negroniJWT

JSON Web Token Auth middleware for Negroni.

GoDoc can be found here.

##About

This is some simple middleware for handling JSON Web Token authorization. Token encoding and decoding is done using dgrijalva's jwt-go. Claims from request are retrieved using negroniJWT.Get(r) and uses gorilla's context so it's safe for concurrent use.

Initialization

import(
    "github.com/codegangsta/negroni"
    "github.com/denkyl08/negroniJWT"
)

func main() {
    
    // false means request without a valid token always fails
    // true means that you must check _, ok := negroniJWT.Get(request)
    negroniJWT.Init(false)
    
    n := negroni.Classic()
    n.Use(negroni.HandlerFunc(negroniJWT.Middleware))
    
}

##In Login Controller

    
    err = user.Authenticate()
    if err != nil {
        http.Error(w, err.Error(), 401)
        return
    }
    claims := make(map[string]interface{})
    claims["Username"] = user.Username

    // generate JWT token with encrypted claims
    token, err := negroniJWT.GenerateToken(claims, time.Now().Add(30*time.Minute))
    err = utils.WriteJson(struct {
        Token string
    }{token}, w)

##Retrieve Token claims from request

func ProtectedHandler(w http.ResponseWriter, r *http.Request) {
    token, ok := negroniJWT.Get(r); if !ok {
        http.Error(w, "Error: auth failure", 401)
        return
    }
    ...
}