mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
652 lines
28 KiB
C#
652 lines
28 KiB
C#
// /***************************************************************************
|
|
// Aaru Data Preservation Suite
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// Filename : Read.cs
|
|
// Author(s) : Natalia Portillo <claunia@claunia.com>
|
|
//
|
|
// Component : Disk image plugins.
|
|
//
|
|
// --[ Description ] ----------------------------------------------------------
|
|
//
|
|
// Reads Sydex TeleDisk 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 <http://www.gnu.org/licenses/>.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
// Copyright © 2011-2025 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
using System;
|
|
using System.IO;
|
|
using System.Text;
|
|
using Aaru.CommonTypes.Enums;
|
|
using Aaru.CommonTypes.Interfaces;
|
|
using Aaru.Compression;
|
|
using Aaru.Helpers;
|
|
using Aaru.Logging;
|
|
|
|
namespace Aaru.Images;
|
|
|
|
public sealed partial class TeleDisk
|
|
{
|
|
#region IMediaImage Members
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber Open(IFilter imageFilter)
|
|
{
|
|
_header = new Header();
|
|
var headerBytes = new byte[12];
|
|
_inStream = imageFilter.GetDataForkStream();
|
|
var stream = new MemoryStream();
|
|
_inStream.Seek(0, SeekOrigin.Begin);
|
|
|
|
_inStream.EnsureRead(headerBytes, 0, 12);
|
|
stream.Write(headerBytes, 0, 12);
|
|
|
|
_header.Signature = BitConverter.ToUInt16(headerBytes, 0);
|
|
|
|
if(_header.Signature != TD_MAGIC && _header.Signature != TD_ADV_COMP_MAGIC) return ErrorNumber.InvalidArgument;
|
|
|
|
_header.Sequence = headerBytes[2];
|
|
_header.DiskSet = headerBytes[3];
|
|
_header.Version = headerBytes[4];
|
|
_header.DataRate = headerBytes[5];
|
|
_header.DriveType = headerBytes[6];
|
|
_header.Stepping = headerBytes[7];
|
|
_header.DosAllocation = headerBytes[8];
|
|
_header.Sides = headerBytes[9];
|
|
_header.Crc = BitConverter.ToUInt16(headerBytes, 10);
|
|
|
|
_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.Filename);
|
|
_imageInfo.Version = $"{(_header.Version & 0xF0) >> 4}.{_header.Version & 0x0F}";
|
|
_imageInfo.Application = _imageInfo.Version;
|
|
|
|
var headerBytesForCrc = new byte[10];
|
|
Array.Copy(headerBytes, headerBytesForCrc, 10);
|
|
ushort calculatedHeaderCrc = TeleDiskCrc(0x0000, headerBytesForCrc);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "header.signature = 0x{0:X4}", _header.Signature);
|
|
AaruLogging.Debug(MODULE_NAME, "header.sequence = 0x{0:X2}", _header.Sequence);
|
|
AaruLogging.Debug(MODULE_NAME, "header.diskSet = 0x{0:X2}", _header.DiskSet);
|
|
AaruLogging.Debug(MODULE_NAME, "header.version = 0x{0:X2}", _header.Version);
|
|
AaruLogging.Debug(MODULE_NAME, "header.dataRate = 0x{0:X2}", _header.DataRate);
|
|
AaruLogging.Debug(MODULE_NAME, "header.driveType = 0x{0:X2}", _header.DriveType);
|
|
AaruLogging.Debug(MODULE_NAME, "header.stepping = 0x{0:X2}", _header.Stepping);
|
|
AaruLogging.Debug(MODULE_NAME, "header.dosAllocation = 0x{0:X2}", _header.DosAllocation);
|
|
AaruLogging.Debug(MODULE_NAME, "header.sides = 0x{0:X2}", _header.Sides);
|
|
AaruLogging.Debug(MODULE_NAME, "header.crc = 0x{0:X4}", _header.Crc);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.calculated_header_crc_equals_0_X4, calculatedHeaderCrc);
|
|
|
|
// We need more checks as the magic is too simply.
