我正在尝试以编程方式关闭Windows:
Function ExitWindows() As Integer
Declare Function GetCurrentProcess Lib "Kernel32" () As Integer
Declare Function OpenProcessToken Lib "AdvApi32" (handle As Integer, access As Integer, ByRef tHandle As Integer) As Boolean
Declare Function LookupPrivilegeValueW Lib "AdvApi32" (sysName As Ptr, privName As WString, Luid As Ptr) As Boolean
Declare Function AdjustTokenPrivileges Lib "AdvApi32" (tHandle As Integer, disableAllPrivs As Boolean, newState As Ptr, buffLength As Integer, prevPrivs As Ptr, ByRef retLen As Integer) As Boolean
Declare Function ExitWindowsEx Lib "User32" (flags As Integer, reason As Integer) As Boolean
Declare Function GetLastError Lib "Kernel32" () As Integer
Const SE_PRIVILEGE_ENABLED = &h00000002
Const TOKEN_QUERY = &h00000008
Const TOKEN_ADJUST_PRIVILEGES = &h00000020
Const SE_SHUTDOWN_NAME = "SeShutdownPrivilege"
Const EWX_SHUTDOWN = &h00000001
Dim pHandle As Integer = GetCurrentProcess() //a handle to the current process
Dim tHandle As Integer //a handle to the token
If OpenProcessToken(pHandle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, tHandle) Then
Dim mb As New MemoryBlock(8)
mb.UInt32Value(0) = 1
mb.Int32Value(4) = SE_PRIVILEGE_ENABLED
Dim pt As Ptr
If LookupPrivilegeValueW(Nil, "SeShutdownPrivilege", mb) Then
Dim z As Integer
If AdjustTokenPrivileges(tHandle, False, mb, mb.Size, pt, z) Then
If Not ExitWindowsEx(EWX_SHUTDOWN, 0) Then
Return GetLastError() //Returns 1314
End If
Else
Return GetLastError()
End If
Else
Return GetLastError()
End If
Else
Return GetLastError()
End If
End Function
除了ExitWindowsEx之外,每个函数调用都会成功,即使以Admin身份运行,它也总是会失败并显示错误代码1314(权限未保留)。重启具有相同的问题,但Logoff可以正常工作。
我在这里做错了什么?
答案 0 :(得分:2)
您使用错误的mb调用LookupPrivilegeValueW并将错误的mb传递给AdjustTokenPrivileges。
Dim luid As New MemoryBlock(8)
If LookupPrivilegeValueW(Nil, "SeShutdownPrivilege", luid) Then
Dim mb As New MemoryBlock(16)
mb.UInt32Value(0) = 1
mb.UInt32Value(4) = luid.UInt32Value(0)
mb.UInt32Value(8) = luid.UInt32Value(4)
mb.UInt32Value(12) = SE_PRIVILEGE_ENABLED
Dim z As Integer
If AdjustTokenPrivileges(tHandle, False, mb, mb.Size, pt, z) Then