serve static files / directory with http basic auth in Go

static-file-server.go

/*
Simple static file server with http basic auth in go
Usage:
	-p="8100": port to serve on
	-d=".":    the directory of static files to host

Navigating to http://localhost:8100 will display the index.html or directory
listing file.
*/

package main

import (
	"flag"
	"log"
	"net/http"
	auth "github.com/abbot/go-http-auth"
)

//Secret ...
//Use https://unix4lyfe.org/crypt to generate an md5 hash + salt
func Secret(user, realm string) string {
	switch user {
	case "kitallis":
		return "$1$eq9ct8Co$gR4Oluc5k4xVQFJPEnr9Y." // password is "hello"
	case "guest":
		return "$1$wZRWVGXc$wTmEmVCZFpNt2Xt3Fwdxl0" // password is "R#A?hx<MzU6F:pj5"
	default:
		return ""
	}
}

func main() {
	port := flag.String("p", "8100", "port to serve on")
	directory := flag.String("d", ".", "the directory of static file to host")
	flag.Parse()

	authenticator := auth.NewBasicAuthenticator("baitai", Secret)
	http.HandleFunc("/", authenticator.Wrap(func(w http.ResponseWriter, r *auth.AuthenticatedRequest) {
		http.FileServer(http.Dir(*directory)).ServeHTTP(w, &r.Request)
	}))

	log.Printf("Serving %s on HTTP port: %s\n", *directory, *port)
	log.Fatal(http.ListenAndServe(":"+*port, nil))
}