Fix parsing of illegal uuids with spaces

Bump advanced-security/maven-dependency-submission-action from 3.0.2 to 4.0.0

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -1,6 +1,6 @@
 name: 🐞 Bug Report
 description: Something isn't working, broken, not expected behavior
-labels: [bug]
+labels: [ bug ]
 body:
   - type: markdown
     attributes:
@@ -36,8 +36,7 @@ body:
     attributes:
       label: Server log
       description: The error, stacktrace or link the complete log. You can use the links above for long versions.
-      render: shell
-      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
@@ -60,9 +59,11 @@ body:
       label: Relevance
       description: Check list for previous tickets
       options:
-        - label: I tried the latest build
+        - 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+            (build refers to development builds not necessary a release version; i.e. v1.10 is out of date)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/config.yml

@@ -7,5 +7,6 @@
 contact_links:
   - name: 📌 Questions
     url: https://github.com/games647/FastLogin/discussions
-    about: You want to ask something
+    about:
+      You want to ask something - general questions. Example includes how to set it up or how it is working internally
 

.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -1,25 +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

@@ -14,22 +14,22 @@ updates:
     directory: "/"
     schedule:
       interval: weekly
+
+    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"
+
     ignore:
-      - dependency-name: com.google.code.gson:gson
-        versions:
-          - "> 2.2.4"
-      - dependency-name: com.google.guava
-      - dependency-name: me.clip:placeholderapi
-        versions:
-          - "> 2.10.8, < 2.11"
-      - dependency-name: net.md-5:bungeecord-config
-        versions:
-          - "> 1.12-SNAPSHOT"
-      - dependency-name: de.xxschrandxx.bca:BungeeCordAuthenticator
-        versions:
-          - 0.0.3
-      - dependency-name: com.zaxxer:HikariCP
-        versions:
-          - 4.0.0
-          - 4.0.2
-          - 4.0.3
+      # HikariCP dropped Java 8 support with 5.0
+      - dependency-name: "com.zaxxer:HikariCP"
+        update-types: ["version-update:semver-major"]
+      # SnakeYAML has breaking changes with 2.0
+      - dependency-name: "org.yaml:snakeyaml"
+        update-types: ["version-update:semver-major"]

.github/pull_request_template.md

@@ -1,8 +1,11 @@
 [//]: # (Lines in this format are considered as comments and will not be displayed.)
+
 [//]: # (If your work is in progress, please consider making a draft pull request.)
 
 ### Summary of your change
-[//]: # (Example: motiviation, enhancement)
+
+[//]: # (Example: motivation, enhancement)
 
 ### Related issue
+
 [//]: # (Reference it using '#NUMBER'. Ex: Fixes/Related #...)

.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
@@ -20,48 +20,46 @@ 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
       security-events: write
 
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         # Languages to scan
         language: [ 'java' ]
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
+      - name: Checkout repository
+        uses: actions/checkout@v4
 
-    # Setup Java
-    - name: Set up JDK
-      uses: actions/setup-java@v2.3.0
-      with:
-        distribution: 'adopt'
-        # Use Java 16, because it's minimum required version by Geyser
-        java-version: 16
-        cache: 'maven'
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
 
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
-      with:
-        languages: ${{ matrix.language }}
+      # Setup Java
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version-file: '.java-version'
+          cache: 'maven'
 
-    # Cache build process too like in the maven config
-    - uses: actions/cache@v2.1.4
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-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
 
-    # 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@v1
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{matrix.language}}"

.github/workflows/maven.yml

@@ -2,7 +2,7 @@
 # including making pull requests review easier
 
 # Human-readable name in the actions tab
-name: Java CI
+name: Maven Build
 
 # Build on every pull request regardless of the branch
 # Wiki: https://help.github.com/en/actions/reference/events-that-trigger-workflows
@@ -20,24 +20,28 @@ jobs:
 
     # Environment image - always use the newest OS
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
 
     # Run steps
     steps:
       # Pull changes
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v4
 
       # Setup Java
       - name: Set up JDK
-        uses: actions/setup-java@v2.3.0
+        uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          # Use Java 16, because it's minimum required version by Geyser
-          java-version: 16
+          java-version-file: '.java-version'
           cache: 'maven'
 
       # Build and test (included in package)
       - name: Build with Maven and test
         # Run non-interactive, package (with compile+test),
-        # ignore snapshot updates, because they are likely to have breaking changes, enforce checksums to validate
-        # possible errors in dependencies
-        run: mvn test --batch-mode --no-snapshot-updates --strict-checksums --file pom.xml
+        # 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
+
+      - name: Update dependency graph
+        if: ${{ github.event_name == 'push' }}
+        uses: advanced-security/maven-dependency-submission-action@v4.0.0

.java-version

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

CHANGELOG.md

@@ -35,7 +35,7 @@
 * Automatically register accounts if they are not in the auth plugin database but in the FastLogin database
 * Update BungeeAuth dependency and use the new API. Please update your plugin if you still use the old one.
 * Remove deprecated API methods from the last version
-* Finally update the IP column on every login
+* Finally, update the IP column on every login
 * No duplicate session login
 * Fix timestamp parsing in newer versions of SQLite
 * Fix Spigot console command invocation sends result to in game players
@@ -82,7 +82,7 @@
 * Fix player entry is not saved if namechangecheck is enabled
 * Fix skin applies for third-party plugins
 * Switch to mcapi.ca for uuid lookups
-* Fix BungeeCord not setting an premium uuid
+* Fix BungeeCord not setting a premium uuid
 * Fix setting skin on Cauldron
 * Fix saving on name change
 
@@ -148,7 +148,7 @@
 ### 1.2
 
 * Fix race condition in BungeeCord
-* Fix dead lock in xAuth
+* Fix deadlock in xAuth
 * Added API methods for plugins to set their own password generator
 * Added API methods for plugins to set their own auth plugin hook
 => Added support for AdvancedLogin
@@ -182,7 +182,7 @@
 * Added a forwardSkin config option
 * Added premium UUID support
 * Updated to the newest changes of Spigot
-* Removes the need of an Bukkit auth plugin if you use a bungeecord one
+* Removes the need of a Bukkit auth plugin if you use a bungeecord one
 * Optimize performance and thread-safety
 * Fixed BungeeCord support
 * Changed config option auto-login to auto-register to clarify the usage

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2021 games647 and contributors
+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
@@ -19,4 +19,3 @@ 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.
-

README.md

@@ -19,7 +19,7 @@ So they don't need to enter passwords. This is also called auto login (auto-logi
 * No client modifications needed
 * Good performance by using async operations
 * Locale messages
-* Support for Bedrock players proxied through FloodGate
+* Support for Bedrock players proxies through FloodGate
 
 ## Issues
 
@@ -60,12 +60,13 @@ Possible values: `Premium`, `Cracked`, `Unknown`
 
 ## Requirements
 
-* Plugin:
-    * [ProtocolLib](https://www.spigotmc.org/resources/protocollib.1997/) or
-    * [ProtocolSupport](https://www.spigotmc.org/resources/protocolsupport.7201/)
-* [Spigot](https://www.spigotmc.org) 1.8.8+
-* Java 8+
-* Run Spigot (or a fork e.g. Paper) and/or BungeeCord (or a fork e.g. Waterfall) in offline mode
+* Java 17+ (Recommended)
+* Server software in offlinemode:
+  * Spigot (or a fork e.g. Paper) 1.8.8+
+    * Protocol plugin:
+      * [ProtocolLib 5.1+](https://www.spigotmc.org/resources/protocollib.1997/) or
+      * [ProtocolSupport](https://www.spigotmc.org/resources/protocolsupport.7201/)
+  * Latest BungeeCord (or a fork e.g. Waterfall) or Velocity
 * An auth plugin.
 
 ### Supported auth plugins
@@ -77,7 +78,6 @@ Possible values: `Premium`, `Cracked`, `Unknown`
 * [CrazyLogin](https://dev.bukkit.org/bukkit-plugins/crazylogin/)
 * [LoginSecurity](https://dev.bukkit.org/bukkit-plugins/loginsecurity/)
 * [LogIt](https://github.com/games647/LogIt)
-* [SodionAuth (2.0+)](https://github.com/MohistMC/SodionAuth)
 * [UltraAuth](https://dev.bukkit.org/bukkit-plugins/ultraauth-aa/)
 * [UserLogin](https://www.spigotmc.org/resources/userlogin.80669/)
 * [xAuth](https://dev.bukkit.org/bukkit-plugins/xauth/)
@@ -86,7 +86,6 @@ Possible values: `Premium`, `Cracked`, `Unknown`
 
 * [BungeeAuth](https://www.spigotmc.org/resources/bungeeauth.493/)
 * [BungeeAuthenticator](https://www.spigotmc.org/resources/bungeecordauthenticator.87669/)
-* [SodionAuth (2.0+)](https://github.com/MohistMC/SodionAuth)
 
 ## Network requests
 
@@ -102,20 +101,28 @@ 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 FastLogin (or `FastLoginBukkit` for newer versions)
+3. Set your server in offline mode by setting the value `onlinemode` in your server.properties to false
 
-### BungeeCord/Waterfall
+### BungeeCord/Waterfall or Velocity
 
-1. Activate BungeeCord in the Spigot configuration
-2. Restart your server
-3. Now there is `allowed-proxies.txt` file in the FastLogin folder
-Put your stats id from the BungeeCord config into this file
-4. Activate ipForward in your BungeeCord config
-5. Download and Install FastLogin (or FastLoginBungee/FastLoginBukkit in newer versions) on BungeeCord AND Spigot
-(on the servers where your login plugin is or where player should be able to execute the commands of FastLogin)
-6. Check your database settings in the config of FastLogin on BungeeCord
-7. Set proxy and Spigot in offline mode by setting the value onlinemode in your config.yml to false
-8. You should *always* firewall your Spigot server that it's only accessible through BungeeCord
-    * https://www.spigotmc.org/wiki/bungeecord-installation/#post-installation
-    * BungeeCord doesn't support SQLite per default, so you should change the configuration to MySQL or MariaDB. For that you have to install MariaDB/MySQL on your root server first and put the credentials you made in the FastLogin config files.
+Install the plugin on both platforms, that is proxy (BungeeCord or Velocity) and backend server (Spigot).
+
+1. Activate proxy support in the server configuration
+   * This is often found in `spigot.yml` or `paper.yml`
+2. Restart the backend server
+3. Now there is `allowed-proxies.txt` file in the FastLogin folder of the restarted server
+    * BungeeCord: Put your `stats`-id from the BungeeCord config into this file
+    * Velocity: On plugin startup the plugin generates a `proxyId.txt` inside the plugins folder of the proxy
+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/PostgreSQL
+    * Velocity: `fastlogin.mariadb.jdbc.Driver` for MySQL/MariaDB/PostgreSQL
+    * Note the embedded file storage SQLite is not available
+    * MySQL/MariaDB/PostgreSQL requires an external database server running. Check your server provider if there is one available
+   or install one.
+6. Set proxy and Spigot in offline mode by setting the value `onlinemode` in your `config.yml` to false
+7. You should *always* configure the firewall for your Spigot server so that it's only accessible through your proxy
+   * This is also the case without this plugin
+   * https://www.spigotmc.org/wiki/bungeecord-installation/#post-installation

bukkit/pom.xml

@@ -4,7 +4,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2021 <Your name and contributors>
+    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
@@ -25,14 +25,18 @@
     SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
+    <properties>
+        <nettyVersion>4.1.79.Final</nettyVersion>
+    </properties>
+
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.11-SNAPSHOT</version>
+        <version>1.12-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -45,13 +49,16 @@
     <build>
         <plugins>
             <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.2.4</version>
+                <version>3.5.1</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>
@@ -83,9 +90,19 @@
                     <!-- Rename the service file too to let SLF4J api find our own relocated jdk logger -->
                     <!-- Located in META-INF/services -->
                     <transformers>
-                        <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                        <transformer
+                                implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                     </transformers>
                     <minimizeJar>true</minimizeJar>
+                    <filters>
+                        <filter>
+                            <artifact>*:*</artifact>
+                            <excludes>
+                                <exclude>META-INF/MANIFEST.MF</exclude>
+                                <exclude>**/module-info.class</exclude>
+                            </excludes>
+                        </filter>
+                    </filters>
                 </configuration>
                 <executions>
                     <execution>
@@ -109,7 +126,7 @@
         <!-- ProtocolLib -->
         <repository>
             <id>dmulloy2-repo</id>
-            <url>https://repo.dmulloy2.net/nexus/repository/public/</url>
+            <url>https://repo.dmulloy2.net/repository/public/</url>
             <snapshots>
                 <enabled>false</enabled>
             </snapshots>
@@ -119,12 +136,6 @@
         <repository>
             <id>codemc-releases</id>
             <url>https://repo.codemc.io/repository/maven-public/</url>
-        </repository>
-
-        <!-- GitHub automatic maven builds -->
-        <repository>
-            <id>jitpack.io</id>
-            <url>https://jitpack.io</url>
             <snapshots>
                 <enabled>false</enabled>
             </snapshots>
@@ -138,6 +149,15 @@
                 <enabled>false</enabled>
             </snapshots>
         </repository>
+
+        <!-- GitHub automatic maven builds -->
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -148,11 +168,18 @@
             <version>${project.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>1.33</version>
+            <scope>compile</scope>
+        </dependency>
+
         <!-- PaperSpigot API for correcting user cache usage -->
         <dependency>
             <groupId>io.papermc.paper</groupId>
             <artifactId>paper-api</artifactId>
-            <version>1.18-R0.1-SNAPSHOT</version>
+            <version>1.19-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
             <!-- Use our own newer api version -->
             <exclusions>
@@ -163,18 +190,24 @@
             </exclusions>
         </dependency>
 
-        <!-- PaperLib for checking if server uses PaperSpigot -->
         <dependency>
-            <groupId>io.papermc</groupId>
-            <artifactId>paperlib</artifactId>
-            <version>1.0.7</version>
+            <groupId>com.mojang</groupId>
+            <artifactId>datafixerupper</artifactId>
+            <version>5.0.28</version>
+            <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <!--Library for listening and sending Minecraft packets-->
         <dependency>
             <groupId>com.comphenix.protocol</groupId>
             <artifactId>ProtocolLib</artifactId>
-            <version>4.7.0</version>
+            <version>5.1.0</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
@@ -189,7 +222,7 @@
             <groupId>com.github.ProtocolSupport</groupId>
             <artifactId>ProtocolSupport</artifactId>
             <!--4.29.dev after commit about API improvements-->
-            <version>3a80c661fe</version>
+            <version>master-66b494a8dd-1</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
@@ -203,15 +236,11 @@
         <dependency>
             <groupId>org.geysermc.floodgate</groupId>
             <artifactId>api</artifactId>
-            <version>2.0-SNAPSHOT</version>
+            <version>${floodgate.version}</version>
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
-                    <groupId>io.netty</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.geysermc.cumulus</groupId>
+                    <groupId>*</groupId>
                     <artifactId>*</artifactId>
                 </exclusion>
             </exclusions>
@@ -219,7 +248,7 @@
 
         <!-- Bedrock player bridge -->
         <dependency>
-            <groupId>org.geysermc</groupId>
+            <groupId>org.geysermc.geyser</groupId>
             <artifactId>core</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
@@ -233,17 +262,23 @@
 
         <!-- We need the API, but it was excluded above -->
         <dependency>
-            <groupId>org.geysermc</groupId>
-            <artifactId>geyser-api</artifactId>
+            <groupId>org.geysermc.geyser</groupId>
+            <artifactId>api</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <!--Provide premium placeholders-->
         <dependency>
             <groupId>me.clip</groupId>
             <artifactId>placeholderapi</artifactId>
-            <version>2.11.0</version>
+            <version>2.11.5</version>
             <scope>provided</scope>
             <optional>true</optional>
             <exclusions>
@@ -258,7 +293,7 @@
         <dependency>
             <groupId>fr.xephi</groupId>
             <artifactId>authme</artifactId>
-            <version>5.4.0</version>
+            <version>5.6.0-beta2</version>
             <scope>provided</scope>
             <optional>true</optional>
             <exclusions>
@@ -272,7 +307,7 @@
         <dependency>
             <groupId>com.lenis0012.bukkit</groupId>
             <artifactId>loginsecurity</artifactId>
-            <version>3.0.2</version>
+            <version>3.3.0</version>
             <scope>provided</scope>
             <optional>true</optional>
             <exclusions>
@@ -341,17 +376,32 @@
         </dependency>
 
         <dependency>
-            <groupId>com.github.Mohist-Community.SodionAuth</groupId>
-            <artifactId>SodionAuth-Bukkit</artifactId>
-            <version>2bdfdc854b</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.github.Mohist-Community.SodionAuth</groupId>
-                    <artifactId>SodionAuth-Libs</artifactId>
-                </exclusion>
-            </exclusions>
-            <optional>true</optional>
+            <groupId>org.bouncycastle</groupId>
+            <artifactId>bcprov-jdk18on</artifactId>
+            <version>1.77</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>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 </project>

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,14 +26,16 @@
 package com.github.games647.fastlogin.bukkit;
 
 import com.github.games647.craftapi.model.skin.SkinProperty;
-import com.github.games647.fastlogin.core.StoredProfile;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
 import com.github.games647.fastlogin.core.shared.LoginSession;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Optional;
 
 /**
  * Represents a client connecting to the server.
- *
+ * <p>
  * This session is invalid if the player disconnects or the login was successful
  */
 public class BukkitLoginSession extends LoginSession {
@@ -42,35 +44,38 @@ public class BukkitLoginSession extends LoginSession {
 
     private final byte[] verifyToken;
 
+    private final ClientPublicKey clientPublicKey;
+
     private boolean verified;
 
     private SkinProperty skinProperty;
 
-    public BukkitLoginSession(String username, byte[] verifyToken, boolean registered
-            , StoredProfile profile) {
+    public BukkitLoginSession(String username, byte[] verifyToken, ClientPublicKey publicKey, boolean registered,
+                              StoredProfile profile) {
         super(username, registered, profile);
 
+        this.clientPublicKey = publicKey;
         this.verifyToken = verifyToken.clone();
     }
 
     //available for BungeeCord
     public BukkitLoginSession(String username, boolean registered) {
-        this(username, EMPTY_ARRAY, registered, null);
+        this(username, EMPTY_ARRAY, null, registered, null);
     }
 
     //cracked player
     public BukkitLoginSession(String username, StoredProfile profile) {
-        this(username, EMPTY_ARRAY, false, profile);
+        this(username, EMPTY_ARRAY, null, false, profile);
     }
 
     //ProtocolSupport
     public BukkitLoginSession(String username, boolean registered, StoredProfile profile) {
-        this(username, EMPTY_ARRAY, registered, profile);
+        this(username, EMPTY_ARRAY, null, registered, profile);
     }
 
     /**
      * Gets the verify-token the server sent to the client.
-     *
+     * <p>
      * Empty if it's a BungeeCord connection
      *
      * @return verify token from the server
@@ -79,6 +84,11 @@ public class BukkitLoginSession extends LoginSession {
         return verifyToken.clone();
     }
 
+    @Nullable
+    public ClientPublicKey getClientPublicKey() {
+        return clientPublicKey;
+    }
+
     /**
      * @return premium skin if available
      */

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,22 +26,20 @@
 package com.github.games647.fastlogin.bukkit;
 
 import com.github.games647.fastlogin.core.AsyncScheduler;
-
-import java.util.concurrent.Executor;
-import java.util.concurrent.ThreadFactory;
-
 import org.bukkit.Bukkit;
 import org.bukkit.plugin.Plugin;
 import org.slf4j.Logger;
 
+import java.util.concurrent.Executor;
+
 public class BukkitScheduler extends AsyncScheduler {
 
     private final Executor syncExecutor;
 
-    public BukkitScheduler(Plugin plugin, Logger logger, ThreadFactory threadFactory) {
-        super(logger, threadFactory);
+    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/BungeeManager.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -31,21 +31,23 @@ import com.github.games647.fastlogin.core.message.LoginActionMessage;
 import com.github.games647.fastlogin.core.message.NamespaceKey;
 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.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 org.bukkit.Bukkit;
-import org.bukkit.Server;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.messaging.PluginMessageRecipient;
-
 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;
@@ -61,7 +63,7 @@ public class BungeeManager {
     private final FastLoginBukkit plugin;
     private boolean enabled;
 
-    private final Set<UUID> firedJoinEvents = new HashSet<>();
+    private final Collection<UUID> firedJoinEvents = new HashSet<>();
 
     public BungeeManager(FastLoginBukkit plugin) {
         this.plugin = plugin;
@@ -87,33 +89,70 @@ public class BungeeManager {
     }
 
     public void initialize() {
-        try {
-            enabled = detectProxy();
-        } catch (Exception ex) {
-            plugin.getLog().warn("Cannot check proxy support. Fallback to non-proxy mode", ex);
-        }
+        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) {
+    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 {
-            return Class.forName(className).getDeclaredField(fieldName).getBoolean(null);
-        } catch (ClassNotFoundException notFoundEx) {
-            //ignore server has no proxy support
-        } catch (NoSuchFieldException | IllegalAccessException noSuchFieldException) {
-            plugin.getLog().warn("Cannot access proxy field", noSuchFieldException);
+            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() {
-        return isProxySupported("org.spigotmc.SpigotConfig", "bungee")
-                || isProxySupported("com.destroystokyo.paper.PaperConfig", "velocitySupport");
+        try {
+            if (isProxySupported("org.spigotmc.SpigotConfig", "bungee")) {
+                return true;
+            }
+        } catch (ClassNotFoundException classNotFoundException) {
+            // leave stacktrace for class not found out
+            plugin.getLog().warn("Cannot check for BungeeCord support: {}", classNotFoundException.getMessage());
+        } catch (NoSuchFieldException | IllegalAccessException ex) {
+            plugin.getLog().warn("Cannot check for BungeeCord support", ex);
+        }
+
+        try {
+            return isVelocityEnabled();
+        } catch (ClassNotFoundException classNotFoundException) {
+            plugin.getLog().warn("Cannot check for Velocity support in Paper: {}", classNotFoundException.getMessage());
+        } catch (NoSuchFieldException | IllegalAccessException | NoSuchMethodException | InvocationTargetException ex) {
+            plugin.getLog().warn("Cannot check for Velocity support in Paper", ex);
+        }
+
+        return false;
     }
 
     private void registerPluginChannels() {
@@ -147,9 +186,7 @@ public class BungeeManager {
 
             Files.deleteIfExists(legacyFile);
             try (Stream<String> lines = Files.lines(proxiesFile)) {
-                return lines.map(String::trim)
-                        .map(UUID::fromString)
-                        .collect(toSet());
+                return lines.map(String::trim).map(UUID::fromString).collect(toSet());
             }
         } catch (IOException ex) {
             plugin.getLog().error("Failed to read proxies", ex);
@@ -176,7 +213,7 @@ public class BungeeManager {
     /**
      * 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.

