Category: .NET

25 Jun 2004 08:22

Joined:	25/06/2004
Level:	Bronze
Points:	18

Points:	2

Remote ShutDown

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Hello,
Using Wmi Win32_OperatingSystem class . Im able to shutdown my local computer.
But for the same if i try with remote system it show access denied.Can any one
Help regd this.Thanks in advance .
Wther should i use the the moniker as impersonateLevel or debug Shutdown .
Can i use the Vb Script ,with some Syntax change in .net.
Coding as follow :
OpSysSet=GetObject("winmgmts:{(Debug,RemoteShutdown)}//"
& ComputerName & "/root/cimv2").ExecQuery(
"Select * from Win32_OperatingSystem where Primary=true");

#1108

25 Jun 2004 09:04

Joined:	16/06/2004
Level:	Bronze
Points:	34

Points:	2

cool.. you got two ways:

1. writing a client and server. invoke the client, by sending a value from server. The client will get the value and run the same WMI script u run to shutdown the local machine [self shutdown].

2. Second way is, u should know the admin username and password. if u r admin, following is the script you can use.


' With VBScript and Windows Management Instrumentation (WMI). 

Dim oFSO, oTS, sClient, oWindows, oLocator, oConnection, oSys
Dim sUser, sPassword

'set remote credentials
sUser = "Administrator"
sPassword = "password"

'open list of client names
Set oFSO = CreateObject("Scripting.FileSystemObject")
Set oTS = oFSO.OpenTextFile("C:\clients.txt")

Do Until oTS.AtEndOfStream
 
 'get next client name 
 sClient = oTS.ReadLine
 
 'get WMI locator
 Set oLocator = CreateObject("WbemScripting.SWbemLocator")

 'Connect to remote WMI
 Set oConnection = oLocator.ConnectServer(sClient, _
   "root\cimv2", sUser, sPassword)

  'issue shutdown to OS
 ' 4 = force logoff
 ' 5 = force shutdown
 ' 6 = force rebooot 
 ' 12 = force power off
 Set oWindows = oConnection.ExecQuery("Select " & _
   "Name From Win32_OperatingSystem")
 For Each oSys In oWindows
   oSys.Win32ShutDown(5)
 Next 

Loop

'close the text file
oTS.Close
WScript.Echo "Successfully done!"

NOTE:
1. First, you need to have a text file named C:\Clients.txt on the machine where the script runs. That file should contain the list of client names you want to shut down.

2. Instead of using a text file, you can modify this script to use ADSI, enabling it to query computer names from Active Directory or an NT domain. or by running 'net view' and write in a text file in C:\Clients.txt

3. However, as you probably don't want to run this script against every computer on your network (shutting down all of your servers might be bad), the text file provides you with complete control over which computers the script will affect.

4.You can also pass the Username and password. dont hardcode it.

#1111

25 Jun 2004 09:32

Joined:	25/06/2004
Level:	Bronze
Points:	18

Points:	2

Thanz for your valiable response.
Can i try the same code in c# with some Management class .wther it works or only
Possible with c#.but my associate machine doesnt have any password what shall i do for those parament.i tried by passing "".But access denied is the result.

With Regards

Senthil

#1112

25 Jun 2004 09:45

Joined:	16/06/2004
Level:	Bronze
Points:	34

Points:	2

1. Yes. you can do in C# too, keeping the same logic..
2. Use Admin Account's username and password and not your associate's system username and password.

#1114

25 Jun 2004 10:27

Joined:	25/06/2004
Level:	Bronze
Points:	18

Points:	2

Have you tried the same in c# , I tried with ManagementScope Class it connects to the remote Machine and fails.
Wther should i make any Properties change of the the associate Systems Wmi Environment.I enabled the Security to ALL users .is there any thing more to be done.
Thanz for ur concern for spending ur valuable Time

#1115

25 Jun 2004 10:49

Joined:	16/06/2004
Level:	Bronze
Points:	34

Points:	2

this C# code will do the work..



using System.Management;

public class RemoteShutDown
[StructLayout(LayoutKind.Sequential, Pack=1)]
			internal struct TokPriv1Luid
		{
			public int  Count;
			public long  Luid;
			public int  Attr;
		}

		[DllImport("kernel32.dll", ExactSpelling=true) ]
		internal static extern IntPtr GetCurrentProcess();

		[DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true) ]
		internal static extern bool OpenProcessToken( IntPtr h, int acc, ref IntPtr phtok );

		[DllImport("advapi32.dll", SetLastError=true) ]
		internal static extern bool LookupPrivilegeValue( string host, string name, ref long pluid );

		[DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true) ]
		internal static extern bool AdjustTokenPrivileges( IntPtr htok, bool disall,
			ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen );

		[DllImport("user32.dll", ExactSpelling=true, SetLastError=true) ]
		internal static extern bool ExitWindowsEx( int flg, int rea );

		internal const int  SE_PRIVILEGE_ENABLED = 0x00000002;
		internal const int  TOKEN_QUERY    = 0x00000008;
		internal const int  TOKEN_ADJUST_PRIVILEGES = 0x00000020;
		internal const string SE_SHUTDOWN_NAME  = "SeShutdownPrivilege";
		internal const int  EWX_LOGOFF    = 0x00000000;
		internal const int  EWX_SHUTDOWN   = 0x00000001;
		internal const int  EWX_REBOOT    = 0x00000002;
		internal const int  EWX_FORCE    = 0x00000004;
		internal const int  EWX_POWEROFF   = 0x00000008;
		internal const int  EWX_FORCEIFHUNG   = 0x00000010;


		

private void RShutdown()
	{
			DoExitWin(EWX_REBOOT + EWX_FORCE);
	}

private void DoExitWin( int flg )
	{
		bool   ok;
		TokPriv1Luid tp;
		IntPtr hproc = GetCurrentProcess();
		IntPtr htok = IntPtr.Zero;
		ok = OpenProcessToken( hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok );
		tp.Count = 1;
		tp.Luid = 0;
		tp.Attr = SE_PRIVILEGE_ENABLED;
		ok = LookupPrivilegeValue( null, SE_SHUTDOWN_NAME, ref tp.Luid );
		ok = AdjustTokenPrivileges( htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero );
		ok = ExitWindowsEx( flg, 0 );
	}

}

Remote ShutDown

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