private int CheckSumRead(Stream inStream, FileResults fileResults, ulong totalSize, bool testcrc, bool testDeep)
{
if (_buffer0 == null)
{
_buffer0 = new byte[Buffersize];
_buffer1 = new byte[Buffersize];
}
fileResults.MD5 = null;
fileResults.SHA1 = null;
fileResults.CRC = null;
ThreadReadBuffer lbuffer = null;
ThreadCRC tcrc32 = null;
ThreadMD5 tmd5 = null;
ThreadSHA1 tsha1 = null;
ThreadCRC altCrc32 = null;
ThreadMD5 altMd5 = null;
ThreadSHA1 altSha1 = null;
try
{
int maxHeaderSize = 128;
long sizetogo = (long)totalSize;
int sizenow = maxHeaderSize < sizetogo ? maxHeaderSize : (int)sizetogo;
if (sizenow > 0)
{
inStream.Read(_buffer0, 0, sizenow);
}
fileResults.HeaderFileType = FileHeaderReader.GetType(_buffer0, sizenow, out int actualHeaderSize);
// if the file has no header then just use the main hash checkers.
if (fileResults.HeaderFileType == HeaderFileType.Nothing || actualHeaderSize == 0)
{
// no header found & not reading hashes.
if (!(testcrc || testDeep))
{
return(0);
}
// no header found so just push the initial buffer read into the hash checkers.
// and then continue with the rest of the file.
tcrc32 = new ThreadCRC();
if (testDeep)
{
tmd5 = new ThreadMD5();
tsha1 = new ThreadSHA1();
}
tcrc32.Trigger(_buffer0, sizenow);
tmd5?.Trigger(_buffer0, sizenow);
tsha1?.Trigger(_buffer0, sizenow);
tcrc32.Wait();
tmd5?.Wait();
tsha1?.Wait();
sizetogo -= sizenow;
}
else
{
// header found
fileResults.AltSize = (ulong)((long)totalSize - actualHeaderSize);
//setup main hash checkers
if (testcrc || testDeep)
{
tcrc32 = new ThreadCRC();
}
altCrc32 = new ThreadCRC();
if (testDeep)
{
tmd5 = new ThreadMD5();
tsha1 = new ThreadSHA1();
altMd5 = new ThreadMD5();
altSha1 = new ThreadSHA1();
}
if (sizenow > actualHeaderSize)
{
// Already read more than the header, so we need to split what we read into the 2 hash checkers
// first scan the header part from what we have already read.
// scan what we read so far with just the main hashers
tcrc32?.Trigger(_buffer0, actualHeaderSize);
tmd5?.Trigger(_buffer0, actualHeaderSize);
tsha1?.Trigger(_buffer0, actualHeaderSize);
tcrc32?.Wait();
tmd5?.Wait();
tsha1?.Wait();
// put the rest of what we read into the second buffer, and scan with all hashers
int restSize = sizenow - actualHeaderSize;
for (int i = 0; i < restSize; i++)
{
_buffer1[i] = _buffer0[actualHeaderSize + i];
}
tcrc32?.Trigger(_buffer1, restSize);
tmd5?.Trigger(_buffer1, restSize);
tsha1?.Trigger(_buffer1, restSize);
altCrc32.Trigger(_buffer1, restSize);
altMd5?.Trigger(_buffer1, restSize);
altSha1?.Trigger(_buffer1, restSize);
tcrc32?.Wait();
tmd5?.Wait();
tsha1?.Wait();
altCrc32.Wait();
altMd5?.Wait();
altSha1?.Wait();
sizetogo -= sizenow;
}
else
{
// Read less than the length of the header so read the rest of the header.
// then continue to reader the full rest of the file.
