Ejemplo n.º 1
0
func (con Login) Handler(c context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		l := webfw.GetLogger(c)
		sess := webfw.GetSession(c, r)
		renderData := renderer.RenderData{}

		if r.Method == "GET" {
			if v, ok := sess.Flash("form-error"); ok {
				renderData["form-error"] = v
			}
		} else {
			if err := r.ParseForm(); err != nil {
				l.Fatal(err)
			}
			username := data.Login(r.Form.Get("username"))
			password := r.Form.Get("password")

			repo := GetRepo(c)
			conf := GetConfig(c)
			u := repo.UserByLogin(username)

			formError := false
			if u.Err() != nil {
				sess.SetFlash("form-error", "login-incorrect")
				formError = true
			} else if !u.Authenticate(password, []byte(conf.Auth.Secret)) {
				sess.SetFlash("form-error", "login-incorrect")
				formError = true
			} else {
				sess.Set(AuthUserKey, u)
				sess.Set(AuthNameKey, username)
			}

			if formError {
				http.Redirect(w, r, r.URL.String(), http.StatusTemporaryRedirect)
			} else {
				var returnPath string
				if v, ok := sess.Flash("return-to"); ok {
					returnPath = v.(string)
				} else {
					returnPath = webfw.GetDispatcher(c).Pattern
				}
				http.Redirect(w, r, returnPath, http.StatusTemporaryRedirect)
			}
			return
		}
		err := webfw.GetRenderCtx(c, r)(w, renderData, "login.tmpl")
		if err != nil {
			l.Print(err)
		}
	}
}
Ejemplo n.º 2
0
func (con Login) Handler(c context.Context) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		l := webfw.GetLogger(c)
		sess := webfw.GetSession(c, r)
		data := renderer.RenderData{}

		if r.Method == "GET" {
			if v, ok := sess.Flash("form-error"); ok {
				data["form-error"] = v
			}
		} else {
			if err := r.ParseForm(); err != nil {
				l.Fatal(err)
			}
			username := r.Form.Get("username")
			password := r.Form.Get("password")

			db := GetDB(c)

			formError := false
			if u, err := db.GetUser(username); err != nil {
				sess.SetFlash("form-error", "login-incorrect")
				formError = true
			} else if !u.Authenticate(password) {
				sess.SetFlash("form-error", "login-incorrect")
				formError = true
			} else {
				sess.Set(authkey, u)
				sess.Set(namekey, u.Login)
			}

			if formError {
				http.Redirect(w, r, r.URL.String(), http.StatusTemporaryRedirect)
			} else {
				var returnPath string
				if v, ok := sess.Flash("return-to"); ok {
					returnPath = v.(string)
				} else {
					returnPath = webfw.GetDispatcher(c).Pattern
				}
				http.Redirect(w, r, returnPath, http.StatusTemporaryRedirect)
			}
			return
		}
		err := webfw.GetRenderCtx(c, r)(w, data, "login.tmpl")
		if err != nil {
			l.Print(err)
		}
	}
}
Ejemplo n.º 3
0
func (mw Auth) Handler(ph http.Handler, c context.Context, l *log.Logger) http.Handler {
	handler := func(w http.ResponseWriter, r *http.Request) {
		for _, prefix := range mw.IgnoreURLPrefix {
			if prefix[0] == '/' {
				prefix = prefix[1:]
			}

			if strings.HasPrefix(r.URL.Path, mw.Pattern+prefix+"/") {
				ph.ServeHTTP(w, r)
				return
			}
		}

		route, _, ok := webfw.GetDispatcher(c).RequestRoute(r)
		if !ok {
			ph.ServeHTTP(w, r)
			return
		}

		switch ac := route.Controller.(type) {
		case AuthController:
			if !ac.LoginRequired(c, r) {
				ph.ServeHTTP(w, r)
				return
			}

			sess := webfw.GetSession(c, r)

			var u User
			validUser := false
			if uv, ok := sess.Get(authkey); ok {
				if u, ok = uv.(User); ok {
					validUser = true
				}
			}

