private void IsFriendResponse(XmppClient Client, string Type, XmlNodeList Response, ref StanzaError Error, object State)
{
object[] P = (object[])State;
IsFriendCallback Callback = (IsFriendCallback)P [0];
object State2 = (object)P [1];
string Hash = (string)P [2];
bool IsFriend = false;
bool SecondaryTrustAllowed = false;
string Jid = string.Empty;
XmlElement E;
if (Error != null)
{
Error = null;
}
else if (Response != null)
{
if (Hash != null)
{
this.AddToCache(Hash, Response);
}
foreach (XmlNode N in Response)
{
if (N.LocalName == "isFriendResponse" && (E = N as XmlElement) != null)
{
Jid = XmlUtilities.GetAttribute(E, "jid", string.Empty);
IsFriend = XmlUtilities.GetAttribute(E, "result", false);
SecondaryTrustAllowed = XmlUtilities.GetAttribute(E, "secondaryTrustAllowed", false);
break;
}
}
}
IsFriendEventArgs e = new IsFriendEventArgs(Jid, IsFriend, SecondaryTrustAllowed, State2);
if (Callback != null)
{
try
{
Callback(e);
} catch (Exception ex)
{
Log.Exception(ex);
}
}
}
/// <summary>
/// Determines whether a Jid is a friend of the current device.
/// </summary>
/// <param name="Jid">JID to check.</param>
/// <param name="Callback">Callback method to call, when the response is available.</param>
/// <param name="State">State object to pass on to the response callback.</param>
public void IsFriend(string Jid, IsFriendCallback Callback, object State)
{
Jid = XmppClient.StripResource(Jid);
if (Jid == this.address)
{
if (Callback != null)
{
IsFriendEventArgs e = new IsFriendEventArgs(Jid, true, false, State);
try
{
Callback(e);
} catch (Exception ex)
{
Log.Exception(ex);
}
}
}
else
{
string Xml = "<isFriend xmlns='urn:xmpp:iot:provisioning' jid='" + Jid + "'/>";
string Hash = this.CalcHash(Xml);
StanzaError Error = null;
XmlNodeList Response;
if ((Response = this.GetCachedResponse(Hash)) != null)
{
this.IsFriendResponse(this.client, string.Empty, Response, ref Error, new object[] { Callback, State, null });
}
else
{
this.client.IqGet(Xml, this.address, this.IsFriendResponse, new object[] { Callback, State, Hash }, "Is Friend?");
}
}
}