public static bool PutUp()
{
if (!Check())
{
return(false);
}
if (handle != IntPtr.Zero)
{
return(true);
}
LoadingForm splash = LoadingForm.Create("Connecting to \"" + FriendlyName + "\" ...");
string duplicateName;
if ((duplicateName = NetworkInterface.CheckIfIPv4Used(Global.Config.LoadBalancer.IPv4LocalAddresses[0].Address, Guid)) != null)
{
splash.Stop();
Global.WriteLog("TAP Interface: IP address " + Global.Config.LoadBalancer.IPv4LocalAddresses[0].Address + " already used by \"" + duplicateName + "\"");
MessageBox.Show("\"" + FriendlyName + "\" can't use the IP address " + Global.Config.LoadBalancer.IPv4LocalAddresses[0].Address + " because it's already used by \"" + duplicateName + "\".\n\n Set a different IPv4 address in Control Panel>Tools>Load balancing>Advanced.", "TAP Interface", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
handle = Kernel32.CreateFile(@"\\.\Global\{" + Guid + "}.tap",
Kernel32.FILE_READ_DATA | Kernel32.FILE_WRITE_DATA,
Kernel32.FILE_SHARE_READ | Kernel32.FILE_SHARE_WRITE,
IntPtr.Zero,
Kernel32.OPEN_EXISTING,
Kernel32.FILE_ATTRIBUTE_SYSTEM | Kernel32.FILE_FLAG_OVERLAPPED,
IntPtr.Zero);
if (handle == Kernel32.INVALID_HANDLE_VALUE)
{
uint errorCode = Kernel32.GetLastError();
splash.Stop();
Global.WriteLog("TAP Interface: failed to connect to " + FriendlyName + ": " + Kernel32.GetLastErrorMessage(errorCode));
MessageBox.Show("Failed to connect to " + FriendlyName + ":\n" + Kernel32.GetLastErrorMessage(errorCode), "TAP Interface", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
// set TAP status to connected
uint bytesReturned = 0;
IntPtr pStatus = Marshal.AllocHGlobal(4);
Marshal.Copy(BitConverter.GetBytes(1), 0, pStatus, 4);
bool deviceStatus = Kernel32.DeviceIoControl(handle, TAP_IOCTL_SET_MEDIA_STATUS, pStatus, 4, pStatus, 4, ref bytesReturned, IntPtr.Zero);
Marshal.FreeHGlobal(pStatus);
// get TAP MAC address
bytesReturned = 0;
IntPtr pMac = Marshal.AllocHGlobal(8);
bool macRetrieved = Kernel32.DeviceIoControl(handle, TAP_IOCTL_GET_MAC, pMac, 12, pMac, 12, ref bytesReturned, IntPtr.Zero);
byte[] mac = new byte[bytesReturned];
Marshal.Copy(pMac, mac, 0, (int)bytesReturned);
Mac = BitConverter.ToString(mac).Replace('-', ':');
Marshal.FreeHGlobal(pMac);
// configure TAP
splash.UpdateStatus("Configuring " + FriendlyName + " ...");
List <Iphlpapi.Adapter> adapters = Iphlpapi.GetAdapters(Iphlpapi.FAMILY.AF_UNSPEC);
Iphlpapi.Adapter tap = adapters.Find(i => i.Guid == Guid);
if (tap == null)
{
splash.Stop();
Global.WriteLog("TAP Interface: couldn't find " + FriendlyName + " index");
MessageBox.Show("Couldn't find " + FriendlyName + " index.", "TAP Interface", MessageBoxButtons.OK, MessageBoxIcon.Error);
PutDown();
return(false);
}
Index = tap.InterfaceIndex;
if (Environment.OSVersion.Version.CompareTo(new Version("6.0")) < 0)
{
NetworkInterface.SetInterfaceMetric(Mac, "1");
}
else
{
NetworkInterface.SetInterfaceMetric(Index, "1");
}
NetworkInterface.SetNetBios(Guid, false);
NetworkInterface.ClearIPv4Addresses(Mac, Global.Config.LoadBalancer.IPv4LocalAddresses[0].Address, Global.Config.LoadBalancer.IPv4LocalAddresses[0].Subnet);
NetworkInterface.ClearGateways(Index);
NetworkInterface.ClearIPv4DnsServers(Mac);
if (Environment.OSVersion.Version.CompareTo(new Version("6.0")) < 0)
{
NetworkInterface.AddIPv4Gateway(Mac, Global.Config.LoadBalancer.IPv4GatewayAddresses[0].Address, Global.Config.LoadBalancer.IPv4GatewayAddresses[0].GatewayMetric.ToString());
}
else
{
NetworkInterface.AddIPv4Gateway(Index, Global.Config.LoadBalancer.IPv4GatewayAddresses[0].Address, Global.Config.LoadBalancer.IPv4GatewayAddresses[0].GatewayMetric.ToString());
}
NetworkInterface.SetIPv4DnsServer(FriendlyName, Global.Config.LoadBalancer.IPv4DnsAddresses[0]);
splash.Stop();
if (handle != IntPtr.Zero && handle != Kernel32.INVALID_HANDLE_VALUE && deviceStatus && macRetrieved)
{
return(true);
}
else
{
return(false);
}
}