Release 2.0.32 (#320 )

Recode verification system (#319 )
* feat: [wip] recode the entire verification * feat: [wip] add CAPTCHA session handler * feat: add CAPTCHA xp bar and KeepAlive * fix(fallback): migrate "connected" map to hashset * fix(fallback): 1.8 not being able to connect * fix(fallback): NullPointerException * fix(fallback): 1.7.2-1.7.10 not being able to verify * style: fix some doc comments * style: add doc comment to FallbackVehicleSessionHandler * style: add doc comment to FallbackCAPTCHASessionHandler * fix: prevent users from sending multiple login ack packets * style: rename variable for clarification * fix: [wip] gravity check not being executed properly * fix: use absolute value for motion prediction in gravity check * fix: check for duplicate PluginMessage packets * fix: oops, I broke the plugin message check * refactor: restructure verification failing logic * fix: mark LoginSuccess packet as encode-only * refactor: store channel pipeline in FallbackUser * feat: hook the traffic listener in channelActive to allow listening to handshakes * refactor(common): small maintainability changes * style(common): code clean up in packet registry * refactor(all): replace lombok's val with Java's var * fix: remove unnecessary packet filter in vehicle check * fix: don't send the disconnect message if the player is transferred * style: improve/simplify initialization of VerifiedPlayer * fix: wrong name resulting in compilation error * chore: fix a broken documentation link in the readme * fix: don't check Geyser players for plugin messages * fix: mark 1.7 players successful after 100ms, not 250ms * fix: skip movements if gravity and collision checks are disabled * style: don't store Sonar API instance in Fallback * fix: revert https://github.com/jonesdevelopment/sonar/pull/319/commits/f9c4f42503dfebb6fbba754ff26662e69f7eed00
2026-11-05 17:22:34 -05:00 · 2024-06-12 15:18:11 +02:00 · 2024-06-09 12:55:24 +02:00 · 2024-06-03 00:51:27 +02:00 · 2024-05-31 15:02:48 +02:00 · 2024-05-31 13:27:24 +02:00
141 changed files with 6019 additions and 3133 deletions
@@ -8,7 +8,6 @@ joining the [Discord](https://jonesdev.xyz/discord).
 2. Follow the coding guidelines for your code.
 3. Test your code before committing and pushing it.
 4. Use [semantic](https://gist.github.com/joshbuchea/6f47e86d2510bce28f8e7f42ae84c716) commit messages for your commits.
-5. Create a feature branch or push to the `dev` branch.

 ## Coding Guidelines:

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Documentation
+    url: https://docs.jonesdev.xyz/
+    about: Need help configuring Sonar or have questions regarding the installation and usage?
+  - name: Discord
+    url: https://jonesdev.xyz/discord/
+    about: If you have any further questions, please feel free to join the Discord server and open a ticket.
@@ -63,7 +63,7 @@ Fallback is unlikely to ever falsely prevent a player from joining the server si

 ## Building

-If you want to build your own version of Sonar, please take a look at the [Sonar building documentation](https://docs.jonesdev.xyz/sonar/building).
+If you want to build your own version of Sonar, please take a look at the [Sonar building documentation](https://docs.jonesdev.xyz/development/building).
 <br>
 You can also take a look at the [gradle documentation](https://docs.gradle.org/current/userguide/userguide.html) for a better understanding of Gradle.

@@ -1,17 +1,9 @@
-buildscript {
-  dependencies {
-    classpath("gradle.plugin.io.toolebox:gradle-git-versioner:1.6.7")
-  }
-}
-
 plugins {
-  id("java")
-  id("io.github.goooler.shadow") version "8.1.7"
-  id("io.toolebox.git-versioner") version "1.6.7"
+  java
+  alias(libs.plugins.shadow)
+  alias(libs.plugins.versioner) apply true
 }

-apply(plugin = "io.toolebox.git-versioner")
-
 versioner {
  pattern {
    pattern = "$version-%h-%c-%b"
@@ -20,7 +12,7 @@ versioner {

 allprojects {
  repositories {
-    mavenCentral() // Lombok
+    mavenCentral()
    maven(url = "https://repo.jonesdev.xyz/releases/") // Bungee & Velocity proxy module
    maven(url = "https://s01.oss.sonatype.org/content/repositories/snapshots/") // libby
  }
@@ -29,80 +21,68 @@ allprojects {
  apply(plugin = "io.github.goooler.shadow")

  dependencies {
-    compileOnly("org.projectlombok:lombok:1.18.30")
-    annotationProcessor("org.projectlombok:lombok:1.18.30")
+    compileOnly(rootProject.libs.lombok)
+    annotationProcessor(rootProject.libs.lombok)

-    testCompileOnly("org.projectlombok:lombok:1.18.30")
-    testAnnotationProcessor("org.projectlombok:lombok:1.18.30")
+    testCompileOnly(rootProject.libs.lombok)
+    testAnnotationProcessor(rootProject.libs.lombok)

-    // adventure
-    implementation("net.kyori:adventure-text-minimessage:4.16.0")
-    implementation("net.kyori:adventure-text-serializer-gson:4.16.0")
-    implementation("net.kyori:adventure-nbt:4.16.0")
-
-    compileOnly("com.j256.ormlite:ormlite-jdbc:6.1") // ORMLite
-    compileOnly("com.github.ben-manes.caffeine:caffeine:3.1.8") // caching
-    compileOnly("io.netty:netty-all:4.1.107.Final") // netty
-
-    // Library/dependency loading
-    compileOnly("com.alessiodp.libby:libby-core:2.0.0-SNAPSHOT")
+    compileOnly(rootProject.libs.adventure.minimessage)
+    compileOnly(rootProject.libs.adventure.serializer)
+    compileOnly(rootProject.libs.ormlite)
+    compileOnly(rootProject.libs.caffeine)
+    compileOnly(rootProject.libs.netty)
+    compileOnly(rootProject.libs.libby.core)
  }
-}

-dependencies {
-  sequenceOf("api", "bukkit", "bungee", "common", "velocity").forEach {
-    // We want the jar to actually contain our modules
-    implementation(project(":$it"))
+  tasks {
+    shadowJar {
+      // Set the file name of the shadowed jar
+      archiveFileName.set("${rootProject.name}-${project.name.replaceFirstChar { it.uppercase() }}.jar")
+
+      // Remove file timestamps
+      isPreserveFileTimestamps = false
+
+      // Relocate libraries
+      relocate("org.bstats", "xyz.jonesdev.sonar.libs.bstats")
+      relocate("com.alessiodp.libby", "xyz.jonesdev.sonar.libs.libby")
+      relocate("com.simpleyaml", "xyz.jonesdev.sonar.libs.yaml")
+      relocate("com.google.gson", "xyz.jonesdev.sonar.libs.gson")
+      relocate("com.j256.ormlite", "xyz.jonesdev.sonar.libs.ormlite")
+      relocate("com.github.benmanes.caffeine", "xyz.jonesdev.sonar.libs.caffeine")
+      relocate("com.mysql", "xyz.jonesdev.sonar.libs.mysql")
+      relocate("org.mariadb", "xyz.jonesdev.sonar.libs.mariadb")
+      relocate("xyz.jonesdev.capja", "xyz.jonesdev.sonar.libs.capja")
+
+      // Exclude unnecessary metadata information
+      exclude("META-INF/*/**")
+
+      // Minimize shadowed jar file
+      minimize {
+        exclude(project(":api"))
+      }
+    }
+
+    compileJava {
+      options.encoding = "UTF-8"
+    }
+
+    jar {
+      manifest {
+        // Set the implementation version, so we can create exact version
+        // information in-game and make it accessible to the user.
+        attributes["Implementation-Version"] = rootProject.version
+        attributes["Implementation-Vendor"] = "Jones Development, Sonar Contributors"
+      }
+    }
  }
 }

 tasks {
-  jar {
-    manifest {
-      // Set the implementation version, so we can create exact version
-      // information in-game and make it accessible to the user.
-      attributes["Implementation-Version"] = version
-      attributes["Implementation-Vendor"] = "Jones Development, Sonar Contributors"
-    }
-  }
-
-  shadowJar {
-    // Set the file name of the shadowed jar
-    archiveFileName.set("${rootProject.name}.jar")
-
-    // Remove file timestamps
-    isPreserveFileTimestamps = false
-
-    // Relocate libraries
-    relocate("org.bstats", "xyz.jonesdev.sonar.libs.bstats")
-    relocate("com.alessiodp.libby", "xyz.jonesdev.sonar.libs.libby")
-    relocate("com.simpleyaml", "xyz.jonesdev.sonar.libs.yaml")
-    relocate("com.google.gson", "xyz.jonesdev.sonar.libs.gson")
-    relocate("com.j256.ormlite", "xyz.jonesdev.sonar.libs.ormlite")
-    relocate("com.github.benmanes.caffeine", "xyz.jonesdev.sonar.libs.caffeine")
-    relocate("com.mysql", "xyz.jonesdev.sonar.libs.mysql")
-    relocate("org.mariadb", "xyz.jonesdev.sonar.libs.mariadb")
-
-    // TODO: actually fix this :/
-    // We have to be careful here, so we don't accidentally break adventure
-    relocate("net.kyori", "xyz.jonesdev.sonar.libs.kyori") {
-      exclude("net.kyori.adventure.text.**")
-      exclude("net.kyori.adventure.audience.Audience")
-      exclude("net.kyori.adventure.title.*")
-    }
-
-    // Exclude unnecessary metadata information
-    exclude("META-INF/*/**")
-    // We want to load our own Gson dynamically
-    exclude("com/google/gson/**")
-  }
-
-  compileJava {
-    options.encoding = "UTF-8"
-  }
-
  // This is a small wrapper tasks to simplify the building process
  register("build-sonar") {
-    dependsOn(clean, shadowJar)
+    val subprojects = listOf("api", "common", "bukkit", "bungee", "velocity")
+    val buildTasks = subprojects.flatMap { listOf("$it:clean", "$it:shadowJar") }
+    dependsOn(buildTasks)
  }
 }
@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-# Fix permissions so we are actually able to run our gradle script
-chmod +x gradle*
-# You can also use clean shadowJar if something goes wrong here
-# e.g. "./gradlew clean shadowJar --stacktrace"
-./gradlew build-sonar --stacktrace
@@ -1,3 +1,3 @@
 group=xyz.jonesdev.sonar
-version=2.0.23
+version=2.0.32
 description=Effective Anti-bot plugin for Velocity, BungeeCord, and Bukkit (1.7-latest)
@@ -0,0 +1,35 @@
+[versions]
+netty = "4.1.110.Final"
+adventure = "4.17.0"
+adventure-platform = "4.3.3"
+bstats = "3.0.2"
+libby = "2.0.0-SNAPSHOT"
+
+[plugins]
+versioner = "io.toolebox.git-versioner:1.6.7"
+shadow = "io.github.goooler.shadow:8.1.7"
+
+[libraries]
+netty = { module = "io.netty:netty-all", version.ref = "netty" }
+adventure-minimessage = { module = "net.kyori:adventure-text-minimessage", version.ref = "adventure" }
+adventure-serializer = { module = "net.kyori:adventure-text-serializer-gson", version.ref = "adventure" }
+adventure-nbt = { module = "net.kyori:adventure-nbt", version.ref = "adventure" }
+adventure-platform-bukkit = { module = "net.kyori:adventure-platform-bukkit", version.ref = "adventure-platform" }
+adventure-platform-bungee = { module = "net.kyori:adventure-platform-bungeecord", version.ref = "adventure-platform" }
+adventure-platform-facet = { module = "net.kyori:adventure-platform-facet", version.ref = "adventure-platform" }
+adventure-platform-api = { module = "net.kyori:adventure-platform-api", version.ref = "adventure-platform" }
+libby-core = { module = "com.alessiodp.libby:libby-core", version.ref = "libby" }
+libby-bungee = { module = "com.alessiodp.libby:libby-bungee", version.ref = "libby" }
+libby-bukkit = { module = "com.alessiodp.libby:libby-bukkit", version.ref = "libby" }
+libby-velocity = { module = "com.alessiodp.libby:libby-velocity", version.ref = "libby" }
+bstats-bungee = { module = "org.bstats:bstats-bungeecord", version.ref = "bstats" }
+bstats-bukkit = { module = "org.bstats:bstats-bukkit", version.ref = "bstats" }
+bstats-velocity = { module = "org.bstats:bstats-velocity", version.ref = "bstats" }
+caffeine = "com.github.ben-manes.caffeine:caffeine:3.1.8"
+ormlite = "com.j256.ormlite:ormlite-jdbc:6.1"
+lombok = "org.projectlombok:lombok:1.18.32"
+capja = "xyz.jonesdev:capja:1.0.3"
+bungeecord = "net.md_5:bungeecord-proxy:master-SNAPSHOT"
+velocity = "com.velocitypowered:velocity-proxy:3.3.0-SNAPSHOT"
+# We have to use 1.8 for backwards compatibility
+spigot = "org.spigotmc:spigot-api:1.8.8-R0.1-SNAPSHOT"
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
@@ -83,7 +83,8 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit

 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -144,7 +145,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
    case $MAX_FD in #(
      max*)
        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
        MAX_FD=$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
@@ -152,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
      '' | soft) :;; #(
      *)
        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
        ulimit -n "$MAX_FD" ||
            warn "Could not set maximum file descriptor limit to $MAX_FD"
    esac
@@ -201,11 +202,11 @@ fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'

-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.

 set -- \
        "-Dorg.gradle.appname=$APP_BASE_NAME" \
@@ -43,11 +43,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute

-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2

 goto fail

@@ -57,11 +57,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe

 if exist "%JAVA_EXE%" goto execute

-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2

 goto fail

@@ -18,6 +18,7 @@
 package xyz.jonesdev.sonar.api;

 import net.kyori.adventure.audience.Audience;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.attack.AttackTracker;
@@ -32,7 +33,6 @@ import xyz.jonesdev.sonar.api.timer.SystemTimer;
 import xyz.jonesdev.sonar.api.verbose.Notification;
 import xyz.jonesdev.sonar.api.verbose.Verbose;

-import java.io.File;
 import java.text.DecimalFormat;
 import java.util.UUID;

@@ -43,6 +43,7 @@ public interface Sonar {
   * Since we want to use Adventure on every server platform,
   * we have to use their platform module to support BungeeCord and Bukkit
   */
+  @ApiStatus.Internal
  @Nullable Audience audience(final @Nullable UUID uniqueId);

  /**
@@ -55,8 +56,6 @@ public interface Sonar {
   */
  @NotNull LoggerWrapper getLogger();

-  @NotNull File getDataDirectory();
-
  @NotNull SonarConfiguration getConfig();

  @NotNull SubcommandRegistry getSubcommandRegistry();
@@ -151,10 +151,4 @@ public final class AttackTracker {
      attackThreshold = 0;
    }
  }
-
-  @SuppressWarnings("BooleanMethodIsAlwaysInverted")
-  public boolean isCurrentlyUnderAttack() {
-    final int minDelay = Sonar.get().getConfig().getAttackCooldownDelay();
-    return currentAttack != null && currentAttack.timer.delay() < minDelay;
-  }
 }
@@ -28,30 +28,33 @@ import java.util.function.Predicate;

@Getter
@RequiredArgsConstructor
-public abstract class InvocationSource {
+public final class InvocationSource {
  private final UUID uuid;
  private final Audience audience;
-  private final boolean player;
  private final Predicate<String> permissionFunction;

  /**
-   * Sends an empty chat message to the command executor
+   * @return True, if {@link InvocationSource#uuid} is not null
+   * @apiNote This indicates a player as a player will always have a UUID
   */
-  public final void sendMessage() {
-    sendMessage(Component.empty());
+  public boolean isPlayer() {
+    return uuid != null;
  }

  /**
   * Sends a message to the command executor
+   *
+   * @apiNote We should probably use cached components...
+   * (See {@link InvocationSource#sendMessage(Component)})
   */
-  public final void sendMessage(final String legacy) {
+  public void sendMessage(final String legacy) {
    sendMessage(MiniMessage.miniMessage().deserialize(legacy));
  }

  /**
   * Sends a message to the command executor
   */
-  public final void sendMessage(final Component component) {
+  public void sendMessage(final Component component) {
    audience.sendMessage(component);
  }
 }
@@ -19,6 +19,7 @@ package xyz.jonesdev.sonar.api.command;

 import com.github.benmanes.caffeine.cache.Cache;
 import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Ticker;
 import net.kyori.adventure.audience.Audience;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
@@ -40,6 +41,7 @@ public interface SonarCommand {

  Cache<Audience, Long> COMMAND_DELAY = Caffeine.newBuilder()
    .expireAfterWrite(Duration.ofMillis(500))
+    .ticker(Ticker.systemTicker())
    .build();

  List<Component> CACHED_HELP_MESSAGE = new ArrayList<>();
@@ -52,10 +54,8 @@ public interface SonarCommand {
        return;
      }

-      COMMAND_DELAY.cleanUp(); // Clean up the cache
-
      final long timestamp = System.currentTimeMillis();
-      final long mapTimestamp = COMMAND_DELAY.asMap().getOrDefault(source.getAudience(), -1L);
+      final long mapTimestamp = COMMAND_DELAY.get(source.getAudience(), audience -> -1L);

      // There were some exploits with spamming commands in the past.
      // Spamming should be prevented, especially if some heavy operations are done,
@@ -53,13 +53,8 @@ public abstract class Subcommand {
    final InetAddress inetAddress;
    try {
      inetAddress = InetAddress.getByName(rawIP);
-
-      if (inetAddress.isAnyLocalAddress() || inetAddress.isLoopbackAddress()) {
-        source.sendMessage(SONAR.getConfig().getCommands().getIllegalIpAddress());
-        return null;
-      }
    } catch (UnknownHostException exception) {
-      source.sendMessage(SONAR.getConfig().getCommands().getIncorrectIpAddress());
+      source.sendMessage(SONAR.getConfig().getCommands().getInvalidIpAddress());
      return null;
    }
    return inetAddress;
@@ -21,6 +21,7 @@ import com.j256.ormlite.db.DatabaseType;
 import lombok.*;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.title.Title;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.Sonar;
@@ -171,27 +172,50 @@ public final class SonarConfiguration {

    // Verification
    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(" ");
+    }
+
    verification.gravity.enabled = generalConfig.getBoolean("verification.checks.gravity.enabled");
    verification.gravity.checkCollisions = generalConfig.getBoolean("verification.checks.gravity.check-collisions");
    verification.gravity.captchaOnFail = generalConfig.getBoolean("verification.checks.gravity.captcha-on-fail");
    verification.gravity.maxMovementTicks = clamp(generalConfig.getInt("verification.checks.gravity.max-movement-ticks"), 2, 100);
-    verification.gravity.maxIgnoredTicks = clamp(generalConfig.getInt("verification.checks.gravity.max-ignored-ticks"), 1, 128);
    verification.gravity.gamemode = Verification.Gravity.Gamemode.valueOf(generalConfig.getString("verification.checks.gravity.gamemode"));

+    verification.vehicle.timing = Verification.Timing.valueOf(generalConfig.getString("verification.checks.vehicle.timing"));
+
    verification.map.timing = Verification.Timing.valueOf(generalConfig.getString("verification.checks.map-captcha.timing"));
-    verification.map.randomizePositions = generalConfig.getBoolean("verification.checks.map-captcha.random-position");
-    verification.map.distortionsFactorX = clamp(generalConfig.getInt(
-      "verification.checks.map-captcha.distortions-factor-x"), 0, 100) / 100D;
-    verification.map.distortionsFactorY = clamp(generalConfig.getInt(
-      "verification.checks.map-captcha.distortions-factor-y"), 0, 100) / 100D;
-    verification.map.randomLinesAmount = generalConfig.getInt("verification.checks.map-captcha.random-lines");
-    verification.map.randomOvalsAmount = generalConfig.getInt("verification.checks.map-captcha.random-ovals");
-    verification.map.randomizeFontSize = generalConfig.getBoolean("verification.checks.map-captcha.random-font-size");
-    verification.map.precomputeAmount = generalConfig.getInt("verification.checks.map-captcha.precompute");
-    verification.map.maxDuration = generalConfig.getInt("verification.checks.map-captcha.max-duration");
+    verification.map.scratches = generalConfig.getBoolean("verification.checks.map-captcha.effects.scratches");
+    verification.map.ripple = generalConfig.getBoolean("verification.checks.map-captcha.effects.ripple");
+    verification.map.bump = generalConfig.getBoolean("verification.checks.map-captcha.effects.bump");
+
+    verification.map.distortion.enabled = generalConfig.getBoolean("verification.checks.map-captcha.effects.distortion.enabled");
+    verification.map.distortion.shape = generalConfig.getInt("verification.checks.map-captcha.effects.distortion.shape");
+    verification.map.distortion.distance = generalConfig.getInt("verification.checks.map-captcha.effects.distortion.distance");
+    verification.map.distortion.density = (float) generalConfig.getYaml().getDouble("verification.checks.map-captcha.effects.distortion.density");
+    verification.map.distortion.mix = (float) generalConfig.getYaml().getDouble("verification.checks.map-captcha.effects.distortion.mix");
+
+    final String backgroundImagePath = generalConfig.getString("verification.checks.map-captcha.background");
+    if (!backgroundImagePath.isEmpty()) {
+      verification.map.backgroundImage = new File(pluginFolder, backgroundImagePath);
+      if (!verification.map.backgroundImage.exists()) {
+        Sonar.get().getLogger().error("The background image does not exist! Please check the configuration.");
+      }
+    } else {
+      verification.map.backgroundImage = null;
+    }
+
+    verification.map.autoColor = generalConfig.getBoolean("verification.checks.map-captcha.auto-color");
+    verification.map.precomputeAmount = clamp(generalConfig.getInt("verification.checks.map-captcha.precompute"), 1, 1000);
+    verification.map.maxDuration = clamp(generalConfig.getInt("verification.checks.map-captcha.max-duration"), 5000, 360000);
    verification.map.maxTries = generalConfig.getInt("verification.checks.map-captcha.max-tries");
    verification.map.dictionary = generalConfig.getString("verification.checks.map-captcha.dictionary");
-    verification.map.fonts = generalConfig.getStringList("verification.checks.map-captcha.fonts");

    verification.brand.enabled = generalConfig.getBoolean("verification.checks.client-brand.enabled");
    verification.brand.validRegex = Pattern.compile(generalConfig.getString("verification.checks.client-brand.valid-regex"));
@@ -199,14 +223,23 @@ public final class SonarConfiguration {

    verification.validNameRegex = Pattern.compile(generalConfig.getString("verification.checks.valid-name-regex"));
    verification.validLocaleRegex = Pattern.compile(generalConfig.getString("verification.checks.valid-locale-regex"));
-    verification.maxPing = clamp(generalConfig.getInt("verification.checks.max-ping"), 500, 30000);
    verification.maxLoginPackets = clamp(generalConfig.getInt("verification.checks.max-login-packets"), 128, 8192);

+    verification.transfer.enabled = generalConfig.getBoolean("verification.transfer.enabled");
+    verification.transfer.host = generalConfig.getString("verification.transfer.destination-host");
+    verification.transfer.port = clamp(generalConfig.getInt("verification.transfer.destination-port"), 0, 0xffff);
+
+    if (verification.transfer.enabled) {
+      Sonar.get().getLogger().info("Transferring 1.20.5+ clients is enabled. Please make sure to follow the instructions in order for this to work properly.");
+    }
+
+    verification.checkGeyser = generalConfig.getBoolean("verification.check-geyser-players");
    verification.logConnections = generalConfig.getBoolean("verification.log-connections");
    verification.logDuringAttack = generalConfig.getBoolean("verification.log-during-attack");
    verification.debugXYZPositions = generalConfig.getBoolean("verification.debug-xyz-positions");
    verification.readTimeout = clamp(generalConfig.getInt("verification.read-timeout"), 500, 30000);
    verification.reconnectDelay = clamp(generalConfig.getInt("verification.rejoin-delay"), 0, 100000);
+    verification.rememberTime = clamp(generalConfig.getInt("verification.remember-time"), 0, 86400000);
    verification.blacklistTime = clamp(generalConfig.getInt("verification.blacklist-time"), 0, 86400000);
    verification.blacklistThreshold = clamp(generalConfig.getInt("verification.blacklist-threshold"), 0, 100);
    verification.whitelistedProtocols.clear();
@@ -253,8 +286,7 @@ public final class SonarConfiguration {

    noPermission = formatString(messagesConfig.getString("commands.no-permission"));
    commands.incorrectCommandUsage = formatString(messagesConfig.getString("commands.incorrect-usage"));
-    commands.incorrectIpAddress = formatString(messagesConfig.getString("commands.invalid-ip-address"));
-    commands.illegalIpAddress = formatString(messagesConfig.getString("commands.illegal-ip-address"));
+    commands.invalidIpAddress = formatString(messagesConfig.getString("commands.invalid-ip-address"));
    commands.playersOnly = formatString(messagesConfig.getString("commands.player-only"));
    commands.consoleOnly = formatString(messagesConfig.getString("commands.console-only"));
    commands.commandCoolDown = formatString(messagesConfig.getString("commands.cool-down"));
@@ -287,6 +319,8 @@ public final class SonarConfiguration {
    commands.verifiedCleared = formatString(messagesConfig.getString("commands.verified.cleared"));
    commands.verifiedSize = formatString(messagesConfig.getString("commands.verified.size"));
    commands.verifiedRemove = formatString(messagesConfig.getString("commands.verified.removed"));
+    commands.verifiedAdd = formatString(messagesConfig.getString("commands.verified.added"));
+    commands.verifiedAlready = formatString(messagesConfig.getString("commands.verified.already"));
    commands.verifiedNotFound = formatString(messagesConfig.getString("commands.verified.ip-not-found"));
    commands.verifiedBlocked = formatString(messagesConfig.getString("commands.verified.blocked"));

@@ -303,7 +337,6 @@ public final class SonarConfiguration {
    verification.successLog = formatString(messagesConfig.getString("verification.logs.successful"));

    verification.map.enterCode = deserialize(formatString(messagesConfig.getString("verification.captcha.enter-code")));
-    verification.map.enterCodeActionBar = formatString(messagesConfig.getString("verification.captcha.action-bar"));
    verification.map.failedCaptcha = deserialize(formatString(messagesConfig.getString("verification.captcha.incorrect")));
    verification.currentlyPreparing = deserialize(fromList(messagesConfig.getStringList("verification.currently-preparing")));
    verification.tooFastReconnect = deserialize(fromList(messagesConfig.getStringList("verification.too-fast-reconnect")));
@@ -315,13 +348,16 @@ public final class SonarConfiguration {
    verification.verificationSuccess = deserialize(fromList(messagesConfig.getStringList("verification.success")));
    verification.verificationFailed = deserialize(fromList(messagesConfig.getStringList("verification.failed")));

-    verbose.actionBarLayout = formatString(messagesConfig.getString("verbose.layout.normal"));
-    verbose.actionBarLayoutDuringAttack = formatString(messagesConfig.getString("verbose.layout.attack"));
+    verbose.actionBarLayout = deserialize(formatString(messagesConfig.getString("verbose.layout.normal")));
+    verbose.actionBarLayoutDuringAttack = deserialize(formatString(messagesConfig.getString("verbose.layout.attack")));
    verbose.animation = Collections.unmodifiableList(messagesConfig.getStringList("verbose.animation"));

    notifications.notificationTitle = deserialize(formatString(messagesConfig.getString("notifications.title")));
    notifications.notificationSubtitle = deserialize(formatString(messagesConfig.getString("notifications.subtitle")));
-    notifications.notificationChat = formatString(fromList(messagesConfig.getStringList("notifications.chat")));
+    notifications.title = Title.title(
+      Sonar.get().getConfig().getNotifications().getNotificationTitle(),
+      Sonar.get().getConfig().getNotifications().getNotificationSubtitle());
+    notifications.notificationChat = deserialize(formatString(fromList(messagesConfig.getStringList("notifications.chat"))));
  }

  private @NotNull URL getAsset(final String url, final @NotNull Language language) {
@@ -335,7 +371,11 @@ public final class SonarConfiguration {
  }

  private static int clamp(final int v, final int max, final int min) {
-    return Math.max(Math.min(v, min), max);
+    final int output = Math.max(Math.min(v, min), max);
+    if (output != v) {
+      Sonar.get().getLogger().warn("Clamped configuration value {} to {}", v, output);
+    }
+    return output;
  }

  public String formatAddress(final InetAddress inetAddress) {
@@ -396,17 +436,18 @@ public final class SonarConfiguration {
  @Getter
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public static final class Verbose {
-    private String actionBarLayout;
-    private String actionBarLayoutDuringAttack;
+    private Component actionBarLayout;
+    private Component actionBarLayoutDuringAttack;
    private List<String> animation;
  }

  @Getter
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public static final class Notifications {
+    private Title title;
    private Component notificationTitle;
    private Component notificationSubtitle;
-    private String notificationChat;
+    private Component notificationChat;
  }

  @Getter
@@ -432,25 +473,35 @@ public final class SonarConfiguration {

    private final Map map = new Map();
    private final Gravity gravity = new Gravity();
+    private final Vehicle vehicle = new Vehicle();
    private final Brand brand = new Brand();
+    private final Transfer transfer = new Transfer();

    @Getter
    public static final class Map {
      private Timing timing;
-      private boolean randomizePositions;
-      private boolean randomizeFontSize;
-      private double distortionsFactorX;
-      private double distortionsFactorY;
-      private int randomLinesAmount;
-      private int randomOvalsAmount;
+      private boolean scratches;
+      private boolean ripple;
+      private boolean bump;
+      private File backgroundImage;
+      private boolean autoColor;
      private int precomputeAmount;
      private int maxDuration;
      private int maxTries;
      private String dictionary;
      private Component enterCode;
      private Component failedCaptcha;
-      private String enterCodeActionBar;
-      private List<String> fonts;
+
+      private Smear distortion = new Smear();
+
+      @Getter
+      public static final class Smear {
+        private boolean enabled;
+        private int shape;
+        private int distance;
+        private float density;
+        private float mix;
+      }
    }

    @Getter
@@ -460,7 +511,6 @@ public final class SonarConfiguration {
      private boolean captchaOnFail;
      private Gamemode gamemode;
      private int maxMovementTicks;
-      private int maxIgnoredTicks;

      @Getter
      @RequiredArgsConstructor
@@ -475,6 +525,11 @@ public final class SonarConfiguration {
      }
    }

+    @Getter
+    public static final class Vehicle {
+      private Timing timing;
+    }
+
    @Getter
    public static final class Brand {
      private boolean enabled;
@@ -482,6 +537,14 @@ public final class SonarConfiguration {
      private Pattern validRegex;
    }

+    @Getter
+    public static final class Transfer {
+      private boolean enabled;
+      private String host;
+      private int port;
+    }
+
+    private boolean checkGeyser;
    private boolean logConnections;
    private boolean logDuringAttack;
    private boolean debugXYZPositions;
@@ -493,9 +556,9 @@ public final class SonarConfiguration {
    private String blacklistLog;

    private int maxLoginPackets;
-    private int maxPing;
    private int readTimeout;
    private int reconnectDelay;
+    private int rememberTime;
    private int blacklistTime;
    private int blacklistThreshold;
    private final Collection<Integer> whitelistedProtocols = new HashSet<>(0);
@@ -516,8 +579,7 @@ public final class SonarConfiguration {
  @NoArgsConstructor(access = AccessLevel.PRIVATE)
  public static final class Commands {
    private String incorrectCommandUsage;
-    private String incorrectIpAddress;
-    private String illegalIpAddress;
+    private String invalidIpAddress;
    private String subCommandNoPerm;
    private String playersOnly;
    private String consoleOnly;
@@ -534,6 +596,8 @@ public final class SonarConfiguration {
    private String blacklistSize;

    private String verifiedRemove;
+    private String verifiedAdd;
+    private String verifiedAlready;
    private String verifiedNotFound;
    private String verifiedCleared;
    private String verifiedSize;
@@ -238,11 +238,11 @@ public final class VerifiedPlayerController {
   */
  private void _add(final @NotNull VerifiedPlayer player) {
    cache.computeIfAbsent(player.getInetAddress(), v -> new ArrayList<>())
-      .add(player.getPlayerUUID());
+      .add(player.getPlayerUuid());
  }

  /**
-   * Returns the amount of verified IP addresses
+   * Returns the number of verified IP addresses
   *
   * @return Estimated size of the local cache
   */
@@ -310,13 +310,4 @@ public final class VerifiedPlayerController {
  public boolean has(final @NotNull String inetAddress) {
    return cache.containsKey(inetAddress);
  }
-
-  /**
-   * @param inetAddress IP address
-   * @return Whether the local cache contains the IP
-   * @see #has(String)
-   */
-  public boolean has(final @NotNull InetAddress inetAddress) {
-    return has(inetAddress.toString());
-  }
 }
@@ -19,23 +19,17 @@ package xyz.jonesdev.sonar.api.event.impl;

 import lombok.EqualsAndHashCode;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 import lombok.ToString;
-import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.event.SonarEvent;
 import xyz.jonesdev.sonar.api.fallback.FallbackUser;

-import java.util.Optional;
-
@Getter
@ToString
@EqualsAndHashCode
+@RequiredArgsConstructor
 public final class UserVerifyFailedEvent implements SonarEvent {
-  private final FallbackUser user;
-  @SuppressWarnings("OptionalUsedAsFieldOrParameterType")
-  private final Optional<String> reason;
-
-  public UserVerifyFailedEvent(final FallbackUser user, final @Nullable String reason) {
-    this.user = user;
-    this.reason = Optional.ofNullable(reason);
-  }
+  private final @NotNull FallbackUser user;
+  private final @NotNull String reason;
 }
@@ -28,57 +28,60 @@ import xyz.jonesdev.sonar.api.config.SonarConfiguration;
 import xyz.jonesdev.sonar.api.logger.LoggerWrapper;

 import java.net.InetAddress;
-import java.util.Map;
-import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;

@Getter
@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public final class Fallback {
  public static final Fallback INSTANCE = new Fallback();
-  private static final @NotNull Sonar SONAR = Objects.requireNonNull(Sonar.get());

-  // Map of all connected usernames and their respective IP addresses (used for fast checking)
-  private final Map<String, InetAddress> connected = new ConcurrentHashMap<>(64, 0.75f);
+  // 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
  @Setter
  private Cache<InetAddress, Byte> blacklist;
  @Setter
  private long blacklistTime;

-  private final @NotNull FallbackQueue queue = FallbackQueue.INSTANCE;
-  private final @NotNull FallbackRatelimiter ratelimiter = FallbackRatelimiter.INSTANCE;
+  private final @NotNull FallbackQueue queue = new FallbackQueue();
+  private final @NotNull FallbackRatelimiter ratelimiter = new FallbackRatelimiter();

  private final LoggerWrapper logger = new LoggerWrapper() {

    @Override
    public void info(final String message, final Object... args) {
-      SONAR.getLogger().info("[fallback] " + message, args);
+      Sonar.get().getLogger().info("[fallback] " + message, args);
    }

    @Override
    public void warn(final String message, final Object... args) {
-      SONAR.getLogger().warn("[fallback] " + message, args);
+      Sonar.get().getLogger().warn("[fallback] " + message, args);
    }

    @Override
    public void error(final String message, final Object... args) {
-      SONAR.getLogger().error("[fallback] " + message, args);
+      Sonar.get().getLogger().error("[fallback] " + message, args);
    }
  };

-  @SuppressWarnings("BooleanMethodIsAlwaysInverted")
  public boolean shouldVerifyNewPlayers() {
-    return performTimingCheck(Sonar.get().getConfig().getVerification().getTiming());
+    return shouldPerform(Sonar.get().getConfig().getVerification().getTiming());
  }

