Release 2.1.11 (#400 )

Move "FallbackTimeoutHandler" to "netty"
Bump Gradle from 8.10.1 to 8.10.2
2026-11-05 09:20:15 -05:00 · 2024-10-23 15:27:19 +02:00 · 2024-10-23 02:33:06 +02:00 · 2024-10-22 21:08:45 +02:00 · 2024-10-22 21:04:56 +02:00 · 2024-10-22 20:55:01 +02:00
236 changed files with 4556 additions and 4367 deletions
@@ -7,7 +7,7 @@ indent_size = 2
 insert_final_newline = true
 trim_trailing_whitespace = true

-[{*.java,*.kt}]
+[*.java]
 ij_java_wrap_long_lines = true

 [{*.md,*.yml}]
@@ -9,9 +9,9 @@ name: Sonar CI

 on:
  push:
-    branches: [ "main", "dev" ]
+    branches: [ "main" ]
  pull_request:
-    branches: [ "main", "dev" ]
+    branches: [ "main" ]

 permissions:
  contents: read
@@ -22,12 +22,41 @@ jobs:

    steps:
    - uses: actions/checkout@v3
+
    - name: Set up JDK 17
      uses: actions/setup-java@v3
      with:
        java-version: '17'
        distribution: 'temurin'
+
    - name: Build with Gradle
-      uses: gradle/gradle-build-action@bd5760595778326ba7f1441bcf7e88b49de61a25 # v2.6.0
+      uses: gradle/gradle-build-action@v3
      with:
        arguments: build-sonar
+
+    - name: Upload Bukkit Artifact
+      uses: actions/upload-artifact@v3.1.3
+      with:
+        # Artifact name
+        name: Sonar
+        # A file, directory or wildcard pattern that describes what to upload
+        path: bukkit/build/libs/Sonar-Bukkit.jar
+        if-no-files-found: error
+
+    - name: Upload BungeeCord Artifact
+      uses: actions/upload-artifact@v3.1.3
+      with:
+        # Artifact name
+        name: Sonar
+        # A file, directory or wildcard pattern that describes what to upload
+        path: bungeecord/build/libs/Sonar-Bungee.jar
+        if-no-files-found: error
+
+    - name: Upload Velocity Artifact
+      uses: actions/upload-artifact@v3.1.3
+      with:
+        # Artifact name
+        name: Sonar
+        # A file, directory or wildcard pattern that describes what to upload
+        path: velocity/build/libs/Sonar-Velocity.jar
+        if-no-files-found: error
@@ -9,5 +9,11 @@ dependencies {
  compileOnly(rootProject.libs.annotations)
 }

+tasks {
+  shadowJar {
+    archiveFileName = "sonar-api-${rootProject.version}.jar"
+  }
+}
+
 java.sourceCompatibility = JavaVersion.VERSION_11
 java.targetCompatibility = JavaVersion.VERSION_11
@@ -97,6 +97,6 @@ public interface Sonar {

  @NotNull
  static Sonar get() {
-    return SonarSupplier.get();
+    return SonarSupplier.sonar;
  }
 }
@@ -19,20 +19,15 @@ package xyz.jonesdev.sonar.api;

 import lombok.experimental.UtilityClass;
 import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.exception.AlreadyInitializedException;

@UtilityClass
 public class SonarSupplier {
-  private Sonar _sonar;
+  Sonar sonar;

-  public void set(final @NotNull Sonar instance) {
-    if (_sonar != null) {
-      throw new AlreadyInitializedException("Sonar is already initialized");
+  public void set(final @NotNull Sonar _sonar) {
+    if (sonar != null) {
+      throw new IllegalStateException("Sonar is already initialized");
    }
-    _sonar = instance;
-  }
-
-  public @NotNull Sonar get() {
-    return _sonar;
+    sonar = _sonar;
  }
 }
@@ -26,20 +26,19 @@ import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.command.subcommand.Subcommand;
+import xyz.jonesdev.sonar.api.update.UpdateChecker;

 import java.util.*;

-import static java.util.Collections.emptyList;
-
 public interface SonarCommand {
-  List<String> TAB_SUGGESTIONS = new ArrayList<>();
-
-  Map<String, List<String>> ARG_TAB_SUGGESTIONS = new HashMap<>();
+  Map<Integer, List<String>> TAB_SUGGESTIONS = new LinkedHashMap<>();

  default void handle(final @NotNull InvocationSource source, final String @NotNull [] args) {
    // Check if the player actually has the permission to run the command
    if (source.isPlayer() && !source.getPermissionFunction().test("sonar.command")) {
-      source.sendMessage(Sonar.get().getConfig().getNoPermission());
+      if (Sonar.get().getConfig().getNoPermission() != null) {
+        source.sendMessage(Sonar.get().getConfig().getNoPermission());
+      }
      return;
    }

@@ -66,11 +65,18 @@ public interface SonarCommand {
      // Invoke subcommand
      command.invoke(source, args);
    }, () -> {
+      final UpdateChecker.CheckResult checkResult = UpdateChecker.getLastCheckResult();
+      Component version = Component.text(Sonar.get().getVersion().getFormatted());
+      if (checkResult.getConfigKey() != null) {
+        version = version.append(MiniMessage.miniMessage().deserialize(
+          Sonar.get().getConfig().getMessagesConfig().getString("commands.main." + checkResult.getConfigKey())));
+      }
+
      // Print standard help message
      source.sendMessage(MiniMessage.miniMessage().deserialize(
        String.join("<newline>",
          Sonar.get().getConfig().getMessagesConfig().getStringList("commands.main.header")),
-        Placeholder.unparsed("version", Sonar.get().getVersion().getFormatted()),
+        Placeholder.component("version", version),
        Placeholder.unparsed("platform", Sonar.get().getPlatform().getDisplayName()),
        Placeholder.unparsed("copyright-year", String.valueOf(Calendar.getInstance().get(Calendar.YEAR)))));

@@ -94,30 +100,29 @@ public interface SonarCommand {
    });
  }

-  static void prepareCachedMessages() {
-    // Don't re-cache tab suggestions
-    if (!TAB_SUGGESTIONS.isEmpty()) return;
-    // Cache tab suggestions
-    for (final Subcommand subcommand : Sonar.get().getSubcommandRegistry().getSubcommands()) {
-      TAB_SUGGESTIONS.add(subcommand.getInfo().name());
-      if (subcommand.getInfo().aliases().length > 0) {
-        TAB_SUGGESTIONS.addAll(Arrays.asList(subcommand.getInfo().aliases()));
-      }
-      final List<String> arguments = Arrays.asList(subcommand.getInfo().arguments());
-      ARG_TAB_SUGGESTIONS.put(subcommand.getInfo().name(), arguments);
-      for (final String alias : subcommand.getInfo().aliases()) {
-        ARG_TAB_SUGGESTIONS.put(alias, arguments);
+  static void prepareCachedTabSuggestions() {
+    if (TAB_SUGGESTIONS.isEmpty()) {
+      final List<String> subcommandsAndAliases = new ArrayList<>();
+      for (final Subcommand subcommand : Sonar.get().getSubcommandRegistry().getSubcommands()) {
+        subcommandsAndAliases.add(subcommand.getInfo().name());
+
+        final List<String> arguments = Arrays.asList(subcommand.getInfo().arguments());
+        TAB_SUGGESTIONS.put(subcommand.getInfo().name().hashCode(), arguments);
+
+        for (final String alias : subcommand.getInfo().aliases()) {
+          subcommandsAndAliases.add(alias);
+          TAB_SUGGESTIONS.put(alias.hashCode(), arguments);
+        }
      }
+      TAB_SUGGESTIONS.put(-1, subcommandsAndAliases);
    }
  }

  default List<String> getCachedTabSuggestions(final String @NotNull [] arguments) {
-    if (arguments.length <= 1) {
-      return TAB_SUGGESTIONS;
-    } else if (arguments.length == 2) {
-      final String subcommandName = arguments[0].toLowerCase();
-      return ARG_TAB_SUGGESTIONS.getOrDefault(subcommandName, emptyList());
+    if (arguments.length <= 2) {
+      final int subcommandHash = arguments.length <= 1 ? -1 : arguments[0].toLowerCase().hashCode();
+      return TAB_SUGGESTIONS.getOrDefault(subcommandHash, Collections.emptyList());
    }
-    return emptyList();
+    return Collections.emptyList();
  }
 }
@@ -23,7 +23,6 @@ import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.command.CommandInvocation;
 import xyz.jonesdev.sonar.api.command.InvocationSource;

 import java.util.Objects;
@@ -91,7 +90,7 @@ public abstract class Subcommand {
    }

    // Execute the sub command from the invocation source with the given arguments
-    execute(new CommandInvocation(invocationSource, arguments));
+    execute(invocationSource, arguments);
  }

  public final @NotNull String getDescription() {
@@ -99,5 +98,5 @@ public abstract class Subcommand {
    return Objects.requireNonNull(Sonar.get().getConfig().getMessagesConfig().getString(path));
  }

-  protected abstract void execute(final @NotNull CommandInvocation invocation);
+  protected abstract void execute(final @NotNull InvocationSource source, final String @NotNull [] args);
 }
@@ -21,6 +21,7 @@ import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 import org.simpleyaml.configuration.MemorySection;
 import org.simpleyaml.configuration.file.YamlFile;
+import xyz.jonesdev.sonar.api.Sonar;

 import java.io.File;
 import java.io.InputStream;
@@ -31,8 +32,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;

-import static xyz.jonesdev.sonar.api.config.SonarConfiguration.LOGGER;
-
@Getter
 public final class SimpleYamlConfig {
  private final File file;
@@ -90,7 +89,7 @@ public final class SimpleYamlConfig {

  public int getInt(final String path) {
    if (!yaml.contains(path)) {
-      LOGGER.warn("Could not find {} in {}.", path, file.getName());
+      Sonar.get().getLogger().warn("Could not find {} in {}.", path, file.getName());
      return 0;
    }
    return yaml.getInt(path);
@@ -98,7 +97,7 @@ public final class SimpleYamlConfig {

  public boolean getBoolean(final String path) {
    if (!yaml.contains(path)) {
-      LOGGER.warn("Could not find {} in {}.", path, file.getName());
+      Sonar.get().getLogger().warn("Could not find {} in {}.", path, file.getName());
      return false;
    }
    return yaml.getBoolean(path);
@@ -106,7 +105,7 @@ public final class SimpleYamlConfig {

  public @NotNull String getString(final String path) {
    if (!yaml.contains(path)) {
-      LOGGER.warn("Could not find {} in {}.", path, file.getName());
+      Sonar.get().getLogger().warn("Could not find {} in {}.", path, file.getName());
      return "";
    }
    final Object object = yaml.get(path);
@@ -118,7 +117,7 @@ public final class SimpleYamlConfig {

  public List<String> getStringList(final String path) {
    if (!yaml.contains(path)) {
-      LOGGER.warn("Could not find {} in {}.", path, file.getName());
+      Sonar.get().getLogger().warn("Could not find {} in {}.", path, file.getName());
      return new ArrayList<>(0);
    }
    return yaml.getStringList(path);
@@ -126,7 +125,7 @@ public final class SimpleYamlConfig {

  public List<Integer> getIntList(final String path) {
    if (!yaml.contains(path)) {
-      LOGGER.warn("Could not find {} in {}.", path, file.getName());
+      Sonar.get().getLogger().warn("Could not find {} in {}.", path, file.getName());
      return new ArrayList<>(0);
    }
    return yaml.getIntegerList(path);
@@ -30,7 +30,6 @@ import xyz.jonesdev.sonar.api.command.SonarCommand;
 import xyz.jonesdev.sonar.api.database.ormlite.H2DatabaseTypeAdapter;
 import xyz.jonesdev.sonar.api.database.ormlite.MariaDbDatabaseTypeAdapter;
 import xyz.jonesdev.sonar.api.database.ormlite.MysqlDatabaseTypeAdapter;
-import xyz.jonesdev.sonar.api.logger.LoggerWrapper;
 import xyz.jonesdev.sonar.api.webhook.DiscordWebhook;

 import java.io.File;
@@ -52,24 +51,6 @@ public final class SonarConfiguration {
  @Getter
  private Language language;

-  static final LoggerWrapper LOGGER = new LoggerWrapper() {
-
-    @Override
-    public void info(final String message, final Object... args) {
-      Sonar.get().getLogger().info("[config] " + message, args);
-    }
-
-    @Override
-    public void warn(final String message, final Object... args) {
-      Sonar.get().getLogger().warn("[config] " + message, args);
-    }
-
-    @Override
-    public void error(final String message, final Object... args) {
-      Sonar.get().getLogger().error("[config] " + message, args);
-    }
-  };
-
  public SonarConfiguration(final @NotNull File pluginFolder) {
    this.pluginFolder = pluginFolder;
    this.messagesConfig = new SimpleYamlConfig(new File(pluginFolder, "messages.yml"));
@@ -85,14 +66,14 @@ public final class SonarConfiguration {
      final URL defaultLanguageFile = Sonar.class.getResource("/assets/language.properties");
      // Make sure the file actually exists before trying to copy it
      if (defaultLanguageFile == null) {
-        LOGGER.error("Cannot check for custom language (is the file missing?)");
+        Sonar.get().getLogger().error("Cannot check for custom language (is the file missing?)");
        return DEFAULT_FALLBACK_LANGUAGE;
      }
      // Copy the file to the plugin data directory
      try (final InputStream inputStream = defaultLanguageFile.openStream()) {
        Files.copy(inputStream, languageFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
      } catch (IOException exception) {
-        LOGGER.error("Error copying file: {}", exception);
+        Sonar.get().getLogger().error("Error copying file: {}", exception);
        return DEFAULT_FALLBACK_LANGUAGE;
      }
    }
@@ -106,13 +87,13 @@ public final class SonarConfiguration {
        // Try parsing the property as a language
        return Language.fromCode(property);
      } catch (Throwable throwable) {
-        LOGGER.error("Could not find requested language: {}", throwable);
-        LOGGER.error("You can view a full list of valid language codes here:");
-        LOGGER.error("https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes");
-        LOGGER.error("If a translation does not exist yet, Sonar will use English (en).");
+        Sonar.get().getLogger().error("Could not find requested language: {}", throwable);
+        Sonar.get().getLogger().error("You can view a full list of valid language codes here:");
+        Sonar.get().getLogger().error("https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes");
+        Sonar.get().getLogger().error("If a translation does not exist yet, Sonar will use English (en).");
      }
    } catch (IOException exception) {
-      LOGGER.error("Error reading language file: {}", exception);
+      Sonar.get().getLogger().error("Error reading language file: {}", exception);
    }
    return DEFAULT_FALLBACK_LANGUAGE;
  }
@@ -131,13 +112,13 @@ public final class SonarConfiguration {
        final String property = System.getProperty("user.language", "en");
        language = Language.fromCode(property);
        // Make sure the user knows that we're using the system language for translations
-        LOGGER.info("Using system language ({}) for translations.", language);
+        Sonar.get().getLogger().info("Using system language ({}) for translations.", language);
      } catch (Exception exception) {
-        LOGGER.warn("Could not use system language for translations.");
-        LOGGER.warn("Using default language ({}) for translations.", language);
+        Sonar.get().getLogger().warn("Could not use system language for translations.");
+        Sonar.get().getLogger().warn("Using default language ({}) for translations.", language);
      }
    } else {
-      LOGGER.info("Using custom language ({}) for translations.", language);
+      Sonar.get().getLogger().info("Using custom language ({}) for translations.", language);
    }

    // Load all configurations
@@ -177,12 +158,12 @@ public final class SonarConfiguration {
    verification.timing = Verification.Timing.valueOf(generalConfig.getString("verification.timing"));
    // Warn the user if the verification timing is set to NEVER
    if (verification.timing == Verification.Timing.NEVER) {
-      LOGGER.warn(" ");
-      LOGGER.warn("You have set the verification timing to 'NEVER'.");
-      LOGGER.warn("Sonar will NOT perform the bot verification at all, therefore making it useless.");
-      LOGGER.warn("It is highly suggested to set this option to either 'DURING_ATTACK' or 'ALWAYS'.");
-      LOGGER.warn("Please only edit this option if you really know what you are doing.");
-      LOGGER.warn(" ");
+      Sonar.get().getLogger().warn(" ");
+      Sonar.get().getLogger().warn("You have set the verification timing to 'NEVER'.");
+      Sonar.get().getLogger().warn("Sonar will NOT perform the bot verification at all, therefore making it useless.");
+      Sonar.get().getLogger().warn("It is highly suggested to set this option to either 'DURING_ATTACK' or 'ALWAYS'.");
+      Sonar.get().getLogger().warn("Please only edit this option if you really know what you are doing.");
+      Sonar.get().getLogger().warn(" ");
    }

    verification.gravity.enabled = generalConfig.getBoolean("verification.checks.gravity.enabled");
@@ -202,10 +183,11 @@ public final class SonarConfiguration {

    final String backgroundPath = generalConfig.getString("verification.checks.map-captcha.background");
    if (!backgroundPath.isEmpty()) {
-      try (final InputStream inputStream = new FileInputStream(backgroundPath)) {
-        verification.map.backgroundImage = inputStream;
-      } catch (IOException exception) {
-        Sonar.get().getLogger().error("Could not find background image", exception);
+      final File backgroundFile = new File(pluginFolder, backgroundPath);
+      if (backgroundFile.exists()) {
+        verification.map.backgroundImage = backgroundFile;
+      } else {
+        Sonar.get().getLogger().error("Could not find background image {}", backgroundFile.getAbsolutePath());
      }
    }

@@ -213,10 +195,10 @@ public final class SonarConfiguration {
    verification.brand.validRegex = Pattern.compile(generalConfig.getString("verification.checks.client-brand.valid-regex"));
    verification.brand.maxLength = generalConfig.getInt("verification.checks.client-brand.max-length");

+    verification.timeOfDay = clamp(generalConfig.getInt("verification.time-of-day"), 0, 24000);
    verification.gamemode = Verification.Gamemode.valueOf(generalConfig.getString("verification.gamemode"));
    verification.validNameRegex = Pattern.compile(generalConfig.getString("verification.checks.valid-name-regex"));
    verification.validLocaleRegex = Pattern.compile(generalConfig.getString("verification.checks.valid-locale-regex"));
-    verification.maxLoginPackets = clamp(generalConfig.getInt("verification.checks.max-login-packets"), 128, 8192);

    verification.checkGeyser = generalConfig.getBoolean("verification.check-geyser-players");
    verification.logConnections = generalConfig.getBoolean("verification.log-connections");
@@ -261,10 +243,16 @@ public final class SonarConfiguration {

    // Messages
    prefix = MiniMessage.miniMessage().deserialize(messagesConfig.getString("prefix"));
-    noPermission = MiniMessage.miniMessage().deserialize(messagesConfig.getString("commands.no-permission"),
-      Placeholder.component("prefix", prefix));

-    SonarCommand.prepareCachedMessages();
+    final String noPermissionMessage = messagesConfig.getString("commands.no-permission");
+    if (noPermissionMessage.isEmpty()) {
+      noPermission = null;
+    } else {
+      noPermission = MiniMessage.miniMessage().deserialize(noPermissionMessage,
+        Placeholder.component("prefix", prefix));
+    }
+
+    SonarCommand.prepareCachedTabSuggestions();

    supportUrl = messagesConfig.getString("support-url");
    header = MiniMessage.miniMessage().deserialize(
@@ -303,7 +291,7 @@ public final class SonarConfiguration {
    final String resourceName = url + "/" + language.getCode() + ".yml";
    URL result = Sonar.class.getResource("/assets/" + resourceName);
    if (result == null) {
-      LOGGER.warn("Could not find " + resourceName + "! Using en.yml!");
+      Sonar.get().getLogger().warn("Could not find " + resourceName + "! Using en.yml!");
      result = Objects.requireNonNull(Sonar.class.getResource("/assets/" + url + "/en.yml"));
    }
    return result;
@@ -386,7 +374,7 @@ public final class SonarConfiguration {
      private int maxDuration;
      private int maxTries;
      private String alphabet;
-      private InputStream backgroundImage;
+      private File backgroundImage;
    }

    @Getter
@@ -427,6 +415,7 @@ public final class SonarConfiguration {
      }
    }

+    private int timeOfDay;
    private boolean checkGeyser;
    private boolean logConnections;
    private boolean logDuringAttack;
@@ -434,7 +423,6 @@ public final class SonarConfiguration {
    private Pattern validNameRegex;
    private Pattern validLocaleRegex;

-    private int maxLoginPackets;
    private int readTimeout;
    private int writeTimeout;
    private int reconnectDelay;
@@ -489,7 +477,7 @@ public final class SonarConfiguration {
      private final DatabaseType databaseType;
      private final Library databaseDriver;
      @Setter
-      private boolean downloaded;
+      private boolean loaded;
    }

    private Type type;
@@ -20,7 +20,7 @@ package xyz.jonesdev.sonar.api.database.controller;
 import com.alessiodp.libby.LibraryManager;
 import com.j256.ormlite.dao.Dao;
 import com.j256.ormlite.dao.DaoManager;
-import com.j256.ormlite.jdbc.JdbcPooledConnectionSource;
+import com.j256.ormlite.jdbc.JdbcConnectionSource;
 import com.j256.ormlite.stmt.QueryBuilder;
 import com.j256.ormlite.support.ConnectionSource;
 import com.j256.ormlite.table.TableUtils;
@@ -28,69 +28,50 @@ import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.annotations.Range;
-import org.jetbrains.annotations.Unmodifiable;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.config.SonarConfiguration;
 import xyz.jonesdev.sonar.api.database.model.VerifiedPlayer;
-import xyz.jonesdev.sonar.api.logger.LoggerWrapper;
+import xyz.jonesdev.sonar.api.fingerprint.FingerprintingUtil;

 import java.io.File;
 import java.sql.SQLException;
 import java.sql.Timestamp;
 import java.time.Instant;
 import java.time.temporal.ChronoUnit;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;

 public final class VerifiedPlayerController {
-  private static final ExecutorService DB_UPDATE_SERVICE = Executors.newSingleThreadExecutor();
-
-  private static final LoggerWrapper LOGGER = new LoggerWrapper() {
-
-    @Override
-    public void info(final String message, final Object... args) {
-      Sonar.get().getLogger().info("[database] " + message, args);
-    }
-
-    @Override
-    public void warn(final String message, final Object... args) {
-      Sonar.get().getLogger().warn("[database] " + message, args);
-    }
-
-    @Override
-    public void error(final String message, final Object... args) {
-      Sonar.get().getLogger().error("[database] " + message, args);
-    }
-  };
-
-  private final Map<String, Collection<UUID>> cache = new ConcurrentHashMap<>(128);
+  @Getter
+  private final Set<String> cache = Collections.synchronizedSet(new HashSet<>());
  private @Nullable ConnectionSource connectionSource;
  private Dao<VerifiedPlayer, Integer> dao;
  private QueryBuilder<VerifiedPlayer, Integer> queryBuilder;
  @Getter
  private final @NotNull SonarConfiguration.Database.Type cachedDatabaseType;
+  private final ExecutorService updateService = Executors.newSingleThreadExecutor();

  public VerifiedPlayerController(final @NotNull LibraryManager libraryManager) {
    final SonarConfiguration.Database database = Sonar.get().getConfig().getDatabase();
    cachedDatabaseType = database.getType();

    if (cachedDatabaseType == SonarConfiguration.Database.Type.NONE) {
-      LOGGER.warn("Configure a database to save verified players.");
+      Sonar.get().getLogger().warn("Configure a database to save verified players.");
      return;
    }

-    // Make sure to only download the driver once
-    if (!cachedDatabaseType.isDownloaded()) {
-      LOGGER.info("Downloading {} driver version {}",
+    // Make sure to only load the driver once per database type
+    if (!cachedDatabaseType.isLoaded()) {
+      Sonar.get().getLogger().info("Loading {} driver version {}",
        cachedDatabaseType.getDatabaseType().getDatabaseName(),
        cachedDatabaseType.getDatabaseDriver().getVersion());
-      // Download and load the driver for the current database
      libraryManager.loadLibrary(cachedDatabaseType.getDatabaseDriver());
-      cachedDatabaseType.setDownloaded(true);
+      cachedDatabaseType.setLoaded(true);
    }
-    cachedDatabaseType.getDatabaseType().loadDriver();

    try {
      final String jdbcURL;
@@ -109,12 +90,11 @@ public final class VerifiedPlayerController {
          Sonar.get().getConfig().getGeneralConfig().getString("database.name"));
      }

-      connectionSource = new JdbcPooledConnectionSource(jdbcURL,
+      connectionSource = new JdbcConnectionSource(jdbcURL,
        Sonar.get().getConfig().getGeneralConfig().getString("database.username"),
        Sonar.get().getConfig().getGeneralConfig().getString("database.password"),
        cachedDatabaseType.getDatabaseType());