// scan what we read so far
tcrc32?.Trigger(_buffer0, sizenow);
tmd5?.Trigger(_buffer0, sizenow);
tsha1?.Trigger(_buffer0, sizenow);
tcrc32?.Wait();
tmd5?.Wait();
tsha1?.Wait();
sizetogo -= sizenow;
// now read the rest of the header.
sizenow = actualHeaderSize - sizenow;
inStream.Read(_buffer0, 0, sizenow);
// scan the rest of the header
tcrc32?.Trigger(_buffer0, sizenow);
tmd5?.Trigger(_buffer0, sizenow);
tsha1?.Trigger(_buffer0, sizenow);
tcrc32?.Wait();
tmd5?.Wait();
tsha1?.Wait();
sizetogo -= sizenow;
}
}
lbuffer = new ThreadReadBuffer(inStream);
// Pre load the first buffer0
int sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
if (sizeNext > 0)
{
inStream.Read(_buffer0, 0, sizeNext);
}
int sizebuffer = sizeNext;
sizetogo -= sizeNext;
bool whichBuffer = true;
while (sizebuffer > 0 && !lbuffer.errorState)
{
sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
if (sizeNext > 0)
{
lbuffer.Trigger(whichBuffer ? _buffer1 : _buffer0, sizeNext);
}
byte[] buffer = whichBuffer ? _buffer0 : _buffer1;
tcrc32?.Trigger(buffer, sizebuffer);
tmd5?.Trigger(buffer, sizebuffer);
tsha1?.Trigger(buffer, sizebuffer);
altCrc32?.Trigger(buffer, sizebuffer);
altMd5?.Trigger(buffer, sizebuffer);
altSha1?.Trigger(buffer, sizebuffer);
if (sizeNext > 0)
{
lbuffer.Wait();
}
tcrc32?.Wait();
tmd5?.Wait();
tsha1?.Wait();
altCrc32?.Wait();
altMd5?.Wait();
altSha1?.Wait();
sizebuffer = sizeNext;
sizetogo -= sizeNext;
whichBuffer = !whichBuffer;
}
lbuffer.Finish();
tcrc32?.Finish();
tmd5?.Finish();
tsha1?.Finish();
altCrc32?.Finish();
altMd5?.Finish();
altSha1?.Finish();
}
catch
{
lbuffer?.Dispose();
tcrc32?.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
altCrc32?.Dispose();
altMd5?.Dispose();
altSha1?.Dispose();
return(0x17); // need to remember what this number is for
}
if (lbuffer.errorState)
{
lbuffer.Dispose();
tcrc32?.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
altCrc32?.Dispose();
altMd5?.Dispose();
altSha1?.Dispose();
return(0x17); // need to remember what this number is for
}
fileResults.CRC = tcrc32?.Hash;
fileResults.SHA1 = tsha1?.Hash;
fileResults.MD5 = tmd5?.Hash;
fileResults.AltCRC = altCrc32?.Hash;
fileResults.AltSHA1 = altSha1?.Hash;
fileResults.AltMD5 = altMd5?.Hash;
lbuffer.Dispose();
tcrc32?.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
altCrc32?.Dispose();
altMd5?.Dispose();
altSha1?.Dispose();
return(0);
}
private ZipReturn ReadBody(bool deepScan)
{
using (BinaryReader zipBr = new BinaryReader(_zipFs, Encoding.UTF8, true))
{
byte ID1 = zipBr.ReadByte();
byte ID2 = zipBr.ReadByte();
if ((ID1 != 0x1f) || (ID2 != 0x8b))
{
_zipFs.Close();
return(ZipReturn.ZipSignatureError);
}
byte CM = zipBr.ReadByte();
if (CM != 8)
{
_zipFs.Close();
return(ZipReturn.ZipUnsupportedCompression);
}
byte FLG = zipBr.ReadByte();
uint MTime = zipBr.ReadUInt32();
byte XFL = zipBr.ReadByte();
byte OS = zipBr.ReadByte();
//if FLG.FEXTRA set
if ((FLG & 0x4) == 0x4)
{
int XLen = zipBr.ReadInt16();
byte[] bytes = zipBr.ReadBytes(XLen);
if (XLen == 28)
{
md5Hash = new byte[16];
Array.Copy(bytes, 0, md5Hash, 0, 16);
crc = new byte[4];
Array.Copy(bytes, 16, crc, 0, 4);
uncompressedSize = BitConverter.ToUInt64(bytes, 20);
}
if (XLen == 77)
{
md5Hash = new byte[16];
Array.Copy(bytes, 0, md5Hash, 0, 16);
crc = new byte[4];
Array.Copy(bytes, 16, crc, 0, 4);
