public static int QueryAdapter(string adapterName, out INTF_ENTRY entry)
{
// Attempt to get the status of the indicated
// interface by calling WZCQueryInterface. If
// it works, we return true; if not, false.
// Note that the first parameter, the WZC server,
// is set to null, apparently indicating that the
// local machine is the target.
entry = new INTF_ENTRY();
INTF_FLAGS flags = 0;
entry.Guid = adapterName;
int retVal = 0;
try
{
retVal = WZC.WZCQueryInterface(null, INTF_FLAGS.INTF_ALL, ref entry, out flags);
}
catch (Exception ex)
{
// on a throw, the return value needs to get set to a non-zero
try
{
WZC.WZCDeleteIntfObj(ref entry);
}
catch { }
return(-1);
}
return(retVal);
}
/// <summary>
/// Creates a new entry with given name in memory
/// </summary>
/// <param name="guid">Name</param>
/// <returns>Entry</returns>
public static INTF_ENTRY GetEntry(string guid)
{
INTF_ENTRY entry = new INTF_ENTRY();
entry.Guid = guid;
INTF_FLAGS dwOutFlags;
int uret = WZC.WZCQueryInterface(null, INTF_FLAGS.INTF_ALL, ref entry, out dwOutFlags);
if (uret > 0)
{
throw new NetworkInformationException(uret);
}
return(entry);
}
internal static List <IAccessPoint> GetAPs(string adapterName)
{
var apList = new List <IAccessPoint>();
INTF_ENTRY entry = new INTF_ENTRY();
entry.Guid = adapterName;
INTF_FLAGS flags = 0;
int result = WZCQueryInterface(null, INTF_FLAGS.INTF_ALL, ref entry, out flags);
if (result != 0)
{
entry.Dispose();
throw new Exception("WZCQueryInterface failed for " + adapterName);
}
try
{
// Figure out how many SSIDs there are.
if (entry.rdBSSIDList.cbData == 0)
{
// list is empty
return(apList);
}
NDIS_802_11_BSSID_LIST rawlist = new NDIS_802_11_BSSID_LIST(entry.rdBSSIDList.lpData, true);
for (int i = 0; i < rawlist.NumberOfItems; i++)
{
// Get the next raw item from the list.
BSSID bssid = rawlist.Item(i);
// Using the raw item, create a cooked
// SSID item.
AccessPoint ssid = new AccessPoint(bssid);
// Add the new item to this.
apList.Add(ssid);
}
return(apList);
}
finally
{
WZCDeleteIntfObj(ref entry);
}
}
public object Clone()
{
INTF_ENTRY entry = (INTF_ENTRY)MemberwiseClone();
entry.rdBSSID.Clear();
entry.rdBSSIDList.Clear();
entry.rdCtrlData.Clear();
entry.rdSSID.Clear();
entry.rdStSSIDList.Clear();
entry.rdBSSID.lpData = this.rdBSSID.lpData;
entry.rdBSSIDList.lpData = this.rdBSSIDList.lpData;
entry.rdCtrlData.lpData = this.rdCtrlData.lpData;
entry.rdSSID.lpData = this.rdSSID.lpData;
entry.rdStSSIDList.lpData = this.rdStSSIDList.lpData;
return(entry);
}
public static int SetAdapter(INTF_ENTRY entry, INTF_FLAGS flags)
{
return(WZC.WZCSetInterface(null, flags, ref entry, null));
}
WZCDeleteIntfObj(
ref INTF_ENTRY Intf);
WZCSetInterface(
string pSrvAddr,
INTF_FLAGS dwInFlags,
ref INTF_ENTRY pIntf,
object pdwOutFlags);
WZCQueryInterface(
string pSrvAddr,
INTF_FLAGS dwInFlags,
ref INTF_ENTRY pIntf,
out INTF_FLAGS pdwOutFlags);
internal unsafe void RefreshListPreferred(bool nearbyOnly)
{
// If the caller wants only the local preferred APs,
// we check nearby list and, if the AP is not there,
// we don't add it to our own preferred list.
AccessPointCollection apc = null;
if (nearbyOnly)
{
apc = m_adapter.NearbyAccessPoints;
}
// First step is to get the INTF_ENTRY for the adapter.
// This includes the list of preferred SSID values.
INTF_ENTRY ie = INTF_ENTRY.GetEntry(this.m_adapter.Name);
// The field rdStSSIDList is the preferred list. It comes
// in the form of a WZC_802_11_CONFIG_LIST.
RAW_DATA rd = ie.rdStSSIDList;
WLANConfigurationList cl = new WLANConfigurationList(rd);
// Step through the list and add a new AP to the
// collection for each entry.
for (int i = 0; i < cl.NumberOfItems; i++)
{
WLANConfiguration c = cl.Item(i);
//Debug.WriteLine(c.SSID);
//for (int d = 1; d <= c.Data.Length; d++)
//{
// Debug.Write(string.Format("{0:x2}{1}", c.Data[d - 1], (d%8 == 0) ? "\r\n" : " "));
//}
//Debug.WriteLine(string.Empty);
// If we're only showing those which we can hear,
// see if the current SSID is in the nearby list.
if (nearbyOnly)
{
// Find the currently active AP with the SSID
// to match the one we're working on.
AccessPoint activeAP = apc.FindBySSID(c.SSID);
int ss;
// If the given SSID is not in range, don't add
// an entry to the list.
if (activeAP != null)
{
// Update signal strength.
ss = activeAP.SignalStrengthInDecibels;
// Copy the signal strength value to the
// NDIS_WLAN_BSSID structure for the
// preferred list entry.
c.Rssi = ss;
// Create the AP instance and add it to the
// preferred list.
AccessPoint ap = new AccessPoint(c);
m_aps.Add(ap);
}
}
else
{
// Create the AP instance and add it to the
// preferred list. The signal strength will
// not necessarily be valid.
AccessPoint ap = new AccessPoint(c);
m_aps.Add(ap);
}
}
// Dispose of INTF_ENTRY
ie.Dispose();
}
