mirror of
https://github.com/aaru-dps/Aaru.Server.git
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361 lines
20 KiB
C#
361 lines
20 KiB
C#
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// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : HPOFS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : High Performance Optical File System plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the High Performance Optical File System and shows
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// information.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// 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, but
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// 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, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.DiscImages;
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using Schemas;
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namespace DiscImageChef.Filesystems
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{
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// Information from test floppy images created with OS/2 HPOFS 2.0
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// Need to get IBM document GA32-0224 -> IBM 3995 Optical Library Dataserver Products: Optical Disk Format
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public class HPOFS : IFilesystem
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{
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readonly byte[] hpofsType = {0x48, 0x50, 0x4F, 0x46, 0x53, 0x00, 0x00, 0x00};
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readonly byte[] medinfoSignature = {0x4D, 0x45, 0x44, 0x49, 0x4E, 0x46, 0x4F, 0x20};
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readonly byte[] volinfoSignature = {0x56, 0x4F, 0x4C, 0x49, 0x4E, 0x46, 0x4F, 0x20};
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public FileSystemType XmlFsType { get; private set; }
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public Encoding Encoding { get; private set; }
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public string Name => "High Performance Optical File System";
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public Guid Id => new Guid("1b72dcd5-d031-4757-8a9f-8d2fb18c59e2");
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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if(16 + partition.Start >= partition.End) return false;
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byte[] hpofsBpbSector =
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imagePlugin.ReadSector(0 + partition.Start); // Seek to BIOS parameter block, on logical sector 0
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IntPtr bpbPtr = Marshal.AllocHGlobal(512);
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Marshal.Copy(hpofsBpbSector, 0, bpbPtr, 512);
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BiosParameterBlock bpb = (BiosParameterBlock)Marshal.PtrToStructure(bpbPtr, typeof(BiosParameterBlock));
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Marshal.FreeHGlobal(bpbPtr);
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return bpb.fs_type.SequenceEqual(hpofsType);
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}
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public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
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Encoding encoding)
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{
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Encoding = encoding ?? Encoding.GetEncoding("ibm850");
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information = "";
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StringBuilder sb = new StringBuilder();
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byte[] hpofsBpbSector =
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imagePlugin.ReadSector(0 + partition.Start); // Seek to BIOS parameter block, on logical sector 0
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byte[] medInfoSector =
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imagePlugin.ReadSector(13 + partition.Start); // Seek to media information block, on logical sector 13
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byte[] volInfoSector =
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imagePlugin.ReadSector(14 + partition.Start); // Seek to volume information block, on logical sector 14
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IntPtr bpbPtr = Marshal.AllocHGlobal(512);
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Marshal.Copy(hpofsBpbSector, 0, bpbPtr, 512);
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BiosParameterBlock bpb = (BiosParameterBlock)Marshal.PtrToStructure(bpbPtr, typeof(BiosParameterBlock));
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Marshal.FreeHGlobal(bpbPtr);
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MediaInformationBlock mib =
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BigEndianMarshal.ByteArrayToStructureBigEndian<MediaInformationBlock>(medInfoSector);
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VolumeInformationBlock vib =
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BigEndianMarshal.ByteArrayToStructureBigEndian<VolumeInformationBlock>(volInfoSector);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.oem_name = \"{0}\"",
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StringHandlers.CToString(bpb.oem_name));