uncompressedSize = BitConverter.ToUInt64(bytes, 20);
altType = (HeaderFileType)bytes[28];
altmd5Hash = new byte[16];
Array.Copy(bytes, 29, altmd5Hash, 0, 16);
altsha1Hash = new byte[20];
Array.Copy(bytes, 45, altsha1Hash, 0, 20);
altcrc = new byte[4];
Array.Copy(bytes, 65, altcrc, 0, 4);
uncompressedAltSize = BitConverter.ToUInt64(bytes, 69);
}
}
//if FLG.FNAME set
if ((FLG & 0x8) == 0x8)
{
int XLen = zipBr.ReadInt16();
byte[] bytes = zipBr.ReadBytes(XLen);
}
//if FLG.FComment set
if ((FLG & 0x10) == 0x10)
{
int XLen = zipBr.ReadInt16();
byte[] bytes = zipBr.ReadBytes(XLen);
}
//if FLG.FHCRC set
if ((FLG & 0x2) == 0x2)
{
uint crc16 = zipBr.ReadUInt16();
}
}
compressedSize = (ulong)(_zipFs.Length - _zipFs.Position) - 8;
datapos = _zipFs.Position;
if (deepScan)
{
if (Buffer0 == null)
{
Buffer0 = new byte[Buffersize];
}
if (Buffer1 == null)
{
Buffer1 = new byte[Buffersize];
}
Stream ds = new ZlibBaseStream(_zipFs, CompressionMode.Decompress, CompressionLevel.Default, ZlibStreamFlavor.DEFLATE, true);
ThreadLoadBuffer lbuffer = new ThreadLoadBuffer(ds);
ThreadCRC crc32 = new ThreadCRC();
ThreadMD5 md5 = new ThreadMD5();
ThreadSHA1 sha1 = new ThreadSHA1();
ulong uncompressedRead = 0;
int bufferRead = ds.Read(Buffer0, 0, Buffersize);
uncompressedRead += (ulong)bufferRead;
bool whichBuffer = true;
while (bufferRead > 0)
{
// trigger the buffer loading worker
lbuffer.Trigger(whichBuffer ? Buffer1 : Buffer0, Buffersize);
byte[] buffer = whichBuffer ? Buffer0 : Buffer1;
// trigger the hashing workers
crc32.Trigger(buffer, bufferRead);
md5.Trigger(buffer, bufferRead);
sha1.Trigger(buffer, bufferRead);
lbuffer.Wait();
crc32.Wait();
md5.Wait();
sha1.Wait();
// setup next loop around
bufferRead = lbuffer.SizeRead;
uncompressedRead += (ulong)bufferRead;
whichBuffer = !whichBuffer;
}
// tell all the workers we are finished
lbuffer.Finish();
crc32.Finish();
md5.Finish();
sha1.Finish();
// get the results
byte[] testcrc = crc32.Hash;
byte[] testmd5 = md5.Hash;
byte[] testsha1 = sha1.Hash;
// cleanup
lbuffer.Dispose();
crc32.Dispose();
md5.Dispose();
sha1.Dispose();
ds.Close();
ds.Dispose();
if (uncompressedSize != 0)
{
if (uncompressedSize != uncompressedRead)
{
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
else
{
uncompressedSize = uncompressedRead;
}
if (crc != null)
{
for (int i = 0; i < 4; i++)
{
if (crc[i] == testcrc[i])
{
continue;
}
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
else
{
crc = testcrc;
}
if (md5Hash != null)
{
for (int i = 0; i < 16; i++)
{
if (md5Hash[i] == testmd5[i])
{
continue;
}
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
else
{
md5Hash = testmd5;
}
if (sha1Hash != null)
{
for (int i = 0; i < 20; i++)
{
if (sha1Hash[i] == testsha1[i])
{
continue;
}
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
else
{
sha1Hash = testsha1;
}
}
_zipFs.Position = _zipFs.Length - 8;
byte[] gzcrc;
uint gzLength;
using (BinaryReader zipBr = new BinaryReader(_zipFs, Encoding.UTF8, true))
{
gzcrc = zipBr.ReadBytes(4);
gzLength = zipBr.ReadUInt32();
}
if (crc != null)
{
for (int i = 0; i < 4; i++)
{
if (gzcrc[3 - i] == crc[i])
{
continue;
}
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
else
{
crc = new[] { gzcrc[3], gzcrc[2], gzcrc[1], gzcrc[0] };
}
if (uncompressedSize != 0)
{
