1 files changed, 279 insertions, 0 deletions
diff --git a/crypto/src/openpgp/PgpPublicKeyRingBundle.cs b/crypto/src/openpgp/PgpPublicKeyRingBundle.cs
new file mode 100644
index 000000000..519a2f884
--- /dev/null
+++ b/crypto/src/openpgp/PgpPublicKeyRingBundle.cs
@@ -0,0 +1,279 @@
+using System;
+using System.Collections;
+using System.IO;
+
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Collections;
+
+namespace Org.BouncyCastle.Bcpg.OpenPgp
+{
+	/// <remarks>
+	/// Often a PGP key ring file is made up of a succession of master/sub-key key rings.
+	/// If you want to read an entire public key file in one hit this is the class for you.
+	/// </remarks>
+    public class PgpPublicKeyRingBundle
+    {
+        private readonly IDictionary pubRings;
+        private readonly IList order;
+
+		private PgpPublicKeyRingBundle(
+            IDictionary	pubRings,
+            IList       order)
+        {
+            this.pubRings = pubRings;
+            this.order = order;
+        }
+
+		public PgpPublicKeyRingBundle(
+            byte[] encoding)
+            : this(new MemoryStream(encoding, false))
+        {
+        }
+
+		/// <summary>Build a PgpPublicKeyRingBundle from the passed in input stream.</summary>
+		/// <param name="inputStream">Input stream containing data.</param>
+		/// <exception cref="IOException">If a problem parsing the stream occurs.</exception>
+		/// <exception cref="PgpException">If an object is encountered which isn't a PgpPublicKeyRing.</exception>
+		public PgpPublicKeyRingBundle(
+            Stream inputStream)
+			: this(new PgpObjectFactory(inputStream).AllPgpObjects())
+		{
+        }
+
+		public PgpPublicKeyRingBundle(
+            IEnumerable e)
+        {
+			this.pubRings = Platform.CreateHashtable();
+			this.order = Platform.CreateArrayList();
+
+			foreach (object obj in e)
+            {
+				PgpPublicKeyRing pgpPub = obj as PgpPublicKeyRing;
+
+				if (pgpPub == null)
+				{
+					throw new PgpException(obj.GetType().FullName + " found where PgpPublicKeyRing expected");
+				}
+
+				long key = pgpPub.GetPublicKey().KeyId;
+                pubRings.Add(key, pgpPub);
+				order.Add(key);
+            }
+        }
+
+		[Obsolete("Use 'Count' property instead")]
+		public int Size
+		{
+			get { return order.Count; }
+		}
+
+		/// <summary>Return the number of key rings in this collection.</summary>
+        public int Count
+        {
+			get { return order.Count; }
+        }
+
+		/// <summary>Allow enumeration of the public key rings making up this collection.</summary>
+        public IEnumerable GetKeyRings()
+        {
+			return new EnumerableProxy(pubRings.Values);
+        }
+
+		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
+		/// <param name="userId">The user ID to be matched.</param>
+		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
+		public IEnumerable GetKeyRings(
+			string userId)
+		{
+			return GetKeyRings(userId, false, false);
+		}
+
+		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
+		/// <param name="userId">The user ID to be matched.</param>
+		/// <param name="matchPartial">If true, userId need only be a substring of an actual ID string to match.</param>
+		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
+        public IEnumerable GetKeyRings(
+            string	userId,
+            bool	matchPartial)
+        {
+			return GetKeyRings(userId, matchPartial, false);
+        }
+
+		/// <summary>Allow enumeration of the key rings associated with the passed in userId.</summary>
+		/// <param name="userId">The user ID to be matched.</param>
+		/// <param name="matchPartial">If true, userId need only be a substring of an actual ID string to match.</param>
+		/// <param name="ignoreCase">If true, case is ignored in user ID comparisons.</param>
+		/// <returns>An <c>IEnumerable</c> of key rings which matched (possibly none).</returns>
+		public IEnumerable GetKeyRings(
+			string	userId,
+			bool	matchPartial,
+			bool	ignoreCase)
+		{
+			IList rings = Platform.CreateArrayList();
+
+			if (ignoreCase)
+			{
+                userId = Platform.ToLowerInvariant(userId);
+			}
+
+			foreach (PgpPublicKeyRing pubRing in GetKeyRings())
+			{
+				foreach (string nextUserID in pubRing.GetPublicKey().GetUserIds())
+				{
+					string next = nextUserID;
+					if (ignoreCase)
+					{
+                        next = Platform.ToLowerInvariant(next);
+                    }
+
+					if (matchPartial)
+					{
+						if (next.IndexOf(userId) > -1)
+						{
+							rings.Add(pubRing);
+						}
+					}
+					else
+					{
+						if (next.Equals(userId))
+						{
+							rings.Add(pubRing);
+						}
+					}
+				}
+			}
+
+			return new EnumerableProxy(rings);
+		}
+
+		/// <summary>Return the PGP public key associated with the given key id.</summary>
+		/// <param name="keyId">The ID of the public key to return.</param>
+        public PgpPublicKey GetPublicKey(
+            long keyId)
+        {
+            foreach (PgpPublicKeyRing pubRing in GetKeyRings())
+            {
+                PgpPublicKey pub = pubRing.GetPublicKey(keyId);
+
+				if (pub != null)
+                {
+                    return pub;
+                }
+            }
+
+			return null;
+        }
+
+		/// <summary>Return the public key ring which contains the key referred to by keyId</summary>
+		/// <param name="keyId">key ID to match against</param>
+        public PgpPublicKeyRing GetPublicKeyRing(
+            long keyId)
+        {
+            if (pubRings.Contains(keyId))
+            {
+                return (PgpPublicKeyRing)pubRings[keyId];
+            }
+
+			foreach (PgpPublicKeyRing pubRing in GetKeyRings())
+            {
+                PgpPublicKey pub = pubRing.GetPublicKey(keyId);
+
+                if (pub != null)
+                {
+                    return pubRing;
+                }
+            }
+
+			return null;
+        }
+
+		/// <summary>
+		/// Return true if a key matching the passed in key ID is present, false otherwise.