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,11 +25,11 @@
  */
 package com.github.games647.fastlogin.bukkit;
 
+import com.comphenix.protocol.ProtocolLibrary;
 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.ManualNameChange;
 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;
@@ -41,8 +41,15 @@ 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 io.papermc.lib.PaperLib;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.geysermc.floodgate.api.FloodgateApi;
+import org.geysermc.geyser.GeyserImpl;
+import org.jetbrains.annotations.NotNull;
+import org.slf4j.Logger;
 
 import java.net.InetSocketAddress;
 import java.nio.file.Path;
@@ -52,15 +59,6 @@ import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 
-import org.bukkit.Bukkit;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.PluginManager;
-import org.bukkit.plugin.java.JavaPlugin;
-import org.geysermc.floodgate.api.FloodgateApi;
-import org.geysermc.geyser.GeyserImpl;
-import org.slf4j.Logger;
-
 /**
  * This plugin checks if a player has a paid account and if so tries to skip offline mode authentication.
  */
@@ -82,7 +80,7 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
 
     public FastLoginBukkit() {
         this.logger = CommonUtil.initializeLoggerService(getLogger());
-        this.scheduler = new BukkitScheduler(this, logger, getThreadFactory());
+        this.scheduler = new BukkitScheduler(this, logger);
     }
 
     @Override
@@ -114,27 +112,12 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
             }
 
             if (pluginManager.isPluginEnabled("ProtocolSupport")) {
-                pluginManager.registerEvents(new ProtocolSupportListener(this, core.getRateLimiter()), this);
+                pluginManager.registerEvents(new ProtocolSupportListener(this, core.getAntiBot()), this);
             } else if (pluginManager.isPluginEnabled("ProtocolLib")) {
-                ProtocolLibListener.register(this, core.getRateLimiter());
-
-                if (isPluginInstalled("floodgate")) {
-                    if (getConfig().getBoolean("floodgatePrefixWorkaround")){
-                        ManualNameChange.register(this, floodgateService);
-                        logger.info("Floodgate prefix injection workaround has been enabled.");
-                        logger.info("If you have problems joining the server, try disabling it in the configuration.");
-                    } else {
-                        logger.warn("We have detected that you are runnging FastLogin alongside Floodgate and ProtocolLib.");
-                        logger.warn("Currently there is an issue with FastLogin that prevents Floodgate name prefixes from showing up "
-                                + "when it is together used with ProtocolLib.");
-                        logger.warn("If you would like to use Floodgate name prefixes, you can enable an experimental workaround by changing "
-                                + "the value 'floodgatePrefixWorkaround' to true in config.yml.");
-                        logger.warn("For more information visit https://github.com/games647/FastLogin/issues/493");
-                    }
-                }
+                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 (!PaperLib.isPaper() && getConfig().getBoolean("forwardSkin")) {
+                if (!isPaper() && getConfig().getBoolean("forwardSkin")) {
                     pluginManager.registerEvents(new SkinApplyListener(this), this);
                 }
             } else {
@@ -150,7 +133,7 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         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 (PaperLib.isPaper()) {
+        if (isPaper()) {
             pluginManager.registerEvents(new PaperCacheListener(this), this);
         }
 
@@ -162,8 +145,6 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
             premiumPlaceholder = new PremiumPlaceholder(this);
             premiumPlaceholder.register();
         }
-
-        dependencyWarnings();
     }
 
     private boolean initializeFloodgate() {
@@ -202,6 +183,10 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
                 logger.error("Failed to unregister placeholder", exception);
             }
         }
+
+        if (getServer().getPluginManager().isPluginEnabled("ProtocolLib")) {
+            ProtocolLibrary.getProtocolManager().getAsynchronousManager().unregisterAsyncHandlers(this);
+        }
     }
 
     public FastLoginCore<Player, CommandSender, FastLoginBukkit> getCore() {
@@ -243,12 +228,28 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
 
     /**
      * 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
      * us the status message yet (This means you cannot check the login status on the PlayerJoinEvent).
      */
-    public PremiumStatus getStatus(UUID onlinePlayer) {
+    public @NotNull PremiumStatus getStatus(@NotNull UUID onlinePlayer) {
         return premiumPlayers.getOrDefault(onlinePlayer, PremiumStatus.UNKNOWN);
     }
 
@@ -290,16 +291,17 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         receiver.sendMessage(message);
     }
 
-	/**
-	 * Checks if a plugin is installed on the server
-	 * @param name the name of the plugin
-	 * @return true if the plugin is installed
-	 */
-	@Override
-	public boolean isPluginInstalled(String name) {
-	    // the plugin may be enabled after FastLogin, so isPluginEnabled() won't work here
-	    return Bukkit.getServer().getPluginManager().getPlugin(name) != null;
-	}
+    /**
+     * Checks if a plugin is installed on the server
+     *
+     * @param name the name of the plugin
+     * @return true if the plugin is installed
+     */
+    @Override
+    public boolean isPluginInstalled(String name) {
+        // the plugin may be enabled after FastLogin, so isPluginEnabled() won't work here
+        return Bukkit.getServer().getPluginManager().getPlugin(name) != null;
+    }
 
     public FloodgateService getFloodgateService() {
         return floodgateService;
@@ -317,17 +319,16 @@ public class FastLoginBukkit extends JavaPlugin implements PlatformPlugin<Comman
         return geyserService;
     }
 
-    /**
-     * Send warning messages to log if incompatible plugins are used
-     */
-    private void dependencyWarnings() {
-        if (isPluginInstalled("floodgate-bukkit")) {
-            logger.warn("We have detected that you are running Floodgate 1.0 which is not supported by the Bukkit "
-                    + "version of FastLogin.");
-            logger.warn("If you would like to use FastLogin with Floodgate, you can download development builds of "
-                    + "Floodgate 2.0 from https://ci.opencollab.dev/job/GeyserMC/job/Floodgate/job/dev%252F2.0/");
-            logger.warn("Don't forget to update Geyser to a supported version as well from "
-                    + "https://ci.opencollab.dev/job/GeyserMC/job/Geyser/job/floodgate-2.0/");
-    	}
+    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/InetUtils.java

@@ -0,0 +1,63 @@
+/*
+ * 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;
+
+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/PremiumPlaceholder.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,10 +26,12 @@
 package com.github.games647.fastlogin.bukkit;
 
 import me.clip.placeholderapi.expansion.PlaceholderExpansion;
-
 import org.bukkit.OfflinePlayer;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Collections;
+import java.util.List;
+
 public class PremiumPlaceholder extends PlaceholderExpansion {
 
     private static final String PLACEHOLDER_VARIABLE = "status";
@@ -40,6 +42,16 @@ public class PremiumPlaceholder extends PlaceholderExpansion {
         this.plugin = plugin;
     }
 
+    @Override
+    public boolean persist() {
+        return true;
+    }
+
+    @Override
+    public @NotNull List<String> getPlaceholders() {
+        return Collections.singletonList(PLACEHOLDER_VARIABLE);
+    }
+
     @Override
     public String onRequest(OfflinePlayer player, @NotNull String identifier) {
         // player is null if offline

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,8 +27,7 @@ package com.github.games647.fastlogin.bukkit.command;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.bukkit.event.BukkitFastLoginPremiumToggleEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.jetbrains.annotations.NotNull;
@@ -42,9 +41,10 @@ public class CrackedCommand extends ToggleCommand {
     }
 
     @Override
-    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label,
+                             String[] args) {
         if (args.length == 0) {
-            onCrackedSelf(sender, command, args);
+            onCrackedSelf(sender);
         } else {
             onCrackedOther(sender, command, args);
         }
@@ -52,7 +52,7 @@ public class CrackedCommand extends ToggleCommand {
         return true;
     }
 
-    private void onCrackedSelf(CommandSender sender, Command cmd, String[] args) {
+    private void onCrackedSelf(CommandSender sender) {
         if (isConsole(sender)) {
             return;
         }
@@ -61,25 +61,20 @@ public class CrackedCommand extends ToggleCommand {
             return;
         }
 
-        if (plugin.getBungeeManager().isEnabled()) {
-            sendBungeeActivateMessage(sender, sender.getName(), false);
-            plugin.getCore().sendLocaleMessage("wait-on-proxy", sender);
-        } else {
-            //todo: load async if
-            StoredProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
-            if (profile.isPremium()) {
-                plugin.getCore().sendLocaleMessage("remove-premium", sender);
+        // todo: load async if
+        StoredProfile profile = plugin.getCore().getStorage().loadProfile(sender.getName());
+        if (profile.isPremium()) {
+            plugin.getCore().sendLocaleMessage("remove-premium", sender);
 
-                profile.setPremium(false);
-                profile.setId(null);
-                plugin.getScheduler().runAsync(() -> {
-                    plugin.getCore().getStorage().save(profile);
-                    plugin.getServer().getPluginManager().callEvent(
-                            new BukkitFastLoginPremiumToggleEvent(profile, PremiumToggleReason.COMMAND_OTHER));
-                });
-            } else {
-                plugin.getCore().sendLocaleMessage("not-premium", sender);
-            }
+            profile.setPremium(false);
+            profile.setId(null);
+            plugin.getScheduler().runAsync(() -> {
+                plugin.getCore().getStorage().save(profile);
+                plugin.getServer().getPluginManager().callEvent(
+                        new BukkitFastLoginPremiumToggleEvent(profile, PremiumToggleReason.COMMAND_OTHER));
+            });
+        } else {
+            plugin.getCore().sendLocaleMessage("not-premium", sender);
         }
     }
 

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,16 +27,15 @@ package com.github.games647.fastlogin.bukkit.command;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.bukkit.event.BukkitFastLoginPremiumToggleEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPremiumToggleEvent.PremiumToggleReason;
-
-import java.util.UUID;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.UUID;
+
 /**
  * Let users activate fast login by command. This only be accessible if
  * the user has access to its account. So we can make sure that not another
@@ -49,9 +48,10 @@ public class PremiumCommand extends ToggleCommand {
     }
 
     @Override
-    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label,
+                             String[] args) {
         if (args.length == 0) {
-            onPremiumSelf(sender, command, args);
+            onPremiumSelf(sender);
         } else {
             onPremiumOther(sender, command, args);
         }
@@ -59,7 +59,7 @@ public class PremiumCommand extends ToggleCommand {
         return true;
     }
 
-    private void onPremiumSelf(CommandSender sender, Command cmd, String[] args) {
+    private void onPremiumSelf(CommandSender sender) {
         if (isConsole(sender)) {
             return;
         }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -28,9 +28,6 @@ package com.github.games647.fastlogin.bukkit.command;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.core.message.ChangePremiumMessage;
 import com.github.games647.fastlogin.core.message.ChannelMessage;
-
-import java.util.Optional;
-
 import org.bukkit.Bukkit;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
@@ -38,6 +35,8 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.messaging.PluginMessageRecipient;
 
+import java.util.Optional;
+
 public abstract class ToggleCommand implements CommandExecutor {
 
     protected final FastLoginBukkit plugin;

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,9 +25,9 @@
  */
 package com.github.games647.fastlogin.bukkit.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.LoginSession;
 import com.github.games647.fastlogin.core.shared.event.FastLoginAutoLoginEvent;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
@@ -35,7 +35,7 @@ import org.jetbrains.annotations.NotNull;
 
 public class BukkitFastLoginAutoLoginEvent extends Event implements FastLoginAutoLoginEvent, Cancellable {
 
-    private static final HandlerList handlers = new HandlerList();
+    private static final HandlerList HANDLERS = new HandlerList();
     private final LoginSession session;
     private final StoredProfile profile;
     private boolean cancelled;
@@ -69,10 +69,10 @@ public class BukkitFastLoginAutoLoginEvent extends Event implements FastLoginAut
 
     @Override
     public @NotNull HandlerList getHandlers() {
-        return handlers;
+        return HANDLERS;
     }
 
     public static HandlerList getHandlerList() {
-        return handlers;
+        return HANDLERS;
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,16 +25,16 @@
  */
 package com.github.games647.fastlogin.bukkit.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.LoginSource;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPreLoginEvent;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 public class BukkitFastLoginPreLoginEvent extends Event implements FastLoginPreLoginEvent {
 
-    private static final HandlerList handlers = new HandlerList();
+    private static final HandlerList HANDLERS = new HandlerList();
     private final String username;
     private final LoginSource source;
     private final StoredProfile profile;
@@ -64,10 +64,10 @@ public class BukkitFastLoginPreLoginEvent extends Event implements FastLoginPreL
 
     @Override
     public @NotNull HandlerList getHandlers() {
-        return handlers;
+        return HANDLERS;
     }
 
     public static HandlerList getHandlerList() {
-        return handlers;
+        return HANDLERS;
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,15 +25,15 @@
  */
 package com.github.games647.fastlogin.bukkit.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPremiumToggleEvent;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 public class BukkitFastLoginPremiumToggleEvent extends Event implements FastLoginPremiumToggleEvent {
 
-    private static final HandlerList handlers = new HandlerList();
+    private static final HandlerList HANDLERS = new HandlerList();
     private final StoredProfile profile;
     private final PremiumToggleReason reason;
 
@@ -55,10 +55,10 @@ public class BukkitFastLoginPremiumToggleEvent extends Event implements FastLogi
 
     @Override
     public @NotNull HandlerList getHandlers() {
-        return handlers;
+        return HANDLERS;
     }
 
     public static HandlerList getHandlerList() {
-        return handlers;
+        return HANDLERS;
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -41,13 +41,13 @@ import org.bukkit.event.Listener;
 import java.lang.reflect.Field;
 
 /**
- * GitHub: https://github.com/Xephi/AuthMeReloaded/
+ * GitHub: <a href="https://github.com/Xephi/AuthMeReloaded/">...</a>
  * <p>
  * Project page:
  * <p>
- * Bukkit: https://dev.bukkit.org/bukkit-plugins/authme-reloaded/
+ * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/authme-reloaded/">...</a>
  * <p>
- * Spigot: https://www.spigotmc.org/resources/authme-reloaded.6269/
+ * Spigot: <a href="https://www.spigotmc.org/resources/authme-reloaded.6269/">...</a>
  */
 public class AuthMeHook implements AuthPlugin<Player>, Listener {
 
@@ -60,7 +60,7 @@ public class AuthMeHook implements AuthPlugin<Player>, Listener {
         this.plugin = plugin;
         this.authmeAPI = AuthMeApi.getInstance();
 
-        if (plugin.getConfig().getBoolean("respectIpLimit", false)) {
+        if (plugin.getCore().getConfig().getBoolean("respectIpLimit", false)) {
             try {
                 Field managementField = this.authmeAPI.getClass().getDeclaredField("management");
                 managementField.setAccessible(true);
@@ -75,7 +75,7 @@ public class AuthMeHook implements AuthPlugin<Player>, Listener {
     public void onSessionRestore(RestoreSessionEvent restoreSessionEvent) {
         Player player = restoreSessionEvent.getPlayer();
 
-        BukkitLoginSession session = plugin.getSession(player.getAddress());
+        BukkitLoginSession session = plugin.getSession(player.spigot().getRawAddress());
         if (session != null && session.isVerified()) {
             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) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,29 +25,28 @@
  */
 package com.github.games647.fastlogin.bukkit.hook;
 
-import com.comphenix.protocol.reflect.FieldUtils;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.FieldAccessor;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
 import de.st_ddt.crazylogin.CrazyLogin;
 import de.st_ddt.crazylogin.data.LoginPlayerData;
 import de.st_ddt.crazylogin.databases.CrazyLoginDataDatabase;
 import de.st_ddt.crazylogin.listener.PlayerListener;
 import de.st_ddt.crazylogin.metadata.Authenticated;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 
 import java.util.Optional;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-
 /**
- * GitHub: https://github.com/ST-DDT/CrazyLogin
+ * GitHub: <a href="https://github.com/ST-DDT/CrazyLogin">...</a>
  * <p>
  * Project page:
  * <p>
- * Bukkit: https://dev.bukkit.org/server-mods/crazylogin/
+ * Bukkit: <a href="https://dev.bukkit.org/server-mods/crazylogin/">...</a>
  */
 public class CrazyLoginHook implements AuthPlugin<Player> {
 
@@ -134,15 +133,8 @@ public class CrazyLoginHook implements AuthPlugin<Player> {
         return false;
     }
 
-    private PlayerListener getListener() {
-        PlayerListener listener;
-        try {
-            listener = (PlayerListener) FieldUtils.readField(crazyLoginPlugin, "playerListener", true);
-        } catch (IllegalAccessException ex) {
-            plugin.getLog().error("Failed to get the listener instance for auto login", ex);
-            listener = null;
-        }
-
-        return listener;
+    protected PlayerListener getListener() {
+        FieldAccessor accessor = Accessors.getFieldAccessor(crazyLoginPlugin.getClass(), PlayerListener.class, true);
+        return (PlayerListener) accessor.get(crazyLoginPlugin);
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,18 +27,16 @@ package com.github.games647.fastlogin.bukkit.hook;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
 import io.github.lucaseasedup.logit.CancelledState;
 import io.github.lucaseasedup.logit.LogItCore;
 import io.github.lucaseasedup.logit.account.Account;
 import io.github.lucaseasedup.logit.session.SessionManager;
+import org.bukkit.entity.Player;
 
 import java.time.Instant;
 
-import org.bukkit.entity.Player;
-
 /**
- * GitHub: https://github.com/XziomekX/LogIt
+ * GitHub: <a href="https://github.com/XziomekX/LogIt">...</a>
  * <p>
  * Project page:
  * <p>

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -32,17 +32,16 @@ import com.lenis0012.bukkit.loginsecurity.session.AuthService;
 import com.lenis0012.bukkit.loginsecurity.session.PlayerSession;
 import com.lenis0012.bukkit.loginsecurity.session.action.LoginAction;
 import com.lenis0012.bukkit.loginsecurity.session.action.RegisterAction;
-
 import org.bukkit.entity.Player;
 
 /**
- * GitHub: https://github.com/lenis0012/LoginSecurity-2
+ * GitHub: <a href="https://github.com/lenis0012/LoginSecurity-2">...</a>
  * <p>
  * Project page:
  * <p>
- * Bukkit: https://dev.bukkit.org/bukkit-plugins/loginsecurity/
+ * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/loginsecurity/">...</a>
  * <p>
- * Spigot: https://www.spigotmc.org/resources/loginsecurity.19362/
+ * Spigot: <a href="https://www.spigotmc.org/resources/loginsecurity.19362/">...</a>
  */
 public class LoginSecurityHook implements AuthPlugin<Player> {
 

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

@@ -1,78 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2021 <Your name 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.hook;
-
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-import org.bukkit.entity.Player;
-import red.mohist.sodionauth.bukkit.implementation.BukkitPlayer;
-import red.mohist.sodionauth.core.SodionAuthApi;
-import red.mohist.sodionauth.core.exception.AuthenticatedException;
-
-/**
- * GitHub: https://github.com/Mohist-Community/SodionAuth
- * <p>
- * Project page: https://gitea.e-loli.com/SodionAuth/SodionAuth
- * <p>
- * Bukkit: Unknown
- * <p>
- * Spigot: https://www.spigotmc.org/resources/sodionauth.76944/
- */
-public class SodionAuthHook implements AuthPlugin<Player> {
-
-    private final FastLoginBukkit plugin;
-
-    public SodionAuthHook(FastLoginBukkit plugin) {
-        this.plugin = plugin;
-    }
-
-    @Override
-    public boolean forceLogin(Player player) {
-        try {
-            SodionAuthApi.login(new BukkitPlayer(player));
-        } catch (AuthenticatedException e) {
-            plugin.getLog().warn(ALREADY_AUTHENTICATED, player);
-            return false;
-        }
-        return true;
-    }
-
-    @Override
-    public boolean forceRegister(Player player, String password) {
-        try{
-            return SodionAuthApi.register(new BukkitPlayer(player), password);
-        } catch (UnsupportedOperationException e){
-            plugin.getLog().warn("Currently SodionAuth is not accepting forceRegister, " +
-                    "It may be caused by unsupported AuthBackend");
-            return false;
-        }
-    }
-
-    @Override
-    public boolean isRegistered(String playerName) {
-        return SodionAuthApi.isRegistered(playerName);
-    }
-}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,21 +27,20 @@ package com.github.games647.fastlogin.bukkit.hook;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Future;
-
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import ultraauth.api.UltraAuthAPI;
 import ultraauth.managers.PlayerManager;
 
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+
 /**
  * Project page:
  * <p>
- * Bukkit: https://dev.bukkit.org/bukkit-plugins/ultraauth-aa/
+ * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/ultraauth-aa/">...</a>
  * <p>
- * Spigot: https://www.spigotmc.org/resources/ultraauth.17044/
+ * Spigot: <a href="https://www.spigotmc.org/resources/ultraauth.17044/">...</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) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,29 +27,27 @@ package com.github.games647.fastlogin.bukkit.hook;
 
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
 import de.luricos.bukkit.xAuth.xAuth;
 import de.luricos.bukkit.xAuth.xAuthPlayer;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-
 /**
- * GitHub: https://github.com/LycanDevelopment/xAuth/
+ * GitHub: <a href="https://github.com/LycanDevelopment/xAuth/">...</a>
  * <p>
  * Project page:
  * <p>
- * Bukkit: https://dev.bukkit.org/bukkit-plugins/xauth/
+ * Bukkit: <a href="https://dev.bukkit.org/bukkit-plugins/xauth/">...</a>
  */
-public class xAuthHook implements AuthPlugin<Player> {
+public class XAuthHook implements AuthPlugin<Player> {
 
     private final xAuth xAuthPlugin = xAuth.getPlugin();
     private final FastLoginBukkit plugin;
 
-    public xAuthHook(FastLoginBukkit plugin) {
+    public XAuthHook(FastLoginBukkit plugin) {
         this.plugin = plugin;
     }
 

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/BungeeListener.java

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -34,18 +34,16 @@ import com.github.games647.fastlogin.core.message.LoginActionMessage;
 import com.github.games647.fastlogin.core.message.LoginActionMessage.Type;
 import com.google.common.io.ByteArrayDataInput;
 import com.google.common.io.ByteStreams;
-
-import java.net.InetSocketAddress;
-import java.util.UUID;
-
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.plugin.messaging.PluginMessageListener;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.UUID;
+
 /**
  * Responsible for receiving messages from a BungeeCord instance.
- *
+ * <p>
  * 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.
  */
@@ -93,24 +91,23 @@ public class BungeeListener implements PluginMessageListener {
         String playerName = message.getPlayerName();
         Type type = message.getType();
 
-        InetSocketAddress address = player.getAddress();
         plugin.getLog().info("Player info {} command for {} from proxy", type, playerName);
         if (type == Type.LOGIN) {
-            onLoginMessage(player, playerName, address);
+            onLoginMessage(player, playerName);
         } else if (type == Type.REGISTER) {
-            onRegisterMessage(player, playerName, address);
+            onRegisterMessage(player, playerName);
         } else if (type == Type.CRACKED) {
             //we don't start a force login task here so update it manually
             plugin.getPremiumPlayers().put(player.getUniqueId(), PremiumStatus.CRACKED);
         }
     }
 
-    private void onLoginMessage(Player player, String playerName, InetSocketAddress address) {
+    private void onLoginMessage(Player player, String playerName) {
         BukkitLoginSession playerSession = new BukkitLoginSession(playerName, true);
         startLoginTaskIfReady(player, playerSession);
     }
 
