// /*************************************************************************** // The Disc Image Chef // ---------------------------------------------------------------------------- // // Filename : DriDiskCopy.cs // Author(s) : Natalia Portillo // // Component : Disk image plugins. // // --[ Description ] ---------------------------------------------------------- // // Manages Digital Research's DISKCOPY disk images. // // --[ 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.Collections.Generic; using System.IO; using System.Runtime.InteropServices; using System.Text.RegularExpressions; using DiscImageChef.CommonTypes; using DiscImageChef.Console; using DiscImageChef.Filters; namespace DiscImageChef.DiscImages { public class DriDiskCopy : ImagePlugin { #region Internal Structures [StructLayout(LayoutKind.Sequential, Pack = 1)] struct DriFooter { /// Signature: "DiskImage 2.01 (C) 1990,1991 Digital Research Inc\0" [MarshalAs(UnmanagedType.ByValArray, SizeConst = 51)] public byte[] signature; /// Information about the disk image, mostly imitates FAT BPB public DriBpb bpb; /// Information about the disk image, mostly imitates FAT BPB, copy public DriBpb bpbcopy; } [StructLayout(LayoutKind.Sequential, Pack = 1)] struct DriBpb { /// Seems to be always 0x05 public byte five; /// A drive code that corresponds (but it not equal to) CMOS drive types public DriDriveCodes driveCode; /// Unknown seems to be always 2 public ushort unknown; /// Cylinders public ushort cylinders; /// Seems to always be 0 public byte unknown2; /// Bytes per sector public ushort bps; /// Sectors per cluster public byte spc; /// Sectors between BPB and FAT public ushort rsectors; /// How many FATs public byte fats_no; /// Entries in root directory public ushort root_entries; /// Total sectors public ushort sectors; /// Media descriptor public byte media_descriptor; /// Sectors per FAT public ushort spfat; /// Sectors per track public ushort sptrack; /// Heads public ushort heads; /// Hidden sectors before BPB public uint hsectors; /// Drive number public byte drive_no; /// Seems to be 0 public ulong unknown3; /// Seems to be 0 public byte unknown4; /// Sectors per track (again?) public ushort sptrack2; /// Seems to be 0 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 144)] public byte[] unknown5; } #endregion #region Internal Constants /// /// Drive codes change according to CMOS stored valued /// enum DriDriveCodes : byte { /// 5.25" 360k md2dd = 0, /// 5.25" 1.2M md2hd = 1, /// 3.5" 720k mf2dd = 2, /// 3.5" 1.44M mf2hd = 7, /// 3.5" 2.88M mf2ed = 9 } const string DRI_REG_EX = "DiskImage\\s(?\\d+.\\d+)\\s\\(C\\)\\s\\d+\\,*\\d*\\s+Digital Research Inc"; #endregion #region Internal variables /// Footer of opened image DriFooter footer; /// Disk image file Filter driImageFilter; #endregion public DriDiskCopy() { Name = "Digital Research DiskCopy"; PluginUuid = new Guid("9F0BE551-8BAB-4038-8B5A-691F1BF5FFF3"); ImageInfo = new ImageInfo(); ImageInfo.ReadableSectorTags = new List(); ImageInfo.ReadableMediaTags = new List(); ImageInfo.ImageHasPartitions = false; ImageInfo.ImageHasSessions = false; ImageInfo.ImageApplication = "DiskCopy"; ImageInfo.ImageCreator = null; ImageInfo.ImageComments = null; ImageInfo.MediaManufacturer = null; ImageInfo.MediaModel = null; ImageInfo.MediaSerialNumber = null; ImageInfo.MediaBarcode = null; ImageInfo.MediaPartNumber = null; ImageInfo.MediaSequence = 0; ImageInfo.LastMediaSequence = 0; ImageInfo.DriveManufacturer = null; ImageInfo.DriveModel = null; ImageInfo.DriveSerialNumber = null; ImageInfo.DriveFirmwareRevision = null; } public override bool IdentifyImage(Filter imageFilter) { Stream stream = imageFilter.GetDataForkStream(); if((stream.Length - Marshal.SizeOf(typeof(DriFooter))) % 512 != 0) return false; byte[] buffer = new byte[Marshal.SizeOf(typeof(DriFooter))]; stream.Seek(-buffer.Length, SeekOrigin.End); stream.Read(buffer, 0, buffer.Length); DriFooter tmpFooter = new DriFooter(); IntPtr ftrPtr = Marshal.AllocHGlobal(buffer.Length); Marshal.Copy(buffer, 0, ftrPtr, buffer.Length); tmpFooter = (DriFooter)Marshal.PtrToStructure(ftrPtr, typeof(DriFooter)); Marshal.FreeHGlobal(ftrPtr); string sig = StringHandlers.CToString(tmpFooter.signature); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.signature = \"{0}\"", sig); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.five = {0}", tmpFooter.bpb.five); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.driveCode = {0}", tmpFooter.bpb.driveCode); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.unknown = {0}", tmpFooter.bpb.unknown); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.cylinders = {0}", tmpFooter.bpb.cylinders); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.unknown2 = {0}", tmpFooter.bpb.unknown2); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.bps = {0}", tmpFooter.bpb.bps); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.spc = {0}", tmpFooter.bpb.spc); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.rsectors = {0}", tmpFooter.bpb.rsectors); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.fats_no = {0}", tmpFooter.bpb.fats_no); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.sectors = {0}", tmpFooter.bpb.sectors); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.media_descriptor = {0}", tmpFooter.bpb.media_descriptor); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.spfat = {0}", tmpFooter.bpb.spfat); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.sptrack = {0}", tmpFooter.bpb.sptrack); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.heads = {0}", tmpFooter.bpb.heads); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.hsectors = {0}", tmpFooter.bpb.hsectors); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.drive_no = {0}", tmpFooter.bpb.drive_no); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.unknown3 = {0}", tmpFooter.bpb.unknown3); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.unknown4 = {0}", tmpFooter.bpb.unknown4); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "tmp_footer.bpb.sptrack2 = {0}", tmpFooter.bpb.sptrack2); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "ArrayHelpers.ArrayIsNullOrEmpty(tmp_footer.bpb.unknown5) = {0}", ArrayHelpers.ArrayIsNullOrEmpty(tmpFooter.bpb.unknown5)); Regex regexSignature = new Regex(DRI_REG_EX); Match matchSignature = regexSignature.Match(sig); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "MatchSignature.Success? = {0}", matchSignature.Success); if(!matchSignature.Success) return false; if(tmpFooter.bpb.sptrack * tmpFooter.bpb.cylinders * tmpFooter.bpb.heads != tmpFooter.bpb.sectors) return false; if((tmpFooter.bpb.sectors * tmpFooter.bpb.bps) + Marshal.SizeOf(tmpFooter) != stream.Length) return false; return true; } public override bool OpenImage(Filter imageFilter) { Stream stream = imageFilter.GetDataForkStream(); if((stream.Length - Marshal.SizeOf(typeof(DriFooter))) % 512 != 0) return false; byte[] buffer = new byte[Marshal.SizeOf(typeof(DriFooter))]; stream.Seek(-buffer.Length, SeekOrigin.End); stream.Read(buffer, 0, buffer.Length); footer = new DriFooter(); IntPtr ftrPtr = Marshal.AllocHGlobal(buffer.Length); Marshal.Copy(buffer, 0, ftrPtr, buffer.Length); footer = (DriFooter)Marshal.PtrToStructure(ftrPtr, typeof(DriFooter)); Marshal.FreeHGlobal(ftrPtr); string sig = StringHandlers.CToString(footer.signature); Regex regexSignature = new Regex(DRI_REG_EX); Match matchSignature = regexSignature.Match(sig); if(!matchSignature.Success) return false; if(footer.bpb.sptrack * footer.bpb.cylinders * footer.bpb.heads != footer.bpb.sectors) return false; if((footer.bpb.sectors * footer.bpb.bps) + Marshal.SizeOf(footer) != stream.Length) return false; ImageInfo.Cylinders = footer.bpb.cylinders; ImageInfo.Heads = footer.bpb.heads; ImageInfo.SectorsPerTrack = footer.bpb.sptrack; ImageInfo.Sectors = footer.bpb.sectors; ImageInfo.SectorSize = footer.bpb.bps; ImageInfo.ImageApplicationVersion = matchSignature.Groups["version"].Value; driImageFilter = imageFilter; ImageInfo.ImageSize = (ulong)(stream.Length - Marshal.SizeOf(footer)); ImageInfo.ImageCreationTime = imageFilter.GetCreationTime(); ImageInfo.ImageLastModificationTime = imageFilter.GetLastWriteTime(); DicConsole.DebugWriteLine("DRI DiskCopy plugin", "Image application = {0} version {1}", ImageInfo.ImageApplication, ImageInfo.ImageApplicationVersion); // Correct some incorrect data in images of NEC 2HD disks if(ImageInfo.Cylinders == 77 && ImageInfo.Heads == 2 && ImageInfo.SectorsPerTrack == 16 && ImageInfo.SectorSize == 512 && (footer.bpb.driveCode == DriDriveCodes.md2hd || footer.bpb.driveCode == DriDriveCodes.mf2hd)) { ImageInfo.SectorsPerTrack = 8; ImageInfo.SectorSize = 