public void ProcessRequest(HttpContext context)
{
var request = context.Request;
var response = context.Response;
VirtualFile vf = null;
var filePath = request.FilePath;
// Cross-Origin Resource Sharing (CORS)
if (!HttpHeaderTools.IsOriginHeaderAllowed())
{
AuthenticationHelper.ThrowForbidden(filePath);
}
if (HostingEnvironment.VirtualPathProvider.FileExists(filePath))
{
vf = HostingEnvironment.VirtualPathProvider.GetFile(filePath);
}
if (vf == null)
{
throw new HttpException(404, "File does not exist");
}
response.ClearContent();
// Set content type only if this is not a RepositoryFile, because the
// Open method of RepositoryFile will set the content type itself.
if (!(vf is RepositoryFile))
{
var extension = System.IO.Path.GetExtension(filePath);
context.Response.ContentType = MimeTable.GetMimeType(extension);
// add the necessary header for the css font-face rule
if (MimeTable.IsFontType(extension))
{
HttpHeaderTools.SetAccessControlHeaders();
}
}
// The bytes we write into the output stream will NOT be buffered and will be sent
// to the client immediately. This makes sure that the whole (potentially large)
// file is not loaded into the memory on the server.
response.BufferOutput = false;
using (var stream = vf.Open())
{
response.AppendHeader("Content-Length", stream.Length.ToString());
response.Clear();
// Let ASP.NET handle sending bytes to the client (avoid Flush).
stream.CopyTo(response.OutputStream);
}
}
public override Stream Open()
{
if (_node == null)
{
try
{
var allowCompiledContent = AllowCompiledContent(_repositoryPath);
// http://localhost/TestDoc.docx?action=RestoreVersion&version=2.0A
// When there are 'action' and 'version' parameters in the requested URL the portal is trying to load the desired version of the node of the requested action.
// This leads to an exception when the action doesn't have that version.
// _repositoryPath will point to the node of action and ContextNode will be the document
// if paths are not equal then we will return the last version of the requested action.
// We also have to ignore the version request parameter in case of binary handler, because that
// ashx must not have multiple versions.
if (PortalContext.Current == null || PortalContext.Current.BinaryHandlerRequestedNodeHead != null || string.IsNullOrEmpty(PortalContext.Current.VersionRequest) || _repositoryPath != PortalContext.Current.ContextNodePath)
{
if (allowCompiledContent)
{
// elevated mode: pages, ascx files, etc.
using (new SystemAccount())
{
_node = Node.LoadNode(_repositoryPath, VersionNumber.LastFinalized);
}
}
else
{
_node = Node.LoadNode(_repositoryPath, VersionNumber.LastFinalized);
}
}
else
{
VersionNumber version;
if (VersionNumber.TryParse(PortalContext.Current.VersionRequest, out version))
{
Node node;
if (allowCompiledContent)
{
// elevated mode: pages, ascx files, etc.
using (new SystemAccount())
{
node = Node.LoadNode(_repositoryPath, version);
}
}
else
{
node = Node.LoadNode(_repositoryPath, version);
}
if (node != null && node.SavingState == ContentSavingState.Finalized)
{
_node = node;
}
}
}
// we cannot serve the binary if the user has only See or Preview permissions for the content
if (_node != null && (_node.IsHeadOnly || _node.IsPreviewOnly) && HttpContext.Current != null)
{
AuthenticationHelper.ThrowForbidden(_node.Name);
}
}
catch (SenseNetSecurityException ex) // logged
{
SnLog.WriteException(ex);
if (HttpContext.Current == null || (_repositoryPath != null && _repositoryPath.ToLower().EndsWith(".ascx")))
{
throw;
}
AuthenticationHelper.DenyAccess(HttpContext.Current.ApplicationInstance);
}
}
if (_node == null)
{
throw new ApplicationException(string.Format("{0} not found. RepositoryFile cannot be served.", _repositoryPath));
}
string propertyName = string.Empty;
if (PortalContext.Current != null)
{
propertyName = PortalContext.Current.QueryStringNodePropertyName;
}
if (string.IsNullOrEmpty(propertyName))
{
propertyName = PortalContext.DefaultNodePropertyName;
}
var propType = _node.PropertyTypes[propertyName];
if (propType == null)
{
throw new ApplicationException("Property not found: " + propertyName);
}
var propertyDataType = propType.DataType;
Stream stream;
switch (propertyDataType)
{
case DataType.Binary:
string contentType;
BinaryFileName fileName;
stream = DocumentBinaryProvider.Current.GetStream(_node, propertyName, out contentType, out fileName);
if (stream == null)
{
throw new ApplicationException(string.Format("BinaryProperty.Value.GetStream() returned null. RepositoryPath={0}, OriginalUri={1}, AppDomainFriendlyName={2} ", this._repositoryPath, ((PortalContext.Current != null) ? PortalContext.Current.RequestedUri.ToString() : "PortalContext.Current is null"), AppDomain.CurrentDomain.FriendlyName));
}
// Set MIME type only if this is the main content (skip asp controls and pages,
// page templates and other repository files opened during the request).
// We need this in case of special images, fonts, etc, and handle the variable
// at the end of the request (PortalContextModule.EndRequest method).
if (HttpContext.Current != null &&
PortalContext.Current != null &&
string.Equals(PortalContext.Current.RepositoryPath, _repositoryPath, StringComparison.InvariantCultureIgnoreCase) &&
(string.IsNullOrEmpty(PortalContext.Current.ActionName) || string.Equals(PortalContext.Current.ActionName, "Browse", StringComparison.InvariantCultureIgnoreCase)) &&
!string.IsNullOrEmpty(contentType) &&
contentType != "text/asp")
{
if (!HttpContext.Current.Items.Contains(RESPONSECONTENTTYPEKEY))
{
HttpContext.Current.Items.Add(RESPONSECONTENTTYPEKEY, contentType);
}
// set the value anyway as it may be useful in case of our custom file handler (SenseNetStaticFileHandler)
HttpContext.Current.Response.ContentType = contentType;
// add the necessary header for the css font-face rule
if (MimeTable.IsFontType(fileName.Extension))
{
HttpHeaderTools.SetAccessControlHeaders();
}
}
// set compressed encoding if necessary
if (HttpContext.Current != null && MimeTable.IsCompressedType(fileName.Extension))
{
HttpContext.Current.Response.Headers.Add("Content-Encoding", "gzip");
}
// let the client code log file downloads
var file = _node as ContentRepository.File;
if (file != null)
{
ContentRepository.File.Downloaded(file.Id);
}
break;
case DataType.String:
case DataType.Text:
case DataType.Int:
case DataType.DateTime:
stream = new MemoryStream(Encoding.UTF8.GetBytes(_node[propertyName].ToString()));
break;
default:
throw new NotSupportedException(string.Format("The {0} property cannot be served because that's datatype is {1}.", propertyName, propertyDataType));
}
return(stream);
}
