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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.IdentityModel.Tokens
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IdentityModel.Claims;
using System.IdentityModel.Policy;
using System.IdentityModel.Selectors;
using System.Security.Principal;
public abstract class SamlSubjectStatement : SamlStatement
{
SamlSubject subject;
IAuthorizationPolicy policy;
bool isReadOnly = false;
protected SamlSubjectStatement()
{
}
protected SamlSubjectStatement(SamlSubject samlSubject)
{
if (samlSubject == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSubject"));
this.subject = samlSubject;
}
public SamlSubject SamlSubject
{
get { return this.subject; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
if (value == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("value"));
this.subject = value;
}
}
public override bool IsReadOnly
{
get { return this.isReadOnly; }
}
public override void MakeReadOnly()
{
if (!this.isReadOnly)
{
subject.MakeReadOnly();
this.isReadOnly = true;
}
}
public override IAuthorizationPolicy CreatePolicy(ClaimSet issuer, SamlSecurityTokenAuthenticator samlAuthenticator)
{
if (issuer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("issuer");
// SupportingTokenAuthenticator collection can be null when the Subject does not
// contain a key.
if (this.policy == null)
{
List<ClaimSet> claimSets = new List<ClaimSet>();
ClaimSet subjectKeyClaimset = this.subject.ExtractSubjectKeyClaimSet(samlAuthenticator);
if (subjectKeyClaimset != null)
claimSets.Add(subjectKeyClaimset);
List<Claim> claims = new List<Claim>();
ReadOnlyCollection<Claim> subjectClaims = this.subject.ExtractClaims();
for (int i = 0; i < subjectClaims.Count; ++i)
{
claims.Add(subjectClaims[i]);
}
AddClaimsToList(claims);
claimSets.Add(new DefaultClaimSet(issuer, claims));
this.policy = new UnconditionalPolicy(this.subject.Identity, claimSets.AsReadOnly(), SecurityUtils.MaxUtcDateTime);
}
return this.policy;
}
protected void SetSubject(SamlSubject samlSubject)
{
if (samlSubject == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSubject"));
this.subject = samlSubject;
}
protected abstract void AddClaimsToList(IList<Claim> claims);
}
}
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