public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = Encoding.GetEncoding("koi8-r");
byte[] sector = imagePlugin.ReadSector(0);
BootBlock bb = Marshal.ByteArrayToStructureLittleEndian <BootBlock>(sector);
var sbInformation = new StringBuilder();
sbInformation.AppendLine("Alexander Osipov DOS file system");
XmlFsType = new FileSystemType
{
Type = "Alexander Osipov DOS file system",
Clusters = imagePlugin.Info.Sectors,
ClusterSize = imagePlugin.Info.SectorSize,
Files = bb.files,
FilesSpecified = true,
FreeClusters = imagePlugin.Info.Sectors - bb.usedSectors,
FreeClustersSpecified = true,
VolumeName = StringHandlers.SpacePaddedToString(bb.volumeLabel, Encoding),
Bootable = true
};
sbInformation.AppendFormat("{0} files on volume", bb.files).AppendLine();
sbInformation.AppendFormat("{0} used sectors on volume", bb.usedSectors).AppendLine();
sbInformation.AppendFormat("Disk name: {0}", StringHandlers.CToString(bb.volumeLabel, Encoding)).
AppendLine();
information = sbInformation.ToString();
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = new Radix50();
information = "";
StringBuilder sb = new StringBuilder();
byte[] hbSector = imagePlugin.ReadSector(1 + partition.Start);
GCHandle handle = GCHandle.Alloc(hbSector, GCHandleType.Pinned);
RT11HomeBlock homeblock =
(RT11HomeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(RT11HomeBlock));
handle.Free();
/* TODO: Is this correct?
* Assembler:
* MOV address, R0
* CLR R1
* MOV #255., R2
* 10$: ADD (R0)+, R1
* SOB R2, 10$
* MOV 1,@R0
*/
ushort check = 0;
for (int i = 0; i < 512; i += 2)
{
check += BitConverter.ToUInt16(hbSector, i);
}
sb.AppendFormat("Volume format is {0}",
StringHandlers.SpacePaddedToString(homeblock.format, Encoding.ASCII)).AppendLine();
sb.AppendFormat("{0} sectors per cluster ({1} bytes)", homeblock.cluster, homeblock.cluster * 512)
.AppendLine();
sb.AppendFormat("First directory segment starts at block {0}", homeblock.rootBlock).AppendLine();
sb.AppendFormat("Volume owner is \"{0}\"", Encoding.GetString(homeblock.ownername).TrimEnd()).AppendLine();
sb.AppendFormat("Volume label: \"{0}\"", Encoding.GetString(homeblock.volname).TrimEnd()).AppendLine();
sb.AppendFormat("Checksum: 0x{0:X4} (calculated 0x{1:X4})", homeblock.checksum, check).AppendLine();
byte[] bootBlock = imagePlugin.ReadSector(0);
XmlFsType = new FileSystemType
{
Type = "RT-11",
ClusterSize = homeblock.cluster * 512,
Clusters = homeblock.cluster,
VolumeName = StringHandlers.SpacePaddedToString(homeblock.volname, Encoding),
Bootable = !ArrayHelpers.ArrayIsNullOrEmpty(bootBlock)
};
information = sb.ToString();
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = Encoding.GetEncoding("koi8-r");
byte[] sector = imagePlugin.ReadSector(0);
AODOS_BootBlock bb = new AODOS_BootBlock();
IntPtr bbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(bb));
Marshal.Copy(sector, 0, bbPtr, Marshal.SizeOf(bb));
bb = (AODOS_BootBlock)Marshal.PtrToStructure(bbPtr, typeof(AODOS_BootBlock));
Marshal.FreeHGlobal(bbPtr);
StringBuilder sbInformation = new StringBuilder();
sbInformation.AppendLine("Alexander Osipov DOS file system");
XmlFsType = new FileSystemType
{
Type = "Alexander Osipov DOS file system",
Clusters = (long)imagePlugin.Info.Sectors,
ClusterSize = (int)imagePlugin.Info.SectorSize,
Files = bb.files,
FilesSpecified = true,
FreeClusters = (long)(imagePlugin.Info.Sectors - bb.usedSectors),
FreeClustersSpecified = true,
VolumeName = StringHandlers.SpacePaddedToString(bb.volumeLabel, Encoding),
Bootable = true
};
sbInformation.AppendFormat("{0} files on volume", bb.files).AppendLine();
sbInformation.AppendFormat("{0} used sectors on volume", bb.usedSectors).AppendLine();
sbInformation.AppendFormat("Disk name: {0}", StringHandlers.CToString(bb.volumeLabel, Encoding))
.AppendLine();
information = sbInformation.ToString();
}
Errno ReadCatalog()
{
MemoryStream catalogMs = new MemoryStream();
ulong lba = (ulong)(vtoc.catalogTrack * sectorsPerTrack + vtoc.catalogSector);
totalFileEntries = 0;
catalogCache = new Dictionary <string, ushort>();
fileTypeCache = new Dictionary <string, byte>();
fileSizeCache = new Dictionary <string, int>();
lockedFiles = new List <string>();
if (lba == 0 || lba > device.Info.Sectors)
{
return(Errno.InvalidArgument);
}
while (lba != 0)
{
usedSectors++;
byte[] catSectorB = device.ReadSector(lba);
totalFileEntries += 7;
if (debug)
{
catalogMs.Write(catSectorB, 0, catSectorB.Length);
}
// Read the catalog sector
CatalogSector catSector = Marshal.ByteArrayToStructureLittleEndian <CatalogSector>(catSectorB);
foreach (FileEntry entry in catSector.entries.Where(entry => entry.extentTrack > 0))
{
track1UsedByFiles |= entry.extentTrack == 1;
track2UsedByFiles |= entry.extentTrack == 2;
byte[] filenameB = new byte[30];
ushort ts = (ushort)((entry.extentTrack << 8) | entry.extentSector);
// Apple DOS has high byte set over ASCII.
for (int i = 0; i < 30; i++)
{
filenameB[i] = (byte)(entry.filename[i] & 0x7F);
}
string filename = StringHandlers.SpacePaddedToString(filenameB, Encoding);
if (!catalogCache.ContainsKey(filename))
{
catalogCache.Add(filename, ts);
}
if (!fileTypeCache.ContainsKey(filename))
{
fileTypeCache.Add(filename, (byte)(entry.typeAndFlags & 0x7F));
}
if (!fileSizeCache.ContainsKey(filename))
{
fileSizeCache.Add(filename, entry.length * vtoc.bytesPerSector);
}
if ((entry.typeAndFlags & 0x80) == 0x80 && !lockedFiles.Contains(filename))
{
lockedFiles.Add(filename);
}
}
lba = (ulong)(catSector.trackOfNext * sectorsPerTrack + catSector.sectorOfNext);
if (lba > device.Info.Sectors)
{
break;
}
}
if (debug)
{
catalogBlocks = catalogMs.ToArray();
}
return(Errno.NoError);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("iso-8859-1");
information = "";
StringBuilder sb = new StringBuilder();
byte[] hbSector = imagePlugin.ReadSector(1 + partition.Start);
GCHandle handle = GCHandle.Alloc(hbSector, GCHandleType.Pinned);
OdsHomeBlock homeblock =
(OdsHomeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(OdsHomeBlock));
handle.Free();
// Optical disc
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc &&
StringHandlers.CToString(homeblock.format) != "DECFILE11A " &&
StringHandlers.CToString(homeblock.format) != "DECFILE11B ")
{
if (hbSector.Length < 0x400)
{
return;
}
byte[] tmp = imagePlugin.ReadSector(partition.Start);
hbSector = new byte[0x200];
Array.Copy(tmp, 0x200, hbSector, 0, 0x200);
handle = GCHandle.Alloc(hbSector, GCHandleType.Pinned);
homeblock = (OdsHomeBlock)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(OdsHomeBlock));
handle.Free();
if (StringHandlers.CToString(homeblock.format) != "DECFILE11A " &&
StringHandlers.CToString(homeblock.format) != "DECFILE11B ")
{
return;
}
}
if ((homeblock.struclev & 0xFF00) != 0x0200 || (homeblock.struclev & 0xFF) != 1 ||
StringHandlers.CToString(homeblock.format) != "DECFILE11B ")
{
sb.AppendLine("The following information may be incorrect for this volume.");
}
if (homeblock.resfiles < 5 || homeblock.devtype != 0)
{
sb.AppendLine("This volume may be corrupted.");
}
sb.AppendFormat("Volume format is {0}", StringHandlers.SpacePaddedToString(homeblock.format, Encoding))
.AppendLine();
sb.AppendFormat("Volume is Level {0} revision {1}", (homeblock.struclev & 0xFF00) >> 8,
homeblock.struclev & 0xFF).AppendLine();
sb.AppendFormat("Lowest structure in the volume is Level {0}, revision {1}",
(homeblock.lowstruclev & 0xFF00) >> 8, homeblock.lowstruclev & 0xFF).AppendLine();
sb.AppendFormat("Highest structure in the volume is Level {0}, revision {1}",
(homeblock.highstruclev & 0xFF00) >> 8, homeblock.highstruclev & 0xFF).AppendLine();
sb.AppendFormat("{0} sectors per cluster ({1} bytes)", homeblock.cluster, homeblock.cluster * 512)
.AppendLine();
sb.AppendFormat("This home block is on sector {0} (VBN {1})", homeblock.homelbn, homeblock.homevbn)
.AppendLine();
sb.AppendFormat("Secondary home block is on sector {0} (VBN {1})", homeblock.alhomelbn, homeblock.alhomevbn)
.AppendLine();
sb.AppendFormat("Volume bitmap starts in sector {0} (VBN {1})", homeblock.ibmaplbn, homeblock.ibmapvbn)
.AppendLine();
sb.AppendFormat("Volume bitmap runs for {0} sectors ({1} bytes)", homeblock.ibmapsize,
homeblock.ibmapsize * 512).AppendLine();
sb.AppendFormat("Backup INDEXF.SYS;1 is in sector {0} (VBN {1})", homeblock.altidxlbn, homeblock.altidxvbn)
.AppendLine();
sb.AppendFormat("{0} maximum files on the volume", homeblock.maxfiles).AppendLine();
sb.AppendFormat("{0} reserved files", homeblock.resfiles).AppendLine();
if (homeblock.rvn > 0 && homeblock.setcount > 0 &&
StringHandlers.CToString(homeblock.strucname) != " ")
{
sb.AppendFormat("Volume is {0} of {1} in set \"{2}\".", homeblock.rvn, homeblock.setcount,
StringHandlers.SpacePaddedToString(homeblock.strucname, Encoding)).AppendLine();
}
sb.AppendFormat("Volume owner is \"{0}\" (ID 0x{1:X8})",
StringHandlers.SpacePaddedToString(homeblock.ownername, Encoding), homeblock.volowner)
.AppendLine();
sb.AppendFormat("Volume label: \"{0}\"", StringHandlers.SpacePaddedToString(homeblock.volname, Encoding))
.AppendLine();
sb.AppendFormat("Drive serial number: 0x{0:X8}", homeblock.serialnum).AppendLine();
sb.AppendFormat("Volume was created on {0}", DateHandlers.VmsToDateTime(homeblock.credate)).AppendLine();
if (homeblock.revdate > 0)
{
sb.AppendFormat("Volume was last modified on {0}", DateHandlers.VmsToDateTime(homeblock.revdate))
.AppendLine();
}
if (homeblock.copydate > 0)
{
sb.AppendFormat("Volume copied on {0}", DateHandlers.VmsToDateTime(homeblock.copydate)).AppendLine();
}
