/// <summary>
/// Process the SASL reponse message.
/// </summary>
/// <param name="response">The server reponse</param>
/// <returns>
/// The client response.
/// </returns>
/// <exception cref="XmppException">
/// SASL Authrization failed. Incorrect challenge received from server
/// or
/// SASL Authrization failed. Incorrect challenge received from server
/// or
/// SASL Authrization failed. Incorrect challenge received from server
/// </exception>
public SaslResponse ProcessResponse(SaslResponse response)
{
// Verify received Digest-Challenge
// Check that the nonce setting is pressent
if (!this.digestChallenge.ContainsKey("nonce"))
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
// Check that the charset is correct
if (this.digestChallenge.ContainsKey("charset") &&
this.digestChallenge["charset"] != "utf-8")
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
// Check that the mechanims is correct
if (!this.digestChallenge.ContainsKey("algorithm") ||
this.digestChallenge["algorithm"] != "md5-sess")
{
throw new XmppException("SASL Authrization failed. Incorrect challenge received from server");
}
return(new SaslResponse {
Value = this.BuildDigestRespose()
});
}
private void SendStorageRootKey()
{
var response = new SaslResponse {
Response = new ArraySegment <byte>(CreateStorageRootKeyMessage())
};
Negotiator.WriteFrame(response, true);
}
private void SendInterimResponse()
{
var response = new SaslResponse {
Response = new ArraySegment <byte>(EmptyByte)
};
Negotiator.WriteFrame(response, true);
}
private void SendLastResponse()
{
//Notes: The _encodedNonce from service would soon change to non base64 string
var sasBytes = _security.Sign(Convert.FromBase64String(_encodedNonceStringBuilder.ToString()));
var sas = Convert.ToBase64String(sasBytes);
var responseBuffer = new byte[sas.Length + 1];
responseBuffer[0] = 0x0;
Buffer.BlockCopy(Encoding.UTF8.GetBytes(sas), 0, responseBuffer, 1, sas.Length);
var response = new SaslResponse {
Response = new ArraySegment <byte>(responseBuffer)
};
Negotiator.WriteFrame(response, true);
}
private void SendLastResponse()
{
string sas = ProvisioningSasBuilder.ExtractServiceAuthKey(
_security,
_hostName,
_nonceBuffer);
byte[] responseBuffer = new byte[sas.Length + 1];
responseBuffer[0] = 0x0;
Buffer.BlockCopy(Encoding.UTF8.GetBytes(sas), 0, responseBuffer, 1, sas.Length);
var response = new SaslResponse {
Response = new ArraySegment <byte>(responseBuffer)
};
Negotiator.WriteFrame(response, true);
}
public override void OnResponse(SaslResponse response)
{
//This method is only implemented on the server
Debug.Fail("OnResponse is not implemented on client");
}
/// <summary>
/// Process the SASL reponse message.
/// </summary>
/// <param name="response">The server reponse</param>
/// <returns>
/// The client response.
/// </returns>
public SaslResponse ProcessResponse(SaslResponse response)
{
return(null);
}
private Element CreateNode(XmlNodeResult nd, Element parent)
{
string ens;
if (nd.Prefix != null)
{
RemObjects.InternetPack.XMPP.Elements.Attribute at = nd.Attribute.FirstOrDefault(a => a.Prefix == "xmlns" && a.Name == nd.Prefix);
if (at == null)
{
Element el = parent;
ens = string.Empty;
while (el != null)
{
RemObjects.InternetPack.XMPP.Elements.Attribute els = el.Attributes.Where(a => a.Prefix == "xmlns" && a.Name == nd.Prefix).FirstOrDefault();
if (els != null)
{
ens = els.Value;
break;
}
el = el.Parent;
}
}
else
{
ens = at.Value;
}
}
else
{
RemObjects.InternetPack.XMPP.Elements.Attribute at = nd.Attribute.FirstOrDefault(a => a.Prefix == null && a.Name == "xmlns");
if (at == null)
{
ens = string.Empty;
}
else
{
ens = at.Value;
}
}
Element res = null;
switch (ens)
{
case Namespaces.ClientStreamNamespace:
case Namespaces.ServerStreamNamespace:
case "":
if (ens == null && parent != null && parent.Type == ElementType.IQ && nd.Name == "error")
{
res = new IQError();
}
else
{
switch (nd.Name)
{
case "iq":
res = new IQ();
break;
case "presence":
res = new Presence();
break;
case "message":
res = new Message();
break;
}
}
break;
case Namespaces.StreamNamespace:
switch (nd.Name)
{
case "stream":
RemObjects.InternetPack.XMPP.Elements.Attribute att = nd.Attribute.FirstOrDefault(a => a.Prefix == null && a.Name == "xmlns");
if (att == null || att.Value == Namespaces.ClientStreamNamespace)
{
res = new ClientStream();
}
else
{
res = new ServerStream();
}
break;
case "features":
res = new StreamFeatures();
break;
case "error":
res = new StreamError();
break;
}
break;
case Namespaces.StartTLSNamespace:
switch (nd.Name)
{
case "starttls":
res = new StartTLS();
break;
case "failure":
res = new StartTLSFailure();
break;
case "proceed":
res = new StartTLSProceed();
break;
}
break;
case Namespaces.SaslNamespace:
switch (nd.Name)
{
case "mechanisms":
res = new Mechanisms();
break;
case "auth":
res = new SaslAuth();
break;
case "challenge":
res = new SaslChallenge();
break;
case "response":
res = new SaslResponse();
break;
case "abort":
res = new SaslAbort();
break;
case "success":
res = new SaslSuccess();
break;
case "failure":
res = new SaslFailure();
break;
}
break;
}
if (res == null)
{
res = new UnknownElement();
}
else
{
res.Attributes.Clear(); // default ones shouldn't be here during the reading process
}
if (parent != null)
{
res.Parent = parent;
if (parent != fServerRoot)
{
parent.Elements.Add(res);
}
}
res.Prefix = nd.Prefix;
res.Name = nd.Name;
foreach (var el in nd.Attribute)
{
res.Attributes.Add(el);
}
return(res);
}
