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);
}
}
internal void AuthorizeRequest(HttpContext context)
{
PortalContext currentPortalContext = PortalContext.Current;
if (currentPortalContext == null)
{
return;
}
var currentUser = context?.User.Identity as User;
// deny access for visitors in case of webdav or office protocol requests, if they have no See access to the content
if (currentUser != null && currentUser.Id == Identifiers.VisitorUserId && (currentPortalContext.IsOfficeProtocolRequest || currentPortalContext.IsWebdavRequest))
{
if (!currentPortalContext.IsRequestedResourceExistInRepository ||
currentPortalContext.ContextNodeHead == null ||
!SecurityHandler.HasPermission(currentPortalContext.ContextNodeHead, PermissionType.See))
{
AuthenticationHelper.ForceBasicAuthentication(HttpContext.Current);
}
}
if (context == null)
{
return;
}
if (currentPortalContext.IsRequestedResourceExistInRepository)
{
var authMode = currentPortalContext.AuthenticationMode;
if (string.IsNullOrEmpty(authMode))
{
authMode = WebApplication.DefaultAuthenticationMode;
}
bool appPerm;
if (authMode == "Forms")
{
appPerm = currentPortalContext.CurrentAction.CheckPermission();
}
else if (authMode == "Windows")
{
currentPortalContext.CurrentAction.AssertPermissions();
appPerm = true;
}
else
{
throw new NotSupportedException("None authentication is not supported");
}
var path = currentPortalContext.RepositoryPath;
var nodeHead = NodeHead.Get(path);
var permissionValue = SecurityHandler.GetPermission(nodeHead, PermissionType.Open);
if (permissionValue == PermissionValue.Allowed && DocumentPreviewProvider.Current.IsPreviewOrThumbnailImage(nodeHead))
{
// In case of preview images we need to make sure that they belong to a content version that
// is accessible by the user (e.g. must not serve images for minor versions if the user has
// access only to major versions of the content).
if (!DocumentPreviewProvider.Current.IsPreviewAccessible(nodeHead))
{
permissionValue = PermissionValue.Denied;
}
}
else if (permissionValue != PermissionValue.Allowed && appPerm && DocumentPreviewProvider.Current.HasPreviewPermission(nodeHead))
{
// In case Open permission is missing: check for Preview permissions. If the current Document
// Preview Provider allows access to a preview, we should allow the user to access the content.
permissionValue = PermissionValue.Allowed;
}
if (permissionValue != PermissionValue.Allowed)
{
if (nodeHead.Id == Identifiers.PortalRootId)
{
if (currentPortalContext.IsOdataRequest)
{
if (currentPortalContext.ODataRequest.IsMemberRequest)
{
permissionValue = PermissionValue.Allowed;
}
}
}
}
if (permissionValue != PermissionValue.Allowed || !appPerm)
{
if (currentPortalContext.IsOdataRequest)
{
AuthenticationHelper.ThrowForbidden();
}
switch (authMode)
{
case "Forms":
if (User.Current.IsAuthenticated)
{
// user is authenticated, but has no permissions: return 403
context.Response.StatusCode = 403;
context.Response.Flush();
context.Response.Close();
}
else
{
// let webdav and office protocol handle authentication - in these cases redirecting to a login page makes no sense
if (PortalContext.Current.IsWebdavRequest || PortalContext.Current.IsOfficeProtocolRequest)
{
return;
}
// user is not authenticated and visitor has no permissions: redirect to login page
// Get the login page Url (eg. http://localhost:1315/home/login)
string loginPageUrl = currentPortalContext.GetLoginPageUrl();
// Append trailing slash
if (loginPageUrl != null && !loginPageUrl.EndsWith("/"))
{
loginPageUrl = loginPageUrl + "/";
}
// Cut down the querystring (eg. drop ?Param1=value1@Param2=value2)
string currentRequestUrlWithoutQueryString = currentPortalContext.RequestedUri.GetComponents(UriComponents.Scheme | UriComponents.Host | UriComponents.Port | UriComponents.Path, UriFormat.Unescaped);
// Append trailing slash
if (!currentRequestUrlWithoutQueryString.EndsWith("/"))
{
currentRequestUrlWithoutQueryString = currentRequestUrlWithoutQueryString + "/";
}
// Redirect to the login page, if neccessary.
if (currentRequestUrlWithoutQueryString != loginPageUrl)
{
context.Response.Redirect(loginPageUrl + "?OriginalUrl=" + System.Web.HttpUtility.UrlEncode(currentPortalContext.RequestedUri.ToString()), true);
}
}
break;
default:
AuthenticationHelper.DenyAccess(context);
break;
}
}
}
}
private void OnEnter(object sender, EventArgs e)
{
HttpContext httpContext = (sender as HttpApplication).Context;
var request = httpContext.Request;
SnTrace.Web.Write("PCM.OnEnter {0} {1}", request.RequestType, request.Url);
// check if messages to process from msmq exceeds configured limit: delay current thread until it goes back to normal levels
DelayCurrentRequestIfNecessary();
var initInfo = PortalContext.CreateInitInfo(httpContext);
// Check for forbidden paths (custom request filtering), mainly for phisycal folders in the web folder.
