1. firewall - это сервис, следовательно надо проверять запущен сервис или нет...
2. Если на дельфи - то вот пример, проверки состояния состояния сервиса
Цитата:
uses
WinSvc;
function ServiceGetStatus(sMachine, sService: PChar): DWORD;
{******************************************}
{*** Parameters: ***}
{*** sService: specifies the name of the service to open
{*** sMachine: specifies the name of the target computer
{*** ***}
{*** Return Values: ***}
{*** -1 = Error opening service ***}
{*** 1 = SERVICE_STOPPED ***}
{*** 2 = SERVICE_START_PENDING ***}
{*** 3 = SERVICE_STOP_PENDING ***}
{*** 4 = SERVICE_RUNNING ***}
{*** 5 = SERVICE_CONTINUE_PENDING ***}
{*** 6 = SERVICE_PAUSE_PENDING ***}
{*** 7 = SERVICE_PAUSED ***}
{******************************************}
var
SCManHandle, SvcHandle: SC_Handle;
SS: TServiceStatus;
dwStat: DWORD;
begin
dwStat := 0;
// Open service manager handle.
SCManHandle := OpenSCManager(sMachine, nil, SC_MANAGER_CONNECT);
if (SCManHandle > 0) then
begin
SvcHandle := OpenService(SCManHandle, sService, SERVICE_QUERY_STATUS);
// if Service installed
if (SvcHandle > 0) then
begin
// SS structure holds the service status (TServiceStatus);
if (QueryServiceStatus(SvcHandle, SS)) then
dwStat := ss.dwCurrentState;
CloseServiceHandle(SvcHandle);
end;
CloseServiceHandle(SCManHandle);
end;
Result := dwStat;
end;
function ServiceRunning(sMachine, sService: PChar): Boolean;
begin
Result := SERVICE_RUNNING = ServiceGetStatus(sMachine, sService);
end;
// Check if Eventlog Service is running
procedure TForm1.Button1Click(Sender: TObject);
begin
if ServiceRunning(nil, 'Eventlog') then
ShowMessage('Eventlog Service Running')
else
ShowMessage('Eventlog Service not Running')
end;
{
Windows 2000 and earlier: All processes are granted the SC_MANAGER_CONNECT,
SC_MANAGER_ENUMERATE_SERVICE, and SC_MANAGER_QUERY_LOCK_STATUS access rights.
Windows XP: Only authenticated users are granted the SC_MANAGER_CONNECT,
SC_MANAGER_ENUMERATE_SERVICE,
and SC_MANAGER_QUERY_LOCK_STATUS access rights.
}
{
Do not use the service display name (as displayed in the services
control panel applet.) You must use the real service name, as
referenced in the registry under
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
}
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Взято отсюда _http://delphiworld.narod.ru/base/is_service_running.html