mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
Natalia Portillo
00264f2fba
* HPFS.cs: * ISO9660.cs: * AppleMFS.cs: * AppleHFS.cs: * AppleHFSPlus.cs: Moved datetime conversion to DateHandlers class. * Symbian.cs: Identifies .SIS files. Yes I know it's not a filesystem but I needed it so. * Main.cs: Corrected typo * FileSystemIDandChk.csproj: Added datetime conversion handling class, Symbian .SIS installers, ext filesystem and ext2/3/4 filesystems. * ext2FS.cs: Detects ext2, ext3 and ext4 filesystems up to Linux 3.1 kernel. * extFS.cs: Detects ext filesystems. Untested as no Linux 2.0 was available at time :p * DateHandlers.cs: Moved all datetime convertions from plugins to central class. git-svn-id: svn://claunia.com/FileSystemIDandChk@11 17725271-3d32-4980-a8cb-9ff532f270ba
286 lines
12 KiB
C#
286 lines
12 KiB
C#
using System;
|
|
using System.IO;
|
|
using System.Text;
|
|
using FileSystemIDandChk;
|
|
|
|
// Information from VMS File System Internals by Kirby McCoy
|
|
// ISBN: 1-55558-056-4
|
|
// With some hints from http://www.decuslib.com/DECUS/vmslt97b/gnusoftware/gccaxp/7_1/vms/hm2def.h
|
|
|
|
// Expects the home block to be always in sector #1 (does not check deltas)
|
|
// Assumes a sector size of 512 bytes (VMS does on HDDs and optical drives, dunno about M.O.)
|
|
// Book only describes ODS-2. Need to test ODS-1 and OSD-5
|
|
// There is an ODS with signature "DECFILES11A", yet to be seen
|
|
|
|
// Time is a 64 bit unsigned integer, tenths of microseconds since 1858/11/17 00:00:00.
|
|
|
|
namespace FileSystemIDandChk.Plugins
|
|
{
|
|
class ODS : Plugin
|
|
{
|
|
public ODS(PluginBase Core)
|
|
{
|
|
base.Name = "Files-11 On-Disk Structure";
|
|
base.PluginUUID = new Guid("de20633c-8021-4384-aeb0-83b0df14491f");
|
|
}
|
|
|
|
public override bool Identify(FileStream stream, long offset)
|
|
{
|
|
byte[] magic_b = new byte[12];
|
|
string magic;
|
|
|
|
BinaryReader br = new BinaryReader(stream);
|
|
|
|
br.BaseStream.Seek(0x200 + offset, SeekOrigin.Begin); // Seek to home block
|
|
br.BaseStream.Seek(0x1F0, SeekOrigin.Current); // Seek to format
|
|
|
|
br.BaseStream.Read(magic_b, 0, 12);
|
|
magic = Encoding.ASCII.GetString(magic_b);
|
|
|
|
if(magic == "DECFILE11A " || magic == "DECFILE11B ")
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
public override void GetInformation (FileStream stream, long offset, out string information)
|
|
{
|
|
information = "";
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
BinaryReader br = new BinaryReader(stream);
|
|
ODSHomeBlock homeblock = new ODSHomeBlock();
|
|
byte[] temp_string = new byte[12];
|
|
homeblock.min_class = new byte[20];
|
|
homeblock.max_class = new byte[20];
|
|
homeblock.reserved1 = new byte[302];
|
|
|
|
br.BaseStream.Seek(0x200 + offset, SeekOrigin.Begin);
|
|
|
|
homeblock.homelbn = br.ReadUInt32();
|
|
homeblock.alhomelbn = br.ReadUInt32();
|
|
homeblock.altidxlbn = br.ReadUInt32();
|
|
homeblock.struclev = br.ReadUInt16();
|
|
homeblock.cluster = br.ReadUInt16();
|
|
homeblock.homevbn = br.ReadUInt16();
|
|
homeblock.alhomevbn = br.ReadUInt16();
|
|
homeblock.altidxvbn = br.ReadUInt16();
|
|
homeblock.ibmapvbn = br.ReadUInt16();
|
|
homeblock.ibmaplbn = br.ReadUInt32();
|
|
homeblock.maxfiles = br.ReadUInt32();
|
|
homeblock.ibmapsize = br.ReadUInt16();
|
|
homeblock.resfiles = br.ReadUInt16();
|
|
homeblock.devtype = br.ReadUInt16();
|
|
homeblock.rvn = br.ReadUInt16();
|
|
homeblock.setcount = br.ReadUInt16();
|
|
homeblock.volchar = br.ReadUInt16();
|
|
homeblock.volowner = br.ReadUInt32();
|
|
homeblock.sec_mask = br.ReadUInt32();
|
|
homeblock.protect = br.ReadUInt16();
|
|
homeblock.fileprot = br.ReadUInt16();
|
|
homeblock.recprot = br.ReadUInt16();
|
|
