private void GetNDISAPs()
{
// 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.
string name = m_adapter.Name;
byte[] data = NDISUIO.QueryOID(NDIS_OID.BSSID_LIST, name);
if (data != null)
{
// Figure out how many SSIDs there are.
NDIS_802_11_BSSID_LIST rawlist = new NDIS_802_11_BSSID_LIST(data, false);
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.
m_aps.Add(ssid);
}
}
else
{
throw new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error(), "Unable to get BSSID List");
}
}
public unsafe static bool IoControl(uint code, byte[] indata, byte[] outdata)
{
NDISUIO ndis = new NDISUIO();
bool retVal = false;
try
{
try
{
ndis.Open(System.IO.FileAccess.ReadWrite, System.IO.FileShare.ReadWrite);
}
catch
{
throw new NetworkInformationException(System.Runtime.InteropServices.Marshal.GetLastWin32Error());
}
try
{
ndis.DeviceIoControl(code, indata, outdata);
}
catch (Exception)
{
retVal = false;
}
}
finally
{
ndis.Dispose();
}
return(retVal);
}
internal unsafe void ClearCache()
{
string name = m_adapter.Name;
if (!NDISUIO.SetOID(NDIS_OID.BSSID_LIST_SCAN, name))
{
throw new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error(), "Unable to clear adapter's NDIS cache");
}
}
private void TeardownQueueListener()
{
if (m_ndisQueue != null)
{
NDISUIO.CancelNotifications();
m_ndisQueue.Close();
m_ndisQueue = null;
}
}
private void SetupQueueListener()
{
if (m_ndisQueue != null)
{
m_ndisQueue = new P2PMessageQueue(true, null, NDISUIO_DEVICE_NOTIFICATION.Size, 0);
m_ndisQueue.DataOnQueueChanged += new EventHandler(DataOnQueueChanged);
NDISUIO.RequestNotifications(m_ndisQueue);
}
}
/// <summary>
/// Attempts to connect to a specific Access Point
/// </summary>
/// <param name="SSID">The Service Set Identified or the Access Point to which a connection should be made</param>
public virtual void Connect(string SSID)
{
if (SSID.Length > 32)
{
throw new ArgumentException("SSID Max Length is 32 characters");
}
if (!NDISUIO.SetOID(NDIS_OID.SSID, this.Name, Encoding.ASCII.GetBytes(SSID)))
{
throw new NotSupportedException();
}
}
public static void CancelNotifications()
{
NDISUIO ndis = new NDISUIO();
try
{
ndis.DeviceIoControl(IOCTL_NDISUIO_CANCEL_NOTIFICATION, null, null);
}
finally
{
ndis.Dispose();
}
}
public static void RequestNotifications(P2PMessageQueue rxQueue)
{
NDISUIO ndis = new NDISUIO();
try
{
NDISUIO_REQUEST_NOTIFICATION request = new NDISUIO_REQUEST_NOTIFICATION();
request.hMsgQueue = rxQueue.Handle;
request.dwNotificationTypes = ALL_NOTIFICATIONS;
ndis.DeviceIoControl(IOCTL_NDISUIO_REQUEST_NOTIFICATION, request.GetBytes(), null);
}
finally
{
ndis.Dispose();
}
}
public unsafe static bool SetOID(NDIS_OID oid, string adapterName, NDISQueryOid queryOID)
{
NDISUIO ndis = new NDISUIO();
if (queryOID == null)
{
queryOID = new NDISQueryOid(0);
}
byte[] nameBytes = System.Text.Encoding.Unicode.GetBytes(adapterName + '\0');
fixed(byte *pName = &nameBytes[0])
{
queryOID.ptcDeviceName = pName;
queryOID.Oid = (uint)oid;
try
{
ndis.Open(System.IO.FileAccess.ReadWrite, System.IO.FileShare.ReadWrite);
}
catch
{
throw new NetworkInformationException(System.Runtime.InteropServices.Marshal.GetLastWin32Error());
}
try
{
ndis.DeviceIoControl(IOCTL_NDISUIO_SET_OID_VALUE, queryOID.getBytes(), queryOID.getBytes());
}
catch (Exception)
{
return(false);
}
}
ndis.Dispose();
return(true);
}
public unsafe static byte[] QueryOID(NDIS_OID oid, string adapterName)
{
if ((adapterName == null) || (adapterName == string.Empty))
{
// no point in even trying to call NDIS if this is the case
return(null);
}
NDISUIO ndis = new NDISUIO();
NDISQueryOid queryOID;
byte[] result;
try
{
switch (oid)
{
case NDIS_OID.RSSI:
case NDIS_OID.WEP_STATUS:
case NDIS_OID.BSSID_LIST_SCAN:
case NDIS_OID.AUTHENTICATION_MODE:
case NDIS_OID.INFRASTRUCTURE_MODE:
case NDIS_OID.NETWORK_TYPE_IN_USE:
