private void GetFileNumber()
{
this.archiveStream.Seek(24L, SeekOrigin.Begin);
byte[] numArray = new byte[4];
this.archiveStream.Read(numArray, 0, numArray.Length);
this.totalNumberOfFiles = (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 0L);
}
/// <summary>
/// Set the alleged number of files in the archive
/// </summary>
void GetFileNumber()
{
archiveStream.Seek(24, SeekOrigin.Begin);
byte[] buffer = new byte[4];
archiveStream.Read(buffer, 0, buffer.Length);
totalNumberOfFiles = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 0);
}
public MYPHandler(string filename, del_FileTableEventHandler eventHandler_FileTable, del_FileEventHandler eventHandler_Extraction, HashDictionary hashDic)
{
// Try to set ramCounter to the performance counter but if it fails set it to null to default getUsedRAM() to 0
try
{
ramCounter = new PerformanceCounter("Process", "Private Bytes", Process.GetCurrentProcess().ProcessName);
}
catch
{
ramCounter = null;
}
this.hashDictionary = hashDic;
if (eventHandler_Extraction != null)
{
this.event_Extraction += eventHandler_Extraction;
}
if (eventHandler_FileTable != null)
{
this.event_FileTable += eventHandler_FileTable;
}
this.currentMypFileName = filename.Substring(filename.LastIndexOf('\\') + 1, filename.Length - filename.LastIndexOf('\\') - 1);
this.currentMypFileName = this.currentMypFileName.Split('.')[0];
this.fullMypFileName = filename;
this.mypPath = filename.LastIndexOf('\\') < 0 ? "" : filename.Substring(0, filename.LastIndexOf('\\'));
this.pattern = "*";
this.unCompressedSize = 0L;
this.numberOfFileNamesFound = 0L;
this.totalNumberOfFiles = 0L;
this.numberOfFilesFound = 0L;
this.error_FileEntryNumber = 0L;
this.error_ExtractionNumber = 0L;
this.archiveStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
this.archiveStream.Seek(12L, SeekOrigin.Begin);
byte[] numArray = new byte[8];
this.archiveStream.Read(numArray, 0, numArray.Length);
this.tableStart = (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 0L);
this.tableStart += (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 4L) << 32;
this.GetFileNumber();
this.oSearcher = new ManagementObjectSearcher(this.oMs, this.oQuery);
this.oReturnCollection = this.oSearcher.Get();
foreach (ManagementBaseObject oReturn in this.oReturnCollection)
{
this.totalMemory += Convert.ToDouble(oReturn["Capacity"]);
}
if (this.totalMemory > this.programMemory)
{
return;
}
this.programMemory = this.totalMemory / 2.0;
}
/// <summary>
/// Creates a new myp worker
/// </summary>
/// <param name="filename">the name of the file to work with</param>
/// <param name="event_FileTable">method to treat events return when reading the file table</param>
/// <param name="event_Extraction">method to treat events return when extracting files</param>
/// <param name="hasher">the dictionnary</param>
public MYPHandler(string filename
, del_FileTableEventHandler eventHandler_FileTable
, del_FileEventHandler eventHandler_Extraction
, HashDictionary hashDic)
{
this.hashDictionary = hashDic;
if (eventHandler_Extraction != null)
{
this.event_Extraction += eventHandler_Extraction;
}
if (eventHandler_FileTable != null)
{
this.event_FileTable += eventHandler_FileTable;
}
//parse the filename to get the path
this.currentMypFileName = filename.Substring(filename.LastIndexOf('\\') + 1, filename.Length - filename.LastIndexOf('\\') - 1);
this.currentMypFileName = currentMypFileName.Split('.')[0];
this.fullMypFileName = filename;
if (filename.LastIndexOf('\\') >= 0)
{
this.mypPath = filename.Substring(0, filename.LastIndexOf('\\'));
}
else
{
this.mypPath = "";
}
//Initialize some data
pattern = "*";
unCompressedSize = 0;
numberOfFileNamesFound = 0;
totalNumberOfFiles = 0;
numberOfFilesFound = 0;
error_FileEntryNumber = 0;
error_ExtractionNumber = 0;
//open the archive file
archiveStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
//read the position of the starting file table
archiveStream.Seek(0x0C, SeekOrigin.Begin);
byte[] buffer = new byte[8];
archiveStream.Read(buffer, 0, buffer.Length);
tableStart = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 0);
tableStart += ((long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 4)) << 32;
GetFileNumber();
}
public FileInArchiveDescriptor(byte[] buffer)
{
this.startingPosition = (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 0L);
this.startingPosition += (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 4L) << 32;
this.fileHeaderSize = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 8L);
