Initial Commit

iTechSharp/srcbc/asn1/x509/TBSCertList.cs

@@ -0,0 +1,274 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Asn1.X509
+{
+	public class CrlEntry
+		: Asn1Encodable
+	{
+		internal Asn1Sequence	seq;
+		internal DerInteger		userCertificate;
+		internal Time			revocationDate;
+		internal X509Extensions	crlEntryExtensions;
+
+		public CrlEntry(
+			Asn1Sequence seq)
+		{
+			if (seq.Count < 2 || seq.Count > 3)
+			{
+				throw new ArgumentException("Bad sequence size: " + seq.Count);
+			}
+
+			this.seq = seq;
+
+			userCertificate = DerInteger.GetInstance(seq[0]);
+			revocationDate = Time.GetInstance(seq[1]);
+		}
+
+		public DerInteger UserCertificate
+		{
+			get { return userCertificate; }
+		}
+
+		public Time RevocationDate
+		{
+			get { return revocationDate; }
+		}
+
+		public X509Extensions Extensions
+		{
+			get
+			{
+				if (crlEntryExtensions == null && seq.Count == 3)
+				{
+					crlEntryExtensions = X509Extensions.GetInstance(seq[2]);
+				}
+
+				return crlEntryExtensions;
+			}
+		}
+
+		public override Asn1Object ToAsn1Object()
+		{
+			return seq;
+		}
+	}
+
+	/**
+     * PKIX RFC-2459 - TbsCertList object.
+     * <pre>
+     * TbsCertList  ::=  Sequence  {
+     *      version                 Version OPTIONAL,
+     *                                   -- if present, shall be v2
+     *      signature               AlgorithmIdentifier,
+     *      issuer                  Name,
+     *      thisUpdate              Time,
+     *      nextUpdate              Time OPTIONAL,
+     *      revokedCertificates     Sequence OF Sequence  {
+     *           userCertificate         CertificateSerialNumber,
+     *           revocationDate          Time,
+     *           crlEntryExtensions      Extensions OPTIONAL
+     *                                         -- if present, shall be v2
+     *                                }  OPTIONAL,
+     *      crlExtensions           [0]  EXPLICIT Extensions OPTIONAL
+     *                                         -- if present, shall be v2
+     *                                }
+     * </pre>
+     */
+    public class TbsCertificateList
+        : Asn1Encodable
+    {
+		private class RevokedCertificatesEnumeration
+			: IEnumerable
+		{
+			private readonly IEnumerable en;
+
+			internal RevokedCertificatesEnumeration(
+				IEnumerable en)
+			{
+				this.en = en;
+			}
+
+			public IEnumerator GetEnumerator()
+			{
+				return new RevokedCertificatesEnumerator(en.GetEnumerator());
+			}
+
+			private class RevokedCertificatesEnumerator
+				: IEnumerator
+			{
+				private readonly IEnumerator e;
+
+				internal RevokedCertificatesEnumerator(
+					IEnumerator e)
+				{
+					this.e = e;
+				}
+
+				public bool MoveNext()
+				{
+					return e.MoveNext();
+				}
+
+				public void Reset()
+				{
+					e.Reset();
+				}
+
+				public object Current
+				{
+					get { return new CrlEntry(Asn1Sequence.GetInstance(e.Current)); }
+				}
+			}
+		}
+
+		internal Asn1Sequence			seq;
+		internal DerInteger				version;
+        internal AlgorithmIdentifier	signature;
+        internal X509Name				issuer;
+        internal Time					thisUpdate;
+        internal Time					nextUpdate;
+		internal Asn1Sequence			revokedCertificates;
+		internal X509Extensions			crlExtensions;
+
+		public static TbsCertificateList GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+        }
+
+		public static TbsCertificateList GetInstance(
+            object obj)
+        {
+            TbsCertificateList list = obj as TbsCertificateList;
+
+			if (obj == null || list != null)
+            {
+                return list;
+            }
+
+			if (obj is Asn1Sequence)
+            {
+                return new TbsCertificateList((Asn1Sequence) obj);
+            }
+
+			throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
+        }
+
+		internal TbsCertificateList(
+            Asn1Sequence seq)
+        {
+			if (seq.Count < 3 || seq.Count > 7)
+			{
+				throw new ArgumentException("Bad sequence size: " + seq.Count);
+			}
+
+			int seqPos = 0;
+
+			this.seq = seq;
+
+			if (seq[seqPos] is DerInteger)
+            {
+				version = DerInteger.GetInstance(seq[seqPos++]);
+			}
+            else
+            {
+                version = new DerInteger(0);
+            }
+
+			signature = AlgorithmIdentifier.GetInstance(seq[seqPos++]);
+            issuer = X509Name.GetInstance(seq[seqPos++]);
+            thisUpdate = Time.GetInstance(seq[seqPos++]);
+
+			if (seqPos < seq.Count
+                && (seq[seqPos] is DerUtcTime
+                   || seq[seqPos] is DerGeneralizedTime
+                   || seq[seqPos] is Time))
+            {
+                nextUpdate = Time.GetInstance(seq[seqPos++]);
+            }
+
+			if (seqPos < seq.Count
+                && !(seq[seqPos] is DerTaggedObject))
+            {
+				revokedCertificates = Asn1Sequence.GetInstance(seq[seqPos++]);
+			}
+
+			if (seqPos < seq.Count
+                && seq[seqPos] is DerTaggedObject)
+            {
+				crlExtensions = X509Extensions.GetInstance(seq[seqPos]);
+			}
+        }
+
+		public int Version
+        {
+            get { return version.Value.IntValue + 1; }
+        }
+
+		public DerInteger VersionNumber
+        {
+            get { return version; }
+        }
+
+		public AlgorithmIdentifier Signature
+        {
+            get { return signature; }
+        }
+
+		public X509Name Issuer
+        {
+            get { return issuer; }
+        }
+
+		public Time ThisUpdate
+        {
+            get { return thisUpdate; }
+        }
+
+		public Time NextUpdate
+        {
+            get { return nextUpdate; }
+        }
+
+		public CrlEntry[] GetRevokedCertificates()
+        {
+			if (revokedCertificates == null)
+			{
+				return new CrlEntry[0];
+			}
+
+			CrlEntry[] entries = new CrlEntry[revokedCertificates.Count];
+
+			for (int i = 0; i < entries.Length; i++)
+			{
+				entries[i] = new CrlEntry(Asn1Sequence.GetInstance(revokedCertificates[i]));
+			}
+
+			return entries;
+		}
+
+		public IEnumerable GetRevokedCertificateEnumeration()
+		{
+			if (revokedCertificates == null)
+			{
+				return EmptyEnumerable.Instance;
+			}
+
+			return new RevokedCertificatesEnumeration(revokedCertificates);
+		}
+
+		public X509Extensions Extensions
+        {
+            get { return crlExtensions; }
+        }
+
+		public override Asn1Object ToAsn1Object()
+        {
+            return seq;
+        }
+    }
+}