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https://github.com/aaru-dps/Aaru.git
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466 lines
19 KiB
C#
466 lines
19 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : SS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Device structures decoders.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Decodes Xbox security sectors
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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 © 2011-2019 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Text;
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using DiscImageChef.Decoders.DVD;
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namespace DiscImageChef.Decoders.Xbox
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{
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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[SuppressMessage("ReSharper", "MemberCanBeInternal")]
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[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
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[SuppressMessage("ReSharper", "NotAccessedField.Global")]
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public static class SS
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{
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public struct SecuritySector
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{
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/// <summary>
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/// Byte 0, bits 7 to 4
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/// Disk category field
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/// </summary>
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public DiskCategory DiskCategory;
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/// <summary>
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/// Byte 0, bits 3 to 0
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/// Media version
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/// </summary>
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public byte PartVersion;
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/// <summary>
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/// Byte 1, bits 7 to 4
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/// 120mm if 0, 80mm if 1. If UMD (60mm) 0 also. Reserved rest of values
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/// </summary>
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public DVDSize DiscSize;
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/// <summary>
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/// Byte 1, bits 3 to 0
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/// Maximum data rate
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/// </summary>
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public MaximumRateField MaximumRate;
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/// <summary>
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/// Byte 2, bit 7
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/// Reserved
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/// </summary>
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public bool Reserved3;
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/// <summary>
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/// Byte 2, bits 6 to 5
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/// Number of layers
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/// </summary>
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public byte Layers;
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/// <summary>
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/// Byte 2, bit 4
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/// Track path
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/// </summary>
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public bool TrackPath;
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/// <summary>
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/// Byte 2, bits 3 to 0
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/// Layer type
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/// </summary>
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public LayerTypeFieldMask LayerType;
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/// <summary>
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/// Byte 3, bits 7 to 4
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/// Linear density field
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/// </summary>
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public LinearDensityField LinearDensity;
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/// <summary>
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/// Byte 3, bits 3 to 0
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/// Track density field
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/// </summary>
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public TrackDensityField TrackDensity;
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/// <summary>
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/// Bytes 4 to 7
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/// PSN where Data Area starts
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/// </summary>
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public uint DataAreaStartPSN;
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/// <summary>
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/// Bytes 8 to 11
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/// PSN where Data Area ends
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/// </summary>
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public uint DataAreaEndPSN;
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/// <summary>
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/// Bytes 12 to 15
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/// PSN where Data Area ends in Layer 0
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/// </summary>
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public uint Layer0EndPSN;
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/// <summary>
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/// Byte 27
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/// Always 0x06 on XGD3
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/// </summary>
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public byte Unknown1;
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/// <summary>
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/// Bytes 256 to 283
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/// Unknown, XGD2 and XGD3
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/// </summary>
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public byte[] Unknown2;
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/// <summary>
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/// Bytes 284 to 719
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/// Unknown, XGD3
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/// </summary>
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public byte[] Unknown3;
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/// <summary>
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/// Bytes 720 to 723
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/// Unknown
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/// </summary>
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public byte[] Unknown4;
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/// <summary>
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/// Bytes 724 to 767
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/// Unknown, XGD3
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/// </summary>
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public byte[] Unknown5;
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/// <summary>
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/// Byte 768
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/// Version of challenge table
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/// </summary>
