Initial commit - WPinternals 2.6

2026-06-19 22:00:12 +10:00 · 2018-10-25 22:35:49 +02:00
commit 396ae57f05
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+//
+// 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.LogicalDiskManager
+{
+    using System;
+    using System.IO;
+    using DiscUtils.Partitions;
+
+    internal class DynamicDisk : IDiagnosticTraceable
+    {
+        private VirtualDisk _disk;
+        private PrivateHeader _header;
+        private Database _database;
+
+        internal DynamicDisk(VirtualDisk disk)
+        {
+            _disk = disk;
+            _header = GetPrivateHeader(_disk);
+
+            TocBlock toc = GetTableOfContents();
+
+            long dbStart = (_header.ConfigurationStartLba * 512) + (toc.Item1Start * 512);
+            _disk.Content.Position = dbStart;
+            _database = new Database(_disk.Content);
+        }
+
+        public SparseStream Content
+        {
+            get { return _disk.Content; }
+        }
+
+        public long DataOffset
+        {
+            get { return _header.DataStartLba; }
+        }
+
+        public Guid Id
+        {
+            get { return new Guid(_header.DiskId); }
+        }
+
+        public Guid GroupId
+        {
+            get { return string.IsNullOrEmpty(_header.DiskGroupId) ? Guid.Empty : new Guid(_header.DiskGroupId); }
+        }
+
+        public Database Database
+        {
+            get { return _database; }
+        }
+
+        public void Dump(TextWriter writer, string linePrefix)
+        {
+            writer.WriteLine(linePrefix + "DISK (" + _header.DiskId + ")");
+            writer.WriteLine(linePrefix + "      Metadata Version: " + ((_header.Version >> 16) & 0xFFFF) + "." + (_header.Version & 0xFFFF));
+            writer.WriteLine(linePrefix + "             Timestamp: " + _header.Timestamp);
+            writer.WriteLine(linePrefix + "               Disk Id: " + _header.DiskId);
+            writer.WriteLine(linePrefix + "               Host Id: " + _header.HostId);
+            writer.WriteLine(linePrefix + "         Disk Group Id: " + _header.DiskGroupId);
+            writer.WriteLine(linePrefix + "       Disk Group Name: " + _header.DiskGroupName);
+            writer.WriteLine(linePrefix + "            Data Start: " + _header.DataStartLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "             Data Size: " + _header.DataSizeLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "   Configuration Start: " + _header.ConfigurationStartLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "    Configuration Size: " + _header.ConfigurationSizeLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "              TOC Size: " + _header.TocSizeLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "              Next TOC: " + _header.NextTocLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "     Number of Configs: " + _header.NumberOfConfigs);
+            writer.WriteLine(linePrefix + "           Config Size: " + _header.ConfigurationSizeLba + " (Sectors)");
+            writer.WriteLine(linePrefix + "        Number of Logs: " + _header.NumberOfLogs);
+            writer.WriteLine(linePrefix + "              Log Size: " + _header.LogSizeLba + " (Sectors)");
+        }
+
+        internal static PrivateHeader GetPrivateHeader(VirtualDisk disk)
+        {
+            if (disk.IsPartitioned)
+            {
+                long headerPos = 0;
+                PartitionTable pt = disk.Partitions;
+                if (pt is BiosPartitionTable)
+                {
+                    headerPos = 0xc00;
+                }
+                else
+                {
+                    foreach (var part in pt.Partitions)
+                    {
+                        if (part.GuidType == GuidPartitionTypes.WindowsLdmMetadata)
+                        {
+                            headerPos = part.LastSector * Sizes.Sector;
+                        }
+                    }
+                }
+
+                if (headerPos != 0)
+                {
+                    disk.Content.Position = headerPos;
+                    byte[] buffer = new byte[Sizes.Sector];
+                    disk.Content.Read(buffer, 0, buffer.Length);
+
+                    PrivateHeader hdr = new PrivateHeader();
+                    hdr.ReadFrom(buffer, 0);
+                    return hdr;
+                }
+            }
+
+            return null;
+        }
+
+        private TocBlock GetTableOfContents()
+        {
+            byte[] buffer = new byte[_header.TocSizeLba * 512];
+            _disk.Content.Position = (_header.ConfigurationStartLba * 512) + (1 * _header.TocSizeLba * 512);
+
+            _disk.Content.Read(buffer, 0, buffer.Length);
+            TocBlock tocBlock = new TocBlock();
+            tocBlock.ReadFrom(buffer, 0);
+
+            if (tocBlock.Signature == "TOCBLOCK")
+            {
+                return tocBlock;
+            }
+
+            return null;
+        }
+    }
+}