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Paper/patches/api/0038-Add-handshake-event-to-allow-plugins-to-handle-clien.patch
2024-02-01 10:15:57 +01:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: kashike <kashike@vq.lc>
Date: Wed, 13 Apr 2016 20:20:18 -0700
Subject: [PATCH] Add handshake event to allow plugins to handle client
handshaking logic themselves
diff --git a/src/main/java/com/destroystokyo/paper/event/player/PlayerHandshakeEvent.java b/src/main/java/com/destroystokyo/paper/event/player/PlayerHandshakeEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..7c049bad187b94331f42f96833d1cf4ce03ef477
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/player/PlayerHandshakeEvent.java
@@ -0,0 +1,267 @@
+package com.destroystokyo.paper.event.player;
+
+import com.google.common.base.Preconditions;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+
+/**
+ * This event is fired during a player handshake.
+ * <p>
+ * If there are no listeners listening to this event, the logic default
+ * to your server platform will be run.
+ *
+ * <p>WARNING: TAMPERING WITH THIS EVENT CAN BE DANGEROUS</p>
+ */
+public class PlayerHandshakeEvent extends Event implements Cancellable {
+
+ private static final HandlerList HANDLER_LIST = new HandlerList();
+
+ @NotNull private final String originalHandshake;
+ @NotNull private final String originalSocketAddressHostname;
+ @Nullable private String serverHostname;
+ @Nullable private String socketAddressHostname;
+ @Nullable private UUID uniqueId;
+ @Nullable private String propertiesJson;
+ private boolean failed;
+ private Component failMessage = Component.text("If you wish to use IP forwarding, please enable it in your BungeeCord config as well!", NamedTextColor.YELLOW);
+
+ private boolean cancelled;
+
+ @Deprecated
+ @ApiStatus.Internal
+ public PlayerHandshakeEvent(@NotNull String originalHandshake, boolean cancelled) {
+ this(originalHandshake, "127.0.0.1", cancelled);
+ }
+
+ @ApiStatus.Internal
+ public PlayerHandshakeEvent(@NotNull String originalHandshake, @NotNull String originalSocketAddressHostname, boolean cancelled) {
+ super(true);
+ this.originalHandshake = originalHandshake;
+ this.originalSocketAddressHostname = originalSocketAddressHostname;
+ this.cancelled = cancelled;
+ }
+
+ /**
+ * Determines if this event is cancelled.
+ * <p>
+ * When this event is cancelled, custom handshake logic will not
+ * be processed.
+ *
+ * @return {@code true} if this event is cancelled, {@code false} otherwise
+ */
+ @Override
+ public boolean isCancelled() {
+ return this.cancelled;
+ }
+
+ /**
+ * Sets if this event is cancelled.
+ * <p>
+ * When this event is cancelled, custom handshake logic will not
+ * be processed.
+ *
+ * @param cancel {@code true} if this event is cancelled, {@code false} otherwise
+ */
+ @Override
+ public void setCancelled(boolean cancel) {
+ this.cancelled = cancel;
+ }
+
+ /**
+ * Gets the original handshake string.
+ *
+ * @return the original handshake string
+ */
+ @NotNull
+ public String getOriginalHandshake() {
+ return this.originalHandshake;
+ }
+
+ /**
+ * Gets the original socket address hostname.
+ *
+ * <p>This does not include the port.</p>
+ * <p>In cases where this event is manually fired and the plugin wasn't updated yet, the default is {@code "127.0.0.1"}.</p>
+ *
+ * @return the original socket address hostname
+ */
+ @NotNull
+ public String getOriginalSocketAddressHostname() {
+ return this.originalSocketAddressHostname;
+ }
+
+ /**
+ * Gets the server hostname string.
+ *
+ * <p>This should not include the port.</p>
+ *
+ * @return the server hostname string
+ */
+ @Nullable
+ public String getServerHostname() {
+ return this.serverHostname;
+ }
+
+ /**
+ * Sets the server hostname string.
