Initial commit - WPinternals 2.6

DiscUtils/Ntfs/SecurityDescriptorRecord.cs

@@ -0,0 +1,77 @@
+//
+// Copyright (c) 2008-2011, Kenneth Bell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+namespace DiscUtils.Ntfs
+{
+    using System;
+
+    internal sealed class SecurityDescriptorRecord : IByteArraySerializable
+    {
+        public uint Hash;
+        public uint Id;
+        public long OffsetInFile;
+        public uint EntrySize;
+        public byte[] SecurityDescriptor;
+
+        public int Size
+        {
+            get { return SecurityDescriptor.Length + 0x14; }
+        }
+
+        public bool Read(byte[] buffer, int offset)
+        {
+            Hash = Utilities.ToUInt32LittleEndian(buffer, offset + 0x00);
+            Id = Utilities.ToUInt32LittleEndian(buffer, offset + 0x04);
+            OffsetInFile = Utilities.ToInt64LittleEndian(buffer, offset + 0x08);
+            EntrySize = Utilities.ToUInt32LittleEndian(buffer, offset + 0x10);
+
+            if (EntrySize > 0)
+            {
+                SecurityDescriptor = new byte[EntrySize - 0x14];
+                Array.Copy(buffer, offset + 0x14, SecurityDescriptor, 0, SecurityDescriptor.Length);
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public int ReadFrom(byte[] buffer, int offset)
+        {
+            Read(buffer, offset);
+            return SecurityDescriptor.Length + 0x14;
+        }
+
+        public void WriteTo(byte[] buffer, int offset)
+        {
+            EntrySize = (uint)Size;
+
+            Utilities.WriteBytesLittleEndian(Hash, buffer, offset + 0x00);
+            Utilities.WriteBytesLittleEndian(Id, buffer, offset + 0x04);
+            Utilities.WriteBytesLittleEndian(OffsetInFile, buffer, offset + 0x08);
+            Utilities.WriteBytesLittleEndian(EntrySize, buffer, offset + 0x10);
+
+            Array.Copy(SecurityDescriptor, 0, buffer, offset + 0x14, SecurityDescriptor.Length);
+        }
+    }
+}