mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
375 lines
11 KiB
C#
375 lines
11 KiB
C#
// /***************************************************************************
|
|
// Aaru Data Preservation Suite
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// Filename : Write.cs
|
|
// Author(s) : Natalia Portillo <claunia@claunia.com>
|
|
//
|
|
// Component : Disk image plugins.
|
|
//
|
|
// --[ Description ] ----------------------------------------------------------
|
|
//
|
|
// Writes VirtualBox disk images.
|
|
//
|
|
// --[ License ] --------------------------------------------------------------
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; either version 2.1 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful, but
|
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
// Copyright © 2011-2025 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Runtime.InteropServices;
|
|
using Aaru.CommonTypes;
|
|
using Aaru.CommonTypes.AaruMetadata;
|
|
using Aaru.CommonTypes.Enums;
|
|
using Aaru.CommonTypes.Structs;
|
|
using Aaru.Helpers;
|
|
using Aaru.Logging;
|
|
using Marshal = Aaru.Helpers.Marshal;
|
|
|
|
namespace Aaru.Images;
|
|
|
|
public sealed partial class Vdi
|
|
{
|
|
#region IWritableImage Members
|
|
|
|
/// <inheritdoc />
|
|
public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
|
|
uint negativeSectors, uint overflowSectors, uint sectorSize)
|
|
{
|
|
if(sectorSize != 512)
|
|
{
|
|
ErrorMessage = Localization.Unsupported_sector_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(negativeSectors != 0)
|
|
{
|
|
ErrorMessage = Localization.Negative_sectors_are_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(overflowSectors != 0)
|
|
{
|
|
ErrorMessage = Localization.Overflow_sectors_are_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(!SupportedMediaTypes.Contains(mediaType))
|
|
{
|
|
ErrorMessage = string.Format(Localization.Unsupported_media_format_0, mediaType);
|
|
|
|
return false;
|
|
}
|
|
|
|
if(sectors * sectorSize / DEFAULT_BLOCK_SIZE > uint.MaxValue)
|
|
{
|
|
ErrorMessage = Localization.Too_many_sectors_for_selected_cluster_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
_imageInfo = new ImageInfo
|
|
{
|
|
MediaType = mediaType,
|
|
SectorSize = sectorSize,
|
|
Sectors = sectors
|
|
};
|
|
|
|
try
|
|
{
|
|
_writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None);
|
|
}
|
|
catch(IOException ex)
|
|
{
|
|
ErrorMessage = string.Format(Localization.Could_not_create_new_image_file_exception_0, ex.Message);
|
|
AaruLogging.Exception(ex, Localization.Could_not_create_new_image_file_exception_0, ex.Message);
|
|
|
|
return false;
|
|
}
|
|
|
|
var ibmEntries = (uint)(sectors * sectorSize / DEFAULT_BLOCK_SIZE);
|
|
|
|
if(sectors * sectorSize % DEFAULT_BLOCK_SIZE > 0) ibmEntries++;
|
|
|
|
uint headerSectors = 1 + ibmEntries * 4 / sectorSize;
|
|
|
|
if(ibmEntries * 4 % sectorSize != 0) headerSectors++;
|
|
|
|
_ibm = new uint[ibmEntries];
|
|
_currentWritingPosition = headerSectors * sectorSize;
|
|
|
|
_vHdr = new Header
|
|
{
|
|
creator = DIC_AARU,
|
|
magic = VDI_MAGIC,
|
|
majorVersion = 1,
|
|
minorVersion = 1,
|
|
headerSize = Marshal.SizeOf<Header>() - 72,
|
|
imageType = VdiImageType.Normal,
|
|
offsetBlocks = sectorSize,
|
|
offsetData = (uint)_currentWritingPosition,
|
|
sectorSize = sectorSize,
|
|
size = sectors * sectorSize,
|
|
blockSize = DEFAULT_BLOCK_SIZE,
|
|
blocks = ibmEntries,
|
|
uuid = Guid.NewGuid(),
|
|
snapshotUuid = Guid.NewGuid()
|
|
};
|
|
|
|
for(uint i = 0; i < ibmEntries; i++) _ibm[i] = VDI_EMPTY;
|
|
|
|
IsWriting = true;
|
|
ErrorMessage = null;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteMediaTag(byte[] data, MediaTagType tag)
|
|
{
|
|
ErrorMessage = Localization.Writing_media_tags_is_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteSector(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(negative)
|
|
{
|
|
ErrorMessage = Localization.Unsupported_feature;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(data.Length != _imageInfo.SectorSize)
|
|
{
|
|
ErrorMessage = Localization.Incorrect_data_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(sectorAddress >= _imageInfo.Sectors)
|
|
{
|
|
ErrorMessage = Localization.Tried_to_write_past_image_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
// Ignore empty sectors
|
|
if(ArrayHelpers.ArrayIsNullOrEmpty(data)) return true;
|
|
|
|
ulong index = sectorAddress * _vHdr.sectorSize / _vHdr.blockSize;
|
|
ulong secOff = sectorAddress * _vHdr.sectorSize % _vHdr.blockSize;
|
|
|
|
uint ibmOff = _ibm[index];
|
