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Paper-Old/patches/server/0175-Implement-extended-PaperServerListPingEvent.patch
Nassim Jahnke 038f8d915e
Fixup and deprecate player profiles in ping event
The player sample uses game profile internally, but discards everything but the name and uuid and does not follow player profile restrictions, so it doesn't make sense to use that in the event.
2024-06-14 18:17:26 +02:00

223 Zeilen
9.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Minecrell <minecrell@minecrell.net>
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..aa2aff62c873ba85b0cbced5382398c858420e59
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/network/StandardPaperServerListPingEventImpl.java
@@ -0,0 +1,97 @@
+package com.destroystokyo.paper.network;
+
+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 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 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<ListedPlayerInfo> getListedPlayers() {
+ List<ListedPlayerInfo> sample = super.getListedPlayers();
+
+ if (this.originalSample != null) {
+ for (GameProfile profile : this.originalSample) {
+ sample.add(new ListedPlayerInfo(profile.getName(), profile.getId()));
+ }
+ this.originalSample = null;
+ }
+
+ return sample;
+ }
+
+ private List<GameProfile> getPlayerSampleHandle() {
+ if (this.originalSample != null) {
+ return this.originalSample;
+ }
+
+ List<ListedPlayerInfo> entries = super.getListedPlayers();
+ if (entries.isEmpty()) {
+ return Collections.emptyList();
+ }
+
+ final List<GameProfile> profiles = new ArrayList<>();
+ for (ListedPlayerInfo playerInfo : entries) {
+ profiles.add(new GameProfile(playerInfo.id(), playerInfo.name()));
+ }
+ 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((Component) 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 7335f9bb936eeb585ee077b0b9c461d7946d6134..1c024fb7f682c81c465f59f4ab5fbeac964d73e1 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;
@@ -1518,7 +1521,7 @@ 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 71540687b4212702cdaaad5fd4815fb3eb97ddd6..385457c7151f7e636e1ea2e38ef983f4f532b9b5 100644
--- a/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerStatusPacketListenerImpl.java
@@ -49,6 +49,8 @@ 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();
@@ -151,6 +153,9 @@ 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 ba621fdc82896245f6ce448e084847edc4d3fe08..d063d356388810fb6f0dddfbc8b5885b3e6442aa 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
}