-    private void onRegisterMessage(Player player, String playerName, InetSocketAddress address) {
+    private void onRegisterMessage(Player player, String playerName) {
         Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
             AuthPlugin<Player> authPlugin = plugin.getCore().getAuthPluginHook();
             try {
@@ -127,7 +124,7 @@ public class BungeeListener implements PluginMessageListener {
 
     private void startLoginTaskIfReady(Player player, BukkitLoginSession session) {
         session.setVerified(true);
-        plugin.putSession(player.getAddress(), session);
+        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);

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -30,7 +30,6 @@ 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;
@@ -80,7 +79,7 @@ public class ConnectionListener implements Listener {
         // 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.getAddress());
+        BukkitLoginSession session = plugin.getSession(player.spigot().getRawAddress());
 
         if (session == null) {
             // Floodgate players usually don't have a session at this point
@@ -95,8 +94,10 @@ public class ConnectionListener implements Listener {
                 }
             }
 
-            String sessionId = plugin.getSessionId(player.getAddress());
-            plugin.getLog().info("No on-going login session for player: {} with ID {}", player, sessionId);
+            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);

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,34 +25,71 @@
  */
 package com.github.games647.fastlogin.bukkit.listener.protocollib;
 
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.google.common.hash.Hasher;
+import com.google.common.hash.Hashing;
+import com.google.common.io.Resources;
+import com.google.common.primitives.Longs;
+import lombok.val;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.IOException;
 import java.math.BigInteger;
+import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
-import java.security.GeneralSecurityException;
+import java.security.InvalidKeyException;
+import java.security.KeyFactory;
 import java.security.KeyPair;
 import java.security.KeyPairGenerator;
-import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.security.PrivateKey;
 import java.security.PublicKey;
+import java.security.Signature;
+import java.security.SignatureException;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.X509EncodedKeySpec;
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.Base64;
+import java.util.Base64.Encoder;
 import java.util.Random;
-
-import javax.crypto.Cipher;
-import javax.crypto.SecretKey;
-import javax.crypto.spec.SecretKeySpec;
+import java.util.UUID;
 
 /**
  * Encryption and decryption minecraft util for connection between servers
  * and paid Minecraft account clients.
- *
- * @see net.minecraft.server.MinecraftEncryption
  */
-public class EncryptionUtil {
+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 = 2_048;
+
+    private static final PublicKey MOJANG_SESSION_KEY;
+    private static final int LINE_LENGTH = 76;
+    private static final Encoder KEY_ENCODER = Base64.getMimeEncoder(
+            LINE_LENGTH, "\n".getBytes(StandardCharsets.UTF_8)
+    );
+    private static final int MILLISECOND_SIZE = 8;
+    private static final int UUID_SIZE = 2 * MILLISECOND_SIZE;
+
+    static {
+        try {
+            MOJANG_SESSION_KEY = loadMojangSessionKey();
+        } catch (IOException | NoSuchAlgorithmException | InvalidKeySpecException ex) {
+            throw new RuntimeException("Failed to load Mojang session key", ex);
+        }
+    }
+
     private EncryptionUtil() {
-        // utility
+        throw new RuntimeException("No instantiation of utility classes allowed");
     }
 
     /**
@@ -61,11 +98,10 @@ public class EncryptionUtil {
      * @return The RSA key pair.
      */
     public static KeyPair generateKeyPair() {
-        // KeyPair b()
         try {
             KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_PAIR_ALGORITHM);
 
-            keyPairGenerator.initialize(1_024);
+            keyPairGenerator.initialize(RSA_LENGTH);
             return keyPairGenerator.generateKeyPair();
         } catch (NoSuchAlgorithmException nosuchalgorithmexception) {
             // Should be existing in every vm
@@ -78,10 +114,9 @@ public class EncryptionUtil {
      * in a login session.
      *
      * @param random random generator
-     * @return an error with 4 bytes long
+     * @return a token with 4 bytes long
      */
     public static byte[] generateVerifyToken(Random random) {
-        // extracted from LoginListener
         byte[] token = new byte[VERIFY_TOKEN_LENGTH];
         random.nextBytes(token);
         return token;
@@ -90,68 +125,102 @@ public class EncryptionUtil {
     /**
      * Generate the server id based on client and server data.
      *
-     * @param sessionId session for the current login attempt
+     * @param serverId     session for the current login attempt
      * @param sharedSecret shared secret between the client and the server
-     * @param publicKey public key of the server
+     * @param publicKey    public key of the server
      * @return the server id formatted as a hexadecimal string.
      */
-    public static String getServerIdHashString(String sessionId, SecretKey sharedSecret, PublicKey publicKey) {
-        // found in LoginListener
-        try {
-            byte[] serverHash = getServerIdHash(sessionId, publicKey, sharedSecret);
-            return (new BigInteger(serverHash)).toString(16);
-        } catch (NoSuchAlgorithmException e) {
-            e.printStackTrace();
-        }
-
-        return "";
+    public static String getServerIdHashString(String serverId, SecretKey sharedSecret, PublicKey publicKey) {
+        byte[] serverHash = getServerIdHash(serverId, publicKey, sharedSecret);
+        return (new BigInteger(serverHash)).toString(16);
     }
 
     /**
      * Decrypts the content and extracts the key spec.
      *
      * @param privateKey private server key
-     * @param sharedKey the encrypted shared key
+     * @param sharedKey  the encrypted shared key
      * @return shared secret key
-     * @throws GeneralSecurityException if it fails to decrypt the data
      */
-    public static SecretKey decryptSharedKey(PrivateKey privateKey, byte[] sharedKey) throws GeneralSecurityException {
-        // SecretKey a(PrivateKey var0, byte[] var1)
+    public static SecretKey decryptSharedKey(PrivateKey privateKey, byte[] sharedKey)
+            throws NoSuchPaddingException, IllegalBlockSizeException, NoSuchAlgorithmException,
+            BadPaddingException, InvalidKeyException {
         return new SecretKeySpec(decrypt(privateKey, sharedKey), "AES");
     }
 
-    public static byte[] decrypt(PrivateKey key, byte[] data) throws GeneralSecurityException {
-        // b(Key var0, byte[] var1)
-        Cipher cipher = Cipher.getInstance(key.getAlgorithm());
-        cipher.init(Cipher.DECRYPT_MODE, key);
-        return decrypt(cipher, data);
+    public static boolean verifyClientKey(ClientPublicKey clientKey, Instant verifyTimestamp, UUID premiumId)
+            throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+        if (clientKey.isExpired(verifyTimestamp)) {
+            return false;
+        }
+
+        Signature verifier = Signature.getInstance("SHA1withRSA");
+        // key of the signer
+        verifier.initVerify(MOJANG_SESSION_KEY);
+        verifier.update(toSignable(clientKey, premiumId));
+        return verifier.verify(clientKey.signature());
     }
 
-    /**
-     * Decrypted the given data using the cipher.
-     *
-     * @param cipher decryption cypher initialized with the private key
-     * @param data the encrypted data
-     * @return clear text data
-     * @throws GeneralSecurityException if it fails to decrypt the data
-     */
-    private static byte[] decrypt(Cipher cipher, byte[] data) throws GeneralSecurityException {
-        // inlined: byte[] a(int var0, Key var1, byte[] var2), Cipher a(int var0, String var1, Key
-        // var2)
+    private static byte[] toSignable(ClientPublicKey clientPublicKey, UUID ownerPremiumId) {
+        if (ownerPremiumId == null) {
+            long expiry = clientPublicKey.expiry().toEpochMilli();
+            String encoded = KEY_ENCODER.encodeToString(clientPublicKey.key().getEncoded());
+            return (expiry + "-----BEGIN RSA PUBLIC KEY-----\n" + encoded + "\n-----END RSA PUBLIC KEY-----\n")
+                    .getBytes(StandardCharsets.US_ASCII);
+        }
+
+        byte[] keyData = clientPublicKey.key().getEncoded();
+        return ByteBuffer.allocate(keyData.length + UUID_SIZE + MILLISECOND_SIZE)
+                .putLong(ownerPremiumId.getMostSignificantBits())
+                .putLong(ownerPremiumId.getLeastSignificantBits())
+                .putLong(clientPublicKey.expiry().toEpochMilli())
+                .put(keyData)
+                .array();
+    }
+
+    public static boolean verifyNonce(byte[] expected, PrivateKey decryptionKey, byte[] encryptedNonce)
+            throws NoSuchPaddingException, IllegalBlockSizeException, NoSuchAlgorithmException,
+            BadPaddingException, InvalidKeyException {
+        byte[] decryptedNonce = decrypt(decryptionKey, encryptedNonce);
+        return Arrays.equals(expected, decryptedNonce);
+    }
+
+    public static boolean verifySignedNonce(byte[] nonce, PublicKey clientKey, long signatureSalt, byte[] signature)
+            throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+        Signature verifier = Signature.getInstance("SHA256withRSA");
+        // key of the signer
+        verifier.initVerify(clientKey);
+
+        verifier.update(nonce);
+        verifier.update(Longs.toByteArray(signatureSalt));
+        return verifier.verify(signature);
+    }
+
+    private static PublicKey loadMojangSessionKey()
+            throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
+        val keyUrl = FastLoginBukkit.class.getClassLoader().getResource("yggdrasil_session_pubkey.der");
+        val keyData = Resources.toByteArray(keyUrl);
+        val keySpec = new X509EncodedKeySpec(keyData);
+
+        return KeyFactory.getInstance("RSA").generatePublic(keySpec);
+    }
+
+    private static byte[] decrypt(PrivateKey key, byte[] data)
+            throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException {
+        Cipher cipher = Cipher.getInstance(key.getAlgorithm());
+        cipher.init(Cipher.DECRYPT_MODE, key);
         return cipher.doFinal(data);
     }
 
-    private static byte[] getServerIdHash(
-            String sessionId, PublicKey publicKey, SecretKey sharedSecret)
-            throws NoSuchAlgorithmException {
-        // byte[] a(String var0, PublicKey var1, SecretKey var2)
-        MessageDigest digest = MessageDigest.getInstance("SHA-1");
+    private static byte[] getServerIdHash(String sessionId, PublicKey publicKey, SecretKey sharedSecret) {
+        @SuppressWarnings("deprecation")
+        Hasher hasher = Hashing.sha1().newHasher();
 
-        // inlined from byte[] a(String var0, byte[]... var1)
-        digest.update(sessionId.getBytes(StandardCharsets.ISO_8859_1));
-        digest.update(sharedSecret.getEncoded());
-        digest.update(publicKey.getEncoded());
+        hasher.putBytes(sessionId.getBytes(StandardCharsets.ISO_8859_1));
+        hasher.putBytes(sharedSecret.getEncoded());
+        hasher.putBytes(publicKey.getEncoded());
 
-        return digest.digest();
+        return hasher.hash().asBytes();
     }
 }

bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/ManualNameChange.java

@@ -1,85 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2021 <Your name 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.protocollib;
-
-import com.comphenix.protocol.events.PacketAdapter;
-import com.comphenix.protocol.events.PacketContainer;
-import com.comphenix.protocol.events.PacketEvent;
-import com.comphenix.protocol.wrappers.WrappedGameProfile;
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
-
-import org.geysermc.floodgate.api.FloodgateApi;
-
-import static com.comphenix.protocol.PacketType.Login.Client.START;
-
-import com.comphenix.protocol.ProtocolLibrary;
-
-/**
- * Manually inject Floodgate player name prefixes.
- * <br>
- * This is used as a workaround, because Floodgate fails to inject
- * the prefixes when it's used together with ProtocolLib and FastLogin.
- * <br>
- * For more information visit: https://github.com/games647/FastLogin/issues/493
- */
-public class ManualNameChange extends PacketAdapter {
-
-    private final FloodgateService floodgate;
-
-    public ManualNameChange(FastLoginBukkit plugin, FloodgateService floodgate) {
-        super(params()
-                .plugin(plugin)
-                .types(START));
-
-        this.plugin = plugin;
-        this.floodgate = floodgate;
-    }
-
-    public static void register(FastLoginBukkit plugin, FloodgateService floodgate) {
-        // they will be created with a static builder, because otherwise it will throw a NoClassDefFoundError
-        ProtocolLibrary.getProtocolManager()
-                .getAsynchronousManager()
-                .registerAsyncHandler(new ManualNameChange(plugin, floodgate))
-                .start();
-    }
-
-    @Override
-    public void onPacketReceiving(PacketEvent packetEvent) {
-        PacketContainer packet = packetEvent.getPacket();
-        WrappedGameProfile originalProfile = packet.getGameProfiles().read(0);
-
-        if (floodgate.getBedrockPlayer(originalProfile.getName()) == null) {
-            //not a Floodgate player, no need to add a prefix
-            return;
-        }
-
-        packet.setMeta("original_name", originalProfile.getName());
-        String prefixedName = FloodgateApi.getInstance().getPlayerPrefix() + originalProfile.getName();
-        WrappedGameProfile updatedProfile = originalProfile.withName(prefixedName);
-        packet.getGameProfiles().write(0, updatedProfile);
-    }
-}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -30,22 +30,24 @@ 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.event.BukkitFastLoginPreLoginEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
+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;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
 
 import java.security.PublicKey;
 import java.util.Random;
 
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-
 public class NameCheckTask extends JoinManagement<Player, CommandSender, ProtocolLibLoginSource>
-        implements Runnable {
+    implements Runnable {
 
     private final FastLoginBukkit plugin;
     private final PacketEvent packetEvent;
-    private final PublicKey publicKey;
+
+    private final ClientPublicKey clientKey;
+    private final PublicKey serverKey;
 
     private final Random random;
 
@@ -53,12 +55,13 @@ public class NameCheckTask extends JoinManagement<Player, CommandSender, Protoco
     private final String username;
 
     public NameCheckTask(FastLoginBukkit plugin, Random random, Player player, PacketEvent packetEvent,
-                         String username, PublicKey publicKey) {
+                         String username, ClientPublicKey clientKey, PublicKey serverKey) {
         super(plugin.getCore(), plugin.getCore().getAuthPluginHook(), plugin.getBedrockService());
 
         this.plugin = plugin;
         this.packetEvent = packetEvent;
-        this.publicKey = publicKey;
+        this.clientKey = clientKey;
+        this.serverKey = serverKey;
         this.random = random;
         this.player = player;
         this.username = username;
@@ -67,7 +70,7 @@ public class NameCheckTask extends JoinManagement<Player, CommandSender, Protoco
     @Override
     public void run() {
         try {
-            super.onLogin(username, new ProtocolLibLoginSource(player, random, publicKey));
+            super.onLogin(username, new ProtocolLibLoginSource(player, random, serverKey, clientKey));
         } finally {
             ProtocolLibrary.getProtocolManager().getAsynchronousManager().signalPacketTransmission(packetEvent);
         }
@@ -84,8 +87,8 @@ public class NameCheckTask extends JoinManagement<Player, CommandSender, Protoco
     //Minecraft server implementation
     //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L161
     @Override
-    public void requestPremiumLogin(ProtocolLibLoginSource source, StoredProfile profile
-            , String username, boolean registered) {
+    public void requestPremiumLogin(ProtocolLibLoginSource source, StoredProfile profile,
+                                    String username, boolean registered) {
         try {
             source.enableOnlinemode();
         } catch (Exception ex) {
@@ -97,8 +100,9 @@ public class NameCheckTask extends JoinManagement<Player, CommandSender, Protoco
         core.getPendingLogin().put(ip + username, new Object());
 
         byte[] verify = source.getVerifyToken();
+        ClientPublicKey clientKey = source.getClientKey();
 
-        BukkitLoginSession playerSession = new BukkitLoginSession(username, verify, registered, profile);
+        BukkitLoginSession playerSession = new BukkitLoginSession(username, verify, clientKey, registered, profile);
         plugin.putSession(player.getAddress(), playerSession);
         //cancel only if the player has a paid account otherwise login as normal offline player
         synchronized (packetEvent.getAsyncMarker().getProcessingLock()) {

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -30,29 +30,59 @@ import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.events.PacketAdapter;
 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.FuzzyReflection;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.FieldAccessor;
+import com.comphenix.protocol.utility.MinecraftVersion;
+import com.comphenix.protocol.wrappers.BukkitConverters;
+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.core.RateLimiter;
-
-import java.security.KeyPair;
-import java.security.SecureRandom;
-
+import com.github.games647.fastlogin.bukkit.listener.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;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandler;
+import io.netty.util.AttributeKey;
+import lombok.val;
 import org.bukkit.entity.Player;
+import org.geysermc.floodgate.api.player.FloodgatePlayer;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import java.net.InetSocketAddress;
+import java.security.InvalidKeyException;
+import java.security.KeyPair;
+import java.security.NoSuchAlgorithmException;
+import java.security.PublicKey;
+import java.security.SecureRandom;
+import java.security.SignatureException;
+import java.time.Instant;
+import java.util.Optional;
+import java.util.UUID;
+import java.util.function.Function;
 
 import static com.comphenix.protocol.PacketType.Login.Client.ENCRYPTION_BEGIN;
 import static com.comphenix.protocol.PacketType.Login.Client.START;
 
 public class ProtocolLibListener extends PacketAdapter {
 
-    public static final String SOURCE_META_KEY = "source";
-
     private final FastLoginBukkit plugin;
+    private final PlayerInjectionHandler handler;
 
     //just create a new once on plugin enable. This used for verify token generation
     private final SecureRandom random = new SecureRandom();
     private final KeyPair keyPair = EncryptionUtil.generateKeyPair();
-    private final RateLimiter rateLimiter;
+    private final AntiBotService antiBotService;
 
-    public ProtocolLibListener(FastLoginBukkit plugin, RateLimiter rateLimiter) {
+    private final boolean verifyClientKeys;
+
+    public ProtocolLibListener(FastLoginBukkit plugin, AntiBotService antiBotService, boolean verifyClientKeys) {
         //run async in order to not block the server, because we are making api calls to Mojang
         super(params()
                 .plugin(plugin)
@@ -60,15 +90,17 @@ public class ProtocolLibListener extends PacketAdapter {
                 .optionAsync());
 
         this.plugin = plugin;
-        this.rateLimiter = rateLimiter;
+        this.antiBotService = antiBotService;
+        this.verifyClientKeys = verifyClientKeys;
+        this.handler = getHandler();
     }
 
-    public static void register(FastLoginBukkit plugin, RateLimiter rateLimiter) {
+    public static void register(FastLoginBukkit plugin, AntiBotService antiBotService, boolean verifyClientKeys) {
         // they will be created with a static builder, because otherwise it will throw a NoClassDefFoundError
         // TODO: make synchronous processing, but do web or database requests async
         ProtocolLibrary.getProtocolManager()
                 .getAsynchronousManager()
-                .registerAsyncHandler(new ProtocolLibListener(plugin, rateLimiter))
+                .registerAsyncHandler(new ProtocolLibListener(plugin, antiBotService, verifyClientKeys))
                 .start();
     }
 
@@ -80,60 +112,218 @@ public class ProtocolLibListener extends PacketAdapter {
             return;
         }
 
-        if (isFastLoginPacket(packetEvent)) {
-            // this is our own packet
-            return;
-        }
+        plugin.getLog().info("New packet {} from {}", packetEvent.getPacketType(), packetEvent.getPlayer());
 
         Player sender = packetEvent.getPlayer();
         PacketType packetType = packetEvent.getPacketType();
         if (packetType == START) {
-            if (!rateLimiter.tryAcquire()) {
-                plugin.getLog().warn("Simple Anti-Bot join limit - Ignoring {}", sender);
-                return;
+
+            if (plugin.getFloodgateService() != null) {
+                boolean success = processFloodgateTasks(packetEvent);
+                // don't continue execution if the player was kicked by Floodgate
+                if (!success) {
+                    return;
+                }
             }
 
-            onLogin(packetEvent, sender);
+            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);
         }
     }
 
-    private Boolean isFastLoginPacket(PacketEvent packetEvent) {
-        return packetEvent.getPacket().getMeta(SOURCE_META_KEY)
-                .map(val -> val.equals(plugin.getName()))
-                .orElse(false);
-    }
-
     private void onEncryptionBegin(PacketEvent packetEvent, Player sender) {
         byte[] sharedSecret = packetEvent.getPacket().getByteArrays().read(0);
 
-        packetEvent.getAsyncMarker().incrementProcessingDelay();
-        Runnable verifyTask = new VerifyResponseTask(plugin, packetEvent, sender, sharedSecret, keyPair);
-        plugin.getScheduler().runAsync(verifyTask);
+        BukkitLoginSession session = plugin.getSession(sender.getAddress());
+        if (session == null) {
+            plugin.getLog().warn("Profile {} tried to send encryption response at invalid state", sender.getAddress());
+            sender.kickPlayer(plugin.getCore().getMessage("invalid-request"));
+        } else {
+            byte[] expectedVerifyToken = session.getVerifyToken();
+            if (verifyNonce(sender, packetEvent.getPacket(), session.getClientPublicKey(), expectedVerifyToken)) {
+                packetEvent.getAsyncMarker().incrementProcessingDelay();
+
+                Runnable verifyTask = new VerifyResponseTask(
+                        plugin, packetEvent, sender, session, sharedSecret, keyPair
+                );
+                plugin.getScheduler().runAsync(verifyTask);
+            } else {
+                sender.kickPlayer(plugin.getCore().getMessage("invalid-verify-token"));
+            }
+        }
     }
 
-    private void onLogin(PacketEvent packetEvent, Player player) {
+    private boolean verifyNonce(Player sender, PacketContainer packet,
+                                ClientPublicKey clientPublicKey, byte[] expectedToken) {
+        try {
+            if (new MinecraftVersion(1, 19, 0).atOrAbove()
+                    && !new MinecraftVersion(1, 19, 3).atOrAbove()) {
+                Either<byte[], ?> either = packet.getSpecificModifier(Either.class).read(0);
+                if (clientPublicKey == null) {
+                    Optional<byte[]> left = either.left();
+                    if (!left.isPresent()) {
+                        plugin.getLog().error("No verify token sent if requested without player signed key {}", sender);
+                        return false;
+                    }
+
+                    return EncryptionUtil.verifyNonce(expectedToken, keyPair.getPrivate(), left.get());
+                } else {
+                    Optional<?> optSignatureData = either.right();
+                    if (!optSignatureData.isPresent()) {
+                        plugin.getLog().error("No signature given to sent player signing key {}", sender);
+                        return false;
+                    }
+
+                    Object signatureData = optSignatureData.get();
+                    long salt = FuzzyReflection.getFieldValue(signatureData, Long.TYPE, true);
+                    byte[] signature = FuzzyReflection.getFieldValue(signatureData, byte[].class, true);
+
+                    PublicKey publicKey = clientPublicKey.key();
+                    return EncryptionUtil.verifySignedNonce(expectedToken, publicKey, salt, signature);
+                }
+            } else {
+                byte[] nonce = packet.getByteArrays().read(1);
+                return EncryptionUtil.verifyNonce(expectedToken, keyPair.getPrivate(), nonce);
+            }
+        } catch (NoSuchAlgorithmException | InvalidKeyException | SignatureException | NoSuchPaddingException
+                 | IllegalBlockSizeException | BadPaddingException signatureEx) {
+            plugin.getLog().error("Invalid signature from player {}", sender, signatureEx);
+            return false;
+        }
+    }
+
+    private void onLoginStart(PacketEvent packetEvent, Player player, String username) {
         //this includes ip:port. Should be unique for an incoming login request with a timeout of 2 minutes
         String sessionKey = player.getAddress().toString();
 
