mirror of
https://github.com/PaperMC/Paper.git
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0976d52bbd
Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Please note that this build includes changes to meet upstreams requirements for nullability annotations. While we aim for a level of accuracy, these might not be 100% correct, if there are any issues, please speak to us on discord, or open an issue on the tracker to discuss. Bukkit Changes: 9a6a1de3 Remove nullability annotations from enum constructors 3f0591ea SPIGOT-2540: Add nullability annotations to entire Bukkit API CraftBukkit Changes:8d8475fcSPIGOT-4666: Force parameter in HumanEntity#sleep8b1588e2Fix ExplosionPrimeEvent#setFire not working with EnderCrystals39a287b7Don't ignore newlines in PlayerListHeader/Footer Spigot Changes: cf694d87 Add nullability annotations
373 lines
11 KiB
Diff
373 lines
11 KiB
Diff
From 0b00d6b950008cb1c68ae0758344a9e270ae766a Mon Sep 17 00:00:00 2001
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From: Minecrell <minecrell@minecrell.net>
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Date: Wed, 11 Oct 2017 15:55:38 +0200
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Subject: [PATCH] Add extended PaperServerListPingEvent
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Add a new event that extends the original ServerListPingEvent
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and allows full control of the response sent to the client.
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diff --git a/src/main/java/com/destroystokyo/paper/event/server/PaperServerListPingEvent.java b/src/main/java/com/destroystokyo/paper/event/server/PaperServerListPingEvent.java
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new file mode 100644
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index 000000000..0cc5dd573
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/event/server/PaperServerListPingEvent.java
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@@ -0,0 +1,323 @@
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+package com.destroystokyo.paper.event.server;
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+
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+import static java.util.Objects.requireNonNull;
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+
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+import com.destroystokyo.paper.network.StatusClient;
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+import com.destroystokyo.paper.profile.PlayerProfile;
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+import org.bukkit.Bukkit;
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+import org.bukkit.entity.Player;
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+import org.bukkit.event.Cancellable;
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+import org.bukkit.event.server.ServerListPingEvent;
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+import org.bukkit.util.CachedServerIcon;
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+
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+import java.util.ArrayList;
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+import java.util.Iterator;
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+import java.util.List;
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+import java.util.NoSuchElementException;
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+import java.util.UUID;
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+
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+import org.jetbrains.annotations.NotNull;
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+import org.jetbrains.annotations.Nullable;
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+
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+/**
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+ * Extended version of {@link ServerListPingEvent} that allows full control
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+ * of the response sent to the client.
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+ */
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+public class PaperServerListPingEvent extends ServerListPingEvent implements Cancellable {
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+
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+ @NotNull private final StatusClient client;
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+
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+ private int numPlayers;
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+ private boolean hidePlayers;
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+ @NotNull private final List<PlayerProfile> playerSample = new ArrayList<>();
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+
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+ @NotNull private String version;
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+ private int protocolVersion;
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+
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+ @Nullable private CachedServerIcon favicon;
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+
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+ private boolean cancelled;
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+
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+ private boolean originalPlayerCount = true;
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+ private Object[] players;
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+
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+ public PaperServerListPingEvent(@NotNull StatusClient client, @NotNull String motd, int numPlayers, int maxPlayers,
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+ @NotNull String version, int protocolVersion, @Nullable CachedServerIcon favicon) {
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+ super(client.getAddress().getAddress(), motd, numPlayers, maxPlayers);
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+ this.client = client;
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+ this.numPlayers = numPlayers;
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+ this.version = version;
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+ this.protocolVersion = protocolVersion;
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+ setServerIcon(favicon);
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+ }
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+
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+ /**
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+ * Returns the {@link StatusClient} pinging the server.
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+ *
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+ * @return The client
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+ */
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+ @NotNull
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+ public StatusClient getClient() {
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+ return this.client;
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+ }
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+
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+ /**
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+ * {@inheritDoc}
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+ *
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+ * <p>Returns {@code -1} if players are hidden using
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+ * {@link #shouldHidePlayers()}.</p>
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+ */
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+ @Override
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+ public int getNumPlayers() {
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+ if (this.hidePlayers) {
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+ return -1;
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+ }
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+
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+ return this.numPlayers;
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+ }
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+
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+ /**
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+ * Sets the number of players displayed in the server list.
