public bool Open(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
byte[] buffer = new byte[0x58];
byte[] pString = new byte[64];
stream.Read(buffer, 0, 0x58);
IsWriting = false;
// Incorrect pascal string length, not DC42
if (buffer[0] > 63)
{
return(false);
}
header = new Dc42Header();
Array.Copy(buffer, 0, pString, 0, 64);
header.DiskName = StringHandlers.PascalToString(pString, Encoding.GetEncoding("macintosh"));
header.DataSize = BigEndianBitConverter.ToUInt32(buffer, 0x40);
header.TagSize = BigEndianBitConverter.ToUInt32(buffer, 0x44);
header.DataChecksum = BigEndianBitConverter.ToUInt32(buffer, 0x48);
header.TagChecksum = BigEndianBitConverter.ToUInt32(buffer, 0x4C);
header.Format = buffer[0x50];
header.FmtByte = buffer[0x51];
header.Valid = buffer[0x52];
header.Reserved = buffer[0x53];
AaruConsole.DebugWriteLine("DC42 plugin", "header.diskName = \"{0}\"", header.DiskName);
AaruConsole.DebugWriteLine("DC42 plugin", "header.dataSize = {0} bytes", header.DataSize);
AaruConsole.DebugWriteLine("DC42 plugin", "header.tagSize = {0} bytes", header.TagSize);
AaruConsole.DebugWriteLine("DC42 plugin", "header.dataChecksum = 0x{0:X8}", header.DataChecksum);
AaruConsole.DebugWriteLine("DC42 plugin", "header.tagChecksum = 0x{0:X8}", header.TagChecksum);
AaruConsole.DebugWriteLine("DC42 plugin", "header.format = 0x{0:X2}", header.Format);
AaruConsole.DebugWriteLine("DC42 plugin", "header.fmtByte = 0x{0:X2}", header.FmtByte);
AaruConsole.DebugWriteLine("DC42 plugin", "header.valid = {0}", header.Valid);
AaruConsole.DebugWriteLine("DC42 plugin", "header.reserved = {0}", header.Reserved);
if (header.Valid != 1 ||
header.Reserved != 0)
{
return(false);
}
// Some versions seem to incorrectly create little endian fields
if (header.DataSize + header.TagSize + 0x54 != imageFilter.GetDataForkLength() &&
header.Format != kSigmaFormatTwiggy)
{
header.DataSize = BitConverter.ToUInt32(buffer, 0x40);
header.TagSize = BitConverter.ToUInt32(buffer, 0x44);
header.DataChecksum = BitConverter.ToUInt32(buffer, 0x48);
header.TagChecksum = BitConverter.ToUInt32(buffer, 0x4C);
if (header.DataSize + header.TagSize + 0x54 != imageFilter.GetDataForkLength() &&
header.Format != kSigmaFormatTwiggy)
{
return(false);
}
}
if (header.Format != kSonyFormat400K &&
header.Format != kSonyFormat800K &&
header.Format != kSonyFormat720K &&
header.Format != kSonyFormat1440K &&
header.Format != kSonyFormat1680K &&
header.Format != kSigmaFormatTwiggy &&
header.Format != kNotStandardFormat)
{
AaruConsole.DebugWriteLine("DC42 plugin", "Unknown header.format = 0x{0:X2} value", header.Format);
return(false);
}
if (header.FmtByte != kSonyFmtByte400K &&
header.FmtByte != kSonyFmtByte800K &&
header.FmtByte != kSonyFmtByte800KIncorrect &&
header.FmtByte != kSonyFmtByteProDos &&
header.FmtByte != kInvalidFmtByte &&
header.FmtByte != kSigmaFmtByteTwiggy &&
header.FmtByte != kFmtNotStandard &&
header.FmtByte != kMacOSXFmtByte)
{
AaruConsole.DebugWriteLine("DC42 plugin", "Unknown tmp_header.fmtByte = 0x{0:X2} value",
header.FmtByte);
return(false);
}
if (header.FmtByte == kInvalidFmtByte)
{
AaruConsole.DebugWriteLine("DC42 plugin", "Image says it's unformatted");
return(false);
}
dataOffset = 0x54;
tagOffset = header.TagSize != 0 ? 0x54 + header.DataSize : 0;
imageInfo.SectorSize = 512;
bptag = (uint)(header.TagSize != 0 ? 12 : 0);
dc42ImageFilter = imageFilter;
