KeePassLib finally portable (but version 2.19)

Windows Store project stub

ModernKeePassLib/Keys/KeyProviderPool.cs

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+/*
+  KeePass Password Safe - The Open-Source Password Manager
+  Copyright (C) 2003-2012 Dominik Reichl <dominik.reichl@t-online.de>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+using System.Diagnostics;
+
+namespace ModernKeePassLib.Keys
+{
+	public sealed class KeyProviderPool : IEnumerable<KeyProvider>
+	{
+		private List<KeyProvider> m_vProviders = new List<KeyProvider>();
+
+		public int Count
+		{
+			get { return m_vProviders.Count; }
+		}
+
+		IEnumerator IEnumerable.GetEnumerator()
+		{
+			return m_vProviders.GetEnumerator();
+		}
+
+		public IEnumerator<KeyProvider> GetEnumerator()
+		{
+			return m_vProviders.GetEnumerator();
+		}
+
+		public void Add(KeyProvider prov)
+		{
+			Debug.Assert(prov != null); if(prov == null) throw new ArgumentNullException("prov");
+
+			m_vProviders.Add(prov);
+		}
+
+		public bool Remove(KeyProvider prov)
+		{
+			Debug.Assert(prov != null); if(prov == null) throw new ArgumentNullException("prov");
+
+			return m_vProviders.Remove(prov);
+		}
+
+		public KeyProvider Get(string strProviderName)
+		{
+			if(strProviderName == null) throw new ArgumentNullException("strProviderName");
+
+			foreach(KeyProvider prov in m_vProviders)
+			{
+				if(prov.Name == strProviderName) return prov;
+			}
+
+			return null;
+		}
+
+		public bool IsKeyProvider(string strName)
+		{
+			Debug.Assert(strName != null); if(strName == null) throw new ArgumentNullException("strName");
+
+			foreach(KeyProvider prov in m_vProviders)
+			{
+				if(prov.Name == strName) return true;
+			}
+
+			return false;
+		}
+
+		internal byte[] GetKey(string strProviderName, KeyProviderQueryContext ctx,
+			out bool bPerformHash)
+		{
+			Debug.Assert(strProviderName != null); if(strProviderName == null) throw new ArgumentNullException("strProviderName");
+
+			bPerformHash = true;
+
+			foreach(KeyProvider prov in m_vProviders)
+			{
+				if(prov.Name == strProviderName)
+				{
+					bPerformHash = !prov.DirectKey;
+					return prov.GetKey(ctx);
+				}
+			}
+
+			Debug.Assert(false);
+			return null;
+		}
+	}
+}