Files
Aaru/DiscImageChef.Filesystems/SolarFS.cs

277 lines
12 KiB
C#

// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : SolarFS.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : SolarOS filesystem plugin.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies the SolarOS filesystem and shows information.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2018 Natalia Portillo
// ****************************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using DiscImageChef.CommonTypes;
using DiscImageChef.Console;
namespace DiscImageChef.Filesystems
{
// Based on FAT's BPB, cannot find a FAT or directory
public class SolarFS : Filesystem
{
public SolarFS()
{
Name = "Solar_OS filesystem";
PluginUUID = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
}
public SolarFS(Encoding encoding)
{
Name = "Solar_OS filesystem";
PluginUUID = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
if(encoding == null) CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
else CurrentEncoding = encoding;
}
public SolarFS(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding)
{
Name = "Solar_OS filesystem";
PluginUUID = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
if(encoding == null) CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
else CurrentEncoding = encoding;
}
public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition)
{
if((2 + partition.Start) >= partition.End) return false;
byte signature; /// <summary>0x29
string fs_type; // "SOL_FS "
byte[] bpb = imagePlugin.ReadSector(0 + partition.Start);
byte[] fs_type_b = new byte[8];
signature = bpb[0x25];
Array.Copy(bpb, 0x35, fs_type_b, 0, 8);
fs_type = StringHandlers.CToString(fs_type_b);
if(signature == 0x29 && fs_type == "SOL_FS ") return true;
return false;
}
public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition,
out string information)
{
information = "";
StringBuilder sb = new StringBuilder();
byte[] bpb_sector = imagePlugin.ReadSector(0 + partition.Start);
byte[] bpb_strings;
SolarOSParameterBlock BPB = new SolarOSParameterBlock();
bpb_strings = new byte[8];
Array.Copy(bpb_sector, 0x03, bpb_strings, 0, 8);
BPB.OEMName = StringHandlers.CToString(bpb_strings);
BPB.bps = BitConverter.ToUInt16(bpb_sector, 0x0B);
BPB.root_ent = BitConverter.ToUInt16(bpb_sector, 0x10);
BPB.sectors = BitConverter.ToUInt16(bpb_sector, 0x12);
BPB.media = bpb_sector[0x14];
BPB.spfat = BitConverter.ToUInt16(bpb_sector, 0x15);
BPB.sptrk = BitConverter.ToUInt16(bpb_sector, 0x17);
BPB.heads = BitConverter.ToUInt16(bpb_sector, 0x19);
BPB.signature = bpb_sector[0x25];
bpb_strings = new byte[8];
Array.Copy(bpb_sector, 0x2A, bpb_strings, 0, 11);
BPB.vol_name = StringHandlers.CToString(bpb_strings, CurrentEncoding);
bpb_strings = new byte[8];
Array.Copy(bpb_sector, 0x35, bpb_strings, 0, 8);
BPB.fs_type = StringHandlers.CToString(bpb_strings, CurrentEncoding);
BPB.x86_jump = new byte[3];
Array.Copy(bpb_sector, 0x00, BPB.x86_jump, 0, 3);
BPB.unk1 = bpb_sector[0x0D];
BPB.unk2 = BitConverter.ToUInt16(bpb_sector, 0x0E);
BPB.unk3 = new byte[10];
Array.Copy(bpb_sector, 0x1B, BPB.unk3, 0, 10);
BPB.unk4 = BitConverter.ToUInt32(bpb_sector, 0x26);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.x86_jump: 0x{0:X2}{1:X2}{2:X2}", BPB.x86_jump[0],
BPB.x86_jump[1], BPB.x86_jump[2]);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.OEMName: \"{0}\"", BPB.OEMName);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.bps: {0}", BPB.bps);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk1: 0x{0:X2}", BPB.unk1);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk2: 0x{0:X4}", BPB.unk2);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.root_ent: {0}", BPB.root_ent);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.sectors: {0}", BPB.sectors);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.media: 0x{0:X2}", BPB.media);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.spfat: {0}", BPB.spfat);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.sptrk: {0}", BPB.sptrk);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.heads: {0}", BPB.heads);
DicConsole.DebugWriteLine("SolarFS plugin",
"BPB.unk3: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}",
