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Aaru/Aaru.Filesystems/HPOFS/Info.cs

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C#
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// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Info.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : High Performance Optical File System plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the High Performance Optical File System and shows
// information.
//
// --[ License ] --------------------------------------------------------------
//
// 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, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2025 Natalia Portillo
// ****************************************************************************/
using System.Linq;
using System.Text;
using Aaru.CommonTypes.AaruMetadata;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
using Aaru.Logging;
using Partition = Aaru.CommonTypes.Partition;
namespace Aaru.Filesystems;
public sealed partial class HPOFS
{
#region IFilesystem Members
/// <inheritdoc />
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if(16 + partition.Start >= partition.End) return false;
ErrorNumber errno =
imagePlugin.ReadSector(0 + partition.Start,
out byte[] hpofsBpbSector); // Seek to BIOS parameter block, on logical sector 0
if(errno != ErrorNumber.NoError) return false;
if(hpofsBpbSector.Length < 512) return false;
BiosParameterBlock bpb = Marshal.ByteArrayToStructureLittleEndian<BiosParameterBlock>(hpofsBpbSector);
return bpb.fs_type.SequenceEqual(_type);
}
/// <inheritdoc />
public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
out FileSystem metadata)
{
encoding ??= Encoding.GetEncoding("ibm850");
information = "";
metadata = new FileSystem();
var sb = new StringBuilder();
ErrorNumber errno =
imagePlugin.ReadSector(0 + partition.Start,
out byte[] hpofsBpbSector); // Seek to BIOS parameter block, on logical sector 0
if(errno != ErrorNumber.NoError) return;
errno = imagePlugin.ReadSector(13 + partition.Start,
out byte[] medInfoSector); // Seek to media information block, on logical sector 13
if(errno != ErrorNumber.NoError) return;
errno = imagePlugin.ReadSector(14 + partition.Start,
out byte[] volInfoSector); // Seek to volume information block, on logical sector 14
if(errno != ErrorNumber.NoError) return;
BiosParameterBlock bpb = Marshal.ByteArrayToStructureLittleEndian<BiosParameterBlock>(hpofsBpbSector);
MediaInformationBlock mib = Marshal.ByteArrayToStructureBigEndian<MediaInformationBlock>(medInfoSector);
VolumeInformationBlock vib = Marshal.ByteArrayToStructureBigEndian<VolumeInformationBlock>(volInfoSector);
AaruLogging.Debug(MODULE_NAME, "bpb.oem_name = \"{0}\"", StringHandlers.CToString(bpb.oem_name));
AaruLogging.Debug(MODULE_NAME, "bpb.bps = {0}", bpb.bps);
AaruLogging.Debug(MODULE_NAME, "bpb.spc = {0}", bpb.spc);
AaruLogging.Debug(MODULE_NAME, "bpb.rsectors = {0}", bpb.rsectors);
AaruLogging.Debug(MODULE_NAME, "bpb.fats_no = {0}", bpb.fats_no);
AaruLogging.Debug(MODULE_NAME, "bpb.root_ent = {0}", bpb.root_ent);
AaruLogging.Debug(MODULE_NAME, "bpb.sectors = {0}", bpb.sectors);
AaruLogging.Debug(MODULE_NAME, "bpb.media = 0x{0:X2}", bpb.media);
AaruLogging.Debug(MODULE_NAME, "bpb.spfat = {0}", bpb.spfat);
AaruLogging.Debug(MODULE_NAME, "bpb.sptrk = {0}", bpb.sptrk);
AaruLogging.Debug(MODULE_NAME, "bpb.heads = {0}", bpb.heads);
AaruLogging.Debug(MODULE_NAME, "bpb.hsectors = {0}", bpb.hsectors);
AaruLogging.Debug(MODULE_NAME, "bpb.big_sectors = {0}", bpb.big_sectors);
AaruLogging.Debug(MODULE_NAME, "bpb.drive_no = 0x{0:X2}", bpb.drive_no);
AaruLogging.Debug(MODULE_NAME, "bpb.nt_flags = {0}", bpb.nt_flags);
AaruLogging.Debug(MODULE_NAME, "bpb.signature = 0x{0:X2}", bpb.signature);
AaruLogging.Debug(MODULE_NAME, "bpb.serial_no = 0x{0:X8}", bpb.serial_no);
AaruLogging.Debug(MODULE_NAME,
"bpb.volume_label = \"{0}\"",
StringHandlers.SpacePaddedToString(bpb.volume_label));
AaruLogging.Debug(MODULE_NAME, "bpb.fs_type = \"{0}\"", StringHandlers.CToString(bpb.fs_type));
AaruLogging.Debug(MODULE_NAME,
"bpb.boot_code is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(bpb.boot_code));
AaruLogging.Debug(MODULE_NAME, "bpb.unknown = {0}", bpb.unknown);
AaruLogging.Debug(MODULE_NAME, "bpb.unknown2 = {0}", bpb.unknown2);
AaruLogging.Debug(MODULE_NAME, "bpb.signature2 = {0}", bpb.signature2);
AaruLogging.Debug(MODULE_NAME, "mib.blockId = \"{0}\"", StringHandlers.CToString(mib.blockId));
AaruLogging.Debug(MODULE_NAME,
"mib.volumeLabel = \"{0}\"",
StringHandlers.SpacePaddedToString(mib.volumeLabel));
