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-rw-r--r--node/WindowsEthernetTap.hpp180
1 files changed, 22 insertions, 158 deletions
diff --git a/node/WindowsEthernetTap.hpp b/node/WindowsEthernetTap.hpp
index f58dc748..4d9d7c90 100644
--- a/node/WindowsEthernetTap.hpp
+++ b/node/WindowsEthernetTap.hpp
@@ -25,51 +25,39 @@
* LLC. Start here: http://www.zerotier.com/
*/
-#ifndef ZT_ETHERNETTAP_HPP
-#define ZT_ETHERNETTAP_HPP
+#ifndef ZT_WINDOWSETHERNETTAP_HPP
+#define ZT_WINDOWSETHERNETTAP_HPP
#include <stdio.h>
#include <stdlib.h>
-#include <map>
-#include <list>
-#include <vector>
-#include <set>
#include <string>
#include <queue>
#include <stdexcept>
#include "Constants.hpp"
-#include "InetAddress.hpp"
-#include "MAC.hpp"
+#include "EthernetTap.hpp"
#include "Mutex.hpp"
-#include "MulticastGroup.hpp"
#include "Thread.hpp"
-#include "Buffer.hpp"
-#include "Array.hpp"
-#ifdef __WINDOWS__
#include <WinSock2.h>
#include <Windows.h>
-#endif
namespace ZeroTier {
class RuntimeEnvironment;
/**
- * System ethernet tap device
+ * Windows Ethernet tap device using bundled ztTap driver
*/
-class EthernetTap
+class WindowsEthernetTap : public EthernetTap
{
public:
/**
- * Construct a new TAP device
- *
- * Handler arguments: arg,from,to,etherType,data
+ * Open tap device, installing and creating one if it does not exist
*
* @param renv Runtime environment
- * @param tag A tag used to persist tap identity at the OS layer (e.g. nwid in hex for Windows or device name for *nix)
+ * @param tag A tag (presently the hex network ID) used to identify persistent tap devices in the registry
* @param mac MAC address of device
* @param mtu MTU of device
* @param desc If non-NULL, a description (not used on all OSes)
@@ -77,7 +65,7 @@ public:
* @param arg First argument to handler function
* @throws std::runtime_error Unable to allocate device
*/
- EthernetTap(
+ WindowsEthernetTap(
const RuntimeEnvironment *renv,
const char *tag,
const MAC &mac,
@@ -86,120 +74,18 @@ public:
void *arg)
throw(std::runtime_error);
- /**
- * Close tap and shut down thread
- *
- * This may block for a few seconds while thread exits.
- */
- ~EthernetTap();
-
- /**
- * Set the user display name for this connection
- *
- * This does nothing on platforms that don't have this concept.
- *
- * @param dn User display name
- */
- void setDisplayName(const char *dn);
-
- /**
- * @return MAC address of this interface
- */
- inline const MAC &mac() const throw() { return _mac; }
-
- /**
- * @return MTU of this interface
- */
- inline unsigned int mtu() const throw() { return _mtu; }
-
- /**
- * Add an IP to this interface
- *
- * @param ip IP and netmask (netmask stored in port field)
- * @return True if IP added successfully
- */
- bool addIP(const InetAddress &ip);
-
- /**
- * Remove an IP from this interface
- *
- * Link-local IP addresses may not be able to be removed, depending on platform and type.
- *
- * @param ip IP and netmask (netmask stored in port field)
- * @return True if IP removed successfully
- */
- bool removeIP(const InetAddress &ip);
-
- /**
- * @return All IP addresses (V4 and V6) assigned to this interface (including link-local)
- */
- std::set<InetAddress> ips() const;
-
- /**
- * Set this tap's IP addresses to exactly this set of IPs
- *
- * New IPs are created, ones not in this list are removed.
