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Refactor image classes and split them to smaller files.
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297
DiscImageChef.DiscImages/VHD/Write.cs
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297
DiscImageChef.DiscImages/VHD/Write.cs
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// /***************************************************************************
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// The Disc Image Chef
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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 Connectix and Microsoft Virtual PC 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 © 2011-2018 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 DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Interop;
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using DiscImageChef.CommonTypes.Structs;
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using Schemas;
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using PlatformID = DiscImageChef.CommonTypes.Interop.PlatformID;
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using Version = System.Version;
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namespace DiscImageChef.DiscImages
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{
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public partial class Vhd
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{
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public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
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uint sectorSize)
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{
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if(sectorSize != 512)
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{
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ErrorMessage = "Unsupported sector size";
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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 = $"Unsupport media format {mediaType}";
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return false;
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}
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imageInfo = new ImageInfo {MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors};
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try { writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None); }
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catch(IOException e)
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{
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ErrorMessage = $"Could not create new image file, exception {e.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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public bool WriteMediaTag(byte[] data, MediaTagType tag)
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{
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ErrorMessage = "Writing media tags is not supported.";
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return false;
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}
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public bool WriteSector(byte[] data, ulong sectorAddress)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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return false;
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}
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if(data.Length != 512)
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{
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ErrorMessage = "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 = "Tried to write past image size";
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return false;
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}
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writingStream.Seek((long)(0 + sectorAddress * 512), 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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// TODO: Implement dynamic
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public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
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{
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if(!IsWriting)
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{
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ErrorMessage = "Tried to write on a non-writable image";
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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 = "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 = "Tried to write past image size";
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return false;
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}
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writingStream.Seek((long)(0 + sectorAddress * 512), 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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public bool WriteSectorLong(byte[] data, ulong sectorAddress)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
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{
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ErrorMessage = "Writing sectors with tags is not supported.";
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return false;
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}
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public bool SetTracks(List<Track> tracks)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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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 = "Image is not opened for writing";
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return false;
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}
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Version thisVersion = GetType().Assembly.GetName().Version;
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if(imageInfo.Cylinders == 0)
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{
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imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
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imageInfo.Heads = 16;
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imageInfo.SectorsPerTrack = 63;
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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.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
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}
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}
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HardDiskFooter footer = new HardDiskFooter
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{
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Cookie = IMAGE_COOKIE,
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Features = FEATURES_RESERVED,
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Version = VERSION1,
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Timestamp =
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(uint)(DateTime.Now - new DateTime(2000, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds,
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CreatorApplication = CREATOR_DISCIMAGECHEF,
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CreatorVersion =
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(uint)(((thisVersion.Major & 0xFF) << 24) + ((thisVersion.Minor & 0xFF) << 16) +
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((thisVersion.Build & 0xFF) << 8) + (thisVersion.Revision & 0xFF)),
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CreatorHostOs = DetectOS.GetRealPlatformID() == PlatformID.MacOSX ? CREATOR_MACINTOSH : CREATOR_WINDOWS,
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DiskType = TYPE_FIXED,
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UniqueId = Guid.NewGuid(),
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DiskGeometry =
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((imageInfo.Cylinders & 0xFFFF) << 16) + ((imageInfo.Heads & 0xFF) << 8) +
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(imageInfo.SectorsPerTrack & 0xFF),
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OriginalSize = imageInfo.Sectors * 512,
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CurrentSize = imageInfo.Sectors * 512
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};
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footer.Offset = footer.DiskType == TYPE_FIXED ? ulong.MaxValue : 512;
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BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
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byte[] footerBytes = new byte[512];
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Cookie), 0, footerBytes, 0x00, 8);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Features), 0, footerBytes, 0x08, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Version), 0, footerBytes, 0x0C, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Offset), 0, footerBytes, 0x10, 8);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Timestamp), 0, footerBytes, 0x18, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.CreatorApplication), 0, footerBytes, 0x1C, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.CreatorVersion), 0, footerBytes, 0x20, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.CreatorHostOs), 0, footerBytes, 0x24, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.OriginalSize), 0, footerBytes, 0x28, 8);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.CurrentSize), 0, footerBytes, 0x30, 8);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.DiskGeometry), 0, footerBytes, 0x38, 4);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.DiskType), 0, footerBytes, 0x3C, 4);
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Array.Copy(footer.UniqueId.ToByteArray(), 0, footerBytes, 0x44, 4);
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footer.Checksum = VhdChecksum(footerBytes);
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Array.Copy(BigEndianBitConverter.GetBytes(footer.Checksum), 0, footerBytes, 0x40, 4);
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writingStream.Seek((long)(footer.DiskType == TYPE_FIXED ? footer.OriginalSize : 0), SeekOrigin.Begin);
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writingStream.Write(footerBytes, 0, 512);
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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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public bool SetMetadata(ImageInfo metadata)
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{
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return true;
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}
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public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack)
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{
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if(cylinders > 0xFFFF)
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{
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ErrorMessage = "Too many cylinders.";
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return false;
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}
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if(heads > 0xFF)
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{
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ErrorMessage = "Too many heads.";
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return false;
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}
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if(sectorsPerTrack > 0xFF)
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{
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ErrorMessage = "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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public bool WriteSectorTag(byte[] data, ulong sectorAddress, SectorTagType tag)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool WriteSectorsTag(byte[] data, ulong sectorAddress, uint length, SectorTagType tag)
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{
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ErrorMessage = "Unsupported feature";
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return false;
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}
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public bool SetDumpHardware(List<DumpHardwareType> dumpHardware)
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{
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// Not supported
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return false;
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}
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public bool SetCicmMetadata(CICMMetadataType metadata)
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{
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// Not supported
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return false;
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}
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}
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}
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