|
|
// This may deny legal images
|
|
|
|
// That would be much of a coincidence
|
|
if(_header.Crc != calculatedHeaderCrc)
|
|
{
|
|
_aDiskCrcHasFailed = true;
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Calculated_CRC_does_not_coincide_with_stored_one);
|
|
}
|
|
|
|
if(_header.Sequence != 0x00) return ErrorNumber.InvalidArgument;
|
|
|
|
if(_header.DataRate != DATA_RATE_250_KBPS &&
|
|
_header.DataRate != DATA_RATE_300_KBPS &&
|
|
_header.DataRate != DATA_RATE_500_KBPS)
|
|
return ErrorNumber.NotSupported;
|
|
|
|
if(_header.DriveType != DRIVE_TYPE_35_DD &&
|
|
_header.DriveType != DRIVE_TYPE_35_ED &&
|
|
_header.DriveType != DRIVE_TYPE_35_HD &&
|
|
_header.DriveType != DRIVE_TYPE_525_DD &&
|
|
_header.DriveType != DRIVE_TYPE_525_HD &&
|
|
_header.DriveType != DRIVE_TYPE_525_HD_DD_DISK &&
|
|
_header.DriveType != DRIVE_TYPE_8_INCH)
|
|
return ErrorNumber.NotSupported;
|
|
|
|
if(_header.Signature == TD_ADV_COMP_MAGIC)
|
|
{
|
|
int rd;
|
|
_inStream.Seek(12, SeekOrigin.Begin);
|
|
stream.Seek(12, SeekOrigin.Begin);
|
|
var lzh = new TeleDiskLzh(_inStream);
|
|
|
|
do
|
|
{
|
|
if((rd = lzh.Decode(out byte[] obuf, BUFSZ)) > 0) stream.Write(obuf, 0, rd);
|
|
} while(rd == BUFSZ);
|
|
}
|
|
else
|
|
{
|
|
// Not using Stream.CopyTo() because it's failing with LZIP
|
|
var copybuf = new byte[_inStream.Length];
|
|
_inStream.Seek(0, SeekOrigin.Begin);
|
|
_inStream.EnsureRead(copybuf, 0, copybuf.Length);
|
|
stream.Seek(0, SeekOrigin.Begin);
|
|
stream.Write(copybuf, 0, copybuf.Length);
|
|
}
|
|
|
|
stream.Seek(12, SeekOrigin.Begin);
|
|
|
|
_imageInfo.CreationTime = DateTime.MinValue;
|
|
|
|
if((_header.Stepping & COMMENT_BLOCK_PRESENT) == COMMENT_BLOCK_PRESENT)
|
|
{
|
|
_commentHeader = new CommentBlockHeader();
|
|
|
|
var commentHeaderBytes = new byte[10];
|
|
|
|
stream.EnsureRead(commentHeaderBytes, 0, 10);
|
|
_commentHeader.Crc = BitConverter.ToUInt16(commentHeaderBytes, 0);
|
|
_commentHeader.Length = BitConverter.ToUInt16(commentHeaderBytes, 2);
|
|
_commentHeader.Year = commentHeaderBytes[4];
|
|
_commentHeader.Month = commentHeaderBytes[5];
|
|
_commentHeader.Day = commentHeaderBytes[6];
|
|
_commentHeader.Hour = commentHeaderBytes[7];
|
|
_commentHeader.Minute = commentHeaderBytes[8];
|
|
_commentHeader.Second = commentHeaderBytes[9];
|
|
|
|
_commentBlock = new byte[_commentHeader.Length];
|
|
stream.EnsureRead(_commentBlock, 0, _commentHeader.Length);
|
|
|
|
var commentBlockForCrc = new byte[_commentHeader.Length + 8];
|
|
Array.Copy(commentHeaderBytes, 2, commentBlockForCrc, 0, 8);
|
|
Array.Copy(_commentBlock, 0, commentBlockForCrc, 8, _commentHeader.Length);
|
|
|
|
ushort cmtcrc = TeleDiskCrc(0, commentBlockForCrc);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Comment_header);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.crc = 0x{0:X4}", _commentHeader.Crc);
|
|
AaruLogging.Debug(MODULE_NAME, "\t" + Localization.Calculated_CRC_equals_0_X4, cmtcrc);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.length = {0} bytes", _commentHeader.Length);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.year = {0}", _commentHeader.Year);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.month = {0}", _commentHeader.Month);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.day = {0}", _commentHeader.Day);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.hour = {0}", _commentHeader.Hour);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.minute = {0}", _commentHeader.Minute);
