Redirect the user to their previous page after login/logout.

controllers/auth.js

@@ -49,16 +49,16 @@ exports.auth = function (aReq, aRes, aNext) {
   function auth() {
     var authenticate = null;
 
-    if (strategy === 'google') {
-      authOpts.scope = ['https://www.googleapis.com/auth/userinfo.profile'];
-    }
-    authenticate = passport.authenticate(strategy, authOpts);
-
     // Just in case some dumbass tries a bad /auth/* url
     if (!strategyInstances[strategy]) {
       return aNext();
     }
 
+    if (strategy === 'google') {
+      authOpts.scope = ['https://www.googleapis.com/auth/userinfo.profile'];
+    }
+    authenticate = passport.authenticate(strategy, authOpts);
+
     authenticate(aReq, aRes, aNext);
   }
 
@@ -180,7 +180,7 @@ exports.callback = function (aReq, aRes, aNext) {
         } else {
           // Delete the username that was temporarily stored
           delete aReq.session.username;
-          doneUrl = aReq.session.redirectTo || doneUrl;
+          doneUrl = aReq.session.redirectTo;
           delete aReq.session.redirectTo;
           return aRes.redirect(doneUrl);
         }

controllers/index.js

@@ -8,6 +8,7 @@ var isDbg = require('../libs/debug').isDbg;
 //
 var async = require('async');
 var _ = require('underscore');
+var url = require('url');
 
 var Discussion = require('../models/discussion').Discussion;
 var Group = require('../models/group').Group;
@@ -151,13 +152,30 @@ exports.home = function (aReq, aRes) {
   async.parallel(tasks, asyncComplete);
 };
 
+// Get the referer url for redirect after login/logout
+function getRedirect(aReq) {
+  var referer = aReq.get('Referer');
+  var redirect = '/';
+
+  if (referer) {
+    referer = url.parse(referer);
+    if (referer.hostname === aReq.hostname) {
+      redirect = referer.path;
+    }
+  }
+
+  return redirect;
+}
+
 // UI for user registration
 exports.register = function (aReq, aRes) {
   var authedUser = aReq.session.user;
 
   // If already logged in, goto the front page.
-  if (authedUser)
-    return aRes.redirect('/');
+  if (authedUser) {
+    return aRes.redirect(getRedirect(aReq));
+  }
+  aReq.session.redirectTo = getRedirect(aReq);
 
   //
   var options = {};
@@ -225,12 +243,13 @@ exports.register = function (aReq, aRes) {
 
 exports.logout = function (aReq, aRes) {
   var authedUser = aReq.session.user;
+  var redirectUrl = getRedirect(aReq);
 
-  if (!authedUser) { return aRes.redirect('/'); }
+  if (!authedUser) { return aRes.redirect(redirectUrl); }
 
   User.findOne({ _id: authedUser._id }, function (aErr, aUser) {
     removeSession(aReq, aUser, function () {
-      aRes.redirect('/');
+      aRes.redirect(redirectUrl);
     });
   });
 };