1024; } switch(footer.bpb.driveCode) { case DriDriveCodes.md2hd: if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 15 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_525_HD; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 16 && ImageInfo.SectorSize == 256) ImageInfo.MediaType = MediaType.ACORN_525_DS_DD; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 16 && ImageInfo.SectorSize == 256) ImageInfo.MediaType = MediaType.ACORN_525_SS_DD_80; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 10 && ImageInfo.SectorSize == 256) ImageInfo.MediaType = MediaType.ACORN_525_SS_SD_80; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 77 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 1024) ImageInfo.MediaType = MediaType.NEC_525_HD; else goto case DriDriveCodes.md2dd; break; case DriDriveCodes.md2dd: if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_525_SS_DD_8; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 9 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_525_SS_DD_9; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_525_DS_DD_8; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 9 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_525_DS_DD_9; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 18 && ImageInfo.SectorSize == 128) ImageInfo.MediaType = MediaType.ATARI_525_SD; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 26 && ImageInfo.SectorSize == 128) ImageInfo.MediaType = MediaType.ATARI_525_ED; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 40 && ImageInfo.SectorsPerTrack == 18 && ImageInfo.SectorSize == 256) ImageInfo.MediaType = MediaType.ATARI_525_DD; else ImageInfo.MediaType = MediaType.Unknown; break; case DriDriveCodes.mf2ed: if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 36 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_ED; else goto case DriDriveCodes.mf2hd; break; case DriDriveCodes.mf2hd: if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 18 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_HD; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 21 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DMF; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 82 && ImageInfo.SectorsPerTrack == 21 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DMF_82; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 77 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 1024) ImageInfo.MediaType = MediaType.NEC_35_HD_8; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 15 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.NEC_35_HD_15; else goto case DriDriveCodes.mf2dd; break; case DriDriveCodes.mf2dd: if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 9 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_DS_DD_9; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_DS_DD_8; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 9 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_SS_DD_9; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 8 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.DOS_35_SS_DD_8; else if(ImageInfo.Heads == 2 && ImageInfo.Cylinders == 80 && ImageInfo.SectorsPerTrack == 5 && ImageInfo.SectorSize == 1024) ImageInfo.MediaType = MediaType.ACORN_35_DS_DD; else if(ImageInfo.Heads == 1 && ImageInfo.Cylinders == 70 && ImageInfo.SectorsPerTrack == 9 && ImageInfo.SectorSize == 512) ImageInfo.MediaType = MediaType.Apricot_35; else ImageInfo.MediaType = MediaType.Unknown; break; default: ImageInfo.MediaType = MediaType.Unknown; break; } ImageInfo.XmlMediaType = XmlMediaType.BlockMedia; DicConsole.VerboseWriteLine("Digital Research DiskCopy image contains a disk of type {0}", ImageInfo.MediaType); return true; } public override bool? VerifySector(ulong sectorAddress) { return null; } public override bool? VerifySector(ulong sectorAddress, uint track) { return null; } public override bool? VerifySectors(ulong sectorAddress, uint length, out List failingLbas, out List unknownLbas) { failingLbas = new List(); unknownLbas = new List(); for(ulong i = sectorAddress; i < sectorAddress + length; i++) unknownLbas.Add(i); return null; } public override bool? VerifySectors(ulong sectorAddress, uint length, uint track, out List failingLbas, out List unknownLbas) { failingLbas = new List(); unknownLbas = new List(); for(ulong i = sectorAddress; i < sectorAddress + length; i++) unknownLbas.Add(i); return