// /*************************************************************************** // Aaru Data Preservation Suite // ---------------------------------------------------------------------------- // // Filename : Info.cs // Author(s) : Natalia Portillo // // Component : OS/2 High Performance File System plugin. // // --[ Description ] ---------------------------------------------------------- // // Identifies the OS/2 High Performance 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 . // // ---------------------------------------------------------------------------- // Copyright © 2011-2023 Natalia Portillo // ****************************************************************************/ using System; using System.Text; using Aaru.Checksums; using Aaru.CommonTypes; using Aaru.CommonTypes.Enums; using Aaru.CommonTypes.Interfaces; using Aaru.Helpers; using Schemas; namespace Aaru.Filesystems; // Information from an old unnamed document /// /// Implements detection of IBM's High Performance File System (HPFS) public sealed partial class HPFS { /// public bool Identify(IMediaImage imagePlugin, Partition partition) { if(16 + partition.Start >= partition.End) return false; ErrorNumber errno = imagePlugin.ReadSector(16 + partition.Start, out byte[] hpfsSbSector); // Seek to superblock, on logical sector 16 if(errno != ErrorNumber.NoError) return false; uint magic1 = BitConverter.ToUInt32(hpfsSbSector, 0x000); uint magic2 = BitConverter.ToUInt32(hpfsSbSector, 0x004); return magic1 == 0xF995E849 && magic2 == 0xFA53E9C5; } /// public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information, Encoding encoding) { Encoding = encoding ?? Encoding.GetEncoding("ibm850"); information = ""; var sb = new StringBuilder(); ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, out byte[] hpfsBpbSector); // Seek to BIOS parameter block, on logical sector 0 if(errno != ErrorNumber.NoError) return; errno = imagePlugin.ReadSector(16 + partition.Start, out byte[] hpfsSbSector); // Seek to superblock, on logical sector 16 if(errno != ErrorNumber.NoError) return; errno = imagePlugin.ReadSector(17 + partition.Start, out byte[] hpfsSpSector); // Seek to spareblock, on logical sector 17 if(errno != ErrorNumber.NoError) return; BiosParameterBlock bpb = Marshal.ByteArrayToStructureLittleEndian(hpfsBpbSector); SuperBlock hpfsSb = Marshal.ByteArrayToStructureLittleEndian(hpfsSbSector); SpareBlock sp = Marshal.ByteArrayToStructureLittleEndian(hpfsSpSector); if(StringHandlers.CToString(bpb.fs_type) != "HPFS " || hpfsSb.magic1 != 0xF995E849 || hpfsSb.magic2 != 0xFA53E9C5 || sp.magic1 != 0xF9911849 || sp.magic2 != 0xFA5229C5) { sb.AppendLine(Localization.This_may_not_be_HPFS_following_information_may_be_not_correct); sb.AppendFormat(Localization.File_system_type_0_Should_be_HPFS, bpb.fs_type).AppendLine(); sb.AppendFormat(Localization.Superblock_magic1_0_Should_be_0xF995E849, hpfsSb.magic1).AppendLine(); sb.AppendFormat(Localization.Superblock_magic2_0_Should_be_0xFA53E9C5, hpfsSb.magic2).AppendLine(); sb.AppendFormat(Localization.Spareblock_magic1_0_Should_be_0xF9911849, sp.magic1).AppendLine(); sb.AppendFormat(Localization.Spareblock_magic2_0_Should_be_0xFA5229C5, sp.magic2).AppendLine(); } sb.AppendFormat(Localization.OEM_name_0, StringHandlers.CToString(bpb.oem_name)).AppendLine(); sb.AppendFormat(Localization._0_bytes_per_sector, bpb.bps).AppendLine(); // sb.AppendFormat("{0} sectors