         //remove old data every time on a new login in order to keep the session only for one person
         plugin.removeSession(player.getAddress());
 
-        //player.getName() won't work at this state
         PacketContainer packet = packetEvent.getPacket();
+        Optional<ClientPublicKey> clientKey;
+        if (new MinecraftVersion(1, 19, 3).atOrAbove()) {
+            // public key sent separate
+            clientKey = Optional.empty();
+        } else {
+            val profileKey = packet.getOptionals(BukkitConverters.getWrappedPublicKeyDataConverter())
+                    .optionRead(0);
 
-        String username = packet.getGameProfiles().read(0).getName();
+            clientKey = profileKey.flatMap(Function.identity()).flatMap(data -> {
+                Instant expires = data.getExpireTime();
+                PublicKey key = data.getKey();
+                byte[] signature = data.getSignature();
+                return Optional.of(ClientPublicKey.of(expires, key, signature));
+            });
 
-        if (packetEvent.getPacket().getMeta("original_name").isPresent()) {
-            //username has been injected by ManualNameChange.java
-            username = (String) packetEvent.getPacket().getMeta("original_name").get();
+            // start reading from index 1, because 0 is already used by the public key
+            Optional<UUID> sessionUUID = packet.getOptionals(Converters.passthrough(UUID.class)).readSafely(1);
+            if (verifyClientKeys && sessionUUID.isPresent() && clientKey.isPresent()
+                    && verifyPublicKey(clientKey.get(), sessionUUID.get())) {
+                // missing or incorrect
+                // expired always not allowed
+                player.kickPlayer(plugin.getCore().getMessage("invalid-public-key"));
+                plugin.getLog().warn("Invalid public key from player {}", username);
+                return;
+            }
         }
 
+
         plugin.getLog().trace("GameProfile {} with {} connecting", sessionKey, username);
 
         packetEvent.getAsyncMarker().incrementProcessingDelay();
-        Runnable nameCheckTask = new NameCheckTask(plugin, random, player, packetEvent, username, keyPair.getPublic());
+        Runnable nameCheckTask = new NameCheckTask(
+                plugin, random, player, packetEvent, username, clientKey.orElse(null), keyPair.getPublic()
+        );
         plugin.getScheduler().runAsync(nameCheckTask);
     }
+
+    private boolean verifyPublicKey(ClientPublicKey clientKey, UUID sessionPremiumUUID) {
+        try {
+            return EncryptionUtil.verifyClientKey(clientKey, Instant.now(), sessionPremiumUUID);
+        } catch (SignatureException | InvalidKeyException | NoSuchAlgorithmException ex) {
+            return false;
+        }
+    }
+
+    private String getUsername(PacketContainer packet) {
+        WrappedGameProfile profile = packet.getGameProfiles().readSafely(0);
+        if (profile == null) {
+            return packet.getStrings().read(0);
+        }
+
+        //player.getName() won't work at this state
+        return profile.getName();
+    }
+
+    private static PlayerInjectionHandler getHandler() {
+        PacketFilterManager manager = (PacketFilterManager) ProtocolLibrary.getProtocolManager();
+        FieldAccessor accessor = Accessors.getFieldAccessor(manager.getClass(), PlayerInjectionHandler.class, true);
+        return (PlayerInjectionHandler) accessor.get(manager);
+    }
+
+    private FloodgatePlayer getFloodgatePlayer(Player player) {
+        Channel channel = handler.getChannel(player);
+        AttributeKey<FloodgatePlayer> floodgateAttribute = AttributeKey.valueOf("floodgate-player");
+        return channel.attr(floodgateAttribute).get();
+    }
+
+    /**
+     * Reimplementation of the tasks injected Floodgate in ProtocolLib that are not run due to a bug
+     * @see <a href="https://github.com/GeyserMC/Floodgate/issues/143">Issue Floodgate#143</a>
+     * @see <a href="https://github.com/GeyserMC/Floodgate/blob/5d5713ed9e9eeab0f4abdaa9cf5cd8619dc1909b/spigot/src/main/java/org/geysermc/floodgate/addon/data/SpigotDataHandler.java#L121-L175">Floodgate/SpigotDataHandler</a>
+     * @param packetEvent the PacketEvent that won't be processed by Floodgate
+     * @return false if the player was kicked
+     */
+    private boolean processFloodgateTasks(PacketEvent packetEvent) {
+        PacketContainer packet = packetEvent.getPacket();
+        Player player = packetEvent.getPlayer();
+        FloodgatePlayer floodgatePlayer = getFloodgatePlayer(player);
+        if (floodgatePlayer == null) {
+            return true;
+        }
+
+        // kick the player, if necessary
+        Channel channel = handler.getChannel(packetEvent.getPlayer());
+        AttributeKey<String> kickMessageAttribute = AttributeKey.valueOf("floodgate-kick-message");
+        String kickMessage = channel.attr(kickMessageAttribute).get();
+        if (kickMessage != null) {
+            player.kickPlayer(kickMessage);
+            return false;
+        }
+
+        // add prefix
+        String username = floodgatePlayer.getCorrectUsername();
+        if (packet.getGameProfiles().size() > 0) {
+            packet.getGameProfiles().write(0,
+                    new WrappedGameProfile(floodgatePlayer.getCorrectUniqueId(), username));
+        } else {
+            packet.getStrings().write(0, username);
+        }
+
+        // remove real Floodgate data handler
+        ChannelHandler floodgateHandler = channel.pipeline().get("floodgate_data_handler");
+        channel.pipeline().remove(floodgateHandler);
+
+        return true;
+    }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -30,16 +30,15 @@ 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.core.shared.LoginSource;
+import org.bukkit.entity.Player;
 
-import java.lang.reflect.InvocationTargetException;
 import java.net.InetSocketAddress;
 import java.security.PublicKey;
 import java.util.Arrays;
 import java.util.Random;
 
-import org.bukkit.entity.Player;
-
 import static com.comphenix.protocol.PacketType.Login.Server.DISCONNECT;
 import static com.comphenix.protocol.PacketType.Login.Server.ENCRYPTION_BEGIN;
 
@@ -48,19 +47,22 @@ class ProtocolLibLoginSource implements LoginSource {
     private final Player player;
 
     private final Random random;
+
+    private final ClientPublicKey clientKey;
     private final PublicKey publicKey;
 
     private final String serverId = "";
     private byte[] verifyToken;
 
-    public ProtocolLibLoginSource(Player player, Random random, PublicKey publicKey) {
+    ProtocolLibLoginSource(Player player, Random random, PublicKey serverPublicKey, ClientPublicKey clientKey) {
         this.player = player;
         this.random = random;
-        this.publicKey = publicKey;
+        this.publicKey = serverPublicKey;
+        this.clientKey = clientKey;
     }
 
     @Override
-    public void enableOnlinemode() throws InvocationTargetException {
+    public void enableOnlinemode() {
         verifyToken = EncryptionUtil.generateVerifyToken(random);
 
         /*
@@ -88,7 +90,7 @@ class ProtocolLibLoginSource implements LoginSource {
     }
 
     @Override
-    public void kick(String message) throws InvocationTargetException {
+    public void kick(String message) {
         ProtocolManager protocolManager = ProtocolLibrary.getProtocolManager();
 
         PacketContainer kickPacket = new PacketContainer(DISCONNECT);
@@ -109,6 +111,10 @@ class ProtocolLibLoginSource implements LoginSource {
         return player.getAddress();
     }
 
+    public ClientPublicKey getClientKey() {
+        return clientKey;
+    }
+
     public String getServerId() {
         return serverId;
     }
@@ -119,11 +125,11 @@ class ProtocolLibLoginSource implements LoginSource {
 
     @Override
     public String toString() {
-        return this.getClass().getSimpleName() + '{' +
-                "player=" + player +
-                ", random=" + random +
-                ", serverId='" + serverId + '\'' +
-                ", verifyToken=" + Arrays.toString(verifyToken) +
-                '}';
+        return this.getClass().getSimpleName() + '{'
+            + "player=" + player
+            + ", random=" + random
+            + ", serverId='" + serverId + '\''
+            + ", verifyToken=" + Arrays.toString(verifyToken)
+            + '}';
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,10 +25,6 @@
  */
 package com.github.games647.fastlogin.bukkit.listener.protocollib;
 
-import com.comphenix.protocol.reflect.MethodUtils;
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.MethodAccessor;
-import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.wrappers.WrappedGameProfile;
 import com.comphenix.protocol.wrappers.WrappedSignedProperty;
 import com.github.games647.craftapi.model.skin.Textures;
@@ -41,13 +37,8 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerLoginEvent;
 import org.bukkit.event.player.PlayerLoginEvent.Result;
 
-import java.lang.reflect.InvocationTargetException;
-
 public class SkinApplyListener implements Listener {
 
-    private static final Class<?> GAME_PROFILE = MinecraftReflection.getGameProfileClass();
-    private static final MethodAccessor GET_PROPERTIES = Accessors.getMethodAccessor(GAME_PROFILE, "getProperties");
-
     private final FastLoginBukkit plugin;
 
     public SkinApplyListener(FastLoginBukkit plugin) {
@@ -77,16 +68,6 @@ public class SkinApplyListener implements Listener {
         WrappedGameProfile gameProfile = WrappedGameProfile.fromPlayer(player);
 
         WrappedSignedProperty skin = WrappedSignedProperty.fromValues(Textures.KEY, skinData, signature);
-        try {
-            gameProfile.getProperties().put(Textures.KEY, skin);
-        } catch (ClassCastException castException) {
-            //Cauldron, MCPC, Thermos, ...
-            Object map = GET_PROPERTIES.invoke(gameProfile.getHandle());
-            try {
-                MethodUtils.invokeMethod(map, "put", new Object[]{Textures.KEY, skin.getHandle()});
-            } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
-                plugin.getLog().error("Error setting premium skin of: {}", player, ex);
-            }
-        }
+        gameProfile.getProperties().put(Textures.KEY, skin);
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -28,20 +28,33 @@ package com.github.games647.fastlogin.bukkit.listener.protocollib;
 import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
-import com.comphenix.protocol.injector.server.TemporaryPlayerFactory;
-import com.comphenix.protocol.reflect.FieldUtils;
+import com.comphenix.protocol.injector.packet.PacketRegistry;
+import com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory;
+import com.comphenix.protocol.reflect.EquivalentConverter;
 import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
+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;
 import com.github.games647.craftapi.model.auth.Verification;
 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.InetUtils;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import lombok.val;
+import org.bukkit.entity.Player;
 
+import javax.crypto.Cipher;
+import javax.crypto.SecretKey;
 import java.io.IOException;
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
@@ -53,11 +66,6 @@ import java.util.Arrays;
 import java.util.Optional;
 import java.util.UUID;
 
-import javax.crypto.Cipher;
-import javax.crypto.SecretKey;
-
-import org.bukkit.entity.Player;
-
 import static com.comphenix.protocol.PacketType.Login.Client.START;
 import static com.comphenix.protocol.PacketType.Login.Server.DISCONNECT;
 
@@ -65,9 +73,18 @@ public class VerifyResponseTask implements Runnable {
 
     private static final String ENCRYPTION_CLASS_NAME = "MinecraftEncryption";
     private static final Class<?> ENCRYPTION_CLASS;
+    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.";
 
     static {
-        ENCRYPTION_CLASS = MinecraftReflection.getMinecraftClass("util." + ENCRYPTION_CLASS_NAME, ENCRYPTION_CLASS_NAME);
+        ENCRYPTION_CLASS = MinecraftReflection.getMinecraftClass(
+                "util." + ENCRYPTION_CLASS_NAME, ENCRYPTION_CLASS_NAME
+        );
     }
 
     private final FastLoginBukkit plugin;
@@ -76,16 +93,20 @@ public class VerifyResponseTask implements Runnable {
 
     private final Player player;
 
+    private final BukkitLoginSession session;
+
     private final byte[] sharedSecret;
 
     private static Method encryptMethod;
     private static Method cipherMethod;
 
-    public VerifyResponseTask(FastLoginBukkit plugin, PacketEvent packetEvent, Player player,
+    public VerifyResponseTask(FastLoginBukkit plugin, PacketEvent packetEvent,
+                              Player player, BukkitLoginSession session,
                               byte[] sharedSecret, KeyPair keyPair) {
         this.plugin = plugin;
         this.packetEvent = packetEvent;
         this.player = player;
+        this.session = session;
         this.sharedSecret = Arrays.copyOf(sharedSecret, sharedSecret.length);
         this.serverKey = keyPair;
     }
@@ -93,13 +114,7 @@ public class VerifyResponseTask implements Runnable {
     @Override
     public void run() {
         try {
-            BukkitLoginSession session = plugin.getSession(player.getAddress());
-            if (session == null) {
-                disconnect("invalid-request", true
-                        , "GameProfile {0} tried to send encryption response at invalid state", player.getAddress());
-            } else {
-                verifyResponse(session);
-            }
+            verifyResponse(session);
         } finally {
             //this is a fake packet; it shouldn't be sent to the server
             synchronized (packetEvent.getAsyncMarker().getProcessingLock()) {
@@ -117,16 +132,16 @@ public class VerifyResponseTask implements Runnable {
         try {
             loginKey = EncryptionUtil.decryptSharedKey(privateKey, sharedSecret);
         } catch (GeneralSecurityException securityEx) {
-            disconnect("error-kick", false, "Cannot decrypt received contents", securityEx);
+            disconnect("error-kick", "Cannot decrypt received contents", securityEx);
             return;
         }
 
         try {
-            if (!checkVerifyToken(session) || !enableEncryption(loginKey)) {
+            if (!enableEncryption(loginKey)) {
                 return;
             }
         } catch (Exception ex) {
-            disconnect("error-kick", false, "Cannot decrypt received contents", ex);
+            disconnect("error-kick", "Cannot decrypt received contents", ex);
             return;
         }
 
@@ -139,77 +154,88 @@ public class VerifyResponseTask implements Runnable {
             InetAddress address = socketAddress.getAddress();
             Optional<Verification> response = resolver.hasJoined(requestedUsername, serverId, address);
             if (response.isPresent()) {
-                Verification verification = response.get();
-                plugin.getLog().info("Profile {} has a verified premium account", requestedUsername);
-                String realUsername = verification.getName();
-                if (realUsername == null) {
-                    disconnect("invalid-session", true, "Username field null for {}", requestedUsername);
-                    return;
-                }
-
-                SkinProperty[] properties = verification.getProperties();
-                if (properties.length > 0) {
-                    session.setSkinProperty(properties[0]);
-                }
-
-                session.setVerifiedUsername(realUsername);
-                session.setUuid(verification.getId());
-                session.setVerified(true);
-
-                setPremiumUUID(session.getUuid());
-                receiveFakeStartPacket(realUsername);
+                encryptConnection(session, requestedUsername, response.get());
             } else {
                 //user tried to fake an authentication
-                disconnect("invalid-session", true
-                        , "GameProfile {0} ({1}) tried to log in with an invalid session ServerId: {2}"
-                        , session.getRequestUsername(), socketAddress, serverId);
+                disconnect(
+                        "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
+                    );
+                    plugin.getLog().warn(ADDRESS_VERIFY_WARNING);
+                } 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", false, "Failed to connect to session server", ioEx);
+            disconnect("error-kick", "Failed to connect to session server", ioEx);
         }
     }
 
+    private void encryptConnection(BukkitLoginSession session, String requestedUsername, Verification verification) {
+        plugin.getLog().info("Profile {} has a verified premium account", requestedUsername);
+        String realUsername = verification.getName();
+        if (realUsername == null) {
+            disconnect("invalid-session", "Username field null for {}", requestedUsername);
+            return;
+        }
+
+        SkinProperty[] properties = verification.getProperties();
+        if (properties.length > 0) {
+            session.setSkinProperty(properties[0]);
+        }
+
+        session.setVerifiedUsername(realUsername);
+        session.setUuid(verification.getId());
+        session.setVerified(true);
+
+        setPremiumUUID(session.getUuid());
+        receiveFakeStartPacket(realUsername, session.getClientPublicKey(), session.getUuid());
+    }
+
     private void setPremiumUUID(UUID premiumUUID) {
         if (plugin.getConfig().getBoolean("premiumUuid") && premiumUUID != null) {
             try {
                 Object networkManager = getNetworkManager();
                 //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/NetworkManager.java#L69
-                FieldUtils.writeField(networkManager, "spoofedUUID", premiumUUID, true);
+
+                Class<?> managerClass = networkManager.getClass();
+                FieldAccessor accessor = Accessors.getFieldAccessorOrNull(managerClass, "spoofedUUID", UUID.class);
+                accessor.set(networkManager, premiumUUID);
             } catch (Exception exc) {
                 plugin.getLog().error("Error setting premium uuid of {}", player, exc);
             }
         }
     }
 
-    private boolean checkVerifyToken(BukkitLoginSession session) throws GeneralSecurityException {
-        byte[] requestVerify = session.getVerifyToken();
-        //encrypted verify token
-        byte[] responseVerify = packetEvent.getPacket().getByteArrays().read(1);
-
-        //https://github.com/bergerkiller/CraftSource/blob/master/net.minecraft.server/LoginListener.java#L182
-        if (!Arrays.equals(requestVerify, EncryptionUtil.decrypt(serverKey.getPrivate(), responseVerify))) {
-            //check if the verify-token are equal to the server sent one
-            disconnect("invalid-verify-token", true
-                    , "GameProfile {0} ({1}) tried to login with an invalid verify token. Server: {2} Client: {3}"
-                    , session.getRequestUsername(), packetEvent.getPlayer().getAddress(), requestVerify, responseVerify);
-            return false;
-        }
-
-        return true;
-    }
-
     //try to get the networkManager from ProtocolLib
-    private Object getNetworkManager() throws IllegalAccessException, ClassNotFoundException {
+    private Object getNetworkManager() throws ClassNotFoundException {
         Object injectorContainer = TemporaryPlayerFactory.getInjectorFromPlayer(player);
 
         // ChannelInjector
         Class<?> injectorClass = Class.forName("com.comphenix.protocol.injector.netty.Injector");
         Object rawInjector = FuzzyReflection.getFieldValue(injectorContainer, injectorClass, true);
-        return FieldUtils.readField(rawInjector, "networkManager", true);
+
+        Class<?> rawInjectorClass = rawInjector.getClass();
+        FieldAccessor accessor = Accessors.getFieldAccessorOrNull(rawInjectorClass, "networkManager", Object.class);
+        return accessor.get(rawInjector);
     }
 
     private boolean enableEncryption(SecretKey loginKey) throws IllegalArgumentException {
-        plugin.getLog().info("Enabling onlinemode encryption for {}", player.getName());
+        plugin.getLog().info("Enabling onlinemode encryption for {}", player.getAddress());
         // Initialize method reflections
         if (encryptMethod == null) {
             Class<?> networkManagerClass = MinecraftReflection.getNetworkManagerClass();
@@ -245,53 +271,60 @@ public class VerifyResponseTask implements Runnable {
                 encryptMethod.invoke(networkManager, decryptionCipher, encryptionCipher);
             }
         } catch (Exception ex) {
-            disconnect("error-kick", false, "Couldn't enable encryption", ex);
+            disconnect("error-kick", "Couldn't enable encryption", ex);
             return false;
         }
 
         return true;
     }
 
-    private void disconnect(String reasonKey, boolean debug, String logMessage, Object... arguments) {
-        if (debug) {
-            plugin.getLog().debug(logMessage, arguments);
-        } else {
-            plugin.getLog().error(logMessage, arguments);
-        }
-
+    private void disconnect(String reasonKey, String logMessage, Object... arguments) {
+        plugin.getLog().error(logMessage, arguments);
         kickPlayer(plugin.getCore().getMessage(reasonKey));
     }
 
     private void kickPlayer(String reason) {
         PacketContainer kickPacket = new PacketContainer(DISCONNECT);
         kickPacket.getChatComponents().write(0, WrappedChatComponent.fromText(reason));
-        try {
-            //send kick packet at login state
-            //the normal event.getPlayer.kickPlayer(String) method does only work at play state
-            ProtocolLibrary.getProtocolManager().sendServerPacket(player, kickPacket);
-            //tell the server that we want to close the connection
-            player.kickPlayer("Disconnect");
-        } catch (InvocationTargetException ex) {
-            plugin.getLog().error("Error sending kick packet for: {}", player, ex);
-        }
+        //send kick packet at login state
+        //the normal event.getPlayer.kickPlayer(String) method does only work at play state
+        ProtocolLibrary.getProtocolManager().sendServerPacket(player, kickPacket);
+        //tell the server that we want to close the connection
+        player.kickPlayer("Disconnect");
     }
 
     //fake a new login packet in order to let the server handle all the other stuff
-    private void receiveFakeStartPacket(String username) {
-        //see StartPacketListener for packet information
-        PacketContainer startPacket = new PacketContainer(START);
+    private void receiveFakeStartPacket(String username, ClientPublicKey clientKey, UUID uuid) {
+        PacketContainer startPacket;
+        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);
 
-        //uuid is ignored by the packet definition
-        WrappedGameProfile fakeProfile = new WrappedGameProfile(UUID.randomUUID(), username);
-        startPacket.getGameProfiles().write(0, fakeProfile);
-        try {
-            //we don't want to handle our own packets so ignore filters
-            startPacket.setMeta(ProtocolLibListener.SOURCE_META_KEY, plugin.getName());
-            ProtocolLibrary.getProtocolManager().recieveClientPacket(player, startPacket, true);
-        } catch (InvocationTargetException | IllegalAccessException ex) {
-            plugin.getLog().warn("Failed to fake a new start packet for: {}", username, ex);
-            //cancel the event in order to prevent the server receiving an invalid packet
-            kickPlayer(plugin.getCore().getMessage("error-kick"));
+            EquivalentConverter<WrappedProfileKeyData> converter = BukkitConverters.getWrappedPublicKeyDataConverter();
+            val wrappedKey = Optional.ofNullable(clientKey).map(key ->
+                    new WrappedProfileKeyData(clientKey.expiry(), clientKey.key(), clientKey.signature())
+            );
+
+            startPacket.getOptionals(converter).write(0, wrappedKey);
+        } else {
+            //uuid is ignored by the packet definition
+            WrappedGameProfile fakeProfile = new WrappedGameProfile(UUID.randomUUID(), username);
+
+            Class<?> profileHandleType = fakeProfile.getHandleType();
+            Class<?> packetHandleType = PacketRegistry.getPacketClassFromType(START);
+            ConstructorAccessor startCons = Accessors.getConstructorAccessorOrNull(packetHandleType, profileHandleType);
+            startPacket = new PacketContainer(START, startCons.invoke(fakeProfile.getHandle()));
         }
+
+        //we don't want to handle our own packets so ignore filters
+        ProtocolLibrary.getProtocolManager().receiveClientPacket(player, startPacket, false);
     }
 }