-      // Create database table
      try {
        TableUtils.createTableIfNotExists(connectionSource, VerifiedPlayer.class);
      } catch (SQLException ignored) {
@@ -130,18 +110,20 @@ public final class VerifiedPlayerController {

      // Make sure to run the clean task and the caching task in the same thread
      // https://github.com/jonesdevelopment/sonar/issues/150
-      DB_UPDATE_SERVICE.execute(() -> {
-        try {
-          // Make sure to clear all outdated entries first
-          clearOld(database.getMaximumAge());
-          // Add all entries from the database to the cache
-          dao.queryForAll().forEach(this::_add);
-        } catch (SQLException exception) {
-          LOGGER.error("Error initializing database: {}", exception);
+      updateService.execute(() -> {
+        if (connectionSource != null) {
+          try {
+            // Make sure to clear all outdated entries first
+            clearOld(database.getMaximumAge());
+            // Add all entries from the database to the cache
+            dao.queryForAll().forEach(verifiedPlayer -> cache.add(verifiedPlayer.getFingerprint()));
+          } catch (SQLException exception) {
+            exception.printStackTrace(System.err);
+          }
        }
      });
    } catch (SQLException exception) {
-      LOGGER.error("Error setting up database: {}", exception);
+      exception.printStackTrace(System.err);
    }
  }

@@ -154,28 +136,29 @@ public final class VerifiedPlayerController {
      try {
        connectionSource.close();
      } catch (Exception exception) {
-        LOGGER.error("Error closing database: {}", exception);
+        exception.printStackTrace(System.err);
      }
+      // Make sure not to reuse a closed connection
+      connectionSource = null;
+      updateService.shutdown();
    }
  }

  /**
-   * Clear all old entries using the given timestamp.
+   * Clear all old entries using the given timestamp
   */
  private void clearOld(final @Range(from = 1, to = 365) int maximumAge) throws SQLException {
-    final long timestamp = Instant.now()
-      .minus(maximumAge, ChronoUnit.DAYS)
-      .getEpochSecond() * 1000L; // convert to ms
+    final long timestamp = Instant.now().minus(maximumAge, ChronoUnit.DAYS).getEpochSecond() * 1000L;

    final List<VerifiedPlayer> oldEntries = queryBuilder.where()
      .lt("timestamp", new Timestamp(timestamp))
      .query();

-    if (oldEntries != null) {
+    if (oldEntries != null && !oldEntries.isEmpty()) {
      for (final VerifiedPlayer player : oldEntries) {
        dao.delete(player);
      }
-      LOGGER.info("Removed {} database entries older than {} days.",
+      Sonar.get().getLogger().info("Removed {} database entries older than {} days.",
        oldEntries.size(), maximumAge);
    }
  }
@@ -184,151 +167,81 @@ public final class VerifiedPlayerController {
   * First, remove the player from the local cache and then,
   * secondly, asynchronously add the player to the database.
   *
-   * @param inetAddress InetAddress of the VerifiedPlayer model
+   * @param fingerprint Fingerprint of the verified player
   */
-  public void remove(final @NotNull String inetAddress) {
-    _remove(inetAddress);
+  public void remove(final @NotNull String fingerprint) {
+    cache.remove(fingerprint);

    // Don't try to update the column if the database type is NONE
    if (cachedDatabaseType == SonarConfiguration.Database.Type.NONE) {
      return;
    }

-    DB_UPDATE_SERVICE.execute(() -> {
-      // We cannot throw a NullPointerException within the executor service
-      // because we want to handle the error instead of simply throwing an exception
-      if (connectionSource == null) {
-        return;
-      }
+    updateService.execute(() -> {
+      if (connectionSource != null) {
+        try {
+          final List<VerifiedPlayer> verifiedPlayer = queryBuilder.where()
+            .eq("fingerprint", fingerprint)
+            .query();

-      try {
-        final List<VerifiedPlayer> verifiedPlayer = queryBuilder.where()
-          .eq("ip_address", inetAddress)
-          .query();
-
-        if (verifiedPlayer != null) {
-          for (final VerifiedPlayer player : verifiedPlayer) {
-            dao.delete(player);
+          if (verifiedPlayer != null) {
+            for (final VerifiedPlayer player : verifiedPlayer) {
+              dao.delete(player);
+            }
          }
+        } catch (SQLException exception) {
+          exception.printStackTrace(System.err);
        }
-      } catch (SQLException exception) {
-        LOGGER.error("Error trying to remove entry: {}", exception);
      }
    });
  }

  /**
-   * Locally remove the object from the cache
-   *
-   * @param inetAddress IP address of the player
+   * Creates a new VerifiedPlayer model from the given username, host address, and timestamp
   */
-  private void _remove(final @NotNull String inetAddress) {
-    cache.remove(inetAddress);
+  public void add(final @NotNull String username, final @NotNull String hostAddress, final long timestamp) {
+    final String fingerprint = FingerprintingUtil.getFingerprint(username, hostAddress);
+    // Add a new VerifiedPlayer object from the given parameters to the database
+    add(new VerifiedPlayer(fingerprint, timestamp));
  }

  /**
-   * First, cache the player locally and then,
-   * secondly, asynchronously add the player to the database.
-   *
-   * @param player VerifiedPlayer model
+   * Caches the player locally and then adds the player to the database
   */
  public void add(final @NotNull VerifiedPlayer player) {
-    _add(player);
+    cache.add(player.getFingerprint());

    // Don't try to update the column if the database type is NONE
    if (cachedDatabaseType == SonarConfiguration.Database.Type.NONE) {
      return;
    }

-    DB_UPDATE_SERVICE.execute(() -> {
-      // We cannot throw a NullPointerException within the executor service
-      // because we want to handle the error instead of simply throwing an exception
-      if (connectionSource == null) {
-        return;
-      }
-
-      try {
-        dao.createIfNotExists(player);
-      } catch (SQLException exception) {
-        LOGGER.error("Error trying to add entry: {}", exception);
+    updateService.execute(() -> {
+      if (connectionSource != null) {
+        try {
+          dao.createIfNotExists(player);
+        } catch (SQLException exception) {
+          exception.printStackTrace(System.err);
+        }
      }
    });
  }

-  /**
-   * Locally cache the object
-   *
-   * @param player VerifiedPlayer model
-   */
-  private void _add(final @NotNull VerifiedPlayer player) {
-    cache.computeIfAbsent(player.getInetAddress(), v -> new ArrayList<>())
-      .add(player.getPlayerUuid());
-  }
-
-  /**
-   * Returns the number of verified IP addresses
-   *
-   * @return Estimated size of the local cache
-   */
-  public int estimatedSize() {
-    return cache.size();
-  }
-
-  /**
-   * Returns the sum of verified IP addresses
-   * and their respective collection of UUIDs
-   *
-   * @return Exact size of all total verified players
-   */
-  @Deprecated
-  public synchronized int exactSize() {
-    return cache.values().stream()
-      .mapToInt(Collection::size)
-      .sum();
-  }
-
-  /**
-   * @return {@link java.util.Collection} of UUIDs associated with an IP address
-   */
-  public @Unmodifiable Collection<UUID> getUUIDs(final @NotNull String inetAddress) {
-    return cache.getOrDefault(inetAddress, Collections.emptyList());
-  }
-
  /**
   * Clear the local cache, and, if the database type is set,
   * remove the table from the database.
   */
-  public synchronized void clearAll() {
+  public void clearAll() {
    cache.clear();

    // Delete the entire table from the database, if necessary
-    if (cachedDatabaseType != SonarConfiguration.Database.Type.NONE) {
+    if (connectionSource != null
+      && cachedDatabaseType != SonarConfiguration.Database.Type.NONE) {
      try {
        dao.deleteBuilder().delete();
      } catch (SQLException exception) {
-        LOGGER.error("Error trying to clear entries: {}", exception);
+        exception.printStackTrace(System.err);
      }
    }
  }
-
-  /**
-   * @param inetAddress IP address
-   * @param uuid        UUID associated to the IP
-   * @return Whether the local cache contains the IP and UUID
-   */
-  public boolean has(final @NotNull String inetAddress, final @NotNull UUID uuid) {
-    final Collection<UUID> got = cache.get(inetAddress);
-    if (got != null) {
-      return got.contains(uuid);
-    }
-    return false;
-  }
-
-  /**
-   * @param inetAddress IP address
-   * @return Whether the local cache contains the IP
-   */
-  public boolean has(final @NotNull String inetAddress) {
-    return cache.containsKey(inetAddress);
-  }
 }
@@ -25,34 +25,23 @@ import lombok.NoArgsConstructor;
 import lombok.ToString;
 import org.jetbrains.annotations.NotNull;

-import java.net.InetAddress;
 import java.sql.Timestamp;
-import java.util.UUID;

@Getter
@ToString
+@DatabaseTable(tableName = "sonar_fingerprints")
@NoArgsConstructor(access = AccessLevel.PROTECTED)
-@DatabaseTable(tableName = "sonar_verified_players")
 public final class VerifiedPlayer {
  @SuppressWarnings("unused")
  @DatabaseField(generatedId = true)
  private int id;

  @DatabaseField(
-    columnName = "ip_address",
+    columnName = "fingerprint",
    canBeNull = false,
-    uniqueIndexName = "ip_address_player_uuid_idx",
-    width = 16
+    width = 48
  )
-  private String inetAddress;
-
-  @DatabaseField(
-    columnName = "player_uuid",
-    canBeNull = false,
-    uniqueIndexName = "ip_address_player_uuid_idx",
-    width = 36
-  )
-  private UUID playerUuid;
+  private String fingerprint;

  @DatabaseField(
    columnName = "timestamp",
@@ -60,17 +49,9 @@ public final class VerifiedPlayer {
  )
  private Timestamp timestamp;

-  public VerifiedPlayer(final @NotNull InetAddress inetAddress,
-                        final @NotNull UUID playerUuid,
+  public VerifiedPlayer(final @NotNull String fingerprint,
                        final long timestamp) {
-    this(inetAddress.getHostAddress(), playerUuid, timestamp);
-  }
-
-  public VerifiedPlayer(final @NotNull String inetAddress,
-                        final @NotNull UUID playerUuid,
-                        final long timestamp) {
-    this.inetAddress = inetAddress;
-    this.playerUuid = playerUuid;
+    this.fingerprint = fingerprint;
    this.timestamp = new Timestamp(timestamp);
  }
 }
@@ -17,13 +17,13 @@

 package xyz.jonesdev.sonar.api.event;

+import org.jetbrains.annotations.NotNull;
+
@FunctionalInterface
 public interface SonarEventListener {

  /**
-   * Handles the publishing of an event
-   *
-   * @param event [Cancellable] Sonar event
+   * Handles the publishing of an event through Sonar's API
   */
-  void handle(final SonarEvent event);
+  void handle(final @NotNull SonarEvent event);
 }
@@ -15,16 +15,18 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.api.command;
+package xyz.jonesdev.sonar.api.event.impl;

 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.ToString;
+import xyz.jonesdev.sonar.api.event.SonarEvent;
+import xyz.jonesdev.sonar.api.timer.SystemTimer;

@Getter
+@ToString
@RequiredArgsConstructor
-@ToString(of = "rawArguments")
-public final class CommandInvocation {
-  private final InvocationSource source;
-  private final String[] rawArguments;
+public final class CaptchaGenerationEndEvent implements SonarEvent {
+  private final SystemTimer timer;
+  private final int amountGenerated;
 }
@@ -15,16 +15,17 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.api.exception;
+package xyz.jonesdev.sonar.api.event.impl;

-import org.jetbrains.annotations.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+import xyz.jonesdev.sonar.api.event.SonarEvent;
+import xyz.jonesdev.sonar.api.fallback.captcha.CaptchaGenerator;

-public final class AlreadyInitializedException extends RuntimeException {
-  public AlreadyInitializedException(final @NotNull String message) {
-    super(message);
-  }
-
-  public Throwable fillInStackTrace() {
-    return this;
-  }
+@Getter
+@Setter
+@AllArgsConstructor
+public final class CaptchaGenerationStartEvent implements SonarEvent {
+  private CaptchaGenerator captchaGenerator;
 }
@@ -20,7 +20,6 @@ package xyz.jonesdev.sonar.api.event.impl;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import lombok.ToString;
-import org.jetbrains.annotations.ApiStatus;
 import xyz.jonesdev.sonar.api.event.SonarEvent;
 import xyz.jonesdev.sonar.api.fallback.FallbackUser;

@@ -28,6 +27,5 @@ import xyz.jonesdev.sonar.api.fallback.FallbackUser;
@ToString
@RequiredArgsConstructor
 public final class UserBlacklistedEvent implements SonarEvent {
-  @ApiStatus.Experimental
  private final FallbackUser user;
 }
@@ -27,6 +27,5 @@ import xyz.jonesdev.sonar.api.fallback.FallbackUser;
@ToString
@RequiredArgsConstructor
 public final class UserVerifyJoinEvent implements SonarEvent {
-  private final String username;
  private final FallbackUser user;
 }
@@ -23,14 +23,9 @@ import lombok.ToString;
 import xyz.jonesdev.sonar.api.event.SonarEvent;
 import xyz.jonesdev.sonar.api.fallback.FallbackUser;

-import java.util.UUID;
-
@Getter
@ToString
@RequiredArgsConstructor
 public final class UserVerifySuccessEvent implements SonarEvent {
-  private final String username;
-  private final UUID offlineUuid;
  private final FallbackUser user;
-  private final long timeTakenToVerify;
 }
@@ -22,12 +22,10 @@ import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
-import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.config.SonarConfiguration;
 import xyz.jonesdev.sonar.api.fallback.captcha.CaptchaGenerator;
 import xyz.jonesdev.sonar.api.fallback.ratelimit.Ratelimiter;
-import xyz.jonesdev.sonar.api.logger.LoggerWrapper;

 import java.net.InetAddress;
 import java.util.concurrent.ConcurrentHashMap;
@@ -38,40 +36,18 @@ import java.util.concurrent.ConcurrentMap;
 public final class Fallback {
  public static final Fallback INSTANCE = new Fallback();

-  // Map of all players connected to the server in general
  private final ConcurrentMap<InetAddress, Integer> online = new ConcurrentHashMap<>(128);
-  // Map of all connected IP addresses (used for fast checking)
-  private final ConcurrentMap<InetAddress, Byte> connected = new ConcurrentHashMap<>(128);
-  // Cache of all blacklisted IP addresses to ensure each entry can expire after the given time
+  private final ConcurrentMap<InetAddress, Boolean> connected = new ConcurrentHashMap<>(256);
+  private final FallbackLoginQueue queue = new FallbackLoginQueue();
  @Setter
  private Cache<String, Integer> blacklist;
  @Setter
  private long blacklistTime;
  @Setter
  private CaptchaGenerator captchaGenerator;
-
-  private final @NotNull FallbackQueue queue = new FallbackQueue();
  @Setter
  private Ratelimiter<InetAddress> ratelimiter;

-  private final LoggerWrapper logger = new LoggerWrapper() {
-
-    @Override
-    public void info(final String message, final Object... args) {
-      Sonar.get().getLogger().info("[fallback] " + message, args);
-    }
-
-    @Override
-    public void warn(final String message, final Object... args) {
-      Sonar.get().getLogger().warn("[fallback] " + message, args);
-    }
-
-    @Override
-    public void error(final String message, final Object... args) {
-      Sonar.get().getLogger().error("[fallback] " + message, args);
-    }
-  };
-
  public boolean shouldVerifyNewPlayers() {
    return shouldPerform(Sonar.get().getConfig().getVerification().getTiming());
  }
@@ -23,8 +23,6 @@ import lombok.RequiredArgsConstructor;
 import xyz.jonesdev.sonar.api.Sonar;

 import java.net.InetAddress;
-import java.util.Iterator;
-import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.ExecutorService;
@@ -32,27 +30,24 @@ import java.util.concurrent.Executors;

@Getter
@RequiredArgsConstructor(access = AccessLevel.PROTECTED)
-public final class FallbackQueue {
+public final class FallbackLoginQueue {
  // Fixed thread pool executor for all new verifications
  private static final int THREAD_POOL_SIZE = Math.min(0x7fff, Runtime.getRuntime().availableProcessors() * 2);
  private static final ExecutorService QUEUE_EXECUTOR = Executors.newFixedThreadPool(THREAD_POOL_SIZE);

-  private final ConcurrentMap<InetAddress, Runnable> players = new ConcurrentHashMap<>(
-    128, 0.75f, Runtime.getRuntime().availableProcessors());
+  private final ConcurrentMap<InetAddress, Runnable> players = new ConcurrentHashMap<>(512);

  public void poll() {
-    final int maxQueuePolls = Sonar.get().getConfig().getQueue().getMaxQueuePolls();
-    int index = 0;
-
-    // Iterate through the map and process up to maxQueuePolls entries
+    final int maxQueuePolls = Math.min(players.size(), Sonar.get().getConfig().getQueue().getMaxQueuePolls());
+    // No need to initiate an executor service task if nobody is currently queued
+    if (maxQueuePolls <= 0) return;
    // We need to be cautious here since we don't want any concurrency issues
-    final Iterator<Map.Entry<InetAddress, Runnable>> iterator = players.entrySet().iterator();
-    while (iterator.hasNext() && index++ < maxQueuePolls) {
-      // Run the cached runnable
-      final Map.Entry<InetAddress, Runnable> entry = iterator.next();
-      QUEUE_EXECUTOR.execute(entry.getValue());
-      // Remove runnable from the map
-      iterator.remove();
-    }
+    QUEUE_EXECUTOR.execute(() -> {
+      final var iterator = players.entrySet().iterator();
+      for (int index = 0; index < maxQueuePolls && iterator.hasNext(); index++) {
+        iterator.next().getValue().run();
+        iterator.remove();
+      }
+    });
  }
 }
@@ -18,7 +18,6 @@
 package xyz.jonesdev.sonar.api.fallback;

 import io.netty.channel.Channel;
-import io.netty.channel.ChannelPipeline;
 import io.netty.util.ReferenceCountUtil;
 import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.NotNull;
@@ -26,14 +25,10 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.api.timer.SystemTimer;

 import java.net.InetAddress;
-import java.util.UUID;

 public interface FallbackUser {
  @NotNull
-  Channel getChannel();
-
-  @NotNull
-  ChannelPipeline getPipeline();
+  Channel channel();

  @NotNull
  InetAddress getInetAddress();
@@ -45,15 +40,14 @@ public interface FallbackUser {
  SystemTimer getLoginTimer();

  @NotNull
-  UUID getOfflineUuid();
+  String getFingerprint();

-  boolean isReceivedClientSettings();
+  @NotNull
+  String getUsername();

-  void setReceivedClientSettings(final boolean receivedClientSettings);
+  boolean isForceCaptcha();

-  boolean isReceivedPluginMessage();
-
-  void setReceivedPluginMessage(final boolean receivedPluginMessage);
+  void setForceCaptcha(final boolean isForceCaptcha);

  boolean isGeyser();

@@ -65,22 +59,14 @@ public interface FallbackUser {
   */
  void disconnect(final @NotNull Component reason);

-  /**
-   * Takes over the channel and begins the verification process
-   *
-   * @param username    Username of the player
-   * @param offlineUuid UUID of the player
-   */
-  void hijack(final @NotNull String username, final @NotNull UUID offlineUuid);
-
  /**
   * Sends a packet/message to the player
   *
   * @param msg Message to send to the player
   */
  default void write(final @NotNull Object msg) {
-    if (getChannel().isActive()) {
-      getChannel().writeAndFlush(msg, getChannel().voidPromise());
+    if (channel().isActive()) {
+      channel().writeAndFlush(msg, channel().voidPromise());
    } else {
      ReferenceCountUtil.release(msg);
    }
@@ -91,22 +77,10 @@ public interface FallbackUser {
   * sent once all messages are flushed.
   */
  default void delayedWrite(final @NotNull Object msg) {
-    if (getChannel().isActive()) {
-      getChannel().write(msg, getChannel().voidPromise());
+    if (channel().isActive()) {
+      channel().write(msg, channel().voidPromise());
    } else {
      ReferenceCountUtil.release(msg);
    }
  }
-
-  /**
-   * Disconnects the player who failed the verification
-   * and caches them in FAILED_VERIFICATIONS.
-   * If the player fails the verification twice,
-   * the player will be temporarily denied from verifying.
-   *
-   * @param reason Reason for failing the verification
-   * @apiNote The {@link xyz.jonesdev.sonar.api.event.impl.UserVerifyFailedEvent}
-   * will not be thrown if no reason is given
-   */
-  void fail(final @NotNull String reason);
 }
@@ -17,9 +17,15 @@

 package xyz.jonesdev.sonar.api.fallback.captcha;

+import org.jetbrains.annotations.NotNull;
+
 import java.awt.image.BufferedImage;

@FunctionalInterface
 public interface CaptchaGenerator {
-  BufferedImage createImage(final char[] answer);
+
+  /**
+   * Generates a {@link java.awt.image.BufferedImage} that shows the answer to the CAPTCHA
+   */
+  @NotNull BufferedImage createImage(final char @NotNull [] answer);
 }
@@ -68,7 +68,8 @@ public enum ProtocolVersion {
  MINECRAFT_1_20_2(764),
  MINECRAFT_1_20_3(765),
  MINECRAFT_1_20_5(766),
-  MINECRAFT_1_21(767);
+  MINECRAFT_1_21(767),
+  MINECRAFT_1_21_2(768);

  private final int protocol;

@@ -90,6 +91,22 @@ public enum ProtocolVersion {
    return ID_TO_PROTOCOL_CONSTANT.getOrDefault(protocol, UNKNOWN);
  }