imageInfo.Sectors = header.DataSize / 512;
if (header.TagSize != 0)
{
bptag = (uint)(header.TagSize / imageInfo.Sectors);
AaruConsole.DebugWriteLine("DC42 plugin", "bptag = {0} bytes", bptag);
if (bptag != 12 &&
bptag != 20 &&
bptag != 24)
{
AaruConsole.DebugWriteLine("DC42 plugin", "Unknown tag size");
return(false);
}
imageInfo.ReadableSectorTags.Add(SectorTagType.AppleSectorTag);
}
imageInfo.ImageSize = (imageInfo.Sectors * imageInfo.SectorSize) + (imageInfo.Sectors * bptag);
imageInfo.CreationTime = imageFilter.GetCreationTime();
imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
imageInfo.MediaTitle = header.DiskName;
switch (header.Format)
{
case kSonyFormat400K:
imageInfo.MediaType = imageInfo.Sectors == 1600 ? MediaType.AppleSonyDS : MediaType.AppleSonySS;
break;
case kSonyFormat800K:
imageInfo.MediaType = MediaType.AppleSonyDS;
break;
case kSonyFormat720K:
imageInfo.MediaType = MediaType.DOS_35_DS_DD_9;
break;
case kSonyFormat1440K:
imageInfo.MediaType = MediaType.DOS_35_HD;
break;
case kSonyFormat1680K:
imageInfo.MediaType = MediaType.DMF;
break;
case kSigmaFormatTwiggy:
imageInfo.MediaType = MediaType.AppleFileWare;
break;
case kNotStandardFormat:
switch (imageInfo.Sectors)
{
case 9728:
imageInfo.MediaType = MediaType.AppleProfile;
break;
case 19456:
imageInfo.MediaType = MediaType.AppleProfile;
break;
case 38912:
imageInfo.MediaType = MediaType.AppleWidget;
break;
case 39040:
imageInfo.MediaType = MediaType.AppleHD20;
break;
default:
imageInfo.MediaType = MediaType.Unknown;
break;
}
break;
default:
imageInfo.MediaType = MediaType.Unknown;
break;
}
if (imageInfo.MediaType == MediaType.AppleFileWare)
{
byte[] data = new byte[header.DataSize];
byte[] tags = new byte[header.TagSize];
twiggyCache = new byte[header.DataSize];
twiggyCacheTags = new byte[header.TagSize];
twiggy = true;
Stream datastream = imageFilter.GetDataForkStream();
datastream.Seek(dataOffset, SeekOrigin.Begin);
datastream.Read(data, 0, (int)header.DataSize);
Stream tagstream = imageFilter.GetDataForkStream();
tagstream.Seek(tagOffset, SeekOrigin.Begin);
tagstream.Read(tags, 0, (int)header.TagSize);
ushort mfsMagic = BigEndianBitConverter.ToUInt16(data, (data.Length / 2) + 0x400);
ushort mfsAllBlocks = BigEndianBitConverter.ToUInt16(data, (data.Length / 2) + 0x412);
// Detect a Macintosh Twiggy
if (mfsMagic == 0xD2D7 &&
mfsAllBlocks == 422)
{
AaruConsole.DebugWriteLine("DC42 plugin", "Macintosh Twiggy detected, reversing disk sides");
Array.Copy(data, header.DataSize / 2, twiggyCache, 0, header.DataSize / 2);
Array.Copy(tags, header.TagSize / 2, twiggyCacheTags, 0, header.TagSize / 2);
Array.Copy(data, 0, twiggyCache, header.DataSize / 2, header.DataSize / 2);
Array.Copy(tags, 0, twiggyCacheTags, header.TagSize / 2, header.TagSize / 2);
}
else
{
AaruConsole.DebugWriteLine("DC42 plugin", "Lisa Twiggy detected, reversing second half of disk");
Array.Copy(data, 0, twiggyCache, 0, header.DataSize / 2);
Array.Copy(tags, 0, twiggyCacheTags, 0, header.TagSize / 2);
int copiedSectors = 0;
int sectorsToCopy = 0;
for (int i = 0; i < 46; i++)
{
if (i >= 0 &&
i <= 3)
{
sectorsToCopy = 22;
}
if (i >= 4 &&
i <= 10)
{
sectorsToCopy = 21;
}
if (i >= 11 &&
i <= 16)
{
sectorsToCopy = 20;
}
if (i >= 17 &&
i <= 22)
{
sectorsToCopy = 19;
}
if (i >= 23 &&
i <= 28)
{
sectorsToCopy = 18;
}
if (i >= 29 &&
i <= 34)
{
sectorsToCopy = 17;
}
if (i >= 35 &&
