internal AccessPoint(WlanInterface interfac, WlanAvailableNetwork network)
{
Interface = interfac;
Network = network;
//For WIndows 7
//If XP Return ERROR_NOT_SUPPORTED
//The request is not supported.This error is returned if this function was called from a Windows XP with SP3 or Wireless LAN API for Windows XP with SP2 client.This error is also returned if the WLAN AutoConfig service is disabled.
Bssids = Interface.GetNetworkBssList(Network.dot11Ssid, Network.dot11BssType).ToList();
}
public IEnumerable <NetworkData> GetNetworkData()
{
List <NetworkData> list = new List <NetworkData>();
//If the interface is null, return nothing
if (_interface == null)
{
return(list);
}
IEnumerable <Wlan.WlanBssEntryN> networkBssList = null;
IEnumerable <Wlan.WlanAvailableNetwork> availableNetworkList = null;
try
{
networkBssList = _interface.GetNetworkBssList();
availableNetworkList = _interface.GetAvailableNetworkList(Wlan.WlanGetAvailableNetworkFlags.IncludeAllManualHiddenProfiles);
}
catch (NullReferenceException)
{
//Hopefully the call will succeed next time.
}
if ((networkBssList != null) && (availableNetworkList != null))
{
//Get connected to AP
Wlan.WlanAssociationAttributes connectedAP = new Wlan.WlanAssociationAttributes();
try
{
if (_interface.CurrentConnection.isState == Wlan.WlanInterfaceState.Connected)
{
connectedAP = _interface.CurrentConnection.wlanAssociationAttributes;
}
}
catch (NullReferenceException) { /*Hopefully it will work next time*/ }
Wlan.WlanAvailableNetwork foundNetwork = new Wlan.WlanAvailableNetwork();
foreach (Wlan.WlanBssEntryN entry in networkBssList)
{
string ssid = Encoding.ASCII.GetString(entry.BaseEntry.dot11Ssid.SSID, 0,
(int)entry.BaseEntry.dot11Ssid.SSIDLength);
if (FindNetwork(ssid, availableNetworkList, ref foundNetwork))
{
NetworkData item = new NetworkData(entry.BaseEntry.dot11Bssid);
item.IsTypeN = (entry.BaseEntry.dot11BssPhyType == Wlan.Dot11PhyType.Ht);
if (item.IsTypeN && entry.IEs != null && entry.IEs.Length > 0)
{
item.NSettings = IeParser.Parse(entry.IEs);
if (item.NSettings == null)
{
return(null);
}
//Add the extended 802.11N rates
item.Rates.AddRange(item.NSettings.Rates.Where(f => !item.Rates.Contains(f)));
item.Rates.Sort();
}
Utilities.ConvertToMbs(entry.BaseEntry.wlanRateSet.Rates, item.Rates);
item.IsTypeN = entry.BaseEntry.dot11BssPhyType == Wlan.Dot11PhyType.Ht;
int num = Utilities.ComputeRssi(entry.BaseEntry.linkQuality);
item.Rssi = (entry.BaseEntry.rssi > num) ? entry.BaseEntry.rssi : num;
// tyler's fix
// Sometimes there is an issue where the RSSI will become overly positive
// (e.g. going from -96 to +160), so subtracting 256 will fix it.
if (item.Rssi > 0)
{
item.Rssi -= 256;
}
item.Ssid = ssid;
item.Channel = Utilities.ConvertToChannel(entry.BaseEntry.chCenterFrequency);
item.NetworkType = Utilities.ConvertToString(entry.BaseEntry.dot11BssType);
item.Security = Utilities.CreateSecurityString(foundNetwork.dot11DefaultAuthAlgorithm,
foundNetwork.dot11DefaultCipherAlgorithm);
item.SignalQuality = foundNetwork.wlanSignalQuality;
//Check to see if this AP is the connected one
item.Connected = item.MyMacAddress.CompareToPhysicalAddress(connectedAP.Dot11Bssid);
list.Add(item);
}
}
}
return(list);
}