public override bool VerifyCurrentFileAgainstDigest(string algorithmName, byte[] digest)
{
return(StreamUtilities.VerifyAgainstDigest(tarStream, CurrentFileSize(), algorithmName, digest));
}
/// <summary>
/// Examines the given data stream and attempts to determine if it is in .bin format.
/// </summary>
/// <param name="filePath">The path to the ROM file.</param>
/// <param name="configFilePath">The path to the config file.</param>
/// <returns>A valid BinFormatRom if the file appears to be a valid .bin (or similar) file, otherwise <c>null</c>.</returns>
/// <remarks>Apparently, there may be odd-sized files floating around out there, in which case this will fail.</remarks>
internal static new BinFormatRom Create(string filePath, string configFilePath)
{
BinFormatRom bin = null;
var format = CheckFormat(filePath);
if (format == RomFormat.Bin)
{
using (System.IO.Stream configFile = (configFilePath == null) ? null : StreamUtilities.OpenFileStream(configFilePath))
{
// any valid .bin file will be even sized -- except for some available through the Digital Press. For some reason, these all seem to be a multiple of
// 8KB + 1 byte in size. So allow those through, too.
var configFileCheck = ((configFile != null) && (configFile.Length > 0)) || configFile == null;
if (configFileCheck)
{
bin = new BinFormatRom()
{
Format = RomFormat.Bin, IsValid = true, RomPath = filePath, ConfigPath = configFilePath
};
}
}
}
return(bin);
}
public ReaderDirEntry(IsoContext context, DirectoryRecord dirRecord)
{
_context = context;
_record = dirRecord;
_fileName = _record.FileIdentifier;
bool rockRidge = !string.IsNullOrEmpty(_context.RockRidgeIdentifier);
if (context.SuspDetected && _record.SystemUseData != null)
{
SuspRecords = new SuspRecords(_context, _record.SystemUseData, 0);
}
if (rockRidge && SuspRecords != null)
{
// The full name is taken from this record, even if it's a child-link record
List <SystemUseEntry> nameEntries = SuspRecords.GetEntries(_context.RockRidgeIdentifier, "NM");
StringBuilder rrName = new StringBuilder();
if (nameEntries != null && nameEntries.Count > 0)
{
foreach (PosixNameSystemUseEntry nameEntry in nameEntries)
{
rrName.Append(nameEntry.NameData);
}
_fileName = rrName.ToString();
}
// If this is a Rock Ridge child link, replace the dir record with that from the 'self' record
// in the child directory.
ChildLinkSystemUseEntry clEntry =
SuspRecords.GetEntry <ChildLinkSystemUseEntry>(_context.RockRidgeIdentifier, "CL");
if (clEntry != null)
{
_context.DataStream.Position = clEntry.ChildDirLocation * _context.VolumeDescriptor.LogicalBlockSize;
byte[] firstSector = StreamUtilities.ReadFully(_context.DataStream,
_context.VolumeDescriptor.LogicalBlockSize);
DirectoryRecord.ReadFrom(firstSector, 0, _context.VolumeDescriptor.CharacterEncoding, out _record);
if (_record.SystemUseData != null)
{
SuspRecords = new SuspRecords(_context, _record.SystemUseData, 0);
}
}
}
LastAccessTimeUtc = _record.RecordingDateAndTime;
LastWriteTimeUtc = _record.RecordingDateAndTime;
CreationTimeUtc = _record.RecordingDateAndTime;
if (rockRidge && SuspRecords != null)
{
FileTimeSystemUseEntry tfEntry =
SuspRecords.GetEntry <FileTimeSystemUseEntry>(_context.RockRidgeIdentifier, "TF");
if (tfEntry != null)
{
if ((tfEntry.TimestampsPresent & FileTimeSystemUseEntry.Timestamps.Access) != 0)
{
LastAccessTimeUtc = tfEntry.AccessTime;
}
if ((tfEntry.TimestampsPresent & FileTimeSystemUseEntry.Timestamps.Modify) != 0)
{
LastWriteTimeUtc = tfEntry.ModifyTime;
}
if ((tfEntry.TimestampsPresent & FileTimeSystemUseEntry.Timestamps.Creation) != 0)
{
CreationTimeUtc = tfEntry.CreationTime;
}
}
}
}
private void PreVerifyMft(File file)
{
int recordLength = _context.BiosParameterBlock.MftRecordSize;
int bytesPerSector = _context.BiosParameterBlock.BytesPerSector;
// Check out the MFT's clusters
foreach (Range <long, long> range in file.GetAttribute(AttributeType.Data, null).GetClusters())
{
if (!VerifyClusterRange(range))
{
ReportError("Corrupt cluster range in MFT data attribute {0}", range.ToString());
Abort();
}
}
foreach (Range <long, long> range in file.GetAttribute(AttributeType.Bitmap, null).GetClusters())
{
if (!VerifyClusterRange(range))
{
ReportError("Corrupt cluster range in MFT bitmap attribute {0}", range.ToString());
Abort();
}
}
using (Stream mftStream = file.OpenStream(AttributeType.Data, null, FileAccess.Read))
using (Stream bitmapStream = file.OpenStream(AttributeType.Bitmap, null, FileAccess.Read))
{
Bitmap bitmap = new Bitmap(bitmapStream, long.MaxValue);
long index = 0;
while (mftStream.Position < mftStream.Length)
{
byte[] recordData = StreamUtilities.ReadFully(mftStream, recordLength);
string magic = EndianUtilities.BytesToString(recordData, 0, 4);
if (magic != "FILE")
{
if (bitmap.IsPresent(index))
{
ReportError("Invalid MFT record magic at index {0} - was ({2},{3},{4},{5}) \"{1}\"", index,
magic.Trim('\0'), (int)magic[0], (int)magic[1], (int)magic[2], (int)magic[3]);
}
}
else
{
if (!VerifyMftRecord(recordData, bitmap.IsPresent(index), bytesPerSector))
{
ReportError("Invalid MFT record at index {0}", index);
StringBuilder bldr = new StringBuilder();
for (int i = 0; i < recordData.Length; ++i)
{
bldr.Append(string.Format(CultureInfo.InvariantCulture, " {0:X2}", recordData[i]));
}
ReportInfo("MFT record binary data for index {0}:{1}", index, bldr.ToString());
}
}
index++;
}
}
}
/// <summary>
/// Read *from* this stream and write to the targetStream in a buffered manner as per the Read()
/// </summary>
/// <param name="targetStream">Stream to put data into</param>
public void BufferedRead(Stream targetStream)
{
StreamUtilities.BufferedStreamCopy(this, targetStream);
}
public void StreamUtilitiesWithTestStorage_CallFileExistsWithNonexistentPath_ReturnsFalse()
{
var storage = new TestStorageAccess();
Assert.False(StreamUtilities.FileExists(@"SomeInvalidPathThatDoesNotExist", storage));
}
public void StreamUtilitiesWithTestStorage_CallLastWriteTimeUtcWithNonexistentPath_ReturnsDefaultDateTime()
{
var storage = new TestStorageAccess();
Assert.Equal(FileNotFoundTime, StreamUtilities.LastFileWriteTimeUtc(@"SomeSillyPathWithNoLastWriteTime", storage));
}
public void BufferedStreamCopyWithNullOutputStream()
{
using (MemoryStream ms = new MemoryStream())
Assert.Throws(typeof(ArgumentNullException), () => StreamUtilities.BufferedStreamCopy(ms, null));
}
public VfsExtFileSystem(Stream stream, FileSystemParameters parameters)
: base(new ExtFileSystemOptions(parameters))
{
stream.Position = 1024;
byte[] superblockData = StreamUtilities.ReadExact(stream, 1024);
SuperBlock superblock = new SuperBlock();
superblock.ReadFrom(superblockData, 0);
if (superblock.Magic != SuperBlock.Ext2Magic)
{
throw new IOException("Invalid superblock magic - probably not an Ext file system");
}
if (superblock.RevisionLevel == SuperBlock.OldRevision)
{
throw new IOException("Old ext revision - not supported");
}
if ((superblock.IncompatibleFeatures & ~SupportedIncompatibleFeatures) != 0)
{
throw new IOException("Incompatible ext features present: " +
