mirror of
https://github.com/aaru-dps/Aaru.git
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684 lines
26 KiB
C#
684 lines
26 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : AppleDouble.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Filters.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Provides a filter to open AppleDouble files.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2021 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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using System.Linq;
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using System.Runtime.InteropServices;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Helpers;
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using Marshal = Aaru.Helpers.Marshal;
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namespace Aaru.Filters
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{
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/// <inheritdoc />
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/// <summary>Decodes AppleDouble files</summary>
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[SuppressMessage("ReSharper", "UnusedMember.Local")]
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public sealed class AppleDouble : IFilter
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{
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const uint MAGIC = 0x00051607;
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const uint VERSION = 0x00010000;
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const uint VERSION2 = 0x00020000;
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readonly byte[] _dosHome =
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{
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0x4D, 0x53, 0x2D, 0x44, 0x4F, 0x53, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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readonly byte[] _macintoshHome =
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{
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0x4D, 0x61, 0x63, 0x69, 0x6E, 0x74, 0x6F, 0x73, 0x68, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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readonly byte[] _osxHome =
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{
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0x4D, 0x61, 0x63, 0x20, 0x4F, 0x53, 0x20, 0x58, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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readonly byte[] _proDosHome =
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{
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0x50, 0x72, 0x6F, 0x44, 0x4F, 0x53, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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readonly byte[] _unixHome =
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{
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0x55, 0x6E, 0x69, 0x78, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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readonly byte[] _vmsHome =
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{
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0x56, 0x41, 0x58, 0x20, 0x56, 0x4D, 0x53, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20
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};
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string _basePath;
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DateTime _creationTime;
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Entry _dataFork;
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Header _header;
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string _headerPath;
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DateTime _lastWriteTime;
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bool _opened;
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Entry _rsrcFork;
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/// <inheritdoc />
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public string Name => "AppleDouble";
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/// <inheritdoc />
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public Guid Id => new Guid("1B2165EE-C9DF-4B21-BBBB-9E5892B2DF4D");
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/// <inheritdoc />
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public string Author => "Natalia Portillo";
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/// <inheritdoc />
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public void Close() => _opened = false;
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/// <inheritdoc />
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public string GetBasePath() => _basePath;
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/// <inheritdoc />
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public DateTime GetCreationTime() => _creationTime;
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/// <inheritdoc />
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public long GetDataForkLength() => _dataFork.length;
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/// <inheritdoc />
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public Stream GetDataForkStream() => new FileStream(_basePath, FileMode.Open, FileAccess.Read);
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/// <inheritdoc />
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public string GetFilename() => Path.GetFileName(_basePath);
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/// <inheritdoc />
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public DateTime GetLastWriteTime() => _lastWriteTime;
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/// <inheritdoc />
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public long GetLength() => _dataFork.length + _rsrcFork.length;
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/// <inheritdoc />
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public string GetParentFolder() => Path.GetDirectoryName(_basePath);
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/// <inheritdoc />
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public string GetPath() => _basePath;
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/// <inheritdoc />
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public long GetResourceForkLength() => _rsrcFork.length;
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/// <inheritdoc />
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public Stream GetResourceForkStream()
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{
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if(_rsrcFork.length == 0)
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return null;
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return new OffsetStream(_headerPath, FileMode.Open, FileAccess.Read, _rsrcFork.offset,
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_rsrcFork.offset + _rsrcFork.length - 1);
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}
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/// <inheritdoc />
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public bool HasResourceFork() => _rsrcFork.length > 0;
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/// <inheritdoc />
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public bool Identify(byte[] buffer) => false;
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/// <inheritdoc />
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public bool Identify(Stream stream) => false;
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/// <inheritdoc />
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public bool Identify(string path)
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{
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string filename = Path.GetFileName(path);
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string filenameNoExt = Path.GetFileNameWithoutExtension(path);
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string parentFolder = Path.GetDirectoryName(path);
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parentFolder ??= "";
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if(filename is null ||
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filenameNoExt is null)
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return false;
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// Prepend data fork name with "R."