|
|
AaruLogging.Debug(MODULE_NAME, "\tcommentheader.second = {0}", _commentHeader.Second);
|
|
|
|
_aDiskCrcHasFailed |= cmtcrc != _commentHeader.Crc;
|
|
|
|
for(var i = 0; i < _commentBlock.Length; i++)
|
|
|
|
// Replace NULLs, used by TeleDisk as newline markers, with UNIX newline marker
|
|
if(_commentBlock[i] == 0x00)
|
|
_commentBlock[i] = 0x0A;
|
|
|
|
_imageInfo.Comments = Encoding.ASCII.GetString(_commentBlock);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Comment);
|
|
AaruLogging.Debug(MODULE_NAME, "{0}", _imageInfo.Comments);
|
|
|
|
_imageInfo.CreationTime = new DateTime(_commentHeader.Year + 1900,
|
|
_commentHeader.Month + 1,
|
|
_commentHeader.Day,
|
|
_commentHeader.Hour,
|
|
_commentHeader.Minute,
|
|
_commentHeader.Second,
|
|
DateTimeKind.Unspecified);
|
|
}
|
|
|
|
if(_imageInfo.CreationTime == DateTime.MinValue) _imageInfo.CreationTime = imageFilter.CreationTime;
|
|
|
|
_imageInfo.LastModificationTime = imageFilter.LastWriteTime;
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Image_created_on_0, _imageInfo.CreationTime);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Image_modified_on_0, _imageInfo.LastModificationTime);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Parsing_image);
|
|
|
|
_totalDiskSize = 0;
|
|
_imageInfo.ImageSize = 0;
|
|
|
|
int totalCylinders = -1;
|
|
int totalHeads = -1;
|
|
int maxSector = -1;
|
|
var totalSectors = 0;
|
|
long currentPos = stream.Position;
|
|
_imageInfo.SectorSize = uint.MaxValue;
|
|
_imageInfo.SectorsPerTrack = uint.MaxValue;
|
|
|
|
// Count cylinders
|
|
while(true)
|
|
{
|
|
var teleDiskTrack = new TrackHeader
|
|
{
|
|
Sectors = (byte)stream.ReadByte(),
|
|
Cylinder = (byte)stream.ReadByte(),
|
|
Head = (byte)stream.ReadByte(),
|
|
Crc = (byte)stream.ReadByte()
|
|
};
|
|
|
|
if(teleDiskTrack.Cylinder > totalCylinders) totalCylinders = teleDiskTrack.Cylinder;
|
|
|
|
if(teleDiskTrack.Head > totalHeads) totalHeads = teleDiskTrack.Head;
|
|
|
|
if(teleDiskTrack.Sectors == 0xFF) // End of disk image
|
|
break;
|
|
|
|
for(byte processedSectors = 0; processedSectors < teleDiskTrack.Sectors; processedSectors++)
|
|
{
|
|
var teleDiskSector = new SectorHeader();
|
|
var teleDiskData = new DataHeader();
|
|
var dataSizeBytes = new byte[2];
|
|
|
|
teleDiskSector.Cylinder = (byte)stream.ReadByte();
|
|
teleDiskSector.Head = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorNumber = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorSize = (byte)stream.ReadByte();
|
|
teleDiskSector.Flags = (byte)stream.ReadByte();
|
|
teleDiskSector.Crc = (byte)stream.ReadByte();
|
|
|
|
if(teleDiskSector.SectorNumber > maxSector) maxSector = teleDiskSector.SectorNumber;
|
|
|
|
if((teleDiskSector.Flags & FLAGS_SECTOR_DATALESS) != FLAGS_SECTOR_DATALESS &&
|
|
(teleDiskSector.Flags & FLAGS_SECTOR_SKIPPED) != FLAGS_SECTOR_SKIPPED)
|
|
{
|
|
stream.EnsureRead(dataSizeBytes, 0, 2);
|
|