+  public boolean greaterThan(final ProtocolVersion that) {
+    return compareTo(that) > 0;
+  }
+
+  public boolean greaterThanOrEquals(final ProtocolVersion that) {
+    return compareTo(that) >= 0;
+  }
+
+  public boolean lessThan(final ProtocolVersion that) {
+    return compareTo(that) < 0;
+  }
+
+  public boolean lessThanOrEquals(final ProtocolVersion that) {
+    return compareTo(that) <= 0;
+  }
+
  public boolean inBetween(final ProtocolVersion first, final ProtocolVersion last) {
    return compareTo(first) >= 0 && compareTo(last) <= 0;
  }
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.api.fingerprint;
+
+import lombok.experimental.UtilityClass;
+import org.jetbrains.annotations.NotNull;
+
+@UtilityClass
+public class FingerprintingUtil {
+
+  /**
+   * Returns a hex string representing a hash of the username and IP address
+   */
+  public @NotNull String getFingerprint(final @NotNull String username,
+                                        final @NotNull String hostAddress) {
+    final int hash0 = username.hashCode();
+    final int hash1 = hostAddress.hashCode();
+    final int combined = hash0 + hash1;
+    return Integer.toHexString(hash0 >> 4)
+      + Integer.toHexString(combined << 2)
+      + Integer.toHexString(hash1 >> 4);
+  }
+}
@@ -63,10 +63,10 @@ public final class ActionBarNotificationHandler extends NotificationHandler {
      Placeholder.unparsed("verify-total", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalAttemptedVerifications())),
      Placeholder.unparsed("verify-success", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalSuccessfulVerifications())),
      Placeholder.unparsed("verify-failed", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalFailedVerifications())),
-      Placeholder.unparsed("incoming-traffic", Sonar.get().getStatistics().getCurrentIncomingBandwidthFormatted()),
-      Placeholder.unparsed("outgoing-traffic", Sonar.get().getStatistics().getCurrentOutgoingBandwidthFormatted()),
-      Placeholder.unparsed("incoming-traffic-ttl", Sonar.get().getStatistics().getTotalIncomingBandwidthFormatted()),
-      Placeholder.unparsed("outgoing-traffic-ttl", Sonar.get().getStatistics().getTotalOutgoingBandwidthFormatted()),
+      Placeholder.unparsed("incoming-traffic", Sonar.get().getStatistics().getPerSecondIncomingBandwidthFormatted()),
+      Placeholder.unparsed("outgoing-traffic", Sonar.get().getStatistics().getPerSecondOutgoingBandwidthFormatted()),
+      Placeholder.unparsed("incoming-traffic-ttl", formatMemory(Sonar.get().getStatistics().getTotalIncomingBandwidth())),
+      Placeholder.unparsed("outgoing-traffic-ttl", formatMemory(Sonar.get().getStatistics().getTotalOutgoingBandwidth())),
      Placeholder.unparsed("used-memory", formatMemory(getUsedMemory())),
      Placeholder.unparsed("free-memory", formatMemory(getFreeMemory())),
      Placeholder.unparsed("total-memory", formatMemory(getTotalMemory())),
@@ -63,10 +63,10 @@ public final class ChatNotificationHandler extends NotificationHandler {
        Placeholder.unparsed("verify-total", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalAttemptedVerifications())),
        Placeholder.unparsed("verify-success", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalSuccessfulVerifications())),
        Placeholder.unparsed("verify-failed", DECIMAL_FORMAT.format(Sonar.get().getStatistics().getTotalFailedVerifications())),
-        Placeholder.unparsed("incoming-traffic", Sonar.get().getStatistics().getCurrentIncomingBandwidthFormatted()),
-        Placeholder.unparsed("outgoing-traffic", Sonar.get().getStatistics().getCurrentOutgoingBandwidthFormatted()),
-        Placeholder.unparsed("incoming-traffic-ttl", Sonar.get().getStatistics().getTotalIncomingBandwidthFormatted()),
-        Placeholder.unparsed("outgoing-traffic-ttl", Sonar.get().getStatistics().getTotalOutgoingBandwidthFormatted()),
+        Placeholder.unparsed("incoming-traffic", Sonar.get().getStatistics().getPerSecondIncomingBandwidthFormatted()),
+        Placeholder.unparsed("outgoing-traffic", Sonar.get().getStatistics().getPerSecondOutgoingBandwidthFormatted()),
+        Placeholder.unparsed("incoming-traffic-ttl", formatMemory(Sonar.get().getStatistics().getTotalIncomingBandwidth())),
+        Placeholder.unparsed("outgoing-traffic-ttl", formatMemory(Sonar.get().getStatistics().getTotalOutgoingBandwidth())),
        Placeholder.unparsed("used-memory", formatMemory(getUsedMemory())),
        Placeholder.unparsed("free-memory", formatMemory(getFreeMemory())),
        Placeholder.unparsed("total-memory", formatMemory(getTotalMemory())),
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.api.statistics;
+
+@SuppressWarnings("unused")
+public interface SonarStatistics {
+  long getConnectionsPerSecond();
+
+  long getLoginsPerSecond();
+
+  long getCurrentIncomingBandwidth();
+
+  long getCurrentOutgoingBandwidth();
+
+  long getTotalIncomingBandwidth();
+
+  long getTotalOutgoingBandwidth();
+
+  String getPerSecondIncomingBandwidthFormatted();
+
+  String getPerSecondOutgoingBandwidthFormatted();
+
+  int getTotalPlayersJoined();
+
+  int getTotalPlayersVerified();
+
+  int getTotalSuccessfulVerifications();
+
+  int getTotalFailedVerifications();
+
+  long getCurrentAttemptedVerifications();
+
+  int getTotalAttemptedVerifications();
+
+  long getCurrentBlacklistSize();
+
+  long getTotalBlacklistSize();
+}
@@ -66,7 +66,7 @@ public final class AttackTracker {
      // An attack has been detected
      if (currentAttack == null) {
        currentAttack = new AttackStatistics();
-        currentAttack.successfulVerifications = Sonar.get().getVerifiedPlayerController().estimatedSize();
+        currentAttack.successfulVerifications = Sonar.get().getVerifiedPlayerController().getCache().size();
        currentAttack.failedVerifications = Sonar.get().getStatistics().getTotalFailedVerifications();
        Sonar.get().getEventManager().publish(new AttackDetectedEvent());
        Sonar.get().getChatNotificationHandler().handleNotification();
@@ -118,7 +118,7 @@ public final class AttackTracker {
              final String endTimestamp = String.valueOf(System.currentTimeMillis() / 1000L);
              final long blacklisted = Sonar.get().getFallback().getBlacklist().estimatedSize();
              // Calculate during-attack-statistics using their deltas
-              final long totalVerified = Sonar.get().getVerifiedPlayerController().estimatedSize();
+              final long totalVerified = Sonar.get().getVerifiedPlayerController().getCache().size();
              final long verified = Math.max(totalVerified - currentAttack.successfulVerifications, 0);
              final long totalFailed = Sonar.get().getStatistics().getTotalFailedVerifications();
              final long failed = Math.max(totalFailed - currentAttack.failedVerifications, 0);
@@ -15,14 +15,15 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.common.update;
+package xyz.jonesdev.sonar.api.update;

 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.experimental.UtilityClass;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.logger.LoggerWrapper;

 import javax.net.ssl.HttpsURLConnection;
 import java.io.BufferedReader;
@@ -36,24 +37,8 @@ import java.util.concurrent.Executors;
@UtilityClass
 public class UpdateChecker {
  private final ExecutorService ASYNC_EXECUTOR = Executors.newSingleThreadExecutor();
-
-  private final LoggerWrapper LOGGER = new LoggerWrapper() {
-
-    @Override
-    public void info(final String message, final Object... args) {
-      Sonar.get().getLogger().info("[update-checker] " + message, args);
-    }
-
-    @Override
-    public void warn(final String message, final Object... args) {
-      Sonar.get().getLogger().warn("[update-checker] " + message, args);
-    }
-
-    @Override
-    public void error(final String message, final Object... args) {
-      Sonar.get().getLogger().error("[update-checker] " + message, args);
-    }
-  };
+  @Getter
+  private CheckResult lastCheckResult = CheckResult.UNRESOLVED;

  public void checkForUpdates() {
    ASYNC_EXECUTOR.execute(() -> {
@@ -66,17 +51,21 @@ public class UpdateChecker {
        final int convertedCurrentVersion = convertVersion(Sonar.get().getVersion().getVersion());

        if (convertedCurrentVersion < convertedLatestVersion) {
-          LOGGER.warn("A new version of Sonar is available: {}", latestStableRelease);
-          LOGGER.warn("Please make sure to update to the latest version to ensure stability and security:");
-          LOGGER.warn("https://github.com/jonesdevelopment/sonar/releases/tag/{}", latestStableRelease);
+          Sonar.get().getLogger().warn("A new version of Sonar is available: {}", latestStableRelease);
+          Sonar.get().getLogger().warn("Please make sure to update to the latest version to ensure stability and security:");
+          Sonar.get().getLogger().warn("https://github.com/jonesdevelopment/sonar/releases/latest");
+          lastCheckResult = CheckResult.OUTDATED_VERSION;
        } else if (convertedCurrentVersion > convertedLatestVersion || !Sonar.get().getVersion().getGitBranch().equals("main")) {
-          LOGGER.warn("You are currently using an unreleased version of Sonar!");
-          LOGGER.warn("The contributors of Sonar are not responsible for any damage done by using an unstable version");
-        } else {
-          LOGGER.info("You are currently using the latest stable release of Sonar!");
+          Sonar.get().getLogger().warn("You are currently using an unreleased version of Sonar!");
+          Sonar.get().getLogger().warn("The contributors of Sonar are not responsible for any damage done by using an unstable version");
+          lastCheckResult = CheckResult.UNSTABLE_VERSION;
+        } else if (lastCheckResult != CheckResult.LATEST_VERSION) {
+          Sonar.get().getLogger().info("You are currently using the latest stable release of Sonar!");
+          lastCheckResult = CheckResult.LATEST_VERSION;
        }
      } catch (Throwable throwable) {
-        LOGGER.warn("Unable to retrieve version information: {}", throwable);
+        Sonar.get().getLogger().warn("Unable to retrieve version information: {}", throwable);
+        lastCheckResult = CheckResult.API_ERROR;
      }
    });
  }
@@ -118,4 +107,16 @@ public class UpdateChecker {
    final int patch = Integer.parseInt(convertedParts[2]);
    return convertedMajor + convertedMinor + patch; // sum the converted version parts
  }
+
+  @Getter
+  @RequiredArgsConstructor
+  public enum CheckResult {
+    API_ERROR("api-error"),
+    OUTDATED_VERSION("outdated-version"),
+    UNSTABLE_VERSION("unstable-version"),
+    LATEST_VERSION(null),
+    UNRESOLVED(null);
+
+    private final String configKey;
+  }
 }
@@ -86,7 +86,7 @@ allprojects {
 tasks {
  // This is a small wrapper tasks to simplify the building process
  register("build-sonar") {
-    val subprojects = listOf("api", "common", "bukkit", "bungee", "velocity")
+    val subprojects = listOf("api", "captcha", "common", "bukkit", "bungeecord", "velocity")
    val buildTasks = subprojects.flatMap { listOf("$it:clean", "$it:shadowJar") }
    dependsOn(buildTasks)
  }
@@ -27,10 +27,9 @@ import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.command.InvocationSource;
 import xyz.jonesdev.sonar.api.command.SonarCommand;

+import java.util.Collections;
 import java.util.List;

-import static java.util.Collections.emptyList;
-
 public final class BukkitSonarCommand implements CommandExecutor, TabExecutor, SonarCommand {

  @Override
@@ -54,9 +53,6 @@ public final class BukkitSonarCommand implements CommandExecutor, TabExecutor, S
                                    final String commandAlias,
                                    final String @NotNull [] args) {
    // Do not allow tab completion if the player does not have the required permission
-    if (!sender.hasPermission("sonar.command")) {
-      return emptyList();
-    }
-    return getCachedTabSuggestions(args);
+    return sender.hasPermission("sonar.command") ? getCachedTabSuggestions(args) : Collections.emptyList();
  }
 }
@@ -28,18 +28,19 @@ import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.handshake.HandshakePacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginStartPacket;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
 import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;

 import java.net.InetSocketAddress;
 import java.util.Objects;

 import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_INBOUND_HANDLER;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.Direction.SERVERBOUND;
 import static xyz.jonesdev.sonar.common.fallback.protocol.packets.handshake.HandshakePacket.*;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.DEBUG;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;

 final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
+  private static final ProtocolVersion DEFAULT_PROTOCOL_VERSION = ProtocolVersion.MINECRAFT_1_7_2;
+
+  private FallbackPacketRegistry.ProtocolRegistry registry;

  FallbackBukkitInboundHandler() {
    updateRegistry(FallbackPacketRegistry.HANDSHAKE, DEFAULT_PROTOCOL_VERSION);
@@ -53,17 +54,13 @@ final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
    };
  }

-  private FallbackPacketRegistry.ProtocolRegistry registry;
-
-  private static final ProtocolVersion DEFAULT_PROTOCOL_VERSION = ProtocolVersion.MINECRAFT_1_7_2;
-
  public void updateRegistry(final @NotNull FallbackPacketRegistry registry,
                             final @NotNull ProtocolVersion protocolVersion) {
-    this.registry = registry.getProtocolRegistry(SERVERBOUND, protocolVersion);
+    this.registry = registry.getProtocolRegistry(FallbackPacketRegistry.Direction.SERVERBOUND, protocolVersion);
  }

  @Override
-  public void channelRead(final @NotNull ChannelHandlerContext ctx, final @NotNull Object msg) throws Exception {
+  public void channelRead(final @NotNull ChannelHandlerContext ctx, final Object msg) throws Exception {
    if (msg instanceof ByteBuf) {
      final ByteBuf byteBuf = (ByteBuf) msg;

@@ -81,7 +78,7 @@ final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
        return;
      }

-      final int packetId = readVarInt(byteBuf);
+      final int packetId = ProtocolUtil.readVarInt(byteBuf);
      final FallbackPacket packet = registry.createPacket(packetId);

      // Skip the packet if it's not registered within Sonar's packet registry
@@ -95,13 +92,14 @@ final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
        packet.decode(byteBuf, protocolVersion == null ? DEFAULT_PROTOCOL_VERSION : protocolVersion);
      } catch (Throwable throwable) {
        byteBuf.release();
-        throw DEBUG ? new DecoderException(throwable) : QuietDecoderException.INSTANCE;
+        throw ProtocolUtil.DEBUG ? new DecoderException(throwable) : QuietDecoderException.INSTANCE;
      }

      // Check if the packet still has bytes left after we decoded it
      if (byteBuf.isReadable()) {
        byteBuf.release();
-        throw DEBUG ? new DecoderException("Could not read packet to end") : QuietDecoderException.INSTANCE;
+        throw ProtocolUtil.DEBUG ? new DecoderException("Could not read packet to end ("
+          + byteBuf.readableBytes() + " bytes left)") : QuietDecoderException.INSTANCE;
      }

      /*
@@ -119,12 +117,13 @@ final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
          case LOGIN:
          case TRANSFER:
            // Let the actual handler know about the handshake packet
-            handleHandshake(ctx.channel(), handshake.getHostname(), handshake.getProtocolVersionId());
+            handleHandshake(ctx, handshake.getHostname(), handshake.getProtocolVersionId());
            // Be ready for the next packet (which is supposed to be a login packet)
            updateRegistry(FallbackPacketRegistry.LOGIN, Objects.requireNonNull(protocolVersion));
            break;
          default:
-            throw DEBUG ? new DecoderException("Bad intent " + handshake.getIntent()) : QuietDecoderException.INSTANCE;
+            throw ProtocolUtil.DEBUG ? new DecoderException("Bad handshake intent " + handshake.getIntent())
+              : QuietDecoderException.INSTANCE;
        }
      } else if (packet instanceof LoginStartPacket) {
        final LoginStartPacket loginStart = (LoginStartPacket) packet;
@@ -132,9 +131,10 @@ final class FallbackBukkitInboundHandler extends FallbackInboundHandlerAdapter {
        // We've done our job - deject this pipeline
        ctx.pipeline().remove(this);
        // Let Sonar process the login packet
-        handleLogin(ctx.channel(), ctx, () -> {
+        handleLogin(ctx, () -> {
          byteBuf.readerIndex(originalReaderIndex);
          ctx.fireChannelRead(byteBuf.retain());
+          // TODO: recode this?
          final ChannelHandler inboundHandler = ctx.pipeline().remove(FALLBACK_INBOUND_HANDLER);
          if (inboundHandler != null) {
            channelRemovalListener.accept(ctx.pipeline(), FALLBACK_INBOUND_HANDLER, inboundHandler);
@@ -26,8 +26,8 @@ import lombok.experimental.UtilityClass;
 import org.bukkit.Bukkit;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.exception.ReflectiveOperationException;
 import xyz.jonesdev.sonar.common.fallback.netty.FallbackInjectedChannelInitializer;
+import xyz.jonesdev.sonar.common.util.exception.ReflectiveOperationException;

 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
@@ -26,6 +26,8 @@ dependencies {
 tasks {
  shadowJar {
    relocate("net.kyori", "xyz.jonesdev.sonar.libs.kyori")
+
+    archiveFileName = "Sonar-Bungee.jar" // Hardcode a shortened version of the name
  }
 }

@@ -26,7 +26,7 @@ import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.command.InvocationSource;
 import xyz.jonesdev.sonar.api.command.SonarCommand;

-import static java.util.Collections.emptyList;
+import java.util.Collections;

 public final class BungeeSonarCommand extends Command implements TabExecutor, SonarCommand {
  public BungeeSonarCommand() {
@@ -47,9 +47,6 @@ public final class BungeeSonarCommand extends Command implements TabExecutor, So
  @Override
  public Iterable<String> onTabComplete(final @NotNull CommandSender sender, final String @NotNull [] args) {
    // Do not allow tab completion if the player does not have the required permission
-    if (!sender.hasPermission("sonar.command")) {
-      return emptyList();
-    }
-    return getCachedTabSuggestions(args);
+    return sender.hasPermission("sonar.command") ? getCachedTabSuggestions(args) : Collections.emptyList();
  }
 }
@@ -17,7 +17,6 @@

 package xyz.jonesdev.sonar.bungee.fallback;

-import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
 import net.md_5.bungee.netty.ChannelWrapper;
 import net.md_5.bungee.netty.HandlerBoss;
@@ -26,8 +25,8 @@ import net.md_5.bungee.protocol.PacketWrapper;
 import net.md_5.bungee.protocol.packet.Handshake;
 import net.md_5.bungee.protocol.packet.LoginRequest;
 import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.exception.ReflectiveOperationException;
 import xyz.jonesdev.sonar.common.fallback.FallbackInboundHandlerAdapter;
+import xyz.jonesdev.sonar.common.util.exception.ReflectiveOperationException;

 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -49,42 +48,42 @@ final class FallbackBungeeInboundHandler extends FallbackInboundHandlerAdapter {
  }

  @Override
-  public void channelRead(final @NotNull ChannelHandlerContext ctx, final @NotNull Object msg) throws Exception {
+  public void channelRead(final @NotNull ChannelHandlerContext ctx, final Object msg) throws Exception {
    if (msg instanceof PacketWrapper) {
      final PacketWrapper packetWrapper = (PacketWrapper) msg;
      final DefinedPacket wrappedPacket = packetWrapper.packet;
      // Skip any unknown or invalid packets
      if (wrappedPacket != null) {
-        final Channel channel = ctx.channel();
-        // Intercept any handshake packet by the client
        if (wrappedPacket instanceof Handshake) {
          final Handshake handshake = (Handshake) wrappedPacket;
          // We don't care about server pings; remove the handler
          if (handshake.getRequestedProtocol() == STATUS) {
            ctx.pipeline().remove(this);
          } else {
-            handleHandshake(channel, handshake.getHost(), handshake.getProtocolVersion());
+            handleHandshake(ctx, handshake.getHost(), handshake.getProtocolVersion());
          }
-        }
-        // Intercept any server login packet by the client
-        else if (wrappedPacket instanceof LoginRequest) {
+        } else if (wrappedPacket instanceof LoginRequest) {
          // Make sure to use the potentially modified, real IP
          final LoginRequest loginRequest = (LoginRequest) wrappedPacket;
-          final HandlerBoss handlerBoss = channel.pipeline().get(HandlerBoss.class);
-          final ChannelWrapper channelWrapper;
-          try {
-            channelWrapper = (ChannelWrapper) CHANNEL_WRAPPER_GETTER.invokeExact(handlerBoss);
-          } catch (final Throwable throwable) {
-            throw new ReflectiveOperationException(throwable);
+          final HandlerBoss handlerBoss = ctx.pipeline().get(HandlerBoss.class);
+          // This might sometimes happen if the client unexpectedly disconnects
+          if (handlerBoss != null) {
+            // Get the real IP address of the player through the channel wrapper
+            final ChannelWrapper channelWrapper;
+            try {
+              channelWrapper = (ChannelWrapper) CHANNEL_WRAPPER_GETTER.invokeExact(handlerBoss);
+            } catch (final Throwable throwable) {
+              throw new ReflectiveOperationException(throwable);
+            }
+            // We've done our job - deject this pipeline
+            ctx.pipeline().remove(this);
+            // Make sure to mark this packet as released
+            packetWrapper.trySingleRelease();
+            // Let Sonar process the login packet
+            final InetSocketAddress socketAddress = (InetSocketAddress) channelWrapper.getRemoteAddress();
+            handleLogin(ctx, () -> ctx.fireChannelRead(msg), loginRequest.getData(), socketAddress);
+            return;
          }
-          final InetSocketAddress socketAddress = (InetSocketAddress) channelWrapper.getRemoteAddress();
-          // We've done our job - deject this pipeline
-          ctx.pipeline().remove(this);
-          // Make sure to mark this packet as released
-          packetWrapper.trySingleRelease();
-          // Let Sonar process the login packet
-          handleLogin(channel, ctx, () -> ctx.fireChannelRead(msg), loginRequest.getData(), socketAddress);
-          return;
        }
      }
    }
@@ -33,15 +33,11 @@ import java.awt.font.FontRenderContext;
 import java.awt.font.GlyphVector;
 import java.awt.geom.AffineTransform;
 import java.awt.image.BufferedImage;
+import java.io.File;
 import java.io.IOException;
-import java.io.InputStream;
 import java.util.Arrays;
 import java.util.Random;

-import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR;
-import static xyz.jonesdev.sonar.captcha.StandardTTFFontProvider.FONTS;
-import static xyz.jonesdev.sonar.captcha.StandardTTFFontProvider.STANDARD_FONT_SIZE;
-
@Getter
@RequiredArgsConstructor
 public final class StandardCaptchaGenerator implements CaptchaGenerator {
@@ -69,12 +65,12 @@ public final class StandardCaptchaGenerator implements CaptchaGenerator {
    }
  }

-  private final int width, height;
-  private final @Nullable InputStream background;
-  private BufferedImage backgroundImage;
+  private final int width = 128, height = 128;
+  private final @Nullable File background;
+  private @Nullable BufferedImage backgroundImage;

  @Override
-  public @NotNull BufferedImage createImage(final char[] answer) {
+  public @NotNull BufferedImage createImage(final char @NotNull [] answer) {
    final BufferedImage image = createBackgroundImage();
    final Graphics2D graphics = image.createGraphics();
    graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
@@ -91,16 +87,22 @@ public final class StandardCaptchaGenerator implements CaptchaGenerator {
  }

  private @NotNull BufferedImage createBackgroundImage() {
+    // Create a new image buffer with a 3-byte color spectrum
+    final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    if (background == null) {
-      final BufferedImage image = new BufferedImage(width, height, TYPE_3BYTE_BGR);
      // Fill the entire image with a noise texture
      return FBM.filter(image, image);
    }
-    try {
-      return backgroundImage == null ? backgroundImage = ImageIO.read(background) : backgroundImage;
-    } catch (IOException exception) {
-      throw new IllegalStateException("Could not read background image", exception);
+    // Try to load the image from a file if it doesn't exist yet
+    if (backgroundImage == null) {
+      try {
+        backgroundImage = ImageIO.read(background);
+      } catch (IOException exception) {
+        throw new IllegalStateException("Could not read background image", exception);
+      }
    }
+    image.createGraphics().drawImage(backgroundImage, 0, 0, Color.WHITE, null);
+    return image;
  }

  private void applyRandomColorGradient(final @NotNull Graphics2D graphics) {
@@ -122,7 +124,7 @@ public final class StandardCaptchaGenerator implements CaptchaGenerator {

    for (int i = 0; i < answer.length; i++) {
      // Create a glyph vector for the character with a random font
-      final Font font = FONTS[RANDOM.nextInt(FONTS.length)];
+      final Font font = StandardTTFFontProvider.FONTS[RANDOM.nextInt(StandardTTFFontProvider.FONTS.length)];
      glyphs[i] = font.createGlyphVector(ctx, String.valueOf(answer[i]));
    }

@@ -133,7 +135,7 @@ public final class StandardCaptchaGenerator implements CaptchaGenerator {
      .mapToDouble(glyph -> glyph.getLogicalBounds().getWidth() * scalingXY - 1)
      .sum();
    double beginX = Math.max(Math.min(width / 2D - totalWidth / 2D, totalWidth), 0);
-    double beginY = (height + STANDARD_FONT_SIZE / 2D) / 2D + scalingXY;
+    double beginY = (height + StandardTTFFontProvider.STANDARD_FONT_SIZE / 2D) / 2D + scalingXY;

    // Draw each glyph one by one
    for (final GlyphVector glyph : glyphs) {
@@ -28,7 +28,7 @@ import java.util.Random;
 public class Main {
  public void main(final String... args) throws IOException {
    final Random random = new Random();
-    final StandardCaptchaGenerator standardCaptchaGenerator = new StandardCaptchaGenerator(128, 128, null);
+    final StandardCaptchaGenerator standardCaptchaGenerator = new StandardCaptchaGenerator(null);

    final long start = System.currentTimeMillis();
    final char[] dictionary = {'a', 'b', 'c', 'd', 'e', 'f'/*, 'g'*/, 'h'/*, 'i'*/, 'j',
@@ -39,15 +39,13 @@ import xyz.jonesdev.sonar.api.timer.SystemTimer;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer;
 import xyz.jonesdev.sonar.common.fallback.ratelimit.CaffeineCacheRatelimiter;
 import xyz.jonesdev.sonar.common.fallback.ratelimit.NoopCacheRatelimiter;
-import xyz.jonesdev.sonar.common.service.SonarServiceManager;
+import xyz.jonesdev.sonar.common.service.ScheduledServiceManager;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
 import xyz.jonesdev.sonar.common.subcommand.*;
-import xyz.jonesdev.sonar.common.update.UpdateChecker;
 import xyz.jonesdev.sonar.common.util.ProtocolUtil;

 import java.io.File;
 import java.time.Duration;
-import java.util.concurrent.TimeUnit;

@Getter
@RequiredArgsConstructor
@@ -99,13 +97,6 @@ public abstract class SonarBootstrap<T> implements Sonar {
  }

  public final void initialize() {
-    // Check if the branch is not the main branch to warn about unstable versions
-    if (!getVersion().getGitBranch().equals("main")) {
-      getLogger().warn("You are currently using an unofficial experimental branch.");
-      getLogger().warn("It is highly recommended to use the latest stable release of Sonar:");
-      getLogger().warn("https://github.com/jonesdevelopment/sonar/releases");
-    }
-
    getLogger().info("Successfully booted in {}s!", launchTimer);
    getLogger().info("Initializing shared components...");

