// /*************************************************************************** // The Disc Image Chef // ---------------------------------------------------------------------------- // // Filename : Info.cs // Author(s) : Natalia Portillo // // Component : Apple Macintosh File System plugin. // // --[ Description ] ---------------------------------------------------------- // // Identifies the Apple Macintosh 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 © 2011-2018 Natalia Portillo // ****************************************************************************/ using System; using System.Text; using DiscImageChef.CommonTypes; namespace DiscImageChef.Filesystems.AppleMFS { // Information from Inside Macintosh Volume II public partial class AppleMFS : Filesystem { public override bool Identify(DiscImages.ImagePlugin imagePlugin, Partition partition) { ushort drSigWord; if((2 + partition.Start) >= partition.End) return false; byte[] mdb_sector = imagePlugin.ReadSector(2 + partition.Start); BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; drSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0x000); return drSigWord == MFS_MAGIC; } public override void GetInformation(DiscImages.ImagePlugin imagePlugin, Partition partition, out string information) { information = ""; StringBuilder sb = new StringBuilder(); MFS_MasterDirectoryBlock MDB = new MFS_MasterDirectoryBlock(); MFS_BootBlock BB = new MFS_BootBlock(); byte[] pString = new byte[16]; byte[] variable_size; byte[] mdb_sector = imagePlugin.ReadSector(2 + partition.Start); byte[] bb_sector = imagePlugin.ReadSector(0 + partition.Start); BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian; MDB.drSigWord = BigEndianBitConverter.ToUInt16(mdb_sector, 0x000); if(MDB.drSigWord != MFS_MAGIC) return; MDB.drCrDate = BigEndianBitConverter.ToUInt32(mdb_sector, 0x002); MDB.drLsBkUp = BigEndianBitConverter.ToUInt32(mdb_sector, 0x006); MDB.drAtrb = BigEndianBitConverter.ToUInt16(mdb_sector, 0x00A); MDB.drNmFls = BigEndianBitConverter.ToUInt16(mdb_sector, 0x00C); MDB.drDirSt = BigEndianBitConverter.ToUInt16(mdb_sector, 0x00E); MDB.drBlLen = BigEndianBitConverter.ToUInt16(mdb_sector, 0x010); MDB.drNmAlBlks = BigEndianBitConverter.ToUInt16(mdb_sector, 0x012); MDB.drAlBlkSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x014); MDB.drClpSiz = BigEndianBitConverter.ToUInt32(mdb_sector, 0x018); MDB.drAlBlSt = BigEndianBitConverter.ToUInt16(mdb_sector, 0x01C); MDB.drNxtFNum = BigEndianBitConverter.ToUInt32(mdb_sector, 0x01E); MDB.drFreeBks = BigEndianBitConverter.ToUInt16(mdb_sector, 0x022); MDB.drVNSiz = mdb_sector[0x024]; variable_size = new byte[MDB.drVNSiz + 1]; Array.Copy(mdb_sector, 0x024, variable_size, 0, MDB.drVNSiz + 1); MDB.drVN = StringHandlers.PascalToString(variable_size, CurrentEncoding); BB.signature = BigEndianBitConverter.ToUInt16(bb_sector, 0x000); if(BB.signature == MFSBB_MAGIC) { BB.branch = BigEndianBitConverter.ToUInt32(bb_sector, 0x002); BB.boot_flags = bb_sector[0x006]; BB.boot_version = bb_sector[0x007]; BB.sec_sv_pages = BigEndianBitConverter.ToInt16(bb_sector, 0x008); Array.Copy(mdb_sector, 0x00A, pString, 0, 16); BB.system_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x01A, pString, 0, 16); BB.finder_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x02A, pString, 0, 16); BB.debug_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x03A, pString, 0, 16); BB.disasm_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x04A, pString, 0, 16); BB.stupscr_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x05A, pString, 0, 16); BB.bootup_name = StringHandlers.PascalToString(pString, CurrentEncoding); Array.Copy(mdb_sector, 0x06A, pString, 0, 16); BB.clipbrd_name = StringHandlers.PascalToString(pString, CurrentEncoding); BB.max_files = BigEndianBitConverter.ToUInt16(bb_sector, 0x07A); BB.queue_size = BigEndianBitConverter.ToUInt16(bb_sector, 0x07C); BB.heap_128k = BigEndianBitConverter.ToUInt32(bb_sector, 0x07E); BB.heap_256k = BigEndianBitConverter.ToUInt32(bb_sector, 0x082); BB.heap_512k = BigEndianBitConverter.ToUInt32(bb_sector, 0x086); } else BB.signature = 0x0000; sb.AppendLine("Apple Macintosh File System"); sb.AppendLine(); sb.AppendLine("Master Directory Block:"); sb.AppendFormat("Creation date: {0}", DateHandlers.MacToDateTime(MDB.drCrDate)).AppendLine(); sb.AppendFormat("Last backup date: {0}", DateHandlers.MacToDateTime(MDB.drLsBkUp)).AppendLine(); if((MDB.drAtrb & 0x80) == 0x80) sb.AppendLine("Volume is locked by hardware."); if((MDB.drAtrb & 0x8000) == 0x8000) sb.AppendLine("Volume is locked by software."); sb.AppendFormat("{0} files on volume", MDB.drNmFls).AppendLine(); sb.AppendFormat("First directory sector: {0}", MDB.drDirSt).AppendLine(); sb.AppendFormat("{0} sectors in directory.", MDB.drBlLen).AppendLine(); sb.AppendFormat("{0} volume allocation blocks.", MDB.drNmAlBlks + 1).AppendLine(); sb.AppendFormat("Size of allocation blocks: {0} bytes", MDB.drAlBlkSiz).AppendLine(); sb.AppendFormat("{0} bytes to allocate.", MDB.drClpSiz).AppendLine(); sb.AppendFormat("First allocation block (#2) starts in sector {0}.", MDB.drAlBlSt).AppendLine(); sb.AppendFormat("Next unused file number: {0}", MDB.drNxtFNum).AppendLine(); sb.AppendFormat("{0} unused allocation blocks.", MDB.drFreeBks).AppendLine(); sb.AppendFormat("Volume name: {0}", MDB.drVN).AppendLine(); if(BB.signature == MFSBB_MAGIC) { sb.AppendLine("Volume is bootable."); sb.AppendLine(); sb.AppendLine("Boot Block:"); if((BB.boot_flags & 0x40) == 0x40) sb.AppendLine("Boot block should be executed."); if((BB.boot_flags & 0x80) == 0x80) { sb.AppendLine("Boot block is in new unknown format."); } else { if(BB.sec_sv_pages > 0) sb.AppendLine("Allocate secondary sound buffer at boot."); else if(BB.sec_sv_pages < 0) sb.AppendLine("Allocate secondary sound and video buffers at boot."); sb.AppendFormat("System filename: {0}", BB.system_name).AppendLine(); sb.AppendFormat("Finder filename: {0}", BB.finder_name).AppendLine(); sb.AppendFormat("Debugger filename: {0}", BB.debug_name).AppendLine(); sb.AppendFormat("Disassembler filename: {0}", BB.disasm_name).AppendLine(); sb.AppendFormat("Startup screen filename: {0}", BB.stupscr_name).AppendLine(); sb.AppendFormat("First program to execute at boot: {0}", BB.bootup_name).AppendLine(); sb.AppendFormat("Clipboard filename: {0}", BB.clipbrd_name).AppendLine(); sb.AppendFormat("Maximum opened files: {0}", BB.max_files * 4).AppendLine(); sb.AppendFormat("Event queue size: {0}", BB.queue_size).AppendLine(); sb.AppendFormat("Heap size with 128KiB of RAM: {0} bytes", BB.heap_128k).AppendLine(); sb.AppendFormat("Heap size with 256KiB of RAM: {0} bytes", BB.heap_256k).AppendLine(); sb.AppendFormat("Heap size with 512KiB of RAM or more: {0} bytes", BB.heap_512k).AppendLine(); } } else sb.AppendLine("Volume is not bootable."); information = sb.ToString(); xmlFSType = new Schemas.FileSystemType(); if(MDB.drLsBkUp > 0) { xmlFSType.BackupDate = DateHandlers.MacToDateTime(MDB.drLsBkUp); xmlFSType.BackupDateSpecified = true; } xmlFSType.Bootable = BB.signature == MFSBB_MAGIC; xmlFSType.Clusters = MDB.drNmAlBlks; xmlFSType.ClusterSize = (int)MDB.drAlBlkSiz; if(MDB.drCrDate > 0) { xmlFSType.CreationDate = DateHandlers.MacToDateTime(MDB.drCrDate); xmlFSType.CreationDateSpecified = true; } xmlFSType.Files = MDB.drNmFls; xmlFSType.FilesSpecified = true; xmlFSType.FreeClusters = MDB.drFreeBks; xmlFSType.FreeClustersSpecified = true; xmlFSType.Type = "MFS"; xmlFSType.VolumeName = MDB.drVN; return; } } }