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367 lines
15 KiB
C#
367 lines
15 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Compare.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Verbs.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Implements the 'compare' verb.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2020 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.CommandLine;
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using System.CommandLine.Invocation;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.CommonTypes.Enums;
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using DiscImageChef.CommonTypes.Interfaces;
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using DiscImageChef.CommonTypes.Structs;
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using DiscImageChef.Console;
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using DiscImageChef.Core;
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using ImageInfo = DiscImageChef.CommonTypes.Structs.ImageInfo;
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namespace DiscImageChef.Commands.Image
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{
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internal class CompareCommand : Command
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{
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public CompareCommand() : base("compare", "Compares two disc images.")
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{
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AddAlias("cmp");
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AddArgument(new Argument<string>
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{
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Arity = ArgumentArity.ExactlyOne, Description = "First media image path", Name = "image-path1"
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});
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AddArgument(new Argument<string>
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{
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Arity = ArgumentArity.ExactlyOne, Description = "Second media image path", Name = "image-path2"
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});
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Handler = CommandHandler.Create(GetType().GetMethod(nameof(Invoke)));
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}
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public static int Invoke(bool debug, bool verbose, string imagePath1, string imagePath2)
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{
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MainClass.PrintCopyright();
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if(debug)
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DicConsole.DebugWriteLineEvent += System.Console.Error.WriteLine;
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if(verbose)
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DicConsole.VerboseWriteLineEvent += System.Console.WriteLine;
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Statistics.AddCommand("compare");
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DicConsole.DebugWriteLine("Compare command", "--debug={0}", debug);
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DicConsole.DebugWriteLine("Compare command", "--input1={0}", imagePath1);
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DicConsole.DebugWriteLine("Compare command", "--input2={0}", imagePath2);
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DicConsole.DebugWriteLine("Compare command", "--verbose={0}", verbose);
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var filtersList = new FiltersList();
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IFilter inputFilter1 = filtersList.GetFilter(imagePath1);
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filtersList = new FiltersList();
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IFilter inputFilter2 = filtersList.GetFilter(imagePath2);
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if(inputFilter1 == null)
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{
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DicConsole.ErrorWriteLine("Cannot open input file 1");
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return(int)ErrorNumber.CannotOpenFile;
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}
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if(inputFilter2 == null)
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{
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DicConsole.ErrorWriteLine("Cannot open input file 2");
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return(int)ErrorNumber.CannotOpenFile;
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}
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IMediaImage input1Format = ImageFormat.Detect(inputFilter1);
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IMediaImage input2Format = ImageFormat.Detect(inputFilter2);
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if(input1Format == null)
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{
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DicConsole.ErrorWriteLine("Input file 1 format not identified, not proceeding with comparison.");
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return(int)ErrorNumber.UnrecognizedFormat;
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}
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if(verbose)
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DicConsole.VerboseWriteLine("Input file 1 format identified by {0} ({1}).", input1Format.Name,
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input1Format.Id);
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else
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DicConsole.WriteLine("Input file 1 format identified by {0}.", input1Format.Name);
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if(input2Format == null)
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{
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DicConsole.ErrorWriteLine("Input file 2 format not identified, not proceeding with comparison.");
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return(int)ErrorNumber.UnrecognizedFormat;
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}
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if(verbose)
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DicConsole.VerboseWriteLine("Input file 2 format identified by {0} ({1}).", input2Format.Name,
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input2Format.Id);
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else
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DicConsole.WriteLine("Input file 2 format identified by {0}.", input2Format.Name);
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input1Format.Open(inputFilter1);
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input2Format.Open(inputFilter2);
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Statistics.AddMediaFormat(input1Format.Format);
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Statistics.AddMediaFormat(input2Format.Format);
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Statistics.AddMedia(input1Format.Info.MediaType, false);
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Statistics.AddMedia(input2Format.Info.MediaType, false);
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Statistics.AddFilter(inputFilter1.Name);
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Statistics.AddFilter(inputFilter2.Name);
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var sb = new StringBuilder();
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if(verbose)
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{
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sb.AppendLine("\tDisc image 1\tDisc image 2");
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sb.AppendLine("================================");
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sb.AppendFormat("File\t{0}\t{1}", imagePath1, imagePath2).AppendLine();
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sb.AppendFormat("Disc image format\t{0}\t{1}", input1Format.Name, input2Format.Name).AppendLine();
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}
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else
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{
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sb.AppendFormat("Disc image 1: {0}", imagePath1).AppendLine();
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sb.AppendFormat("Disc image 2: {0}", imagePath2).AppendLine();
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}
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bool imagesDiffer = false;
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ImageInfo image1Info = input1Format.Info;
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ImageInfo image2Info = input2Format.Info;
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List<Session> image1Sessions = new List<Session>();
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List<Session> image2Sessions = new List<Session>();
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Dictionary<MediaTagType, byte[]> image1DiskTags = new Dictionary<MediaTagType, byte[]>();
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Dictionary<MediaTagType, byte[]> image2DiskTags = new Dictionary<MediaTagType, byte[]>();
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foreach(MediaTagType disktag in Enum.GetValues(typeof(MediaTagType)))
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{
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try
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{
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byte[] temparray = input1Format.ReadDiskTag(disktag);
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image1DiskTags.Add(disktag, temparray);
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}
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#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
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catch
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{
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// ignored
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}
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#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
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}
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foreach(MediaTagType disktag in Enum.GetValues(typeof(MediaTagType)))
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{
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try
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{
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byte[] temparray = input2Format.ReadDiskTag(disktag);
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image2DiskTags.Add(disktag, temparray);
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}
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#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
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catch
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{
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// ignored
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}
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#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
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}
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if(verbose)
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{
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sb.AppendFormat("Has partitions?\t{0}\t{1}", image1Info.HasPartitions, image2Info.HasPartitions).
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AppendLine();
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sb.AppendFormat("Has sessions?\t{0}\t{1}", image1Info.HasSessions, image2Info.HasSessions).AppendLine();
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sb.AppendFormat("Image size\t{0}\t{1}", image1Info.ImageSize, image2Info.ImageSize).AppendLine();
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sb.AppendFormat("Sectors\t{0}\t{1}", image1Info.Sectors, image2Info.Sectors).AppendLine();
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sb.AppendFormat("Sector size\t{0}\t{1}", image1Info.SectorSize, image2Info.SectorSize).AppendLine();
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sb.AppendFormat("Creation time\t{0}\t{1}", image1Info.CreationTime, image2Info.CreationTime).
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AppendLine();
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sb.AppendFormat("Last modification time\t{0}\t{1}", image1Info.LastModificationTime,
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image2Info.LastModificationTime).AppendLine();
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sb.AppendFormat("Disk type\t{0}\t{1}", image1Info.MediaType, image2Info.MediaType).AppendLine();
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sb.AppendFormat("Image version\t{0}\t{1}", image1Info.Version, image2Info.Version).AppendLine();
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sb.AppendFormat("Image application\t{0}\t{1}", image1Info.Application, image2Info.Application).
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AppendLine();
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sb.AppendFormat("Image application version\t{0}\t{1}", image1Info.ApplicationVersion,
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image2Info.ApplicationVersion).AppendLine();
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sb.AppendFormat("Image creator\t{0}\t{1}", image1Info.Creator, image2Info.Creator).AppendLine();
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sb.AppendFormat("Image name\t{0}\t{1}", image1Info.MediaTitle, image2Info.MediaTitle).AppendLine();
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sb.AppendFormat("Image comments\t{0}\t{1}", image1Info.Comments, image2Info.Comments).AppendLine();
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sb.AppendFormat("Disk manufacturer\t{0}\t{1}", image1Info.MediaManufacturer,
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image2Info.MediaManufacturer).AppendLine();
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sb.AppendFormat("Disk model\t{0}\t{1}", image1Info.MediaModel, image2Info.MediaModel).AppendLine();
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sb.AppendFormat("Disk serial number\t{0}\t{1}", image1Info.MediaSerialNumber,
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image2Info.MediaSerialNumber).AppendLine();
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sb.AppendFormat("Disk barcode\t{0}\t{1}", image1Info.MediaBarcode, image2Info.MediaBarcode).
