Send login command from proxy immediately

Related #1202

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -12,10 +12,6 @@ body:
       description: What behavior is observed?
     validations:
       required: true
-  - type: textarea
-    attributes:
-      label: What did you expect?
-      description: What behavior is expected?
   - type: textarea
     attributes:
       label: Steps to reproduce
@@ -36,7 +32,7 @@ body:
     attributes:
       label: Server log
       description: The error, stacktrace or link the complete log. You can use the links above for long versions.
-      placeholder: https://hastebin.com/ / https://gist.github.com/
+      placeholder: https://www.toptal.com/developers/hastebin / https://gist.github.com/
   - type: input
     attributes:
       label: Plugin version
@@ -59,9 +55,11 @@ body:
       label: Relevance
       description: Check list for previous tickets
       options:
-        - label: I tried the latest build (build refers to development builds not necessary a release version)
+        - label: |
+            I tried the [latest build](https://ci.codemc.io/job/Games647/job/FastLogin/) 
+            (build refers to development builds not necessary a release version; i.e. v1.10 is out of date)
           required: true
         - label: |
             I checked for existing tickets -
-            If there are, please vote them with a thumps reaction and not create new ones
+            If there are, please vote them with a thumbs reaction and not create new ones
           required: true

.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -1,30 +0,0 @@
----
-name: 💡 Enhancement request
-about: New feature or change request
-title: ''
-labels: 'enhancement'
-assignees: ''
-
----
-
-[//]: # (Lines in this format are considered as comments and will not be displayed.)
-
-[//]: # (Before reporting make sure you're running the **latest build** of the plugin and checked for existing issues!)
-
-[//]: # (This ticket is about suggestions for a feature or particular enhancement)
-
-### Is your feature request related to a problem? Please describe.
-
-[//]: # (A clear and concise description of what the problem is. Ex. I'm always frustrated when [...])
-
-### Describe the solution you'd like
-
-[//]: # (A clear and concise description of what you want to happen.)
-
-### Describe alternatives you've considered
-
-[//]: # (A clear and concise description of any alternative solutions or features you've considered.)
-
-### Additional context
-
-[//]: # (Add any other context or screenshots about the feature request here.)

.github/ISSUE_TEMPLATE/enhancement_request.yaml

@@ -0,0 +1,43 @@
+name: 💡 Enhancement request
+description: New feature or change request
+labels: [ enhancement ]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        This ticket is about suggestions for a feature or particular enhancement. 
+        Feedback about this form is appreciated.
+  - type: textarea
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+  - type: textarea
+    attributes:
+      label: Describe alternatives you've considered
+      description: A clear and concise description of any alternative solutions or features you've considered.
+  - type: dropdown
+    attributes:
+      label: Platform
+      description: Server software - choose your proxy software if you have multiple servers
+      options:
+        - Spigot
+        - BungeeCord
+        - Velocity
+        - All / Shared
+    validations:
+      required: true
+  - type: checkboxes
+    attributes:
+      label: Relevance
+      description: Check list for previous tickets
+      options:
+        - label: |
+            I checked for existing tickets -
+            If there are, please vote them with a thumbs reaction and not create new ones
+          required: true

.github/dependabot.yml

@@ -10,7 +10,18 @@ updates:
       interval: "monthly"
 
   # Maven project
-  - package-ecosystem: maven
+  - package-ecosystem: "maven"
     directory: "/"
     schedule:
-      interval: weekly
+      interval: "monthly"
+
+    groups:
+      production-dependencies:
+        dependency-type: "production"
+      development-dependencies:
+        dependency-type: "development"
+        exclude-patterns:
+          # Create single PR for these
+          # Plugin require special evaluation about their compatibility
+          - "com.lenis0012.bukkit:loginsecurity"
+          - "com.comphenix.protocol:ProtocolLib"

.github/workflows/codeql-analysis.yml

@@ -4,11 +4,11 @@
 name: "CodeQL"
 
 on:
-  # Scan only for push on the primary branch for now
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
+  workflow_run:
+    workflows: ["Maven Build"]
+    branches: [main]
+    types:
+      - completed
 
 jobs:
   # job i
@@ -20,9 +20,12 @@ jobs:
     # Environment
     runs-on: ubuntu-latest
 
+    timeout-minutes: ${{ (matrix.language == 'swift' && 120) || 360 }}
+
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+
     permissions:
-      actions: read
-      contents: read
+      # Only allow 'write' permission for security, then all others default to read only
       security-events: write
 
     strategy:
@@ -33,28 +36,29 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
-
-      # Setup Java
-      - name: Set up JDK
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'temurin'
-          java-version: 19
-          cache: 'maven'
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@v3
         with:
           languages: ${{ matrix.language }}
 
-      # Auto build attempts to build any compiled languages  (C/C++, C#, or Java).
-      # If this step fails, then you should remove it and run the build manually (see below)
-      - name: Autobuild
-        uses: github/codeql-action/autobuild@v2
+      # Setup Java
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version-file: '.java-version'
+          cache: 'maven'
+
+      # Manually start the autobuild process, because autobuild always selects Java 8 as build toolchain, but
+      # we are doing cross-crompiling from a newer Java version
+      - name: Build with Maven
+        # Extracted from autobuild
+        run: mvn package -f "pom.xml" --batch-mode -V -e -Dfindbugs.skip -Dcheckstyle.skip -Dpmd.skip=true -Dspotbugs.skip -Denforcer.skip -Dmaven.javadoc.skip -DskipTests -Dmaven.test.skip.exec -Dlicense.skip=true -Drat.skip=true -Dspotless.check.skip=true -t /home/runner/.m2/toolchains.xml
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@v3
         with:
           category: "/language:${{matrix.language}}"

.github/workflows/maven.yml

@@ -21,19 +21,20 @@ jobs:
     # Environment image - always use the newest OS
     runs-on: ubuntu-latest
     permissions:
+      # With at least one permission given, all default to read
       contents: read
 
     # Run steps
     steps:
       # Pull changes
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Setup Java
       - name: Set up JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 19
+          java-version-file: '.java-version'
           cache: 'maven'
 
       # Build and test (included in package)
@@ -41,3 +42,26 @@ jobs:
         # Run non-interactive, package (with compile+test),
         # ignore snapshot updates, because they are likely to have breaking changes, enforce checksums
         run: mvn test --batch-mode --threads 2.0C --no-snapshot-updates --strict-checksums --file pom.xml
+
+  dependency:
+    runs-on: ubuntu-latest
+    permissions:
+      # Write only necessary for dependency submission all others then default to read
+      contents: write
+
+    # Run steps
+    steps:
+      # Pull changes
+      - uses: actions/checkout@v4
+
+      # Setup Java
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version-file: '.java-version'
+          cache: 'maven'
+
+      - name: Submit Dependency Snapshot
+        if: ${{ github.event_name == 'push' }}
+        uses: advanced-security/maven-dependency-submission-action@v4.0.3

.java-version

@@ -0,0 +1,2 @@
+# Latest GitHub Action java release that is installed on the runners
+21

CHANGELOG.md

@@ -1,3 +1,29 @@
+# 2.0
+
+## Major changes
+
+* Bumped minimum Java version to 11 make use of modern Java performance features
+    * Report back if really still need the old versions
+    * Then we could make use of versioned code, but that requires more coding effort
+
+## Added
+
+* Support for HTTP/2 for contacting Mojang
+
+## Changed
+
+* Updated many dependencies
+
+## Removed
+
+Dropped some features listed below. Please contact us if you still need them
+
+* Dropped Java support < 11
+* Removed configuration option to add multiple outgoing IPv4 towards Mojang
+* Dropped support for ProtocolSupport seems to unsupported
+
+[...] A lot of changes
+
 ### 1.11
 
 * TODO: Replace reflection with methodhandles

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2023 games647 and contributors
+Copyright (c) 2015-2024 games647 and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -8,14 +8,11 @@ So they don't need to enter passwords. This is also called auto login (auto-logi
 * Detect paid accounts from others
 * Automatically login paid accounts (premium)
 * Support various of auth plugins
-* Cauldron support
-* Forge/Sponge message support
 * Premium UUID support
 * Forward skins
 * Detect username changed and will update the existing database record
-* BungeeCord support
+* BungeeCord/Velocity support
 * Auto register new premium players
-* Plugin: ProtocolSupport is supported and can be used as an alternative to ProtocolLib
 * No client modifications needed
 * Good performance by using async operations
 * Locale messages
@@ -46,6 +43,7 @@ You can download them from here: https://ci.codemc.org/job/Games647/job/FastLogi
 
     fastlogin.bukkit.command.premium
     fastlogin.bukkit.command.cracked
+
     fastlogin.command.premium.other
     fastlogin.command.cracked.other
 
@@ -60,13 +58,15 @@ Possible values: `Premium`, `Cracked`, `Unknown`
 
 ## Requirements
 
-* Java 17+
+* Java: 21+ recommended for improved multi-threading code by FastLogin
+  * Spigot: 8+
+  * BungeeCord and Velocity: 17+
 * Server software in offlinemode:
   * Spigot (or a fork e.g. Paper) 1.8.8+
     * Protocol plugin:
-      * [ProtocolLib 5.0+](https://www.spigotmc.org/resources/protocollib.1997/) or
+      * [ProtocolLib 5.2+](https://www.spigotmc.org/resources/protocollib.1997/) or
       * [ProtocolSupport](https://www.spigotmc.org/resources/protocolsupport.7201/)
-  * Latest BungeeCord (or a fork e.g. Waterfall)
+  * Latest BungeeCord (or a fork e.g. Waterfall) or Velocity proxy
 * An auth plugin.
 
 ### Supported auth plugins
@@ -85,7 +85,6 @@ Possible values: `Premium`, `Cracked`, `Unknown`
 #### BungeeCord/Waterfall
 
 * [BungeeAuth](https://www.spigotmc.org/resources/bungeeauth.493/)
-* [BungeeAuthenticator](https://www.spigotmc.org/resources/bungeecordauthenticator.87669/)
 
 ## Network requests
 
@@ -101,8 +100,8 @@ This plugin performs network requests to:
 ### Spigot/Paper
 
 1. Download and install ProtocolLib/ProtocolSupport
-2. Download and install FastLogin (or `FastLoginBukkit` for newer versions)
-3. Set your server in offline mode by setting the value `onlinemode` in your server.properties to false
+2. Download and install `FastLoginBukkit`
+3. Set your server in offline mode by setting the value `onlinemode` in your server.properties to `false`
 
 ### BungeeCord/Waterfall or Velocity
 
@@ -117,8 +116,8 @@ Install the plugin on both platforms, that is proxy (BungeeCord or Velocity) and
 4. Activate ip forwarding in your proxy config
 5. Check your database settings in the config of FastLogin on your proxy
     * The proxies only ship with a limited set of drivers where Spigot supports more. Therefore, these are supported:
-    * BungeeCord: `com.mysql.jdbc.Driver` for MySQL/MariaDB
-    * Velocity: `fastlogin.mariadb.jdbc.Driver` for MySQL/MariaDB
+    * BungeeCord: `mysql` for MySQL/MariaDB
+    * Velocity: `mariadb` for MySQL/MariaDB
     * Note the embedded file storage SQLite is not available
     * MySQL/MariaDB requires an external database server running. Check your server provider if there is one available
    or install one.

bukkit/pom.xml

@@ -4,7 +4,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2023 games647 and contributors
+    Copyright (c) 2015-2024 games647 and contributors
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
@@ -30,7 +30,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <properties>
-        <nettyVersion>4.1.79.Final</nettyVersion>
+        <maven.compiler.release>8</maven.compiler.release>
     </properties>
 
     <parent>
@@ -50,11 +50,15 @@
         <plugins>
             <plugin>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>3.5.3</version>
                 <configuration>
                     <createDependencyReducedPom>false</createDependencyReducedPom>
                     <shadedArtifactAttached>false</shadedArtifactAttached>
                     <relocations>
+                        <relocation>
+                            <pattern>org.yaml.snakeyaml</pattern>
+                            <shadedPattern>fastlogin.yaml</shadedPattern>
+                        </relocation>
                         <relocation>
                             <pattern>com.zaxxer.hikari</pattern>
                             <shadedPattern>fastlogin.hikari</shadedPattern>
@@ -94,7 +98,6 @@
                         <filter>
                             <artifact>*:*</artifact>
                             <excludes>
-                                <exclude>META-INF/MANIFEST.MF</exclude>
                                 <exclude>**/module-info.class</exclude>
                             </excludes>
                         </filter>
@@ -113,7 +116,7 @@
     </build>
 
     <repositories>
-        <!-- PaperSpigot API and PaperLib -->
+        <!-- PaperSpigot API, PaperLib, datafixupper and bungeecord-chat -->
         <repository>
             <id>papermc</id>
             <url>https://papermc.io/repo/repository/maven-public/</url>
@@ -123,6 +126,9 @@
         <repository>
             <id>dmulloy2-repo</id>
             <url>https://repo.dmulloy2.net/repository/public/</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
         </repository>
 
         <!-- AuthMe Reloaded, xAuth and LoginSecurity -->
@@ -165,7 +171,7 @@
         <dependency>
             <groupId>io.papermc.paper</groupId>
             <artifactId>paper-api</artifactId>
-            <version>1.19-R0.1-SNAPSHOT</version>
+            <version>1.20.6-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
             <!-- Use our own newer api version -->
             <exclusions>
@@ -173,13 +179,25 @@
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
+                <exclusion>
+                    <groupId>org.ow2.asm</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.apache.maven</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.apache.logging.log4j</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
             </exclusions>
         </dependency>
 
         <dependency>
             <groupId>com.mojang</groupId>
             <artifactId>datafixerupper</artifactId>
-            <version>5.0.28</version>
+            <version>7.1.15</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
@@ -193,7 +211,7 @@
         <dependency>
             <groupId>com.comphenix.protocol</groupId>
             <artifactId>ProtocolLib</artifactId>
-            <version>5.0.0</version>
+            <version>5.1.0</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
@@ -264,7 +282,7 @@
         <dependency>
             <groupId>me.clip</groupId>
             <artifactId>placeholderapi</artifactId>
-            <version>2.11.3</version>
+            <version>2.11.5</version>
             <scope>provided</scope>
             <optional>true</optional>
             <exclusions>
@@ -293,7 +311,7 @@
         <dependency>
             <groupId>com.lenis0012.bukkit</groupId>
             <artifactId>loginsecurity</artifactId>
-            <version>3.1.1</version>
+            <version>3.3.0</version>
             <scope>provided</scope>
             <optional>true</optional>
             <exclusions>
@@ -364,29 +382,7 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcprov-jdk18on</artifactId>
-            <version>1.72</version>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>io.netty</groupId>
-            <artifactId>netty-transport</artifactId>
-            <version>${nettyVersion}</version>
-            <scope>provided</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>io.netty</groupId>
-            <artifactId>netty-codec</artifactId>
-            <version>${nettyVersion}</version>
-            <scope>test</scope>
-        </dependency>
-
-        <!-- Provided by the spigot, required for testing ProtocolLib -->
-        <dependency>
-            <groupId>commons-lang</groupId>
-            <artifactId>commons-lang</artifactId>
-            <version>2.6</version>
+            <version>1.78.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/BukkitLoginSession.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -26,7 +26,7 @@
 package com.github.games647.fastlogin.bukkit;
 
 import com.github.games647.craftapi.model.skin.SkinProperty;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.core.shared.LoginSession;
 import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.jetbrains.annotations.Nullable;
@@ -47,7 +47,6 @@ public class BukkitLoginSession extends LoginSession {
     private final ClientPublicKey clientPublicKey;
 
     private boolean verified;
-
     private SkinProperty skinProperty;
 
     public BukkitLoginSession(String username, byte[] verifyToken, ClientPublicKey publicKey, boolean registered,
@@ -109,7 +108,7 @@ public class BukkitLoginSession extends LoginSession {
      *
      * @param verified whether the player has valid session
      */
-    public synchronized void setVerified(boolean verified) {
+    public synchronized void setVerifiedPremium(boolean verified) {
         this.verified = verified;
     }
 
@@ -118,7 +117,7 @@ public class BukkitLoginSession extends LoginSession {
      *
      * @return whether the player has a valid session
      */
-    public synchronized boolean isVerified() {
+    public synchronized boolean isVerifiedPremium() {
         return verified;
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/BukkitScheduler.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,7 +25,7 @@
  */
 package com.github.games647.fastlogin.bukkit;
 
-import com.github.games647.fastlogin.core.AsyncScheduler;
+import com.github.games647.fastlogin.core.scheduler.AsyncScheduler;
 import org.bukkit.Bukkit;
 import org.bukkit.plugin.Plugin;
 import org.slf4j.Logger;
@@ -39,7 +39,7 @@ public class BukkitScheduler extends AsyncScheduler {
     public BukkitScheduler(Plugin plugin, Logger logger) {
         super(logger, command -> Bukkit.getScheduler().runTaskAsynchronously(plugin, command));
 
-        syncExecutor = r -> Bukkit.getScheduler().runTask(plugin, r);
+        syncExecutor = task -> Bukkit.getScheduler().runTask(plugin, task);
     }
 
     public Executor getSyncExecutor() {

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/FastLoginBukkit.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,15 +25,13 @@
  */
 package com.github.games647.fastlogin.bukkit;
 
