UnconditionalPolicy.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / IdentityModel / System / IdentityModel / Policy / UnconditionalPolicy.cs / 1305376 / UnconditionalPolicy.cs
                        
                        
                            //------------------------------------------------------------ 
// 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 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 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 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 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 Issuances 
        {
            get 
            { 
                ThrowIfDisposed();
                if (this.issuances == null) 
                {
                    List issuances = new List(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 identities;
                object obj; 
                if (!evaluationContext.Properties.TryGetValue(SecurityUtils.Identities, out obj))
                { 
                    identities = new List(1); 
                    evaluationContext.Properties.Add(SecurityUtils.Identities, identities);
                } 
                else
                {
                    // null if other overrides the property with something else
                    identities = obj as IList; 
                }
 
                if (identities != null) 
                {
                    identities.Add(this.PrimaryIdentity); 
                }
            }

            evaluationContext.RecordExpirationTime(this.expirationTime); 
            return true;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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UnconditionalPolicy.cs source code in C# .NET

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