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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.Claims;
using System.IdentityModel.Selectors;
using System.Runtime.Serialization;
using System.Xml;
using System.Xml.Serialization;
public class SamlAuthorizationDecisionStatement : SamlSubjectStatement
{
SamlEvidence evidence;
readonly ImmutableCollection<SamlAction> actions = new ImmutableCollection<SamlAction>();
SamlAccessDecision accessDecision;
string resource;
bool isReadOnly = false;
public SamlAuthorizationDecisionStatement()
{
}
public SamlAuthorizationDecisionStatement(SamlSubject samlSubject, string resource, SamlAccessDecision accessDecision, IEnumerable<SamlAction> samlActions)
: this(samlSubject, resource, accessDecision, samlActions, null)
{
}
public SamlAuthorizationDecisionStatement(SamlSubject samlSubject, string resource, SamlAccessDecision accessDecision, IEnumerable<SamlAction> samlActions, SamlEvidence samlEvidence)
: base(samlSubject)
{
if (samlActions == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlActions"));
foreach (SamlAction action in samlActions)
{
if (action == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLEntityCannotBeNullOrEmpty, XD.SamlDictionary.Action.Value));
this.actions.Add(action);
}
this.evidence = samlEvidence;
this.accessDecision = accessDecision;
this.resource = resource;
CheckObjectValidity();
}
public static string ClaimType
{
get
{
return ClaimTypes.AuthorizationDecision;
}
}
public IList<SamlAction> SamlActions
{
get { return this.actions; }
}
public SamlAccessDecision AccessDecision
{
get { return this.accessDecision; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
this.accessDecision = value;
}
}
public SamlEvidence Evidence
{
get { return this.evidence; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
this.evidence = value;
}
}
public string Resource
{
get { return this.resource; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
if (string.IsNullOrEmpty(value))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAuthorizationDecisionResourceRequired));
this.resource = value;
}
}
public override bool IsReadOnly
{
get { return this.isReadOnly; }
}
public override void MakeReadOnly()
{
if (!this.isReadOnly)
{
if (this.evidence != null)
this.evidence.MakeReadOnly();
foreach (SamlAction action in this.actions)
{
action.MakeReadOnly();
}
this.actions.MakeReadOnly();
this.isReadOnly = true;
}
}
protected override void AddClaimsToList(IList<Claim> claims)
{
if (claims == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("claims"));
for (int i = 0; i < this.actions.Count; ++i)
{
claims.Add(new Claim(ClaimTypes.AuthorizationDecision, new SamlAuthorizationDecisionClaimResource(this.resource, this.accessDecision, this.actions[i].Namespace, this.actions[i].Action), Rights.PossessProperty));
}
}
void CheckObjectValidity()
{
if (this.SamlSubject == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLSubjectStatementRequiresSubject)));
if (string.IsNullOrEmpty(this.resource))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionResourceRequired)));
if (this.actions.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionShouldHaveOneAction)));
}
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;
this.resource = reader.GetAttribute(dictionary.Resource, null);
if (string.IsNullOrEmpty(this.resource))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionStatementMissingResourceAttributeOnRead)));
string decisionString = reader.GetAttribute(dictionary.Decision, null);
if (string.IsNullOrEmpty(decisionString))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionStatementMissingDecisionAttributeOnRead)));
if (decisionString.Equals(SamlAccessDecision.Deny.ToString(), StringComparison.OrdinalIgnoreCase))
this.accessDecision = SamlAccessDecision.Deny;
else if (decisionString.Equals(SamlAccessDecision.Permit.ToString(), StringComparison.OrdinalIgnoreCase))
this.accessDecision = SamlAccessDecision.Permit;
else
accessDecision = SamlAccessDecision.Indeterminate;
reader.MoveToContent();
reader.Read();
if (reader.IsStartElement(dictionary.Subject, dictionary.Namespace))
{
SamlSubject subject = new SamlSubject();
subject.ReadXml(reader, samlSerializer, keyInfoSerializer, outOfBandTokenResolver);
base.SamlSubject = subject;
}
else
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionStatementMissingSubjectOnRead)));
while (reader.IsStartElement())
{
if (reader.IsStartElement(dictionary.Action, dictionary.Namespace))
{
SamlAction action = new SamlAction();
action.ReadXml(reader, samlSerializer, keyInfoSerializer, outOfBandTokenResolver);
this.actions.Add(action);
}
else if (reader.IsStartElement(dictionary.Evidence, dictionary.Namespace))
{
if (this.evidence != null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionHasMoreThanOneEvidence)));
this.evidence = new SamlEvidence();
this.evidence.ReadXml(reader, samlSerializer, keyInfoSerializer, outOfBandTokenResolver);
}
else
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLBadSchema, dictionary.AuthorizationDecisionStatement)));
}
if (this.actions.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAuthorizationDecisionShouldHaveOneActionOnRead)));
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.AuthorizationDecisionStatement, dictionary.Namespace);
writer.WriteStartAttribute(dictionary.Decision, null);
writer.WriteString(this.accessDecision.ToString());
writer.WriteEndAttribute();
writer.WriteStartAttribute(dictionary.Resource, null);
writer.WriteString(this.resource);
writer.WriteEndAttribute();
this.SamlSubject.WriteXml(writer, samlSerializer, keyInfoSerializer);
foreach (SamlAction action in this.actions)
action.WriteXml(writer, samlSerializer, keyInfoSerializer);
if (this.evidence != null)
this.evidence.WriteXml(writer, samlSerializer, keyInfoSerializer);
writer.WriteEndElement();
}
}
}
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