sb.AppendFormat("Checksums: 0x{0:X4} and 0x{1:X4}", homeblock.checksum1, homeblock.checksum2).AppendLine();
sb.AppendLine("Flags:");
sb.AppendFormat("Window: {0}", homeblock.window).AppendLine();
sb.AppendFormat("Cached directores: {0}", homeblock.lru_lim).AppendLine();
sb.AppendFormat("Default allocation: {0} blocks", homeblock.extend).AppendLine();
if ((homeblock.volchar & 0x01) == 0x01)
{
sb.AppendLine("Readings should be verified");
}
if ((homeblock.volchar & 0x02) == 0x02)
{
sb.AppendLine("Writings should be verified");
}
if ((homeblock.volchar & 0x04) == 0x04)
{
sb.AppendLine("Files should be erased or overwritten when deleted");
}
if ((homeblock.volchar & 0x08) == 0x08)
{
sb.AppendLine("Highwater mark is to be disabled");
}
if ((homeblock.volchar & 0x10) == 0x10)
{
sb.AppendLine("Classification checks are enabled");
}
sb.AppendLine("Volume permissions (r = read, w = write, c = create, d = delete)");
sb.AppendLine("System, owner, group, world");
// System
sb.Append((homeblock.protect & 0x1000) == 0x1000 ? "-" : "r");
sb.Append((homeblock.protect & 0x2000) == 0x2000 ? "-" : "w");
sb.Append((homeblock.protect & 0x4000) == 0x4000 ? "-" : "c");
sb.Append((homeblock.protect & 0x8000) == 0x8000 ? "-" : "d");
// Owner
sb.Append((homeblock.protect & 0x100) == 0x100 ? "-" : "r");
sb.Append((homeblock.protect & 0x200) == 0x200 ? "-" : "w");
sb.Append((homeblock.protect & 0x400) == 0x400 ? "-" : "c");
sb.Append((homeblock.protect & 0x800) == 0x800 ? "-" : "d");
// Group
sb.Append((homeblock.protect & 0x10) == 0x10 ? "-" : "r");
sb.Append((homeblock.protect & 0x20) == 0x20 ? "-" : "w");
sb.Append((homeblock.protect & 0x40) == 0x40 ? "-" : "c");
sb.Append((homeblock.protect & 0x80) == 0x80 ? "-" : "d");
// World (other)
sb.Append((homeblock.protect & 0x1) == 0x1 ? "-" : "r");
sb.Append((homeblock.protect & 0x2) == 0x2 ? "-" : "w");
sb.Append((homeblock.protect & 0x4) == 0x4 ? "-" : "c");
sb.Append((homeblock.protect & 0x8) == 0x8 ? "-" : "d");
sb.AppendLine();
sb.AppendLine("Unknown structures:");
sb.AppendFormat("Security mask: 0x{0:X8}", homeblock.sec_mask).AppendLine();
sb.AppendFormat("File protection: 0x{0:X4}", homeblock.fileprot).AppendLine();
sb.AppendFormat("Record protection: 0x{0:X4}", homeblock.recprot).AppendLine();
XmlFsType = new FileSystemType
{
Type = "FILES-11",
ClusterSize = homeblock.cluster * 512,
Clusters = (long)partition.Size / (homeblock.cluster * 512),
VolumeName = StringHandlers.SpacePaddedToString(homeblock.volname, Encoding),
VolumeSerial = $"{homeblock.serialnum:X8}"
};
if (homeblock.credate > 0)
{
XmlFsType.CreationDate = DateHandlers.VmsToDateTime(homeblock.credate);
XmlFsType.CreationDateSpecified = true;
}
if (homeblock.revdate > 0)
{
XmlFsType.ModificationDate = DateHandlers.VmsToDateTime(homeblock.revdate);
XmlFsType.ModificationDateSpecified = true;
}
information = sb.ToString();
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("ibm850");
information = "";
var sb = new StringBuilder();
byte[] hpofsBpbSector =
imagePlugin.ReadSector(0 + partition.Start); // Seek to BIOS parameter block, on logical sector 0
byte[] medInfoSector =
imagePlugin.ReadSector(13 + partition.Start); // Seek to media information block, on logical sector 13
byte[] volInfoSector =
imagePlugin.ReadSector(14 + partition.Start); // Seek to volume information block, on logical sector 14
BiosParameterBlock bpb = Marshal.ByteArrayToStructureLittleEndian <BiosParameterBlock>(hpofsBpbSector);
MediaInformationBlock mib = Marshal.ByteArrayToStructureBigEndian <MediaInformationBlock>(medInfoSector);
VolumeInformationBlock vib = Marshal.ByteArrayToStructureBigEndian <VolumeInformationBlock>(volInfoSector);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.oem_name = \"{0}\"",
StringHandlers.CToString(bpb.oem_name));
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.bps = {0}", bpb.bps);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.spc = {0}", bpb.spc);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.rsectors = {0}", bpb.rsectors);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.fats_no = {0}", bpb.fats_no);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.root_ent = {0}", bpb.root_ent);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.sectors = {0}", bpb.sectors);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.media = 0x{0:X2}", bpb.media);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.spfat = {0}", bpb.spfat);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.sptrk = {0}", bpb.sptrk);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.heads = {0}", bpb.heads);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.hsectors = {0}", bpb.hsectors);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.big_sectors = {0}", bpb.big_sectors);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.drive_no = 0x{0:X2}", bpb.drive_no);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.nt_flags = {0}", bpb.nt_flags);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.signature = 0x{0:X2}", bpb.signature);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.serial_no = 0x{0:X8}", bpb.serial_no);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.volume_label = \"{0}\"",
StringHandlers.SpacePaddedToString(bpb.volume_label));
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.fs_type = \"{0}\"", StringHandlers.CToString(bpb.fs_type));
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.boot_code is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(bpb.boot_code));
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.unknown = {0}", bpb.unknown);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.unknown2 = {0}", bpb.unknown2);
AaruConsole.DebugWriteLine("HPOFS Plugin", "bpb.signature2 = {0}", bpb.signature2);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.blockId = \"{0}\"", StringHandlers.CToString(mib.blockId));
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.volumeLabel = \"{0}\"",
StringHandlers.SpacePaddedToString(mib.volumeLabel));
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.comment = \"{0}\"",
StringHandlers.SpacePaddedToString(mib.comment));
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.serial = 0x{0:X8}", mib.serial);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.creationTimestamp = {0}",
DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime));
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.codepageType = {0}", mib.codepageType);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.codepage = {0}", mib.codepage);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.rps = {0}", mib.rps);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.bps = {0}", mib.bps);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.bpc = {0}", mib.bpc);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown2 = {0}", mib.unknown2);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.sectors = {0}", mib.sectors);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown3 = {0}", mib.unknown3);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown4 = {0}", mib.unknown4);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.major = {0}", mib.major);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.minor = {0}", mib.minor);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown5 = {0}", mib.unknown5);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.unknown6 = {0}", mib.unknown6);
AaruConsole.DebugWriteLine("HPOFS Plugin", "mib.filler is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(mib.filler));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.blockId = \"{0}\"", StringHandlers.CToString(vib.blockId));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown = {0}", vib.unknown);
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown2 = {0}", vib.unknown2);
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown3 is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(vib.unknown3));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown4 = \"{0}\"",
StringHandlers.SpacePaddedToString(vib.unknown4));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.owner = \"{0}\"",
StringHandlers.SpacePaddedToString(vib.owner));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown5 = \"{0}\"",
StringHandlers.SpacePaddedToString(vib.unknown5));
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown6 = {0}", vib.unknown6);
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.percentFull = {0}", vib.percentFull);
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.unknown7 = {0}", vib.unknown7);
AaruConsole.DebugWriteLine("HPOFS Plugin", "vib.filler is empty? = {0}",
ArrayHelpers.ArrayIsNullOrEmpty(vib.filler));
sb.AppendLine("High Performance Optical File System");
sb.AppendFormat("OEM name: {0}", StringHandlers.SpacePaddedToString(bpb.oem_name)).AppendLine();
sb.AppendFormat("{0} bytes per sector", bpb.bps).AppendLine();
sb.AppendFormat("{0} sectors per cluster", bpb.spc).AppendLine();
sb.AppendFormat("Media descriptor: 0x{0:X2}", bpb.media).AppendLine();
sb.AppendFormat("{0} sectors per track", bpb.sptrk).AppendLine();
sb.AppendFormat("{0} heads", bpb.heads).AppendLine();
sb.AppendFormat("{0} sectors hidden before BPB", bpb.hsectors).AppendLine();
sb.AppendFormat("{0} sectors on volume ({1} bytes)", mib.sectors, mib.sectors * bpb.bps).AppendLine();
sb.AppendFormat("BIOS Drive Number: 0x{0:X2}", bpb.drive_no).AppendLine();
sb.AppendFormat("Serial number: 0x{0:X8}", mib.serial).AppendLine();
sb.AppendFormat("Volume label: {0}", StringHandlers.SpacePaddedToString(mib.volumeLabel, Encoding)).
