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
if (PortalContext.Current == 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
{
Logger.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);
}
////<only_for_test>
//if(propType == null)
//{
// StringBuilder sb = new StringBuilder();
// sb.AppendFormat("Property {0} not found.", propertyName);
// sb.AppendLine();
// foreach (var pt in _node.PropertyTypes)
// {
// sb.AppendFormat("PropertyName='{0}' - DataType='{1}'", pt.Name, pt.DataType);
// sb.AppendLine();
// }
// return new MemoryStream(System.Text.Encoding.UTF8.GetBytes(sb.ToString()));
//}
////</only_for_test>
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.OriginalUri.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 &&
PortalContext.Current.RepositoryPath == _repositoryPath &&
(string.IsNullOrEmpty(PortalContext.Current.ActionName) || PortalContext.Current.ActionName == "Browse") &&
!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))
{
HttpContext.Current.Response.AppendHeader("Access-Control-Allow-Origin", HttpContext.Current.Request.Url.GetComponents(UriComponents.SchemeAndServer, UriFormat.SafeUnescaped));
}
}
//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);
}
void IHttpHandler.ProcessRequest(HttpContext context)
{
Stream imageStream;
BinaryData binaryData;
var propNameParam = context.Request.QueryString["NodeProperty"];
var propertyName = string.Empty;
var widthParam = context.Request.QueryString["width"];
var heightParam = context.Request.QueryString["height"];
if (!string.IsNullOrEmpty(propNameParam))
{
propertyName = propNameParam.Replace("$", "#");
binaryData = this.GetBinary(propertyName);
}
else
{
binaryData = this.Binary;
}
if (DocumentPreviewProvider.Current != null && DocumentPreviewProvider.Current.IsPreviewOrThumbnailImage(NodeHead.Get(this.Id)))
{
// get preview image with watermark or redaction if necessary
imageStream = string.IsNullOrEmpty(propertyName)
? DocumentPreviewProvider.Current.GetRestrictedImage(this)
: DocumentPreviewProvider.Current.GetRestrictedImage(this, propertyName);
}
else
{
imageStream = binaryData.GetStream();
}
//set compressed encoding if necessary
if (MimeTable.IsCompressedType(this.Extension))
{
context.Response.Headers.Add("Content-Encoding", "gzip");
}
context.Response.ContentType = binaryData.ContentType;
imageStream.Position = 0;
if (!string.IsNullOrEmpty(widthParam) && !string.IsNullOrEmpty(heightParam))
{
int width;
int height;
if (!int.TryParse(widthParam, out width))
{
width = 200;
}
if (!int.TryParse(heightParam, out height))
{
height = 200;
}
// compute a new, resized stream on-the-fly
using (var resizedStream = ImageResizer.CreateResizedImageFile(imageStream, width, height, 80, getImageFormat(binaryData.ContentType)))
{
resizedStream.CopyTo(context.Response.OutputStream);
}
}
else
{
imageStream.CopyTo(context.Response.OutputStream);
}
imageStream.Close();
}
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;
// Images need to be handled differently, because of these reasons:
// - dimensions may be changed dynamically, based on request parameters
// - preview images may be restricted (redacted) based on permissions
if (_node is Image img)
{
var parameters = HttpContext.Current?.Request.QueryString;
stream = img.GetImageStream(propertyName,
parameters?.AllKeys.ToDictionary(k => k ?? string.Empty, k => (object)parameters[k]),
out contentType,
out fileName);
}
else
{
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);
}