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385 lines
14 KiB
C#
385 lines
14 KiB
C#
// /***************************************************************************
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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 Apple DiskCopy 4.2 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 © 2011-2019 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 Claunia.Encoding;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Structs;
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using Schemas;
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namespace DiscImageChef.DiscImages
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{
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public partial class DiskCopy42
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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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header = new Dc42Header();
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bool tags = false;
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bool macosx = false;
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if(options != null && options.TryGetValue("macosx", out string tmpOption))
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bool.TryParse(tmpOption, out macosx);
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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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switch(mediaType)
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{
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case MediaType.AppleFileWare:
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header.FmtByte = kSigmaFmtByteTwiggy;
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header.Format = kSigmaFormatTwiggy;
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twiggy = true;
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// TODO
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ErrorMessage = "Twiggy write support not yet implemented";
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return false;
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case MediaType.AppleHD20:
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if(sectors != 39040)
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{
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ErrorMessage = "Incorrect number of sectors for Apple HD20 image";
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return false;
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}
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header.FmtByte = kFmtNotStandard;
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header.Format = kNotStandardFormat;
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tags = true;
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break;
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case MediaType.AppleProfile:
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if(sectors != 9728 && sectors != 19456)
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{
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ErrorMessage = "Incorrect number of sectors for Apple Profile image";
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return false;
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}
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header.FmtByte = kFmtNotStandard;
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header.Format = kNotStandardFormat;
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tags = true;
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break;
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case MediaType.AppleSonyDS:
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if(sectors != 1600)
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{
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ErrorMessage = "Incorrect number of sectors for Apple MF2DD image";
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return false;
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}
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header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte800K;
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header.Format = kSonyFormat800K;
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tags = true;
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break;
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case MediaType.AppleSonySS:
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if(sectors != 800)
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{
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ErrorMessage = "Incorrect number of sectors for Apple MF1DD image";
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return false;
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}
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header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte400K;
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header.Format = kSonyFormat400K;
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tags = true;
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break;
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case MediaType.AppleWidget:
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if(sectors != 39040)
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{
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ErrorMessage = "Incorrect number of sectors for Apple Widget image";
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return false;
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}
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header.FmtByte = kFmtNotStandard;
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header.Format = kNotStandardFormat;
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tags = true;
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break;
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case MediaType.DOS_35_DS_DD_9:
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if(sectors != 1440)
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{
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ErrorMessage = "Incorrect number of sectors for MF2DD image";
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return false;
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}
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header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte720K;
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header.Format = kSonyFormat720K;
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break;
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case MediaType.DOS_35_HD:
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if(sectors != 2880)
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{
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ErrorMessage = "Incorrect number of sectors for MF2HD image";
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return false;
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}
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header.Format = kSonyFmtByte1440K;
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header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte1440K;
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break;
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case MediaType.DMF:
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if(sectors != 3360)
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{
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ErrorMessage = "Incorrect number of sectors for DMF image";
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return false;
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}
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header.FmtByte = macosx ? kMacOSXFmtByte : kSonyFmtByte1680K;
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header.Format = kSonyFormat1680K;
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break;
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default:
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ErrorMessage = $"Unsupport media format {mediaType}";
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return false;
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}
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dataOffset = 0x54;
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tagOffset = header.TagSize != 0 ? 0x54 + header.DataSize : 0;
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header.DiskName = "-DiscImageChef converted image-";
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header.Valid = 1;
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header.DataSize = (uint)(sectors * 512);
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if(tags) header.TagSize = (uint)(sectors * 12);
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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 = "Unsupported feature";
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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)(dataOffset + 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 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)(dataOffset + 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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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(header.TagSize == 0)
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{
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ErrorMessage = "Image does not support tags";
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return false;
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}
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if(data.Length != 524)
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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)(dataOffset + sectorAddress * 512), SeekOrigin.Begin);
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writingStream.Write(data, 0, 512);
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writingStream.Seek((long)(tagOffset + sectorAddress * 12), SeekOrigin.Begin);
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writingStream.Write(data, 512, 12);
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ErrorMessage = "";
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return true;
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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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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(header.TagSize == 0)
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{
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ErrorMessage = "Image does not support tags";
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return false;
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}
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if(data.Length % 524 != 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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for(uint i = 0; i < length; i++)
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{
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writingStream.Seek((long)(dataOffset + (sectorAddress + i) * 512), SeekOrigin.Begin);
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writingStream.Write(data, (int)(i * 524 + 0), 512);
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writingStream.Seek((long)(tagOffset + (sectorAddress + i) * 12),
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SeekOrigin.Begin);
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writingStream.Write(data, (int)(i * 524 + 512),
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12);
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}
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ErrorMessage = "";
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return true;
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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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// No tags where written
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if(writingStream.Length == 0x54 + header.DataSize) header.TagSize = 0;
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writingStream.Seek(0x54, SeekOrigin.Begin);
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byte[] data = new byte[header.DataSize];
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writingStream.Read(data, 0, (int)header.DataSize);
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header.DataChecksum = DC42CheckSum(data);
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writingStream.Seek(0x54 + header.DataSize, SeekOrigin.Begin);
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data = new byte[header.TagSize];
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writingStream.Read(data, 0, (int)header.TagSize);
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header.TagChecksum = DC42CheckSum(data);
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writingStream.Seek(0, SeekOrigin.Begin);
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if(header.DiskName.Length > 63) header.DiskName = header.DiskName.Substring(0, 63);
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writingStream.WriteByte((byte)header.DiskName.Length);
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Encoding macRoman = new MacRoman();
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writingStream.Write(macRoman.GetBytes(header.DiskName), 0, header.DiskName.Length);
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writingStream.Seek(64, SeekOrigin.Begin);
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writingStream.Write(BigEndianBitConverter.GetBytes(header.DataSize), 0, 4);
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writingStream.Write(BigEndianBitConverter.GetBytes(header.TagSize), 0, 4);
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writingStream.Write(BigEndianBitConverter.GetBytes(header.DataChecksum), 0, 4);
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writingStream.Write(BigEndianBitConverter.GetBytes(header.TagChecksum), 0, 4);
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writingStream.WriteByte(header.Format);
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writingStream.WriteByte(header.FmtByte);
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writingStream.WriteByte(1);
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writingStream.WriteByte(0);
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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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header.DiskName = metadata.MediaTitle ?? "-DiscImageChef converted image-";
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return true;
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}
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public bool SetGeometry(uint cylinders, uint heads, uint sectorsPerTrack) => true;
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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) => false;
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public bool SetCicmMetadata(CICMMetadataType metadata) => false;
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}
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} |