Bring in the list APIs implemented by Bala <bala@minio.io>

jwt-auth-handler.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/dgrijalva/jwt-go"
+)
+
+type authHandler struct {
+	handler http.Handler
+}
+
+// AuthHandler -
+// Verify if authorization header has signature version '2', reject it cleanly.
+func AuthHandler(h http.Handler) http.Handler {
+	return authHandler{h}
+}
+
+// Ignore request if authorization header is not valid.
+func (h authHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	// Let the top level caller handle if the requests should be
+	// allowed.
+	if r.Header.Get("Authorization") == "" {
+		h.handler.ServeHTTP(w, r)
+		return
+	}
+	authBackend := InitJWT()
+	token, err := jwt.ParseFromRequest(r, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		return authBackend.PublicKey, nil
+	})
+	if err != nil || !token.Valid {
+		w.WriteHeader(http.StatusUnauthorized)
+		return
+	}
+	h.handler.ServeHTTP(w, r)
+}