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string proDosAppleDouble = Path.Combine(parentFolder, "R." + filename);
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// Prepend data fork name with '%'
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string unixAppleDouble = Path.Combine(parentFolder, "%" + filename);
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// Change file extension to ADF
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string dosAppleDouble = Path.Combine(parentFolder, filenameNoExt + ".ADF");
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// Change file extension to adf
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string dosAppleDoubleLower = Path.Combine(parentFolder, filenameNoExt + ".adf");
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// Store AppleDouble header file in ".AppleDouble" folder with same name
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string netatalkAppleDouble = Path.Combine(parentFolder, ".AppleDouble", filename);
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// Store AppleDouble header file in "resource.frk" folder with same name
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string daveAppleDouble = Path.Combine(parentFolder, "resource.frk", filename);
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// Prepend data fork name with "._"
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string osxAppleDouble = Path.Combine(parentFolder, "._" + filename);
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// Adds ".rsrc" extension
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string unArAppleDouble = Path.Combine(parentFolder, filename + ".rsrc");
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// Check AppleDouble created by A/UX in ProDOS filesystem
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if(File.Exists(proDosAppleDouble))
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{
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var prodosStream = new FileStream(proDosAppleDouble, FileMode.Open, FileAccess.Read);
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if(prodosStream.Length > 26)
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{
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byte[] prodosB = new byte[26];
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prodosStream.Read(prodosB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(prodosB);
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prodosStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by A/UX in UFS filesystem
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if(File.Exists(unixAppleDouble))
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{
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var unixStream = new FileStream(unixAppleDouble, FileMode.Open, FileAccess.Read);
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if(unixStream.Length > 26)
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{
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byte[] unixB = new byte[26];
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unixStream.Read(unixB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(unixB);
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unixStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by A/UX in FAT filesystem
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if(File.Exists(dosAppleDouble))
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{
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var dosStream = new FileStream(dosAppleDouble, FileMode.Open, FileAccess.Read);
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if(dosStream.Length > 26)
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{
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byte[] dosB = new byte[26];
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dosStream.Read(dosB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(dosB);
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dosStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by A/UX in case preserving FAT filesystem
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if(File.Exists(dosAppleDoubleLower))
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{
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var doslStream = new FileStream(dosAppleDoubleLower, FileMode.Open, FileAccess.Read);
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if(doslStream.Length > 26)
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{
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byte[] doslB = new byte[26];
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doslStream.Read(doslB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(doslB);
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doslStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by Netatalk
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if(File.Exists(netatalkAppleDouble))
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{
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var netatalkStream = new FileStream(netatalkAppleDouble, FileMode.Open, FileAccess.Read);
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if(netatalkStream.Length > 26)
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{
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byte[] netatalkB = new byte[26];
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netatalkStream.Read(netatalkB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(netatalkB);
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netatalkStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by DAVE
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if(File.Exists(daveAppleDouble))
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{
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var daveStream = new FileStream(daveAppleDouble, FileMode.Open, FileAccess.Read);
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if(daveStream.Length > 26)
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{
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byte[] daveB = new byte[26];
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daveStream.Read(daveB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(daveB);
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daveStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by Mac OS X
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if(File.Exists(osxAppleDouble))
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{
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var osxStream = new FileStream(osxAppleDouble, FileMode.Open, FileAccess.Read);
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if(osxStream.Length > 26)
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{
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byte[] osxB = new byte[26];
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osxStream.Read(osxB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(osxB);
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osxStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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return true;
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}
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}
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// Check AppleDouble created by UnAr (from The Unarchiver)
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if(!File.Exists(unArAppleDouble))
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return false;
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var unarStream = new FileStream(unArAppleDouble, FileMode.Open, FileAccess.Read);
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if(unarStream.Length <= 26)
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return false;
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byte[] unarB = new byte[26];
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unarStream.Read(unarB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(unarB);
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unarStream.Close();
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return _header.magic == MAGIC && (_header.version == VERSION || _header.version == VERSION2);
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}
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/// <inheritdoc />
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public bool IsOpened() => _opened;
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// Now way to have two files in a single byte array
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/// <inheritdoc />
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public void Open(byte[] buffer) => throw new NotSupportedException();
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// Now way to have two files in a single stream
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/// <inheritdoc />
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public void Open(Stream stream) => throw new NotSupportedException();
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/// <inheritdoc />
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public void Open(string path)
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{
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string filename = Path.GetFileName(path);
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string filenameNoExt = Path.GetFileNameWithoutExtension(path);
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string parentFolder = Path.GetDirectoryName(path);
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parentFolder ??= "";
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if(filename is null ||
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filenameNoExt is null)
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throw new ArgumentNullException(nameof(path));
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// Prepend data fork name with "R."
