Setup solution

ModernKeePassLib/Cryptography/CryptoStreamEx.cs

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+/*
+  KeePass Password Safe - The Open-Source Password Manager
+  Copyright (C) 2003-2019 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.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+#if !KeePassUAP
+using System.Security.Cryptography;
+
+namespace ModernKeePassLib.Cryptography
+{
+    public sealed class CryptoStreamEx : CryptoStream
+    {
+        private ICryptoTransform m_t;
+        private SymmetricAlgorithm m_a;
+
+        public CryptoStreamEx(Stream s, ICryptoTransform t, CryptoStreamMode m,
+            SymmetricAlgorithm a) : base(s, t, m)
+        {
+            m_t = t;
+            m_a = a;
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            try { base.Dispose(disposing); }
+            // Unnecessary exception from CryptoStream with
+            // RijndaelManagedTransform when a stream hasn't been
+            // read completely (e.g. incorrect master key)
+            catch (CryptographicException) { }
+            catch (Exception) { Debug.Assert(false); }
+
+            if (disposing)
+            {
+                try { if (m_t != null) { m_t.Dispose(); m_t = null; } }
+                catch (Exception) { Debug.Assert(false); }
+
+                // In .NET 2.0, SymmetricAlgorithm.Dispose() is not public
+                try { if (m_a != null) { m_a.Clear(); m_a = null; } }
+                catch (Exception) { Debug.Assert(false); }
+            }
+        }
+    }
+}
+#endif