Created
November 28, 2016 23:22
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package main | |
import ( | |
"fmt" | |
"github.com/gorilla/securecookie" | |
"golang.org/x/crypto/bcrypt" | |
"log" | |
"net/http" | |
"time" | |
) | |
const cookieName = "mycookiename" | |
var hashKey = []byte(securecookie.GenerateRandomKey(32)) | |
var blockKey = []byte(securecookie.GenerateRandomKey(32)) | |
var sc = securecookie.New(hashKey, blockKey) | |
func checkAuth(h http.HandlerFunc) http.HandlerFunc { | |
return func(w http.ResponseWriter, r *http.Request) { | |
if ReadCookieHandler(r) { | |
h.ServeHTTP(w, r) | |
} else { | |
log.Printf("Not authorized %s", 401) | |
} | |
h.ServeHTTP(w, r) | |
} | |
} | |
func identifyUserFromForm(r *http.Request) User { | |
err := r.ParseForm() | |
email := r.Form.Get("email") | |
password := r.Form.Get("password") | |
du := User{} | |
u, err := du.FindOneUserByEmail(email) | |
if err != nil { | |
log.Fatal(err) | |
} else { | |
passwordPlainText := []byte(fmt.Sprintf("%s%s", u.Password_salt, password)) | |
err = bcrypt.CompareHashAndPassword([]byte(u.Password_hash), []byte(passwordPlainText)) | |
if err == nil { | |
log.Printf("user %s auth ok\n", u.Email) | |
return u | |
} | |
} | |
return du | |
} | |
func GenerateBcryptHash(s string, p string) ([]byte, error) { | |
fmt.Printf("user auth: %s %s", s, p) | |
password := []byte(fmt.Sprintf("%s%s", s, p)) | |
return bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost) | |
} | |
func CompareBcryptHash(hash []byte, password string) error { | |
return bcrypt.CompareHashAndPassword([]byte(password), hash) | |
} | |
func SetCookieHandler(w http.ResponseWriter, r *http.Request, u User) { | |
value := map[string]string{ | |
"id": u.Id, | |
} | |
log.Printf("set cookie: %s\n", u.Id) | |
if encoded, err := sc.Encode(cookieName, value); err == nil { | |
cookie := &http.Cookie{ | |
Name: cookieName, | |
Value: encoded, | |
Path: "/", | |
} | |
http.SetCookie(w, cookie) | |
} | |
} | |
func ReadCookieHandler(r *http.Request) bool { | |
log.Printf("cookie name: %#s\n", cookieName) | |
if cookie, err := r.Cookie(cookieName); err == nil { | |
value := make(map[string]string) | |
if err = sc.Decode(cookieName, cookie.Value, &value); err == nil { | |
log.Printf("cookie: %#s\n", cookie) | |
return true | |
} | |
log.Printf("cookie: %#s\n", cookie) | |
} | |
return false | |
} |
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