/// <summary>
/// Override of the base class that reads a child element inside the RST
/// </summary>
/// <param name="reader">Reader pointing at an element to read inside the RST.</param>
/// <param name="rst">The RequestSecurityToken element that is being populated from the reader.</param>
/// <param name="context">Current Serialization context.</param>
/// <exception cref="ArgumentNullException">Either reader or rst or context parameter is null.</exception>
/// <exception cref="WSTrustSerializationException">Unable to deserialize the current parameter.</exception>
public override void ReadXmlElement(XmlReader reader, RequestSecurityToken rst, WSTrustSerializationContext context)
{
if (reader == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader");
}
if (rst == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("rst");
}
if (context == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
}
// special case SecondaryParameters, they cannot be embeded as per WS-Trust 1.3
if (reader.IsStartElement(WSTrust13Constants.ElementNames.SecondaryParameters, WSTrust13Constants.NamespaceURI))
{
rst.SecondaryParameters = this.ReadSecondaryParameters(reader, context);
return;
}
if (reader.IsStartElement(WSTrust13Constants.ElementNames.KeyWrapAlgorithm, WSTrust13Constants.NamespaceURI))
{
rst.KeyWrapAlgorithm = reader.ReadElementContentAsString();
if (!UriUtil.CanCreateValidUri(rst.KeyWrapAlgorithm, UriKind.Absolute))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new WSTrustSerializationException(SR.GetString(SR.ID3135, WSTrust13Constants.ElementNames.KeyWrapAlgorithm, WSTrust13Constants.NamespaceURI, rst.KeyWrapAlgorithm)));
}
return;
}
if (reader.IsStartElement(WSTrust13Constants.ElementNames.ValidateTarget, WSTrust13Constants.NamespaceURI))
{
if (!reader.IsEmptyElement)
{
rst.ValidateTarget = new SecurityTokenElement(WSTrustSerializationHelper.ReadInnerXml(reader), context.SecurityTokenHandlers);
}
if (rst.ValidateTarget == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new WSTrustSerializationException(SR.GetString(SR.ID3221)));
}
return;
}
WSTrustSerializationHelper.ReadRSTXml(reader, rst, context, WSTrustConstantsAdapter.Trust13);
}
/// <summary>
/// Special case for reading SecondaryParameters inside a WS-Trust 1.3 RST. The specification states that a SecondaryParameters element
/// cannot be inside a SecondaryParameters element. Override this method to provide custom processing.
/// </summary>
/// <param name="reader">Reader pointing at the SecondaryParameters element inside the RST.</param>
/// <param name="context">Current Serialization context.</param>
/// <exception cref="ArgumentNullException">Either reader or context parameter is null.</exception>
/// <exception cref="WSTrustSerializationException">An inner 'SecondaryParameter' element was found while processing the outer 'SecondaryParameter'.</exception>
/// <returns>RequestSecurityToken that contains the SecondaryParameters found in the RST</returns>
protected virtual RequestSecurityToken ReadSecondaryParameters(
XmlReader reader,
WSTrustSerializationContext context)
{
RequestSecurityToken secondaryParameters = CreateRequestSecurityToken();
if (reader.IsEmptyElement)
{
reader.Read();
reader.MoveToContent();
return(secondaryParameters);
}
reader.ReadStartElement();
while (reader.IsStartElement())
{
if (reader.IsStartElement(
WSTrust13Constants.ElementNames.KeyWrapAlgorithm, WSTrust13Constants.NamespaceURI))
{
secondaryParameters.KeyWrapAlgorithm = reader.ReadElementContentAsString();
if (!UriUtil.CanCreateValidUri(secondaryParameters.KeyWrapAlgorithm, UriKind.Absolute))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new WSTrustSerializationException(
SR.GetString(
SR.ID3135,
WSTrust13Constants.ElementNames.KeyWrapAlgorithm,
WSTrust13Constants.NamespaceURI,
secondaryParameters.KeyWrapAlgorithm)));
}
}
else if (reader.IsStartElement(
WSTrust13Constants.ElementNames.SecondaryParameters, WSTrust13Constants.NamespaceURI))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new WSTrustSerializationException(SR.GetString(SR.ID3130)));
}
else
{
WSTrustSerializationHelper.ReadRSTXml(
reader,
secondaryParameters,
context,
WSTrustConstantsAdapter.GetConstantsAdapter(reader.NamespaceURI) ?? WSTrustConstantsAdapter.TrustFeb2005);
}
}
reader.ReadEndElement();
return(secondaryParameters);
}
/// <summary>
/// Writes out the supported elements on the request object. Override this method if someone
/// has sub-class the RequestSecurityToken class and added more property to it.
/// </summary>
/// <param name="rst">The request instance</param>
/// <param name="writer">The writer to write to</param>
/// <param name="context">Current Serialization context.</param>
/// <exception cref="ArgumentNullException">Either rst or writer or context parameter is null.</exception>
public override void WriteKnownRequestElement(RequestSecurityToken rst, XmlWriter writer, WSTrustSerializationContext context)
{
if (rst == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("rst");
}
if (writer == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writer");
}
if (context == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("context");
}
// Write out the exisiting ones
WSTrustSerializationHelper.WriteKnownRequestElement(rst, writer, context, this, WSTrustConstantsAdapter.Trust13);
// Specific to WS-Trust 13
if (!string.IsNullOrEmpty(rst.KeyWrapAlgorithm))
{
if (!UriUtil.CanCreateValidUri(rst.KeyWrapAlgorithm, UriKind.Absolute))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new WSTrustSerializationException(SR.GetString(SR.ID3135, WSTrust13Constants.ElementNames.KeyWrapAlgorithm, WSTrust13Constants.NamespaceURI, rst.KeyWrapAlgorithm)));
}
this.WriteXmlElement(writer, WSTrust13Constants.ElementNames.KeyWrapAlgorithm, rst.KeyWrapAlgorithm, rst, context);
}
if (rst.SecondaryParameters != null)
{
this.WriteXmlElement(writer, WSTrust13Constants.ElementNames.SecondaryParameters, rst.SecondaryParameters, rst, context);
}
if (rst.ValidateTarget != null)
{
this.WriteXmlElement(writer, WSTrust13Constants.ElementNames.ValidateTarget, rst.ValidateTarget, rst, context);
}
}