-import com.comphenix.protocol.ProtocolLibrary;
+import com.github.games647.fastlogin.bukkit.auth.AuthenticationBackend;
+import com.github.games647.fastlogin.bukkit.auth.ConnectionListener;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.ProtocolAuthentication;
+import com.github.games647.fastlogin.bukkit.auth.proxy.ProxyAuthentication;
 import com.github.games647.fastlogin.bukkit.command.CrackedCommand;
 import com.github.games647.fastlogin.bukkit.command.PremiumCommand;
-import com.github.games647.fastlogin.bukkit.listener.ConnectionListener;
-import com.github.games647.fastlogin.bukkit.listener.PaperCacheListener;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.ProtocolLibListener;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.SkinApplyListener;
-import com.github.games647.fastlogin.bukkit.listener.protocolsupport.ProtocolSupportListener;
-import com.github.games647.fastlogin.bukkit.task.DelayedAuthHook;
+import com.github.games647.fastlogin.bukkit.hook.DelayedAuthHook;
 import com.github.games647.fastlogin.core.CommonUtil;
 import com.github.games647.fastlogin.core.PremiumStatus;
 import com.github.games647.fastlogin.core.hooks.bedrock.BedrockService;
@@ -41,6 +39,7 @@ import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
 import com.github.games647.fastlogin.core.hooks.bedrock.GeyserService;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
 import com.github.games647.fastlogin.core.shared.PlatformPlugin;
+import lombok.Getter;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
@@ -53,6 +52,9 @@ import org.slf4j.Logger;
 
 import java.net.InetSocketAddress;
 import java.nio.file.Path;
+import java.time.Duration;
+import java.util.Collection;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Optional;
 import java.util.UUID;
@@ -65,19 +67,34 @@ import java.util.concurrent.ConcurrentMap;
 public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<CommandSender> {
 
     //1 minutes should be enough as a timeout for bad internet connection (Server, Client and Mojang)
-    private final ConcurrentMap<String, BukkitLoginSession> loginSession = CommonUtil.buildCache(1, -1);
+    private final ConcurrentMap<String, BukkitLoginSession> loginSession = CommonUtil.buildCache(
+            Duration.ofMinutes(1), -1
+    );
+
+    @Getter
     private final Map<UUID, PremiumStatus> premiumPlayers = new ConcurrentHashMap<>();
     private final Logger logger;
 
-    private boolean serverStarted;
-    private BungeeManager bungeeManager;
     private final BukkitScheduler scheduler;
+
+    @Getter
+    private final Collection<UUID> pendingConfirms = new HashSet<>();
+
+    @Getter
     private FastLoginCore<Player, CommandSender, FastLoginBukkit> core;
+
+    @Getter
     private FloodgateService floodgateService;
     private GeyserService geyserService;
 
     private PremiumPlaceholder premiumPlaceholder;
 
+    @Getter
+    private AuthenticationBackend backend;
+
+    @Getter
+    private boolean initialized;
+
     public FastLoginBukkit() {
         this.logger = CommonUtil.initializeLoggerService(getLogger());
         this.scheduler = new BukkitScheduler(this, logger);
@@ -99,52 +116,48 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
             setEnabled(false);
         }
 
-        bungeeManager = new BungeeManager(this);
-        bungeeManager.initialize();
-
-        PluginManager pluginManager = getServer().getPluginManager();
-        if (bungeeManager.isEnabled()) {
-            markInitialized();
-        } else {
-            if (!core.setupDatabase()) {
-                setEnabled(false);
-                return;
-            }
-
-            if (pluginManager.isPluginEnabled("ProtocolSupport")) {
-                pluginManager.registerEvents(new ProtocolSupportListener(this, core.getAntiBot()), this);
-            } else if (pluginManager.isPluginEnabled("ProtocolLib")) {
-                ProtocolLibListener.register(this, core.getAntiBot(), core.getConfig().getBoolean("verifyClientKeys"));
-
-                //if server is using paper - we need to set the skin at pre login anyway, so no need for this listener
-                if (!isPaper() && getConfig().getBoolean("forwardSkin")) {
-                    pluginManager.registerEvents(new SkinApplyListener(this), this);
-                }
-            } else {
-                logger.warn("Either ProtocolLib or ProtocolSupport have to be installed if you don't use BungeeCord");
-                setEnabled(false);
-                return;
-            }
+        backend = initializeAuthenticationBackend();
+        if (backend == null) {
+            logger.warn("Either ProtocolLib or ProtocolSupport have to be installed if you don't use BungeeCord");
+            setEnabled(false);
+            return;
         }
 
-        //delay dependency setup because we load the plugin very early where plugins are initialized yet
-        getServer().getScheduler().runTaskLater(this, new DelayedAuthHook(this), 5L);
+        backend.init(getServer().getPluginManager());
+        PluginManager pluginManager = getServer().getPluginManager();
 
         pluginManager.registerEvents(new ConnectionListener(this), this);
 
-        //if server is using paper - we need to add one more listener to correct the user cache usage
-        if (isPaper()) {
-            pluginManager.registerEvents(new PaperCacheListener(this), this);
-        }
-
-        //register commands using a unique name
-        Optional.ofNullable(getCommand("premium")).ifPresent(c -> c.setExecutor(new PremiumCommand(this)));
-        Optional.ofNullable(getCommand("cracked")).ifPresent(c -> c.setExecutor(new CrackedCommand(this)));
+        registerCommands();
 
         if (pluginManager.isPluginEnabled("PlaceholderAPI")) {
             premiumPlaceholder = new PremiumPlaceholder(this);
             premiumPlaceholder.register();
         }
+
+        // delay dependency setup because we load the plugin very early where plugins are initialized yet
+        getServer().getScheduler().runTaskLater(this, new DelayedAuthHook(this), 5L);
+    }
+
+    private AuthenticationBackend initializeAuthenticationBackend() {
+        AuthenticationBackend proxyVerifier = new ProxyAuthentication(this);
+        if (proxyVerifier.isAvailable()) {
+            return proxyVerifier;
+        }
+
+        logger.warn("Disabling Minecraft proxy configuration. Assuming direct connections from now on.");
+        AuthenticationBackend protocolAuthentication = new ProtocolAuthentication(this);
+        if (protocolAuthentication.isAvailable()) {
+            return protocolAuthentication;
+        }
+
+        return null;
+    }
+
+    private void registerCommands() {
+        //register commands using a unique name
+        Optional.ofNullable(getCommand("premium")).ifPresent(c -> c.setExecutor(new PremiumCommand(this)));
+        Optional.ofNullable(getCommand("cracked")).ifPresent(c -> c.setExecutor(new CrackedCommand(this)));
     }
 
     private boolean initializeFloodgate() {
@@ -172,25 +185,13 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
             core.close();
         }
 
-        if (bungeeManager != null) {
-            bungeeManager.cleanup();
+        if (backend != null) {
+            backend.stop();
         }
 
         if (premiumPlaceholder != null && getServer().getPluginManager().isPluginEnabled("PlaceholderAPI")) {
-            try {
-                premiumPlaceholder.unregister();
-            } catch (Exception | NoSuchMethodError exception) {
-                logger.error("Failed to unregister placeholder", exception);
-            }
+            premiumPlaceholder.unregister();
         }
-
-        if (getServer().getPluginManager().isPluginEnabled("ProtocolLib")) {
-            ProtocolLibrary.getProtocolManager().getAsynchronousManager().unregisterAsyncHandlers(this);
-        }
-    }
-
-    public FastLoginCore<Player, CommandSender, FastLoginBukkit> getCore() {
-        return core;
     }
 
     /**
@@ -222,12 +223,24 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         loginSession.remove(id);
     }
 
-    public Map<UUID, PremiumStatus> getPremiumPlayers() {
-        return premiumPlayers;
-    }
-
     /**
      * Fetches the premium status of an online player.
+     * {@snippet :
+     * // Bukkit's players object after successful authentication i.e. PlayerJoinEvent
+     * // except for proxies like BungeeCord and Velocity where the details are sent delayed (1-2 seconds)
+     * Player player;
+     * PremiumStatus status = JavaPlugin.getPlugin(FastLoginBukkit.class).getStatus(player.getUniqueId());
+     * switch (status) {
+     *     case CRACKED:
+     *         // player is offline
+     *         break;
+     *     case PREMIUM:
+     *         // account is premium and player passed the verification
+     *         break;
+     *     case UNKNOWN:
+     *         // no record about this player
+     * }
+     * }
      *
      * @param onlinePlayer player that is currently online player (play state)
      * @return the online status or unknown if an error happened, the player isn't online or BungeeCord doesn't send
@@ -237,24 +250,6 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         return premiumPlayers.getOrDefault(onlinePlayer, PremiumStatus.UNKNOWN);
     }
 
-    /**
-     * Wait before the server is fully started. This is workaround, because connections right on startup are not
-     * injected by ProtocolLib
-     *
-     * @return true if ProtocolLib can now intercept packets
-     */
-    public boolean isServerFullyStarted() {
-        return serverStarted;
-    }
-
-    public void markInitialized() {
-        this.serverStarted = true;
-    }
-
-    public BungeeManager getBungeeManager() {
-        return bungeeManager;
-    }
-
     @Override
     public Path getPluginFolder() {
         return getDataFolder().toPath();
@@ -287,12 +282,21 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         return Bukkit.getServer().getPluginManager().getPlugin(name) != null;
     }
 
-    public FloodgateService getFloodgateService() {
-        return floodgateService;
+    public void setInitialized(boolean hookFound) {
+        if (backend instanceof ProxyAuthentication) {
+            logger.info("BungeeCord setting detected. No auth plugin is required");
+        } else if (!hookFound) {
+            logger.warn("No auth plugin were found by this plugin "
+                    + "(other plugins could hook into this after the initialization of this plugin)"
+                    + "and BungeeCord is deactivated. "
+                    + "Either one or both of the checks have to pass in order to use this plugin");
+        }
+
+        initialized = true;
     }
 
-    public GeyserService getGeyserService() {
-        return geyserService;
+    public ProxyAuthentication getBungeeManager() {
+        return (ProxyAuthentication) backend;
     }
 
     @Override
@@ -300,19 +304,7 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         if (floodgateService != null) {
             return floodgateService;
         }
+
         return geyserService;
     }
-
-    private boolean isPaper() {
-        return isClassAvailable("com.destroystokyo.paper.PaperConfig").isPresent()
-                || isClassAvailable("io.papermc.paper.configuration.Configuration").isPresent();
-    }
-
-    private Optional<Class<?>> isClassAvailable(String clazzName) {
-        try {
-            return Optional.of(Class.forName(clazzName));
-        } catch (ClassNotFoundException e) {
-            return Optional.empty();
-        }
-    }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/PremiumPlaceholder.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -74,11 +74,13 @@ public class PremiumPlaceholder extends PlaceholderExpansion {
 
     @Override
     public @NotNull String getAuthor() {
+        //noinspection deprecation
         return String.join(", ", plugin.getDescription().getAuthors());
     }
 
     @Override
     public @NotNull String getVersion() {
+        //noinspection deprecation
         return plugin.getDescription().getVersion();
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/AuthenticationBackend.java

@@ -0,0 +1,37 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth;
+
+import org.bukkit.plugin.PluginManager;
+
+public interface AuthenticationBackend {
+
+    boolean isAvailable();
+
+    void init(PluginManager pluginManager);
+
+    void stop();
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/ConnectionListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,23 +23,17 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener;
+package com.github.games647.fastlogin.bukkit.auth;
 
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.task.FloodgateAuthTask;
-import com.github.games647.fastlogin.bukkit.task.ForceLoginTask;
 import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerLoginEvent;
-import org.bukkit.event.player.PlayerLoginEvent.Result;
 import org.bukkit.event.player.PlayerQuitEvent;
-import org.bukkit.metadata.Metadatable;
 import org.geysermc.floodgate.api.player.FloodgatePlayer;
 
 /**
@@ -56,14 +50,6 @@ public class ConnectionListener implements Listener {
         this.plugin = plugin;
     }
 
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerLogin(PlayerLoginEvent loginEvent) {
-        removeBlockedStatus(loginEvent.getPlayer());
-        if (loginEvent.getResult() == Result.ALLOWED && !plugin.isServerFullyStarted()) {
-            loginEvent.disallow(Result.KICK_OTHER, plugin.getCore().getMessage("not-started"));
-        }
-    }
-
     @EventHandler(ignoreCancelled = true)
     public void onPlayerJoin(PlayerJoinEvent joinEvent) {
         Player player = joinEvent.getPlayer();
@@ -102,21 +88,13 @@ public class ConnectionListener implements Listener {
             Runnable forceLoginTask = new ForceLoginTask(plugin.getCore(), player, session);
             Bukkit.getScheduler().runTaskAsynchronously(plugin, forceLoginTask);
         }
-
-        plugin.getBungeeManager().markJoinEventFired(player);
     }
 
     @EventHandler
     public void onPlayerQuit(PlayerQuitEvent quitEvent) {
         Player player = quitEvent.getPlayer();
 
-        removeBlockedStatus(player);
-        plugin.getCore().getPendingConfirms().remove(player.getUniqueId());
+        plugin.getPendingConfirms().remove(player.getUniqueId());
         plugin.getPremiumPlayers().remove(player.getUniqueId());
-        plugin.getBungeeManager().cleanup(player);
-    }
-
-    private void removeBlockedStatus(Metadatable player) {
-        player.removeMetadata(plugin.getName(), plugin);
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/FloodgateAuthTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.task;
+package com.github.games647.fastlogin.bukkit.auth;
 
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
@@ -49,7 +49,7 @@ public class FloodgateAuthTask extends FloodgateManagement<Player, CommandSender
         BukkitLoginSession session = new BukkitLoginSession(player.getName(), isRegistered, profile);
 
         // enable auto login based on the value of 'autoLoginFloodgate' in config.yml
-        session.setVerified(isAutoAuthAllowed(autoLoginFloodgate));
+        session.setVerifiedPremium(isAutoAuthAllowed(autoLoginFloodgate));
 
         // run login task
         Runnable forceLoginTask = new ForceLoginTask(core.getPlugin().getCore(), player, session);

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/ForceLoginTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.task;
+package com.github.games647.fastlogin.bukkit.auth;
 
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
@@ -80,7 +80,7 @@ public class ForceLoginTask extends ForceLoginManagement<Player, CommandSender,
 
     @Override
     public void onForceActionSuccess(LoginSession session) {
-        if (core.getPlugin().getBungeeManager().isEnabled()) {
+        if (core.getPlugin().getBungeeManager().isAvailable()) {
             core.getPlugin().getBungeeManager().sendPluginMessage(player, new SuccessMessage());
         }
     }
@@ -103,6 +103,6 @@ public class ForceLoginTask extends ForceLoginManagement<Player, CommandSender,
 
     @Override
     public boolean isOnlineMode() {
-        return session.isVerified();
+        return session.isVerifiedPremium();
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/InetUtils.java

@@ -0,0 +1,63 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth;
+
+import java.net.InetAddress;
+
+public final class InetUtils {
+
+    private InetUtils() {
+        // Utility
+    }
+
+    /**
+     * Verifies if the given IP address is from the local network
+     *
+     * @param address IP address
+     * @return true if address is from local network or even from the device itself (loopback)
+     */
+    public static boolean isLocalAddress(InetAddress address) {
+        // Loopback addresses like 127.0.* (IPv4) or [::1] (IPv6)
+        return address.isLoopbackAddress()
+                // Example: 10.0.0.0, 172.16.0.0, 192.168.0.0, fec0::/10 (deprecated)
+                // Ref: https://en.wikipedia.org/wiki/IP_address#Private_addresses
+                || address.isSiteLocalAddress()
+                // Example: 169.254.0.0/16, fe80::/10
+                // Ref: https://en.wikipedia.org/wiki/IP_address#Address_autoconfiguration
+                || address.isLinkLocalAddress()
+                // non deprecated unique site-local that java doesn't check yet -> fc00::/7
+                || isIPv6UniqueSiteLocal(address);
+    }
+
+    private static boolean isIPv6UniqueSiteLocal(InetAddress address) {
+        // ref: https://en.wikipedia.org/wiki/Unique_local_address
+
+        // currently undefined but could be used in the near future fc00::/8
+        return (address.getAddress()[0] & 0xFF) == 0xFC
+                // in use for unique site-local fd00::/8
+                || (address.getAddress()[0] & 0xFF) == 0xFD;
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/LocalAuthentication.java

@@ -0,0 +1,70 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth;
+
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.SkinApplyListener;
+import org.bukkit.plugin.PluginManager;
+
+import java.util.Optional;
+
+public abstract class LocalAuthentication implements AuthenticationBackend {
+
+    protected final FastLoginBukkit plugin;
+
+    protected LocalAuthentication(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    @Override
+    public void init(PluginManager pluginManager) {
+        if (!plugin.getCore().setupDatabase()) {
+            plugin.setEnabled(false);
+            return;
+        }
+
+        // if server is using paper - we need to add one more listener to correct the user cache usage
+        if (isPaper()) {
+            pluginManager.registerEvents(new PaperCacheListener(plugin), plugin);
+        } else if (plugin.getConfig().getBoolean("forwardSkin")) {
+            //if server is using paper - we need to set the skin at pre login anyway, so no need for this listener
+            pluginManager.registerEvents(new SkinApplyListener(plugin), plugin);
+        }
+    }
+
+    private boolean isPaper() {
+        return isClassAvailable("com.destroystokyo.paper.PaperConfig").isPresent()
+                || isClassAvailable("io.papermc.paper.configuration.Configuration").isPresent();
+    }
+
+    private Optional<Class<?>> isClassAvailable(String clazzName) {
+        try {
+            return Optional.of(Class.forName(clazzName));
+        } catch (ClassNotFoundException e) {
+            return Optional.empty();
+        }
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/PaperCacheListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener;
+package com.github.games647.fastlogin.bukkit.auth;
 
 import com.destroystokyo.paper.profile.ProfileProperty;
 import com.github.games647.craftapi.model.skin.Textures;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/EncryptionUtil.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,10 +23,10 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.google.common.hash.Hasher;
 import com.google.common.hash.Hashing;
 import com.google.common.io.Resources;
@@ -70,7 +70,7 @@ final class EncryptionUtil {
     public static final int VERIFY_TOKEN_LENGTH = 4;
     public static final String KEY_PAIR_ALGORITHM = "RSA";
 
