public bool Create(string path, MediaType mediaType, Dictionary <string, string> options, ulong sectors,
uint sectorSize)
{
if (sectorSize == 0)
{
ErrorMessage = "Unsupported sector size";
return(false);
}
if (sectors > ushort.MaxValue)
{
ErrorMessage = "Too many sectors";
return(false);
}
if (!SupportedMediaTypes.Contains(mediaType))
{
ErrorMessage = $"Unsupport media format {mediaType}";
return(false);
}
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);
}
// TODO: Check this
(ushort cylinders, byte heads, ushort sectorsPerTrack, uint bytesPerSector, MediaEncoding encoding, bool
variableSectorsPerTrack, MediaType type)geometry = Geometry.GetGeometry(mediaType);
footer = new DriFooter
{
signature = new byte[51],
bpb = new DriBpb
{
five = 5,
driveCode = DriDriveCodes.mf2ed,
cylinders = geometry.cylinders,
bps = (ushort)imageInfo.SectorSize,
sectors = (ushort)imageInfo.Sectors,
sptrack = (ushort)imageInfo.SectorsPerTrack,
heads = (ushort)imageInfo.Heads,
sptrack2 = (ushort)imageInfo.SectorsPerTrack,
unknown5 = new byte[144]
}
};
Array.Copy(Encoding.ASCII.GetBytes("DiskImage 2.01 (C) 1990,1991 Digital Research Inc"), 0,
footer.signature, 0, 49);
footer.bpbcopy = footer.bpb;
IsWriting = true;
ErrorMessage = null;
return(true);
}
public bool Identify(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
if ((stream.Length - Marshal.SizeOf <DriFooter>()) % 512 != 0)
{
return(false);
}
byte[] buffer = new byte[Marshal.SizeOf <DriFooter>()];
stream.Seek(-buffer.Length, SeekOrigin.End);
stream.Read(buffer, 0, buffer.Length);
DriFooter tmpFooter = Marshal.ByteArrayToStructureLittleEndian <DriFooter>(buffer);
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(REGEX_DRI);
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);
}
return(tmpFooter.bpb.sectors * tmpFooter.bpb.bps + Marshal.SizeOf <DriFooter>() == stream.Length);
}
public bool Open(IFilter 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(REGEX_DRI);
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.ApplicationVersion = matchSignature.Groups["version"].Value;
driImageFilter = imageFilter;
imageInfo.ImageSize = (ulong)(stream.Length - Marshal.SizeOf(footer));
imageInfo.CreationTime = imageFilter.GetCreationTime();
imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
DicConsole.DebugWriteLine("DRI DiskCopy plugin", "Image application = {0} version {1}",
imageInfo.Application, imageInfo.ApplicationVersion);
// 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;
}
imageInfo.MediaType = Geometry.GetMediaType(((ushort)imageInfo.Cylinders, (byte)imageInfo.Heads,
(ushort)imageInfo.SectorsPerTrack, imageInfo.SectorSize,
MediaEncoding.MFM, false));
switch (imageInfo.MediaType)
{
case MediaType.NEC_525_HD when footer.bpb.driveCode == DriDriveCodes.mf2hd ||
footer.bpb.driveCode == DriDriveCodes.mf2ed:
imageInfo.MediaType = MediaType.NEC_35_HD_8;
break;
case MediaType.DOS_525_HD when footer.bpb.driveCode == DriDriveCodes.mf2hd ||
footer.bpb.driveCode == DriDriveCodes.mf2ed:
imageInfo.MediaType = MediaType.NEC_35_HD_15;
break;
case MediaType.RX50 when footer.bpb.driveCode == DriDriveCodes.md2dd ||
footer.bpb.driveCode == DriDriveCodes.md2hd:
imageInfo.MediaType = MediaType.ATARI_35_SS_DD;
break;
}
imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
DicConsole.VerboseWriteLine("Digital Research DiskCopy image contains a disk of type {0}",
imageInfo.MediaType);
return(true);
}
