mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
308 lines
10 KiB
C#
308 lines
10 KiB
C#
// /***************************************************************************
|
|
// The Disc Image Chef
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// 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 © 2011-2018 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Runtime.InteropServices;
|
|
using DiscImageChef.CommonTypes;
|
|
using DiscImageChef.CommonTypes.Enums;
|
|
using DiscImageChef.CommonTypes.Structs;
|
|
using Schemas;
|
|
|
|
namespace DiscImageChef.DiscImages
|
|
{
|
|
public partial class Vdi
|
|
{
|
|
public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
|
|
uint sectorSize)
|
|
{
|
|
if(sectorSize != 512)
|
|
{
|
|
ErrorMessage = "Unsupported sector size";
|
|
return false;
|
|
}
|
|
|
|
if(!SupportedMediaTypes.Contains(mediaType))
|
|
{
|
|
ErrorMessage = $"Unsupport media format {mediaType}";
|
|
return false;
|
|
}
|
|
|
|
if(sectors * sectorSize / DEFAULT_BLOCK_SIZE > uint.MaxValue)
|
|
{
|
|
ErrorMessage = "Too many sectors for selected cluster size";
|
|
return false;
|
|
}
|
|
|
|
imageInfo = new ImageInfo {MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors};
|
|
|
|
try { writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None); }
|
|
catch(IOException e)
|
|
{
|
|
ErrorMessage = $"Could not create new image file, exception {e.Message}";
|
|
return false;
|
|
}
|
|
|
|
uint 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 VdiHeader
|
|
{
|
|
creator = DIC_VDI,
|
|
magic = VDI_MAGIC,
|
|
majorVersion = 1,
|
|
minorVersion = 1,
|
|
headerSize = Marshal.SizeOf(typeof(VdiHeader)) - 72,
|
|
imageType = VdiImageType.Normal,
|
|
offsetBlocks = sectorSize,
|
|
offsetData = 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;
|
|
}
|
|
|
|
public bool WriteMediaTag(byte[] data, MediaTagType tag)
|
|
{
|
|
ErrorMessage = "Writing media tags is not supported.";
|
|
return false;
|
|
}
|
|
|
|
public bool WriteSector(byte[] data, ulong sectorAddress)
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = "Tried to write on a non-writable image";
|
|
return false;
|
|
}
|
|
|
|
if(data.Length != imageInfo.SectorSize)
|
|
{
|
|
ErrorMessage = "Incorrect data size";
|
|
return false;
|
|
}
|
|
|
|
if(sectorAddress >= imageInfo.Sectors)
|
|
{
|
|
ErrorMessage = "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 = (currentWritingPosition - vHdr.offsetData) / vHdr.blockSize;
|
|
ibm[index] = ibmOff;
|
|
currentWritingPosition += vHdr.blockSize;
|
|
vHdr.allocatedBlocks++;
|
|
}
|
|
|
|
ulong imageOff = vHdr.offsetData + 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
|
|
public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = "Tried to write on a non-writable image";
|
|
return false;
|
|
}
|
|
|
|
if(data.Length % imageInfo.SectorSize != 0)
|
|
{
|
|
ErrorMessage = "Incorrect data size";
|
|
return false;
|
|
}
|
|
|
|
if(sectorAddress + length > imageInfo.Sectors)
|
|
{
|
|
ErrorMessage = "Tried to write past image size";
|
|
return false;
|
|
}
|
|
|
|
// Ignore empty sectors
|
|
if(ArrayHelpers.ArrayIsNullOrEmpty(data)) return true;