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

@@ -0,0 +1,55 @@
+/*
+ * 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.protocollib.packet;
+
+import lombok.Value;
+import lombok.experimental.Accessors;
+
+import java.security.PublicKey;
+import java.time.Instant;
+import java.util.Base64;
+import java.util.StringJoiner;
+
+@Accessors(fluent = true)
+@Value(staticConstructor = "of")
+public class ClientPublicKey {
+    Instant expiry;
+    PublicKey key;
+    byte[] signature;
+
+    public boolean isExpired(Instant verifyTimestamp) {
+        return !verifyTimestamp.isBefore(expiry);
+    }
+
+    @Override
+    public String toString() {
+        return new StringJoiner(", ", ClientPublicKey.class.getSimpleName() + '[', "]")
+                .add("expiry=" + expiry)
+                .add("key=" + Base64.getEncoder().encodeToString(key.getEncoded()))
+                .add("signature=" + Base64.getEncoder().encodeToString(signature))
+                .toString();
+    }
+}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,11 +26,10 @@
 package com.github.games647.fastlogin.bukkit.listener.protocolsupport;
 
 import com.github.games647.fastlogin.core.shared.LoginSource;
+import protocolsupport.api.events.PlayerLoginStartEvent;
 
 import java.net.InetSocketAddress;
 
-import protocolsupport.api.events.PlayerLoginStartEvent;
-
 public class ProtocolLoginSource implements LoginSource {
 
     private final PlayerLoginStartEvent loginStartEvent;
@@ -51,7 +50,7 @@ public class ProtocolLoginSource implements LoginSource {
 
     @Override
     public InetSocketAddress getAddress() {
-        return loginStartEvent.getAddress();
+        return loginStartEvent.getConnection().getRawAddress();
     }
 
     public PlayerLoginStartEvent getLoginStartEvent() {
@@ -60,8 +59,8 @@ public class ProtocolLoginSource implements LoginSource {
 
     @Override
     public String toString() {
-        return this.getClass().getSimpleName() + '{' +
-                "loginStartEvent=" + loginStartEvent +
-                '}';
+        return this.getClass().getSimpleName() + '{'
+            + "loginStartEvent=" + loginStartEvent
+            + '}';
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -29,14 +29,11 @@ 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.RateLimiter;
-import com.github.games647.fastlogin.core.StoredProfile;
+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 java.net.InetSocketAddress;
-import java.util.Optional;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -45,17 +42,20 @@ 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 RateLimiter rateLimiter;
+    private final AntiBotService antiBotService;
 
-    public ProtocolSupportListener(FastLoginBukkit plugin, RateLimiter rateLimiter) {
+    public ProtocolSupportListener(FastLoginBukkit plugin, AntiBotService antiBotService) {
         super(plugin.getCore(), plugin.getCore().getAuthPluginHook(), plugin.getBedrockService());
 
         this.plugin = plugin;
-        this.rateLimiter = rateLimiter;
+        this.antiBotService = antiBotService;
     }
 
     @EventHandler
@@ -64,30 +64,40 @@ public class ProtocolSupportListener extends JoinManagement<Player, CommandSende
             return;
         }
 
-        if (!rateLimiter.tryAcquire()) {
-            plugin.getLog().warn("Simple Anti-Bot join limit - Ignoring {}", loginStartEvent.getConnection());
-            return;
-        }
-
         String username = loginStartEvent.getConnection().getProfile().getName();
-        InetSocketAddress address = loginStartEvent.getAddress();
+        InetSocketAddress address = loginStartEvent.getConnection().getRawAddress();
+        plugin.getLog().info("Incoming login request for {} from {}", username, address);
 
-        //remove old data every time on a new login in order to keep the session only for one person
-        plugin.removeSession(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);
+                ProtocolLoginSource source = new ProtocolLoginSource(loginStartEvent);
+                super.onLogin(username, source);
+                break;
+        }
     }
 
     @EventHandler
     public void onConnectionClosed(ConnectionCloseEvent closeEvent) {
-        InetSocketAddress address = closeEvent.getConnection().getAddress();
+        InetSocketAddress address = closeEvent.getConnection().getRawAddress();
         plugin.removeSession(address);
     }
 
     @EventHandler
     public void onPropertiesResolve(PlayerProfileCompleteEvent profileCompleteEvent) {
-        InetSocketAddress address = profileCompleteEvent.getAddress();
+        InetSocketAddress address = profileCompleteEvent.getConnection().getRawAddress();
+
         BukkitLoginSession session = plugin.getSession(address);
 
         if (session != null && profileCompleteEvent.getConnection().getProfile().isOnlineMode()) {
@@ -102,15 +112,16 @@ public class ProtocolSupportListener extends JoinManagement<Player, CommandSende
     }
 
     @Override
-    public FastLoginPreLoginEvent callFastLoginPreLoginEvent(String username, ProtocolLoginSource source, StoredProfile profile) {
+    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) {
+    public void requestPremiumLogin(ProtocolLoginSource source, StoredProfile profile, String username,
+                                    boolean registered) {
         source.enableOnlinemode();
 
         String ip = source.getAddress().getAddress().getHostAddress();

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -31,18 +31,16 @@ 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.bukkit.hook.SodionAuthHook;
+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;
+import org.bukkit.event.Listener;
 
 import java.lang.reflect.Constructor;
 import java.util.Arrays;
 import java.util.List;
 
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
-import org.bukkit.event.Listener;
-
 public class DelayedAuthHook implements Runnable {
 
     private final FastLoginBukkit plugin;
@@ -95,8 +93,8 @@ public class DelayedAuthHook implements Runnable {
     private AuthPlugin<Player> getAuthHook() {
         try {
             List<Class<? extends AuthPlugin<Player>>> hooks = Arrays.asList(AuthMeHook.class,
-                    CrazyLoginHook.class, LogItHook.class, LoginSecurityHook.class,
-                    SodionAuthHook.class, UltraAuthHook.class, xAuthHook.class);
+                    CrazyLoginHook.class, LogItHook.class, LoginSecurityHook.class, UltraAuthHook.class,
+                    XAuthHook.class);
 
             for (Class<? extends AuthPlugin<Player>> clazz : hooks) {
                 String pluginName = clazz.getSimpleName();
@@ -114,7 +112,7 @@ public class DelayedAuthHook implements Runnable {
         return null;
     }
 
-    private AuthPlugin<Player> newInstance(Class<? extends AuthPlugin<Player>> clazz)
+    protected AuthPlugin<Player> newInstance(Class<? extends AuthPlugin<Player>> clazz)
             throws ReflectiveOperationException {
         try {
             Constructor<? extends AuthPlugin<Player>> cons = clazz.getDeclaredConstructor(FastLoginBukkit.class);

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,22 +25,22 @@
  */
 package com.github.games647.fastlogin.bukkit.task;
 
-import java.net.InetSocketAddress;
-import java.util.UUID;
-
+import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
+import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
+import com.github.games647.fastlogin.core.shared.FastLoginCore;
+import com.github.games647.fastlogin.core.shared.FloodgateManagement;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.geysermc.floodgate.api.player.FloodgatePlayer;
 
-import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
-import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
-import com.github.games647.fastlogin.core.shared.FastLoginCore;
-import com.github.games647.fastlogin.core.shared.FloodgateManagement;
+import java.net.InetSocketAddress;
+import java.util.UUID;
 
 public class FloodgateAuthTask extends FloodgateManagement<Player, CommandSender, BukkitLoginSession, FastLoginBukkit> {
 
-    public FloodgateAuthTask(FastLoginCore<Player, CommandSender, FastLoginBukkit> core, Player player, FloodgatePlayer floodgatePlayer) {
+    public FloodgateAuthTask(FastLoginCore<Player, CommandSender, FastLoginBukkit> core, Player player,
+                             FloodgatePlayer floodgatePlayer) {
         super(core, player, floodgatePlayer);
     }
 
@@ -49,8 +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(autoLoginFloodgate.equals("true")
-                || (autoLoginFloodgate.equals("linked") && isLinked));
+        session.setVerified(isAutoAuthAllowed(autoLoginFloodgate));
 
         // run login task
         Runnable forceLoginTask = new ForceLoginTask(core.getPlugin().getCore(), player, session);

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -29,20 +29,19 @@ import com.github.games647.fastlogin.bukkit.BukkitLoginSession;
 import com.github.games647.fastlogin.bukkit.FastLoginBukkit;
 import com.github.games647.fastlogin.bukkit.event.BukkitFastLoginAutoLoginEvent;
 import com.github.games647.fastlogin.core.PremiumStatus;
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.message.SuccessMessage;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
 import com.github.games647.fastlogin.core.shared.ForceLoginManagement;
 import com.github.games647.fastlogin.core.shared.LoginSession;
 import com.github.games647.fastlogin.core.shared.event.FastLoginAutoLoginEvent;
-
-import java.util.concurrent.ExecutionException;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.metadata.FixedMetadataValue;
 
+import java.util.concurrent.ExecutionException;
+
 public class ForceLoginTask extends ForceLoginManagement<Player, CommandSender, BukkitLoginSession, FastLoginBukkit> {
 
     public ForceLoginTask(FastLoginCore<Player, CommandSender, FastLoginBukkit> core, Player player,

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

@@ -0,0 +1,48 @@
+/*
+ * 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;
+
+import com.github.games647.fastlogin.core.CommonUtil;
+import lombok.val;
+import net.md_5.bungee.api.chat.TextComponent;
+import net.md_5.bungee.chat.ComponentSerializer;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class FastLoginBukkitTest {
+
+    @Test
+    void testRGB() {
+        val message = "&x00002a00002b&lText";
+        val msg = CommonUtil.translateColorCodes(message);
+        assertEquals(msg, "§x00002a00002b§lText");
+
+        val components = TextComponent.fromLegacyText(msg);
+        val expected = "{\"bold\":true,\"color\":\"#00a00b\",\"text\":\"Text\"}";
+        assertEquals(ComponentSerializer.toString(components), expected);
+    }
+}

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

@@ -0,0 +1,43 @@
+/*
+ * 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;
+
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.FieldAccessor;
+import fr.xephi.authme.api.v3.AuthMeApi;
+import fr.xephi.authme.process.Management;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class ReflectionTest {
+
+    @Test
+    void testAuthMeManagementField() {
+        FieldAccessor accessor = Accessors.getFieldAccessor(AuthMeApi.class, Management.class, true);
+        assertNotNull(accessor.getField());
+    }
+}

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

@@ -0,0 +1,44 @@
+/*
+ * 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.hook;
+
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.FieldAccessor;
+import de.st_ddt.crazylogin.CrazyLogin;
+import de.st_ddt.crazylogin.listener.PlayerListener;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class CrazyLoginHookTest {
+
+    @Test
+    void testPlayerListener() {
+        FieldAccessor accessor = Accessors.getFieldAccessor(CrazyLogin.class, PlayerListener.class, true);
+        assertNotNull(accessor.getField());
+    }
+
+}

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

@@ -0,0 +1,49 @@
+/*
+ * 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.protocollib;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import lombok.val;
+
+import java.io.IOException;
+import java.util.Base64;
+
+public class Base64Adapter extends TypeAdapter<byte[]> {
+
+    @Override
+    public void write(JsonWriter out, byte[] value) throws IOException {
+        val encoded = Base64.getEncoder().encodeToString(value);
+        out.value(encoded);
+    }
+
+    @Override
+    public byte[] read(JsonReader in) throws IOException {
+        String encoded = in.nextString();
+        return Base64.getDecoder().decode(encoded);
+    }
+}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,22 +25,274 @@
  */
 package com.github.games647.fastlogin.bukkit.listener.protocollib;
 
-import java.security.SecureRandom;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.SignatureTestData.SignatureData;
+import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.google.common.hash.Hashing;
+import lombok.val;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
 
-import org.junit.Test;
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.SecretKey;
+import javax.crypto.spec.SecretKeySpec;
+import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
+import java.security.GeneralSecurityException;
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.KeyPair;
+import java.security.NoSuchAlgorithmException;
+import java.security.PublicKey;
+import java.security.SignatureException;
+import java.security.interfaces.RSAPublicKey;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.UUID;
+import java.util.concurrent.ThreadLocalRandom;
 
-import static org.hamcrest.CoreMatchers.is;
-import static org.hamcrest.CoreMatchers.notNullValue;
-import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
 
-public class EncryptionUtilTest {
+class EncryptionUtilTest {
 
     @Test
-    public void testVerifyToken() {
-        SecureRandom random = new SecureRandom();
+    void testVerifyToken() {
+        val random = ThreadLocalRandom.current();
         byte[] token = EncryptionUtil.generateVerifyToken(random);
 
-        assertThat(token, notNullValue());
-        assertThat(token.length, is(4));
+        assertAll(
+                () -> assertNotNull(token),
+                () -> assertEquals(token.length, 4)
+        );
+    }
+
+    @Test
+    void testServerKey() {
+        KeyPair keyPair = EncryptionUtil.generateKeyPair();
+
+        Key privateKey = keyPair.getPrivate();
+        assertEquals(privateKey.getAlgorithm(), "RSA");
+
+        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
+        assertEquals(publicKey.getAlgorithm(), "RSA");
+
+        // clients accept larger values than the standard vanilla server, but we shouldn't crash them
+        assertAll(
+                () -> assertTrue(publicKey.getModulus().bitLength() >= 1024),
+                () -> assertTrue(publicKey.getModulus().bitLength() < 8192)
+        );
+    }
+
+    @Test
+    void testExpiredClientKey() throws Exception {
+        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+
+        // Client expires at the exact second mentioned, so use it for verification
+        val expiredTimestamp = clientKey.expiry();
+        assertFalse(EncryptionUtil.verifyClientKey(clientKey, expiredTimestamp, null));
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            // expiration date changed should make the signature invalid while still being not expired
+            "client_keys/invalid_wrong_expiration.json",
+            // changed public key no longer corresponding to the signature
+            "client_keys/invalid_wrong_key.json",
+            // signature modified no longer corresponding to key and expiration date
+            "client_keys/invalid_wrong_signature.json"
+    })
+    void testInvalidClientKey(String clientKeySource) throws Exception {
+        val clientKey = ResourceLoader.loadClientKey(clientKeySource);
+        Instant expireTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
+
+        assertFalse(EncryptionUtil.verifyClientKey(clientKey, expireTimestamp, null));
+    }
+
+    @Test
+    void testValidClientKey() throws Exception {
+        val clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        val verificationTimestamp = clientKey.expiry().minus(5, ChronoUnit.HOURS);
+
+        assertTrue(EncryptionUtil.verifyClientKey(clientKey, verificationTimestamp, null));
+    }
+
+    @Test
+    void testValid191ClientKey() throws Exception {
+        val clientKey = 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");
+        assertTrue(EncryptionUtil.verifyClientKey(clientKey, verificationTimestamp, ownerPremiumId));
+    }
+
+    @Test
+    void testIncorrect191ClientOwner() throws Exception {
+        val clientKey = 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");
+        assertFalse(EncryptionUtil.verifyClientKey(clientKey, verificationTimestamp, ownerPremiumId));
+    }
+
+    @Test
+    void testDecryptSharedSecret() throws Exception {
+        KeyPair serverPair = EncryptionUtil.generateKeyPair();
+        val serverPK = serverPair.getPublic();
+
+        SecretKey secretKey = generateSharedKey();
+        byte[] encryptedSecret = encrypt(serverPK, secretKey.getEncoded());
+
+        SecretKey decryptSharedKey = EncryptionUtil.decryptSharedKey(serverPair.getPrivate(), encryptedSecret);
+        assertEquals(decryptSharedKey, secretKey);
+    }
+
+    private static byte[] encrypt(PublicKey receiverKey, byte... message)
+            throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
+            IllegalBlockSizeException, BadPaddingException {
+        val encryptCipher = Cipher.getInstance(receiverKey.getAlgorithm());
+        encryptCipher.init(Cipher.ENCRYPT_MODE, receiverKey);
+        return encryptCipher.doFinal(message);
+    }
+
+    private static SecretKeySpec generateSharedKey() {
+        // according to wiki.vg 16 bytes long
+        byte[] sharedKey = new byte[16];
+        ThreadLocalRandom.current().nextBytes(sharedKey);
+        // shared key is to be used for the AES/CFB8 stream cipher to encrypt the traffic
+        // therefore the encryption/decryption has to be AES
+        return new SecretKeySpec(sharedKey, "AES");
+    }
+
+    @Test
+    void testServerIdHash() throws Exception {
+        val serverId = "";
+        val sharedSecret = generateSharedKey();
+        val serverPK = ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
+
+        String sessionHash = getServerHash(serverId, sharedSecret, serverPK);
+        assertEquals(EncryptionUtil.getServerIdHashString(serverId, sharedSecret, serverPK), sessionHash);
+    }
+
+    private static String getServerHash(@SuppressWarnings("SameParameterValue") CharSequence serverId,
+                                        SecretKey sharedSecret, PublicKey serverPK) {
+        // https://wiki.vg/Protocol_Encryption#Client
+        // sha1 := Sha1()
+        // sha1.update(ASCII encoding of the server id string from Encryption Request)
+        // sha1.update(shared secret)
+        // sha1.update(server's encoded public key from Encryption Request)
+        // hash := sha1.hexdigest() # String of hex characters
+        @SuppressWarnings("deprecation")
+        val hasher = Hashing.sha1().newHasher();
+        hasher.putString(serverId, StandardCharsets.US_ASCII);
+        hasher.putBytes(sharedSecret.getEncoded());
+        hasher.putBytes(serverPK.getEncoded());
+        //  It works by treating the sha1 output bytes as one large integer in two's complement and then printing the
+        //  integer in base 16, placing a minus sign if the interpreted number is negative.
+        // reference: 
+        // https://github.com/SpigotMC/BungeeCord/blob/ff5727c5ef9c0b56ad35f9816ae6bd660b622cf0/proxy/src/main/java/net/md_5/bungee/connection/InitialHandler.java#L456
+        return new BigInteger(hasher.hash().asBytes()).toString(16);
+    }
+
+    @Test
+    void testServerIdHashWrongSecret() throws Exception {
+        val serverId = "";
+        val sharedSecret = generateSharedKey();
+        val serverPK = ResourceLoader.loadClientKey("client_keys/valid_public_key.json").key();
+
+        String sessionHash = getServerHash(serverId, sharedSecret, serverPK);
+        assertNotEquals(EncryptionUtil.getServerIdHashString("", generateSharedKey(), serverPK), sessionHash);
+    }
+
+    @Test
+    void testServerIdHashWrongServerKey() {
+        val serverId = "";
+        val sharedSecret = generateSharedKey();
+        val serverPK = EncryptionUtil.generateKeyPair().getPublic();
+
+        String sessionHash = getServerHash(serverId, sharedSecret, serverPK);
+        val wrongPK = EncryptionUtil.generateKeyPair().getPublic();
+        assertNotEquals(EncryptionUtil.getServerIdHashString("", sharedSecret, wrongPK), sessionHash);
+    }
+
+    @Test
+    void testValidSignedNonce() throws Exception {
+        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        SignatureTestData testData = SignatureTestData.fromResource("signature/valid_signature.json");
+        assertTrue(verifySignedNonce(testData, clientKey));
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {
+            "signature/incorrect_nonce.json",
+            "signature/incorrect_salt.json",
+            "signature/incorrect_signature.json",
+    })
+    void testIncorrectNonce(String signatureSource) throws Exception {
+        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/valid_public_key.json");
+        SignatureTestData testData = SignatureTestData.fromResource(signatureSource);
+        assertFalse(verifySignedNonce(testData, clientKey));
+    }
+
+    @Test
+    void testWrongPublicKeySigned() throws Exception {
+        // load a different public key
+        ClientPublicKey clientKey = ResourceLoader.loadClientKey("client_keys/invalid_wrong_key.json");
+        SignatureTestData testData = SignatureTestData.fromResource("signature/valid_signature.json");
+        assertFalse(verifySignedNonce(testData, clientKey));
+    }
+
+    private static boolean verifySignedNonce(SignatureTestData testData, ClientPublicKey clientKey)
+            throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+        PublicKey clientPublicKey = clientKey.key();
+
+        byte[] nonce = testData.getNonce();
+        SignatureData signature = testData.getSignature();
+        long salt = signature.getSalt();
+        return EncryptionUtil.verifySignedNonce(nonce, clientPublicKey, salt, signature.getSignature());
+    }
+
+    @Test
+    void testNonce() throws Exception {
+        byte[] expected = {1, 2, 3, 4};
+        val serverKey = EncryptionUtil.generateKeyPair();
+        val encryptedNonce = encrypt(serverKey.getPublic(), expected);
+
+        assertTrue(EncryptionUtil.verifyNonce(expected, serverKey.getPrivate(), encryptedNonce));
+    }
+
+    @Test
+    void testNonceIncorrect() throws Exception {
+        byte[] expected = {1, 2, 3, 4};
+        val serverKey = EncryptionUtil.generateKeyPair();
+
+        // flipped first character
+        val encryptedNonce = encrypt(serverKey.getPublic(), new byte[]{0, 2, 3, 4});
+        assertFalse(EncryptionUtil.verifyNonce(expected, serverKey.getPrivate(), encryptedNonce));
+    }
+
+    @Test
+    void testNonceFailedDecryption() throws Exception {
+        byte[] expected = {1, 2, 3, 4};
+        val serverKey = EncryptionUtil.generateKeyPair();
+        // generate a new keypair that is different
+        val encryptedNonce = encrypt(EncryptionUtil.generateKeyPair().getPublic(), expected);
+
+        assertThrows(GeneralSecurityException.class,
+                () -> EncryptionUtil.verifyNonce(expected, serverKey.getPrivate(), encryptedNonce)
+        );
+    }
+
+    @Test
+    void testNonceIncorrectEmpty() {
+        byte[] expected = {1, 2, 3, 4};
+        val serverKey = EncryptionUtil.generateKeyPair();
+        byte[] encryptedNonce = {};
+
+        assertThrows(GeneralSecurityException.class,
+                () -> EncryptionUtil.verifyNonce(expected, serverKey.getPrivate(), encryptedNonce)
+        );
     }
 }

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

@@ -0,0 +1,97 @@
+/*
+ * 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.protocollib;
+
+import com.github.games647.fastlogin.bukkit.listener.protocollib.packet.ClientPublicKey;
+import com.google.common.io.Resources;
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import org.bouncycastle.util.io.pem.PemObject;
+import org.bouncycastle.util.io.pem.PemReader;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringReader;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.interfaces.RSAPublicKey;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.security.spec.X509EncodedKeySpec;
+import java.time.Instant;
+import java.util.Base64;
+
+public class ResourceLoader {
+
+    public static RSAPrivateKey parsePrivateKey(String keySpec)
+        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
+        try (
+            Reader reader = new StringReader(keySpec);
+            PemReader pemReader = new PemReader(reader)
+        ) {
+            PemObject pemObject = pemReader.readPemObject();
+            byte[] content = pemObject.getContent();
+            KeySpec privateKeySpec = new PKCS8EncodedKeySpec(content);
+
+            KeyFactory factory = KeyFactory.getInstance("RSA");
+            return (RSAPrivateKey) factory.generatePrivate(privateKeySpec);
+        }
+    }
+
+    protected static ClientPublicKey loadClientKey(String path)
+        throws NoSuchAlgorithmException, IOException, InvalidKeySpecException {
+        URL keyUrl = Resources.getResource(path);
+
+        String lines = Resources.toString(keyUrl, StandardCharsets.US_ASCII);
+        JsonObject object = new Gson().fromJson(lines, JsonObject.class);
+
+        Instant expires = Instant.parse(object.getAsJsonPrimitive("expires_at").getAsString());
+        String key = object.getAsJsonPrimitive("key").getAsString();
+        RSAPublicKey publicKey = parsePublicKey(key);
+
+        byte[] signature = Base64.getDecoder().decode(object.getAsJsonPrimitive("signature").getAsString());
+        return ClientPublicKey.of(expires, publicKey, signature);
+    }
+
+    private static RSAPublicKey parsePublicKey(String keySpec)
+        throws IOException, InvalidKeySpecException, NoSuchAlgorithmException {
+        try (
+            Reader reader = new StringReader(keySpec);
+            PemReader pemReader = new PemReader(reader)
+        ) {
+            PemObject pemObject = pemReader.readPemObject();
+            byte[] content = pemObject.getContent();
+            KeySpec pubKeySpec = new X509EncodedKeySpec(content);
+
+            KeyFactory factory = KeyFactory.getInstance("RSA");
+            return (RSAPublicKey) factory.generatePublic(pubKeySpec);
+        }
+    }
+}

