void HandleWriteData(StanzaIQ Request)
{
XElement WriteDataElement = Request.Payload.Elements().First();
try
{
List <ResourceAccess> LimitedAccess = GetAccessRights(Request.From, LWTSD.GetAccessToken(WriteDataElement));
int NrWrittenValues = 0;
foreach (XElement WriteElement in WriteDataElement.Elements(LWTSD.Namespace + "write"))
{
ResourcePath Path = WriteElement.Attribute("resource-path").Value;
if (!ResourceAccess.AllowsWrite(LimitedAccess, Path))
{
throw new AccessViolation();
}
if (!Resources.ContainsKey(Path))
{
throw new InvalidOperationException("Path does not exist: " + Path); // todo: explicit type to make it possible to set correct error code
}
Resource Res = Resources[Path];
if (!Res.SupportsWrite)
{
throw new InvalidOperationException("Resource is not writeable: " + Path); // todo: explicit type to make it possible to set correct error code
}
Res.LoadFromWrite(WriteElement);
NrWrittenValues++;
}
if (NrWrittenValues == 0)
{
throw new Exception("No values found");
}
StanzaIQ Response = new StanzaIQ(StanzaIQ.StanzaIQType.Result);
Response.ID = Request.ID;
Response.To = Request.From;
Uplink.SendStanza(Response);
}
catch (System.Exception ex)
{
StanzaIQ ErrorResponse = new StanzaIQ(StanzaIQ.StanzaIQType.Error);
ErrorResponse.ID = Request.ID;
ErrorResponse.To = Request.From;
XElement ErroReasonElement = new XElement(LWTSD.Namespace + "errorreason");
ErroReasonElement.SetAttributeValue("reason", ErrorReason.InvalidData);
ErroReasonElement.Value = ex.ToString();
ErrorResponse.Payload.Add(ErroReasonElement);
Uplink.SendStanza(ErrorResponse);
}
}
void HandleSubscribe(StanzaIQ Request)
{
XElement SubscribeElement = Request.Payload.Elements().First();
try
{
string AccessToken = LWTSD.GetAccessToken(SubscribeElement);
List <ResourceAccess> LimitedAccess = GetAccessRights(Request.From, AccessToken);
Subscriber Subscription = new Subscriber();
Subscription.SubscriptionID = SubscribeElement.Attribute("subscriptionid").Value;
Subscription.SubscriberAddress = Request.From;
Subscription.AccessToken = AccessToken;
foreach (XElement WriteElement in SubscribeElement.Elements(LWTSD.Namespace + "trigger"))
{
ResourcePath Path = WriteElement.Attribute("onresource").Value;
if (!ResourceAccess.AllowsRead(LimitedAccess, Path))
{
throw new AccessViolation();
}
if (!Resources.ContainsKey(Path))
{
throw new InvalidOperationException("Path does not exist: " + Path); // todo: explicit type to make it possible to set correct error code
}
Resource Res = Resources[Path];
if (!Res.SupportsRead)
{
throw new InvalidOperationException("Resource is not readable: " + Path); // todo: explicit type to make it possible to set correct error code
}
ResourceSubscription Trigger = new ResourceSubscription()
{
Path = Path
};
Subscription.Triggers.Add(Trigger);
}
if (Subscription.Triggers.Count == 0)
{
throw new InvalidOperationException("No triggers");
}
Subscribers[GetSafeSubscriptionID(Request.From, Subscription.SubscriptionID)] = Subscription;
StanzaIQ Response = new StanzaIQ(StanzaIQ.StanzaIQType.Result);
Response.ID = Request.ID;
Response.To = Request.From;
Uplink.SendStanza(Response);
}
catch (System.Exception ex)
{
StanzaIQ ErrorResponse = new StanzaIQ(StanzaIQ.StanzaIQType.Error);
ErrorResponse.ID = Request.ID;
ErrorResponse.To = Request.From;
XElement ErroReasonElement = new XElement(LWTSD.Namespace + "errorreason");
ErroReasonElement.SetAttributeValue("reason", ErrorReason.InvalidData);
ErroReasonElement.Value = ex.ToString();
ErrorResponse.Payload.Add(ErroReasonElement);
Uplink.SendStanza(ErrorResponse);
}
}