-    private static final int RSA_LENGTH = 1_024;
+    private static final int RSA_LENGTH = 2_048;
 
     private static final PublicKey MOJANG_SESSION_KEY;
     private static final int LINE_LENGTH = 76;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/NameCheckTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,14 +23,14 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.events.PacketEvent;
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.bukkit.event.BukkitFastLoginPreLoginEvent;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.core.shared.JoinManagement;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPreLoginEvent;
 import com.github.games647.fastlogin.core.storage.StoredProfile;
@@ -97,7 +97,7 @@ public class NameCheckTask extends JoinManagement<Player, CommandSender, Protoco
         }
 
         String ip = player.getAddress().getAddress().getHostAddress();
-        core.getPendingLogin().put(ip + username, new Object());
+        core.addLoginAttempt(ip, username);
 
         byte[] verify = source.getVerifyToken();
         ClientPublicKey clientKey = source.getClientKey();

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/ProtocolAuthentication.java

@@ -0,0 +1,72 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
+
+import com.comphenix.protocol.ProtocolLibrary;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.LocalAuthentication;
+import com.github.games647.fastlogin.core.antibot.AntiBotService;
+import com.github.games647.fastlogin.core.shared.FastLoginCore;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.bukkit.plugin.PluginManager;
+
+public class ProtocolAuthentication extends LocalAuthentication implements Listener {
+
+    public ProtocolAuthentication(FastLoginBukkit plugin) {
+        super(plugin);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return plugin.getServer().getPluginManager().isPluginEnabled("ProtocolLib");
+    }
+
+    @Override
+    public void init(PluginManager pluginManager) {
+        pluginManager.registerEvents(this, plugin);
+
+        FastLoginCore<Player, CommandSender, FastLoginBukkit> core = plugin.getCore();
+        AntiBotService antiBotService = core.getAntiBotService();
+        ProtocolLibListener.register(plugin, antiBotService,  core.getConfig().getBoolean("verifyClientKeys"));
+    }
+
+    @Override
+    public void stop() {
+        ProtocolLibrary.getProtocolManager().getAsynchronousManager().unregisterAsyncHandlers(plugin);
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerLogin(PlayerLoginEvent loginEvent) {
+        if (loginEvent.getResult() == PlayerLoginEvent.Result.ALLOWED && !plugin.isInitialized()) {
+            loginEvent.disallow(PlayerLoginEvent.Result.KICK_OTHER, plugin.getCore().getMessage("not-started"));
+        }
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/ProtocolLibListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.ProtocolLibrary;
@@ -32,6 +32,7 @@ import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.injector.PacketFilterManager;
 import com.comphenix.protocol.injector.player.PlayerInjectionHandler;
+import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.reflect.accessors.Accessors;
 import com.comphenix.protocol.reflect.accessors.FieldAccessor;
@@ -41,7 +42,7 @@ import com.comphenix.protocol.wrappers.Converters;
 import com.comphenix.protocol.wrappers.WrappedGameProfile;
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.core.antibot.AntiBotService;
 import com.github.games647.fastlogin.core.antibot.AntiBotService.Action;
 import com.mojang.datafixers.util.Either;
@@ -51,6 +52,7 @@ import io.netty.util.AttributeKey;
 import lombok.val;
 import org.bukkit.entity.Player;
 import org.geysermc.floodgate.api.player.FloodgatePlayer;
+import org.jetbrains.annotations.NotNull;
 
 import javax.crypto.BadPaddingException;
 import javax.crypto.IllegalBlockSizeException;
@@ -108,49 +110,70 @@ public class ProtocolLibListener extends PacketAdapter {
     public void onPacketReceiving(PacketEvent packetEvent) {
         if (packetEvent.isCancelled()
                 || plugin.getCore().getAuthPluginHook() == null
-                || !plugin.isServerFullyStarted()) {
+                || !plugin.isInitialized()) {
             return;
         }
 
-        plugin.getLog().info("New packet {} from {}", packetEvent.getPacketType(), packetEvent.getPlayer());
-
         Player sender = packetEvent.getPlayer();
-        PacketType packetType = packetEvent.getPacketType();
-        if (packetType == START) {
+        PacketType packetType = getOverriddenType(packetEvent.getPacketType());
 
-            if (plugin.getFloodgateService() != null) {
-                boolean success = processFloodgateTasks(packetEvent);
-                // don't continue execution if the player was kicked by Floodgate
-                if (!success) {
-                    return;
+        plugin.getLog().info("New packet {} from {}", packetType, sender);
+        try {
+            if (packetType == START) {
+                if (plugin.getFloodgateService() != null) {
+                    boolean success = processFloodgateTasks(packetEvent);
+                    // don't continue execution if the player was kicked by Floodgate
+                    if (!success) {
+                        return;
+                    }
                 }
+
+                PacketContainer packet = packetEvent.getPacket();
+
+                InetSocketAddress address = sender.getAddress();
+                String username = getUsername(packet);
+
+                Action action = antiBotService.onIncomingConnection(address, username);
+                switch (action) {
+                    case Ignore:
+                        // just ignore
+                        return;
+                    case Block:
+                        String message = plugin.getCore().getMessage("kick-antibot");
+                        sender.kickPlayer(message);
+                        break;
+                    case Continue:
+                    default:
+                        //player.getName() won't work at this state
+                        onLoginStart(packetEvent, sender, username);
+                        break;
+                }
+            } else if (packetType == ENCRYPTION_BEGIN) {
+                onEncryptionBegin(packetEvent, sender);
+            } else {
+                plugin.getLog().warn("Unknown packet type received {}", packetType);
             }
-
-            PacketContainer packet = packetEvent.getPacket();
-
-            InetSocketAddress address = sender.getAddress();
-            String username = getUsername(packet);
-
-            Action action = antiBotService.onIncomingConnection(address, username);
-            switch (action) {
-                case Ignore:
-                    // just ignore
-                    return;
-                case Block:
-                    String message = plugin.getCore().getMessage("kick-antibot");
-                    sender.kickPlayer(message);
-                    break;
-                case Continue:
-                default:
-                    //player.getName() won't work at this state
-                    onLoginStart(packetEvent, sender, username);
-                    break;
-            }
-        } else {
-            onEncryptionBegin(packetEvent, sender);
+        } catch (FieldAccessException fieldAccessEx) {
+            plugin.getLog().error("Failed to parse packet {}", packetEvent.getPacketType(), fieldAccessEx);
         }
     }
 
+    private @NotNull PacketType getOverriddenType(PacketType packetType) {
+        if (packetType.isDynamic()) {
+            String vanillaName = packetType.getPacketClass().getName();
+            plugin.getLog().info("Overriding packet type for unregistered packet type to fix ProtocolLib bug");
+            if (vanillaName.endsWith("ServerboundHelloPacket")) {
+                return START;
+            }
+
+            if (vanillaName.endsWith("ServerboundKeyPacket")) {
+                return ENCRYPTION_BEGIN;
+            }
+        }
+
+        return packetType;
+    }
+
     private void onEncryptionBegin(PacketEvent packetEvent, Player sender) {
         byte[] sharedSecret = packetEvent.getPacket().getByteArrays().read(0);
 
@@ -177,7 +200,7 @@ public class ProtocolLibListener extends PacketAdapter {
                                 ClientPublicKey clientPublicKey, byte[] expectedToken) {
         try {
             if (new MinecraftVersion(1, 19, 0).atOrAbove()
-                    && !(new MinecraftVersion(1, 19, 3).atOrAbove())) {
+                    && !new MinecraftVersion(1, 19, 3).atOrAbove()) {
                 Either<byte[], ?> either = packet.getSpecificModifier(Either.class).read(0);
                 if (clientPublicKey == null) {
                     Optional<byte[]> left = either.left();
@@ -222,7 +245,7 @@ public class ProtocolLibListener extends PacketAdapter {
         PacketContainer packet = packetEvent.getPacket();
         Optional<ClientPublicKey> clientKey;
         if (new MinecraftVersion(1, 19, 3).atOrAbove()) {
-            // public key sent separate
+            // public key is sent separate
             clientKey = Optional.empty();
         } else {
             val profileKey = packet.getOptionals(BukkitConverters.getWrappedPublicKeyDataConverter())
@@ -247,7 +270,6 @@ public class ProtocolLibListener extends PacketAdapter {
             }
         }
 
-
         plugin.getLog().trace("GameProfile {} with {} connecting", sessionKey, username);
 
         packetEvent.getAsyncMarker().incrementProcessingDelay();

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/ProtocolLibLoginSource.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,14 +23,14 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.ProtocolManager;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.wrappers.WrappedChatComponent;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.core.shared.LoginSource;
 import org.bukkit.entity.Player;
 
@@ -51,7 +51,6 @@ class ProtocolLibLoginSource implements LoginSource {
     private final ClientPublicKey clientKey;
     private final PublicKey publicKey;
 
-    private final String serverId = "";
     private byte[] verifyToken;
 
     ProtocolLibLoginSource(Player player, Random random, PublicKey serverPublicKey, ClientPublicKey clientKey) {
@@ -72,7 +71,7 @@ class ProtocolLibLoginSource implements LoginSource {
          */
         PacketContainer newPacket = new PacketContainer(ENCRYPTION_BEGIN);
 
-        newPacket.getStrings().write(0, serverId);
+        newPacket.getStrings().write(0, "");
         StructureModifier<PublicKey> keyModifier = newPacket.getSpecificModifier(PublicKey.class);
         int verifyField = 0;
         if (keyModifier.getFields().isEmpty()) {
@@ -84,6 +83,8 @@ class ProtocolLibLoginSource implements LoginSource {
         }
 
         newPacket.getByteArrays().write(verifyField, verifyToken);
+        // shouldAuthenticate, but why does this field even exist?
+        newPacket.getBooleans().writeSafely(0, true);
 
         //serverId is an empty string
         ProtocolLibrary.getProtocolManager().sendServerPacket(player, newPacket);
@@ -115,10 +116,6 @@ class ProtocolLibLoginSource implements LoginSource {
         return clientKey;
     }
 
-    public String getServerId() {
-        return serverId;
-    }
-
     public byte[] getVerifyToken() {
         return verifyToken.clone();
     }
@@ -128,7 +125,6 @@ class ProtocolLibLoginSource implements LoginSource {
         return this.getClass().getSimpleName() + '{'
             + "player=" + player
             + ", random=" + random
-            + ", serverId='" + serverId + '\''
             + ", verifyToken=" + Arrays.toString(verifyToken)
             + '}';
     }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/SkinApplyListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.wrappers.WrappedGameProfile;
 import com.comphenix.protocol.wrappers.WrappedSignedProperty;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/VerifyResponseTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.events.PacketContainer;
@@ -38,6 +38,7 @@ import com.comphenix.protocol.reflect.accessors.FieldAccessor;
 import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.utility.MinecraftVersion;
 import com.comphenix.protocol.wrappers.BukkitConverters;
+import com.comphenix.protocol.wrappers.Converters;
 import com.comphenix.protocol.wrappers.WrappedChatComponent;
 import com.comphenix.protocol.wrappers.WrappedGameProfile;
 import com.comphenix.protocol.wrappers.WrappedProfilePublicKey.WrappedProfileKeyData;
@@ -46,7 +47,8 @@ import com.github.games647.craftapi.model.skin.SkinProperty;
 import com.github.games647.craftapi.resolver.MojangResolver;
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.InetUtils;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import lombok.val;
 import org.bukkit.entity.Player;
 
@@ -70,13 +72,13 @@ import static com.comphenix.protocol.PacketType.Login.Server.DISCONNECT;
 public class VerifyResponseTask implements Runnable {
 
     private static final String ENCRYPTION_CLASS_NAME = "MinecraftEncryption";
-    private static final Class<?> ENCRYPTION_CLASS;
-
-    static {
-        ENCRYPTION_CLASS = MinecraftReflection.getMinecraftClass(
-            "util." + ENCRYPTION_CLASS_NAME, ENCRYPTION_CLASS_NAME
-        );
-    }
+    private static final String ADDRESS_VERIFY_WARNING = "This indicates the use of reverse-proxy like HAProxy, "
+            + "TCPShield, BungeeCord, Velocity, etc. "
+            + "By default (configurable in the config) this plugin requests Mojang to verify the connecting IP "
+            + "to this server with the one used to log into Minecraft to prevent MITM attacks. In "
+            + "order to work this security feature, the actual client IP needs to be forwarding "
+            + "(keyword IP forwarding). This process will also be useful for other server "
+            + "features like IP banning, so that it doesn't ban the proxy IP.";
 
     private final FastLoginBukkit plugin;
     private final PacketEvent packetEvent;
@@ -89,6 +91,8 @@ public class VerifyResponseTask implements Runnable {
     private final byte[] sharedSecret;
 
     private static Method encryptMethod;
+    private static Method encryptKeyMethod;
+
     private static Method cipherMethod;
 
     public VerifyResponseTask(FastLoginBukkit plugin, PacketEvent packetEvent,
@@ -149,10 +153,27 @@ public class VerifyResponseTask implements Runnable {
             } else {
                 //user tried to fake an authentication
                 disconnect(
-                    "invalid-session",
-                    "GameProfile {} ({}) tried to log in with an invalid session. ServerId: {}",
-                    session.getRequestUsername(), socketAddress, serverId
+                        "invalid-session",
+                        "Session server rejected incoming connection for GameProfile {} ({}). Possible reasons are "
+                                + "1) Client IP address contacting Mojang and server during server join were different "
+                                + "(Do you use a reverse proxy? -> Enable IP forwarding, "
+                                + "or disable the feature in the config). "
+                                + "2) Player is offline, but tried to bypass the authentication "
+                                + "3) Client uses an outdated username for connecting (Fix: Restart client)",
+                        requestedUsername, address
                 );
+
+                if (InetUtils.isLocalAddress(address)) {
+                    plugin.getLog().warn(
+                            "The incoming request for player {} uses a local IP address",
+                            requestedUsername
+                    );
+                } else {
+                    plugin.getLog().warn("If you think this is an error, please verify that the incoming "
+                            + "IP address {} is not associated with a server hosting company.", address);
+                }
+
+                plugin.getLog().warn(ADDRESS_VERIFY_WARNING);
             }
         } catch (IOException ioEx) {
             disconnect("error-kick", "Failed to connect to session server", ioEx);
@@ -174,10 +195,10 @@ public class VerifyResponseTask implements Runnable {
 
         session.setVerifiedUsername(realUsername);
         session.setUuid(verification.getId());
-        session.setVerified(true);
+        session.setVerifiedPremium(true);
 
         setPremiumUUID(session.getUuid());
-        receiveFakeStartPacket(realUsername, session.getClientPublicKey());
+        receiveFakeStartPacket(realUsername, session.getClientPublicKey(), session.getUuid());
     }
 
     private void setPremiumUUID(UUID premiumUUID) {
@@ -211,21 +232,24 @@ public class VerifyResponseTask implements Runnable {
     private boolean enableEncryption(SecretKey loginKey) throws IllegalArgumentException {
         plugin.getLog().info("Enabling onlinemode encryption for {}", player.getAddress());
         // Initialize method reflections
-        if (encryptMethod == null) {
+        if (encryptKeyMethod == null || encryptMethod == null) {
             Class<?> networkManagerClass = MinecraftReflection.getNetworkManagerClass();
-
             try {
                 // Try to get the old (pre MC 1.16.4) encryption method
-                encryptMethod = FuzzyReflection.fromClass(networkManagerClass)
-                    .getMethodByParameters("a", SecretKey.class);
+                encryptKeyMethod = FuzzyReflection.fromClass(networkManagerClass)
+                        .getMethodByParameters("a", SecretKey.class);
             } catch (IllegalArgumentException exception) {
                 // Get the new encryption method
                 encryptMethod = FuzzyReflection.fromClass(networkManagerClass)
-                    .getMethodByParameters("a", Cipher.class, Cipher.class);
+                        .getMethodByParameters("a", Cipher.class, Cipher.class);
+
+                Class<?> encryptionClass = MinecraftReflection.getMinecraftClass(
+                        "util." + ENCRYPTION_CLASS_NAME, ENCRYPTION_CLASS_NAME
+                );
 
                 // Get the needed Cipher helper method (used to generate ciphers from login key)
-                cipherMethod = FuzzyReflection.fromClass(ENCRYPTION_CLASS)
-                    .getMethodByParameters("a", int.class, Key.class);
+                cipherMethod = FuzzyReflection.fromClass(encryptionClass)
+                        .getMethodByParameters("a", int.class, Key.class);
             }
         }
 
@@ -233,9 +257,9 @@ public class VerifyResponseTask implements Runnable {
             Object networkManager = this.getNetworkManager();
 
             // If cipherMethod is null - use old encryption (pre MC 1.16.4), otherwise use the new cipher one
-            if (cipherMethod == null) {
+            if (encryptKeyMethod != null) {
                 // Encrypt/decrypt packet flow, this behaviour is expected by the client
-                encryptMethod.invoke(networkManager, loginKey);
+                encryptKeyMethod.invoke(networkManager, loginKey);
             } else {
                 // Create ciphers from login key
                 Object decryptionCipher = cipherMethod.invoke(null, Cipher.DECRYPT_MODE, loginKey);
@@ -268,15 +292,23 @@ public class VerifyResponseTask implements Runnable {
     }
 