AaruLogging.Debug(MODULE_NAME,
"mib.comment = \"{0}\"",
StringHandlers.SpacePaddedToString(mib.comment));
AaruLogging.Debug(MODULE_NAME, "mib.serial = 0x{0:X8}", mib.serial);
AaruLogging.Debug(MODULE_NAME,
"mib.creationTimestamp = {0}",
DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime));
AaruLogging.Debug(MODULE_NAME, "mib.codepageType = {0}", mib.codepageType);
AaruLogging.Debug(MODULE_NAME, "mib.codepage = {0}", mib.codepage);
AaruLogging.Debug(MODULE_NAME, "mib.rps = {0}", mib.rps);
AaruLogging.Debug(MODULE_NAME, "mib.bps = {0}", mib.bps);
AaruLogging.Debug(MODULE_NAME, "mib.bpc = {0}", mib.bpc);
AaruLogging.Debug(MODULE_NAME, "mib.unknown2 = {0}", mib.unknown2);
AaruLogging.Debug(MODULE_NAME, "mib.sectors = {0}", mib.sectors);
AaruLogging.Debug(MODULE_NAME, "mib.unknown3 = {0}", mib.unknown3);
AaruLogging.Debug(MODULE_NAME, "mib.unknown4 = {0}", mib.unknown4);
AaruLogging.Debug(MODULE_NAME, "mib.major = {0}", mib.major);
AaruLogging.Debug(MODULE_NAME, "mib.minor = {0}", mib.minor);
AaruLogging.Debug(MODULE_NAME, "mib.unknown5 = {0}", mib.unknown5);
AaruLogging.Debug(MODULE_NAME, "mib.unknown6 = {0}", mib.unknown6);
AaruLogging.Debug(MODULE_NAME,
"mib.filler is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(mib.filler));
AaruLogging.Debug(MODULE_NAME, "vib.blockId = \"{0}\"", StringHandlers.CToString(vib.blockId));
AaruLogging.Debug(MODULE_NAME, "vib.unknown = {0}", vib.unknown);
AaruLogging.Debug(MODULE_NAME, "vib.unknown2 = {0}", vib.unknown2);
AaruLogging.Debug(MODULE_NAME,
"vib.unknown3 is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(vib.unknown3));
AaruLogging.Debug(MODULE_NAME,
"vib.unknown4 = \"{0}\"",
StringHandlers.SpacePaddedToString(vib.unknown4));
AaruLogging.Debug(MODULE_NAME, "vib.owner = \"{0}\"", StringHandlers.SpacePaddedToString(vib.owner));
AaruLogging.Debug(MODULE_NAME,
"vib.unknown5 = \"{0}\"",
StringHandlers.SpacePaddedToString(vib.unknown5));
AaruLogging.Debug(MODULE_NAME, "vib.unknown6 = {0}", vib.unknown6);
AaruLogging.Debug(MODULE_NAME, "vib.percentFull = {0}", vib.percentFull);
AaruLogging.Debug(MODULE_NAME, "vib.unknown7 = {0}", vib.unknown7);
AaruLogging.Debug(MODULE_NAME,
"vib.filler is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(vib.filler));
sb.AppendLine(Localization.HPOFS_Name);
sb.AppendFormat(Localization.OEM_name_0, StringHandlers.SpacePaddedToString(bpb.oem_name)).AppendLine();
sb.AppendFormat(Localization._0_bytes_per_sector, bpb.bps).AppendLine();
sb.AppendFormat(Localization._0_sectors_per_cluster, bpb.spc).AppendLine();
sb.AppendFormat(Localization.Media_descriptor_0, bpb.media).AppendLine();
sb.AppendFormat(Localization._0_sectors_per_track, bpb.sptrk).AppendLine();
sb.AppendFormat(Localization._0_heads, bpb.heads).AppendLine();
sb.AppendFormat(Localization._0_sectors_hidden_before_BPB, bpb.hsectors).AppendLine();
sb.AppendFormat(Localization._0_sectors_on_volume_1_bytes, mib.sectors, mib.sectors * bpb.bps).AppendLine();
sb.AppendFormat(Localization.BIOS_drive_number_0, bpb.drive_no).AppendLine();
sb.AppendFormat(Localization.Serial_number_0, mib.serial).AppendLine();
sb.AppendFormat(Localization.Volume_label_0, StringHandlers.SpacePaddedToString(mib.volumeLabel, encoding))
.AppendLine();
sb.AppendFormat(Localization.Volume_comment_0, StringHandlers.SpacePaddedToString(mib.comment, encoding))
.AppendLine();
sb.AppendFormat(Localization.Volume_owner_0, StringHandlers.SpacePaddedToString(vib.owner, encoding))
.AppendLine();
sb.AppendFormat(Localization.Volume_created_on_0,
DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime))
.AppendLine();
sb.AppendFormat(Localization.Volume_uses_0_codepage_1,
mib.codepageType is > 0 and < 3
? mib.codepageType == 2 ? Localization.EBCDIC : Localization.ASCII
: Localization.Unknown_codepage,
mib.codepage)
.AppendLine();
sb.AppendFormat(Localization.RPS_level_0, mib.rps).AppendLine();
sb.AppendFormat(Localization.Filesystem_version_0_1, mib.major, mib.minor).AppendLine();
sb.AppendFormat(Localization.Volume_can_be_filled_up_to_0, vib.percentFull).AppendLine();
metadata = new FileSystem
{
Clusters = mib.sectors / bpb.spc,
ClusterSize = (uint)(bpb.bps * bpb.spc),
CreationDate = DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime),
DataPreparerIdentifier = StringHandlers.SpacePaddedToString(vib.owner, encoding),
Type = FS_TYPE,
VolumeName = StringHandlers.SpacePaddedToString(mib.volumeLabel, encoding),
VolumeSerial = $"{mib.serial:X8}",
SystemIdentifier = StringHandlers.SpacePaddedToString(bpb.oem_name)
};
information = sb.ToString();
}
#endregion
}
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