// The built-in Request filtering module is not capable of filtering folders only in the root, but let
// us have folders with the same name somewhere else in the Content Repository.
if (IsForbiddenFolder(initInfo))
{
AuthenticationHelper.ThrowNotFound();
}
// check if request came to a restricted site via another site
if (Configuration.WebApplication.DenyCrossSiteAccessEnabled)
{
if (initInfo.RequestedNodeSite != null && initInfo.RequestedSite != null)
{
if (initInfo.RequestedNodeSite.DenyCrossSiteAccess && initInfo.RequestedSite.Id != initInfo.RequestedNodeSite.Id)
{
HttpContext.Current.Response.StatusCode = 404;
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
return;
}
}
}
// add cache-control headers and handle ismodifiedsince requests
HandleResponseForClientCache(initInfo);
PortalContext portalContext = PortalContext.Create(httpContext, initInfo);
// Cross-Origin Resource Sharing (CORS)
if (!HttpHeaderTools.TrySetAllowedOriginHeader())
{
AuthenticationHelper.ThrowForbidden("token auth");
}
if (!portalContext.IsWebdavRequest && !portalContext.IsOfficeProtocolRequest && request.HttpMethod == "OPTIONS")
{
// set allowed methods and headers
HttpHeaderTools.SetPreflightResponse();
(sender as HttpApplication)?.CompleteRequest();
return;
}
var action = HttpActionManager.CreateAction(portalContext);
SnTrace.Web.Write("HTTP Action." + GetLoggedProperties(portalContext));
action.Execute();
}
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);
}
public void OnAuthenticateRequest(object sender, EventArgs e)
{
var application = sender as HttpApplication;
var context = GetContext(sender); //HttpContext.Current;
var request = GetRequest(sender);
bool anonymAuthenticated;
var basicAuthenticated = DispatchBasicAuthentication(context, out anonymAuthenticated);
if (IsTokenAuthenticationRequested(request))
{
// Cross-Origin Resource Sharing (CORS)
if (!HttpHeaderTools.IsOriginHeaderAllowed())
{
AuthenticationHelper.ThrowForbidden("token auth");
}
if (request?.HttpMethod == "OPTIONS")
{
// set allowed methods and headers
HttpHeaderTools.SetPreflightResponse();
application?.CompleteRequest();
}
if (basicAuthenticated && anonymAuthenticated)
{
SnLog.WriteException(new UnauthorizedAccessException("Invalid user."));
context.Response.StatusCode = HttpResponseStatusCode.Unauthorized;
context.Response.Flush();
if (application?.Context != null)
{
application.CompleteRequest();
}
}
else
{
TokenAuthenticate(basicAuthenticated, context, application);
}
return;
}
// if it is a simple basic authentication case
if (basicAuthenticated)
{
return;
}
string authenticationType = null;
string repositoryPath = string.Empty;
// Get the current PortalContext
var currentPortalContext = PortalContext.Current;
if (currentPortalContext != null)
{
authenticationType = currentPortalContext.AuthenticationMode;
}
// default authentication mode
if (string.IsNullOrEmpty(authenticationType))
{
authenticationType = WebApplication.DefaultAuthenticationMode;
}
// if no site auth mode, no web.config default, then exception...
if (string.IsNullOrEmpty(authenticationType))
{
throw new ApplicationException(
"The engine could not determine the authentication mode for this request. This request does not belong to a site, and there was no default authentication mode set in the web.config.");
}
switch (authenticationType)
{
case "Windows":
EmulateWindowsAuthentication(application);
SetApplicationUser(application, authenticationType);
break;
case "Forms":
application.Context.User = null;
CallInternalOnEnter(sender, e);
SetApplicationUser(application, authenticationType);
break;
case "None":
// "None" authentication: set the Visitor Identity
application.Context.User = new PortalPrincipal(User.Visitor);
break;
default:
Site site = null;
var problemNode = Node.LoadNode(repositoryPath);
if (problemNode != null)
{
site = Site.GetSiteByNode(problemNode);
if (site != null)
{
authenticationType = site.GetAuthenticationType(application.Context.Request.Url);
}
}
var message = site == null
? string.Format(
HttpContext.GetGlobalResourceObject("Portal", "DefaultAuthenticationNotSupported") as string,
authenticationType)
: string.Format(
HttpContext.GetGlobalResourceObject("Portal", "AuthenticationNotSupportedOnSite") as string,
site.Name, authenticationType);
throw new NotSupportedException(message);
}
}
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);
}