per cluster", hpfs_bpb.spc).AppendLine(); // sb.AppendFormat("{0} reserved sectors", hpfs_bpb.rsectors).AppendLine(); // sb.AppendFormat("{0} FATs", hpfs_bpb.fats_no).AppendLine(); // sb.AppendFormat("{0} entries on root directory", hpfs_bpb.root_ent).AppendLine(); // sb.AppendFormat("{0} mini sectors on volume", hpfs_bpb.sectors).AppendLine(); sb.AppendFormat(Localization.Media_descriptor_0, bpb.media).AppendLine(); // sb.AppendFormat("{0} sectors per FAT", hpfs_bpb.spfat).AppendLine(); // sb.AppendFormat("{0} sectors per track", hpfs_bpb.sptrk).AppendLine(); // sb.AppendFormat("{0} heads", hpfs_bpb.heads).AppendLine(); sb.AppendFormat(Localization._0_sectors_hidden_before_BPB, bpb.hsectors).AppendLine(); sb.AppendFormat(Localization._0_sectors_on_volume_1_bytes, hpfsSb.sectors, hpfsSb.sectors * bpb.bps). AppendLine(); // sb.AppendFormat("{0} sectors on volume ({1} bytes)", hpfs_bpb.big_sectors, hpfs_bpb.big_sectors * hpfs_bpb.bps).AppendLine(); sb.AppendFormat(Localization.BIOS_drive_number_0, bpb.drive_no).AppendLine(); sb.AppendFormat(Localization.NT_Flags_0, bpb.nt_flags).AppendLine(); sb.AppendFormat(Localization.Signature_0, bpb.signature).AppendLine(); sb.AppendFormat(Localization.Serial_number_0, bpb.serial_no).AppendLine(); sb.AppendFormat(Localization.Volume_label_0, StringHandlers.CToString(bpb.volume_label, Encoding)).AppendLine(); // sb.AppendFormat("Filesystem type: \"{0}\"", hpfs_bpb.fs_type).AppendLine(); DateTime lastChk = DateHandlers.UnixToDateTime(hpfsSb.last_chkdsk); DateTime lastOptim = DateHandlers.UnixToDateTime(hpfsSb.last_optim); sb.AppendFormat(Localization.HPFS_version_0, hpfsSb.version).AppendLine(); sb.AppendFormat(Localization.Functional_version_0, hpfsSb.func_version).AppendLine(); sb.AppendFormat(Localization.Sector_of_root_directory_FNode_0, hpfsSb.root_fnode).AppendLine(); sb.AppendFormat(Localization._0_sectors_are_marked_bad, hpfsSb.badblocks).AppendLine(); sb.AppendFormat(Localization.Sector_of_free_space_bitmaps_0, hpfsSb.bitmap_lsn).AppendLine(); sb.AppendFormat(Localization.Sector_of_bad_blocks_list_0, hpfsSb.badblock_lsn).AppendLine(); if(hpfsSb.last_chkdsk > 0) sb.AppendFormat(Localization.Date_of_last_integrity_check_0, lastChk).AppendLine(); else sb.AppendLine(Localization.Filesystem_integrity_has_never_been_checked); if(hpfsSb.last_optim > 0) sb.AppendFormat(Localization.Date_of_last_optimization_0, lastOptim).AppendLine(); else