public static extern uint WlanGetNetworkBssList(
SafeClientHandle hClientHandle,
[MarshalAs(UnmanagedType.LPStruct)] Guid pInterfaceGuid,
IntPtr pDot11Ssid,
DOT11_BSS_TYPE dot11BssType,
[MarshalAs(UnmanagedType.Bool)] bool bSecurityEnabled,
IntPtr pReserved,
out IntPtr ppWlanBssList); // Pointer to WLAN_BSS_LIST
public static extern int WlanGetNetworkBssList(
[In] IntPtr clientHandle,
[In, MarshalAs(UnmanagedType.LPStruct)] Guid interfaceGuid,
[In] IntPtr dot11SsidInt,
[In] DOT11_BSS_TYPE dot11BssType,
[In] bool securityEnabled,
IntPtr reservedPtr,
[Out] out IntPtr wlanBssList
);
private static BssType ConvertToBssType(DOT11_BSS_TYPE source)
{
switch (source)
{
case DOT11_BSS_TYPE.dot11_BSS_type_infrastructure:
return(BssType.Infrastructure);
case DOT11_BSS_TYPE.dot11_BSS_type_independent:
return(BssType.Independent);
default:
return(BssType.Any);
}
}
public static bool TryConvert(DOT11_BSS_TYPE source, out BssType bssType)
{
switch (source)
{
case DOT11_BSS_TYPE.dot11_BSS_type_infrastructure:
bssType = BssType.Infrastructure;
return(true);
case DOT11_BSS_TYPE.dot11_BSS_type_independent:
bssType = BssType.Independent;
return(true);
}
bssType = default(BssType);
return(false);
}
internal static IEnumerable <BssNetworkPack> EnumerateBssNetworks(Base.WlanClient client, AvailableNetworkPack network)
{
using (var container = new DisposableContainer <Base.WlanClient>(client))
{
DOT11_SSID ssid;
ssid.ucSSID = network.Ssid.ToBytes();
ssid.uSSIDLength = network.Ssid.GetLength();
DOT11_BSS_TYPE bssTypes = BssTypeConverter.ConvertBack(network.BssType);
var networkBssEntryList = Base.GetNetworkBssEntryList(container.Content.Handle, network.Interface.Id, ssid, bssTypes);
foreach (var networkBssEntry in networkBssEntryList)
{
if (!BssTypeConverter.TryConvert(networkBssEntry.dot11BssType, out BssType bssType))
{
continue;
}
//Debug.WriteLine("Interface: {0}, SSID: {1}, BSSID: {2}, Signal: {3} Link: {4}, Frequency: {5}",
// interfaceInfo.Description,
// networkBssEntry.dot11Ssid,
// networkBssEntry.dot11Bssid,
// networkBssEntry.lRssi,
// networkBssEntry.uLinkQuality,
// networkBssEntry.ulChCenterFrequency);
yield return(new BssNetworkPack(
interfaceInfo: network.Interface,
network: network,
ssid: new NetworkIdentifier(networkBssEntry.dot11Ssid.ToBytes(), networkBssEntry.dot11Ssid.ToString(), networkBssEntry.dot11Ssid.uSSIDLength),
bssType: bssType,
bssid: new NetworkIdentifier(networkBssEntry.dot11Bssid.ToBytes(), networkBssEntry.dot11Bssid.ToString(), networkBssEntry.dot11Ssid.uSSIDLength),
signalStrength: networkBssEntry.lRssi,
linkQuality: (int)networkBssEntry.uLinkQuality,
frequency: (int)networkBssEntry.ulChCenterFrequency,
channel: DetectChannel(networkBssEntry.ulChCenterFrequency)));
}
}
}
public static bool Connect(SafeClientHandle clientHandle, Guid interfaceId, string profileName, DOT11_BSS_TYPE bssType)
{
var connectionParameters = new WLAN_CONNECTION_PARAMETERS
{
wlanConnectionMode = WLAN_CONNECTION_MODE.wlan_connection_mode_profile,
strProfile = profileName,
dot11BssType = bssType,
dwFlags = 0U
};
var result = WlanConnect(
clientHandle,
interfaceId,
ref connectionParameters,
IntPtr.Zero);
// ERROR_NOT_FOUND will be returned if the interface is removed.
