void SendFileFromCMS(HttpRequest request, HttpResponse response, InternalFileManager fileManager, VLFile file)
{
Stream contentStream = null;
try
{
var binaryContent = fileManager.GetFileStream(file);
contentStream = new MemoryStream(binaryContent, 0, binaryContent.Length, false, false);
StreamContent(request, response, binaryContent.Length, contentStream);
}
catch (Exception ex)
{
Logger.Error(HttpContext.Current.Request.RawUrl, ex);
throw;
}
finally
{
if (contentStream != null)
{
((IDisposable)contentStream).Dispose();
}
}
}
void SendFileFromFS(HttpRequest request, HttpResponse response, InternalFileManager fileManager, VLFile file)
{
string acceptEncoding = request.Headers["Accept-Encoding"];
bool isGzipOutput = (!string.IsNullOrWhiteSpace(acceptEncoding) && acceptEncoding.Contains("gzip"));
bool isDeflateOutput = (!string.IsNullOrWhiteSpace(acceptEncoding) && acceptEncoding.Contains("deflate"));
Stream outputStream = null;
bool disposeStream = false;
try
{
string filepath = fileManager.GetFilePath(file);
string filename = file.ManagedFileName;
FileInfo fileInfo = new FileInfo(filepath);
if (fileInfo.Exists)
{
int len = (int)fileInfo.Length;
if (len <= TransmitFileUpperLimit)
{
response.TransmitFile(filepath);
}
else
{
StreamContent(request, response, len, System.IO.File.OpenRead(filepath));
}
}
}
catch (Exception ex)
{
Logger.Error(HttpContext.Current.Request.RawUrl, ex);
throw;
}
finally
{
if (outputStream != null && disposeStream)
{
((IDisposable)outputStream).Dispose();
}
}
}
/// <summary>
///
/// </summary>
/// <param name="context"></param>
public void ProcessRequest(HttpContext context)
{
InternalFileManager manager = new InternalFileManager();
try
{
Guid?fileId = TryParseGuid(context, "fileid", required: false, defValue: null);
if (fileId.HasValue == false)
{
return;
}
//τραβάμε τα στοιχεία του αρχείου απο το σύστημα
var file = manager.GetFileById(fileId.Value);
if (file == null)
{
return;
}
SendFile(context.Request, context.Response, manager, file);
}
catch (ArgumentException ex)
{
#region HTTP Error 400 Bad Request
SendException(context, ex, HttpStatusCode.BadRequest);
#endregion
}
catch (ThreadAbortException)
{
//catching the ThreadAbortExceptions from HttpResponse.End() calls...
}
catch (Exception ex)
{
#region HTTP Error 500 Internal Server Error
SendException(context, ex, HttpStatusCode.InternalServerError);
#endregion
}
}
void SendFile(HttpRequest request, HttpResponse response, InternalFileManager fileManager, VLFile file)
{
try
{
response.ClearHeaders();
response.Clear();
response.Cookies.Clear();
response.Cache.SetCacheability(HttpCacheability.NoCache);
response.Charset = System.Text.UTF8Encoding.UTF8.WebName;
String userAgent = HttpContext.Current.Request.Headers.Get("User-Agent");
if (userAgent.Contains("MSIE"))
{
response.AppendHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(file.OriginalFileName.Replace(" ", "_"), System.Text.Encoding.UTF8));
}
else
{
response.AppendHeader("Content-Disposition", "attachment; filename=" + file.OriginalFileName.Replace(" ", "_"));
}
response.ContentType = GetMimeType(file.OriginalFileName);
if (!file.IsPhysicalFile || file.IsCompressed || file.IsEncrypted)
{
SendFileFromCMS(request, response, fileManager, file);
}
else
{
SendFileFromFS(request, response, fileManager, file);
}
}
catch (Exception ex)
{
Logger.Error(HttpContext.Current.Request.RawUrl, ex);
throw;
}
}