     //fake a new login packet in order to let the server handle all the other stuff
-    private void receiveFakeStartPacket(String username, ClientPublicKey clientKey) {
+    private void receiveFakeStartPacket(String username, ClientPublicKey clientKey, UUID uuid) {
         PacketContainer startPacket;
-        if (new MinecraftVersion(1, 19, 0).atOrAbove()) {
+        if (new MinecraftVersion(1, 20, 2).atOrAbove()) {
+            startPacket = new PacketContainer(START);
+            startPacket.getStrings().write(0, username);
+            startPacket.getUUIDs().write(0, uuid);
+        } else if (new MinecraftVersion(1, 19, 3).atOrAbove()) {
+            startPacket = new PacketContainer(START);
+            startPacket.getStrings().write(0, username);
+            startPacket.getOptionals(Converters.passthrough(UUID.class)).write(0, Optional.of(uuid));
+        } else if (new MinecraftVersion(1, 19, 0).atOrAbove()) {
             startPacket = new PacketContainer(START);
             startPacket.getStrings().write(0, username);
 
             EquivalentConverter<WrappedProfileKeyData> converter = BukkitConverters.getWrappedPublicKeyDataConverter();
             val wrappedKey = Optional.ofNullable(clientKey).map(key ->
-                new WrappedProfileKeyData(clientKey.expiry(), clientKey.key(), clientKey.signature())
+                    new WrappedProfileKeyData(clientKey.expiry(), clientKey.key(), clientKey.signature())
             );
 
             startPacket.getOptionals(converter).write(0, wrappedKey);

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/protocollib/packet/ClientPublicKey.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib.packet;
+package com.github.games647.fastlogin.bukkit.auth.protocollib.packet;
 
 import lombok.Value;
 import lombok.experimental.Accessors;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/proxy/ProxyAuthentication.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,9 +23,10 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit;
+package com.github.games647.fastlogin.bukkit.auth.proxy;
 
-import com.github.games647.fastlogin.bukkit.listener.BungeeListener;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.AuthenticationBackend;
 import com.github.games647.fastlogin.core.message.ChannelMessage;
 import com.github.games647.fastlogin.core.message.LoginActionMessage;
 import com.github.games647.fastlogin.core.message.NamespaceKey;
@@ -33,105 +34,65 @@ import com.google.common.io.ByteArrayDataOutput;
 import com.google.common.io.ByteStreams;
 import org.bukkit.Bukkit;
 import org.bukkit.Server;
-import org.bukkit.entity.Player;
+import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.messaging.PluginMessageRecipient;
 
-import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Set;
-import java.util.UUID;
-import java.util.stream.Stream;
 
 import static com.github.games647.fastlogin.core.message.ChangePremiumMessage.CHANGE_CHANNEL;
 import static com.github.games647.fastlogin.core.message.SuccessMessage.SUCCESS_CHANNEL;
-import static java.util.stream.Collectors.toSet;
 
-public class BungeeManager {
-
-    private static final String LEGACY_FILE_NAME = "proxy-whitelist.txt";
-    private static final String FILE_NAME = "allowed-proxies.txt";
-
-    //null if proxies allowed list is empty so bungeecord support is disabled
-    private Set<UUID> proxyIds;
+public class ProxyAuthentication implements AuthenticationBackend {
 
     private final FastLoginBukkit plugin;
-    private boolean enabled;
+    private ProxyVerifier verifier;
 
-    private final Collection<UUID> firedJoinEvents = new HashSet<>();
-
-    public BungeeManager(FastLoginBukkit plugin) {
+    public ProxyAuthentication(FastLoginBukkit plugin) {
         this.plugin = plugin;
     }
 
-    public void cleanup() {
-        //remove old blocked status
-        Bukkit.getOnlinePlayers().forEach(player -> player.removeMetadata(plugin.getName(), plugin));
+
+    @Override
+    public boolean isAvailable() {
+        return detectProxy();
     }
 
-    public void sendPluginMessage(PluginMessageRecipient player, ChannelMessage message) {
-        if (player != null) {
-            ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput();
-            message.writeTo(dataOutput);
+    @Override
+    public void init(PluginManager pluginManager) {
+        verifier = new ProxyVerifier(plugin);
+        verifier.loadSecrets();
 
-            NamespaceKey channel = new NamespaceKey(plugin.getName(), message.getChannelName());
-            player.sendPluginMessage(plugin, channel.getCombinedName(), dataOutput.toByteArray());
+        registerPluginChannels();
+
+        pluginManager.registerEvents(new ProxyConnectionListener(plugin, verifier), plugin);
+
+        plugin.getLog().info("Found enabled proxy configuration");
+        plugin.getLog().info("Remember to follow the proxy guide to complete your setup");
+    }
+
+    private void registerPluginChannels() {
+        Server server = Bukkit.getServer();
+
+        // check for incoming messages from the bungeecord version of this plugin
+        String groupId = plugin.getName();
+        String forceChannel = NamespaceKey.getCombined(groupId, LoginActionMessage.FORCE_CHANNEL);
+        server.getMessenger().registerIncomingPluginChannel(plugin, forceChannel, new ProxyListener(plugin, verifier));
+
+        // outgoing
+        String successChannel = new NamespaceKey(groupId, SUCCESS_CHANNEL).getCombinedName();
+        String changeChannel = new NamespaceKey(groupId, CHANGE_CHANNEL).getCombinedName();
+        server.getMessenger().registerOutgoingPluginChannel(plugin, successChannel);
+        server.getMessenger().registerOutgoingPluginChannel(plugin, changeChannel);
+    }
+
+    @Override
+    public void stop() {
+        if (verifier != null) {
+            verifier.cleanup();
         }
     }
 
-    public boolean isEnabled() {
-        return enabled;
-    }
-
-    public void initialize() {
-        enabled = detectProxy();
-
-        if (enabled) {
-            proxyIds = loadBungeeCordIds();
-            if (proxyIds.isEmpty()) {
-                plugin.getLog().info("No valid IDs found. Minecraft proxy support cannot work in the current state");
-            }
-
-            registerPluginChannels();
-            plugin.getLog().info("Found enabled proxy configuration");
-            plugin.getLog().info("Remember to follow the proxy guide to complete your setup");
-        } else {
-            plugin.getLog().warn("Disabling Minecraft proxy configuration. Assuming direct connections from now on.");
-        }
-    }
-
-    private boolean isProxySupported(String className, String fieldName)
-        throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException {
-        return Class.forName(className).getDeclaredField(fieldName).getBoolean(null);
-    }
-
-    private boolean isVelocityEnabled()
-        throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException, ClassNotFoundException,
-        NoSuchMethodException, InvocationTargetException {
-        try {
-            Class<?> globalConfig = Class.forName("io.papermc.paper.configuration.GlobalConfiguration");
-            Object global = globalConfig.getDeclaredMethod("get").invoke(null);
-            Object proxiesConfiguration = global.getClass().getDeclaredField("proxies").get(global);
-
-            Field velocitySectionField = proxiesConfiguration.getClass().getDeclaredField("velocity");
-            Object velocityConfig = velocitySectionField.get(proxiesConfiguration);
-
-            return velocityConfig.getClass().getDeclaredField("enabled").getBoolean(velocityConfig);
-        } catch (ClassNotFoundException classNotFoundException) {
-            // try again using the older Paper configuration, because the old class file still exists in newer versions
-            if (isProxySupported("com.destroystokyo.paper.PaperConfig", "velocitySupport")) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
     private boolean detectProxy() {
         try {
             if (isProxySupported("org.spigotmc.SpigotConfig", "bungee")) {
@@ -155,82 +116,40 @@ public class BungeeManager {
         return false;
     }
 
-    private void registerPluginChannels() {
-        Server server = Bukkit.getServer();
-
-        // check for incoming messages from the bungeecord version of this plugin
-        String groupId = plugin.getName();
-        String forceChannel = NamespaceKey.getCombined(groupId, LoginActionMessage.FORCE_CHANNEL);
-        server.getMessenger().registerIncomingPluginChannel(plugin, forceChannel, new BungeeListener(plugin));
-
-        // outgoing
-        String successChannel = new NamespaceKey(groupId, SUCCESS_CHANNEL).getCombinedName();
-        String changeChannel = new NamespaceKey(groupId, CHANGE_CHANNEL).getCombinedName();
-        server.getMessenger().registerOutgoingPluginChannel(plugin, successChannel);
-        server.getMessenger().registerOutgoingPluginChannel(plugin, changeChannel);
+    private boolean isProxySupported(String className, String fieldName)
+            throws ClassNotFoundException, NoSuchFieldException, IllegalAccessException {
+        return Class.forName(className).getDeclaredField(fieldName).getBoolean(null);
     }
 
-    private Set<UUID> loadBungeeCordIds() {
-        Path proxiesFile = plugin.getPluginFolder().resolve(FILE_NAME);
-        Path legacyFile = plugin.getPluginFolder().resolve(LEGACY_FILE_NAME);
+    private boolean isVelocityEnabled()
+            throws NoSuchFieldException, IllegalArgumentException, IllegalAccessException, ClassNotFoundException,
+            NoSuchMethodException, InvocationTargetException {
         try {
-            if (Files.notExists(proxiesFile)) {
-                if (Files.exists(legacyFile)) {
-                    Files.move(legacyFile, proxiesFile);
-                }
+            Class<?> globalConfig = Class.forName("io.papermc.paper.configuration.GlobalConfiguration");
+            Object global = globalConfig.getDeclaredMethod("get").invoke(null);
+            Object proxiesConfiguration = global.getClass().getDeclaredField("proxies").get(global);
 
-                if (Files.notExists(legacyFile)) {
-                    Files.createFile(proxiesFile);
-                }
-            }
+            Field velocitySectionField = proxiesConfiguration.getClass().getDeclaredField("velocity");
+            Object velocityConfig = velocitySectionField.get(proxiesConfiguration);
 
-            Files.deleteIfExists(legacyFile);
-            try (Stream<String> lines = Files.lines(proxiesFile)) {
-                return lines.map(String::trim).map(UUID::fromString).collect(toSet());
+            return velocityConfig.getClass().getDeclaredField("enabled").getBoolean(velocityConfig);
+        } catch (ClassNotFoundException classNotFoundException) {
+            // try again using the older Paper configuration, because the old class file still exists in newer versions
+            if (isProxySupported("com.destroystokyo.paper.PaperConfig", "velocitySupport")) {
+                return true;
             }
-        } catch (IOException ex) {
-            plugin.getLog().error("Failed to read proxies", ex);
-        } catch (Exception ex) {
-            plugin.getLog().error("Failed to retrieve proxy Id. Disabling BungeeCord support", ex);
         }
 
-        return Collections.emptySet();
+        return false;
     }
 
-    public boolean isProxyAllowed(UUID proxyId) {
-        return proxyIds != null && proxyIds.contains(proxyId);
-    }
+    public void sendPluginMessage(PluginMessageRecipient player, ChannelMessage message) {
+        if (player != null) {
+            ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput();
+            message.writeTo(dataOutput);
 
-    /**
-     * Mark the event to be fired including the task delay.
-     *
-     * @param player joining player
-     */
-    public synchronized void markJoinEventFired(Player player) {
-        firedJoinEvents.add(player.getUniqueId());
-    }
-
-    /**
-     * Check if the event fired including with the task delay. This necessary to restore the order of processing the
-     * BungeeCord messages after the PlayerJoinEvent fires including the delay.
-     * <p>
-     * If the join event fired, the delay exceeded, but it ran earlier and couldn't find the recently started login
-     * session. If not fired, we can start a new force login task. This will still match the requirement that we wait
-     * a certain time after the player join event fired.
-     *
-     * @param player joining player
-     * @return event fired including delay
-     */
-    public synchronized boolean didJoinEventFired(Player player) {
-        return firedJoinEvents.contains(player.getUniqueId());
-    }
-
-    /**
-     * Player quit clean up
-     *
-     * @param player joining player
-     */
-    public synchronized void cleanup(Player player) {
-        firedJoinEvents.remove(player.getUniqueId());
+            NamespaceKey channel = new NamespaceKey(plugin.getName(), message.getChannelName());
+            player.sendPluginMessage(plugin, channel.getCombinedName(), dataOutput.toByteArray());
+        }
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/proxy/ProxyConnectionListener.java

@@ -0,0 +1,114 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth.proxy;
+
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.FloodgateAuthTask;
+import com.github.games647.fastlogin.bukkit.auth.ForceLoginTask;
+import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.metadata.Metadatable;
+import org.geysermc.floodgate.api.player.FloodgatePlayer;
+
+public class ProxyConnectionListener implements Listener {
+
+    private static final long DELAY_LOGIN = 20L / 2;
+
+    private final FastLoginBukkit plugin;
+    private final ProxyVerifier verifier;
+
+    public ProxyConnectionListener(FastLoginBukkit plugin, ProxyVerifier verifier) {
+        this.plugin = plugin;
+        this.verifier = verifier;
+    }
+
+    private void removeBlockedStatus(Metadatable player) {
+        player.removeMetadata(plugin.getName(), plugin);
+    }
+
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerLogin(PlayerLoginEvent loginEvent) {
+        removeBlockedStatus(loginEvent.getPlayer());
+    }
+
+    @EventHandler(ignoreCancelled = true)
+    public void onPlayerJoin(PlayerJoinEvent joinEvent) {
+        Player player = joinEvent.getPlayer();
+
+        Bukkit.getScheduler().runTaskLater(plugin, () -> {
+            delayForceLogin(player);
+            // delay the login process to let auth plugins initialize the player
+            // Magic number however as there is no direct event from those plugins
+        }, DELAY_LOGIN);
+    }
+
+    private void delayForceLogin(Player player) {
+        // session exists so the player is ready for force login
+        // cases: Paper (firing BungeeCord message before PlayerJoinEvent) or not running BungeeCord and already
+        // having the login session from the login process
+        BukkitLoginSession session = plugin.getSession(player.spigot().getRawAddress());
+
+        if (session == null) {
+            // Floodgate players usually don't have a session at this point
+            // exception: if force login by bungee message had been delayed
+            FloodgateService floodgateService = plugin.getFloodgateService();
+            if (floodgateService != null) {
+                FloodgatePlayer floodgatePlayer = floodgateService.getBedrockPlayer(player.getUniqueId());
+                if (floodgatePlayer != null) {
+                    Runnable floodgateAuthTask = new FloodgateAuthTask(plugin.getCore(), player, floodgatePlayer);
+                    Bukkit.getScheduler().runTaskAsynchronously(plugin, floodgateAuthTask);
+                    return;
+                }
+            }
+
+            String sessionId = plugin.getSessionId(player.spigot().getRawAddress());
+            plugin.getLog().info("No on-going login session for player: {} with ID {}. ", player, sessionId);
+            plugin.getLog().info("Setups using Minecraft proxies will start delayed "
+                    + "when the command from the proxy is received");
+        } else {
+            Runnable forceLoginTask = new ForceLoginTask(plugin.getCore(), player, session);
+            Bukkit.getScheduler().runTaskAsynchronously(plugin, forceLoginTask);
+        }
+
+        verifier.markJoinEventFired(player);
+    }
+
+    @EventHandler
+    public void onPlayerQuit(PlayerQuitEvent quitEvent) {
+        Player player = quitEvent.getPlayer();
+
+        removeBlockedStatus(player);
+        verifier.cleanup(player);
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/proxy/ProxyListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,11 +23,11 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener;
+package com.github.games647.fastlogin.bukkit.auth.proxy;
 
 import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.task.ForceLoginTask;
+import com.github.games647.fastlogin.bukkit.auth.ForceLoginTask;
 import com.github.games647.fastlogin.core.PremiumStatus;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
 import com.github.games647.fastlogin.core.message.LoginActionMessage;
@@ -47,12 +47,14 @@ import java.util.UUID;
  * This class also receives the plugin message from the bungeecord version of this plugin in order to get notified if
  * the connection is in online mode.
  */
-public class BungeeListener implements PluginMessageListener {
+public class ProxyListener implements PluginMessageListener {
 
     private final FastLoginBukkit plugin;
+    private final ProxyVerifier verifier;
 
-    public BungeeListener(FastLoginBukkit plugin) {
+    public ProxyListener(FastLoginBukkit plugin, ProxyVerifier verifier) {
         this.plugin = plugin;
+        this.verifier = verifier;
     }
 
     @Override
@@ -79,7 +81,7 @@ public class BungeeListener implements PluginMessageListener {
             plugin.getLog().warn("Received message {} from a blocked player {}", loginMessage, targetPlayer);
         } else {
             UUID sourceId = loginMessage.getProxyId();
-            if (plugin.getBungeeManager().isProxyAllowed(sourceId)) {
+            if (verifier.isProxyAllowed(sourceId)) {
                 readMessage(targetPlayer, loginMessage);
             } else {
                 plugin.getLog().warn("Received proxy id: {} that doesn't exist in the proxy file", sourceId);
@@ -123,11 +125,11 @@ public class BungeeListener implements PluginMessageListener {
     }
 
     private void startLoginTaskIfReady(Player player, BukkitLoginSession session) {
-        session.setVerified(true);
+        session.setVerifiedPremium(true);
         plugin.putSession(player.spigot().getRawAddress(), session);
 