sb.AppendLine(Localization.Filesystem_has_never_been_optimized); sb.AppendFormat(Localization.Directory_band_has_0_sectors, hpfsSb.dband_sectors).AppendLine(); sb.AppendFormat(Localization.Directory_band_starts_at_sector_0, hpfsSb.dband_start).AppendLine(); sb.AppendFormat(Localization.Directory_band_ends_at_sector_0, hpfsSb.dband_last).AppendLine(); sb.AppendFormat(Localization.Sector_of_directory_band_bitmap_0, hpfsSb.dband_bitmap).AppendLine(); sb.AppendFormat(Localization.Sector_of_ACL_directory_0, hpfsSb.acl_start).AppendLine(); sb.AppendFormat(Localization.Sector_of_Hotfix_directory_0, sp.hotfix_start).AppendLine(); sb.AppendFormat(Localization._0_used_Hotfix_entries, sp.hotfix_used).AppendLine(); sb.AppendFormat(Localization._0_total_Hotfix_entries, sp.hotfix_entries).AppendLine(); sb.AppendFormat(Localization._0_free_spare_DNodes, sp.spare_dnodes_free).AppendLine(); sb.AppendFormat(Localization._0_total_spare_DNodes, sp.spare_dnodes).AppendLine(); sb.AppendFormat(Localization.Sector_of_codepage_directory_0, sp.codepage_lsn).AppendLine(); sb.AppendFormat(Localization._0_codepages_used_in_the_volume, sp.codepages).AppendLine(); sb.AppendFormat(Localization.SuperBlock_CRC32_0, sp.sb_crc32).AppendLine(); sb.AppendFormat(Localization.SpareBlock_CRC32_0, sp.sp_crc32).AppendLine(); sb.AppendLine(Localization.Flags); sb.AppendLine((sp.flags1 & 0x01) == 0x01 ? Localization.Filesystem_is_dirty : Localization.Filesystem_is_clean); if((sp.flags1 & 0x02) == 0x02) sb.AppendLine(Localization.Spare_directory_blocks_are_in_use); if((sp.flags1 & 0x04) == 0x04) sb.AppendLine(Localization.Hotfixes_are_in_use); if((sp.flags1 & 0x08) == 0x08) sb.AppendLine(Localization.Disk_contains_bad_sectors); if((sp.flags1 & 0x10) == 0x10) sb.AppendLine(Localization.Disk_has_a_bad_bitmap); if((sp.flags1 & 0x20) == 0x20) sb.AppendLine(Localization.Filesystem_was_formatted_fast); if((sp.flags1 & 0x40) == 0x40) sb.AppendLine(Localization.Unknown_flag_0x40_on_flags1_is_active); if((sp.flags1 & 0x80) == 0x80) sb.AppendLine(Localization.Filesystem_has_been_mounted_by_an_old_IFS); if((sp.flags2 & 0x01) == 0x01) sb.AppendLine(Localization.Install_DASD_limits); if((sp.flags2 & 0x02) == 0x02) sb.AppendLine(Localization.Resync_DASD_limits); if((sp.flags2 & 0x04) == 0x04) sb.AppendLine(Localization.DASD_limits_are_operational); if((sp.flags2 & 0x08) == 0x08) sb.AppendLine(Localization.Multimedia_is_active); if((sp.flags2 & 0x10) == 0x10) sb.AppendLine(Localization.DCE_ACLs_are_active); if((sp.flags2 & 0x20) == 0x20) sb.AppendLine(Localization.DASD_limits_are_dirty); if((sp.flags2 & 0x40) == 0x40) sb.AppendLine(Localization.Unknown_flag_0x40_on_flags2_is_active); if((sp.flags2 & 0x80) == 0x80) sb.AppendLine(Localization.Unknown_flag_0x80_on_flags2_is_active); XmlFsType = new FileSystemType(); // Theoretically everything from BPB to SB is boot code, should I hash everything or only the sector loaded by BIOS itself? if(bpb.jump[0] == 0xEB && bpb.jump[1] > 0x3C && bpb.jump[1] < 0x80 && bpb.signature2 == 0xAA55) { XmlFsType.Bootable = true; string bootChk = Sha1Context.Data(bpb.boot_code, out byte[] _); sb.AppendLine(Localization.Volume_is_bootable); sb.AppendFormat(Localization.Boot_code_SHA1_0, bootChk).AppendLine(); } XmlFsType.Dirty |= (sp.flags1 & 0x01) == 0x01; XmlFsType.Clusters = hpfsSb.sectors; XmlFsType.ClusterSize = bpb.bps; XmlFsType.Type = FS_TYPE; XmlFsType.VolumeName = StringHandlers.CToString(bpb.volume_label, Encoding); XmlFsType.VolumeSerial = $"{bpb.serial_no:X8}"; XmlFsType.SystemIdentifier = StringHandlers.CToString(bpb.oem_name); information = sb.ToString(); } }