@@ -121,7 +112,7 @@ public abstract class SonarBootstrap<T> implements Sonar {

      // Start threads
      getLogger().info("Starting all managed threads...");
-      SonarServiceManager.start();
+      ScheduledServiceManager.start();

      // Done
      getLogger().info("Done ({}s)!", launchTimer);
@@ -129,12 +120,6 @@ public abstract class SonarBootstrap<T> implements Sonar {
      // An error has occurred
      getLogger().error("An error has occurred while launching Sonar: {}", throwable);
      throwable.printStackTrace(System.err);
-      return; // Do not check for updates if the launch failed
-    }
-
-    // Check if a new version has been released if enabled in the configuration
-    if (Sonar.get().getConfig().getGeneralConfig().getBoolean("general.check-for-updates")) {
-      UpdateChecker.checkForUpdates();
    }
  }

@@ -156,7 +141,7 @@ public abstract class SonarBootstrap<T> implements Sonar {

    // Update ratelimiter cache
    getFallback().setRatelimiter(getConfig().getVerification().getReconnectDelay() > 0L
-      ? new CaffeineCacheRatelimiter(getConfig().getVerification().getReconnectDelay(), TimeUnit.MILLISECONDS)
+      ? new CaffeineCacheRatelimiter(Duration.ofMillis(getConfig().getVerification().getReconnectDelay()))
      : NoopCacheRatelimiter.INSTANCE);

    // Update blacklist cache
@@ -190,7 +175,7 @@ public abstract class SonarBootstrap<T> implements Sonar {
    // Initialize the shutdown process
    getLogger().info("Starting shutdown process...");
    // Interrupt threads
-    SonarServiceManager.stop();
+    ScheduledServiceManager.stop();
    // Close database connection if present
    if (verifiedPlayerController != null) {
      verifiedPlayerController.close();
@@ -25,9 +25,7 @@ import io.netty.channel.ChannelPromise;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 import org.jetbrains.annotations.NotNull;
-
-import static xyz.jonesdev.sonar.common.statistics.BandwidthStatistics.INCOMING;
-import static xyz.jonesdev.sonar.common.statistics.BandwidthStatistics.OUTGOING;
+import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;

@ChannelHandler.Sharable
@NoArgsConstructor(access = AccessLevel.PRIVATE)
@@ -35,27 +33,22 @@ public final class FallbackBandwidthHandler extends ChannelDuplexHandler {
  public static final ChannelHandler INSTANCE = new FallbackBandwidthHandler();

  @Override
-  public void channelRead(final @NotNull ChannelHandlerContext ctx,
-                          final @NotNull Object msg) throws Exception {
-    // We can only get the size of a message if it's a ByteBuf
+  public void channelRead(final ChannelHandlerContext ctx, final @NotNull Object msg) throws Exception {
    if (msg instanceof ByteBuf) {
      // Increment the incoming traffic by the number of readable bytes
-      INCOMING.increment(((ByteBuf) msg).readableBytes());
+      final int readableBytes = ((ByteBuf) msg).readableBytes();
+      GlobalSonarStatistics.perSecondIncomingTraffic += readableBytes;
    }
-    // Make sure to let the server handle the rest
    ctx.fireChannelRead(msg);
  }

  @Override
-  public void write(final @NotNull ChannelHandlerContext ctx,
-                    final @NotNull Object msg,
-                    final ChannelPromise promise) throws Exception {
-    // We can only get the size of a message if it's a ByteBuf
+  public void write(final ChannelHandlerContext ctx, final Object msg, final ChannelPromise promise) throws Exception {
    if (msg instanceof ByteBuf) {
      // Increment the outgoing traffic by the number of readable bytes
-      OUTGOING.increment(((ByteBuf) msg).readableBytes());
+      final int readableBytes = ((ByteBuf) msg).readableBytes();
+      GlobalSonarStatistics.perSecondOutgoingTraffic += readableBytes;
    }
-    // Make sure to let the server handle the rest
    ctx.write(msg, promise);
  }
 }
@@ -41,7 +41,7 @@ public final class FallbackInboundHandler extends ChannelInboundHandlerAdapter {
  public void channelActive(final @NotNull ChannelHandlerContext ctx) throws Exception {
    // Increase connections per second for the action bar verbose
    GlobalSonarStatistics.countConnection();
-    // Make sure to let the server handle the rest
+    // Make sure to let the server handle this
    ctx.fireChannelActive();
    // Add the packet handler pipeline
    sonarPipelineInjector.accept(ctx.pipeline());
@@ -49,26 +49,42 @@ public final class FallbackInboundHandler extends ChannelInboundHandlerAdapter {

  @Override
  public void channelInactive(final @NotNull ChannelHandlerContext ctx) throws Exception {
+    // Make sure to let the server handle this
+    ctx.fireChannelInactive();
    // The player can disconnect without sending the login packet first
    // Account for this by checking if the inetAddress has been set yet
    if (inetAddress != null) {
-      // Remove the IP address from the connected players
-      Sonar.get().getFallback().getConnected().compute(inetAddress, (k, v) -> null);
      // Remove the IP address from the queue
-      Sonar.get().getFallback().getQueue().getPlayers().compute(inetAddress, (k, v) -> null);
-      // Remove this account from the online players or decrement the number of accounts with the same IP
-      Sonar.get().getFallback().getOnline().compute(inetAddress, (k, v) -> v == null || v <= 1 ? null : v - 1);
+      Sonar.get().getFallback().getQueue().getPlayers().compute(inetAddress, (ignored, action) -> {
+        // The player is not queued, so we need to remove them from other maps as well
+        if (action == null) {
+          // Remove the IP address from the connected players, if needed
+          Sonar.get().getFallback().getConnected().compute(inetAddress, (__, v) -> {
+            /*
+             * Remove this account from the online players or decrement the number of accounts
+             * with the same IP, but only if the player is logging into the backend server.
+             * We don't need to decrement the count if the player was just verified since
+             * we've never actually incremented it in the first place ¯\_(ツ)_/¯
+             */
+            if (v == null) {
+              Sonar.get().getFallback().getOnline().compute(inetAddress,
+                (ignored1, count) -> count == null || count <= 1 ? null : count - 1);
+            }
+            return null;
+          });
+        }
+        return null;
+      });
    }
-    // Make sure to let the server handle the rest
-    ctx.fireChannelInactive();
  }

-  // We can override the default exceptionCaught method since this handler
-  // will run before the connection knows that there has been an error.
+  /*
+   * We can override the default exceptionCaught method since this handler
+   * will run before the connection knows that there has been an error.
+   */
  @Override
  public void exceptionCaught(final @NotNull ChannelHandlerContext ctx,
-                              final @NotNull Throwable cause) throws Exception {
-    // Close the channel if we encounter any errors.
+                              final Throwable cause) throws Exception {
    ctx.close();
  }
 }
@@ -23,24 +23,22 @@ import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.fallback.FallbackUser;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.api.fingerprint.FingerprintingUtil;
+import xyz.jonesdev.sonar.common.fallback.netty.FallbackTimeoutHandler;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketEncoder;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
 import xyz.jonesdev.sonar.common.util.GeyserUtil;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
 import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;

 import java.net.InetAddress;
 import java.net.InetSocketAddress;
-import java.nio.charset.StandardCharsets;
 import java.util.Map;
-import java.util.Objects;
-import java.util.UUID;
 import java.util.concurrent.TimeUnit;

 import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.*;
-import static xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper.closeWith;
 import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;

@AllArgsConstructor
@@ -52,11 +50,8 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle

  /**
   * Validates and handles incoming handshake packets
-   *
-   * @param hostname Hostname (server address) sent by the client
-   * @param protocol Protocol version number sent by the client
   */
-  protected final void handleHandshake(final @NotNull Channel channel,
+  protected final void handleHandshake(final @NotNull ChannelHandlerContext ctx,
                                       final @NotNull String hostname,
                                       final int protocol) throws Exception {
    // Check if the hostname is invalid
@@ -67,23 +62,15 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
    if (protocolVersion != null) {
      throw QuietDecoderException.INSTANCE;
    }
-    // Store the protocol version
    protocolVersion = ProtocolVersion.fromId(protocol);
-    // Hook the traffic listener
-    channel.pipeline().addFirst(FALLBACK_BANDWIDTH, FallbackBandwidthHandler.INSTANCE);
+    ctx.pipeline().addFirst(FALLBACK_BANDWIDTH, FallbackBandwidthHandler.INSTANCE);
  }

  /**
   * Validates and handles incoming login packets
-   *
-   * @param channel       Forwarded client channel
-   * @param loginPacket   Login packet sent by the client
-   * @param username      Username sent by the client
-   * @param socketAddress Socket address of the client
   */
-  protected final void handleLogin(final @NotNull Channel channel,
-                                   final @NotNull ChannelHandlerContext ctx,
-                                   final @NotNull Runnable loginPacket,
+  protected final void handleLogin(final @NotNull ChannelHandlerContext ctx,
+                                   final @NotNull Runnable initialLoginAction,
                                   final @NotNull String username,
                                   final @NotNull InetSocketAddress socketAddress) throws Exception {
    // Check if the player has already sent a login packet
@@ -91,64 +78,63 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
      throw QuietDecoderException.INSTANCE;
    }
    // Connections from unknown protocol versions will be discarded
-    // as this is the safest way of handling unwanted connections
+    // as this is the safest way of handling unwanted connections.
+    // Sonar does not support snapshots or Minecraft versions older than 1.7.2
    if (protocolVersion.isUnknown()) {
-      // Sonar does not support snapshots or Minecraft versions older than 1.7.2
      throw QuietDecoderException.INSTANCE;
    }
-    // Increase joins per second for the action bar verbose
    GlobalSonarStatistics.countLogin();
-    // Store the username and IP address
    this.username = username;
-    final FallbackInboundHandler inboundHandler = channel.pipeline().get(FallbackInboundHandler.class);
-    Objects.requireNonNull(inboundHandler).setInetAddress(socketAddress.getAddress());
-    final String hostAddress = socketAddress.getAddress().getHostAddress();
+
+    final InetAddress inetAddress = socketAddress.getAddress();
+    ctx.pipeline().get(FallbackInboundHandler.class).setInetAddress(inetAddress);

    // Check if Fallback is already verifying a player with the same IP address
-    if (Sonar.get().getFallback().getConnected().containsKey(inboundHandler.getInetAddress())) {
-      customDisconnect(channel, protocolVersion, alreadyVerifying);
+    if (Sonar.get().getFallback().getConnected().containsKey(inetAddress)) {
+      customDisconnect(ctx.channel(), alreadyVerifying, protocolVersion);
      return;
    }

    // Check if the protocol ID of the player is not allowed to enter the server
-    if (Sonar.get().getConfig().getVerification().getBlacklistedProtocols()
-      .contains(protocolVersion.getProtocol())) {
-      customDisconnect(channel, protocolVersion, protocolBlacklisted);
+    if (Sonar.get().getConfig().getVerification().getBlacklistedProtocols().contains(protocolVersion.getProtocol())) {
+      customDisconnect(ctx.channel(), protocolBlacklisted, protocolVersion);
      return;
    }

+    final String hostAddress = inetAddress.getHostAddress();
    // Check if the player failed the verification too many times
-    final int score = Sonar.get().getFallback().getBlacklist().asMap().getOrDefault(hostAddress, 0);
    final int limit = Sonar.get().getConfig().getVerification().getBlacklistThreshold();
-    if (score >= limit) {
-      customDisconnect(channel, protocolVersion, blacklisted);
-      return;
+    if (limit > 0) {
+      final int score = Sonar.get().getFallback().getBlacklist().asMap().getOrDefault(hostAddress, 0);
+      if (score >= limit) {
+        customDisconnect(ctx.channel(), blacklisted, protocolVersion);
+        return;
+      }
    }

    // Don't continue the verification process if the verification is disabled
    if (!Sonar.get().getFallback().shouldVerifyNewPlayers()) {
-      initialLogin(ctx, inboundHandler.getInetAddress(), loginPacket);
+      initialLogin(ctx.channel(), inetAddress, initialLoginAction);
      return;
    }

    // Completely skip Geyser connections if configured
-    final boolean geyser = GeyserUtil.isGeyserConnection(channel, socketAddress);
+    final boolean geyser = GeyserUtil.isGeyserConnection(ctx.channel(), socketAddress);
    if (geyser && !Sonar.get().getConfig().getVerification().isCheckGeyser()) {
-      initialLogin(ctx, inboundHandler.getInetAddress(), loginPacket);
+      initialLogin(ctx.channel(), inetAddress, initialLoginAction);
      return;
    }

    // Make sure we actually have to verify the player
-    final String offlineUuidString = "OfflinePlayer:" + username;
-    final UUID offlineUuid = UUID.nameUUIDFromBytes(offlineUuidString.getBytes(StandardCharsets.UTF_8));
-    if (Sonar.get().getVerifiedPlayerController().has(hostAddress, offlineUuid)) {
-      initialLogin(ctx, inboundHandler.getInetAddress(), loginPacket);
+    final String fingerprint = FingerprintingUtil.getFingerprint(username, hostAddress);
+    if (Sonar.get().getVerifiedPlayerController().getCache().contains(fingerprint)) {
+      initialLogin(ctx.channel(), inetAddress, initialLoginAction);
      return;
    }

    // Check if the IP address is currently being rate-limited
-    if (!Sonar.get().getFallback().getRatelimiter().attempt(inboundHandler.getInetAddress())) {
-      customDisconnect(channel, protocolVersion, reconnectedTooFast);
+    if (!Sonar.get().getFallback().getRatelimiter().attempt(inetAddress)) {
+      customDisconnect(ctx.channel(), reconnectedTooFast, protocolVersion);
      return;
    }

@@ -156,10 +142,10 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
    rewriteProtocol(ctx, channelRemovalListener);

    // Queue the connection for further processing
-    Sonar.get().getFallback().getQueue().getPlayers().compute(inboundHandler.getInetAddress(), (inetAddress, runnable) -> {
+    Sonar.get().getFallback().getQueue().getPlayers().compute(inetAddress, (__, runnable) -> {
      // Check if the player is already queued since we don't want bots to flood the queue
      if (runnable != null) {
-        customDisconnect(channel, protocolVersion, alreadyQueued);
+        customDisconnect(ctx.channel(), alreadyQueued, protocolVersion);
        // Remove other instances of this IP address from the queue
        return null;
      }
@@ -167,21 +153,42 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
      return () -> {
        // Check if the username matches the valid name regex to prevent
        // UTF-16 names or other types of exploits
-        if (!Sonar.get().getConfig().getVerification().getValidNameRegex()
-          .matcher(username).matches()) {
-          customDisconnect(channel, protocolVersion, invalidUsername);
+        if (!Sonar.get().getConfig().getVerification().getValidNameRegex().matcher(username).matches()) {
+          customDisconnect(ctx.channel(), invalidUsername, protocolVersion);
          return;
        }

-        // Create an instance for the Fallback connection
-        final FallbackUser user = new FallbackUserWrapper(
-          channel, inboundHandler.getInetAddress(), protocolVersion, offlineUuid, geyser);
-        // Let the verification handler take over the channel
-        user.hijack(username, offlineUuid);
+        // Create an instance for the user and let the verification handler take over the channel
+        new FallbackUserWrapper(ctx.channel(), inetAddress, protocolVersion, username, fingerprint, geyser);
      };
    });
  }

+  /**
+   * Executes the maximum accounts per IP limit check before letting the player join
+   */
+  protected final void initialLogin(final @NotNull Channel channel,
+                                    final @NotNull InetAddress inetAddress,
+                                    final @NotNull Runnable loginPacket) throws Exception {
+    Sonar.get().getFallback().getOnline().compute(inetAddress, (__, count) -> {
+      final int maxOnlinePerIp = Sonar.get().getConfig().getMaxOnlinePerIp();
+      // Skip the maximum online per IP check if it's disabled in the configuration
+      if (count != null && maxOnlinePerIp > 0) {
+        // Check if the number of online players using the same IP address as
+        // the connecting player is greater than the configured amount
+        if (count >= maxOnlinePerIp) {
+          customDisconnect(channel, tooManyOnlinePerIP, protocolVersion);
+          return count + 1;
+        }
+      }
+
+      // Let the server know about the login packet
+      loginPacket.run();
+      // Increment the number of accounts with the same IP
+      return count == null ? 1 : count + 1;
+    });
+  }
+
  /**
   * Removes all pipelines and rewrites them using our custom handlers
   */
@@ -206,58 +213,24 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
      TimeUnit.MILLISECONDS));
  }

-  /**
-   * Executes the maximum accounts per IP limit check before letting the player join
-   *
-   * @param ctx         Forwarded client channel context
-   * @param inetAddress Resolved client IP address
-   * @param loginPacket Login packet sent by the client
-   */
-  protected final void initialLogin(final @NotNull ChannelHandlerContext ctx,
-                                    final @NotNull InetAddress inetAddress,
-                                    final @NotNull Runnable loginPacket) throws Exception {
-    // Increment the number of accounts with the same IP
-    Sonar.get().getFallback().getOnline().compute(inetAddress, (k, v) -> v == null ? 1 : v + 1);
-
-    final int maxOnlinePerIp = Sonar.get().getConfig().getMaxOnlinePerIp();
-    // Skip the maximum online per IP check if it's disabled in the configuration
-    if (maxOnlinePerIp > 0) {
-      // Check if the number of online players using the same IP address as
-      // the connecting player is greater than the configured amount
-      final int onlinePerIp = Sonar.get().getFallback().getOnline().getOrDefault(inetAddress, 0);
-      if (onlinePerIp >= maxOnlinePerIp) {
-        customDisconnect(ctx.channel(), protocolVersion, tooManyOnlinePerIP);
-        return;
+  private static void customDisconnect(final @NotNull Channel channel,
+                                       final @NotNull FallbackPacket packet,
+                                       final @NotNull ProtocolVersion protocolVersion) {
+    if (channel.isActive()) {
+      if (channel.eventLoop().inEventLoop()) {
+        _customDisconnect(channel, packet, protocolVersion);
+      } else {
+        channel.eventLoop().execute(() -> _customDisconnect(channel, packet, protocolVersion));
      }
    }
-
-    // Let the server know about the login packet
-    loginPacket.run();
  }

  /**
   * Disconnect the player before verification (during login)
-   * by replacing the encoder before running the method.
-   *
-   * @param packet          Disconnect packet
-   * @param channel         Channel of the player
-   * @param protocolVersion Protocol version of the player
   */
-  private void customDisconnect(final @NotNull Channel channel,
-                                final @NotNull ProtocolVersion protocolVersion,
-                                final @NotNull FallbackPacket packet) {
-    if (channel.isActive()) {
-      if (channel.eventLoop().inEventLoop()) {
-        _customDisconnect(channel, protocolVersion, packet);
-      } else {
-        channel.eventLoop().execute(() -> _customDisconnect(channel, protocolVersion, packet));
-      }
-    }
-  }
-
-  private void _customDisconnect(final @NotNull Channel channel,
-                                 final @NotNull ProtocolVersion protocolVersion,
-                                 final @NotNull FallbackPacket packet) {
+  private static void _customDisconnect(final @NotNull Channel channel,
+                                        final @NotNull FallbackPacket packet,
+                                        final @NotNull ProtocolVersion protocolVersion) {
    // Remove the connection handler pipeline to completely take over the channel
    final String handler = Sonar.get().getPlatform().getConnectionHandler();
    if (channel.pipeline().context(handler) != null) {
@@ -272,7 +245,7 @@ public abstract class FallbackInboundHandlerAdapter extends ChannelInboundHandle
        final FallbackPacketEncoder newEncoder = new FallbackPacketEncoder(protocolVersion);
        channel.pipeline().replace(encoder, FALLBACK_PACKET_ENCODER, newEncoder);
      }
-      closeWith(channel, protocolVersion, packet);
+      ProtocolUtil.closeWith(channel, protocolVersion, packet);
    } else {
      channel.close();
    }
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback;
+
+import io.netty.channel.Channel;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import lombok.experimental.Accessors;
+import net.kyori.adventure.text.Component;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.event.impl.UserVerifyJoinEvent;
+import xyz.jonesdev.sonar.api.fallback.FallbackUser;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.api.timer.SystemTimer;
+import xyz.jonesdev.sonar.common.fallback.netty.FallbackTailExceptionsHandler;
+import xyz.jonesdev.sonar.common.fallback.netty.FallbackVarInt21FrameDecoder;
+import xyz.jonesdev.sonar.common.fallback.netty.FallbackVarIntLengthEncoder;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketDecoder;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketEncoder;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.DisconnectPacket;
+import xyz.jonesdev.sonar.common.fallback.verification.FallbackPreJoinHandler;
+import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
+
+import java.net.InetAddress;
+
+import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.*;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.GAME;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.LOGIN;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.loginSuccess;
+
+@Getter
+@ToString(of = {"protocolVersion", "inetAddress", "geyser"})
+public final class FallbackUserWrapper implements FallbackUser {
+  @Accessors(fluent = true)
+  private final Channel channel;
+  private final InetAddress inetAddress;
+  private final ProtocolVersion protocolVersion;
+  private final String fingerprint;
+  private final String username;
+  private final boolean geyser;
+  private final SystemTimer loginTimer;
+  @Setter
+  private boolean forceCaptcha;
+
+  public FallbackUserWrapper(final @NotNull Channel channel,
+                             final @NotNull InetAddress inetAddress,
+                             final @NotNull ProtocolVersion protocolVersion,
+                             final @NotNull String username,
+                             final @NotNull String fingerprint,
+                             final boolean geyser) {
+    this.channel = channel;
+    this.inetAddress = inetAddress;
+    this.protocolVersion = protocolVersion;
+    this.username = username;
+    this.fingerprint = fingerprint;
+    this.geyser = geyser;
+    this.loginTimer = new SystemTimer();
+
+    GlobalSonarStatistics.totalAttemptedVerifications++;
+
+    if (Sonar.get().getConfig().getVerification().isLogConnections()
+      && (Sonar.get().getAttackTracker().getCurrentAttack() == null
+      || Sonar.get().getConfig().getVerification().isLogDuringAttack())) {
+      Sonar.get().getLogger().info(
+        Sonar.get().getConfig().getMessagesConfig().getString("verification.logs.connection")
+          .replace("<username>", username)
+          .replace("<ip>", Sonar.get().getConfig().formatAddress(inetAddress))
+          .replace("<protocol>", String.valueOf(protocolVersion.getProtocol())));
+    }
+
+    // Call the VerifyJoinEvent for external API usage
+    Sonar.get().getEventManager().publish(new UserVerifyJoinEvent(this));
+
+    // Run this in the channel's event loop to avoid issues
+    channel.eventLoop().execute(() -> {
+      // Make sure the channel is still active
+      if (!channel.isActive()) {
+        return;
+      }
+
+      // Mark the player as connected by caching them in a map of verifying players
+      Sonar.get().getFallback().getConnected().compute(inetAddress, (__, v) -> true);
+
+      // Replace normal encoder to allow custom packets
+      // TODO: recode injection
+      final FallbackPacketEncoder newEncoder = new FallbackPacketEncoder(protocolVersion);
+      channel.pipeline().addFirst(FALLBACK_FRAME_ENCODER, FallbackVarIntLengthEncoder.INSTANCE);
+      channel.pipeline().addLast(FALLBACK_PACKET_ENCODER, newEncoder);
+
+      // Replace normal decoder to allow custom packets
+      // TODO: recode injection
+      final FallbackPacketDecoder newDecoder = new FallbackPacketDecoder(protocolVersion);
+      channel.pipeline().addFirst(FALLBACK_FRAME_DECODER, new FallbackVarInt21FrameDecoder());
+      channel.pipeline().addLast(FALLBACK_PACKET_DECODER, newDecoder);
+
+      // We're sending the LoginSuccess packet now
+      newDecoder.updateRegistry(LOGIN);
+      newEncoder.updateRegistry(LOGIN);
+      // Send LoginSuccess packet to make the client think they are joining the server
+      write(loginSuccess);
+
+      // pre-1.20.2 clients do not have the configuration stage
+      if (protocolVersion.lessThan(ProtocolVersion.MINECRAFT_1_20_2)) {
+        newDecoder.updateRegistry(GAME);
+        newEncoder.updateRegistry(GAME);
+      }
+
+      // Listen for all incoming packets by setting the packet listener
+      newDecoder.setListener(new FallbackPreJoinHandler(this));
+
+      // Make sure to catch all exceptions during the verification
+      // TODO: recode injection
+      channel.pipeline().addLast(FALLBACK_TAIL_EXCEPTIONS, FallbackTailExceptionsHandler.INSTANCE);
+    });
+  }
+
+  @Override
+  public void disconnect(final @NotNull Component reason) {
+    final FallbackPacketEncoder encoder = channel.pipeline().get(FallbackPacketEncoder.class);
+    final boolean duringLogin = encoder != null && encoder.getPacketRegistry() == LOGIN;
+    ProtocolUtil.closeWith(channel, protocolVersion, DisconnectPacket.create(reason, duringLogin));
+  }
+}
@@ -24,9 +24,9 @@ import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.SonarPlatform;
-import xyz.jonesdev.sonar.api.exception.ReflectiveOperationException;
 import xyz.jonesdev.sonar.common.fallback.FallbackInboundHandler;
 import xyz.jonesdev.sonar.common.util.FakeChannelUtil;
+import xyz.jonesdev.sonar.common.util.exception.ReflectiveOperationException;