(superblock.IncompatibleFeatures & ~SupportedIncompatibleFeatures));
}
Context = new Context
{
RawStream = stream,
SuperBlock = superblock,
Options = (ExtFileSystemOptions)Options
};
uint numGroups = MathUtilities.Ceil(superblock.BlocksCount, superblock.BlocksPerGroup);
long blockDescStart = (superblock.FirstDataBlock + 1) * (long)superblock.BlockSize;
stream.Position = blockDescStart;
var bgDescSize = superblock.Has64Bit ? superblock.DescriptorSize : BlockGroup.DescriptorSize;
byte[] blockDescData = StreamUtilities.ReadExact(stream, (int)numGroups * bgDescSize);
_blockGroups = new BlockGroup[numGroups];
for (int i = 0; i < numGroups; ++i)
{
BlockGroup bg = superblock.Has64Bit ? new BlockGroup64(bgDescSize) : new BlockGroup();
bg.ReadFrom(blockDescData, i * bgDescSize);
_blockGroups[i] = bg;
}
var journalSuperBlock = new JournalSuperBlock();
if (superblock.JournalInode != 0)
{
var journalInode = GetInode(superblock.JournalInode);
var journalDataStream = journalInode.GetContentBuffer(Context);
var journalData = StreamUtilities.ReadExact(journalDataStream, 0, 1024 + 12);
journalSuperBlock.ReadFrom(journalData, 0);
Context.JournalSuperblock = journalSuperBlock;
}
RootDirectory = new Directory(Context, 2, GetInode(2));
}
internal Slot(Stream stream)
{
byte[] buffer = StreamUtilities.ReadExact(stream, 32);
Load(buffer, 0);
}
private void LoadRun(CompressedRun run)
{
int toCopy = (int)(run.SectorCount * Sizes.Sector);
switch (run.Type)
{
case RunType.ZlibCompressed:
this.stream.Position = run.CompOffset + 2; // 2 byte zlib header
using (DeflateStream ds = new DeflateStream(this.stream, CompressionMode.Decompress, true))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.AdcCompressed:
this.stream.Position = run.CompOffset;
byte[] compressed = StreamUtilities.ReadExact(this.stream, (int)run.CompLength);
if (ADCDecompress(compressed, 0, compressed.Length, this.decompBuffer, 0) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.BZlibCompressed:
using (
BZip2DecoderStream ds =
new BZip2DecoderStream(
new SubStream(
this.stream,
run.CompOffset,
run.CompLength),
Ownership.None))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.LzfseCompressed:
this.stream.Position = run.CompOffset;
byte[] lzfseCompressed = StreamUtilities.ReadExact(this.stream, (int)run.CompLength);
if (LzfseCompressor.Decompress(lzfseCompressed, this.decompBuffer) != toCopy)
{
throw new InvalidDataException("Run too short when decompressed");
}
break;
case RunType.LzmaCompressed:
using (var ds = new XZInputStream(
new SubStream(
this.stream,
run.CompOffset,
run.CompLength)))
{
StreamUtilities.ReadExact(ds, this.decompBuffer, 0, toCopy);
}
break;
case RunType.Zeros:
case RunType.Raw:
case RunType.None:
break;
default:
throw new NotImplementedException("Unrecognized run type " + run.Type);
}
this.activeRun = run;
}
public override int Read(byte[] buffer, int offset, int count)
{
CheckDisposed();
if (_atEof || _position > _length)
{
_atEof = true;
throw new IOException("Attempt to read beyond end of file");
}
if (_position == _length)
{
_atEof = true;
return(0);
}
if (_position % _metadata.LogicalSectorSize != 0 || count % _metadata.LogicalSectorSize != 0)
{
throw new IOException("Unaligned read");
}
int totalToRead = (int)Math.Min(_length - _position, count);
int totalRead = 0;
while (totalRead < totalToRead)
{
int chunkIndex;
int blockIndex;
int sectorIndex;
Chunk chunk = GetChunk(_position + totalRead, out chunkIndex, out blockIndex, out sectorIndex);
int blockOffset = (int)(sectorIndex * _metadata.LogicalSectorSize);
