public static string getObjectName(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; IntPtr ipObjectType = IntPtr.Zero; var objObjectName = new MutexCloseHelper.OBJECT_NAME_INFORMATION(); IntPtr ipObjectName = IntPtr.Zero; string strObjectName = ""; 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); nLength = objBasic.NameInformationLength; ipObjectName = Marshal.AllocHGlobal(nLength); while ((uint)(nReturn = MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectNameInformation, ipObjectName, nLength, ref nLength)) == MutexCloseHelper.STATUS_INFO_LENGTH_MISMATCH) { Marshal.FreeHGlobal(ipObjectName); ipObjectName = Marshal.AllocHGlobal(nLength); } //Win32API.CloseHandle(ipHandle); objObjectName = (MutexCloseHelper.OBJECT_NAME_INFORMATION)Marshal.PtrToStructure(ipObjectName, objObjectName.GetType()); if (Is64Bits()) { ipTemp = new IntPtr(Convert.ToInt64(objObjectName.Name.Buffer.ToString(), 10) >> 32); } else { ipTemp = objObjectName.Name.Buffer; } if (ipTemp != IntPtr.Zero) { byte[] baTemp2 = new byte[nLength]; try { Marshal.Copy(ipTemp, baTemp2, 0, nLength); strObjectName = Marshal.PtrToStringUni(Is64Bits() ? new IntPtr(ipTemp.ToInt64()) : new IntPtr(ipTemp.ToInt32())); return strObjectName; } catch (AccessViolationException) { return null; } finally { Marshal.FreeHGlobal(ipObjectName); MutexCloseHelper.CloseHandle(ipHandle); } } return null; }
public static string getObjectName(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; IntPtr ipObjectType = IntPtr.Zero; var objObjectName = new MutexCloseHelper.OBJECT_NAME_INFORMATION(); IntPtr ipObjectName = IntPtr.Zero; string strObjectName = ""; 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); nLength = objBasic.NameInformationLength; ipObjectName = Marshal.AllocHGlobal(nLength); while ((uint)(nReturn = MutexCloseHelper.NtQueryObject(ipHandle, (int)MutexCloseHelper.ObjectInformationClass.ObjectNameInformation, ipObjectName, nLength, ref nLength)) == MutexCloseHelper.STATUS_INFO_LENGTH_MISMATCH) { Marshal.FreeHGlobal(ipObjectName); ipObjectName = Marshal.AllocHGlobal(nLength); } //Win32API.CloseHandle(ipHandle); objObjectName = (MutexCloseHelper.OBJECT_NAME_INFORMATION)Marshal.PtrToStructure(ipObjectName, objObjectName.GetType()); if (Is64Bits()) { ipTemp = new IntPtr(Convert.ToInt64(objObjectName.Name.Buffer.ToString(), 10) >> 32); } else { ipTemp = objObjectName.Name.Buffer; } if (ipTemp != IntPtr.Zero) { byte[] baTemp2 = new byte[nLength]; try { Marshal.Copy(ipTemp, baTemp2, 0, nLength); strObjectName = Marshal.PtrToStringUni(Is64Bits() ? new IntPtr(ipTemp.ToInt64()) : new IntPtr(ipTemp.ToInt32())); return(strObjectName); } catch (AccessViolationException) { return(null); } finally { Marshal.FreeHGlobal(ipObjectName); MutexCloseHelper.CloseHandle(ipHandle); } } return(null); }