island: Split has_expected_permissions() into os-specific functions

monkey/monkey_island/cc/server_utils/file_utils.py

@@ -9,6 +9,19 @@ def expand_path(path: str) -> str:
 
 def has_expected_permissions(path: str, expected_permissions: int) -> bool:
     if is_windows_os():
+        return _has_expected_windows_permissions(path, expected_permissions)
+
+    return _has_expected_linux_permissions(path, expected_permissions)
+
+
+def _has_expected_linux_permissions(path: str, expected_permissions: int) -> bool:
+    file_mode = os.stat(path).st_mode
+    file_permissions = file_mode & 0o777
+
+    return file_permissions == expected_permissions
+
+
+def _has_expected_windows_permissions(path: str, expected_permissions: int) -> bool:
     # checks that admin has any permissions, user has `expected_permissions`,
     # and everyone else has no permissions
 
@@ -45,9 +58,3 @@ def has_expected_permissions(path: str, expected_permissions: int) -> bool:
                 return False
 
     return True
-
-    else:
-        file_mode = os.stat(path).st_mode
-        file_permissions = file_mode & 0o777
-
-    return file_permissions == expected_permissions