package com.plotsquared.bukkit.titles;
import com.plotsquared.bukkit.chat.Reflection;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class HackTitleManager extends TitleManager {
/**
* Create a new 1.8 title.
*
* @param title Title text
* @param subtitle Subtitle text
* @param fadeInTime Fade in time
* @param stayTime Stay on screen time
* @param fadeOutTime Fade out time
*/
HackTitleManager(String title, String subtitle, int fadeInTime, int stayTime, int fadeOutTime) {
super(title, subtitle, fadeInTime, stayTime, fadeOutTime);
}
/**
* Load spigot and NMS classes.
*/
@Override
void loadClasses() {
this.packetTitle = getClass("org.spigotmc.ProtocolInjector$PacketTitle");
this.packetActions = getClass("org.spigotmc.ProtocolInjector$PacketTitle$Action");
this.nmsChatSerializer = Reflection.getNMSClass("ChatSerializer");
}
@Override public void send(Player player) throws IllegalArgumentException, ReflectiveOperationException, SecurityException {
if ((getProtocolVersion(player) >= 47) && isSpigot() && (this.packetTitle != null)) {
// First reset previous settings
resetTitle(player);
// Send timings first
Object handle = getHandle(player);
Object connection = getField(handle.getClass(), "playerConnection").get(handle);
Object[] actions = this.packetActions.getEnumConstants();
Method sendPacket = getMethod(connection.getClass(), "sendPacket");
Object packet = this.packetTitle.getConstructor(this.packetActions, Integer.TYPE, Integer.TYPE, Integer.TYPE).newInstance(actions[2],
this.fadeInTime * (this.ticks ? 1 : 20),
this.stayTime * (this.ticks ? 1 : 20),
this.fadeOutTime * (this.ticks ? 1 : 20));
// Send if set
if ((this.fadeInTime != -1) && (this.fadeOutTime != -1) && (this.stayTime != -1)) {
sendPacket.invoke(connection, packet);
}
// Send title
Object serialized = getMethod(this.nmsChatSerializer, "a", String.class).invoke(null,
"{text:\"" + ChatColor.translateAlternateColorCodes('&', this.getTitle()) + "\",color:" + this.titleColor.name().toLowerCase()
+ "}");
packet = this.packetTitle.getConstructor(this.packetActions, Reflection.getNMSClass("IChatBaseComponent"))
.newInstance(actions[0], serialized);
sendPacket.invoke(connection, packet);
if (!this.getSubtitle().isEmpty()) {
// Send subtitle if present
serialized = getMethod(this.nmsChatSerializer, "a", String.class).invoke(null,
"{text:\"" + ChatColor.translateAlternateColorCodes('&', this.getSubtitle()) + "\",color:" + this.subtitleColor.name()
.toLowerCase() + "}");
packet = this.packetTitle.getConstructor(this.packetActions, Reflection.getNMSClass("IChatBaseComponent"))
.newInstance(actions[1], serialized);
sendPacket.invoke(connection, packet);
}
}
}
@Override public void clearTitle(Player player) throws IllegalArgumentException, ReflectiveOperationException, SecurityException {
if ((getProtocolVersion(player) >= 47) && isSpigot()) {
// Send timings first
Object handle = getHandle(player);
Object connection = getField(handle.getClass(), "playerConnection").get(handle);
Object[] actions = this.packetActions.getEnumConstants();
Method sendPacket = getMethod(connection.getClass(), "sendPacket");
Object packet = this.packetTitle.getConstructor(this.packetActions).newInstance(actions[3]);
sendPacket.invoke(connection, packet);
}
}
@Override public void resetTitle(Player player) throws IllegalArgumentException, ReflectiveOperationException, SecurityException {
if ((getProtocolVersion(player) >= 47) && isSpigot()) {
// Send timings first
Object handle = getHandle(player);
Object connection = getField(handle.getClass(), "playerConnection").get(handle);
Object[] actions = this.packetActions.getEnumConstants();
Method sendPacket = getMethod(connection.getClass(), "sendPacket");
Object packet = this.packetTitle.getConstructor(this.packetActions).newInstance(actions[4]);
sendPacket.invoke(connection, packet);
}
}
/**
* Get the protocol version of the player.
*
* @param player Player
* @return Protocol version
* @throws IllegalArgumentException
* @throws ReflectiveOperationException
* @throws SecurityException
*/
private int getProtocolVersion(Player player) throws IllegalArgumentException, ReflectiveOperationException, SecurityException {
Object handle = getHandle(player);
Object connection = getField(handle.getClass(), "playerConnection").get(handle);
Object networkManager = getValue("networkManager", connection);
return (Integer) getMethod("getVersion", networkManager.getClass()).invoke(networkManager);
}
/**
* Check if running spigot.
*
* @return Spigot
*/
private boolean isSpigot() {
return Bukkit.getVersion().contains("Spigot");
}
/**
* Get class by url.
*
* @param namespace Namespace url
* @return Class
*/
private Class<?> getClass(String namespace) {
try {
return Class.forName(namespace);
} catch (ClassNotFoundException ignored) {}
return null;
}
private Field getField(String name, Class<?> clazz) throws NoSuchFieldException, SecurityException {
return clazz.getDeclaredField(name);
}
private Object getValue(String name, Object obj) throws ReflectiveOperationException, SecurityException, IllegalArgumentException {
Field f = getField(name, obj.getClass());
f.setAccessible(true);
return f.get(obj);
}
private Field getField(Class<?> clazz, String name) {
try {
Field field = clazz.getDeclaredField(name);
field.setAccessible(true);
return field;
} catch (SecurityException | NoSuchFieldException e) {
e.printStackTrace();
return null;
}
}
private Method getMethod(Class<?> clazz, String name, Class<?>... args) {
for (Method m : clazz.getMethods()) {
if (m.getName().equals(name) && ((args.length == 0) || classListEqual(args, m.getParameterTypes()))) {
m.setAccessible(true);
return m;
}
}
return null;
}
}