 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
@@ -15,7 +15,7 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.common.fallback;
+package xyz.jonesdev.sonar.common.fallback.netty;

 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.timeout.IdleStateEvent;
@@ -26,12 +26,12 @@ import java.util.concurrent.TimeUnit;

 public final class FallbackTimeoutHandler extends IdleStateHandler {
  public FallbackTimeoutHandler(final int readTimeout, final int writeTimeout, final TimeUnit timeUnit) {
-    super(readTimeout, writeTimeout, 0L, timeUnit);
+    super(false, readTimeout, writeTimeout, 0L, timeUnit);
  }

  @Override
  protected void channelIdle(final @NotNull ChannelHandlerContext ctx,
-                             final @NotNull IdleStateEvent idleStateEvent) throws Exception {
+                             final IdleStateEvent idleStateEvent) throws Exception {
    // The netty (default) ReadTimeoutHandler would normally just throw an Exception
    // The default ReadTimeoutHandler does only check for the boolean 'closed' and
    // still throws the Exception even if the channel is closed
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.netty;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.ByteToMessageDecoder;
+import io.netty.handler.codec.DecoderException;
+import io.netty.util.ByteProcessor;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
+import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;
+
+import java.util.List;
+
+// https://github.com/PaperMC/Velocity/blob/dev/3.0.0/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintFrameDecoder.java
+public final class FallbackVarInt21FrameDecoder extends ByteToMessageDecoder {
+
+  @Override
+  protected void decode(final @NotNull ChannelHandlerContext ctx,
+                        final @NotNull ByteBuf byteBuf,
+                        final @NotNull List<Object> out) throws Exception {
+    if (!ctx.channel().isActive()) {
+      byteBuf.clear();
+      return;
+    }
+
+    // Skip any runs of 0x00 we might find
+    final int packetStart = byteBuf.forEachByte(ByteProcessor.FIND_NON_NUL);
+    if (packetStart == -1) {
+      return;
+    }
+    byteBuf.readerIndex(packetStart);
+
+    // Try to read the length of the packet
+    byteBuf.markReaderIndex();
+    final int preIndex = byteBuf.readerIndex();
+    final int length = readRawVarInt21(byteBuf);
+    if (preIndex == byteBuf.readerIndex()) {
+      return;
+    }
+    if (length <= 0) {
+      throw ProtocolUtil.DEBUG ? new DecoderException("Bad VarInt length: " + length) : QuietDecoderException.INSTANCE;
+    }
+
+    if (byteBuf.readableBytes() < length) {
+      byteBuf.resetReaderIndex();
+    } else {
+      out.add(byteBuf.readRetainedSlice(length));
+    }
+  }
+
+  private static int readRawVarInt21(final @NotNull ByteBuf byteBuf) {
+    if (byteBuf.readableBytes() < 4) {
+      return readRawVarIntSmallBuffer(byteBuf);
+    }
+
+    // take the last three bytes and check if any of them have the high bit set
+    final int wholeOrMore = byteBuf.getIntLE(byteBuf.readerIndex());
+    final int atStop = ~wholeOrMore & 0x808080;
+    if (atStop == 0) {
+      throw ProtocolUtil.DEBUG ? new DecoderException("VarInt too big") : QuietDecoderException.INSTANCE;
+    }
+
+    final int bitsToKeep = Integer.numberOfTrailingZeros(atStop) + 1;
+    byteBuf.skipBytes(bitsToKeep >> 3);
+
+    // https://github.com/netty/netty/pull/14050#issuecomment-2107750734
+    int preservedBytes = wholeOrMore & (atStop ^ (atStop - 1));
+
+    // https://github.com/netty/netty/pull/14050#discussion_r1597896639
+    preservedBytes = (preservedBytes & 0x007F007F) | ((preservedBytes & 0x00007F00) >> 1);
+    preservedBytes = (preservedBytes & 0x00003FFF) | ((preservedBytes & 0x3FFF0000) >> 2);
+    return preservedBytes;
+  }
+
+  private static int readRawVarIntSmallBuffer(final @NotNull ByteBuf byteBuf) {
+    if (!byteBuf.isReadable()) {
+      return 0;
+    }
+    byteBuf.markReaderIndex();
+
+    byte tmp = byteBuf.readByte();
+    if (tmp >= 0) {
+      return tmp;
+    }
+    int result = tmp & 0x7F;
+    if (!byteBuf.isReadable()) {
+      byteBuf.resetReaderIndex();
+      return 0;
+    }
+    if ((tmp = byteBuf.readByte()) >= 0) {
+      return result | tmp << 7;
+    }
+    result |= (tmp & 0x7F) << 7;
+    if (!byteBuf.isReadable()) {
+      byteBuf.resetReaderIndex();
+      return 0;
+    }
+    if ((tmp = byteBuf.readByte()) >= 0) {
+      return result | tmp << 14;
+    }
+    return result | (tmp & 0x7F) << 14;
+  }
+}
@@ -20,30 +20,28 @@ package xyz.jonesdev.sonar.common.fallback.netty;
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
-import io.netty.handler.codec.MessageToByteEncoder;
+import io.netty.handler.codec.MessageToMessageEncoder;
 import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;

-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.varIntBytes;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+import java.util.List;

 // https://github.com/PaperMC/Velocity/blob/dev/3.0.0/proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftVarintLengthEncoder.java
@ChannelHandler.Sharable
-public final class FallbackVarInt21FrameEncoder extends MessageToByteEncoder<ByteBuf> {
-  public static final FallbackVarInt21FrameEncoder INSTANCE = new FallbackVarInt21FrameEncoder();
+public final class FallbackVarIntLengthEncoder extends MessageToMessageEncoder<ByteBuf> {
+  public static final FallbackVarIntLengthEncoder INSTANCE = new FallbackVarIntLengthEncoder();

  @Override
  protected void encode(final @NotNull ChannelHandlerContext ctx,
-                        final @NotNull ByteBuf msg,
-                        final @NotNull ByteBuf out) throws Exception {
-    writeVarInt(out, msg.readableBytes());
-    out.writeBytes(msg);
-  }
+                        final @NotNull ByteBuf byteBuf,
+                        final @NotNull List<Object> out) throws Exception {
+    final int readableBytes = byteBuf.readableBytes();
+    final int length = ProtocolUtil.varIntBytes(readableBytes);

-  @Override
-  protected ByteBuf allocateBuffer(final @NotNull ChannelHandlerContext ctx,
-                                   final @NotNull ByteBuf msg,
-                                   final boolean preferDirect) throws Exception {
-    final int anticipatedRequiredCapacity = varIntBytes(msg.readableBytes()) + msg.readableBytes();
-    return ctx.alloc().buffer(anticipatedRequiredCapacity);
+    final ByteBuf lenBuf = ctx.alloc().buffer(length);
+
+    ProtocolUtil.writeVarInt(lenBuf, readableBytes);
+    out.add(lenBuf);
+    out.add(byteBuf.retain());
  }
 }
@@ -15,11 +15,14 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.common.fallback.protocol.captcha;
+package xyz.jonesdev.sonar.common.fallback.protocol;

 import lombok.experimental.UtilityClass;
 import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.event.impl.CaptchaGenerationEndEvent;
 import xyz.jonesdev.sonar.api.timer.SystemTimer;
+import xyz.jonesdev.sonar.common.fallback.protocol.map.MapCaptchaInfo;
+import xyz.jonesdev.sonar.common.fallback.protocol.map.MapColorPalette;

 import java.awt.image.BufferedImage;
 import java.util.Random;
@@ -54,18 +57,18 @@ public class CaptchaPreparer {
    // Prepare everything asynchronously
    PREPARATION_SERVICE.execute(() -> {
      for (preparedAmount = 0; preparedAmount < precomputeAmount;) {
-        // Generate CAPTCHA answer
+        // Generate CAPTCHA
        final char[] answer = new char[3 + RANDOM.nextInt(2)];
        for (int j = 0; j < answer.length; j++) {
          answer[j] = alphabet[RANDOM.nextInt(alphabet.length)];
        }
        final BufferedImage image = Sonar.get().getFallback().getCaptchaGenerator().createImage(answer);
        // Convert and cache converted Minecraft map bytes
-        final int[] buffer = MapColorPalette.getBufferFromImage(image);
-        cached[preparedAmount++] = new MapCaptchaInfo(new String(answer), buffer);
+        cached[preparedAmount++] = new MapCaptchaInfo(new String(answer), MapColorPalette.imageToBuffer(image));
      }

      Sonar.get().getLogger().info("Finished preparing {} CAPTCHA answers ({}s)!", preparedAmount, timer);
+      Sonar.get().getEventManager().publish(new CaptchaGenerationEndEvent(timer, preparedAmount));
    });
  }

@@ -21,31 +21,25 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.handler.codec.DecoderException;
+import lombok.RequiredArgsConstructor;
 import lombok.Setter;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
 import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;

-import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_20_2;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.Direction.SERVERBOUND;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.GAME;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.LOGIN;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.DEBUG;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.maxTotalPacketsSent;

+@RequiredArgsConstructor
 public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {
  private final ProtocolVersion protocolVersion;
  private FallbackPacketRegistry.ProtocolRegistry registry;
  @Setter
  private FallbackPacketListener listener;
-
-  public FallbackPacketDecoder(final @NotNull ProtocolVersion protocolVersion) {
-    this.protocolVersion = protocolVersion;
-    updateRegistry(protocolVersion.compareTo(MINECRAFT_1_20_2) >= 0 ? LOGIN : GAME);
-  }
+  private int totalPacketsSent;

  public void updateRegistry(final @NotNull FallbackPacketRegistry registry) {
-    this.registry = registry.getProtocolRegistry(SERVERBOUND, protocolVersion);
+    this.registry = registry.getProtocolRegistry(FallbackPacketRegistry.Direction.SERVERBOUND, protocolVersion);
  }

  @Override
@@ -62,8 +56,13 @@ public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {
          return;
        }

+        // Don't allow the player to spam packets to overload netty
+        if (++totalPacketsSent > maxTotalPacketsSent) {
+          throw ProtocolUtil.DEBUG ? new DecoderException("Sent too many packets") : QuietDecoderException.INSTANCE;
+        }
+
        // Read the packet ID and then create the packet from it
-        final int packetId = readVarInt(byteBuf);
+        final int packetId = ProtocolUtil.readVarInt(byteBuf);
        final FallbackPacket packet = registry.createPacket(packetId);

        // Skip the packet if it's not registered within Sonar's packet registry
@@ -78,21 +77,21 @@ public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {
          // Try to decode the packet for the given protocol version
          packet.decode(byteBuf, protocolVersion);
        } catch (Throwable throwable) {
-          throw DEBUG ? new DecoderException(throwable) : QuietDecoderException.INSTANCE;
+          throw ProtocolUtil.DEBUG ? new DecoderException(throwable) : QuietDecoderException.INSTANCE;
        }

        // Check if the packet still has bytes left after we decoded it
        if (byteBuf.isReadable()) {
-          throw DEBUG ? new DecoderException("Could not read packet to end") : QuietDecoderException.INSTANCE;
+          throw ProtocolUtil.DEBUG ? new DecoderException("Could not read packet to end ("
+            + byteBuf.readableBytes() + " bytes left)"): QuietDecoderException.INSTANCE;
        }

        // Let our verification handler process the packet
        if (listener != null) {
          listener.handle(packet);
+          // Make sure to let the timeout handler know about this packet
+          ctx.fireChannelRead(packet);
        }
-
-        // Fire channel read to avoid timeout
-        ctx.fireChannelRead(packet);
      } finally {
        // Release the ByteBuf to avoid memory leaks
        byteBuf.release();
@@ -102,14 +101,16 @@ public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {

  private void checkPacketSize(final @NotNull ByteBuf byteBuf,
                               final @NotNull FallbackPacket packet) throws Exception {
+    final int packetSize = byteBuf.readableBytes();
    final int expectedMaxLen = packet.expectedMaxLength(byteBuf, protocolVersion);
-    if (expectedMaxLen != -1 && byteBuf.readableBytes() > expectedMaxLen) {
-      throw DEBUG ? new DecoderException("Packet too large") : QuietDecoderException.INSTANCE;
+    if (expectedMaxLen != -1 && packetSize > expectedMaxLen) {
+      throw ProtocolUtil.DEBUG ? new DecoderException("Packet too large: " + packetSize + " max: " + expectedMaxLen)
+        : QuietDecoderException.INSTANCE;
    }
-
    final int expectedMinLen = packet.expectedMinLength(byteBuf, protocolVersion);
-    if (expectedMinLen != -1 && byteBuf.readableBytes() < expectedMinLen) {
-      throw DEBUG ? new DecoderException("Packet too small") : QuietDecoderException.INSTANCE;
+    if (expectedMinLen != -1 && packetSize < expectedMinLen) {
+      throw ProtocolUtil.DEBUG ? new DecoderException("Packet too small: " + packetSize + " min: " + expectedMinLen)
+        : QuietDecoderException.INSTANCE;
    }
  }
 }
@@ -21,37 +21,31 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.MessageToByteEncoder;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;

-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.Direction.CLIENTBOUND;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.LOGIN;
-import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
-
+@RequiredArgsConstructor
 public final class FallbackPacketEncoder extends MessageToByteEncoder<FallbackPacket> {
  private final ProtocolVersion protocolVersion;
  @Getter
  private FallbackPacketRegistry packetRegistry;
  private FallbackPacketRegistry.ProtocolRegistry protocolRegistry;

-  public FallbackPacketEncoder(final ProtocolVersion protocolVersion) {
-    this.protocolVersion = protocolVersion;
-    updateRegistry(LOGIN);
-  }
-
  public void updateRegistry(final @NotNull FallbackPacketRegistry packetRegistry) {
    this.packetRegistry = packetRegistry;
-    this.protocolRegistry = packetRegistry.getProtocolRegistry(CLIENTBOUND, protocolVersion);
+    this.protocolRegistry = packetRegistry.getProtocolRegistry(FallbackPacketRegistry.Direction.CLIENTBOUND, protocolVersion);
  }

  @Override
  protected void encode(final ChannelHandlerContext ctx,
                        final @NotNull FallbackPacket packet,
-                        final ByteBuf out) throws Exception {
-    final FallbackPacket originalPacket = packet instanceof FallbackPacketSnapshot
-      ? ((FallbackPacketSnapshot) packet).getOriginalPacket() : packet;
+                        final @NotNull ByteBuf out) throws Exception {
+    final Class<? extends FallbackPacket> originalPacket = packet instanceof FallbackPacketSnapshot
+      ? ((FallbackPacketSnapshot) packet).getOriginalPacketClass() : packet.getClass();
    final int packetId = protocolRegistry.getPacketId(originalPacket);
-    writeVarInt(out, packetId);
+    ProtocolUtil.writeVarInt(out, packetId);
    packet.encode(out, protocolVersion);
  }
 }
@@ -20,8 +20,8 @@ package xyz.jonesdev.sonar.common.fallback.protocol;
 import io.netty.util.collection.IntObjectHashMap;
 import io.netty.util.collection.IntObjectMap;
 import lombok.AccessLevel;
-import lombok.Data;
 import lombok.RequiredArgsConstructor;
+import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.configuration.FinishConfigurationPacket;
@@ -32,7 +32,10 @@ import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginStartPacke
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginSuccessPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;

-import java.util.*;
+import java.util.EnumMap;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.function.Supplier;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
@@ -64,11 +67,11 @@ public enum FallbackPacketRegistry {
        map(0x01, MINECRAFT_1_20_2, true),
        map(0x02, MINECRAFT_1_20_5, true));
      clientbound.register(FinishConfigurationPacket.class, FinishConfigurationPacket::new,
-        map(0x02, MINECRAFT_1_20_2, false),
-        map(0x03, MINECRAFT_1_20_5, false));
+        map(0x02, MINECRAFT_1_20_2, true),
+        map(0x03, MINECRAFT_1_20_5, true));
      clientbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
-        map(0x03, MINECRAFT_1_20_2, false),
-        map(0x04, MINECRAFT_1_20_5, false));
+        map(0x03, MINECRAFT_1_20_2, true),
+        map(0x04, MINECRAFT_1_20_5, true));
      clientbound.register(RegistryDataPacket.class, RegistryDataPacket::new,
        map(0x05, MINECRAFT_1_20_2, true),
        map(0x07, MINECRAFT_1_20_5, true));
@@ -102,22 +105,24 @@ public enum FallbackPacketRegistry {
        map(0x24, MINECRAFT_1_19_3, true),
        map(0x28, MINECRAFT_1_19_4, true),
        map(0x29, MINECRAFT_1_20_2, true),
-        map(0x2B, MINECRAFT_1_20_5, true));
+        map(0x2B, MINECRAFT_1_20_5, true),
+        map(0x2C, MINECRAFT_1_21_2, true));
      clientbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
-        map(0x00, MINECRAFT_1_7_2, false),
-        map(0x1F, MINECRAFT_1_9, false),
-        map(0x21, MINECRAFT_1_13, false),
-        map(0x20, MINECRAFT_1_14, false),
-        map(0x21, MINECRAFT_1_15, false),
-        map(0x20, MINECRAFT_1_16, false),
-        map(0x1F, MINECRAFT_1_16_2, false),
-        map(0x21, MINECRAFT_1_17, false),
-        map(0x1E, MINECRAFT_1_19, false),
-        map(0x20, MINECRAFT_1_19_1, false),
-        map(0x1F, MINECRAFT_1_19_3, false),
-        map(0x23, MINECRAFT_1_19_4, false),
-        map(0x24, MINECRAFT_1_20_2, false),
-        map(0x26, MINECRAFT_1_20_5, false));
+        map(0x00, MINECRAFT_1_7_2, true),
+        map(0x1F, MINECRAFT_1_9, true),
+        map(0x21, MINECRAFT_1_13, true),
+        map(0x20, MINECRAFT_1_14, true),
+        map(0x21, MINECRAFT_1_15, true),
+        map(0x20, MINECRAFT_1_16, true),
+        map(0x1F, MINECRAFT_1_16_2, true),
+        map(0x21, MINECRAFT_1_17, true),
+        map(0x1E, MINECRAFT_1_19, true),
+        map(0x20, MINECRAFT_1_19_1, true),
+        map(0x1F, MINECRAFT_1_19_3, true),
+        map(0x23, MINECRAFT_1_19_4, true),
+        map(0x24, MINECRAFT_1_20_2, true),
+        map(0x26, MINECRAFT_1_20_5, true),
+        map(0x27, MINECRAFT_1_21_2, true));
      clientbound.register(DisconnectPacket.class, DisconnectPacket::new,
        map(0x40, MINECRAFT_1_7_2, true),
        map(0x1A, MINECRAFT_1_9, true),
@@ -148,7 +153,8 @@ public enum FallbackPacketRegistry {
        map(0x38, MINECRAFT_1_19_3, true),
        map(0x3C, MINECRAFT_1_19_4, true),
        map(0x3E, MINECRAFT_1_20_2, true),
-        map(0x40, MINECRAFT_1_20_5, true));
+        map(0x40, MINECRAFT_1_20_5, true),
+        map(0x42, MINECRAFT_1_21_2, true));
      clientbound.register(PlayerAbilitiesPacket.class, PlayerAbilitiesPacket::new,
        map(0x39, MINECRAFT_1_7_2, true),
        map(0x2B, MINECRAFT_1_9, true),
@@ -164,7 +170,8 @@ public enum FallbackPacketRegistry {
        map(0x30, MINECRAFT_1_19_3, true),
        map(0x34, MINECRAFT_1_19_4, true),
        map(0x36, MINECRAFT_1_20_2, true),
-        map(0x38, MINECRAFT_1_20_5, true));
+        map(0x38, MINECRAFT_1_20_5, true),
+        map(0x3A, MINECRAFT_1_21_2, true));
      clientbound.register(ChunkDataPacket.class, ChunkDataPacket::new,
        map(0x21, MINECRAFT_1_7_2, true),
        map(0x20, MINECRAFT_1_9, true),
@@ -179,7 +186,8 @@ public enum FallbackPacketRegistry {
        map(0x20, MINECRAFT_1_19_3, true),
        map(0x24, MINECRAFT_1_19_4, true),
        map(0x25, MINECRAFT_1_20_2, true),
-        map(0x27, MINECRAFT_1_20_5, true));
+        map(0x27, MINECRAFT_1_20_5, true),
+        map(0x28, MINECRAFT_1_21_2, true));
      clientbound.register(RemoveEntitiesPacket.class, RemoveEntitiesPacket::new,
        map(0x13, MINECRAFT_1_7_2, true),
        map(0x30, MINECRAFT_1_9, true),
@@ -197,7 +205,8 @@ public enum FallbackPacketRegistry {
        map(0x3E, MINECRAFT_1_19_4, true),
        map(0x3E, MINECRAFT_1_19_4, true),
        map(0x40, MINECRAFT_1_20_2, true),
-        map(0x42, MINECRAFT_1_20_5, true));
+        map(0x42, MINECRAFT_1_20_5, true),
+        map(0x47, MINECRAFT_1_21_2, true));
      clientbound.register(SetPassengersPacket.class, SetPassengersPacket::new,
        map(0x1B, MINECRAFT_1_7_2, true),
        map(0x40, MINECRAFT_1_9, true),
@@ -212,27 +221,27 @@ public enum FallbackPacketRegistry {
        map(0x59, MINECRAFT_1_19_4, true),
        map(0x5B, MINECRAFT_1_20_2, true),
        map(0x5D, MINECRAFT_1_20_3, true),
-        map(0x5F, MINECRAFT_1_20_5, true));
+        map(0x5F, MINECRAFT_1_20_5, true),
+        map(0x65, MINECRAFT_1_21_2, true));
+      clientbound.register(VehicleMovePacket.class, VehicleMovePacket::new,
+        map(0x29, MINECRAFT_1_9, true),
+        map(0x2B, MINECRAFT_1_13, true),
+        map(0x2C, MINECRAFT_1_14, true),
+        map(0x2D, MINECRAFT_1_15, true),
+        map(0x2C, MINECRAFT_1_16, true),
+        map(0x2B, MINECRAFT_1_16_2, true),
+        map(0x2C, MINECRAFT_1_17, true),
+        map(0x29, MINECRAFT_1_19, true),
+        map(0x2B, MINECRAFT_1_19_1, true),
+        map(0x2A, MINECRAFT_1_19_3, true),
+        map(0x2E, MINECRAFT_1_19_4, true),
+        map(0x2F, MINECRAFT_1_20_2, true),
+        map(0x31, MINECRAFT_1_20_5, true),
+        map(0x33, MINECRAFT_1_21_2, true));
      clientbound.register(SpawnEntityPacket.class, SpawnEntityPacket::new,
        map(0x0E, MINECRAFT_1_7_2, true),
        map(0x00, MINECRAFT_1_9, true),
        map(0x01, MINECRAFT_1_19_4, true));
-      clientbound.register(PlayerInfoPacket.class, PlayerInfoPacket::new,
-        map(0x38, MINECRAFT_1_7_2, true),
-        map(0x2D, MINECRAFT_1_9, true),
-        map(0x2E, MINECRAFT_1_12_1, true),
-        map(0x30, MINECRAFT_1_13, true),
-        map(0x33, MINECRAFT_1_14, true),
-        map(0x34, MINECRAFT_1_15, true),
-        map(0x33, MINECRAFT_1_16, true),
-        map(0x32, MINECRAFT_1_16_2, true),
-        map(0x36, MINECRAFT_1_17, true),
-        map(0x34, MINECRAFT_1_19, true),
-        map(0x37, MINECRAFT_1_19_1, true),
-        map(0x36, MINECRAFT_1_19_3, true),
-        map(0x3A, MINECRAFT_1_19_4, true),
-        map(0x3C, MINECRAFT_1_20_2, true),
-        map(0x3E, MINECRAFT_1_20_5, true));
      clientbound.register(UpdateSectionBlocksPacket.class, UpdateSectionBlocksPacket::new,
        map(0x22, MINECRAFT_1_7_2, true),
        map(0x10, MINECRAFT_1_9, true),
@@ -247,7 +256,8 @@ public enum FallbackPacketRegistry {
        map(0x43, MINECRAFT_1_19_4, true),
        map(0x45, MINECRAFT_1_20_2, true),
        map(0x47, MINECRAFT_1_20_3, true),
-        map(0x49, MINECRAFT_1_20_5, true));
+        map(0x49, MINECRAFT_1_20_5, true),
+        map(0x4E, MINECRAFT_1_21_2, true));
      clientbound.register(TransactionPacket.class, TransactionPacket::new,
        map(0x32, MINECRAFT_1_7_2, true),
        map(0x11, MINECRAFT_1_9, true),
@@ -261,7 +271,8 @@ public enum FallbackPacketRegistry {
        map(0x2E, MINECRAFT_1_19_3, true),
        map(0x32, MINECRAFT_1_19_4, true),
        map(0x33, MINECRAFT_1_20_2, true),
-        map(0x35, MINECRAFT_1_20_5, true));
+        map(0x35, MINECRAFT_1_20_5, true),
+        map(0x37, MINECRAFT_1_21_2, true));
      clientbound.register(SetDefaultSpawnPositionPacket.class, SetDefaultSpawnPositionPacket::new,
        map(0x05, MINECRAFT_1_7_2, true),
        map(0x43, MINECRAFT_1_9, true),
@@ -278,7 +289,8 @@ public enum FallbackPacketRegistry {
        map(0x50, MINECRAFT_1_19_4, true),
        map(0x52, MINECRAFT_1_20_2, true),
        map(0x54, MINECRAFT_1_20_3, true),
-        map(0x56, MINECRAFT_1_20_5, true));
+        map(0x56, MINECRAFT_1_20_5, true),
+        map(0x5B, MINECRAFT_1_21_2, true));
      clientbound.register(MapDataPacket.class, MapDataPacket::new,
        map(0x34, MINECRAFT_1_7_2, true),
        map(0x24, MINECRAFT_1_9, true),
@@ -292,7 +304,8 @@ public enum FallbackPacketRegistry {
        map(0x25, MINECRAFT_1_19_3, true),
        map(0x29, MINECRAFT_1_19_4, true),
        map(0x2A, MINECRAFT_1_20_2, true),
-        map(0x2C, MINECRAFT_1_20_5, true));
+        map(0x2C, MINECRAFT_1_20_5, true),
+        map(0x2D, MINECRAFT_1_21_2, true));
      clientbound.register(SetContainerSlotPacket.class, SetContainerSlotPacket::new,
        map(0x2F, MINECRAFT_1_7_2, true),
        map(0x16, MINECRAFT_1_9, true),
@@ -320,26 +333,30 @@ public enum FallbackPacketRegistry {
        map(0x56, MINECRAFT_1_19_4, true),
        map(0x58, MINECRAFT_1_20_2, true),
        map(0x5A, MINECRAFT_1_20_3, true),
-        map(0x5C, MINECRAFT_1_20_5, true));
+        map(0x5C, MINECRAFT_1_20_5, true),
+        map(0x61, MINECRAFT_1_21_2, true));
      clientbound.register(SystemChatPacket.class, SystemChatPacket::new,
-        map(0x02, MINECRAFT_1_7_2, false),
-        map(0x0F, MINECRAFT_1_9, false),
-        map(0x0E, MINECRAFT_1_13, false),
-        map(0x0F, MINECRAFT_1_15, false),
-        map(0x0E, MINECRAFT_1_16, false),
-        map(0x0F, MINECRAFT_1_17, false),
-        map(0x5F, MINECRAFT_1_19, false),
-        map(0x62, MINECRAFT_1_19_1, false),
-        map(0x60, MINECRAFT_1_19_3, false),
-        map(0x64, MINECRAFT_1_19_4, false),
-        map(0x67, MINECRAFT_1_20_2, false),
-        map(0x69, MINECRAFT_1_20_3, false),
-        map(0x6C, MINECRAFT_1_20_5, false));
+        map(0x02, MINECRAFT_1_7_2, true),
+        map(0x0F, MINECRAFT_1_9, true),
+        map(0x0E, MINECRAFT_1_13, true),
+        map(0x0F, MINECRAFT_1_15, true),
+        map(0x0E, MINECRAFT_1_16, true),
+        map(0x0F, MINECRAFT_1_17, true),
+        map(0x5F, MINECRAFT_1_19, true),
+        map(0x62, MINECRAFT_1_19_1, true),
+        map(0x60, MINECRAFT_1_19_3, true),
+        map(0x64, MINECRAFT_1_19_4, true),
+        map(0x67, MINECRAFT_1_20_2, true),
+        map(0x69, MINECRAFT_1_20_3, true),
+        map(0x6C, MINECRAFT_1_20_5, true),
+        map(0x73, MINECRAFT_1_21_2, true));
      clientbound.register(GameEventPacket.class, GameEventPacket::new,
        map(0x20, MINECRAFT_1_20_3, true),
-        map(0x22, MINECRAFT_1_20_5, true));
+        map(0x22, MINECRAFT_1_20_5, true),
+        map(0x23, MINECRAFT_1_21_2, true));
      clientbound.register(TransferPacket.class, TransferPacket::new,
-        map(0x73, MINECRAFT_1_20_5, true));
+        map(0x73, MINECRAFT_1_20_5, true),
+        map(0x7A, MINECRAFT_1_21_2, true));
      clientbound.register(SetHeldItemPacket.class, SetHeldItemPacket::new,
        map(0x09, MINECRAFT_1_7_2, true),
        map(0x37, MINECRAFT_1_9, true),
@@ -356,7 +373,54 @@ public enum FallbackPacketRegistry {
        map(0x4D, MINECRAFT_1_19_4, true),
        map(0x4F, MINECRAFT_1_20_2, true),
        map(0x51, MINECRAFT_1_20_3, true),
-        map(0x53, MINECRAFT_1_20_5, true));
+        map(0x53, MINECRAFT_1_20_5, true),
+        map(0x63, MINECRAFT_1_21_2, true));
+      clientbound.register(EntityAnimationPacket.class, EntityAnimationPacket::new,
+        map(0x0B, MINECRAFT_1_7_2, true),
+        map(0x06, MINECRAFT_1_9, true),
+        map(0x05, MINECRAFT_1_16, true),
+        map(0x06, MINECRAFT_1_17, true),
+        map(0x03, MINECRAFT_1_19, true),
+        map(0x04, MINECRAFT_1_19_4, true),
+        map(0x03, MINECRAFT_1_20_2, true));
+      clientbound.register(TeleportEntityPacket.class, TeleportEntityPacket::new,
+        map(0x18, MINECRAFT_1_7_2, true),
+        map(0x4A, MINECRAFT_1_9, true),
+        map(0x49, MINECRAFT_1_9_4, true),
+        map(0x4B, MINECRAFT_1_12, true),
+        map(0x4C, MINECRAFT_1_12_1, true),
+        map(0x50, MINECRAFT_1_13, true),
+        map(0x56, MINECRAFT_1_14, true),
+        map(0x57, MINECRAFT_1_15, true),
+        map(0x56, MINECRAFT_1_16, true),
+        map(0x61, MINECRAFT_1_17, true),
+        map(0x62, MINECRAFT_1_18, true),
+        map(0x63, MINECRAFT_1_19, true),
+        map(0x66, MINECRAFT_1_19_1, true),
+        map(0x64, MINECRAFT_1_19_3, true),
+        map(0x68, MINECRAFT_1_19_4, true),
+        map(0x6B, MINECRAFT_1_20_2, true),
+        map(0x6D, MINECRAFT_1_20_3, true),
+        map(0x70, MINECRAFT_1_20_5, true),
+        map(0x77, MINECRAFT_1_21_2, true));
+      clientbound.register(UpdateTimePacket.class, UpdateTimePacket::new,
+        map(0x03, MINECRAFT_1_7_2, true),
+        map(0x44, MINECRAFT_1_9, true),
+        map(0x46, MINECRAFT_1_12, true),
+        map(0x47, MINECRAFT_1_12_1, true),
+        map(0x4A, MINECRAFT_1_13, true),
+        map(0x4E, MINECRAFT_1_14, true),
+        map(0x4F, MINECRAFT_1_15, true),
+        map(0x4E, MINECRAFT_1_16, true),
+        map(0x58, MINECRAFT_1_17, true),
+        map(0x59, MINECRAFT_1_18, true),
+        map(0x5C, MINECRAFT_1_19_1, true),
+        map(0x5A, MINECRAFT_1_19_3, true),
+        map(0x5E, MINECRAFT_1_19_4, true),
+        map(0x60, MINECRAFT_1_20_2, true),
+        map(0x62, MINECRAFT_1_20_3, true),
+        map(0x64, MINECRAFT_1_20_5, true),
+        map(0x6B, MINECRAFT_1_21_2, true));

      serverbound.register(SetHeldItemPacket.class, SetHeldItemPacket::new,
        map(0x09, MINECRAFT_1_7_2, false),
@@ -370,7 +434,8 @@ public enum FallbackPacketRegistry {
        map(0x28, MINECRAFT_1_19_1, false),
        map(0x2B, MINECRAFT_1_20_2, false),
        map(0x2C, MINECRAFT_1_20_3, false),
-        map(0x2F, MINECRAFT_1_20_5, false));
+        map(0x2F, MINECRAFT_1_20_5, false),
+        map(0x31, MINECRAFT_1_21_2, false));
      serverbound.register(PaddleBoatPacket.class, PaddleBoatPacket::new,
        map(0x11, MINECRAFT_1_9, false),
        map(0x12, MINECRAFT_1_12, false),
@@ -385,7 +450,8 @@ public enum FallbackPacketRegistry {
        map(0x19, MINECRAFT_1_19_4, false),
        map(0x1B, MINECRAFT_1_20_2, false),
        map(0x1C, MINECRAFT_1_20_3, false),
-        map(0x1F, MINECRAFT_1_20_5, false));
+        map(0x1F, MINECRAFT_1_20_5, false),
+        map(0x21, MINECRAFT_1_21_2, false));
      serverbound.register(PlayerInputPacket.class, PlayerInputPacket::new,
        map(0x0C, MINECRAFT_1_7_2, false),
        map(0x15, MINECRAFT_1_9, false),
@@ -400,7 +466,24 @@ public enum FallbackPacketRegistry {
        map(0x1F, MINECRAFT_1_19_4, false),
        map(0x22, MINECRAFT_1_20_2, false),
        map(0x23, MINECRAFT_1_20_3, false),
-        map(0x26, MINECRAFT_1_20_5, false));
+        map(0x26, MINECRAFT_1_20_5, false),
+        map(0x28, MINECRAFT_1_21_2, false));
+      serverbound.register(VehicleMovePacket.class, VehicleMovePacket::new,
+        map(0x10, MINECRAFT_1_9, false),
+        map(0x11, MINECRAFT_1_12, false),
+        map(0x10, MINECRAFT_1_12_1, false),
+        map(0x13, MINECRAFT_1_13, false),
+        map(0x15, MINECRAFT_1_14, false),
+        map(0x16, MINECRAFT_1_16, false),
+        map(0x15, MINECRAFT_1_17, false),
+        map(0x17, MINECRAFT_1_19, false),
+        map(0x18, MINECRAFT_1_19_1, false),
+        map(0x17, MINECRAFT_1_19_3, false),
+        map(0x18, MINECRAFT_1_19_4, false),
+        map(0x1A, MINECRAFT_1_20_2, false),
+        map(0x1B, MINECRAFT_1_20_3, false),
+        map(0x1E, MINECRAFT_1_20_5, false),
+        map(0x20, MINECRAFT_1_21_2, false));
      serverbound.register(SystemChatPacket.class, SystemChatPacket::new,
        map(0x01, MINECRAFT_1_7_2, false),
        map(0x02, MINECRAFT_1_9, false),
@@ -410,7 +493,8 @@ public enum FallbackPacketRegistry {
        map(0x04, MINECRAFT_1_19, false),
        map(0x05, MINECRAFT_1_19_1, false),
        map(0x05, MINECRAFT_1_19_3, false),
-        map(0x06, MINECRAFT_1_20_5, false));
+        map(0x06, MINECRAFT_1_20_5, false),
+        map(0x07, MINECRAFT_1_21_2, false));
      serverbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
        map(0x00, MINECRAFT_1_7_2, false),
        map(0x0B, MINECRAFT_1_9, false),
@@ -426,7 +510,8 @@ public enum FallbackPacketRegistry {
        map(0x12, MINECRAFT_1_19_4, false),
        map(0x14, MINECRAFT_1_20_2, false),
        map(0x15, MINECRAFT_1_20_3, false),
-        map(0x18, MINECRAFT_1_20_5, false));
+        map(0x18, MINECRAFT_1_20_5, false),
+        map(0x1A, MINECRAFT_1_21_2, false));
      serverbound.register(ClientInformationPacket.class, ClientInformationPacket::new,
        map(0x15, MINECRAFT_1_7_2, false),
        map(0x04, MINECRAFT_1_9, false),
@@ -438,7 +523,8 @@ public enum FallbackPacketRegistry {
        map(0x07, MINECRAFT_1_19_3, false),
        map(0x08, MINECRAFT_1_19_4, false),
        map(0x09, MINECRAFT_1_20_2, false),
-        map(0x0A, MINECRAFT_1_20_5, false));
+        map(0x0A, MINECRAFT_1_20_5, false),
+        map(0xC, MINECRAFT_1_21_2, false));
      serverbound.register(PluginMessagePacket.class, PluginMessagePacket::new,
        map(0x17, MINECRAFT_1_7_2, false),
        map(0x09, MINECRAFT_1_9, false),
@@ -452,7 +538,8 @@ public enum FallbackPacketRegistry {
        map(0x0C, MINECRAFT_1_19_3, false),
        map(0x0D, MINECRAFT_1_19_4, false),
        map(0x0F, MINECRAFT_1_20_2, false),
-        map(0x12, MINECRAFT_1_21, false));
+        map(0x12, MINECRAFT_1_21, false),
+        map(0x14, MINECRAFT_1_21_2, false));
      serverbound.register(SetPlayerOnGround.class, SetPlayerOnGround::new,
        map(0x03, MINECRAFT_1_7_2, false),
        map(0x0F, MINECRAFT_1_9, false),
@@ -468,7 +555,8 @@ public enum FallbackPacketRegistry {
        map(0x17, MINECRAFT_1_19_4, false),
        map(0x19, MINECRAFT_1_20_2, false),
        map(0x1A, MINECRAFT_1_20_3, false),
-        map(0x1D, MINECRAFT_1_20_5, false));
+        map(0x1D, MINECRAFT_1_20_5, false),
+        map(0x1F, MINECRAFT_1_21_2, false));
      serverbound.register(SetPlayerPositionPacket.class, SetPlayerPositionPacket::new,
        map(0x04, MINECRAFT_1_7_2, false),
        map(0x0C, MINECRAFT_1_9, false),
@@ -484,7 +572,8 @@ public enum FallbackPacketRegistry {
        map(0x14, MINECRAFT_1_19_4, false),
        map(0x16, MINECRAFT_1_20_2, false),
        map(0x17, MINECRAFT_1_20_3, false),
-        map(0x1A, MINECRAFT_1_20_5, false));
+        map(0x1A, MINECRAFT_1_20_5, false),
+        map(0x1C, MINECRAFT_1_21_2, false));
      serverbound.register(SetPlayerRotationPacket.class, SetPlayerRotationPacket::new,
        map(0x05, MINECRAFT_1_7_2, false),
        map(0x0E, MINECRAFT_1_9, false),
@@ -500,7 +589,8 @@ public enum FallbackPacketRegistry {
        map(0x16, MINECRAFT_1_19_4, false),
        map(0x18, MINECRAFT_1_20_2, false),
        map(0x19, MINECRAFT_1_20_3, false),
-        map(0x1C, MINECRAFT_1_20_5, false));
+        map(0x1C, MINECRAFT_1_20_5, false),
+        map(0x1E, MINECRAFT_1_21_2, false));
      serverbound.register(SetPlayerPositionRotationPacket.class, SetPlayerPositionRotationPacket::new,
        map(0x06, MINECRAFT_1_7_2, false),
        map(0x0D, MINECRAFT_1_9, false),
@@ -516,7 +606,8 @@ public enum FallbackPacketRegistry {
        map(0x15, MINECRAFT_1_19_4, false),
        map(0x17, MINECRAFT_1_20_2, false),
        map(0x18, MINECRAFT_1_20_3, false),
-        map(0x1B, MINECRAFT_1_20_5, false));
+        map(0x1B, MINECRAFT_1_20_5, false),
+        map(0x1D, MINECRAFT_1_21_2, false));
      serverbound.register(ConfirmTeleportationPacket.class, ConfirmTeleportationPacket::new,
        map(0x00, MINECRAFT_1_9, false));
      serverbound.register(TransactionPacket.class, TransactionPacket::new,
@@ -533,7 +624,22 @@ public enum FallbackPacketRegistry {
        map(0x20, MINECRAFT_1_19_4, false),
        map(0x23, MINECRAFT_1_20_2, false),
        map(0x24, MINECRAFT_1_20_3, false),
-        map(0x27, MINECRAFT_1_20_5, false));
+        map(0x27, MINECRAFT_1_20_5, false),
+        map(0x29, MINECRAFT_1_21_2, false));
+      serverbound.register(AnimationPacket.class, AnimationPacket::new,
+        map(0x0A, MINECRAFT_1_7_2, false),
+        map(0x1A, MINECRAFT_1_9, false),
+        map(0x1D, MINECRAFT_1_12, false),
+        map(0x27, MINECRAFT_1_13, false),
+        map(0x2A, MINECRAFT_1_14, false),
+        map(0x2B, MINECRAFT_1_16, false),
+        map(0x2C, MINECRAFT_1_16_2, false),
+        map(0x2E, MINECRAFT_1_19, false),
+        map(0x2F, MINECRAFT_1_19_1, false),
+        map(0x32, MINECRAFT_1_20_2, false),
+        map(0x33, MINECRAFT_1_20_3, false),
+        map(0x36, MINECRAFT_1_20_5, false),
+        map(0x38, MINECRAFT_1_21_2, false));
    }
  };

@@ -550,30 +656,28 @@ public enum FallbackPacketRegistry {
    return (direction == Direction.SERVERBOUND ? serverbound : clientbound).getProtocolRegistry(version);
  }

-  public static class PacketRegistry {
-    private final Map<ProtocolVersion, ProtocolRegistry> versions;
+  public static final class PacketRegistry {
+    private final Map<ProtocolVersion, ProtocolRegistry> registries = new EnumMap<>(ProtocolVersion.class);

    PacketRegistry() {
-      final Map<ProtocolVersion, ProtocolRegistry> mutableVersions = new EnumMap<>(ProtocolVersion.class);
-      for (final ProtocolVersion version : ProtocolVersion.values()) {
-        if (!version.isUnknown()) {
-          mutableVersions.put(version, new ProtocolRegistry(version));
+      for (final ProtocolVersion protocolVersion : ProtocolVersion.values()) {
+        if (!protocolVersion.isUnknown()) {
+          registries.put(protocolVersion, new ProtocolRegistry(protocolVersion));
        }
      }
-      this.versions = Collections.unmodifiableMap(mutableVersions);
    }

-    ProtocolRegistry getProtocolRegistry(final ProtocolVersion version) {
-      final ProtocolRegistry registry = versions.get(version);
+    private @NotNull ProtocolRegistry getProtocolRegistry(final @NotNull ProtocolVersion protocolVersion) {
+      final ProtocolRegistry registry = registries.get(protocolVersion);
      if (registry == null) {
-        throw new IllegalArgumentException("Could not find data for protocol version " + version);
+        throw new IllegalArgumentException("Could not find data for protocol version " + protocolVersion);
      }
      return registry;
    }

-    <P extends FallbackPacket> void register(final Class<P> clazz,
-                                             final Supplier<P> packetSupplier,
-                                             final PacketMapping @NotNull ... mappings) {
+    private <T extends FallbackPacket> void register(final @NotNull Class<T> clazz,
+                                                     final @NotNull Supplier<T> supplier,
+                                                     final PacketMapping @NotNull ... mappings) {
      if (mappings.length == 0) {
        throw new IllegalArgumentException("At least one mapping must be provided.");
      }
@@ -583,21 +687,21 @@ public enum FallbackPacketRegistry {
        final PacketMapping next = (i + 1 < mappings.length) ? mappings[i + 1] : current;

        final ProtocolVersion from = current.protocolVersion;
-        final ProtocolVersion to = getProtocolVersion(current, next);
+        final ProtocolVersion to = current == next ? LATEST_VERSION : next.protocolVersion;

-        for (final ProtocolVersion protocol : EnumSet.range(from, to)) {
-          if (protocol == to && next != current) {
+        for (final ProtocolVersion protocolVersion : EnumSet.range(from, to)) {
+          if (protocolVersion == to && next != current) {
            break;
          }

-          final ProtocolRegistry registry = versions.get(protocol);
+          final ProtocolRegistry registry = registries.get(protocolVersion);
          if (registry == null) {
-            throw new IllegalArgumentException("Unknown protocol version " + from);
+            throw new IllegalArgumentException("Unknown protocol version " + protocolVersion);
          }

-          if (registry.packetIdToSupplier.containsKey(current.id)) {
+          if (registry.packetIdToSupplier.containsKey(current.packetId)) {
            throw new IllegalArgumentException("Can not register class " + clazz.getSimpleName()
-              + " with id " + current.id + " for " + registry.protocolVersion
+              + " with id " + current.packetId + " for " + registry.protocolVersion
              + " because another packet is already registered");
          }

@@ -607,18 +711,12 @@ public enum FallbackPacketRegistry {
          }

          if (!current.encodeOnly) {
-            registry.packetIdToSupplier.put(current.id, packetSupplier);
+            registry.packetIdToSupplier.put(current.packetId, supplier);
          }
-          registry.packetClassToId.put(clazz, current.id);
+          registry.packetClassToId.put(clazz, current.packetId);
        }
      }
    }
-
-    @NotNull
-    private static ProtocolVersion getProtocolVersion(final @NotNull PacketMapping current,
-                                                      final @NotNull PacketMapping next) {
-      return current == next ? LATEST_VERSION : next.protocolVersion;
-    }
  }

  @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
@@ -629,43 +727,38 @@ public enum FallbackPacketRegistry {
    private final Map<Class<? extends FallbackPacket>, Integer> packetClassToId =
      new HashMap<>(16, 0.5f);

-    public FallbackPacket createPacket(final int id) {
-      final Supplier<? extends FallbackPacket> supplier = packetIdToSupplier.get(id);
-
-      if (supplier == null) {
-        return null;
-      }
-      return supplier.get();
+    public FallbackPacket createPacket(final int packetId) {
+      final var supplier = packetIdToSupplier.get(packetId);
+      return supplier == null ? null : supplier.get();
    }

-    public int getPacketId(final @NotNull FallbackPacket packet) {
-      final int id = packetClassToId.getOrDefault(packet.getClass(), Integer.MIN_VALUE);
-
-      if (id == Integer.MIN_VALUE) {
-        throw new IllegalArgumentException("Could not find packet");
+    public int getPacketId(final @NotNull Class<? extends FallbackPacket> clazz) {
+      final int packetId = packetClassToId.getOrDefault(clazz, -1);
+      if (packetId == -1) {
+        throw new IllegalArgumentException("Could not find packet ID for " + clazz.getSimpleName());
      }
-      return id;
+      return packetId;
    }
  }

-  @Data
+  @ToString
  public static final class PacketMapping {
-    private final int id;
+    private final int packetId;
    private final ProtocolVersion protocolVersion;
    private final boolean encodeOnly;

-    PacketMapping(final int id,
+    PacketMapping(final int packetId,
                  final ProtocolVersion protocolVersion,
                  final boolean encodeOnly) {
-      this.id = id;
+      this.packetId = packetId;
      this.protocolVersion = protocolVersion;
      this.encodeOnly = encodeOnly;
    }
  }