			if !validUser {
				if uv, ok := sess.Get(namekey); ok {
					if n, ok := uv.(string); ok {
						var err error
						u, err = mw.DB.GetUser(n)

						if err == nil {
							validUser = true
							sess.Set(authkey, u)
						} else if _, ok := err.(ValidationError); !ok {
							l.Print(err)
						}
					}
				}
			}

			if validUser && !u.Active {
				Debug.Println("User " + u.Login + " is inactive")
				validUser = false
			}

			if !validUser {
				d := webfw.GetDispatcher(c)
				sess.SetFlash(CtxKey("return-to"), r.URL.Path)
				path := d.NameToPath("auth-login", webfw.MethodGet)

				if path == "" {
					path = "/"
				}

				http.Redirect(w, r, path, http.StatusMovedPermanently)
				return
			}

		case ApiAuthController:
			if !ac.AuthRequired(c, r) {
				ph.ServeHTTP(w, r)
				return
			}

			var u User
			var err error

			auth := r.Header.Get("Authorization")
			validUser := false

			if auth != "" {
				switch {
				default:
					if !strings.HasPrefix(auth, "Readeef ") {
						break
					}
					auth = auth[len("Readeef "):]

					parts := strings.SplitN(auth, ":", 2)
					login := parts[0]

					u, err = mw.DB.GetUser(login)
					if err != nil {
						l.Printf("Error getting db user '%s': %v\n", login, err)
						break
					}

					var decoded []byte
					decoded, err = base64.StdEncoding.DecodeString(parts[1])
					if err != nil {
						l.Printf("Error decoding auth header: %v\n", err)
						break
					}

					date := r.Header.Get("X-Date")
					t, err := time.Parse(http.TimeFormat, date)
					if err != nil || t.Add(30*time.Second).Before(time.Now()) {
						break
					}

					nonce := r.Header.Get("X-Nonce")
					if !mw.Nonce.Check(nonce) {
						break
					}
					mw.Nonce.Remove(nonce)

					buf := util.BufferPool.GetBuffer()
					defer util.BufferPool.Put(buf)

					buf.ReadFrom(r.Body)
					r.Body = ioutil.NopCloser(buf)

					bodyHash := md5.New()
					if _, err := bodyHash.Write(buf.Bytes()); err != nil {
						l.Printf("Error generating the hash for the request body: %v\n", err)
						break
					}

					contentMD5 := base64.StdEncoding.EncodeToString(bodyHash.Sum(nil))

					message := fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n",
						r.RequestURI, r.Method, contentMD5, r.Header.Get("Content-Type"),
						date, nonce)

					b := make([]byte, base64.StdEncoding.EncodedLen(len(u.MD5API)))
					base64.StdEncoding.Encode(b, u.MD5API)

					hm := hmac.New(sha256.New, b)
					if _, err := hm.Write([]byte(message)); err != nil {
						l.Printf("Error generating the hashed message: %v\n", err)
						break
					}

					if !hmac.Equal(hm.Sum(nil), decoded) {
						l.Printf("Error matching the supplied auth message to the generated one.\n")
						break
					}

					if !u.Active {
						Debug.Println("User " + u.Login + " is inactive")
						break
					}

					validUser = true
				}
			}

			if !validUser {
				w.WriteHeader(http.StatusForbidden)
				return
			}

			c.Set(r, context.BaseCtxKey("user"), u)
		}

		ph.ServeHTTP(w, r)
	}

	return http.HandlerFunc(handler)
}
Ejemplo n.º 4
0
func (mw Auth) Handler(ph http.Handler, c context.Context) http.Handler {
	logger := webfw.GetLogger(c)
	handler := func(w http.ResponseWriter, r *http.Request) {
		for _, prefix := range mw.IgnoreURLPrefix {
			if prefix[0] == '/' {
				prefix = prefix[1:]
			}

