improve (login): redirect the user to the login screen once the session expire

client/model/files.js

@@ -98,6 +98,9 @@ class FileSystem{
                 return store;
             });
         }).catch((_err) => {
+            if(_err.code === "Unauthorized"){
+                location = "/login?next="+location.pathname;
+            }
             this.obs.next(_err);
             return Promise.reject(null);
         });

client/pages/connectpage.js

@@ -23,7 +23,10 @@ export class ConnectPage extends React.Component {
 
     componentWillMount(){
         const urlData = urlParams();
-        if(Object.keys(urlData).length === 0){
+        const get_params = Object.keys(urlData);
+        if(get_params.length === 0){
+            return;
+        }else if(get_params.length === 1 && !!urlData["next"]){
             return;
         }
 
@@ -40,6 +43,9 @@ export class ConnectPage extends React.Component {
         Session.authenticate(params)
             .then(Session.currentUser)
             .then((user) => {
+                if(location.search.indexOf("?next=") === 0){
+                    location = urlParams()["next"];
+                }
                 let url = '/files/';
                 let path = user.home;
                 if(path){

server/common/error.go

@@ -19,6 +19,7 @@ var (
 	ErrNotImplemented         = NewError("Not Implemented", 501)
 	ErrFilesystemError        = NewError("Can't use filesystem", 503)
 	ErrMissingDependency      = NewError("Missing dependency", 424)
+	ErrNotAuthorized          = NewError("Not authorized", 401)
 )
 
 type AppError struct {

server/middleware/session.go

@@ -59,6 +59,10 @@ func SessionStart (fn func(App, http.ResponseWriter, *http.Request)) func(ctx Ap
 			return
 		}
 		if ctx.Backend, err = _extractBackend(req, &ctx); err != nil {
+			if len(ctx.Session) == 0 {
+				SendErrorResult(res, ErrNotAuthorized)
+				return
+			}
 			SendErrorResult(res, err)
 			return
 		}