Added support for HP Logical Interchange Format.

DiscImageChef.Filesystems/DiscImageChef.Filesystems.csproj

@@ -133,6 +133,7 @@
     <Compile Include="RBF.cs" />
     <Compile Include="AODOS.cs" />
     <Compile Include="RT11.cs" />
+    <Compile Include="LIF.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

DiscImageChef.Filesystems/LIF.cs

@@ -0,0 +1,199 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : LIF.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Component
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Identifies the LIF 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 © 2011-2017 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+using DiscImageChef.CommonTypes;
+using DiscImageChef.Console;
+
+namespace DiscImageChef.Filesystems
+{
+    // Information from http://www.hp9845.net/9845/projects/hpdir/#lif_filesystem
+    public class LIF : Filesystem
+    {
+        [StructLayout(LayoutKind.Sequential, Pack = 1)]
+        struct LIF_SystemBlock
+        {
+            public ushort magic;
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
+            public byte[] volumeLabel;
+            public uint directoryStart;
+            public ushort lifId;
+            public ushort unused;
+            public uint directorySize;
+            public ushort lifVersion;
+            public ushort unused2;
+            public uint tracks;
+            public uint heads;
+            public uint sectors;
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
+            public byte[] creationDate;
+        }
+
+        const uint LIF_Magic = 0x8000;
+
+        public LIF()
+        {
+            Name = "HP Logical Interchange Format Plugin";
+            PluginUUID = new Guid("41535647-77A5-477B-9206-DA727ACDC704");
+            CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
+        }
+
+        public LIF(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding)
+        {
+            Name = "HP Logical Interchange Format Plugin";
+            PluginUUID = new Guid("41535647-77A5-477B-9206-DA727ACDC704");
+            if(encoding == null)
+                CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
+            else
+                CurrentEncoding = encoding;
+        }
+
+        public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition)
+        {
+            if(imagePlugin.GetSectorSize() < 256)
+                return false;
+
+            LIF_SystemBlock LIFSb = new LIF_SystemBlock();
+
+            byte[] sector = imagePlugin.ReadSector(partition.Start);
+            LIFSb = BigEndianMarshal.ByteArrayToStructureBigEndian<LIF_SystemBlock>(sector);
+            DicConsole.DebugWriteLine("LIF plugin", "magic 0x{0:X8} (expected 0x{1:X8})", LIFSb.magic, LIF_Magic);
+
+            return LIFSb.magic == LIF_Magic;
+        }
+
+        public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information)
+        {
+            information = "";
+
+            if(imagePlugin.GetSectorSize() < 256)
+                return;
+
+            LIF_SystemBlock LIFSb = new LIF_SystemBlock();
+
+            byte[] sector = imagePlugin.ReadSector(partition.Start);
+            LIFSb = BigEndianMarshal.ByteArrayToStructureBigEndian<LIF_SystemBlock>(sector);
+
+            if(LIFSb.magic != LIF_Magic)
+                return;
+
+            StringBuilder sb = new StringBuilder();
+
+            sb.AppendLine("HP Logical Interchange Format");
+            sb.AppendFormat("Directory starts at cluster {0}", LIFSb.directoryStart).AppendLine();
+            sb.AppendFormat("LIF identifier: {0}", LIFSb.lifId).AppendLine();
+            sb.AppendFormat("Directory size: {0} clusters", LIFSb.directorySize).AppendLine();
+            sb.AppendFormat("LIF version: {0}", LIFSb.lifVersion).AppendLine();
+            // How is this related to volume size? I have only CDs to test and makes no sense there
+            sb.AppendFormat("{0} tracks", LIFSb.tracks).AppendLine();
+            sb.AppendFormat("{0} heads", LIFSb.heads).AppendLine();
+            sb.AppendFormat("{0} sectors", LIFSb.sectors).AppendLine();
+            sb.AppendFormat("Volume name: {0}", StringHandlers.CToString(LIFSb.volumeLabel, CurrentEncoding)).AppendLine();
+            sb.AppendFormat("Volume created on {0}", DateHandlers.LifToDateTime(LIFSb.creationDate)).AppendLine();
+
+            information = sb.ToString();
+
+            xmlFSType = new Schemas.FileSystemType
+            {
+                Type = "HP Logical Interchange Format",
+                ClusterSize = 256,
+                Clusters = (long)(partition.Size / 256),
+                CreationDate = DateHandlers.LifToDateTime(LIFSb.creationDate),
+                CreationDateSpecified = true,
+                VolumeName = StringHandlers.CToString(LIFSb.volumeLabel, CurrentEncoding)
+            };
+        }
+
+        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;
+        }
+    }
+}

DiscImageChef.Helpers/DateHandlers.cs

@@ -230,7 +230,7 @@ namespace DiscImageChef
 
             if(offset == -2047)
                 return new DateTime(year, month, day, hour, minute, second, DateTimeKind.Unspecified).AddTicks(ticks);
-            
+
             if(offset < -1440 || offset > 1440)
                 offset = 0;
 
@@ -260,6 +260,38 @@ namespace DiscImageChef
 
             return os9date;
         }
+
+        public static DateTime LifToDateTime(byte[] date)
+        {
+            if(date == null || date.Length != 6)
+                return new DateTime(1970, 1, 1, 0, 0, 0);
+
+            return LifToDateTime(date[0], date[1], date[2], date[3], date[4], date[5]);
+        }
+
+        public static DateTime LifToDateTime(byte year, byte month, byte day, byte hour, byte minute, byte second)
+        {
+            try
+            {
+                int iyear = ((year >> 4) * 10 + (year & 0xF));
+                int imonth = (month >> 4) * 10 + (month & 0xF);
+                int iday = (day >> 4) * 10 + (day & 0xF);
+                int iminute = (minute >> 4) * 10 + (minute & 0xF);
+                int ihour = (hour >> 4) * 10 + (hour & 0xF);
+                int isecond = (second >> 4) * 10 + (second & 0xF);
+
+                if(iyear >= 70)
+                    iyear += 1900;
+                else
+                    iyear += 2000;
+
+                return new DateTime(iyear, imonth, iday, ihour, iminute, isecond);
+            }
+            catch(ArgumentOutOfRangeException)
+            {
+                return new DateTime(1970, 1, 1, 0, 0, 0);
+            }
+        }
     }
 }
 

README.md

@@ -135,6 +135,7 @@ Supported file systems for identification and information only
 * Flash-Friendly File System (F2FS)
 * Fossil file system (from Plan9)
 * HAMMER file system
+* HP Logical Interchange Format
 * IBM Journaling File System (JFS)
 * ISO9660
 * Linux extended file system