-  public boolean shouldDoMapCaptcha() {
-    return performTimingCheck(Sonar.get().getConfig().getVerification().getMap().getTiming());
+  public boolean shouldPerformCaptcha() {
+    return shouldPerform(Sonar.get().getConfig().getVerification().getMap().getTiming());
  }

-  private boolean performTimingCheck(final SonarConfiguration.Verification.Timing timing) {
+  public boolean shouldPerformVehicleCheck() {
+    return shouldPerform(Sonar.get().getConfig().getVerification().getVehicle().getTiming());
+  }
+
+  private static boolean shouldPerform(final SonarConfiguration.Verification.Timing timing) {
    return timing == SonarConfiguration.Verification.Timing.ALWAYS
      || (timing == SonarConfiguration.Verification.Timing.DURING_ATTACK
-      && Sonar.get().getAttackTracker().isCurrentlyUnderAttack());
+      && Sonar.get().getAttackTracker().getCurrentAttack() != null);
  }
 }
@@ -26,51 +26,33 @@ 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;
+import java.util.concurrent.Executors;

@Getter
-@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
+@RequiredArgsConstructor(access = AccessLevel.PROTECTED)
 public final class FallbackQueue {
-  static final FallbackQueue INSTANCE = new FallbackQueue();
-  private final Map<InetAddress, Runnable> queuedPlayers = new ConcurrentHashMap<>(64);
+  // 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);

-  // Runnable task executed for polling the queue
-  private final Runnable pollTask = () -> {
+  private final ConcurrentMap<InetAddress, Runnable> queuedPlayers = new ConcurrentHashMap<>(
+    128, 0.75f, Runtime.getRuntime().availableProcessors());
+
+  public void poll() {
    final int maxQueuePolls = Sonar.get().getConfig().getQueue().getMaxQueuePolls();
    int index = 0;

-    // We need to be cautious here since we don't want any concurrency issues.
+    // Iterate through the map and process up to maxQueuePolls entries
+    // We need to be cautious here since we don't want any concurrency issues
    final Iterator<Map.Entry<InetAddress, Runnable>> iterator = queuedPlayers.entrySet().iterator();
-    while (iterator.hasNext()) {
-      // Break if we reached our maximum entries
-      if (++index > maxQueuePolls) {
-        break;
-      }
+    while (iterator.hasNext() && index++ < maxQueuePolls) {
      // Run the cached runnable
      final Map.Entry<InetAddress, Runnable> entry = iterator.next();
-      entry.getValue().run();
-      // Remove runnable from iterator
+      QUEUE_EXECUTOR.execute(entry.getValue());
+      // Remove runnable from the map
      iterator.remove();
    }
-
-    // Run the attack check task
-    Sonar.get().getAttackTracker().checkIfUnderAttack();
-    // Clean up the cache of rate-limited IPs
-    Sonar.get().getFallback().getRatelimiter().cleanUpCache();
-  };
-
-  /**
-   * @param inetAddress IP address of the player
-   * @param runnable    Queued action on the netty thread
-   * @see #remove
-   */
-  public void queue(final InetAddress inetAddress, final Runnable runnable) {
-    queuedPlayers.put(inetAddress, runnable);
-  }
-
-  /**
-   * @param inetAddress IP address of the player
-   */
-  public void remove(final InetAddress inetAddress) {
-    queuedPlayers.remove(inetAddress);
  }
 }
@@ -19,6 +19,7 @@ package xyz.jonesdev.sonar.api.fallback;

 import com.github.benmanes.caffeine.cache.Cache;
 import lombok.AccessLevel;
+import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 import org.jetbrains.annotations.NotNull;
@@ -26,35 +27,39 @@ import org.jetbrains.annotations.NotNull;
 import java.net.InetAddress;

@Setter
-@NoArgsConstructor(access = AccessLevel.PRIVATE)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public final class FallbackRatelimiter {
-  static final FallbackRatelimiter INSTANCE = new FallbackRatelimiter();
-  private Cache<InetAddress, Byte> expiringCache;
+  private long timeout;
+  private Cache<InetAddress, Long> attemptCache;
+  @Getter
+  private Cache<InetAddress, Integer> failCountCache;

  /**
-   * We don't want to clean up the cache in the
-   * {@link #attempt(InetAddress)} method because
-   * it would take up too many resources.
-   */
-  public void cleanUpCache() {
-    expiringCache.cleanUp();
-  }
-
-  /**
-   * Checks if the player has tried verifying too fast
+   * Attempts to rate-limit the client
   *
   * @param inetAddress IP address of the player
   * @return Whether the player is allowed to verify
   */
-  @SuppressWarnings("BooleanMethodIsAlwaysInverted")
  public boolean attempt(final @NotNull InetAddress inetAddress) {
-    // Cache the IP address if it's not already cached
-    if (!expiringCache.asMap().containsKey(inetAddress)) {
-      // Cache the IP address
-      expiringCache.put(inetAddress, (byte) 0);
-      return true;
+    final long expectedTimestamp = System.currentTimeMillis() + timeout;
+    // Check if the time since the last join has not exceeded the timeout
+    // The idea for this check was Taken from Velocity
+    final long last = attemptCache.get(inetAddress, result -> expectedTimestamp);
+    return expectedTimestamp == last;
+  }
+
+  /**
+   * Checks if the player is failing verifications too often
+   * Increments the number of times this user has failed the verification
+   *
+   * @param inetAddress IP address of the player
+   * @param count       Count of previously failed verifications
+   */
+  public void incrementFails(final @NotNull InetAddress inetAddress, final int count) {
+    // Make sure to remove the old values from the cache
+    if (count > 0) {
+      failCountCache.invalidate(inetAddress);
    }
-    // Deny the connection attempt
-    return false;
+    failCountCache.put(inetAddress, count + 1);
  }
 }
@@ -17,34 +17,53 @@

 package xyz.jonesdev.sonar.api.fallback;

-import com.github.benmanes.caffeine.cache.Cache;
-import com.github.benmanes.caffeine.cache.Caffeine;
 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.ApiStatus;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.api.timer.SystemTimer;

 import java.net.InetAddress;
-import java.time.Duration;
-import java.util.Objects;
 import java.util.UUID;

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

-  @NotNull InetAddress getInetAddress();
+  @NotNull
+  ChannelPipeline getPipeline();

-  @NotNull ProtocolVersion getProtocolVersion();
+  @NotNull
+  InetAddress getInetAddress();
+
+  @NotNull
+  ProtocolVersion getProtocolVersion();
+
+  @NotNull
+  SystemTimer getLoginTimer();
+
+  boolean isReceivedClientSettings();
+
+  void setReceivedClientSettings(final boolean receivedClientSettings);
+
+  boolean isReceivedPluginMessage();
+
+  void setReceivedPluginMessage(final boolean receivedPluginMessage);
+
+  boolean isGeyser();

  /**
   * Disconnect the player during/after verification
   * using our custom Disconnect packet.
   *
-   * @param reason Disconnect message component
+   * @param reason      Disconnect message component
+   * @param duringLogin True, if the player has not joined yet
   */
-  void disconnect(final @NotNull Component reason);
+  @ApiStatus.Internal
+  void disconnect(final @NotNull Component reason, final boolean duringLogin);

  /**
   * Takes over the channel and begins the verification process
@@ -54,11 +73,11 @@ public interface FallbackUser {
   * @param encoder  Name of the encoder pipeline
   * @param decoder  Name of the decoder pipeline
   * @param timeout  Name of the read timeout pipeline
-   * @param boss     Name of the main pipeline
+   * @param handler  Name of the main pipeline
   */
  void hijack(final @NotNull String username, final @NotNull UUID uuid,
              final @NotNull String encoder, final @NotNull String decoder,
-              final @NotNull String timeout, final @NotNull String boss);
+              final @NotNull String timeout, final @NotNull String handler);

  /**
   * Sends a packet/message to the player
@@ -85,40 +104,6 @@ public interface FallbackUser {
    }
  }

-  Cache<InetAddress, Integer> GLOBAL_FAIL_COUNT = Caffeine.newBuilder()
-    .expireAfterWrite(Duration.ofMinutes(5)) // expire after 5 minutes
-    .build();
-
-  /**
-   * Increments the number of times this user (by IP address) has failed the verification
-   */
-  default void incrementFails() {
-    final InetAddress inetAddress = Objects.requireNonNull(getInetAddress());
-    final int failCount = getFailedCount();
-    // Make sure to remove the old values from the cache
-    if (failCount > 0) {
-      GLOBAL_FAIL_COUNT.invalidate(inetAddress);
-    }
-    GLOBAL_FAIL_COUNT.put(inetAddress, failCount + 1);
-  }
-
-  /**
-   * @return The number of times this user (by IP address) has failed the verification
-   * @apiNote Returns 0 if no key/value is present in the cache
-   */
-  default int getFailedCount() {
-    // Make sure to clean up the cache before we try to get cached values
-    GLOBAL_FAIL_COUNT.cleanUp();
-    return GLOBAL_FAIL_COUNT.asMap().getOrDefault(Objects.requireNonNull(getInetAddress()), 0);
-  }
-
-  /**
-   * Removes all previously failed verifications
-   */
-  default void invalidateFails() {
-    GLOBAL_FAIL_COUNT.invalidate(Objects.requireNonNull(getInetAddress()));
-  }
-
  /**
   * Disconnects the player who failed the verification
   * and caches them in FAILED_VERIFICATIONS.
@@ -126,6 +111,8 @@ public interface FallbackUser {
   * 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 @Nullable String reason);
+  void fail(final @NotNull String reason);
 }
@@ -68,7 +68,8 @@ public enum ProtocolVersion {
  MINECRAFT_1_19_4(762),
  MINECRAFT_1_20(763),
  MINECRAFT_1_20_2(764),
-  MINECRAFT_1_20_3(765);
+  MINECRAFT_1_20_3(765),
+  MINECRAFT_1_20_5(766);

  private final int protocol;

@@ -21,60 +21,94 @@ import com.sun.management.OperatingSystemMXBean;
 import lombok.experimental.UtilityClass;

 import java.lang.management.ManagementFactory;
+import java.text.DecimalFormat;

@UtilityClass
 public class JVMProcessInformation {
  private final Runtime RUNTIME = Runtime.getRuntime();
  private final OperatingSystemMXBean MX = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();
  private final char[] MEMORY_UNITS = {'K', 'M', 'G', 'T', 'P', 'E'};
+  private final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("#.#");

  public String formatMemory(final long size) {
    if (size < 1024L) {
      return size + " B";
    }
+    // https://stackoverflow.com/questions/3758606/how-can-i-convert-byte-size-into-a-human-readable-format-in-java
    final int group = (63 - Long.numberOfLeadingZeros(size)) / 10;
    final double formattedSize = (double) size / (1L << (group * 10));
    final char unit = MEMORY_UNITS[group - 1];
    // https://en.wikipedia.org/wiki/Byte#Multiple-byte_units
-    return String.format("%.1f %siB", formattedSize, unit);
+    return DECIMAL_FORMAT.format(formattedSize) + " " + unit + "iB";
  }

+  /**
+   * @return Number of available processors for the JVM
+   */
  public int getVirtualCores() {
    return RUNTIME.availableProcessors();
  }

+  /**
+   * @return Current process CPU usage in percent
+   */
  public double getProcessCPUUsage() {
    return MX.getProcessCpuLoad() * 100;
  }

+  /**
+   * @return Current per-core process CPU usage in percent
+   */
  public double getAverageProcessCPUUsage() {
    return getProcessCPUUsage() / getVirtualCores();
  }

+  /**
+   * @return Current system CPU usage in percent
+   */
  public double getSystemCPUUsage() {
    return MX.getSystemCpuLoad() * 100;
  }

+  /**
+   * @return Current per-core system CPU usage in percent
+   */
  public double getAverageSystemCPUUsage() {
    return getSystemCPUUsage() / getVirtualCores();
  }

+  /**
+   * @return Current system load average in percent
+   * @apiNote This returns the global process load, not the CPU usage
+   */
  public double getSystemLoadAverage() {
    return MX.getSystemLoadAverage() * 100;
  }

+  /**
+   * @return Memory (in bytes) the JVM will attempt to use
+   */
  public long getMaxMemory() {
    return RUNTIME.maxMemory();
  }

+  /**
+   * @return Memory (in bytes) available to the host machine
+   */
  public long getTotalMemory() {
    return RUNTIME.totalMemory();
  }

+  /**
+   * @return Memory (in bytes) the JVM can allocate
+   */
  public long getFreeMemory() {
    return RUNTIME.freeMemory();
  }

+  /**
+   * @return Memory (in bytes) the JVM is using
+   */
  public long getUsedMemory() {
    return getTotalMemory() - getFreeMemory();
  }
@@ -23,7 +23,9 @@ import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.ToString;
+import org.jetbrains.annotations.NotNull;

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

@@ -50,7 +52,7 @@ public final class VerifiedPlayer {
    uniqueIndexName = "ip_address_player_uuid_idx",
    width = 36
  )
-  private UUID playerUUID;
+  private UUID playerUuid;

  @DatabaseField(
    columnName = "timestamp",
@@ -58,9 +60,11 @@ public final class VerifiedPlayer {
  )
  private Timestamp timestamp;

-  public VerifiedPlayer(final String inetAddress, final UUID playerUUID, final long timestamp) {
-    this.inetAddress = inetAddress;
-    this.playerUUID = playerUUID;
+  public VerifiedPlayer(final @NotNull InetAddress inetAddress,
+                        final @NotNull UUID playerUuid,
+                        final long timestamp) {
+    this.inetAddress = inetAddress.toString();
+    this.playerUuid = playerUuid;
    this.timestamp = new Timestamp(timestamp);
  }
 }
@@ -22,6 +22,11 @@ import org.jetbrains.annotations.NotNull;

 public final class MariaDbDatabaseTypeAdapter extends MariaDbDatabaseType {

+  /**
+   * We need to override the default driver class name
+   * in order to use the custom relocated MariaDB driver
+   * Read more: {@link MysqlDatabaseTypeAdapter}
+   */
  @Override
  protected String @NotNull [] getDriverClassNames() {
    return new String[]{"xyz.jonesdev.sonar.libs.mariadb.jdbc.Driver"};
@@ -22,6 +22,11 @@ import org.jetbrains.annotations.NotNull;

 public final class MysqlDatabaseTypeAdapter extends MysqlDatabaseType {

+  /**
+   * We need to override the default driver class name
+   * in order to use the custom relocated MySQL driver
+   * Read more: {@link MariaDbDatabaseTypeAdapter}
+   */
  @Override
  protected String @NotNull [] getDriverClassNames() {
    return new String[]{"xyz.jonesdev.sonar.libs.mysql.cj.jdbc.Driver"};
@@ -19,41 +19,98 @@ package xyz.jonesdev.sonar.api.statistics;

 import org.jetbrains.annotations.ApiStatus;

+@SuppressWarnings("unused")
 public interface SonarStatistics {
+
+  /**
+   * @return Number of connection establishments per second
+   */
  long getConnectionsPerSecond();

+  /**
+   * @return Number of logins per second
+   */
  long getLoginsPerSecond();

+  /**
+   * @return Currently incoming bytes per second
+   */
  long getCurrentIncomingBandwidth();

+  /**
+   * @return Currently outgoing bytes per second
+   */
  long getCurrentOutgoingBandwidth();

+  /**
+   * @return Total incoming bytes per second
+   */
  long getTotalIncomingBandwidth();

+  /**
+   * @return Total outgoing bytes per second
+   */
  long getTotalOutgoingBandwidth();

+  /**
+   * @return Same as {@link SonarStatistics#getCurrentIncomingBandwidth} but formatted
+   */
  String getCurrentIncomingBandwidthFormatted();

+  /**
+   * @return Same as {@link SonarStatistics#getCurrentOutgoingBandwidth} but formatted
+   */
  String getCurrentOutgoingBandwidthFormatted();

+  /**
+   * @return Same as {@link SonarStatistics#getTotalIncomingBandwidth} but formatted
+   */
  String getTotalIncomingBandwidthFormatted();

+  /**
+   * @return Same as {@link SonarStatistics#getTotalOutgoingBandwidth} but formatted
+   */
  String getTotalOutgoingBandwidthFormatted();

+  /**
+   * @return Total number of players who logged into the server
+   */
  int getTotalPlayersJoined();

+  /**
+   * @return Total number of players who tried to verify
+   */
  int getTotalPlayersVerified();

+  /**
+   * @return Total number of players who passed the verification
+   */
  int getTotalSuccessfulVerifications();

+  /**
+   * @return Total number of players who failed the verification
+   */
  int getTotalFailedVerifications();

+  /**
+   * @return Total number of players who passed the verification
+   */
  long getCurrentAttemptedVerifications();

+  /**
+   * @return Total number of players who tried verifying
+   */
  int getTotalAttemptedVerifications();

+  /**
+   * @return Current number of IP addresses that are blacklisted
+   */
  long getCurrentBlacklistSize();

+  /**
+   * @return Total number of cases where an IP was blacklisted
+   * @apiNote This does not describe the current number of blacklisted IPs
+   */
  long getTotalBlacklistSize();

  @ApiStatus.Internal
@@ -18,13 +18,12 @@
 package xyz.jonesdev.sonar.api.timer;

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

 import java.text.SimpleDateFormat;

@Getter
 public final class SystemTimer {
-  private static final SimpleDateFormat FORMATTER = new SimpleDateFormat("mm:ss");
+  public static final SimpleDateFormat DATE_FORMATTER = new SimpleDateFormat("mm:ss");

  private long start = System.currentTimeMillis();

@@ -32,18 +31,20 @@ public final class SystemTimer {
    start = System.currentTimeMillis();
  }

+  /**
+   * @return Time between the current timestamp and the start timestamp
+   */
  public long delay() {
    return System.currentTimeMillis() - start;
  }

+  /**
+   * @apiNote Read more: {@link SystemTimer#delay}
+   */
  public boolean elapsed(final long amount) {
    return delay() >= amount;
  }

-  public @NotNull String formattedDelay() {
-    return FORMATTER.format(delay());
-  }
-
  @Override
  public String toString() {
    return String.format("%.3f", delay() / 1000D);
@@ -20,57 +20,33 @@ package xyz.jonesdev.sonar.api.verbose;
 import lombok.Getter;
 import net.kyori.adventure.audience.Audience;
 import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.minimessage.MiniMessage;
-import net.kyori.adventure.title.Title;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.statistics.SonarStatistics;

 import java.util.Collection;
 import java.util.UUID;
 import java.util.Vector;

-import static xyz.jonesdev.sonar.api.Sonar.DECIMAL_FORMAT;
-
@Getter
 public final class Notification implements Observable {
  private final @NotNull Collection<UUID> subscribers = new Vector<>(0);

  public void sendAttackNotification() {
-    // No need to do anything if we have no subscribers
-    if (subscribers.isEmpty()) return;
-    final SonarStatistics statistics = Sonar.get().getStatistics();
-    // Prepare the title
-    // TODO: Why do custom title times not work?
-    //  Title.Times.times(Ticks.duration(5L), Ticks.duration(60L), Ticks.duration(10L));
-    final Title title = Title.title(
-      Sonar.get().getConfig().getNotifications().getNotificationTitle(),
-      Sonar.get().getConfig().getNotifications().getNotificationSubtitle());
-    // Prepare the chat message
-    final Component chat = MiniMessage.miniMessage().deserialize(
-      Sonar.get().getConfig().getNotifications().getNotificationChat()
-        .replace("%queued%",
-          DECIMAL_FORMAT.format(Sonar.get().getFallback().getQueue().getQueuedPlayers().size()))
-        .replace("%verifying%", DECIMAL_FORMAT.format(Sonar.get().getFallback().getConnected().size()))
-        .replace("%blacklisted%",
-          DECIMAL_FORMAT.format(Sonar.get().getFallback().getBlacklist().estimatedSize()))
-        .replace("%total-joins%", DECIMAL_FORMAT.format(statistics.getTotalPlayersJoined()))
-        .replace("%logins-per-second%", DECIMAL_FORMAT.format(statistics.getLoginsPerSecond()))
-        .replace("%connections-per-second%", DECIMAL_FORMAT.format(statistics.getConnectionsPerSecond()))
-        .replace("%verify-total%", DECIMAL_FORMAT.format(statistics.getTotalAttemptedVerifications()))
-        .replace("%verify-success%",
-          DECIMAL_FORMAT.format(Sonar.get().getVerifiedPlayerController().estimatedSize()))
-        .replace("%verify-failed%", DECIMAL_FORMAT.format(statistics.getTotalFailedVerifications()))
-        .replace("%incoming-traffic%", statistics.getCurrentIncomingBandwidthFormatted())
-        .replace("%outgoing-traffic%", statistics.getCurrentOutgoingBandwidthFormatted())
-        .replace("%incoming-traffic-ttl%", statistics.getTotalIncomingBandwidthFormatted())
-        .replace("%outgoing-traffic-ttl%", statistics.getTotalOutgoingBandwidthFormatted()));
+    // Don't prepare component if there are no subscribers
+    Component chat = null;
    // Send the title and chat messages to all online players
    for (final UUID subscriber : Sonar.get().getNotificationHandler().getSubscribers()) {
      final Audience audience = Sonar.get().audience(subscriber);
      if (audience == null) continue;
-      audience.showTitle(title);
+
+      // Only prepare component if there are subscribers
+      if (chat == null) {
+        chat = replaceStatistic(Sonar.get().getConfig().getNotifications().getNotificationChat());
+      }
+      // Send the message to all online subscribers
      audience.sendMessage(chat);
+      // Send the title to all online subscribers
+      audience.showTitle(Sonar.get().getConfig().getNotifications().getTitle());
    }
  }
 }
@@ -17,11 +17,18 @@

 package xyz.jonesdev.sonar.api.verbose;

+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.TextReplacementConfig;
 import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.statistics.SonarStatistics;

 import java.util.Collection;
 import java.util.UUID;

+import static xyz.jonesdev.sonar.api.Sonar.DECIMAL_FORMAT;
+import static xyz.jonesdev.sonar.api.jvm.JVMProcessInformation.*;
+
 public interface Observable {
  Collection<UUID> getSubscribers();

@@ -46,4 +53,61 @@ public interface Observable {
  default void unsubscribe(final UUID uuid) {
    getSubscribers().remove(uuid);
  }
+
+  // TODO: Make this a bit prettier and better for performance
+  default @NotNull Component replaceStatistic(final @NotNull Component component) {
+    final SonarStatistics statistics = Sonar.get().getStatistics();
+    return component
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%queued%")
+        .replacement(DECIMAL_FORMAT.format(Sonar.get().getFallback().getQueue().getQueuedPlayers().size()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%verifying%")
+        .replacement(DECIMAL_FORMAT.format(Sonar.get().getFallback().getConnected().size()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%blacklisted%")
+        .replacement(DECIMAL_FORMAT.format(Sonar.get().getFallback().getBlacklist().estimatedSize()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%total-joins%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getTotalPlayersJoined()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%logins-per-second%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getLoginsPerSecond()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%connections-per-second%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getConnectionsPerSecond()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%verify-total%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getTotalAttemptedVerifications()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%verify-success%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getTotalSuccessfulVerifications()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%verify-failed%")
+        .replacement(DECIMAL_FORMAT.format(statistics.getTotalFailedVerifications()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%incoming-traffic%")
+        .replacement(statistics.getCurrentIncomingBandwidthFormatted())
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%outgoing-traffic%")
+        .replacement(statistics.getCurrentOutgoingBandwidthFormatted())
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%incoming-traffic-ttl%")
+        .replacement(statistics.getTotalIncomingBandwidthFormatted())
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%outgoing-traffic-ttl%")
+        .replacement(statistics.getTotalOutgoingBandwidthFormatted())
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%used-memory%")
+        .replacement(formatMemory(getUsedMemory()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%free-memory%")
+        .replacement(formatMemory(getFreeMemory()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%total-memory%")
+        .replacement(formatMemory(getTotalMemory()))
+        .build())
+      .replaceText(TextReplacementConfig.builder().once().matchLiteral("%max-memory%")
+        .replacement(formatMemory(getMaxMemory()))
+        .build());
+  }
 }
@@ -18,22 +18,19 @@
 package xyz.jonesdev.sonar.api.verbose;

 import lombok.Getter;
-import lombok.val;
 import net.kyori.adventure.audience.Audience;
 import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.TextReplacementConfig;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.attack.AttackTracker;
-import xyz.jonesdev.sonar.api.statistics.SonarStatistics;
 import xyz.jonesdev.sonar.api.timer.SystemTimer;

 import java.util.Collection;
 import java.util.UUID;
 import java.util.Vector;

-import static xyz.jonesdev.sonar.api.Sonar.DECIMAL_FORMAT;
-import static xyz.jonesdev.sonar.api.jvm.JVMProcessInformation.*;
+import static xyz.jonesdev.sonar.api.timer.SystemTimer.DATE_FORMATTER;

@Getter
 public final class Verbose implements Observable {
@@ -42,54 +39,33 @@ public final class Verbose implements Observable {

  // Run action bar verbose
  public void update() {
-    // Make sure to clean up the cached statistics
-    Sonar.get().getStatistics().cleanUpCache();
    // Don't prepare component if there are no subscribers
-    if (subscribers.isEmpty()) return;
-    // Prepare the action bar format component
-    final Component component = prepareActionBarFormat();
-    // Send the action bar to all online players
+    Component component = null;
    for (final UUID subscriber : subscribers) {
      final Audience audience = Sonar.get().audience(subscriber);
      if (audience == null) continue;
+
+      // Only prepare component if there are subscribers
+      if (component == null) {
+        final AttackTracker.AttackStatistics attackStatistics = Sonar.get().getAttackTracker().getCurrentAttack();
+        final SystemTimer attackDuration = attackStatistics == null ? null : attackStatistics.getDuration();
+        component = replaceStatistic(attackDuration != null
+          ? Sonar.get().getConfig().getVerbose().getActionBarLayoutDuringAttack()
+          : Sonar.get().getConfig().getVerbose().getActionBarLayout())
+          .replaceText(TextReplacementConfig.builder().once().matchLiteral("%attack-duration%")
+            .replacement(attackDuration == null ? "00:00" : DATE_FORMATTER.format(attackDuration.delay()))
+            .build())
+          .replaceText(TextReplacementConfig.builder().once().matchLiteral("%animation%")
+            .replacement(nextAnimation())
+            .build());
+      }
+      // Send the action bar to all online subscribers
      audience.sendActionBar(component);
    }
  }

-  public @NotNull Component prepareActionBarFormat() {
-    final SonarStatistics statistics = Sonar.get().getStatistics();
-    final AttackTracker.AttackStatistics attackStatistics = Sonar.get().getAttackTracker().getCurrentAttack();
-    final SystemTimer attackDuration = attackStatistics == null ? null : attackStatistics.getDuration();
-    return MiniMessage.miniMessage().deserialize((attackDuration != null
-      ? Sonar.get().getConfig().getVerbose().getActionBarLayoutDuringAttack()
-      : Sonar.get().getConfig().getVerbose().getActionBarLayout())
-      .replace("%queued%",
-        DECIMAL_FORMAT.format(Sonar.get().getFallback().getQueue().getQueuedPlayers().size()))
-      .replace("%verifying%", DECIMAL_FORMAT.format(Sonar.get().getFallback().getConnected().size()))
-      .replace("%blacklisted%",
-        DECIMAL_FORMAT.format(Sonar.get().getFallback().getBlacklist().estimatedSize()))
-      .replace("%blacklisted%", DECIMAL_FORMAT.format(statistics.getCurrentBlacklistSize()))
-      .replace("%total-joins%", DECIMAL_FORMAT.format(statistics.getTotalPlayersJoined()))
-      .replace("%logins-per-second%", DECIMAL_FORMAT.format(statistics.getLoginsPerSecond()))
-      .replace("%connections-per-second%", DECIMAL_FORMAT.format(statistics.getConnectionsPerSecond()))
-      .replace("%verify-total%", DECIMAL_FORMAT.format(statistics.getTotalAttemptedVerifications()))
-      .replace("%verify-success%",
-        DECIMAL_FORMAT.format(Sonar.get().getVerifiedPlayerController().estimatedSize()))
-      .replace("%verify-failed%", DECIMAL_FORMAT.format(statistics.getTotalFailedVerifications()))
-      .replace("%attack-duration%", attackDuration == null ? "00:00" : attackDuration.formattedDelay())
-      .replace("%incoming-traffic%", statistics.getCurrentIncomingBandwidthFormatted())
-      .replace("%outgoing-traffic%", statistics.getCurrentOutgoingBandwidthFormatted())
-      .replace("%incoming-traffic-ttl%", statistics.getTotalIncomingBandwidthFormatted())
-      .replace("%outgoing-traffic-ttl%", statistics.getTotalOutgoingBandwidthFormatted())
-      .replace("%used-memory%", formatMemory(getUsedMemory()))
-      .replace("%free-memory%", formatMemory(getFreeMemory()))
-      .replace("%total-memory%", formatMemory(getTotalMemory()))
-      .replace("%max-memory%", formatMemory(getMaxMemory()))
-      .replace("%animation%", nextAnimation()));
-  }
-
  public String nextAnimation() {
-    val animations = Sonar.get().getConfig().getVerbose().getAnimation();
+    final var animations = Sonar.get().getConfig().getVerbose().getAnimation();
    final int nextIndex = ++animationIndex % animations.size();
    return animations.toArray(new String[0])[nextIndex];
  }
@@ -34,14 +34,18 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.function.Supplier;

+import static java.net.HttpURLConnection.HTTP_NO_CONTENT;
+
@RequiredArgsConstructor
 public final class DiscordWebhook {
  private final String url;

-  private static final Gson GSON = new GsonBuilder().disableInnerClassSerialization().create();
-
+  private static final Gson GSON = new GsonBuilder().create();
  private static final ExecutorService HTTP_REQUEST_SERVICE = Executors.newSingleThreadExecutor();

+  /**
+   * Asynchronously posts a Discord webhook via HTTPS
+   */
  public void post(final Supplier<SonarConfiguration.Webhook.Embed> embed) {
    HTTP_REQUEST_SERVICE.execute(() -> {
      try {
@@ -51,9 +55,12 @@ public final class DiscordWebhook {
        try (final OutputStream outputStream = urlConnection.getOutputStream()) {
          outputStream.write(serializedContent.getBytes(StandardCharsets.UTF_8));
        }
-        // Check if the connection was a success
-        if (urlConnection.getResponseCode() != 204) {
-          throw new IllegalStateException("Unexpected response code " + urlConnection.getResponseCode());
+
+        // Warn the user if the connection might've not been successful
+        // I don't know why Discord doesn't respond with OK, but I guess this should be fine
+        final int code = urlConnection.getResponseCode();
+        if (code != HTTP_NO_CONTENT) {
+          Sonar.get().getLogger().warn("Unexpected Discord webhook response code {}", code);
        }
      } catch (Exception exception) {
        Sonar.get().getLogger().error("Could not send webhook: {}", exception);
@@ -61,7 +68,7 @@ public final class DiscordWebhook {
    });
  }

-  private String prepareSerializedContent(final SonarConfiguration.Webhook.@NotNull Embed embed) {
+  private static String prepareSerializedContent(final SonarConfiguration.Webhook.@NotNull Embed embed) {
    final String content = Sonar.get().getConfig().getWebhook().getContent();
    final String username = Sonar.get().getConfig().getWebhook().getUsername();
    final String avatarUrl = Sonar.get().getConfig().getWebhook().getAvatarUrl();
@@ -1,19 +1,20 @@
 import net.minecrell.pluginyml.bukkit.BukkitPluginDescription

 plugins {
-  id("net.minecrell.plugin-yml.bukkit") version "0.6.0"
+  id("net.minecrell.plugin-yml.bukkit") version "0.6.0" apply true
 }

-apply(plugin = "net.minecrell.plugin-yml.bukkit")
-
 bukkit {
  name = rootProject.name
+  description = rootProject.description
  version = rootProject.version.toString().split("-")[0]
  main = "xyz.jonesdev.sonar.bukkit.SonarBukkitPlugin"
  authors = listOf("Jones Development", "Sonar Contributors")
  website = "https://jonesdev.xyz/discord/"
  load = BukkitPluginDescription.PluginLoadOrder.POSTWORLD
-  softDepend = listOf("Geyser-Spigot", "floodgate", "Protocolize", "packetevents", "ProtocolLib", "ViaVersion")
+  softDepend = listOf("Geyser-Spigot", "floodgate", "Protocolize", "ProtocolSupport",
+    "ViaVersion", "packetevents", "ProtocolLib", "FastLogin")
+  foliaSupported = true

  commands {
    register("sonar") {
@@ -28,20 +29,23 @@ repositories {
 }

 dependencies {
-  compileOnly(project(":api"))
-  compileOnly(project(":common"))
+  implementation(project(":api"))
+  implementation(project(":common"))

-  // MiniMessage platform support
-  implementation("net.kyori:adventure-platform-bukkit:4.3.2")
+  compileOnly(rootProject.libs.spigot)

-  // We have to use 1.8 for backwards compatibility
-  compileOnly("org.spigotmc:spigot-api:1.8.8-R0.1-SNAPSHOT")
+  implementation(rootProject.libs.adventure.platform.bukkit)
+  implementation(rootProject.libs.adventure.platform.api)
+  implementation(rootProject.libs.adventure.platform.facet)
+  implementation(rootProject.libs.adventure.nbt)
+  implementation(rootProject.libs.bstats.bukkit)
+  implementation(rootProject.libs.libby.bukkit)
+}

-  // Implement bStats.org for metrics
-  implementation("org.bstats:bstats-bukkit:3.0.2")
-
-  // Library/dependency loading
-  implementation("com.alessiodp.libby:libby-bukkit:2.0.0-SNAPSHOT")
+tasks {
+  shadowJar {
+    relocate("net.kyori", "xyz.jonesdev.sonar.libs.kyori")
+  }
 }

 java.sourceCompatibility = JavaVersion.VERSION_11
@@ -25,12 +25,10 @@ import org.bstats.bukkit.Metrics;
 import org.bstats.charts.SimplePie;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.SonarPlatform;
 import xyz.jonesdev.sonar.api.logger.LoggerWrapper;
 import xyz.jonesdev.sonar.bukkit.command.BukkitSonarCommand;
 import xyz.jonesdev.sonar.common.boot.SonarBootstrap;
-import xyz.jonesdev.sonar.common.statistics.CachedBandwidthStatistics;

 import java.util.Objects;
 import java.util.UUID;
@@ -40,9 +38,8 @@ public final class SonarBukkit extends SonarBootstrap<SonarBukkitPlugin> {
  public static SonarBukkit INSTANCE;

  public SonarBukkit(final @NotNull SonarBukkitPlugin plugin) {
-    super(plugin, new BukkitLibraryManager(
-        plugin, plugin.getDataFolder().getName()),
-      plugin.getDataFolder(), SonarPlatform.BUKKIT);
+    super(plugin, SonarPlatform.BUKKIT, plugin.getDataFolder(),
+      new BukkitLibraryManager(plugin, plugin.getDataFolder().getName()));
    INSTANCE = this;
  }

@@ -52,9 +49,9 @@ public final class SonarBukkit extends SonarBootstrap<SonarBukkitPlugin> {
  private final BukkitAudiences bukkitAudiences = BukkitAudiences.create(getPlugin());

  @Override
-  public @NotNull Audience audience(final @Nullable UUID uniqueId) {
+  public @Nullable Audience audience(final @Nullable UUID uniqueId) {
    if (uniqueId == null) {
-      return bukkitAudiences.console();
+      return null;
    }
    return bukkitAudiences.player(uniqueId);
  }
@@ -98,23 +95,13 @@ public final class SonarBukkit extends SonarBootstrap<SonarBukkitPlugin> {

