sk-nat/NATRouter.h

/*
 * NATRouter.h
 *
 *  Created on: 11-01-2017
 *      Author: Piotr Dergun
 */

#ifndef NATROUTER_H_
#define NATROUTER_H_

#include "common.h"
#include "Node.h"
#include "NATItem.h"

class NATRouter : public Node
{
	NATItem *natTable = NULL;	// tablica z zaalokowanymi portami na zewnątrz
	NetConf netWanConf;			// konfiguracja sieciowa na zewnątrz
	void initalizeNatTable();
	int getFreePort();
	int getAllocatedPort(string srcIp, int srcPort);
	void sNAT(Packet *packet);
	void dNAT(Packet *packet);
	void setWanNetwork();

public:
	NATRouter();
	NATRouter(string hostname);
	NATRouter(string hostname, string ip, string mask);
	NATRouter(string hostname, string ip, string mask, string gatewayIp);
	~NATRouter();

	virtual void onRecv();
	void freePorts();

	// settery
	void setWanIp(string wanIp);
	void setWanMask(string wanMask);
	void setWanGatewayIp(string wanGatewayIp);

	// gettery
	string getWanIp();
	string getWanMask();
	string getWanNetwork();
	string getWanGatewayIp();
};

#define NAT_TABLE_LEN 65536

#endif /* NATROUTER_H_ */