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public byte ChallengeTableVersion;
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/// <summary>
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/// Byte 769
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/// Number of challenge entries
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/// </summary>
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public byte NoChallengeEntries;
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/// <summary>
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/// Bytes 770 to 1022
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/// Unknown
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/// </summary>
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public ChallengeEntry[] ChallengeEntries;
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/// <summary>
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/// Byte 1023
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/// Unknown
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/// </summary>
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public byte Unknown6;
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/// <summary>
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/// Bytes 1052 to 1099
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/// Unknown, XGD1 only
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/// </summary>
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public byte[] Unknown7;
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/// <summary>
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/// Bytes 1120 to 1135
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/// Unknown, XGD2 and XGD3
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/// </summary>
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public byte[] Unknown8;
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/// <summary>
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/// Bytes 1180 to 1195
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/// Unknown
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/// </summary>
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public byte[] Unknown9;
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/// <summary>
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/// Bytes 1208 to 1511
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/// Unknown
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/// </summary>
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public byte[] Unknown10;
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/// <summary>
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/// Bytes 1528 to 1632
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/// </summary>
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public byte[] Unknown11;
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/// <summary>
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/// Bytes 1633 to 1839
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/// Security extents, 23 entries of 9 bytes
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/// </summary>
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public SecuritySectorExtent[] Extents;
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/// <summary>
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/// Bytes 1840 to 2047
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/// Copy of the security extents, 23 entries of 9 bytes
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/// </summary>
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public SecuritySectorExtent[] ExtentsCopy;
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}
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public struct SecuritySectorExtent
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{
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/// <summary>
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/// Bytes 0 to 2
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/// Unknown
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/// </summary>
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public uint Unknown;
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/// <summary>
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/// Bytes 3 to 5
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/// Start PSN of this security extent
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/// </summary>
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public uint StartPSN;
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/// <summary>
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/// Bytes 6 to 8
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/// End PSN of this security extent
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/// </summary>
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public uint EndPSN;
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}
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public struct ChallengeEntry
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{
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public byte Level;
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public byte ChallengeId;
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public uint ChallengeValue;
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public byte ResponseModifier;
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public uint ResponseValue;
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}
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public static SecuritySector? Decode(byte[] response)
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{
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if(response == null) return null;
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if(response.Length < 2048) return null;
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SecuritySector ss = new SecuritySector
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{
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DiskCategory = (DiskCategory)((response[0] & 0xF0) >> 4),
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PartVersion = (byte)(response[0] & 0x0F),
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DiscSize = (DVDSize)((response[1] & 0xF0) >> 4),
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MaximumRate = (MaximumRateField)(response[1] & 0x0F),
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Reserved3 = (response[2] & 0x80) == 0x80,
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Layers = (byte)((response[2] & 0x60) >> 5),
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TrackPath = (response[2] & 0x08) == 0x08,
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LayerType = (LayerTypeFieldMask)(response[2] & 0x07),
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LinearDensity = (LinearDensityField)((response[3] & 0xF0) >> 4),
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TrackDensity = (TrackDensityField)(response[3] & 0x0F),
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DataAreaStartPSN =
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(uint)((response[4] << 24) + (response[5] << 16) + (response[6] << 8) + response[7]),
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DataAreaEndPSN =
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(uint)((response[8] << 24) + (response[9] << 16) + (response[10] << 8) + response[11]),
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Layer0EndPSN =
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(uint)((response[12] << 24) + (response[13] << 16) + (response[14] << 8) + response[15]),
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Unknown1 = response[27],
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Unknown2 = new byte[28],
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Unknown3 = new byte[436],
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Unknown4 = new byte[4],
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Unknown5 = new byte[43],
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ChallengeTableVersion = response[768],
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NoChallengeEntries = response[769],
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ChallengeEntries = new ChallengeEntry[23],
