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ModernKeePassLib custom PCL version

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This commit is contained in:
Geoffroy Bonneville
2017-09-22 15:40:24 +02:00
parent baba70e56d
commit a43bc20eb3
98 changed files with 6049 additions and 3038 deletions
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247
ModernKeePassLib/Cryptography/HashingStreamEx.cs
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@@ -1,6 +1,6 @@
/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2012 Dominik Reichl <dominik.reichl@t-online.de>
Copyright (C) 2003-2014 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
@@ -17,85 +17,80 @@
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using ModernKeePassLib.Utility;
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
#if PCL
using Windows.Security.Cryptography;
#else
using System.Security.Cryptography;
#endif
using System.Diagnostics;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Security.Cryptography.Core;
using ModernKeePassLib.Utility;
using CryptographicHash = Windows.Security.Cryptography.Core.CryptographicHash;
namespace ModernKeePassLib.Cryptography
{
public sealed class HashingStreamEx : Stream
{
private Stream m_sBaseStream;
private bool m_bWriting;
private Queue<byte[]> m_DataToHash;
//private HashAlgorithm m_hash;
public byte[] Hash
{
get
{
int len = 0;
foreach (byte[] block in m_DataToHash)
{
len += block.Length;
}
byte[] dataToHash = new byte[len];
int pos = 0;
while(m_DataToHash.Count > 0)
{
byte[] block = m_DataToHash.Dequeue();
Array.Copy(block, 0, dataToHash, pos, block.Length);
pos += block.Length;
}
byte[] hash = SHA256Managed.Instance.ComputeHash(dataToHash);
return hash;
}
}
public override bool CanRead
{
get { return !m_bWriting; }
}
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return m_bWriting; }
}
public override long Length
{
get { return m_sBaseStream.Length; }
}
public override long Position
{
get { return m_sBaseStream.Position; }
set { throw new NotSupportedException(); }
}
public HashingStreamEx(Stream sBaseStream, bool bWriting, CryptographicHash hashAlgorithm)
{
if (sBaseStream == null) throw new ArgumentNullException("sBaseStream");
m_sBaseStream = sBaseStream;
m_bWriting = bWriting;
#if KeePassWinRT
m_DataToHash = new Queue<byte[]>();
public sealed class HashingStreamEx : Stream
{
private Stream m_sBaseStream;
private bool m_bWriting;
#if PCL
private CryptographicHash m_hash;
#else
#if !KeePassLibSD
private HashAlgorithm m_hash;
#endif
private byte[] m_pbFinalHash = null;
public byte[] Hash
{
get { return m_pbFinalHash; }
}
public override bool CanRead
{
get { return !m_bWriting; }
}
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return m_bWriting; }
}
public override long Length
{
get { return m_sBaseStream.Length; }
}
public override long Position
{
get { return m_sBaseStream.Position; }
set { throw new NotSupportedException(); }
}
#if PCL
public HashingStreamEx(Stream sBaseStream, bool bWriting, string hashAlgorithm)
#else
public HashingStreamEx(Stream sBaseStream, bool bWriting, HashAlgorithm hashAlgorithm)
#endif
{
if(sBaseStream == null)
throw new ArgumentNullException("sBaseStream");
m_sBaseStream = sBaseStream;
m_bWriting = bWriting;
#if PCL
m_hash = HashAlgorithmProvider.OpenAlgorithm(hashAlgorithm ?? HashAlgorithmNames.Sha256).CreateHash();
#elif !KeePassLibSD
m_hash = (hashAlgorithm ?? new SHA256Managed());
#else // KeePassLibSD
m_hash = null;
@@ -105,91 +100,98 @@ namespace ModernKeePassLib.Cryptography
try { if(m_hash == null) m_hash = HashAlgorithm.Create(); }
catch(Exception) { }
#endif
#endif // KeePassWinRT
if(m_hash == null) { Debug.Assert(false); return; }
#if TODO
// Bert TODO: For the time being, only built-in Hash algorithm are supported.