- *
- * @param ips IP addresses with netmask in port field
- */
- inline void setIps(const std::set<InetAddress> &allIps)
- {
- for(std::set<InetAddress>::iterator i(allIps.begin());i!=allIps.end();++i)
- addIP(*i);
- std::set<InetAddress> myIps(ips());
-#ifdef __APPLE__
- bool haveV6LinkLocal = false;
- for(std::set<InetAddress>::iterator i(myIps.begin());i!=myIps.end();++i) {
- if (i->isLinkLocal()) {
- if (i->isV6())
- haveV6LinkLocal = true;
- } else if (!allIps.count(*i))
- removeIP(*i);
- }
- if (!haveV6LinkLocal)
- addIP(InetAddress::makeIpv6LinkLocal(_mac));
-#else
- for(std::set<InetAddress>::iterator i(myIps.begin());i!=myIps.end();++i) {
- if ((!i->isLinkLocal())&&(!allIps.count(*i)))
- removeIP(*i);
- }
-#endif
- }
+ virtual ~WindowsEthernetTap();
- /**
- * Put a frame, making it available to the OS for processing
- *
- * @param from MAC address from which frame originated
- * @param to MAC address of destination (typically MAC of tap itself)
- * @param etherType Ethernet protocol ID
- * @param data Frame payload
- * @param len Length of frame
- */
- void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
-
- /**
- * @return OS-specific device or connection name
- */
- std::string deviceName() const;
-
- /**
- * @return OS-internal persistent device ID or empty string if not applicable to this platform or not persistent
- */
- std::string persistentId() const;
-
- /**
- * Fill or modify a set to contain multicast groups for this device
- *
- * This populates a set or, if already populated, modifies it to contain
- * only multicast groups in which this device is interested.
- *
- * This should always include the blind wildcard MulticastGroup (MAC of
- * ff:ff:ff:ff:ff:ff and 0 ADI field).
- *
- * @param groups Set to modify in place
- * @return True if set was changed since last call
- */
- bool updateMulticastGroups(std::set<MulticastGroup> &groups);
+ virtual void setEnabled(bool en);
+ virtual bool enabled() const;
+ virtual void setDisplayName(const char *dn);
+ virtual bool addIP(const InetAddress &ip);
+ virtual bool removeIP(const InetAddress &ip);
+ virtual std::set<InetAddress> ips() const;
+ virtual void put(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len);
+ virtual std::string deviceName() const;
+ virtual std::string persistentId() const;
+ virtual bool updateMulticastGroups(std::set<MulticastGroup> &groups);
/**
* Thread main method; do not call elsewhere
@@ -210,10 +96,6 @@ public:
/**
* Remove persistent tap device by device name
*
- * This has no effect on platforms that do not have persistent taps.
- * On platforms like Windows with persistent devices the device is
- * uninstalled.
- *
* @param _r Runtime environment
* @param pdev Device name as returned by persistentId() while tap is running
* @return True if a device was deleted
@@ -223,10 +105,6 @@ public:
/**
* Clean persistent tap devices that are not in the supplied set
*
- * This has no effect on platforms that do not have persistent taps.
- * On platforms like Windows with persistent devices the device is
- * uninstalled.
- *
* @param _r Runtime environment
* @param exceptThese Devices to leave in place
* @param alsoRemoveUnassociatedDevices If true, remove devices not associated with any network as well
@@ -235,37 +113,23 @@ public:
static int cleanPersistentTapDevices(const RuntimeEnvironment *_r,const std::set<std::string> &exceptThese,bool alsoRemoveUnassociatedDevices);
private:
- const MAC _mac;
- const unsigned int _mtu;
-
const RuntimeEnvironment *_r;
-
void (*_handler)(void *,const MAC &,const MAC &,unsigned int,const Buffer<4096> &);
void *_arg;
-
Thread _thread;
-#ifdef __UNIX_LIKE__
- char _dev[16];
- int _fd;
- int _shutdownSignalPipe[2];
-#endif
-
-#ifdef __WINDOWS__
- void _syncIpsWithRegistry(const std::set<InetAddress> &haveIps);
-
HANDLE _tap;
OVERLAPPED _tapOvlRead,_tapOvlWrite;
char _tapReadBuf[ZT_IF_MTU + 32];
HANDLE _injectSemaphore;
GUID _deviceGuid;
- std::string _myDeviceInstanceId; // NetCfgInstanceId, a GUID
- std::string _myDeviceInstanceIdPath; // DeviceInstanceID, another kind of "instance ID"
+ std::string _netCfgInstanceId; // NetCfgInstanceId, a GUID
+ std::string _deviceInstanceId; // DeviceInstanceID, another kind of "instance ID"
std::queue< std::pair< Array<char,ZT_IF_MTU + 32>,unsigned int > > _injectPending;
Mutex _injectPending_m;
volatile bool _run;
volatile bool _initialized;
-#endif
+ volatile bool _enabled;
};
} // namespace ZeroTier
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