/// <summary>
/// Determines whether a control operation can be performed, partially performed or be rejected.
/// </summary>
/// <param name="From">JID from which the request was made.</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>
/// <param name="ServiceToken">Optional service token provided in the request.</param>
/// <param name="DeviceToken">Optional device token provided in the request.</param>
/// <param name="UserToken">Optional user token provided in the request.</param>
/// <param name="Parameters">Control parameters to control.</param>
/// <param name="NodeReferenes">Any node references in the request. Can be null, if none.</param>
public void CanControl(string From, CanControlCallback Callback, object State, string ServiceToken, string DeviceToken, string UserToken, string[] Parameters, NodeReference[] NodeReferences)
{
string BareJid = XmppClient.StripResource(From);
if (BareJid == this.address)
{
if (Callback != null)
{
CanControlEventArgs e = new CanControlEventArgs(BareJid, true, Parameters, NodeReferences, State);
try
{
Callback(e);
} catch (Exception ex)
{
Log.Exception(ex);
}
}
}
else
{
StringBuilder sb = new StringBuilder();
XmlWriter w = XmlWriter.Create(sb, XmlUtilities.GetXmlWriterSettings(false, true, true));
w.WriteStartElement("canControl", "urn:xmpp:iot:provisioning");
w.WriteAttributeString("jid", BareJid);
if (!string.IsNullOrEmpty(ServiceToken))
{
w.WriteAttributeString("serviceToken", ServiceToken);
this.UpdateTokenSource(ServiceToken, From);
}
if (!string.IsNullOrEmpty(DeviceToken))
{
w.WriteAttributeString("deviceToken", DeviceToken);
this.UpdateTokenSource(DeviceToken, From);
}
if (!string.IsNullOrEmpty(UserToken))
{
w.WriteAttributeString("userToken", UserToken);
this.UpdateTokenSource(UserToken, From);
}
if (NodeReferences != null && NodeReferences.Length > 0)
{
foreach (NodeReference Node in NodeReferences)
{
w.WriteStartElement("node");
w.WriteAttributeString("nodeId", Node.NodeId);
if (!string.IsNullOrEmpty(Node.SourceId))
{
w.WriteAttributeString("sourceId", Node.SourceId);
}
if (!string.IsNullOrEmpty(Node.CacheType))
{
w.WriteAttributeString("cacheType", Node.CacheType);
}
w.WriteEndElement();
}
}
if (Parameters != null && Parameters.Length > 0)
{
foreach (string Parameter in Parameters)
{
w.WriteStartElement("parameter");
w.WriteAttributeString("name", Parameter);
w.WriteEndElement();
}
}
w.WriteEndElement();
w.Flush();
string Xml = sb.ToString();
string Hash = this.CalcHash(Xml);
StanzaError Error = null;
XmlNodeList Response;
if ((Response = this.GetCachedResponse(Hash)) != null)
{
this.CanControlResponse(this.client, string.Empty, Response, ref Error, new object[] {
Callback,
State,
null,
Parameters,
NodeReferences
});
}
else
{
this.client.IqGet(Xml, this.address, this.CanControlResponse, new object[] {
Callback,
State,
Hash,
Parameters,
NodeReferences
}, "Can Control?");
}
}
}
private void CanControlResponse(XmppClient Client, string Type, XmlNodeList Response, ref StanzaError Error, object State)
{
object[] P = (object[])State;
CanControlCallback Callback = (CanControlCallback)P [0];
object State2 = (object)P [1];
string Hash = (string)P [2];
string[] Parameters = (string[])P [3];
NodeReference[] NodeReferences = (NodeReference[])P [4];
bool CanControl = 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 == "canControlResponse" && (E = N as XmlElement) != null)
{
CanControl = XmlUtilities.GetAttribute(E, "result", false);
List <NodeReference> Nodes;
List <string> ParameterNames;
ReadoutRequest.ParseNodesAndFieldNames(E, out Nodes, out ParameterNames);
if (Nodes == null)
{
NodeReferences = null;
}
else
{
NodeReferences = Nodes.ToArray();
}
if (ParameterNames == null)
{
Parameters = null;
}
else
{
Parameters = ParameterNames.ToArray();
}
break;
}
}
}
CanControlEventArgs e = new CanControlEventArgs(Jid, CanControl, Parameters, NodeReferences, State2);
if (Callback != null)
{
try
{
Callback(e);
} catch (Exception ex)
{
Log.Exception(ex);
}
}
}
/// <summary>
/// Checks if a control operation can be performed.
