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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.IdentityModel.Tokens
{
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.IdentityModel;
using System.IdentityModel.Selectors;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
public class SamlAudienceRestrictionCondition : SamlCondition
{
readonly ImmutableCollection<Uri> audiences = new ImmutableCollection<Uri>();
bool isReadOnly = false;
public SamlAudienceRestrictionCondition(IEnumerable<Uri> audiences)
{
if (audiences == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("audiences"));
foreach (Uri audience in audiences)
{
if (audience == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLEntityCannotBeNullOrEmpty, XD.SamlDictionary.Audience.Value));
this.audiences.Add(audience);
}
CheckObjectValidity();
}
public SamlAudienceRestrictionCondition()
{
}
public IList<Uri> Audiences
{
get { return this.audiences; }
}
public override bool IsReadOnly
{
get { return this.isReadOnly; }
}
public override void MakeReadOnly()
{
if (!this.isReadOnly)
{
this.audiences.MakeReadOnly();
this.isReadOnly = true;
}
}
void CheckObjectValidity()
{
if (this.audiences.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAudienceRestrictionShouldHaveOneAudience)));
}
public override void ReadXml(XmlDictionaryReader reader, SamlSerializer samlSerializer, SecurityTokenSerializer keyInfoSerializer, SecurityTokenResolver outOfBandTokenResolver)
{
if (reader == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("reader"));
if (samlSerializer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSerializer"));
#pragma warning suppress 56506 // samlSerializer.DictionaryManager is never null.
SamlDictionary dictionary = samlSerializer.DictionaryManager.SamlDictionary;
reader.MoveToContent();
reader.Read();
while (reader.IsStartElement())
{
if (reader.IsStartElement(dictionary.Audience, dictionary.Namespace))
{
reader.MoveToContent();
string audience = reader.ReadString();
if (string.IsNullOrEmpty(audience))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAudienceRestrictionInvalidAudienceValueOnRead)));
this.audiences.Add(new Uri(audience));
reader.MoveToContent();
reader.ReadEndElement();
}
else
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLBadSchema, dictionary.AudienceRestrictionCondition.Value)));
}
}
if (this.audiences.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAudienceRestrictionShouldHaveOneAudienceOnRead)));
reader.MoveToContent();
reader.ReadEndElement();
}
public override void WriteXml(XmlDictionaryWriter writer, SamlSerializer samlSerializer, SecurityTokenSerializer keyInfoSerializer)
{
CheckObjectValidity();
if (writer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("writer"));
if (samlSerializer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSerializer"));
#pragma warning suppress 56506 // samlSerializer.DictionaryManager is never null.
SamlDictionary dictionary = samlSerializer.DictionaryManager.SamlDictionary;
writer.WriteStartElement(dictionary.PreferredPrefix.Value, dictionary.AudienceRestrictionCondition, dictionary.Namespace);
for (int i = 0; i < this.audiences.Count; i++)
{
writer.WriteElementString(dictionary.Audience, dictionary.Namespace, this.audiences[i].AbsoluteUri);
}
writer.WriteEndElement();
}
}
}
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