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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) 2007-2008 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 version 3 as
* published by the Free Software Foundation.
*
* 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/>.
*/
#include "threadUtils.hpp"
#include "datatypes.h"
#include "seqWindow.h"
SeqWindow::SeqWindow(window_size_t w) : window_size_(w)
{
}
SeqWindow::~SeqWindow()
{
}
SeqWindow::SeqDeque::size_type SeqWindow::getLength(sender_id_t sender)
{
Lock lock(mutex_);
SenderMap::const_iterator s = sender_.find(sender);
if(s == sender_.end())
return 0;
return s->second.size();
}
bool SeqWindow::hasSeqNr(sender_id_t sender, seq_nr_t seq)
{
Lock lock(mutex_);
if (!window_size_)
return false;
SenderMap::const_iterator s = sender_.find(sender);
if(s == sender_.end())
return false;
SeqDeque::const_iterator it;
for(it = s->second.begin(); it != s->second.end(); it++)
if(*it == seq)
return true;
return false;
}
void SeqWindow::addSeqNr(sender_id_t sender, seq_nr_t seq)
{
Lock lock(mutex_);
if (!window_size_)
return;
if(sender_[sender].size() >= window_size_)
sender_[sender].pop_front();
sender_[sender].push_back(seq);
}
void SeqWindow::clear(sender_id_t sender)
{
Lock lock(mutex_);
sender_[sender].clear();
sender_.erase(sender);
}
void SeqWindow::clear()
{
Lock lock(mutex_);
sender_.clear();
}
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