         // only start a new login task if the join event fired earlier. This event then didn't
-        boolean result = plugin.getBungeeManager().didJoinEventFired(player);
+        boolean result = verifier.didJoinEventFired(player);
         plugin.getLog().info("Delaying force login until join event fired?: {}", result);
         if (result) {
             Runnable forceLoginTask = new ForceLoginTask(plugin.getCore(), player, session);

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/auth/proxy/ProxyVerifier.java

@@ -0,0 +1,135 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.bukkit.auth.proxy;
+
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Stream;
+
+import static java.util.stream.Collectors.toSet;
+
+public class ProxyVerifier {
+
+    private static final String LEGACY_FILE_NAME = "proxy-whitelist.txt";
+    private static final String FILE_NAME = "allowed-proxies.txt";
+
+    //null if proxies allowed list is empty so bungeecord support is disabled
+    private Set<UUID> proxyIds;
+
+    private final FastLoginBukkit plugin;
+
+    private final Collection<UUID> firedJoinEvents = new HashSet<>();
+
+    public ProxyVerifier(FastLoginBukkit plugin) {
+        this.plugin = plugin;
+    }
+
+    public void cleanup() {
+        //remove old blocked status
+        Bukkit.getOnlinePlayers().forEach(player -> player.removeMetadata(plugin.getName(), plugin));
+    }
+
+    public void loadSecrets() {
+        proxyIds = loadBungeeCordIds();
+        if (proxyIds.isEmpty()) {
+            plugin.getLog().info("No valid IDs found. Minecraft proxy support cannot work in the current state");
+        }
+    }
+
+    private Set<UUID> loadBungeeCordIds() {
+        Path proxiesFile = plugin.getPluginFolder().resolve(FILE_NAME);
+        Path legacyFile = plugin.getPluginFolder().resolve(LEGACY_FILE_NAME);
+        try {
+            if (Files.notExists(proxiesFile)) {
+                if (Files.exists(legacyFile)) {
+                    Files.move(legacyFile, proxiesFile);
+                }
+
+                if (Files.notExists(legacyFile)) {
+                    Files.createFile(proxiesFile);
+                }
+            }
+
+            Files.deleteIfExists(legacyFile);
+            try (Stream<String> lines = Files.lines(proxiesFile)) {
+                return lines.map(String::trim).map(UUID::fromString).collect(toSet());
+            }
+        } catch (IOException ex) {
+            plugin.getLog().error("Failed to read proxies", ex);
+        } catch (Exception ex) {
+            plugin.getLog().error("Failed to retrieve proxy Id. Disabling BungeeCord support", ex);
+        }
+
+        return Collections.emptySet();
+    }
+
+    public boolean isProxyAllowed(UUID proxyId) {
+        return proxyIds != null && proxyIds.contains(proxyId);
+    }
+
+    /**
+     * Mark the event to be fired including the task delay.
+     *
+     * @param player joining player
+     */
+    public synchronized void markJoinEventFired(Player player) {
+        firedJoinEvents.add(player.getUniqueId());
+    }
+
+    /**
+     * Check if the event fired including with the task delay. This necessary to restore the order of processing the
+     * BungeeCord messages after the PlayerJoinEvent fires including the delay.
+     * <p>
+     * If the join event fired, the delay exceeded, but it ran earlier and couldn't find the recently started login
+     * session. If not fired, we can start a new force login task. This will still match the requirement that we wait
+     * a certain time after the player join event fired.
+     *
+     * @param player joining player
+     * @return event fired including delay
+     */
+    public synchronized boolean didJoinEventFired(Player player) {
+        return firedJoinEvents.contains(player.getUniqueId());
+    }
+
+    /**
+     * Player quit clean up
+     *
+     * @param player joining player
+     */
+    public synchronized void cleanup(Player player) {
+        firedJoinEvents.remove(player.getUniqueId());
+    }
+}

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/command/CrackedCommand.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -63,10 +63,10 @@ public class CrackedCommand extends ToggleCommand {
 
         // todo: load async if
         StoredProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
-        if (profile.isPremium()) {
+        if (profile.isOnlinemodePreferred()) {
             plugin.getCore().sendLocaleMessage("remove-premium", sender);
 
-            profile.setPremium(false);
+            profile.setOnlinemodePreferred(false);
             profile.setId(null);
             plugin.getScheduler().runAsync(() -> {
                 plugin.getCore().getStorage().save(profile);
@@ -95,12 +95,12 @@ public class CrackedCommand extends ToggleCommand {
         }
 
         //existing player is already cracked
-        if (profile.isSaved() && !profile.isPremium()) {
+        if (profile.isExistingPlayer() && !profile.isOnlinemodePreferred()) {
             plugin.getCore().sendLocaleMessage("not-premium-other", sender);
         } else {
             plugin.getCore().sendLocaleMessage("remove-premium", sender);
 
-            profile.setPremium(false);
+            profile.setOnlinemodePreferred(false);
             plugin.getScheduler().runAsync(() -> {
                 plugin.getCore().getStorage().save(profile);
                 plugin.getServer().getPluginManager().callEvent(

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/command/PremiumCommand.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -64,25 +64,25 @@ public class PremiumCommand extends ToggleCommand {
             return;
         }
 
+        UUID id = ((Player) sender).getUniqueId();
+        if (plugin.getConfig().getBoolean("premium-warning") && !plugin.getPendingConfirms().contains(id)) {
+            sender.sendMessage(plugin.getCore().getMessage("premium-warning"));
+            plugin.getPendingConfirms().add(id);
+            return;
+        }
+
         if (forwardPremiumCommand(sender, sender.getName())) {
             return;
         }
 
-        UUID id = ((Player) sender).getUniqueId();
-        if (plugin.getConfig().getBoolean("premium-warning") && !plugin.getCore().getPendingConfirms().contains(id)) {
-            sender.sendMessage(plugin.getCore().getMessage("premium-warning"));
-            plugin.getCore().getPendingConfirms().add(id);
-            return;
-        }
-
-        plugin.getCore().getPendingConfirms().remove(id);
+        plugin.getPendingConfirms().remove(id);
         //todo: load async
         StoredProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
-        if (profile.isPremium()) {
+        if (profile.isOnlinemodePreferred()) {
             plugin.getCore().sendLocaleMessage("already-exists", sender);
         } else {
             //todo: resolve uuid
-            profile.setPremium(true);
+            profile.setOnlinemodePreferred(true);
             plugin.getScheduler().runAsync(() -> {
                 plugin.getCore().getStorage().save(profile);
                 plugin.getServer().getPluginManager().callEvent(
@@ -109,11 +109,11 @@ public class PremiumCommand extends ToggleCommand {
             return;
         }
 
-        if (profile.isPremium()) {
+        if (profile.isOnlinemodePreferred()) {
             plugin.getCore().sendLocaleMessage("already-exists-other", sender);
         } else {
             //todo: resolve uuid
-            profile.setPremium(true);
+            profile.setOnlinemodePreferred(true);
             plugin.getScheduler().runAsync(() -> {
                 plugin.getCore().getStorage().save(profile);
                 plugin.getServer().getPluginManager().callEvent(

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/command/ToggleCommand.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -26,6 +26,7 @@
 package com.github.games647.fastlogin.bukkit.command;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.auth.proxy.ProxyAuthentication;
 import com.github.games647.fastlogin.core.message.ChangePremiumMessage;
 import com.github.games647.fastlogin.core.message.ChannelMessage;
 import org.bukkit.Bukkit;
@@ -55,7 +56,7 @@ public abstract class ToggleCommand implements CommandExecutor {
     }
 
     protected boolean forwardBungeeCommand(CommandSender sender, String target, boolean activate) {
-        if (plugin.getBungeeManager().isEnabled()) {
+        if (plugin.getBackend() instanceof ProxyAuthentication) {
             sendBungeeActivateMessage(sender, target, activate);
             plugin.getCore().sendLocaleMessage("wait-on-proxy", sender);
             return true;

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/event/BukkitFastLoginAutoLoginEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/event/BukkitFastLoginPreLoginEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/event/BukkitFastLoginPremiumToggleEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/AuthMeHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -45,9 +45,9 @@ import java.lang.reflect.Field;
  * <p>
  * Project page:
  * <p>
- * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/authme-reloaded/">...</a>
+ * <a href="https://dev.bukkit.org/bukkit-plugins/authme-reloaded/">Bukkit</a>
  * <p>
- * Spigot: <a href="https://www.spigotmc.org/resources/authme-reloaded.6269/">...</a>
+ * <a href="https://www.spigotmc.org/resources/authme-reloaded.6269/">Spigot</a>
  */
 public class AuthMeHook implements AuthPlugin<Player>, Listener {
 
@@ -76,7 +76,7 @@ public class AuthMeHook implements AuthPlugin<Player>, Listener {
         Player player = restoreSessionEvent.getPlayer();
 
         BukkitLoginSession session = plugin.getSession(player.spigot().getRawAddress());
-        if (session != null && session.isVerified()) {
+        if (session != null && session.isVerifiedPremium()) {
             restoreSessionEvent.setCancelled(true);
         }
     }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/CrazyLoginHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -46,7 +46,7 @@ import java.util.concurrent.Future;
  * <p>
  * Project page:
  * <p>
- * Bukkit: <a href="https://dev.bukkit.org/server-mods/crazylogin/">...</a>
+ * <a href="https://dev.bukkit.org/server-mods/crazylogin/">Bukkit</a>
  */
 public class CrazyLoginHook implements AuthPlugin<Player> {
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/DelayedAuthHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,15 +23,9 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.task;
+package com.github.games647.fastlogin.bukkit.hook;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.hook.AuthMeHook;
-import com.github.games647.fastlogin.bukkit.hook.CrazyLoginHook;
-import com.github.games647.fastlogin.bukkit.hook.LogItHook;
-import com.github.games647.fastlogin.bukkit.hook.LoginSecurityHook;
-import com.github.games647.fastlogin.bukkit.hook.UltraAuthHook;
-import com.github.games647.fastlogin.bukkit.hook.XAuthHook;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
@@ -51,19 +45,7 @@ public class DelayedAuthHook implements Runnable {
 
     @Override
     public void run() {
-        boolean hookFound = isHookFound();
-        if (plugin.getBungeeManager().isEnabled()) {
-            plugin.getLog().info("BungeeCord setting detected. No auth plugin is required");
-        } else if (!hookFound) {
-            plugin.getLog().warn("No auth plugin were found by this plugin "
-                    + "(other plugins could hook into this after the initialization of this plugin)"
-                    + "and BungeeCord is deactivated. "
-                    + "Either one or both of the checks have to pass in order to use this plugin");
-        }
-
-        if (hookFound) {
-            plugin.markInitialized();
-        }
+        plugin.setInitialized(isHookFound());
     }
 
     private boolean isHookFound() {

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/LogItHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/LoginSecurityHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -39,9 +39,9 @@ import org.bukkit.entity.Player;
  * <p>
  * Project page:
  * <p>
- * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/loginsecurity/">...</a>
+ * <a href="https://dev.bukkit.org/bukkit-plugins/loginsecurity/">Bukkit</a>
  * <p>
- * Spigot: <a href="https://www.spigotmc.org/resources/loginsecurity.19362/">...</a>
+ * <a href="https://www.spigotmc.org/resources/loginsecurity.19362/">Spigot</a>
  */
 public class LoginSecurityHook implements AuthPlugin<Player> {
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/UltraAuthHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -38,9 +38,9 @@ import java.util.concurrent.Future;
 /**
  * Project page:
  * <p>
- * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/ultraauth-aa/">...</a>
+ * <a href="https://dev.bukkit.org/bukkit-plugins/ultraauth-aa/">Bukkit</a>
  * <p>
- * Spigot: <a href="https://www.spigotmc.org/resources/ultraauth.17044/">...</a>
+ * <a href="https://www.spigotmc.org/resources/ultraauth.17044/">Spigot</a>
  */
 public class UltraAuthHook implements AuthPlugin<Player> {
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/hook/XAuthHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -40,7 +40,7 @@ import java.util.concurrent.Future;
  * <p>
  * Project page:
  * <p>
- * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/xauth/">...</a>
+ * <a href="https://dev.bukkit.org/bukkit-plugins/xauth/">Bukkit</a>
  */
 public class XAuthHook implements AuthPlugin<Player> {
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocolsupport/ProtocolSupportListener.java

@@ -1,139 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2023 games647 and contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-package com.github.games647.fastlogin.bukkit.listener.protocolsupport;
-
-import com.github.games647.craftapi.UUIDAdapter;
-import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.bukkit.event.BukkitFastLoginPreLoginEvent;
-import com.github.games647.fastlogin.core.antibot.AntiBotService;
-import com.github.games647.fastlogin.core.antibot.AntiBotService.Action;
-import com.github.games647.fastlogin.core.shared.JoinManagement;
-import com.github.games647.fastlogin.core.shared.event.FastLoginPreLoginEvent;
-import com.github.games647.fastlogin.core.storage.StoredProfile;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
-import protocolsupport.api.events.ConnectionCloseEvent;
-import protocolsupport.api.events.PlayerLoginStartEvent;
-import protocolsupport.api.events.PlayerProfileCompleteEvent;
-
-import java.net.InetSocketAddress;
-import java.util.Optional;
-
-public class ProtocolSupportListener extends JoinManagement<Player, CommandSender, ProtocolLoginSource>
-        implements Listener {
-
-    private final FastLoginBukkit plugin;
-    private final AntiBotService antiBotService;
-
-    public ProtocolSupportListener(FastLoginBukkit plugin, AntiBotService antiBotService) {
-        super(plugin.getCore(), plugin.getCore().getAuthPluginHook(), plugin.getBedrockService());
-
-        this.plugin = plugin;
-        this.antiBotService = antiBotService;
-    }
-
-    @EventHandler
-    public void onLoginStart(PlayerLoginStartEvent loginStartEvent) {
-        if (loginStartEvent.isLoginDenied() || plugin.getCore().getAuthPluginHook() == null) {
-            return;
-        }
-
-        String username = loginStartEvent.getConnection().getProfile().getName();
-        InetSocketAddress address = loginStartEvent.getConnection().getRawAddress();
-        plugin.getLog().info("Incoming login request for {} from {}", username, address);
-
-        Action action = antiBotService.onIncomingConnection(address, username);
-        switch (action) {
-            case Ignore:
-                // just ignore
-                return;
-            case Block:
-                String message = plugin.getCore().getMessage("kick-antibot");
-                loginStartEvent.denyLogin(message);
-                break;
-            case Continue:
-            default:
-                //remove old data every time on a new login in order to keep the session only for one person
-                plugin.removeSession(address);
-
-                ProtocolLoginSource source = new ProtocolLoginSource(loginStartEvent);
-                super.onLogin(username, source);
-                break;
-        }
-    }
-
-    @EventHandler
-    public void onConnectionClosed(ConnectionCloseEvent closeEvent) {
-        InetSocketAddress address = closeEvent.getConnection().getRawAddress();
-        plugin.removeSession(address);
-    }
-
-    @EventHandler
-    public void onPropertiesResolve(PlayerProfileCompleteEvent profileCompleteEvent) {
-        InetSocketAddress address = profileCompleteEvent.getConnection().getRawAddress();
-
-        BukkitLoginSession session = plugin.getSession(address);
-
-        if (session != null && profileCompleteEvent.getConnection().getProfile().isOnlineMode()) {
-            session.setVerified(true);
-
-            if (!plugin.getConfig().getBoolean("premiumUuid")) {
-                String username = Optional.ofNullable(profileCompleteEvent.getForcedName())
-                        .orElse(profileCompleteEvent.getConnection().getProfile().getName());
-                profileCompleteEvent.setForcedUUID(UUIDAdapter.generateOfflineId(username));
-            }
-        }
-    }
-
-    @Override
-    public FastLoginPreLoginEvent callFastLoginPreLoginEvent(String username, ProtocolLoginSource source,
-                                                             StoredProfile profile) {
-        BukkitFastLoginPreLoginEvent event = new BukkitFastLoginPreLoginEvent(username, source, profile);
-        plugin.getServer().getPluginManager().callEvent(event);
-        return event;
-    }
-
-    @Override
-    public void requestPremiumLogin(ProtocolLoginSource source, StoredProfile profile, String username,
-                                    boolean registered) {
-        source.enableOnlinemode();
-
-        String ip = source.getAddress().getAddress().getHostAddress();
-        plugin.getCore().getPendingLogin().put(ip + username, new Object());
-
-        BukkitLoginSession playerSession = new BukkitLoginSession(username, registered, profile);
-        plugin.putSession(source.getAddress(), playerSession);
-    }
-
-    @Override
-    public void startCrackedSession(ProtocolLoginSource source, StoredProfile profile, String username) {
-        BukkitLoginSession loginSession = new BukkitLoginSession(username, profile);
-        plugin.putSession(source.getAddress(), loginSession);
-    }
-}

bukkit/src/main/resources/plugin.yml

@@ -25,12 +25,11 @@ softdepend:
     - floodgate
     # Auth plugins
     - AuthMe
+    - CrazyLogin
     - LoginSecurity
-    - SodionAuth
-    - xAuth
     - LogIt
     - UltraAuth
-    - CrazyLogin
+    - xAuth
 
 commands:
     ${project.parent.name}:

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/FastLoginBukkitTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -41,8 +41,10 @@ class FastLoginBukkitTest {
         val msg = CommonUtil.translateColorCodes(message);
         assertEquals(msg, "§x00002a00002b§lText");
 
+        @SuppressWarnings("deprecation")
         val components = TextComponent.fromLegacyText(msg);
         val expected = "{\"bold\":true,\"color\":\"#00a00b\",\"text\":\"Text\"}";
+        //noinspection deprecation
         assertEquals(ComponentSerializer.toString(components), expected);
     }
 }