    // Register Sonar command
    Objects.requireNonNull(getPlugin().getCommand("sonar")).setExecutor(new BukkitSonarCommand());
-
-    // Register traffic service
-    getPlugin().getServer().getScheduler().runTaskTimerAsynchronously(getPlugin(),
-      CachedBandwidthStatistics::reset, 20L, 20L);
-
-    // Register queue service
-    getPlugin().getServer().getScheduler().runTaskTimerAsynchronously(getPlugin(),
-      getFallback().getQueue().getPollTask(), 10L, 10L);
-
-    // Register verbose service
-    getPlugin().getServer().getScheduler().runTaskTimerAsynchronously(getPlugin(),
-      Sonar.get().getVerboseHandler()::update, 4L, 4L);
  }

  @Override
  public void disable() {
-    // Make sure to properly shutdown bStats metrics
-    metrics.shutdown();
+    if (metrics != null) {
+      // Make sure to properly shutdown bStats metrics
+      metrics.shutdown();
+    }
  }
 }
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.bukkit.command;
-
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.command.InvocationSource;
-import xyz.jonesdev.sonar.bukkit.SonarBukkit;
-
-public final class BukkitInvocationSource extends InvocationSource {
-  public BukkitInvocationSource(final @NotNull CommandSender sender) {
-    super(sender instanceof Player ? ((Player) sender).getUniqueId() : null,
-      SonarBukkit.INSTANCE.getBukkitAudiences().sender(sender),
-      sender instanceof Player,
-      sender::hasPermission);
-  }
-}
@@ -21,9 +21,11 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.command.InvocationSource;
 import xyz.jonesdev.sonar.api.command.SonarCommand;
+import xyz.jonesdev.sonar.bukkit.SonarBukkit;

 import java.util.List;

@@ -37,7 +39,10 @@ public final class BukkitSonarCommand implements CommandExecutor, TabExecutor, S
                           final String label,
                           final String[] args) {
    // Create our own invocation source wrapper to handle messages properly
-    final InvocationSource invocationSource = new BukkitInvocationSource(sender);
+    final InvocationSource invocationSource = new InvocationSource(
+      sender instanceof Player ? ((Player) sender).getUniqueId() : null,
+      SonarBukkit.INSTANCE.getBukkitAudiences().sender(sender),
+      sender::hasPermission);
    // Pass the invocation source and command arguments to our command handler
    handle(invocationSource, args);
    return true; // Valid
@@ -1,32 +1,35 @@
 plugins {
-  id("net.minecrell.plugin-yml.bungee") version "0.6.0"
+  id("net.minecrell.plugin-yml.bungee") version "0.6.0" apply true
 }

-apply(plugin = "net.minecrell.plugin-yml.bungee")
-
 bungee {
  name = rootProject.name
+  description = rootProject.description
  version = rootProject.version.toString().split("-")[0]
  main = "xyz.jonesdev.sonar.bungee.SonarBungeePlugin"
  author = "Jones Development, Sonar Contributors"
-  softDepends = setOf("Geyser-BungeeCord", "floodgate", "Protocolize", "ViaVersion")
+  softDepends = setOf("Geyser-BungeeCord", "floodgate", "Protocolize", "ViaVersion", "packetevents", "FastLogin")
 }

 dependencies {
-  compileOnly(project(":api"))
-  compileOnly(project(":common"))
+  implementation(project(":api"))
+  implementation(project(":common"))

-  compileOnly("net.md_5:bungeecord-proxy:master-SNAPSHOT")
-  testCompileOnly("net.md_5:bungeecord-proxy:master-SNAPSHOT")
+  compileOnly(rootProject.libs.bungeecord)
+  testCompileOnly(rootProject.libs.bungeecord)

-  // MiniMessage platform support
-  implementation("net.kyori:adventure-platform-bungeecord:4.3.2")
+  implementation(rootProject.libs.adventure.platform.bungee)
+  implementation(rootProject.libs.adventure.platform.api)
+  implementation(rootProject.libs.adventure.platform.facet)
+  implementation(rootProject.libs.adventure.nbt)
+  implementation(rootProject.libs.bstats.bungee)
+  implementation(rootProject.libs.libby.bungee)
+}

-  // Implement bStats.org for metrics
-  implementation("org.bstats:bstats-bungeecord:3.0.2")
-
-  // Library/dependency loading
-  implementation("com.alessiodp.libby:libby-bungee:2.0.0-SNAPSHOT")
+tasks {
+  shadowJar {
+    relocate("net.kyori", "xyz.jonesdev.sonar.libs.kyori")
+  }
 }

 java.sourceCompatibility = JavaVersion.VERSION_11
@@ -25,24 +25,20 @@ import org.bstats.bungeecord.Metrics;
 import org.bstats.charts.SimplePie;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.SonarPlatform;
 import xyz.jonesdev.sonar.api.logger.LoggerWrapper;
 import xyz.jonesdev.sonar.bungee.command.BungeeSonarCommand;
 import xyz.jonesdev.sonar.bungee.fallback.FallbackInjectionHelper;
-import xyz.jonesdev.sonar.bungee.fallback.FallbackLoginListener;
 import xyz.jonesdev.sonar.common.boot.SonarBootstrap;
-import xyz.jonesdev.sonar.common.statistics.CachedBandwidthStatistics;

 import java.util.UUID;
-import java.util.concurrent.TimeUnit;

@Getter
 public final class SonarBungee extends SonarBootstrap<SonarBungeePlugin> {
  public static SonarBungee INSTANCE;

  public SonarBungee(final @NotNull SonarBungeePlugin plugin) {
-    super(plugin, new BungeeLibraryManager(plugin), plugin.getDataFolder(), SonarPlatform.BUNGEE);
+    super(plugin, SonarPlatform.BUNGEE, plugin.getDataFolder(), new BungeeLibraryManager(plugin));
    INSTANCE = this;
  }

@@ -52,9 +48,9 @@ public final class SonarBungee extends SonarBootstrap<SonarBungeePlugin> {
  private final BungeeAudiences bungeeAudiences = BungeeAudiences.create(getPlugin());

  @Override
-  public @NotNull Audience audience(final @Nullable UUID uniqueId) {
+  public @Nullable Audience audience(final @Nullable UUID uniqueId) {
    if (uniqueId == null) {
-      return bungeeAudiences.console();
+      return null;
    }
    return bungeeAudiences.player(uniqueId);
  }
@@ -99,28 +95,15 @@ public final class SonarBungee extends SonarBootstrap<SonarBungeePlugin> {
    // Register Sonar command
    getPlugin().getServer().getPluginManager().registerCommand(getPlugin(), new BungeeSonarCommand());

-    // Register Fallback listener
-    getPlugin().getServer().getPluginManager().registerListener(getPlugin(), new FallbackLoginListener());
-
-    // Register traffic service
-    getPlugin().getServer().getScheduler().schedule(getPlugin(), CachedBandwidthStatistics::reset,
-      1L, 1L, TimeUnit.SECONDS);
-
-    // Register queue service
-    getPlugin().getServer().getScheduler().schedule(getPlugin(), getFallback().getQueue().getPollTask(),
-      500L, 500L, TimeUnit.MILLISECONDS);
-
-    // Register verbose service
-    getPlugin().getServer().getScheduler().schedule(getPlugin(), Sonar.get().getVerboseHandler()::update,
-      200L, 200L, TimeUnit.MILLISECONDS);
-
    // Make sure to inject into the server's connection handler
    FallbackInjectionHelper.inject();
  }

  @Override
  public void disable() {
-    // Make sure to properly shutdown bStats metrics
-    metrics.shutdown();
+    if (metrics != null) {
+      // Make sure to properly shutdown bStats metrics
+      metrics.shutdown();
+    }
  }
 }
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.bungee.command;
-
-import net.md_5.bungee.api.CommandSender;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.command.InvocationSource;
-import xyz.jonesdev.sonar.bungee.SonarBungee;
-
-public final class BungeeInvocationSource extends InvocationSource {
-  public BungeeInvocationSource(final @NotNull CommandSender sender) {
-    super(sender instanceof ProxiedPlayer ? ((ProxiedPlayer) sender).getUniqueId() : null,
-      SonarBungee.INSTANCE.getBungeeAudiences().sender(sender),
-      sender instanceof ProxiedPlayer,
-      sender::hasPermission);
-  }
-}
@@ -18,11 +18,13 @@
 package xyz.jonesdev.sonar.bungee.command;

 import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.plugin.Command;
 import net.md_5.bungee.api.plugin.TabExecutor;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.command.InvocationSource;
 import xyz.jonesdev.sonar.api.command.SonarCommand;
+import xyz.jonesdev.sonar.bungee.SonarBungee;

 import static java.util.Collections.emptyList;

@@ -34,7 +36,10 @@ public final class BungeeSonarCommand extends Command implements TabExecutor, So
  @Override
  public void execute(final @NotNull CommandSender sender, final String[] args) {
    // Create our own invocation source wrapper to handle messages properly
-    final InvocationSource invocationSource = new BungeeInvocationSource(sender);
+    final InvocationSource invocationSource = new InvocationSource(
+      sender instanceof ProxiedPlayer ? ((ProxiedPlayer) sender).getUniqueId() : null,
+      SonarBungee.INSTANCE.getBungeeAudiences().sender(sender),
+      sender::hasPermission);
    // Pass the invocation source and command arguments to our command handler
    handle(invocationSource, args);
  }
@@ -19,7 +19,6 @@ package xyz.jonesdev.sonar.bungee.fallback;

 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
-import io.netty.handler.codec.CorruptedFrameException;
 import net.md_5.bungee.netty.ChannelWrapper;
 import net.md_5.bungee.netty.HandlerBoss;
 import net.md_5.bungee.protocol.DefinedPacket;
@@ -28,25 +27,12 @@ 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.ReflectiveOperationException;
-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.common.fallback.FallbackBandwidthHandler;
 import xyz.jonesdev.sonar.common.fallback.FallbackChannelHandlerAdapter;
-import xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper;
-import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
-import xyz.jonesdev.sonar.common.utility.geyser.GeyserUtil;

 import java.lang.reflect.Field;
 import java.net.InetSocketAddress;
-import java.nio.charset.StandardCharsets;
-import java.util.UUID;

 import static net.md_5.bungee.netty.PipelineUtils.*;
-import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_BANDWIDTH;
-import static xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper.customDisconnect;
-import static xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper.deject;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;

 public final class FallbackChannelHandler extends FallbackChannelHandlerAdapter {

@@ -68,18 +54,25 @@ public final class FallbackChannelHandler extends FallbackChannelHandlerAdapter
  @Override
  public void channelRead(final @NotNull ChannelHandlerContext ctx, final Object msg) throws Exception {
    // Intercept any packets processed by BungeeCord
-    if (msg instanceof PacketWrapper) {
+    if (listenForPackets && msg instanceof PacketWrapper) {
      final PacketWrapper packetWrapper = (PacketWrapper) msg;
      final DefinedPacket wrappedPacket = packetWrapper.packet;
      // Don't handle any invalid packets
      if (wrappedPacket != null) {
        // Intercept any handshake packet by the client
        if (wrappedPacket instanceof Handshake) {
-          handleHandshake((Handshake) wrappedPacket);
+          final Handshake handshake = (Handshake) wrappedPacket;
+          handleHandshake(handshake.getHost(), handshake.getProtocolVersion());
        }
        // Intercept any server login packet by the client
-        if (wrappedPacket instanceof LoginRequest) {
-          handleLogin(ctx, (LoginRequest) wrappedPacket, msg);
+        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 = (ChannelWrapper) CHANNEL_WRAPPER_FIELD.get(handlerBoss);
+          final InetSocketAddress socketAddress = (InetSocketAddress) channelWrapper.getRemoteAddress();
+          handleLogin(ctx, msg, loginRequest.getData(), socketAddress,
+            PACKET_ENCODER, PACKET_DECODER, TIMEOUT_HANDLER, BOSS_HANDLER);
          return;
        }
      }
@@ -87,125 +80,4 @@ public final class FallbackChannelHandler extends FallbackChannelHandlerAdapter
    // Make sure to let the server handle the rest
    ctx.fireChannelRead(msg);
  }
-
-  private void handleHandshake(final @NotNull Handshake handshake) throws Exception {
-    // Check if the player has already sent a handshake packet
-    if (protocolVersion != null) {
-      throw new CorruptedFrameException("Already sent handshake");
-    }
-    // Check if the hostname is invalid
-    if (handshake.getHost().isEmpty()) {
-      throw new CorruptedFrameException("Hostname is empty");
-    }
-    // Store the protocol version
-    protocolVersion = ProtocolVersion.fromId(handshake.getProtocolVersion());
-    // Connections from unknown protocol versions will be discarded
-    // as this is the safest way of handling unwanted connections
-    if (protocolVersion.isUnknown()) {
-      // Sonar does NOT support snapshots or unknown versions;
-      // I'll try my best to stay up-to-date!
-      throw new CorruptedFrameException("Unknown protocol");
-    }
-    // Hook the traffic listener
-    // TODO: Can we implement this in channelActive?
-    channel.pipeline().addFirst(FALLBACK_BANDWIDTH, FallbackBandwidthHandler.INSTANCE);
-  }
-
-  private void handleLogin(final @NotNull ChannelHandlerContext ctx,
-                           final @NotNull LoginRequest loginRequest,
-                           final @NotNull Object wrappedMessage) throws Exception {
-    // Check if the player has already sent a login packet
-    if (username != null) {
-      throw new CorruptedFrameException("Already logged on");
-    }
-    // Increase joins per second for the action bar verbose
-    GlobalSonarStatistics.countLogin();
-    // Store the username
-    username = loginRequest.getData();
-    // Make sure to use the potentially modified, real IP
-    final HandlerBoss handlerBoss = channel.pipeline().get(HandlerBoss.class);
-    final ChannelWrapper channelWrapper = (ChannelWrapper) CHANNEL_WRAPPER_FIELD.get(handlerBoss);
-    final InetSocketAddress socketAddress = (InetSocketAddress) channelWrapper.getRemoteAddress();
-    inetAddress = socketAddress.getAddress();
-
-    // Check the blacklist here since we cannot let the player "ghost join"
-    if (FALLBACK.getBlacklist().asMap().containsKey(inetAddress)) {
-      customDisconnect(channel, protocolVersion, blacklisted, PACKET_ENCODER, BOSS_HANDLER);
-      return;
-    }
-
-    // Don't continue the verification process if the verification is disabled
-    if (!Sonar.get().getFallback().shouldVerifyNewPlayers()) {
-      ctx.fireChannelRead(wrappedMessage);
-      deject(channel.pipeline());
-      return;
-    }
-
-    // Completely skip Geyser connections
-    if (GeyserUtil.isGeyserConnection(channel, socketAddress)) {
-      ctx.fireChannelRead(wrappedMessage);
-      deject(channel.pipeline());
-      return;
-    }
-
-    // Check if the player is already queued since we don't want bots to flood the queue
-    if (FALLBACK.getQueue().getQueuedPlayers().containsKey(inetAddress)) {
-      customDisconnect(channel, protocolVersion, alreadyQueued, PACKET_ENCODER, BOSS_HANDLER);
-      return;
-    }
-
-    // Check if Fallback is already verifying a player
-    // → is another player with the same IP address connected to Fallback?
-    if (FALLBACK.getConnected().containsKey(loginRequest.getData())
-      || FALLBACK.getConnected().containsValue(inetAddress)) {
-      customDisconnect(channel, protocolVersion, alreadyVerifying, PACKET_ENCODER, BOSS_HANDLER);
-      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, PACKET_ENCODER, BOSS_HANDLER);
-      return;
-    }
-
-    // Make sure we actually have to verify the player
-    final String offlineUUIDString = "OfflinePlayer:" + loginRequest.getData();
-    final UUID offlineUUID = UUID.nameUUIDFromBytes(offlineUUIDString.getBytes(StandardCharsets.UTF_8));
-    if (Sonar.get().getVerifiedPlayerController().has(inetAddress, offlineUUID)) {
-      ctx.fireChannelRead(wrappedMessage);
-      deject(channel.pipeline());
-      return;
-    }
-
-    // Check if the IP address is currently being rate-limited
-    if (!FALLBACK.getRatelimiter().attempt(inetAddress)) {
-      customDisconnect(channel, protocolVersion, reconnectedTooFast, PACKET_ENCODER, BOSS_HANDLER);
-      return;
-    }
-
-    // Check if the protocol ID of the player is allowed to bypass verification
-    if (Sonar.get().getConfig().getVerification().getWhitelistedProtocols()
-      .contains(protocolVersion.getProtocol())) {
-      ctx.fireChannelRead(wrappedMessage);
-      deject(channel.pipeline());
-      return;
-    }
-
-    // Queue the connection for further processing
-    FALLBACK.getQueue().queue(inetAddress, () -> channel.eventLoop().execute(() -> {
-      // 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(loginRequest.getData()).matches()) {
-        customDisconnect(channel, protocolVersion, invalidUsername, PACKET_ENCODER, BOSS_HANDLER);
-        return;
-      }
-
-      // Create an instance for the Fallback connection
-      final FallbackUser user = new FallbackUserWrapper(channel, inetAddress, protocolVersion);
-      // Let the verification handler take over the channel
-      user.hijack(loginRequest.getData(), offlineUUID, PACKET_ENCODER, PACKET_DECODER, TIMEOUT_HANDLER, BOSS_HANDLER);
-    }));
-  }
 }
@@ -22,19 +22,21 @@ import io.netty.channel.ChannelInitializer;
 import lombok.RequiredArgsConstructor;
 import xyz.jonesdev.sonar.api.ReflectiveOperationException;

-import java.lang.reflect.Method;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;

 import static net.md_5.bungee.netty.PipelineUtils.PACKET_DECODER;
 import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_HANDLER;

@RequiredArgsConstructor
 public final class FallbackChannelInitializer extends ChannelInitializer<Channel> {
-  private static final Method INIT_CHANNEL_METHOD;
+  private static final MethodHandle INIT_CHANNEL_METHOD;

  static {
    try {
-      INIT_CHANNEL_METHOD = ChannelInitializer.class.getDeclaredMethod("initChannel", Channel.class);
-      INIT_CHANNEL_METHOD.setAccessible(true);
+      INIT_CHANNEL_METHOD = MethodHandles.privateLookupIn(ChannelInitializer.class, MethodHandles.lookup())
+        .findVirtual(ChannelInitializer.class, "initChannel", MethodType.methodType(void.class, Channel.class));
    } catch (Throwable throwable) {
      throw new ReflectiveOperationException(throwable);
    }
@@ -46,7 +48,7 @@ public final class FallbackChannelInitializer extends ChannelInitializer<Channel
  protected void initChannel(final Channel channel) throws Exception {
    // Invoke the original method
    try {
-      INIT_CHANNEL_METHOD.invoke(originalChannelInitializer, channel);
+      INIT_CHANNEL_METHOD.invokeExact(originalChannelInitializer, channel);
    } catch (Throwable throwable) {
      throw new ReflectiveOperationException(throwable);
    }
@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.bungee.fallback;
-
-import lombok.RequiredArgsConstructor;
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
-import net.md_5.bungee.api.connection.PendingConnection;
-import net.md_5.bungee.api.event.PreLoginEvent;
-import net.md_5.bungee.api.plugin.Listener;
-import net.md_5.bungee.chat.ComponentSerializer;
-import net.md_5.bungee.connection.InitialHandler;
-import net.md_5.bungee.event.EventHandler;
-import net.md_5.bungee.event.EventPriority;
-import net.md_5.bungee.netty.ChannelWrapper;
-import net.md_5.bungee.protocol.packet.Kick;
-import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.ReflectiveOperationException;
-import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
-import xyz.jonesdev.sonar.bungee.SonarBungee;
-
-import java.lang.reflect.Field;
-import java.net.InetAddress;
-import java.util.Objects;
-
-import static xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper.closeWith;
-
-@RequiredArgsConstructor
-public final class FallbackLoginListener implements Listener {
-
-  private static final Field CHANNEL_FIELD;
-
-  static {
-    try {
-      CHANNEL_FIELD = InitialHandler.class.getDeclaredField("ch");
-      CHANNEL_FIELD.setAccessible(true);
-    } catch (NoSuchFieldException exception) {
-      throw new ReflectiveOperationException(exception);
-    }
-  }
-
-  @SuppressWarnings("deprecation")
-  @EventHandler(priority = EventPriority.LOWEST)
-  public void handle(final @NotNull PreLoginEvent event) throws IllegalAccessException {
-    // Check if the number of online players using the same IP address as
-    // the connecting player is greater than the configured amount
-    final int maxOnlinePerIp = Sonar.get().getConfig().getMaxOnlinePerIp();
-    // Don't do anything if the setting is disabled
-    if (maxOnlinePerIp <= 0) return;
-
-    final InetAddress inetAddress = event.getConnection().getAddress().getAddress();
-
-    final long onlinePerIp = SonarBungee.INSTANCE.getPlugin().getServer().getPlayers().stream()
-      .filter(player -> Objects.equals(player.getAddress().getAddress(), inetAddress))
-      .count()
-      + 1 /* add 1 because the player hasn't been added to the list of online players yet */;
-
-    // We use '>=' because the player connecting to the server hasn't joined yet
-    if (onlinePerIp >= maxOnlinePerIp) {
-      final Component component = Sonar.get().getConfig().getTooManyOnlinePerIp();
-      final String serialized = GsonComponentSerializer.gson().serialize(component);
-      final PendingConnection connection = event.getConnection();
-      closeWith(((ChannelWrapper) CHANNEL_FIELD.get(connection)).getHandle(),
-        ProtocolVersion.fromId(connection.getVersion()),
-        new Kick(ComponentSerializer.deserialize(serialized)));
-    }
-  }
-}
@@ -1,5 +1,9 @@
 dependencies {
  compileOnly(project(":api"))
+
+  compileOnly(rootProject.libs.adventure.nbt)
+
+  implementation(rootProject.libs.capja)
 }

 java.sourceCompatibility = JavaVersion.VERSION_11
@@ -21,10 +21,11 @@ import com.alessiodp.libby.Library;
 import com.alessiodp.libby.LibraryManager;
 import lombok.experimental.UtilityClass;
 import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.SonarPlatform;

@UtilityClass
 class LibraryLoader {
-  void loadLibraries(final @NotNull LibraryManager libraryManager) {
+  void loadLibraries(final @NotNull LibraryManager libraryManager, final @NotNull SonarPlatform platform) {
    libraryManager.addMavenCentral();
    libraryManager.addJitPack();
    libraryManager.loadLibraries(
@@ -71,5 +72,23 @@ class LibraryLoader {
        .relocate("org{}mariadb", "xyz{}jonesdev{}sonar{}libs{}mariadb")
        .build()
    );
+
+    // Only load adventure if not on Velocity
+    if (platform != SonarPlatform.VELOCITY) {
+      libraryManager.loadLibraries(
+        Library.builder()
+          .groupId("net{}kyori")
+          .artifactId("adventure-text-minimessage")
+          .version("4.17.0")
+          .relocate("net{}kyori", "xyz{}jonesdev{}sonar{}libs{}kyori")
+          .build(),
+        Library.builder()
+          .groupId("net{}kyori")
+          .artifactId("adventure-text-serializer-gson")
+          .version("4.17.0")
+          .relocate("net{}kyori", "xyz{}jonesdev{}sonar{}libs{}kyori")
+          .build()
+      );
+    }
  }
 }
@@ -19,6 +19,7 @@ package xyz.jonesdev.sonar.common.boot;

 import com.alessiodp.libby.LibraryManager;
 import com.github.benmanes.caffeine.cache.Caffeine;
+import com.github.benmanes.caffeine.cache.Ticker;
 import com.j256.ormlite.logger.Level;
 import com.j256.ormlite.logger.Logger;
 import lombok.Getter;
@@ -36,6 +37,7 @@ import xyz.jonesdev.sonar.api.timer.SystemTimer;
 import xyz.jonesdev.sonar.api.verbose.Notification;
 import xyz.jonesdev.sonar.api.verbose.Verbose;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer;
+import xyz.jonesdev.sonar.common.service.SonarServiceThreadManager;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
 import xyz.jonesdev.sonar.common.subcommand.SubcommandRegistryHolder;
 import xyz.jonesdev.sonar.common.update.UpdateChecker;
@@ -53,27 +55,23 @@ public abstract class SonarBootstrap<T> implements Sonar {
  private Notification notificationHandler;
  private SonarConfiguration config;
  private VerifiedPlayerController verifiedPlayerController;
-  private File dataDirectory;
-  private final LibraryManager libraryManager;
  private final SonarStatistics statistics;
  private final SonarPlatform platform;
  private final SubcommandRegistry subcommandRegistry;
  private final SystemTimer launchTimer = new SystemTimer();

  public SonarBootstrap(final @NotNull T plugin,
-                        final LibraryManager libraryManager,
-                        final File dataDirectory,
-                        final SonarPlatform platform) {
+                        final @NotNull SonarPlatform platform,
+                        final @NotNull File dataDirectory,
+                        final @NotNull LibraryManager libraryManager) {
+    // Load all libraries before anything else
+    LibraryLoader.loadLibraries(libraryManager, platform);
    // Set the Sonar API
    SonarSupplier.set(this);
-    // Store our library manager for the API
-    this.libraryManager = libraryManager;
-    // Load all libraries before anything else
-    LibraryLoader.loadLibraries(libraryManager);
    // Set the plugin instance
    this.plugin = plugin;
-    this.dataDirectory = dataDirectory;
    this.platform = platform;
+    // Load the rest of the components
    this.statistics = new GlobalSonarStatistics();
    this.verboseHandler = new Verbose();
    this.notificationHandler = new Notification();
@@ -104,6 +102,10 @@ public abstract class SonarBootstrap<T> implements Sonar {
      // Run the per-platform initialization method
      enable();

+      // Start threads
+      getLogger().info("Starting all managed threads...");
+      SonarServiceThreadManager.start();
+
      // Done
      getLogger().info("Done ({}s)!", launchTimer);
    } catch (Throwable throwable) {
@@ -130,11 +132,17 @@ public abstract class SonarBootstrap<T> implements Sonar {
    }

    // Prepare cached packets
+    getLogger().info("Taking cached snapshots of all packets...");
    FallbackPreparer.prepare();

-    // Update ratelimiter cache
-    getFallback().getRatelimiter().setExpiringCache(Caffeine.newBuilder()
+    // Update ratelimiter caches
+    getFallback().getRatelimiter().setAttemptCache(Caffeine.newBuilder()
      .expireAfterWrite(Duration.ofMillis(getConfig().getVerification().getReconnectDelay()))
+      .ticker(Ticker.systemTicker())
+      .build());
+    getFallback().getRatelimiter().setFailCountCache(Caffeine.newBuilder()
+      .expireAfterWrite(Duration.ofMillis(getConfig().getVerification().getRememberTime()))
+      .ticker(Ticker.systemTicker())
      .build());

    // Update blacklist cache
@@ -143,9 +151,10 @@ public abstract class SonarBootstrap<T> implements Sonar {
    // Make sure the blacklist is only set when we need it to prevent data loss
    if (!blacklistExists // Make sure we create a new cache if it doesn't exist yet
      || getFallback().getBlacklistTime() != blacklistTime) {
-      // Create new cache with the configured blacklist time
+      // Create a new cache with the configured blacklist time
      getFallback().setBlacklist(Caffeine.newBuilder()
        .expireAfterWrite(Duration.ofMillis(getConfig().getVerification().getBlacklistTime()))
+        .ticker(Ticker.systemTicker())
        .build());
      // Store the new blacklist time, so we don't have to reset the blacklist every reload
      getFallback().setBlacklistTime(blacklistTime);
@@ -166,8 +175,12 @@ public abstract class SonarBootstrap<T> implements Sonar {
  public final void shutdown() {
    // Initialize shutdown process
    getLogger().info("Starting shutdown process...");
-    // Close database connection
-    verifiedPlayerController.close();
+    // Interrupt threads
+    SonarServiceThreadManager.stop();
+    // Close database connection if present
+    if (verifiedPlayerController != null) {
+      verifiedPlayerController.close();
+    }
    // Run the per-platform disable method
    disable();
    // Thank the user for using Sonar
@@ -39,7 +39,7 @@ public final class FallbackBandwidthHandler extends ChannelDuplexHandler {
                          final @NotNull Object msg) throws Exception {
    // We can only get the size of a message if it's a ByteBuf
    if (msg instanceof ByteBuf) {
-      // Increment the incoming traffic by the amount of readable bytes
+      // Increment the incoming traffic by the number of readable bytes
      INCOMING.increment(((ByteBuf) msg).readableBytes());
    }
    // Make sure to let the server handle the rest
@@ -52,7 +52,7 @@ public final class FallbackBandwidthHandler extends ChannelDuplexHandler {
                    final ChannelPromise promise) throws Exception {
    // We can only get the size of a message if it's a ByteBuf
    if (msg instanceof ByteBuf) {
-      // Increment the outgoing traffic by the amount of readable bytes
+      // Increment the outgoing traffic by the number of readable bytes
      OUTGOING.increment(((ByteBuf) msg).readableBytes());
    }
    // Make sure to let the server handle the rest
@@ -20,15 +20,25 @@ package xyz.jonesdev.sonar.common.fallback;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.handler.codec.CorruptedFrameException;
 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.Fallback;
+import xyz.jonesdev.sonar.api.fallback.FallbackUser;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
+import xyz.jonesdev.sonar.common.util.GeyserDetection;

 import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.UUID;
+
+import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_BANDWIDTH;
+import static xyz.jonesdev.sonar.common.fallback.FallbackUserWrapper.customDisconnect;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;

@RequiredArgsConstructor
 public class FallbackChannelHandlerAdapter extends ChannelInboundHandlerAdapter {
@@ -36,28 +46,38 @@ public class FallbackChannelHandlerAdapter extends ChannelInboundHandlerAdapter
  protected @Nullable String username;
  protected InetAddress inetAddress;
  protected ProtocolVersion protocolVersion;
+  protected boolean listenForPackets = true;

  protected static final Fallback FALLBACK = Sonar.get().getFallback();

  @Override
-  public final void channelActive(final @NotNull ChannelHandlerContext ctx) {
+  public final void channelActive(final @NotNull ChannelHandlerContext ctx) throws Exception {
    // Increase connections per second for the action bar verbose
    GlobalSonarStatistics.countConnection();
+    // Hook the traffic listener
+    channel.pipeline().addFirst(FALLBACK_BANDWIDTH, FallbackBandwidthHandler.INSTANCE);
    // Make sure to let the server handle the rest
    ctx.fireChannelActive();
  }

  @Override
-  public final void channelInactive(final @NotNull ChannelHandlerContext ctx) {
+  public final void channelInactive(final @NotNull ChannelHandlerContext ctx) throws Exception {
    // The player can disconnect without sending the login packet first
-    if (username != null) {
-      // Remove the username from the connected players
-      FALLBACK.getConnected().remove(username);
-    }
-    // The player cannot be in the queue if the IP address is invalid
+    // Account for this by checking if the inetAddress has been set yet
    if (inetAddress != null) {
+      // Remove the IP address from the connected players
+      FALLBACK.getConnected().remove(inetAddress);
      // Remove the IP address from the queue
-      FALLBACK.getQueue().remove(inetAddress);
+      FALLBACK.getQueue().getQueuedPlayers().remove(inetAddress);
+      // Remove this account from the online players
+      // or decrement the number of accounts with the same IP
+      FALLBACK.getOnline().compute(inetAddress, (key, value) -> {
+        if (value == null || value <= 1) {
+          return null;
+        } else {
+          return value - 1;
+        }
+      });
    }
    // Make sure to let the server handle the rest
    ctx.fireChannelInactive();
@@ -69,7 +89,166 @@ public class FallbackChannelHandlerAdapter extends ChannelInboundHandlerAdapter
  @Override
  public final void exceptionCaught(final @NotNull ChannelHandlerContext ctx,
                                    final @NotNull Throwable cause) throws Exception {
-    // Simply close the channel if we encounter any errors.
+    // Close the channel if we encounter any errors.
    ctx.close();
  }
+
+  /**
+   * 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 String hostname, final int protocol) throws Exception {
+    // Check if the hostname is invalid
+    if (hostname.isEmpty()) {
+      throw new CorruptedFrameException("Hostname is empty");
+    }
+    // Check if the player has already sent a handshake packet
+    if (protocolVersion != null) {
+      throw new CorruptedFrameException("Already sent handshake");
+    }
+    // Store the protocol version
+    protocolVersion = ProtocolVersion.fromId(protocol);
+  }
+
+  /**
+   * Validates and handles incoming login packets
+   *
+   * @param ctx           Forwarded channel handler context
+   * @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 ChannelHandlerContext ctx,
+                                   final @NotNull Object loginPacket,
+                                   final @NotNull String username,
+                                   final @NotNull InetSocketAddress socketAddress,
+                                   final @NotNull String encoder,
+                                   final @NotNull String decoder,
+                                   final @NotNull String timeout,
+                                   final @NotNull String handler) throws Exception {
+    // Check if the player has already sent a login packet
+    if (this.username != null) {
+      throw new CorruptedFrameException("Already sent login");
+    }
+    // Connections from unknown protocol versions will be discarded
+    // as this is the safest way of handling unwanted connections
+    if (protocolVersion.isUnknown()) {
+      // Sonar does not support snapshots or Minecraft versions older than 1.7.2
+      throw new CorruptedFrameException("Unknown protocol version");
+    }
+    // Increase joins per second for the action bar verbose
+    GlobalSonarStatistics.countLogin();
+    // Store the username and IP address
+    this.username = username;
+    this.inetAddress = socketAddress.getAddress();
+
+    // Check the blacklist here since we cannot let the player "ghost join"
+    if (FALLBACK.getBlacklist().asMap().containsKey(inetAddress)) {
+      customDisconnect(channel, protocolVersion, blacklisted, encoder, handler);
+      return;
+    }
+
+    // Don't continue the verification process if the verification is disabled
+    if (!Sonar.get().getFallback().shouldVerifyNewPlayers()) {
+      initialLogin(ctx, loginPacket, encoder, handler);
+      return;
+    }
+
+    // Completely skip Geyser connections if configured
+    final boolean geyser = GeyserDetection.isGeyserConnection(channel, socketAddress);
+    if (geyser && !Sonar.get().getConfig().getVerification().isCheckGeyser()) {
+      initialLogin(ctx, loginPacket, encoder, handler);
+      return;
+    }
+
+    // Check if the player is already queued since we don't want bots to flood the queue
+    if (FALLBACK.getQueue().getQueuedPlayers().containsKey(inetAddress)) {
+      customDisconnect(channel, protocolVersion, alreadyQueued, encoder, handler);
+      return;
+    }
+
+    // Check if Fallback is already verifying a player with the same IP address
+    if (FALLBACK.getConnected().containsKey(inetAddress)) {
+      customDisconnect(channel, protocolVersion, alreadyVerifying, encoder, handler);
+      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, encoder, handler);
+      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(inetAddress, offlineUUID)) {
+      initialLogin(ctx, loginPacket, encoder, handler);
+      return;
+    }
+
+    // Check if the IP address is currently being rate-limited
+    if (!FALLBACK.getRatelimiter().attempt(inetAddress)) {
+      customDisconnect(channel, protocolVersion, reconnectedTooFast, encoder, handler);
+      return;
+    }
+
+    // Check if the protocol ID of the player is allowed to bypass verification
+    if (Sonar.get().getConfig().getVerification().getWhitelistedProtocols()
+      .contains(protocolVersion.getProtocol())) {
+      initialLogin(ctx, loginPacket, encoder, handler);
+      return;
+    }
+
+    // Queue the connection for further processing
+    FALLBACK.getQueue().getQueuedPlayers().put(inetAddress, () -> {
+      // 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, encoder, handler);
+        return;
+      }
+
+      // Create an instance for the Fallback connection
+      final FallbackUser user = new FallbackUserWrapper(channel, inetAddress, protocolVersion, geyser);
+      // Let the verification handler take over the channel
+      user.hijack(username, offlineUUID, encoder, decoder, timeout, handler);
+    });
+  }
+
+  /**
+   * Executes the maximum accounts per IP limit check before letting the player join
+   *
+   * @param ctx         Forwarded channel handler context
+   * @param loginPacket Login packet sent by the client
+   */
+  protected final void initialLogin(final @NotNull ChannelHandlerContext ctx,
+                                    final @NotNull Object loginPacket,
+                                    final @NotNull String encoder,
+                                    final @NotNull String handler) throws Exception {
+    // Increment the number of accounts with the same IP
+    FALLBACK.getOnline().compute(inetAddress, (key, value) -> value == null ? 1 : value + 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 = FALLBACK.getOnline().getOrDefault(inetAddress, 0);
+      if (onlinePerIp > maxOnlinePerIp) {
+        customDisconnect(channel, protocolVersion, tooManyOnlinePerIP, encoder, handler);
+        return;
+      }
+    }
+
+    // Don't listen for further packets
+    // TODO: deject the pipeline without breaking disconnect logic
+    listenForPackets = false;
+    // Let the server know about the login packet
+    ctx.fireChannelRead(loginPacket);
+  }
 }
@@ -26,8 +26,6 @@ import org.jetbrains.annotations.NotNull;
 import java.util.concurrent.TimeUnit;

 public final class FallbackTimeoutHandler extends IdleStateHandler {
-  private boolean knownDisconnect;
-
  public FallbackTimeoutHandler(final long timeout, final TimeUnit timeUnit) {
    super(timeout, 0L, 0L, timeUnit);
  }
@@ -35,21 +33,16 @@ public final class FallbackTimeoutHandler extends IdleStateHandler {
  @Override
  protected void channelIdle(final ChannelHandlerContext ctx,
                             final @NotNull IdleStateEvent idleStateEvent) throws Exception {
-    assert idleStateEvent.state() == IdleState.READER_IDLE;
-    readTimedOut(ctx);
-  }
+    // We are only checking the read timeout state - skip all other states
+    if (idleStateEvent.state() != IdleState.READER_IDLE) {
+      return;
+    }