teleDiskData.DataSize = BitConverter.ToUInt16(dataSizeBytes, 0);
|
|
teleDiskData.DataSize--; // Sydex decided to including dataEncoding byte as part of it
|
|
teleDiskData.DataEncoding = (byte)stream.ReadByte();
|
|
var data = new byte[teleDiskData.DataSize];
|
|
stream.EnsureRead(data, 0, teleDiskData.DataSize);
|
|
}
|
|
|
|
if(128 << teleDiskSector.SectorSize < _imageInfo.SectorSize)
|
|
_imageInfo.SectorSize = (uint)(128 << teleDiskSector.SectorSize);
|
|
|
|
totalSectors++;
|
|
}
|
|
}
|
|
|
|
totalCylinders++;
|
|
totalHeads++;
|
|
|
|
if(totalCylinders <= 0 || totalHeads <= 0)
|
|
{
|
|
AaruLogging.Error(Localization.No_cylinders_or_heads_found);
|
|
|
|
return ErrorNumber.InvalidArgument;
|
|
}
|
|
|
|
var hasLeadOutOnHead0 = false;
|
|
var hasLeadOutOnHead1 = false;
|
|
_imageInfo.Cylinders = (ushort)totalCylinders;
|
|
_imageInfo.Heads = (byte)totalHeads;
|
|
|
|
// Count sectors per track
|
|
stream.Seek(currentPos, SeekOrigin.Begin);
|
|
|
|
while(true)
|
|
{
|
|
var teleDiskTrack = new TrackHeader
|
|
{
|
|
Sectors = (byte)stream.ReadByte(),
|
|
Cylinder = (byte)stream.ReadByte(),
|
|
Head = (byte)stream.ReadByte(),
|
|
Crc = (byte)stream.ReadByte()
|
|
};
|
|
|
|
if(teleDiskTrack.Sectors == 0xFF) // End of disk image
|
|
break;
|
|
|
|
if(teleDiskTrack.Sectors < _imageInfo.SectorsPerTrack)
|
|
{
|
|
if(teleDiskTrack.Cylinder + 1 == totalCylinders)
|
|
{
|
|
hasLeadOutOnHead0 |= teleDiskTrack.Head == 0;
|
|
hasLeadOutOnHead1 |= teleDiskTrack.Head == 1;
|
|
|
|
if(_imageInfo.Cylinders == totalCylinders) _imageInfo.Cylinders--;
|
|
}
|
|
else
|
|
_imageInfo.SectorsPerTrack = teleDiskTrack.Sectors;
|
|
}
|
|
|
|
for(byte processedSectors = 0; processedSectors < teleDiskTrack.Sectors; processedSectors++)
|
|
{
|
|
var teleDiskSector = new SectorHeader();
|
|
var teleDiskData = new DataHeader();
|
|
var dataSizeBytes = new byte[2];
|
|
|
|
teleDiskSector.Cylinder = (byte)stream.ReadByte();
|
|
teleDiskSector.Head = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorNumber = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorSize = (byte)stream.ReadByte();
|
|
teleDiskSector.Flags = (byte)stream.ReadByte();
|
|
teleDiskSector.Crc = (byte)stream.ReadByte();
|
|
|
|
if((teleDiskSector.Flags & FLAGS_SECTOR_DATALESS) == FLAGS_SECTOR_DATALESS ||
|
|
(teleDiskSector.Flags & FLAGS_SECTOR_SKIPPED) == FLAGS_SECTOR_SKIPPED)
|
|
continue;
|
|
|
|
stream.EnsureRead(dataSizeBytes, 0, 2);
|
|
teleDiskData.DataSize = BitConverter.ToUInt16(dataSizeBytes, 0);
|
|
teleDiskData.DataSize--; // Sydex decided to including dataEncoding byte as part of it
|
|
teleDiskData.DataEncoding = (byte)stream.ReadByte();
|
|
var data = new byte[teleDiskData.DataSize];
|
|
stream.EnsureRead(data, 0, teleDiskData.DataSize);
|
|
}
|
|
}
|
|
|
|
_sectorsData = new byte[totalCylinders][][][];
|
|
|
|
// Total sectors per track
|
|
var spts = new uint[totalCylinders][];
|
|
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
Localization.Found_0_cylinders_and_1_heads_with_a_maximum_sector_number_of_2,
|
|
totalCylinders,
|
|
totalHeads,
|
|
maxSector);
|
|
|
|
// Create heads
|
|
for(var i = 0; i < totalCylinders; i++)
|
|
{
|
|
_sectorsData[i] = new byte[totalHeads][][];
|
|
spts[i] = new uint[totalHeads];
