mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
Natalia Portillo
a980b38c10
Introduces constant fields for respective debug module names, replacing the hardcoded ones. This is done to standardize the naming convention, reduce redundancy and potentially avoid any typos or name mismatches across the project. This change makes the code more maintainable and easier to update in case module names need to be changed.
482 lines
21 KiB
C#
482 lines
21 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Dump.cs
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// Author(s) : Rebecca Wallander <sakcheen+github@gmail.com>
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// SCSI read commands related to Content Scrambling System.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2020-2023 Rebecca Wallander
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// ****************************************************************************/
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using System;
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using System.Linq;
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using Aaru.Console;
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using Aaru.Decoders.DVD;
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using Aaru.Devices;
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namespace Aaru.Decryption.DVD;
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public sealed class Dump
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{
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const byte KEY_SIZE = 5;
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const byte CHALLENGE_SIZE = 2 * KEY_SIZE;
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const string MODULE_NAME = "DVD decryption";
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readonly Device _dev;
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public Dump(Device dev)
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{
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_dev = dev;
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BusKey = Array.Empty<byte>();
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Agid = 0;
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}
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public byte Agid { get; private set; }
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public byte[] BusKey { get; private set; }
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/// <summary>Returns the Authentication Success Flag of the logical unit.</summary>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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/// <param name="buffer">Buffer where the Authentication Success Flag will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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public bool ReadAsf(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[8];
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.Asf ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms,
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duration, Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Returns the Regional Playback Control State of the logical unit.</summary>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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public bool ReadRpc(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[8];
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.RpcState ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_ASF_AGID_1_Sense_2_Last_Error_3_took_0_ms,
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duration, Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Invalidates an Authentication Grant ID.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool InvalidateAgid(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = Array.Empty<byte>();
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.InvalidateAgid ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME, Localization.INVALIDATE_AGID_AGID_1_Sense_2_Last_Error_3_took_0_ms,
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duration, Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Returns a valid Authentication Grant ID for CSS/CPPM.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool ReportAgidCssCppm(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[8];
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.AgidForCssCppm ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME,
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Localization.REPORT_AGID_CSS_CPPM_AGID_1_Sense_2_Last_Error_3_took_0_ms, duration,
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Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Returns KEY1 from the logical unit.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool ReportKey1(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[12];
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.Key1 ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_KEY1_AGID_1_Sense_2_Last_Error_3_took_0_ms,
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duration, Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Returns the challenge from the logical unit.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool ReportChallenge(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[16];
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cdb[0] = (byte)ScsiCommands.ReportKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssReportKeyFormat.ChallengeKey ^ ((Agid & 0x03) << 6));
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME, Localization.REPORT_CHALLENGE_AGID_1_Sense_2_Last_Error_3_took_0_ms,
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duration, Agid, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Send a challenge to the logical unit.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="challengeKey">The challenge; can be any 10 bytes.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool SendChallenge(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, byte[] challengeKey,
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uint timeout, out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[16];
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cdb[0] = (byte)ScsiCommands.SendKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssSendKeyFormat.ChallengeKey ^ ((Agid & 0x03) << 6));
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buffer[0] = (byte)(((buffer.Length - 2) & 0xFF00) >> 8);
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buffer[1] = (byte)((buffer.Length - 2) & 0xFF);
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buffer[4] = challengeKey[9];
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buffer[5] = challengeKey[8];
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buffer[6] = challengeKey[7];
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buffer[7] = challengeKey[6];
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buffer[8] = challengeKey[5];
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buffer[9] = challengeKey[4];
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buffer[10] = challengeKey[3];
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buffer[11] = challengeKey[2];
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buffer[12] = challengeKey[1];
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buffer[13] = challengeKey[0];
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration,
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out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME,
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Localization.SEND_CHALLENGE_AGID_1_Challenge_2_Sense_3_Last_Error_4_took_0_ms,
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duration, Agid, challengeKey, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Send KEY2 to the logical unit.</summary>
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/// <param name="buffer">Buffer where the Regional Playback Control State will be stored.</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="keyClass">Key class.</param>
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/// <param name="key2">The KEY2 message.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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public bool SendKey2(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, byte[] key2, uint timeout,
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out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[12];
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cdb[0] = (byte)ScsiCommands.SendKey;
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cdb[7] = (byte)keyClass;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((byte)CssSendKeyFormat.Key2 ^ ((Agid & 0x03) << 6));
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buffer[0] = (byte)(((buffer.Length - 2) & 0xFF00) >> 8);
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buffer[1] = (byte)((buffer.Length - 2) & 0xFF);
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buffer[4] = key2[4];
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buffer[5] = key2[3];
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buffer[6] = key2[2];
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buffer[7] = key2[1];
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buffer[8] = key2[0];
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.Out, out duration,
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out bool sense);
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AaruConsole.DebugWriteLine(MODULE_NAME,
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Localization.SEND_CHALLENGE_AGID_1_KEY2_2_Sense_3_Last_Error_4_took_0_ms, duration,