queryOID = new NDISQueryOid(4); // The data is a four-byte signed int
break;
case NDIS_OID.BSSID:
queryOID = new NDISQueryOid(36);
break;
case NDIS_OID.SUPPORTED_RATES:
queryOID = new NDISQueryOid(8);
break;
case NDIS_OID.CONFIGURATION:
queryOID = new NDISQueryOid(32);
break;
case NDIS_OID.SSID:
queryOID = new NDISQueryOid(36); // The data is a four-byte length plus 32-byte ASCII string
break;
case NDIS_OID.BSSID_LIST:
queryOID = new NDISQueryOid(2000);
break;
default:
throw new NotSupportedException(string.Format("'NDIS_OID_{0}' Not supported", oid.ToString()));
}
byte[] nameBytes = System.Text.Encoding.Unicode.GetBytes(adapterName + '\0');
fixed(byte *pName = &nameBytes[0])
{
queryOID.ptcDeviceName = pName;
queryOID.Oid = (uint)oid;
try
{
ndis.Open(System.IO.FileAccess.ReadWrite, System.IO.FileShare.ReadWrite);
}
catch
{
throw new NetworkInformationException(System.Runtime.InteropServices.Marshal.GetLastWin32Error());
}
try
{
ndis.DeviceIoControl(IOCTL_NDISUIO_QUERY_OID_VALUE, queryOID.getBytes(), queryOID.getBytes());
}
catch (Exception)
{
// if it's an attempt to get a list it might be an OOM
// are we trying to get a list?
if (oid != NDIS_OID.BSSID_LIST)
{
throw new NetworkInformationException();
}
// maybe just an OOM - try again
GC.Collect();
queryOID = new NDISQueryOid(8000);
queryOID.ptcDeviceName = pName;
queryOID.Oid = (uint)oid;
ndis.DeviceIoControl(IOCTL_NDISUIO_QUERY_OID_VALUE, queryOID.getBytes(), queryOID.getBytes());
}
finally
{
ndis.Close();
}
result = new byte[queryOID.Data.Length];
Buffer.BlockCopy(queryOID.Data, 0, result, 0, result.Length);
}
}
finally
{
ndis.Dispose();
}
return(result);
}
/// <summary>
/// Returns objects that describe the network interfaces on the local computer.
/// </summary>
/// <returns>
/// A System.Net.NetworkInformation.NetworkInterface array that contains objects
/// that describe the available network interfaces, or an empty array if no interfaces
/// are detected.
/// </returns>
public unsafe static INetworkInterface[] GetAllNetworkInterfaces()
{
NetworkInterface[] interfaceList;
uint size;
// get buffer size requirement
NativeMethods.GetInterfaceInfo(null, out size);
byte[] ifTable = new byte[size];
// pin the table buffer
fixed(byte *pifTable = ifTable)
{
byte *p = pifTable;
/* table looks like this:
* typedef struct _IP_INTERFACE_INFO {
* LONG NumAdapters;
* IP_ADAPTER_INDEX_MAP Adapter[1];
* } IP_INTERFACE_INFO, *PIP_INTERFACE_INFO;
*
* typedef struct _IP_ADAPTER_INDEX_MAP {
* ULONG Index;
* WCHAR Name [MAX_ADAPTER_NAME];
* } IP_ADAPTER_INDEX_MAP, *PIP_ADAPTER_INDEX_MAP;
*/
// get the table data
NativeMethods.GetInterfaceInfo(pifTable, out size);
// get interface count
int interfaceCount = *p;
interfaceList = new NetworkInterface[interfaceCount];
p += 4;
// get each interface
for (int i = 0; i < interfaceCount; i++)
{
// get interface index
int index = (int)*((int *)p);
p += 4;
// get interface name
byte[] nameBytes = new byte[256];
Marshal.Copy(new IntPtr(p), nameBytes, 0, nameBytes.Length);
string name = Encoding.Unicode.GetString(nameBytes, 0, nameBytes.Length);
int nullIndex = name.IndexOf('\0');
if (nullIndex > 0)
{
name = name.Substring(0, nullIndex);
}
p += 256;
// check the wireless capabilities
try
{
NDISUIO.QueryOID(NDIS_OID.WEP_STATUS, name);
// didn't throw, so it's wireless - determinine if it's WZC compatible
INTF_ENTRY entry;
if (WZC.QueryAdapter(name, out entry) == NativeMethods.NO_ERROR)
{
// this is a WZC wireless adapter
interfaceList[i] = new WirelessZeroConfigNetworkInterface(index, name);
}
else
{
// this is a non-WZC wireless adapter
interfaceList[i] = new WirelessNetworkInterface(index, name);
}
entry.Dispose();
}
catch
{
// if it's not wireless, it will throw and end up here
interfaceList[i] = new NetworkInterface(index, name);
}
}
}
return(interfaceList);
}