int blockBytesRemaining = (int)(_fileParameters.BlockSize - blockOffset);
PayloadBlockStatus blockStatus = chunk.GetBlockStatus(blockIndex);
if (blockStatus == PayloadBlockStatus.FullyPresent)
{
_fileStream.Position = chunk.GetBlockPosition(blockIndex) + blockOffset;
int read = StreamUtilities.ReadMaximum(_fileStream, buffer, offset + totalRead,
Math.Min(blockBytesRemaining, totalToRead - totalRead));
totalRead += read;
}
else if (blockStatus == PayloadBlockStatus.PartiallyPresent)
{
BlockBitmap bitmap = chunk.GetBlockBitmap(blockIndex);
bool present;
int numSectors = bitmap.ContiguousSectors(sectorIndex, out present);
int toRead = (int)Math.Min(numSectors * _metadata.LogicalSectorSize, totalToRead - totalRead);
int read;
if (present)
{
_fileStream.Position = chunk.GetBlockPosition(blockIndex) + blockOffset;
read = StreamUtilities.ReadMaximum(_fileStream, buffer, offset + totalRead, toRead);
}
else
{
_parentStream.Position = _position + totalRead;
read = StreamUtilities.ReadMaximum(_parentStream, buffer, offset + totalRead, toRead);
}
totalRead += read;
}
else if (blockStatus == PayloadBlockStatus.NotPresent)
{
_parentStream.Position = _position + totalRead;
int read = StreamUtilities.ReadMaximum(_parentStream, buffer, offset + totalRead,
Math.Min(blockBytesRemaining, totalToRead - totalRead));
totalRead += read;
}
else
{
int zeroed = Math.Min(blockBytesRemaining, totalToRead - totalRead);
Array.Clear(buffer, offset + totalRead, zeroed);
totalRead += zeroed;
}
}
_position += totalRead;
return(totalRead);
}
/// <summary>
/// Created this to test the custom neuron network with binary inputs.
/// </summary>
/// <param name="writer"></param>
public static void Test(
string file,
int numberOfInputNeurons,
int numberOfHiddenNeurons,
int numberOfOutputNeurons,
int numberOfCycles = 50000,
double learningRate = 0.25)
{
TrainingSample sample = new TrainingSample(
new double[] { },
new double[] { });
//We might make a gui for this later.
double[] errorList = new double[numberOfCycles];
int totalNumberOfNeurons = numberOfInputNeurons + numberOfOutputNeurons;
LinearLayer inputLayer = new LinearLayer(numberOfInputNeurons);
SigmoidLayer hiddenLayer = new SigmoidLayer(numberOfHiddenNeurons);
SigmoidLayer outputLayer = new SigmoidLayer(numberOfOutputNeurons);
// This layer is a event handler that fires when the output is generated, hence backpropagation.
BackpropagationConnector conn1 = new BackpropagationConnector(inputLayer, hiddenLayer);
BackpropagationConnector conn2 = new BackpropagationConnector(hiddenLayer, outputLayer);
BackpropagationNetwork network = new BackpropagationNetwork(inputLayer, outputLayer);
network.SetLearningRate(learningRate);
TrainingSet trainingSet = new TrainingSet(10, 8);
// A file stream reader.
var inDefaule = Console.In;
using (StreamReader reader = new StreamReader(file))
{
Console.SetIn(reader);
String line = "";
//trainingSet.Add(new TrainingSample(new double[] { 0, 0, 0, 0, 1 }, new double[1] { 1 }));
while ((line = reader.ReadLine()) != null)
{
String[] array = line.Split(',');
double[] inputArray = new double[10];
double[] outputArray = new double[8];
for (int i = 0; i < 10; i++)
{
inputArray[i] = Convert.ToDouble(array[i]);
}
for (int i = 0; i < 8; i++)
{
outputArray[i] = Convert.ToDouble(array[i + 11]);
}
trainingSet.Add(new TrainingSample(inputArray, outputArray));
}
}
double max = 0;
// create an anonymous function to capture the error value of each iteration, and report back the percent of completion.