-  private void readTimedOut(final ChannelHandlerContext ctx) {
-    if (!knownDisconnect) {
-
-      // 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
-      if (ctx.channel().isActive()) {
-        ctx.close();
-      }
-
-      knownDisconnect = true;
+    // 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
+    if (ctx.channel().isActive()) {
+      ctx.close();
    }
  }
 }
@@ -21,30 +21,36 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelPipeline;
+import io.netty.handler.codec.CorruptedFrameException;
 import lombok.Getter;
+import lombok.Setter;
 import lombok.ToString;
 import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.event.impl.UserBlacklistedEvent;
 import xyz.jonesdev.sonar.api.event.impl.UserVerifyFailedEvent;
 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.protocol.FallbackPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketDecoder;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketEncoder;
-import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginSuccessPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.DisconnectPacket;
+import xyz.jonesdev.sonar.common.fallback.session.FallbackLoginSessionHandler;
 import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;

 import java.net.InetAddress;
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;

-import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.*;
+import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_PACKET_DECODER;
+import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_PACKET_ENCODER;
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_20_2;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.CONFIG;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketRegistry.GAME;

@Getter
@ToString(of = {"protocolVersion", "inetAddress"})
@@ -53,44 +59,40 @@ public final class FallbackUserWrapper implements FallbackUser {
  private final ChannelPipeline pipeline;
  private final InetAddress inetAddress;
  private final ProtocolVersion protocolVersion;
+  @Setter
+  private boolean receivedClientSettings;
+  @Setter
+  private boolean receivedPluginMessage;
+  private final boolean geyser;
+  private final SystemTimer loginTimer = new SystemTimer();

  public FallbackUserWrapper(final @NotNull Channel channel,
                             final @NotNull InetAddress inetAddress,
-                             final @NotNull ProtocolVersion protocolVersion) {
+                             final @NotNull ProtocolVersion protocolVersion,
+                             final boolean geyser) {
    this.channel = channel;
    this.pipeline = channel.pipeline();
    this.inetAddress = inetAddress;
    this.protocolVersion = protocolVersion;
+    this.geyser = geyser;
  }

  @Override
-  public void disconnect(final @NotNull Component reason) {
-    closeWith(channel, protocolVersion, DisconnectPacket.create(reason, false));
+  public void disconnect(final @NotNull Component reason, final boolean duringLogin) {
+    closeWith(channel, protocolVersion, DisconnectPacket.create(reason, duringLogin));
  }

  @Override
  public void hijack(final @NotNull String username, final @NotNull UUID uuid,
                     final @NotNull String encoder, final @NotNull String decoder,
-                     final @NotNull String timeout, final @NotNull String boss) {
-    // This rarely happens when the channel hangs, but the player is still connecting
-    // This also fixes a unique issue with TCPShield and other reverse proxies
-    if (pipeline.get(encoder) == null || pipeline.get(decoder) == null) {
-      channel.close();
-      return;
-    }
-
-    // Remove main pipeline to completely take over the channel
-    if (pipeline.get(boss) != null) {
-      pipeline.remove(boss);
-    }
-
+                     final @NotNull String timeout, final @NotNull String handler) {
    // The player has joined the verification
    GlobalSonarStatistics.totalAttemptedVerifications++;

    if (Sonar.get().getConfig().getVerification().isLogConnections()) {
      // Only log the processing message if the server isn't under attack.
      // We let the user override this through the configuration.
-      if (!Sonar.get().getAttackTracker().isCurrentlyUnderAttack()
+      if (Sonar.get().getAttackTracker().getCurrentAttack() == null
        || Sonar.get().getConfig().getVerification().isLogDuringAttack()) {
        Sonar.get().getFallback().getLogger().info(Sonar.get().getConfig().getVerification().getConnectLog()
          .replace("%name%", username)
@@ -103,7 +105,7 @@ public final class FallbackUserWrapper implements FallbackUser {
    Sonar.get().getEventManager().publish(new UserVerifyJoinEvent(username, this));

    // Mark the player as connected → verifying players
-    Sonar.get().getFallback().getConnected().put(username, inetAddress);
+    Sonar.get().getFallback().getConnected().put(inetAddress, (byte) 0);

    // Add better timeout handler to avoid known exploits or issues
    // We also want to timeout bots quickly to avoid flooding
@@ -114,72 +116,90 @@ public final class FallbackUserWrapper implements FallbackUser {
    final FallbackPacketEncoder newEncoder = new FallbackPacketEncoder(protocolVersion);
    pipeline.replace(encoder, FALLBACK_PACKET_ENCODER, newEncoder);

-    // Send LoginSuccess packet to make the client think they are joining the server
-    write(new LoginSuccessPacket(username, uuid));
+    channel.eventLoop().execute(() -> {
+      // Remove the main pipeline to completely take over the channel
+      if (pipeline.get(handler) != null) {
+        pipeline.remove(handler);
+      }

-    // The LoginSuccess packet has been sent, now we can change the registry state
-    newEncoder.updateRegistry(protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_20_2) >= 0
-      ? FallbackPacketRegistry.CONFIG : FallbackPacketRegistry.GAME);
+      // Send LoginSuccess packet to make the client think they are joining the server
+      write(FallbackPreparer.LOGIN_SUCCESS);

-    // Replace normal decoder to allow custom packets
-    pipeline.replace(decoder, FALLBACK_PACKET_DECODER,
-      new FallbackPacketDecoder(this, new FallbackVerificationHandler(this, username, uuid)));
+      // The LoginSuccess packet has been sent, now we can change the registry state
+      newEncoder.updateRegistry(protocolVersion.compareTo(MINECRAFT_1_20_2) >= 0 ? CONFIG : GAME);
+
+      try {
+        // Replace normal decoder to allow custom packets
+        final FallbackPacketDecoder fallbackPacketDecoder = new FallbackPacketDecoder(protocolVersion);
+        pipeline.replace(decoder, FALLBACK_PACKET_DECODER, fallbackPacketDecoder);
+        // Listen for all incoming packets by setting the packet listener
+        fallbackPacketDecoder.setListener(new FallbackLoginSessionHandler(this, username, uuid));
+      } catch (Throwable throwable) {
+        // This rarely happens when the channel hangs and the player is still connecting
+        // I honestly have no idea how else I'm supposed to fix this
+        channel.close();
+      }
+    });
  }

  @Override
-  public void fail(final @Nullable String reason) {
-    if (channel.isActive()) {
-      disconnect(Sonar.get().getConfig().getVerification().getVerificationFailed());
+  public void fail(final @NotNull String reason) {
+    disconnect(Sonar.get().getConfig().getVerification().getVerificationFailed(), false);

-      if (reason != null) {
-        // Only log the failed message if the server isn't under attack.
-        // We let the user override this through the configuration.
-        if (!Sonar.get().getAttackTracker().isCurrentlyUnderAttack()
-          || Sonar.get().getConfig().getVerification().isLogDuringAttack()) {
-          Sonar.get().getFallback().getLogger().info(Sonar.get().getConfig().getVerification().getFailedLog()
-            .replace("%ip%", Sonar.get().getConfig().formatAddress(getInetAddress()))
-            .replace("%protocol%", String.valueOf(getProtocolVersion().getProtocol()))
-            .replace("%reason%", reason));
-        }
-      }
+    // Only log the failed message if the server isn't currently under attack.
+    // However, we let the user override this through the configuration.
+    final boolean shouldLog = Sonar.get().getAttackTracker().getCurrentAttack() == null
+      || Sonar.get().getConfig().getVerification().isLogDuringAttack();
+
+    if (shouldLog) {
+      Sonar.get().getFallback().getLogger().info(Sonar.get().getConfig().getVerification().getFailedLog()
+        .replace("%ip%", Sonar.get().getConfig().formatAddress(getInetAddress()))
+        .replace("%protocol%", String.valueOf(getProtocolVersion().getProtocol()))
+        .replace("%reason%", reason));
    }

-    // Increment amount of total failed verifications
+    // Increment number of total failed verifications
    GlobalSonarStatistics.totalFailedVerifications++;

    // Call the VerifyFailedEvent for external API usage
    Sonar.get().getEventManager().publish(new UserVerifyFailedEvent(this, reason));

-    // Use a label, so we can easily add more code beneath this method
+    // Use a label, so we can easily add more code beneath this method in the future
    blacklist: {
      // Check if the player has too many failed attempts
      final int blacklistThreshold = Sonar.get().getConfig().getVerification().getBlacklistThreshold();
      // The user is allowed to disable the blacklist entirely by setting the threshold to 0
      if (blacklistThreshold <= 0) break blacklist;

-      // Add 1 to the amount of fails since we haven't updated the cached entries yet (for performance)
-      final int failCount = getFailedCount() + 1;
+      // Use 1 as the default amount of fails since we haven't cached anything yet
+      final int fails = Sonar.get().getFallback().getRatelimiter().getFailCountCache().get(inetAddress, ignored -> 1);
      // Now we simply need to check if the threshold is reached
-      if (failCount >= blacklistThreshold) {
-        // Call the BotBlacklistedEvent for external API usage
-        Sonar.get().getEventManager().publish(new UserBlacklistedEvent(this));
-
-        // Increment amount of total blacklisted players
-        GlobalSonarStatistics.totalBlacklistedPlayers++;
-
-        Sonar.get().getFallback().getBlacklist().put(getInetAddress(), (byte) 0);
-        Sonar.get().getFallback().getLogger().info(Sonar.get().getConfig().getVerification().getBlacklistLog()
-          .replace("%ip%", Sonar.get().getConfig().formatAddress(getInetAddress()))
-          .replace("%protocol%", String.valueOf(getProtocolVersion().getProtocol())));
-
-        // Invalidate the cached entry to ensure memory safety
-        invalidateFails();
+      if (fails < blacklistThreshold) {
+        // Make sure we increment the number of fails
+        Sonar.get().getFallback().getRatelimiter().incrementFails(inetAddress, fails);
        break blacklist;
      }

-      // Make sure we increment the number of fails
-      incrementFails();
+      // Call the BotBlacklistedEvent for external API usage
+      Sonar.get().getEventManager().publish(new UserBlacklistedEvent(this));
+
+      // Increment number of total blacklisted players
+      GlobalSonarStatistics.totalBlacklistedPlayers++;
+
+      Sonar.get().getFallback().getBlacklist().put(getInetAddress(), (byte) 0);
+
+      if (shouldLog) {
+        Sonar.get().getFallback().getLogger().info(Sonar.get().getConfig().getVerification().getBlacklistLog()
+          .replace("%ip%", Sonar.get().getConfig().formatAddress(getInetAddress()))
+          .replace("%protocol%", String.valueOf(getProtocolVersion().getProtocol())));
+      }
+
+      // Invalidate the cached entry to ensure memory safety
+      Sonar.get().getFallback().getRatelimiter().getFailCountCache().invalidate(inetAddress);
    }
+
+    // Throw an exception to avoid further code execution
+    throw new CorruptedFrameException();
  }

  /**
@@ -211,7 +231,7 @@ public final class FallbackUserWrapper implements FallbackUser {
   *
   * @param packet          Disconnect packet
   * @param encoder         Encoder to replace
-   * @param boss            Main pipeline to remove
+   * @param handler         Main pipeline to remove
   * @param channel         Channel of the player
   * @param protocolVersion Protocol version of the player
   */
@@ -219,13 +239,25 @@ public final class FallbackUserWrapper implements FallbackUser {
                                      final @NotNull ProtocolVersion protocolVersion,
                                      final @NotNull FallbackPacket packet,
                                      final @NotNull String encoder,
-                                      final @NotNull String boss) {
-    // Remove main pipeline to completely take over the channel
+                                      final @NotNull String handler) {
+    if (channel.eventLoop().inEventLoop()) {
+      _customDisconnect(channel, protocolVersion, packet, encoder, handler);
+    } else {
+      channel.eventLoop().execute(() -> _customDisconnect(channel, protocolVersion, packet, encoder, handler));
+    }
+  }
+
+  private static void _customDisconnect(final @NotNull Channel channel,
+                                        final @NotNull ProtocolVersion protocolVersion,
+                                        final @NotNull FallbackPacket packet,
+                                        final @NotNull String encoder,
+                                        final @NotNull String boss) {
+    // Remove the main pipeline to completely take over the channel
    if (channel.pipeline().get(boss) != null) {
      channel.pipeline().remove(boss);
    }
    final ChannelHandler currentEncoder = channel.pipeline().get(encoder);
-    // Simply close the channel if no decoder exists
+    // Close the channel if no decoder exists
    if (currentEncoder != null) {
      // We don't need to update the encoder if it's already present
      if (!(currentEncoder instanceof FallbackPacketEncoder)) {
@@ -237,17 +269,4 @@ public final class FallbackUserWrapper implements FallbackUser {
      channel.close();
    }
  }
-
-  /**
-   * Removes Sonar's pipelines from a channel to save
-   * unnecessary RAM and CPU usage
-   *
-   * @param pipeline Pipeline object of the channel
-   */
-  public static void deject(final @NotNull ChannelPipeline pipeline) {
-    // Remove Sonar's pipelines if they exist
-    if (pipeline.get(FALLBACK_HANDLER) != null) {
-      pipeline.remove(FALLBACK_HANDLER);
-    }
-  }
 }
@@ -1,667 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.buffer.ByteBuf;
-import io.netty.handler.codec.CorruptedFrameException;
-import io.netty.handler.codec.DecoderException;
-import lombok.val;
-import net.kyori.adventure.text.minimessage.MiniMessage;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.event.impl.UserVerifySuccessEvent;
-import xyz.jonesdev.sonar.api.fallback.Fallback;
-import xyz.jonesdev.sonar.api.fallback.FallbackUser;
-import xyz.jonesdev.sonar.api.model.VerifiedPlayer;
-import xyz.jonesdev.sonar.api.timer.SystemTimer;
-import xyz.jonesdev.sonar.common.fallback.protocol.*;
-import xyz.jonesdev.sonar.common.fallback.protocol.map.ItemMapType;
-import xyz.jonesdev.sonar.common.fallback.protocol.map.MapInfoPreparer;
-import xyz.jonesdev.sonar.common.fallback.protocol.map.PreparedMapInfo;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.config.FinishConfigurationPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginAcknowledgedPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;
-import xyz.jonesdev.sonar.common.statistics.GlobalSonarStatistics;
-import xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil;
-
-import java.util.Objects;
-import java.util.Random;
-import java.util.UUID;
-import java.util.regex.Pattern;
-
-import static xyz.jonesdev.sonar.api.config.SonarConfiguration.Verification.Gravity.Gamemode.CREATIVE;
-import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_PACKET_DECODER;
-import static xyz.jonesdev.sonar.api.fallback.FallbackPipelines.FALLBACK_PACKET_ENCODER;
-import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;
-
-public final class FallbackVerificationHandler implements FallbackPacketListener {
-  private static final Random RANDOM = new Random();
-  private static final Fallback FALLBACK = Sonar.get().getFallback();
-
-  // General
-  private final SystemTimer login = new SystemTimer();
-  private final @NotNull FallbackUser user;
-  private final String username;
-  private final UUID playerUuid;
-  private @NotNull State state = State.LOGIN_ACK; // 1.20.2
-
-  // Checks
-  private short expectedTransactionId;
-  private int expectedKeepAliveId, expectedTeleportId = -1;
-  private int tick, totalReceivedPackets, ignoredMovementTicks;
-  private double posX, posY, posZ, lastY, spawnYPosition;
-  private boolean resolvedClientBrand, resolvedClientSettings;
-  private boolean listenForMovements;
-
-  // Map captcha
-  private final SystemTimer keepAlive = new SystemTimer();
-  private final SystemTimer actionBar = new SystemTimer();
-  private @Nullable PreparedMapInfo captcha;
-  private int captchaTriesLeft;
-
-  public enum State {
-    // 1.20.2 configuration state
-    LOGIN_ACK, CONFIGURE,
-    // pre-JOIN ping check
-    KEEP_ALIVE,
-    // post-JOIN checks
-    CLIENT_SETTINGS, PLUGIN_MESSAGE, TRANSACTION,
-    // PLAY checks
-    TELEPORT, POSITION,
-    // Captcha
-    MAP_CAPTCHA,
-    // Done
-    SUCCESS
-  }
-
-  public FallbackVerificationHandler(final @NotNull FallbackUser user,
-                                     final @NotNull String username,
-                                     final @NotNull UUID playerUuid) {
-    this.user = user;
-    this.username = username;
-    this.playerUuid = playerUuid;
-
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_20_2) < 0) {
-      // Start initializing the actual join process
-      initialJoinProcess();
-    }
-  }
-
-  private void configure() {
-    // Set the state to CONFIGURE to avoid false positives
-    state = State.CONFIGURE;
-    // Send the necessary configuration packets to the client
-    user.delayedWrite(REGISTRY_SYNC);
-    user.delayedWrite(FINISH_CONFIGURATION);
-    // Send all packets in one flush
-    user.getChannel().flush();
-    // Set decoder state to actually catch all packets
-    updateEncoderDecoderState(FallbackPacketRegistry.CONFIG);
-  }
-
-  private void updateEncoderDecoderState(final @NotNull FallbackPacketRegistry registry) {
-    val decoder = (FallbackPacketDecoder) user.getChannel().pipeline().get(FALLBACK_PACKET_DECODER);
-    val encoder = (FallbackPacketEncoder) user.getChannel().pipeline().get(FALLBACK_PACKET_ENCODER);
-    if (decoder != null && encoder != null) {
-      // Update the packet registry state to be able to listen for CONFIG packets
-      decoder.updateRegistry(registry);
-      encoder.updateRegistry(registry);
-    } else {
-      // Something went wrong - the decoder should not be null
-      FALLBACK.getLogger().warn("Necessary pipelines for {} not found", username);
-      // Close the channel to prevent bypasses or other potential exploits
-      user.getChannel().close();
-    }
-  }
-
-  private void initialJoinProcess() {
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) < 0) {
-      // 1.7 players don't have KeepAlive packets in the login process
-      sendJoinGamePacket();
-    } else {
-      // Set the state to KEEP_ALIVE to avoid false positives
-      state = State.KEEP_ALIVE;
-      // Generate a random KeepAlive ID for the pre-join check
-      expectedKeepAliveId = RANDOM.nextInt();
-      // Send first KeepAlive to check if the connection is somewhat responsive
-      user.write(new KeepAlivePacket(expectedKeepAliveId));
-    }
-  }
-
-  private void sendTransaction() {
-    // Set the state to TRANSACTION to avoid false positives
-    // and go on with the flow of the verification.
-    state = State.TRANSACTION;
-    // Generate a random transaction ID
-    expectedTransactionId = (short) RANDOM.nextInt();
-    // Send a transaction with the given ID
-    user.write(new TransactionPacket(0, expectedTransactionId, false));
-  }
-
-  private void sendJoinGamePacket() {
-    final boolean v1_20_2 = user.getProtocolVersion().compareTo(MINECRAFT_1_20_2) >= 0;
-    if (!v1_20_2) {
-      // Set the state to CLIENT_SETTINGS to avoid false positives
-      // (1.20.2 needs the LOGIN_ACK state) and go on with
-      // the flow of the verification.
-      state = State.CLIENT_SETTINGS;
-    }
-    // Send the JoinGame packet so we can continue the verification
-    user.write(joinGame);
-    if (v1_20_2) {
-      // Perform the transaction check since the ClientSettings
-      // and PluginMessage packets have already been validated.
-      sendTransaction();
-    }
-  }
-
-  private void sendAbilitiesAndTeleport() {
-    // Set the state to TELEPORT to avoid false positives
-    // and go on with the flow of the verification.
-    state = State.TELEPORT;
-    // Make sure the player is unable to fly (e.g. if the player is in creative mode)
-    if (Sonar.get().getConfig().getVerification().getGravity().getGamemode() == CREATIVE) {
-      user.delayedWrite(DEFAULT_ABILITIES);
-    }
-    // Generate the current teleport ID
-    expectedTeleportId = RANDOM.nextInt();
-    // Add a little randomization to the spawn y coordinate
-    spawnYPosition = dynamicSpawnYPosition + RANDOM.nextDouble(0.4);
-    // Teleport the player to the spawn position
-    user.delayedWrite(new PlayerPositionLookPacket(
-      SPAWN_X_POSITION, spawnYPosition, SPAWN_Z_POSITION,
-      0f, -90f, expectedTeleportId, false));
-    // Make sure the player escapes the 1.18.2+ "Loading terrain" screen
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_18_2) >= 0) {
-      user.delayedWrite(dynamicSpawnPosition);
-    }
-  }
-
-  private void sendChunkData() {
-    // If we don't have gravity and captcha enabled, simply finish verification
-    if (!Sonar.get().getConfig().getVerification().getGravity().isEnabled()
-      && !FALLBACK.shouldDoMapCaptcha()) {
-      // Save some work by finishing before sending even more packets
-      finish();
-      return;
-    }
-    // Set the state to POSITION to avoid false positives
-    // and go on with the flow of the verification.
-    state = State.POSITION;
-    // 1.20.3 packets introduced game events
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_20_3) >= 0) {
-      // Make sure the client knows that we're sending chunks next
-      user.delayedWrite(START_WRITING_CHUNKS);
-    }
-    // Teleport player into the fake lobby by sending an empty chunk
-    user.delayedWrite(EMPTY_CHUNK_DATA);
-    // Checking gravity is disabled, just finish verification
-    if (!Sonar.get().getConfig().getVerification().getGravity().isEnabled()) {
-      // Switch to captcha state if needed
-      captchaOrFinish();
-      return;
-    }
-    // Send an UpdateSectionBlocks packet with a platform of blocks
-    // to check if the player collides with the solid platform.
-    user.delayedWrite(updateSectionBlocks);
-    // Send all packets in one flush
-    user.getChannel().flush();
-  }
-
-  private static boolean validateClientLocale(final @SuppressWarnings("unused") @NotNull FallbackUser user,
-                                              final String locale) {
-    // Check the client locale by performing a simple regex check on it
-    final Pattern pattern = Sonar.get().getConfig().getVerification().getValidLocaleRegex();
-    return pattern.matcher(locale).matches(); // Disallow non-ascii characters (by default)
-  }
-
-  private static boolean validateClientBrand(final @NotNull FallbackUser user, final ByteBuf content) {
-    // We have to catch every DecoderException, so we can fail and punish
-    // the player instead of only disconnecting them due to an exception.
-    try {
-      // No need to check for empty brands since ProtocolUtil#readBrandMessage
-      // already performs these checks by default.
-      final String read = ProtocolUtil.readBrandMessage(content);
-      // Check if the decoded client brand string is too long
-      if (read.length() > Sonar.get().getConfig().getVerification().getBrand().getMaxLength()) {
-        return false;
-      }
-      // Regex pattern for validating client brands
-      final Pattern pattern = Sonar.get().getConfig().getVerification().getBrand().getValidRegex();
-      return !read.equals("Vanilla") // The normal brand is always lowercase
-        && pattern.matcher(read).matches(); // Disallow non-ascii characters (by default)
-    } catch (DecoderException exception) {
-      // Fail if the string (client brand) could not be decoded properly
-      user.fail("could not decode string");
-      // Throw the exception so we don't continue checking
-      throw exception;
-    }
-  }
-
-  private void handlePacketDuringCaptcha(final @NotNull FallbackPacket packet) {
-    // Check if the player took too long to enter the captcha
-    final int maxDuration = Sonar.get().getConfig().getVerification().getMap().getMaxDuration();
-    checkFrame(!login.elapsed(maxDuration), "took too long to enter captcha");
-
-    // Handle incoming chat messages
-    if (packet instanceof UniversalChatPacket) {
-      final UniversalChatPacket chat = (UniversalChatPacket) packet;
-      Objects.requireNonNull(captcha);
-      if (!chat.getMessage().equals(captcha.getInfo().getAnswer())) {
-        // Captcha is incorrect
-        checkFrame(captchaTriesLeft-- > 0, "failed captcha too often");
-        user.write(incorrectCaptcha);
-        return;
-      }
-      // Captcha is correct
-      finish();
-      return;
-    }
-
-    // Every second
-    if (actionBar.elapsed(1000L)) {
-      final String actionBarMessage = Sonar.get().getConfig().getVerification().getMap().getEnterCodeActionBar();
-      // Only send action bar if the message is actually supposed to be sent
-      if (!actionBarMessage.isEmpty()) {
-        final String timeLeft = String.format("%.0f", (maxDuration - login.delay()) / 1000D);
-        user.write(new UniversalChatPacket(MiniMessage.miniMessage().deserialize(
-          actionBarMessage.replace("%time-left%", timeLeft)), UniversalChatPacket.GAME_INFO_TYPE));
-        // Make sure to reset the timer
-        actionBar.reset();
-      }
-    }
-
-    // Every 10 seconds
-    if (keepAlive.elapsed(10_000L)) {
-      // Send a KeepAlive packet to prevent timeout
-      user.delayedWrite(CAPTCHA_KEEP_ALIVE);
-      // Send both packets in one flush
-      user.getChannel().flush();
-      // Make sure to reset the timer
-      keepAlive.reset();
-    }
-  }
-
-  @Override
-  public void handle(final @NotNull FallbackPacket packet) {
-    // The player has already been verified, drop all other packets
-    if (state == State.SUCCESS) return;
-
-    // We are expecting a captcha code in chat, drop all other packets
-    if (state == State.MAP_CAPTCHA) {
-      handlePacketDuringCaptcha(packet);
-      return;
-    }
-
-    // Check if the player is not sending a ton of packets to the server
-    final int maxPackets = Sonar.get().getConfig().getVerification().getMaxLoginPackets() + maxMovementTick;
-    checkFrame(++totalReceivedPackets < maxPackets, "too many packets");
-
-    // Check for timeout since the player could be sending packets but not important ones
-    final long timeout = Sonar.get().getConfig().getVerification().getMaxPing();
-    checkFrame(!login.elapsed(timeout), "time limit exceeded");
-
-    if (packet instanceof LoginAcknowledgedPacket) {
-      // Check if we are currently expecting a LoginAcknowledged packet
-      assertState(State.LOGIN_ACK);
-
-      // Start the configuration process for 1.20.2 clients
-      configure();
-    }
-
-    if (packet instanceof FinishConfigurationPacket) {
-      // Check if we are currently expecting a FinishConfiguration packet
-      assertState(State.CONFIGURE);
-
-      // Check if the client has already sent valid ClientSettings and PluginMessage packets
-      checkFrame(resolvedClientBrand, "did not resolve client brand");
-      checkFrame(resolvedClientSettings, "did not resolve client settings");
-
-      // Start initializing the actual join process
-      updateEncoderDecoderState(FallbackPacketRegistry.GAME);
-      initialJoinProcess();
-    }
-
-    if (packet instanceof KeepAlivePacket) {
-      final KeepAlivePacket keepAlive = (KeepAlivePacket) packet;
-
-      // 1.7-1.8.9 are sending a KeepAlive packet with the ID 0 every 20 ticks
-      if (keepAlive.getId() == 0 && user.getProtocolVersion().compareTo(MINECRAFT_1_8) <= 0) return;
-
-      // Check if we are currently expecting a KeepAlive packet
-      assertState(State.KEEP_ALIVE);
-
-      checkFrame(keepAlive.getId() == expectedKeepAliveId, "invalid KeepAlive ID");
-
-      // The correct KeepAlive packet has been received
-      sendJoinGamePacket();
-    }
-
-    if (packet instanceof ClientSettingsPacket) {
-      final ClientSettingsPacket clientSettings = (ClientSettingsPacket) packet;
-
-      // Validate the locale using a regex to filter unwanted characters.
-      checkFrame(validateClientLocale(user, clientSettings.getLocale()), "invalid locale");
-
-      // Clients sometimes mess up the ClientSettings or PluginMessage packet.
-      if (state == State.CLIENT_SETTINGS) {
-        state = State.PLUGIN_MESSAGE;
-      }
-
-      // Make sure we mark the ClientSettings as valid
-      resolvedClientSettings = true;
-    }
-
-    if (packet instanceof PluginMessagePacket) {
-      final PluginMessagePacket pluginMessage = (PluginMessagePacket) packet;
-
-      // Only the brand channel is important, drop the rest
-      if (pluginMessage.getChannel().equals("MC|Brand")
-        || pluginMessage.getChannel().equals("minecraft:brand")) {
-        // Check if the brand packet was sent twice,
-        // which is not possible when using a vanilla Minecraft client.
-        checkFrame(!resolvedClientBrand, "duplicate client brand packet");
-
-        // Check if the channel is correct - 1.13 uses the new namespace
-        // system ('minecraft:' + channel) and anything below 1.13 uses
-        // the legacy namespace system ('MC|' + channel).
-        final boolean v1_13 = user.getProtocolVersion().compareTo(MINECRAFT_1_13) >= 0;
-        checkFrame(pluginMessage.getChannel().equals("MC|Brand") || v1_13, "invalid channel");
-
-        // Validate the client branding using a regex to filter unwanted characters.
-        if (Sonar.get().getConfig().getVerification().getBrand().isEnabled()) {
-          checkFrame(validateClientBrand(user, pluginMessage.content()), "invalid client brand");
-        }
-
-        // Clients sometimes mess up the ClientSettings or PluginMessage packet.
-        if (state == State.PLUGIN_MESSAGE) {
-          // Send the transaction packet
-          sendTransaction();
-        }
-
-        // Make sure we mark the PluginMessage as valid
-        resolvedClientBrand = true;
-      }
-    }
-
-    if (packet instanceof TransactionPacket) {
-      // Check if we are currently expecting a Transaction packet
-      assertState(State.TRANSACTION);
-
-      final TransactionPacket transaction = (TransactionPacket) packet;
-
-      // The transaction should always be accepted
-      checkFrame(transaction.isAccepted(), "transaction not accepted?!");
-      // Check if the transaction ID is valid
-      checkFrame(transaction.getId() == expectedTransactionId, "invalid transaction id");
-
-      // First, send an Abilities packet to the client to make
-      // sure the player falls even in spectator mode.
-      // Then, teleport the player to the spawn position.
-      sendAbilitiesAndTeleport();
-
-      // 1.7-1.8 clients do not have a TeleportConfirm packet
-      if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) <= 0) {
-        // Immediately send the chunk data as 1.7-1.8 can't confirm teleport packets
-        sendChunkData();
-      } else {
-        // Send all previously sent packets in one flush since we didn't flush
-        // the channel earlier when we teleported the player.
-        user.getChannel().flush();
-      }
-    }
-
-    if (packet instanceof TeleportConfirmPacket) {
-      // Check if we are currently expecting a TeleportConfirm packet
-      assertState(State.TELEPORT);
-
-      // Check if the teleport ID is correct
-      final TeleportConfirmPacket teleportConfirm = (TeleportConfirmPacket) packet;
-      checkFrame(teleportConfirm.getTeleportId() == expectedTeleportId, "invalid teleport ID");
-
-      // Reset all values to ensure safety on teleport
-      tick = 1;
-      posY = lastY = -1;
-      expectedTeleportId = -1;
-
-      // Now we can send the chunk data
-      sendChunkData();
-    }
-
-    if (state != State.LOGIN_ACK) {
-      if (packet instanceof PlayerPositionPacket) {
-        final PlayerPositionPacket position = (PlayerPositionPacket) packet;
-        handlePositionUpdate(position.getX(), position.getY(), position.getZ(), position.isOnGround());
-      }
-
-      if (packet instanceof PlayerPositionLookPacket) {
-        final PlayerPositionLookPacket position = (PlayerPositionLookPacket) packet;
-        handlePositionUpdate(position.getX(), position.getY(), position.getZ(), position.isOnGround());
-      }
-
-      if (packet instanceof PlayerTickPacket) {
-        final PlayerTickPacket player = (PlayerTickPacket) packet;
-        handlePositionUpdate(posX, posY, posZ, player.isOnGround());
-      }
-    }
-  }
-
-  private void handlePositionUpdate(final double x, final double y, final double z, final boolean ground) {
-    // 1.8 does not have a TeleportConfirm packet, so we need to handle the spawning differently
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) <= 0
-      && expectedTeleportId != -1 // Check if the teleport ID is currently unset
-      // Then, check if the position is equal to the spawn position
-      && x == SPAWN_X_POSITION && y == spawnYPosition && z == SPAWN_Z_POSITION) {
-      // Reset all values to ensure safety on teleport
-      tick = 1;
-      posY = -1;
-      expectedTeleportId = -1;
-      // Check for ground state in the first packet
-      checkFrame(!ground, "invalid ground state");
-    }
-
-    posX = x;
-    lastY = posY;
-    posY = y;
-    posZ = z;
-
-    // The player is not allowed to move away from the collision platform.
-    // This should not happen unless the max movement tick is configured to a high number.
-    checkFrame(Math.abs(x - BLOCKS_PER_ROW) < BLOCKS_PER_ROW, "moved too far (x)");
-    checkFrame(Math.abs(z - BLOCKS_PER_ROW) < BLOCKS_PER_ROW, "moved too far (z)");
-
-    // Check if the client hasn't moved before sending the first movement packet
-    if (!listenForMovements) {
-      if (posX == SPAWN_X_POSITION && posZ == SPAWN_Z_POSITION) {
-        // Now, once we verified the X and Z position, we can safely check for gravity
-        listenForMovements = true;
-      }
-
-      lastY = spawnYPosition;
-      return;
-    }
-
-    final double deltaY = lastY - y;
-    // The deltaY is 0 whenever the player sends their first position packet.
-    // We have to account for this or the player will fail the verification.
-    if (deltaY == 0) {
-      // Check for too many ignored Y ticks
-      final int maxIgnoredTicks = Sonar.get().getConfig().getVerification().getGravity().getMaxIgnoredTicks();
-      checkFrame(++ignoredMovementTicks < maxIgnoredTicks, "too many ignored ticks");
-      return;
-    }
-
-    // Calculate the difference between the player's Y coordinate and the expected Y coordinate
-    double collisionOffsetY = (DEFAULT_Y_COLLIDE_POSITION + blockType.getBlockHeight()) - y;
-    if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) < 0) {
-      collisionOffsetY += 1.62f; // 1.7 is weird and sends the head position instead of the AABB minY
-    }
-
-    // Check if the player is colliding by performing a basic Y offset check.
-    // The offset cannot be greater than 0 since the blocks will not let the player fall through them.
-    checkFrame(collisionOffsetY <= 0, "fell through blocks: " + collisionOffsetY);
-
-    if (tick > maxMovementTick) {
-      // Log/debug position if enabled in the configuration
-      if (Sonar.get().getConfig().getVerification().isDebugXYZPositions()) {
-        FALLBACK.getLogger().info("{}: {}/{}/{} - deltaY: {} - ground: {} - collision: {}",
-          username, x, y, z, deltaY, ground, collisionOffsetY);
-      }
-
-      // If the collision check is disabled, finish verification
-      if (!Sonar.get().getConfig().getVerification().getGravity().isCheckCollisions()) {
-        captchaOrFinish();
-        return;
-      }
-
-      // Perform the collision check
-      if (ground) {
-        // Make sure the player is actually colliding with the blocks and not only spoofing ground
-        checkFrame(collisionOffsetY > -0.03, "illegal collision: " + collisionOffsetY);
-        // Check if the player is not spoofing ground
-        // We cannot use checkFrame as it interferes with the CAPTCHA
-        if (collisionOffsetY > -1) {
-          // The player is colliding to blocks, finish verification
-          captchaOrFinish();
-        }
-        return;
-      } else {
-        // Make sure the player is colliding with blocks but is sending an invalid ground state
-        checkFrame(collisionOffsetY != 0, "no ground: " + collisionOffsetY);
-      }
-    } else {
-      // Check if the player is spoofing the ground state
-      checkFrame(!ground, "spoofed ground state");
-    }
-
-    // Make sure we don't run out of predicted Y motions
-    checkFrame(tick < preparedCachedYMotions.length, "too many movements");
-
-    if (!ground) {
-      final double predictedY = preparedCachedYMotions[tick];
-      final double offsetY = Math.abs(deltaY - predictedY);
-
-      // Log/debug position if enabled in the configuration
-      if (Sonar.get().getConfig().getVerification().isDebugXYZPositions()) {
-        FALLBACK.getLogger().info("{}: {}/{}/{} - deltaY: {} - prediction: {} - offset: {}",
-          username, x, y, z, deltaY, predictedY, offsetY);
-      }
-
-      // Check if the y motion is roughly equal to the predicted value
-      checkFrame(offsetY < 0.005, String.format("invalid gravity: %d, %.7f, %.10f, %.10f != %.10f",
-        tick, y, offsetY, deltaY, predictedY));
-    }
-    tick++;
-  }
-
-  private void captchaOrFinish() {
-    if (FALLBACK.shouldDoMapCaptcha()) {
-      // Initialize the map captcha
-      handleCAPTCHA();
-      return;
-    }
-    // Finish the verification
-    finish();
-  }
-
-  private void handleCAPTCHA() {
-    if (MapInfoPreparer.getPreparedCAPTCHAs() == 0) {
-      // This should not happen, but we have to return if there is no captcha prepared
-      user.disconnect(Sonar.get().getConfig().getVerification().getCurrentlyPreparing());
-      return;
-    }
-    // Set the state to MAP_CAPTCHA, so we don't handle any unnecessary packets
-    state = State.MAP_CAPTCHA;
-    if (!Sonar.get().getConfig().getVerification().getGravity().isEnabled()
-      && user.getProtocolVersion().compareTo(MINECRAFT_1_18_2) >= 0) {
-      // Make sure the player escapes the 1.18.2+ "Loading terrain" screen
-      user.delayedWrite(CAPTCHA_SPAWN_POSITION);
-    }
-    // Reset max tries
-    captchaTriesLeft = Sonar.get().getConfig().getVerification().getMap().getMaxTries();
-
-    // Set slot to map
-    user.delayedWrite(new SetSlotPacket(0, 36, 1, 0,
-      ItemMapType.FILLED_MAP.getId(user.getProtocolVersion()), SetSlotPacket.MAP_NBT));
-    // Send random captcha to the player
-    captcha = MapInfoPreparer.getRandomCaptcha();
-    Objects.requireNonNull(captcha).write(user);
-    // Teleport the player to the position above the platform
-    user.delayedWrite(CAPTCHA_POSITION);
-    // Make sure the player cannot move
-    user.delayedWrite(CAPTCHA_ABILITIES);
-    // Make sure the player knows what to do
-    user.delayedWrite(enterCodeMessage);
-    // Send all packets in one flush
-    user.getChannel().flush();
-  }
-
-  private void finish() {
-    // Something must've gone horribly wrong...
-    if (state == State.SUCCESS) return;
-
-    state = State.SUCCESS;
-
-    // Increment amount of total successful verifications
-    GlobalSonarStatistics.totalSuccessfulVerifications++;
-
-    // Add verified player to the database
-    final VerifiedPlayer verifiedPlayer = new VerifiedPlayer(user.getInetAddress().toString(), playerUuid,
-      login.getStart());
-    Sonar.get().getVerifiedPlayerController().add(verifiedPlayer);
-
-    // Call the VerifySuccessEvent for external API usage
-    Sonar.get().getEventManager().publish(new UserVerifySuccessEvent(username, playerUuid, user, login.delay()));
-
-    // Disconnect player with the verification success message
-    user.disconnect(Sonar.get().getConfig().getVerification().getVerificationSuccess());
-
-    FALLBACK.getLogger().info(Sonar.get().getConfig().getVerification().getSuccessLog()
-      .replace("%name%", username)
-      .replace("%time%", login.toString()));
-  }
-
-  /**
-   * Fails the verification if a certain state is unexpected.
-   *
-   * @param expectedState Expected state
-   */
-  private void assertState(final @NotNull State expectedState) {
-    checkFrame(state == expectedState, "expected " + expectedState + ", got " + state);
-  }
-
-  /**
-   * Checks if a certain condition is met, fails the verification if not.
-   *
-   * @param condition Condition to fail if it's false
-   * @param message   Messages displayed in the stacktrace
-   */
-  private void checkFrame(final boolean condition, final String message) {
-    if (!condition) {
-      if (state == State.POSITION // Gravity check
-        && Sonar.get().getConfig().getVerification().getGravity().isCaptchaOnFail()) {
-        handleCAPTCHA();
-        return;
-      }
-      user.fail(message);
-      throw new CorruptedFrameException(message);
-    }
-  }
-}
@@ -21,29 +21,29 @@ import io.netty.buffer.ByteBuf;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.handler.codec.CorruptedFrameException;
+import lombok.Setter;
 import org.jetbrains.annotations.NotNull;
-import xyz.jonesdev.sonar.api.fallback.FallbackUser;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;