this.compressedSize = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 12L);
this.uncompressedSize = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 16L);
Array.Copy((Array)buffer, 20, (Array)this.file_hash, 0, 8);
this.sh = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 20L);
this.ph = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 24L);
this.crc = BitConverter.ToInt32(buffer, 28);
this.filename += string.Format("{0:X8}", (object)this.crc);
this.filename += "_";
this.filename += string.Format("{0:X16}", (object)BitConverter.ToInt64(this.file_hash, 0));
this.compressionMethod = buffer[32];
this.isCompressed = (int)this.compressionMethod != 0;
}
/// <summary>
/// Parse the source file and reads the file table entries
/// Raises according event depending on result
/// </summary>
public void GetFileTable()
{
error_FileEntryNumber = 0;
error_ExtractionNumber = 0;
unCompressedSize = 0;
numberOfFileNamesFound = 0;
numberOfFilesFound = 0;
//Init
long currentReadingPosition;
uint numberOfFileInTable = 0;
long endOfTableAddress;
byte[] bufferTableHeader = new byte[12];
byte[] bufferFileDesc = new byte[FileInArchiveDescriptor.fileDescriptorSize];
FileInArchive myArchFile;
while (tableStart != 0)
{
archiveStream.Seek(tableStart, SeekOrigin.Begin);
archiveStream.Read(bufferTableHeader, 0, bufferTableHeader.Length);
numberOfFileInTable = FileInArchiveDescriptor.convertLittleEndianBufferToInt(bufferTableHeader, 0); //get number of files
currentReadingPosition = tableStart + 12;
endOfTableAddress = tableStart + 12 + (long)FileInArchiveDescriptor.fileDescriptorSize * (long)numberOfFileInTable; // calculates the end address
tableStart = FileInArchiveDescriptor.convertLittleEndianBufferToInt(bufferTableHeader, 4); //find the next filetable
tableStart += (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(bufferTableHeader, 8) << 32; //mostly 0
#region File Table Read
while (currentReadingPosition < endOfTableAddress)
{
archiveStream.Seek(currentReadingPosition, SeekOrigin.Begin);
archiveStream.Read(bufferFileDesc, 0, bufferFileDesc.Length);
myArchFile = new FileInArchive();
myArchFile.descriptor = new FileInArchiveDescriptor(bufferFileDesc);
myArchFile.descriptor.fileTableEntryPosition = currentReadingPosition;
if (myArchFile.descriptor.startingPosition > 0 &&
myArchFile.descriptor.compressedSize > 0 &&
myArchFile.descriptor.uncompressedSize > 0 //If the compressed size is 0, then there is no file
)
{
//Search for the filename
HashData ffn = null;
if (hashDictionary != null)
{
ffn = hashDictionary.SearchHashList(myArchFile.descriptor.ph, myArchFile.descriptor.sh);
if (ffn != null && ffn.filename != "")
{
myArchFile.descriptor.foundFileName = true;
myArchFile.descriptor.filename = ffn.filename;
if (myArchFile.descriptor.crc != ffn.crc)
{
myArchFile.State = FileInArchiveState.MODIFIED;
hashDictionary.UpdateCRC(myArchFile.descriptor.ph, myArchFile.descriptor.sh, myArchFile.descriptor.crc);
archiveModifiedFileList.Add(myArchFile);
}
numberOfFileNamesFound++;
int dotpos = myArchFile.descriptor.filename.LastIndexOf('.');
myArchFile.descriptor.extension = myArchFile.descriptor.filename.Substring(dotpos + 1);
}
else
{
if (ffn == null)
{
myArchFile.State = FileInArchiveState.NEW;
hashDictionary.AddHash(myArchFile.descriptor.ph, myArchFile.descriptor.sh, "", myArchFile.descriptor.crc);
archiveNewFileList.Add(myArchFile);
}
else if (myArchFile.descriptor.crc != ffn.crc)
{
myArchFile.State = FileInArchiveState.MODIFIED;
hashDictionary.UpdateCRC(myArchFile.descriptor.ph, myArchFile.descriptor.sh, myArchFile.descriptor.crc);
archiveModifiedFileList.Add(myArchFile);
}
//Retrieve header
myArchFile.metadata = new byte[myArchFile.descriptor.fileHeaderSize];
archiveStream.Seek(myArchFile.descriptor.startingPosition, SeekOrigin.Begin);
archiveStream.Read(myArchFile.metadata, 0, myArchFile.metadata.Length);
//Retrieve head of the data for extension definition purpose
if (!myArchFile.descriptor.foundFileName)
{
if (myArchFile.descriptor.compressedSize < myArchFile.data_start_200.Length)
{
myArchFile.data_start_200 = new byte[myArchFile.descriptor.compressedSize];
}
archiveStream.Seek(myArchFile.descriptor.startingPosition + myArchFile.descriptor.fileHeaderSize, SeekOrigin.Begin);
archiveStream.Read(myArchFile.data_start_200, 0, myArchFile.data_start_200.Length);
try
{
TreatHeader(myArchFile);
}
catch
{
Error_FileTableEntry(myArchFile);
}
}
}
//weird Wildcard match.
//Updates the table
try
{
numberOfFilesFound++;
if (WildcardMatch(pattern, myArchFile.Filename))
{
archiveFileList.Add(myArchFile);
unCompressedSize += myArchFile.descriptor.uncompressedSize;
/// \todo Speed: we should do something here to avoid passing an event for each and every file....
TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.NewFile, myArchFile));
}
else
{
TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.UpdateFile, null));
}
}
catch
{
Error_FileTableEntry(myArchFile);
}
}
}
else
{
//FileTableEntryError(myArchFile);
}
currentReadingPosition += FileInArchiveDescriptor.fileDescriptorSize;
} // currentReadingPosition < endOfTableAddress
#endregion
} //tableStart != 0
TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.Finished, null));
}
/// <summary>
/// Creates a new myp worker
/// </summary>
/// <param name="filename">the name of the file to work with</param>
/// <param name="event_FileTable">method to treat events return when reading the file table</param>
/// <param name="event_Extraction">method to treat events return when extracting files</param>
/// <param name="hasher">the dictionnary</param>
public MYPHandler(string filename
, del_FileTableEventHandler eventHandler_FileTable
, del_FileEventHandler eventHandler_Extraction
, HashDictionary hashDic)
{
this.hashDictionary = hashDic;
if (eventHandler_Extraction != null)
{
this.event_Extraction += eventHandler_Extraction;
}
if (eventHandler_FileTable != null)
{
this.event_FileTable += eventHandler_FileTable;
}
//parse the filename to get the path
this.currentMypFileName = filename.Substring(filename.LastIndexOf('\\') + 1, filename.Length - filename.LastIndexOf('\\') - 1);
this.currentMypFileName = currentMypFileName.Split('.')[0];
this.fullMypFileName = filename;
if (filename.LastIndexOf('\\') >= 0)
{
this.mypPath = filename.Substring(0, filename.LastIndexOf('\\'));
}
else
{
this.mypPath = "";
}
//Initialize some data
pattern = "*";
unCompressedSize = 0;
numberOfFileNamesFound = 0;
totalNumberOfFiles = 0;
numberOfFilesFound = 0;
error_FileEntryNumber = 0;
error_ExtractionNumber = 0;
//open the archive file
archiveStream = new FileStream(filename, FileMode.Open, FileAccess.Read);
//read the position of the starting file table
archiveStream.Seek(0x0C, SeekOrigin.Begin);
byte[] buffer = new byte[8];
archiveStream.Read(buffer, 0, buffer.Length);
tableStart = FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 0);
tableStart += ((long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(buffer, 4)) << 32;
GetFileNumber();
//get the total memory available
#region System Memory Management
oSearcher = new ManagementObjectSearcher(oMs, oQuery);
oReturnCollection = oSearcher.Get();
foreach (ManagementObject oReturn in oReturnCollection)
{
totalMemory += Convert.ToDouble(oReturn["Capacity"]);
}
if (totalMemory <= programMemory)
{
programMemory = totalMemory / 2; //Security
}
#endregion
}
public void GetFileTable()
{
this.error_FileEntryNumber = 0L;
this.error_ExtractionNumber = 0L;
this.unCompressedSize = 0L;
this.numberOfFileNamesFound = 0L;
this.numberOfFilesFound = 0L;
byte[] numArray = new byte[12];
byte[] buffer = new byte[FileInArchiveDescriptor.fileDescriptorSize];
while (this.tableStart != 0L)
{
this.archiveStream.Seek(this.tableStart, SeekOrigin.Begin);
this.archiveStream.Read(numArray, 0, numArray.Length);