|
|
|
|
for(uint i = 0; i < length; i++)
|
|
{
|
|
byte[] tmp = new byte[imageInfo.SectorSize];
|
|
Array.Copy(data, i * imageInfo.SectorSize, tmp, 0, imageInfo.SectorSize);
|
|
if(!WriteSector(tmp, sectorAddress + i)) return false;
|
|
}
|
|
|
|
ErrorMessage = "";
|
|
return true;
|
|
}
|
|
|
|
public bool WriteSectorLong(byte[] data, ulong sectorAddress)
|
|
{
|
|
ErrorMessage = "Writing sectors with tags is not supported.";
|
|
return false;
|
|
}
|
|
|
|
public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
|
|
{
|
|
ErrorMessage = "Writing sectors with tags is not supported.";
|
|
return false;
|
|
}
|
|
|
|
public bool SetTracks(List<Track> tracks)
|
|
{
|
|
ErrorMessage = "Unsupported feature";
|
|
return false;
|
|
}
|
|
|
|
public bool Close()
|
|
{
|
|
if(!IsWriting)
|
|
{
|
|
ErrorMessage = "Image is not opened for writing";
|
|
return false;
|
|
}
|
|
|
|
if(!string.IsNullOrEmpty(imageInfo.Comments))
|
|
vHdr.comments = imageInfo.Comments.Length > 255
|
|
? imageInfo.Comments.Substring(0, 255)
|
|
: imageInfo.Comments;
|
|
|
|
if(vHdr.cylinders == 0)
|
|
{
|
|
vHdr.cylinders = (uint)(imageInfo.Sectors / 16 / 63);
|
|
vHdr.heads = 16;
|
|
vHdr.spt = 63;
|
|
|
|
while(vHdr.cylinders == 0)
|
|
{
|
|
vHdr.heads--;
|
|
|
|
if(vHdr.heads == 0)
|
|
{
|
|
vHdr.spt--;
|
|
vHdr.heads = 16;
|
|
}
|
|
|
|
vHdr.cylinders = (uint)(imageInfo.Sectors / vHdr.heads / vHdr.spt);
|
|
|
|
if(vHdr.cylinders == 0 && vHdr.heads == 0 && vHdr.spt == 0) break;
|
|
}
|
|
}
|
|
|
|
byte[] hdr = new byte[Marshal.SizeOf(typeof(VdiHeader))];
|
|
IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(VdiHeader)));
|
|
Marshal.StructureToPtr(vHdr, hdrPtr, true);
|
|
Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
|
|
Marshal.FreeHGlobal(hdrPtr);
|
|
|
|
writingStream.Seek(0, SeekOrigin.Begin);
|
|
writingStream.Write(hdr, 0, hdr.Length);
|
|
|
|
writingStream.Seek(vHdr.offsetBlocks, SeekOrigin.Begin);
|
|
for(long i = 0; i < ibm.LongLength; i++) writingStream.Write(BitConverter.GetBytes(ibm[i]), 0, 4);
|
|
|
|
writingStream.Flush();
|
|
writingStream.Close();
|
|
|
|
IsWriting = false;
|
|
ErrorMessage = "";
|
|
return true;
|
|
}
|
|
|
|
public bool SetMetadata(ImageInfo metadata)
|
|
{
|
|
imageInfo.Comments = metadata.Comments;
|
|
return true;
|
|
}
|
|
|
|
public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack)
|
|
{
|
|
vHdr.cylinders = cylinders;
|
|
vHdr.heads = heads;
|
|
vHdr.spt = sectorsPerTrack;
|
|
return true;
|
|
}
|
|
|
|
public bool WriteSectorTag(byte[] data, ulong sectorAddress, SectorTagType tag)
|
|
{
|
|
ErrorMessage = "Writing sectors with tags is not supported.";
|
|
return false;
|
|
}
|
|
|
|
public bool WriteSectorsTag(byte[] data, ulong sectorAddress, uint length, SectorTagType tag)
|
|
{
|
|
ErrorMessage = "Writing sectors with tags is not supported.";
|
|
return false;
|
|
}
|
|
|
|
public bool SetDumpHardware(List<DumpHardwareType> dumpHardware)
|
|
{
|
|
// Not supported
|
|
return false;
|
|
}
|
|
|
|
public bool SetCicmMetadata(CICMMetadataType metadata)
|
|
{
|
|
// Not supported
|
|
return false;
|
|
}
|
|
}
|
|
} |