Knowledge Base Nr: 00054 Remote_Shutdown_Set_Privilege.cpp - http://www.swe-kaiser.de

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shutdown eines computers im netz (oder eigener) mittels ::InitiateSystemShutdown()
setzen von security privileges (wie in useradmin)

  
BOOL Shutdown(LPCSTR lpszMachine, DWORD nWaitSec, BOOL bReboot, BOOL bCloseApps)
{
  BOOL bSuccess;

  if (lpszMachine)  //remote shutdown
    bSuccess = SetPrivilege(SE_REMOTE_SHUTDOWN_NAME, TRUE);   // to enable or disable privilege
  else
    bSuccess = SetPrivilege(SE_SHUTDOWN_NAME, TRUE);   // to enable or disable privilege

  bSuccess = ::InitiateSystemShutdown((LPSTR)lpszMachine,   // pointer to name of computer to shut down
            "Die Maschine wird jetzt heruntergefahren! :-)",   // pointer to message to display in dialog box
            nWaitSec,           // time to display dialog box in seconds
            bCloseApps,     // force applications closed flag
            bReboot  // reboot flag
            );
  DWORD dwRes = ::GetLastError();

  return (dwRes == ERROR_SUCCESS);
}

BOOL SetPrivilege(LPCTSTR lpszPrivilege,  // name of privilege to enable/disable
                BOOL bEnablePrivilege)   // to enable or disable privilege
{
  HANDLE hToken = 0;          // access token handle
  if (!OpenProcessToken(::GetCurrentProcess(), // handle to process
              TOKEN_ADJUST_PRIVILEGES,  // access to process
              &hToken))  // pointer to handle to open access token
  {
    TRACE("OpenProcessToken failed: %u\n", GetLastError() );
    return FALSE;
  }

  TOKEN_PRIVILEGES tp;
  LUID luid;
  if ( !LookupPrivilegeValue(NULL,            // lookup privilege on local system
                 lpszPrivilege,   // privilege to lookup
                 &luid ) )
  {      // receives LUID of privilege
    TRACE("LookupPrivilegeValue error: %u\n", GetLastError() );
    return FALSE;
  }

    tp.PrivilegeCount = 1;
  tp.Privileges[0].Luid = luid;

  if (bEnablePrivilege)
    tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
  else
    tp.Privileges[0].Attributes = 0;

  // Enable the privilege or disable all privileges.
  AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES)
                    , (PTOKEN_PRIVILEGES) NULL, (PDWORD) NULL);

  // Call GetLastError to determine whether the function succeeded.
  if (GetLastError() != ERROR_SUCCESS)
  {
      TRACE("AdjustTokenPrivileges failed: %u\n", GetLastError() );
      return FALSE;
  }

  return TRUE;
}