null; } public override bool? VerifyMediaImage() { return null; } public override bool ImageHasPartitions() { return ImageInfo.ImageHasPartitions; } public override ulong GetImageSize() { return ImageInfo.ImageSize; } public override ulong GetSectors() { return ImageInfo.Sectors; } public override uint GetSectorSize() { return ImageInfo.SectorSize; } public override byte[] ReadSector(ulong sectorAddress) { return ReadSectors(sectorAddress, 1); } public override byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectors(ulong sectorAddress, uint length) { if(sectorAddress > ImageInfo.Sectors - 1) throw new ArgumentOutOfRangeException(nameof(sectorAddress), "Sector address not found"); if(sectorAddress + length > ImageInfo.Sectors) throw new ArgumentOutOfRangeException(nameof(length), "Requested more sectors than available"); byte[] buffer = new byte[length * ImageInfo.SectorSize]; Stream stream = driImageFilter.GetDataForkStream(); stream.Seek((long)(sectorAddress * ImageInfo.SectorSize), SeekOrigin.Begin); stream.Read(buffer, 0, (int)(length * ImageInfo.SectorSize)); return buffer; } public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, SectorTagType tag) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorLong(ulong sectorAddress) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorsLong(ulong sectorAddress, uint length) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override string GetImageFormat() { return "Digital Research DiskCopy"; } public override string GetImageVersion() { return ImageInfo.ImageVersion; } public override string GetImageApplication() { return ImageInfo.ImageApplication; } public override string GetImageApplicationVersion() { return ImageInfo.ImageApplicationVersion; } public override DateTime GetImageCreationTime() { return ImageInfo.ImageCreationTime; } public override DateTime GetImageLastModificationTime() { return ImageInfo.ImageLastModificationTime; } public override string GetImageName() { return ImageInfo.ImageName; } public override MediaType GetMediaType() { return ImageInfo.MediaType; } #region Unsupported features public override byte[] ReadDiskTag(MediaTagType tag) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override string GetImageCreator() { return ImageInfo.ImageCreator; } public override string GetImageComments() { return ImageInfo.ImageComments; } public override string GetMediaManufacturer() { return ImageInfo.MediaManufacturer; } public override string GetMediaModel() { return ImageInfo.MediaModel; } public override string GetMediaSerialNumber() { return ImageInfo.MediaSerialNumber; } public override string GetMediaBarcode() { return ImageInfo.MediaBarcode; } public override string GetMediaPartNumber() { return ImageInfo.MediaPartNumber; } public override int GetMediaSequence() { return ImageInfo.MediaSequence; } public override int GetLastDiskSequence() { return ImageInfo.LastMediaSequence; } public override string GetDriveManufacturer() { return ImageInfo.DriveManufacturer; } public override string GetDriveModel() { return ImageInfo.DriveModel; } public override string GetDriveSerialNumber() { return ImageInfo.DriveSerialNumber; } public override List GetPartitions() { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override List GetTracks() { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override List GetSessionTracks(Session session) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override List GetSessionTracks(ushort session) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override List GetSessions() { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSector(ulong sectorAddress, uint track) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorTag(ulong sectorAddress, uint track, SectorTagType tag) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectors(ulong sectorAddress, uint length, uint track) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorsTag(ulong sectorAddress, uint length, uint track, SectorTagType tag) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorLong(ulong sectorAddress, uint track) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } public override byte[] ReadSectorsLong(ulong sectorAddress, uint length, uint track) { throw new FeatureUnsupportedImageException("Feature not supported by image format"); } #endregion Unsupported features } }