Merge remote-tracking branch 'upstream/dev/3.0.0'

# Conflicts:
#	proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java

api/src/ap/java/com/velocitypowered/api/plugin/ap/SerializedPluginDescription.java

@@ -24,7 +24,8 @@ import org.checkerframework.checker.nullness.qual.Nullable;
  */
 public final class SerializedPluginDescription {
 
-  public static final Pattern ID_PATTERN = Pattern.compile("[a-z][a-z0-9-_]{0,63}");
+  public static final String ID_PATTERN_STRING = "[a-z][a-z0-9-_]{0,63}";
+  public static final Pattern ID_PATTERN = Pattern.compile(ID_PATTERN_STRING);
 
   // @Nullable is used here to make GSON skip these in the serialized file
   private final String id;

api/src/main/java/com/velocitypowered/api/command/CommandSource.java

@@ -23,7 +23,7 @@ public interface CommandSource extends Audience, PermissionSubject {
    * Sends a message with the MiniMessage format to this source.
    *
    * @param message MiniMessage content
-   * @see <a href="https://docs.advntr.dev/minimessage/format.html">MiniMessage docs</a>
+   * @see <a href="https://docs.papermc.io/adventure/minimessage/format/">MiniMessage docs</a>
    *      for more information on the format.
    **/
   default void sendRichMessage(final @NotNull String message) {
@@ -31,14 +31,14 @@ public interface CommandSource extends Audience, PermissionSubject {
   }
 
   /**
-  * Sends a message with the MiniMessage format to this source.
-  *
-  * @param message MiniMessage content
-  * @param resolvers resolvers to use
-  * @see <a href="https://docs.advntr.dev/minimessage/">MiniMessage docs</a>
-  *     and <a href="https://docs.advntr.dev/minimessage/dynamic-replacements">MiniMessage Placeholders docs</a>
-  *     for more information on the format.
-  **/
+   * Sends a message with the MiniMessage format to this source.
+   *
+   * @param message MiniMessage content
+   * @param resolvers resolvers to use
+   * @see <a href="https://docs.papermc.io/adventure/minimessage/">MiniMessage docs</a>
+   *     and <a href="https://docs.papermc.io/adventure/minimessage/dynamic-replacements">MiniMessage Placeholders docs</a>
+   *     for more information on the format.
+   */
   default void sendRichMessage(
           final @NotNull String message,
           final @NotNull TagResolver @NotNull... resolvers

api/src/main/java/com/velocitypowered/api/event/connection/LoginEvent.java

@@ -11,6 +11,7 @@ import com.google.common.base.Preconditions;
 import com.velocitypowered.api.event.ResultedEvent;
 import com.velocitypowered.api.event.annotation.AwaitingEvent;
 import com.velocitypowered.api.proxy.Player;
+import org.checkerframework.checker.nullness.qual.Nullable;
 
 /**
  * This event is fired once the player has been authenticated, but before they connect to a server.
@@ -22,10 +23,24 @@ import com.velocitypowered.api.proxy.Player;
 public final class LoginEvent implements ResultedEvent<ResultedEvent.ComponentResult> {
 
   private final Player player;
+  private final String serverIdHash;
   private ComponentResult result;
 
+  @Deprecated(forRemoval = true)
   public LoginEvent(Player player) {
+    this(player, null);
+  }
+
+  /**
+   * Constructs a new {@link LoginEvent}.
+   *
+   * @param player the player who has completed authentication
+   * @param serverIdHash the server ID hash sent to Mojang for authentication,
+   *                     or {@code null} if the connection is in offline-mode
+   */
+  public LoginEvent(Player player, @Nullable String serverIdHash) {
     this.player = Preconditions.checkNotNull(player, "player");
+    this.serverIdHash = serverIdHash;
     this.result = ComponentResult.allowed();
   }
 
@@ -33,6 +48,16 @@ public final class LoginEvent implements ResultedEvent<ResultedEvent.ComponentRe
     return player;
   }
 
+  /**
+   * Returns the server ID hash that was sent to Mojang to authenticate the player.
+   * If the connection was in offline-mode, this returns {@code null}.
+   *
+   * @return the server ID hash that was sent to Mojang to authenticate the player
+   */
+  public @Nullable String getServerIdHash() {
+    return serverIdHash;
+  }
+
   @Override
   public ComponentResult getResult() {
     return result;

api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelUnregisterEvent.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2025 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
+package com.velocitypowered.api.event.player;
+
+import com.google.common.base.Preconditions;
+import com.velocitypowered.api.proxy.Player;
+import com.velocitypowered.api.proxy.messages.ChannelIdentifier;
+import java.util.List;
+
+/**
+ * This event is fired when a client ({@link Player}) sends a plugin message through the
+ * unregister channel. Velocity will not wait on this event to finish firing.
+ */
+public final class PlayerChannelUnregisterEvent {
+
+  private final Player player;
+  private final List<ChannelIdentifier> channels;
+
+  public PlayerChannelUnregisterEvent(Player player, List<ChannelIdentifier> channels) {
+    this.player = Preconditions.checkNotNull(player, "player");
+    this.channels = Preconditions.checkNotNull(channels, "channels");
+  }
+
+  public Player getPlayer() {
+    return player;
+  }
+
+  public List<ChannelIdentifier> getChannels() {
+    return channels;
+  }
+
+  @Override
+  public String toString() {
+    return "PlayerChannelUnregisterEvent{"
+            + "player=" + player
+            + ", channels=" + channels
+            + '}';
+  }
+}

api/src/main/java/com/velocitypowered/api/event/player/ServerPreConnectEvent.java

