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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.IdentityModel.Policy
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IdentityModel.Claims;
using System.Security.Principal;
interface IIdentityInfo
{
IIdentity Identity { get; }
}
class UnconditionalPolicy : IAuthorizationPolicy, IDisposable
{
SecurityUniqueId id;
ClaimSet issuer;
ClaimSet issuance;
ReadOnlyCollection<ClaimSet> issuances;
DateTime expirationTime;
IIdentity primaryIdentity;
bool disposable = false;
bool disposed = false;
public UnconditionalPolicy(ClaimSet issuance)
: this(issuance, SecurityUtils.MaxUtcDateTime)
{
}
public UnconditionalPolicy(ClaimSet issuance, DateTime expirationTime)
{
if (issuance == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("issuance");
Initialize(ClaimSet.System, issuance, null, expirationTime);
}
public UnconditionalPolicy(ReadOnlyCollection<ClaimSet> issuances, DateTime expirationTime)
{
if (issuances == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("issuances");
Initialize(ClaimSet.System, null, issuances, expirationTime);
}
internal UnconditionalPolicy(IIdentity primaryIdentity, ClaimSet issuance)
: this(issuance)
{
this.primaryIdentity = primaryIdentity;
}
internal UnconditionalPolicy(IIdentity primaryIdentity, ClaimSet issuance, DateTime expirationTime)
: this(issuance, expirationTime)
{
this.primaryIdentity = primaryIdentity;
}
internal UnconditionalPolicy(IIdentity primaryIdentity, ReadOnlyCollection<ClaimSet> issuances, DateTime expirationTime)
: this(issuances, expirationTime)
{
this.primaryIdentity = primaryIdentity;
}
UnconditionalPolicy(UnconditionalPolicy from)
{
this.disposable = from.disposable;
this.primaryIdentity = from.disposable ? SecurityUtils.CloneIdentityIfNecessary(from.primaryIdentity) : from.primaryIdentity;
if (from.issuance != null)
{
this.issuance = from.disposable ? SecurityUtils.CloneClaimSetIfNecessary(from.issuance) : from.issuance;
}
else
{
this.issuances = from.disposable ? SecurityUtils.CloneClaimSetsIfNecessary(from.issuances) : from.issuances;
}
this.issuer = from.issuer;
this.expirationTime = from.expirationTime;
}
void Initialize(ClaimSet issuer, ClaimSet issuance, ReadOnlyCollection<ClaimSet> issuances, DateTime expirationTime)
{
this.issuer = issuer;
this.issuance = issuance;
this.issuances = issuances;
this.expirationTime = expirationTime;
if (issuance != null)
{
this.disposable = issuance is WindowsClaimSet;
}
else
{
for (int i = 0; i < issuances.Count; ++i)
{
if (issuances[i] is WindowsClaimSet)
{
this.disposable = true;
break;
}
}
}
}
public string Id
{
get
{
if (this.id == null)
this.id = SecurityUniqueId.Create();
return this.id.Value;
}
}
public ClaimSet Issuer
{
get { return this.issuer; }
}
internal IIdentity PrimaryIdentity
{
get
{
ThrowIfDisposed();
if (this.primaryIdentity == null)
{
IIdentity identity = null;
if (this.issuance != null)
{
if (this.issuance is IIdentityInfo)
{
identity = ((IIdentityInfo)this.issuance).Identity;
}
}
else
{
for (int i = 0; i < this.issuances.Count; ++i)
{
ClaimSet issuance = this.issuances[i];
if (issuance is IIdentityInfo)
{
identity = ((IIdentityInfo)issuance).Identity;
// Preferably Non-Anonymous
if (identity != null && identity != SecurityUtils.AnonymousIdentity)
{
break;
}
}
}
}
this.primaryIdentity = identity ?? SecurityUtils.AnonymousIdentity;
}
return this.primaryIdentity;
}
}
internal ReadOnlyCollection<ClaimSet> Issuances
{
get
{
ThrowIfDisposed();
if (this.issuances == null)
{
List<ClaimSet> issuances = new List<ClaimSet>(1);
issuances.Add(issuance);
this.issuances = issuances.AsReadOnly();
}
return this.issuances;
}
}
public DateTime ExpirationTime
{
get { return this.expirationTime; }
}
internal bool IsDisposable
{
get { return this.disposable; }
}
internal UnconditionalPolicy Clone()
{
ThrowIfDisposed();
return (this.disposable) ? new UnconditionalPolicy(this) : this;
}
public virtual void Dispose()
{
if (this.disposable && !this.disposed)
{
this.disposed = true;
SecurityUtils.DisposeIfNecessary(this.primaryIdentity as WindowsIdentity);
SecurityUtils.DisposeClaimSetIfNecessary(this.issuance);
SecurityUtils.DisposeClaimSetsIfNecessary(this.issuances);
}
}
void ThrowIfDisposed()
{
if (this.disposed)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(this.GetType().FullName));
}
}
public virtual bool Evaluate(EvaluationContext evaluationContext, ref object state)
{
ThrowIfDisposed();
if (this.issuance != null)
{
evaluationContext.AddClaimSet(this, this.issuance);
}
else
{
for (int i = 0; i < this.issuances.Count; ++i)
{
if (this.issuances[i] != null)
{
evaluationContext.AddClaimSet(this, this.issuances[i]);
}
}
}
// Preferably Non-Anonymous
if (this.PrimaryIdentity != null && this.PrimaryIdentity != SecurityUtils.AnonymousIdentity)
{
IList<IIdentity> identities;
object obj;
if (!evaluationContext.Properties.TryGetValue(SecurityUtils.Identities, out obj))
{
identities = new List<IIdentity>(1);
evaluationContext.Properties.Add(SecurityUtils.Identities, identities);
}
else
{
// null if other overrides the property with something else
identities = obj as IList<IIdentity>;
}
if (identities != null)
{
identities.Add(this.PrimaryIdentity);
}
}
evaluationContext.RecordExpirationTime(this.expirationTime);
return true;
}
}
}
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