// /*************************************************************************** // Aaru Data Preservation Suite // ---------------------------------------------------------------------------- // // Filename : HighSierra.cs // Author(s) : Natalia Portillo // // Component : ISO9660 filesystem plugin. // // --[ Description ] ---------------------------------------------------------- // // High Sierra Format structures. // // --[ 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 . // // ---------------------------------------------------------------------------- // Copyright © 2011-2022 Natalia Portillo // In the loving memory of Facunda "Tata" Suárez Domínguez, R.I.P. 2019/07/24 // ****************************************************************************/ using System; using System.Runtime.InteropServices; using System.Text; using Aaru.Helpers; namespace Aaru.Filesystems; public sealed partial class ISO9660 { static DecodedVolumeDescriptor DecodeVolumeDescriptor(HighSierraPrimaryVolumeDescriptor pvd) { var decodedVd = new DecodedVolumeDescriptor { SystemIdentifier = Encoding.ASCII.GetString(pvd.system_id).TrimEnd().Trim('\0'), VolumeIdentifier = Encoding.ASCII.GetString(pvd.volume_id).TrimEnd().Trim('\0'), VolumeSetIdentifier = Encoding.ASCII.GetString(pvd.volume_set_id).TrimEnd().Trim('\0'), PublisherIdentifier = Encoding.ASCII.GetString(pvd.publisher_id).TrimEnd().Trim('\0'), DataPreparerIdentifier = Encoding.ASCII.GetString(pvd.preparer_id).TrimEnd().Trim('\0'), ApplicationIdentifier = Encoding.ASCII.GetString(pvd.application_data).TrimEnd().Trim('\0') }; if(pvd.creation_date[0] == '0' || pvd.creation_date[0] == 0x00) decodedVd.CreationTime = DateTime.MinValue; else decodedVd.CreationTime = DateHandlers.HighSierraToDateTime(pvd.creation_date); if(pvd.modification_date[0] == '0' || pvd.modification_date[0] == 0x00) decodedVd.HasModificationTime = false; else { decodedVd.HasModificationTime = true; decodedVd.ModificationTime = DateHandlers.HighSierraToDateTime(pvd.modification_date); } if(pvd.expiration_date[0] == '0' || pvd.expiration_date[0] == 0x00) decodedVd.HasExpirationTime = false; else { decodedVd.HasExpirationTime = true; decodedVd.ExpirationTime = DateHandlers.HighSierraToDateTime(pvd.expiration_date); } if(pvd.effective_date[0] == '0' || pvd.effective_date[0] == 0x00) decodedVd.HasEffectiveTime = false; else { decodedVd.HasEffectiveTime = true; decodedVd.EffectiveTime = DateHandlers.HighSierraToDateTime(pvd.effective_date); } decodedVd.Blocks = pvd.volume_space_size; decodedVd.BlockSize = pvd.logical_block_size; return decodedVd; } [StructLayout(LayoutKind.Sequential, Pack = 1)] readonly struct HighSierraPrimaryVolumeDescriptor { public readonly uint volume_lbn; public readonly uint volume_lbn_be; public readonly byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public readonly byte[] id; public readonly byte version; // Only used in SVDs public readonly byte flags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] volume_id; public readonly ulong reserved1; public readonly uint volume_space_size; public readonly uint volume_space_size_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] escape_sequences; public readonly ushort volume_set_size; public readonly ushort volume_set_size_be; public readonly ushort volume_sequence_number; public readonly ushort volume_sequence_number_be; public readonly ushort logical_block_size; public readonly ushort logical_block_size_be; public readonly uint path_table_size; public readonly uint path_table_size_be; public readonly uint mandatory_path_table_lsb; public readonly uint opt_path_table_lsb_1; public readonly uint opt_path_table_lsb_2; public readonly uint opt_path_table_lsb_3; public readonly uint mandatory_path_table_msb; public readonly uint opt_path_table_msb_1; public readonly uint opt_path_table_msb_2; public readonly uint opt_path_table_msb_3; public readonly HighSierraDirectoryRecord root_directory_record; public readonly byte root_directory_name; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public readonly byte[] volume_set_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public readonly byte[] publisher_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public readonly byte[] preparer_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public readonly byte[] application_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] copyright_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] abstract_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] creation_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] modification_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] expiration_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] effective_date; public readonly byte file_structure_version; public readonly byte reserved2; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)] public readonly byte[] application_data; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 680)] public readonly byte[] reserved3; } [StructLayout(LayoutKind.Sequential, Pack = 1)] readonly struct HighSierraDirectoryRecord { public readonly byte length; public readonly byte xattr_len; public readonly uint extent; public readonly uint extent_be; public readonly uint size; public readonly uint size_be; public readonly HighSierraTimestamp date; public readonly FileFlags flags; public readonly byte reserved; public readonly byte interleave_size; public readonly byte interleave; public readonly ushort volume_sequence_number; public readonly ushort volume_sequence_number_be; public readonly byte name_len; // Followed by name[name_len] and then system area until length arrives } [StructLayout(LayoutKind.Sequential, Pack = 1)] readonly struct HighSierraTimestamp { public readonly byte Years; public readonly byte Month; public readonly byte Day; public readonly byte Hour; public readonly byte Minute; public readonly byte Second; } // There are two tables one in little endian one in big endian [StructLayout(LayoutKind.Sequential, Pack = 1)] readonly struct HighSierraPathTableEntry { public readonly uint start_lbn; public readonly byte xattr_len; public readonly byte name_len; public readonly ushort parent_dirno; // Followed by name[name_len] } }