AppendLine();
sb.AppendFormat("Volume comment: {0}", StringHandlers.SpacePaddedToString(mib.comment, Encoding)).
AppendLine();
sb.AppendFormat("Volume owner: {0}", StringHandlers.SpacePaddedToString(vib.owner, Encoding)).AppendLine();
sb.AppendFormat("Volume created on {0}", DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime)).
AppendLine();
sb.AppendFormat("Volume uses {0} codepage {1}", mib.codepageType > 0 && mib.codepageType < 3
? mib.codepageType == 2
? "EBCDIC"
: "ASCII" : "Unknown", mib.codepage).AppendLine();
sb.AppendFormat("RPS level: {0}", mib.rps).AppendLine();
sb.AppendFormat("Filesystem version: {0}.{1}", mib.major, mib.minor).AppendLine();
sb.AppendFormat("Volume can be filled up to {0}%", vib.percentFull).AppendLine();
XmlFsType = new FileSystemType
{
Clusters = mib.sectors / bpb.spc,
ClusterSize = (uint)(bpb.bps * bpb.spc),
CreationDate = DateHandlers.DosToDateTime(mib.creationDate, mib.creationTime),
CreationDateSpecified = true,
DataPreparerIdentifier = StringHandlers.SpacePaddedToString(vib.owner, Encoding),
Type = "HPOFS",
VolumeName = StringHandlers.SpacePaddedToString(mib.volumeLabel, Encoding),
VolumeSerial = $"{mib.serial:X8}",
SystemIdentifier = StringHandlers.SpacePaddedToString(bpb.oem_name)
};
information = sb.ToString();
}
/// <inheritdoc />
public Errno Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary <string, string> options, string @namespace)
{
XmlFsType = new FileSystemType();
options ??= GetDefaultOptions();
if (options.TryGetValue("debug", out string debugString))
{
bool.TryParse(debugString, out _debug);
}
// Default namespace
@namespace ??= "ecs";
switch (@namespace.ToLowerInvariant())
{
case "dos":
_namespace = Namespace.Dos;
break;
case "nt":
_namespace = Namespace.Nt;
break;
case "os2":
_namespace = Namespace.Os2;
break;
case "ecs":
_namespace = Namespace.Ecs;
break;
case "lfn":
_namespace = Namespace.Lfn;
break;
case "human":
_namespace = Namespace.Human;
break;
default: return(Errno.InvalidArgument);
}
AaruConsole.DebugWriteLine("FAT plugin", "Reading BPB");
uint sectorsPerBpb = imagePlugin.Info.SectorSize < 512 ? 512 / imagePlugin.Info.SectorSize : 1;
byte[] bpbSector = imagePlugin.ReadSectors(0 + partition.Start, sectorsPerBpb);
BpbKind bpbKind = DetectBpbKind(bpbSector, imagePlugin, partition, out BiosParameterBlockEbpb fakeBpb,
out HumanParameterBlock humanBpb, out AtariParameterBlock atariBpb,
out byte minBootNearJump, out bool andosOemCorrect, out bool bootable);
_fat12 = false;
_fat16 = false;
_fat32 = false;
_useFirstFat = true;
XmlFsType.Bootable = bootable;
_statfs = new FileSystemInfo
{
FilenameLength = 11,
Files = 0, // Requires traversing all directories
FreeFiles = 0,
PluginId = Id,
FreeBlocks = 0 // Requires traversing the FAT
};
// This is needed because for FAT16, GEMDOS increases bytes per sector count instead of using big_sectors field.
uint sectorsPerRealSector = 1;
// This is needed because some OSes don't put volume label as first entry in the root directory
uint sectorsForRootDirectory = 0;
uint rootDirectoryCluster = 0;
Encoding = encoding ?? (bpbKind == BpbKind.Human ? Encoding.GetEncoding("shift_jis")
: Encoding.GetEncoding("IBM437"));
switch (bpbKind)
{
case BpbKind.DecRainbow:
case BpbKind.Hardcoded:
case BpbKind.Msx:
case BpbKind.Apricot:
_fat12 = true;
break;
case BpbKind.ShortFat32:
case BpbKind.LongFat32:
{
_fat32 = true;
Fat32ParameterBlock fat32Bpb =
Marshal.ByteArrayToStructureLittleEndian <Fat32ParameterBlock>(bpbSector);
Fat32ParameterBlockShort shortFat32Bpb =
Marshal.ByteArrayToStructureLittleEndian <Fat32ParameterBlockShort>(bpbSector);
rootDirectoryCluster = fat32Bpb.root_cluster;
// This is to support FAT partitions on hybrid ISO/USB images
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
fat32Bpb.bps *= 4;
fat32Bpb.spc /= 4;
fat32Bpb.big_spfat /= 4;
fat32Bpb.hsectors /= 4;
fat32Bpb.sptrk /= 4;
}
XmlFsType.Type = fat32Bpb.version != 0 ? "FAT+" : "FAT32";
if (fat32Bpb.oem_name != null &&
(fat32Bpb.oem_name[5] != 0x49 || fat32Bpb.oem_name[6] != 0x48 || fat32Bpb.oem_name[7] != 0x43))
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fat32Bpb.oem_name);
}
_sectorsPerCluster = fat32Bpb.spc;
XmlFsType.ClusterSize = (uint)(fat32Bpb.bps * fat32Bpb.spc);
_reservedSectors = fat32Bpb.rsectors;
if (fat32Bpb.big_sectors == 0 &&
fat32Bpb.signature == 0x28)
{
XmlFsType.Clusters = shortFat32Bpb.huge_sectors / shortFat32Bpb.spc;
}
else if (fat32Bpb.sectors == 0)
{
XmlFsType.Clusters = fat32Bpb.big_sectors / fat32Bpb.spc;
}
else
{
XmlFsType.Clusters = (ulong)(fat32Bpb.sectors / fat32Bpb.spc);
}
_sectorsPerFat = fat32Bpb.big_spfat;
XmlFsType.VolumeSerial = $"{fat32Bpb.serial_no:X8}";
_statfs.Id = new FileSystemId
{
IsInt = true,
Serial32 = fat32Bpb.serial_no
};
if ((fat32Bpb.flags & 0xF8) == 0x00)
{
if ((fat32Bpb.flags & 0x01) == 0x01)
{
XmlFsType.Dirty = true;
}
}
if ((fat32Bpb.mirror_flags & 0x80) == 0x80)
{
_useFirstFat = (fat32Bpb.mirror_flags & 0xF) != 1;
}
if (fat32Bpb.signature == 0x29)
{
XmlFsType.VolumeName = StringHandlers.SpacePaddedToString(fat32Bpb.volume_label, Encoding);
XmlFsType.VolumeName = XmlFsType.VolumeName?.Replace("\0", "");
}
// Check that jumps to a correct boot code position and has boot signature set.
// This will mean that the volume will boot, even if just to say "this is not bootable change disk"......
XmlFsType.Bootable =
(fat32Bpb.jump[0] == 0xEB && fat32Bpb.jump[1] >= minBootNearJump && fat32Bpb.jump[1] < 0x80) ||
(fat32Bpb.jump[0] == 0xE9 && fat32Bpb.jump.Length >= 3 &&
BitConverter.ToUInt16(fat32Bpb.jump, 1) >= minBootNearJump &&
BitConverter.ToUInt16(fat32Bpb.jump, 1) <= 0x1FC);
sectorsPerRealSector = fat32Bpb.bps / imagePlugin.Info.SectorSize;
_sectorsPerCluster *= sectorsPerRealSector;
// First root directory sector
_firstClusterSector =
((ulong)((fat32Bpb.big_spfat * fat32Bpb.fats_no) + fat32Bpb.rsectors) * sectorsPerRealSector) -
(2 * _sectorsPerCluster);
if (fat32Bpb.fsinfo_sector + partition.Start <= partition.End)
{
byte[] fsinfoSector = imagePlugin.ReadSector(fat32Bpb.fsinfo_sector + partition.Start);
FsInfoSector fsInfo = Marshal.ByteArrayToStructureLittleEndian <FsInfoSector>(fsinfoSector);
if (fsInfo.signature1 == FSINFO_SIGNATURE1 &&
fsInfo.signature2 == FSINFO_SIGNATURE2 &&
fsInfo.signature3 == FSINFO_SIGNATURE3)
{
if (fsInfo.free_clusters < 0xFFFFFFFF)
{
XmlFsType.FreeClusters = fsInfo.free_clusters;
XmlFsType.FreeClustersSpecified = true;
}
}
}
break;
}
// Some fields could overflow fake BPB, those will be handled below
case BpbKind.Atari:
{
ushort sum = 0;
for (int i = 0; i < bpbSector.Length; i += 2)
{
sum += BigEndianBitConverter.ToUInt16(bpbSector, i);
}
// TODO: Check this
if (sum == 0x1234)
{
XmlFsType.Bootable = true;
}
// BGM changes the bytes per sector instead of changing the sectors per cluster. Why?! WHY!?
uint ratio = fakeBpb.bps / imagePlugin.Info.SectorSize;
fakeBpb.bps = (ushort)imagePlugin.Info.SectorSize;
fakeBpb.spc = (byte)(fakeBpb.spc * ratio);
fakeBpb.rsectors = (ushort)(fakeBpb.rsectors * ratio);
fakeBpb.big_sectors = fakeBpb.sectors * ratio;
fakeBpb.sectors = 0;
fakeBpb.spfat = (ushort)(fakeBpb.spfat * ratio);
fakeBpb.sptrk = (ushort)(fakeBpb.sptrk * ratio);
break;
}
case BpbKind.Human:
// If not debug set Human68k namespace and ShiftJIS codepage as defaults
if (!_debug)
{
_namespace = Namespace.Human;
}
XmlFsType.Bootable = true;
break;
}
ulong firstRootSector = 0;
if (!_fat32)
{
// This is to support FAT partitions on hybrid ISO/USB images
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
fakeBpb.bps *= 4;
fakeBpb.spc /= 4;
fakeBpb.spfat /= 4;
fakeBpb.hsectors /= 4;
fakeBpb.sptrk /= 4;
fakeBpb.rsectors /= 4;
if (fakeBpb.spc == 0)
{
fakeBpb.spc = 1;
}
}
ulong clusters;
if (bpbKind != BpbKind.Human)
{
int reservedSectors = fakeBpb.rsectors + (fakeBpb.fats_no * fakeBpb.spfat) +
(fakeBpb.root_ent * 32 / fakeBpb.bps);
if (fakeBpb.sectors == 0)
{
clusters = (ulong)(fakeBpb.spc == 0 ? fakeBpb.big_sectors - reservedSectors
: (fakeBpb.big_sectors - reservedSectors) / fakeBpb.spc);
}
else
{
clusters = (ulong)(fakeBpb.spc == 0 ? fakeBpb.sectors - reservedSectors
: (fakeBpb.sectors - reservedSectors) / fakeBpb.spc);
}
}
else
{
clusters = humanBpb.clusters == 0 ? humanBpb.big_clusters : humanBpb.clusters;
}
// This will walk all the FAT entries and check if they're valid FAT12 or FAT16 entries.
