Add login_required decorator

tools/utils.py

@@ -1,4 +1,5 @@
-from flask import Flask
+from flask import Flask,  url_for, session, redirect, request
+from functools import wraps
 import sqlite3
 import os
 import string
@@ -14,6 +15,17 @@ DATABASE = app.config['DATABASE']
 DOSSIER_PERSO = app.config['DOSSIER_APP']
 DATABASE = app.config['DATABASE']
 
+
+def login_required(f):
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        if 'username' not in session:
+            return redirect(url_for('loginlogout.login', next=request.url))
+        return f(*args, **kwargs)
+    return decorated_function
+
+
+
 def append_to_log(log_line, user):
     log_file=os.path.join(DOSSIER_PERSO, user, "log.txt")
     logs=open(log_file, "r")