Update SignerLocation to use DirectoryString

- obsolete old UTF8-based methods.

Author: peterdettman

crypto/src/asn1/esf/SignerLocation.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Collections;
 
-using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.X500;
 
 namespace Org.BouncyCastle.Asn1.Esf
 {
@@ -20,10 +20,9 @@ namespace Org.BouncyCastle.Asn1.Esf
 	public class SignerLocation
 		: Asn1Encodable
 	{
-		// TODO Should these be using DirectoryString?
-		private DerUtf8String	countryName;
-		private DerUtf8String	localityName;
-		private Asn1Sequence	postalAddress;
+        private DirectoryString countryName;
+        private DirectoryString localityName;
+        private Asn1Sequence postalAddress;
 
 		public SignerLocation(
 			Asn1Sequence seq)
@@ -33,10 +32,10 @@ public SignerLocation(
 				switch (obj.TagNo)
 				{
 					case 0:
-						this.countryName = DerUtf8String.GetInstance(obj, true);
+						this.countryName = DirectoryString.GetInstance(obj, true);
 						break;
 					case 1:
-						this.localityName = DerUtf8String.GetInstance(obj, true);
+                        this.localityName = DirectoryString.GetInstance(obj, true);
 						break;
 					case 2:
 						bool isExplicit = obj.IsExplicit();	// handle erroneous implicitly tagged sequences
@@ -50,33 +49,36 @@ public SignerLocation(
 			}
 		}
 
-		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(
+        private SignerLocation(
+            DirectoryString countryName,
+            DirectoryString localityName,
+            Asn1Sequence postalAddress)
+        {
+            if (postalAddress != null && postalAddress.Count > 6)
+                throw new ArgumentException("postal address must contain less than 6 strings");
+
+            this.countryName = countryName;
+            this.localityName = localityName;
+            this.postalAddress = postalAddress;
+        }
+
+        public SignerLocation(
+            DirectoryString countryName,
+            DirectoryString localityName,
+            DirectoryString[] postalAddress)
+            : this(countryName, localityName, new DerSequence(postalAddress))
+        {
+        }
+
+        public SignerLocation(
+            DerUtf8String countryName,
+            DerUtf8String localityName,
+            Asn1Sequence postalAddress)
+            : this(DirectoryString.GetInstance(countryName), DirectoryString.GetInstance(localityName), postalAddress)
+        {
+        }
+
+        public static SignerLocation GetInstance(
 			object obj)
 		{
 			if (obj == null || obj is SignerLocation)
@@ -87,15 +89,41 @@ public static SignerLocation GetInstance(
 			return new SignerLocation(Asn1Sequence.GetInstance(obj));
 		}
 
+        public DirectoryString Country
+        {
+            get { return countryName; }
+        }
+
+        public DirectoryString Locality
+        {
+            get { return localityName; }
+        }
+
+        public DirectoryString[] GetPostal()
+        {
+            if (postalAddress == null)
+                return null;
+
+            DirectoryString[] dirStrings = new DirectoryString[postalAddress.Count];
+            for (int i = 0; i != dirStrings.Length; i++)
+            {
+                dirStrings[i] = DirectoryString.GetInstance(postalAddress[i]);
+            }
+
+            return dirStrings;
+        }
+
+        [Obsolete("Use 'Country' property instead")]
 		public DerUtf8String CountryName
 		{
-			get { return countryName; }
+            get { return countryName == null ? null : new DerUtf8String(countryName.GetString()); }
 		}
 
-		public DerUtf8String LocalityName
-		{
-			get { return localityName; }
-		}
+        [Obsolete("Use 'Locality' property instead")]
+        public DerUtf8String LocalityName
+        {
+            get { return localityName == null ? null : new DerUtf8String(localityName.GetString()); }
+        }
 
 		public Asn1Sequence PostalAddress
 		{

crypto/src/asn1/x500/DirectoryString.cs

@@ -9,15 +9,12 @@ public class DirectoryString
 	{
 		private readonly DerStringBase str;
 
-		public static DirectoryString GetInstance(
-			object obj)
+		public static DirectoryString GetInstance(object obj)
 		{
-			if (obj is DirectoryString)
-			{
+			if (obj == null || obj is DirectoryString)
 				return (DirectoryString) obj;
-			}
 
-			if (obj is DerStringBase)
+            if (obj is DerStringBase)
 			{
 				if (obj is DerT61String
 					|| obj is DerPrintableString

crypto/test/src/asn1/test/SignerLocationUnitTest.cs

@@ -2,8 +2,8 @@
 
 using NUnit.Framework;
 
-using Org.BouncyCastle.Asn1;
 using Org.BouncyCastle.Asn1.Esf;
+using Org.BouncyCastle.Asn1.X500;
 using Org.BouncyCastle.Utilities.Test;
 
 namespace Org.BouncyCastle.Asn1.Tests
@@ -23,17 +23,17 @@ public override void PerformTest()
 
             SignerLocation sl = new SignerLocation(countryName, null, null);
 
-            CheckConstruction(sl, countryName, null, null);
+            CheckConstruction(sl, DirectoryString.GetInstance(countryName), null, null);
 
             DerUtf8String localityName = new DerUtf8String("Melbourne");
 
             sl = new SignerLocation(null, localityName, null);
 
-			CheckConstruction(sl, null, localityName, null);
+			CheckConstruction(sl, null, DirectoryString.GetInstance(localityName), null);
 
 			sl = new SignerLocation(countryName, localityName, null);
 
-			CheckConstruction(sl, countryName, localityName, null);
+			CheckConstruction(sl, DirectoryString.GetInstance(countryName), DirectoryString.GetInstance(localityName), null);
 
 			Asn1Sequence postalAddress = new DerSequence(
 				new DerUtf8String("line 1"),
@@ -45,11 +45,11 @@ public override void PerformTest()
 
             sl = new SignerLocation(countryName, null, postalAddress);
 
-            CheckConstruction(sl, countryName, null, postalAddress);
+            CheckConstruction(sl, DirectoryString.GetInstance(countryName), null, postalAddress);
 
             sl = new SignerLocation(countryName, localityName, postalAddress);
 
-            CheckConstruction(sl, countryName, localityName, postalAddress);
+            CheckConstruction(sl, DirectoryString.GetInstance(countryName), DirectoryString.GetInstance(localityName), postalAddress);
 
             sl = SignerLocation.GetInstance(null);
 
@@ -117,9 +117,9 @@ public override void PerformTest()
 
 		private void CheckConstruction(
             SignerLocation sl,
-            DerUtf8String  countryName,
-            DerUtf8String  localityName,
-            Asn1Sequence   postalAddress)
+            DirectoryString countryName,
+            DirectoryString localityName,
+            Asn1Sequence postalAddress)
         {
             CheckValues(sl, countryName, localityName, postalAddress);
 
@@ -137,9 +137,9 @@ private void CheckConstruction(
 
 		private void CheckValues(
             SignerLocation sl,
-            DerUtf8String  countryName,
-            DerUtf8String  localityName,
-            Asn1Sequence   postalAddress)
+            DirectoryString countryName,
+            DirectoryString localityName,
+            Asn1Sequence postalAddress)
         {
             if (countryName != null)
             {