internal void RaiseOnHashProgress(int percentageDone, string message)
{
OnHashProgress?.Invoke(percentageDone, message);
}
public static Hashes CalculateHashes_here(string strPath, OnHashProgress onHashProgress, bool getCRC32,
bool getMD5,
bool getSHA1)
{
bool getED2k = true;
logger.Trace("Using C# code to has file: {0}", strPath);
FileStream fs;
Hashes rhash = new Hashes();
FileInfo fi = new FileInfo(strPath);
fs = fi.OpenRead();
int lChunkSize = 9728000;
long nBytes = fs.Length;
long nBytesRemaining = fs.Length;
int nBytesToRead = 0;
long nBlocks = nBytes / lChunkSize;
long nRemainder = nBytes % lChunkSize; //mod
if (nRemainder > 0)
{
nBlocks++;
}
byte[] baED2KHash = new byte[16 * nBlocks];
if (nBytes > lChunkSize)
{
nBytesToRead = lChunkSize;
}
else
{
nBytesToRead = (int)nBytesRemaining;
}
onHashProgress?.Invoke(strPath, 0);
MD4 md4 = MD4.Create();
MD5 md5 = MD5.Create();
SHA1 sha1 = SHA1.Create();
Crc32 crc32 = new Crc32();
byte[] ByteArray = new byte[nBytesToRead];
long iOffSet = 0;
long iChunkCount = 0;
while (nBytesRemaining > 0)
{
iChunkCount++;
//logger.Trace("Hashing Chunk: " + iChunkCount.ToString());
int nBytesRead = fs.Read(ByteArray, 0, nBytesToRead);
if (getED2k)
{
byte[] baHash = md4.ComputeHash(ByteArray, 0, nBytesRead);
int j = (int)((iChunkCount - 1) * 16);
for (int i = 0; i < 16; i++)
{
baED2KHash[j + i] = baHash[i];
}
}
if (getMD5)
{
md5.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
}
if (getSHA1)
{
sha1.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
}
if (getCRC32)
{
crc32.TransformBlock(ByteArray, 0, nBytesRead, ByteArray, 0);
}
int percentComplete = (int)(iChunkCount / (float)nBlocks * 100);
onHashProgress?.Invoke(strPath, percentComplete);
iOffSet += lChunkSize;
nBytesRemaining = nBytes - iOffSet;
if (nBytesRemaining < lChunkSize)
{
nBytesToRead = (int)nBytesRemaining;
}
}
if (getMD5)
{
md5.TransformFinalBlock(ByteArray, 0, 0);
}
if (getSHA1)
{
sha1.TransformFinalBlock(ByteArray, 0, 0);
}
if (getCRC32)
{
crc32.TransformFinalBlock(ByteArray, 0, 0);
}
fs.Close();
onHashProgress?.Invoke(strPath, 100);
if (getED2k)
{
//byte[] baHashFinal = md4.ComputeHash(baED2KHash);
//rhash.ed2k = BitConverter.ToString(baHashFinal).Replace("-", string.Empty).ToUpper();
rhash.ED2K = nBlocks > 1
? BitConverter.ToString(md4.ComputeHash(baED2KHash)).Replace("-", string.Empty).ToUpper()
: BitConverter.ToString(baED2KHash).Replace("-", string.Empty).ToUpper();
}
if (getCRC32)
{
rhash.CRC32 = BitConverter.ToString(crc32.Hash).Replace("-", string.Empty).ToUpper();
}
if (getMD5)
{
rhash.MD5 = BitConverter.ToString(md5.Hash).Replace("-", string.Empty).ToUpper();
}
if (getSHA1)
{
rhash.SHA1 = BitConverter.ToString(sha1.Hash).Replace("-", string.Empty).ToUpper();
}
return(rhash);
}
