mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-22 22:32:22 +00:00
131 lines
4.2 KiB
C++
131 lines
4.2 KiB
C++
/*
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* ZeroTier One - Global Peer to Peer Ethernet
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* Copyright (C) 2011-2014 ZeroTier Networks LLC
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* ZeroTier may be used and distributed under the terms of the GPLv3, which
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* are available at: http://www.gnu.org/licenses/gpl-3.0.html
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*
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* If you would like to embed ZeroTier into a commercial application or
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* redistribute it in a modified binary form, please contact ZeroTier Networks
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* LLC. Start here: http://www.zerotier.com/
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*/
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#ifndef ZT_WINDOWSETHERNETTAP_HPP
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#define ZT_WINDOWSETHERNETTAP_HPP
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#include <stdio.h>
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#include <stdlib.h>
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#include <string>
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#include <queue>
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#include <stdexcept>
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#include "../Constants.hpp"
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#include "../EthernetTap.hpp"
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#include "../Mutex.hpp"
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#include "../Thread.hpp"
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#include "../Array.hpp"
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namespace ZeroTier {
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/**
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* Windows Ethernet tap device using bundled ztTap driver
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*/
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class WindowsEthernetTap : public EthernetTap
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{
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public:
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/**
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* Open tap device, installing and creating one if it does not exist
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*
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* @param renv Runtime environment
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* @param tag A tag (presently the hex network ID) used to identify persistent tap devices in the registry
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* @param mac MAC address of device
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* @param mtu MTU of device
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* @param desc If non-NULL, a description (not used on all OSes)
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* @param handler Handler function to be called when data is received from the tap
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* @param arg First argument to handler function
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* @throws std::runtime_error Unable to allocate device
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*/
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WindowsEthernetTap(
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const RuntimeEnvironment *renv,
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const char *tag,
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const MAC &mac,
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unsigned int mtu,
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void (*handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &),
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void *arg)
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throw(std::runtime_error);
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virtual ~WindowsEthernetTap();
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virtual void setEnabled(bool en);
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virtual bool enabled() const;
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virtual void setDisplayName(const char *dn);
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virtual bool addIP(const InetAddress &ip);
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virtual bool removeIP(const InetAddress &ip);
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virtual std::set<InetAddress> ips() const;
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virtual void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
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virtual std::string deviceName() const;
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virtual std::string persistentId() const;
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virtual bool updateMulticastGroups(std::set<MulticastGroup> &groups);
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/**
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* Thread main method; do not call elsewhere
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*/
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void threadMain()
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throw();
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/**
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* Remove persistent tap device by device name
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*
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* @param _r Runtime environment
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* @param pdev Device name as returned by persistentId() while tap is running
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* @return True if a device was deleted
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*/
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static bool deletePersistentTapDevice(const RuntimeEnvironment *_r,const char *pid);
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/**
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* Clean persistent tap devices that are not in the supplied set
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*
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* @param _r Runtime environment
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* @param exceptThese Devices to leave in place
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* @param alsoRemoveUnassociatedDevices If true, remove devices not associated with any network as well
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* @return Number of devices deleted or -1 if an error prevented the operation from being performed
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*/
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static int cleanPersistentTapDevices(const RuntimeEnvironment *_r,const std::set<std::string> &exceptThese,bool alsoRemoveUnassociatedDevices);
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private:
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void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
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void *_arg;
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Thread _thread;
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volatile HANDLE _tap;
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HANDLE _injectSemaphore;
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GUID _deviceGuid;
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std::string _netCfgInstanceId; // NetCfgInstanceId, a GUID
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std::string _deviceInstanceId; // DeviceInstanceID, another kind of "instance ID"
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std::queue< std::pair< Array<char,ZT_IF_MTU + 32>,unsigned int > > _injectPending;
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Mutex _injectPending_m;
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volatile bool _run;
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volatile bool _initialized;
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volatile bool _enabled;
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};
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} // namespace ZeroTier
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#endif
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