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#region Disclaimer / License
// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.IO;
namespace Duplicati.Library.Encryption
{
internal class GPGStreamWrapper : Utility.OverrideableStream
{
private System.Diagnostics.Process m_p;
private System.Threading.Thread m_t;
/// <summary>
/// Wraps a crypto stream, ensuring that it is correctly disposed
/// </summary>
/// <param name="basestream">The stream to wrap</param>
public GPGStreamWrapper(System.Diagnostics.Process p, System.Threading.Thread t, Stream basestream)
: base(basestream)
{
if (p == null)
throw new NullReferenceException("p");
if (t == null)
throw new NullReferenceException("t");
m_p = p;
m_t = t;
}
protected override void Dispose(bool disposing)
{
if (m_p != null)
{
m_basestream.Close();
if (!m_t.Join(5000))
throw new System.Security.Cryptography.CryptographicException(Strings.GPGStreamWrapper.GPGFlushError);
if (!m_p.WaitForExit(5000))
throw new System.Security.Cryptography.CryptographicException(Strings.GPGStreamWrapper.GPGTerminateError);
if (!m_p.StandardError.EndOfStream)
{
string errmsg = m_p.StandardError.ReadToEnd();
if (errmsg.Contains("decryption failed:"))
throw new System.Security.Cryptography.CryptographicException(Strings.GPGStreamWrapper.DecryptionError(errmsg));
}
m_p.Dispose();
m_p = null;
m_t = null;
}
base.Dispose(disposing);
}
}
}
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