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).