/// <summary>
/// Get the binary data representing this instance.
/// </summary>
/// <returns>The raw binary data representing this instance.</returns>
public byte[] GetData()
{
using (MemoryStream ms = new MemoryStream())
using (BlubbZipHelperStream helperStream = new BlubbZipHelperStream(ms)) {
helperStream.IsStreamOwner = false;
helperStream.WriteByte((byte)flags_); // Flags
if ((flags_ & Flags.ModificationTime) != 0)
{
TimeSpan span = modificationTime_.ToUniversalTime() - new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt(seconds);
}
if ((flags_ & Flags.AccessTime) != 0)
{
TimeSpan span = lastAccessTime_.ToUniversalTime() - new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt(seconds);
}
if ((flags_ & Flags.CreateTime) != 0)
{
TimeSpan span = createTime_.ToUniversalTime() - new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt(seconds);
}
return(ms.ToArray());
}
}
/// <summary>
/// Set the data from the raw values provided.
/// </summary>
/// <param name="data">The raw data to extract values from.</param>
/// <param name="index">The index to start extracting values from.</param>
/// <param name="count">The number of bytes available.</param>
public void SetData(byte[] data, int index, int count)
{
using (MemoryStream ms = new MemoryStream(data, index, count, false))
using (BlubbZipHelperStream helperStream = new BlubbZipHelperStream(ms)) {
helperStream.ReadLEInt(); // Reserved
while (helperStream.Position < helperStream.Length)
{
int ntfsTag = helperStream.ReadLEShort();
int ntfsLength = helperStream.ReadLEShort();
if (ntfsTag == 1)
{
if (ntfsLength >= 24)
{
long lastModificationTicks = helperStream.ReadLELong();
lastModificationTime_ = DateTime.FromFileTime(lastModificationTicks);
long lastAccessTicks = helperStream.ReadLELong();
lastAccessTime_ = DateTime.FromFileTime(lastAccessTicks);
long createTimeTicks = helperStream.ReadLELong();
createTime_ = DateTime.FromFileTime(createTimeTicks);
}
break;
}
else
{
// An unknown NTFS tag so simply skip it.
helperStream.Seek(ntfsLength, SeekOrigin.Current);
}
}
}
}
/// <summary>
/// Set the data from the raw values provided.
/// </summary>
/// <param name="data">The raw data to extract values from.</param>
/// <param name="index">The index to start extracting values from.</param>
/// <param name="count">The number of bytes available.</param>
public void SetData(byte[] data, int index, int count)
{
using (MemoryStream ms = new MemoryStream(data, index, count, false))
using (BlubbZipHelperStream helperStream = new BlubbZipHelperStream(ms)) {
// bit 0 if set, modification time is present
// bit 1 if set, access time is present
// bit 2 if set, creation time is present
flags_ = (Flags)helperStream.ReadByte();
if (((flags_ & Flags.ModificationTime) != 0) && (count >= 5))
{
int iTime = helperStream.ReadLEInt();
modificationTime_ = (new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() +
new TimeSpan(0, 0, 0, iTime, 0)).ToLocalTime();
}
if ((flags_ & Flags.AccessTime) != 0)
{
int iTime = helperStream.ReadLEInt();
lastAccessTime_ = (new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() +
new TimeSpan(0, 0, 0, iTime, 0)).ToLocalTime();
}
if ((flags_ & Flags.CreateTime) != 0)
{
int iTime = helperStream.ReadLEInt();
createTime_ = (new System.DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() +
new TimeSpan(0, 0, 0, iTime, 0)).ToLocalTime();
}
}
}
/// <summary>
/// Get the binary data representing this instance.