// If the whole table is valid in both senses, it considers the type entry in the BPB.
// BeOS is known to set the type as FAT16 but treat it as FAT12.
if (!_fat12 &&
!_fat16)
{
if (clusters < 4089)
{
ushort[] fat12 = new ushort[clusters];
_reservedSectors = fakeBpb.rsectors;
sectorsPerRealSector = fakeBpb.bps / imagePlugin.Info.SectorSize;
_fatFirstSector = partition.Start + (_reservedSectors * sectorsPerRealSector);
byte[] fatBytes = imagePlugin.ReadSectors(_fatFirstSector, fakeBpb.spfat);
int pos = 0;
for (int i = 0; i + 3 < fatBytes.Length && pos < fat12.Length; i += 3)
{
fat12[pos++] = (ushort)(((fatBytes[i + 1] & 0xF) << 8) + fatBytes[i + 0]);
if (pos >= fat12.Length)
{
break;
}
fat12[pos++] = (ushort)(((fatBytes[i + 1] & 0xF0) >> 4) + (fatBytes[i + 2] << 4));
}
bool fat12Valid = fat12[0] >= FAT12_RESERVED && fat12[1] >= FAT12_RESERVED;
foreach (ushort entry in fat12)
{
if (entry >= FAT12_RESERVED ||
entry <= clusters)
{
continue;
}
fat12Valid = false;
break;
}
ushort[] fat16 = MemoryMarshal.Cast <byte, ushort>(fatBytes).ToArray();
bool fat16Valid = fat16[0] >= FAT16_RESERVED && fat16[1] >= 0x3FF0;
foreach (ushort entry in fat16)
{
if (entry >= FAT16_RESERVED ||
entry <= clusters)
{
continue;
}
fat16Valid = false;
break;
}
_fat12 = fat12Valid;
_fat16 = fat16Valid;
// Check BPB type
if (_fat12 == _fat16)
{
_fat12 = Encoding.ASCII.GetString(fakeBpb.fs_type) == "FAT12 ";
_fat16 = Encoding.ASCII.GetString(fakeBpb.fs_type) == "FAT16 ";
}
}
else
{
_fat16 = true;
}
}
if (_fat12)
{
XmlFsType.Type = "FAT12";
}
else if (_fat16)
{
XmlFsType.Type = "FAT16";
}
if (bpbKind == BpbKind.Atari)
{
if (atariBpb.serial_no[0] != 0x49 ||
atariBpb.serial_no[1] != 0x48 ||
atariBpb.serial_no[2] != 0x43)
{
XmlFsType.VolumeSerial =
$"{atariBpb.serial_no[0]:X2}{atariBpb.serial_no[1]:X2}{atariBpb.serial_no[2]:X2}";
_statfs.Id = new FileSystemId
{
IsInt = true,
Serial32 = (uint)((atariBpb.serial_no[0] << 16) + (atariBpb.serial_no[1] << 8) +
atariBpb.serial_no[2])
};
}
XmlFsType.SystemIdentifier = StringHandlers.CToString(atariBpb.oem_name);
if (string.IsNullOrEmpty(XmlFsType.SystemIdentifier))
{
XmlFsType.SystemIdentifier = null;
}
}
else if (fakeBpb.oem_name != null)
{
if (fakeBpb.oem_name[5] != 0x49 ||
fakeBpb.oem_name[6] != 0x48 ||
fakeBpb.oem_name[7] != 0x43)
{
// Later versions of Windows create a DOS 3 BPB without OEM name on 8 sectors/track floppies
// OEM ID should be ASCII, otherwise ignore it
if (fakeBpb.oem_name[0] >= 0x20 &&
fakeBpb.oem_name[0] <= 0x7F &&
fakeBpb.oem_name[1] >= 0x20 &&
fakeBpb.oem_name[1] <= 0x7F &&
fakeBpb.oem_name[2] >= 0x20 &&
fakeBpb.oem_name[2] <= 0x7F &&
fakeBpb.oem_name[3] >= 0x20 &&
fakeBpb.oem_name[3] <= 0x7F &&
fakeBpb.oem_name[4] >= 0x20 &&
fakeBpb.oem_name[4] <= 0x7F &&
fakeBpb.oem_name[5] >= 0x20 &&
fakeBpb.oem_name[5] <= 0x7F &&
fakeBpb.oem_name[6] >= 0x20 &&
fakeBpb.oem_name[6] <= 0x7F &&
fakeBpb.oem_name[7] >= 0x20 &&
fakeBpb.oem_name[7] <= 0x7F)
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fakeBpb.oem_name);
}
else if (fakeBpb.oem_name[0] < 0x20 &&
fakeBpb.oem_name[1] >= 0x20 &&
fakeBpb.oem_name[1] <= 0x7F &&
fakeBpb.oem_name[2] >= 0x20 &&
fakeBpb.oem_name[2] <= 0x7F &&
fakeBpb.oem_name[3] >= 0x20 &&
fakeBpb.oem_name[3] <= 0x7F &&
fakeBpb.oem_name[4] >= 0x20 &&
fakeBpb.oem_name[4] <= 0x7F &&
fakeBpb.oem_name[5] >= 0x20 &&
fakeBpb.oem_name[5] <= 0x7F &&
fakeBpb.oem_name[6] >= 0x20 &&
fakeBpb.oem_name[6] <= 0x7F &&
fakeBpb.oem_name[7] >= 0x20 &&
fakeBpb.oem_name[7] <= 0x7F)
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fakeBpb.oem_name, Encoding, start: 1);
}
}
if (fakeBpb.signature == 0x28 ||
fakeBpb.signature == 0x29)
{
XmlFsType.VolumeSerial = $"{fakeBpb.serial_no:X8}";
_statfs.Id = new FileSystemId
{
IsInt = true,
Serial32 = fakeBpb.serial_no
};
}
}
XmlFsType.Clusters = clusters;
_sectorsPerCluster = fakeBpb.spc;
XmlFsType.ClusterSize = (uint)(fakeBpb.bps * fakeBpb.spc);
_reservedSectors = fakeBpb.rsectors;
_sectorsPerFat = fakeBpb.spfat;
if (fakeBpb.signature == 0x28 ||
fakeBpb.signature == 0x29 ||
andosOemCorrect)
{
if ((fakeBpb.flags & 0xF8) == 0x00)
{
if ((fakeBpb.flags & 0x01) == 0x01)
{
XmlFsType.Dirty = true;
}
}
if (fakeBpb.signature == 0x29 || andosOemCorrect)
{
XmlFsType.VolumeName = StringHandlers.SpacePaddedToString(fakeBpb.volume_label, Encoding);
XmlFsType.VolumeName = XmlFsType.VolumeName?.Replace("\0", "");
}
}
// Workaround that PCExchange jumps into "FAT16 "...
if (XmlFsType.SystemIdentifier == "PCX 2.0 ")
{
fakeBpb.jump[1] += 8;
}
// Check that jumps to a correct boot code position and has boot signature set.
// This will mean that the volume will boot, even if just to say "this is not bootable change disk"......
if (XmlFsType.Bootable == false &&
fakeBpb.jump != null)
{
XmlFsType.Bootable |=
(fakeBpb.jump[0] == 0xEB && fakeBpb.jump[1] >= minBootNearJump && fakeBpb.jump[1] < 0x80) ||
(fakeBpb.jump[0] == 0xE9 && fakeBpb.jump.Length >= 3 &&
BitConverter.ToUInt16(fakeBpb.jump, 1) >= minBootNearJump &&
BitConverter.ToUInt16(fakeBpb.jump, 1) <= 0x1FC);
}
// First root directory sector
firstRootSector =
((ulong)((fakeBpb.spfat * fakeBpb.fats_no) + fakeBpb.rsectors) * sectorsPerRealSector) +
partition.Start;
sectorsForRootDirectory = (uint)(fakeBpb.root_ent * 32 / imagePlugin.Info.SectorSize);
sectorsPerRealSector = fakeBpb.bps / imagePlugin.Info.SectorSize;
_sectorsPerCluster *= sectorsPerRealSector;
}
_firstClusterSector += partition.Start;
_image = imagePlugin;
if (_fat32)
{
_fatEntriesPerSector = imagePlugin.Info.SectorSize / 4;
}
else if (_fat16)
{
_fatEntriesPerSector = imagePlugin.Info.SectorSize / 2;
}
else
{
_fatEntriesPerSector = imagePlugin.Info.SectorSize * 2 / 3;
}
_fatFirstSector = partition.Start + (_reservedSectors * sectorsPerRealSector);
_rootDirectoryCache = new Dictionary <string, CompleteDirectoryEntry>();
byte[] rootDirectory;
if (!_fat32)
{
_firstClusterSector = firstRootSector + sectorsForRootDirectory - (_sectorsPerCluster * 2);
rootDirectory = imagePlugin.ReadSectors(firstRootSector, sectorsForRootDirectory);
if (bpbKind == BpbKind.DecRainbow)
{
var rootMs = new MemoryStream();
foreach (byte[] tmp in from ulong rootSector in new[]
{
0x17, 0x19, 0x1B, 0x1D, 0x1E, 0x20
} select imagePlugin.ReadSector(rootSector))
{
rootMs.Write(tmp, 0, tmp.Length);
}
rootDirectory = rootMs.ToArray();
}
}
else
{
if (rootDirectoryCluster == 0)
{
return(Errno.InvalidArgument);
}
var rootMs = new MemoryStream();
uint[] rootDirectoryClusters = GetClusters(rootDirectoryCluster);
foreach (byte[] buffer in rootDirectoryClusters.Select(cluster =>
imagePlugin.