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Unknown6 = response[1023],
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Unknown7 = new byte[48],
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Unknown8 = new byte[16],
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Unknown9 = new byte[16],
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Unknown10 = new byte[303],
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Unknown11 = new byte[104],
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Extents = new SecuritySectorExtent[23],
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ExtentsCopy = new SecuritySectorExtent[23]
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};
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Array.Copy(response, 256, ss.Unknown2, 0, 28);
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Array.Copy(response, 284, ss.Unknown3, 0, 436);
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Array.Copy(response, 720, ss.Unknown4, 0, 4);
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Array.Copy(response, 724, ss.Unknown5, 0, 43);
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for(int i = 0; i < 23; i++)
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ss.ChallengeEntries[i] = new ChallengeEntry
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{
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Level = response[770 + i * 11 + 0],
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ChallengeId = response[770 + i * 11 + 1],
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ChallengeValue =
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(uint)((response[770 + i * 11 + 2] << 24) + (response[770 + i * 11 + 3] << 16) +
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(response[770 + i * 11 + 4] << 8) + response[770 + i * 11 + 5]),
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ResponseModifier = response[770 + i * 11 + 6],
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ResponseValue = (uint)((response[770 + i * 11 + 7] << 24) + (response[770 + i * 11 + 8] << 16) +
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(response[770 + i * 11 + 9] << 8) + response[770 + i * 11 + 10])
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};
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Array.Copy(response, 1052, ss.Unknown7, 0, 48);
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Array.Copy(response, 1120, ss.Unknown8, 0, 16);
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Array.Copy(response, 1180, ss.Unknown9, 0, 16);
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Array.Copy(response, 1208, ss.Unknown10, 0, 303);
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Array.Copy(response, 1528, ss.Unknown11, 0, 104);
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for(int i = 0; i < 23; i++)
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ss.Extents[i] = new SecuritySectorExtent
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{
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Unknown =
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(uint)((response[1633 + i * 9 + 0] << 16) + (response[1633 + i * 9 + 1] << 8) +
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response[1633 + i * 9 + 2]),
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StartPSN =
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(uint)((response[1633 + i * 9 + 3] << 16) + (response[1633 + i * 9 + 4] << 8) +
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response[1633 + i * 9 + 5]),
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EndPSN = (uint)((response[1633 + i * 9 + 6] << 16) + (response[1633 + i * 9 + 7] << 8) +
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response[1633 + i * 9 + 8])
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};
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for(int i = 0; i < 23; i++)
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ss.ExtentsCopy[i] = new SecuritySectorExtent
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{
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Unknown =
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(uint)((response[1840 + i * 9 + 0] << 16) + (response[1840 + i * 9 + 1] << 8) +
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response[1840 + i * 9 + 2]),
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StartPSN =
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(uint)((response[1840 + i * 9 + 3] << 16) + (response[1840 + i * 9 + 4] << 8) +
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response[1840 + i * 9 + 5]),
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EndPSN = (uint)((response[1840 + i * 9 + 6] << 16) + (response[1840 + i * 9 + 7] << 8) +
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response[1840 + i * 9 + 8])
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};
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return ss;
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}
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public static string Prettify(SecuritySector? ss)
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{
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if(ss == null) return null;
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SecuritySector decoded = ss.Value;
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StringBuilder sb = new StringBuilder();
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string sizeString;
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switch(decoded.DiscSize)
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{
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case DVDSize.Eighty:
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sizeString = "80mm";
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break;
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case DVDSize.OneTwenty:
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sizeString = "120mm";
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break;
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default:
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sizeString = $"unknown size identifier {decoded.DiscSize}";
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break;
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}
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const string categorySentence = "Disc is a {0} {1} version {2}";
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switch(decoded.DiskCategory)
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{
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case DiskCategory.DVDPRWDL:
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sb.AppendFormat(categorySentence, sizeString, "Xbox Game Disc", decoded.PartVersion).AppendLine();
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break;
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case DiskCategory.DVDPRDL:
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sb.AppendFormat(categorySentence, sizeString, "Xbox 360 Game Disc", decoded.PartVersion)
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.AppendLine();
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break;
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default:
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sb.AppendFormat(categorySentence, sizeString, "unknown disc type", decoded.PartVersion)
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.AppendLine();
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break;
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}
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switch(decoded.MaximumRate)
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{
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case MaximumRateField.TwoMbps:
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sb.AppendLine("Disc maximum transfer rate is 2,52 Mbit/sec.");
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break;
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case MaximumRateField.FiveMbps:
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sb.AppendLine("Disc maximum transfer rate is 5,04 Mbit/sec.");
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break;
