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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 methods 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/>.
*/
#include "portWindow.h"
PortWindow::PortWindow(uint16_t start, uint16_t end) : start_port_(start), end_port_(end)
{
}
PortWindow::~PortWindow()
{
}
PortWindow::PortSet::size_type PortWindow::getLength()
{
Lock lock(mutex_);
return ports_.size();
}
bool PortWindow::hasPort(uint16_t port)
{
Lock lock(mutex_);
PortSet::const_iterator it=ports_.find(port);
if(it == ports_.end()) {
return false;
}
return true;
}
bool PortWindow::freePort(uint16_t port)
{
Lock lock(mutex_);
PortSet::iterator it=ports_.find(port);
if(it == ports_.end()) {
return false;
}
ports_.erase(it);
return true;
}
uint16_t PortWindow::newPort()
{
Lock lock(mutex_);
uint16_t port= start_port_;
while(port<end_port_ && ports_.find(port) !=ports_.end()) {
port++;
}
if(port>=end_port_) {
return 0;
}
ports_.insert(port);
return port;
}
void PortWindow::clear()
{
Lock lock(mutex_);
ports_.clear();
}
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