network.EndEpochEvent +=
delegate(object networkInput, TrainingEpochEventArgs args)
{
errorList[args.TrainingIteration] = network.MeanSquaredError;
max = Math.Max(max, network.MeanSquaredError);
// PercentComplete = args.TrainingIteration * 100 / numberOfCycles;
};
network.Learn(trainingSet, numberOfCycles);
double[] indices = new double[numberOfCycles];
// for (int i = 0; i < numberOfCycles; i++) { indices[i] = i; } .. oh nvm, its for graphing the learning curve
// what to do for error list?
// errorList => for plotting stuff.
// for (int i = 0; i < numberOfCycles; i++)
// {
//Console.WriteLine(errorList[i]);
// }
// print out the error list for scientific evaluation.
StreamUtilities.DumpData("dumpErrorValues.txt", errorList);
double[] outputResult = network.OutputLayer.GetOutput();
outputResult = network.Run(new double[] { 0.47, 0.41, 0.12, 0.05, 0.1, 0.5, 0.1, 0.1, 0.05, 0.1 });
foreach (var d in outputResult)
{
Console.WriteLine("output: " + d);
}
// Console.WriteLine("final output");
}
internal static DynamicHeader FromStream(Stream stream)
{
return(FromBytes(StreamUtilities.ReadFully(stream, 1024), 0));
}
public void StreamUtilities_RegisterNull_ThrowsArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => StreamUtilities.Initialize(null));
}
/// <summary>
/// Updates the validation state of the given support file.
/// </summary>
/// <param name="whichFile">Which file to validate.</param>
/// <param name="crc">If non-zero, the CRC of the program ROM to compare against if validating the ROM file.</param>
/// <param name="programDescription">The program description being validated (if applicable).</param>
/// <param name="peripherals">The peripherals attached to the system, used for compatibility checks.</param>
/// <param name="connectedPeripheralsHistory">The peripherals that have been attached to the system over time.</param>
/// <param name="reportIfModified">If <c>true</c>, check if the file has been modified, not just whether it exists.</param>
/// <returns>The updated state of the file.</returns>
public ProgramSupportFileState ValidateSupportFile(ProgramFileKind whichFile, uint crc, IProgramDescription programDescription, IEnumerable <IPeripheral> peripherals, IEnumerable <IPeripheral> connectedPeripheralsHistory, bool reportIfModified)
{
var validationState = ProgramSupportFileState.None;
switch (whichFile)
{
case ProgramFileKind.Rom:
var isValid = Rom.Validate();
if (!string.IsNullOrEmpty(RomImagePath))
{
var previousValidationState = ProgramSupportFileState.None;
_supportFileStates.TryGetValue(whichFile, out previousValidationState);
if (!StreamUtilities.FileExists(RomImagePath))
{
validationState = ProgramSupportFileState.Missing;
if (AlternateRomImagePaths.Any(p => StreamUtilities.FileExists(p)))
{
validationState = ProgramSupportFileState.MissingWithAlternateFound;
}
}
else if (reportIfModified)
{
isValid = _programRom.IsValid;
if (crc != 0)
{
// In some cases, the CRC provided is actually Rom.Crc, so if they match, recompute the CRC.
var cfgCrc = 0u;
isValid = (Rom.Crc == crc) && (crc == GetRefreshedCrcForRom(RomImagePath, RomConfigurationFilePath, out cfgCrc) && (Rom.CfgCrc == cfgCrc));
}
validationState = isValid ? ProgramSupportFileState.PresentAndUnchanged : ProgramSupportFileState.PresentButModified;
}
switch (validationState)
{
case ProgramSupportFileState.PresentAndUnchanged:
case ProgramSupportFileState.None:
// Treat a ROM file's missing or modified state as higher priority to report than peripheral-related information.
