// /*************************************************************************** // The Disc Image Chef // ---------------------------------------------------------------------------- // // Filename : Info.cs // Author(s) : Natalia Portillo // // Component : Component // // --[ Description ] ---------------------------------------------------------- // // Description // // --[ 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 . // // ---------------------------------------------------------------------------- // Copyright © 2011-2017 Natalia Portillo // ****************************************************************************/ using System; using System.Runtime.InteropServices; using System.Text; using DiscImageChef.CommonTypes; using DiscImageChef.Console; namespace DiscImageChef.Filesystems.ISO9660 { public partial class ISO9660 : Filesystem { public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition) { byte VDType; // ISO9660 is designed for 2048 bytes/sector devices if(imagePlugin.GetSectorSize() < 2048) return false; // ISO9660 Primary Volume Descriptor starts at sector 16, so that's minimal size. if(partition.End <= (16 + partition.Start)) return false; // Read to Volume Descriptor byte[] vd_sector = imagePlugin.ReadSector(16 + partition.Start); int xa_off = 0; if(vd_sector.Length == 2336) xa_off = 8; VDType = vd_sector[0 + xa_off]; byte[] VDMagic = new byte[5]; byte[] HSMagic = new byte[5]; // This indicates the end of a volume descriptor. HighSierra here would have 16 so no problem if(VDType == 255) return false; Array.Copy(vd_sector, 0x001 + xa_off, VDMagic, 0, 5); Array.Copy(vd_sector, 0x009 + xa_off, HSMagic, 0, 5); DicConsole.DebugWriteLine("ISO9660 plugin", "VDMagic = {0}", CurrentEncoding.GetString(VDMagic)); DicConsole.DebugWriteLine("ISO9660 plugin", "HSMagic = {0}", CurrentEncoding.GetString(HSMagic)); return CurrentEncoding.GetString(VDMagic) == IsoMagic || CurrentEncoding.GetString(HSMagic) == HighSierraMagic; } public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information) { information = ""; StringBuilder ISOMetadata = new StringBuilder(); bool RockRidge = false; byte VDType; // Volume Descriptor Type, should be 1 or 2. byte[] VDMagic = new byte[5]; // Volume Descriptor magic "CD001" byte[] HSMagic = new byte[5]; // Volume Descriptor magic "CDROM" string BootSpec = ""; byte[] VDPathTableStart = new byte[4]; byte[] RootDirectoryLocation = new byte[4]; PrimaryVolumeDescriptor? pvd = null; PrimaryVolumeDescriptor? jolietvd = null; BootRecord? bvd = null; HighSierraPrimaryVolumeDescriptor? hsvd = null; // ISO9660 is designed for 2048 bytes/sector devices if(imagePlugin.GetSectorSize() < 2048) return; // ISO9660 Primary Volume Descriptor starts at sector 16, so that's minimal size. if(partition.End < 16) return; ulong counter = 0; byte[] vd_sector = imagePlugin.ReadSector(16 + counter + partition.Start); int xa_off = imagePlugin.GetSectorSize() == 2336 ? 8 : 0; Array.Copy(vd_sector, 0x009 + xa_off, HSMagic, 0, 5); bool HighSierra = CurrentEncoding.GetString(HSMagic) == HighSierraMagic; int hs_off = 0; if(HighSierra) hs_off = 8; while(true) { DicConsole.DebugWriteLine("ISO9660 plugin", "Processing VD loop no. {0}", counter); // Seek to Volume Descriptor DicConsole.DebugWriteLine("ISO9660 plugin", "Reading sector {0}", 16 + counter + partition.Start); byte[] vd_sector_tmp = imagePlugin.ReadSector(16 + counter + partition.Start); vd_sector = new byte[vd_sector_tmp.Length - xa_off]; Array.Copy(vd_sector_tmp, xa_off, vd_sector, 0, vd_sector.Length); VDType = vd_sector[0 + hs_off]; DicConsole.DebugWriteLine("ISO9660 plugin", "VDType = {0}", VDType); if(VDType == 255) // Supposedly we are in the PVD. { if(counter == 0) return; break; } Array.Copy(vd_sector, 0x001, VDMagic, 0, 5); Array.Copy(vd_sector, 0x009, HSMagic, 0, 5); if(CurrentEncoding.GetString(VDMagic) != IsoMagic && CurrentEncoding.GetString(HSMagic) != HighSierraMagic) // Recognized, it is an ISO9660, now check for rest of data. { if(counter == 0) return; break; } switch(VDType) { case 0: // TODO { bvd = new BootRecord(); IntPtr ptr = Marshal.AllocHGlobal(2048); Marshal.Copy(vd_sector, hs_off, ptr, 2048 - hs_off); bvd = (BootRecord)Marshal.PtrToStructure(ptr, typeof(BootRecord)); Marshal.FreeHGlobal(ptr); BootSpec = "Unknown"; if(CurrentEncoding.GetString(bvd.Value.system_id).Substring(0, 23) == "EL TORITO SPECIFICATION") BootSpec = "El Torito"; break; } case 1: { if(HighSierra) { hsvd = new HighSierraPrimaryVolumeDescriptor(); IntPtr ptr = Marshal.AllocHGlobal(2048); Marshal.Copy(vd_sector, 0, ptr, 2048); hsvd = (HighSierraPrimaryVolumeDescriptor)Marshal.PtrToStructure(ptr, typeof(HighSierraPrimaryVolumeDescriptor)); Marshal.FreeHGlobal(ptr); } else { pvd = new PrimaryVolumeDescriptor(); IntPtr ptr = Marshal.AllocHGlobal(2048); Marshal.Copy(vd_sector, 0, ptr, 2048); pvd = (PrimaryVolumeDescriptor)Marshal.PtrToStructure(ptr, typeof(PrimaryVolumeDescriptor)); Marshal.FreeHGlobal(ptr); } break; } case 2: { PrimaryVolumeDescriptor svd = new PrimaryVolumeDescriptor(); IntPtr ptr = Marshal.AllocHGlobal(2048); Marshal.Copy(vd_sector, 0, ptr, 2048); svd = (PrimaryVolumeDescriptor)Marshal.PtrToStructure(ptr, typeof(PrimaryVolumeDescriptor)); Marshal.FreeHGlobal(ptr); // Check if this is Joliet if(svd.escape_sequences[0] == '%' && svd.escape_sequences[1] == '/') { if(svd.escape_sequences[2] == '@' || svd.escape_sequences[2] == 'C' || svd.escape_sequences[2] == 'E') { jolietvd = svd; } else { break; } } else DicConsole.WriteLine("ISO9660 plugin", "Found unknown supplementary volume descriptor"); break; } } counter++; } DecodedVolumeDescriptor decodedVD = new DecodedVolumeDescriptor(); DecodedVolumeDescriptor decodedJolietVD = new DecodedVolumeDescriptor(); xmlFSType = new Schemas.FileSystemType(); if(pvd == null && hsvd == null) { information = "ERROR: Could not find primary volume descriptor"; return; } if(HighSierra) decodedVD = DecodeVolumeDescriptor(hsvd.Value); else decodedVD = DecodeVolumeDescriptor(pvd.Value); if(jolietvd != null) decodedJolietVD = DecodeJolietDescriptor(jolietvd.Value); ulong i = (ulong)BitConverter.ToInt32(VDPathTableStart, 0); DicConsole.DebugWriteLine("ISO9660 plugin", "VDPathTableStart = {0} + {1} = {2}", i, partition.Start, i + partition.Start); // TODO: Check this /* if((i + partition.Start) < partition.End) { byte[] path_table = imagePlugin.ReadSector(i + partition.Start); Array.Copy(path_table, 2, RootDirectoryLocation, 0, 4); // Check for Rock Ridge byte[] root_dir = imagePlugin.ReadSector((ulong)BitConverter.ToInt32(RootDirectoryLocation, 0) + partition.Start); byte[] SUSPMagic = new byte[2]; byte[] RRMagic = new byte[2]; Array.Copy(root_dir, 0x22, SUSPMagic, 0, 2); if(CurrentEncoding.GetString(SUSPMagic) == "SP") { Array.Copy(root_dir, 0x29, RRMagic, 0, 2); RockRidge |= CurrentEncoding.GetString(RRMagic) == "RR"; } }*/ byte[] ipbin_sector = imagePlugin.ReadSector(0 + partition.Start); Decoders.Sega.CD.IPBin? SegaCD = Decoders.Sega.CD.DecodeIPBin(ipbin_sector); Decoders.Sega.Saturn.IPBin? Saturn = Decoders.Sega.Saturn.DecodeIPBin(ipbin_sector); Decoders.Sega.Dreamcast.IPBin? Dreamcast = Decoders.Sega.Dreamcast.DecodeIPBin(ipbin_sector); ISOMetadata.AppendFormat("{0} file system", HighSierra ? "High Sierra Format" : "ISO9660").AppendLine(); if(jolietvd != null) ISOMetadata.AppendFormat("Joliet extensions present.").AppendLine(); if(RockRidge) ISOMetadata.AppendFormat("Rock Ridge Interchange Protocol present.").AppendLine(); if(bvd != null) ISOMetadata.AppendFormat("Disc bootable following {0} specifications.", BootSpec).AppendLine(); if(SegaCD != null) { ISOMetadata.AppendLine("This is a SegaCD / MegaCD disc."); ISOMetadata.AppendLine(Decoders.Sega.CD.Prettify(SegaCD)); } if(Saturn != null) { ISOMetadata.AppendLine("This is a Sega Saturn disc."); ISOMetadata.AppendLine(Decoders.Sega.Saturn.Prettify(Saturn)); } if(Dreamcast != null) { ISOMetadata.AppendLine("This is a Sega Dreamcast disc."); ISOMetadata.AppendLine(Decoders.Sega.Dreamcast.Prettify(Dreamcast)); } ISOMetadata.AppendLine("--------------------------------"); ISOMetadata.AppendLine("VOLUME DESCRIPTOR INFORMATION:"); ISOMetadata.AppendLine("--------------------------------"); ISOMetadata.AppendFormat("System identifier: {0}", decodedVD.SystemIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume identifier: {0}", decodedVD.VolumeIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume set identifier: {0}", decodedVD.VolumeSetIdentifier).AppendLine(); ISOMetadata.AppendFormat("Publisher identifier: {0}", decodedVD.PublisherIdentifier).AppendLine(); ISOMetadata.AppendFormat("Data preparer identifier: {0}", decodedVD.DataPreparerIdentifier).AppendLine(); ISOMetadata.AppendFormat("Application identifier: {0}", decodedVD.ApplicationIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume creation date: {0}", decodedVD.CreationTime).AppendLine(); if(decodedVD.HasModificationTime) ISOMetadata.AppendFormat("Volume modification date: {0}", decodedVD.ModificationTime).AppendLine(); else ISOMetadata.AppendFormat("Volume has not been modified.").AppendLine(); if(decodedVD.HasExpirationTime) ISOMetadata.AppendFormat("Volume expiration date: {0}", decodedVD.ExpirationTime).AppendLine(); else ISOMetadata.AppendFormat("Volume does not expire.").AppendLine(); if(decodedVD.HasEffectiveTime) ISOMetadata.AppendFormat("Volume effective date: {0}", decodedVD.EffectiveTime).AppendLine(); else ISOMetadata.AppendFormat("Volume has always been effective.").AppendLine(); ISOMetadata.AppendFormat("Volume has {0} blocks of {1} bytes each", decodedVD.Blocks, decodedVD.BlockSize).AppendLine(); if(jolietvd != null) { ISOMetadata.AppendLine("---------------------------------------"); ISOMetadata.AppendLine("JOLIET VOLUME DESCRIPTOR INFORMATION:"); ISOMetadata.AppendLine("---------------------------------------"); ISOMetadata.AppendFormat("System identifier: {0}", decodedJolietVD.SystemIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume identifier: {0}", decodedJolietVD.VolumeIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume set identifier: {0}", decodedJolietVD.VolumeSetIdentifier).AppendLine(); ISOMetadata.AppendFormat("Publisher identifier: {0}", decodedJolietVD.PublisherIdentifier).AppendLine(); ISOMetadata.AppendFormat("Data preparer identifier: {0}", decodedJolietVD.DataPreparerIdentifier).AppendLine(); ISOMetadata.AppendFormat("Application identifier: {0}", decodedJolietVD.ApplicationIdentifier).AppendLine(); ISOMetadata.AppendFormat("Volume creation date: {0}", decodedJolietVD.CreationTime).AppendLine(); if(decodedJolietVD.HasModificationTime) ISOMetadata.AppendFormat("Volume modification date: {0}", decodedJolietVD.ModificationTime).AppendLine(); else ISOMetadata.AppendFormat("Volume