const char *sent_pw = NULL;
char *user = r->connection->user;
int ret = ap_get_basic_auth_pw(r, &sent_pw);
if (ret != OK)
{
    return ret;
}
if(!(user && sent_pwd && db_verify(user, sent_pw)){
   ap_note_basic_auth_failure(r);
   ap_log_reason("User did not authenticate", r->uri, r);
   return HTTP_UNAUTHORIZED;
}