mirror of
https://github.com/aaru-dps/Aaru.git
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Natalia Portillo
4ef3252b24
Introduces constant fields for respective debug module names, replacing the hardcoded ones. This is done to standardize the naming convention, reduce redundancy and potentially avoid any typos or name mismatches across the project. This change makes the code more maintainable and easier to update in case module names need to be changed.
257 lines
9.5 KiB
C#
257 lines
9.5 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Info.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : dump(8) file system plugin
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies backups created with dump(8) shows 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 © 2011-2023 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Text;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Console;
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using Aaru.Helpers;
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using Partition = Aaru.CommonTypes.Partition;
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using ufs_daddr_t = System.Int32;
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namespace Aaru.Filesystems;
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/// <inheritdoc />
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/// <summary>Implements identification of a dump(8) image (virtual filesystem on a file)</summary>
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[SuppressMessage("ReSharper", "InconsistentNaming"), SuppressMessage("ReSharper", "UnusedMember.Local")]
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public sealed partial class dump
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{
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/// <inheritdoc />
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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if(imagePlugin.Info.SectorSize < 512)
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return false;
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// It should be start of a tape or floppy or file
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if(partition.Start != 0)
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return false;
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uint sbSize = (uint)(Marshal.SizeOf<s_spcl>() / imagePlugin.Info.SectorSize);
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if(Marshal.SizeOf<s_spcl>() % imagePlugin.Info.SectorSize != 0)
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sbSize++;
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ErrorNumber errno = imagePlugin.ReadSectors(partition.Start, sbSize, out byte[] sector);
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if(errno != ErrorNumber.NoError)
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return false;
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if(sector.Length < Marshal.SizeOf<s_spcl>())
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return false;
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spcl16 oldHdr = Marshal.ByteArrayToStructureLittleEndian<spcl16>(sector);
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spcl_aix aixHdr = Marshal.ByteArrayToStructureLittleEndian<spcl_aix>(sector);
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s_spcl newHdr = Marshal.ByteArrayToStructureLittleEndian<s_spcl>(sector);
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AaruConsole.DebugWriteLine(MODULE_NAME, "old magic = 0x{0:X8}", oldHdr.c_magic);
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AaruConsole.DebugWriteLine(MODULE_NAME, "aix magic = 0x{0:X8}", aixHdr.c_magic);
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AaruConsole.DebugWriteLine(MODULE_NAME, "new magic = 0x{0:X8}", newHdr.c_magic);
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return oldHdr.c_magic == OFS_MAGIC || aixHdr.c_magic is XIX_MAGIC or XIX_CIGAM || newHdr.c_magic == OFS_MAGIC ||
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newHdr.c_magic == NFS_MAGIC || newHdr.c_magic == OFS_CIGAM || newHdr.c_magic == NFS_CIGAM ||
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newHdr.c_magic == UFS2_MAGIC || newHdr.c_magic == UFS2_CIGAM;
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}
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/// <inheritdoc />
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public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
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out FileSystem metadata)
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{
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information = "";
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metadata = new FileSystem();
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if(imagePlugin.Info.SectorSize < 512)
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return;
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if(partition.Start != 0)
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return;
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uint sbSize = (uint)(Marshal.SizeOf<s_spcl>() / imagePlugin.Info.SectorSize);
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if(Marshal.SizeOf<s_spcl>() % imagePlugin.Info.SectorSize != 0)
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sbSize++;
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ErrorNumber errno = imagePlugin.ReadSectors(partition.Start, sbSize, out byte[] sector);
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if(errno != ErrorNumber.NoError)
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return;
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if(sector.Length < Marshal.SizeOf<s_spcl>())
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return;
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spcl16 oldHdr = Marshal.ByteArrayToStructureLittleEndian<spcl16>(sector);
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spcl_aix aixHdr = Marshal.ByteArrayToStructureLittleEndian<spcl_aix>(sector);
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s_spcl newHdr = Marshal.ByteArrayToStructureLittleEndian<s_spcl>(sector);
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bool useOld = false;
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bool useAix = false;
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if(newHdr.c_magic == OFS_MAGIC ||
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newHdr.c_magic == NFS_MAGIC ||
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newHdr.c_magic == OFS_CIGAM ||
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newHdr.c_magic == NFS_CIGAM ||
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newHdr.c_magic == UFS2_MAGIC ||
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newHdr.c_magic == UFS2_CIGAM)
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{
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if(newHdr.c_magic == OFS_CIGAM ||
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newHdr.c_magic == NFS_CIGAM ||
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newHdr.c_magic == UFS2_CIGAM)
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newHdr = Marshal.ByteArrayToStructureBigEndian<s_spcl>(sector);
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}
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else if(aixHdr.c_magic is XIX_MAGIC or XIX_CIGAM)
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{
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useAix = true;
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if(aixHdr.c_magic == XIX_CIGAM)
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aixHdr = Marshal.ByteArrayToStructureBigEndian<spcl_aix>(sector);
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}
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else if(oldHdr.c_magic == OFS_MAGIC)
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{