/// </summary>
/// <param name="RequestFromBareJid">Readout request came from this bare JID.</param>
/// <param name="Nodes">Any nodes included in the request.</param>
/// <param name="ParameterNames">And parameter names included in the request. If null, all parameter names are requested.</param>
/// <param name="ServiceTokens">Any service tokens provided.</param>
/// <param name="DeviceTokens">Any device tokens provided.</param>
/// <param name="UserTokens">Any user tokens provided.</param>
/// <param name="Callback">Method to call when result is received.</param>
/// <param name="State">State object to pass on to the callback method.</param>
public void CanControl(string RequestFromBareJid, IEnumerable <ThingReference> Nodes, IEnumerable <string> ParameterNames,
string[] ServiceTokens, string[] DeviceTokens, string[] UserTokens, CanControlCallback Callback, object State)
{
if ((!string.IsNullOrEmpty(this.ownerJid) && string.Compare(RequestFromBareJid, this.ownerJid, true) == 0) ||
string.Compare(RequestFromBareJid, this.provisioningServerAddress, true) == 0)
{
if (Callback != null)
{
try
{
ThingReference[] Nodes2 = Nodes as ThingReference[];
if (Nodes2 == null && Nodes != null)
{
List <ThingReference> List = new List <ThingReference>();
List.AddRange(Nodes);
Nodes2 = List.ToArray();
}
string[] ParameterNames2 = ParameterNames as string[];
if (ParameterNames2 == null && ParameterNames != null)
{
List <string> List = new List <string>();
List.AddRange(ParameterNames);
ParameterNames2 = List.ToArray();
}
IqResultEventArgs e0 = new IqResultEventArgs(null, string.Empty, this.client.FullJID, this.provisioningServerAddress, true, State);
CanControlResponseEventArgs e = new CanControlResponseEventArgs(e0, State, RequestFromBareJid, true, Nodes2, ParameterNames2);
Callback(this.client, e);
}
catch (Exception ex)
{
Log.Critical(ex);
}
}
return;
}
StringBuilder Xml = new StringBuilder();
Xml.Append("<canControl xmlns='");
Xml.Append(NamespaceProvisioningDevice);
Xml.Append("' jid='");
Xml.Append(XML.Encode(RequestFromBareJid));
this.AppendTokens(Xml, "st", ServiceTokens);
this.AppendTokens(Xml, "dt", DeviceTokens);
this.AppendTokens(Xml, "ut", UserTokens);
if (Nodes == null && ParameterNames == null)
{
Xml.Append("'/>");
}
else
{
Xml.Append("'>");
if (Nodes != null)
{
foreach (ThingReference Node in Nodes)
{
Xml.Append("<nd id='");
Xml.Append(XML.Encode(Node.NodeId));
if (!string.IsNullOrEmpty(Node.SourceId))
{
Xml.Append("' src='");
Xml.Append(XML.Encode(Node.SourceId));
}
if (!string.IsNullOrEmpty(Node.Partition))
{
Xml.Append("' pt='");
Xml.Append(XML.Encode(Node.Partition));
}
Xml.Append("'/>");
}
}
if (ParameterNames != null)
{
foreach (string ParameterName in ParameterNames)
{
Xml.Append("<parameter name='");
Xml.Append(XML.Encode(ParameterName));
Xml.Append("'/>");
}
}
Xml.Append("</canControl>");
}
this.CachedIqGet(Xml.ToString(), (sender, e) =>
{
XmlElement E = e.FirstElement;
List <ThingReference> Nodes2 = null;
List <string> ParameterNames2 = null;
string Jid = string.Empty;
string NodeId;
string SourceId;
string Partition;
bool CanControl;
if (e.Ok && E.LocalName == "canControlResponse" && E.NamespaceURI == NamespaceProvisioningDevice)
{
CanControl = XML.Attribute(E, "result", false);
foreach (XmlAttribute Attr in E.Attributes)
{
if (Attr.Name == "jid")
{
Jid = Attr.Value;
}
}
foreach (XmlNode N in E.ChildNodes)
{
switch (N.LocalName)
{
case "nd":
if (Nodes2 == null)
{
Nodes2 = new List <ThingReference>();
}
E = (XmlElement)N;
NodeId = XML.Attribute(E, "id");
SourceId = XML.Attribute(E, "src");
Partition = XML.Attribute(E, "pt");
Nodes2.Add(new ThingReference(NodeId, SourceId, Partition));
break;
case "parameter":
if (ParameterNames2 == null)
{
ParameterNames2 = new List <string>();
}
ParameterNames2.Add(XML.Attribute((XmlElement)N, "name"));
break;
}
}
}
else
{
CanControl = false;
}
CanControlResponseEventArgs e2 = new CanControlResponseEventArgs(e, State, Jid, CanControl,
Nodes2?.ToArray(), ParameterNames2?.ToArray());
try
{
Callback(this, e2);
}
catch (Exception ex)
{
Log.Critical(ex);
}
}, null);
}
