/
PacketOutHandler.java
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/
PacketOutHandler.java
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package net.aufdemrand.denizen.utilities.packets.intercept;
import io.netty.buffer.Unpooled;
import net.aufdemrand.denizen.events.player.PlayerReceivesMessageScriptEvent;
import net.aufdemrand.denizen.objects.dPlayer;
import net.aufdemrand.denizen.scripts.commands.server.ExecuteCommand;
import net.aufdemrand.denizen.scripts.containers.core.ItemScriptHelper;
import net.aufdemrand.denizen.utilities.DenizenAPI;
import net.aufdemrand.denizen.utilities.PlayerProfileEditor;
import net.aufdemrand.denizen.utilities.debugging.dB;
import net.aufdemrand.denizen.utilities.entity.EntityFakePlayer;
import net.aufdemrand.denizen.utilities.entity.HideEntity;
import net.aufdemrand.denizen.utilities.packets.PacketHelper;
import net.aufdemrand.denizencore.objects.Element;
import net.minecraft.server.v1_9_R1.*;
import org.bukkit.Bukkit;
import java.lang.reflect.Field;
import java.util.Map;
import java.util.UUID;
// TODO: 1.9
public class PacketOutHandler {
/**
* Handles all packets going out from the server.
*
* @param player the player the packet is being sent to
* @param packet the client-bound packet
* @return whether to cancel sending the packet
*/
public static boolean handle(final EntityPlayer player, Packet packet) {
try {
if (packet instanceof PacketPlayOutChat) {
if (ExecuteCommand.silencedPlayers.contains(player.getUniqueID())) {
return true;
}
PacketPlayOutChat cPacket = (PacketPlayOutChat) packet;
int pos = chat_position.getInt(cPacket);
if (pos != 2) {
PlayerReceivesMessageScriptEvent event = PlayerReceivesMessageScriptEvent.instance;
// TODO: 1.9 event.message = new Element(((IChatBaseComponent) chat_message.get(cPacket)).c());
event.system = new Element(pos == 1);
event.player = dPlayer.mirrorBukkitPlayer(player.getBukkitEntity());
event.cancelled = false;
event.fire();
return event.cancelled;
}
}
else if (packet instanceof PacketPlayOutSetSlot) {
PacketPlayOutSetSlot ssPacket = (PacketPlayOutSetSlot) packet;
// int windowId = set_slot_windowId.getInt(ssPacket);
// int slotId = set_slot_slotId.getInt(ssPacket);
ItemStack itemStack = (ItemStack) set_slot_itemStack.get(ssPacket);
set_slot_itemStack.set(ssPacket, removeItemScriptLore(itemStack));
}
else if (packet instanceof PacketPlayOutWindowItems) {
PacketPlayOutWindowItems wiPacket = (PacketPlayOutWindowItems) packet;
// int windowId = set_slot_windowId.getInt(wiPacket);
ItemStack[] itemStacks = (ItemStack[]) window_items_itemStackArray.get(wiPacket);
for (int i = 0; i < itemStacks.length; i++) {
itemStacks[i] = removeItemScriptLore(itemStacks[i]);
}
window_items_itemStackArray.set(wiPacket, itemStacks);
}
else if (packet instanceof PacketPlayOutNamedEntitySpawn) {
PacketPlayOutNamedEntitySpawn nesPacket = (PacketPlayOutNamedEntitySpawn) packet;
int entityId = named_spawn_entityId.getInt(nesPacket);
if (entityIsHiding(player, entityId)) {
return true;
}
UUID entityUUID = (UUID) named_spawn_entityUUID.get(nesPacket);
final Entity entity = ((WorldServer) player.getWorld()).getEntity(entityUUID);
if (entity instanceof EntityFakePlayer) {
player.playerConnection.sendPacket(new PacketPlayOutPlayerInfo(
PacketPlayOutPlayerInfo.EnumPlayerInfoAction.ADD_PLAYER,
(EntityFakePlayer) entity));
Bukkit.getScheduler().runTaskLater(DenizenAPI.getCurrentInstance(), new Runnable() {
@Override
public void run() {
player.playerConnection.sendPacket(new PacketPlayOutPlayerInfo(
PacketPlayOutPlayerInfo.EnumPlayerInfoAction.REMOVE_PLAYER,
(EntityFakePlayer) entity));
}
}, 5);
}
}
else if (packet instanceof PacketPlayOutSpawnEntity) {
PacketPlayOutSpawnEntity sePacket = (PacketPlayOutSpawnEntity) packet;
int entityId = spawn_entityId.getInt(sePacket);
return entityIsHiding(player, entityId);
}
else if (packet instanceof PacketPlayOutSpawnEntityLiving) {
PacketPlayOutSpawnEntityLiving selPacket = (PacketPlayOutSpawnEntityLiving) packet;
int entityId = spawn_living_entityId.getInt(selPacket);
return entityIsHiding(player, entityId);
}
else if (packet instanceof PacketPlayOutSpawnEntityPainting) {
PacketPlayOutSpawnEntityPainting sepPacket = (PacketPlayOutSpawnEntityPainting) packet;
int entityId = spawn_painting_entityId.getInt(sepPacket);
return entityIsHiding(player, entityId);
}
else if (packet instanceof PacketPlayOutSpawnEntityExperienceOrb) {
PacketPlayOutSpawnEntityExperienceOrb seePacket = (PacketPlayOutSpawnEntityExperienceOrb) packet;
int entityId = spawn_experience_entityId.getInt(seePacket);
return entityIsHiding(player, entityId);
}
else if (packet instanceof PacketPlayOutPlayerInfo) {
PlayerProfileEditor.updatePlayerProfiles((PacketPlayOutPlayerInfo) packet);
}
else if (packet instanceof PacketPlayOutCustomPayload) {
PacketPlayOutCustomPayload cPacket = (PacketPlayOutCustomPayload) packet;