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case MaximumRateField.TenMbps:
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sb.AppendLine("Disc maximum transfer rate is 10,08 Mbit/sec.");
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break;
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case MaximumRateField.TwentyMbps:
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sb.AppendLine("Disc maximum transfer rate is 20,16 Mbit/sec.");
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break;
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case MaximumRateField.ThirtyMbps:
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sb.AppendLine("Disc maximum transfer rate is 30,24 Mbit/sec.");
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break;
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case MaximumRateField.Unspecified:
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sb.AppendLine("Disc maximum transfer rate is unspecified.");
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break;
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default:
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sb.AppendFormat("Disc maximum transfer rate is specified by unknown key {0}", decoded.MaximumRate)
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.AppendLine();
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break;
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}
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sb.AppendFormat("Disc has {0} layers", decoded.Layers + 1).AppendLine();
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if(decoded.TrackPath && decoded.Layers == 1) sb.AppendLine("Layers are in parallel track path");
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else if(!decoded.TrackPath && decoded.Layers == 1) sb.AppendLine("Layers are in opposite track path");
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switch(decoded.LinearDensity)
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{
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case LinearDensityField.TwoSix:
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sb.AppendLine("Pitch size is 0,267 μm/bit");
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break;
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case LinearDensityField.TwoNine:
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sb.AppendLine("Pitch size is 0,147 μm/bit");
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break;
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case LinearDensityField.FourZero:
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sb.AppendLine("Pitch size is between 0,409 μm/bit and 0,435 μm/bit");
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break;
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case LinearDensityField.TwoEight:
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sb.AppendLine("Pitch size is between 0,140 μm/bit and 0,148 μm/bit");
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break;
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case LinearDensityField.OneFive:
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sb.AppendLine("Pitch size is 0,153 μm/bit");
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break;
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case LinearDensityField.OneThree:
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sb.AppendLine("Pitch size is between 0,130 μm/bit and 0,140 μm/bit");
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break;
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case LinearDensityField.ThreeFive:
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sb.AppendLine("Pitch size is 0,353 μm/bit");
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break;
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default:
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sb.AppendFormat("Unknown pitch size key {0}", decoded.LinearDensity).AppendLine();
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break;
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}
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switch(decoded.TrackDensity)
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{
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case TrackDensityField.Seven:
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sb.AppendLine("Track size is 0,74 μm");
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break;
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case TrackDensityField.Eight:
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sb.AppendLine("Track size is 0,80 μm");
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break;
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case TrackDensityField.Six:
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sb.AppendLine("Track size is 0,615 μm");
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break;
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case TrackDensityField.Four:
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sb.AppendLine("Track size is 0,40 μm");
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break;
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case TrackDensityField.Three:
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sb.AppendLine("Track size is 0,34 μm");
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break;
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default:
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sb.AppendFormat("Unknown track size key {0}", decoded.LinearDensity).AppendLine();
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break;
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}
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if(decoded.DataAreaStartPSN > 0)
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if(decoded.DataAreaEndPSN > 0)
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{
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sb.AppendFormat("Data area starts at PSN {0:X}h", decoded.DataAreaStartPSN).AppendLine();
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sb.AppendFormat("Data area ends at PSN {0:X}h", decoded.DataAreaEndPSN).AppendLine();
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if(decoded.Layers == 1 && !decoded.TrackPath)
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sb.AppendFormat("Layer 0 ends at PSN {0:X}h", decoded.Layer0EndPSN).AppendLine();
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}
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else
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sb.AppendLine("Disc is empty");
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else sb.AppendLine("Disc is empty");
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sb.AppendLine("Challenges:");
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foreach(ChallengeEntry entry in decoded.ChallengeEntries)
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{
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sb.AppendFormat("\tChallenge ID: {0}", entry.ChallengeId).AppendLine();
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sb.AppendFormat("\tChallenge level: {0}", entry.Level).AppendLine();
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sb.AppendFormat("\tChallenge value: 0x{0:X8}", entry.ChallengeValue).AppendLine();
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sb.AppendFormat("\tResponse modifier: {0}", entry.ResponseModifier).AppendLine();
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sb.AppendFormat("\tResponse value: 0x{0:X8}", entry.ResponseValue).AppendLine();
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}
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for(int i = 0; i < 16; i++)
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sb.AppendFormat("Extent starts at PSN {0:X6}h and ends at PSN {1:X6}h", decoded.Extents[i].StartPSN,
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decoded.Extents[i].EndPSN).AppendLine();
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return sb.ToString();
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}
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public static string Prettify(byte[] response) => Prettify(Decode(response));
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}
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} |