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https://github.com/aaru-dps/Aaru.git
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267 lines
11 KiB
C#
267 lines
11 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : Verify.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 'verify' 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 © 2011-2018 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 DiscImageChef.Console;
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using DiscImageChef.Core;
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using DiscImageChef.DiscImages;
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using DiscImageChef.Filters;
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namespace DiscImageChef.Commands
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{
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static class Verify
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{
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internal static void DoVerify(VerifyOptions options)
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{
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DicConsole.DebugWriteLine("Verify command", "--debug={0}", options.Debug);
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DicConsole.DebugWriteLine("Verify command", "--verbose={0}", options.Verbose);
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DicConsole.DebugWriteLine("Verify command", "--input={0}", options.InputFile);
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DicConsole.DebugWriteLine("Verify command", "--verify-disc={0}", options.VerifyDisc);
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DicConsole.DebugWriteLine("Verify command", "--verify-sectors={0}", options.VerifySectors);
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FiltersList filtersList = new FiltersList();
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IFilter inputFilter = filtersList.GetFilter(options.InputFile);
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if(inputFilter == null)
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{
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DicConsole.ErrorWriteLine("Cannot open specified file.");
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return;
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}
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IMediaImage inputFormat = ImageFormat.Detect(inputFilter);
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if(inputFormat == null)
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{
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DicConsole.ErrorWriteLine("Unable to recognize image format, not verifying");
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return;
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}
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inputFormat.Open(inputFilter);
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Core.Statistics.AddMediaFormat(inputFormat.Format);
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Core.Statistics.AddMedia(inputFormat.Info.MediaType, false);
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Core.Statistics.AddFilter(inputFilter.Name);
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bool? correctDisc = null;
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long totalSectors = 0;
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long errorSectors = 0;
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long correctSectors = 0;
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long unknownSectors = 0;
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if(options.VerifyDisc)
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{
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DateTime startCheck = DateTime.UtcNow;
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bool? discCheckStatus = inputFormat.VerifyMediaImage();
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DateTime endCheck = DateTime.UtcNow;
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TimeSpan checkTime = endCheck - startCheck;
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switch(discCheckStatus)
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{
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case true:
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DicConsole.WriteLine("Disc image checksums are correct");
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break;
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case false:
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DicConsole.WriteLine("Disc image checksums are incorrect");
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break;
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case null:
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DicConsole.WriteLine("Disc image does not contain checksums");
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break;
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}
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correctDisc = discCheckStatus;
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DicConsole.VerboseWriteLine("Checking disc image checksums took {0} seconds", checkTime.TotalSeconds);
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}
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if(options.VerifySectors)
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{
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bool formatHasTracks;
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try
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{
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List<Track> inputTracks = inputFormat.Tracks;
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formatHasTracks = inputTracks.Count > 0;
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}
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catch { formatHasTracks = false; }
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DateTime startCheck;
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DateTime endCheck;
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List<ulong> failingLbas = new List<ulong>();
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List<ulong> unknownLbas = new List<ulong>();
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bool? checkStatus = null;
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if(formatHasTracks)
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{
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List<Track> inputTracks = inputFormat.Tracks;
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ulong currentSectorAll = 0;
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startCheck = DateTime.UtcNow;
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foreach(Track currentTrack in inputTracks)
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{
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ulong remainingSectors = currentTrack.TrackEndSector - currentTrack.TrackStartSector;
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ulong currentSector = 0;
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while(remainingSectors > 0)
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{
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DicConsole.Write("\rChecking sector {0} of {1}, on track {2}", currentSectorAll,
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inputFormat.Info.Sectors, currentTrack.TrackSequence);
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List<ulong> tempfailingLbas;
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List<ulong> tempunknownLbas;
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bool? tempStatus;
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if(remainingSectors < 512)
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tempStatus = inputFormat.VerifySectors(currentSector, (uint)remainingSectors,
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currentTrack.TrackSequence, out tempfailingLbas,
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out tempunknownLbas);
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else
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tempStatus = inputFormat.VerifySectors(currentSector, 512, currentTrack.TrackSequence,
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out tempfailingLbas, out tempunknownLbas);
