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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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130
ModernKeePassLib/Security/ProtectedString.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
@@ -23,10 +23,9 @@ using System.Diagnostics;
using ModernKeePassLib.Cryptography;
using ModernKeePassLib.Utility;
using System.Threading.Tasks;
#if KeePassLibSD
using ModernKeePassLibSD;
using KeePassLibSD;
#endif
// SecureString objects are limited to 65536 characters, don't use
@@ -48,7 +47,7 @@ namespace ModernKeePassLib.Security
private bool m_bIsProtected;
private static ProtectedString m_psEmpty = new ProtectedString();
private static readonly ProtectedString m_psEmpty = new ProtectedString();
public static ProtectedString Empty
{
get { return m_psEmpty; }
@@ -56,7 +55,7 @@ namespace ModernKeePassLib.Security
/// <summary>
/// A flag specifying whether the <c>ProtectedString</c> object
/// has turned on in-memory protection or not.
/// has turned on memory protection or not.
/// </summary>
public bool IsProtected
{
@@ -80,10 +79,6 @@ namespace ModernKeePassLib.Security
{
get
{
Debug.Assert(false, "not yet implemented");
return 0;
#if TODO
if(m_nCachedLength >= 0) return m_nCachedLength;
ProtectedBinary pBin = m_pbUtf8; // Local ref for thread-safety
@@ -100,7 +95,6 @@ namespace ModernKeePassLib.Security
}
return m_nCachedLength;
#endif
}
}
@@ -118,10 +112,9 @@ namespace ModernKeePassLib.Security
/// to the value supplied in the parameters.
/// </summary>
/// <param name="bEnableProtection">If this parameter is <c>true</c>,
/// the string will be protected in-memory (encrypted). If it
/// the string will be protected in memory (encrypted). If it
/// is <c>false</c>, the string will be stored as plain-text.</param>
/// <param name="strValue">The initial string value. This
/// parameter won't be modified.</param>
/// <param name="strValue">The initial string value.</param>
public ProtectedString(bool bEnableProtection, string strValue)
{
Init(bEnableProtection, strValue);
@@ -132,7 +125,7 @@ namespace ModernKeePassLib.Security
/// to the value supplied in the parameters (UTF-8 encoded string).
/// </summary>
/// <param name="bEnableProtection">If this parameter is <c>true</c>,
/// the string will be protected in-memory (encrypted). If it
/// the string will be protected in memory (encrypted). If it
/// is <c>false</c>, the string will be stored as plain-text.</param>
/// <param name="vUtf8Value">The initial string value, encoded as
/// UTF-8 byte array. This parameter won't be modified; the caller
@@ -150,10 +143,9 @@ namespace ModernKeePassLib.Security
/// <param name="xbProtected"><c>XorredBuffer</c> object containing the
/// string in UTF-8 representation. The UTF-8 string must not
/// be <c>null</c>-terminated.</param>
/// <exception cref="System.ArgumentNullException">Thrown if the input
/// parameter is <c>null</c>.</exception>
public ProtectedString(bool bEnableProtection, XorredBuffer xbProtected)
{
Debug.Assert(xbProtected != null);
if(xbProtected == null) throw new ArgumentNullException("xbProtected");
byte[] pb = xbProtected.ReadPlainText();
@@ -196,7 +188,6 @@ namespace ModernKeePassLib.Security
if(m_strPlainText != null) return m_strPlainText;
byte[] pb = ReadUtf8();
string str = ((pb.Length == 0) ? string.Empty :
StrUtil.Utf8.GetString(pb, 0, pb.Length));
// No need to clear pb
@@ -218,11 +209,7 @@ namespace ModernKeePassLib.Security
public byte[] ReadUtf8()