 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.utility.protocol.VarIntUtil.readVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;

 public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {
-  private final FallbackUser user;
-  private final FallbackPacketListener listener;
+  private final ProtocolVersion protocolVersion;
  private FallbackPacketRegistry.ProtocolRegistry registry;
+  @Setter
+  private FallbackPacketListener listener;

-  public FallbackPacketDecoder(final @NotNull FallbackUser user,
-                               final @NotNull FallbackPacketListener listener) {
-    this.user = user;
-    this.listener = listener;
-    updateRegistry(user.getProtocolVersion().compareTo(MINECRAFT_1_20_2) >= 0 ? LOGIN : GAME);
+  public FallbackPacketDecoder(final @NotNull ProtocolVersion protocolVersion) {
+    this.protocolVersion = protocolVersion;
+    updateRegistry(protocolVersion.compareTo(MINECRAFT_1_20_2) >= 0 ? LOGIN : GAME);
  }

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

  @Override
@@ -73,24 +73,24 @@ public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {

      try {
        // Ensure that the packet isn't too large or too small
-        doLengthSanityChecks(byteBuf, packet);
+        checkPacketSize(byteBuf, packet);

        try {
          // Try to decode the packet for the given protocol version
-          packet.decode(byteBuf, user.getProtocolVersion());
+          packet.decode(byteBuf, protocolVersion);
        } catch (Throwable throwable) {
-          user.fail("failed to decode packet (" + byteBuf.readableBytes() + " bytes)");
          throw new CorruptedFrameException("Failed to decode packet");
        }

        // Check if the packet still has bytes left after we decoded it
        if (byteBuf.isReadable()) {
-          user.fail("could not read packet to end (" + byteBuf.readableBytes() + " bytes left)");
          throw new CorruptedFrameException("Could not read packet to end");
        }

        // Let our verification handler process the packet
-        listener.handle(packet);
+        if (listener != null) {
+          listener.handle(packet);
+        }

        // Fire channel read to avoid timeout
        ctx.fireChannelRead(packet);
@@ -98,24 +98,18 @@ public final class FallbackPacketDecoder extends ChannelInboundHandlerAdapter {
        // Release the ByteBuf to avoid memory leaks
        byteBuf.release();
      }
-    } else {
-      // Packets are always ByteBufs - if we detect an unknown object, fail verification
-      user.fail("packet is not a ByteBuf");
-      throw new CorruptedFrameException("Packet is not a ByteBuf?!");
    }
  }

-  private void doLengthSanityChecks(final ByteBuf byteBuf,
-                                    final @NotNull FallbackPacket packet) throws Exception {
-    final int expectedMaxLen = packet.expectedMaxLength(byteBuf, user.getProtocolVersion());
+  private void checkPacketSize(final @NotNull ByteBuf byteBuf,
+                               final @NotNull FallbackPacket packet) throws Exception {
+    final int expectedMaxLen = packet.expectedMaxLength(byteBuf, protocolVersion);
    if (expectedMaxLen != -1 && byteBuf.readableBytes() > expectedMaxLen) {
-      user.fail("packet too large (" + byteBuf.readableBytes() + " bytes)");
      throw new CorruptedFrameException("Packet too large");
    }

-    final int expectedMinLen = packet.expectedMinLength(byteBuf, user.getProtocolVersion());
-    if (byteBuf.readableBytes() < expectedMinLen) {
-      user.fail("packet too small (" + byteBuf.readableBytes() + " bytes)");
+    final int expectedMinLen = packet.expectedMinLength(byteBuf, protocolVersion);
+    if (expectedMinLen != -1 && byteBuf.readableBytes() < expectedMinLen) {
      throw new CorruptedFrameException("Packet too small");
    }
  }
@@ -25,7 +25,7 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;

 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.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;

 public final class FallbackPacketEncoder extends MessageToByteEncoder<FallbackPacket> {
  private final ProtocolVersion protocolVersion;
@@ -42,10 +42,12 @@ public final class FallbackPacketEncoder extends MessageToByteEncoder<FallbackPa

  @Override
  protected void encode(final ChannelHandlerContext ctx,
-                        final FallbackPacket msg,
+                        final @NotNull FallbackPacket packet,
                        final ByteBuf out) throws Exception {
-    final int packetId = registry.getPacketId(msg);
+    final FallbackPacket originalPacket = packet instanceof FallbackPacketSnapshot
+      ? ((FallbackPacketSnapshot) packet).getOriginalPacket() : packet;
+    final int packetId = registry.getPacketId(originalPacket);
    writeVarInt(out, packetId);
-    msg.encode(out, protocolVersion);
+    packet.encode(out, protocolVersion);
  }
 }
@@ -19,11 +19,13 @@ 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 org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.config.FinishConfigurationPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.config.RegistryDataPacket;
+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.LoginAcknowledgedPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.login.LoginSuccessPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;
@@ -33,40 +35,46 @@ import java.util.function.Supplier;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;

-// Most of this is taken from
+// Mostly taken from
 // https://github.com/PaperMC/Velocity/blob/dev/3.0.0/proxy/src/main/java/com/velocitypowered/proxy/protocol/StateRegistry.java
 public enum FallbackPacketRegistry {
  LOGIN {
    {
-      serverbound.register(LoginAcknowledgedPacket.class, LoginAcknowledgedPacket::new,
-        map(0x03, MINECRAFT_1_20_2, false));
-
-      clientbound.register(LoginSuccessPacket.class, LoginSuccessPacket::new,
-        map(0x02, MINECRAFT_1_7_2, false));
-
      clientbound.register(DisconnectPacket.class, DisconnectPacket::new,
        map(0x00, MINECRAFT_1_7_2, true));
+      clientbound.register(LoginSuccessPacket.class, LoginSuccessPacket::new,
+        map(0x02, MINECRAFT_1_7_2, true));
+
+      serverbound.register(LoginAcknowledgedPacket.class, LoginAcknowledgedPacket::new,
+        map(0x03, MINECRAFT_1_20_2, false));
    }
  },
  CONFIG {
    {
      clientbound.register(DisconnectPacket.class, DisconnectPacket::new,
-        map(0x01, MINECRAFT_1_20_2, true));
+        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(0x02, MINECRAFT_1_20_2, false),
+        map(0x03, MINECRAFT_1_20_5, false));
      clientbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
-        map(0x03, MINECRAFT_1_20_2, false));
+        map(0x03, MINECRAFT_1_20_2, false),
+        map(0x04, MINECRAFT_1_20_5, false));
      clientbound.register(RegistryDataPacket.class, RegistryDataPacket::new,
-        map(0x05, MINECRAFT_1_20_2, true));
+        map(0x05, MINECRAFT_1_20_2, true),
+        map(0x07, MINECRAFT_1_20_5, true));

      serverbound.register(ClientSettingsPacket.class, ClientSettingsPacket::new,
        map(0x00, MINECRAFT_1_20_2, false));
      serverbound.register(PluginMessagePacket.class, PluginMessagePacket::new,
-        map(0x01, MINECRAFT_1_20_2, false));
+        map(0x01, MINECRAFT_1_20_2, false),
+        map(0x02, MINECRAFT_1_20_5, false));
      serverbound.register(FinishConfigurationPacket.class, FinishConfigurationPacket::new,
-        map(0x02, MINECRAFT_1_20_2, false));
+        map(0x02, MINECRAFT_1_20_2, false),
+        map(0x03, MINECRAFT_1_20_5, false));
      serverbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
-        map(0x03, MINECRAFT_1_20_2, false));
+        map(0x03, MINECRAFT_1_20_2, false),
+        map(0x04, MINECRAFT_1_20_5, false));
    }
  },
  GAME {
@@ -84,7 +92,8 @@ public enum FallbackPacketRegistry {
        map(0x25, MINECRAFT_1_19_1, true),
        map(0x24, MINECRAFT_1_19_3, true),
        map(0x28, MINECRAFT_1_19_4, true),
-        map(0x29, MINECRAFT_1_20_2, true));
+        map(0x29, MINECRAFT_1_20_2, true),
+        map(0x2B, MINECRAFT_1_20_5, true));
      clientbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
        map(0x00, MINECRAFT_1_7_2, false),
        map(0x1F, MINECRAFT_1_9, false),
@@ -98,7 +107,8 @@ public enum FallbackPacketRegistry {
        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(0x24, MINECRAFT_1_20_2, false),
+        map(0x26, MINECRAFT_1_20_5, false));
      clientbound.register(DisconnectPacket.class, DisconnectPacket::new,
        map(0x40, MINECRAFT_1_7_2, true),
        map(0x1A, MINECRAFT_1_9, true),
@@ -112,7 +122,8 @@ public enum FallbackPacketRegistry {
        map(0x19, MINECRAFT_1_19_1, true),
        map(0x17, MINECRAFT_1_19_3, true),
        map(0x1A, MINECRAFT_1_19_4, true),
-        map(0x1B, MINECRAFT_1_20_2, true));
+        map(0x1B, MINECRAFT_1_20_2, true),
+        map(0x1D, MINECRAFT_1_20_5, true));
      clientbound.register(PlayerPositionLookPacket.class, PlayerPositionLookPacket::new,
        map(0x08, MINECRAFT_1_7_2, true),
        map(0x2E, MINECRAFT_1_9, true),
@@ -127,7 +138,8 @@ public enum FallbackPacketRegistry {
        map(0x39, MINECRAFT_1_19_1, true),
        map(0x38, MINECRAFT_1_19_3, true),
        map(0x3C, MINECRAFT_1_19_4, true),
-        map(0x3E, MINECRAFT_1_20_2, true));
+        map(0x3E, MINECRAFT_1_20_2, true),
+        map(0x40, MINECRAFT_1_20_5, true));
      clientbound.register(ClientAbilitiesPacket.class, ClientAbilitiesPacket::new,
        map(0x39, MINECRAFT_1_7_2, true),
        map(0x2B, MINECRAFT_1_9, true),
@@ -142,7 +154,8 @@ public enum FallbackPacketRegistry {
        map(0x31, MINECRAFT_1_19_1, true),
        map(0x30, MINECRAFT_1_19_3, true),
        map(0x34, MINECRAFT_1_19_4, true),
-        map(0x36, MINECRAFT_1_20_2, true));
+        map(0x36, MINECRAFT_1_20_2, true),
+        map(0x38, MINECRAFT_1_20_5, true));
      clientbound.register(ChunkDataPacket.class, ChunkDataPacket::new,
        map(0x21, MINECRAFT_1_7_2, true),
        map(0x20, MINECRAFT_1_9, true),
@@ -156,7 +169,61 @@ public enum FallbackPacketRegistry {
        map(0x21, MINECRAFT_1_19_1, true),
        map(0x20, MINECRAFT_1_19_3, true),
        map(0x24, MINECRAFT_1_19_4, true),
-        map(0x25, MINECRAFT_1_20_2, true));
+        map(0x25, MINECRAFT_1_20_2, true),
+        map(0x27, MINECRAFT_1_20_5, true));
+      clientbound.register(RemoveEntitiesPacket.class, RemoveEntitiesPacket::new,
+        map(0x13, MINECRAFT_1_7_2, true),
+        map(0x30, MINECRAFT_1_9, true),
+        map(0x31, MINECRAFT_1_12, true),
+        map(0x32, MINECRAFT_1_12_2, true),
+        map(0x35, MINECRAFT_1_13, true),
+        map(0x37, MINECRAFT_1_14, true),
+        map(0x38, MINECRAFT_1_15, true),
+        map(0x37, MINECRAFT_1_16, true),
+        map(0x36, MINECRAFT_1_16_2, true),
+        map(0x3A, MINECRAFT_1_17, true),
+        map(0x38, MINECRAFT_1_19, true),
+        map(0x3B, MINECRAFT_1_19_1, true),
+        map(0x3A, MINECRAFT_1_19_3, true),
+        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));
+      clientbound.register(SetPassengersPacket.class, SetPassengersPacket::new,
+        map(0x1B, MINECRAFT_1_7_2, true),
+        map(0x40, MINECRAFT_1_9, true),
+        map(0x42, MINECRAFT_1_12, true),
+        map(0x43, MINECRAFT_1_12_1, true),
+        map(0x46, MINECRAFT_1_13, true),
+        map(0x4A, MINECRAFT_1_14, true),
+        map(0x4B, MINECRAFT_1_15, true),
+        map(0x54, MINECRAFT_1_17, true),
+        map(0x57, MINECRAFT_1_19_1, true),
+        map(0x55, MINECRAFT_1_19_3, true),
+        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));
+      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),
@@ -170,7 +237,8 @@ public enum FallbackPacketRegistry {
        map(0x3F, MINECRAFT_1_19_3, true),
        map(0x43, MINECRAFT_1_19_4, true),
        map(0x45, MINECRAFT_1_20_2, true),
-        map(0x47, MINECRAFT_1_20_3, true));
+        map(0x47, MINECRAFT_1_20_3, true),
+        map(0x49, MINECRAFT_1_20_5, true));
      clientbound.register(TransactionPacket.class, TransactionPacket::new,
        map(0x32, MINECRAFT_1_7_2, true),
        map(0x11, MINECRAFT_1_9, true),
@@ -183,7 +251,8 @@ public enum FallbackPacketRegistry {
        map(0x2F, MINECRAFT_1_19_1, true),
        map(0x2E, MINECRAFT_1_19_3, true),
        map(0x32, MINECRAFT_1_19_4, true),
-        map(0x33, MINECRAFT_1_20_2, true));
+        map(0x33, MINECRAFT_1_20_2, true),
+        map(0x35, MINECRAFT_1_20_5, true));
      clientbound.register(DefaultSpawnPositionPacket.class, DefaultSpawnPositionPacket::new,
        map(0x05, MINECRAFT_1_7_2, true),
        map(0x43, MINECRAFT_1_9, true),
@@ -199,7 +268,8 @@ public enum FallbackPacketRegistry {
        map(0x4C, MINECRAFT_1_19_3, true),
        map(0x50, MINECRAFT_1_19_4, true),
        map(0x52, MINECRAFT_1_20_2, true),
-        map(0x54, MINECRAFT_1_20_3, true));
+        map(0x54, MINECRAFT_1_20_3, true),
+        map(0x56, MINECRAFT_1_20_5, true));
      clientbound.register(MapDataPacket.class, MapDataPacket::new,
        map(0x34, MINECRAFT_1_7_2, true),
        map(0x24, MINECRAFT_1_9, true),
@@ -212,7 +282,8 @@ public enum FallbackPacketRegistry {
        map(0x26, MINECRAFT_1_19_1, true),
        map(0x25, MINECRAFT_1_19_3, true),
        map(0x29, MINECRAFT_1_19_4, true),
-        map(0x2A, MINECRAFT_1_20_2, true));
+        map(0x2A, MINECRAFT_1_20_2, true),
+        map(0x2C, MINECRAFT_1_20_5, true));
      clientbound.register(SetSlotPacket.class, SetSlotPacket::new,
        map(0x2F, MINECRAFT_1_7_2, true),
        map(0x16, MINECRAFT_1_9, true),
@@ -226,6 +297,21 @@ public enum FallbackPacketRegistry {
        map(0x12, MINECRAFT_1_19_3, true),
        map(0x14, MINECRAFT_1_19_4, true),
        map(0x15, MINECRAFT_1_20_2, true));
+      clientbound.register(SetExperiencePacket.class, SetExperiencePacket::new,
+        map(0x1F, MINECRAFT_1_7_2, true),
+        map(0x3D, MINECRAFT_1_9, true),
+        map(0x3F, MINECRAFT_1_12, true),
+        map(0x40, MINECRAFT_1_12_1, true),
+        map(0x43, MINECRAFT_1_13, true),
+        map(0x47, MINECRAFT_1_14, true),
+        map(0x48, MINECRAFT_1_15, true),
+        map(0x51, MINECRAFT_1_17, true),
+        map(0x54, MINECRAFT_1_19_1, true),
+        map(0x52, MINECRAFT_1_19_3, true),
+        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));
      clientbound.register(UniversalChatPacket.class, UniversalChatPacket::new,
        map(0x02, MINECRAFT_1_7_2, false),
        map(0x0F, MINECRAFT_1_9, false),
@@ -238,10 +324,44 @@ public enum FallbackPacketRegistry {
        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(0x69, MINECRAFT_1_20_3, false),
+        map(0x6C, MINECRAFT_1_20_5, false));
      clientbound.register(GameEventPacket.class, GameEventPacket::new,
-        map(0x20, MINECRAFT_1_20_3, true));
+        map(0x20, MINECRAFT_1_20_3, true),
+        map(0x22, MINECRAFT_1_20_5, true));
+      clientbound.register(TransferPacket.class, TransferPacket::new,
+        map(0x73, MINECRAFT_1_20_5, true));

+      serverbound.register(PaddleBoatPacket.class, PaddleBoatPacket::new,
+        map(0x11, MINECRAFT_1_9, false),
+        map(0x12, MINECRAFT_1_12, false),
+        map(0x11, MINECRAFT_1_12_1, false),
+        map(0x14, MINECRAFT_1_13, false),
+        map(0x16, MINECRAFT_1_14, false),
+        map(0x17, MINECRAFT_1_16, false),
+        map(0x16, MINECRAFT_1_17, false),
+        map(0x18, MINECRAFT_1_19, false),
+        map(0x19, MINECRAFT_1_19_1, false),
+        map(0x18, MINECRAFT_1_19_3, false),
+        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));
+      serverbound.register(PlayerInputPacket.class, PlayerInputPacket::new,
+        map(0x0C, MINECRAFT_1_7_2, false),
+        map(0x15, MINECRAFT_1_9, false),
+        map(0x16, MINECRAFT_1_12, false),
+        map(0x1A, MINECRAFT_1_13, false),
+        map(0x1C, MINECRAFT_1_14, false),
+        map(0x1D, MINECRAFT_1_16, false),
+        map(0x1C, MINECRAFT_1_17, false),
+        map(0x1E, MINECRAFT_1_19, false),
+        map(0x1F, MINECRAFT_1_19_1, false),
+        map(0x1E, MINECRAFT_1_19_3, false),
+        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));
      serverbound.register(UniversalChatPacket.class, UniversalChatPacket::new,
        map(0x01, MINECRAFT_1_7_2, false),
        map(0x02, MINECRAFT_1_9, false),
@@ -250,7 +370,8 @@ public enum FallbackPacketRegistry {
        map(0x03, MINECRAFT_1_14, false),
        map(0x04, MINECRAFT_1_19, false),
        map(0x05, MINECRAFT_1_19_1, false),
-        map(0x05, MINECRAFT_1_19_3, false));
+        map(0x05, MINECRAFT_1_19_3, false),
+        map(0x06, MINECRAFT_1_20_5, false));
      serverbound.register(KeepAlivePacket.class, KeepAlivePacket::new,
        map(0x00, MINECRAFT_1_7_2, false),
        map(0x0B, MINECRAFT_1_9, false),
@@ -265,7 +386,8 @@ public enum FallbackPacketRegistry {
        map(0x11, MINECRAFT_1_19_3, false),
        map(0x12, MINECRAFT_1_19_4, false),
        map(0x14, MINECRAFT_1_20_2, false),
-        map(0x15, MINECRAFT_1_20_3, false));
+        map(0x15, MINECRAFT_1_20_3, false),
+        map(0x18, MINECRAFT_1_20_5, false));
      serverbound.register(ClientSettingsPacket.class, ClientSettingsPacket::new,
        map(0x15, MINECRAFT_1_7_2, false),
        map(0x04, MINECRAFT_1_9, false),
@@ -276,7 +398,8 @@ public enum FallbackPacketRegistry {
        map(0x08, MINECRAFT_1_19_1, false),
        map(0x07, MINECRAFT_1_19_3, false),
        map(0x08, MINECRAFT_1_19_4, false),
-        map(0x09, MINECRAFT_1_20_2, false));
+        map(0x09, MINECRAFT_1_20_2, false),
+        map(0x0A, MINECRAFT_1_20_5, false));
      serverbound.register(PluginMessagePacket.class, PluginMessagePacket::new,
        map(0x17, MINECRAFT_1_7_2, false),
        map(0x09, MINECRAFT_1_9, false),
@@ -304,7 +427,8 @@ public enum FallbackPacketRegistry {
        map(0x14, MINECRAFT_1_19_3, false),
        map(0x15, MINECRAFT_1_19_4, false),
        map(0x17, MINECRAFT_1_20_2, false),
-        map(0x18, MINECRAFT_1_20_3, false));
+        map(0x18, MINECRAFT_1_20_3, false),
+        map(0x1B, MINECRAFT_1_20_5, false));
      serverbound.register(TeleportConfirmPacket.class, TeleportConfirmPacket::new,
        map(0x00, MINECRAFT_1_9, false));
      serverbound.register(PlayerPositionPacket.class, PlayerPositionPacket::new,
@@ -321,8 +445,9 @@ public enum FallbackPacketRegistry {
        map(0x13, MINECRAFT_1_19_3, false),
        map(0x14, MINECRAFT_1_19_4, false),
        map(0x16, MINECRAFT_1_20_2, false),
-        map(0x17, MINECRAFT_1_20_3, false));
-      serverbound.register(PlayerTickPacket.class, PlayerTickPacket::new,
+        map(0x17, MINECRAFT_1_20_3, false),
+        map(0x1A, MINECRAFT_1_20_5, false));
+      serverbound.register(PlayerPositionIdlePacket.class, PlayerPositionIdlePacket::new,
        map(0x03, MINECRAFT_1_7_2, false),
        map(0x0F, MINECRAFT_1_9, false),
        map(0x0D, MINECRAFT_1_12, false),
@@ -336,7 +461,8 @@ public enum FallbackPacketRegistry {
        map(0x16, MINECRAFT_1_19_3, false),
        map(0x17, MINECRAFT_1_19_4, false),
        map(0x19, MINECRAFT_1_20_2, false),
-        map(0x1A, MINECRAFT_1_20_3, false));
+        map(0x1A, MINECRAFT_1_20_3, false),
+        map(0x1D, MINECRAFT_1_20_5, false));
      serverbound.register(TransactionPacket.class, TransactionPacket::new,
        map(0x0F, MINECRAFT_1_7_2, false),
        map(0x05, MINECRAFT_1_9, false),
@@ -350,7 +476,8 @@ public enum FallbackPacketRegistry {
        map(0x1F, MINECRAFT_1_19_3, false),
        map(0x20, MINECRAFT_1_19_4, false),
        map(0x23, MINECRAFT_1_20_2, false),
-        map(0x24, MINECRAFT_1_20_3, false));
+        map(0x24, MINECRAFT_1_20_3, false),
+        map(0x27, MINECRAFT_1_20_5, false));
    }
  };

@@ -400,7 +527,7 @@ 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, from);
+        final ProtocolVersion to = getProtocolVersion(current, next);

        for (final ProtocolVersion protocol : EnumSet.range(from, to)) {
          if (protocol == to && next != current) {
@@ -409,19 +536,18 @@ public enum FallbackPacketRegistry {

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

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

          if (registry.packetClassToId.containsKey(clazz)) {
            throw new IllegalArgumentException(clazz.getSimpleName()
-              + " is already registered for version " + registry.version);
+              + " is already registered for version " + registry.protocolVersion);
          }

          if (!current.encodeOnly) {
@@ -434,23 +560,19 @@ public enum FallbackPacketRegistry {

    @NotNull
    private static ProtocolVersion getProtocolVersion(final @NotNull PacketMapping current,
-                                                      final @NotNull PacketMapping next,
-                                                      final @NotNull ProtocolVersion from) {
+                                                      final @NotNull PacketMapping next) {
      return current == next ? LATEST_VERSION : next.protocolVersion;
    }
  }

+  @RequiredArgsConstructor(access = AccessLevel.PRIVATE)
  public static class ProtocolRegistry {
-    private final ProtocolVersion version;
+    private final ProtocolVersion protocolVersion;
    private final IntObjectMap<Supplier<? extends FallbackPacket>> packetIdToSupplier =
      new IntObjectHashMap<>(16, 0.5f);
    private final Map<Class<? extends FallbackPacket>, Integer> packetClassToId =
      new HashMap<>(16, 0.5f);

-    ProtocolRegistry(final ProtocolVersion version) {
-      this.version = version;
-    }
-
    public FallbackPacket createPacket(final int id) {
      final Supplier<? extends FallbackPacket> supplier = packetIdToSupplier.get(id);

@@ -478,16 +600,16 @@ public enum FallbackPacketRegistry {

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

  private static @NotNull PacketMapping map(final int id,
-                                            final ProtocolVersion version,
+                                            final ProtocolVersion protocolVersion,
                                            final boolean encodeOnly) {
-    return new PacketMapping(id, version, encodeOnly);
+    return new PacketMapping(id, protocolVersion, encodeOnly);
  }
 }
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2023-2024 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 lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.ID_TO_PROTOCOL_CONSTANT;
+
+// Mostly taken from
+// https://github.com/Nan1t/NanoLimbo/blob/main/src/main/java/ua/nanit/limbo/protocol/PacketSnapshot.java
+@Getter
+public final class FallbackPacketSnapshot implements FallbackPacket {
+  private final Map<Integer, Integer> mappings = new HashMap<>(ID_TO_PROTOCOL_CONSTANT.size());
+  private final Map<Integer, byte[]> cachedBytes = new HashMap<>(ID_TO_PROTOCOL_CONSTANT.size());
+  private final FallbackPacket originalPacket;
+
+  public FallbackPacketSnapshot(final @NotNull FallbackPacket originalPacket) {
+    final Map<Integer, Integer> hashes = new HashMap<>(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 {
+        originalPacket.encode(byteBuf, protocolVersion);
+      } catch (Exception exception) {
+        Sonar.get().getLogger().error("Could not encode packet {} for version {}: {}",
+          originalPacket.toString(), protocolVersion, exception);
+        break;
+      }
+
+      // Make sure we don't unnecessarily fill the RAM
+      final int protocol = protocolVersion.getProtocol();
+      final int hash = byteBuf.hashCode();
+      final int hashed = hashes.getOrDefault(hash, -1);
+      if (hashed != -1) {
+        mappings.put(protocol, hashed);
+      } else {
+        hashes.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);
+      }
+      // Make sure to release the buffer to avoid memory leaks
+      byteBuf.release();
+    }
+    this.originalPacket = originalPacket;
+  }
+
+  @Override
+  public void encode(final @NotNull ByteBuf byteBuf,
+                     final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    final int hash = mappings.get(protocolVersion.getProtocol());
+    final byte[] bytes = cachedBytes.get(hash);
+
+    if (bytes != null) {
+      byteBuf.writeBytes(bytes);
+    } else {
+      Sonar.get().getLogger().error("Could not find cached packet {} for version {}",
+        toString(), protocolVersion);
+      throw new IllegalStateException("Unable to find cached packet. Contact the developer!");
+    }
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -20,39 +20,56 @@ package xyz.jonesdev.sonar.common.fallback.protocol;
 import lombok.experimental.UtilityClass;
 import xyz.jonesdev.sonar.api.Sonar;
 import xyz.jonesdev.sonar.api.config.SonarConfiguration;
-import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockPosition;
 import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockType;
-import xyz.jonesdev.sonar.common.fallback.protocol.block.ChangedBlock;
-import xyz.jonesdev.sonar.common.fallback.protocol.map.MapInfoPreparer;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.config.FinishConfigurationPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.packets.config.RegistryDataPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockUpdate;
+import xyz.jonesdev.sonar.common.fallback.protocol.captcha.CaptchaPreparer;
+import xyz.jonesdev.sonar.common.fallback.protocol.dimension.DimensionRegistry;
+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 java.util.UUID;
+import java.util.concurrent.ThreadLocalRandom;
+
@UtilityClass
 public class FallbackPreparer {

