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https://github.com/aaru-dps/Aaru.git
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413 lines
15 KiB
C#
413 lines
15 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Read.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Reads Apple Disk Archival/Retrieval Tool format.
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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 © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.IO;
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using System.Text.RegularExpressions;
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using Aaru.CommonTypes;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Compression;
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using Aaru.Helpers;
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using Aaru.Logging;
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using Claunia.Encoding;
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using Claunia.RsrcFork;
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using Sentry;
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using Version = Resources.Version;
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namespace Aaru.Images;
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public sealed partial class Dart
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{
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#region IMediaImage Members
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/// <inheritdoc />
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public ErrorNumber Open(IFilter imageFilter)
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{
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Stream stream = imageFilter.GetDataForkStream();
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if(stream.Length < 84) return ErrorNumber.InvalidArgument;
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stream.Seek(0, SeekOrigin.Begin);
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var headerB = new byte[Marshal.SizeOf<Header>()];
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stream.EnsureRead(headerB, 0, Marshal.SizeOf<Header>());
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Header header = Marshal.ByteArrayToStructureBigEndian<Header>(headerB);
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if(header.srcCmp > COMPRESS_NONE) return ErrorNumber.NotSupported;
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int expectedMaxSize = 84 + header.srcSize * 2 * 524;
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switch(header.srcType)
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{
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case DISK_MAC:
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if(header.srcSize != SIZE_MAC_SS && header.srcSize != SIZE_MAC) return ErrorNumber.InvalidArgument;
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break;
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case DISK_LISA:
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if(header.srcSize != SIZE_LISA) return ErrorNumber.InvalidArgument;
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break;
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case DISK_APPLE2:
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if(header.srcSize != DISK_APPLE2) return ErrorNumber.InvalidArgument;
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break;
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case DISK_MAC_HD:
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if(header.srcSize != SIZE_MAC_HD) return ErrorNumber.InvalidArgument;
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expectedMaxSize += 64;
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break;
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case DISK_DOS:
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if(header.srcSize != SIZE_DOS) return ErrorNumber.InvalidArgument;
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break;
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case DISK_DOS_HD:
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if(header.srcSize != SIZE_DOS_HD) return ErrorNumber.InvalidArgument;
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expectedMaxSize += 64;
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break;
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default:
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return ErrorNumber.InvalidArgument;
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}
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if(stream.Length > expectedMaxSize) return ErrorNumber.InvalidArgument;
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var bLength =
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new short[header.srcType is DISK_MAC_HD or DISK_DOS_HD ? BLOCK_ARRAY_LEN_HIGH : BLOCK_ARRAY_LEN_LOW];
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for(var i = 0; i < bLength.Length; i++)
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{
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var tmpShort = new byte[2];
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stream.EnsureRead(tmpShort, 0, 2);
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bLength[i] = BigEndianBitConverter.ToInt16(tmpShort, 0);
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}
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var dataMs = new MemoryStream();
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var tagMs = new MemoryStream();
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foreach(short l in bLength)
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{
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if(l == 0) continue;
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var buffer = new byte[BUFFER_SIZE];
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if(l == -1)
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{
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stream.EnsureRead(buffer, 0, BUFFER_SIZE);
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dataMs.Write(buffer, 0, DATA_SIZE);
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tagMs.Write(buffer, DATA_SIZE, TAG_SIZE);
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}
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else
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{
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byte[] temp;
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if(header.srcCmp == COMPRESS_RLE)
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{
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temp = new byte[l * 2];
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stream.EnsureRead(temp, 0, temp.Length);
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buffer = new byte[BUFFER_SIZE];
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AppleRle.DecodeBuffer(temp, buffer);
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dataMs.Write(buffer, 0, DATA_SIZE);
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tagMs.Write(buffer, DATA_SIZE, TAG_SIZE);
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}
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else
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{
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temp = new byte[l];
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stream.EnsureRead(temp, 0, temp.Length);
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AaruLogging.Error(Localization.LZH_Compressed_images_not_yet_supported);
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return ErrorNumber.NotImplemented;
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}
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}
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}
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_dataCache = dataMs.ToArray();
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if(header.srcType is DISK_LISA or DISK_MAC or DISK_APPLE2)
