/*
* internal bool m_nearby = false;
* internal bool m_preferred = false;
*
* public bool IsNearby
* {
* get { return m_nearby; }
* }
*
* public bool IsPreferred
* {
* get { return m_preferred; }
* }
*/
internal AccessPoint(NDIS_WLAN_BSSID bssid)
{
name = bssid.SSID;
macaddr = bssid.MacAddress;
privacy = bssid.Privacy;
// see if the rssi is in the HIWORD or LOWORD
uint ssi = (uint)bssid.Rssi;
if (((ssi & 0xFFFF0000) > 0) && ((ssi & 0xffff) == 0))
{
// hiword
rssi = bssid.Rssi >> 16;
}
else
{
// loword
rssi = bssid.Rssi;
}
supportedrates = bssid.SupportedRates;
networktypeinuse = bssid.NetworkTypeInUse;
infrastructuremode = bssid.InfrastructureMode;
// ToDo: For now, the configuration is not returned.
// configuration = bssid.Configuration;
}
/*
internal bool m_nearby = false;
internal bool m_preferred = false;
public bool IsNearby
{
get { return m_nearby; }
}
public bool IsPreferred
{
get { return m_preferred; }
}
*/
internal AccessPoint( NDIS_WLAN_BSSID bssid )
{
name = bssid.SSID;
macaddr = bssid.MacAddress;
privacy = bssid.Privacy;
// see if the rssi is in the HIWORD or LOWORD
uint ssi = (uint)bssid.Rssi;
if(((ssi & 0xFFFF0000) > 0) && ((ssi & 0xffff) == 0 ))
{
// hiword
rssi = bssid.Rssi >> 16;
}
else
{
// loword
rssi = bssid.Rssi;
}
supportedrates = bssid.SupportedRates;
networktypeinuse = bssid.NetworkTypeInUse;
infrastructuremode = bssid.InfrastructureMode;
// ToDo: For now, the configuration is not returned.
// configuration = bssid.Configuration;
}
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 = 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.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;
WZC_WLAN_CONFIG_LIST cl = new WZC_WLAN_CONFIG_LIST(rd);
// Step through the list and add a new AP to the
// collection for each entry.
for (int i = 0; i < cl.NumberOfItems; i++)
{
WZC_WLAN_CONFIG c = cl.Item(0);
// Get a NDIS_WLAN_BSSID corresponding to the
// part of the WZC_WLAN_CONFIG entry and use that
// to build an AccessPoint instance for this
// entry.
NDIS_WLAN_BSSID bssid = c.ToBssid();
// 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(bssid.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.
bssid.Rssi = ss;
// Create the AP instance and add it to the
// preferred list.
AccessPoint ap = new AccessPoint(bssid);
this.List.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(bssid);
this.List.Add(ap);
}
}
}
internal unsafe void RefreshList(Boolean clearCache)
{
// If we are to clear the driver's cache of SSID
// values, call the appropriate method.
//Console.WriteLine("Entering RefreshList");
if (clearCache)
{
this.ClearCache();
// This seems to be needed to avoid having
// a list of zero elements returned.
System.Threading.Thread.Sleep(1000);
}
this.List.Clear();
// Retrieve a list of NDIS_802_11_BSSID_LIST
// structures from the driver. We'll parse that
// list and populate ourselves based on the data
// that we find there.
uint dwBytesReturned = 0;
NDISUIO_QUERY_OID queryOID = new NDISUIO_QUERY_OID(6000 /* TESTING JFK was 2000 */);
IntPtr ndisAccess;
bool retval;
// Attach to NDISUIO.
ndisAccess = FileEx.CreateFile(
NDISUIOPInvokes.NDISUIO_DEVICE_NAME,
FileAccess.All,
FileShare.None,
FileCreateDisposition.OpenExisting,
NDISUIOPInvokes.FILE_ATTRIBUTE_NORMAL | NDISUIOPInvokes.FILE_FLAG_OVERLAPPED);
if ((int)ndisAccess == FileEx.InvalidHandle)
{
Console.WriteLine("Attach to NDISUIO Failed");
// The operation failed. Leave us empty.
return;
}
// Get Signal strength
byte[] namestr = System.Text.Encoding.Unicode.GetBytes(adapter.Name + '\0');
fixed(byte *name = &namestr[0])
{
// Get Signal strength
queryOID.ptcDeviceName = name;
queryOID.Oid = NDISUIOPInvokes.OID_802_11_BSSID_LIST; // 0x0D010217
retval = NDISUIOPInvokes.DeviceIoControl(ndisAccess,
NDISUIOPInvokes.IOCTL_NDISUIO_QUERY_OID_VALUE, // 0x00120804
queryOID,
queryOID.Size,
queryOID,
queryOID.Size,
ref dwBytesReturned,
IntPtr.Zero);
}
if (retval)
{
// Now we need to parse the incoming data into
// suitable representations of the SSIDs.
// Figure out how many SSIDs there are.
NDIS_802_11_BSSID_LIST rawlist = new NDIS_802_11_BSSID_LIST(queryOID.Data);
for (int i = 0; i < rawlist.NumberOfItems; i++)
{
// Get the next raw item from the list.
NDIS_WLAN_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.
this.List.Add(ssid);
}
}
else
{
// We might just need more room.
// For now, we just leave the list empty.
// ToDo: Additional error processing.
Console.WriteLine("ERROR Buffer Too Small"); //You'll notice here there should be some sort of error contol but there isn't.
//We simply don't have enough room.
}
}
