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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun 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 3 of the License, or
* any later version.
*
* Anytun 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 anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _SEQ_WINDOW_H_
#define _SEQ_WINDOW_H_
#include <map>
#include <deque>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include "threadUtils.hpp"
#include "datatypes.h"
class SeqWindow;
class SeqWindowElement {
public:
SeqWindowElement();
~SeqWindowElement();
void init(window_size_t w, seq_nr_t m);
seq_nr_t max_;
window_size_t pos_;
u_int8_t* window_;
};
class SeqWindow
{
public:
typedef std::map<sender_id_t, SeqWindowElement> SenderMap;
SeqWindow(window_size_t w);
~SeqWindow();
bool checkAndAdd(sender_id_t sender, seq_nr_t seq_nr);
void clear(sender_id_t sender);
void clear();
private:
window_size_t window_size_;
Mutex mutex_;
SenderMap sender_;
SeqWindow(const SeqWindow &s);
void operator=(const SeqWindow &s);
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
Lock lock(mutex_);
//unsigned int serial = (unsigned int) window_size_;
//window_size_t serial = (window_size_t) window_size_;
ar & window_size_;
//TODO: Do not sync complete Sender Map!
// ar & sender_;
}
};
#endif
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