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/ReflectionTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/auth/protocollib/Base64Adapter.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.google.gson.TypeAdapter;
 import com.google.gson.stream.JsonReader;

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/auth/protocollib/EncryptionUtilTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,10 +23,10 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
-import com.github.games647.fastlogin.bukkit.listener.protocollib.SignatureTestData.SignatureData;
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.SignatureTestData.SignatureData;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.google.common.hash.Hashing;
 import lombok.val;
 import org.junit.jupiter.api.Test;
@@ -60,7 +60,7 @@ class EncryptionUtilTest {
 
     @Test
     void testVerifyToken() {
-        val random = ThreadLocalRandom.current();
+        @SuppressWarnings("SharedThreadLocalRandom") val random = ThreadLocalRandom.current();
         byte[] token = EncryptionUtil.generateVerifyToken(random);
 
         assertAll(
@@ -88,7 +88,7 @@ class EncryptionUtilTest {
 
     @Test
     void testExpiredClientKey() throws Exception {
-        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        val clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
 
         // Client expires at the exact second mentioned, so use it for verification
         val expiredTimestamp = clientKey.expiry();
@@ -105,7 +105,7 @@ class EncryptionUtilTest {
             "client_keys/invalid_wrong_signature.json"
     })
     void testInvalidClientKey(String clientKeySource) throws Exception {
-        val clientKey = ResourceLoader.loadClientKey(clientKeySource);
+        val clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey(clientKeySource);
         Instant expireTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
 
         assertFalse(EncryptionUtil.verifyClientKey(clientKey, expireTimestamp, null));
@@ -113,7 +113,7 @@ class EncryptionUtilTest {
 
     @Test
     void testValidClientKey() throws Exception {
-        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        val clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
         val verificationTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
 
         assertTrue(EncryptionUtil.verifyClientKey(clientKey, verificationTimestamp, null));
@@ -121,7 +121,7 @@ class EncryptionUtilTest {
 
     @Test
     void testValid191ClientKey() throws Exception {
-        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key_19_1.json");
+        val clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key_19_1.json");
         val verificationTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
 
         val ownerPremiumId = UUID.fromString("0aaa2c13-922a-411b-b655-9b8c08404695");
@@ -130,7 +130,7 @@ class EncryptionUtilTest {
 
     @Test
     void testIncorrect191ClientOwner() throws Exception {
-        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key_19_1.json");
+        val clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key_19_1.json");
         val verificationTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
 
         val ownerPremiumId = UUID.fromString("61699b2e-d327-4a01-9f1e-0ea8c3f06bc6");
@@ -170,7 +170,7 @@ class EncryptionUtilTest {
     void testServerIdHash() throws Exception {
         val serverId = "";
         val sharedSecret = generateSharedKey();
-        val serverPK = ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
+        val serverPK = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
 
         String sessionHash = getServerHash(serverId, sharedSecret, serverPK);
         assertEquals(EncryptionUtil.getServerIdHashString(serverId, sharedSecret, serverPK), sessionHash);
@@ -200,7 +200,7 @@ class EncryptionUtilTest {
     void testServerIdHashWrongSecret() throws Exception {
         val serverId = "";
         val sharedSecret = generateSharedKey();
-        val serverPK = ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
+        val serverPK = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
 
         String sessionHash = getServerHash(serverId, sharedSecret, serverPK);
         assertNotEquals(EncryptionUtil.getServerIdHashString("", generateSharedKey(), serverPK), sessionHash);
@@ -219,7 +219,7 @@ class EncryptionUtilTest {
 
     @Test
     void testValidSignedNonce() throws Exception {
-        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        ClientPublicKey clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
         SignatureTestData testData = SignatureTestData.fromResource("signature/valid_signature.json");
         assertTrue(verifySignedNonce(testData, clientKey));
     }
@@ -231,7 +231,7 @@ class EncryptionUtilTest {
             "signature/incorrect_signature.json",
     })
     void testIncorrectNonce(String signatureSource) throws Exception {
-        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        ClientPublicKey clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
         SignatureTestData testData = SignatureTestData.fromResource(signatureSource);
         assertFalse(verifySignedNonce(testData, clientKey));
     }
@@ -239,7 +239,7 @@ class EncryptionUtilTest {
     @Test
     void testWrongPublicKeySigned() throws Exception {
         // load a different public key
-        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/invalid_wrong_key.json");
+        ClientPublicKey clientKey = com.github.games647.fastlogin.bukkit.auth.protocollib.ResourceLoader.loadClientKey("client_keys/invalid_wrong_key.json");
         SignatureTestData testData = SignatureTestData.fromResource("signature/valid_signature.json");
         assertFalse(verifySignedNonce(testData, clientKey));
     }

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/auth/protocollib/ResourceLoader.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,9 +23,9 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
-import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.github.games647.fastlogin.bukkit.auth.protocollib.packet.ClientPublicKey;
 import com.google.common.io.Resources;
 import com.google.gson.Gson;
 import com.google.gson.JsonObject;
@@ -50,6 +50,10 @@ import java.util.Base64;
 
 public class ResourceLoader {
 
+    private ResourceLoader() {
+        // Utility
+    }
+
     public static RSAPrivateKey parsePrivateKey(String keySpec)
         throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
         try (

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/auth/protocollib/SignatureTestData.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.google.common.io.Resources;
 import com.google.gson.Gson;

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/auth/protocollib/VerifyResponseTaskTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocollib;
+package com.github.games647.fastlogin.bukkit.auth.protocollib;
 
 import com.comphenix.protocol.injector.packet.PacketRegistry;
 import com.comphenix.protocol.reflect.accessors.Accessors;

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/hook/CrazyLoginHookTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bukkit/src/test/java/com/github/games647/fastlogin/bukkit/hook/DelayedAuthHookTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,7 +23,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.task;
+package com.github.games647.fastlogin.bukkit.hook;
 
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
 import lombok.val;

bungee/pom.xml

@@ -4,7 +4,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2023 games647 and contributors
+    Copyright (c) 2015-2024 games647 and contributors
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
@@ -40,6 +40,10 @@
     <artifactId>fastlogin.bungee</artifactId>
     <packaging>jar</packaging>
 
+    <properties>
+        <maven.compiler.release>17</maven.compiler.release>
+    </properties>
+
     <!--Represents the main plugin-->
     <name>FastLoginBungee</name>
 
@@ -47,20 +51,12 @@
         <plugins>
             <plugin>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>3.5.3</version>
                 <configuration>
                     <minimizeJar>true</minimizeJar>
 
                     <createDependencyReducedPom>false</createDependencyReducedPom>
                     <shadedArtifactAttached>false</shadedArtifactAttached>
-                    <artifactSet>
-                        <excludes>
-                            <!--Those classes are already present in BungeeCord version-->
-                            <exclude>net.md-5:bungeecord-config</exclude>
-                            <exclude>com.google.code.gson:gson</exclude>
-                            <exclude>com.google.guava:guava</exclude>
-                        </excludes>
-                    </artifactSet>
                     <relocations>
                         <relocation>
                             <pattern>com.zaxxer.hikari</pattern>
@@ -82,6 +78,7 @@
                             <artifact>*:*</artifact>
                             <excludes>
                                 <exclude>META-INF/MANIFEST.MF</exclude>
+                                <exclude>**/module-info</exclude>
                                 <exclude>**/module-info.class</exclude>
                             </excludes>
                         </filter>
@@ -120,13 +117,33 @@
             <groupId>${project.groupId}</groupId>
             <artifactId>fastlogin.core</artifactId>
             <version>${project.version}</version>
+            <!--Those classes are already present in BungeeCord version-->
+            <exclusions>
+                <exclusion>
+                    <groupId>net.md-5</groupId>
+                    <artifactId>bungeecord-config</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>com.google.code.gson</groupId>
+                    <artifactId>gson</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>com.google.guava</groupId>
+                    <artifactId>guava</artifactId>
+                </exclusion>
+                <!-- Exclude snakeyaml, because it is included in BungeeCord with the correct version -->
+                <exclusion>
+                    <groupId>org.yaml</groupId>
+                    <artifactId>snakeyaml</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <!--BungeeCord with also the part outside the API-->
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-proxy</artifactId>
-            <version>1.19-R0.1-SNAPSHOT</version>
+            <version>1.20-R0.2-SNAPSHOT</version>
             <scope>provided</scope>
             <!-- Use our own newer api version -->
             <exclusions>
@@ -135,13 +152,14 @@
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
                 <exclusion>
-                    <groupId>mysql</groupId>
+                    <groupId>com.mysql</groupId>
                     <artifactId>*</artifactId>
                 </exclusion>
                 <exclusion>
                     <groupId>net.md-5</groupId>
                     <artifactId>bungeecord-native</artifactId>
                 </exclusion>
+
                 <exclusion>
                     <groupId>net.md-5</groupId>
                     <artifactId>bungeecord-query</artifactId>
@@ -150,6 +168,11 @@
                     <groupId>net.md-5</groupId>
                     <artifactId>bungeecord-slf4j</artifactId>
                 </exclusion>
+
+                <exclusion>
+                    <groupId>net.sf.jopt-simple</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
                 <exclusion>
                     <groupId>org.apache.maven</groupId>
                     <artifactId>*</artifactId>
@@ -158,6 +181,10 @@
                     <groupId>org.apache.maven.resolver</groupId>
                     <artifactId>*</artifactId>
                 </exclusion>
+                <exclusion>
+                    <groupId>io.netty</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
             </exclusions>
         </dependency>
 

bungee/src/main/java/com/github/games647/fastlogin/bungee/BungeeLoginSession.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/BungeeLoginSource.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -54,9 +54,15 @@ public class BungeeLoginSource implements LoginSource {
         preLoginEvent.setCancelled(true);
 
         if (message == null) {
-            preLoginEvent.setCancelReason(new ComponentBuilder("Kicked").color(ChatColor.WHITE).create());
+            preLoginEvent.setReason(
+                    TextComponent.fromArray(
+                            new ComponentBuilder("Kicked").color(ChatColor.WHITE).create()
+                    ));
         } else {
-            preLoginEvent.setCancelReason(TextComponent.fromLegacyText(message));
+            preLoginEvent.setReason(
+                    TextComponent.fromArray(
+                            TextComponent.fromLegacyText(message)
+                    ));
         }
     }
 
@@ -72,7 +78,7 @@ public class BungeeLoginSource implements LoginSource {
     @Override
     public String toString() {
         return this.getClass().getSimpleName() + '{'
-            + "connection=" + connection
-            + '}';
+                + "connection=" + connection
+                + '}';
     }
 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/FastLoginBungee.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -28,7 +28,6 @@ package com.github.games647.fastlogin.bungee;
 import com.github.games647.fastlogin.bungee.hook.BungeeAuthHook;
 import com.github.games647.fastlogin.bungee.listener.ConnectListener;
 import com.github.games647.fastlogin.bungee.listener.PluginMessageListener;
-import com.github.games647.fastlogin.core.AsyncScheduler;
 import com.github.games647.fastlogin.core.CommonUtil;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
 import com.github.games647.fastlogin.core.hooks.bedrock.BedrockService;
@@ -38,6 +37,7 @@ import com.github.games647.fastlogin.core.message.ChangePremiumMessage;
 import com.github.games647.fastlogin.core.message.ChannelMessage;
 import com.github.games647.fastlogin.core.message.NamespaceKey;
 import com.github.games647.fastlogin.core.message.SuccessMessage;
+import com.github.games647.fastlogin.core.scheduler.AsyncScheduler;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
 import com.github.games647.fastlogin.core.shared.PlatformPlugin;
 import com.google.common.collect.MapMaker;
@@ -98,7 +98,7 @@ public class FastLoginBungee extends Plugin implements PlatformPlugin<CommandSen
         //events
         PluginManager pluginManager = getProxy().getPluginManager();
 
-        Listener connectListener = new ConnectListener(this, core.getAntiBot());
+        Listener connectListener = new ConnectListener(this, core.getAntiBotService());
         pluginManager.registerListener(this, connectListener);
         pluginManager.registerListener(this, new PluginMessageListener(this));
 

bungee/src/main/java/com/github/games647/fastlogin/bungee/event/BungeeFastLoginAutoLoginEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/event/BungeeFastLoginPreLoginEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/event/BungeeFastLoginPremiumToggleEvent.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/hook/BungeeAuthHook.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/listener/ConnectListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -71,25 +71,43 @@ public class ConnectListener implements Listener {
     private static final String UUID_FIELD_NAME = "uniqueId";
     protected static final MethodHandle UNIQUE_ID_SETTER;
 
+    private static final String REWRITE_ID_NAME = "rewriteId";
+    protected static final MethodHandle REWRITE_ID_SETTER;
+
     static {
-        MethodHandle setHandle = null;
+        MethodHandle uniqueIdHandle = null;
+        MethodHandle rewriterHandle = null;
         try {
             Lookup lookup = MethodHandles.lookup();
 
+            // test for implementation class availability
             Class.forName("net.md_5.bungee.connection.InitialHandler");
-
-            Field uuidField = InitialHandler.class.getDeclaredField(UUID_FIELD_NAME);
-            uuidField.setAccessible(true);
-            setHandle = lookup.unreflectSetter(uuidField);
+            uniqueIdHandle = getHandlerSetter(lookup, UUID_FIELD_NAME);
+            try {
+                rewriterHandle = getHandlerSetter(lookup, REWRITE_ID_NAME);
+            } catch (NoSuchFieldException noSuchFieldEx) {
+                Logger logger = LoggerFactory.getLogger(ConnectListener.class);
+                logger.error(
+                        "Rewrite field not found. Setting only legacy BungeeCord field"
+                );
+            }
         } catch (ReflectiveOperationException reflectiveOperationException) {
             Logger logger = LoggerFactory.getLogger(ConnectListener.class);
             logger.error(
-                    "Cannot find Bungee initial handler; Disabling premium UUID and skin won't work.",
+                    "Cannot find Bungee UUID field implementation; Disabling premium UUID and skin won't work.",
                     reflectiveOperationException
             );
         }
 
-        UNIQUE_ID_SETTER = setHandle;
+        UNIQUE_ID_SETTER = uniqueIdHandle;
+        REWRITE_ID_SETTER = rewriterHandle;
+    }
+
+    private static MethodHandle getHandlerSetter(Lookup lookup, String fieldName)
+            throws NoSuchFieldException, IllegalAccessException {
+        Field uuidField = InitialHandler.class.getDeclaredField(fieldName);
+        uuidField.setAccessible(true);
+        return lookup.unreflectSetter(uuidField);
     }
 
     private final FastLoginBungee plugin;
@@ -179,6 +197,12 @@ public class ConnectListener implements Listener {
             // So we have to do it with reflection
             UNIQUE_ID_SETTER.invokeExact(connection, offlineUUID);
 
+            // if available set rewrite id to forward the UUID for newer BungeeCord versions since
+            // https://github.com/SpigotMC/BungeeCord/commit/1be25b6c74ec2be4b15adf8ca53a0497f01e2afe
+            if (REWRITE_ID_SETTER != null) {
+                REWRITE_ID_SETTER.invokeExact(connection, offlineUUID);
+            }
+
             String format = "Overridden UUID from {} to {} (based of {}) on {}";
             plugin.getLog().info(format, oldPremiumId, offlineUUID, username, connection);
         } catch (Exception ex) {
@@ -209,9 +233,6 @@ public class ConnectListener implements Listener {
             return;
         }
 
-        // delay sending force command, because Paper will process the login event asynchronously
-        // In this case it means that the force command (plugin message) is already received and processed while
-        // player is still in the login phase and reported to be offline.
         Runnable loginTask = new ForceLoginTask(plugin.getCore(), player, server, session);
         plugin.getScheduler().runAsync(loginTask);
     }
@@ -220,6 +241,5 @@ public class ConnectListener implements Listener {
     public void onDisconnect(PlayerDisconnectEvent disconnectEvent) {
         ProxiedPlayer player = disconnectEvent.getPlayer();
         plugin.getSession().remove(player.getPendingConnection());
-        plugin.getCore().getPendingConfirms().remove(player.getUniqueId());
     }
 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/listener/PluginMessageListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -37,7 +37,6 @@ import com.github.games647.fastlogin.core.storage.StoredProfile;
 import com.google.common.io.ByteArrayDataInput;
 import com.google.common.io.ByteStreams;
 import net.md_5.bungee.api.CommandSender;
-import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.connection.Server;
 import net.md_5.bungee.api.event.PluginMessageEvent;
@@ -96,15 +95,6 @@ public class PluginMessageListener implements Listener {
             String playerName = changeMessage.getPlayerName();
             boolean isSourceInvoker = changeMessage.isSourceInvoker();
             if (changeMessage.shouldEnable()) {
-                if (playerName.equals(forPlayer.getName()) && plugin.getCore().getConfig().get("premium-warning", true)
-                        && !core.getPendingConfirms().contains(forPlayer.getUniqueId())) {
-                    String message = core.getMessage("premium-warning");
-                    forPlayer.sendMessage(TextComponent.fromLegacyText(message));
-                    core.getPendingConfirms().add(forPlayer.getUniqueId());
-                    return;
-                }
-
-                core.getPendingConfirms().remove(forPlayer.getUniqueId());
                 Runnable task = new AsyncToggleMessage(core, forPlayer, playerName, true, isSourceInvoker);
                 plugin.getScheduler().runAsync(task);
             } else {
@@ -131,7 +121,7 @@ public class PluginMessageListener implements Listener {
             loginSession.setRegistered(true);
 
             if (!loginSession.isAlreadySaved()) {
-                playerProfile.setPremium(true);
+                playerProfile.setOnlinemodePreferred(true);
                 plugin.getCore().getStorage().save(playerProfile);
                 loginSession.setAlreadySaved(true);
             }

bungee/src/main/java/com/github/games647/fastlogin/bungee/task/AsyncPremiumCheck.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -81,7 +81,7 @@ public class AsyncPremiumCheck extends JoinManagement<ProxiedPlayer, CommandSend
         plugin.getSession().put(source.getConnection(), new BungeeLoginSession(username, registered, profile));
 