// This bit of code is entirely LTO Flash!-specific in its assumptions. If there should ever be other
// peripheral-specific needs to address here, a larger architectural change may be necessary. While the
// language of the states here is neutral, the basis of this check is not.
var rom = programDescription == null ? Rom : programDescription.Rom;
var requiresPeripheral = rom.IsLtoFlashOnlyRom();
if (requiresPeripheral)
{
var isUniversallyCompatible = rom.GetTargetDeviceUniqueId() == LuigiScrambleKeyBlock.AnyLTOFlashId;
var matchesPeripheralInDeviceHistory = isUniversallyCompatible || ((connectedPeripheralsHistory != null) && (connectedPeripheralsHistory.FirstOrDefault(p => p.IsRomCompatible(programDescription)) != null));
var canRunOnConnected = isUniversallyCompatible || ((peripherals != null) && (peripherals.FirstOrDefault(p => p.IsRomCompatible(programDescription)) != null));
if (peripherals == null)
{
// If previous validation state was due to peripheral, retain it, since we don't
// have any peripherals to check against.
if (validationState != previousValidationState)
{
switch (previousValidationState)
{
case ProgramSupportFileState.RequiredPeripheralAvailable:
case ProgramSupportFileState.RequiredPeripheralIncompatible:
case ProgramSupportFileState.RequiredPeripheralNotAttached:
case ProgramSupportFileState.RequiredPeripheralUnknown:
validationState = previousValidationState;
break;
case ProgramSupportFileState.None:
validationState = matchesPeripheralInDeviceHistory ? ProgramSupportFileState.RequiredPeripheralNotAttached : ProgramSupportFileState.RequiredPeripheralUnknown;
break;
default:
// TODO: Decide if the following is a bug:
// 0: Presume a scrambled (unique) LUIGI, no device or device history provided (null)
// 1. Initially ROM's file is missing, but its alternate is found - this caches the 'MissingButAlternateFound' state
// 2. Update ROM to use alternate path as primary path
// 3. Re-validate
// At this point, the "Present and unmodified" state is used -- despite the ROM requiring
// a specific device.
// Why is this considered correct at this time?
// a) When no devices or device history are give (nulls), it's impossible to know. So just use the simple state of he file.
// b) It MAY be a bug that, if we pass in EMPTY peripheral / history lists that we should consider something different... but
// then again, should we report 'unknown peripheral' at that time? Or would reporting 'not attached' be better?
// What about 'universally' scrambled ROMs? Using 'not attached' may be more accurate then as well...
// The case of scrambled ROMs likely needs more careful consideration generally...
break;
}
}
}
else
{
if (peripherals.Any())
{
if (canRunOnConnected)
{
validationState = ProgramSupportFileState.RequiredPeripheralAvailable;
}
else
{
validationState = ProgramSupportFileState.RequiredPeripheralIncompatible;
}
}
else
{
validationState = matchesPeripheralInDeviceHistory ? ProgramSupportFileState.RequiredPeripheralNotAttached : ProgramSupportFileState.RequiredPeripheralUnknown;
}
}
}
break;
default:
break;
}
}
break;
default:
// TODO: Implement remaining validation code.