/// </summary>
/// <returns>The raw binary data representing this instance.</returns>
public byte[] GetData()
{
using (MemoryStream ms = new MemoryStream())
using (BlubbZipHelperStream helperStream = new BlubbZipHelperStream(ms)) {
helperStream.IsStreamOwner = false;
helperStream.WriteLEInt(0); // Reserved
helperStream.WriteLEShort(1); // Tag
helperStream.WriteLEShort(24); // Length = 3 x 8.
helperStream.WriteLELong(lastModificationTime_.ToFileTime());
helperStream.WriteLELong(lastAccessTime_.ToFileTime());
helperStream.WriteLELong(createTime_.ToFileTime());
return(ms.ToArray());
}
}
/// <summary>
/// Test an archive for integrity/validity
/// </summary>
/// <param name="testData">Perform low level data Crc check</param>
/// <param name="strategy">The <see cref="TestStrategy"></see> to apply.</param>
/// <param name="resultHandler">The <see cref="BlubbTestResultHandler"></see> handler to call during testing.</param>
/// <returns>true if all tests pass, false otherwise</returns>
/// <exception cref="ObjectDisposedException">The object has already been closed.</exception>
public bool TestArchive( bool testData, TestStrategy strategy, BlubbTestResultHandler resultHandler ) {
if( isDisposed_ ) {
throw new ObjectDisposedException( "BlubbFile" );
}
TestStatus status = new TestStatus( this );
if( resultHandler != null ) {
resultHandler( status, null );
}
HeaderTest test = testData ? ( HeaderTest.Header | HeaderTest.Extract ) : HeaderTest.Header;
bool testing = true;
try {
int entryIndex = 0;
while( testing && ( entryIndex < Count ) ) {
if( resultHandler != null ) {
status.SetEntry( this[ entryIndex ] );
status.SetOperation( TestOperation.EntryHeader );
resultHandler( status, null );
}
try {
TestLocalHeader( this[ entryIndex ], test );
} catch( BlubbZipException ex ) {
status.AddError();
if( resultHandler != null ) {
resultHandler( status,
string.Format( "Exception during test - '{0}'", ex.Message ) );
}
if( strategy == TestStrategy.FindFirstError ) {
testing = false;
}
}
if( testing && testData && this[ entryIndex ].IsFile ) {
if( resultHandler != null ) {
status.SetOperation( TestOperation.EntryData );
resultHandler( status, null );
}
Crc32 crc = new Crc32();
using( Stream entryStream = this.GetInputStream( this[ entryIndex ] ) ) {
byte[] buffer = new byte[ 4096 ];
long totalBytes = 0;
int bytesRead;
while( ( bytesRead = entryStream.Read( buffer, 0, buffer.Length ) ) > 0 ) {
crc.Update( buffer, 0, bytesRead );
if( resultHandler != null ) {
totalBytes += bytesRead;
status.SetBytesTested( totalBytes );
resultHandler( status, null );
}
}
}
if( this[ entryIndex ].Crc != crc.Value ) {
status.AddError();
if( resultHandler != null ) {
resultHandler( status, "CRC mismatch" );
}
if( strategy == TestStrategy.FindFirstError ) {
testing = false;
}
}
if( ( this[ entryIndex ].Flags & (int)GeneralBitFlags.Descriptor ) != 0 ) {
BlubbZipHelperStream helper = new BlubbZipHelperStream( baseStream_ );
DescriptorData data = new DescriptorData();
helper.ReadDataDescriptor( this[ entryIndex ].LocalHeaderRequiresBlubb64, data );
if( this[ entryIndex ].Crc != data.Crc ) {
status.AddError();
}
if( this[ entryIndex ].CompressedSize != data.CompressedSize ) {
status.AddError();
}
if( this[ entryIndex ].Size != data.Size ) {
status.AddError();
}
}
}
if( resultHandler != null ) {
status.SetOperation( TestOperation.EntryComplete );
resultHandler( status, null );
}
entryIndex += 1;
}
if( resultHandler != null ) {
status.SetOperation( TestOperation.MiscellaneousTests );
resultHandler( status, null );
}
// TODO: the 'Corrina Johns' test where local headers are missing from
// the central directory. They are therefore invisible to many archivers.
} catch( Exception ex ) {
status.AddError();
if( resultHandler != null ) {
resultHandler( status, string.Format( "Exception during test - '{0}'", ex.Message ) );
}
}
if( resultHandler != null ) {
status.SetOperation( TestOperation.Complete );
status.SetEntry( null );
resultHandler( status, null );
}
return ( status.ErrorCount == 0 );
}
// NOTE this returns the offset of the first byte after the signature.
