TuxCoding/FastLogin

Checks if a Minecraft player has a valid paid account. If so, they can skip offline authentication automatically. (premium auto login) https://www.spigotmc.org/resources/fastlogin.14153

Download

Step 1. Add the JitPack repository to your build file

Add it in your root settings.gradle at the end of repositories:

	dependencyResolutionManagement {
		repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
		repositories {
			mavenCentral()
			maven { url 'https://jitpack.io' }
		}
	}

Add it in your settings.gradle.kts at the end of repositories:

	dependencyResolutionManagement {
		repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
		repositories {
			mavenCentral()
			maven { url = uri("https://jitpack.io") }
		}
	}

Add to pom.xml

	<repositories>
		<repository>
		    <id>jitpack.io</id>
		    <url>https://jitpack.io</url>
		</repository>
	</repositories>

Add it in your build.sbt at the end of resolvers:

 
    resolvers += "jitpack" at "https://jitpack.io"

Add it in your project.clj at the end of repositories:

 
    :repositories [["jitpack" "https://jitpack.io"]]

Step 2. Add the dependency

	dependencies {
		implementation 'com.github.games647:fastlogin:1.11'
	}

	dependencies {
		implementation("com.github.games647:fastlogin:1.11")
	}

	<dependency>
	    <groupId>com.github.games647</groupId>
	    <artifactId>fastlogin</artifactId>
	    <version>1.11</version>
	</dependency>


                            
    libraryDependencies += "com.github.games647" % "fastlogin" % "1.11"


                            
    :dependencies [[com.github.games647/fastlogin "1.11"]]

Readme

FastLogin

A shield-shaped emblem with a bold lightning bolt on the left, resembling Minecraft blocks. To the right, "FastLogin" is written in teal, with the tagline: "Automatically detect and login premium Minecraft players"

Checks if a Minecraft player has a paid account (premium). If so, they can skip offline authentication (auth plugins). So they don't need to enter passwords. This is also called auto login (auto-login).

Features

Detect paid accounts from others
Automatically login paid accounts (premium)
Support various of auth plugins
Premium UUID support
Forward skins
Detect username changed and will update the existing database record
BungeeCord/Velocity support
Auto register new premium players
No client modifications needed
Good performance by using async operations
Locale messages
Support for Bedrock players proxies through FloodGate

Issues

Please use issues for bug reports, suggestions, questions and more. Please check for existing issues. Existing issues can be voted up by adding up vote to the original post. Closing issues means that they are marked as resolved. Comments are still allowed and it could be re-opened.

Development builds

Development builds contain the latest changes from the Source-Code. They are bleeding edge and could introduce new bugs, but also include features, enhancements and bug fixes that are not yet in a released version. If you click on the left side on Changes, you can see iterative change sets leading to a specific build.

You can download them from here: CodeMC(Jenkins)

Technical Authentication

sequenceDiagram
    autonumber
    participant C as Client
    participant S as Server
    participant M as Mojang

    C->>S: LOGIN_START (name)
    Note over S: DB: check if username is saved as premium
    S->>C: ENCRYPTION_REQUEST
    Note right of C: Offline clients terminates connection here
    Note right of C: In Offlinemode: LOGIN_SUCCESS is sent directly

    rect rgb(240, 240, 240)
        C->>M: POST /session/minecraft/join
        C->>S: ENCRYPTION_RESPONSE
        Note right of C: Client starts encrypting
    end

    Note over S: Decrypt and verify token
    S->>M: GET /hasJoined (async)
    M->>S: {uuid, name, skin}

    Note over S: Server encrypts traffic
    Note over S: Inject skin and premium UUID
    S->>S: Re-inject LOGIN_START(name)

    S->>C: LOGIN_SUCCESS

Commands

/premium [player] Label the invoker or the argument as paid account
/cracked [player] Label the invoker or the argument as cracked account

Permissions

fastlogin.bukkit.command.premium
fastlogin.bukkit.command.cracked

fastlogin.command.premium.other
fastlogin.command.cracked.other

Placeholder

This plugin supports PlaceholderAPI on Spigot. It exports the following variable %fastlogin_status%. In BungeeCord environments, the status of a player will be delivered with a delay after the player already successful joined the server. This takes about a couple of milliseconds. In this case the value will be Unknown.

Possible values: Premium, Cracked, Unknown

Requirements

Java: 21+ recommended for improved multi-threading code by FastLogin
- Spigot: 8+
- BungeeCord and Velocity: 17+
Server software in offlinemode:
- Spigot (or a fork e.g. Paper) 1.8.8+
  - Protocol plugin:
    - ProtocolLib 5.3+ with development build above 720 or
    - ProtocolSupport
- Latest BungeeCord (or a fork e.g. Waterfall) or Velocity proxy
An auth plugin.

Supported auth plugins

Spigot/Paper

BungeeCord/Waterfall

BungeeAuth

Network requests

This plugin performs network requests to:

https://api.mojang.com - retrieving uuid data to decide if we should activate premium login
https://sessionserver.mojang.com - verify if the player is the owner of that account

How to install

Spigot/Paper

Download and install ProtocolLib/ProtocolSupport
Download and install FastLoginBukkit
Set your server in offline mode by setting the value onlinemode in your server.properties to false

BungeeCord/Waterfall or Velocity

Install the plugin on both platforms, that is proxy (BungeeCord or Velocity) and backend server (Spigot).

Activate proxy support in the server configuration
- This is often found in spigot.yml or paper.yml
Restart the backend server
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
Activate ip forwarding in your proxy config
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: mysql for MySQL/MariaDB
- Velocity: mariadb for MySQL/MariaDB
- Note the embedded file storage SQLite is not available
- MySQL/MariaDB requires an external database server running. Check your server provider if there is one available or install one.
Set proxy and Spigot in offline mode by setting the value onlinemode in your config.yml to false
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