if (gzLength != (uncompressedSize & 0xffffffff))
{
_zipFs.Close();
return(ZipReturn.ZipDecodeError);
}
}
return(ZipReturn.ZipGood);
}
public static int CheckSumRead(string filename, bool testDeep, out byte[] crc, out byte[] bMD5, out byte[] bSHA1)
{
bMD5 = null;
bSHA1 = null;
crc = null;
Stream ds = null;
ThreadLoadBuffer lbuffer = null;
ThreadCRC tcrc32 = null;
ThreadMD5 tmd5 = null;
ThreadSHA1 tsha1 = null;
try
{
int errorCode = FileStream.OpenFileRead(filename, out ds);
if (errorCode != 0)
{
return(errorCode);
}
lbuffer = new ThreadLoadBuffer(ds);
tcrc32 = new ThreadCRC();
if (testDeep)
{
tmd5 = new ThreadMD5();
tsha1 = new ThreadSHA1();
}
long sizetogo = ds.Length;
// Pre load the first buffer0
int sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
ds.Read(Buffer0, 0, sizeNext);
int sizebuffer = sizeNext;
sizetogo -= sizeNext;
bool whichBuffer = true;
while ((sizebuffer > 0) && !lbuffer.errorState)
{
sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
if (sizeNext > 0)
{
lbuffer.Trigger(whichBuffer ? Buffer1 : Buffer0, sizeNext);
}
byte[] buffer = whichBuffer ? Buffer0 : Buffer1;
tcrc32.Trigger(buffer, sizebuffer);
tmd5?.Trigger(buffer, sizebuffer);
tsha1?.Trigger(buffer, sizebuffer);
if (sizeNext > 0)
{
lbuffer.Wait();
}
tcrc32.Wait();
tmd5?.Wait();
tsha1?.Wait();
sizebuffer = sizeNext;
sizetogo -= sizeNext;
whichBuffer = !whichBuffer;
}
lbuffer.Finish();
tcrc32.Finish();
tmd5?.Finish();
tsha1?.Finish();
ds.Close();
}
catch
{
ds?.Close();
lbuffer?.Dispose();
tcrc32?.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
return(0x17); // need to remember what this number is for
}
if (lbuffer.errorState)
{
ds?.Close();
lbuffer?.Dispose();
tcrc32?.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
return(0x17); // need to remember what this number is for
}
crc = tcrc32.Hash;
if (testDeep)
{
bMD5 = tmd5.Hash;
bSHA1 = tsha1.Hash;
}
lbuffer.Dispose();
tcrc32.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
return(0);
}
public static ReturnCode DecompressSource7ZipFile(RvFile zZipFileIn, bool includeGood, out string error)
{
byte[] buffer = new byte[BufferSize];
RvFile cacheDir = DB.RvFileCache();
string fileNameIn = zZipFileIn.FullName;
SevenZ zipFileIn = new SevenZ();
ZipReturn zr1 = zipFileIn.ZipFileOpen(fileNameIn, zZipFileIn.TimeStamp, true);
if (zr1 != ZipReturn.ZipGood)
{
error = "Error opening 7zip file for caching";
return(ReturnCode.RescanNeeded);
}
RvFile outDir = new RvFile(FileType.Dir)
{
Name = zZipFileIn.Name + ".cache",
Parent = cacheDir,
DatStatus = DatStatus.InToSort,
GotStatus = GotStatus.Got
};
int nameDirIndex = 0;
while (cacheDir.ChildNameSearch(outDir, out int index) == 0)
{
nameDirIndex++;
outDir.Name = zZipFileIn.Name + ".cache (" + nameDirIndex + ")";
}
cacheDir.ChildAdd(outDir);
Directory.CreateDirectory(outDir.FullName);
for (int i = 0; i < zipFileIn.LocalFilesCount(); i++)
{
if (zZipFileIn.Child(i).IsDir)
{
continue;
}
RvFile thisFile = null;
for (int j = 0; j < zZipFileIn.ChildCount; j++)
{
if (zZipFileIn.Child(j).ZipFileIndex != i)
{
continue;
}
thisFile = zZipFileIn.Child(j);
break;
}
if (thisFile == null)
{
error = "Error opening 7zip file for caching";
return(ReturnCode.RescanNeeded);
}
bool extract = true;
// first check to see if we have a file version of this compressed file somewhere else.
