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;
}