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{
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_imageInfo.ReadableSectorTags.Add(SectorTagType.AppleSonyTag);
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_tagCache = tagMs.ToArray();
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}
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try
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{
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if(imageFilter.HasResourceFork)
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{
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var rsrcFork = new ResourceFork(imageFilter.GetResourceForkStream());
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// "vers"
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if(rsrcFork.ContainsKey(0x76657273))
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{
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Resource versRsrc = rsrcFork.GetResource(0x76657273);
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byte[] vers = versRsrc?.GetResource(versRsrc.GetIds()[0]);
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if(vers != null)
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{
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var version = new Version(vers);
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string release = null;
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string pre = null;
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var major = $"{version.MajorVersion}";
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var minor = $".{version.MinorVersion / 10}";
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if(version.MinorVersion % 10 > 0) release = $".{version.MinorVersion % 10}";
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string dev = version.DevStage switch
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{
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Version.DevelopmentStage.Alpha => "a",
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Version.DevelopmentStage.Beta => "b",
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Version.DevelopmentStage.PreAlpha => "d",
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_ => null
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};
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if(dev == null && version.PreReleaseVersion > 0) dev = "f";
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if(dev != null) pre = $"{version.PreReleaseVersion}";
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_imageInfo.ApplicationVersion = $"{major}{minor}{release}{dev}{pre}";
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_imageInfo.Application = version.VersionString;
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_imageInfo.Comments = version.VersionMessage;
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}
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}
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// "dart"
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if(rsrcFork.ContainsKey(0x44415254))
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{
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Resource dartRsrc = rsrcFork.GetResource(0x44415254);
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if(dartRsrc != null)
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{
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string dArt = StringHandlers.PascalToString(dartRsrc.GetResource(dartRsrc.GetIds()[0]),
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Encoding.GetEncoding("macintosh"));
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Regex dArtEx = DartRegex();
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Match dArtMatch = dArtEx.Match(dArt);
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if(dArtMatch.Success)
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{
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_imageInfo.Application = "DART";
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_imageInfo.ApplicationVersion = dArtMatch.Groups["version"].Value;
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_dataChecksum = Convert.ToUInt32(dArtMatch.Groups["datachk"].Value, 16);
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_tagChecksum = Convert.ToUInt32(dArtMatch.Groups["tagchk"].Value, 16);
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}
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}
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}
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// "cksm"
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if(rsrcFork.ContainsKey(0x434B534D))
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{
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Resource cksmRsrc = rsrcFork.GetResource(0x434B534D);
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if(cksmRsrc?.ContainsId(1) == true)
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{
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byte[] tagChk = cksmRsrc.GetResource(1);
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_tagChecksum = BigEndianBitConverter.ToUInt32(tagChk, 0);
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}
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if(cksmRsrc?.ContainsId(2) == true)
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{
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byte[] dataChk = cksmRsrc.GetResource(1);
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_dataChecksum = BigEndianBitConverter.ToUInt32(dataChk, 0);
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}
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}
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}
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}
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catch(InvalidCastException ex)
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{
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SentrySdk.CaptureException(ex);
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}
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AaruLogging.Debug(MODULE_NAME,
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Localization.Image_application_0_version_1,
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_imageInfo.Application,
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_imageInfo.ApplicationVersion);
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_imageInfo.Sectors = (ulong)(header.srcSize * 2);
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_imageInfo.CreationTime = imageFilter.CreationTime;
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_imageInfo.LastModificationTime = imageFilter.LastWriteTime;
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_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.Filename);
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_imageInfo.SectorSize = SECTOR_SIZE;
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_imageInfo.MetadataMediaType = MetadataMediaType.BlockMedia;
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_imageInfo.ImageSize = _imageInfo.Sectors * SECTOR_SIZE;
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_imageInfo.Version = header.srcCmp == COMPRESS_NONE ? "1.4" : "1.5";
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switch(header.srcSize)
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{
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case SIZE_MAC_SS:
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_imageInfo.Cylinders = 80;
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_imageInfo.Heads = 1;
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_imageInfo.SectorsPerTrack = 10;
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_imageInfo.MediaType = MediaType.AppleSonySS;
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break;
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case SIZE_MAC:
