public static void ClamScanFileFromRepo(DbFile file)
{
try
{
if (Context.ClamdVersion == null)
{
Failed?.Invoke("clamd is not usable");
return;
}
if (clam == null)
{
Failed?.Invoke("clamd is not initalized");
}
string repoPath;
AlgoEnum algorithm;
if (File.Exists(Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(), file.Sha256 + ".gz")))
{
repoPath = Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(), file.Sha256 + ".gz");
algorithm = AlgoEnum.GZip;
}
else if (File.Exists(Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(),
file.Sha256 + ".bz2")))
{
repoPath = Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(), file.Sha256 + ".bz2");
algorithm = AlgoEnum.BZip2;
}
else if (File.Exists(Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(),
file.Sha256 + ".lzma")))
{
repoPath = Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(),
file.Sha256 + ".lzma");
algorithm = AlgoEnum.LZMA;
}
else if (File.Exists(Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(),
file.Sha256 + ".lz")))
{
repoPath = Path.Combine(Settings.Current.RepositoryPath, file.Sha256[0].ToString(),
file.Sha256[1].ToString(), file.Sha256[2].ToString(),
file.Sha256[3].ToString(), file.Sha256[4].ToString(), file.Sha256 + ".lz");
algorithm = AlgoEnum.LZip;
}
else
{
Failed?.Invoke($"Cannot find file with hash {file.Sha256} in the repository");
return;
}
ClamScanResult result = null;
Stream zStream = null;
if (Settings.Current.ClamdIsLocal)
{
if (algorithm == AlgoEnum.LZMA || algorithm == AlgoEnum.LZip)
{
string tmpFile = Path.Combine(Settings.Current.TemporaryFolder, Path.GetTempFileName());
FileStream outFs = new FileStream(tmpFile, FileMode.Create, FileAccess.Write);
FileStream inFs = new FileStream(repoPath, FileMode.Open, FileAccess.Read);
if (algorithm == AlgoEnum.LZMA)
{
byte[] properties = new byte[5];
inFs.Read(properties, 0, 5);
inFs.Seek(8, SeekOrigin.Current);
zStream = new LzmaStream(properties, inFs, inFs.Length - 13, file.Length);
}
else
{
zStream = new LZipStream(inFs, CompressionMode.Decompress);
}
UpdateProgress?.Invoke("Uncompressing file...", null, 0, 0);
#if DEBUG
stopwatch.Restart();
#endif
zStream.CopyTo(outFs);
zStream.Close();
outFs.Close();
#if DEBUG
stopwatch.Stop();
Console.WriteLine("Core.ClamScanFileFromRepo({0}): Uncompressing took {1} seconds", file,
stopwatch.Elapsed.TotalSeconds);
#endif
UpdateProgress?.Invoke("Requesting local scan to clamd server...", null, 0, 0);
#if DEBUG
stopwatch.Restart();
#endif
Task.Run(async() => { result = await clam.ScanFileOnServerMultithreadedAsync(tmpFile); })
.Wait();
#if DEBUG
stopwatch.Stop();
Console.WriteLine("Core.ClamScanFileFromRepo({0}): Clamd took {1} seconds to scan", file,
stopwatch.Elapsed.TotalSeconds);
#endif
File.Delete(tmpFile);
}
else
{
UpdateProgress?.Invoke("Requesting local scan to clamd server...", null, 0, 0);
#if DEBUG
stopwatch.Restart();
#endif
Task.Run(async() => { result = await clam.ScanFileOnServerMultithreadedAsync(repoPath); })
.Wait();
#if DEBUG
stopwatch.Stop();
Console.WriteLine("Core.ClamScanFileFromRepo({0}): Clamd took {1} seconds to scan", file,
stopwatch.Elapsed.TotalSeconds);
#endif
}
}
else
{
FileStream inFs = new FileStream(repoPath, FileMode.Open, FileAccess.Read);
switch (algorithm)
{
case AlgoEnum.GZip:
zStream = new GZipStream(inFs, CompressionMode.Decompress);
break;
case AlgoEnum.BZip2:
zStream = new BZip2Stream(inFs, CompressionMode.Decompress);
break;
case AlgoEnum.LZMA:
byte[] properties = new byte[5];
inFs.Read(properties, 0, 5);
inFs.Seek(8, SeekOrigin.Current);
zStream = new LzmaStream(properties, inFs, inFs.Length - 13, file.Length);
break;
case AlgoEnum.LZip:
zStream = new LZipStream(inFs, CompressionMode.Decompress);
break;
}
UpdateProgress?.Invoke("Uploading file to clamd server...", null, 0, 0);
#if DEBUG
stopwatch.Restart();
#endif
Task.Run(async() => { result = await clam.SendAndScanFileAsync(zStream); }).Wait();
#if DEBUG
stopwatch.Stop();
Console.WriteLine("Core.ClamScanFileFromRepo({0}): Clamd took {1} seconds to scan", file,
stopwatch.Elapsed.TotalSeconds);
#endif
zStream.Close();
}
if (result.InfectedFiles != null && result.InfectedFiles.Count > 0)
{
file.HasVirus = true;
file.Virus = result.InfectedFiles[0].VirusName;
}
else if (file.HasVirus == null)
{
// If no scan has been done, mark as false.
// If a positive has already existed don't overwrite it.
file.HasVirus = false;
file.Virus = null;
}
file.ClamTime = DateTime.UtcNow;
dbCore.DbOps.UpdateFile(file);
ScanFinished?.Invoke(file);
}
catch (ThreadAbortException) { }
catch (Exception ex)
{
Failed?.Invoke($"Exception {ex.Message} when calling clamd");
#if DEBUG
Console.WriteLine("Exception {0}\n{1}", ex.Message, ex.InnerException);
#endif
}
}
