69 lines
3.0 KiB
Markdown
69 lines
3.0 KiB
Markdown
# KumOS
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A browser-based desktop operating system. Login, windows, taskbar, files, apps — all running in your browser.
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Built as a learning project around an intentionally unconventional stack: a PureBasic / FastCGI / SQLite backend, with a SpiderBasic frontend that compiles to plain JavaScript and HTML5.
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## Features
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- Multi-user authentication (salted SHA-256, session cookies)
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- Virtual filesystem with SQLite metadata and on-disk blobs, plus per-user home directories and a shared space
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- Window manager with taskbar, start menu, and notifications
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- Built-in apps: File Explorer, Text Editor, Settings, Web Browser, App Manager
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- Third-party app platform with sandboxed iframes, manifest-based permissions, and JS + SpiderBasic SDKs
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- Client-side IndexedDB cache with dirty tracking and background sync
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## Stack
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- **Server** - PureBasic 6.30, FastCGI, SQLite
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- **Client** - SpiderBasic 3.20 (compiles to JS/HTML5)
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- **Dev environment** - Podman + nginx, or the built-in `WebServer.pbi` for debug builds
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## Layout
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```
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Server/
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Main.pb Entry point
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Includes/ Auth, Database, FileSystem, AppStore, Router
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Libraries/ FastCGI, WebServer (debug only)
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Client/
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Main.sb Entry point
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Includes/ Desktop, Login, FS, FileCache, AppRuntime, Notify
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Default Apps/ FileExplorer, TextEditor, Settings, WebBrowser, AppManager
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Libraries/ IDB
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kumos.js Third-party app SDK
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```
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## Building
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**Server.** Open `Server/KUMOS Server.pbp` in PureBasic, build and run. The first launch creates `kumos.db`, the `blobs/` and `apps/` directories, and a default `admin / admin` account; change the password immediately. The FastCGI listener defaults to port 9683.
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**Client.** Open `Client/KUMOS.sbp` in SpiderBasic and build. Output goes to `Server/www/`.
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**Debug.** A debug build of the server also starts an HTTP server on port 8080 that proxies `/api/*` to FastCGI and serves `www/` directly; no http server needed. Visit `http://localhost:8080/`.
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**Production.** Run nginx (or any web server) in front, serving `www/` statically and forwarding `/api/*` to `127.0.0.1:9683` over FastCGI.
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## Third-party apps
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Apps are zip bundles containing a `manifest.json` and an entry HTML. Install via the App Manager UI, or POST a URL to `/api/apps/install`. Apps run in iframes without `allow-same-origin`, communicate with the shell via postMessage, and use the `kumos.js` SDK for storage, filesystem, and notifications. Permissions are declared in the manifest and enforced by the runtime.
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A minimal manifest:
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```json
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{
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"id": "com.example.helloworld",
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"name": "Hello World",
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"version": "1.0",
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"icon": "👋",
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"entry": "index.html",
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"permissions": ["notify", "fs.write"]
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}
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```
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## Status
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It goes without saying that this is a joke project (despite the crazy efforts I put in). I won't fix anything, I won't add any feature, it's already very close to imploding as it is.
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