// get latest tun/tap device info
public static void reloadTunTap(TunTap tun)
{
string guid = tun.devGuid;
string name = GetInterfaceName(guid);
tun.name = name;
}
public void open()
{
if (validate())
{
// tap file
string fileName = TunTap.USERMODEDEVICEDIR + tun.devGuid + TunTap.TAP_WIN_SUFFIX;
IntPtr handle = TunTap.CreateFile(fileName, FileAccess.ReadWrite,
FileShare.ReadWrite, 0, FileMode.Open, FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, IntPtr.Zero);
tap = new FileStream(new SafeFileHandle(handle, true), FileAccess.ReadWrite, 10000, true);
int len;
IntPtr ps = Marshal.AllocHGlobal(1);
var flag = TunTap.DeviceIoControl(
handle, // hDevice
TunTap.TAP_WIN_IOCTL_GET_MAC, // IO control code
ps, 100, // IN buffer and size
ps, 100, // OUT buffer and size
out len, // size returned
IntPtr.Zero // overlapped
);
if (!flag)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
// set the status of the device to be connected
IntPtr pstatus = Marshal.AllocHGlobal(4);
Marshal.WriteInt32(pstatus, 1);
TunTap.DeviceIoControl(
handle, // hDevice
TunTap.TAP_WIN_IOCTL_SET_MEDIA_STATUS, // IO control code
pstatus, 4, // IN buffer and size
pstatus, 4, // OUT buffer and size
out len, // size returned
IntPtr.Zero // overlapped
);
// config tun
IntPtr ptun = Marshal.AllocHGlobal(12);
Marshal.WriteInt32(ptun, 0, 0x0100030a);
Marshal.WriteInt32(ptun, 4, 0x0000030a);
Marshal.WriteInt32(ptun, 8, unchecked ((int)0x00ffffff));
TunTap.DeviceIoControl(
handle,
TunTap.TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT,
ptun, 12,
ptun, 12,
out len,
IntPtr.Zero
);
this.isOpen = true;
}
}
public static void FixNetworkInterface(
TunTap tun,
string newname = DEFAULT_INTERFACE_NAME,
string address = DEFAULT_INTERFACE_ADDRESS,
string netmask = DEFAULT_INTERFACE_MASK,
string primaryDNS = DEFAULT_INTERFACE_PRI_DNS,
string secondaryDNS = DEFAULT_INTERFACE_SEC_DNS
)
{
string guid = tun.devGuid;
string name = GetInterfaceName(guid);
if (name != "")
{
SetInterfaceStaticAddress(name, address, netmask);
SetPrimaryDNS(name, primaryDNS);
SetSecondaryDNS(secondaryDNS);
SetInterfaceName(name, newname);
SetGlobalRoute();
reloadTunTap(tun);
}
}
public TunTapService(String guid)
{
TunTap tun = new TunTap(guid);
this.tun = tun;
}
public TunTapService(TunTap tun)
{
this.tun = tun;
}
