o _@sdZddlmZddlZddlZddlmZddlmZdZ dZ dZ d Z d Z d Zd Zd ZdZddZddZGdddeZddZddZGdddejZdS)zCImplements raw HID interface on Linux using SysFS and device files.)divisionN)errors)basetcCspt|}||}|tkr!|dt|krd||dfStd|d@}|dkr-d|fS|dkr3dStd)aGet value length for a key in rd. For a key at position pos in the Report Descriptor rd, return the length of the associated value. This supports both short and long format values. Args: rd: Report Descriptor pos: The position of the key in rd. Returns: (key_size, data_len) where key_size is the number of bytes occupied by the key and data_len is the length of the value associated by the key. zMalformed report descriptor)rr z Cannot happen) bytearrayLONG_ITEM_ENCODINGlenrHidError)rdposkeycoder/lib/python3.10/site-packages/pyu2f/hid/linux.pyGetValueLength#s  rcCsVd}|dkr d}n|dkrd}n |dkrd}ntdt|||||\}|S) zFReads value_size bytes from rd at offset, least signifcant byte first.Nrzs*   (?