ModSync

Why should you use ModSync?

ModSync is a client-server setup that adds transparency to the client's Mods and Texture packs.

Here are more ways ModSync might turn out helpful:

• Anti-Cheat: Instead of the server running continuous checks for cheats, ModSync presents a 1 time check solution. ModSync doesn't just check your mod directory; It checks all the threads running inside Minecraft.

• Auto-Authorisation: No need for fancy auth plugins, ModSync generates a unique authorisation key for every device. This will link with the player's username once he joins the server. If someone with a different key tries to log in with the user's account, ModSync will kick them for a mismatched auth key.

• Modlist & Packlist: All the Mods and Texture packs installed on the client will be listed in the username's log file.

• Screenshot Player's Gamescreen: Admins can use a command to take a screenshot of screenshots of players gamescreen to ensure texture pack legitimacy. (mainly used to detect Xray packs)

🛡️ Core Security

ModSync doesn't just "ask" the client for a list; it uses a secure challenge-response handshake:

Dynamic Hashing: Every handshake is secured with SHA-512 using a server-side pepper and a unique challenge UUID to prevent packet spoofing.

Privacy-First: Players are prompted to agree to data reporting on their first join, ensuring compliance with privacy standards.

⚙️ Technical Features

Categorized Resource Reporting: Unlike basic list-reporters, ModSync distinguishes between Active (enabled), Inactive (in folder), and Deleted resource packs.

Intelligent Mod Consolidation: Automatically collapses library dependencies (like fabric-api sub-modules) into single entries to keep admin modlists readable.

Historical Audit Logs: Every player gets a dedicated .yml log tracking their mod/pack history across sessions—including timestamps of when a mod was removed.

Remote Diagnostics: Admins can request remote screenshots or even "dump" specific mod/pack files directly from a client to verify suspicious files.

Bedrock Support: Native compatibility with Geyser/Floodgate to skip verification for Bedrock players while maintaining strict security for Java players.

💻 Commands

/modsync modlist – View all installed mods (filtered to remove library noise).

/modsync packlist – View active vs. inactive resource packs.

/modsync screenshot – Request a secure remote screenshot.

/modsync dump <mod|pack> – Download a specific file from the player's client for inspection.

/modsync authreset – Reset the hardware ID link for a player.

/modsync reload – Hot-reload all configurations and banned/required lists.

🚀 Setup

1. Install the Plugin on your Spigot/Paper server.
2. Install the Mod on your Fabric client.
3. Configure your required-mods and banned-mods in the server's config.yml.

Developed by Dark_Yoddha — Built for Integrity.