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Add raw DVD reading with HL-DT-ST command
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| // /*************************************************************************** | ||
| // Aaru Data Preservation Suite | ||
| // ---------------------------------------------------------------------------- | ||
| // | ||
| // Filename : Cache.cs | ||
| // Author(s) : Natalia Portillo <claunia@claunia.com> | ||
| // | ||
| // --[ License ] -------------------------------------------------------------- | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as | ||
| // published by the Free Software Foundation, either version 3 of the | ||
| // License, or (at your option) any later version. | ||
| // | ||
| // This program 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 General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| // | ||
| // ---------------------------------------------------------------------------- | ||
| // Copyright © 2011-2023 Natalia Portillo | ||
| // Copyright © 2020-2023 Rebecca Wallander | ||
| // ****************************************************************************/ | ||
|
|
||
| using System.Linq; | ||
| using Aaru.CommonTypes.AaruMetadata; | ||
| using Aaru.CommonTypes.Enums; | ||
| using Aaru.CommonTypes.Extents; | ||
| using Aaru.CommonTypes.Interfaces; | ||
| using Aaru.Core.Logging; | ||
| using Aaru.Decryption.DVD; | ||
| using Humanizer; | ||
| using Humanizer.Bytes; | ||
| using DVDDecryption = Aaru.Decryption.DVD.Dump; | ||
|
|
||
| // ReSharper disable JoinDeclarationAndInitializer | ||
| // ReSharper disable InlineOutVariableDeclaration | ||
| // ReSharper disable TooWideLocalVariableScope | ||
|
|
||
| namespace Aaru.Core.Devices.Dumping; | ||
|
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||
| partial class Dump | ||
| { | ||
| /// <summary> | ||
| /// Dumps data when dumping from a SCSI Block Commands compliant device, | ||
| /// and reads the data from the device cache | ||
| /// </summary> | ||
| /// <param name="blocks">Media blocks</param> | ||
| /// <param name="maxBlocksToRead">Maximum number of blocks to read in a single command</param> | ||
| /// <param name="blockSize">Block size in bytes</param> | ||
| /// <param name="currentTry">Resume information</param> | ||
| /// <param name="extents">Correctly dump extents</param> | ||
| /// <param name="currentSpeed">Current speed</param> | ||
| /// <param name="minSpeed">Minimum speed</param> | ||
| /// <param name="maxSpeed">Maximum speed</param> | ||
| /// <param name="totalDuration">Total time spent in commands</param> | ||
| /// <param name="scsiReader">SCSI reader</param> | ||
| /// <param name="mhddLog">MHDD log</param> | ||
| /// <param name="ibgLog">ImgBurn log</param> | ||
| /// <param name="imageWriteDuration">Total time spent writing to image</param> | ||
| /// <param name="newTrim">Set if we need to start a trim</param> | ||
| /// <param name="discKey">The DVD disc key</param> | ||
| void ReadCacheData(in ulong blocks, in uint maxBlocksToRead, in uint blockSize, DumpHardware currentTry, | ||
| ExtentsULong extents, ref double currentSpeed, ref double minSpeed, ref double maxSpeed, | ||
| ref double totalDuration, Reader scsiReader, MhddLog mhddLog, IbgLog ibgLog, | ||
| ref double imageWriteDuration, ref bool newTrim, byte[] discKey) | ||
| { | ||
| ulong sectorSpeedStart = 0; | ||
| bool sense; | ||
| byte[] buffer; | ||
| uint blocksToRead = maxBlocksToRead; | ||
| var outputFormat = _outputPlugin as IWritableImage; | ||
|
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| InitProgress?.Invoke(); | ||
|
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| if(scsiReader.HldtstReadRaw && _resume.NextBlock > 0) | ||
| // The HL-DT-ST buffer is stored and read in 96-sector chunks. If we start to read at an LBA which is | ||
| // not modulo 96, the data will not be correctly fetched. Therefore, we begin every resume read with | ||
| // filling the buffer at a known offset. | ||
| // TODO: This is very ugly and there probably exist a more elegant way to solve this issue. | ||
| scsiReader.ReadBlock(out _, _resume.NextBlock - (_resume.NextBlock % 96) + 1, out _, out _, out _); | ||
|
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||
| for(ulong i = _resume.NextBlock; i < blocks; i += blocksToRead) | ||
| { | ||
| if(_aborted) | ||
| { | ||
| currentTry.Extents = ExtentsConverter.ToMetadata(extents); | ||
| UpdateStatus?.Invoke(Localization.Core.Aborted); | ||
| _dumpLog.WriteLine(Localization.Core.Aborted); | ||
|
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| break; | ||
| } | ||
|
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| if(blocks - i < blocksToRead) | ||
| blocksToRead = (uint)(blocks - i); | ||
|
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| if(currentSpeed > maxSpeed && currentSpeed > 0) | ||
