public static WINSTATIONINFORMATIONW GetWinStationInformation(IntPtr server, int sessionId)
{
int retLen = 0;
WINSTATIONINFORMATIONW wsInfo = new WINSTATIONINFORMATIONW();
WinStationQueryInformation(server, sessionId, (int)WINSTATIONINFOCLASS.WinStationInformation, ref wsInfo, Marshal.SizeOf(typeof(WINSTATIONINFORMATIONW)), ref retLen);
return(wsInfo);
}
/// <summary>
/// Method LoadWinStationInformationProperties.
/// </summary>
private void LoadWinStationInformationProperties()
{
WINSTATIONINFORMATIONW winStationInfo = NativeMethodsHelper.GetWinStationInformation(this._server.Handle, this._sessionId);
this._windowStationName.Value = winStationInfo.WinStationName;
this._connectState.Value = winStationInfo.ConnectState;
this._connectTime.Value = NativeMethodsHelper.FileTimeToDateTime(winStationInfo.ConnectTime);
this._currentTime.Value = NativeMethodsHelper.FileTimeToDateTime(winStationInfo.CurrentTime);
this._disconnectTime.Value = NativeMethodsHelper.FileTimeToDateTime(winStationInfo.DisconnectTime);
this._lastInputTime.Value = NativeMethodsHelper.FileTimeToDateTime(winStationInfo.LastInputTime);
this._loginTime.Value = NativeMethodsHelper.FileTimeToDateTime(winStationInfo.LoginTime);
this._userName.Value = winStationInfo.UserName;
this._domainName.Value = winStationInfo.Domain;
this._incomingStatistics.Value = new ProtocolStatistics(winStationInfo.ProtocolStatus.Input);
this._outgoingStatistics.Value = new ProtocolStatistics(winStationInfo.ProtocolStatus.Output);
}
public static TerminalSessionInfo GetSessionInfo(string ServerName, int SessionId)
{
IntPtr server = IntPtr.Zero;
IntPtr buffer = IntPtr.Zero;
int bytesReturned;
TerminalSessionInfo data = new TerminalSessionInfo();
bool _IsCurrentSessionId = false;
bool _IsConsoleSession = false;
bool _IsUserSession = false;
int currentSessionID = 0;
string _NTAccount = String.Empty;
if (ServerName == "localhost" || ServerName == String.Empty)
{
ServerName = Environment.MachineName;
}
if (ProcessIdToSessionId(GetCurrentProcessId(), ref currentSessionID) == false)
{
currentSessionID = -1;
}
// Get all members of the local administrators group
bool _IsLocalAdminCheckSuccess = false;
List <string> localAdminGroupSidsList = new List <string>();
try
{
DirectoryEntry localMachine = new DirectoryEntry("WinNT://" + ServerName + ",Computer");
string localAdminGroupName = new SecurityIdentifier("S-1-5-32-544").Translate(typeof(NTAccount)).Value.Split('\\')[1];
DirectoryEntry admGroup = localMachine.Children.Find(localAdminGroupName, "group");
object members = admGroup.Invoke("members", null);
foreach (object groupMember in (IEnumerable)members)
{
DirectoryEntry member = new DirectoryEntry(groupMember);
if (member.Name != String.Empty)
{
localAdminGroupSidsList.Add((new NTAccount(member.Name)).Translate(typeof(SecurityIdentifier)).Value);
}
}
_IsLocalAdminCheckSuccess = true;
}
catch { }
try
{
server = OpenServer(ServerName);
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.ClientBuildNumber, out buffer, out bytesReturned) == false)
{
return(data);
}
int lData = Marshal.ReadInt32(buffer);
data.ClientBuildNumber = lData;
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.ClientDirectory, out buffer, out bytesReturned) == false)
{
return(data);
}
string strData = Marshal.PtrToStringAnsi(buffer);
data.ClientDirectory = strData;
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.ClientName, out buffer, out bytesReturned) == false)
{
return(data);
}
strData = Marshal.PtrToStringAnsi(buffer);
data.ClientName = strData;
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.ClientProtocolType, out buffer, out bytesReturned) == false)
{
return(data);
}
Int16 intData = Marshal.ReadInt16(buffer);
if (intData == 2)
{
strData = "RDP";
data.IsRdpSession = true;
}
else
{
strData = "";
data.IsRdpSession = false;
}
data.ClientProtocolType = strData;
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.ConnectState, out buffer, out bytesReturned) == false)
{
return(data);
}
lData = Marshal.ReadInt32(buffer);
data.ConnectState = ((WTS_CONNECTSTATE_CLASS)lData).ToString();
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.SessionId, out buffer, out bytesReturned) == false)
{
return(data);
}
lData = Marshal.ReadInt32(buffer);
data.SessionId = lData;
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.DomainName, out buffer, out bytesReturned) == false)
{
return(data);
}
strData = Marshal.PtrToStringAnsi(buffer).ToUpper();
data.DomainName = strData;
if (strData != String.Empty)
{
_NTAccount = strData;
}
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.UserName, out buffer, out bytesReturned) == false)
{
return(data);
}
strData = Marshal.PtrToStringAnsi(buffer);
data.UserName = strData;
if (strData != String.Empty)
{
data.NTAccount = _NTAccount + "\\" + strData;
string _Sid = (new NTAccount(_NTAccount + "\\" + strData)).Translate(typeof(SecurityIdentifier)).Value;
data.SID = _Sid;
if (_IsLocalAdminCheckSuccess == true)
{
foreach (string localAdminGroupSid in localAdminGroupSidsList)
{
if (localAdminGroupSid == _Sid)
{
data.IsLocalAdmin = true;
break;
}
else
{
data.IsLocalAdmin = false;
}
}
}
}
if (WTSQuerySessionInformation(server, SessionId, WTS_INFO_CLASS.SessionName, out buffer, out bytesReturned) == false)
{
return(data);
}
strData = Marshal.PtrToStringAnsi(buffer);
data.SessionName = strData;
if (strData != "Services" && strData != "RDP-Tcp" && data.UserName != String.Empty)
{
_IsUserSession = true;
}
data.IsUserSession = _IsUserSession;
if (strData == "Console")
{
_IsConsoleSession = true;
}
data.IsConsoleSession = _IsConsoleSession;
WINSTATIONINFORMATIONW wsInfo = GetWinStationInformation(server, SessionId);
DateTime?_loginTime = FileTimeToDateTime(wsInfo.LoginTime);
DateTime?_lastInputTime = FileTimeToDateTime(wsInfo.LastInputTime);
DateTime?_disconnectTime = FileTimeToDateTime(wsInfo.DisconnectTime);
DateTime?_currentTime = FileTimeToDateTime(wsInfo.CurrentTime);
TimeSpan?_idleTime = (_currentTime != null && _lastInputTime != null) ? _currentTime.Value - _lastInputTime.Value : TimeSpan.Zero;
data.LogonTime = _loginTime;
data.IdleTime = _idleTime;
data.DisconnectTime = _disconnectTime;
if (currentSessionID == SessionId)
{
_IsCurrentSessionId = true;
}
data.IsCurrentSession = _IsCurrentSessionId;
}
finally
{
WTSFreeMemory(buffer);
buffer = IntPtr.Zero;
CloseServer(server);
}
return(data);
}
public static extern int WinStationQueryInformation(IntPtr hServer, int sessionId, int information, ref WINSTATIONINFORMATIONW pBuffer, int bufferLength, ref int returnedLength);
