Restriction.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » IsisMtt » X509 » C# / CSharp Open Source

using System;

using Org.BouncyCastle.Asn1.X500;

namespace Org.BouncyCastle.Asn1.IsisMtt.X509{
  /**
  * Some other restriction regarding the usage of this certificate.
  * <p/>
  * <pre>
  *  RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
  * </pre>
  */
  public class Restriction
    : Asn1Encodable
  {
    private readonly DirectoryString restriction;

    public static Restriction GetInstance(
      object obj)
    {
      if (obj == null || obj is Restriction)
      {
        return (Restriction) obj;
      }

      if (obj is IAsn1String)
      {
        return new Restriction(DirectoryString.GetInstance(obj));
      }

      throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
    }

    /**
    * Constructor from DirectoryString.
    * <p/>
    * The DirectoryString is of type RestrictionSyntax:
    * <p/>
    * <pre>
    *      RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
    * </pre>
    *
    * @param restriction A IAsn1String.
    */
    private Restriction(
      DirectoryString restriction)
    {
      this.restriction = restriction;
    }

    /**
    * Constructor from a given details.
    *
    * @param restriction The description of the restriction.
    */
    public Restriction(
      string restriction)
    {
      this.restriction = new DirectoryString(restriction);
    }

    public virtual DirectoryString RestrictionString
    {
      get { return restriction; }
    }

    /**
    * Produce an object suitable for an Asn1OutputStream.
    * <p/>
    * Returns:
    * <p/>
    * <pre>
    *      RestrictionSyntax ::= DirectoryString (SIZE(1..1024))
    * <p/>
    * </pre>
    *
    * @return an Asn1Object
    */
    public override Asn1Object ToAsn1Object()
    {
      return restriction.ToAsn1Object();
    }
  }
}