Fix get_advisory_url to handle string file paths

The function now accepts both Path objects and strings for
the `file` and `base_path` parameters, converting strings to
Path objects before calling relative_to().

This fixes the AttributeError that occurred when importers
passed string paths instead of Path objects.

Fixes: #2016

Signed-off-by: Mrityunjay Raj <mr.raj.earth@gmail.com>

Author: mr-raj12

vulnerabilities/utils.py

@@ -18,6 +18,7 @@
 import urllib.request
 from collections import defaultdict
 from functools import total_ordering
+from pathlib import Path
 from http import HTTPStatus
 from typing import List
 from typing import Optional
@@ -543,6 +544,10 @@ def get_advisory_url(file, base_path, url):
     """
     Return the advisory URL constructed by combining the base URL with the relative file path.
     """
+    if isinstance(file, str):
+        file = Path(file)
+    if isinstance(base_path, str):
+        base_path = Path(base_path)
     relative_path = str(file.relative_to(base_path)).strip("/")
     advisory_url = urljoin(url, relative_path)
     return advisory_url