Aaru.Decoders/SCSI/Modes/30_Apple.cs

// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename       : 30_Apple.cs
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// Component      : Device structures decoders.
//
// --[ Description ] ----------------------------------------------------------
//
//     Decodes Apple MODE PAGE 30h: Apple OEM String.
//
// --[ License ] --------------------------------------------------------------
//
//     This library is free software; you can redistribute it and/or modify
//     it under the terms of the GNU Lesser General Public License as
//     published by the Free Software Foundation; either version 2.1 of the
//     License, or (at your option) any later version.
//
//     This library is distributed in the hope that it will be useful, but
//     WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//     Lesser General Public License for more details.
//
//     You should have received a copy of the GNU Lesser General Public
//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2020 Natalia Portillo
// ****************************************************************************/

using System;
using System.Diagnostics.CodeAnalysis;
using System.Linq;

namespace DiscImageChef.Decoders.SCSI
{
    [SuppressMessage("ReSharper", "InconsistentNaming"), SuppressMessage("ReSharper", "MemberCanBeInternal"),
     SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
    public static partial class Modes
    {
        #region Apple Mode Page 0x30: Apple OEM String
        static readonly byte[] AppleOEMString =
        {
            0x41, 0x50, 0x50, 0x4C, 0x45, 0x20, 0x43, 0x4F, 0x4D, 0x50, 0x55, 0x54, 0x45, 0x52, 0x2C, 0x20, 0x49, 0x4E,
            0x43, 0x2E
        };

        public static bool IsAppleModePage_30(byte[] pageResponse)
        {
            if((pageResponse?[0] & 0x40) == 0x40)
                return false;

            if((pageResponse?[0] & 0x3F) != 0x30)
                return false;

            if(pageResponse[1] + 2 != pageResponse.Length)
                return false;

            if(pageResponse.Length != 30)
                return false;

            byte[] str = new byte[20];
            Array.Copy(pageResponse, 10, str, 0, 20);

            return AppleOEMString.SequenceEqual(str);
        }
        #endregion Apple Mode Page 0x30: Apple OEM String
    }
}