fix security check

changedetectionio/processors/__init__.py

@@ -1,6 +1,7 @@
 from abc import abstractmethod
 import os
 import hashlib
+import re
 from copy import deepcopy
 
 from changedetectionio import content_fetcher
@@ -18,6 +19,12 @@ class difference_detection_processor():
         self.datastore = datastore
         self.watch = deepcopy(self.datastore.data['watching'].get(watch_uuid))
 
+        # Protect against file:// access
+        if re.search(r'^file', self.watch.get('url', ''), re.IGNORECASE) and not os.getenv('ALLOW_FILE_URI', False):
+            raise Exception(
+                "file:// type access is denied for security reasons."
+            )
+
 
     def call_browser(self):
 

changedetectionio/processors/text_json_diff.py

@@ -44,12 +44,6 @@ class perform_site_check(difference_detection_processor):
         if not watch:
             raise Exception("Watch no longer exists.")
 
-        # Protect against file:// access
-        if re.search(r'^file', watch.get('url', ''), re.IGNORECASE) and not os.getenv('ALLOW_FILE_URI', False):
-            raise Exception(
-                "file:// type access is denied for security reasons."
-            )
-
         # Unset any existing notification error
         update_obj = {'last_notification_error': False, 'last_error': False}