ReadSectors(_firstClusterSector + (cluster * _sectorsPerCluster),
_sectorsPerCluster)))
{
rootMs.Write(buffer, 0, buffer.Length);
}
rootDirectory = rootMs.ToArray();
// OS/2 FAT32.IFS uses LFN instead of .LONGNAME
if (_namespace == Namespace.Os2)
{
_namespace = Namespace.Lfn;
}
}
if (rootDirectory is null)
{
return(Errno.InvalidArgument);
}
byte[] lastLfnName = null;
byte lastLfnChecksum = 0;
for (int i = 0; i < rootDirectory.Length; i += Marshal.SizeOf <DirectoryEntry>())
{
DirectoryEntry entry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryEntry>(rootDirectory, i,
Marshal.SizeOf <DirectoryEntry>());
if (entry.filename[0] == DIRENT_FINISHED)
{
break;
}
if (entry.attributes.HasFlag(FatAttributes.LFN))
{
if (_namespace != Namespace.Lfn &&
_namespace != Namespace.Ecs)
{
continue;
}
LfnEntry lfnEntry =
Marshal.ByteArrayToStructureLittleEndian <LfnEntry>(rootDirectory, i,
Marshal.SizeOf <LfnEntry>());
int lfnSequence = lfnEntry.sequence & LFN_MASK;
if ((lfnEntry.sequence & LFN_ERASED) > 0)
{
continue;
}
if ((lfnEntry.sequence & LFN_LAST) > 0)
{
lastLfnName = new byte[lfnSequence * 26];
lastLfnChecksum = lfnEntry.checksum;
}
if (lastLfnName is null)
{
continue;
}
if (lfnEntry.checksum != lastLfnChecksum)
{
continue;
}
lfnSequence--;
Array.Copy(lfnEntry.name1, 0, lastLfnName, lfnSequence * 26, 10);
Array.Copy(lfnEntry.name2, 0, lastLfnName, (lfnSequence * 26) + 10, 12);
Array.Copy(lfnEntry.name3, 0, lastLfnName, (lfnSequence * 26) + 22, 4);
continue;
}
// Not a correct entry
if (entry.filename[0] < DIRENT_MIN &&
entry.filename[0] != DIRENT_E5)
{
continue;
}
// Self
if (Encoding.GetString(entry.filename).TrimEnd() == ".")
{
continue;
}
// Parent
if (Encoding.GetString(entry.filename).TrimEnd() == "..")
{
continue;
}
// Deleted
if (entry.filename[0] == DIRENT_DELETED)
{
continue;
}
string filename;
if (entry.attributes.HasFlag(FatAttributes.VolumeLabel))
{
byte[] fullname = new byte[11];
Array.Copy(entry.filename, 0, fullname, 0, 8);
Array.Copy(entry.extension, 0, fullname, 8, 3);
string volname = Encoding.GetString(fullname).Trim();
if (!string.IsNullOrEmpty(volname))
{
XmlFsType.VolumeName =
entry.caseinfo.HasFlag(CaseInfo.AllLowerCase) && _namespace == Namespace.Nt
? volname.ToLower() : volname;
}
XmlFsType.VolumeName = XmlFsType.VolumeName?.Replace("\0", "");
if (entry.ctime > 0 &&
entry.cdate > 0)
{
XmlFsType.CreationDate = DateHandlers.DosToDateTime(entry.cdate, entry.ctime);
if (entry.ctime_ms > 0)
{
XmlFsType.CreationDate = XmlFsType.CreationDate.AddMilliseconds(entry.ctime_ms * 10);
}
XmlFsType.CreationDateSpecified = true;
}
if (entry.mtime > 0 &&
entry.mdate > 0)
{
XmlFsType.ModificationDate = DateHandlers.DosToDateTime(entry.mdate, entry.mtime);
XmlFsType.ModificationDateSpecified = true;
}
continue;
}
var completeEntry = new CompleteDirectoryEntry
{
Dirent = entry
};
if ((_namespace == Namespace.Lfn || _namespace == Namespace.Ecs) &&
lastLfnName != null)
{
byte calculatedLfnChecksum = LfnChecksum(entry.filename, entry.extension);
if (calculatedLfnChecksum == lastLfnChecksum)
{
filename = StringHandlers.CToString(lastLfnName, Encoding.Unicode, true);
completeEntry.Lfn = filename;
lastLfnName = null;
lastLfnChecksum = 0;
}
}
if (entry.filename[0] == DIRENT_E5)
{
entry.filename[0] = DIRENT_DELETED;
}
string name = Encoding.GetString(entry.filename).TrimEnd();
string extension = Encoding.GetString(entry.extension).TrimEnd();
if (_namespace == Namespace.Nt)
{
if (entry.caseinfo.HasFlag(CaseInfo.LowerCaseExtension))
{
extension = extension.ToLower(CultureInfo.CurrentCulture);
}
if (entry.caseinfo.HasFlag(CaseInfo.LowerCaseBasename))
{
name = name.ToLower(CultureInfo.CurrentCulture);
}
}
if (extension != "")
{
filename = name + "." + extension;
}
else
{
filename = name;
}
if (name == "" &&
extension == "")
{
AaruConsole.DebugWriteLine("FAT filesystem", "Found empty filename in root directory");
if (!_debug ||
(entry.size > 0 && entry.start_cluster == 0))
{
continue; // Skip invalid name
}
// If debug, add it
name = ":{EMPTYNAME}:";
// Try to create a unique filename with an extension from 000 to 999
for (int uniq = 0; uniq < 1000; uniq++)
{
extension = $"{uniq:D03}";
if (!_rootDirectoryCache.ContainsKey($"{name}.{extension}"))
{
break;
}
}
// If we couldn't find it, just skip over
if (_rootDirectoryCache.ContainsKey($"{name}.{extension}"))
{
continue;
}
}
// Atari ST allows slash AND colon so cannot simply substitute one for the other like in Mac filesystems
filename = filename.Replace('/', '\u2215');
completeEntry.Shortname = filename;
if (_namespace == Namespace.Human)
{
HumanDirectoryEntry humanEntry =
Marshal.ByteArrayToStructureLittleEndian <HumanDirectoryEntry>(rootDirectory, i,
Marshal.SizeOf <HumanDirectoryEntry>());
completeEntry.HumanDirent = humanEntry;
name = StringHandlers.CToString(humanEntry.name1, Encoding).TrimEnd();
extension = StringHandlers.CToString(humanEntry.extension, Encoding).TrimEnd();
string name2 = StringHandlers.CToString(humanEntry.name2, Encoding).TrimEnd();
if (extension != "")
{
filename = name + name2 + "." + extension;
}
else
{
filename = name + name2;
}
completeEntry.HumanName = filename;
}
if (!_fat32 &&
filename == "EA DATA. SF")
{
_eaDirEntry = entry;
lastLfnName = null;
lastLfnChecksum = 0;
if (_debug)
{
_rootDirectoryCache[completeEntry.ToString()] = completeEntry;
}
continue;
}
_rootDirectoryCache[completeEntry.ToString()] = completeEntry;
lastLfnName = null;
lastLfnChecksum = 0;
}
XmlFsType.VolumeName = XmlFsType.VolumeName?.Trim();
_statfs.Blocks = XmlFsType.Clusters;
switch (bpbKind)
{
case BpbKind.Hardcoded:
_statfs.Type = $"Microsoft FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.Atari:
_statfs.Type = $"Atari FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.Msx:
_statfs.Type = $"MSX FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.Dos2:
case BpbKind.Dos3:
case BpbKind.Dos32:
case BpbKind.Dos33:
case BpbKind.ShortExtended:
case BpbKind.Extended:
_statfs.Type = $"Microsoft FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.ShortFat32:
case BpbKind.LongFat32:
_statfs.Type = XmlFsType.Type == "FAT+" ? "FAT+" : "Microsoft FAT32";
break;
case BpbKind.Andos:
_statfs.Type = $"ANDOS FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.Apricot:
_statfs.Type = $"Apricot FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.DecRainbow:
_statfs.Type = $"DEC FAT{(_fat16 ? "16" : "12")}";
break;
case BpbKind.Human:
_statfs.Type = $"Human68k FAT{(_fat16 ? "16" : "12")}";
break;
default: throw new ArgumentOutOfRangeException();
}
_bytesPerCluster = _sectorsPerCluster * imagePlugin.Info.SectorSize;
ushort[] _firstFatEntries = new ushort[_statfs.Blocks];
ushort[] _secondFatEntries = new ushort[_statfs.Blocks];
bool _firstFatValid = true;
bool _secondFatValid = true;
if (_fat12)
{
AaruConsole.DebugWriteLine("FAT plugin", "Reading FAT12");
byte[] fatBytes = imagePlugin.ReadSectors(_fatFirstSector, _sectorsPerFat);
int pos = 0;
for (int i = 0; i + 3 < fatBytes.Length && pos < _firstFatEntries.Length; i += 3)
{
_firstFatEntries[pos++] = (ushort)(((fatBytes[i + 1] & 0xF) << 8) + fatBytes[i + 0]);
if (pos >= _firstFatEntries.Length)
{
break;
}
_firstFatEntries[pos++] = (ushort)(((fatBytes[i + 1] & 0xF0) >> 4) + (fatBytes[i + 2] << 4));
}
fatBytes = imagePlugin.ReadSectors(_fatFirstSector + _sectorsPerFat, _sectorsPerFat);
_fatEntries = new ushort[_statfs.Blocks];