foreach (RvFile f in thisFile.FileGroup.Files)
{
if (f.FileType == FileType.File && f.GotStatus == GotStatus.Got)
{
extract = false;
}
}
if (!extract)
{
continue;
}
extract = false;
if (includeGood)
{
// if this is the file we are fixing then pull out the correct files.
if (thisFile.RepStatus == RepStatus.Correct)
{
extract = true;
}
}
// next check to see if we need this extracted to fix another file
foreach (RvFile f in thisFile.FileGroup.Files)
{
if (f.RepStatus == RepStatus.CanBeFixed)
{
extract = true;
break;
}
}
if (!extract)
{
continue;
}
string cleanedName = thisFile.Name;
cleanedName = cleanedName.Replace("/", "-");
cleanedName = cleanedName.Replace("\\", "-");
RvFile outFile = new RvFile(FileType.File)
{
Name = cleanedName,
Size = thisFile.Size,
CRC = thisFile.CRC,
SHA1 = thisFile.SHA1,
MD5 = thisFile.MD5,
HeaderFileType = thisFile.HeaderFileType,
AltSize = thisFile.AltSize,
AltCRC = thisFile.AltCRC,
AltSHA1 = thisFile.AltSHA1,
AltMD5 = thisFile.AltMD5,
FileGroup = thisFile.FileGroup
};
outFile.SetStatus(DatStatus.InToSort, GotStatus.Got);
outFile.FileStatusSet(
FileStatus.HeaderFileTypeFromHeader |
FileStatus.SizeFromHeader | FileStatus.SizeVerified |
FileStatus.CRCFromHeader | FileStatus.CRCVerified |
FileStatus.SHA1FromHeader | FileStatus.SHA1Verified |
FileStatus.MD5FromHeader | FileStatus.MD5Verified |
FileStatus.AltSizeFromHeader | FileStatus.AltSizeVerified |
FileStatus.AltCRCFromHeader | FileStatus.AltCRCVerified |
FileStatus.AltSHA1FromHeader | FileStatus.AltSHA1Verified |
FileStatus.AltMD5FromHeader | FileStatus.AltMD5Verified
, thisFile);
outFile.RepStatus = RepStatus.NeededForFix;
zipFileIn.ZipFileOpenReadStream(i, out Stream readStream, out ulong unCompressedSize);
string filenameOut = Path.Combine(outDir.FullName, outFile.Name);
ThreadMD5 tmd5 = null;
ThreadSHA1 tsha1 = null;
ThreadCRC tcrc32 = new ThreadCRC();
if (Settings.rvSettings.FixLevel != EFixLevel.Level1 && Settings.rvSettings.FixLevel != EFixLevel.TrrntZipLevel1)
{
tmd5 = new ThreadMD5();
tsha1 = new ThreadSHA1();
}
int errorCode = FileStream.OpenFileWrite(filenameOut, out Stream writeStream);
ulong sizetogo = unCompressedSize;
while (sizetogo > 0)
{
int sizenow = sizetogo > BufferSize ? BufferSize : (int)sizetogo;
try
{
readStream.Read(buffer, 0, sizenow);
}
catch (Exception ex)
{
if (ex is ZlibException || ex is DataErrorException)
{
ZipReturn zr = zipFileIn.ZipFileCloseReadStream();
if (zr != ZipReturn.ZipGood)
{
error = "Error Closing " + zr + " Stream :" + zipFileIn.ZipFilename;
return(ReturnCode.FileSystemError);
}
zipFileIn.ZipFileClose();
writeStream.Flush();
writeStream.Close();
if (filenameOut != null)
{
File.Delete(filenameOut);
}
thisFile.GotStatus = GotStatus.Corrupt;
error = "Unexpected corrupt archive file found:\n" + zZipFileIn.FullName +
"\nRun Find Fixes, and Fix to continue fixing correctly.";
return(ReturnCode.SourceDataStreamCorrupt);
}
error = "Error reading Source File " + ex.Message;
return(ReturnCode.FileSystemError);
}
tcrc32.Trigger(buffer, sizenow);
tmd5?.Trigger(buffer, sizenow);
tsha1?.Trigger(buffer, sizenow);
tcrc32.Wait();
tmd5?.Wait();
tsha1?.Wait();
try
{
writeStream.Write(buffer, 0, sizenow);
}
catch (Exception e)
{
error = "Error writing out file. " + Environment.NewLine + e.Message;
return(ReturnCode.FileSystemError);
}
sizetogo = sizetogo - (ulong)sizenow;
}
writeStream.Flush();
writeStream.Close();
writeStream.Dispose();
tcrc32.Finish();
tmd5?.Finish();
tsha1?.Finish();
byte[] bCRC = tcrc32.Hash;
byte[] bMD5 = tmd5?.Hash;
byte[] bSHA1 = tsha1?.Hash;
tcrc32.Dispose();
tmd5?.Dispose();
tsha1?.Dispose();
FileInfo fi = new FileInfo(filenameOut);
outFile.TimeStamp = fi.LastWriteTime;
if (bCRC != null && thisFile.CRC != null && !ArrByte.BCompare(bCRC, thisFile.CRC))
{
// error in file.
