EthernetTap.hpp

/*
 * Copyright (c)2019 ZeroTier, Inc.
 *
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file in the project's root directory.
 *
 * Change Date: 2026-01-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2.0 of the Apache License.
 */
/****/

#ifndef ZT_ETHERNETTAP_HPP
#define ZT_ETHERNETTAP_HPP

#include "../node/Constants.hpp"
#include "../node/MAC.hpp"
#include "../node/InetAddress.hpp"
#include "../node/MulticastGroup.hpp"

#include <string>
#include <memory>
#include <vector>

#define GETIFADDRS_CACHE_TIME 1000

namespace ZeroTier {

class EthernetTap
{
public:
	static std::shared_ptr<EthernetTap> newInstance(
		const char *tapDeviceType, // OS-specific, NULL for default
		const char *homePath,
		const MAC &mac,
		unsigned int mtu,
		unsigned int metric,
		uint64_t nwid,
		const char *friendlyName,
		void (*handler)(void *,void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int),
		void *arg);

	EthernetTap();
	virtual ~EthernetTap();

	virtual void setEnabled(bool en) = 0;
	virtual bool enabled() const = 0;
	virtual bool addIp(const InetAddress &ip) = 0;
	virtual bool addIps(std::vector<InetAddress> ips); // uses addIp() unless overridden
	virtual bool removeIp(const InetAddress &ip) = 0;
	virtual std::vector<InetAddress> ips() const = 0;
	virtual void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len) = 0;
	virtual std::string deviceName() const = 0;
	virtual void setFriendlyName(const char *friendlyName) = 0;
	virtual std::string friendlyName() const;
	virtual void scanMulticastGroups(std::vector<MulticastGroup> &added,std::vector<MulticastGroup> &removed) = 0;
	virtual void setMtu(unsigned int mtu) = 0;
	virtual void setDns(const char *domain, const std::vector<InetAddress> &servers) = 0;
};

} // namespace ZeroTier

#endif