Set Local Network Filter Example for C++

HRESULT SetLocalNetworkFilter(IltmsServer* server) 
{ 
   HRESULT hr; 
   CComPtr<IltmsIPFilters> filters; 
   CString ipfirst; 
   CString iplast; 
 
   // this routine will setup an IP filter that only allows local network connections 
   // retrieve a copy of the current filters 
   hr = server->GetIPFilters(&filters); 
   if(FAILED(hr)) 
      goto error; 
 
   // create a full range blacklist 
   // equivalent to filters->Add(CComBSTR(L"0.0.0.0"), CComBSTR(L"255.255.255.255"), VARIANT_FALSE); 
   // create a full range whitelist 
   hr = filters->Reset(); 
   if(FAILED(hr)) 
      goto error; 
 
   // invert the single whitelist filter to create the blacklist 
   hr = filters->Remove(0); 
   if(FAILED(hr)) 
      goto error; 
 
   { 
      // obtain the server IP address and create the filter range 
      CComPtr<IltmsNetworkProperties> props; 
 
      hr = server->GetNetworkProperties(&props); 
      if(FAILED(hr)) 
         goto error; 
 
      CComBSTR v; 
      hr = props->get_ActualIPAddress(&v); 
      if(FAILED(hr)) 
         goto error; 
 
      CString t(v); 
      t = t.Left(t.ReverseFind(_T('.'))); 
      ipfirst = t + _T(".0"); 
      iplast += t + _T(".255"); 
   } 
 
   // now we will add a filter to allow for the local network IP range 
   hr = filters->Add(CComBSTR(ipfirst), CComBSTR(iplast), VARIANT_TRUE); 
   if(FAILED(hr)) 
      goto error; 
 
   // copy the filters to the server 
   hr = server->SetIPFilters(filters); 
   if(FAILED(hr)) 
      goto error; 
 
error: 
   return hr; 
}