detect mobileclient

src/c3nav/site/middleware.py

@@ -5,6 +5,30 @@ class MobileclientMiddleware:
     def __init__(self, get_response):
         self.get_response = get_response
 
+    @staticmethod
+    def is_mobileclient(request):
+        if 'fakemobileclient' in request.GET:
+            return True
+
+        user_agent = request.META.get('HTTP_USER_AGENT', '')
+        if not user_agent.startswith('c3navClient/'):
+            return False
+
+        user_agent = user_agent[12:].split('/')
+        if len(user_agent) != 2:
+            return False
+
+        app_platform, app_version = user_agent
+        if app_platform == 'Android':
+            # activate new mobileclient features for the c3nav android app 4.0.0 or higher
+            # yep, iphone app can do this stuff yet
+            if not app_version.isdigit():
+                return False
+            app_version = int(app_version)
+            return app_version >= 14040000
+
+        return False
+
     def __call__(self, request):
-        request.mobileclient = 'c3navclient' in request.META['HTTP_USER_AGENT'] or 'fakemobileclient' in request.GET
+        request.mobileclient = self.is_mobileclient(request)
         return self.get_response(request)