public static string getObjectTypeName(MutexCloseHelper.SYSTEM_HANDLE_INFORMATION shHandle, Process process, out IntPtr ipHandle) { IntPtr m_ipProcessHwnd = MutexCloseHelper.OpenProcess(Win32API.ProcessAccessFlags.All, false, process.Id); ipHandle = IntPtr.Zero; var objBasic = new MutexCloseHelper.OBJECT_BASIC_INFORMATION(); IntPtr ipBasic = IntPtr.Zero; var objObjectType = new MutexCloseHelper.OBJECT_TYPE_INFORMATION(); IntPtr ipObjectType = IntPtr.Zero; IntPtr ipObjectName = IntPtr.Zero; string strObjectTypeName = ""; int nLength = 0; int nReturn = 0; IntPtr ipTemp = IntPtr.Zero; if (!MutexCloseHelper.DuplicateHandle(m_ipProcessHwnd, shHandle.Handle, MutexCloseHelper.GetCurrentProcess(), out ipHandle, 0, false, MutexCloseHelper.DUPLICATE_SAME_ACCESS)) { return(null); } ipBasic = Marshal.AllocHGlobal(Marshal.SizeOf(objBasic)); MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectBasicInformation, ipBasic, Marshal.SizeOf(objBasic), ref nLength); objBasic = (MutexCloseHelper.OBJECT_BASIC_INFORMATION)Marshal.PtrToStructure(ipBasic, objBasic.GetType()); Marshal.FreeHGlobal(ipBasic); ipObjectType = Marshal.AllocHGlobal(objBasic.TypeInformationLength); nLength = objBasic.TypeInformationLength; while ((uint)(nReturn = MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectTypeInformation, ipObjectType, nLength, ref nLength)) == MutexCloseHelper.STATUS_INFO_LENGTH_MISMATCH) { Marshal.FreeHGlobal(ipObjectType); ipObjectType = Marshal.AllocHGlobal(nLength); } //Win32API.CloseHandle(ipHandle); objObjectType = (MutexCloseHelper.OBJECT_TYPE_INFORMATION)Marshal.PtrToStructure(ipObjectType, objObjectType.GetType()); if (Is64Bits()) { ipTemp = new IntPtr(Convert.ToInt64(objObjectType.Name.Buffer.ToString(), 10) >> 32); } else { ipTemp = objObjectType.Name.Buffer; } strObjectTypeName = Marshal.PtrToStringUni(ipTemp, objObjectType.Name.Length >> 1); Marshal.FreeHGlobal(ipObjectType); return(strObjectTypeName); }
public static string getObjectTypeName(MutexCloseHelper.SYSTEM_HANDLE_INFORMATION shHandle, Process process, out IntPtr ipHandle) { IntPtr m_ipProcessHwnd = MutexCloseHelper.OpenProcess(MutexCloseHelper.ProcessAccessFlags.All, false, process.Id); ipHandle = IntPtr.Zero; var objBasic = new MutexCloseHelper.OBJECT_BASIC_INFORMATION(); IntPtr ipBasic = IntPtr.Zero; var objObjectType = new MutexCloseHelper.OBJECT_TYPE_INFORMATION(); IntPtr ipObjectType = IntPtr.Zero; IntPtr ipObjectName = IntPtr.Zero; string strObjectTypeName = ""; int nLength = 0; int nReturn = 0; IntPtr ipTemp = IntPtr.Zero; if (!MutexCloseHelper.DuplicateHandle(m_ipProcessHwnd, shHandle.Handle, MutexCloseHelper.GetCurrentProcess(), out ipHandle, 0, false, MutexCloseHelper.DUPLICATE_SAME_ACCESS)) return null; ipBasic = Marshal.AllocHGlobal(Marshal.SizeOf(objBasic)); MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectBasicInformation, ipBasic, Marshal.SizeOf(objBasic), ref nLength); objBasic = (MutexCloseHelper.OBJECT_BASIC_INFORMATION)Marshal.PtrToStructure(ipBasic, objBasic.GetType()); Marshal.FreeHGlobal(ipBasic); ipObjectType = Marshal.AllocHGlobal(objBasic.TypeInformationLength); nLength = objBasic.TypeInformationLength; while ((uint)(nReturn = MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectTypeInformation, ipObjectType, nLength, ref nLength)) == MutexCloseHelper.STATUS_INFO_LENGTH_MISMATCH) { Marshal.FreeHGlobal(ipObjectType); ipObjectType = Marshal.AllocHGlobal(nLength); } //Win32API.CloseHandle(ipHandle); objObjectType = (MutexCloseHelper.OBJECT_TYPE_INFORMATION)Marshal.PtrToStructure(ipObjectType, objObjectType.GetType()); if (Is64Bits()) { ipTemp = new IntPtr(Convert.ToInt64(objObjectType.Name.Buffer.ToString(), 10) >> 32); } else { ipTemp = objObjectType.Name.Buffer; } strObjectTypeName = Marshal.PtrToStringUni(ipTemp, objObjectType.Name.Length >> 1); Marshal.FreeHGlobal(ipObjectType); return strObjectTypeName; }