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string proDosAppleDouble = Path.Combine(parentFolder, "R." + filename);
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// Prepend data fork name with '%'
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string unixAppleDouble = Path.Combine(parentFolder, "%" + filename);
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// Change file extension to ADF
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string dosAppleDouble = Path.Combine(parentFolder, filenameNoExt + ".ADF");
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// Change file extension to adf
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string dosAppleDoubleLower = Path.Combine(parentFolder, filenameNoExt + ".adf");
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// Store AppleDouble header file in ".AppleDouble" folder with same name
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string netatalkAppleDouble = Path.Combine(parentFolder, ".AppleDouble", filename);
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// Store AppleDouble header file in "resource.frk" folder with same name
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string daveAppleDouble = Path.Combine(parentFolder, "resource.frk", filename);
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// Prepend data fork name with "._"
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string osxAppleDouble = Path.Combine(parentFolder, "._" + filename);
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// Adds ".rsrc" extension
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string unArAppleDouble = Path.Combine(parentFolder, filename + ".rsrc");
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// Check AppleDouble created by A/UX in ProDOS filesystem
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if(File.Exists(proDosAppleDouble))
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{
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var prodosStream = new FileStream(proDosAppleDouble, FileMode.Open, FileAccess.Read);
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if(prodosStream.Length > 26)
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{
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byte[] prodosB = new byte[26];
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prodosStream.Read(prodosB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(prodosB);
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prodosStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = proDosAppleDouble;
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}
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}
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// Check AppleDouble created by A/UX in UFS filesystem
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if(File.Exists(unixAppleDouble))
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{
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var unixStream = new FileStream(unixAppleDouble, FileMode.Open, FileAccess.Read);
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if(unixStream.Length > 26)
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{
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byte[] unixB = new byte[26];
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unixStream.Read(unixB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(unixB);
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unixStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = unixAppleDouble;
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}
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}
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// Check AppleDouble created by A/UX in FAT filesystem
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if(File.Exists(dosAppleDouble))
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{
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var dosStream = new FileStream(dosAppleDouble, FileMode.Open, FileAccess.Read);
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if(dosStream.Length > 26)
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{
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byte[] dosB = new byte[26];
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dosStream.Read(dosB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(dosB);
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dosStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = dosAppleDouble;
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}
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}
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// Check AppleDouble created by A/UX in case preserving FAT filesystem
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if(File.Exists(dosAppleDoubleLower))