			if strings.HasPrefix(r.URL.Path, mw.Pattern+prefix+"/") {
				ph.ServeHTTP(w, r)
				return
			}
		}

		route, _, ok := webfw.GetDispatcher(c).RequestRoute(r)
		if !ok {
			ph.ServeHTTP(w, r)
			return
		}

		repo := GetRepo(c)

		switch ac := route.Controller.(type) {
		case AuthController:
			if !ac.LoginRequired(c, r) {
				ph.ServeHTTP(w, r)
				return
			}

			sess := webfw.GetSession(c, r)

			var u content.User
			validUser := false
			if uv, ok := sess.Get(AuthUserKey); ok {
				if u, ok = uv.(content.User); ok {
					validUser = true
				}
			}

			if !validUser {
				if uv, ok := sess.Get(AuthNameKey); ok {
					if n, ok := uv.(data.Login); ok {
						u = repo.UserByLogin(n)

						if u.HasErr() {
							logger.Print(u.Err())
						} else {
							validUser = true
							sess.Set(AuthUserKey, u)
						}
					}
				}
			}

			if validUser && !u.Data().Active {
				logger.Infoln("User " + u.Data().Login + " is inactive")
				validUser = false
			}

			if !validUser {
				d := webfw.GetDispatcher(c)
				sess.SetFlash(CtxKey("return-to"), r.URL.Path)
				path := d.NameToPath("auth-login", webfw.MethodGet)

				if path == "" {
					path = "/"
				}

				http.Redirect(w, r, path, http.StatusMovedPermanently)
				return
			}

		case ApiAuthController:
			if !ac.AuthRequired(c, r) {
				ph.ServeHTTP(w, r)
				return
			}

			url, login, signature, nonce, date, t := authData(r)

			validUser := false

			var u content.User

			if login != "" && signature != "" && !t.IsZero() {
				switch {
				default:
					u = repo.UserByLogin(data.Login(login))
					if u.HasErr() {
						logger.Printf("Error getting db user '%s': %v\n", login, u.Err())
						break
					}

					decoded, err := base64.StdEncoding.DecodeString(signature)
					if err != nil {
						logger.Printf("Error decoding auth header: %v\n", err)
						break
					}

					if t.Add(30 * time.Second).Before(time.Now()) {
						break
					}

					if !mw.Nonce.Check(nonce) {
						break
					}
					mw.Nonce.Remove(nonce)

					buf := util.BufferPool.GetBuffer()
					defer util.BufferPool.Put(buf)

					buf.ReadFrom(r.Body)
					r.Body = ioutil.NopCloser(buf)

					bodyHash := md5.New()
					if _, err := bodyHash.Write(buf.Bytes()); err != nil {
						logger.Printf("Error generating the hash for the request body: %v\n", err)
						break
					}

					contentMD5 := base64.StdEncoding.EncodeToString(bodyHash.Sum(nil))

					message := fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n",
						url, r.Method, contentMD5, r.Header.Get("Content-Type"),
						date, nonce)

					b := make([]byte, base64.StdEncoding.EncodedLen(len(u.Data().MD5API)))
					base64.StdEncoding.Encode(b, u.Data().MD5API)

					hm := hmac.New(sha256.New, b)
					if _, err := hm.Write([]byte(message)); err != nil {
						logger.Printf("Error generating the hashed message: %v\n", err)
						break
					}

					if !hmac.Equal(hm.Sum(nil), decoded) {
						logger.Printf("Error matching the supplied auth message to the generated one.\n")
						break
					}

					if !u.Data().Active {
						logger.Println("User " + u.Data().Login + " is inactive")
						break
					}

					validUser = true
				}
			}

			if validUser {
				c.Set(r, context.BaseCtxKey("user"), u)
			} else {
				if rej, ok := ac.(AuthRejectHandler); ok {
					rej.AuthReject(c, r)
				} else {
					w.WriteHeader(http.StatusUnauthorized)
					return
				}
			}
		}

		ph.ServeHTTP(w, r)
	}

	return http.HandlerFunc(handler)
}