Initial Commit

iTechSharp/srcbc/asn1/esf/SignerLocation.cs

@@ -0,0 +1,144 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Esf
+{
+	/**
+	* Signer-Location attribute (RFC3126).
+	*
+	* <pre>
+	*   SignerLocation ::= SEQUENCE {
+	*       countryName        [0] DirectoryString OPTIONAL,
+	*       localityName       [1] DirectoryString OPTIONAL,
+	*       postalAddress      [2] PostalAddress OPTIONAL }
+	*
+	*   PostalAddress ::= SEQUENCE SIZE(1..6) OF DirectoryString
+	* </pre>
+	*/
+	public class SignerLocation
+		: Asn1Encodable
+	{
+		// TODO Should these be using DirectoryString?
+		private DerUtf8String	countryName;
+		private DerUtf8String	localityName;
+		private Asn1Sequence	postalAddress;
+
+		public SignerLocation(
+			Asn1Sequence seq)
+		{
+			foreach (Asn1TaggedObject obj in seq)
+			{
+				switch (obj.TagNo)
+				{
+					case 0:
+						this.countryName = DerUtf8String.GetInstance(obj, true);
+						break;
+					case 1:
+						this.localityName = DerUtf8String.GetInstance(obj, true);
+						break;
+					case 2:
+						bool isExplicit = obj.IsExplicit();	// handle erroneous implicitly tagged sequences
+						this.postalAddress = Asn1Sequence.GetInstance(obj, isExplicit);
+						if (postalAddress != null && postalAddress.Count > 6)
+							throw new ArgumentException("postal address must contain less than 6 strings");
+						break;
+					default:
+						throw new ArgumentException("illegal tag");
+				}
+			}
+		}
+
+		public SignerLocation(
+			DerUtf8String	countryName,
+			DerUtf8String	localityName,
+			Asn1Sequence	postalAddress)
+		{
+			if (postalAddress != null && postalAddress.Count > 6)
+			{
+				throw new ArgumentException("postal address must contain less than 6 strings");
+			}
+
+			if (countryName != null)
+			{
+				this.countryName = DerUtf8String.GetInstance(countryName.ToAsn1Object());
+			}
+
+			if (localityName != null)
+			{
+				this.localityName = DerUtf8String.GetInstance(localityName.ToAsn1Object());
+			}
+
+			if (postalAddress != null)
+			{
+				this.postalAddress = (Asn1Sequence) postalAddress.ToAsn1Object();
+			}
+		}
+
+		public static SignerLocation GetInstance(
+			object obj)
+		{
+			if (obj == null || obj is SignerLocation)
+			{
+				return (SignerLocation) obj;
+			}
+
+			return new SignerLocation(Asn1Sequence.GetInstance(obj));
+		}
+
+		public DerUtf8String CountryName
+		{
+			get { return countryName; }
+		}
+
+		public DerUtf8String LocalityName
+		{
+			get { return localityName; }
+		}
+
+		public Asn1Sequence PostalAddress
+		{
+			get { return postalAddress; }
+		}
+
+		/**
+		* <pre>
+		*   SignerLocation ::= SEQUENCE {
+		*       countryName        [0] DirectoryString OPTIONAL,
+		*       localityName       [1] DirectoryString OPTIONAL,
+		*       postalAddress      [2] PostalAddress OPTIONAL }
+		*
+		*   PostalAddress ::= SEQUENCE SIZE(1..6) OF DirectoryString
+		*
+		*   DirectoryString ::= CHOICE {
+		*         teletexString           TeletexString (SIZE (1..MAX)),
+		*         printableString         PrintableString (SIZE (1..MAX)),
+		*         universalString         UniversalString (SIZE (1..MAX)),
+		*         utf8String              UTF8String (SIZE (1.. MAX)),
+		*         bmpString               BMPString (SIZE (1..MAX)) }
+		* </pre>
+		*/
+		public override Asn1Object ToAsn1Object()
+		{
+			Asn1EncodableVector v = new Asn1EncodableVector();
+
+			if (countryName != null)
+			{
+				v.Add(new DerTaggedObject(true, 0, countryName));
+			}
+
+			if (localityName != null)
+			{
+				v.Add(new DerTaggedObject(true, 1, localityName));
+			}
+
+			if (postalAddress != null)
+			{
+				v.Add(new DerTaggedObject(true, 2, postalAddress));
+			}
+
+			return new DerSequence(v);
+		}
+	}
+}