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 程式師世界 >> 編程語言 >> C語言 >> C++ >> C++入門知識 >> C++遠程關機API的學習過程

C++遠程關機API的學習過程

編輯:C++入門知識

  記得剛學C++的時候,喜歡研究API,當時同事有一個高手,寫了段代碼,我在寫程序的時候,莫明妙的,機器突然關掉了!我正在納悶的時候,我聽到了他的奸笑!

   原來是他干的,後來我研究了好久InitiateSystemShutdown這個API函數,了解被作弄的原理了,因為我的機器加入了Windows的域,而且域的超級用戶我也設置成對我本機有Administrator權限,所以,他才有機可乘!後來寫了以下這段代碼,讓他也在工作的時候被我遠程關機,爽啊!學了新東西,又以其人之道還施彼身!

  //ShutDownSystem函數是關本地,自己的機器
  BOOL CAlarmClockDlg::ShutDownSystem()
  {
   HANDLE hToken;
   TOKEN_PRIVILEGES tkp;
   // Get a token for this process.
   if (!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
   AfxMessageBox("OpenProcessToken");
   // Get the LUID for the shutdown privilege.
   LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
   tkp.PrivilegeCount = 1; // one privilege to set
   tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
   // Get the shutdown privilege for this process.
   AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
   if(GetLastError()!= ERROR_SUCCESS)
   AfxMessageBox("AdjustTokenPrivileges");
   // Shut down the system and force all applications to close.
   if(!ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE, 0))
   {
   return FALSE;
   }
   else
   {
   return TRUE;
   }
  }
  //shutdownHost這個就是遠程關機的C++函數了!hostName可以是機器IP,也可以是機器名字!
  BOOL CAlarmClockDlg::shutdownHost(CString hostName)
  {
   HANDLE hToken; // handle to process token
   TOKEN_PRIVILEGES tkp; // pointer to token structure
   BOOL fResult; // system shutdown flag
   // Get the current process token handle so we can get shutdown
   // privilege.
   if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
   AfxMessageBox("OpenProcessToken failed.");
   // Get the LUID for shutdown privilege.
   LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &tkp.Privileges[0].Luid);
   tkp.PrivilegeCount = 1; // one privilege to set
   tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
   // Get shutdown privilege for this process.
   AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES) NULL, 0);
   // Cannot test the return value of AdjustTokenPrivileges.
   if (GetLastError() != ERROR_SUCCESS)
   AfxMessageBox("AdjustTokenPrivileges enable failed.");
   // Display the shutdown dialog box and start the time-out countdown.
   fResult = InitiateSystemShutdown("192.168.100.245", // shut down local computer
   "Click on the main window and press the Escape key to cancel shutdown.", // message to user
   1, // time-out period
   FALSE, // ask user to close apps //注意這一段API調用!
   FALSE); // reboot after shutdown
   if (!fResult)
   {
   AfxMessageBox("InitiateSystemShutdown failed.");
   }
   // Disable shutdown privilege.
   tkp.Privileges[0].Attributes = 0;
   AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES) NULL, 0);
   if (GetLastError() != ERROR_SUCCESS)
   {
   AfxMessageBox("AdjustTokenPrivileges disable failed.");
   }
   return TRUE;
  }

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