sharing: add hook for simple calls

radicale/app/delete.py

@@ -58,6 +58,14 @@ class ApplicationPartDelete(ApplicationBase):
                   path: str, user: str, remote_host: str, remote_useragent: str) -> types.WSGIResponse:
         """Manage DELETE request."""
         permissions_filter = None
+        if self._sharing._enabled:
+            # Sharing by token or map (if enabled)
+            sharing = self._sharing.sharing_collection_resolver(path, user)
+            if sharing:
+                # overwrite and run through extended permission check
+                path = sharing['PathMapped']
+                user = sharing['Owner']
+                permissions_filter = sharing['Permissions']
         access = Access(self._rights, user, path, permissions_filter)
         if not access.check("w"):
             return httputils.NOT_ALLOWED