Harden event/internal access slightly
This commit is contained in:
Jikoo
196
plugin/src/main/java/com/lishid/openinv/InternalAccessor.java
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196
plugin/src/main/java/com/lishid/openinv/InternalAccessor.java
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/*
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* Copyright (C) 2011-2022 lishid. All rights reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.lishid.openinv;
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import com.lishid.openinv.internal.IAnySilentContainer;
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import com.lishid.openinv.internal.IPlayerDataManager;
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import com.lishid.openinv.internal.ISpecialEnderChest;
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import com.lishid.openinv.internal.ISpecialInventory;
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import com.lishid.openinv.internal.ISpecialPlayerInventory;
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import com.lishid.openinv.util.InventoryAccess;
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import java.lang.reflect.Constructor;
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import org.bukkit.entity.Player;
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import org.bukkit.plugin.Plugin;
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import org.jetbrains.annotations.NotNull;
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class InternalAccessor {
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private final @NotNull Plugin plugin;
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private final String version;
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private boolean supported = false;
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private IPlayerDataManager playerDataManager;
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private IAnySilentContainer anySilentContainer;
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InternalAccessor(@NotNull Plugin plugin) {
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this.plugin = plugin;
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String packageName = plugin.getServer().getClass().getPackage().getName();
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this.version = packageName.substring(packageName.lastIndexOf('.') + 1);
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try {
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Class.forName("com.lishid.openinv.internal." + this.version + ".SpecialPlayerInventory");
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Class.forName("com.lishid.openinv.internal." + this.version + ".SpecialEnderChest");
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this.playerDataManager = this.createObject(IPlayerDataManager.class, "PlayerDataManager");
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this.anySilentContainer = this.createObject(IAnySilentContainer.class, "AnySilentContainer");
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this.supported = InventoryAccess.isUsable();
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} catch (Exception ignored) {}
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}
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public String getReleasesLink() {
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return switch (version) {
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case "1_4_5", "1_4_6", "v1_4_R1", "v1_5_R2", "v1_5_R3", "v1_6_R1", "v1_6_R2", "v1_6_R3",
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"v1_7_R1", "v1_7_R2", "v1_7_R3", "v1_7_R4", "v1_8_R1", "v1_8_R2",
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"v1_9_R1", "v1_9_R2", "v1_10_R1", "v1_11_R1", "v1_12_R1"
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-> "https://github.com/lishid/OpenInv/releases/tag/4.0.0 (OpenInv-legacy)";
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case "v1_13_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.0.0";
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case "v1_13_R2" -> "https://github.com/lishid/OpenInv/releases/tag/4.0.7";
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case "v1_14_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.1";
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case "v1_16_R1" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.4";
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case "v1_8_R3", "v1_15_R1", "v1_16_R2" -> "https://github.com/lishid/OpenInv/releases/tag/4.1.5";
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case "v1_16_R3" -> "https://github.com/Jikoo/OpenInv/releases/tag/4.1.8";
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default -> "https://github.com/Jikoo/OpenInv/releases";
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};
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}
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private @NotNull <T> T createObject(
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@NotNull Class<? extends T> assignableClass,
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@NotNull String className,
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@NotNull Object @NotNull ... params)
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throws ClassCastException, ReflectiveOperationException {
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// Fetch internal class if it exists.
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Class<?> internalClass = Class.forName("com.lishid.openinv.internal." + this.version + "." + className);
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// Quick return: no parameters, no need to fiddle about finding the correct constructor.
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if (params.length == 0) {
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return assignableClass.cast(internalClass.getConstructor().newInstance());
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}
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// Search constructors for one matching the given parameters
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nextConstructor: for (Constructor<?> constructor : internalClass.getConstructors()) {
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Class<?>[] requiredClasses = constructor.getParameterTypes();
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if (requiredClasses.length != params.length) {
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continue;
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}
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for (int i = 0; i < params.length; ++i) {
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if (!requiredClasses[i].isAssignableFrom(params[i].getClass())) {
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continue nextConstructor;
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}
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}
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return assignableClass.cast(constructor.newInstance(params));
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}
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StringBuilder builder = new StringBuilder("Found class ").append(internalClass.getName())
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.append(" but cannot find any matching constructors for [");
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for (Object object : params) {
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builder.append(object.getClass().getName()).append(", ");
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}
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builder.delete(builder.length() - 2, builder.length());
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String message = builder.append(']').toString();
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this.plugin.getLogger().warning(message);
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throw new NoSuchMethodException(message);
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}
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private @NotNull <T extends ISpecialInventory> T createSpecialInventory(
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@NotNull Class<? extends T> assignableClass,
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@NotNull String className,
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@NotNull Player player,
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boolean online) throws InstantiationException {
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if (!this.supported) {
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throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
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}
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try {
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return this.createObject(assignableClass, className, player, online);
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} catch (Exception original) {
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InstantiationException exception = new InstantiationException(String.format("Unable to create a new %s", className));
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exception.initCause(original.fillInStackTrace());
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throw exception;
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}
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}
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/**
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* Creates an instance of the IAnySilentContainer implementation for the current server version.
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*
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* @return the IAnySilentContainer
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* @throws IllegalStateException if server version is unsupported
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*/
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public @NotNull IAnySilentContainer getAnySilentContainer() {
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if (!this.supported) {
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throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
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}
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return this.anySilentContainer;
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}
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/**
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* Creates an instance of the IPlayerDataManager implementation for the current server version.
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*
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* @return the IPlayerDataManager
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* @throws IllegalStateException if server version is unsupported
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*/
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public @NotNull IPlayerDataManager getPlayerDataManager() {
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if (!this.supported) {
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throw new IllegalStateException(String.format("Unsupported server version %s!", this.version));
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}
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return this.playerDataManager;
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}
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/**
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* Gets the server implementation version.
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*
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* @return the version
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*/
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public @NotNull String getVersion() {
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return this.version;
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}
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/**
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* Checks if the server implementation is supported.
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*
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* @return true if initialized for a supported server version
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*/
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public boolean isSupported() {
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return this.supported;
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}
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/**
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* Creates an instance of the ISpecialEnderChest implementation for the given Player, or
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* null if the current version is unsupported.
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*
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* @param player the Player
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* @param online true if the Player is online
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* @return the ISpecialEnderChest created
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* @throws InstantiationException if the ISpecialEnderChest could not be instantiated
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*/
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public ISpecialEnderChest newSpecialEnderChest(final Player player, final boolean online) throws InstantiationException {
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return this.createSpecialInventory(ISpecialEnderChest.class, "SpecialEnderChest", player, online);
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}
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/**
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* Creates an instance of the ISpecialPlayerInventory implementation for the given Player..
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*
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* @param player the Player
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* @param online true if the Player is online
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* @return the ISpecialPlayerInventory created
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* @throws InstantiationException if the ISpecialPlayerInventory could not be instantiated
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*/
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public ISpecialPlayerInventory newSpecialPlayerInventory(final Player player, final boolean online) throws InstantiationException {
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return this.createSpecialInventory(ISpecialPlayerInventory.class, "SpecialPlayerInventory", player, online);
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}
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}
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