python/grass/utils: fix checking server response content type/dispost…

…ion header (#4658)

To allow to download ZIP file.

Server response headers which indicating ZIP file:

content-type: application/octet-stream
content-disposition: attachment; filename=natural_earth_dataset.zip

Fix download Natural Earth Dataset in WGS84 from the server URL
https://zenodo.org/records/13370131/files/natural_earth_dataset.zip

python/grass/utils/download.py

@@ -13,6 +13,7 @@
 """Download and extract various archives"""
 
 import os
+import re
 import shutil
 import tarfile
 import tempfile
@@ -23,6 +24,10 @@
 from urllib.request import urlretrieve
 
 
+reponse_content_type_header_pattern = re.compile(r"application/(zip|octet-stream)")
+reponse_content_disposition_header_pattern = re.compile(r"attachment; filename=.*.zip$")
+
+
 def debug(*args, **kwargs):
     """Print a debug message (to be used in this module only)
 
@@ -170,7 +175,13 @@ def download_and_extract(source, reporthook=None):
             )
         except URLError:
             raise DownloadError(url_error_message.format(url=source))
-        if headers.get("content-type", "") != "application/zip":
+
+        if not re.search(
+            reponse_content_type_header_pattern, headers.get("content-type", "")
+        ) and not re.search(
+            reponse_content_disposition_header_pattern,
+            headers.get("content-disposition", ""),
+        ):
             raise DownloadError(
                 _(
                     "Download of <{url}> failed or file <{name}> is not a ZIP file"