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

//
// Claim.cs
//
// Author:
//  Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005 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.Generic;
using System.IO;
using System.Net.Mail;
using System.Runtime.Serialization;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Security.Principal;

namespace System.IdentityModel.Claims{
  [DataContract (Namespace="http://schemas.xmlsoap.org/ws/2005/05/identity")]
  public class Claim
  {
    class ClaimComparer : IEqualityComparer<Claim>
    {
      public bool Equals (Claim c1, Claim c2)
      {
        if (c1 == null)
          return c2 == null;
        else if (c2 == null)
          return false;
        return  c1.ClaimType == c2.ClaimType &&
          c1.Right == c2.Right &&
          c1.Resource != null ? c1.Resource.Equals (c2.Resource) : c2.Resource == null;
      }

      public int GetHashCode (Claim c)
      {
        return  c.ClaimType.GetHashCode () << 24 +
          c.Right.GetHashCode () << 16 +
          (c.Resource != null ? c.Resource.GetHashCode () << 8 : 0);
      }
    }

    // static members
    static readonly ClaimComparer default_comparer = new ClaimComparer ();
    static readonly Claim system = new Claim (ClaimTypes.System, "System", Rights.Identity);

    public static IEqualityComparer<Claim> DefaultComparer {
      get { return default_comparer; }
    }

    public static Claim System {
      get { return system; }
    }

    public static Claim CreateDnsClaim (string dns)
    {
      return new Claim (ClaimTypes.Dns, dns, Rights.PossessProperty);
    }

    [MonoTODO]
    public static Claim CreateDenyOnlyWindowsSidClaim (SecurityIdentifier identifier)
    {
      throw new NotImplementedException ();
    }

    public static Claim CreateHashClaim (byte [] hash)
    {
      return new Claim (ClaimTypes.Hash, hash, Rights.PossessProperty);
    }

    public static Claim CreateMailAddressClaim (
      MailAddress mailAddress)
    {
      return new Claim (ClaimTypes.Email, mailAddress, Rights.PossessProperty);
    }

    public static Claim CreateNameClaim (string name)
    {
      return new Claim (ClaimTypes.Name, name, Rights.PossessProperty);
    }

    public static Claim CreateRsaClaim (RSA rsa)
    {
      return new Claim (ClaimTypes.Rsa, rsa, Rights.PossessProperty);
    }

    public static Claim CreateSpnClaim (string spn)
    {
      return new Claim (ClaimTypes.Spn, spn, Rights.PossessProperty);
    }

    public static Claim CreateThumbprintClaim (byte [] thumbprint)
    {
      return new Claim (ClaimTypes.Thumbprint, thumbprint, Rights.PossessProperty);
    }

    public static Claim CreateUpnClaim (string upn)
    {
      return new Claim (ClaimTypes.Upn, upn, Rights.PossessProperty);
    }

    public static Claim CreateUriClaim (Uri uri)
    {
      return new Claim (ClaimTypes.Uri, uri, Rights.PossessProperty);
    }

    public static Claim CreateWindowsSidClaim (
      SecurityIdentifier sid)
    {
      return new Claim (ClaimTypes.Sid, sid, Rights.PossessProperty);
    }

    public static Claim CreateX500DistinguishedNameClaim (
      X500DistinguishedName x500DistinguishedName)
    {
      return new Claim (ClaimTypes.X500DistinguishedName, x500DistinguishedName, Rights.PossessProperty);
    }

    // since those public properties do not expose attributes,
    // here I use them on the fields instead ...
    [DataMember (Name = "ClaimType")]
    string claim_type;
    [DataMember (Name = "Resource")]
    object resource;
    [DataMember (Name = "Right")]
    string right;

    public Claim (string claimType, object resource,
      string right)
    {
      this.claim_type = claimType;
      this.resource = resource;
      this.right = right;
    }

    public object Resource {
      get { return resource; }
    }

    public string ClaimType {
      get { return claim_type; }
    }

    public string Right {
      get { return right; }
    }

    public override string ToString ()
    {
      return String.Concat (Right, ": ", ClaimType);
    }

    public override bool Equals (object obj)
    {
      Claim c = obj as Claim;
      return c != null && DefaultComparer.Equals (this, c);
    }

    public override int GetHashCode ()
    {
      return DefaultComparer.GetHashCode (this);
    }
  }
}