From b27a7914993f5a5a87160dc33431a6fa1f4ad323 Mon Sep 17 00:00:00 2001
From: Joris Guyonvarch
Date: Sat, 18 Jul 2015 17:36:35 +0200
Subject: Securing the index page with the login session

---
 src/server/Application.hs | 13 +++++++++----
 src/server/Main.hs        |  4 ++--
 src/server/Secure.hs      | 23 +++++++++++++++++++++++
 3 files changed, 34 insertions(+), 6 deletions(-)
 create mode 100644 src/server/Secure.hs

diff --git a/src/server/Application.hs b/src/server/Application.hs
index 377d1ff..b83273f 100644
--- a/src/server/Application.hs
+++ b/src/server/Application.hs
@@ -28,14 +28,19 @@ import qualified Data.Text.Lazy as TL
 
 import qualified LoginSession
 
+import qualified Secure
+
 import Model.Database (runDb)
 import Model.User
 import Model.Payment
 
 import View.Page (page)
+
 getIndexAction :: ActionM ()
-getIndexAction = do
-  html $ page
+getIndexAction =
+  Secure.loggedAction (\_ ->
+    html $ page
+  )
 
 getUsersAction :: ActionM ()
 getUsersAction = do
@@ -69,8 +74,8 @@ insertPaymentAction email name cost = do
       html "Not found"
 
 signIn :: Text -> ActionM ()
-signIn value = do
-  LoginSession.put value
+signIn login = do
+  LoginSession.put login
   html "Ok"
 
 checkConnection :: ActionM ()
diff --git a/src/server/Main.hs b/src/server/Main.hs
index 69de885..f73f2e0 100644
--- a/src/server/Main.hs
+++ b/src/server/Main.hs
@@ -32,8 +32,8 @@ main = do
       insertPaymentAction email name cost
 
     get "/signIn" $ do
-      email <- param "email" :: ActionM Text
-      signIn email
+      login <- param "login" :: ActionM Text
+      signIn login
 
     get "/checkConnection" $
       checkConnection
diff --git a/src/server/Secure.hs b/src/server/Secure.hs
new file mode 100644
index 0000000..94ee8a9
--- /dev/null
+++ b/src/server/Secure.hs
@@ -0,0 +1,23 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Secure
+  ( loggedAction
+  ) where
+
+import Web.Scotty
+
+import Network.HTTP.Types.Status (forbidden403)
+
+import Data.Text (Text)
+
+import qualified LoginSession
+
+loggedAction :: (Text -> ActionM ()) -> ActionM ()
+loggedAction action = do
+  maybeLogin <- LoginSession.get
+  case maybeLogin of
+    Just login ->
+      action login
+    Nothing -> do
+      status forbidden403
+      html "You need to be logged in to perform this action"
-- 
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