+		/// </summary>
+		/// <param name="keyID">key ID to look for.</param>
+		public bool Contains(
+			long keyID)
+		{
+			return GetPublicKey(keyID) != null;
+		}
+
+		public byte[] GetEncoded()
+        {
+            MemoryStream bOut = new MemoryStream();
+
+			Encode(bOut);
+
+			return bOut.ToArray();
+        }
+
+		public void Encode(
+            Stream outStr)
+        {
+			BcpgOutputStream bcpgOut = BcpgOutputStream.Wrap(outStr);
+
+			foreach (long key in order)
+            {
+                PgpPublicKeyRing sec = (PgpPublicKeyRing) pubRings[key];
+
+				sec.Encode(bcpgOut);
+            }
+        }
+
+		/// <summary>
+		/// Return a new bundle containing the contents of the passed in bundle and
+		/// the passed in public key ring.
+		/// </summary>
+		/// <param name="bundle">The <c>PgpPublicKeyRingBundle</c> the key ring is to be added to.</param>
+		/// <param name="publicKeyRing">The key ring to be added.</param>
+		/// <returns>A new <c>PgpPublicKeyRingBundle</c> merging the current one with the passed in key ring.</returns>
+		/// <exception cref="ArgumentException">If the keyId for the passed in key ring is already present.</exception>
+        public static PgpPublicKeyRingBundle AddPublicKeyRing(
+            PgpPublicKeyRingBundle  bundle,
+            PgpPublicKeyRing        publicKeyRing)
+        {
+            long key = publicKeyRing.GetPublicKey().KeyId;
+
+			if (bundle.pubRings.Contains(key))
+            {
+                throw new ArgumentException("Bundle already contains a key with a keyId for the passed in ring.");
+            }
+
+			IDictionary newPubRings = Platform.CreateHashtable(bundle.pubRings);
+            IList newOrder = Platform.CreateArrayList(bundle.order);
+
+			newPubRings[key] = publicKeyRing;
+
+			newOrder.Add(key);
+
+			return new PgpPublicKeyRingBundle(newPubRings, newOrder);
+        }
+
+		/// <summary>
+		/// Return a new bundle containing the contents of the passed in bundle with
+		/// the passed in public key ring removed.
+		/// </summary>
+		/// <param name="bundle">The <c>PgpPublicKeyRingBundle</c> the key ring is to be removed from.</param>
+		/// <param name="publicKeyRing">The key ring to be removed.</param>
+		/// <returns>A new <c>PgpPublicKeyRingBundle</c> not containing the passed in key ring.</returns>
+		/// <exception cref="ArgumentException">If the keyId for the passed in key ring is not present.</exception>
+        public static PgpPublicKeyRingBundle RemovePublicKeyRing(
+            PgpPublicKeyRingBundle	bundle,
+            PgpPublicKeyRing		publicKeyRing)
+        {
+            long key = publicKeyRing.GetPublicKey().KeyId;
+
+			if (!bundle.pubRings.Contains(key))
+            {
+                throw new ArgumentException("Bundle does not contain a key with a keyId for the passed in ring.");
+            }
+
+			IDictionary newPubRings = Platform.CreateHashtable(bundle.pubRings);
+            IList newOrder = Platform.CreateArrayList(bundle.order);
+
+			newPubRings.Remove(key);
+			newOrder.Remove(key);
+
+			return new PgpPublicKeyRingBundle(newPubRings, newOrder);
+        }
+    }
+}