pos = 0;
for (int i = 0; i + 3 < fatBytes.Length && pos < _secondFatEntries.Length; i += 3)
{
_secondFatEntries[pos++] = (ushort)(((fatBytes[i + 1] & 0xF) << 8) + fatBytes[i + 0]);
if (pos >= _secondFatEntries.Length)
{
break;
}
_secondFatEntries[pos++] = (ushort)(((fatBytes[i + 1] & 0xF0) >> 4) + (fatBytes[i + 2] << 4));
}
foreach (ushort entry in _firstFatEntries)
{
if (entry >= FAT12_RESERVED ||
entry <= _statfs.Blocks)
{
continue;
}
_firstFatValid = false;
break;
}
foreach (ushort entry in _secondFatEntries)
{
if (entry >= FAT12_RESERVED ||
entry <= _statfs.Blocks)
{
continue;
}
_secondFatValid = false;
break;
}
if (_firstFatValid == _secondFatValid)
{
_fatEntries = _useFirstFat ? _firstFatEntries : _secondFatEntries;
}
else if (_firstFatValid)
{
_fatEntries = _firstFatEntries;
}
else
{
_fatEntries = _secondFatEntries;
}
}
else if (_fat16)
{
AaruConsole.DebugWriteLine("FAT plugin", "Reading FAT16");
byte[] fatBytes = imagePlugin.ReadSectors(_fatFirstSector, _sectorsPerFat);
AaruConsole.DebugWriteLine("FAT plugin", "Casting FAT");
_firstFatEntries = MemoryMarshal.Cast <byte, ushort>(fatBytes).ToArray();
fatBytes = imagePlugin.ReadSectors(_fatFirstSector + _sectorsPerFat, _sectorsPerFat);
AaruConsole.DebugWriteLine("FAT plugin", "Casting FAT");
_secondFatEntries = MemoryMarshal.Cast <byte, ushort>(fatBytes).ToArray();
foreach (ushort entry in _firstFatEntries)
{
if (entry >= FAT16_RESERVED ||
entry <= _statfs.Blocks)
{
continue;
}
_firstFatValid = false;
break;
}
foreach (ushort entry in _secondFatEntries)
{
if (entry >= FAT16_RESERVED ||
entry <= _statfs.Blocks)
{
continue;
}
_secondFatValid = false;
break;
}
if (_firstFatValid == _secondFatValid)
{
_fatEntries = _useFirstFat ? _firstFatEntries : _secondFatEntries;
}
else if (_firstFatValid)
{
_fatEntries = _firstFatEntries;
}
else
{
_fatEntries = _secondFatEntries;
}
}
// TODO: Check how this affects international filenames
_cultureInfo = new CultureInfo("en-US", false);
_directoryCache = new Dictionary <string, Dictionary <string, CompleteDirectoryEntry> >();
// Check it is really an OS/2 EA file
if (_eaDirEntry.start_cluster != 0)
{
CacheEaData();
ushort eamagic = BitConverter.ToUInt16(_cachedEaData, 0);
if (eamagic != EADATA_MAGIC)
{
_eaDirEntry = new DirectoryEntry();
_cachedEaData = null;
}
else
{
_eaCache = new Dictionary <string, Dictionary <string, byte[]> >();
}
}
else if (_fat32)
{
_eaCache = new Dictionary <string, Dictionary <string, byte[]> >();
}
// Check OS/2 .LONGNAME
if (_eaCache != null &&
(_namespace == Namespace.Os2 || _namespace == Namespace.Ecs) &&
!_fat32)
{
List <KeyValuePair <string, CompleteDirectoryEntry> > rootFilesWithEas =
_rootDirectoryCache.Where(t => t.Value.Dirent.ea_handle != 0).ToList();
foreach (KeyValuePair <string, CompleteDirectoryEntry> fileWithEa in rootFilesWithEas)
{
Dictionary <string, byte[]> eas = GetEas(fileWithEa.Value.Dirent.ea_handle);
if (eas is null)
{
continue;
}
if (!eas.TryGetValue("com.microsoft.os2.longname", out byte[] longnameEa))
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("IBM437");
information = "";
var sb = new StringBuilder();
XmlFsType = new FileSystemType();
uint sectorsPerBpb = imagePlugin.Info.SectorSize < 512 ? 512 / imagePlugin.Info.SectorSize : 1;
byte[] bpbSector = imagePlugin.ReadSectors(0 + partition.Start, sectorsPerBpb);
BpbKind bpbKind = DetectBpbKind(bpbSector, imagePlugin, partition, out BiosParameterBlockEbpb fakeBpb,
out HumanParameterBlock humanBpb, out AtariParameterBlock atariBpb,
out byte minBootNearJump, out bool andosOemCorrect, out bool bootable);
bool isFat12 = false;
bool isFat16 = false;
bool isFat32 = false;
ulong rootDirectorySector = 0;
string extraInfo = null;
string bootChk = null;
XmlFsType.Bootable = bootable;
// This is needed because for FAT16, GEMDOS increases bytes per sector count instead of using big_sectors field.
uint sectorsPerRealSector;
// This is needed because some OSes don't put volume label as first entry in the root directory
uint sectorsForRootDirectory = 0;
switch (bpbKind)
{
case BpbKind.DecRainbow:
case BpbKind.Hardcoded:
case BpbKind.Msx:
case BpbKind.Apricot:
isFat12 = true;
break;
case BpbKind.ShortFat32:
case BpbKind.LongFat32:
{
isFat32 = true;
Fat32ParameterBlock fat32Bpb =
Marshal.ByteArrayToStructureLittleEndian <Fat32ParameterBlock>(bpbSector);
Fat32ParameterBlockShort shortFat32Bpb =
Marshal.ByteArrayToStructureLittleEndian <Fat32ParameterBlockShort>(bpbSector);
// This is to support FAT partitions on hybrid ISO/USB images
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
fat32Bpb.bps *= 4;
fat32Bpb.spc /= 4;
fat32Bpb.big_spfat /= 4;
fat32Bpb.hsectors /= 4;
fat32Bpb.sptrk /= 4;
}
if (fat32Bpb.version != 0)
{
sb.AppendLine("FAT+");
XmlFsType.Type = "FAT+";
}
else
{
sb.AppendLine("Microsoft FAT32");
XmlFsType.Type = "FAT32";
}
if (fat32Bpb.oem_name != null)
{
if (fat32Bpb.oem_name[5] == 0x49 &&
fat32Bpb.oem_name[6] == 0x48 &&
fat32Bpb.oem_name[7] == 0x43)
{
sb.AppendLine("Volume has been modified by Windows 9x/Me Volume Tracker.");
}
else
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fat32Bpb.oem_name);
}
}
if (!string.IsNullOrEmpty(XmlFsType.SystemIdentifier))
{
sb.AppendFormat("OEM Name: {0}", XmlFsType.SystemIdentifier.Trim()).AppendLine();
}
sb.AppendFormat("{0} bytes per sector.", fat32Bpb.bps).AppendLine();
sb.AppendFormat("{0} sectors per cluster.", fat32Bpb.spc).AppendLine();
XmlFsType.ClusterSize = (uint)(fat32Bpb.bps * fat32Bpb.spc);
sb.AppendFormat("{0} sectors reserved between BPB and FAT.", fat32Bpb.rsectors).AppendLine();
if (fat32Bpb.big_sectors == 0 &&
fat32Bpb.signature == 0x28)
{
sb.AppendFormat("{0} sectors on volume ({1} bytes).", shortFat32Bpb.huge_sectors,
shortFat32Bpb.huge_sectors * shortFat32Bpb.bps).AppendLine();
XmlFsType.Clusters = shortFat32Bpb.huge_sectors / shortFat32Bpb.spc;
}
else
{
sb.AppendFormat("{0} sectors on volume ({1} bytes).", fat32Bpb.big_sectors,
fat32Bpb.big_sectors * fat32Bpb.bps).AppendLine();
XmlFsType.Clusters = fat32Bpb.big_sectors / fat32Bpb.spc;
}
sb.AppendFormat("{0} clusters on volume.", XmlFsType.Clusters).AppendLine();
sb.AppendFormat("Media descriptor: 0x{0:X2}", fat32Bpb.media).AppendLine();
sb.AppendFormat("{0} sectors per FAT.", fat32Bpb.big_spfat).AppendLine();
sb.AppendFormat("{0} sectors per track.", fat32Bpb.sptrk).AppendLine();
sb.AppendFormat("{0} heads.", fat32Bpb.heads).AppendLine();
sb.AppendFormat("{0} hidden sectors before BPB.", fat32Bpb.hsectors).AppendLine();
sb.AppendFormat("Cluster of root directory: {0}", fat32Bpb.root_cluster).AppendLine();
sb.AppendFormat("Sector of FSINFO structure: {0}", fat32Bpb.fsinfo_sector).AppendLine();
sb.AppendFormat("Sector of backup FAT32 parameter block: {0}", fat32Bpb.backup_sector).AppendLine();
sb.AppendFormat("Drive number: 0x{0:X2}", fat32Bpb.drive_no).AppendLine();
sb.AppendFormat("Volume Serial Number: 0x{0:X8}", fat32Bpb.serial_no).AppendLine();
XmlFsType.VolumeSerial = $"{fat32Bpb.serial_no:X8}";
if ((fat32Bpb.flags & 0xF8) == 0x00)
{
if ((fat32Bpb.flags & 0x01) == 0x01)
{
sb.AppendLine("Volume should be checked on next mount.");
XmlFsType.Dirty = true;
}
if ((fat32Bpb.flags & 0x02) == 0x02)
{
sb.AppendLine("Disk surface should be on next mount.");
}
}
if ((fat32Bpb.mirror_flags & 0x80) == 0x80)
{
sb.AppendFormat("FATs are out of sync. FAT #{0} is in use.", fat32Bpb.mirror_flags & 0xF).
