远程关机函数
记得刚学C++的时候，喜欢研究API，当时同事有一个高手，写了段代码，我在写程序的时候，莫明妙的，机器突然关掉了！我正在纳闷的时候，我听到了他的奸笑！
原来是他干的，后来我研究了好久InitiateSystemShutdown这个API函数，了解被作弄的原理了，因为我的机器加入了Windows的域，而且域的超级用户我也设置成对我本机有Administrator权限，所以，他才有机可乘！后来写了以下这段代码，让他也在工作的时候被我远程关机，爽啊！学了新东西，又以其人之道还施彼身！
//ShutDownSystem函数是关本地，自己的机器
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这个就是远程关机的C++函数了！hostName可以是机器IP，也可以是机器名字！
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 //注意这一段API调用！
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;
}