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

@@ -0,0 +1,73 @@
+/*
+ * 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.protocollib;
+
+import com.google.common.io.Resources;
+import com.google.gson.Gson;
+import com.google.gson.annotations.JsonAdapter;
+import lombok.val;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+public class SignatureTestData {
+
+    public static SignatureTestData fromResource(String resourceName) throws IOException {
+        val keyUrl = Resources.getResource(resourceName);
+        val encodedSignature = Resources.toString(keyUrl, StandardCharsets.US_ASCII);
+
+        return new Gson().fromJson(encodedSignature, SignatureTestData.class);
+    }
+
+    @JsonAdapter(Base64Adapter.class)
+    private byte[] nonce;
+
+    private SignatureData signature;
+
+    public byte[] getNonce() {
+        return nonce;
+    }
+
+    public SignatureData getSignature() {
+        return signature;
+    }
+
+    public static class SignatureData {
+
+        private long salt;
+
+        @JsonAdapter(Base64Adapter.class)
+        private byte[] signature;
+
+        public long getSalt() {
+            return salt;
+        }
+
+        public byte[] getSignature() {
+            return signature;
+        }
+    }
+}

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

@@ -0,0 +1,66 @@
+/*
+ * 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.protocollib;
+
+import com.comphenix.protocol.injector.packet.PacketRegistry;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.FieldAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+import org.bukkit.Bukkit;
+import org.junit.jupiter.api.Test;
+import org.mockito.MockedStatic;
+
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mockStatic;
+
+class VerifyResponseTaskTest {
+
+    private static final String NETTY_INJECTOR_CLASS =
+            "com.comphenix.protocol.injector.netty.channel.NettyChannelInjector";
+
+    @Test
+    void getNetworkManagerReflection() throws ClassNotFoundException {
+        try (
+                MockedStatic<Bukkit> bukkitMock = mockStatic(Bukkit.class);
+                MockedStatic<MinecraftReflection> reflectionMock = mockStatic(MinecraftReflection.class);
+                MockedStatic<PacketRegistry> registryMock = mockStatic(PacketRegistry.class)
+        ) {
+            bukkitMock.when(Bukkit::getVersion).thenReturn("git-Bukkit-18fbb24 (MC: 1.17)");
+            reflectionMock.when(MinecraftReflection::getMinecraftPackage).thenReturn("xyz");
+            reflectionMock.when(MinecraftReflection::getEnumProtocolClass).thenReturn(Object.class);
+
+            registryMock.when(() -> PacketRegistry.tryGetPacketClass(any())).thenReturn(Optional.empty());
+            
+            
+            Class<?> injectorClass = Class.forName(NETTY_INJECTOR_CLASS);
+            FieldAccessor accessor = Accessors.getFieldAccessorOrNull(injectorClass, "networkManager", Object.class);
+            assertNotNull(accessor.getField());
+        }
+    }
+}

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

@@ -0,0 +1,60 @@
+/*
+ * 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.task;
+
+import com.github.games647.fastlogin.core.hooks.AuthPlugin;
+import lombok.val;
+import org.bukkit.entity.Player;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class DelayedAuthHookTest {
+
+    @Test
+    void createNewReflectiveInstance() throws ReflectiveOperationException {
+        val authHook = new DelayedAuthHook(null);
+        assertNotNull(authHook.newInstance(DummyHook.class));
+    }
+
+    public static class DummyHook implements AuthPlugin<Player> {
+
+        @Override
+        public boolean forceLogin(Player player) {
+            return false;
+        }
+
+        @Override
+        public boolean forceRegister(Player player, String password) {
+            return false;
+        }
+
+        @Override
+        public boolean isRegistered(String playerName) throws Exception {
+            return false;
+        }
+    }
+}

bukkit/src/test/java/integration/README.md

@@ -0,0 +1,53 @@
+# Integration tests for authentication
+
+## Description
+
+Projects require integration tests in order to check against errors that could only occur if connected to other
+components. However, they are heavier in terms of performance and require a more complex setup. Unit tests often make
+use of fake, mock, stubs, etc. implementations to test the unit in isolation and thus could hide issues across
+boundaries of a unit. Nevertheless, both are not replacement for each other.
+
+## Usage in this project
+
+The authentication system is a core component, so it requires some kind of testing. Here we are going to
+spin up a Spigot server and test with the supported authentication schemes against the implementation of MCProtocolLib.
+
+### Goals
+
+* OS platform independent
+* Reproducible, but not fixed to a specific image hash
+    * This is a dev container, so fixing it to feature/major version is enough instead of a version fixed by hash
+* Improve container spin up
+    * E.g. Remove/Reduce world generation
+
+### Note on automation
+
+The simplest solution it to use the official Mojang session and authentication servers. However, this would require
+a spare Minecraft account. Mocking the auth servers would be a solution to avoid this.
+
+## Related
+
+Interest blog article about integration tests and why they are necessary.
+https://software.rajivprab.com/2019/04/28/rethinking-software-testing-perspectives-from-the-world-of-hardware/
+
+## Issues
+
+### Slow startup
+
+Tried a lot of optimizations like only loading a single world without the nether or the end. However, there the startup
+is still slow. If you have any ideas on how to tune the startup parameters of the Minecraft server or the JVM
+itself to reduce the startup time, please suggest it.
+
+### Checkpoint
+
+An idea to optimize the time is to use CRIU (checkpoint and restore). So to save the process at a certain stage and
+restore all data multiple times. This could cause a lot of issues like open files have to be present. However, the
+impact is significant and since it runs inside the container all files, pids (pid=1) should be matching. Potential
+checkpoint locations are:
+
+* Direct before loading the plugins
+  * Likely before binding the port to prevent issues
+* After loading the libraries
+
+Nevertheless, the current state requires to run it with root and the Java support is currently still in progress.
+

bukkit/src/test/resources/client_keys/README.md

@@ -0,0 +1,27 @@
+# About
+
+This contains test resources for the unit tests. The files are extracted from the Minecraft directory with slight
+modifications. The files are found in `$MINECRAFT_HOME$/profilekeys/`, where `$MINECRAFT_HOME$` represents the
+OS-dependent minecraft folder.
+
+**Notable the files in this folder do not contain the private key information. It should be explicitly
+stripped before including it.**
+
+## Minecraft folder
+
+* Windows: `%appdata%\.minecraft`
+* Linux: `/home/username/.minecraft`
+* Mac: `~/Library/Application Support/minecraft`
+
+## Directory structure
+
+* `valid_public_key.json`: Extracted from the actual file
+* `invalid_wrong_expiration.json`: Changed the expiration date
+* `invalid_wrong_key.json`: Modified public key while keeping the RSA structure valid
+* `invalid_wrong_signature.json`: Changed a character in the public key signature
+
+## File content
+
+* `expires_at`: Expiration date
+* `key`: Public key from the original file out of `public_key.key`
+* `signature`: Mojang signed signature of this public key

bukkit/src/test/resources/client_keys/invalid_wrong_expiration.json

@@ -0,0 +1,5 @@
+{
+    "expires_at": "2022-06-20T07:31:47.318722344Z",
+    "key": "-----BEGIN RSA PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApd3ZxDhcRWWru1XEBke6uYqmbnS2Oxyk\nOMj+QDKrkwUqhVJYciyXGsMx46Mgr/KIoGCcokP5OtIxc6+69/ZLqJ9PvM81kLIxAqyvfBMKMGjP\n376LgxTF1FeDpbe5zXaNRxfmnvQhS5YTLbzgk36qWVjqxJMG4VLVmh7RV5zWsb7XlckZb2zRHM2Y\nMHbEC+ggX+l6zQyfG1KK0MH5k+O6b0xD0rv1wm24sLOesTXH6RZG8cNE3ofdnavxjFodTOnra6w1\naiVcoUTdEPSS86wQwq9j0YCcAKOwMXsqbk9NhpujrdyJ94dev+ELwkNS7P0pPrcfiyFTQeJCZTXz\nJB36MwIDAQAB\n-----END RSA PUBLIC KEY-----\n",
+    "signature": "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"
+}

bukkit/src/test/resources/client_keys/invalid_wrong_key.json

@@ -0,0 +1,5 @@
+{
+    "expires_at": "2022-06-20T08:31:47.318722344Z",
+    "key": "-----BEGIN RSA PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoOv23jt2QPyab6bPRBwH2ggmzQU3I+xmDpi3X5ZB5Em/4uzyZqNVLJc0gShpk0XsdoB28Nq1bPxczOTBxuXi3rg5ax5gL+iymDSU27DLM8s/33lOofzGPJUEQGKlFm0QelDKZ/q5Y/9inHE3hEJKf7h0tnmGahXFmZSF/nRz9GHnfSYpjtDr9bsZOzQuLhHXT5E4ksNRTFW41h0MlZ1qOhO+NiiVgk7LmgVYiV7RRbgO8U6RaCEqg5n28Ewo6QtzB+DF4NTDeu3E9BLH5G0npdUrVNhdRUWCFDmH6n9hqSIz2J7o6GvWqEvp0h9e/3qtLsoS60hnQXunrcWcPaEIYQIDAQAB\n-----END RSA PUBLIC KEY-----\n",
+    "signature": "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"
+}

bukkit/src/test/resources/client_keys/invalid_wrong_signature.json

@@ -0,0 +1,5 @@
+{
+    "expires_at": "2022-06-20T08:31:47.318722344Z",
+    "key": "-----BEGIN RSA PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApd3ZxDhcRWWru1XEBke6uYqmbnS2Oxyk\nOMj+QDKrkwUqhVJYciyXGsMx46Mgr/KIoGCcokP5OtIxc6+69/ZLqJ9PvM81kLIxAqyvfBMKMGjP\n376LgxTF1FeDpbe5zXaNRxfmnvQhS5YTLbzgk36qWVjqxJMG4VLVmh7RV5zWsb7XlckZb2zRHM2Y\nMHbEC+ggX+l6zQyfG1KK0MH5k+O6b0xD0rv1wm24sLOesTXH6RZG8cNE3ofdnavxjFodTOnra6w1\naiVcoUTdEPSS86wQwq9j0YCcAKOwMXsqbk9NhpujrdyJ94dev+ELwkNS7P0pPrcfiyFTQeJCZTXz\nJB36MwIDAQAB\n-----END RSA PUBLIC KEY-----\n",
+    "signature": "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"
+}

bukkit/src/test/resources/client_keys/valid_public_key.json

@@ -0,0 +1,5 @@
+{
+    "expires_at": "2022-06-20T08:31:47.318722344Z",
+    "key": "-----BEGIN RSA PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApd3ZxDhcRWWru1XEBke6uYqmbnS2Oxyk\nOMj+QDKrkwUqhVJYciyXGsMx46Mgr/KIoGCcokP5OtIxc6+69/ZLqJ9PvM81kLIxAqyvfBMKMGjP\n376LgxTF1FeDpbe5zXaNRxfmnvQhS5YTLbzgk36qWVjqxJMG4VLVmh7RV5zWsb7XlckZb2zRHM2Y\nMHbEC+ggX+l6zQyfG1KK0MH5k+O6b0xD0rv1wm24sLOesTXH6RZG8cNE3ofdnavxjFodTOnra6w1\naiVcoUTdEPSS86wQwq9j0YCcAKOwMXsqbk9NhpujrdyJ94dev+ELwkNS7P0pPrcfiyFTQeJCZTXz\nJB36MwIDAQAB\n-----END RSA PUBLIC KEY-----\n",
+    "signature": "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"
+}

bukkit/src/test/resources/client_keys/valid_public_key_19_1.json

@@ -0,0 +1,5 @@
+{
+  "expires_at": "2022-07-29T12:57:39.011Z",
+  "key": "-----BEGIN RSA PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtYOUXdid0c09/eYoseLf8qG9fKQ/G2DY9wlSyEZaFMflwZ8ZpLFYigxzfaimpT3A5cbFIdIH2W2sYl5PwsKSs128GBh/rxXUEZlLkIkS+EfxyuMp9ITclxAjCqvFgfJbZHugtB9Ofi6knCEEgjFwMDh2efdpOXkCxtHuPFfnVzDJBbHWdlCCtJesMAnA2jCT7CqCwsi7sW2QxuTarqHP/cHKiBeBIu/SngGUB6eWmvAwERW5x2D+O26w8Z5sQCND3xQ4D868RALiPNG94TyKoJV+jKi0tTUmjGGs/1ksbSGDQb5xqIH0NYKZhoZrczYPNmJX4k7g5BA5RHX8AGORaQIDAQAB\n-----END RSA PUBLIC KEY-----\n",
+  "signature": "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"
+}

bukkit/src/test/resources/signature/README.md

@@ -0,0 +1,16 @@
+# About
+
+This contains test resources for the unit tests. Files in this folder include pre-made cryptographic signatures.
+
+## Directory structure
+
+* `valid_signature.json`: Extracted using packet extract from an actual authentication
+* `incorrect_nonce.json`: Different nonce token simulating that the server expected a different token than signed
+* `incorrect_salt.json`: Salt sent is different to the content signed by the signature (changed salt field)
+* `incorrect_signature.json`: Changed signature
+
+## File content
+
+* `nonce`: Server generated nonce token
+* `salt`: Client generated random token that will be signed
+* `signature`: Nonce and salt signed using the client key from `valid_public_key.json`

bukkit/src/test/resources/signature/incorrect_nonce.json

@@ -0,0 +1,7 @@
+{
+    "nonce": "galNig\u003d\u003d",
+    "signature": {
+        "signature": "JlXAUtIGDjxUOnF5vkg/NUEN2wlzXcqADyYIw2WRTb5hgKwIgxyUPO5v/2M7xU3hxz2Zf0iYHM97h8qNMGQ43cLgfVH9VWZ1kGMuOby2LNSb6nDaMzm0b02ftThaWOWj9kJXbR8fN7qdpB+28t2CTW5ILT+2AZYI/Sn8gFFR+LvJJt1ENMfEj2ZIIkHecpNBuKyLz1aDCZ5BEASSLfAqHEAA3dpHV1DIgzfpO6xwo7bVFDtcBEeusl/Nc3KyGyT8sDFTsZWgitgz53xNKrZUK8Q2BaJfP0zrGAX36rpYURJSVD0AtI1ic9s5aG+OFUC1YhLXb/1cDv37ZjHcdV2ppw\u003d\u003d",
+        "salt": -2985008842905108412
+    }
+}

bukkit/src/test/resources/signature/incorrect_salt.json

@@ -0,0 +1,7 @@
+{
+    "nonce": "GalNig\u003d\u003d",
+    "signature": {
+        "signature": "JlXAUtIGDjxUOnF5vkg/NUEN2wlzXcqADyYIw2WRTb5hgKwIgxyUPO5v/2M7xU3hxz2Zf0iYHM97h8qNMGQ43cLgfVH9VWZ1kGMuOby2LNSb6nDaMzm0b02ftThaWOWj9kJXbR8fN7qdpB+28t2CTW5ILT+2AZYI/Sn8gFFR+LvJJt1ENMfEj2ZIIkHecpNBuKyLz1aDCZ5BEASSLfAqHEAA3dpHV1DIgzfpO6xwo7bVFDtcBEeusl/Nc3KyGyT8sDFTsZWgitgz53xNKrZUK8Q2BaJfP0zrGAX36rpYURJSVD0AtI1ic9s5aG+OFUC1YhLXb/1cDv37ZjHcdV2ppw\u003d\u003d",
+        "salt": -1985008842905108412
+    }
+}

bukkit/src/test/resources/signature/incorrect_signature.json

@@ -0,0 +1,7 @@
+{
+    "nonce": "GalNig\u003d\u003d",
+    "signature": {
+        "signature": "jlXAUtIGDjxUOnF5vkg/NUEN2wlzXcqADyYIw2WRTb5hgKwIgxyUPO5v/2M7xU3hxz2Zf0iYHM97h8qNMGQ43cLgfVH9VWZ1kGMuOby2LNSb6nDaMzm0b02ftThaWOWj9kJXbR8fN7qdpB+28t2CTW5ILT+2AZYI/Sn8gFFR+LvJJt1ENMfEj2ZIIkHecpNBuKyLz1aDCZ5BEASSLfAqHEAA3dpHV1DIgzfpO6xwo7bVFDtcBEeusl/Nc3KyGyT8sDFTsZWgitgz53xNKrZUK8Q2BaJfP0zrGAX36rpYURJSVD0AtI1ic9s5aG+OFUC1YhLXb/1cDv37ZjHcdV2ppw\u003d\u003d",
+        "salt": -2985008842905108412
+    }
+}

bukkit/src/test/resources/signature/valid_signature.json

@@ -0,0 +1,7 @@
+{
+    "nonce": "GalNig\u003d\u003d",
+    "signature": {
+        "signature": "JlXAUtIGDjxUOnF5vkg/NUEN2wlzXcqADyYIw2WRTb5hgKwIgxyUPO5v/2M7xU3hxz2Zf0iYHM97h8qNMGQ43cLgfVH9VWZ1kGMuOby2LNSb6nDaMzm0b02ftThaWOWj9kJXbR8fN7qdpB+28t2CTW5ILT+2AZYI/Sn8gFFR+LvJJt1ENMfEj2ZIIkHecpNBuKyLz1aDCZ5BEASSLfAqHEAA3dpHV1DIgzfpO6xwo7bVFDtcBEeusl/Nc3KyGyT8sDFTsZWgitgz53xNKrZUK8Q2BaJfP0zrGAX36rpYURJSVD0AtI1ic9s5aG+OFUC1YhLXb/1cDv37ZjHcdV2ppw\u003d\u003d",
+        "salt": -2985008842905108412
+    }
+}

bungee/pom.xml

@@ -4,7 +4,7 @@
 
     The MIT License (MIT)
 
-    Copyright (c) 2015-2021 <Your name and contributors>
+    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
@@ -25,14 +25,14 @@
     SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.11-SNAPSHOT</version>
+        <version>1.12-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -46,10 +46,11 @@
     <build>
         <plugins>
             <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.2.4</version>
+                <version>3.5.1</version>
                 <configuration>
+                    <minimizeJar>true</minimizeJar>
+
                     <createDependencyReducedPom>false</createDependencyReducedPom>
                     <shadedArtifactAttached>false</shadedArtifactAttached>
                     <artifactSet>
@@ -73,8 +74,18 @@
                     <!-- Rename the service file too to let SLF4J api find our own relocated jdk logger -->
                     <!-- Located in META-INF/services -->
                     <transformers>
-                        <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                        <transformer
+                                implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                     </transformers>
+                    <filters>
+                        <filter>
+                            <artifact>*:*</artifact>
+                            <excludes>
+                                <exclude>META-INF/MANIFEST.MF</exclude>
+                                <exclude>**/module-info.class</exclude>
+                            </excludes>
+                        </filter>
+                    </filters>
                 </configuration>
                 <executions>
                     <execution>
@@ -94,11 +105,6 @@
             <url>https://repo.codemc.io/repository/maven-public/</url>
         </repository>
 
-        <repository>
-            <id>spigotplugins-repo</id>
-            <url>https://maven.gamestrike.de/mvn/</url>
-        </repository>
-
         <repository>
             <id>jitpack.io</id>
             <url>https://jitpack.io</url>
@@ -120,7 +126,7 @@
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-proxy</artifactId>
-            <version>1.18-R0.1-SNAPSHOT</version>
+            <version>1.19-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
             <!-- Use our own newer api version -->
             <exclusions>
@@ -128,6 +134,30 @@
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-api</artifactId>
                 </exclusion>
+                <exclusion>
+                    <groupId>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>
+                </exclusion>
+                <exclusion>
+                    <groupId>net.md-5</groupId>
+                    <artifactId>bungeecord-slf4j</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.apache.maven</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.apache.maven.resolver</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
             </exclusions>
         </dependency>
 
@@ -139,11 +169,7 @@
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
-                    <groupId>io.netty</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.geysermc.cumulus</groupId>
+                    <groupId>*</groupId>
                     <artifactId>*</artifactId>
                 </exclusion>
             </exclusions>
@@ -151,7 +177,7 @@
 
         <!-- Bedrock player bridge -->
         <dependency>
-            <groupId>org.geysermc</groupId>
+            <groupId>org.geysermc.geyser</groupId>
             <artifactId>core</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
@@ -165,10 +191,16 @@
 
         <!-- We need the API, but it was excluded above -->
         <dependency>
-            <groupId>org.geysermc</groupId>
-            <artifactId>geyser-api</artifactId>
+            <groupId>org.geysermc.geyser</groupId>
+            <artifactId>api</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <!--Login plugin-->
@@ -179,32 +211,5 @@
             <scope>system</scope>
             <systemPath>${project.basedir}/lib/BungeeAuth-1.4.jar</systemPath>
         </dependency>
-
-        <dependency>
-            <groupId>de.xxschrandxx.bca</groupId>
-            <artifactId>BungeeCordAuthenticator</artifactId>
-            <version>0.0.2</version>
-            <scope>provided</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>*</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-
-        <dependency>
-            <groupId>com.github.Mohist-Community.SodionAuth</groupId>
-            <artifactId>SodionAuth-Bungee</artifactId>
-            <version>2bdfdc854b</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>com.github.Mohist-Community.SodionAuth</groupId>
-                    <artifactId>SodionAuth-Libs</artifactId>
-                </exclusion>
-            </exclusions>
-            <optional>true</optional>
-            <scope>provided</scope>
-        </dependency>
     </dependencies>
 </project>

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,8 +25,8 @@
  */
 package com.github.games647.fastlogin.bungee;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.LoginSession;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 
 public class BungeeLoginSession extends LoginSession {
 
