DiscordAuth

DiscordAuth is a Velocity plugin that links Minecraft accounts with Discord accounts for authentication.

Installation

1. Place the discordauth-<version>.jar file in your Velocity plugins folder.

Configuration

When you run the plugin for the first time, it will generate:

plugins/discordauth/config.properties

Edit the file and fill in the following:

discord.token=YOUR_DISCORD_BOT_TOKEN_HERE
discord.guildId=123456789012345678
discord.roleId=987654321098765432
discord.adminId=000000000000000000
security.maxFailures=3
security.blockMinutes=5
integration.lom.allowedUsersPath=plugins/limited-offline-mode/allowed-users.txt

• Create a Discord bot and obtain its token (search online for instructions).
• IDs can be obtained from Discord with Developer Mode enabled.

Required Discord Bot Permissions

Bot

• Server Members Intent
• Message Content Intent

OAuth2

• bot
  • Send Messages
  • Manage Roles

Usage

1. When a player connects to Velocity and is not yet verified, a 6-digit verification code will be generated in-game.
2. The player sends the following command via DM to the Discord bot:

!verify <verification code>

3. If the user has the specified server and role in config.properties, their Minecraft account will be linked with their Discord account.
4. Subsequent connections do not require verification.

Admin Commands

!delete <DiscordID>

• Can only be executed by the user specified in adminId.
• If successful, the following occurs automatically:
  • The player is disconnected from Velocity.
  • The role is removed from the user in the Discord server.

Integrations

Limited Offline Mode

This plugin is designed to integrate with the Limited Offline Mode plugin.

When enabled, players listed in LOM's allowed-users.txt can bypass Discord verification, even when the proxy is in online-mode. This is useful for allowing specific accounts (like camera bots or test accounts) to join without needing a Discord account, while still enforcing verification for all other online players.

To enable this, set the path to LOM's allowed-users.txt in your config.properties. If this path is left empty, the integration is disabled.

Security

• This plugin is designed to run on a Velocity proxy set to online-mode=true.
• Integration with Limited Offline Mode: For securely allowing specific offline accounts, this plugin can integrate with Limited Offline Mode. See the "Integrations" section for details.
• IP Blocking: To prevent brute-force attacks, verification failures are counted per IP. After a configurable number of failures (default: 3), the IP is temporarily blocked (default: 5 minutes).

Data Storage

Verified accounts are saved in:

plugins/discordauth/verified.json

This file is automatically updated when commands succeed via DM with the bot.

License

MIT License