public static bool CheckTorrentIntegrity(string torrentPath, string downloadPath, CTICB cb)
{
CTITryReportStatus(cb, CTICreateParsingStatus());
TorrentParser torrentParser = new TorrentParser(File.ReadAllBytes(torrentPath));
for (int i = 0; i < torrentParser.pieceHashes.Length; i++)
{
CTITryReportStatus(cb, CTICreateProcessingPieceStatus(i + 1, torrentParser.pieceHashes.Length));
byte[] piece = torrentParser.GetPieceFor(torrentParser.tree, i, downloadPath);
SHA1 sha1 = SHA1.Create();
string pieceHash = torrentParser.pieceHashes[i];
string hash = B2S(sha1.ComputeHash(piece));
if (!pieceHash.Equals(hash))
{
return(false);
}
}
return(true);
}
public static bool CheckTorrentIntegrityV2(string torrentPath, string downloadPath, CTICB cb)
{
CTITryReportStatus(cb, CTICreateParsingStatus());
TorrentParser torrentParser = new TorrentParser(File.ReadAllBytes(torrentPath));
JObject _tree = torrentParser.tree;
int pieceLength = (int)_tree["info"]["piece length"];
JArray files = (JArray)_tree["info"]["files"];
string name = (string)_tree["info"]["name"];
int pieceHashesIndex = 0;
CTITryReportStatus(cb, CTICreateProcessingPieceStatus(1, torrentParser.pieceHashes.Length));
if (files != null)
{
int leftToRead = pieceLength;
List <byte> piece = new List <byte>();
for (int i = 0; i < files.Count; i++)
{
JObject file = (JObject)files[i];
JArray path = (JArray)file["path"];
FileStream fileStream = new FileStream(ResolvePath(downloadPath, name, path), FileMode.Open);
long rest = fileStream.Length;
while (rest >= leftToRead)
{
byte[] buffer = new byte[leftToRead];
fileStream.Read(buffer, 0, leftToRead);
rest = (fileStream.Length - fileStream.Position);
piece.AddRange(buffer);
string pieceHash = torrentParser.pieceHashes[pieceHashesIndex];
pieceHashesIndex++;
SHA1 sha1 = SHA1.Create();
string hash = B2S(sha1.ComputeHash(piece.ToArray()));
piece.Clear();
if (!pieceHash.Equals(hash))
{
return(false);
}
CTITryReportStatus(cb, CTICreateProcessingPieceStatus(pieceHashesIndex + 1, torrentParser.pieceHashes.Length));
leftToRead = pieceLength;
}
if (rest != 0)
{
leftToRead = leftToRead - (int)rest;
byte[] buffer = new byte[rest];
fileStream.Read(buffer, 0, (int)rest);
piece.AddRange(buffer);
rest = 0;
if (i == files.Count - 1)
{
Console.WriteLine(pieceLength);
Console.WriteLine(buffer.Length);
string pieceHash = torrentParser.pieceHashes[pieceHashesIndex];
pieceHashesIndex++;
SHA1 sha1 = SHA1.Create();
string hash = B2S(sha1.ComputeHash(piece.ToArray()));
piece.Clear();
if (!pieceHash.Equals(hash))
{
return(false);
}
}
}
fileStream.Dispose();
}
return(true);
}
else
{
FileStream fileStream = new FileStream(Path.Combine(downloadPath, (string)_tree["info"]["name"]), FileMode.Open);
byte[] piece = new byte[pieceLength];
int read = 0;
while ((read = fileStream.Read(piece, 0, pieceLength)) == pieceLength)
{
if (read != pieceLength)
{
byte[] tmp = new byte[read];
Array.Copy(piece, tmp, read);
piece = tmp;
}
string pieceHash = torrentParser.pieceHashes[pieceHashesIndex];
pieceHashesIndex++;
SHA1 sha1 = SHA1.Create();
string hash = B2S(sha1.ComputeHash(piece));
if (!pieceHash.Equals(hash))
{
return(false);
}
if (read == pieceLength)
{
CTITryReportStatus(cb, CTICreateProcessingPieceStatus(pieceHashesIndex + 1, torrentParser.pieceHashes.Length));
}
}
return(true);
}
}