         String ip = source.getAddress().getAddress().getHostAddress();
-        plugin.getCore().getPendingLogin().put(ip + username, new Object());
+        plugin.getCore().addLoginAttempt(ip, username);
     }
 
     @Override

bungee/src/main/java/com/github/games647/fastlogin/bungee/task/AsyncToggleMessage.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -64,12 +64,12 @@ public class AsyncToggleMessage implements Runnable {
     private void turnOffPremium() {
         StoredProfile playerProfile = core.getStorage().loadProfile(targetPlayer);
         //existing player is already cracked
-        if (playerProfile.isSaved() && !playerProfile.isPremium()) {
+        if (playerProfile.isExistingPlayer() && !playerProfile.isOnlinemodePreferred()) {
             sendMessage("not-premium");
             return;
         }
 
-        playerProfile.setPremium(false);
+        playerProfile.setOnlinemodePreferred(false);
         playerProfile.setId(null);
         core.getStorage().save(playerProfile);
         PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName()))
@@ -81,12 +81,12 @@ public class AsyncToggleMessage implements Runnable {
 
     private void activatePremium() {
         StoredProfile playerProfile = core.getStorage().loadProfile(targetPlayer);
-        if (playerProfile.isPremium()) {
+        if (playerProfile.isOnlinemodePreferred()) {
             sendMessage("already-exists");
             return;
         }
 
-        playerProfile.setPremium(true);
+        playerProfile.setOnlinemodePreferred(true);
         core.getStorage().save(playerProfile);
         PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName()))
             ? PremiumToggleReason.COMMAND_OTHER : PremiumToggleReason.COMMAND_SELF;

bungee/src/main/java/com/github/games647/fastlogin/bungee/task/FloodgateAuthTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/java/com/github/games647/fastlogin/bungee/task/ForceLoginTask.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

bungee/src/main/resources/bungee.yml

@@ -11,8 +11,6 @@ author: games647, https://github.com/games647/FastLogin/graphs/contributors
 softDepends:
     # BungeeCord auth plugins
     - BungeeAuth
-    - BungeeCordAuthenticatorBungee
-    - SodionAuth
     # Bedrock Player Bridge
     - Geyser-BungeeCord
     - floodgate

bungee/src/test/java/com/github/games647/fastlogin/bungee/listener/ConnectListenerTest.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

checkstyle.xml

@@ -5,7 +5,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2023 games647 and contributors
+    Copyright (c) 2015-2024 games647 and contributors
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
@@ -29,35 +29,6 @@
 <!DOCTYPE module PUBLIC
           "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
           "https://checkstyle.org/dtds/configuration_1_3.dtd">
-
-<!--
-
-  Checkstyle configuration that checks the sun coding conventions from:
-
-    - the Java Language Specification at
-      https://docs.oracle.com/javase/specs/jls/se11/html/index.html
-
-    - the Sun Code Conventions at https://www.oracle.com/java/technologies/javase/codeconventions-contents.html
-
-    - the Javadoc guidelines at
-      https://www.oracle.com/technical-resources/articles/java/javadoc-tool.html
-
-    - the JDK Api documentation https://docs.oracle.com/en/java/javase/11/
-
-    - some best practices
-
-  Checkstyle is very configurable. Be sure to read the documentation at
-  https://checkstyle.org (or in your downloaded distribution).
-
-  Most Checks are configurable, be sure to consult the documentation.
-
-  To completely disable a check, just comment it out or delete it from the file.
-  To suppress certain violations please review suppression filters.
-
-  Finally, it is worth reading the documentation.
-
--->
-
 <module name="Checker">
   <!--
       If you set the basedir property below, then all reported file
@@ -220,6 +191,12 @@
       <property name="optional" value="true"/>
     </module>
 
+    <!-- Suppress filters via comments -->
+    <!-- https://stackoverflow.com/a/4023351/9767089 -->
+    <module name="SuppressionCommentFilter">
+      <property name="offCommentFormat" value="CHECKSTYLE.OFF\: ([\w\|]+)"/>
+      <property name="onCommentFormat" value="CHECKSTYLE.ON\: ([\w\|]+)"/>
+      <property name="checkFormat" value="$1"/>
+    </module>
   </module>
-
 </module>

core/pom.xml

@@ -4,7 +4,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2023 games647 and contributors
+    Copyright (c) 2015-2024 games647 and contributors
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
@@ -39,6 +39,11 @@
     <artifactId>fastlogin.core</artifactId>
     <packaging>jar</packaging>
 
+    <properties>
+        <!-- Still force Java 8 for the remaining project -->
+        <maven.compiler.release>8</maven.compiler.release>
+    </properties>
+
     <name>FastLoginCore</name>
 
     <repositories>
@@ -55,7 +60,7 @@
         </repository>
         <!-- Floodgate -->
         <repository>
-            <id>opencollab-snapshot</id>
+            <id>opencollab</id>
             <url>https://repo.opencollab.dev/maven-snapshots/</url>
             <releases>
                 <enabled>false</enabled>
@@ -63,6 +68,56 @@
         </repository>
     </repositories>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.4.1</version>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>com.github.games647.fastlogin.core</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>jdk21</id>
+            <activation>
+                <jdk>[21,)</jdk>
+            </activation>
+            <build>
+                <pluginManagement>
+                    <plugins>
+                        <plugin>
+                            <artifactId>maven-compiler-plugin</artifactId>
+                            <executions>
+                                <execution>
+                                    <id>jdk21</id>
+                                    <goals>
+                                        <goal>compile</goal>
+                                    </goals>
+                                    <configuration>
+                                        <release>21</release>
+                                        <compileSourceRoots>
+                                            <compileSourceRoot>${project.basedir}/src/main/java21</compileSourceRoot>
+                                        </compileSourceRoots>
+                                        <multiReleaseOutput>true</multiReleaseOutput>
+                                    </configuration>
+                                </execution>
+                            </executions>
+                        </plugin>
+                    </plugins>
+                </pluginManagement>
+            </build>
+        </profile>
+    </profiles>
+
     <dependencies>
         <!-- Libraries that we shade into the project -->
 
@@ -70,7 +125,7 @@
         <dependency>
             <groupId>com.zaxxer</groupId>
             <artifactId>HikariCP</artifactId>
-            <version>4.0.3</version>
+            <version>5.1.0</version>
             <exclusions>
                 <!-- HikariCP uses an old version of this API that has a typo in the service interface -->
                 <!-- We will use the api provided by the jdk14 dependency -->
@@ -85,20 +140,21 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
-            <version>2.0.7</version>
+            <version>2.0.13</version>
         </dependency>
 
-        <!-- snakeyaml is present in Bungee, Spigot, Cauldron, so we could use this independent implementation -->
+        <!-- snakeyaml is present in Bungee, Spigot, so we could use this independent implementation -->
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-config</artifactId>
-            <version>1.19-R0.1-SNAPSHOT</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>*</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-            </exclusions>
+            <version>1.20-R0.2-SNAPSHOT</version>
+        </dependency>
+
+        <!-- This is optional in BungeeCord-config, so we include it here manually -->
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>2.2</version>
         </dependency>
 
         <!--Floodgate for Xbox Live Authentication-->
@@ -147,46 +203,10 @@
         <dependency>
             <groupId>com.github.games647</groupId>
             <artifactId>craftapi</artifactId>
-            <version>0.6.2</version>
-        </dependency>
-
-        <!-- APIs we can use because they are available in all platforms (Spigot, Bungee, Velocity) -->
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <!-- Old version for velocity -->
-            <version>25.1-jre</version>
-            <!-- Exclude compile time dependencies not marked as such on upstream  -->
-            <exclusions>
-                <exclusion>
-                    <groupId>com.google.code.findbugs</groupId>
-                    <artifactId>jsr305</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.checkerframework</groupId>
-                    <artifactId>checker-qual</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>com.google.errorprone</groupId>
-                    <artifactId>error_prone_annotations</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>com.google.j2objc</groupId>
-                    <artifactId>j2objc-annotations</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.codehaus.mojo</groupId>
-                    <artifactId>animal-sniffer-annotations</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-
-        <dependency>
-            <groupId>com.google.code.gson</groupId>
-            <artifactId>gson</artifactId>
-            <version>2.10</version>
+            <version>1.0-SNAPSHOT</version>
         </dependency>
 
+        <!-- Database driver included in Spigot -->
         <dependency>
             <groupId>org.xerial</groupId>
             <artifactId>sqlite-jdbc</artifactId>

core/src/main/java/com/github/games647/fastlogin/core/CommonUtil.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -32,8 +32,8 @@ import org.slf4j.jul.JDK14LoggerAdapter;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
+import java.time.Duration;
 import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 
 public final class CommonUtil {
@@ -41,11 +41,11 @@ public final class CommonUtil {
     private static final char COLOR_CHAR = '&';
     private static final char TRANSLATED_CHAR = '§';
 
-    public static <K, V> ConcurrentMap<K, V> buildCache(int expireAfterWrite, int maxSize) {
+    public static <K, V> ConcurrentMap<K, V> buildCache(Duration expireAfterWrite, int maxSize) {
         CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
 
-        if (expireAfterWrite > 0) {
-            builder.expireAfterWrite(expireAfterWrite, TimeUnit.MINUTES);
+        if (expireAfterWrite != null) {
+            builder.expireAfterWrite(expireAfterWrite);
         }
 
         if (maxSize > 0) {

core/src/main/java/com/github/games647/fastlogin/core/PremiumStatus.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/ProxyAgnosticMojangResolver.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -29,8 +29,6 @@ import com.github.games647.craftapi.model.auth.Verification;
 import com.github.games647.craftapi.resolver.MojangResolver;
 
 import java.io.IOException;
-import java.io.InputStream;
-import java.net.HttpURLConnection;
 import java.net.InetAddress;
 import java.util.Optional;
 
@@ -44,38 +42,9 @@ import java.util.Optional;
  */
 public class ProxyAgnosticMojangResolver extends MojangResolver {
 
-    private static final String HOST = "sessionserver.mojang.com";
-
-    /**
-     * A formatting string containing a URL used to call the {@code hasJoined} method on mojang session servers.
-     * <p>
-     * Formatting parameters:
-     * 1. The username of the player in question
-     * 2. The serverId of this server
-     */
-    public static final String ENDPOINT = "https://" + HOST + "/session/minecraft/hasJoined?username=%s&serverId=%s";
-
     @Override
     public Optional<Verification> hasJoined(String username, String serverHash, InetAddress hostIp)
         throws IOException {
-        String url = String.format(ENDPOINT, username, serverHash);
-
-        HttpURLConnection conn = this.getConnection(url);
-        int responseCode = conn.getResponseCode();
-
-        Verification verification = null;
-
-        // Mojang session servers send HTTP 204 (NO CONTENT) when the authentication seems invalid
-        // If that's not our case, the authentication is valid, and so we can parse the response.
-        if (responseCode != HttpURLConnection.HTTP_NO_CONTENT) {
-            verification = this.parseRequest(conn, this::parseVerification);
-        }
-
-        return Optional.ofNullable(verification);
-    }
-
-    // Functional implementation of InputStreamAction, used in hasJoined method in parseRequest call
-    protected Verification parseVerification(InputStream input) throws IOException {
-        return this.readJson(input, Verification.class);
+        return super.hasJoined(username, serverHash, null);
     }
 }

core/src/main/java/com/github/games647/fastlogin/core/antibot/AntiBotService.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/antibot/RateLimiter.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/antibot/TickingRateLimiter.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -107,7 +107,7 @@ public class TickingRateLimiter implements RateLimiter {
         }
     }
 
-    private static class TimeRecord implements Comparable<Long> {
+    private static class TimeRecord implements Comparable<TimeRecord> {
 
         private final long firstMinuteRecord;
         private final long expireTime;
@@ -131,9 +131,9 @@ public class TickingRateLimiter implements RateLimiter {
             return firstMinuteRecord + expireTime <= now;
         }
 
-        @Override
-        public int compareTo(Long other) {
+        public int compareTo(long other) {
             if (other < firstMinuteRecord) {
+                // other is earlier
                 return -1;
             }
 
@@ -143,5 +143,10 @@ public class TickingRateLimiter implements RateLimiter {
 
             return 0;
         }
+
+        @Override
+        public int compareTo(TimeRecord other) {
+            return compareTo(other.firstMinuteRecord);
+        }
     }
 }

core/src/main/java/com/github/games647/fastlogin/core/hooks/AuthPlugin.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/hooks/DefaultPasswordGenerator.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/hooks/PasswordGenerator.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,8 +25,17 @@
  */
 package com.github.games647.fastlogin.core.hooks;
 
+/**
+ * Password generator for your auth plugin.
+ * @param <P> platform dependent player class
+ */
 @FunctionalInterface
 public interface PasswordGenerator<P> {
 
+    /**
+     * Generate a password for a non-registered player
+     * @param player player representation
+     * @return generated password
+     */
     String getRandomPassword(P player);
 }

core/src/main/java/com/github/games647/fastlogin/core/hooks/bedrock/BedrockService.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/hooks/bedrock/FloodgateService.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/hooks/bedrock/GeyserService.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/message/ChangePremiumMessage.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/message/ChannelMessage.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/message/LoginActionMessage.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/message/NamespaceKey.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/message/SuccessMessage.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

core/src/main/java/com/github/games647/fastlogin/core/scheduler/AbstractAsyncScheduler.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,44 +23,36 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.bukkit.listener.protocolsupport;
+package com.github.games647.fastlogin.core.scheduler;
 
-import com.github.games647.fastlogin.core.shared.LoginSource;
-import protocolsupport.api.events.PlayerLoginStartEvent;
+import org.slf4j.Logger;
 
-import java.net.InetSocketAddress;
+import java.time.Duration;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicInteger;
 
-public class ProtocolLoginSource implements LoginSource {
+public abstract class AbstractAsyncScheduler {
 
-    private final PlayerLoginStartEvent loginStartEvent;
+    protected final Logger logger;
+    protected final Executor processingPool;
+    protected final AtomicInteger currentlyRunning = new AtomicInteger();
 
-    public ProtocolLoginSource(PlayerLoginStartEvent loginStartEvent) {
-        this.loginStartEvent = loginStartEvent;
+    public AbstractAsyncScheduler(Logger logger, Executor processingPool) {
+        this.logger = logger;
+        this.processingPool = processingPool;
     }
 
-    @Override
-    public void enableOnlinemode() {
-        loginStartEvent.setOnlineMode(true);
-    }
+    public abstract CompletableFuture<Void> runAsync(Runnable task);
 
-    @Override
-    public void kick(String message) {
-        loginStartEvent.denyLogin(message);
-    }
+    public abstract CompletableFuture<Void> runAsyncDelayed(Runnable task, Duration delay);
 
-    @Override
-    public InetSocketAddress getAddress() {
-        return loginStartEvent.getConnection().getRawAddress();
-    }
-
-    public PlayerLoginStartEvent getLoginStartEvent() {
-        return loginStartEvent;
-    }
-
-    @Override
-    public String toString() {
-        return this.getClass().getSimpleName() + '{'
-            + "loginStartEvent=" + loginStartEvent
-            + '}';
+    protected void process(Runnable task) {
+        currentlyRunning.incrementAndGet();
+        try {
+            task.run();
+        } finally {
+            currentlyRunning.getAndDecrement();
+        }
     }
 }

core/src/main/java/com/github/games647/fastlogin/core/scheduler/AsyncScheduler.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,13 +23,13 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package com.github.games647.fastlogin.core;
+package com.github.games647.fastlogin.core.scheduler;
 
 import org.slf4j.Logger;
 
+import java.time.Duration;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
-import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * This limits the number of threads that are used at maximum. Thread creation can be very heavy for the CPU and
@@ -38,25 +38,14 @@ import java.util.concurrent.atomic.AtomicInteger;
  * is limited by the size of our database pool. The goal is to separate concerns into processing and blocking only
  * threads.
  */
-public class AsyncScheduler {
-
-    private static final int MAX_CAPACITY = 1024;
-
-    //todo: single thread for delaying and scheduling tasks
-    private final Logger logger;
-
-    // 30 threads are still too many - the optimal solution is to separate into processing and blocking threads
-    // where processing threads could only be max number of cores while blocking threads could be minimized using
-    // non-blocking I/O and a single event executor
-    private final Executor processingPool;
-
-    private final AtomicInteger currentlyRunning = new AtomicInteger();
+public class AsyncScheduler extends AbstractAsyncScheduler {
 
     public AsyncScheduler(Logger logger, Executor processingPool) {
-        this.logger = logger;
-        this.processingPool = processingPool;
+        super(logger, processingPool);
+        logger.info("Using legacy scheduler");
     }
 
+    @Override
     public CompletableFuture<Void> runAsync(Runnable task) {
         return CompletableFuture.runAsync(() -> process(task), processingPool).exceptionally(error -> {
             logger.warn("Error occurred on thread pool", error);
@@ -64,12 +53,22 @@ public class AsyncScheduler {
         });
     }
 
