Initial commit - WPinternals 2.6

2026-06-19 22:00:12 +10:00 · 2018-10-25 22:35:49 +02:00
commit 396ae57f05
483 changed files with 159677 additions and 0 deletions
@@ -0,0 +1,117 @@
+//
+// 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.Partitions
+{
+    using System.Collections.Generic;
+    using System.IO;
+
+    internal class BiosExtendedPartitionTable
+    {
+        private Stream _disk;
+        private uint _firstSector;
+
+        public BiosExtendedPartitionTable(Stream disk, uint firstSector)
+        {
+            _disk = disk;
+            _firstSector = firstSector;
+        }
+
+        public BiosPartitionRecord[] GetPartitions()
+        {
+            List<BiosPartitionRecord> result = new List<BiosPartitionRecord>();
+
+            uint partPos = _firstSector;
+            while (partPos != 0)
+            {
+                _disk.Position = ((long)partPos) * Utilities.SectorSize;
+                byte[] sector = Utilities.ReadFully(_disk, Utilities.SectorSize);
+                if (sector[510] != 0x55 || sector[511] != 0xAA)
+                {
+                    throw new IOException("Invalid extended partition sector");
+                }
+
+                uint nextPartPos = 0;
+                for (int offset = 0x1BE; offset <= 0x1EE; offset += 0x10)
+                {
+                    BiosPartitionRecord thisPart = new BiosPartitionRecord(sector, offset, partPos, -1);
+
+                    if (thisPart.StartCylinder != 0 || thisPart.StartHead != 0 || thisPart.StartSector != 0)
+                    {
+                        if (thisPart.PartitionType != 0x05 && thisPart.PartitionType != 0x0F)
+                        {
+                            result.Add(thisPart);
+                        }
+                        else
+                        {
+                            nextPartPos = _firstSector + thisPart.LBAStart;
+                        }
+                    }
+                }
+
+                partPos = nextPartPos;
+            }
+
+            return result.ToArray();
+        }
+
+        /// <summary>
+        /// Gets all of the disk ranges containing partition table data.
+        /// </summary>
+        /// <returns>Set of stream extents, indicated as byte offset from the start of the disk.</returns>
+        public IEnumerable<StreamExtent> GetMetadataDiskExtents()
+        {
+            List<StreamExtent> extents = new List<StreamExtent>();
+
+            uint partPos = _firstSector;
+            while (partPos != 0)
+            {
+                extents.Add(new StreamExtent(((long)partPos) * Utilities.SectorSize, Utilities.SectorSize));
+
+                _disk.Position = ((long)partPos) * Utilities.SectorSize;
+                byte[] sector = Utilities.ReadFully(_disk, Utilities.SectorSize);
+                if (sector[510] != 0x55 || sector[511] != 0xAA)
+                {
+                    throw new IOException("Invalid extended partition sector");
+                }
+
+                uint nextPartPos = 0;
+                for (int offset = 0x1BE; offset <= 0x1EE; offset += 0x10)
+                {
+                    BiosPartitionRecord thisPart = new BiosPartitionRecord(sector, offset, partPos, -1);
+
+                    if (thisPart.StartCylinder != 0 || thisPart.StartHead != 0 || thisPart.StartSector != 0)
+                    {
+                        if (thisPart.PartitionType == 0x05 || thisPart.PartitionType == 0x0F)
+                        {
+                            nextPartPos = _firstSector + thisPart.LBAStart;
+                        }
+                    }
+                }
+
+                partPos = nextPartPos;
+            }
+
+            return extents;
+        }
+    }
+}