has not been modified.").AppendLine(); if(decodedJolietVD.HasExpirationTime) ISOMetadata.AppendFormat("Volume expiration date: {0}", decodedJolietVD.ExpirationTime).AppendLine(); else ISOMetadata.AppendFormat("Volume does not expire.").AppendLine(); if(decodedJolietVD.HasEffectiveTime) ISOMetadata.AppendFormat("Volume effective date: {0}", decodedJolietVD.EffectiveTime).AppendLine(); else ISOMetadata.AppendFormat("Volume has always been effective.").AppendLine(); } xmlFSType.Type = HighSierra ? "High Sierra Format" : "ISO9660"; if(jolietvd != null) { xmlFSType.VolumeName = decodedJolietVD.VolumeIdentifier; if(decodedJolietVD.SystemIdentifier == null || decodedVD.SystemIdentifier.Length > decodedJolietVD.SystemIdentifier.Length) xmlFSType.SystemIdentifier = decodedVD.SystemIdentifier; else xmlFSType.SystemIdentifier = decodedJolietVD.SystemIdentifier; if(decodedJolietVD.VolumeSetIdentifier == null || decodedVD.VolumeSetIdentifier.Length > decodedJolietVD.VolumeSetIdentifier.Length) xmlFSType.VolumeSetIdentifier = decodedVD.VolumeSetIdentifier; else xmlFSType.VolumeSetIdentifier = decodedJolietVD.VolumeSetIdentifier; if(decodedJolietVD.PublisherIdentifier == null || decodedVD.PublisherIdentifier.Length > decodedJolietVD.PublisherIdentifier.Length) xmlFSType.PublisherIdentifier = decodedVD.PublisherIdentifier; else xmlFSType.PublisherIdentifier = decodedJolietVD.PublisherIdentifier; if(decodedJolietVD.DataPreparerIdentifier == null || decodedVD.DataPreparerIdentifier.Length > decodedJolietVD.DataPreparerIdentifier.Length) xmlFSType.DataPreparerIdentifier = decodedVD.DataPreparerIdentifier; else xmlFSType.DataPreparerIdentifier = decodedJolietVD.SystemIdentifier; if(decodedJolietVD.ApplicationIdentifier == null || decodedVD.ApplicationIdentifier.Length > decodedJolietVD.ApplicationIdentifier.Length) xmlFSType.ApplicationIdentifier = decodedVD.ApplicationIdentifier; else xmlFSType.ApplicationIdentifier = decodedJolietVD.SystemIdentifier; xmlFSType.CreationDate = decodedJolietVD.CreationTime; xmlFSType.CreationDateSpecified = true; if(decodedJolietVD.HasModificationTime) { xmlFSType.ModificationDate = decodedJolietVD.ModificationTime; xmlFSType.ModificationDateSpecified = true; } if(decodedJolietVD.HasExpirationTime) { xmlFSType.ExpirationDate = decodedJolietVD.ExpirationTime; xmlFSType.ExpirationDateSpecified = true; } if(decodedJolietVD.HasEffectiveTime) { xmlFSType.EffectiveDate = decodedJolietVD.EffectiveTime; xmlFSType.EffectiveDateSpecified = true; } } else { xmlFSType.SystemIdentifier = decodedVD.SystemIdentifier; xmlFSType.VolumeName = decodedVD.VolumeIdentifier; xmlFSType.VolumeSetIdentifier = decodedVD.VolumeSetIdentifier; xmlFSType.PublisherIdentifier = decodedVD.PublisherIdentifier; xmlFSType.DataPreparerIdentifier = decodedVD.DataPreparerIdentifier; xmlFSType.ApplicationIdentifier = decodedVD.ApplicationIdentifier; xmlFSType.CreationDate = decodedVD.CreationTime; xmlFSType.CreationDateSpecified = true; if(decodedVD.HasModificationTime) { xmlFSType.ModificationDate = decodedVD.ModificationTime; xmlFSType.ModificationDateSpecified = true; } if(decodedVD.HasExpirationTime) { xmlFSType.ExpirationDate = decodedVD.ExpirationTime; xmlFSType.ExpirationDateSpecified = true; } if(decodedVD.HasEffectiveTime) { xmlFSType.EffectiveDate = decodedVD.EffectiveTime; xmlFSType.EffectiveDateSpecified = true; } } xmlFSType.Bootable |= bvd != null || SegaCD != null || Saturn != null || Dreamcast != null; xmlFSType.Clusters = decodedVD.Blocks; xmlFSType.ClusterSize = decodedVD.BlockSize; information = ISOMetadata.ToString(); } } }