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

using System;

namespace Org.BouncyCastle.Asn1.X509{
    /**
     * <code>UserNotice</code> class, used in
     * <code>CertificatePolicies</code> X509 extensions (in policy
     * qualifiers).
     * <pre>
     * UserNotice ::= Sequence {
     *      noticeRef        NoticeReference OPTIONAL,
     *      explicitText     DisplayText OPTIONAL}
     *
     * </pre>
     *
     * @see PolicyQualifierId
     * @see PolicyInformation
     */
    public class UserNotice
        : Asn1Encodable
    {
        internal NoticeReference  noticeRef;
        internal DisplayText    explicitText;

    /**
         * Creates a new <code>UserNotice</code> instance.
         *
         * @param noticeRef a <code>NoticeReference</code> value
         * @param explicitText a <code>DisplayText</code> value
         */
        public UserNotice(
            NoticeReference  noticeRef,
            DisplayText    explicitText)
        {
            this.noticeRef = noticeRef;
            this.explicitText = explicitText;
        }

    /**
         * Creates a new <code>UserNotice</code> instance.
         *
         * @param noticeRef a <code>NoticeReference</code> value
         * @param str the explicitText field as a string.
         */
        public UserNotice(
            NoticeReference  noticeRef,
            string      str)
        {
            this.noticeRef = noticeRef;
            this.explicitText = new DisplayText(str);
        }

    /**
     * Creates a new <code>UserNotice</code> instance.
     * <p>Useful from reconstructing a <code>UserNotice</code> instance
     * from its encodable/encoded form.
     *
     * @param as an <code>ASN1Sequence</code> value obtained from either
     * calling @{link toASN1Object()} for a <code>UserNotice</code>
     * instance or from parsing it from a DER-encoded stream.</p>
     */
    public UserNotice(
      Asn1Sequence seq)
    {
      if (seq.Count == 2)
      {
        noticeRef = NoticeReference.GetInstance(seq[0]);
        explicitText = DisplayText.GetInstance(seq[1]);
      }
      else if (seq.Count == 1)
      {
        if (seq[0].ToAsn1Object() is Asn1Sequence)
        {
          noticeRef = NoticeReference.GetInstance(seq[0]);
        }
        else
        {
          explicitText = DisplayText.GetInstance(seq[0]);
        }
      }
      else
      {
        throw new ArgumentException("Bad sequence size: " + seq.Count);
      }
        }

    public override Asn1Object ToAsn1Object()
        {
            Asn1EncodableVector av = new Asn1EncodableVector();

      if (noticeRef != null)
            {
                av.Add(noticeRef);
            }

      if (explicitText != null)
            {
                av.Add(explicitText);
            }

      return new DerSequence(av);
        }
    }
}