i <= 41)
{
sectorsToCopy = 16;
}
if (i >= 42 &&
i <= 45)
{
sectorsToCopy = 15;
}
Array.Copy(data, (header.DataSize / 2) + (copiedSectors * 512), twiggyCache,
twiggyCache.Length - (copiedSectors * 512) - (sectorsToCopy * 512),
sectorsToCopy * 512);
Array.Copy(tags, (header.TagSize / 2) + (copiedSectors * bptag), twiggyCacheTags,
twiggyCacheTags.Length - (copiedSectors * bptag) - (sectorsToCopy * bptag),
sectorsToCopy * bptag);
copiedSectors += sectorsToCopy;
}
}
}
try
{
if (imageFilter.HasResourceFork())
{
var rsrcFork = new ResourceFork(imageFilter.GetResourceForkStream());
if (rsrcFork.ContainsKey(0x76657273))
{
Resource versRsrc = rsrcFork.GetResource(0x76657273);
byte[] vers = versRsrc?.GetResource(versRsrc.GetIds()[0]);
if (vers != null)
{
var version = new Version(vers);
string release = null;
string dev = null;
string pre = null;
string major = $"{version.MajorVersion}";
string minor = $".{version.MinorVersion / 10}";
if (version.MinorVersion % 10 > 0)
{
release = $".{version.MinorVersion % 10}";
}
switch (version.DevStage)
{
case Version.DevelopmentStage.Alpha:
dev = "a";
break;
case Version.DevelopmentStage.Beta:
dev = "b";
break;
case Version.DevelopmentStage.PreAlpha:
dev = "d";
break;
}
if (dev == null &&
version.PreReleaseVersion > 0)
{
dev = "f";
}
if (dev != null)
{
pre = $"{version.PreReleaseVersion}";
}
imageInfo.ApplicationVersion = $"{major}{minor}{release}{dev}{pre}";
imageInfo.Application = version.VersionString;
imageInfo.Comments = version.VersionMessage;
}
}
if (rsrcFork.ContainsKey(0x64437079))
{
Resource dCpyRsrc = rsrcFork.GetResource(0x64437079);
if (dCpyRsrc != null)
{
string dCpy = StringHandlers.PascalToString(dCpyRsrc.GetResource(dCpyRsrc.GetIds()[0]),
Encoding.GetEncoding("macintosh"));
var dCpyEx = new Regex(REGEX_DCPY);
Match dCpyMatch = dCpyEx.Match(dCpy);
if (dCpyMatch.Success)
{
imageInfo.Application = dCpyMatch.Groups["application"].Value;
imageInfo.ApplicationVersion = dCpyMatch.Groups["version"].Value;
}
}
}
}
}
catch (InvalidCastException) {}
AaruConsole.DebugWriteLine("DC42 plugin", "Image application = {0} version {1}", imageInfo.Application,
imageInfo.ApplicationVersion);
imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
AaruConsole.VerboseWriteLine("DiskCopy 4.2 image contains a disk of type {0}", imageInfo.MediaType);
switch (imageInfo.MediaType)
{
case MediaType.AppleSonySS:
imageInfo.Cylinders = 80;
imageInfo.Heads = 1;
imageInfo.SectorsPerTrack = 10;
break;
case MediaType.AppleSonyDS:
imageInfo.Cylinders = 80;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 10;
break;
case MediaType.DOS_35_DS_DD_9:
imageInfo.Cylinders = 80;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 9;
break;
case MediaType.DOS_35_HD:
imageInfo.Cylinders = 80;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 18;
break;
case MediaType.DMF:
imageInfo.Cylinders = 80;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 21;
break;
case MediaType.AppleProfile:
switch (imageInfo.Sectors)
{
case 9728:
imageInfo.Cylinders = 152;
break;
case 19456:
imageInfo.Cylinders = 304;
break;
}
imageInfo.Heads = 4;
imageInfo.SectorsPerTrack = 16;
break;
case MediaType.AppleWidget:
imageInfo.Cylinders = 608;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 16;
break;
case MediaType.AppleHD20:
imageInfo.Cylinders = 610;
imageInfo.Heads = 2;
imageInfo.SectorsPerTrack = 16;
break;
default:
imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
imageInfo.Heads = 16;
imageInfo.SectorsPerTrack = 63;
break;
}
return(true);
}
public bool Create(string path, MediaType mediaType, Dictionary <string, string> options, ulong sectors,
uint sectorSize)
{
header = new Dc42Header();
bool tags = false;
bool macosx = false;
if (options != null &&
options.TryGetValue("macosx", out string tmpOption))
{
bool.TryParse(tmpOption, out macosx);
}
if (sectorSize != 512)
{
ErrorMessage = "Unsupported sector size";
return(false);
}
switch (mediaType)
{
case MediaType.AppleFileWare:
header.FmtByte = kSigmaFmtByteTwiggy;
header.Format = kSigmaFormatTwiggy;
twiggy = true;
// TODO
ErrorMessage = "Twiggy write support not yet implemented";
return(false);
case MediaType.AppleHD20:
if (sectors != 39040)
{
ErrorMessage = "Incorrect number of sectors for Apple HD20 image";
return(false);
}
header.FmtByte = kFmtNotStandard;
header.Format = kNotStandardFormat;
tags = true;
break;
case MediaType.AppleProfile:
if (sectors != 9728 &&
sectors != 19456)
{
ErrorMessage = "Incorrect number of sectors for Apple Profile image";
return(false);
}
header.FmtByte = kFmtNotStandard;
header.Format = kNotStandardFormat;
tags = true;
break;
case MediaType.AppleSonyDS:
if (sectors != 1600)
{
ErrorMessage = "Incorrect number of sectors for Apple MF2DD image";
return(false);
}
header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte800K;
header.Format = kSonyFormat800K;
tags = true;
break;
case MediaType.AppleSonySS:
if (sectors != 800)
{
ErrorMessage = "Incorrect number of sectors for Apple MF1DD image";
return(false);
}
header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte400K;
header.Format = kSonyFormat400K;
tags = true;
break;
case MediaType.AppleWidget:
if (sectors != 39040)
{
ErrorMessage = "Incorrect number of sectors for Apple Widget image";
return(false);
}
header.FmtByte = kFmtNotStandard;
header.Format = kNotStandardFormat;
tags = true;
break;
case MediaType.DOS_35_DS_DD_9:
if (sectors != 1440)
{
ErrorMessage = "Incorrect number of sectors for MF2DD image";
return(false);
}
header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte720K;
header.Format = kSonyFormat720K;
break;
case MediaType.DOS_35_HD:
if (sectors != 2880)
{
ErrorMessage = "Incorrect number of sectors for MF2HD image";
return(false);
}
header.Format = kSonyFmtByte1440K;
header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte1440K;
break;
case MediaType.DMF:
if (sectors != 3360)
{
ErrorMessage = "Incorrect number of sectors for DMF image";
return(false);
}
header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte1680K;
header.Format = kSonyFormat1680K;
break;
default:
ErrorMessage = $"Unsupport media format {mediaType}";
return(false);
}
dataOffset = 0x54;
tagOffset = header.TagSize != 0 ? 0x54 + header.DataSize : 0;
header.DiskName = "-Aaru converted image-";
header.Valid = 1;
header.DataSize = (uint)(sectors * 512);
if (tags)
{
header.TagSize = (uint)(sectors * 12);
}
imageInfo = new ImageInfo
{
MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors
};
try
{
writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
}
catch (IOException e)
{
ErrorMessage = $"Could not create new image file, exception {e.Message}";
return(false);
}
IsWriting = true;
ErrorMessage = null;
return(true);
}
public bool Identify(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
