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366 lines
11 KiB
C#
366 lines
11 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Write.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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// Writes Apridisk disk images.
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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.Collections.Generic;
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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 System.Text;
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using Aaru.CommonTypes;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Structs;
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using Aaru.Logging;
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using Marshal = Aaru.Helpers.Marshal;
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namespace Aaru.Images;
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public sealed partial class Apridisk
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{
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#region IWritableImage Members
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/// <inheritdoc />
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public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
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uint negativeSectors, uint overflowSectors, uint sectorSize)
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{
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if(!SupportedMediaTypes.Contains(mediaType))
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{
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ErrorMessage = string.Format(Localization.Unsupported_media_format_0, mediaType);
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return false;
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}
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if(negativeSectors != 0)
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{
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ErrorMessage = Localization.Negative_sectors_are_not_supported;
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return false;
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}
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if(overflowSectors != 0)
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{
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ErrorMessage = Localization.Overflow_sectors_are_not_supported;
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return false;
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}
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_imageInfo = new ImageInfo
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{
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MediaType = mediaType,
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SectorSize = sectorSize,
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Sectors = sectors
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};
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try
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{
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_writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None);
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}
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catch(IOException ex)
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{
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ErrorMessage = string.Format(Localization.Could_not_create_new_image_file_exception_0, ex.Message);
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AaruLogging.Exception(ex, Localization.Could_not_create_new_image_file_exception_0, ex.Message);
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return false;
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}
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IsWriting = true;
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ErrorMessage = null;
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return true;
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}
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/// <inheritdoc />
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public bool WriteMediaTag(byte[] data, MediaTagType tag)
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{
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ErrorMessage = Localization.Writing_media_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSector(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
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{
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(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
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if(negative)
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{
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ErrorMessage = Localization.Unsupported_feature;
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return false;
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}
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if(cylinder >= _sectorsData.Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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if(head >= _sectorsData[cylinder].Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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if(sector > _sectorsData[cylinder][head].Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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_sectorsData[cylinder][head][sector] = data;
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return true;
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}
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/// <inheritdoc />
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public bool WriteSectors(byte[] data, ulong sectorAddress, bool negative, uint length, SectorStatus[] sectorStatus)
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{
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if(negative)
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{
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ErrorMessage = Localization.Unsupported_feature;
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return false;
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}
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for(uint i = 0; i < length; i++)
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{
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(ushort cylinder, byte head, byte sector) = LbaToChs(sectorAddress);
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if(cylinder >= _sectorsData.Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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if(head >= _sectorsData[cylinder].Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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if(sector > _sectorsData[cylinder][head].Length)
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{
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ErrorMessage = Localization.Sector_address_not_found;
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return false;
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}
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_sectorsData[cylinder][head][sector] = data;
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}
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return true;
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}
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/// <inheritdoc />
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public bool WriteSectorLong(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSectorsLong(byte[] data, ulong sectorAddress, bool negative, uint length,
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SectorStatus[] sectorStatus)
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{
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ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
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return false;
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}
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// TODO: Try if apridisk software supports finding other chunks, to extend metadata support
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/// <inheritdoc />
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public bool Close()
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{
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_writingStream.Seek(0, SeekOrigin.Begin);
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_writingStream.Write(_signature, 0, _signature.Length);
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var hdr = new byte[Marshal.SizeOf<Record>()];
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for(ushort c = 0; c < _imageInfo.Cylinders; c++)
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{
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for(byte h = 0; h < _imageInfo.Heads; h++)
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{
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for(byte s = 0; s < _imageInfo.SectorsPerTrack; s++)
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{
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if(_sectorsData[c][h][s] == null || _sectorsData[c][h][s].Length == 0) continue;
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var record = new Record
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{
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type = RecordType.Sector,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf<Record>(),
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dataSize = (uint)_sectorsData[c][h][s].Length,
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head = h,
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sector = s,
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cylinder = c
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};
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MemoryMarshal.Write(hdr, in record);
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_writingStream.Write(hdr, 0, hdr.Length);
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_writingStream.Write(_sectorsData[c][h][s], 0, _sectorsData[c][h][s].Length);
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}
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}
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}
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if(!string.IsNullOrEmpty(_imageInfo.Creator))
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{
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byte[] creatorBytes = Encoding.UTF8.GetBytes(_imageInfo.Creator);
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var creatorRecord = new Record
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{
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type = RecordType.Creator,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf<Record>(),
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dataSize = (uint)creatorBytes.Length + 1,
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head = 0,
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sector = 0,
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cylinder = 0
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};
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MemoryMarshal.Write(hdr, in creatorRecord);
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_writingStream.Write(hdr, 0, hdr.Length);
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_writingStream.Write(creatorBytes, 0, creatorBytes.Length);
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_writingStream.WriteByte(0); // Termination
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}
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if(!string.IsNullOrEmpty(_imageInfo.Comments))
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{
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byte[] commentBytes = Encoding.UTF8.GetBytes(_imageInfo.Comments);
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var commentRecord = new Record
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{
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type = RecordType.Comment,
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compression = CompressType.Uncompresed,
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headerSize = (ushort)Marshal.SizeOf<Record>(),
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dataSize = (uint)commentBytes.Length + 1,
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head = 0,
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sector = 0,
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cylinder = 0
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};
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MemoryMarshal.Write(hdr, in commentRecord);
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_writingStream.Write(hdr, 0, hdr.Length);
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_writingStream.Write(commentBytes, 0, commentBytes.Length);
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_writingStream.WriteByte(0); // Termination
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}
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_writingStream.Flush();
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_writingStream.Close();
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IsWriting = false;
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ErrorMessage = "";
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return true;
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}
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/// <inheritdoc />
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public bool SetImageInfo(ImageInfo imageInfo)
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{
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_imageInfo.Comments = imageInfo.Comments;
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_imageInfo.Creator = imageInfo.Creator;
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return true;
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}
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/// <inheritdoc />
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public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack)
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{
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if(cylinders > ushort.MaxValue)
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{
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ErrorMessage = Localization.Too_many_cylinders;
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return false;
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}
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if(heads > byte.MaxValue)
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{
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ErrorMessage = Localization.Too_many_heads;
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return false;
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}
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if(sectorsPerTrack > byte.MaxValue)
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{
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ErrorMessage = Localization.Too_many_sectors_per_track;
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return false;
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}
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_sectorsData = new byte[cylinders][][][];
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for(ushort c = 0; c < cylinders; c++)
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{
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_sectorsData[c] = new byte[heads][][];
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for(byte h = 0; h < heads; h++) _sectorsData[c][h] = new byte[sectorsPerTrack][];
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}
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_imageInfo.Cylinders = cylinders;
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_imageInfo.Heads = heads;
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_imageInfo.SectorsPerTrack = sectorsPerTrack;
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return true;
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}
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/// <inheritdoc />
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public bool WriteSectorTag(byte[] data, ulong sectorAddress, bool negative, SectorTagType tag)
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{
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ErrorMessage = Localization.Unsupported_feature;
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return false;
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}
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/// <inheritdoc />
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public bool WriteSectorsTag(byte[] data, ulong sectorAddress, bool negative, uint length, SectorTagType tag)
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{
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ErrorMessage = Localization.Unsupported_feature;
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return false;
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}
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/// <inheritdoc />
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public bool SetDumpHardware(List<DumpHardware> dumpHardware) => false;
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/// <inheritdoc />
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public bool SetMetadata(Metadata metadata) => false;
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#endregion
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} |