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+ *
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+ * <p>Note that this won't have any effect if {@link #shouldHidePlayers()}
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+ * is enabled.</p>
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+ *
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+ * @param numPlayers The number of online players
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+ */
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+ public void setNumPlayers(int numPlayers) {
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+ if (this.numPlayers != numPlayers) {
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+ this.numPlayers = numPlayers;
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+ this.originalPlayerCount = false;
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+ }
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+ }
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+
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+ /**
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+ * {@inheritDoc}
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+ *
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+ * <p>Returns {@code -1} if players are hidden using
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+ * {@link #shouldHidePlayers()}.</p>
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+ */
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+ @Override
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+ public int getMaxPlayers() {
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+ if (this.hidePlayers) {
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+ return -1;
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+ }
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+
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+ return super.getMaxPlayers();
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+ }
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+
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+ /**
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+ * Returns whether all player related information is hidden in the server
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+ * list. This will cause {@link #getNumPlayers()}, {@link #getMaxPlayers()}
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+ * and {@link #getPlayerSample()} to be skipped in the response.
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+ *
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+ * <p>The Vanilla Minecraft client will display the player count as {@code ???}
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+ * when this option is enabled.</p>
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+ *
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+ * @return {@code true} if the player count is hidden
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+ */
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+ public boolean shouldHidePlayers() {
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+ return hidePlayers;
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+ }
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+
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+ /**
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+ * Sets whether all player related information is hidden in the server
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+ * list. This will cause {@link #getNumPlayers()}, {@link #getMaxPlayers()}
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+ * and {@link #getPlayerSample()} to be skipped in the response.
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+ *
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+ * <p>The Vanilla Minecraft client will display the player count as {@code ???}
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+ * when this option is enabled.</p>
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+ *
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+ * @param hidePlayers {@code true} if the player count should be hidden
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+ */
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+ public void setHidePlayers(boolean hidePlayers) {
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+ this.hidePlayers = hidePlayers;
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+ }
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+
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+ /**
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+ * Returns a mutable list of {@link PlayerProfile} that will be displayed
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+ * as online players on the client.
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+ *
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+ * <p>The Vanilla Minecraft client will display them when hovering the
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+ * player count with the mouse.</p>
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+ *
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+ * @return The mutable player sample list
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+ */
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+ @NotNull
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+ public List<PlayerProfile> getPlayerSample() {
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+ return this.playerSample;
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+ }
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+
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+ /**
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+ * Returns the version that will be sent as server version on the client.
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+ *
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+ * @return The server version
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+ */
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+ @NotNull
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+ public String getVersion() {
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+ return version;
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+ }
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+
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+ /**
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+ * Sets the version that will be sent as server version to the client.
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+ *
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+ * @param version The server version
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+ */
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+ public void setVersion(@NotNull String version) {
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+ this.version = requireNonNull(version, "version");
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+ }
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+
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+ /**
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+ * Returns the protocol version that will be sent as the protocol version
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+ * of the server to the client.
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+ *
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+ * @return The protocol version of the server, or {@code -1} if the server
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+ * has not finished initialization yet
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+ */
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+ public int getProtocolVersion() {
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+ return protocolVersion;
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+ }
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+
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+ /**
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+ * Sets the protocol version that will be sent as the protocol version
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+ * of the server to the client.
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+ *
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+ * @param protocolVersion The protocol version of the server
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+ */
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+ public void setProtocolVersion(int protocolVersion) {
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+ this.protocolVersion = protocolVersion;
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+ }
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+
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+ /**
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+ * Gets the server icon sent to the client.
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+ *
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+ * @return The icon to send to the client, or {@code null} for none
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+ */
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+ @Nullable
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+ public CachedServerIcon getServerIcon() {
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+ return this.favicon;
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+ }
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+
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+ /**
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+ * Sets the server icon sent to the client.