String name = (String) custom_name.get(cPacket);
if (name.equals("MC|TrList")) {
PacketDataSerializer serializer = (PacketDataSerializer) custom_serializer.get(cPacket);
PacketDataSerializer newSerializer = new PacketDataSerializer(Unpooled.buffer());
// Container number, we don't need this
newSerializer.writeInt(serializer.readInt());
// Number of trades
byte trades = serializer.readByte();
newSerializer.writeByte(trades);
// The trades
for (int i = 0; i < trades; i++) {
// The first item cost
// TODO: 1.9 ItemStack buyItem1 = serializer.i();
// TODO: 1.9 newSerializer.a(removeItemScriptLore(buyItem1));
// The item to be bought
// TODO: 1.9 ItemStack buyItem3 = serializer.i();
// TODO: 1.9 newSerializer.a(removeItemScriptLore(buyItem3));
// Whether there is a second item cost
boolean hasItem2 = serializer.readBoolean();
newSerializer.writeBoolean(hasItem2);
// The second item cost, if there is one
if (hasItem2) {
// TODO: 1.9 ItemStack buyItem2 = serializer.i();
// TODO: 1.9 newSerializer.a(removeItemScriptLore(buyItem2));
}
// Has used max times
boolean usedMax = serializer.readBoolean();
newSerializer.writeBoolean(usedMax);
// Current uses
int uses = serializer.readInt();
newSerializer.writeInt(uses);
// Max uses
int maxUses = serializer.readInt();
newSerializer.writeInt(maxUses);
}
custom_serializer.set(cPacket, newSerializer);
}
}
}
catch (Exception e) {
dB.echoError(e);
}
return false;
}
private static ItemStack removeItemScriptLore(ItemStack itemStack) throws Exception {
if (itemStack != null && itemStack.hasTag() && !itemStack.getTag().isEmpty()) {
NBTTagCompound tag = itemStack.getTag();
NBTTagCompound display = tag.getCompound("display");
NBTTagList lore = (NBTTagList) display.get("Lore");
if (lore == null || lore.isEmpty()) {
return itemStack;
}
String hash = null;
for (int i = 0; i < lore.size(); i++) {
String line = lore.getString(i);
if (line.startsWith(ItemScriptHelper.ItemScriptHashID)) {
hash = line;
// TODO: 1.9 lore.a(i);
break;
}
}
if (hash != null) {
display.set("Lore", lore);
tag.set("display", display);
tag.setString("Denizen Item Script", hash);
itemStack.setTag(tag);
}
}
return itemStack;
}
private static boolean entityIsHiding(EntityPlayer player, int entityId) {
UUID playerUUID = player.getUniqueID();
if (!HideEntity.hiddenEntities.containsKey(playerUUID)) {
return false;
}
EntityTracker tracker = ((WorldServer) player.world).tracker;
EntityTrackerEntry entry = tracker.trackedEntities.get(entityId);
if (entry == null) {
return false;
}
// TODO: 1.9 UUID entityUUID = entry.tracker.getUniqueID();
// TODO: 1.9 if (HideEntity.hiddenEntities.get(playerUUID).contains(entityUUID)) {
// TODO: 1.9 entry.clear(player);
// TODO: 1.9 return true;
// TODO: 1.9 }
return false;
}
//////////////////////////////////
//// Packet Fields
///////////
private static final Field chat_message, chat_position;
private static final Field set_slot_windowId, set_slot_slotId, set_slot_itemStack;
private static final Field window_items_windowId, window_items_itemStackArray;
private static final Field named_spawn_entityId, named_spawn_entityUUID;
private static final Field spawn_entityId;
private static final Field spawn_living_entityId;
private static final Field spawn_painting_entityId;
private static final Field spawn_experience_entityId;
private static final Field custom_name, custom_serializer;
static {
Map<String, Field> fields = PacketHelper.registerFields(PacketPlayOutChat.class);
chat_message = fields.get("a");// TODO: 1.9
chat_position = fields.get("b");// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutSetSlot.class);
set_slot_windowId = fields.get("a");// TODO: 1.9
set_slot_slotId = fields.get("b");// TODO: 1.9
set_slot_itemStack = fields.get("c");// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutWindowItems.class);
window_items_windowId = fields.get("a");// TODO: 1.9
window_items_itemStackArray = fields.get("b");// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutNamedEntitySpawn.class);
named_spawn_entityId = fields.get("a");// TODO: 1.9
named_spawn_entityUUID = fields.get("b");// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutSpawnEntity.class);
spawn_entityId = fields.get("a"); // Other fields currently irrelevant// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutSpawnEntityLiving.class);
spawn_living_entityId = fields.get("a"); // Other fields currently irrelevant// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutSpawnEntityPainting.class);
spawn_painting_entityId = fields.get("a"); // Other fields currently irrelevant// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutSpawnEntityExperienceOrb.class);
spawn_experience_entityId = fields.get("a"); // Other fields currently irrelevant// TODO: 1.9
fields = PacketHelper.registerFields(PacketPlayOutCustomPayload.class);
custom_name = fields.get("a");// TODO: 1.9
custom_serializer = fields.get("b");// TODO: 1.9
}
}