return(CheckResult(nameof(WlanConnect), result, false));
}
public static WLAN_BSS_ENTRY[] GetNetworkBssEntryList(SafeClientHandle clientHandle, Guid interfaceId, DOT11_SSID ssid, DOT11_BSS_TYPE bssType, bool isSecurityEnabled)
{
var queryData = IntPtr.Zero;
var wlanBssList = IntPtr.Zero;
try
{
queryData = Marshal.AllocHGlobal(Marshal.SizeOf(ssid));
Marshal.StructureToPtr(ssid, queryData, false);
var result = WlanGetNetworkBssList(
clientHandle,
interfaceId,
queryData,
bssType,
isSecurityEnabled,
IntPtr.Zero,
out wlanBssList);
// ERROR_NDIS_DOT11_POWER_STATE_INVALID will be returned if the interface is turned off.
return(CheckResult(nameof(WlanGetNetworkBssList), result, false)
? new WLAN_BSS_LIST(wlanBssList).wlanBssEntries
: new WLAN_BSS_ENTRY[0]);
}
finally
{
Marshal.FreeHGlobal(queryData);
if (wlanBssList != IntPtr.Zero)
{
WlanFreeMemory(wlanBssList);
}
}
}
private static BssType ConvertToBssType(DOT11_BSS_TYPE source)
{
switch (source)
{
case DOT11_BSS_TYPE.dot11_BSS_type_infrastructure:
return BssType.Infrastructure;
case DOT11_BSS_TYPE.dot11_BSS_type_independent:
return BssType.Independent;
default:
return BssType.Any;
}
}
private static bool Connect(IntPtr clientHandle, Guid interfaceGuid, string profileName, DOT11_BSS_TYPE bssType)
{
var connectionParameters = new WLAN_CONNECTION_PARAMETERS
{
wlanConnectionMode = WLAN_CONNECTION_MODE.wlan_connection_mode_profile,
strProfile = profileName,
dot11BssType = bssType,
dwFlags = 0U
};
var result = WlanConnect(
clientHandle,
interfaceGuid,
ref connectionParameters,
IntPtr.Zero);
// ERROR_NOT_FOUND will be returned if the interface is removed.
return CheckResult(result, "WlanConnect", false);
}
/// <summary>
/// Retrieves a list of the basic service set (BSS) entries of the wireless network or networks from specified the SSID on a given wireless LAN interface.
/// </summary>
/// <param name="clientHandle"></param>
/// <param name="interfaceId"></param>
/// <param name="ssid"></param>
/// <param name="bssType">dot11_BSS_type_infrastructure or dot11_BSS_type_independent</param>
/// <returns></returns>
public static IEnumerable <WLAN_BSS_ENTRY> GetNetworkBssEntryList(SafeClientHandle clientHandle, Guid interfaceId, DOT11_SSID ssid, DOT11_BSS_TYPE bssType)
{
IntPtr ssidPtr = Marshal.AllocHGlobal(Marshal.SizeOf(ssid));
Marshal.StructureToPtr(ssid, ssidPtr, false);
var wlanBssList = IntPtr.Zero;
try
{
var result = WlanGetNetworkBssList(
clientHandle,
interfaceId,
ssidPtr,
bssType,
true, //must true
IntPtr.Zero,
out wlanBssList);
// ERROR_NDIS_DOT11_POWER_STATE_INVALID will be returned if the interface is turned off.
return(CheckResult(nameof(WlanGetNetworkBssList), result, false)
? new WLAN_BSS_LIST(wlanBssList).wlanBssEntries
: new WLAN_BSS_ENTRY[0]);
}
finally
{
if (wlanBssList != IntPtr.Zero)
{
WlanFreeMemory(wlanBssList);
}
}
}