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{
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var doslStream = new FileStream(dosAppleDoubleLower, FileMode.Open, FileAccess.Read);
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if(doslStream.Length > 26)
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{
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byte[] doslB = new byte[26];
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doslStream.Read(doslB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(doslB);
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doslStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = dosAppleDoubleLower;
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}
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}
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// Check AppleDouble created by Netatalk
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if(File.Exists(netatalkAppleDouble))
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{
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var netatalkStream = new FileStream(netatalkAppleDouble, FileMode.Open, FileAccess.Read);
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if(netatalkStream.Length > 26)
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{
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byte[] netatalkB = new byte[26];
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netatalkStream.Read(netatalkB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(netatalkB);
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netatalkStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = netatalkAppleDouble;
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}
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}
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// Check AppleDouble created by DAVE
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if(File.Exists(daveAppleDouble))
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{
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var daveStream = new FileStream(daveAppleDouble, FileMode.Open, FileAccess.Read);
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if(daveStream.Length > 26)
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{
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byte[] daveB = new byte[26];
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daveStream.Read(daveB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(daveB);
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daveStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = daveAppleDouble;
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}
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}
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// Check AppleDouble created by Mac OS X
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if(File.Exists(osxAppleDouble))
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{
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var osxStream = new FileStream(osxAppleDouble, FileMode.Open, FileAccess.Read);
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if(osxStream.Length > 26)
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{
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byte[] osxB = new byte[26];
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osxStream.Read(osxB, 0, 26);
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_header = Marshal.ByteArrayToStructureBigEndian<Header>(osxB);
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osxStream.Close();
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if(_header.magic == MAGIC &&
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(_header.version == VERSION || _header.version == VERSION2))
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_headerPath = osxAppleDouble;
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}
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}
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// Check AppleDouble created by UnAr (from The Unarchiver)
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if(File.Exists(unArAppleDouble))
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{
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var unarStream = new FileStream(unArAppleDouble, FileMode.Open, FileAccess.Read);
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if(unarStream.Length > 26)
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{
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byte[] unarB = new byte[26];
|
|
unarStream.Read(unarB, 0, 26);
|
|
_header = Marshal.ByteArrayToStructureBigEndian<Header>(unarB);
|
|
unarStream.Close();
|
|
|
|
if(_header.magic == MAGIC &&
|
|
(_header.version == VERSION || _header.version == VERSION2))
|
|
_headerPath = unArAppleDouble;
