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59 lines
2.2 KiB
C#
59 lines
2.2 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Identify.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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// Identifies Anex86 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 © 2011-2021 Natalia Portillo
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// ****************************************************************************/
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using System.IO;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Helpers;
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namespace Aaru.DiscImages
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{
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public sealed partial class SaveDskF
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{
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public bool Identify(IFilter imageFilter)
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{
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Stream stream = imageFilter.GetDataForkStream();
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stream.Seek(0, SeekOrigin.Begin);
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if(stream.Length < 41)
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return false;
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byte[] hdr = new byte[40];
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stream.Read(hdr, 0, 40);
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_header = Marshal.ByteArrayToStructureLittleEndian<Header>(hdr);
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return (_header.magic == SDF_MAGIC || _header.magic == SDF_MAGIC_COMPRESSED ||
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_header.magic == SDF_MAGIC_OLD) && _header.fatCopies <= 2 && _header.padding == 0 &&
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_header.commentOffset < stream.Length && _header.dataOffset < stream.Length;
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}
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}
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} |