updates

Backend/venv/lib/python3.12/site-packages/authlib/oauth2/rfc6749/util.py

@@ -0,0 +1,42 @@
+import base64
+import binascii
+from urllib.parse import unquote
+
+from authlib.common.encoding import to_unicode
+
+
+def list_to_scope(scope):
+    """Convert a list of scopes to a space separated string."""
+    if isinstance(scope, (set, tuple, list)):
+        return " ".join([to_unicode(s) for s in scope])
+    if scope is None:
+        return scope
+    return to_unicode(scope)
+
+
+def scope_to_list(scope):
+    """Convert a space separated string to a list of scopes."""
+    if isinstance(scope, (tuple, list, set)):
+        return [to_unicode(s) for s in scope]
+    elif scope is None:
+        return None
+    return scope.strip().split()
+
+
+def extract_basic_authorization(headers):
+    auth = headers.get("Authorization")
+    if not auth or " " not in auth:
+        return None, None
+
+    auth_type, auth_token = auth.split(None, 1)
+    if auth_type.lower() != "basic":
+        return None, None
+
+    try:
+        query = to_unicode(base64.b64decode(auth_token))
+    except (binascii.Error, TypeError):
+        return None, None
+    if ":" in query:
+        username, password = query.split(":", 1)
+        return unquote(username), unquote(password)
+    return query, None