-  private static @NotNull PacketMapping map(final int id,
+  private static @NotNull PacketMapping map(final int packetId,
                                            final ProtocolVersion protocolVersion,
                                            final boolean encodeOnly) {
-    return new PacketMapping(id, protocolVersion, encodeOnly);
+    return new PacketMapping(packetId, protocolVersion, encodeOnly);
  }
 }
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.EncoderException;
+import io.netty.util.collection.IntObjectHashMap;
+import io.netty.util.collection.IntObjectMap;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.util.ProtocolUtil;
+import xyz.jonesdev.sonar.common.util.exception.QuietDecoderException;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.ID_TO_PROTOCOL_CONSTANT;
+
+// https://github.com/Nan1t/NanoLimbo/blob/main/src/main/java/ua/nanit/limbo/protocol/PacketSnapshot.java
+public final class FallbackPacketSnapshot implements FallbackPacket {
+  private final IntObjectMap<Integer> mappings = new IntObjectHashMap<>(ID_TO_PROTOCOL_CONSTANT.size());
+  private final IntObjectMap<byte[]> cachedBytes = new IntObjectHashMap<>(ID_TO_PROTOCOL_CONSTANT.size());
+  @Getter
+  private final Class<? extends FallbackPacket> originalPacketClass;
+
+  public FallbackPacketSnapshot(final @NotNull FallbackPacket originalPacket) {
+    this.originalPacketClass = originalPacket.getClass();
+
+    final IntObjectMap<Integer> hashedData = new IntObjectHashMap<>(ID_TO_PROTOCOL_CONSTANT.size());
+
+    for (final ProtocolVersion protocolVersion : ID_TO_PROTOCOL_CONSTANT.values()) {
+      // Allocate a buffer for each protocol version
+      final ByteBuf byteBuf = Unpooled.buffer();
+      try {
+        try {
+          originalPacket.encode(byteBuf, protocolVersion);
+        } catch (Throwable throwable) {
+          Sonar.get().getLogger().error("Could not encode packet {} for version {}: {}",
+            originalPacket, protocolVersion, throwable);
+          break;
+        }
+
+        final Integer protocol = protocolVersion.getProtocol();
+        final Integer hash = byteBuf.hashCode();
+        final Integer hashed = hashedData.getOrDefault(hash, -1);
+
+        if (hashed != -1) {
+          mappings.put(protocol, hashed);
+        } else {
+          hashedData.put(hash, protocol);
+          mappings.put(protocol, protocol);
+          // Cache the raw bytes of the encoded packet
+          final byte[] bytes = new byte[byteBuf.readableBytes()];
+          byteBuf.readBytes(bytes);
+          cachedBytes.put(protocol, bytes);
+        }
+      } finally {
+        // Make sure to release the buffer to avoid memory leaks
+        byteBuf.release();
+      }
+    }
+  }
+
+  @Override
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    final Integer hash = mappings.get(protocolVersion.getProtocol());
+    if (hash == null) {
+      throw ProtocolUtil.DEBUG ? new EncoderException("Unable to find hash") : QuietDecoderException.INSTANCE;
+    }
+    final byte[] bytes = cachedBytes.get(hash);
+    if (bytes == null) {
+      throw ProtocolUtil.DEBUG ? new EncoderException("Unable to find cached packet") : QuietDecoderException.INSTANCE;
+    }
+    byteBuf.writeBytes(bytes);
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.protocol;
+
+import lombok.experimental.UtilityClass;
+import net.kyori.adventure.nbt.CompoundBinaryTag;
+import net.kyori.adventure.nbt.IntBinaryTag;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.config.SonarConfiguration;
+import xyz.jonesdev.sonar.api.event.impl.CaptchaGenerationStartEvent;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.captcha.StandardCaptchaGenerator;
+import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockType;
+import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockUpdate;
+import xyz.jonesdev.sonar.common.fallback.protocol.dimension.DimensionRegistry;
+import xyz.jonesdev.sonar.common.fallback.protocol.dimension.DimensionType;
+import xyz.jonesdev.sonar.common.fallback.protocol.entity.EntityType;
+import xyz.jonesdev.sonar.common.fallback.protocol.item.ItemType;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.configuration.FinishConfigurationPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.configuration.RegistryDataPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginSuccessPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;
+import xyz.jonesdev.sonar.common.util.ComponentHolder;
+
+import java.util.Random;
+import java.util.UUID;
+
+@UtilityClass
+public class FallbackPreparer {
+  private final Random RANDOM = new Random();
+
+  public static final int PLAYER_ENTITY_ID = RANDOM.nextInt();
+  public static final int VEHICLE_ENTITY_ID = RANDOM.nextInt();
+
+  public static final BlockType[] POSSIBLE_BLOCK_TYPES = BlockType.values();
+  public final FallbackPacket[] BLOCKS_PACKETS = new FallbackPacket[POSSIBLE_BLOCK_TYPES.length];
+
+  public final int BLOCKS_PER_ROW = 8; // 8 * 8 = 64 (vanilla protocol maximum)
+  public final int SPAWN_X_POSITION = 16 / 2; // middle of the chunk
+  public final int SPAWN_Z_POSITION = 16 / 2; // middle of the chunk
+  public final int PLATFORM_Y_POSITION = 1 + RANDOM.nextInt(255); // 255 is the maximum Y position
+  public final int IN_AIR_Y_POSITION = 3000 + RANDOM.nextInt(500); // Random high altitude
+
+  public final int FIRST_TELEPORT_ID = RANDOM.nextInt();
+  public final int SECOND_TELEPORT_ID = RANDOM.nextInt();
+  public final int PRE_JOIN_KEEP_ALIVE_ID = RANDOM.nextInt();
+
+  private final int MAP_SLOT = RANDOM.nextInt(9);
+
+  public static final FallbackPacket CAPTCHA_SET_CONTAINER_SLOT = new SetContainerSlotPacket(
+    0, 36 + MAP_SLOT, 1, ItemType.FILLED_MAP, CompoundBinaryTag.builder()
+    .put("map", IntBinaryTag.intBinaryTag(0)) // map id
+    .build());
+  public final static FallbackPacket CAPTCHA_HELD_ITEM_SLOT = new SetHeldItemPacket(MAP_SLOT);
+  public final FallbackPacket DEFAULT_ABILITIES = new PlayerAbilitiesPacket(0x00, 0, 0);
+  public final FallbackPacket NO_MOVE_ABILITIES = new PlayerAbilitiesPacket(0x02, 0, 0);
+  public final FallbackPacket NO_MOVE_ABILITIES_BEDROCK = new PlayerAbilitiesPacket(0x06, 0, 0);
+  public final FallbackPacket CAPTCHA_POSITION = new FallbackPacketSnapshot(new SetPlayerPositionRotationPacket(
+    SPAWN_X_POSITION, 10000, SPAWN_Z_POSITION, 0, 90, 0, 0, false, false, true));
+  public final FallbackPacket EMPTY_CHUNK_DATA = new FallbackPacketSnapshot(new ChunkDataPacket(0, 0));
+  public final FallbackPacket FINISH_CONFIGURATION = new FinishConfigurationPacket();
+  public final FallbackPacket PRE_JOIN_KEEP_ALIVE = new FallbackPacketSnapshot(new KeepAlivePacket(PRE_JOIN_KEEP_ALIVE_ID));
+  public final FallbackPacket[] REGISTRY_SYNC_1_20 = new FallbackPacket[] {
+    new FallbackPacketSnapshot(new RegistryDataPacket(DimensionRegistry.CODEC_1_20, null, null))};
+  public final FallbackPacket[] REGISTRY_SYNC_1_20_5 = RegistryDataPacket.of(DimensionRegistry.CODEC_1_20);
+  public final FallbackPacket[] REGISTRY_SYNC_1_21 = RegistryDataPacket.of(DimensionRegistry.CODEC_1_21);
+  public final FallbackPacket[] REGISTRY_SYNC_1_21_2 = RegistryDataPacket.of(DimensionRegistry.CODEC_1_21_2);
+  public final FallbackPacket START_WRITING_CHUNKS = new GameEventPacket(13, 0);
+  public final static FallbackPacket INVALID_HELD_ITEM_SLOT = new SetHeldItemPacket(-1);
+  public final FallbackPacket RANDOM_KEEP_ALIVE = new FallbackPacketSnapshot(new KeepAlivePacket(RANDOM.nextInt()));
+  public static final FallbackPacket SPAWN_BOAT_ENTITY = new FallbackPacketSnapshot(new SpawnEntityPacket(
+    VEHICLE_ENTITY_ID, EntityType.BOAT, SPAWN_X_POSITION, IN_AIR_Y_POSITION, SPAWN_Z_POSITION,
+    0, 0, 0, 0));
+  public static final FallbackPacket SPAWN_MINECART_ENTITY = new FallbackPacketSnapshot(new SpawnEntityPacket(
+    VEHICLE_ENTITY_ID, EntityType.MINECART, SPAWN_X_POSITION, IN_AIR_Y_POSITION - 16, SPAWN_Z_POSITION,
+    0, 0, 0, 0));
+  public static final FallbackPacket REMOVE_VEHICLE = new RemoveEntitiesPacket(VEHICLE_ENTITY_ID);
+  public static final FallbackPacket SET_VEHICLE_PASSENGERS = new FallbackPacketSnapshot(
+    new SetPassengersPacket(VEHICLE_ENTITY_ID, PLAYER_ENTITY_ID));
+
+  public static FallbackPacket loginSuccess;
+  public FallbackPacket welcomeMessage;
+  public FallbackPacket enterCodeMessage;
+  public FallbackPacket incorrectCaptcha;
+  public static FallbackPacket joinGame;
+  public FallbackPacket defaultSpawnPosition;
+  public FallbackPacket spawnPosition;
+  public FallbackPacket fallStartPosition;
+  public FallbackPacket fallStartPositionLegacy;
+  public static FallbackPacket transferToOrigin;
+  public FallbackPacket blacklisted;
+  public FallbackPacket alreadyQueued;
+  public FallbackPacket alreadyVerifying;
+  public FallbackPacket reconnectedTooFast;
+  public FallbackPacket protocolBlacklisted;
+  public FallbackPacket invalidUsername;
+  public FallbackPacket tooManyOnlinePerIP;
+  public FallbackPacket[] xpCountdown;
+  public FallbackPacket updateTime;
+
+  public static int maxMovementTick, dynamicSpawnYPosition, maxTotalPacketsSent;
+
+  @SuppressWarnings("ResultOfMethodCallIgnored")
+  public void prepare() {
+    // Preload the packet registry to avoid CPU/RAM issues on 1st connection
+    Sonar.get().getLogger().info("Preloading all registered packets...");
+    FallbackPacketRegistry.values();
+
+    // Prepare LoginSuccess packet with capped username to 16 characters
+    final UUID uuid = UUID.randomUUID();
+    String username = Sonar.get().getConfig().getGeneralConfig().getString("verification.cached-username");
+    if (username.length() > 16) {
+      username = username.substring(0, 16);
+    }
+    loginSuccess = new FallbackPacketSnapshot(new LoginSuccessPacket(uuid, username, true));
+
+    // Prepare JoinGame packet
+    joinGame = new FallbackPacketSnapshot(new JoinGamePacket(PLAYER_ENTITY_ID,
+      Sonar.get().getConfig().getVerification().getGamemode().getId(),
+      -1, 0, 0,
+      RANDOM.nextInt(3), 1, 0, 0,
+      new String[]{"lol"}, "lol", "flat",
+      DimensionType.OVERWORLD, RANDOM.nextLong() & 1337,
+      false, true, false,
+      false, false, false, true));
+
+    // Prepare the gravity check
+    maxMovementTick = Sonar.get().getConfig().getVerification().getGravity().getMaxMovementTicks();
+
+    double motionY = 0, fallDistance = 0;
+
+    for (int i = 0; i < maxMovementTick; i++) {
+      motionY = (motionY - 0.1) * 0.98f;
+      fallDistance += Math.abs(motionY);
+    }
+
+    // Set the dynamic block and collide Y position based on the maximum fall distance
+    dynamicSpawnYPosition = PLATFORM_Y_POSITION + (int) Math.ceil(fallDistance);
+    defaultSpawnPosition = new FallbackPacketSnapshot(new SetDefaultSpawnPositionPacket(
+      SPAWN_X_POSITION, IN_AIR_Y_POSITION, SPAWN_Z_POSITION));
+    spawnPosition = new FallbackPacketSnapshot(new SetPlayerPositionRotationPacket(
+      SPAWN_X_POSITION, IN_AIR_Y_POSITION, SPAWN_Z_POSITION,
+      0, 0, FIRST_TELEPORT_ID, 0, false, false, true));
+    fallStartPosition = new FallbackPacketSnapshot(new SetPlayerPositionRotationPacket(
+      SPAWN_X_POSITION, dynamicSpawnYPosition - IN_AIR_Y_POSITION, SPAWN_Z_POSITION,
+      0, -90, SECOND_TELEPORT_ID, 1 << 1, false, false, true));
+    fallStartPositionLegacy = new FallbackPacketSnapshot(new SetPlayerPositionRotationPacket(
+      SPAWN_X_POSITION, dynamicSpawnYPosition, SPAWN_Z_POSITION,
+      0, -90, 0, 0, false, false, true));
+
+    // Prepare collision platform positions
+    final int length = BLOCKS_PER_ROW / 2;
+    for (int i = 0; i < BLOCKS_PACKETS.length; i++) {
+      final BlockUpdate[] blocks = new BlockUpdate[BLOCKS_PER_ROW * BLOCKS_PER_ROW];
+
+      int index = 0;
+      for (int x = 0; x < BLOCKS_PER_ROW; x++) {
+        for (int z = 0; z < BLOCKS_PER_ROW; z++) {
+          final BlockUpdate.BlockPosition position = new BlockUpdate.BlockPosition(
+            x + length, PLATFORM_Y_POSITION, z + length, 0, 0);
+          blocks[index++] = new BlockUpdate(position, POSSIBLE_BLOCK_TYPES[i]);
+        }
+      }
+      BLOCKS_PACKETS[i] = new FallbackPacketSnapshot(new UpdateSectionBlocksPacket(0, 0, blocks));
+    }
+
+    // Prepare disconnect packets during login
+    blacklisted = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getBlacklisted(), true));
+    alreadyVerifying = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getAlreadyVerifying(), true));
+    alreadyQueued = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getAlreadyQueued(), true));
+    protocolBlacklisted = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getProtocolBlacklisted(), true));
+    reconnectedTooFast = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getTooFastReconnect(), true));
+    invalidUsername = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getVerification().getInvalidUsername(), true));
+    tooManyOnlinePerIP = new FallbackPacketSnapshot(DisconnectPacket.create(Sonar.get().getConfig().getTooManyOnlinePerIp(), true));
+
+    // Prepare transfer packet
+    if (Sonar.get().getConfig().getGeneralConfig().getBoolean("verification.transfer.enabled")) {
+      transferToOrigin = new FallbackPacketSnapshot(new TransferPacket(
+        Sonar.get().getConfig().getGeneralConfig().getString("verification.transfer.destination-host"),
+        Sonar.get().getConfig().getGeneralConfig().getInt("verification.transfer.destination-port")));
+    } else {
+      transferToOrigin = null;
+    }
+
+    // Prepare update time packet
+    final int timeOfDay = Sonar.get().getConfig().getVerification().getTimeOfDay();
+    if (timeOfDay != 1000) {
+      updateTime = new UpdateTimePacket(0L, timeOfDay, false);
+    } else {
+      updateTime = null;
+    }
+
+    // If the welcome message is empty, we don't need to send a message to the player
+    final String welcome = Sonar.get().getConfig().getMessagesConfig().getString("verification.welcome");
+    if (welcome.isEmpty()) {
+      welcomeMessage = null;
+    } else {
+      welcomeMessage = new FallbackPacketSnapshot(new SystemChatPacket(new ComponentHolder(
+        MiniMessage.miniMessage().deserialize(welcome,
+          Placeholder.component("prefix", Sonar.get().getConfig().getPrefix())))));
+    }
+
+    if (Sonar.get().getConfig().getVerification().getMap().getTiming() != SonarConfiguration.Verification.Timing.NEVER
+      || Sonar.get().getConfig().getVerification().getGravity().isCaptchaOnFail()) {
+      // Prepare CAPTCHA messages
+      enterCodeMessage = new FallbackPacketSnapshot(new SystemChatPacket(new ComponentHolder(
+        MiniMessage.miniMessage().deserialize(
+          Sonar.get().getConfig().getMessagesConfig().getString("verification.captcha.enter"),
+          Placeholder.component("prefix", Sonar.get().getConfig().getPrefix())))));
+      incorrectCaptcha = new FallbackPacketSnapshot(new SystemChatPacket(new ComponentHolder(
+        MiniMessage.miniMessage().deserialize(
+          Sonar.get().getConfig().getMessagesConfig().getString("verification.captcha.incorrect"),
+          Placeholder.component("prefix", Sonar.get().getConfig().getPrefix())))));
+
+      // Prepare countdown
+      xpCountdown = new FallbackPacket[Sonar.get().getConfig().getVerification().getMap().getMaxDuration() / 1000];
+
+      for (int i = 0; i < xpCountdown.length; i++) {
+        final float bar = (float) i / xpCountdown.length;
+        xpCountdown[i] = new FallbackPacketSnapshot(new SetExperiencePacket(bar, i, 0));
+      }
+
+      // Update the CAPTCHA generator if necessary
+      final CaptchaGenerationStartEvent generationStartEvent = new CaptchaGenerationStartEvent(
+        Sonar.get().getFallback().getCaptchaGenerator());
+      Sonar.get().getEventManager().publish(generationStartEvent);
+
+      if (generationStartEvent.getCaptchaGenerator() == null
+        || generationStartEvent.getCaptchaGenerator() instanceof StandardCaptchaGenerator) {
+        Sonar.get().getFallback().setCaptchaGenerator(new StandardCaptchaGenerator(
+          Sonar.get().getConfig().getVerification().getMap().getBackgroundImage()));
+      } else {
+        Sonar.get().getLogger().info("Custom CAPTCHA generator detected, skipping reinitialization.");
+      }
+
+      // Prepare CAPTCHA answers
+      CaptchaPreparer.prepare();
+    } else {
+      // Throw away if not needed
+      enterCodeMessage = null;
+      incorrectCaptcha = null;
+      xpCountdown = null;
+      Sonar.get().getFallback().setCaptchaGenerator(null);
+    }
+
+    maxTotalPacketsSent = maxMovementTick + 2
+      + (xpCountdown == null ? 0 : xpCountdown.length) * 20 + 5
+      + Sonar.get().getConfig().getVerification().getVehicle().getMinimumPackets() * 4
+      + Sonar.get().getConfig().getVerification().getMap().getMaxTries()
+      + 150 /* some arbitrary leeway */;
+  }
+
+  public static FallbackPacket[] getRegistryPackets(final @NotNull ProtocolVersion protocolVersion) {
+    if (protocolVersion.greaterThanOrEquals(ProtocolVersion.MINECRAFT_1_21_2)) {
+      return REGISTRY_SYNC_1_21_2;
+    }
+    if (protocolVersion.greaterThanOrEquals(ProtocolVersion.MINECRAFT_1_21)) {
+      return REGISTRY_SYNC_1_21;
+    }
+    if (protocolVersion.greaterThanOrEquals(ProtocolVersion.MINECRAFT_1_20_5)) {
+      return REGISTRY_SYNC_1_20_5;
+    }
+    return REGISTRY_SYNC_1_20;
+  }
+}
@@ -0,0 +1,309 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.protocol.block;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+
+import java.util.function.Function;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+
+// TODO: load mappings from a separate file
+@Getter
+@SuppressWarnings("unused")
+@RequiredArgsConstructor
+public enum BlockType {
+  // Useful resources:
+  // - https://github.com/PrismarineJS/minecraft-data/blob/master/data/pc/
+  // - https://pokechu22.github.io/Burger/
+  // - https://github.com/ViaVersion/Mappings/tree/main/mappings
+  //STONE(protocolVersion -> 1, 1),
+  ENCHANTMENT_TABLE(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 116;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 4612;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 4613;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 5116;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 5132;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 5136;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 5333;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 5719;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 7159;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 7385;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 7389;
+    }
+    return 7619;
+  }, protocolVersion -> (double) 0.75f),
+  TRAPDOOR(protocolVersion -> {
+    // We have to use wooden trapdoors for 1.7 since 1.7 doesn't have iron trapdoors
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_7_6)) {
+      return 96;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 167;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 6509;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 6510;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 7016;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 7552;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 7556;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 7802;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 8293;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 9937;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 10269;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20)) {
+      return 10273;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 10414;
+    }
+    return 10749;
+  }, protocolVersion -> 0.1875),
+  END_PORTAL_FRAME(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 120;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 4633;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 4634;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 5137;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 5153;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 5157;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 5358;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 5744;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 7184;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 7410;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 7414;
+    }
+    return 7644;
+  }, protocolVersion -> 0.8125),
+  DAYLIGHT_SENSOR(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 151;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 5651;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 5652;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 6158;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 6694;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 6698;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 6916;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 7327;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 8811;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 9063;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20)) {
+      return 9067;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 9207;
+    }
+    return 9462;
+  }, protocolVersion -> 0.375),
+  COBBLESTONE_WALL(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 139;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 5196;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 5197;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 5700;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 5660;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 5664;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 5866;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 6252;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 7692;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 7918;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 7922;
+    }
+    return 8152;
+  }, protocolVersion -> 1.5),
+  STONE_SLABS(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 44;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 7296;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 7297;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 7809;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 8345;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 8349;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 8595;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 9092;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 10748;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 11086;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20)) {
+      return 11090;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 11231;
+    }
+    return 11566;
+  }, protocolVersion -> 0.5),
+  WHITE_CARPET(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 171;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 6823;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 6824;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 7330;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_1)) {
+      return 7866;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 7870;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 8116;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 8607;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 10251;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 10583;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20)) {
+      return 10587;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 10728;
+    }
+    return 11063;
+  }, protocolVersion -> protocolVersion.compareTo(MINECRAFT_1_8) < 0 ? 0 : 0.0625);
+
+  private final Function<ProtocolVersion, Integer> id;
+  private final Function<ProtocolVersion, Double> blockHeight;
+}
@@ -19,18 +19,17 @@ package xyz.jonesdev.sonar.common.fallback.protocol.block;

 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import lombok.ToString;
 import org.jetbrains.annotations.NotNull;

@Getter
 public final class BlockUpdate {
-  private final @NotNull BlockPosition position;
-  private final BlockType type;
+  private final BlockPosition position;
+  private final BlockType blockType;
  private final int legacyBlockState, blockState;

-  public BlockUpdate(final @NotNull BlockPosition position, final BlockType type) {
+  public BlockUpdate(final @NotNull BlockPosition position, final BlockType blockType) {
    this.position = position;
-    this.type = type;
+    this.blockType = blockType;
    final int x = position.getX() - (position.getChunkX() << 4);
    final int y = position.getY();
    final int z = position.getZ() - (position.getChunkZ() << 4);
@@ -39,7 +38,6 @@ public final class BlockUpdate {
  }

  @Getter
-  @ToString
  @RequiredArgsConstructor
  public static final class BlockPosition {
    private final int x, y, z;
@@ -18,10 +18,8 @@
 package xyz.jonesdev.sonar.common.fallback.protocol.dimension;

 import lombok.experimental.UtilityClass;
-import net.kyori.adventure.nbt.BinaryTag;
 import net.kyori.adventure.nbt.BinaryTagIO;
 import net.kyori.adventure.nbt.CompoundBinaryTag;
-import net.kyori.adventure.nbt.ListBinaryTag;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;

@@ -30,36 +28,26 @@ import java.util.Objects;

@UtilityClass
 public final class DimensionRegistry {
-  public final DimensionInfo DEFAULT_DIMENSION_1_16;
-  public final DimensionInfo DEFAULT_DIMENSION_1_18_2;
-
-  public final @NotNull CompoundBinaryTag CODEC_1_16;
-  public final @NotNull CompoundBinaryTag CODEC_1_18_2;
-  public final @NotNull CompoundBinaryTag CODEC_1_19;
-  public final @NotNull CompoundBinaryTag CODEC_1_19_1;
-  public final @NotNull CompoundBinaryTag CODEC_1_19_4;
-  public final @NotNull CompoundBinaryTag CODEC_1_20;
-  public final @NotNull CompoundBinaryTag CODEC_1_21;
-  public final @NotNull CompoundBinaryTag OLD_CODEC;
+  public final CompoundBinaryTag CODEC_1_16;
+  public final CompoundBinaryTag CODEC_1_16_2;
+  public final CompoundBinaryTag CODEC_1_18_2;
+  public final CompoundBinaryTag CODEC_1_19;
+  public final CompoundBinaryTag CODEC_1_19_1;
+  public final CompoundBinaryTag CODEC_1_19_4;
+  public final CompoundBinaryTag CODEC_1_20;
+  public final CompoundBinaryTag CODEC_1_21;
+  public final CompoundBinaryTag CODEC_1_21_2;

  static {
    CODEC_1_16 = getCodec("codec_1_16.nbt");
+    CODEC_1_16_2 = getCodec("codec_1_16_2.nbt");
    CODEC_1_18_2 = getCodec("codec_1_18_2.nbt");
    CODEC_1_19 = getCodec("codec_1_19.nbt");
    CODEC_1_19_1 = getCodec("codec_1_19_1.nbt");
    CODEC_1_19_4 = getCodec("codec_1_19_4.nbt");
    CODEC_1_20 = getCodec("codec_1_20.nbt");
    CODEC_1_21 = getCodec("codec_1_21.nbt");
-    OLD_CODEC = getCodec("codec_old.nbt");
-
-    DEFAULT_DIMENSION_1_16 = getDimension(CODEC_1_16);
-    DEFAULT_DIMENSION_1_18_2 = getDimension(CODEC_1_18_2);
-  }
-
-  private static @NotNull DimensionInfo getDimension(final @NotNull CompoundBinaryTag tag) {
-    final ListBinaryTag dimensions = tag.getCompound("minecraft:dimension_type").getList("value");
-    final BinaryTag elementTag = ((CompoundBinaryTag) dimensions.get(0)).get("element");
-    return new DimensionInfo("minecraft:overworld", 0, (CompoundBinaryTag) elementTag);
+    CODEC_1_21_2 = getCodec("codec_1_21_2.nbt");
  }

  private @NotNull CompoundBinaryTag getCodec(final @NotNull String fileName) {
@@ -19,14 +19,14 @@ package xyz.jonesdev.sonar.common.fallback.protocol.dimension;