if (m_hash == null) { Debug.Assert(false); return; }
// Validate hash algorithm
if((!m_hash.CanReuseTransform) || (!m_hash.CanTransformMultipleBlocks) ||
/*if((!m_hash.CanReuseTransform) || (!m_hash.CanTransformMultipleBlocks) ||
(m_hash.InputBlockSize != 1) || (m_hash.OutputBlockSize != 1))
{
#if DEBUG
#if false && DEBUG
MessageService.ShowWarning("Broken HashAlgorithm object in HashingStreamEx.");
#endif
m_hash = null;
}
#endif
}
}*/
}
public override void Flush()
{
m_sBaseStream.Flush();
}
/*public override void Close()
public override void Flush()
{
m_sBaseStream.Flush();
}
#if PCL || KeePassRT
protected override void Dispose(bool disposing)
{
if(!disposing) return;
#else
public override void Close()
{
#endif
if(m_hash != null)
{
try
{
m_hash.TransformFinalBlock(new byte[0], 0, 0);
//m_hash.TransformFinalBlock(new byte[0], 0, 0);
#if PCL
m_pbFinalHash = m_hash.GetValueAndReset().ToArray();
#else
m_pbFinalHash = m_hash.Hash;
#endif
}
catch(Exception) { Debug.Assert(false); }
m_hash = null;
}
m_sBaseStream.Close();
m_sBaseStream.Dispose();
}
}*/
public override long Seek(long lOffset, SeekOrigin soOrigin)
{
throw new NotSupportedException();
}
public override long Seek(long lOffset, SeekOrigin soOrigin)
{
throw new NotSupportedException();
}
public override void SetLength(long lValue)
{
throw new NotSupportedException();
}
public override void SetLength(long lValue)
{
throw new NotSupportedException();
}
public override int Read(byte[] pbBuffer, int nOffset, int nCount)
{
if(m_bWriting) throw new InvalidOperationException();
public override int Read(byte[] pbBuffer, int nOffset, int nCount)
{
int nRead = m_sBaseStream.Read(pbBuffer, nOffset, nCount);
int nPartialRead = nRead;
while((nRead < nCount) && (nPartialRead != 0))
{
nPartialRead = m_sBaseStream.Read(pbBuffer, nOffset + nRead,
nCount - nRead);
nRead += nPartialRead;
}
if (m_bWriting) throw new InvalidOperationException();
#if DEBUG
byte[] pbOrg = new byte[pbBuffer.Length];
Array.Copy(pbBuffer, pbOrg, pbBuffer.Length);
#endif
int nRead = m_sBaseStream.Read(pbBuffer, nOffset, nCount);
/*if((m_hash != null) && (nRead > 0))
m_hash.TransformBlock(pbBuffer, nOffset, nRead, pbBuffer, nOffset);*/
// Mono bug workaround (LaunchPad 798910)
int nPartialRead = nRead;
while ((nRead < nCount) && (nPartialRead != 0))
{
nPartialRead = m_sBaseStream.Read(pbBuffer, nOffset + nRead,
nCount - nRead);
nRead += nPartialRead;
}
#if DEBUG
Debug.Assert(MemUtil.ArraysEqual(pbBuffer, pbOrg));
#endif
byte[] pbOrg = new byte[nRead];
Array.Copy(pbBuffer, pbOrg, nRead);
m_DataToHash.Enqueue(pbOrg);
return nRead;
}
return nRead;
}
public override void Write(byte[] pbBuffer, int nOffset, int nCount)
{
public override void Write(byte[] pbBuffer, int nOffset, int nCount)
{
if(!m_bWriting) throw new InvalidOperationException();
#if DEBUG
byte[] pbOrg = new byte[pbBuffer.Length];
Array.Copy(pbBuffer, pbOrg, pbBuffer.Length);
#endif
// TODO: implement this
/*if((m_hash != null) && (nCount > 0))
m_hash.TransformBlock(pbBuffer, nOffset, nCount, pbBuffer, nOffset);*/
@@ -198,7 +200,6 @@ namespace ModernKeePassLib.Cryptography
#endif
m_sBaseStream.Write(pbBuffer, nOffset, nCount);
}
}
}
}
}