AppendLine();
}
else
{
sb.AppendLine("All copies of FAT are the same.");
}
if ((fat32Bpb.mirror_flags & 0x6F20) == 0x6F20)
{
sb.AppendLine("DR-DOS will boot this FAT32 using CHS.");
}
else if ((fat32Bpb.mirror_flags & 0x4F20) == 0x4F20)
{
sb.AppendLine("DR-DOS will boot this FAT32 using LBA.");
}
if (fat32Bpb.signature == 0x29)
{
XmlFsType.VolumeName = StringHandlers.SpacePaddedToString(fat32Bpb.volume_label, Encoding);
XmlFsType.VolumeName = XmlFsType.VolumeName?.Replace("\0", "");
sb.AppendFormat("Filesystem type: {0}", Encoding.ASCII.GetString(fat32Bpb.fs_type)).
AppendLine();
bootChk = Sha1Context.Data(fat32Bpb.boot_code, out _);
}
else
{
bootChk = Sha1Context.Data(shortFat32Bpb.boot_code, out _);
}
// Check that jumps to a correct boot code position and has boot signature set.
// This will mean that the volume will boot, even if just to say "this is not bootable change disk"......
XmlFsType.Bootable =
(fat32Bpb.jump[0] == 0xEB && fat32Bpb.jump[1] >= minBootNearJump && fat32Bpb.jump[1] < 0x80) ||
(fat32Bpb.jump[0] == 0xE9 && fat32Bpb.jump.Length >= 3 &&
BitConverter.ToUInt16(fat32Bpb.jump, 1) >= minBootNearJump &&
BitConverter.ToUInt16(fat32Bpb.jump, 1) <= 0x1FC);
sectorsPerRealSector = fat32Bpb.bps / imagePlugin.Info.SectorSize;
// First root directory sector
rootDirectorySector =
(ulong)(((fat32Bpb.root_cluster - 2) * fat32Bpb.spc) + (fat32Bpb.big_spfat * fat32Bpb.fats_no) +
fat32Bpb.rsectors) * sectorsPerRealSector;
sectorsForRootDirectory = 1;
if (fat32Bpb.fsinfo_sector + partition.Start <= partition.End)
{
byte[] fsinfoSector = imagePlugin.ReadSector(fat32Bpb.fsinfo_sector + partition.Start);
FsInfoSector fsInfo = Marshal.ByteArrayToStructureLittleEndian <FsInfoSector>(fsinfoSector);
if (fsInfo.signature1 == FSINFO_SIGNATURE1 &&
fsInfo.signature2 == FSINFO_SIGNATURE2 &&
fsInfo.signature3 == FSINFO_SIGNATURE3)
{
if (fsInfo.free_clusters < 0xFFFFFFFF)
{
sb.AppendFormat("{0} free clusters", fsInfo.free_clusters).AppendLine();
XmlFsType.FreeClusters = fsInfo.free_clusters;
XmlFsType.FreeClustersSpecified = true;
}
if (fsInfo.last_cluster > 2 &&
fsInfo.last_cluster < 0xFFFFFFFF)
{
sb.AppendFormat("Last allocated cluster {0}", fsInfo.last_cluster).AppendLine();
}
}
}
break;
}
// Some fields could overflow fake BPB, those will be handled below
case BpbKind.Atari:
{
ushort sum = 0;
for (int i = 0; i < bpbSector.Length; i += 2)
{
sum += BigEndianBitConverter.ToUInt16(bpbSector, i);
}
// TODO: Check this
if (sum == 0x1234)
{
XmlFsType.Bootable = true;
var atariSb = new StringBuilder();
atariSb.AppendFormat("cmdload will be loaded with value {0:X4}h",
BigEndianBitConverter.ToUInt16(bpbSector, 0x01E)).AppendLine();
atariSb.AppendFormat("Boot program will be loaded at address {0:X4}h", atariBpb.ldaaddr).
AppendLine();
atariSb.AppendFormat("FAT and directory will be cached at address {0:X4}h", atariBpb.fatbuf).
AppendLine();
if (atariBpb.ldmode == 0)
{
byte[] tmp = new byte[8];
Array.Copy(atariBpb.fname, 0, tmp, 0, 8);
string fname = Encoding.ASCII.GetString(tmp).Trim();
tmp = new byte[3];
Array.Copy(atariBpb.fname, 8, tmp, 0, 3);
string extension = Encoding.ASCII.GetString(tmp).Trim();
string filename;
if (string.IsNullOrEmpty(extension))
{
filename = fname;
}
else
{
filename = fname + "." + extension;
}
atariSb.AppendFormat("Boot program resides in file \"{0}\"", filename).AppendLine();
}
else
{
atariSb.
AppendFormat("Boot program starts in sector {0} and is {1} sectors long ({2} bytes)",
atariBpb.ssect, atariBpb.sectcnt, atariBpb.sectcnt * atariBpb.bps).
AppendLine();
}
extraInfo = atariSb.ToString();
}
break;
}
case BpbKind.Human:
XmlFsType.Bootable = true;
break;
}
if (!isFat32)
{
// This is to support FAT partitions on hybrid ISO/USB images
if (imagePlugin.Info.XmlMediaType == XmlMediaType.OpticalDisc)
{
fakeBpb.bps *= 4;
fakeBpb.spc /= 4;
fakeBpb.spfat /= 4;
fakeBpb.hsectors /= 4;
fakeBpb.sptrk /= 4;
fakeBpb.rsectors /= 4;
if (fakeBpb.spc == 0)
{
fakeBpb.spc = 1;
}
}
// This assumes no sane implementation will violate cluster size rules
// However nothing prevents this to happen
// If first file on disk uses only one cluster there is absolutely no way to differentiate between FAT12 and FAT16,
// so let's hope implementations use common sense?
if (!isFat12 &&
!isFat16)
{
ulong clusters;
if (fakeBpb.sectors == 0)
{
clusters = fakeBpb.spc == 0 ? fakeBpb.big_sectors : fakeBpb.big_sectors / fakeBpb.spc;
}
else
{
clusters = fakeBpb.spc == 0 ? fakeBpb.sectors : (ulong)fakeBpb.sectors / fakeBpb.spc;
}
if (clusters < 4089)
{
isFat12 = true;
}
else
{
isFat16 = true;
}
}
if (isFat12)
{
switch (bpbKind)
{
case BpbKind.Atari:
sb.AppendLine("Atari FAT12");
break;
case BpbKind.Apricot:
sb.AppendLine("Apricot FAT12");
break;
case BpbKind.Human:
sb.AppendLine("Human68k FAT12");
break;
default:
sb.AppendLine("Microsoft FAT12");
break;
}
XmlFsType.Type = "FAT12";
}
else if (isFat16)
{
sb.AppendLine(bpbKind == BpbKind.Atari
? "Atari FAT16"
: bpbKind == BpbKind.Human
? "Human68k FAT16"
: "Microsoft FAT16");
XmlFsType.Type = "FAT16";
}
if (bpbKind == BpbKind.Atari)
{
if (atariBpb.serial_no[0] == 0x49 &&
atariBpb.serial_no[1] == 0x48 &&
atariBpb.serial_no[2] == 0x43)
{
sb.AppendLine("Volume has been modified by Windows 9x/Me Volume Tracker.");
}
else
{
XmlFsType.VolumeSerial =
$"{atariBpb.serial_no[0]:X2}{atariBpb.serial_no[1]:X2}{atariBpb.serial_no[2]:X2}";
}
XmlFsType.SystemIdentifier = StringHandlers.CToString(atariBpb.oem_name);
if (string.IsNullOrEmpty(XmlFsType.SystemIdentifier))
{
XmlFsType.SystemIdentifier = null;
}
}
else if (fakeBpb.oem_name != null)
{
if (fakeBpb.oem_name[5] == 0x49 &&
fakeBpb.oem_name[6] == 0x48 &&
fakeBpb.oem_name[7] == 0x43)
{
sb.AppendLine("Volume has been modified by Windows 9x/Me Volume Tracker.");
}
else
{
// Later versions of Windows create a DOS 3 BPB without OEM name on 8 sectors/track floppies
// OEM ID should be ASCII, otherwise ignore it
if (fakeBpb.oem_name[0] >= 0x20 &&
fakeBpb.oem_name[0] <= 0x7F &&
fakeBpb.oem_name[1] >= 0x20 &&
fakeBpb.oem_name[1] <= 0x7F &&
fakeBpb.oem_name[2] >= 0x20 &&
fakeBpb.oem_name[2] <= 0x7F &&
fakeBpb.oem_name[3] >= 0x20 &&
fakeBpb.oem_name[3] <= 0x7F &&
fakeBpb.oem_name[4] >= 0x20 &&
fakeBpb.oem_name[4] <= 0x7F &&
fakeBpb.oem_name[5] >= 0x20 &&
fakeBpb.oem_name[5] <= 0x7F &&
fakeBpb.oem_name[6] >= 0x20 &&
fakeBpb.oem_name[6] <= 0x7F &&
fakeBpb.oem_name[7] >= 0x20 &&
fakeBpb.oem_name[7] <= 0x7F)
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fakeBpb.oem_name);
}
else if (fakeBpb.oem_name[0] < 0x20 &&
fakeBpb.oem_name[1] >= 0x20 &&
fakeBpb.oem_name[1] <= 0x7F &&
fakeBpb.oem_name[2] >= 0x20 &&
fakeBpb.oem_name[2] <= 0x7F &&
fakeBpb.oem_name[3] >= 0x20 &&
fakeBpb.oem_name[3] <= 0x7F &&
fakeBpb.oem_name[4] >= 0x20 &&
fakeBpb.oem_name[4] <= 0x7F &&
fakeBpb.oem_name[5] >= 0x20 &&
fakeBpb.oem_name[5] <= 0x7F &&
fakeBpb.oem_name[6] >= 0x20 &&
fakeBpb.oem_name[6] <= 0x7F &&
fakeBpb.oem_name[7] >= 0x20 &&
fakeBpb.oem_name[7] <= 0x7F)
{
XmlFsType.SystemIdentifier = StringHandlers.CToString(fakeBpb.oem_name, Encoding, start: 1);
}
}
if (fakeBpb.signature == 0x28 ||
fakeBpb.signature == 0x29)
{
XmlFsType.VolumeSerial = $"{fakeBpb.serial_no:X8}";
}
}
if (XmlFsType.SystemIdentifier != null)
{
sb.AppendFormat("OEM Name: {0}", XmlFsType.SystemIdentifier.Trim()).AppendLine();