}
if (bMD5 != null && thisFile.MD5 != null && !ArrByte.BCompare(bMD5, thisFile.MD5))
{
// error in file.
}
if (bSHA1 != null && thisFile.SHA1 != null && !ArrByte.BCompare(bSHA1, thisFile.SHA1))
{
// error in file.
}
thisFile.FileGroup.Files.Add(outFile);
outDir.ChildAdd(outFile);
}
zipFileIn.ZipFileClose();
error = "";
return(ReturnCode.Good);
}
public void DeepScan()
{
if (_buffer0 == null)
{
_buffer0 = new byte[Buffersize];
_buffer1 = new byte[Buffersize];
}
for (int index = 0; index < _localFiles.Count; index++)
{
if (_localFiles[index].isDirectory || (_localFiles[index].UncompressedSize == 0))
{
_localFiles[index].md5 = new byte[]
{ 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04, 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e };
_localFiles[index].sha1 = new byte[]
{
0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90,
0xaf, 0xd8, 0x07, 0x09
};
_localFiles[index].FileStatus = ZipReturn.ZipGood;
continue;
}
ulong sizetogo;
Stream inStream;
ZipReturn zr = ZipFileOpenReadStream(index, out inStream, out sizetogo);
if (zr != ZipReturn.ZipGood)
{
continue;
}
if (inStream == null)
{
continue;
}
ThreadLoadBuffer lbuffer = new ThreadLoadBuffer(inStream);
ThreadCRC tcrc32 = new ThreadCRC();
ThreadMD5 tmd5 = new ThreadMD5();
ThreadSHA1 tsha1 = new ThreadSHA1();
// Pre load the first buffer0
int sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
inStream.Read(_buffer0, 0, sizeNext);
int sizebuffer = sizeNext;
sizetogo -= (ulong)sizeNext;
bool whichBuffer = true;
while ((sizebuffer > 0) && !lbuffer.errorState)
{
sizeNext = sizetogo > Buffersize ? Buffersize : (int)sizetogo;
if (sizeNext > 0)
{
lbuffer.Trigger(whichBuffer ? _buffer1 : _buffer0, sizeNext);
}
byte[] buffer = whichBuffer ? _buffer0 : _buffer1;
tcrc32.Trigger(buffer, sizebuffer);
tmd5.Trigger(buffer, sizebuffer);
tsha1.Trigger(buffer, sizebuffer);
if (sizeNext > 0)
{
lbuffer.Wait();
}
tcrc32.Wait();
tmd5.Wait();
tsha1.Wait();
sizebuffer = sizeNext;
sizetogo -= (ulong)sizeNext;
whichBuffer = !whichBuffer;
}
if (lbuffer.errorState)
{
lbuffer.Dispose();
tcrc32.Dispose();
tmd5.Dispose();
tsha1.Dispose();
_localFiles[index].FileStatus = ZipReturn.ZipDecodeError;
continue;
}
lbuffer.Finish();
tcrc32.Finish();
tmd5.Finish();
tsha1.Finish();
byte[] testcrc = tcrc32.Hash;
_localFiles[index].md5 = tmd5.Hash;
_localFiles[index].sha1 = tsha1.Hash;
lbuffer.Dispose();
tcrc32.Dispose();
tmd5.Dispose();
tsha1.Dispose();
_localFiles[index].FileStatus = Util.ByteArrCompare(_localFiles[index].crc, testcrc)
? ZipReturn.ZipGood
: ZipReturn.ZipCRCDecodeError;
}
}