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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.IdentityModel.Tokens
{
using System;
using System.Collections.ObjectModel;
using System.Globalization;
using System.IO;
using System.IdentityModel.Claims;
using System.IdentityModel.Policy;
using System.Security.Cryptography;
using System.Security.Principal;
using System.Xml;
using System.Runtime.Serialization;
using System.Collections.Generic;
public class GenericXmlSecurityToken : SecurityToken
{
const int SupportedPersistanceVersion = 1;
string id;
SecurityToken proofToken;
SecurityKeyIdentifierClause internalTokenReference;
SecurityKeyIdentifierClause externalTokenReference;
XmlElement tokenXml;
ReadOnlyCollection<IAuthorizationPolicy> authorizationPolicies;
DateTime effectiveTime;
DateTime expirationTime;
public GenericXmlSecurityToken(
XmlElement tokenXml,
SecurityToken proofToken,
DateTime effectiveTime,
DateTime expirationTime,
SecurityKeyIdentifierClause internalTokenReference,
SecurityKeyIdentifierClause externalTokenReference,
ReadOnlyCollection<IAuthorizationPolicy> authorizationPolicies
)
{
if (tokenXml == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("tokenXml");
}
this.id = GetId(tokenXml);
this.tokenXml = tokenXml;
this.proofToken = proofToken;
this.effectiveTime = effectiveTime.ToUniversalTime();
this.expirationTime = expirationTime.ToUniversalTime();
this.internalTokenReference = internalTokenReference;
this.externalTokenReference = externalTokenReference;
this.authorizationPolicies = authorizationPolicies ?? EmptyReadOnlyCollection<IAuthorizationPolicy>.Instance;
}
public override string Id
{
get { return this.id; }
}
public override DateTime ValidFrom
{
get { return this.effectiveTime; }
}
public override DateTime ValidTo
{
get { return this.expirationTime; }
}
public SecurityKeyIdentifierClause InternalTokenReference
{
get { return this.internalTokenReference; }
}
public SecurityKeyIdentifierClause ExternalTokenReference
{
get { return this.externalTokenReference; }
}
public XmlElement TokenXml
{
get { return this.tokenXml; }
}
public SecurityToken ProofToken
{
get { return this.proofToken; }
}
public ReadOnlyCollection<IAuthorizationPolicy> AuthorizationPolicies
{
get { return this.authorizationPolicies; }
}
public override ReadOnlyCollection<SecurityKey> SecurityKeys
{
get
{
if (this.proofToken != null)
return this.proofToken.SecurityKeys;
else
return EmptyReadOnlyCollection<SecurityKey>.Instance;
}
}
public override string ToString()
{
StringWriter writer = new StringWriter(CultureInfo.InvariantCulture);
writer.WriteLine("Generic XML token:");
writer.WriteLine(" validFrom: {0}", this.ValidFrom);
writer.WriteLine(" validTo: {0}", this.ValidTo);
if (this.internalTokenReference != null)
writer.WriteLine(" InternalTokenReference: {0}", this.internalTokenReference);
if (this.externalTokenReference != null)
writer.WriteLine(" ExternalTokenReference: {0}", this.externalTokenReference);
writer.WriteLine(" Token Element: ({0}, {1})", this.tokenXml.LocalName, this.tokenXml.NamespaceURI);
return writer.ToString();
}
static string GetId(XmlElement tokenXml)
{
if (tokenXml != null)
{
string id = tokenXml.GetAttribute(UtilityStrings.IdAttribute, UtilityStrings.Namespace);
if ( string.IsNullOrEmpty( id ) )
{
// special case SAML 1.1 as this is the only possible ID as
// spec is closed. SAML 2.0 is xs:ID
id = tokenXml.GetAttribute("AssertionID");
// if we are still null, "Id"
if ( string.IsNullOrEmpty( id ) )
{
id = tokenXml.GetAttribute("Id");
}
//This fixes the unecnrypted SAML 2.0 case. Eg: <Assertion ID="_05955298-214f-41e7-b4c3-84dbff7f01b9"
if (string.IsNullOrEmpty(id))
{
id = tokenXml.GetAttribute("ID");
}
}
if ( !string.IsNullOrEmpty(id) )
{
return id;
}
}
return null;
}
public override bool CanCreateKeyIdentifierClause<T>()
{
if (this.internalTokenReference != null && typeof(T) == this.internalTokenReference.GetType())
return true;
if (this.externalTokenReference != null && typeof(T) == this.externalTokenReference.GetType())
return true;
return false;
}
public override T CreateKeyIdentifierClause<T>()
{
if (this.internalTokenReference != null && typeof(T) == this.internalTokenReference.GetType())
return (T)this.internalTokenReference;
if (this.externalTokenReference != null && typeof(T) == this.externalTokenReference.GetType())
return (T)this.externalTokenReference;
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.UnableToCreateTokenReference)));
}
public override bool MatchesKeyIdentifierClause(SecurityKeyIdentifierClause keyIdentifierClause)
{
if (this.internalTokenReference != null && this.internalTokenReference.Matches(keyIdentifierClause))
{
return true;
}
else if (this.externalTokenReference != null && this.externalTokenReference.Matches(keyIdentifierClause))
{
return true;
}
return false;
}
}
}
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