// /*************************************************************************** // The Disc Image Chef // ---------------------------------------------------------------------------- // // Filename : Structs.cs // Author(s) : Natalia Portillo // // Component : Component // // --[ Description ] ---------------------------------------------------------- // // Description // // --[ 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 © 2011-2017 Natalia Portillo // ****************************************************************************/ using System; using System.Runtime.InteropServices; using System.Text; namespace DiscImageChef.Filesystems.ISO9660 { public partial class ISO9660 : Filesystem { [StructLayout(LayoutKind.Sequential, Pack = 1)] struct PrimaryVolumeDescriptor { public byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] id; public byte version; // Only used in SVDs public byte flags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] volume_id; public ulong reserved1; public uint volume_space_size; public uint volume_space_size_be; // Only used in SVDs [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] escape_sequences; public ushort volume_set_size; public ushort volume_set_size_be; public ushort volume_sequence_number; public ushort volume_sequence_number_be; public ushort logical_block_size; public ushort logical_block_size_be; public uint path_table_size; public uint path_table_size_be; public uint type_1_path_table; public uint opt_type_1_path_table; public uint type_m_path_table; public uint opt_type_m_path_table; public DirectoryRecord root_directory_record; public byte root_directory_name; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] volume_set_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] publisher_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] preparer_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] application_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 37)] public byte[] copyright_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 37)] public byte[] abstract_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 37)] public byte[] bibliographic_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] creation_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] modification_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] expiration_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] effective_date; public byte file_structure_version; public byte reserved2; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)] public byte[] application_data; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 653)] public byte[] reserved3; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct HighSierraPrimaryVolumeDescriptor { public uint volume_lbn; public uint volume_lbn_be; public byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] id; public byte version; // Only used in SVDs public byte flags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] volume_id; public ulong reserved1; public uint volume_space_size; public uint volume_space_size_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] escape_sequences; public ushort volume_set_size; public ushort volume_set_size_be; public ushort volume_sequence_number; public ushort volume_sequence_number_be; public ushort logical_block_size; public ushort logical_block_size_be; public uint path_table_size; public uint path_table_size_be; public uint manditory_path_table_lsb; public uint opt_path_table_lsb_1; public uint opt_path_table_lsb_2; public uint opt_path_table_lsb_3; public uint manditory_path_table_msb; public uint opt_path_table_msb_1; public uint opt_path_table_msb_2; public uint opt_path_table_msb_3; public HighSierraDirectoryRecord root_directory_record; public byte root_directory_name; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] volume_set_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] publisher_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] preparer_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] application_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] copyright_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] abstract_file_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] creation_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] modification_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] expiration_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] effective_date; public byte file_structure_version; public byte reserved2; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)] public byte[] application_data; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 680)] public byte[] reserved3; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct BootRecord { public byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] id; public byte version; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] boot_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1977)] public byte[] boot_use; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoBootRecord { public byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] id; public byte version; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] boot_id; public uint catalog_sector; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1974)] public byte[] boot_use; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct PartitionDescriptor { public byte type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] id; public byte version; public byte reserved1; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] partition_id; public uint partition_location; public uint partition_location_be; public uint partition_size; public uint partition_size_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1960)] public