Initial Commit

iTechSharp/srcbc/asn1/x509/PolicyQualifierInfo.cs

@@ -0,0 +1,91 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+	/**
+	 * Policy qualifiers, used in the X509V3 CertificatePolicies
+	 * extension.
+	 *
+	 * <pre>
+	 *   PolicyQualifierInfo ::= Sequence {
+	 *       policyQualifierId  PolicyQualifierId,
+	 *       qualifier          ANY DEFINED BY policyQualifierId }
+	 * </pre>
+	 */
+	public class PolicyQualifierInfo
+		: Asn1Encodable
+	{
+		internal readonly DerObjectIdentifier	policyQualifierId;
+		internal readonly Asn1Encodable			qualifier;
+
+		/**
+		 * Creates a new <code>PolicyQualifierInfo</code> instance.
+		 *
+		 * @param policyQualifierId a <code>PolicyQualifierId</code> value
+		 * @param qualifier the qualifier, defined by the above field.
+		 */
+		public PolicyQualifierInfo(
+			DerObjectIdentifier	policyQualifierId,
+			Asn1Encodable		qualifier)
+		{
+			this.policyQualifierId = policyQualifierId;
+			this.qualifier = qualifier;
+		}
+
+		/**
+		 * Creates a new <code>PolicyQualifierInfo</code> containing a
+		 * cPSuri qualifier.
+		 *
+		 * @param cps the CPS (certification practice statement) uri as a
+		 * <code>string</code>.
+		 */
+		public PolicyQualifierInfo(
+			string cps)
+		{
+			policyQualifierId = PolicyQualifierID.IdQtCps;
+			qualifier = new DerIA5String(cps);
+		}
+
+		/**
+		 * Creates a new <code>PolicyQualifierInfo</code> instance.
+		 *
+		 * @param as <code>PolicyQualifierInfo</code> X509 structure
+		 * encoded as an Asn1Sequence.
+		 */
+		private PolicyQualifierInfo(
+			Asn1Sequence seq)
+		{
+			if (seq.Count != 2)
+				throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+
+			policyQualifierId = DerObjectIdentifier.GetInstance(seq[0]);
+			qualifier = seq[1];
+		}
+
+		public static PolicyQualifierInfo GetInstance(
+			object obj)
+		{
+			if (obj is PolicyQualifierInfo)
+			{
+				return (PolicyQualifierInfo) obj;
+			}
+
+			if (obj is Asn1Sequence)
+			{
+				return new PolicyQualifierInfo((Asn1Sequence) obj);
+			}
+
+			throw new ArgumentException("unknown object in GetInstance: " + obj.GetType().FullName, "obj");
+		}
+
+		/**
+		 * Returns a Der-encodable representation of this instance.
+		 *
+		 * @return a <code>Asn1Object</code> value
+		 */
+		public override Asn1Object ToAsn1Object()
+		{
+			return new DerSequence(policyQualifierId, qualifier);
+		}
+	}
+}