X509SecurityToken.cs :  » 2.6.4-mono-.net-core » System.IdentityModel » System » IdentityModel » Tokens » C# / CSharp Open Source

//
// X509SecurityToken.cs
//
// Author:
//  Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2006 Novell, Inc.  http://www.novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.ObjectModel;
using System.Xml;
using System.IdentityModel.Policy;
using System.Security.Cryptography.X509Certificates;

namespace System.IdentityModel.Tokens{
  public class X509SecurityToken : SecurityToken, IDisposable
  {
    public X509SecurityToken (X509Certificate2 certificate)
      : this (certificate, "uuid:" + Guid.NewGuid ().ToString ())
    {
    }

    public X509SecurityToken (X509Certificate2 certificate, string id)
    {
      if (certificate == null)
        throw new ArgumentNullException ("certificate");
      if (id == null)
        throw new ArgumentNullException ("id");
      this.cert = certificate;
      this.id = id;
    }

    X509Certificate2 cert;
    string id;
    ReadOnlyCollection<SecurityKey> keys;

    public X509Certificate2 Certificate {
      get { return cert; }
    }

    public override DateTime ValidFrom {
      get { return cert.NotBefore.ToUniversalTime (); }
    }

    public override DateTime ValidTo {
      get { return cert.NotAfter.ToUniversalTime (); }
    }

    public override string Id {
      get { return id; }
    }

    public virtual void Dispose ()
    {
      cert.Reset ();
      cert = null;
    }

    public override ReadOnlyCollection<SecurityKey> SecurityKeys {
      get {
        if (keys == null)
          keys = new ReadOnlyCollection<SecurityKey> (new SecurityKey [] {new X509AsymmetricSecurityKey (cert)});
        return keys;
      }
    }

    public override bool CanCreateKeyIdentifierClause<T> ()
    {
      Type t = typeof (T);
      return
//        t == typeof (X509SubjectKeyIdentifierClause) ||
        t == typeof (X509ThumbprintKeyIdentifierClause) ||
        t == typeof (X509IssuerSerialKeyIdentifierClause) ||
        t == typeof (X509RawDataKeyIdentifierClause);
    }

    public override T CreateKeyIdentifierClause<T> ()
    {
      Type t = typeof (T);
//      if (t == typeof (X509SubjectKeyIdentifierClause))
//        return (T) (object) new X509SubjectKeyIdentifierClause (cert.SubjectName.RawData);
      if (t == typeof (X509ThumbprintKeyIdentifierClause))
        return (T) (object) new X509ThumbprintKeyIdentifierClause (cert);
      if (t == typeof (X509IssuerSerialKeyIdentifierClause))
        return (T) (object) new X509IssuerSerialKeyIdentifierClause (cert);
      if (t == typeof (X509RawDataKeyIdentifierClause))
        return (T) (object) new X509RawDataKeyIdentifierClause (cert);

      throw new NotSupportedException (String.Format ("X509SecurityToken does not support creation of {0}.", t));
    }

    [MonoTODO]
    public override bool MatchesKeyIdentifierClause (
      SecurityKeyIdentifierClause skiClause)
    {
      LocalIdKeyIdentifierClause l =
        skiClause as LocalIdKeyIdentifierClause;
      if (l != null)
        return l.LocalId == Id;

      X509ThumbprintKeyIdentifierClause t =
        skiClause as X509ThumbprintKeyIdentifierClause;
      if (t != null)
        return t.Matches (cert);
      X509IssuerSerialKeyIdentifierClause i =
        skiClause as X509IssuerSerialKeyIdentifierClause;
      if (i != null)
        return i.Matches (cert);
      X509SubjectKeyIdentifierClause s =
        skiClause as X509SubjectKeyIdentifierClause;
      if (s != null)
        return s.Matches (cert);
      X509RawDataKeyIdentifierClause r =
        skiClause as X509RawDataKeyIdentifierClause;
      if (r != null)
        return r.Matches (cert);

      return false;
    }

    protected void ThrowIfDisposed ()
    {
      if (cert == null)
        throw new ObjectDisposedException ("This X509SecurityToken has already been disposed.");
    }
  }
}