+  // LoginSuccess
+  public final FallbackPacket LOGIN_SUCCESS = new FallbackPacketSnapshot(new LoginSuccessPacket(new UUID(1L, 1L), "Sonar"));
  // Abilities
-  public final FallbackPacket DEFAULT_ABILITIES = new ClientAbilitiesPacket(0x00, 0f, 0f);
-  public final FallbackPacket CAPTCHA_ABILITIES = new ClientAbilitiesPacket(0x02, 0f, 0f);
+  public final FallbackPacket DEFAULT_ABILITIES = new FallbackPacketSnapshot(new ClientAbilitiesPacket(0x00, 0f, 0f));
+  public final FallbackPacket CAPTCHA_ABILITIES = new FallbackPacketSnapshot(new ClientAbilitiesPacket(0x02, 0f, 0f));
+  public final FallbackPacket CAPTCHA_ABILITIES_BEDROCK = new FallbackPacketSnapshot(new ClientAbilitiesPacket(0x06, 0f, 0f));
  // Chunks
-  public final FallbackPacket EMPTY_CHUNK_DATA = new ChunkDataPacket(0, 0);
+  public final FallbackPacket EMPTY_CHUNK_DATA = new FallbackPacketSnapshot(new ChunkDataPacket(0, 0));
  // Finish Configuration
-  public final FallbackPacket FINISH_CONFIGURATION = new FinishConfigurationPacket();
+  public final FallbackPacket FINISH_CONFIGURATION = new FinishConfigurationPacket(); // No snapshot needed because it's empty either way
  // Synchronize Registry
-  public final FallbackPacket REGISTRY_SYNC = new RegistryDataPacket();
+  public final FallbackPacket REGISTRY_SYNC_LEGACY = new FallbackPacketSnapshot(new RegistryDataPacket(DimensionRegistry.CODEC_1_20, null, null));
+  public final FallbackPacket[] REGISTRY_SYNC_1_20_5 = RegistryDataPacket.of(DimensionRegistry.CODEC_1_20);
  // Keep Alive
-  public final FallbackPacket CAPTCHA_KEEP_ALIVE = new KeepAlivePacket(0L);
+  public final FallbackPacket CAPTCHA_KEEP_ALIVE = new FallbackPacketSnapshot(new KeepAlivePacket(-1337L));
  // Game Event (1.20.3+)
-  public final FallbackPacket START_WRITING_CHUNKS = new GameEventPacket(13, 0);
+  public final FallbackPacket START_WRITING_CHUNKS = new FallbackPacketSnapshot(new GameEventPacket(13, 0));
  // Chat
  public FallbackPacket enterCodeMessage;
  public FallbackPacket incorrectCaptcha;
  // JoinGame
+  public final int PLAYER_ENTITY_ID = ThreadLocalRandom.current().nextInt(10);
  public FallbackPacket joinGame;
  // Update Section Blocks
  public FallbackPacket updateSectionBlocks;
+  // Player Info
+  public final FallbackPacket PLAYER_INFO = new FallbackPacketSnapshot(new PlayerInfoPacket(
+    "", new UUID(1L, 1L), 2));
  // Default Spawn Position
-  public FallbackPacket dynamicSpawnPosition;
+  public FallbackPacket defaultSpawnPosition;
+  // Spawn Position
+  public final int TELEPORT_ID = ThreadLocalRandom.current().nextInt();
+  public FallbackPacket spawnPosition;
+  // Transfer packet
+  public static FallbackPacket transferToOrigin;

  // Disconnect messages
  public FallbackPacket blacklisted;
@@ -61,6 +78,12 @@ public class FallbackPreparer {
  public FallbackPacket reconnectedTooFast;
  public FallbackPacket protocolBlacklisted;
  public FallbackPacket invalidUsername;
+  public FallbackPacket tooManyOnlinePerIP;
+
+  // Vehicle
+  public FallbackPacket removeEntities;
+  public static FallbackPacket setPassengers;
+  public static final int VEHICLE_ENTITY_ID = PLAYER_ENTITY_ID + 1;

  // Collisions
  public final int BLOCKS_PER_ROW = 8; // 8 * 8 = 64 (protocol maximum)
@@ -69,26 +92,32 @@ public class FallbackPreparer {
  public final int DEFAULT_Y_COLLIDE_POSITION = 255; // 255 is the maximum Y position allowed

  // Captcha position
-  public final FallbackPacket CAPTCHA_POSITION = new PlayerPositionLookPacket(
-    SPAWN_X_POSITION, 1337, SPAWN_Z_POSITION, 0f, 90f, 0, false);
-  public final FallbackPacket CAPTCHA_SPAWN_POSITION = new DefaultSpawnPositionPacket(
-    SPAWN_X_POSITION, 1337, SPAWN_Z_POSITION);
+  public final FallbackPacket CAPTCHA_POSITION = new FallbackPacketSnapshot(new PlayerPositionLookPacket(
+    SPAWN_X_POSITION, 1337, SPAWN_Z_POSITION, 0f, 90f, 0, false));
+  public final FallbackPacket CAPTCHA_SPAWN_POSITION = new FallbackPacketSnapshot(new DefaultSpawnPositionPacket(
+    SPAWN_X_POSITION, 1337, SPAWN_Z_POSITION));

-  // Blocks
-  private final ChangedBlock[] CHANGED_BLOCKS = new ChangedBlock[BLOCKS_PER_ROW * BLOCKS_PER_ROW];
+  // Platform
  public BlockType blockType = BlockType.BARRIER;
-
  public int maxMovementTick, dynamicSpawnYPosition;
  public double[] preparedCachedYMotions;
  public double maxFallDistance;

+  // CAPTCHA
+  public final CaptchaPreparer MAP_INFO_PREPARER = new CaptchaPreparer();
+
+  // XP packets
+  public FallbackPacket[] xpCountdown;
+
  public void prepare() {
-    joinGame = new JoinGamePacket(1,
+    // Prepare JoinGame packet
+    joinGame = new JoinGamePacket(PLAYER_ENTITY_ID,
      Sonar.get().getConfig().getVerification().getGravity().getGamemode().getId(),
      0, false, 0,
      true, false, false,
      new String[]{"minecraft:overworld"}, "minecraft:overworld");

+    // Prepare cached motions for the gravity check
    maxFallDistance = 0;
    maxMovementTick = Sonar.get().getConfig().getVerification().getGravity().getMaxMovementTicks();
    preparedCachedYMotions = new double[maxMovementTick + 8];
@@ -101,40 +130,65 @@ public class FallbackPreparer {

    // Set the dynamic block and collide Y position based on the maximum fall distance
    dynamicSpawnYPosition = DEFAULT_Y_COLLIDE_POSITION + (int) Math.ceil(maxFallDistance);
-    dynamicSpawnPosition = new DefaultSpawnPositionPacket(SPAWN_X_POSITION, dynamicSpawnYPosition, SPAWN_Z_POSITION);
+    defaultSpawnPosition = new FallbackPacketSnapshot(new DefaultSpawnPositionPacket(
+      SPAWN_X_POSITION, dynamicSpawnYPosition, SPAWN_Z_POSITION));
+    spawnPosition = new FallbackPacketSnapshot(new PlayerPositionLookPacket(
+      SPAWN_X_POSITION, dynamicSpawnYPosition, SPAWN_Z_POSITION,
+      0, -90, TELEPORT_ID, false));

    // Prepare collision platform positions
+    final BlockUpdate[] changedBlocks = 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 BlockPosition position = new BlockPosition(
+        final BlockUpdate.BlockPosition position = new BlockUpdate.BlockPosition(
          x + (BLOCKS_PER_ROW / 2),
          DEFAULT_Y_COLLIDE_POSITION,
          z + (BLOCKS_PER_ROW / 2),
          0, 0);
-        CHANGED_BLOCKS[index++] = new ChangedBlock(position, blockType);
+        changedBlocks[index++] = new BlockUpdate(position, blockType);
      }
    }

-    // Prepare UpdateSectionBlocks packet
-    updateSectionBlocks = new UpdateSectionBlocksPacket(0, 0, CHANGED_BLOCKS);
+    updateSectionBlocks = new FallbackPacketSnapshot(new UpdateSectionBlocksPacket(0, 0, changedBlocks));

    // Prepare disconnect packets during login
-    blacklisted = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getBlacklisted(), true);
-    alreadyVerifying = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getAlreadyVerifying(), true);
-    alreadyQueued = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getAlreadyQueued(), true);
-    protocolBlacklisted = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getProtocolBlacklisted(), true);
-    reconnectedTooFast = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getTooFastReconnect(), true);
-    invalidUsername = DisconnectPacket.create(Sonar.get().getConfig().getVerification().getInvalidUsername(), true);
+    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
+    transferToOrigin = new FallbackPacketSnapshot(new TransferPacket(
+      Sonar.get().getConfig().getVerification().getTransfer().getHost(),
+      Sonar.get().getConfig().getVerification().getTransfer().getPort()));
+
+    // Prepare packets for the vehicle check
+    removeEntities = new FallbackPacketSnapshot(new RemoveEntitiesPacket(VEHICLE_ENTITY_ID));
+    setPassengers = new FallbackPacketSnapshot(new SetPassengersPacket(VEHICLE_ENTITY_ID, PLAYER_ENTITY_ID));

-    // Precompute captcha answers
    if (Sonar.get().getConfig().getVerification().getMap().getTiming() != SonarConfiguration.Verification.Timing.NEVER
      || Sonar.get().getConfig().getVerification().getGravity().isCaptchaOnFail()) {
-      enterCodeMessage = new UniversalChatPacket(Sonar.get().getConfig().getVerification().getMap().getEnterCode(), UniversalChatPacket.SYSTEM_TYPE);
-      incorrectCaptcha = new UniversalChatPacket(
-        Sonar.get().getConfig().getVerification().getMap().getFailedCaptcha(), UniversalChatPacket.SYSTEM_TYPE);
+      // Prepare CAPTCHA messages
+      enterCodeMessage = new FallbackPacketSnapshot(new UniversalChatPacket(
+        Sonar.get().getConfig().getVerification().getMap().getEnterCode(), UniversalChatPacket.SYSTEM_TYPE));
+      incorrectCaptcha = new FallbackPacketSnapshot(new UniversalChatPacket(
+        Sonar.get().getConfig().getVerification().getMap().getFailedCaptcha(), UniversalChatPacket.SYSTEM_TYPE));

-      MapInfoPreparer.prepare();
+      // 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, i));
+      }
+
+      // Prepare CAPTCHA answers
+      MAP_INFO_PREPARER.prepare();
    }
  }
 }
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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 lombok.ToString;
-
-@Getter
-@ToString
-@RequiredArgsConstructor
-public final class BlockPosition {
-  private final int x, y, z;
-  private final int chunkX, chunkZ;
-}
@@ -78,6 +78,7 @@ public enum BlockType {
        return 10225;
      case MINECRAFT_1_20_2:
      case MINECRAFT_1_20_3:
+      case MINECRAFT_1_20_5:
        return 10366;
    }
  }, 1D);
@@ -18,15 +18,17 @@
 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 ChangedBlock {
+public final class BlockUpdate {
  private final @NotNull BlockPosition position;
  private final BlockType type;
  private final int legacyBlockState, blockState;

-  public ChangedBlock(final @NotNull BlockPosition position, final BlockType type) {
+  public BlockUpdate(final @NotNull BlockPosition position, final BlockType type) {
    this.position = position;
    this.type = type;
    final int x = position.getX() - (position.getChunkX() << 4);
@@ -35,4 +37,12 @@ public final class ChangedBlock {
    this.legacyBlockState = x << 12 | z << 8 | y;
    this.blockState = x << 8 | z << 4 | y - ((y >> 4) << 4);
  }
+
+  @Getter
+  @ToString
+  @RequiredArgsConstructor
+  public static final class BlockPosition {
+    private final int x, y, z;
+    private final int chunkX, chunkZ;
+  }
 }
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2023-2024 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.captcha;
+
+import org.jetbrains.annotations.Nullable;
+import xyz.jonesdev.capja.SimpleCaptchaGenerator;
+import xyz.jonesdev.capja.filter.SimpleRippleFilter;
+import xyz.jonesdev.capja.filter.SimpleScratchFilter;
+import xyz.jonesdev.capja.libs.jhlabs.image.AbstractBufferedImageOp;
+import xyz.jonesdev.capja.libs.jhlabs.image.BumpFilter;
+import xyz.jonesdev.capja.libs.jhlabs.image.SmearFilter;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.config.SonarConfiguration;
+import xyz.jonesdev.sonar.api.timer.SystemTimer;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadLocalRandom;
+
+public final class CaptchaPreparer {
+  private static final ExecutorService PREPARATION_SERVICE = Executors.newSingleThreadExecutor();
+  private static final Random RANDOM = new Random();
+
+  private MapCaptchaInfo[] cached;
+  private int preparedAmount;
+
+  public void prepare() {
+    // Make sure we're not preparing when Sonar is already preparing answers
+    if (cached != null && preparedAmount != cached.length) return;
+    preparedAmount = 0;
+
+    final SystemTimer timer = new SystemTimer();
+    Sonar.get().getLogger().info("Asynchronously preparing CAPTCHA answers...");
+    Sonar.get().getLogger().info("Players will be able to join even if the preparation isn't finished");
+
+    // Prepare cache
+    final SonarConfiguration.Verification.Map config = Sonar.get().getConfig().getVerification().getMap();
+    cached = new MapCaptchaInfo[config.getPrecomputeAmount()];
+
+    // Prepare everything asynchronously
+    PREPARATION_SERVICE.execute(() -> {
+      // Create the images using capja
+      final @Nullable File backgroundImage = Sonar.get().getConfig().getVerification().getMap().getBackgroundImage();
+      final SimpleCaptchaGenerator generator = new SimpleCaptchaGenerator(128, 128, backgroundImage);
+      final char[] dictionary = config.getDictionary().toCharArray();
+
+      // Prepare the filters for the CAPTCHA
+      final List<AbstractBufferedImageOp> filters = new ArrayList<>();
+      if (Sonar.get().getConfig().getVerification().getMap().isScratches()) {
+        filters.add(new SimpleScratchFilter(5));
+      }
+      if (Sonar.get().getConfig().getVerification().getMap().isRipple()) {
+        final SimpleRippleFilter rippleFilter = new SimpleRippleFilter();
+        rippleFilter.setXAmplitude(0);
+        float yAmplitude = 10 - ThreadLocalRandom.current().nextInt(20);
+        if (Math.abs(yAmplitude) < 3) {
+          yAmplitude = yAmplitude >= 0 ? 3 : -3;
+        }
+        rippleFilter.setYAmplitude(yAmplitude);
+        filters.add(rippleFilter);
+      }
+      if (Sonar.get().getConfig().getVerification().getMap().getDistortion().isEnabled()) {
+        final SmearFilter smearFilter = new SmearFilter();
+        smearFilter.setShape(Sonar.get().getConfig().getVerification().getMap().getDistortion().getShape());
+        smearFilter.setMix(Sonar.get().getConfig().getVerification().getMap().getDistortion().getMix());
+        smearFilter.setDensity(Sonar.get().getConfig().getVerification().getMap().getDistortion().getDensity());
+        smearFilter.setDistance(Sonar.get().getConfig().getVerification().getMap().getDistortion().getDistance());
+        filters.add(smearFilter);
+      }
+      if (Sonar.get().getConfig().getVerification().getMap().isBump()) {
+        filters.add(new BumpFilter());
+      }
+
+      for (preparedAmount = 0; preparedAmount < config.getPrecomputeAmount(); preparedAmount++) {
+        if (!Sonar.get().getConfig().getVerification().getMap().isAutoColor()) {
+          // Generate a random gradient color if automatic coloring is disabled
+          final Color color0 = Color.getHSBColor((float) Math.random(), 1, 1);
+          final Color color1 = Color.getHSBColor((float) Math.random(), 1, 0.5f);
+          final GradientPaint gradient = new GradientPaint(0, 0, color0,
+            generator.getWidth(), generator.getHeight(), color1);
+          generator.setGradient(gradient);
+        }
+        // Generate CAPTCHA answer
+        final char[] answer = new char[5];
+        for (int j = 0; j < answer.length; j++) {
+          answer[j] = dictionary[ThreadLocalRandom.current().nextInt(dictionary.length)];
+        }
+        final BufferedImage image = generator.createImage(answer, filters);
+        // Convert and cache converted Minecraft map bytes
+        final int[] buffer = MapColorPalette.getBufferFromImage(image);
+        cached[preparedAmount] = new MapCaptchaInfo(new String(answer), buffer);
+      }
+
+      Sonar.get().getLogger().info("Finished preparing {} CAPTCHA answers ({}s)!", preparedAmount, timer);
+    });
+  }
+
+  public boolean isCaptchaAvailable() {
+    return cached != null && cached[0] != null;
+  }
+
+  public MapCaptchaInfo getRandomCaptcha() {
+    // Give the player a random CAPTCHA out of the ones that we've already prepared
+    return cached[RANDOM.nextInt(preparedAmount)];
+  }
+}
@@ -15,7 +15,7 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

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

 import lombok.RequiredArgsConstructor;
 import org.jetbrains.annotations.NotNull;
@@ -25,7 +25,7 @@ import java.util.function.Function;

@SuppressWarnings("unused")
@RequiredArgsConstructor
-public enum ItemMapType {
+public enum ItemType {
  FILLED_MAP(protocolVersion -> {
    // Useful resources:
    // - https://github.com/PrismarineJS/minecraft-data/blob/master/data/pc/
@@ -72,6 +72,8 @@ public enum ItemMapType {
        return 941;
      case MINECRAFT_1_20_3:
        return 979;
+      case MINECRAFT_1_20_5:
+        return 982;
    }
  });

@@ -15,51 +15,50 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

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

 import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.FallbackUser;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
 import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.MapDataPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_8;

@Getter
-public final class PreparedMapInfo {
-  public static final int DIMENSIONS = (int) Math.pow(2, 7);
-  public static final int SCALE = DIMENSIONS * DIMENSIONS;
+public final class MapCaptchaInfo {
+  private final String answer;

-  private final MapInfo info;
-  private final MapDataPacket[] legacy;
-  private final MapDataPacket modern;
+  private final FallbackPacket[] legacy;
+  private final FallbackPacket modern;

-  public PreparedMapInfo(final String answer,
-                         final int columns, final int rows,
-                         final byte @NotNull [] buffer) {
-    this.info = new MapInfo(answer, columns, rows, 0, 0, buffer);
+  public MapCaptchaInfo(final @NotNull String answer, final int @NotNull [] buffer) {
+    this.answer = answer;

    // Prepare 1.7 map data using a grid
-    final byte[][] grid = new byte[DIMENSIONS][DIMENSIONS];
+    final int[][] grid = new int[128][128];
    for (int i = 0; i < buffer.length; i++) {
-      final byte buf = buffer[i];
+      final int buf = buffer[i];
      grid[i & Byte.MAX_VALUE][i >> 7] = buf;
    }
-    this.legacy = new MapDataPacket[grid.length];
+    this.legacy = new FallbackPacket[grid.length];
    for (int i = 0; i < grid.length; i++) {
-      this.legacy[i] = new MapDataPacket(new MapInfo(answer, DIMENSIONS, DIMENSIONS, i, 0, grid[i]));
+      this.legacy[i] = new MapDataPacket(grid[i], i, 0);
    }

    // Prepare 1.8+ map data
-    this.modern = new MapDataPacket(info);
+    this.modern = new MapDataPacket(buffer, 0, 0);
  }

-  public void write(final @NotNull FallbackUser user) {
+  public void delayedWrite(final @NotNull FallbackUser user) {
    if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) < 0) {
-      for (final MapDataPacket data : legacy) {
-        user.delayedWrite(data);
+      // 1.7.2-1.7.10 needs separate packets for each axis
+      for (final FallbackPacket legacyPacket : legacy) {
+        user.delayedWrite(legacyPacket);
      }
-    } else {
-      user.delayedWrite(modern);
+      return;
    }
+    // Send modern packet
+    user.delayedWrite(modern);
  }
 }
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2023-2024 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.captcha;
+
+import lombok.experimental.UtilityClass;
+import org.jetbrains.annotations.NotNull;
+
+import java.awt.image.BufferedImage;
+
+@UtilityClass
+public class MapColorPalette {
+  // https://minecraft.wiki/w/Map_item_format#Full_color_tables
+  public static final int[] COLOR_MAP = {
+    -16777216,
+    -16777216,
+    -16777216,
+    -16777216,
+    -10912473,
+    -9594576,
+    -8408520,
+    -12362211,
+    -5331853,
+    -2766452,
+    -530013,
+    -8225962,
+    -7566196,
+    -5526613,
+    -3684409,
+    -9868951,
+    -4980736,
+    -2359296,
+    -65536,
+    -7929856,
+    -9408332,
+    -7697700,
+    -6250241,
+    -11250553,
+    -9079435,
+    -7303024,
+    -5789785,
+    -10987432,
+    -16754944,
+    -16750080,
+    -16745472,
+    -16760576,
+    -4934476,
+    -2302756,
+    -1,
+    -7895161,
+    -9210239,
+    -7499618,
+    -5986120,
+    -11118495,
+    -9810890,
+    -8233406,
+    -6853299,
+    -11585240,
+    -11579569,
+    -10461088,
+    -9408400,
+    -12895429,
+    -13816396,
+    -13158436,
+    -12566273,
+    -14605945,
+    -10202062,
+    -8690114,
+    -7375032,
+    -11845850,
+    -4935252,
+    -2303533,
+    -779,
+    -7895679,
+    -6792924,
+    -4559572,
+    -2588877,
+    -9288933,
+    -8571496,
+    -6733382,
+    -5092136,
+    -10606478,
+    -12030824,
+    -10976070,
+    -10053160,
+    -13217422,
+    -6184668,
+    -3816148,
+    -1710797,
+    -8816357,
+    -10907631,
+    -9588715,
+    -8401895,
+    -12358643,
+    -5613196,
+    -3117682,
+    -884827,
+    -8371369,
+    -13290187,
+    -12500671,
+    -11776948,
+    -14145496,
+    -9671572,
+    -8092540,
+    -6710887,
+    -11447983,
+    -13280916,
+    -12489340,
+    -11763815,
+    -14138543,
+    -10933123,
+    -9619815,
+    -8437838,
+    -12377762,
+    -14404227,
+    -13876839,
+    -13415246,
+    -14997410,
+    -12045020,
+    -10993364,
+    -10073037,
+    -13228005,
+    -12035804,
+    -10982100,
+    -10059981,
+    -13221093,
+    -9690076,
+    -8115156,
+    -6737101,
+    -11461861,
+    -15658735,
+    -15395563,
+    -15132391,
+    -15921907,
+    -5199818,
+    -2634430,
+    -332211,
+    -8094168,
+    -12543338,
+    -11551561,
+    -10691627,
+    -13601936,
+    -13346124,
+    -12620068,
+    -11894529,
+    -14204025,
+    -16738008,
+    -16729294,
+    -16721606,
+    -16748002,
+    -10798046,
+    -9483734,
+    -8301007,
+    -12309223,
+    -11599616,
+    -10485504,
+    -9436672,
+    -12910336,
+  };
+
+  public int[] getBufferFromImage(final @NotNull BufferedImage bufferedImage) {
+    final int[] buffer = new int[128 * 128];
+
+    bufferedImage.getRGB(0, 0,
+      bufferedImage.getWidth(), bufferedImage.getHeight(),
+      buffer, 0, bufferedImage.getWidth());
+
+    for (int i = 0; i < buffer.length; i++) {
+      buffer[i] = mapColorToMinecraft(buffer[i]);
+    }
+    return buffer;
+  }
+
+  private byte mapColorToMinecraft(final int argb) {
+    int minDistance = Integer.MAX_VALUE;
+    byte closestIndex = 0;
+    for (int i = 0; i < COLOR_MAP.length; i++) {
+      final byte index = (byte) (i < 128 ? i : -129 + (i - 127));
+      final int distance = calculateColorDistance(argb, COLOR_MAP[i]);
+      if (distance < minDistance) {
+        minDistance = distance;
+        closestIndex = index;
+      }
+    }
+    return closestIndex;
+  }
+
+  private int calculateColorDistance(final int argb0, final int argb1) {
+    final int red0 = (argb0 >> 16) & 0xFF;
+    final int green0 = (argb0 >> 8) & 0xFF;
+    final int blue0 = argb0 & 0xFF;
+    final int red1 = (argb1 >> 16) & 0xFF;
+    final int green1 = (argb1 >> 8) & 0xFF;
+    final int blue1 = argb1 & 0xFF;
+    // Color distance metric (e.g. squared Euclidean distance)
+    return (red0 - red1) * (red0 - red1)
+      + (green0 - green1) * (green0 - green1)
+      + (blue0 - blue1) * (blue0 - blue1);
+  }
+}
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2023-2024 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.RequiredArgsConstructor;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+
+import java.util.function.Function;
+
+@RequiredArgsConstructor
+public enum EntityType {
+  BOAT(protocolVersion -> {
+    // Useful resources:
+    // - https://github.com/PrismarineJS/minecraft-data/blob/master/data/pc/
+    // - https://pokechu22.github.io/Burger/1.20.4.html
+    switch (protocolVersion) {
+      default:
+      case MINECRAFT_1_7_2:
+      case MINECRAFT_1_7_6:
+      case MINECRAFT_1_8:
+      case MINECRAFT_1_9:
+      case MINECRAFT_1_9_1:
+      case MINECRAFT_1_9_2:
+      case MINECRAFT_1_9_4:
+      case MINECRAFT_1_10:
+      case MINECRAFT_1_11:
+      case MINECRAFT_1_11_1:
+      case MINECRAFT_1_12:
+      case MINECRAFT_1_12_1:
+      case MINECRAFT_1_12_2:
+      case MINECRAFT_1_13:
+      case MINECRAFT_1_13_1:
+      case MINECRAFT_1_13_2:
+        return 1;
+      case MINECRAFT_1_14:
+      case MINECRAFT_1_14_1:
+      case MINECRAFT_1_14_2:
+      case MINECRAFT_1_14_3:
+      case MINECRAFT_1_14_4:
+        return 5;
+      case MINECRAFT_1_15:
+      case MINECRAFT_1_15_1:
+      case MINECRAFT_1_15_2:
+      case MINECRAFT_1_16:
+      case MINECRAFT_1_16_1:
+      case MINECRAFT_1_16_2:
+      case MINECRAFT_1_16_3:
+      case MINECRAFT_1_16_4:
+        return 6;
+      case MINECRAFT_1_17:
+      case MINECRAFT_1_17_1:
+      case MINECRAFT_1_18:
+      case MINECRAFT_1_18_2:
+        return 7;
+      case MINECRAFT_1_19:
+      case MINECRAFT_1_19_1:
+      case MINECRAFT_1_19_3:
+        return 8;
+      case MINECRAFT_1_19_4:
+      case MINECRAFT_1_20:
+      case MINECRAFT_1_20_2:
+      case MINECRAFT_1_20_3:
+        return 9;
+      case MINECRAFT_1_20_5:
+        return 10;
+    }
+  });
+
+  private final Function<ProtocolVersion, Integer> function;
+
+  public int getId(final @NotNull ProtocolVersion protocolVersion) {
+    return function.apply(protocolVersion);
+  }
+}
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.map;
-
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-
-@Getter
-@RequiredArgsConstructor
-public final class MapInfo {
-  private final String answer;
-  private final int columns, rows;
-  private final int x, y;
-  private final byte[] buffer;
-}
@@ -1,248 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.map;
-
-import lombok.Getter;
-import lombok.experimental.UtilityClass;
-import xyz.jonesdev.sonar.api.Sonar;
-import xyz.jonesdev.sonar.api.config.SonarConfiguration;
-import xyz.jonesdev.sonar.api.timer.SystemTimer;
-
-import java.awt.*;
-import java.awt.font.FontRenderContext;
-import java.awt.font.GlyphVector;
-import java.awt.geom.AffineTransform;
-import java.awt.image.BufferedImage;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Random;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-
-import static java.awt.Font.*;
-import static xyz.jonesdev.sonar.common.fallback.protocol.map.PreparedMapInfo.DIMENSIONS;
-
-@UtilityClass
-public class MapInfoPreparer {
-  private final Random RANDOM = new Random();
-
-  private final ExecutorService PREPARATION_SERVICE = Executors.newSingleThreadExecutor();
-
-  private final int[] FONT_STYLES = new int[]{
-    PLAIN,
-    BOLD,
-    ITALIC,
-    ITALIC | BOLD
-  };
-
-  private final int[][] COLOR_PALETTE = new int[][]{
-    new int[]{ // Blue
-      48,
-      49,
-      50,
-      51
-    },
-    new int[]{ // Orange
-      60,
-      61,
-      62,
-      63,
-    },
-    new int[]{ // Green
-      4,
-      28,
-      29,
-      30,
-    },
-    new int[]{ // Black
-      27,
-      45,
-      46,
-      47,
-    },
-    new int[]{ // Red
-      16,
-      17,
-      18,
-      19
-    }
-  };
-
-  private PreparedMapInfo[] cached;
-  @Getter
-  private int preparedCAPTCHAs;
-  private boolean currentlyPreparing;
-
-  public PreparedMapInfo getRandomCaptcha() {
-    return cached[RANDOM.nextInt(preparedCAPTCHAs)];
-  }
-
-  public void prepare() {
-    final SystemTimer timer = new SystemTimer();
-    Sonar.get().getLogger().info("Precomputing map captcha answers...");
-
-    // Make sure we're not running into concurrency issues
-    if (currentlyPreparing) {
-      Sonar.get().getLogger().warn("Did not precompute map captcha answers as another task is running.");
-      return;
-    }
-
-    // Reset all statistics
-    preparedCAPTCHAs = 0;
-    currentlyPreparing = true;
-    final SonarConfiguration.Verification.Map config = Sonar.get().getConfig().getVerification().getMap();
-    cached = null;
-    cached = new PreparedMapInfo[config.getPrecomputeAmount()];
-
-    // Prepare fonts from config
-    final String dictionary = config.getDictionary();
-    final List<String> fonts = config.getFonts();
-    if (fonts.isEmpty()) {
-      Sonar.get().getLogger().warn("No fonts found, using fallback font...");
-      fonts.add(DIALOG);
-    }
-    final String[] fontTypes = fonts.toArray(new String[0]);
-
-    // Prepare distortions values from config
-    final double distortionsFactorX = config.getDistortionsFactorX();
-    final double distortionsFactorY = config.getDistortionsFactorY();
-    final double halfDistortionsFactorX = distortionsFactorX / 2D;
-    final double halfDistortionsFactorY = distortionsFactorY / 2D;
-
-    for (int _i = 0; _i < cached.length; _i++) {
-      final int currentIndex = _i;
-      final byte[] buffer = new byte[PreparedMapInfo.SCALE];
-      PREPARATION_SERVICE.execute(() -> {
-        // Create image
-        final BufferedImage image = new BufferedImage(DIMENSIONS, DIMENSIONS, BufferedImage.TYPE_3BYTE_BGR);
-        final Graphics2D graphics = (Graphics2D) image.getGraphics();
-        try {
-          // Create random font
-          final String fontType = fontTypes[RANDOM.nextInt(fontTypes.length)];
-          final int fontStyle = FONT_STYLES[RANDOM.nextInt(FONT_STYLES.length)];
-          final int fontSize = 27
-            + (config.isRandomizeFontSize()
-            ? RANDOM.nextInt(6) - 2 : 5);
-          @SuppressWarnings("all") final Font answerFont = new Font(fontType, fontStyle, fontSize);
-          graphics.setFont(answerFont);
-
-          // Build answer to the captcha
-          final StringBuilder answerBuilder = new StringBuilder();
-          for (int _j = 0; _j < 5; _j++) {
-            answerBuilder.append(dictionary.charAt(RANDOM.nextInt(dictionary.length())));
-          }
-          final String answer = answerBuilder.toString();
-
-          // Calculate text position
-          final int stringWidth = graphics.getFontMetrics().stringWidth(answer);
-          final int halfWidth = image.getWidth() / 2;
-          final int halfHeight = image.getHeight() / 2;
-          final int spacing = 5;
-          double _x = halfWidth - stringWidth / 2f - spacing;
-          double _y = halfHeight + fontSize / 3f;
-
-          // Draw each character one by one
-          final FontRenderContext fontRenderContext = graphics.getFontRenderContext();
-          for (final char c : answer.toCharArray()) {
-            // Randomize x and y
-            if (config.isRandomizePositions()) {
-              _y += RANDOM.nextInt(8) - 4;
-            }
-
-            // Apply random distortion
-            final double distortionFactorX = RANDOM.nextDouble() * distortionsFactorX - halfDistortionsFactorX;
-            final double distortionFactorY = RANDOM.nextDouble() * distortionsFactorY - halfDistortionsFactorY;
-
-            // Create a GlyphVector for the character
-            final String character = String.valueOf(c);
-            final GlyphVector glyphVector = graphics.getFont().createGlyphVector(fontRenderContext, character);
-
-            // Apply the distortion to the GlyphVector using AffineTransform
-            final AffineTransform transform = AffineTransform.getTranslateInstance(_x, _y);
-            transform.shear(distortionFactorX, distortionFactorY);
-            final Shape distortedCharacter = glyphVector.getOutline();
-            final Shape distorted = transform.createTransformedShape(distortedCharacter);
-
-            // Draw the distorted character
-            graphics.fill(distorted);
-
-            // Update x by width
-            _x += glyphVector.getVisualBounds().getWidth() + spacing;
-          }
-
-          // TODO: Color converter
-          graphics.setColor(Color.RED);
-
-          // Draw random lines
-          for (int i = 0; i < config.getRandomLinesAmount(); i++) {
-            final int startX = RANDOM.nextInt(halfWidth);
-            final int startY = RANDOM.nextInt(halfHeight);
-            final int endX = halfWidth + RANDOM.nextInt(halfWidth);
-            final int endY = halfHeight + RANDOM.nextInt(halfHeight);
-
-            graphics.drawLine(startX, startY, endX, endY);
-          }
-
-          // Draw random ovals
-          for (int i = 0; i < config.getRandomOvalsAmount(); i++) {
-            final int startX = RANDOM.nextInt(halfWidth);
-            final int startY = RANDOM.nextInt(halfHeight);
-            final int endX = halfWidth + RANDOM.nextInt(halfWidth);
-            final int endY = halfHeight + RANDOM.nextInt(halfHeight);
-
-            graphics.drawOval(startX, startY, endX, endY);
-          }
-
-          // Select random color palette
-          final int[] colorPalette = COLOR_PALETTE[currentIndex % COLOR_PALETTE.length];
-          // Select the next color palette for geometry
-          final int[] nextColorPalette = COLOR_PALETTE[(currentIndex + 1) % COLOR_PALETTE.length];
-          // Clear background
-          Arrays.fill(buffer, (byte) 57);
-          // Color every pixel individually
-          final int spacingY = halfHeight - fontSize;
-          for (int x = spacing; x < image.getWidth() - spacing; x++) {
-            for (int y = spacingY; y < image.getHeight() - spacingY; y++) {
-              final int pixel = image.getRGB(x, y);
-              final int index = y * image.getWidth() + x;
-              if (pixel == -16777216 && RANDOM.nextInt(100) < 97) continue;
-              // Set color of pixel to random color from the palette
-              final byte color = (byte) (pixel == -16777216 ? RANDOM.nextInt(100) < 75 ? 14 :
-                RANDOM.nextInt(Byte.MAX_VALUE)
-                : pixel != -65536 ? colorPalette[RANDOM.nextInt(colorPalette.length)]
-                : nextColorPalette[RANDOM.nextInt(nextColorPalette.length)]);
-              // Write pixel color to buffer
-              buffer[index] = color;
-            }
-          }
-          // Cache buffer to map
-          cached[currentIndex] = new PreparedMapInfo(answer, image.getWidth(), image.getHeight(), buffer);
-        } finally {
-          // Dispose graphics
-          graphics.dispose();
-          // Finished?
-          if (currentIndex == cached.length - 1) {
-            Sonar.get().getLogger().info("Successfully precomputed map captcha answers in {}s!", timer);
-            currentlyPreparing = false;
-          }
-          preparedCAPTCHAs++;
-        }
-      });
-    }
-  }
-}
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2023-2024 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.netty;
-
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufHolder;
-import io.netty.util.IllegalReferenceCountException;
-import lombok.AllArgsConstructor;
-import lombok.ToString;
-
-// Taken from
-// https://github.com/PaperMC/Velocity/blob/dev/3.0.0/proxy/src/main/java/com/velocitypowered/proxy/protocol/util/DeferredByteBufHolder.java
-@ToString
-@AllArgsConstructor
-public class DeferredByteBufHolder implements ByteBufHolder {
-  private ByteBuf backing;
-
-  @Override
-  public ByteBuf content() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    if (backing.refCnt() <= 0) {
-      throw new IllegalReferenceCountException(backing.refCnt());
-    }
-    return backing;
-  }
-
-  @Override
-  public ByteBufHolder copy() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return new DeferredByteBufHolder(backing.copy());
-  }
-
-  @Override
-  public ByteBufHolder duplicate() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return new DeferredByteBufHolder(backing.duplicate());
-  }
-
-  @Override
-  public ByteBufHolder retainedDuplicate() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return new DeferredByteBufHolder(backing.retainedDuplicate());
-  }
-
-  @Override
-  public ByteBufHolder replace(final ByteBuf content) {
-    if (content == null) {
-      throw new NullPointerException("content");
-    }
-    backing = content;
-    return this;
-  }
-
-  @Override
-  public int refCnt() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return backing.refCnt();
-  }
-
-  @Override
-  public ByteBufHolder retain() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    backing.retain();
-    return this;
-  }
-
-  @Override
-  public ByteBufHolder retain(final int increment) {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    backing.retain(increment);
-    return this;
-  }
-
-  @Override
-  public ByteBufHolder touch() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    backing.touch();
-    return this;
-  }
-
-  @Override
-  public ByteBufHolder touch(final Object hint) {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    backing.touch(hint);
-    return this;
-  }
-
-  @Override
-  public boolean release() {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return backing.release();
-  }
-
-  @Override
-  public boolean release(final int decrement) {
-    if (backing == null) {
-      throw new IllegalStateException("Trying to obtain contents of holder with a null buffer");
-    }
-    return backing.release(decrement);
-  }
-}
@@ -15,14 +15,12 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.common.fallback.protocol.packets.config;
+package xyz.jonesdev.sonar.common.fallback.protocol.packets.configuration;

 import io.netty.buffer.ByteBuf;
-import lombok.ToString;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