+ *
+ * <p>This should not include the port.</p>
+ *
+ * @param serverHostname the server hostname string
+ */
+ public void setServerHostname(@NotNull String serverHostname) {
+ this.serverHostname = serverHostname;
+ }
+
+ /**
+ * Gets the socket address hostname string.
+ *
+ * <p>This should not include the port.</p>
+ *
+ * @return the socket address hostname string
+ */
+ @Nullable
+ public String getSocketAddressHostname() {
+ return this.socketAddressHostname;
+ }
+
+ /**
+ * Sets the socket address hostname string.
+ *
+ * <p>This should not include the port.</p>
+ *
+ * @param socketAddressHostname the socket address hostname string
+ */
+ public void setSocketAddressHostname(@NotNull String socketAddressHostname) {
+ this.socketAddressHostname = socketAddressHostname;
+ }
+
+ /**
+ * Gets the unique id.
+ *
+ * @return the unique id
+ */
+ @Nullable
+ public UUID getUniqueId() {
+ return this.uniqueId;
+ }
+
+ /**
+ * Sets the unique id.
+ *
+ * @param uniqueId the unique id
+ */
+ public void setUniqueId(@NotNull UUID uniqueId) {
+ this.uniqueId = uniqueId;
+ }
+
+ /**
+ * Gets the profile properties.
+ *
+ * <p>This should be a valid JSON string.</p>
+ *
+ * @return the profile properties, as JSON
+ */
+ @Nullable
+ public String getPropertiesJson() {
+ return this.propertiesJson;
+ }
+
+ /**
+ * Determines if authentication failed.
+ * <p>
+ * When {@code true}, the client connecting will be disconnected
+ * with the {@link #getFailMessage() fail message}.
+ *
+ * @return {@code true} if authentication failed, {@code false} otherwise
+ */
+ public boolean isFailed() {
+ return this.failed;
+ }
+
+ /**
+ * Sets if authentication failed and the client should be disconnected.
+ * <p>
+ * When {@code true}, the client connecting will be disconnected
+ * with the {@link #getFailMessage() fail message}.
+ *
+ * @param failed {@code true} if authentication failed, {@code false} otherwise
+ */
+ public void setFailed(boolean failed) {
+ this.failed = failed;
+ }
+
+ /**
+ * Sets the profile properties.
+ *
+ * <p>This should be a valid JSON string.</p>
+ *
+ * @param propertiesJson the profile properties, as JSON
+ */
+ public void setPropertiesJson(@NotNull String propertiesJson) {
+ this.propertiesJson = propertiesJson;
+ }
+
+ /**
+ * Gets the message to display to the client when authentication fails.
+ *
+ * @return the message to display to the client
+ */
+ @NotNull
+ public Component failMessage() {
+ return this.failMessage;
+ }
+
+ /**
+ * Sets the message to display to the client when authentication fails.
+ *
+ * @param failMessage the message to display to the client
+ */
+ public void failMessage(@NotNull Component failMessage) {
+ this.failMessage = failMessage;
+ }
+
+ /**
+ * Gets the message to display to the client when authentication fails.
+ *
+ * @return the message to display to the client
+ * @deprecated use {@link #failMessage()}
+ */
+ @NotNull
+ @Deprecated
+ public String getFailMessage() {
+ return LegacyComponentSerializer.legacySection().serialize(this.failMessage());
+ }
+
+ /**
+ * Sets the message to display to the client when authentication fails.
+ *
+ * @param failMessage the message to display to the client
+ * @deprecated use {@link #failMessage(Component)}
+ */
+ @Deprecated
+ public void setFailMessage(@NotNull String failMessage) {
+ Preconditions.checkArgument(failMessage != null && !failMessage.isEmpty(), "fail message cannot be null or empty");
+ this.failMessage(LegacyComponentSerializer.legacySection().deserialize(failMessage));
+ }
+
+ @NotNull
+ @Override
+ public HandlerList getHandlers() {
+ return HANDLER_LIST;
+ }
+
+ @NotNull
+ public static HandlerList getHandlerList() {
+ return HANDLER_LIST;
+ }
+}