86 lines
3.1 KiB
Java
86 lines
3.1 KiB
Java
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016-2018
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.djrapitops.plan.gathering.timed;
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import com.djrapitops.plan.utilities.java.Reflection;
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import org.bukkit.entity.Player;
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import java.lang.invoke.MethodHandle;
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public class ReflectiveLevelEntityPlayerLatencyFieldMethod implements PingMethod {
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private static MethodHandle pingField;
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private static MethodHandle getHandleMethod;
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private String reasonForUnavailability;
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private static void setMethods() throws IllegalAccessException, NoSuchFieldException, NoSuchMethodException, ClassNotFoundException {
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MethodHandle[] methodHandles = PingMethodReflection.getMethods(
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Reflection.getCraftBukkitClass("entity.CraftPlayer"),
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getEntityPlayer(),
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"getHandle",
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"latency"
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);
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getHandleMethod = methodHandles[0];
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pingField = methodHandles[1];
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}
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private static Class<?> getEntityPlayer() throws ClassNotFoundException {
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try {
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return Class.forName("net.minecraft.server.level.EntityPlayer");
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} catch (NullPointerException classLoaderError) {
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throw new ClassNotFoundException("net.minecraft.server.level.EntityPlayer");
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}
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}
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@Override
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public boolean isAvailable() {
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try {
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setMethods();
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} catch (NoSuchMethodException | IllegalAccessException | NoSuchFieldException | ClassNotFoundException |
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IllegalArgumentException reflectiveEx) {
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reasonForUnavailability = reflectiveEx.toString();
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return false;
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}
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return pingField != null;
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}
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@Override
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public int getPing(Player player) {
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try {
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Object entityPlayer = getHandleMethod.invoke(player);
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return (int) pingField.invoke(entityPlayer);
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} catch (Exception ex) {
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return -1;
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} catch (Throwable throwable) {
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throw (Error) throwable;
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}
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}
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@Override
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public String getReasonForUnavailability() {
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return reasonForUnavailability;
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}
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}
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