include/wipal/wifi/unique_id/seqctl_bssid_timestamp.hxx

/*
 * WiPal - A library and a set of tools to manipulate wireless traces.
 * Copyright (C) 2007, 2008, 2009  Universite Pierre et Marie Curie - Paris 6
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301  USA
 *
 * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
 */
#ifndef WIFI_SEQCTL_BSSID_TIMESTAMP_ID_HXX_
# define WIFI_SEQCTL_BSSID_TIMESTAMP_ID_HXX_

# include "seqctl_bssid_timestamp.hh"

# include <wipal/wifi/unique_id/helper_hooks.hh>

namespace wpl
{

  namespace wifi
  {

    template <class HeaderType, class S>
    boost::optional<seq_bss_tmp_id>
    unique_id_factory<seq_bss_tmp_id>::
    build(const pkt::packet<S>& p, addr_mapping& mapping)
    {
      WP_UNIQUE_ID_DISSECT(p, d, internals::id_helper_hooks, h);

      const timestamp*          t = h.timestamp_ptr();
      const addr*               a = h.addr_ptr(mgt::header::bssid);
      const uint16_t*           s = h.seq_ctl_ptr();

      assert(not t or (a and s));
      if (t)
        return seq_bss_tmp_id (p.id(), *s, mapping[*a], *t);
      else
        return boost::none_t ();
    }

  } // End of namespace wpl::wifi.

} // End of namespace wpl.

#endif // ! WIFI_SEQCTL_BSSID_TIMESTAMP_ID_HXX_

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