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125 lines
4.0 KiB
C#
125 lines
4.0 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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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 : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Verifies cdrdao cuesheets (toc/bin).
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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 © 2011-2025 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 Aaru.Checksums;
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using Aaru.CommonTypes.Enums;
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namespace Aaru.Images;
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public sealed partial class Cdrdao
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{
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#region IWritableOpticalImage Members
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/// <inheritdoc />
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public bool? VerifySector(ulong sectorAddress)
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{
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ErrorNumber errno = ReadSectorLong(sectorAddress, false, out byte[] buffer, out _);
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return errno != ErrorNumber.NoError ? null : CdChecksums.CheckCdSector(buffer);
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}
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/// <inheritdoc />
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public bool? VerifySectors(ulong sectorAddress, uint length, out List<ulong> failingLbas,
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out List<ulong> unknownLbas)
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{
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failingLbas = [];
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unknownLbas = [];
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ErrorNumber errno = ReadSectorsLong(sectorAddress, false, length, out byte[] buffer, out _);
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if(errno != ErrorNumber.NoError) return null;
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var bps = (int)(buffer.Length / length);
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var sector = new byte[bps];
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for(var i = 0; i < length; i++)
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{
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Array.Copy(buffer, i * bps, sector, 0, bps);
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bool? sectorStatus = CdChecksums.CheckCdSector(sector);
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switch(sectorStatus)
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{
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case null:
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unknownLbas.Add((ulong)i + sectorAddress);
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break;
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case false:
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failingLbas.Add((ulong)i + sectorAddress);
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break;
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}
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}
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if(unknownLbas.Count > 0) return null;
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return failingLbas.Count <= 0;
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}
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/// <inheritdoc />
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public bool? VerifySectors(ulong sectorAddress, uint length, uint track, out List<ulong> failingLbas,
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out List<ulong> unknownLbas)
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{
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failingLbas = [];
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unknownLbas = [];
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ErrorNumber errno = ReadSectorsLong(sectorAddress, length, track, out byte[] buffer, out _);
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if(errno != ErrorNumber.NoError) return null;
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var bps = (int)(buffer.Length / length);
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var sector = new byte[bps];
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for(var i = 0; i < length; i++)
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{
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Array.Copy(buffer, i * bps, sector, 0, bps);
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bool? sectorStatus = CdChecksums.CheckCdSector(sector);
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switch(sectorStatus)
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{
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case null:
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unknownLbas.Add((ulong)i + sectorAddress);
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break;
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case false:
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failingLbas.Add((ulong)i + sectorAddress);
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break;
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}
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}
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if(unknownLbas.Count > 0) return null;
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return failingLbas.Count <= 0;
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}
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#endregion
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} |