| maxSpeed = currentSpeed; | ||
|
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| if(currentSpeed < minSpeed && currentSpeed > 0) | ||
| minSpeed = currentSpeed; | ||
|
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| UpdateProgress?. | ||
| Invoke(string.Format(Localization.Core.Reading_sector_0_of_1_2, i, blocks, ByteSize.FromMegabytes(currentSpeed).Per(_oneSecond).Humanize()), | ||
| (long)i, (long)blocks); | ||
|
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| sense = scsiReader.ReadBlocks(out buffer, i, blocksToRead, out double cmdDuration, out _, out _); | ||
| totalDuration += cmdDuration; | ||
|
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| if(!sense && !_dev.Error) | ||
| { | ||
| mhddLog.Write(i, cmdDuration, blocksToRead); | ||
| ibgLog.Write(i, currentSpeed * 1024); | ||
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| _writeStopwatch.Restart(); | ||
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| byte[] tmpBuf; | ||
| byte[] cmi = new byte[blocksToRead]; | ||
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| for(uint j = 0; j < blocksToRead; j++) | ||
| { | ||
| byte[] key = buffer.Skip((int)((2064 * j) + 7)).Take(5).ToArray(); | ||
|
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| if(key.All(static k => k == 0)) | ||
| { | ||
| outputFormat.WriteSectorTag(new byte[] | ||
| { | ||
| 0, 0, 0, 0, 0 | ||
| }, i + j, SectorTagType.DvdTitleKeyDecrypted); | ||
|
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| _resume.MissingTitleKeys.Remove(i + j); | ||
|
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| continue; | ||
| } | ||
|
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| CSS.DecryptTitleKey(discKey, key, out tmpBuf); | ||
| outputFormat.WriteSectorTag(tmpBuf, i + j, SectorTagType.DvdTitleKeyDecrypted); | ||
| _resume.MissingTitleKeys.Remove(i + j); | ||
|
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| if(_storeEncrypted) | ||
| continue; | ||
|
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| cmi[j] = buffer[2064 * j + 6]; | ||
| } | ||
|
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| // Todo: Flag in the outputFormat that a sector has been decrypted | ||
| if(!_storeEncrypted) | ||
| { | ||
| ErrorNumber errno = | ||
| outputFormat.ReadSectorsTag(i, blocksToRead, SectorTagType.DvdTitleKeyDecrypted, | ||
| out byte[] titleKey); | ||
|
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||
| if(errno != ErrorNumber.NoError) | ||
| ErrorMessage?.Invoke(string.Format(Localization.Core.Error_retrieving_title_key_for_sector_0, | ||
| i)); | ||
| else | ||
| buffer = CSS.DecryptSectorLong(buffer, titleKey, cmi, blocksToRead); | ||
| } | ||
|
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| outputFormat.WriteSectorsLong(buffer, i, blocksToRead); | ||
|
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| imageWriteDuration += _writeStopwatch.Elapsed.TotalSeconds; | ||
| extents.Add(i, blocksToRead, true); | ||
| _mediaGraph?.PaintSectorsGood(i, blocksToRead); | ||
| } | ||
| else | ||
| { | ||
| // TODO: Reset device after X errors | ||
| if(_stopOnError) | ||
| return; // TODO: Return more cleanly | ||
|
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| if(i + _skip > blocks) | ||
| _skip = (uint)(blocks - i); | ||
|
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| // Write empty data | ||
| _writeStopwatch.Restart(); | ||
| outputFormat.WriteSectors(new byte[blockSize * _skip], i, _skip); | ||
| imageWriteDuration += _writeStopwatch.Elapsed.TotalSeconds; | ||
|
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| for(ulong b = i; b < i + _skip; b++) | ||
| _resume.BadBlocks.Add(b); | ||
|
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| mhddLog.Write(i, cmdDuration < 500 ? 65535 : cmdDuration, _skip); | ||
|
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| ibgLog.Write(i, 0); | ||
| _dumpLog.WriteLine(Localization.Core.Skipping_0_blocks_from_errored_block_1, _skip, i); | ||
| i += _skip - blocksToRead; | ||
| newTrim = true; | ||
| } | ||
|
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| _writeStopwatch.Stop(); | ||
| sectorSpeedStart += blocksToRead; | ||
| _resume.NextBlock = i + blocksToRead; | ||
|
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| double elapsed = _speedStopwatch.Elapsed.TotalSeconds; | ||
|
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| if(elapsed <= 0) | ||
| continue; | ||
|
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| currentSpeed = sectorSpeedStart * blockSize / (1048576 * elapsed); | ||
| sectorSpeedStart = 0; | ||
| _speedStopwatch.Restart(); | ||
| } | ||
|
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| _speedStopwatch.Stop(); | ||
| _resume.BadBlocks = _resume.BadBlocks.Distinct().ToList(); | ||
|
|
||
| EndProgress?.Invoke(); | ||
| } | ||
| } |
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