break;
}
_supportFileStates[whichFile] = validationState;
return(validationState);
}
public void StreamUtilities_RemoveNull_ThrowsArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => StreamUtilities.Remove(null));
}
public override int Read(long pos, byte[] buffer, int offset, int count)
{
if (pos > _inode.FileSize)
{
return(0);
}
uint blockSize = _context.SuperBlock.BlockSize;
int totalRead = 0;
int totalBytesRemaining = (int)Math.Min(count, _inode.FileSize - pos);
while (totalBytesRemaining > 0)
{
uint logicalBlock = (uint)((pos + totalRead) / blockSize);
int blockOffset = (int)(pos + totalRead - logicalBlock * (long)blockSize);
uint physicalBlock = 0;
if (logicalBlock < 12)
{
physicalBlock = _inode.DirectBlocks[logicalBlock];
}
else
{
logicalBlock -= 12;
if (logicalBlock < blockSize / 4)
{
if (_inode.IndirectBlock != 0)
{
_context.RawStream.Position = _inode.IndirectBlock * (long)blockSize + logicalBlock * 4;
byte[] indirectData = StreamUtilities.ReadFully(_context.RawStream, 4);
physicalBlock = EndianUtilities.ToUInt32LittleEndian(indirectData, 0);
}
}
else
{
logicalBlock -= blockSize / 4;
if (logicalBlock < blockSize / 4 * (blockSize / 4))
{
if (_inode.DoubleIndirectBlock != 0)
{
_context.RawStream.Position = _inode.DoubleIndirectBlock * (long)blockSize +
logicalBlock / (blockSize / 4) * 4;
byte[] indirectData = StreamUtilities.ReadFully(_context.RawStream, 4);
uint indirectBlock = EndianUtilities.ToUInt32LittleEndian(indirectData, 0);
if (indirectBlock != 0)
{
_context.RawStream.Position = indirectBlock * (long)blockSize +
logicalBlock % (blockSize / 4) * 4;
StreamUtilities.ReadFully(_context.RawStream, indirectData, 0, 4);
physicalBlock = EndianUtilities.ToUInt32LittleEndian(indirectData, 0);
}
}
}
else
{
throw new NotSupportedException("Triple indirection");
}
}
}
int toRead = (int)Math.Min(totalBytesRemaining, blockSize - blockOffset);
int numRead;
if (physicalBlock == 0)
{
Array.Clear(buffer, offset + totalRead, toRead);
numRead = toRead;
}
else
{
_context.RawStream.Position = physicalBlock * (long)blockSize + blockOffset;
numRead = _context.RawStream.Read(buffer, offset + totalRead, toRead);
}
totalBytesRemaining -= numRead;
totalRead += numRead;
}
return(totalRead);
}
public void StreamUtilitiesWithTestStorage_CallSizeWithNonexistentPath_ThrowsFileNotFoundException()
{
var storage = new TestStorageAccess();
Assert.Throws <FileNotFoundException>(() => StreamUtilities.FileSize(@"SomeBogusPathThatHasNoSize", storage));
}
/// <summary>
/// Write *to* this stream *from* the source stream in a buffered manner analogous to Write()
/// </summary>
/// <param name="sourceStream">Stream get data from</param>
public void BufferedWrite(Stream sourceStream)
{
StreamUtilities.BufferedStreamCopy(sourceStream, this);
}
private static uint ReadDigest(Stream stream)
{
byte[] data = StreamUtilities.ReadFully(stream, 4);
return(EndianUtilities.ToUInt32BigEndian(data, 0));
}
private void DoCheck()
{
_context.RawStream.Position = 0;
byte[] bytes = StreamUtilities.ReadFully(_context.RawStream, 512);
_context.BiosParameterBlock = BiosParameterBlock.FromBytes(bytes, 0);
//-----------------------------------------------------------------------
// MASTER FILE TABLE
//
// Bootstrap the Master File Table
_context.Mft = new MasterFileTable(_context);
File mftFile = new File(_context, _context.Mft.GetBootstrapRecord());
// Verify basic MFT records before initializing the Master File Table
PreVerifyMft(mftFile);
_context.Mft.Initialize(mftFile);
// Now the MFT is up and running, do more detailed analysis of it's contents - double-accounted clusters, etc
VerifyMft();
_context.Mft.Dump(_report, "INFO: ");
//-----------------------------------------------------------------------
// INDEXES
//
// Need UpperCase in order to verify some indexes (i.e. directories).
File ucFile = new File(_context, _context.Mft.GetRecord(MasterFileTable.UpCaseIndex, false));
_context.UpperCase = new UpperCase(ucFile);
SelfCheckIndexes();
//-----------------------------------------------------------------------
// DIRECTORIES
//
VerifyDirectories();
//-----------------------------------------------------------------------
// WELL KNOWN FILES
//
VerifyWellKnownFilesExist();
//-----------------------------------------------------------------------
// OBJECT IDS
//
VerifyObjectIds();
//-----------------------------------------------------------------------
// FINISHED
//
// Temporary...
using (NtfsFileSystem fs = new NtfsFileSystem(_context.RawStream))
{
if ((_reportLevels & ReportLevels.Information) != 0)
{
ReportDump(fs);
}
}
}