|
|
|
|
for(var j = 0; j < totalHeads; j++) _sectorsData[i][j] = new byte[maxSector + 1][];
|
|
}
|
|
|
|
// Decode the image
|
|
stream.Seek(currentPos, SeekOrigin.Begin);
|
|
|
|
while(true)
|
|
{
|
|
var teleDiskTrack = new TrackHeader();
|
|
var tdTrackForCrc = new byte[3];
|
|
|
|
teleDiskTrack.Sectors = (byte)stream.ReadByte();
|
|
teleDiskTrack.Cylinder = (byte)stream.ReadByte();
|
|
teleDiskTrack.Head = (byte)stream.ReadByte();
|
|
teleDiskTrack.Crc = (byte)stream.ReadByte();
|
|
|
|
tdTrackForCrc[0] = teleDiskTrack.Sectors;
|
|
tdTrackForCrc[1] = teleDiskTrack.Cylinder;
|
|
tdTrackForCrc[2] = teleDiskTrack.Head;
|
|
|
|
var tdTrackCalculatedCrc = (byte)(TeleDiskCrc(0, tdTrackForCrc) & 0xFF);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, Localization.Track_follows);
|
|
AaruLogging.Debug(MODULE_NAME, "\t" + Localization.Track_cylinder_0, teleDiskTrack.Cylinder);
|
|
AaruLogging.Debug(MODULE_NAME, "\t" + Localization.Track_head_0, teleDiskTrack.Head);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t" + Localization.Sectors_in_track_0, teleDiskTrack.Sectors);
|
|
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
"\t" + Localization.Track_header_CRC_0_X2_calculated_1_X2,
|
|
teleDiskTrack.Crc,
|
|
tdTrackCalculatedCrc);
|
|
|
|
_aDiskCrcHasFailed |= tdTrackCalculatedCrc != teleDiskTrack.Crc;
|
|
|
|
if(teleDiskTrack.Sectors == 0xFF) // End of disk image
|
|
{
|
|
AaruLogging.Debug(MODULE_NAME, Localization.End_of_disk_image_arrived);
|
|
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
Localization.Total_of_0_data_sectors_for_1_bytes,
|
|
totalSectors,
|
|
_totalDiskSize);
|
|
|
|
break;
|
|
}
|
|
|
|
for(byte processedSectors = 0; processedSectors < teleDiskTrack.Sectors; processedSectors++)
|
|
{
|
|
var teleDiskSector = new SectorHeader();
|
|
var teleDiskData = new DataHeader();
|
|
var dataSizeBytes = new byte[2];
|
|
byte[] decodedData;
|
|
|
|
teleDiskSector.Cylinder = (byte)stream.ReadByte();
|
|
teleDiskSector.Head = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorNumber = (byte)stream.ReadByte();
|
|
teleDiskSector.SectorSize = (byte)stream.ReadByte();
|
|
teleDiskSector.Flags = (byte)stream.ReadByte();
|
|
teleDiskSector.Crc = (byte)stream.ReadByte();
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t" + Localization.Sector_follows);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.AddressMark_cylinder_0, teleDiskSector.Cylinder);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.AddressMark_head_0, teleDiskSector.Head);
|
|
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
"\t\t" + Localization.AddressMark_sector_number_0,
|
|
teleDiskSector.SectorNumber);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.Sector_size_0, teleDiskSector.SectorSize);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.Sector_flags_0_X2, teleDiskSector.Flags);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.Sector_CRC_plus_headers_0_X2, teleDiskSector.Crc);
|
|
|
|
var lba = (uint)(teleDiskSector.Cylinder * _header.Sides * _imageInfo.SectorsPerTrack +
|
|
teleDiskSector.Head * _imageInfo.SectorsPerTrack +
|
|
(teleDiskSector.SectorNumber - 1));
|
|
|
|
if((teleDiskSector.Flags & FLAGS_SECTOR_DATALESS) != FLAGS_SECTOR_DATALESS &&