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.bps = {0}", bpb.bps);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.spc = {0}", bpb.spc);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.rsectors = {0}", bpb.rsectors);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.fats_no = {0}", bpb.fats_no);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.root_ent = {0}", bpb.root_ent);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.sectors = {0}", bpb.sectors);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.media = 0x{0:X2}", bpb.media);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.spfat = {0}", bpb.spfat);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.sptrk = {0}", bpb.sptrk);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.heads = {0}", bpb.heads);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.hsectors = {0}", bpb.hsectors);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.big_sectors = {0}", bpb.big_sectors);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.drive_no = 0x{0:X2}", bpb.drive_no);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.nt_flags = {0}", bpb.nt_flags);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.signature = 0x{0:X2}", bpb.signature);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.serial_no = 0x{0:X8}", bpb.serial_no);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.volume_label = \"{0}\"",
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StringHandlers.SpacePaddedToString(bpb.volume_label));
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.fs_type = \"{0}\"", StringHandlers.CToString(bpb.fs_type));
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.boot_code is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(bpb.boot_code));
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.unknown = {0}", bpb.unknown);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.unknown2 = {0}", bpb.unknown2);
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DicConsole.DebugWriteLine("HPOFS Plugin", "bpb.signature2 = {0}", bpb.signature2);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.blockId = \"{0}\"", StringHandlers.CToString(mib.blockId));
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.volumeLabel = \"{0}\"",
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StringHandlers.SpacePaddedToString(mib.volumeLabel));
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.comment = \"{0}\"",
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StringHandlers.SpacePaddedToString(mib.comment));
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.serial = 0x{0:X8}", mib.serial);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.creationTimestamp = {0}",
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DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime));
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.codepageType = {0}", mib.codepageType);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.codepage = {0}", mib.codepage);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.rps = {0}", mib.rps);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.bps = {0}", mib.bps);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.bpc = {0}", mib.bpc);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown2 = {0}", mib.unknown2);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.sectors = {0}", mib.sectors);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown3 = {0}", mib.unknown3);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown4 = {0}", mib.unknown4);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.major = {0}", mib.major);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.minor = {0}", mib.minor);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown5 = {0}", mib.unknown5);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown6 = {0}", mib.unknown6);
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DicConsole.DebugWriteLine("HPOFS Plugin", "mib.filler is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(mib.filler));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.blockId = \"{0}\"", StringHandlers.CToString(vib.blockId));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown = {0}", vib.unknown);
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown2 = {0}", vib.unknown2);
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown3 is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(vib.unknown3));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown4 = \"{0}\"",
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StringHandlers.SpacePaddedToString(vib.unknown4));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.owner = \"{0}\"",
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StringHandlers.SpacePaddedToString(vib.owner));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown5 = \"{0}\"",
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StringHandlers.SpacePaddedToString(vib.unknown5));
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown6 = {0}", vib.unknown6);
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.percentFull = {0}", vib.percentFull);
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown7 = {0}", vib.unknown7);
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DicConsole.DebugWriteLine("HPOFS Plugin", "vib.filler is empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(vib.filler));
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sb.AppendLine("High Performance Optical File System");
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sb.AppendFormat("OEM name: {0}", StringHandlers.SpacePaddedToString(bpb.oem_name))
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.AppendLine();
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sb.AppendFormat("{0} bytes per sector", bpb.bps).AppendLine();
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sb.AppendFormat("{0} sectors per cluster", bpb.spc).AppendLine();
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sb.AppendFormat("Media descriptor: 0x{0:X2}", bpb.media).AppendLine();
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sb.AppendFormat("{0} sectors per track", bpb.sptrk).AppendLine();
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sb.AppendFormat("{0} heads", bpb.heads).AppendLine();
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sb.AppendFormat("{0} sectors hidden before BPB", bpb.hsectors).AppendLine();
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sb.AppendFormat("{0} sectors on volume ({1} bytes)", mib.sectors, mib.sectors * bpb.bps).AppendLine();
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sb.AppendFormat("BIOS Drive Number: 0x{0:X2}", bpb.drive_no).AppendLine();
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sb.AppendFormat("Serial number: 0x{0:X8}", mib.serial).AppendLine();
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sb.AppendFormat("Volume label: {0}",
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StringHandlers.SpacePaddedToString(mib.volumeLabel, Encoding))
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.AppendLine();
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sb.AppendFormat("Volume comment: {0}", StringHandlers.SpacePaddedToString(mib.comment, Encoding))
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.AppendLine();
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sb.AppendFormat("Volume owner: {0}", StringHandlers.SpacePaddedToString(vib.owner, Encoding))
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.AppendLine();
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sb.AppendFormat("Volume created on {0}", DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime))
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.AppendLine();
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sb.AppendFormat("Volume uses {0} codepage {1}", mib.codepageType > 0 && mib.codepageType < 3
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? mib.codepageType == 2
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? "EBCDIC"
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: "ASCII"
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: "Unknown", mib.codepage).AppendLine();
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sb.AppendFormat("RPS level: {0}", mib.rps).AppendLine();
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sb.AppendFormat("Filesystem version: {0}.{1}", mib.major, mib.minor).AppendLine();
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sb.AppendFormat("Volume can be filled up to {0}%", vib.percentFull).AppendLine();
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XmlFsType = new FileSystemType
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{
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Clusters = mib.sectors / bpb.spc,
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ClusterSize = bpb.bps * bpb.spc,
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CreationDate = DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime),
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CreationDateSpecified = true,
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DataPreparerIdentifier = StringHandlers.SpacePaddedToString(vib.owner, Encoding),
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Type = "HPOFS",
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VolumeName = StringHandlers.SpacePaddedToString(mib.volumeLabel, Encoding),
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VolumeSerial = $"{mib.serial:X8}",
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SystemIdentifier = StringHandlers.SpacePaddedToString(bpb.oem_name)
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};
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information = sb.ToString();
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}
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/// <summary>
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/// BIOS Parameter Block, at sector 0, little-endian
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/// </summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct BiosParameterBlock
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{
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/// <summary>0x000, Jump to boot code</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
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public byte[] jump;
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/// <summary>0x003, OEM Name, 8 bytes, space-padded</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] oem_name;
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/// <summary>0x00B, Bytes per sector</summary>
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public ushort bps;
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/// <summary>0x00D, Sectors per cluster</summary>
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public byte spc;
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/// <summary>0x00E, Reserved sectors between BPB and... does it have sense in HPFS?</summary>
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public ushort rsectors;
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/// <summary>0x010, Number of FATs... seriously?</summary>
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public byte fats_no;
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/// <summary>0x011, Number of entries on root directory... ok</summary>
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public ushort root_ent;
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/// <summary>0x013, Sectors in volume... doubt it</summary>
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public ushort sectors;
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/// <summary>0x015, Media descriptor</summary>
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public byte media;
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/// <summary>0x016, Sectors per FAT... again</summary>
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public ushort spfat;
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/// <summary>0x018, Sectors per track... you're kidding</summary>
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public ushort sptrk;
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/// <summary>0x01A, Heads... stop!</summary>
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public ushort heads;
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/// <summary>0x01C, Hidden sectors before BPB</summary>
