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// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System.IO;
namespace SharpCifs.Smb
{
public class SecurityDescriptor
{
public int Type;
public Ace[] Aces;
public SecurityDescriptor()
{
}
/// <exception cref="System.IO.IOException"></exception>
public SecurityDescriptor(byte[] buffer, int bufferIndex, int len)
{
Decode(buffer, bufferIndex, len);
}
/// <exception cref="System.IO.IOException"></exception>
public virtual int Decode(byte[] buffer, int bufferIndex, int len)
{
int start = bufferIndex;
bufferIndex++;
// revision
bufferIndex++;
Type = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to owner sid
bufferIndex += 4;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to group sid
bufferIndex += 4;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to sacl
bufferIndex += 4;
int daclOffset = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
bufferIndex = start + daclOffset;
bufferIndex++;
// revision
bufferIndex++;
int size = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
int numAces = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
if (numAces > 4096)
{
throw new IOException("Invalid SecurityDescriptor");
}
if (daclOffset != 0)
{
Aces = new Ace[numAces];
for (int i = 0; i < numAces; i++)
{
Aces[i] = new Ace();
bufferIndex += Aces[i].Decode(buffer, bufferIndex);
}
}
else
{
Aces = null;
}
return bufferIndex - start;
}
public override string ToString()
{
string ret = "SecurityDescriptor:\n";
if (Aces != null)
{
for (int ai = 0; ai < Aces.Length; ai++)
{
ret += Aces[ai] + "\n";
}
}
else
{
ret += "NULL";
}
return ret;
}
}
}
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