Goth is a web authentication system written in Go. With Goth, you get out-of- the-box user sign in, sign up, and sign out functionality to kick off building your web app.

Not ready for production yet! Use at your own risk. File bugs, pitch in, etc.

go get github.com/jroes/goth

The following example mounts goth's authentication handler at /auth/, and registers a simple handler for the root route that greets the user with the user's e-mail address if logged in, or as a guest if not.

package main

import (
	"fmt"
	"net/http"
)

import (
	"github.com/jroes/goth"
)

var authHandler = goth.DefaultAuthHandler

func main() {
	http.Handle("/auth/", authHandler)
	http.HandleFunc("/", helloUserHandler)

	// Please use ListenAndServeTLS in production.
	http.ListenAndServe(":8080", nil)
}

func helloUserHandler(w http.ResponseWriter, r *http.Request) {
	currentUser, ok := authHandler.CurrentUser(r)
	if ok {
		fmt.Fprintf(w, "Hello, %s!", currentUser.Email)
	} else {
		fmt.Fprintf(w, "Hello, guest!")
	}
}

So what does this get you exactly? You get a bunch of routes underneath /auth/: