/// <summary>
/// Reads, interprets and caches the Catalog File
/// </summary>
Errno ReadCatalog()
{
if (!mounted)
{
return(Errno.AccessDenied);
}
catalogCache = new List <CatalogEntry>();
// Do differently for V1 and V2
if (mddf.fsversion == LISA_V2 || mddf.fsversion == LISA_V1)
{
Errno error = ReadFile((short)FILEID_CATALOG, out byte[] buf);
if (error != Errno.NoError)
{
return(error);
}
int offset = 0;
List <CatalogEntryV2> catalogV2 = new List <CatalogEntryV2>();
// For each entry on the catalog
while (offset + 54 < buf.Length)
{
CatalogEntryV2 entV2 = new CatalogEntryV2
{
filenameLen = buf[offset],
filename = new byte[E_NAME],
unknown1 = buf[offset + 0x21],
fileType = buf[offset + 0x22],
unknown2 = buf[offset + 0x23],
fileID = BigEndianBitConverter.ToInt16(buf, offset + 0x24),
unknown3 = new byte[16]
};
Array.Copy(buf, offset + 0x01, entV2.filename, 0, E_NAME);
Array.Copy(buf, offset + 0x26, entV2.unknown3, 0, 16);
offset += 54;
// Check that the entry is correct, not empty or garbage
if (entV2.filenameLen != 0 && entV2.filenameLen <= E_NAME && entV2.fileType != 0 && entV2.fileID > 0)
{
catalogV2.Add(entV2);
}
}
// Convert entries to V3 format
foreach (CatalogEntryV2 entV2 in catalogV2)
{
error = ReadExtentsFile(entV2.fileID, out ExtentFile ext);
if (error != Errno.NoError)
{
continue;
}
CatalogEntry entV3 = new CatalogEntry
{
fileID = entV2.fileID,
filename = new byte[32],
fileType = entV2.fileType,
length = (int)srecords[entV2.fileID].filesize,
dtc = ext.dtc,
dtm = ext.dtm
};
Array.Copy(entV2.filename, 0, entV3.filename, 0, entV2.filenameLen);
catalogCache.Add(entV3);
}
return(Errno.NoError);
}
byte[] firstCatalogBlock = null;
// Search for the first sector describing the catalog
// While root catalog is not stored in S-Records, probably rest are? (unchecked)
// If root catalog is not pointed in MDDF (unchecked) maybe it's always following S-Records File?
for (ulong i = 0; i < device.Info.Sectors; i++)
{
DecodeTag(device.ReadSectorTag(i, SectorTagType.AppleSectorTag), out LisaTag.PriamTag catTag);
if (catTag.FileId != FILEID_CATALOG || catTag.RelPage != 0)
{
continue;
}
firstCatalogBlock = device.ReadSectors(i, 4);
break;
}
// Catalog not found
if (firstCatalogBlock == null)
{
return(Errno.NoSuchFile);
}
ulong prevCatalogPointer;
prevCatalogPointer = BigEndianBitConverter.ToUInt32(firstCatalogBlock, 0x7F6);
// Traverse double-linked list until first catalog block
while (prevCatalogPointer != 0xFFFFFFFF)
{
DecodeTag(device.ReadSectorTag(prevCatalogPointer + mddf.mddf_block + volumePrefix, SectorTagType.AppleSectorTag),
out LisaTag.PriamTag prevTag);
if (prevTag.FileId != FILEID_CATALOG)
{
return(Errno.InvalidArgument);
}
firstCatalogBlock = device.ReadSectors(prevCatalogPointer + mddf.mddf_block + volumePrefix, 4);
prevCatalogPointer = BigEndianBitConverter.ToUInt32(firstCatalogBlock, 0x7F6);
}
ulong nextCatalogPointer;
nextCatalogPointer = BigEndianBitConverter.ToUInt32(firstCatalogBlock, 0x7FA);
List <byte[]> catalogBlocks = new List <byte[]> {
firstCatalogBlock
};
// Traverse double-linked list to read full catalog
while (nextCatalogPointer != 0xFFFFFFFF)
{
DecodeTag(device.ReadSectorTag(nextCatalogPointer + mddf.mddf_block + volumePrefix, SectorTagType.AppleSectorTag),
out LisaTag.PriamTag nextTag);
if (nextTag.FileId != FILEID_CATALOG)
{
return(Errno.InvalidArgument);
}
byte[] nextCatalogBlock = device.ReadSectors(nextCatalogPointer + mddf.mddf_block + volumePrefix, 4);
nextCatalogPointer = BigEndianBitConverter.ToUInt32(nextCatalogBlock, 0x7FA);
catalogBlocks.Add(nextCatalogBlock);
}
// Foreach catalog block
foreach (byte[] buf in catalogBlocks)
{
int offset = 0;
// Traverse all entries
while (offset + 64 <= buf.Length)
{
// Catalog block header
if (buf[offset + 0x24] == 0x08)
{
offset += 78;
}
// Maybe just garbage? Found in more than 1 disk
else if (buf[offset + 0x24] == 0x7C)
{
offset += 50;
}
// Apparently reserved to indicate end of catalog?
else if (buf[offset + 0x24] == 0xFF)
{
break;
}
// Normal entry
else if (buf[offset + 0x24] == 0x03 && buf[offset] == 0x24)
{
CatalogEntry entry = new CatalogEntry
{
marker = buf[offset],
parentID = BigEndianBitConverter.ToUInt16(buf, offset + 0x01),
filename = new byte[E_NAME],
terminator = buf[offset + 0x23],
fileType = buf[offset + 0x24],
unknown = buf[offset + 0x25],
fileID = BigEndianBitConverter.ToInt16(buf, offset + 0x26),
dtc = BigEndianBitConverter.ToUInt32(buf, offset + 0x28),
dtm = BigEndianBitConverter.ToUInt32(buf, offset + 0x2C),
length = BigEndianBitConverter.ToInt32(buf, offset + 0x30),
wasted = BigEndianBitConverter.ToInt32(buf, offset + 0x34),
tail = new byte[8]
};
Array.Copy(buf, offset + 0x03, entry.filename, 0, E_NAME);
Array.Copy(buf, offset + 0x38, entry.tail, 0, 8);
if (ReadExtentsFile(entry.fileID, out _) == Errno.NoError)
{
if (!fileSizeCache.ContainsKey(entry.fileID))
{
catalogCache.Add(entry);
fileSizeCache.Add(entry.fileID, entry.length);
}
}
offset += 64;
}
// Subdirectory entry
else if (buf[offset + 0x24] == 0x01 && buf[offset] == 0x24)
{
CatalogEntry entry = new CatalogEntry
{
marker = buf[offset],
parentID = BigEndianBitConverter.ToUInt16(buf, offset + 0x01),
filename = new byte[E_NAME],
terminator = buf[offset + 0x23],
fileType = buf[offset + 0x24],
unknown = buf[offset + 0x25],
fileID = BigEndianBitConverter.ToInt16(buf, offset + 0x26),
dtc = BigEndianBitConverter.ToUInt32(buf, offset + 0x28),
dtm = BigEndianBitConverter.ToUInt32(buf, offset + 0x2C),
length = 0,
wasted = 0,
tail = null
};
Array.Copy(buf, offset + 0x03, entry.filename, 0, E_NAME);
if (!directoryDtcCache.ContainsKey(entry.fileID))
{
directoryDtcCache.Add(entry.fileID, DateHandlers.LisaToDateTime(entry.dtc));
}
catalogCache.Add(entry);
offset += 48;
}
else
{
break;
}
}
}
return(Errno.NoError);
}
Errno Stat(short fileId, out FileEntryInfo stat)
{
stat = null;
if (!_mounted)
{
return(Errno.AccessDenied);
}
Errno error;
ExtentFile file;
if (fileId <= 4)
{
if (!_debug ||
fileId == 0)
{
return(Errno.NoSuchFile);
}
else
{
stat = new FileEntryInfo();
error = GetAttributes(fileId, out FileAttributes attrs);
stat.Attributes = attrs;
if (error != Errno.NoError)
{
return(error);
}
if (fileId < 0 &&
fileId != FILEID_BOOT_SIGNED &&
fileId != FILEID_LOADER_SIGNED)
{
error = ReadExtentsFile((short)(fileId * -1), out file);
if (error != Errno.NoError)
{
return(error);
}
stat.CreationTime = DateHandlers.LisaToDateTime(file.dtc);
stat.AccessTime = DateHandlers.LisaToDateTime(file.dta);
stat.BackupTime = DateHandlers.LisaToDateTime(file.dtb);
stat.LastWriteTime = DateHandlers.LisaToDateTime(file.dtm);
stat.Inode = (ulong)fileId;
stat.Links = 0;
stat.Length = _mddf.datasize;
stat.BlockSize = _mddf.datasize;
stat.Blocks = 1;
}
else
{
error = ReadSystemFile(fileId, out byte[] buf);
if (error != Errno.NoError)
{
return(error);
}
stat.CreationTime = fileId != 4 ? _mddf.dtvc : _mddf.dtcc;
stat.BackupTime = _mddf.dtvb;
stat.Inode = (ulong)fileId;
stat.Links = 0;
stat.Length = buf.Length;
stat.BlockSize = _mddf.datasize;
stat.Blocks = buf.Length / _mddf.datasize;
}
return(Errno.NoError);
}
}
stat = new FileEntryInfo();
error = GetAttributes(fileId, out FileAttributes fileAttributes);
stat.Attributes = fileAttributes;
if (error != Errno.NoError)
{
return(error);
}
error = ReadExtentsFile(fileId, out file);
if (error != Errno.NoError)
{
return(error);
}
stat.CreationTime = DateHandlers.LisaToDateTime(file.dtc);
stat.AccessTime = DateHandlers.LisaToDateTime(file.dta);
stat.BackupTime = DateHandlers.LisaToDateTime(file.dtb);
stat.LastWriteTime = DateHandlers.LisaToDateTime(file.dtm);
stat.Inode = (ulong)fileId;
stat.Links = 1;
if (!_fileSizeCache.TryGetValue(fileId, out int len))
{
stat.Length = _srecords[fileId].filesize;
}
else
{
stat.Length = len;
}
stat.BlockSize = _mddf.datasize;
stat.Blocks = file.length;
return(Errno.NoError);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = new LisaRoman();
information = "";
StringBuilder sb = new StringBuilder();
try
{
if (imagePlugin.Info.ReadableSectorTags == null)
{
return;
}
if (!imagePlugin.Info.ReadableSectorTags.Contains(SectorTagType.AppleSectorTag))
{
return;
}
// LisaOS is big-endian
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
// Minimal LisaOS disk is 3.5" single sided double density, 800 sectors
if (imagePlugin.Info.Sectors < 800)
{
return;
}
int beforeMddf = -1;
// LisaOS searches sectors until tag tells MDDF resides there, so we'll search 100 sectors
for (int i = 0; i < 100; i++)
{
DecodeTag(imagePlugin.ReadSectorTag((ulong)i, SectorTagType.AppleSectorTag),
out LisaTag.PriamTag searchTag);
DicConsole.DebugWriteLine("LisaFS plugin", "Sector {0}, file ID 0x{1:X4}", i, searchTag.FileId);
if (beforeMddf == -1 && searchTag.FileId == FILEID_LOADER_SIGNED)
{
beforeMddf = i - 1;
}
if (searchTag.FileId != FILEID_MDDF)
{
continue;
}
byte[] sector = imagePlugin.ReadSector((ulong)i);
MDDF infoMddf = new MDDF();
byte[] pString = new byte[33];
infoMddf.fsversion = BigEndianBitConverter.ToUInt16(sector, 0x00);
infoMddf.volid = BigEndianBitConverter.ToUInt64(sector, 0x02);
infoMddf.volnum = BigEndianBitConverter.ToUInt16(sector, 0x0A);
Array.Copy(sector, 0x0C, pString, 0, 33);
infoMddf.volname = StringHandlers.PascalToString(pString, Encoding);
infoMddf.unknown1 = sector[0x2D];
Array.Copy(sector, 0x2E, pString, 0, 33);
// Prevent garbage
infoMddf.password = pString[0] <= 32 ? StringHandlers.PascalToString(pString, Encoding) : "";
infoMddf.unknown2 = sector[0x4F];
infoMddf.machine_id = BigEndianBitConverter.ToUInt32(sector, 0x50);
infoMddf.master_copy_id = BigEndianBitConverter.ToUInt32(sector, 0x54);
uint lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x58);
infoMddf.dtvc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x5C);
infoMddf.dtcc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x60);
infoMddf.dtvb = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x64);
infoMddf.dtvs = DateHandlers.LisaToDateTime(lisaTime);
infoMddf.unknown3 = BigEndianBitConverter.ToUInt32(sector, 0x68);
infoMddf.mddf_block = BigEndianBitConverter.ToUInt32(sector, 0x6C);
infoMddf.volsize_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x70);
infoMddf.volsize_minus_mddf_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x74);
infoMddf.vol_size = BigEndianBitConverter.ToUInt32(sector, 0x78);
infoMddf.blocksize = BigEndianBitConverter.ToUInt16(sector, 0x7C);
infoMddf.datasize = BigEndianBitConverter.ToUInt16(sector, 0x7E);
infoMddf.unknown4 = BigEndianBitConverter.ToUInt16(sector, 0x80);
infoMddf.unknown5 = BigEndianBitConverter.ToUInt32(sector, 0x82);
infoMddf.unknown6 = BigEndianBitConverter.ToUInt32(sector, 0x86);
infoMddf.clustersize = BigEndianBitConverter.ToUInt16(sector, 0x8A);
infoMddf.fs_size = BigEndianBitConverter.ToUInt32(sector, 0x8C);
infoMddf.unknown7 = BigEndianBitConverter.ToUInt32(sector, 0x90);
infoMddf.srec_ptr = BigEndianBitConverter.ToUInt32(sector, 0x94);
infoMddf.unknown9 = BigEndianBitConverter.ToUInt16(sector, 0x98);
infoMddf.srec_len = BigEndianBitConverter.ToUInt16(sector, 0x9A);
infoMddf.unknown10 = BigEndianBitConverter.ToUInt32(sector, 0x9C);
infoMddf.unknown11 = BigEndianBitConverter.ToUInt32(sector, 0xA0);
infoMddf.unknown12 = BigEndianBitConverter.ToUInt32(sector, 0xA4);
infoMddf.unknown13 = BigEndianBitConverter.ToUInt32(sector, 0xA8);
infoMddf.unknown14 = BigEndianBitConverter.ToUInt32(sector, 0xAC);
infoMddf.filecount = BigEndianBitConverter.ToUInt16(sector, 0xB0);
infoMddf.unknown15 = BigEndianBitConverter.ToUInt32(sector, 0xB2);
infoMddf.unknown16 = BigEndianBitConverter.ToUInt32(sector, 0xB6);
infoMddf.freecount = BigEndianBitConverter.ToUInt32(sector, 0xBA);
infoMddf.unknown17 = BigEndianBitConverter.ToUInt16(sector, 0xBE);
infoMddf.unknown18 = BigEndianBitConverter.ToUInt32(sector, 0xC0);
infoMddf.overmount_stamp = BigEndianBitConverter.ToUInt64(sector, 0xC4);
infoMddf.serialization = BigEndianBitConverter.ToUInt32(sector, 0xCC);
infoMddf.unknown19 = BigEndianBitConverter.ToUInt32(sector, 0xD0);
infoMddf.unknown_timestamp = BigEndianBitConverter.ToUInt32(sector, 0xD4);
infoMddf.unknown20 = BigEndianBitConverter.ToUInt32(sector, 0xD8);
infoMddf.unknown21 = BigEndianBitConverter.ToUInt32(sector, 0xDC);
infoMddf.unknown22 = BigEndianBitConverter.ToUInt32(sector, 0xE0);
infoMddf.unknown23 = BigEndianBitConverter.ToUInt32(sector, 0xE4);
infoMddf.unknown24 = BigEndianBitConverter.ToUInt32(sector, 0xE8);
infoMddf.unknown25 = BigEndianBitConverter.ToUInt32(sector, 0xEC);
infoMddf.unknown26 = BigEndianBitConverter.ToUInt32(sector, 0xF0);
infoMddf.unknown27 = BigEndianBitConverter.ToUInt32(sector, 0xF4);
infoMddf.unknown28 = BigEndianBitConverter.ToUInt32(sector, 0xF8);
infoMddf.unknown29 = BigEndianBitConverter.ToUInt32(sector, 0xFC);
infoMddf.unknown30 = BigEndianBitConverter.ToUInt32(sector, 0x100);
infoMddf.unknown31 = BigEndianBitConverter.ToUInt32(sector, 0x104);
infoMddf.unknown32 = BigEndianBitConverter.ToUInt32(sector, 0x108);
infoMddf.unknown33 = BigEndianBitConverter.ToUInt32(sector, 0x10C);
infoMddf.unknown34 = BigEndianBitConverter.ToUInt32(sector, 0x110);
infoMddf.unknown35 = BigEndianBitConverter.ToUInt32(sector, 0x114);
infoMddf.backup_volid = BigEndianBitConverter.ToUInt64(sector, 0x118);
infoMddf.label_size = BigEndianBitConverter.ToUInt16(sector, 0x120);
infoMddf.fs_overhead = BigEndianBitConverter.ToUInt16(sector, 0x122);
infoMddf.result_scavenge = BigEndianBitConverter.ToUInt16(sector, 0x124);
infoMddf.boot_code = BigEndianBitConverter.ToUInt16(sector, 0x126);
infoMddf.boot_environ = BigEndianBitConverter.ToUInt16(sector, 0x6C);
infoMddf.unknown36 = BigEndianBitConverter.ToUInt32(sector, 0x12A);
infoMddf.unknown37 = BigEndianBitConverter.ToUInt32(sector, 0x12E);
infoMddf.unknown38 = BigEndianBitConverter.ToUInt32(sector, 0x132);
infoMddf.vol_sequence = BigEndianBitConverter.ToUInt16(sector, 0x136);
infoMddf.vol_left_mounted = sector[0x138];
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown1 = 0x{0:X2} ({0})", infoMddf.unknown1);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown2 = 0x{0:X2} ({0})", infoMddf.unknown2);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown3 = 0x{0:X8} ({0})", infoMddf.unknown3);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown4 = 0x{0:X4} ({0})", infoMddf.unknown4);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown5 = 0x{0:X8} ({0})", infoMddf.unknown5);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown6 = 0x{0:X8} ({0})", infoMddf.unknown6);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown7 = 0x{0:X8} ({0})", infoMddf.unknown7);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown9 = 0x{0:X4} ({0})", infoMddf.unknown9);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown10 = 0x{0:X8} ({0})", infoMddf.unknown10);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown11 = 0x{0:X8} ({0})", infoMddf.unknown11);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown12 = 0x{0:X8} ({0})", infoMddf.unknown12);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown13 = 0x{0:X8} ({0})", infoMddf.unknown13);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown14 = 0x{0:X8} ({0})", infoMddf.unknown14);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown15 = 0x{0:X8} ({0})", infoMddf.unknown15);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown16 = 0x{0:X8} ({0})", infoMddf.unknown16);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown17 = 0x{0:X4} ({0})", infoMddf.unknown17);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown18 = 0x{0:X8} ({0})", infoMddf.unknown18);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown19 = 0x{0:X8} ({0})", infoMddf.unknown19);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown20 = 0x{0:X8} ({0})", infoMddf.unknown20);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown21 = 0x{0:X8} ({0})", infoMddf.unknown21);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown22 = 0x{0:X8} ({0})", infoMddf.unknown22);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown23 = 0x{0:X8} ({0})", infoMddf.unknown23);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown24 = 0x{0:X8} ({0})", infoMddf.unknown24);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown25 = 0x{0:X8} ({0})", infoMddf.unknown25);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown26 = 0x{0:X8} ({0})", infoMddf.unknown26);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown27 = 0x{0:X8} ({0})", infoMddf.unknown27);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown28 = 0x{0:X8} ({0})", infoMddf.unknown28);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown29 = 0x{0:X8} ({0})", infoMddf.unknown29);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown30 = 0x{0:X8} ({0})", infoMddf.unknown30);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown31 = 0x{0:X8} ({0})", infoMddf.unknown31);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown32 = 0x{0:X8} ({0})", infoMddf.unknown32);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown33 = 0x{0:X8} ({0})", infoMddf.unknown33);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown34 = 0x{0:X8} ({0})", infoMddf.unknown34);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown35 = 0x{0:X8} ({0})", infoMddf.unknown35);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown36 = 0x{0:X8} ({0})", infoMddf.unknown36);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown37 = 0x{0:X8} ({0})", infoMddf.unknown37);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown38 = 0x{0:X8} ({0})", infoMddf.unknown38);
DicConsole.DebugWriteLine("LisaFS plugin", "mddf.unknown_timestamp = 0x{0:X8} ({0}, {1})",
infoMddf.unknown_timestamp,
DateHandlers.LisaToDateTime(infoMddf.unknown_timestamp));
if (infoMddf.mddf_block != i - beforeMddf)
{
return;
}
if (infoMddf.vol_size > imagePlugin.Info.Sectors)
{
return;
}
if (infoMddf.vol_size - 1 != infoMddf.volsize_minus_one)
{
return;
}
if (infoMddf.vol_size - i - 1 != infoMddf.volsize_minus_mddf_minus_one - beforeMddf)
{
return;
}
if (infoMddf.datasize > infoMddf.blocksize)
{
return;
}
if (infoMddf.blocksize < imagePlugin.Info.SectorSize)
{
return;
}
if (infoMddf.datasize != imagePlugin.Info.SectorSize)
{
return;
}
switch (infoMddf.fsversion)
{
case LISA_V1:
sb.AppendLine("LisaFS v1");
break;
case LISA_V2:
sb.AppendLine("LisaFS v2");
break;
case LISA_V3:
sb.AppendLine("LisaFS v3");
break;
default:
sb.AppendFormat("Uknown LisaFS version {0}", infoMddf.fsversion).AppendLine();
break;
}
sb.AppendFormat("Volume name: \"{0}\"", infoMddf.volname).AppendLine();
sb.AppendFormat("Volume password: \"{0}\"", infoMddf.password).AppendLine();
sb.AppendFormat("Volume ID: 0x{0:X16}", infoMddf.volid).AppendLine();
sb.AppendFormat("Backup volume ID: 0x{0:X16}", infoMddf.backup_volid).AppendLine();
sb.AppendFormat("Master copy ID: 0x{0:X8}", infoMddf.master_copy_id).AppendLine();
sb.AppendFormat("Volume is number {0} of {1}", infoMddf.volnum, infoMddf.vol_sequence).AppendLine();
sb.AppendFormat("Serial number of Lisa computer that created this volume: {0}", infoMddf.machine_id)
.AppendLine();
sb.AppendFormat("Serial number of Lisa computer that can use this volume's software {0}",
infoMddf.serialization).AppendLine();
sb.AppendFormat("Volume created on {0}", infoMddf.dtvc).AppendLine();
sb.AppendFormat("Some timestamp, says {0}", infoMddf.dtcc).AppendLine();
sb.AppendFormat("Volume backed up on {0}", infoMddf.dtvb).AppendLine();
sb.AppendFormat("Volume scavenged on {0}", infoMddf.dtvs).AppendLine();
sb.AppendFormat("MDDF is in block {0}", infoMddf.mddf_block + beforeMddf).AppendLine();
sb.AppendFormat("There are {0} reserved blocks before volume", beforeMddf).AppendLine();
sb.AppendFormat("{0} blocks minus one", infoMddf.volsize_minus_one).AppendLine();
sb.AppendFormat("{0} blocks minus one minus MDDF offset", infoMddf.volsize_minus_mddf_minus_one)
.AppendLine();
sb.AppendFormat("{0} blocks in volume", infoMddf.vol_size).AppendLine();
sb.AppendFormat("{0} bytes per sector (uncooked)", infoMddf.blocksize).AppendLine();
sb.AppendFormat("{0} bytes per sector", infoMddf.datasize).AppendLine();
sb.AppendFormat("{0} blocks per cluster", infoMddf.clustersize).AppendLine();
sb.AppendFormat("{0} blocks in filesystem", infoMddf.fs_size).AppendLine();
sb.AppendFormat("{0} files in volume", infoMddf.filecount).AppendLine();
sb.AppendFormat("{0} blocks free", infoMddf.freecount).AppendLine();
sb.AppendFormat("{0} bytes in LisaInfo", infoMddf.label_size).AppendLine();
sb.AppendFormat("Filesystem overhead: {0}", infoMddf.fs_overhead).AppendLine();
sb.AppendFormat("Scanvenger result code: 0x{0:X8}", infoMddf.result_scavenge).AppendLine();
sb.AppendFormat("Boot code: 0x{0:X8}", infoMddf.boot_code).AppendLine();
sb.AppendFormat("Boot environment: 0x{0:X8}", infoMddf.boot_environ).AppendLine();
sb.AppendFormat("Overmount stamp: 0x{0:X16}", infoMddf.overmount_stamp).AppendLine();
sb.AppendFormat("S-Records start at {0} and spans for {1} blocks",
infoMddf.srec_ptr + infoMddf.mddf_block + beforeMddf, infoMddf.srec_len)
.AppendLine();
sb.AppendLine(infoMddf.vol_left_mounted == 0 ? "Volume is clean" : "Volume is dirty");
information = sb.ToString();
XmlFsType = new FileSystemType();
if (DateTime.Compare(infoMddf.dtvb, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.BackupDate = infoMddf.dtvb;
XmlFsType.BackupDateSpecified = true;
}
XmlFsType.Clusters = infoMddf.vol_size;
XmlFsType.ClusterSize = infoMddf.clustersize * infoMddf.datasize;
if (DateTime.Compare(infoMddf.dtvc, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.CreationDate = infoMddf.dtvc;
XmlFsType.CreationDateSpecified = true;
}
XmlFsType.Dirty = infoMddf.vol_left_mounted != 0;
XmlFsType.Files = infoMddf.filecount;
XmlFsType.FilesSpecified = true;
XmlFsType.FreeClusters = infoMddf.freecount;
XmlFsType.FreeClustersSpecified = true;
XmlFsType.Type = "LisaFS";
XmlFsType.VolumeName = infoMddf.volname;
XmlFsType.VolumeSerial = $"{infoMddf.volid:X16}";
return;
}
}
catch (Exception ex)
{
DicConsole.ErrorWriteLine("Exception {0}, {1}, {2}", ex.Message, ex.InnerException, ex.StackTrace);
}
}
/// <summary>
/// Mounts an Apple Lisa filesystem
/// </summary>
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options, string @namespace)
{
try
{
device = imagePlugin;
Encoding = new LisaRoman();
// Lisa OS is unable to work on disks without tags.
// This code is designed like that.
// However with some effort the code may be modified to ignore them.
if (device.Info.ReadableSectorTags == null ||
!device.Info.ReadableSectorTags.Contains(SectorTagType.AppleSectorTag))
{
DicConsole.DebugWriteLine("LisaFS plugin", "Underlying device does not support Lisa tags");
return(Errno.InOutError);
}
// LisaOS is big-endian
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
// Minimal LisaOS disk is 3.5" single sided double density, 800 sectors
if (device.Info.Sectors < 800)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Device is too small");
return(Errno.InOutError);
}
// MDDF cannot be at end of device, of course
volumePrefix = device.Info.Sectors;
// LisaOS searches sectors until tag tells MDDF resides there, so we'll search 100 sectors
for (ulong i = 0; i < 100; i++)
{
DecodeTag(device.ReadSectorTag(i, SectorTagType.AppleSectorTag), out LisaTag.PriamTag searchTag);
DicConsole.DebugWriteLine("LisaFS plugin", "Sector {0}, file ID 0x{1:X4}", i, searchTag.FileId);
if (volumePrefix == device.Info.Sectors && searchTag.FileId == FILEID_LOADER_SIGNED)
{
volumePrefix = i - 1;
}
if (searchTag.FileId != FILEID_MDDF)
{
continue;
}
devTagSize = device.ReadSectorTag(i, SectorTagType.AppleSectorTag).Length;
byte[] sector = device.ReadSector(i);
mddf = new MDDF();
byte[] pString = new byte[33];
mddf.fsversion = BigEndianBitConverter.ToUInt16(sector, 0x00);
mddf.volid = BigEndianBitConverter.ToUInt64(sector, 0x02);
mddf.volnum = BigEndianBitConverter.ToUInt16(sector, 0x0A);
Array.Copy(sector, 0x0C, pString, 0, 33);
mddf.volname = StringHandlers.PascalToString(pString, Encoding);
mddf.unknown1 = sector[0x2D];
Array.Copy(sector, 0x2E, pString, 0, 33);
// Prevent garbage
mddf.password = pString[0] <= 32 ? StringHandlers.PascalToString(pString, Encoding) : "";
mddf.unknown2 = sector[0x4F];
mddf.machine_id = BigEndianBitConverter.ToUInt32(sector, 0x50);
mddf.master_copy_id = BigEndianBitConverter.ToUInt32(sector, 0x54);
uint lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x58);
mddf.dtvc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x5C);
mddf.dtcc = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x60);
mddf.dtvb = DateHandlers.LisaToDateTime(lisaTime);
lisaTime = BigEndianBitConverter.ToUInt32(sector, 0x64);
mddf.dtvs = DateHandlers.LisaToDateTime(lisaTime);
mddf.unknown3 = BigEndianBitConverter.ToUInt32(sector, 0x68);
mddf.mddf_block = BigEndianBitConverter.ToUInt32(sector, 0x6C);
mddf.volsize_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x70);
mddf.volsize_minus_mddf_minus_one = BigEndianBitConverter.ToUInt32(sector, 0x74);
mddf.vol_size = BigEndianBitConverter.ToUInt32(sector, 0x78);
mddf.blocksize = BigEndianBitConverter.ToUInt16(sector, 0x7C);
mddf.datasize = BigEndianBitConverter.ToUInt16(sector, 0x7E);
mddf.unknown4 = BigEndianBitConverter.ToUInt16(sector, 0x80);
mddf.unknown5 = BigEndianBitConverter.ToUInt32(sector, 0x82);
mddf.unknown6 = BigEndianBitConverter.ToUInt32(sector, 0x86);
mddf.clustersize = BigEndianBitConverter.ToUInt16(sector, 0x8A);
mddf.fs_size = BigEndianBitConverter.ToUInt32(sector, 0x8C);
mddf.unknown7 = BigEndianBitConverter.ToUInt32(sector, 0x90);
mddf.srec_ptr = BigEndianBitConverter.ToUInt32(sector, 0x94);
mddf.unknown9 = BigEndianBitConverter.ToUInt16(sector, 0x98);
mddf.srec_len = BigEndianBitConverter.ToUInt16(sector, 0x9A);
mddf.unknown10 = BigEndianBitConverter.ToUInt32(sector, 0x9C);
mddf.unknown11 = BigEndianBitConverter.ToUInt32(sector, 0xA0);
mddf.unknown12 = BigEndianBitConverter.ToUInt32(sector, 0xA4);
mddf.unknown13 = BigEndianBitConverter.ToUInt32(sector, 0xA8);
mddf.unknown14 = BigEndianBitConverter.ToUInt32(sector, 0xAC);
mddf.filecount = BigEndianBitConverter.ToUInt16(sector, 0xB0);
mddf.unknown15 = BigEndianBitConverter.ToUInt32(sector, 0xB2);
mddf.unknown16 = BigEndianBitConverter.ToUInt32(sector, 0xB6);
mddf.freecount = BigEndianBitConverter.ToUInt32(sector, 0xBA);
mddf.unknown17 = BigEndianBitConverter.ToUInt16(sector, 0xBE);
mddf.unknown18 = BigEndianBitConverter.ToUInt32(sector, 0xC0);
mddf.overmount_stamp = BigEndianBitConverter.ToUInt64(sector, 0xC4);
mddf.serialization = BigEndianBitConverter.ToUInt32(sector, 0xCC);
mddf.unknown19 = BigEndianBitConverter.ToUInt32(sector, 0xD0);
mddf.unknown_timestamp = BigEndianBitConverter.ToUInt32(sector, 0xD4);
mddf.unknown20 = BigEndianBitConverter.ToUInt32(sector, 0xD8);
mddf.unknown21 = BigEndianBitConverter.ToUInt32(sector, 0xDC);
mddf.unknown22 = BigEndianBitConverter.ToUInt32(sector, 0xE0);
mddf.unknown23 = BigEndianBitConverter.ToUInt32(sector, 0xE4);
mddf.unknown24 = BigEndianBitConverter.ToUInt32(sector, 0xE8);
mddf.unknown25 = BigEndianBitConverter.ToUInt32(sector, 0xEC);
mddf.unknown26 = BigEndianBitConverter.ToUInt32(sector, 0xF0);
mddf.unknown27 = BigEndianBitConverter.ToUInt32(sector, 0xF4);
mddf.unknown28 = BigEndianBitConverter.ToUInt32(sector, 0xF8);
mddf.unknown29 = BigEndianBitConverter.ToUInt32(sector, 0xFC);
mddf.unknown30 = BigEndianBitConverter.ToUInt32(sector, 0x100);
mddf.unknown31 = BigEndianBitConverter.ToUInt32(sector, 0x104);
mddf.unknown32 = BigEndianBitConverter.ToUInt32(sector, 0x108);
mddf.unknown33 = BigEndianBitConverter.ToUInt32(sector, 0x10C);
mddf.unknown34 = BigEndianBitConverter.ToUInt32(sector, 0x110);
mddf.unknown35 = BigEndianBitConverter.ToUInt32(sector, 0x114);
mddf.backup_volid = BigEndianBitConverter.ToUInt64(sector, 0x118);
mddf.label_size = BigEndianBitConverter.ToUInt16(sector, 0x120);
mddf.fs_overhead = BigEndianBitConverter.ToUInt16(sector, 0x122);
mddf.result_scavenge = BigEndianBitConverter.ToUInt16(sector, 0x124);
mddf.boot_code = BigEndianBitConverter.ToUInt16(sector, 0x126);