-@ToString
 public final class FinishConfigurationPacket implements FallbackPacket {

  @Override
@@ -35,6 +33,7 @@ public final class FinishConfigurationPacket implements FallbackPacket {

  @Override
  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    // This packet is always empty; see https://wiki.vg/Protocol#Finish_Configuration
    return 0;
  }
 }
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.configuration;
+
+import io.netty.buffer.ByteBuf;
+import lombok.*;
+import net.kyori.adventure.nbt.BinaryTag;
+import net.kyori.adventure.nbt.CompoundBinaryTag;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketSnapshot;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public final class RegistryDataPacket implements FallbackPacket {
+  private CompoundBinaryTag tag;
+  private String type;
+  private List<RegistryDataPacket.Bundle> bundles;
+
+  @Override
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_20_5) < 0) {
+      writeNamelessCompoundTag(byteBuf, tag);
+    } else if (type != null) {
+      writeString(byteBuf, type);
+      writeVarInt(byteBuf, bundles.size());
+
+      for (final RegistryDataPacket.Bundle bundle : bundles) {
+        writeString(byteBuf, bundle.getName());
+        // Write the bundle tag
+        final CompoundBinaryTag tag = bundle.getTag();
+        if (tag != null) {
+          byteBuf.writeBoolean(true);
+          writeNamelessCompoundTag(byteBuf, tag);
+        } else {
+          byteBuf.writeBoolean(false);
+        }
+      }
+    }
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+
+  public static FallbackPacket @NotNull [] of(final @NotNull CompoundBinaryTag rootTag) {
+    final FallbackPacket[] packets = new FallbackPacket[rootTag.size()];
+    int index = 0;
+    for (final String type : rootTag.keySet()) {
+      final ArrayList<RegistryDataPacket.Bundle> bundles = new ArrayList<>();
+      for (final BinaryTag binaryTag : rootTag.getCompound(type).getList("value")) {
+        final CompoundBinaryTag tag = (CompoundBinaryTag) binaryTag;
+        bundles.add(new Bundle(tag.getString("name"), tag.getCompound("element")));
+      }
+      packets[index++] = new FallbackPacketSnapshot(new RegistryDataPacket(rootTag, type, bundles));
+    }
+    return packets;
+  }
+
+  @Data
+  @Value
+  public static class Bundle {
+    @NotNull String name;
+    // In the protocol, it is able to be null
+    @Nullable CompoundBinaryTag tag;
+  }
+}
@@ -25,9 +25,16 @@ public final class LoginAcknowledgedPacket implements FallbackPacket {

  @Override
  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
  }

  @Override
  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
  }
+
+  @Override
+  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    // This packet is always empty; see https://wiki.vg/Protocol#Login_Acknowledged
+    return 0;
+  }
 }
@@ -25,24 +25,23 @@ import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.netty.FastUUID;
+import xyz.jonesdev.sonar.common.util.FastUuidSansHyphens;

 import java.util.UUID;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;

@Getter
@ToString
@NoArgsConstructor
@AllArgsConstructor
 public final class LoginSuccessPacket implements FallbackPacket {
-  private String username;
  private UUID uuid;
+  private String username;

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    if (protocolVersion.compareTo(MINECRAFT_1_19) >= 0) {
      writeUUID(byteBuf, uuid);
    } else if (protocolVersion.compareTo(MINECRAFT_1_16) >= 0) {
@@ -50,7 +49,7 @@ public final class LoginSuccessPacket implements FallbackPacket {
    } else if (protocolVersion.compareTo(MINECRAFT_1_7_6) >= 0) {
      writeString(byteBuf, uuid.toString());
    } else {
-      writeString(byteBuf, FastUUID.toString(uuid));
+      writeString(byteBuf, FastUuidSansHyphens.toString(uuid));
    }

    writeString(byteBuf, username);
@@ -58,6 +57,9 @@ public final class LoginSuccessPacket implements FallbackPacket {
    if (protocolVersion.compareTo(MINECRAFT_1_19) >= 0) {
      writeVarInt(byteBuf, 0); // properties
    }
+    if (protocolVersion.compareTo(MINECRAFT_1_20_5) >= 0) {
+      byteBuf.writeBoolean(false); // should authenticate
+    }
  }

  @Override
@@ -29,8 +29,7 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;

@Getter
@ToString
@@ -67,7 +66,7 @@ public final class ChunkDataPacket implements FallbackPacket {
  }

  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    byteBuf.writeInt(x);
    byteBuf.writeInt(z);

@@ -30,12 +30,12 @@ import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
@ToString
@NoArgsConstructor
@AllArgsConstructor
-public class ClientAbilitiesPacket implements FallbackPacket {
+public final class ClientAbilitiesPacket implements FallbackPacket {
  private int encodedFlags;
  private float flySpeed, walkSpeed;

  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
    byteBuf.writeByte(encodedFlags);
    byteBuf.writeFloat(flySpeed);
    byteBuf.writeFloat(walkSpeed);
@@ -43,8 +43,6 @@ public class ClientAbilitiesPacket implements FallbackPacket {

  @Override
  public void decode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    encodedFlags = byteBuf.readByte();
-    flySpeed = byteBuf.readFloat();
-    walkSpeed = byteBuf.readFloat();
+    throw new UnsupportedOperationException();
  }
 }
@@ -27,8 +27,8 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.readString;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.readVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readString;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;

@Getter
@ToString
@@ -39,24 +39,19 @@ public final class ClientSettingsPacket implements FallbackPacket {
  private byte viewDistance;
  private int chatVisibility;
  private boolean chatColors;
-  private byte difficulty; // 1.7 Protocol
+  private byte difficulty; // 1.7
  private short skinParts;
  private int mainHand;
  private boolean chatFilteringEnabled; // Added in 1.17
  private boolean clientListingAllowed; // Added in 1.18, overwrites server-list "anonymous" mode

  @Override
-  public int expectedMinLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    return 2;
+  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
  }

  @Override
-  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    return 0xff + 1; // 256 as a hard-limit
-  }
-
-  @Override
-  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    locale = readString(byteBuf, 16);
    viewDistance = byteBuf.readByte();
    chatVisibility = readVarInt(byteBuf);
@@ -82,7 +77,12 @@ public final class ClientSettingsPacket implements FallbackPacket {
  }

  @Override
-  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    throw new UnsupportedOperationException();
+  public int expectedMinLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    return 2;
+  }
+
+  @Override
+  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    return 0xff + 1; // 256 as a hard-limit
  }
 }
@@ -37,7 +37,7 @@ public final class DefaultSpawnPositionPacket implements FallbackPacket {
  private int x, y, z;

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
      byteBuf.writeInt(x);
      byteBuf.writeInt(y);
@@ -26,7 +26,7 @@ import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.utility.component.ComponentHolder;
+import xyz.jonesdev.sonar.common.util.ComponentHolder;

@Getter
@ToString
@@ -37,7 +37,7 @@ public final class DisconnectPacket implements FallbackPacket {
  private boolean login;

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    componentHolder.write(byteBuf, login ? ProtocolVersion.MINECRAFT_1_20_2 : protocolVersion);
  }

@@ -46,8 +46,7 @@ public final class DisconnectPacket implements FallbackPacket {
    throw new UnsupportedOperationException();
  }

-  public static @NotNull DisconnectPacket create(final @NotNull Component component,
-                                                 final boolean login) {
-    return new DisconnectPacket(new ComponentHolder(component), login);
+  public static @NotNull DisconnectPacket create(final @NotNull Component component, final boolean duringLogin) {
+    return new DisconnectPacket(new ComponentHolder(component), duringLogin);
  }
 }
@@ -33,7 +33,7 @@ public final class GameEventPacket implements FallbackPacket {
  private float value;

  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
    byteBuf.writeByte(type);
    byteBuf.writeFloat(value);
  }
@@ -27,8 +27,7 @@ import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
 import static xyz.jonesdev.sonar.common.fallback.protocol.dimension.DimensionRegistry.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;

 // Mostly taken from
 // https://github.com/Nan1t/NanoLimbo/blob/main/src/main/java/ua/nanit/limbo/protocol/packets/play/PacketJoinGame.java
@@ -48,7 +47,7 @@ public final class JoinGamePacket implements FallbackPacket {
  private String levelName;

  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    byteBuf.writeInt(entityId);

    if (protocolVersion.inBetween(MINECRAFT_1_7_2, MINECRAFT_1_7_6)) {
@@ -210,7 +209,7 @@ public final class JoinGamePacket implements FallbackPacket {
      return;
    }

-    if (protocolVersion.compareTo(MINECRAFT_1_20_2) >= 0) {
+    if (protocolVersion.inBetween(MINECRAFT_1_20_2, MINECRAFT_1_20_3)) {
      byteBuf.writeBoolean(isHardcore);
      writeStringArray(byteBuf, levelNames);
      writeVarInt(byteBuf, 0); // max players
@@ -228,6 +227,29 @@ public final class JoinGamePacket implements FallbackPacket {
      byteBuf.writeBoolean(false); // flat
      byteBuf.writeBoolean(false); // no last death location
      writeVarInt(byteBuf, 0);
+      return;
+    }
+
+    if (protocolVersion.compareTo(MINECRAFT_1_20_5) >= 0) {
+      byteBuf.writeBoolean(isHardcore);
+      writeStringArray(byteBuf, levelNames);
+      writeVarInt(byteBuf, 0); // max players
+      writeVarInt(byteBuf, viewDistance);
+      writeVarInt(byteBuf, viewDistance); // simulation distance
+      byteBuf.writeBoolean(reducedDebugInfo);
+      byteBuf.writeBoolean(showRespawnScreen);
+      byteBuf.writeBoolean(false); // limited crafting
+      // It depends on the dimension data we send in RegistryData. If we only send one dimension. It should be 0.
+      writeVarInt(byteBuf, 0);
+      writeString(byteBuf, levelName);
+      byteBuf.writeLong(partialHashedSeed);
+      byteBuf.writeByte(gamemode);
+      byteBuf.writeByte(-1); // previous gamemode
+      byteBuf.writeBoolean(false); // debug type
+      byteBuf.writeBoolean(false); // flat
+      byteBuf.writeBoolean(false); // no last death location
+      writeVarInt(byteBuf, 0); // pearl cooldown
+      byteBuf.writeBoolean(false); // secure profile
    }
  }

@@ -28,8 +28,8 @@ import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_12_2;
 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_8;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.readVarInt;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;

@Getter
@ToString
@@ -39,7 +39,7 @@ public final class KeepAlivePacket implements FallbackPacket {
  private long id;

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    if (protocolVersion.compareTo(MINECRAFT_1_12_2) >= 0) {
      byteBuf.writeLong(id);
    } else if (protocolVersion.compareTo(MINECRAFT_1_8) >= 0) {
@@ -50,7 +50,7 @@ public final class KeepAlivePacket implements FallbackPacket {
  }

  @Override
-  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    if (protocolVersion.compareTo(MINECRAFT_1_12_2) >= 0) {
      id = byteBuf.readLong();
    } else if (protocolVersion.compareTo(MINECRAFT_1_8) >= 0) {
@@ -21,32 +21,29 @@ import io.netty.buffer.ByteBuf;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.map.MapInfo;

-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;

@Getter
-@ToString
@NoArgsConstructor
@AllArgsConstructor
 public final class MapDataPacket implements FallbackPacket {
-  private MapInfo mapInfo;
+  private int[] buffer;
+  private int x, y;

  @Override
  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
    writeVarInt(byteBuf, 0);

    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
-      byteBuf.writeShort(mapInfo.getBuffer().length + 3);
+      byteBuf.writeShort(buffer.length + 3);
      byteBuf.writeByte(0); // scaling
-      byteBuf.writeByte(mapInfo.getX());
-      byteBuf.writeByte(mapInfo.getY());
-
-      byteBuf.writeBytes(mapInfo.getBuffer());
+      byteBuf.writeByte(x);
+      byteBuf.writeByte(y);
+      writeArray(byteBuf, buffer);
    } else {
      byteBuf.writeByte(0); // scaling

@@ -65,13 +62,19 @@ public final class MapDataPacket implements FallbackPacket {
        writeVarInt(byteBuf, 0);
      }

-      byteBuf.writeByte(mapInfo.getColumns());
-      byteBuf.writeByte(mapInfo.getRows());
-      byteBuf.writeByte(mapInfo.getX());
-      byteBuf.writeByte(mapInfo.getY());
+      byteBuf.writeByte(128); // rows
+      byteBuf.writeByte(128); // columns
+      byteBuf.writeByte(x);
+      byteBuf.writeByte(y);

-      writeVarInt(byteBuf, mapInfo.getBuffer().length);
-      byteBuf.writeBytes(mapInfo.getBuffer());
+      writeVarInt(byteBuf, buffer.length);
+      writeArray(byteBuf, buffer);
+    }
+  }
+
+  private static void writeArray(final ByteBuf byteBuf, final int @NotNull [] array) {
+    for (final int i : array) {
+      byteBuf.writeByte(i);
    }
  }

@@ -15,29 +15,32 @@
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

-package xyz.jonesdev.sonar.common.fallback.protocol.packets.config;
+package xyz.jonesdev.sonar.common.fallback.protocol.packets.play;

 import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.dimension.DimensionRegistry;
-
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.writeNamelessCompoundTag;

@Getter
@ToString
-public final class RegistryDataPacket implements FallbackPacket {
+@NoArgsConstructor
+@AllArgsConstructor
+public final class PaddleBoatPacket implements FallbackPacket {
+  private boolean leftPaddle, rightPaddle;

  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    writeNamelessCompoundTag(byteBuf, DimensionRegistry.CODEC_1_20);
-  }
-
-  @Override
-  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
    throw new UnsupportedOperationException();
  }
+
+  @Override
+  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    leftPaddle = byteBuf.readBoolean();
+    rightPaddle = byteBuf.readBoolean();
+  }
 }
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import java.util.EnumSet;
+import java.util.UUID;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class PlayerInfoPacket implements FallbackPacket {
+  private String username;
+  private UUID uuid;
+  private int gamemode;
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    if (protocolVersion.compareTo(MINECRAFT_1_8) < 0) {
+      writeString(byteBuf, username);
+      byteBuf.writeBoolean(true); // online
+      byteBuf.writeShort(0);
+      return;
+    }
+
+    // https://wiki.vg/Protocol#player-info:player-actions
+    if (protocolVersion.compareTo(MINECRAFT_1_19_3) >= 0) {
+      final EnumSet<Action> actions = EnumSet.noneOf(Action.class);
+      actions.add(Action.ADD_PLAYER);
+      actions.add(Action.UPDATE_LISTED);
+      actions.add(Action.UPDATE_GAMEMODE);
+      writeEnumSet(byteBuf, actions, Action.class);
+
+      writeVarInt(byteBuf, 1); // size
+      writeUUID(byteBuf, uuid);
+      writeString(byteBuf, username);
+      writeVarInt(byteBuf, 0); // properties
+
+      byteBuf.writeBoolean(true); // update listed
+      writeVarInt(byteBuf, gamemode);
+      return;
+    }
+
+    writeVarInt(byteBuf, 0); // ADD_PLAYER
+    writeVarInt(byteBuf, 1);
+    writeUUID(byteBuf, uuid);
+    writeString(byteBuf, username);
+    writeVarInt(byteBuf, 0);
+    writeVarInt(byteBuf, gamemode);
+    writeVarInt(byteBuf, 60);
+    byteBuf.writeBoolean(false);
+
+    if (protocolVersion.compareTo(MINECRAFT_1_19) >= 0) {
+      byteBuf.writeBoolean(false);
+    }
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+
+  public enum Action {
+    ADD_PLAYER,
+    INITIALIZE_CHAT,
+    UPDATE_GAMEMODE,
+    UPDATE_LISTED,
+    UPDATE_LATENCY,
+    UPDATE_DISPLAY_NAME
+  }
+}
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class PlayerInputPacket implements FallbackPacket {
+  private float sideways, forward;
+  private boolean jump, unmount;
+
+  @Override
+  public void encode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    sideways = byteBuf.readFloat();
+    forward = byteBuf.readFloat();
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
+      jump = byteBuf.readBoolean();
+      unmount = byteBuf.readBoolean();
+    } else {
+      final byte flags = byteBuf.readByte();
+      jump = (flags & 0x01) != 0;
+      unmount = (flags & 0x02) != 0;
+    }
+  }
+}
@@ -30,16 +30,16 @@ import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
@ToString
@NoArgsConstructor
@AllArgsConstructor
-public final class PlayerTickPacket implements FallbackPacket {
+public final class PlayerPositionIdlePacket implements FallbackPacket {
  private boolean onGround;

-  @Override
-  public void decode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    onGround = byteBuf.readBoolean();
-  }
-
  @Override
  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
    throw new UnsupportedOperationException();
  }
+
+  @Override
+  public void decode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
+    onGround = byteBuf.readBoolean();
+  }
 }
@@ -27,7 +27,7 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;

@Getter
@ToString
@@ -39,19 +39,6 @@ public final class PlayerPositionLookPacket implements FallbackPacket {
  private int teleportId;
  private boolean onGround;

-  @Override
-  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
-    x = byteBuf.readDouble();
-    y = byteBuf.readDouble();
-    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
-      y = byteBuf.readDouble(); // Account for weird y positions on 1.7
-    }
-    z = byteBuf.readDouble();
-    yaw = byteBuf.readFloat();
-    pitch = byteBuf.readFloat();
-    onGround = byteBuf.readBoolean();
-  }
-
  @Override
  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
    byteBuf.writeDouble(x);
@@ -77,8 +64,21 @@ public final class PlayerPositionLookPacket implements FallbackPacket {
  }

  @Override
-  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    return protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0 ? 41 : 33;
+  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    x = byteBuf.readDouble();
+    y = byteBuf.readDouble();
+    if (protocolVersion.compareTo(MINECRAFT_1_8) < 0) {
+      y = byteBuf.readDouble(); // Account for weird y positions on 1.7
+    }
+    z = byteBuf.readDouble();
+    yaw = byteBuf.readFloat();
+    pitch = byteBuf.readFloat();
+    onGround = byteBuf.readBoolean();
+  }
+
+  @Override
+  public int expectedMaxLength(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+    return protocolVersion.compareTo(MINECRAFT_1_8) < 0 ? 41 : 33;
  }

  @Override
@@ -26,6 +26,8 @@ import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_8;
+
@Getter
@ToString
@NoArgsConstructor
@@ -35,24 +37,24 @@ public final class PlayerPositionPacket implements FallbackPacket {
  private boolean onGround;

  @Override
-  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public void decode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    x = byteBuf.readDouble();
    y = byteBuf.readDouble();
-    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
+    if (protocolVersion.compareTo(MINECRAFT_1_8) < 0) {
      y = byteBuf.readDouble(); // Account for weird y positions on 1.7
    }
    z = byteBuf.readDouble();
    onGround = byteBuf.readBoolean();
  }

-  @Override
-  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    throw new UnsupportedOperationException();
-  }
-
  @Override
  public int expectedMaxLength(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
-    return protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0 ? 33 : 25;
+    return protocolVersion.compareTo(MINECRAFT_1_8) < 0 ? 33 : 25;
  }

  @Override
@@ -23,21 +23,31 @@ import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.netty.DeferredByteBufHolder;

-import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_13;
 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT_1_8;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.*;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readRetainedByteBufSlice17;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readString;

-// Mostly taken from
-// https://github.com/PaperMC/Velocity/blob/dev/3.0.0/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/PluginMessage.java
@Getter
@ToString
-public final class PluginMessagePacket extends DeferredByteBufHolder implements FallbackPacket {
+public final class PluginMessagePacket implements FallbackPacket {
  private String channel;
+  private ByteBuf slicedBuffer;

-  public PluginMessagePacket() {
-    super(null);
+  @Override
+  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    channel = readString(byteBuf, 64);
+
+    if (protocolVersion.compareTo(MINECRAFT_1_8) >= 0) {
+      slicedBuffer = byteBuf.readRetainedSlice(byteBuf.readableBytes());
+    } else {
+      slicedBuffer = readRetainedByteBufSlice17(byteBuf);
+    }
  }

  @Override
@@ -49,24 +59,4 @@ public final class PluginMessagePacket extends DeferredByteBufHolder implements
  public int expectedMaxLength(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
    return 0xFFF; // strict size limit
  }
-
-  @Override
-  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
-    channel = readString(byteBuf, 512);
-
-    if (protocolVersion.compareTo(MINECRAFT_1_13) >= 0) {
-      channel = transformLegacyToModernChannel(channel);
-    }
-
-    if (protocolVersion.compareTo(MINECRAFT_1_8) >= 0) {
-      replace(byteBuf.readRetainedSlice(byteBuf.readableBytes()));
-    } else {
-      replace(readRetainedByteBufSlice17(byteBuf));
-    }
-  }
-
-  @Override
-  public void encode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    throw new UnsupportedOperationException();
-  }
 }
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class RemoveEntitiesPacket implements FallbackPacket {
+  private int entityId; // We only need one entityId
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    // No idea why Mojang decided that this is a good idea, but whatever
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_17) != 0) {
+      writeVarInt(byteBuf, 1); // size
+    }
+
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
+      byteBuf.writeInt(entityId);
+    } else {
+      writeVarInt(byteBuf, entityId);
+    }
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class SetExperiencePacket implements FallbackPacket {
+  private float experienceBar;
+  private int level;
+  private int totalExperience;
+
+  @Override
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    byteBuf.writeFloat(experienceBar);
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
+      byteBuf.writeShort(level);
+      byteBuf.writeShort(totalExperience);
+    } else {
+      writeVarInt(byteBuf, level);
+      writeVarInt(byteBuf, totalExperience);
+    }
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class SetPassengersPacket implements FallbackPacket {
+  private int entityId, passengerId;
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    // You can find this in the EntityAttach packet,
+    // which was later replaced by SetPassengers in 1.9+
+    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_9) < 0) {
+      byteBuf.writeInt(passengerId);
+      byteBuf.writeInt(entityId);
+      byteBuf.writeByte(0); // leash
+      return;
+    }
+
+    writeVarInt(byteBuf, entityId);
+    writeVarInt(byteBuf, 1); // passenger count
+    writeVarInt(byteBuf, passengerId);
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -29,20 +29,14 @@ import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.writeCompoundTag;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.writeNamelessCompoundTag;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;

@Getter
@ToString
@NoArgsConstructor
@AllArgsConstructor
 public final class SetSlotPacket implements FallbackPacket {
-  private int windowId;
-  private int slot;
-  private int count;
-  private int data;
-  private int itemId;
+  private int slot, count, itemId;
  private CompoundBinaryTag compoundBinaryTag;

  public static final CompoundBinaryTag MAP_NBT = CompoundBinaryTag.builder()
@@ -50,13 +44,8 @@ public final class SetSlotPacket implements FallbackPacket {
    .build();

  @Override
-  public void decode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
-    throw new UnsupportedOperationException();
-  }
-
-  @Override
-  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
-    byteBuf.writeByte(windowId);
+  public void encode(final @NotNull ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    byteBuf.writeByte(0); // windowId

    if (protocolVersion.compareTo(MINECRAFT_1_17_1) >= 0) {
      writeVarInt(byteBuf, 0);
@@ -64,32 +53,53 @@ public final class SetSlotPacket implements FallbackPacket {

    byteBuf.writeShort(slot);

-    if (protocolVersion.compareTo(MINECRAFT_1_13_2) >= 0) {
+    if (protocolVersion.inBetween(MINECRAFT_1_13_2, MINECRAFT_1_20_3)) {
      byteBuf.writeBoolean(true);
    }

+    if (protocolVersion.compareTo(MINECRAFT_1_20_5) >= 0) {
+      writeVarInt(byteBuf, count);
+    }
+
    if (protocolVersion.compareTo(MINECRAFT_1_13_2) < 0) {
      byteBuf.writeShort(itemId);
    } else {
      writeVarInt(byteBuf, itemId);
    }
-    byteBuf.writeByte(count);
+
+    if (protocolVersion.compareTo(MINECRAFT_1_20_5) < 0) {
+      byteBuf.writeByte(count);
+    }
+
    if (protocolVersion.compareTo(MINECRAFT_1_13) < 0) {
-      byteBuf.writeShort(data);
+      byteBuf.writeShort(0); // data
    }

    if (protocolVersion.compareTo(MINECRAFT_1_17) < 0) {
-      if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_8) < 0) {
+      if (protocolVersion.compareTo(MINECRAFT_1_8) < 0) {
        byteBuf.writeShort(-1);
      } else {
        byteBuf.writeByte(0);
      }
    } else {
-      if (protocolVersion.compareTo(MINECRAFT_1_20_2) >= 0) {
-        writeNamelessCompoundTag(byteBuf, compoundBinaryTag);
-      } else {
+      if (protocolVersion.compareTo(MINECRAFT_1_20_2) < 0) {
        writeCompoundTag(byteBuf, compoundBinaryTag);
+      } else if (protocolVersion.compareTo(MINECRAFT_1_20_5) < 0) {
+        writeNamelessCompoundTag(byteBuf, compoundBinaryTag);
+      } else { // 1.20.5
+        // TODO: find a way to improve this
+        // component
+        writeVarInt(byteBuf, 1); // component count to add
+        writeVarInt(byteBuf, 0); // component count to remove
+        // single VarInt component
+        writeVarInt(byteBuf, 26); // map component
+        writeVarInt(byteBuf, 0); // map id
      }
    }
  }
+
+  @Override
+  public void decode(final @NotNull ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
 }
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2023-2024 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class SpawnEntityPacket implements FallbackPacket {
+  private int entityId, entityType;
+  private double x, y, z;
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    writeVarInt(byteBuf, entityId);
+
+    final boolean v1_9orHigher = protocolVersion.compareTo(MINECRAFT_1_8) > 0;
+
+    if (v1_9orHigher) {
+      writeUUID(byteBuf, EMPTY_UUID);
+    }
+
+    if (protocolVersion.compareTo(MINECRAFT_1_14) >= 0) {
+      writeVarInt(byteBuf, entityType);
+    } else {
+      byteBuf.writeByte(entityType);
+    }
+
+    if (v1_9orHigher) {
+      byteBuf.writeDouble(x);
+      byteBuf.writeDouble(y);
+      byteBuf.writeDouble(z);
+    } else {
+      byteBuf.writeInt(floor(x * 32D));
+      byteBuf.writeInt(floor(y * 32D));
+      byteBuf.writeInt(floor(z * 32D));
+    }
+
+    byteBuf.writeByte(0); // pitch or yaw
+    byteBuf.writeByte(0); // yaw or pitch
+
+    if (protocolVersion.compareTo(MINECRAFT_1_19) >= 0) {
+      byteBuf.writeByte(0); // head yaw
+      writeVarInt(byteBuf, 0); // data
+    } else {
+      byteBuf.writeInt(0); // data
+    }
+
+    if (v1_9orHigher) {
+      byteBuf.writeShort(0); // velocity X
+      byteBuf.writeShort(0); // velocity Y
+      byteBuf.writeShort(0); // velocity Z
+    }
+  }
+
+  private static int floor(final double value) {
+    final int __value = (int) value;
+    return value < (double) __value ? __value - 1 : __value;
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -25,7 +25,7 @@ import lombok.ToString;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;

-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.readVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.readVarInt;

@Getter
@ToString
@@ -40,7 +40,7 @@ public final class TeleportConfirmPacket implements FallbackPacket {
  }

  @Override
-  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) {
+  public void decode(final ByteBuf byteBuf, final ProtocolVersion protocolVersion) throws Exception {
    teleportId = readVarInt(byteBuf);
  }
 }
@@ -33,33 +33,33 @@ import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.MINECRAFT
@NoArgsConstructor
@AllArgsConstructor
 public final class TransactionPacket implements FallbackPacket {
-  private int windowId, id;
+  private int windowId, transactionId;
  private boolean accepted;

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
-    if (protocolVersion.compareTo(MINECRAFT_1_17) < 0) {
-      byteBuf.writeByte(windowId);
-      byteBuf.writeShort((short) id);
-      // The "accepted" field is actually really unnecessary since
-      // it's never even used in the client.
-      byteBuf.writeBoolean(accepted);
-    } else {
-      byteBuf.writeInt(id);
-    }
-  }
-
-  @Override
-  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    if (protocolVersion.compareTo(MINECRAFT_1_17) < 0) {
      windowId = byteBuf.readByte();
-      id = byteBuf.readShort();
+      transactionId = byteBuf.readShort();
      accepted = byteBuf.readBoolean();
    } else {
-      id = byteBuf.readInt();
+      transactionId = byteBuf.readInt();
      // Always set accepted to true since 1.17 or higher don't use
      // transactions for inventory confirmation anymore.
      accepted = true;
    }
  }
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    if (protocolVersion.compareTo(MINECRAFT_1_17) < 0) {
+      byteBuf.writeByte(windowId);
+      byteBuf.writeShort((short) transactionId);
+      // The "accepted" field is actually really unnecessary since
+      // it's never even used in the client.
+      byteBuf.writeBoolean(accepted);
+    } else {
+      byteBuf.writeInt(transactionId);
+    }
+  }
 }
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2024 jones
+ *
+ * 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.packets.play;
+
+import io.netty.buffer.ByteBuf;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeString;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+public final class TransferPacket implements FallbackPacket {
+  private String destinationHost;
+  private int destinationPort;
+
+  @Override
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
+    writeString(byteBuf, destinationHost);
+    writeVarInt(byteBuf, destinationPort);
+  }
+
+  @Override
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+    throw new UnsupportedOperationException();
+  }
+}
@@ -26,21 +26,15 @@ import net.kyori.adventure.text.Component;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.utility.component.ComponentHolder;
-
-import java.time.Instant;
-import java.util.UUID;
+import xyz.jonesdev.sonar.common.util.ComponentHolder;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.ProtocolUtil.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.readVarInt;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.*;

@Data
@NoArgsConstructor
@AllArgsConstructor
 public final class UniversalChatPacket implements FallbackPacket {
-  private static final UUID PLACEHOLDER_UUID = new UUID(0L, 0L);
  private static final int DIV_FLOOR = -Math.floorDiv(-20, 8);

  public static final byte CHAT_TYPE = (byte) 0;
@@ -50,16 +44,9 @@ public final class UniversalChatPacket implements FallbackPacket {
  private ComponentHolder componentHolder;
  private String message;
  private byte type;
-  private boolean signedPreview;
-  private boolean unsigned = false;
-  private Instant timestamp;
-  private Instant expiry;
-  private long salt;
-  private boolean signed;
  private byte[] signature;

-  public UniversalChatPacket(final @NotNull Component component,
-                             final byte type) {
+  public UniversalChatPacket(final @NotNull Component component, final byte type) {
    this(new ComponentHolder(component), type);
  }

@@ -69,7 +56,7 @@ public final class UniversalChatPacket implements FallbackPacket {
  }

  @Override
-  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    // Serialized message
    componentHolder.write(byteBuf, protocolVersion);

@@ -85,36 +72,36 @@ public final class UniversalChatPacket implements FallbackPacket {
    // Sender
    if (protocolVersion.compareTo(MINECRAFT_1_16) >= 0
      && protocolVersion.compareTo(MINECRAFT_1_19) < 0) {
-      writeUUID(byteBuf, PLACEHOLDER_UUID);
+      writeUUID(byteBuf, EMPTY_UUID);
    }
  }

  @Override
-  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) {
+  public void decode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
    message = readString(byteBuf, 256);

-    if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19) >= 0) {
-      if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_1) <= 0) {
-        final long expiresAt = byteBuf.readLong();
+    if (protocolVersion.compareTo(MINECRAFT_1_19) >= 0) {
+      if (protocolVersion.compareTo(MINECRAFT_1_19_1) <= 0) {
+        byteBuf.readLong(); // expiresAt
        final long saltLong = byteBuf.readLong();
        final byte[] signatureBytes = readByteArray(byteBuf);
+        boolean unsigned = false;

        if (saltLong != 0L && signatureBytes.length > 0) {
          signature = signatureBytes;
-          expiry = Instant.ofEpochMilli(expiresAt);
-        } else if ((protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_1) >= 0
+        } else if ((protocolVersion.compareTo(MINECRAFT_1_19_1) >= 0
          || saltLong == 0L) && signatureBytes.length == 0) {
          unsigned = true;
        } else {
          throw new CorruptedFrameException("Invalid signature");
        }

-        signedPreview = byteBuf.readBoolean();
+        final boolean signedPreview = byteBuf.readBoolean();
        if (signedPreview && unsigned) {
          throw new CorruptedFrameException("Signature missing");
        }

-        if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_1) >= 0) {
+        if (protocolVersion.compareTo(MINECRAFT_1_19_1) >= 0) {
          final int size = readVarInt(byteBuf);
          if (size < 0 || size > 5) {
            throw new CorruptedFrameException("Invalid previous messages");
@@ -131,11 +118,12 @@ public final class UniversalChatPacket implements FallbackPacket {
          }
        }
      } else {
-        timestamp = Instant.ofEpochMilli(byteBuf.readLong());
-        salt = byteBuf.readLong();
-        signed = byteBuf.readBoolean();
+        byteBuf.readLong(); // timestamp
+        byteBuf.readLong(); // salt
+        final boolean signed = byteBuf.readBoolean();
+
        if (signed) {
-          byte[] sign = new byte[256];
+          final byte[] sign = new byte[256];
          byteBuf.readBytes(sign);
          signature = sign;
        } else {
@@ -143,7 +131,7 @@ public final class UniversalChatPacket implements FallbackPacket {
        }

        readVarInt(byteBuf);
-        byte[] bytes = new byte[DIV_FLOOR];
+        final byte[] bytes = new byte[DIV_FLOOR];
        byteBuf.readBytes(bytes);
      }
    }
@@ -25,19 +25,19 @@ import lombok.ToString;
 import org.jetbrains.annotations.NotNull;
 import xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion;
 import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
-import xyz.jonesdev.sonar.common.fallback.protocol.block.ChangedBlock;
+import xyz.jonesdev.sonar.common.fallback.protocol.block.BlockUpdate;

 import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarInt;
-import static xyz.jonesdev.sonar.common.utility.protocol.VarIntUtil.writeVarLong;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarInt;
+import static xyz.jonesdev.sonar.common.util.ProtocolUtil.writeVarLong;