long LocateBlockWithSignature( int signature, long endLocation, int minimumBlockSize, int maximumVariableData ) {
using( BlubbZipHelperStream les = new BlubbZipHelperStream( baseStream_ ) ) {
return les.LocateBlockWithSignature( signature, endLocation, minimumBlockSize, maximumVariableData );
}
}
void RunUpdates() {
long sizeEntries = 0;
long endOfStream = 0;
bool allOk = true;
bool directUpdate = false;
long destinationPosition = 0; // NOT SFX friendly
BlubbZipFile workFile;
if( IsNewArchive ) {
workFile = this;
workFile.baseStream_.Position = 0;
directUpdate = true;
} else if( archiveStorage_.UpdateMode == FileUpdateMode.Direct ) {
workFile = this;
workFile.baseStream_.Position = 0;
directUpdate = true;
// Sort the updates by offset within copies/modifies, then adds.
// This ensures that data required by copies will not be overwritten.
updates_.Sort( new UpdateComparer() );
} else {
workFile = BlubbZipFile.Create( archiveStorage_.GetTemporaryOutput() );
workFile.UseBlubb64 = UseBlubb64;
if( key != null ) {
workFile.key = (byte[])key.Clone();
}
}
try {
foreach( BlubbUpdate update in updates_ ) {
if( update != null ) {
switch( update.Command ) {
case UpdateCommand.Copy:
if( directUpdate ) {
CopyEntryDirect( workFile, update, ref destinationPosition );
} else {
CopyEntry( workFile, update );
}
break;
case UpdateCommand.Modify:
// TODO: Direct modifying of an entry will take some legwork.
ModifyEntry( workFile, update );
break;
case UpdateCommand.Add:
if( !IsNewArchive && directUpdate ) {
workFile.baseStream_.Position = destinationPosition;
}
AddEntry( workFile, update );
if( directUpdate ) {
destinationPosition = workFile.baseStream_.Position;
}
break;
}
}
}
if( !IsNewArchive && directUpdate ) {
workFile.baseStream_.Position = destinationPosition;
}
long centralDirOffset = workFile.baseStream_.Position;
foreach( BlubbUpdate update in updates_ ) {
if( update != null ) {
sizeEntries += workFile.WriteCentralDirectoryHeader( update.OutEntry );
}
}
byte[] theComment = ( newComment_ != null ) ? newComment_.RawComment : BlubbZipConstants.ConvertToArray( comment_ );
using( BlubbZipHelperStream zhs = new BlubbZipHelperStream( workFile.baseStream_ ) ) {
zhs.WriteEndOfCentralDirectory( updateCount_, sizeEntries, centralDirOffset, theComment );
}
endOfStream = workFile.baseStream_.Position;
// And now patch entries...
foreach( BlubbUpdate update in updates_ ) {
if( update != null ) {
// If the size of the entry is zero leave the crc as 0 as well.
// The calculated crc will be all bits on...
if( ( update.CrcPatchOffset > 0 ) && ( update.OutEntry.CompressedSize > 0 ) ) {
workFile.baseStream_.Position = update.CrcPatchOffset;
workFile.WriteLEInt( (int)update.OutEntry.Crc );
}
if( update.SizePatchOffset > 0 ) {
workFile.baseStream_.Position = update.SizePatchOffset;
if( update.OutEntry.LocalHeaderRequiresBlubb64 ) {
workFile.WriteLeLong( update.OutEntry.Size );
workFile.WriteLeLong( update.OutEntry.CompressedSize );
} else {
workFile.WriteLEInt( (int)update.OutEntry.CompressedSize );
workFile.WriteLEInt( (int)update.OutEntry.Size );
}
}
}
}
} catch( Exception ) {
allOk = false;
} finally {
if( directUpdate ) {
if( allOk ) {
workFile.baseStream_.Flush();
workFile.baseStream_.SetLength( endOfStream );
}
} else {
workFile.Close();
}
}
if( allOk ) {
if( directUpdate ) {
isNewArchive_ = false;
workFile.baseStream_.Flush();
ReadEntries();
} else {
baseStream_.Close();
Reopen( archiveStorage_.ConvertTemporaryToFinal() );
}
} else {
workFile.Close();
if( !directUpdate && ( workFile.Name != null ) ) {
File.Delete( workFile.Name );
}
}
}
void UpdateCommentOnly() {
long baseLength = baseStream_.Length;
BlubbZipHelperStream updateFile = null;
if( archiveStorage_.UpdateMode == FileUpdateMode.Safe ) {
Stream copyStream = archiveStorage_.MakeTemporaryCopy( baseStream_ );
updateFile = new BlubbZipHelperStream( copyStream );
updateFile.IsStreamOwner = true;
baseStream_.Close();
baseStream_ = null;
} else {
if( archiveStorage_.UpdateMode == FileUpdateMode.Direct ) {
// TODO: archiveStorage wasnt originally intended for this use.