-    private void process(Runnable task) {
-        currentlyRunning.incrementAndGet();
-        try {
-            task.run();
-        } finally {
-            currentlyRunning.getAndDecrement();
-        }
+    @Override
+    public CompletableFuture<Void> runAsyncDelayed(Runnable task, Duration delay) {
+        return CompletableFuture.runAsync(() -> {
+            currentlyRunning.incrementAndGet();
+            try {
+                Thread.sleep(delay.toMillis());
+                process(task);
+            } catch (InterruptedException interruptedException) {
+                // restore interrupt flag
+                Thread.currentThread().interrupt();
+            } finally {
+                currentlyRunning.getAndDecrement();
+            }
+        }, processingPool).exceptionally(error -> {
+            logger.warn("Error occurred on thread pool", error);
+            return null;
+        });
     }
 }

core/src/main/java/com/github/games647/fastlogin/core/shared/FastLoginCore.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -55,12 +55,12 @@ import java.net.Proxy.Type;
 import java.net.UnknownHostException;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.time.Duration;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
-import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 
@@ -78,8 +78,10 @@ public class FastLoginCore<P extends C, C, T extends PlatformPlugin<C>> {
     private static final long MAX_EXPIRE_RATE = 1_000_000;
 
     private final Map<String, String> localeMessages = new ConcurrentHashMap<>();
-    private final ConcurrentMap<String, Object> pendingLogin = CommonUtil.buildCache(5, -1);
-    private final Collection<UUID> pendingConfirms = new HashSet<>();
+    private final ConcurrentMap<String, Object> pendingLogin = CommonUtil.buildCache(
+            Duration.ofMinutes(5), -1
+    );
+
     private final T plugin;
 
     private MojangResolver resolver;
@@ -119,7 +121,7 @@ public class FastLoginCore<P extends C, C, T extends PlatformPlugin<C>> {
 
         // Initialize the resolver based on the config parameter
         this.resolver = this.config.getBoolean("useProxyAgnosticResolver", false)
-            ? new ProxyAgnosticMojangResolver() : new MojangResolver();
+                ? new ProxyAgnosticMojangResolver() : new MojangResolver();
 
         antiBot = createAntiBotService(config.getSection("anti-bot"));
         Set<Proxy> proxies = config.getStringList("proxies")
@@ -140,7 +142,6 @@ public class FastLoginCore<P extends C, C, T extends PlatformPlugin<C>> {
 
         resolver.setMaxNameRequests(config.getInt("mojang-request-limit"));
         resolver.setProxySelector(new RotatingProxySelector(proxies));
-        resolver.setOutgoingAddresses(addresses);
     }
 
     private AntiBotService createAntiBotService(Configuration botSection) {
@@ -160,12 +161,12 @@ public class FastLoginCore<P extends C, C, T extends PlatformPlugin<C>> {
 
         Action action = Action.Ignore;
         switch (botSection.getString("action", "ignore")) {
-            case "ignore":
-                action = Action.Ignore;
-                break;
             case "block":
                 action = Action.Block;
                 break;
+            case "ignore":
+                action = Action.Ignore;
+                break;
             default:
                 plugin.getLog().warn("Invalid anti bot action - defaulting to ignore");
         }
@@ -272,19 +273,23 @@ public class FastLoginCore<P extends C, C, T extends PlatformPlugin<C>> {
         this.passwordGenerator = passwordGenerator;
     }
 
-    public ConcurrentMap<String, Object> getPendingLogin() {
-        return pendingLogin;
+    public void addLoginAttempt(String ip, String username) {
+        pendingLogin.put(ip + username, new Object());
     }
 
-    public Collection<UUID> getPendingConfirms() {
-        return pendingConfirms;
+    public boolean hasFailedLogin(String ip, String username) {
+        if (!config.get("secondAttemptCracked", false)) {
+            return false;
+        }
+
+        return pendingLogin.remove(ip + username) != null;
     }
 
     public AuthPlugin<P> getAuthPluginHook() {
         return authPlugin;
     }
 
-    public AntiBotService getAntiBot() {
+    public AntiBotService getAntiBotService() {
         return antiBot;
     }
 

core/src/main/java/com/github/games647/fastlogin/core/shared/FloodgateManagement.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -33,6 +33,7 @@ import org.geysermc.floodgate.api.player.FloodgatePlayer;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
+import java.util.Locale;
 import java.util.Optional;
 import java.util.UUID;
 
@@ -61,9 +62,9 @@ public abstract class FloodgateManagement<P extends C, C, L extends LoginSession
         this.username = getName(player);
 
         //load values from config.yml
-        autoLoginFloodgate = core.getConfig().get("autoLoginFloodgate").toString().toLowerCase();
-        autoRegisterFloodgate = core.getConfig().get("autoRegisterFloodgate").toString().toLowerCase();
-        allowNameConflict = core.getConfig().get("allowFloodgateNameConflict").toString().toLowerCase();
+        autoLoginFloodgate = core.getConfig().getString("autoLoginFloodgate").toLowerCase(Locale.ROOT);
+        autoRegisterFloodgate = core.getConfig().getString("autoRegisterFloodgate").toLowerCase(Locale.ROOT);
+        allowNameConflict = core.getConfig().getString("allowFloodgateNameConflict").toLowerCase(Locale.ROOT);
     }
 
     @Override
@@ -80,13 +81,47 @@ public abstract class FloodgateManagement<P extends C, C, L extends LoginSession
         }
 
         profile = core.getStorage().loadProfile(username);
+
+        if (profile.isExistingPlayer()) {
+            if (profile.isFloodgateMigrated()) {
+                if (profile.getFloodgate() == FloodgateState.TRUE && isLinked) {
+                    core.getPlugin().getLog()
+                            .info("Player {} is already stored by FastLogin as a non-linked Bedrock Edition player",
+                                    username);
+                    return;
+                } else if (profile.getFloodgate() == FloodgateState.FALSE && isLinked) {
+                    profile.setFloodgate(FloodgateState.LINKED);
+                    core.getPlugin().getLog().info(
+                            "Player {} will be changed from a Java player to a linked Floodgate player",
+                            username);
+                }
+            } else {
+                if (isLinked) {
+                    profile.setFloodgate(FloodgateState.LINKED);
+                    core.getPlugin().getLog().info(
+                            "Player {} will be migrated to the v2 database schema as a linked Floodgate user",
+                            username);
+                } else {
+                    profile.setFloodgate(FloodgateState.TRUE);
+                    core.getPlugin().getLog().info(
+                            "Player {} will be migrated to the v2 database schema as a Floodgate user", username);
+                }
+            }
+        } else {
+            if (isLinked) {
+                profile.setFloodgate(FloodgateState.LINKED);
+            } else {
+                profile.setFloodgate(FloodgateState.TRUE);
+            }
+        }
+
         AuthPlugin<P> authPlugin = core.getAuthPluginHook();
 
         try {
             //maybe Bungee without auth plugin
             if (authPlugin == null) {
                 if (profile != null) {
-                    isRegistered = profile.isPremium();
+                    isRegistered = profile.isOnlinemodePreferred();
                 } else {
                     isRegistered = false;
                 }
@@ -119,13 +154,17 @@ public abstract class FloodgateManagement<P extends C, C, L extends LoginSession
             }
         }
 
+        // defer auto registration, if it's not enabled in the config
         if (!isRegistered && !isAutoAuthAllowed(autoRegisterFloodgate)) {
             return;
         }
 
-        //logging in from bedrock for a second time threw an error with UUID
-        if (profile == null) {
-            profile = new StoredProfile(getUUID(player), username, true, getAddress(player).toString());
+        // stop the auto login procedure, if the current connection's parameters don't match the one stored in our
+        // database
+        // ex. we stored a LINKED account, but the current connection is not linked
+        if ((profile.getFloodgate() == FloodgateState.LINKED && !isLinked)
+            || (profile.getFloodgate() == FloodgateState.TRUE && isLinked)) {
+            return;
         }
 
         //start Bukkit/Bungee specific tasks

core/src/main/java/com/github/games647/fastlogin/core/shared/FloodgateState.java

@@ -0,0 +1,86 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015-2024 games647 and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.github.games647.fastlogin.core.shared;
+
+public enum FloodgateState {
+
+    /**
+     * Purely Java profile
+     */
+    FALSE(0),
+
+    /**
+     * Purely Bedrock profile
+     */
+    TRUE(1),
+
+    /**
+     * Bedrock profile is bidirectional associated with the Java Mojang profile.
+     */
+    LINKED(2),
+
+    /**
+     * Data before floodgate database migration. Floodgate state is unknown.
+     */
+    NOT_MIGRATED(3);
+
+    private final int value;
+
+    FloodgateState(int value) {
+        this.value = value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+
+    /**
+     * Convert a number to FloodgateState
+     * <ol start="0">
+     *     <li>False</li>
+     *     <li>True</li>
+     *     <li>Linked</li>
+     *     <li>Not Migrated</li>
+     * </ol>
+     * @param num the number, most likely loaded from the database
+     * @return FloodgateStatus on success, null otherwise
+     */
+    public static FloodgateState fromInt(int num) {
+        // using Enum.values()[i] is expensive as per https://stackoverflow.com/a/8762387/9767089
+        switch (num) {
+            case 0:
+                return FloodgateState.FALSE;
+            case 1:
+                return FloodgateState.TRUE;
+            case 2:
+                return FloodgateState.LINKED;
+            case 3:
+                return FloodgateState.NOT_MIGRATED;
+            default:
+                return null;
+        }
+    }
+}

core/src/main/java/com/github/games647/fastlogin/core/shared/ForceLoginManagement.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -62,7 +62,7 @@ public abstract class ForceLoginManagement<P extends C, C, L extends LoginSessio
                 //premium player
                 AuthPlugin<P> authPlugin = core.getAuthPluginHook();
                 if (authPlugin == null) {
-                    //maybe only bungeecord plugin
+                    // maybe only bungeecord plugin
                     onForceActionSuccess(session);
                 } else {
                     boolean success = true;
@@ -81,7 +81,7 @@ public abstract class ForceLoginManagement<P extends C, C, L extends LoginSessio
                         //update only on success to prevent corrupt data
                         if (playerProfile != null) {
                             playerProfile.setId(session.getUuid());
-                            playerProfile.setPremium(true);
+                            playerProfile.setOnlinemodePreferred(true);
                             storage.save(playerProfile);
                         }
 
@@ -91,7 +91,7 @@ public abstract class ForceLoginManagement<P extends C, C, L extends LoginSessio
             } else if (playerProfile != null) {
                 //cracked player
                 playerProfile.setId(null);
-                playerProfile.setPremium(false);
+                playerProfile.setOnlinemodePreferred(false);
                 storage.save(playerProfile);
             }
         } catch (Exception ex) {

core/src/main/java/com/github/games647/fastlogin/core/shared/JoinManagement.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2023 games647 and contributors
+ * Copyright (c) 2015-2024 games647 and contributors
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -48,73 +48,88 @@ public abstract class JoinManagement<P extends C, C, S extends LoginSource> {
     }
 
     public void onLogin(String username, S source) {
-        core.getPlugin().getLog().info("Handling player {}", username);
-        StoredProfile profile = core.getStorage().loadProfile(username);
-        if (profile == null) {
-            return;
-        }
-
         //check if the player is connecting through Bedrock Edition
         if (bedrockService != null && bedrockService.isBedrockConnection(username)) {
-            //perform Bedrock specific checks and skip Java checks, if they are not needed
+            //perform Bedrock specific checks and skip Java checks if no longer needed
             if (bedrockService.performChecks(username, source)) {
                 return;
             }
         }
 
-        callFastLoginPreLoginEvent(username, source, profile);
+        StoredProfile profile = core.getStorage().loadProfile(username);
+        //can't be a premium Java player, if it's not saved in the database
+        if (profile == null) {
+            return;
+        }
 
-        Configuration config = core.getConfig();
+        if (profile.isFloodgateMigrated()) {
+            if (profile.getFloodgate() == FloodgateState.TRUE) {
+                // migrated and enabled floodgate player, however the above bedrocks fails, so the current connection
+                // isn't premium
+                return;
+            }
+        } else {
+            profile.setFloodgate(FloodgateState.FALSE);
+            core.getPlugin().getLog().info(
+                    "Player {} will be migrated to the v2 database schema as a JAVA user", username
+            );
+        }
+
+        callFastLoginPreLoginEvent(username, source, profile);
 
         String ip = source.getAddress().getAddress().getHostAddress();
         profile.setLastIp(ip);
-        try {
-            if (profile.isSaved()) {
-                if (profile.isPremium()) {
-                    core.getPlugin().getLog().info("Requesting premium login for registered player: {}", username);
-                    requestPremiumLogin(source, profile, username, true);
-                } else {
-                    if (isValidUsername(source, profile)) {
-                        startCrackedSession(source, profile, username);
-                    }
-                }
+        if (profile.isExistingPlayer()) {
+            if (profile.isOnlinemodePreferred()) {
+                core.getPlugin().getLog().info("Requesting premium login for registered player: {}", username);
+                requestPremiumLogin(source, profile, username, true);
             } else {
-                if (core.getPendingLogin().remove(ip + username) != null && config.get("secondAttemptCracked", false)) {
-                    core.getPlugin().getLog().info("Second attempt login -> cracked {}", username);
-
-                    //first login request failed so make a cracked session
-                    startCrackedSession(source, profile, username);
-                    return;
-                }
-
-                Optional<Profile> premiumUUID = Optional.empty();
-                if (config.get("nameChangeCheck", false) || config.get("autoRegister", false)) {
-                    premiumUUID = core.getResolver().findProfile(username);
-                }
-
-                if (!premiumUUID.isPresent()
-                        || (!checkNameChange(source, username, premiumUUID.get())
-                        && !checkPremiumName(source, username, profile))) {
-                    //nothing detected the player as premium -> start a cracked session
-                    if (core.getConfig().get("switchMode", false)) {
-                        source.kick(core.getMessage("switch-kick-message"));
-                        return;
-                    }
-
+                if (isValidUsername(source, profile)) {
                     startCrackedSession(source, profile, username);
                 }
             }
+        } else {
+            performNewPlayerLogin(username, source, ip, profile);
+        }
+    }
+
+    private void performNewPlayerLogin(String username, S source, String ip, StoredProfile profile) {
+        try {
+            if (core.hasFailedLogin(ip, username)) {
+                core.getPlugin().getLog().info("Second attempt login -> cracked {}", username);
+
+                //first login request failed so make a cracked session
+                startCrackedSession(source, profile, username);
+                return;
+            }
+
+            Configuration config = core.getConfig();
+            Optional<Profile> premiumUUID = Optional.empty();
+            if (config.get("nameChangeCheck", false) || config.get("autoRegister", false)) {
+                premiumUUID = core.getResolver().findProfile(username);
+            }
+
+            if (premiumUUID.isPresent()
+                    || (!isNameChanged(source, username, premiumUUID.get())
+                    && !isUsernameAvailable(source, username, profile))) {
+                //nothing detected the player as premium -> start a cracked session
+                if (core.getConfig().get("switchMode", false)) {
+                    source.kick(core.getMessage("switch-kick-message"));
+                    return;
+                }
+
+                startCrackedSession(source, profile, username);
+            }
         } catch (RateLimitException rateLimitEx) {
             core.getPlugin().getLog().error("Mojang's rate limit reached for {}. The public IPv4 address of this"
-                + " server issued more than 600 Name -> UUID requests within 10 minutes. After those 10"
-                + " minutes we can make requests again.", username);
+                    + " server issued more than 600 Name -> UUID requests within 10 minutes. After those 10"
+                    + " minutes we can make requests again.", username);
         } catch (Exception ex) {
-            core.getPlugin().getLog().error("Failed to check premium state for {}", username, ex);
             core.getPlugin().getLog().error("Failed to check premium state of {}", username, ex);
         }
     }
 
-    protected boolean isValidUsername(LoginSource source, StoredProfile profile) throws Exception {
+    protected boolean isValidUsername(LoginSource source, StoredProfile profile) {
         if (bedrockService != null && bedrockService.isUsernameForbidden(profile)) {
             core.getPlugin().getLog().info("Floodgate Prefix detected on cracked player");
             source.kick("Your username contains illegal characters");
@@ -124,7 +139,7 @@ public abstract class JoinManagement<P extends C, C, S extends LoginSource> {
         return true;
     }
 
-    private boolean checkPremiumName(S source, String username, StoredProfile profile) throws Exception {
+    private boolean isUsernameAvailable(S source, String username, StoredProfile profile) throws Exception {
         core.getPlugin().getLog().info("GameProfile {} uses a premium username", username);
         if (core.getConfig().get("autoRegister", false) && (authHook == null || !authHook.isRegistered(username))) {
             requestPremiumLogin(source, profile, username, false);
@@ -134,11 +149,17 @@ public abstract class JoinManagement<P extends C, C, S extends LoginSource> {
         return false;
     }
 
-    private boolean checkNameChange(S source, String username, Profile profile) {
+    private boolean isNameChanged(S source, String username, Profile profile) {
         //user not exists in the db
         if (core.getConfig().get("nameChangeCheck", false)) {
             StoredProfile storedProfile = core.getStorage().loadProfile(profile.getId());
             if (storedProfile != null) {
+                if (storedProfile.getFloodgate() == FloodgateState.TRUE) {
+                    core.getPlugin().getLog()
+                            .info("Player {} is already stored by FastLogin as a Bedrock Edition player.", username);
+                    return false;
+                }
+
                 //uuid exists in the database
                 core.getPlugin().getLog().info("GameProfile {} changed it's username", profile);