|
|
(teleDiskSector.Flags & FLAGS_SECTOR_SKIPPED) != FLAGS_SECTOR_SKIPPED)
|
|
{
|
|
stream.EnsureRead(dataSizeBytes, 0, 2);
|
|
teleDiskData.DataSize = BitConverter.ToUInt16(dataSizeBytes, 0);
|
|
teleDiskData.DataSize--; // Sydex decided to including dataEncoding byte as part of it
|
|
_imageInfo.ImageSize += teleDiskData.DataSize;
|
|
teleDiskData.DataEncoding = (byte)stream.ReadByte();
|
|
var data = new byte[teleDiskData.DataSize];
|
|
stream.EnsureRead(data, 0, teleDiskData.DataSize);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.Data_size_in_image_0, teleDiskData.DataSize);
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.Data_encoding_0_X2, teleDiskData.DataEncoding);
|
|
|
|
ErrorNumber errno = DecodeTeleDiskData(teleDiskSector.SectorSize,
|
|
teleDiskData.DataEncoding,
|
|
data,
|
|
out decodedData);
|
|
|
|
if(errno != ErrorNumber.NoError) return errno;
|
|
|
|
var tdSectorCalculatedCrc = (byte)(TeleDiskCrc(0, decodedData) & 0xFF);
|
|
|
|
if(tdSectorCalculatedCrc != teleDiskSector.Crc)
|
|
{
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
Localization.Sector_0_3_4_calculated_CRC_1_X2_differs_from_stored_CRC_2_X2,
|
|
teleDiskTrack.Cylinder,
|
|
tdSectorCalculatedCrc,
|
|
teleDiskSector.Crc,
|
|
teleDiskTrack.Cylinder,
|
|
teleDiskSector.SectorNumber);
|
|
|
|
if((teleDiskSector.Flags & FLAGS_SECTOR_NO_ID) != FLAGS_SECTOR_NO_ID)
|
|
_sectorsWhereCrcHasFailed.Add(lba);
|
|
}
|
|
}
|
|
else
|
|
decodedData = new byte[128 << teleDiskSector.SectorSize];
|
|
|
|
AaruLogging.Debug(MODULE_NAME, "\t\t" + Localization.LBA_0, lba);
|
|
|
|
if((teleDiskSector.Flags & FLAGS_SECTOR_NO_ID) == FLAGS_SECTOR_NO_ID) continue;
|
|
|
|
if(_sectorsData[teleDiskTrack.Cylinder][teleDiskTrack.Head][teleDiskSector.SectorNumber] != null)
|
|
{
|
|
AaruLogging.Debug(MODULE_NAME,
|
|
(teleDiskSector.Flags & FLAGS_SECTOR_DUPLICATE) == FLAGS_SECTOR_DUPLICATE
|
|
? "\t\t" +
|
|
Localization.Sector_0_on_cylinder_1_head_2_is_duplicate_and_marked_so
|
|
: "\t\t" +
|
|
Localization
|
|
.Sector_0_on_cylinder_1_head_2_is_duplicate_but_is_not_marked_so,
|
|
teleDiskSector.SectorNumber,
|
|
teleDiskSector.Cylinder,
|
|
teleDiskSector.Head);
|
|
}
|
|
else
|
|
{
|
|
_sectorsData[teleDiskTrack.Cylinder][teleDiskTrack.Head][teleDiskSector.SectorNumber] = decodedData;
|
|
|
|
_totalDiskSize += (uint)decodedData.Length;
|
|
}
|
|
}
|
|
}
|
|
|
|
var leadOutMs = new MemoryStream();
|
|
|
|
if(hasLeadOutOnHead0)
|
|
{
|
|
for(var i = 0; i < _sectorsData[totalCylinders - 1][0].Length; i++)
|
|
{
|
|
if(_sectorsData[totalCylinders - 1][0][i] != null)
|
|
{
|
|
leadOutMs.Write(_sectorsData[totalCylinders - 1][0][i],
|
|
0,
|
|
_sectorsData[totalCylinders - 1][0][i].Length);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(hasLeadOutOnHead1)
|
|
{
|
|
for(var i = 0; i < _sectorsData[totalCylinders - 1][1].Length; i++)
|
|
{
|
|
if(_sectorsData[totalCylinders - 1][1][i] != null)
|
|
{
|
|
leadOutMs.Write(_sectorsData[totalCylinders - 1][1][i],
|
|
0,
|
|
_sectorsData[totalCylinders - 1][1][i].Length);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(leadOutMs.Length != 0)
|
|
{
|
|
_leadOut = leadOutMs.ToArray();
|
|
_imageInfo.ReadableMediaTags.Add(MediaTagType.Floppy_LeadOut);