|
|
}
|
|
}
|
|
|
|
var fs = new FileStream(_headerPath, FileMode.Open, FileAccess.Read);
|
|
fs.Seek(0, SeekOrigin.Begin);
|
|
|
|
byte[] hdrB = new byte[26];
|
|
fs.Read(hdrB, 0, 26);
|
|
_header = Marshal.ByteArrayToStructureBigEndian<Header>(hdrB);
|
|
|
|
Entry[] entries = new Entry[_header.entries];
|
|
|
|
for(int i = 0; i < _header.entries; i++)
|
|
{
|
|
byte[] entry = new byte[12];
|
|
fs.Read(entry, 0, 12);
|
|
entries[i] = Marshal.ByteArrayToStructureBigEndian<Entry>(entry);
|
|
}
|
|
|
|
_creationTime = DateTime.UtcNow;
|
|
_lastWriteTime = _creationTime;
|
|
|
|
foreach(Entry entry in entries)
|
|
switch((EntryId)entry.id)
|
|
{
|
|
case EntryId.DataFork:
|
|
// AppleDouble have datafork in separated file
|
|
break;
|
|
case EntryId.FileDates:
|
|
fs.Seek(entry.offset, SeekOrigin.Begin);
|
|
byte[] datesB = new byte[16];
|
|
fs.Read(datesB, 0, 16);
|
|
|
|
FileDates dates = Marshal.ByteArrayToStructureBigEndian<FileDates>(datesB);
|
|
|
|
_creationTime = DateHandlers.UnixUnsignedToDateTime(dates.creationDate);
|
|
_lastWriteTime = DateHandlers.UnixUnsignedToDateTime(dates.modificationDate);
|
|
|
|
break;
|
|
case EntryId.FileInfo:
|
|
fs.Seek(entry.offset, SeekOrigin.Begin);
|
|
byte[] finfo = new byte[entry.length];
|
|
fs.Read(finfo, 0, finfo.Length);
|
|
|
|
if(_macintoshHome.SequenceEqual(_header.homeFilesystem))
|
|
{
|
|
MacFileInfo macinfo = Marshal.ByteArrayToStructureBigEndian<MacFileInfo>(finfo);
|
|
|
|
_creationTime = DateHandlers.MacToDateTime(macinfo.creationDate);
|
|
_lastWriteTime = DateHandlers.MacToDateTime(macinfo.modificationDate);
|
|
}
|
|
else if(_proDosHome.SequenceEqual(_header.homeFilesystem))
|
|
{
|
|
ProDOSFileInfo prodosinfo = Marshal.ByteArrayToStructureBigEndian<ProDOSFileInfo>(finfo);
|
|
|
|
_creationTime = DateHandlers.MacToDateTime(prodosinfo.creationDate);
|
|
_lastWriteTime = DateHandlers.MacToDateTime(prodosinfo.modificationDate);
|
|
}
|
|
else if(_unixHome.SequenceEqual(_header.homeFilesystem))
|
|
{
|
|
UnixFileInfo unixinfo = Marshal.ByteArrayToStructureBigEndian<UnixFileInfo>(finfo);
|
|
|
|
_creationTime = DateHandlers.UnixUnsignedToDateTime(unixinfo.creationDate);
|
|
_lastWriteTime = DateHandlers.UnixUnsignedToDateTime(unixinfo.modificationDate);
|
|
}
|
|
else if(_dosHome.SequenceEqual(_header.homeFilesystem))
|
|
{
|
|
DOSFileInfo dosinfo = Marshal.ByteArrayToStructureBigEndian<DOSFileInfo>(finfo);
|
|
|
|
_lastWriteTime =
|
|
DateHandlers.DosToDateTime(dosinfo.modificationDate, dosinfo.modificationTime);
|
|
}
|
|
|
|
break;
|
|
case EntryId.ResourceFork:
|
|
_rsrcFork = entry;
|
|
|
|
break;
|
|
}
|
|
|
|
_dataFork = new Entry
|
|
{
|
|
id = (uint)EntryId.DataFork
|
|
};
|
|
|
|
if(File.Exists(path))
|
|
{
|
|
var dataFs = new FileStream(path, FileMode.Open, FileAccess.Read);
|
|
_dataFork.length = (uint)dataFs.Length;
|
|
dataFs.Close();
|
|
}
|
|
|
|
fs.Close();
|
|
_opened = true;
|
|
_basePath = path;
|
|
}
|
|
|
|
enum EntryId : uint
|
|
{
|
|
Invalid = 0, DataFork = 1, ResourceFork = 2,
|
|
RealName = 3, Comment = 4, Icon = 5,
|
|
ColorIcon = 6, FileInfo = 7, FileDates = 8,
|
|
FinderInfo = 9, MacFileInfo = 10, ProDOSFileInfo = 11,
|
|
DOSFileInfo = 12, ShortName = 13, AfpFileInfo = 14,
|
|
DirectoryID = 15
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct Header
|
|
{
|
|
public readonly uint magic;
|
|
public readonly uint version;
|
|
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
|
|
public readonly byte[] homeFilesystem;
|
|
public readonly ushort entries;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
struct Entry
|
|
{
|
|
public uint id;
|
|
public readonly uint offset;
|
|
public uint length;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct FileDates
|
|
{
|
|
public readonly uint creationDate;
|
|
public readonly uint modificationDate;
|
|
public readonly uint backupDate;
|
|
public readonly uint accessDate;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct MacFileInfo
|
|
{
|
|
public readonly uint creationDate;
|
|
public readonly uint modificationDate;
|
|
public readonly uint backupDate;
|
|
public readonly uint accessDate;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct UnixFileInfo
|
|
{
|
|
public readonly uint creationDate;
|
|
public readonly uint accessDate;
|
|
public readonly uint modificationDate;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct DOSFileInfo
|
|
{
|
|
public readonly ushort modificationDate;
|
|
public readonly ushort modificationTime;
|
|
public readonly ushort attributes;
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential, Pack = 1)]
|
|
readonly struct ProDOSFileInfo
|
|
{
|
|
public readonly uint creationDate;
|
|
public readonly uint modificationDate;
|
|
public readonly uint backupDate;
|
|
public readonly ushort access;
|
|
public readonly ushort fileType;
|
|
public readonly uint auxType;
|
|
}
|
|
}
|
|
} |