mirror of
https://github.com/aaru-dps/Aaru.git
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349 lines
9.8 KiB
C#
349 lines
9.8 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 NHD r0 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;
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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.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.Helpers;
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using Aaru.Logging;
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namespace Aaru.Images;
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public sealed partial class Nhdr0
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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(sectorSize != 0)
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{
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ErrorMessage = Localization.Unsupported_sector_size;
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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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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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_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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if(!IsWriting)
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{
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ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
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return false;
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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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if(data.Length != _imageInfo.SectorSize)
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{
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ErrorMessage = Localization.Incorrect_data_size;
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return false;
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}
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if(sectorAddress >= _imageInfo.Sectors)
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{
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ErrorMessage = Localization.Tried_to_write_past_image_size;
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return false;
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}
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_writingStream.Seek((long)((ulong)Marshal.SizeOf<Header>() + sectorAddress * _imageInfo.SectorSize),
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SeekOrigin.Begin);
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_writingStream.Write(data, 0, data.Length);
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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 WriteSectors(byte[] data, ulong sectorAddress, bool negative, uint length, SectorStatus[] sectorStatus)
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{
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if(!IsWriting)
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{
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ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
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return false;
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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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if(data.Length % 512 != 0)
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{
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ErrorMessage = Localization.Incorrect_data_size;
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return false;
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}
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if(sectorAddress + length > _imageInfo.Sectors)
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{
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ErrorMessage = Localization.Tried_to_write_past_image_size;
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return false;
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}
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_writingStream.Seek((long)((ulong)Marshal.SizeOf<Header>() + sectorAddress * _imageInfo.SectorSize),
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SeekOrigin.Begin);
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_writingStream.Write(data, 0, data.Length);
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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 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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/// <inheritdoc />
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public bool Close()
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{
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if(!IsWriting)
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{
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ErrorMessage = Localization.Image_is_not_opened_for_writing;
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return false;
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}
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if(_imageInfo.Cylinders == 0)
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{
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_imageInfo.Cylinders = (uint)(_imageInfo.Sectors / 8 / 17);
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_imageInfo.Heads = 8;
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_imageInfo.SectorsPerTrack = 17;
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while(_imageInfo.Cylinders == 0)
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{
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_imageInfo.Heads--;
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if(_imageInfo.Heads == 0)
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{
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_imageInfo.SectorsPerTrack--;
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_imageInfo.Heads = 16;
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}
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_imageInfo.Cylinders = (uint)(_imageInfo.Sectors / _imageInfo.Heads / _imageInfo.SectorsPerTrack);
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if(_imageInfo.Cylinders == 0 && _imageInfo is { Heads: 0, SectorsPerTrack: 0 }) break;
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}
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}
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var header = new Header
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{
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szFileID = _signature,
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szComment = new byte[0x100],
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dwHeadSize = Marshal.SizeOf<Header>(),
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dwCylinder = (byte)_imageInfo.Cylinders,
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wHead = (byte)_imageInfo.Heads,
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wSect = (byte)_imageInfo.SectorsPerTrack,
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wSectLen = (byte)_imageInfo.SectorSize,
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reserved2 = new byte[2],
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reserved3 = new byte[0xE0]
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};
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if(!string.IsNullOrEmpty(_imageInfo.Comments))
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{
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byte[] commentBytes = Encoding.GetEncoding("shift_jis").GetBytes(_imageInfo.Comments);
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Array.Copy(commentBytes,
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0,
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header.szComment,
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0,
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commentBytes.Length >= 0x100 ? 0x100 : commentBytes.Length);
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}
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var hdr = new byte[Marshal.SizeOf<Header>()];
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nint hdrPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf<Header>());
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System.Runtime.InteropServices.Marshal.StructureToPtr(header, hdrPtr, true);
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System.Runtime.InteropServices.Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
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System.Runtime.InteropServices.Marshal.FreeHGlobal(hdrPtr);
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_writingStream.Seek(0, SeekOrigin.Begin);
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_writingStream.Write(hdr, 0, hdr.Length);
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_writingStream.Flush();
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_writingStream.Close();
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IsWriting = false;
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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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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 > int.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 > short.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 > short.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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_imageInfo.SectorsPerTrack = sectorsPerTrack;
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_imageInfo.Heads = heads;
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_imageInfo.Cylinders = cylinders;
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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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} |