@Getter
@NoArgsConstructor
@AllArgsConstructor
-@ToString(exclude = {"changedBlocks"})
+@ToString(exclude = {"blockUpdates"})
 public final class UpdateSectionBlocksPacket implements FallbackPacket {
  private int sectionX, sectionZ;
-  private ChangedBlock[] changedBlocks;
+  private BlockUpdate[] blockUpdates;

  @Override
  public void encode(final ByteBuf byteBuf, final @NotNull ProtocolVersion protocolVersion) throws Exception {
@@ -46,13 +46,13 @@ public final class UpdateSectionBlocksPacket implements FallbackPacket {
      byteBuf.writeInt(sectionZ);

      if (protocolVersion.compareTo(MINECRAFT_1_8) < 0) {
-        byteBuf.writeShort(changedBlocks.length);
-        byteBuf.writeInt(4 * changedBlocks.length);
+        byteBuf.writeShort(blockUpdates.length);
+        byteBuf.writeInt(4 * blockUpdates.length);
      } else {
-        writeVarInt(byteBuf, changedBlocks.length);
+        writeVarInt(byteBuf, blockUpdates.length);
      }

-      for (final ChangedBlock block : changedBlocks) {
+      for (final BlockUpdate block : blockUpdates) {
        byteBuf.writeShort(block.getLegacyBlockState());
        final int blockId = block.getType().getId(protocolVersion);
        if (protocolVersion.compareTo(MINECRAFT_1_13) >= 0) {
@@ -68,7 +68,7 @@ public final class UpdateSectionBlocksPacket implements FallbackPacket {
      }
    } else {
      // We only need one Y position
-      final int sectionY = changedBlocks[0].getPosition().getY() >> 4;
+      final int sectionY = blockUpdates[0].getPosition().getY() >> 4;

      // https://wiki.vg/Protocol#Update_Section_Blocks
      byteBuf.writeLong(((sectionX & 0x3FFFFFL) << 42) | (sectionY & 0xFFFFF) | ((sectionZ & 0x3FFFFFL) << 20));
@@ -78,9 +78,9 @@ public final class UpdateSectionBlocksPacket implements FallbackPacket {
        byteBuf.writeBoolean(true); // suppress light updates
      }

-      writeVarInt(byteBuf, changedBlocks.length);
+      writeVarInt(byteBuf, blockUpdates.length);

-      for (final ChangedBlock block : changedBlocks) {
+      for (final BlockUpdate block : blockUpdates) {
        // https://wiki.vg/Protocol#Update_Section_Blocks
        final int shiftedBlockId = block.getType().getId(protocolVersion) << 12;
        final long positionIdValue = shiftedBlockId | block.getBlockState();
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2023-2024 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.session;
+
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.fallback.FallbackUser;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.captcha.ItemType;
+import xyz.jonesdev.sonar.common.fallback.protocol.captcha.MapCaptchaInfo;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;
+
+import java.util.UUID;
+
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;
+
+/**
+ * Flow for this session handler
+ *
+ * <li>
+ *   {@link SetSlotPacket} and {@link MapDataPacket} packets are sent to the client,
+ *   therefore, setting the player's item to a map with a code on it (CAPTCHA).
+ *   <br>
+ *   See more: {@link FallbackCAPTCHASessionHandler}, {@link MapCaptchaInfo}
+ * </li>
+ * <li>
+ *   Then, we wait for the player to enter the {@link FallbackCAPTCHASessionHandler#answer} in chat.
+ * </li>
+ */
+public final class FallbackCAPTCHASessionHandler extends FallbackSessionHandler {
+
+  public FallbackCAPTCHASessionHandler(final FallbackUser user, final String username, final UUID uuid) {
+    super(user, username, uuid);
+
+    this.tries = Sonar.get().getConfig().getVerification().getMap().getMaxTries();
+
+    // Set slot to map
+    user.delayedWrite(new SetSlotPacket(36, 1,
+      ItemType.FILLED_MAP.getId(user.getProtocolVersion()), SetSlotPacket.MAP_NBT));
+    // Send random captcha to the player
+    final MapCaptchaInfo captcha = MAP_INFO_PREPARER.getRandomCaptcha();
+    this.answer = captcha.getAnswer();
+    captcha.delayedWrite(user);
+    // Teleport the player to the position above the platform
+    user.delayedWrite(CAPTCHA_POSITION);
+    // Make sure the player cannot move
+    user.delayedWrite(user.isGeyser() ? CAPTCHA_ABILITIES_BEDROCK : CAPTCHA_ABILITIES);
+    // Make sure the player knows what to do
+    user.delayedWrite(enterCodeMessage);
+    // Send all packets in one flush
+    user.getChannel().flush();
+  }
+
+  private final String answer;
+  private int tries, lastCountdownIndex, keepAliveStreak;
+
+  @Override
+  public void handle(final @NotNull FallbackPacket packet) {
+    // Check if the player took too long to enter the captcha
+    final int maxDuration = Sonar.get().getConfig().getVerification().getMap().getMaxDuration();
+    checkState(!user.getLoginTimer().elapsed(maxDuration), "took too long to enter captcha");
+
+    // Handle incoming chat messages
+    if (packet instanceof UniversalChatPacket) {
+      final UniversalChatPacket chat = (UniversalChatPacket) packet;
+
+      // Captcha is correct, finish verification
+      if (chat.getMessage().equals(answer)) {
+        finishVerification();
+        return;
+      }
+
+      // Captcha is incorrect, remove one try
+      checkState(tries-- > 0, "failed captcha too often");
+      user.write(incorrectCaptcha);
+    } else if (packet instanceof PlayerPositionPacket
+      || packet instanceof PlayerPositionLookPacket) {
+      // A position packet is sent approximately every second
+      final long difference = maxDuration - user.getLoginTimer().delay();
+      final int index = (int) (difference / 1000D);
+      // Make sure we can actually safely get and send the packet
+      if (lastCountdownIndex != index && index >= 0 && xpCountdown.length > index) {
+        // Send the countdown using the experience bar
+        user.write(xpCountdown[index]);
+      }
+      lastCountdownIndex = index;
+      // Send a KeepAlive packet every few seconds
+      if (keepAliveStreak++ > 20) {
+        keepAliveStreak = 0;
+        // Send a KeepAlive packet to prevent timeout
+        user.write(CAPTCHA_KEEP_ALIVE);
+      }
+    }
+  }
+}
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2023-2024 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.session;
+
+import org.jetbrains.annotations.NotNull;
+import xyz.jonesdev.sonar.api.Sonar;
+import xyz.jonesdev.sonar.api.fallback.FallbackUser;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacket;
+import xyz.jonesdev.sonar.common.fallback.protocol.FallbackPacketDecoder;
+import xyz.jonesdev.sonar.common.fallback.protocol.packets.play.*;
+
+import java.util.UUID;
+
+import static xyz.jonesdev.sonar.api.config.SonarConfiguration.Verification.Gravity.Gamemode.CREATIVE;
+import static xyz.jonesdev.sonar.api.fallback.protocol.ProtocolVersion.*;
+import static xyz.jonesdev.sonar.common.fallback.protocol.FallbackPreparer.*;
+
+public final class FallbackGravitySessionHandler extends FallbackSessionHandler {
+
+  public FallbackGravitySessionHandler(final FallbackUser user, final String username, final UUID uuid) {
+    super(user, username, uuid);
+
+    // We don't want to check Geyser players for valid gravity, as this might cause issues because of the protocol
+    this.enableGravityCheck = !user.isGeyser() && Sonar.get().getConfig().getVerification().getGravity().isEnabled();
+    this.enableCollisionsCheck = Sonar.get().getConfig().getVerification().getGravity().isCheckCollisions();
+
+    // FIXME: 1.18.2-1.19.3 weird loading world issue
+    // First, write the JoinGame packet to the buffer
+    user.delayedWrite(joinGame);
+    // Then, write the ClientAbilities packet to the buffer
+    // This is only necessary if the player is in creative mode
+    if (Sonar.get().getConfig().getVerification().getGravity().getGamemode() == CREATIVE) {
+      user.delayedWrite(DEFAULT_ABILITIES);
+    }
+    // Write the PositionLook packet to the buffer
+    user.delayedWrite(spawnPosition);
+    // Write the DefaultSpawnPosition packet to the buffer
+    if (user.getProtocolVersion().compareTo(MINECRAFT_1_19_3) >= 0) {
+      user.delayedWrite(defaultSpawnPosition);
+    }
+    // Write the PlayerInfo packet to the buffer
+    if (user.getProtocolVersion().compareTo(MINECRAFT_1_16_4) >= 0) {
+      user.delayedWrite(PLAYER_INFO);
+    }
+    // 1.20.3+ introduced game events
+    // Make sure the client knows that we're sending chunks next
+    if (user.getProtocolVersion().compareTo(MINECRAFT_1_20_3) >= 0) {
+      user.delayedWrite(START_WRITING_CHUNKS);
+    }
+    // Teleport player into an empty world by sending an empty chunk packet
+    user.delayedWrite(EMPTY_CHUNK_DATA);
+    // Spawn the invisible platform below the player
+    if (this.enableCollisionsCheck) {
+      user.delayedWrite(updateSectionBlocks);
+    }
+    // Send all packets at once
+    user.getChannel().flush();
+
+    // 1.8 and below don't have TeleportConfirm packets, which is why we're skipping that check.
+    if (user.getProtocolVersion().compareTo(MINECRAFT_1_9) < 0) {
+      markTeleported();
+    }
+  }
+
+  private final boolean enableGravityCheck, enableCollisionsCheck;
+  private boolean teleported, checkMovement;
+  private short expectedTransactionId = 1;
+  private double x, y, z, deltaY;
+  private int movementTick;
+
+  private void markTeleported() {
+    // Activate the movement checks
+    teleported = true;
+  }
+
+  private void markNextStage() {
+    // Force-stop the movement checks
+    teleported = false;
+
+    // Check if the player sent all necessary packets
+    checkState(user.isReceivedClientSettings(), "didn't send client settings");
+    // Don't check Geyser players for plugin messages
+    if (!user.isGeyser()) {
+      checkState(user.isReceivedPluginMessage(), "didn't send plugin message");
+    }
+  }
+
+  /**
+   * Uses ping packets to check for an immediate, legitimate response from the client
+   * <br>
+   * <a href="https://wiki.vg/Protocol#Ping_.28configuration.29">Wiki.vg - Ping (configuration)</a>
+   * <a href="https://wiki.vg/Protocol#Ping_.28play.29">Wiki.vg - Ping (play)</a>
+   */
+  private void sendTransaction() {
+    // Interrupt any ongoing process/check
+    markNextStage();
+
+    // Send a Transaction (Ping) packet with a random ID
+    expectedTransactionId = (short) -(RANDOM.nextInt(Short.MAX_VALUE));
+    user.write(new TransactionPacket(0, expectedTransactionId, false));
+  }
+
+  private void forceCAPTCHA() {
+    // Interrupt any ongoing process/check
+    markNextStage();
+
+    // Forcefully make the player solve a CAPTCHA
+    final var decoder = (FallbackPacketDecoder) user.getPipeline().get(FallbackPacketDecoder.class);
+    decoder.setListener(new FallbackCAPTCHASessionHandler(user, username, uuid));
+  }
+
+  private void markSuccess() {
+    // Either send the player to the vehicle check,
+    // send the player to the CAPTCHA, or finish the verification.
+    final var decoder = (FallbackPacketDecoder) user.getPipeline().get(FallbackPacketDecoder.class);
+    // Pass the player to the next best verification handler
+    if (Sonar.get().getFallback().shouldPerformVehicleCheck()) {
+      decoder.setListener(new FallbackVehicleSessionHandler(user, username, uuid, x, y, z));
+    } else if (Sonar.get().getFallback().shouldPerformCaptcha()) {
+      decoder.setListener(new FallbackCAPTCHASessionHandler(user, username, uuid));
+    } else {
+      // The player has passed all checks
+      finishVerification();
+    }
+  }
+
+  @Override
+  public void handle(final @NotNull FallbackPacket packet) {
+    if (packet instanceof TransactionPacket) {
+      final TransactionPacket transaction = (TransactionPacket) packet;
+
+      // Make sure random transactions aren't counted
+      checkState(expectedTransactionId <= 0, "unexpected transaction");
+      // Make sure the transaction was accepted
+      // This must - by vanilla protocol - always be accepted
+      checkState(transaction.isAccepted(), "didn't accept transaction");
+      // Also check if the transaction ID matches the expected ID
+      final long transactionId = transaction.getTransactionId();
+      checkState(transactionId == expectedTransactionId,
+        "expected T ID " + expectedTransactionId + ", but got " + transactionId);
+
+      markSuccess();
+    } else if (packet instanceof PlayerPositionLookPacket) {
+      // Make sure the player has teleported before checking for position packets
+      if (teleported) {
+        final PlayerPositionLookPacket positionLook = (PlayerPositionLookPacket) packet;
+        handleMovement(positionLook.getX(), positionLook.getY(), positionLook.getZ(), positionLook.isOnGround());
+      }
+    } else if (packet instanceof PlayerPositionPacket) {
+      // Make sure the player has teleported before checking for position packets
+      if (teleported) {
+        final PlayerPositionPacket position = (PlayerPositionPacket) packet;
+        handleMovement(position.getX(), position.getY(), position.getZ(), position.isOnGround());
+      }
+    } else if (packet instanceof TeleportConfirmPacket) {
+      final TeleportConfirmPacket teleportConfirm = (TeleportConfirmPacket) packet;
+
+      // Only expect this packet to be sent once
+      checkState(!teleported, "duplicate teleport confirm");
+      // Check if the teleport ID matches the expected ID
+      final int teleportId = teleportConfirm.getTeleportId();
+      checkState(teleportId == TELEPORT_ID,
+        "expected TP ID " + TELEPORT_ID + ", but got " + teleportId);
+
+      markTeleported();
+    }
+    // Make sure to catch all ClientSettings and PluginMessage packets during the play phase.
+    else if (packet instanceof ClientSettingsPacket) {
+      // Let the session handler itself know about this packet
+      checkClientSettings((ClientSettingsPacket) packet);
+    } else if (packet instanceof PluginMessagePacket) {
+      // Let the session handler itself know about this packet
+      checkPluginMessage((PluginMessagePacket) packet);
+    }
+  }
+
+  private void handleMovement(final double x, final double y, final double z, final boolean isOnGround) {
+    // Check if the client hasn't moved before sending the first movement packet
+    if (!checkMovement) {
+      // No need to continue checking if the gravity and collision checks are disabled
+      // Continue with the next stage of the verification
+      if (!enableGravityCheck && !enableCollisionsCheck) {
+        sendTransaction();
+        return;
+      }
+
+      if (x == SPAWN_X_POSITION && z == SPAWN_Z_POSITION) {
+        // Now, once we verified the X and Z position, we can safely check for gravity
+        checkMovement = true;
+        movementTick = 0;
+        // Synchronize the Y coordinate
+        this.y = dynamicSpawnYPosition;
+      }
+      return;
+    }
+
+    // Calculate/store all necessary positions
+    final double lastDeltaY = this.deltaY;
+    final double lastY = this.y;
+    this.deltaY = y - lastY;
+    this.x = x;
+    this.y = y;
+    this.z = z;
+
+    // Log/debug position if enabled in the configuration
+    if (Sonar.get().getConfig().getVerification().isDebugXYZPositions()) {
+      Sonar.get().getFallback().getLogger().info("{}: {}/{}/{}, ly={}/dy={}, {}",
+        username, x, y, z, lastY, deltaY, isOnGround);
+    }
+
+    // The player is not allowed to move away from the collision platform.
+    // This should not happen unless the max movement tick is configured to a high number.
+    checkState(Math.abs(x - BLOCKS_PER_ROW) < BLOCKS_PER_ROW, "moved too far (x)");
+    checkState(Math.abs(z - BLOCKS_PER_ROW) < BLOCKS_PER_ROW, "moved too far (z)");
+
+    if (!isOnGround) {
+      // The deltaY is 0 whenever the player sends their first position packet.
+      // We have to account for this or the player will fail the verification.
+      if (deltaY == 0) {
+        // Reset the movement tick as a safety measure
+        movementTick = 0;
+        return;
+      }
+
+      if (enableGravityCheck) {
+        // Predict the player's current motion based on the last motion
+        // https://minecraft.wiki/w/Entity#Motion_of_entities
+        final double predicted = (lastDeltaY - 0.08) * 0.98f;
+        final double difference = Math.abs(deltaY - predicted);
+
+        // Check if the difference between the predicted motion and
+        // the actual motion is greater than our minimum threshold.
+        if (difference > 1e-7) {
+          // Do not throw an exception if the user configured to display the CAPTCHA instead
+          if (Sonar.get().getConfig().getVerification().getGravity().isCaptchaOnFail()) {
+            forceCAPTCHA();
+            return;
+          }
+          user.fail("incorrect gravity; predicted: " + predicted + " deltaY: " + deltaY + " y: " + y);
+        }
+
+        // The player is obeying gravity, go on to the next stage if the collision check is disabled.
+        if (++movementTick == maxMovementTick && !enableCollisionsCheck) {
+          sendTransaction();
+        }
+      }
+    } else if (enableCollisionsCheck) {
+      // Calculate the difference between the player's Y coordinate and the expected Y coordinate
+      double collisionOffsetY = (DEFAULT_Y_COLLIDE_POSITION + blockType.getBlockHeight()) - y;
+      // 1.7 sends the head position instead of the AABB minY
+      // This little hack accounts for the offset of approximately 1.62
+      if (user.getProtocolVersion().compareTo(MINECRAFT_1_8) < 0) {
+        collisionOffsetY += 1.62f;
+      }
+      // Make sure the player is actually colliding with the blocks and not only spoofing ground
+      checkState(collisionOffsetY > -0.03, "illegal collision: " + collisionOffsetY);
+      // The player has collided with the blocks, go on to the next stage
+      sendTransaction();
+    }
+  }
+}
Author	SHA1	Message	Date
Jones	15af0f3823	Release 2.0.32 (#320 )	2024-06-12 15:18:11 +02:00
Jones	998a248819	Recode verification system (#319 ) * feat: [wip] recode the entire verification * feat: [wip] add CAPTCHA session handler * feat: add CAPTCHA xp bar and KeepAlive * fix(fallback): migrate "connected" map to hashset * fix(fallback): 1.8 not being able to connect * fix(fallback): NullPointerException * fix(fallback): 1.7.2-1.7.10 not being able to verify * style: fix some doc comments * style: add doc comment to FallbackVehicleSessionHandler * style: add doc comment to FallbackCAPTCHASessionHandler * fix: prevent users from sending multiple login ack packets * style: rename variable for clarification * fix: [wip] gravity check not being executed properly * fix: use absolute value for motion prediction in gravity check * fix: check for duplicate PluginMessage packets * fix: oops, I broke the plugin message check * refactor: restructure verification failing logic * fix: mark LoginSuccess packet as encode-only * refactor: store channel pipeline in FallbackUser * feat: hook the traffic listener in channelActive to allow listening to handshakes * refactor(common): small maintainability changes * style(common): code clean up in packet registry * refactor(all): replace lombok's val with Java's var * fix: remove unnecessary packet filter in vehicle check * fix: don't send the disconnect message if the player is transferred * style: improve/simplify initialization of VerifiedPlayer * fix: wrong name resulting in compilation error * chore: fix a broken documentation link in the readme * fix: don't check Geyser players for plugin messages * fix: mark 1.7 players successful after 100ms, not 250ms * fix: skip movements if gravity and collision checks are disabled * style: don't store Sonar API instance in Fallback * fix: revert https://github.com/jonesdevelopment/sonar/pull/319/commits/f9c4f42503dfebb6fbba754ff26662e69f7eed00	2024-06-09 12:55:24 +02:00
Jones	3846007613	Bump adventure-platform from 4.3.2 to 4.3.3 (#318 )	2024-06-03 00:51:27 +02:00
Jones	c5446f9507	Fix several concurrency issues (#317 ) * fix: several concurrency issues in Sonar * fix: recode fallback queue polling and threading * fix: recode fallback ratelimiter	2024-05-31 15:02:48 +02:00
Jones	5a13b54350	Optimize player data handling (#316 ) * fix: improve how fallback stores connected player data * fix: improve Fallback's custom read timeout handler * fix: max players per IP check not working as intended	2024-05-31 13:27:24 +02:00
Jones	d516da7f9e	Recode too many accounts check (#315 )	2024-05-31 13:18:06 +02:00
Jones	a58b8c8a83	Implement 'verification disabled' warning (#313 )	2024-05-29 17:54:54 +02:00
Jones	3be87006aa	Add helpful links to issues configuration (#312 )	2024-05-28 16:31:43 +02:00
Jones	c70c81eb11	Minimize shadowed jar file (#311 )	2024-05-28 14:28:21 +02:00
Jones	d71334c1b4	Migrate to Gradle version catalog (#310 )	2024-05-28 14:10:23 +02:00
dependabot[bot]	59f141d1be	Bump netty-all from 4.1.109.Final to 4.1.110.Final (#309 ) Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.109.Final to 4.1.110.Final. - [Commits](https://github.com/netty/netty/compare/netty-4.1.109.Final...netty-4.1.110.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>	2024-05-27 14:08:19 +02:00
Jones	9bc3d73cb7	Release 2.0.31 (#308 )	2024-05-25 15:10:26 +02:00
Jones	d3aaba4650	Update translations (#307 ) * fix: some English grammar mistakes * fix: add missing Dutch translation string * fix: add missing Georgian translations	2024-05-23 20:21:49 +02:00
Jones	68d99dd59b	Update and improve some packet-related code (#306 ) * fix: allow packet encode and decode method to throw exceptions * fix: remove unnecessary annotations from FinishConfigurationPacket * fix: don't modify the received plugin message channel	2024-05-23 18:12:02 +02:00
Jones	5f77f21ee9	Improve networking performance (#305 ) * refactor: small structural changes * build(deps): bump adventure-nbt from 4.16.0 to 4.17.0 * feat(velocity): use MethodHandles for better performance on connection * feat(bungee): use MethodHandles for better performance on connection	2024-05-16 21:18:29 +02:00
Jones	c5e1d12424	Fix NullPointerException (#304 ) * fix: NullPointerException with VerifiedPlayerController * fix: NullPointerException with Metrics	2024-05-16 20:15:05 +02:00
Jones	25dbbf0b1f	Bump Gradle from 8.6 to 8.7 (#303 )	2024-05-16 19:55:32 +02:00
Jones	cbf04f6f2e	Fix error in French webhook translations (#302 )	2024-05-15 20:04:47 +02:00
Jones	8966d7d0e8	Add French translations (#300 ) * feat: add French translations * fix: small mistakes in some translations	2024-05-15 19:42:38 +02:00
dependabot[bot]	064a3cee2a	Bump adventure-text-serializer-gson to 4.17.0 (#297 ) Bumps [net.kyori:adventure-text-serializer-gson](https://github.com/KyoriPowered/adventure) from 4.16.0 to 4.17.0. - [Release notes](https://github.com/KyoriPowered/adventure/releases) - [Commits](https://github.com/KyoriPowered/adventure/compare/v4.16.0...v4.17.0) --- updated-dependencies: - dependency-name: net.kyori:adventure-text-serializer-gson 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>	2024-05-13 13:51:56 +02:00
dependabot[bot]	260af8b2be	Bump adventure-text-minimessage to 4.17.0 (#298 ) Bumps [net.kyori:adventure-text-minimessage](https://github.com/KyoriPowered/adventure) from 4.16.0 to 4.17.0. - [Release notes](https://github.com/KyoriPowered/adventure/releases) - [Commits](https://github.com/KyoriPowered/adventure/compare/v4.16.0...v4.17.0) --- updated-dependencies: - dependency-name: net.kyori:adventure-text-minimessage 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>	2024-05-13 13:50:07 +02:00
Jones	a7d52467b8	Release 2.0.30 (#295 )	2024-05-11 14:43:09 +02:00
Jones	0ed6b0351c	Bump capja from 1.0.2 to 1.0.3 (#294 )	2024-05-11 14:39:57 +02:00
Jones	a152633b41	Don't cache map data to avoid memory issues (#293 )	2024-05-11 14:34:26 +02:00
Jones	f618d1ce77	Release 2.0.29 (#291 )	2024-05-11 13:34:46 +02:00
Jones	ea35904d33	Add more softdepends for compatibility (#290 ) * fix(velocity): add more soft dependencies * fix(bukkit): add more soft dependencies * fix(bungee): add more soft dependencies	2024-05-11 13:27:37 +02:00
Jones	ececb66bf1	Update translations (#289 ) * feat: add missing German translations * feat: add missing Czech translations * feat: add missing Russian translations (thanks to @F3F5) * fix: typo in messages/en.yml * feat: add Dutch translations	2024-05-10 20:22:31 +02:00
Jones	6caa37e3e0	Recode the map CAPTCHA (#288 ) * feat: [wip] upgrade to capja 1.0.0 * fix: don't store buffer to avoid memory issues * fix: use one buffer array for storing RGB and indexes * fix: color palette sometimes showing incorrect colors * build(deps): bump capja from 1.0.0 to 1.0.1 * fix: actually let the user customize the background * build(deps): bump capja from 1.0.1 to 1.0.2	2024-05-10 19:04:44 +02:00
Jones	a057199e0b	Generalize packets and clean up code (#287 ) * refactor: some renaming to better understand the functionality * refactor: port pack modified FastUUID for LoginSuccessPacket * refactor: rename package utility to util * fix: don't create a snapshot of FinishConfigurationPacket * fix: don't allow encoding of LoginAcknowledgedPacket * refactor: PlayerTickPacket -> PlayerPositionIdlePacket * style: rename some variables for clarity * fix: optimize UniversalChatPacket * refactor: ChangedBlock -> BlockUpdate * style: codestyle consistency	2024-05-05 13:45:37 +02:00
Jones	d0bbcdc600	Use pre-encoded packet snapshots to reduce CPU usage (#286 ) * feat: cache most packets Sonar needs to encode * fix: make sure to also cache MapInfo packets * fix: use NanoLimbo's hashing algorithm to consume less RAM * fix: don't print every byte for the MapDataPacket * feat: notify user about packet preparing	2024-05-04 21:42:36 +02:00
Jones	0a5ce856f3	Small microoptimizations (#285 ) * fix: optimize experience bar and keepalive packets * fix: optimize chat message reading * feat: cache LoginSuccessPacket	2024-05-04 20:49:47 +02:00
Jones	261acbd9e2	Use experience bar instead of action bar (#284 )	2024-05-04 20:18:34 +02:00
Jones	595b1378ab	Release 2.0.28 (#282 )	2024-05-03 16:59:52 +02:00
AkkariinandMichel Elkenwaat	3012ed0d7a	Add experimental Geyser support (#281 ) * feat: added experimental geyser support. * feat: send a special `PlayerAbilities` packet for the bedrock client write 0x06 (`Flying` + `Allow Flying`) to prevent the bedrock clients falling during the `map-captcha` phase. After testing, it has been confirmed that the bedrock client is unable to attempt to de-fly status. So just add it. * fix: if the first move are success passed predicted. then don't reset tick. * fix: tick skipping is allowed for bedrock clients. * feat: fix limit & only set `bedrockSpawned` when client is bedrock. * feat: make geyser checks configurable * style: small codestyle improvements * style: make code more human-readable * fix: only check first packet if it's actually the first packet * fix: [wip] completely exclude geyser from the gravity check [ci skip] * style: fix comment * chore: update `zh` language file. [ci skip] * fix: Geyser users timing out because of a stupid mistake * fix: only skip vehicle state in position check * feat: add missing German translations [ci skip] * feat: add missing Czech translations [ci skip] * fix: make sure the vehicle check is recommended [ci skip] * style: inline some stuff for better readability * fix(geyser): completely skip gravity check for consistency [ci skip] * fix(geyser): skip vehicle packet order check (UDP can mess this up) * fix: add missing translations [ci skip] --------- Co-authored-by: Michel Elkenwaat <admin@jonesdev.xyz>	2024-05-02 14:20:21 +02:00
Akkariin	4ccecde901	Add config & messages files for Chinese Simplified (#280 ) * chore: add config & messages files for Chinese Simplified. * style: rename `cn` to `zh`. [ci skip]	2024-04-28 19:16:55 +02:00
AkkariinandMichel Elkenwaat	87fcfb68f3	1.20.5 Support (#278 ) * feat: support 1.20.5 * fix: vehicle & barrier block id * fix: missing abilities & remove entities packet id * refactor: merge RegistryBundlePacket into RegistryDataPacket * style: clean up some code * feat: implement transfer packet logic for 1.20.5+ * fix: check hostname before protocolVersion * fix: transfer configuration * fix: SetSlotPacket for 1.20.5 * chore: remove encoder/decoder debugging message. [ci skip] * style: remove double empty line [ci skip] --------- Co-authored-by: Michel Elkenwaat <admin@jonesdev.xyz>	2024-04-28 12:50:17 +02:00
Jones	a17b726798	Release 2.0.27 (#277 )	2024-04-25 16:57:21 +02:00
Jones	50d3b43f63	Don't fail players when disconnecting (#276 )	2024-04-24 15:19:29 +02:00
Jones	0ff0194894	Also check for PaddleBoat packets (#275 ) * feat: also check for PaddleBoat packets * fix: remove debug messages	2024-04-24 15:15:00 +02:00
dependabot[bot]	279fe2e3e9	Bump netty-all from 4.1.108.Final to 4.1.109.Final (#273 ) Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.108.Final to 4.1.109.Final. - [Commits](https://github.com/netty/netty/compare/netty-4.1.108.Final...netty-4.1.109.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>	2024-04-23 14:50:13 +02:00
Jones	ffd3a7e5c2	Improve performance through multi-threading (#271 ) * fix: optimize JVMProcessInformation#formatMemory * fix: formatting (spacing) in formatMemory * fix: don't re-serialize action bar format forever * fix: optimize chat and title notifications * feat: change task timers to run less tasks more efficiently * feat: run all scheduled tasks asynchronously * fix: small enable message issue * fix(velocity): don't unnecessarily store the handshake packet * fix: oh yes I love exclamation marks * feat: move handshake handling logic to common module * feat: move login handling logic to common module * fix(bungee): decoding error caused by sending wrong original packet * style: make FallbackChannelHandlerAdapter#initialLogin final * fix: rearrange task priorities and improve performance by removing dead code * fix: better debug if protocol is invalid * fix: update default read timeout value to prevent laggy players from being blacklisted * fix: move the unknown protocol version check to login	2024-04-23 14:49:56 +02:00
Jones	4474f44b0a	Release 2.0.26 (#269 )	2024-04-20 10:14:13 +02:00
Jones	b159947d6d	Recode max accounts per IP check (#268 )	2024-04-18 18:39:23 +02:00
Jones	a29dfa15e4	Implement max accounts per IP check on Bukkit (#266 ) * feat(bukkit): add max online per IP check * fix: remove debug message haha lol	2024-04-18 17:57:00 +02:00
Jones	cb9fe75db8	Allow user to manually verify players (#265 ) * feat: add /sonar verified add <ip> <uuid/username> * fix: remove useless and stupid local ip check * fix: use correct translation for add message	2024-04-18 17:55:09 +02:00
Jones	23815351f0	Release 2.0.25 (#261 )	2024-04-07 14:44:06 +02:00
Jones	5a68ea8af6	Restructure dependency management (#260 ) * feat: recode command invocation source system * feat: remove obsolete audience listener on Velocity * fix: invalid console action bar sending when uuid is null * feat: microoptimize InvocationSource#isPlayer * build: recode and restructure dependency management * build(bungee,bukkit): downgrade to adventure-platform 4.3.2 * build(all): minimize JAR (excluding api) * build: fix minimizing breaking kyori adventure * style: mark some api functions as internal as they would require relocating when used * build(bukkit): mark as folia supported * build: recode `build-sonar` task * fix: remove unused/outdated files * chore: I think I was dead when writing this * build(deps): load minimessage and serializer-gson using libby * refactor: remove some duplicate/unnecessary code	2024-04-07 14:38:40 +02:00
Jones	9b54b484fb	Update Russian translations (#259 )	2024-04-05 15:02:45 +02:00
Jones	4fa56f2f3c	Hide blacklist logs during attack (#257 )	2024-04-03 13:11:36 +02:00
Jones	51751584dc	Improve code readability and maintainability (#255 ) * style: add comments explaining certain functions/methods * style: add link to stackoverflow comment explaining memory formatting * style: add some more documentation and explanations to the API * style: improve Discord webhook API readability	2024-04-03 13:04:48 +02:00
Jones	3955f9bc8a	Improve verification limits and state system (#254 ) * fix: fail for disconnecting during verification * chore: update bot check failed message * feat: improve state, failing and blacklist system	2024-04-02 21:20:20 +02:00
Jones	e333162032	Implement vehicle mounting check (#251 ) * fix: recode captcha-on-fail mechanic * feat: remove unnecessary max-ping option * feat: [wip] vehicle check and other improvements * feat: add RemoveEntitiesPacket * fix: RemoveEntitiesPacket for 1.7 * fix: PlayerInputPacket for 1.7 * feat: validate jump and unmount state (but don't fail) * fix: RemoveEntitiesPacket not working on 1.17 * fix: boat entity type being broken on 1.13 * feat: [wip] support all versions (1.13-1.13.2 are broken) * fix: boat entity type for 1.13-1.13.2 * feat: add missing vehicle configurations * fix: wait 10s between each action bar on 1.7 * fix: remove unnecessary flush in KeepAlive * fix: only expect PlayerInput packets when needed	2024-03-30 19:16:27 +01:00
dependabot[bot]	b3a7f4de09	Bump netty-all from 4.1.107.Final to 4.1.108.Final (#248 ) Bumps [io.netty:netty-all](https://github.com/netty/netty) from 4.1.107.Final to 4.1.108.Final. - [Commits](https://github.com/netty/netty/compare/netty-4.1.107.Final...netty-4.1.108.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>	2024-03-25 13:45:29 +01:00
dependabot[bot]	5752f1e208	Bump lombok from 1.18.30 to 1.18.32 (#249 ) Bumps [org.projectlombok:lombok](https://github.com/projectlombok/lombok) from 1.18.30 to 1.18.32. - [Changelog](https://github.com/projectlombok/lombok/blob/master/doc/changelog.markdown) - [Commits](https://github.com/projectlombok/lombok/compare/v1.18.30...v1.18.32) --- updated-dependencies: - dependency-name: org.projectlombok:lombok 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>	2024-03-25 13:45:16 +01:00
MISHA	1c6ba7050d	Add a missed line to Russian translations (#247 )	2024-03-24 20:55:35 +01:00
MISHA	340d4a225d	Add the missing Russian language in messages (#245 ) * Update ru.yml * Update ru.yml	2024-03-24 20:39:10 +01:00
Jones	475bf28ecf	Release 2.0.24 (#244 )	2024-03-24 20:25:30 +01:00
Jones	9c29753084	Recode map CAPTCHA (#243 ) * feat: implement capja for CAPTCHA generation * feat: implement map color palette for 1.7.2-1.20.4	2024-03-24 20:17:18 +01:00
Jones	f0f5196fbe	Don't drop messages that aren't ByteBufs (#242 )	2024-03-22 14:01:32 +01:00
Jones	d98ce28a59	Implement missing packet limits (#241 )	2024-03-22 13:56:55 +01:00
MISHA	e0d5c67cdf	Fix translation error in the Russian language (#240 )	2024-03-16 11:25:43 +01:00