Config Cloud Backuper

A simple Minecraft mod for backing up game configuration files, with configurable backup paths and WebDAV cloud backup support for both client and server usage.

Features

Client + server command support — both sides can use commands; server also supports /server_config_backuper ... (requires Fabric API)
Client-to-server upload — clients can upload local backups to server storage; files are saved per player and retention is configurable
Optional GUI — install ModMenu and Cloth Config API, then open settings from ModMenu
Backup game configs, mod configs, shader configs, and more folders (see config/config-cloud-backuper.json)
Backup compression and automatic old-backup cleanup
WebDAV — auto upload after backup (if enabled), plus manual list/upload/download commands
Security checks — client upload only accepts .zip with size limit and filename sanitization; server validates SHA-256 and writes audit logs

Requirements

Minecraft 1.21.1
Fabric Loader >=0.16.0
Java 21+
Fabric API (required for command registration)
ModMenu (optional)
Cloth Config API (optional, needed only for ModMenu GUI)

Commands (Client/Server)

Commands are grouped under: remote cloud / remote server.

Root command prefixes (kept for compatibility):

Client: /config_backuper
Server: /config_backuper or /server_config_backuper (same functionality)

> Note: The command prefix is intentionally kept for backward compatibility with existing scripts and habits. A cloud-style prefix can be introduced later in a major release with alias transition.

Subcommand	Description
`backup`	Run local backup and clean old files exceeding `maxBackups`; if WebDAV auto-upload is enabled, upload the latest backup afterward
`list`	List local backup files matching configured prefix/suffix
`config reload`	Reload `config-cloud-backuper.json` from disk and refresh runtime instances
`config show`	Show current main config values
`config set <key> <value>`	Update and save main config (`true`/`false` etc. are supported for booleans)
`remote cloud status`	Show WebDAV config (password masked)
`remote cloud list`	List files in remote WebDAV directory
`remote cloud upload [file]`	Force upload local backup file (latest by default) to WebDAV; credentials are still required
`remote cloud download [file]`	Download remote file into local backup directory (latest by name by default)
`remote cloud set <field> <value>`	Write fields in `config-cloud-backuper_webdav.json`: `enabled`, `serverUrl`, `username`, `password`, `remotePath`
`remote server status`	(Client) Query server-side client-upload config
`remote server list`	(Client) Query current player's uploaded backups on server
`remote server upload [file]`	(Client) Upload local backup to server (latest by default)

Running root command without subcommand prints brief help.

Server Examples

/server_config_backuper backup: run server backup
/server_config_backuper list: list server local backups
/server_config_backuper config show: show current server config
/server_config_backuper remote server status: show client-upload config
/server_config_backuper remote server list: show your uploaded backups (requires OP level > 2)
/server_config_backuper remote server set folder ./configcloudbackuper-backups/client-uploads: set upload root folder
/server_config_backuper remote server set maxPerPlayer 20: set max backups per player

Configuration

Main config: config/config-cloud-backuper.json
WebDAV config: config/config-cloud-backuper_webdav.json

You can also edit values with config / remote cloud / remote server commands above.

General and Backup Storage

Main fields include: includeGameConfigs, includeModConfigs, includeShaderPackConfigs, includeSchematics, include3dSkin, includeSyncmatics, includeDefaultConfigs, compressionEnabled, maxBackups, backupFolder, backupFilePrefix, backupFileSuffix.

Client Upload to Server (main config fields)

clientUploadToServerEnabled: allow client uploads to server (default true)
clientUploadFolder: server storage root for uploaded backups (default ./configcloudbackuper-backups/client-uploads)
clientUploadMaxBackupsPerPlayer: max backups per player (-1 means unlimited, default 10)

Server storage structure:

<clientUploadFolder>/<playerName>/<backupFile>

WebDAV (`config-cloud-backuper_webdav.json`)

enabled — auto upload latest backup after local backup flow
serverUrl, username, password, remotePath — server and path settings

WebDAV security behavior:

Upload also writes checksum file: <filename>.sha256
Download reads .sha256 first, then verifies SHA-256 after download; mismatch deletes the file and returns error

Modpack Usage

You may freely include this mod in modpacks without requesting permission.

Development

Build

cd fabric
./gradlew build

For local client testing with ModMenu + Cloth GUI, this repo already includes Cloth via modLocalRuntime. You still need to add ModMenu in your run profile (or modRuntimeOnly).

Config-Cloud-Backuper

Cloth Config API (Fabric/Forge/NeoForge)

Fabric API

Mod Menu