SMBC_get_auth_data(const char *server, const char *share,
                   char *workgroup_buf, int workgroup_buf_len,
                   char *username_buf, int username_buf_len,
                   char *password_buf, int password_buf_len)
{
        /* Default function just uses provided data.  Nothing to do. */
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.