added check for user in welcome controller,

redirecting to home page

app/controllers/welcome.js

@@ -39,9 +39,7 @@ class WelcomeController extends SiteController {
   }
 
   async getWelcomeCoreMember (req, res) {
-    if (req.user) {
-      res.redirect(301, '/');
-    }
+    await this.checkForUser(req, res);
     res.render('welcome/core-member');
   }
 
@@ -61,32 +59,33 @@ class WelcomeController extends SiteController {
   }
 
   async getSignupView (req, res) {
-    if (req.user) {
-      res.redirect(301, '/');
-    }
+    await this.checkForUser(req, res);
     req.session.captcha = req.session.captcha || { };
     req.session.captcha.signup = captcha.randomText(4 + Math.floor(Math.random()*4));
     res.render('welcome/signup');
   }
 
   async getLoginView (req, res) {
-    if (req.user) {
-      res.redirect(301, '/');
-    }
+    await this.checkForUser(req, res);
     res.locals.loginResult = req.session.loginResult;
     res.render('welcome/login');
   }
 
   async getHomeView (req, res, next) {
     try {
-      if (req.user) {
-        res.redirect(301, '/');
-      }
+      await this.checkForUser(req, res);
       res.render('welcome/index');
     } catch (error) {
       return next(error);
     }
   }
+ 
+  async checkForUser (req, res) {
+    if (req.user) {
+      res.redirect(301, '/');
+    }
+  }
+
 }
 
 module.exports = {