byte[] system_use; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct DirectoryRecord { public byte length; public byte xattr_len; public uint extent; public uint extent_be; public uint size; public uint size_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 7)] public byte[] date; public FileFlags flags; public byte file_unit_size; public byte interleave; public ushort volume_sequence_number; public ushort volume_sequence_number_be; public byte name_len; // Followed by name[name_len] and then system area until length arrives } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct HighSierraDirectoryRecord { public byte length; public byte xattr_len; public uint extent; public uint extent_be; public uint size; public uint size_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)] public byte[] date; public FileFlags flags; public byte reserved; public byte interleave_size; public byte interleave; public ushort volume_sequence_number; public ushort volume_sequence_number_be; public byte name_len; // Followed by name[name_len] and then system area until length arrives } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ExtendedAttributeRecord { public ushort owner; public ushort owner_be; public ushort group; public ushort group_be; public Permissions permissions; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] creation_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] modification_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] expiration_date; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)] public byte[] effective_date; public RecordFormat record_format; public RecordAttribute record_attributes; public ushort record_length; public ushort record_length_be; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_id; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] system_use; public byte record_version; public byte escape_len; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] reserved1; public ushort app_use_len; public ushort app_use_len_be; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoValidationEntry { public ElToritoIndicator header_id; public ElToritoPlatform platform_id; public ushort reserved; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)] public byte[] developer_id; public ushort checksum; public ushort signature; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoInitialEntry { public ElToritoIndicator bootable; public ElToritoEmulation boot_type; public ushort load_seg; public byte system_type; public byte reserved1; public ushort sector_count; public uint load_rba; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)] public byte[] reserved2; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoSectionHeaderEntry { public ElToritoIndicator header_id; public ElToritoPlatform platform_id; public ushort entries; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 28)] public byte[] identifier; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoSectionEntry { public ElToritoIndicator bootable; public ElToritoEmulation boot_type; public ushort load_seg; public byte system_type; public byte reserved1; public ushort sector_count; public uint load_rba; public byte selection_criteria_type; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 19)] public byte[] selection_criterias; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ElToritoSectionEntryExtension { public ElToritoIndicator extension_indicator; public ElToritoFlags extension_flags; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 30)] public byte[] selection_criterias; } // Big-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct CdromXa { public ushort group; public ushort user; public XaAttributes attributes; public ushort signature; public byte filenumber; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] reserved; } // Little-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleProDOSSystemUse { public ushort signature; public byte length; public AppleId id; public byte type; public ushort aux_type; } // Big-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleHFSSystemUse { public ushort signature; public byte length; public AppleId id; public ushort type; public ushort creator; public ushort finder_flags; } // Little-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleProDOSOldSystemUse { public ushort signature; public AppleOldId id; public byte type; public ushort aux_type; } // Big-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleHFSTypeCreatorSystemUse { public ushort signature; public AppleOldId id; public ushort type; public ushort creator; } // Big-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleHFSIconSystemUse { public ushort signature; public AppleOldId id; public ushort type; public ushort creator; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public byte[] icon; } // Big-endian [StructLayout(LayoutKind.Sequential, Pack = 1)] struct AppleHFSOldSystemUse { public ushort signature; public AppleOldId id; public ushort type; public ushort creator; public ushort finder_flags; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ContinuationArea { public ushort signature; public byte length; public byte version; public uint block; public uint block_be; public uint offset; public uint offset_be; public uint ca_length; public uint ca_length_be; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct PaddingArea { public ushort signature; public byte length; public byte version; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct IndicatorArea { public ushort signature; public byte length; public byte version; public ushort magic; public byte skipped; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct TerminatorArea { public ushort