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/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2011-2014 ZeroTier Networks LLC
*
* This program 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
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_SYSTEMNETWORKSTACK_HPP
#define ZT_SYSTEMNETWORKSTACK_HPP
#include <stdint.h>
#include <vector>
#include <string>
#include <set>
#include "InetAddress.hpp"
#include "NonCopyable.hpp"
namespace ZeroTier {
/**
* Base class for OS-dependent interfaces to the system network configuration
*/
class SystemNetworkStack : NonCopyable
{
public:
struct RoutingTableEntry
{
char device[128];
InetAddress destination;
InetAddress gateway;
unsigned int deviceMetric;
};
SystemNetworkStack() {}
virtual ~SystemNetworkStack() {}
/**
* @return All routing table entries sorted in order of destination
*/
virtual std::vector<RoutingTableEntry> routingTable() const = 0;
/**
* Add or update a routing table entry
*
* Note that metrics may only be changed at the device level,
* so changes to deviceMetric are ignored.
*
* @param re Entry to add/update
* @return True if successful
*/
virtual bool addUpdateRoute(const RoutingTableEntry &re) = 0;
/**
* @param ifname Name of interface (Unix-style device or Windows device name)
* @return Interface metric (higher = lower priority)
*/
virtual unsigned int interfaceMetric(const char *ifname) const = 0;
/**
* @param ifname Name of interface (Unix-style device or Windows device name)
* @param metric New metric (higher = lower priority)
* @return True if successful
*/
virtual bool setInterfaceMetric(const char *ifname,unsigned int metric) = 0;
/**
* @return Interface names sorted in ascending order
*/
virtual std::vector<std::string> interfaces() const = 0;
/**
* @param ignoreInterfaces List of interfaces to exclude from fingerprint
* @return Integer CRC-type fingerprint of current network environment
*/
inline uint64_t networkEnvironmentFingerprint(const std::set<std::string> &ignoreInterfaces) const
{
std::vector<RoutingTableEntry> rtab(routingTable());
};
};
} // namespace ZeroTier
#endif
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