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Agid, key2, sense, _dev.LastError);
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return sense;
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}
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/// <summary>Returns the encrypted disc key of the MMC logical unit</summary>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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/// <param name="buffer">Buffer where the bus key will be stored</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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public bool ReadDiscKey(out byte[] buffer, out byte[] senseBuffer, uint timeout, out double duration)
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{
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senseBuffer = new byte[64];
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byte[] cdb = new byte[12];
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buffer = new byte[2052];
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cdb[0] = (byte)ScsiCommands.ReadDiscStructure;
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cdb[1] = (byte)MmcDiscStructureMediaType.Dvd & 0x0F;
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cdb[6] = 0;
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cdb[7] = (byte)MmcDiscStructureFormat.DiscKey;
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cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
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cdb[9] = (byte)(buffer.Length & 0xFF);
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cdb[10] = (byte)((Agid & 0x03) << 6);
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_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
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return sense;
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}
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/// <summary>Returns the bus key of the MMC logical unit</summary>
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/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
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/// <param name="buffer">Buffer where the bus key will be stored</param>
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/// <param name="senseBuffer">Sense buffer.</param>
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/// <param name="protectionType">The type of protection the logical unit reports</param>
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/// <param name="timeout">Timeout in seconds.</param>
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/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
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public bool ReadBusKey(out byte[] buffer, out byte[] senseBuffer, CopyrightType protectionType, uint timeout,
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out double duration)
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{
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duration = 0;
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buffer = Array.Empty<byte>();
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senseBuffer = new byte[64];
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bool sense = false;
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byte[] challenge = new byte[CHALLENGE_SIZE];
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byte[] key1 = new byte[KEY_SIZE];
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byte variant = 0;
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for(byte i = 0; i < 4; i++)
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{
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// Invalidate AGID to reset any previous drive communications
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Agid = i;
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sense = InvalidateAgid(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout, out duration);
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switch(protectionType)
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{
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// Get AGID
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case CopyrightType.CSS:
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sense = ReportAgidCssCppm(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout,
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out duration);
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break;
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case CopyrightType.CPRM: throw new NotImplementedException();
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}
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if(sense)
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continue;
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Agid = (byte)(buffer[7] >> 6);
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break;
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}
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if(sense)
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return true;
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for(byte i = 0; i < CHALLENGE_SIZE; i++)
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challenge[i] = i;
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sense = SendChallenge(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, challenge, timeout,
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out duration);
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if(sense)
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return true;
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sense = ReportKey1(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout, out duration);
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if(sense)
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return true;
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for(byte i = 0; i < KEY_SIZE; i++)
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key1[i] = buffer[8 - i];
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for(byte i = 0; i < 32; i++)
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{
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CSS.EncryptKey(DvdCssKeyType.Key1, i, challenge, out byte[] keyCheck);
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if(key1.SequenceEqual(keyCheck))
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{
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variant = i;
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break;
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}
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if(i < 31)
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continue;
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senseBuffer = Array.Empty<byte>();
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return true;
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}
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sense = ReportChallenge(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, timeout, out duration);
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if(sense)
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return true;
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for(byte i = 0; i < CHALLENGE_SIZE; i++)
|
|
challenge[i] = buffer[13 - i];
|
|
|
|
CSS.EncryptKey(DvdCssKeyType.Key2, variant, challenge, out byte[] key2);
|
|
|
|
sense = SendKey2(out buffer, out senseBuffer, DvdCssKeyClass.DvdCssCppmOrCprm, key2, timeout, out duration);
|
|
|
|
if(sense)
|
|
return true;
|
|
|
|
key1.CopyTo(challenge, 0);
|
|
key2.CopyTo(challenge, key1.Length);
|
|
CSS.EncryptKey(DvdCssKeyType.BusKey, variant, challenge, out buffer);
|
|
|
|
BusKey = buffer;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// <summary>Reads a title key for a sector on the disc.</summary>
|
|
/// <param name="buffer">Buffer where the bus key will be stored</param>
|
|
/// <param name="senseBuffer">Sense buffer.</param>
|
|
/// <param name="keyClass">Key class.</param>
|
|
/// <param name="address">The sector address to get the key for.</param>
|
|
/// <param name="timeout">Timeout in seconds.</param>
|
|
/// <param name="duration">Duration in milliseconds it took for the device to execute the command.</param>
|
|
/// <returns><c>true</c> if the command failed and <paramref name="senseBuffer" /> contains the sense buffer.</returns>
|
|
public bool ReadTitleKey(out byte[] buffer, out byte[] senseBuffer, DvdCssKeyClass keyClass, ulong address,
|
|
uint timeout, out double duration)
|
|
{
|
|
// We need to be in a bus key state to read title keys. Only CSS has title keys.
|
|
ReadBusKey(out buffer, out senseBuffer, CopyrightType.CSS, timeout, out duration);
|
|
|
|
BusKey = buffer;
|
|
|
|
senseBuffer = new byte[64];
|
|
byte[] cdb = new byte[12];
|
|
buffer = new byte[12];
|
|
|
|
cdb[0] = (byte)ScsiCommands.ReportKey;
|
|
cdb[2] = (byte)((address & 0xFF000000) >> 24);
|
|
cdb[3] = (byte)((address & 0xFF0000) >> 16);
|
|
cdb[4] = (byte)((address & 0xFF00) >> 8);
|
|
cdb[5] = (byte)(address & 0xFF);
|
|
cdb[7] = (byte)keyClass;
|
|
cdb[8] = (byte)((buffer.Length & 0xFF00) >> 8);
|
|
cdb[9] = (byte)(buffer.Length & 0xFF);
|
|
cdb[10] = (byte)((byte)CssReportKeyFormat.TitleKey ^ ((Agid & 0x03) << 6));
|
|
|
|
_dev.SendScsiCommand(cdb, ref buffer, out senseBuffer, timeout, ScsiDirection.In, out duration, out bool sense);
|
|
|
|
AaruConsole.DebugWriteLine(MODULE_NAME, Localization.GET_TITLE_KEY_AGID_1_LBA_2_Sense_3_took_0_ms, duration,
|
|
Agid, address, sense);
|
|
|
|
return sense;
|
|
}
|
|
} |