string GetOutputPath(string cacheDirectory, PartialZipDownload part)
{
var outputPath = new FileInfo(Path.Combine(cacheDirectory, part.Id, part.ToFile));
outputPath.Directory.Create();
return(outputPath.FullName);
}
async Task <bool> ExtractPartAndValidate(PartialZipDownload part, Stream partInputStream, string cacheDirectory)
{
string fileHash = null;
var outputPath = GetOutputPath(cacheDirectory, part);
using (var iis = new System.IO.Compression.DeflateStream(partInputStream, System.IO.Compression.CompressionMode.Decompress))
//using (var iis = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream (partInputStream, new ICSharpCode.SharpZipLib.Zip.Compression.Inflater (true)))
using (var fs = File.Open(outputPath, FileMode.Create)) {
await iis.CopyToAsync(fs).ConfigureAwait(false);
await fs.FlushAsync().ConfigureAwait(false);
fs.Seek(0, SeekOrigin.Begin);
fileHash = DownloadUtils.HashMd5(fs);
LogDebugMessage("Hash of Downloaded File: {0}", fileHash);
fs.Close();
}
if (!string.IsNullOrEmpty(part.Md5) && !part.Md5.Equals(fileHash, StringComparison.InvariantCultureIgnoreCase))
{
// TODO: HANDLE
LogMessage("File MD5 Hash was invalid, deleting file: {0}", part.ToFile);
File.Delete(outputPath);
return(false);
}
return(true);
}
public bool IsAlreadyDownloaded(string cacheDirectory, PartialZipDownload partialZipDownload)
{
return(File.Exists(Path.Combine(cacheDirectory, partialZipDownload.Id, partialZipDownload.ToFile)));
}