uint num1 = FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 0L);
long offset = this.tableStart + 12L;
long num2 = this.tableStart + 12L + (long)FileInArchiveDescriptor.fileDescriptorSize * (long)num1;
this.tableStart = (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 4L);
this.tableStart += (long)FileInArchiveDescriptor.convertLittleEndianBufferToInt(numArray, 8L) << 32;
while (offset < num2)
{
this.archiveStream.Seek(offset, SeekOrigin.Begin);
this.archiveStream.Read(buffer, 0, buffer.Length);
FileInArchive archFile = new FileInArchive();
archFile.descriptor = new FileInArchiveDescriptor(buffer);
archFile.sourceFileName = this.fullMypFileName;
archFile.descriptor.fileTableEntryPosition = offset;
if (archFile.descriptor.startingPosition > 0L && archFile.descriptor.compressedSize > 0U && archFile.descriptor.uncompressedSize > 0U)
{
if (this.hashDictionary != null)
{
HashData hashData = this.hashDictionary.SearchHashList(archFile.descriptor.ph, archFile.descriptor.sh);
if (hashData != null && (string)hashData.filename != "")
{
archFile.descriptor.foundFileName = true;
archFile.descriptor.filename = (string)hashData.filename;
if (archFile.descriptor.crc != hashData.crc)
{
archFile.State = FileInArchiveState.MODIFIED;
this.hashDictionary.UpdateCRC(archFile.descriptor.ph, archFile.descriptor.sh, archFile.descriptor.crc);
this.archiveModifiedFileList.Add(archFile);
}
++this.numberOfFileNamesFound;
int num3 = archFile.descriptor.filename.LastIndexOf('.');
archFile.descriptor.extension = archFile.descriptor.filename.Substring(num3 + 1);
}
else
{
if (hashData == null)
{
archFile.State = FileInArchiveState.NEW;
this.hashDictionary.AddHash(archFile.descriptor.ph, archFile.descriptor.sh, "", archFile.descriptor.crc);
this.archiveNewFileList.Add(archFile);
}
else if (archFile.descriptor.crc != hashData.crc)
{
archFile.State = FileInArchiveState.MODIFIED;
this.hashDictionary.UpdateCRC(archFile.descriptor.ph, archFile.descriptor.sh, archFile.descriptor.crc);
this.archiveModifiedFileList.Add(archFile);
}
archFile.metadata = new byte[archFile.descriptor.fileHeaderSize];
this.archiveStream.Seek(archFile.descriptor.startingPosition, SeekOrigin.Begin);
this.archiveStream.Read(archFile.metadata, 0, archFile.metadata.Length);
if (!archFile.descriptor.foundFileName)
{
if ((long)archFile.descriptor.compressedSize < (long)archFile.data_start_200.Length)
{
archFile.data_start_200 = new byte[archFile.descriptor.compressedSize];
}
this.archiveStream.Seek(archFile.descriptor.startingPosition + (long)archFile.descriptor.fileHeaderSize, SeekOrigin.Begin);
this.archiveStream.Read(archFile.data_start_200, 0, archFile.data_start_200.Length);
try
{
this.TreatHeader(archFile);
}
catch (Exception ex)
{
this.Error_FileTableEntry(archFile);
}
}
}
try
{
++this.numberOfFilesFound;
if (this.WildcardMatch(this.pattern, archFile.Filename))
{
this.archiveFileList.Add(archFile);
this.unCompressedSize += (long)archFile.descriptor.uncompressedSize;
this.TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.NewFile, archFile));
}
else
{
this.TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.UpdateFile, (FileInArchive)null));
}
}
catch (Exception ex)
{
this.Error_FileTableEntry(archFile);
}
}
}
offset += (long)FileInArchiveDescriptor.fileDescriptorSize;
}
}
this.TriggerFileTableEvent(new MYPFileTableEventArgs(Event_FileTableType.Finished, (FileInArchive)null));
}