@@ -59,10 +59,10 @@ public class BungeeLoginSession extends LoginSession {
 
     @Override
     public synchronized String toString() {
-        return this.getClass().getSimpleName() + '{' +
-                "alreadySaved=" + alreadySaved +
-                ", alreadyLogged=" + alreadyLogged +
-                ", registered=" + registered +
-                "} " + super.toString();
+        return this.getClass().getSimpleName() + '{'
+            + "alreadySaved=" + alreadySaved
+            + ", alreadyLogged=" + alreadyLogged
+            + ", registered=" + registered
+            + "} " + super.toString();
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,15 +26,14 @@
 package com.github.games647.fastlogin.bungee;
 
 import com.github.games647.fastlogin.core.shared.LoginSource;
-
-import java.net.InetSocketAddress;
-
 import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.chat.ComponentBuilder;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.event.PreLoginEvent;
 
+import java.net.InetSocketAddress;
+
 public class BungeeLoginSource implements LoginSource {
 
     private final PendingConnection connection;
@@ -72,8 +71,8 @@ public class BungeeLoginSource implements LoginSource {
 
     @Override
     public String toString() {
-        return this.getClass().getSimpleName() + '{' +
-                "connection=" + connection +
-                '}';
+        return this.getClass().getSimpleName() + '{'
+            + "connection=" + connection
+            + '}';
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -26,8 +26,6 @@
 package com.github.games647.fastlogin.bungee;
 
 import com.github.games647.fastlogin.bungee.hook.BungeeAuthHook;
-import com.github.games647.fastlogin.bungee.hook.BungeeCordAuthenticatorBungeeHook;
-import com.github.games647.fastlogin.bungee.hook.SodionAuthHook;
 import com.github.games647.fastlogin.bungee.listener.ConnectListener;
 import com.github.games647.fastlogin.bungee.listener.PluginMessageListener;
 import com.github.games647.fastlogin.core.AsyncScheduler;
@@ -46,26 +44,25 @@ import com.google.common.collect.MapMaker;
 import com.google.common.io.ByteArrayDataOutput;
 import com.google.common.io.ByteStreams;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
-
-import java.nio.file.Path;
-import java.util.Arrays;
-import java.util.List;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.ThreadFactory;
-
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.connection.Server;
+import net.md_5.bungee.api.plugin.Listener;
 import net.md_5.bungee.api.plugin.Plugin;
 import net.md_5.bungee.api.plugin.PluginManager;
 import net.md_5.bungee.api.scheduler.GroupedThreadFactory;
-
 import org.geysermc.floodgate.api.FloodgateApi;
 import org.geysermc.geyser.GeyserImpl;
 import org.slf4j.Logger;
 
+import java.nio.file.Path;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.ThreadFactory;
+
 /**
  * BungeeCord version of FastLogin. This plugin keeps track on online mode connections.
  */
@@ -82,7 +79,7 @@ public class FastLoginBungee extends Plugin implements PlatformPlugin<CommandSen
     @Override
     public void onEnable() {
         logger = CommonUtil.initializeLoggerService(getLogger());
-        scheduler = new AsyncScheduler(logger, getThreadFactory());
+        scheduler = new AsyncScheduler(logger, task -> getProxy().getScheduler().runAsync(this, task));
 
         core = new FastLoginCore<>(this);
         core.load();
@@ -101,7 +98,7 @@ public class FastLoginBungee extends Plugin implements PlatformPlugin<CommandSen
         //events
         PluginManager pluginManager = getProxy().getPluginManager();
 
-        ConnectListener connectListener = new ConnectListener(this, core.getRateLimiter());
+        Listener connectListener = new ConnectListener(this, core.getAntiBot());
         pluginManager.registerListener(this, connectListener);
         pluginManager.registerListener(this, new PluginMessageListener(this));
 
@@ -129,8 +126,9 @@ public class FastLoginBungee extends Plugin implements PlatformPlugin<CommandSen
 
     private void registerHook() {
         try {
-            List<Class<? extends AuthPlugin<ProxiedPlayer>>> hooks = Arrays.asList(
-                    BungeeAuthHook.class, BungeeCordAuthenticatorBungeeHook.class, SodionAuthHook.class);
+            List<Class<? extends AuthPlugin<ProxiedPlayer>>> hooks = Collections.singletonList(
+                    BungeeAuthHook.class
+            );
 
             for (Class<? extends AuthPlugin<ProxiedPlayer>> clazz : hooks) {
                 String pluginName = clazz.getSimpleName();

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,9 +25,9 @@
  */
 package com.github.games647.fastlogin.bungee.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.LoginSession;
 import com.github.games647.fastlogin.core.shared.event.FastLoginAutoLoginEvent;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import net.md_5.bungee.api.plugin.Cancellable;
 import net.md_5.bungee.api.plugin.Event;
 

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,9 +25,9 @@
  */
 package com.github.games647.fastlogin.bungee.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.LoginSource;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPreLoginEvent;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import net.md_5.bungee.api.plugin.Event;
 
 public class BungeeFastLoginPreLoginEvent extends Event implements FastLoginPreLoginEvent {

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,9 +25,8 @@
  */
 package com.github.games647.fastlogin.bungee.event;
 
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.event.FastLoginPremiumToggleEvent;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import net.md_5.bungee.api.plugin.Event;
 
 public class BungeeFastLoginPremiumToggleEvent extends Event implements FastLoginPremiumToggleEvent {

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,18 +27,18 @@ package com.github.games647.fastlogin.bungee.hook;
 
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
 import me.vik1395.BungeeAuth.Main;
 import me.vik1395.BungeeAuthAPI.RequestHandler;
-
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
 /**
- * GitHub: https://github.com/vik1395/BungeeAuth-Minecraft
- *
+ * GitHub:
+ * <a href="https://github.com/vik1395/BungeeAuth-Minecraft">...</a>
+ * <p>
  * Project page:
- *
- * Spigot: https://www.spigotmc.org/resources/bungeeauth.493/
+ * <p>
+ * Spigot:
+ * <a href="https://www.spigotmc.org/resources/bungeeauth.493/">...</a>
  */
 public class BungeeAuthHook implements AuthPlugin<ProxiedPlayer> {
 

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

@@ -1,92 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2021 <Your name 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.bungee.hook;
-
-import com.github.games647.fastlogin.bungee.FastLoginBungee;
-import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-
-import de.xxschrandxx.bca.bungee.BungeeCordAuthenticatorBungee;
-import de.xxschrandxx.bca.bungee.api.BungeeCordAuthenticatorBungeeAPI;
-
-import java.sql.SQLException;
-import java.util.logging.Level;
-
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-
-/**
- * GitHub:
- * https://github.com/xXSchrandXx/SpigotPlugins/tree/master/BungeeCordAuthenticator
- * <p>
- * Project page:
- * <p>
- * Spigot: https://www.spigotmc.org/resources/bungeecordauthenticator.87669/
- */
-public class BungeeCordAuthenticatorBungeeHook implements AuthPlugin<ProxiedPlayer> {
-
-    public final BungeeCordAuthenticatorBungeeAPI api;
-
-    public BungeeCordAuthenticatorBungeeHook(FastLoginBungee plugin) {
-        api = ((BungeeCordAuthenticatorBungee) plugin.getProxy().getPluginManager()
-            .getPlugin("BungeeCordAuthenticatorBungee")).getAPI();
-        plugin.getLog().info("BungeeCordAuthenticatorHook | Hooked successful!");
-    }
-
-    @Override
-    public boolean forceLogin(ProxiedPlayer player) {
-        if (api.isAuthenticated(player)) {
-            return true;
-        }
-
-        try {
-            api.setAuthenticated(player);
-        } catch (SQLException sqlEx) {
-            api.getLogger().log(Level.WARNING, "Failed to force login", sqlEx);
-            return false;
-        }
-
-        return true;
-    }
-
-    @Override
-    public boolean isRegistered(String playerName) {
-        try {
-            return api.getSQL().checkPlayerEntry(playerName);
-        } catch (SQLException sqlEx) {
-            api.getLogger().log(Level.WARNING, "Failed to check registration", sqlEx);
-            return false;
-        }
-    }
-
-    @Override
-    public boolean forceRegister(ProxiedPlayer player, String password) {
-        try {
-            return api.createPlayerEntry(player, password);
-        } catch (SQLException sqlEx) {
-            api.getLogger().log(Level.WARNING, "Failed to force register", sqlEx);
-            return false;
-        }
-    }
-}

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

@@ -1,78 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2021 <Your name 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.bungee.hook;
-
-import com.github.games647.fastlogin.bungee.FastLoginBungee;
-import com.github.games647.fastlogin.core.hooks.AuthPlugin;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import red.mohist.sodionauth.bungee.implementation.BungeePlayer;
-import red.mohist.sodionauth.core.SodionAuthApi;
-import red.mohist.sodionauth.core.exception.AuthenticatedException;
-
-/**
- * GitHub: https://github.com/Mohist-Community/SodionAuth
- * <p>
- * Project page: https://gitea.e-loli.com/SodionAuth/SodionAuth
- * <p>
- * Bukkit: Unknown
- * <p>
- * Spigot: https://www.spigotmc.org/resources/sodionauth.76944/
- */
-public class SodionAuthHook implements AuthPlugin<ProxiedPlayer> {
-
-    private final FastLoginBungee plugin;
-
-    public SodionAuthHook(FastLoginBungee plugin) {
-        this.plugin = plugin;
-    }
-
-    @Override
-    public boolean forceLogin(ProxiedPlayer player) {
-        try {
-            SodionAuthApi.login(new BungeePlayer(player));
-        } catch (AuthenticatedException e) {
-            plugin.getLog().warn(ALREADY_AUTHENTICATED, player);
-            return false;
-        }
-        return true;
-    }
-
-    @Override
-    public boolean forceRegister(ProxiedPlayer player, String password) {
-        try{
-            return SodionAuthApi.register(new BungeePlayer(player), password);
-        } catch (UnsupportedOperationException e){
-            plugin.getLog().warn("Currently SodionAuth is not accepting forceRegister, " +
-                    "It may be caused by unsupported AuthBackend");
-            return false;
-        }
-    }
-
-    @Override
-    public boolean isRegistered(String playerName) {
-        return SodionAuthApi.isRegistered(playerName);
-    }
-}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -31,18 +31,13 @@ import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.bungee.task.AsyncPremiumCheck;
 import com.github.games647.fastlogin.bungee.task.FloodgateAuthTask;
 import com.github.games647.fastlogin.bungee.task.ForceLoginTask;
-import com.github.games647.fastlogin.core.RateLimiter;
-import com.github.games647.fastlogin.core.StoredProfile;
+import com.github.games647.fastlogin.core.antibot.AntiBotService;
+import com.github.games647.fastlogin.core.antibot.AntiBotService.Action;
 import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
 import com.github.games647.fastlogin.core.shared.LoginSession;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import com.google.common.base.Throwables;
-
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodHandles.Lookup;
-import java.lang.reflect.Field;
-import java.util.UUID;
-
+import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.connection.Server;
@@ -53,14 +48,20 @@ import net.md_5.bungee.api.event.ServerConnectedEvent;
 import net.md_5.bungee.api.plugin.Listener;
 import net.md_5.bungee.connection.InitialHandler;
 import net.md_5.bungee.connection.LoginResult;
-import net.md_5.bungee.connection.LoginResult.Property;
 import net.md_5.bungee.event.EventHandler;
 import net.md_5.bungee.event.EventPriority;
-
+import net.md_5.bungee.protocol.Property;
 import org.geysermc.floodgate.api.player.FloodgatePlayer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodHandles.Lookup;
+import java.lang.reflect.Field;
+import java.net.InetSocketAddress;
+import java.util.UUID;
+
 /**
  * Enables online mode logins for specified users and sends plugin message to the Bukkit version of this plugin in
  * order to clear that the connection is online mode.
@@ -68,7 +69,7 @@ import org.slf4j.LoggerFactory;
 public class ConnectListener implements Listener {
 
     private static final String UUID_FIELD_NAME = "uniqueId";
-    private static final MethodHandle uniqueIdSetter;
+    protected static final MethodHandle UNIQUE_ID_SETTER;
 
     static {
         MethodHandle setHandle = null;
@@ -84,20 +85,20 @@ public class ConnectListener implements Listener {
             Logger logger = LoggerFactory.getLogger(ConnectListener.class);
             logger.error(
                     "Cannot find Bungee initial handler; Disabling premium UUID and skin won't work.",
-                reflectiveOperationException
+                    reflectiveOperationException
             );
         }
 
-        uniqueIdSetter = setHandle;
+        UNIQUE_ID_SETTER = setHandle;
     }
 
     private final FastLoginBungee plugin;
-    private final RateLimiter rateLimiter;
+    private final AntiBotService antiBotService;
     private final Property[] emptyProperties = {};
 
-    public ConnectListener(FastLoginBungee plugin, RateLimiter rateLimiter) {
+    public ConnectListener(FastLoginBungee plugin, AntiBotService antiBotService) {
         this.plugin = plugin;
-        this.rateLimiter = rateLimiter;
+        this.antiBotService = antiBotService;
     }
 
     @EventHandler
@@ -107,17 +108,28 @@ public class ConnectListener implements Listener {
             return;
         }
 
-        if (!rateLimiter.tryAcquire()) {
-            plugin.getLog().warn("Simple Anti-Bot join limit - Ignoring {}", connection);
-            return;
-        }
-
+        InetSocketAddress address = preLoginEvent.getConnection().getAddress();
         String username = connection.getName();
+
         plugin.getLog().info("Incoming login request for {} from {}", username, connection.getSocketAddress());
 
-        preLoginEvent.registerIntent(plugin);
-        Runnable asyncPremiumCheck = new AsyncPremiumCheck(plugin, preLoginEvent, connection, username);
-        plugin.getScheduler().runAsync(asyncPremiumCheck);
+        Action action = antiBotService.onIncomingConnection(address, username);
+        switch (action) {
+            case Ignore:
+                // just ignore
+                return;
+            case Block:
+                String message = plugin.getCore().getMessage("kick-antibot");
+                preLoginEvent.setCancelReason(TextComponent.fromLegacyText(message));
+                preLoginEvent.setCancelled(true);
+                break;
+            case Continue:
+            default:
+                preLoginEvent.registerIntent(plugin);
+                Runnable asyncPremiumCheck = new AsyncPremiumCheck(plugin, preLoginEvent, connection, username);
+                plugin.getScheduler().runAsync(asyncPremiumCheck);
+                break;
+        }
     }
 
     @EventHandler(priority = EventPriority.LOWEST)
@@ -140,8 +152,8 @@ public class ConnectListener implements Listener {
             StoredProfile playerProfile = session.getProfile();
             playerProfile.setId(verifiedUUID);
 
-            // bungeecord will do this automatically so override it on disabled option
-            if (uniqueIdSetter != null) {
+            // BungeeCord will do this automatically so override it on disabled option
+            if (UNIQUE_ID_SETTER != null) {
                 InitialHandler initialHandler = (InitialHandler) connection;
 
                 if (!plugin.getCore().getConfig().get("premiumUuid", true)) {
@@ -157,7 +169,7 @@ public class ConnectListener implements Listener {
         }
     }
 
-    private void setOfflineId(InitialHandler connection, String username) {
+    protected void setOfflineId(InitialHandler connection, String username) {
         try {
             UUID oldPremiumId = connection.getUniqueId();
             UUID offlineUUID = UUIDAdapter.generateOfflineId(username);
@@ -165,7 +177,7 @@ public class ConnectListener implements Listener {
             // BungeeCord only allows setting the UUID in PreLogin events and before requesting online mode
             // However if online mode is requested, it will override previous values
             // So we have to do it with reflection
-            uniqueIdSetter.invokeExact(connection, offlineUUID);
+            UNIQUE_ID_SETTER.invokeExact(connection, offlineUUID);
 
             String format = "Overridden UUID from {} to {} (based of {}) on {}";
             plugin.getLog().info(format, oldPremiumId, offlineUUID, username, connection);

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -28,17 +28,14 @@ package com.github.games647.fastlogin.bungee.listener;
 import com.github.games647.fastlogin.bungee.BungeeLoginSession;
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.bungee.task.AsyncToggleMessage;
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.hooks.bedrock.FloodgateService;
 import com.github.games647.fastlogin.core.message.ChangePremiumMessage;
 import com.github.games647.fastlogin.core.message.NamespaceKey;
 import com.github.games647.fastlogin.core.message.SuccessMessage;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import com.google.common.io.ByteArrayDataInput;
 import com.google.common.io.ByteStreams;
-
-import java.util.Arrays;
-
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
@@ -47,6 +44,8 @@ import net.md_5.bungee.api.event.PluginMessageEvent;
 import net.md_5.bungee.api.plugin.Listener;
 import net.md_5.bungee.event.EventHandler;
 
+import java.util.Arrays;
+
 public class PluginMessageListener implements Listener {
 
     private final FastLoginBungee plugin;

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -29,10 +29,9 @@ import com.github.games647.fastlogin.bungee.BungeeLoginSession;
 import com.github.games647.fastlogin.bungee.BungeeLoginSource;
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.bungee.event.BungeeFastLoginPreLoginEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
 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 net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.connection.PendingConnection;
 import net.md_5.bungee.api.connection.ProxiedPlayer;

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -27,10 +27,9 @@ package com.github.games647.fastlogin.bungee.task;
 
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.bungee.event.BungeeFastLoginPremiumToggleEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
-
 import com.github.games647.fastlogin.core.shared.event.FastLoginPremiumToggleEvent.PremiumToggleReason;
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.chat.TextComponent;
@@ -73,8 +72,8 @@ public class AsyncToggleMessage implements Runnable {
         playerProfile.setPremium(false);
         playerProfile.setId(null);
         core.getStorage().save(playerProfile);
-        PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName())) ?
-                PremiumToggleReason.COMMAND_OTHER : PremiumToggleReason.COMMAND_SELF;
+        PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName()))
+            ? PremiumToggleReason.COMMAND_OTHER : PremiumToggleReason.COMMAND_SELF;
         core.getPlugin().getProxy().getPluginManager().callEvent(
                 new BungeeFastLoginPremiumToggleEvent(playerProfile, reason));
         sendMessage("remove-premium");
@@ -89,8 +88,8 @@ public class AsyncToggleMessage implements Runnable {
 
         playerProfile.setPremium(true);
         core.getStorage().save(playerProfile);
-        PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName())) ?
-                PremiumToggleReason.COMMAND_OTHER : PremiumToggleReason.COMMAND_SELF;
+        PremiumToggleReason reason = (!isPlayerSender || !sender.getName().equalsIgnoreCase(playerProfile.getName()))
+            ? PremiumToggleReason.COMMAND_OTHER : PremiumToggleReason.COMMAND_SELF;
         core.getPlugin().getProxy().getPluginManager().callEvent(
                 new BungeeFastLoginPremiumToggleEvent(playerProfile, reason));
         sendMessage("add-premium");

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,19 +25,17 @@
  */
 package com.github.games647.fastlogin.bungee.task;
 
-import java.net.InetSocketAddress;
-import java.util.UUID;
-
-import org.geysermc.floodgate.api.player.FloodgatePlayer;
-
-import net.md_5.bungee.api.CommandSender;
-import net.md_5.bungee.api.connection.ProxiedPlayer;
-import net.md_5.bungee.api.connection.Server;
-
 import com.github.games647.fastlogin.bungee.BungeeLoginSession;
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.core.shared.FastLoginCore;
 import com.github.games647.fastlogin.core.shared.FloodgateManagement;
+import net.md_5.bungee.api.CommandSender;
+import net.md_5.bungee.api.connection.ProxiedPlayer;
+import net.md_5.bungee.api.connection.Server;
+import org.geysermc.floodgate.api.player.FloodgatePlayer;
+
+import java.net.InetSocketAddress;
+import java.util.UUID;
 
 public class FloodgateAuthTask
         extends FloodgateManagement<ProxiedPlayer, CommandSender, BungeeLoginSession, FastLoginBungee> {
@@ -55,13 +53,9 @@ public class FloodgateAuthTask
         BungeeLoginSession session = new BungeeLoginSession(player.getName(), isRegistered, profile);
         core.getPlugin().getSession().put(player.getPendingConnection(), session);
 
-        // enable auto login based on the value of 'autoLoginFloodgate' in config.yml
-        boolean forcedOnlineMode = autoLoginFloodgate.equals("true")
-                || (autoLoginFloodgate.equals("linked") && isLinked);
-
         // run login task
         Runnable forceLoginTask = new ForceLoginTask(core.getPlugin().getCore(), player, server, session,
-                forcedOnlineMode);
+                isAutoAuthAllowed(autoLoginFloodgate));
         core.getPlugin().getScheduler().runAsync(forceLoginTask);
     }
 

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -28,7 +28,6 @@ package com.github.games647.fastlogin.bungee.task;
 import com.github.games647.fastlogin.bungee.BungeeLoginSession;
 import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.bungee.event.BungeeFastLoginAutoLoginEvent;
-import com.github.games647.fastlogin.core.StoredProfile;
 import com.github.games647.fastlogin.core.message.ChannelMessage;
 import com.github.games647.fastlogin.core.message.LoginActionMessage;
 import com.github.games647.fastlogin.core.message.LoginActionMessage.Type;
@@ -36,14 +35,14 @@ import com.github.games647.fastlogin.core.shared.FastLoginCore;
 import com.github.games647.fastlogin.core.shared.ForceLoginManagement;
 import com.github.games647.fastlogin.core.shared.LoginSession;
 import com.github.games647.fastlogin.core.shared.event.FastLoginAutoLoginEvent;
-
-import java.util.UUID;
-
+import com.github.games647.fastlogin.core.storage.StoredProfile;
 import net.md_5.bungee.api.CommandSender;
 import net.md_5.bungee.api.ProxyServer;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.connection.Server;
 
+import java.util.UUID;
+
 public class ForceLoginTask
         extends ForceLoginManagement<ProxiedPlayer, CommandSender, BungeeLoginSession, FastLoginBungee> {
 

