public NotifyReadStream(Stream InInner, NotifyReadDelegate InNotifyRead)
{
Inner = InInner;
NotifyRead = InNotifyRead;
TotalRead = 0;
}
public NotifyReadStream(Stream InInner, NotifyReadDelegate InNotifyRead)
{
Inner = InInner;
NotifyRead = InNotifyRead;
TotalRead = 0;
}
static void DownloadFileAndVerifyHash(string Url, string ProxyUrl, string PackFileName, string ExpectedHash, NotifyReadDelegate NotifyRead)
{
// Create the web request
WebRequest Request = WebRequest.Create(Url);
if (String.IsNullOrEmpty(ProxyUrl))
{
Request.Proxy = null;
}
else
{
Request.Proxy = new WebProxy(ProxyUrl);
}
// Get the response
using (WebResponse Response = Request.GetResponse())
{
// Download the file, decompressing and hashing it as we go
SHA1Managed Hasher = new SHA1Managed();
using (FileStream OutputStream = File.OpenWrite(PackFileName))
{
CryptoStream HashOutputStream = new CryptoStream(OutputStream, Hasher, CryptoStreamMode.Write);
using (NotifyReadStream InputStream = new NotifyReadStream(Response.GetResponseStream(), NotifyRead))
{
GZipStream DecompressedStream = new GZipStream(InputStream, CompressionMode.Decompress, true);
DecompressedStream.CopyTo(HashOutputStream);
}
HashOutputStream.FlushFinalBlock();
}
// Check the hash was what we expected
string Hash = BitConverter.ToString(Hasher.Hash).ToLower().Replace("-", "");
if (Hash != ExpectedHash)
{
throw new InvalidDataException(String.Format("Incorrect hash for {0} - expected {1}, got {2}", Url, ExpectedHash, Hash));
}
}
}