@@ -143,7 +143,7 @@ public final class ServerPreConnectEvent implements
      * is used, then {@link ConnectionRequestBuilder#connect()}'s result will have the status
      * {@link Status#CONNECTION_CANCELLED}.
      *
-     * @return a result to deny conneections
+     * @return a result to deny connections
      */
     public static ServerResult denied() {
       return DENIED;

api/src/main/java/com/velocitypowered/api/network/ProtocolVersion.java

@@ -93,7 +93,9 @@ public enum ProtocolVersion implements Ordered<ProtocolVersion> {
   MINECRAFT_1_21_5(770, "1.21.5"),
   MINECRAFT_1_21_6(771, "1.21.6"),
   MINECRAFT_1_21_7(772, "1.21.7", "1.21.8"),
-  MINECRAFT_1_21_9(773, "1.21.9", "1.21.10");
+  MINECRAFT_1_21_9(773, "1.21.9", "1.21.10"),
+  MINECRAFT_1_21_11(774, "1.21.11"),
+  MINECRAFT_26_1(775, "26.1", "26.1.1", "26.1.2");
 
   private static final int SNAPSHOT_BIT = 30;
 

api/src/main/java/com/velocitypowered/api/plugin/Dependency.java

@@ -7,9 +7,11 @@
 
 package com.velocitypowered.api.plugin;
 
+import com.velocitypowered.api.plugin.ap.SerializedPluginDescription;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import org.intellij.lang.annotations.Pattern;
 
 /**
  * Indicates that the {@link Plugin} depends on another plugin in order to enable.
@@ -24,6 +26,7 @@ public @interface Dependency {
    * @return The dependency plugin ID
    * @see Plugin#id()
    */
+  @Pattern(SerializedPluginDescription.ID_PATTERN_STRING)
   String id();
 
   /**

api/src/main/java/com/velocitypowered/api/plugin/Plugin.java

@@ -7,10 +7,12 @@
 
 package com.velocitypowered.api.plugin;
 
+import com.velocitypowered.api.plugin.ap.SerializedPluginDescription;
 import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import org.intellij.lang.annotations.Pattern;
 
 /**
  * Annotation used to describe a Velocity plugin.
@@ -26,6 +28,7 @@ public @interface Plugin {
    *
    * @return the ID for this plugin
    */
+  @Pattern(SerializedPluginDescription.ID_PATTERN_STRING)
   String id();
 
   /**

api/src/main/java/com/velocitypowered/api/proxy/Player.java

@@ -39,6 +39,7 @@ import net.kyori.adventure.sound.SoundStop;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.event.HoverEvent;
 import net.kyori.adventure.text.event.HoverEventSource;
+import net.kyori.adventure.text.object.PlayerHeadObjectContents;
 import org.checkerframework.checker.nullness.qual.Nullable;
 import org.jetbrains.annotations.NotNull;
 
@@ -49,7 +50,8 @@ public interface Player extends
     /* Fundamental Velocity interfaces */
     CommandSource, InboundConnection, ChannelMessageSource, ChannelMessageSink,
     /* Adventure-specific interfaces */
-    Identified, HoverEventSource<HoverEvent.ShowEntity>, Keyed, KeyIdentifiable, Sound.Emitter {
+    Identified, HoverEventSource<HoverEvent.ShowEntity>, Keyed, KeyIdentifiable, Sound.Emitter,
+    PlayerHeadObjectContents.SkinSource {
 
   /**
    * Returns the player's current username.
@@ -336,6 +338,15 @@ public interface Player extends
             Component.text(getUsername()))));
   }
 
+  @SuppressWarnings("UnstableApiUsage") // permitted implementation
+  @Override
+  default void applySkinToPlayerHeadContents(
+      final PlayerHeadObjectContents.@NotNull Builder builder) {
+    builder.skin(this.getGameProfile());
+    if (this.hasSentPlayerSettings()) {
+      builder.hat(this.getPlayerSettings().getSkinParts().hasHat());
+    }
+  }
 
   /**
    * Gets the player's client brand.

api/src/main/java/com/velocitypowered/api/util/GameProfile.java

@@ -11,11 +11,14 @@ import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import java.util.List;
 import java.util.UUID;
+import java.util.stream.Collectors;
+import net.kyori.adventure.text.object.PlayerHeadObjectContents;
+import org.jetbrains.annotations.NotNull;
 
 /**
  * Represents a Mojang game profile. This class is immutable.
  */
-public final class GameProfile {
+public final class GameProfile implements PlayerHeadObjectContents.SkinSource {
 
   private final UUID id;
   private final String undashedId;
@@ -169,6 +172,23 @@ public final class GameProfile {
         ImmutableList.of());
   }
 
+  @SuppressWarnings("UnstableApiUsage") // permitted implementation
+  @Override
+  public void applySkinToPlayerHeadContents(
+      final PlayerHeadObjectContents.@NotNull Builder builder) {
+    if (this.properties.isEmpty()) {
+      builder.id(this.id);
+      return;
+    }
+
+    builder.id(this.id)
+        .name(this.name)
+        .profileProperties(this.properties.stream()
+            .map(property -> PlayerHeadObjectContents.property(property.getName(),
+                property.getValue(), property.getSignature()))
+            .collect(Collectors.toList()));
+  }
+
   @Override
   public String toString() {
     return "GameProfile{"