// Need to revisit this to tidy up handling as archive storage currently doesnt
// handle the original stream well.
// The problem is when using an existing blubb archive with an in memory archive storage.
// The open stream wont support writing but the memory storage should open the same file not an in memory one.
// Need to tidy up the archive storage interface and contract basically.
baseStream_ = archiveStorage_.OpenForDirectUpdate( baseStream_ );
updateFile = new BlubbZipHelperStream( baseStream_ );
} else {
baseStream_.Close();
baseStream_ = null;
updateFile = new BlubbZipHelperStream( Name );
}
}
using( updateFile ) {
long locatedCentralDirOffset =
updateFile.LocateBlockWithSignature( BlubbZipConstants.EndOfCentralDirectorySignature,
baseLength, BlubbZipConstants.EndOfCentralRecordBaseSize, 0xffff );
if( locatedCentralDirOffset < 0 ) {
throw new BlubbZipException( "Cannot find central directory" );
}
const int CentralHeaderCommentSizeOffset = 16;
updateFile.Position += CentralHeaderCommentSizeOffset;
byte[] rawComment = newComment_.RawComment;
updateFile.WriteLEShort( rawComment.Length );
updateFile.Write( rawComment, 0, rawComment.Length );
updateFile.SetLength( updateFile.Position );
}
if( archiveStorage_.UpdateMode == FileUpdateMode.Safe ) {
Reopen( archiveStorage_.ConvertTemporaryToFinal() );
} else {
ReadEntries();
}
}
void AddEntry( BlubbZipFile workFile, BlubbUpdate update ) {
Stream source = null;
if( update.Entry.IsFile ) {
source = update.GetSource();
if( source == null ) {
source = updateDataSource_.GetSource( update.Entry, update.Filename );
}
}
if( source != null ) {
using( source ) {
long sourceStreamLength = source.Length;
if( update.OutEntry.Size < 0 ) {
update.OutEntry.Size = sourceStreamLength;
} else {
// Check for errant entries.
if( update.OutEntry.Size != sourceStreamLength ) {
throw new BlubbZipException( "Entry size/stream size mismatch" );
}
}
workFile.WriteLocalEntryHeader( update );
long dataStart = workFile.baseStream_.Position;
using( Stream output = workFile.GetOutputStream( update.OutEntry ) ) {
CopyBytes( update, output, source, sourceStreamLength, true );
}
long dataEnd = workFile.baseStream_.Position;
update.OutEntry.CompressedSize = dataEnd - dataStart;
if( ( update.OutEntry.Flags & (int)GeneralBitFlags.Descriptor ) == (int)GeneralBitFlags.Descriptor ) {
BlubbZipHelperStream helper = new BlubbZipHelperStream( workFile.baseStream_ );
helper.WriteDataDescriptor( update.OutEntry );
}
}
} else {
workFile.WriteLocalEntryHeader( update );
update.OutEntry.CompressedSize = 0;
}
}
/// <summary>
/// Commit current updates, updating this archive.
/// </summary>
/// <seealso cref="BeginUpdate()"></seealso>
/// <seealso cref="AbortUpdate"></seealso>
/// <exception cref="ObjectDisposedException">BlubbFile has been closed.</exception>
public void CommitUpdate() {
if( isDisposed_ ) {
throw new ObjectDisposedException( "BlubbFile" );
}
CheckUpdating();
try {
updateIndex_.Clear();
updateIndex_ = null;
if( contentsEdited_ ) {
RunUpdates();
} else if( commentEdited_ ) {
UpdateCommentOnly();
} else {
// Create an empty archive if none existed originally.
if( entries_.Length == 0 ) {
byte[] theComment = ( newComment_ != null ) ? newComment_.RawComment : BlubbZipConstants.ConvertToArray( comment_ );
using( BlubbZipHelperStream zhs = new BlubbZipHelperStream( baseStream_ ) ) {
zhs.WriteEndOfCentralDirectory( 0, 0, 0, theComment );
}
}
}
} finally {
PostUpdateCleanup();
}
}
/// <summary>
/// Finishes the stream. This will write the central directory at the
/// end of the blubb file and flush the stream.
/// </summary>
/// <remarks>
/// This is automatically called when the stream is closed.
/// </remarks>
/// <exception cref="System.IO.IOException">
/// An I/O error occurs.
/// </exception>
/// <exception cref="BlubbException">
/// Comment exceeds the maximum length<br/>
/// Entry name exceeds the maximum length
/// </exception>
public override void Finish()
{
if (entries == null)
{
return;
}
if (curEntry != null)
{
CloseEntry();
}
long numEntries = entries.Count;
long sizeEntries = 0;
foreach (BlubbZipEntry entry in entries)
{
WriteLeInt(BlubbZipConstants.CentralHeaderSignature);
WriteLeShort(BlubbZipConstants.VersionMadeBy);
WriteLeShort(entry.Version);
WriteLeShort(entry.Flags);
WriteLeShort((short)entry.CompressionMethod);
WriteLeInt((int)entry.DosTime);
WriteLeInt((int)entry.Crc);
if (entry.IsBlubb64Forced() ||
(entry.CompressedSize >= uint.MaxValue))
{
WriteLeInt(-1);
}
else
{
WriteLeInt((int)entry.CompressedSize);
}
if (entry.IsBlubb64Forced() ||
(entry.Size >= uint.MaxValue))
{
WriteLeInt(-1);
}
else
{
WriteLeInt((int)entry.Size);
}
byte[] name = BlubbZipConstants.ConvertToArray(entry.Flags, entry.Name);
if (name.Length > 0xffff)
{
throw new BlubbZipException("Name too long.");
}
BlubbZipExtraData ed = new BlubbZipExtraData(entry.ExtraData);
if (entry.CentralHeaderRequiresBlubb64)
{
ed.StartNewEntry();
if (entry.IsBlubb64Forced() ||
(entry.Size >= 0xffffffff))
{
ed.AddLeLong(entry.Size);
}
if (entry.IsBlubb64Forced() ||
(entry.CompressedSize >= 0xffffffff))
{
ed.AddLeLong(entry.CompressedSize);
}
if (entry.Offset >= 0xffffffff)
{
ed.AddLeLong(entry.Offset);
}
ed.AddNewEntry(1);
}
else
{
ed.Delete(1);
}
byte[] extra = ed.GetEntryData();
byte[] entryComment =
(entry.Comment != null) ?
BlubbZipConstants.ConvertToArray(entry.Flags, entry.Comment) :
new byte[0];
if (entryComment.Length > 0xffff)
{
throw new BlubbZipException("Comment too long.");
}
WriteLeShort(name.Length);
WriteLeShort(extra.Length);
WriteLeShort(entryComment.Length);
WriteLeShort(0); // disk number
WriteLeShort(0); // internal file attributes
// external file attributes
if (entry.ExternalFileAttributes != -1)
{
WriteLeInt(entry.ExternalFileAttributes);
}
else
{
if (entry.IsDirectory)
{
WriteLeInt(16);
}
else
{
WriteLeInt(0);
}
}
if (entry.Offset >= uint.MaxValue)
{
WriteLeInt(-1);
}
else
{
WriteLeInt((int)entry.Offset);
}
if (name.Length > 0)
{
baseOutputStream_.Write(name, 0, name.Length);
}
if (extra.Length > 0)
{
baseOutputStream_.Write(extra, 0, extra.Length);
}
if (entryComment.Length > 0)
{
baseOutputStream_.Write(entryComment, 0, entryComment.Length);
}
sizeEntries += BlubbZipConstants.CentralHeaderBaseSize + name.Length + extra.Length + entryComment.Length;
}
using (BlubbZipHelperStream zhs = new BlubbZipHelperStream(baseOutputStream_)) {
zhs.WriteEndOfCentralDirectory(numEntries, sizeEntries, offset, blubbComment);
}
entries = null;
}
/// <summary>
/// Finishes the stream. This will write the central directory at the
/// end of the blubb file and flush the stream.
/// </summary>
/// <remarks>
/// This is automatically called when the stream is closed.
/// </remarks>
/// <exception cref="System.IO.IOException">
/// An I/O error occurs.
/// </exception>
/// <exception cref="BlubbException">
/// Comment exceeds the maximum length<br/>
/// Entry name exceeds the maximum length
/// </exception>
public override void Finish() {
if( entries == null ) {
return;
}
if( curEntry != null ) {
CloseEntry();
}
long numEntries = entries.Count;
long sizeEntries = 0;
foreach( BlubbZipEntry entry in entries ) {
WriteLeInt( BlubbZipConstants.CentralHeaderSignature );
WriteLeShort( BlubbZipConstants.VersionMadeBy );
WriteLeShort( entry.Version );
WriteLeShort( entry.Flags );
WriteLeShort( (short)entry.CompressionMethod );
WriteLeInt( (int)entry.DosTime );
WriteLeInt( (int)entry.Crc );
if( entry.IsBlubb64Forced() ||
( entry.CompressedSize >= uint.MaxValue ) ) {
WriteLeInt( -1 );
} else {
WriteLeInt( (int)entry.CompressedSize );
}
if( entry.IsBlubb64Forced() ||
( entry.Size >= uint.MaxValue ) ) {
WriteLeInt( -1 );
} else {
WriteLeInt( (int)entry.Size );
}
byte[] name = BlubbZipConstants.ConvertToArray( entry.Flags, entry.Name );
if( name.Length > 0xffff ) {
throw new BlubbZipException( "Name too long." );
}
BlubbZipExtraData ed = new BlubbZipExtraData( entry.ExtraData );
if( entry.CentralHeaderRequiresBlubb64 ) {
ed.StartNewEntry();
if( entry.IsBlubb64Forced() ||
( entry.Size >= 0xffffffff ) ) {
ed.AddLeLong( entry.Size );
}
if( entry.IsBlubb64Forced() ||
( entry.CompressedSize >= 0xffffffff ) ) {
ed.AddLeLong( entry.CompressedSize );
}
if( entry.Offset >= 0xffffffff ) {
ed.AddLeLong( entry.Offset );
}
ed.AddNewEntry( 1 );
} else {
ed.Delete( 1 );
}
byte[] extra = ed.GetEntryData();
byte[] entryComment =
( entry.Comment != null ) ?
BlubbZipConstants.ConvertToArray( entry.Flags, entry.Comment ) :
new byte[ 0 ];
if( entryComment.Length > 0xffff ) {
throw new BlubbZipException( "Comment too long." );
}
WriteLeShort( name.Length );
WriteLeShort( extra.Length );
WriteLeShort( entryComment.Length );
WriteLeShort( 0 ); // disk number
WriteLeShort( 0 ); // internal file attributes
// external file attributes
if( entry.ExternalFileAttributes != -1 ) {
WriteLeInt( entry.ExternalFileAttributes );
} else {
if( entry.IsDirectory ) {
WriteLeInt( 16 );
} else {
WriteLeInt( 0 );
}
}
if( entry.Offset >= uint.MaxValue ) {
WriteLeInt( -1 );
} else {
WriteLeInt( (int)entry.Offset );
}
if( name.Length > 0 ) {
baseOutputStream_.Write( name, 0, name.Length );
}
if( extra.Length > 0 ) {
baseOutputStream_.Write( extra, 0, extra.Length );
}
if( entryComment.Length > 0 ) {
baseOutputStream_.Write( entryComment, 0, entryComment.Length );
}
sizeEntries += BlubbZipConstants.CentralHeaderBaseSize + name.Length + extra.Length + entryComment.Length;
}
using( BlubbZipHelperStream zhs = new BlubbZipHelperStream( baseOutputStream_ ) ) {
zhs.WriteEndOfCentralDirectory( numEntries, sizeEntries, offset, blubbComment );
}
entries = null;
}
/// <summary>
/// Get the binary data representing this instance.