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public uint hsectors;
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/// <summary>0x024, Sectors in volume if > 65535...</summary>
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public uint big_sectors;
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/// <summary>0x028, Drive number</summary>
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public byte drive_no;
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/// <summary>0x029, Volume flags?</summary>
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public byte nt_flags;
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/// <summary>0x02A, EPB signature, 0x29</summary>
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public byte signature;
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/// <summary>0x02B, Volume serial number</summary>
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public uint serial_no;
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/// <summary>0x02F, Volume label, 11 bytes, space-padded</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
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public byte[] volume_label;
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/// <summary>0x03A, Filesystem type, 8 bytes, space-padded ("HPFS ")</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] fs_type;
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/// <summary>Boot code.</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 442)]
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public byte[] boot_code;
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/// <summary>0x1F8, Unknown</summary>
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public uint unknown;
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/// <summary>0x1FC, Unknown</summary>
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public ushort unknown2;
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/// <summary>0x1FE, 0xAA55</summary>
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public ushort signature2;
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}
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/// <summary>
|
|||
|
|
/// Media Information Block, at sector 13, big-endian
|
|||
|
|
/// </summary>
|
|||
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|||
|
|
struct MediaInformationBlock
|
|||
|
|
{
|
|||
|
|
/// <summary>Block identifier "MEDINFO "</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
|
|||
|
|
public byte[] blockId;
|
|||
|
|
/// <summary>Volume label</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
|
|||
|
|
public byte[] volumeLabel;
|
|||
|
|
/// <summary>Volume comment</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 160)]
|
|||
|
|
public byte[] comment;
|
|||
|
|
/// <summary>Volume serial number</summary>
|
|||
|
|
public uint serial;
|
|||
|
|
/// <summary>Volume creation date, DOS format</summary>
|
|||
|
|
public ushort creationDate;
|
|||
|
|
/// <summary>Volume creation time, DOS format</summary>
|
|||
|
|
public ushort creationTime;
|
|||
|
|
/// <summary>
|
|||
|
|
/// Codepage type: 1 ASCII, 2 EBCDIC
|
|||
|
|
/// </summary>
|
|||
|
|
public ushort codepageType;
|
|||
|
|
/// <summary>Codepage</summary>
|
|||
|
|
public ushort codepage;
|
|||
|
|
/// <summary>RPS level</summary>
|
|||
|
|
public uint rps;
|
|||
|
|
/// <summary>Coincides with bytes per sector, and bytes per cluster, need more media</summary>
|
|||
|
|
public ushort bps;
|
|||
|
|
/// <summary>Coincides with bytes per sector, and bytes per cluster, need more media</summary>
|
|||
|
|
public ushort bpc;
|
|||
|
|
/// <summary>Unknown, empty</summary>
|
|||
|
|
public uint unknown2;
|
|||
|
|
/// <summary>Sectors (or clusters)</summary>
|
|||
|
|
public uint sectors;
|
|||
|
|
/// <summary>Unknown, coincides with bps but changing it makes nothing</summary>
|
|||
|
|
public uint unknown3;
|
|||
|
|
/// <summary>Empty?</summary>
|
|||
|
|
public ulong unknown4;
|
|||
|
|
/// <summary>Format major version</summary>
|
|||
|
|
public ushort major;
|
|||
|
|
/// <summary>Format minor version</summary>
|
|||
|
|
public ushort minor;
|
|||
|
|
/// <summary>Empty?</summary>
|
|||
|
|
public uint unknown5;
|
|||
|
|
/// <summary>Unknown, non-empty</summary>
|
|||
|
|
public uint unknown6;
|
|||
|
|
/// <summary>Empty</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 260)]
|
|||
|
|
public byte[] filler;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Volume Information Block, at sector 14, big-endian
|
|||
|
|
/// </summary>
|
|||
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|||
|
|
struct VolumeInformationBlock
|
|||
|
|
{
|
|||
|
|
/// <summary>Block identifier "VOLINFO "</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
|
|||
|
|
public byte[] blockId;
|
|||
|
|
/// <summary>Unknown</summary>
|
|||
|
|
public uint unknown;
|
|||
|
|
/// <summary>Unknown</summary>
|
|||
|
|
public uint unknown2;
|
|||
|
|
/// <summary>Unknown</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)]
|
|||
|
|
public byte[] unknown3;
|
|||
|
|
/// <summary>Unknown, space-padded string</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
|
|||
|
|
public byte[] unknown4;
|
|||
|
|
/// <summary>Owner, space-padded string</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
|
|||
|
|
public byte[] owner;
|
|||
|
|
/// <summary>Unknown, space-padded string</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
|
|||
|
|
public byte[] unknown5;
|
|||
|
|
/// <summary>Unknown, empty?</summary>
|
|||
|
|
public uint unknown6;
|
|||
|
|
/// <summary>Maximum percent full</summary>
|
|||
|
|
public ushort percentFull;
|
|||
|
|
/// <summary>Unknown, empty?</summary>
|
|||
|
|
public ushort unknown7;
|
|||
|
|
/// <summary>Empty</summary>
|
|||
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 384)]
|
|||
|
|
public byte[] filler;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|