private static WlanInternBssEntry[] GetBssList(Nic nic, out int errorCode)
{
IntPtr bssListPtr;
if ((errorCode = WlanInterop.GetBssEntryList(_handle, nic.Hardware.Id, IntPtr.Zero, BssType.Any, false, IntPtr.Zero, out bssListPtr)) != 0)
return new WlanInternBssEntry[0];
try
{
var bssListHeader = (WlanInternBssEntryListHeader) Marshal.PtrToStructure(bssListPtr, typeof (WlanInternBssEntryListHeader));
long bssListIt = bssListPtr.ToInt64() + Marshal.SizeOf(typeof (WlanInternBssEntryListHeader));
var bssEntries = new WlanInternBssEntry[bssListHeader.numberOfItems];
for (int i = 0; i < bssListHeader.numberOfItems; ++i)
{
bssEntries[i] = (WlanInternBssEntry) Marshal.PtrToStructure(new IntPtr(bssListIt), typeof (WlanInternBssEntry));
bssListIt += Marshal.SizeOf(typeof (WlanInternBssEntry));
}
errorCode = 0;
return bssEntries;
}
finally
{
WlanInterop.FreeMemory(bssListPtr);
}
}
internal void Reload(WlanInternBssEntry bss)
{
Ssid = bss.Dot11Ssid.GetSsid();
Mac = bss.GetMacAddress();
Type = bss.dot11BssType;
PhyType = bss.dot11BssPhyType;
Rssi = bss.rssi;
LinkQuality = bss.linkQuality;
InRegDomain = bss.inRegDomain;
BeaconPeriod = bss.beaconPeriod;
Timestamp = bss.timestamp;
HostTimestamp = bss.hostTimestamp;
CapabilityInformation = bss.capabilityInformation;
ChannelCenterFrequency = bss.chCenterFrequency;
Rates = bss.wlanRateSet.GetRatesInMbps();
byte ch;
Channel = ChannelTable.TryGetValue(ChannelCenterFrequency, out ch) ? ch : (byte) 0;
if (LinkHost == null || LinkHost.Mac != Mac)
LinkHost = NetDb.LinkLayerHost.GetOrCreate(Mac);
LinkHost.ApplyName(NsProtocolTypes.Wlan, Ssid);
LinkHost.Seen();
}
internal Bss(Ssid owner, WlanInternBssEntry bss)
{
_owner = owner;
Reload(bss);
}
internal void ReloadBssList(WlanInternBssEntry[] lst)
{
if (lst == null || lst.Length == 0)
{
_bsses.Clear();
return;
}
var itemsToDelete = _bsses.ToList();
for (int i = 0; i < lst.Length; i++)
{
var newBss = lst[i];
string mac = newBss.GetMacAddress();
var item = itemsToDelete.FirstOrDefault(x => x.Mac == mac);
if (item == null)
{
item = new Bss(this, newBss);
_bsses.Add(item);
}
else
{
item.Reload(newBss);
itemsToDelete.Remove(item);
}
var oldIndex = _bsses.IndexOf(item);
_bsses.Move(oldIndex, i);
}
foreach (var item in itemsToDelete)
{
_bsses.Remove(item);
}
}