Use PaperServerListPingEvent when available

We need to support this or else events that exclusively use PaperServerListPingEvent will not see our call.

Fixes https://github.com/GeyserMC/Geyser/issues/3003

bootstrap/spigot/src/main/java/org/geysermc/geyser/platform/spigot/GeyserPaperPingPassthrough.java

@@ -0,0 +1,105 @@
+/*
+ * 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;
+
+import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
+import com.destroystokyo.paper.network.StatusClient;
+import com.destroystokyo.paper.profile.PlayerProfile;
+import org.bukkit.Bukkit;
+import org.geysermc.geyser.network.MinecraftProtocol;
+import org.geysermc.geyser.ping.GeyserPingInfo;
+import org.geysermc.geyser.ping.IGeyserPingPassthrough;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.net.InetSocketAddress;
+
+/**
+ * This class is used if possible, so listeners listening for PaperServerListPingEvent exclusively have their changes
+ * applied.
+ */
+public final class GeyserPaperPingPassthrough implements IGeyserPingPassthrough {
+    private final GeyserSpigotLogger logger;
+
+    public GeyserPaperPingPassthrough(GeyserSpigotLogger logger) {
+        this.logger = logger;
+    }
+
+    @Nullable
+    @Override
+    public GeyserPingInfo getPingInformation(InetSocketAddress inetSocketAddress) {
+        try {
+            // We'd rather *not* use deprecations here, but unfortunately any Adventure class would be relocated at
+            // runtime because we still have to shade in our own Adventure class. For now.
+            PaperServerListPingEvent event = new PaperServerListPingEvent(new GeyserStatusClient(inetSocketAddress),
+                    Bukkit.getMotd(), Bukkit.getOnlinePlayers().size(), Bukkit.getMaxPlayers(), Bukkit.getVersion(),
+                    MinecraftProtocol.getJavaProtocolVersion(), null);
+            Bukkit.getPluginManager().callEvent(event);
+            if (event.isCancelled()) {
+                // We have to send a ping, so not really sure what else to do here.
+                return null;
+            }
+
+            GeyserPingInfo.Players players;
+            if (event.shouldHidePlayers()) {
+                players = new GeyserPingInfo.Players(1, 0);
+            } else {
+                players = new GeyserPingInfo.Players(event.getMaxPlayers(), event.getNumPlayers());
+            }
+
+            GeyserPingInfo geyserPingInfo = new GeyserPingInfo(event.getMotd(), players,
+                    new GeyserPingInfo.Version(Bukkit.getVersion(), MinecraftProtocol.getJavaProtocolVersion()));
+
+            if (!event.shouldHidePlayers()) {
+                for (PlayerProfile profile : event.getPlayerSample()) {
+                    geyserPingInfo.getPlayerList().add(profile.getName());
+                }
+            }
+
+            return geyserPingInfo;
+        } catch (Exception e) {
+            logger.debug("Error while getting Paper ping passthrough: " + e);
+            return null;
+        }
+    }
+
+    private record GeyserStatusClient(InetSocketAddress address) implements StatusClient {
+        @Override
+        public @NotNull InetSocketAddress getAddress() {
+            return address;
+        }
+
+        @Override
+        public int getProtocolVersion() {
+            return MinecraftProtocol.getJavaProtocolVersion();
+        }
+
+        @Override
+        public @Nullable InetSocketAddress getVirtualHost() {
+            return null;
+        }
+    }
+}

bootstrap/spigot/src/main/java/org/geysermc/geyser/platform/spigot/GeyserSpigotPingPassthrough.java

@@ -30,8 +30,8 @@ import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.server.ServerListPingEvent;
 import org.bukkit.util.CachedServerIcon;
-import org.geysermc.geyser.ping.GeyserPingInfo;
 import org.geysermc.geyser.network.MinecraftProtocol;
+import org.geysermc.geyser.ping.GeyserPingInfo;
 import org.geysermc.geyser.ping.IGeyserPingPassthrough;
 
 import javax.annotation.Nonnull;

bootstrap/spigot/src/main/java/org/geysermc/geyser/platform/spigot/GeyserSpigotPlugin.java

@@ -167,8 +167,14 @@ public class GeyserSpigotPlugin extends JavaPlugin implements GeyserBootstrap {
         if (geyserConfig.isLegacyPingPassthrough()) {
             this.geyserSpigotPingPassthrough = GeyserLegacyPingPassthrough.init(geyser);
         } else {
-            this.geyserSpigotPingPassthrough = new GeyserSpigotPingPassthrough(geyserLogger);
+            try {
+                Class.forName("com.destroystokyo.paper.event.server.PaperServerListPingEvent");
+                this.geyserSpigotPingPassthrough = new GeyserPaperPingPassthrough(geyserLogger);
+            } catch (ClassNotFoundException e) {
+                this.geyserSpigotPingPassthrough = new GeyserSpigotPingPassthrough(geyserLogger);
+            }
         }
+        geyserLogger.debug("Spigot ping passthrough type: " + (this.geyserSpigotPingPassthrough == null ? null : this.geyserSpigotPingPassthrough.getClass()));
 
         this.geyserCommandManager = new GeyserSpigotCommandManager(geyser);