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-rw-r--r--patches/server/0176-Implement-extended-PaperServerListPingEvent.patch241
1 files changed, 241 insertions, 0 deletions
diff --git a/patches/server/0176-Implement-extended-PaperServerListPingEvent.patch b/patches/server/0176-Implement-extended-PaperServerListPingEvent.patch
new file mode 100644
index 0000000000..4373d2086a
--- /dev/null
+++ b/patches/server/0176-Implement-extended-PaperServerListPingEvent.patch
@@ -0,0 +1,241 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Minecrell <[email protected]>
+Date: Wed, 11 Oct 2017 15:56:26 +0200
+Subject: [PATCH] Implement extended PaperServerListPingEvent
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/network/PaperServerListPingEventImpl.java b/src/main/java/com/destroystokyo/paper/network/PaperServerListPingEventImpl.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..6ed2114f577ce12d2d493985e798609c7d83f15e
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/network/PaperServerListPingEventImpl.java
+@@ -0,0 +1,31 @@
++package com.destroystokyo.paper.network;
++
++import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
++import net.minecraft.server.MinecraftServer;
++import net.minecraft.server.level.ServerPlayer;
++import org.bukkit.entity.Player;
++import org.bukkit.util.CachedServerIcon;
++
++import javax.annotation.Nullable;
++
++class PaperServerListPingEventImpl extends PaperServerListPingEvent {
++
++ private final MinecraftServer server;
++
++ PaperServerListPingEventImpl(MinecraftServer server, StatusClient client, int protocolVersion, @Nullable CachedServerIcon icon) {
++ super(client, server.motd(), server.getPlayerCount(), server.getMaxPlayers(),
++ server.getServerModName() + ' ' + server.getServerVersion(), protocolVersion, icon);
++ this.server = server;
++ }
++
++ @Override
++ protected final Object[] getOnlinePlayers() {
++ return this.server.getPlayerList().players.toArray();
++ }
++
++ @Override
++ protected final Player getBukkitPlayer(Object player) {
++ return ((ServerPlayer) player).getBukkitEntity();
++ }
++
++}
+diff --git a/src/main/java/com/destroystokyo/paper/network/PaperStatusClient.java b/src/main/java/com/destroystokyo/paper/network/PaperStatusClient.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..d926ad804355ee2fdc5910b2505e8671602acdab
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/network/PaperStatusClient.java
+@@ -0,0 +1,11 @@
++package com.destroystokyo.paper.network;
++
++import net.minecraft.network.Connection;
++
++class PaperStatusClient extends PaperNetworkClient implements StatusClient {
++
++ PaperStatusClient(Connection networkManager) {
++ super(networkManager);
++ }
++
++}
+diff --git a/src/main/java/com/destroystokyo/paper/network/StandardPaperServerListPingEventImpl.java b/src/main/java/com/destroystokyo/paper/network/StandardPaperServerListPingEventImpl.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..6b0bdc266109cdfb874f08bf74323603921d2260
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/network/StandardPaperServerListPingEventImpl.java
+@@ -0,0 +1,116 @@
++package com.destroystokyo.paper.network;
++
++import com.destroystokyo.paper.profile.CraftPlayerProfile;
++import com.destroystokyo.paper.profile.PlayerProfile;
++import com.google.common.base.MoreObjects;
++import com.google.common.base.Strings;
++import com.mojang.authlib.GameProfile;
++import io.papermc.paper.adventure.AdventureComponent;
++import java.util.ArrayList;
++import java.util.Collections;
++import java.util.List;
++import java.util.Optional;
++import java.util.UUID;
++import javax.annotation.Nonnull;
++import net.minecraft.network.Connection;
++import net.minecraft.network.chat.Component;
++import net.minecraft.network.protocol.status.ClientboundStatusResponsePacket;
++import net.minecraft.network.protocol.status.ServerStatus;
++import net.minecraft.server.MinecraftServer;
++import org.bukkit.craftbukkit.util.CraftIconCache;
++
++public final class StandardPaperServerListPingEventImpl extends PaperServerListPingEventImpl {
++
++ // private static final GameProfile[] EMPTY_PROFILES = new GameProfile[0];
++ private static final UUID FAKE_UUID = new UUID(0, 0);
++
++ private List<GameProfile> originalSample;
++
++ private StandardPaperServerListPingEventImpl(MinecraftServer server, Connection networkManager, ServerStatus ping) {
++ super(server, new PaperStatusClient(networkManager), ping.version().map(ServerStatus.Version::protocol).orElse(-1), server.server.getServerIcon());
++ this.originalSample = ping.players().map(ServerStatus.Players::sample).orElse(null); // GH-1473 - pre-tick race condition NPE
++ }
++
++ @Nonnull
++ @Override
++ public List<PlayerProfile> getPlayerSample() {
++ List<PlayerProfile> sample = super.getPlayerSample();
++
++ if (this.originalSample != null) {
++ for (GameProfile profile : this.originalSample) {
++ sample.add(CraftPlayerProfile.asBukkitCopy(profile));
++ }
++ this.originalSample = null;
++ }
++
++ return sample;
++ }
++
++ private List<GameProfile> getPlayerSampleHandle() {
++ if (this.originalSample != null) {
++ return this.originalSample;
++ }
++
++ List<PlayerProfile> entries = super.getPlayerSample();
++ if (entries.isEmpty()) {
++ return Collections.emptyList();
++ }
++
++ final List<GameProfile> profiles = new ArrayList<>();
++ for (PlayerProfile profile : entries) {
++ /*
++ * Avoid null UUIDs/names since that will make the response invalid
++ * on the client.