BPB.unk3[0], BPB.unk3[1], BPB.unk3[2], BPB.unk3[3], BPB.unk3[4], BPB.unk3[5],
BPB.unk3[6], BPB.unk3[7], BPB.unk3[8], BPB.unk3[9]);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.signature: 0x{0:X2}", BPB.signature);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk4: 0x{0:X8}", BPB.unk4);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.vol_name: \"{0}\"", BPB.vol_name);
DicConsole.DebugWriteLine("SolarFS plugin", "BPB.fs_type: \"{0}\"", BPB.fs_type);
sb.AppendLine("Solar_OS filesystem");
sb.AppendFormat("Media descriptor: 0x{0:X2}", BPB.media).AppendLine();
sb.AppendFormat("{0} bytes per sector", BPB.bps).AppendLine();
if(imagePlugin.GetSectorSize() == 2336 || imagePlugin.GetSectorSize() == 2352 ||
imagePlugin.GetSectorSize() == 2448)
{
if(BPB.bps != imagePlugin.GetSectorSize())
{
sb
.AppendFormat("WARNING: Filesystem describes a {0} bytes/sector, while device describes a {1} bytes/sector",
BPB.bps, 2048).AppendLine();
}
}
else if(BPB.bps != imagePlugin.GetSectorSize())
{
sb
.AppendFormat("WARNING: Filesystem describes a {0} bytes/sector, while device describes a {1} bytes/sector",
BPB.bps, imagePlugin.GetSectorSize()).AppendLine();
}
sb.AppendFormat("{0} sectors on volume ({1} bytes)", BPB.sectors, BPB.sectors * BPB.bps).AppendLine();
if(BPB.sectors > imagePlugin.GetSectors())
sb.AppendFormat("WARNING: Filesystem describes a {0} sectors volume, bigger than device ({1} sectors)",
BPB.sectors, imagePlugin.GetSectors());
sb.AppendFormat("{0} heads", BPB.heads).AppendLine();
sb.AppendFormat("{0} sectors per track", BPB.sptrk).AppendLine();
sb.AppendFormat("Volume name: {0}", BPB.vol_name).AppendLine();
xmlFSType = new Schemas.FileSystemType();
xmlFSType.Type = "SolarFS";
xmlFSType.Clusters = BPB.sectors;
xmlFSType.ClusterSize = BPB.bps;
xmlFSType.VolumeName = BPB.vol_name;
information = sb.ToString();
}
struct SolarOSParameterBlock
{
/// <summary>0x00, x86 jump (3 bytes), jumps to 0x60</summary>
public byte[] x86_jump;
/// <summary>0x03, 8 bytes, "SOLAR_OS"</summary>
public string OEMName;
/// <summary>0x0B, Bytes per sector</summary>
public ushort bps;
/// <summary>0x0D, unknown, 0x01</summary>
public byte unk1;
/// <summary>0x0E, unknown, 0x0201</summary>
public ushort unk2;
/// <summary>0x10, Number of entries on root directory ? (no root directory found)</summary>
public ushort root_ent;
/// <summary>0x12, Sectors in volume</summary>
public ushort sectors;
/// <summary>0x14, Media descriptor</summary>
public byte media;
/// <summary>0x15, Sectors per FAT ? (no FAT found)</summary>
public ushort spfat;
/// <summary>0x17, Sectors per track</summary>
public ushort sptrk;
/// <summary>0x19, Heads</summary>
public ushort heads;
/// <summary>0x1B, unknown, 10 bytes, zero-filled</summary>
public byte[] unk3;
/// <summary>0x25, 0x29</summary>
public byte signature;
/// <summary>0x26, unknown, zero-filled</summary>
public uint unk4;
/// <summary>0x2A, 11 bytes, volume name, space-padded</summary>
public string vol_name;
/// <summary>0x35, 8 bytes, "SOL_FS "</summary>
public string fs_type;
}
public override Errno Mount()
{
return Errno.NotImplemented;
}
public override Errno Mount(bool debug)
{
return Errno.NotImplemented;
}
public override Errno Unmount()
{
return Errno.NotImplemented;
}
public override Errno MapBlock(string path, long fileBlock, ref long deviceBlock)
{
return Errno.NotImplemented;
}
public override Errno GetAttributes(string path, ref FileAttributes attributes)
{
return Errno.NotImplemented;
}
public override Errno ListXAttr(string path, ref List<string> xattrs)
{
return Errno.NotImplemented;
}
public override Errno GetXattr(string path, string xattr, ref byte[] buf)
{
return Errno.NotImplemented;
}
public override Errno Read(string path, long offset, long size, ref byte[] buf)
{
return Errno.NotImplemented;
}
public override Errno ReadDir(string path, ref List<string> contents)
{
return Errno.NotImplemented;
}
public override Errno StatFs(ref FileSystemInfo stat)
{
return Errno.NotImplemented;
}
public override Errno Stat(string path, ref FileEntryInfo stat)
{
return Errno.NotImplemented;
}
public override Errno ReadLink(string path, ref string dest)
{
return Errno.NotImplemented;
}
}
}