byte[] buffer = new byte[0x58];
byte[] pString = new byte[64];
stream.Read(buffer, 0, 0x58);
// Incorrect pascal string length, not DC42
if (buffer[0] > 63)
{
return(false);
}
Dc42Header tmpHeader = new Dc42Header();
Array.Copy(buffer, 0, pString, 0, 64);
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
tmpHeader.DiskName = StringHandlers.PascalToString(pString, Encoding.GetEncoding("macintosh"));
tmpHeader.DataSize = BigEndianBitConverter.ToUInt32(buffer, 0x40);
tmpHeader.TagSize = BigEndianBitConverter.ToUInt32(buffer, 0x44);
tmpHeader.DataChecksum = BigEndianBitConverter.ToUInt32(buffer, 0x48);
tmpHeader.TagChecksum = BigEndianBitConverter.ToUInt32(buffer, 0x4C);
tmpHeader.Format = buffer[0x50];
tmpHeader.FmtByte = buffer[0x51];
tmpHeader.Valid = buffer[0x52];
tmpHeader.Reserved = buffer[0x53];
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.diskName = \"{0}\"", tmpHeader.DiskName);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.dataSize = {0} bytes", tmpHeader.DataSize);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.tagSize = {0} bytes", tmpHeader.TagSize);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.dataChecksum = 0x{0:X8}", tmpHeader.DataChecksum);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.tagChecksum = 0x{0:X8}", tmpHeader.TagChecksum);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.format = 0x{0:X2}", tmpHeader.Format);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.fmtByte = 0x{0:X2}", tmpHeader.FmtByte);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.valid = {0}", tmpHeader.Valid);
DicConsole.DebugWriteLine("DC42 plugin", "tmp_header.reserved = {0}", tmpHeader.Reserved);
if (tmpHeader.Valid != 1 || tmpHeader.Reserved != 0)
{
return(false);
}
// Some versions seem to incorrectly create little endian fields
if (tmpHeader.DataSize + tmpHeader.TagSize + 0x54 != imageFilter.GetDataForkLength() &&
tmpHeader.Format != kSigmaFormatTwiggy)
{
tmpHeader.DataSize = BitConverter.ToUInt32(buffer, 0x40);
tmpHeader.TagSize = BitConverter.ToUInt32(buffer, 0x44);
tmpHeader.DataChecksum = BitConverter.ToUInt32(buffer, 0x48);
tmpHeader.TagChecksum = BitConverter.ToUInt32(buffer, 0x4C);
if (tmpHeader.DataSize + tmpHeader.TagSize + 0x54 != imageFilter.GetDataForkLength() &&
tmpHeader.Format != kSigmaFormatTwiggy)
{
return(false);
}
}
if (tmpHeader.Format != kSonyFormat400K && tmpHeader.Format != kSonyFormat800K &&
tmpHeader.Format != kSonyFormat720K && tmpHeader.Format != kSonyFormat1440K &&
tmpHeader.Format != kSonyFormat1680K && tmpHeader.Format != kSigmaFormatTwiggy &&
tmpHeader.Format != kNotStandardFormat)
{
DicConsole.DebugWriteLine("DC42 plugin", "Unknown tmp_header.format = 0x{0:X2} value",
tmpHeader.Format);
return(false);
}
if (tmpHeader.FmtByte != kSonyFmtByte400K && tmpHeader.FmtByte != kSonyFmtByte800K &&
tmpHeader.FmtByte != kSonyFmtByte800KIncorrect && tmpHeader.FmtByte != kSonyFmtByteProDos &&
tmpHeader.FmtByte != kInvalidFmtByte && tmpHeader.FmtByte != kSigmaFmtByteTwiggy &&
tmpHeader.FmtByte != kFmtNotStandard && tmpHeader.FmtByte != kMacOSXFmtByte)
{
DicConsole.DebugWriteLine("DC42 plugin", "Unknown tmp_header.fmtByte = 0x{0:X2} value",
tmpHeader.FmtByte);
return(false);
}
if (tmpHeader.FmtByte != kInvalidFmtByte)
{
return(true);
}
DicConsole.DebugWriteLine("DC42 plugin", "Image says it's unformatted");
return(false);
}