signature; public byte length; public byte version; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct ReferenceArea { public ushort signature; public byte length; public byte version; public byte id_len; public byte des_len; public byte src_len; public byte ext_ver; // Follows extension identifier for id_len bytes // Follows extension descriptor for des_len bytes // Follows extension source for src_len bytes } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct SelectorArea { public ushort signature; public byte length; public byte version; public byte sequence; } struct DecodedVolumeDescriptor { public string SystemIdentifier; public string VolumeIdentifier; public string VolumeSetIdentifier; public string PublisherIdentifier; public string DataPreparerIdentifier; public string ApplicationIdentifier; public DateTime CreationTime; public bool HasModificationTime; public DateTime ModificationTime; public bool HasExpirationTime; public DateTime ExpirationTime; public bool HasEffectiveTime; public DateTime EffectiveTime; public ushort BlockSize; public uint Blocks; } static DecodedVolumeDescriptor DecodeJolietDescriptor(PrimaryVolumeDescriptor jolietvd) { DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor(); decodedVD.SystemIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.system_id).TrimEnd().Trim(new[] { '\u0000' }); decodedVD.VolumeIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.volume_id).TrimEnd().Trim(new[] { '\u0000' }); decodedVD.VolumeSetIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.volume_set_id).TrimEnd().Trim(new[] { '\u0000' }); decodedVD.PublisherIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.publisher_id).TrimEnd().Trim(new[] { '\u0000' }); decodedVD.DataPreparerIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.preparer_id).TrimEnd().Trim(new[] { '\u0000' }); decodedVD.ApplicationIdentifier = Encoding.BigEndianUnicode.GetString(jolietvd.application_id).TrimEnd().Trim(new[] { '\u0000' }); if(jolietvd.creation_date[0] < 0x31 || jolietvd.creation_date[0] > 0x39) decodedVD.CreationTime = DateTime.MinValue; else decodedVD.CreationTime = DateHandlers.ISO9660ToDateTime(jolietvd.creation_date); if(jolietvd.modification_date[0] < 0x31 || jolietvd.modification_date[0] > 0x39) { decodedVD.HasModificationTime = false; } else { decodedVD.HasModificationTime = true; decodedVD.ModificationTime = DateHandlers.ISO9660ToDateTime(jolietvd.modification_date); } if(jolietvd.expiration_date[0] < 0x31 || jolietvd.expiration_date[0] > 0x39) { decodedVD.HasExpirationTime = false; } else { decodedVD.HasExpirationTime = true; decodedVD.ExpirationTime = DateHandlers.ISO9660ToDateTime(jolietvd.expiration_date); } if(jolietvd.effective_date[0] < 0x31 || jolietvd.effective_date[0] > 0x39) { decodedVD.HasEffectiveTime = false; } else { decodedVD.HasEffectiveTime = true; decodedVD.EffectiveTime = DateHandlers.ISO9660ToDateTime(jolietvd.effective_date); } decodedVD.Blocks = jolietvd.volume_space_size; decodedVD.BlockSize = jolietvd.logical_block_size; return decodedVD; } static DecodedVolumeDescriptor DecodeVolumeDescriptor(PrimaryVolumeDescriptor pvd) { DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor(); decodedVD.SystemIdentifier = Encoding.ASCII.GetString(pvd.system_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.VolumeIdentifier = Encoding.ASCII.GetString(pvd.volume_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.VolumeSetIdentifier = Encoding.ASCII.GetString(pvd.volume_set_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.PublisherIdentifier = Encoding.ASCII.GetString(pvd.publisher_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.DataPreparerIdentifier = Encoding.ASCII.GetString(pvd.preparer_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.ApplicationIdentifier = Encoding.ASCII.GetString(pvd.application_data).TrimEnd().Trim(new[] { '\0' }); if(pvd.creation_date[0] == '0' || pvd.creation_date[0] == 0x00) decodedVD.CreationTime = DateTime.MinValue; else decodedVD.CreationTime = DateHandlers.ISO9660ToDateTime(pvd.creation_date); if(pvd.modification_date[0] == '0' || pvd.modification_date[0] == 0x00) { decodedVD.HasModificationTime = false; } else { decodedVD.HasModificationTime = true; decodedVD.ModificationTime = DateHandlers.ISO9660ToDateTime(pvd.modification_date); } if(pvd.expiration_date[0] == '0' || pvd.expiration_date[0] == 0x00) { decodedVD.HasExpirationTime = false; } else { decodedVD.HasExpirationTime = true; decodedVD.ExpirationTime = DateHandlers.ISO9660ToDateTime(pvd.expiration_date); } if(pvd.effective_date[0] == '0' || pvd.effective_date[0] == 0x00) { decodedVD.HasEffectiveTime = false; } else { decodedVD.HasEffectiveTime = true; decodedVD.EffectiveTime = DateHandlers.ISO9660ToDateTime(pvd.effective_date); } decodedVD.Blocks = pvd.volume_space_size; decodedVD.BlockSize = pvd.logical_block_size; return decodedVD; } static DecodedVolumeDescriptor DecodeVolumeDescriptor(HighSierraPrimaryVolumeDescriptor pvd) { DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor(); decodedVD.SystemIdentifier = Encoding.ASCII.GetString(pvd.system_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.VolumeIdentifier = Encoding.ASCII.GetString(pvd.volume_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.VolumeSetIdentifier = Encoding.ASCII.GetString(pvd.volume_set_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.PublisherIdentifier = Encoding.ASCII.GetString(pvd.publisher_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.DataPreparerIdentifier = Encoding.ASCII.GetString(pvd.preparer_id).TrimEnd().Trim(new[] { '\0' }); decodedVD.ApplicationIdentifier = Encoding.ASCII.GetString(pvd.application_data).TrimEnd().Trim(new[] { '\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; } } }