Fix get filename from content disposition in Slicer extension (#1324)

* fix get filename from content disposition

Signed-off-by: Janis Vahldiek <[email protected]>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Signed-off-by: Janis Vahldiek <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: jlvahldiek

plugins/slicer/MONAILabel/MONAILabelLib/client.py

@@ -19,7 +19,7 @@
 import ssl
 import tempfile
 from pathlib import Path
-from urllib.parse import quote_plus, urlparse
+from urllib.parse import quote_plus, unquote, urlparse
 
 import requests
 
@@ -170,9 +170,11 @@ def download_label(self, label_id, tag):
                 MONAILabelError.SERVER_ERROR, f"Status: {status}; Response: {response}", status, response
             )
 
-        if not headers.get("content-disposition"):
+        content_disposition = headers.get("content-disposition")
+
+        if not content_disposition:
             logging.warning("Filename not found. Fall back to no loaded labels")
-        file_name = re.findall('filename="(.+)"', headers.get("content-disposition"))[0]
+        file_name = MONAILabelUtils.get_filename(content_disposition)
 
         file_ext = "".join(Path(file_name).suffixes)
         local_filename = tempfile.NamedTemporaryFile(dir=self._tmpdir, suffix=file_ext).name
@@ -432,3 +434,15 @@ def parse_multipart(fp, headers):
     @staticmethod
     def urllib_quote_plus(s):
         return quote_plus(s)
+
+    @staticmethod
+    def get_filename(content_disposition):
+        file_name = re.findall(r"filename\*=([^;]+)", content_disposition, flags=re.IGNORECASE)
+        if not file_name:
+            file_name = re.findall('filename="(.+)"', content_disposition, flags=re.IGNORECASE)
+        if "utf-8''" in file_name[0].lower():
+            file_name = re.sub("utf-8''", "", file_name[0], flags=re.IGNORECASE)
+            file_name = unquote(file_name)
+        else:
+            file_name = file_name[0]
+        return file_name