102 lines
2.7 KiB
C#
102 lines
2.7 KiB
C#
// This code is derived from jcifs smb client library <jcifs at samba dot org>
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// Ported by J. Arturo <webmaster at komodosoft dot net>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System.IO;
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namespace SharpCifs.Smb
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{
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public class SecurityDescriptor
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{
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public int Type;
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public Ace[] Aces;
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public SecurityDescriptor()
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{
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}
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/// <exception cref="System.IO.IOException"></exception>
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public SecurityDescriptor(byte[] buffer, int bufferIndex, int len)
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{
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Decode(buffer, bufferIndex, len);
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}
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/// <exception cref="System.IO.IOException"></exception>
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public virtual int Decode(byte[] buffer, int bufferIndex, int len)
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{
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int start = bufferIndex;
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bufferIndex++;
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// revision
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bufferIndex++;
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Type = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
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bufferIndex += 2;
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ServerMessageBlock.ReadInt4(buffer, bufferIndex);
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// offset to owner sid
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bufferIndex += 4;
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ServerMessageBlock.ReadInt4(buffer, bufferIndex);
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// offset to group sid
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bufferIndex += 4;
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ServerMessageBlock.ReadInt4(buffer, bufferIndex);
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// offset to sacl
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bufferIndex += 4;
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int daclOffset = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
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bufferIndex = start + daclOffset;
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bufferIndex++;
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// revision
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bufferIndex++;
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int size = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
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bufferIndex += 2;
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int numAces = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
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bufferIndex += 4;
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if (numAces > 4096)
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{
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throw new IOException("Invalid SecurityDescriptor");
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}
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if (daclOffset != 0)
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{
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Aces = new Ace[numAces];
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for (int i = 0; i < numAces; i++)
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{
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Aces[i] = new Ace();
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bufferIndex += Aces[i].Decode(buffer, bufferIndex);
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}
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}
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else
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{
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Aces = null;
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}
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return bufferIndex - start;
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}
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public override string ToString()
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{
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string ret = "SecurityDescriptor:\n";
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if (Aces != null)
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{
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for (int ai = 0; ai < Aces.Length; ai++)
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{
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ret += Aces[ai] + "\n";
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}
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}
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else
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{
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ret += "NULL";
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}
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return ret;
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}
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}
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}
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