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using System.IdentityModel.Tokens;
using System.Xml;
namespace System.IdentityModel.Tokens
{
public class GenericXmlSecurityKeyIdentifierClause : SecurityKeyIdentifierClause
{
XmlElement referenceXml;
public GenericXmlSecurityKeyIdentifierClause(XmlElement referenceXml)
: this(referenceXml, null, 0)
{
}
public GenericXmlSecurityKeyIdentifierClause(XmlElement referenceXml, byte[] derivationNonce, int derivationLength)
: base(null, derivationNonce, derivationLength)
{
if (referenceXml == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("referenceXml");
}
this.referenceXml = referenceXml;
}
public XmlElement ReferenceXml
{
get { return this.referenceXml; }
}
public override bool Matches(SecurityKeyIdentifierClause keyIdentifierClause)
{
GenericXmlSecurityKeyIdentifierClause that = keyIdentifierClause as GenericXmlSecurityKeyIdentifierClause;
// PreSharp Bug: Parameter 'that' to this public method must be validated: A null-dereference can occur here.
#pragma warning suppress 56506
return ReferenceEquals(this, that) || (that != null && that.Matches(this.ReferenceXml));
}
private bool Matches(XmlElement xmlElement)
{
if (xmlElement == null)
return false;
return CompareNodes(this.referenceXml, xmlElement);
}
private bool CompareNodes(XmlNode originalNode, XmlNode newNode)
{
if (originalNode.OuterXml == newNode.OuterXml)
return true;
if (originalNode.LocalName != newNode.LocalName || originalNode.InnerText != newNode.InnerText)
return false;
if (originalNode.InnerXml == newNode.InnerXml)
return true;
if (originalNode.HasChildNodes)
{
if (!newNode.HasChildNodes || originalNode.ChildNodes.Count != newNode.ChildNodes.Count)
return false;
bool childrenStatus = true;
for (int i = 0; i < originalNode.ChildNodes.Count; i++)
{
childrenStatus = childrenStatus & CompareNodes(originalNode.ChildNodes[i], newNode.ChildNodes[i]);
}
return childrenStatus;
}
else if (newNode.HasChildNodes)
return false;
return true;
}
}
}
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