by MadAd (1 Submission)
Category: Windows System Services
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Wed 23rd August 2000
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Reboots a Windows 2000 PC. Many examples shell to the kernel and just kill the PC. This does it properly and takes into account a user
API Declarations
Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY = &H8
Private Const SE_PRIVILEGE_ENABLED = &H2
Private Const EWX_SHUTDOWN As Long = 1
Private Const EWX_FORCE As Long = 4
Private Const EWX_REBOOT = 2
Private Type LUID
UsedPart As Long
IgnoredForNowHigh32BitPart As Long
End Type
Private Type TOKEN_PRIVILEGES
PrivilegeCount As Long
TheLuid As LUID
Attributes As Long
End Type
Private Declare Function ExitWindowsEx Lib "user32" (ByVal dwOptions As Long, ByVal dwReserved As Long) As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function OpenProcessToken Lib "advapi32" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long
Private Declare Function AdjustTokenPrivileges Lib "advapi32" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long
VBcoders
On Local Error GoTo RebootPC_ErrorHandler
Const csProcName = "RebootPC"
Dim hProcessHandle As Long
Dim hTokenHandle As Long
Dim tmpLuid As LUID
Dim tkpNew As TOKEN_PRIVILEGES
Dim tkpPrevious As TOKEN_PRIVILEGES
Dim lBufferNeeded As Long
hProcessHandle = GetCurrentProcess()
Call OpenProcessToken(hProcessHandle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, hTokenHandle)
' Get the LUID for the shutdown privilege
Call LookupPrivilegeValue("", "SeShutdownPrivilege", tmpLuid)
tkpNew.PrivilegeCount = 1 ' One privilege to set
tkpNew.TheLuid = tmpLuid
tkpNew.Attributes = SE_PRIVILEGE_ENABLED
' Enable the shutdown privilege in the access token of this process.
lBufferNeeded = 0
Call AdjustTokenPrivileges(hTokenHandle, False, tkpNew, Len(tkpPrevious), tkpPrevious, lBufferNeeded)
' Force a Reboot (no option to save files to cancel out)
Call ExitWindowsEx(EWX_FORCE Or EWX_REBOOT, &HFFFF)
Exit Sub
RebootPC_ErrorHandler:
Call RaiseError(csModName, csProcName, Err.Number, Err.Description)
End Sub
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