homeblock.checksum1 = br.ReadUInt16();
|
|
homeblock.credate = br.ReadUInt64();
|
|
homeblock.window = br.ReadByte();
|
|
homeblock.lru_lim = br.ReadByte();
|
|
homeblock.extend = br.ReadUInt16();
|
|
homeblock.retainmin = br.ReadUInt64();
|
|
homeblock.retainmax = br.ReadUInt64();
|
|
homeblock.revdate = br.ReadUInt64();
|
|
homeblock.min_class = br.ReadBytes(20);
|
|
homeblock.max_class = br.ReadBytes(20);
|
|
homeblock.filetab_fid1 = br.ReadUInt16();
|
|
homeblock.filetab_fid2 = br.ReadUInt16();
|
|
homeblock.filetab_fid3 = br.ReadUInt16();
|
|
homeblock.lowstruclev = br.ReadUInt16();
|
|
homeblock.highstruclev = br.ReadUInt16();
|
|
homeblock.copydate = br.ReadUInt64();
|
|
homeblock.reserved1 = br.ReadBytes(302);
|
|
homeblock.serialnum = br.ReadUInt32();
|
|
temp_string = br.ReadBytes(12);
|
|
homeblock.strucname = Encoding.ASCII.GetString(temp_string);
|
|
temp_string = br.ReadBytes(12);
|
|
homeblock.volname = Encoding.ASCII.GetString(temp_string);
|
|
temp_string = br.ReadBytes(12);
|
|
homeblock.ownername = Encoding.ASCII.GetString(temp_string);
|
|
temp_string = br.ReadBytes(12);
|
|
homeblock.format = Encoding.ASCII.GetString(temp_string);
|
|
homeblock.reserved2 = br.ReadUInt16();
|
|
homeblock.checksum2 = br.ReadUInt16();
|
|
|
|
if((homeblock.struclev & 0xFF00) != 0x0200 || (homeblock.struclev & 0xFF) != 1 || 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}", homeblock.format).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} (cluster {1})", homeblock.homelbn, homeblock.homevbn).AppendLine();
|
|
sb.AppendFormat("Secondary home block is on sector {0} (cluster {1})", homeblock.alhomelbn, homeblock.alhomevbn).AppendLine();
|
|
sb.AppendFormat("Volume bitmap starts in sector {0} (cluster {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} (cluster {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 && homeblock.strucname != " ")
|
|
sb.AppendFormat("Volume is {0} of {1} in set \"{2}\".", homeblock.rvn, homeblock.setcount, homeblock.strucname).AppendLine();
|
|
sb.AppendFormat("Volume owner is \"{0}\" (ID 0x{1:X8})", homeblock.ownername, homeblock.volowner).AppendLine();
|
|
sb.AppendFormat("Volume label: \"{0}\"", homeblock.volname).AppendLine();
|
|
sb.AppendFormat("Drive serial number: 0x{0:X8}", homeblock.serialnum).AppendLine();
|
|
sb.AppendFormat("Volume was created on {0}", DateHandlers.VMSToDateTime(homeblock.credate).ToString()).AppendLine();
|
|
if(homeblock.revdate > 0)
|
|
sb.AppendFormat("Volume was last modified on {0}", DateHandlers.VMSToDateTime(homeblock.revdate).ToString()).AppendLine();
|
|
if(homeblock.copydate > 0)
|
|
sb.AppendFormat("Volume copied on {0}", DateHandlers.VMSToDateTime(homeblock.copydate).ToString()).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
|
|
if((homeblock.protect & 0x1000) == 0x1000)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("r");
|
|
if((homeblock.protect & 0x2000) == 0x2000)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("w");
|
|
if((homeblock.protect & 0x4000) == 0x4000)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("c");
|
|
if((homeblock.protect & 0x8000) == 0x8000)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("d");
|
|
// Owner
|
|
if((homeblock.protect & 0x100) == 0x100)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("r");
|
|
if((homeblock.protect & 0x200) == 0x200)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("w");
|
|
if((homeblock.protect & 0x400) == 0x400)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("c");
|
|
if((homeblock.protect & 0x800) == 0x800)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("d");
|
|
// Group
|
|
if((homeblock.protect & 0x10) == 0x10)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("r");
|
|
