Function gnunet_sys::GNUNET_STRINGS_base64url_decode

pub unsafe extern "C" fn GNUNET_STRINGS_base64url_decode(
    data: *const c_char, 
    len: usize, 
    out: *mut *mut c_void
) -> usize

Decode from Base64url. RFC7515

@param data the data to decode @param len the length of the input @param output where to write the output (*output should be NULL, is allocated) @return the size of the output