fix: file upload issue

backend/apps/rag/main.py

@@ -448,25 +448,11 @@ def store_doc(
 
     log.info(f"file.content_type: {file.content_type}")
     try:
-        is_valid_filename = True
         unsanitized_filename = file.filename
-        if re.search(r'[\\/:"\*\?<>|\n\t ]', unsanitized_filename) is not None:
-            is_valid_filename = False
+        filename = os.path.basename(unsanitized_filename)
 
-        unvalidated_file_path = f"{UPLOAD_DIR}/{unsanitized_filename}"
-        dereferenced_file_path = str(Path(unvalidated_file_path).resolve(strict=False))
-        if not dereferenced_file_path.startswith(UPLOAD_DIR):
-            is_valid_filename = False
+        file_path = f"{UPLOAD_DIR}/{filename}"
 
-        if is_valid_filename:
-            file_path = dereferenced_file_path
-        else:
-            raise HTTPException(
-                status_code=status.HTTP_400_BAD_REQUEST,
-                detail=ERROR_MESSAGES.DEFAULT(),
-            )
-
-        filename = file.filename
         contents = file.file.read()
         with open(file_path, "wb") as f:
             f.write(contents)
@@ -477,7 +463,7 @@ def store_doc(
             collection_name = calculate_sha256(f)[:63]
         f.close()
 
-        loader, known_type = get_loader(file.filename, file.content_type, file_path)
+        loader, known_type = get_loader(filename, file.content_type, file_path)
         data = loader.load()
 
         try: