using System; using System.IO; using System.Text; using FileSystemIDandChk; // Information from Inside Macintosh // TODO: Implement support for disc images /* namespace FileSystemIDandChk.Plugins { class AppleMFS : Plugin { private const UInt16 MFS_MAGIC = 0xD2D7; private const UInt16 MFSBB_MAGIC = 0x4C4B; // "LK" public AppleMFS(PluginBase Core) { base.Name = "Apple Macintosh File System"; base.PluginUUID = new Guid("36405F8D-0D26-4066-6538-5DBF5D065C3A"); } public override bool Identify(FileStream stream, long offset) { UInt16 drSigWord; EndianAwareBinaryReader eabr = new EndianAwareBinaryReader(stream, false); // BigEndian eabr.BaseStream.Seek(0x400 + offset, SeekOrigin.Begin); drSigWord = eabr.ReadUInt16(); if(drSigWord == MFS_MAGIC) return true; else return false; } public override void GetInformation (FileStream stream, long offset, out string information) { information = ""; StringBuilder sb = new StringBuilder(); MFS_MasterDirectoryBlock MDB = new MFS_MasterDirectoryBlock(); MFS_BootBlock BB = new MFS_BootBlock(); byte[] pString; byte[] variable_size; EndianAwareBinaryReader eabr = new EndianAwareBinaryReader(stream, false); // BigEndian eabr.BaseStream.Seek(0x400 + offset, SeekOrigin.Begin); MDB.drSigWord = eabr.ReadUInt16(); if(MDB.drSigWord != MFS_MAGIC) return; MDB.drCrDate = eabr.ReadUInt32(); MDB.drLsBkUp = eabr.ReadUInt32(); MDB.drAtrb = eabr.ReadUInt16(); MDB.drNmFls = eabr.ReadUInt16(); MDB.drDirSt = eabr.ReadUInt16(); MDB.drBlLen = eabr.ReadUInt16(); MDB.drNmAlBlks = eabr.ReadUInt16(); MDB.drAlBlkSiz = eabr.ReadUInt32(); MDB.drClpSiz = eabr.ReadUInt32(); MDB.drAlBlSt = eabr.ReadUInt16(); MDB.drNxtFNum = eabr.ReadUInt32(); MDB.drFreeBks = eabr.ReadUInt16(); MDB.drVNSiz = eabr.ReadByte(); variable_size = eabr.ReadBytes(MDB.drVNSiz); MDB.drVN = Encoding.ASCII.GetString(variable_size); eabr.BaseStream.Seek(0 + offset, SeekOrigin.Begin); BB.signature = eabr.ReadUInt16(); if(BB.signature == MFSBB_MAGIC) { BB.branch = eabr.ReadUInt32(); BB.boot_flags = eabr.ReadByte(); BB.boot_version = eabr.ReadByte(); BB.sec_sv_pages = eabr.ReadInt16(); pString = eabr.ReadBytes(16); BB.system_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.finder_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.debug_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.disasm_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.stupscr_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.bootup_name = StringHandlers.PascalToString(pString); pString = eabr.ReadBytes(16); BB.clipbrd_name = StringHandlers.PascalToString(pString); BB.max_files = eabr.ReadUInt16(); BB.queue_size = eabr.ReadUInt16(); BB.heap_128k = eabr.ReadUInt32(); BB.heap_256k = eabr.ReadUInt32(); BB.heap_512k = eabr.ReadUInt32(); } 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 block: {0}", MDB.drDirSt).AppendLine(); sb.AppendFormat("{0} blocks in directory.", MDB.drBlLen).AppendLine(); sb.AppendFormat("{0} volume allocation blocks.", MDB.drNmAlBlks).AppendLine(); sb.AppendFormat("Size of allocation blocks: {0}", MDB.drAlBlkSiz).AppendLine(); sb.AppendFormat("{0} bytes to allocate.", MDB.drClpSiz).AppendLine(); sb.AppendFormat("{0} first allocation block.", 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(); return; } private struct MFS_MasterDirectoryBlock // Should be offset 0x0400 bytes in volume { public UInt16 drSigWord; // 0x000, Signature, 0xD2D7 public ulong drCrDate; // 0x002, Volume creation date public ulong drLsBkUp; // 0x00A, Volume last backup date public UInt16 drAtrb; // 0x012, Volume attributes public UInt16 drNmFls; // 0x014, Volume number of files public UInt16 drDirSt; // 0x016, First directory block public UInt16 drBlLen; // 0x018, Length of directory in blocks public UInt16 drNmAlBlks; // 0x01A, Volume allocation blocks public UInt32 drAlBlkSiz; // 0x01C, Size of allocation blocks public UInt32 drClpSiz; // 0x020, Number of bytes to allocate public UInt16 drAlBlSt; // 0x024, First allocation block in block map public UInt32 drNxtFNum; // 0x026. Next unused file number public UInt16 drFreeBks; // 0x02A, Number of unused allocation blocks public byte drVNSiz; // 0x02C, Length of volume name public string drVN; // 0x02D, Characters of volume name } private struct MFS_BootBlock // Should be offset 0x0000 bytes in volume { public UInt16 signature; // 0x000, Signature, 0x4C4B if bootable public UInt32 branch; // 0x002, Branch public byte boot_flags; // 0x006, Boot block flags public byte boot_version; // 0x007, Boot block version public short sec_sv_pages; // 0x008, Allocate secondary buffers public string system_name; // 0x00A, System file name (10 bytes) public string finder_name; // 0x014, Finder file name (10 bytes) public string debug_name; // 0x01E, Debugger file name (10 bytes) public string disasm_name; // 0x028, Disassembler file name (10 bytes) public string stupscr_name; // 0x032, Startup screen file name (10 bytes) public string bootup_name; // 0x03C, First program to execute on boot (10 bytes) public string clipbrd_name; // 0x046, Clipboard file name (10 bytes) public UInt16 max_files; // 0x050, 1/4 of maximum opened at a time files public UInt16 queue_size; // 0x052, Event queue size public UInt32 heap_128k; // 0x054, Heap size on a Mac with 128KiB of RAM public UInt32 heap_256k; // 0x058, Heap size on a Mac with 256KiB of RAM public UInt32 heap_512k; // 0x05C, Heap size on a Mac with 512KiB of RAM or more } // Follows boot code } } */