++ * Instead, fall back to a fake/empty UUID and an empty string as name.
++ * This can be used to create custom lines in the player list that do not
++ * refer to a specific player.
++ */
++ if (profile.getId() != null && profile.getName() != null) {
++ profiles.add(CraftPlayerProfile.asAuthlib(profile));
++ } else {
++ profiles.add(new GameProfile(MoreObjects.firstNonNull(profile.getId(), FAKE_UUID), Strings.nullToEmpty(profile.getName())));
++ }
++ }
++ return profiles;
++ }
++
++ public static void processRequest(MinecraftServer server, Connection networkManager) {
++ StandardPaperServerListPingEventImpl event = new StandardPaperServerListPingEventImpl(server, networkManager, server.getStatus());
++ server.server.getPluginManager().callEvent(event);
++
++ // Close connection immediately if event is cancelled
++ if (event.isCancelled()) {
++ networkManager.disconnect(null);
++ return;
++ }
++
++ // Setup response
++
++ // Description
++ final Component description = new AdventureComponent(event.motd());
++
++ // Players
++ final Optional<ServerStatus.Players> players;
++ if (!event.shouldHidePlayers()) {
++ players = Optional.of(new ServerStatus.Players(event.getMaxPlayers(), event.getNumPlayers(), event.getPlayerSampleHandle()));
++ } else {
++ players = Optional.empty();
++ }
++
++ // Version
++ final ServerStatus.Version version = new ServerStatus.Version(event.getVersion(), event.getProtocolVersion());
++
++ // Favicon
++ final Optional<ServerStatus.Favicon> favicon;
++ if (event.getServerIcon() != null) {
++ favicon = Optional.of(new ServerStatus.Favicon(((CraftIconCache) event.getServerIcon()).value));
++ } else {
++ favicon = Optional.empty();
++ }
++ final ServerStatus ping = new ServerStatus(description, players, Optional.of(version), favicon, server.enforceSecureProfile());
++
++ // Send response
++ networkManager.send(new ClientboundStatusResponsePacket(ping));
++ }
++
++}
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 260e364c91d8c3d774681f9f0ecba63df5dd3f5c..2ae6eb3a05bd0574143699e1286f63f5fd699f30 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -3,6 +3,9 @@ package net.minecraft.server;
+ import com.google.common.base.Preconditions;
+ import com.google.common.base.Splitter;
+ import com.google.common.collect.ImmutableList;
++import co.aikar.timings.Timings;
++import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
++import com.google.common.base.Stopwatch;
+ import com.google.common.collect.Lists;
+ import com.google.common.collect.Maps;
+ import com.google.common.collect.Sets;
+@@ -1490,7 +1493,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ if (this.hidesOnlinePlayers()) {
+ return new ServerStatus.Players(i, list.size(), List.of());
+ } else {
+- int j = Math.min(list.size(), 12);
++ int j = Math.min(list.size(), org.spigotmc.SpigotConfig.playerSample); // Paper - PaperServerListPingEvent
+ ObjectArrayList<GameProfile> objectarraylist = new ObjectArrayList(j);
+ int k = Mth.nextInt(this.random, 0, list.size() - j);
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java
+index 9e62aa13845f19faf0dc0b7b27d958626e77d96e..6f1c9fa89e718cbc01a8d72de34154f49c5f46db 100644
+--- a/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java
+@@ -48,6 +48,8 @@ public class ServerStatusPacketListenerImpl implements ServerStatusPacketListene
+ this.connection.disconnect(ServerStatusPacketListenerImpl.DISCONNECT_REASON);
+ } else {
+ this.hasRequestedStatus = true;
++ // Paper start - Replace everything
++ /*
+ // CraftBukkit start
+ // this.connection.send(new PacketStatusOutServerInfo(this.status));
+ MinecraftServer server = MinecraftServer.getServer();
+@@ -150,6 +152,9 @@ public class ServerStatusPacketListenerImpl implements ServerStatusPacketListene
+
+ this.connection.send(new ClientboundStatusResponsePacket(ping));
+ // CraftBukkit end
++ */
++ com.destroystokyo.paper.network.StandardPaperServerListPingEventImpl.processRequest(MinecraftServer.getServer(), this.connection);
++ // Paper end
+ }
+ }
+
+diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
+index 27b01f7ed930baab466a5e4f9608e9e1a4da0978..7cd1f375b9ad9e6d6f2d26661519f12be064a9d2 100644
+--- a/src/main/java/org/spigotmc/SpigotConfig.java
++++ b/src/main/java/org/spigotmc/SpigotConfig.java
+@@ -289,7 +289,7 @@ public class SpigotConfig
+ public static int playerSample;
+ private static void playerSample()
+ {
+- SpigotConfig.playerSample = SpigotConfig.getInt( "settings.sample-count", 12 );
++ SpigotConfig.playerSample = Math.max( SpigotConfig.getInt( "settings.sample-count", 12 ), 0 ); // Paper - Avoid negative counts
+ Bukkit.getLogger().log( Level.INFO, "Server Ping Player Sample Count: {0}", playerSample ); // Paper - Use logger
+ }
+