if((homeblock.protect & 0x20) == 0x20)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("w");
|
|
if((homeblock.protect & 0x40) == 0x40)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("c");
|
|
if((homeblock.protect & 0x80) == 0x80)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("d");
|
|
// World (other)
|
|
if((homeblock.protect & 0x1) == 0x1)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("r");
|
|
if((homeblock.protect & 0x2) == 0x2)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("w");
|
|
if((homeblock.protect & 0x4) == 0x4)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("c");
|
|
if((homeblock.protect & 0x8) == 0x8)
|
|
sb.Append("-");
|
|
else
|
|
sb.Append("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();
|
|
|
|
information = sb.ToString();
|
|
}
|
|
|
|
private struct ODSHomeBlock
|
|
{
|
|
public UInt32 homelbn; // LBN of THIS home block
|
|
public UInt32 alhomelbn; // LBN of the secondary home block
|
|
public UInt32 altidxlbn; // LBN of backup INDEXF.SYS;1
|
|
public UInt16 struclev; // High byte contains filesystem version (1, 2 or 5), low byte contains revision (1)
|
|
public UInt16 cluster; // Number of blocks each bit of the volume bitmap represents
|
|
public UInt16 homevbn; // VBN of THIS home block
|
|
public UInt16 alhomevbn; // VBN of the secondary home block
|
|
public UInt16 altidxvbn; // VBN of backup INDEXF.SYS;1
|
|
public UInt16 ibmapvbn; // VBN of the bitmap
|
|
public UInt32 ibmaplbn; // LBN of the bitmap
|
|
public UInt32 maxfiles; // Max files on volume
|
|
public UInt16 ibmapsize; // Bitmap size in sectors
|
|
public UInt16 resfiles; // Reserved files, 5 at minimum
|
|
public UInt16 devtype; // Device type, ODS-2 defines it as always 0
|
|
public UInt16 rvn; // Relative volume number (number of the volume in a set)
|
|
public UInt16 setcount; // Total number of volumes in the set this volume is
|
|
public UInt16 volchar; // Flags
|
|
public UInt32 volowner; // User ID of the volume owner
|
|
public UInt32 sec_mask; // Security mask (??)
|
|
public UInt16 protect; // Volume permissions (system, owner, group and other)
|
|
public UInt16 fileprot; // Default file protection, unsupported in ODS-2
|
|
public UInt16 recprot; // Default file record protection
|
|
public UInt16 checksum1; // Checksum of all preceding entries
|
|
public UInt64 credate; // Creation date
|
|
public byte window; // Window size (pointers for the window)
|
|
public byte lru_lim; // Directories to be stored in cache
|
|
public UInt16 extend; // Default allocation size in blocks
|
|
public UInt64 retainmin; // Minimum file retention period
|
|
public UInt64 retainmax; // Maximum file retention period
|
|
public UInt64 revdate; // Last modification date
|
|
public byte[] min_class; // Minimum security class, 20 bytes
|
|
public byte[] max_class; // Maximum security class, 20 bytes
|
|
public UInt16 filetab_fid1; // File lookup table FID
|
|
public UInt16 filetab_fid2; // File lookup table FID
|
|
public UInt16 filetab_fid3; // File lookup table FID
|
|
public UInt16 lowstruclev; // Lowest structure level on the volume
|
|
public UInt16 highstruclev; // Highest structure level on the volume
|
|
public UInt64 copydate; // Volume copy date (??)
|
|
public byte[] reserved1; // 302 bytes
|
|
public UInt32 serialnum; // Physical drive serial number
|
|
public string strucname; // Name of the volume set, 12 bytes
|
|
public string volname; // Volume label, 12 bytes
|
|
public string ownername; // Name of the volume owner, 12 bytes
|
|
public string format; // ODS-2 defines it as "DECFILE11B", 12 bytes
|
|
public UInt16 reserved2; // Reserved
|
|
public UInt16 checksum2; // Checksum of preceding 255 words (16 bit units)
|
|
}
|
|
}
|
|
}
|
|
|