// /*************************************************************************** // The Disc Image Chef // ---------------------------------------------------------------------------- // // Filename : CDi.cs // Author(s) : Natalia Portillo // // Component : ISO9660 filesystem plugin. // // --[ Description ] ---------------------------------------------------------- // // CDi extensions 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 © 2011-2019 Natalia Portillo // ****************************************************************************/ using System; using System.Runtime.InteropServices; namespace DiscImageChef.Filesystems.ISO9660 { public partial class ISO9660 { static DecodedVolumeDescriptor DecodeVolumeDescriptor(FileStructureVolumeDescriptor pvd) { DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor { SystemIdentifier = StringHandlers.CToString(pvd.system_id).TrimEnd(), VolumeIdentifier = StringHandlers.CToString(pvd.volume_id).TrimEnd(), VolumeSetIdentifier = StringHandlers.CToString(pvd.volume_set_id).TrimEnd(), PublisherIdentifier = StringHandlers.CToString(pvd.publisher_id).TrimEnd(), DataPreparerIdentifier = StringHandlers.CToString(pvd.preparer_id).TrimEnd(), ApplicationIdentifier = StringHandlers.CToString(pvd.application_data).TrimEnd() }; 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)] struct FileStructureVolumeDescriptor { public readonly byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public readonly byte[] id; public readonly byte version; public readonly CdiVolumeFlags flags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] volume_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 12)] public readonly byte[] reserved1; public readonly uint volume_space_size; // Only used in SVDs [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] escape_sequences; public readonly ushort reserved2; public readonly ushort volume_set_size; public readonly ushort reserved3; public readonly ushort volume_sequence_number; public readonly ushort reserved4; public readonly ushort logical_block_size; public readonly uint reserved5; public readonly uint path_table_size; public readonly ulong reserved6; public readonly uint path_table_addr; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 38)] public readonly byte[] reserved7; [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 = 5)] public readonly byte[] reserved8; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] abstract_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public readonly byte[] reserved9; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public readonly byte[] bibliographic_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public readonly byte[] reserved10; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] creation_date; public readonly byte reserved11; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] modification_date; public readonly byte reserved12; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] expiration_date; public readonly byte reserved13; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public readonly byte[] effective_date; public readonly byte reserved14; public readonly byte file_structure_version; public readonly byte reserved15; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)] public readonly byte[] application_data; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 653)] public readonly byte[] reserved16; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct CdiDirectoryRecord { public readonly byte length; public readonly byte xattr_len; public readonly uint reserved1; public readonly uint start_lbn; public readonly uint reserved2; public readonly uint size; public readonly HighSierraTimestamp date; public readonly byte reserved3; public readonly CdiFileFlags flags; public readonly ushort file_unit_size; public readonly ushort reserved4; public readonly ushort volume_sequence_number; public readonly byte name_len; // Followed by name[name_len] and then CdiSystemArea until length arrives } // Follows filename on directory record [StructLayout(LayoutKind.Sequential, Pack = 1)] struct CdiSystemArea { public readonly ushort group; public readonly ushort owner; public readonly CdiAttributes attributes; public readonly ushort reserved1; public readonly byte file_no; public readonly byte reserved2; } } }