/// </summary>
/// <returns>The raw binary data representing this instance.</returns>
public byte[] GetData() {
using( MemoryStream ms = new MemoryStream() )
using( BlubbZipHelperStream helperStream = new BlubbZipHelperStream( ms ) ) {
helperStream.IsStreamOwner = false;
helperStream.WriteLEInt( 0 ); // Reserved
helperStream.WriteLEShort( 1 ); // Tag
helperStream.WriteLEShort( 24 ); // Length = 3 x 8.
helperStream.WriteLELong( lastModificationTime_.ToFileTime() );
helperStream.WriteLELong( lastAccessTime_.ToFileTime() );
helperStream.WriteLELong( createTime_.ToFileTime() );
return ms.ToArray();
}
}
/// <summary>
/// Set the data from the raw values provided.
/// </summary>
/// <param name="data">The raw data to extract values from.</param>
/// <param name="index">The index to start extracting values from.</param>
/// <param name="count">The number of bytes available.</param>
public void SetData( byte[] data, int index, int count ) {
using( MemoryStream ms = new MemoryStream( data, index, count, false ) )
using( BlubbZipHelperStream helperStream = new BlubbZipHelperStream( ms ) ) {
helperStream.ReadLEInt(); // Reserved
while( helperStream.Position < helperStream.Length ) {
int ntfsTag = helperStream.ReadLEShort();
int ntfsLength = helperStream.ReadLEShort();
if( ntfsTag == 1 ) {
if( ntfsLength >= 24 ) {
long lastModificationTicks = helperStream.ReadLELong();
lastModificationTime_ = DateTime.FromFileTime( lastModificationTicks );
long lastAccessTicks = helperStream.ReadLELong();
lastAccessTime_ = DateTime.FromFileTime( lastAccessTicks );
long createTimeTicks = helperStream.ReadLELong();
createTime_ = DateTime.FromFileTime( createTimeTicks );
}
break;
} else {
// An unknown NTFS tag so simply skip it.
helperStream.Seek( ntfsLength, SeekOrigin.Current );
}
}
}
}
/// <summary>
/// Get the binary data representing this instance.
/// </summary>
/// <returns>The raw binary data representing this instance.</returns>
public byte[] GetData() {
using( MemoryStream ms = new MemoryStream() )
using( BlubbZipHelperStream helperStream = new BlubbZipHelperStream( ms ) ) {
helperStream.IsStreamOwner = false;
helperStream.WriteByte( (byte)flags_ ); // Flags
if( ( flags_ & Flags.ModificationTime ) != 0 ) {
TimeSpan span = modificationTime_.ToUniversalTime() - new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt( seconds );
}
if( ( flags_ & Flags.AccessTime ) != 0 ) {
TimeSpan span = lastAccessTime_.ToUniversalTime() - new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt( seconds );
}
if( ( flags_ & Flags.CreateTime ) != 0 ) {
TimeSpan span = createTime_.ToUniversalTime() - new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime();
int seconds = (int)span.TotalSeconds;
helperStream.WriteLEInt( seconds );
}
return ms.ToArray();
}
}
/// <summary>
/// Set the data from the raw values provided.
/// </summary>
/// <param name="data">The raw data to extract values from.</param>
/// <param name="index">The index to start extracting values from.</param>
/// <param name="count">The number of bytes available.</param>
public void SetData( byte[] data, int index, int count ) {
using( MemoryStream ms = new MemoryStream( data, index, count, false ) )
using( BlubbZipHelperStream helperStream = new BlubbZipHelperStream( ms ) ) {
// bit 0 if set, modification time is present
// bit 1 if set, access time is present
// bit 2 if set, creation time is present
flags_ = (Flags)helperStream.ReadByte();
if( ( ( flags_ & Flags.ModificationTime ) != 0 ) && ( count >= 5 ) ) {
int iTime = helperStream.ReadLEInt();
modificationTime_ = ( new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime() +
new TimeSpan( 0, 0, 0, iTime, 0 ) ).ToLocalTime();
}
if( ( flags_ & Flags.AccessTime ) != 0 ) {
int iTime = helperStream.ReadLEInt();
lastAccessTime_ = ( new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime() +
new TimeSpan( 0, 0, 0, iTime, 0 ) ).ToLocalTime();
}
if( ( flags_ & Flags.CreateTime ) != 0 ) {
int iTime = helperStream.ReadLEInt();
createTime_ = ( new System.DateTime( 1970, 1, 1, 0, 0, 0 ).ToUniversalTime() +
new TimeSpan( 0, 0, 0, iTime, 0 ) ).ToLocalTime();
}
}
}
