server

Goupfile

Goupfile is a file sharing service.

Features

What makes this one different?

• Share multiple files under one URL
• URLs are short, memorable, and don't have ambiguous characters
• QR codes so that you can upload files on one device and easily access them on another
• Upload from any browser at goupfile.johnjago.com
• There's a CLI tool for uploading files from the terminal
• No dependencies: it uses a SQLite database and saves files to the local filesystem
• Easy to deploy: just download a single binary and run
• Lightweight: runs on any machine in the cloud

HTTP API

GET    /                   Show the home page and upload/download from there
POST   /upload             Upload a file (use multipart/form-data)
GET    /d/{id}             Download a file
GET    /v/{id}             View file download page

Configuration

In main.go, there is a block where you can configure Goupfile. For example, you can change the directory where uploaded files are stored.

const (
	port       = ":8090"
	staticDir  = "./public"
	driver     = "sqlite3"
	dataSource = "sqlite_db"
	// This is only for generating the QR code from a URL since when it's
	// running behind nginx, for example, it doesn't know what the outside
	// facing hostname is unless we tell it. A real setup might look like:
	// this program running on localhost:8090, but nginx accepts requests at
	// https://file.com, in which case the below value would be https://file.com
	publicHost = "https://goupfile.johnjago.com"
)

These probably should be moved to environment variables.

Proxying though nginx

It's common to proxy requests through a server like nginx. This allows you to simply run Goupfile on something like http://localhost:8090 and have nginx take care of the public facing TLS, hostname, and other configuration.

One configuration that's useful to adjust for an application like Goupfile is client_max_body_size which allows you to specify a limit on how large an uploaded file can be.

server {
	server_name          goupfile.johnjago.com;
	listen               *:80;
	listen               [::]:80;

	return 301 https://goupfile.johnjago.com$request_uri;
}

server {
	listen [::]:443 ssl http2;
	listen 443 ssl http2;

	ssl_certificate /path/to/cert;
	ssl_certificate_key /path/to/private/key;

	include /etc/letsencrypt/options-ssl-nginx.conf;
	ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

	client_max_body_size 10M;

	location / {
		proxy_pass http://localhost:8090;
	}
}

Developing

Clone the repository:

git clone git@github.com:goupfile/server.git

Then run the server from the root of the project:

go run -v ./...

or

make run

To automatically build and run the project every time a file changes, you can use a tool like gow.

Docker

Using Docker, you can build and run Goupfile without having Go installed and without gcc (since mattn/go-sqlite3 is a cgo package and relies on gcc).

If you don't already have it, install Docker Engine.

git clone git@github.com:goupfile/server.git
cd server
npm install && npm run css-prod
docker build . -t goupfile
docker container run -p 8090:8090 goupfile

CSS

This project uses Tailwind CSS. The following will create a CSS file with all Tailwind classes, which is helpful in development because you can use any Tailwind CSS utility. The file produced by css-dev is over 3 MB, so don't use it in production!

npm install
npm run css-dev

For a production build,

npm run css-prod

This will produce a CSS file with only the classes you used in the HTML.

Database notes

Goupfile currently uses SQLite as its database. SQLite has an overview of use cases where it works well, and right now it's a good choice for Goupfile. However, with many concurrent writes or large numbers of files that don't fit on a single VM's disk, there may be issues. In that case, it's almost trivial to swap out SQLite for PostgreSQL or MariaDB. Just change the driver and dataSource in main.go.

Screenshots

License

MIT