 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
-import lombok.ToString;
-import net.kyori.adventure.nbt.CompoundBinaryTag;

@Getter
-@ToString
@RequiredArgsConstructor
-public final class DimensionInfo {
-  private final String identifier;
-  private final int id;
-  private final CompoundBinaryTag tag;
+public enum DimensionType {
+  OVERWORLD("minecraft:overworld", 0, 0),
+  THE_NETHER("minecraft:the_nether", -1, 1),
+  THE_END("minecraft:the_end", 1, 2);
+
+  private final String key;
+  private final int legacyId, id;
 }
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.protocol.entity;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+
+import java.util.function.Function;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+
+// TODO: load mappings from a separate file
+@Getter
+@RequiredArgsConstructor
+public enum EntityType {
+  // Useful resources:
+  // - https://github.com/PrismarineJS/minecraft-data/blob/master/data/pc/
+  // - https://pokechu22.github.io/Burger/1.20.4.html
+  BOAT(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 1;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_14_4)) {
+      return 5;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 6;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 7;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 8;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20_3)) {
+      return 9;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 10;
+    }
+    return 85; // 1.21.2 split the boat type in id registries.
+  }),
+  MINECART(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 10;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_14_4)) {
+      return 41;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 42;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 45;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 50;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 53;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 54;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20_2)) {
+      return 64;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20_3)) {
+      return 65;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 69;
+    }
+    return 82;
+  });
+
+  private final Function<ProtocolVersion, Integer> id;
+}
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2024 Sonar Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package xyz.jonesdev.sonar.common.fallback.protocol.item;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+
+import java.util.function.Function;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+
+// TODO: load mappings from a separate file
+@Getter
+@RequiredArgsConstructor
+public enum ItemType {
+  // Useful resources:
+  // - https://github.com/PrismarineJS/minecraft-data/blob/master/data/pc/
+  // - https://pokechu22.github.io/Burger/1.20.4.html
+  // - https://github.com/ViaVersion/Mappings/tree/main/mappings
+  FILLED_MAP(protocolVersion -> {
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_12_2)) {
+      return 358;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_1)) {
+      return 608;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_13_2)) {
+      return 613;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_15_2)) {
+      return 671;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_16_4)) {
+      return 733;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_18_2)) {
+      return 847;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_1)) {
+      return 886;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_3)) {
+      return 914;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_19_4)) {
+      return 937;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20_2)) {
+      return 941;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_20_3)) {
+      return 979;
+    }
+    if (protocolVersion.lessThanOrEquals(MINECRAFT_1_21)) {
+      return 982;
+    }
+    return 1022;
+  }, protocolVersion -> protocolVersion.greaterThanOrEquals(MINECRAFT_1_21_2) ? 36 : 26);
+
+  private final Function<ProtocolVersion, Integer> id;
+  private final Function<ProtocolVersion, Integer> components;
+}
Author	SHA1	Message	Date
Jones	9d2752dc32	Release 2.1.11 (#400 )	2024-10-23 15:27:19 +02:00
Jones	5fe9c18268	Move "FallbackTimeoutHandler" to "netty"	2024-10-23 02:33:06 +02:00
Jones	f93dae9532	Bump Gradle from 8.10.1 to 8.10.2	2024-10-22 21:08:45 +02:00
Jones	ab36823ca2	Microoptimize cached tab suggestions	2024-10-22 21:04:56 +02:00
Jones	5c94f06510	Remove useless variables from some events	2024-10-22 20:55:01 +02:00
Jones	d069b9aadb	Fixed CAPTCHA Y position breaking lighting	2024-10-22 20:44:37 +02:00
Jones	3337009fe4	Fix `filled_map` item type ID	2024-10-22 20:44:14 +02:00
Jones	b010e18552	Remove debug message from encoder	2024-10-22 20:37:47 +02:00
Jones	82b4b3bac7	Optimize EntityType and ItemType	2024-10-22 20:26:59 +02:00
Jones	b143ea548a	Refactor some protocol-related classes	2024-10-22 20:24:39 +02:00
Jones	689e3ea36b	Fix UpdateTime packet on 1.21.2	2024-10-22 20:16:25 +02:00
Jones	c9c1a2abb7	Microoptimize "/sonar statistics"	2024-10-22 19:46:44 +02:00
Jones	a8aa284a5e	Simplify CaffeineCacheRatelimiter initialization	2024-10-22 19:07:22 +02:00
Jones Jones Akkariin	448f8d9af3	1.21.2 Support (#370 ) * feat: register 1.21.2 protocol ID * Fix LoginSuccessPacket for 1.21.2 * Backport changes from https://github.com/jonesdevelopment/sonar/pull/370/files#diff-4e3d725f29d513f2f57f369660b93a7ee1d6414004158562736e2e2976fdf121 * Use Velocity's `writeBinaryTag` method * Rename some variables for clarity * Use Velocity's version comparison methods * Add missing signature checks for 1.19-1.19.2 * Simplify uuid reading in LoginStartPacket * Add missing chat timestamp checks * Recode JoinGame packet (and dimensions) * Add particleStatus to ClientInformationPacket * Fix teleport incompatibilities on 1.16-1.16.5 * Fix invalid Y position handling * Remove clientbound array length check * Improve readability of ChunkDataPacket * Set default write-timeout to 15000 * Set default rejoin-delay to 5000 * [wip] FallbackVehicleHandler 1.21.2 Support * Recode the entire vehicle handler * Fix lag compensation in the vehicle check * Fix previous merge conflicts (origin/main) * Inline static strings for better readability * Remove debugging in vehicle handler * Set default write-timeout to 10000 * Reduce the number of static imports * Strictly exempt Geyser from PM/CS checks * Micro-optimize Geyser check * Remove unnecessary variable assignment * Fix some false positives in the vehicle check * 1.21.2-pre4 Support (#397) * packet id mapping. tags. pre-3 protocol version. empty codec. * Fix build. Added `codec_1_21_2.nbt` generated by `NBTGenerator` * Fix `SetPlayerPositionRotationPacket` encode for 1.21.2-pre3 * Fix wrong `encodeOnly` in client bound KeepAlive registry * Small codestyle improvements * Fix `ChunkDataPacket` encode for 1.21.2-pre3 * Fix missing packet registry. * Fix entity type id for 1.21.2-pre3 * Fix wrong map component id for 1.21.2-pre3 * Add 1.21.2-pre3 block mapping. * Remove update tags packet. (Only affect crafting recipes) * Remove tag registry. * Fix and improve vehicle teleport logic for 1.21.2-pre3 * Set `exceptTeleport` to false after received `TeleportConfirm` * Fix typo for `expectTeleport` * Minor codestyle changes * Fix unexpected behavior in vehicle checks. * Remove debug log * Simply fix gravity checks for 1.21.2-pre3 * Change protocol version to pre4 * Fix wrong `encodeOnly` state in packet registry * Fix some previously introduced merging issues * Update to 1.21.2-pre5 * Fix possible bug in protocol handler * Fix wrong `encodeOnly` state --------- Co-authored-by: Jones <admin@jonesdev.xyz> * Fix KeepAlive check not working on 1.20.2+ * Don't cap KeepAlive ID in pre-join * Small codestyle improvements * Fix a false positive in the vehicle check * Remove tailing whitespace * Minecraft 1.21.2-rc1 support * Minecraft 1.21.2 support --------- Co-authored-by: Akkariin <fallencrystal@outlook.com>	2024-10-22 18:58:23 +02:00
dependabot[bot]	3d8f61fce3	Bump org.jetbrains:annotations from 26.0.0 to 26.0.1 (#399 ) Bumps [org.jetbrains:annotations](https://github.com/JetBrains/java-annotations) from 26.0.0 to 26.0.1. - [Release notes](https://github.com/JetBrains/java-annotations/releases) - [Changelog](https://github.com/JetBrains/java-annotations/blob/master/CHANGELOG.md) - [Commits](https://github.com/JetBrains/java-annotations/compare/26.0.0...26.0.1) --- updated-dependencies: - dependency-name: org.jetbrains:annotations dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-10-21 01:34:29 +00:00
Jones	cf27a9fe84	Exempt Bedrock players from the vehicle check	2024-10-15 20:10:13 +02:00
Jones	bec6251b2a	Exempt Bedrock players from the view distance check	2024-10-15 20:10:00 +02:00
Jones	6497b89f10	Use hashes for command tab completion	2024-10-15 19:29:20 +02:00
Jones	525d67808e	Don't print permission message if empty	2024-10-15 19:11:54 +02:00
Jones	8864c0749a	Optimize networking-related hot code	2024-10-15 12:35:23 +02:00
Jones	1ec4704f8e	Fix configuration state race condition	2024-10-14 20:42:39 +02:00
Jones	8a4937e3af	Fix error during configuration phase	2024-10-14 20:31:29 +02:00
dependabot[bot]	f90446d4e3	Bump org.jetbrains:annotations from 25.0.0 to 26.0.0 (#396 ) Bumps [org.jetbrains:annotations](https://github.com/JetBrains/java-annotations) from 25.0.0 to 26.0.0. - [Release notes](https://github.com/JetBrains/java-annotations/releases) - [Changelog](https://github.com/JetBrains/java-annotations/blob/master/CHANGELOG.md) - [Commits](https://github.com/JetBrains/java-annotations/compare/25.0.0...26.0.0) --- updated-dependencies: - dependency-name: org.jetbrains:annotations dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-10-14 01:14:01 +00:00
Jones	66141815cb	Make verification world time configurable	2024-10-11 16:34:29 +02:00
dependabot[bot]	3fe7ccd65c	Bump com.gradleup.shadow from 8.3.2 to 8.3.3 (#394 ) Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 8.3.2 to 8.3.3. - [Release notes](https://github.com/GradleUp/shadow/releases) - [Commits](https://github.com/GradleUp/shadow/compare/8.3.2...8.3.3) --- updated-dependencies: - dependency-name: com.gradleup.shadow dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-10-07 14:14:12 +02:00
dependabot[bot]	f6203416d1	Bump io.netty:netty-all from 4.1.113.Final to 4.1.114.Final (#393 ) Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.113.Final to 4.1.114.Final. - [Commits](https://github.com/netty/netty/compare/netty-4.1.113.Final...netty-4.1.114.Final) --- updated-dependencies: - dependency-name: io.netty:netty-all dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-10-07 14:14:01 +02:00
Jones	3c73ecf60f	Release 2.1.10 (#392 )	2024-10-06 14:15:51 +02:00
Jones	c116d7b556	Reduce the usage of static imports	2024-10-05 11:01:47 +02:00
Jones	057cda6c7a	Remove VerifiedPlayerController#estimatedSize	2024-10-05 10:51:26 +02:00
Jones	3a97a1f949	Add easier API method for verifying players	2024-10-05 10:50:30 +02:00
Jones	69b20769de	Add more stability checks to the database	2024-10-05 10:47:06 +02:00
Jones	9b87fde7c6	Implement missing view distance check	2024-10-05 09:38:13 +02:00
Jones	b939767ab9	Fix translation error in Spanish translations	2024-10-01 17:04:13 +02:00
Jones	d5a8cd5346	Tell user how to disable the welcome message	2024-10-01 17:03:58 +02:00
Jones	aa4e4662bb	Fix possible position issue with vehicles	2024-10-01 17:01:02 +02:00
dependabot[bot]	29187d4248	Bump org.jetbrains:annotations from 24.1.0 to 25.0.0 (#390 ) Bumps [org.jetbrains:annotations](https://github.com/JetBrains/java-annotations) from 24.1.0 to 25.0.0. - [Release notes](https://github.com/JetBrains/java-annotations/releases) - [Changelog](https://github.com/JetBrains/java-annotations/blob/master/CHANGELOG.md) - [Commits](https://github.com/JetBrains/java-annotations/compare/24.1.0...25.0.0) --- updated-dependencies: - dependency-name: org.jetbrains:annotations dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-09-30 14:37:16 +02:00
Jones	0c8106eaf6	Release 2.1.9 (#389 )	2024-09-29 13:32:05 +02:00
Jones	92ac5fbeb2	Fix block heights varying on different versions	2024-09-29 13:26:09 +02:00
Jones	b800a2d154	Use one entity ID for all vehicles	2024-09-28 12:21:44 +02:00
Jones	1957463b81	Fix the Discord link in Polish translations	2024-09-28 11:59:09 +02:00
Jones	25114eabe5	Add verification welcome message to config	2024-09-28 11:58:54 +02:00
Jones	a45b526ffb	Clean up and improve the API	2024-09-25 17:52:35 +02:00
Jones	7b70d32e84	Don't store the pipeline separately in user	2024-09-25 17:48:51 +02:00
Jones	e84c1a54db	Small micro-optimizations to networking	2024-09-25 17:42:51 +02:00
Jones	fd869ac199	Fix potential NullPointerException	2024-09-25 17:23:00 +02:00
dependabot[bot]	abf1479a84	Bump com.gradleup.shadow from 8.3.1 to 8.3.2 (#387 ) Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 8.3.1 to 8.3.2. - [Release notes](https://github.com/GradleUp/shadow/releases) - [Commits](https://github.com/GradleUp/shadow/compare/8.3.1...8.3.2) --- updated-dependencies: - dependency-name: com.gradleup.shadow dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-09-23 15:03:49 +02:00
dependabot[bot]	c00392e062	Bump bstats from 3.0.3 to 3.1.0 (#386 ) Bumps `bstats` from 3.0.3 to 3.1.0. Updates `org.bstats:bstats-bungeecord` from 3.0.3 to 3.1.0 - [Release notes](https://github.com/Bastian/bStats-Metrics/releases) - [Commits](https://github.com/Bastian/bStats-Metrics/compare/v3.0.3...v3.1.0) Updates `org.bstats:bstats-bukkit` from 3.0.3 to 3.1.0 - [Release notes](https://github.com/Bastian/bStats-Metrics/releases) - [Commits](https://github.com/Bastian/bStats-Metrics/compare/v3.0.3...v3.1.0) Updates `org.bstats:bstats-velocity` from 3.0.3 to 3.1.0 - [Release notes](https://github.com/Bastian/bStats-Metrics/releases) - [Commits](https://github.com/Bastian/bStats-Metrics/compare/v3.0.3...v3.1.0) --- updated-dependencies: - dependency-name: org.bstats:bstats-bungeecord dependency-type: direct:production update-type: version-update:semver-minor - dependency-name: org.bstats:bstats-bukkit dependency-type: direct:production update-type: version-update:semver-minor - dependency-name: org.bstats:bstats-velocity dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-09-23 15:03:32 +02:00
Jones	fc9c1026b1	Release 2.1.8 (#385 )	2024-09-22 13:21:19 +02:00
Jones	aae49aeb63	Remove initial "unofficial branch" warning	2024-09-22 13:00:11 +02:00
Jones	f7a6f04792	Make the update checker more accessible to users	2024-09-22 12:54:31 +02:00
Jones	e36ba9840c	Hide secure-chat toast from 1.20.5+ clients	2024-09-21 18:22:56 +02:00
Jones	40bceb71f1	Use the modern way of registering Velocity commands	2024-09-21 14:41:59 +02:00
Jones	2d3bf91444	Recode bandwidth statistic handling	2024-09-21 14:37:58 +02:00
Jones	45ab258a6f	Fix upload-artifacts unable to find artifacts	2024-09-21 14:07:54 +02:00
Jones	600277660c	General project base refactoring	2024-09-21 14:05:54 +02:00
MISHAandJones	6918afae52	JAR Downloads via GitHub Actions (#384 ) * Update gradle.yml * Update gradle.yml * fix: smaller improvements to CI * fix: wildcard pattern breaking CI * fix(ci): revert wildcard patterns --------- Co-authored-by: Jones <admin@jonesdev.xyz>	2024-09-21 13:45:15 +02:00
Jones	07cfc4ad1c	Randomize X and Z positions in vehicle check	2024-09-19 17:30:06 +02:00
Jones	65eb9a503f	Fix potential issue in the vehicle handler	2024-09-19 17:15:47 +02:00
Jones	f5d7cc1511	Small collision check improvements	2024-09-19 16:59:25 +02:00
Jones	2cb0a48657	Add some more smaller movement validations	2024-09-19 16:45:39 +02:00
Jones	646f296039	Don't notify the channel about unhandled packets	2024-09-19 16:29:16 +02:00
Jones	a698c26d39	Fix the 1.7.2-1.7.10 minimum Y coordinate issue	2024-09-19 16:21:19 +02:00
Jones	25136d6332	Small micro-optimizations in the packet registry	2024-09-19 13:11:20 +02:00
Jones	ee4b1ffef4	Optimize processing of queued logins	2024-09-18 13:11:59 +02:00
Jones	fe145836fe	Use a better-suited data type for connected players	2024-09-18 12:34:34 +02:00
Jones	47100f4071	Bump Gradle from 8.10 to 8.10.1	2024-09-18 10:52:03 +02:00
Jones	57311996c8	Set Gradle groupId to `xyz.jonesdev`	2024-09-18 10:49:01 +02:00
Jones	7ad8e48431	Bump bungeecord-proxy from master-SNAPSHOT to 1.21-SNAPSHOT	2024-09-18 10:39:55 +02:00
Jones	154d999b88	Bump velocity-proxy from 3.3.0-SNAPSHOT to 3.4.0-SNAPSHOT	2024-09-18 10:39:04 +02:00
Jones	bde637c9c5	Exempt Bedrock players from packet order checks	2024-09-18 10:07:56 +02:00
Jones	cb1c62f478	Fix max total packets false positive on 1.7-1.8	2024-09-17 15:20:17 +02:00
Jones	3727742419	Add CaptchaGenerationStartEvent, CaptchaGenerationEndEvent	2024-09-17 14:52:15 +02:00
Jones	f79bb38740	Remove a debug message	2024-09-17 14:48:47 +02:00
Jones	7d60ba85e7	Fix custom CAPTCHA background image not working	2024-09-17 14:44:31 +02:00
Jones	cec7fa07c2	Fix another potential false positive with Geyser	2024-09-17 13:12:57 +02:00
Jones	2be2380e3f	Fix invalid login mappings for 1.18-1.18.1	2024-09-16 14:18:08 +02:00
dependabot[bot]	ae99ade03a	Bump com.gradleup.shadow from 8.3.0 to 8.3.1 (#382 ) Bumps [com.gradleup.shadow](https://github.com/GradleUp/shadow) from 8.3.0 to 8.3.1. - [Release notes](https://github.com/GradleUp/shadow/releases) - [Commits](https://github.com/GradleUp/shadow/compare/8.3.0...8.3.1) --- updated-dependencies: - dependency-name: com.gradleup.shadow dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-09-16 13:53:09 +02:00
Jones	59731a93f1	Release 2.1.7 (#381 )	2024-09-15 14:09:43 +02:00
Jones	ace55fbe7b	Fix a small compilation error	2024-09-15 14:08:18 +02:00
Jones	696d3c5c81	Fix some Bedrock false positives	2024-09-15 14:03:00 +02:00
Jones	a1e4ea3f5b	Fix exception while serializing JsonArray (https://github.com/PaperMC/Velocity/pull/1426 )	2024-09-14 15:45:19 +02:00
Jones	6b054bd56c	Fix invalid block mappings for 1.14-1.14.3	2024-09-14 10:35:51 +02:00
Jones	c8e2142dd9	Cap username length in LoginSuccess (clientbound)	2024-09-12 18:20:11 +02:00
Jones	1cf7ef6994	Add invalid window ID check to transactions	2024-09-11 21:14:08 +02:00
Jones	af8aa103bf	Randomize some more position-related values	2024-09-11 19:31:31 +02:00
Jones	d1f2c15a8f	Fix a false positive with the moved too far check	2024-09-11 19:28:29 +02:00
Jones	5a68c4d557	Added another vehicle Y position check	2024-09-11 19:23:58 +02:00
Jones	1438856531	Release 2.1.6 (#379 )	2024-09-11 16:36:00 +02:00
AkkariinandJones	694725b798	Implement more interactionless checks (#378 ) * Add minecart entity * Add `VehicleMovePacket` * Add `Animation` packet * Add animation check. * Fix the wrong entity minecart id for 1.21 * Add minecart for vehicle check. * Exempt minecart check for 1.7-1.8 clients. * Fix minecart id for lower than minecraft version 1.14. * Fix wrong minecart entity id for 1.15 * Add missing license header * Exempt animation check for 1.7.2 client due unknown disconnect error. * style: small code style improvements * style: even more style improvements * refactor: inline some stuff * style: small code cleanup * fix: slot check not working in the first place * style: don't use return; use an if-else block * Fix animation check not working on 1.7.2+ * style: minor code style improvements * fix: lombok compile error * style: minor code style adjustments * fix: optimize AnimationPacket * fix: don't reassign unnecessary hand value * style: code style fixes in types style: add some comments to the types [ci skip] style: small code style improvements * Don't exempt 1.7-1.8 from the Minecart check --------- Co-authored-by: Jones <admin@jonesdev.xyz>	2024-09-11 16:29:30 +02:00
Jones	47cb4d0840	Release 2.1.5 (#377 )	2024-09-09 14:53:56 +02:00
dependabot[bot]	38ecb9ac06	Bump io.netty:netty-all from 4.1.112.Final to 4.1.113.Final (#376 ) Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.112.Final to 4.1.113.Final. - [Commits](https://github.com/netty/netty/compare/netty-4.1.112.Final...netty-4.1.113.Final) --- updated-dependencies: - dependency-name: io.netty:netty-all dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>	2024-09-09 14:31:43 +02:00
Jones	6657a3d674	Merge all custom logger wrappers into one	2024-09-08 18:32:35 +02:00
Jones	823ee21cea	Clear up a small misconception in the code	2024-09-08 18:16:51 +02:00
Jones	4d206af0ae	Don't allow players to send empty packets	2024-09-08 00:47:25 +02:00
Jones	2ff7b7efaa	Fix gravity check false positive on 1.7	2024-09-07 23:19:10 +02:00
Jones	a5efc1c796	Recode Y position and gravity calculation	2024-09-07 20:00:52 +02:00
Jones	85d5ce77b1	Implement SetPlayerRotationPacket packet order check	2024-09-07 19:34:46 +02:00
Jones	6c4d4b79d6	Implement PaddleBoatPacket packet order check	2024-09-07 19:34:19 +02:00
Jones	364b1c5b31	Optimize image RGB buffer writing	2024-09-07 14:48:55 +02:00
Jones	4edf04ede5	Randomize some placeholder variables during login	2024-09-07 12:53:24 +02:00
Jones	01da1a70ea	Remove useless PlayerInfoPacket	2024-09-07 12:00:53 +02:00
Jones	9bb7c7cd60	Only log expired database entries if there are any	2024-09-07 11:20:12 +02:00
Jones	aaa7588dcd	Don't load the database driver twice	2024-09-07 11:19:06 +02:00
Jones	8d378d56ef	Use regular JdbcConnectionSource, not pooled	2024-09-07 11:17:49 +02:00
Jones	476b1704b8	VarInt encoding optimizations (https://github.com/PaperMC/Velocity/commit/f034c0277d60e9f0a80e484832aec831cbc298f7 )	2024-09-06 23:16:41 +02:00
Jones	26c31ceeaf	VarInt reading optimizations (https://github.com/PaperMC/Velocity/pull/1418 )	2024-09-06 23:07:26 +02:00
Jones	40f65ef5eb	Rename 1.16(.2) codecs for more clarity	2024-09-06 22:54:50 +02:00
Jones	7736ccff86	Fix multiple block types being incorrect on 1.16	2024-09-06 22:53:24 +02:00
Jones	437a547ec3	[ci skip] Fix translation errors in copyright notice	2024-09-06 22:42:03 +02:00
Jones	4ec65218da	[ci skip] Remove unused configuration entries	2024-09-06 22:31:15 +02:00
Jones	de45e9f808	Mention TransferTool for Geyser in the config	2024-09-04 17:38:02 +02:00