private static void AddPort(string portName, int protocol, int portNumber, string address, string queue, bool snmpEnabled = false, string snmpCommunity = "public", int snmpDevIndex = 1)
{
if (PortExists(portName))
{
LogDebug($"Port '{portName}' already exists.");
return;
}
LogDebug($"Creating port '{portName}'.");
using (SafePrinterHandle xcvMonitor = NativeMethods.OpenXcvMonitor())
{
var portData = new NativeMethods.PortData
{
PortName = portName,
Protocol = (uint)protocol,
PortNumber = (uint)portNumber,
IPAddress = address,
HostAddress = address,
Queue = queue,
SnmpEnabled = snmpEnabled ? 1U : 0U,
SnmpCommunity = snmpCommunity,
SnmpDevIndex = (uint)snmpDevIndex,
Version = 1,
Reserved = 0,
Size = (uint)Marshal.SizeOf <NativeMethods.PortData>()
};
NativeMethods.XcvPortData(xcvMonitor, "AddPort", portData);
LogDebug($"Port '{portName}' created.");
}
}
internal static void XcvPortData(SafePrinterHandle xcvMonitor, string command, object portData)
{
// TCPMON XCV commands are listed at https://msdn.microsoft.com/en-us/windows/hardware/drivers/print/tcpmon-xcv-commands
int size = Marshal.SizeOf(portData);
using (SafeUnmanagedMemoryHandle inputDataPointer = new SafeUnmanagedMemoryHandle(size))
{
Marshal.StructureToPtr(portData, inputDataPointer.DangerousGetHandle(), true);
if (!XcvData(xcvMonitor, command, inputDataPointer, (uint)size, IntPtr.Zero, 0, out uint outputNeededSize, out uint status))
{
throw new Win32Exception();
}
}
}
/// <summary>
/// Deletes the specified print port.
/// </summary>
/// <param name="portName">The port name.</param>
/// <exception cref="Win32Exception">The underlying operation failed.</exception>
public static void DeletePort(string portName)
{
if (!PortExists(portName))
{
LogDebug($"Port '{portName}' does not exist.");
return;
}
LogDebug($"Deleting port '{portName}'.");
using (SafePrinterHandle xcvMonitor = NativeMethods.OpenXcvMonitor())
{
var portData = new NativeMethods.DeletePortData()
{
PortName = portName,
Version = 1,
Reserved = 0
};
NativeMethods.XcvPortData(xcvMonitor, "DeletePort", portData);
LogDebug($"Port '{portName}' deleted.");
}
}
internal static extern bool XcvData(SafePrinterHandle hXcv, string pszDataName, SafeUnmanagedMemoryHandle pInputData, uint cbInputData, IntPtr pOutputData, uint cbOutputData, out uint pcbOutputNeeded, out uint pdwStatus);
internal static extern bool OpenPrinter(string pPrinterName, out SafePrinterHandle phPrinter, ref PrinterDefaults pDefault);