|
|
|
if(ibmOff == VDI_EMPTY)
|
|
{
|
|
ibmOff = (uint)((_currentWritingPosition - _vHdr.offsetData) / _vHdr.blockSize);
|
|
_ibm[index] = ibmOff;
|
|
_currentWritingPosition += _vHdr.blockSize;
|
|
_vHdr.allocatedBlocks++;
|
|
}
|
|
|
|
ulong imageOff = _vHdr.offsetData + (ulong)ibmOff * _vHdr.blockSize;
|
|
|
|
_writingStream.Seek((long)imageOff, SeekOrigin.Begin);
|
|
_writingStream.Seek((long)secOff, SeekOrigin.Current);
|
|
_writingStream.Write(data, 0, data.Length);
|
|
|
|
ErrorMessage = "";
|
|
|
|
return true;
|
|
}
|
|
|
|
// TODO: This can be optimized
|
|
/// <inheritdoc />
|
|
public bool WriteSectors(byte[] data, ulong sectorAddress, bool negative, uint length, SectorStatus[] sectorStatus)
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = Localization.Tried_to_write_on_a_non_writable_image;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(negative)
|
|
{
|
|
ErrorMessage = Localization.Unsupported_feature;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(data.Length % _imageInfo.SectorSize != 0)
|
|
{
|
|
ErrorMessage = Localization.Incorrect_data_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(sectorAddress + length > _imageInfo.Sectors)
|
|
{
|
|
ErrorMessage = Localization.Tried_to_write_past_image_size;
|
|
|
|
return false;
|
|
}
|
|
|
|
// Ignore empty sectors
|
|
if(ArrayHelpers.ArrayIsNullOrEmpty(data)) return true;
|
|
|
|
for(uint i = 0; i < length; i++)
|
|
{
|
|
var tmp = new byte[_imageInfo.SectorSize];
|
|
Array.Copy(data, i * _imageInfo.SectorSize, tmp, 0, _imageInfo.SectorSize);
|
|
|
|
if(!WriteSector(tmp, sectorAddress + i, false, sectorStatus[i])) return false;
|
|
}
|
|
|
|
ErrorMessage = "";
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteSectorLong(byte[] data, ulong sectorAddress, bool negative, SectorStatus sectorStatus)
|
|
{
|
|
ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteSectorsLong(byte[] data, ulong sectorAddress, bool negative, uint length,
|
|
SectorStatus[] sectorStatus)
|
|
{
|
|
ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool Close()
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = Localization.Image_is_not_opened_for_writing;
|
|
|
|
return false;
|
|
}
|
|
|
|
if(!string.IsNullOrEmpty(_imageInfo.Comments))
|
|
_vHdr.comments = _imageInfo.Comments.Length > 255 ? _imageInfo.Comments[..255] : _imageInfo.Comments;
|
|
|
|
if(_vHdr.logicalCylinders == 0)
|
|
{
|
|
_vHdr.logicalCylinders = (uint)(_imageInfo.Sectors / 16 / 63);
|
|
_vHdr.logicalHeads = 16;
|
|
_vHdr.logicalSpt = 63;
|
|
|
|
while(_vHdr.logicalCylinders == 0)
|
|
{
|
|
_vHdr.logicalHeads--;
|
|
|
|
if(_vHdr.logicalHeads == 0)
|
|
{
|
|
_vHdr.logicalSpt--;
|
|
_vHdr.logicalHeads = 16;
|
|
}
|
|
|
|
_vHdr.logicalCylinders = (uint)(_imageInfo.Sectors / _vHdr.logicalHeads / _vHdr.logicalSpt);
|
|
|
|
if(_vHdr.logicalCylinders == 0 && _vHdr is { logicalHeads: 0, logicalSpt: 0 }) break;
|
|
}
|
|
}
|
|
|
|
var hdr = new byte[Marshal.SizeOf<Header>()];
|
|
nint hdrPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(Marshal.SizeOf<Header>());
|
|
System.Runtime.InteropServices.Marshal.StructureToPtr(_vHdr, hdrPtr, true);
|
|
System.Runtime.InteropServices.Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
|
|
System.Runtime.InteropServices.Marshal.FreeHGlobal(hdrPtr);
|
|
|
|
_writingStream.Seek(0, SeekOrigin.Begin);
|
|
_writingStream.Write(hdr, 0, hdr.Length);
|
|
|
|
_writingStream.Seek(_vHdr.offsetBlocks, SeekOrigin.Begin);
|
|
_writingStream.Write(MemoryMarshal.Cast<uint, byte>(_ibm).ToArray(), 0, 4 * _ibm.Length);
|
|
|
|
_writingStream.Flush();
|
|
_writingStream.Close();
|
|
|
|
IsWriting = false;
|
|
ErrorMessage = "";
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool SetImageInfo(ImageInfo imageInfo)
|
|
{
|
|
_imageInfo.Comments = imageInfo.Comments;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack)
|
|
{
|
|
_vHdr.cylinders = cylinders;
|
|
_vHdr.heads = heads;
|
|
_vHdr.spt = sectorsPerTrack;
|
|
|
|
return true;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteSectorTag(byte[] data, ulong sectorAddress, bool negative, SectorTagType tag)
|
|
{
|
|
ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool WriteSectorsTag(byte[] data, ulong sectorAddress, bool negative, uint length, SectorTagType tag)
|
|
{
|
|
ErrorMessage = Localization.Writing_sectors_with_tags_is_not_supported;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public bool SetDumpHardware(List<DumpHardware> dumpHardware) => false;
|
|
|
|
/// <inheritdoc />
|
|
public bool SetMetadata(Metadata metadata) => false;
|
|
|
|
#endregion
|
|
} |