mddf.boot_environ = BigEndianBitConverter.ToUInt16(sector, 0x6C);
mddf.unknown36 = BigEndianBitConverter.ToUInt32(sector, 0x12A);
mddf.unknown37 = BigEndianBitConverter.ToUInt32(sector, 0x12E);
mddf.unknown38 = BigEndianBitConverter.ToUInt32(sector, 0x132);
mddf.vol_sequence = BigEndianBitConverter.ToUInt16(sector, 0x136);
mddf.vol_left_mounted = sector[0x138];
// Check that the MDDF is correct
if (mddf.mddf_block != i - volumePrefix ||
mddf.vol_size > device.Info.Sectors ||
mddf.vol_size - 1 !=
mddf.volsize_minus_one ||
mddf.vol_size - i - 1 !=
mddf.volsize_minus_mddf_minus_one - volumePrefix ||
mddf.datasize >
mddf.blocksize || mddf.blocksize < device.Info.SectorSize ||
mddf.datasize != device.Info.SectorSize)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Incorrect MDDF found");
return(Errno.InvalidArgument);
}
// Check MDDF version
switch (mddf.fsversion)
{
case LISA_V1:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v1");
break;
case LISA_V2:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v2");
break;
case LISA_V3:
DicConsole.DebugWriteLine("LisaFS plugin", "Mounting LisaFS v3");
break;
default:
DicConsole.ErrorWriteLine("Cannot mount LisaFS version {0}", mddf.fsversion.ToString());
return(Errno.NotSupported);
}
// Initialize caches
extentCache = new Dictionary <short, ExtentFile>();
systemFileCache = new Dictionary <short, byte[]>();
fileCache = new Dictionary <short, byte[]>();
//catalogCache = new Dictionary<short, List<CatalogEntry>>();
fileSizeCache = new Dictionary <short, int>();
mounted = true;
if (options == null)
{
options = GetDefaultOptions();
}
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out debug);
}
if (debug)
{
printedExtents = new List <short>();
}
// Read the S-Records file
Errno error = ReadSRecords();
if (error != Errno.NoError)
{
DicConsole.ErrorWriteLine("Error {0} reading S-Records file.", error);
return(error);
}
directoryDtcCache = new Dictionary <short, DateTime> {
{ DIRID_ROOT, mddf.dtcc }
};
// Read the Catalog File
error = ReadCatalog();
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Cannot read Catalog File, error {0}",
error.ToString());
mounted = false;
return(error);
}
// If debug, cache system files
if (debug)
{
error = ReadSystemFile(FILEID_BOOT_SIGNED, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot blocks");
mounted = false;
return(error);
}
error = ReadSystemFile(FILEID_LOADER_SIGNED, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read boot loader");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_MDDF, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read MDDF");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_BITMAP, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read volume bitmap");
mounted = false;
return(error);
}
error = ReadSystemFile((short)FILEID_SRECORD, out _);
if (error != Errno.NoError)
{
DicConsole.DebugWriteLine("LisaFS plugin", "Unable to read S-Records file");
mounted = false;
return(error);
}
}
// Create XML metadata for mounted filesystem
XmlFsType = new FileSystemType();
if (DateTime.Compare(mddf.dtvb, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.BackupDate = mddf.dtvb;
XmlFsType.BackupDateSpecified = true;
}
XmlFsType.Clusters = mddf.vol_size;
XmlFsType.ClusterSize = (uint)(mddf.clustersize * mddf.datasize);
if (DateTime.Compare(mddf.dtvc, DateHandlers.LisaToDateTime(0)) > 0)
{
XmlFsType.CreationDate = mddf.dtvc;
XmlFsType.CreationDateSpecified = true;
}
XmlFsType.Dirty = mddf.vol_left_mounted != 0;
XmlFsType.Files = mddf.filecount;
XmlFsType.FilesSpecified = true;
XmlFsType.FreeClusters = mddf.freecount;
XmlFsType.FreeClustersSpecified = true;
XmlFsType.Type = "LisaFS";
XmlFsType.VolumeName = mddf.volname;
XmlFsType.VolumeSerial = $"{mddf.volid:X16}";
return(Errno.NoError);
}
DicConsole.DebugWriteLine("LisaFS plugin", "Not a Lisa filesystem");
return(Errno.NotSupported);
}
catch (Exception ex)
{
DicConsole.ErrorWriteLine("Exception {0}, {1}, {2}", ex.Message, ex.InnerException, ex.StackTrace);
return(Errno.InOutError);
}
}