEventFactory.handleEditBookEvent(player, itemstack2); // CraftBukkit } } catch (Exception exception1) { PlayerConnection.LOGGER.error("Couldn\'t sign book", exception1); + this.disconnect("Invalid book data!"); // CraftBukkit } } else if ("MC|TrSel".equals(s)) { try { @@ -1121,6 +2229,7 @@ } } catch (Exception exception2) { PlayerConnection.LOGGER.error("Couldn\'t select trade", exception2); + this.disconnect("Invalid trade data!"); // CraftBukkit } } else { TileEntity tileentity; @@ -1170,6 +2279,7 @@ } } catch (Exception exception3) { PlayerConnection.LOGGER.error("Couldn\'t set command block", exception3); + this.disconnect("Invalid command data!"); // CraftBukkit } } else if ("MC|AutoCmd".equals(s)) { if (!this.minecraftServer.getEnableCommandBlock()) { @@ -1237,6 +2347,7 @@ } } catch (Exception exception4) { PlayerConnection.LOGGER.error("Couldn\'t set command block", exception4); + this.disconnect("Invalid command data!"); // CraftBukkit } } else { int k; @@ -1260,6 +2371,7 @@ } } catch (Exception exception5) { PlayerConnection.LOGGER.error("Couldn\'t set beacon", exception5); + this.disconnect("Invalid beacon data!"); // CraftBukkit } } } else if ("MC|ItemName".equals(s)) { @@ -1346,6 +2458,7 @@ } } catch (Exception exception6) { PlayerConnection.LOGGER.error("Couldn\'t set structure block", exception6); + this.disconnect("Invalid structure data!"); // CraftBukkit } } else if ("MC|PickItem".equals(s)) { packetdataserializer = packetplayincustompayload.b(); @@ -1358,11 +2471,49 @@ this.player.playerConnection.sendPacket(new PacketPlayOutHeldItemSlot(this.player.inventory.itemInHandIndex)); } catch (Exception exception7) { PlayerConnection.LOGGER.error("Couldn\'t pick item", exception7); + this.disconnect("Invalid pick item!"); // CraftBukkit } } + // CraftBukkit start + else if (packetplayincustompayload.a().equals("REGISTER")) { + try { + String channels = packetplayincustompayload.b().toString(com.google.common.base.Charsets.UTF_8); + for (String channel : channels.split("\0")) { + getPlayer().addChannel(channel); + } + } catch (Exception ex) { + PlayerConnection.LOGGER.error("Couldn\'t register custom payload", ex); + this.disconnect("Invalid payload REGISTER!"); + } + } else if (packetplayincustompayload.a().equals("UNREGISTER")) { + try { + String channels = packetplayincustompayload.b().toString(com.google.common.base.Charsets.UTF_8); + for (String channel : channels.split("\0")) { + getPlayer().removeChannel(channel); + } + } catch (Exception ex) { + PlayerConnection.LOGGER.error("Couldn\'t unregister custom payload", ex); + this.disconnect("Invalid payload UNREGISTER!"); + } + } else { + try { + byte[] data = new byte[packetplayincustompayload.b().readableBytes()]; + packetplayincustompayload.b().readBytes(data); + server.getMessenger().dispatchIncomingMessage(player.getBukkitEntity(), packetplayincustompayload.a(), data); + } catch (Exception ex) { + PlayerConnection.LOGGER.error("Couldn\'t dispatch custom payload", ex); + this.disconnect("Invalid custom payload!"); + } + } + // CraftBukkit end } } } } + + // CraftBukkit start - Add "isDisconnected" method + public final boolean isDisconnected() { + return !this.player.joining && !this.networkManager.isConnected(); + } }