|
|
}
|
|
|
|
_imageInfo.Sectors = _imageInfo.Cylinders * _imageInfo.Heads * _imageInfo.SectorsPerTrack;
|
|
_imageInfo.MediaType = DecodeTeleDiskDiskType();
|
|
|
|
_imageInfo.MetadataMediaType = MetadataMediaType.BlockMedia;
|
|
|
|
AaruLogging.Verbose(Localization.TeleDisk_image_contains_a_disk_of_type_0, _imageInfo.MediaType);
|
|
|
|
if(!string.IsNullOrEmpty(_imageInfo.Comments))
|
|
AaruLogging.Verbose(Localization.TeleDisk_comments_0, _imageInfo.Comments);
|
|
|
|
_inStream.Dispose();
|
|
stream.Dispose();
|
|
|
|
return ErrorNumber.NoError;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber ReadSector(ulong sectorAddress, bool negative, out byte[] buffer, out SectorStatus sectorStatus)
|
|
{
|
|
buffer = null;
|
|
sectorStatus = SectorStatus.NotDumped;
|
|
(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
|
|
|
|
if(negative) return ErrorNumber.NotSupported;
|
|
|
|
if(cylinder >= _sectorsData.Length) return ErrorNumber.SectorNotFound;
|
|
|
|
if(head >= _sectorsData[cylinder].Length) return ErrorNumber.SectorNotFound;
|
|
|
|
if(sector > _sectorsData[cylinder][head].Length) return ErrorNumber.SectorNotFound;
|
|
|
|
buffer = _sectorsData[cylinder][head][sector];
|
|
sectorStatus = SectorStatus.Dumped;
|
|
|
|
return ErrorNumber.NoError;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber ReadSectors(ulong sectorAddress, bool negative, uint length, out byte[] buffer,
|
|
out SectorStatus[] sectorStatus)
|
|
{
|
|
buffer = null;
|
|
sectorStatus = null;
|
|
|
|
if(negative) return ErrorNumber.NotSupported;
|
|
|
|
if(sectorAddress > _imageInfo.Sectors - 1) return ErrorNumber.OutOfRange;
|
|
|
|
if(sectorAddress + length > _imageInfo.Sectors) return ErrorNumber.OutOfRange;
|
|
|
|
var ms = new MemoryStream();
|
|
sectorStatus = new SectorStatus[length];
|
|
|
|
for(uint i = 0; i < length; i++)
|
|
{
|
|
ErrorNumber errno = ReadSector(sectorAddress + i, false, out byte[] sector, out SectorStatus status);
|
|
|
|
if(errno != ErrorNumber.NoError) return errno;
|
|
|
|
// Sector not in image
|
|
if(sector is null)
|
|
{
|
|
sectorStatus[i] = SectorStatus.NotDumped;
|
|
|
|
continue;
|
|
}
|
|
|
|
ms.Write(sector, 0, sector.Length);
|
|
sectorStatus[i] = status;
|
|
}
|
|
|
|
buffer = ms.ToArray();
|
|
|
|
return ErrorNumber.NoError;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber ReadSectorLong(ulong sectorAddress, bool negative, out byte[] buffer,
|
|
out SectorStatus sectorStatus)
|
|
{
|
|
sectorStatus = SectorStatus.Dumped;
|
|
|
|
return ReadSectors(sectorAddress, negative, 1, out buffer, out _);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber ReadSectorsLong(ulong sectorAddress, bool negative, uint length, out byte[] buffer,
|
|
out SectorStatus[] sectorStatus) =>
|
|
ReadSectors(sectorAddress, negative, length, out buffer, out sectorStatus);
|
|
|
|
/// <inheritdoc />
|
|
public ErrorNumber ReadMediaTag(MediaTagType tag, out byte[] buffer)
|
|
{
|
|
buffer = null;
|
|
|
|
if(tag != MediaTagType.Floppy_LeadOut) return ErrorNumber.NotSupported;
|
|
|
|
buffer = _leadOut?.Clone() as byte[];
|
|
|
|
return buffer != null ? ErrorNumber.NoError : ErrorNumber.NoData;
|
|
}
|
|
|
|
#endregion
|
|
} |