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

@@ -0,0 +1,57 @@
+/*
+ * 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.bungee.listener;
+
+import net.md_5.bungee.BungeeCord;
+import net.md_5.bungee.conf.Configuration;
+import net.md_5.bungee.connection.InitialHandler;
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Field;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.mock;
+
+class ConnectListenerTest {
+
+    @Test
+    void testUUIDSetter() throws Throwable {
+        BungeeCord proxyMock = mock(BungeeCord.class);
+        BungeeCord.setInstance(proxyMock);
+        
+        Configuration configMock = mock(Configuration.class);
+        Field configField = proxyMock.getClass().getField("config");
+        configField.setAccessible(true);
+        configField.set(proxyMock, configMock);
+
+        InitialHandler handler = new InitialHandler(proxyMock, null);
+
+        UUID expectedUUID = UUID.randomUUID();
+        ConnectListener.UNIQUE_ID_SETTER.invokeExact(handler, expectedUUID);
+        assertEquals(expectedUUID, handler.getUniqueId());
+    }
+}

checkstyle.xml

@@ -0,0 +1,233 @@
+<?xml version="1.0"?>
+<!--
+
+    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.
+
+-->
+<!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
+      names will be relative to the specified directory. See
+      https://checkstyle.org/config.html#Checker
+
+      <property name="basedir" value="${basedir}"/>
+  -->
+  <property name="severity" value="error"/>
+
+  <property name="fileExtensions" value="java, properties, xml"/>
+
+  <!-- Excludes all 'module-info.java' files              -->
+  <!-- See https://checkstyle.org/config_filefilters.html -->
+  <module name="BeforeExecutionExclusionFileFilter">
+    <property name="fileNamePattern" value="module\-info\.java$"/>
+  </module>
+
+  <!-- https://checkstyle.org/config_filters.html#SuppressionFilter -->
+  <module name="SuppressionFilter">
+    <property name="file" value="${org.checkstyle.sun.suppressionfilter.config}"
+              default="checkstyle-suppressions.xml" />
+    <property name="optional" value="true"/>
+  </module>
+
+  <!-- Checks that a package-info.java file exists for each package.     -->
+  <!-- See https://checkstyle.org/config_javadoc.html#JavadocPackage -->
+  <!--<module name="JavadocPackage"/>-->
+
+  <!-- Checks whether files end with a new line.                        -->
+  <!-- See https://checkstyle.org/config_misc.html#NewlineAtEndOfFile -->
+  <module name="NewlineAtEndOfFile"/>
+
+  <!-- Checks that property files contain the same keys.         -->
+  <!-- See https://checkstyle.org/config_misc.html#Translation -->
+  <module name="Translation"/>
+
+  <!-- Checks for Size Violations.                    -->
+  <!-- See https://checkstyle.org/config_sizes.html -->
+  <module name="FileLength"/>
+  <module name="LineLength">
+    <property name="max" value="120"/>
+    <property name="fileExtensions" value="java"/>
+    <property name="ignorePattern" value="^ *\* *@see.+$"/>
+  </module>
+
+  <!-- Checks for whitespace                               -->
+  <!-- See https://checkstyle.org/config_whitespace.html -->
+  <module name="FileTabCharacter"/>
+
+  <!-- Miscellaneous other checks.                   -->
+  <!-- See https://checkstyle.org/config_misc.html -->
+  <module name="RegexpSingleline">
+    <property name="format" value="\s+$"/>
+    <property name="minimum" value="0"/>
+    <property name="maximum" value="0"/>
+    <property name="message" value="Line has trailing spaces."/>
+  </module>
+
+  <!-- Checks for Headers                                -->
+  <!-- See https://checkstyle.org/config_header.html   -->
+  <!-- <module name="Header"> -->
+  <!--   <property name="headerFile" value="${checkstyle.header.file}"/> -->
+  <!--   <property name="fileExtensions" value="java"/> -->
+  <!-- </module> -->
+
+  <module name="TreeWalker">
+
+    <!-- Checks for Javadoc comments.                     -->
+    <!-- See https://checkstyle.org/config_javadoc.html -->
+    <module name="InvalidJavadocPosition"/>
+    <module name="JavadocMethod"/>
+    <!--<module name="JavadocType"/>-->
+    <!--<module name="JavadocVariable"/>-->
+    <!--<module name="JavadocStyle"/>-->
+    <!--<module name="MissingJavadocMethod"/>-->
+
+    <!-- Checks for Naming Conventions.                  -->
+    <!-- See https://checkstyle.org/config_naming.html -->
+    <module name="ConstantName"/>
+    <module name="LocalFinalVariableName"/>
+    <module name="LocalVariableName"/>
+    <module name="MemberName"/>
+    <module name="MethodName"/>
+    <module name="PackageName"/>
+    <module name="ParameterName"/>
+    <module name="StaticVariableName"/>
+    <module name="TypeName"/>
+
+    <!-- Checks for imports                              -->
+    <!-- See https://checkstyle.org/config_imports.html -->
+    <module name="AvoidStarImport"/>
+    <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
+    <module name="RedundantImport"/>
+    <module name="UnusedImports">
+      <property name="processJavadoc" value="false"/>
+    </module>
+
+    <!-- Checks for Size Violations.                    -->
+    <!-- See https://checkstyle.org/config_sizes.html -->
+    <module name="MethodLength"/>
+    <module name="ParameterNumber"/>
+
+    <!-- Checks for whitespace                               -->
+    <!-- See https://checkstyle.org/config_whitespace.html -->
+    <module name="EmptyForIteratorPad"/>
+    <module name="GenericWhitespace"/>
+    <module name="MethodParamPad"/>
+    <module name="NoWhitespaceAfter"/>
+    <module name="NoWhitespaceBefore"/>
+    <module name="OperatorWrap"/>
+    <module name="ParenPad"/>
+    <module name="TypecastParenPad"/>
+    <module name="WhitespaceAfter"/>
+    <module name="WhitespaceAround"/>
+
+    <!-- Modifier Checks                                    -->
+    <!-- See https://checkstyle.org/config_modifier.html -->
+    <module name="ModifierOrder"/>
+    <module name="RedundantModifier"/>
+
+    <!-- Checks for blocks. You know, those {}'s         -->
+    <!-- See https://checkstyle.org/config_blocks.html -->
+    <module name="AvoidNestedBlocks"/>
+    <module name="EmptyBlock"/>
+    <module name="LeftCurly"/>
+    <module name="NeedBraces"/>
+    <module name="RightCurly"/>
+
+    <!-- Checks for common coding problems               -->
+    <!-- See https://checkstyle.org/config_coding.html -->
+    <module name="EmptyStatement"/>
+    <module name="EqualsHashCode"/>
+    <module name="IllegalInstantiation"/>
+    <module name="InnerAssignment"/>
+    <!--<module name="MagicNumber"/>-->
+    <module name="MissingSwitchDefault"/>
+    <module name="MultipleVariableDeclarations"/>
+    <module name="SimplifyBooleanExpression"/>
+    <module name="SimplifyBooleanReturn"/>
+
+    <!-- Checks for class design                         -->
+    <!-- See https://checkstyle.org/config_design.html -->
+    <!--<module name="DesignForExtension"/>-->
+    <module name="FinalClass"/>
+    <module name="HideUtilityClassConstructor"/>
+    <module name="InterfaceIsType"/>
+
+    <!-- Miscellaneous other checks.                   -->
+    <!-- See https://checkstyle.org/config_misc.html -->
+    <module name="ArrayTypeStyle"/>
+    <!--<module name="FinalParameters"/>-->
+<!--    <module name="TodoComment"/>-->
+    <module name="UpperEll"/>
+
+    <!-- https://checkstyle.org/config_filters.html#SuppressionXpathFilter -->
+    <module name="SuppressionXpathFilter">
+      <property name="file" value="${org.checkstyle.sun.suppressionxpathfilter.config}"
+                default="checkstyle-xpath-suppressions.xml" />
+      <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) 2015-2021 <Your name and contributors>
+    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
@@ -25,14 +25,14 @@
     SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>com.github.games647</groupId>
         <artifactId>fastlogin</artifactId>
-        <version>1.11-SNAPSHOT</version>
+        <version>1.12-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -44,7 +44,7 @@
     <repositories>
         <repository>
             <id>luck-repo</id>
-            <url>https://ci.lucko.me/plugin/repository/everything</url>
+            <url>https://ci.lucko.me/plugin/repository/everything/</url>
             <snapshots>
                 <enabled>false</enabled>
             </snapshots>
@@ -57,9 +57,29 @@
         <repository>
             <id>opencollab-snapshot</id>
             <url>https://repo.opencollab.dev/maven-snapshots/</url>
+            <releases>
+                <enabled>false</enabled>
+            </releases>
         </repository>
     </repositories>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.3.0</version>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>com.github.games647.fastlogin.core</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
     <dependencies>
         <!-- Libraries that we shade into the project -->
 
@@ -82,20 +102,14 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
-            <version>2.0.0-alpha6</version>
+            <version>2.0.11</version>
         </dependency>
 
         <!-- snakeyaml is present in Bungee, Spigot, Cauldron, so we could use this independent implementation -->
         <dependency>
             <groupId>net.md-5</groupId>
             <artifactId>bungeecord-config</artifactId>
-            <version>1.16-R0.4</version>
-            <exclusions>
-                <exclusion>
-                    <groupId>*</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-            </exclusions>
+            <version>1.19-R0.1-SNAPSHOT</version>
         </dependency>
 
         <!--Floodgate for Xbox Live Authentication-->
@@ -106,11 +120,7 @@
             <scope>provided</scope>
             <exclusions>
                 <exclusion>
-                    <groupId>io.netty</groupId>
-                    <artifactId>*</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.geysermc.cumulus</groupId>
+                    <groupId>*</groupId>
                     <artifactId>*</artifactId>
                 </exclusion>
             </exclusions>
@@ -118,7 +128,7 @@
 
         <!-- Bedrock player bridge -->
         <dependency>
-            <groupId>org.geysermc</groupId>
+            <groupId>org.geysermc.geyser</groupId>
             <artifactId>core</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
@@ -132,17 +142,23 @@
 
         <!-- We need the API, but it was excluded above -->
         <dependency>
-            <groupId>org.geysermc</groupId>
-            <artifactId>geyser-api</artifactId>
+            <groupId>org.geysermc.geyser</groupId>
+            <artifactId>api</artifactId>
             <version>${geyser.version}</version>
             <scope>provided</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
         <!--Common component for contacting the Mojang API-->
         <dependency>
             <groupId>com.github.games647</groupId>
             <artifactId>craftapi</artifactId>
-            <version>0.5.1</version>
+            <version>0.6.2</version>
         </dependency>
 
         <!-- APIs we can use because they are available in all platforms (Spigot, Bungee, Velocity) -->
@@ -179,7 +195,14 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.9</version>
+            <version>2.10.1</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>[3.36,)</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
 </project>

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,16 +25,11 @@
  */
 package com.github.games647.fastlogin.core;
 
-import com.google.common.util.concurrent.MoreExecutors;
+import org.slf4j.Logger;
 
 import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.ThreadFactory;
-import java.util.concurrent.ThreadPoolExecutor;
-import java.util.concurrent.TimeUnit;
-
-import org.slf4j.Logger;
+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
@@ -53,42 +48,28 @@ public class AsyncScheduler {
     // 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 ExecutorService processingPool;
+    private final Executor processingPool;
 
-    /*
-    private final ExecutorService databaseExecutor = new ThreadPoolExecutor(1, 10,
-            0L, TimeUnit.MILLISECONDS,
-            new LinkedBlockingQueue<>(MAX_CAPACITY));
-     */
+    private final AtomicInteger currentlyRunning = new AtomicInteger();
 
-    public AsyncScheduler(Logger logger, ThreadFactory threadFactory) {
+    public AsyncScheduler(Logger logger, Executor processingPool) {
         this.logger = logger;
-        processingPool = new ThreadPoolExecutor(6, 32,
-                60L, TimeUnit.SECONDS,
-                new LinkedBlockingQueue<>(MAX_CAPACITY), threadFactory);
+        this.processingPool = processingPool;
     }
 
-    /*
-    public <R> CompletableFuture<R> runDatabaseTask(Supplier<R> databaseTask) {
-        return CompletableFuture.supplyAsync(databaseTask, databaseExecutor)
-                .exceptionally(error -> {
-                    logger.warn("Error occurred on thread pool", error);
-                    return null;
-                })
-                // change context to the processing pool
-                .thenApplyAsync(r -> r, processingPool);
-    }
-     */
-
     public CompletableFuture<Void> runAsync(Runnable task) {
-        return CompletableFuture.runAsync(task, processingPool).exceptionally(error -> {
+        return CompletableFuture.runAsync(() -> process(task), processingPool).exceptionally(error -> {
             logger.warn("Error occurred on thread pool", error);
             return null;
         });
     }
 
-    public void shutdown() {
-        MoreExecutors.shutdownAndAwaitTermination(processingPool, 1, TimeUnit.MINUTES);
-        //MoreExecutors.shutdownAndAwaitTermination(databaseExecutor, 1, TimeUnit.MINUTES);
+    private void process(Runnable task) {
+        currentlyRunning.incrementAndGet();
+        try {
+            task.run();
+        } finally {
+            currentlyRunning.getAndDecrement();
+        }
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -25,25 +25,24 @@
  */
 package com.github.games647.fastlogin.core;
 
-import com.github.games647.craftapi.cache.SafeCacheBuilder;
-import com.google.common.cache.CacheLoader;
-
-import java.lang.reflect.Constructor;
-import java.util.concurrent.ConcurrentMap;
-import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
-
+import com.google.common.cache.CacheBuilder;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.slf4j.jul.JDK14LoggerAdapter;
 
-public class CommonUtil {
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+
+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) {
-        SafeCacheBuilder<Object, Object> builder = SafeCacheBuilder.newBuilder();
+        CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
 
         if (expireAfterWrite > 0) {
             builder.expireAfterWrite(expireAfterWrite, TimeUnit.MINUTES);
@@ -53,15 +52,13 @@ public class CommonUtil {
             builder.maximumSize(maxSize);
         }
 
-        return builder.build(CacheLoader.from(() -> {
-            throw new UnsupportedOperationException();
-        }));
+        return builder.<K, V>build().asMap();
     }
 
     public static String translateColorCodes(String rawMessage) {
         char[] chars = rawMessage.toCharArray();
         for (int i = 0; i < chars.length - 1; i++) {
-            if (chars[i] == COLOR_CHAR && "0123456789AaBbCcDdEeFfKkLlMmNnOoRr".indexOf(chars[i + 1]) > -1) {
+            if (chars[i] == COLOR_CHAR && "x0123456789AaBbCcDdEeFfKkLlMmNnOoRr".indexOf(chars[i + 1]) > -1) {
                 chars[i] = TRANSLATED_CHAR;
                 chars[i + 1] = Character.toLowerCase(chars[i + 1]);
             }
@@ -74,7 +71,7 @@ public class CommonUtil {
      * This creates a SLF4J logger. In the process it initializes the SLF4J service provider. This method looks
      * for the provider in the plugin jar instead of in the server jar when creating a Logger. The provider is only
      * initialized once, so this method should be called early.
-     *
+     * <p>
      * The provider is bound to the service class `SLF4JServiceProvider`. Relocating this class makes it available
      * for exclusive own usage. Other dependencies will use the relocated service too, and therefore will find the
      * initialized provider.
@@ -93,12 +90,9 @@ public class CommonUtil {
         LoggerFactory.getLogger(parent.getName()).info("Initialize logging service");
         try {
             parent.setLevel(Level.ALL);
-
-            Class<JDK14LoggerAdapter> adapterClass = JDK14LoggerAdapter.class;
-            Constructor<JDK14LoggerAdapter> cons = adapterClass.getDeclaredConstructor(java.util.logging.Logger.class);
-            cons.setAccessible(true);
-            return cons.newInstance(parent);
-        } catch (ReflectiveOperationException reflectEx) {
+            return createJDKLogger(parent);
+        } catch (IllegalAccessException | InstantiationException | InvocationTargetException
+                 | NoSuchMethodException reflectEx) {
             parent.log(Level.WARNING, "Cannot create slf4j logging adapter", reflectEx);
             parent.log(Level.WARNING, "Creating logger instance manually...");
             return LoggerFactory.getLogger(parent.getName());
@@ -108,7 +102,15 @@ public class CommonUtil {
         }
     }
 
+    protected static JDK14LoggerAdapter createJDKLogger(java.util.logging.Logger parent)
+            throws NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
+        Class<JDK14LoggerAdapter> adapterClass = JDK14LoggerAdapter.class;
+        Constructor<JDK14LoggerAdapter> cons = adapterClass.getDeclaredConstructor(java.util.logging.Logger.class);
+        cons.setAccessible(true);
+        return cons.newInstance(parent);
+    }
+
     private CommonUtil() {
-        //Utility class
+        throw new RuntimeException("No instantiation of utility classes allowed");
     }
 }

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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

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

@@ -0,0 +1,81 @@
+/*
+ * 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.core;
+
+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;
+
+/**
+ * An extension to {@link MojangResolver} which allows connection using transparent reverse proxies.
+ * The significant difference is that unlike MojangResolver from the CraftAPI implementation, which sends the
+ * "ip" parameter when the hostIp parameter is an IPv4 address, but skips it for IPv6, this implementation leaves out
+ * the "ip" parameter also for IPv4, effectively enabling transparent proxies to work.
+ *
+ * @author games647, Enginecrafter77
+ */
+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);
+    }
+}

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

@@ -1,7 +0,0 @@
-package com.github.games647.fastlogin.core;
-
-@FunctionalInterface
-public interface RateLimiter {
-
-    boolean tryAcquire();
-}

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

@@ -1,77 +0,0 @@
-/*
- * SPDX-License-Identifier: MIT
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2015-2021 <Your name 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;
-
-import com.google.common.base.Ticker;
-
-import java.util.Arrays;
-
-/**
- * Limit the number of requests with a maximum size. Each requests expire after the specified time making it available
- * for another request.
- */
-public class TickingRateLimiter implements RateLimiter {
-
-    private final Ticker ticker;
-
-    private final long[] requests;
-    private final long expireTime;
-    private int position;
-
-    public TickingRateLimiter(Ticker ticker, int maxLimit, long expireTime) {
-        this.ticker = ticker;
-
-        this.requests = new long[maxLimit];
-        this.expireTime = expireTime;
-
-        // fill the array with expired entry, because nanoTime could overflow and include negative numbers
-        long nowMilli = ticker.read() / 1_000_000;
-        long initialVal = nowMilli - expireTime;
-        Arrays.fill(requests, initialVal);
-    }
-
-    /**
-     * Ask if access is allowed. If so register the request.
-     *
-     * @return true if allowed - false otherwise without any side effects
-     */
-    @Override
-    public boolean tryAcquire() {
-        // current time millis is not monotonic - it can jump back depending on user choice or NTP
-        long nowMilli = ticker.read() / 1_000_000;
-        synchronized (this) {
-            // having synchronized will limit the amount of concurrency a lot
-            long oldest = requests[position];
-            if (nowMilli - oldest >= expireTime) {
-                requests[position] = nowMilli;
-                position = (position + 1) % requests.length;
-                return true;
-            }
-
-            return false;
-        }
-    }
-}

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

@@ -0,0 +1,62 @@
+/*
+ * 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.core.antibot;
+
+import org.slf4j.Logger;
+
+import java.net.InetSocketAddress;
+
+public class AntiBotService {
+
+    private final Logger logger;
+
+    private final RateLimiter rateLimiter;
+    private final Action limitReachedAction;
+
+    public AntiBotService(Logger logger, RateLimiter rateLimiter, Action limitReachedAction) {
+        this.logger = logger;
+
+        this.rateLimiter = rateLimiter;
+        this.limitReachedAction = limitReachedAction;
+    }
+
+    public Action onIncomingConnection(InetSocketAddress clientAddress, String username) {
+        if (!rateLimiter.tryAcquire()) {
+            logger.warn("Anti-Bot join limit - Ignoring {}", clientAddress);
+            return limitReachedAction;
+        }
+
+        return Action.Continue;
+    }
+
+    public enum Action {
+        Ignore,
+
+        Block,
+
+        Continue
+    }
+}

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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
@@ -23,3 +23,10 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
+package com.github.games647.fastlogin.core.antibot;
+
+@FunctionalInterface
+public interface RateLimiter {
+
+    boolean tryAcquire();
+}

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

@@ -0,0 +1,152 @@
+/*
+ * 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.core.antibot;
+
+import com.google.common.base.Ticker;
+
+import java.util.ArrayDeque;
+import java.util.Deque;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Limit the number of requests with a maximum size. Each requests expire after the specified time making it available
+ * for another request.
+ */
+public class TickingRateLimiter implements RateLimiter {
+
+    private final Ticker ticker;
+
+    // amount of milliseconds to expire
+    private final long expireTime;
+
+    // total request limit
+    private final int requestLimit;
+
+    private final Deque<TimeRecord> records;
+    private int totalRequests;
+
+    public TickingRateLimiter(Ticker ticker, int maxLimit, long expireTime) {
+        this.ticker = ticker;
+
+        this.requestLimit = maxLimit;
+        this.expireTime = expireTime;
+
+        records = new ArrayDeque<>(10);
+    }
+
+    /**
+     * Ask if access is allowed. If so register the request.
+     *
+     * @return true if allowed - false otherwise without any side effects
+     */
+    @Override
+    public boolean tryAcquire() {
+        // current time millis is not monotonic - it can jump back depending on user choice or NTP
+        long nowMilli = ticker.read() / 1_000_000;
+        synchronized (this) {
+            // having synchronized will limit the amount of concurrency a lot
+            TimeRecord oldest = records.peekFirst();
+            if (oldest != null && oldest.hasExpired(nowMilli)) {
+                records.pop();
+                totalRequests -= oldest.getRequestCount();
+            }
+
+            // total requests reached block any further requests
+            if (totalRequests >= requestLimit) {
+                return false;
+            }
+
+            TimeRecord latest = records.peekLast();
+            if (latest == null) {
+                // empty list - add new record
+                records.add(new TimeRecord(nowMilli, expireTime));
+                totalRequests++;
+                return true;
+            }
+
+            int res = latest.compareTo(nowMilli);
+            if (res < 0) {
+                // now is before than the record means time jumps
+                throw new IllegalStateException("Time jumped back");
+            }
+
+            if (res == 0) {
+                // same minute record
+                latest.hit();
+                totalRequests++;
+                return true;
+            }
+
+            // now is one minute newer
+            records.add(new TimeRecord(nowMilli, expireTime));
+            totalRequests++;
+            return true;
+        }
+    }
+
+    private static class TimeRecord implements Comparable<TimeRecord> {
+
+        private final long firstMinuteRecord;
+        private final long expireTime;
+        private int count;
+
+        TimeRecord(long firstMinuteRecord, long expireTime) {
+            this.firstMinuteRecord = firstMinuteRecord;
+            this.expireTime = expireTime;
+            this.count = 1;
+        }
+
+        public void hit() {
+            count++;
+        }
+
+        public int getRequestCount() {
+            return count;
+        }
+
+        public boolean hasExpired(long now) {
+            return firstMinuteRecord + expireTime <= now;
+        }
+
+        public int compareTo(long other) {
+            if (other < firstMinuteRecord) {
+                // other is earlier
+                return -1;
+            }
+
+            if (other > firstMinuteRecord + TimeUnit.MINUTES.toMillis(1)) {
+                return +1;
+            }
+
+            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) 2015-2021 <Your name and contributors>
+ * 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
@@ -37,7 +37,7 @@ public interface AuthPlugin<P> {
 
     /**
      * Login the premium (paid account) player after the player joined successfully the server.
-     *
+     * <p>
      * <strong>This operation will be performed async while the player successfully
      * joined the server.</strong>
      *
@@ -48,17 +48,17 @@ public interface AuthPlugin<P> {
 
     /**
      * Forces a register in order to protect the paid account.
-     *
+     * <p>
      * <strong>This operation will be performed async while the player successfully
      * joined the server.</strong>
-     *
+     * <p>
      * After a successful registration the player should be logged
      * in too.
-     *
+     * <p>
      * The method will be called only for premium accounts.
      * So it's recommended to set additionally premium property
      * if possible.
-     *
+     * <p>
      * Background: If we don't register an account, cracked players
      * could steal the unregistered account from the paid
      * player account
@@ -71,11 +71,11 @@ public interface AuthPlugin<P> {
 
     /**
      * Checks whether an account exists for this player name.
-     *
+     * <p>
      * This check should check if a cracked player account exists,
      * so we can be sure the premium player doesn't steal the account
      * of that player.
-     *
+     * <p>
      * This operation will be performed async while the player is
      * connecting.
      *

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

@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2015-2021 <Your name and contributors>
+ * 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