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+ *
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+ * @param icon The icon to send to the client, or {@code null} for none
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+ */
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+ @Override
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+ public void setServerIcon(@Nullable CachedServerIcon icon) {
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+ if (icon != null && icon.isEmpty()) {
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+ // Represent empty icons as null
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+ icon = null;
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+ }
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+
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+ this.favicon = icon;
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+ }
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+
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+ /**
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+ * {@inheritDoc}
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+ *
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+ * <p>Cancelling this event will cause the connection to be closed immediately,
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+ * without sending a response to the client.</p>
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+ */
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+ @Override
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+ public boolean isCancelled() {
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+ return this.cancelled;
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+ }
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+
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+ /**
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+ * {@inheritDoc}
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+ *
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+ * <p>Cancelling this event will cause the connection to be closed immediately,
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+ * without sending a response to the client.</p>
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+ */
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+ @Override
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+ public void setCancelled(boolean cancel) {
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+ this.cancelled = cancel;
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+ }
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+
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+ /**
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+ * {@inheritDoc}
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+ *
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+ * <p><b>Note:</b> For compatibility reasons, this method will return all
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+ * online players, not just the ones referenced in {@link #getPlayerSample()}.
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+ * Removing a player will:</p>
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+ *
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+ * <ul>
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+ * <li>Decrement the online player count (if and only if) the player
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+ * count wasn't changed by another plugin before.</li>
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+ * <li>Remove all entries from {@link #getPlayerSample()} that refer to
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+ * the removed player (based on their {@link UUID}).</li>
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+ * </ul>
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+ */
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+ @NotNull
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+ @Override
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+ public Iterator<Player> iterator() {
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+ if (this.players == null) {
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+ this.players = getOnlinePlayers();
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+ }
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+
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+ return new PlayerIterator();
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+ }
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+
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+ @NotNull
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+ protected Object[] getOnlinePlayers() {
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+ return Bukkit.getOnlinePlayers().toArray();
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+ }
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+
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+ @NotNull
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+ protected Player getBukkitPlayer(@NotNull Object player) {
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+ return (Player) player;
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+ }
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+
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+ private final class PlayerIterator implements Iterator<Player> {
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+
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+ private int next;
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+ private int current;
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+ @Nullable private Player player;
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+
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+ @Override
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+ public boolean hasNext() {
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+ for (; this.next < players.length; this.next++) {
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+ if (players[this.next] != null) {
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+ return true;
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+ }
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+ }
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+
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+ return false;
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+ }
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+
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+ @NotNull
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+ @Override
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+ public Player next() {
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+ if (!hasNext()) {
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+ this.player = null;
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+ throw new NoSuchElementException();
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+ }
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+
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+ this.current = this.next++;
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+ return this.player = getBukkitPlayer(players[this.current]);
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+ }
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+
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+ @Override
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+ public void remove() {
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+ if (this.player == null) {
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+ throw new IllegalStateException();
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+ }
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+
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+ UUID uniqueId = this.player.getUniqueId();
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+ this.player = null;
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+
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+ // Remove player from iterator
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+ players[this.current] = null;
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+
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+ // Remove player from sample
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+ getPlayerSample().removeIf(p -> uniqueId.equals(p.getId()));
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+
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+ // Decrement player count
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+ if (originalPlayerCount) {
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+ numPlayers--;
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+ }
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+ }
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+ }
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+
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+}
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diff --git a/src/main/java/com/destroystokyo/paper/network/StatusClient.java b/src/main/java/com/destroystokyo/paper/network/StatusClient.java
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new file mode 100644
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index 000000000..517d15238
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--- /dev/null
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+++ b/src/main/java/com/destroystokyo/paper/network/StatusClient.java
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@@ -0,0 +1,13 @@
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+package com.destroystokyo.paper.network;
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+
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+import com.destroystokyo.paper.event.server.PaperServerListPingEvent;
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+
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+/**
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+ * Represents a client requesting the current status from the server (e.g. from
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+ * the server list).
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+ *
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+ * @see PaperServerListPingEvent
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+ */
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+public interface StatusClient extends NetworkClient {
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+
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+}
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diff --git a/src/main/java/org/bukkit/util/CachedServerIcon.java b/src/main/java/org/bukkit/util/CachedServerIcon.java
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index 612958a33..bb4f7702c 100644
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--- a/src/main/java/org/bukkit/util/CachedServerIcon.java
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+++ b/src/main/java/org/bukkit/util/CachedServerIcon.java
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@@ -18,4 +18,9 @@ public interface CachedServerIcon {
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@Nullable
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public String getData(); // Paper
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+ // Paper start
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+ default boolean isEmpty() {
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+ return getData() == null;
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+ }
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+ // Paper end
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}
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--
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2.21.0
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