/// <summary>
/// Removes a network from the adapter's preferred list
/// </summary>
/// <param name="SSID">The SSID of the network to remove</param>
public bool RemovePreferredNetwork(string SSID)
{
if ((SSID == null) || (SSID == string.Empty))
{
throw new ArgumentException("Invalid SSID");
}
// Get the current preferred list of SSID values.
// First, we need to get an INTF_ENTRY for this adapter.
INTF_ENTRY entry;
int uret = WZC.QueryAdapter(this.Name, out entry);
try
{
if (uret > 0)
{
// There is no list. Return false.
return(false);
}
// Find the indicated item and remove it from
// the list by creating a new list and setting
// that as the preferred list.
RAW_DATA rdold = entry.rdStSSIDList;
WLANConfigurationList prefl = new WLANConfigurationList(rdold);
// If there are no items in the list, return false.
if (prefl.NumberOfItems == 0)
{
return(false);
}
// Build the new list.
WLANConfigurationList prefnew = new WLANConfigurationList(prefl.NumberOfItems - 1);
// Start at the top of the old list and copy items
// from old to new, until we find the item to be
// removed.
int j = 0;
int i;
for (i = 0; i < prefl.NumberOfItems; i++)
{
WLANConfiguration item = prefl.Item(i);
if (item.SSID == SSID)
{
// Skip to next item without incrementing
// j.
}
else
{
prefnew.SetItem(j, item);
j++;
}
}
// Check for whether the item was found in the
// list or not. If not, we don't reset the
// wireless settings and instead return false.
if (j == i)
{
return(false);
}
// Replace the old list with the new one
// for the rest of the code. Entry #0
// is unset.
prefl = prefnew;
// Must now copy the new preferred list to the entry that
// we will send with WZCSetInterface.
entry.rdStSSIDList = prefl.rawData;
// Finally, we are ready to select the new SSID as our
// primary preferred connection.
uret = WZC.SetAdapter(entry, INTF_FLAGS.INTF_ALL_FLAGS | INTF_FLAGS.INTF_PREFLIST);
if (uret != 0)
{
throw new System.ComponentModel.Win32Exception(uret, "Unable to Set WZC Interface");
}
}
finally
{
entry.Dispose();
}
return(uret <= 0);
}
/// <summary>
/// Connects to an already-configured wireless network by SSID
/// </summary>
/// <param name="SSID"></param>
/// <returns></returns>
public bool ConnectToPreferredNetwork(string SSID)
{
INTF_ENTRY entry;
int uret = WZC.QueryAdapter(this.Name, out entry);
try
{
if (uret != 0)
{
throw new System.ComponentModel.Win32Exception(uret, "Unable to Query WZC Interface");
}
// We need to push the indicated item to the top of the
// preferred list. Once we do that and call WZCSetInterface
// the connection will be established to that SSID.
// The preferred list is in the rdStSSIDList field.
RAW_DATA rdold = entry.rdStSSIDList;
WLANConfigurationList prefl = new WLANConfigurationList(rdold);
// Start at the bottom of the list. If the current item
// is the one we want to copy, save it and start copying
// items down in the list.
WLANConfiguration targetItem = null;
int i;
for (i = (int)prefl.NumberOfItems - 1; i >= 0; i--)
{
targetItem = prefl.Item(i);
if (targetItem.SSID == SSID)
{
break;
}
}
// If we get no match for our SSID value, the item is *not*
// in the preferred list. Return false.
if (targetItem == null)
{
return(false);
}
// If the SSID is already first in the list, we're done.
if (i > 0)
{
// Now, copy the rest of the items one place down in the
// list.
for (int j = i; j >= 1; j--)
{
// Copy old list item j-1 to new list item j.
prefl.SetItem(j, prefl.Item(j - 1));
}
// Put the saved target item in index 0 in the new list.
prefl.SetItem(0, targetItem);
}
uret = WZC.SetAdapter(entry, INTF_FLAGS.INTF_ALL_FLAGS | INTF_FLAGS.INTF_PREFLIST);
if (uret != 0)
{
throw new System.ComponentModel.Win32Exception(uret, "Unable to Set WZC Interface");
}
}
finally
{
entry.Dispose();
}
return(true);
}
/// <summary>
/// Sets wireless settings associated with a given interface and AP, adding to, rather than replacing the preferred list of APs. This version of the
/// method is designed for the case where *all* of the options are going to be set, where no initial configuration exists at all and where existing
/// items in the preferred list should be maintained. After this method executes, if it is successful, the specified SSID will be at the top, highest-
/// priority, end of the preferred list.