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useOld = true;
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// Swap PDP-11 endian
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oldHdr.c_date = (int)Swapping.PDPFromLittleEndian((uint)oldHdr.c_date);
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oldHdr.c_ddate = (int)Swapping.PDPFromLittleEndian((uint)oldHdr.c_ddate);
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}
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else
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{
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information = Localization.Could_not_read_dump_8_header_block;
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return;
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}
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var sb = new StringBuilder();
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metadata = new FileSystem
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{
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ClusterSize = 1024,
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Clusters = partition.Size / 1024
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};
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if(useOld)
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{
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metadata.Type = Localization.Old_16_bit_dump_8;
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sb.AppendLine(metadata.Type);
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if(oldHdr.c_date > 0)
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{
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metadata.CreationDate = DateHandlers.UnixToDateTime(oldHdr.c_date);
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sb.AppendFormat(Localization.Dump_created_on_0, metadata.CreationDate).AppendLine();
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}
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if(oldHdr.c_ddate > 0)
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{
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metadata.BackupDate = DateHandlers.UnixToDateTime(oldHdr.c_ddate);
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sb.AppendFormat(Localization.Previous_dump_created_on_0, metadata.BackupDate).AppendLine();
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}
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sb.AppendFormat(Localization.Dump_volume_number_0, oldHdr.c_volume).AppendLine();
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}
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else if(useAix)
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{
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metadata.Type = FS_TYPE;
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sb.AppendLine(metadata.Type);
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if(aixHdr.c_date > 0)
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{
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metadata.CreationDate = DateHandlers.UnixToDateTime(aixHdr.c_date);
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sb.AppendFormat(Localization.Dump_created_on_0, metadata.CreationDate).AppendLine();
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}
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if(aixHdr.c_ddate > 0)
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{
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metadata.BackupDate = DateHandlers.UnixToDateTime(aixHdr.c_ddate);
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sb.AppendFormat(Localization.Previous_dump_created_on_0, metadata.BackupDate).AppendLine();
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}
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sb.AppendFormat(Localization.Dump_volume_number_0, aixHdr.c_volume).AppendLine();
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}
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else
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{
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metadata.Type = FS_TYPE;
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sb.AppendLine(metadata.Type);
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if(newHdr.c_ndate > 0)
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{
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metadata.CreationDate = DateHandlers.UnixToDateTime(newHdr.c_ndate);
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sb.AppendFormat(Localization.Dump_created_on_0, metadata.CreationDate).AppendLine();
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}
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else if(newHdr.c_date > 0)
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{
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metadata.CreationDate = DateHandlers.UnixToDateTime(newHdr.c_date);
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sb.AppendFormat(Localization.Dump_created_on_0, metadata.CreationDate).AppendLine();
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}
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if(newHdr.c_nddate > 0)
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{
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metadata.BackupDate = DateHandlers.UnixToDateTime(newHdr.c_nddate);
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sb.AppendFormat(Localization.Previous_dump_created_on_0, metadata.BackupDate).AppendLine();
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}
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else if(newHdr.c_ddate > 0)
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{
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metadata.BackupDate = DateHandlers.UnixToDateTime(newHdr.c_ddate);
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sb.AppendFormat(Localization.Previous_dump_created_on_0, metadata.BackupDate).AppendLine();
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}
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sb.AppendFormat(Localization.Dump_volume_number_0, newHdr.c_volume).AppendLine();
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sb.AppendFormat(Localization.Dump_level_0, newHdr.c_level).AppendLine();
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string dumpname = StringHandlers.CToString(newHdr.c_label);
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if(!string.IsNullOrEmpty(dumpname))
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{
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metadata.VolumeName = dumpname;
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sb.AppendFormat(Localization.Dump_label_0, dumpname).AppendLine();
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}
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string str = StringHandlers.CToString(newHdr.c_filesys);
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if(!string.IsNullOrEmpty(str))
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sb.AppendFormat(Localization.Dumped_filesystem_name_0, str).AppendLine();
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str = StringHandlers.CToString(newHdr.c_dev);
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if(!string.IsNullOrEmpty(str))
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sb.AppendFormat(Localization.Dumped_device_0, str).AppendLine();
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str = StringHandlers.CToString(newHdr.c_host);
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if(!string.IsNullOrEmpty(str))
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sb.AppendFormat(Localization.Dump_hostname_0, str).AppendLine();
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}
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information = sb.ToString();
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}
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} |