{
ProtectedBinary pBin = m_pbUtf8; // Local ref for thread-safety
if (pBin != null)
{
return pBin.ReadData();
}
if(pBin != null) return pBin.ReadData();
return StrUtil.Utf8.GetBytes(m_strPlainText);
}
@@ -233,8 +220,6 @@ namespace ModernKeePassLib.Security
/// </summary>
/// <param name="crsRandomSource">Random number source.</param>
/// <returns>Protected string.</returns>
/// <exception cref="System.ArgumentNullException">Thrown if the input
/// parameter is <c>null</c>.</exception>
public byte[] ReadXorredString(CryptoRandomStream crsRandomSource)
{
Debug.Assert(crsRandomSource != null); if(crsRandomSource == null) throw new ArgumentNullException("crsRandomSource");
@@ -243,7 +228,7 @@ namespace ModernKeePassLib.Security
uint uLen = (uint)pbData.Length;
byte[] randomPad = crsRandomSource.GetRandomBytes(uLen);
Debug.Assert(randomPad.Length == uLen);
Debug.Assert(randomPad.Length == pbData.Length);
for(uint i = 0; i < uLen; ++i)
pbData[i] ^= randomPad[i];
@@ -260,5 +245,100 @@ namespace ModernKeePassLib.Security
MemUtil.ZeroByteArray(pb);
return ps;
}
public ProtectedString Insert(int iStart, string strInsert)
{
if(iStart < 0) throw new ArgumentOutOfRangeException("iStart");
if(strInsert == null) throw new ArgumentNullException("strInsert");
if(strInsert.Length == 0) return this;
// Only operate directly with strings when m_bIsProtected is
// false, not in the case of non-null m_strPlainText, because
// the operation creates a new sequence in memory
if(!m_bIsProtected)
return new ProtectedString(false, ReadString().Insert(
iStart, strInsert));
UTF8Encoding utf8 = StrUtil.Utf8;
byte[] pb = ReadUtf8();
char[] v = utf8.GetChars(pb);
char[] vNew;
try
{
if(iStart > v.Length)
throw new ArgumentOutOfRangeException("iStart");
char[] vIns = strInsert.ToCharArray();
vNew = new char[v.Length + vIns.Length];
Array.Copy(v, 0, vNew, 0, iStart);
Array.Copy(vIns, 0, vNew, iStart, vIns.Length);
Array.Copy(v, iStart, vNew, iStart + vIns.Length,
v.Length - iStart);
}
finally
{
Array.Clear(v, 0, v.Length);
MemUtil.ZeroByteArray(pb);
}
byte[] pbNew = utf8.GetBytes(vNew);
ProtectedString ps = new ProtectedString(m_bIsProtected, pbNew);
Debug.Assert(utf8.GetString(pbNew, 0, pbNew.Length) ==
ReadString().Insert(iStart, strInsert));
Array.Clear(vNew, 0, vNew.Length);
MemUtil.ZeroByteArray(pbNew);
return ps;
}
public ProtectedString Remove(int iStart, int nCount)
{
if(iStart < 0) throw new ArgumentOutOfRangeException("iStart");
if(nCount < 0) throw new ArgumentOutOfRangeException("nCount");
if(nCount == 0) return this;
// Only operate directly with strings when m_bIsProtected is
// false, not in the case of non-null m_strPlainText, because
// the operation creates a new sequence in memory
if(!m_bIsProtected)
return new ProtectedString(false, ReadString().Remove(
iStart, nCount));
UTF8Encoding utf8 = StrUtil.Utf8;
byte[] pb = ReadUtf8();
char[] v = utf8.GetChars(pb);
char[] vNew;
try
{
if((iStart + nCount) > v.Length)
throw new ArgumentException("iStart + nCount");
vNew = new char[v.Length - nCount];
Array.Copy(v, 0, vNew, 0, iStart);
Array.Copy(v, iStart + nCount, vNew, iStart, v.Length -
(iStart + nCount));
}
finally
{
Array.Clear(v, 0, v.Length);
MemUtil.ZeroByteArray(pb);
}
byte[] pbNew = utf8.GetBytes(vNew);
ProtectedString ps = new ProtectedString(m_bIsProtected, pbNew);
Debug.Assert(utf8.GetString(pbNew, 0, pbNew.Length) ==
ReadString().Remove(iStart, nCount));
Array.Clear(vNew, 0, vNew.Length);
MemUtil.ZeroByteArray(pbNew);
return ps;
}
}
}