/// </summary>
/// <param name="SSID">
/// Target SSID to connect
/// </param>
/// <param name="infrastructureMode">
/// Is infrastructure
/// </param>
/// <param name="authKey">
/// WEP key or WPA shared key string representing hex string (each two characters are converted to a single byte)
/// </param>
/// <param name="keyIndex">
/// Index of the WEP key. Valid values are 1-4
/// </param>
/// <param name="authMode">
/// Authentication mode for the connection
/// </param>
/// <param name="privacyMode">
/// Privacy (encryption) mode for the connection
/// </param>
/// <param name="eapParams">
/// Parameters describing how the connection should use EAP to authenticate the user to the network
/// </param>
/// <returns>true if succeeded</returns>
#endregion
public bool AddPreferredNetwork(string SSID,
bool infrastructureMode,
string authKey,
int keyIndex,
AuthenticationMode authMode,
WEPStatus privacyMode,
EAPParameters eapParams)
{
if ((keyIndex <= 0) || (keyIndex > 4))
{
throw new ArgumentException("Invalid keyIndex (must be between 1 and 4)");
}
if ((SSID == null) || (SSID == string.Empty))
{
throw new ArgumentException("Invalid SSID");
}
// We may yet need to do some processing on the key,
// if it is a WPA key. We need a WZC_WLAN_CONFIG
// structure to pass to the WZC routine that does
// this processing, however, so that is done below.
// Get the current preferred list of SSID values.
// First, we need to get an INTF_ENTRY for this adapter.
INTF_ENTRY entry;
int uret = WZC.QueryAdapter(this.Name, out entry);
try
{
if (uret != 0)
{
throw new System.ComponentModel.Win32Exception(uret, "No preferred list found");
}
// We need to push the indicated item to the top of the
// preferred list. Once we do that and call WZCSetInterface
// the connection will be established to that SSID.
// The preferred list is in the rdStSSIDList field.
RAW_DATA rdold = entry.rdStSSIDList;
WLANConfigurationList prefl = new WLANConfigurationList(rdold);
// Start at the bottom of the list. If the current item
// is the one we want to copy, save it and start copying
// items down in the list.
WLANConfiguration targetItem = null;
int i;
for (i = (int)prefl.NumberOfItems - 1; i >= 0; i--)
{
targetItem = prefl.Item(i);
if (targetItem.SSID == SSID)
{
break;
}
}
// If we get no match for our SSID value, the item
// is *not* in the preferred list, so we can
// skip removing it.
if (i >= 0)
{
// Now, copy the items before i on the
// list down to cover i. This leaves
// position 0 in the list as a copy of
// position 1. We'll fill in position 0
// with the new most-preferred SSID.
for (int j = i; j >= 1; j--)
{
// Copy old list item j-1 to new list item j.
prefl.SetItem(j, prefl.Item(j - 1));
}
}
else
{
// The item was not in the list. We have
// to expand the list and move all of
// the original items down one spot.
WLANConfigurationList prefl2 = new WLANConfigurationList(prefl.NumberOfItems + 1);
for (int j = 0; j < (int)prefl.NumberOfItems; j++)
{
// Copy from old list to new list.
prefl2.SetItem(j + 1, prefl.Item(j));
}
// Replace the old list with the new one
// for the rest of the code. Entry #0
// is unset.
prefl = prefl2;
}
// Create a new item and put that in the list
// at item #0, which presently exists but
// doesn't mean anything (it's either a
// totally blank item, if the SSID was not
// in the list before the call, or it's the
// old first item in the list).
// Unlike the other SetWirelessSettings versions,
// we *don't* get the current configuration here;
// our parameters will set that.
WLANConfiguration thisConfig = MakeSSIDEntry(SSID, infrastructureMode, authKey, keyIndex, authMode, privacyMode, eapParams);
// OK, finally, set the item in the preferred
// list according to the parameters to this
// call.
prefl.SetItem(0, thisConfig);
// Must now copy the new preferred list to the entry that
// we will sent with WZCSetInterface.
entry.rdStSSIDList = prefl.rawData;
// Finally, we are ready to select the new SSID as our
// primary preferred connection.
uret = WZC.SetAdapter(entry, INTF_FLAGS.INTF_PREFLIST);
if (uret != 0)
{
throw new System.ComponentModel.Win32Exception(uret, "Unable to Set WZC Interface");
}
}
finally
{
entry.Dispose();
}
return(true);
}
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 = m_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.m_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;
WLANConfigurationList cl = new WLANConfigurationList(rd);
// Step through the list and add a new AP to the
// collection for each entry.
for (int i = 0; i < cl.NumberOfItems; i++)
{
WLANConfiguration c = cl.Item(i);
//Debug.WriteLine(c.SSID);
//for (int d = 1; d <= c.Data.Length; d++)
//{
// Debug.Write(string.Format("{0:x2}{1}", c.Data[d - 1], (d%8 == 0) ? "\r\n" : " "));
//}
//Debug.WriteLine(string.Empty);
// 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(c.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.
c.Rssi = ss;
// Create the AP instance and add it to the
// preferred list.
AccessPoint ap = new AccessPoint(c);
m_aps.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(c);
m_aps.Add(ap);
}
}
// Dispose of INTF_ENTRY
ie.Dispose();
}
