Added a session_timeout setting to manage session lifetime

app/models.py

@@ -1808,6 +1808,7 @@ class Setting(db.Model):
         'allow_user_create_domain': False,
         'bg_domain_updates': False,
         'site_name': 'PowerDNS-Admin',
+        'session_timeout': 10,
         'pdns_api_url': '',
         'pdns_api_key': '',
         'pdns_version': '4.1.1',

app/views.py

@@ -3,6 +3,7 @@ import logging as logger
 import os
 import traceback
 import re
+import datetime
 from distutils.util import strtobool
 from distutils.version import StrictVersion
 from functools import wraps
@@ -68,6 +69,11 @@ def before_request():
     if maintenance and current_user.is_authenticated and current_user.role.name not in ['Administrator', 'Operator']:
         return render_template('maintenance.html')
 
+    # Manage session timeout
+    session.permanent = True
+    app.permanent_session_lifetime = datetime.timedelta(minutes=int(Setting().get('session_timeout')))
+    session.modified = True
+    g.user = current_user
 
 @login_manager.user_loader
 def load_user(id):