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AppendLine();
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sb.AppendFormat("Disk part no.\t{0}\t{1}", image1Info.MediaPartNumber, image2Info.MediaPartNumber).
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AppendLine();
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sb.AppendFormat("Disk sequence\t{0}\t{1}", image1Info.MediaSequence, image2Info.MediaSequence).
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AppendLine();
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sb.AppendFormat("Last disk on sequence\t{0}\t{1}", image1Info.LastMediaSequence,
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image2Info.LastMediaSequence).AppendLine();
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sb.AppendFormat("Drive manufacturer\t{0}\t{1}", image1Info.DriveManufacturer,
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image2Info.DriveManufacturer).AppendLine();
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sb.AppendFormat("Drive firmware revision\t{0}\t{1}", image1Info.DriveFirmwareRevision,
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image2Info.DriveFirmwareRevision).AppendLine();
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sb.AppendFormat("Drive model\t{0}\t{1}", image1Info.DriveModel, image2Info.DriveModel).AppendLine();
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sb.AppendFormat("Drive serial number\t{0}\t{1}", image1Info.DriveSerialNumber,
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image2Info.DriveSerialNumber).AppendLine();
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foreach(MediaTagType disktag in Enum.GetValues(typeof(MediaTagType)))
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sb.AppendFormat("Has {0}?\t{1}\t{2}", disktag, image1DiskTags.ContainsKey(disktag),
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image2DiskTags.ContainsKey(disktag)).AppendLine();
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}
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DicConsole.WriteLine("Comparing disk image characteristics");
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if(image1Info.HasPartitions != image2Info.HasPartitions)
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{
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imagesDiffer = true;
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if(!verbose)
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sb.AppendLine("Image partitioned status differ");
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}
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if(image1Info.HasSessions != image2Info.HasSessions)
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{
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imagesDiffer = true;
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if(!verbose)
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sb.AppendLine("Image session status differ");
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}
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if(image1Info.Sectors != image2Info.Sectors)
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{
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imagesDiffer = true;
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if(!verbose)
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sb.AppendLine("Image sectors differ");
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}
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if(image1Info.SectorSize != image2Info.SectorSize)
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{
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imagesDiffer = true;
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if(!verbose)
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sb.AppendLine("Image sector size differ");
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}
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if(image1Info.MediaType != image2Info.MediaType)
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{
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imagesDiffer = true;
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if(!verbose)
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sb.AppendLine("Disk type differ");
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}
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ulong leastSectors;
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if(image1Info.Sectors < image2Info.Sectors)
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{
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imagesDiffer = true;
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leastSectors = image1Info.Sectors;
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if(!verbose)
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sb.AppendLine("Image 2 has more sectors");
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}
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else if(image1Info.Sectors > image2Info.Sectors)
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{
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imagesDiffer = true;
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leastSectors = image2Info.Sectors;
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if(!verbose)
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sb.AppendLine("Image 1 has more sectors");
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}
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else
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leastSectors = image1Info.Sectors;
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DicConsole.WriteLine("Comparing sectors...");
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for(ulong sector = 0; sector < leastSectors; sector++)
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{
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DicConsole.Write("\rComparing sector {0} of {1}...", sector + 1, leastSectors);
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try
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{
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byte[] image1Sector = input1Format.ReadSector(sector);
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byte[] image2Sector = input2Format.ReadSector(sector);
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ArrayHelpers.CompareBytes(out bool different, out bool sameSize, image1Sector, image2Sector);
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if(different)
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{
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imagesDiffer = true;
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sb.AppendFormat("Sector {0} is different", sector).AppendLine();
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}
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else if(!sameSize)
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{
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imagesDiffer = true;
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sb.
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AppendFormat("Sector {0} has different sizes ({1} bytes in image 1, {2} in image 2) but are otherwise identical",
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sector, image1Sector.LongLength, image2Sector.LongLength).AppendLine();
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}
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}
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#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
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catch
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{
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// ignored
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}
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#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
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}
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DicConsole.WriteLine();
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sb.AppendLine(imagesDiffer ? "Images differ" : "Images do not differ");
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DicConsole.WriteLine(sb.ToString());
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return(int)ErrorNumber.NoError;
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}
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}
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} |