public static IntPtr GetCurrentUserToken()
{
IntPtr primaryToken = IntPtr.Zero;
IntPtr WTS_CURRENT_SERVER_HANDLE = IntPtr.Zero;
int dwSessionId = 0;
IntPtr hUserToken = IntPtr.Zero;
IntPtr hTokenDup = IntPtr.Zero;
IntPtr pSessionInfo = IntPtr.Zero;
int dwCount = 0;
NativeMethods.WTSEnumerateSessions(WTS_CURRENT_SERVER_HANDLE, 0, 1, ref pSessionInfo, ref dwCount);
Int32 dataSize = Marshal.SizeOf(typeof(NativeMethods.WTS_SESSION_INFO));
Int32 current = (int)pSessionInfo;
for (int i = 0; i < dwCount; i++)
{
NativeMethods.WTS_SESSION_INFO si = (NativeMethods.WTS_SESSION_INFO)Marshal.PtrToStructure((System.IntPtr)current, typeof(NativeMethods.WTS_SESSION_INFO));
if (NativeMethods.WTS_CONNECTSTATE_CLASS.WTSActive == si.State)
{
dwSessionId = si.SessionID;
break;
}
current += dataSize;
}
NativeMethods.WTSFreeMemory(pSessionInfo);
bool bRet = NativeMethods.WTSQueryUserToken(dwSessionId, out primaryToken);
if (bRet == false)
{
return(IntPtr.Zero);
}
return(primaryToken);
}
private void GetSessions()
{
IntPtr server = IntPtr.Zero;
List <string> ret = new List <string>();
try
{
server = NativeMethods.WTSOpenServer(".");
IntPtr ppSessionInfo = IntPtr.Zero;
int count = 0;
int retval = NativeMethods.WTSEnumerateSessions(server, 0, 1, ref ppSessionInfo, ref count);
int dataSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(NativeMethods.WTS_SESSION_INFO));
long current = (int)ppSessionInfo;
if (retval != 0)
{
for (int i = 0; i < count; i++)
{
NativeMethods.WTS_SESSION_INFO si = (NativeMethods.WTS_SESSION_INFO)System.Runtime.InteropServices.Marshal.PtrToStructure((System.IntPtr)current, typeof(NativeMethods.WTS_SESSION_INFO));
current += dataSize;
ret.Add(si.SessionID + " " + si.State + " " + si.pWinStationName);
}
NativeMethods.WTSFreeMemory(ppSessionInfo);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
try
{
NativeMethods.WTSCloseServer(server);
}
catch (Exception)
{
}
}
}
