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Ensure old Paper builds can still use ping passthrough
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90 changes: 90 additions & 0 deletions
90
bootstrap/spigot/src/main/java/org/geysermc/geyser/platform/spigot/ReflectedNames.java
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| @@ -0,0 +1,90 @@ | ||
| /* | ||
| * Copyright (c) 2019-2022 GeyserMC. http://geysermc.org | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| * | ||
| * @author GeyserMC | ||
| * @link https://github.com/GeyserMC/Geyser | ||
| */ | ||
|
|
||
| package org.geysermc.geyser.platform.spigot; | ||
|
|
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| import com.destroystokyo.paper.event.server.PaperServerListPingEvent; | ||
| import com.destroystokyo.paper.network.StatusClient; | ||
| import org.bukkit.event.server.ServerListPingEvent; | ||
| import org.bukkit.util.CachedServerIcon; | ||
|
|
||
| import javax.annotation.Nullable; | ||
| import java.lang.reflect.Constructor; | ||
| import java.net.InetAddress; | ||
|
|
||
| /** | ||
| * A utility class for checking on the existence of classes, constructors, fields, methods | ||
| */ | ||
| public final class ReflectedNames { | ||
|
|
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| static boolean checkPaperPingEvent() { | ||
| return classExists("com.destroystokyo.paper.event.server.PaperServerListPingEvent"); | ||
| } | ||
|
|
||
| /** | ||
| * @return if this class name exists | ||
| */ | ||
| private static boolean classExists(String clazz) { | ||
| try { | ||
| Class.forName(clazz); | ||
| return true; | ||
| } catch (ClassNotFoundException e) { | ||
| return false; | ||
| } | ||
| } | ||
|
|
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| static boolean newSpigotPingConstructorExists() { | ||
| return getConstructor(ServerListPingEvent.class, InetAddress.class, String.class, boolean.class, int.class, int.class) != null; | ||
| } | ||
|
|
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| static Constructor<PaperServerListPingEvent> getOldPaperPingConstructor() { | ||
| if (getConstructor(PaperServerListPingEvent.class, StatusClient.class, String.class, boolean.class, int.class, | ||
| int.class, String.class, int.class, CachedServerIcon.class) != null) { | ||
| // @NotNull StatusClient client, @NotNull String motd, boolean shouldSendChatPreviews, int numPlayers, int maxPlayers, | ||
| // @NotNull String version, int protocolVersion, @Nullable CachedServerIcon favicon | ||
| // New constructor is present | ||
| return null; | ||
| } | ||
| // @NotNull StatusClient client, @NotNull String motd, int numPlayers, int maxPlayers, | ||
| // @NotNull String version, int protocolVersion, @Nullable CachedServerIcon favicon | ||
| return getConstructor(PaperServerListPingEvent.class, StatusClient.class, String.class, int.class, int.class, | ||
| String.class, int.class, CachedServerIcon.class); | ||
| } | ||
|
|
||
| /** | ||
| * @return if this class has a constructor with the specified arguments | ||
| */ | ||
| @Nullable | ||
| private static <T> Constructor<T> getConstructor(Class<T> clazz, Class<?>... args) { | ||
| try { | ||
| return clazz.getConstructor(args); | ||
| } catch (NoSuchMethodException e) { | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| private ReflectedNames() { | ||
| } | ||
| } |