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_imageInfo.Cylinders = 80;
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_imageInfo.Heads = 2;
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_imageInfo.SectorsPerTrack = 10;
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_imageInfo.MediaType = MediaType.AppleSonyDS;
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break;
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case SIZE_DOS:
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_imageInfo.Cylinders = 80;
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_imageInfo.Heads = 2;
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_imageInfo.SectorsPerTrack = 9;
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_imageInfo.MediaType = MediaType.DOS_35_DS_DD_9;
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break;
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case SIZE_MAC_HD:
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_imageInfo.Cylinders = 80;
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_imageInfo.Heads = 2;
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_imageInfo.SectorsPerTrack = 18;
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_imageInfo.MediaType = MediaType.DOS_35_HD;
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break;
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}
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return ErrorNumber.NoError;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSector(ulong sectorAddress, bool negative, out byte[] buffer, out SectorStatus sectorStatus)
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{
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sectorStatus = SectorStatus.Dumped;
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return ReadSectors(sectorAddress, negative, 1, out buffer, out _);
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectorTag(ulong sectorAddress, bool negative, SectorTagType tag, out byte[] buffer) =>
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ReadSectorsTag(sectorAddress, negative, 1, tag, out buffer);
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/// <inheritdoc />
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public ErrorNumber ReadSectors(ulong sectorAddress, bool negative, uint length, out byte[] buffer,
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out SectorStatus[] sectorStatus)
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{
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buffer = null;
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sectorStatus = null;
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if(negative) return ErrorNumber.NotSupported;
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if(sectorAddress > _imageInfo.Sectors - 1) return ErrorNumber.OutOfRange;
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if(sectorAddress + length > _imageInfo.Sectors) return ErrorNumber.OutOfRange;
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buffer = new byte[length * _imageInfo.SectorSize];
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sectorStatus = new SectorStatus[length];
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for(uint i = 0; i < length; i++) sectorStatus[i] = SectorStatus.Dumped;
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Array.Copy(_dataCache, (int)sectorAddress * _imageInfo.SectorSize, buffer, 0, length * _imageInfo.SectorSize);
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return ErrorNumber.NoError;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectorsTag(ulong sectorAddress, bool negative, uint length, SectorTagType tag,
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out byte[] buffer)
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{
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buffer = null;
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if(negative) return ErrorNumber.NotSupported;
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if(tag != SectorTagType.AppleSonyTag) return ErrorNumber.NotSupported;
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if(_tagCache == null || _tagCache.Length == 0) return ErrorNumber.NoData;
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if(sectorAddress > _imageInfo.Sectors - 1) return ErrorNumber.OutOfRange;
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if(sectorAddress + length > _imageInfo.Sectors) return ErrorNumber.OutOfRange;
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buffer = new byte[length * TAG_SECTOR_SIZE];
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Array.Copy(_tagCache, (int)sectorAddress * TAG_SECTOR_SIZE, buffer, 0, length * TAG_SECTOR_SIZE);
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return ErrorNumber.NoError;
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectorLong(ulong sectorAddress, bool negative, out byte[] buffer,
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out SectorStatus sectorStatus)
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{
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sectorStatus = SectorStatus.Dumped;
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return ReadSectorsLong(sectorAddress, negative, 1, out buffer, out _);
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}
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/// <inheritdoc />
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public ErrorNumber ReadSectorsLong(ulong sectorAddress, bool negative, uint length, out byte[] buffer,
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out SectorStatus[] sectorStatus)
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{
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buffer = null;
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sectorStatus = null;
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if(negative) return ErrorNumber.NotSupported;
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if(sectorAddress > _imageInfo.Sectors - 1) return ErrorNumber.OutOfRange;
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if(sectorAddress + length > _imageInfo.Sectors) return ErrorNumber.OutOfRange;
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ErrorNumber errno = ReadSectors(sectorAddress, false, length, out byte[] data, out sectorStatus);
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if(errno != ErrorNumber.NoError) return errno;
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errno = ReadSectorsTag(sectorAddress, false, length, SectorTagType.AppleSonyTag, out byte[] tags);
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if(errno != ErrorNumber.NoError) return errno;
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buffer = new byte[data.Length + tags.Length];
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for(uint i = 0; i < length; i++)
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{
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Array.Copy(data,
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i * _imageInfo.SectorSize,
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buffer,
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i * (_imageInfo.SectorSize + TAG_SECTOR_SIZE),
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_imageInfo.SectorSize);
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Array.Copy(tags,
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i * TAG_SECTOR_SIZE,
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buffer,
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i * (_imageInfo.SectorSize + TAG_SECTOR_SIZE) + _imageInfo.SectorSize,
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TAG_SECTOR_SIZE);
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}
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return ErrorNumber.NoError;
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}
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#endregion
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} |