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if(checkStatus == null || tempStatus == null) checkStatus = null;
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else if(checkStatus == false || tempStatus == false) checkStatus = false;
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else if(checkStatus == true && tempStatus == true) checkStatus = true;
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else checkStatus = null;
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failingLbas.AddRange(tempfailingLbas);
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unknownLbas.AddRange(tempunknownLbas);
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if(remainingSectors < 512)
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{
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currentSector += remainingSectors;
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currentSectorAll += remainingSectors;
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remainingSectors = 0;
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}
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else
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{
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currentSector += 512;
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currentSectorAll += 512;
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remainingSectors -= 512;
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}
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}
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}
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endCheck = DateTime.UtcNow;
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}
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else
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{
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ulong remainingSectors = inputFormat.Info.Sectors;
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ulong currentSector = 0;
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startCheck = DateTime.UtcNow;
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while(remainingSectors > 0)
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{
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DicConsole.Write("\rChecking sector {0} of {1}", currentSector, inputFormat.Info.Sectors);
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List<ulong> tempfailingLbas;
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List<ulong> tempunknownLbas;
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bool? tempStatus;
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if(remainingSectors < 512)
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tempStatus = inputFormat.VerifySectors(currentSector, (uint)remainingSectors,
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out tempfailingLbas, out tempunknownLbas);
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else
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tempStatus =
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inputFormat.VerifySectors(currentSector, 512, out tempfailingLbas, out tempunknownLbas);
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if(checkStatus == null || tempStatus == null) checkStatus = null;
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else if(checkStatus == false || tempStatus == false) checkStatus = false;
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else if(checkStatus == true && tempStatus == true) checkStatus = true;
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else checkStatus = null;
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failingLbas.AddRange(tempfailingLbas);
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unknownLbas.AddRange(tempunknownLbas);
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if(remainingSectors < 512)
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{
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currentSector += remainingSectors;
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remainingSectors = 0;
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}
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else
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{
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currentSector += 512;
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remainingSectors -= 512;
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}
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}
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endCheck = DateTime.UtcNow;
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}
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TimeSpan checkTime = endCheck - startCheck;
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DicConsole.Write("\r");
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switch(checkStatus)
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{
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case true:
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DicConsole.WriteLine("All sector checksums are correct");
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break;
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case false:
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DicConsole.WriteLine("There is at least one sector with incorrect checksum or errors");
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break;
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case null:
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DicConsole.WriteLine("There is at least one sector that does not contain a checksum");
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break;
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}
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DicConsole.VerboseWriteLine("Checking sector checksums took {0} seconds", checkTime.TotalSeconds);
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if(options.Verbose)
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{
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DicConsole.VerboseWriteLine("LBAs with error:");
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if(failingLbas.Count == (int)inputFormat.Info.Sectors)
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DicConsole.VerboseWriteLine("\tall sectors.");
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else foreach(ulong t in failingLbas) DicConsole.VerboseWriteLine("\t{0}", t);
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DicConsole.WriteLine("LBAs without checksum:");
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if(unknownLbas.Count == (int)inputFormat.Info.Sectors)
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DicConsole.VerboseWriteLine("\tall sectors.");
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else foreach(ulong t in unknownLbas) DicConsole.VerboseWriteLine("\t{0}", t);
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}
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DicConsole.WriteLine("Total sectors........... {0}", inputFormat.Info.Sectors);
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DicConsole.WriteLine("Total errors............ {0}", failingLbas.Count);
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DicConsole.WriteLine("Total unknowns.......... {0}", unknownLbas.Count);
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DicConsole.WriteLine("Total errors+unknowns... {0}", failingLbas.Count + unknownLbas.Count);
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totalSectors = (long)inputFormat.Info.Sectors;
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errorSectors = failingLbas.Count;
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unknownSectors = unknownLbas.Count;
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correctSectors = totalSectors - errorSectors - unknownSectors;
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}
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Core.Statistics.AddCommand("verify");
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Core.Statistics.AddVerify(correctDisc, correctSectors, errorSectors, unknownSectors, totalSectors);
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}
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}
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} |