1 files changed, 101 insertions, 0 deletions
diff --git a/Emby.Server.Implementations/IO/SharpCifs/Smb/SecurityDescriptor.cs b/Emby.Server.Implementations/IO/SharpCifs/Smb/SecurityDescriptor.cs
new file mode 100644
index 000000000..8a424a019
--- /dev/null
+++ b/Emby.Server.Implementations/IO/SharpCifs/Smb/SecurityDescriptor.cs
@@ -0,0 +1,101 @@
+// 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;
+		}
+	}
+}