}
sb.AppendFormat("{0} bytes per sector.", fakeBpb.bps).AppendLine();
if (bpbKind != BpbKind.Human)
{
if (fakeBpb.sectors == 0)
{
sb.AppendFormat("{0} sectors on volume ({1} bytes).", fakeBpb.big_sectors,
fakeBpb.big_sectors * fakeBpb.bps).AppendLine();
XmlFsType.Clusters = fakeBpb.spc == 0 ? fakeBpb.big_sectors : fakeBpb.big_sectors / fakeBpb.spc;
}
else
{
sb.AppendFormat("{0} sectors on volume ({1} bytes).", fakeBpb.sectors,
fakeBpb.sectors * fakeBpb.bps).AppendLine();
XmlFsType.Clusters =
(ulong)(fakeBpb.spc == 0 ? fakeBpb.sectors : fakeBpb.sectors / fakeBpb.spc);
}
}
else
{
XmlFsType.Clusters = humanBpb.clusters == 0 ? humanBpb.big_clusters : humanBpb.clusters;
sb.AppendFormat("{0} sectors on volume ({1} bytes).",
(XmlFsType.Clusters * humanBpb.bpc) / imagePlugin.Info.SectorSize,
XmlFsType.Clusters * humanBpb.bpc).AppendLine();
}
sb.AppendFormat("{0} sectors per cluster.", fakeBpb.spc).AppendLine();
sb.AppendFormat("{0} clusters on volume.", XmlFsType.Clusters).AppendLine();
XmlFsType.ClusterSize = (uint)(fakeBpb.bps * fakeBpb.spc);
sb.AppendFormat("{0} sectors reserved between BPB and FAT.", fakeBpb.rsectors).AppendLine();
sb.AppendFormat("{0} FATs.", fakeBpb.fats_no).AppendLine();
sb.AppendFormat("{0} entries on root directory.", fakeBpb.root_ent).AppendLine();
if (fakeBpb.media > 0)
{
sb.AppendFormat("Media descriptor: 0x{0:X2}", fakeBpb.media).AppendLine();
}
sb.AppendFormat("{0} sectors per FAT.", fakeBpb.spfat).AppendLine();
if (fakeBpb.sptrk > 0 &&
fakeBpb.sptrk < 64 &&
fakeBpb.heads > 0 &&
fakeBpb.heads < 256)
{
sb.AppendFormat("{0} sectors per track.", fakeBpb.sptrk).AppendLine();
sb.AppendFormat("{0} heads.", fakeBpb.heads).AppendLine();
}
if (fakeBpb.hsectors <= partition.Start)
{
sb.AppendFormat("{0} hidden sectors before BPB.", fakeBpb.hsectors).AppendLine();
}
if (fakeBpb.signature == 0x28 ||
fakeBpb.signature == 0x29 ||
andosOemCorrect)
{
sb.AppendFormat("Drive number: 0x{0:X2}", fakeBpb.drive_no).AppendLine();
if (XmlFsType.VolumeSerial != null)
{
sb.AppendFormat("Volume Serial Number: {0}", XmlFsType.VolumeSerial).AppendLine();
}
if ((fakeBpb.flags & 0xF8) == 0x00)
{
if ((fakeBpb.flags & 0x01) == 0x01)
{
sb.AppendLine("Volume should be checked on next mount.");
XmlFsType.Dirty = true;
}
if ((fakeBpb.flags & 0x02) == 0x02)
{
sb.AppendLine("Disk surface should be on next mount.");
}
}
if (fakeBpb.signature == 0x29 || andosOemCorrect)
{
XmlFsType.VolumeName = StringHandlers.SpacePaddedToString(fakeBpb.volume_label, Encoding);
XmlFsType.VolumeName = XmlFsType.VolumeName?.Replace("\0", "");
sb.AppendFormat("Filesystem type: {0}", Encoding.ASCII.GetString(fakeBpb.fs_type)).AppendLine();
}
}
else if (bpbKind == BpbKind.Atari &&
XmlFsType.VolumeSerial != null)
{
sb.AppendFormat("Volume Serial Number: {0}", XmlFsType.VolumeSerial).AppendLine();
}
bootChk = Sha1Context.Data(fakeBpb.boot_code, out _);
// Workaround that PCExchange jumps into "FAT16 "...
if (XmlFsType.SystemIdentifier == "PCX 2.0 ")
{
fakeBpb.jump[1] += 8;
}
// Check that jumps to a correct boot code position and has boot signature set.
// This will mean that the volume will boot, even if just to say "this is not bootable change disk"......
if (XmlFsType.Bootable == false &&
fakeBpb.jump != null)
{
XmlFsType.Bootable |=
(fakeBpb.jump[0] == 0xEB && fakeBpb.jump[1] >= minBootNearJump && fakeBpb.jump[1] < 0x80) ||
(fakeBpb.jump[0] == 0xE9 && fakeBpb.jump.Length >= 3 &&
BitConverter.ToUInt16(fakeBpb.jump, 1) >= minBootNearJump &&
BitConverter.ToUInt16(fakeBpb.jump, 1) <= 0x1FC);
}
sectorsPerRealSector = fakeBpb.bps / imagePlugin.Info.SectorSize;
// First root directory sector
rootDirectorySector =
(ulong)((fakeBpb.spfat * fakeBpb.fats_no) + fakeBpb.rsectors) * sectorsPerRealSector;
sectorsForRootDirectory = (uint)((fakeBpb.root_ent * 32) / imagePlugin.Info.SectorSize);
}
if (extraInfo != null)
{
sb.Append(extraInfo);
}
if (rootDirectorySector + partition.Start < partition.End &&
imagePlugin.Info.XmlMediaType != XmlMediaType.OpticalDisc)
{
byte[] rootDirectory =
imagePlugin.ReadSectors(rootDirectorySector + partition.Start, sectorsForRootDirectory);
if (bpbKind == BpbKind.DecRainbow)
{
var rootMs = new MemoryStream();
foreach (byte[] tmp in from ulong rootSector in new[]
{
0x17, 0x19, 0x1B, 0x1D, 0x1E, 0x20
} select imagePlugin.ReadSector(rootSector))
{
rootMs.Write(tmp, 0, tmp.Length);
}
rootDirectory = rootMs.ToArray();
}
for (int i = 0; i < rootDirectory.Length; i += 32)
{
// Not a correct entry
if (rootDirectory[i] < DIRENT_MIN &&
rootDirectory[i] != DIRENT_E5)
{
continue;
}
// Deleted or subdirectory entry
if (rootDirectory[i] == DIRENT_SUBDIR ||
rootDirectory[i] == DIRENT_DELETED)
{
continue;
}
// Not a volume label
if (rootDirectory[i + 0x0B] != 0x08 &&
rootDirectory[i + 0x0B] != 0x28)
{
continue;
}
DirectoryEntry entry =
Marshal.ByteArrayToStructureLittleEndian <DirectoryEntry>(rootDirectory, i, 32);
byte[] fullname = new byte[11];
Array.Copy(entry.filename, 0, fullname, 0, 8);
Array.Copy(entry.extension, 0, fullname, 8, 3);
string volname = Encoding.GetString(fullname).Trim();
if (!string.IsNullOrEmpty(volname))
{
XmlFsType.VolumeName =
entry.caseinfo.HasFlag(CaseInfo.AllLowerCase) ? volname.ToLower() : volname;
}
if (entry.ctime > 0 &&
entry.cdate > 0)
{
XmlFsType.CreationDate = DateHandlers.DosToDateTime(entry.cdate, entry.ctime);
if (entry.ctime_ms > 0)
{
XmlFsType.CreationDate = XmlFsType.CreationDate.AddMilliseconds(entry.ctime_ms * 10);
}
XmlFsType.CreationDateSpecified = true;
sb.AppendFormat("Volume created on {0}", XmlFsType.CreationDate).AppendLine();
}
if (entry.mtime > 0 &&
entry.mdate > 0)
{
XmlFsType.ModificationDate = DateHandlers.DosToDateTime(entry.mdate, entry.mtime);
XmlFsType.ModificationDateSpecified = true;
sb.AppendFormat("Volume last modified on {0}", XmlFsType.ModificationDate).AppendLine();
}
if (entry.adate > 0)
{
sb.AppendFormat("Volume last accessed on {0:d}", DateHandlers.DosToDateTime(entry.adate, 0)).
AppendLine();
}
break;
}
}
if (!string.IsNullOrEmpty(XmlFsType.VolumeName))
{
sb.AppendFormat("Volume label: {0}", XmlFsType.VolumeName).AppendLine();
}
if (XmlFsType.Bootable)
{
// Intel short jump
if (bpbSector[0] == 0xEB &&
bpbSector[1] < 0x80)
{
int sigSize = bpbSector[510] == 0x55 && bpbSector[511] == 0xAA ? 2 : 0;
byte[] bootCode = new byte[512 - sigSize - bpbSector[1] - 2];
Array.Copy(bpbSector, bpbSector[1] + 2, bootCode, 0, bootCode.Length);
Sha1Context.Data(bootCode, out _);
}
// Intel big jump
else if (bpbSector[0] == 0xE9 &&
BitConverter.ToUInt16(bpbSector, 1) < 0x1FC)
{
int sigSize = bpbSector[510] == 0x55 && bpbSector[511] == 0xAA ? 2 : 0;
byte[] bootCode = new byte[512 - sigSize - BitConverter.ToUInt16(bpbSector, 1) - 3];
Array.Copy(bpbSector, BitConverter.ToUInt16(bpbSector, 1) + 3, bootCode, 0, bootCode.Length);
Sha1Context.Data(bootCode, out _);
}
sb.AppendLine("Volume is bootable");
sb.AppendFormat("Boot code's SHA1: {0}", bootChk).AppendLine();
string bootName = _knownBootHashes.FirstOrDefault(t => t.hash == bootChk).name;
if (string.IsNullOrWhiteSpace(bootName))
{
sb.AppendLine("Unknown boot code.");
}
else
{
sb.AppendFormat("Boot code corresponds to {0}", bootName).AppendLine();
}
}
information = sb.ToString();
}